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-rw-r--r--drivers/platform/Kconfig11
-rw-r--r--drivers/platform/Makefile9
-rw-r--r--drivers/platform/chrome/Kconfig62
-rw-r--r--drivers/platform/chrome/Makefile6
-rw-r--r--drivers/platform/chrome/chromeos_laptop.c645
-rw-r--r--drivers/platform/chrome/chromeos_pstore.c91
-rw-r--r--drivers/platform/chrome/cros_ec_dev.c274
-rw-r--r--drivers/platform/chrome/cros_ec_dev.h53
-rw-r--r--drivers/platform/chrome/cros_ec_lightbar.c367
-rw-r--r--drivers/platform/chrome/cros_ec_lpc.c319
-rw-r--r--drivers/platform/chrome/cros_ec_sysfs.c271
-rw-r--r--drivers/platform/goldfish/Kconfig5
-rw-r--r--drivers/platform/goldfish/Makefile5
-rw-r--r--drivers/platform/goldfish/goldfish_pipe.c628
-rw-r--r--drivers/platform/goldfish/pdev_bus.c239
-rw-r--r--drivers/platform/mips/Kconfig30
-rw-r--r--drivers/platform/mips/Makefile2
-rw-r--r--drivers/platform/mips/acpi_init.c150
-rw-r--r--drivers/platform/mips/cpu_hwmon.c207
-rw-r--r--drivers/platform/olpc/Makefile4
-rw-r--r--drivers/platform/olpc/olpc-ec.c336
-rw-r--r--drivers/platform/x86/Kconfig909
-rw-r--r--drivers/platform/x86/Makefile62
-rw-r--r--drivers/platform/x86/acer-wmi.c2347
-rw-r--r--drivers/platform/x86/acerhdf.c813
-rw-r--r--drivers/platform/x86/alienware-wmi.c639
-rw-r--r--drivers/platform/x86/amilo-rfkill.c182
-rw-r--r--drivers/platform/x86/apple-gmux.c677
-rw-r--r--drivers/platform/x86/asus-laptop.c2002
-rw-r--r--drivers/platform/x86/asus-nb-wmi.c384
-rw-r--r--drivers/platform/x86/asus-wmi.c1978
-rw-r--r--drivers/platform/x86/asus-wmi.h84
-rw-r--r--drivers/platform/x86/classmate-laptop.c1171
-rw-r--r--drivers/platform/x86/compal-laptop.c1098
-rw-r--r--drivers/platform/x86/dell-laptop.c2003
-rw-r--r--drivers/platform/x86/dell-smo8800.c239
-rw-r--r--drivers/platform/x86/dell-wmi-aio.c214
-rw-r--r--drivers/platform/x86/dell-wmi.c423
-rw-r--r--drivers/platform/x86/eeepc-laptop.c1546
-rw-r--r--drivers/platform/x86/eeepc-wmi.c278
-rw-r--r--drivers/platform/x86/fujitsu-laptop.c1215
-rw-r--r--drivers/platform/x86/fujitsu-tablet.c554
-rw-r--r--drivers/platform/x86/hdaps.c893
-rw-r--r--drivers/platform/x86/hp-wireless.c135
-rw-r--r--drivers/platform/x86/hp-wmi.c1064
-rw-r--r--drivers/platform/x86/hp_accel.c436
-rw-r--r--drivers/platform/x86/ibm_rtl.c328
-rw-r--r--drivers/platform/x86/ideapad-laptop.c992
-rw-r--r--drivers/platform/x86/intel-rst.c161
-rw-r--r--drivers/platform/x86/intel-smartconnect.c60
-rw-r--r--drivers/platform/x86/intel_ips.c1738
-rw-r--r--drivers/platform/x86/intel_ips.h21
-rw-r--r--drivers/platform/x86/intel_menlow.c537
-rw-r--r--drivers/platform/x86/intel_mid_powerbtn.c146
-rw-r--r--drivers/platform/x86/intel_mid_thermal.c569
-rw-r--r--drivers/platform/x86/intel_oaktrail.c392
-rw-r--r--drivers/platform/x86/intel_pmic_gpio.c330
-rw-r--r--drivers/platform/x86/intel_scu_ipc.c675
-rw-r--r--drivers/platform/x86/intel_scu_ipcutil.c121
-rw-r--r--drivers/platform/x86/msi-laptop.c1200
-rw-r--r--drivers/platform/x86/msi-wmi.c361
-rw-r--r--drivers/platform/x86/mxm-wmi.c111
-rw-r--r--drivers/platform/x86/panasonic-laptop.c671
-rw-r--r--drivers/platform/x86/pvpanic.c124
-rw-r--r--drivers/platform/x86/samsung-laptop.c1834
-rw-r--r--drivers/platform/x86/samsung-q10.c163
-rw-r--r--drivers/platform/x86/sony-laptop.c4911
-rw-r--r--drivers/platform/x86/tc1100-wmi.c280
-rw-r--r--drivers/platform/x86/thinkpad_acpi.c9611
-rw-r--r--drivers/platform/x86/thinkpad_ec.c513
-rw-r--r--drivers/platform/x86/topstar-laptop.c187
-rw-r--r--drivers/platform/x86/toshiba_acpi.c3007
-rw-r--r--drivers/platform/x86/toshiba_bluetooth.c204
-rw-r--r--drivers/platform/x86/toshiba_haps.c265
-rw-r--r--drivers/platform/x86/tp_smapi.c1493
-rw-r--r--drivers/platform/x86/wmi.c969
-rw-r--r--drivers/platform/x86/xo1-rfkill.c83
-rw-r--r--drivers/platform/x86/xo15-ebook.c172
78 files changed, 57289 insertions, 0 deletions
diff --git a/drivers/platform/Kconfig b/drivers/platform/Kconfig
new file mode 100644
index 000000000..0adccbf5c
--- /dev/null
+++ b/drivers/platform/Kconfig
@@ -0,0 +1,11 @@
+if X86
+source "drivers/platform/x86/Kconfig"
+endif
+if MIPS
+source "drivers/platform/mips/Kconfig"
+endif
+if GOLDFISH
+source "drivers/platform/goldfish/Kconfig"
+endif
+
+source "drivers/platform/chrome/Kconfig"
diff --git a/drivers/platform/Makefile b/drivers/platform/Makefile
new file mode 100644
index 000000000..ca2692510
--- /dev/null
+++ b/drivers/platform/Makefile
@@ -0,0 +1,9 @@
+#
+# Makefile for linux/drivers/platform
+#
+
+obj-$(CONFIG_X86) += x86/
+obj-$(CONFIG_MIPS) += mips/
+obj-$(CONFIG_OLPC) += olpc/
+obj-$(CONFIG_GOLDFISH) += goldfish/
+obj-$(CONFIG_CHROME_PLATFORMS) += chrome/
diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig
new file mode 100644
index 000000000..2a6531a5f
--- /dev/null
+++ b/drivers/platform/chrome/Kconfig
@@ -0,0 +1,62 @@
+#
+# Platform support for Chrome OS hardware (Chromebooks and Chromeboxes)
+#
+
+menuconfig CHROME_PLATFORMS
+ bool "Platform support for Chrome hardware"
+ depends on X86 || ARM
+ ---help---
+ Say Y here to get to see options for platform support for
+ various Chromebooks and Chromeboxes. This option alone does
+ not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and disabled.
+
+if CHROME_PLATFORMS
+
+config CHROMEOS_LAPTOP
+ tristate "Chrome OS Laptop"
+ depends on I2C && DMI && X86
+ ---help---
+ This driver instantiates i2c and smbus devices such as
+ light sensors and touchpads.
+
+ If you have a supported Chromebook, choose Y or M here.
+ The module will be called chromeos_laptop.
+
+config CHROMEOS_PSTORE
+ tristate "Chrome OS pstore support"
+ depends on X86
+ ---help---
+ This module instantiates the persistent storage on x86 ChromeOS
+ devices. It can be used to store away console logs and crash
+ information across reboots.
+
+ The range of memory used is 0xf00000-0x1000000, traditionally
+ the memory used to back VGA controller memory.
+
+ If you have a supported Chromebook, choose Y or M here.
+ The module will be called chromeos_pstore.
+
+config CROS_EC_CHARDEV
+ tristate "Chrome OS Embedded Controller userspace device interface"
+ depends on MFD_CROS_EC
+ ---help---
+ This driver adds support to talk with the ChromeOS EC from userspace.
+
+ If you have a supported Chromebook, choose Y or M here.
+ The module will be called cros_ec_dev.
+
+config CROS_EC_LPC
+ tristate "ChromeOS Embedded Controller (LPC)"
+ depends on MFD_CROS_EC && (X86 || COMPILE_TEST)
+ help
+ If you say Y here, you get support for talking to the ChromeOS EC
+ over an LPC bus. This uses a simple byte-level protocol with a
+ checksum. This is used for userspace access only. The kernel
+ typically has its own communication methods.
+
+ To compile this driver as a module, choose M here: the
+ module will be called cros_ec_lpc.
+
+endif # CHROMEOS_PLATFORMS
diff --git a/drivers/platform/chrome/Makefile b/drivers/platform/chrome/Makefile
new file mode 100644
index 000000000..bd8d8601e
--- /dev/null
+++ b/drivers/platform/chrome/Makefile
@@ -0,0 +1,6 @@
+
+obj-$(CONFIG_CHROMEOS_LAPTOP) += chromeos_laptop.o
+obj-$(CONFIG_CHROMEOS_PSTORE) += chromeos_pstore.o
+cros_ec_devs-objs := cros_ec_dev.o cros_ec_sysfs.o cros_ec_lightbar.o
+obj-$(CONFIG_CROS_EC_CHARDEV) += cros_ec_devs.o
+obj-$(CONFIG_CROS_EC_LPC) += cros_ec_lpc.o
diff --git a/drivers/platform/chrome/chromeos_laptop.c b/drivers/platform/chrome/chromeos_laptop.c
new file mode 100644
index 000000000..a04019ab9
--- /dev/null
+++ b/drivers/platform/chrome/chromeos_laptop.c
@@ -0,0 +1,645 @@
+/*
+ * chromeos_laptop.c - Driver to instantiate Chromebook i2c/smbus devices.
+ *
+ * Author : Benson Leung <bleung@chromium.org>
+ *
+ * Copyright (C) 2012 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/dmi.h>
+#include <linux/i2c.h>
+#include <linux/i2c/atmel_mxt_ts.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#define ATMEL_TP_I2C_ADDR 0x4b
+#define ATMEL_TP_I2C_BL_ADDR 0x25
+#define ATMEL_TS_I2C_ADDR 0x4a
+#define ATMEL_TS_I2C_BL_ADDR 0x26
+#define CYAPA_TP_I2C_ADDR 0x67
+#define ISL_ALS_I2C_ADDR 0x44
+#define TAOS_ALS_I2C_ADDR 0x29
+
+#define MAX_I2C_DEVICE_DEFERRALS 5
+
+static struct i2c_client *als;
+static struct i2c_client *tp;
+static struct i2c_client *ts;
+
+static const char *i2c_adapter_names[] = {
+ "SMBus I801 adapter",
+ "i915 gmbus vga",
+ "i915 gmbus panel",
+ "i2c-designware-pci",
+ "i2c-designware-pci",
+};
+
+/* Keep this enum consistent with i2c_adapter_names */
+enum i2c_adapter_type {
+ I2C_ADAPTER_SMBUS = 0,
+ I2C_ADAPTER_VGADDC,
+ I2C_ADAPTER_PANEL,
+ I2C_ADAPTER_DESIGNWARE_0,
+ I2C_ADAPTER_DESIGNWARE_1,
+};
+
+enum i2c_peripheral_state {
+ UNPROBED = 0,
+ PROBED,
+ TIMEDOUT,
+};
+
+struct i2c_peripheral {
+ int (*add)(enum i2c_adapter_type type);
+ enum i2c_adapter_type type;
+ enum i2c_peripheral_state state;
+ int tries;
+};
+
+#define MAX_I2C_PERIPHERALS 3
+
+struct chromeos_laptop {
+ struct i2c_peripheral i2c_peripherals[MAX_I2C_PERIPHERALS];
+};
+
+static struct chromeos_laptop *cros_laptop;
+
+static struct i2c_board_info cyapa_device = {
+ I2C_BOARD_INFO("cyapa", CYAPA_TP_I2C_ADDR),
+ .flags = I2C_CLIENT_WAKE,
+};
+
+static struct i2c_board_info isl_als_device = {
+ I2C_BOARD_INFO("isl29018", ISL_ALS_I2C_ADDR),
+};
+
+static struct i2c_board_info tsl2583_als_device = {
+ I2C_BOARD_INFO("tsl2583", TAOS_ALS_I2C_ADDR),
+};
+
+static struct i2c_board_info tsl2563_als_device = {
+ I2C_BOARD_INFO("tsl2563", TAOS_ALS_I2C_ADDR),
+};
+
+static int mxt_t19_keys[] = {
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ BTN_LEFT
+};
+
+static struct mxt_platform_data atmel_224s_tp_platform_data = {
+ .irqflags = IRQF_TRIGGER_FALLING,
+ .t19_num_keys = ARRAY_SIZE(mxt_t19_keys),
+ .t19_keymap = mxt_t19_keys,
+};
+
+static struct i2c_board_info atmel_224s_tp_device = {
+ I2C_BOARD_INFO("atmel_mxt_tp", ATMEL_TP_I2C_ADDR),
+ .platform_data = &atmel_224s_tp_platform_data,
+ .flags = I2C_CLIENT_WAKE,
+};
+
+static struct mxt_platform_data atmel_1664s_platform_data = {
+ .irqflags = IRQF_TRIGGER_FALLING,
+};
+
+static struct i2c_board_info atmel_1664s_device = {
+ I2C_BOARD_INFO("atmel_mxt_ts", ATMEL_TS_I2C_ADDR),
+ .platform_data = &atmel_1664s_platform_data,
+ .flags = I2C_CLIENT_WAKE,
+};
+
+static struct i2c_client *__add_probed_i2c_device(
+ const char *name,
+ int bus,
+ struct i2c_board_info *info,
+ const unsigned short *alt_addr_list)
+{
+ const struct dmi_device *dmi_dev;
+ const struct dmi_dev_onboard *dev_data;
+ struct i2c_adapter *adapter;
+ struct i2c_client *client = NULL;
+ const unsigned short addr_list[] = { info->addr, I2C_CLIENT_END };
+
+ if (bus < 0)
+ return NULL;
+ /*
+ * If a name is specified, look for irq platform information stashed
+ * in DMI_DEV_TYPE_DEV_ONBOARD by the Chrome OS custom system firmware.
+ */
+ if (name) {
+ dmi_dev = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD, name, NULL);
+ if (!dmi_dev) {
+ pr_err("%s failed to dmi find device %s.\n",
+ __func__,
+ name);
+ return NULL;
+ }
+ dev_data = (struct dmi_dev_onboard *)dmi_dev->device_data;
+ if (!dev_data) {
+ pr_err("%s failed to get data from dmi for %s.\n",
+ __func__, name);
+ return NULL;
+ }
+ info->irq = dev_data->instance;
+ }
+
+ adapter = i2c_get_adapter(bus);
+ if (!adapter) {
+ pr_err("%s failed to get i2c adapter %d.\n", __func__, bus);
+ return NULL;
+ }
+
+ /*
+ * Add the i2c device. If we can't detect it at the primary
+ * address we scan secondary addresses. In any case the client
+ * structure gets assigned primary address.
+ */
+ client = i2c_new_probed_device(adapter, info, addr_list, NULL);
+ if (!client && alt_addr_list) {
+ struct i2c_board_info dummy_info = {
+ I2C_BOARD_INFO("dummy", info->addr),
+ };
+ struct i2c_client *dummy;
+
+ dummy = i2c_new_probed_device(adapter, &dummy_info,
+ alt_addr_list, NULL);
+ if (dummy) {
+ pr_debug("%s %d-%02x is probed at %02x\n",
+ __func__, bus, info->addr, dummy->addr);
+ i2c_unregister_device(dummy);
+ client = i2c_new_device(adapter, info);
+ }
+ }
+
+ if (!client)
+ pr_notice("%s failed to register device %d-%02x\n",
+ __func__, bus, info->addr);
+ else
+ pr_debug("%s added i2c device %d-%02x\n",
+ __func__, bus, info->addr);
+
+ i2c_put_adapter(adapter);
+ return client;
+}
+
+struct i2c_lookup {
+ const char *name;
+ int instance;
+ int n;
+};
+
+static int __find_i2c_adap(struct device *dev, void *data)
+{
+ struct i2c_lookup *lookup = data;
+ static const char *prefix = "i2c-";
+ struct i2c_adapter *adapter;
+
+ if (strncmp(dev_name(dev), prefix, strlen(prefix)) != 0)
+ return 0;
+ adapter = to_i2c_adapter(dev);
+ if (strncmp(adapter->name, lookup->name, strlen(lookup->name)) == 0 &&
+ lookup->n++ == lookup->instance)
+ return 1;
+ return 0;
+}
+
+static int find_i2c_adapter_num(enum i2c_adapter_type type)
+{
+ struct device *dev = NULL;
+ struct i2c_adapter *adapter;
+ struct i2c_lookup lookup;
+
+ memset(&lookup, 0, sizeof(lookup));
+ lookup.name = i2c_adapter_names[type];
+ lookup.instance = (type == I2C_ADAPTER_DESIGNWARE_1) ? 1 : 0;
+
+ /* find the adapter by name */
+ dev = bus_find_device(&i2c_bus_type, NULL, &lookup, __find_i2c_adap);
+ if (!dev) {
+ /* Adapters may appear later. Deferred probing will retry */
+ pr_notice("%s: i2c adapter %s not found on system.\n", __func__,
+ lookup.name);
+ return -ENODEV;
+ }
+ adapter = to_i2c_adapter(dev);
+ return adapter->nr;
+}
+
+/*
+ * Takes a list of addresses in addrs as such :
+ * { addr1, ... , addrn, I2C_CLIENT_END };
+ * add_probed_i2c_device will use i2c_new_probed_device
+ * and probe for devices at all of the addresses listed.
+ * Returns NULL if no devices found.
+ * See Documentation/i2c/instantiating-devices for more information.
+ */
+static struct i2c_client *add_probed_i2c_device(
+ const char *name,
+ enum i2c_adapter_type type,
+ struct i2c_board_info *info,
+ const unsigned short *addrs)
+{
+ return __add_probed_i2c_device(name,
+ find_i2c_adapter_num(type),
+ info,
+ addrs);
+}
+
+/*
+ * Probes for a device at a single address, the one provided by
+ * info->addr.
+ * Returns NULL if no device found.
+ */
+static struct i2c_client *add_i2c_device(const char *name,
+ enum i2c_adapter_type type,
+ struct i2c_board_info *info)
+{
+ return __add_probed_i2c_device(name,
+ find_i2c_adapter_num(type),
+ info,
+ NULL);
+}
+
+static int setup_cyapa_tp(enum i2c_adapter_type type)
+{
+ if (tp)
+ return 0;
+
+ /* add cyapa touchpad */
+ tp = add_i2c_device("trackpad", type, &cyapa_device);
+ return (!tp) ? -EAGAIN : 0;
+}
+
+static int setup_atmel_224s_tp(enum i2c_adapter_type type)
+{
+ const unsigned short addr_list[] = { ATMEL_TP_I2C_BL_ADDR,
+ I2C_CLIENT_END };
+ if (tp)
+ return 0;
+
+ /* add atmel mxt touchpad */
+ tp = add_probed_i2c_device("trackpad", type,
+ &atmel_224s_tp_device, addr_list);
+ return (!tp) ? -EAGAIN : 0;
+}
+
+static int setup_atmel_1664s_ts(enum i2c_adapter_type type)
+{
+ const unsigned short addr_list[] = { ATMEL_TS_I2C_BL_ADDR,
+ I2C_CLIENT_END };
+ if (ts)
+ return 0;
+
+ /* add atmel mxt touch device */
+ ts = add_probed_i2c_device("touchscreen", type,
+ &atmel_1664s_device, addr_list);
+ return (!ts) ? -EAGAIN : 0;
+}
+
+static int setup_isl29018_als(enum i2c_adapter_type type)
+{
+ if (als)
+ return 0;
+
+ /* add isl29018 light sensor */
+ als = add_i2c_device("lightsensor", type, &isl_als_device);
+ return (!als) ? -EAGAIN : 0;
+}
+
+static int setup_tsl2583_als(enum i2c_adapter_type type)
+{
+ if (als)
+ return 0;
+
+ /* add tsl2583 light sensor */
+ als = add_i2c_device(NULL, type, &tsl2583_als_device);
+ return (!als) ? -EAGAIN : 0;
+}
+
+static int setup_tsl2563_als(enum i2c_adapter_type type)
+{
+ if (als)
+ return 0;
+
+ /* add tsl2563 light sensor */
+ als = add_i2c_device(NULL, type, &tsl2563_als_device);
+ return (!als) ? -EAGAIN : 0;
+}
+
+static int __init chromeos_laptop_dmi_matched(const struct dmi_system_id *id)
+{
+ cros_laptop = (void *)id->driver_data;
+ pr_debug("DMI Matched %s.\n", id->ident);
+
+ /* Indicate to dmi_scan that processing is done. */
+ return 1;
+}
+
+static int chromeos_laptop_probe(struct platform_device *pdev)
+{
+ int i;
+ int ret = 0;
+
+ for (i = 0; i < MAX_I2C_PERIPHERALS; i++) {
+ struct i2c_peripheral *i2c_dev;
+
+ i2c_dev = &cros_laptop->i2c_peripherals[i];
+
+ /* No more peripherals. */
+ if (i2c_dev->add == NULL)
+ break;
+
+ if (i2c_dev->state == TIMEDOUT || i2c_dev->state == PROBED)
+ continue;
+
+ /*
+ * Check that the i2c adapter is present.
+ * -EPROBE_DEFER if missing as the adapter may appear much
+ * later.
+ */
+ if (find_i2c_adapter_num(i2c_dev->type) == -ENODEV) {
+ ret = -EPROBE_DEFER;
+ continue;
+ }
+
+ /* Add the device. */
+ if (i2c_dev->add(i2c_dev->type) == -EAGAIN) {
+ /*
+ * Set -EPROBE_DEFER a limited num of times
+ * if device is not successfully added.
+ */
+ if (++i2c_dev->tries < MAX_I2C_DEVICE_DEFERRALS) {
+ ret = -EPROBE_DEFER;
+ } else {
+ /* Ran out of tries. */
+ pr_notice("%s: Ran out of tries for device.\n",
+ __func__);
+ i2c_dev->state = TIMEDOUT;
+ }
+ } else {
+ i2c_dev->state = PROBED;
+ }
+ }
+
+ return ret;
+}
+
+static struct chromeos_laptop samsung_series_5_550 = {
+ .i2c_peripherals = {
+ /* Touchpad. */
+ { .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS },
+ /* Light Sensor. */
+ { .add = setup_isl29018_als, I2C_ADAPTER_SMBUS },
+ },
+};
+
+static struct chromeos_laptop samsung_series_5 = {
+ .i2c_peripherals = {
+ /* Light Sensor. */
+ { .add = setup_tsl2583_als, I2C_ADAPTER_SMBUS },
+ },
+};
+
+static struct chromeos_laptop chromebook_pixel = {
+ .i2c_peripherals = {
+ /* Touch Screen. */
+ { .add = setup_atmel_1664s_ts, I2C_ADAPTER_PANEL },
+ /* Touchpad. */
+ { .add = setup_atmel_224s_tp, I2C_ADAPTER_VGADDC },
+ /* Light Sensor. */
+ { .add = setup_isl29018_als, I2C_ADAPTER_PANEL },
+ },
+};
+
+static struct chromeos_laptop hp_chromebook_14 = {
+ .i2c_peripherals = {
+ /* Touchpad. */
+ { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 },
+ },
+};
+
+static struct chromeos_laptop dell_chromebook_11 = {
+ .i2c_peripherals = {
+ /* Touchpad. */
+ { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 },
+ },
+};
+
+static struct chromeos_laptop toshiba_cb35 = {
+ .i2c_peripherals = {
+ /* Touchpad. */
+ { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 },
+ },
+};
+
+static struct chromeos_laptop acer_c7_chromebook = {
+ .i2c_peripherals = {
+ /* Touchpad. */
+ { .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS },
+ },
+};
+
+static struct chromeos_laptop acer_ac700 = {
+ .i2c_peripherals = {
+ /* Light Sensor. */
+ { .add = setup_tsl2563_als, I2C_ADAPTER_SMBUS },
+ },
+};
+
+static struct chromeos_laptop acer_c720 = {
+ .i2c_peripherals = {
+ /* Touchscreen. */
+ { .add = setup_atmel_1664s_ts, I2C_ADAPTER_DESIGNWARE_1 },
+ /* Touchpad. */
+ { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 },
+ /* Light Sensor. */
+ { .add = setup_isl29018_als, I2C_ADAPTER_DESIGNWARE_1 },
+ },
+};
+
+static struct chromeos_laptop hp_pavilion_14_chromebook = {
+ .i2c_peripherals = {
+ /* Touchpad. */
+ { .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS },
+ },
+};
+
+static struct chromeos_laptop cr48 = {
+ .i2c_peripherals = {
+ /* Light Sensor. */
+ { .add = setup_tsl2563_als, I2C_ADAPTER_SMBUS },
+ },
+};
+
+#define _CBDD(board_) \
+ .callback = chromeos_laptop_dmi_matched, \
+ .driver_data = (void *)&board_
+
+static struct dmi_system_id chromeos_laptop_dmi_table[] __initdata = {
+ {
+ .ident = "Samsung Series 5 550",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Lumpy"),
+ },
+ _CBDD(samsung_series_5_550),
+ },
+ {
+ .ident = "Samsung Series 5",
+ .matches = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "Alex"),
+ },
+ _CBDD(samsung_series_5),
+ },
+ {
+ .ident = "Chromebook Pixel",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
+ },
+ _CBDD(chromebook_pixel),
+ },
+ {
+ .ident = "Wolf",
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Wolf"),
+ },
+ _CBDD(dell_chromebook_11),
+ },
+ {
+ .ident = "HP Chromebook 14",
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Falco"),
+ },
+ _CBDD(hp_chromebook_14),
+ },
+ {
+ .ident = "Toshiba CB35",
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Leon"),
+ },
+ _CBDD(toshiba_cb35),
+ },
+ {
+ .ident = "Acer C7 Chromebook",
+ .matches = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "Parrot"),
+ },
+ _CBDD(acer_c7_chromebook),
+ },
+ {
+ .ident = "Acer AC700",
+ .matches = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
+ },
+ _CBDD(acer_ac700),
+ },
+ {
+ .ident = "Acer C720",
+ .matches = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "Peppy"),
+ },
+ _CBDD(acer_c720),
+ },
+ {
+ .ident = "HP Pavilion 14 Chromebook",
+ .matches = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "Butterfly"),
+ },
+ _CBDD(hp_pavilion_14_chromebook),
+ },
+ {
+ .ident = "Cr-48",
+ .matches = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
+ },
+ _CBDD(cr48),
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(dmi, chromeos_laptop_dmi_table);
+
+static struct platform_device *cros_platform_device;
+
+static struct platform_driver cros_platform_driver = {
+ .driver = {
+ .name = "chromeos_laptop",
+ },
+ .probe = chromeos_laptop_probe,
+};
+
+static int __init chromeos_laptop_init(void)
+{
+ int ret;
+
+ if (!dmi_check_system(chromeos_laptop_dmi_table)) {
+ pr_debug("%s unsupported system.\n", __func__);
+ return -ENODEV;
+ }
+
+ ret = platform_driver_register(&cros_platform_driver);
+ if (ret)
+ return ret;
+
+ cros_platform_device = platform_device_alloc("chromeos_laptop", -1);
+ if (!cros_platform_device) {
+ ret = -ENOMEM;
+ goto fail_platform_device1;
+ }
+
+ ret = platform_device_add(cros_platform_device);
+ if (ret)
+ goto fail_platform_device2;
+
+ return 0;
+
+fail_platform_device2:
+ platform_device_put(cros_platform_device);
+fail_platform_device1:
+ platform_driver_unregister(&cros_platform_driver);
+ return ret;
+}
+
+static void __exit chromeos_laptop_exit(void)
+{
+ if (als)
+ i2c_unregister_device(als);
+ if (tp)
+ i2c_unregister_device(tp);
+ if (ts)
+ i2c_unregister_device(ts);
+
+ platform_device_unregister(cros_platform_device);
+ platform_driver_unregister(&cros_platform_driver);
+}
+
+module_init(chromeos_laptop_init);
+module_exit(chromeos_laptop_exit);
+
+MODULE_DESCRIPTION("Chrome OS Laptop driver");
+MODULE_AUTHOR("Benson Leung <bleung@chromium.org>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/chrome/chromeos_pstore.c b/drivers/platform/chrome/chromeos_pstore.c
new file mode 100644
index 000000000..34749200e
--- /dev/null
+++ b/drivers/platform/chrome/chromeos_pstore.c
@@ -0,0 +1,91 @@
+/*
+ * chromeos_pstore.c - Driver to instantiate Chromebook ramoops device
+ *
+ * Copyright (C) 2013 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ */
+
+#include <linux/dmi.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pstore_ram.h>
+
+static struct dmi_system_id chromeos_pstore_dmi_table[] __initdata = {
+ {
+ /*
+ * Today all Chromebooks/boxes ship with Google_* as version and
+ * coreboot as bios vendor. No other systems with this
+ * combination are known to date.
+ */
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"),
+ DMI_MATCH(DMI_BIOS_VERSION, "Google_"),
+ },
+ },
+ {
+ /* x86-alex, the first Samsung Chromebook. */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Alex"),
+ },
+ },
+ {
+ /* x86-mario, the Cr-48 pilot device from Google. */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
+ },
+ },
+ {
+ /* x86-zgb, the first Acer Chromebook. */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
+ },
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(dmi, chromeos_pstore_dmi_table);
+
+/*
+ * On x86 chromebooks/boxes, the firmware will keep the legacy VGA memory
+ * range untouched across reboots, so we use that to store our pstore
+ * contents for panic logs, etc.
+ */
+static struct ramoops_platform_data chromeos_ramoops_data = {
+ .mem_size = 0x100000,
+ .mem_address = 0xf00000,
+ .record_size = 0x20000,
+ .console_size = 0x20000,
+ .ftrace_size = 0x20000,
+ .dump_oops = 1,
+};
+
+static struct platform_device chromeos_ramoops = {
+ .name = "ramoops",
+ .dev = {
+ .platform_data = &chromeos_ramoops_data,
+ },
+};
+
+static int __init chromeos_pstore_init(void)
+{
+ if (dmi_check_system(chromeos_pstore_dmi_table))
+ return platform_device_register(&chromeos_ramoops);
+
+ return -ENODEV;
+}
+
+static void __exit chromeos_pstore_exit(void)
+{
+ platform_device_unregister(&chromeos_ramoops);
+}
+
+module_init(chromeos_pstore_init);
+module_exit(chromeos_pstore_exit);
+
+MODULE_DESCRIPTION("Chrome OS pstore module");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/chrome/cros_ec_dev.c b/drivers/platform/chrome/cros_ec_dev.c
new file mode 100644
index 000000000..6090d0b28
--- /dev/null
+++ b/drivers/platform/chrome/cros_ec_dev.c
@@ -0,0 +1,274 @@
+/*
+ * cros_ec_dev - expose the Chrome OS Embedded Controller to user-space
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/fs.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/uaccess.h>
+
+#include "cros_ec_dev.h"
+
+/* Device variables */
+#define CROS_MAX_DEV 128
+static struct class *cros_class;
+static int ec_major;
+
+/* Basic communication */
+static int ec_get_version(struct cros_ec_device *ec, char *str, int maxlen)
+{
+ struct ec_response_get_version *resp;
+ static const char * const current_image_name[] = {
+ "unknown", "read-only", "read-write", "invalid",
+ };
+ struct cros_ec_command msg = {
+ .version = 0,
+ .command = EC_CMD_GET_VERSION,
+ .outdata = { 0 },
+ .outsize = 0,
+ .indata = { 0 },
+ .insize = sizeof(*resp),
+ };
+ int ret;
+
+ ret = cros_ec_cmd_xfer(ec, &msg);
+ if (ret < 0)
+ return ret;
+
+ if (msg.result != EC_RES_SUCCESS) {
+ snprintf(str, maxlen,
+ "%s\nUnknown EC version: EC returned %d\n",
+ CROS_EC_DEV_VERSION, msg.result);
+ return 0;
+ }
+
+ resp = (struct ec_response_get_version *)msg.indata;
+ if (resp->current_image >= ARRAY_SIZE(current_image_name))
+ resp->current_image = 3; /* invalid */
+
+ snprintf(str, maxlen, "%s\n%s\n%s\n%s\n", CROS_EC_DEV_VERSION,
+ resp->version_string_ro, resp->version_string_rw,
+ current_image_name[resp->current_image]);
+
+ return 0;
+}
+
+/* Device file ops */
+static int ec_device_open(struct inode *inode, struct file *filp)
+{
+ filp->private_data = container_of(inode->i_cdev,
+ struct cros_ec_device, cdev);
+ return 0;
+}
+
+static int ec_device_release(struct inode *inode, struct file *filp)
+{
+ return 0;
+}
+
+static ssize_t ec_device_read(struct file *filp, char __user *buffer,
+ size_t length, loff_t *offset)
+{
+ struct cros_ec_device *ec = filp->private_data;
+ char msg[sizeof(struct ec_response_get_version) +
+ sizeof(CROS_EC_DEV_VERSION)];
+ size_t count;
+ int ret;
+
+ if (*offset != 0)
+ return 0;
+
+ ret = ec_get_version(ec, msg, sizeof(msg));
+ if (ret)
+ return ret;
+
+ count = min(length, strlen(msg));
+
+ if (copy_to_user(buffer, msg, count))
+ return -EFAULT;
+
+ *offset = count;
+ return count;
+}
+
+/* Ioctls */
+static long ec_device_ioctl_xcmd(struct cros_ec_device *ec, void __user *arg)
+{
+ long ret;
+ struct cros_ec_command s_cmd = { };
+
+ if (copy_from_user(&s_cmd, arg, sizeof(s_cmd)))
+ return -EFAULT;
+
+ ret = cros_ec_cmd_xfer(ec, &s_cmd);
+ /* Only copy data to userland if data was received. */
+ if (ret < 0)
+ return ret;
+
+ if (copy_to_user(arg, &s_cmd, sizeof(s_cmd)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static long ec_device_ioctl_readmem(struct cros_ec_device *ec, void __user *arg)
+{
+ struct cros_ec_readmem s_mem = { };
+ long num;
+
+ /* Not every platform supports direct reads */
+ if (!ec->cmd_readmem)
+ return -ENOTTY;
+
+ if (copy_from_user(&s_mem, arg, sizeof(s_mem)))
+ return -EFAULT;
+
+ num = ec->cmd_readmem(ec, s_mem.offset, s_mem.bytes, s_mem.buffer);
+ if (num <= 0)
+ return num;
+
+ if (copy_to_user((void __user *)arg, &s_mem, sizeof(s_mem)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static long ec_device_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ struct cros_ec_device *ec = filp->private_data;
+
+ if (_IOC_TYPE(cmd) != CROS_EC_DEV_IOC)
+ return -ENOTTY;
+
+ switch (cmd) {
+ case CROS_EC_DEV_IOCXCMD:
+ return ec_device_ioctl_xcmd(ec, (void __user *)arg);
+ case CROS_EC_DEV_IOCRDMEM:
+ return ec_device_ioctl_readmem(ec, (void __user *)arg);
+ }
+
+ return -ENOTTY;
+}
+
+/* Module initialization */
+static const struct file_operations fops = {
+ .open = ec_device_open,
+ .release = ec_device_release,
+ .read = ec_device_read,
+ .unlocked_ioctl = ec_device_ioctl,
+};
+
+static int ec_device_probe(struct platform_device *pdev)
+{
+ struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent);
+ int retval = -ENOTTY;
+ dev_t devno = MKDEV(ec_major, 0);
+
+ /* Instantiate it (and remember the EC) */
+ cdev_init(&ec->cdev, &fops);
+
+ retval = cdev_add(&ec->cdev, devno, 1);
+ if (retval) {
+ dev_err(&pdev->dev, ": failed to add character device\n");
+ return retval;
+ }
+
+ ec->vdev = device_create(cros_class, NULL, devno, ec,
+ CROS_EC_DEV_NAME);
+ if (IS_ERR(ec->vdev)) {
+ retval = PTR_ERR(ec->vdev);
+ dev_err(&pdev->dev, ": failed to create device\n");
+ cdev_del(&ec->cdev);
+ return retval;
+ }
+
+ /* Initialize extra interfaces */
+ ec_dev_sysfs_init(ec);
+ ec_dev_lightbar_init(ec);
+
+ return 0;
+}
+
+static int ec_device_remove(struct platform_device *pdev)
+{
+ struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent);
+
+ ec_dev_lightbar_remove(ec);
+ ec_dev_sysfs_remove(ec);
+ device_destroy(cros_class, MKDEV(ec_major, 0));
+ cdev_del(&ec->cdev);
+ return 0;
+}
+
+static struct platform_driver cros_ec_dev_driver = {
+ .driver = {
+ .name = "cros-ec-ctl",
+ },
+ .probe = ec_device_probe,
+ .remove = ec_device_remove,
+};
+
+static int __init cros_ec_dev_init(void)
+{
+ int ret;
+ dev_t dev = 0;
+
+ cros_class = class_create(THIS_MODULE, "chromeos");
+ if (IS_ERR(cros_class)) {
+ pr_err(CROS_EC_DEV_NAME ": failed to register device class\n");
+ return PTR_ERR(cros_class);
+ }
+
+ /* Get a range of minor numbers (starting with 0) to work with */
+ ret = alloc_chrdev_region(&dev, 0, CROS_MAX_DEV, CROS_EC_DEV_NAME);
+ if (ret < 0) {
+ pr_err(CROS_EC_DEV_NAME ": alloc_chrdev_region() failed\n");
+ goto failed_chrdevreg;
+ }
+ ec_major = MAJOR(dev);
+
+ /* Register the driver */
+ ret = platform_driver_register(&cros_ec_dev_driver);
+ if (ret < 0) {
+ pr_warn(CROS_EC_DEV_NAME ": can't register driver: %d\n", ret);
+ goto failed_devreg;
+ }
+ return 0;
+
+failed_devreg:
+ unregister_chrdev_region(MKDEV(ec_major, 0), CROS_MAX_DEV);
+failed_chrdevreg:
+ class_destroy(cros_class);
+ return ret;
+}
+
+static void __exit cros_ec_dev_exit(void)
+{
+ platform_driver_unregister(&cros_ec_dev_driver);
+ unregister_chrdev(ec_major, CROS_EC_DEV_NAME);
+ class_destroy(cros_class);
+}
+
+module_init(cros_ec_dev_init);
+module_exit(cros_ec_dev_exit);
+
+MODULE_AUTHOR("Bill Richardson <wfrichar@chromium.org>");
+MODULE_DESCRIPTION("Userspace interface to the Chrome OS Embedded Controller");
+MODULE_VERSION("1.0");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/chrome/cros_ec_dev.h b/drivers/platform/chrome/cros_ec_dev.h
new file mode 100644
index 000000000..45d67f7e5
--- /dev/null
+++ b/drivers/platform/chrome/cros_ec_dev.h
@@ -0,0 +1,53 @@
+/*
+ * cros_ec_dev - expose the Chrome OS Embedded Controller to userspace
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _CROS_EC_DEV_H_
+#define _CROS_EC_DEV_H_
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+#include <linux/mfd/cros_ec.h>
+
+#define CROS_EC_DEV_NAME "cros_ec"
+#define CROS_EC_DEV_VERSION "1.0.0"
+
+/*
+ * @offset: within EC_LPC_ADDR_MEMMAP region
+ * @bytes: number of bytes to read. zero means "read a string" (including '\0')
+ * (at most only EC_MEMMAP_SIZE bytes can be read)
+ * @buffer: where to store the result
+ * ioctl returns the number of bytes read, negative on error
+ */
+struct cros_ec_readmem {
+ uint32_t offset;
+ uint32_t bytes;
+ uint8_t buffer[EC_MEMMAP_SIZE];
+};
+
+#define CROS_EC_DEV_IOC 0xEC
+#define CROS_EC_DEV_IOCXCMD _IOWR(CROS_EC_DEV_IOC, 0, struct cros_ec_command)
+#define CROS_EC_DEV_IOCRDMEM _IOWR(CROS_EC_DEV_IOC, 1, struct cros_ec_readmem)
+
+void ec_dev_sysfs_init(struct cros_ec_device *);
+void ec_dev_sysfs_remove(struct cros_ec_device *);
+
+void ec_dev_lightbar_init(struct cros_ec_device *);
+void ec_dev_lightbar_remove(struct cros_ec_device *);
+
+#endif /* _CROS_EC_DEV_H_ */
diff --git a/drivers/platform/chrome/cros_ec_lightbar.c b/drivers/platform/chrome/cros_ec_lightbar.c
new file mode 100644
index 000000000..b4ff47a90
--- /dev/null
+++ b/drivers/platform/chrome/cros_ec_lightbar.c
@@ -0,0 +1,367 @@
+/*
+ * cros_ec_lightbar - expose the Chromebook Pixel lightbar to userspace
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define pr_fmt(fmt) "cros_ec_lightbar: " fmt
+
+#include <linux/ctype.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/kobject.h>
+#include <linux/mfd/cros_ec.h>
+#include <linux/mfd/cros_ec_commands.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/uaccess.h>
+
+#include "cros_ec_dev.h"
+
+/* Rate-limit the lightbar interface to prevent DoS. */
+static unsigned long lb_interval_jiffies = 50 * HZ / 1000;
+
+static ssize_t interval_msec_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ unsigned long msec = lb_interval_jiffies * 1000 / HZ;
+
+ return scnprintf(buf, PAGE_SIZE, "%lu\n", msec);
+}
+
+static ssize_t interval_msec_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long msec;
+
+ if (kstrtoul(buf, 0, &msec))
+ return -EINVAL;
+
+ lb_interval_jiffies = msec * HZ / 1000;
+
+ return count;
+}
+
+static DEFINE_MUTEX(lb_mutex);
+/* Return 0 if able to throttle correctly, error otherwise */
+static int lb_throttle(void)
+{
+ static unsigned long last_access;
+ unsigned long now, next_timeslot;
+ long delay;
+ int ret = 0;
+
+ mutex_lock(&lb_mutex);
+
+ now = jiffies;
+ next_timeslot = last_access + lb_interval_jiffies;
+
+ if (time_before(now, next_timeslot)) {
+ delay = (long)(next_timeslot) - (long)now;
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (schedule_timeout(delay) > 0) {
+ /* interrupted - just abort */
+ ret = -EINTR;
+ goto out;
+ }
+ now = jiffies;
+ }
+
+ last_access = now;
+out:
+ mutex_unlock(&lb_mutex);
+
+ return ret;
+}
+
+#define INIT_MSG(P, R) { \
+ .command = EC_CMD_LIGHTBAR_CMD, \
+ .outsize = sizeof(*P), \
+ .insize = sizeof(*R), \
+ }
+
+static int get_lightbar_version(struct cros_ec_device *ec,
+ uint32_t *ver_ptr, uint32_t *flg_ptr)
+{
+ struct ec_params_lightbar *param;
+ struct ec_response_lightbar *resp;
+ struct cros_ec_command msg = INIT_MSG(param, resp);
+ int ret;
+
+ param = (struct ec_params_lightbar *)msg.outdata;
+ param->cmd = LIGHTBAR_CMD_VERSION;
+ ret = cros_ec_cmd_xfer(ec, &msg);
+ if (ret < 0)
+ return 0;
+
+ switch (msg.result) {
+ case EC_RES_INVALID_PARAM:
+ /* Pixel had no version command. */
+ if (ver_ptr)
+ *ver_ptr = 0;
+ if (flg_ptr)
+ *flg_ptr = 0;
+ return 1;
+
+ case EC_RES_SUCCESS:
+ resp = (struct ec_response_lightbar *)msg.indata;
+
+ /* Future devices w/lightbars should implement this command */
+ if (ver_ptr)
+ *ver_ptr = resp->version.num;
+ if (flg_ptr)
+ *flg_ptr = resp->version.flags;
+ return 1;
+ }
+
+ /* Anything else (ie, EC_RES_INVALID_COMMAND) - no lightbar */
+ return 0;
+}
+
+static ssize_t version_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ uint32_t version, flags;
+ struct cros_ec_device *ec = dev_get_drvdata(dev);
+ int ret;
+
+ ret = lb_throttle();
+ if (ret)
+ return ret;
+
+ /* This should always succeed, because we check during init. */
+ if (!get_lightbar_version(ec, &version, &flags))
+ return -EIO;
+
+ return scnprintf(buf, PAGE_SIZE, "%d %d\n", version, flags);
+}
+
+static ssize_t brightness_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ec_params_lightbar *param;
+ struct ec_response_lightbar *resp;
+ struct cros_ec_command msg = INIT_MSG(param, resp);
+ int ret;
+ unsigned int val;
+ struct cros_ec_device *ec = dev_get_drvdata(dev);
+
+ if (kstrtouint(buf, 0, &val))
+ return -EINVAL;
+
+ param = (struct ec_params_lightbar *)msg.outdata;
+ param->cmd = LIGHTBAR_CMD_BRIGHTNESS;
+ param->brightness.num = val;
+ ret = lb_throttle();
+ if (ret)
+ return ret;
+
+ ret = cros_ec_cmd_xfer(ec, &msg);
+ if (ret < 0)
+ return ret;
+
+ if (msg.result != EC_RES_SUCCESS)
+ return -EINVAL;
+
+ return count;
+}
+
+
+/*
+ * We expect numbers, and we'll keep reading until we find them, skipping over
+ * any whitespace (sysfs guarantees that the input is null-terminated). Every
+ * four numbers are sent to the lightbar as <LED,R,G,B>. We fail at the first
+ * parsing error, if we don't parse any numbers, or if we have numbers left
+ * over.
+ */
+static ssize_t led_rgb_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ec_params_lightbar *param;
+ struct ec_response_lightbar *resp;
+ struct cros_ec_command msg = INIT_MSG(param, resp);
+ struct cros_ec_device *ec = dev_get_drvdata(dev);
+ unsigned int val[4];
+ int ret, i = 0, j = 0, ok = 0;
+
+ do {
+ /* Skip any whitespace */
+ while (*buf && isspace(*buf))
+ buf++;
+
+ if (!*buf)
+ break;
+
+ ret = sscanf(buf, "%i", &val[i++]);
+ if (ret == 0)
+ return -EINVAL;
+
+ if (i == 4) {
+ param = (struct ec_params_lightbar *)msg.outdata;
+ param->cmd = LIGHTBAR_CMD_RGB;
+ param->rgb.led = val[0];
+ param->rgb.red = val[1];
+ param->rgb.green = val[2];
+ param->rgb.blue = val[3];
+ /*
+ * Throttle only the first of every four transactions,
+ * so that the user can update all four LEDs at once.
+ */
+ if ((j++ % 4) == 0) {
+ ret = lb_throttle();
+ if (ret)
+ return ret;
+ }
+
+ ret = cros_ec_cmd_xfer(ec, &msg);
+ if (ret < 0)
+ return ret;
+
+ if (msg.result != EC_RES_SUCCESS)
+ return -EINVAL;
+
+ i = 0;
+ ok = 1;
+ }
+
+ /* Skip over the number we just read */
+ while (*buf && !isspace(*buf))
+ buf++;
+
+ } while (*buf);
+
+ return (ok && i == 0) ? count : -EINVAL;
+}
+
+static char const *seqname[] = {
+ "ERROR", "S5", "S3", "S0", "S5S3", "S3S0",
+ "S0S3", "S3S5", "STOP", "RUN", "PULSE", "TEST", "KONAMI",
+};
+
+static ssize_t sequence_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ec_params_lightbar *param;
+ struct ec_response_lightbar *resp;
+ struct cros_ec_command msg = INIT_MSG(param, resp);
+ int ret;
+ struct cros_ec_device *ec = dev_get_drvdata(dev);
+
+ param = (struct ec_params_lightbar *)msg.outdata;
+ param->cmd = LIGHTBAR_CMD_GET_SEQ;
+ ret = lb_throttle();
+ if (ret)
+ return ret;
+
+ ret = cros_ec_cmd_xfer(ec, &msg);
+ if (ret < 0)
+ return ret;
+
+ if (msg.result != EC_RES_SUCCESS)
+ return scnprintf(buf, PAGE_SIZE,
+ "ERROR: EC returned %d\n", msg.result);
+
+ resp = (struct ec_response_lightbar *)msg.indata;
+ if (resp->get_seq.num >= ARRAY_SIZE(seqname))
+ return scnprintf(buf, PAGE_SIZE, "%d\n", resp->get_seq.num);
+ else
+ return scnprintf(buf, PAGE_SIZE, "%s\n",
+ seqname[resp->get_seq.num]);
+}
+
+static ssize_t sequence_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ec_params_lightbar *param;
+ struct ec_response_lightbar *resp;
+ struct cros_ec_command msg = INIT_MSG(param, resp);
+ unsigned int num;
+ int ret, len;
+ struct cros_ec_device *ec = dev_get_drvdata(dev);
+
+ for (len = 0; len < count; len++)
+ if (!isalnum(buf[len]))
+ break;
+
+ for (num = 0; num < ARRAY_SIZE(seqname); num++)
+ if (!strncasecmp(seqname[num], buf, len))
+ break;
+
+ if (num >= ARRAY_SIZE(seqname)) {
+ ret = kstrtouint(buf, 0, &num);
+ if (ret)
+ return ret;
+ }
+
+ param = (struct ec_params_lightbar *)msg.outdata;
+ param->cmd = LIGHTBAR_CMD_SEQ;
+ param->seq.num = num;
+ ret = lb_throttle();
+ if (ret)
+ return ret;
+
+ ret = cros_ec_cmd_xfer(ec, &msg);
+ if (ret < 0)
+ return ret;
+
+ if (msg.result != EC_RES_SUCCESS)
+ return -EINVAL;
+
+ return count;
+}
+
+/* Module initialization */
+
+static DEVICE_ATTR_RW(interval_msec);
+static DEVICE_ATTR_RO(version);
+static DEVICE_ATTR_WO(brightness);
+static DEVICE_ATTR_WO(led_rgb);
+static DEVICE_ATTR_RW(sequence);
+static struct attribute *__lb_cmds_attrs[] = {
+ &dev_attr_interval_msec.attr,
+ &dev_attr_version.attr,
+ &dev_attr_brightness.attr,
+ &dev_attr_led_rgb.attr,
+ &dev_attr_sequence.attr,
+ NULL,
+};
+static struct attribute_group lb_cmds_attr_group = {
+ .name = "lightbar",
+ .attrs = __lb_cmds_attrs,
+};
+
+void ec_dev_lightbar_init(struct cros_ec_device *ec)
+{
+ int ret = 0;
+
+ /* Only instantiate this stuff if the EC has a lightbar */
+ if (!get_lightbar_version(ec, NULL, NULL))
+ return;
+
+ ret = sysfs_create_group(&ec->vdev->kobj, &lb_cmds_attr_group);
+ if (ret)
+ pr_warn("sysfs_create_group() failed: %d\n", ret);
+}
+
+void ec_dev_lightbar_remove(struct cros_ec_device *ec)
+{
+ sysfs_remove_group(&ec->vdev->kobj, &lb_cmds_attr_group);
+}
diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
new file mode 100644
index 000000000..8f9ac4d7b
--- /dev/null
+++ b/drivers/platform/chrome/cros_ec_lpc.c
@@ -0,0 +1,319 @@
+/*
+ * cros_ec_lpc - LPC access to the Chrome OS Embedded Controller
+ *
+ * Copyright (C) 2012-2015 Google, Inc
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * This driver uses the Chrome OS EC byte-level message-based protocol for
+ * communicating the keyboard state (which keys are pressed) from a keyboard EC
+ * to the AP over some bus (such as i2c, lpc, spi). The EC does debouncing,
+ * but everything else (including deghosting) is done here. The main
+ * motivation for this is to keep the EC firmware as simple as possible, since
+ * it cannot be easily upgraded and EC flash/IRAM space is relatively
+ * expensive.
+ */
+
+#include <linux/dmi.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/mfd/cros_ec.h>
+#include <linux/mfd/cros_ec_commands.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/printk.h>
+
+#define DRV_NAME "cros_ec_lpc"
+
+static int ec_response_timed_out(void)
+{
+ unsigned long one_second = jiffies + HZ;
+
+ usleep_range(200, 300);
+ do {
+ if (!(inb(EC_LPC_ADDR_HOST_CMD) & EC_LPC_STATUS_BUSY_MASK))
+ return 0;
+ usleep_range(100, 200);
+ } while (time_before(jiffies, one_second));
+
+ return 1;
+}
+
+static int cros_ec_cmd_xfer_lpc(struct cros_ec_device *ec,
+ struct cros_ec_command *msg)
+{
+ struct ec_lpc_host_args args;
+ int csum;
+ int i;
+ int ret = 0;
+
+ if (msg->outsize > EC_PROTO2_MAX_PARAM_SIZE ||
+ msg->insize > EC_PROTO2_MAX_PARAM_SIZE) {
+ dev_err(ec->dev,
+ "invalid buffer sizes (out %d, in %d)\n",
+ msg->outsize, msg->insize);
+ return -EINVAL;
+ }
+
+ /* Now actually send the command to the EC and get the result */
+ args.flags = EC_HOST_ARGS_FLAG_FROM_HOST;
+ args.command_version = msg->version;
+ args.data_size = msg->outsize;
+
+ /* Initialize checksum */
+ csum = msg->command + args.flags +
+ args.command_version + args.data_size;
+
+ /* Copy data and update checksum */
+ for (i = 0; i < msg->outsize; i++) {
+ outb(msg->outdata[i], EC_LPC_ADDR_HOST_PARAM + i);
+ csum += msg->outdata[i];
+ }
+
+ /* Finalize checksum and write args */
+ args.checksum = csum & 0xFF;
+ outb(args.flags, EC_LPC_ADDR_HOST_ARGS);
+ outb(args.command_version, EC_LPC_ADDR_HOST_ARGS + 1);
+ outb(args.data_size, EC_LPC_ADDR_HOST_ARGS + 2);
+ outb(args.checksum, EC_LPC_ADDR_HOST_ARGS + 3);
+
+ /* Here we go */
+ outb(msg->command, EC_LPC_ADDR_HOST_CMD);
+
+ if (ec_response_timed_out()) {
+ dev_warn(ec->dev, "EC responsed timed out\n");
+ ret = -EIO;
+ goto done;
+ }
+
+ /* Check result */
+ msg->result = inb(EC_LPC_ADDR_HOST_DATA);
+
+ switch (msg->result) {
+ case EC_RES_SUCCESS:
+ break;
+ case EC_RES_IN_PROGRESS:
+ ret = -EAGAIN;
+ dev_dbg(ec->dev, "command 0x%02x in progress\n",
+ msg->command);
+ goto done;
+ default:
+ dev_dbg(ec->dev, "command 0x%02x returned %d\n",
+ msg->command, msg->result);
+ }
+
+ /* Read back args */
+ args.flags = inb(EC_LPC_ADDR_HOST_ARGS);
+ args.command_version = inb(EC_LPC_ADDR_HOST_ARGS + 1);
+ args.data_size = inb(EC_LPC_ADDR_HOST_ARGS + 2);
+ args.checksum = inb(EC_LPC_ADDR_HOST_ARGS + 3);
+
+ if (args.data_size > msg->insize) {
+ dev_err(ec->dev,
+ "packet too long (%d bytes, expected %d)",
+ args.data_size, msg->insize);
+ ret = -ENOSPC;
+ goto done;
+ }
+
+ /* Start calculating response checksum */
+ csum = msg->command + args.flags +
+ args.command_version + args.data_size;
+
+ /* Read response and update checksum */
+ for (i = 0; i < args.data_size; i++) {
+ msg->indata[i] = inb(EC_LPC_ADDR_HOST_PARAM + i);
+ csum += msg->indata[i];
+ }
+
+ /* Verify checksum */
+ if (args.checksum != (csum & 0xFF)) {
+ dev_err(ec->dev,
+ "bad packet checksum, expected %02x, got %02x\n",
+ args.checksum, csum & 0xFF);
+ ret = -EBADMSG;
+ goto done;
+ }
+
+ /* Return actual amount of data received */
+ ret = args.data_size;
+done:
+ return ret;
+}
+
+/* Returns num bytes read, or negative on error. Doesn't need locking. */
+static int cros_ec_lpc_readmem(struct cros_ec_device *ec, unsigned int offset,
+ unsigned int bytes, void *dest)
+{
+ int i = offset;
+ char *s = dest;
+ int cnt = 0;
+
+ if (offset >= EC_MEMMAP_SIZE - bytes)
+ return -EINVAL;
+
+ /* fixed length */
+ if (bytes) {
+ for (; cnt < bytes; i++, s++, cnt++)
+ *s = inb(EC_LPC_ADDR_MEMMAP + i);
+ return cnt;
+ }
+
+ /* string */
+ for (; i < EC_MEMMAP_SIZE; i++, s++) {
+ *s = inb(EC_LPC_ADDR_MEMMAP + i);
+ cnt++;
+ if (!*s)
+ break;
+ }
+
+ return cnt;
+}
+
+static int cros_ec_lpc_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct cros_ec_device *ec_dev;
+ int ret;
+
+ if (!devm_request_region(dev, EC_LPC_ADDR_MEMMAP, EC_MEMMAP_SIZE,
+ dev_name(dev))) {
+ dev_err(dev, "couldn't reserve memmap region\n");
+ return -EBUSY;
+ }
+
+ if ((inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_ID) != 'E') ||
+ (inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_ID + 1) != 'C')) {
+ dev_err(dev, "EC ID not detected\n");
+ return -ENODEV;
+ }
+
+ if (!devm_request_region(dev, EC_HOST_CMD_REGION0,
+ EC_HOST_CMD_REGION_SIZE, dev_name(dev))) {
+ dev_err(dev, "couldn't reserve region0\n");
+ return -EBUSY;
+ }
+ if (!devm_request_region(dev, EC_HOST_CMD_REGION1,
+ EC_HOST_CMD_REGION_SIZE, dev_name(dev))) {
+ dev_err(dev, "couldn't reserve region1\n");
+ return -EBUSY;
+ }
+
+ ec_dev = devm_kzalloc(dev, sizeof(*ec_dev), GFP_KERNEL);
+ if (!ec_dev)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, ec_dev);
+ ec_dev->dev = dev;
+ ec_dev->ec_name = pdev->name;
+ ec_dev->phys_name = dev_name(dev);
+ ec_dev->parent = dev;
+ ec_dev->cmd_xfer = cros_ec_cmd_xfer_lpc;
+ ec_dev->cmd_readmem = cros_ec_lpc_readmem;
+
+ ret = cros_ec_register(ec_dev);
+ if (ret) {
+ dev_err(dev, "couldn't register ec_dev (%d)\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int cros_ec_lpc_remove(struct platform_device *pdev)
+{
+ struct cros_ec_device *ec_dev;
+
+ ec_dev = platform_get_drvdata(pdev);
+ cros_ec_remove(ec_dev);
+
+ return 0;
+}
+
+static struct dmi_system_id cros_ec_lpc_dmi_table[] __initdata = {
+ {
+ /*
+ * Today all Chromebooks/boxes ship with Google_* as version and
+ * coreboot as bios vendor. No other systems with this
+ * combination are known to date.
+ */
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"),
+ DMI_MATCH(DMI_BIOS_VERSION, "Google_"),
+ },
+ },
+ {
+ /* x86-link, the Chromebook Pixel. */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
+ },
+ },
+ {
+ /* x86-peppy, the Acer C720 Chromebook. */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Peppy"),
+ },
+ },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(dmi, cros_ec_lpc_dmi_table);
+
+static struct platform_driver cros_ec_lpc_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ },
+ .probe = cros_ec_lpc_probe,
+ .remove = cros_ec_lpc_remove,
+};
+
+static struct platform_device cros_ec_lpc_device = {
+ .name = DRV_NAME
+};
+
+static int __init cros_ec_lpc_init(void)
+{
+ int ret;
+
+ if (!dmi_check_system(cros_ec_lpc_dmi_table)) {
+ pr_err(DRV_NAME ": unsupported system.\n");
+ return -ENODEV;
+ }
+
+ /* Register the driver */
+ ret = platform_driver_register(&cros_ec_lpc_driver);
+ if (ret) {
+ pr_err(DRV_NAME ": can't register driver: %d\n", ret);
+ return ret;
+ }
+
+ /* Register the device, and it'll get hooked up automatically */
+ ret = platform_device_register(&cros_ec_lpc_device);
+ if (ret) {
+ pr_err(DRV_NAME ": can't register device: %d\n", ret);
+ platform_driver_unregister(&cros_ec_lpc_driver);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void __exit cros_ec_lpc_exit(void)
+{
+ platform_device_unregister(&cros_ec_lpc_device);
+ platform_driver_unregister(&cros_ec_lpc_driver);
+}
+
+module_init(cros_ec_lpc_init);
+module_exit(cros_ec_lpc_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("ChromeOS EC LPC driver");
diff --git a/drivers/platform/chrome/cros_ec_sysfs.c b/drivers/platform/chrome/cros_ec_sysfs.c
new file mode 100644
index 000000000..fb62ab6cc
--- /dev/null
+++ b/drivers/platform/chrome/cros_ec_sysfs.c
@@ -0,0 +1,271 @@
+/*
+ * cros_ec_sysfs - expose the Chrome OS EC through sysfs
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define pr_fmt(fmt) "cros_ec_sysfs: " fmt
+
+#include <linux/ctype.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/kobject.h>
+#include <linux/mfd/cros_ec.h>
+#include <linux/mfd/cros_ec_commands.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/printk.h>
+#include <linux/stat.h>
+#include <linux/types.h>
+#include <linux/uaccess.h>
+
+#include "cros_ec_dev.h"
+
+/* Accessor functions */
+
+static ssize_t show_ec_reboot(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int count = 0;
+
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "ro|rw|cancel|cold|disable-jump|hibernate");
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ " [at-shutdown]\n");
+ return count;
+}
+
+static ssize_t store_ec_reboot(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ static const struct {
+ const char * const str;
+ uint8_t cmd;
+ uint8_t flags;
+ } words[] = {
+ {"cancel", EC_REBOOT_CANCEL, 0},
+ {"ro", EC_REBOOT_JUMP_RO, 0},
+ {"rw", EC_REBOOT_JUMP_RW, 0},
+ {"cold", EC_REBOOT_COLD, 0},
+ {"disable-jump", EC_REBOOT_DISABLE_JUMP, 0},
+ {"hibernate", EC_REBOOT_HIBERNATE, 0},
+ {"at-shutdown", -1, EC_REBOOT_FLAG_ON_AP_SHUTDOWN},
+ };
+ struct cros_ec_command msg = { 0 };
+ struct ec_params_reboot_ec *param =
+ (struct ec_params_reboot_ec *)msg.outdata;
+ int got_cmd = 0, offset = 0;
+ int i;
+ int ret;
+ struct cros_ec_device *ec = dev_get_drvdata(dev);
+
+ param->flags = 0;
+ while (1) {
+ /* Find word to start scanning */
+ while (buf[offset] && isspace(buf[offset]))
+ offset++;
+ if (!buf[offset])
+ break;
+
+ for (i = 0; i < ARRAY_SIZE(words); i++) {
+ if (!strncasecmp(words[i].str, buf+offset,
+ strlen(words[i].str))) {
+ if (words[i].flags) {
+ param->flags |= words[i].flags;
+ } else {
+ param->cmd = words[i].cmd;
+ got_cmd = 1;
+ }
+ break;
+ }
+ }
+
+ /* On to the next word, if any */
+ while (buf[offset] && !isspace(buf[offset]))
+ offset++;
+ }
+
+ if (!got_cmd)
+ return -EINVAL;
+
+ msg.command = EC_CMD_REBOOT_EC;
+ msg.outsize = sizeof(param);
+ ret = cros_ec_cmd_xfer(ec, &msg);
+ if (ret < 0)
+ return ret;
+ if (msg.result != EC_RES_SUCCESS) {
+ dev_dbg(ec->dev, "EC result %d\n", msg.result);
+ return -EINVAL;
+ }
+
+ return count;
+}
+
+static ssize_t show_ec_version(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ static const char * const image_names[] = {"unknown", "RO", "RW"};
+ struct ec_response_get_version *r_ver;
+ struct ec_response_get_chip_info *r_chip;
+ struct ec_response_board_version *r_board;
+ struct cros_ec_command msg = { 0 };
+ int ret;
+ int count = 0;
+ struct cros_ec_device *ec = dev_get_drvdata(dev);
+
+ /* Get versions. RW may change. */
+ msg.command = EC_CMD_GET_VERSION;
+ msg.insize = sizeof(*r_ver);
+ ret = cros_ec_cmd_xfer(ec, &msg);
+ if (ret < 0)
+ return ret;
+ if (msg.result != EC_RES_SUCCESS)
+ return scnprintf(buf, PAGE_SIZE,
+ "ERROR: EC returned %d\n", msg.result);
+
+ r_ver = (struct ec_response_get_version *)msg.indata;
+ /* Strings should be null-terminated, but let's be sure. */
+ r_ver->version_string_ro[sizeof(r_ver->version_string_ro) - 1] = '\0';
+ r_ver->version_string_rw[sizeof(r_ver->version_string_rw) - 1] = '\0';
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "RO version: %s\n", r_ver->version_string_ro);
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "RW version: %s\n", r_ver->version_string_rw);
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "Firmware copy: %s\n",
+ (r_ver->current_image < ARRAY_SIZE(image_names) ?
+ image_names[r_ver->current_image] : "?"));
+
+ /* Get build info. */
+ msg.command = EC_CMD_GET_BUILD_INFO;
+ msg.insize = sizeof(msg.indata);
+ ret = cros_ec_cmd_xfer(ec, &msg);
+ if (ret < 0)
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "Build info: XFER ERROR %d\n", ret);
+ else if (msg.result != EC_RES_SUCCESS)
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "Build info: EC error %d\n", msg.result);
+ else {
+ msg.indata[sizeof(msg.indata) - 1] = '\0';
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "Build info: %s\n", msg.indata);
+ }
+
+ /* Get chip info. */
+ msg.command = EC_CMD_GET_CHIP_INFO;
+ msg.insize = sizeof(*r_chip);
+ ret = cros_ec_cmd_xfer(ec, &msg);
+ if (ret < 0)
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "Chip info: XFER ERROR %d\n", ret);
+ else if (msg.result != EC_RES_SUCCESS)
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "Chip info: EC error %d\n", msg.result);
+ else {
+ r_chip = (struct ec_response_get_chip_info *)msg.indata;
+
+ r_chip->vendor[sizeof(r_chip->vendor) - 1] = '\0';
+ r_chip->name[sizeof(r_chip->name) - 1] = '\0';
+ r_chip->revision[sizeof(r_chip->revision) - 1] = '\0';
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "Chip vendor: %s\n", r_chip->vendor);
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "Chip name: %s\n", r_chip->name);
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "Chip revision: %s\n", r_chip->revision);
+ }
+
+ /* Get board version */
+ msg.command = EC_CMD_GET_BOARD_VERSION;
+ msg.insize = sizeof(*r_board);
+ ret = cros_ec_cmd_xfer(ec, &msg);
+ if (ret < 0)
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "Board version: XFER ERROR %d\n", ret);
+ else if (msg.result != EC_RES_SUCCESS)
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "Board version: EC error %d\n", msg.result);
+ else {
+ r_board = (struct ec_response_board_version *)msg.indata;
+
+ count += scnprintf(buf + count, PAGE_SIZE - count,
+ "Board version: %d\n",
+ r_board->board_version);
+ }
+
+ return count;
+}
+
+static ssize_t show_ec_flashinfo(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ec_response_flash_info *resp;
+ struct cros_ec_command msg = { 0 };
+ int ret;
+ struct cros_ec_device *ec = dev_get_drvdata(dev);
+
+ /* The flash info shouldn't ever change, but ask each time anyway. */
+ msg.command = EC_CMD_FLASH_INFO;
+ msg.insize = sizeof(*resp);
+ ret = cros_ec_cmd_xfer(ec, &msg);
+ if (ret < 0)
+ return ret;
+ if (msg.result != EC_RES_SUCCESS)
+ return scnprintf(buf, PAGE_SIZE,
+ "ERROR: EC returned %d\n", msg.result);
+
+ resp = (struct ec_response_flash_info *)msg.indata;
+
+ return scnprintf(buf, PAGE_SIZE,
+ "FlashSize %d\nWriteSize %d\n"
+ "EraseSize %d\nProtectSize %d\n",
+ resp->flash_size, resp->write_block_size,
+ resp->erase_block_size, resp->protect_block_size);
+}
+
+/* Module initialization */
+
+static DEVICE_ATTR(reboot, S_IWUSR | S_IRUGO, show_ec_reboot, store_ec_reboot);
+static DEVICE_ATTR(version, S_IRUGO, show_ec_version, NULL);
+static DEVICE_ATTR(flashinfo, S_IRUGO, show_ec_flashinfo, NULL);
+
+static struct attribute *__ec_attrs[] = {
+ &dev_attr_reboot.attr,
+ &dev_attr_version.attr,
+ &dev_attr_flashinfo.attr,
+ NULL,
+};
+
+static struct attribute_group ec_attr_group = {
+ .attrs = __ec_attrs,
+};
+
+void ec_dev_sysfs_init(struct cros_ec_device *ec)
+{
+ int error;
+
+ error = sysfs_create_group(&ec->vdev->kobj, &ec_attr_group);
+ if (error)
+ pr_warn("failed to create group: %d\n", error);
+}
+
+void ec_dev_sysfs_remove(struct cros_ec_device *ec)
+{
+ sysfs_remove_group(&ec->vdev->kobj, &ec_attr_group);
+}
diff --git a/drivers/platform/goldfish/Kconfig b/drivers/platform/goldfish/Kconfig
new file mode 100644
index 000000000..635ef25cc
--- /dev/null
+++ b/drivers/platform/goldfish/Kconfig
@@ -0,0 +1,5 @@
+config GOLDFISH_PIPE
+ tristate "Goldfish virtual device for QEMU pipes"
+ ---help---
+ This is a virtual device to drive the QEMU pipe interface used by
+ the Goldfish Android Virtual Device.
diff --git a/drivers/platform/goldfish/Makefile b/drivers/platform/goldfish/Makefile
new file mode 100644
index 000000000..a0022395e
--- /dev/null
+++ b/drivers/platform/goldfish/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for Goldfish platform specific drivers
+#
+obj-$(CONFIG_GOLDFISH) += pdev_bus.o
+obj-$(CONFIG_GOLDFISH_PIPE) += goldfish_pipe.o
diff --git a/drivers/platform/goldfish/goldfish_pipe.c b/drivers/platform/goldfish/goldfish_pipe.c
new file mode 100644
index 000000000..d9a09d963
--- /dev/null
+++ b/drivers/platform/goldfish/goldfish_pipe.c
@@ -0,0 +1,628 @@
+/*
+ * Copyright (C) 2011 Google, Inc.
+ * Copyright (C) 2012 Intel, Inc.
+ * Copyright (C) 2013 Intel, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+/* This source file contains the implementation of a special device driver
+ * that intends to provide a *very* fast communication channel between the
+ * guest system and the QEMU emulator.
+ *
+ * Usage from the guest is simply the following (error handling simplified):
+ *
+ * int fd = open("/dev/qemu_pipe",O_RDWR);
+ * .... write() or read() through the pipe.
+ *
+ * This driver doesn't deal with the exact protocol used during the session.
+ * It is intended to be as simple as something like:
+ *
+ * // do this _just_ after opening the fd to connect to a specific
+ * // emulator service.
+ * const char* msg = "<pipename>";
+ * if (write(fd, msg, strlen(msg)+1) < 0) {
+ * ... could not connect to <pipename> service
+ * close(fd);
+ * }
+ *
+ * // after this, simply read() and write() to communicate with the
+ * // service. Exact protocol details left as an exercise to the reader.
+ *
+ * This driver is very fast because it doesn't copy any data through
+ * intermediate buffers, since the emulator is capable of translating
+ * guest user addresses into host ones.
+ *
+ * Note that we must however ensure that each user page involved in the
+ * exchange is properly mapped during a transfer.
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/miscdevice.h>
+#include <linux/platform_device.h>
+#include <linux/poll.h>
+#include <linux/sched.h>
+#include <linux/bitops.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/goldfish.h>
+
+/*
+ * IMPORTANT: The following constants must match the ones used and defined
+ * in external/qemu/hw/goldfish_pipe.c in the Android source tree.
+ */
+
+/* pipe device registers */
+#define PIPE_REG_COMMAND 0x00 /* write: value = command */
+#define PIPE_REG_STATUS 0x04 /* read */
+#define PIPE_REG_CHANNEL 0x08 /* read/write: channel id */
+#define PIPE_REG_CHANNEL_HIGH 0x30 /* read/write: channel id */
+#define PIPE_REG_SIZE 0x0c /* read/write: buffer size */
+#define PIPE_REG_ADDRESS 0x10 /* write: physical address */
+#define PIPE_REG_ADDRESS_HIGH 0x34 /* write: physical address */
+#define PIPE_REG_WAKES 0x14 /* read: wake flags */
+#define PIPE_REG_PARAMS_ADDR_LOW 0x18 /* read/write: batch data address */
+#define PIPE_REG_PARAMS_ADDR_HIGH 0x1c /* read/write: batch data address */
+#define PIPE_REG_ACCESS_PARAMS 0x20 /* write: batch access */
+
+/* list of commands for PIPE_REG_COMMAND */
+#define CMD_OPEN 1 /* open new channel */
+#define CMD_CLOSE 2 /* close channel (from guest) */
+#define CMD_POLL 3 /* poll read/write status */
+
+/* List of bitflags returned in status of CMD_POLL command */
+#define PIPE_POLL_IN (1 << 0)
+#define PIPE_POLL_OUT (1 << 1)
+#define PIPE_POLL_HUP (1 << 2)
+
+/* The following commands are related to write operations */
+#define CMD_WRITE_BUFFER 4 /* send a user buffer to the emulator */
+#define CMD_WAKE_ON_WRITE 5 /* tell the emulator to wake us when writing
+ is possible */
+
+/* The following commands are related to read operations, they must be
+ * listed in the same order than the corresponding write ones, since we
+ * will use (CMD_READ_BUFFER - CMD_WRITE_BUFFER) as a special offset
+ * in goldfish_pipe_read_write() below.
+ */
+#define CMD_READ_BUFFER 6 /* receive a user buffer from the emulator */
+#define CMD_WAKE_ON_READ 7 /* tell the emulator to wake us when reading
+ * is possible */
+
+/* Possible status values used to signal errors - see goldfish_pipe_error_convert */
+#define PIPE_ERROR_INVAL -1
+#define PIPE_ERROR_AGAIN -2
+#define PIPE_ERROR_NOMEM -3
+#define PIPE_ERROR_IO -4
+
+/* Bit-flags used to signal events from the emulator */
+#define PIPE_WAKE_CLOSED (1 << 0) /* emulator closed pipe */
+#define PIPE_WAKE_READ (1 << 1) /* pipe can now be read from */
+#define PIPE_WAKE_WRITE (1 << 2) /* pipe can now be written to */
+
+struct access_params {
+ unsigned long channel;
+ u32 size;
+ unsigned long address;
+ u32 cmd;
+ u32 result;
+ /* reserved for future extension */
+ u32 flags;
+};
+
+/* The global driver data. Holds a reference to the i/o page used to
+ * communicate with the emulator, and a wake queue for blocked tasks
+ * waiting to be awoken.
+ */
+struct goldfish_pipe_dev {
+ spinlock_t lock;
+ unsigned char __iomem *base;
+ struct access_params *aps;
+ int irq;
+};
+
+static struct goldfish_pipe_dev pipe_dev[1];
+
+/* This data type models a given pipe instance */
+struct goldfish_pipe {
+ struct goldfish_pipe_dev *dev;
+ struct mutex lock;
+ unsigned long flags;
+ wait_queue_head_t wake_queue;
+};
+
+
+/* Bit flags for the 'flags' field */
+enum {
+ BIT_CLOSED_ON_HOST = 0, /* pipe closed by host */
+ BIT_WAKE_ON_WRITE = 1, /* want to be woken on writes */
+ BIT_WAKE_ON_READ = 2, /* want to be woken on reads */
+};
+
+
+static u32 goldfish_cmd_status(struct goldfish_pipe *pipe, u32 cmd)
+{
+ unsigned long flags;
+ u32 status;
+ struct goldfish_pipe_dev *dev = pipe->dev;
+
+ spin_lock_irqsave(&dev->lock, flags);
+ gf_write64((u64)(unsigned long)pipe, dev->base + PIPE_REG_CHANNEL,
+ dev->base + PIPE_REG_CHANNEL_HIGH);
+ writel(cmd, dev->base + PIPE_REG_COMMAND);
+ status = readl(dev->base + PIPE_REG_STATUS);
+ spin_unlock_irqrestore(&dev->lock, flags);
+ return status;
+}
+
+static void goldfish_cmd(struct goldfish_pipe *pipe, u32 cmd)
+{
+ unsigned long flags;
+ struct goldfish_pipe_dev *dev = pipe->dev;
+
+ spin_lock_irqsave(&dev->lock, flags);
+ gf_write64((u64)(unsigned long)pipe, dev->base + PIPE_REG_CHANNEL,
+ dev->base + PIPE_REG_CHANNEL_HIGH);
+ writel(cmd, dev->base + PIPE_REG_COMMAND);
+ spin_unlock_irqrestore(&dev->lock, flags);
+}
+
+/* This function converts an error code returned by the emulator through
+ * the PIPE_REG_STATUS i/o register into a valid negative errno value.
+ */
+static int goldfish_pipe_error_convert(int status)
+{
+ switch (status) {
+ case PIPE_ERROR_AGAIN:
+ return -EAGAIN;
+ case PIPE_ERROR_NOMEM:
+ return -ENOMEM;
+ case PIPE_ERROR_IO:
+ return -EIO;
+ default:
+ return -EINVAL;
+ }
+}
+
+/*
+ * Notice: QEMU will return 0 for un-known register access, indicating
+ * param_acess is supported or not
+ */
+static int valid_batchbuffer_addr(struct goldfish_pipe_dev *dev,
+ struct access_params *aps)
+{
+ u32 aph, apl;
+ u64 paddr;
+ aph = readl(dev->base + PIPE_REG_PARAMS_ADDR_HIGH);
+ apl = readl(dev->base + PIPE_REG_PARAMS_ADDR_LOW);
+
+ paddr = ((u64)aph << 32) | apl;
+ if (paddr != (__pa(aps)))
+ return 0;
+ return 1;
+}
+
+/* 0 on success */
+static int setup_access_params_addr(struct platform_device *pdev,
+ struct goldfish_pipe_dev *dev)
+{
+ u64 paddr;
+ struct access_params *aps;
+
+ aps = devm_kzalloc(&pdev->dev, sizeof(struct access_params), GFP_KERNEL);
+ if (!aps)
+ return -1;
+
+ /* FIXME */
+ paddr = __pa(aps);
+ writel((u32)(paddr >> 32), dev->base + PIPE_REG_PARAMS_ADDR_HIGH);
+ writel((u32)paddr, dev->base + PIPE_REG_PARAMS_ADDR_LOW);
+
+ if (valid_batchbuffer_addr(dev, aps)) {
+ dev->aps = aps;
+ return 0;
+ } else
+ return -1;
+}
+
+/* A value that will not be set by qemu emulator */
+#define INITIAL_BATCH_RESULT (0xdeadbeaf)
+static int access_with_param(struct goldfish_pipe_dev *dev, const int cmd,
+ unsigned long address, unsigned long avail,
+ struct goldfish_pipe *pipe, int *status)
+{
+ struct access_params *aps = dev->aps;
+
+ if (aps == NULL)
+ return -1;
+
+ aps->result = INITIAL_BATCH_RESULT;
+ aps->channel = (unsigned long)pipe;
+ aps->size = avail;
+ aps->address = address;
+ aps->cmd = cmd;
+ writel(cmd, dev->base + PIPE_REG_ACCESS_PARAMS);
+ /*
+ * If the aps->result has not changed, that means
+ * that the batch command failed
+ */
+ if (aps->result == INITIAL_BATCH_RESULT)
+ return -1;
+ *status = aps->result;
+ return 0;
+}
+
+/* This function is used for both reading from and writing to a given
+ * pipe.
+ */
+static ssize_t goldfish_pipe_read_write(struct file *filp, char __user *buffer,
+ size_t bufflen, int is_write)
+{
+ unsigned long irq_flags;
+ struct goldfish_pipe *pipe = filp->private_data;
+ struct goldfish_pipe_dev *dev = pipe->dev;
+ const int cmd_offset = is_write ? 0
+ : (CMD_READ_BUFFER - CMD_WRITE_BUFFER);
+ unsigned long address, address_end;
+ int ret = 0;
+
+ /* If the emulator already closed the pipe, no need to go further */
+ if (test_bit(BIT_CLOSED_ON_HOST, &pipe->flags))
+ return -EIO;
+
+ /* Null reads or writes succeeds */
+ if (unlikely(bufflen) == 0)
+ return 0;
+
+ /* Check the buffer range for access */
+ if (!access_ok(is_write ? VERIFY_WRITE : VERIFY_READ,
+ buffer, bufflen))
+ return -EFAULT;
+
+ /* Serialize access to the pipe */
+ if (mutex_lock_interruptible(&pipe->lock))
+ return -ERESTARTSYS;
+
+ address = (unsigned long)(void *)buffer;
+ address_end = address + bufflen;
+
+ while (address < address_end) {
+ unsigned long page_end = (address & PAGE_MASK) + PAGE_SIZE;
+ unsigned long next = page_end < address_end ? page_end
+ : address_end;
+ unsigned long avail = next - address;
+ int status, wakeBit;
+
+ /* Ensure that the corresponding page is properly mapped */
+ /* FIXME: this isn't safe or sufficient - use get_user_pages */
+ if (is_write) {
+ char c;
+ /* Ensure that the page is mapped and readable */
+ if (__get_user(c, (char __user *)address)) {
+ if (!ret)
+ ret = -EFAULT;
+ break;
+ }
+ } else {
+ /* Ensure that the page is mapped and writable */
+ if (__put_user(0, (char __user *)address)) {
+ if (!ret)
+ ret = -EFAULT;
+ break;
+ }
+ }
+
+ /* Now, try to transfer the bytes in the current page */
+ spin_lock_irqsave(&dev->lock, irq_flags);
+ if (access_with_param(dev, CMD_WRITE_BUFFER + cmd_offset,
+ address, avail, pipe, &status)) {
+ gf_write64((u64)(unsigned long)pipe,
+ dev->base + PIPE_REG_CHANNEL,
+ dev->base + PIPE_REG_CHANNEL_HIGH);
+ writel(avail, dev->base + PIPE_REG_SIZE);
+ gf_write64(address, dev->base + PIPE_REG_ADDRESS,
+ dev->base + PIPE_REG_ADDRESS_HIGH);
+ writel(CMD_WRITE_BUFFER + cmd_offset,
+ dev->base + PIPE_REG_COMMAND);
+ status = readl(dev->base + PIPE_REG_STATUS);
+ }
+ spin_unlock_irqrestore(&dev->lock, irq_flags);
+
+ if (status > 0) { /* Correct transfer */
+ ret += status;
+ address += status;
+ continue;
+ }
+
+ if (status == 0) /* EOF */
+ break;
+
+ /* An error occured. If we already transfered stuff, just
+ * return with its count. We expect the next call to return
+ * an error code */
+ if (ret > 0)
+ break;
+
+ /* If the error is not PIPE_ERROR_AGAIN, or if we are not in
+ * non-blocking mode, just return the error code.
+ */
+ if (status != PIPE_ERROR_AGAIN ||
+ (filp->f_flags & O_NONBLOCK) != 0) {
+ ret = goldfish_pipe_error_convert(status);
+ break;
+ }
+
+ /* We will have to wait until more data/space is available.
+ * First, mark the pipe as waiting for a specific wake signal.
+ */
+ wakeBit = is_write ? BIT_WAKE_ON_WRITE : BIT_WAKE_ON_READ;
+ set_bit(wakeBit, &pipe->flags);
+
+ /* Tell the emulator we're going to wait for a wake event */
+ goldfish_cmd(pipe, CMD_WAKE_ON_WRITE + cmd_offset);
+
+ /* Unlock the pipe, then wait for the wake signal */
+ mutex_unlock(&pipe->lock);
+
+ while (test_bit(wakeBit, &pipe->flags)) {
+ if (wait_event_interruptible(
+ pipe->wake_queue,
+ !test_bit(wakeBit, &pipe->flags)))
+ return -ERESTARTSYS;
+
+ if (test_bit(BIT_CLOSED_ON_HOST, &pipe->flags))
+ return -EIO;
+ }
+
+ /* Try to re-acquire the lock */
+ if (mutex_lock_interruptible(&pipe->lock))
+ return -ERESTARTSYS;
+
+ /* Try the transfer again */
+ continue;
+ }
+ mutex_unlock(&pipe->lock);
+ return ret;
+}
+
+static ssize_t goldfish_pipe_read(struct file *filp, char __user *buffer,
+ size_t bufflen, loff_t *ppos)
+{
+ return goldfish_pipe_read_write(filp, buffer, bufflen, 0);
+}
+
+static ssize_t goldfish_pipe_write(struct file *filp,
+ const char __user *buffer, size_t bufflen,
+ loff_t *ppos)
+{
+ return goldfish_pipe_read_write(filp, (char __user *)buffer,
+ bufflen, 1);
+}
+
+
+static unsigned int goldfish_pipe_poll(struct file *filp, poll_table *wait)
+{
+ struct goldfish_pipe *pipe = filp->private_data;
+ unsigned int mask = 0;
+ int status;
+
+ mutex_lock(&pipe->lock);
+
+ poll_wait(filp, &pipe->wake_queue, wait);
+
+ status = goldfish_cmd_status(pipe, CMD_POLL);
+
+ mutex_unlock(&pipe->lock);
+
+ if (status & PIPE_POLL_IN)
+ mask |= POLLIN | POLLRDNORM;
+
+ if (status & PIPE_POLL_OUT)
+ mask |= POLLOUT | POLLWRNORM;
+
+ if (status & PIPE_POLL_HUP)
+ mask |= POLLHUP;
+
+ if (test_bit(BIT_CLOSED_ON_HOST, &pipe->flags))
+ mask |= POLLERR;
+
+ return mask;
+}
+
+static irqreturn_t goldfish_pipe_interrupt(int irq, void *dev_id)
+{
+ struct goldfish_pipe_dev *dev = dev_id;
+ unsigned long irq_flags;
+ int count = 0;
+
+ /* We're going to read from the emulator a list of (channel,flags)
+ * pairs corresponding to the wake events that occured on each
+ * blocked pipe (i.e. channel).
+ */
+ spin_lock_irqsave(&dev->lock, irq_flags);
+ for (;;) {
+ /* First read the channel, 0 means the end of the list */
+ struct goldfish_pipe *pipe;
+ unsigned long wakes;
+ unsigned long channel = 0;
+
+#ifdef CONFIG_64BIT
+ channel = (u64)readl(dev->base + PIPE_REG_CHANNEL_HIGH) << 32;
+
+ if (channel == 0)
+ break;
+#endif
+ channel |= readl(dev->base + PIPE_REG_CHANNEL);
+
+ if (channel == 0)
+ break;
+
+ /* Convert channel to struct pipe pointer + read wake flags */
+ wakes = readl(dev->base + PIPE_REG_WAKES);
+ pipe = (struct goldfish_pipe *)(ptrdiff_t)channel;
+
+ /* Did the emulator just closed a pipe? */
+ if (wakes & PIPE_WAKE_CLOSED) {
+ set_bit(BIT_CLOSED_ON_HOST, &pipe->flags);
+ wakes |= PIPE_WAKE_READ | PIPE_WAKE_WRITE;
+ }
+ if (wakes & PIPE_WAKE_READ)
+ clear_bit(BIT_WAKE_ON_READ, &pipe->flags);
+ if (wakes & PIPE_WAKE_WRITE)
+ clear_bit(BIT_WAKE_ON_WRITE, &pipe->flags);
+
+ wake_up_interruptible(&pipe->wake_queue);
+ count++;
+ }
+ spin_unlock_irqrestore(&dev->lock, irq_flags);
+
+ return (count == 0) ? IRQ_NONE : IRQ_HANDLED;
+}
+
+/**
+ * goldfish_pipe_open - open a channel to the AVD
+ * @inode: inode of device
+ * @file: file struct of opener
+ *
+ * Create a new pipe link between the emulator and the use application.
+ * Each new request produces a new pipe.
+ *
+ * Note: we use the pipe ID as a mux. All goldfish emulations are 32bit
+ * right now so this is fine. A move to 64bit will need this addressing
+ */
+static int goldfish_pipe_open(struct inode *inode, struct file *file)
+{
+ struct goldfish_pipe *pipe;
+ struct goldfish_pipe_dev *dev = pipe_dev;
+ int32_t status;
+
+ /* Allocate new pipe kernel object */
+ pipe = kzalloc(sizeof(*pipe), GFP_KERNEL);
+ if (pipe == NULL)
+ return -ENOMEM;
+
+ pipe->dev = dev;
+ mutex_init(&pipe->lock);
+ init_waitqueue_head(&pipe->wake_queue);
+
+ /*
+ * Now, tell the emulator we're opening a new pipe. We use the
+ * pipe object's address as the channel identifier for simplicity.
+ */
+
+ status = goldfish_cmd_status(pipe, CMD_OPEN);
+ if (status < 0) {
+ kfree(pipe);
+ return status;
+ }
+
+ /* All is done, save the pipe into the file's private data field */
+ file->private_data = pipe;
+ return 0;
+}
+
+static int goldfish_pipe_release(struct inode *inode, struct file *filp)
+{
+ struct goldfish_pipe *pipe = filp->private_data;
+
+ /* The guest is closing the channel, so tell the emulator right now */
+ goldfish_cmd(pipe, CMD_CLOSE);
+ kfree(pipe);
+ filp->private_data = NULL;
+ return 0;
+}
+
+static const struct file_operations goldfish_pipe_fops = {
+ .owner = THIS_MODULE,
+ .read = goldfish_pipe_read,
+ .write = goldfish_pipe_write,
+ .poll = goldfish_pipe_poll,
+ .open = goldfish_pipe_open,
+ .release = goldfish_pipe_release,
+};
+
+static struct miscdevice goldfish_pipe_device = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "goldfish_pipe",
+ .fops = &goldfish_pipe_fops,
+};
+
+static int goldfish_pipe_probe(struct platform_device *pdev)
+{
+ int err;
+ struct resource *r;
+ struct goldfish_pipe_dev *dev = pipe_dev;
+
+ /* not thread safe, but this should not happen */
+ WARN_ON(dev->base != NULL);
+
+ spin_lock_init(&dev->lock);
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (r == NULL || resource_size(r) < PAGE_SIZE) {
+ dev_err(&pdev->dev, "can't allocate i/o page\n");
+ return -EINVAL;
+ }
+ dev->base = devm_ioremap(&pdev->dev, r->start, PAGE_SIZE);
+ if (dev->base == NULL) {
+ dev_err(&pdev->dev, "ioremap failed\n");
+ return -EINVAL;
+ }
+
+ r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (r == NULL) {
+ err = -EINVAL;
+ goto error;
+ }
+ dev->irq = r->start;
+
+ err = devm_request_irq(&pdev->dev, dev->irq, goldfish_pipe_interrupt,
+ IRQF_SHARED, "goldfish_pipe", dev);
+ if (err) {
+ dev_err(&pdev->dev, "unable to allocate IRQ\n");
+ goto error;
+ }
+
+ err = misc_register(&goldfish_pipe_device);
+ if (err) {
+ dev_err(&pdev->dev, "unable to register device\n");
+ goto error;
+ }
+ setup_access_params_addr(pdev, dev);
+ return 0;
+
+error:
+ dev->base = NULL;
+ return err;
+}
+
+static int goldfish_pipe_remove(struct platform_device *pdev)
+{
+ struct goldfish_pipe_dev *dev = pipe_dev;
+ misc_deregister(&goldfish_pipe_device);
+ dev->base = NULL;
+ return 0;
+}
+
+static struct platform_driver goldfish_pipe = {
+ .probe = goldfish_pipe_probe,
+ .remove = goldfish_pipe_remove,
+ .driver = {
+ .name = "goldfish_pipe"
+ }
+};
+
+module_platform_driver(goldfish_pipe);
+MODULE_AUTHOR("David Turner <digit@google.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/goldfish/pdev_bus.c b/drivers/platform/goldfish/pdev_bus.c
new file mode 100644
index 000000000..8c43589c3
--- /dev/null
+++ b/drivers/platform/goldfish/pdev_bus.c
@@ -0,0 +1,239 @@
+/*
+ * Copyright (C) 2007 Google, Inc.
+ * Copyright (C) 2011 Intel, Inc.
+ * Copyright (C) 2013 Intel, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+
+#define PDEV_BUS_OP_DONE (0x00)
+#define PDEV_BUS_OP_REMOVE_DEV (0x04)
+#define PDEV_BUS_OP_ADD_DEV (0x08)
+
+#define PDEV_BUS_OP_INIT (0x00)
+
+#define PDEV_BUS_OP (0x00)
+#define PDEV_BUS_GET_NAME (0x04)
+#define PDEV_BUS_NAME_LEN (0x08)
+#define PDEV_BUS_ID (0x0c)
+#define PDEV_BUS_IO_BASE (0x10)
+#define PDEV_BUS_IO_SIZE (0x14)
+#define PDEV_BUS_IRQ (0x18)
+#define PDEV_BUS_IRQ_COUNT (0x1c)
+#define PDEV_BUS_GET_NAME_HIGH (0x20)
+
+struct pdev_bus_dev {
+ struct list_head list;
+ struct platform_device pdev;
+ struct resource resources[0];
+};
+
+static void goldfish_pdev_worker(struct work_struct *work);
+
+static void __iomem *pdev_bus_base;
+static unsigned long pdev_bus_addr;
+static unsigned long pdev_bus_len;
+static u32 pdev_bus_irq;
+static LIST_HEAD(pdev_bus_new_devices);
+static LIST_HEAD(pdev_bus_registered_devices);
+static LIST_HEAD(pdev_bus_removed_devices);
+static DECLARE_WORK(pdev_bus_worker, goldfish_pdev_worker);
+
+
+static void goldfish_pdev_worker(struct work_struct *work)
+{
+ int ret;
+ struct pdev_bus_dev *pos, *n;
+
+ list_for_each_entry_safe(pos, n, &pdev_bus_removed_devices, list) {
+ list_del(&pos->list);
+ platform_device_unregister(&pos->pdev);
+ kfree(pos);
+ }
+ list_for_each_entry_safe(pos, n, &pdev_bus_new_devices, list) {
+ list_del(&pos->list);
+ ret = platform_device_register(&pos->pdev);
+ if (ret)
+ pr_err("goldfish_pdev_worker failed to register device, %s\n",
+ pos->pdev.name);
+ list_add_tail(&pos->list, &pdev_bus_registered_devices);
+ }
+}
+
+static void goldfish_pdev_remove(void)
+{
+ struct pdev_bus_dev *pos, *n;
+ u32 base;
+
+ base = readl(pdev_bus_base + PDEV_BUS_IO_BASE);
+
+ list_for_each_entry_safe(pos, n, &pdev_bus_new_devices, list) {
+ if (pos->resources[0].start == base) {
+ list_del(&pos->list);
+ kfree(pos);
+ return;
+ }
+ }
+ list_for_each_entry_safe(pos, n, &pdev_bus_registered_devices, list) {
+ if (pos->resources[0].start == base) {
+ list_del(&pos->list);
+ list_add_tail(&pos->list, &pdev_bus_removed_devices);
+ schedule_work(&pdev_bus_worker);
+ return;
+ }
+ };
+ pr_err("goldfish_pdev_remove could not find device at %x\n", base);
+}
+
+static int goldfish_new_pdev(void)
+{
+ struct pdev_bus_dev *dev;
+ u32 name_len;
+ u32 irq = -1, irq_count;
+ int resource_count = 2;
+ u32 base;
+ char *name;
+
+ base = readl(pdev_bus_base + PDEV_BUS_IO_BASE);
+
+ irq_count = readl(pdev_bus_base + PDEV_BUS_IRQ_COUNT);
+ name_len = readl(pdev_bus_base + PDEV_BUS_NAME_LEN);
+ if (irq_count)
+ resource_count++;
+
+ dev = kzalloc(sizeof(*dev) +
+ sizeof(struct resource) * resource_count +
+ name_len + 1 + sizeof(*dev->pdev.dev.dma_mask), GFP_ATOMIC);
+ if (dev == NULL)
+ return -ENOMEM;
+
+ dev->pdev.num_resources = resource_count;
+ dev->pdev.resource = (struct resource *)(dev + 1);
+ dev->pdev.name = name = (char *)(dev->pdev.resource + resource_count);
+ dev->pdev.dev.coherent_dma_mask = ~0;
+ dev->pdev.dev.dma_mask = (void *)(dev->pdev.name + name_len + 1);
+ *dev->pdev.dev.dma_mask = ~0;
+
+#ifdef CONFIG_64BIT
+ writel((u32)((u64)name>>32), pdev_bus_base + PDEV_BUS_GET_NAME_HIGH);
+#endif
+ writel((u32)(unsigned long)name, pdev_bus_base + PDEV_BUS_GET_NAME);
+ name[name_len] = '\0';
+ dev->pdev.id = readl(pdev_bus_base + PDEV_BUS_ID);
+ dev->pdev.resource[0].start = base;
+ dev->pdev.resource[0].end = base +
+ readl(pdev_bus_base + PDEV_BUS_IO_SIZE) - 1;
+ dev->pdev.resource[0].flags = IORESOURCE_MEM;
+ if (irq_count) {
+ irq = readl(pdev_bus_base + PDEV_BUS_IRQ);
+ dev->pdev.resource[1].start = irq;
+ dev->pdev.resource[1].end = irq + irq_count - 1;
+ dev->pdev.resource[1].flags = IORESOURCE_IRQ;
+ }
+
+ pr_debug("goldfish_new_pdev %s at %x irq %d\n", name, base, irq);
+ list_add_tail(&dev->list, &pdev_bus_new_devices);
+ schedule_work(&pdev_bus_worker);
+
+ return 0;
+}
+
+static irqreturn_t goldfish_pdev_bus_interrupt(int irq, void *dev_id)
+{
+ irqreturn_t ret = IRQ_NONE;
+ while (1) {
+ u32 op = readl(pdev_bus_base + PDEV_BUS_OP);
+ switch (op) {
+ case PDEV_BUS_OP_DONE:
+ return IRQ_NONE;
+
+ case PDEV_BUS_OP_REMOVE_DEV:
+ goldfish_pdev_remove();
+ break;
+
+ case PDEV_BUS_OP_ADD_DEV:
+ goldfish_new_pdev();
+ break;
+ }
+ ret = IRQ_HANDLED;
+ }
+ return ret;
+}
+
+static int goldfish_pdev_bus_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct resource *r;
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (r == NULL)
+ return -EINVAL;
+
+ pdev_bus_addr = r->start;
+ pdev_bus_len = resource_size(r);
+
+ pdev_bus_base = ioremap(pdev_bus_addr, pdev_bus_len);
+ if (pdev_bus_base == NULL) {
+ ret = -ENOMEM;
+ dev_err(&pdev->dev, "unable to map Goldfish MMIO.\n");
+ goto free_resources;
+ }
+
+ r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (r == NULL) {
+ ret = -ENOENT;
+ goto free_map;
+ }
+
+ pdev_bus_irq = r->start;
+
+ ret = request_irq(pdev_bus_irq, goldfish_pdev_bus_interrupt,
+ IRQF_SHARED, "goldfish_pdev_bus", pdev);
+ if (ret) {
+ dev_err(&pdev->dev, "unable to request Goldfish IRQ\n");
+ goto free_map;
+ }
+
+ writel(PDEV_BUS_OP_INIT, pdev_bus_base + PDEV_BUS_OP);
+ return 0;
+
+free_map:
+ iounmap(pdev_bus_base);
+free_resources:
+ release_mem_region(pdev_bus_addr, pdev_bus_len);
+ return ret;
+}
+
+static int goldfish_pdev_bus_remove(struct platform_device *pdev)
+{
+ iounmap(pdev_bus_base);
+ free_irq(pdev_bus_irq, pdev);
+ release_mem_region(pdev_bus_addr, pdev_bus_len);
+ return 0;
+}
+
+static struct platform_driver goldfish_pdev_bus_driver = {
+ .probe = goldfish_pdev_bus_probe,
+ .remove = goldfish_pdev_bus_remove,
+ .driver = {
+ .name = "goldfish_pdev_bus"
+ }
+};
+
+module_platform_driver(goldfish_pdev_bus_driver);
diff --git a/drivers/platform/mips/Kconfig b/drivers/platform/mips/Kconfig
new file mode 100644
index 000000000..125e56901
--- /dev/null
+++ b/drivers/platform/mips/Kconfig
@@ -0,0 +1,30 @@
+#
+# MIPS Platform Specific Drivers
+#
+
+menuconfig MIPS_PLATFORM_DEVICES
+ bool "MIPS Platform Specific Device Drivers"
+ default y
+ help
+ Say Y here to get to see options for device drivers of various
+ MIPS platforms, including vendor-specific netbook/laptop/desktop
+ extension and hardware monitor drivers. This option itself does
+ not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and disabled.
+
+if MIPS_PLATFORM_DEVICES
+
+config MIPS_ACPI
+ bool
+ default y if LOONGSON_MACH3X
+
+config CPU_HWMON
+ tristate "Loongson CPU HWMon Driver"
+ depends on LOONGSON_MACH3X
+ select HWMON
+ default y
+ help
+ Loongson-3A/3B CPU Hwmon (temperature sensor) driver.
+
+endif # MIPS_PLATFORM_DEVICES
diff --git a/drivers/platform/mips/Makefile b/drivers/platform/mips/Makefile
new file mode 100644
index 000000000..43412849b
--- /dev/null
+++ b/drivers/platform/mips/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_MIPS_ACPI) += acpi_init.o
+obj-$(CONFIG_CPU_HWMON) += cpu_hwmon.o
diff --git a/drivers/platform/mips/acpi_init.c b/drivers/platform/mips/acpi_init.c
new file mode 100644
index 000000000..dbdad79ea
--- /dev/null
+++ b/drivers/platform/mips/acpi_init.c
@@ -0,0 +1,150 @@
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/export.h>
+
+#define SBX00_ACPI_IO_BASE 0x800
+#define SBX00_ACPI_IO_SIZE 0x100
+
+#define ACPI_PM_EVT_BLK (SBX00_ACPI_IO_BASE + 0x00) /* 4 bytes */
+#define ACPI_PM_CNT_BLK (SBX00_ACPI_IO_BASE + 0x04) /* 2 bytes */
+#define ACPI_PMA_CNT_BLK (SBX00_ACPI_IO_BASE + 0x0F) /* 1 byte */
+#define ACPI_PM_TMR_BLK (SBX00_ACPI_IO_BASE + 0x18) /* 4 bytes */
+#define ACPI_GPE0_BLK (SBX00_ACPI_IO_BASE + 0x10) /* 8 bytes */
+#define ACPI_END (SBX00_ACPI_IO_BASE + 0x80)
+
+#define PM_INDEX 0xCD6
+#define PM_DATA 0xCD7
+#define PM2_INDEX 0xCD0
+#define PM2_DATA 0xCD1
+
+/*
+ * SCI interrupt need acpi space, allocate here
+ */
+
+static int __init register_acpi_resource(void)
+{
+ request_region(SBX00_ACPI_IO_BASE, SBX00_ACPI_IO_SIZE, "acpi");
+ return 0;
+}
+
+static void pmio_write_index(u16 index, u8 reg, u8 value)
+{
+ outb(reg, index);
+ outb(value, index + 1);
+}
+
+static u8 pmio_read_index(u16 index, u8 reg)
+{
+ outb(reg, index);
+ return inb(index + 1);
+}
+
+void pm_iowrite(u8 reg, u8 value)
+{
+ pmio_write_index(PM_INDEX, reg, value);
+}
+EXPORT_SYMBOL(pm_iowrite);
+
+u8 pm_ioread(u8 reg)
+{
+ return pmio_read_index(PM_INDEX, reg);
+}
+EXPORT_SYMBOL(pm_ioread);
+
+void pm2_iowrite(u8 reg, u8 value)
+{
+ pmio_write_index(PM2_INDEX, reg, value);
+}
+EXPORT_SYMBOL(pm2_iowrite);
+
+u8 pm2_ioread(u8 reg)
+{
+ return pmio_read_index(PM2_INDEX, reg);
+}
+EXPORT_SYMBOL(pm2_ioread);
+
+static void acpi_hw_clear_status(void)
+{
+ u16 value;
+
+ /* PMStatus: Clear WakeStatus/PwrBtnStatus */
+ value = inw(ACPI_PM_EVT_BLK);
+ value |= (1 << 8 | 1 << 15);
+ outw(value, ACPI_PM_EVT_BLK);
+
+ /* GPEStatus: Clear all generated events */
+ outl(inl(ACPI_GPE0_BLK), ACPI_GPE0_BLK);
+}
+
+void acpi_registers_setup(void)
+{
+ u32 value;
+
+ /* PM Status Base */
+ pm_iowrite(0x20, ACPI_PM_EVT_BLK & 0xff);
+ pm_iowrite(0x21, ACPI_PM_EVT_BLK >> 8);
+
+ /* PM Control Base */
+ pm_iowrite(0x22, ACPI_PM_CNT_BLK & 0xff);
+ pm_iowrite(0x23, ACPI_PM_CNT_BLK >> 8);
+
+ /* GPM Base */
+ pm_iowrite(0x28, ACPI_GPE0_BLK & 0xff);
+ pm_iowrite(0x29, ACPI_GPE0_BLK >> 8);
+
+ /* ACPI End */
+ pm_iowrite(0x2e, ACPI_END & 0xff);
+ pm_iowrite(0x2f, ACPI_END >> 8);
+
+ /* IO Decode: When AcpiDecodeEnable set, South-Bridge uses the contents
+ * of the PM registers at index 0x20~0x2B to decode ACPI I/O address. */
+ pm_iowrite(0x0e, 1 << 3);
+
+ /* SCI_EN set */
+ outw(1, ACPI_PM_CNT_BLK);
+
+ /* Enable to generate SCI */
+ pm_iowrite(0x10, pm_ioread(0x10) | 1);
+
+ /* GPM3/GPM9 enable */
+ value = inl(ACPI_GPE0_BLK + 4);
+ outl(value | (1 << 14) | (1 << 22), ACPI_GPE0_BLK + 4);
+
+ /* Set GPM9 as input */
+ pm_iowrite(0x8d, pm_ioread(0x8d) & (~(1 << 1)));
+
+ /* Set GPM9 as non-output */
+ pm_iowrite(0x94, pm_ioread(0x94) | (1 << 3));
+
+ /* GPM3 config ACPI trigger SCIOUT */
+ pm_iowrite(0x33, pm_ioread(0x33) & (~(3 << 4)));
+
+ /* GPM9 config ACPI trigger SCIOUT */
+ pm_iowrite(0x3d, pm_ioread(0x3d) & (~(3 << 2)));
+
+ /* GPM3 config falling edge trigger */
+ pm_iowrite(0x37, pm_ioread(0x37) & (~(1 << 6)));
+
+ /* No wait for STPGNT# in ACPI Sx state */
+ pm_iowrite(0x7c, pm_ioread(0x7c) | (1 << 6));
+
+ /* Set GPM3 pull-down enable */
+ value = pm2_ioread(0xf6);
+ value |= ((1 << 7) | (1 << 3));
+ pm2_iowrite(0xf6, value);
+
+ /* Set GPM9 pull-down enable */
+ value = pm2_ioread(0xf8);
+ value |= ((1 << 5) | (1 << 1));
+ pm2_iowrite(0xf8, value);
+}
+
+int __init sbx00_acpi_init(void)
+{
+ register_acpi_resource();
+ acpi_registers_setup();
+ acpi_hw_clear_status();
+
+ return 0;
+}
diff --git a/drivers/platform/mips/cpu_hwmon.c b/drivers/platform/mips/cpu_hwmon.c
new file mode 100644
index 000000000..0f6c63e17
--- /dev/null
+++ b/drivers/platform/mips/cpu_hwmon.c
@@ -0,0 +1,207 @@
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/reboot.h>
+#include <linux/jiffies.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+
+#include <loongson.h>
+#include <boot_param.h>
+#include <loongson_hwmon.h>
+
+/*
+ * Loongson-3 series cpu has two sensors inside,
+ * each of them from 0 to 255,
+ * if more than 127, that is dangerous.
+ * here only provide sensor1 data, because it always hot than sensor0
+ */
+int loongson3_cpu_temp(int cpu)
+{
+ u32 reg;
+
+ reg = LOONGSON_CHIPTEMP(cpu);
+ if (loongson_sysconf.cputype == Loongson_3A)
+ reg = (reg >> 8) & 0xff;
+ else if (loongson_sysconf.cputype == Loongson_3B)
+ reg = ((reg >> 8) & 0xff) - 100;
+
+ return (int)reg * 1000;
+}
+
+static struct device *cpu_hwmon_dev;
+
+static ssize_t get_hwmon_name(struct device *dev,
+ struct device_attribute *attr, char *buf);
+static SENSOR_DEVICE_ATTR(name, S_IRUGO, get_hwmon_name, NULL, 0);
+
+static struct attribute *cpu_hwmon_attributes[] = {
+ &sensor_dev_attr_name.dev_attr.attr,
+ NULL
+};
+
+/* Hwmon device attribute group */
+static struct attribute_group cpu_hwmon_attribute_group = {
+ .attrs = cpu_hwmon_attributes,
+};
+
+/* Hwmon device get name */
+static ssize_t get_hwmon_name(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "cpu-hwmon\n");
+}
+
+static ssize_t get_cpu0_temp(struct device *dev,
+ struct device_attribute *attr, char *buf);
+static ssize_t get_cpu1_temp(struct device *dev,
+ struct device_attribute *attr, char *buf);
+static ssize_t cpu0_temp_label(struct device *dev,
+ struct device_attribute *attr, char *buf);
+static ssize_t cpu1_temp_label(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_cpu0_temp, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, cpu0_temp_label, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_cpu1_temp, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, cpu1_temp_label, NULL, 2);
+
+static const struct attribute *hwmon_cputemp1[] = {
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_label.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute *hwmon_cputemp2[] = {
+ &sensor_dev_attr_temp2_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_label.dev_attr.attr,
+ NULL
+};
+
+static ssize_t cpu0_temp_label(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "CPU 0 Temprature\n");
+}
+
+static ssize_t cpu1_temp_label(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "CPU 1 Temprature\n");
+}
+
+static ssize_t get_cpu0_temp(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int value = loongson3_cpu_temp(0);
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t get_cpu1_temp(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int value = loongson3_cpu_temp(1);
+ return sprintf(buf, "%d\n", value);
+}
+
+static int create_sysfs_cputemp_files(struct kobject *kobj)
+{
+ int ret;
+
+ ret = sysfs_create_files(kobj, hwmon_cputemp1);
+ if (ret)
+ goto sysfs_create_temp1_fail;
+
+ if (loongson_sysconf.nr_cpus <= loongson_sysconf.cores_per_package)
+ return 0;
+
+ ret = sysfs_create_files(kobj, hwmon_cputemp2);
+ if (ret)
+ goto sysfs_create_temp2_fail;
+
+ return 0;
+
+sysfs_create_temp2_fail:
+ sysfs_remove_files(kobj, hwmon_cputemp1);
+
+sysfs_create_temp1_fail:
+ return -1;
+}
+
+static void remove_sysfs_cputemp_files(struct kobject *kobj)
+{
+ sysfs_remove_files(&cpu_hwmon_dev->kobj, hwmon_cputemp1);
+
+ if (loongson_sysconf.nr_cpus > loongson_sysconf.cores_per_package)
+ sysfs_remove_files(&cpu_hwmon_dev->kobj, hwmon_cputemp2);
+}
+
+#define CPU_THERMAL_THRESHOLD 90000
+static struct delayed_work thermal_work;
+
+static void do_thermal_timer(struct work_struct *work)
+{
+ int value = loongson3_cpu_temp(0);
+ if (value <= CPU_THERMAL_THRESHOLD)
+ schedule_delayed_work(&thermal_work, msecs_to_jiffies(5000));
+ else
+ orderly_poweroff(true);
+}
+
+static int __init loongson_hwmon_init(void)
+{
+ int ret;
+
+ pr_info("Loongson Hwmon Enter...\n");
+
+ cpu_hwmon_dev = hwmon_device_register(NULL);
+ if (IS_ERR(cpu_hwmon_dev)) {
+ ret = -ENOMEM;
+ pr_err("hwmon_device_register fail!\n");
+ goto fail_hwmon_device_register;
+ }
+
+ ret = sysfs_create_group(&cpu_hwmon_dev->kobj,
+ &cpu_hwmon_attribute_group);
+ if (ret) {
+ pr_err("fail to create loongson hwmon!\n");
+ goto fail_sysfs_create_group_hwmon;
+ }
+
+ ret = create_sysfs_cputemp_files(&cpu_hwmon_dev->kobj);
+ if (ret) {
+ pr_err("fail to create cpu temprature interface!\n");
+ goto fail_create_sysfs_cputemp_files;
+ }
+
+ INIT_DEFERRABLE_WORK(&thermal_work, do_thermal_timer);
+ schedule_delayed_work(&thermal_work, msecs_to_jiffies(20000));
+
+ return ret;
+
+fail_create_sysfs_cputemp_files:
+ sysfs_remove_group(&cpu_hwmon_dev->kobj,
+ &cpu_hwmon_attribute_group);
+
+fail_sysfs_create_group_hwmon:
+ hwmon_device_unregister(cpu_hwmon_dev);
+
+fail_hwmon_device_register:
+ return ret;
+}
+
+static void __exit loongson_hwmon_exit(void)
+{
+ cancel_delayed_work_sync(&thermal_work);
+ remove_sysfs_cputemp_files(&cpu_hwmon_dev->kobj);
+ sysfs_remove_group(&cpu_hwmon_dev->kobj,
+ &cpu_hwmon_attribute_group);
+ hwmon_device_unregister(cpu_hwmon_dev);
+}
+
+module_init(loongson_hwmon_init);
+module_exit(loongson_hwmon_exit);
+
+MODULE_AUTHOR("Yu Xiang <xiangy@lemote.com>");
+MODULE_AUTHOR("Huacai Chen <chenhc@lemote.com>");
+MODULE_DESCRIPTION("Loongson CPU Hwmon driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/olpc/Makefile b/drivers/platform/olpc/Makefile
new file mode 100644
index 000000000..dc8b26bc7
--- /dev/null
+++ b/drivers/platform/olpc/Makefile
@@ -0,0 +1,4 @@
+#
+# OLPC XO platform-specific drivers
+#
+obj-$(CONFIG_OLPC) += olpc-ec.o
diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c
new file mode 100644
index 000000000..f9119525f
--- /dev/null
+++ b/drivers/platform/olpc/olpc-ec.c
@@ -0,0 +1,336 @@
+/*
+ * Generic driver for the OLPC Embedded Controller.
+ *
+ * Copyright (C) 2011-2012 One Laptop per Child Foundation.
+ *
+ * Licensed under the GPL v2 or later.
+ */
+#include <linux/completion.h>
+#include <linux/debugfs.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/olpc-ec.h>
+#include <asm/olpc.h>
+
+struct ec_cmd_desc {
+ u8 cmd;
+ u8 *inbuf, *outbuf;
+ size_t inlen, outlen;
+
+ int err;
+ struct completion finished;
+ struct list_head node;
+
+ void *priv;
+};
+
+struct olpc_ec_priv {
+ struct olpc_ec_driver *drv;
+ struct work_struct worker;
+ struct mutex cmd_lock;
+
+ /* Pending EC commands */
+ struct list_head cmd_q;
+ spinlock_t cmd_q_lock;
+
+ struct dentry *dbgfs_dir;
+
+ /*
+ * Running an EC command while suspending means we don't always finish
+ * the command before the machine suspends. This means that the EC
+ * is expecting the command protocol to finish, but we after a period
+ * of time (while the OS is asleep) the EC times out and restarts its
+ * idle loop. Meanwhile, the OS wakes up, thinks it's still in the
+ * middle of the command protocol, starts throwing random things at
+ * the EC... and everyone's uphappy.
+ */
+ bool suspended;
+};
+
+static struct olpc_ec_driver *ec_driver;
+static struct olpc_ec_priv *ec_priv;
+static void *ec_cb_arg;
+
+void olpc_ec_driver_register(struct olpc_ec_driver *drv, void *arg)
+{
+ ec_driver = drv;
+ ec_cb_arg = arg;
+}
+EXPORT_SYMBOL_GPL(olpc_ec_driver_register);
+
+static void olpc_ec_worker(struct work_struct *w)
+{
+ struct olpc_ec_priv *ec = container_of(w, struct olpc_ec_priv, worker);
+ struct ec_cmd_desc *desc = NULL;
+ unsigned long flags;
+
+ /* Grab the first pending command from the queue */
+ spin_lock_irqsave(&ec->cmd_q_lock, flags);
+ if (!list_empty(&ec->cmd_q)) {
+ desc = list_first_entry(&ec->cmd_q, struct ec_cmd_desc, node);
+ list_del(&desc->node);
+ }
+ spin_unlock_irqrestore(&ec->cmd_q_lock, flags);
+
+ /* Do we actually have anything to do? */
+ if (!desc)
+ return;
+
+ /* Protect the EC hw with a mutex; only run one cmd at a time */
+ mutex_lock(&ec->cmd_lock);
+ desc->err = ec_driver->ec_cmd(desc->cmd, desc->inbuf, desc->inlen,
+ desc->outbuf, desc->outlen, ec_cb_arg);
+ mutex_unlock(&ec->cmd_lock);
+
+ /* Finished, wake up olpc_ec_cmd() */
+ complete(&desc->finished);
+
+ /* Run the worker thread again in case there are more cmds pending */
+ schedule_work(&ec->worker);
+}
+
+/*
+ * Throw a cmd descripter onto the list. We now have SMP OLPC machines, so
+ * locking is pretty critical.
+ */
+static void queue_ec_descriptor(struct ec_cmd_desc *desc,
+ struct olpc_ec_priv *ec)
+{
+ unsigned long flags;
+
+ INIT_LIST_HEAD(&desc->node);
+
+ spin_lock_irqsave(&ec->cmd_q_lock, flags);
+ list_add_tail(&desc->node, &ec->cmd_q);
+ spin_unlock_irqrestore(&ec->cmd_q_lock, flags);
+
+ schedule_work(&ec->worker);
+}
+
+int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen)
+{
+ struct olpc_ec_priv *ec = ec_priv;
+ struct ec_cmd_desc desc;
+
+ /* Ensure a driver and ec hook have been registered */
+ if (WARN_ON(!ec_driver || !ec_driver->ec_cmd))
+ return -ENODEV;
+
+ if (!ec)
+ return -ENOMEM;
+
+ /* Suspending in the middle of a command hoses things really badly */
+ if (WARN_ON(ec->suspended))
+ return -EBUSY;
+
+ might_sleep();
+
+ desc.cmd = cmd;
+ desc.inbuf = inbuf;
+ desc.outbuf = outbuf;
+ desc.inlen = inlen;
+ desc.outlen = outlen;
+ desc.err = 0;
+ init_completion(&desc.finished);
+
+ queue_ec_descriptor(&desc, ec);
+
+ /* Timeouts must be handled in the platform-specific EC hook */
+ wait_for_completion(&desc.finished);
+
+ /* The worker thread dequeues the cmd; no need to do anything here */
+ return desc.err;
+}
+EXPORT_SYMBOL_GPL(olpc_ec_cmd);
+
+#ifdef CONFIG_DEBUG_FS
+
+/*
+ * debugfs support for "generic commands", to allow sending
+ * arbitrary EC commands from userspace.
+ */
+
+#define EC_MAX_CMD_ARGS (5 + 1) /* cmd byte + 5 args */
+#define EC_MAX_CMD_REPLY (8)
+
+static DEFINE_MUTEX(ec_dbgfs_lock);
+static unsigned char ec_dbgfs_resp[EC_MAX_CMD_REPLY];
+static unsigned int ec_dbgfs_resp_bytes;
+
+static ssize_t ec_dbgfs_cmd_write(struct file *file, const char __user *buf,
+ size_t size, loff_t *ppos)
+{
+ int i, m;
+ unsigned char ec_cmd[EC_MAX_CMD_ARGS];
+ unsigned int ec_cmd_int[EC_MAX_CMD_ARGS];
+ char cmdbuf[64];
+ int ec_cmd_bytes;
+
+ mutex_lock(&ec_dbgfs_lock);
+
+ size = simple_write_to_buffer(cmdbuf, sizeof(cmdbuf), ppos, buf, size);
+
+ m = sscanf(cmdbuf, "%x:%u %x %x %x %x %x", &ec_cmd_int[0],
+ &ec_dbgfs_resp_bytes, &ec_cmd_int[1], &ec_cmd_int[2],
+ &ec_cmd_int[3], &ec_cmd_int[4], &ec_cmd_int[5]);
+ if (m < 2 || ec_dbgfs_resp_bytes > EC_MAX_CMD_REPLY) {
+ /* reset to prevent overflow on read */
+ ec_dbgfs_resp_bytes = 0;
+
+ pr_debug("olpc-ec: bad ec cmd: cmd:response-count [arg1 [arg2 ...]]\n");
+ size = -EINVAL;
+ goto out;
+ }
+
+ /* convert scanf'd ints to char */
+ ec_cmd_bytes = m - 2;
+ for (i = 0; i <= ec_cmd_bytes; i++)
+ ec_cmd[i] = ec_cmd_int[i];
+
+ pr_debug("olpc-ec: debugfs cmd 0x%02x with %d args %02x %02x %02x %02x %02x, want %d returns\n",
+ ec_cmd[0], ec_cmd_bytes, ec_cmd[1], ec_cmd[2],
+ ec_cmd[3], ec_cmd[4], ec_cmd[5], ec_dbgfs_resp_bytes);
+
+ olpc_ec_cmd(ec_cmd[0], (ec_cmd_bytes == 0) ? NULL : &ec_cmd[1],
+ ec_cmd_bytes, ec_dbgfs_resp, ec_dbgfs_resp_bytes);
+
+ pr_debug("olpc-ec: response %02x %02x %02x %02x %02x %02x %02x %02x (%d bytes expected)\n",
+ ec_dbgfs_resp[0], ec_dbgfs_resp[1], ec_dbgfs_resp[2],
+ ec_dbgfs_resp[3], ec_dbgfs_resp[4], ec_dbgfs_resp[5],
+ ec_dbgfs_resp[6], ec_dbgfs_resp[7],
+ ec_dbgfs_resp_bytes);
+
+out:
+ mutex_unlock(&ec_dbgfs_lock);
+ return size;
+}
+
+static ssize_t ec_dbgfs_cmd_read(struct file *file, char __user *buf,
+ size_t size, loff_t *ppos)
+{
+ unsigned int i, r;
+ char *rp;
+ char respbuf[64];
+
+ mutex_lock(&ec_dbgfs_lock);
+ rp = respbuf;
+ rp += sprintf(rp, "%02x", ec_dbgfs_resp[0]);
+ for (i = 1; i < ec_dbgfs_resp_bytes; i++)
+ rp += sprintf(rp, ", %02x", ec_dbgfs_resp[i]);
+ mutex_unlock(&ec_dbgfs_lock);
+ rp += sprintf(rp, "\n");
+
+ r = rp - respbuf;
+ return simple_read_from_buffer(buf, size, ppos, respbuf, r);
+}
+
+static const struct file_operations ec_dbgfs_ops = {
+ .write = ec_dbgfs_cmd_write,
+ .read = ec_dbgfs_cmd_read,
+};
+
+static struct dentry *olpc_ec_setup_debugfs(void)
+{
+ struct dentry *dbgfs_dir;
+
+ dbgfs_dir = debugfs_create_dir("olpc-ec", NULL);
+ if (IS_ERR_OR_NULL(dbgfs_dir))
+ return NULL;
+
+ debugfs_create_file("cmd", 0600, dbgfs_dir, NULL, &ec_dbgfs_ops);
+
+ return dbgfs_dir;
+}
+
+#else
+
+static struct dentry *olpc_ec_setup_debugfs(void)
+{
+ return NULL;
+}
+
+#endif /* CONFIG_DEBUG_FS */
+
+static int olpc_ec_probe(struct platform_device *pdev)
+{
+ struct olpc_ec_priv *ec;
+ int err;
+
+ if (!ec_driver)
+ return -ENODEV;
+
+ ec = kzalloc(sizeof(*ec), GFP_KERNEL);
+ if (!ec)
+ return -ENOMEM;
+
+ ec->drv = ec_driver;
+ INIT_WORK(&ec->worker, olpc_ec_worker);
+ mutex_init(&ec->cmd_lock);
+
+ INIT_LIST_HEAD(&ec->cmd_q);
+ spin_lock_init(&ec->cmd_q_lock);
+
+ ec_priv = ec;
+ platform_set_drvdata(pdev, ec);
+
+ err = ec_driver->probe ? ec_driver->probe(pdev) : 0;
+ if (err) {
+ ec_priv = NULL;
+ kfree(ec);
+ } else {
+ ec->dbgfs_dir = olpc_ec_setup_debugfs();
+ }
+
+ return err;
+}
+
+static int olpc_ec_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct olpc_ec_priv *ec = platform_get_drvdata(pdev);
+ int err = 0;
+
+ if (ec_driver->suspend)
+ err = ec_driver->suspend(pdev);
+ if (!err)
+ ec->suspended = true;
+
+ return err;
+}
+
+static int olpc_ec_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct olpc_ec_priv *ec = platform_get_drvdata(pdev);
+
+ ec->suspended = false;
+ return ec_driver->resume ? ec_driver->resume(pdev) : 0;
+}
+
+static const struct dev_pm_ops olpc_ec_pm_ops = {
+ .suspend_late = olpc_ec_suspend,
+ .resume_early = olpc_ec_resume,
+};
+
+static struct platform_driver olpc_ec_plat_driver = {
+ .probe = olpc_ec_probe,
+ .driver = {
+ .name = "olpc-ec",
+ .pm = &olpc_ec_pm_ops,
+ },
+};
+
+static int __init olpc_ec_init_module(void)
+{
+ return platform_driver_register(&olpc_ec_plat_driver);
+}
+
+arch_initcall(olpc_ec_init_module);
+
+MODULE_AUTHOR("Andres Salomon <dilinger@queued.net>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
new file mode 100644
index 000000000..47c9510eb
--- /dev/null
+++ b/drivers/platform/x86/Kconfig
@@ -0,0 +1,909 @@
+#
+# X86 Platform Specific Drivers
+#
+
+menuconfig X86_PLATFORM_DEVICES
+ bool "X86 Platform Specific Device Drivers"
+ default y
+ depends on X86
+ ---help---
+ Say Y here to get to see options for device drivers for various
+ x86 platforms, including vendor-specific laptop extension drivers.
+ This option alone does not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and disabled.
+
+if X86_PLATFORM_DEVICES
+
+config ACER_WMI
+ tristate "Acer WMI Laptop Extras"
+ depends on ACPI
+ select LEDS_CLASS
+ select NEW_LEDS
+ depends on BACKLIGHT_CLASS_DEVICE
+ depends on SERIO_I8042
+ depends on INPUT
+ depends on RFKILL || RFKILL = n
+ depends on ACPI_WMI
+ select INPUT_SPARSEKMAP
+ # Acer WMI depends on ACPI_VIDEO when ACPI is enabled
+ select ACPI_VIDEO if ACPI
+ ---help---
+ This is a driver for newer Acer (and Wistron) laptops. It adds
+ wireless radio and bluetooth control, and on some laptops,
+ exposes the mail LED and LCD backlight.
+
+ If you have an ACPI-WMI compatible Acer/ Wistron laptop, say Y or M
+ here.
+
+config ACERHDF
+ tristate "Acer Aspire One temperature and fan driver"
+ depends on ACPI && THERMAL
+ select THERMAL_GOV_BANG_BANG
+ ---help---
+ This is a driver for Acer Aspire One netbooks. It allows to access
+ the temperature sensor and to control the fan.
+
+ After loading this driver the BIOS is still in control of the fan.
+ To let the kernel handle the fan, do:
+ echo -n enabled > /sys/class/thermal/thermal_zone0/mode
+
+ For more information about this driver see
+ <http://piie.net/files/acerhdf_README.txt>
+
+ If you have an Acer Aspire One netbook, say Y or M
+ here.
+
+config ALIENWARE_WMI
+ tristate "Alienware Special feature control"
+ depends on ACPI
+ depends on LEDS_CLASS
+ depends on NEW_LEDS
+ depends on ACPI_WMI
+ ---help---
+ This is a driver for controlling Alienware BIOS driven
+ features. It exposes an interface for controlling the AlienFX
+ zones on Alienware machines that don't contain a dedicated AlienFX
+ USB MCU such as the X51 and X51-R2.
+
+config ASUS_LAPTOP
+ tristate "Asus Laptop Extras"
+ depends on ACPI
+ select LEDS_CLASS
+ select NEW_LEDS
+ select BACKLIGHT_CLASS_DEVICE
+ depends on INPUT
+ depends on RFKILL || RFKILL = n
+ select INPUT_SPARSEKMAP
+ select INPUT_POLLDEV
+ ---help---
+ This is a driver for Asus laptops, Lenovo SL and the Pegatron
+ Lucid tablet. It may also support some MEDION, JVC or VICTOR
+ laptops. It makes all the extra buttons generate standard
+ ACPI events and input events, and on the Lucid the built-in
+ accelerometer appears as an input device. It also adds
+ support for video output switching, LCD backlight control,
+ Bluetooth and Wlan control, and most importantly, allows you
+ to blink those fancy LEDs.
+
+ For more information see <http://acpi4asus.sf.net>.
+
+ If you have an ACPI-compatible ASUS laptop, say Y or M here.
+
+config DELL_LAPTOP
+ tristate "Dell Laptop Extras"
+ depends on X86
+ depends on DCDBAS
+ depends on BACKLIGHT_CLASS_DEVICE
+ depends on RFKILL || RFKILL = n
+ depends on SERIO_I8042
+ select POWER_SUPPLY
+ select LEDS_CLASS
+ select NEW_LEDS
+ default n
+ ---help---
+ This driver adds support for rfkill and backlight control to Dell
+ laptops (except for some models covered by the Compal driver).
+
+config DELL_WMI
+ tristate "Dell WMI extras"
+ depends on ACPI_WMI
+ depends on INPUT
+ select INPUT_SPARSEKMAP
+ ---help---
+ Say Y here if you want to support WMI-based hotkeys on Dell laptops.
+
+ To compile this driver as a module, choose M here: the module will
+ be called dell-wmi.
+
+config DELL_WMI_AIO
+ tristate "WMI Hotkeys for Dell All-In-One series"
+ depends on ACPI_WMI
+ depends on INPUT
+ select INPUT_SPARSEKMAP
+ ---help---
+ Say Y here if you want to support WMI-based hotkeys on Dell
+ All-In-One machines.
+
+ To compile this driver as a module, choose M here: the module will
+ be called dell-wmi-aio.
+
+config DELL_SMO8800
+ tristate "Dell Latitude freefall driver (ACPI SMO88XX)"
+ depends on ACPI
+ ---help---
+ Say Y here if you want to support SMO88XX freefall devices
+ on Dell Latitude laptops.
+
+ To compile this driver as a module, choose M here: the module will
+ be called dell-smo8800.
+
+
+config FUJITSU_LAPTOP
+ tristate "Fujitsu Laptop Extras"
+ depends on ACPI
+ depends on INPUT
+ depends on BACKLIGHT_CLASS_DEVICE
+ depends on LEDS_CLASS || LEDS_CLASS=n
+ ---help---
+ This is a driver for laptops built by Fujitsu:
+
+ * P2xxx/P5xxx/S6xxx/S7xxx series Lifebooks
+ * Possibly other Fujitsu laptop models
+ * Tested with S6410 and S7020
+
+ It adds support for LCD brightness control and some hotkeys.
+
+ If you have a Fujitsu laptop, say Y or M here.
+
+config FUJITSU_LAPTOP_DEBUG
+ bool "Verbose debug mode for Fujitsu Laptop Extras"
+ depends on FUJITSU_LAPTOP
+ default n
+ ---help---
+ Enables extra debug output from the fujitsu extras driver, at the
+ expense of a slight increase in driver size.
+
+ If you are not sure, say N here.
+
+config FUJITSU_TABLET
+ tristate "Fujitsu Tablet Extras"
+ depends on ACPI
+ depends on INPUT
+ ---help---
+ This is a driver for tablets built by Fujitsu:
+
+ * Lifebook P1510/P1610/P1620/Txxxx
+ * Stylistic ST5xxx
+ * Possibly other Fujitsu tablet models
+
+ It adds support for the panel buttons, docking station detection,
+ tablet/notebook mode detection for convertible and
+ orientation detection for docked slates.
+
+ If you have a Fujitsu convertible or slate, say Y or M here.
+
+config AMILO_RFKILL
+ tristate "Fujitsu-Siemens Amilo rfkill support"
+ depends on RFKILL
+ depends on SERIO_I8042
+ ---help---
+ This is a driver for enabling wifi on some Fujitsu-Siemens Amilo
+ laptops.
+
+config TC1100_WMI
+ tristate "HP Compaq TC1100 Tablet WMI Extras"
+ depends on !X86_64
+ depends on ACPI
+ depends on ACPI_WMI
+ ---help---
+ This is a driver for the WMI extensions (wireless and bluetooth power
+ control) of the HP Compaq TC1100 tablet.
+
+config HP_ACCEL
+ tristate "HP laptop accelerometer"
+ depends on INPUT && ACPI
+ depends on SERIO_I8042
+ select SENSORS_LIS3LV02D
+ select NEW_LEDS
+ select LEDS_CLASS
+ help
+ This driver provides support for the "Mobile Data Protection System 3D"
+ or "3D DriveGuard" feature of HP laptops. On such systems the driver
+ should load automatically (via ACPI alias).
+
+ Support for a led indicating disk protection will be provided as
+ hp::hddprotect. For more information on the feature, refer to
+ Documentation/misc-devices/lis3lv02d.
+
+ To compile this driver as a module, choose M here: the module will
+ be called hp_accel.
+
+config HP_WIRELESS
+ tristate "HP wireless button"
+ depends on ACPI
+ depends on INPUT
+ help
+ This driver provides supports for new HP wireless button for Windows 8.
+ On such systems the driver should load automatically (via ACPI alias).
+
+ To compile this driver as a module, choose M here: the module will
+ be called hp-wireless.
+
+config HP_WMI
+ tristate "HP WMI extras"
+ depends on ACPI_WMI
+ depends on INPUT
+ depends on RFKILL || RFKILL = n
+ select INPUT_SPARSEKMAP
+ help
+ Say Y here if you want to support WMI-based hotkeys on HP laptops and
+ to read data from WMI such as docking or ambient light sensor state.
+
+ To compile this driver as a module, choose M here: the module will
+ be called hp-wmi.
+
+config MSI_LAPTOP
+ tristate "MSI Laptop Extras"
+ depends on ACPI
+ depends on BACKLIGHT_CLASS_DEVICE
+ depends on RFKILL
+ depends on INPUT && SERIO_I8042
+ select INPUT_SPARSEKMAP
+ ---help---
+ This is a driver for laptops built by MSI (MICRO-STAR
+ INTERNATIONAL):
+
+ MSI MegaBook S270 (MS-1013)
+ Cytron/TCM/Medion/Tchibo MD96100/SAM2000
+
+ It adds support for Bluetooth, WLAN and LCD brightness control.
+
+ More information about this driver is available at
+ <http://0pointer.de/lennart/tchibo.html>.
+
+ If you have an MSI S270 laptop, say Y or M here.
+
+config PANASONIC_LAPTOP
+ tristate "Panasonic Laptop Extras"
+ depends on INPUT && ACPI
+ depends on BACKLIGHT_CLASS_DEVICE
+ select INPUT_SPARSEKMAP
+ ---help---
+ This driver adds support for access to backlight control and hotkeys
+ on Panasonic Let's Note laptops.
+
+ If you have a Panasonic Let's note laptop (such as the R1(N variant),
+ R2, R3, R5, T2, W2 and Y2 series), say Y.
+
+config COMPAL_LAPTOP
+ tristate "Compal (and others) Laptop Extras"
+ depends on ACPI
+ depends on BACKLIGHT_CLASS_DEVICE
+ depends on RFKILL
+ depends on HWMON
+ depends on POWER_SUPPLY
+ ---help---
+ This is a driver for laptops built by Compal, and some models by
+ other brands (e.g. Dell, Toshiba).
+
+ It adds support for rfkill, Bluetooth, WLAN and LCD brightness
+ control.
+
+ For a (possibly incomplete) list of supported laptops, please refer
+ to: Documentation/platform/x86-laptop-drivers.txt
+
+config SONY_LAPTOP
+ tristate "Sony Laptop Extras"
+ depends on ACPI
+ select BACKLIGHT_CLASS_DEVICE
+ depends on INPUT
+ depends on RFKILL
+ ---help---
+ This mini-driver drives the SNC and SPIC devices present in the ACPI
+ BIOS of the Sony Vaio laptops.
+
+ It gives access to some extra laptop functionalities like Bluetooth,
+ screen brightness control, Fn keys and allows powering on/off some
+ devices.
+
+ Read <file:Documentation/laptops/sony-laptop.txt> for more information.
+
+config SONYPI_COMPAT
+ bool "Sonypi compatibility"
+ depends on SONY_LAPTOP
+ ---help---
+ Build the sonypi driver compatibility code into the sony-laptop driver.
+
+config IDEAPAD_LAPTOP
+ tristate "Lenovo IdeaPad Laptop Extras"
+ depends on ACPI
+ depends on RFKILL && INPUT
+ depends on SERIO_I8042
+ depends on BACKLIGHT_CLASS_DEVICE
+ select INPUT_SPARSEKMAP
+ help
+ This is a driver for Lenovo IdeaPad netbooks contains drivers for
+ rfkill switch, hotkey, fan control and backlight control.
+
+config THINKPAD_ACPI
+ tristate "ThinkPad ACPI Laptop Extras"
+ depends on ACPI
+ depends on INPUT
+ depends on RFKILL || RFKILL = n
+ select BACKLIGHT_LCD_SUPPORT
+ select BACKLIGHT_CLASS_DEVICE
+ select HWMON
+ select NVRAM
+ select NEW_LEDS
+ select LEDS_CLASS
+ ---help---
+ This is a driver for the IBM and Lenovo ThinkPad laptops. It adds
+ support for Fn-Fx key combinations, Bluetooth control, video
+ output switching, ThinkLight control, UltraBay eject and more.
+ For more information about this driver see
+ <file:Documentation/laptops/thinkpad-acpi.txt> and
+ <http://ibm-acpi.sf.net/> .
+
+ This driver was formerly known as ibm-acpi.
+
+ Extra functionality will be available if the rfkill (CONFIG_RFKILL)
+ and/or ALSA (CONFIG_SND) subsystems are available in the kernel.
+ Note that if you want ThinkPad-ACPI to be built-in instead of
+ modular, ALSA and rfkill will also have to be built-in.
+
+ If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
+
+config THINKPAD_ACPI_ALSA_SUPPORT
+ bool "Console audio control ALSA interface"
+ depends on THINKPAD_ACPI
+ depends on SND
+ depends on SND = y || THINKPAD_ACPI = SND
+ default y
+ ---help---
+ Enables monitoring of the built-in console audio output control
+ (headphone and speakers), which is operated by the mute and (in
+ some ThinkPad models) volume hotkeys.
+
+ If this option is enabled, ThinkPad-ACPI will export an ALSA card
+ with a single read-only mixer control, which should be used for
+ on-screen-display feedback purposes by the Desktop Environment.
+
+ Optionally, the driver will also allow software control (the
+ ALSA mixer will be made read-write). Please refer to the driver
+ documentation for details.
+
+ All IBM models have both volume and mute control. Newer Lenovo
+ models only have mute control (the volume hotkeys are just normal
+ keys and volume control is done through the main HDA mixer).
+
+config THINKPAD_ACPI_DEBUGFACILITIES
+ bool "Maintainer debug facilities"
+ depends on THINKPAD_ACPI
+ default n
+ ---help---
+ Enables extra stuff in the thinkpad-acpi which is completely useless
+ for normal use. Read the driver source to find out what it does.
+
+ Say N here, unless you were told by a kernel maintainer to do
+ otherwise.
+
+config THINKPAD_ACPI_DEBUG
+ bool "Verbose debug mode"
+ depends on THINKPAD_ACPI
+ default n
+ ---help---
+ Enables extra debugging information, at the expense of a slightly
+ increase in driver size.
+
+ If you are not sure, say N here.
+
+config THINKPAD_ACPI_UNSAFE_LEDS
+ bool "Allow control of important LEDs (unsafe)"
+ depends on THINKPAD_ACPI
+ default n
+ ---help---
+ Overriding LED state on ThinkPads can mask important
+ firmware alerts (like critical battery condition), or misled
+ the user into damaging the hardware (undocking or ejecting
+ the bay while buses are still active), etc.
+
+ LED control on the ThinkPad is write-only (with very few
+ exceptions on very ancient models), which makes it
+ impossible to know beforehand if important information will
+ be lost when one changes LED state.
+
+ Users that know what they are doing can enable this option
+ and the driver will allow control of every LED, including
+ the ones on the dock stations.
+
+ Never enable this option on a distribution kernel.
+
+ Say N here, unless you are building a kernel for your own
+ use, and need to control the important firmware LEDs.
+
+config THINKPAD_ACPI_VIDEO
+ bool "Video output control support"
+ depends on THINKPAD_ACPI
+ default y
+ ---help---
+ Allows the thinkpad_acpi driver to provide an interface to control
+ the various video output ports.
+
+ This feature often won't work well, depending on ThinkPad model,
+ display state, video output devices in use, whether there is a X
+ server running, phase of the moon, and the current mood of
+ Schroedinger's cat. If you can use X.org's RandR to control
+ your ThinkPad's video output ports instead of this feature,
+ don't think twice: do it and say N here to save memory and avoid
+ bad interactions with X.org.
+
+ NOTE: access to this feature is limited to processes with the
+ CAP_SYS_ADMIN capability, to avoid local DoS issues in platforms
+ where it interacts badly with X.org.
+
+ If you are not sure, say Y here but do try to check if you could
+ be using X.org RandR instead.
+
+config THINKPAD_ACPI_HOTKEY_POLL
+ bool "Support NVRAM polling for hot keys"
+ depends on THINKPAD_ACPI
+ default y
+ ---help---
+ Some thinkpad models benefit from NVRAM polling to detect a few of
+ the hot key press events. If you know your ThinkPad model does not
+ need to do NVRAM polling to support any of the hot keys you use,
+ unselecting this option will save about 1kB of memory.
+
+ ThinkPads T40 and newer, R52 and newer, and X31 and newer are
+ unlikely to need NVRAM polling in their latest BIOS versions.
+
+ NVRAM polling can detect at most the following keys: ThinkPad/Access
+ IBM, Zoom, Switch Display (fn+F7), ThinkLight, Volume up/down/mute,
+ Brightness up/down, Display Expand (fn+F8), Hibernate (fn+F12).
+
+ If you are not sure, say Y here. The driver enables polling only if
+ it is strictly necessary to do so.
+
+config THINKPAD_EC
+ tristate
+ depends on X86
+ ---help---
+ This is a low-level driver for accessing the ThinkPad H8S embedded
+ controller over the LPC bus (not to be confused with the ACPI Embedded
+ Controller interface).
+
+config TP_SMAPI
+ tristate "ThinkPad SMAPI Support"
+ depends on X86
+ select THINKPAD_EC
+ default n
+ help
+ This adds SMAPI support on Lenovo/IBM ThinkPads, for features such
+ as battery charging control. For more information about this driver
+ see <http://www.thinkwiki.org/wiki/tp_smapi>.
+
+ If you have a Lenovo/IBM ThinkPad laptop, say Y or M here.
+
+config SENSORS_HDAPS
+ tristate "Thinkpad Hard Drive Active Protection System (hdaps)"
+ depends on INPUT && X86
+ select THINKPAD_EC
+ select INPUT_POLLDEV
+ default n
+ help
+ This driver provides support for the IBM Hard Drive Active Protection
+ System (hdaps), which provides an accelerometer and other misc. data.
+ ThinkPads starting with the R50, T41, and X40 are supported. The
+ accelerometer data is readable via sysfs.
+
+ This driver also provides an absolute input class device, allowing
+ the laptop to act as a pinball machine-esque joystick.
+
+ If your ThinkPad is not recognized by the driver, please update to latest
+ BIOS. This is especially the case for some R52 ThinkPads.
+
+ Say Y here if you have an applicable laptop and want to experience
+ the awesome power of hdaps.
+
+config INTEL_MENLOW
+ tristate "Thermal Management driver for Intel menlow platform"
+ depends on ACPI_THERMAL
+ select THERMAL
+ ---help---
+ ACPI thermal management enhancement driver on
+ Intel Menlow platform.
+
+ If unsure, say N.
+
+config EEEPC_LAPTOP
+ tristate "Eee PC Hotkey Driver"
+ depends on ACPI
+ depends on INPUT
+ depends on RFKILL || RFKILL = n
+ depends on HOTPLUG_PCI
+ select BACKLIGHT_CLASS_DEVICE
+ select HWMON
+ select LEDS_CLASS
+ select NEW_LEDS
+ select INPUT_SPARSEKMAP
+ ---help---
+ This driver supports the Fn-Fx keys on Eee PC laptops.
+
+ It also gives access to some extra laptop functionalities like
+ Bluetooth, backlight and allows powering on/off some other
+ devices.
+
+ If you have an Eee PC laptop, say Y or M here. If this driver
+ doesn't work on your Eee PC, try eeepc-wmi instead.
+
+config ASUS_WMI
+ tristate "ASUS WMI Driver"
+ depends on ACPI_WMI
+ depends on INPUT
+ depends on HWMON
+ depends on BACKLIGHT_CLASS_DEVICE
+ depends on RFKILL || RFKILL = n
+ depends on HOTPLUG_PCI
+ depends on ACPI_VIDEO || ACPI_VIDEO = n
+ select INPUT_SPARSEKMAP
+ select LEDS_CLASS
+ select NEW_LEDS
+ ---help---
+ Say Y here if you have a WMI aware Asus laptop (like Eee PCs or new
+ Asus Notebooks).
+
+ To compile this driver as a module, choose M here: the module will
+ be called asus-wmi.
+
+config ASUS_NB_WMI
+ tristate "Asus Notebook WMI Driver"
+ depends on ASUS_WMI
+ ---help---
+ This is a driver for newer Asus notebooks. It adds extra features
+ like wireless radio and bluetooth control, leds, hotkeys, backlight...
+
+ For more information, see
+ <file:Documentation/ABI/testing/sysfs-platform-asus-wmi>
+
+ If you have an ACPI-WMI compatible Asus Notebook, say Y or M
+ here.
+
+config EEEPC_WMI
+ tristate "Eee PC WMI Driver"
+ depends on ASUS_WMI
+ ---help---
+ This is a driver for newer Eee PC laptops. It adds extra features
+ like wireless radio and bluetooth control, leds, hotkeys, backlight...
+
+ For more information, see
+ <file:Documentation/ABI/testing/sysfs-platform-asus-wmi>
+
+ If you have an ACPI-WMI compatible Eee PC laptop (>= 1000), say Y or M
+ here.
+
+config ACPI_WMI
+ tristate "WMI"
+ depends on ACPI
+ help
+ This driver adds support for the ACPI-WMI (Windows Management
+ Instrumentation) mapper device (PNP0C14) found on some systems.
+
+ ACPI-WMI is a proprietary extension to ACPI to expose parts of the
+ ACPI firmware to userspace - this is done through various vendor
+ defined methods and data blocks in a PNP0C14 device, which are then
+ made available for userspace to call.
+
+ The implementation of this in Linux currently only exposes this to
+ other kernel space drivers.
+
+ This driver is a required dependency to build the firmware specific
+ drivers needed on many machines, including Acer and HP laptops.
+
+ It is safe to enable this driver even if your DSDT doesn't define
+ any ACPI-WMI devices.
+
+config MSI_WMI
+ tristate "MSI WMI extras"
+ depends on ACPI_WMI
+ depends on INPUT
+ depends on BACKLIGHT_CLASS_DEVICE
+ select INPUT_SPARSEKMAP
+ help
+ Say Y here if you want to support WMI-based hotkeys on MSI laptops.
+
+ To compile this driver as a module, choose M here: the module will
+ be called msi-wmi.
+
+config TOPSTAR_LAPTOP
+ tristate "Topstar Laptop Extras"
+ depends on ACPI
+ depends on INPUT
+ select INPUT_SPARSEKMAP
+ ---help---
+ This driver adds support for hotkeys found on Topstar laptops.
+
+ If you have a Topstar laptop, say Y or M here.
+
+config ACPI_TOSHIBA
+ tristate "Toshiba Laptop Extras"
+ depends on ACPI
+ depends on ACPI_WMI
+ select LEDS_CLASS
+ select NEW_LEDS
+ depends on BACKLIGHT_CLASS_DEVICE
+ depends on INPUT
+ depends on RFKILL || RFKILL = n
+ depends on SERIO_I8042 || SERIO_I8042 = n
+ depends on ACPI_VIDEO || ACPI_VIDEO = n
+ select INPUT_POLLDEV
+ select INPUT_SPARSEKMAP
+ ---help---
+ This driver adds support for access to certain system settings
+ on "legacy free" Toshiba laptops. These laptops can be recognized by
+ their lack of a BIOS setup menu and APM support.
+
+ On these machines, all system configuration is handled through the
+ ACPI. This driver is required for access to controls not covered
+ by the general ACPI drivers, such as LCD brightness, video output,
+ etc.
+
+ This driver differs from the non-ACPI Toshiba laptop driver (located
+ under "Processor type and features") in several aspects.
+ Configuration is accessed by reading and writing text files in the
+ /proc tree instead of by program interface to /dev. Furthermore, no
+ power management functions are exposed, as those are handled by the
+ general ACPI drivers.
+
+ More information about this driver is available at
+ <http://memebeam.org/toys/ToshibaAcpiDriver>.
+
+ If you have a legacy free Toshiba laptop (such as the Libretto L1
+ series), say Y.
+
+config TOSHIBA_BT_RFKILL
+ tristate "Toshiba Bluetooth RFKill switch support"
+ depends on ACPI
+ ---help---
+ This driver adds support for Bluetooth events for the RFKill
+ switch on modern Toshiba laptops with full ACPI support and
+ an RFKill switch.
+
+ This driver handles RFKill events for the TOS6205 Bluetooth,
+ and re-enables it when the switch is set back to the 'on'
+ position.
+
+ If you have a modern Toshiba laptop with a Bluetooth and an
+ RFKill switch (such as the Portege R500), say Y.
+
+config TOSHIBA_HAPS
+ tristate "Toshiba HDD Active Protection Sensor"
+ depends on ACPI
+ ---help---
+ This driver adds support for the built-in accelerometer
+ found on recent Toshiba laptops equiped with HID TOS620A
+ device.
+
+ This driver receives ACPI notify events 0x80 when the sensor
+ detects a sudden move or a harsh vibration, as well as an
+ ACPI notify event 0x81 whenever the movement or vibration has
+ been stabilized.
+
+ Also provides sysfs entries to get/set the desired protection
+ level and reseting the HDD protection interface.
+
+ If you have a recent Toshiba laptop with a built-in accelerometer
+ device, say Y.
+
+config ACPI_CMPC
+ tristate "CMPC Laptop Extras"
+ depends on X86 && ACPI
+ depends on RFKILL || RFKILL=n
+ select INPUT
+ select BACKLIGHT_CLASS_DEVICE
+ default n
+ help
+ Support for Intel Classmate PC ACPI devices, including some
+ keys as input device, backlight device, tablet and accelerometer
+ devices.
+
+config INTEL_SCU_IPC
+ bool "Intel SCU IPC Support"
+ depends on X86_INTEL_MID
+ default y
+ ---help---
+ IPC is used to bridge the communications between kernel and SCU on
+ some embedded Intel x86 platforms. This is not needed for PC-type
+ machines.
+
+config INTEL_SCU_IPC_UTIL
+ tristate "Intel SCU IPC utility driver"
+ depends on INTEL_SCU_IPC
+ default y
+ ---help---
+ The IPC Util driver provides an interface with the SCU enabling
+ low level access for debug work and updating the firmware. Say
+ N unless you will be doing this on an Intel MID platform.
+
+config GPIO_INTEL_PMIC
+ bool "Intel PMIC GPIO support"
+ depends on INTEL_SCU_IPC && GPIOLIB
+ ---help---
+ Say Y here to support GPIO via the SCU IPC interface
+ on Intel MID platforms.
+
+config INTEL_MID_POWER_BUTTON
+ tristate "power button driver for Intel MID platforms"
+ depends on INTEL_SCU_IPC && INPUT
+ help
+ This driver handles the power button on the Intel MID platforms.
+
+ If unsure, say N.
+
+config INTEL_MFLD_THERMAL
+ tristate "Thermal driver for Intel Medfield platform"
+ depends on MFD_INTEL_MSIC && THERMAL
+ help
+ Say Y here to enable thermal driver support for the Intel Medfield
+ platform.
+
+config INTEL_IPS
+ tristate "Intel Intelligent Power Sharing"
+ depends on ACPI
+ ---help---
+ Intel Calpella platforms support dynamic power sharing between the
+ CPU and GPU, maximizing performance in a given TDP. This driver,
+ along with the CPU frequency and i915 drivers, provides that
+ functionality. If in doubt, say Y here; it will only load on
+ supported platforms.
+
+config INTEL_IMR
+ bool "Intel Isolated Memory Region support"
+ default n
+ depends on X86_INTEL_QUARK && IOSF_MBI
+ ---help---
+ This option provides a means to manipulate Isolated Memory Regions.
+ IMRs are a set of registers that define read and write access masks
+ to prohibit certain system agents from accessing memory with 1 KiB
+ granularity.
+
+ IMRs make it possible to control read/write access to an address
+ by hardware agents inside the SoC. Read and write masks can be
+ defined for:
+ - eSRAM flush
+ - Dirty CPU snoop (write only)
+ - RMU access
+ - PCI Virtual Channel 0/Virtual Channel 1
+ - SMM mode
+ - Non SMM mode
+
+ Quark contains a set of eight IMR registers and makes use of those
+ registers during its bootup process.
+
+ If you are running on a Galileo/Quark say Y here.
+
+config IBM_RTL
+ tristate "Device driver to enable PRTL support"
+ depends on X86 && PCI
+ ---help---
+ Enable support for IBM Premium Real Time Mode (PRTM).
+ This module will allow you the enter and exit PRTM in the BIOS via
+ sysfs on platforms that support this feature. System in PRTM will
+ not receive CPU-generated SMIs for recoverable errors. Use of this
+ feature without proper support may void your hardware warranty.
+
+ If the proper BIOS support is found the driver will load and create
+ /sys/devices/system/ibm_rtl/. The "state" variable will indicate
+ whether or not the BIOS is in PRTM.
+ state = 0 (BIOS SMIs on)
+ state = 1 (BIOS SMIs off)
+
+config XO1_RFKILL
+ tristate "OLPC XO-1 software RF kill switch"
+ depends on OLPC || COMPILE_TEST
+ depends on RFKILL
+ ---help---
+ Support for enabling/disabling the WLAN interface on the OLPC XO-1
+ laptop.
+
+config XO15_EBOOK
+ tristate "OLPC XO-1.5 ebook switch"
+ depends on OLPC || COMPILE_TEST
+ depends on ACPI && INPUT
+ ---help---
+ Support for the ebook switch on the OLPC XO-1.5 laptop.
+
+ This switch is triggered as the screen is rotated and folded down to
+ convert the device into ebook form.
+
+config SAMSUNG_LAPTOP
+ tristate "Samsung Laptop driver"
+ depends on X86
+ depends on RFKILL || RFKILL = n
+ depends on ACPI_VIDEO || ACPI_VIDEO = n
+ depends on BACKLIGHT_CLASS_DEVICE
+ select LEDS_CLASS
+ select NEW_LEDS
+ ---help---
+ This module implements a driver for a wide range of different
+ Samsung laptops. It offers control over the different
+ function keys, wireless LED, LCD backlight level.
+
+ It may also provide some sysfs files described in
+ <file:Documentation/ABI/testing/sysfs-platform-samsung-laptop>
+
+ To compile this driver as a module, choose M here: the module
+ will be called samsung-laptop.
+
+config MXM_WMI
+ tristate "WMI support for MXM Laptop Graphics"
+ depends on ACPI_WMI
+ ---help---
+ MXM is a standard for laptop graphics cards, the WMI interface
+ is required for switchable nvidia graphics machines
+
+config INTEL_OAKTRAIL
+ tristate "Intel Oaktrail Platform Extras"
+ depends on ACPI
+ depends on RFKILL && BACKLIGHT_CLASS_DEVICE && ACPI
+ ---help---
+ Intel Oaktrail platform need this driver to provide interfaces to
+ enable/disable the Camera, WiFi, BT etc. devices. If in doubt, say Y
+ here; it will only load on supported platforms.
+
+config SAMSUNG_Q10
+ tristate "Samsung Q10 Extras"
+ depends on ACPI
+ select BACKLIGHT_CLASS_DEVICE
+ ---help---
+ This driver provides support for backlight control on Samsung Q10
+ and related laptops, including Dell Latitude X200.
+
+config APPLE_GMUX
+ tristate "Apple Gmux Driver"
+ depends on ACPI
+ depends on PNP
+ depends on BACKLIGHT_CLASS_DEVICE
+ depends on BACKLIGHT_APPLE=n || BACKLIGHT_APPLE
+ depends on ACPI_VIDEO=n || ACPI_VIDEO
+ ---help---
+ This driver provides support for the gmux device found on many
+ Apple laptops, which controls the display mux for the hybrid
+ graphics as well as the backlight. Currently only backlight
+ control is supported by the driver.
+
+config INTEL_RST
+ tristate "Intel Rapid Start Technology Driver"
+ depends on ACPI
+ ---help---
+ This driver provides support for modifying paramaters on systems
+ equipped with Intel's Rapid Start Technology. When put in an ACPI
+ sleep state, these devices will wake after either a configured
+ timeout or when the system battery reaches a critical state,
+ automatically copying memory contents to disk. On resume, the
+ firmware will copy the memory contents back to RAM and resume the OS
+ as usual.
+
+config INTEL_SMARTCONNECT
+ tristate "Intel Smart Connect disabling driver"
+ depends on ACPI
+ ---help---
+ Intel Smart Connect is a technology intended to permit devices to
+ update state by resuming for a short period of time at regular
+ intervals. If a user enables this functionality under Windows and
+ then reboots into Linux, the system may remain configured to resume
+ on suspend. In the absence of any userspace to support it, the system
+ will then remain awake until something triggers another suspend.
+
+ This driver checks to determine whether the device has Intel Smart
+ Connect enabled, and if so disables it.
+
+config PVPANIC
+ tristate "pvpanic device support"
+ depends on ACPI
+ ---help---
+ This driver provides support for the pvpanic device. pvpanic is
+ a paravirtualized device provided by QEMU; it lets a virtual machine
+ (guest) communicate panic events to the host.
+
+endif # X86_PLATFORM_DEVICES
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
new file mode 100644
index 000000000..00f156aed
--- /dev/null
+++ b/drivers/platform/x86/Makefile
@@ -0,0 +1,62 @@
+#
+# Makefile for linux/drivers/platform/x86
+# x86 Platform-Specific Drivers
+#
+obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o
+obj-$(CONFIG_ASUS_WMI) += asus-wmi.o
+obj-$(CONFIG_ASUS_NB_WMI) += asus-nb-wmi.o
+obj-$(CONFIG_EEEPC_LAPTOP) += eeepc-laptop.o
+obj-$(CONFIG_EEEPC_WMI) += eeepc-wmi.o
+obj-$(CONFIG_MSI_LAPTOP) += msi-laptop.o
+obj-$(CONFIG_ACPI_CMPC) += classmate-laptop.o
+obj-$(CONFIG_COMPAL_LAPTOP) += compal-laptop.o
+obj-$(CONFIG_DELL_LAPTOP) += dell-laptop.o
+obj-$(CONFIG_DELL_WMI) += dell-wmi.o
+obj-$(CONFIG_DELL_WMI_AIO) += dell-wmi-aio.o
+obj-$(CONFIG_DELL_SMO8800) += dell-smo8800.o
+obj-$(CONFIG_ACER_WMI) += acer-wmi.o
+obj-$(CONFIG_ACERHDF) += acerhdf.o
+obj-$(CONFIG_HP_ACCEL) += hp_accel.o
+obj-$(CONFIG_HP_WIRELESS) += hp-wireless.o
+obj-$(CONFIG_HP_WMI) += hp-wmi.o
+obj-$(CONFIG_AMILO_RFKILL) += amilo-rfkill.o
+obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o
+obj-$(CONFIG_SONY_LAPTOP) += sony-laptop.o
+obj-$(CONFIG_IDEAPAD_LAPTOP) += ideapad-laptop.o
+obj-$(CONFIG_THINKPAD_ACPI) += thinkpad_acpi.o
+obj-$(CONFIG_THINKPAD_EC) += thinkpad_ec.o
+obj-$(CONFIG_TP_SMAPI) += tp_smapi.o
+obj-$(CONFIG_SENSORS_HDAPS) += hdaps.o
+obj-$(CONFIG_FUJITSU_LAPTOP) += fujitsu-laptop.o
+obj-$(CONFIG_FUJITSU_TABLET) += fujitsu-tablet.o
+obj-$(CONFIG_PANASONIC_LAPTOP) += panasonic-laptop.o
+obj-$(CONFIG_INTEL_MENLOW) += intel_menlow.o
+obj-$(CONFIG_ACPI_WMI) += wmi.o
+obj-$(CONFIG_MSI_WMI) += msi-wmi.o
+obj-$(CONFIG_TOPSTAR_LAPTOP) += topstar-laptop.o
+
+# toshiba_acpi must link after wmi to ensure that wmi devices are found
+# before toshiba_acpi initializes
+obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o
+
+obj-$(CONFIG_TOSHIBA_BT_RFKILL) += toshiba_bluetooth.o
+obj-$(CONFIG_TOSHIBA_HAPS) += toshiba_haps.o
+obj-$(CONFIG_INTEL_SCU_IPC) += intel_scu_ipc.o
+obj-$(CONFIG_INTEL_SCU_IPC_UTIL) += intel_scu_ipcutil.o
+obj-$(CONFIG_INTEL_MFLD_THERMAL) += intel_mid_thermal.o
+obj-$(CONFIG_INTEL_IPS) += intel_ips.o
+obj-$(CONFIG_GPIO_INTEL_PMIC) += intel_pmic_gpio.o
+obj-$(CONFIG_XO1_RFKILL) += xo1-rfkill.o
+obj-$(CONFIG_XO15_EBOOK) += xo15-ebook.o
+obj-$(CONFIG_IBM_RTL) += ibm_rtl.o
+obj-$(CONFIG_SAMSUNG_LAPTOP) += samsung-laptop.o
+obj-$(CONFIG_MXM_WMI) += mxm-wmi.o
+obj-$(CONFIG_INTEL_MID_POWER_BUTTON) += intel_mid_powerbtn.o
+obj-$(CONFIG_INTEL_OAKTRAIL) += intel_oaktrail.o
+obj-$(CONFIG_SAMSUNG_Q10) += samsung-q10.o
+obj-$(CONFIG_APPLE_GMUX) += apple-gmux.o
+obj-$(CONFIG_INTEL_RST) += intel-rst.o
+obj-$(CONFIG_INTEL_SMARTCONNECT) += intel-smartconnect.o
+
+obj-$(CONFIG_PVPANIC) += pvpanic.o
+obj-$(CONFIG_ALIENWARE_WMI) += alienware-wmi.o
diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
new file mode 100644
index 000000000..3ac29a1e8
--- /dev/null
+++ b/drivers/platform/x86/acer-wmi.c
@@ -0,0 +1,2347 @@
+/*
+ * Acer WMI Laptop Extras
+ *
+ * Copyright (C) 2007-2009 Carlos Corbacho <carlos@strangeworlds.co.uk>
+ *
+ * Based on acer_acpi:
+ * Copyright (C) 2005-2007 E.M. Smith
+ * Copyright (C) 2007-2008 Carlos Corbacho <cathectic@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/dmi.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+#include <linux/leds.h>
+#include <linux/platform_device.h>
+#include <linux/acpi.h>
+#include <linux/i8042.h>
+#include <linux/rfkill.h>
+#include <linux/workqueue.h>
+#include <linux/debugfs.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <acpi/video.h>
+
+MODULE_AUTHOR("Carlos Corbacho");
+MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
+MODULE_LICENSE("GPL");
+
+/*
+ * Magic Number
+ * Meaning is unknown - this number is required for writing to ACPI for AMW0
+ * (it's also used in acerhk when directly accessing the BIOS)
+ */
+#define ACER_AMW0_WRITE 0x9610
+
+/*
+ * Bit masks for the AMW0 interface
+ */
+#define ACER_AMW0_WIRELESS_MASK 0x35
+#define ACER_AMW0_BLUETOOTH_MASK 0x34
+#define ACER_AMW0_MAILLED_MASK 0x31
+
+/*
+ * Method IDs for WMID interface
+ */
+#define ACER_WMID_GET_WIRELESS_METHODID 1
+#define ACER_WMID_GET_BLUETOOTH_METHODID 2
+#define ACER_WMID_GET_BRIGHTNESS_METHODID 3
+#define ACER_WMID_SET_WIRELESS_METHODID 4
+#define ACER_WMID_SET_BLUETOOTH_METHODID 5
+#define ACER_WMID_SET_BRIGHTNESS_METHODID 6
+#define ACER_WMID_GET_THREEG_METHODID 10
+#define ACER_WMID_SET_THREEG_METHODID 11
+
+/*
+ * Acer ACPI method GUIDs
+ */
+#define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
+#define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
+#define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
+#define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A"
+#define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
+
+/*
+ * Acer ACPI event GUIDs
+ */
+#define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
+
+MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
+MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
+MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
+
+enum acer_wmi_event_ids {
+ WMID_HOTKEY_EVENT = 0x1,
+ WMID_ACCEL_EVENT = 0x5,
+};
+
+static const struct key_entry acer_wmi_keymap[] __initconst = {
+ {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
+ {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */
+ {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */
+ {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
+ {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
+ {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
+ {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
+ {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
+ {KE_KEY, 0x29, {KEY_PROG3} }, /* P_Key for TM8372 */
+ {KE_IGNORE, 0x41, {KEY_MUTE} },
+ {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
+ {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
+ {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
+ {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
+ {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
+ {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
+ {KE_IGNORE, 0x45, {KEY_STOP} },
+ {KE_IGNORE, 0x50, {KEY_STOP} },
+ {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
+ {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
+ {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
+ {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
+ {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
+ {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
+ {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
+ {KE_IGNORE, 0x81, {KEY_SLEEP} },
+ {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
+ {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
+ {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
+ {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
+ {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
+ {KE_END, 0}
+};
+
+static struct input_dev *acer_wmi_input_dev;
+static struct input_dev *acer_wmi_accel_dev;
+
+struct event_return_value {
+ u8 function;
+ u8 key_num;
+ u16 device_state;
+ u32 reserved;
+} __attribute__((packed));
+
+/*
+ * GUID3 Get Device Status device flags
+ */
+#define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
+#define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
+#define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
+#define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
+#define ACER_WMID3_GDS_TOUCHPAD (1<<1) /* Touchpad */
+
+struct lm_input_params {
+ u8 function_num; /* Function Number */
+ u16 commun_devices; /* Communication type devices default status */
+ u16 devices; /* Other type devices default status */
+ u8 lm_status; /* Launch Manager Status */
+ u16 reserved;
+} __attribute__((packed));
+
+struct lm_return_value {
+ u8 error_code; /* Error Code */
+ u8 ec_return_value; /* EC Return Value */
+ u16 reserved;
+} __attribute__((packed));
+
+struct wmid3_gds_set_input_param { /* Set Device Status input parameter */
+ u8 function_num; /* Function Number */
+ u8 hotkey_number; /* Hotkey Number */
+ u16 devices; /* Set Device */
+ u8 volume_value; /* Volume Value */
+} __attribute__((packed));
+
+struct wmid3_gds_get_input_param { /* Get Device Status input parameter */
+ u8 function_num; /* Function Number */
+ u8 hotkey_number; /* Hotkey Number */
+ u16 devices; /* Get Device */
+} __attribute__((packed));
+
+struct wmid3_gds_return_value { /* Get Device Status return value*/
+ u8 error_code; /* Error Code */
+ u8 ec_return_value; /* EC Return Value */
+ u16 devices; /* Current Device Status */
+ u32 reserved;
+} __attribute__((packed));
+
+struct hotkey_function_type_aa {
+ u8 type;
+ u8 length;
+ u16 handle;
+ u16 commun_func_bitmap;
+ u16 application_func_bitmap;
+ u16 media_func_bitmap;
+ u16 display_func_bitmap;
+ u16 others_func_bitmap;
+ u8 commun_fn_key_number;
+} __attribute__((packed));
+
+/*
+ * Interface capability flags
+ */
+#define ACER_CAP_MAILLED (1<<0)
+#define ACER_CAP_WIRELESS (1<<1)
+#define ACER_CAP_BLUETOOTH (1<<2)
+#define ACER_CAP_BRIGHTNESS (1<<3)
+#define ACER_CAP_THREEG (1<<4)
+#define ACER_CAP_ACCEL (1<<5)
+#define ACER_CAP_ANY (0xFFFFFFFF)
+
+/*
+ * Interface type flags
+ */
+enum interface_flags {
+ ACER_AMW0,
+ ACER_AMW0_V2,
+ ACER_WMID,
+ ACER_WMID_v2,
+};
+
+#define ACER_DEFAULT_WIRELESS 0
+#define ACER_DEFAULT_BLUETOOTH 0
+#define ACER_DEFAULT_MAILLED 0
+#define ACER_DEFAULT_THREEG 0
+
+static int max_brightness = 0xF;
+
+static int mailled = -1;
+static int brightness = -1;
+static int threeg = -1;
+static int force_series;
+static bool ec_raw_mode;
+static bool has_type_aa;
+static u16 commun_func_bitmap;
+static u8 commun_fn_key_number;
+
+module_param(mailled, int, 0444);
+module_param(brightness, int, 0444);
+module_param(threeg, int, 0444);
+module_param(force_series, int, 0444);
+module_param(ec_raw_mode, bool, 0444);
+MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
+MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
+MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
+MODULE_PARM_DESC(force_series, "Force a different laptop series");
+MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
+
+struct acer_data {
+ int mailled;
+ int threeg;
+ int brightness;
+};
+
+struct acer_debug {
+ struct dentry *root;
+ struct dentry *devices;
+ u32 wmid_devices;
+};
+
+static struct rfkill *wireless_rfkill;
+static struct rfkill *bluetooth_rfkill;
+static struct rfkill *threeg_rfkill;
+static bool rfkill_inited;
+
+/* Each low-level interface must define at least some of the following */
+struct wmi_interface {
+ /* The WMI device type */
+ u32 type;
+
+ /* The capabilities this interface provides */
+ u32 capability;
+
+ /* Private data for the current interface */
+ struct acer_data data;
+
+ /* debugfs entries associated with this interface */
+ struct acer_debug debug;
+};
+
+/* The static interface pointer, points to the currently detected interface */
+static struct wmi_interface *interface;
+
+/*
+ * Embedded Controller quirks
+ * Some laptops require us to directly access the EC to either enable or query
+ * features that are not available through WMI.
+ */
+
+struct quirk_entry {
+ u8 wireless;
+ u8 mailled;
+ s8 brightness;
+ u8 bluetooth;
+};
+
+static struct quirk_entry *quirks;
+
+static void __init set_quirks(void)
+{
+ if (!interface)
+ return;
+
+ if (quirks->mailled)
+ interface->capability |= ACER_CAP_MAILLED;
+
+ if (quirks->brightness)
+ interface->capability |= ACER_CAP_BRIGHTNESS;
+}
+
+static int __init dmi_matched(const struct dmi_system_id *dmi)
+{
+ quirks = dmi->driver_data;
+ return 1;
+}
+
+static struct quirk_entry quirk_unknown = {
+};
+
+static struct quirk_entry quirk_acer_aspire_1520 = {
+ .brightness = -1,
+};
+
+static struct quirk_entry quirk_acer_travelmate_2490 = {
+ .mailled = 1,
+};
+
+/* This AMW0 laptop has no bluetooth */
+static struct quirk_entry quirk_medion_md_98300 = {
+ .wireless = 1,
+};
+
+static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
+ .wireless = 2,
+};
+
+static struct quirk_entry quirk_lenovo_ideapad_s205 = {
+ .wireless = 3,
+};
+
+/* The Aspire One has a dummy ACPI-WMI interface - disable it */
+static const struct dmi_system_id acer_blacklist[] __initconst = {
+ {
+ .ident = "Acer Aspire One (SSD)",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
+ },
+ },
+ {
+ .ident = "Acer Aspire One (HDD)",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
+ },
+ },
+ {}
+};
+
+static const struct dmi_system_id acer_quirks[] __initconst = {
+ {
+ .callback = dmi_matched,
+ .ident = "Acer Aspire 1360",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
+ },
+ .driver_data = &quirk_acer_aspire_1520,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Acer Aspire 1520",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
+ },
+ .driver_data = &quirk_acer_aspire_1520,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Acer Aspire 3100",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
+ },
+ .driver_data = &quirk_acer_travelmate_2490,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Acer Aspire 3610",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
+ },
+ .driver_data = &quirk_acer_travelmate_2490,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Acer Aspire 5100",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
+ },
+ .driver_data = &quirk_acer_travelmate_2490,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Acer Aspire 5610",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
+ },
+ .driver_data = &quirk_acer_travelmate_2490,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Acer Aspire 5630",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
+ },
+ .driver_data = &quirk_acer_travelmate_2490,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Acer Aspire 5650",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
+ },
+ .driver_data = &quirk_acer_travelmate_2490,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Acer Aspire 5680",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
+ },
+ .driver_data = &quirk_acer_travelmate_2490,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Acer Aspire 9110",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
+ },
+ .driver_data = &quirk_acer_travelmate_2490,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Acer TravelMate 2490",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
+ },
+ .driver_data = &quirk_acer_travelmate_2490,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Acer TravelMate 4200",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
+ },
+ .driver_data = &quirk_acer_travelmate_2490,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Fujitsu Siemens Amilo Li 1718",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
+ },
+ .driver_data = &quirk_fujitsu_amilo_li_1718,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Medion MD 98300",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
+ },
+ .driver_data = &quirk_medion_md_98300,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Lenovo Ideapad S205",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
+ },
+ .driver_data = &quirk_lenovo_ideapad_s205,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Lenovo Ideapad S205 (Brazos)",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
+ },
+ .driver_data = &quirk_lenovo_ideapad_s205,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Lenovo 3000 N200",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
+ },
+ .driver_data = &quirk_fujitsu_amilo_li_1718,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Lenovo Ideapad S205-10382JG",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
+ },
+ .driver_data = &quirk_lenovo_ideapad_s205,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Lenovo Ideapad S205-1038DPG",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
+ },
+ .driver_data = &quirk_lenovo_ideapad_s205,
+ },
+ {}
+};
+
+static int __init
+video_set_backlight_video_vendor(const struct dmi_system_id *d)
+{
+ interface->capability &= ~ACER_CAP_BRIGHTNESS;
+ pr_info("Brightness must be controlled by generic video driver\n");
+ return 0;
+}
+
+static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
+ {
+ .callback = video_set_backlight_video_vendor,
+ .ident = "Acer TravelMate 4750",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
+ },
+ },
+ {
+ .callback = video_set_backlight_video_vendor,
+ .ident = "Acer Extensa 5235",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
+ },
+ },
+ {
+ .callback = video_set_backlight_video_vendor,
+ .ident = "Acer TravelMate 5760",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
+ },
+ },
+ {
+ .callback = video_set_backlight_video_vendor,
+ .ident = "Acer Aspire 5750",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
+ },
+ },
+ {
+ .callback = video_set_backlight_video_vendor,
+ .ident = "Acer Aspire 5741",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
+ },
+ },
+ {
+ /*
+ * Note no video_set_backlight_video_vendor, we must use the
+ * acer interface, as there is no native backlight interface.
+ */
+ .ident = "Acer KAV80",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
+ },
+ },
+ {}
+};
+
+/* Find which quirks are needed for a particular vendor/ model pair */
+static void __init find_quirks(void)
+{
+ if (!force_series) {
+ dmi_check_system(acer_quirks);
+ } else if (force_series == 2490) {
+ quirks = &quirk_acer_travelmate_2490;
+ }
+
+ if (quirks == NULL)
+ quirks = &quirk_unknown;
+
+ set_quirks();
+}
+
+/*
+ * General interface convenience methods
+ */
+
+static bool has_cap(u32 cap)
+{
+ if ((interface->capability & cap) != 0)
+ return 1;
+
+ return 0;
+}
+
+/*
+ * AMW0 (V1) interface
+ */
+struct wmab_args {
+ u32 eax;
+ u32 ebx;
+ u32 ecx;
+ u32 edx;
+};
+
+struct wmab_ret {
+ u32 eax;
+ u32 ebx;
+ u32 ecx;
+ u32 edx;
+ u32 eex;
+};
+
+static acpi_status wmab_execute(struct wmab_args *regbuf,
+struct acpi_buffer *result)
+{
+ struct acpi_buffer input;
+ acpi_status status;
+ input.length = sizeof(struct wmab_args);
+ input.pointer = (u8 *)regbuf;
+
+ status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
+
+ return status;
+}
+
+static acpi_status AMW0_get_u32(u32 *value, u32 cap)
+{
+ int err;
+ u8 result;
+
+ switch (cap) {
+ case ACER_CAP_MAILLED:
+ switch (quirks->mailled) {
+ default:
+ err = ec_read(0xA, &result);
+ if (err)
+ return AE_ERROR;
+ *value = (result >> 7) & 0x1;
+ return AE_OK;
+ }
+ break;
+ case ACER_CAP_WIRELESS:
+ switch (quirks->wireless) {
+ case 1:
+ err = ec_read(0x7B, &result);
+ if (err)
+ return AE_ERROR;
+ *value = result & 0x1;
+ return AE_OK;
+ case 2:
+ err = ec_read(0x71, &result);
+ if (err)
+ return AE_ERROR;
+ *value = result & 0x1;
+ return AE_OK;
+ case 3:
+ err = ec_read(0x78, &result);
+ if (err)
+ return AE_ERROR;
+ *value = result & 0x1;
+ return AE_OK;
+ default:
+ err = ec_read(0xA, &result);
+ if (err)
+ return AE_ERROR;
+ *value = (result >> 2) & 0x1;
+ return AE_OK;
+ }
+ break;
+ case ACER_CAP_BLUETOOTH:
+ switch (quirks->bluetooth) {
+ default:
+ err = ec_read(0xA, &result);
+ if (err)
+ return AE_ERROR;
+ *value = (result >> 4) & 0x1;
+ return AE_OK;
+ }
+ break;
+ case ACER_CAP_BRIGHTNESS:
+ switch (quirks->brightness) {
+ default:
+ err = ec_read(0x83, &result);
+ if (err)
+ return AE_ERROR;
+ *value = result;
+ return AE_OK;
+ }
+ break;
+ default:
+ return AE_ERROR;
+ }
+ return AE_OK;
+}
+
+static acpi_status AMW0_set_u32(u32 value, u32 cap)
+{
+ struct wmab_args args;
+
+ args.eax = ACER_AMW0_WRITE;
+ args.ebx = value ? (1<<8) : 0;
+ args.ecx = args.edx = 0;
+
+ switch (cap) {
+ case ACER_CAP_MAILLED:
+ if (value > 1)
+ return AE_BAD_PARAMETER;
+ args.ebx |= ACER_AMW0_MAILLED_MASK;
+ break;
+ case ACER_CAP_WIRELESS:
+ if (value > 1)
+ return AE_BAD_PARAMETER;
+ args.ebx |= ACER_AMW0_WIRELESS_MASK;
+ break;
+ case ACER_CAP_BLUETOOTH:
+ if (value > 1)
+ return AE_BAD_PARAMETER;
+ args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
+ break;
+ case ACER_CAP_BRIGHTNESS:
+ if (value > max_brightness)
+ return AE_BAD_PARAMETER;
+ switch (quirks->brightness) {
+ default:
+ return ec_write(0x83, value);
+ break;
+ }
+ default:
+ return AE_ERROR;
+ }
+
+ /* Actually do the set */
+ return wmab_execute(&args, NULL);
+}
+
+static acpi_status __init AMW0_find_mailled(void)
+{
+ struct wmab_args args;
+ struct wmab_ret ret;
+ acpi_status status = AE_OK;
+ struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+
+ args.eax = 0x86;
+ args.ebx = args.ecx = args.edx = 0;
+
+ status = wmab_execute(&args, &out);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = (union acpi_object *) out.pointer;
+ if (obj && obj->type == ACPI_TYPE_BUFFER &&
+ obj->buffer.length == sizeof(struct wmab_ret)) {
+ ret = *((struct wmab_ret *) obj->buffer.pointer);
+ } else {
+ kfree(out.pointer);
+ return AE_ERROR;
+ }
+
+ if (ret.eex & 0x1)
+ interface->capability |= ACER_CAP_MAILLED;
+
+ kfree(out.pointer);
+
+ return AE_OK;
+}
+
+static int AMW0_set_cap_acpi_check_device_found __initdata;
+
+static acpi_status __init AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
+ u32 level, void *context, void **retval)
+{
+ AMW0_set_cap_acpi_check_device_found = 1;
+ return AE_OK;
+}
+
+static const struct acpi_device_id norfkill_ids[] __initconst = {
+ { "VPC2004", 0},
+ { "IBM0068", 0},
+ { "LEN0068", 0},
+ { "SNY5001", 0}, /* sony-laptop in charge */
+ { "", 0},
+};
+
+static int __init AMW0_set_cap_acpi_check_device(void)
+{
+ const struct acpi_device_id *id;
+
+ for (id = norfkill_ids; id->id[0]; id++)
+ acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
+ NULL, NULL);
+ return AMW0_set_cap_acpi_check_device_found;
+}
+
+static acpi_status __init AMW0_set_capabilities(void)
+{
+ struct wmab_args args;
+ struct wmab_ret ret;
+ acpi_status status;
+ struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+
+ /*
+ * On laptops with this strange GUID (non Acer), normal probing doesn't
+ * work.
+ */
+ if (wmi_has_guid(AMW0_GUID2)) {
+ if ((quirks != &quirk_unknown) ||
+ !AMW0_set_cap_acpi_check_device())
+ interface->capability |= ACER_CAP_WIRELESS;
+ return AE_OK;
+ }
+
+ args.eax = ACER_AMW0_WRITE;
+ args.ecx = args.edx = 0;
+
+ args.ebx = 0xa2 << 8;
+ args.ebx |= ACER_AMW0_WIRELESS_MASK;
+
+ status = wmab_execute(&args, &out);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = out.pointer;
+ if (obj && obj->type == ACPI_TYPE_BUFFER &&
+ obj->buffer.length == sizeof(struct wmab_ret)) {
+ ret = *((struct wmab_ret *) obj->buffer.pointer);
+ } else {
+ status = AE_ERROR;
+ goto out;
+ }
+
+ if (ret.eax & 0x1)
+ interface->capability |= ACER_CAP_WIRELESS;
+
+ args.ebx = 2 << 8;
+ args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
+
+ /*
+ * It's ok to use existing buffer for next wmab_execute call.
+ * But we need to kfree(out.pointer) if next wmab_execute fail.
+ */
+ status = wmab_execute(&args, &out);
+ if (ACPI_FAILURE(status))
+ goto out;
+
+ obj = (union acpi_object *) out.pointer;
+ if (obj && obj->type == ACPI_TYPE_BUFFER
+ && obj->buffer.length == sizeof(struct wmab_ret)) {
+ ret = *((struct wmab_ret *) obj->buffer.pointer);
+ } else {
+ status = AE_ERROR;
+ goto out;
+ }
+
+ if (ret.eax & 0x1)
+ interface->capability |= ACER_CAP_BLUETOOTH;
+
+ /*
+ * This appears to be safe to enable, since all Wistron based laptops
+ * appear to use the same EC register for brightness, even if they
+ * differ for wireless, etc
+ */
+ if (quirks->brightness >= 0)
+ interface->capability |= ACER_CAP_BRIGHTNESS;
+
+ status = AE_OK;
+out:
+ kfree(out.pointer);
+ return status;
+}
+
+static struct wmi_interface AMW0_interface = {
+ .type = ACER_AMW0,
+};
+
+static struct wmi_interface AMW0_V2_interface = {
+ .type = ACER_AMW0_V2,
+};
+
+/*
+ * New interface (The WMID interface)
+ */
+static acpi_status
+WMI_execute_u32(u32 method_id, u32 in, u32 *out)
+{
+ struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
+ struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ u32 tmp = 0;
+ acpi_status status;
+
+ status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
+
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = (union acpi_object *) result.pointer;
+ if (obj) {
+ if (obj->type == ACPI_TYPE_BUFFER &&
+ (obj->buffer.length == sizeof(u32) ||
+ obj->buffer.length == sizeof(u64))) {
+ tmp = *((u32 *) obj->buffer.pointer);
+ } else if (obj->type == ACPI_TYPE_INTEGER) {
+ tmp = (u32) obj->integer.value;
+ }
+ }
+
+ if (out)
+ *out = tmp;
+
+ kfree(result.pointer);
+
+ return status;
+}
+
+static acpi_status WMID_get_u32(u32 *value, u32 cap)
+{
+ acpi_status status;
+ u8 tmp;
+ u32 result, method_id = 0;
+
+ switch (cap) {
+ case ACER_CAP_WIRELESS:
+ method_id = ACER_WMID_GET_WIRELESS_METHODID;
+ break;
+ case ACER_CAP_BLUETOOTH:
+ method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
+ break;
+ case ACER_CAP_BRIGHTNESS:
+ method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
+ break;
+ case ACER_CAP_THREEG:
+ method_id = ACER_WMID_GET_THREEG_METHODID;
+ break;
+ case ACER_CAP_MAILLED:
+ if (quirks->mailled == 1) {
+ ec_read(0x9f, &tmp);
+ *value = tmp & 0x1;
+ return 0;
+ }
+ default:
+ return AE_ERROR;
+ }
+ status = WMI_execute_u32(method_id, 0, &result);
+
+ if (ACPI_SUCCESS(status))
+ *value = (u8)result;
+
+ return status;
+}
+
+static acpi_status WMID_set_u32(u32 value, u32 cap)
+{
+ u32 method_id = 0;
+ char param;
+
+ switch (cap) {
+ case ACER_CAP_BRIGHTNESS:
+ if (value > max_brightness)
+ return AE_BAD_PARAMETER;
+ method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
+ break;
+ case ACER_CAP_WIRELESS:
+ if (value > 1)
+ return AE_BAD_PARAMETER;
+ method_id = ACER_WMID_SET_WIRELESS_METHODID;
+ break;
+ case ACER_CAP_BLUETOOTH:
+ if (value > 1)
+ return AE_BAD_PARAMETER;
+ method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
+ break;
+ case ACER_CAP_THREEG:
+ if (value > 1)
+ return AE_BAD_PARAMETER;
+ method_id = ACER_WMID_SET_THREEG_METHODID;
+ break;
+ case ACER_CAP_MAILLED:
+ if (value > 1)
+ return AE_BAD_PARAMETER;
+ if (quirks->mailled == 1) {
+ param = value ? 0x92 : 0x93;
+ i8042_lock_chip();
+ i8042_command(&param, 0x1059);
+ i8042_unlock_chip();
+ return 0;
+ }
+ break;
+ default:
+ return AE_ERROR;
+ }
+ return WMI_execute_u32(method_id, (u32)value, NULL);
+}
+
+static acpi_status wmid3_get_device_status(u32 *value, u16 device)
+{
+ struct wmid3_gds_return_value return_value;
+ acpi_status status;
+ union acpi_object *obj;
+ struct wmid3_gds_get_input_param params = {
+ .function_num = 0x1,
+ .hotkey_number = commun_fn_key_number,
+ .devices = device,
+ };
+ struct acpi_buffer input = {
+ sizeof(struct wmid3_gds_get_input_param),
+ &params
+ };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+
+ status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = output.pointer;
+
+ if (!obj)
+ return AE_ERROR;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return AE_ERROR;
+ }
+ if (obj->buffer.length != 8) {
+ pr_warn("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return AE_ERROR;
+ }
+
+ return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
+ kfree(obj);
+
+ if (return_value.error_code || return_value.ec_return_value)
+ pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
+ device,
+ return_value.error_code,
+ return_value.ec_return_value);
+ else
+ *value = !!(return_value.devices & device);
+
+ return status;
+}
+
+static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
+{
+ u16 device;
+
+ switch (cap) {
+ case ACER_CAP_WIRELESS:
+ device = ACER_WMID3_GDS_WIRELESS;
+ break;
+ case ACER_CAP_BLUETOOTH:
+ device = ACER_WMID3_GDS_BLUETOOTH;
+ break;
+ case ACER_CAP_THREEG:
+ device = ACER_WMID3_GDS_THREEG;
+ break;
+ default:
+ return AE_ERROR;
+ }
+ return wmid3_get_device_status(value, device);
+}
+
+static acpi_status wmid3_set_device_status(u32 value, u16 device)
+{
+ struct wmid3_gds_return_value return_value;
+ acpi_status status;
+ union acpi_object *obj;
+ u16 devices;
+ struct wmid3_gds_get_input_param get_params = {
+ .function_num = 0x1,
+ .hotkey_number = commun_fn_key_number,
+ .devices = commun_func_bitmap,
+ };
+ struct acpi_buffer get_input = {
+ sizeof(struct wmid3_gds_get_input_param),
+ &get_params
+ };
+ struct wmid3_gds_set_input_param set_params = {
+ .function_num = 0x2,
+ .hotkey_number = commun_fn_key_number,
+ .devices = commun_func_bitmap,
+ };
+ struct acpi_buffer set_input = {
+ sizeof(struct wmid3_gds_set_input_param),
+ &set_params
+ };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
+
+ status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = output.pointer;
+
+ if (!obj)
+ return AE_ERROR;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return AE_ERROR;
+ }
+ if (obj->buffer.length != 8) {
+ pr_warn("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return AE_ERROR;
+ }
+
+ return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
+ kfree(obj);
+
+ if (return_value.error_code || return_value.ec_return_value) {
+ pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
+ return_value.error_code,
+ return_value.ec_return_value);
+ return status;
+ }
+
+ devices = return_value.devices;
+ set_params.devices = (value) ? (devices | device) : (devices & ~device);
+
+ status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = output2.pointer;
+
+ if (!obj)
+ return AE_ERROR;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return AE_ERROR;
+ }
+ if (obj->buffer.length != 4) {
+ pr_warn("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return AE_ERROR;
+ }
+
+ return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
+ kfree(obj);
+
+ if (return_value.error_code || return_value.ec_return_value)
+ pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
+ return_value.error_code,
+ return_value.ec_return_value);
+
+ return status;
+}
+
+static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
+{
+ u16 device;
+
+ switch (cap) {
+ case ACER_CAP_WIRELESS:
+ device = ACER_WMID3_GDS_WIRELESS;
+ break;
+ case ACER_CAP_BLUETOOTH:
+ device = ACER_WMID3_GDS_BLUETOOTH;
+ break;
+ case ACER_CAP_THREEG:
+ device = ACER_WMID3_GDS_THREEG;
+ break;
+ default:
+ return AE_ERROR;
+ }
+ return wmid3_set_device_status(value, device);
+}
+
+static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
+{
+ struct hotkey_function_type_aa *type_aa;
+
+ /* We are looking for OEM-specific Type AAh */
+ if (header->type != 0xAA)
+ return;
+
+ has_type_aa = true;
+ type_aa = (struct hotkey_function_type_aa *) header;
+
+ pr_info("Function bitmap for Communication Button: 0x%x\n",
+ type_aa->commun_func_bitmap);
+ commun_func_bitmap = type_aa->commun_func_bitmap;
+
+ if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
+ interface->capability |= ACER_CAP_WIRELESS;
+ if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
+ interface->capability |= ACER_CAP_THREEG;
+ if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
+ interface->capability |= ACER_CAP_BLUETOOTH;
+
+ commun_fn_key_number = type_aa->commun_fn_key_number;
+}
+
+static acpi_status __init WMID_set_capabilities(void)
+{
+ struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
+ union acpi_object *obj;
+ acpi_status status;
+ u32 devices;
+
+ status = wmi_query_block(WMID_GUID2, 1, &out);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = (union acpi_object *) out.pointer;
+ if (obj) {
+ if (obj->type == ACPI_TYPE_BUFFER &&
+ (obj->buffer.length == sizeof(u32) ||
+ obj->buffer.length == sizeof(u64))) {
+ devices = *((u32 *) obj->buffer.pointer);
+ } else if (obj->type == ACPI_TYPE_INTEGER) {
+ devices = (u32) obj->integer.value;
+ } else {
+ kfree(out.pointer);
+ return AE_ERROR;
+ }
+ } else {
+ kfree(out.pointer);
+ return AE_ERROR;
+ }
+
+ pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
+ if (devices & 0x07)
+ interface->capability |= ACER_CAP_WIRELESS;
+ if (devices & 0x40)
+ interface->capability |= ACER_CAP_THREEG;
+ if (devices & 0x10)
+ interface->capability |= ACER_CAP_BLUETOOTH;
+
+ if (!(devices & 0x20))
+ max_brightness = 0x9;
+
+ kfree(out.pointer);
+ return status;
+}
+
+static struct wmi_interface wmid_interface = {
+ .type = ACER_WMID,
+};
+
+static struct wmi_interface wmid_v2_interface = {
+ .type = ACER_WMID_v2,
+};
+
+/*
+ * Generic Device (interface-independent)
+ */
+
+static acpi_status get_u32(u32 *value, u32 cap)
+{
+ acpi_status status = AE_ERROR;
+
+ switch (interface->type) {
+ case ACER_AMW0:
+ status = AMW0_get_u32(value, cap);
+ break;
+ case ACER_AMW0_V2:
+ if (cap == ACER_CAP_MAILLED) {
+ status = AMW0_get_u32(value, cap);
+ break;
+ }
+ case ACER_WMID:
+ status = WMID_get_u32(value, cap);
+ break;
+ case ACER_WMID_v2:
+ if (cap & (ACER_CAP_WIRELESS |
+ ACER_CAP_BLUETOOTH |
+ ACER_CAP_THREEG))
+ status = wmid_v2_get_u32(value, cap);
+ else if (wmi_has_guid(WMID_GUID2))
+ status = WMID_get_u32(value, cap);
+ break;
+ }
+
+ return status;
+}
+
+static acpi_status set_u32(u32 value, u32 cap)
+{
+ acpi_status status;
+
+ if (interface->capability & cap) {
+ switch (interface->type) {
+ case ACER_AMW0:
+ return AMW0_set_u32(value, cap);
+ case ACER_AMW0_V2:
+ if (cap == ACER_CAP_MAILLED)
+ return AMW0_set_u32(value, cap);
+
+ /*
+ * On some models, some WMID methods don't toggle
+ * properly. For those cases, we want to run the AMW0
+ * method afterwards to be certain we've really toggled
+ * the device state.
+ */
+ if (cap == ACER_CAP_WIRELESS ||
+ cap == ACER_CAP_BLUETOOTH) {
+ status = WMID_set_u32(value, cap);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ return AMW0_set_u32(value, cap);
+ }
+ case ACER_WMID:
+ return WMID_set_u32(value, cap);
+ case ACER_WMID_v2:
+ if (cap & (ACER_CAP_WIRELESS |
+ ACER_CAP_BLUETOOTH |
+ ACER_CAP_THREEG))
+ return wmid_v2_set_u32(value, cap);
+ else if (wmi_has_guid(WMID_GUID2))
+ return WMID_set_u32(value, cap);
+ default:
+ return AE_BAD_PARAMETER;
+ }
+ }
+ return AE_BAD_PARAMETER;
+}
+
+static void __init acer_commandline_init(void)
+{
+ /*
+ * These will all fail silently if the value given is invalid, or the
+ * capability isn't available on the given interface
+ */
+ if (mailled >= 0)
+ set_u32(mailled, ACER_CAP_MAILLED);
+ if (!has_type_aa && threeg >= 0)
+ set_u32(threeg, ACER_CAP_THREEG);
+ if (brightness >= 0)
+ set_u32(brightness, ACER_CAP_BRIGHTNESS);
+}
+
+/*
+ * LED device (Mail LED only, no other LEDs known yet)
+ */
+static void mail_led_set(struct led_classdev *led_cdev,
+enum led_brightness value)
+{
+ set_u32(value, ACER_CAP_MAILLED);
+}
+
+static struct led_classdev mail_led = {
+ .name = "acer-wmi::mail",
+ .brightness_set = mail_led_set,
+};
+
+static int acer_led_init(struct device *dev)
+{
+ return led_classdev_register(dev, &mail_led);
+}
+
+static void acer_led_exit(void)
+{
+ set_u32(LED_OFF, ACER_CAP_MAILLED);
+ led_classdev_unregister(&mail_led);
+}
+
+/*
+ * Backlight device
+ */
+static struct backlight_device *acer_backlight_device;
+
+static int read_brightness(struct backlight_device *bd)
+{
+ u32 value;
+ get_u32(&value, ACER_CAP_BRIGHTNESS);
+ return value;
+}
+
+static int update_bl_status(struct backlight_device *bd)
+{
+ int intensity = bd->props.brightness;
+
+ if (bd->props.power != FB_BLANK_UNBLANK)
+ intensity = 0;
+ if (bd->props.fb_blank != FB_BLANK_UNBLANK)
+ intensity = 0;
+
+ set_u32(intensity, ACER_CAP_BRIGHTNESS);
+
+ return 0;
+}
+
+static const struct backlight_ops acer_bl_ops = {
+ .get_brightness = read_brightness,
+ .update_status = update_bl_status,
+};
+
+static int acer_backlight_init(struct device *dev)
+{
+ struct backlight_properties props;
+ struct backlight_device *bd;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = max_brightness;
+ bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
+ &props);
+ if (IS_ERR(bd)) {
+ pr_err("Could not register Acer backlight device\n");
+ acer_backlight_device = NULL;
+ return PTR_ERR(bd);
+ }
+
+ acer_backlight_device = bd;
+
+ bd->props.power = FB_BLANK_UNBLANK;
+ bd->props.brightness = read_brightness(bd);
+ backlight_update_status(bd);
+ return 0;
+}
+
+static void acer_backlight_exit(void)
+{
+ backlight_device_unregister(acer_backlight_device);
+}
+
+/*
+ * Accelerometer device
+ */
+static acpi_handle gsensor_handle;
+
+static int acer_gsensor_init(void)
+{
+ acpi_status status;
+ struct acpi_buffer output;
+ union acpi_object out_obj;
+
+ output.length = sizeof(out_obj);
+ output.pointer = &out_obj;
+ status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
+ if (ACPI_FAILURE(status))
+ return -1;
+
+ return 0;
+}
+
+static int acer_gsensor_open(struct input_dev *input)
+{
+ return acer_gsensor_init();
+}
+
+static int acer_gsensor_event(void)
+{
+ acpi_status status;
+ struct acpi_buffer output;
+ union acpi_object out_obj[5];
+
+ if (!has_cap(ACER_CAP_ACCEL))
+ return -1;
+
+ output.length = sizeof(out_obj);
+ output.pointer = out_obj;
+
+ status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
+ if (ACPI_FAILURE(status))
+ return -1;
+
+ if (out_obj->package.count != 4)
+ return -1;
+
+ input_report_abs(acer_wmi_accel_dev, ABS_X,
+ (s16)out_obj->package.elements[0].integer.value);
+ input_report_abs(acer_wmi_accel_dev, ABS_Y,
+ (s16)out_obj->package.elements[1].integer.value);
+ input_report_abs(acer_wmi_accel_dev, ABS_Z,
+ (s16)out_obj->package.elements[2].integer.value);
+ input_sync(acer_wmi_accel_dev);
+ return 0;
+}
+
+/*
+ * Rfkill devices
+ */
+static void acer_rfkill_update(struct work_struct *ignored);
+static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
+static void acer_rfkill_update(struct work_struct *ignored)
+{
+ u32 state;
+ acpi_status status;
+
+ if (has_cap(ACER_CAP_WIRELESS)) {
+ status = get_u32(&state, ACER_CAP_WIRELESS);
+ if (ACPI_SUCCESS(status)) {
+ if (quirks->wireless == 3)
+ rfkill_set_hw_state(wireless_rfkill, !state);
+ else
+ rfkill_set_sw_state(wireless_rfkill, !state);
+ }
+ }
+
+ if (has_cap(ACER_CAP_BLUETOOTH)) {
+ status = get_u32(&state, ACER_CAP_BLUETOOTH);
+ if (ACPI_SUCCESS(status))
+ rfkill_set_sw_state(bluetooth_rfkill, !state);
+ }
+
+ if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
+ status = get_u32(&state, ACER_WMID3_GDS_THREEG);
+ if (ACPI_SUCCESS(status))
+ rfkill_set_sw_state(threeg_rfkill, !state);
+ }
+
+ schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
+}
+
+static int acer_rfkill_set(void *data, bool blocked)
+{
+ acpi_status status;
+ u32 cap = (unsigned long)data;
+
+ if (rfkill_inited) {
+ status = set_u32(!blocked, cap);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static const struct rfkill_ops acer_rfkill_ops = {
+ .set_block = acer_rfkill_set,
+};
+
+static struct rfkill *acer_rfkill_register(struct device *dev,
+ enum rfkill_type type,
+ char *name, u32 cap)
+{
+ int err;
+ struct rfkill *rfkill_dev;
+ u32 state;
+ acpi_status status;
+
+ rfkill_dev = rfkill_alloc(name, dev, type,
+ &acer_rfkill_ops,
+ (void *)(unsigned long)cap);
+ if (!rfkill_dev)
+ return ERR_PTR(-ENOMEM);
+
+ status = get_u32(&state, cap);
+
+ err = rfkill_register(rfkill_dev);
+ if (err) {
+ rfkill_destroy(rfkill_dev);
+ return ERR_PTR(err);
+ }
+
+ if (ACPI_SUCCESS(status))
+ rfkill_set_sw_state(rfkill_dev, !state);
+
+ return rfkill_dev;
+}
+
+static int acer_rfkill_init(struct device *dev)
+{
+ int err;
+
+ if (has_cap(ACER_CAP_WIRELESS)) {
+ wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
+ "acer-wireless", ACER_CAP_WIRELESS);
+ if (IS_ERR(wireless_rfkill)) {
+ err = PTR_ERR(wireless_rfkill);
+ goto error_wireless;
+ }
+ }
+
+ if (has_cap(ACER_CAP_BLUETOOTH)) {
+ bluetooth_rfkill = acer_rfkill_register(dev,
+ RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
+ ACER_CAP_BLUETOOTH);
+ if (IS_ERR(bluetooth_rfkill)) {
+ err = PTR_ERR(bluetooth_rfkill);
+ goto error_bluetooth;
+ }
+ }
+
+ if (has_cap(ACER_CAP_THREEG)) {
+ threeg_rfkill = acer_rfkill_register(dev,
+ RFKILL_TYPE_WWAN, "acer-threeg",
+ ACER_CAP_THREEG);
+ if (IS_ERR(threeg_rfkill)) {
+ err = PTR_ERR(threeg_rfkill);
+ goto error_threeg;
+ }
+ }
+
+ rfkill_inited = true;
+
+ if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
+ has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
+ schedule_delayed_work(&acer_rfkill_work,
+ round_jiffies_relative(HZ));
+
+ return 0;
+
+error_threeg:
+ if (has_cap(ACER_CAP_BLUETOOTH)) {
+ rfkill_unregister(bluetooth_rfkill);
+ rfkill_destroy(bluetooth_rfkill);
+ }
+error_bluetooth:
+ if (has_cap(ACER_CAP_WIRELESS)) {
+ rfkill_unregister(wireless_rfkill);
+ rfkill_destroy(wireless_rfkill);
+ }
+error_wireless:
+ return err;
+}
+
+static void acer_rfkill_exit(void)
+{
+ if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
+ has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
+ cancel_delayed_work_sync(&acer_rfkill_work);
+
+ if (has_cap(ACER_CAP_WIRELESS)) {
+ rfkill_unregister(wireless_rfkill);
+ rfkill_destroy(wireless_rfkill);
+ }
+
+ if (has_cap(ACER_CAP_BLUETOOTH)) {
+ rfkill_unregister(bluetooth_rfkill);
+ rfkill_destroy(bluetooth_rfkill);
+ }
+
+ if (has_cap(ACER_CAP_THREEG)) {
+ rfkill_unregister(threeg_rfkill);
+ rfkill_destroy(threeg_rfkill);
+ }
+ return;
+}
+
+/*
+ * sysfs interface
+ */
+static ssize_t show_bool_threeg(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ u32 result; \
+ acpi_status status;
+
+ pr_info("This threeg sysfs will be removed in 2014 - used by: %s\n",
+ current->comm);
+ status = get_u32(&result, ACER_CAP_THREEG);
+ if (ACPI_SUCCESS(status))
+ return sprintf(buf, "%u\n", result);
+ return sprintf(buf, "Read error\n");
+}
+
+static ssize_t set_bool_threeg(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ u32 tmp = simple_strtoul(buf, NULL, 10);
+ acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
+ pr_info("This threeg sysfs will be removed in 2014 - used by: %s\n",
+ current->comm);
+ if (ACPI_FAILURE(status))
+ return -EINVAL;
+ return count;
+}
+static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
+ set_bool_threeg);
+
+static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ pr_info("This interface sysfs will be removed in 2014 - used by: %s\n",
+ current->comm);
+ switch (interface->type) {
+ case ACER_AMW0:
+ return sprintf(buf, "AMW0\n");
+ case ACER_AMW0_V2:
+ return sprintf(buf, "AMW0 v2\n");
+ case ACER_WMID:
+ return sprintf(buf, "WMID\n");
+ case ACER_WMID_v2:
+ return sprintf(buf, "WMID v2\n");
+ default:
+ return sprintf(buf, "Error!\n");
+ }
+}
+
+static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
+
+static void acer_wmi_notify(u32 value, void *context)
+{
+ struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ struct event_return_value return_value;
+ acpi_status status;
+ u16 device_state;
+ const struct key_entry *key;
+ u32 scancode;
+
+ status = wmi_get_event_data(value, &response);
+ if (status != AE_OK) {
+ pr_warn("bad event status 0x%x\n", status);
+ return;
+ }
+
+ obj = (union acpi_object *)response.pointer;
+
+ if (!obj)
+ return;
+ if (obj->type != ACPI_TYPE_BUFFER) {
+ pr_warn("Unknown response received %d\n", obj->type);
+ kfree(obj);
+ return;
+ }
+ if (obj->buffer.length != 8) {
+ pr_warn("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return;
+ }
+
+ return_value = *((struct event_return_value *)obj->buffer.pointer);
+ kfree(obj);
+
+ switch (return_value.function) {
+ case WMID_HOTKEY_EVENT:
+ device_state = return_value.device_state;
+ pr_debug("device state: 0x%x\n", device_state);
+
+ key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
+ return_value.key_num);
+ if (!key) {
+ pr_warn("Unknown key number - 0x%x\n",
+ return_value.key_num);
+ } else {
+ scancode = return_value.key_num;
+ switch (key->keycode) {
+ case KEY_WLAN:
+ case KEY_BLUETOOTH:
+ if (has_cap(ACER_CAP_WIRELESS))
+ rfkill_set_sw_state(wireless_rfkill,
+ !(device_state & ACER_WMID3_GDS_WIRELESS));
+ if (has_cap(ACER_CAP_THREEG))
+ rfkill_set_sw_state(threeg_rfkill,
+ !(device_state & ACER_WMID3_GDS_THREEG));
+ if (has_cap(ACER_CAP_BLUETOOTH))
+ rfkill_set_sw_state(bluetooth_rfkill,
+ !(device_state & ACER_WMID3_GDS_BLUETOOTH));
+ break;
+ case KEY_TOUCHPAD_TOGGLE:
+ scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
+ KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
+ }
+ sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
+ }
+ break;
+ case WMID_ACCEL_EVENT:
+ acer_gsensor_event();
+ break;
+ default:
+ pr_warn("Unknown function number - %d - %d\n",
+ return_value.function, return_value.key_num);
+ break;
+ }
+}
+
+static acpi_status __init
+wmid3_set_lm_mode(struct lm_input_params *params,
+ struct lm_return_value *return_value)
+{
+ acpi_status status;
+ union acpi_object *obj;
+
+ struct acpi_buffer input = { sizeof(struct lm_input_params), params };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+
+ status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = output.pointer;
+
+ if (!obj)
+ return AE_ERROR;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return AE_ERROR;
+ }
+ if (obj->buffer.length != 4) {
+ pr_warn("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return AE_ERROR;
+ }
+
+ *return_value = *((struct lm_return_value *)obj->buffer.pointer);
+ kfree(obj);
+
+ return status;
+}
+
+static int __init acer_wmi_enable_ec_raw(void)
+{
+ struct lm_return_value return_value;
+ acpi_status status;
+ struct lm_input_params params = {
+ .function_num = 0x1,
+ .commun_devices = 0xFFFF,
+ .devices = 0xFFFF,
+ .lm_status = 0x00, /* Launch Manager Deactive */
+ };
+
+ status = wmid3_set_lm_mode(&params, &return_value);
+
+ if (return_value.error_code || return_value.ec_return_value)
+ pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
+ return_value.error_code,
+ return_value.ec_return_value);
+ else
+ pr_info("Enabled EC raw mode\n");
+
+ return status;
+}
+
+static int __init acer_wmi_enable_lm(void)
+{
+ struct lm_return_value return_value;
+ acpi_status status;
+ struct lm_input_params params = {
+ .function_num = 0x1,
+ .commun_devices = 0xFFFF,
+ .devices = 0xFFFF,
+ .lm_status = 0x01, /* Launch Manager Active */
+ };
+
+ status = wmid3_set_lm_mode(&params, &return_value);
+
+ if (return_value.error_code || return_value.ec_return_value)
+ pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
+ return_value.error_code,
+ return_value.ec_return_value);
+
+ return status;
+}
+
+static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
+ void *ctx, void **retval)
+{
+ *(acpi_handle *)retval = ah;
+ return AE_OK;
+}
+
+static int __init acer_wmi_get_handle(const char *name, const char *prop,
+ acpi_handle *ah)
+{
+ acpi_status status;
+ acpi_handle handle;
+
+ BUG_ON(!name || !ah);
+
+ handle = NULL;
+ status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
+ (void *)name, &handle);
+
+ if (ACPI_SUCCESS(status)) {
+ *ah = handle;
+ return 0;
+ } else {
+ return -ENODEV;
+ }
+}
+
+static int __init acer_wmi_accel_setup(void)
+{
+ int err;
+
+ err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
+ if (err)
+ return err;
+
+ interface->capability |= ACER_CAP_ACCEL;
+
+ acer_wmi_accel_dev = input_allocate_device();
+ if (!acer_wmi_accel_dev)
+ return -ENOMEM;
+
+ acer_wmi_accel_dev->open = acer_gsensor_open;
+
+ acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
+ acer_wmi_accel_dev->phys = "wmi/input1";
+ acer_wmi_accel_dev->id.bustype = BUS_HOST;
+ acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
+ input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
+ input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
+ input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
+
+ err = input_register_device(acer_wmi_accel_dev);
+ if (err)
+ goto err_free_dev;
+
+ return 0;
+
+err_free_dev:
+ input_free_device(acer_wmi_accel_dev);
+ return err;
+}
+
+static void acer_wmi_accel_destroy(void)
+{
+ input_unregister_device(acer_wmi_accel_dev);
+}
+
+static int __init acer_wmi_input_setup(void)
+{
+ acpi_status status;
+ int err;
+
+ acer_wmi_input_dev = input_allocate_device();
+ if (!acer_wmi_input_dev)
+ return -ENOMEM;
+
+ acer_wmi_input_dev->name = "Acer WMI hotkeys";
+ acer_wmi_input_dev->phys = "wmi/input0";
+ acer_wmi_input_dev->id.bustype = BUS_HOST;
+
+ err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
+ if (err)
+ goto err_free_dev;
+
+ status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
+ acer_wmi_notify, NULL);
+ if (ACPI_FAILURE(status)) {
+ err = -EIO;
+ goto err_free_keymap;
+ }
+
+ err = input_register_device(acer_wmi_input_dev);
+ if (err)
+ goto err_uninstall_notifier;
+
+ return 0;
+
+err_uninstall_notifier:
+ wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
+err_free_keymap:
+ sparse_keymap_free(acer_wmi_input_dev);
+err_free_dev:
+ input_free_device(acer_wmi_input_dev);
+ return err;
+}
+
+static void acer_wmi_input_destroy(void)
+{
+ wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
+ sparse_keymap_free(acer_wmi_input_dev);
+ input_unregister_device(acer_wmi_input_dev);
+}
+
+/*
+ * debugfs functions
+ */
+static u32 get_wmid_devices(void)
+{
+ struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
+ union acpi_object *obj;
+ acpi_status status;
+ u32 devices = 0;
+
+ status = wmi_query_block(WMID_GUID2, 1, &out);
+ if (ACPI_FAILURE(status))
+ return 0;
+
+ obj = (union acpi_object *) out.pointer;
+ if (obj) {
+ if (obj->type == ACPI_TYPE_BUFFER &&
+ (obj->buffer.length == sizeof(u32) ||
+ obj->buffer.length == sizeof(u64))) {
+ devices = *((u32 *) obj->buffer.pointer);
+ } else if (obj->type == ACPI_TYPE_INTEGER) {
+ devices = (u32) obj->integer.value;
+ }
+ }
+
+ kfree(out.pointer);
+ return devices;
+}
+
+/*
+ * Platform device
+ */
+static int acer_platform_probe(struct platform_device *device)
+{
+ int err;
+
+ if (has_cap(ACER_CAP_MAILLED)) {
+ err = acer_led_init(&device->dev);
+ if (err)
+ goto error_mailled;
+ }
+
+ if (has_cap(ACER_CAP_BRIGHTNESS)) {
+ err = acer_backlight_init(&device->dev);
+ if (err)
+ goto error_brightness;
+ }
+
+ err = acer_rfkill_init(&device->dev);
+ if (err)
+ goto error_rfkill;
+
+ return err;
+
+error_rfkill:
+ if (has_cap(ACER_CAP_BRIGHTNESS))
+ acer_backlight_exit();
+error_brightness:
+ if (has_cap(ACER_CAP_MAILLED))
+ acer_led_exit();
+error_mailled:
+ return err;
+}
+
+static int acer_platform_remove(struct platform_device *device)
+{
+ if (has_cap(ACER_CAP_MAILLED))
+ acer_led_exit();
+ if (has_cap(ACER_CAP_BRIGHTNESS))
+ acer_backlight_exit();
+
+ acer_rfkill_exit();
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int acer_suspend(struct device *dev)
+{
+ u32 value;
+ struct acer_data *data = &interface->data;
+
+ if (!data)
+ return -ENOMEM;
+
+ if (has_cap(ACER_CAP_MAILLED)) {
+ get_u32(&value, ACER_CAP_MAILLED);
+ set_u32(LED_OFF, ACER_CAP_MAILLED);
+ data->mailled = value;
+ }
+
+ if (has_cap(ACER_CAP_BRIGHTNESS)) {
+ get_u32(&value, ACER_CAP_BRIGHTNESS);
+ data->brightness = value;
+ }
+
+ return 0;
+}
+
+static int acer_resume(struct device *dev)
+{
+ struct acer_data *data = &interface->data;
+
+ if (!data)
+ return -ENOMEM;
+
+ if (has_cap(ACER_CAP_MAILLED))
+ set_u32(data->mailled, ACER_CAP_MAILLED);
+
+ if (has_cap(ACER_CAP_BRIGHTNESS))
+ set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
+
+ if (has_cap(ACER_CAP_ACCEL))
+ acer_gsensor_init();
+
+ return 0;
+}
+#else
+#define acer_suspend NULL
+#define acer_resume NULL
+#endif
+
+static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
+
+static void acer_platform_shutdown(struct platform_device *device)
+{
+ struct acer_data *data = &interface->data;
+
+ if (!data)
+ return;
+
+ if (has_cap(ACER_CAP_MAILLED))
+ set_u32(LED_OFF, ACER_CAP_MAILLED);
+}
+
+static struct platform_driver acer_platform_driver = {
+ .driver = {
+ .name = "acer-wmi",
+ .pm = &acer_pm,
+ },
+ .probe = acer_platform_probe,
+ .remove = acer_platform_remove,
+ .shutdown = acer_platform_shutdown,
+};
+
+static struct platform_device *acer_platform_device;
+
+static int remove_sysfs(struct platform_device *device)
+{
+ if (has_cap(ACER_CAP_THREEG))
+ device_remove_file(&device->dev, &dev_attr_threeg);
+
+ device_remove_file(&device->dev, &dev_attr_interface);
+
+ return 0;
+}
+
+static int __init create_sysfs(void)
+{
+ int retval = -ENOMEM;
+
+ if (has_cap(ACER_CAP_THREEG)) {
+ retval = device_create_file(&acer_platform_device->dev,
+ &dev_attr_threeg);
+ if (retval)
+ goto error_sysfs;
+ }
+
+ retval = device_create_file(&acer_platform_device->dev,
+ &dev_attr_interface);
+ if (retval)
+ goto error_sysfs;
+
+ return 0;
+
+error_sysfs:
+ remove_sysfs(acer_platform_device);
+ return retval;
+}
+
+static void remove_debugfs(void)
+{
+ debugfs_remove(interface->debug.devices);
+ debugfs_remove(interface->debug.root);
+}
+
+static int __init create_debugfs(void)
+{
+ interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
+ if (!interface->debug.root) {
+ pr_err("Failed to create debugfs directory");
+ return -ENOMEM;
+ }
+
+ interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
+ interface->debug.root,
+ &interface->debug.wmid_devices);
+ if (!interface->debug.devices)
+ goto error_debugfs;
+
+ return 0;
+
+error_debugfs:
+ remove_debugfs();
+ return -ENOMEM;
+}
+
+static int __init acer_wmi_init(void)
+{
+ int err;
+
+ pr_info("Acer Laptop ACPI-WMI Extras\n");
+
+ if (dmi_check_system(acer_blacklist)) {
+ pr_info("Blacklisted hardware detected - not loading\n");
+ return -ENODEV;
+ }
+
+ find_quirks();
+
+ /*
+ * Detect which ACPI-WMI interface we're using.
+ */
+ if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
+ interface = &AMW0_V2_interface;
+
+ if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
+ interface = &wmid_interface;
+
+ if (wmi_has_guid(WMID_GUID3))
+ interface = &wmid_v2_interface;
+
+ if (interface)
+ dmi_walk(type_aa_dmi_decode, NULL);
+
+ if (wmi_has_guid(WMID_GUID2) && interface) {
+ if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
+ pr_err("Unable to detect available WMID devices\n");
+ return -ENODEV;
+ }
+ /* WMID always provides brightness methods */
+ interface->capability |= ACER_CAP_BRIGHTNESS;
+ } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
+ pr_err("No WMID device detection method found\n");
+ return -ENODEV;
+ }
+
+ if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
+ interface = &AMW0_interface;
+
+ if (ACPI_FAILURE(AMW0_set_capabilities())) {
+ pr_err("Unable to detect available AMW0 devices\n");
+ return -ENODEV;
+ }
+ }
+
+ if (wmi_has_guid(AMW0_GUID1))
+ AMW0_find_mailled();
+
+ if (!interface) {
+ pr_err("No or unsupported WMI interface, unable to load\n");
+ return -ENODEV;
+ }
+
+ set_quirks();
+
+ if (dmi_check_system(video_vendor_dmi_table))
+ acpi_video_dmi_promote_vendor();
+ if (acpi_video_backlight_support()) {
+ interface->capability &= ~ACER_CAP_BRIGHTNESS;
+ pr_info("Brightness must be controlled by acpi video driver\n");
+ } else {
+ pr_info("Disabling ACPI video driver\n");
+ acpi_video_unregister_backlight();
+ }
+
+ if (wmi_has_guid(WMID_GUID3)) {
+ if (ec_raw_mode) {
+ if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
+ pr_err("Cannot enable EC raw mode\n");
+ return -ENODEV;
+ }
+ } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
+ pr_err("Cannot enable Launch Manager mode\n");
+ return -ENODEV;
+ }
+ } else if (ec_raw_mode) {
+ pr_info("No WMID EC raw mode enable method\n");
+ }
+
+ if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
+ err = acer_wmi_input_setup();
+ if (err)
+ return err;
+ }
+
+ acer_wmi_accel_setup();
+
+ err = platform_driver_register(&acer_platform_driver);
+ if (err) {
+ pr_err("Unable to register platform driver\n");
+ goto error_platform_register;
+ }
+
+ acer_platform_device = platform_device_alloc("acer-wmi", -1);
+ if (!acer_platform_device) {
+ err = -ENOMEM;
+ goto error_device_alloc;
+ }
+
+ err = platform_device_add(acer_platform_device);
+ if (err)
+ goto error_device_add;
+
+ err = create_sysfs();
+ if (err)
+ goto error_create_sys;
+
+ if (wmi_has_guid(WMID_GUID2)) {
+ interface->debug.wmid_devices = get_wmid_devices();
+ err = create_debugfs();
+ if (err)
+ goto error_create_debugfs;
+ }
+
+ /* Override any initial settings with values from the commandline */
+ acer_commandline_init();
+
+ return 0;
+
+error_create_debugfs:
+ remove_sysfs(acer_platform_device);
+error_create_sys:
+ platform_device_del(acer_platform_device);
+error_device_add:
+ platform_device_put(acer_platform_device);
+error_device_alloc:
+ platform_driver_unregister(&acer_platform_driver);
+error_platform_register:
+ if (wmi_has_guid(ACERWMID_EVENT_GUID))
+ acer_wmi_input_destroy();
+ if (has_cap(ACER_CAP_ACCEL))
+ acer_wmi_accel_destroy();
+
+ return err;
+}
+
+static void __exit acer_wmi_exit(void)
+{
+ if (wmi_has_guid(ACERWMID_EVENT_GUID))
+ acer_wmi_input_destroy();
+
+ if (has_cap(ACER_CAP_ACCEL))
+ acer_wmi_accel_destroy();
+
+ remove_sysfs(acer_platform_device);
+ remove_debugfs();
+ platform_device_unregister(acer_platform_device);
+ platform_driver_unregister(&acer_platform_driver);
+
+ pr_info("Acer Laptop WMI Extras unloaded\n");
+ return;
+}
+
+module_init(acer_wmi_init);
+module_exit(acer_wmi_exit);
diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
new file mode 100644
index 000000000..594c918b5
--- /dev/null
+++ b/drivers/platform/x86/acerhdf.c
@@ -0,0 +1,813 @@
+/*
+ * acerhdf - A driver which monitors the temperature
+ * of the aspire one netbook, turns on/off the fan
+ * as soon as the upper/lower threshold is reached.
+ *
+ * (C) 2009 - Peter Feuerer peter (a) piie.net
+ * http://piie.net
+ * 2009 Borislav Petkov bp (a) alien8.de
+ *
+ * Inspired by and many thanks to:
+ * o acerfand - Rachel Greenham
+ * o acer_ec.pl - Michael Kurz michi.kurz (at) googlemail.com
+ * - Petr Tomasek tomasek (#) etf,cuni,cz
+ * - Carlos Corbacho cathectic (at) gmail.com
+ * o lkml - Matthew Garrett
+ * - Borislav Petkov
+ * - Andreas Mohr
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) "acerhdf: " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/dmi.h>
+#include <linux/acpi.h>
+#include <linux/thermal.h>
+#include <linux/platform_device.h>
+
+/*
+ * The driver is started with "kernel mode off" by default. That means, the BIOS
+ * is still in control of the fan. In this mode the driver allows to read the
+ * temperature of the cpu and a userspace tool may take over control of the fan.
+ * If the driver is switched to "kernel mode" (e.g. via module parameter) the
+ * driver is in full control of the fan. If you want the module to be started in
+ * kernel mode by default, define the following:
+ */
+#undef START_IN_KERNEL_MODE
+
+#define DRV_VER "0.7.0"
+
+/*
+ * According to the Atom N270 datasheet,
+ * (http://download.intel.com/design/processor/datashts/320032.pdf) the
+ * CPU's optimal operating limits denoted in junction temperature as
+ * measured by the on-die thermal monitor are within 0 <= Tj <= 90. So,
+ * assume 89°C is critical temperature.
+ */
+#define ACERHDF_TEMP_CRIT 89000
+#define ACERHDF_FAN_OFF 0
+#define ACERHDF_FAN_AUTO 1
+
+/*
+ * No matter what value the user puts into the fanon variable, turn on the fan
+ * at 80 degree Celsius to prevent hardware damage
+ */
+#define ACERHDF_MAX_FANON 80000
+
+/*
+ * Maximum interval between two temperature checks is 15 seconds, as the die
+ * can get hot really fast under heavy load (plus we shouldn't forget about
+ * possible impact of _external_ aggressive sources such as heaters, sun etc.)
+ */
+#define ACERHDF_MAX_INTERVAL 15
+
+#ifdef START_IN_KERNEL_MODE
+static int kernelmode = 1;
+#else
+static int kernelmode;
+#endif
+
+static unsigned int interval = 10;
+static unsigned int fanon = 60000;
+static unsigned int fanoff = 53000;
+static unsigned int verbose;
+static unsigned int fanstate = ACERHDF_FAN_AUTO;
+static char force_bios[16];
+static char force_product[16];
+static unsigned int prev_interval;
+static struct thermal_zone_device *thz_dev;
+static struct thermal_cooling_device *cl_dev;
+static struct platform_device *acerhdf_dev;
+
+module_param(kernelmode, uint, 0);
+MODULE_PARM_DESC(kernelmode, "Kernel mode fan control on / off");
+module_param(interval, uint, 0600);
+MODULE_PARM_DESC(interval, "Polling interval of temperature check");
+module_param(fanon, uint, 0600);
+MODULE_PARM_DESC(fanon, "Turn the fan on above this temperature");
+module_param(fanoff, uint, 0600);
+MODULE_PARM_DESC(fanoff, "Turn the fan off below this temperature");
+module_param(verbose, uint, 0600);
+MODULE_PARM_DESC(verbose, "Enable verbose dmesg output");
+module_param_string(force_bios, force_bios, 16, 0);
+MODULE_PARM_DESC(force_bios, "Force BIOS version and omit BIOS check");
+module_param_string(force_product, force_product, 16, 0);
+MODULE_PARM_DESC(force_product, "Force BIOS product and omit BIOS check");
+
+/*
+ * cmd_off: to switch the fan completely off and check if the fan is off
+ * cmd_auto: to set the BIOS in control of the fan. The BIOS regulates then
+ * the fan speed depending on the temperature
+ */
+struct fancmd {
+ u8 cmd_off;
+ u8 cmd_auto;
+};
+
+struct manualcmd {
+ u8 mreg;
+ u8 moff;
+};
+
+/* default register and command to disable fan in manual mode */
+static const struct manualcmd mcmd = {
+ .mreg = 0x94,
+ .moff = 0xff,
+};
+
+/* BIOS settings */
+struct bios_settings {
+ const char *vendor;
+ const char *product;
+ const char *version;
+ u8 fanreg;
+ u8 tempreg;
+ struct fancmd cmd;
+ int mcmd_enable;
+};
+
+/* Register addresses and values for different BIOS versions */
+static const struct bios_settings bios_tbl[] = {
+ /* AOA110 */
+ {"Acer", "AOA110", "v0.3109", 0x55, 0x58, {0x1f, 0x00}, 0},
+ {"Acer", "AOA110", "v0.3114", 0x55, 0x58, {0x1f, 0x00}, 0},
+ {"Acer", "AOA110", "v0.3301", 0x55, 0x58, {0xaf, 0x00}, 0},
+ {"Acer", "AOA110", "v0.3304", 0x55, 0x58, {0xaf, 0x00}, 0},
+ {"Acer", "AOA110", "v0.3305", 0x55, 0x58, {0xaf, 0x00}, 0},
+ {"Acer", "AOA110", "v0.3307", 0x55, 0x58, {0xaf, 0x00}, 0},
+ {"Acer", "AOA110", "v0.3308", 0x55, 0x58, {0x21, 0x00}, 0},
+ {"Acer", "AOA110", "v0.3309", 0x55, 0x58, {0x21, 0x00}, 0},
+ {"Acer", "AOA110", "v0.3310", 0x55, 0x58, {0x21, 0x00}, 0},
+ /* AOA150 */
+ {"Acer", "AOA150", "v0.3114", 0x55, 0x58, {0x1f, 0x00}, 0},
+ {"Acer", "AOA150", "v0.3301", 0x55, 0x58, {0x20, 0x00}, 0},
+ {"Acer", "AOA150", "v0.3304", 0x55, 0x58, {0x20, 0x00}, 0},
+ {"Acer", "AOA150", "v0.3305", 0x55, 0x58, {0x20, 0x00}, 0},
+ {"Acer", "AOA150", "v0.3307", 0x55, 0x58, {0x20, 0x00}, 0},
+ {"Acer", "AOA150", "v0.3308", 0x55, 0x58, {0x20, 0x00}, 0},
+ {"Acer", "AOA150", "v0.3309", 0x55, 0x58, {0x20, 0x00}, 0},
+ {"Acer", "AOA150", "v0.3310", 0x55, 0x58, {0x20, 0x00}, 0},
+ /* LT1005u */
+ {"Acer", "LT-10Q", "v0.3310", 0x55, 0x58, {0x20, 0x00}, 0},
+ /* Acer 1410 */
+ {"Acer", "Aspire 1410", "v0.3108", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1410", "v0.3113", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1410", "v0.3115", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1410", "v0.3117", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1410", "v0.3119", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1410", "v0.3120", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1410", "v1.3204", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1410", "v1.3303", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1410", "v1.3308", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1410", "v1.3310", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1410", "v1.3314", 0x55, 0x58, {0x9e, 0x00}, 0},
+ /* Acer 1810xx */
+ {"Acer", "Aspire 1810TZ", "v0.3108", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810T", "v0.3108", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810TZ", "v0.3113", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810T", "v0.3113", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810TZ", "v0.3115", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810T", "v0.3115", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810TZ", "v0.3117", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810T", "v0.3117", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810TZ", "v0.3119", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810T", "v0.3119", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810TZ", "v0.3120", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810T", "v0.3120", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810TZ", "v1.3204", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810T", "v1.3204", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810TZ", "v1.3303", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810T", "v1.3303", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810TZ", "v1.3308", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810T", "v1.3308", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810TZ", "v1.3310", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810T", "v1.3310", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810TZ", "v1.3314", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1810T", "v1.3314", 0x55, 0x58, {0x9e, 0x00}, 0},
+ /* Acer 5755G */
+ {"Acer", "Aspire 5755G", "V1.20", 0xab, 0xb4, {0x00, 0x08}, 0},
+ {"Acer", "Aspire 5755G", "V1.21", 0xab, 0xb3, {0x00, 0x08}, 0},
+ /* Acer 521 */
+ {"Acer", "AO521", "V1.11", 0x55, 0x58, {0x1f, 0x00}, 0},
+ /* Acer 531 */
+ {"Acer", "AO531h", "v0.3104", 0x55, 0x58, {0x20, 0x00}, 0},
+ {"Acer", "AO531h", "v0.3201", 0x55, 0x58, {0x20, 0x00}, 0},
+ {"Acer", "AO531h", "v0.3304", 0x55, 0x58, {0x20, 0x00}, 0},
+ /* Acer 751 */
+ {"Acer", "AO751h", "V0.3206", 0x55, 0x58, {0x21, 0x00}, 0},
+ {"Acer", "AO751h", "V0.3212", 0x55, 0x58, {0x21, 0x00}, 0},
+ /* Acer 753 */
+ {"Acer", "Aspire One 753", "V1.24", 0x93, 0xac, {0x14, 0x04}, 1},
+ /* Acer 1825 */
+ {"Acer", "Aspire 1825PTZ", "V1.3118", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Acer", "Aspire 1825PTZ", "V1.3127", 0x55, 0x58, {0x9e, 0x00}, 0},
+ /* Acer Extensa 5420 */
+ {"Acer", "Extensa 5420", "V1.17", 0x93, 0xac, {0x14, 0x04}, 1},
+ /* Acer Aspire 5315 */
+ {"Acer", "Aspire 5315", "V1.19", 0x93, 0xac, {0x14, 0x04}, 1},
+ /* Acer Aspire 5739 */
+ {"Acer", "Aspire 5739G", "V1.3311", 0x55, 0x58, {0x20, 0x00}, 0},
+ /* Acer TravelMate 7730 */
+ {"Acer", "TravelMate 7730G", "v0.3509", 0x55, 0x58, {0xaf, 0x00}, 0},
+ /* Acer TravelMate TM8573T */
+ {"Acer", "TM8573T", "V1.13", 0x93, 0xa8, {0x14, 0x04}, 1},
+ /* Gateway */
+ {"Gateway", "AOA110", "v0.3103", 0x55, 0x58, {0x21, 0x00}, 0},
+ {"Gateway", "AOA150", "v0.3103", 0x55, 0x58, {0x20, 0x00}, 0},
+ {"Gateway", "LT31", "v1.3103", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Gateway", "LT31", "v1.3201", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Gateway", "LT31", "v1.3302", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Gateway", "LT31", "v1.3303t", 0x55, 0x58, {0x9e, 0x00}, 0},
+ /* Packard Bell */
+ {"Packard Bell", "DOA150", "v0.3104", 0x55, 0x58, {0x21, 0x00}, 0},
+ {"Packard Bell", "DOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00}, 0},
+ {"Packard Bell", "AOA110", "v0.3105", 0x55, 0x58, {0x21, 0x00}, 0},
+ {"Packard Bell", "AOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00}, 0},
+ {"Packard Bell", "ENBFT", "V1.3118", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "ENBFT", "V1.3127", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "DOTMU", "v1.3303", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "DOTMU", "v0.3120", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "DOTMU", "v0.3108", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "DOTMU", "v0.3113", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "DOTMU", "v0.3115", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "DOTMU", "v0.3117", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "DOTMU", "v0.3119", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "DOTMU", "v1.3204", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "DOTMA", "v1.3201", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "DOTMA", "v1.3302", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "DOTMA", "v1.3303t", 0x55, 0x58, {0x9e, 0x00}, 0},
+ {"Packard Bell", "DOTVR46", "v1.3308", 0x55, 0x58, {0x9e, 0x00}, 0},
+ /* pewpew-terminator */
+ {"", "", "", 0, 0, {0, 0}, 0}
+};
+
+static const struct bios_settings *bios_cfg __read_mostly;
+
+/*
+ * this struct is used to instruct thermal layer to use bang_bang instead of
+ * default governor for acerhdf
+ */
+static struct thermal_zone_params acerhdf_zone_params = {
+ .governor_name = "bang_bang",
+};
+
+static int acerhdf_get_temp(int *temp)
+{
+ u8 read_temp;
+
+ if (ec_read(bios_cfg->tempreg, &read_temp))
+ return -EINVAL;
+
+ *temp = read_temp * 1000;
+
+ return 0;
+}
+
+static int acerhdf_get_fanstate(int *state)
+{
+ u8 fan;
+
+ if (ec_read(bios_cfg->fanreg, &fan))
+ return -EINVAL;
+
+ if (fan != bios_cfg->cmd.cmd_off)
+ *state = ACERHDF_FAN_AUTO;
+ else
+ *state = ACERHDF_FAN_OFF;
+
+ return 0;
+}
+
+static void acerhdf_change_fanstate(int state)
+{
+ unsigned char cmd;
+
+ if (verbose)
+ pr_notice("fan %s\n", state == ACERHDF_FAN_OFF ? "OFF" : "ON");
+
+ if ((state != ACERHDF_FAN_OFF) && (state != ACERHDF_FAN_AUTO)) {
+ pr_err("invalid fan state %d requested, setting to auto!\n",
+ state);
+ state = ACERHDF_FAN_AUTO;
+ }
+
+ cmd = (state == ACERHDF_FAN_OFF) ? bios_cfg->cmd.cmd_off
+ : bios_cfg->cmd.cmd_auto;
+ fanstate = state;
+
+ ec_write(bios_cfg->fanreg, cmd);
+
+ if (bios_cfg->mcmd_enable && state == ACERHDF_FAN_OFF) {
+ if (verbose)
+ pr_notice("turning off fan manually\n");
+ ec_write(mcmd.mreg, mcmd.moff);
+ }
+}
+
+static void acerhdf_check_param(struct thermal_zone_device *thermal)
+{
+ if (fanon > ACERHDF_MAX_FANON) {
+ pr_err("fanon temperature too high, set to %d\n",
+ ACERHDF_MAX_FANON);
+ fanon = ACERHDF_MAX_FANON;
+ }
+
+ if (kernelmode && prev_interval != interval) {
+ if (interval > ACERHDF_MAX_INTERVAL) {
+ pr_err("interval too high, set to %d\n",
+ ACERHDF_MAX_INTERVAL);
+ interval = ACERHDF_MAX_INTERVAL;
+ }
+ if (verbose)
+ pr_notice("interval changed to: %d\n", interval);
+ thermal->polling_delay = interval*1000;
+ prev_interval = interval;
+ }
+}
+
+/*
+ * This is the thermal zone callback which does the delayed polling of the fan
+ * state. We do check /sysfs-originating settings here in acerhdf_check_param()
+ * as late as the polling interval is since we can't do that in the respective
+ * accessors of the module parameters.
+ */
+static int acerhdf_get_ec_temp(struct thermal_zone_device *thermal,
+ unsigned long *t)
+{
+ int temp, err = 0;
+
+ acerhdf_check_param(thermal);
+
+ err = acerhdf_get_temp(&temp);
+ if (err)
+ return err;
+
+ if (verbose)
+ pr_notice("temp %d\n", temp);
+
+ *t = temp;
+ return 0;
+}
+
+static int acerhdf_bind(struct thermal_zone_device *thermal,
+ struct thermal_cooling_device *cdev)
+{
+ /* if the cooling device is the one from acerhdf bind it */
+ if (cdev != cl_dev)
+ return 0;
+
+ if (thermal_zone_bind_cooling_device(thermal, 0, cdev,
+ THERMAL_NO_LIMIT, THERMAL_NO_LIMIT)) {
+ pr_err("error binding cooling dev\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int acerhdf_unbind(struct thermal_zone_device *thermal,
+ struct thermal_cooling_device *cdev)
+{
+ if (cdev != cl_dev)
+ return 0;
+
+ if (thermal_zone_unbind_cooling_device(thermal, 0, cdev)) {
+ pr_err("error unbinding cooling dev\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static inline void acerhdf_revert_to_bios_mode(void)
+{
+ acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
+ kernelmode = 0;
+ if (thz_dev)
+ thz_dev->polling_delay = 0;
+ pr_notice("kernel mode fan control OFF\n");
+}
+static inline void acerhdf_enable_kernelmode(void)
+{
+ kernelmode = 1;
+
+ thz_dev->polling_delay = interval*1000;
+ thermal_zone_device_update(thz_dev);
+ pr_notice("kernel mode fan control ON\n");
+}
+
+static int acerhdf_get_mode(struct thermal_zone_device *thermal,
+ enum thermal_device_mode *mode)
+{
+ if (verbose)
+ pr_notice("kernel mode fan control %d\n", kernelmode);
+
+ *mode = (kernelmode) ? THERMAL_DEVICE_ENABLED
+ : THERMAL_DEVICE_DISABLED;
+
+ return 0;
+}
+
+/*
+ * set operation mode;
+ * enabled: the thermal layer of the kernel takes care about
+ * the temperature and the fan.
+ * disabled: the BIOS takes control of the fan.
+ */
+static int acerhdf_set_mode(struct thermal_zone_device *thermal,
+ enum thermal_device_mode mode)
+{
+ if (mode == THERMAL_DEVICE_DISABLED && kernelmode)
+ acerhdf_revert_to_bios_mode();
+ else if (mode == THERMAL_DEVICE_ENABLED && !kernelmode)
+ acerhdf_enable_kernelmode();
+
+ return 0;
+}
+
+static int acerhdf_get_trip_type(struct thermal_zone_device *thermal, int trip,
+ enum thermal_trip_type *type)
+{
+ if (trip == 0)
+ *type = THERMAL_TRIP_ACTIVE;
+ else if (trip == 1)
+ *type = THERMAL_TRIP_CRITICAL;
+ else
+ return -EINVAL;
+
+ return 0;
+}
+
+static int acerhdf_get_trip_hyst(struct thermal_zone_device *thermal, int trip,
+ unsigned long *temp)
+{
+ if (trip != 0)
+ return -EINVAL;
+
+ *temp = fanon - fanoff;
+
+ return 0;
+}
+
+static int acerhdf_get_trip_temp(struct thermal_zone_device *thermal, int trip,
+ unsigned long *temp)
+{
+ if (trip == 0)
+ *temp = fanon;
+ else if (trip == 1)
+ *temp = ACERHDF_TEMP_CRIT;
+ else
+ return -EINVAL;
+
+ return 0;
+}
+
+static int acerhdf_get_crit_temp(struct thermal_zone_device *thermal,
+ unsigned long *temperature)
+{
+ *temperature = ACERHDF_TEMP_CRIT;
+ return 0;
+}
+
+/* bind callback functions to thermalzone */
+static struct thermal_zone_device_ops acerhdf_dev_ops = {
+ .bind = acerhdf_bind,
+ .unbind = acerhdf_unbind,
+ .get_temp = acerhdf_get_ec_temp,
+ .get_mode = acerhdf_get_mode,
+ .set_mode = acerhdf_set_mode,
+ .get_trip_type = acerhdf_get_trip_type,
+ .get_trip_hyst = acerhdf_get_trip_hyst,
+ .get_trip_temp = acerhdf_get_trip_temp,
+ .get_crit_temp = acerhdf_get_crit_temp,
+};
+
+
+/*
+ * cooling device callback functions
+ * get maximal fan cooling state
+ */
+static int acerhdf_get_max_state(struct thermal_cooling_device *cdev,
+ unsigned long *state)
+{
+ *state = 1;
+
+ return 0;
+}
+
+static int acerhdf_get_cur_state(struct thermal_cooling_device *cdev,
+ unsigned long *state)
+{
+ int err = 0, tmp;
+
+ err = acerhdf_get_fanstate(&tmp);
+ if (err)
+ return err;
+
+ *state = (tmp == ACERHDF_FAN_AUTO) ? 1 : 0;
+ return 0;
+}
+
+/* change current fan state - is overwritten when running in kernel mode */
+static int acerhdf_set_cur_state(struct thermal_cooling_device *cdev,
+ unsigned long state)
+{
+ int cur_temp, cur_state, err = 0;
+
+ if (!kernelmode)
+ return 0;
+
+ err = acerhdf_get_temp(&cur_temp);
+ if (err) {
+ pr_err("error reading temperature, hand off control to BIOS\n");
+ goto err_out;
+ }
+
+ err = acerhdf_get_fanstate(&cur_state);
+ if (err) {
+ pr_err("error reading fan state, hand off control to BIOS\n");
+ goto err_out;
+ }
+
+ if (state == 0) {
+ if (cur_state == ACERHDF_FAN_AUTO)
+ acerhdf_change_fanstate(ACERHDF_FAN_OFF);
+ } else {
+ if (cur_state == ACERHDF_FAN_OFF)
+ acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
+ }
+ return 0;
+
+err_out:
+ acerhdf_revert_to_bios_mode();
+ return -EINVAL;
+}
+
+/* bind fan callbacks to fan device */
+static struct thermal_cooling_device_ops acerhdf_cooling_ops = {
+ .get_max_state = acerhdf_get_max_state,
+ .get_cur_state = acerhdf_get_cur_state,
+ .set_cur_state = acerhdf_set_cur_state,
+};
+
+/* suspend / resume functionality */
+static int acerhdf_suspend(struct device *dev)
+{
+ if (kernelmode)
+ acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
+
+ if (verbose)
+ pr_notice("going suspend\n");
+
+ return 0;
+}
+
+static int acerhdf_probe(struct platform_device *device)
+{
+ return 0;
+}
+
+static int acerhdf_remove(struct platform_device *device)
+{
+ return 0;
+}
+
+static const struct dev_pm_ops acerhdf_pm_ops = {
+ .suspend = acerhdf_suspend,
+ .freeze = acerhdf_suspend,
+};
+
+static struct platform_driver acerhdf_driver = {
+ .driver = {
+ .name = "acerhdf",
+ .pm = &acerhdf_pm_ops,
+ },
+ .probe = acerhdf_probe,
+ .remove = acerhdf_remove,
+};
+
+/* checks if str begins with start */
+static int str_starts_with(const char *str, const char *start)
+{
+ unsigned long str_len = 0, start_len = 0;
+
+ str_len = strlen(str);
+ start_len = strlen(start);
+
+ if (str_len >= start_len &&
+ !strncmp(str, start, start_len))
+ return 1;
+
+ return 0;
+}
+
+/* check hardware */
+static int acerhdf_check_hardware(void)
+{
+ char const *vendor, *version, *product;
+ const struct bios_settings *bt = NULL;
+
+ /* get BIOS data */
+ vendor = dmi_get_system_info(DMI_SYS_VENDOR);
+ version = dmi_get_system_info(DMI_BIOS_VERSION);
+ product = dmi_get_system_info(DMI_PRODUCT_NAME);
+
+ if (!vendor || !version || !product) {
+ pr_err("error getting hardware information\n");
+ return -EINVAL;
+ }
+
+ pr_info("Acer Aspire One Fan driver, v.%s\n", DRV_VER);
+
+ if (force_bios[0]) {
+ version = force_bios;
+ pr_info("forcing BIOS version: %s\n", version);
+ kernelmode = 0;
+ }
+
+ if (force_product[0]) {
+ product = force_product;
+ pr_info("forcing BIOS product: %s\n", product);
+ kernelmode = 0;
+ }
+
+ if (verbose)
+ pr_info("BIOS info: %s %s, product: %s\n",
+ vendor, version, product);
+
+ /* search BIOS version and vendor in BIOS settings table */
+ for (bt = bios_tbl; bt->vendor[0]; bt++) {
+ /*
+ * check if actual hardware BIOS vendor, product and version
+ * IDs start with the strings of BIOS table entry
+ */
+ if (str_starts_with(vendor, bt->vendor) &&
+ str_starts_with(product, bt->product) &&
+ str_starts_with(version, bt->version)) {
+ bios_cfg = bt;
+ break;
+ }
+ }
+
+ if (!bios_cfg) {
+ pr_err("unknown (unsupported) BIOS version %s/%s/%s, please report, aborting!\n",
+ vendor, product, version);
+ return -EINVAL;
+ }
+
+ /*
+ * if started with kernel mode off, prevent the kernel from switching
+ * off the fan
+ */
+ if (!kernelmode) {
+ pr_notice("Fan control off, to enable do:\n");
+ pr_notice("echo -n \"enabled\" > /sys/class/thermal/thermal_zone0/mode\n");
+ }
+
+ return 0;
+}
+
+static int acerhdf_register_platform(void)
+{
+ int err = 0;
+
+ err = platform_driver_register(&acerhdf_driver);
+ if (err)
+ return err;
+
+ acerhdf_dev = platform_device_alloc("acerhdf", -1);
+ if (!acerhdf_dev) {
+ err = -ENOMEM;
+ goto err_device_alloc;
+ }
+ err = platform_device_add(acerhdf_dev);
+ if (err)
+ goto err_device_add;
+
+ return 0;
+
+err_device_add:
+ platform_device_put(acerhdf_dev);
+err_device_alloc:
+ platform_driver_unregister(&acerhdf_driver);
+ return err;
+}
+
+static void acerhdf_unregister_platform(void)
+{
+ platform_device_unregister(acerhdf_dev);
+ platform_driver_unregister(&acerhdf_driver);
+}
+
+static int acerhdf_register_thermal(void)
+{
+ cl_dev = thermal_cooling_device_register("acerhdf-fan", NULL,
+ &acerhdf_cooling_ops);
+
+ if (IS_ERR(cl_dev))
+ return -EINVAL;
+
+ thz_dev = thermal_zone_device_register("acerhdf", 2, 0, NULL,
+ &acerhdf_dev_ops,
+ &acerhdf_zone_params, 0,
+ (kernelmode) ? interval*1000 : 0);
+ if (IS_ERR(thz_dev))
+ return -EINVAL;
+
+ if (strcmp(thz_dev->governor->name,
+ acerhdf_zone_params.governor_name)) {
+ pr_err("Didn't get thermal governor %s, perhaps not compiled into thermal subsystem.\n",
+ acerhdf_zone_params.governor_name);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void acerhdf_unregister_thermal(void)
+{
+ if (cl_dev) {
+ thermal_cooling_device_unregister(cl_dev);
+ cl_dev = NULL;
+ }
+
+ if (thz_dev) {
+ thermal_zone_device_unregister(thz_dev);
+ thz_dev = NULL;
+ }
+}
+
+static int __init acerhdf_init(void)
+{
+ int err = 0;
+
+ err = acerhdf_check_hardware();
+ if (err)
+ goto out_err;
+
+ err = acerhdf_register_platform();
+ if (err)
+ goto out_err;
+
+ err = acerhdf_register_thermal();
+ if (err)
+ goto err_unreg;
+
+ return 0;
+
+err_unreg:
+ acerhdf_unregister_thermal();
+ acerhdf_unregister_platform();
+
+out_err:
+ return err;
+}
+
+static void __exit acerhdf_exit(void)
+{
+ acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
+ acerhdf_unregister_thermal();
+ acerhdf_unregister_platform();
+}
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Peter Feuerer");
+MODULE_DESCRIPTION("Aspire One temperature and fan driver");
+MODULE_ALIAS("dmi:*:*Acer*:pnAOA*:");
+MODULE_ALIAS("dmi:*:*Acer*:pnAO751h*:");
+MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1410*:");
+MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1810*:");
+MODULE_ALIAS("dmi:*:*Acer*:pnAspire*5755G:");
+MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1825PTZ:");
+MODULE_ALIAS("dmi:*:*Acer*:pnAO521*:");
+MODULE_ALIAS("dmi:*:*Acer*:pnAO531*:");
+MODULE_ALIAS("dmi:*:*Acer*:pnAspire*5739G:");
+MODULE_ALIAS("dmi:*:*Acer*:pnAspire*One*753:");
+MODULE_ALIAS("dmi:*:*Acer*:pnAspire*5315:");
+MODULE_ALIAS("dmi:*:*Acer*:TravelMate*7730G:");
+MODULE_ALIAS("dmi:*:*Acer*:TM8573T:");
+MODULE_ALIAS("dmi:*:*Gateway*:pnAOA*:");
+MODULE_ALIAS("dmi:*:*Gateway*:pnLT31*:");
+MODULE_ALIAS("dmi:*:*Packard*Bell*:pnAOA*:");
+MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOA*:");
+MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTMU*:");
+MODULE_ALIAS("dmi:*:*Packard*Bell*:pnENBFT*:");
+MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTMA*:");
+MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTVR46*:");
+MODULE_ALIAS("dmi:*:*Acer*:pnExtensa 5420*:");
+
+module_init(acerhdf_init);
+module_exit(acerhdf_exit);
diff --git a/drivers/platform/x86/alienware-wmi.c b/drivers/platform/x86/alienware-wmi.c
new file mode 100644
index 000000000..1e1e59423
--- /dev/null
+++ b/drivers/platform/x86/alienware-wmi.c
@@ -0,0 +1,639 @@
+/*
+ * Alienware AlienFX control
+ *
+ * Copyright (C) 2014 Dell Inc <mario_limonciello@dell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/acpi.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/dmi.h>
+#include <linux/acpi.h>
+#include <linux/leds.h>
+
+#define LEGACY_CONTROL_GUID "A90597CE-A997-11DA-B012-B622A1EF5492"
+#define LEGACY_POWER_CONTROL_GUID "A80593CE-A997-11DA-B012-B622A1EF5492"
+#define WMAX_CONTROL_GUID "A70591CE-A997-11DA-B012-B622A1EF5492"
+
+#define WMAX_METHOD_HDMI_SOURCE 0x1
+#define WMAX_METHOD_HDMI_STATUS 0x2
+#define WMAX_METHOD_BRIGHTNESS 0x3
+#define WMAX_METHOD_ZONE_CONTROL 0x4
+#define WMAX_METHOD_HDMI_CABLE 0x5
+
+MODULE_AUTHOR("Mario Limonciello <mario_limonciello@dell.com>");
+MODULE_DESCRIPTION("Alienware special feature control");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("wmi:" LEGACY_CONTROL_GUID);
+MODULE_ALIAS("wmi:" WMAX_CONTROL_GUID);
+
+enum INTERFACE_FLAGS {
+ LEGACY,
+ WMAX,
+};
+
+enum LEGACY_CONTROL_STATES {
+ LEGACY_RUNNING = 1,
+ LEGACY_BOOTING = 0,
+ LEGACY_SUSPEND = 3,
+};
+
+enum WMAX_CONTROL_STATES {
+ WMAX_RUNNING = 0xFF,
+ WMAX_BOOTING = 0,
+ WMAX_SUSPEND = 3,
+};
+
+struct quirk_entry {
+ u8 num_zones;
+ u8 hdmi_mux;
+};
+
+static struct quirk_entry *quirks;
+
+static struct quirk_entry quirk_unknown = {
+ .num_zones = 2,
+ .hdmi_mux = 0,
+};
+
+static struct quirk_entry quirk_x51_family = {
+ .num_zones = 3,
+ .hdmi_mux = 0.
+};
+
+static struct quirk_entry quirk_asm100 = {
+ .num_zones = 2,
+ .hdmi_mux = 1,
+};
+
+static int __init dmi_matched(const struct dmi_system_id *dmi)
+{
+ quirks = dmi->driver_data;
+ return 1;
+}
+
+static const struct dmi_system_id alienware_quirks[] __initconst = {
+ {
+ .callback = dmi_matched,
+ .ident = "Alienware X51 R1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51"),
+ },
+ .driver_data = &quirk_x51_family,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Alienware X51 R2",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51 R2"),
+ },
+ .driver_data = &quirk_x51_family,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Alienware ASM100",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ASM100"),
+ },
+ .driver_data = &quirk_asm100,
+ },
+ {}
+};
+
+struct color_platform {
+ u8 blue;
+ u8 green;
+ u8 red;
+} __packed;
+
+struct platform_zone {
+ u8 location;
+ struct device_attribute *attr;
+ struct color_platform colors;
+};
+
+struct wmax_brightness_args {
+ u32 led_mask;
+ u32 percentage;
+};
+
+struct hdmi_args {
+ u8 arg;
+};
+
+struct legacy_led_args {
+ struct color_platform colors;
+ u8 brightness;
+ u8 state;
+} __packed;
+
+struct wmax_led_args {
+ u32 led_mask;
+ struct color_platform colors;
+ u8 state;
+} __packed;
+
+static struct platform_device *platform_device;
+static struct device_attribute *zone_dev_attrs;
+static struct attribute **zone_attrs;
+static struct platform_zone *zone_data;
+
+static struct platform_driver platform_driver = {
+ .driver = {
+ .name = "alienware-wmi",
+ }
+};
+
+static struct attribute_group zone_attribute_group = {
+ .name = "rgb_zones",
+};
+
+static u8 interface;
+static u8 lighting_control_state;
+static u8 global_brightness;
+
+/*
+ * Helpers used for zone control
+*/
+static int parse_rgb(const char *buf, struct platform_zone *zone)
+{
+ long unsigned int rgb;
+ int ret;
+ union color_union {
+ struct color_platform cp;
+ int package;
+ } repackager;
+
+ ret = kstrtoul(buf, 16, &rgb);
+ if (ret)
+ return ret;
+
+ /* RGB triplet notation is 24-bit hexadecimal */
+ if (rgb > 0xFFFFFF)
+ return -EINVAL;
+
+ repackager.package = rgb & 0x0f0f0f0f;
+ pr_debug("alienware-wmi: r: %d g:%d b: %d\n",
+ repackager.cp.red, repackager.cp.green, repackager.cp.blue);
+ zone->colors = repackager.cp;
+ return 0;
+}
+
+static struct platform_zone *match_zone(struct device_attribute *attr)
+{
+ int i;
+ for (i = 0; i < quirks->num_zones; i++) {
+ if ((struct device_attribute *)zone_data[i].attr == attr) {
+ pr_debug("alienware-wmi: matched zone location: %d\n",
+ zone_data[i].location);
+ return &zone_data[i];
+ }
+ }
+ return NULL;
+}
+
+/*
+ * Individual RGB zone control
+*/
+static int alienware_update_led(struct platform_zone *zone)
+{
+ int method_id;
+ acpi_status status;
+ char *guid;
+ struct acpi_buffer input;
+ struct legacy_led_args legacy_args;
+ struct wmax_led_args wmax_args;
+ if (interface == WMAX) {
+ wmax_args.led_mask = 1 << zone->location;
+ wmax_args.colors = zone->colors;
+ wmax_args.state = lighting_control_state;
+ guid = WMAX_CONTROL_GUID;
+ method_id = WMAX_METHOD_ZONE_CONTROL;
+
+ input.length = (acpi_size) sizeof(wmax_args);
+ input.pointer = &wmax_args;
+ } else {
+ legacy_args.colors = zone->colors;
+ legacy_args.brightness = global_brightness;
+ legacy_args.state = 0;
+ if (lighting_control_state == LEGACY_BOOTING ||
+ lighting_control_state == LEGACY_SUSPEND) {
+ guid = LEGACY_POWER_CONTROL_GUID;
+ legacy_args.state = lighting_control_state;
+ } else
+ guid = LEGACY_CONTROL_GUID;
+ method_id = zone->location + 1;
+
+ input.length = (acpi_size) sizeof(legacy_args);
+ input.pointer = &legacy_args;
+ }
+ pr_debug("alienware-wmi: guid %s method %d\n", guid, method_id);
+
+ status = wmi_evaluate_method(guid, 1, method_id, &input, NULL);
+ if (ACPI_FAILURE(status))
+ pr_err("alienware-wmi: zone set failure: %u\n", status);
+ return ACPI_FAILURE(status);
+}
+
+static ssize_t zone_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct platform_zone *target_zone;
+ target_zone = match_zone(attr);
+ if (target_zone == NULL)
+ return sprintf(buf, "red: -1, green: -1, blue: -1\n");
+ return sprintf(buf, "red: %d, green: %d, blue: %d\n",
+ target_zone->colors.red,
+ target_zone->colors.green, target_zone->colors.blue);
+
+}
+
+static ssize_t zone_set(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct platform_zone *target_zone;
+ int ret;
+ target_zone = match_zone(attr);
+ if (target_zone == NULL) {
+ pr_err("alienware-wmi: invalid target zone\n");
+ return 1;
+ }
+ ret = parse_rgb(buf, target_zone);
+ if (ret)
+ return ret;
+ ret = alienware_update_led(target_zone);
+ return ret ? ret : count;
+}
+
+/*
+ * LED Brightness (Global)
+*/
+static int wmax_brightness(int brightness)
+{
+ acpi_status status;
+ struct acpi_buffer input;
+ struct wmax_brightness_args args = {
+ .led_mask = 0xFF,
+ .percentage = brightness,
+ };
+ input.length = (acpi_size) sizeof(args);
+ input.pointer = &args;
+ status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1,
+ WMAX_METHOD_BRIGHTNESS, &input, NULL);
+ if (ACPI_FAILURE(status))
+ pr_err("alienware-wmi: brightness set failure: %u\n", status);
+ return ACPI_FAILURE(status);
+}
+
+static void global_led_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ int ret;
+ global_brightness = brightness;
+ if (interface == WMAX)
+ ret = wmax_brightness(brightness);
+ else
+ ret = alienware_update_led(&zone_data[0]);
+ if (ret)
+ pr_err("LED brightness update failed\n");
+}
+
+static enum led_brightness global_led_get(struct led_classdev *led_cdev)
+{
+ return global_brightness;
+}
+
+static struct led_classdev global_led = {
+ .brightness_set = global_led_set,
+ .brightness_get = global_led_get,
+ .name = "alienware::global_brightness",
+};
+
+/*
+ * Lighting control state device attribute (Global)
+*/
+static ssize_t show_control_state(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ if (lighting_control_state == LEGACY_BOOTING)
+ return scnprintf(buf, PAGE_SIZE, "[booting] running suspend\n");
+ else if (lighting_control_state == LEGACY_SUSPEND)
+ return scnprintf(buf, PAGE_SIZE, "booting running [suspend]\n");
+ return scnprintf(buf, PAGE_SIZE, "booting [running] suspend\n");
+}
+
+static ssize_t store_control_state(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ long unsigned int val;
+ if (strcmp(buf, "booting\n") == 0)
+ val = LEGACY_BOOTING;
+ else if (strcmp(buf, "suspend\n") == 0)
+ val = LEGACY_SUSPEND;
+ else if (interface == LEGACY)
+ val = LEGACY_RUNNING;
+ else
+ val = WMAX_RUNNING;
+ lighting_control_state = val;
+ pr_debug("alienware-wmi: updated control state to %d\n",
+ lighting_control_state);
+ return count;
+}
+
+static DEVICE_ATTR(lighting_control_state, 0644, show_control_state,
+ store_control_state);
+
+static int alienware_zone_init(struct platform_device *dev)
+{
+ int i;
+ char buffer[10];
+ char *name;
+
+ if (interface == WMAX) {
+ lighting_control_state = WMAX_RUNNING;
+ } else if (interface == LEGACY) {
+ lighting_control_state = LEGACY_RUNNING;
+ }
+ global_led.max_brightness = 0x0F;
+ global_brightness = global_led.max_brightness;
+
+ /*
+ * - zone_dev_attrs num_zones + 1 is for individual zones and then
+ * null terminated
+ * - zone_attrs num_zones + 2 is for all attrs in zone_dev_attrs +
+ * the lighting control + null terminated
+ * - zone_data num_zones is for the distinct zones
+ */
+ zone_dev_attrs =
+ kzalloc(sizeof(struct device_attribute) * (quirks->num_zones + 1),
+ GFP_KERNEL);
+ if (!zone_dev_attrs)
+ return -ENOMEM;
+
+ zone_attrs =
+ kzalloc(sizeof(struct attribute *) * (quirks->num_zones + 2),
+ GFP_KERNEL);
+ if (!zone_attrs)
+ return -ENOMEM;
+
+ zone_data =
+ kzalloc(sizeof(struct platform_zone) * (quirks->num_zones),
+ GFP_KERNEL);
+ if (!zone_data)
+ return -ENOMEM;
+
+ for (i = 0; i < quirks->num_zones; i++) {
+ sprintf(buffer, "zone%02X", i);
+ name = kstrdup(buffer, GFP_KERNEL);
+ if (name == NULL)
+ return 1;
+ sysfs_attr_init(&zone_dev_attrs[i].attr);
+ zone_dev_attrs[i].attr.name = name;
+ zone_dev_attrs[i].attr.mode = 0644;
+ zone_dev_attrs[i].show = zone_show;
+ zone_dev_attrs[i].store = zone_set;
+ zone_data[i].location = i;
+ zone_attrs[i] = &zone_dev_attrs[i].attr;
+ zone_data[i].attr = &zone_dev_attrs[i];
+ }
+ zone_attrs[quirks->num_zones] = &dev_attr_lighting_control_state.attr;
+ zone_attribute_group.attrs = zone_attrs;
+
+ led_classdev_register(&dev->dev, &global_led);
+
+ return sysfs_create_group(&dev->dev.kobj, &zone_attribute_group);
+}
+
+static void alienware_zone_exit(struct platform_device *dev)
+{
+ sysfs_remove_group(&dev->dev.kobj, &zone_attribute_group);
+ led_classdev_unregister(&global_led);
+ if (zone_dev_attrs) {
+ int i;
+ for (i = 0; i < quirks->num_zones; i++)
+ kfree(zone_dev_attrs[i].attr.name);
+ }
+ kfree(zone_dev_attrs);
+ kfree(zone_data);
+ kfree(zone_attrs);
+}
+
+/*
+ The HDMI mux sysfs node indicates the status of the HDMI input mux.
+ It can toggle between standard system GPU output and HDMI input.
+*/
+static acpi_status alienware_hdmi_command(struct hdmi_args *in_args,
+ u32 command, int *out_data)
+{
+ acpi_status status;
+ union acpi_object *obj;
+ struct acpi_buffer input;
+ struct acpi_buffer output;
+
+ input.length = (acpi_size) sizeof(*in_args);
+ input.pointer = in_args;
+ if (out_data != NULL) {
+ output.length = ACPI_ALLOCATE_BUFFER;
+ output.pointer = NULL;
+ status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1,
+ command, &input, &output);
+ } else
+ status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1,
+ command, &input, NULL);
+
+ if (ACPI_SUCCESS(status) && out_data != NULL) {
+ obj = (union acpi_object *)output.pointer;
+ if (obj && obj->type == ACPI_TYPE_INTEGER)
+ *out_data = (u32) obj->integer.value;
+ }
+ return status;
+
+}
+
+static ssize_t show_hdmi_cable(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ acpi_status status;
+ u32 out_data;
+ struct hdmi_args in_args = {
+ .arg = 0,
+ };
+ status =
+ alienware_hdmi_command(&in_args, WMAX_METHOD_HDMI_CABLE,
+ (u32 *) &out_data);
+ if (ACPI_SUCCESS(status)) {
+ if (out_data == 0)
+ return scnprintf(buf, PAGE_SIZE,
+ "[unconnected] connected unknown\n");
+ else if (out_data == 1)
+ return scnprintf(buf, PAGE_SIZE,
+ "unconnected [connected] unknown\n");
+ }
+ pr_err("alienware-wmi: unknown HDMI cable status: %d\n", status);
+ return scnprintf(buf, PAGE_SIZE, "unconnected connected [unknown]\n");
+}
+
+static ssize_t show_hdmi_source(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ acpi_status status;
+ u32 out_data;
+ struct hdmi_args in_args = {
+ .arg = 0,
+ };
+ status =
+ alienware_hdmi_command(&in_args, WMAX_METHOD_HDMI_STATUS,
+ (u32 *) &out_data);
+
+ if (ACPI_SUCCESS(status)) {
+ if (out_data == 1)
+ return scnprintf(buf, PAGE_SIZE,
+ "[input] gpu unknown\n");
+ else if (out_data == 2)
+ return scnprintf(buf, PAGE_SIZE,
+ "input [gpu] unknown\n");
+ }
+ pr_err("alienware-wmi: unknown HDMI source status: %d\n", out_data);
+ return scnprintf(buf, PAGE_SIZE, "input gpu [unknown]\n");
+}
+
+static ssize_t toggle_hdmi_source(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ acpi_status status;
+ struct hdmi_args args;
+ if (strcmp(buf, "gpu\n") == 0)
+ args.arg = 1;
+ else if (strcmp(buf, "input\n") == 0)
+ args.arg = 2;
+ else
+ args.arg = 3;
+ pr_debug("alienware-wmi: setting hdmi to %d : %s", args.arg, buf);
+
+ status = alienware_hdmi_command(&args, WMAX_METHOD_HDMI_SOURCE, NULL);
+
+ if (ACPI_FAILURE(status))
+ pr_err("alienware-wmi: HDMI toggle failed: results: %u\n",
+ status);
+ return count;
+}
+
+static DEVICE_ATTR(cable, S_IRUGO, show_hdmi_cable, NULL);
+static DEVICE_ATTR(source, S_IRUGO | S_IWUSR, show_hdmi_source,
+ toggle_hdmi_source);
+
+static struct attribute *hdmi_attrs[] = {
+ &dev_attr_cable.attr,
+ &dev_attr_source.attr,
+ NULL,
+};
+
+static struct attribute_group hdmi_attribute_group = {
+ .name = "hdmi",
+ .attrs = hdmi_attrs,
+};
+
+static void remove_hdmi(struct platform_device *dev)
+{
+ if (quirks->hdmi_mux > 0)
+ sysfs_remove_group(&dev->dev.kobj, &hdmi_attribute_group);
+}
+
+static int create_hdmi(struct platform_device *dev)
+{
+ int ret;
+
+ ret = sysfs_create_group(&dev->dev.kobj, &hdmi_attribute_group);
+ if (ret)
+ goto error_create_hdmi;
+ return 0;
+
+error_create_hdmi:
+ remove_hdmi(dev);
+ return ret;
+}
+
+static int __init alienware_wmi_init(void)
+{
+ int ret;
+
+ if (wmi_has_guid(LEGACY_CONTROL_GUID))
+ interface = LEGACY;
+ else if (wmi_has_guid(WMAX_CONTROL_GUID))
+ interface = WMAX;
+ else {
+ pr_warn("alienware-wmi: No known WMI GUID found\n");
+ return -ENODEV;
+ }
+
+ dmi_check_system(alienware_quirks);
+ if (quirks == NULL)
+ quirks = &quirk_unknown;
+
+ ret = platform_driver_register(&platform_driver);
+ if (ret)
+ goto fail_platform_driver;
+ platform_device = platform_device_alloc("alienware-wmi", -1);
+ if (!platform_device) {
+ ret = -ENOMEM;
+ goto fail_platform_device1;
+ }
+ ret = platform_device_add(platform_device);
+ if (ret)
+ goto fail_platform_device2;
+
+ if (quirks->hdmi_mux > 0) {
+ ret = create_hdmi(platform_device);
+ if (ret)
+ goto fail_prep_hdmi;
+ }
+
+ ret = alienware_zone_init(platform_device);
+ if (ret)
+ goto fail_prep_zones;
+
+ return 0;
+
+fail_prep_zones:
+ alienware_zone_exit(platform_device);
+fail_prep_hdmi:
+ platform_device_del(platform_device);
+fail_platform_device2:
+ platform_device_put(platform_device);
+fail_platform_device1:
+ platform_driver_unregister(&platform_driver);
+fail_platform_driver:
+ return ret;
+}
+
+module_init(alienware_wmi_init);
+
+static void __exit alienware_wmi_exit(void)
+{
+ if (platform_device) {
+ alienware_zone_exit(platform_device);
+ remove_hdmi(platform_device);
+ platform_device_unregister(platform_device);
+ platform_driver_unregister(&platform_driver);
+ }
+}
+
+module_exit(alienware_wmi_exit);
diff --git a/drivers/platform/x86/amilo-rfkill.c b/drivers/platform/x86/amilo-rfkill.c
new file mode 100644
index 000000000..0157625cb
--- /dev/null
+++ b/drivers/platform/x86/amilo-rfkill.c
@@ -0,0 +1,182 @@
+/*
+ * Support for rfkill on some Fujitsu-Siemens Amilo laptops.
+ * Copyright 2011 Ben Hutchings.
+ *
+ * Based in part on the fsam7440 driver, which is:
+ * Copyright 2005 Alejandro Vidal Mata & Javier Vidal Mata.
+ * and on the fsaa1655g driver, which is:
+ * Copyright 2006 Martin Večeřa.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/dmi.h>
+#include <linux/i8042.h>
+#include <linux/io.h>
+#include <linux/moduleparam.h>
+#include <linux/platform_device.h>
+#include <linux/rfkill.h>
+
+/*
+ * These values were obtained from disassembling and debugging the
+ * PM.exe program installed in the Fujitsu-Siemens AMILO A1655G
+ */
+#define A1655_WIFI_COMMAND 0x10C5
+#define A1655_WIFI_ON 0x25
+#define A1655_WIFI_OFF 0x45
+
+static int amilo_a1655_rfkill_set_block(void *data, bool blocked)
+{
+ u8 param = blocked ? A1655_WIFI_OFF : A1655_WIFI_ON;
+ int rc;
+
+ i8042_lock_chip();
+ rc = i8042_command(&param, A1655_WIFI_COMMAND);
+ i8042_unlock_chip();
+ return rc;
+}
+
+static const struct rfkill_ops amilo_a1655_rfkill_ops = {
+ .set_block = amilo_a1655_rfkill_set_block
+};
+
+/*
+ * These values were obtained from disassembling the PM.exe program
+ * installed in the Fujitsu-Siemens AMILO M 7440
+ */
+#define M7440_PORT1 0x118f
+#define M7440_PORT2 0x118e
+#define M7440_RADIO_ON1 0x12
+#define M7440_RADIO_ON2 0x80
+#define M7440_RADIO_OFF1 0x10
+#define M7440_RADIO_OFF2 0x00
+
+static int amilo_m7440_rfkill_set_block(void *data, bool blocked)
+{
+ u8 val1 = blocked ? M7440_RADIO_OFF1 : M7440_RADIO_ON1;
+ u8 val2 = blocked ? M7440_RADIO_OFF2 : M7440_RADIO_ON2;
+
+ outb(val1, M7440_PORT1);
+ outb(val2, M7440_PORT2);
+
+ /* Check whether the state has changed correctly */
+ if (inb(M7440_PORT1) != val1 || inb(M7440_PORT2) != val2)
+ return -EIO;
+
+ return 0;
+}
+
+static const struct rfkill_ops amilo_m7440_rfkill_ops = {
+ .set_block = amilo_m7440_rfkill_set_block
+};
+
+static const struct dmi_system_id amilo_rfkill_id_table[] = {
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_BOARD_NAME, "AMILO A1655"),
+ },
+ .driver_data = (void *)&amilo_a1655_rfkill_ops
+ },
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_BOARD_NAME, "AMILO L1310"),
+ },
+ .driver_data = (void *)&amilo_a1655_rfkill_ops
+ },
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_BOARD_NAME, "AMILO M7440"),
+ },
+ .driver_data = (void *)&amilo_m7440_rfkill_ops
+ },
+ {}
+};
+
+static struct platform_device *amilo_rfkill_pdev;
+static struct rfkill *amilo_rfkill_dev;
+
+static int amilo_rfkill_probe(struct platform_device *device)
+{
+ int rc;
+ const struct dmi_system_id *system_id =
+ dmi_first_match(amilo_rfkill_id_table);
+
+ if (!system_id)
+ return -ENXIO;
+
+ amilo_rfkill_dev = rfkill_alloc(KBUILD_MODNAME, &device->dev,
+ RFKILL_TYPE_WLAN,
+ system_id->driver_data, NULL);
+ if (!amilo_rfkill_dev)
+ return -ENOMEM;
+
+ rc = rfkill_register(amilo_rfkill_dev);
+ if (rc)
+ goto fail;
+
+ return 0;
+
+fail:
+ rfkill_destroy(amilo_rfkill_dev);
+ return rc;
+}
+
+static int amilo_rfkill_remove(struct platform_device *device)
+{
+ rfkill_unregister(amilo_rfkill_dev);
+ rfkill_destroy(amilo_rfkill_dev);
+ return 0;
+}
+
+static struct platform_driver amilo_rfkill_driver = {
+ .driver = {
+ .name = KBUILD_MODNAME,
+ },
+ .probe = amilo_rfkill_probe,
+ .remove = amilo_rfkill_remove,
+};
+
+static int __init amilo_rfkill_init(void)
+{
+ int rc;
+
+ if (dmi_first_match(amilo_rfkill_id_table) == NULL)
+ return -ENODEV;
+
+ rc = platform_driver_register(&amilo_rfkill_driver);
+ if (rc)
+ return rc;
+
+ amilo_rfkill_pdev = platform_device_register_simple(KBUILD_MODNAME, -1,
+ NULL, 0);
+ if (IS_ERR(amilo_rfkill_pdev)) {
+ rc = PTR_ERR(amilo_rfkill_pdev);
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ platform_driver_unregister(&amilo_rfkill_driver);
+ return rc;
+}
+
+static void __exit amilo_rfkill_exit(void)
+{
+ platform_device_unregister(amilo_rfkill_pdev);
+ platform_driver_unregister(&amilo_rfkill_driver);
+}
+
+MODULE_AUTHOR("Ben Hutchings <ben@decadent.org.uk>");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(dmi, amilo_rfkill_id_table);
+
+module_init(amilo_rfkill_init);
+module_exit(amilo_rfkill_exit);
diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c
new file mode 100644
index 000000000..680871500
--- /dev/null
+++ b/drivers/platform/x86/apple-gmux.c
@@ -0,0 +1,677 @@
+/*
+ * Gmux driver for Apple laptops
+ *
+ * Copyright (C) Canonical Ltd. <seth.forshee@canonical.com>
+ * Copyright (C) 2010-2012 Andreas Heider <andreas@meetr.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/backlight.h>
+#include <linux/acpi.h>
+#include <linux/pnp.h>
+#include <linux/apple_bl.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/vga_switcheroo.h>
+#include <linux/vgaarb.h>
+#include <acpi/video.h>
+#include <asm/io.h>
+
+struct apple_gmux_data {
+ unsigned long iostart;
+ unsigned long iolen;
+ bool indexed;
+ struct mutex index_lock;
+
+ struct pci_dev *pdev;
+ struct backlight_device *bdev;
+
+ /* switcheroo data */
+ acpi_handle dhandle;
+ int gpe;
+ enum vga_switcheroo_client_id resume_client_id;
+ enum vga_switcheroo_state power_state;
+ struct completion powerchange_done;
+};
+
+static struct apple_gmux_data *apple_gmux_data;
+
+/*
+ * gmux port offsets. Many of these are not yet used, but may be in the
+ * future, and it's useful to have them documented here anyhow.
+ */
+#define GMUX_PORT_VERSION_MAJOR 0x04
+#define GMUX_PORT_VERSION_MINOR 0x05
+#define GMUX_PORT_VERSION_RELEASE 0x06
+#define GMUX_PORT_SWITCH_DISPLAY 0x10
+#define GMUX_PORT_SWITCH_GET_DISPLAY 0x11
+#define GMUX_PORT_INTERRUPT_ENABLE 0x14
+#define GMUX_PORT_INTERRUPT_STATUS 0x16
+#define GMUX_PORT_SWITCH_DDC 0x28
+#define GMUX_PORT_SWITCH_EXTERNAL 0x40
+#define GMUX_PORT_SWITCH_GET_EXTERNAL 0x41
+#define GMUX_PORT_DISCRETE_POWER 0x50
+#define GMUX_PORT_MAX_BRIGHTNESS 0x70
+#define GMUX_PORT_BRIGHTNESS 0x74
+#define GMUX_PORT_VALUE 0xc2
+#define GMUX_PORT_READ 0xd0
+#define GMUX_PORT_WRITE 0xd4
+
+#define GMUX_MIN_IO_LEN (GMUX_PORT_BRIGHTNESS + 4)
+
+#define GMUX_INTERRUPT_ENABLE 0xff
+#define GMUX_INTERRUPT_DISABLE 0x00
+
+#define GMUX_INTERRUPT_STATUS_ACTIVE 0
+#define GMUX_INTERRUPT_STATUS_DISPLAY (1 << 0)
+#define GMUX_INTERRUPT_STATUS_POWER (1 << 2)
+#define GMUX_INTERRUPT_STATUS_HOTPLUG (1 << 3)
+
+#define GMUX_BRIGHTNESS_MASK 0x00ffffff
+#define GMUX_MAX_BRIGHTNESS GMUX_BRIGHTNESS_MASK
+
+static u8 gmux_pio_read8(struct apple_gmux_data *gmux_data, int port)
+{
+ return inb(gmux_data->iostart + port);
+}
+
+static void gmux_pio_write8(struct apple_gmux_data *gmux_data, int port,
+ u8 val)
+{
+ outb(val, gmux_data->iostart + port);
+}
+
+static u32 gmux_pio_read32(struct apple_gmux_data *gmux_data, int port)
+{
+ return inl(gmux_data->iostart + port);
+}
+
+static void gmux_pio_write32(struct apple_gmux_data *gmux_data, int port,
+ u32 val)
+{
+ int i;
+ u8 tmpval;
+
+ for (i = 0; i < 4; i++) {
+ tmpval = (val >> (i * 8)) & 0xff;
+ outb(tmpval, gmux_data->iostart + port + i);
+ }
+}
+
+static int gmux_index_wait_ready(struct apple_gmux_data *gmux_data)
+{
+ int i = 200;
+ u8 gwr = inb(gmux_data->iostart + GMUX_PORT_WRITE);
+
+ while (i && (gwr & 0x01)) {
+ inb(gmux_data->iostart + GMUX_PORT_READ);
+ gwr = inb(gmux_data->iostart + GMUX_PORT_WRITE);
+ udelay(100);
+ i--;
+ }
+
+ return !!i;
+}
+
+static int gmux_index_wait_complete(struct apple_gmux_data *gmux_data)
+{
+ int i = 200;
+ u8 gwr = inb(gmux_data->iostart + GMUX_PORT_WRITE);
+
+ while (i && !(gwr & 0x01)) {
+ gwr = inb(gmux_data->iostart + GMUX_PORT_WRITE);
+ udelay(100);
+ i--;
+ }
+
+ if (gwr & 0x01)
+ inb(gmux_data->iostart + GMUX_PORT_READ);
+
+ return !!i;
+}
+
+static u8 gmux_index_read8(struct apple_gmux_data *gmux_data, int port)
+{
+ u8 val;
+
+ mutex_lock(&gmux_data->index_lock);
+ gmux_index_wait_ready(gmux_data);
+ outb((port & 0xff), gmux_data->iostart + GMUX_PORT_READ);
+ gmux_index_wait_complete(gmux_data);
+ val = inb(gmux_data->iostart + GMUX_PORT_VALUE);
+ mutex_unlock(&gmux_data->index_lock);
+
+ return val;
+}
+
+static void gmux_index_write8(struct apple_gmux_data *gmux_data, int port,
+ u8 val)
+{
+ mutex_lock(&gmux_data->index_lock);
+ outb(val, gmux_data->iostart + GMUX_PORT_VALUE);
+ gmux_index_wait_ready(gmux_data);
+ outb(port & 0xff, gmux_data->iostart + GMUX_PORT_WRITE);
+ gmux_index_wait_complete(gmux_data);
+ mutex_unlock(&gmux_data->index_lock);
+}
+
+static u32 gmux_index_read32(struct apple_gmux_data *gmux_data, int port)
+{
+ u32 val;
+
+ mutex_lock(&gmux_data->index_lock);
+ gmux_index_wait_ready(gmux_data);
+ outb((port & 0xff), gmux_data->iostart + GMUX_PORT_READ);
+ gmux_index_wait_complete(gmux_data);
+ val = inl(gmux_data->iostart + GMUX_PORT_VALUE);
+ mutex_unlock(&gmux_data->index_lock);
+
+ return val;
+}
+
+static void gmux_index_write32(struct apple_gmux_data *gmux_data, int port,
+ u32 val)
+{
+ int i;
+ u8 tmpval;
+
+ mutex_lock(&gmux_data->index_lock);
+
+ for (i = 0; i < 4; i++) {
+ tmpval = (val >> (i * 8)) & 0xff;
+ outb(tmpval, gmux_data->iostart + GMUX_PORT_VALUE + i);
+ }
+
+ gmux_index_wait_ready(gmux_data);
+ outb(port & 0xff, gmux_data->iostart + GMUX_PORT_WRITE);
+ gmux_index_wait_complete(gmux_data);
+ mutex_unlock(&gmux_data->index_lock);
+}
+
+static u8 gmux_read8(struct apple_gmux_data *gmux_data, int port)
+{
+ if (gmux_data->indexed)
+ return gmux_index_read8(gmux_data, port);
+ else
+ return gmux_pio_read8(gmux_data, port);
+}
+
+static void gmux_write8(struct apple_gmux_data *gmux_data, int port, u8 val)
+{
+ if (gmux_data->indexed)
+ gmux_index_write8(gmux_data, port, val);
+ else
+ gmux_pio_write8(gmux_data, port, val);
+}
+
+static u32 gmux_read32(struct apple_gmux_data *gmux_data, int port)
+{
+ if (gmux_data->indexed)
+ return gmux_index_read32(gmux_data, port);
+ else
+ return gmux_pio_read32(gmux_data, port);
+}
+
+static void gmux_write32(struct apple_gmux_data *gmux_data, int port,
+ u32 val)
+{
+ if (gmux_data->indexed)
+ gmux_index_write32(gmux_data, port, val);
+ else
+ gmux_pio_write32(gmux_data, port, val);
+}
+
+static bool gmux_is_indexed(struct apple_gmux_data *gmux_data)
+{
+ u16 val;
+
+ outb(0xaa, gmux_data->iostart + 0xcc);
+ outb(0x55, gmux_data->iostart + 0xcd);
+ outb(0x00, gmux_data->iostart + 0xce);
+
+ val = inb(gmux_data->iostart + 0xcc) |
+ (inb(gmux_data->iostart + 0xcd) << 8);
+
+ if (val == 0x55aa)
+ return true;
+
+ return false;
+}
+
+static int gmux_get_brightness(struct backlight_device *bd)
+{
+ struct apple_gmux_data *gmux_data = bl_get_data(bd);
+ return gmux_read32(gmux_data, GMUX_PORT_BRIGHTNESS) &
+ GMUX_BRIGHTNESS_MASK;
+}
+
+static int gmux_update_status(struct backlight_device *bd)
+{
+ struct apple_gmux_data *gmux_data = bl_get_data(bd);
+ u32 brightness = bd->props.brightness;
+
+ if (bd->props.state & BL_CORE_SUSPENDED)
+ return 0;
+
+ gmux_write32(gmux_data, GMUX_PORT_BRIGHTNESS, brightness);
+
+ return 0;
+}
+
+static const struct backlight_ops gmux_bl_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .get_brightness = gmux_get_brightness,
+ .update_status = gmux_update_status,
+};
+
+static int gmux_switchto(enum vga_switcheroo_client_id id)
+{
+ if (id == VGA_SWITCHEROO_IGD) {
+ gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_DDC, 1);
+ gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_DISPLAY, 2);
+ gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_EXTERNAL, 2);
+ } else {
+ gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_DDC, 2);
+ gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_DISPLAY, 3);
+ gmux_write8(apple_gmux_data, GMUX_PORT_SWITCH_EXTERNAL, 3);
+ }
+
+ return 0;
+}
+
+static int gmux_set_discrete_state(struct apple_gmux_data *gmux_data,
+ enum vga_switcheroo_state state)
+{
+ reinit_completion(&gmux_data->powerchange_done);
+
+ if (state == VGA_SWITCHEROO_ON) {
+ gmux_write8(gmux_data, GMUX_PORT_DISCRETE_POWER, 1);
+ gmux_write8(gmux_data, GMUX_PORT_DISCRETE_POWER, 3);
+ pr_debug("Discrete card powered up\n");
+ } else {
+ gmux_write8(gmux_data, GMUX_PORT_DISCRETE_POWER, 1);
+ gmux_write8(gmux_data, GMUX_PORT_DISCRETE_POWER, 0);
+ pr_debug("Discrete card powered down\n");
+ }
+
+ gmux_data->power_state = state;
+
+ if (gmux_data->gpe >= 0 &&
+ !wait_for_completion_interruptible_timeout(&gmux_data->powerchange_done,
+ msecs_to_jiffies(200)))
+ pr_warn("Timeout waiting for gmux switch to complete\n");
+
+ return 0;
+}
+
+static int gmux_set_power_state(enum vga_switcheroo_client_id id,
+ enum vga_switcheroo_state state)
+{
+ if (id == VGA_SWITCHEROO_IGD)
+ return 0;
+
+ return gmux_set_discrete_state(apple_gmux_data, state);
+}
+
+static int gmux_get_client_id(struct pci_dev *pdev)
+{
+ /*
+ * Early Macbook Pros with switchable graphics use nvidia
+ * integrated graphics. Hardcode that the 9400M is integrated.
+ */
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL)
+ return VGA_SWITCHEROO_IGD;
+ else if (pdev->vendor == PCI_VENDOR_ID_NVIDIA &&
+ pdev->device == 0x0863)
+ return VGA_SWITCHEROO_IGD;
+ else
+ return VGA_SWITCHEROO_DIS;
+}
+
+static enum vga_switcheroo_client_id
+gmux_active_client(struct apple_gmux_data *gmux_data)
+{
+ if (gmux_read8(gmux_data, GMUX_PORT_SWITCH_DISPLAY) == 2)
+ return VGA_SWITCHEROO_IGD;
+
+ return VGA_SWITCHEROO_DIS;
+}
+
+static struct vga_switcheroo_handler gmux_handler = {
+ .switchto = gmux_switchto,
+ .power_state = gmux_set_power_state,
+ .get_client_id = gmux_get_client_id,
+};
+
+static inline void gmux_disable_interrupts(struct apple_gmux_data *gmux_data)
+{
+ gmux_write8(gmux_data, GMUX_PORT_INTERRUPT_ENABLE,
+ GMUX_INTERRUPT_DISABLE);
+}
+
+static inline void gmux_enable_interrupts(struct apple_gmux_data *gmux_data)
+{
+ gmux_write8(gmux_data, GMUX_PORT_INTERRUPT_ENABLE,
+ GMUX_INTERRUPT_ENABLE);
+}
+
+static inline u8 gmux_interrupt_get_status(struct apple_gmux_data *gmux_data)
+{
+ return gmux_read8(gmux_data, GMUX_PORT_INTERRUPT_STATUS);
+}
+
+static void gmux_clear_interrupts(struct apple_gmux_data *gmux_data)
+{
+ u8 status;
+
+ /* to clear interrupts write back current status */
+ status = gmux_interrupt_get_status(gmux_data);
+ gmux_write8(gmux_data, GMUX_PORT_INTERRUPT_STATUS, status);
+}
+
+static void gmux_notify_handler(acpi_handle device, u32 value, void *context)
+{
+ u8 status;
+ struct pnp_dev *pnp = (struct pnp_dev *)context;
+ struct apple_gmux_data *gmux_data = pnp_get_drvdata(pnp);
+
+ status = gmux_interrupt_get_status(gmux_data);
+ gmux_disable_interrupts(gmux_data);
+ pr_debug("Notify handler called: status %d\n", status);
+
+ gmux_clear_interrupts(gmux_data);
+ gmux_enable_interrupts(gmux_data);
+
+ if (status & GMUX_INTERRUPT_STATUS_POWER)
+ complete(&gmux_data->powerchange_done);
+}
+
+static int gmux_suspend(struct device *dev)
+{
+ struct pnp_dev *pnp = to_pnp_dev(dev);
+ struct apple_gmux_data *gmux_data = pnp_get_drvdata(pnp);
+
+ gmux_data->resume_client_id = gmux_active_client(gmux_data);
+ gmux_disable_interrupts(gmux_data);
+ return 0;
+}
+
+static int gmux_resume(struct device *dev)
+{
+ struct pnp_dev *pnp = to_pnp_dev(dev);
+ struct apple_gmux_data *gmux_data = pnp_get_drvdata(pnp);
+
+ gmux_enable_interrupts(gmux_data);
+ gmux_switchto(gmux_data->resume_client_id);
+ if (gmux_data->power_state == VGA_SWITCHEROO_OFF)
+ gmux_set_discrete_state(gmux_data, gmux_data->power_state);
+ return 0;
+}
+
+static struct pci_dev *gmux_get_io_pdev(void)
+{
+ struct pci_dev *pdev = NULL;
+
+ while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev))) {
+ u16 cmd;
+
+ pci_read_config_word(pdev, PCI_COMMAND, &cmd);
+ if (!(cmd & PCI_COMMAND_IO))
+ continue;
+
+ return pdev;
+ }
+
+ return NULL;
+}
+
+static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
+{
+ struct apple_gmux_data *gmux_data;
+ struct resource *res;
+ struct backlight_properties props;
+ struct backlight_device *bdev;
+ u8 ver_major, ver_minor, ver_release;
+ int ret = -ENXIO;
+ acpi_status status;
+ unsigned long long gpe;
+ struct pci_dev *pdev = NULL;
+
+ if (apple_gmux_data)
+ return -EBUSY;
+
+ gmux_data = kzalloc(sizeof(*gmux_data), GFP_KERNEL);
+ if (!gmux_data)
+ return -ENOMEM;
+ pnp_set_drvdata(pnp, gmux_data);
+
+ res = pnp_get_resource(pnp, IORESOURCE_IO, 0);
+ if (!res) {
+ pr_err("Failed to find gmux I/O resource\n");
+ goto err_free;
+ }
+
+ gmux_data->iostart = res->start;
+ gmux_data->iolen = res->end - res->start;
+
+ if (gmux_data->iolen < GMUX_MIN_IO_LEN) {
+ pr_err("gmux I/O region too small (%lu < %u)\n",
+ gmux_data->iolen, GMUX_MIN_IO_LEN);
+ goto err_free;
+ }
+
+ if (!request_region(gmux_data->iostart, gmux_data->iolen,
+ "Apple gmux")) {
+ pr_err("gmux I/O already in use\n");
+ goto err_free;
+ }
+
+ /*
+ * Invalid version information may indicate either that the gmux
+ * device isn't present or that it's a new one that uses indexed
+ * io
+ */
+
+ ver_major = gmux_read8(gmux_data, GMUX_PORT_VERSION_MAJOR);
+ ver_minor = gmux_read8(gmux_data, GMUX_PORT_VERSION_MINOR);
+ ver_release = gmux_read8(gmux_data, GMUX_PORT_VERSION_RELEASE);
+ if (ver_major == 0xff && ver_minor == 0xff && ver_release == 0xff) {
+ if (gmux_is_indexed(gmux_data)) {
+ u32 version;
+ mutex_init(&gmux_data->index_lock);
+ gmux_data->indexed = true;
+ version = gmux_read32(gmux_data,
+ GMUX_PORT_VERSION_MAJOR);
+ ver_major = (version >> 24) & 0xff;
+ ver_minor = (version >> 16) & 0xff;
+ ver_release = (version >> 8) & 0xff;
+ } else {
+ pr_info("gmux device not present or IO disabled\n");
+ ret = -ENODEV;
+ goto err_release;
+ }
+ }
+ pr_info("Found gmux version %d.%d.%d [%s]\n", ver_major, ver_minor,
+ ver_release, (gmux_data->indexed ? "indexed" : "classic"));
+
+ /*
+ * Apple systems with gmux are EFI based and normally don't use
+ * VGA. In addition changing IO+MEM ownership between IGP and dGPU
+ * disables IO/MEM used for backlight control on some systems.
+ * Lock IO+MEM to GPU with active IO to prevent switch.
+ */
+ pdev = gmux_get_io_pdev();
+ if (pdev && vga_tryget(pdev,
+ VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM)) {
+ pr_err("IO+MEM vgaarb-locking for PCI:%s failed\n",
+ pci_name(pdev));
+ ret = -EBUSY;
+ goto err_release;
+ } else if (pdev)
+ pr_info("locked IO for PCI:%s\n", pci_name(pdev));
+ gmux_data->pdev = pdev;
+
+ memset(&props, 0, sizeof(props));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = gmux_read32(gmux_data, GMUX_PORT_MAX_BRIGHTNESS);
+
+ /*
+ * Currently it's assumed that the maximum brightness is less than
+ * 2^24 for compatibility with old gmux versions. Cap the max
+ * brightness at this value, but print a warning if the hardware
+ * reports something higher so that it can be fixed.
+ */
+ if (WARN_ON(props.max_brightness > GMUX_MAX_BRIGHTNESS))
+ props.max_brightness = GMUX_MAX_BRIGHTNESS;
+
+ bdev = backlight_device_register("gmux_backlight", &pnp->dev,
+ gmux_data, &gmux_bl_ops, &props);
+ if (IS_ERR(bdev)) {
+ ret = PTR_ERR(bdev);
+ goto err_release;
+ }
+
+ gmux_data->bdev = bdev;
+ bdev->props.brightness = gmux_get_brightness(bdev);
+ backlight_update_status(bdev);
+
+ /*
+ * The backlight situation on Macs is complicated. If the gmux is
+ * present it's the best choice, because it always works for
+ * backlight control and supports more levels than other options.
+ * Disable the other backlight choices.
+ */
+ acpi_video_dmi_promote_vendor();
+ acpi_video_unregister();
+ apple_bl_unregister();
+
+ gmux_data->power_state = VGA_SWITCHEROO_ON;
+
+ gmux_data->dhandle = ACPI_HANDLE(&pnp->dev);
+ if (!gmux_data->dhandle) {
+ pr_err("Cannot find acpi handle for pnp device %s\n",
+ dev_name(&pnp->dev));
+ ret = -ENODEV;
+ goto err_notify;
+ }
+
+ status = acpi_evaluate_integer(gmux_data->dhandle, "GMGP", NULL, &gpe);
+ if (ACPI_SUCCESS(status)) {
+ gmux_data->gpe = (int)gpe;
+
+ status = acpi_install_notify_handler(gmux_data->dhandle,
+ ACPI_DEVICE_NOTIFY,
+ &gmux_notify_handler, pnp);
+ if (ACPI_FAILURE(status)) {
+ pr_err("Install notify handler failed: %s\n",
+ acpi_format_exception(status));
+ ret = -ENODEV;
+ goto err_notify;
+ }
+
+ status = acpi_enable_gpe(NULL, gmux_data->gpe);
+ if (ACPI_FAILURE(status)) {
+ pr_err("Cannot enable gpe: %s\n",
+ acpi_format_exception(status));
+ goto err_enable_gpe;
+ }
+ } else {
+ pr_warn("No GPE found for gmux\n");
+ gmux_data->gpe = -1;
+ }
+
+ if (vga_switcheroo_register_handler(&gmux_handler)) {
+ ret = -ENODEV;
+ goto err_register_handler;
+ }
+
+ init_completion(&gmux_data->powerchange_done);
+ apple_gmux_data = gmux_data;
+ gmux_enable_interrupts(gmux_data);
+
+ return 0;
+
+err_register_handler:
+ if (gmux_data->gpe >= 0)
+ acpi_disable_gpe(NULL, gmux_data->gpe);
+err_enable_gpe:
+ if (gmux_data->gpe >= 0)
+ acpi_remove_notify_handler(gmux_data->dhandle,
+ ACPI_DEVICE_NOTIFY,
+ &gmux_notify_handler);
+err_notify:
+ backlight_device_unregister(bdev);
+err_release:
+ if (gmux_data->pdev)
+ vga_put(gmux_data->pdev,
+ VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM);
+ pci_dev_put(pdev);
+ release_region(gmux_data->iostart, gmux_data->iolen);
+err_free:
+ kfree(gmux_data);
+ return ret;
+}
+
+static void gmux_remove(struct pnp_dev *pnp)
+{
+ struct apple_gmux_data *gmux_data = pnp_get_drvdata(pnp);
+
+ vga_switcheroo_unregister_handler();
+ gmux_disable_interrupts(gmux_data);
+ if (gmux_data->gpe >= 0) {
+ acpi_disable_gpe(NULL, gmux_data->gpe);
+ acpi_remove_notify_handler(gmux_data->dhandle,
+ ACPI_DEVICE_NOTIFY,
+ &gmux_notify_handler);
+ }
+
+ if (gmux_data->pdev) {
+ vga_put(gmux_data->pdev,
+ VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM);
+ pci_dev_put(gmux_data->pdev);
+ }
+ backlight_device_unregister(gmux_data->bdev);
+
+ release_region(gmux_data->iostart, gmux_data->iolen);
+ apple_gmux_data = NULL;
+ kfree(gmux_data);
+
+ acpi_video_dmi_demote_vendor();
+ acpi_video_register();
+ apple_bl_register();
+}
+
+static const struct pnp_device_id gmux_device_ids[] = {
+ {"APP000B", 0},
+ {"", 0}
+};
+
+static const struct dev_pm_ops gmux_dev_pm_ops = {
+ .suspend = gmux_suspend,
+ .resume = gmux_resume,
+};
+
+static struct pnp_driver gmux_pnp_driver = {
+ .name = "apple-gmux",
+ .probe = gmux_probe,
+ .remove = gmux_remove,
+ .id_table = gmux_device_ids,
+ .driver = {
+ .pm = &gmux_dev_pm_ops,
+ },
+};
+
+module_pnp_driver(gmux_pnp_driver);
+MODULE_AUTHOR("Seth Forshee <seth.forshee@canonical.com>");
+MODULE_DESCRIPTION("Apple Gmux Driver");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pnp, gmux_device_ids);
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
new file mode 100644
index 000000000..46b274693
--- /dev/null
+++ b/drivers/platform/x86/asus-laptop.c
@@ -0,0 +1,2002 @@
+/*
+ * asus-laptop.c - Asus Laptop Support
+ *
+ *
+ * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
+ * Copyright (C) 2006-2007 Corentin Chary
+ * Copyright (C) 2011 Wind River Systems
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ *
+ * The development page for this driver is located at
+ * http://sourceforge.net/projects/acpi4asus/
+ *
+ * Credits:
+ * Pontus Fuchs - Helper functions, cleanup
+ * Johann Wiesner - Small compile fixes
+ * John Belmonte - ACPI code for Toshiba laptop was a good starting point.
+ * Eric Burghard - LED display support for W1N
+ * Josh Green - Light Sens support
+ * Thomas Tuttle - His first patch for led support was very helpful
+ * Sam Lin - GPS support
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/err.h>
+#include <linux/proc_fs.h>
+#include <linux/backlight.h>
+#include <linux/fb.h>
+#include <linux/leds.h>
+#include <linux/platform_device.h>
+#include <linux/uaccess.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/input-polldev.h>
+#include <linux/rfkill.h>
+#include <linux/slab.h>
+#include <linux/dmi.h>
+#include <linux/acpi.h>
+
+#define ASUS_LAPTOP_VERSION "0.42"
+
+#define ASUS_LAPTOP_NAME "Asus Laptop Support"
+#define ASUS_LAPTOP_CLASS "hotkey"
+#define ASUS_LAPTOP_DEVICE_NAME "Hotkey"
+#define ASUS_LAPTOP_FILE KBUILD_MODNAME
+#define ASUS_LAPTOP_PREFIX "\\_SB.ATKD."
+
+MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
+MODULE_DESCRIPTION(ASUS_LAPTOP_NAME);
+MODULE_LICENSE("GPL");
+
+/*
+ * WAPF defines the behavior of the Fn+Fx wlan key
+ * The significance of values is yet to be found, but
+ * most of the time:
+ * Bit | Bluetooth | WLAN
+ * 0 | Hardware | Hardware
+ * 1 | Hardware | Software
+ * 4 | Software | Software
+ */
+static uint wapf = 1;
+module_param(wapf, uint, 0444);
+MODULE_PARM_DESC(wapf, "WAPF value");
+
+static char *wled_type = "unknown";
+static char *bled_type = "unknown";
+
+module_param(wled_type, charp, 0444);
+MODULE_PARM_DESC(wled_type, "Set the wled type on boot "
+ "(unknown, led or rfkill). "
+ "default is unknown");
+
+module_param(bled_type, charp, 0444);
+MODULE_PARM_DESC(bled_type, "Set the bled type on boot "
+ "(unknown, led or rfkill). "
+ "default is unknown");
+
+static int wlan_status = 1;
+static int bluetooth_status = 1;
+static int wimax_status = -1;
+static int wwan_status = -1;
+static int als_status;
+
+module_param(wlan_status, int, 0444);
+MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot "
+ "(0 = disabled, 1 = enabled, -1 = don't do anything). "
+ "default is -1");
+
+module_param(bluetooth_status, int, 0444);
+MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
+ "(0 = disabled, 1 = enabled, -1 = don't do anything). "
+ "default is -1");
+
+module_param(wimax_status, int, 0444);
+MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot "
+ "(0 = disabled, 1 = enabled, -1 = don't do anything). "
+ "default is -1");
+
+module_param(wwan_status, int, 0444);
+MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot "
+ "(0 = disabled, 1 = enabled, -1 = don't do anything). "
+ "default is -1");
+
+module_param(als_status, int, 0444);
+MODULE_PARM_DESC(als_status, "Set the ALS status on boot "
+ "(0 = disabled, 1 = enabled). "
+ "default is 0");
+
+/*
+ * Some events we use, same for all Asus
+ */
+#define ATKD_BRNUP_MIN 0x10
+#define ATKD_BRNUP_MAX 0x1f
+#define ATKD_BRNDOWN_MIN 0x20
+#define ATKD_BRNDOWN_MAX 0x2f
+#define ATKD_BRNDOWN 0x20
+#define ATKD_BRNUP 0x2f
+#define ATKD_LCD_ON 0x33
+#define ATKD_LCD_OFF 0x34
+
+/*
+ * Known bits returned by \_SB.ATKD.HWRS
+ */
+#define WL_HWRS 0x80
+#define BT_HWRS 0x100
+
+/*
+ * Flags for hotk status
+ * WL_ON and BT_ON are also used for wireless_status()
+ */
+#define WL_RSTS 0x01 /* internal Wifi */
+#define BT_RSTS 0x02 /* internal Bluetooth */
+#define WM_RSTS 0x08 /* internal wimax */
+#define WW_RSTS 0x20 /* internal wwan */
+
+/* WLED and BLED type */
+#define TYPE_UNKNOWN 0
+#define TYPE_LED 1
+#define TYPE_RFKILL 2
+
+/* LED */
+#define METHOD_MLED "MLED"
+#define METHOD_TLED "TLED"
+#define METHOD_RLED "RLED" /* W1JC */
+#define METHOD_PLED "PLED" /* A7J */
+#define METHOD_GLED "GLED" /* G1, G2 (probably) */
+
+/* LEDD */
+#define METHOD_LEDD "SLCM"
+
+/*
+ * Bluetooth and WLAN
+ * WLED and BLED are not handled like other XLED, because in some dsdt
+ * they also control the WLAN/Bluetooth device.
+ */
+#define METHOD_WLAN "WLED"
+#define METHOD_BLUETOOTH "BLED"
+
+/* WWAN and WIMAX */
+#define METHOD_WWAN "GSMC"
+#define METHOD_WIMAX "WMXC"
+
+#define METHOD_WL_STATUS "RSTS"
+
+/* Brightness */
+#define METHOD_BRIGHTNESS_SET "SPLV"
+#define METHOD_BRIGHTNESS_GET "GPLV"
+
+/* Display */
+#define METHOD_SWITCH_DISPLAY "SDSP"
+
+#define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */
+#define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */
+
+/* GPS */
+/* R2H use different handle for GPS on/off */
+#define METHOD_GPS_ON "SDON"
+#define METHOD_GPS_OFF "SDOF"
+#define METHOD_GPS_STATUS "GPST"
+
+/* Keyboard light */
+#define METHOD_KBD_LIGHT_SET "SLKB"
+#define METHOD_KBD_LIGHT_GET "GLKB"
+
+/* For Pegatron Lucid tablet */
+#define DEVICE_NAME_PEGA "Lucid"
+
+#define METHOD_PEGA_ENABLE "ENPR"
+#define METHOD_PEGA_DISABLE "DAPR"
+#define PEGA_WLAN 0x00
+#define PEGA_BLUETOOTH 0x01
+#define PEGA_WWAN 0x02
+#define PEGA_ALS 0x04
+#define PEGA_ALS_POWER 0x05
+
+#define METHOD_PEGA_READ "RDLN"
+#define PEGA_READ_ALS_H 0x02
+#define PEGA_READ_ALS_L 0x03
+
+#define PEGA_ACCEL_NAME "pega_accel"
+#define PEGA_ACCEL_DESC "Pegatron Lucid Tablet Accelerometer"
+#define METHOD_XLRX "XLRX"
+#define METHOD_XLRY "XLRY"
+#define METHOD_XLRZ "XLRZ"
+#define PEGA_ACC_CLAMP 512 /* 1G accel is reported as ~256, so clamp to 2G */
+#define PEGA_ACC_RETRIES 3
+
+/*
+ * Define a specific led structure to keep the main structure clean
+ */
+struct asus_led {
+ int wk;
+ struct work_struct work;
+ struct led_classdev led;
+ struct asus_laptop *asus;
+ const char *method;
+};
+
+/*
+ * Same thing for rfkill
+ */
+struct asus_rfkill {
+ /* type of control. Maps to PEGA_* values or *_RSTS */
+ int control_id;
+ struct rfkill *rfkill;
+ struct asus_laptop *asus;
+};
+
+/*
+ * This is the main structure, we can use it to store anything interesting
+ * about the hotk device
+ */
+struct asus_laptop {
+ char *name; /* laptop name */
+
+ struct acpi_table_header *dsdt_info;
+ struct platform_device *platform_device;
+ struct acpi_device *device; /* the device we are in */
+ struct backlight_device *backlight_device;
+
+ struct input_dev *inputdev;
+ struct key_entry *keymap;
+ struct input_polled_dev *pega_accel_poll;
+
+ struct asus_led wled;
+ struct asus_led bled;
+ struct asus_led mled;
+ struct asus_led tled;
+ struct asus_led rled;
+ struct asus_led pled;
+ struct asus_led gled;
+ struct asus_led kled;
+ struct workqueue_struct *led_workqueue;
+
+ int wled_type;
+ int bled_type;
+ int wireless_status;
+ bool have_rsts;
+ bool is_pega_lucid;
+ bool pega_acc_live;
+ int pega_acc_x;
+ int pega_acc_y;
+ int pega_acc_z;
+
+ struct asus_rfkill wlan;
+ struct asus_rfkill bluetooth;
+ struct asus_rfkill wwan;
+ struct asus_rfkill wimax;
+ struct asus_rfkill gps;
+
+ acpi_handle handle; /* the handle of the hotk device */
+ u32 ledd_status; /* status of the LED display */
+ u8 light_level; /* light sensor level */
+ u8 light_switch; /* light sensor switch value */
+ u16 event_count[128]; /* count for each event TODO make this better */
+};
+
+static const struct key_entry asus_keymap[] = {
+ /* Lenovo SL Specific keycodes */
+ {KE_KEY, 0x02, { KEY_SCREENLOCK } },
+ {KE_KEY, 0x05, { KEY_WLAN } },
+ {KE_KEY, 0x08, { KEY_F13 } },
+ {KE_KEY, 0x09, { KEY_PROG2 } }, /* Dock */
+ {KE_KEY, 0x17, { KEY_ZOOM } },
+ {KE_KEY, 0x1f, { KEY_BATTERY } },
+ /* End of Lenovo SL Specific keycodes */
+ {KE_KEY, ATKD_BRNDOWN, { KEY_BRIGHTNESSDOWN } },
+ {KE_KEY, ATKD_BRNUP, { KEY_BRIGHTNESSUP } },
+ {KE_KEY, 0x30, { KEY_VOLUMEUP } },
+ {KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
+ {KE_KEY, 0x32, { KEY_MUTE } },
+ {KE_KEY, 0x33, { KEY_DISPLAYTOGGLE } }, /* LCD on */
+ {KE_KEY, 0x34, { KEY_DISPLAY_OFF } }, /* LCD off */
+ {KE_KEY, 0x40, { KEY_PREVIOUSSONG } },
+ {KE_KEY, 0x41, { KEY_NEXTSONG } },
+ {KE_KEY, 0x43, { KEY_STOPCD } }, /* Stop/Eject */
+ {KE_KEY, 0x45, { KEY_PLAYPAUSE } },
+ {KE_KEY, 0x4c, { KEY_MEDIA } }, /* WMP Key */
+ {KE_KEY, 0x50, { KEY_EMAIL } },
+ {KE_KEY, 0x51, { KEY_WWW } },
+ {KE_KEY, 0x55, { KEY_CALC } },
+ {KE_IGNORE, 0x57, }, /* Battery mode */
+ {KE_IGNORE, 0x58, }, /* AC mode */
+ {KE_KEY, 0x5C, { KEY_SCREENLOCK } }, /* Screenlock */
+ {KE_KEY, 0x5D, { KEY_WLAN } }, /* WLAN Toggle */
+ {KE_KEY, 0x5E, { KEY_WLAN } }, /* WLAN Enable */
+ {KE_KEY, 0x5F, { KEY_WLAN } }, /* WLAN Disable */
+ {KE_KEY, 0x60, { KEY_TOUCHPAD_ON } },
+ {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD only */
+ {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT only */
+ {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT */
+ {KE_KEY, 0x64, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV */
+ {KE_KEY, 0x65, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV */
+ {KE_KEY, 0x66, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV */
+ {KE_KEY, 0x67, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV */
+ {KE_KEY, 0x6B, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad */
+ {KE_KEY, 0x6C, { KEY_SLEEP } }, /* Suspend */
+ {KE_KEY, 0x6D, { KEY_SLEEP } }, /* Hibernate */
+ {KE_IGNORE, 0x6E, }, /* Low Battery notification */
+ {KE_KEY, 0x7D, { KEY_BLUETOOTH } }, /* Bluetooth Enable */
+ {KE_KEY, 0x7E, { KEY_BLUETOOTH } }, /* Bluetooth Disable */
+ {KE_KEY, 0x82, { KEY_CAMERA } },
+ {KE_KEY, 0x88, { KEY_RFKILL } }, /* Radio Toggle Key */
+ {KE_KEY, 0x8A, { KEY_PROG1 } }, /* Color enhancement mode */
+ {KE_KEY, 0x8C, { KEY_SWITCHVIDEOMODE } }, /* SDSP DVI only */
+ {KE_KEY, 0x8D, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + DVI */
+ {KE_KEY, 0x8E, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + DVI */
+ {KE_KEY, 0x8F, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + DVI */
+ {KE_KEY, 0x90, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + DVI */
+ {KE_KEY, 0x91, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + DVI */
+ {KE_KEY, 0x92, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + DVI */
+ {KE_KEY, 0x93, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + DVI */
+ {KE_KEY, 0x95, { KEY_MEDIA } },
+ {KE_KEY, 0x99, { KEY_PHONE } },
+ {KE_KEY, 0xA0, { KEY_SWITCHVIDEOMODE } }, /* SDSP HDMI only */
+ {KE_KEY, 0xA1, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + HDMI */
+ {KE_KEY, 0xA2, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + HDMI */
+ {KE_KEY, 0xA3, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + HDMI */
+ {KE_KEY, 0xA4, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + HDMI */
+ {KE_KEY, 0xA5, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + HDMI */
+ {KE_KEY, 0xA6, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + HDMI */
+ {KE_KEY, 0xA7, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + HDMI */
+ {KE_KEY, 0xB5, { KEY_CALC } },
+ {KE_KEY, 0xC4, { KEY_KBDILLUMUP } },
+ {KE_KEY, 0xC5, { KEY_KBDILLUMDOWN } },
+ {KE_END, 0},
+};
+
+
+/*
+ * This function evaluates an ACPI method, given an int as parameter, the
+ * method is searched within the scope of the handle, can be NULL. The output
+ * of the method is written is output, which can also be NULL
+ *
+ * returns 0 if write is successful, -1 else.
+ */
+static int write_acpi_int_ret(acpi_handle handle, const char *method, int val,
+ struct acpi_buffer *output)
+{
+ struct acpi_object_list params; /* list of input parameters (an int) */
+ union acpi_object in_obj; /* the only param we use */
+ acpi_status status;
+
+ if (!handle)
+ return -1;
+
+ params.count = 1;
+ params.pointer = &in_obj;
+ in_obj.type = ACPI_TYPE_INTEGER;
+ in_obj.integer.value = val;
+
+ status = acpi_evaluate_object(handle, (char *)method, &params, output);
+ if (status == AE_OK)
+ return 0;
+ else
+ return -1;
+}
+
+static int write_acpi_int(acpi_handle handle, const char *method, int val)
+{
+ return write_acpi_int_ret(handle, method, val, NULL);
+}
+
+static int acpi_check_handle(acpi_handle handle, const char *method,
+ acpi_handle *ret)
+{
+ acpi_status status;
+
+ if (method == NULL)
+ return -ENODEV;
+
+ if (ret)
+ status = acpi_get_handle(handle, (char *)method,
+ ret);
+ else {
+ acpi_handle dummy;
+
+ status = acpi_get_handle(handle, (char *)method,
+ &dummy);
+ }
+
+ if (status != AE_OK) {
+ if (ret)
+ pr_warn("Error finding %s\n", method);
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static bool asus_check_pega_lucid(struct asus_laptop *asus)
+{
+ return !strcmp(asus->name, DEVICE_NAME_PEGA) &&
+ !acpi_check_handle(asus->handle, METHOD_PEGA_ENABLE, NULL) &&
+ !acpi_check_handle(asus->handle, METHOD_PEGA_DISABLE, NULL) &&
+ !acpi_check_handle(asus->handle, METHOD_PEGA_READ, NULL);
+}
+
+static int asus_pega_lucid_set(struct asus_laptop *asus, int unit, bool enable)
+{
+ char *method = enable ? METHOD_PEGA_ENABLE : METHOD_PEGA_DISABLE;
+ return write_acpi_int(asus->handle, method, unit);
+}
+
+static int pega_acc_axis(struct asus_laptop *asus, int curr, char *method)
+{
+ int i, delta;
+ unsigned long long val;
+ for (i = 0; i < PEGA_ACC_RETRIES; i++) {
+ acpi_evaluate_integer(asus->handle, method, NULL, &val);
+
+ /* The output is noisy. From reading the ASL
+ * dissassembly, timeout errors are returned with 1's
+ * in the high word, and the lack of locking around
+ * thei hi/lo byte reads means that a transition
+ * between (for example) -1 and 0 could be read as
+ * 0xff00 or 0x00ff. */
+ delta = abs(curr - (short)val);
+ if (delta < 128 && !(val & ~0xffff))
+ break;
+ }
+ return clamp_val((short)val, -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP);
+}
+
+static void pega_accel_poll(struct input_polled_dev *ipd)
+{
+ struct device *parent = ipd->input->dev.parent;
+ struct asus_laptop *asus = dev_get_drvdata(parent);
+
+ /* In some cases, the very first call to poll causes a
+ * recursive fault under the polldev worker. This is
+ * apparently related to very early userspace access to the
+ * device, and perhaps a firmware bug. Fake the first report. */
+ if (!asus->pega_acc_live) {
+ asus->pega_acc_live = true;
+ input_report_abs(ipd->input, ABS_X, 0);
+ input_report_abs(ipd->input, ABS_Y, 0);
+ input_report_abs(ipd->input, ABS_Z, 0);
+ input_sync(ipd->input);
+ return;
+ }
+
+ asus->pega_acc_x = pega_acc_axis(asus, asus->pega_acc_x, METHOD_XLRX);
+ asus->pega_acc_y = pega_acc_axis(asus, asus->pega_acc_y, METHOD_XLRY);
+ asus->pega_acc_z = pega_acc_axis(asus, asus->pega_acc_z, METHOD_XLRZ);
+
+ /* Note transform, convert to "right/up/out" in the native
+ * landscape orientation (i.e. the vector is the direction of
+ * "real up" in the device's cartiesian coordinates). */
+ input_report_abs(ipd->input, ABS_X, -asus->pega_acc_x);
+ input_report_abs(ipd->input, ABS_Y, -asus->pega_acc_y);
+ input_report_abs(ipd->input, ABS_Z, asus->pega_acc_z);
+ input_sync(ipd->input);
+}
+
+static void pega_accel_exit(struct asus_laptop *asus)
+{
+ if (asus->pega_accel_poll) {
+ input_unregister_polled_device(asus->pega_accel_poll);
+ input_free_polled_device(asus->pega_accel_poll);
+ }
+ asus->pega_accel_poll = NULL;
+}
+
+static int pega_accel_init(struct asus_laptop *asus)
+{
+ int err;
+ struct input_polled_dev *ipd;
+
+ if (!asus->is_pega_lucid)
+ return -ENODEV;
+
+ if (acpi_check_handle(asus->handle, METHOD_XLRX, NULL) ||
+ acpi_check_handle(asus->handle, METHOD_XLRY, NULL) ||
+ acpi_check_handle(asus->handle, METHOD_XLRZ, NULL))
+ return -ENODEV;
+
+ ipd = input_allocate_polled_device();
+ if (!ipd)
+ return -ENOMEM;
+
+ ipd->poll = pega_accel_poll;
+ ipd->poll_interval = 125;
+ ipd->poll_interval_min = 50;
+ ipd->poll_interval_max = 2000;
+
+ ipd->input->name = PEGA_ACCEL_DESC;
+ ipd->input->phys = PEGA_ACCEL_NAME "/input0";
+ ipd->input->dev.parent = &asus->platform_device->dev;
+ ipd->input->id.bustype = BUS_HOST;
+
+ set_bit(EV_ABS, ipd->input->evbit);
+ input_set_abs_params(ipd->input, ABS_X,
+ -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
+ input_set_abs_params(ipd->input, ABS_Y,
+ -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
+ input_set_abs_params(ipd->input, ABS_Z,
+ -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
+
+ err = input_register_polled_device(ipd);
+ if (err)
+ goto exit;
+
+ asus->pega_accel_poll = ipd;
+ return 0;
+
+exit:
+ input_free_polled_device(ipd);
+ return err;
+}
+
+/* Generic LED function */
+static int asus_led_set(struct asus_laptop *asus, const char *method,
+ int value)
+{
+ if (!strcmp(method, METHOD_MLED))
+ value = !value;
+ else if (!strcmp(method, METHOD_GLED))
+ value = !value + 1;
+ else
+ value = !!value;
+
+ return write_acpi_int(asus->handle, method, value);
+}
+
+/*
+ * LEDs
+ */
+/* /sys/class/led handlers */
+static void asus_led_cdev_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct asus_led *led = container_of(led_cdev, struct asus_led, led);
+ struct asus_laptop *asus = led->asus;
+
+ led->wk = !!value;
+ queue_work(asus->led_workqueue, &led->work);
+}
+
+static void asus_led_cdev_update(struct work_struct *work)
+{
+ struct asus_led *led = container_of(work, struct asus_led, work);
+ struct asus_laptop *asus = led->asus;
+
+ asus_led_set(asus, led->method, led->wk);
+}
+
+static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev)
+{
+ return led_cdev->brightness;
+}
+
+/*
+ * Keyboard backlight (also a LED)
+ */
+static int asus_kled_lvl(struct asus_laptop *asus)
+{
+ unsigned long long kblv;
+ struct acpi_object_list params;
+ union acpi_object in_obj;
+ acpi_status rv;
+
+ params.count = 1;
+ params.pointer = &in_obj;
+ in_obj.type = ACPI_TYPE_INTEGER;
+ in_obj.integer.value = 2;
+
+ rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET,
+ &params, &kblv);
+ if (ACPI_FAILURE(rv)) {
+ pr_warn("Error reading kled level\n");
+ return -ENODEV;
+ }
+ return kblv;
+}
+
+static int asus_kled_set(struct asus_laptop *asus, int kblv)
+{
+ if (kblv > 0)
+ kblv = (1 << 7) | (kblv & 0x7F);
+ else
+ kblv = 0;
+
+ if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) {
+ pr_warn("Keyboard LED display write failed\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static void asus_kled_cdev_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct asus_led *led = container_of(led_cdev, struct asus_led, led);
+ struct asus_laptop *asus = led->asus;
+
+ led->wk = value;
+ queue_work(asus->led_workqueue, &led->work);
+}
+
+static void asus_kled_cdev_update(struct work_struct *work)
+{
+ struct asus_led *led = container_of(work, struct asus_led, work);
+ struct asus_laptop *asus = led->asus;
+
+ asus_kled_set(asus, led->wk);
+}
+
+static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev)
+{
+ struct asus_led *led = container_of(led_cdev, struct asus_led, led);
+ struct asus_laptop *asus = led->asus;
+
+ return asus_kled_lvl(asus);
+}
+
+static void asus_led_exit(struct asus_laptop *asus)
+{
+ if (!IS_ERR_OR_NULL(asus->wled.led.dev))
+ led_classdev_unregister(&asus->wled.led);
+ if (!IS_ERR_OR_NULL(asus->bled.led.dev))
+ led_classdev_unregister(&asus->bled.led);
+ if (!IS_ERR_OR_NULL(asus->mled.led.dev))
+ led_classdev_unregister(&asus->mled.led);
+ if (!IS_ERR_OR_NULL(asus->tled.led.dev))
+ led_classdev_unregister(&asus->tled.led);
+ if (!IS_ERR_OR_NULL(asus->pled.led.dev))
+ led_classdev_unregister(&asus->pled.led);
+ if (!IS_ERR_OR_NULL(asus->rled.led.dev))
+ led_classdev_unregister(&asus->rled.led);
+ if (!IS_ERR_OR_NULL(asus->gled.led.dev))
+ led_classdev_unregister(&asus->gled.led);
+ if (!IS_ERR_OR_NULL(asus->kled.led.dev))
+ led_classdev_unregister(&asus->kled.led);
+ if (asus->led_workqueue) {
+ destroy_workqueue(asus->led_workqueue);
+ asus->led_workqueue = NULL;
+ }
+}
+
+/* Ugly macro, need to fix that later */
+static int asus_led_register(struct asus_laptop *asus,
+ struct asus_led *led,
+ const char *name, const char *method)
+{
+ struct led_classdev *led_cdev = &led->led;
+
+ if (!method || acpi_check_handle(asus->handle, method, NULL))
+ return 0; /* Led not present */
+
+ led->asus = asus;
+ led->method = method;
+
+ INIT_WORK(&led->work, asus_led_cdev_update);
+ led_cdev->name = name;
+ led_cdev->brightness_set = asus_led_cdev_set;
+ led_cdev->brightness_get = asus_led_cdev_get;
+ led_cdev->max_brightness = 1;
+ return led_classdev_register(&asus->platform_device->dev, led_cdev);
+}
+
+static int asus_led_init(struct asus_laptop *asus)
+{
+ int r = 0;
+
+ /*
+ * The Pegatron Lucid has no physical leds, but all methods are
+ * available in the DSDT...
+ */
+ if (asus->is_pega_lucid)
+ return 0;
+
+ /*
+ * Functions that actually update the LED's are called from a
+ * workqueue. By doing this as separate work rather than when the LED
+ * subsystem asks, we avoid messing with the Asus ACPI stuff during a
+ * potentially bad time, such as a timer interrupt.
+ */
+ asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
+ if (!asus->led_workqueue)
+ return -ENOMEM;
+
+ if (asus->wled_type == TYPE_LED)
+ r = asus_led_register(asus, &asus->wled, "asus::wlan",
+ METHOD_WLAN);
+ if (r)
+ goto error;
+ if (asus->bled_type == TYPE_LED)
+ r = asus_led_register(asus, &asus->bled, "asus::bluetooth",
+ METHOD_BLUETOOTH);
+ if (r)
+ goto error;
+ r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED);
+ if (r)
+ goto error;
+ r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED);
+ if (r)
+ goto error;
+ r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED);
+ if (r)
+ goto error;
+ r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED);
+ if (r)
+ goto error;
+ r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED);
+ if (r)
+ goto error;
+ if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) &&
+ !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) {
+ struct asus_led *led = &asus->kled;
+ struct led_classdev *cdev = &led->led;
+
+ led->asus = asus;
+
+ INIT_WORK(&led->work, asus_kled_cdev_update);
+ cdev->name = "asus::kbd_backlight";
+ cdev->brightness_set = asus_kled_cdev_set;
+ cdev->brightness_get = asus_kled_cdev_get;
+ cdev->max_brightness = 3;
+ r = led_classdev_register(&asus->platform_device->dev, cdev);
+ }
+error:
+ if (r)
+ asus_led_exit(asus);
+ return r;
+}
+
+/*
+ * Backlight device
+ */
+static int asus_read_brightness(struct backlight_device *bd)
+{
+ struct asus_laptop *asus = bl_get_data(bd);
+ unsigned long long value;
+ acpi_status rv = AE_OK;
+
+ rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET,
+ NULL, &value);
+ if (ACPI_FAILURE(rv))
+ pr_warn("Error reading brightness\n");
+
+ return value;
+}
+
+static int asus_set_brightness(struct backlight_device *bd, int value)
+{
+ struct asus_laptop *asus = bl_get_data(bd);
+
+ if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) {
+ pr_warn("Error changing brightness\n");
+ return -EIO;
+ }
+ return 0;
+}
+
+static int update_bl_status(struct backlight_device *bd)
+{
+ int value = bd->props.brightness;
+
+ return asus_set_brightness(bd, value);
+}
+
+static const struct backlight_ops asusbl_ops = {
+ .get_brightness = asus_read_brightness,
+ .update_status = update_bl_status,
+};
+
+static int asus_backlight_notify(struct asus_laptop *asus)
+{
+ struct backlight_device *bd = asus->backlight_device;
+ int old = bd->props.brightness;
+
+ backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
+
+ return old;
+}
+
+static int asus_backlight_init(struct asus_laptop *asus)
+{
+ struct backlight_device *bd;
+ struct backlight_properties props;
+
+ if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) ||
+ acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL))
+ return 0;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.max_brightness = 15;
+ props.type = BACKLIGHT_PLATFORM;
+
+ bd = backlight_device_register(ASUS_LAPTOP_FILE,
+ &asus->platform_device->dev, asus,
+ &asusbl_ops, &props);
+ if (IS_ERR(bd)) {
+ pr_err("Could not register asus backlight device\n");
+ asus->backlight_device = NULL;
+ return PTR_ERR(bd);
+ }
+
+ asus->backlight_device = bd;
+ bd->props.brightness = asus_read_brightness(bd);
+ bd->props.power = FB_BLANK_UNBLANK;
+ backlight_update_status(bd);
+ return 0;
+}
+
+static void asus_backlight_exit(struct asus_laptop *asus)
+{
+ backlight_device_unregister(asus->backlight_device);
+ asus->backlight_device = NULL;
+}
+
+/*
+ * Platform device handlers
+ */
+
+/*
+ * We write our info in page, we begin at offset off and cannot write more
+ * than count bytes. We set eof to 1 if we handle those 2 values. We return the
+ * number of bytes written in page
+ */
+static ssize_t infos_show(struct device *dev, struct device_attribute *attr,
+ char *page)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+ int len = 0;
+ unsigned long long temp;
+ char buf[16]; /* enough for all info */
+ acpi_status rv = AE_OK;
+
+ /*
+ * We use the easy way, we don't care of off and count,
+ * so we don't set eof to 1
+ */
+
+ len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
+ len += sprintf(page + len, "Model reference : %s\n", asus->name);
+ /*
+ * The SFUN method probably allows the original driver to get the list
+ * of features supported by a given model. For now, 0x0100 or 0x0800
+ * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
+ * The significance of others is yet to be found.
+ */
+ rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
+ if (!ACPI_FAILURE(rv))
+ len += sprintf(page + len, "SFUN value : %#x\n",
+ (uint) temp);
+ /*
+ * The HWRS method return informations about the hardware.
+ * 0x80 bit is for WLAN, 0x100 for Bluetooth.
+ * 0x40 for WWAN, 0x10 for WIMAX.
+ * The significance of others is yet to be found.
+ * We don't currently use this for device detection, and it
+ * takes several seconds to run on some systems.
+ */
+ rv = acpi_evaluate_integer(asus->handle, "HWRS", NULL, &temp);
+ if (!ACPI_FAILURE(rv))
+ len += sprintf(page + len, "HWRS value : %#x\n",
+ (uint) temp);
+ /*
+ * Another value for userspace: the ASYM method returns 0x02 for
+ * battery low and 0x04 for battery critical, its readings tend to be
+ * more accurate than those provided by _BST.
+ * Note: since not all the laptops provide this method, errors are
+ * silently ignored.
+ */
+ rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
+ if (!ACPI_FAILURE(rv))
+ len += sprintf(page + len, "ASYM value : %#x\n",
+ (uint) temp);
+ if (asus->dsdt_info) {
+ snprintf(buf, 16, "%d", asus->dsdt_info->length);
+ len += sprintf(page + len, "DSDT length : %s\n", buf);
+ snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
+ len += sprintf(page + len, "DSDT checksum : %s\n", buf);
+ snprintf(buf, 16, "%d", asus->dsdt_info->revision);
+ len += sprintf(page + len, "DSDT revision : %s\n", buf);
+ snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
+ len += sprintf(page + len, "OEM id : %s\n", buf);
+ snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
+ len += sprintf(page + len, "OEM table id : %s\n", buf);
+ snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
+ len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
+ snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
+ len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
+ snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
+ len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
+ }
+
+ return len;
+}
+static DEVICE_ATTR_RO(infos);
+
+static int parse_arg(const char *buf, unsigned long count, int *val)
+{
+ if (!count)
+ return 0;
+ if (count > 31)
+ return -EINVAL;
+ if (sscanf(buf, "%i", val) != 1)
+ return -EINVAL;
+ return count;
+}
+
+static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
+ const char *buf, size_t count,
+ const char *method)
+{
+ int rv, value;
+ int out = 0;
+
+ rv = parse_arg(buf, count, &value);
+ if (rv > 0)
+ out = value ? 1 : 0;
+
+ if (write_acpi_int(asus->handle, method, value))
+ return -ENODEV;
+ return rv;
+}
+
+/*
+ * LEDD display
+ */
+static ssize_t ledd_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+
+ return sprintf(buf, "0x%08x\n", asus->ledd_status);
+}
+
+static ssize_t ledd_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+ int rv, value;
+
+ rv = parse_arg(buf, count, &value);
+ if (rv > 0) {
+ if (write_acpi_int(asus->handle, METHOD_LEDD, value)) {
+ pr_warn("LED display write failed\n");
+ return -ENODEV;
+ }
+ asus->ledd_status = (u32) value;
+ }
+ return rv;
+}
+static DEVICE_ATTR_RW(ledd);
+
+/*
+ * Wireless
+ */
+static int asus_wireless_status(struct asus_laptop *asus, int mask)
+{
+ unsigned long long status;
+ acpi_status rv = AE_OK;
+
+ if (!asus->have_rsts)
+ return (asus->wireless_status & mask) ? 1 : 0;
+
+ rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
+ NULL, &status);
+ if (ACPI_FAILURE(rv)) {
+ pr_warn("Error reading Wireless status\n");
+ return -EINVAL;
+ }
+ return !!(status & mask);
+}
+
+/*
+ * WLAN
+ */
+static int asus_wlan_set(struct asus_laptop *asus, int status)
+{
+ if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
+ pr_warn("Error setting wlan status to %d\n", status);
+ return -EIO;
+ }
+ return 0;
+}
+
+static ssize_t wlan_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
+}
+
+static ssize_t wlan_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+
+ return sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
+}
+static DEVICE_ATTR_RW(wlan);
+
+/*e
+ * Bluetooth
+ */
+static int asus_bluetooth_set(struct asus_laptop *asus, int status)
+{
+ if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
+ pr_warn("Error setting bluetooth status to %d\n", status);
+ return -EIO;
+ }
+ return 0;
+}
+
+static ssize_t bluetooth_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
+}
+
+static ssize_t bluetooth_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+
+ return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
+}
+static DEVICE_ATTR_RW(bluetooth);
+
+/*
+ * Wimax
+ */
+static int asus_wimax_set(struct asus_laptop *asus, int status)
+{
+ if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) {
+ pr_warn("Error setting wimax status to %d\n", status);
+ return -EIO;
+ }
+ return 0;
+}
+
+static ssize_t wimax_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
+}
+
+static ssize_t wimax_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+
+ return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX);
+}
+static DEVICE_ATTR_RW(wimax);
+
+/*
+ * Wwan
+ */
+static int asus_wwan_set(struct asus_laptop *asus, int status)
+{
+ if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) {
+ pr_warn("Error setting wwan status to %d\n", status);
+ return -EIO;
+ }
+ return 0;
+}
+
+static ssize_t wwan_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
+}
+
+static ssize_t wwan_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+
+ return sysfs_acpi_set(asus, buf, count, METHOD_WWAN);
+}
+static DEVICE_ATTR_RW(wwan);
+
+/*
+ * Display
+ */
+static void asus_set_display(struct asus_laptop *asus, int value)
+{
+ /* no sanity check needed for now */
+ if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
+ pr_warn("Error setting display\n");
+ return;
+}
+
+/*
+ * Experimental support for display switching. As of now: 1 should activate
+ * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
+ * Any combination (bitwise) of these will suffice. I never actually tested 4
+ * displays hooked up simultaneously, so be warned. See the acpi4asus README
+ * for more info.
+ */
+static ssize_t display_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+ int rv, value;
+
+ rv = parse_arg(buf, count, &value);
+ if (rv > 0)
+ asus_set_display(asus, value);
+ return rv;
+}
+static DEVICE_ATTR_WO(display);
+
+/*
+ * Light Sens
+ */
+static void asus_als_switch(struct asus_laptop *asus, int value)
+{
+ int ret;
+
+ if (asus->is_pega_lucid) {
+ ret = asus_pega_lucid_set(asus, PEGA_ALS, value);
+ if (!ret)
+ ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value);
+ } else {
+ ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value);
+ }
+ if (ret)
+ pr_warning("Error setting light sensor switch\n");
+
+ asus->light_switch = value;
+}
+
+static ssize_t ls_switch_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d\n", asus->light_switch);
+}
+
+static ssize_t ls_switch_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+ int rv, value;
+
+ rv = parse_arg(buf, count, &value);
+ if (rv > 0)
+ asus_als_switch(asus, value ? 1 : 0);
+
+ return rv;
+}
+static DEVICE_ATTR_RW(ls_switch);
+
+static void asus_als_level(struct asus_laptop *asus, int value)
+{
+ if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value))
+ pr_warn("Error setting light sensor level\n");
+ asus->light_level = value;
+}
+
+static ssize_t ls_level_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d\n", asus->light_level);
+}
+
+static ssize_t ls_level_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+ int rv, value;
+
+ rv = parse_arg(buf, count, &value);
+ if (rv > 0) {
+ value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
+ /* 0 <= value <= 15 */
+ asus_als_level(asus, value);
+ }
+
+ return rv;
+}
+static DEVICE_ATTR_RW(ls_level);
+
+static int pega_int_read(struct asus_laptop *asus, int arg, int *result)
+{
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg,
+ &buffer);
+ if (!err) {
+ union acpi_object *obj = buffer.pointer;
+ if (obj && obj->type == ACPI_TYPE_INTEGER)
+ *result = obj->integer.value;
+ else
+ err = -EIO;
+ }
+ return err;
+}
+
+static ssize_t ls_value_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+ int err, hi, lo;
+
+ err = pega_int_read(asus, PEGA_READ_ALS_H, &hi);
+ if (!err)
+ err = pega_int_read(asus, PEGA_READ_ALS_L, &lo);
+ if (!err)
+ return sprintf(buf, "%d\n", 10 * hi + lo);
+ return err;
+}
+static DEVICE_ATTR_RO(ls_value);
+
+/*
+ * GPS
+ */
+static int asus_gps_status(struct asus_laptop *asus)
+{
+ unsigned long long status;
+ acpi_status rv = AE_OK;
+
+ rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
+ NULL, &status);
+ if (ACPI_FAILURE(rv)) {
+ pr_warn("Error reading GPS status\n");
+ return -ENODEV;
+ }
+ return !!status;
+}
+
+static int asus_gps_switch(struct asus_laptop *asus, int status)
+{
+ const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
+
+ if (write_acpi_int(asus->handle, meth, 0x02))
+ return -ENODEV;
+ return 0;
+}
+
+static ssize_t gps_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d\n", asus_gps_status(asus));
+}
+
+static ssize_t gps_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct asus_laptop *asus = dev_get_drvdata(dev);
+ int rv, value;
+ int ret;
+
+ rv = parse_arg(buf, count, &value);
+ if (rv <= 0)
+ return -EINVAL;
+ ret = asus_gps_switch(asus, !!value);
+ if (ret)
+ return ret;
+ rfkill_set_sw_state(asus->gps.rfkill, !value);
+ return rv;
+}
+static DEVICE_ATTR_RW(gps);
+
+/*
+ * rfkill
+ */
+static int asus_gps_rfkill_set(void *data, bool blocked)
+{
+ struct asus_laptop *asus = data;
+
+ return asus_gps_switch(asus, !blocked);
+}
+
+static const struct rfkill_ops asus_gps_rfkill_ops = {
+ .set_block = asus_gps_rfkill_set,
+};
+
+static int asus_rfkill_set(void *data, bool blocked)
+{
+ struct asus_rfkill *rfk = data;
+ struct asus_laptop *asus = rfk->asus;
+
+ if (rfk->control_id == WL_RSTS)
+ return asus_wlan_set(asus, !blocked);
+ else if (rfk->control_id == BT_RSTS)
+ return asus_bluetooth_set(asus, !blocked);
+ else if (rfk->control_id == WM_RSTS)
+ return asus_wimax_set(asus, !blocked);
+ else if (rfk->control_id == WW_RSTS)
+ return asus_wwan_set(asus, !blocked);
+
+ return -EINVAL;
+}
+
+static const struct rfkill_ops asus_rfkill_ops = {
+ .set_block = asus_rfkill_set,
+};
+
+static void asus_rfkill_terminate(struct asus_rfkill *rfk)
+{
+ if (!rfk->rfkill)
+ return ;
+
+ rfkill_unregister(rfk->rfkill);
+ rfkill_destroy(rfk->rfkill);
+ rfk->rfkill = NULL;
+}
+
+static void asus_rfkill_exit(struct asus_laptop *asus)
+{
+ asus_rfkill_terminate(&asus->wwan);
+ asus_rfkill_terminate(&asus->bluetooth);
+ asus_rfkill_terminate(&asus->wlan);
+ asus_rfkill_terminate(&asus->gps);
+}
+
+static int asus_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
+ const char *name, int control_id, int type,
+ const struct rfkill_ops *ops)
+{
+ int result;
+
+ rfk->control_id = control_id;
+ rfk->asus = asus;
+ rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev,
+ type, ops, rfk);
+ if (!rfk->rfkill)
+ return -EINVAL;
+
+ result = rfkill_register(rfk->rfkill);
+ if (result) {
+ rfkill_destroy(rfk->rfkill);
+ rfk->rfkill = NULL;
+ }
+
+ return result;
+}
+
+static int asus_rfkill_init(struct asus_laptop *asus)
+{
+ int result = 0;
+
+ if (asus->is_pega_lucid)
+ return -ENODEV;
+
+ if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
+ !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
+ !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
+ result = asus_rfkill_setup(asus, &asus->gps, "asus-gps",
+ -1, RFKILL_TYPE_GPS,
+ &asus_gps_rfkill_ops);
+ if (result)
+ goto exit;
+
+
+ if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL) &&
+ asus->wled_type == TYPE_RFKILL)
+ result = asus_rfkill_setup(asus, &asus->wlan, "asus-wlan",
+ WL_RSTS, RFKILL_TYPE_WLAN,
+ &asus_rfkill_ops);
+ if (result)
+ goto exit;
+
+ if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL) &&
+ asus->bled_type == TYPE_RFKILL)
+ result = asus_rfkill_setup(asus, &asus->bluetooth,
+ "asus-bluetooth", BT_RSTS,
+ RFKILL_TYPE_BLUETOOTH,
+ &asus_rfkill_ops);
+ if (result)
+ goto exit;
+
+ if (!acpi_check_handle(asus->handle, METHOD_WWAN, NULL))
+ result = asus_rfkill_setup(asus, &asus->wwan, "asus-wwan",
+ WW_RSTS, RFKILL_TYPE_WWAN,
+ &asus_rfkill_ops);
+ if (result)
+ goto exit;
+
+ if (!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL))
+ result = asus_rfkill_setup(asus, &asus->wimax, "asus-wimax",
+ WM_RSTS, RFKILL_TYPE_WIMAX,
+ &asus_rfkill_ops);
+ if (result)
+ goto exit;
+
+exit:
+ if (result)
+ asus_rfkill_exit(asus);
+
+ return result;
+}
+
+static int pega_rfkill_set(void *data, bool blocked)
+{
+ struct asus_rfkill *rfk = data;
+
+ int ret = asus_pega_lucid_set(rfk->asus, rfk->control_id, !blocked);
+ return ret;
+}
+
+static const struct rfkill_ops pega_rfkill_ops = {
+ .set_block = pega_rfkill_set,
+};
+
+static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
+ const char *name, int controlid, int rfkill_type)
+{
+ return asus_rfkill_setup(asus, rfk, name, controlid, rfkill_type,
+ &pega_rfkill_ops);
+}
+
+static int pega_rfkill_init(struct asus_laptop *asus)
+{
+ int ret = 0;
+
+ if(!asus->is_pega_lucid)
+ return -ENODEV;
+
+ ret = pega_rfkill_setup(asus, &asus->wlan, "pega-wlan",
+ PEGA_WLAN, RFKILL_TYPE_WLAN);
+ if(ret)
+ goto exit;
+
+ ret = pega_rfkill_setup(asus, &asus->bluetooth, "pega-bt",
+ PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH);
+ if(ret)
+ goto exit;
+
+ ret = pega_rfkill_setup(asus, &asus->wwan, "pega-wwan",
+ PEGA_WWAN, RFKILL_TYPE_WWAN);
+
+exit:
+ if (ret)
+ asus_rfkill_exit(asus);
+
+ return ret;
+}
+
+/*
+ * Input device (i.e. hotkeys)
+ */
+static void asus_input_notify(struct asus_laptop *asus, int event)
+{
+ if (!asus->inputdev)
+ return ;
+ if (!sparse_keymap_report_event(asus->inputdev, event, 1, true))
+ pr_info("Unknown key %x pressed\n", event);
+}
+
+static int asus_input_init(struct asus_laptop *asus)
+{
+ struct input_dev *input;
+ int error;
+
+ input = input_allocate_device();
+ if (!input)
+ return -ENOMEM;
+
+ input->name = "Asus Laptop extra buttons";
+ input->phys = ASUS_LAPTOP_FILE "/input0";
+ input->id.bustype = BUS_HOST;
+ input->dev.parent = &asus->platform_device->dev;
+
+ error = sparse_keymap_setup(input, asus_keymap, NULL);
+ if (error) {
+ pr_err("Unable to setup input device keymap\n");
+ goto err_free_dev;
+ }
+ error = input_register_device(input);
+ if (error) {
+ pr_warn("Unable to register input device\n");
+ goto err_free_keymap;
+ }
+
+ asus->inputdev = input;
+ return 0;
+
+err_free_keymap:
+ sparse_keymap_free(input);
+err_free_dev:
+ input_free_device(input);
+ return error;
+}
+
+static void asus_input_exit(struct asus_laptop *asus)
+{
+ if (asus->inputdev) {
+ sparse_keymap_free(asus->inputdev);
+ input_unregister_device(asus->inputdev);
+ }
+ asus->inputdev = NULL;
+}
+
+/*
+ * ACPI driver
+ */
+static void asus_acpi_notify(struct acpi_device *device, u32 event)
+{
+ struct asus_laptop *asus = acpi_driver_data(device);
+ u16 count;
+
+ /* TODO Find a better way to handle events count. */
+ count = asus->event_count[event % 128]++;
+ acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
+ dev_name(&asus->device->dev), event,
+ count);
+
+ if (event >= ATKD_BRNUP_MIN && event <= ATKD_BRNUP_MAX)
+ event = ATKD_BRNUP;
+ else if (event >= ATKD_BRNDOWN_MIN &&
+ event <= ATKD_BRNDOWN_MAX)
+ event = ATKD_BRNDOWN;
+
+ /* Brightness events are special */
+ if (event == ATKD_BRNDOWN || event == ATKD_BRNUP) {
+ if (asus->backlight_device != NULL) {
+ /* Update the backlight device. */
+ asus_backlight_notify(asus);
+ return ;
+ }
+ }
+
+ /* Accelerometer "coarse orientation change" event */
+ if (asus->pega_accel_poll && event == 0xEA) {
+ kobject_uevent(&asus->pega_accel_poll->input->dev.kobj,
+ KOBJ_CHANGE);
+ return ;
+ }
+
+ asus_input_notify(asus, event);
+}
+
+static struct attribute *asus_attributes[] = {
+ &dev_attr_infos.attr,
+ &dev_attr_wlan.attr,
+ &dev_attr_bluetooth.attr,
+ &dev_attr_wimax.attr,
+ &dev_attr_wwan.attr,
+ &dev_attr_display.attr,
+ &dev_attr_ledd.attr,
+ &dev_attr_ls_value.attr,
+ &dev_attr_ls_level.attr,
+ &dev_attr_ls_switch.attr,
+ &dev_attr_gps.attr,
+ NULL
+};
+
+static umode_t asus_sysfs_is_visible(struct kobject *kobj,
+ struct attribute *attr,
+ int idx)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct platform_device *pdev = to_platform_device(dev);
+ struct asus_laptop *asus = platform_get_drvdata(pdev);
+ acpi_handle handle = asus->handle;
+ bool supported;
+
+ if (asus->is_pega_lucid) {
+ /* no ls_level interface on the Lucid */
+ if (attr == &dev_attr_ls_switch.attr)
+ supported = true;
+ else if (attr == &dev_attr_ls_level.attr)
+ supported = false;
+ else
+ goto normal;
+
+ return supported ? attr->mode : 0;
+ }
+
+normal:
+ if (attr == &dev_attr_wlan.attr) {
+ supported = !acpi_check_handle(handle, METHOD_WLAN, NULL);
+
+ } else if (attr == &dev_attr_bluetooth.attr) {
+ supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL);
+
+ } else if (attr == &dev_attr_display.attr) {
+ supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL);
+
+ } else if (attr == &dev_attr_wimax.attr) {
+ supported =
+ !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL);
+
+ } else if (attr == &dev_attr_wwan.attr) {
+ supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL);
+
+ } else if (attr == &dev_attr_ledd.attr) {
+ supported = !acpi_check_handle(handle, METHOD_LEDD, NULL);
+
+ } else if (attr == &dev_attr_ls_switch.attr ||
+ attr == &dev_attr_ls_level.attr) {
+ supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) &&
+ !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL);
+ } else if (attr == &dev_attr_ls_value.attr) {
+ supported = asus->is_pega_lucid;
+ } else if (attr == &dev_attr_gps.attr) {
+ supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) &&
+ !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) &&
+ !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL);
+ } else {
+ supported = true;
+ }
+
+ return supported ? attr->mode : 0;
+}
+
+
+static const struct attribute_group asus_attr_group = {
+ .is_visible = asus_sysfs_is_visible,
+ .attrs = asus_attributes,
+};
+
+static int asus_platform_init(struct asus_laptop *asus)
+{
+ int result;
+
+ asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
+ if (!asus->platform_device)
+ return -ENOMEM;
+ platform_set_drvdata(asus->platform_device, asus);
+
+ result = platform_device_add(asus->platform_device);
+ if (result)
+ goto fail_platform_device;
+
+ result = sysfs_create_group(&asus->platform_device->dev.kobj,
+ &asus_attr_group);
+ if (result)
+ goto fail_sysfs;
+
+ return 0;
+
+fail_sysfs:
+ platform_device_del(asus->platform_device);
+fail_platform_device:
+ platform_device_put(asus->platform_device);
+ return result;
+}
+
+static void asus_platform_exit(struct asus_laptop *asus)
+{
+ sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group);
+ platform_device_unregister(asus->platform_device);
+}
+
+static struct platform_driver platform_driver = {
+ .driver = {
+ .name = ASUS_LAPTOP_FILE,
+ },
+};
+
+/*
+ * This function is used to initialize the context with right values. In this
+ * method, we can make all the detection we want, and modify the asus_laptop
+ * struct
+ */
+static int asus_laptop_get_info(struct asus_laptop *asus)
+{
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *model = NULL;
+ unsigned long long bsts_result;
+ char *string = NULL;
+ acpi_status status;
+
+ /*
+ * Get DSDT headers early enough to allow for differentiating between
+ * models, but late enough to allow acpi_bus_register_driver() to fail
+ * before doing anything ACPI-specific. Should we encounter a machine,
+ * which needs special handling (i.e. its hotkey device has a different
+ * HID), this bit will be moved.
+ */
+ status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
+ if (ACPI_FAILURE(status))
+ pr_warn("Couldn't get the DSDT table header\n");
+
+ /* We have to write 0 on init this far for all ASUS models */
+ if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
+ pr_err("Hotkey initialization failed\n");
+ return -ENODEV;
+ }
+
+ /* This needs to be called for some laptops to init properly */
+ status =
+ acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
+ if (ACPI_FAILURE(status))
+ pr_warn("Error calling BSTS\n");
+ else if (bsts_result)
+ pr_notice("BSTS called, 0x%02x returned\n",
+ (uint) bsts_result);
+
+ /* This too ... */
+ if (write_acpi_int(asus->handle, "CWAP", wapf))
+ pr_err("Error calling CWAP(%d)\n", wapf);
+ /*
+ * Try to match the object returned by INIT to the specific model.
+ * Handle every possible object (or the lack of thereof) the DSDT
+ * writers might throw at us. When in trouble, we pass NULL to
+ * asus_model_match() and try something completely different.
+ */
+ if (buffer.pointer) {
+ model = buffer.pointer;
+ switch (model->type) {
+ case ACPI_TYPE_STRING:
+ string = model->string.pointer;
+ break;
+ case ACPI_TYPE_BUFFER:
+ string = model->buffer.pointer;
+ break;
+ default:
+ string = "";
+ break;
+ }
+ }
+ asus->name = kstrdup(string, GFP_KERNEL);
+ if (!asus->name) {
+ kfree(buffer.pointer);
+ return -ENOMEM;
+ }
+
+ if (string)
+ pr_notice(" %s model detected\n", string);
+
+ if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL))
+ asus->have_rsts = true;
+
+ kfree(model);
+
+ return AE_OK;
+}
+
+static int asus_acpi_init(struct asus_laptop *asus)
+{
+ int result = 0;
+
+ result = acpi_bus_get_status(asus->device);
+ if (result)
+ return result;
+ if (!asus->device->status.present) {
+ pr_err("Hotkey device not present, aborting\n");
+ return -ENODEV;
+ }
+
+ result = asus_laptop_get_info(asus);
+ if (result)
+ return result;
+
+ if (!strcmp(bled_type, "led"))
+ asus->bled_type = TYPE_LED;
+ else if (!strcmp(bled_type, "rfkill"))
+ asus->bled_type = TYPE_RFKILL;
+
+ if (!strcmp(wled_type, "led"))
+ asus->wled_type = TYPE_LED;
+ else if (!strcmp(wled_type, "rfkill"))
+ asus->wled_type = TYPE_RFKILL;
+
+ if (bluetooth_status >= 0)
+ asus_bluetooth_set(asus, !!bluetooth_status);
+
+ if (wlan_status >= 0)
+ asus_wlan_set(asus, !!wlan_status);
+
+ if (wimax_status >= 0)
+ asus_wimax_set(asus, !!wimax_status);
+
+ if (wwan_status >= 0)
+ asus_wwan_set(asus, !!wwan_status);
+
+ /* Keyboard Backlight is on by default */
+ if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL))
+ asus_kled_set(asus, 1);
+
+ /* LED display is off by default */
+ asus->ledd_status = 0xFFF;
+
+ /* Set initial values of light sensor and level */
+ asus->light_switch = !!als_status;
+ asus->light_level = 5; /* level 5 for sensor sensitivity */
+
+ if (asus->is_pega_lucid) {
+ asus_als_switch(asus, asus->light_switch);
+ } else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
+ !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
+ asus_als_switch(asus, asus->light_switch);
+ asus_als_level(asus, asus->light_level);
+ }
+
+ return result;
+}
+
+static void asus_dmi_check(void)
+{
+ const char *model;
+
+ model = dmi_get_system_info(DMI_PRODUCT_NAME);
+ if (!model)
+ return;
+
+ /* On L1400B WLED control the sound card, don't mess with it ... */
+ if (strncmp(model, "L1400B", 6) == 0) {
+ wlan_status = -1;
+ }
+}
+
+static bool asus_device_present;
+
+static int asus_acpi_add(struct acpi_device *device)
+{
+ struct asus_laptop *asus;
+ int result;
+
+ pr_notice("Asus Laptop Support version %s\n",
+ ASUS_LAPTOP_VERSION);
+ asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
+ if (!asus)
+ return -ENOMEM;
+ asus->handle = device->handle;
+ strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
+ strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
+ device->driver_data = asus;
+ asus->device = device;
+
+ asus_dmi_check();
+
+ result = asus_acpi_init(asus);
+ if (result)
+ goto fail_platform;
+
+ /*
+ * Need platform type detection first, then the platform
+ * device. It is used as a parent for the sub-devices below.
+ */
+ asus->is_pega_lucid = asus_check_pega_lucid(asus);
+ result = asus_platform_init(asus);
+ if (result)
+ goto fail_platform;
+
+ if (!acpi_video_backlight_support()) {
+ result = asus_backlight_init(asus);
+ if (result)
+ goto fail_backlight;
+ } else
+ pr_info("Backlight controlled by ACPI video driver\n");
+
+ result = asus_input_init(asus);
+ if (result)
+ goto fail_input;
+
+ result = asus_led_init(asus);
+ if (result)
+ goto fail_led;
+
+ result = asus_rfkill_init(asus);
+ if (result && result != -ENODEV)
+ goto fail_rfkill;
+
+ result = pega_accel_init(asus);
+ if (result && result != -ENODEV)
+ goto fail_pega_accel;
+
+ result = pega_rfkill_init(asus);
+ if (result && result != -ENODEV)
+ goto fail_pega_rfkill;
+
+ asus_device_present = true;
+ return 0;
+
+fail_pega_rfkill:
+ pega_accel_exit(asus);
+fail_pega_accel:
+ asus_rfkill_exit(asus);
+fail_rfkill:
+ asus_led_exit(asus);
+fail_led:
+ asus_input_exit(asus);
+fail_input:
+ asus_backlight_exit(asus);
+fail_backlight:
+ asus_platform_exit(asus);
+fail_platform:
+ kfree(asus);
+
+ return result;
+}
+
+static int asus_acpi_remove(struct acpi_device *device)
+{
+ struct asus_laptop *asus = acpi_driver_data(device);
+
+ asus_backlight_exit(asus);
+ asus_rfkill_exit(asus);
+ asus_led_exit(asus);
+ asus_input_exit(asus);
+ pega_accel_exit(asus);
+ asus_platform_exit(asus);
+
+ kfree(asus->name);
+ kfree(asus);
+ return 0;
+}
+
+static const struct acpi_device_id asus_device_ids[] = {
+ {"ATK0100", 0},
+ {"ATK0101", 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, asus_device_ids);
+
+static struct acpi_driver asus_acpi_driver = {
+ .name = ASUS_LAPTOP_NAME,
+ .class = ASUS_LAPTOP_CLASS,
+ .owner = THIS_MODULE,
+ .ids = asus_device_ids,
+ .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
+ .ops = {
+ .add = asus_acpi_add,
+ .remove = asus_acpi_remove,
+ .notify = asus_acpi_notify,
+ },
+};
+
+static int __init asus_laptop_init(void)
+{
+ int result;
+
+ result = platform_driver_register(&platform_driver);
+ if (result < 0)
+ return result;
+
+ result = acpi_bus_register_driver(&asus_acpi_driver);
+ if (result < 0)
+ goto fail_acpi_driver;
+ if (!asus_device_present) {
+ result = -ENODEV;
+ goto fail_no_device;
+ }
+ return 0;
+
+fail_no_device:
+ acpi_bus_unregister_driver(&asus_acpi_driver);
+fail_acpi_driver:
+ platform_driver_unregister(&platform_driver);
+ return result;
+}
+
+static void __exit asus_laptop_exit(void)
+{
+ acpi_bus_unregister_driver(&asus_acpi_driver);
+ platform_driver_unregister(&platform_driver);
+}
+
+module_init(asus_laptop_init);
+module_exit(asus_laptop_exit);
diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
new file mode 100644
index 000000000..abdaed34c
--- /dev/null
+++ b/drivers/platform/x86/asus-nb-wmi.c
@@ -0,0 +1,384 @@
+/*
+ * Asus Notebooks WMI hotkey driver
+ *
+ * Copyright(C) 2010 Corentin Chary <corentin.chary@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/fb.h>
+#include <linux/dmi.h>
+
+#include "asus-wmi.h"
+
+#define ASUS_NB_WMI_FILE "asus-nb-wmi"
+
+MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>");
+MODULE_DESCRIPTION("Asus Notebooks WMI Hotkey Driver");
+MODULE_LICENSE("GPL");
+
+#define ASUS_NB_WMI_EVENT_GUID "0B3CBB35-E3C2-45ED-91C2-4C5A6D195D1C"
+
+MODULE_ALIAS("wmi:"ASUS_NB_WMI_EVENT_GUID);
+
+/*
+ * WAPF defines the behavior of the Fn+Fx wlan key
+ * The significance of values is yet to be found, but
+ * most of the time:
+ * Bit | Bluetooth | WLAN
+ * 0 | Hardware | Hardware
+ * 1 | Hardware | Software
+ * 4 | Software | Software
+ */
+static int wapf = -1;
+module_param(wapf, uint, 0444);
+MODULE_PARM_DESC(wapf, "WAPF value");
+
+static struct quirk_entry *quirks;
+
+static struct quirk_entry quirk_asus_unknown = {
+ .wapf = 0,
+};
+
+/*
+ * For those machines that need software to control bt/wifi status
+ * and can't adjust brightness through ACPI interface
+ * and have duplicate events(ACPI and WMI) for display toggle
+ */
+static struct quirk_entry quirk_asus_x55u = {
+ .wapf = 4,
+ .wmi_backlight_power = true,
+ .no_display_toggle = true,
+};
+
+static struct quirk_entry quirk_asus_wapf4 = {
+ .wapf = 4,
+};
+
+static struct quirk_entry quirk_asus_x200ca = {
+ .wapf = 2,
+};
+
+static int dmi_matched(const struct dmi_system_id *dmi)
+{
+ quirks = dmi->driver_data;
+ return 1;
+}
+
+static const struct dmi_system_id asus_quirks[] = {
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. U32U",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "U32U"),
+ },
+ /*
+ * Note this machine has a Brazos APU, and most Brazos Asus
+ * machines need quirk_asus_x55u / wmi_backlight_power but
+ * here acpi-video seems to work fine for backlight control.
+ */
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X401U",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X401U"),
+ },
+ .driver_data = &quirk_asus_x55u,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X401A",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X401A"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X401A1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X401A1"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X501U",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X501U"),
+ },
+ .driver_data = &quirk_asus_x55u,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X501A",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X501A"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X501A1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X501A1"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X550CA",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X550CA"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X550CC",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X550CC"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X550CL",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X550CL"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X550VB",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X550VB"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X551CA",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X551CA"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X55A",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X55A"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X55C",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X55C"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X55U",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X55U"),
+ },
+ .driver_data = &quirk_asus_x55u,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X55VD",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X55VD"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X75A",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X75A"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X75VBP",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X75VBP"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. 1015E",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "1015E"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. 1015U",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "1015U"),
+ },
+ .driver_data = &quirk_asus_wapf4,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK COMPUTER INC. X200CA",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X200CA"),
+ },
+ .driver_data = &quirk_asus_x200ca,
+ },
+ {},
+};
+
+static void asus_nb_wmi_quirks(struct asus_wmi_driver *driver)
+{
+ quirks = &quirk_asus_unknown;
+ dmi_check_system(asus_quirks);
+
+ driver->quirks = quirks;
+ driver->panel_power = FB_BLANK_UNBLANK;
+
+ /* overwrite the wapf setting if the wapf paramater is specified */
+ if (wapf != -1)
+ quirks->wapf = wapf;
+ else
+ wapf = quirks->wapf;
+}
+
+static const struct key_entry asus_nb_wmi_keymap[] = {
+ { KE_KEY, ASUS_WMI_BRN_DOWN, { KEY_BRIGHTNESSDOWN } },
+ { KE_KEY, ASUS_WMI_BRN_UP, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, 0x30, { KEY_VOLUMEUP } },
+ { KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
+ { KE_KEY, 0x32, { KEY_MUTE } },
+ { KE_KEY, 0x33, { KEY_DISPLAYTOGGLE } }, /* LCD on */
+ { KE_KEY, 0x34, { KEY_DISPLAY_OFF } }, /* LCD off */
+ { KE_KEY, 0x40, { KEY_PREVIOUSSONG } },
+ { KE_KEY, 0x41, { KEY_NEXTSONG } },
+ { KE_KEY, 0x43, { KEY_STOPCD } }, /* Stop/Eject */
+ { KE_KEY, 0x45, { KEY_PLAYPAUSE } },
+ { KE_KEY, 0x4c, { KEY_MEDIA } }, /* WMP Key */
+ { KE_KEY, 0x50, { KEY_EMAIL } },
+ { KE_KEY, 0x51, { KEY_WWW } },
+ { KE_KEY, 0x55, { KEY_CALC } },
+ { KE_IGNORE, 0x57, }, /* Battery mode */
+ { KE_IGNORE, 0x58, }, /* AC mode */
+ { KE_KEY, 0x5C, { KEY_F15 } }, /* Power Gear key */
+ { KE_KEY, 0x5D, { KEY_WLAN } }, /* Wireless console Toggle */
+ { KE_KEY, 0x5E, { KEY_WLAN } }, /* Wireless console Enable */
+ { KE_KEY, 0x5F, { KEY_WLAN } }, /* Wireless console Disable */
+ { KE_KEY, 0x60, { KEY_TOUCHPAD_ON } },
+ { KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD only */
+ { KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT only */
+ { KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT */
+ { KE_KEY, 0x64, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV */
+ { KE_KEY, 0x65, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV */
+ { KE_KEY, 0x66, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV */
+ { KE_KEY, 0x67, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV */
+ { KE_KEY, 0x6B, { KEY_TOUCHPAD_TOGGLE } },
+ { KE_IGNORE, 0x6E, }, /* Low Battery notification */
+ { KE_KEY, 0x7D, { KEY_BLUETOOTH } }, /* Bluetooth Enable */
+ { KE_KEY, 0x7E, { KEY_BLUETOOTH } }, /* Bluetooth Disable */
+ { KE_KEY, 0x82, { KEY_CAMERA } },
+ { KE_KEY, 0x88, { KEY_RFKILL } }, /* Radio Toggle Key */
+ { KE_KEY, 0x8A, { KEY_PROG1 } }, /* Color enhancement mode */
+ { KE_KEY, 0x8C, { KEY_SWITCHVIDEOMODE } }, /* SDSP DVI only */
+ { KE_KEY, 0x8D, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + DVI */
+ { KE_KEY, 0x8E, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + DVI */
+ { KE_KEY, 0x8F, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + DVI */
+ { KE_KEY, 0x90, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + DVI */
+ { KE_KEY, 0x91, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + DVI */
+ { KE_KEY, 0x92, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + DVI */
+ { KE_KEY, 0x93, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + DVI */
+ { KE_KEY, 0x95, { KEY_MEDIA } },
+ { KE_KEY, 0x99, { KEY_PHONE } },
+ { KE_KEY, 0xA0, { KEY_SWITCHVIDEOMODE } }, /* SDSP HDMI only */
+ { KE_KEY, 0xA1, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + HDMI */
+ { KE_KEY, 0xA2, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + HDMI */
+ { KE_KEY, 0xA3, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + HDMI */
+ { KE_KEY, 0xA4, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + HDMI */
+ { KE_KEY, 0xA5, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + HDMI */
+ { KE_KEY, 0xA6, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + HDMI */
+ { KE_KEY, 0xA7, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + HDMI */
+ { KE_KEY, 0xB5, { KEY_CALC } },
+ { KE_KEY, 0xC4, { KEY_KBDILLUMUP } },
+ { KE_KEY, 0xC5, { KEY_KBDILLUMDOWN } },
+ { KE_IGNORE, 0xC6, }, /* Ambient Light Sensor notification */
+ { KE_END, 0},
+};
+
+static struct asus_wmi_driver asus_nb_wmi_driver = {
+ .name = ASUS_NB_WMI_FILE,
+ .owner = THIS_MODULE,
+ .event_guid = ASUS_NB_WMI_EVENT_GUID,
+ .keymap = asus_nb_wmi_keymap,
+ .input_name = "Asus WMI hotkeys",
+ .input_phys = ASUS_NB_WMI_FILE "/input0",
+ .detect_quirks = asus_nb_wmi_quirks,
+};
+
+
+static int __init asus_nb_wmi_init(void)
+{
+ return asus_wmi_register_driver(&asus_nb_wmi_driver);
+}
+
+static void __exit asus_nb_wmi_exit(void)
+{
+ asus_wmi_unregister_driver(&asus_nb_wmi_driver);
+}
+
+module_init(asus_nb_wmi_init);
+module_exit(asus_nb_wmi_exit);
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
new file mode 100644
index 000000000..7543a56e0
--- /dev/null
+++ b/drivers/platform/x86/asus-wmi.c
@@ -0,0 +1,1978 @@
+/*
+ * Asus PC WMI hotkey driver
+ *
+ * Copyright(C) 2010 Intel Corporation.
+ * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
+ *
+ * Portions based on wistron_btns.c:
+ * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
+ * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
+ * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+#include <linux/leds.h>
+#include <linux/rfkill.h>
+#include <linux/pci.h>
+#include <linux/pci_hotplug.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/platform_device.h>
+#include <linux/thermal.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <acpi/video.h>
+
+#include "asus-wmi.h"
+
+MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
+ "Yong Wang <yong.y.wang@intel.com>");
+MODULE_DESCRIPTION("Asus Generic WMI Driver");
+MODULE_LICENSE("GPL");
+
+#define to_platform_driver(drv) \
+ (container_of((drv), struct platform_driver, driver))
+
+#define to_asus_wmi_driver(pdrv) \
+ (container_of((pdrv), struct asus_wmi_driver, platform_driver))
+
+#define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
+
+#define NOTIFY_BRNUP_MIN 0x11
+#define NOTIFY_BRNUP_MAX 0x1f
+#define NOTIFY_BRNDOWN_MIN 0x20
+#define NOTIFY_BRNDOWN_MAX 0x2e
+#define NOTIFY_KBD_BRTUP 0xc4
+#define NOTIFY_KBD_BRTDWN 0xc5
+
+/* WMI Methods */
+#define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
+#define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
+#define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
+#define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
+#define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
+#define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
+#define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
+#define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
+#define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
+#define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
+#define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
+#define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
+#define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
+#define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
+#define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
+#define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
+#define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
+#define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
+#define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
+
+#define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
+
+/* Wireless */
+#define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
+#define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
+#define ASUS_WMI_DEVID_CWAP 0x00010003
+#define ASUS_WMI_DEVID_WLAN 0x00010011
+#define ASUS_WMI_DEVID_WLAN_LED 0x00010012
+#define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
+#define ASUS_WMI_DEVID_GPS 0x00010015
+#define ASUS_WMI_DEVID_WIMAX 0x00010017
+#define ASUS_WMI_DEVID_WWAN3G 0x00010019
+#define ASUS_WMI_DEVID_UWB 0x00010021
+
+/* Leds */
+/* 0x000200XX and 0x000400XX */
+#define ASUS_WMI_DEVID_LED1 0x00020011
+#define ASUS_WMI_DEVID_LED2 0x00020012
+#define ASUS_WMI_DEVID_LED3 0x00020013
+#define ASUS_WMI_DEVID_LED4 0x00020014
+#define ASUS_WMI_DEVID_LED5 0x00020015
+#define ASUS_WMI_DEVID_LED6 0x00020016
+
+/* Backlight and Brightness */
+#define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
+#define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
+#define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
+#define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
+
+/* Misc */
+#define ASUS_WMI_DEVID_CAMERA 0x00060013
+
+/* Storage */
+#define ASUS_WMI_DEVID_CARDREADER 0x00080013
+
+/* Input */
+#define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
+#define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
+
+/* Fan, Thermal */
+#define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
+#define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
+
+/* Power */
+#define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
+
+/* Deep S3 / Resume on LID open */
+#define ASUS_WMI_DEVID_LID_RESUME 0x00120031
+
+/* DSTS masks */
+#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
+#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
+#define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
+#define ASUS_WMI_DSTS_USER_BIT 0x00020000
+#define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
+#define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
+#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
+
+struct bios_args {
+ u32 arg0;
+ u32 arg1;
+} __packed;
+
+/*
+ * <platform>/ - debugfs root directory
+ * dev_id - current dev_id
+ * ctrl_param - current ctrl_param
+ * method_id - current method_id
+ * devs - call DEVS(dev_id, ctrl_param) and print result
+ * dsts - call DSTS(dev_id) and print result
+ * call - call method_id(dev_id, ctrl_param) and print result
+ */
+struct asus_wmi_debug {
+ struct dentry *root;
+ u32 method_id;
+ u32 dev_id;
+ u32 ctrl_param;
+};
+
+struct asus_rfkill {
+ struct asus_wmi *asus;
+ struct rfkill *rfkill;
+ u32 dev_id;
+};
+
+struct asus_wmi {
+ int dsts_id;
+ int spec;
+ int sfun;
+
+ struct input_dev *inputdev;
+ struct backlight_device *backlight_device;
+ struct platform_device *platform_device;
+
+ struct led_classdev wlan_led;
+ int wlan_led_wk;
+ struct led_classdev tpd_led;
+ int tpd_led_wk;
+ struct led_classdev kbd_led;
+ int kbd_led_wk;
+ struct workqueue_struct *led_workqueue;
+ struct work_struct tpd_led_work;
+ struct work_struct kbd_led_work;
+ struct work_struct wlan_led_work;
+
+ struct asus_rfkill wlan;
+ struct asus_rfkill bluetooth;
+ struct asus_rfkill wimax;
+ struct asus_rfkill wwan3g;
+ struct asus_rfkill gps;
+ struct asus_rfkill uwb;
+
+ struct hotplug_slot *hotplug_slot;
+ struct mutex hotplug_lock;
+ struct mutex wmi_lock;
+ struct workqueue_struct *hotplug_workqueue;
+ struct work_struct hotplug_work;
+
+ struct asus_wmi_debug debug;
+
+ struct asus_wmi_driver *driver;
+};
+
+static int asus_wmi_input_init(struct asus_wmi *asus)
+{
+ int err;
+
+ asus->inputdev = input_allocate_device();
+ if (!asus->inputdev)
+ return -ENOMEM;
+
+ asus->inputdev->name = asus->driver->input_name;
+ asus->inputdev->phys = asus->driver->input_phys;
+ asus->inputdev->id.bustype = BUS_HOST;
+ asus->inputdev->dev.parent = &asus->platform_device->dev;
+ set_bit(EV_REP, asus->inputdev->evbit);
+
+ err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
+ if (err)
+ goto err_free_dev;
+
+ err = input_register_device(asus->inputdev);
+ if (err)
+ goto err_free_keymap;
+
+ return 0;
+
+err_free_keymap:
+ sparse_keymap_free(asus->inputdev);
+err_free_dev:
+ input_free_device(asus->inputdev);
+ return err;
+}
+
+static void asus_wmi_input_exit(struct asus_wmi *asus)
+{
+ if (asus->inputdev) {
+ sparse_keymap_free(asus->inputdev);
+ input_unregister_device(asus->inputdev);
+ }
+
+ asus->inputdev = NULL;
+}
+
+static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
+ u32 *retval)
+{
+ struct bios_args args = {
+ .arg0 = arg0,
+ .arg1 = arg1,
+ };
+ struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ acpi_status status;
+ union acpi_object *obj;
+ u32 tmp = 0;
+
+ status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
+ &input, &output);
+
+ if (ACPI_FAILURE(status))
+ goto exit;
+
+ obj = (union acpi_object *)output.pointer;
+ if (obj && obj->type == ACPI_TYPE_INTEGER)
+ tmp = (u32) obj->integer.value;
+
+ if (retval)
+ *retval = tmp;
+
+ kfree(obj);
+
+exit:
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
+ return -ENODEV;
+
+ return 0;
+}
+
+static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
+{
+ return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
+}
+
+static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
+ u32 *retval)
+{
+ return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
+ ctrl_param, retval);
+}
+
+/* Helper for special devices with magic return codes */
+static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
+ u32 dev_id, u32 mask)
+{
+ u32 retval = 0;
+ int err;
+
+ err = asus_wmi_get_devstate(asus, dev_id, &retval);
+
+ if (err < 0)
+ return err;
+
+ if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
+ return -ENODEV;
+
+ if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
+ if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
+ return -ENODEV;
+ }
+
+ return retval & mask;
+}
+
+static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
+{
+ return asus_wmi_get_devstate_bits(asus, dev_id,
+ ASUS_WMI_DSTS_STATUS_BIT);
+}
+
+/*
+ * LEDs
+ */
+/*
+ * These functions actually update the LED's, and are called from a
+ * workqueue. By doing this as separate work rather than when the LED
+ * subsystem asks, we avoid messing with the Asus ACPI stuff during a
+ * potentially bad time, such as a timer interrupt.
+ */
+static void tpd_led_update(struct work_struct *work)
+{
+ int ctrl_param;
+ struct asus_wmi *asus;
+
+ asus = container_of(work, struct asus_wmi, tpd_led_work);
+
+ ctrl_param = asus->tpd_led_wk;
+ asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
+}
+
+static void tpd_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct asus_wmi *asus;
+
+ asus = container_of(led_cdev, struct asus_wmi, tpd_led);
+
+ asus->tpd_led_wk = !!value;
+ queue_work(asus->led_workqueue, &asus->tpd_led_work);
+}
+
+static int read_tpd_led_state(struct asus_wmi *asus)
+{
+ return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
+}
+
+static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
+{
+ struct asus_wmi *asus;
+
+ asus = container_of(led_cdev, struct asus_wmi, tpd_led);
+
+ return read_tpd_led_state(asus);
+}
+
+static void kbd_led_update(struct work_struct *work)
+{
+ int ctrl_param = 0;
+ struct asus_wmi *asus;
+
+ asus = container_of(work, struct asus_wmi, kbd_led_work);
+
+ /*
+ * bits 0-2: level
+ * bit 7: light on/off
+ */
+ if (asus->kbd_led_wk > 0)
+ ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
+
+ asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
+}
+
+static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
+{
+ int retval;
+
+ /*
+ * bits 0-2: level
+ * bit 7: light on/off
+ * bit 8-10: environment (0: dark, 1: normal, 2: light)
+ * bit 17: status unknown
+ */
+ retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
+ 0xFFFF);
+
+ /* Unknown status is considered as off */
+ if (retval == 0x8000)
+ retval = 0;
+
+ if (retval >= 0) {
+ if (level)
+ *level = retval & 0x7F;
+ if (env)
+ *env = (retval >> 8) & 0x7F;
+ retval = 0;
+ }
+
+ return retval;
+}
+
+static void kbd_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct asus_wmi *asus;
+
+ asus = container_of(led_cdev, struct asus_wmi, kbd_led);
+
+ if (value > asus->kbd_led.max_brightness)
+ value = asus->kbd_led.max_brightness;
+ else if (value < 0)
+ value = 0;
+
+ asus->kbd_led_wk = value;
+ queue_work(asus->led_workqueue, &asus->kbd_led_work);
+}
+
+static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
+{
+ struct asus_wmi *asus;
+ int retval, value;
+
+ asus = container_of(led_cdev, struct asus_wmi, kbd_led);
+
+ retval = kbd_led_read(asus, &value, NULL);
+
+ if (retval < 0)
+ return retval;
+
+ return value;
+}
+
+static int wlan_led_unknown_state(struct asus_wmi *asus)
+{
+ u32 result;
+
+ asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
+
+ return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
+}
+
+static int wlan_led_presence(struct asus_wmi *asus)
+{
+ u32 result;
+
+ asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
+
+ return result & ASUS_WMI_DSTS_PRESENCE_BIT;
+}
+
+static void wlan_led_update(struct work_struct *work)
+{
+ int ctrl_param;
+ struct asus_wmi *asus;
+
+ asus = container_of(work, struct asus_wmi, wlan_led_work);
+
+ ctrl_param = asus->wlan_led_wk;
+ asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
+}
+
+static void wlan_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct asus_wmi *asus;
+
+ asus = container_of(led_cdev, struct asus_wmi, wlan_led);
+
+ asus->wlan_led_wk = !!value;
+ queue_work(asus->led_workqueue, &asus->wlan_led_work);
+}
+
+static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
+{
+ struct asus_wmi *asus;
+ u32 result;
+
+ asus = container_of(led_cdev, struct asus_wmi, wlan_led);
+ asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
+
+ return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
+}
+
+static void asus_wmi_led_exit(struct asus_wmi *asus)
+{
+ if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
+ led_classdev_unregister(&asus->kbd_led);
+ if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
+ led_classdev_unregister(&asus->tpd_led);
+ if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
+ led_classdev_unregister(&asus->wlan_led);
+ if (asus->led_workqueue)
+ destroy_workqueue(asus->led_workqueue);
+}
+
+static int asus_wmi_led_init(struct asus_wmi *asus)
+{
+ int rv = 0;
+
+ asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
+ if (!asus->led_workqueue)
+ return -ENOMEM;
+
+ if (read_tpd_led_state(asus) >= 0) {
+ INIT_WORK(&asus->tpd_led_work, tpd_led_update);
+
+ asus->tpd_led.name = "asus::touchpad";
+ asus->tpd_led.brightness_set = tpd_led_set;
+ asus->tpd_led.brightness_get = tpd_led_get;
+ asus->tpd_led.max_brightness = 1;
+
+ rv = led_classdev_register(&asus->platform_device->dev,
+ &asus->tpd_led);
+ if (rv)
+ goto error;
+ }
+
+ if (kbd_led_read(asus, NULL, NULL) >= 0) {
+ INIT_WORK(&asus->kbd_led_work, kbd_led_update);
+
+ asus->kbd_led.name = "asus::kbd_backlight";
+ asus->kbd_led.brightness_set = kbd_led_set;
+ asus->kbd_led.brightness_get = kbd_led_get;
+ asus->kbd_led.max_brightness = 3;
+
+ rv = led_classdev_register(&asus->platform_device->dev,
+ &asus->kbd_led);
+ if (rv)
+ goto error;
+ }
+
+ if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
+ INIT_WORK(&asus->wlan_led_work, wlan_led_update);
+
+ asus->wlan_led.name = "asus::wlan";
+ asus->wlan_led.brightness_set = wlan_led_set;
+ if (!wlan_led_unknown_state(asus))
+ asus->wlan_led.brightness_get = wlan_led_get;
+ asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
+ asus->wlan_led.max_brightness = 1;
+ asus->wlan_led.default_trigger = "asus-wlan";
+
+ rv = led_classdev_register(&asus->platform_device->dev,
+ &asus->wlan_led);
+ }
+
+error:
+ if (rv)
+ asus_wmi_led_exit(asus);
+
+ return rv;
+}
+
+
+/*
+ * PCI hotplug (for wlan rfkill)
+ */
+static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
+{
+ int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
+
+ if (result < 0)
+ return false;
+ return !result;
+}
+
+static void asus_rfkill_hotplug(struct asus_wmi *asus)
+{
+ struct pci_dev *dev;
+ struct pci_bus *bus;
+ bool blocked;
+ bool absent;
+ u32 l;
+
+ mutex_lock(&asus->wmi_lock);
+ blocked = asus_wlan_rfkill_blocked(asus);
+ mutex_unlock(&asus->wmi_lock);
+
+ mutex_lock(&asus->hotplug_lock);
+ pci_lock_rescan_remove();
+
+ if (asus->wlan.rfkill)
+ rfkill_set_sw_state(asus->wlan.rfkill, blocked);
+
+ if (asus->hotplug_slot) {
+ bus = pci_find_bus(0, 1);
+ if (!bus) {
+ pr_warn("Unable to find PCI bus 1?\n");
+ goto out_unlock;
+ }
+
+ if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
+ pr_err("Unable to read PCI config space?\n");
+ goto out_unlock;
+ }
+ absent = (l == 0xffffffff);
+
+ if (blocked != absent) {
+ pr_warn("BIOS says wireless lan is %s, "
+ "but the pci device is %s\n",
+ blocked ? "blocked" : "unblocked",
+ absent ? "absent" : "present");
+ pr_warn("skipped wireless hotplug as probably "
+ "inappropriate for this model\n");
+ goto out_unlock;
+ }
+
+ if (!blocked) {
+ dev = pci_get_slot(bus, 0);
+ if (dev) {
+ /* Device already present */
+ pci_dev_put(dev);
+ goto out_unlock;
+ }
+ dev = pci_scan_single_device(bus, 0);
+ if (dev) {
+ pci_bus_assign_resources(bus);
+ pci_bus_add_device(dev);
+ }
+ } else {
+ dev = pci_get_slot(bus, 0);
+ if (dev) {
+ pci_stop_and_remove_bus_device(dev);
+ pci_dev_put(dev);
+ }
+ }
+ }
+
+out_unlock:
+ pci_unlock_rescan_remove();
+ mutex_unlock(&asus->hotplug_lock);
+}
+
+static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct asus_wmi *asus = data;
+
+ if (event != ACPI_NOTIFY_BUS_CHECK)
+ return;
+
+ /*
+ * We can't call directly asus_rfkill_hotplug because most
+ * of the time WMBC is still being executed and not reetrant.
+ * There is currently no way to tell ACPICA that we want this
+ * method to be serialized, we schedule a asus_rfkill_hotplug
+ * call later, in a safer context.
+ */
+ queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
+}
+
+static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
+{
+ acpi_status status;
+ acpi_handle handle;
+
+ status = acpi_get_handle(NULL, node, &handle);
+
+ if (ACPI_SUCCESS(status)) {
+ status = acpi_install_notify_handler(handle,
+ ACPI_SYSTEM_NOTIFY,
+ asus_rfkill_notify, asus);
+ if (ACPI_FAILURE(status))
+ pr_warn("Failed to register notify on %s\n", node);
+ } else
+ return -ENODEV;
+
+ return 0;
+}
+
+static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
+{
+ acpi_status status = AE_OK;
+ acpi_handle handle;
+
+ status = acpi_get_handle(NULL, node, &handle);
+
+ if (ACPI_SUCCESS(status)) {
+ status = acpi_remove_notify_handler(handle,
+ ACPI_SYSTEM_NOTIFY,
+ asus_rfkill_notify);
+ if (ACPI_FAILURE(status))
+ pr_err("Error removing rfkill notify handler %s\n",
+ node);
+ }
+}
+
+static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
+ u8 *value)
+{
+ struct asus_wmi *asus = hotplug_slot->private;
+ int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
+
+ if (result < 0)
+ return result;
+
+ *value = !!result;
+ return 0;
+}
+
+static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
+{
+ kfree(hotplug_slot->info);
+ kfree(hotplug_slot);
+}
+
+static struct hotplug_slot_ops asus_hotplug_slot_ops = {
+ .owner = THIS_MODULE,
+ .get_adapter_status = asus_get_adapter_status,
+ .get_power_status = asus_get_adapter_status,
+};
+
+static void asus_hotplug_work(struct work_struct *work)
+{
+ struct asus_wmi *asus;
+
+ asus = container_of(work, struct asus_wmi, hotplug_work);
+ asus_rfkill_hotplug(asus);
+}
+
+static int asus_setup_pci_hotplug(struct asus_wmi *asus)
+{
+ int ret = -ENOMEM;
+ struct pci_bus *bus = pci_find_bus(0, 1);
+
+ if (!bus) {
+ pr_err("Unable to find wifi PCI bus\n");
+ return -ENODEV;
+ }
+
+ asus->hotplug_workqueue =
+ create_singlethread_workqueue("hotplug_workqueue");
+ if (!asus->hotplug_workqueue)
+ goto error_workqueue;
+
+ INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
+
+ asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
+ if (!asus->hotplug_slot)
+ goto error_slot;
+
+ asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
+ GFP_KERNEL);
+ if (!asus->hotplug_slot->info)
+ goto error_info;
+
+ asus->hotplug_slot->private = asus;
+ asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
+ asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
+ asus_get_adapter_status(asus->hotplug_slot,
+ &asus->hotplug_slot->info->adapter_status);
+
+ ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
+ if (ret) {
+ pr_err("Unable to register hotplug slot - %d\n", ret);
+ goto error_register;
+ }
+
+ return 0;
+
+error_register:
+ kfree(asus->hotplug_slot->info);
+error_info:
+ kfree(asus->hotplug_slot);
+ asus->hotplug_slot = NULL;
+error_slot:
+ destroy_workqueue(asus->hotplug_workqueue);
+error_workqueue:
+ return ret;
+}
+
+/*
+ * Rfkill devices
+ */
+static int asus_rfkill_set(void *data, bool blocked)
+{
+ struct asus_rfkill *priv = data;
+ u32 ctrl_param = !blocked;
+ u32 dev_id = priv->dev_id;
+
+ /*
+ * If the user bit is set, BIOS can't set and record the wlan status,
+ * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
+ * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
+ * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
+ * while setting the wlan status through WMI.
+ * This is also the behavior that windows app will do.
+ */
+ if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
+ priv->asus->driver->wlan_ctrl_by_user)
+ dev_id = ASUS_WMI_DEVID_WLAN_LED;
+
+ return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
+}
+
+static void asus_rfkill_query(struct rfkill *rfkill, void *data)
+{
+ struct asus_rfkill *priv = data;
+ int result;
+
+ result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
+
+ if (result < 0)
+ return;
+
+ rfkill_set_sw_state(priv->rfkill, !result);
+}
+
+static int asus_rfkill_wlan_set(void *data, bool blocked)
+{
+ struct asus_rfkill *priv = data;
+ struct asus_wmi *asus = priv->asus;
+ int ret;
+
+ /*
+ * This handler is enabled only if hotplug is enabled.
+ * In this case, the asus_wmi_set_devstate() will
+ * trigger a wmi notification and we need to wait
+ * this call to finish before being able to call
+ * any wmi method
+ */
+ mutex_lock(&asus->wmi_lock);
+ ret = asus_rfkill_set(data, blocked);
+ mutex_unlock(&asus->wmi_lock);
+ return ret;
+}
+
+static const struct rfkill_ops asus_rfkill_wlan_ops = {
+ .set_block = asus_rfkill_wlan_set,
+ .query = asus_rfkill_query,
+};
+
+static const struct rfkill_ops asus_rfkill_ops = {
+ .set_block = asus_rfkill_set,
+ .query = asus_rfkill_query,
+};
+
+static int asus_new_rfkill(struct asus_wmi *asus,
+ struct asus_rfkill *arfkill,
+ const char *name, enum rfkill_type type, int dev_id)
+{
+ int result = asus_wmi_get_devstate_simple(asus, dev_id);
+ struct rfkill **rfkill = &arfkill->rfkill;
+
+ if (result < 0)
+ return result;
+
+ arfkill->dev_id = dev_id;
+ arfkill->asus = asus;
+
+ if (dev_id == ASUS_WMI_DEVID_WLAN &&
+ asus->driver->quirks->hotplug_wireless)
+ *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
+ &asus_rfkill_wlan_ops, arfkill);
+ else
+ *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
+ &asus_rfkill_ops, arfkill);
+
+ if (!*rfkill)
+ return -EINVAL;
+
+ if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
+ (asus->driver->quirks->wapf > 0))
+ rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
+
+ rfkill_init_sw_state(*rfkill, !result);
+ result = rfkill_register(*rfkill);
+ if (result) {
+ rfkill_destroy(*rfkill);
+ *rfkill = NULL;
+ return result;
+ }
+ return 0;
+}
+
+static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
+{
+ asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
+ asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
+ asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
+ if (asus->wlan.rfkill) {
+ rfkill_unregister(asus->wlan.rfkill);
+ rfkill_destroy(asus->wlan.rfkill);
+ asus->wlan.rfkill = NULL;
+ }
+ /*
+ * Refresh pci hotplug in case the rfkill state was changed after
+ * asus_unregister_rfkill_notifier()
+ */
+ asus_rfkill_hotplug(asus);
+ if (asus->hotplug_slot)
+ pci_hp_deregister(asus->hotplug_slot);
+ if (asus->hotplug_workqueue)
+ destroy_workqueue(asus->hotplug_workqueue);
+
+ if (asus->bluetooth.rfkill) {
+ rfkill_unregister(asus->bluetooth.rfkill);
+ rfkill_destroy(asus->bluetooth.rfkill);
+ asus->bluetooth.rfkill = NULL;
+ }
+ if (asus->wimax.rfkill) {
+ rfkill_unregister(asus->wimax.rfkill);
+ rfkill_destroy(asus->wimax.rfkill);
+ asus->wimax.rfkill = NULL;
+ }
+ if (asus->wwan3g.rfkill) {
+ rfkill_unregister(asus->wwan3g.rfkill);
+ rfkill_destroy(asus->wwan3g.rfkill);
+ asus->wwan3g.rfkill = NULL;
+ }
+ if (asus->gps.rfkill) {
+ rfkill_unregister(asus->gps.rfkill);
+ rfkill_destroy(asus->gps.rfkill);
+ asus->gps.rfkill = NULL;
+ }
+ if (asus->uwb.rfkill) {
+ rfkill_unregister(asus->uwb.rfkill);
+ rfkill_destroy(asus->uwb.rfkill);
+ asus->uwb.rfkill = NULL;
+ }
+}
+
+static int asus_wmi_rfkill_init(struct asus_wmi *asus)
+{
+ int result = 0;
+
+ mutex_init(&asus->hotplug_lock);
+ mutex_init(&asus->wmi_lock);
+
+ result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
+ RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = asus_new_rfkill(asus, &asus->bluetooth,
+ "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
+ ASUS_WMI_DEVID_BLUETOOTH);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
+ RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
+ RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
+ RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
+ RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ if (!asus->driver->quirks->hotplug_wireless)
+ goto exit;
+
+ result = asus_setup_pci_hotplug(asus);
+ /*
+ * If we get -EBUSY then something else is handling the PCI hotplug -
+ * don't fail in this case
+ */
+ if (result == -EBUSY)
+ result = 0;
+
+ asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
+ asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
+ asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
+ /*
+ * Refresh pci hotplug in case the rfkill state was changed during
+ * setup.
+ */
+ asus_rfkill_hotplug(asus);
+
+exit:
+ if (result && result != -ENODEV)
+ asus_wmi_rfkill_exit(asus);
+
+ if (result == -ENODEV)
+ result = 0;
+
+ return result;
+}
+
+/*
+ * Hwmon device
+ */
+static ssize_t asus_hwmon_pwm1(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_wmi *asus = dev_get_drvdata(dev);
+ u32 value;
+ int err;
+
+ err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
+
+ if (err < 0)
+ return err;
+
+ value &= 0xFF;
+
+ if (value == 1) /* Low Speed */
+ value = 85;
+ else if (value == 2)
+ value = 170;
+ else if (value == 3)
+ value = 255;
+ else if (value != 0) {
+ pr_err("Unknown fan speed %#x\n", value);
+ value = -1;
+ }
+
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t asus_hwmon_temp1(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_wmi *asus = dev_get_drvdata(dev);
+ u32 value;
+ int err;
+
+ err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
+
+ if (err < 0)
+ return err;
+
+ value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
+
+ return sprintf(buf, "%d\n", value);
+}
+
+static DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL);
+static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
+
+static struct attribute *hwmon_attributes[] = {
+ &dev_attr_pwm1.attr,
+ &dev_attr_temp1_input.attr,
+ NULL
+};
+
+static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
+ struct attribute *attr, int idx)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct platform_device *pdev = to_platform_device(dev->parent);
+ struct asus_wmi *asus = platform_get_drvdata(pdev);
+ bool ok = true;
+ int dev_id = -1;
+ u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
+
+ if (attr == &dev_attr_pwm1.attr)
+ dev_id = ASUS_WMI_DEVID_FAN_CTRL;
+ else if (attr == &dev_attr_temp1_input.attr)
+ dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
+
+ if (dev_id != -1) {
+ int err = asus_wmi_get_devstate(asus, dev_id, &value);
+
+ if (err < 0)
+ return 0; /* can't return negative here */
+ }
+
+ if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
+ /*
+ * We need to find a better way, probably using sfun,
+ * bits or spec ...
+ * Currently we disable it if:
+ * - ASUS_WMI_UNSUPPORTED_METHOD is returned
+ * - reverved bits are non-zero
+ * - sfun and presence bit are not set
+ */
+ if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
+ || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
+ ok = false;
+ } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
+ /* If value is zero, something is clearly wrong */
+ if (value == 0)
+ ok = false;
+ }
+
+ return ok ? attr->mode : 0;
+}
+
+static struct attribute_group hwmon_attribute_group = {
+ .is_visible = asus_hwmon_sysfs_is_visible,
+ .attrs = hwmon_attributes
+};
+__ATTRIBUTE_GROUPS(hwmon_attribute);
+
+static int asus_wmi_hwmon_init(struct asus_wmi *asus)
+{
+ struct device *hwmon;
+
+ hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
+ "asus", asus,
+ hwmon_attribute_groups);
+ if (IS_ERR(hwmon)) {
+ pr_err("Could not register asus hwmon device\n");
+ return PTR_ERR(hwmon);
+ }
+ return 0;
+}
+
+/*
+ * Backlight
+ */
+static int read_backlight_power(struct asus_wmi *asus)
+{
+ int ret;
+ if (asus->driver->quirks->store_backlight_power)
+ ret = !asus->driver->panel_power;
+ else
+ ret = asus_wmi_get_devstate_simple(asus,
+ ASUS_WMI_DEVID_BACKLIGHT);
+
+ if (ret < 0)
+ return ret;
+
+ return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
+}
+
+static int read_brightness_max(struct asus_wmi *asus)
+{
+ u32 retval;
+ int err;
+
+ err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
+
+ if (err < 0)
+ return err;
+
+ retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
+ retval >>= 8;
+
+ if (!retval)
+ return -ENODEV;
+
+ return retval;
+}
+
+static int read_brightness(struct backlight_device *bd)
+{
+ struct asus_wmi *asus = bl_get_data(bd);
+ u32 retval;
+ int err;
+
+ err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
+
+ if (err < 0)
+ return err;
+
+ return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
+}
+
+static u32 get_scalar_command(struct backlight_device *bd)
+{
+ struct asus_wmi *asus = bl_get_data(bd);
+ u32 ctrl_param = 0;
+
+ if ((asus->driver->brightness < bd->props.brightness) ||
+ bd->props.brightness == bd->props.max_brightness)
+ ctrl_param = 0x00008001;
+ else if ((asus->driver->brightness > bd->props.brightness) ||
+ bd->props.brightness == 0)
+ ctrl_param = 0x00008000;
+
+ asus->driver->brightness = bd->props.brightness;
+
+ return ctrl_param;
+}
+
+static int update_bl_status(struct backlight_device *bd)
+{
+ struct asus_wmi *asus = bl_get_data(bd);
+ u32 ctrl_param;
+ int power, err = 0;
+
+ power = read_backlight_power(asus);
+ if (power != -ENODEV && bd->props.power != power) {
+ ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
+ err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
+ ctrl_param, NULL);
+ if (asus->driver->quirks->store_backlight_power)
+ asus->driver->panel_power = bd->props.power;
+
+ /* When using scalar brightness, updating the brightness
+ * will mess with the backlight power */
+ if (asus->driver->quirks->scalar_panel_brightness)
+ return err;
+ }
+
+ if (asus->driver->quirks->scalar_panel_brightness)
+ ctrl_param = get_scalar_command(bd);
+ else
+ ctrl_param = bd->props.brightness;
+
+ err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
+ ctrl_param, NULL);
+
+ return err;
+}
+
+static const struct backlight_ops asus_wmi_bl_ops = {
+ .get_brightness = read_brightness,
+ .update_status = update_bl_status,
+};
+
+static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
+{
+ struct backlight_device *bd = asus->backlight_device;
+ int old = bd->props.brightness;
+ int new = old;
+
+ if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
+ new = code - NOTIFY_BRNUP_MIN + 1;
+ else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
+ new = code - NOTIFY_BRNDOWN_MIN;
+
+ bd->props.brightness = new;
+ backlight_update_status(bd);
+ backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
+
+ return old;
+}
+
+static int asus_wmi_backlight_init(struct asus_wmi *asus)
+{
+ struct backlight_device *bd;
+ struct backlight_properties props;
+ int max;
+ int power;
+
+ max = read_brightness_max(asus);
+ if (max < 0)
+ return max;
+
+ power = read_backlight_power(asus);
+
+ if (power == -ENODEV)
+ power = FB_BLANK_UNBLANK;
+ else if (power < 0)
+ return power;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = max;
+ bd = backlight_device_register(asus->driver->name,
+ &asus->platform_device->dev, asus,
+ &asus_wmi_bl_ops, &props);
+ if (IS_ERR(bd)) {
+ pr_err("Could not register backlight device\n");
+ return PTR_ERR(bd);
+ }
+
+ asus->backlight_device = bd;
+
+ if (asus->driver->quirks->store_backlight_power)
+ asus->driver->panel_power = power;
+
+ bd->props.brightness = read_brightness(bd);
+ bd->props.power = power;
+ backlight_update_status(bd);
+
+ asus->driver->brightness = bd->props.brightness;
+
+ return 0;
+}
+
+static void asus_wmi_backlight_exit(struct asus_wmi *asus)
+{
+ backlight_device_unregister(asus->backlight_device);
+
+ asus->backlight_device = NULL;
+}
+
+static int is_display_toggle(int code)
+{
+ /* display toggle keys */
+ if ((code >= 0x61 && code <= 0x67) ||
+ (code >= 0x8c && code <= 0x93) ||
+ (code >= 0xa0 && code <= 0xa7) ||
+ (code >= 0xd0 && code <= 0xd5))
+ return 1;
+
+ return 0;
+}
+
+static void asus_wmi_notify(u32 value, void *context)
+{
+ struct asus_wmi *asus = context;
+ struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ acpi_status status;
+ int code;
+ int orig_code;
+ unsigned int key_value = 1;
+ bool autorelease = 1;
+
+ status = wmi_get_event_data(value, &response);
+ if (status != AE_OK) {
+ pr_err("bad event status 0x%x\n", status);
+ return;
+ }
+
+ obj = (union acpi_object *)response.pointer;
+
+ if (!obj || obj->type != ACPI_TYPE_INTEGER)
+ goto exit;
+
+ code = obj->integer.value;
+ orig_code = code;
+
+ if (asus->driver->key_filter) {
+ asus->driver->key_filter(asus->driver, &code, &key_value,
+ &autorelease);
+ if (code == ASUS_WMI_KEY_IGNORE)
+ goto exit;
+ }
+
+ if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
+ code = ASUS_WMI_BRN_UP;
+ else if (code >= NOTIFY_BRNDOWN_MIN &&
+ code <= NOTIFY_BRNDOWN_MAX)
+ code = ASUS_WMI_BRN_DOWN;
+
+ if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
+ if (!acpi_video_backlight_support()) {
+ asus_wmi_backlight_notify(asus, orig_code);
+ goto exit;
+ }
+ }
+
+ if (is_display_toggle(code) &&
+ asus->driver->quirks->no_display_toggle)
+ goto exit;
+
+ if (!sparse_keymap_report_event(asus->inputdev, code,
+ key_value, autorelease))
+ pr_info("Unknown key %x pressed\n", code);
+
+exit:
+ kfree(obj);
+}
+
+/*
+ * Sys helpers
+ */
+static int parse_arg(const char *buf, unsigned long count, int *val)
+{
+ if (!count)
+ return 0;
+ if (sscanf(buf, "%i", val) != 1)
+ return -EINVAL;
+ return count;
+}
+
+static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
+ const char *buf, size_t count)
+{
+ u32 retval;
+ int rv, err, value;
+
+ value = asus_wmi_get_devstate_simple(asus, devid);
+ if (value == -ENODEV) /* Check device presence */
+ return value;
+
+ rv = parse_arg(buf, count, &value);
+ err = asus_wmi_set_devstate(devid, value, &retval);
+
+ if (err < 0)
+ return err;
+
+ return rv;
+}
+
+static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
+{
+ int value = asus_wmi_get_devstate_simple(asus, devid);
+
+ if (value < 0)
+ return value;
+
+ return sprintf(buf, "%d\n", value);
+}
+
+#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
+ static ssize_t show_##_name(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+ { \
+ struct asus_wmi *asus = dev_get_drvdata(dev); \
+ \
+ return show_sys_wmi(asus, _cm, buf); \
+ } \
+ static ssize_t store_##_name(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+ { \
+ struct asus_wmi *asus = dev_get_drvdata(dev); \
+ \
+ return store_sys_wmi(asus, _cm, buf, count); \
+ } \
+ static struct device_attribute dev_attr_##_name = { \
+ .attr = { \
+ .name = __stringify(_name), \
+ .mode = _mode }, \
+ .show = show_##_name, \
+ .store = store_##_name, \
+ }
+
+ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
+ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
+ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
+ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
+
+static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int value, rv;
+
+ if (!count || sscanf(buf, "%i", &value) != 1)
+ return -EINVAL;
+ if (value < 0 || value > 2)
+ return -EINVAL;
+
+ rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
+ if (rv < 0)
+ return rv;
+
+ return count;
+}
+
+static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
+
+static struct attribute *platform_attributes[] = {
+ &dev_attr_cpufv.attr,
+ &dev_attr_camera.attr,
+ &dev_attr_cardr.attr,
+ &dev_attr_touchpad.attr,
+ &dev_attr_lid_resume.attr,
+ NULL
+};
+
+static umode_t asus_sysfs_is_visible(struct kobject *kobj,
+ struct attribute *attr, int idx)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct platform_device *pdev = to_platform_device(dev);
+ struct asus_wmi *asus = platform_get_drvdata(pdev);
+ bool ok = true;
+ int devid = -1;
+
+ if (attr == &dev_attr_camera.attr)
+ devid = ASUS_WMI_DEVID_CAMERA;
+ else if (attr == &dev_attr_cardr.attr)
+ devid = ASUS_WMI_DEVID_CARDREADER;
+ else if (attr == &dev_attr_touchpad.attr)
+ devid = ASUS_WMI_DEVID_TOUCHPAD;
+ else if (attr == &dev_attr_lid_resume.attr)
+ devid = ASUS_WMI_DEVID_LID_RESUME;
+
+ if (devid != -1)
+ ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
+
+ return ok ? attr->mode : 0;
+}
+
+static struct attribute_group platform_attribute_group = {
+ .is_visible = asus_sysfs_is_visible,
+ .attrs = platform_attributes
+};
+
+static void asus_wmi_sysfs_exit(struct platform_device *device)
+{
+ sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
+}
+
+static int asus_wmi_sysfs_init(struct platform_device *device)
+{
+ return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
+}
+
+/*
+ * Platform device
+ */
+static int asus_wmi_platform_init(struct asus_wmi *asus)
+{
+ int rv;
+
+ /* INIT enable hotkeys on some models */
+ if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
+ pr_info("Initialization: %#x\n", rv);
+
+ /* We don't know yet what to do with this version... */
+ if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
+ pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
+ asus->spec = rv;
+ }
+
+ /*
+ * The SFUN method probably allows the original driver to get the list
+ * of features supported by a given model. For now, 0x0100 or 0x0800
+ * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
+ * The significance of others is yet to be found.
+ */
+ if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
+ pr_info("SFUN value: %#x\n", rv);
+ asus->sfun = rv;
+ }
+
+ /*
+ * Eee PC and Notebooks seems to have different method_id for DSTS,
+ * but it may also be related to the BIOS's SPEC.
+ * Note, on most Eeepc, there is no way to check if a method exist
+ * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
+ * but once again, SPEC may probably be used for that kind of things.
+ */
+ if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
+ asus->dsts_id = ASUS_WMI_METHODID_DSTS;
+ else
+ asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
+
+ /* CWAP allow to define the behavior of the Fn+F2 key,
+ * this method doesn't seems to be present on Eee PCs */
+ if (asus->driver->quirks->wapf >= 0)
+ asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
+ asus->driver->quirks->wapf, NULL);
+
+ return asus_wmi_sysfs_init(asus->platform_device);
+}
+
+static void asus_wmi_platform_exit(struct asus_wmi *asus)
+{
+ asus_wmi_sysfs_exit(asus->platform_device);
+}
+
+/*
+ * debugfs
+ */
+struct asus_wmi_debugfs_node {
+ struct asus_wmi *asus;
+ char *name;
+ int (*show) (struct seq_file *m, void *data);
+};
+
+static int show_dsts(struct seq_file *m, void *data)
+{
+ struct asus_wmi *asus = m->private;
+ int err;
+ u32 retval = -1;
+
+ err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
+
+ if (err < 0)
+ return err;
+
+ seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
+
+ return 0;
+}
+
+static int show_devs(struct seq_file *m, void *data)
+{
+ struct asus_wmi *asus = m->private;
+ int err;
+ u32 retval = -1;
+
+ err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
+ &retval);
+
+ if (err < 0)
+ return err;
+
+ seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
+ asus->debug.ctrl_param, retval);
+
+ return 0;
+}
+
+static int show_call(struct seq_file *m, void *data)
+{
+ struct asus_wmi *asus = m->private;
+ struct bios_args args = {
+ .arg0 = asus->debug.dev_id,
+ .arg1 = asus->debug.ctrl_param,
+ };
+ struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ acpi_status status;
+
+ status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
+ 1, asus->debug.method_id,
+ &input, &output);
+
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ obj = (union acpi_object *)output.pointer;
+ if (obj && obj->type == ACPI_TYPE_INTEGER)
+ seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
+ asus->debug.dev_id, asus->debug.ctrl_param,
+ (u32) obj->integer.value);
+ else
+ seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
+ asus->debug.dev_id, asus->debug.ctrl_param,
+ obj ? obj->type : -1);
+
+ kfree(obj);
+
+ return 0;
+}
+
+static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
+ {NULL, "devs", show_devs},
+ {NULL, "dsts", show_dsts},
+ {NULL, "call", show_call},
+};
+
+static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
+{
+ struct asus_wmi_debugfs_node *node = inode->i_private;
+
+ return single_open(file, node->show, node->asus);
+}
+
+static const struct file_operations asus_wmi_debugfs_io_ops = {
+ .owner = THIS_MODULE,
+ .open = asus_wmi_debugfs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
+{
+ debugfs_remove_recursive(asus->debug.root);
+}
+
+static int asus_wmi_debugfs_init(struct asus_wmi *asus)
+{
+ struct dentry *dent;
+ int i;
+
+ asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
+ if (!asus->debug.root) {
+ pr_err("failed to create debugfs directory\n");
+ goto error_debugfs;
+ }
+
+ dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
+ asus->debug.root, &asus->debug.method_id);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
+ asus->debug.root, &asus->debug.dev_id);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
+ asus->debug.root, &asus->debug.ctrl_param);
+ if (!dent)
+ goto error_debugfs;
+
+ for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
+ struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
+
+ node->asus = asus;
+ dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
+ asus->debug.root, node,
+ &asus_wmi_debugfs_io_ops);
+ if (!dent) {
+ pr_err("failed to create debug file: %s\n", node->name);
+ goto error_debugfs;
+ }
+ }
+
+ return 0;
+
+error_debugfs:
+ asus_wmi_debugfs_exit(asus);
+ return -ENOMEM;
+}
+
+/*
+ * WMI Driver
+ */
+static int asus_wmi_add(struct platform_device *pdev)
+{
+ struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
+ struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
+ struct asus_wmi *asus;
+ const char *chassis_type;
+ acpi_status status;
+ int err;
+ u32 result;
+
+ asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
+ if (!asus)
+ return -ENOMEM;
+
+ asus->driver = wdrv;
+ asus->platform_device = pdev;
+ wdrv->platform_device = pdev;
+ platform_set_drvdata(asus->platform_device, asus);
+
+ if (wdrv->detect_quirks)
+ wdrv->detect_quirks(asus->driver);
+
+ err = asus_wmi_platform_init(asus);
+ if (err)
+ goto fail_platform;
+
+ err = asus_wmi_input_init(asus);
+ if (err)
+ goto fail_input;
+
+ err = asus_wmi_hwmon_init(asus);
+ if (err)
+ goto fail_hwmon;
+
+ err = asus_wmi_led_init(asus);
+ if (err)
+ goto fail_leds;
+
+ err = asus_wmi_rfkill_init(asus);
+ if (err)
+ goto fail_rfkill;
+
+ /* Some Asus desktop boards export an acpi-video backlight interface,
+ stop this from showing up */
+ chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
+ if (chassis_type && !strcmp(chassis_type, "3"))
+ acpi_video_dmi_promote_vendor();
+ if (asus->driver->quirks->wmi_backlight_power)
+ acpi_video_dmi_promote_vendor();
+ if (!acpi_video_backlight_support()) {
+ pr_info("Disabling ACPI video driver\n");
+ acpi_video_unregister();
+ err = asus_wmi_backlight_init(asus);
+ if (err && err != -ENODEV)
+ goto fail_backlight;
+ } else
+ pr_info("Backlight controlled by ACPI video driver\n");
+
+ status = wmi_install_notify_handler(asus->driver->event_guid,
+ asus_wmi_notify, asus);
+ if (ACPI_FAILURE(status)) {
+ pr_err("Unable to register notify handler - %d\n", status);
+ err = -ENODEV;
+ goto fail_wmi_handler;
+ }
+
+ err = asus_wmi_debugfs_init(asus);
+ if (err)
+ goto fail_debugfs;
+
+ asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
+ if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
+ asus->driver->wlan_ctrl_by_user = 1;
+
+ return 0;
+
+fail_debugfs:
+ wmi_remove_notify_handler(asus->driver->event_guid);
+fail_wmi_handler:
+ asus_wmi_backlight_exit(asus);
+fail_backlight:
+ asus_wmi_rfkill_exit(asus);
+fail_rfkill:
+ asus_wmi_led_exit(asus);
+fail_leds:
+fail_hwmon:
+ asus_wmi_input_exit(asus);
+fail_input:
+ asus_wmi_platform_exit(asus);
+fail_platform:
+ kfree(asus);
+ return err;
+}
+
+static int asus_wmi_remove(struct platform_device *device)
+{
+ struct asus_wmi *asus;
+
+ asus = platform_get_drvdata(device);
+ wmi_remove_notify_handler(asus->driver->event_guid);
+ asus_wmi_backlight_exit(asus);
+ asus_wmi_input_exit(asus);
+ asus_wmi_led_exit(asus);
+ asus_wmi_rfkill_exit(asus);
+ asus_wmi_debugfs_exit(asus);
+ asus_wmi_platform_exit(asus);
+
+ kfree(asus);
+ return 0;
+}
+
+/*
+ * Platform driver - hibernate/resume callbacks
+ */
+static int asus_hotk_thaw(struct device *device)
+{
+ struct asus_wmi *asus = dev_get_drvdata(device);
+
+ if (asus->wlan.rfkill) {
+ bool wlan;
+
+ /*
+ * Work around bios bug - acpi _PTS turns off the wireless led
+ * during suspend. Normally it restores it on resume, but
+ * we should kick it ourselves in case hibernation is aborted.
+ */
+ wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
+ asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
+ }
+
+ return 0;
+}
+
+static int asus_hotk_restore(struct device *device)
+{
+ struct asus_wmi *asus = dev_get_drvdata(device);
+ int bl;
+
+ /* Refresh both wlan rfkill state and pci hotplug */
+ if (asus->wlan.rfkill)
+ asus_rfkill_hotplug(asus);
+
+ if (asus->bluetooth.rfkill) {
+ bl = !asus_wmi_get_devstate_simple(asus,
+ ASUS_WMI_DEVID_BLUETOOTH);
+ rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
+ }
+ if (asus->wimax.rfkill) {
+ bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
+ rfkill_set_sw_state(asus->wimax.rfkill, bl);
+ }
+ if (asus->wwan3g.rfkill) {
+ bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
+ rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
+ }
+ if (asus->gps.rfkill) {
+ bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
+ rfkill_set_sw_state(asus->gps.rfkill, bl);
+ }
+ if (asus->uwb.rfkill) {
+ bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
+ rfkill_set_sw_state(asus->uwb.rfkill, bl);
+ }
+
+ return 0;
+}
+
+static const struct dev_pm_ops asus_pm_ops = {
+ .thaw = asus_hotk_thaw,
+ .restore = asus_hotk_restore,
+};
+
+static int asus_wmi_probe(struct platform_device *pdev)
+{
+ struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
+ struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
+ int ret;
+
+ if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
+ pr_warn("Management GUID not found\n");
+ return -ENODEV;
+ }
+
+ if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
+ pr_warn("Event GUID not found\n");
+ return -ENODEV;
+ }
+
+ if (wdrv->probe) {
+ ret = wdrv->probe(pdev);
+ if (ret)
+ return ret;
+ }
+
+ return asus_wmi_add(pdev);
+}
+
+static bool used;
+
+int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
+{
+ struct platform_driver *platform_driver;
+ struct platform_device *platform_device;
+
+ if (used)
+ return -EBUSY;
+
+ platform_driver = &driver->platform_driver;
+ platform_driver->remove = asus_wmi_remove;
+ platform_driver->driver.owner = driver->owner;
+ platform_driver->driver.name = driver->name;
+ platform_driver->driver.pm = &asus_pm_ops;
+
+ platform_device = platform_create_bundle(platform_driver,
+ asus_wmi_probe,
+ NULL, 0, NULL, 0);
+ if (IS_ERR(platform_device))
+ return PTR_ERR(platform_device);
+
+ used = true;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
+
+void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
+{
+ platform_device_unregister(driver->platform_device);
+ platform_driver_unregister(&driver->platform_driver);
+ used = false;
+}
+EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
+
+static int __init asus_wmi_init(void)
+{
+ if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
+ pr_info("Asus Management GUID not found\n");
+ return -ENODEV;
+ }
+
+ pr_info("ASUS WMI generic driver loaded\n");
+ return 0;
+}
+
+static void __exit asus_wmi_exit(void)
+{
+ pr_info("ASUS WMI generic driver unloaded\n");
+}
+
+module_init(asus_wmi_init);
+module_exit(asus_wmi_exit);
diff --git a/drivers/platform/x86/asus-wmi.h b/drivers/platform/x86/asus-wmi.h
new file mode 100644
index 000000000..4da4c8baf
--- /dev/null
+++ b/drivers/platform/x86/asus-wmi.h
@@ -0,0 +1,84 @@
+/*
+ * Asus PC WMI hotkey driver
+ *
+ * Copyright(C) 2010 Intel Corporation.
+ * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
+ *
+ * Portions based on wistron_btns.c:
+ * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
+ * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
+ * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _ASUS_WMI_H_
+#define _ASUS_WMI_H_
+
+#include <linux/platform_device.h>
+
+#define ASUS_WMI_KEY_IGNORE (-1)
+#define ASUS_WMI_BRN_DOWN 0x20
+#define ASUS_WMI_BRN_UP 0x2f
+
+struct module;
+struct key_entry;
+struct asus_wmi;
+
+struct quirk_entry {
+ bool hotplug_wireless;
+ bool scalar_panel_brightness;
+ bool store_backlight_power;
+ bool wmi_backlight_power;
+ int wapf;
+ /*
+ * For machines with AMD graphic chips, it will send out WMI event
+ * and ACPI interrupt at the same time while hitting the hotkey.
+ * To simplify the problem, we just have to ignore the WMI event,
+ * and let the ACPI interrupt to send out the key event.
+ */
+ int no_display_toggle;
+};
+
+struct asus_wmi_driver {
+ int brightness;
+ int panel_power;
+ int wlan_ctrl_by_user;
+
+ const char *name;
+ struct module *owner;
+
+ const char *event_guid;
+
+ const struct key_entry *keymap;
+ const char *input_name;
+ const char *input_phys;
+ struct quirk_entry *quirks;
+ /* Returns new code, value, and autorelease values in arguments.
+ * Return ASUS_WMI_KEY_IGNORE in code if event should be ignored. */
+ void (*key_filter) (struct asus_wmi_driver *driver, int *code,
+ unsigned int *value, bool *autorelease);
+
+ int (*probe) (struct platform_device *device);
+ void (*detect_quirks) (struct asus_wmi_driver *driver);
+
+ struct platform_driver platform_driver;
+ struct platform_device *platform_device;
+};
+
+int asus_wmi_register_driver(struct asus_wmi_driver *driver);
+void asus_wmi_unregister_driver(struct asus_wmi_driver *driver);
+
+#endif /* !_ASUS_WMI_H_ */
diff --git a/drivers/platform/x86/classmate-laptop.c b/drivers/platform/x86/classmate-laptop.c
new file mode 100644
index 000000000..55cf10bc7
--- /dev/null
+++ b/drivers/platform/x86/classmate-laptop.c
@@ -0,0 +1,1171 @@
+/*
+ * Copyright (C) 2009 Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/acpi.h>
+#include <linux/backlight.h>
+#include <linux/input.h>
+#include <linux/rfkill.h>
+
+MODULE_LICENSE("GPL");
+
+struct cmpc_accel {
+ int sensitivity;
+ int g_select;
+ int inputdev_state;
+};
+
+#define CMPC_ACCEL_DEV_STATE_CLOSED 0
+#define CMPC_ACCEL_DEV_STATE_OPEN 1
+
+#define CMPC_ACCEL_SENSITIVITY_DEFAULT 5
+#define CMPC_ACCEL_G_SELECT_DEFAULT 0
+
+#define CMPC_ACCEL_HID "ACCE0000"
+#define CMPC_ACCEL_HID_V4 "ACCE0001"
+#define CMPC_TABLET_HID "TBLT0000"
+#define CMPC_IPML_HID "IPML200"
+#define CMPC_KEYS_HID "FNBT0000"
+
+/*
+ * Generic input device code.
+ */
+
+typedef void (*input_device_init)(struct input_dev *dev);
+
+static int cmpc_add_acpi_notify_device(struct acpi_device *acpi, char *name,
+ input_device_init idev_init)
+{
+ struct input_dev *inputdev;
+ int error;
+
+ inputdev = input_allocate_device();
+ if (!inputdev)
+ return -ENOMEM;
+ inputdev->name = name;
+ inputdev->dev.parent = &acpi->dev;
+ idev_init(inputdev);
+ error = input_register_device(inputdev);
+ if (error) {
+ input_free_device(inputdev);
+ return error;
+ }
+ dev_set_drvdata(&acpi->dev, inputdev);
+ return 0;
+}
+
+static int cmpc_remove_acpi_notify_device(struct acpi_device *acpi)
+{
+ struct input_dev *inputdev = dev_get_drvdata(&acpi->dev);
+ input_unregister_device(inputdev);
+ return 0;
+}
+
+/*
+ * Accelerometer code for Classmate V4
+ */
+static acpi_status cmpc_start_accel_v4(acpi_handle handle)
+{
+ union acpi_object param[4];
+ struct acpi_object_list input;
+ acpi_status status;
+
+ param[0].type = ACPI_TYPE_INTEGER;
+ param[0].integer.value = 0x3;
+ param[1].type = ACPI_TYPE_INTEGER;
+ param[1].integer.value = 0;
+ param[2].type = ACPI_TYPE_INTEGER;
+ param[2].integer.value = 0;
+ param[3].type = ACPI_TYPE_INTEGER;
+ param[3].integer.value = 0;
+ input.count = 4;
+ input.pointer = param;
+ status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
+ return status;
+}
+
+static acpi_status cmpc_stop_accel_v4(acpi_handle handle)
+{
+ union acpi_object param[4];
+ struct acpi_object_list input;
+ acpi_status status;
+
+ param[0].type = ACPI_TYPE_INTEGER;
+ param[0].integer.value = 0x4;
+ param[1].type = ACPI_TYPE_INTEGER;
+ param[1].integer.value = 0;
+ param[2].type = ACPI_TYPE_INTEGER;
+ param[2].integer.value = 0;
+ param[3].type = ACPI_TYPE_INTEGER;
+ param[3].integer.value = 0;
+ input.count = 4;
+ input.pointer = param;
+ status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
+ return status;
+}
+
+static acpi_status cmpc_accel_set_sensitivity_v4(acpi_handle handle, int val)
+{
+ union acpi_object param[4];
+ struct acpi_object_list input;
+
+ param[0].type = ACPI_TYPE_INTEGER;
+ param[0].integer.value = 0x02;
+ param[1].type = ACPI_TYPE_INTEGER;
+ param[1].integer.value = val;
+ param[2].type = ACPI_TYPE_INTEGER;
+ param[2].integer.value = 0;
+ param[3].type = ACPI_TYPE_INTEGER;
+ param[3].integer.value = 0;
+ input.count = 4;
+ input.pointer = param;
+ return acpi_evaluate_object(handle, "ACMD", &input, NULL);
+}
+
+static acpi_status cmpc_accel_set_g_select_v4(acpi_handle handle, int val)
+{
+ union acpi_object param[4];
+ struct acpi_object_list input;
+
+ param[0].type = ACPI_TYPE_INTEGER;
+ param[0].integer.value = 0x05;
+ param[1].type = ACPI_TYPE_INTEGER;
+ param[1].integer.value = val;
+ param[2].type = ACPI_TYPE_INTEGER;
+ param[2].integer.value = 0;
+ param[3].type = ACPI_TYPE_INTEGER;
+ param[3].integer.value = 0;
+ input.count = 4;
+ input.pointer = param;
+ return acpi_evaluate_object(handle, "ACMD", &input, NULL);
+}
+
+static acpi_status cmpc_get_accel_v4(acpi_handle handle,
+ int16_t *x,
+ int16_t *y,
+ int16_t *z)
+{
+ union acpi_object param[4];
+ struct acpi_object_list input;
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ int16_t *locs;
+ acpi_status status;
+
+ param[0].type = ACPI_TYPE_INTEGER;
+ param[0].integer.value = 0x01;
+ param[1].type = ACPI_TYPE_INTEGER;
+ param[1].integer.value = 0;
+ param[2].type = ACPI_TYPE_INTEGER;
+ param[2].integer.value = 0;
+ param[3].type = ACPI_TYPE_INTEGER;
+ param[3].integer.value = 0;
+ input.count = 4;
+ input.pointer = param;
+ status = acpi_evaluate_object(handle, "ACMD", &input, &output);
+ if (ACPI_SUCCESS(status)) {
+ union acpi_object *obj;
+ obj = output.pointer;
+ locs = (int16_t *) obj->buffer.pointer;
+ *x = locs[0];
+ *y = locs[1];
+ *z = locs[2];
+ kfree(output.pointer);
+ }
+ return status;
+}
+
+static void cmpc_accel_handler_v4(struct acpi_device *dev, u32 event)
+{
+ if (event == 0x81) {
+ int16_t x, y, z;
+ acpi_status status;
+
+ status = cmpc_get_accel_v4(dev->handle, &x, &y, &z);
+ if (ACPI_SUCCESS(status)) {
+ struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
+
+ input_report_abs(inputdev, ABS_X, x);
+ input_report_abs(inputdev, ABS_Y, y);
+ input_report_abs(inputdev, ABS_Z, z);
+ input_sync(inputdev);
+ }
+ }
+}
+
+static ssize_t cmpc_accel_sensitivity_show_v4(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct acpi_device *acpi;
+ struct input_dev *inputdev;
+ struct cmpc_accel *accel;
+
+ acpi = to_acpi_device(dev);
+ inputdev = dev_get_drvdata(&acpi->dev);
+ accel = dev_get_drvdata(&inputdev->dev);
+
+ return sprintf(buf, "%d\n", accel->sensitivity);
+}
+
+static ssize_t cmpc_accel_sensitivity_store_v4(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct acpi_device *acpi;
+ struct input_dev *inputdev;
+ struct cmpc_accel *accel;
+ unsigned long sensitivity;
+ int r;
+
+ acpi = to_acpi_device(dev);
+ inputdev = dev_get_drvdata(&acpi->dev);
+ accel = dev_get_drvdata(&inputdev->dev);
+
+ r = kstrtoul(buf, 0, &sensitivity);
+ if (r)
+ return r;
+
+ /* sensitivity must be between 1 and 127 */
+ if (sensitivity < 1 || sensitivity > 127)
+ return -EINVAL;
+
+ accel->sensitivity = sensitivity;
+ cmpc_accel_set_sensitivity_v4(acpi->handle, sensitivity);
+
+ return strnlen(buf, count);
+}
+
+static struct device_attribute cmpc_accel_sensitivity_attr_v4 = {
+ .attr = { .name = "sensitivity", .mode = 0660 },
+ .show = cmpc_accel_sensitivity_show_v4,
+ .store = cmpc_accel_sensitivity_store_v4
+};
+
+static ssize_t cmpc_accel_g_select_show_v4(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct acpi_device *acpi;
+ struct input_dev *inputdev;
+ struct cmpc_accel *accel;
+
+ acpi = to_acpi_device(dev);
+ inputdev = dev_get_drvdata(&acpi->dev);
+ accel = dev_get_drvdata(&inputdev->dev);
+
+ return sprintf(buf, "%d\n", accel->g_select);
+}
+
+static ssize_t cmpc_accel_g_select_store_v4(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct acpi_device *acpi;
+ struct input_dev *inputdev;
+ struct cmpc_accel *accel;
+ unsigned long g_select;
+ int r;
+
+ acpi = to_acpi_device(dev);
+ inputdev = dev_get_drvdata(&acpi->dev);
+ accel = dev_get_drvdata(&inputdev->dev);
+
+ r = kstrtoul(buf, 0, &g_select);
+ if (r)
+ return r;
+
+ /* 0 means 1.5g, 1 means 6g, everything else is wrong */
+ if (g_select != 0 && g_select != 1)
+ return -EINVAL;
+
+ accel->g_select = g_select;
+ cmpc_accel_set_g_select_v4(acpi->handle, g_select);
+
+ return strnlen(buf, count);
+}
+
+static struct device_attribute cmpc_accel_g_select_attr_v4 = {
+ .attr = { .name = "g_select", .mode = 0660 },
+ .show = cmpc_accel_g_select_show_v4,
+ .store = cmpc_accel_g_select_store_v4
+};
+
+static int cmpc_accel_open_v4(struct input_dev *input)
+{
+ struct acpi_device *acpi;
+ struct cmpc_accel *accel;
+
+ acpi = to_acpi_device(input->dev.parent);
+ accel = dev_get_drvdata(&input->dev);
+
+ cmpc_accel_set_sensitivity_v4(acpi->handle, accel->sensitivity);
+ cmpc_accel_set_g_select_v4(acpi->handle, accel->g_select);
+
+ if (ACPI_SUCCESS(cmpc_start_accel_v4(acpi->handle))) {
+ accel->inputdev_state = CMPC_ACCEL_DEV_STATE_OPEN;
+ return 0;
+ }
+ return -EIO;
+}
+
+static void cmpc_accel_close_v4(struct input_dev *input)
+{
+ struct acpi_device *acpi;
+ struct cmpc_accel *accel;
+
+ acpi = to_acpi_device(input->dev.parent);
+ accel = dev_get_drvdata(&input->dev);
+
+ cmpc_stop_accel_v4(acpi->handle);
+ accel->inputdev_state = CMPC_ACCEL_DEV_STATE_CLOSED;
+}
+
+static void cmpc_accel_idev_init_v4(struct input_dev *inputdev)
+{
+ set_bit(EV_ABS, inputdev->evbit);
+ input_set_abs_params(inputdev, ABS_X, -255, 255, 16, 0);
+ input_set_abs_params(inputdev, ABS_Y, -255, 255, 16, 0);
+ input_set_abs_params(inputdev, ABS_Z, -255, 255, 16, 0);
+ inputdev->open = cmpc_accel_open_v4;
+ inputdev->close = cmpc_accel_close_v4;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int cmpc_accel_suspend_v4(struct device *dev)
+{
+ struct input_dev *inputdev;
+ struct cmpc_accel *accel;
+
+ inputdev = dev_get_drvdata(dev);
+ accel = dev_get_drvdata(&inputdev->dev);
+
+ if (accel->inputdev_state == CMPC_ACCEL_DEV_STATE_OPEN)
+ return cmpc_stop_accel_v4(to_acpi_device(dev)->handle);
+
+ return 0;
+}
+
+static int cmpc_accel_resume_v4(struct device *dev)
+{
+ struct input_dev *inputdev;
+ struct cmpc_accel *accel;
+
+ inputdev = dev_get_drvdata(dev);
+ accel = dev_get_drvdata(&inputdev->dev);
+
+ if (accel->inputdev_state == CMPC_ACCEL_DEV_STATE_OPEN) {
+ cmpc_accel_set_sensitivity_v4(to_acpi_device(dev)->handle,
+ accel->sensitivity);
+ cmpc_accel_set_g_select_v4(to_acpi_device(dev)->handle,
+ accel->g_select);
+
+ if (ACPI_FAILURE(cmpc_start_accel_v4(to_acpi_device(dev)->handle)))
+ return -EIO;
+ }
+
+ return 0;
+}
+#endif
+
+static int cmpc_accel_add_v4(struct acpi_device *acpi)
+{
+ int error;
+ struct input_dev *inputdev;
+ struct cmpc_accel *accel;
+
+ accel = kmalloc(sizeof(*accel), GFP_KERNEL);
+ if (!accel)
+ return -ENOMEM;
+
+ accel->inputdev_state = CMPC_ACCEL_DEV_STATE_CLOSED;
+
+ accel->sensitivity = CMPC_ACCEL_SENSITIVITY_DEFAULT;
+ cmpc_accel_set_sensitivity_v4(acpi->handle, accel->sensitivity);
+
+ error = device_create_file(&acpi->dev, &cmpc_accel_sensitivity_attr_v4);
+ if (error)
+ goto failed_sensitivity;
+
+ accel->g_select = CMPC_ACCEL_G_SELECT_DEFAULT;
+ cmpc_accel_set_g_select_v4(acpi->handle, accel->g_select);
+
+ error = device_create_file(&acpi->dev, &cmpc_accel_g_select_attr_v4);
+ if (error)
+ goto failed_g_select;
+
+ error = cmpc_add_acpi_notify_device(acpi, "cmpc_accel_v4",
+ cmpc_accel_idev_init_v4);
+ if (error)
+ goto failed_input;
+
+ inputdev = dev_get_drvdata(&acpi->dev);
+ dev_set_drvdata(&inputdev->dev, accel);
+
+ return 0;
+
+failed_input:
+ device_remove_file(&acpi->dev, &cmpc_accel_g_select_attr_v4);
+failed_g_select:
+ device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr_v4);
+failed_sensitivity:
+ kfree(accel);
+ return error;
+}
+
+static int cmpc_accel_remove_v4(struct acpi_device *acpi)
+{
+ struct input_dev *inputdev;
+ struct cmpc_accel *accel;
+
+ inputdev = dev_get_drvdata(&acpi->dev);
+ accel = dev_get_drvdata(&inputdev->dev);
+
+ device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr_v4);
+ device_remove_file(&acpi->dev, &cmpc_accel_g_select_attr_v4);
+ return cmpc_remove_acpi_notify_device(acpi);
+}
+
+static SIMPLE_DEV_PM_OPS(cmpc_accel_pm, cmpc_accel_suspend_v4,
+ cmpc_accel_resume_v4);
+
+static const struct acpi_device_id cmpc_accel_device_ids_v4[] = {
+ {CMPC_ACCEL_HID_V4, 0},
+ {"", 0}
+};
+
+static struct acpi_driver cmpc_accel_acpi_driver_v4 = {
+ .owner = THIS_MODULE,
+ .name = "cmpc_accel_v4",
+ .class = "cmpc_accel_v4",
+ .ids = cmpc_accel_device_ids_v4,
+ .ops = {
+ .add = cmpc_accel_add_v4,
+ .remove = cmpc_accel_remove_v4,
+ .notify = cmpc_accel_handler_v4,
+ },
+ .drv.pm = &cmpc_accel_pm,
+};
+
+
+/*
+ * Accelerometer code for Classmate versions prior to V4
+ */
+static acpi_status cmpc_start_accel(acpi_handle handle)
+{
+ union acpi_object param[2];
+ struct acpi_object_list input;
+ acpi_status status;
+
+ param[0].type = ACPI_TYPE_INTEGER;
+ param[0].integer.value = 0x3;
+ param[1].type = ACPI_TYPE_INTEGER;
+ input.count = 2;
+ input.pointer = param;
+ status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
+ return status;
+}
+
+static acpi_status cmpc_stop_accel(acpi_handle handle)
+{
+ union acpi_object param[2];
+ struct acpi_object_list input;
+ acpi_status status;
+
+ param[0].type = ACPI_TYPE_INTEGER;
+ param[0].integer.value = 0x4;
+ param[1].type = ACPI_TYPE_INTEGER;
+ input.count = 2;
+ input.pointer = param;
+ status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
+ return status;
+}
+
+static acpi_status cmpc_accel_set_sensitivity(acpi_handle handle, int val)
+{
+ union acpi_object param[2];
+ struct acpi_object_list input;
+
+ param[0].type = ACPI_TYPE_INTEGER;
+ param[0].integer.value = 0x02;
+ param[1].type = ACPI_TYPE_INTEGER;
+ param[1].integer.value = val;
+ input.count = 2;
+ input.pointer = param;
+ return acpi_evaluate_object(handle, "ACMD", &input, NULL);
+}
+
+static acpi_status cmpc_get_accel(acpi_handle handle,
+ unsigned char *x,
+ unsigned char *y,
+ unsigned char *z)
+{
+ union acpi_object param[2];
+ struct acpi_object_list input;
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ unsigned char *locs;
+ acpi_status status;
+
+ param[0].type = ACPI_TYPE_INTEGER;
+ param[0].integer.value = 0x01;
+ param[1].type = ACPI_TYPE_INTEGER;
+ input.count = 2;
+ input.pointer = param;
+ status = acpi_evaluate_object(handle, "ACMD", &input, &output);
+ if (ACPI_SUCCESS(status)) {
+ union acpi_object *obj;
+ obj = output.pointer;
+ locs = obj->buffer.pointer;
+ *x = locs[0];
+ *y = locs[1];
+ *z = locs[2];
+ kfree(output.pointer);
+ }
+ return status;
+}
+
+static void cmpc_accel_handler(struct acpi_device *dev, u32 event)
+{
+ if (event == 0x81) {
+ unsigned char x, y, z;
+ acpi_status status;
+
+ status = cmpc_get_accel(dev->handle, &x, &y, &z);
+ if (ACPI_SUCCESS(status)) {
+ struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
+
+ input_report_abs(inputdev, ABS_X, x);
+ input_report_abs(inputdev, ABS_Y, y);
+ input_report_abs(inputdev, ABS_Z, z);
+ input_sync(inputdev);
+ }
+ }
+}
+
+static ssize_t cmpc_accel_sensitivity_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct acpi_device *acpi;
+ struct input_dev *inputdev;
+ struct cmpc_accel *accel;
+
+ acpi = to_acpi_device(dev);
+ inputdev = dev_get_drvdata(&acpi->dev);
+ accel = dev_get_drvdata(&inputdev->dev);
+
+ return sprintf(buf, "%d\n", accel->sensitivity);
+}
+
+static ssize_t cmpc_accel_sensitivity_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct acpi_device *acpi;
+ struct input_dev *inputdev;
+ struct cmpc_accel *accel;
+ unsigned long sensitivity;
+ int r;
+
+ acpi = to_acpi_device(dev);
+ inputdev = dev_get_drvdata(&acpi->dev);
+ accel = dev_get_drvdata(&inputdev->dev);
+
+ r = kstrtoul(buf, 0, &sensitivity);
+ if (r)
+ return r;
+
+ accel->sensitivity = sensitivity;
+ cmpc_accel_set_sensitivity(acpi->handle, sensitivity);
+
+ return strnlen(buf, count);
+}
+
+static struct device_attribute cmpc_accel_sensitivity_attr = {
+ .attr = { .name = "sensitivity", .mode = 0660 },
+ .show = cmpc_accel_sensitivity_show,
+ .store = cmpc_accel_sensitivity_store
+};
+
+static int cmpc_accel_open(struct input_dev *input)
+{
+ struct acpi_device *acpi;
+
+ acpi = to_acpi_device(input->dev.parent);
+ if (ACPI_SUCCESS(cmpc_start_accel(acpi->handle)))
+ return 0;
+ return -EIO;
+}
+
+static void cmpc_accel_close(struct input_dev *input)
+{
+ struct acpi_device *acpi;
+
+ acpi = to_acpi_device(input->dev.parent);
+ cmpc_stop_accel(acpi->handle);
+}
+
+static void cmpc_accel_idev_init(struct input_dev *inputdev)
+{
+ set_bit(EV_ABS, inputdev->evbit);
+ input_set_abs_params(inputdev, ABS_X, 0, 255, 8, 0);
+ input_set_abs_params(inputdev, ABS_Y, 0, 255, 8, 0);
+ input_set_abs_params(inputdev, ABS_Z, 0, 255, 8, 0);
+ inputdev->open = cmpc_accel_open;
+ inputdev->close = cmpc_accel_close;
+}
+
+static int cmpc_accel_add(struct acpi_device *acpi)
+{
+ int error;
+ struct input_dev *inputdev;
+ struct cmpc_accel *accel;
+
+ accel = kmalloc(sizeof(*accel), GFP_KERNEL);
+ if (!accel)
+ return -ENOMEM;
+
+ accel->sensitivity = CMPC_ACCEL_SENSITIVITY_DEFAULT;
+ cmpc_accel_set_sensitivity(acpi->handle, accel->sensitivity);
+
+ error = device_create_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
+ if (error)
+ goto failed_file;
+
+ error = cmpc_add_acpi_notify_device(acpi, "cmpc_accel",
+ cmpc_accel_idev_init);
+ if (error)
+ goto failed_input;
+
+ inputdev = dev_get_drvdata(&acpi->dev);
+ dev_set_drvdata(&inputdev->dev, accel);
+
+ return 0;
+
+failed_input:
+ device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
+failed_file:
+ kfree(accel);
+ return error;
+}
+
+static int cmpc_accel_remove(struct acpi_device *acpi)
+{
+ struct input_dev *inputdev;
+ struct cmpc_accel *accel;
+
+ inputdev = dev_get_drvdata(&acpi->dev);
+ accel = dev_get_drvdata(&inputdev->dev);
+
+ device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
+ return cmpc_remove_acpi_notify_device(acpi);
+}
+
+static const struct acpi_device_id cmpc_accel_device_ids[] = {
+ {CMPC_ACCEL_HID, 0},
+ {"", 0}
+};
+
+static struct acpi_driver cmpc_accel_acpi_driver = {
+ .owner = THIS_MODULE,
+ .name = "cmpc_accel",
+ .class = "cmpc_accel",
+ .ids = cmpc_accel_device_ids,
+ .ops = {
+ .add = cmpc_accel_add,
+ .remove = cmpc_accel_remove,
+ .notify = cmpc_accel_handler,
+ }
+};
+
+
+/*
+ * Tablet mode code.
+ */
+static acpi_status cmpc_get_tablet(acpi_handle handle,
+ unsigned long long *value)
+{
+ union acpi_object param;
+ struct acpi_object_list input;
+ unsigned long long output;
+ acpi_status status;
+
+ param.type = ACPI_TYPE_INTEGER;
+ param.integer.value = 0x01;
+ input.count = 1;
+ input.pointer = &param;
+ status = acpi_evaluate_integer(handle, "TCMD", &input, &output);
+ if (ACPI_SUCCESS(status))
+ *value = output;
+ return status;
+}
+
+static void cmpc_tablet_handler(struct acpi_device *dev, u32 event)
+{
+ unsigned long long val = 0;
+ struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
+
+ if (event == 0x81) {
+ if (ACPI_SUCCESS(cmpc_get_tablet(dev->handle, &val))) {
+ input_report_switch(inputdev, SW_TABLET_MODE, !val);
+ input_sync(inputdev);
+ }
+ }
+}
+
+static void cmpc_tablet_idev_init(struct input_dev *inputdev)
+{
+ unsigned long long val = 0;
+ struct acpi_device *acpi;
+
+ set_bit(EV_SW, inputdev->evbit);
+ set_bit(SW_TABLET_MODE, inputdev->swbit);
+
+ acpi = to_acpi_device(inputdev->dev.parent);
+ if (ACPI_SUCCESS(cmpc_get_tablet(acpi->handle, &val))) {
+ input_report_switch(inputdev, SW_TABLET_MODE, !val);
+ input_sync(inputdev);
+ }
+}
+
+static int cmpc_tablet_add(struct acpi_device *acpi)
+{
+ return cmpc_add_acpi_notify_device(acpi, "cmpc_tablet",
+ cmpc_tablet_idev_init);
+}
+
+static int cmpc_tablet_remove(struct acpi_device *acpi)
+{
+ return cmpc_remove_acpi_notify_device(acpi);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int cmpc_tablet_resume(struct device *dev)
+{
+ struct input_dev *inputdev = dev_get_drvdata(dev);
+
+ unsigned long long val = 0;
+ if (ACPI_SUCCESS(cmpc_get_tablet(to_acpi_device(dev)->handle, &val))) {
+ input_report_switch(inputdev, SW_TABLET_MODE, !val);
+ input_sync(inputdev);
+ }
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(cmpc_tablet_pm, NULL, cmpc_tablet_resume);
+
+static const struct acpi_device_id cmpc_tablet_device_ids[] = {
+ {CMPC_TABLET_HID, 0},
+ {"", 0}
+};
+
+static struct acpi_driver cmpc_tablet_acpi_driver = {
+ .owner = THIS_MODULE,
+ .name = "cmpc_tablet",
+ .class = "cmpc_tablet",
+ .ids = cmpc_tablet_device_ids,
+ .ops = {
+ .add = cmpc_tablet_add,
+ .remove = cmpc_tablet_remove,
+ .notify = cmpc_tablet_handler,
+ },
+ .drv.pm = &cmpc_tablet_pm,
+};
+
+
+/*
+ * Backlight code.
+ */
+
+static acpi_status cmpc_get_brightness(acpi_handle handle,
+ unsigned long long *value)
+{
+ union acpi_object param;
+ struct acpi_object_list input;
+ unsigned long long output;
+ acpi_status status;
+
+ param.type = ACPI_TYPE_INTEGER;
+ param.integer.value = 0xC0;
+ input.count = 1;
+ input.pointer = &param;
+ status = acpi_evaluate_integer(handle, "GRDI", &input, &output);
+ if (ACPI_SUCCESS(status))
+ *value = output;
+ return status;
+}
+
+static acpi_status cmpc_set_brightness(acpi_handle handle,
+ unsigned long long value)
+{
+ union acpi_object param[2];
+ struct acpi_object_list input;
+ acpi_status status;
+ unsigned long long output;
+
+ param[0].type = ACPI_TYPE_INTEGER;
+ param[0].integer.value = 0xC0;
+ param[1].type = ACPI_TYPE_INTEGER;
+ param[1].integer.value = value;
+ input.count = 2;
+ input.pointer = param;
+ status = acpi_evaluate_integer(handle, "GWRI", &input, &output);
+ return status;
+}
+
+static int cmpc_bl_get_brightness(struct backlight_device *bd)
+{
+ acpi_status status;
+ acpi_handle handle;
+ unsigned long long brightness;
+
+ handle = bl_get_data(bd);
+ status = cmpc_get_brightness(handle, &brightness);
+ if (ACPI_SUCCESS(status))
+ return brightness;
+ else
+ return -1;
+}
+
+static int cmpc_bl_update_status(struct backlight_device *bd)
+{
+ acpi_status status;
+ acpi_handle handle;
+
+ handle = bl_get_data(bd);
+ status = cmpc_set_brightness(handle, bd->props.brightness);
+ if (ACPI_SUCCESS(status))
+ return 0;
+ else
+ return -1;
+}
+
+static const struct backlight_ops cmpc_bl_ops = {
+ .get_brightness = cmpc_bl_get_brightness,
+ .update_status = cmpc_bl_update_status
+};
+
+/*
+ * RFKILL code.
+ */
+
+static acpi_status cmpc_get_rfkill_wlan(acpi_handle handle,
+ unsigned long long *value)
+{
+ union acpi_object param;
+ struct acpi_object_list input;
+ unsigned long long output;
+ acpi_status status;
+
+ param.type = ACPI_TYPE_INTEGER;
+ param.integer.value = 0xC1;
+ input.count = 1;
+ input.pointer = &param;
+ status = acpi_evaluate_integer(handle, "GRDI", &input, &output);
+ if (ACPI_SUCCESS(status))
+ *value = output;
+ return status;
+}
+
+static acpi_status cmpc_set_rfkill_wlan(acpi_handle handle,
+ unsigned long long value)
+{
+ union acpi_object param[2];
+ struct acpi_object_list input;
+ acpi_status status;
+ unsigned long long output;
+
+ param[0].type = ACPI_TYPE_INTEGER;
+ param[0].integer.value = 0xC1;
+ param[1].type = ACPI_TYPE_INTEGER;
+ param[1].integer.value = value;
+ input.count = 2;
+ input.pointer = param;
+ status = acpi_evaluate_integer(handle, "GWRI", &input, &output);
+ return status;
+}
+
+static void cmpc_rfkill_query(struct rfkill *rfkill, void *data)
+{
+ acpi_status status;
+ acpi_handle handle;
+ unsigned long long state;
+ bool blocked;
+
+ handle = data;
+ status = cmpc_get_rfkill_wlan(handle, &state);
+ if (ACPI_SUCCESS(status)) {
+ blocked = state & 1 ? false : true;
+ rfkill_set_sw_state(rfkill, blocked);
+ }
+}
+
+static int cmpc_rfkill_block(void *data, bool blocked)
+{
+ acpi_status status;
+ acpi_handle handle;
+ unsigned long long state;
+ bool is_blocked;
+
+ handle = data;
+ status = cmpc_get_rfkill_wlan(handle, &state);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+ /* Check if we really need to call cmpc_set_rfkill_wlan */
+ is_blocked = state & 1 ? false : true;
+ if (is_blocked != blocked) {
+ state = blocked ? 0 : 1;
+ status = cmpc_set_rfkill_wlan(handle, state);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static const struct rfkill_ops cmpc_rfkill_ops = {
+ .query = cmpc_rfkill_query,
+ .set_block = cmpc_rfkill_block,
+};
+
+/*
+ * Common backlight and rfkill code.
+ */
+
+struct ipml200_dev {
+ struct backlight_device *bd;
+ struct rfkill *rf;
+};
+
+static int cmpc_ipml_add(struct acpi_device *acpi)
+{
+ int retval;
+ struct ipml200_dev *ipml;
+ struct backlight_properties props;
+
+ ipml = kmalloc(sizeof(*ipml), GFP_KERNEL);
+ if (ipml == NULL)
+ return -ENOMEM;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = 7;
+ ipml->bd = backlight_device_register("cmpc_bl", &acpi->dev,
+ acpi->handle, &cmpc_bl_ops,
+ &props);
+ if (IS_ERR(ipml->bd)) {
+ retval = PTR_ERR(ipml->bd);
+ goto out_bd;
+ }
+
+ ipml->rf = rfkill_alloc("cmpc_rfkill", &acpi->dev, RFKILL_TYPE_WLAN,
+ &cmpc_rfkill_ops, acpi->handle);
+ /*
+ * If RFKILL is disabled, rfkill_alloc will return ERR_PTR(-ENODEV).
+ * This is OK, however, since all other uses of the device will not
+ * derefence it.
+ */
+ if (ipml->rf) {
+ retval = rfkill_register(ipml->rf);
+ if (retval) {
+ rfkill_destroy(ipml->rf);
+ ipml->rf = NULL;
+ }
+ }
+
+ dev_set_drvdata(&acpi->dev, ipml);
+ return 0;
+
+out_bd:
+ kfree(ipml);
+ return retval;
+}
+
+static int cmpc_ipml_remove(struct acpi_device *acpi)
+{
+ struct ipml200_dev *ipml;
+
+ ipml = dev_get_drvdata(&acpi->dev);
+
+ backlight_device_unregister(ipml->bd);
+
+ if (ipml->rf) {
+ rfkill_unregister(ipml->rf);
+ rfkill_destroy(ipml->rf);
+ }
+
+ kfree(ipml);
+
+ return 0;
+}
+
+static const struct acpi_device_id cmpc_ipml_device_ids[] = {
+ {CMPC_IPML_HID, 0},
+ {"", 0}
+};
+
+static struct acpi_driver cmpc_ipml_acpi_driver = {
+ .owner = THIS_MODULE,
+ .name = "cmpc",
+ .class = "cmpc",
+ .ids = cmpc_ipml_device_ids,
+ .ops = {
+ .add = cmpc_ipml_add,
+ .remove = cmpc_ipml_remove
+ }
+};
+
+
+/*
+ * Extra keys code.
+ */
+static int cmpc_keys_codes[] = {
+ KEY_UNKNOWN,
+ KEY_WLAN,
+ KEY_SWITCHVIDEOMODE,
+ KEY_BRIGHTNESSDOWN,
+ KEY_BRIGHTNESSUP,
+ KEY_VENDOR,
+ KEY_UNKNOWN,
+ KEY_CAMERA,
+ KEY_BACK,
+ KEY_FORWARD,
+ KEY_MAX
+};
+
+static void cmpc_keys_handler(struct acpi_device *dev, u32 event)
+{
+ struct input_dev *inputdev;
+ int code = KEY_MAX;
+
+ if ((event & 0x0F) < ARRAY_SIZE(cmpc_keys_codes))
+ code = cmpc_keys_codes[event & 0x0F];
+ inputdev = dev_get_drvdata(&dev->dev);
+ input_report_key(inputdev, code, !(event & 0x10));
+ input_sync(inputdev);
+}
+
+static void cmpc_keys_idev_init(struct input_dev *inputdev)
+{
+ int i;
+
+ set_bit(EV_KEY, inputdev->evbit);
+ for (i = 0; cmpc_keys_codes[i] != KEY_MAX; i++)
+ set_bit(cmpc_keys_codes[i], inputdev->keybit);
+}
+
+static int cmpc_keys_add(struct acpi_device *acpi)
+{
+ return cmpc_add_acpi_notify_device(acpi, "cmpc_keys",
+ cmpc_keys_idev_init);
+}
+
+static int cmpc_keys_remove(struct acpi_device *acpi)
+{
+ return cmpc_remove_acpi_notify_device(acpi);
+}
+
+static const struct acpi_device_id cmpc_keys_device_ids[] = {
+ {CMPC_KEYS_HID, 0},
+ {"", 0}
+};
+
+static struct acpi_driver cmpc_keys_acpi_driver = {
+ .owner = THIS_MODULE,
+ .name = "cmpc_keys",
+ .class = "cmpc_keys",
+ .ids = cmpc_keys_device_ids,
+ .ops = {
+ .add = cmpc_keys_add,
+ .remove = cmpc_keys_remove,
+ .notify = cmpc_keys_handler,
+ }
+};
+
+
+/*
+ * General init/exit code.
+ */
+
+static int cmpc_init(void)
+{
+ int r;
+
+ r = acpi_bus_register_driver(&cmpc_keys_acpi_driver);
+ if (r)
+ goto failed_keys;
+
+ r = acpi_bus_register_driver(&cmpc_ipml_acpi_driver);
+ if (r)
+ goto failed_bl;
+
+ r = acpi_bus_register_driver(&cmpc_tablet_acpi_driver);
+ if (r)
+ goto failed_tablet;
+
+ r = acpi_bus_register_driver(&cmpc_accel_acpi_driver);
+ if (r)
+ goto failed_accel;
+
+ r = acpi_bus_register_driver(&cmpc_accel_acpi_driver_v4);
+ if (r)
+ goto failed_accel_v4;
+
+ return r;
+
+failed_accel_v4:
+ acpi_bus_unregister_driver(&cmpc_accel_acpi_driver);
+
+failed_accel:
+ acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
+
+failed_tablet:
+ acpi_bus_unregister_driver(&cmpc_ipml_acpi_driver);
+
+failed_bl:
+ acpi_bus_unregister_driver(&cmpc_keys_acpi_driver);
+
+failed_keys:
+ return r;
+}
+
+static void cmpc_exit(void)
+{
+ acpi_bus_unregister_driver(&cmpc_accel_acpi_driver_v4);
+ acpi_bus_unregister_driver(&cmpc_accel_acpi_driver);
+ acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
+ acpi_bus_unregister_driver(&cmpc_ipml_acpi_driver);
+ acpi_bus_unregister_driver(&cmpc_keys_acpi_driver);
+}
+
+module_init(cmpc_init);
+module_exit(cmpc_exit);
+
+static const struct acpi_device_id cmpc_device_ids[] = {
+ {CMPC_ACCEL_HID, 0},
+ {CMPC_ACCEL_HID_V4, 0},
+ {CMPC_TABLET_HID, 0},
+ {CMPC_IPML_HID, 0},
+ {CMPC_KEYS_HID, 0},
+ {"", 0}
+};
+
+MODULE_DEVICE_TABLE(acpi, cmpc_device_ids);
diff --git a/drivers/platform/x86/compal-laptop.c b/drivers/platform/x86/compal-laptop.c
new file mode 100644
index 000000000..b4e94471f
--- /dev/null
+++ b/drivers/platform/x86/compal-laptop.c
@@ -0,0 +1,1098 @@
+/*-*-linux-c-*-*/
+
+/*
+ Copyright (C) 2008 Cezary Jackiewicz <cezary.jackiewicz (at) gmail.com>
+
+ based on MSI driver
+
+ Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
+ */
+
+/*
+ * compal-laptop.c - Compal laptop support.
+ *
+ * This driver exports a few files in /sys/devices/platform/compal-laptop/:
+ * wake_up_XXX Whether or not we listen to such wake up events (rw)
+ *
+ * In addition to these platform device attributes the driver
+ * registers itself in the Linux backlight control, power_supply, rfkill
+ * and hwmon subsystem and is available to userspace under:
+ *
+ * /sys/class/backlight/compal-laptop/
+ * /sys/class/power_supply/compal-laptop/
+ * /sys/class/rfkill/rfkillX/
+ * /sys/class/hwmon/hwmonX/
+ *
+ * Notes on the power_supply battery interface:
+ * - the "minimum" design voltage is *the* design voltage
+ * - the ambient temperature is the average battery temperature
+ * and the value is an educated guess (see commented code below)
+ *
+ *
+ * This driver might work on other laptops produced by Compal. If you
+ * want to try it you can pass force=1 as argument to the module which
+ * will force it to load even when the DMI data doesn't identify the
+ * laptop as compatible.
+ *
+ * Lots of data available at:
+ * http://service1.marasst.com/Compal/JHL90_91/Service%20Manual/
+ * JHL90%20service%20manual-Final-0725.pdf
+ *
+ *
+ *
+ * Support for the Compal JHL90 added by Roald Frederickx
+ * (roald.frederickx@gmail.com):
+ * Driver got large revision. Added functionalities: backlight
+ * power, wake_on_XXX, a hwmon and power_supply interface.
+ *
+ * In case this gets merged into the kernel source: I want to dedicate this
+ * to Kasper Meerts, the awesome guy who showed me Linux and C!
+ */
+
+/* NOTE: currently the wake_on_XXX, hwmon and power_supply interfaces are
+ * only enabled on a JHL90 board until it is verified that they work on the
+ * other boards too. See the extra_features variable. */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <linux/backlight.h>
+#include <linux/platform_device.h>
+#include <linux/rfkill.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/power_supply.h>
+#include <linux/fb.h>
+
+
+/* ======= */
+/* Defines */
+/* ======= */
+#define DRIVER_NAME "compal-laptop"
+#define DRIVER_VERSION "0.2.7"
+
+#define BACKLIGHT_LEVEL_ADDR 0xB9
+#define BACKLIGHT_LEVEL_MAX 7
+#define BACKLIGHT_STATE_ADDR 0x59
+#define BACKLIGHT_STATE_ON_DATA 0xE1
+#define BACKLIGHT_STATE_OFF_DATA 0xE2
+
+#define WAKE_UP_ADDR 0xA4
+#define WAKE_UP_PME (1 << 0)
+#define WAKE_UP_MODEM (1 << 1)
+#define WAKE_UP_LAN (1 << 2)
+#define WAKE_UP_WLAN (1 << 4)
+#define WAKE_UP_KEY (1 << 6)
+#define WAKE_UP_MOUSE (1 << 7)
+
+#define WIRELESS_ADDR 0xBB
+#define WIRELESS_WLAN (1 << 0)
+#define WIRELESS_BT (1 << 1)
+#define WIRELESS_WLAN_EXISTS (1 << 2)
+#define WIRELESS_BT_EXISTS (1 << 3)
+#define WIRELESS_KILLSWITCH (1 << 4)
+
+#define PWM_ADDRESS 0x46
+#define PWM_DISABLE_ADDR 0x59
+#define PWM_DISABLE_DATA 0xA5
+#define PWM_ENABLE_ADDR 0x59
+#define PWM_ENABLE_DATA 0xA8
+
+#define FAN_ADDRESS 0x46
+#define FAN_DATA 0x81
+#define FAN_FULL_ON_CMD 0x59 /* Doesn't seem to work. Just */
+#define FAN_FULL_ON_ENABLE 0x76 /* force the pwm signal to its */
+#define FAN_FULL_ON_DISABLE 0x77 /* maximum value instead */
+
+#define TEMP_CPU 0xB0
+#define TEMP_CPU_LOCAL 0xB1
+#define TEMP_CPU_DTS 0xB5
+#define TEMP_NORTHBRIDGE 0xB6
+#define TEMP_VGA 0xB4
+#define TEMP_SKIN 0xB2
+
+#define BAT_MANUFACTURER_NAME_ADDR 0x10
+#define BAT_MANUFACTURER_NAME_LEN 9
+#define BAT_MODEL_NAME_ADDR 0x19
+#define BAT_MODEL_NAME_LEN 6
+#define BAT_SERIAL_NUMBER_ADDR 0xC4
+#define BAT_SERIAL_NUMBER_LEN 5
+#define BAT_CHARGE_NOW 0xC2
+#define BAT_CHARGE_DESIGN 0xCA
+#define BAT_VOLTAGE_NOW 0xC6
+#define BAT_VOLTAGE_DESIGN 0xC8
+#define BAT_CURRENT_NOW 0xD0
+#define BAT_CURRENT_AVG 0xD2
+#define BAT_POWER 0xD4
+#define BAT_CAPACITY 0xCE
+#define BAT_TEMP 0xD6
+#define BAT_TEMP_AVG 0xD7
+#define BAT_STATUS0 0xC1
+#define BAT_STATUS1 0xF0
+#define BAT_STATUS2 0xF1
+#define BAT_STOP_CHARGE1 0xF2
+#define BAT_STOP_CHARGE2 0xF3
+
+#define BAT_S0_DISCHARGE (1 << 0)
+#define BAT_S0_DISCHRG_CRITICAL (1 << 2)
+#define BAT_S0_LOW (1 << 3)
+#define BAT_S0_CHARGING (1 << 1)
+#define BAT_S0_AC (1 << 7)
+#define BAT_S1_EXISTS (1 << 0)
+#define BAT_S1_FULL (1 << 1)
+#define BAT_S1_EMPTY (1 << 2)
+#define BAT_S1_LiION_OR_NiMH (1 << 7)
+#define BAT_S2_LOW_LOW (1 << 0)
+#define BAT_STOP_CHRG1_BAD_CELL (1 << 1)
+#define BAT_STOP_CHRG1_COMM_FAIL (1 << 2)
+#define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6)
+#define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7)
+
+
+/* ======= */
+/* Structs */
+/* ======= */
+struct compal_data{
+ /* Fan control */
+ int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */
+ unsigned char curr_pwm;
+
+ /* Power supply */
+ struct power_supply *psy;
+ struct power_supply_info psy_info;
+ char bat_model_name[BAT_MODEL_NAME_LEN + 1];
+ char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
+ char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
+};
+
+
+/* =============== */
+/* General globals */
+/* =============== */
+static bool force;
+module_param(force, bool, 0);
+MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
+
+/* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
+ * only gets enabled on a JHL90 board. Might work with the others too */
+static bool extra_features;
+
+/* Nasty stuff. For some reason the fan control is very un-linear. I've
+ * come up with these values by looping through the possible inputs and
+ * watching the output of address 0x4F (do an ec_transaction writing 0x33
+ * into 0x4F and read a few bytes from the output, like so:
+ * u8 writeData = 0x33;
+ * ec_transaction(0x4F, &writeData, 1, buffer, 32);
+ * That address is labeled "fan1 table information" in the service manual.
+ * It should be clear which value in 'buffer' changes). This seems to be
+ * related to fan speed. It isn't a proper 'realtime' fan speed value
+ * though, because physically stopping or speeding up the fan doesn't
+ * change it. It might be the average voltage or current of the pwm output.
+ * Nevertheless, it is more fine-grained than the actual RPM reading */
+static const unsigned char pwm_lookup_table[256] = {
+ 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
+ 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
+ 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
+ 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
+ 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
+ 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
+ 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
+ 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
+ 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
+ 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
+ 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
+ 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
+ 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
+ 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
+ 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
+ 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
+ 187, 187, 193, 50
+};
+
+
+
+
+/* ========================= */
+/* Hardware access functions */
+/* ========================= */
+/* General access */
+static u8 ec_read_u8(u8 addr)
+{
+ u8 value;
+ ec_read(addr, &value);
+ return value;
+}
+
+static s8 ec_read_s8(u8 addr)
+{
+ return (s8)ec_read_u8(addr);
+}
+
+static u16 ec_read_u16(u8 addr)
+{
+ int hi, lo;
+ lo = ec_read_u8(addr);
+ hi = ec_read_u8(addr + 1);
+ return (hi << 8) + lo;
+}
+
+static s16 ec_read_s16(u8 addr)
+{
+ return (s16) ec_read_u16(addr);
+}
+
+static void ec_read_sequence(u8 addr, u8 *buf, int len)
+{
+ int i;
+ for (i = 0; i < len; i++)
+ ec_read(addr + i, buf + i);
+}
+
+
+/* Backlight access */
+static int set_backlight_level(int level)
+{
+ if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
+ return -EINVAL;
+
+ ec_write(BACKLIGHT_LEVEL_ADDR, level);
+
+ return 0;
+}
+
+static int get_backlight_level(void)
+{
+ return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
+}
+
+static void set_backlight_state(bool on)
+{
+ u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
+ ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0);
+}
+
+
+/* Fan control access */
+static void pwm_enable_control(void)
+{
+ unsigned char writeData = PWM_ENABLE_DATA;
+ ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0);
+}
+
+static void pwm_disable_control(void)
+{
+ unsigned char writeData = PWM_DISABLE_DATA;
+ ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0);
+}
+
+static void set_pwm(int pwm)
+{
+ ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0);
+}
+
+static int get_fan_rpm(void)
+{
+ u8 value, data = FAN_DATA;
+ ec_transaction(FAN_ADDRESS, &data, 1, &value, 1);
+ return 100 * (int)value;
+}
+
+
+
+
+/* =================== */
+/* Interface functions */
+/* =================== */
+
+/* Backlight interface */
+static int bl_get_brightness(struct backlight_device *b)
+{
+ return get_backlight_level();
+}
+
+static int bl_update_status(struct backlight_device *b)
+{
+ int ret = set_backlight_level(b->props.brightness);
+ if (ret)
+ return ret;
+
+ set_backlight_state((b->props.power == FB_BLANK_UNBLANK)
+ && !(b->props.state & BL_CORE_SUSPENDED)
+ && !(b->props.state & BL_CORE_FBBLANK));
+ return 0;
+}
+
+static const struct backlight_ops compalbl_ops = {
+ .get_brightness = bl_get_brightness,
+ .update_status = bl_update_status,
+};
+
+
+/* Wireless interface */
+static int compal_rfkill_set(void *data, bool blocked)
+{
+ unsigned long radio = (unsigned long) data;
+ u8 result = ec_read_u8(WIRELESS_ADDR);
+ u8 value;
+
+ if (!blocked)
+ value = (u8) (result | radio);
+ else
+ value = (u8) (result & ~radio);
+ ec_write(WIRELESS_ADDR, value);
+
+ return 0;
+}
+
+static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
+{
+ u8 result = ec_read_u8(WIRELESS_ADDR);
+ bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
+ rfkill_set_hw_state(rfkill, hw_blocked);
+}
+
+static const struct rfkill_ops compal_rfkill_ops = {
+ .poll = compal_rfkill_poll,
+ .set_block = compal_rfkill_set,
+};
+
+
+/* Wake_up interface */
+#define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
+static ssize_t NAME##_show(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \
+} \
+static ssize_t NAME##_store(struct device *dev, \
+ struct device_attribute *attr, const char *buf, size_t count) \
+{ \
+ int state; \
+ u8 old_val = ec_read_u8(ADDR); \
+ if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
+ return -EINVAL; \
+ ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
+ return count; \
+}
+
+SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
+SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
+SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
+SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
+SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
+SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
+
+/* Fan control interface */
+static ssize_t pwm_enable_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct compal_data *data = dev_get_drvdata(dev);
+ return sprintf(buf, "%d\n", data->pwm_enable);
+}
+
+static ssize_t pwm_enable_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct compal_data *data = dev_get_drvdata(dev);
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+ if (val < 0)
+ return -EINVAL;
+
+ data->pwm_enable = val;
+
+ switch (val) {
+ case 0: /* Full speed */
+ pwm_enable_control();
+ set_pwm(255);
+ break;
+ case 1: /* As set by pwm1 */
+ pwm_enable_control();
+ set_pwm(data->curr_pwm);
+ break;
+ default: /* Control by motherboard */
+ pwm_disable_control();
+ break;
+ }
+
+ return count;
+}
+
+static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct compal_data *data = dev_get_drvdata(dev);
+ return sprintf(buf, "%hhu\n", data->curr_pwm);
+}
+
+static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct compal_data *data = dev_get_drvdata(dev);
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+ if (val < 0 || val > 255)
+ return -EINVAL;
+
+ data->curr_pwm = val;
+
+ if (data->pwm_enable != 1)
+ return count;
+ set_pwm(val);
+
+ return count;
+}
+
+static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%d\n", get_fan_rpm());
+}
+
+
+/* Temperature interface */
+#define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
+static ssize_t temp_##POSTFIX(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
+} \
+static ssize_t label_##POSTFIX(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ return sprintf(buf, "%s\n", LABEL); \
+}
+
+/* Labels as in service guide */
+TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
+TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
+TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
+TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
+TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
+TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
+
+
+/* Power supply interface */
+static int bat_status(void)
+{
+ u8 status0 = ec_read_u8(BAT_STATUS0);
+ u8 status1 = ec_read_u8(BAT_STATUS1);
+
+ if (status0 & BAT_S0_CHARGING)
+ return POWER_SUPPLY_STATUS_CHARGING;
+ if (status0 & BAT_S0_DISCHARGE)
+ return POWER_SUPPLY_STATUS_DISCHARGING;
+ if (status1 & BAT_S1_FULL)
+ return POWER_SUPPLY_STATUS_FULL;
+ return POWER_SUPPLY_STATUS_NOT_CHARGING;
+}
+
+static int bat_health(void)
+{
+ u8 status = ec_read_u8(BAT_STOP_CHARGE1);
+
+ if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
+ return POWER_SUPPLY_HEALTH_OVERHEAT;
+ if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
+ return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ if (status & BAT_STOP_CHRG1_BAD_CELL)
+ return POWER_SUPPLY_HEALTH_DEAD;
+ if (status & BAT_STOP_CHRG1_COMM_FAIL)
+ return POWER_SUPPLY_HEALTH_UNKNOWN;
+ return POWER_SUPPLY_HEALTH_GOOD;
+}
+
+static int bat_is_present(void)
+{
+ u8 status = ec_read_u8(BAT_STATUS2);
+ return ((status & BAT_S1_EXISTS) != 0);
+}
+
+static int bat_technology(void)
+{
+ u8 status = ec_read_u8(BAT_STATUS1);
+
+ if (status & BAT_S1_LiION_OR_NiMH)
+ return POWER_SUPPLY_TECHNOLOGY_LION;
+ return POWER_SUPPLY_TECHNOLOGY_NiMH;
+}
+
+static int bat_capacity_level(void)
+{
+ u8 status0 = ec_read_u8(BAT_STATUS0);
+ u8 status1 = ec_read_u8(BAT_STATUS1);
+ u8 status2 = ec_read_u8(BAT_STATUS2);
+
+ if (status0 & BAT_S0_DISCHRG_CRITICAL
+ || status1 & BAT_S1_EMPTY
+ || status2 & BAT_S2_LOW_LOW)
+ return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
+ if (status0 & BAT_S0_LOW)
+ return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+ if (status1 & BAT_S1_FULL)
+ return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
+ return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+}
+
+static int bat_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct compal_data *data = power_supply_get_drvdata(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = bat_status();
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ val->intval = bat_health();
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = bat_is_present();
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = bat_technology();
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
+ val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_POWER_NOW:
+ val->intval = ec_read_u8(BAT_POWER) * 1000000;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = ec_read_u8(BAT_CAPACITY);
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+ val->intval = bat_capacity_level();
+ break;
+ /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
+ * the number of degrees, whereas BAT_TEMP is somewhat more
+ * complicated. It looks like this is a negative nember with a
+ * 100/256 divider and an offset of 222. Both were determined
+ * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
+ break;
+ case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
+ val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
+ break;
+ /* Neither the model name nor manufacturer name work for me. */
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = data->bat_model_name;
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = data->bat_manufacturer_name;
+ break;
+ case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+ val->strval = data->bat_serial_number;
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+
+
+
+
+/* ============== */
+/* Driver Globals */
+/* ============== */
+static DEVICE_ATTR(wake_up_pme,
+ 0644, wake_up_pme_show, wake_up_pme_store);
+static DEVICE_ATTR(wake_up_modem,
+ 0644, wake_up_modem_show, wake_up_modem_store);
+static DEVICE_ATTR(wake_up_lan,
+ 0644, wake_up_lan_show, wake_up_lan_store);
+static DEVICE_ATTR(wake_up_wlan,
+ 0644, wake_up_wlan_show, wake_up_wlan_store);
+static DEVICE_ATTR(wake_up_key,
+ 0644, wake_up_key_show, wake_up_key_store);
+static DEVICE_ATTR(wake_up_mouse,
+ 0644, wake_up_mouse_show, wake_up_mouse_store);
+
+static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL);
+static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL);
+static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL);
+static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL);
+static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL);
+static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL);
+static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL);
+static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL);
+static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL);
+static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL);
+static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL);
+static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL);
+static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL);
+static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store);
+static DEVICE_ATTR(pwm1_enable,
+ S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store);
+
+static struct attribute *compal_platform_attrs[] = {
+ &dev_attr_wake_up_pme.attr,
+ &dev_attr_wake_up_modem.attr,
+ &dev_attr_wake_up_lan.attr,
+ &dev_attr_wake_up_wlan.attr,
+ &dev_attr_wake_up_key.attr,
+ &dev_attr_wake_up_mouse.attr,
+ NULL
+};
+static struct attribute_group compal_platform_attr_group = {
+ .attrs = compal_platform_attrs
+};
+
+static struct attribute *compal_hwmon_attrs[] = {
+ &dev_attr_pwm1_enable.attr,
+ &dev_attr_pwm1.attr,
+ &dev_attr_fan1_input.attr,
+ &dev_attr_temp1_input.attr,
+ &dev_attr_temp2_input.attr,
+ &dev_attr_temp3_input.attr,
+ &dev_attr_temp4_input.attr,
+ &dev_attr_temp5_input.attr,
+ &dev_attr_temp6_input.attr,
+ &dev_attr_temp1_label.attr,
+ &dev_attr_temp2_label.attr,
+ &dev_attr_temp3_label.attr,
+ &dev_attr_temp4_label.attr,
+ &dev_attr_temp5_label.attr,
+ &dev_attr_temp6_label.attr,
+ NULL
+};
+ATTRIBUTE_GROUPS(compal_hwmon);
+
+static int compal_probe(struct platform_device *);
+static int compal_remove(struct platform_device *);
+static struct platform_driver compal_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ },
+ .probe = compal_probe,
+ .remove = compal_remove,
+};
+
+static enum power_supply_property compal_bat_properties[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_POWER_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TEMP_AMBIENT,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
+};
+
+static struct backlight_device *compalbl_device;
+
+static struct platform_device *compal_device;
+
+static struct rfkill *wifi_rfkill;
+static struct rfkill *bt_rfkill;
+
+
+
+
+
+/* =================================== */
+/* Initialization & clean-up functions */
+/* =================================== */
+
+static int dmi_check_cb(const struct dmi_system_id *id)
+{
+ pr_info("Identified laptop model '%s'\n", id->ident);
+ extra_features = false;
+ return 1;
+}
+
+static int dmi_check_cb_extra(const struct dmi_system_id *id)
+{
+ pr_info("Identified laptop model '%s', enabling extra features\n",
+ id->ident);
+ extra_features = true;
+ return 1;
+}
+
+static struct dmi_system_id __initdata compal_dmi_table[] = {
+ {
+ .ident = "FL90/IFL90",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
+ DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
+ },
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "FL90/IFL90",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
+ DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
+ },
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "FL91/IFL91",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
+ DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
+ },
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "FL92/JFL92",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
+ DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
+ },
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "FT00/IFT00",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
+ DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
+ },
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "Dell Mini 9",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
+ },
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "Dell Mini 10",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
+ },
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "Dell Mini 10v",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
+ },
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "Dell Mini 1012",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
+ },
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "Dell Inspiron 11z",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
+ },
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "Dell Mini 12",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
+ },
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "JHL90",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
+ DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
+ },
+ .callback = dmi_check_cb_extra
+ },
+ {
+ .ident = "KHLB2",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_NAME, "KHLB2"),
+ DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
+ },
+ .callback = dmi_check_cb_extra
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
+
+static const struct power_supply_desc psy_bat_desc = {
+ .name = DRIVER_NAME,
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = compal_bat_properties,
+ .num_properties = ARRAY_SIZE(compal_bat_properties),
+ .get_property = bat_get_property,
+};
+
+static void initialize_power_supply_data(struct compal_data *data)
+{
+
+ ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
+ data->bat_manufacturer_name,
+ BAT_MANUFACTURER_NAME_LEN);
+ data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
+
+ ec_read_sequence(BAT_MODEL_NAME_ADDR,
+ data->bat_model_name,
+ BAT_MODEL_NAME_LEN);
+ data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
+
+ scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
+ ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
+}
+
+static void initialize_fan_control_data(struct compal_data *data)
+{
+ data->pwm_enable = 2; /* Keep motherboard in control for now */
+ data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
+ if we take over... */
+}
+
+static int setup_rfkill(void)
+{
+ int ret;
+
+ wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
+ RFKILL_TYPE_WLAN, &compal_rfkill_ops,
+ (void *) WIRELESS_WLAN);
+ if (!wifi_rfkill)
+ return -ENOMEM;
+
+ ret = rfkill_register(wifi_rfkill);
+ if (ret)
+ goto err_wifi;
+
+ bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
+ RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
+ (void *) WIRELESS_BT);
+ if (!bt_rfkill) {
+ ret = -ENOMEM;
+ goto err_allocate_bt;
+ }
+ ret = rfkill_register(bt_rfkill);
+ if (ret)
+ goto err_register_bt;
+
+ return 0;
+
+err_register_bt:
+ rfkill_destroy(bt_rfkill);
+
+err_allocate_bt:
+ rfkill_unregister(wifi_rfkill);
+
+err_wifi:
+ rfkill_destroy(wifi_rfkill);
+
+ return ret;
+}
+
+static int __init compal_init(void)
+{
+ int ret;
+
+ if (acpi_disabled) {
+ pr_err("ACPI needs to be enabled for this driver to work!\n");
+ return -ENODEV;
+ }
+
+ if (!force && !dmi_check_system(compal_dmi_table)) {
+ pr_err("Motherboard not recognized (You could try the module's force-parameter)\n");
+ return -ENODEV;
+ }
+
+ if (!acpi_video_backlight_support()) {
+ struct backlight_properties props;
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = BACKLIGHT_LEVEL_MAX;
+ compalbl_device = backlight_device_register(DRIVER_NAME,
+ NULL, NULL,
+ &compalbl_ops,
+ &props);
+ if (IS_ERR(compalbl_device))
+ return PTR_ERR(compalbl_device);
+ }
+
+ ret = platform_driver_register(&compal_driver);
+ if (ret)
+ goto err_backlight;
+
+ compal_device = platform_device_alloc(DRIVER_NAME, -1);
+ if (!compal_device) {
+ ret = -ENOMEM;
+ goto err_platform_driver;
+ }
+
+ ret = platform_device_add(compal_device); /* This calls compal_probe */
+ if (ret)
+ goto err_platform_device;
+
+ ret = setup_rfkill();
+ if (ret)
+ goto err_rfkill;
+
+ pr_info("Driver " DRIVER_VERSION " successfully loaded\n");
+ return 0;
+
+err_rfkill:
+ platform_device_del(compal_device);
+
+err_platform_device:
+ platform_device_put(compal_device);
+
+err_platform_driver:
+ platform_driver_unregister(&compal_driver);
+
+err_backlight:
+ backlight_device_unregister(compalbl_device);
+
+ return ret;
+}
+
+static int compal_probe(struct platform_device *pdev)
+{
+ int err;
+ struct compal_data *data;
+ struct device *hwmon_dev;
+ struct power_supply_config psy_cfg = {};
+
+ if (!extra_features)
+ return 0;
+
+ /* Fan control */
+ data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ initialize_fan_control_data(data);
+
+ err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group);
+ if (err)
+ return err;
+
+ hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev,
+ "compal", data,
+ compal_hwmon_groups);
+ if (IS_ERR(hwmon_dev)) {
+ err = PTR_ERR(hwmon_dev);
+ goto remove;
+ }
+
+ /* Power supply */
+ initialize_power_supply_data(data);
+ psy_cfg.drv_data = data;
+ data->psy = power_supply_register(&compal_device->dev, &psy_bat_desc,
+ &psy_cfg);
+ if (IS_ERR(data->psy)) {
+ err = PTR_ERR(data->psy);
+ goto remove;
+ }
+
+ platform_set_drvdata(pdev, data);
+
+ return 0;
+
+remove:
+ sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
+ return err;
+}
+
+static void __exit compal_cleanup(void)
+{
+ platform_device_unregister(compal_device);
+ platform_driver_unregister(&compal_driver);
+ backlight_device_unregister(compalbl_device);
+ rfkill_unregister(wifi_rfkill);
+ rfkill_unregister(bt_rfkill);
+ rfkill_destroy(wifi_rfkill);
+ rfkill_destroy(bt_rfkill);
+
+ pr_info("Driver unloaded\n");
+}
+
+static int compal_remove(struct platform_device *pdev)
+{
+ struct compal_data *data;
+
+ if (!extra_features)
+ return 0;
+
+ pr_info("Unloading: resetting fan control to motherboard\n");
+ pwm_disable_control();
+
+ data = platform_get_drvdata(pdev);
+ power_supply_unregister(data->psy);
+
+ sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
+
+ return 0;
+}
+
+
+module_init(compal_init);
+module_exit(compal_cleanup);
+
+MODULE_AUTHOR("Cezary Jackiewicz");
+MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
+MODULE_DESCRIPTION("Compal Laptop Support");
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
new file mode 100644
index 000000000..2c1d5f543
--- /dev/null
+++ b/drivers/platform/x86/dell-laptop.c
@@ -0,0 +1,2003 @@
+/*
+ * Driver for Dell laptop extras
+ *
+ * Copyright (c) Red Hat <mjg@redhat.com>
+ * Copyright (c) 2014 Gabriele Mazzotta <gabriele.mzt@gmail.com>
+ * Copyright (c) 2014 Pali Rohár <pali.rohar@gmail.com>
+ *
+ * Based on documentation in the libsmbios package:
+ * Copyright (C) 2005-2014 Dell Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/backlight.h>
+#include <linux/err.h>
+#include <linux/dmi.h>
+#include <linux/io.h>
+#include <linux/rfkill.h>
+#include <linux/power_supply.h>
+#include <linux/acpi.h>
+#include <linux/mm.h>
+#include <linux/i8042.h>
+#include <linux/slab.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include "../../firmware/dcdbas.h"
+
+#define BRIGHTNESS_TOKEN 0x7d
+#define KBD_LED_OFF_TOKEN 0x01E1
+#define KBD_LED_ON_TOKEN 0x01E2
+#define KBD_LED_AUTO_TOKEN 0x01E3
+#define KBD_LED_AUTO_25_TOKEN 0x02EA
+#define KBD_LED_AUTO_50_TOKEN 0x02EB
+#define KBD_LED_AUTO_75_TOKEN 0x02EC
+#define KBD_LED_AUTO_100_TOKEN 0x02F6
+
+/* This structure will be modified by the firmware when we enter
+ * system management mode, hence the volatiles */
+
+struct calling_interface_buffer {
+ u16 class;
+ u16 select;
+ volatile u32 input[4];
+ volatile u32 output[4];
+} __packed;
+
+struct calling_interface_token {
+ u16 tokenID;
+ u16 location;
+ union {
+ u16 value;
+ u16 stringlength;
+ };
+};
+
+struct calling_interface_structure {
+ struct dmi_header header;
+ u16 cmdIOAddress;
+ u8 cmdIOCode;
+ u32 supportedCmds;
+ struct calling_interface_token tokens[];
+} __packed;
+
+struct quirk_entry {
+ u8 touchpad_led;
+
+ int needs_kbd_timeouts;
+ /*
+ * Ordered list of timeouts expressed in seconds.
+ * The list must end with -1
+ */
+ int kbd_timeouts[];
+};
+
+static struct quirk_entry *quirks;
+
+static struct quirk_entry quirk_dell_vostro_v130 = {
+ .touchpad_led = 1,
+};
+
+static int __init dmi_matched(const struct dmi_system_id *dmi)
+{
+ quirks = dmi->driver_data;
+ return 1;
+}
+
+/*
+ * These values come from Windows utility provided by Dell. If any other value
+ * is used then BIOS silently set timeout to 0 without any error message.
+ */
+static struct quirk_entry quirk_dell_xps13_9333 = {
+ .needs_kbd_timeouts = 1,
+ .kbd_timeouts = { 0, 5, 15, 60, 5 * 60, 15 * 60, -1 },
+};
+
+static int da_command_address;
+static int da_command_code;
+static int da_num_tokens;
+static struct calling_interface_token *da_tokens;
+
+static struct platform_driver platform_driver = {
+ .driver = {
+ .name = "dell-laptop",
+ }
+};
+
+static struct platform_device *platform_device;
+static struct backlight_device *dell_backlight_device;
+static struct rfkill *wifi_rfkill;
+static struct rfkill *bluetooth_rfkill;
+static struct rfkill *wwan_rfkill;
+static bool force_rfkill;
+
+module_param(force_rfkill, bool, 0444);
+MODULE_PARM_DESC(force_rfkill, "enable rfkill on non whitelisted models");
+
+static const struct dmi_system_id dell_device_table[] __initconst = {
+ {
+ .ident = "Dell laptop",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
+ },
+ },
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /*Laptop*/
+ },
+ },
+ {
+ .ident = "Dell Computer Corporation",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
+ DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
+ },
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(dmi, dell_device_table);
+
+static const struct dmi_system_id dell_quirks[] __initconst = {
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Vostro V130",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V130"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Vostro V131",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Vostro 3350",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3350"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Vostro 3555",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3555"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Inspiron N311z",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron N311z"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Inspiron M5110",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron M5110"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Vostro 3360",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3360"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Vostro 3460",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3460"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Vostro 3560",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3560"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Vostro 3450",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Dell System Vostro 3450"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Inspiron 5420",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5420"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Inspiron 5520",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5520"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Inspiron 5720",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5720"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Inspiron 7420",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7420"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Inspiron 7520",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7520"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell Inspiron 7720",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"),
+ },
+ .driver_data = &quirk_dell_vostro_v130,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Dell XPS13 9333",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "XPS13 9333"),
+ },
+ .driver_data = &quirk_dell_xps13_9333,
+ },
+ { }
+};
+
+static struct calling_interface_buffer *buffer;
+static DEFINE_MUTEX(buffer_mutex);
+
+static int hwswitch_state;
+
+static void get_buffer(void)
+{
+ mutex_lock(&buffer_mutex);
+ memset(buffer, 0, sizeof(struct calling_interface_buffer));
+}
+
+static void release_buffer(void)
+{
+ mutex_unlock(&buffer_mutex);
+}
+
+static void __init parse_da_table(const struct dmi_header *dm)
+{
+ /* Final token is a terminator, so we don't want to copy it */
+ int tokens = (dm->length-11)/sizeof(struct calling_interface_token)-1;
+ struct calling_interface_token *new_da_tokens;
+ struct calling_interface_structure *table =
+ container_of(dm, struct calling_interface_structure, header);
+
+ /* 4 bytes of table header, plus 7 bytes of Dell header, plus at least
+ 6 bytes of entry */
+
+ if (dm->length < 17)
+ return;
+
+ da_command_address = table->cmdIOAddress;
+ da_command_code = table->cmdIOCode;
+
+ new_da_tokens = krealloc(da_tokens, (da_num_tokens + tokens) *
+ sizeof(struct calling_interface_token),
+ GFP_KERNEL);
+
+ if (!new_da_tokens)
+ return;
+ da_tokens = new_da_tokens;
+
+ memcpy(da_tokens+da_num_tokens, table->tokens,
+ sizeof(struct calling_interface_token) * tokens);
+
+ da_num_tokens += tokens;
+}
+
+static void __init find_tokens(const struct dmi_header *dm, void *dummy)
+{
+ switch (dm->type) {
+ case 0xd4: /* Indexed IO */
+ case 0xd5: /* Protected Area Type 1 */
+ case 0xd6: /* Protected Area Type 2 */
+ break;
+ case 0xda: /* Calling interface */
+ parse_da_table(dm);
+ break;
+ }
+}
+
+static int find_token_id(int tokenid)
+{
+ int i;
+
+ for (i = 0; i < da_num_tokens; i++) {
+ if (da_tokens[i].tokenID == tokenid)
+ return i;
+ }
+
+ return -1;
+}
+
+static int find_token_location(int tokenid)
+{
+ int id;
+
+ id = find_token_id(tokenid);
+ if (id == -1)
+ return -1;
+
+ return da_tokens[id].location;
+}
+
+static struct calling_interface_buffer *
+dell_send_request(struct calling_interface_buffer *buffer, int class,
+ int select)
+{
+ struct smi_cmd command;
+
+ command.magic = SMI_CMD_MAGIC;
+ command.command_address = da_command_address;
+ command.command_code = da_command_code;
+ command.ebx = virt_to_phys(buffer);
+ command.ecx = 0x42534931;
+
+ buffer->class = class;
+ buffer->select = select;
+
+ dcdbas_smi_request(&command);
+
+ return buffer;
+}
+
+static inline int dell_smi_error(int value)
+{
+ switch (value) {
+ case 0: /* Completed successfully */
+ return 0;
+ case -1: /* Completed with error */
+ return -EIO;
+ case -2: /* Function not supported */
+ return -ENXIO;
+ default: /* Unknown error */
+ return -EINVAL;
+ }
+}
+
+/* Derived from information in DellWirelessCtl.cpp:
+ Class 17, select 11 is radio control. It returns an array of 32-bit values.
+
+ Input byte 0 = 0: Wireless information
+
+ result[0]: return code
+ result[1]:
+ Bit 0: Hardware switch supported
+ Bit 1: Wifi locator supported
+ Bit 2: Wifi is supported
+ Bit 3: Bluetooth is supported
+ Bit 4: WWAN is supported
+ Bit 5: Wireless keyboard supported
+ Bits 6-7: Reserved
+ Bit 8: Wifi is installed
+ Bit 9: Bluetooth is installed
+ Bit 10: WWAN is installed
+ Bits 11-15: Reserved
+ Bit 16: Hardware switch is on
+ Bit 17: Wifi is blocked
+ Bit 18: Bluetooth is blocked
+ Bit 19: WWAN is blocked
+ Bits 20-31: Reserved
+ result[2]: NVRAM size in bytes
+ result[3]: NVRAM format version number
+
+ Input byte 0 = 2: Wireless switch configuration
+ result[0]: return code
+ result[1]:
+ Bit 0: Wifi controlled by switch
+ Bit 1: Bluetooth controlled by switch
+ Bit 2: WWAN controlled by switch
+ Bits 3-6: Reserved
+ Bit 7: Wireless switch config locked
+ Bit 8: Wifi locator enabled
+ Bits 9-14: Reserved
+ Bit 15: Wifi locator setting locked
+ Bits 16-31: Reserved
+*/
+
+static int dell_rfkill_set(void *data, bool blocked)
+{
+ int disable = blocked ? 1 : 0;
+ unsigned long radio = (unsigned long)data;
+ int hwswitch_bit = (unsigned long)data - 1;
+
+ get_buffer();
+ dell_send_request(buffer, 17, 11);
+
+ /* If the hardware switch controls this radio, and the hardware
+ switch is disabled, always disable the radio */
+ if ((hwswitch_state & BIT(hwswitch_bit)) &&
+ !(buffer->output[1] & BIT(16)))
+ disable = 1;
+
+ buffer->input[0] = (1 | (radio<<8) | (disable << 16));
+ dell_send_request(buffer, 17, 11);
+
+ release_buffer();
+ return 0;
+}
+
+/* Must be called with the buffer held */
+static void dell_rfkill_update_sw_state(struct rfkill *rfkill, int radio,
+ int status)
+{
+ if (status & BIT(0)) {
+ /* Has hw-switch, sync sw_state to BIOS */
+ int block = rfkill_blocked(rfkill);
+ buffer->input[0] = (1 | (radio << 8) | (block << 16));
+ dell_send_request(buffer, 17, 11);
+ } else {
+ /* No hw-switch, sync BIOS state to sw_state */
+ rfkill_set_sw_state(rfkill, !!(status & BIT(radio + 16)));
+ }
+}
+
+static void dell_rfkill_update_hw_state(struct rfkill *rfkill, int radio,
+ int status)
+{
+ if (hwswitch_state & (BIT(radio - 1)))
+ rfkill_set_hw_state(rfkill, !(status & BIT(16)));
+}
+
+static void dell_rfkill_query(struct rfkill *rfkill, void *data)
+{
+ int status;
+
+ get_buffer();
+ dell_send_request(buffer, 17, 11);
+ status = buffer->output[1];
+
+ dell_rfkill_update_hw_state(rfkill, (unsigned long)data, status);
+
+ release_buffer();
+}
+
+static const struct rfkill_ops dell_rfkill_ops = {
+ .set_block = dell_rfkill_set,
+ .query = dell_rfkill_query,
+};
+
+static struct dentry *dell_laptop_dir;
+
+static int dell_debugfs_show(struct seq_file *s, void *data)
+{
+ int status;
+
+ get_buffer();
+ dell_send_request(buffer, 17, 11);
+ status = buffer->output[1];
+ release_buffer();
+
+ seq_printf(s, "status:\t0x%X\n", status);
+ seq_printf(s, "Bit 0 : Hardware switch supported: %lu\n",
+ status & BIT(0));
+ seq_printf(s, "Bit 1 : Wifi locator supported: %lu\n",
+ (status & BIT(1)) >> 1);
+ seq_printf(s, "Bit 2 : Wifi is supported: %lu\n",
+ (status & BIT(2)) >> 2);
+ seq_printf(s, "Bit 3 : Bluetooth is supported: %lu\n",
+ (status & BIT(3)) >> 3);
+ seq_printf(s, "Bit 4 : WWAN is supported: %lu\n",
+ (status & BIT(4)) >> 4);
+ seq_printf(s, "Bit 5 : Wireless keyboard supported: %lu\n",
+ (status & BIT(5)) >> 5);
+ seq_printf(s, "Bit 8 : Wifi is installed: %lu\n",
+ (status & BIT(8)) >> 8);
+ seq_printf(s, "Bit 9 : Bluetooth is installed: %lu\n",
+ (status & BIT(9)) >> 9);
+ seq_printf(s, "Bit 10: WWAN is installed: %lu\n",
+ (status & BIT(10)) >> 10);
+ seq_printf(s, "Bit 16: Hardware switch is on: %lu\n",
+ (status & BIT(16)) >> 16);
+ seq_printf(s, "Bit 17: Wifi is blocked: %lu\n",
+ (status & BIT(17)) >> 17);
+ seq_printf(s, "Bit 18: Bluetooth is blocked: %lu\n",
+ (status & BIT(18)) >> 18);
+ seq_printf(s, "Bit 19: WWAN is blocked: %lu\n",
+ (status & BIT(19)) >> 19);
+
+ seq_printf(s, "\nhwswitch_state:\t0x%X\n", hwswitch_state);
+ seq_printf(s, "Bit 0 : Wifi controlled by switch: %lu\n",
+ hwswitch_state & BIT(0));
+ seq_printf(s, "Bit 1 : Bluetooth controlled by switch: %lu\n",
+ (hwswitch_state & BIT(1)) >> 1);
+ seq_printf(s, "Bit 2 : WWAN controlled by switch: %lu\n",
+ (hwswitch_state & BIT(2)) >> 2);
+ seq_printf(s, "Bit 7 : Wireless switch config locked: %lu\n",
+ (hwswitch_state & BIT(7)) >> 7);
+ seq_printf(s, "Bit 8 : Wifi locator enabled: %lu\n",
+ (hwswitch_state & BIT(8)) >> 8);
+ seq_printf(s, "Bit 15: Wifi locator setting locked: %lu\n",
+ (hwswitch_state & BIT(15)) >> 15);
+
+ return 0;
+}
+
+static int dell_debugfs_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, dell_debugfs_show, inode->i_private);
+}
+
+static const struct file_operations dell_debugfs_fops = {
+ .owner = THIS_MODULE,
+ .open = dell_debugfs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void dell_update_rfkill(struct work_struct *ignored)
+{
+ int status;
+
+ get_buffer();
+ dell_send_request(buffer, 17, 11);
+ status = buffer->output[1];
+
+ if (wifi_rfkill) {
+ dell_rfkill_update_hw_state(wifi_rfkill, 1, status);
+ dell_rfkill_update_sw_state(wifi_rfkill, 1, status);
+ }
+ if (bluetooth_rfkill) {
+ dell_rfkill_update_hw_state(bluetooth_rfkill, 2, status);
+ dell_rfkill_update_sw_state(bluetooth_rfkill, 2, status);
+ }
+ if (wwan_rfkill) {
+ dell_rfkill_update_hw_state(wwan_rfkill, 3, status);
+ dell_rfkill_update_sw_state(wwan_rfkill, 3, status);
+ }
+
+ release_buffer();
+}
+static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill);
+
+static bool dell_laptop_i8042_filter(unsigned char data, unsigned char str,
+ struct serio *port)
+{
+ static bool extended;
+
+ if (str & I8042_STR_AUXDATA)
+ return false;
+
+ if (unlikely(data == 0xe0)) {
+ extended = true;
+ return false;
+ } else if (unlikely(extended)) {
+ switch (data) {
+ case 0x8:
+ schedule_delayed_work(&dell_rfkill_work,
+ round_jiffies_relative(HZ / 4));
+ break;
+ }
+ extended = false;
+ }
+
+ return false;
+}
+
+static int __init dell_setup_rfkill(void)
+{
+ int status, ret, whitelisted;
+ const char *product;
+
+ /*
+ * rfkill support causes trouble on various models, mostly Inspirons.
+ * So we whitelist certain series, and don't support rfkill on others.
+ */
+ whitelisted = 0;
+ product = dmi_get_system_info(DMI_PRODUCT_NAME);
+ if (product && (strncmp(product, "Latitude", 8) == 0 ||
+ strncmp(product, "Precision", 9) == 0))
+ whitelisted = 1;
+ if (!force_rfkill && !whitelisted)
+ return 0;
+
+ get_buffer();
+ dell_send_request(buffer, 17, 11);
+ status = buffer->output[1];
+ buffer->input[0] = 0x2;
+ dell_send_request(buffer, 17, 11);
+ hwswitch_state = buffer->output[1];
+ release_buffer();
+
+ if (!(status & BIT(0))) {
+ if (force_rfkill) {
+ /* No hwsitch, clear all hw-controlled bits */
+ hwswitch_state &= ~7;
+ } else {
+ /* rfkill is only tested on laptops with a hwswitch */
+ return 0;
+ }
+ }
+
+ if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) {
+ wifi_rfkill = rfkill_alloc("dell-wifi", &platform_device->dev,
+ RFKILL_TYPE_WLAN,
+ &dell_rfkill_ops, (void *) 1);
+ if (!wifi_rfkill) {
+ ret = -ENOMEM;
+ goto err_wifi;
+ }
+ ret = rfkill_register(wifi_rfkill);
+ if (ret)
+ goto err_wifi;
+ }
+
+ if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) {
+ bluetooth_rfkill = rfkill_alloc("dell-bluetooth",
+ &platform_device->dev,
+ RFKILL_TYPE_BLUETOOTH,
+ &dell_rfkill_ops, (void *) 2);
+ if (!bluetooth_rfkill) {
+ ret = -ENOMEM;
+ goto err_bluetooth;
+ }
+ ret = rfkill_register(bluetooth_rfkill);
+ if (ret)
+ goto err_bluetooth;
+ }
+
+ if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) {
+ wwan_rfkill = rfkill_alloc("dell-wwan",
+ &platform_device->dev,
+ RFKILL_TYPE_WWAN,
+ &dell_rfkill_ops, (void *) 3);
+ if (!wwan_rfkill) {
+ ret = -ENOMEM;
+ goto err_wwan;
+ }
+ ret = rfkill_register(wwan_rfkill);
+ if (ret)
+ goto err_wwan;
+ }
+
+ ret = i8042_install_filter(dell_laptop_i8042_filter);
+ if (ret) {
+ pr_warn("Unable to install key filter\n");
+ goto err_filter;
+ }
+
+ return 0;
+err_filter:
+ if (wwan_rfkill)
+ rfkill_unregister(wwan_rfkill);
+err_wwan:
+ rfkill_destroy(wwan_rfkill);
+ if (bluetooth_rfkill)
+ rfkill_unregister(bluetooth_rfkill);
+err_bluetooth:
+ rfkill_destroy(bluetooth_rfkill);
+ if (wifi_rfkill)
+ rfkill_unregister(wifi_rfkill);
+err_wifi:
+ rfkill_destroy(wifi_rfkill);
+
+ return ret;
+}
+
+static void dell_cleanup_rfkill(void)
+{
+ if (wifi_rfkill) {
+ rfkill_unregister(wifi_rfkill);
+ rfkill_destroy(wifi_rfkill);
+ }
+ if (bluetooth_rfkill) {
+ rfkill_unregister(bluetooth_rfkill);
+ rfkill_destroy(bluetooth_rfkill);
+ }
+ if (wwan_rfkill) {
+ rfkill_unregister(wwan_rfkill);
+ rfkill_destroy(wwan_rfkill);
+ }
+}
+
+static int dell_send_intensity(struct backlight_device *bd)
+{
+ int ret = 0;
+
+ get_buffer();
+ buffer->input[0] = find_token_location(BRIGHTNESS_TOKEN);
+ buffer->input[1] = bd->props.brightness;
+
+ if (buffer->input[0] == -1) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ if (power_supply_is_system_supplied() > 0)
+ dell_send_request(buffer, 1, 2);
+ else
+ dell_send_request(buffer, 1, 1);
+
+ out:
+ release_buffer();
+ return ret;
+}
+
+static int dell_get_intensity(struct backlight_device *bd)
+{
+ int ret = 0;
+
+ get_buffer();
+ buffer->input[0] = find_token_location(BRIGHTNESS_TOKEN);
+
+ if (buffer->input[0] == -1) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ if (power_supply_is_system_supplied() > 0)
+ dell_send_request(buffer, 0, 2);
+ else
+ dell_send_request(buffer, 0, 1);
+
+ ret = buffer->output[1];
+
+ out:
+ release_buffer();
+ return ret;
+}
+
+static const struct backlight_ops dell_ops = {
+ .get_brightness = dell_get_intensity,
+ .update_status = dell_send_intensity,
+};
+
+static void touchpad_led_on(void)
+{
+ int command = 0x97;
+ char data = 1;
+ i8042_command(&data, command | 1 << 12);
+}
+
+static void touchpad_led_off(void)
+{
+ int command = 0x97;
+ char data = 2;
+ i8042_command(&data, command | 1 << 12);
+}
+
+static void touchpad_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ if (value > 0)
+ touchpad_led_on();
+ else
+ touchpad_led_off();
+}
+
+static struct led_classdev touchpad_led = {
+ .name = "dell-laptop::touchpad",
+ .brightness_set = touchpad_led_set,
+ .flags = LED_CORE_SUSPENDRESUME,
+};
+
+static int __init touchpad_led_init(struct device *dev)
+{
+ return led_classdev_register(dev, &touchpad_led);
+}
+
+static void touchpad_led_exit(void)
+{
+ led_classdev_unregister(&touchpad_led);
+}
+
+/*
+ * Derived from information in smbios-keyboard-ctl:
+ *
+ * cbClass 4
+ * cbSelect 11
+ * Keyboard illumination
+ * cbArg1 determines the function to be performed
+ *
+ * cbArg1 0x0 = Get Feature Information
+ * cbRES1 Standard return codes (0, -1, -2)
+ * cbRES2, word0 Bitmap of user-selectable modes
+ * bit 0 Always off (All systems)
+ * bit 1 Always on (Travis ATG, Siberia)
+ * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG)
+ * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off
+ * bit 4 Auto: Input-activity-based On; input-activity based Off
+ * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off
+ * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off
+ * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off
+ * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off
+ * bits 9-15 Reserved for future use
+ * cbRES2, byte2 Reserved for future use
+ * cbRES2, byte3 Keyboard illumination type
+ * 0 Reserved
+ * 1 Tasklight
+ * 2 Backlight
+ * 3-255 Reserved for future use
+ * cbRES3, byte0 Supported auto keyboard illumination trigger bitmap.
+ * bit 0 Any keystroke
+ * bit 1 Touchpad activity
+ * bit 2 Pointing stick
+ * bit 3 Any mouse
+ * bits 4-7 Reserved for future use
+ * cbRES3, byte1 Supported timeout unit bitmap
+ * bit 0 Seconds
+ * bit 1 Minutes
+ * bit 2 Hours
+ * bit 3 Days
+ * bits 4-7 Reserved for future use
+ * cbRES3, byte2 Number of keyboard light brightness levels
+ * cbRES4, byte0 Maximum acceptable seconds value (0 if seconds not supported).
+ * cbRES4, byte1 Maximum acceptable minutes value (0 if minutes not supported).
+ * cbRES4, byte2 Maximum acceptable hours value (0 if hours not supported).
+ * cbRES4, byte3 Maximum acceptable days value (0 if days not supported)
+ *
+ * cbArg1 0x1 = Get Current State
+ * cbRES1 Standard return codes (0, -1, -2)
+ * cbRES2, word0 Bitmap of current mode state
+ * bit 0 Always off (All systems)
+ * bit 1 Always on (Travis ATG, Siberia)
+ * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG)
+ * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off
+ * bit 4 Auto: Input-activity-based On; input-activity based Off
+ * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off
+ * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off
+ * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off
+ * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off
+ * bits 9-15 Reserved for future use
+ * Note: Only One bit can be set
+ * cbRES2, byte2 Currently active auto keyboard illumination triggers.
+ * bit 0 Any keystroke
+ * bit 1 Touchpad activity
+ * bit 2 Pointing stick
+ * bit 3 Any mouse
+ * bits 4-7 Reserved for future use
+ * cbRES2, byte3 Current Timeout
+ * bits 7:6 Timeout units indicator:
+ * 00b Seconds
+ * 01b Minutes
+ * 10b Hours
+ * 11b Days
+ * bits 5:0 Timeout value (0-63) in sec/min/hr/day
+ * NOTE: A value of 0 means always on (no timeout) if any bits of RES3 byte
+ * are set upon return from the [Get feature information] call.
+ * cbRES3, byte0 Current setting of ALS value that turns the light on or off.
+ * cbRES3, byte1 Current ALS reading
+ * cbRES3, byte2 Current keyboard light level.
+ *
+ * cbArg1 0x2 = Set New State
+ * cbRES1 Standard return codes (0, -1, -2)
+ * cbArg2, word0 Bitmap of current mode state
+ * bit 0 Always off (All systems)
+ * bit 1 Always on (Travis ATG, Siberia)
+ * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG)
+ * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off
+ * bit 4 Auto: Input-activity-based On; input-activity based Off
+ * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off
+ * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off
+ * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off
+ * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off
+ * bits 9-15 Reserved for future use
+ * Note: Only One bit can be set
+ * cbArg2, byte2 Desired auto keyboard illumination triggers. Must remain inactive to allow
+ * keyboard to turn off automatically.
+ * bit 0 Any keystroke
+ * bit 1 Touchpad activity
+ * bit 2 Pointing stick
+ * bit 3 Any mouse
+ * bits 4-7 Reserved for future use
+ * cbArg2, byte3 Desired Timeout
+ * bits 7:6 Timeout units indicator:
+ * 00b Seconds
+ * 01b Minutes
+ * 10b Hours
+ * 11b Days
+ * bits 5:0 Timeout value (0-63) in sec/min/hr/day
+ * cbArg3, byte0 Desired setting of ALS value that turns the light on or off.
+ * cbArg3, byte2 Desired keyboard light level.
+ */
+
+
+enum kbd_timeout_unit {
+ KBD_TIMEOUT_SECONDS = 0,
+ KBD_TIMEOUT_MINUTES,
+ KBD_TIMEOUT_HOURS,
+ KBD_TIMEOUT_DAYS,
+};
+
+enum kbd_mode_bit {
+ KBD_MODE_BIT_OFF = 0,
+ KBD_MODE_BIT_ON,
+ KBD_MODE_BIT_ALS,
+ KBD_MODE_BIT_TRIGGER_ALS,
+ KBD_MODE_BIT_TRIGGER,
+ KBD_MODE_BIT_TRIGGER_25,
+ KBD_MODE_BIT_TRIGGER_50,
+ KBD_MODE_BIT_TRIGGER_75,
+ KBD_MODE_BIT_TRIGGER_100,
+};
+
+#define kbd_is_als_mode_bit(bit) \
+ ((bit) == KBD_MODE_BIT_ALS || (bit) == KBD_MODE_BIT_TRIGGER_ALS)
+#define kbd_is_trigger_mode_bit(bit) \
+ ((bit) >= KBD_MODE_BIT_TRIGGER_ALS && (bit) <= KBD_MODE_BIT_TRIGGER_100)
+#define kbd_is_level_mode_bit(bit) \
+ ((bit) >= KBD_MODE_BIT_TRIGGER_25 && (bit) <= KBD_MODE_BIT_TRIGGER_100)
+
+struct kbd_info {
+ u16 modes;
+ u8 type;
+ u8 triggers;
+ u8 levels;
+ u8 seconds;
+ u8 minutes;
+ u8 hours;
+ u8 days;
+};
+
+struct kbd_state {
+ u8 mode_bit;
+ u8 triggers;
+ u8 timeout_value;
+ u8 timeout_unit;
+ u8 als_setting;
+ u8 als_value;
+ u8 level;
+};
+
+static const int kbd_tokens[] = {
+ KBD_LED_OFF_TOKEN,
+ KBD_LED_AUTO_25_TOKEN,
+ KBD_LED_AUTO_50_TOKEN,
+ KBD_LED_AUTO_75_TOKEN,
+ KBD_LED_AUTO_100_TOKEN,
+ KBD_LED_ON_TOKEN,
+};
+
+static u16 kbd_token_bits;
+
+static struct kbd_info kbd_info;
+static bool kbd_als_supported;
+static bool kbd_triggers_supported;
+
+static u8 kbd_mode_levels[16];
+static int kbd_mode_levels_count;
+
+static u8 kbd_previous_level;
+static u8 kbd_previous_mode_bit;
+
+static bool kbd_led_present;
+
+/*
+ * NOTE: there are three ways to set the keyboard backlight level.
+ * First, via kbd_state.mode_bit (assigning KBD_MODE_BIT_TRIGGER_* value).
+ * Second, via kbd_state.level (assigning numerical value <= kbd_info.levels).
+ * Third, via SMBIOS tokens (KBD_LED_* in kbd_tokens)
+ *
+ * There are laptops which support only one of these methods. If we want to
+ * support as many machines as possible we need to implement all three methods.
+ * The first two methods use the kbd_state structure. The third uses SMBIOS
+ * tokens. If kbd_info.levels == 0, the machine does not support setting the
+ * keyboard backlight level via kbd_state.level.
+ */
+
+static int kbd_get_info(struct kbd_info *info)
+{
+ u8 units;
+ int ret;
+
+ get_buffer();
+
+ buffer->input[0] = 0x0;
+ dell_send_request(buffer, 4, 11);
+ ret = buffer->output[0];
+
+ if (ret) {
+ ret = dell_smi_error(ret);
+ goto out;
+ }
+
+ info->modes = buffer->output[1] & 0xFFFF;
+ info->type = (buffer->output[1] >> 24) & 0xFF;
+ info->triggers = buffer->output[2] & 0xFF;
+ units = (buffer->output[2] >> 8) & 0xFF;
+ info->levels = (buffer->output[2] >> 16) & 0xFF;
+
+ if (units & BIT(0))
+ info->seconds = (buffer->output[3] >> 0) & 0xFF;
+ if (units & BIT(1))
+ info->minutes = (buffer->output[3] >> 8) & 0xFF;
+ if (units & BIT(2))
+ info->hours = (buffer->output[3] >> 16) & 0xFF;
+ if (units & BIT(3))
+ info->days = (buffer->output[3] >> 24) & 0xFF;
+
+ out:
+ release_buffer();
+ return ret;
+}
+
+static unsigned int kbd_get_max_level(void)
+{
+ if (kbd_info.levels != 0)
+ return kbd_info.levels;
+ if (kbd_mode_levels_count > 0)
+ return kbd_mode_levels_count - 1;
+ return 0;
+}
+
+static int kbd_get_level(struct kbd_state *state)
+{
+ int i;
+
+ if (kbd_info.levels != 0)
+ return state->level;
+
+ if (kbd_mode_levels_count > 0) {
+ for (i = 0; i < kbd_mode_levels_count; ++i)
+ if (kbd_mode_levels[i] == state->mode_bit)
+ return i;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int kbd_set_level(struct kbd_state *state, u8 level)
+{
+ if (kbd_info.levels != 0) {
+ if (level != 0)
+ kbd_previous_level = level;
+ if (state->level == level)
+ return 0;
+ state->level = level;
+ if (level != 0 && state->mode_bit == KBD_MODE_BIT_OFF)
+ state->mode_bit = kbd_previous_mode_bit;
+ else if (level == 0 && state->mode_bit != KBD_MODE_BIT_OFF) {
+ kbd_previous_mode_bit = state->mode_bit;
+ state->mode_bit = KBD_MODE_BIT_OFF;
+ }
+ return 0;
+ }
+
+ if (kbd_mode_levels_count > 0 && level < kbd_mode_levels_count) {
+ if (level != 0)
+ kbd_previous_level = level;
+ state->mode_bit = kbd_mode_levels[level];
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int kbd_get_state(struct kbd_state *state)
+{
+ int ret;
+
+ get_buffer();
+
+ buffer->input[0] = 0x1;
+ dell_send_request(buffer, 4, 11);
+ ret = buffer->output[0];
+
+ if (ret) {
+ ret = dell_smi_error(ret);
+ goto out;
+ }
+
+ state->mode_bit = ffs(buffer->output[1] & 0xFFFF);
+ if (state->mode_bit != 0)
+ state->mode_bit--;
+
+ state->triggers = (buffer->output[1] >> 16) & 0xFF;
+ state->timeout_value = (buffer->output[1] >> 24) & 0x3F;
+ state->timeout_unit = (buffer->output[1] >> 30) & 0x3;
+ state->als_setting = buffer->output[2] & 0xFF;
+ state->als_value = (buffer->output[2] >> 8) & 0xFF;
+ state->level = (buffer->output[2] >> 16) & 0xFF;
+
+ out:
+ release_buffer();
+ return ret;
+}
+
+static int kbd_set_state(struct kbd_state *state)
+{
+ int ret;
+
+ get_buffer();
+ buffer->input[0] = 0x2;
+ buffer->input[1] = BIT(state->mode_bit) & 0xFFFF;
+ buffer->input[1] |= (state->triggers & 0xFF) << 16;
+ buffer->input[1] |= (state->timeout_value & 0x3F) << 24;
+ buffer->input[1] |= (state->timeout_unit & 0x3) << 30;
+ buffer->input[2] = state->als_setting & 0xFF;
+ buffer->input[2] |= (state->level & 0xFF) << 16;
+ dell_send_request(buffer, 4, 11);
+ ret = buffer->output[0];
+ release_buffer();
+
+ return dell_smi_error(ret);
+}
+
+static int kbd_set_state_safe(struct kbd_state *state, struct kbd_state *old)
+{
+ int ret;
+
+ ret = kbd_set_state(state);
+ if (ret == 0)
+ return 0;
+
+ /*
+ * When setting the new state fails,try to restore the previous one.
+ * This is needed on some machines where BIOS sets a default state when
+ * setting a new state fails. This default state could be all off.
+ */
+
+ if (kbd_set_state(old))
+ pr_err("Setting old previous keyboard state failed\n");
+
+ return ret;
+}
+
+static int kbd_set_token_bit(u8 bit)
+{
+ int id;
+ int ret;
+
+ if (bit >= ARRAY_SIZE(kbd_tokens))
+ return -EINVAL;
+
+ id = find_token_id(kbd_tokens[bit]);
+ if (id == -1)
+ return -EINVAL;
+
+ get_buffer();
+ buffer->input[0] = da_tokens[id].location;
+ buffer->input[1] = da_tokens[id].value;
+ dell_send_request(buffer, 1, 0);
+ ret = buffer->output[0];
+ release_buffer();
+
+ return dell_smi_error(ret);
+}
+
+static int kbd_get_token_bit(u8 bit)
+{
+ int id;
+ int ret;
+ int val;
+
+ if (bit >= ARRAY_SIZE(kbd_tokens))
+ return -EINVAL;
+
+ id = find_token_id(kbd_tokens[bit]);
+ if (id == -1)
+ return -EINVAL;
+
+ get_buffer();
+ buffer->input[0] = da_tokens[id].location;
+ dell_send_request(buffer, 0, 0);
+ ret = buffer->output[0];
+ val = buffer->output[1];
+ release_buffer();
+
+ if (ret)
+ return dell_smi_error(ret);
+
+ return (val == da_tokens[id].value);
+}
+
+static int kbd_get_first_active_token_bit(void)
+{
+ int i;
+ int ret;
+
+ for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) {
+ ret = kbd_get_token_bit(i);
+ if (ret == 1)
+ return i;
+ }
+
+ return ret;
+}
+
+static int kbd_get_valid_token_counts(void)
+{
+ return hweight16(kbd_token_bits);
+}
+
+static inline int kbd_init_info(void)
+{
+ struct kbd_state state;
+ int ret;
+ int i;
+
+ ret = kbd_get_info(&kbd_info);
+ if (ret)
+ return ret;
+
+ kbd_get_state(&state);
+
+ /* NOTE: timeout value is stored in 6 bits so max value is 63 */
+ if (kbd_info.seconds > 63)
+ kbd_info.seconds = 63;
+ if (kbd_info.minutes > 63)
+ kbd_info.minutes = 63;
+ if (kbd_info.hours > 63)
+ kbd_info.hours = 63;
+ if (kbd_info.days > 63)
+ kbd_info.days = 63;
+
+ /* NOTE: On tested machines ON mode did not work and caused
+ * problems (turned backlight off) so do not use it
+ */
+ kbd_info.modes &= ~BIT(KBD_MODE_BIT_ON);
+
+ kbd_previous_level = kbd_get_level(&state);
+ kbd_previous_mode_bit = state.mode_bit;
+
+ if (kbd_previous_level == 0 && kbd_get_max_level() != 0)
+ kbd_previous_level = 1;
+
+ if (kbd_previous_mode_bit == KBD_MODE_BIT_OFF) {
+ kbd_previous_mode_bit =
+ ffs(kbd_info.modes & ~BIT(KBD_MODE_BIT_OFF));
+ if (kbd_previous_mode_bit != 0)
+ kbd_previous_mode_bit--;
+ }
+
+ if (kbd_info.modes & (BIT(KBD_MODE_BIT_ALS) |
+ BIT(KBD_MODE_BIT_TRIGGER_ALS)))
+ kbd_als_supported = true;
+
+ if (kbd_info.modes & (
+ BIT(KBD_MODE_BIT_TRIGGER_ALS) | BIT(KBD_MODE_BIT_TRIGGER) |
+ BIT(KBD_MODE_BIT_TRIGGER_25) | BIT(KBD_MODE_BIT_TRIGGER_50) |
+ BIT(KBD_MODE_BIT_TRIGGER_75) | BIT(KBD_MODE_BIT_TRIGGER_100)
+ ))
+ kbd_triggers_supported = true;
+
+ /* kbd_mode_levels[0] is reserved, see below */
+ for (i = 0; i < 16; ++i)
+ if (kbd_is_level_mode_bit(i) && (BIT(i) & kbd_info.modes))
+ kbd_mode_levels[1 + kbd_mode_levels_count++] = i;
+
+ /*
+ * Find the first supported mode and assign to kbd_mode_levels[0].
+ * This should be 0 (off), but we cannot depend on the BIOS to
+ * support 0.
+ */
+ if (kbd_mode_levels_count > 0) {
+ for (i = 0; i < 16; ++i) {
+ if (BIT(i) & kbd_info.modes) {
+ kbd_mode_levels[0] = i;
+ break;
+ }
+ }
+ kbd_mode_levels_count++;
+ }
+
+ return 0;
+
+}
+
+static inline void kbd_init_tokens(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i)
+ if (find_token_id(kbd_tokens[i]) != -1)
+ kbd_token_bits |= BIT(i);
+}
+
+static void kbd_init(void)
+{
+ int ret;
+
+ ret = kbd_init_info();
+ kbd_init_tokens();
+
+ if (kbd_token_bits != 0 || ret == 0)
+ kbd_led_present = true;
+}
+
+static ssize_t kbd_led_timeout_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct kbd_state new_state;
+ struct kbd_state state;
+ bool convert;
+ int value;
+ int ret;
+ char ch;
+ u8 unit;
+ int i;
+
+ ret = sscanf(buf, "%d %c", &value, &ch);
+ if (ret < 1)
+ return -EINVAL;
+ else if (ret == 1)
+ ch = 's';
+
+ if (value < 0)
+ return -EINVAL;
+
+ convert = false;
+
+ switch (ch) {
+ case 's':
+ if (value > kbd_info.seconds)
+ convert = true;
+ unit = KBD_TIMEOUT_SECONDS;
+ break;
+ case 'm':
+ if (value > kbd_info.minutes)
+ convert = true;
+ unit = KBD_TIMEOUT_MINUTES;
+ break;
+ case 'h':
+ if (value > kbd_info.hours)
+ convert = true;
+ unit = KBD_TIMEOUT_HOURS;
+ break;
+ case 'd':
+ if (value > kbd_info.days)
+ convert = true;
+ unit = KBD_TIMEOUT_DAYS;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (quirks && quirks->needs_kbd_timeouts)
+ convert = true;
+
+ if (convert) {
+ /* Convert value from current units to seconds */
+ switch (unit) {
+ case KBD_TIMEOUT_DAYS:
+ value *= 24;
+ case KBD_TIMEOUT_HOURS:
+ value *= 60;
+ case KBD_TIMEOUT_MINUTES:
+ value *= 60;
+ unit = KBD_TIMEOUT_SECONDS;
+ }
+
+ if (quirks && quirks->needs_kbd_timeouts) {
+ for (i = 0; quirks->kbd_timeouts[i] != -1; i++) {
+ if (value <= quirks->kbd_timeouts[i]) {
+ value = quirks->kbd_timeouts[i];
+ break;
+ }
+ }
+ }
+
+ if (value <= kbd_info.seconds && kbd_info.seconds) {
+ unit = KBD_TIMEOUT_SECONDS;
+ } else if (value / 60 <= kbd_info.minutes && kbd_info.minutes) {
+ value /= 60;
+ unit = KBD_TIMEOUT_MINUTES;
+ } else if (value / (60 * 60) <= kbd_info.hours && kbd_info.hours) {
+ value /= (60 * 60);
+ unit = KBD_TIMEOUT_HOURS;
+ } else if (value / (60 * 60 * 24) <= kbd_info.days && kbd_info.days) {
+ value /= (60 * 60 * 24);
+ unit = KBD_TIMEOUT_DAYS;
+ } else {
+ return -EINVAL;
+ }
+ }
+
+ ret = kbd_get_state(&state);
+ if (ret)
+ return ret;
+
+ new_state = state;
+ new_state.timeout_value = value;
+ new_state.timeout_unit = unit;
+
+ ret = kbd_set_state_safe(&new_state, &state);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static ssize_t kbd_led_timeout_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct kbd_state state;
+ int ret;
+ int len;
+
+ ret = kbd_get_state(&state);
+ if (ret)
+ return ret;
+
+ len = sprintf(buf, "%d", state.timeout_value);
+
+ switch (state.timeout_unit) {
+ case KBD_TIMEOUT_SECONDS:
+ return len + sprintf(buf+len, "s\n");
+ case KBD_TIMEOUT_MINUTES:
+ return len + sprintf(buf+len, "m\n");
+ case KBD_TIMEOUT_HOURS:
+ return len + sprintf(buf+len, "h\n");
+ case KBD_TIMEOUT_DAYS:
+ return len + sprintf(buf+len, "d\n");
+ default:
+ return -EINVAL;
+ }
+
+ return len;
+}
+
+static DEVICE_ATTR(stop_timeout, S_IRUGO | S_IWUSR,
+ kbd_led_timeout_show, kbd_led_timeout_store);
+
+static const char * const kbd_led_triggers[] = {
+ "keyboard",
+ "touchpad",
+ /*"trackstick"*/ NULL, /* NOTE: trackstick is just alias for touchpad */
+ "mouse",
+};
+
+static ssize_t kbd_led_triggers_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct kbd_state new_state;
+ struct kbd_state state;
+ bool triggers_enabled = false;
+ int trigger_bit = -1;
+ char trigger[21];
+ int i, ret;
+
+ ret = sscanf(buf, "%20s", trigger);
+ if (ret != 1)
+ return -EINVAL;
+
+ if (trigger[0] != '+' && trigger[0] != '-')
+ return -EINVAL;
+
+ ret = kbd_get_state(&state);
+ if (ret)
+ return ret;
+
+ if (kbd_triggers_supported)
+ triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit);
+
+ if (kbd_triggers_supported) {
+ for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) {
+ if (!(kbd_info.triggers & BIT(i)))
+ continue;
+ if (!kbd_led_triggers[i])
+ continue;
+ if (strcmp(trigger+1, kbd_led_triggers[i]) != 0)
+ continue;
+ if (trigger[0] == '+' &&
+ triggers_enabled && (state.triggers & BIT(i)))
+ return count;
+ if (trigger[0] == '-' &&
+ (!triggers_enabled || !(state.triggers & BIT(i))))
+ return count;
+ trigger_bit = i;
+ break;
+ }
+ }
+
+ if (trigger_bit != -1) {
+ new_state = state;
+ if (trigger[0] == '+')
+ new_state.triggers |= BIT(trigger_bit);
+ else {
+ new_state.triggers &= ~BIT(trigger_bit);
+ /* NOTE: trackstick bit (2) must be disabled when
+ * disabling touchpad bit (1), otherwise touchpad
+ * bit (1) will not be disabled */
+ if (trigger_bit == 1)
+ new_state.triggers &= ~BIT(2);
+ }
+ if ((kbd_info.triggers & new_state.triggers) !=
+ new_state.triggers)
+ return -EINVAL;
+ if (new_state.triggers && !triggers_enabled) {
+ new_state.mode_bit = KBD_MODE_BIT_TRIGGER;
+ kbd_set_level(&new_state, kbd_previous_level);
+ } else if (new_state.triggers == 0) {
+ kbd_set_level(&new_state, 0);
+ }
+ if (!(kbd_info.modes & BIT(new_state.mode_bit)))
+ return -EINVAL;
+ ret = kbd_set_state_safe(&new_state, &state);
+ if (ret)
+ return ret;
+ if (new_state.mode_bit != KBD_MODE_BIT_OFF)
+ kbd_previous_mode_bit = new_state.mode_bit;
+ return count;
+ }
+
+ return -EINVAL;
+}
+
+static ssize_t kbd_led_triggers_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct kbd_state state;
+ bool triggers_enabled;
+ int level, i, ret;
+ int len = 0;
+
+ ret = kbd_get_state(&state);
+ if (ret)
+ return ret;
+
+ len = 0;
+
+ if (kbd_triggers_supported) {
+ triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit);
+ level = kbd_get_level(&state);
+ for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) {
+ if (!(kbd_info.triggers & BIT(i)))
+ continue;
+ if (!kbd_led_triggers[i])
+ continue;
+ if ((triggers_enabled || level <= 0) &&
+ (state.triggers & BIT(i)))
+ buf[len++] = '+';
+ else
+ buf[len++] = '-';
+ len += sprintf(buf+len, "%s ", kbd_led_triggers[i]);
+ }
+ }
+
+ if (len)
+ buf[len - 1] = '\n';
+
+ return len;
+}
+
+static DEVICE_ATTR(start_triggers, S_IRUGO | S_IWUSR,
+ kbd_led_triggers_show, kbd_led_triggers_store);
+
+static ssize_t kbd_led_als_enabled_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct kbd_state new_state;
+ struct kbd_state state;
+ bool triggers_enabled = false;
+ int enable;
+ int ret;
+
+ ret = kstrtoint(buf, 0, &enable);
+ if (ret)
+ return ret;
+
+ ret = kbd_get_state(&state);
+ if (ret)
+ return ret;
+
+ if (enable == kbd_is_als_mode_bit(state.mode_bit))
+ return count;
+
+ new_state = state;
+
+ if (kbd_triggers_supported)
+ triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit);
+
+ if (enable) {
+ if (triggers_enabled)
+ new_state.mode_bit = KBD_MODE_BIT_TRIGGER_ALS;
+ else
+ new_state.mode_bit = KBD_MODE_BIT_ALS;
+ } else {
+ if (triggers_enabled) {
+ new_state.mode_bit = KBD_MODE_BIT_TRIGGER;
+ kbd_set_level(&new_state, kbd_previous_level);
+ } else {
+ new_state.mode_bit = KBD_MODE_BIT_ON;
+ }
+ }
+ if (!(kbd_info.modes & BIT(new_state.mode_bit)))
+ return -EINVAL;
+
+ ret = kbd_set_state_safe(&new_state, &state);
+ if (ret)
+ return ret;
+ kbd_previous_mode_bit = new_state.mode_bit;
+
+ return count;
+}
+
+static ssize_t kbd_led_als_enabled_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct kbd_state state;
+ bool enabled = false;
+ int ret;
+
+ ret = kbd_get_state(&state);
+ if (ret)
+ return ret;
+ enabled = kbd_is_als_mode_bit(state.mode_bit);
+
+ return sprintf(buf, "%d\n", enabled ? 1 : 0);
+}
+
+static DEVICE_ATTR(als_enabled, S_IRUGO | S_IWUSR,
+ kbd_led_als_enabled_show, kbd_led_als_enabled_store);
+
+static ssize_t kbd_led_als_setting_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct kbd_state state;
+ struct kbd_state new_state;
+ u8 setting;
+ int ret;
+
+ ret = kstrtou8(buf, 10, &setting);
+ if (ret)
+ return ret;
+
+ ret = kbd_get_state(&state);
+ if (ret)
+ return ret;
+
+ new_state = state;
+ new_state.als_setting = setting;
+
+ ret = kbd_set_state_safe(&new_state, &state);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static ssize_t kbd_led_als_setting_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct kbd_state state;
+ int ret;
+
+ ret = kbd_get_state(&state);
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "%d\n", state.als_setting);
+}
+
+static DEVICE_ATTR(als_setting, S_IRUGO | S_IWUSR,
+ kbd_led_als_setting_show, kbd_led_als_setting_store);
+
+static struct attribute *kbd_led_attrs[] = {
+ &dev_attr_stop_timeout.attr,
+ &dev_attr_start_triggers.attr,
+ NULL,
+};
+
+static const struct attribute_group kbd_led_group = {
+ .attrs = kbd_led_attrs,
+};
+
+static struct attribute *kbd_led_als_attrs[] = {
+ &dev_attr_als_enabled.attr,
+ &dev_attr_als_setting.attr,
+ NULL,
+};
+
+static const struct attribute_group kbd_led_als_group = {
+ .attrs = kbd_led_als_attrs,
+};
+
+static const struct attribute_group *kbd_led_groups[] = {
+ &kbd_led_group,
+ &kbd_led_als_group,
+ NULL,
+};
+
+static enum led_brightness kbd_led_level_get(struct led_classdev *led_cdev)
+{
+ int ret;
+ u16 num;
+ struct kbd_state state;
+
+ if (kbd_get_max_level()) {
+ ret = kbd_get_state(&state);
+ if (ret)
+ return 0;
+ ret = kbd_get_level(&state);
+ if (ret < 0)
+ return 0;
+ return ret;
+ }
+
+ if (kbd_get_valid_token_counts()) {
+ ret = kbd_get_first_active_token_bit();
+ if (ret < 0)
+ return 0;
+ for (num = kbd_token_bits; num != 0 && ret > 0; --ret)
+ num &= num - 1; /* clear the first bit set */
+ if (num == 0)
+ return 0;
+ return ffs(num) - 1;
+ }
+
+ pr_warn("Keyboard brightness level control not supported\n");
+ return 0;
+}
+
+static void kbd_led_level_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct kbd_state state;
+ struct kbd_state new_state;
+ u16 num;
+
+ if (kbd_get_max_level()) {
+ if (kbd_get_state(&state))
+ return;
+ new_state = state;
+ if (kbd_set_level(&new_state, value))
+ return;
+ kbd_set_state_safe(&new_state, &state);
+ return;
+ }
+
+ if (kbd_get_valid_token_counts()) {
+ for (num = kbd_token_bits; num != 0 && value > 0; --value)
+ num &= num - 1; /* clear the first bit set */
+ if (num == 0)
+ return;
+ kbd_set_token_bit(ffs(num) - 1);
+ return;
+ }
+
+ pr_warn("Keyboard brightness level control not supported\n");
+}
+
+static struct led_classdev kbd_led = {
+ .name = "dell::kbd_backlight",
+ .brightness_set = kbd_led_level_set,
+ .brightness_get = kbd_led_level_get,
+ .groups = kbd_led_groups,
+};
+
+static int __init kbd_led_init(struct device *dev)
+{
+ kbd_init();
+ if (!kbd_led_present)
+ return -ENODEV;
+ if (!kbd_als_supported)
+ kbd_led_groups[1] = NULL;
+ kbd_led.max_brightness = kbd_get_max_level();
+ if (!kbd_led.max_brightness) {
+ kbd_led.max_brightness = kbd_get_valid_token_counts();
+ if (kbd_led.max_brightness)
+ kbd_led.max_brightness--;
+ }
+ return led_classdev_register(dev, &kbd_led);
+}
+
+static void brightness_set_exit(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ /* Don't change backlight level on exit */
+};
+
+static void kbd_led_exit(void)
+{
+ if (!kbd_led_present)
+ return;
+ kbd_led.brightness_set = brightness_set_exit;
+ led_classdev_unregister(&kbd_led);
+}
+
+static int __init dell_init(void)
+{
+ int max_intensity = 0;
+ int ret;
+
+ if (!dmi_check_system(dell_device_table))
+ return -ENODEV;
+
+ quirks = NULL;
+ /* find if this machine support other functions */
+ dmi_check_system(dell_quirks);
+
+ dmi_walk(find_tokens, NULL);
+
+ if (!da_tokens) {
+ pr_info("Unable to find dmi tokens\n");
+ return -ENODEV;
+ }
+
+ ret = platform_driver_register(&platform_driver);
+ if (ret)
+ goto fail_platform_driver;
+ platform_device = platform_device_alloc("dell-laptop", -1);
+ if (!platform_device) {
+ ret = -ENOMEM;
+ goto fail_platform_device1;
+ }
+ ret = platform_device_add(platform_device);
+ if (ret)
+ goto fail_platform_device2;
+
+ /*
+ * Allocate buffer below 4GB for SMI data--only 32-bit physical addr
+ * is passed to SMI handler.
+ */
+ buffer = (void *)__get_free_page(GFP_KERNEL | GFP_DMA32);
+ if (!buffer) {
+ ret = -ENOMEM;
+ goto fail_buffer;
+ }
+
+ ret = dell_setup_rfkill();
+
+ if (ret) {
+ pr_warn("Unable to setup rfkill\n");
+ goto fail_rfkill;
+ }
+
+ if (quirks && quirks->touchpad_led)
+ touchpad_led_init(&platform_device->dev);
+
+ kbd_led_init(&platform_device->dev);
+
+ dell_laptop_dir = debugfs_create_dir("dell_laptop", NULL);
+ if (dell_laptop_dir != NULL)
+ debugfs_create_file("rfkill", 0444, dell_laptop_dir, NULL,
+ &dell_debugfs_fops);
+
+#ifdef CONFIG_ACPI
+ /* In the event of an ACPI backlight being available, don't
+ * register the platform controller.
+ */
+ if (acpi_video_backlight_support())
+ return 0;
+#endif
+
+ get_buffer();
+ buffer->input[0] = find_token_location(BRIGHTNESS_TOKEN);
+ if (buffer->input[0] != -1) {
+ dell_send_request(buffer, 0, 2);
+ max_intensity = buffer->output[3];
+ }
+ release_buffer();
+
+ if (max_intensity) {
+ struct backlight_properties props;
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = max_intensity;
+ dell_backlight_device = backlight_device_register("dell_backlight",
+ &platform_device->dev,
+ NULL,
+ &dell_ops,
+ &props);
+
+ if (IS_ERR(dell_backlight_device)) {
+ ret = PTR_ERR(dell_backlight_device);
+ dell_backlight_device = NULL;
+ goto fail_backlight;
+ }
+
+ dell_backlight_device->props.brightness =
+ dell_get_intensity(dell_backlight_device);
+ backlight_update_status(dell_backlight_device);
+ }
+
+ return 0;
+
+fail_backlight:
+ i8042_remove_filter(dell_laptop_i8042_filter);
+ cancel_delayed_work_sync(&dell_rfkill_work);
+ dell_cleanup_rfkill();
+fail_rfkill:
+ free_page((unsigned long)buffer);
+fail_buffer:
+ platform_device_del(platform_device);
+fail_platform_device2:
+ platform_device_put(platform_device);
+fail_platform_device1:
+ platform_driver_unregister(&platform_driver);
+fail_platform_driver:
+ kfree(da_tokens);
+ return ret;
+}
+
+static void __exit dell_exit(void)
+{
+ debugfs_remove_recursive(dell_laptop_dir);
+ if (quirks && quirks->touchpad_led)
+ touchpad_led_exit();
+ kbd_led_exit();
+ i8042_remove_filter(dell_laptop_i8042_filter);
+ cancel_delayed_work_sync(&dell_rfkill_work);
+ backlight_device_unregister(dell_backlight_device);
+ dell_cleanup_rfkill();
+ if (platform_device) {
+ platform_device_unregister(platform_device);
+ platform_driver_unregister(&platform_driver);
+ }
+ kfree(da_tokens);
+ free_page((unsigned long)buffer);
+}
+
+module_init(dell_init);
+module_exit(dell_exit);
+
+MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
+MODULE_AUTHOR("Gabriele Mazzotta <gabriele.mzt@gmail.com>");
+MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
+MODULE_DESCRIPTION("Dell laptop driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/dell-smo8800.c b/drivers/platform/x86/dell-smo8800.c
new file mode 100644
index 000000000..0aec4fd4c
--- /dev/null
+++ b/drivers/platform/x86/dell-smo8800.c
@@ -0,0 +1,239 @@
+/*
+ * dell-smo8800.c - Dell Latitude ACPI SMO88XX freefall sensor driver
+ *
+ * Copyright (C) 2012 Sonal Santan <sonal.santan@gmail.com>
+ * Copyright (C) 2014 Pali Rohár <pali.rohar@gmail.com>
+ *
+ * This is loosely based on lis3lv02d driver.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#define DRIVER_NAME "smo8800"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/interrupt.h>
+#include <linux/miscdevice.h>
+
+struct smo8800_device {
+ u32 irq; /* acpi device irq */
+ atomic_t counter; /* count after last read */
+ struct miscdevice miscdev; /* for /dev/freefall */
+ unsigned long misc_opened; /* whether the device is open */
+ wait_queue_head_t misc_wait; /* Wait queue for the misc dev */
+ struct device *dev; /* acpi device */
+};
+
+static irqreturn_t smo8800_interrupt_quick(int irq, void *data)
+{
+ struct smo8800_device *smo8800 = data;
+
+ atomic_inc(&smo8800->counter);
+ wake_up_interruptible(&smo8800->misc_wait);
+ return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t smo8800_interrupt_thread(int irq, void *data)
+{
+ struct smo8800_device *smo8800 = data;
+
+ dev_info(smo8800->dev, "detected free fall\n");
+ return IRQ_HANDLED;
+}
+
+static acpi_status smo8800_get_resource(struct acpi_resource *resource,
+ void *context)
+{
+ struct acpi_resource_extended_irq *irq;
+
+ if (resource->type != ACPI_RESOURCE_TYPE_EXTENDED_IRQ)
+ return AE_OK;
+
+ irq = &resource->data.extended_irq;
+ if (!irq || !irq->interrupt_count)
+ return AE_OK;
+
+ *((u32 *)context) = irq->interrupts[0];
+ return AE_CTRL_TERMINATE;
+}
+
+static u32 smo8800_get_irq(struct acpi_device *device)
+{
+ u32 irq = 0;
+ acpi_status status;
+
+ status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
+ smo8800_get_resource, &irq);
+ if (ACPI_FAILURE(status)) {
+ dev_err(&device->dev, "acpi_walk_resources failed\n");
+ return 0;
+ }
+
+ return irq;
+}
+
+static ssize_t smo8800_misc_read(struct file *file, char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct smo8800_device *smo8800 = container_of(file->private_data,
+ struct smo8800_device, miscdev);
+
+ u32 data = 0;
+ unsigned char byte_data = 0;
+ ssize_t retval = 1;
+
+ if (count < 1)
+ return -EINVAL;
+
+ atomic_set(&smo8800->counter, 0);
+ retval = wait_event_interruptible(smo8800->misc_wait,
+ (data = atomic_xchg(&smo8800->counter, 0)));
+
+ if (retval)
+ return retval;
+
+ byte_data = 1;
+ retval = 1;
+
+ if (data < 255)
+ byte_data = data;
+ else
+ byte_data = 255;
+
+ if (put_user(byte_data, buf))
+ retval = -EFAULT;
+
+ return retval;
+}
+
+static int smo8800_misc_open(struct inode *inode, struct file *file)
+{
+ struct smo8800_device *smo8800 = container_of(file->private_data,
+ struct smo8800_device, miscdev);
+
+ if (test_and_set_bit(0, &smo8800->misc_opened))
+ return -EBUSY; /* already open */
+
+ atomic_set(&smo8800->counter, 0);
+ return 0;
+}
+
+static int smo8800_misc_release(struct inode *inode, struct file *file)
+{
+ struct smo8800_device *smo8800 = container_of(file->private_data,
+ struct smo8800_device, miscdev);
+
+ clear_bit(0, &smo8800->misc_opened); /* release the device */
+ return 0;
+}
+
+static const struct file_operations smo8800_misc_fops = {
+ .owner = THIS_MODULE,
+ .read = smo8800_misc_read,
+ .open = smo8800_misc_open,
+ .release = smo8800_misc_release,
+};
+
+static int smo8800_add(struct acpi_device *device)
+{
+ int err;
+ struct smo8800_device *smo8800;
+
+ smo8800 = devm_kzalloc(&device->dev, sizeof(*smo8800), GFP_KERNEL);
+ if (!smo8800) {
+ dev_err(&device->dev, "failed to allocate device data\n");
+ return -ENOMEM;
+ }
+
+ smo8800->dev = &device->dev;
+ smo8800->miscdev.minor = MISC_DYNAMIC_MINOR;
+ smo8800->miscdev.name = "freefall";
+ smo8800->miscdev.fops = &smo8800_misc_fops;
+
+ init_waitqueue_head(&smo8800->misc_wait);
+
+ err = misc_register(&smo8800->miscdev);
+ if (err) {
+ dev_err(&device->dev, "failed to register misc dev: %d\n", err);
+ return err;
+ }
+
+ device->driver_data = smo8800;
+
+ smo8800->irq = smo8800_get_irq(device);
+ if (!smo8800->irq) {
+ dev_err(&device->dev, "failed to obtain IRQ\n");
+ err = -EINVAL;
+ goto error;
+ }
+
+ err = request_threaded_irq(smo8800->irq, smo8800_interrupt_quick,
+ smo8800_interrupt_thread,
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ DRIVER_NAME, smo8800);
+ if (err) {
+ dev_err(&device->dev,
+ "failed to request thread for IRQ %d: %d\n",
+ smo8800->irq, err);
+ goto error;
+ }
+
+ dev_dbg(&device->dev, "device /dev/freefall registered with IRQ %d\n",
+ smo8800->irq);
+ return 0;
+
+error:
+ misc_deregister(&smo8800->miscdev);
+ return err;
+}
+
+static int smo8800_remove(struct acpi_device *device)
+{
+ struct smo8800_device *smo8800 = device->driver_data;
+
+ free_irq(smo8800->irq, smo8800);
+ misc_deregister(&smo8800->miscdev);
+ dev_dbg(&device->dev, "device /dev/freefall unregistered\n");
+ return 0;
+}
+
+static const struct acpi_device_id smo8800_ids[] = {
+ { "SMO8800", 0 },
+ { "SMO8801", 0 },
+ { "SMO8810", 0 },
+ { "SMO8811", 0 },
+ { "SMO8820", 0 },
+ { "SMO8821", 0 },
+ { "SMO8830", 0 },
+ { "SMO8831", 0 },
+ { "", 0 },
+};
+
+MODULE_DEVICE_TABLE(acpi, smo8800_ids);
+
+static struct acpi_driver smo8800_driver = {
+ .name = DRIVER_NAME,
+ .class = "Latitude",
+ .ids = smo8800_ids,
+ .ops = {
+ .add = smo8800_add,
+ .remove = smo8800_remove,
+ },
+ .owner = THIS_MODULE,
+};
+
+module_acpi_driver(smo8800_driver);
+
+MODULE_DESCRIPTION("Dell Latitude freefall driver (ACPI SMO88XX)");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Sonal Santan, Pali Rohár");
diff --git a/drivers/platform/x86/dell-wmi-aio.c b/drivers/platform/x86/dell-wmi-aio.c
new file mode 100644
index 000000000..dbc97a33b
--- /dev/null
+++ b/drivers/platform/x86/dell-wmi-aio.c
@@ -0,0 +1,214 @@
+/*
+ * WMI hotkeys support for Dell All-In-One series
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/acpi.h>
+#include <linux/string.h>
+
+MODULE_DESCRIPTION("WMI hotkeys driver for Dell All-In-One series");
+MODULE_LICENSE("GPL");
+
+#define EVENT_GUID1 "284A0E6B-380E-472A-921F-E52786257FB4"
+#define EVENT_GUID2 "02314822-307C-4F66-BF0E-48AEAEB26CC8"
+
+struct dell_wmi_event {
+ u16 length;
+ /* 0x000: A hot key pressed or an event occurred
+ * 0x00F: A sequence of hot keys are pressed */
+ u16 type;
+ u16 event[];
+};
+
+static const char *dell_wmi_aio_guids[] = {
+ EVENT_GUID1,
+ EVENT_GUID2,
+ NULL
+};
+
+MODULE_ALIAS("wmi:"EVENT_GUID1);
+MODULE_ALIAS("wmi:"EVENT_GUID2);
+
+static const struct key_entry dell_wmi_aio_keymap[] = {
+ { KE_KEY, 0xc0, { KEY_VOLUMEUP } },
+ { KE_KEY, 0xc1, { KEY_VOLUMEDOWN } },
+ { KE_KEY, 0xe030, { KEY_VOLUMEUP } },
+ { KE_KEY, 0xe02e, { KEY_VOLUMEDOWN } },
+ { KE_KEY, 0xe020, { KEY_MUTE } },
+ { KE_KEY, 0xe027, { KEY_DISPLAYTOGGLE } },
+ { KE_KEY, 0xe006, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, 0xe005, { KEY_BRIGHTNESSDOWN } },
+ { KE_KEY, 0xe00b, { KEY_SWITCHVIDEOMODE } },
+ { KE_END, 0 }
+};
+
+static struct input_dev *dell_wmi_aio_input_dev;
+
+/*
+ * The new WMI event data format will follow the dell_wmi_event structure
+ * So, we will check if the buffer matches the format
+ */
+static bool dell_wmi_aio_event_check(u8 *buffer, int length)
+{
+ struct dell_wmi_event *event = (struct dell_wmi_event *)buffer;
+
+ if (event == NULL || length < 6)
+ return false;
+
+ if ((event->type == 0 || event->type == 0xf) &&
+ event->length >= 2)
+ return true;
+
+ return false;
+}
+
+static void dell_wmi_aio_notify(u32 value, void *context)
+{
+ struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ struct dell_wmi_event *event;
+ acpi_status status;
+
+ status = wmi_get_event_data(value, &response);
+ if (status != AE_OK) {
+ pr_info("bad event status 0x%x\n", status);
+ return;
+ }
+
+ obj = (union acpi_object *)response.pointer;
+ if (obj) {
+ unsigned int scancode = 0;
+
+ switch (obj->type) {
+ case ACPI_TYPE_INTEGER:
+ /* Most All-In-One correctly return integer scancode */
+ scancode = obj->integer.value;
+ sparse_keymap_report_event(dell_wmi_aio_input_dev,
+ scancode, 1, true);
+ break;
+ case ACPI_TYPE_BUFFER:
+ if (dell_wmi_aio_event_check(obj->buffer.pointer,
+ obj->buffer.length)) {
+ event = (struct dell_wmi_event *)
+ obj->buffer.pointer;
+ scancode = event->event[0];
+ } else {
+ /* Broken machines return the scancode in a
+ buffer */
+ if (obj->buffer.pointer &&
+ obj->buffer.length > 0)
+ scancode = obj->buffer.pointer[0];
+ }
+ if (scancode)
+ sparse_keymap_report_event(
+ dell_wmi_aio_input_dev,
+ scancode, 1, true);
+ break;
+ }
+ }
+ kfree(obj);
+}
+
+static int __init dell_wmi_aio_input_setup(void)
+{
+ int err;
+
+ dell_wmi_aio_input_dev = input_allocate_device();
+
+ if (!dell_wmi_aio_input_dev)
+ return -ENOMEM;
+
+ dell_wmi_aio_input_dev->name = "Dell AIO WMI hotkeys";
+ dell_wmi_aio_input_dev->phys = "wmi/input0";
+ dell_wmi_aio_input_dev->id.bustype = BUS_HOST;
+
+ err = sparse_keymap_setup(dell_wmi_aio_input_dev,
+ dell_wmi_aio_keymap, NULL);
+ if (err) {
+ pr_err("Unable to setup input device keymap\n");
+ goto err_free_dev;
+ }
+ err = input_register_device(dell_wmi_aio_input_dev);
+ if (err) {
+ pr_info("Unable to register input device\n");
+ goto err_free_keymap;
+ }
+ return 0;
+
+err_free_keymap:
+ sparse_keymap_free(dell_wmi_aio_input_dev);
+err_free_dev:
+ input_free_device(dell_wmi_aio_input_dev);
+ return err;
+}
+
+static const char *dell_wmi_aio_find(void)
+{
+ int i;
+
+ for (i = 0; dell_wmi_aio_guids[i] != NULL; i++)
+ if (wmi_has_guid(dell_wmi_aio_guids[i]))
+ return dell_wmi_aio_guids[i];
+
+ return NULL;
+}
+
+static int __init dell_wmi_aio_init(void)
+{
+ int err;
+ const char *guid;
+
+ guid = dell_wmi_aio_find();
+ if (!guid) {
+ pr_warn("No known WMI GUID found\n");
+ return -ENXIO;
+ }
+
+ err = dell_wmi_aio_input_setup();
+ if (err)
+ return err;
+
+ err = wmi_install_notify_handler(guid, dell_wmi_aio_notify, NULL);
+ if (err) {
+ pr_err("Unable to register notify handler - %d\n", err);
+ sparse_keymap_free(dell_wmi_aio_input_dev);
+ input_unregister_device(dell_wmi_aio_input_dev);
+ return err;
+ }
+
+ return 0;
+}
+
+static void __exit dell_wmi_aio_exit(void)
+{
+ const char *guid;
+
+ guid = dell_wmi_aio_find();
+ wmi_remove_notify_handler(guid);
+ sparse_keymap_free(dell_wmi_aio_input_dev);
+ input_unregister_device(dell_wmi_aio_input_dev);
+}
+
+module_init(dell_wmi_aio_init);
+module_exit(dell_wmi_aio_exit);
diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
new file mode 100644
index 000000000..6512a06bc
--- /dev/null
+++ b/drivers/platform/x86/dell-wmi.c
@@ -0,0 +1,423 @@
+/*
+ * Dell WMI hotkeys
+ *
+ * Copyright (C) 2008 Red Hat <mjg@redhat.com>
+ *
+ * Portions based on wistron_btns.c:
+ * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
+ * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
+ * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/acpi.h>
+#include <linux/string.h>
+#include <linux/dmi.h>
+
+MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
+MODULE_DESCRIPTION("Dell laptop WMI hotkeys driver");
+MODULE_LICENSE("GPL");
+
+#define DELL_EVENT_GUID "9DBB5994-A997-11DA-B012-B622A1EF5492"
+
+static int acpi_video;
+
+MODULE_ALIAS("wmi:"DELL_EVENT_GUID);
+
+/*
+ * Certain keys are flagged as KE_IGNORE. All of these are either
+ * notifications (rather than requests for change) or are also sent
+ * via the keyboard controller so should not be sent again.
+ */
+
+static const struct key_entry dell_wmi_legacy_keymap[] __initconst = {
+ { KE_IGNORE, 0x003a, { KEY_CAPSLOCK } },
+
+ { KE_KEY, 0xe045, { KEY_PROG1 } },
+ { KE_KEY, 0xe009, { KEY_EJECTCD } },
+
+ /* These also contain the brightness level at offset 6 */
+ { KE_KEY, 0xe006, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, 0xe005, { KEY_BRIGHTNESSDOWN } },
+
+ /* Battery health status button */
+ { KE_KEY, 0xe007, { KEY_BATTERY } },
+
+ /* Radio devices state change */
+ { KE_IGNORE, 0xe008, { KEY_RFKILL } },
+
+ /* The next device is at offset 6, the active devices are at
+ offset 8 and the attached devices at offset 10 */
+ { KE_KEY, 0xe00b, { KEY_SWITCHVIDEOMODE } },
+
+ { KE_IGNORE, 0xe00c, { KEY_KBDILLUMTOGGLE } },
+
+ /* BIOS error detected */
+ { KE_IGNORE, 0xe00d, { KEY_RESERVED } },
+
+ /* Wifi Catcher */
+ { KE_KEY, 0xe011, {KEY_PROG2 } },
+
+ /* Ambient light sensor toggle */
+ { KE_IGNORE, 0xe013, { KEY_RESERVED } },
+
+ { KE_IGNORE, 0xe020, { KEY_MUTE } },
+
+ /* Shortcut and audio panel keys */
+ { KE_IGNORE, 0xe025, { KEY_RESERVED } },
+ { KE_IGNORE, 0xe026, { KEY_RESERVED } },
+
+ { KE_IGNORE, 0xe02e, { KEY_VOLUMEDOWN } },
+ { KE_IGNORE, 0xe030, { KEY_VOLUMEUP } },
+ { KE_IGNORE, 0xe033, { KEY_KBDILLUMUP } },
+ { KE_IGNORE, 0xe034, { KEY_KBDILLUMDOWN } },
+ { KE_IGNORE, 0xe03a, { KEY_CAPSLOCK } },
+ { KE_IGNORE, 0xe045, { KEY_NUMLOCK } },
+ { KE_IGNORE, 0xe046, { KEY_SCROLLLOCK } },
+ { KE_IGNORE, 0xe0f7, { KEY_MUTE } },
+ { KE_IGNORE, 0xe0f8, { KEY_VOLUMEDOWN } },
+ { KE_IGNORE, 0xe0f9, { KEY_VOLUMEUP } },
+ { KE_END, 0 }
+};
+
+static bool dell_new_hk_type;
+
+struct dell_bios_keymap_entry {
+ u16 scancode;
+ u16 keycode;
+};
+
+struct dell_bios_hotkey_table {
+ struct dmi_header header;
+ struct dell_bios_keymap_entry keymap[];
+
+};
+
+static const struct dell_bios_hotkey_table *dell_bios_hotkey_table;
+
+static const u16 bios_to_linux_keycode[256] __initconst = {
+
+ KEY_MEDIA, KEY_NEXTSONG, KEY_PLAYPAUSE, KEY_PREVIOUSSONG,
+ KEY_STOPCD, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+ KEY_WWW, KEY_UNKNOWN, KEY_VOLUMEDOWN, KEY_MUTE,
+ KEY_VOLUMEUP, KEY_UNKNOWN, KEY_BATTERY, KEY_EJECTCD,
+ KEY_UNKNOWN, KEY_SLEEP, KEY_PROG1, KEY_BRIGHTNESSDOWN,
+ KEY_BRIGHTNESSUP, KEY_UNKNOWN, KEY_KBDILLUMTOGGLE,
+ KEY_UNKNOWN, KEY_SWITCHVIDEOMODE, KEY_UNKNOWN, KEY_UNKNOWN,
+ KEY_SWITCHVIDEOMODE, KEY_UNKNOWN, KEY_UNKNOWN, KEY_PROG2,
+ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_MICMUTE,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_PROG3
+};
+
+static struct input_dev *dell_wmi_input_dev;
+
+static void dell_wmi_process_key(int reported_key)
+{
+ const struct key_entry *key;
+
+ key = sparse_keymap_entry_from_scancode(dell_wmi_input_dev,
+ reported_key);
+ if (!key) {
+ pr_info("Unknown key %x pressed\n", reported_key);
+ return;
+ }
+
+ pr_debug("Key %x pressed\n", reported_key);
+
+ /* Don't report brightness notifications that will also come via ACPI */
+ if ((key->keycode == KEY_BRIGHTNESSUP ||
+ key->keycode == KEY_BRIGHTNESSDOWN) && acpi_video)
+ return;
+
+ sparse_keymap_report_entry(dell_wmi_input_dev, key, 1, true);
+}
+
+static void dell_wmi_notify(u32 value, void *context)
+{
+ struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ acpi_status status;
+ acpi_size buffer_size;
+ u16 *buffer_entry, *buffer_end;
+ int len, i;
+
+ status = wmi_get_event_data(value, &response);
+ if (status != AE_OK) {
+ pr_warn("bad event status 0x%x\n", status);
+ return;
+ }
+
+ obj = (union acpi_object *)response.pointer;
+ if (!obj) {
+ pr_warn("no response\n");
+ return;
+ }
+
+ if (obj->type != ACPI_TYPE_BUFFER) {
+ pr_warn("bad response type %x\n", obj->type);
+ kfree(obj);
+ return;
+ }
+
+ pr_debug("Received WMI event (%*ph)\n",
+ obj->buffer.length, obj->buffer.pointer);
+
+ buffer_entry = (u16 *)obj->buffer.pointer;
+ buffer_size = obj->buffer.length/2;
+
+ if (!dell_new_hk_type) {
+ if (buffer_size >= 3 && buffer_entry[1] == 0x0)
+ dell_wmi_process_key(buffer_entry[2]);
+ else if (buffer_size >= 2)
+ dell_wmi_process_key(buffer_entry[1]);
+ else
+ pr_info("Received unknown WMI event\n");
+ kfree(obj);
+ return;
+ }
+
+ buffer_end = buffer_entry + buffer_size;
+
+ while (buffer_entry < buffer_end) {
+
+ len = buffer_entry[0];
+ if (len == 0)
+ break;
+
+ len++;
+
+ if (buffer_entry + len > buffer_end) {
+ pr_warn("Invalid length of WMI event\n");
+ break;
+ }
+
+ pr_debug("Process buffer (%*ph)\n", len*2, buffer_entry);
+
+ switch (buffer_entry[1]) {
+ case 0x00:
+ for (i = 2; i < len; ++i) {
+ switch (buffer_entry[i]) {
+ case 0xe043:
+ /* NIC Link is Up */
+ pr_debug("NIC Link is Up\n");
+ break;
+ case 0xe044:
+ /* NIC Link is Down */
+ pr_debug("NIC Link is Down\n");
+ break;
+ case 0xe045:
+ /* Unknown event but defined in DSDT */
+ default:
+ /* Unknown event */
+ pr_info("Unknown WMI event type 0x00: "
+ "0x%x\n", (int)buffer_entry[i]);
+ break;
+ }
+ }
+ break;
+ case 0x10:
+ /* Keys pressed */
+ for (i = 2; i < len; ++i)
+ dell_wmi_process_key(buffer_entry[i]);
+ break;
+ case 0x11:
+ for (i = 2; i < len; ++i) {
+ switch (buffer_entry[i]) {
+ case 0xfff0:
+ /* Battery unplugged */
+ pr_debug("Battery unplugged\n");
+ break;
+ case 0xfff1:
+ /* Battery inserted */
+ pr_debug("Battery inserted\n");
+ break;
+ case 0x01e1:
+ case 0x02ea:
+ case 0x02eb:
+ case 0x02ec:
+ case 0x02f6:
+ /* Keyboard backlight level changed */
+ pr_debug("Keyboard backlight level "
+ "changed\n");
+ break;
+ default:
+ /* Unknown event */
+ pr_info("Unknown WMI event type 0x11: "
+ "0x%x\n", (int)buffer_entry[i]);
+ break;
+ }
+ }
+ break;
+ default:
+ /* Unknown event */
+ pr_info("Unknown WMI event type 0x%x\n",
+ (int)buffer_entry[1]);
+ break;
+ }
+
+ buffer_entry += len;
+
+ }
+
+ kfree(obj);
+}
+
+static const struct key_entry * __init dell_wmi_prepare_new_keymap(void)
+{
+ int hotkey_num = (dell_bios_hotkey_table->header.length - 4) /
+ sizeof(struct dell_bios_keymap_entry);
+ struct key_entry *keymap;
+ int i;
+
+ keymap = kcalloc(hotkey_num + 1, sizeof(struct key_entry), GFP_KERNEL);
+ if (!keymap)
+ return NULL;
+
+ for (i = 0; i < hotkey_num; i++) {
+ const struct dell_bios_keymap_entry *bios_entry =
+ &dell_bios_hotkey_table->keymap[i];
+ u16 keycode = bios_entry->keycode < 256 ?
+ bios_to_linux_keycode[bios_entry->keycode] :
+ KEY_RESERVED;
+
+ if (keycode == KEY_KBDILLUMTOGGLE)
+ keymap[i].type = KE_IGNORE;
+ else
+ keymap[i].type = KE_KEY;
+ keymap[i].code = bios_entry->scancode;
+ keymap[i].keycode = keycode;
+ }
+
+ keymap[hotkey_num].type = KE_END;
+
+ return keymap;
+}
+
+static int __init dell_wmi_input_setup(void)
+{
+ int err;
+
+ dell_wmi_input_dev = input_allocate_device();
+ if (!dell_wmi_input_dev)
+ return -ENOMEM;
+
+ dell_wmi_input_dev->name = "Dell WMI hotkeys";
+ dell_wmi_input_dev->phys = "wmi/input0";
+ dell_wmi_input_dev->id.bustype = BUS_HOST;
+
+ if (dell_new_hk_type) {
+ const struct key_entry *keymap = dell_wmi_prepare_new_keymap();
+ if (!keymap) {
+ err = -ENOMEM;
+ goto err_free_dev;
+ }
+
+ err = sparse_keymap_setup(dell_wmi_input_dev, keymap, NULL);
+
+ /*
+ * Sparse keymap library makes a copy of keymap so we
+ * don't need the original one that was allocated.
+ */
+ kfree(keymap);
+ } else {
+ err = sparse_keymap_setup(dell_wmi_input_dev,
+ dell_wmi_legacy_keymap, NULL);
+ }
+ if (err)
+ goto err_free_dev;
+
+ err = input_register_device(dell_wmi_input_dev);
+ if (err)
+ goto err_free_keymap;
+
+ return 0;
+
+ err_free_keymap:
+ sparse_keymap_free(dell_wmi_input_dev);
+ err_free_dev:
+ input_free_device(dell_wmi_input_dev);
+ return err;
+}
+
+static void dell_wmi_input_destroy(void)
+{
+ sparse_keymap_free(dell_wmi_input_dev);
+ input_unregister_device(dell_wmi_input_dev);
+}
+
+static void __init find_hk_type(const struct dmi_header *dm, void *dummy)
+{
+ if (dm->type == 0xb2 && dm->length > 6) {
+ dell_new_hk_type = true;
+ dell_bios_hotkey_table =
+ container_of(dm, struct dell_bios_hotkey_table, header);
+ }
+}
+
+static int __init dell_wmi_init(void)
+{
+ int err;
+ acpi_status status;
+
+ if (!wmi_has_guid(DELL_EVENT_GUID)) {
+ pr_warn("No known WMI GUID found\n");
+ return -ENODEV;
+ }
+
+ dmi_walk(find_hk_type, NULL);
+ acpi_video = acpi_video_backlight_support();
+
+ err = dell_wmi_input_setup();
+ if (err)
+ return err;
+
+ status = wmi_install_notify_handler(DELL_EVENT_GUID,
+ dell_wmi_notify, NULL);
+ if (ACPI_FAILURE(status)) {
+ dell_wmi_input_destroy();
+ pr_err("Unable to register notify handler - %d\n", status);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+module_init(dell_wmi_init);
+
+static void __exit dell_wmi_exit(void)
+{
+ wmi_remove_notify_handler(DELL_EVENT_GUID);
+ dell_wmi_input_destroy();
+}
+module_exit(dell_wmi_exit);
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
new file mode 100644
index 000000000..844c2096b
--- /dev/null
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -0,0 +1,1546 @@
+/*
+ * eeepc-laptop.c - Asus Eee PC extras
+ *
+ * Based on asus_acpi.c as patched for the Eee PC by Asus:
+ * ftp://ftp.asus.com/pub/ASUS/EeePC/701/ASUS_ACPI_071126.rar
+ * Based on eee.c from eeepc-linux
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/platform_device.h>
+#include <linux/backlight.h>
+#include <linux/fb.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/slab.h>
+#include <linux/acpi.h>
+#include <linux/uaccess.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/rfkill.h>
+#include <linux/pci.h>
+#include <linux/pci_hotplug.h>
+#include <linux/leds.h>
+#include <linux/dmi.h>
+
+#define EEEPC_LAPTOP_VERSION "0.1"
+#define EEEPC_LAPTOP_NAME "Eee PC Hotkey Driver"
+#define EEEPC_LAPTOP_FILE "eeepc"
+
+#define EEEPC_ACPI_CLASS "hotkey"
+#define EEEPC_ACPI_DEVICE_NAME "Hotkey"
+#define EEEPC_ACPI_HID "ASUS010"
+
+MODULE_AUTHOR("Corentin Chary, Eric Cooper");
+MODULE_DESCRIPTION(EEEPC_LAPTOP_NAME);
+MODULE_LICENSE("GPL");
+
+static bool hotplug_disabled;
+
+module_param(hotplug_disabled, bool, 0444);
+MODULE_PARM_DESC(hotplug_disabled,
+ "Disable hotplug for wireless device. "
+ "If your laptop need that, please report to "
+ "acpi4asus-user@lists.sourceforge.net.");
+
+/*
+ * Definitions for Asus EeePC
+ */
+#define NOTIFY_BRN_MIN 0x20
+#define NOTIFY_BRN_MAX 0x2f
+
+enum {
+ DISABLE_ASL_WLAN = 0x0001,
+ DISABLE_ASL_BLUETOOTH = 0x0002,
+ DISABLE_ASL_IRDA = 0x0004,
+ DISABLE_ASL_CAMERA = 0x0008,
+ DISABLE_ASL_TV = 0x0010,
+ DISABLE_ASL_GPS = 0x0020,
+ DISABLE_ASL_DISPLAYSWITCH = 0x0040,
+ DISABLE_ASL_MODEM = 0x0080,
+ DISABLE_ASL_CARDREADER = 0x0100,
+ DISABLE_ASL_3G = 0x0200,
+ DISABLE_ASL_WIMAX = 0x0400,
+ DISABLE_ASL_HWCF = 0x0800
+};
+
+enum {
+ CM_ASL_WLAN = 0,
+ CM_ASL_BLUETOOTH,
+ CM_ASL_IRDA,
+ CM_ASL_1394,
+ CM_ASL_CAMERA,
+ CM_ASL_TV,
+ CM_ASL_GPS,
+ CM_ASL_DVDROM,
+ CM_ASL_DISPLAYSWITCH,
+ CM_ASL_PANELBRIGHT,
+ CM_ASL_BIOSFLASH,
+ CM_ASL_ACPIFLASH,
+ CM_ASL_CPUFV,
+ CM_ASL_CPUTEMPERATURE,
+ CM_ASL_FANCPU,
+ CM_ASL_FANCHASSIS,
+ CM_ASL_USBPORT1,
+ CM_ASL_USBPORT2,
+ CM_ASL_USBPORT3,
+ CM_ASL_MODEM,
+ CM_ASL_CARDREADER,
+ CM_ASL_3G,
+ CM_ASL_WIMAX,
+ CM_ASL_HWCF,
+ CM_ASL_LID,
+ CM_ASL_TYPE,
+ CM_ASL_PANELPOWER, /*P901*/
+ CM_ASL_TPD
+};
+
+static const char *cm_getv[] = {
+ "WLDG", "BTHG", NULL, NULL,
+ "CAMG", NULL, NULL, NULL,
+ NULL, "PBLG", NULL, NULL,
+ "CFVG", NULL, NULL, NULL,
+ "USBG", NULL, NULL, "MODG",
+ "CRDG", "M3GG", "WIMG", "HWCF",
+ "LIDG", "TYPE", "PBPG", "TPDG"
+};
+
+static const char *cm_setv[] = {
+ "WLDS", "BTHS", NULL, NULL,
+ "CAMS", NULL, NULL, NULL,
+ "SDSP", "PBLS", "HDPS", NULL,
+ "CFVS", NULL, NULL, NULL,
+ "USBG", NULL, NULL, "MODS",
+ "CRDS", "M3GS", "WIMS", NULL,
+ NULL, NULL, "PBPS", "TPDS"
+};
+
+static const struct key_entry eeepc_keymap[] = {
+ { KE_KEY, 0x10, { KEY_WLAN } },
+ { KE_KEY, 0x11, { KEY_WLAN } },
+ { KE_KEY, 0x12, { KEY_PROG1 } },
+ { KE_KEY, 0x13, { KEY_MUTE } },
+ { KE_KEY, 0x14, { KEY_VOLUMEDOWN } },
+ { KE_KEY, 0x15, { KEY_VOLUMEUP } },
+ { KE_KEY, 0x16, { KEY_DISPLAY_OFF } },
+ { KE_KEY, 0x1a, { KEY_COFFEE } },
+ { KE_KEY, 0x1b, { KEY_ZOOM } },
+ { KE_KEY, 0x1c, { KEY_PROG2 } },
+ { KE_KEY, 0x1d, { KEY_PROG3 } },
+ { KE_KEY, NOTIFY_BRN_MIN, { KEY_BRIGHTNESSDOWN } },
+ { KE_KEY, NOTIFY_BRN_MAX, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, 0x30, { KEY_SWITCHVIDEOMODE } },
+ { KE_KEY, 0x31, { KEY_SWITCHVIDEOMODE } },
+ { KE_KEY, 0x32, { KEY_SWITCHVIDEOMODE } },
+ { KE_KEY, 0x37, { KEY_F13 } }, /* Disable Touchpad */
+ { KE_KEY, 0x38, { KEY_F14 } },
+ { KE_END, 0 },
+};
+
+/*
+ * This is the main structure, we can use it to store useful information
+ */
+struct eeepc_laptop {
+ acpi_handle handle; /* the handle of the acpi device */
+ u32 cm_supported; /* the control methods supported
+ by this BIOS */
+ bool cpufv_disabled;
+ bool hotplug_disabled;
+ u16 event_count[128]; /* count for each event */
+
+ struct platform_device *platform_device;
+ struct acpi_device *device; /* the device we are in */
+ struct backlight_device *backlight_device;
+
+ struct input_dev *inputdev;
+
+ struct rfkill *wlan_rfkill;
+ struct rfkill *bluetooth_rfkill;
+ struct rfkill *wwan3g_rfkill;
+ struct rfkill *wimax_rfkill;
+
+ struct hotplug_slot *hotplug_slot;
+ struct mutex hotplug_lock;
+
+ struct led_classdev tpd_led;
+ int tpd_led_wk;
+ struct workqueue_struct *led_workqueue;
+ struct work_struct tpd_led_work;
+};
+
+/*
+ * ACPI Helpers
+ */
+static int write_acpi_int(acpi_handle handle, const char *method, int val)
+{
+ acpi_status status;
+
+ status = acpi_execute_simple_method(handle, (char *)method, val);
+
+ return (status == AE_OK ? 0 : -1);
+}
+
+static int read_acpi_int(acpi_handle handle, const char *method, int *val)
+{
+ acpi_status status;
+ unsigned long long result;
+
+ status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
+ if (ACPI_FAILURE(status)) {
+ *val = -1;
+ return -1;
+ } else {
+ *val = result;
+ return 0;
+ }
+}
+
+static int set_acpi(struct eeepc_laptop *eeepc, int cm, int value)
+{
+ const char *method = cm_setv[cm];
+
+ if (method == NULL)
+ return -ENODEV;
+ if ((eeepc->cm_supported & (0x1 << cm)) == 0)
+ return -ENODEV;
+
+ if (write_acpi_int(eeepc->handle, method, value))
+ pr_warn("Error writing %s\n", method);
+ return 0;
+}
+
+static int get_acpi(struct eeepc_laptop *eeepc, int cm)
+{
+ const char *method = cm_getv[cm];
+ int value;
+
+ if (method == NULL)
+ return -ENODEV;
+ if ((eeepc->cm_supported & (0x1 << cm)) == 0)
+ return -ENODEV;
+
+ if (read_acpi_int(eeepc->handle, method, &value))
+ pr_warn("Error reading %s\n", method);
+ return value;
+}
+
+static int acpi_setter_handle(struct eeepc_laptop *eeepc, int cm,
+ acpi_handle *handle)
+{
+ const char *method = cm_setv[cm];
+ acpi_status status;
+
+ if (method == NULL)
+ return -ENODEV;
+ if ((eeepc->cm_supported & (0x1 << cm)) == 0)
+ return -ENODEV;
+
+ status = acpi_get_handle(eeepc->handle, (char *)method,
+ handle);
+ if (status != AE_OK) {
+ pr_warn("Error finding %s\n", method);
+ return -ENODEV;
+ }
+ return 0;
+}
+
+
+/*
+ * Sys helpers
+ */
+static int parse_arg(const char *buf, int *val)
+{
+ if (sscanf(buf, "%i", val) != 1)
+ return -EINVAL;
+ return 0;
+}
+
+static ssize_t store_sys_acpi(struct device *dev, int cm,
+ const char *buf, size_t count)
+{
+ struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
+ int rv, value;
+
+ rv = parse_arg(buf, &value);
+ if (rv < 0)
+ return rv;
+ rv = set_acpi(eeepc, cm, value);
+ if (rv < 0)
+ return -EIO;
+ return count;
+}
+
+static ssize_t show_sys_acpi(struct device *dev, int cm, char *buf)
+{
+ struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
+ int value = get_acpi(eeepc, cm);
+
+ if (value < 0)
+ return -EIO;
+ return sprintf(buf, "%d\n", value);
+}
+
+#define EEEPC_ACPI_SHOW_FUNC(_name, _cm) \
+ static ssize_t _name##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+ { \
+ return show_sys_acpi(dev, _cm, buf); \
+ }
+
+#define EEEPC_ACPI_STORE_FUNC(_name, _cm) \
+ static ssize_t _name##_store(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+ { \
+ return store_sys_acpi(dev, _cm, buf, count); \
+ }
+
+#define EEEPC_CREATE_DEVICE_ATTR_RW(_name, _cm) \
+ EEEPC_ACPI_SHOW_FUNC(_name, _cm) \
+ EEEPC_ACPI_STORE_FUNC(_name, _cm) \
+ static DEVICE_ATTR_RW(_name)
+
+#define EEEPC_CREATE_DEVICE_ATTR_WO(_name, _cm) \
+ EEEPC_ACPI_STORE_FUNC(_name, _cm) \
+ static DEVICE_ATTR_WO(_name)
+
+EEEPC_CREATE_DEVICE_ATTR_RW(camera, CM_ASL_CAMERA);
+EEEPC_CREATE_DEVICE_ATTR_RW(cardr, CM_ASL_CARDREADER);
+EEEPC_CREATE_DEVICE_ATTR_WO(disp, CM_ASL_DISPLAYSWITCH);
+
+struct eeepc_cpufv {
+ int num;
+ int cur;
+};
+
+static int get_cpufv(struct eeepc_laptop *eeepc, struct eeepc_cpufv *c)
+{
+ c->cur = get_acpi(eeepc, CM_ASL_CPUFV);
+ if (c->cur < 0)
+ return -ENODEV;
+
+ c->num = (c->cur >> 8) & 0xff;
+ c->cur &= 0xff;
+ if (c->num == 0 || c->num > 12)
+ return -ENODEV;
+ return 0;
+}
+
+static ssize_t available_cpufv_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
+ struct eeepc_cpufv c;
+ int i;
+ ssize_t len = 0;
+
+ if (get_cpufv(eeepc, &c))
+ return -ENODEV;
+ for (i = 0; i < c.num; i++)
+ len += sprintf(buf + len, "%d ", i);
+ len += sprintf(buf + len, "\n");
+ return len;
+}
+
+static ssize_t cpufv_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
+ struct eeepc_cpufv c;
+
+ if (get_cpufv(eeepc, &c))
+ return -ENODEV;
+ return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
+}
+
+static ssize_t cpufv_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
+ struct eeepc_cpufv c;
+ int rv, value;
+
+ if (eeepc->cpufv_disabled)
+ return -EPERM;
+ if (get_cpufv(eeepc, &c))
+ return -ENODEV;
+ rv = parse_arg(buf, &value);
+ if (rv < 0)
+ return rv;
+ if (value < 0 || value >= c.num)
+ return -EINVAL;
+ rv = set_acpi(eeepc, CM_ASL_CPUFV, value);
+ if (rv)
+ return rv;
+ return count;
+}
+
+static ssize_t cpufv_disabled_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d\n", eeepc->cpufv_disabled);
+}
+
+static ssize_t cpufv_disabled_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
+ int rv, value;
+
+ rv = parse_arg(buf, &value);
+ if (rv < 0)
+ return rv;
+
+ switch (value) {
+ case 0:
+ if (eeepc->cpufv_disabled)
+ pr_warn("cpufv enabled (not officially supported on this model)\n");
+ eeepc->cpufv_disabled = false;
+ return count;
+ case 1:
+ return -EPERM;
+ default:
+ return -EINVAL;
+ }
+}
+
+
+static DEVICE_ATTR_RW(cpufv);
+static DEVICE_ATTR_RO(available_cpufv);
+static DEVICE_ATTR_RW(cpufv_disabled);
+
+static struct attribute *platform_attributes[] = {
+ &dev_attr_camera.attr,
+ &dev_attr_cardr.attr,
+ &dev_attr_disp.attr,
+ &dev_attr_cpufv.attr,
+ &dev_attr_available_cpufv.attr,
+ &dev_attr_cpufv_disabled.attr,
+ NULL
+};
+
+static struct attribute_group platform_attribute_group = {
+ .attrs = platform_attributes
+};
+
+static int eeepc_platform_init(struct eeepc_laptop *eeepc)
+{
+ int result;
+
+ eeepc->platform_device = platform_device_alloc(EEEPC_LAPTOP_FILE, -1);
+ if (!eeepc->platform_device)
+ return -ENOMEM;
+ platform_set_drvdata(eeepc->platform_device, eeepc);
+
+ result = platform_device_add(eeepc->platform_device);
+ if (result)
+ goto fail_platform_device;
+
+ result = sysfs_create_group(&eeepc->platform_device->dev.kobj,
+ &platform_attribute_group);
+ if (result)
+ goto fail_sysfs;
+ return 0;
+
+fail_sysfs:
+ platform_device_del(eeepc->platform_device);
+fail_platform_device:
+ platform_device_put(eeepc->platform_device);
+ return result;
+}
+
+static void eeepc_platform_exit(struct eeepc_laptop *eeepc)
+{
+ sysfs_remove_group(&eeepc->platform_device->dev.kobj,
+ &platform_attribute_group);
+ platform_device_unregister(eeepc->platform_device);
+}
+
+/*
+ * LEDs
+ */
+/*
+ * These functions actually update the LED's, and are called from a
+ * workqueue. By doing this as separate work rather than when the LED
+ * subsystem asks, we avoid messing with the Asus ACPI stuff during a
+ * potentially bad time, such as a timer interrupt.
+ */
+static void tpd_led_update(struct work_struct *work)
+ {
+ struct eeepc_laptop *eeepc;
+
+ eeepc = container_of(work, struct eeepc_laptop, tpd_led_work);
+
+ set_acpi(eeepc, CM_ASL_TPD, eeepc->tpd_led_wk);
+}
+
+static void tpd_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct eeepc_laptop *eeepc;
+
+ eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
+
+ eeepc->tpd_led_wk = (value > 0) ? 1 : 0;
+ queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work);
+}
+
+static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
+{
+ struct eeepc_laptop *eeepc;
+
+ eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
+
+ return get_acpi(eeepc, CM_ASL_TPD);
+}
+
+static int eeepc_led_init(struct eeepc_laptop *eeepc)
+{
+ int rv;
+
+ if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV)
+ return 0;
+
+ eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue");
+ if (!eeepc->led_workqueue)
+ return -ENOMEM;
+ INIT_WORK(&eeepc->tpd_led_work, tpd_led_update);
+
+ eeepc->tpd_led.name = "eeepc::touchpad";
+ eeepc->tpd_led.brightness_set = tpd_led_set;
+ if (get_acpi(eeepc, CM_ASL_TPD) >= 0) /* if method is available */
+ eeepc->tpd_led.brightness_get = tpd_led_get;
+ eeepc->tpd_led.max_brightness = 1;
+
+ rv = led_classdev_register(&eeepc->platform_device->dev,
+ &eeepc->tpd_led);
+ if (rv) {
+ destroy_workqueue(eeepc->led_workqueue);
+ return rv;
+ }
+
+ return 0;
+}
+
+static void eeepc_led_exit(struct eeepc_laptop *eeepc)
+{
+ if (!IS_ERR_OR_NULL(eeepc->tpd_led.dev))
+ led_classdev_unregister(&eeepc->tpd_led);
+ if (eeepc->led_workqueue)
+ destroy_workqueue(eeepc->led_workqueue);
+}
+
+
+/*
+ * PCI hotplug (for wlan rfkill)
+ */
+static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc)
+{
+ if (get_acpi(eeepc, CM_ASL_WLAN) == 1)
+ return false;
+ return true;
+}
+
+static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc, acpi_handle handle)
+{
+ struct pci_dev *port;
+ struct pci_dev *dev;
+ struct pci_bus *bus;
+ bool blocked = eeepc_wlan_rfkill_blocked(eeepc);
+ bool absent;
+ u32 l;
+
+ if (eeepc->wlan_rfkill)
+ rfkill_set_sw_state(eeepc->wlan_rfkill, blocked);
+
+ mutex_lock(&eeepc->hotplug_lock);
+ pci_lock_rescan_remove();
+
+ if (!eeepc->hotplug_slot)
+ goto out_unlock;
+
+ port = acpi_get_pci_dev(handle);
+ if (!port) {
+ pr_warning("Unable to find port\n");
+ goto out_unlock;
+ }
+
+ bus = port->subordinate;
+
+ if (!bus) {
+ pr_warn("Unable to find PCI bus 1?\n");
+ goto out_put_dev;
+ }
+
+ if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
+ pr_err("Unable to read PCI config space?\n");
+ goto out_put_dev;
+ }
+
+ absent = (l == 0xffffffff);
+
+ if (blocked != absent) {
+ pr_warn("BIOS says wireless lan is %s, but the pci device is %s\n",
+ blocked ? "blocked" : "unblocked",
+ absent ? "absent" : "present");
+ pr_warn("skipped wireless hotplug as probably inappropriate for this model\n");
+ goto out_put_dev;
+ }
+
+ if (!blocked) {
+ dev = pci_get_slot(bus, 0);
+ if (dev) {
+ /* Device already present */
+ pci_dev_put(dev);
+ goto out_put_dev;
+ }
+ dev = pci_scan_single_device(bus, 0);
+ if (dev) {
+ pci_bus_assign_resources(bus);
+ pci_bus_add_device(dev);
+ }
+ } else {
+ dev = pci_get_slot(bus, 0);
+ if (dev) {
+ pci_stop_and_remove_bus_device(dev);
+ pci_dev_put(dev);
+ }
+ }
+out_put_dev:
+ pci_dev_put(port);
+
+out_unlock:
+ pci_unlock_rescan_remove();
+ mutex_unlock(&eeepc->hotplug_lock);
+}
+
+static void eeepc_rfkill_hotplug_update(struct eeepc_laptop *eeepc, char *node)
+{
+ acpi_status status = AE_OK;
+ acpi_handle handle;
+
+ status = acpi_get_handle(NULL, node, &handle);
+
+ if (ACPI_SUCCESS(status))
+ eeepc_rfkill_hotplug(eeepc, handle);
+}
+
+static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct eeepc_laptop *eeepc = data;
+
+ if (event != ACPI_NOTIFY_BUS_CHECK)
+ return;
+
+ eeepc_rfkill_hotplug(eeepc, handle);
+}
+
+static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc,
+ char *node)
+{
+ acpi_status status;
+ acpi_handle handle;
+
+ status = acpi_get_handle(NULL, node, &handle);
+
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ status = acpi_install_notify_handler(handle,
+ ACPI_SYSTEM_NOTIFY,
+ eeepc_rfkill_notify,
+ eeepc);
+ if (ACPI_FAILURE(status))
+ pr_warn("Failed to register notify on %s\n", node);
+
+ /*
+ * Refresh pci hotplug in case the rfkill state was
+ * changed during setup.
+ */
+ eeepc_rfkill_hotplug(eeepc, handle);
+ return 0;
+}
+
+static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc,
+ char *node)
+{
+ acpi_status status = AE_OK;
+ acpi_handle handle;
+
+ status = acpi_get_handle(NULL, node, &handle);
+
+ if (ACPI_FAILURE(status))
+ return;
+
+ status = acpi_remove_notify_handler(handle,
+ ACPI_SYSTEM_NOTIFY,
+ eeepc_rfkill_notify);
+ if (ACPI_FAILURE(status))
+ pr_err("Error removing rfkill notify handler %s\n",
+ node);
+ /*
+ * Refresh pci hotplug in case the rfkill
+ * state was changed after
+ * eeepc_unregister_rfkill_notifier()
+ */
+ eeepc_rfkill_hotplug(eeepc, handle);
+}
+
+static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
+ u8 *value)
+{
+ struct eeepc_laptop *eeepc = hotplug_slot->private;
+ int val = get_acpi(eeepc, CM_ASL_WLAN);
+
+ if (val == 1 || val == 0)
+ *value = val;
+ else
+ return -EINVAL;
+
+ return 0;
+}
+
+static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
+{
+ kfree(hotplug_slot->info);
+ kfree(hotplug_slot);
+}
+
+static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
+ .owner = THIS_MODULE,
+ .get_adapter_status = eeepc_get_adapter_status,
+ .get_power_status = eeepc_get_adapter_status,
+};
+
+static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
+{
+ int ret = -ENOMEM;
+ struct pci_bus *bus = pci_find_bus(0, 1);
+
+ if (!bus) {
+ pr_err("Unable to find wifi PCI bus\n");
+ return -ENODEV;
+ }
+
+ eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
+ if (!eeepc->hotplug_slot)
+ goto error_slot;
+
+ eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
+ GFP_KERNEL);
+ if (!eeepc->hotplug_slot->info)
+ goto error_info;
+
+ eeepc->hotplug_slot->private = eeepc;
+ eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
+ eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
+ eeepc_get_adapter_status(eeepc->hotplug_slot,
+ &eeepc->hotplug_slot->info->adapter_status);
+
+ ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi");
+ if (ret) {
+ pr_err("Unable to register hotplug slot - %d\n", ret);
+ goto error_register;
+ }
+
+ return 0;
+
+error_register:
+ kfree(eeepc->hotplug_slot->info);
+error_info:
+ kfree(eeepc->hotplug_slot);
+ eeepc->hotplug_slot = NULL;
+error_slot:
+ return ret;
+}
+
+/*
+ * Rfkill devices
+ */
+static int eeepc_rfkill_set(void *data, bool blocked)
+{
+ acpi_handle handle = data;
+
+ return write_acpi_int(handle, NULL, !blocked);
+}
+
+static const struct rfkill_ops eeepc_rfkill_ops = {
+ .set_block = eeepc_rfkill_set,
+};
+
+static int eeepc_new_rfkill(struct eeepc_laptop *eeepc,
+ struct rfkill **rfkill,
+ const char *name,
+ enum rfkill_type type, int cm)
+{
+ acpi_handle handle;
+ int result;
+
+ result = acpi_setter_handle(eeepc, cm, &handle);
+ if (result < 0)
+ return result;
+
+ *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
+ &eeepc_rfkill_ops, handle);
+
+ if (!*rfkill)
+ return -EINVAL;
+
+ rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1);
+ result = rfkill_register(*rfkill);
+ if (result) {
+ rfkill_destroy(*rfkill);
+ *rfkill = NULL;
+ return result;
+ }
+ return 0;
+}
+
+static char EEEPC_RFKILL_NODE_1[] = "\\_SB.PCI0.P0P5";
+static char EEEPC_RFKILL_NODE_2[] = "\\_SB.PCI0.P0P6";
+static char EEEPC_RFKILL_NODE_3[] = "\\_SB.PCI0.P0P7";
+
+static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
+{
+ eeepc_unregister_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_1);
+ eeepc_unregister_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_2);
+ eeepc_unregister_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_3);
+ if (eeepc->wlan_rfkill) {
+ rfkill_unregister(eeepc->wlan_rfkill);
+ rfkill_destroy(eeepc->wlan_rfkill);
+ eeepc->wlan_rfkill = NULL;
+ }
+
+ if (eeepc->hotplug_slot)
+ pci_hp_deregister(eeepc->hotplug_slot);
+
+ if (eeepc->bluetooth_rfkill) {
+ rfkill_unregister(eeepc->bluetooth_rfkill);
+ rfkill_destroy(eeepc->bluetooth_rfkill);
+ eeepc->bluetooth_rfkill = NULL;
+ }
+ if (eeepc->wwan3g_rfkill) {
+ rfkill_unregister(eeepc->wwan3g_rfkill);
+ rfkill_destroy(eeepc->wwan3g_rfkill);
+ eeepc->wwan3g_rfkill = NULL;
+ }
+ if (eeepc->wimax_rfkill) {
+ rfkill_unregister(eeepc->wimax_rfkill);
+ rfkill_destroy(eeepc->wimax_rfkill);
+ eeepc->wimax_rfkill = NULL;
+ }
+}
+
+static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
+{
+ int result = 0;
+
+ mutex_init(&eeepc->hotplug_lock);
+
+ result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
+ "eeepc-wlan", RFKILL_TYPE_WLAN,
+ CM_ASL_WLAN);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
+ "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
+ CM_ASL_BLUETOOTH);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
+ "eeepc-wwan3g", RFKILL_TYPE_WWAN,
+ CM_ASL_3G);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
+ "eeepc-wimax", RFKILL_TYPE_WIMAX,
+ CM_ASL_WIMAX);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ if (eeepc->hotplug_disabled)
+ return 0;
+
+ result = eeepc_setup_pci_hotplug(eeepc);
+ /*
+ * If we get -EBUSY then something else is handling the PCI hotplug -
+ * don't fail in this case
+ */
+ if (result == -EBUSY)
+ result = 0;
+
+ eeepc_register_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_1);
+ eeepc_register_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_2);
+ eeepc_register_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_3);
+
+exit:
+ if (result && result != -ENODEV)
+ eeepc_rfkill_exit(eeepc);
+ return result;
+}
+
+/*
+ * Platform driver - hibernate/resume callbacks
+ */
+static int eeepc_hotk_thaw(struct device *device)
+{
+ struct eeepc_laptop *eeepc = dev_get_drvdata(device);
+
+ if (eeepc->wlan_rfkill) {
+ int wlan;
+
+ /*
+ * Work around bios bug - acpi _PTS turns off the wireless led
+ * during suspend. Normally it restores it on resume, but
+ * we should kick it ourselves in case hibernation is aborted.
+ */
+ wlan = get_acpi(eeepc, CM_ASL_WLAN);
+ if (wlan >= 0)
+ set_acpi(eeepc, CM_ASL_WLAN, wlan);
+ }
+
+ return 0;
+}
+
+static int eeepc_hotk_restore(struct device *device)
+{
+ struct eeepc_laptop *eeepc = dev_get_drvdata(device);
+
+ /* Refresh both wlan rfkill state and pci hotplug */
+ if (eeepc->wlan_rfkill) {
+ eeepc_rfkill_hotplug_update(eeepc, EEEPC_RFKILL_NODE_1);
+ eeepc_rfkill_hotplug_update(eeepc, EEEPC_RFKILL_NODE_2);
+ eeepc_rfkill_hotplug_update(eeepc, EEEPC_RFKILL_NODE_3);
+ }
+
+ if (eeepc->bluetooth_rfkill)
+ rfkill_set_sw_state(eeepc->bluetooth_rfkill,
+ get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1);
+ if (eeepc->wwan3g_rfkill)
+ rfkill_set_sw_state(eeepc->wwan3g_rfkill,
+ get_acpi(eeepc, CM_ASL_3G) != 1);
+ if (eeepc->wimax_rfkill)
+ rfkill_set_sw_state(eeepc->wimax_rfkill,
+ get_acpi(eeepc, CM_ASL_WIMAX) != 1);
+
+ return 0;
+}
+
+static const struct dev_pm_ops eeepc_pm_ops = {
+ .thaw = eeepc_hotk_thaw,
+ .restore = eeepc_hotk_restore,
+};
+
+static struct platform_driver platform_driver = {
+ .driver = {
+ .name = EEEPC_LAPTOP_FILE,
+ .pm = &eeepc_pm_ops,
+ }
+};
+
+/*
+ * Hwmon device
+ */
+
+#define EEEPC_EC_SC00 0x61
+#define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */
+#define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */
+#define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */
+
+#define EEEPC_EC_SFB0 0xD0
+#define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */
+
+static inline int eeepc_pwm_to_lmsensors(int value)
+{
+ return value * 255 / 100;
+}
+
+static inline int eeepc_lmsensors_to_pwm(int value)
+{
+ value = clamp_val(value, 0, 255);
+ return value * 100 / 255;
+}
+
+static int eeepc_get_fan_pwm(void)
+{
+ u8 value = 0;
+
+ ec_read(EEEPC_EC_FAN_PWM, &value);
+ return eeepc_pwm_to_lmsensors(value);
+}
+
+static void eeepc_set_fan_pwm(int value)
+{
+ value = eeepc_lmsensors_to_pwm(value);
+ ec_write(EEEPC_EC_FAN_PWM, value);
+}
+
+static int eeepc_get_fan_rpm(void)
+{
+ u8 high = 0;
+ u8 low = 0;
+
+ ec_read(EEEPC_EC_FAN_HRPM, &high);
+ ec_read(EEEPC_EC_FAN_LRPM, &low);
+ return high << 8 | low;
+}
+
+#define EEEPC_EC_FAN_CTRL_BIT 0x02
+#define EEEPC_FAN_CTRL_MANUAL 1
+#define EEEPC_FAN_CTRL_AUTO 2
+
+static int eeepc_get_fan_ctrl(void)
+{
+ u8 value = 0;
+
+ ec_read(EEEPC_EC_FAN_CTRL, &value);
+ if (value & EEEPC_EC_FAN_CTRL_BIT)
+ return EEEPC_FAN_CTRL_MANUAL;
+ else
+ return EEEPC_FAN_CTRL_AUTO;
+}
+
+static void eeepc_set_fan_ctrl(int manual)
+{
+ u8 value = 0;
+
+ ec_read(EEEPC_EC_FAN_CTRL, &value);
+ if (manual == EEEPC_FAN_CTRL_MANUAL)
+ value |= EEEPC_EC_FAN_CTRL_BIT;
+ else
+ value &= ~EEEPC_EC_FAN_CTRL_BIT;
+ ec_write(EEEPC_EC_FAN_CTRL, value);
+}
+
+static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
+{
+ int rv, value;
+
+ rv = parse_arg(buf, &value);
+ if (rv < 0)
+ return rv;
+ set(value);
+ return count;
+}
+
+static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
+{
+ return sprintf(buf, "%d\n", get());
+}
+
+#define EEEPC_SENSOR_SHOW_FUNC(_name, _get) \
+ static ssize_t _name##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+ { \
+ return show_sys_hwmon(_get, buf); \
+ }
+
+#define EEEPC_SENSOR_STORE_FUNC(_name, _set) \
+ static ssize_t _name##_store(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+ { \
+ return store_sys_hwmon(_set, buf, count); \
+ }
+
+#define EEEPC_CREATE_SENSOR_ATTR_RW(_name, _get, _set) \
+ EEEPC_SENSOR_SHOW_FUNC(_name, _get) \
+ EEEPC_SENSOR_STORE_FUNC(_name, _set) \
+ static DEVICE_ATTR_RW(_name)
+
+#define EEEPC_CREATE_SENSOR_ATTR_RO(_name, _get) \
+ EEEPC_SENSOR_SHOW_FUNC(_name, _get) \
+ static DEVICE_ATTR_RO(_name)
+
+EEEPC_CREATE_SENSOR_ATTR_RO(fan1_input, eeepc_get_fan_rpm);
+EEEPC_CREATE_SENSOR_ATTR_RW(pwm1, eeepc_get_fan_pwm,
+ eeepc_set_fan_pwm);
+EEEPC_CREATE_SENSOR_ATTR_RW(pwm1_enable, eeepc_get_fan_ctrl,
+ eeepc_set_fan_ctrl);
+
+static struct attribute *hwmon_attrs[] = {
+ &dev_attr_pwm1.attr,
+ &dev_attr_fan1_input.attr,
+ &dev_attr_pwm1_enable.attr,
+ NULL
+};
+ATTRIBUTE_GROUPS(hwmon);
+
+static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
+{
+ struct device *dev = &eeepc->platform_device->dev;
+ struct device *hwmon;
+
+ hwmon = devm_hwmon_device_register_with_groups(dev, "eeepc", NULL,
+ hwmon_groups);
+ if (IS_ERR(hwmon)) {
+ pr_err("Could not register eeepc hwmon device\n");
+ return PTR_ERR(hwmon);
+ }
+ return 0;
+}
+
+/*
+ * Backlight device
+ */
+static int read_brightness(struct backlight_device *bd)
+{
+ struct eeepc_laptop *eeepc = bl_get_data(bd);
+
+ return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
+}
+
+static int set_brightness(struct backlight_device *bd, int value)
+{
+ struct eeepc_laptop *eeepc = bl_get_data(bd);
+
+ return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
+}
+
+static int update_bl_status(struct backlight_device *bd)
+{
+ return set_brightness(bd, bd->props.brightness);
+}
+
+static const struct backlight_ops eeepcbl_ops = {
+ .get_brightness = read_brightness,
+ .update_status = update_bl_status,
+};
+
+static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
+{
+ struct backlight_device *bd = eeepc->backlight_device;
+ int old = bd->props.brightness;
+
+ backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
+
+ return old;
+}
+
+static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
+{
+ struct backlight_properties props;
+ struct backlight_device *bd;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = 15;
+ bd = backlight_device_register(EEEPC_LAPTOP_FILE,
+ &eeepc->platform_device->dev, eeepc,
+ &eeepcbl_ops, &props);
+ if (IS_ERR(bd)) {
+ pr_err("Could not register eeepc backlight device\n");
+ eeepc->backlight_device = NULL;
+ return PTR_ERR(bd);
+ }
+ eeepc->backlight_device = bd;
+ bd->props.brightness = read_brightness(bd);
+ bd->props.power = FB_BLANK_UNBLANK;
+ backlight_update_status(bd);
+ return 0;
+}
+
+static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
+{
+ backlight_device_unregister(eeepc->backlight_device);
+ eeepc->backlight_device = NULL;
+}
+
+
+/*
+ * Input device (i.e. hotkeys)
+ */
+static int eeepc_input_init(struct eeepc_laptop *eeepc)
+{
+ struct input_dev *input;
+ int error;
+
+ input = input_allocate_device();
+ if (!input)
+ return -ENOMEM;
+
+ input->name = "Asus EeePC extra buttons";
+ input->phys = EEEPC_LAPTOP_FILE "/input0";
+ input->id.bustype = BUS_HOST;
+ input->dev.parent = &eeepc->platform_device->dev;
+
+ error = sparse_keymap_setup(input, eeepc_keymap, NULL);
+ if (error) {
+ pr_err("Unable to setup input device keymap\n");
+ goto err_free_dev;
+ }
+
+ error = input_register_device(input);
+ if (error) {
+ pr_err("Unable to register input device\n");
+ goto err_free_keymap;
+ }
+
+ eeepc->inputdev = input;
+ return 0;
+
+err_free_keymap:
+ sparse_keymap_free(input);
+err_free_dev:
+ input_free_device(input);
+ return error;
+}
+
+static void eeepc_input_exit(struct eeepc_laptop *eeepc)
+{
+ if (eeepc->inputdev) {
+ sparse_keymap_free(eeepc->inputdev);
+ input_unregister_device(eeepc->inputdev);
+ }
+ eeepc->inputdev = NULL;
+}
+
+/*
+ * ACPI driver
+ */
+static void eeepc_input_notify(struct eeepc_laptop *eeepc, int event)
+{
+ if (!eeepc->inputdev)
+ return;
+ if (!sparse_keymap_report_event(eeepc->inputdev, event, 1, true))
+ pr_info("Unknown key %x pressed\n", event);
+}
+
+static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
+{
+ struct eeepc_laptop *eeepc = acpi_driver_data(device);
+ int old_brightness, new_brightness;
+ u16 count;
+
+ if (event > ACPI_MAX_SYS_NOTIFY)
+ return;
+ count = eeepc->event_count[event % 128]++;
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ dev_name(&device->dev), event,
+ count);
+
+ /* Brightness events are special */
+ if (event < NOTIFY_BRN_MIN || event > NOTIFY_BRN_MAX) {
+ eeepc_input_notify(eeepc, event);
+ return;
+ }
+
+ /* Ignore them completely if the acpi video driver is used */
+ if (!eeepc->backlight_device)
+ return;
+
+ /* Update the backlight device. */
+ old_brightness = eeepc_backlight_notify(eeepc);
+
+ /* Convert event to keypress (obsolescent hack) */
+ new_brightness = event - NOTIFY_BRN_MIN;
+
+ if (new_brightness < old_brightness) {
+ event = NOTIFY_BRN_MIN; /* brightness down */
+ } else if (new_brightness > old_brightness) {
+ event = NOTIFY_BRN_MAX; /* brightness up */
+ } else {
+ /*
+ * no change in brightness - already at min/max,
+ * event will be desired value (or else ignored)
+ */
+ }
+ eeepc_input_notify(eeepc, event);
+}
+
+static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
+{
+ const char *model;
+
+ model = dmi_get_system_info(DMI_PRODUCT_NAME);
+ if (!model)
+ return;
+
+ /*
+ * Blacklist for setting cpufv (cpu speed).
+ *
+ * EeePC 4G ("701") implements CFVS, but it is not supported
+ * by the pre-installed OS, and the original option to change it
+ * in the BIOS setup screen was removed in later versions.
+ *
+ * Judging by the lack of "Super Hybrid Engine" on Asus product pages,
+ * this applies to all "701" models (4G/4G Surf/2G Surf).
+ *
+ * So Asus made a deliberate decision not to support it on this model.
+ * We have several reports that using it can cause the system to hang
+ *
+ * The hang has also been reported on a "702" (Model name "8G"?).
+ *
+ * We avoid dmi_check_system() / dmi_match(), because they use
+ * substring matching. We don't want to affect the "701SD"
+ * and "701SDX" models, because they do support S.H.E.
+ */
+ if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
+ eeepc->cpufv_disabled = true;
+ pr_info("model %s does not officially support setting cpu speed\n",
+ model);
+ pr_info("cpufv disabled to avoid instability\n");
+ }
+
+ /*
+ * Blacklist for wlan hotplug
+ *
+ * Eeepc 1005HA doesn't work like others models and don't need the
+ * hotplug code. In fact, current hotplug code seems to unplug another
+ * device...
+ */
+ if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0 ||
+ strcmp(model, "1005PE") == 0) {
+ eeepc->hotplug_disabled = true;
+ pr_info("wlan hotplug disabled\n");
+ }
+}
+
+static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
+{
+ int dummy;
+
+ /* Some BIOSes do not report cm although it is available.
+ Check if cm_getv[cm] works and, if yes, assume cm should be set. */
+ if (!(eeepc->cm_supported & (1 << cm))
+ && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) {
+ pr_info("%s (%x) not reported by BIOS, enabling anyway\n",
+ name, 1 << cm);
+ eeepc->cm_supported |= 1 << cm;
+ }
+}
+
+static void cmsg_quirks(struct eeepc_laptop *eeepc)
+{
+ cmsg_quirk(eeepc, CM_ASL_LID, "LID");
+ cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE");
+ cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER");
+ cmsg_quirk(eeepc, CM_ASL_TPD, "TPD");
+}
+
+static int eeepc_acpi_init(struct eeepc_laptop *eeepc)
+{
+ unsigned int init_flags;
+ int result;
+
+ result = acpi_bus_get_status(eeepc->device);
+ if (result)
+ return result;
+ if (!eeepc->device->status.present) {
+ pr_err("Hotkey device not present, aborting\n");
+ return -ENODEV;
+ }
+
+ init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
+ pr_notice("Hotkey init flags 0x%x\n", init_flags);
+
+ if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
+ pr_err("Hotkey initialization failed\n");
+ return -ENODEV;
+ }
+
+ /* get control methods supported */
+ if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) {
+ pr_err("Get control methods supported failed\n");
+ return -ENODEV;
+ }
+ cmsg_quirks(eeepc);
+ pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
+
+ return 0;
+}
+
+static void eeepc_enable_camera(struct eeepc_laptop *eeepc)
+{
+ /*
+ * If the following call to set_acpi() fails, it's because there's no
+ * camera so we can ignore the error.
+ */
+ if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
+ set_acpi(eeepc, CM_ASL_CAMERA, 1);
+}
+
+static bool eeepc_device_present;
+
+static int eeepc_acpi_add(struct acpi_device *device)
+{
+ struct eeepc_laptop *eeepc;
+ int result;
+
+ pr_notice(EEEPC_LAPTOP_NAME "\n");
+ eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
+ if (!eeepc)
+ return -ENOMEM;
+ eeepc->handle = device->handle;
+ strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME);
+ strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
+ device->driver_data = eeepc;
+ eeepc->device = device;
+
+ eeepc->hotplug_disabled = hotplug_disabled;
+
+ eeepc_dmi_check(eeepc);
+
+ result = eeepc_acpi_init(eeepc);
+ if (result)
+ goto fail_platform;
+ eeepc_enable_camera(eeepc);
+
+ /*
+ * Register the platform device first. It is used as a parent for the
+ * sub-devices below.
+ *
+ * Note that if there are multiple instances of this ACPI device it
+ * will bail out, because the platform device is registered with a
+ * fixed name. Of course it doesn't make sense to have more than one,
+ * and machine-specific scripts find the fixed name convenient. But
+ * It's also good for us to exclude multiple instances because both
+ * our hwmon and our wlan rfkill subdevice use global ACPI objects
+ * (the EC and the wlan PCI slot respectively).
+ */
+ result = eeepc_platform_init(eeepc);
+ if (result)
+ goto fail_platform;
+
+ if (!acpi_video_backlight_support()) {
+ result = eeepc_backlight_init(eeepc);
+ if (result)
+ goto fail_backlight;
+ } else {
+ pr_info("Backlight controlled by ACPI video driver\n");
+ }
+
+ result = eeepc_input_init(eeepc);
+ if (result)
+ goto fail_input;
+
+ result = eeepc_hwmon_init(eeepc);
+ if (result)
+ goto fail_hwmon;
+
+ result = eeepc_led_init(eeepc);
+ if (result)
+ goto fail_led;
+
+ result = eeepc_rfkill_init(eeepc);
+ if (result)
+ goto fail_rfkill;
+
+ eeepc_device_present = true;
+ return 0;
+
+fail_rfkill:
+ eeepc_led_exit(eeepc);
+fail_led:
+fail_hwmon:
+ eeepc_input_exit(eeepc);
+fail_input:
+ eeepc_backlight_exit(eeepc);
+fail_backlight:
+ eeepc_platform_exit(eeepc);
+fail_platform:
+ kfree(eeepc);
+
+ return result;
+}
+
+static int eeepc_acpi_remove(struct acpi_device *device)
+{
+ struct eeepc_laptop *eeepc = acpi_driver_data(device);
+
+ eeepc_backlight_exit(eeepc);
+ eeepc_rfkill_exit(eeepc);
+ eeepc_input_exit(eeepc);
+ eeepc_led_exit(eeepc);
+ eeepc_platform_exit(eeepc);
+
+ kfree(eeepc);
+ return 0;
+}
+
+
+static const struct acpi_device_id eeepc_device_ids[] = {
+ {EEEPC_ACPI_HID, 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
+
+static struct acpi_driver eeepc_acpi_driver = {
+ .name = EEEPC_LAPTOP_NAME,
+ .class = EEEPC_ACPI_CLASS,
+ .owner = THIS_MODULE,
+ .ids = eeepc_device_ids,
+ .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
+ .ops = {
+ .add = eeepc_acpi_add,
+ .remove = eeepc_acpi_remove,
+ .notify = eeepc_acpi_notify,
+ },
+};
+
+
+static int __init eeepc_laptop_init(void)
+{
+ int result;
+
+ result = platform_driver_register(&platform_driver);
+ if (result < 0)
+ return result;
+
+ result = acpi_bus_register_driver(&eeepc_acpi_driver);
+ if (result < 0)
+ goto fail_acpi_driver;
+
+ if (!eeepc_device_present) {
+ result = -ENODEV;
+ goto fail_no_device;
+ }
+
+ return 0;
+
+fail_no_device:
+ acpi_bus_unregister_driver(&eeepc_acpi_driver);
+fail_acpi_driver:
+ platform_driver_unregister(&platform_driver);
+ return result;
+}
+
+static void __exit eeepc_laptop_exit(void)
+{
+ acpi_bus_unregister_driver(&eeepc_acpi_driver);
+ platform_driver_unregister(&platform_driver);
+}
+
+module_init(eeepc_laptop_init);
+module_exit(eeepc_laptop_exit);
diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c
new file mode 100644
index 000000000..14fd2ecb0
--- /dev/null
+++ b/drivers/platform/x86/eeepc-wmi.c
@@ -0,0 +1,278 @@
+/*
+ * Eee PC WMI hotkey driver
+ *
+ * Copyright(C) 2010 Intel Corporation.
+ * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
+ *
+ * Portions based on wistron_btns.c:
+ * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
+ * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
+ * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/dmi.h>
+#include <linux/fb.h>
+#include <linux/acpi.h>
+
+#include "asus-wmi.h"
+
+#define EEEPC_WMI_FILE "eeepc-wmi"
+
+MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>");
+MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver");
+MODULE_LICENSE("GPL");
+
+#define EEEPC_ACPI_HID "ASUS010" /* old _HID used in eeepc-laptop */
+
+#define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000"
+
+MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID);
+
+static bool hotplug_wireless;
+
+module_param(hotplug_wireless, bool, 0444);
+MODULE_PARM_DESC(hotplug_wireless,
+ "Enable hotplug for wireless device. "
+ "If your laptop needs that, please report to "
+ "acpi4asus-user@lists.sourceforge.net.");
+
+/* Values for T101MT "Home" key */
+#define HOME_PRESS 0xe4
+#define HOME_HOLD 0xea
+#define HOME_RELEASE 0xe5
+
+static const struct key_entry eeepc_wmi_keymap[] = {
+ { KE_KEY, ASUS_WMI_BRN_DOWN, { KEY_BRIGHTNESSDOWN } },
+ { KE_KEY, ASUS_WMI_BRN_UP, { KEY_BRIGHTNESSUP } },
+ /* Sleep already handled via generic ACPI code */
+ { KE_KEY, 0x30, { KEY_VOLUMEUP } },
+ { KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
+ { KE_KEY, 0x32, { KEY_MUTE } },
+ { KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */
+ { KE_KEY, 0x5d, { KEY_WLAN } },
+ { KE_KEY, 0x6b, { KEY_TOUCHPAD_TOGGLE } }, /* Toggle Touchpad */
+ { KE_KEY, 0x82, { KEY_CAMERA } },
+ { KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } },
+ { KE_KEY, 0x88, { KEY_WLAN } },
+ { KE_KEY, 0xbd, { KEY_CAMERA } },
+ { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } },
+ { KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */
+ { KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */
+ { KE_KEY, HOME_PRESS, { KEY_CONFIG } }, /* Home/Express gate key */
+ { KE_KEY, 0xe8, { KEY_SCREENLOCK } },
+ { KE_KEY, 0xe9, { KEY_DISPLAYTOGGLE } },
+ { KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } },
+ { KE_KEY, 0xec, { KEY_CAMERA_UP } },
+ { KE_KEY, 0xed, { KEY_CAMERA_DOWN } },
+ { KE_KEY, 0xee, { KEY_CAMERA_LEFT } },
+ { KE_KEY, 0xef, { KEY_CAMERA_RIGHT } },
+ { KE_KEY, 0xf3, { KEY_MENU } },
+ { KE_KEY, 0xf5, { KEY_HOMEPAGE } },
+ { KE_KEY, 0xf6, { KEY_ESC } },
+ { KE_END, 0},
+};
+
+static struct quirk_entry quirk_asus_unknown = {
+};
+
+static struct quirk_entry quirk_asus_1000h = {
+ .hotplug_wireless = true,
+};
+
+static struct quirk_entry quirk_asus_et2012_type1 = {
+ .store_backlight_power = true,
+};
+
+static struct quirk_entry quirk_asus_et2012_type3 = {
+ .scalar_panel_brightness = true,
+ .store_backlight_power = true,
+};
+
+static struct quirk_entry quirk_asus_x101ch = {
+ /* We need this when ACPI function doesn't do this well */
+ .wmi_backlight_power = true,
+};
+
+static struct quirk_entry *quirks;
+
+static void et2012_quirks(void)
+{
+ const struct dmi_device *dev = NULL;
+ char oemstring[30];
+
+ while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
+ if (sscanf(dev->name, "AEMS%24c", oemstring) == 1) {
+ if (oemstring[18] == '1')
+ quirks = &quirk_asus_et2012_type1;
+ else if (oemstring[18] == '3')
+ quirks = &quirk_asus_et2012_type3;
+ break;
+ }
+ }
+}
+
+static int dmi_matched(const struct dmi_system_id *dmi)
+{
+ char *model;
+
+ quirks = dmi->driver_data;
+
+ model = (char *)dmi->matches[1].substr;
+ if (unlikely(strncmp(model, "ET2012", 6) == 0))
+ et2012_quirks();
+
+ return 1;
+}
+
+static const struct dmi_system_id asus_quirks[] = {
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK Computer INC. 1000H",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "1000H"),
+ },
+ .driver_data = &quirk_asus_1000h,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK Computer INC. ET2012E/I",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ET2012"),
+ },
+ .driver_data = &quirk_asus_unknown,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK Computer INC. X101CH",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X101CH"),
+ },
+ .driver_data = &quirk_asus_x101ch,
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "ASUSTeK Computer INC. 1015CX",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"),
+ },
+ .driver_data = &quirk_asus_x101ch,
+ },
+ {},
+};
+
+static void eeepc_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code,
+ unsigned int *value, bool *autorelease)
+{
+ switch (*code) {
+ case HOME_PRESS:
+ *value = 1;
+ *autorelease = 0;
+ break;
+ case HOME_HOLD:
+ *code = ASUS_WMI_KEY_IGNORE;
+ break;
+ case HOME_RELEASE:
+ *code = HOME_PRESS;
+ *value = 0;
+ *autorelease = 0;
+ break;
+ }
+}
+
+static acpi_status eeepc_wmi_parse_device(acpi_handle handle, u32 level,
+ void *context, void **retval)
+{
+ pr_warn("Found legacy ATKD device (%s)\n", EEEPC_ACPI_HID);
+ *(bool *)context = true;
+ return AE_CTRL_TERMINATE;
+}
+
+static int eeepc_wmi_check_atkd(void)
+{
+ acpi_status status;
+ bool found = false;
+
+ status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device,
+ &found, NULL);
+
+ if (ACPI_FAILURE(status) || !found)
+ return 0;
+ return -1;
+}
+
+static int eeepc_wmi_probe(struct platform_device *pdev)
+{
+ if (eeepc_wmi_check_atkd()) {
+ pr_warn("WMI device present, but legacy ATKD device is also "
+ "present and enabled\n");
+ pr_warn("You probably booted with acpi_osi=\"Linux\" or "
+ "acpi_osi=\"!Windows 2009\"\n");
+ pr_warn("Can't load eeepc-wmi, use default acpi_osi "
+ "(preferred) or eeepc-laptop\n");
+ return -EBUSY;
+ }
+ return 0;
+}
+
+static void eeepc_wmi_quirks(struct asus_wmi_driver *driver)
+{
+ quirks = &quirk_asus_unknown;
+ quirks->hotplug_wireless = hotplug_wireless;
+
+ dmi_check_system(asus_quirks);
+
+ driver->quirks = quirks;
+ driver->quirks->wapf = -1;
+ driver->panel_power = FB_BLANK_UNBLANK;
+}
+
+static struct asus_wmi_driver asus_wmi_driver = {
+ .name = EEEPC_WMI_FILE,
+ .owner = THIS_MODULE,
+ .event_guid = EEEPC_WMI_EVENT_GUID,
+ .keymap = eeepc_wmi_keymap,
+ .input_name = "Eee PC WMI hotkeys",
+ .input_phys = EEEPC_WMI_FILE "/input0",
+ .key_filter = eeepc_wmi_key_filter,
+ .probe = eeepc_wmi_probe,
+ .detect_quirks = eeepc_wmi_quirks,
+};
+
+
+static int __init eeepc_wmi_init(void)
+{
+ return asus_wmi_register_driver(&asus_wmi_driver);
+}
+
+static void __exit eeepc_wmi_exit(void)
+{
+ asus_wmi_unregister_driver(&asus_wmi_driver);
+}
+
+module_init(eeepc_wmi_init);
+module_exit(eeepc_wmi_exit);
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
new file mode 100644
index 000000000..2a9afa261
--- /dev/null
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -0,0 +1,1215 @@
+/*-*-linux-c-*-*/
+
+/*
+ Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@just42.net>
+ Copyright (C) 2008 Peter Gruber <nokos@gmx.net>
+ Copyright (C) 2008 Tony Vroon <tony@linx.net>
+ Based on earlier work:
+ Copyright (C) 2003 Shane Spencer <shane@bogomip.com>
+ Adrian Yee <brewt-fujitsu@brewt.org>
+
+ Templated from msi-laptop.c and thinkpad_acpi.c which is copyright
+ by its respective authors.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
+ */
+
+/*
+ * fujitsu-laptop.c - Fujitsu laptop support, providing access to additional
+ * features made available on a range of Fujitsu laptops including the
+ * P2xxx/P5xxx/S6xxx/S7xxx series.
+ *
+ * This driver exports a few files in /sys/devices/platform/fujitsu-laptop/;
+ * others may be added at a later date.
+ *
+ * lcd_level - Screen brightness: contains a single integer in the
+ * range 0..7. (rw)
+ *
+ * In addition to these platform device attributes the driver
+ * registers itself in the Linux backlight control subsystem and is
+ * available to userspace under /sys/class/backlight/fujitsu-laptop/.
+ *
+ * Hotkeys present on certain Fujitsu laptops (eg: the S6xxx series) are
+ * also supported by this driver.
+ *
+ * This driver has been tested on a Fujitsu Lifebook S6410, S7020 and
+ * P8010. It should work on most P-series and S-series Lifebooks, but
+ * YMMV.
+ *
+ * The module parameter use_alt_lcd_levels switches between different ACPI
+ * brightness controls which are used by different Fujitsu laptops. In most
+ * cases the correct method is automatically detected. "use_alt_lcd_levels=1"
+ * is applicable for a Fujitsu Lifebook S6410 if autodetection fails.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <linux/backlight.h>
+#include <linux/fb.h>
+#include <linux/input.h>
+#include <linux/kfifo.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
+#include <linux/leds.h>
+#endif
+
+#define FUJITSU_DRIVER_VERSION "0.6.0"
+
+#define FUJITSU_LCD_N_LEVELS 8
+
+#define ACPI_FUJITSU_CLASS "fujitsu"
+#define ACPI_FUJITSU_HID "FUJ02B1"
+#define ACPI_FUJITSU_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver"
+#define ACPI_FUJITSU_DEVICE_NAME "Fujitsu FUJ02B1"
+#define ACPI_FUJITSU_HOTKEY_HID "FUJ02E3"
+#define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
+#define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3"
+
+#define ACPI_FUJITSU_NOTIFY_CODE1 0x80
+
+#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86
+#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87
+
+/* FUNC interface - command values */
+#define FUNC_RFKILL 0x1000
+#define FUNC_LEDS 0x1001
+#define FUNC_BUTTONS 0x1002
+#define FUNC_BACKLIGHT 0x1004
+
+/* FUNC interface - responses */
+#define UNSUPPORTED_CMD 0x80000000
+
+#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
+/* FUNC interface - LED control */
+#define FUNC_LED_OFF 0x1
+#define FUNC_LED_ON 0x30001
+#define KEYBOARD_LAMPS 0x100
+#define LOGOLAMP_POWERON 0x2000
+#define LOGOLAMP_ALWAYS 0x4000
+#endif
+
+/* Hotkey details */
+#define KEY1_CODE 0x410 /* codes for the keys in the GIRB register */
+#define KEY2_CODE 0x411
+#define KEY3_CODE 0x412
+#define KEY4_CODE 0x413
+
+#define MAX_HOTKEY_RINGBUFFER_SIZE 100
+#define RINGBUFFERSIZE 40
+
+/* Debugging */
+#define FUJLAPTOP_LOG ACPI_FUJITSU_HID ": "
+#define FUJLAPTOP_ERR KERN_ERR FUJLAPTOP_LOG
+#define FUJLAPTOP_NOTICE KERN_NOTICE FUJLAPTOP_LOG
+#define FUJLAPTOP_INFO KERN_INFO FUJLAPTOP_LOG
+#define FUJLAPTOP_DEBUG KERN_DEBUG FUJLAPTOP_LOG
+
+#define FUJLAPTOP_DBG_ALL 0xffff
+#define FUJLAPTOP_DBG_ERROR 0x0001
+#define FUJLAPTOP_DBG_WARN 0x0002
+#define FUJLAPTOP_DBG_INFO 0x0004
+#define FUJLAPTOP_DBG_TRACE 0x0008
+
+#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
+#define vdbg_printk(a_dbg_level, format, arg...) \
+ do { if (dbg_level & a_dbg_level) \
+ printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \
+ } while (0)
+#else
+#define vdbg_printk(a_dbg_level, format, arg...) \
+ do { } while (0)
+#endif
+
+/* Device controlling the backlight and associated keys */
+struct fujitsu_t {
+ acpi_handle acpi_handle;
+ struct acpi_device *dev;
+ struct input_dev *input;
+ char phys[32];
+ struct backlight_device *bl_device;
+ struct platform_device *pf_device;
+ int keycode1, keycode2, keycode3, keycode4;
+
+ unsigned int max_brightness;
+ unsigned int brightness_changed;
+ unsigned int brightness_level;
+};
+
+static struct fujitsu_t *fujitsu;
+static int use_alt_lcd_levels = -1;
+static int disable_brightness_adjust = -1;
+
+/* Device used to access other hotkeys on the laptop */
+struct fujitsu_hotkey_t {
+ acpi_handle acpi_handle;
+ struct acpi_device *dev;
+ struct input_dev *input;
+ char phys[32];
+ struct platform_device *pf_device;
+ struct kfifo fifo;
+ spinlock_t fifo_lock;
+ int rfkill_supported;
+ int rfkill_state;
+ int logolamp_registered;
+ int kblamps_registered;
+};
+
+static struct fujitsu_hotkey_t *fujitsu_hotkey;
+
+static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event);
+
+#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
+static enum led_brightness logolamp_get(struct led_classdev *cdev);
+static void logolamp_set(struct led_classdev *cdev,
+ enum led_brightness brightness);
+
+static struct led_classdev logolamp_led = {
+ .name = "fujitsu::logolamp",
+ .brightness_get = logolamp_get,
+ .brightness_set = logolamp_set
+};
+
+static enum led_brightness kblamps_get(struct led_classdev *cdev);
+static void kblamps_set(struct led_classdev *cdev,
+ enum led_brightness brightness);
+
+static struct led_classdev kblamps_led = {
+ .name = "fujitsu::kblamps",
+ .brightness_get = kblamps_get,
+ .brightness_set = kblamps_set
+};
+#endif
+
+#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
+static u32 dbg_level = 0x03;
+#endif
+
+static void acpi_fujitsu_notify(struct acpi_device *device, u32 event);
+
+/* Fujitsu ACPI interface function */
+
+static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
+{
+ acpi_status status = AE_OK;
+ union acpi_object params[4] = {
+ { .type = ACPI_TYPE_INTEGER },
+ { .type = ACPI_TYPE_INTEGER },
+ { .type = ACPI_TYPE_INTEGER },
+ { .type = ACPI_TYPE_INTEGER }
+ };
+ struct acpi_object_list arg_list = { 4, &params[0] };
+ unsigned long long value;
+ acpi_handle handle = NULL;
+
+ status = acpi_get_handle(fujitsu_hotkey->acpi_handle, "FUNC", &handle);
+ if (ACPI_FAILURE(status)) {
+ vdbg_printk(FUJLAPTOP_DBG_ERROR,
+ "FUNC interface is not present\n");
+ return -ENODEV;
+ }
+
+ params[0].integer.value = cmd;
+ params[1].integer.value = arg0;
+ params[2].integer.value = arg1;
+ params[3].integer.value = arg2;
+
+ status = acpi_evaluate_integer(handle, NULL, &arg_list, &value);
+ if (ACPI_FAILURE(status)) {
+ vdbg_printk(FUJLAPTOP_DBG_WARN,
+ "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n",
+ cmd, arg0, arg1, arg2);
+ return -ENODEV;
+ }
+
+ vdbg_printk(FUJLAPTOP_DBG_TRACE,
+ "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
+ cmd, arg0, arg1, arg2, (int)value);
+ return value;
+}
+
+#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
+/* LED class callbacks */
+
+static void logolamp_set(struct led_classdev *cdev,
+ enum led_brightness brightness)
+{
+ if (brightness >= LED_FULL) {
+ call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
+ call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON);
+ } else if (brightness >= LED_HALF) {
+ call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
+ call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF);
+ } else {
+ call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF);
+ }
+}
+
+static void kblamps_set(struct led_classdev *cdev,
+ enum led_brightness brightness)
+{
+ if (brightness >= LED_FULL)
+ call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
+ else
+ call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
+}
+
+static enum led_brightness logolamp_get(struct led_classdev *cdev)
+{
+ enum led_brightness brightness = LED_OFF;
+ int poweron, always;
+
+ poweron = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
+ if (poweron == FUNC_LED_ON) {
+ brightness = LED_HALF;
+ always = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
+ if (always == FUNC_LED_ON)
+ brightness = LED_FULL;
+ }
+ return brightness;
+}
+
+static enum led_brightness kblamps_get(struct led_classdev *cdev)
+{
+ enum led_brightness brightness = LED_OFF;
+
+ if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
+ brightness = LED_FULL;
+
+ return brightness;
+}
+#endif
+
+/* Hardware access for LCD brightness control */
+
+static int set_lcd_level(int level)
+{
+ acpi_status status = AE_OK;
+ acpi_handle handle = NULL;
+
+ vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
+ level);
+
+ if (level < 0 || level >= fujitsu->max_brightness)
+ return -EINVAL;
+
+ status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
+ if (ACPI_FAILURE(status)) {
+ vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
+ return -ENODEV;
+ }
+
+
+ status = acpi_execute_simple_method(handle, NULL, level);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ return 0;
+}
+
+static int set_lcd_level_alt(int level)
+{
+ acpi_status status = AE_OK;
+ acpi_handle handle = NULL;
+
+ vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
+ level);
+
+ if (level < 0 || level >= fujitsu->max_brightness)
+ return -EINVAL;
+
+ status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
+ if (ACPI_FAILURE(status)) {
+ vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
+ return -ENODEV;
+ }
+
+ status = acpi_execute_simple_method(handle, NULL, level);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ return 0;
+}
+
+static int get_lcd_level(void)
+{
+ unsigned long long state = 0;
+ acpi_status status = AE_OK;
+
+ vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
+
+ status =
+ acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
+ if (ACPI_FAILURE(status))
+ return 0;
+
+ fujitsu->brightness_level = state & 0x0fffffff;
+
+ if (state & 0x80000000)
+ fujitsu->brightness_changed = 1;
+ else
+ fujitsu->brightness_changed = 0;
+
+ return fujitsu->brightness_level;
+}
+
+static int get_max_brightness(void)
+{
+ unsigned long long state = 0;
+ acpi_status status = AE_OK;
+
+ vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
+
+ status =
+ acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
+ if (ACPI_FAILURE(status))
+ return -1;
+
+ fujitsu->max_brightness = state;
+
+ return fujitsu->max_brightness;
+}
+
+/* Backlight device stuff */
+
+static int bl_get_brightness(struct backlight_device *b)
+{
+ return get_lcd_level();
+}
+
+static int bl_update_status(struct backlight_device *b)
+{
+ int ret;
+ if (b->props.power == FB_BLANK_POWERDOWN)
+ ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
+ else
+ ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
+ if (ret != 0)
+ vdbg_printk(FUJLAPTOP_DBG_ERROR,
+ "Unable to adjust backlight power, error code %i\n",
+ ret);
+
+ if (use_alt_lcd_levels)
+ ret = set_lcd_level_alt(b->props.brightness);
+ else
+ ret = set_lcd_level(b->props.brightness);
+ if (ret != 0)
+ vdbg_printk(FUJLAPTOP_DBG_ERROR,
+ "Unable to adjust LCD brightness, error code %i\n",
+ ret);
+ return ret;
+}
+
+static const struct backlight_ops fujitsubl_ops = {
+ .get_brightness = bl_get_brightness,
+ .update_status = bl_update_status,
+};
+
+/* Platform LCD brightness device */
+
+static ssize_t
+show_max_brightness(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ int ret;
+
+ ret = get_max_brightness();
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%i\n", ret);
+}
+
+static ssize_t
+show_brightness_changed(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ int ret;
+
+ ret = fujitsu->brightness_changed;
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%i\n", ret);
+}
+
+static ssize_t show_lcd_level(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ int ret;
+
+ ret = get_lcd_level();
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%i\n", ret);
+}
+
+static ssize_t store_lcd_level(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+
+ int level, ret;
+
+ if (sscanf(buf, "%i", &level) != 1
+ || (level < 0 || level >= fujitsu->max_brightness))
+ return -EINVAL;
+
+ if (use_alt_lcd_levels)
+ ret = set_lcd_level_alt(level);
+ else
+ ret = set_lcd_level(level);
+ if (ret < 0)
+ return ret;
+
+ ret = get_lcd_level();
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t
+ignore_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ return count;
+}
+
+static ssize_t
+show_lid_state(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ if (!(fujitsu_hotkey->rfkill_supported & 0x100))
+ return sprintf(buf, "unknown\n");
+ if (fujitsu_hotkey->rfkill_state & 0x100)
+ return sprintf(buf, "open\n");
+ else
+ return sprintf(buf, "closed\n");
+}
+
+static ssize_t
+show_dock_state(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ if (!(fujitsu_hotkey->rfkill_supported & 0x200))
+ return sprintf(buf, "unknown\n");
+ if (fujitsu_hotkey->rfkill_state & 0x200)
+ return sprintf(buf, "docked\n");
+ else
+ return sprintf(buf, "undocked\n");
+}
+
+static ssize_t
+show_radios_state(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ if (!(fujitsu_hotkey->rfkill_supported & 0x20))
+ return sprintf(buf, "unknown\n");
+ if (fujitsu_hotkey->rfkill_state & 0x20)
+ return sprintf(buf, "on\n");
+ else
+ return sprintf(buf, "killed\n");
+}
+
+static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
+static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
+ ignore_store);
+static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
+static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
+static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
+static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
+
+static struct attribute *fujitsupf_attributes[] = {
+ &dev_attr_brightness_changed.attr,
+ &dev_attr_max_brightness.attr,
+ &dev_attr_lcd_level.attr,
+ &dev_attr_lid.attr,
+ &dev_attr_dock.attr,
+ &dev_attr_radios.attr,
+ NULL
+};
+
+static struct attribute_group fujitsupf_attribute_group = {
+ .attrs = fujitsupf_attributes
+};
+
+static struct platform_driver fujitsupf_driver = {
+ .driver = {
+ .name = "fujitsu-laptop",
+ }
+};
+
+static void __init dmi_check_cb_common(const struct dmi_system_id *id)
+{
+ pr_info("Identified laptop model '%s'\n", id->ident);
+ if (use_alt_lcd_levels == -1) {
+ if (acpi_has_method(NULL,
+ "\\_SB.PCI0.LPCB.FJEX.SBL2"))
+ use_alt_lcd_levels = 1;
+ else
+ use_alt_lcd_levels = 0;
+ vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as "
+ "%i\n", use_alt_lcd_levels);
+ }
+}
+
+static int __init dmi_check_cb_s6410(const struct dmi_system_id *id)
+{
+ dmi_check_cb_common(id);
+ fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
+ fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
+ return 1;
+}
+
+static int __init dmi_check_cb_s6420(const struct dmi_system_id *id)
+{
+ dmi_check_cb_common(id);
+ fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
+ fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
+ return 1;
+}
+
+static int __init dmi_check_cb_p8010(const struct dmi_system_id *id)
+{
+ dmi_check_cb_common(id);
+ fujitsu->keycode1 = KEY_HELP; /* "Support" */
+ fujitsu->keycode3 = KEY_SWITCHVIDEOMODE; /* "Presentation" */
+ fujitsu->keycode4 = KEY_WWW; /* "Internet" */
+ return 1;
+}
+
+static const struct dmi_system_id fujitsu_dmi_table[] __initconst = {
+ {
+ .ident = "Fujitsu Siemens S6410",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
+ },
+ .callback = dmi_check_cb_s6410},
+ {
+ .ident = "Fujitsu Siemens S6420",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
+ },
+ .callback = dmi_check_cb_s6420},
+ {
+ .ident = "Fujitsu LifeBook P8010",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
+ },
+ .callback = dmi_check_cb_p8010},
+ {}
+};
+
+/* ACPI device for LCD brightness control */
+
+static int acpi_fujitsu_add(struct acpi_device *device)
+{
+ int state = 0;
+ struct input_dev *input;
+ int error;
+
+ if (!device)
+ return -EINVAL;
+
+ fujitsu->acpi_handle = device->handle;
+ sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
+ sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
+ device->driver_data = fujitsu;
+
+ fujitsu->input = input = input_allocate_device();
+ if (!input) {
+ error = -ENOMEM;
+ goto err_stop;
+ }
+
+ snprintf(fujitsu->phys, sizeof(fujitsu->phys),
+ "%s/video/input0", acpi_device_hid(device));
+
+ input->name = acpi_device_name(device);
+ input->phys = fujitsu->phys;
+ input->id.bustype = BUS_HOST;
+ input->id.product = 0x06;
+ input->dev.parent = &device->dev;
+ input->evbit[0] = BIT(EV_KEY);
+ set_bit(KEY_BRIGHTNESSUP, input->keybit);
+ set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
+ set_bit(KEY_UNKNOWN, input->keybit);
+
+ error = input_register_device(input);
+ if (error)
+ goto err_free_input_dev;
+
+ error = acpi_bus_update_power(fujitsu->acpi_handle, &state);
+ if (error) {
+ pr_err("Error reading power state\n");
+ goto err_unregister_input_dev;
+ }
+
+ pr_info("ACPI: %s [%s] (%s)\n",
+ acpi_device_name(device), acpi_device_bid(device),
+ !device->power.state ? "on" : "off");
+
+ fujitsu->dev = device;
+
+ if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
+ vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
+ if (ACPI_FAILURE
+ (acpi_evaluate_object
+ (device->handle, METHOD_NAME__INI, NULL, NULL)))
+ pr_err("_INI Method failed\n");
+ }
+
+ /* do config (detect defaults) */
+ use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
+ disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
+ vdbg_printk(FUJLAPTOP_DBG_INFO,
+ "config: [alt interface: %d], [adjust disable: %d]\n",
+ use_alt_lcd_levels, disable_brightness_adjust);
+
+ if (get_max_brightness() <= 0)
+ fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
+ get_lcd_level();
+
+ return 0;
+
+err_unregister_input_dev:
+ input_unregister_device(input);
+ input = NULL;
+err_free_input_dev:
+ input_free_device(input);
+err_stop:
+ return error;
+}
+
+static int acpi_fujitsu_remove(struct acpi_device *device)
+{
+ struct fujitsu_t *fujitsu = acpi_driver_data(device);
+ struct input_dev *input = fujitsu->input;
+
+ input_unregister_device(input);
+
+ fujitsu->acpi_handle = NULL;
+
+ return 0;
+}
+
+/* Brightness notify */
+
+static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
+{
+ struct input_dev *input;
+ int keycode;
+ int oldb, newb;
+
+ input = fujitsu->input;
+
+ switch (event) {
+ case ACPI_FUJITSU_NOTIFY_CODE1:
+ keycode = 0;
+ oldb = fujitsu->brightness_level;
+ get_lcd_level();
+ newb = fujitsu->brightness_level;
+
+ vdbg_printk(FUJLAPTOP_DBG_TRACE,
+ "brightness button event [%i -> %i (%i)]\n",
+ oldb, newb, fujitsu->brightness_changed);
+
+ if (oldb < newb) {
+ if (disable_brightness_adjust != 1) {
+ if (use_alt_lcd_levels)
+ set_lcd_level_alt(newb);
+ else
+ set_lcd_level(newb);
+ }
+ keycode = KEY_BRIGHTNESSUP;
+ } else if (oldb > newb) {
+ if (disable_brightness_adjust != 1) {
+ if (use_alt_lcd_levels)
+ set_lcd_level_alt(newb);
+ else
+ set_lcd_level(newb);
+ }
+ keycode = KEY_BRIGHTNESSDOWN;
+ }
+ break;
+ default:
+ keycode = KEY_UNKNOWN;
+ vdbg_printk(FUJLAPTOP_DBG_WARN,
+ "unsupported event [0x%x]\n", event);
+ break;
+ }
+
+ if (keycode != 0) {
+ input_report_key(input, keycode, 1);
+ input_sync(input);
+ input_report_key(input, keycode, 0);
+ input_sync(input);
+ }
+}
+
+/* ACPI device for hotkey handling */
+
+static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
+{
+ int result = 0;
+ int state = 0;
+ struct input_dev *input;
+ int error;
+ int i;
+
+ if (!device)
+ return -EINVAL;
+
+ fujitsu_hotkey->acpi_handle = device->handle;
+ sprintf(acpi_device_name(device), "%s",
+ ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
+ sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
+ device->driver_data = fujitsu_hotkey;
+
+ /* kfifo */
+ spin_lock_init(&fujitsu_hotkey->fifo_lock);
+ error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
+ GFP_KERNEL);
+ if (error) {
+ pr_err("kfifo_alloc failed\n");
+ goto err_stop;
+ }
+
+ fujitsu_hotkey->input = input = input_allocate_device();
+ if (!input) {
+ error = -ENOMEM;
+ goto err_free_fifo;
+ }
+
+ snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
+ "%s/video/input0", acpi_device_hid(device));
+
+ input->name = acpi_device_name(device);
+ input->phys = fujitsu_hotkey->phys;
+ input->id.bustype = BUS_HOST;
+ input->id.product = 0x06;
+ input->dev.parent = &device->dev;
+
+ set_bit(EV_KEY, input->evbit);
+ set_bit(fujitsu->keycode1, input->keybit);
+ set_bit(fujitsu->keycode2, input->keybit);
+ set_bit(fujitsu->keycode3, input->keybit);
+ set_bit(fujitsu->keycode4, input->keybit);
+ set_bit(KEY_UNKNOWN, input->keybit);
+
+ error = input_register_device(input);
+ if (error)
+ goto err_free_input_dev;
+
+ error = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
+ if (error) {
+ pr_err("Error reading power state\n");
+ goto err_unregister_input_dev;
+ }
+
+ pr_info("ACPI: %s [%s] (%s)\n",
+ acpi_device_name(device), acpi_device_bid(device),
+ !device->power.state ? "on" : "off");
+
+ fujitsu_hotkey->dev = device;
+
+ if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
+ vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
+ if (ACPI_FAILURE
+ (acpi_evaluate_object
+ (device->handle, METHOD_NAME__INI, NULL, NULL)))
+ pr_err("_INI Method failed\n");
+ }
+
+ i = 0;
+ while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
+ && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
+ ; /* No action, result is discarded */
+ vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
+
+ fujitsu_hotkey->rfkill_supported =
+ call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
+
+ /* Make sure our bitmask of supported functions is cleared if the
+ RFKILL function block is not implemented, like on the S7020. */
+ if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
+ fujitsu_hotkey->rfkill_supported = 0;
+
+ if (fujitsu_hotkey->rfkill_supported)
+ fujitsu_hotkey->rfkill_state =
+ call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
+
+ /* Suspect this is a keymap of the application panel, print it */
+ pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
+
+#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
+ if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
+ result = led_classdev_register(&fujitsu->pf_device->dev,
+ &logolamp_led);
+ if (result == 0) {
+ fujitsu_hotkey->logolamp_registered = 1;
+ } else {
+ pr_err("Could not register LED handler for logo lamp, error %i\n",
+ result);
+ }
+ }
+
+ if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
+ (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
+ result = led_classdev_register(&fujitsu->pf_device->dev,
+ &kblamps_led);
+ if (result == 0) {
+ fujitsu_hotkey->kblamps_registered = 1;
+ } else {
+ pr_err("Could not register LED handler for keyboard lamps, error %i\n",
+ result);
+ }
+ }
+#endif
+
+ return result;
+
+err_unregister_input_dev:
+ input_unregister_device(input);
+ input = NULL;
+err_free_input_dev:
+ input_free_device(input);
+err_free_fifo:
+ kfifo_free(&fujitsu_hotkey->fifo);
+err_stop:
+ return error;
+}
+
+static int acpi_fujitsu_hotkey_remove(struct acpi_device *device)
+{
+ struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device);
+ struct input_dev *input = fujitsu_hotkey->input;
+
+#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
+ if (fujitsu_hotkey->logolamp_registered)
+ led_classdev_unregister(&logolamp_led);
+
+ if (fujitsu_hotkey->kblamps_registered)
+ led_classdev_unregister(&kblamps_led);
+#endif
+
+ input_unregister_device(input);
+
+ kfifo_free(&fujitsu_hotkey->fifo);
+
+ fujitsu_hotkey->acpi_handle = NULL;
+
+ return 0;
+}
+
+static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
+{
+ struct input_dev *input;
+ int keycode, keycode_r;
+ unsigned int irb = 1;
+ int i, status;
+
+ input = fujitsu_hotkey->input;
+
+ if (fujitsu_hotkey->rfkill_supported)
+ fujitsu_hotkey->rfkill_state =
+ call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
+
+ switch (event) {
+ case ACPI_FUJITSU_NOTIFY_CODE1:
+ i = 0;
+ while ((irb =
+ call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
+ && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
+ switch (irb & 0x4ff) {
+ case KEY1_CODE:
+ keycode = fujitsu->keycode1;
+ break;
+ case KEY2_CODE:
+ keycode = fujitsu->keycode2;
+ break;
+ case KEY3_CODE:
+ keycode = fujitsu->keycode3;
+ break;
+ case KEY4_CODE:
+ keycode = fujitsu->keycode4;
+ break;
+ case 0:
+ keycode = 0;
+ break;
+ default:
+ vdbg_printk(FUJLAPTOP_DBG_WARN,
+ "Unknown GIRB result [%x]\n", irb);
+ keycode = -1;
+ break;
+ }
+ if (keycode > 0) {
+ vdbg_printk(FUJLAPTOP_DBG_TRACE,
+ "Push keycode into ringbuffer [%d]\n",
+ keycode);
+ status = kfifo_in_locked(&fujitsu_hotkey->fifo,
+ (unsigned char *)&keycode,
+ sizeof(keycode),
+ &fujitsu_hotkey->fifo_lock);
+ if (status != sizeof(keycode)) {
+ vdbg_printk(FUJLAPTOP_DBG_WARN,
+ "Could not push keycode [0x%x]\n",
+ keycode);
+ } else {
+ input_report_key(input, keycode, 1);
+ input_sync(input);
+ }
+ } else if (keycode == 0) {
+ while ((status =
+ kfifo_out_locked(
+ &fujitsu_hotkey->fifo,
+ (unsigned char *) &keycode_r,
+ sizeof(keycode_r),
+ &fujitsu_hotkey->fifo_lock))
+ == sizeof(keycode_r)) {
+ input_report_key(input, keycode_r, 0);
+ input_sync(input);
+ vdbg_printk(FUJLAPTOP_DBG_TRACE,
+ "Pop keycode from ringbuffer [%d]\n",
+ keycode_r);
+ }
+ }
+ }
+
+ break;
+ default:
+ keycode = KEY_UNKNOWN;
+ vdbg_printk(FUJLAPTOP_DBG_WARN,
+ "Unsupported event [0x%x]\n", event);
+ input_report_key(input, keycode, 1);
+ input_sync(input);
+ input_report_key(input, keycode, 0);
+ input_sync(input);
+ break;
+ }
+}
+
+/* Initialization */
+
+static const struct acpi_device_id fujitsu_device_ids[] = {
+ {ACPI_FUJITSU_HID, 0},
+ {"", 0},
+};
+
+static struct acpi_driver acpi_fujitsu_driver = {
+ .name = ACPI_FUJITSU_DRIVER_NAME,
+ .class = ACPI_FUJITSU_CLASS,
+ .ids = fujitsu_device_ids,
+ .ops = {
+ .add = acpi_fujitsu_add,
+ .remove = acpi_fujitsu_remove,
+ .notify = acpi_fujitsu_notify,
+ },
+};
+
+static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
+ {ACPI_FUJITSU_HOTKEY_HID, 0},
+ {"", 0},
+};
+
+static struct acpi_driver acpi_fujitsu_hotkey_driver = {
+ .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
+ .class = ACPI_FUJITSU_CLASS,
+ .ids = fujitsu_hotkey_device_ids,
+ .ops = {
+ .add = acpi_fujitsu_hotkey_add,
+ .remove = acpi_fujitsu_hotkey_remove,
+ .notify = acpi_fujitsu_hotkey_notify,
+ },
+};
+
+static const struct acpi_device_id fujitsu_ids[] __used = {
+ {ACPI_FUJITSU_HID, 0},
+ {ACPI_FUJITSU_HOTKEY_HID, 0},
+ {"", 0}
+};
+MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
+
+static int __init fujitsu_init(void)
+{
+ int ret, result, max_brightness;
+
+ if (acpi_disabled)
+ return -ENODEV;
+
+ fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
+ if (!fujitsu)
+ return -ENOMEM;
+ fujitsu->keycode1 = KEY_PROG1;
+ fujitsu->keycode2 = KEY_PROG2;
+ fujitsu->keycode3 = KEY_PROG3;
+ fujitsu->keycode4 = KEY_PROG4;
+ dmi_check_system(fujitsu_dmi_table);
+
+ result = acpi_bus_register_driver(&acpi_fujitsu_driver);
+ if (result < 0) {
+ ret = -ENODEV;
+ goto fail_acpi;
+ }
+
+ /* Register platform stuff */
+
+ fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
+ if (!fujitsu->pf_device) {
+ ret = -ENOMEM;
+ goto fail_platform_driver;
+ }
+
+ ret = platform_device_add(fujitsu->pf_device);
+ if (ret)
+ goto fail_platform_device1;
+
+ ret =
+ sysfs_create_group(&fujitsu->pf_device->dev.kobj,
+ &fujitsupf_attribute_group);
+ if (ret)
+ goto fail_platform_device2;
+
+ /* Register backlight stuff */
+
+ if (!acpi_video_backlight_support()) {
+ struct backlight_properties props;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ max_brightness = fujitsu->max_brightness;
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = max_brightness - 1;
+ fujitsu->bl_device = backlight_device_register("fujitsu-laptop",
+ NULL, NULL,
+ &fujitsubl_ops,
+ &props);
+ if (IS_ERR(fujitsu->bl_device)) {
+ ret = PTR_ERR(fujitsu->bl_device);
+ fujitsu->bl_device = NULL;
+ goto fail_sysfs_group;
+ }
+ fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
+ }
+
+ ret = platform_driver_register(&fujitsupf_driver);
+ if (ret)
+ goto fail_backlight;
+
+ /* Register hotkey driver */
+
+ fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
+ if (!fujitsu_hotkey) {
+ ret = -ENOMEM;
+ goto fail_hotkey;
+ }
+
+ result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
+ if (result < 0) {
+ ret = -ENODEV;
+ goto fail_hotkey1;
+ }
+
+ /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
+
+ if (!acpi_video_backlight_support()) {
+ if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
+ fujitsu->bl_device->props.power = FB_BLANK_POWERDOWN;
+ else
+ fujitsu->bl_device->props.power = FB_BLANK_UNBLANK;
+ }
+
+ pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
+
+ return 0;
+
+fail_hotkey1:
+ kfree(fujitsu_hotkey);
+fail_hotkey:
+ platform_driver_unregister(&fujitsupf_driver);
+fail_backlight:
+ backlight_device_unregister(fujitsu->bl_device);
+fail_sysfs_group:
+ sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
+ &fujitsupf_attribute_group);
+fail_platform_device2:
+ platform_device_del(fujitsu->pf_device);
+fail_platform_device1:
+ platform_device_put(fujitsu->pf_device);
+fail_platform_driver:
+ acpi_bus_unregister_driver(&acpi_fujitsu_driver);
+fail_acpi:
+ kfree(fujitsu);
+
+ return ret;
+}
+
+static void __exit fujitsu_cleanup(void)
+{
+ acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
+
+ kfree(fujitsu_hotkey);
+
+ platform_driver_unregister(&fujitsupf_driver);
+
+ backlight_device_unregister(fujitsu->bl_device);
+
+ sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
+ &fujitsupf_attribute_group);
+
+ platform_device_unregister(fujitsu->pf_device);
+
+ acpi_bus_unregister_driver(&acpi_fujitsu_driver);
+
+ kfree(fujitsu);
+
+ pr_info("driver unloaded\n");
+}
+
+module_init(fujitsu_init);
+module_exit(fujitsu_cleanup);
+
+module_param(use_alt_lcd_levels, uint, 0644);
+MODULE_PARM_DESC(use_alt_lcd_levels,
+ "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
+module_param(disable_brightness_adjust, uint, 0644);
+MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
+#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
+module_param_named(debug, dbg_level, uint, 0644);
+MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
+#endif
+
+MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
+MODULE_DESCRIPTION("Fujitsu laptop extras support");
+MODULE_VERSION(FUJITSU_DRIVER_VERSION);
+MODULE_LICENSE("GPL");
+
+MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
+MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
+MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
diff --git a/drivers/platform/x86/fujitsu-tablet.c b/drivers/platform/x86/fujitsu-tablet.c
new file mode 100644
index 000000000..baea077a0
--- /dev/null
+++ b/drivers/platform/x86/fujitsu-tablet.c
@@ -0,0 +1,554 @@
+/*
+ * Copyright (C) 2006-2012 Robert Gerlach <khnz@gmx.de>
+ * Copyright (C) 2005-2006 Jan Rychter <jan@rychter.com>
+ *
+ * You can redistribute and/or modify this program under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ * Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <linux/delay.h>
+#include <linux/dmi.h>
+
+#define MODULENAME "fujitsu-tablet"
+
+#define ACPI_FUJITSU_CLASS "fujitsu"
+
+#define INVERT_TABLET_MODE_BIT 0x01
+#define INVERT_DOCK_STATE_BIT 0x02
+#define FORCE_TABLET_MODE_IF_UNDOCK 0x04
+
+#define KEYMAP_LEN 16
+
+static const struct acpi_device_id fujitsu_ids[] = {
+ { .id = "FUJ02BD" },
+ { .id = "FUJ02BF" },
+ { .id = "" }
+};
+
+struct fujitsu_config {
+ unsigned short keymap[KEYMAP_LEN];
+ unsigned int quirks;
+};
+
+static unsigned short keymap_Lifebook_Tseries[KEYMAP_LEN] __initdata = {
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_SCROLLDOWN,
+ KEY_SCROLLUP,
+ KEY_ROTATE_DISPLAY,
+ KEY_LEFTCTRL,
+ KEY_BRIGHTNESSUP,
+ KEY_BRIGHTNESSDOWN,
+ KEY_BRIGHTNESS_ZERO,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_LEFTALT
+};
+
+static unsigned short keymap_Lifebook_T901[KEYMAP_LEN] __initdata = {
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_SCROLLDOWN,
+ KEY_SCROLLUP,
+ KEY_CYCLEWINDOWS,
+ KEY_LEFTCTRL,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_LEFTMETA
+};
+
+static unsigned short keymap_Lifebook_T902[KEYMAP_LEN] __initdata = {
+ KEY_RESERVED,
+ KEY_VOLUMEDOWN,
+ KEY_VOLUMEUP,
+ KEY_CYCLEWINDOWS,
+ KEY_PROG1,
+ KEY_PROG2,
+ KEY_LEFTMETA,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+};
+
+static unsigned short keymap_Lifebook_U810[KEYMAP_LEN] __initdata = {
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_PROG1,
+ KEY_PROG2,
+ KEY_ROTATE_DISPLAY,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_UP,
+ KEY_DOWN,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_LEFTCTRL,
+ KEY_LEFTALT
+};
+
+static unsigned short keymap_Stylistic_Tseries[KEYMAP_LEN] __initdata = {
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_PRINT,
+ KEY_BACKSPACE,
+ KEY_SPACE,
+ KEY_ENTER,
+ KEY_BRIGHTNESSUP,
+ KEY_BRIGHTNESSDOWN,
+ KEY_DOWN,
+ KEY_UP,
+ KEY_SCROLLUP,
+ KEY_SCROLLDOWN,
+ KEY_LEFTCTRL,
+ KEY_LEFTALT
+};
+
+static unsigned short keymap_Stylistic_ST5xxx[KEYMAP_LEN] __initdata = {
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_MAIL,
+ KEY_ROTATE_DISPLAY,
+ KEY_ESC,
+ KEY_ENTER,
+ KEY_BRIGHTNESSUP,
+ KEY_BRIGHTNESSDOWN,
+ KEY_DOWN,
+ KEY_UP,
+ KEY_SCROLLUP,
+ KEY_SCROLLDOWN,
+ KEY_LEFTCTRL,
+ KEY_LEFTALT
+};
+
+static struct {
+ struct input_dev *idev;
+ struct fujitsu_config config;
+ unsigned long prev_keymask;
+
+ char phys[21];
+
+ int irq;
+ int io_base;
+ int io_length;
+} fujitsu;
+
+static u8 fujitsu_ack(void)
+{
+ return inb(fujitsu.io_base + 2);
+}
+
+static u8 fujitsu_status(void)
+{
+ return inb(fujitsu.io_base + 6);
+}
+
+static u8 fujitsu_read_register(const u8 addr)
+{
+ outb(addr, fujitsu.io_base);
+ return inb(fujitsu.io_base + 4);
+}
+
+static void fujitsu_send_state(void)
+{
+ int state;
+ int dock, tablet_mode;
+
+ state = fujitsu_read_register(0xdd);
+
+ dock = state & 0x02;
+ if (fujitsu.config.quirks & INVERT_DOCK_STATE_BIT)
+ dock = !dock;
+
+ if ((fujitsu.config.quirks & FORCE_TABLET_MODE_IF_UNDOCK) && (!dock)) {
+ tablet_mode = 1;
+ } else{
+ tablet_mode = state & 0x01;
+ if (fujitsu.config.quirks & INVERT_TABLET_MODE_BIT)
+ tablet_mode = !tablet_mode;
+ }
+
+ input_report_switch(fujitsu.idev, SW_DOCK, dock);
+ input_report_switch(fujitsu.idev, SW_TABLET_MODE, tablet_mode);
+ input_sync(fujitsu.idev);
+}
+
+static void fujitsu_reset(void)
+{
+ int timeout = 50;
+
+ fujitsu_ack();
+
+ while ((fujitsu_status() & 0x02) && (--timeout))
+ msleep(20);
+
+ fujitsu_send_state();
+}
+
+static int input_fujitsu_setup(struct device *parent, const char *name,
+ const char *phys)
+{
+ struct input_dev *idev;
+ int error;
+ int i;
+
+ idev = input_allocate_device();
+ if (!idev)
+ return -ENOMEM;
+
+ idev->dev.parent = parent;
+ idev->phys = phys;
+ idev->name = name;
+ idev->id.bustype = BUS_HOST;
+ idev->id.vendor = 0x1734; /* Fujitsu Siemens Computer GmbH */
+ idev->id.product = 0x0001;
+ idev->id.version = 0x0101;
+
+ idev->keycode = fujitsu.config.keymap;
+ idev->keycodesize = sizeof(fujitsu.config.keymap[0]);
+ idev->keycodemax = ARRAY_SIZE(fujitsu.config.keymap);
+
+ __set_bit(EV_REP, idev->evbit);
+
+ for (i = 0; i < ARRAY_SIZE(fujitsu.config.keymap); i++)
+ if (fujitsu.config.keymap[i])
+ input_set_capability(idev, EV_KEY, fujitsu.config.keymap[i]);
+
+ input_set_capability(idev, EV_MSC, MSC_SCAN);
+
+ input_set_capability(idev, EV_SW, SW_DOCK);
+ input_set_capability(idev, EV_SW, SW_TABLET_MODE);
+
+ error = input_register_device(idev);
+ if (error) {
+ input_free_device(idev);
+ return error;
+ }
+
+ fujitsu.idev = idev;
+ return 0;
+}
+
+static void input_fujitsu_remove(void)
+{
+ input_unregister_device(fujitsu.idev);
+}
+
+static irqreturn_t fujitsu_interrupt(int irq, void *dev_id)
+{
+ unsigned long keymask, changed;
+ unsigned int keycode;
+ int pressed;
+ int i;
+
+ if (unlikely(!(fujitsu_status() & 0x01)))
+ return IRQ_NONE;
+
+ fujitsu_send_state();
+
+ keymask = fujitsu_read_register(0xde);
+ keymask |= fujitsu_read_register(0xdf) << 8;
+ keymask ^= 0xffff;
+
+ changed = keymask ^ fujitsu.prev_keymask;
+ if (changed) {
+ fujitsu.prev_keymask = keymask;
+
+ for_each_set_bit(i, &changed, KEYMAP_LEN) {
+ keycode = fujitsu.config.keymap[i];
+ pressed = keymask & changed & BIT(i);
+
+ if (pressed)
+ input_event(fujitsu.idev, EV_MSC, MSC_SCAN, i);
+
+ input_report_key(fujitsu.idev, keycode, pressed);
+ input_sync(fujitsu.idev);
+ }
+ }
+
+ fujitsu_ack();
+ return IRQ_HANDLED;
+}
+
+static void __init fujitsu_dmi_common(const struct dmi_system_id *dmi)
+{
+ pr_info("%s\n", dmi->ident);
+ memcpy(fujitsu.config.keymap, dmi->driver_data,
+ sizeof(fujitsu.config.keymap));
+}
+
+static int __init fujitsu_dmi_lifebook(const struct dmi_system_id *dmi)
+{
+ fujitsu_dmi_common(dmi);
+ fujitsu.config.quirks |= INVERT_TABLET_MODE_BIT;
+ return 1;
+}
+
+static int __init fujitsu_dmi_stylistic(const struct dmi_system_id *dmi)
+{
+ fujitsu_dmi_common(dmi);
+ fujitsu.config.quirks |= FORCE_TABLET_MODE_IF_UNDOCK;
+ fujitsu.config.quirks |= INVERT_DOCK_STATE_BIT;
+ return 1;
+}
+
+static const struct dmi_system_id dmi_ids[] __initconst = {
+ {
+ .callback = fujitsu_dmi_lifebook,
+ .ident = "Fujitsu Lifebook T901",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook T901")
+ },
+ .driver_data = keymap_Lifebook_T901
+ },
+ {
+ .callback = fujitsu_dmi_lifebook,
+ .ident = "Fujitsu Lifebook T901",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK T901")
+ },
+ .driver_data = keymap_Lifebook_T901
+ },
+ {
+ .callback = fujitsu_dmi_lifebook,
+ .ident = "Fujitsu Lifebook T902",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK T902")
+ },
+ .driver_data = keymap_Lifebook_T902
+ },
+ {
+ .callback = fujitsu_dmi_lifebook,
+ .ident = "Fujitsu Siemens P/T Series",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK")
+ },
+ .driver_data = keymap_Lifebook_Tseries
+ },
+ {
+ .callback = fujitsu_dmi_lifebook,
+ .ident = "Fujitsu Lifebook T Series",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook T")
+ },
+ .driver_data = keymap_Lifebook_Tseries
+ },
+ {
+ .callback = fujitsu_dmi_stylistic,
+ .ident = "Fujitsu Siemens Stylistic T Series",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Stylistic T")
+ },
+ .driver_data = keymap_Stylistic_Tseries
+ },
+ {
+ .callback = fujitsu_dmi_lifebook,
+ .ident = "Fujitsu LifeBook U810",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook U810")
+ },
+ .driver_data = keymap_Lifebook_U810
+ },
+ {
+ .callback = fujitsu_dmi_stylistic,
+ .ident = "Fujitsu Siemens Stylistic ST5xxx Series",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "STYLISTIC ST5")
+ },
+ .driver_data = keymap_Stylistic_ST5xxx
+ },
+ {
+ .callback = fujitsu_dmi_stylistic,
+ .ident = "Fujitsu Siemens Stylistic ST5xxx Series",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Stylistic ST5")
+ },
+ .driver_data = keymap_Stylistic_ST5xxx
+ },
+ {
+ .callback = fujitsu_dmi_lifebook,
+ .ident = "Unknown (using defaults)",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, ""),
+ DMI_MATCH(DMI_PRODUCT_NAME, "")
+ },
+ .driver_data = keymap_Lifebook_Tseries
+ },
+ { NULL }
+};
+
+static acpi_status fujitsu_walk_resources(struct acpi_resource *res, void *data)
+{
+ switch (res->type) {
+ case ACPI_RESOURCE_TYPE_IRQ:
+ fujitsu.irq = res->data.irq.interrupts[0];
+ return AE_OK;
+
+ case ACPI_RESOURCE_TYPE_IO:
+ fujitsu.io_base = res->data.io.minimum;
+ fujitsu.io_length = res->data.io.address_length;
+ return AE_OK;
+
+ case ACPI_RESOURCE_TYPE_END_TAG:
+ if (fujitsu.irq && fujitsu.io_base)
+ return AE_OK;
+ else
+ return AE_NOT_FOUND;
+
+ default:
+ return AE_ERROR;
+ }
+}
+
+static int acpi_fujitsu_add(struct acpi_device *adev)
+{
+ acpi_status status;
+ int error;
+
+ if (!adev)
+ return -EINVAL;
+
+ status = acpi_walk_resources(adev->handle, METHOD_NAME__CRS,
+ fujitsu_walk_resources, NULL);
+ if (ACPI_FAILURE(status) || !fujitsu.irq || !fujitsu.io_base)
+ return -ENODEV;
+
+ sprintf(acpi_device_name(adev), "Fujitsu %s", acpi_device_hid(adev));
+ sprintf(acpi_device_class(adev), "%s", ACPI_FUJITSU_CLASS);
+
+ snprintf(fujitsu.phys, sizeof(fujitsu.phys),
+ "%s/input0", acpi_device_hid(adev));
+
+ error = input_fujitsu_setup(&adev->dev,
+ acpi_device_name(adev), fujitsu.phys);
+ if (error)
+ return error;
+
+ if (!request_region(fujitsu.io_base, fujitsu.io_length, MODULENAME)) {
+ input_fujitsu_remove();
+ return -EBUSY;
+ }
+
+ fujitsu_reset();
+
+ error = request_irq(fujitsu.irq, fujitsu_interrupt,
+ IRQF_SHARED, MODULENAME, fujitsu_interrupt);
+ if (error) {
+ release_region(fujitsu.io_base, fujitsu.io_length);
+ input_fujitsu_remove();
+ return error;
+ }
+
+ return 0;
+}
+
+static int acpi_fujitsu_remove(struct acpi_device *adev)
+{
+ free_irq(fujitsu.irq, fujitsu_interrupt);
+ release_region(fujitsu.io_base, fujitsu.io_length);
+ input_fujitsu_remove();
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int acpi_fujitsu_resume(struct device *dev)
+{
+ fujitsu_reset();
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(acpi_fujitsu_pm, NULL, acpi_fujitsu_resume);
+
+static struct acpi_driver acpi_fujitsu_driver = {
+ .name = MODULENAME,
+ .class = "hotkey",
+ .ids = fujitsu_ids,
+ .ops = {
+ .add = acpi_fujitsu_add,
+ .remove = acpi_fujitsu_remove,
+ },
+ .drv.pm = &acpi_fujitsu_pm,
+};
+
+static int __init fujitsu_module_init(void)
+{
+ int error;
+
+ dmi_check_system(dmi_ids);
+
+ error = acpi_bus_register_driver(&acpi_fujitsu_driver);
+ if (error)
+ return error;
+
+ return 0;
+}
+
+static void __exit fujitsu_module_exit(void)
+{
+ acpi_bus_unregister_driver(&acpi_fujitsu_driver);
+}
+
+module_init(fujitsu_module_init);
+module_exit(fujitsu_module_exit);
+
+MODULE_AUTHOR("Robert Gerlach <khnz@gmx.de>");
+MODULE_DESCRIPTION("Fujitsu tablet pc extras driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("2.5");
+
+MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
diff --git a/drivers/platform/x86/hdaps.c b/drivers/platform/x86/hdaps.c
new file mode 100644
index 000000000..1dae4c557
--- /dev/null
+++ b/drivers/platform/x86/hdaps.c
@@ -0,0 +1,893 @@
+/*
+ * hdaps.c - driver for IBM's Hard Drive Active Protection System
+ *
+ * Copyright (C) 2005 Robert Love <rml@novell.com>
+ * Copyright (C) 2005 Jesper Juhl <jj@chaosbits.net>
+ *
+ * The HardDisk Active Protection System (hdaps) is present in IBM ThinkPads
+ * starting with the R40, T41, and X40. It provides a basic two-axis
+ * accelerometer and other data, such as the device's temperature.
+ *
+ * This driver is based on the document by Mark A. Smith available at
+ * http://www.almaden.ibm.com/cs/people/marksmith/tpaps.html and a lot of trial
+ * and error.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License v2 as published by the
+ * Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/timer.h>
+#include <linux/dmi.h>
+#include <linux/jiffies.h>
+#include <linux/thinkpad_ec.h>
+#include <linux/pci_ids.h>
+#include <linux/version.h>
+
+/* Embedded controller accelerometer read command and its result: */
+static const struct thinkpad_ec_row ec_accel_args =
+ { .mask = 0x0001, .val = {0x11} };
+#define EC_ACCEL_IDX_READOUTS 0x1 /* readouts included in this read */
+ /* First readout, if READOUTS>=1: */
+#define EC_ACCEL_IDX_YPOS1 0x2 /* y-axis position word */
+#define EC_ACCEL_IDX_XPOS1 0x4 /* x-axis position word */
+#define EC_ACCEL_IDX_TEMP1 0x6 /* device temperature in Celsius */
+ /* Second readout, if READOUTS>=2: */
+#define EC_ACCEL_IDX_XPOS2 0x7 /* y-axis position word */
+#define EC_ACCEL_IDX_YPOS2 0x9 /* x-axis position word */
+#define EC_ACCEL_IDX_TEMP2 0xb /* device temperature in Celsius */
+#define EC_ACCEL_IDX_QUEUED 0xc /* Number of queued readouts left */
+#define EC_ACCEL_IDX_KMACT 0xd /* keyboard or mouse activity */
+#define EC_ACCEL_IDX_RETVAL 0xf /* command return value, good=0x00 */
+
+#define KEYBD_MASK 0x20 /* set if keyboard activity */
+#define MOUSE_MASK 0x40 /* set if mouse activity */
+
+#define READ_TIMEOUT_MSECS 100 /* wait this long for device read */
+#define RETRY_MSECS 3 /* retry delay */
+
+#define HDAPS_INPUT_FUZZ 4 /* input event threshold */
+#define HDAPS_INPUT_FLAT 4
+#define KMACT_REMEMBER_PERIOD (HZ/10) /* keyboard/mouse persistance */
+
+/* Input IDs */
+#define HDAPS_INPUT_VENDOR PCI_VENDOR_ID_IBM
+#define HDAPS_INPUT_PRODUCT 0x5054 /* "TP", shared with thinkpad_acpi */
+#define HDAPS_INPUT_JS_VERSION 0x6801 /* Joystick emulation input device */
+#define HDAPS_INPUT_RAW_VERSION 0x4801 /* Raw accelerometer input device */
+
+/* Axis orientation. */
+/* The unnatural bit-representation of inversions is for backward
+ * compatibility with the"invert=1" module parameter. */
+#define HDAPS_ORIENT_INVERT_XY 0x01 /* Invert both X and Y axes. */
+#define HDAPS_ORIENT_INVERT_X 0x02 /* Invert the X axis (uninvert if
+ * already inverted by INVERT_XY). */
+#define HDAPS_ORIENT_SWAP 0x04 /* Swap the axes. The swap occurs
+ * before inverting X or Y. */
+#define HDAPS_ORIENT_MAX 0x07
+#define HDAPS_ORIENT_UNDEFINED 0xFF /* Placeholder during initialization */
+#define HDAPS_ORIENT_INVERT_Y (HDAPS_ORIENT_INVERT_XY | HDAPS_ORIENT_INVERT_X)
+
+static struct timer_list hdaps_timer;
+static struct platform_device *pdev;
+static struct input_dev *hdaps_idev; /* joystick-like device with fuzz */
+static struct input_dev *hdaps_idev_raw; /* raw hdaps sensor readouts */
+static unsigned int hdaps_invert = HDAPS_ORIENT_UNDEFINED;
+static int needs_calibration;
+
+/* Configuration: */
+static int sampling_rate = 50; /* Sampling rate */
+static int oversampling_ratio = 5; /* Ratio between our sampling rate and
+ * EC accelerometer sampling rate */
+static int running_avg_filter_order = 2; /* EC running average filter order */
+
+/* Latest state readout: */
+static int pos_x, pos_y; /* position */
+static int temperature; /* temperature */
+static int stale_readout = 1; /* last read invalid */
+static int rest_x, rest_y; /* calibrated rest position */
+
+/* Last time we saw keyboard and mouse activity: */
+static u64 last_keyboard_jiffies = INITIAL_JIFFIES;
+static u64 last_mouse_jiffies = INITIAL_JIFFIES;
+static u64 last_update_jiffies = INITIAL_JIFFIES;
+
+/* input device use count */
+static int hdaps_users;
+static DEFINE_MUTEX(hdaps_users_mtx);
+
+/* Some models require an axis transformation to the standard representation */
+static void transform_axes(int *x, int *y)
+{
+ if (hdaps_invert & HDAPS_ORIENT_SWAP) {
+ int z;
+ z = *x;
+ *x = *y;
+ *y = z;
+ }
+ if (hdaps_invert & HDAPS_ORIENT_INVERT_XY) {
+ *x = -*x;
+ *y = -*y;
+ }
+ if (hdaps_invert & HDAPS_ORIENT_INVERT_X)
+ *x = -*x;
+}
+
+/**
+ * __hdaps_update - query current state, with locks already acquired
+ * @fast: if nonzero, do one quick attempt without retries.
+ *
+ * Query current accelerometer state and update global state variables.
+ * Also prefetches the next query. Caller must hold controller lock.
+ */
+static int __hdaps_update(int fast)
+{
+ /* Read data: */
+ struct thinkpad_ec_row data;
+ int ret;
+
+ data.mask = (1 << EC_ACCEL_IDX_READOUTS) | (1 << EC_ACCEL_IDX_KMACT) |
+ (3 << EC_ACCEL_IDX_YPOS1) | (3 << EC_ACCEL_IDX_XPOS1) |
+ (1 << EC_ACCEL_IDX_TEMP1) | (1 << EC_ACCEL_IDX_RETVAL);
+ if (fast)
+ ret = thinkpad_ec_try_read_row(&ec_accel_args, &data);
+ else
+ ret = thinkpad_ec_read_row(&ec_accel_args, &data);
+ thinkpad_ec_prefetch_row(&ec_accel_args); /* Prefetch even if error */
+ if (ret)
+ return ret;
+
+ /* Check status: */
+ if (data.val[EC_ACCEL_IDX_RETVAL] != 0x00) {
+ pr_warn("read RETVAL=0x%02x\n",
+ data.val[EC_ACCEL_IDX_RETVAL]);
+ return -EIO;
+ }
+
+ if (data.val[EC_ACCEL_IDX_READOUTS] < 1)
+ return -EBUSY; /* no pending readout, try again later */
+
+ /* Parse position data: */
+ pos_x = *(s16 *)(data.val+EC_ACCEL_IDX_XPOS1);
+ pos_y = *(s16 *)(data.val+EC_ACCEL_IDX_YPOS1);
+ transform_axes(&pos_x, &pos_y);
+
+ /* Keyboard and mouse activity status is cleared as soon as it's read,
+ * so applications will eat each other's events. Thus we remember any
+ * event for KMACT_REMEMBER_PERIOD jiffies.
+ */
+ if (data.val[EC_ACCEL_IDX_KMACT] & KEYBD_MASK)
+ last_keyboard_jiffies = get_jiffies_64();
+ if (data.val[EC_ACCEL_IDX_KMACT] & MOUSE_MASK)
+ last_mouse_jiffies = get_jiffies_64();
+
+ temperature = data.val[EC_ACCEL_IDX_TEMP1];
+
+ last_update_jiffies = get_jiffies_64();
+ stale_readout = 0;
+ if (needs_calibration) {
+ rest_x = pos_x;
+ rest_y = pos_y;
+ needs_calibration = 0;
+ }
+
+ return 0;
+}
+
+/**
+ * hdaps_update - acquire locks and query current state
+ *
+ * Query current accelerometer state and update global state variables.
+ * Also prefetches the next query.
+ * Retries until timeout if the accelerometer is not in ready status (common).
+ * Does its own locking.
+ */
+static int hdaps_update(void)
+{
+ u64 age = get_jiffies_64() - last_update_jiffies;
+ int total, ret;
+
+ if (!stale_readout && age < (9*HZ)/(10*sampling_rate))
+ return 0; /* already updated recently */
+ for (total = 0; total < READ_TIMEOUT_MSECS; total += RETRY_MSECS) {
+ ret = thinkpad_ec_lock();
+ if (ret)
+ return ret;
+ ret = __hdaps_update(0);
+ thinkpad_ec_unlock();
+
+ if (!ret)
+ return 0;
+ if (ret != -EBUSY)
+ break;
+ msleep(RETRY_MSECS);
+ }
+ return ret;
+}
+
+/**
+ * hdaps_set_power - enable or disable power to the accelerometer.
+ * Returns zero on success and negative error code on failure. Can sleep.
+ */
+static int hdaps_set_power(int on)
+{
+ struct thinkpad_ec_row args =
+ { .mask = 0x0003, .val = {0x14, on?0x01:0x00} };
+ struct thinkpad_ec_row data = { .mask = 0x8000 };
+ int ret = thinkpad_ec_read_row(&args, &data);
+ if (ret)
+ return ret;
+ if (data.val[0xF] != 0x00)
+ return -EIO;
+ return 0;
+}
+
+/**
+ * hdaps_set_ec_config - set accelerometer parameters.
+ * @ec_rate: embedded controller sampling rate
+ * @order: embedded controller running average filter order
+ * (Normally we have @ec_rate = sampling_rate * oversampling_ratio.)
+ * Returns zero on success and negative error code on failure. Can sleep.
+ */
+static int hdaps_set_ec_config(int ec_rate, int order)
+{
+ struct thinkpad_ec_row args = { .mask = 0x000F,
+ .val = {0x10, (u8)ec_rate, (u8)(ec_rate>>8), order} };
+ struct thinkpad_ec_row data = { .mask = 0x8000 };
+ int ret = thinkpad_ec_read_row(&args, &data);
+ pr_debug("setting ec_rate=%d, filter_order=%d\n", ec_rate, order);
+ if (ret)
+ return ret;
+ if (data.val[0xF] == 0x03) {
+ pr_warn("config param out of range\n");
+ return -EINVAL;
+ }
+ if (data.val[0xF] == 0x06) {
+ pr_warn("config change already pending\n");
+ return -EBUSY;
+ }
+ if (data.val[0xF] != 0x00) {
+ pr_warn("config change error, ret=%d\n",
+ data.val[0xF]);
+ return -EIO;
+ }
+ return 0;
+}
+
+/**
+ * hdaps_get_ec_config - get accelerometer parameters.
+ * @ec_rate: embedded controller sampling rate
+ * @order: embedded controller running average filter order
+ * Returns zero on success and negative error code on failure. Can sleep.
+ */
+static int hdaps_get_ec_config(int *ec_rate, int *order)
+{
+ const struct thinkpad_ec_row args =
+ { .mask = 0x0003, .val = {0x17, 0x82} };
+ struct thinkpad_ec_row data = { .mask = 0x801F };
+ int ret = thinkpad_ec_read_row(&args, &data);
+ if (ret)
+ return ret;
+ if (data.val[0xF] != 0x00)
+ return -EIO;
+ if (!(data.val[0x1] & 0x01))
+ return -ENXIO; /* accelerometer polling not enabled */
+ if (data.val[0x1] & 0x02)
+ return -EBUSY; /* config change in progress, retry later */
+ *ec_rate = data.val[0x2] | ((int)(data.val[0x3]) << 8);
+ *order = data.val[0x4];
+ return 0;
+}
+
+/**
+ * hdaps_get_ec_mode - get EC accelerometer mode
+ * Returns zero on success and negative error code on failure. Can sleep.
+ */
+static int hdaps_get_ec_mode(u8 *mode)
+{
+ const struct thinkpad_ec_row args =
+ { .mask = 0x0001, .val = {0x13} };
+ struct thinkpad_ec_row data = { .mask = 0x8002 };
+ int ret = thinkpad_ec_read_row(&args, &data);
+ if (ret)
+ return ret;
+ if (data.val[0xF] != 0x00) {
+ pr_warn("accelerometer not implemented (0x%02x)\n",
+ data.val[0xF]);
+ return -EIO;
+ }
+ *mode = data.val[0x1];
+ return 0;
+}
+
+/**
+ * hdaps_check_ec - checks something about the EC.
+ * Follows the clean-room spec for HDAPS; we don't know what it means.
+ * Returns zero on success and negative error code on failure. Can sleep.
+ */
+static int hdaps_check_ec(void)
+{
+ const struct thinkpad_ec_row args =
+ { .mask = 0x0003, .val = {0x17, 0x81} };
+ struct thinkpad_ec_row data = { .mask = 0x800E };
+ int ret = thinkpad_ec_read_row(&args, &data);
+ if (ret)
+ return ret;
+ if (!((data.val[0x1] == 0x00 && data.val[0x2] == 0x60) || /* cleanroom spec */
+ (data.val[0x1] == 0x01 && data.val[0x2] == 0x00)) || /* seen on T61 */
+ data.val[0x3] != 0x00 || data.val[0xF] != 0x00) {
+ pr_warn("hdaps_check_ec: bad response (0x%x,0x%x,0x%x,0x%x)\n",
+ data.val[0x1], data.val[0x2],
+ data.val[0x3], data.val[0xF]);
+ return -EIO;
+ }
+ return 0;
+}
+
+/**
+ * hdaps_device_init - initialize the accelerometer.
+ *
+ * Call several embedded controller functions to test and initialize the
+ * accelerometer.
+ * Returns zero on success and negative error code on failure. Can sleep.
+ */
+#define FAILED_INIT(msg) pr_err("init failed at: %s\n", msg)
+static int hdaps_device_init(void)
+{
+ int ret;
+ u8 mode;
+
+ ret = thinkpad_ec_lock();
+ if (ret)
+ return ret;
+
+ if (hdaps_get_ec_mode(&mode))
+ { FAILED_INIT("hdaps_get_ec_mode failed"); goto bad; }
+
+ pr_debug("initial mode latch is 0x%02x\n", mode);
+ if (mode == 0x00)
+ { FAILED_INIT("accelerometer not available"); goto bad; }
+
+ if (hdaps_check_ec())
+ { FAILED_INIT("hdaps_check_ec failed"); goto bad; }
+
+ if (hdaps_set_power(1))
+ { FAILED_INIT("hdaps_set_power failed"); goto bad; }
+
+ if (hdaps_set_ec_config(sampling_rate*oversampling_ratio,
+ running_avg_filter_order))
+ { FAILED_INIT("hdaps_set_ec_config failed"); goto bad; }
+
+ thinkpad_ec_invalidate();
+ udelay(200);
+
+ /* Just prefetch instead of reading, to avoid ~1sec delay on load */
+ ret = thinkpad_ec_prefetch_row(&ec_accel_args);
+ if (ret)
+ { FAILED_INIT("initial prefetch failed"); goto bad; }
+ goto good;
+bad:
+ thinkpad_ec_invalidate();
+ ret = -ENXIO;
+good:
+ stale_readout = 1;
+ thinkpad_ec_unlock();
+ return ret;
+}
+
+/**
+ * hdaps_device_shutdown - power off the accelerometer
+ * Returns nonzero on failure. Can sleep.
+ */
+static int hdaps_device_shutdown(void)
+{
+ int ret;
+ ret = hdaps_set_power(0);
+ if (ret) {
+ pr_warn("cannot power off\n");
+ return ret;
+ }
+ ret = hdaps_set_ec_config(0, 1);
+ if (ret)
+ pr_warn("cannot stop EC sampling\n");
+ return ret;
+}
+
+/* Device model stuff */
+
+static int hdaps_probe(struct platform_device *dev)
+{
+ int ret;
+
+ ret = hdaps_device_init();
+ if (ret)
+ return ret;
+
+ pr_info("device successfully initialized\n");
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int hdaps_suspend(struct device *dev)
+{
+ /* Don't do hdaps polls until resume re-initializes the sensor. */
+ del_timer_sync(&hdaps_timer);
+ hdaps_device_shutdown(); /* ignore errors, effect is negligible */
+ return 0;
+}
+
+static int hdaps_resume(struct device *dev)
+{
+ int ret = hdaps_device_init();
+ if (ret)
+ return ret;
+
+ mutex_lock(&hdaps_users_mtx);
+ if (hdaps_users)
+ mod_timer(&hdaps_timer, jiffies + HZ/sampling_rate);
+ mutex_unlock(&hdaps_users_mtx);
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(hdaps_pm, hdaps_suspend, hdaps_resume);
+
+static struct platform_driver hdaps_driver = {
+ .probe = hdaps_probe,
+ .driver = {
+ .name = "hdaps",
+ .pm = &hdaps_pm,
+ },
+};
+
+/**
+ * hdaps_calibrate - set our "resting" values.
+ * Does its own locking.
+ */
+static void hdaps_calibrate(void)
+{
+ needs_calibration = 1;
+ hdaps_update();
+ /* If that fails, the mousedev poll will take care of things later. */
+}
+
+/* Timer handler for updating the input device. Runs in softirq context,
+ * so avoid lenghty or blocking operations.
+ */
+static void hdaps_mousedev_poll(unsigned long unused)
+{
+ int ret;
+
+ stale_readout = 1;
+
+ /* Cannot sleep. Try nonblockingly. If we fail, try again later. */
+ if (thinkpad_ec_try_lock())
+ goto keep_active;
+
+ ret = __hdaps_update(1); /* fast update, we're in softirq context */
+ thinkpad_ec_unlock();
+ /* Any of "successful", "not yet ready" and "not prefetched"? */
+ if (ret != 0 && ret != -EBUSY && ret != -ENODATA) {
+ pr_err("poll failed, disabling updates\n");
+ return;
+ }
+
+keep_active:
+ /* Even if we failed now, pos_x,y may have been updated earlier: */
+ input_report_abs(hdaps_idev, ABS_X, pos_x - rest_x);
+ input_report_abs(hdaps_idev, ABS_Y, pos_y - rest_y);
+ input_sync(hdaps_idev);
+ input_report_abs(hdaps_idev_raw, ABS_X, pos_x);
+ input_report_abs(hdaps_idev_raw, ABS_Y, pos_y);
+ input_sync(hdaps_idev_raw);
+ mod_timer(&hdaps_timer, jiffies + HZ/sampling_rate);
+}
+
+
+/* Sysfs Files */
+
+static ssize_t hdaps_position_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret = hdaps_update();
+ if (ret)
+ return ret;
+ return sprintf(buf, "(%d,%d)\n", pos_x, pos_y);
+}
+
+static ssize_t hdaps_temp1_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret = hdaps_update();
+ if (ret)
+ return ret;
+ return sprintf(buf, "%d\n", temperature);
+}
+
+static ssize_t hdaps_keyboard_activity_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int ret = hdaps_update();
+ if (ret)
+ return ret;
+ return sprintf(buf, "%u\n",
+ get_jiffies_64() < last_keyboard_jiffies + KMACT_REMEMBER_PERIOD);
+}
+
+static ssize_t hdaps_mouse_activity_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int ret = hdaps_update();
+ if (ret)
+ return ret;
+ return sprintf(buf, "%u\n",
+ get_jiffies_64() < last_mouse_jiffies + KMACT_REMEMBER_PERIOD);
+}
+
+static ssize_t hdaps_calibrate_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "(%d,%d)\n", rest_x, rest_y);
+}
+
+static ssize_t hdaps_calibrate_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ hdaps_calibrate();
+ return count;
+}
+
+static ssize_t hdaps_invert_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%u\n", hdaps_invert);
+}
+
+static ssize_t hdaps_invert_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int invert;
+
+ if (sscanf(buf, "%d", &invert) != 1 ||
+ invert < 0 || invert > HDAPS_ORIENT_MAX)
+ return -EINVAL;
+
+ hdaps_invert = invert;
+ hdaps_calibrate();
+
+ return count;
+}
+
+static ssize_t hdaps_sampling_rate_show(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", sampling_rate);
+}
+
+static ssize_t hdaps_sampling_rate_store(
+ struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int rate, ret;
+ if (sscanf(buf, "%d", &rate) != 1 || rate > HZ || rate <= 0) {
+ pr_warn("must have 0<input_sampling_rate<=HZ=%d\n", HZ);
+ return -EINVAL;
+ }
+ ret = hdaps_set_ec_config(rate*oversampling_ratio,
+ running_avg_filter_order);
+ if (ret)
+ return ret;
+ sampling_rate = rate;
+ return count;
+}
+
+static ssize_t hdaps_oversampling_ratio_show(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int ec_rate, order;
+ int ret = hdaps_get_ec_config(&ec_rate, &order);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%u\n", ec_rate / sampling_rate);
+}
+
+static ssize_t hdaps_oversampling_ratio_store(
+ struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ratio, ret;
+ if (sscanf(buf, "%d", &ratio) != 1 || ratio < 1)
+ return -EINVAL;
+ ret = hdaps_set_ec_config(sampling_rate*ratio,
+ running_avg_filter_order);
+ if (ret)
+ return ret;
+ oversampling_ratio = ratio;
+ return count;
+}
+
+static ssize_t hdaps_running_avg_filter_order_show(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int rate, order;
+ int ret = hdaps_get_ec_config(&rate, &order);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%u\n", order);
+}
+
+static ssize_t hdaps_running_avg_filter_order_store(
+ struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int order, ret;
+ if (sscanf(buf, "%d", &order) != 1)
+ return -EINVAL;
+ ret = hdaps_set_ec_config(sampling_rate*oversampling_ratio, order);
+ if (ret)
+ return ret;
+ running_avg_filter_order = order;
+ return count;
+}
+
+static int hdaps_mousedev_open(struct input_dev *dev)
+{
+ if (!try_module_get(THIS_MODULE))
+ return -ENODEV;
+
+ mutex_lock(&hdaps_users_mtx);
+ if (hdaps_users++ == 0) /* first input user */
+ mod_timer(&hdaps_timer, jiffies + HZ/sampling_rate);
+ mutex_unlock(&hdaps_users_mtx);
+ return 0;
+}
+
+static void hdaps_mousedev_close(struct input_dev *dev)
+{
+ mutex_lock(&hdaps_users_mtx);
+ if (--hdaps_users == 0) /* no input users left */
+ del_timer_sync(&hdaps_timer);
+ mutex_unlock(&hdaps_users_mtx);
+
+ module_put(THIS_MODULE);
+}
+
+static DEVICE_ATTR(position, 0444, hdaps_position_show, NULL);
+static DEVICE_ATTR(temp1, 0444, hdaps_temp1_show, NULL);
+ /* "temp1" instead of "temperature" is hwmon convention */
+static DEVICE_ATTR(keyboard_activity, 0444,
+ hdaps_keyboard_activity_show, NULL);
+static DEVICE_ATTR(mouse_activity, 0444, hdaps_mouse_activity_show, NULL);
+static DEVICE_ATTR(calibrate, 0644,
+ hdaps_calibrate_show, hdaps_calibrate_store);
+static DEVICE_ATTR(invert, 0644, hdaps_invert_show, hdaps_invert_store);
+static DEVICE_ATTR(sampling_rate, 0644,
+ hdaps_sampling_rate_show, hdaps_sampling_rate_store);
+static DEVICE_ATTR(oversampling_ratio, 0644,
+ hdaps_oversampling_ratio_show,
+ hdaps_oversampling_ratio_store);
+static DEVICE_ATTR(running_avg_filter_order, 0644,
+ hdaps_running_avg_filter_order_show,
+ hdaps_running_avg_filter_order_store);
+
+static struct attribute *hdaps_attributes[] = {
+ &dev_attr_position.attr,
+ &dev_attr_temp1.attr,
+ &dev_attr_keyboard_activity.attr,
+ &dev_attr_mouse_activity.attr,
+ &dev_attr_calibrate.attr,
+ &dev_attr_invert.attr,
+ &dev_attr_sampling_rate.attr,
+ &dev_attr_oversampling_ratio.attr,
+ &dev_attr_running_avg_filter_order.attr,
+ NULL,
+};
+
+static struct attribute_group hdaps_attribute_group = {
+ .attrs = hdaps_attributes,
+};
+
+
+/* Module stuff */
+
+/* hdaps_dmi_match_invert - found an inverted match. */
+static int __init hdaps_dmi_match_invert(const struct dmi_system_id *id)
+{
+ unsigned int orient = (kernel_ulong_t) id->driver_data;
+ hdaps_invert = orient;
+ pr_info("%s detected, setting orientation %u\n", id->ident, orient);
+ return 1; /* stop enumeration */
+}
+
+#define HDAPS_DMI_MATCH_INVERT(vendor, model, orient) { \
+ .ident = vendor " " model, \
+ .callback = hdaps_dmi_match_invert, \
+ .driver_data = (void *)(orient), \
+ .matches = { \
+ DMI_MATCH(DMI_BOARD_VENDOR, vendor), \
+ DMI_MATCH(DMI_PRODUCT_VERSION, model) \
+ } \
+}
+
+/* List of models with abnormal axis configuration.
+ Note that HDAPS_DMI_MATCH_NORMAL("ThinkPad T42") would match
+ "ThinkPad T42p", and enumeration stops after first match,
+ so the order of the entries matters. */
+struct dmi_system_id __initdata hdaps_whitelist[] = {
+ HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad R50p", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad R60", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad T41p", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad T42p", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad X40", HDAPS_ORIENT_INVERT_Y),
+ HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad X41", HDAPS_ORIENT_INVERT_Y),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R60", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R61", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R400", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R500", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T60", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T61", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X60 Tablet", HDAPS_ORIENT_INVERT_Y),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X60s", HDAPS_ORIENT_INVERT_Y),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X60", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X61", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T400s", HDAPS_ORIENT_INVERT_X),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T400", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T410s", HDAPS_ORIENT_SWAP),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T410", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T500", HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T510", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X | HDAPS_ORIENT_INVERT_Y),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad W51O", HDAPS_ORIENT_MAX),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X200s", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X200", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X | HDAPS_ORIENT_INVERT_Y),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X201 Tablet", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X201s", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_XY),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X201", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X),
+ HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X220", HDAPS_ORIENT_SWAP),
+ { .ident = NULL }
+};
+
+static int __init hdaps_init(void)
+{
+ int ret;
+
+ /* Determine axis orientation orientation */
+ if (hdaps_invert == HDAPS_ORIENT_UNDEFINED) /* set by module param? */
+ if (dmi_check_system(hdaps_whitelist) < 1) /* in whitelist? */
+ hdaps_invert = 0; /* default */
+
+ /* Init timer before platform_driver_register, in case of suspend */
+ init_timer(&hdaps_timer);
+ hdaps_timer.function = hdaps_mousedev_poll;
+ ret = platform_driver_register(&hdaps_driver);
+ if (ret)
+ goto out;
+
+ pdev = platform_device_register_simple("hdaps", -1, NULL, 0);
+ if (IS_ERR(pdev)) {
+ ret = PTR_ERR(pdev);
+ goto out_driver;
+ }
+
+ ret = sysfs_create_group(&pdev->dev.kobj, &hdaps_attribute_group);
+ if (ret)
+ goto out_device;
+
+ hdaps_idev = input_allocate_device();
+ if (!hdaps_idev) {
+ ret = -ENOMEM;
+ goto out_group;
+ }
+
+ hdaps_idev_raw = input_allocate_device();
+ if (!hdaps_idev_raw) {
+ ret = -ENOMEM;
+ goto out_idev_first;
+ }
+
+ /* calibration for the input device (deferred to avoid delay) */
+ needs_calibration = 1;
+
+ /* initialize the joystick-like fuzzed input device */
+ hdaps_idev->name = "ThinkPad HDAPS joystick emulation";
+ hdaps_idev->phys = "hdaps/input0";
+ hdaps_idev->id.bustype = BUS_HOST;
+ hdaps_idev->id.vendor = HDAPS_INPUT_VENDOR;
+ hdaps_idev->id.product = HDAPS_INPUT_PRODUCT;
+ hdaps_idev->id.version = HDAPS_INPUT_JS_VERSION;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
+ hdaps_idev->cdev.dev = &pdev->dev;
+#endif
+ hdaps_idev->evbit[0] = BIT(EV_ABS);
+ hdaps_idev->open = hdaps_mousedev_open;
+ hdaps_idev->close = hdaps_mousedev_close;
+ input_set_abs_params(hdaps_idev, ABS_X,
+ -256, 256, HDAPS_INPUT_FUZZ, HDAPS_INPUT_FLAT);
+ input_set_abs_params(hdaps_idev, ABS_Y,
+ -256, 256, HDAPS_INPUT_FUZZ, HDAPS_INPUT_FLAT);
+
+ ret = input_register_device(hdaps_idev);
+ if (ret)
+ goto out_idev;
+
+ /* initialize the raw data input device */
+ hdaps_idev_raw->name = "ThinkPad HDAPS accelerometer data";
+ hdaps_idev_raw->phys = "hdaps/input1";
+ hdaps_idev_raw->id.bustype = BUS_HOST;
+ hdaps_idev_raw->id.vendor = HDAPS_INPUT_VENDOR;
+ hdaps_idev_raw->id.product = HDAPS_INPUT_PRODUCT;
+ hdaps_idev_raw->id.version = HDAPS_INPUT_RAW_VERSION;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
+ hdaps_idev_raw->cdev.dev = &pdev->dev;
+#endif
+ hdaps_idev_raw->evbit[0] = BIT(EV_ABS);
+ hdaps_idev_raw->open = hdaps_mousedev_open;
+ hdaps_idev_raw->close = hdaps_mousedev_close;
+ input_set_abs_params(hdaps_idev_raw, ABS_X, -32768, 32767, 0, 0);
+ input_set_abs_params(hdaps_idev_raw, ABS_Y, -32768, 32767, 0, 0);
+
+ ret = input_register_device(hdaps_idev_raw);
+ if (ret)
+ goto out_idev_reg_first;
+
+ pr_info("driver successfully loaded.\n");
+ return 0;
+
+out_idev_reg_first:
+ input_unregister_device(hdaps_idev);
+out_idev:
+ input_free_device(hdaps_idev_raw);
+out_idev_first:
+ input_free_device(hdaps_idev);
+out_group:
+ sysfs_remove_group(&pdev->dev.kobj, &hdaps_attribute_group);
+out_device:
+ platform_device_unregister(pdev);
+out_driver:
+ platform_driver_unregister(&hdaps_driver);
+ hdaps_device_shutdown();
+out:
+ pr_warn("driver init failed (ret=%d)!\n", ret);
+ return ret;
+}
+
+static void __exit hdaps_exit(void)
+{
+ input_unregister_device(hdaps_idev_raw);
+ input_unregister_device(hdaps_idev);
+ hdaps_device_shutdown(); /* ignore errors, effect is negligible */
+ sysfs_remove_group(&pdev->dev.kobj, &hdaps_attribute_group);
+ platform_device_unregister(pdev);
+ platform_driver_unregister(&hdaps_driver);
+
+ pr_info("driver unloaded\n");
+}
+
+module_init(hdaps_init);
+module_exit(hdaps_exit);
+
+module_param_named(invert, hdaps_invert, uint, 0);
+MODULE_PARM_DESC(invert, "axis orientation code");
+
+MODULE_AUTHOR("Robert Love");
+MODULE_DESCRIPTION("IBM Hard Drive Active Protection System (HDAPS) driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/platform/x86/hp-wireless.c b/drivers/platform/x86/hp-wireless.c
new file mode 100644
index 000000000..4e4cc8bd7
--- /dev/null
+++ b/drivers/platform/x86/hp-wireless.c
@@ -0,0 +1,135 @@
+/*
+ * hp-wireless button for Windows 8
+ *
+ * Copyright (C) 2014 Alex Hung <alex.hung@canonical.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <linux/acpi.h>
+#include <acpi/acpi_bus.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alex Hung");
+MODULE_ALIAS("acpi*:HPQ6001:*");
+
+static struct input_dev *hpwl_input_dev;
+
+static const struct acpi_device_id hpwl_ids[] = {
+ {"HPQ6001", 0},
+ {"", 0},
+};
+
+static int hp_wireless_input_setup(void)
+{
+ int err;
+
+ hpwl_input_dev = input_allocate_device();
+ if (!hpwl_input_dev)
+ return -ENOMEM;
+
+ hpwl_input_dev->name = "HP Wireless hotkeys";
+ hpwl_input_dev->phys = "hpq6001/input0";
+ hpwl_input_dev->id.bustype = BUS_HOST;
+ hpwl_input_dev->evbit[0] = BIT(EV_KEY);
+ set_bit(KEY_RFKILL, hpwl_input_dev->keybit);
+
+ err = input_register_device(hpwl_input_dev);
+ if (err)
+ goto err_free_dev;
+
+ return 0;
+
+err_free_dev:
+ input_free_device(hpwl_input_dev);
+ return err;
+}
+
+static void hp_wireless_input_destroy(void)
+{
+ input_unregister_device(hpwl_input_dev);
+}
+
+static void hpwl_notify(struct acpi_device *acpi_dev, u32 event)
+{
+ if (event != 0x80) {
+ pr_info("Received unknown event (0x%x)\n", event);
+ return;
+ }
+
+ input_report_key(hpwl_input_dev, KEY_RFKILL, 1);
+ input_sync(hpwl_input_dev);
+ input_report_key(hpwl_input_dev, KEY_RFKILL, 0);
+ input_sync(hpwl_input_dev);
+}
+
+static int hpwl_add(struct acpi_device *device)
+{
+ int err;
+
+ err = hp_wireless_input_setup();
+ if (err)
+ pr_err("Failed to setup hp wireless hotkeys\n");
+
+ return err;
+}
+
+static int hpwl_remove(struct acpi_device *device)
+{
+ hp_wireless_input_destroy();
+ return 0;
+}
+
+static struct acpi_driver hpwl_driver = {
+ .name = "hp-wireless",
+ .owner = THIS_MODULE,
+ .ids = hpwl_ids,
+ .ops = {
+ .add = hpwl_add,
+ .remove = hpwl_remove,
+ .notify = hpwl_notify,
+ },
+};
+
+static int __init hpwl_init(void)
+{
+ int err;
+
+ pr_info("Initializing HPQ6001 module\n");
+ err = acpi_bus_register_driver(&hpwl_driver);
+ if (err) {
+ pr_err("Unable to register HP wireless control driver.\n");
+ goto error_acpi_register;
+ }
+
+ return 0;
+
+error_acpi_register:
+ return err;
+}
+
+static void __exit hpwl_exit(void)
+{
+ pr_info("Exiting HPQ6001 module\n");
+ acpi_bus_unregister_driver(&hpwl_driver);
+}
+
+module_init(hpwl_init);
+module_exit(hpwl_exit);
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
new file mode 100644
index 000000000..06697315a
--- /dev/null
+++ b/drivers/platform/x86/hp-wmi.c
@@ -0,0 +1,1064 @@
+/*
+ * HP WMI hotkeys
+ *
+ * Copyright (C) 2008 Red Hat <mjg@redhat.com>
+ * Copyright (C) 2010, 2011 Anssi Hannula <anssi.hannula@iki.fi>
+ *
+ * Portions based on wistron_btns.c:
+ * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
+ * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
+ * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/platform_device.h>
+#include <linux/acpi.h>
+#include <linux/rfkill.h>
+#include <linux/string.h>
+
+MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
+MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
+MODULE_LICENSE("GPL");
+
+MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
+MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
+
+#define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
+#define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
+
+#define HPWMI_DISPLAY_QUERY 0x1
+#define HPWMI_HDDTEMP_QUERY 0x2
+#define HPWMI_ALS_QUERY 0x3
+#define HPWMI_HARDWARE_QUERY 0x4
+#define HPWMI_WIRELESS_QUERY 0x5
+#define HPWMI_BIOS_QUERY 0x9
+#define HPWMI_HOTKEY_QUERY 0xc
+#define HPWMI_FEATURE_QUERY 0xd
+#define HPWMI_WIRELESS2_QUERY 0x1b
+#define HPWMI_POSTCODEERROR_QUERY 0x2a
+
+enum hp_wmi_radio {
+ HPWMI_WIFI = 0,
+ HPWMI_BLUETOOTH = 1,
+ HPWMI_WWAN = 2,
+ HPWMI_GPS = 3,
+};
+
+enum hp_wmi_event_ids {
+ HPWMI_DOCK_EVENT = 1,
+ HPWMI_PARK_HDD = 2,
+ HPWMI_SMART_ADAPTER = 3,
+ HPWMI_BEZEL_BUTTON = 4,
+ HPWMI_WIRELESS = 5,
+ HPWMI_CPU_BATTERY_THROTTLE = 6,
+ HPWMI_LOCK_SWITCH = 7,
+ HPWMI_LID_SWITCH = 8,
+ HPWMI_SCREEN_ROTATION = 9,
+ HPWMI_COOLSENSE_SYSTEM_MOBILE = 0x0A,
+ HPWMI_COOLSENSE_SYSTEM_HOT = 0x0B,
+ HPWMI_PROXIMITY_SENSOR = 0x0C,
+ HPWMI_BACKLIT_KB_BRIGHTNESS = 0x0D,
+ HPWMI_PEAKSHIFT_PERIOD = 0x0F,
+ HPWMI_BATTERY_CHARGE_PERIOD = 0x10,
+};
+
+struct bios_args {
+ u32 signature;
+ u32 command;
+ u32 commandtype;
+ u32 datasize;
+ u32 data;
+};
+
+struct bios_return {
+ u32 sigpass;
+ u32 return_code;
+};
+
+enum hp_return_value {
+ HPWMI_RET_WRONG_SIGNATURE = 0x02,
+ HPWMI_RET_UNKNOWN_COMMAND = 0x03,
+ HPWMI_RET_UNKNOWN_CMDTYPE = 0x04,
+ HPWMI_RET_INVALID_PARAMETERS = 0x05,
+};
+
+enum hp_wireless2_bits {
+ HPWMI_POWER_STATE = 0x01,
+ HPWMI_POWER_SOFT = 0x02,
+ HPWMI_POWER_BIOS = 0x04,
+ HPWMI_POWER_HARD = 0x08,
+};
+
+#define IS_HWBLOCKED(x) ((x & (HPWMI_POWER_BIOS | HPWMI_POWER_HARD)) \
+ != (HPWMI_POWER_BIOS | HPWMI_POWER_HARD))
+#define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
+
+struct bios_rfkill2_device_state {
+ u8 radio_type;
+ u8 bus_type;
+ u16 vendor_id;
+ u16 product_id;
+ u16 subsys_vendor_id;
+ u16 subsys_product_id;
+ u8 rfkill_id;
+ u8 power;
+ u8 unknown[4];
+};
+
+/* 7 devices fit into the 128 byte buffer */
+#define HPWMI_MAX_RFKILL2_DEVICES 7
+
+struct bios_rfkill2_state {
+ u8 unknown[7];
+ u8 count;
+ u8 pad[8];
+ struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES];
+};
+
+static const struct key_entry hp_wmi_keymap[] = {
+ { KE_KEY, 0x02, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, 0x03, { KEY_BRIGHTNESSDOWN } },
+ { KE_KEY, 0x20e6, { KEY_PROG1 } },
+ { KE_KEY, 0x20e8, { KEY_MEDIA } },
+ { KE_KEY, 0x2142, { KEY_MEDIA } },
+ { KE_KEY, 0x213b, { KEY_INFO } },
+ { KE_KEY, 0x2169, { KEY_ROTATE_DISPLAY } },
+ { KE_KEY, 0x216a, { KEY_SETUP } },
+ { KE_KEY, 0x231b, { KEY_HELP } },
+ { KE_END, 0 }
+};
+
+static struct input_dev *hp_wmi_input_dev;
+static struct platform_device *hp_wmi_platform_dev;
+
+static struct rfkill *wifi_rfkill;
+static struct rfkill *bluetooth_rfkill;
+static struct rfkill *wwan_rfkill;
+static struct rfkill *gps_rfkill;
+
+struct rfkill2_device {
+ u8 id;
+ int num;
+ struct rfkill *rfkill;
+};
+
+static int rfkill2_count;
+static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
+
+/*
+ * hp_wmi_perform_query
+ *
+ * query: The commandtype -> What should be queried
+ * write: The command -> 0 read, 1 write, 3 ODM specific
+ * buffer: Buffer used as input and/or output
+ * insize: Size of input buffer
+ * outsize: Size of output buffer
+ *
+ * returns zero on success
+ * an HP WMI query specific error code (which is positive)
+ * -EINVAL if the query was not successful at all
+ * -EINVAL if the output buffer size exceeds buffersize
+ *
+ * Note: The buffersize must at least be the maximum of the input and output
+ * size. E.g. Battery info query (0x7) is defined to have 1 byte input
+ * and 128 byte output. The caller would do:
+ * buffer = kzalloc(128, GFP_KERNEL);
+ * ret = hp_wmi_perform_query(0x7, 0, buffer, 1, 128)
+ */
+static int hp_wmi_perform_query(int query, int write, void *buffer,
+ int insize, int outsize)
+{
+ struct bios_return *bios_return;
+ int actual_outsize;
+ union acpi_object *obj;
+ struct bios_args args = {
+ .signature = 0x55434553,
+ .command = write ? 0x2 : 0x1,
+ .commandtype = query,
+ .datasize = insize,
+ .data = 0,
+ };
+ struct acpi_buffer input = { sizeof(struct bios_args), &args };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ u32 rc;
+
+ if (WARN_ON(insize > sizeof(args.data)))
+ return -EINVAL;
+ memcpy(&args.data, buffer, insize);
+
+ wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
+
+ obj = output.pointer;
+
+ if (!obj)
+ return -EINVAL;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return -EINVAL;
+ }
+
+ bios_return = (struct bios_return *)obj->buffer.pointer;
+ rc = bios_return->return_code;
+
+ if (rc) {
+ if (rc != HPWMI_RET_UNKNOWN_CMDTYPE)
+ pr_warn("query 0x%x returned error 0x%x\n", query, rc);
+ kfree(obj);
+ return rc;
+ }
+
+ if (!outsize) {
+ /* ignore output data */
+ kfree(obj);
+ return 0;
+ }
+
+ actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
+ memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
+ memset(buffer + actual_outsize, 0, outsize - actual_outsize);
+ kfree(obj);
+ return 0;
+}
+
+static int hp_wmi_display_state(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+ return -EINVAL;
+ return state;
+}
+
+static int hp_wmi_hddtemp_state(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+ return -EINVAL;
+ return state;
+}
+
+static int hp_wmi_als_state(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+ return -EINVAL;
+ return state;
+}
+
+static int hp_wmi_dock_state(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+
+ if (ret)
+ return -EINVAL;
+
+ return state & 0x1;
+}
+
+static int hp_wmi_tablet_state(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+ return ret;
+
+ return (state & 0x4) ? 1 : 0;
+}
+
+static int __init hp_wmi_bios_2009_later(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_FEATURE_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+ return ret;
+
+ return (state & 0x10) ? 1 : 0;
+}
+
+static int hp_wmi_enable_hotkeys(void)
+{
+ int ret;
+ int query = 0x6e;
+
+ ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, 1, &query, sizeof(query),
+ 0);
+
+ if (ret)
+ return -EINVAL;
+ return 0;
+}
+
+static int hp_wmi_set_block(void *data, bool blocked)
+{
+ enum hp_wmi_radio r = (enum hp_wmi_radio) data;
+ int query = BIT(r + 8) | ((!blocked) << r);
+ int ret;
+
+ ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
+ &query, sizeof(query), 0);
+ if (ret)
+ return -EINVAL;
+ return 0;
+}
+
+static const struct rfkill_ops hp_wmi_rfkill_ops = {
+ .set_block = hp_wmi_set_block,
+};
+
+static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
+{
+ int wireless = 0;
+ int mask;
+ hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
+ &wireless, sizeof(wireless),
+ sizeof(wireless));
+ /* TBD: Pass error */
+
+ mask = 0x200 << (r * 8);
+
+ if (wireless & mask)
+ return false;
+ else
+ return true;
+}
+
+static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
+{
+ int wireless = 0;
+ int mask;
+ hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
+ &wireless, sizeof(wireless),
+ sizeof(wireless));
+ /* TBD: Pass error */
+
+ mask = 0x800 << (r * 8);
+
+ if (wireless & mask)
+ return false;
+ else
+ return true;
+}
+
+static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
+{
+ int rfkill_id = (int)(long)data;
+ char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
+
+ if (hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 1,
+ buffer, sizeof(buffer), 0))
+ return -EINVAL;
+ return 0;
+}
+
+static const struct rfkill_ops hp_wmi_rfkill2_ops = {
+ .set_block = hp_wmi_rfkill2_set_block,
+};
+
+static int hp_wmi_rfkill2_refresh(void)
+{
+ int err, i;
+ struct bios_rfkill2_state state;
+
+ err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
+ 0, sizeof(state));
+ if (err)
+ return err;
+
+ for (i = 0; i < rfkill2_count; i++) {
+ int num = rfkill2[i].num;
+ struct bios_rfkill2_device_state *devstate;
+ devstate = &state.device[num];
+
+ if (num >= state.count ||
+ devstate->rfkill_id != rfkill2[i].id) {
+ pr_warn("power configuration of the wireless devices unexpectedly changed\n");
+ continue;
+ }
+
+ rfkill_set_states(rfkill2[i].rfkill,
+ IS_SWBLOCKED(devstate->power),
+ IS_HWBLOCKED(devstate->power));
+ }
+
+ return 0;
+}
+
+static int hp_wmi_post_code_state(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+ return -EINVAL;
+ return state;
+}
+
+static ssize_t show_display(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int value = hp_wmi_display_state();
+ if (value < 0)
+ return -EINVAL;
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int value = hp_wmi_hddtemp_state();
+ if (value < 0)
+ return -EINVAL;
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t show_als(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int value = hp_wmi_als_state();
+ if (value < 0)
+ return -EINVAL;
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int value = hp_wmi_dock_state();
+ if (value < 0)
+ return -EINVAL;
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int value = hp_wmi_tablet_state();
+ if (value < 0)
+ return -EINVAL;
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t show_postcode(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ /* Get the POST error code of previous boot failure. */
+ int value = hp_wmi_post_code_state();
+ if (value < 0)
+ return -EINVAL;
+ return sprintf(buf, "0x%x\n", value);
+}
+
+static ssize_t set_als(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ u32 tmp = simple_strtoul(buf, NULL, 10);
+ int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
+ sizeof(tmp), sizeof(tmp));
+ if (ret)
+ return -EINVAL;
+
+ return count;
+}
+
+static ssize_t set_postcode(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ret;
+ u32 tmp;
+ long unsigned int tmp2;
+
+ ret = kstrtoul(buf, 10, &tmp2);
+ if (ret || tmp2 != 1)
+ return -EINVAL;
+
+ /* Clear the POST error code. It is kept until until cleared. */
+ tmp = (u32) tmp2;
+ ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, 1, &tmp,
+ sizeof(tmp), sizeof(tmp));
+ if (ret)
+ return -EINVAL;
+
+ return count;
+}
+
+static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
+static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
+static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
+static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
+static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
+static DEVICE_ATTR(postcode, S_IRUGO | S_IWUSR, show_postcode, set_postcode);
+
+static void hp_wmi_notify(u32 value, void *context)
+{
+ struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ u32 event_id, event_data;
+ int key_code = 0, ret;
+ u32 *location;
+ acpi_status status;
+
+ status = wmi_get_event_data(value, &response);
+ if (status != AE_OK) {
+ pr_info("bad event status 0x%x\n", status);
+ return;
+ }
+
+ obj = (union acpi_object *)response.pointer;
+
+ if (!obj)
+ return;
+ if (obj->type != ACPI_TYPE_BUFFER) {
+ pr_info("Unknown response received %d\n", obj->type);
+ kfree(obj);
+ return;
+ }
+
+ /*
+ * Depending on ACPI version the concatenation of id and event data
+ * inside _WED function will result in a 8 or 16 byte buffer.
+ */
+ location = (u32 *)obj->buffer.pointer;
+ if (obj->buffer.length == 8) {
+ event_id = *location;
+ event_data = *(location + 1);
+ } else if (obj->buffer.length == 16) {
+ event_id = *location;
+ event_data = *(location + 2);
+ } else {
+ pr_info("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return;
+ }
+ kfree(obj);
+
+ switch (event_id) {
+ case HPWMI_DOCK_EVENT:
+ input_report_switch(hp_wmi_input_dev, SW_DOCK,
+ hp_wmi_dock_state());
+ input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+ hp_wmi_tablet_state());
+ input_sync(hp_wmi_input_dev);
+ break;
+ case HPWMI_PARK_HDD:
+ break;
+ case HPWMI_SMART_ADAPTER:
+ break;
+ case HPWMI_BEZEL_BUTTON:
+ ret = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
+ &key_code,
+ sizeof(key_code),
+ sizeof(key_code));
+ if (ret)
+ break;
+
+ if (!sparse_keymap_report_event(hp_wmi_input_dev,
+ key_code, 1, true))
+ pr_info("Unknown key code - 0x%x\n", key_code);
+ break;
+ case HPWMI_WIRELESS:
+ if (rfkill2_count) {
+ hp_wmi_rfkill2_refresh();
+ break;
+ }
+
+ if (wifi_rfkill)
+ rfkill_set_states(wifi_rfkill,
+ hp_wmi_get_sw_state(HPWMI_WIFI),
+ hp_wmi_get_hw_state(HPWMI_WIFI));
+ if (bluetooth_rfkill)
+ rfkill_set_states(bluetooth_rfkill,
+ hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
+ hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
+ if (wwan_rfkill)
+ rfkill_set_states(wwan_rfkill,
+ hp_wmi_get_sw_state(HPWMI_WWAN),
+ hp_wmi_get_hw_state(HPWMI_WWAN));
+ if (gps_rfkill)
+ rfkill_set_states(gps_rfkill,
+ hp_wmi_get_sw_state(HPWMI_GPS),
+ hp_wmi_get_hw_state(HPWMI_GPS));
+ break;
+ case HPWMI_CPU_BATTERY_THROTTLE:
+ pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
+ break;
+ case HPWMI_LOCK_SWITCH:
+ break;
+ case HPWMI_LID_SWITCH:
+ break;
+ case HPWMI_SCREEN_ROTATION:
+ break;
+ case HPWMI_COOLSENSE_SYSTEM_MOBILE:
+ break;
+ case HPWMI_COOLSENSE_SYSTEM_HOT:
+ break;
+ case HPWMI_PROXIMITY_SENSOR:
+ break;
+ case HPWMI_BACKLIT_KB_BRIGHTNESS:
+ break;
+ case HPWMI_PEAKSHIFT_PERIOD:
+ break;
+ case HPWMI_BATTERY_CHARGE_PERIOD:
+ break;
+ default:
+ pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
+ break;
+ }
+}
+
+static int __init hp_wmi_input_setup(void)
+{
+ acpi_status status;
+ int err;
+
+ hp_wmi_input_dev = input_allocate_device();
+ if (!hp_wmi_input_dev)
+ return -ENOMEM;
+
+ hp_wmi_input_dev->name = "HP WMI hotkeys";
+ hp_wmi_input_dev->phys = "wmi/input0";
+ hp_wmi_input_dev->id.bustype = BUS_HOST;
+
+ __set_bit(EV_SW, hp_wmi_input_dev->evbit);
+ __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
+ __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
+
+ err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
+ if (err)
+ goto err_free_dev;
+
+ /* Set initial hardware state */
+ input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
+ input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+ hp_wmi_tablet_state());
+ input_sync(hp_wmi_input_dev);
+
+ if (hp_wmi_bios_2009_later() == 4)
+ hp_wmi_enable_hotkeys();
+
+ status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
+ if (ACPI_FAILURE(status)) {
+ err = -EIO;
+ goto err_free_keymap;
+ }
+
+ err = input_register_device(hp_wmi_input_dev);
+ if (err)
+ goto err_uninstall_notifier;
+
+ return 0;
+
+ err_uninstall_notifier:
+ wmi_remove_notify_handler(HPWMI_EVENT_GUID);
+ err_free_keymap:
+ sparse_keymap_free(hp_wmi_input_dev);
+ err_free_dev:
+ input_free_device(hp_wmi_input_dev);
+ return err;
+}
+
+static void hp_wmi_input_destroy(void)
+{
+ wmi_remove_notify_handler(HPWMI_EVENT_GUID);
+ sparse_keymap_free(hp_wmi_input_dev);
+ input_unregister_device(hp_wmi_input_dev);
+}
+
+static void cleanup_sysfs(struct platform_device *device)
+{
+ device_remove_file(&device->dev, &dev_attr_display);
+ device_remove_file(&device->dev, &dev_attr_hddtemp);
+ device_remove_file(&device->dev, &dev_attr_als);
+ device_remove_file(&device->dev, &dev_attr_dock);
+ device_remove_file(&device->dev, &dev_attr_tablet);
+ device_remove_file(&device->dev, &dev_attr_postcode);
+}
+
+static int __init hp_wmi_rfkill_setup(struct platform_device *device)
+{
+ int err;
+ int wireless = 0;
+
+ err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, &wireless,
+ sizeof(wireless), sizeof(wireless));
+ if (err)
+ return err;
+
+ if (wireless & 0x1) {
+ wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
+ RFKILL_TYPE_WLAN,
+ &hp_wmi_rfkill_ops,
+ (void *) HPWMI_WIFI);
+ if (!wifi_rfkill)
+ return -ENOMEM;
+ rfkill_init_sw_state(wifi_rfkill,
+ hp_wmi_get_sw_state(HPWMI_WIFI));
+ rfkill_set_hw_state(wifi_rfkill,
+ hp_wmi_get_hw_state(HPWMI_WIFI));
+ err = rfkill_register(wifi_rfkill);
+ if (err)
+ goto register_wifi_error;
+ }
+
+ if (wireless & 0x2) {
+ bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
+ RFKILL_TYPE_BLUETOOTH,
+ &hp_wmi_rfkill_ops,
+ (void *) HPWMI_BLUETOOTH);
+ if (!bluetooth_rfkill) {
+ err = -ENOMEM;
+ goto register_wifi_error;
+ }
+ rfkill_init_sw_state(bluetooth_rfkill,
+ hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
+ rfkill_set_hw_state(bluetooth_rfkill,
+ hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
+ err = rfkill_register(bluetooth_rfkill);
+ if (err)
+ goto register_bluetooth_error;
+ }
+
+ if (wireless & 0x4) {
+ wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
+ RFKILL_TYPE_WWAN,
+ &hp_wmi_rfkill_ops,
+ (void *) HPWMI_WWAN);
+ if (!wwan_rfkill) {
+ err = -ENOMEM;
+ goto register_bluetooth_error;
+ }
+ rfkill_init_sw_state(wwan_rfkill,
+ hp_wmi_get_sw_state(HPWMI_WWAN));
+ rfkill_set_hw_state(wwan_rfkill,
+ hp_wmi_get_hw_state(HPWMI_WWAN));
+ err = rfkill_register(wwan_rfkill);
+ if (err)
+ goto register_wwan_error;
+ }
+
+ if (wireless & 0x8) {
+ gps_rfkill = rfkill_alloc("hp-gps", &device->dev,
+ RFKILL_TYPE_GPS,
+ &hp_wmi_rfkill_ops,
+ (void *) HPWMI_GPS);
+ if (!gps_rfkill) {
+ err = -ENOMEM;
+ goto register_wwan_error;
+ }
+ rfkill_init_sw_state(gps_rfkill,
+ hp_wmi_get_sw_state(HPWMI_GPS));
+ rfkill_set_hw_state(gps_rfkill,
+ hp_wmi_get_hw_state(HPWMI_GPS));
+ err = rfkill_register(gps_rfkill);
+ if (err)
+ goto register_gps_error;
+ }
+
+ return 0;
+register_gps_error:
+ rfkill_destroy(gps_rfkill);
+ gps_rfkill = NULL;
+ if (bluetooth_rfkill)
+ rfkill_unregister(bluetooth_rfkill);
+register_wwan_error:
+ rfkill_destroy(wwan_rfkill);
+ wwan_rfkill = NULL;
+ if (gps_rfkill)
+ rfkill_unregister(gps_rfkill);
+register_bluetooth_error:
+ rfkill_destroy(bluetooth_rfkill);
+ bluetooth_rfkill = NULL;
+ if (wifi_rfkill)
+ rfkill_unregister(wifi_rfkill);
+register_wifi_error:
+ rfkill_destroy(wifi_rfkill);
+ wifi_rfkill = NULL;
+ return err;
+}
+
+static int __init hp_wmi_rfkill2_setup(struct platform_device *device)
+{
+ int err, i;
+ struct bios_rfkill2_state state;
+ err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
+ 0, sizeof(state));
+ if (err)
+ return err;
+
+ if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
+ pr_warn("unable to parse 0x1b query output\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < state.count; i++) {
+ struct rfkill *rfkill;
+ enum rfkill_type type;
+ char *name;
+ switch (state.device[i].radio_type) {
+ case HPWMI_WIFI:
+ type = RFKILL_TYPE_WLAN;
+ name = "hp-wifi";
+ break;
+ case HPWMI_BLUETOOTH:
+ type = RFKILL_TYPE_BLUETOOTH;
+ name = "hp-bluetooth";
+ break;
+ case HPWMI_WWAN:
+ type = RFKILL_TYPE_WWAN;
+ name = "hp-wwan";
+ break;
+ case HPWMI_GPS:
+ type = RFKILL_TYPE_GPS;
+ name = "hp-gps";
+ break;
+ default:
+ pr_warn("unknown device type 0x%x\n",
+ state.device[i].radio_type);
+ continue;
+ }
+
+ if (!state.device[i].vendor_id) {
+ pr_warn("zero device %d while %d reported\n",
+ i, state.count);
+ continue;
+ }
+
+ rfkill = rfkill_alloc(name, &device->dev, type,
+ &hp_wmi_rfkill2_ops, (void *)(long)i);
+ if (!rfkill) {
+ err = -ENOMEM;
+ goto fail;
+ }
+
+ rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
+ rfkill2[rfkill2_count].num = i;
+ rfkill2[rfkill2_count].rfkill = rfkill;
+
+ rfkill_init_sw_state(rfkill,
+ IS_SWBLOCKED(state.device[i].power));
+ rfkill_set_hw_state(rfkill,
+ IS_HWBLOCKED(state.device[i].power));
+
+ if (!(state.device[i].power & HPWMI_POWER_BIOS))
+ pr_info("device %s blocked by BIOS\n", name);
+
+ err = rfkill_register(rfkill);
+ if (err) {
+ rfkill_destroy(rfkill);
+ goto fail;
+ }
+
+ rfkill2_count++;
+ }
+
+ return 0;
+fail:
+ for (; rfkill2_count > 0; rfkill2_count--) {
+ rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
+ rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
+ }
+ return err;
+}
+
+static int __init hp_wmi_bios_setup(struct platform_device *device)
+{
+ int err;
+
+ /* clear detected rfkill devices */
+ wifi_rfkill = NULL;
+ bluetooth_rfkill = NULL;
+ wwan_rfkill = NULL;
+ gps_rfkill = NULL;
+ rfkill2_count = 0;
+
+ if (hp_wmi_bios_2009_later() || hp_wmi_rfkill_setup(device))
+ hp_wmi_rfkill2_setup(device);
+
+ err = device_create_file(&device->dev, &dev_attr_display);
+ if (err)
+ goto add_sysfs_error;
+ err = device_create_file(&device->dev, &dev_attr_hddtemp);
+ if (err)
+ goto add_sysfs_error;
+ err = device_create_file(&device->dev, &dev_attr_als);
+ if (err)
+ goto add_sysfs_error;
+ err = device_create_file(&device->dev, &dev_attr_dock);
+ if (err)
+ goto add_sysfs_error;
+ err = device_create_file(&device->dev, &dev_attr_tablet);
+ if (err)
+ goto add_sysfs_error;
+ err = device_create_file(&device->dev, &dev_attr_postcode);
+ if (err)
+ goto add_sysfs_error;
+ return 0;
+
+add_sysfs_error:
+ cleanup_sysfs(device);
+ return err;
+}
+
+static int __exit hp_wmi_bios_remove(struct platform_device *device)
+{
+ int i;
+ cleanup_sysfs(device);
+
+ for (i = 0; i < rfkill2_count; i++) {
+ rfkill_unregister(rfkill2[i].rfkill);
+ rfkill_destroy(rfkill2[i].rfkill);
+ }
+
+ if (wifi_rfkill) {
+ rfkill_unregister(wifi_rfkill);
+ rfkill_destroy(wifi_rfkill);
+ }
+ if (bluetooth_rfkill) {
+ rfkill_unregister(bluetooth_rfkill);
+ rfkill_destroy(bluetooth_rfkill);
+ }
+ if (wwan_rfkill) {
+ rfkill_unregister(wwan_rfkill);
+ rfkill_destroy(wwan_rfkill);
+ }
+ if (gps_rfkill) {
+ rfkill_unregister(gps_rfkill);
+ rfkill_destroy(gps_rfkill);
+ }
+
+ return 0;
+}
+
+static int hp_wmi_resume_handler(struct device *device)
+{
+ /*
+ * Hardware state may have changed while suspended, so trigger
+ * input events for the current state. As this is a switch,
+ * the input layer will only actually pass it on if the state
+ * changed.
+ */
+ if (hp_wmi_input_dev) {
+ input_report_switch(hp_wmi_input_dev, SW_DOCK,
+ hp_wmi_dock_state());
+ input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+ hp_wmi_tablet_state());
+ input_sync(hp_wmi_input_dev);
+ }
+
+ if (rfkill2_count)
+ hp_wmi_rfkill2_refresh();
+
+ if (wifi_rfkill)
+ rfkill_set_states(wifi_rfkill,
+ hp_wmi_get_sw_state(HPWMI_WIFI),
+ hp_wmi_get_hw_state(HPWMI_WIFI));
+ if (bluetooth_rfkill)
+ rfkill_set_states(bluetooth_rfkill,
+ hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
+ hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
+ if (wwan_rfkill)
+ rfkill_set_states(wwan_rfkill,
+ hp_wmi_get_sw_state(HPWMI_WWAN),
+ hp_wmi_get_hw_state(HPWMI_WWAN));
+ if (gps_rfkill)
+ rfkill_set_states(gps_rfkill,
+ hp_wmi_get_sw_state(HPWMI_GPS),
+ hp_wmi_get_hw_state(HPWMI_GPS));
+
+ return 0;
+}
+
+static const struct dev_pm_ops hp_wmi_pm_ops = {
+ .resume = hp_wmi_resume_handler,
+ .restore = hp_wmi_resume_handler,
+};
+
+static struct platform_driver hp_wmi_driver = {
+ .driver = {
+ .name = "hp-wmi",
+ .pm = &hp_wmi_pm_ops,
+ },
+ .remove = __exit_p(hp_wmi_bios_remove),
+};
+
+static int __init hp_wmi_init(void)
+{
+ int err;
+ int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
+ int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
+
+ if (!bios_capable && !event_capable)
+ return -ENODEV;
+
+ if (event_capable) {
+ err = hp_wmi_input_setup();
+ if (err)
+ return err;
+ }
+
+ if (bios_capable) {
+ hp_wmi_platform_dev =
+ platform_device_register_simple("hp-wmi", -1, NULL, 0);
+ if (IS_ERR(hp_wmi_platform_dev)) {
+ err = PTR_ERR(hp_wmi_platform_dev);
+ goto err_destroy_input;
+ }
+
+ err = platform_driver_probe(&hp_wmi_driver, hp_wmi_bios_setup);
+ if (err)
+ goto err_unregister_device;
+ }
+
+ return 0;
+
+err_unregister_device:
+ platform_device_unregister(hp_wmi_platform_dev);
+err_destroy_input:
+ if (event_capable)
+ hp_wmi_input_destroy();
+
+ return err;
+}
+module_init(hp_wmi_init);
+
+static void __exit hp_wmi_exit(void)
+{
+ if (wmi_has_guid(HPWMI_EVENT_GUID))
+ hp_wmi_input_destroy();
+
+ if (hp_wmi_platform_dev) {
+ platform_device_unregister(hp_wmi_platform_dev);
+ platform_driver_unregister(&hp_wmi_driver);
+ }
+}
+module_exit(hp_wmi_exit);
diff --git a/drivers/platform/x86/hp_accel.c b/drivers/platform/x86/hp_accel.c
new file mode 100644
index 000000000..10ce6cba4
--- /dev/null
+++ b/drivers/platform/x86/hp_accel.c
@@ -0,0 +1,436 @@
+/*
+ * hp_accel.c - Interface between LIS3LV02DL driver and HP ACPI BIOS
+ *
+ * Copyright (C) 2007-2008 Yan Burman
+ * Copyright (C) 2008 Eric Piel
+ * Copyright (C) 2008-2009 Pavel Machek
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/dmi.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/wait.h>
+#include <linux/poll.h>
+#include <linux/freezer.h>
+#include <linux/uaccess.h>
+#include <linux/leds.h>
+#include <linux/atomic.h>
+#include <linux/acpi.h>
+#include <linux/i8042.h>
+#include <linux/serio.h>
+#include "../../misc/lis3lv02d/lis3lv02d.h"
+
+#define DRIVER_NAME "hp_accel"
+#define ACPI_MDPS_CLASS "accelerometer"
+
+/* Delayed LEDs infrastructure ------------------------------------ */
+
+/* Special LED class that can defer work */
+struct delayed_led_classdev {
+ struct led_classdev led_classdev;
+ struct work_struct work;
+ enum led_brightness new_brightness;
+
+ unsigned int led; /* For driver */
+ void (*set_brightness)(struct delayed_led_classdev *data, enum led_brightness value);
+};
+
+static inline void delayed_set_status_worker(struct work_struct *work)
+{
+ struct delayed_led_classdev *data =
+ container_of(work, struct delayed_led_classdev, work);
+
+ data->set_brightness(data, data->new_brightness);
+}
+
+static inline void delayed_sysfs_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct delayed_led_classdev *data = container_of(led_cdev,
+ struct delayed_led_classdev, led_classdev);
+ data->new_brightness = brightness;
+ schedule_work(&data->work);
+}
+
+/* HP-specific accelerometer driver ------------------------------------ */
+
+/* e0 25, e0 26, e0 27, e0 28 are scan codes that the accelerometer with acpi id
+ * HPQ6000 sends through the keyboard bus */
+#define ACCEL_1 0x25
+#define ACCEL_2 0x26
+#define ACCEL_3 0x27
+#define ACCEL_4 0x28
+
+/* For automatic insertion of the module */
+static const struct acpi_device_id lis3lv02d_device_ids[] = {
+ {"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
+ {"HPQ6000", 0}, /* HP Mobile Data Protection System PNP */
+ {"HPQ6007", 0}, /* HP Mobile Data Protection System PNP */
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids);
+
+
+/**
+ * lis3lv02d_acpi_init - ACPI _INI method: initialize the device.
+ * @lis3: pointer to the device struct
+ *
+ * Returns 0 on success.
+ */
+static int lis3lv02d_acpi_init(struct lis3lv02d *lis3)
+{
+ struct acpi_device *dev = lis3->bus_priv;
+ if (acpi_evaluate_object(dev->handle, METHOD_NAME__INI,
+ NULL, NULL) != AE_OK)
+ return -EINVAL;
+
+ return 0;
+}
+
+/**
+ * lis3lv02d_acpi_read - ACPI ALRD method: read a register
+ * @lis3: pointer to the device struct
+ * @reg: the register to read
+ * @ret: result of the operation
+ *
+ * Returns 0 on success.
+ */
+static int lis3lv02d_acpi_read(struct lis3lv02d *lis3, int reg, u8 *ret)
+{
+ struct acpi_device *dev = lis3->bus_priv;
+ union acpi_object arg0 = { ACPI_TYPE_INTEGER };
+ struct acpi_object_list args = { 1, &arg0 };
+ unsigned long long lret;
+ acpi_status status;
+
+ arg0.integer.value = reg;
+
+ status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret);
+ *ret = lret;
+ return (status != AE_OK) ? -EINVAL : 0;
+}
+
+/**
+ * lis3lv02d_acpi_write - ACPI ALWR method: write to a register
+ * @lis3: pointer to the device struct
+ * @reg: the register to write to
+ * @val: the value to write
+ *
+ * Returns 0 on success.
+ */
+static int lis3lv02d_acpi_write(struct lis3lv02d *lis3, int reg, u8 val)
+{
+ struct acpi_device *dev = lis3->bus_priv;
+ unsigned long long ret; /* Not used when writting */
+ union acpi_object in_obj[2];
+ struct acpi_object_list args = { 2, in_obj };
+
+ in_obj[0].type = ACPI_TYPE_INTEGER;
+ in_obj[0].integer.value = reg;
+ in_obj[1].type = ACPI_TYPE_INTEGER;
+ in_obj[1].integer.value = val;
+
+ if (acpi_evaluate_integer(dev->handle, "ALWR", &args, &ret) != AE_OK)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi)
+{
+ lis3_dev.ac = *((union axis_conversion *)dmi->driver_data);
+ pr_info("hardware type %s found\n", dmi->ident);
+
+ return 1;
+}
+
+/* Represents, for each axis seen by userspace, the corresponding hw axis (+1).
+ * If the value is negative, the opposite of the hw value is used. */
+#define DEFINE_CONV(name, x, y, z) \
+ static union axis_conversion lis3lv02d_axis_##name = \
+ { .as_array = { x, y, z } }
+DEFINE_CONV(normal, 1, 2, 3);
+DEFINE_CONV(y_inverted, 1, -2, 3);
+DEFINE_CONV(x_inverted, -1, 2, 3);
+DEFINE_CONV(z_inverted, 1, 2, -3);
+DEFINE_CONV(xy_swap, 2, 1, 3);
+DEFINE_CONV(xy_rotated_left, -2, 1, 3);
+DEFINE_CONV(xy_rotated_left_usd, -2, 1, -3);
+DEFINE_CONV(xy_swap_inverted, -2, -1, 3);
+DEFINE_CONV(xy_rotated_right, 2, -1, 3);
+DEFINE_CONV(xy_swap_yz_inverted, 2, -1, -3);
+
+#define AXIS_DMI_MATCH(_ident, _name, _axis) { \
+ .ident = _ident, \
+ .callback = lis3lv02d_dmi_matched, \
+ .matches = { \
+ DMI_MATCH(DMI_PRODUCT_NAME, _name) \
+ }, \
+ .driver_data = &lis3lv02d_axis_##_axis \
+}
+
+#define AXIS_DMI_MATCH2(_ident, _class1, _name1, \
+ _class2, _name2, \
+ _axis) { \
+ .ident = _ident, \
+ .callback = lis3lv02d_dmi_matched, \
+ .matches = { \
+ DMI_MATCH(DMI_##_class1, _name1), \
+ DMI_MATCH(DMI_##_class2, _name2), \
+ }, \
+ .driver_data = &lis3lv02d_axis_##_axis \
+}
+static const struct dmi_system_id lis3lv02d_dmi_ids[] = {
+ /* product names are truncated to match all kinds of a same model */
+ AXIS_DMI_MATCH("NC64x0", "HP Compaq nc64", x_inverted),
+ AXIS_DMI_MATCH("NC84x0", "HP Compaq nc84", z_inverted),
+ AXIS_DMI_MATCH("NX9420", "HP Compaq nx9420", x_inverted),
+ AXIS_DMI_MATCH("NW9440", "HP Compaq nw9440", x_inverted),
+ AXIS_DMI_MATCH("NC2510", "HP Compaq 2510", y_inverted),
+ AXIS_DMI_MATCH("NC2710", "HP Compaq 2710", xy_swap),
+ AXIS_DMI_MATCH("NC8510", "HP Compaq 8510", xy_swap_inverted),
+ AXIS_DMI_MATCH("HP2133", "HP 2133", xy_rotated_left),
+ AXIS_DMI_MATCH("HP2140", "HP 2140", xy_swap_inverted),
+ AXIS_DMI_MATCH("NC653x", "HP Compaq 653", xy_rotated_left_usd),
+ AXIS_DMI_MATCH("NC6730b", "HP Compaq 6730b", xy_rotated_left_usd),
+ AXIS_DMI_MATCH("NC6730s", "HP Compaq 6730s", xy_swap),
+ AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right),
+ AXIS_DMI_MATCH("NC6710x", "HP Compaq 6710", xy_swap_yz_inverted),
+ AXIS_DMI_MATCH("NC6715x", "HP Compaq 6715", y_inverted),
+ AXIS_DMI_MATCH("NC693xx", "HP EliteBook 693", xy_rotated_right),
+ AXIS_DMI_MATCH("NC693xx", "HP EliteBook 853", xy_swap),
+ AXIS_DMI_MATCH("NC854xx", "HP EliteBook 854", y_inverted),
+ AXIS_DMI_MATCH("NC273xx", "HP EliteBook 273", y_inverted),
+ /* Intel-based HP Pavilion dv5 */
+ AXIS_DMI_MATCH2("HPDV5_I",
+ PRODUCT_NAME, "HP Pavilion dv5",
+ BOARD_NAME, "3603",
+ x_inverted),
+ /* AMD-based HP Pavilion dv5 */
+ AXIS_DMI_MATCH2("HPDV5_A",
+ PRODUCT_NAME, "HP Pavilion dv5",
+ BOARD_NAME, "3600",
+ y_inverted),
+ AXIS_DMI_MATCH("DV7", "HP Pavilion dv7", x_inverted),
+ AXIS_DMI_MATCH("HP8710", "HP Compaq 8710", y_inverted),
+ AXIS_DMI_MATCH("HDX18", "HP HDX 18", x_inverted),
+ AXIS_DMI_MATCH("HPB432x", "HP ProBook 432", xy_rotated_left),
+ AXIS_DMI_MATCH("HPB442x", "HP ProBook 442", xy_rotated_left),
+ AXIS_DMI_MATCH("HPB452x", "HP ProBook 452", y_inverted),
+ AXIS_DMI_MATCH("HPB522x", "HP ProBook 522", xy_swap),
+ AXIS_DMI_MATCH("HPB532x", "HP ProBook 532", y_inverted),
+ AXIS_DMI_MATCH("HPB655x", "HP ProBook 655", xy_swap_inverted),
+ AXIS_DMI_MATCH("Mini510x", "HP Mini 510", xy_rotated_left_usd),
+ AXIS_DMI_MATCH("HPB63xx", "HP ProBook 63", xy_swap),
+ AXIS_DMI_MATCH("HPB64xx", "HP ProBook 64", xy_swap),
+ AXIS_DMI_MATCH("HPB64xx", "HP EliteBook 84", xy_swap),
+ AXIS_DMI_MATCH("HPB65xx", "HP ProBook 65", x_inverted),
+ AXIS_DMI_MATCH("HPZBook15", "HP ZBook 15", x_inverted),
+ { NULL, }
+/* Laptop models without axis info (yet):
+ * "NC6910" "HP Compaq 6910"
+ * "NC2400" "HP Compaq nc2400"
+ * "NX74x0" "HP Compaq nx74"
+ * "NX6325" "HP Compaq nx6325"
+ * "NC4400" "HP Compaq nc4400"
+ */
+};
+
+static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value)
+{
+ struct acpi_device *dev = lis3_dev.bus_priv;
+ unsigned long long ret; /* Not used when writing */
+ union acpi_object in_obj[1];
+ struct acpi_object_list args = { 1, in_obj };
+
+ in_obj[0].type = ACPI_TYPE_INTEGER;
+ in_obj[0].integer.value = !!value;
+
+ acpi_evaluate_integer(dev->handle, "ALED", &args, &ret);
+}
+
+static struct delayed_led_classdev hpled_led = {
+ .led_classdev = {
+ .name = "hp::hddprotect",
+ .default_trigger = "none",
+ .brightness_set = delayed_sysfs_set,
+ .flags = LED_CORE_SUSPENDRESUME,
+ },
+ .set_brightness = hpled_set,
+};
+
+static acpi_status
+lis3lv02d_get_resource(struct acpi_resource *resource, void *context)
+{
+ if (resource->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
+ struct acpi_resource_extended_irq *irq;
+ u32 *device_irq = context;
+
+ irq = &resource->data.extended_irq;
+ *device_irq = irq->interrupts[0];
+ }
+
+ return AE_OK;
+}
+
+static void lis3lv02d_enum_resources(struct acpi_device *device)
+{
+ acpi_status status;
+
+ status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
+ lis3lv02d_get_resource, &lis3_dev.irq);
+ if (ACPI_FAILURE(status))
+ printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n");
+}
+
+static bool hp_accel_i8042_filter(unsigned char data, unsigned char str,
+ struct serio *port)
+{
+ static bool extended;
+
+ if (str & I8042_STR_AUXDATA)
+ return false;
+
+ if (data == 0xe0) {
+ extended = true;
+ return true;
+ } else if (unlikely(extended)) {
+ extended = false;
+
+ switch (data) {
+ case ACCEL_1:
+ case ACCEL_2:
+ case ACCEL_3:
+ case ACCEL_4:
+ return true;
+ default:
+ serio_interrupt(port, 0xe0, 0);
+ return false;
+ }
+ }
+
+ return false;
+}
+
+static int lis3lv02d_add(struct acpi_device *device)
+{
+ int ret;
+
+ if (!device)
+ return -EINVAL;
+
+ lis3_dev.bus_priv = device;
+ lis3_dev.init = lis3lv02d_acpi_init;
+ lis3_dev.read = lis3lv02d_acpi_read;
+ lis3_dev.write = lis3lv02d_acpi_write;
+ strcpy(acpi_device_name(device), DRIVER_NAME);
+ strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
+ device->driver_data = &lis3_dev;
+
+ /* obtain IRQ number of our device from ACPI */
+ lis3lv02d_enum_resources(device);
+
+ /* If possible use a "standard" axes order */
+ if (lis3_dev.ac.x && lis3_dev.ac.y && lis3_dev.ac.z) {
+ pr_info("Using custom axes %d,%d,%d\n",
+ lis3_dev.ac.x, lis3_dev.ac.y, lis3_dev.ac.z);
+ } else if (dmi_check_system(lis3lv02d_dmi_ids) == 0) {
+ pr_info("laptop model unknown, using default axes configuration\n");
+ lis3_dev.ac = lis3lv02d_axis_normal;
+ }
+
+ /* call the core layer do its init */
+ ret = lis3lv02d_init_device(&lis3_dev);
+ if (ret)
+ return ret;
+
+ /* filter to remove HPQ6000 accelerometer data
+ * from keyboard bus stream */
+ if (strstr(dev_name(&device->dev), "HPQ6000"))
+ i8042_install_filter(hp_accel_i8042_filter);
+
+ INIT_WORK(&hpled_led.work, delayed_set_status_worker);
+ ret = led_classdev_register(NULL, &hpled_led.led_classdev);
+ if (ret) {
+ lis3lv02d_joystick_disable(&lis3_dev);
+ lis3lv02d_poweroff(&lis3_dev);
+ flush_work(&hpled_led.work);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int lis3lv02d_remove(struct acpi_device *device)
+{
+ if (!device)
+ return -EINVAL;
+
+ i8042_remove_filter(hp_accel_i8042_filter);
+ lis3lv02d_joystick_disable(&lis3_dev);
+ lis3lv02d_poweroff(&lis3_dev);
+
+ led_classdev_unregister(&hpled_led.led_classdev);
+ flush_work(&hpled_led.work);
+
+ return lis3lv02d_remove_fs(&lis3_dev);
+}
+
+
+#ifdef CONFIG_PM_SLEEP
+static int lis3lv02d_suspend(struct device *dev)
+{
+ /* make sure the device is off when we suspend */
+ lis3lv02d_poweroff(&lis3_dev);
+ return 0;
+}
+
+static int lis3lv02d_resume(struct device *dev)
+{
+ lis3lv02d_poweron(&lis3_dev);
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(hp_accel_pm, lis3lv02d_suspend, lis3lv02d_resume);
+#define HP_ACCEL_PM (&hp_accel_pm)
+#else
+#define HP_ACCEL_PM NULL
+#endif
+
+/* For the HP MDPS aka 3D Driveguard */
+static struct acpi_driver lis3lv02d_driver = {
+ .name = DRIVER_NAME,
+ .class = ACPI_MDPS_CLASS,
+ .ids = lis3lv02d_device_ids,
+ .ops = {
+ .add = lis3lv02d_add,
+ .remove = lis3lv02d_remove,
+ },
+ .drv.pm = HP_ACCEL_PM,
+};
+module_acpi_driver(lis3lv02d_driver);
+
+MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED.");
+MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/ibm_rtl.c b/drivers/platform/x86/ibm_rtl.c
new file mode 100644
index 000000000..97c2be195
--- /dev/null
+++ b/drivers/platform/x86/ibm_rtl.c
@@ -0,0 +1,328 @@
+/*
+ * IBM Real-Time Linux driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) IBM Corporation, 2010
+ *
+ * Author: Keith Mannthey <kmannth@us.ibm.com>
+ * Vernon Mauery <vernux@us.ibm.com>
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/dmi.h>
+#include <linux/efi.h>
+#include <linux/mutex.h>
+#include <asm/bios_ebda.h>
+
+#include <asm-generic/io-64-nonatomic-lo-hi.h>
+
+static bool force;
+module_param(force, bool, 0);
+MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
+
+static bool debug;
+module_param(debug, bool, 0644);
+MODULE_PARM_DESC(debug, "Show debug output");
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Keith Mannthey <kmmanth@us.ibm.com>");
+MODULE_AUTHOR("Vernon Mauery <vernux@us.ibm.com>");
+
+#define RTL_ADDR_TYPE_IO 1
+#define RTL_ADDR_TYPE_MMIO 2
+
+#define RTL_CMD_ENTER_PRTM 1
+#define RTL_CMD_EXIT_PRTM 2
+
+/* The RTL table as presented by the EBDA: */
+struct ibm_rtl_table {
+ char signature[5]; /* signature should be "_RTL_" */
+ u8 version;
+ u8 rt_status;
+ u8 command;
+ u8 command_status;
+ u8 cmd_address_type;
+ u8 cmd_granularity;
+ u8 cmd_offset;
+ u16 reserve1;
+ u32 cmd_port_address; /* platform dependent address */
+ u32 cmd_port_value; /* platform dependent value */
+} __attribute__((packed));
+
+/* to locate "_RTL_" signature do a masked 5-byte integer compare */
+#define RTL_SIGNATURE 0x0000005f4c54525fULL
+#define RTL_MASK 0x000000ffffffffffULL
+
+#define RTL_DEBUG(fmt, ...) \
+do { \
+ if (debug) \
+ pr_info(fmt, ##__VA_ARGS__); \
+} while (0)
+
+static DEFINE_MUTEX(rtl_lock);
+static struct ibm_rtl_table __iomem *rtl_table;
+static void __iomem *ebda_map;
+static void __iomem *rtl_cmd_addr;
+static u8 rtl_cmd_type;
+static u8 rtl_cmd_width;
+
+static void __iomem *rtl_port_map(phys_addr_t addr, unsigned long len)
+{
+ if (rtl_cmd_type == RTL_ADDR_TYPE_MMIO)
+ return ioremap(addr, len);
+ return ioport_map(addr, len);
+}
+
+static void rtl_port_unmap(void __iomem *addr)
+{
+ if (addr && rtl_cmd_type == RTL_ADDR_TYPE_MMIO)
+ iounmap(addr);
+ else
+ ioport_unmap(addr);
+}
+
+static int ibm_rtl_write(u8 value)
+{
+ int ret = 0, count = 0;
+ static u32 cmd_port_val;
+
+ RTL_DEBUG("%s(%d)\n", __func__, value);
+
+ value = value == 1 ? RTL_CMD_ENTER_PRTM : RTL_CMD_EXIT_PRTM;
+
+ mutex_lock(&rtl_lock);
+
+ if (ioread8(&rtl_table->rt_status) != value) {
+ iowrite8(value, &rtl_table->command);
+
+ switch (rtl_cmd_width) {
+ case 8:
+ cmd_port_val = ioread8(&rtl_table->cmd_port_value);
+ RTL_DEBUG("cmd_port_val = %u\n", cmd_port_val);
+ iowrite8((u8)cmd_port_val, rtl_cmd_addr);
+ break;
+ case 16:
+ cmd_port_val = ioread16(&rtl_table->cmd_port_value);
+ RTL_DEBUG("cmd_port_val = %u\n", cmd_port_val);
+ iowrite16((u16)cmd_port_val, rtl_cmd_addr);
+ break;
+ case 32:
+ cmd_port_val = ioread32(&rtl_table->cmd_port_value);
+ RTL_DEBUG("cmd_port_val = %u\n", cmd_port_val);
+ iowrite32(cmd_port_val, rtl_cmd_addr);
+ break;
+ }
+
+ while (ioread8(&rtl_table->command)) {
+ msleep(10);
+ if (count++ > 500) {
+ pr_err("Hardware not responding to "
+ "mode switch request\n");
+ ret = -EIO;
+ break;
+ }
+
+ }
+
+ if (ioread8(&rtl_table->command_status)) {
+ RTL_DEBUG("command_status reports failed command\n");
+ ret = -EIO;
+ }
+ }
+
+ mutex_unlock(&rtl_lock);
+ return ret;
+}
+
+static ssize_t rtl_show_version(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%d\n", (int)ioread8(&rtl_table->version));
+}
+
+static ssize_t rtl_show_state(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%d\n", ioread8(&rtl_table->rt_status));
+}
+
+static ssize_t rtl_set_state(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ ssize_t ret;
+
+ if (count < 1 || count > 2)
+ return -EINVAL;
+
+ switch (buf[0]) {
+ case '0':
+ ret = ibm_rtl_write(0);
+ break;
+ case '1':
+ ret = ibm_rtl_write(1);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ if (ret >= 0)
+ ret = count;
+
+ return ret;
+}
+
+static struct bus_type rtl_subsys = {
+ .name = "ibm_rtl",
+ .dev_name = "ibm_rtl",
+};
+
+static DEVICE_ATTR(version, S_IRUGO, rtl_show_version, NULL);
+static DEVICE_ATTR(state, 0600, rtl_show_state, rtl_set_state);
+
+static struct device_attribute *rtl_attributes[] = {
+ &dev_attr_version,
+ &dev_attr_state,
+ NULL
+};
+
+
+static int rtl_setup_sysfs(void) {
+ int ret, i;
+
+ ret = subsys_system_register(&rtl_subsys, NULL);
+ if (!ret) {
+ for (i = 0; rtl_attributes[i]; i ++)
+ device_create_file(rtl_subsys.dev_root, rtl_attributes[i]);
+ }
+ return ret;
+}
+
+static void rtl_teardown_sysfs(void) {
+ int i;
+ for (i = 0; rtl_attributes[i]; i ++)
+ device_remove_file(rtl_subsys.dev_root, rtl_attributes[i]);
+ bus_unregister(&rtl_subsys);
+}
+
+
+static struct dmi_system_id __initdata ibm_rtl_dmi_table[] = {
+ { \
+ .matches = { \
+ DMI_MATCH(DMI_SYS_VENDOR, "IBM"), \
+ }, \
+ },
+ { }
+};
+
+static int __init ibm_rtl_init(void) {
+ unsigned long ebda_addr, ebda_size;
+ unsigned int ebda_kb;
+ int ret = -ENODEV, i;
+
+ if (force)
+ pr_warn("module loaded by force\n");
+ /* first ensure that we are running on IBM HW */
+ else if (efi_enabled(EFI_BOOT) || !dmi_check_system(ibm_rtl_dmi_table))
+ return -ENODEV;
+
+ /* Get the address for the Extended BIOS Data Area */
+ ebda_addr = get_bios_ebda();
+ if (!ebda_addr) {
+ RTL_DEBUG("no BIOS EBDA found\n");
+ return -ENODEV;
+ }
+
+ ebda_map = ioremap(ebda_addr, 4);
+ if (!ebda_map)
+ return -ENOMEM;
+
+ /* First word in the EDBA is the Size in KB */
+ ebda_kb = ioread16(ebda_map);
+ RTL_DEBUG("EBDA is %d kB\n", ebda_kb);
+
+ if (ebda_kb == 0)
+ goto out;
+
+ iounmap(ebda_map);
+ ebda_size = ebda_kb*1024;
+
+ /* Remap the whole table */
+ ebda_map = ioremap(ebda_addr, ebda_size);
+ if (!ebda_map)
+ return -ENOMEM;
+
+ /* search for the _RTL_ signature at the start of the table */
+ for (i = 0 ; i < ebda_size/sizeof(unsigned int); i++) {
+ struct ibm_rtl_table __iomem * tmp;
+ tmp = (struct ibm_rtl_table __iomem *) (ebda_map+i);
+ if ((readq(&tmp->signature) & RTL_MASK) == RTL_SIGNATURE) {
+ phys_addr_t addr;
+ unsigned int plen;
+ RTL_DEBUG("found RTL_SIGNATURE at %p\n", tmp);
+ rtl_table = tmp;
+ /* The address, value, width and offset are platform
+ * dependent and found in the ibm_rtl_table */
+ rtl_cmd_width = ioread8(&rtl_table->cmd_granularity);
+ rtl_cmd_type = ioread8(&rtl_table->cmd_address_type);
+ RTL_DEBUG("rtl_cmd_width = %u, rtl_cmd_type = %u\n",
+ rtl_cmd_width, rtl_cmd_type);
+ addr = ioread32(&rtl_table->cmd_port_address);
+ RTL_DEBUG("addr = %#llx\n", (unsigned long long)addr);
+ plen = rtl_cmd_width/sizeof(char);
+ rtl_cmd_addr = rtl_port_map(addr, plen);
+ RTL_DEBUG("rtl_cmd_addr = %p\n", rtl_cmd_addr);
+ if (!rtl_cmd_addr) {
+ ret = -ENOMEM;
+ break;
+ }
+ ret = rtl_setup_sysfs();
+ break;
+ }
+ }
+
+out:
+ if (ret) {
+ iounmap(ebda_map);
+ rtl_port_unmap(rtl_cmd_addr);
+ }
+
+ return ret;
+}
+
+static void __exit ibm_rtl_exit(void)
+{
+ if (rtl_table) {
+ RTL_DEBUG("cleaning up");
+ /* do not leave the machine in SMI-free mode */
+ ibm_rtl_write(0);
+ /* unmap, unlink and remove all traces */
+ rtl_teardown_sysfs();
+ iounmap(ebda_map);
+ rtl_port_unmap(rtl_cmd_addr);
+ }
+}
+
+module_init(ibm_rtl_init);
+module_exit(ibm_rtl_exit);
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
new file mode 100644
index 000000000..cb7cd8d79
--- /dev/null
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -0,0 +1,992 @@
+/*
+ * ideapad-laptop.c - Lenovo IdeaPad ACPI Extras
+ *
+ * Copyright © 2010 Intel Corporation
+ * Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/acpi.h>
+#include <linux/rfkill.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/backlight.h>
+#include <linux/fb.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/i8042.h>
+#include <linux/dmi.h>
+#include <linux/device.h>
+
+#define IDEAPAD_RFKILL_DEV_NUM (3)
+
+#define CFG_BT_BIT (16)
+#define CFG_3G_BIT (17)
+#define CFG_WIFI_BIT (18)
+#define CFG_CAMERA_BIT (19)
+
+enum {
+ VPCCMD_R_VPC1 = 0x10,
+ VPCCMD_R_BL_MAX,
+ VPCCMD_R_BL,
+ VPCCMD_W_BL,
+ VPCCMD_R_WIFI,
+ VPCCMD_W_WIFI,
+ VPCCMD_R_BT,
+ VPCCMD_W_BT,
+ VPCCMD_R_BL_POWER,
+ VPCCMD_R_NOVO,
+ VPCCMD_R_VPC2,
+ VPCCMD_R_TOUCHPAD,
+ VPCCMD_W_TOUCHPAD,
+ VPCCMD_R_CAMERA,
+ VPCCMD_W_CAMERA,
+ VPCCMD_R_3G,
+ VPCCMD_W_3G,
+ VPCCMD_R_ODD, /* 0x21 */
+ VPCCMD_W_FAN,
+ VPCCMD_R_RF,
+ VPCCMD_W_RF,
+ VPCCMD_R_FAN = 0x2B,
+ VPCCMD_R_SPECIAL_BUTTONS = 0x31,
+ VPCCMD_W_BL_POWER = 0x33,
+};
+
+struct ideapad_rfk_priv {
+ int dev;
+ struct ideapad_private *priv;
+};
+
+struct ideapad_private {
+ struct acpi_device *adev;
+ struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
+ struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
+ struct platform_device *platform_device;
+ struct input_dev *inputdev;
+ struct backlight_device *blightdev;
+ struct dentry *debug;
+ unsigned long cfg;
+ bool has_hw_rfkill_switch;
+};
+
+static bool no_bt_rfkill;
+module_param(no_bt_rfkill, bool, 0444);
+MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
+
+/*
+ * ACPI Helpers
+ */
+#define IDEAPAD_EC_TIMEOUT (100) /* in ms */
+
+static int read_method_int(acpi_handle handle, const char *method, int *val)
+{
+ acpi_status status;
+ unsigned long long result;
+
+ status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
+ if (ACPI_FAILURE(status)) {
+ *val = -1;
+ return -1;
+ } else {
+ *val = result;
+ return 0;
+ }
+}
+
+static int method_vpcr(acpi_handle handle, int cmd, int *ret)
+{
+ acpi_status status;
+ unsigned long long result;
+ struct acpi_object_list params;
+ union acpi_object in_obj;
+
+ params.count = 1;
+ params.pointer = &in_obj;
+ in_obj.type = ACPI_TYPE_INTEGER;
+ in_obj.integer.value = cmd;
+
+ status = acpi_evaluate_integer(handle, "VPCR", &params, &result);
+
+ if (ACPI_FAILURE(status)) {
+ *ret = -1;
+ return -1;
+ } else {
+ *ret = result;
+ return 0;
+ }
+}
+
+static int method_vpcw(acpi_handle handle, int cmd, int data)
+{
+ struct acpi_object_list params;
+ union acpi_object in_obj[2];
+ acpi_status status;
+
+ params.count = 2;
+ params.pointer = in_obj;
+ in_obj[0].type = ACPI_TYPE_INTEGER;
+ in_obj[0].integer.value = cmd;
+ in_obj[1].type = ACPI_TYPE_INTEGER;
+ in_obj[1].integer.value = data;
+
+ status = acpi_evaluate_object(handle, "VPCW", &params, NULL);
+ if (status != AE_OK)
+ return -1;
+ return 0;
+}
+
+static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
+{
+ int val;
+ unsigned long int end_jiffies;
+
+ if (method_vpcw(handle, 1, cmd))
+ return -1;
+
+ for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
+ time_before(jiffies, end_jiffies);) {
+ schedule();
+ if (method_vpcr(handle, 1, &val))
+ return -1;
+ if (val == 0) {
+ if (method_vpcr(handle, 0, &val))
+ return -1;
+ *data = val;
+ return 0;
+ }
+ }
+ pr_err("timeout in read_ec_cmd\n");
+ return -1;
+}
+
+static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
+{
+ int val;
+ unsigned long int end_jiffies;
+
+ if (method_vpcw(handle, 0, data))
+ return -1;
+ if (method_vpcw(handle, 1, cmd))
+ return -1;
+
+ for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
+ time_before(jiffies, end_jiffies);) {
+ schedule();
+ if (method_vpcr(handle, 1, &val))
+ return -1;
+ if (val == 0)
+ return 0;
+ }
+ pr_err("timeout in write_ec_cmd\n");
+ return -1;
+}
+
+/*
+ * debugfs
+ */
+static int debugfs_status_show(struct seq_file *s, void *data)
+{
+ struct ideapad_private *priv = s->private;
+ unsigned long value;
+
+ if (!priv)
+ return -EINVAL;
+
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
+ seq_printf(s, "Backlight max:\t%lu\n", value);
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
+ seq_printf(s, "Backlight now:\t%lu\n", value);
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
+ seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
+ seq_printf(s, "=====================\n");
+
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
+ seq_printf(s, "Radio status:\t%s(%lu)\n",
+ value ? "On" : "Off", value);
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
+ seq_printf(s, "Wifi status:\t%s(%lu)\n",
+ value ? "On" : "Off", value);
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
+ seq_printf(s, "BT status:\t%s(%lu)\n",
+ value ? "On" : "Off", value);
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
+ seq_printf(s, "3G status:\t%s(%lu)\n",
+ value ? "On" : "Off", value);
+ seq_printf(s, "=====================\n");
+
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
+ seq_printf(s, "Touchpad status:%s(%lu)\n",
+ value ? "On" : "Off", value);
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
+ seq_printf(s, "Camera status:\t%s(%lu)\n",
+ value ? "On" : "Off", value);
+
+ return 0;
+}
+
+static int debugfs_status_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, debugfs_status_show, inode->i_private);
+}
+
+static const struct file_operations debugfs_status_fops = {
+ .owner = THIS_MODULE,
+ .open = debugfs_status_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int debugfs_cfg_show(struct seq_file *s, void *data)
+{
+ struct ideapad_private *priv = s->private;
+
+ if (!priv) {
+ seq_printf(s, "cfg: N/A\n");
+ } else {
+ seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
+ priv->cfg);
+ if (test_bit(CFG_BT_BIT, &priv->cfg))
+ seq_printf(s, "Bluetooth ");
+ if (test_bit(CFG_3G_BIT, &priv->cfg))
+ seq_printf(s, "3G ");
+ if (test_bit(CFG_WIFI_BIT, &priv->cfg))
+ seq_printf(s, "Wireless ");
+ if (test_bit(CFG_CAMERA_BIT, &priv->cfg))
+ seq_printf(s, "Camera ");
+ seq_printf(s, "\nGraphic: ");
+ switch ((priv->cfg)&0x700) {
+ case 0x100:
+ seq_printf(s, "Intel");
+ break;
+ case 0x200:
+ seq_printf(s, "ATI");
+ break;
+ case 0x300:
+ seq_printf(s, "Nvidia");
+ break;
+ case 0x400:
+ seq_printf(s, "Intel and ATI");
+ break;
+ case 0x500:
+ seq_printf(s, "Intel and Nvidia");
+ break;
+ }
+ seq_printf(s, "\n");
+ }
+ return 0;
+}
+
+static int debugfs_cfg_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, debugfs_cfg_show, inode->i_private);
+}
+
+static const struct file_operations debugfs_cfg_fops = {
+ .owner = THIS_MODULE,
+ .open = debugfs_cfg_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int ideapad_debugfs_init(struct ideapad_private *priv)
+{
+ struct dentry *node;
+
+ priv->debug = debugfs_create_dir("ideapad", NULL);
+ if (priv->debug == NULL) {
+ pr_err("failed to create debugfs directory");
+ goto errout;
+ }
+
+ node = debugfs_create_file("cfg", S_IRUGO, priv->debug, priv,
+ &debugfs_cfg_fops);
+ if (!node) {
+ pr_err("failed to create cfg in debugfs");
+ goto errout;
+ }
+
+ node = debugfs_create_file("status", S_IRUGO, priv->debug, priv,
+ &debugfs_status_fops);
+ if (!node) {
+ pr_err("failed to create status in debugfs");
+ goto errout;
+ }
+
+ return 0;
+
+errout:
+ return -ENOMEM;
+}
+
+static void ideapad_debugfs_exit(struct ideapad_private *priv)
+{
+ debugfs_remove_recursive(priv->debug);
+ priv->debug = NULL;
+}
+
+/*
+ * sysfs
+ */
+static ssize_t show_ideapad_cam(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ unsigned long result;
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result))
+ return sprintf(buf, "-1\n");
+ return sprintf(buf, "%lu\n", result);
+}
+
+static ssize_t store_ideapad_cam(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ret, state;
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+
+ if (!count)
+ return 0;
+ if (sscanf(buf, "%i", &state) != 1)
+ return -EINVAL;
+ ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
+ if (ret < 0)
+ return -EIO;
+ return count;
+}
+
+static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
+
+static ssize_t show_ideapad_fan(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ unsigned long result;
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result))
+ return sprintf(buf, "-1\n");
+ return sprintf(buf, "%lu\n", result);
+}
+
+static ssize_t store_ideapad_fan(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ret, state;
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+
+ if (!count)
+ return 0;
+ if (sscanf(buf, "%i", &state) != 1)
+ return -EINVAL;
+ if (state < 0 || state > 4 || state == 3)
+ return -EINVAL;
+ ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
+ if (ret < 0)
+ return -EIO;
+ return count;
+}
+
+static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan);
+
+static struct attribute *ideapad_attributes[] = {
+ &dev_attr_camera_power.attr,
+ &dev_attr_fan_mode.attr,
+ NULL
+};
+
+static umode_t ideapad_is_visible(struct kobject *kobj,
+ struct attribute *attr,
+ int idx)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ bool supported;
+
+ if (attr == &dev_attr_camera_power.attr)
+ supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
+ else if (attr == &dev_attr_fan_mode.attr) {
+ unsigned long value;
+ supported = !read_ec_data(priv->adev->handle, VPCCMD_R_FAN,
+ &value);
+ } else
+ supported = true;
+
+ return supported ? attr->mode : 0;
+}
+
+static const struct attribute_group ideapad_attribute_group = {
+ .is_visible = ideapad_is_visible,
+ .attrs = ideapad_attributes
+};
+
+/*
+ * Rfkill
+ */
+struct ideapad_rfk_data {
+ char *name;
+ int cfgbit;
+ int opcode;
+ int type;
+};
+
+static const struct ideapad_rfk_data ideapad_rfk_data[] = {
+ { "ideapad_wlan", CFG_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
+ { "ideapad_bluetooth", CFG_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
+ { "ideapad_3g", CFG_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
+};
+
+static int ideapad_rfk_set(void *data, bool blocked)
+{
+ struct ideapad_rfk_priv *priv = data;
+ int opcode = ideapad_rfk_data[priv->dev].opcode;
+
+ return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked);
+}
+
+static struct rfkill_ops ideapad_rfk_ops = {
+ .set_block = ideapad_rfk_set,
+};
+
+static void ideapad_sync_rfk_state(struct ideapad_private *priv)
+{
+ unsigned long hw_blocked = 0;
+ int i;
+
+ if (priv->has_hw_rfkill_switch) {
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
+ return;
+ hw_blocked = !hw_blocked;
+ }
+
+ for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
+ if (priv->rfk[i])
+ rfkill_set_hw_state(priv->rfk[i], hw_blocked);
+}
+
+static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
+{
+ int ret;
+ unsigned long sw_blocked;
+
+ if (no_bt_rfkill &&
+ (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
+ /* Force to enable bluetooth when no_bt_rfkill=1 */
+ write_ec_cmd(priv->adev->handle,
+ ideapad_rfk_data[dev].opcode, 1);
+ return 0;
+ }
+ priv->rfk_priv[dev].dev = dev;
+ priv->rfk_priv[dev].priv = priv;
+
+ priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name,
+ &priv->platform_device->dev,
+ ideapad_rfk_data[dev].type,
+ &ideapad_rfk_ops,
+ &priv->rfk_priv[dev]);
+ if (!priv->rfk[dev])
+ return -ENOMEM;
+
+ if (read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode-1,
+ &sw_blocked)) {
+ rfkill_init_sw_state(priv->rfk[dev], 0);
+ } else {
+ sw_blocked = !sw_blocked;
+ rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
+ }
+
+ ret = rfkill_register(priv->rfk[dev]);
+ if (ret) {
+ rfkill_destroy(priv->rfk[dev]);
+ return ret;
+ }
+ return 0;
+}
+
+static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
+{
+ if (!priv->rfk[dev])
+ return;
+
+ rfkill_unregister(priv->rfk[dev]);
+ rfkill_destroy(priv->rfk[dev]);
+}
+
+/*
+ * Platform device
+ */
+static int ideapad_sysfs_init(struct ideapad_private *priv)
+{
+ return sysfs_create_group(&priv->platform_device->dev.kobj,
+ &ideapad_attribute_group);
+}
+
+static void ideapad_sysfs_exit(struct ideapad_private *priv)
+{
+ sysfs_remove_group(&priv->platform_device->dev.kobj,
+ &ideapad_attribute_group);
+}
+
+/*
+ * input device
+ */
+static const struct key_entry ideapad_keymap[] = {
+ { KE_KEY, 6, { KEY_SWITCHVIDEOMODE } },
+ { KE_KEY, 7, { KEY_CAMERA } },
+ { KE_KEY, 11, { KEY_F16 } },
+ { KE_KEY, 13, { KEY_WLAN } },
+ { KE_KEY, 16, { KEY_PROG1 } },
+ { KE_KEY, 17, { KEY_PROG2 } },
+ { KE_KEY, 64, { KEY_PROG3 } },
+ { KE_KEY, 65, { KEY_PROG4 } },
+ { KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
+ { KE_KEY, 67, { KEY_TOUCHPAD_ON } },
+ { KE_END, 0 },
+};
+
+static int ideapad_input_init(struct ideapad_private *priv)
+{
+ struct input_dev *inputdev;
+ int error;
+
+ inputdev = input_allocate_device();
+ if (!inputdev)
+ return -ENOMEM;
+
+ inputdev->name = "Ideapad extra buttons";
+ inputdev->phys = "ideapad/input0";
+ inputdev->id.bustype = BUS_HOST;
+ inputdev->dev.parent = &priv->platform_device->dev;
+
+ error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
+ if (error) {
+ pr_err("Unable to setup input device keymap\n");
+ goto err_free_dev;
+ }
+
+ error = input_register_device(inputdev);
+ if (error) {
+ pr_err("Unable to register input device\n");
+ goto err_free_keymap;
+ }
+
+ priv->inputdev = inputdev;
+ return 0;
+
+err_free_keymap:
+ sparse_keymap_free(inputdev);
+err_free_dev:
+ input_free_device(inputdev);
+ return error;
+}
+
+static void ideapad_input_exit(struct ideapad_private *priv)
+{
+ sparse_keymap_free(priv->inputdev);
+ input_unregister_device(priv->inputdev);
+ priv->inputdev = NULL;
+}
+
+static void ideapad_input_report(struct ideapad_private *priv,
+ unsigned long scancode)
+{
+ sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
+}
+
+static void ideapad_input_novokey(struct ideapad_private *priv)
+{
+ unsigned long long_pressed;
+
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
+ return;
+ if (long_pressed)
+ ideapad_input_report(priv, 17);
+ else
+ ideapad_input_report(priv, 16);
+}
+
+static void ideapad_check_special_buttons(struct ideapad_private *priv)
+{
+ unsigned long bit, value;
+
+ read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value);
+
+ for (bit = 0; bit < 16; bit++) {
+ if (test_bit(bit, &value)) {
+ switch (bit) {
+ case 0: /* Z580 */
+ case 6: /* Z570 */
+ /* Thermal Management button */
+ ideapad_input_report(priv, 65);
+ break;
+ case 1:
+ /* OneKey Theater button */
+ ideapad_input_report(priv, 64);
+ break;
+ default:
+ pr_info("Unknown special button: %lu\n", bit);
+ break;
+ }
+ }
+ }
+}
+
+/*
+ * backlight
+ */
+static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
+{
+ struct ideapad_private *priv = bl_get_data(blightdev);
+ unsigned long now;
+
+ if (!priv)
+ return -EINVAL;
+
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
+ return -EIO;
+ return now;
+}
+
+static int ideapad_backlight_update_status(struct backlight_device *blightdev)
+{
+ struct ideapad_private *priv = bl_get_data(blightdev);
+
+ if (!priv)
+ return -EINVAL;
+
+ if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
+ blightdev->props.brightness))
+ return -EIO;
+ if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
+ blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
+ return -EIO;
+
+ return 0;
+}
+
+static const struct backlight_ops ideapad_backlight_ops = {
+ .get_brightness = ideapad_backlight_get_brightness,
+ .update_status = ideapad_backlight_update_status,
+};
+
+static int ideapad_backlight_init(struct ideapad_private *priv)
+{
+ struct backlight_device *blightdev;
+ struct backlight_properties props;
+ unsigned long max, now, power;
+
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max))
+ return -EIO;
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
+ return -EIO;
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
+ return -EIO;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.max_brightness = max;
+ props.type = BACKLIGHT_PLATFORM;
+ blightdev = backlight_device_register("ideapad",
+ &priv->platform_device->dev,
+ priv,
+ &ideapad_backlight_ops,
+ &props);
+ if (IS_ERR(blightdev)) {
+ pr_err("Could not register backlight device\n");
+ return PTR_ERR(blightdev);
+ }
+
+ priv->blightdev = blightdev;
+ blightdev->props.brightness = now;
+ blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
+ backlight_update_status(blightdev);
+
+ return 0;
+}
+
+static void ideapad_backlight_exit(struct ideapad_private *priv)
+{
+ backlight_device_unregister(priv->blightdev);
+ priv->blightdev = NULL;
+}
+
+static void ideapad_backlight_notify_power(struct ideapad_private *priv)
+{
+ unsigned long power;
+ struct backlight_device *blightdev = priv->blightdev;
+
+ if (!blightdev)
+ return;
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
+ return;
+ blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
+}
+
+static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
+{
+ unsigned long now;
+
+ /* if we control brightness via acpi video driver */
+ if (priv->blightdev == NULL) {
+ read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
+ return;
+ }
+
+ backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
+}
+
+/*
+ * module init/exit
+ */
+static void ideapad_sync_touchpad_state(struct ideapad_private *priv)
+{
+ unsigned long value;
+
+ /* Without reading from EC touchpad LED doesn't switch state */
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value)) {
+ /* Some IdeaPads don't really turn off touchpad - they only
+ * switch the LED state. We (de)activate KBC AUX port to turn
+ * touchpad off and on. We send KEY_TOUCHPAD_OFF and
+ * KEY_TOUCHPAD_ON to not to get out of sync with LED */
+ unsigned char param;
+ i8042_command(&param, value ? I8042_CMD_AUX_ENABLE :
+ I8042_CMD_AUX_DISABLE);
+ ideapad_input_report(priv, value ? 67 : 66);
+ }
+}
+
+static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct ideapad_private *priv = data;
+ unsigned long vpc1, vpc2, vpc_bit;
+
+ if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
+ return;
+ if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
+ return;
+
+ vpc1 = (vpc2 << 8) | vpc1;
+ for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
+ if (test_bit(vpc_bit, &vpc1)) {
+ switch (vpc_bit) {
+ case 9:
+ ideapad_sync_rfk_state(priv);
+ break;
+ case 13:
+ case 11:
+ case 7:
+ case 6:
+ ideapad_input_report(priv, vpc_bit);
+ break;
+ case 5:
+ ideapad_sync_touchpad_state(priv);
+ break;
+ case 4:
+ ideapad_backlight_notify_brightness(priv);
+ break;
+ case 3:
+ ideapad_input_novokey(priv);
+ break;
+ case 2:
+ ideapad_backlight_notify_power(priv);
+ break;
+ case 0:
+ ideapad_check_special_buttons(priv);
+ break;
+ default:
+ pr_info("Unknown event: %lu\n", vpc_bit);
+ }
+ }
+ }
+}
+
+/*
+ * Some ideapads don't have a hardware rfkill switch, reading VPCCMD_R_RF
+ * always results in 0 on these models, causing ideapad_laptop to wrongly
+ * report all radios as hardware-blocked.
+ */
+static const struct dmi_system_id no_hw_rfkill_list[] = {
+ {
+ .ident = "Lenovo G40-30",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G40-30"),
+ },
+ },
+ {
+ .ident = "Lenovo G50-30",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G50-30"),
+ },
+ },
+ {
+ .ident = "Lenovo Yoga 2 11 / 13 / Pro",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2"),
+ },
+ },
+ {
+ .ident = "Lenovo Yoga 3 Pro 1370",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 3 Pro-1370"),
+ },
+ },
+ {}
+};
+
+static int ideapad_acpi_add(struct platform_device *pdev)
+{
+ int ret, i;
+ int cfg;
+ struct ideapad_private *priv;
+ struct acpi_device *adev;
+
+ ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
+ if (ret)
+ return -ENODEV;
+
+ if (read_method_int(adev->handle, "_CFG", &cfg))
+ return -ENODEV;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ dev_set_drvdata(&pdev->dev, priv);
+ priv->cfg = cfg;
+ priv->adev = adev;
+ priv->platform_device = pdev;
+ priv->has_hw_rfkill_switch = !dmi_check_system(no_hw_rfkill_list);
+
+ ret = ideapad_sysfs_init(priv);
+ if (ret)
+ return ret;
+
+ ret = ideapad_debugfs_init(priv);
+ if (ret)
+ goto debugfs_failed;
+
+ ret = ideapad_input_init(priv);
+ if (ret)
+ goto input_failed;
+
+ /*
+ * On some models without a hw-switch (the yoga 2 13 at least)
+ * VPCCMD_W_RF must be explicitly set to 1 for the wifi to work.
+ */
+ if (!priv->has_hw_rfkill_switch)
+ write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);
+
+ for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
+ if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
+ ideapad_register_rfkill(priv, i);
+
+ ideapad_sync_rfk_state(priv);
+ ideapad_sync_touchpad_state(priv);
+
+ if (!acpi_video_backlight_support()) {
+ ret = ideapad_backlight_init(priv);
+ if (ret && ret != -ENODEV)
+ goto backlight_failed;
+ }
+ ret = acpi_install_notify_handler(adev->handle,
+ ACPI_DEVICE_NOTIFY, ideapad_acpi_notify, priv);
+ if (ret)
+ goto notification_failed;
+
+ return 0;
+notification_failed:
+ ideapad_backlight_exit(priv);
+backlight_failed:
+ for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
+ ideapad_unregister_rfkill(priv, i);
+ ideapad_input_exit(priv);
+input_failed:
+ ideapad_debugfs_exit(priv);
+debugfs_failed:
+ ideapad_sysfs_exit(priv);
+ return ret;
+}
+
+static int ideapad_acpi_remove(struct platform_device *pdev)
+{
+ struct ideapad_private *priv = dev_get_drvdata(&pdev->dev);
+ int i;
+
+ acpi_remove_notify_handler(priv->adev->handle,
+ ACPI_DEVICE_NOTIFY, ideapad_acpi_notify);
+ ideapad_backlight_exit(priv);
+ for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
+ ideapad_unregister_rfkill(priv, i);
+ ideapad_input_exit(priv);
+ ideapad_debugfs_exit(priv);
+ ideapad_sysfs_exit(priv);
+ dev_set_drvdata(&pdev->dev, NULL);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int ideapad_acpi_resume(struct device *device)
+{
+ struct ideapad_private *priv;
+
+ if (!device)
+ return -EINVAL;
+ priv = dev_get_drvdata(device);
+
+ ideapad_sync_rfk_state(priv);
+ ideapad_sync_touchpad_state(priv);
+ return 0;
+}
+#endif
+static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);
+
+static const struct acpi_device_id ideapad_device_ids[] = {
+ { "VPC2004", 0},
+ { "", 0},
+};
+MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
+
+static struct platform_driver ideapad_acpi_driver = {
+ .probe = ideapad_acpi_add,
+ .remove = ideapad_acpi_remove,
+ .driver = {
+ .name = "ideapad_acpi",
+ .pm = &ideapad_pm,
+ .acpi_match_table = ACPI_PTR(ideapad_device_ids),
+ },
+};
+
+module_platform_driver(ideapad_acpi_driver);
+
+MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
+MODULE_DESCRIPTION("IdeaPad ACPI Extras");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/intel-rst.c b/drivers/platform/x86/intel-rst.c
new file mode 100644
index 000000000..7344d841f
--- /dev/null
+++ b/drivers/platform/x86/intel-rst.c
@@ -0,0 +1,161 @@
+/*
+ * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/acpi.h>
+
+MODULE_LICENSE("GPL");
+
+static ssize_t irst_show_wakeup_events(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct acpi_device *acpi;
+ unsigned long long value;
+ acpi_status status;
+
+ acpi = to_acpi_device(dev);
+
+ status = acpi_evaluate_integer(acpi->handle, "GFFS", NULL, &value);
+ if (ACPI_FAILURE(status))
+ return -EINVAL;
+
+ return sprintf(buf, "%lld\n", value);
+}
+
+static ssize_t irst_store_wakeup_events(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct acpi_device *acpi;
+ acpi_status status;
+ unsigned long value;
+ int error;
+
+ acpi = to_acpi_device(dev);
+
+ error = kstrtoul(buf, 0, &value);
+
+ if (error)
+ return error;
+
+ status = acpi_execute_simple_method(acpi->handle, "SFFS", value);
+
+ if (ACPI_FAILURE(status))
+ return -EINVAL;
+
+ return count;
+}
+
+static struct device_attribute irst_wakeup_attr = {
+ .attr = { .name = "wakeup_events", .mode = 0600 },
+ .show = irst_show_wakeup_events,
+ .store = irst_store_wakeup_events
+};
+
+static ssize_t irst_show_wakeup_time(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct acpi_device *acpi;
+ unsigned long long value;
+ acpi_status status;
+
+ acpi = to_acpi_device(dev);
+
+ status = acpi_evaluate_integer(acpi->handle, "GFTV", NULL, &value);
+ if (ACPI_FAILURE(status))
+ return -EINVAL;
+
+ return sprintf(buf, "%lld\n", value);
+}
+
+static ssize_t irst_store_wakeup_time(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct acpi_device *acpi;
+ acpi_status status;
+ unsigned long value;
+ int error;
+
+ acpi = to_acpi_device(dev);
+
+ error = kstrtoul(buf, 0, &value);
+
+ if (error)
+ return error;
+
+ status = acpi_execute_simple_method(acpi->handle, "SFTV", value);
+
+ if (ACPI_FAILURE(status))
+ return -EINVAL;
+
+ return count;
+}
+
+static struct device_attribute irst_timeout_attr = {
+ .attr = { .name = "wakeup_time", .mode = 0600 },
+ .show = irst_show_wakeup_time,
+ .store = irst_store_wakeup_time
+};
+
+static int irst_add(struct acpi_device *acpi)
+{
+ int error;
+
+ error = device_create_file(&acpi->dev, &irst_timeout_attr);
+ if (unlikely(error))
+ return error;
+
+ error = device_create_file(&acpi->dev, &irst_wakeup_attr);
+ if (unlikely(error))
+ device_remove_file(&acpi->dev, &irst_timeout_attr);
+
+ return error;
+}
+
+static int irst_remove(struct acpi_device *acpi)
+{
+ device_remove_file(&acpi->dev, &irst_wakeup_attr);
+ device_remove_file(&acpi->dev, &irst_timeout_attr);
+
+ return 0;
+}
+
+static const struct acpi_device_id irst_ids[] = {
+ {"INT3392", 0},
+ {"", 0}
+};
+
+static struct acpi_driver irst_driver = {
+ .owner = THIS_MODULE,
+ .name = "intel_rapid_start",
+ .class = "intel_rapid_start",
+ .ids = irst_ids,
+ .ops = {
+ .add = irst_add,
+ .remove = irst_remove,
+ },
+};
+
+module_acpi_driver(irst_driver);
+
+MODULE_DEVICE_TABLE(acpi, irst_ids);
diff --git a/drivers/platform/x86/intel-smartconnect.c b/drivers/platform/x86/intel-smartconnect.c
new file mode 100644
index 000000000..04cf5dffd
--- /dev/null
+++ b/drivers/platform/x86/intel-smartconnect.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+
+MODULE_LICENSE("GPL");
+
+static int smartconnect_acpi_init(struct acpi_device *acpi)
+{
+ unsigned long long value;
+ acpi_status status;
+
+ status = acpi_evaluate_integer(acpi->handle, "GAOS", NULL, &value);
+ if (!ACPI_SUCCESS(status))
+ return -EINVAL;
+
+ if (value & 0x1) {
+ dev_info(&acpi->dev, "Disabling Intel Smart Connect\n");
+ status = acpi_execute_simple_method(acpi->handle, "SAOS", 0);
+ }
+
+ return 0;
+}
+
+static const struct acpi_device_id smartconnect_ids[] = {
+ {"INT33A0", 0},
+ {"", 0}
+};
+
+static struct acpi_driver smartconnect_driver = {
+ .owner = THIS_MODULE,
+ .name = "intel_smart_connect",
+ .class = "intel_smart_connect",
+ .ids = smartconnect_ids,
+ .ops = {
+ .add = smartconnect_acpi_init,
+ },
+};
+
+module_acpi_driver(smartconnect_driver);
+
+MODULE_DEVICE_TABLE(acpi, smartconnect_ids);
diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c
new file mode 100644
index 000000000..e2065e06a
--- /dev/null
+++ b/drivers/platform/x86/intel_ips.c
@@ -0,0 +1,1738 @@
+/*
+ * Copyright (c) 2009-2010 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Authors:
+ * Jesse Barnes <jbarnes@virtuousgeek.org>
+ */
+
+/*
+ * Some Intel Ibex Peak based platforms support so-called "intelligent
+ * power sharing", which allows the CPU and GPU to cooperate to maximize
+ * performance within a given TDP (thermal design point). This driver
+ * performs the coordination between the CPU and GPU, monitors thermal and
+ * power statistics in the platform, and initializes power monitoring
+ * hardware. It also provides a few tunables to control behavior. Its
+ * primary purpose is to safely allow CPU and GPU turbo modes to be enabled
+ * by tracking power and thermal budget; secondarily it can boost turbo
+ * performance by allocating more power or thermal budget to the CPU or GPU
+ * based on available headroom and activity.
+ *
+ * The basic algorithm is driven by a 5s moving average of temperature. If
+ * thermal headroom is available, the CPU and/or GPU power clamps may be
+ * adjusted upwards. If we hit the thermal ceiling or a thermal trigger,
+ * we scale back the clamp. Aside from trigger events (when we're critically
+ * close or over our TDP) we don't adjust the clamps more than once every
+ * five seconds.
+ *
+ * The thermal device (device 31, function 6) has a set of registers that
+ * are updated by the ME firmware. The ME should also take the clamp values
+ * written to those registers and write them to the CPU, but we currently
+ * bypass that functionality and write the CPU MSR directly.
+ *
+ * UNSUPPORTED:
+ * - dual MCP configs
+ *
+ * TODO:
+ * - handle CPU hotplug
+ * - provide turbo enable/disable api
+ *
+ * Related documents:
+ * - CDI 403777, 403778 - Auburndale EDS vol 1 & 2
+ * - CDI 401376 - Ibex Peak EDS
+ * - ref 26037, 26641 - IPS BIOS spec
+ * - ref 26489 - Nehalem BIOS writer's guide
+ * - ref 26921 - Ibex Peak BIOS Specification
+ */
+
+#include <linux/debugfs.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/sched.h>
+#include <linux/seq_file.h>
+#include <linux/string.h>
+#include <linux/tick.h>
+#include <linux/timer.h>
+#include <linux/dmi.h>
+#include <drm/i915_drm.h>
+#include <asm/msr.h>
+#include <asm/processor.h>
+#include "intel_ips.h"
+
+#include <asm-generic/io-64-nonatomic-lo-hi.h>
+
+#define PCI_DEVICE_ID_INTEL_THERMAL_SENSOR 0x3b32
+
+/*
+ * Package level MSRs for monitor/control
+ */
+#define PLATFORM_INFO 0xce
+#define PLATFORM_TDP (1<<29)
+#define PLATFORM_RATIO (1<<28)
+
+#define IA32_MISC_ENABLE 0x1a0
+#define IA32_MISC_TURBO_EN (1ULL<<38)
+
+#define TURBO_POWER_CURRENT_LIMIT 0x1ac
+#define TURBO_TDC_OVR_EN (1UL<<31)
+#define TURBO_TDC_MASK (0x000000007fff0000UL)
+#define TURBO_TDC_SHIFT (16)
+#define TURBO_TDP_OVR_EN (1UL<<15)
+#define TURBO_TDP_MASK (0x0000000000003fffUL)
+
+/*
+ * Core/thread MSRs for monitoring
+ */
+#define IA32_PERF_CTL 0x199
+#define IA32_PERF_TURBO_DIS (1ULL<<32)
+
+/*
+ * Thermal PCI device regs
+ */
+#define THM_CFG_TBAR 0x10
+#define THM_CFG_TBAR_HI 0x14
+
+#define THM_TSIU 0x00
+#define THM_TSE 0x01
+#define TSE_EN 0xb8
+#define THM_TSS 0x02
+#define THM_TSTR 0x03
+#define THM_TSTTP 0x04
+#define THM_TSCO 0x08
+#define THM_TSES 0x0c
+#define THM_TSGPEN 0x0d
+#define TSGPEN_HOT_LOHI (1<<1)
+#define TSGPEN_CRIT_LOHI (1<<2)
+#define THM_TSPC 0x0e
+#define THM_PPEC 0x10
+#define THM_CTA 0x12
+#define THM_PTA 0x14
+#define PTA_SLOPE_MASK (0xff00)
+#define PTA_SLOPE_SHIFT 8
+#define PTA_OFFSET_MASK (0x00ff)
+#define THM_MGTA 0x16
+#define MGTA_SLOPE_MASK (0xff00)
+#define MGTA_SLOPE_SHIFT 8
+#define MGTA_OFFSET_MASK (0x00ff)
+#define THM_TRC 0x1a
+#define TRC_CORE2_EN (1<<15)
+#define TRC_THM_EN (1<<12)
+#define TRC_C6_WAR (1<<8)
+#define TRC_CORE1_EN (1<<7)
+#define TRC_CORE_PWR (1<<6)
+#define TRC_PCH_EN (1<<5)
+#define TRC_MCH_EN (1<<4)
+#define TRC_DIMM4 (1<<3)
+#define TRC_DIMM3 (1<<2)
+#define TRC_DIMM2 (1<<1)
+#define TRC_DIMM1 (1<<0)
+#define THM_TES 0x20
+#define THM_TEN 0x21
+#define TEN_UPDATE_EN 1
+#define THM_PSC 0x24
+#define PSC_NTG (1<<0) /* No GFX turbo support */
+#define PSC_NTPC (1<<1) /* No CPU turbo support */
+#define PSC_PP_DEF (0<<2) /* Perf policy up to driver */
+#define PSP_PP_PC (1<<2) /* BIOS prefers CPU perf */
+#define PSP_PP_BAL (2<<2) /* BIOS wants balanced perf */
+#define PSP_PP_GFX (3<<2) /* BIOS prefers GFX perf */
+#define PSP_PBRT (1<<4) /* BIOS run time support */
+#define THM_CTV1 0x30
+#define CTV_TEMP_ERROR (1<<15)
+#define CTV_TEMP_MASK 0x3f
+#define CTV_
+#define THM_CTV2 0x32
+#define THM_CEC 0x34 /* undocumented power accumulator in joules */
+#define THM_AE 0x3f
+#define THM_HTS 0x50 /* 32 bits */
+#define HTS_PCPL_MASK (0x7fe00000)
+#define HTS_PCPL_SHIFT 21
+#define HTS_GPL_MASK (0x001ff000)
+#define HTS_GPL_SHIFT 12
+#define HTS_PP_MASK (0x00000c00)
+#define HTS_PP_SHIFT 10
+#define HTS_PP_DEF 0
+#define HTS_PP_PROC 1
+#define HTS_PP_BAL 2
+#define HTS_PP_GFX 3
+#define HTS_PCTD_DIS (1<<9)
+#define HTS_GTD_DIS (1<<8)
+#define HTS_PTL_MASK (0x000000fe)
+#define HTS_PTL_SHIFT 1
+#define HTS_NVV (1<<0)
+#define THM_HTSHI 0x54 /* 16 bits */
+#define HTS2_PPL_MASK (0x03ff)
+#define HTS2_PRST_MASK (0x3c00)
+#define HTS2_PRST_SHIFT 10
+#define HTS2_PRST_UNLOADED 0
+#define HTS2_PRST_RUNNING 1
+#define HTS2_PRST_TDISOP 2 /* turbo disabled due to power */
+#define HTS2_PRST_TDISHT 3 /* turbo disabled due to high temp */
+#define HTS2_PRST_TDISUSR 4 /* user disabled turbo */
+#define HTS2_PRST_TDISPLAT 5 /* platform disabled turbo */
+#define HTS2_PRST_TDISPM 6 /* power management disabled turbo */
+#define HTS2_PRST_TDISERR 7 /* some kind of error disabled turbo */
+#define THM_PTL 0x56
+#define THM_MGTV 0x58
+#define TV_MASK 0x000000000000ff00
+#define TV_SHIFT 8
+#define THM_PTV 0x60
+#define PTV_MASK 0x00ff
+#define THM_MMGPC 0x64
+#define THM_MPPC 0x66
+#define THM_MPCPC 0x68
+#define THM_TSPIEN 0x82
+#define TSPIEN_AUX_LOHI (1<<0)
+#define TSPIEN_HOT_LOHI (1<<1)
+#define TSPIEN_CRIT_LOHI (1<<2)
+#define TSPIEN_AUX2_LOHI (1<<3)
+#define THM_TSLOCK 0x83
+#define THM_ATR 0x84
+#define THM_TOF 0x87
+#define THM_STS 0x98
+#define STS_PCPL_MASK (0x7fe00000)
+#define STS_PCPL_SHIFT 21
+#define STS_GPL_MASK (0x001ff000)
+#define STS_GPL_SHIFT 12
+#define STS_PP_MASK (0x00000c00)
+#define STS_PP_SHIFT 10
+#define STS_PP_DEF 0
+#define STS_PP_PROC 1
+#define STS_PP_BAL 2
+#define STS_PP_GFX 3
+#define STS_PCTD_DIS (1<<9)
+#define STS_GTD_DIS (1<<8)
+#define STS_PTL_MASK (0x000000fe)
+#define STS_PTL_SHIFT 1
+#define STS_NVV (1<<0)
+#define THM_SEC 0x9c
+#define SEC_ACK (1<<0)
+#define THM_TC3 0xa4
+#define THM_TC1 0xa8
+#define STS_PPL_MASK (0x0003ff00)
+#define STS_PPL_SHIFT 16
+#define THM_TC2 0xac
+#define THM_DTV 0xb0
+#define THM_ITV 0xd8
+#define ITV_ME_SEQNO_MASK 0x00ff0000 /* ME should update every ~200ms */
+#define ITV_ME_SEQNO_SHIFT (16)
+#define ITV_MCH_TEMP_MASK 0x0000ff00
+#define ITV_MCH_TEMP_SHIFT (8)
+#define ITV_PCH_TEMP_MASK 0x000000ff
+
+#define thm_readb(off) readb(ips->regmap + (off))
+#define thm_readw(off) readw(ips->regmap + (off))
+#define thm_readl(off) readl(ips->regmap + (off))
+#define thm_readq(off) readq(ips->regmap + (off))
+
+#define thm_writeb(off, val) writeb((val), ips->regmap + (off))
+#define thm_writew(off, val) writew((val), ips->regmap + (off))
+#define thm_writel(off, val) writel((val), ips->regmap + (off))
+
+static const int IPS_ADJUST_PERIOD = 5000; /* ms */
+static bool late_i915_load = false;
+
+/* For initial average collection */
+static const int IPS_SAMPLE_PERIOD = 200; /* ms */
+static const int IPS_SAMPLE_WINDOW = 5000; /* 5s moving window of samples */
+#define IPS_SAMPLE_COUNT (IPS_SAMPLE_WINDOW / IPS_SAMPLE_PERIOD)
+
+/* Per-SKU limits */
+struct ips_mcp_limits {
+ int cpu_family;
+ int cpu_model; /* includes extended model... */
+ int mcp_power_limit; /* mW units */
+ int core_power_limit;
+ int mch_power_limit;
+ int core_temp_limit; /* degrees C */
+ int mch_temp_limit;
+};
+
+/* Max temps are -10 degrees C to avoid PROCHOT# */
+
+static struct ips_mcp_limits ips_sv_limits = {
+ .mcp_power_limit = 35000,
+ .core_power_limit = 29000,
+ .mch_power_limit = 20000,
+ .core_temp_limit = 95,
+ .mch_temp_limit = 90
+};
+
+static struct ips_mcp_limits ips_lv_limits = {
+ .mcp_power_limit = 25000,
+ .core_power_limit = 21000,
+ .mch_power_limit = 13000,
+ .core_temp_limit = 95,
+ .mch_temp_limit = 90
+};
+
+static struct ips_mcp_limits ips_ulv_limits = {
+ .mcp_power_limit = 18000,
+ .core_power_limit = 14000,
+ .mch_power_limit = 11000,
+ .core_temp_limit = 95,
+ .mch_temp_limit = 90
+};
+
+struct ips_driver {
+ struct pci_dev *dev;
+ void *regmap;
+ struct task_struct *monitor;
+ struct task_struct *adjust;
+ struct dentry *debug_root;
+
+ /* Average CPU core temps (all averages in .01 degrees C for precision) */
+ u16 ctv1_avg_temp;
+ u16 ctv2_avg_temp;
+ /* GMCH average */
+ u16 mch_avg_temp;
+ /* Average for the CPU (both cores?) */
+ u16 mcp_avg_temp;
+ /* Average power consumption (in mW) */
+ u32 cpu_avg_power;
+ u32 mch_avg_power;
+
+ /* Offset values */
+ u16 cta_val;
+ u16 pta_val;
+ u16 mgta_val;
+
+ /* Maximums & prefs, protected by turbo status lock */
+ spinlock_t turbo_status_lock;
+ u16 mcp_temp_limit;
+ u16 mcp_power_limit;
+ u16 core_power_limit;
+ u16 mch_power_limit;
+ bool cpu_turbo_enabled;
+ bool __cpu_turbo_on;
+ bool gpu_turbo_enabled;
+ bool __gpu_turbo_on;
+ bool gpu_preferred;
+ bool poll_turbo_status;
+ bool second_cpu;
+ bool turbo_toggle_allowed;
+ struct ips_mcp_limits *limits;
+
+ /* Optional MCH interfaces for if i915 is in use */
+ unsigned long (*read_mch_val)(void);
+ bool (*gpu_raise)(void);
+ bool (*gpu_lower)(void);
+ bool (*gpu_busy)(void);
+ bool (*gpu_turbo_disable)(void);
+
+ /* For restoration at unload */
+ u64 orig_turbo_limit;
+ u64 orig_turbo_ratios;
+};
+
+static bool
+ips_gpu_turbo_enabled(struct ips_driver *ips);
+
+/**
+ * ips_cpu_busy - is CPU busy?
+ * @ips: IPS driver struct
+ *
+ * Check CPU for load to see whether we should increase its thermal budget.
+ *
+ * RETURNS:
+ * True if the CPU could use more power, false otherwise.
+ */
+static bool ips_cpu_busy(struct ips_driver *ips)
+{
+ if ((avenrun[0] >> FSHIFT) > 1)
+ return true;
+
+ return false;
+}
+
+/**
+ * ips_cpu_raise - raise CPU power clamp
+ * @ips: IPS driver struct
+ *
+ * Raise the CPU power clamp by %IPS_CPU_STEP, in accordance with TDP for
+ * this platform.
+ *
+ * We do this by adjusting the TURBO_POWER_CURRENT_LIMIT MSR upwards (as
+ * long as we haven't hit the TDP limit for the SKU).
+ */
+static void ips_cpu_raise(struct ips_driver *ips)
+{
+ u64 turbo_override;
+ u16 cur_tdp_limit, new_tdp_limit;
+
+ if (!ips->cpu_turbo_enabled)
+ return;
+
+ rdmsrl(TURBO_POWER_CURRENT_LIMIT, turbo_override);
+
+ cur_tdp_limit = turbo_override & TURBO_TDP_MASK;
+ new_tdp_limit = cur_tdp_limit + 8; /* 1W increase */
+
+ /* Clamp to SKU TDP limit */
+ if (((new_tdp_limit * 10) / 8) > ips->core_power_limit)
+ new_tdp_limit = cur_tdp_limit;
+
+ thm_writew(THM_MPCPC, (new_tdp_limit * 10) / 8);
+
+ turbo_override |= TURBO_TDC_OVR_EN | TURBO_TDP_OVR_EN;
+ wrmsrl(TURBO_POWER_CURRENT_LIMIT, turbo_override);
+
+ turbo_override &= ~TURBO_TDP_MASK;
+ turbo_override |= new_tdp_limit;
+
+ wrmsrl(TURBO_POWER_CURRENT_LIMIT, turbo_override);
+}
+
+/**
+ * ips_cpu_lower - lower CPU power clamp
+ * @ips: IPS driver struct
+ *
+ * Lower CPU power clamp b %IPS_CPU_STEP if possible.
+ *
+ * We do this by adjusting the TURBO_POWER_CURRENT_LIMIT MSR down, going
+ * as low as the platform limits will allow (though we could go lower there
+ * wouldn't be much point).
+ */
+static void ips_cpu_lower(struct ips_driver *ips)
+{
+ u64 turbo_override;
+ u16 cur_limit, new_limit;
+
+ rdmsrl(TURBO_POWER_CURRENT_LIMIT, turbo_override);
+
+ cur_limit = turbo_override & TURBO_TDP_MASK;
+ new_limit = cur_limit - 8; /* 1W decrease */
+
+ /* Clamp to SKU TDP limit */
+ if (new_limit < (ips->orig_turbo_limit & TURBO_TDP_MASK))
+ new_limit = ips->orig_turbo_limit & TURBO_TDP_MASK;
+
+ thm_writew(THM_MPCPC, (new_limit * 10) / 8);
+
+ turbo_override |= TURBO_TDC_OVR_EN | TURBO_TDP_OVR_EN;
+ wrmsrl(TURBO_POWER_CURRENT_LIMIT, turbo_override);
+
+ turbo_override &= ~TURBO_TDP_MASK;
+ turbo_override |= new_limit;
+
+ wrmsrl(TURBO_POWER_CURRENT_LIMIT, turbo_override);
+}
+
+/**
+ * do_enable_cpu_turbo - internal turbo enable function
+ * @data: unused
+ *
+ * Internal function for actually updating MSRs. When we enable/disable
+ * turbo, we need to do it on each CPU; this function is the one called
+ * by on_each_cpu() when needed.
+ */
+static void do_enable_cpu_turbo(void *data)
+{
+ u64 perf_ctl;
+
+ rdmsrl(IA32_PERF_CTL, perf_ctl);
+ if (perf_ctl & IA32_PERF_TURBO_DIS) {
+ perf_ctl &= ~IA32_PERF_TURBO_DIS;
+ wrmsrl(IA32_PERF_CTL, perf_ctl);
+ }
+}
+
+/**
+ * ips_enable_cpu_turbo - enable turbo mode on all CPUs
+ * @ips: IPS driver struct
+ *
+ * Enable turbo mode by clearing the disable bit in IA32_PERF_CTL on
+ * all logical threads.
+ */
+static void ips_enable_cpu_turbo(struct ips_driver *ips)
+{
+ /* Already on, no need to mess with MSRs */
+ if (ips->__cpu_turbo_on)
+ return;
+
+ if (ips->turbo_toggle_allowed)
+ on_each_cpu(do_enable_cpu_turbo, ips, 1);
+
+ ips->__cpu_turbo_on = true;
+}
+
+/**
+ * do_disable_cpu_turbo - internal turbo disable function
+ * @data: unused
+ *
+ * Internal function for actually updating MSRs. When we enable/disable
+ * turbo, we need to do it on each CPU; this function is the one called
+ * by on_each_cpu() when needed.
+ */
+static void do_disable_cpu_turbo(void *data)
+{
+ u64 perf_ctl;
+
+ rdmsrl(IA32_PERF_CTL, perf_ctl);
+ if (!(perf_ctl & IA32_PERF_TURBO_DIS)) {
+ perf_ctl |= IA32_PERF_TURBO_DIS;
+ wrmsrl(IA32_PERF_CTL, perf_ctl);
+ }
+}
+
+/**
+ * ips_disable_cpu_turbo - disable turbo mode on all CPUs
+ * @ips: IPS driver struct
+ *
+ * Disable turbo mode by setting the disable bit in IA32_PERF_CTL on
+ * all logical threads.
+ */
+static void ips_disable_cpu_turbo(struct ips_driver *ips)
+{
+ /* Already off, leave it */
+ if (!ips->__cpu_turbo_on)
+ return;
+
+ if (ips->turbo_toggle_allowed)
+ on_each_cpu(do_disable_cpu_turbo, ips, 1);
+
+ ips->__cpu_turbo_on = false;
+}
+
+/**
+ * ips_gpu_busy - is GPU busy?
+ * @ips: IPS driver struct
+ *
+ * Check GPU for load to see whether we should increase its thermal budget.
+ * We need to call into the i915 driver in this case.
+ *
+ * RETURNS:
+ * True if the GPU could use more power, false otherwise.
+ */
+static bool ips_gpu_busy(struct ips_driver *ips)
+{
+ if (!ips_gpu_turbo_enabled(ips))
+ return false;
+
+ return ips->gpu_busy();
+}
+
+/**
+ * ips_gpu_raise - raise GPU power clamp
+ * @ips: IPS driver struct
+ *
+ * Raise the GPU frequency/power if possible. We need to call into the
+ * i915 driver in this case.
+ */
+static void ips_gpu_raise(struct ips_driver *ips)
+{
+ if (!ips_gpu_turbo_enabled(ips))
+ return;
+
+ if (!ips->gpu_raise())
+ ips->gpu_turbo_enabled = false;
+
+ return;
+}
+
+/**
+ * ips_gpu_lower - lower GPU power clamp
+ * @ips: IPS driver struct
+ *
+ * Lower GPU frequency/power if possible. Need to call i915.
+ */
+static void ips_gpu_lower(struct ips_driver *ips)
+{
+ if (!ips_gpu_turbo_enabled(ips))
+ return;
+
+ if (!ips->gpu_lower())
+ ips->gpu_turbo_enabled = false;
+
+ return;
+}
+
+/**
+ * ips_enable_gpu_turbo - notify the gfx driver turbo is available
+ * @ips: IPS driver struct
+ *
+ * Call into the graphics driver indicating that it can safely use
+ * turbo mode.
+ */
+static void ips_enable_gpu_turbo(struct ips_driver *ips)
+{
+ if (ips->__gpu_turbo_on)
+ return;
+ ips->__gpu_turbo_on = true;
+}
+
+/**
+ * ips_disable_gpu_turbo - notify the gfx driver to disable turbo mode
+ * @ips: IPS driver struct
+ *
+ * Request that the graphics driver disable turbo mode.
+ */
+static void ips_disable_gpu_turbo(struct ips_driver *ips)
+{
+ /* Avoid calling i915 if turbo is already disabled */
+ if (!ips->__gpu_turbo_on)
+ return;
+
+ if (!ips->gpu_turbo_disable())
+ dev_err(&ips->dev->dev, "failed to disable graphics turbo\n");
+ else
+ ips->__gpu_turbo_on = false;
+}
+
+/**
+ * mcp_exceeded - check whether we're outside our thermal & power limits
+ * @ips: IPS driver struct
+ *
+ * Check whether the MCP is over its thermal or power budget.
+ */
+static bool mcp_exceeded(struct ips_driver *ips)
+{
+ unsigned long flags;
+ bool ret = false;
+ u32 temp_limit;
+ u32 avg_power;
+
+ spin_lock_irqsave(&ips->turbo_status_lock, flags);
+
+ temp_limit = ips->mcp_temp_limit * 100;
+ if (ips->mcp_avg_temp > temp_limit)
+ ret = true;
+
+ avg_power = ips->cpu_avg_power + ips->mch_avg_power;
+ if (avg_power > ips->mcp_power_limit)
+ ret = true;
+
+ spin_unlock_irqrestore(&ips->turbo_status_lock, flags);
+
+ return ret;
+}
+
+/**
+ * cpu_exceeded - check whether a CPU core is outside its limits
+ * @ips: IPS driver struct
+ * @cpu: CPU number to check
+ *
+ * Check a given CPU's average temp or power is over its limit.
+ */
+static bool cpu_exceeded(struct ips_driver *ips, int cpu)
+{
+ unsigned long flags;
+ int avg;
+ bool ret = false;
+
+ spin_lock_irqsave(&ips->turbo_status_lock, flags);
+ avg = cpu ? ips->ctv2_avg_temp : ips->ctv1_avg_temp;
+ if (avg > (ips->limits->core_temp_limit * 100))
+ ret = true;
+ if (ips->cpu_avg_power > ips->core_power_limit * 100)
+ ret = true;
+ spin_unlock_irqrestore(&ips->turbo_status_lock, flags);
+
+ if (ret)
+ dev_info(&ips->dev->dev,
+ "CPU power or thermal limit exceeded\n");
+
+ return ret;
+}
+
+/**
+ * mch_exceeded - check whether the GPU is over budget
+ * @ips: IPS driver struct
+ *
+ * Check the MCH temp & power against their maximums.
+ */
+static bool mch_exceeded(struct ips_driver *ips)
+{
+ unsigned long flags;
+ bool ret = false;
+
+ spin_lock_irqsave(&ips->turbo_status_lock, flags);
+ if (ips->mch_avg_temp > (ips->limits->mch_temp_limit * 100))
+ ret = true;
+ if (ips->mch_avg_power > ips->mch_power_limit)
+ ret = true;
+ spin_unlock_irqrestore(&ips->turbo_status_lock, flags);
+
+ return ret;
+}
+
+/**
+ * verify_limits - verify BIOS provided limits
+ * @ips: IPS structure
+ *
+ * BIOS can optionally provide non-default limits for power and temp. Check
+ * them here and use the defaults if the BIOS values are not provided or
+ * are otherwise unusable.
+ */
+static void verify_limits(struct ips_driver *ips)
+{
+ if (ips->mcp_power_limit < ips->limits->mcp_power_limit ||
+ ips->mcp_power_limit > 35000)
+ ips->mcp_power_limit = ips->limits->mcp_power_limit;
+
+ if (ips->mcp_temp_limit < ips->limits->core_temp_limit ||
+ ips->mcp_temp_limit < ips->limits->mch_temp_limit ||
+ ips->mcp_temp_limit > 150)
+ ips->mcp_temp_limit = min(ips->limits->core_temp_limit,
+ ips->limits->mch_temp_limit);
+}
+
+/**
+ * update_turbo_limits - get various limits & settings from regs
+ * @ips: IPS driver struct
+ *
+ * Update the IPS power & temp limits, along with turbo enable flags,
+ * based on latest register contents.
+ *
+ * Used at init time and for runtime BIOS support, which requires polling
+ * the regs for updates (as a result of AC->DC transition for example).
+ *
+ * LOCKING:
+ * Caller must hold turbo_status_lock (outside of init)
+ */
+static void update_turbo_limits(struct ips_driver *ips)
+{
+ u32 hts = thm_readl(THM_HTS);
+
+ ips->cpu_turbo_enabled = !(hts & HTS_PCTD_DIS);
+ /*
+ * Disable turbo for now, until we can figure out why the power figures
+ * are wrong
+ */
+ ips->cpu_turbo_enabled = false;
+
+ if (ips->gpu_busy)
+ ips->gpu_turbo_enabled = !(hts & HTS_GTD_DIS);
+
+ ips->core_power_limit = thm_readw(THM_MPCPC);
+ ips->mch_power_limit = thm_readw(THM_MMGPC);
+ ips->mcp_temp_limit = thm_readw(THM_PTL);
+ ips->mcp_power_limit = thm_readw(THM_MPPC);
+
+ verify_limits(ips);
+ /* Ignore BIOS CPU vs GPU pref */
+}
+
+/**
+ * ips_adjust - adjust power clamp based on thermal state
+ * @data: ips driver structure
+ *
+ * Wake up every 5s or so and check whether we should adjust the power clamp.
+ * Check CPU and GPU load to determine which needs adjustment. There are
+ * several things to consider here:
+ * - do we need to adjust up or down?
+ * - is CPU busy?
+ * - is GPU busy?
+ * - is CPU in turbo?
+ * - is GPU in turbo?
+ * - is CPU or GPU preferred? (CPU is default)
+ *
+ * So, given the above, we do the following:
+ * - up (TDP available)
+ * - CPU not busy, GPU not busy - nothing
+ * - CPU busy, GPU not busy - adjust CPU up
+ * - CPU not busy, GPU busy - adjust GPU up
+ * - CPU busy, GPU busy - adjust preferred unit up, taking headroom from
+ * non-preferred unit if necessary
+ * - down (at TDP limit)
+ * - adjust both CPU and GPU down if possible
+ *
+ cpu+ gpu+ cpu+gpu- cpu-gpu+ cpu-gpu-
+cpu < gpu < cpu+gpu+ cpu+ gpu+ nothing
+cpu < gpu >= cpu+gpu-(mcp<) cpu+gpu-(mcp<) gpu- gpu-
+cpu >= gpu < cpu-gpu+(mcp<) cpu- cpu-gpu+(mcp<) cpu-
+cpu >= gpu >= cpu-gpu- cpu-gpu- cpu-gpu- cpu-gpu-
+ *
+ */
+static int ips_adjust(void *data)
+{
+ struct ips_driver *ips = data;
+ unsigned long flags;
+
+ dev_dbg(&ips->dev->dev, "starting ips-adjust thread\n");
+
+ /*
+ * Adjust CPU and GPU clamps every 5s if needed. Doing it more
+ * often isn't recommended due to ME interaction.
+ */
+ do {
+ bool cpu_busy = ips_cpu_busy(ips);
+ bool gpu_busy = ips_gpu_busy(ips);
+
+ spin_lock_irqsave(&ips->turbo_status_lock, flags);
+ if (ips->poll_turbo_status)
+ update_turbo_limits(ips);
+ spin_unlock_irqrestore(&ips->turbo_status_lock, flags);
+
+ /* Update turbo status if necessary */
+ if (ips->cpu_turbo_enabled)
+ ips_enable_cpu_turbo(ips);
+ else
+ ips_disable_cpu_turbo(ips);
+
+ if (ips->gpu_turbo_enabled)
+ ips_enable_gpu_turbo(ips);
+ else
+ ips_disable_gpu_turbo(ips);
+
+ /* We're outside our comfort zone, crank them down */
+ if (mcp_exceeded(ips)) {
+ ips_cpu_lower(ips);
+ ips_gpu_lower(ips);
+ goto sleep;
+ }
+
+ if (!cpu_exceeded(ips, 0) && cpu_busy)
+ ips_cpu_raise(ips);
+ else
+ ips_cpu_lower(ips);
+
+ if (!mch_exceeded(ips) && gpu_busy)
+ ips_gpu_raise(ips);
+ else
+ ips_gpu_lower(ips);
+
+sleep:
+ schedule_timeout_interruptible(msecs_to_jiffies(IPS_ADJUST_PERIOD));
+ } while (!kthread_should_stop());
+
+ dev_dbg(&ips->dev->dev, "ips-adjust thread stopped\n");
+
+ return 0;
+}
+
+/*
+ * Helpers for reading out temp/power values and calculating their
+ * averages for the decision making and monitoring functions.
+ */
+
+static u16 calc_avg_temp(struct ips_driver *ips, u16 *array)
+{
+ u64 total = 0;
+ int i;
+ u16 avg;
+
+ for (i = 0; i < IPS_SAMPLE_COUNT; i++)
+ total += (u64)(array[i] * 100);
+
+ do_div(total, IPS_SAMPLE_COUNT);
+
+ avg = (u16)total;
+
+ return avg;
+}
+
+static u16 read_mgtv(struct ips_driver *ips)
+{
+ u16 ret;
+ u64 slope, offset;
+ u64 val;
+
+ val = thm_readq(THM_MGTV);
+ val = (val & TV_MASK) >> TV_SHIFT;
+
+ slope = offset = thm_readw(THM_MGTA);
+ slope = (slope & MGTA_SLOPE_MASK) >> MGTA_SLOPE_SHIFT;
+ offset = offset & MGTA_OFFSET_MASK;
+
+ ret = ((val * slope + 0x40) >> 7) + offset;
+
+ return 0; /* MCH temp reporting buggy */
+}
+
+static u16 read_ptv(struct ips_driver *ips)
+{
+ u16 val, slope, offset;
+
+ slope = (ips->pta_val & PTA_SLOPE_MASK) >> PTA_SLOPE_SHIFT;
+ offset = ips->pta_val & PTA_OFFSET_MASK;
+
+ val = thm_readw(THM_PTV) & PTV_MASK;
+
+ return val;
+}
+
+static u16 read_ctv(struct ips_driver *ips, int cpu)
+{
+ int reg = cpu ? THM_CTV2 : THM_CTV1;
+ u16 val;
+
+ val = thm_readw(reg);
+ if (!(val & CTV_TEMP_ERROR))
+ val = (val) >> 6; /* discard fractional component */
+ else
+ val = 0;
+
+ return val;
+}
+
+static u32 get_cpu_power(struct ips_driver *ips, u32 *last, int period)
+{
+ u32 val;
+ u32 ret;
+
+ /*
+ * CEC is in joules/65535. Take difference over time to
+ * get watts.
+ */
+ val = thm_readl(THM_CEC);
+
+ /* period is in ms and we want mW */
+ ret = (((val - *last) * 1000) / period);
+ ret = (ret * 1000) / 65535;
+ *last = val;
+
+ return 0;
+}
+
+static const u16 temp_decay_factor = 2;
+static u16 update_average_temp(u16 avg, u16 val)
+{
+ u16 ret;
+
+ /* Multiply by 100 for extra precision */
+ ret = (val * 100 / temp_decay_factor) +
+ (((temp_decay_factor - 1) * avg) / temp_decay_factor);
+ return ret;
+}
+
+static const u16 power_decay_factor = 2;
+static u16 update_average_power(u32 avg, u32 val)
+{
+ u32 ret;
+
+ ret = (val / power_decay_factor) +
+ (((power_decay_factor - 1) * avg) / power_decay_factor);
+
+ return ret;
+}
+
+static u32 calc_avg_power(struct ips_driver *ips, u32 *array)
+{
+ u64 total = 0;
+ u32 avg;
+ int i;
+
+ for (i = 0; i < IPS_SAMPLE_COUNT; i++)
+ total += array[i];
+
+ do_div(total, IPS_SAMPLE_COUNT);
+ avg = (u32)total;
+
+ return avg;
+}
+
+static void monitor_timeout(unsigned long arg)
+{
+ wake_up_process((struct task_struct *)arg);
+}
+
+/**
+ * ips_monitor - temp/power monitoring thread
+ * @data: ips driver structure
+ *
+ * This is the main function for the IPS driver. It monitors power and
+ * tempurature in the MCP and adjusts CPU and GPU power clams accordingly.
+ *
+ * We keep a 5s moving average of power consumption and tempurature. Using
+ * that data, along with CPU vs GPU preference, we adjust the power clamps
+ * up or down.
+ */
+static int ips_monitor(void *data)
+{
+ struct ips_driver *ips = data;
+ struct timer_list timer;
+ unsigned long seqno_timestamp, expire, last_msecs, last_sample_period;
+ int i;
+ u32 *cpu_samples, *mchp_samples, old_cpu_power;
+ u16 *mcp_samples, *ctv1_samples, *ctv2_samples, *mch_samples;
+ u8 cur_seqno, last_seqno;
+
+ mcp_samples = kzalloc(sizeof(u16) * IPS_SAMPLE_COUNT, GFP_KERNEL);
+ ctv1_samples = kzalloc(sizeof(u16) * IPS_SAMPLE_COUNT, GFP_KERNEL);
+ ctv2_samples = kzalloc(sizeof(u16) * IPS_SAMPLE_COUNT, GFP_KERNEL);
+ mch_samples = kzalloc(sizeof(u16) * IPS_SAMPLE_COUNT, GFP_KERNEL);
+ cpu_samples = kzalloc(sizeof(u32) * IPS_SAMPLE_COUNT, GFP_KERNEL);
+ mchp_samples = kzalloc(sizeof(u32) * IPS_SAMPLE_COUNT, GFP_KERNEL);
+ if (!mcp_samples || !ctv1_samples || !ctv2_samples || !mch_samples ||
+ !cpu_samples || !mchp_samples) {
+ dev_err(&ips->dev->dev,
+ "failed to allocate sample array, ips disabled\n");
+ kfree(mcp_samples);
+ kfree(ctv1_samples);
+ kfree(ctv2_samples);
+ kfree(mch_samples);
+ kfree(cpu_samples);
+ kfree(mchp_samples);
+ return -ENOMEM;
+ }
+
+ last_seqno = (thm_readl(THM_ITV) & ITV_ME_SEQNO_MASK) >>
+ ITV_ME_SEQNO_SHIFT;
+ seqno_timestamp = get_jiffies_64();
+
+ old_cpu_power = thm_readl(THM_CEC);
+ schedule_timeout_interruptible(msecs_to_jiffies(IPS_SAMPLE_PERIOD));
+
+ /* Collect an initial average */
+ for (i = 0; i < IPS_SAMPLE_COUNT; i++) {
+ u32 mchp, cpu_power;
+ u16 val;
+
+ mcp_samples[i] = read_ptv(ips);
+
+ val = read_ctv(ips, 0);
+ ctv1_samples[i] = val;
+
+ val = read_ctv(ips, 1);
+ ctv2_samples[i] = val;
+
+ val = read_mgtv(ips);
+ mch_samples[i] = val;
+
+ cpu_power = get_cpu_power(ips, &old_cpu_power,
+ IPS_SAMPLE_PERIOD);
+ cpu_samples[i] = cpu_power;
+
+ if (ips->read_mch_val) {
+ mchp = ips->read_mch_val();
+ mchp_samples[i] = mchp;
+ }
+
+ schedule_timeout_interruptible(msecs_to_jiffies(IPS_SAMPLE_PERIOD));
+ if (kthread_should_stop())
+ break;
+ }
+
+ ips->mcp_avg_temp = calc_avg_temp(ips, mcp_samples);
+ ips->ctv1_avg_temp = calc_avg_temp(ips, ctv1_samples);
+ ips->ctv2_avg_temp = calc_avg_temp(ips, ctv2_samples);
+ ips->mch_avg_temp = calc_avg_temp(ips, mch_samples);
+ ips->cpu_avg_power = calc_avg_power(ips, cpu_samples);
+ ips->mch_avg_power = calc_avg_power(ips, mchp_samples);
+ kfree(mcp_samples);
+ kfree(ctv1_samples);
+ kfree(ctv2_samples);
+ kfree(mch_samples);
+ kfree(cpu_samples);
+ kfree(mchp_samples);
+
+ /* Start the adjustment thread now that we have data */
+ wake_up_process(ips->adjust);
+
+ /*
+ * Ok, now we have an initial avg. From here on out, we track the
+ * running avg using a decaying average calculation. This allows
+ * us to reduce the sample frequency if the CPU and GPU are idle.
+ */
+ old_cpu_power = thm_readl(THM_CEC);
+ schedule_timeout_interruptible(msecs_to_jiffies(IPS_SAMPLE_PERIOD));
+ last_sample_period = IPS_SAMPLE_PERIOD;
+
+ setup_deferrable_timer_on_stack(&timer, monitor_timeout,
+ (unsigned long)current);
+ do {
+ u32 cpu_val, mch_val;
+ u16 val;
+
+ /* MCP itself */
+ val = read_ptv(ips);
+ ips->mcp_avg_temp = update_average_temp(ips->mcp_avg_temp, val);
+
+ /* Processor 0 */
+ val = read_ctv(ips, 0);
+ ips->ctv1_avg_temp =
+ update_average_temp(ips->ctv1_avg_temp, val);
+ /* Power */
+ cpu_val = get_cpu_power(ips, &old_cpu_power,
+ last_sample_period);
+ ips->cpu_avg_power =
+ update_average_power(ips->cpu_avg_power, cpu_val);
+
+ if (ips->second_cpu) {
+ /* Processor 1 */
+ val = read_ctv(ips, 1);
+ ips->ctv2_avg_temp =
+ update_average_temp(ips->ctv2_avg_temp, val);
+ }
+
+ /* MCH */
+ val = read_mgtv(ips);
+ ips->mch_avg_temp = update_average_temp(ips->mch_avg_temp, val);
+ /* Power */
+ if (ips->read_mch_val) {
+ mch_val = ips->read_mch_val();
+ ips->mch_avg_power =
+ update_average_power(ips->mch_avg_power,
+ mch_val);
+ }
+
+ /*
+ * Make sure ME is updating thermal regs.
+ * Note:
+ * If it's been more than a second since the last update,
+ * the ME is probably hung.
+ */
+ cur_seqno = (thm_readl(THM_ITV) & ITV_ME_SEQNO_MASK) >>
+ ITV_ME_SEQNO_SHIFT;
+ if (cur_seqno == last_seqno &&
+ time_after(jiffies, seqno_timestamp + HZ)) {
+ dev_warn(&ips->dev->dev, "ME failed to update for more than 1s, likely hung\n");
+ } else {
+ seqno_timestamp = get_jiffies_64();
+ last_seqno = cur_seqno;
+ }
+
+ last_msecs = jiffies_to_msecs(jiffies);
+ expire = jiffies + msecs_to_jiffies(IPS_SAMPLE_PERIOD);
+
+ __set_current_state(TASK_INTERRUPTIBLE);
+ mod_timer(&timer, expire);
+ schedule();
+
+ /* Calculate actual sample period for power averaging */
+ last_sample_period = jiffies_to_msecs(jiffies) - last_msecs;
+ if (!last_sample_period)
+ last_sample_period = 1;
+ } while (!kthread_should_stop());
+
+ del_timer_sync(&timer);
+ destroy_timer_on_stack(&timer);
+
+ dev_dbg(&ips->dev->dev, "ips-monitor thread stopped\n");
+
+ return 0;
+}
+
+#if 0
+#define THM_DUMPW(reg) \
+ { \
+ u16 val = thm_readw(reg); \
+ dev_dbg(&ips->dev->dev, #reg ": 0x%04x\n", val); \
+ }
+#define THM_DUMPL(reg) \
+ { \
+ u32 val = thm_readl(reg); \
+ dev_dbg(&ips->dev->dev, #reg ": 0x%08x\n", val); \
+ }
+#define THM_DUMPQ(reg) \
+ { \
+ u64 val = thm_readq(reg); \
+ dev_dbg(&ips->dev->dev, #reg ": 0x%016x\n", val); \
+ }
+
+static void dump_thermal_info(struct ips_driver *ips)
+{
+ u16 ptl;
+
+ ptl = thm_readw(THM_PTL);
+ dev_dbg(&ips->dev->dev, "Processor temp limit: %d\n", ptl);
+
+ THM_DUMPW(THM_CTA);
+ THM_DUMPW(THM_TRC);
+ THM_DUMPW(THM_CTV1);
+ THM_DUMPL(THM_STS);
+ THM_DUMPW(THM_PTV);
+ THM_DUMPQ(THM_MGTV);
+}
+#endif
+
+/**
+ * ips_irq_handler - handle temperature triggers and other IPS events
+ * @irq: irq number
+ * @arg: unused
+ *
+ * Handle temperature limit trigger events, generally by lowering the clamps.
+ * If we're at a critical limit, we clamp back to the lowest possible value
+ * to prevent emergency shutdown.
+ */
+static irqreturn_t ips_irq_handler(int irq, void *arg)
+{
+ struct ips_driver *ips = arg;
+ u8 tses = thm_readb(THM_TSES);
+ u8 tes = thm_readb(THM_TES);
+
+ if (!tses && !tes)
+ return IRQ_NONE;
+
+ dev_info(&ips->dev->dev, "TSES: 0x%02x\n", tses);
+ dev_info(&ips->dev->dev, "TES: 0x%02x\n", tes);
+
+ /* STS update from EC? */
+ if (tes & 1) {
+ u32 sts, tc1;
+
+ sts = thm_readl(THM_STS);
+ tc1 = thm_readl(THM_TC1);
+
+ if (sts & STS_NVV) {
+ spin_lock(&ips->turbo_status_lock);
+ ips->core_power_limit = (sts & STS_PCPL_MASK) >>
+ STS_PCPL_SHIFT;
+ ips->mch_power_limit = (sts & STS_GPL_MASK) >>
+ STS_GPL_SHIFT;
+ /* ignore EC CPU vs GPU pref */
+ ips->cpu_turbo_enabled = !(sts & STS_PCTD_DIS);
+ /*
+ * Disable turbo for now, until we can figure
+ * out why the power figures are wrong
+ */
+ ips->cpu_turbo_enabled = false;
+ if (ips->gpu_busy)
+ ips->gpu_turbo_enabled = !(sts & STS_GTD_DIS);
+ ips->mcp_temp_limit = (sts & STS_PTL_MASK) >>
+ STS_PTL_SHIFT;
+ ips->mcp_power_limit = (tc1 & STS_PPL_MASK) >>
+ STS_PPL_SHIFT;
+ verify_limits(ips);
+ spin_unlock(&ips->turbo_status_lock);
+
+ thm_writeb(THM_SEC, SEC_ACK);
+ }
+ thm_writeb(THM_TES, tes);
+ }
+
+ /* Thermal trip */
+ if (tses) {
+ dev_warn(&ips->dev->dev,
+ "thermal trip occurred, tses: 0x%04x\n", tses);
+ thm_writeb(THM_TSES, tses);
+ }
+
+ return IRQ_HANDLED;
+}
+
+#ifndef CONFIG_DEBUG_FS
+static void ips_debugfs_init(struct ips_driver *ips) { return; }
+static void ips_debugfs_cleanup(struct ips_driver *ips) { return; }
+#else
+
+/* Expose current state and limits in debugfs if possible */
+
+struct ips_debugfs_node {
+ struct ips_driver *ips;
+ char *name;
+ int (*show)(struct seq_file *m, void *data);
+};
+
+static int show_cpu_temp(struct seq_file *m, void *data)
+{
+ struct ips_driver *ips = m->private;
+
+ seq_printf(m, "%d.%02d\n", ips->ctv1_avg_temp / 100,
+ ips->ctv1_avg_temp % 100);
+
+ return 0;
+}
+
+static int show_cpu_power(struct seq_file *m, void *data)
+{
+ struct ips_driver *ips = m->private;
+
+ seq_printf(m, "%dmW\n", ips->cpu_avg_power);
+
+ return 0;
+}
+
+static int show_cpu_clamp(struct seq_file *m, void *data)
+{
+ u64 turbo_override;
+ int tdp, tdc;
+
+ rdmsrl(TURBO_POWER_CURRENT_LIMIT, turbo_override);
+
+ tdp = (int)(turbo_override & TURBO_TDP_MASK);
+ tdc = (int)((turbo_override & TURBO_TDC_MASK) >> TURBO_TDC_SHIFT);
+
+ /* Convert to .1W/A units */
+ tdp = tdp * 10 / 8;
+ tdc = tdc * 10 / 8;
+
+ /* Watts Amperes */
+ seq_printf(m, "%d.%dW %d.%dA\n", tdp / 10, tdp % 10,
+ tdc / 10, tdc % 10);
+
+ return 0;
+}
+
+static int show_mch_temp(struct seq_file *m, void *data)
+{
+ struct ips_driver *ips = m->private;
+
+ seq_printf(m, "%d.%02d\n", ips->mch_avg_temp / 100,
+ ips->mch_avg_temp % 100);
+
+ return 0;
+}
+
+static int show_mch_power(struct seq_file *m, void *data)
+{
+ struct ips_driver *ips = m->private;
+
+ seq_printf(m, "%dmW\n", ips->mch_avg_power);
+
+ return 0;
+}
+
+static struct ips_debugfs_node ips_debug_files[] = {
+ { NULL, "cpu_temp", show_cpu_temp },
+ { NULL, "cpu_power", show_cpu_power },
+ { NULL, "cpu_clamp", show_cpu_clamp },
+ { NULL, "mch_temp", show_mch_temp },
+ { NULL, "mch_power", show_mch_power },
+};
+
+static int ips_debugfs_open(struct inode *inode, struct file *file)
+{
+ struct ips_debugfs_node *node = inode->i_private;
+
+ return single_open(file, node->show, node->ips);
+}
+
+static const struct file_operations ips_debugfs_ops = {
+ .owner = THIS_MODULE,
+ .open = ips_debugfs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void ips_debugfs_cleanup(struct ips_driver *ips)
+{
+ if (ips->debug_root)
+ debugfs_remove_recursive(ips->debug_root);
+ return;
+}
+
+static void ips_debugfs_init(struct ips_driver *ips)
+{
+ int i;
+
+ ips->debug_root = debugfs_create_dir("ips", NULL);
+ if (!ips->debug_root) {
+ dev_err(&ips->dev->dev,
+ "failed to create debugfs entries: %ld\n",
+ PTR_ERR(ips->debug_root));
+ return;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(ips_debug_files); i++) {
+ struct dentry *ent;
+ struct ips_debugfs_node *node = &ips_debug_files[i];
+
+ node->ips = ips;
+ ent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
+ ips->debug_root, node,
+ &ips_debugfs_ops);
+ if (!ent) {
+ dev_err(&ips->dev->dev,
+ "failed to create debug file: %ld\n",
+ PTR_ERR(ent));
+ goto err_cleanup;
+ }
+ }
+
+ return;
+
+err_cleanup:
+ ips_debugfs_cleanup(ips);
+ return;
+}
+#endif /* CONFIG_DEBUG_FS */
+
+/**
+ * ips_detect_cpu - detect whether CPU supports IPS
+ *
+ * Walk our list and see if we're on a supported CPU. If we find one,
+ * return the limits for it.
+ */
+static struct ips_mcp_limits *ips_detect_cpu(struct ips_driver *ips)
+{
+ u64 turbo_power, misc_en;
+ struct ips_mcp_limits *limits = NULL;
+ u16 tdp;
+
+ if (!(boot_cpu_data.x86 == 6 && boot_cpu_data.x86_model == 37)) {
+ dev_info(&ips->dev->dev, "Non-IPS CPU detected.\n");
+ goto out;
+ }
+
+ rdmsrl(IA32_MISC_ENABLE, misc_en);
+ /*
+ * If the turbo enable bit isn't set, we shouldn't try to enable/disable
+ * turbo manually or we'll get an illegal MSR access, even though
+ * turbo will still be available.
+ */
+ if (misc_en & IA32_MISC_TURBO_EN)
+ ips->turbo_toggle_allowed = true;
+ else
+ ips->turbo_toggle_allowed = false;
+
+ if (strstr(boot_cpu_data.x86_model_id, "CPU M"))
+ limits = &ips_sv_limits;
+ else if (strstr(boot_cpu_data.x86_model_id, "CPU L"))
+ limits = &ips_lv_limits;
+ else if (strstr(boot_cpu_data.x86_model_id, "CPU U"))
+ limits = &ips_ulv_limits;
+ else {
+ dev_info(&ips->dev->dev, "No CPUID match found.\n");
+ goto out;
+ }
+
+ rdmsrl(TURBO_POWER_CURRENT_LIMIT, turbo_power);
+ tdp = turbo_power & TURBO_TDP_MASK;
+
+ /* Sanity check TDP against CPU */
+ if (limits->core_power_limit != (tdp / 8) * 1000) {
+ dev_info(&ips->dev->dev, "CPU TDP doesn't match expected value (found %d, expected %d)\n",
+ tdp / 8, limits->core_power_limit / 1000);
+ limits->core_power_limit = (tdp / 8) * 1000;
+ }
+
+out:
+ return limits;
+}
+
+/**
+ * ips_get_i915_syms - try to get GPU control methods from i915 driver
+ * @ips: IPS driver
+ *
+ * The i915 driver exports several interfaces to allow the IPS driver to
+ * monitor and control graphics turbo mode. If we can find them, we can
+ * enable graphics turbo, otherwise we must disable it to avoid exceeding
+ * thermal and power limits in the MCP.
+ */
+static bool ips_get_i915_syms(struct ips_driver *ips)
+{
+ ips->read_mch_val = symbol_get(i915_read_mch_val);
+ if (!ips->read_mch_val)
+ goto out_err;
+ ips->gpu_raise = symbol_get(i915_gpu_raise);
+ if (!ips->gpu_raise)
+ goto out_put_mch;
+ ips->gpu_lower = symbol_get(i915_gpu_lower);
+ if (!ips->gpu_lower)
+ goto out_put_raise;
+ ips->gpu_busy = symbol_get(i915_gpu_busy);
+ if (!ips->gpu_busy)
+ goto out_put_lower;
+ ips->gpu_turbo_disable = symbol_get(i915_gpu_turbo_disable);
+ if (!ips->gpu_turbo_disable)
+ goto out_put_busy;
+
+ return true;
+
+out_put_busy:
+ symbol_put(i915_gpu_busy);
+out_put_lower:
+ symbol_put(i915_gpu_lower);
+out_put_raise:
+ symbol_put(i915_gpu_raise);
+out_put_mch:
+ symbol_put(i915_read_mch_val);
+out_err:
+ return false;
+}
+
+static bool
+ips_gpu_turbo_enabled(struct ips_driver *ips)
+{
+ if (!ips->gpu_busy && late_i915_load) {
+ if (ips_get_i915_syms(ips)) {
+ dev_info(&ips->dev->dev,
+ "i915 driver attached, reenabling gpu turbo\n");
+ ips->gpu_turbo_enabled = !(thm_readl(THM_HTS) & HTS_GTD_DIS);
+ }
+ }
+
+ return ips->gpu_turbo_enabled;
+}
+
+void
+ips_link_to_i915_driver(void)
+{
+ /* We can't cleanly get at the various ips_driver structs from
+ * this caller (the i915 driver), so just set a flag saying
+ * that it's time to try getting the symbols again.
+ */
+ late_i915_load = true;
+}
+EXPORT_SYMBOL_GPL(ips_link_to_i915_driver);
+
+static const struct pci_device_id ips_id_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_THERMAL_SENSOR), },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, ips_id_table);
+
+static int ips_blacklist_callback(const struct dmi_system_id *id)
+{
+ pr_info("Blacklisted intel_ips for %s\n", id->ident);
+ return 1;
+}
+
+static const struct dmi_system_id ips_blacklist[] = {
+ {
+ .callback = ips_blacklist_callback,
+ .ident = "HP ProBook",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HP ProBook"),
+ },
+ },
+ { } /* terminating entry */
+};
+
+static int ips_probe(struct pci_dev *dev, const struct pci_device_id *id)
+{
+ u64 platform_info;
+ struct ips_driver *ips;
+ u32 hts;
+ int ret = 0;
+ u16 htshi, trc, trc_required_mask;
+ u8 tse;
+
+ if (dmi_check_system(ips_blacklist))
+ return -ENODEV;
+
+ ips = kzalloc(sizeof(struct ips_driver), GFP_KERNEL);
+ if (!ips)
+ return -ENOMEM;
+
+ pci_set_drvdata(dev, ips);
+ ips->dev = dev;
+
+ ips->limits = ips_detect_cpu(ips);
+ if (!ips->limits) {
+ dev_info(&dev->dev, "IPS not supported on this CPU\n");
+ ret = -ENXIO;
+ goto error_free;
+ }
+
+ spin_lock_init(&ips->turbo_status_lock);
+
+ ret = pci_enable_device(dev);
+ if (ret) {
+ dev_err(&dev->dev, "can't enable PCI device, aborting\n");
+ goto error_free;
+ }
+
+ if (!pci_resource_start(dev, 0)) {
+ dev_err(&dev->dev, "TBAR not assigned, aborting\n");
+ ret = -ENXIO;
+ goto error_free;
+ }
+
+ ret = pci_request_regions(dev, "ips thermal sensor");
+ if (ret) {
+ dev_err(&dev->dev, "thermal resource busy, aborting\n");
+ goto error_free;
+ }
+
+
+ ips->regmap = ioremap(pci_resource_start(dev, 0),
+ pci_resource_len(dev, 0));
+ if (!ips->regmap) {
+ dev_err(&dev->dev, "failed to map thermal regs, aborting\n");
+ ret = -EBUSY;
+ goto error_release;
+ }
+
+ tse = thm_readb(THM_TSE);
+ if (tse != TSE_EN) {
+ dev_err(&dev->dev, "thermal device not enabled (0x%02x), aborting\n", tse);
+ ret = -ENXIO;
+ goto error_unmap;
+ }
+
+ trc = thm_readw(THM_TRC);
+ trc_required_mask = TRC_CORE1_EN | TRC_CORE_PWR | TRC_MCH_EN;
+ if ((trc & trc_required_mask) != trc_required_mask) {
+ dev_err(&dev->dev, "thermal reporting for required devices not enabled, aborting\n");
+ ret = -ENXIO;
+ goto error_unmap;
+ }
+
+ if (trc & TRC_CORE2_EN)
+ ips->second_cpu = true;
+
+ update_turbo_limits(ips);
+ dev_dbg(&dev->dev, "max cpu power clamp: %dW\n",
+ ips->mcp_power_limit / 10);
+ dev_dbg(&dev->dev, "max core power clamp: %dW\n",
+ ips->core_power_limit / 10);
+ /* BIOS may update limits at runtime */
+ if (thm_readl(THM_PSC) & PSP_PBRT)
+ ips->poll_turbo_status = true;
+
+ if (!ips_get_i915_syms(ips)) {
+ dev_info(&dev->dev, "failed to get i915 symbols, graphics turbo disabled until i915 loads\n");
+ ips->gpu_turbo_enabled = false;
+ } else {
+ dev_dbg(&dev->dev, "graphics turbo enabled\n");
+ ips->gpu_turbo_enabled = true;
+ }
+
+ /*
+ * Check PLATFORM_INFO MSR to make sure this chip is
+ * turbo capable.
+ */
+ rdmsrl(PLATFORM_INFO, platform_info);
+ if (!(platform_info & PLATFORM_TDP)) {
+ dev_err(&dev->dev, "platform indicates TDP override unavailable, aborting\n");
+ ret = -ENODEV;
+ goto error_unmap;
+ }
+
+ /*
+ * IRQ handler for ME interaction
+ * Note: don't use MSI here as the PCH has bugs.
+ */
+ pci_disable_msi(dev);
+ ret = request_irq(dev->irq, ips_irq_handler, IRQF_SHARED, "ips",
+ ips);
+ if (ret) {
+ dev_err(&dev->dev, "request irq failed, aborting\n");
+ goto error_unmap;
+ }
+
+ /* Enable aux, hot & critical interrupts */
+ thm_writeb(THM_TSPIEN, TSPIEN_AUX2_LOHI | TSPIEN_CRIT_LOHI |
+ TSPIEN_HOT_LOHI | TSPIEN_AUX_LOHI);
+ thm_writeb(THM_TEN, TEN_UPDATE_EN);
+
+ /* Collect adjustment values */
+ ips->cta_val = thm_readw(THM_CTA);
+ ips->pta_val = thm_readw(THM_PTA);
+ ips->mgta_val = thm_readw(THM_MGTA);
+
+ /* Save turbo limits & ratios */
+ rdmsrl(TURBO_POWER_CURRENT_LIMIT, ips->orig_turbo_limit);
+
+ ips_disable_cpu_turbo(ips);
+ ips->cpu_turbo_enabled = false;
+
+ /* Create thermal adjust thread */
+ ips->adjust = kthread_create(ips_adjust, ips, "ips-adjust");
+ if (IS_ERR(ips->adjust)) {
+ dev_err(&dev->dev,
+ "failed to create thermal adjust thread, aborting\n");
+ ret = -ENOMEM;
+ goto error_free_irq;
+
+ }
+
+ /*
+ * Set up the work queue and monitor thread. The monitor thread
+ * will wake up ips_adjust thread.
+ */
+ ips->monitor = kthread_run(ips_monitor, ips, "ips-monitor");
+ if (IS_ERR(ips->monitor)) {
+ dev_err(&dev->dev,
+ "failed to create thermal monitor thread, aborting\n");
+ ret = -ENOMEM;
+ goto error_thread_cleanup;
+ }
+
+ hts = (ips->core_power_limit << HTS_PCPL_SHIFT) |
+ (ips->mcp_temp_limit << HTS_PTL_SHIFT) | HTS_NVV;
+ htshi = HTS2_PRST_RUNNING << HTS2_PRST_SHIFT;
+
+ thm_writew(THM_HTSHI, htshi);
+ thm_writel(THM_HTS, hts);
+
+ ips_debugfs_init(ips);
+
+ dev_info(&dev->dev, "IPS driver initialized, MCP temp limit %d\n",
+ ips->mcp_temp_limit);
+ return ret;
+
+error_thread_cleanup:
+ kthread_stop(ips->adjust);
+error_free_irq:
+ free_irq(ips->dev->irq, ips);
+error_unmap:
+ iounmap(ips->regmap);
+error_release:
+ pci_release_regions(dev);
+error_free:
+ kfree(ips);
+ return ret;
+}
+
+static void ips_remove(struct pci_dev *dev)
+{
+ struct ips_driver *ips = pci_get_drvdata(dev);
+ u64 turbo_override;
+
+ if (!ips)
+ return;
+
+ ips_debugfs_cleanup(ips);
+
+ /* Release i915 driver */
+ if (ips->read_mch_val)
+ symbol_put(i915_read_mch_val);
+ if (ips->gpu_raise)
+ symbol_put(i915_gpu_raise);
+ if (ips->gpu_lower)
+ symbol_put(i915_gpu_lower);
+ if (ips->gpu_busy)
+ symbol_put(i915_gpu_busy);
+ if (ips->gpu_turbo_disable)
+ symbol_put(i915_gpu_turbo_disable);
+
+ rdmsrl(TURBO_POWER_CURRENT_LIMIT, turbo_override);
+ turbo_override &= ~(TURBO_TDC_OVR_EN | TURBO_TDP_OVR_EN);
+ wrmsrl(TURBO_POWER_CURRENT_LIMIT, turbo_override);
+ wrmsrl(TURBO_POWER_CURRENT_LIMIT, ips->orig_turbo_limit);
+
+ free_irq(ips->dev->irq, ips);
+ if (ips->adjust)
+ kthread_stop(ips->adjust);
+ if (ips->monitor)
+ kthread_stop(ips->monitor);
+ iounmap(ips->regmap);
+ pci_release_regions(dev);
+ kfree(ips);
+ dev_dbg(&dev->dev, "IPS driver removed\n");
+}
+
+static void ips_shutdown(struct pci_dev *dev)
+{
+}
+
+static struct pci_driver ips_pci_driver = {
+ .name = "intel ips",
+ .id_table = ips_id_table,
+ .probe = ips_probe,
+ .remove = ips_remove,
+ .shutdown = ips_shutdown,
+};
+
+module_pci_driver(ips_pci_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jesse Barnes <jbarnes@virtuousgeek.org>");
+MODULE_DESCRIPTION("Intelligent Power Sharing Driver");
diff --git a/drivers/platform/x86/intel_ips.h b/drivers/platform/x86/intel_ips.h
new file mode 100644
index 000000000..73299beff
--- /dev/null
+++ b/drivers/platform/x86/intel_ips.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2010 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ */
+
+void ips_link_to_i915_driver(void);
diff --git a/drivers/platform/x86/intel_menlow.c b/drivers/platform/x86/intel_menlow.c
new file mode 100644
index 000000000..e8b46d2c4
--- /dev/null
+++ b/drivers/platform/x86/intel_menlow.c
@@ -0,0 +1,537 @@
+/*
+ * intel_menlow.c - Intel menlow Driver for thermal management extension
+ *
+ * Copyright (C) 2008 Intel Corp
+ * Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
+ * Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This driver creates the sys I/F for programming the sensors.
+ * It also implements the driver for intel menlow memory controller (hardware
+ * id is INT0002) which makes use of the platform specific ACPI methods
+ * to get/set bandwidth.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/pm.h>
+#include <linux/thermal.h>
+#include <linux/acpi.h>
+
+MODULE_AUTHOR("Thomas Sujith");
+MODULE_AUTHOR("Zhang Rui");
+MODULE_DESCRIPTION("Intel Menlow platform specific driver");
+MODULE_LICENSE("GPL");
+
+/*
+ * Memory controller device control
+ */
+
+#define MEMORY_GET_BANDWIDTH "GTHS"
+#define MEMORY_SET_BANDWIDTH "STHS"
+#define MEMORY_ARG_CUR_BANDWIDTH 1
+#define MEMORY_ARG_MAX_BANDWIDTH 0
+
+static void intel_menlow_unregister_sensor(void);
+
+/*
+ * GTHS returning 'n' would mean that [0,n-1] states are supported
+ * In that case max_cstate would be n-1
+ * GTHS returning '0' would mean that no bandwidth control states are supported
+ */
+static int memory_get_max_bandwidth(struct thermal_cooling_device *cdev,
+ unsigned long *max_state)
+{
+ struct acpi_device *device = cdev->devdata;
+ acpi_handle handle = device->handle;
+ unsigned long long value;
+ struct acpi_object_list arg_list;
+ union acpi_object arg;
+ acpi_status status = AE_OK;
+
+ arg_list.count = 1;
+ arg_list.pointer = &arg;
+ arg.type = ACPI_TYPE_INTEGER;
+ arg.integer.value = MEMORY_ARG_MAX_BANDWIDTH;
+ status = acpi_evaluate_integer(handle, MEMORY_GET_BANDWIDTH,
+ &arg_list, &value);
+ if (ACPI_FAILURE(status))
+ return -EFAULT;
+
+ if (!value)
+ return -EINVAL;
+
+ *max_state = value - 1;
+ return 0;
+}
+
+static int memory_get_cur_bandwidth(struct thermal_cooling_device *cdev,
+ unsigned long *value)
+{
+ struct acpi_device *device = cdev->devdata;
+ acpi_handle handle = device->handle;
+ unsigned long long result;
+ struct acpi_object_list arg_list;
+ union acpi_object arg;
+ acpi_status status = AE_OK;
+
+ arg_list.count = 1;
+ arg_list.pointer = &arg;
+ arg.type = ACPI_TYPE_INTEGER;
+ arg.integer.value = MEMORY_ARG_CUR_BANDWIDTH;
+ status = acpi_evaluate_integer(handle, MEMORY_GET_BANDWIDTH,
+ &arg_list, &result);
+ if (ACPI_FAILURE(status))
+ return -EFAULT;
+
+ *value = result;
+ return 0;
+}
+
+static int memory_set_cur_bandwidth(struct thermal_cooling_device *cdev,
+ unsigned long state)
+{
+ struct acpi_device *device = cdev->devdata;
+ acpi_handle handle = device->handle;
+ struct acpi_object_list arg_list;
+ union acpi_object arg;
+ acpi_status status;
+ unsigned long long temp;
+ unsigned long max_state;
+
+ if (memory_get_max_bandwidth(cdev, &max_state))
+ return -EFAULT;
+
+ if (state > max_state)
+ return -EINVAL;
+
+ arg_list.count = 1;
+ arg_list.pointer = &arg;
+ arg.type = ACPI_TYPE_INTEGER;
+ arg.integer.value = state;
+
+ status =
+ acpi_evaluate_integer(handle, MEMORY_SET_BANDWIDTH, &arg_list,
+ &temp);
+
+ pr_info("Bandwidth value was %ld: status is %d\n", state, status);
+ if (ACPI_FAILURE(status))
+ return -EFAULT;
+
+ return 0;
+}
+
+static struct thermal_cooling_device_ops memory_cooling_ops = {
+ .get_max_state = memory_get_max_bandwidth,
+ .get_cur_state = memory_get_cur_bandwidth,
+ .set_cur_state = memory_set_cur_bandwidth,
+};
+
+/*
+ * Memory Device Management
+ */
+static int intel_menlow_memory_add(struct acpi_device *device)
+{
+ int result = -ENODEV;
+ struct thermal_cooling_device *cdev;
+
+ if (!device)
+ return -EINVAL;
+
+ if (!acpi_has_method(device->handle, MEMORY_GET_BANDWIDTH))
+ goto end;
+
+ if (!acpi_has_method(device->handle, MEMORY_SET_BANDWIDTH))
+ goto end;
+
+ cdev = thermal_cooling_device_register("Memory controller", device,
+ &memory_cooling_ops);
+ if (IS_ERR(cdev)) {
+ result = PTR_ERR(cdev);
+ goto end;
+ }
+
+ device->driver_data = cdev;
+ result = sysfs_create_link(&device->dev.kobj,
+ &cdev->device.kobj, "thermal_cooling");
+ if (result)
+ goto unregister;
+
+ result = sysfs_create_link(&cdev->device.kobj,
+ &device->dev.kobj, "device");
+ if (result) {
+ sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
+ goto unregister;
+ }
+
+ end:
+ return result;
+
+ unregister:
+ thermal_cooling_device_unregister(cdev);
+ return result;
+
+}
+
+static int intel_menlow_memory_remove(struct acpi_device *device)
+{
+ struct thermal_cooling_device *cdev = acpi_driver_data(device);
+
+ if (!device || !cdev)
+ return -EINVAL;
+
+ sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
+ sysfs_remove_link(&cdev->device.kobj, "device");
+ thermal_cooling_device_unregister(cdev);
+
+ return 0;
+}
+
+static const struct acpi_device_id intel_menlow_memory_ids[] = {
+ {"INT0002", 0},
+ {"", 0},
+};
+
+static struct acpi_driver intel_menlow_memory_driver = {
+ .name = "intel_menlow_thermal_control",
+ .ids = intel_menlow_memory_ids,
+ .ops = {
+ .add = intel_menlow_memory_add,
+ .remove = intel_menlow_memory_remove,
+ },
+};
+
+/*
+ * Sensor control on menlow platform
+ */
+
+#define THERMAL_AUX0 0
+#define THERMAL_AUX1 1
+#define GET_AUX0 "GAX0"
+#define GET_AUX1 "GAX1"
+#define SET_AUX0 "SAX0"
+#define SET_AUX1 "SAX1"
+
+struct intel_menlow_attribute {
+ struct device_attribute attr;
+ struct device *device;
+ acpi_handle handle;
+ struct list_head node;
+};
+
+static LIST_HEAD(intel_menlow_attr_list);
+static DEFINE_MUTEX(intel_menlow_attr_lock);
+
+/*
+ * sensor_get_auxtrip - get the current auxtrip value from sensor
+ * @name: Thermalzone name
+ * @auxtype : AUX0/AUX1
+ * @buf: syfs buffer
+ */
+static int sensor_get_auxtrip(acpi_handle handle, int index,
+ unsigned long long *value)
+{
+ acpi_status status;
+
+ if ((index != 0 && index != 1) || !value)
+ return -EINVAL;
+
+ status = acpi_evaluate_integer(handle, index ? GET_AUX1 : GET_AUX0,
+ NULL, value);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ return 0;
+}
+
+/*
+ * sensor_set_auxtrip - set the new auxtrip value to sensor
+ * @name: Thermalzone name
+ * @auxtype : AUX0/AUX1
+ * @buf: syfs buffer
+ */
+static int sensor_set_auxtrip(acpi_handle handle, int index, int value)
+{
+ acpi_status status;
+ union acpi_object arg = {
+ ACPI_TYPE_INTEGER
+ };
+ struct acpi_object_list args = {
+ 1, &arg
+ };
+ unsigned long long temp;
+
+ if (index != 0 && index != 1)
+ return -EINVAL;
+
+ status = acpi_evaluate_integer(handle, index ? GET_AUX0 : GET_AUX1,
+ NULL, &temp);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+ if ((index && value < temp) || (!index && value > temp))
+ return -EINVAL;
+
+ arg.integer.value = value;
+ status = acpi_evaluate_integer(handle, index ? SET_AUX1 : SET_AUX0,
+ &args, &temp);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ /* do we need to check the return value of SAX0/SAX1 ? */
+
+ return 0;
+}
+
+#define to_intel_menlow_attr(_attr) \
+ container_of(_attr, struct intel_menlow_attribute, attr)
+
+static ssize_t aux0_show(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ struct intel_menlow_attribute *attr = to_intel_menlow_attr(dev_attr);
+ unsigned long long value;
+ int result;
+
+ result = sensor_get_auxtrip(attr->handle, 0, &value);
+
+ return result ? result : sprintf(buf, "%lu", KELVIN_TO_CELSIUS(value));
+}
+
+static ssize_t aux1_show(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ struct intel_menlow_attribute *attr = to_intel_menlow_attr(dev_attr);
+ unsigned long long value;
+ int result;
+
+ result = sensor_get_auxtrip(attr->handle, 1, &value);
+
+ return result ? result : sprintf(buf, "%lu", KELVIN_TO_CELSIUS(value));
+}
+
+static ssize_t aux0_store(struct device *dev,
+ struct device_attribute *dev_attr,
+ const char *buf, size_t count)
+{
+ struct intel_menlow_attribute *attr = to_intel_menlow_attr(dev_attr);
+ int value;
+ int result;
+
+ /*Sanity check; should be a positive integer */
+ if (!sscanf(buf, "%d", &value))
+ return -EINVAL;
+
+ if (value < 0)
+ return -EINVAL;
+
+ result = sensor_set_auxtrip(attr->handle, 0, CELSIUS_TO_KELVIN(value));
+ return result ? result : count;
+}
+
+static ssize_t aux1_store(struct device *dev,
+ struct device_attribute *dev_attr,
+ const char *buf, size_t count)
+{
+ struct intel_menlow_attribute *attr = to_intel_menlow_attr(dev_attr);
+ int value;
+ int result;
+
+ /*Sanity check; should be a positive integer */
+ if (!sscanf(buf, "%d", &value))
+ return -EINVAL;
+
+ if (value < 0)
+ return -EINVAL;
+
+ result = sensor_set_auxtrip(attr->handle, 1, CELSIUS_TO_KELVIN(value));
+ return result ? result : count;
+}
+
+/* BIOS can enable/disable the thermal user application in dabney platform */
+#define BIOS_ENABLED "\\_TZ.GSTS"
+static ssize_t bios_enabled_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ acpi_status status;
+ unsigned long long bios_enabled;
+
+ status = acpi_evaluate_integer(NULL, BIOS_ENABLED, NULL, &bios_enabled);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ return sprintf(buf, "%s\n", bios_enabled ? "enabled" : "disabled");
+}
+
+static int intel_menlow_add_one_attribute(char *name, umode_t mode, void *show,
+ void *store, struct device *dev,
+ acpi_handle handle)
+{
+ struct intel_menlow_attribute *attr;
+ int result;
+
+ attr = kzalloc(sizeof(struct intel_menlow_attribute), GFP_KERNEL);
+ if (!attr)
+ return -ENOMEM;
+
+ sysfs_attr_init(&attr->attr.attr); /* That is consistent naming :D */
+ attr->attr.attr.name = name;
+ attr->attr.attr.mode = mode;
+ attr->attr.show = show;
+ attr->attr.store = store;
+ attr->device = dev;
+ attr->handle = handle;
+
+ result = device_create_file(dev, &attr->attr);
+ if (result) {
+ kfree(attr);
+ return result;
+ }
+
+ mutex_lock(&intel_menlow_attr_lock);
+ list_add_tail(&attr->node, &intel_menlow_attr_list);
+ mutex_unlock(&intel_menlow_attr_lock);
+
+ return 0;
+}
+
+static acpi_status intel_menlow_register_sensor(acpi_handle handle, u32 lvl,
+ void *context, void **rv)
+{
+ acpi_status status;
+ acpi_handle dummy;
+ struct thermal_zone_device *thermal;
+ int result;
+
+ result = acpi_bus_get_private_data(handle, (void **)&thermal);
+ if (result)
+ return 0;
+
+ /* _TZ must have the AUX0/1 methods */
+ status = acpi_get_handle(handle, GET_AUX0, &dummy);
+ if (ACPI_FAILURE(status))
+ return (status == AE_NOT_FOUND) ? AE_OK : status;
+
+ status = acpi_get_handle(handle, SET_AUX0, &dummy);
+ if (ACPI_FAILURE(status))
+ return (status == AE_NOT_FOUND) ? AE_OK : status;
+
+ result = intel_menlow_add_one_attribute("aux0", 0644,
+ aux0_show, aux0_store,
+ &thermal->device, handle);
+ if (result)
+ return AE_ERROR;
+
+ status = acpi_get_handle(handle, GET_AUX1, &dummy);
+ if (ACPI_FAILURE(status))
+ goto aux1_not_found;
+
+ status = acpi_get_handle(handle, SET_AUX1, &dummy);
+ if (ACPI_FAILURE(status))
+ goto aux1_not_found;
+
+ result = intel_menlow_add_one_attribute("aux1", 0644,
+ aux1_show, aux1_store,
+ &thermal->device, handle);
+ if (result) {
+ intel_menlow_unregister_sensor();
+ return AE_ERROR;
+ }
+
+ /*
+ * create the "dabney_enabled" attribute which means the user app
+ * should be loaded or not
+ */
+
+ result = intel_menlow_add_one_attribute("bios_enabled", 0444,
+ bios_enabled_show, NULL,
+ &thermal->device, handle);
+ if (result) {
+ intel_menlow_unregister_sensor();
+ return AE_ERROR;
+ }
+
+ return AE_OK;
+
+ aux1_not_found:
+ if (status == AE_NOT_FOUND)
+ return AE_OK;
+
+ intel_menlow_unregister_sensor();
+ return status;
+}
+
+static void intel_menlow_unregister_sensor(void)
+{
+ struct intel_menlow_attribute *pos, *next;
+
+ mutex_lock(&intel_menlow_attr_lock);
+ list_for_each_entry_safe(pos, next, &intel_menlow_attr_list, node) {
+ list_del(&pos->node);
+ device_remove_file(pos->device, &pos->attr);
+ kfree(pos);
+ }
+ mutex_unlock(&intel_menlow_attr_lock);
+
+ return;
+}
+
+static int __init intel_menlow_module_init(void)
+{
+ int result = -ENODEV;
+ acpi_status status;
+ unsigned long long enable;
+
+ if (acpi_disabled)
+ return result;
+
+ /* Looking for the \_TZ.GSTS method */
+ status = acpi_evaluate_integer(NULL, BIOS_ENABLED, NULL, &enable);
+ if (ACPI_FAILURE(status) || !enable)
+ return -ENODEV;
+
+ /* Looking for ACPI device MEM0 with hardware id INT0002 */
+ result = acpi_bus_register_driver(&intel_menlow_memory_driver);
+ if (result)
+ return result;
+
+ /* Looking for sensors in each ACPI thermal zone */
+ status = acpi_walk_namespace(ACPI_TYPE_THERMAL, ACPI_ROOT_OBJECT,
+ ACPI_UINT32_MAX,
+ intel_menlow_register_sensor, NULL, NULL, NULL);
+ if (ACPI_FAILURE(status)) {
+ acpi_bus_unregister_driver(&intel_menlow_memory_driver);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void __exit intel_menlow_module_exit(void)
+{
+ acpi_bus_unregister_driver(&intel_menlow_memory_driver);
+ intel_menlow_unregister_sensor();
+}
+
+module_init(intel_menlow_module_init);
+module_exit(intel_menlow_module_exit);
diff --git a/drivers/platform/x86/intel_mid_powerbtn.c b/drivers/platform/x86/intel_mid_powerbtn.c
new file mode 100644
index 000000000..22606d6b2
--- /dev/null
+++ b/drivers/platform/x86/intel_mid_powerbtn.c
@@ -0,0 +1,146 @@
+/*
+ * Power button driver for Medfield.
+ *
+ * Copyright (C) 2010 Intel Corp
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/mfd/intel_msic.h>
+
+#define DRIVER_NAME "msic_power_btn"
+
+#define MSIC_PB_LEVEL (1 << 3) /* 1 - release, 0 - press */
+
+/*
+ * MSIC document ti_datasheet defines the 1st bit reg 0x21 is used to mask
+ * power button interrupt
+ */
+#define MSIC_PWRBTNM (1 << 0)
+
+static irqreturn_t mfld_pb_isr(int irq, void *dev_id)
+{
+ struct input_dev *input = dev_id;
+ int ret;
+ u8 pbstat;
+
+ ret = intel_msic_reg_read(INTEL_MSIC_PBSTATUS, &pbstat);
+ dev_dbg(input->dev.parent, "PB_INT status= %d\n", pbstat);
+
+ if (ret < 0) {
+ dev_err(input->dev.parent, "Read error %d while reading"
+ " MSIC_PB_STATUS\n", ret);
+ } else {
+ input_event(input, EV_KEY, KEY_POWER,
+ !(pbstat & MSIC_PB_LEVEL));
+ input_sync(input);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int mfld_pb_probe(struct platform_device *pdev)
+{
+ struct input_dev *input;
+ int irq = platform_get_irq(pdev, 0);
+ int error;
+
+ if (irq < 0)
+ return -EINVAL;
+
+ input = input_allocate_device();
+ if (!input)
+ return -ENOMEM;
+
+ input->name = pdev->name;
+ input->phys = "power-button/input0";
+ input->id.bustype = BUS_HOST;
+ input->dev.parent = &pdev->dev;
+
+ input_set_capability(input, EV_KEY, KEY_POWER);
+
+ error = request_threaded_irq(irq, NULL, mfld_pb_isr, IRQF_NO_SUSPEND,
+ DRIVER_NAME, input);
+ if (error) {
+ dev_err(&pdev->dev, "Unable to request irq %d for mfld power"
+ "button\n", irq);
+ goto err_free_input;
+ }
+
+ error = input_register_device(input);
+ if (error) {
+ dev_err(&pdev->dev, "Unable to register input dev, error "
+ "%d\n", error);
+ goto err_free_irq;
+ }
+
+ platform_set_drvdata(pdev, input);
+
+ /*
+ * SCU firmware might send power button interrupts to IA core before
+ * kernel boots and doesn't get EOI from IA core. The first bit of
+ * MSIC reg 0x21 is kept masked, and SCU firmware doesn't send new
+ * power interrupt to Android kernel. Unmask the bit when probing
+ * power button in kernel.
+ * There is a very narrow race between irq handler and power button
+ * initialization. The race happens rarely. So we needn't worry
+ * about it.
+ */
+ error = intel_msic_reg_update(INTEL_MSIC_IRQLVL1MSK, 0, MSIC_PWRBTNM);
+ if (error) {
+ dev_err(&pdev->dev, "Unable to clear power button interrupt, "
+ "error: %d\n", error);
+ goto err_free_irq;
+ }
+
+ return 0;
+
+err_free_irq:
+ free_irq(irq, input);
+err_free_input:
+ input_free_device(input);
+ return error;
+}
+
+static int mfld_pb_remove(struct platform_device *pdev)
+{
+ struct input_dev *input = platform_get_drvdata(pdev);
+ int irq = platform_get_irq(pdev, 0);
+
+ free_irq(irq, input);
+ input_unregister_device(input);
+
+ return 0;
+}
+
+static struct platform_driver mfld_pb_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ },
+ .probe = mfld_pb_probe,
+ .remove = mfld_pb_remove,
+};
+
+module_platform_driver(mfld_pb_driver);
+
+MODULE_AUTHOR("Hong Liu <hong.liu@intel.com>");
+MODULE_DESCRIPTION("Intel Medfield Power Button Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/drivers/platform/x86/intel_mid_thermal.c b/drivers/platform/x86/intel_mid_thermal.c
new file mode 100644
index 000000000..0944e834a
--- /dev/null
+++ b/drivers/platform/x86/intel_mid_thermal.c
@@ -0,0 +1,569 @@
+/*
+ * intel_mid_thermal.c - Intel MID platform thermal driver
+ *
+ * Copyright (C) 2011 Intel Corporation
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Author: Durgadoss R <durgadoss.r@intel.com>
+ */
+
+#define pr_fmt(fmt) "intel_mid_thermal: " fmt
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/param.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/pm.h>
+#include <linux/thermal.h>
+#include <linux/mfd/intel_msic.h>
+
+/* Number of thermal sensors */
+#define MSIC_THERMAL_SENSORS 4
+
+/* ADC1 - thermal registers */
+#define MSIC_ADC_ENBL 0x10
+#define MSIC_ADC_START 0x08
+
+#define MSIC_ADCTHERM_ENBL 0x04
+#define MSIC_ADCRRDATA_ENBL 0x05
+#define MSIC_CHANL_MASK_VAL 0x0F
+
+#define MSIC_STOPBIT_MASK 16
+#define MSIC_ADCTHERM_MASK 4
+/* Number of ADC channels */
+#define ADC_CHANLS_MAX 15
+#define ADC_LOOP_MAX (ADC_CHANLS_MAX - MSIC_THERMAL_SENSORS)
+
+/* ADC channel code values */
+#define SKIN_SENSOR0_CODE 0x08
+#define SKIN_SENSOR1_CODE 0x09
+#define SYS_SENSOR_CODE 0x0A
+#define MSIC_DIE_SENSOR_CODE 0x03
+
+#define SKIN_THERM_SENSOR0 0
+#define SKIN_THERM_SENSOR1 1
+#define SYS_THERM_SENSOR2 2
+#define MSIC_DIE_THERM_SENSOR3 3
+
+/* ADC code range */
+#define ADC_MAX 977
+#define ADC_MIN 162
+#define ADC_VAL0C 887
+#define ADC_VAL20C 720
+#define ADC_VAL40C 508
+#define ADC_VAL60C 315
+
+/* ADC base addresses */
+#define ADC_CHNL_START_ADDR INTEL_MSIC_ADC1ADDR0 /* increments by 1 */
+#define ADC_DATA_START_ADDR INTEL_MSIC_ADC1SNS0H /* increments by 2 */
+
+/* MSIC die attributes */
+#define MSIC_DIE_ADC_MIN 488
+#define MSIC_DIE_ADC_MAX 1004
+
+/* This holds the address of the first free ADC channel,
+ * among the 15 channels
+ */
+static int channel_index;
+
+struct platform_info {
+ struct platform_device *pdev;
+ struct thermal_zone_device *tzd[MSIC_THERMAL_SENSORS];
+};
+
+struct thermal_device_info {
+ unsigned int chnl_addr;
+ int direct;
+ /* This holds the current temperature in millidegree celsius */
+ long curr_temp;
+};
+
+/**
+ * to_msic_die_temp - converts adc_val to msic_die temperature
+ * @adc_val: ADC value to be converted
+ *
+ * Can sleep
+ */
+static int to_msic_die_temp(uint16_t adc_val)
+{
+ return (368 * (adc_val) / 1000) - 220;
+}
+
+/**
+ * is_valid_adc - checks whether the adc code is within the defined range
+ * @min: minimum value for the sensor
+ * @max: maximum value for the sensor
+ *
+ * Can sleep
+ */
+static int is_valid_adc(uint16_t adc_val, uint16_t min, uint16_t max)
+{
+ return (adc_val >= min) && (adc_val <= max);
+}
+
+/**
+ * adc_to_temp - converts the ADC code to temperature in C
+ * @direct: true if ths channel is direct index
+ * @adc_val: the adc_val that needs to be converted
+ * @tp: temperature return value
+ *
+ * Linear approximation is used to covert the skin adc value into temperature.
+ * This technique is used to avoid very long look-up table to get
+ * the appropriate temp value from ADC value.
+ * The adc code vs sensor temp curve is split into five parts
+ * to achieve very close approximate temp value with less than
+ * 0.5C error
+ */
+static int adc_to_temp(int direct, uint16_t adc_val, unsigned long *tp)
+{
+ int temp;
+
+ /* Direct conversion for die temperature */
+ if (direct) {
+ if (is_valid_adc(adc_val, MSIC_DIE_ADC_MIN, MSIC_DIE_ADC_MAX)) {
+ *tp = to_msic_die_temp(adc_val) * 1000;
+ return 0;
+ }
+ return -ERANGE;
+ }
+
+ if (!is_valid_adc(adc_val, ADC_MIN, ADC_MAX))
+ return -ERANGE;
+
+ /* Linear approximation for skin temperature */
+ if (adc_val > ADC_VAL0C)
+ temp = 177 - (adc_val/5);
+ else if ((adc_val <= ADC_VAL0C) && (adc_val > ADC_VAL20C))
+ temp = 111 - (adc_val/8);
+ else if ((adc_val <= ADC_VAL20C) && (adc_val > ADC_VAL40C))
+ temp = 92 - (adc_val/10);
+ else if ((adc_val <= ADC_VAL40C) && (adc_val > ADC_VAL60C))
+ temp = 91 - (adc_val/10);
+ else
+ temp = 112 - (adc_val/6);
+
+ /* Convert temperature in celsius to milli degree celsius */
+ *tp = temp * 1000;
+ return 0;
+}
+
+/**
+ * mid_read_temp - read sensors for temperature
+ * @temp: holds the current temperature for the sensor after reading
+ *
+ * reads the adc_code from the channel and converts it to real
+ * temperature. The converted value is stored in temp.
+ *
+ * Can sleep
+ */
+static int mid_read_temp(struct thermal_zone_device *tzd, unsigned long *temp)
+{
+ struct thermal_device_info *td_info = tzd->devdata;
+ uint16_t adc_val, addr;
+ uint8_t data = 0;
+ int ret;
+ unsigned long curr_temp;
+
+
+ addr = td_info->chnl_addr;
+
+ /* Enable the msic for conversion before reading */
+ ret = intel_msic_reg_write(INTEL_MSIC_ADC1CNTL3, MSIC_ADCRRDATA_ENBL);
+ if (ret)
+ return ret;
+
+ /* Re-toggle the RRDATARD bit (temporary workaround) */
+ ret = intel_msic_reg_write(INTEL_MSIC_ADC1CNTL3, MSIC_ADCTHERM_ENBL);
+ if (ret)
+ return ret;
+
+ /* Read the higher bits of data */
+ ret = intel_msic_reg_read(addr, &data);
+ if (ret)
+ return ret;
+
+ /* Shift bits to accommodate the lower two data bits */
+ adc_val = (data << 2);
+ addr++;
+
+ ret = intel_msic_reg_read(addr, &data);/* Read lower bits */
+ if (ret)
+ return ret;
+
+ /* Adding lower two bits to the higher bits */
+ data &= 03;
+ adc_val += data;
+
+ /* Convert ADC value to temperature */
+ ret = adc_to_temp(td_info->direct, adc_val, &curr_temp);
+ if (ret == 0)
+ *temp = td_info->curr_temp = curr_temp;
+ return ret;
+}
+
+/**
+ * configure_adc - enables/disables the ADC for conversion
+ * @val: zero: disables the ADC non-zero:enables the ADC
+ *
+ * Enable/Disable the ADC depending on the argument
+ *
+ * Can sleep
+ */
+static int configure_adc(int val)
+{
+ int ret;
+ uint8_t data;
+
+ ret = intel_msic_reg_read(INTEL_MSIC_ADC1CNTL1, &data);
+ if (ret)
+ return ret;
+
+ if (val) {
+ /* Enable and start the ADC */
+ data |= (MSIC_ADC_ENBL | MSIC_ADC_START);
+ } else {
+ /* Just stop the ADC */
+ data &= (~MSIC_ADC_START);
+ }
+ return intel_msic_reg_write(INTEL_MSIC_ADC1CNTL1, data);
+}
+
+/**
+ * set_up_therm_channel - enable thermal channel for conversion
+ * @base_addr: index of free msic ADC channel
+ *
+ * Enable all the three channels for conversion
+ *
+ * Can sleep
+ */
+static int set_up_therm_channel(u16 base_addr)
+{
+ int ret;
+
+ /* Enable all the sensor channels */
+ ret = intel_msic_reg_write(base_addr, SKIN_SENSOR0_CODE);
+ if (ret)
+ return ret;
+
+ ret = intel_msic_reg_write(base_addr + 1, SKIN_SENSOR1_CODE);
+ if (ret)
+ return ret;
+
+ ret = intel_msic_reg_write(base_addr + 2, SYS_SENSOR_CODE);
+ if (ret)
+ return ret;
+
+ /* Since this is the last channel, set the stop bit
+ * to 1 by ORing the DIE_SENSOR_CODE with 0x10 */
+ ret = intel_msic_reg_write(base_addr + 3,
+ (MSIC_DIE_SENSOR_CODE | 0x10));
+ if (ret)
+ return ret;
+
+ /* Enable ADC and start it */
+ return configure_adc(1);
+}
+
+/**
+ * reset_stopbit - sets the stop bit to 0 on the given channel
+ * @addr: address of the channel
+ *
+ * Can sleep
+ */
+static int reset_stopbit(uint16_t addr)
+{
+ int ret;
+ uint8_t data;
+ ret = intel_msic_reg_read(addr, &data);
+ if (ret)
+ return ret;
+ /* Set the stop bit to zero */
+ return intel_msic_reg_write(addr, (data & 0xEF));
+}
+
+/**
+ * find_free_channel - finds an empty channel for conversion
+ *
+ * If the ADC is not enabled then start using 0th channel
+ * itself. Otherwise find an empty channel by looking for a
+ * channel in which the stopbit is set to 1. returns the index
+ * of the first free channel if succeeds or an error code.
+ *
+ * Context: can sleep
+ *
+ * FIXME: Ultimately the channel allocator will move into the intel_scu_ipc
+ * code.
+ */
+static int find_free_channel(void)
+{
+ int ret;
+ int i;
+ uint8_t data;
+
+ /* check whether ADC is enabled */
+ ret = intel_msic_reg_read(INTEL_MSIC_ADC1CNTL1, &data);
+ if (ret)
+ return ret;
+
+ if ((data & MSIC_ADC_ENBL) == 0)
+ return 0;
+
+ /* ADC is already enabled; Looking for an empty channel */
+ for (i = 0; i < ADC_CHANLS_MAX; i++) {
+ ret = intel_msic_reg_read(ADC_CHNL_START_ADDR + i, &data);
+ if (ret)
+ return ret;
+
+ if (data & MSIC_STOPBIT_MASK) {
+ ret = i;
+ break;
+ }
+ }
+ return (ret > ADC_LOOP_MAX) ? (-EINVAL) : ret;
+}
+
+/**
+ * mid_initialize_adc - initializing the ADC
+ * @dev: our device structure
+ *
+ * Initialize the ADC for reading thermistor values. Can sleep.
+ */
+static int mid_initialize_adc(struct device *dev)
+{
+ u8 data;
+ u16 base_addr;
+ int ret;
+
+ /*
+ * Ensure that adctherm is disabled before we
+ * initialize the ADC
+ */
+ ret = intel_msic_reg_read(INTEL_MSIC_ADC1CNTL3, &data);
+ if (ret)
+ return ret;
+
+ data &= ~MSIC_ADCTHERM_MASK;
+ ret = intel_msic_reg_write(INTEL_MSIC_ADC1CNTL3, data);
+ if (ret)
+ return ret;
+
+ /* Index of the first channel in which the stop bit is set */
+ channel_index = find_free_channel();
+ if (channel_index < 0) {
+ dev_err(dev, "No free ADC channels");
+ return channel_index;
+ }
+
+ base_addr = ADC_CHNL_START_ADDR + channel_index;
+
+ if (!(channel_index == 0 || channel_index == ADC_LOOP_MAX)) {
+ /* Reset stop bit for channels other than 0 and 12 */
+ ret = reset_stopbit(base_addr);
+ if (ret)
+ return ret;
+
+ /* Index of the first free channel */
+ base_addr++;
+ channel_index++;
+ }
+
+ ret = set_up_therm_channel(base_addr);
+ if (ret) {
+ dev_err(dev, "unable to enable ADC");
+ return ret;
+ }
+ dev_dbg(dev, "ADC initialization successful");
+ return ret;
+}
+
+/**
+ * initialize_sensor - sets default temp and timer ranges
+ * @index: index of the sensor
+ *
+ * Context: can sleep
+ */
+static struct thermal_device_info *initialize_sensor(int index)
+{
+ struct thermal_device_info *td_info =
+ kzalloc(sizeof(struct thermal_device_info), GFP_KERNEL);
+
+ if (!td_info)
+ return NULL;
+
+ /* Set the base addr of the channel for this sensor */
+ td_info->chnl_addr = ADC_DATA_START_ADDR + 2 * (channel_index + index);
+ /* Sensor 3 is direct conversion */
+ if (index == 3)
+ td_info->direct = 1;
+ return td_info;
+}
+
+/**
+ * mid_thermal_resume - resume routine
+ * @dev: device structure
+ *
+ * mid thermal resume: re-initializes the adc. Can sleep.
+ */
+static int mid_thermal_resume(struct device *dev)
+{
+ return mid_initialize_adc(dev);
+}
+
+/**
+ * mid_thermal_suspend - suspend routine
+ * @dev: device structure
+ *
+ * mid thermal suspend implements the suspend functionality
+ * by stopping the ADC. Can sleep.
+ */
+static int mid_thermal_suspend(struct device *dev)
+{
+ /*
+ * This just stops the ADC and does not disable it.
+ * temporary workaround until we have a generic ADC driver.
+ * If 0 is passed, it disables the ADC.
+ */
+ return configure_adc(0);
+}
+
+static SIMPLE_DEV_PM_OPS(mid_thermal_pm,
+ mid_thermal_suspend, mid_thermal_resume);
+
+/**
+ * read_curr_temp - reads the current temperature and stores in temp
+ * @temp: holds the current temperature value after reading
+ *
+ * Can sleep
+ */
+static int read_curr_temp(struct thermal_zone_device *tzd, unsigned long *temp)
+{
+ WARN_ON(tzd == NULL);
+ return mid_read_temp(tzd, temp);
+}
+
+/* Can't be const */
+static struct thermal_zone_device_ops tzd_ops = {
+ .get_temp = read_curr_temp,
+};
+
+/**
+ * mid_thermal_probe - mfld thermal initialize
+ * @pdev: platform device structure
+ *
+ * mid thermal probe initializes the hardware and registers
+ * all the sensors with the generic thermal framework. Can sleep.
+ */
+static int mid_thermal_probe(struct platform_device *pdev)
+{
+ static char *name[MSIC_THERMAL_SENSORS] = {
+ "skin0", "skin1", "sys", "msicdie"
+ };
+
+ int ret;
+ int i;
+ struct platform_info *pinfo;
+
+ pinfo = devm_kzalloc(&pdev->dev, sizeof(struct platform_info),
+ GFP_KERNEL);
+ if (!pinfo)
+ return -ENOMEM;
+
+ /* Initializing the hardware */
+ ret = mid_initialize_adc(&pdev->dev);
+ if (ret) {
+ dev_err(&pdev->dev, "ADC init failed");
+ return ret;
+ }
+
+ /* Register each sensor with the generic thermal framework*/
+ for (i = 0; i < MSIC_THERMAL_SENSORS; i++) {
+ struct thermal_device_info *td_info = initialize_sensor(i);
+
+ if (!td_info) {
+ ret = -ENOMEM;
+ goto err;
+ }
+ pinfo->tzd[i] = thermal_zone_device_register(name[i],
+ 0, 0, td_info, &tzd_ops, NULL, 0, 0);
+ if (IS_ERR(pinfo->tzd[i])) {
+ kfree(td_info);
+ ret = PTR_ERR(pinfo->tzd[i]);
+ goto err;
+ }
+ }
+
+ pinfo->pdev = pdev;
+ platform_set_drvdata(pdev, pinfo);
+ return 0;
+
+err:
+ while (--i >= 0) {
+ kfree(pinfo->tzd[i]->devdata);
+ thermal_zone_device_unregister(pinfo->tzd[i]);
+ }
+ configure_adc(0);
+ return ret;
+}
+
+/**
+ * mid_thermal_remove - mfld thermal finalize
+ * @dev: platform device structure
+ *
+ * MLFD thermal remove unregisters all the sensors from the generic
+ * thermal framework. Can sleep.
+ */
+static int mid_thermal_remove(struct platform_device *pdev)
+{
+ int i;
+ struct platform_info *pinfo = platform_get_drvdata(pdev);
+
+ for (i = 0; i < MSIC_THERMAL_SENSORS; i++) {
+ kfree(pinfo->tzd[i]->devdata);
+ thermal_zone_device_unregister(pinfo->tzd[i]);
+ }
+
+ /* Stop the ADC */
+ return configure_adc(0);
+}
+
+#define DRIVER_NAME "msic_thermal"
+
+static const struct platform_device_id therm_id_table[] = {
+ { DRIVER_NAME, 1 },
+ { "msic_thermal", 1 },
+ { }
+};
+
+static struct platform_driver mid_thermal_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .pm = &mid_thermal_pm,
+ },
+ .probe = mid_thermal_probe,
+ .remove = mid_thermal_remove,
+ .id_table = therm_id_table,
+};
+
+module_platform_driver(mid_thermal_driver);
+
+MODULE_AUTHOR("Durgadoss R <durgadoss.r@intel.com>");
+MODULE_DESCRIPTION("Intel Medfield Platform Thermal Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/intel_oaktrail.c b/drivers/platform/x86/intel_oaktrail.c
new file mode 100644
index 000000000..8037c8b46
--- /dev/null
+++ b/drivers/platform/x86/intel_oaktrail.c
@@ -0,0 +1,392 @@
+/*
+ * intel_oaktrail.c - Intel OakTrail Platform support.
+ *
+ * Copyright (C) 2010-2011 Intel Corporation
+ * Author: Yin Kangkai (kangkai.yin@intel.com)
+ *
+ * based on Compal driver, Copyright (C) 2008 Cezary Jackiewicz
+ * <cezary.jackiewicz (at) gmail.com>, based on MSI driver
+ * Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * This driver does below things:
+ * 1. registers itself in the Linux backlight control in
+ * /sys/class/backlight/intel_oaktrail/
+ *
+ * 2. registers in the rfkill subsystem here: /sys/class/rfkill/rfkillX/
+ * for these components: wifi, bluetooth, wwan (3g), gps
+ *
+ * This driver might work on other products based on Oaktrail. If you
+ * want to try it you can pass force=1 as argument to the module which
+ * will force it to load even when the DMI data doesn't identify the
+ * product as compatible.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/fb.h>
+#include <linux/mutex.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/backlight.h>
+#include <linux/platform_device.h>
+#include <linux/dmi.h>
+#include <linux/rfkill.h>
+
+#define DRIVER_NAME "intel_oaktrail"
+#define DRIVER_VERSION "0.4ac1"
+
+/*
+ * This is the devices status address in EC space, and the control bits
+ * definition:
+ *
+ * (1 << 0): Camera enable/disable, RW.
+ * (1 << 1): Bluetooth enable/disable, RW.
+ * (1 << 2): GPS enable/disable, RW.
+ * (1 << 3): WiFi enable/disable, RW.
+ * (1 << 4): WWAN (3G) enable/disable, RW.
+ * (1 << 5): Touchscreen enable/disable, Read Only.
+ */
+#define OT_EC_DEVICE_STATE_ADDRESS 0xD6
+
+#define OT_EC_CAMERA_MASK (1 << 0)
+#define OT_EC_BT_MASK (1 << 1)
+#define OT_EC_GPS_MASK (1 << 2)
+#define OT_EC_WIFI_MASK (1 << 3)
+#define OT_EC_WWAN_MASK (1 << 4)
+#define OT_EC_TS_MASK (1 << 5)
+
+/*
+ * This is the address in EC space and commands used to control LCD backlight:
+ *
+ * Two steps needed to change the LCD backlight:
+ * 1. write the backlight percentage into OT_EC_BL_BRIGHTNESS_ADDRESS;
+ * 2. write OT_EC_BL_CONTROL_ON_DATA into OT_EC_BL_CONTROL_ADDRESS.
+ *
+ * To read the LCD back light, just read out the value from
+ * OT_EC_BL_BRIGHTNESS_ADDRESS.
+ *
+ * LCD backlight brightness range: 0 - 100 (OT_EC_BL_BRIGHTNESS_MAX)
+ */
+#define OT_EC_BL_BRIGHTNESS_ADDRESS 0x44
+#define OT_EC_BL_BRIGHTNESS_MAX 100
+#define OT_EC_BL_CONTROL_ADDRESS 0x3A
+#define OT_EC_BL_CONTROL_ON_DATA 0x1A
+
+
+static bool force;
+module_param(force, bool, 0);
+MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
+
+static struct platform_device *oaktrail_device;
+static struct backlight_device *oaktrail_bl_device;
+static struct rfkill *bt_rfkill;
+static struct rfkill *gps_rfkill;
+static struct rfkill *wifi_rfkill;
+static struct rfkill *wwan_rfkill;
+
+
+/* rfkill */
+static int oaktrail_rfkill_set(void *data, bool blocked)
+{
+ u8 value;
+ u8 result;
+ unsigned long radio = (unsigned long) data;
+
+ ec_read(OT_EC_DEVICE_STATE_ADDRESS, &result);
+
+ if (!blocked)
+ value = (u8) (result | radio);
+ else
+ value = (u8) (result & ~radio);
+
+ ec_write(OT_EC_DEVICE_STATE_ADDRESS, value);
+
+ return 0;
+}
+
+static const struct rfkill_ops oaktrail_rfkill_ops = {
+ .set_block = oaktrail_rfkill_set,
+};
+
+static struct rfkill *oaktrail_rfkill_new(char *name, enum rfkill_type type,
+ unsigned long mask)
+{
+ struct rfkill *rfkill_dev;
+ u8 value;
+ int err;
+
+ rfkill_dev = rfkill_alloc(name, &oaktrail_device->dev, type,
+ &oaktrail_rfkill_ops, (void *)mask);
+ if (!rfkill_dev)
+ return ERR_PTR(-ENOMEM);
+
+ ec_read(OT_EC_DEVICE_STATE_ADDRESS, &value);
+ rfkill_init_sw_state(rfkill_dev, (value & mask) != 1);
+
+ err = rfkill_register(rfkill_dev);
+ if (err) {
+ rfkill_destroy(rfkill_dev);
+ return ERR_PTR(err);
+ }
+
+ return rfkill_dev;
+}
+
+static inline void __oaktrail_rfkill_cleanup(struct rfkill *rf)
+{
+ if (rf) {
+ rfkill_unregister(rf);
+ rfkill_destroy(rf);
+ }
+}
+
+static void oaktrail_rfkill_cleanup(void)
+{
+ __oaktrail_rfkill_cleanup(wifi_rfkill);
+ __oaktrail_rfkill_cleanup(bt_rfkill);
+ __oaktrail_rfkill_cleanup(gps_rfkill);
+ __oaktrail_rfkill_cleanup(wwan_rfkill);
+}
+
+static int oaktrail_rfkill_init(void)
+{
+ int ret;
+
+ wifi_rfkill = oaktrail_rfkill_new("oaktrail-wifi",
+ RFKILL_TYPE_WLAN,
+ OT_EC_WIFI_MASK);
+ if (IS_ERR(wifi_rfkill)) {
+ ret = PTR_ERR(wifi_rfkill);
+ wifi_rfkill = NULL;
+ goto cleanup;
+ }
+
+ bt_rfkill = oaktrail_rfkill_new("oaktrail-bluetooth",
+ RFKILL_TYPE_BLUETOOTH,
+ OT_EC_BT_MASK);
+ if (IS_ERR(bt_rfkill)) {
+ ret = PTR_ERR(bt_rfkill);
+ bt_rfkill = NULL;
+ goto cleanup;
+ }
+
+ gps_rfkill = oaktrail_rfkill_new("oaktrail-gps",
+ RFKILL_TYPE_GPS,
+ OT_EC_GPS_MASK);
+ if (IS_ERR(gps_rfkill)) {
+ ret = PTR_ERR(gps_rfkill);
+ gps_rfkill = NULL;
+ goto cleanup;
+ }
+
+ wwan_rfkill = oaktrail_rfkill_new("oaktrail-wwan",
+ RFKILL_TYPE_WWAN,
+ OT_EC_WWAN_MASK);
+ if (IS_ERR(wwan_rfkill)) {
+ ret = PTR_ERR(wwan_rfkill);
+ wwan_rfkill = NULL;
+ goto cleanup;
+ }
+
+ return 0;
+
+cleanup:
+ oaktrail_rfkill_cleanup();
+ return ret;
+}
+
+
+/* backlight */
+static int get_backlight_brightness(struct backlight_device *b)
+{
+ u8 value;
+ ec_read(OT_EC_BL_BRIGHTNESS_ADDRESS, &value);
+
+ return value;
+}
+
+static int set_backlight_brightness(struct backlight_device *b)
+{
+ u8 percent = (u8) b->props.brightness;
+ if (percent < 0 || percent > OT_EC_BL_BRIGHTNESS_MAX)
+ return -EINVAL;
+
+ ec_write(OT_EC_BL_BRIGHTNESS_ADDRESS, percent);
+ ec_write(OT_EC_BL_CONTROL_ADDRESS, OT_EC_BL_CONTROL_ON_DATA);
+
+ return 0;
+}
+
+static const struct backlight_ops oaktrail_bl_ops = {
+ .get_brightness = get_backlight_brightness,
+ .update_status = set_backlight_brightness,
+};
+
+static int oaktrail_backlight_init(void)
+{
+ struct backlight_device *bd;
+ struct backlight_properties props;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = OT_EC_BL_BRIGHTNESS_MAX;
+ bd = backlight_device_register(DRIVER_NAME,
+ &oaktrail_device->dev, NULL,
+ &oaktrail_bl_ops,
+ &props);
+
+ if (IS_ERR(bd)) {
+ oaktrail_bl_device = NULL;
+ pr_warning("Unable to register backlight device\n");
+ return PTR_ERR(bd);
+ }
+
+ oaktrail_bl_device = bd;
+
+ bd->props.brightness = get_backlight_brightness(bd);
+ bd->props.power = FB_BLANK_UNBLANK;
+ backlight_update_status(bd);
+
+ return 0;
+}
+
+static void oaktrail_backlight_exit(void)
+{
+ backlight_device_unregister(oaktrail_bl_device);
+}
+
+static int oaktrail_probe(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static int oaktrail_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static struct platform_driver oaktrail_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ },
+ .probe = oaktrail_probe,
+ .remove = oaktrail_remove,
+};
+
+static int dmi_check_cb(const struct dmi_system_id *id)
+{
+ pr_info("Identified model '%s'\n", id->ident);
+ return 0;
+}
+
+static struct dmi_system_id __initdata oaktrail_dmi_table[] = {
+ {
+ .ident = "OakTrail platform",
+ .matches = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "OakTrail platform"),
+ },
+ .callback = dmi_check_cb
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(dmi, oaktrail_dmi_table);
+
+static int __init oaktrail_init(void)
+{
+ int ret;
+
+ if (acpi_disabled) {
+ pr_err("ACPI needs to be enabled for this driver to work!\n");
+ return -ENODEV;
+ }
+
+ if (!force && !dmi_check_system(oaktrail_dmi_table)) {
+ pr_err("Platform not recognized (You could try the module's force-parameter)");
+ return -ENODEV;
+ }
+
+ ret = platform_driver_register(&oaktrail_driver);
+ if (ret) {
+ pr_warning("Unable to register platform driver\n");
+ goto err_driver_reg;
+ }
+
+ oaktrail_device = platform_device_alloc(DRIVER_NAME, -1);
+ if (!oaktrail_device) {
+ pr_warning("Unable to allocate platform device\n");
+ ret = -ENOMEM;
+ goto err_device_alloc;
+ }
+
+ ret = platform_device_add(oaktrail_device);
+ if (ret) {
+ pr_warning("Unable to add platform device\n");
+ goto err_device_add;
+ }
+
+ if (!acpi_video_backlight_support()) {
+ ret = oaktrail_backlight_init();
+ if (ret)
+ goto err_backlight;
+
+ } else
+ pr_info("Backlight controlled by ACPI video driver\n");
+
+ ret = oaktrail_rfkill_init();
+ if (ret) {
+ pr_warning("Setup rfkill failed\n");
+ goto err_rfkill;
+ }
+
+ pr_info("Driver "DRIVER_VERSION" successfully loaded\n");
+ return 0;
+
+err_rfkill:
+ oaktrail_backlight_exit();
+err_backlight:
+ platform_device_del(oaktrail_device);
+err_device_add:
+ platform_device_put(oaktrail_device);
+err_device_alloc:
+ platform_driver_unregister(&oaktrail_driver);
+err_driver_reg:
+
+ return ret;
+}
+
+static void __exit oaktrail_cleanup(void)
+{
+ oaktrail_backlight_exit();
+ oaktrail_rfkill_cleanup();
+ platform_device_unregister(oaktrail_device);
+ platform_driver_unregister(&oaktrail_driver);
+
+ pr_info("Driver unloaded\n");
+}
+
+module_init(oaktrail_init);
+module_exit(oaktrail_cleanup);
+
+MODULE_AUTHOR("Yin Kangkai (kangkai.yin@intel.com)");
+MODULE_DESCRIPTION("Intel Oaktrail Platform ACPI Extras");
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/intel_pmic_gpio.c b/drivers/platform/x86/intel_pmic_gpio.c
new file mode 100644
index 000000000..709f0afda
--- /dev/null
+++ b/drivers/platform/x86/intel_pmic_gpio.c
@@ -0,0 +1,330 @@
+/* Moorestown PMIC GPIO (access through IPC) driver
+ * Copyright (c) 2008 - 2009, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* Supports:
+ * Moorestown platform PMIC chip
+ */
+
+#define pr_fmt(fmt) "%s: " fmt, __func__
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/stddef.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <asm/intel_scu_ipc.h>
+#include <linux/device.h>
+#include <linux/intel_pmic_gpio.h>
+#include <linux/platform_device.h>
+
+#define DRIVER_NAME "pmic_gpio"
+
+/* register offset that IPC driver should use
+ * 8 GPIO + 8 GPOSW (6 controllable) + 8GPO
+ */
+enum pmic_gpio_register {
+ GPIO0 = 0xE0,
+ GPIO7 = 0xE7,
+ GPIOINT = 0xE8,
+ GPOSWCTL0 = 0xEC,
+ GPOSWCTL5 = 0xF1,
+ GPO = 0xF4,
+};
+
+/* bits definition for GPIO & GPOSW */
+#define GPIO_DRV 0x01
+#define GPIO_DIR 0x02
+#define GPIO_DIN 0x04
+#define GPIO_DOU 0x08
+#define GPIO_INTCTL 0x30
+#define GPIO_DBC 0xc0
+
+#define GPOSW_DRV 0x01
+#define GPOSW_DOU 0x08
+#define GPOSW_RDRV 0x30
+
+#define GPIO_UPDATE_TYPE 0x80000000
+
+#define NUM_GPIO 24
+
+struct pmic_gpio {
+ struct mutex buslock;
+ struct gpio_chip chip;
+ void *gpiointr;
+ int irq;
+ unsigned irq_base;
+ unsigned int update_type;
+ u32 trigger_type;
+};
+
+static void pmic_program_irqtype(int gpio, int type)
+{
+ if (type & IRQ_TYPE_EDGE_RISING)
+ intel_scu_ipc_update_register(GPIO0 + gpio, 0x20, 0x20);
+ else
+ intel_scu_ipc_update_register(GPIO0 + gpio, 0x00, 0x20);
+
+ if (type & IRQ_TYPE_EDGE_FALLING)
+ intel_scu_ipc_update_register(GPIO0 + gpio, 0x10, 0x10);
+ else
+ intel_scu_ipc_update_register(GPIO0 + gpio, 0x00, 0x10);
+};
+
+static int pmic_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+ if (offset >= 8) {
+ pr_err("only pin 0-7 support input\n");
+ return -1;/* we only have 8 GPIO can use as input */
+ }
+ return intel_scu_ipc_update_register(GPIO0 + offset,
+ GPIO_DIR, GPIO_DIR);
+}
+
+static int pmic_gpio_direction_output(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ int rc = 0;
+
+ if (offset < 8)/* it is GPIO */
+ rc = intel_scu_ipc_update_register(GPIO0 + offset,
+ GPIO_DRV | (value ? GPIO_DOU : 0),
+ GPIO_DRV | GPIO_DOU | GPIO_DIR);
+ else if (offset < 16)/* it is GPOSW */
+ rc = intel_scu_ipc_update_register(GPOSWCTL0 + offset - 8,
+ GPOSW_DRV | (value ? GPOSW_DOU : 0),
+ GPOSW_DRV | GPOSW_DOU | GPOSW_RDRV);
+ else if (offset > 15 && offset < 24)/* it is GPO */
+ rc = intel_scu_ipc_update_register(GPO,
+ value ? 1 << (offset - 16) : 0,
+ 1 << (offset - 16));
+ else {
+ pr_err("invalid PMIC GPIO pin %d!\n", offset);
+ WARN_ON(1);
+ }
+
+ return rc;
+}
+
+static int pmic_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ u8 r;
+ int ret;
+
+ /* we only have 8 GPIO pins we can use as input */
+ if (offset >= 8)
+ return -EOPNOTSUPP;
+ ret = intel_scu_ipc_ioread8(GPIO0 + offset, &r);
+ if (ret < 0)
+ return ret;
+ return r & GPIO_DIN;
+}
+
+static void pmic_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ if (offset < 8)/* it is GPIO */
+ intel_scu_ipc_update_register(GPIO0 + offset,
+ GPIO_DRV | (value ? GPIO_DOU : 0),
+ GPIO_DRV | GPIO_DOU);
+ else if (offset < 16)/* it is GPOSW */
+ intel_scu_ipc_update_register(GPOSWCTL0 + offset - 8,
+ GPOSW_DRV | (value ? GPOSW_DOU : 0),
+ GPOSW_DRV | GPOSW_DOU | GPOSW_RDRV);
+ else if (offset > 15 && offset < 24) /* it is GPO */
+ intel_scu_ipc_update_register(GPO,
+ value ? 1 << (offset - 16) : 0,
+ 1 << (offset - 16));
+}
+
+/*
+ * This is called from genirq with pg->buslock locked and
+ * irq_desc->lock held. We can not access the scu bus here, so we
+ * store the change and update in the bus_sync_unlock() function below
+ */
+static int pmic_irq_type(struct irq_data *data, unsigned type)
+{
+ struct pmic_gpio *pg = irq_data_get_irq_chip_data(data);
+ u32 gpio = data->irq - pg->irq_base;
+
+ if (gpio >= pg->chip.ngpio)
+ return -EINVAL;
+
+ pg->trigger_type = type;
+ pg->update_type = gpio | GPIO_UPDATE_TYPE;
+ return 0;
+}
+
+static int pmic_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+ struct pmic_gpio *pg = container_of(chip, struct pmic_gpio, chip);
+
+ return pg->irq_base + offset;
+}
+
+static void pmic_bus_lock(struct irq_data *data)
+{
+ struct pmic_gpio *pg = irq_data_get_irq_chip_data(data);
+
+ mutex_lock(&pg->buslock);
+}
+
+static void pmic_bus_sync_unlock(struct irq_data *data)
+{
+ struct pmic_gpio *pg = irq_data_get_irq_chip_data(data);
+
+ if (pg->update_type) {
+ unsigned int gpio = pg->update_type & ~GPIO_UPDATE_TYPE;
+
+ pmic_program_irqtype(gpio, pg->trigger_type);
+ pg->update_type = 0;
+ }
+ mutex_unlock(&pg->buslock);
+}
+
+/* the gpiointr register is read-clear, so just do nothing. */
+static void pmic_irq_unmask(struct irq_data *data) { }
+
+static void pmic_irq_mask(struct irq_data *data) { }
+
+static struct irq_chip pmic_irqchip = {
+ .name = "PMIC-GPIO",
+ .irq_mask = pmic_irq_mask,
+ .irq_unmask = pmic_irq_unmask,
+ .irq_set_type = pmic_irq_type,
+ .irq_bus_lock = pmic_bus_lock,
+ .irq_bus_sync_unlock = pmic_bus_sync_unlock,
+};
+
+static irqreturn_t pmic_irq_handler(int irq, void *data)
+{
+ struct pmic_gpio *pg = data;
+ u8 intsts = *((u8 *)pg->gpiointr + 4);
+ int gpio;
+ irqreturn_t ret = IRQ_NONE;
+
+ for (gpio = 0; gpio < 8; gpio++) {
+ if (intsts & (1 << gpio)) {
+ pr_debug("pmic pin %d triggered\n", gpio);
+ generic_handle_irq(pg->irq_base + gpio);
+ ret = IRQ_HANDLED;
+ }
+ }
+ return ret;
+}
+
+static int platform_pmic_gpio_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ int irq = platform_get_irq(pdev, 0);
+ struct intel_pmic_gpio_platform_data *pdata = dev->platform_data;
+
+ struct pmic_gpio *pg;
+ int retval;
+ int i;
+
+ if (irq < 0) {
+ dev_dbg(dev, "no IRQ line\n");
+ return -EINVAL;
+ }
+
+ if (!pdata || !pdata->gpio_base || !pdata->irq_base) {
+ dev_dbg(dev, "incorrect or missing platform data\n");
+ return -EINVAL;
+ }
+
+ pg = kzalloc(sizeof(*pg), GFP_KERNEL);
+ if (!pg)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, pg);
+
+ pg->irq = irq;
+ /* setting up SRAM mapping for GPIOINT register */
+ pg->gpiointr = ioremap_nocache(pdata->gpiointr, 8);
+ if (!pg->gpiointr) {
+ pr_err("Can not map GPIOINT\n");
+ retval = -EINVAL;
+ goto err2;
+ }
+ pg->irq_base = pdata->irq_base;
+ pg->chip.label = "intel_pmic";
+ pg->chip.direction_input = pmic_gpio_direction_input;
+ pg->chip.direction_output = pmic_gpio_direction_output;
+ pg->chip.get = pmic_gpio_get;
+ pg->chip.set = pmic_gpio_set;
+ pg->chip.to_irq = pmic_gpio_to_irq;
+ pg->chip.base = pdata->gpio_base;
+ pg->chip.ngpio = NUM_GPIO;
+ pg->chip.can_sleep = 1;
+ pg->chip.dev = dev;
+
+ mutex_init(&pg->buslock);
+
+ pg->chip.dev = dev;
+ retval = gpiochip_add(&pg->chip);
+ if (retval) {
+ pr_err("Can not add pmic gpio chip\n");
+ goto err;
+ }
+
+ retval = request_irq(pg->irq, pmic_irq_handler, 0, "pmic", pg);
+ if (retval) {
+ pr_warn("Interrupt request failed\n");
+ goto fail_request_irq;
+ }
+
+ for (i = 0; i < 8; i++) {
+ irq_set_chip_and_handler_name(i + pg->irq_base,
+ &pmic_irqchip,
+ handle_simple_irq,
+ "demux");
+ irq_set_chip_data(i + pg->irq_base, pg);
+ }
+ return 0;
+
+fail_request_irq:
+ gpiochip_remove(&pg->chip);
+err:
+ iounmap(pg->gpiointr);
+err2:
+ kfree(pg);
+ return retval;
+}
+
+/* at the same time, register a platform driver
+ * this supports the sfi 0.81 fw */
+static struct platform_driver platform_pmic_gpio_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ },
+ .probe = platform_pmic_gpio_probe,
+};
+
+static int __init platform_pmic_gpio_init(void)
+{
+ return platform_driver_register(&platform_pmic_gpio_driver);
+}
+
+subsys_initcall(platform_pmic_gpio_init);
+
+MODULE_AUTHOR("Alek Du <alek.du@intel.com>");
+MODULE_DESCRIPTION("Intel Moorestown PMIC GPIO driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/platform/x86/intel_scu_ipc.c b/drivers/platform/x86/intel_scu_ipc.c
new file mode 100644
index 000000000..001b199a8
--- /dev/null
+++ b/drivers/platform/x86/intel_scu_ipc.c
@@ -0,0 +1,675 @@
+/*
+ * intel_scu_ipc.c: Driver for the Intel SCU IPC mechanism
+ *
+ * (C) Copyright 2008-2010,2015 Intel Corporation
+ * Author: Sreedhara DS (sreedhara.ds@intel.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ *
+ * SCU running in ARC processor communicates with other entity running in IA
+ * core through IPC mechanism which in turn messaging between IA core ad SCU.
+ * SCU has two IPC mechanism IPC-1 and IPC-2. IPC-1 is used between IA32 and
+ * SCU where IPC-2 is used between P-Unit and SCU. This driver delas with
+ * IPC-1 Driver provides an API for power control unit registers (e.g. MSIC)
+ * along with other APIs.
+ */
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/pm.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/sfi.h>
+#include <linux/module.h>
+#include <asm/intel-mid.h>
+#include <asm/intel_scu_ipc.h>
+
+/* IPC defines the following message types */
+#define IPCMSG_WATCHDOG_TIMER 0xF8 /* Set Kernel Watchdog Threshold */
+#define IPCMSG_BATTERY 0xEF /* Coulomb Counter Accumulator */
+#define IPCMSG_FW_UPDATE 0xFE /* Firmware update */
+#define IPCMSG_PCNTRL 0xFF /* Power controller unit read/write */
+#define IPCMSG_FW_REVISION 0xF4 /* Get firmware revision */
+
+/* Command id associated with message IPCMSG_PCNTRL */
+#define IPC_CMD_PCNTRL_W 0 /* Register write */
+#define IPC_CMD_PCNTRL_R 1 /* Register read */
+#define IPC_CMD_PCNTRL_M 2 /* Register read-modify-write */
+
+/*
+ * IPC register summary
+ *
+ * IPC register blocks are memory mapped at fixed address of PCI BAR 0.
+ * To read or write information to the SCU, driver writes to IPC-1 memory
+ * mapped registers. The following is the IPC mechanism
+ *
+ * 1. IA core cDMI interface claims this transaction and converts it to a
+ * Transaction Layer Packet (TLP) message which is sent across the cDMI.
+ *
+ * 2. South Complex cDMI block receives this message and writes it to
+ * the IPC-1 register block, causing an interrupt to the SCU
+ *
+ * 3. SCU firmware decodes this interrupt and IPC message and the appropriate
+ * message handler is called within firmware.
+ */
+
+#define IPC_WWBUF_SIZE 20 /* IPC Write buffer Size */
+#define IPC_RWBUF_SIZE 20 /* IPC Read buffer Size */
+#define IPC_IOC 0x100 /* IPC command register IOC bit */
+
+#define PCI_DEVICE_ID_LINCROFT 0x082a
+#define PCI_DEVICE_ID_PENWELL 0x080e
+#define PCI_DEVICE_ID_CLOVERVIEW 0x08ea
+#define PCI_DEVICE_ID_TANGIER 0x11a0
+
+/* intel scu ipc driver data */
+struct intel_scu_ipc_pdata_t {
+ u32 i2c_base;
+ u32 i2c_len;
+ u8 irq_mode;
+};
+
+static struct intel_scu_ipc_pdata_t intel_scu_ipc_lincroft_pdata = {
+ .i2c_base = 0xff12b000,
+ .i2c_len = 0x10,
+ .irq_mode = 0,
+};
+
+/* Penwell and Cloverview */
+static struct intel_scu_ipc_pdata_t intel_scu_ipc_penwell_pdata = {
+ .i2c_base = 0xff12b000,
+ .i2c_len = 0x10,
+ .irq_mode = 1,
+};
+
+static struct intel_scu_ipc_pdata_t intel_scu_ipc_tangier_pdata = {
+ .i2c_base = 0xff00d000,
+ .i2c_len = 0x10,
+ .irq_mode = 0,
+};
+
+static int ipc_probe(struct pci_dev *dev, const struct pci_device_id *id);
+static void ipc_remove(struct pci_dev *pdev);
+
+struct intel_scu_ipc_dev {
+ struct pci_dev *pdev;
+ void __iomem *ipc_base;
+ void __iomem *i2c_base;
+ struct completion cmd_complete;
+ u8 irq_mode;
+};
+
+static struct intel_scu_ipc_dev ipcdev; /* Only one for now */
+
+/*
+ * IPC Read Buffer (Read Only):
+ * 16 byte buffer for receiving data from SCU, if IPC command
+ * processing results in response data
+ */
+#define IPC_READ_BUFFER 0x90
+
+#define IPC_I2C_CNTRL_ADDR 0
+#define I2C_DATA_ADDR 0x04
+
+static DEFINE_MUTEX(ipclock); /* lock used to prevent multiple call to SCU */
+
+/*
+ * Command Register (Write Only):
+ * A write to this register results in an interrupt to the SCU core processor
+ * Format:
+ * |rfu2(8) | size(8) | command id(4) | rfu1(3) | ioc(1) | command(8)|
+ */
+static inline void ipc_command(u32 cmd) /* Send ipc command */
+{
+ if (ipcdev.irq_mode) {
+ reinit_completion(&ipcdev.cmd_complete);
+ writel(cmd | IPC_IOC, ipcdev.ipc_base);
+ }
+ writel(cmd, ipcdev.ipc_base);
+}
+
+/*
+ * IPC Write Buffer (Write Only):
+ * 16-byte buffer for sending data associated with IPC command to
+ * SCU. Size of the data is specified in the IPC_COMMAND_REG register
+ */
+static inline void ipc_data_writel(u32 data, u32 offset) /* Write ipc data */
+{
+ writel(data, ipcdev.ipc_base + 0x80 + offset);
+}
+
+/*
+ * Status Register (Read Only):
+ * Driver will read this register to get the ready/busy status of the IPC
+ * block and error status of the IPC command that was just processed by SCU
+ * Format:
+ * |rfu3(8)|error code(8)|initiator id(8)|cmd id(4)|rfu1(2)|error(1)|busy(1)|
+ */
+static inline u8 ipc_read_status(void)
+{
+ return __raw_readl(ipcdev.ipc_base + 0x04);
+}
+
+static inline u8 ipc_data_readb(u32 offset) /* Read ipc byte data */
+{
+ return readb(ipcdev.ipc_base + IPC_READ_BUFFER + offset);
+}
+
+static inline u32 ipc_data_readl(u32 offset) /* Read ipc u32 data */
+{
+ return readl(ipcdev.ipc_base + IPC_READ_BUFFER + offset);
+}
+
+/* Wait till scu status is busy */
+static inline int busy_loop(void)
+{
+ u32 status = ipc_read_status();
+ u32 loop_count = 100000;
+
+ /* break if scu doesn't reset busy bit after huge retry */
+ while ((status & BIT(0)) && --loop_count) {
+ udelay(1); /* scu processing time is in few u secods */
+ status = ipc_read_status();
+ }
+
+ if (status & BIT(0)) {
+ dev_err(&ipcdev.pdev->dev, "IPC timed out");
+ return -ETIMEDOUT;
+ }
+
+ if (status & BIT(1))
+ return -EIO;
+
+ return 0;
+}
+
+/* Wait till ipc ioc interrupt is received or timeout in 3 HZ */
+static inline int ipc_wait_for_interrupt(void)
+{
+ int status;
+
+ if (!wait_for_completion_timeout(&ipcdev.cmd_complete, 3 * HZ)) {
+ struct device *dev = &ipcdev.pdev->dev;
+ dev_err(dev, "IPC timed out\n");
+ return -ETIMEDOUT;
+ }
+
+ status = ipc_read_status();
+ if (status & BIT(1))
+ return -EIO;
+
+ return 0;
+}
+
+static int intel_scu_ipc_check_status(void)
+{
+ return ipcdev.irq_mode ? ipc_wait_for_interrupt() : busy_loop();
+}
+
+/* Read/Write power control(PMIC in Langwell, MSIC in PenWell) registers */
+static int pwr_reg_rdwr(u16 *addr, u8 *data, u32 count, u32 op, u32 id)
+{
+ int nc;
+ u32 offset = 0;
+ int err;
+ u8 cbuf[IPC_WWBUF_SIZE] = { };
+ u32 *wbuf = (u32 *)&cbuf;
+
+ mutex_lock(&ipclock);
+
+ memset(cbuf, 0, sizeof(cbuf));
+
+ if (ipcdev.pdev == NULL) {
+ mutex_unlock(&ipclock);
+ return -ENODEV;
+ }
+
+ for (nc = 0; nc < count; nc++, offset += 2) {
+ cbuf[offset] = addr[nc];
+ cbuf[offset + 1] = addr[nc] >> 8;
+ }
+
+ if (id == IPC_CMD_PCNTRL_R) {
+ for (nc = 0, offset = 0; nc < count; nc++, offset += 4)
+ ipc_data_writel(wbuf[nc], offset);
+ ipc_command((count * 2) << 16 | id << 12 | 0 << 8 | op);
+ } else if (id == IPC_CMD_PCNTRL_W) {
+ for (nc = 0; nc < count; nc++, offset += 1)
+ cbuf[offset] = data[nc];
+ for (nc = 0, offset = 0; nc < count; nc++, offset += 4)
+ ipc_data_writel(wbuf[nc], offset);
+ ipc_command((count * 3) << 16 | id << 12 | 0 << 8 | op);
+ } else if (id == IPC_CMD_PCNTRL_M) {
+ cbuf[offset] = data[0];
+ cbuf[offset + 1] = data[1];
+ ipc_data_writel(wbuf[0], 0); /* Write wbuff */
+ ipc_command(4 << 16 | id << 12 | 0 << 8 | op);
+ }
+
+ err = intel_scu_ipc_check_status();
+ if (!err && id == IPC_CMD_PCNTRL_R) { /* Read rbuf */
+ /* Workaround: values are read as 0 without memcpy_fromio */
+ memcpy_fromio(cbuf, ipcdev.ipc_base + 0x90, 16);
+ for (nc = 0; nc < count; nc++)
+ data[nc] = ipc_data_readb(nc);
+ }
+ mutex_unlock(&ipclock);
+ return err;
+}
+
+/**
+ * intel_scu_ipc_ioread8 - read a word via the SCU
+ * @addr: register on SCU
+ * @data: return pointer for read byte
+ *
+ * Read a single register. Returns 0 on success or an error code. All
+ * locking between SCU accesses is handled for the caller.
+ *
+ * This function may sleep.
+ */
+int intel_scu_ipc_ioread8(u16 addr, u8 *data)
+{
+ return pwr_reg_rdwr(&addr, data, 1, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_R);
+}
+EXPORT_SYMBOL(intel_scu_ipc_ioread8);
+
+/**
+ * intel_scu_ipc_ioread16 - read a word via the SCU
+ * @addr: register on SCU
+ * @data: return pointer for read word
+ *
+ * Read a register pair. Returns 0 on success or an error code. All
+ * locking between SCU accesses is handled for the caller.
+ *
+ * This function may sleep.
+ */
+int intel_scu_ipc_ioread16(u16 addr, u16 *data)
+{
+ u16 x[2] = {addr, addr + 1};
+ return pwr_reg_rdwr(x, (u8 *)data, 2, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_R);
+}
+EXPORT_SYMBOL(intel_scu_ipc_ioread16);
+
+/**
+ * intel_scu_ipc_ioread32 - read a dword via the SCU
+ * @addr: register on SCU
+ * @data: return pointer for read dword
+ *
+ * Read four registers. Returns 0 on success or an error code. All
+ * locking between SCU accesses is handled for the caller.
+ *
+ * This function may sleep.
+ */
+int intel_scu_ipc_ioread32(u16 addr, u32 *data)
+{
+ u16 x[4] = {addr, addr + 1, addr + 2, addr + 3};
+ return pwr_reg_rdwr(x, (u8 *)data, 4, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_R);
+}
+EXPORT_SYMBOL(intel_scu_ipc_ioread32);
+
+/**
+ * intel_scu_ipc_iowrite8 - write a byte via the SCU
+ * @addr: register on SCU
+ * @data: byte to write
+ *
+ * Write a single register. Returns 0 on success or an error code. All
+ * locking between SCU accesses is handled for the caller.
+ *
+ * This function may sleep.
+ */
+int intel_scu_ipc_iowrite8(u16 addr, u8 data)
+{
+ return pwr_reg_rdwr(&addr, &data, 1, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_W);
+}
+EXPORT_SYMBOL(intel_scu_ipc_iowrite8);
+
+/**
+ * intel_scu_ipc_iowrite16 - write a word via the SCU
+ * @addr: register on SCU
+ * @data: word to write
+ *
+ * Write two registers. Returns 0 on success or an error code. All
+ * locking between SCU accesses is handled for the caller.
+ *
+ * This function may sleep.
+ */
+int intel_scu_ipc_iowrite16(u16 addr, u16 data)
+{
+ u16 x[2] = {addr, addr + 1};
+ return pwr_reg_rdwr(x, (u8 *)&data, 2, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_W);
+}
+EXPORT_SYMBOL(intel_scu_ipc_iowrite16);
+
+/**
+ * intel_scu_ipc_iowrite32 - write a dword via the SCU
+ * @addr: register on SCU
+ * @data: dword to write
+ *
+ * Write four registers. Returns 0 on success or an error code. All
+ * locking between SCU accesses is handled for the caller.
+ *
+ * This function may sleep.
+ */
+int intel_scu_ipc_iowrite32(u16 addr, u32 data)
+{
+ u16 x[4] = {addr, addr + 1, addr + 2, addr + 3};
+ return pwr_reg_rdwr(x, (u8 *)&data, 4, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_W);
+}
+EXPORT_SYMBOL(intel_scu_ipc_iowrite32);
+
+/**
+ * intel_scu_ipc_readvv - read a set of registers
+ * @addr: register list
+ * @data: bytes to return
+ * @len: length of array
+ *
+ * Read registers. Returns 0 on success or an error code. All
+ * locking between SCU accesses is handled for the caller.
+ *
+ * The largest array length permitted by the hardware is 5 items.
+ *
+ * This function may sleep.
+ */
+int intel_scu_ipc_readv(u16 *addr, u8 *data, int len)
+{
+ return pwr_reg_rdwr(addr, data, len, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_R);
+}
+EXPORT_SYMBOL(intel_scu_ipc_readv);
+
+/**
+ * intel_scu_ipc_writev - write a set of registers
+ * @addr: register list
+ * @data: bytes to write
+ * @len: length of array
+ *
+ * Write registers. Returns 0 on success or an error code. All
+ * locking between SCU accesses is handled for the caller.
+ *
+ * The largest array length permitted by the hardware is 5 items.
+ *
+ * This function may sleep.
+ *
+ */
+int intel_scu_ipc_writev(u16 *addr, u8 *data, int len)
+{
+ return pwr_reg_rdwr(addr, data, len, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_W);
+}
+EXPORT_SYMBOL(intel_scu_ipc_writev);
+
+/**
+ * intel_scu_ipc_update_register - r/m/w a register
+ * @addr: register address
+ * @bits: bits to update
+ * @mask: mask of bits to update
+ *
+ * Read-modify-write power control unit register. The first data argument
+ * must be register value and second is mask value
+ * mask is a bitmap that indicates which bits to update.
+ * 0 = masked. Don't modify this bit, 1 = modify this bit.
+ * returns 0 on success or an error code.
+ *
+ * This function may sleep. Locking between SCU accesses is handled
+ * for the caller.
+ */
+int intel_scu_ipc_update_register(u16 addr, u8 bits, u8 mask)
+{
+ u8 data[2] = { bits, mask };
+ return pwr_reg_rdwr(&addr, data, 1, IPCMSG_PCNTRL, IPC_CMD_PCNTRL_M);
+}
+EXPORT_SYMBOL(intel_scu_ipc_update_register);
+
+/**
+ * intel_scu_ipc_simple_command - send a simple command
+ * @cmd: command
+ * @sub: sub type
+ *
+ * Issue a simple command to the SCU. Do not use this interface if
+ * you must then access data as any data values may be overwritten
+ * by another SCU access by the time this function returns.
+ *
+ * This function may sleep. Locking for SCU accesses is handled for
+ * the caller.
+ */
+int intel_scu_ipc_simple_command(int cmd, int sub)
+{
+ int err;
+
+ mutex_lock(&ipclock);
+ if (ipcdev.pdev == NULL) {
+ mutex_unlock(&ipclock);
+ return -ENODEV;
+ }
+ ipc_command(sub << 12 | cmd);
+ err = intel_scu_ipc_check_status();
+ mutex_unlock(&ipclock);
+ return err;
+}
+EXPORT_SYMBOL(intel_scu_ipc_simple_command);
+
+/**
+ * intel_scu_ipc_command - command with data
+ * @cmd: command
+ * @sub: sub type
+ * @in: input data
+ * @inlen: input length in dwords
+ * @out: output data
+ * @outlein: output length in dwords
+ *
+ * Issue a command to the SCU which involves data transfers. Do the
+ * data copies under the lock but leave it for the caller to interpret
+ */
+int intel_scu_ipc_command(int cmd, int sub, u32 *in, int inlen,
+ u32 *out, int outlen)
+{
+ int i, err;
+
+ mutex_lock(&ipclock);
+ if (ipcdev.pdev == NULL) {
+ mutex_unlock(&ipclock);
+ return -ENODEV;
+ }
+
+ for (i = 0; i < inlen; i++)
+ ipc_data_writel(*in++, 4 * i);
+
+ ipc_command((inlen << 16) | (sub << 12) | cmd);
+ err = intel_scu_ipc_check_status();
+
+ if (!err) {
+ for (i = 0; i < outlen; i++)
+ *out++ = ipc_data_readl(4 * i);
+ }
+
+ mutex_unlock(&ipclock);
+ return err;
+}
+EXPORT_SYMBOL(intel_scu_ipc_command);
+
+/* I2C commands */
+#define IPC_I2C_WRITE 1 /* I2C Write command */
+#define IPC_I2C_READ 2 /* I2C Read command */
+
+/**
+ * intel_scu_ipc_i2c_cntrl - I2C read/write operations
+ * @addr: I2C address + command bits
+ * @data: data to read/write
+ *
+ * Perform an an I2C read/write operation via the SCU. All locking is
+ * handled for the caller. This function may sleep.
+ *
+ * Returns an error code or 0 on success.
+ *
+ * This has to be in the IPC driver for the locking.
+ */
+int intel_scu_ipc_i2c_cntrl(u32 addr, u32 *data)
+{
+ u32 cmd = 0;
+
+ mutex_lock(&ipclock);
+ if (ipcdev.pdev == NULL) {
+ mutex_unlock(&ipclock);
+ return -ENODEV;
+ }
+ cmd = (addr >> 24) & 0xFF;
+ if (cmd == IPC_I2C_READ) {
+ writel(addr, ipcdev.i2c_base + IPC_I2C_CNTRL_ADDR);
+ /* Write not getting updated without delay */
+ mdelay(1);
+ *data = readl(ipcdev.i2c_base + I2C_DATA_ADDR);
+ } else if (cmd == IPC_I2C_WRITE) {
+ writel(*data, ipcdev.i2c_base + I2C_DATA_ADDR);
+ mdelay(1);
+ writel(addr, ipcdev.i2c_base + IPC_I2C_CNTRL_ADDR);
+ } else {
+ dev_err(&ipcdev.pdev->dev,
+ "intel_scu_ipc: I2C INVALID_CMD = 0x%x\n", cmd);
+
+ mutex_unlock(&ipclock);
+ return -EIO;
+ }
+ mutex_unlock(&ipclock);
+ return 0;
+}
+EXPORT_SYMBOL(intel_scu_ipc_i2c_cntrl);
+
+/*
+ * Interrupt handler gets called when ioc bit of IPC_COMMAND_REG set to 1
+ * When ioc bit is set to 1, caller api must wait for interrupt handler called
+ * which in turn unlocks the caller api. Currently this is not used
+ *
+ * This is edge triggered so we need take no action to clear anything
+ */
+static irqreturn_t ioc(int irq, void *dev_id)
+{
+ if (ipcdev.irq_mode)
+ complete(&ipcdev.cmd_complete);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ipc_probe - probe an Intel SCU IPC
+ * @dev: the PCI device matching
+ * @id: entry in the match table
+ *
+ * Enable and install an intel SCU IPC. This appears in the PCI space
+ * but uses some hard coded addresses as well.
+ */
+static int ipc_probe(struct pci_dev *dev, const struct pci_device_id *id)
+{
+ int err;
+ struct intel_scu_ipc_pdata_t *pdata;
+ resource_size_t base;
+
+ if (ipcdev.pdev) /* We support only one SCU */
+ return -EBUSY;
+
+ pdata = (struct intel_scu_ipc_pdata_t *)id->driver_data;
+
+ ipcdev.pdev = pci_dev_get(dev);
+ ipcdev.irq_mode = pdata->irq_mode;
+
+ err = pci_enable_device(dev);
+ if (err)
+ return err;
+
+ err = pci_request_regions(dev, "intel_scu_ipc");
+ if (err)
+ return err;
+
+ base = pci_resource_start(dev, 0);
+ if (!base)
+ return -ENOMEM;
+
+ init_completion(&ipcdev.cmd_complete);
+
+ if (request_irq(dev->irq, ioc, 0, "intel_scu_ipc", &ipcdev))
+ return -EBUSY;
+
+ ipcdev.ipc_base = ioremap_nocache(base, pci_resource_len(dev, 0));
+ if (!ipcdev.ipc_base)
+ return -ENOMEM;
+
+ ipcdev.i2c_base = ioremap_nocache(pdata->i2c_base, pdata->i2c_len);
+ if (!ipcdev.i2c_base) {
+ iounmap(ipcdev.ipc_base);
+ return -ENOMEM;
+ }
+
+ intel_scu_devices_create();
+
+ return 0;
+}
+
+/**
+ * ipc_remove - remove a bound IPC device
+ * @pdev: PCI device
+ *
+ * In practice the SCU is not removable but this function is also
+ * called for each device on a module unload or cleanup which is the
+ * path that will get used.
+ *
+ * Free up the mappings and release the PCI resources
+ */
+static void ipc_remove(struct pci_dev *pdev)
+{
+ free_irq(pdev->irq, &ipcdev);
+ pci_release_regions(pdev);
+ pci_dev_put(ipcdev.pdev);
+ iounmap(ipcdev.ipc_base);
+ iounmap(ipcdev.i2c_base);
+ ipcdev.pdev = NULL;
+ intel_scu_devices_destroy();
+}
+
+static const struct pci_device_id pci_ids[] = {
+ {
+ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_LINCROFT),
+ (kernel_ulong_t)&intel_scu_ipc_lincroft_pdata,
+ }, {
+ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_PENWELL),
+ (kernel_ulong_t)&intel_scu_ipc_penwell_pdata,
+ }, {
+ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_CLOVERVIEW),
+ (kernel_ulong_t)&intel_scu_ipc_penwell_pdata,
+ }, {
+ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_TANGIER),
+ (kernel_ulong_t)&intel_scu_ipc_tangier_pdata,
+ }, {
+ 0,
+ }
+};
+MODULE_DEVICE_TABLE(pci, pci_ids);
+
+static struct pci_driver ipc_driver = {
+ .name = "intel_scu_ipc",
+ .id_table = pci_ids,
+ .probe = ipc_probe,
+ .remove = ipc_remove,
+};
+
+static int __init intel_scu_ipc_init(void)
+{
+ int platform; /* Platform type */
+
+ platform = intel_mid_identify_cpu();
+ if (platform == 0)
+ return -ENODEV;
+ return pci_register_driver(&ipc_driver);
+}
+
+static void __exit intel_scu_ipc_exit(void)
+{
+ pci_unregister_driver(&ipc_driver);
+}
+
+MODULE_AUTHOR("Sreedhara DS <sreedhara.ds@intel.com>");
+MODULE_DESCRIPTION("Intel SCU IPC driver");
+MODULE_LICENSE("GPL");
+
+module_init(intel_scu_ipc_init);
+module_exit(intel_scu_ipc_exit);
diff --git a/drivers/platform/x86/intel_scu_ipcutil.c b/drivers/platform/x86/intel_scu_ipcutil.c
new file mode 100644
index 000000000..02bc5a634
--- /dev/null
+++ b/drivers/platform/x86/intel_scu_ipcutil.c
@@ -0,0 +1,121 @@
+/*
+ * intel_scu_ipc.c: Driver for the Intel SCU IPC mechanism
+ *
+ * (C) Copyright 2008-2010 Intel Corporation
+ * Author: Sreedhara DS (sreedhara.ds@intel.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ *
+ * This driver provides ioctl interfaces to call intel scu ipc driver api
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/fcntl.h>
+#include <linux/sched.h>
+#include <linux/uaccess.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <asm/intel_scu_ipc.h>
+
+static int major;
+
+/* ioctl commnds */
+#define INTE_SCU_IPC_REGISTER_READ 0
+#define INTE_SCU_IPC_REGISTER_WRITE 1
+#define INTE_SCU_IPC_REGISTER_UPDATE 2
+
+struct scu_ipc_data {
+ u32 count; /* No. of registers */
+ u16 addr[5]; /* Register addresses */
+ u8 data[5]; /* Register data */
+ u8 mask; /* Valid for read-modify-write */
+};
+
+/**
+ * scu_reg_access - implement register access ioctls
+ * @cmd: command we are doing (read/write/update)
+ * @data: kernel copy of ioctl data
+ *
+ * Allow the user to perform register accesses on the SCU via the
+ * kernel interface
+ */
+
+static int scu_reg_access(u32 cmd, struct scu_ipc_data *data)
+{
+ int count = data->count;
+
+ if (count == 0 || count == 3 || count > 4)
+ return -EINVAL;
+
+ switch (cmd) {
+ case INTE_SCU_IPC_REGISTER_READ:
+ return intel_scu_ipc_readv(data->addr, data->data, count);
+ case INTE_SCU_IPC_REGISTER_WRITE:
+ return intel_scu_ipc_writev(data->addr, data->data, count);
+ case INTE_SCU_IPC_REGISTER_UPDATE:
+ return intel_scu_ipc_update_register(data->addr[0],
+ data->data[0], data->mask);
+ default:
+ return -ENOTTY;
+ }
+}
+
+/**
+ * scu_ipc_ioctl - control ioctls for the SCU
+ * @fp: file handle of the SCU device
+ * @cmd: ioctl coce
+ * @arg: pointer to user passed structure
+ *
+ * Support the I/O and firmware flashing interfaces of the SCU
+ */
+static long scu_ipc_ioctl(struct file *fp, unsigned int cmd,
+ unsigned long arg)
+{
+ int ret;
+ struct scu_ipc_data data;
+ void __user *argp = (void __user *)arg;
+
+ if (!capable(CAP_SYS_RAWIO))
+ return -EPERM;
+
+ if (copy_from_user(&data, argp, sizeof(struct scu_ipc_data)))
+ return -EFAULT;
+ ret = scu_reg_access(cmd, &data);
+ if (ret < 0)
+ return ret;
+ if (copy_to_user(argp, &data, sizeof(struct scu_ipc_data)))
+ return -EFAULT;
+ return 0;
+}
+
+static const struct file_operations scu_ipc_fops = {
+ .unlocked_ioctl = scu_ipc_ioctl,
+};
+
+static int __init ipc_module_init(void)
+{
+ major = register_chrdev(0, "intel_mid_scu", &scu_ipc_fops);
+ if (major < 0)
+ return major;
+
+ return 0;
+}
+
+static void __exit ipc_module_exit(void)
+{
+ unregister_chrdev(major, "intel_mid_scu");
+}
+
+module_init(ipc_module_init);
+module_exit(ipc_module_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Utility driver for intel scu ipc");
+MODULE_AUTHOR("Sreedhara <sreedhara.ds@intel.com>");
diff --git a/drivers/platform/x86/msi-laptop.c b/drivers/platform/x86/msi-laptop.c
new file mode 100644
index 000000000..085987730
--- /dev/null
+++ b/drivers/platform/x86/msi-laptop.c
@@ -0,0 +1,1200 @@
+/*-*-linux-c-*-*/
+
+/*
+ Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
+ */
+
+/*
+ * msi-laptop.c - MSI S270 laptop support. This laptop is sold under
+ * various brands, including "Cytron/TCM/Medion/Tchibo MD96100".
+ *
+ * Driver also supports S271, S420 models.
+ *
+ * This driver exports a few files in /sys/devices/platform/msi-laptop-pf/:
+ *
+ * lcd_level - Screen brightness: contains a single integer in the
+ * range 0..8. (rw)
+ *
+ * auto_brightness - Enable automatic brightness control: contains
+ * either 0 or 1. If set to 1 the hardware adjusts the screen
+ * brightness automatically when the power cord is
+ * plugged/unplugged. (rw)
+ *
+ * wlan - WLAN subsystem enabled: contains either 0 or 1. (ro)
+ *
+ * bluetooth - Bluetooth subsystem enabled: contains either 0 or 1
+ * Please note that this file is constantly 0 if no Bluetooth
+ * hardware is available. (ro)
+ *
+ * In addition to these platform device attributes the driver
+ * registers itself in the Linux backlight control subsystem and is
+ * available to userspace under /sys/class/backlight/msi-laptop-bl/.
+ *
+ * This driver might work on other laptops produced by MSI. If you
+ * want to try it you can pass force=1 as argument to the module which
+ * will force it to load even when the DMI data doesn't identify the
+ * laptop as MSI S270. YMMV.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <linux/backlight.h>
+#include <linux/platform_device.h>
+#include <linux/rfkill.h>
+#include <linux/i8042.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+
+#define MSI_DRIVER_VERSION "0.5"
+
+#define MSI_LCD_LEVEL_MAX 9
+
+#define MSI_EC_COMMAND_WIRELESS 0x10
+#define MSI_EC_COMMAND_LCD_LEVEL 0x11
+
+#define MSI_STANDARD_EC_COMMAND_ADDRESS 0x2e
+#define MSI_STANDARD_EC_BLUETOOTH_MASK (1 << 0)
+#define MSI_STANDARD_EC_WEBCAM_MASK (1 << 1)
+#define MSI_STANDARD_EC_WLAN_MASK (1 << 3)
+#define MSI_STANDARD_EC_3G_MASK (1 << 4)
+
+/* For set SCM load flag to disable BIOS fn key */
+#define MSI_STANDARD_EC_SCM_LOAD_ADDRESS 0x2d
+#define MSI_STANDARD_EC_SCM_LOAD_MASK (1 << 0)
+
+#define MSI_STANDARD_EC_FUNCTIONS_ADDRESS 0xe4
+/* Power LED is orange - Turbo mode */
+#define MSI_STANDARD_EC_TURBO_MASK (1 << 1)
+/* Power LED is green - ECO mode */
+#define MSI_STANDARD_EC_ECO_MASK (1 << 3)
+/* Touchpad is turned on */
+#define MSI_STANDARD_EC_TOUCHPAD_MASK (1 << 4)
+/* If this bit != bit 1, turbo mode can't be toggled */
+#define MSI_STANDARD_EC_TURBO_COOLDOWN_MASK (1 << 7)
+
+#define MSI_STANDARD_EC_FAN_ADDRESS 0x33
+/* If zero, fan rotates at maximal speed */
+#define MSI_STANDARD_EC_AUTOFAN_MASK (1 << 0)
+
+#ifdef CONFIG_PM_SLEEP
+static int msi_laptop_resume(struct device *device);
+#endif
+static SIMPLE_DEV_PM_OPS(msi_laptop_pm, NULL, msi_laptop_resume);
+
+#define MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS 0x2f
+
+static bool force;
+module_param(force, bool, 0);
+MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
+
+static int auto_brightness;
+module_param(auto_brightness, int, 0);
+MODULE_PARM_DESC(auto_brightness, "Enable automatic brightness control (0: disabled; 1: enabled; 2: don't touch)");
+
+static const struct key_entry msi_laptop_keymap[] = {
+ {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} }, /* Touch Pad On */
+ {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },/* Touch Pad On */
+ {KE_END, 0}
+};
+
+static struct input_dev *msi_laptop_input_dev;
+
+static int wlan_s, bluetooth_s, threeg_s;
+static int threeg_exists;
+static struct rfkill *rfk_wlan, *rfk_bluetooth, *rfk_threeg;
+
+/* MSI laptop quirks */
+struct quirk_entry {
+ bool old_ec_model;
+
+ /* Some MSI 3G netbook only have one fn key to control
+ * Wlan/Bluetooth/3G, those netbook will load the SCM (windows app) to
+ * disable the original Wlan/Bluetooth control by BIOS when user press
+ * fn key, then control Wlan/Bluetooth/3G by SCM (software control by
+ * OS). Without SCM, user cann't on/off 3G module on those 3G netbook.
+ * On Linux, msi-laptop driver will do the same thing to disable the
+ * original BIOS control, then might need use HAL or other userland
+ * application to do the software control that simulate with SCM.
+ * e.g. MSI N034 netbook
+ */
+ bool load_scm_model;
+
+ /* Some MSI laptops need delay before reading from EC */
+ bool ec_delay;
+
+ /* Some MSI Wind netbooks (e.g. MSI Wind U100) need loading SCM to get
+ * some features working (e.g. ECO mode), but we cannot change
+ * Wlan/Bluetooth state in software and we can only read its state.
+ */
+ bool ec_read_only;
+};
+
+static struct quirk_entry *quirks;
+
+/* Hardware access */
+
+static int set_lcd_level(int level)
+{
+ u8 buf[2];
+
+ if (level < 0 || level >= MSI_LCD_LEVEL_MAX)
+ return -EINVAL;
+
+ buf[0] = 0x80;
+ buf[1] = (u8) (level*31);
+
+ return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, buf, sizeof(buf),
+ NULL, 0);
+}
+
+static int get_lcd_level(void)
+{
+ u8 wdata = 0, rdata;
+ int result;
+
+ result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
+ &rdata, 1);
+ if (result < 0)
+ return result;
+
+ return (int) rdata / 31;
+}
+
+static int get_auto_brightness(void)
+{
+ u8 wdata = 4, rdata;
+ int result;
+
+ result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
+ &rdata, 1);
+ if (result < 0)
+ return result;
+
+ return !!(rdata & 8);
+}
+
+static int set_auto_brightness(int enable)
+{
+ u8 wdata[2], rdata;
+ int result;
+
+ wdata[0] = 4;
+
+ result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 1,
+ &rdata, 1);
+ if (result < 0)
+ return result;
+
+ wdata[0] = 0x84;
+ wdata[1] = (rdata & 0xF7) | (enable ? 8 : 0);
+
+ return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 2,
+ NULL, 0);
+}
+
+static ssize_t set_device_state(const char *buf, size_t count, u8 mask)
+{
+ int status;
+ u8 wdata = 0, rdata;
+ int result;
+
+ if (sscanf(buf, "%i", &status) != 1 || (status < 0 || status > 1))
+ return -EINVAL;
+
+ if (quirks->ec_read_only)
+ return -EOPNOTSUPP;
+
+ /* read current device state */
+ result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
+ if (result < 0)
+ return result;
+
+ if (!!(rdata & mask) != status) {
+ /* reverse device bit */
+ if (rdata & mask)
+ wdata = rdata & ~mask;
+ else
+ wdata = rdata | mask;
+
+ result = ec_write(MSI_STANDARD_EC_COMMAND_ADDRESS, wdata);
+ if (result < 0)
+ return result;
+ }
+
+ return count;
+}
+
+static int get_wireless_state(int *wlan, int *bluetooth)
+{
+ u8 wdata = 0, rdata;
+ int result;
+
+ result = ec_transaction(MSI_EC_COMMAND_WIRELESS, &wdata, 1, &rdata, 1);
+ if (result < 0)
+ return result;
+
+ if (wlan)
+ *wlan = !!(rdata & 8);
+
+ if (bluetooth)
+ *bluetooth = !!(rdata & 128);
+
+ return 0;
+}
+
+static int get_wireless_state_ec_standard(void)
+{
+ u8 rdata;
+ int result;
+
+ result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
+ if (result < 0)
+ return result;
+
+ wlan_s = !!(rdata & MSI_STANDARD_EC_WLAN_MASK);
+
+ bluetooth_s = !!(rdata & MSI_STANDARD_EC_BLUETOOTH_MASK);
+
+ threeg_s = !!(rdata & MSI_STANDARD_EC_3G_MASK);
+
+ return 0;
+}
+
+static int get_threeg_exists(void)
+{
+ u8 rdata;
+ int result;
+
+ result = ec_read(MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS, &rdata);
+ if (result < 0)
+ return result;
+
+ threeg_exists = !!(rdata & MSI_STANDARD_EC_3G_MASK);
+
+ return 0;
+}
+
+/* Backlight device stuff */
+
+static int bl_get_brightness(struct backlight_device *b)
+{
+ return get_lcd_level();
+}
+
+
+static int bl_update_status(struct backlight_device *b)
+{
+ return set_lcd_level(b->props.brightness);
+}
+
+static const struct backlight_ops msibl_ops = {
+ .get_brightness = bl_get_brightness,
+ .update_status = bl_update_status,
+};
+
+static struct backlight_device *msibl_device;
+
+/* Platform device */
+
+static ssize_t show_wlan(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ int ret, enabled = 0;
+
+ if (quirks->old_ec_model) {
+ ret = get_wireless_state(&enabled, NULL);
+ } else {
+ ret = get_wireless_state_ec_standard();
+ enabled = wlan_s;
+ }
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%i\n", enabled);
+}
+
+static ssize_t store_wlan(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ return set_device_state(buf, count, MSI_STANDARD_EC_WLAN_MASK);
+}
+
+static ssize_t show_bluetooth(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ int ret, enabled = 0;
+
+ if (quirks->old_ec_model) {
+ ret = get_wireless_state(NULL, &enabled);
+ } else {
+ ret = get_wireless_state_ec_standard();
+ enabled = bluetooth_s;
+ }
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%i\n", enabled);
+}
+
+static ssize_t store_bluetooth(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ return set_device_state(buf, count, MSI_STANDARD_EC_BLUETOOTH_MASK);
+}
+
+static ssize_t show_threeg(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ int ret;
+
+ /* old msi ec not support 3G */
+ if (quirks->old_ec_model)
+ return -ENODEV;
+
+ ret = get_wireless_state_ec_standard();
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%i\n", threeg_s);
+}
+
+static ssize_t store_threeg(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ return set_device_state(buf, count, MSI_STANDARD_EC_3G_MASK);
+}
+
+static ssize_t show_lcd_level(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ int ret;
+
+ ret = get_lcd_level();
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%i\n", ret);
+}
+
+static ssize_t store_lcd_level(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+
+ int level, ret;
+
+ if (sscanf(buf, "%i", &level) != 1 ||
+ (level < 0 || level >= MSI_LCD_LEVEL_MAX))
+ return -EINVAL;
+
+ ret = set_lcd_level(level);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t show_auto_brightness(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ int ret;
+
+ ret = get_auto_brightness();
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%i\n", ret);
+}
+
+static ssize_t store_auto_brightness(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+
+ int enable, ret;
+
+ if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
+ return -EINVAL;
+
+ ret = set_auto_brightness(enable);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t show_touchpad(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ u8 rdata;
+ int result;
+
+ result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
+ if (result < 0)
+ return result;
+
+ return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TOUCHPAD_MASK));
+}
+
+static ssize_t show_turbo(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ u8 rdata;
+ int result;
+
+ result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
+ if (result < 0)
+ return result;
+
+ return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TURBO_MASK));
+}
+
+static ssize_t show_eco(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ u8 rdata;
+ int result;
+
+ result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
+ if (result < 0)
+ return result;
+
+ return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_ECO_MASK));
+}
+
+static ssize_t show_turbo_cooldown(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ u8 rdata;
+ int result;
+
+ result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
+ if (result < 0)
+ return result;
+
+ return sprintf(buf, "%i\n", (!!(rdata & MSI_STANDARD_EC_TURBO_MASK)) |
+ (!!(rdata & MSI_STANDARD_EC_TURBO_COOLDOWN_MASK) << 1));
+}
+
+static ssize_t show_auto_fan(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+
+ u8 rdata;
+ int result;
+
+ result = ec_read(MSI_STANDARD_EC_FAN_ADDRESS, &rdata);
+ if (result < 0)
+ return result;
+
+ return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_AUTOFAN_MASK));
+}
+
+static ssize_t store_auto_fan(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+
+ int enable, result;
+
+ if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
+ return -EINVAL;
+
+ result = ec_write(MSI_STANDARD_EC_FAN_ADDRESS, enable);
+ if (result < 0)
+ return result;
+
+ return count;
+}
+
+static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
+static DEVICE_ATTR(auto_brightness, 0644, show_auto_brightness,
+ store_auto_brightness);
+static DEVICE_ATTR(bluetooth, 0444, show_bluetooth, NULL);
+static DEVICE_ATTR(wlan, 0444, show_wlan, NULL);
+static DEVICE_ATTR(threeg, 0444, show_threeg, NULL);
+static DEVICE_ATTR(touchpad, 0444, show_touchpad, NULL);
+static DEVICE_ATTR(turbo_mode, 0444, show_turbo, NULL);
+static DEVICE_ATTR(eco_mode, 0444, show_eco, NULL);
+static DEVICE_ATTR(turbo_cooldown, 0444, show_turbo_cooldown, NULL);
+static DEVICE_ATTR(auto_fan, 0644, show_auto_fan, store_auto_fan);
+
+static struct attribute *msipf_attributes[] = {
+ &dev_attr_bluetooth.attr,
+ &dev_attr_wlan.attr,
+ &dev_attr_touchpad.attr,
+ &dev_attr_turbo_mode.attr,
+ &dev_attr_eco_mode.attr,
+ &dev_attr_turbo_cooldown.attr,
+ &dev_attr_auto_fan.attr,
+ NULL
+};
+
+static struct attribute *msipf_old_attributes[] = {
+ &dev_attr_lcd_level.attr,
+ &dev_attr_auto_brightness.attr,
+ NULL
+};
+
+static struct attribute_group msipf_attribute_group = {
+ .attrs = msipf_attributes
+};
+
+static struct attribute_group msipf_old_attribute_group = {
+ .attrs = msipf_old_attributes
+};
+
+static struct platform_driver msipf_driver = {
+ .driver = {
+ .name = "msi-laptop-pf",
+ .pm = &msi_laptop_pm,
+ },
+};
+
+static struct platform_device *msipf_device;
+
+/* Initialization */
+
+static struct quirk_entry quirk_old_ec_model = {
+ .old_ec_model = true,
+};
+
+static struct quirk_entry quirk_load_scm_model = {
+ .load_scm_model = true,
+ .ec_delay = true,
+};
+
+static struct quirk_entry quirk_load_scm_ro_model = {
+ .load_scm_model = true,
+ .ec_read_only = true,
+};
+
+static int dmi_check_cb(const struct dmi_system_id *dmi)
+{
+ pr_info("Identified laptop model '%s'\n", dmi->ident);
+
+ quirks = dmi->driver_data;
+
+ return 1;
+}
+
+static struct dmi_system_id __initdata msi_dmi_table[] = {
+ {
+ .ident = "MSI S270",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "MICRO-STAR INT'L CO.,LTD"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MS-1013"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
+ DMI_MATCH(DMI_CHASSIS_VENDOR,
+ "MICRO-STAR INT'L CO.,LTD")
+ },
+ .driver_data = &quirk_old_ec_model,
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "MSI S271",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MS-1058"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "0581"),
+ DMI_MATCH(DMI_BOARD_NAME, "MS-1058")
+ },
+ .driver_data = &quirk_old_ec_model,
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "MSI S420",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MS-1412"),
+ DMI_MATCH(DMI_BOARD_VENDOR, "MSI"),
+ DMI_MATCH(DMI_BOARD_NAME, "MS-1412")
+ },
+ .driver_data = &quirk_old_ec_model,
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "Medion MD96100",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "NOTEBOOK"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "SAM2000"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
+ DMI_MATCH(DMI_CHASSIS_VENDOR,
+ "MICRO-STAR INT'L CO.,LTD")
+ },
+ .driver_data = &quirk_old_ec_model,
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "MSI N034",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR,
+ "MICRO-STAR INTERNATIONAL CO., LTD"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MS-N034"),
+ DMI_MATCH(DMI_CHASSIS_VENDOR,
+ "MICRO-STAR INTERNATIONAL CO., LTD")
+ },
+ .driver_data = &quirk_load_scm_model,
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "MSI N051",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR,
+ "MICRO-STAR INTERNATIONAL CO., LTD"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MS-N051"),
+ DMI_MATCH(DMI_CHASSIS_VENDOR,
+ "MICRO-STAR INTERNATIONAL CO., LTD")
+ },
+ .driver_data = &quirk_load_scm_model,
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "MSI N014",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR,
+ "MICRO-STAR INTERNATIONAL CO., LTD"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MS-N014"),
+ },
+ .driver_data = &quirk_load_scm_model,
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "MSI CR620",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR,
+ "Micro-Star International"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "CR620"),
+ },
+ .driver_data = &quirk_load_scm_model,
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "MSI U270",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR,
+ "Micro-Star International Co., Ltd."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "U270 series"),
+ },
+ .driver_data = &quirk_load_scm_model,
+ .callback = dmi_check_cb
+ },
+ {
+ .ident = "MSI U90/U100",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR,
+ "MICRO-STAR INTERNATIONAL CO., LTD"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "U90/U100"),
+ },
+ .driver_data = &quirk_load_scm_ro_model,
+ .callback = dmi_check_cb
+ },
+ { }
+};
+
+static int rfkill_bluetooth_set(void *data, bool blocked)
+{
+ /* Do something with blocked...*/
+ /*
+ * blocked == false is on
+ * blocked == true is off
+ */
+ int result = set_device_state(blocked ? "0" : "1", 0,
+ MSI_STANDARD_EC_BLUETOOTH_MASK);
+
+ return min(result, 0);
+}
+
+static int rfkill_wlan_set(void *data, bool blocked)
+{
+ int result = set_device_state(blocked ? "0" : "1", 0,
+ MSI_STANDARD_EC_WLAN_MASK);
+
+ return min(result, 0);
+}
+
+static int rfkill_threeg_set(void *data, bool blocked)
+{
+ int result = set_device_state(blocked ? "0" : "1", 0,
+ MSI_STANDARD_EC_3G_MASK);
+
+ return min(result, 0);
+}
+
+static const struct rfkill_ops rfkill_bluetooth_ops = {
+ .set_block = rfkill_bluetooth_set
+};
+
+static const struct rfkill_ops rfkill_wlan_ops = {
+ .set_block = rfkill_wlan_set
+};
+
+static const struct rfkill_ops rfkill_threeg_ops = {
+ .set_block = rfkill_threeg_set
+};
+
+static void rfkill_cleanup(void)
+{
+ if (rfk_bluetooth) {
+ rfkill_unregister(rfk_bluetooth);
+ rfkill_destroy(rfk_bluetooth);
+ }
+
+ if (rfk_threeg) {
+ rfkill_unregister(rfk_threeg);
+ rfkill_destroy(rfk_threeg);
+ }
+
+ if (rfk_wlan) {
+ rfkill_unregister(rfk_wlan);
+ rfkill_destroy(rfk_wlan);
+ }
+}
+
+static bool msi_rfkill_set_state(struct rfkill *rfkill, bool blocked)
+{
+ if (quirks->ec_read_only)
+ return rfkill_set_hw_state(rfkill, blocked);
+ else
+ return rfkill_set_sw_state(rfkill, blocked);
+}
+
+static void msi_update_rfkill(struct work_struct *ignored)
+{
+ get_wireless_state_ec_standard();
+
+ if (rfk_wlan)
+ msi_rfkill_set_state(rfk_wlan, !wlan_s);
+ if (rfk_bluetooth)
+ msi_rfkill_set_state(rfk_bluetooth, !bluetooth_s);
+ if (rfk_threeg)
+ msi_rfkill_set_state(rfk_threeg, !threeg_s);
+}
+static DECLARE_DELAYED_WORK(msi_rfkill_dwork, msi_update_rfkill);
+static DECLARE_WORK(msi_rfkill_work, msi_update_rfkill);
+
+static void msi_send_touchpad_key(struct work_struct *ignored)
+{
+ u8 rdata;
+ int result;
+
+ result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
+ if (result < 0)
+ return;
+
+ sparse_keymap_report_event(msi_laptop_input_dev,
+ (rdata & MSI_STANDARD_EC_TOUCHPAD_MASK) ?
+ KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF, 1, true);
+}
+static DECLARE_DELAYED_WORK(msi_touchpad_dwork, msi_send_touchpad_key);
+static DECLARE_WORK(msi_touchpad_work, msi_send_touchpad_key);
+
+static bool msi_laptop_i8042_filter(unsigned char data, unsigned char str,
+ struct serio *port)
+{
+ static bool extended;
+
+ if (str & I8042_STR_AUXDATA)
+ return false;
+
+ /* 0x54 wwan, 0x62 bluetooth, 0x76 wlan, 0xE4 touchpad toggle*/
+ if (unlikely(data == 0xe0)) {
+ extended = true;
+ return false;
+ } else if (unlikely(extended)) {
+ extended = false;
+ switch (data) {
+ case 0xE4:
+ if (quirks->ec_delay) {
+ schedule_delayed_work(&msi_touchpad_dwork,
+ round_jiffies_relative(0.5 * HZ));
+ } else
+ schedule_work(&msi_touchpad_work);
+ break;
+ case 0x54:
+ case 0x62:
+ case 0x76:
+ if (quirks->ec_delay) {
+ schedule_delayed_work(&msi_rfkill_dwork,
+ round_jiffies_relative(0.5 * HZ));
+ } else
+ schedule_work(&msi_rfkill_work);
+ break;
+ }
+ }
+
+ return false;
+}
+
+static void msi_init_rfkill(struct work_struct *ignored)
+{
+ if (rfk_wlan) {
+ rfkill_set_sw_state(rfk_wlan, !wlan_s);
+ rfkill_wlan_set(NULL, !wlan_s);
+ }
+ if (rfk_bluetooth) {
+ rfkill_set_sw_state(rfk_bluetooth, !bluetooth_s);
+ rfkill_bluetooth_set(NULL, !bluetooth_s);
+ }
+ if (rfk_threeg) {
+ rfkill_set_sw_state(rfk_threeg, !threeg_s);
+ rfkill_threeg_set(NULL, !threeg_s);
+ }
+}
+static DECLARE_DELAYED_WORK(msi_rfkill_init, msi_init_rfkill);
+
+static int rfkill_init(struct platform_device *sdev)
+{
+ /* add rfkill */
+ int retval;
+
+ /* keep the hardware wireless state */
+ get_wireless_state_ec_standard();
+
+ rfk_bluetooth = rfkill_alloc("msi-bluetooth", &sdev->dev,
+ RFKILL_TYPE_BLUETOOTH,
+ &rfkill_bluetooth_ops, NULL);
+ if (!rfk_bluetooth) {
+ retval = -ENOMEM;
+ goto err_bluetooth;
+ }
+ retval = rfkill_register(rfk_bluetooth);
+ if (retval)
+ goto err_bluetooth;
+
+ rfk_wlan = rfkill_alloc("msi-wlan", &sdev->dev, RFKILL_TYPE_WLAN,
+ &rfkill_wlan_ops, NULL);
+ if (!rfk_wlan) {
+ retval = -ENOMEM;
+ goto err_wlan;
+ }
+ retval = rfkill_register(rfk_wlan);
+ if (retval)
+ goto err_wlan;
+
+ if (threeg_exists) {
+ rfk_threeg = rfkill_alloc("msi-threeg", &sdev->dev,
+ RFKILL_TYPE_WWAN, &rfkill_threeg_ops, NULL);
+ if (!rfk_threeg) {
+ retval = -ENOMEM;
+ goto err_threeg;
+ }
+ retval = rfkill_register(rfk_threeg);
+ if (retval)
+ goto err_threeg;
+ }
+
+ /* schedule to run rfkill state initial */
+ if (quirks->ec_delay) {
+ schedule_delayed_work(&msi_rfkill_init,
+ round_jiffies_relative(1 * HZ));
+ } else
+ schedule_work(&msi_rfkill_work);
+
+ return 0;
+
+err_threeg:
+ rfkill_destroy(rfk_threeg);
+ if (rfk_wlan)
+ rfkill_unregister(rfk_wlan);
+err_wlan:
+ rfkill_destroy(rfk_wlan);
+ if (rfk_bluetooth)
+ rfkill_unregister(rfk_bluetooth);
+err_bluetooth:
+ rfkill_destroy(rfk_bluetooth);
+
+ return retval;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int msi_laptop_resume(struct device *device)
+{
+ u8 data;
+ int result;
+
+ if (!quirks->load_scm_model)
+ return 0;
+
+ /* set load SCM to disable hardware control by fn key */
+ result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
+ if (result < 0)
+ return result;
+
+ result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
+ data | MSI_STANDARD_EC_SCM_LOAD_MASK);
+ if (result < 0)
+ return result;
+
+ return 0;
+}
+#endif
+
+static int __init msi_laptop_input_setup(void)
+{
+ int err;
+
+ msi_laptop_input_dev = input_allocate_device();
+ if (!msi_laptop_input_dev)
+ return -ENOMEM;
+
+ msi_laptop_input_dev->name = "MSI Laptop hotkeys";
+ msi_laptop_input_dev->phys = "msi-laptop/input0";
+ msi_laptop_input_dev->id.bustype = BUS_HOST;
+
+ err = sparse_keymap_setup(msi_laptop_input_dev,
+ msi_laptop_keymap, NULL);
+ if (err)
+ goto err_free_dev;
+
+ err = input_register_device(msi_laptop_input_dev);
+ if (err)
+ goto err_free_keymap;
+
+ return 0;
+
+err_free_keymap:
+ sparse_keymap_free(msi_laptop_input_dev);
+err_free_dev:
+ input_free_device(msi_laptop_input_dev);
+ return err;
+}
+
+static void msi_laptop_input_destroy(void)
+{
+ sparse_keymap_free(msi_laptop_input_dev);
+ input_unregister_device(msi_laptop_input_dev);
+}
+
+static int __init load_scm_model_init(struct platform_device *sdev)
+{
+ u8 data;
+ int result;
+
+ if (!quirks->ec_read_only) {
+ /* allow userland write sysfs file */
+ dev_attr_bluetooth.store = store_bluetooth;
+ dev_attr_wlan.store = store_wlan;
+ dev_attr_threeg.store = store_threeg;
+ dev_attr_bluetooth.attr.mode |= S_IWUSR;
+ dev_attr_wlan.attr.mode |= S_IWUSR;
+ dev_attr_threeg.attr.mode |= S_IWUSR;
+ }
+
+ /* disable hardware control by fn key */
+ result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
+ if (result < 0)
+ return result;
+
+ result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
+ data | MSI_STANDARD_EC_SCM_LOAD_MASK);
+ if (result < 0)
+ return result;
+
+ /* initial rfkill */
+ result = rfkill_init(sdev);
+ if (result < 0)
+ goto fail_rfkill;
+
+ /* setup input device */
+ result = msi_laptop_input_setup();
+ if (result)
+ goto fail_input;
+
+ result = i8042_install_filter(msi_laptop_i8042_filter);
+ if (result) {
+ pr_err("Unable to install key filter\n");
+ goto fail_filter;
+ }
+
+ return 0;
+
+fail_filter:
+ msi_laptop_input_destroy();
+
+fail_input:
+ rfkill_cleanup();
+
+fail_rfkill:
+
+ return result;
+
+}
+
+static int __init msi_init(void)
+{
+ int ret;
+
+ if (acpi_disabled)
+ return -ENODEV;
+
+ dmi_check_system(msi_dmi_table);
+ if (!quirks)
+ /* quirks may be NULL if no match in DMI table */
+ quirks = &quirk_load_scm_model;
+ if (force)
+ quirks = &quirk_old_ec_model;
+
+ if (!quirks->old_ec_model)
+ get_threeg_exists();
+
+ if (auto_brightness < 0 || auto_brightness > 2)
+ return -EINVAL;
+
+ /* Register backlight stuff */
+
+ if (!quirks->old_ec_model || acpi_video_backlight_support()) {
+ pr_info("Brightness ignored, must be controlled by ACPI video driver\n");
+ } else {
+ struct backlight_properties props;
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = MSI_LCD_LEVEL_MAX - 1;
+ msibl_device = backlight_device_register("msi-laptop-bl", NULL,
+ NULL, &msibl_ops,
+ &props);
+ if (IS_ERR(msibl_device))
+ return PTR_ERR(msibl_device);
+ }
+
+ ret = platform_driver_register(&msipf_driver);
+ if (ret)
+ goto fail_backlight;
+
+ /* Register platform stuff */
+
+ msipf_device = platform_device_alloc("msi-laptop-pf", -1);
+ if (!msipf_device) {
+ ret = -ENOMEM;
+ goto fail_platform_driver;
+ }
+
+ ret = platform_device_add(msipf_device);
+ if (ret)
+ goto fail_device_add;
+
+ if (quirks->load_scm_model && (load_scm_model_init(msipf_device) < 0)) {
+ ret = -EINVAL;
+ goto fail_scm_model_init;
+ }
+
+ ret = sysfs_create_group(&msipf_device->dev.kobj,
+ &msipf_attribute_group);
+ if (ret)
+ goto fail_create_group;
+
+ if (!quirks->old_ec_model) {
+ if (threeg_exists)
+ ret = device_create_file(&msipf_device->dev,
+ &dev_attr_threeg);
+ if (ret)
+ goto fail_create_attr;
+ } else {
+ ret = sysfs_create_group(&msipf_device->dev.kobj,
+ &msipf_old_attribute_group);
+ if (ret)
+ goto fail_create_attr;
+
+ /* Disable automatic brightness control by default because
+ * this module was probably loaded to do brightness control in
+ * software. */
+
+ if (auto_brightness != 2)
+ set_auto_brightness(auto_brightness);
+ }
+
+ pr_info("driver " MSI_DRIVER_VERSION " successfully loaded\n");
+
+ return 0;
+
+fail_create_attr:
+ sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
+fail_create_group:
+ if (quirks->load_scm_model) {
+ i8042_remove_filter(msi_laptop_i8042_filter);
+ cancel_delayed_work_sync(&msi_rfkill_dwork);
+ cancel_work_sync(&msi_rfkill_work);
+ rfkill_cleanup();
+ }
+fail_scm_model_init:
+ platform_device_del(msipf_device);
+fail_device_add:
+ platform_device_put(msipf_device);
+fail_platform_driver:
+ platform_driver_unregister(&msipf_driver);
+fail_backlight:
+ backlight_device_unregister(msibl_device);
+
+ return ret;
+}
+
+static void __exit msi_cleanup(void)
+{
+ if (quirks->load_scm_model) {
+ i8042_remove_filter(msi_laptop_i8042_filter);
+ msi_laptop_input_destroy();
+ cancel_delayed_work_sync(&msi_rfkill_dwork);
+ cancel_work_sync(&msi_rfkill_work);
+ rfkill_cleanup();
+ }
+
+ sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
+ if (!quirks->old_ec_model && threeg_exists)
+ device_remove_file(&msipf_device->dev, &dev_attr_threeg);
+ platform_device_unregister(msipf_device);
+ platform_driver_unregister(&msipf_driver);
+ backlight_device_unregister(msibl_device);
+
+ if (quirks->old_ec_model) {
+ /* Enable automatic brightness control again */
+ if (auto_brightness != 2)
+ set_auto_brightness(1);
+ }
+
+ pr_info("driver unloaded\n");
+}
+
+module_init(msi_init);
+module_exit(msi_cleanup);
+
+MODULE_AUTHOR("Lennart Poettering");
+MODULE_DESCRIPTION("MSI Laptop Support");
+MODULE_VERSION(MSI_DRIVER_VERSION);
+MODULE_LICENSE("GPL");
+
+MODULE_ALIAS("dmi:*:svnMICRO-STARINT'LCO.,LTD:pnMS-1013:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
+MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1058:pvr0581:rvnMSI:rnMS-1058:*:ct10:*");
+MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1412:*:rvnMSI:rnMS-1412:*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
+MODULE_ALIAS("dmi:*:svnNOTEBOOK:pnSAM2000:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
+MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N034:*");
+MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N051:*");
+MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N014:*");
+MODULE_ALIAS("dmi:*:svnMicro-StarInternational*:pnCR620:*");
+MODULE_ALIAS("dmi:*:svnMicro-StarInternational*:pnU270series:*");
+MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnU90/U100:*");
diff --git a/drivers/platform/x86/msi-wmi.c b/drivers/platform/x86/msi-wmi.c
new file mode 100644
index 000000000..6d2bac0c4
--- /dev/null
+++ b/drivers/platform/x86/msi-wmi.c
@@ -0,0 +1,361 @@
+/*
+ * MSI WMI hotkeys
+ *
+ * Copyright (C) 2009 Novell <trenn@suse.de>
+ *
+ * Most stuff taken over from hp-wmi
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/acpi.h>
+#include <linux/backlight.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+
+MODULE_AUTHOR("Thomas Renninger <trenn@suse.de>");
+MODULE_DESCRIPTION("MSI laptop WMI hotkeys driver");
+MODULE_LICENSE("GPL");
+
+#define DRV_NAME "msi-wmi"
+
+#define MSIWMI_BIOS_GUID "551A1F84-FBDD-4125-91DB-3EA8F44F1D45"
+#define MSIWMI_MSI_EVENT_GUID "B6F3EEF2-3D2F-49DC-9DE3-85BCE18C62F2"
+#define MSIWMI_WIND_EVENT_GUID "5B3CC38A-40D9-7245-8AE6-1145B751BE3F"
+
+MODULE_ALIAS("wmi:" MSIWMI_BIOS_GUID);
+MODULE_ALIAS("wmi:" MSIWMI_MSI_EVENT_GUID);
+MODULE_ALIAS("wmi:" MSIWMI_WIND_EVENT_GUID);
+
+enum msi_scancodes {
+ /* Generic MSI keys (not present on MSI Wind) */
+ MSI_KEY_BRIGHTNESSUP = 0xD0,
+ MSI_KEY_BRIGHTNESSDOWN,
+ MSI_KEY_VOLUMEUP,
+ MSI_KEY_VOLUMEDOWN,
+ MSI_KEY_MUTE,
+ /* MSI Wind keys */
+ WIND_KEY_TOUCHPAD = 0x08, /* Fn+F3 touchpad toggle */
+ WIND_KEY_BLUETOOTH = 0x56, /* Fn+F11 Bluetooth toggle */
+ WIND_KEY_CAMERA, /* Fn+F6 webcam toggle */
+ WIND_KEY_WLAN = 0x5f, /* Fn+F11 Wi-Fi toggle */
+ WIND_KEY_TURBO, /* Fn+F10 turbo mode toggle */
+ WIND_KEY_ECO = 0x69, /* Fn+F10 ECO mode toggle */
+};
+static struct key_entry msi_wmi_keymap[] = {
+ { KE_KEY, MSI_KEY_BRIGHTNESSUP, {KEY_BRIGHTNESSUP} },
+ { KE_KEY, MSI_KEY_BRIGHTNESSDOWN, {KEY_BRIGHTNESSDOWN} },
+ { KE_KEY, MSI_KEY_VOLUMEUP, {KEY_VOLUMEUP} },
+ { KE_KEY, MSI_KEY_VOLUMEDOWN, {KEY_VOLUMEDOWN} },
+ { KE_KEY, MSI_KEY_MUTE, {KEY_MUTE} },
+
+ /* These keys work without WMI. Ignore them to avoid double keycodes */
+ { KE_IGNORE, WIND_KEY_TOUCHPAD, {KEY_TOUCHPAD_TOGGLE} },
+ { KE_IGNORE, WIND_KEY_BLUETOOTH, {KEY_BLUETOOTH} },
+ { KE_IGNORE, WIND_KEY_CAMERA, {KEY_CAMERA} },
+ { KE_IGNORE, WIND_KEY_WLAN, {KEY_WLAN} },
+
+ /* These are unknown WMI events found on MSI Wind */
+ { KE_IGNORE, 0x00 },
+ { KE_IGNORE, 0x62 },
+ { KE_IGNORE, 0x63 },
+
+ /* These are MSI Wind keys that should be handled via WMI */
+ { KE_KEY, WIND_KEY_TURBO, {KEY_PROG1} },
+ { KE_KEY, WIND_KEY_ECO, {KEY_PROG2} },
+
+ { KE_END, 0 }
+};
+
+static ktime_t last_pressed;
+
+static const struct {
+ const char *guid;
+ bool quirk_last_pressed;
+} *event_wmi, event_wmis[] = {
+ { MSIWMI_MSI_EVENT_GUID, true },
+ { MSIWMI_WIND_EVENT_GUID, false },
+};
+
+static struct backlight_device *backlight;
+
+static int backlight_map[] = { 0x00, 0x33, 0x66, 0x99, 0xCC, 0xFF };
+
+static struct input_dev *msi_wmi_input_dev;
+
+static int msi_wmi_query_block(int instance, int *ret)
+{
+ acpi_status status;
+ union acpi_object *obj;
+
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+
+ status = wmi_query_block(MSIWMI_BIOS_GUID, instance, &output);
+
+ obj = output.pointer;
+
+ if (!obj || obj->type != ACPI_TYPE_INTEGER) {
+ if (obj) {
+ pr_err("query block returned object "
+ "type: %d - buffer length:%d\n", obj->type,
+ obj->type == ACPI_TYPE_BUFFER ?
+ obj->buffer.length : 0);
+ }
+ kfree(obj);
+ return -EINVAL;
+ }
+ *ret = obj->integer.value;
+ kfree(obj);
+ return 0;
+}
+
+static int msi_wmi_set_block(int instance, int value)
+{
+ acpi_status status;
+
+ struct acpi_buffer input = { sizeof(int), &value };
+
+ pr_debug("Going to set block of instance: %d - value: %d\n",
+ instance, value);
+
+ status = wmi_set_block(MSIWMI_BIOS_GUID, instance, &input);
+
+ return ACPI_SUCCESS(status) ? 0 : 1;
+}
+
+static int bl_get(struct backlight_device *bd)
+{
+ int level, err, ret;
+
+ /* Instance 1 is "get backlight", cmp with DSDT */
+ err = msi_wmi_query_block(1, &ret);
+ if (err) {
+ pr_err("Could not query backlight: %d\n", err);
+ return -EINVAL;
+ }
+ pr_debug("Get: Query block returned: %d\n", ret);
+ for (level = 0; level < ARRAY_SIZE(backlight_map); level++) {
+ if (backlight_map[level] == ret) {
+ pr_debug("Current backlight level: 0x%X - index: %d\n",
+ backlight_map[level], level);
+ break;
+ }
+ }
+ if (level == ARRAY_SIZE(backlight_map)) {
+ pr_err("get: Invalid brightness value: 0x%X\n", ret);
+ return -EINVAL;
+ }
+ return level;
+}
+
+static int bl_set_status(struct backlight_device *bd)
+{
+ int bright = bd->props.brightness;
+ if (bright >= ARRAY_SIZE(backlight_map) || bright < 0)
+ return -EINVAL;
+
+ /* Instance 0 is "set backlight" */
+ return msi_wmi_set_block(0, backlight_map[bright]);
+}
+
+static const struct backlight_ops msi_backlight_ops = {
+ .get_brightness = bl_get,
+ .update_status = bl_set_status,
+};
+
+static void msi_wmi_notify(u32 value, void *context)
+{
+ struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
+ static struct key_entry *key;
+ union acpi_object *obj;
+ acpi_status status;
+
+ status = wmi_get_event_data(value, &response);
+ if (status != AE_OK) {
+ pr_info("bad event status 0x%x\n", status);
+ return;
+ }
+
+ obj = (union acpi_object *)response.pointer;
+
+ if (obj && obj->type == ACPI_TYPE_INTEGER) {
+ int eventcode = obj->integer.value;
+ pr_debug("Eventcode: 0x%x\n", eventcode);
+ key = sparse_keymap_entry_from_scancode(msi_wmi_input_dev,
+ eventcode);
+ if (!key) {
+ pr_info("Unknown key pressed - %x\n", eventcode);
+ goto msi_wmi_notify_exit;
+ }
+
+ if (event_wmi->quirk_last_pressed) {
+ ktime_t cur = ktime_get_real();
+ ktime_t diff = ktime_sub(cur, last_pressed);
+ /* Ignore event if any event happened in a 50 ms
+ timeframe -> Key press may result in 10-20 GPEs */
+ if (ktime_to_us(diff) < 1000 * 50) {
+ pr_debug("Suppressed key event 0x%X - "
+ "Last press was %lld us ago\n",
+ key->code, ktime_to_us(diff));
+ goto msi_wmi_notify_exit;
+ }
+ last_pressed = cur;
+ }
+
+ if (key->type == KE_KEY &&
+ /* Brightness is served via acpi video driver */
+ (backlight ||
+ (key->code != MSI_KEY_BRIGHTNESSUP &&
+ key->code != MSI_KEY_BRIGHTNESSDOWN))) {
+ pr_debug("Send key: 0x%X - Input layer keycode: %d\n",
+ key->code, key->keycode);
+ sparse_keymap_report_entry(msi_wmi_input_dev, key, 1,
+ true);
+ }
+ } else
+ pr_info("Unknown event received\n");
+
+msi_wmi_notify_exit:
+ kfree(response.pointer);
+}
+
+static int __init msi_wmi_backlight_setup(void)
+{
+ int err;
+ struct backlight_properties props;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = ARRAY_SIZE(backlight_map) - 1;
+ backlight = backlight_device_register(DRV_NAME, NULL, NULL,
+ &msi_backlight_ops,
+ &props);
+ if (IS_ERR(backlight))
+ return PTR_ERR(backlight);
+
+ err = bl_get(NULL);
+ if (err < 0) {
+ backlight_device_unregister(backlight);
+ return err;
+ }
+
+ backlight->props.brightness = err;
+
+ return 0;
+}
+
+static int __init msi_wmi_input_setup(void)
+{
+ int err;
+
+ msi_wmi_input_dev = input_allocate_device();
+ if (!msi_wmi_input_dev)
+ return -ENOMEM;
+
+ msi_wmi_input_dev->name = "MSI WMI hotkeys";
+ msi_wmi_input_dev->phys = "wmi/input0";
+ msi_wmi_input_dev->id.bustype = BUS_HOST;
+
+ err = sparse_keymap_setup(msi_wmi_input_dev, msi_wmi_keymap, NULL);
+ if (err)
+ goto err_free_dev;
+
+ err = input_register_device(msi_wmi_input_dev);
+
+ if (err)
+ goto err_free_keymap;
+
+ last_pressed = ktime_set(0, 0);
+
+ return 0;
+
+err_free_keymap:
+ sparse_keymap_free(msi_wmi_input_dev);
+err_free_dev:
+ input_free_device(msi_wmi_input_dev);
+ return err;
+}
+
+static int __init msi_wmi_init(void)
+{
+ int err;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(event_wmis); i++) {
+ if (!wmi_has_guid(event_wmis[i].guid))
+ continue;
+
+ err = msi_wmi_input_setup();
+ if (err) {
+ pr_err("Unable to setup input device\n");
+ return err;
+ }
+
+ err = wmi_install_notify_handler(event_wmis[i].guid,
+ msi_wmi_notify, NULL);
+ if (ACPI_FAILURE(err)) {
+ pr_err("Unable to setup WMI notify handler\n");
+ goto err_free_input;
+ }
+
+ pr_debug("Event handler installed\n");
+ event_wmi = &event_wmis[i];
+ break;
+ }
+
+ if (wmi_has_guid(MSIWMI_BIOS_GUID) && !acpi_video_backlight_support()) {
+ err = msi_wmi_backlight_setup();
+ if (err) {
+ pr_err("Unable to setup backlight device\n");
+ goto err_uninstall_handler;
+ }
+ pr_debug("Backlight device created\n");
+ }
+
+ if (!event_wmi && !backlight) {
+ pr_err("This machine doesn't have neither MSI-hotkeys nor backlight through WMI\n");
+ return -ENODEV;
+ }
+
+ return 0;
+
+err_uninstall_handler:
+ if (event_wmi)
+ wmi_remove_notify_handler(event_wmi->guid);
+err_free_input:
+ if (event_wmi) {
+ sparse_keymap_free(msi_wmi_input_dev);
+ input_unregister_device(msi_wmi_input_dev);
+ }
+ return err;
+}
+
+static void __exit msi_wmi_exit(void)
+{
+ if (event_wmi) {
+ wmi_remove_notify_handler(event_wmi->guid);
+ sparse_keymap_free(msi_wmi_input_dev);
+ input_unregister_device(msi_wmi_input_dev);
+ }
+ backlight_device_unregister(backlight);
+}
+
+module_init(msi_wmi_init);
+module_exit(msi_wmi_exit);
diff --git a/drivers/platform/x86/mxm-wmi.c b/drivers/platform/x86/mxm-wmi.c
new file mode 100644
index 000000000..f4bad8305
--- /dev/null
+++ b/drivers/platform/x86/mxm-wmi.c
@@ -0,0 +1,111 @@
+/*
+ * MXM WMI driver
+ *
+ * Copyright(C) 2010 Red Hat.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mxm-wmi.h>
+#include <linux/acpi.h>
+
+MODULE_AUTHOR("Dave Airlie");
+MODULE_DESCRIPTION("MXM WMI Driver");
+MODULE_LICENSE("GPL");
+
+#define MXM_WMMX_GUID "F6CB5C3C-9CAE-4EBD-B577-931EA32A2CC0"
+
+MODULE_ALIAS("wmi:"MXM_WMMX_GUID);
+
+#define MXM_WMMX_FUNC_MXDS 0x5344584D /* "MXDS" */
+#define MXM_WMMX_FUNC_MXMX 0x53445344 /* "MXMX" */
+
+struct mxds_args {
+ u32 func;
+ u32 args;
+ u32 xarg;
+};
+
+int mxm_wmi_call_mxds(int adapter)
+{
+ struct mxds_args args = {
+ .func = MXM_WMMX_FUNC_MXDS,
+ .args = 0,
+ .xarg = 1,
+ };
+ struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ acpi_status status;
+
+ printk("calling mux switch %d\n", adapter);
+
+ status = wmi_evaluate_method(MXM_WMMX_GUID, 0x1, adapter, &input,
+ &output);
+
+ if (ACPI_FAILURE(status))
+ return status;
+
+ printk("mux switched %d\n", status);
+ return 0;
+
+}
+EXPORT_SYMBOL_GPL(mxm_wmi_call_mxds);
+
+int mxm_wmi_call_mxmx(int adapter)
+{
+ struct mxds_args args = {
+ .func = MXM_WMMX_FUNC_MXMX,
+ .args = 0,
+ .xarg = 1,
+ };
+ struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ acpi_status status;
+
+ printk("calling mux switch %d\n", adapter);
+
+ status = wmi_evaluate_method(MXM_WMMX_GUID, 0x1, adapter, &input,
+ &output);
+
+ if (ACPI_FAILURE(status))
+ return status;
+
+ printk("mux mutex set switched %d\n", status);
+ return 0;
+
+}
+EXPORT_SYMBOL_GPL(mxm_wmi_call_mxmx);
+
+bool mxm_wmi_supported(void)
+{
+ bool guid_valid;
+ guid_valid = wmi_has_guid(MXM_WMMX_GUID);
+ return guid_valid;
+}
+EXPORT_SYMBOL_GPL(mxm_wmi_supported);
+
+static int __init mxm_wmi_init(void)
+{
+ return 0;
+}
+
+static void __exit mxm_wmi_exit(void)
+{
+}
+
+module_init(mxm_wmi_init);
+module_exit(mxm_wmi_exit);
diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c
new file mode 100644
index 000000000..3f8709722
--- /dev/null
+++ b/drivers/platform/x86/panasonic-laptop.c
@@ -0,0 +1,671 @@
+/*
+ * Panasonic HotKey and LCD brightness control driver
+ * (C) 2004 Hiroshi Miura <miura@da-cha.org>
+ * (C) 2004 NTT DATA Intellilink Co. http://www.intellilink.co.jp/
+ * (C) YOKOTA Hiroshi <yokota (at) netlab. is. tsukuba. ac. jp>
+ * (C) 2004 David Bronaugh <dbronaugh>
+ * (C) 2006-2008 Harald Welte <laforge@gnumonks.org>
+ *
+ * derived from toshiba_acpi.c, Copyright (C) 2002-2004 John Belmonte
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * publicshed by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ *---------------------------------------------------------------------------
+ *
+ * ChangeLog:
+ * Sep.23, 2008 Harald Welte <laforge@gnumonks.org>
+ * -v0.95 rename driver from drivers/acpi/pcc_acpi.c to
+ * drivers/misc/panasonic-laptop.c
+ *
+ * Jul.04, 2008 Harald Welte <laforge@gnumonks.org>
+ * -v0.94 replace /proc interface with device attributes
+ * support {set,get}keycode on th input device
+ *
+ * Jun.27, 2008 Harald Welte <laforge@gnumonks.org>
+ * -v0.92 merge with 2.6.26-rc6 input API changes
+ * remove broken <= 2.6.15 kernel support
+ * resolve all compiler warnings
+ * various coding style fixes (checkpatch.pl)
+ * add support for backlight api
+ * major code restructuring
+ *
+ * Dac.28, 2007 Harald Welte <laforge@gnumonks.org>
+ * -v0.91 merge with 2.6.24-rc6 ACPI changes
+ *
+ * Nov.04, 2006 Hiroshi Miura <miura@da-cha.org>
+ * -v0.9 remove warning about section reference.
+ * remove acpi_os_free
+ * add /proc/acpi/pcc/brightness interface for HAL access
+ * merge dbronaugh's enhancement
+ * Aug.17, 2004 David Bronaugh (dbronaugh)
+ * - Added screen brightness setting interface
+ * Thanks to FreeBSD crew (acpi_panasonic.c)
+ * for the ideas I needed to accomplish it
+ *
+ * May.29, 2006 Hiroshi Miura <miura@da-cha.org>
+ * -v0.8.4 follow to change keyinput structure
+ * thanks Fabian Yamaguchi <fabs@cs.tu-berlin.de>,
+ * Jacob Bower <jacob.bower@ic.ac.uk> and
+ * Hiroshi Yokota for providing solutions.
+ *
+ * Oct.02, 2004 Hiroshi Miura <miura@da-cha.org>
+ * -v0.8.2 merge code of YOKOTA Hiroshi
+ * <yokota@netlab.is.tsukuba.ac.jp>.
+ * Add sticky key mode interface.
+ * Refactoring acpi_pcc_generate_keyinput().
+ *
+ * Sep.15, 2004 Hiroshi Miura <miura@da-cha.org>
+ * -v0.8 Generate key input event on input subsystem.
+ * This is based on yet another driver written by
+ * Ryuta Nakanishi.
+ *
+ * Sep.10, 2004 Hiroshi Miura <miura@da-cha.org>
+ * -v0.7 Change proc interface functions using seq_file
+ * facility as same as other ACPI drivers.
+ *
+ * Aug.28, 2004 Hiroshi Miura <miura@da-cha.org>
+ * -v0.6.4 Fix a silly error with status checking
+ *
+ * Aug.25, 2004 Hiroshi Miura <miura@da-cha.org>
+ * -v0.6.3 replace read_acpi_int by standard function
+ * acpi_evaluate_integer
+ * some clean up and make smart copyright notice.
+ * fix return value of pcc_acpi_get_key()
+ * fix checking return value of acpi_bus_register_driver()
+ *
+ * Aug.22, 2004 David Bronaugh <dbronaugh@linuxboxen.org>
+ * -v0.6.2 Add check on ACPI data (num_sifr)
+ * Coding style cleanups, better error messages/handling
+ * Fixed an off-by-one error in memory allocation
+ *
+ * Aug.21, 2004 David Bronaugh <dbronaugh@linuxboxen.org>
+ * -v0.6.1 Fix a silly error with status checking
+ *
+ * Aug.20, 2004 David Bronaugh <dbronaugh@linuxboxen.org>
+ * - v0.6 Correct brightness controls to reflect reality
+ * based on information gleaned by Hiroshi Miura
+ * and discussions with Hiroshi Miura
+ *
+ * Aug.10, 2004 Hiroshi Miura <miura@da-cha.org>
+ * - v0.5 support LCD brightness control
+ * based on the disclosed information by MEI.
+ *
+ * Jul.25, 2004 Hiroshi Miura <miura@da-cha.org>
+ * - v0.4 first post version
+ * add function to retrive SIFR
+ *
+ * Jul.24, 2004 Hiroshi Miura <miura@da-cha.org>
+ * - v0.3 get proper status of hotkey
+ *
+ * Jul.22, 2004 Hiroshi Miura <miura@da-cha.org>
+ * - v0.2 add HotKey handler
+ *
+ * Jul.17, 2004 Hiroshi Miura <miura@da-cha.org>
+ * - v0.1 start from toshiba_acpi driver written by John Belmonte
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/backlight.h>
+#include <linux/ctype.h>
+#include <linux/seq_file.h>
+#include <linux/uaccess.h>
+#include <linux/slab.h>
+#include <linux/acpi.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+
+#ifndef ACPI_HOTKEY_COMPONENT
+#define ACPI_HOTKEY_COMPONENT 0x10000000
+#endif
+
+#define _COMPONENT ACPI_HOTKEY_COMPONENT
+
+MODULE_AUTHOR("Hiroshi Miura, David Bronaugh and Harald Welte");
+MODULE_DESCRIPTION("ACPI HotKey driver for Panasonic Let's Note laptops");
+MODULE_LICENSE("GPL");
+
+#define LOGPREFIX "pcc_acpi: "
+
+/* Define ACPI PATHs */
+/* Lets note hotkeys */
+#define METHOD_HKEY_QUERY "HINF"
+#define METHOD_HKEY_SQTY "SQTY"
+#define METHOD_HKEY_SINF "SINF"
+#define METHOD_HKEY_SSET "SSET"
+#define HKEY_NOTIFY 0x80
+
+#define ACPI_PCC_DRIVER_NAME "Panasonic Laptop Support"
+#define ACPI_PCC_DEVICE_NAME "Hotkey"
+#define ACPI_PCC_CLASS "pcc"
+
+#define ACPI_PCC_INPUT_PHYS "panasonic/hkey0"
+
+/* LCD_TYPEs: 0 = Normal, 1 = Semi-transparent
+ ENV_STATEs: Normal temp=0x01, High temp=0x81, N/A=0x00
+*/
+enum SINF_BITS { SINF_NUM_BATTERIES = 0,
+ SINF_LCD_TYPE,
+ SINF_AC_MAX_BRIGHT,
+ SINF_AC_MIN_BRIGHT,
+ SINF_AC_CUR_BRIGHT,
+ SINF_DC_MAX_BRIGHT,
+ SINF_DC_MIN_BRIGHT,
+ SINF_DC_CUR_BRIGHT,
+ SINF_MUTE,
+ SINF_RESERVED,
+ SINF_ENV_STATE,
+ SINF_STICKY_KEY = 0x80,
+ };
+/* R1 handles SINF_AC_CUR_BRIGHT as SINF_CUR_BRIGHT, doesn't know AC state */
+
+static int acpi_pcc_hotkey_add(struct acpi_device *device);
+static int acpi_pcc_hotkey_remove(struct acpi_device *device);
+static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event);
+
+static const struct acpi_device_id pcc_device_ids[] = {
+ { "MAT0012", 0},
+ { "MAT0013", 0},
+ { "MAT0018", 0},
+ { "MAT0019", 0},
+ { "", 0},
+};
+MODULE_DEVICE_TABLE(acpi, pcc_device_ids);
+
+#ifdef CONFIG_PM_SLEEP
+static int acpi_pcc_hotkey_resume(struct device *dev);
+#endif
+static SIMPLE_DEV_PM_OPS(acpi_pcc_hotkey_pm, NULL, acpi_pcc_hotkey_resume);
+
+static struct acpi_driver acpi_pcc_driver = {
+ .name = ACPI_PCC_DRIVER_NAME,
+ .class = ACPI_PCC_CLASS,
+ .ids = pcc_device_ids,
+ .ops = {
+ .add = acpi_pcc_hotkey_add,
+ .remove = acpi_pcc_hotkey_remove,
+ .notify = acpi_pcc_hotkey_notify,
+ },
+ .drv.pm = &acpi_pcc_hotkey_pm,
+};
+
+static const struct key_entry panasonic_keymap[] = {
+ { KE_KEY, 0, { KEY_RESERVED } },
+ { KE_KEY, 1, { KEY_BRIGHTNESSDOWN } },
+ { KE_KEY, 2, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, 3, { KEY_DISPLAYTOGGLE } },
+ { KE_KEY, 4, { KEY_MUTE } },
+ { KE_KEY, 5, { KEY_VOLUMEDOWN } },
+ { KE_KEY, 6, { KEY_VOLUMEUP } },
+ { KE_KEY, 7, { KEY_SLEEP } },
+ { KE_KEY, 8, { KEY_PROG1 } }, /* Change CPU boost */
+ { KE_KEY, 9, { KEY_BATTERY } },
+ { KE_KEY, 10, { KEY_SUSPEND } },
+ { KE_END, 0 }
+};
+
+struct pcc_acpi {
+ acpi_handle handle;
+ unsigned long num_sifr;
+ int sticky_mode;
+ u32 *sinf;
+ struct acpi_device *device;
+ struct input_dev *input_dev;
+ struct backlight_device *backlight;
+};
+
+struct pcc_keyinput {
+ struct acpi_hotkey *hotkey;
+};
+
+/* method access functions */
+static int acpi_pcc_write_sset(struct pcc_acpi *pcc, int func, int val)
+{
+ union acpi_object in_objs[] = {
+ { .integer.type = ACPI_TYPE_INTEGER,
+ .integer.value = func, },
+ { .integer.type = ACPI_TYPE_INTEGER,
+ .integer.value = val, },
+ };
+ struct acpi_object_list params = {
+ .count = ARRAY_SIZE(in_objs),
+ .pointer = in_objs,
+ };
+ acpi_status status = AE_OK;
+
+ status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SSET,
+ &params, NULL);
+
+ return (status == AE_OK) ? 0 : -EIO;
+}
+
+static inline int acpi_pcc_get_sqty(struct acpi_device *device)
+{
+ unsigned long long s;
+ acpi_status status;
+
+ status = acpi_evaluate_integer(device->handle, METHOD_HKEY_SQTY,
+ NULL, &s);
+ if (ACPI_SUCCESS(status))
+ return s;
+ else {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "evaluation error HKEY.SQTY\n"));
+ return -EINVAL;
+ }
+}
+
+static int acpi_pcc_retrieve_biosdata(struct pcc_acpi *pcc)
+{
+ acpi_status status;
+ struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+ union acpi_object *hkey = NULL;
+ int i;
+
+ status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SINF, NULL,
+ &buffer);
+ if (ACPI_FAILURE(status)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "evaluation error HKEY.SINF\n"));
+ return 0;
+ }
+
+ hkey = buffer.pointer;
+ if (!hkey || (hkey->type != ACPI_TYPE_PACKAGE)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid HKEY.SINF\n"));
+ status = AE_ERROR;
+ goto end;
+ }
+
+ if (pcc->num_sifr < hkey->package.count) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "SQTY reports bad SINF length\n"));
+ status = AE_ERROR;
+ goto end;
+ }
+
+ for (i = 0; i < hkey->package.count; i++) {
+ union acpi_object *element = &(hkey->package.elements[i]);
+ if (likely(element->type == ACPI_TYPE_INTEGER)) {
+ pcc->sinf[i] = element->integer.value;
+ } else
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Invalid HKEY.SINF data\n"));
+ }
+ pcc->sinf[hkey->package.count] = -1;
+
+end:
+ kfree(buffer.pointer);
+ return status == AE_OK;
+}
+
+/* backlight API interface functions */
+
+/* This driver currently treats AC and DC brightness identical,
+ * since we don't need to invent an interface to the core ACPI
+ * logic to receive events in case a power supply is plugged in
+ * or removed */
+
+static int bl_get(struct backlight_device *bd)
+{
+ struct pcc_acpi *pcc = bl_get_data(bd);
+
+ if (!acpi_pcc_retrieve_biosdata(pcc))
+ return -EIO;
+
+ return pcc->sinf[SINF_AC_CUR_BRIGHT];
+}
+
+static int bl_set_status(struct backlight_device *bd)
+{
+ struct pcc_acpi *pcc = bl_get_data(bd);
+ int bright = bd->props.brightness;
+ int rc;
+
+ if (!acpi_pcc_retrieve_biosdata(pcc))
+ return -EIO;
+
+ if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT])
+ bright = pcc->sinf[SINF_AC_MIN_BRIGHT];
+
+ if (bright < pcc->sinf[SINF_DC_MIN_BRIGHT])
+ bright = pcc->sinf[SINF_DC_MIN_BRIGHT];
+
+ if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT] ||
+ bright > pcc->sinf[SINF_AC_MAX_BRIGHT])
+ return -EINVAL;
+
+ rc = acpi_pcc_write_sset(pcc, SINF_AC_CUR_BRIGHT, bright);
+ if (rc < 0)
+ return rc;
+
+ return acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, bright);
+}
+
+static const struct backlight_ops pcc_backlight_ops = {
+ .get_brightness = bl_get,
+ .update_status = bl_set_status,
+};
+
+
+/* sysfs user interface functions */
+
+static ssize_t show_numbatt(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct acpi_device *acpi = to_acpi_device(dev);
+ struct pcc_acpi *pcc = acpi_driver_data(acpi);
+
+ if (!acpi_pcc_retrieve_biosdata(pcc))
+ return -EIO;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_NUM_BATTERIES]);
+}
+
+static ssize_t show_lcdtype(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct acpi_device *acpi = to_acpi_device(dev);
+ struct pcc_acpi *pcc = acpi_driver_data(acpi);
+
+ if (!acpi_pcc_retrieve_biosdata(pcc))
+ return -EIO;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_LCD_TYPE]);
+}
+
+static ssize_t show_mute(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct acpi_device *acpi = to_acpi_device(dev);
+ struct pcc_acpi *pcc = acpi_driver_data(acpi);
+
+ if (!acpi_pcc_retrieve_biosdata(pcc))
+ return -EIO;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_MUTE]);
+}
+
+static ssize_t show_sticky(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct acpi_device *acpi = to_acpi_device(dev);
+ struct pcc_acpi *pcc = acpi_driver_data(acpi);
+
+ if (!acpi_pcc_retrieve_biosdata(pcc))
+ return -EIO;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_STICKY_KEY]);
+}
+
+static ssize_t set_sticky(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct acpi_device *acpi = to_acpi_device(dev);
+ struct pcc_acpi *pcc = acpi_driver_data(acpi);
+ int val;
+
+ if (count && sscanf(buf, "%i", &val) == 1 &&
+ (val == 0 || val == 1)) {
+ acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, val);
+ pcc->sticky_mode = val;
+ }
+
+ return count;
+}
+
+static DEVICE_ATTR(numbatt, S_IRUGO, show_numbatt, NULL);
+static DEVICE_ATTR(lcdtype, S_IRUGO, show_lcdtype, NULL);
+static DEVICE_ATTR(mute, S_IRUGO, show_mute, NULL);
+static DEVICE_ATTR(sticky_key, S_IRUGO | S_IWUSR, show_sticky, set_sticky);
+
+static struct attribute *pcc_sysfs_entries[] = {
+ &dev_attr_numbatt.attr,
+ &dev_attr_lcdtype.attr,
+ &dev_attr_mute.attr,
+ &dev_attr_sticky_key.attr,
+ NULL,
+};
+
+static struct attribute_group pcc_attr_group = {
+ .name = NULL, /* put in device directory */
+ .attrs = pcc_sysfs_entries,
+};
+
+
+/* hotkey input device driver */
+
+static int sleep_keydown_seen;
+static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc)
+{
+ struct input_dev *hotk_input_dev = pcc->input_dev;
+ int rc;
+ unsigned long long result;
+
+ rc = acpi_evaluate_integer(pcc->handle, METHOD_HKEY_QUERY,
+ NULL, &result);
+ if (!ACPI_SUCCESS(rc)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "error getting hotkey status\n"));
+ return;
+ }
+
+ /* hack: some firmware sends no key down for sleep / hibernate */
+ if ((result & 0xf) == 0x7 || (result & 0xf) == 0xa) {
+ if (result & 0x80)
+ sleep_keydown_seen = 1;
+ if (!sleep_keydown_seen)
+ sparse_keymap_report_event(hotk_input_dev,
+ result & 0xf, 0x80, false);
+ }
+
+ if (!sparse_keymap_report_event(hotk_input_dev,
+ result & 0xf, result & 0x80, false))
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Unknown hotkey event: %d\n", result));
+}
+
+static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event)
+{
+ struct pcc_acpi *pcc = acpi_driver_data(device);
+
+ switch (event) {
+ case HKEY_NOTIFY:
+ acpi_pcc_generate_keyinput(pcc);
+ break;
+ default:
+ /* nothing to do */
+ break;
+ }
+}
+
+static int acpi_pcc_init_input(struct pcc_acpi *pcc)
+{
+ struct input_dev *input_dev;
+ int error;
+
+ input_dev = input_allocate_device();
+ if (!input_dev)
+ return -ENOMEM;
+
+ input_dev->name = ACPI_PCC_DRIVER_NAME;
+ input_dev->phys = ACPI_PCC_INPUT_PHYS;
+ input_dev->id.bustype = BUS_HOST;
+ input_dev->id.vendor = 0x0001;
+ input_dev->id.product = 0x0001;
+ input_dev->id.version = 0x0100;
+
+ error = sparse_keymap_setup(input_dev, panasonic_keymap, NULL);
+ if (error) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Unable to setup input device keymap\n"));
+ goto err_free_dev;
+ }
+
+ error = input_register_device(input_dev);
+ if (error) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Unable to register input device\n"));
+ goto err_free_keymap;
+ }
+
+ pcc->input_dev = input_dev;
+ return 0;
+
+ err_free_keymap:
+ sparse_keymap_free(input_dev);
+ err_free_dev:
+ input_free_device(input_dev);
+ return error;
+}
+
+static void acpi_pcc_destroy_input(struct pcc_acpi *pcc)
+{
+ sparse_keymap_free(pcc->input_dev);
+ input_unregister_device(pcc->input_dev);
+ /*
+ * No need to input_free_device() since core input API refcounts
+ * and free()s the device.
+ */
+}
+
+/* kernel module interface */
+
+#ifdef CONFIG_PM_SLEEP
+static int acpi_pcc_hotkey_resume(struct device *dev)
+{
+ struct pcc_acpi *pcc;
+
+ if (!dev)
+ return -EINVAL;
+
+ pcc = acpi_driver_data(to_acpi_device(dev));
+ if (!pcc)
+ return -EINVAL;
+
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Sticky mode restore: %d\n",
+ pcc->sticky_mode));
+
+ return acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, pcc->sticky_mode);
+}
+#endif
+
+static int acpi_pcc_hotkey_add(struct acpi_device *device)
+{
+ struct backlight_properties props;
+ struct pcc_acpi *pcc;
+ int num_sifr, result;
+
+ if (!device)
+ return -EINVAL;
+
+ num_sifr = acpi_pcc_get_sqty(device);
+
+ if (num_sifr < 0 || num_sifr > 255) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "num_sifr out of range"));
+ return -ENODEV;
+ }
+
+ pcc = kzalloc(sizeof(struct pcc_acpi), GFP_KERNEL);
+ if (!pcc) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Couldn't allocate mem for pcc"));
+ return -ENOMEM;
+ }
+
+ pcc->sinf = kzalloc(sizeof(u32) * (num_sifr + 1), GFP_KERNEL);
+ if (!pcc->sinf) {
+ result = -ENOMEM;
+ goto out_hotkey;
+ }
+
+ pcc->device = device;
+ pcc->handle = device->handle;
+ pcc->num_sifr = num_sifr;
+ device->driver_data = pcc;
+ strcpy(acpi_device_name(device), ACPI_PCC_DEVICE_NAME);
+ strcpy(acpi_device_class(device), ACPI_PCC_CLASS);
+
+ result = acpi_pcc_init_input(pcc);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Error installing keyinput handler\n"));
+ goto out_sinf;
+ }
+
+ if (!acpi_pcc_retrieve_biosdata(pcc)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Couldn't retrieve BIOS data\n"));
+ result = -EIO;
+ goto out_input;
+ }
+ /* initialize backlight */
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = pcc->sinf[SINF_AC_MAX_BRIGHT];
+ pcc->backlight = backlight_device_register("panasonic", NULL, pcc,
+ &pcc_backlight_ops, &props);
+ if (IS_ERR(pcc->backlight)) {
+ result = PTR_ERR(pcc->backlight);
+ goto out_input;
+ }
+
+ /* read the initial brightness setting from the hardware */
+ pcc->backlight->props.brightness = pcc->sinf[SINF_AC_CUR_BRIGHT];
+
+ /* read the initial sticky key mode from the hardware */
+ pcc->sticky_mode = pcc->sinf[SINF_STICKY_KEY];
+
+ /* add sysfs attributes */
+ result = sysfs_create_group(&device->dev.kobj, &pcc_attr_group);
+ if (result)
+ goto out_backlight;
+
+ return 0;
+
+out_backlight:
+ backlight_device_unregister(pcc->backlight);
+out_input:
+ acpi_pcc_destroy_input(pcc);
+out_sinf:
+ kfree(pcc->sinf);
+out_hotkey:
+ kfree(pcc);
+
+ return result;
+}
+
+static int acpi_pcc_hotkey_remove(struct acpi_device *device)
+{
+ struct pcc_acpi *pcc = acpi_driver_data(device);
+
+ if (!device || !pcc)
+ return -EINVAL;
+
+ sysfs_remove_group(&device->dev.kobj, &pcc_attr_group);
+
+ backlight_device_unregister(pcc->backlight);
+
+ acpi_pcc_destroy_input(pcc);
+
+ kfree(pcc->sinf);
+ kfree(pcc);
+
+ return 0;
+}
+
+module_acpi_driver(acpi_pcc_driver);
diff --git a/drivers/platform/x86/pvpanic.c b/drivers/platform/x86/pvpanic.c
new file mode 100644
index 000000000..073a90a63
--- /dev/null
+++ b/drivers/platform/x86/pvpanic.c
@@ -0,0 +1,124 @@
+/*
+ * pvpanic.c - pvpanic Device Support
+ *
+ * Copyright (C) 2013 Fujitsu.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/acpi.h>
+
+MODULE_AUTHOR("Hu Tao <hutao@cn.fujitsu.com>");
+MODULE_DESCRIPTION("pvpanic device driver");
+MODULE_LICENSE("GPL");
+
+static int pvpanic_add(struct acpi_device *device);
+static int pvpanic_remove(struct acpi_device *device);
+
+static const struct acpi_device_id pvpanic_device_ids[] = {
+ { "QEMU0001", 0 },
+ { "", 0 },
+};
+MODULE_DEVICE_TABLE(acpi, pvpanic_device_ids);
+
+#define PVPANIC_PANICKED (1 << 0)
+
+static u16 port;
+
+static struct acpi_driver pvpanic_driver = {
+ .name = "pvpanic",
+ .class = "QEMU",
+ .ids = pvpanic_device_ids,
+ .ops = {
+ .add = pvpanic_add,
+ .remove = pvpanic_remove,
+ },
+ .owner = THIS_MODULE,
+};
+
+static void
+pvpanic_send_event(unsigned int event)
+{
+ outb(event, port);
+}
+
+static int
+pvpanic_panic_notify(struct notifier_block *nb, unsigned long code,
+ void *unused)
+{
+ pvpanic_send_event(PVPANIC_PANICKED);
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block pvpanic_panic_nb = {
+ .notifier_call = pvpanic_panic_notify,
+ .priority = 1, /* let this called before broken drm_fb_helper */
+};
+
+
+static acpi_status
+pvpanic_walk_resources(struct acpi_resource *res, void *context)
+{
+ switch (res->type) {
+ case ACPI_RESOURCE_TYPE_END_TAG:
+ return AE_OK;
+
+ case ACPI_RESOURCE_TYPE_IO:
+ port = res->data.io.minimum;
+ return AE_OK;
+
+ default:
+ return AE_ERROR;
+ }
+}
+
+static int pvpanic_add(struct acpi_device *device)
+{
+ acpi_status status;
+ u64 ret;
+
+ status = acpi_evaluate_integer(device->handle, "_STA", NULL,
+ &ret);
+
+ if (ACPI_FAILURE(status) || (ret & 0x0B) != 0x0B)
+ return -ENODEV;
+
+ acpi_walk_resources(device->handle, METHOD_NAME__CRS,
+ pvpanic_walk_resources, NULL);
+
+ if (!port)
+ return -ENODEV;
+
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &pvpanic_panic_nb);
+
+ return 0;
+}
+
+static int pvpanic_remove(struct acpi_device *device)
+{
+
+ atomic_notifier_chain_unregister(&panic_notifier_list,
+ &pvpanic_panic_nb);
+ return 0;
+}
+
+module_acpi_driver(pvpanic_driver);
diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c
new file mode 100644
index 000000000..9e701b225
--- /dev/null
+++ b/drivers/platform/x86/samsung-laptop.c
@@ -0,0 +1,1834 @@
+/*
+ * Samsung Laptop driver
+ *
+ * Copyright (C) 2009,2011 Greg Kroah-Hartman (gregkh@suse.de)
+ * Copyright (C) 2009,2011 Novell Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/backlight.h>
+#include <linux/leds.h>
+#include <linux/fb.h>
+#include <linux/dmi.h>
+#include <linux/platform_device.h>
+#include <linux/rfkill.h>
+#include <linux/acpi.h>
+#include <linux/seq_file.h>
+#include <linux/debugfs.h>
+#include <linux/ctype.h>
+#include <linux/efi.h>
+#include <linux/suspend.h>
+#include <acpi/video.h>
+
+/*
+ * This driver is needed because a number of Samsung laptops do not hook
+ * their control settings through ACPI. So we have to poke around in the
+ * BIOS to do things like brightness values, and "special" key controls.
+ */
+
+/*
+ * We have 0 - 8 as valid brightness levels. The specs say that level 0 should
+ * be reserved by the BIOS (which really doesn't make much sense), we tell
+ * userspace that the value is 0 - 7 and then just tell the hardware 1 - 8
+ */
+#define MAX_BRIGHT 0x07
+
+
+#define SABI_IFACE_MAIN 0x00
+#define SABI_IFACE_SUB 0x02
+#define SABI_IFACE_COMPLETE 0x04
+#define SABI_IFACE_DATA 0x05
+
+#define WL_STATUS_WLAN 0x0
+#define WL_STATUS_BT 0x2
+
+/* Structure get/set data using sabi */
+struct sabi_data {
+ union {
+ struct {
+ u32 d0;
+ u32 d1;
+ u16 d2;
+ u8 d3;
+ };
+ u8 data[11];
+ };
+};
+
+struct sabi_header_offsets {
+ u8 port;
+ u8 re_mem;
+ u8 iface_func;
+ u8 en_mem;
+ u8 data_offset;
+ u8 data_segment;
+};
+
+struct sabi_commands {
+ /*
+ * Brightness is 0 - 8, as described above.
+ * Value 0 is for the BIOS to use
+ */
+ u16 get_brightness;
+ u16 set_brightness;
+
+ /*
+ * first byte:
+ * 0x00 - wireless is off
+ * 0x01 - wireless is on
+ * second byte:
+ * 0x02 - 3G is off
+ * 0x03 - 3G is on
+ * TODO, verify 3G is correct, that doesn't seem right...
+ */
+ u16 get_wireless_button;
+ u16 set_wireless_button;
+
+ /* 0 is off, 1 is on */
+ u16 get_backlight;
+ u16 set_backlight;
+
+ /*
+ * 0x80 or 0x00 - no action
+ * 0x81 - recovery key pressed
+ */
+ u16 get_recovery_mode;
+ u16 set_recovery_mode;
+
+ /*
+ * on seclinux: 0 is low, 1 is high,
+ * on swsmi: 0 is normal, 1 is silent, 2 is turbo
+ */
+ u16 get_performance_level;
+ u16 set_performance_level;
+
+ /* 0x80 is off, 0x81 is on */
+ u16 get_battery_life_extender;
+ u16 set_battery_life_extender;
+
+ /* 0x80 is off, 0x81 is on */
+ u16 get_usb_charge;
+ u16 set_usb_charge;
+
+ /* the first byte is for bluetooth and the third one is for wlan */
+ u16 get_wireless_status;
+ u16 set_wireless_status;
+
+ /* 0x80 is off, 0x81 is on */
+ u16 get_lid_handling;
+ u16 set_lid_handling;
+
+ /* 0x81 to read, (0x82 | level << 8) to set, 0xaabb to enable */
+ u16 kbd_backlight;
+
+ /*
+ * Tell the BIOS that Linux is running on this machine.
+ * 81 is on, 80 is off
+ */
+ u16 set_linux;
+};
+
+struct sabi_performance_level {
+ const char *name;
+ u16 value;
+};
+
+struct sabi_config {
+ int sabi_version;
+ const char *test_string;
+ u16 main_function;
+ const struct sabi_header_offsets header_offsets;
+ const struct sabi_commands commands;
+ const struct sabi_performance_level performance_levels[4];
+ u8 min_brightness;
+ u8 max_brightness;
+};
+
+static const struct sabi_config sabi_configs[] = {
+ {
+ /* I don't know if it is really 2, but it it is
+ * less than 3 anyway */
+ .sabi_version = 2,
+
+ .test_string = "SECLINUX",
+
+ .main_function = 0x4c49,
+
+ .header_offsets = {
+ .port = 0x00,
+ .re_mem = 0x02,
+ .iface_func = 0x03,
+ .en_mem = 0x04,
+ .data_offset = 0x05,
+ .data_segment = 0x07,
+ },
+
+ .commands = {
+ .get_brightness = 0x00,
+ .set_brightness = 0x01,
+
+ .get_wireless_button = 0x02,
+ .set_wireless_button = 0x03,
+
+ .get_backlight = 0x04,
+ .set_backlight = 0x05,
+
+ .get_recovery_mode = 0x06,
+ .set_recovery_mode = 0x07,
+
+ .get_performance_level = 0x08,
+ .set_performance_level = 0x09,
+
+ .get_battery_life_extender = 0xFFFF,
+ .set_battery_life_extender = 0xFFFF,
+
+ .get_usb_charge = 0xFFFF,
+ .set_usb_charge = 0xFFFF,
+
+ .get_wireless_status = 0xFFFF,
+ .set_wireless_status = 0xFFFF,
+
+ .get_lid_handling = 0xFFFF,
+ .set_lid_handling = 0xFFFF,
+
+ .kbd_backlight = 0xFFFF,
+
+ .set_linux = 0x0a,
+ },
+
+ .performance_levels = {
+ {
+ .name = "silent",
+ .value = 0,
+ },
+ {
+ .name = "normal",
+ .value = 1,
+ },
+ { },
+ },
+ .min_brightness = 1,
+ .max_brightness = 8,
+ },
+ {
+ .sabi_version = 3,
+
+ .test_string = "SwSmi@",
+
+ .main_function = 0x5843,
+
+ .header_offsets = {
+ .port = 0x00,
+ .re_mem = 0x04,
+ .iface_func = 0x02,
+ .en_mem = 0x03,
+ .data_offset = 0x05,
+ .data_segment = 0x07,
+ },
+
+ .commands = {
+ .get_brightness = 0x10,
+ .set_brightness = 0x11,
+
+ .get_wireless_button = 0x12,
+ .set_wireless_button = 0x13,
+
+ .get_backlight = 0x2d,
+ .set_backlight = 0x2e,
+
+ .get_recovery_mode = 0xff,
+ .set_recovery_mode = 0xff,
+
+ .get_performance_level = 0x31,
+ .set_performance_level = 0x32,
+
+ .get_battery_life_extender = 0x65,
+ .set_battery_life_extender = 0x66,
+
+ .get_usb_charge = 0x67,
+ .set_usb_charge = 0x68,
+
+ .get_wireless_status = 0x69,
+ .set_wireless_status = 0x6a,
+
+ .get_lid_handling = 0x6d,
+ .set_lid_handling = 0x6e,
+
+ .kbd_backlight = 0x78,
+
+ .set_linux = 0xff,
+ },
+
+ .performance_levels = {
+ {
+ .name = "normal",
+ .value = 0,
+ },
+ {
+ .name = "silent",
+ .value = 1,
+ },
+ {
+ .name = "overclock",
+ .value = 2,
+ },
+ { },
+ },
+ .min_brightness = 0,
+ .max_brightness = 8,
+ },
+ { },
+};
+
+/*
+ * samsung-laptop/ - debugfs root directory
+ * f0000_segment - dump f0000 segment
+ * command - current command
+ * data - current data
+ * d0, d1, d2, d3 - data fields
+ * call - call SABI using command and data
+ *
+ * This allow to call arbitrary sabi commands wihout
+ * modifying the driver at all.
+ * For example, setting the keyboard backlight brightness to 5
+ *
+ * echo 0x78 > command
+ * echo 0x0582 > d0
+ * echo 0 > d1
+ * echo 0 > d2
+ * echo 0 > d3
+ * cat call
+ */
+
+struct samsung_laptop_debug {
+ struct dentry *root;
+ struct sabi_data data;
+ u16 command;
+
+ struct debugfs_blob_wrapper f0000_wrapper;
+ struct debugfs_blob_wrapper data_wrapper;
+ struct debugfs_blob_wrapper sdiag_wrapper;
+};
+
+struct samsung_laptop;
+
+struct samsung_rfkill {
+ struct samsung_laptop *samsung;
+ struct rfkill *rfkill;
+ enum rfkill_type type;
+};
+
+struct samsung_laptop {
+ const struct sabi_config *config;
+
+ void __iomem *sabi;
+ void __iomem *sabi_iface;
+ void __iomem *f0000_segment;
+
+ struct mutex sabi_mutex;
+
+ struct platform_device *platform_device;
+ struct backlight_device *backlight_device;
+
+ struct samsung_rfkill wlan;
+ struct samsung_rfkill bluetooth;
+
+ struct led_classdev kbd_led;
+ int kbd_led_wk;
+ struct workqueue_struct *led_workqueue;
+ struct work_struct kbd_led_work;
+
+ struct samsung_laptop_debug debug;
+ struct samsung_quirks *quirks;
+
+ struct notifier_block pm_nb;
+
+ bool handle_backlight;
+ bool has_stepping_quirk;
+
+ char sdiag[64];
+};
+
+struct samsung_quirks {
+ bool broken_acpi_video;
+ bool four_kbd_backlight_levels;
+ bool enable_kbd_backlight;
+ bool use_native_backlight;
+ bool lid_handling;
+};
+
+static struct samsung_quirks samsung_unknown = {};
+
+static struct samsung_quirks samsung_broken_acpi_video = {
+ .broken_acpi_video = true,
+};
+
+static struct samsung_quirks samsung_use_native_backlight = {
+ .use_native_backlight = true,
+};
+
+static struct samsung_quirks samsung_np740u3e = {
+ .four_kbd_backlight_levels = true,
+ .enable_kbd_backlight = true,
+};
+
+static struct samsung_quirks samsung_lid_handling = {
+ .lid_handling = true,
+};
+
+static bool force;
+module_param(force, bool, 0);
+MODULE_PARM_DESC(force,
+ "Disable the DMI check and forces the driver to be loaded");
+
+static bool debug;
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
+
+static int sabi_command(struct samsung_laptop *samsung, u16 command,
+ struct sabi_data *in,
+ struct sabi_data *out)
+{
+ const struct sabi_config *config = samsung->config;
+ int ret = 0;
+ u16 port = readw(samsung->sabi + config->header_offsets.port);
+ u8 complete, iface_data;
+
+ mutex_lock(&samsung->sabi_mutex);
+
+ if (debug) {
+ if (in)
+ pr_info("SABI command:0x%04x "
+ "data:{0x%08x, 0x%08x, 0x%04x, 0x%02x}",
+ command, in->d0, in->d1, in->d2, in->d3);
+ else
+ pr_info("SABI command:0x%04x", command);
+ }
+
+ /* enable memory to be able to write to it */
+ outb(readb(samsung->sabi + config->header_offsets.en_mem), port);
+
+ /* write out the command */
+ writew(config->main_function, samsung->sabi_iface + SABI_IFACE_MAIN);
+ writew(command, samsung->sabi_iface + SABI_IFACE_SUB);
+ writeb(0, samsung->sabi_iface + SABI_IFACE_COMPLETE);
+ if (in) {
+ writel(in->d0, samsung->sabi_iface + SABI_IFACE_DATA);
+ writel(in->d1, samsung->sabi_iface + SABI_IFACE_DATA + 4);
+ writew(in->d2, samsung->sabi_iface + SABI_IFACE_DATA + 8);
+ writeb(in->d3, samsung->sabi_iface + SABI_IFACE_DATA + 10);
+ }
+ outb(readb(samsung->sabi + config->header_offsets.iface_func), port);
+
+ /* write protect memory to make it safe */
+ outb(readb(samsung->sabi + config->header_offsets.re_mem), port);
+
+ /* see if the command actually succeeded */
+ complete = readb(samsung->sabi_iface + SABI_IFACE_COMPLETE);
+ iface_data = readb(samsung->sabi_iface + SABI_IFACE_DATA);
+
+ /* iface_data = 0xFF happens when a command is not known
+ * so we only add a warning in debug mode since we will
+ * probably issue some unknown command at startup to find
+ * out which features are supported */
+ if (complete != 0xaa || (iface_data == 0xff && debug))
+ pr_warn("SABI command 0x%04x failed with"
+ " completion flag 0x%02x and interface data 0x%02x",
+ command, complete, iface_data);
+
+ if (complete != 0xaa || iface_data == 0xff) {
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ if (out) {
+ out->d0 = readl(samsung->sabi_iface + SABI_IFACE_DATA);
+ out->d1 = readl(samsung->sabi_iface + SABI_IFACE_DATA + 4);
+ out->d2 = readw(samsung->sabi_iface + SABI_IFACE_DATA + 2);
+ out->d3 = readb(samsung->sabi_iface + SABI_IFACE_DATA + 1);
+ }
+
+ if (debug && out) {
+ pr_info("SABI return data:{0x%08x, 0x%08x, 0x%04x, 0x%02x}",
+ out->d0, out->d1, out->d2, out->d3);
+ }
+
+exit:
+ mutex_unlock(&samsung->sabi_mutex);
+ return ret;
+}
+
+/* simple wrappers usable with most commands */
+static int sabi_set_commandb(struct samsung_laptop *samsung,
+ u16 command, u8 data)
+{
+ struct sabi_data in = { { { .d0 = 0, .d1 = 0, .d2 = 0, .d3 = 0 } } };
+
+ in.data[0] = data;
+ return sabi_command(samsung, command, &in, NULL);
+}
+
+static int read_brightness(struct samsung_laptop *samsung)
+{
+ const struct sabi_config *config = samsung->config;
+ const struct sabi_commands *commands = &samsung->config->commands;
+ struct sabi_data sretval;
+ int user_brightness = 0;
+ int retval;
+
+ retval = sabi_command(samsung, commands->get_brightness,
+ NULL, &sretval);
+ if (retval)
+ return retval;
+
+ user_brightness = sretval.data[0];
+ if (user_brightness > config->min_brightness)
+ user_brightness -= config->min_brightness;
+ else
+ user_brightness = 0;
+
+ return user_brightness;
+}
+
+static void set_brightness(struct samsung_laptop *samsung, u8 user_brightness)
+{
+ const struct sabi_config *config = samsung->config;
+ const struct sabi_commands *commands = &samsung->config->commands;
+ u8 user_level = user_brightness + config->min_brightness;
+
+ if (samsung->has_stepping_quirk && user_level != 0) {
+ /*
+ * short circuit if the specified level is what's already set
+ * to prevent the screen from flickering needlessly
+ */
+ if (user_brightness == read_brightness(samsung))
+ return;
+
+ sabi_set_commandb(samsung, commands->set_brightness, 0);
+ }
+
+ sabi_set_commandb(samsung, commands->set_brightness, user_level);
+}
+
+static int get_brightness(struct backlight_device *bd)
+{
+ struct samsung_laptop *samsung = bl_get_data(bd);
+
+ return read_brightness(samsung);
+}
+
+static void check_for_stepping_quirk(struct samsung_laptop *samsung)
+{
+ int initial_level;
+ int check_level;
+ int orig_level = read_brightness(samsung);
+
+ /*
+ * Some laptops exhibit the strange behaviour of stepping toward
+ * (rather than setting) the brightness except when changing to/from
+ * brightness level 0. This behaviour is checked for here and worked
+ * around in set_brightness.
+ */
+
+ if (orig_level == 0)
+ set_brightness(samsung, 1);
+
+ initial_level = read_brightness(samsung);
+
+ if (initial_level <= 2)
+ check_level = initial_level + 2;
+ else
+ check_level = initial_level - 2;
+
+ samsung->has_stepping_quirk = false;
+ set_brightness(samsung, check_level);
+
+ if (read_brightness(samsung) != check_level) {
+ samsung->has_stepping_quirk = true;
+ pr_info("enabled workaround for brightness stepping quirk\n");
+ }
+
+ set_brightness(samsung, orig_level);
+}
+
+static int update_status(struct backlight_device *bd)
+{
+ struct samsung_laptop *samsung = bl_get_data(bd);
+ const struct sabi_commands *commands = &samsung->config->commands;
+
+ set_brightness(samsung, bd->props.brightness);
+
+ if (bd->props.power == FB_BLANK_UNBLANK)
+ sabi_set_commandb(samsung, commands->set_backlight, 1);
+ else
+ sabi_set_commandb(samsung, commands->set_backlight, 0);
+
+ return 0;
+}
+
+static const struct backlight_ops backlight_ops = {
+ .get_brightness = get_brightness,
+ .update_status = update_status,
+};
+
+static int seclinux_rfkill_set(void *data, bool blocked)
+{
+ struct samsung_rfkill *srfkill = data;
+ struct samsung_laptop *samsung = srfkill->samsung;
+ const struct sabi_commands *commands = &samsung->config->commands;
+
+ return sabi_set_commandb(samsung, commands->set_wireless_button,
+ !blocked);
+}
+
+static struct rfkill_ops seclinux_rfkill_ops = {
+ .set_block = seclinux_rfkill_set,
+};
+
+static int swsmi_wireless_status(struct samsung_laptop *samsung,
+ struct sabi_data *data)
+{
+ const struct sabi_commands *commands = &samsung->config->commands;
+
+ return sabi_command(samsung, commands->get_wireless_status,
+ NULL, data);
+}
+
+static int swsmi_rfkill_set(void *priv, bool blocked)
+{
+ struct samsung_rfkill *srfkill = priv;
+ struct samsung_laptop *samsung = srfkill->samsung;
+ const struct sabi_commands *commands = &samsung->config->commands;
+ struct sabi_data data;
+ int ret, i;
+
+ ret = swsmi_wireless_status(samsung, &data);
+ if (ret)
+ return ret;
+
+ /* Don't set the state for non-present devices */
+ for (i = 0; i < 4; i++)
+ if (data.data[i] == 0x02)
+ data.data[1] = 0;
+
+ if (srfkill->type == RFKILL_TYPE_WLAN)
+ data.data[WL_STATUS_WLAN] = !blocked;
+ else if (srfkill->type == RFKILL_TYPE_BLUETOOTH)
+ data.data[WL_STATUS_BT] = !blocked;
+
+ return sabi_command(samsung, commands->set_wireless_status,
+ &data, &data);
+}
+
+static void swsmi_rfkill_query(struct rfkill *rfkill, void *priv)
+{
+ struct samsung_rfkill *srfkill = priv;
+ struct samsung_laptop *samsung = srfkill->samsung;
+ struct sabi_data data;
+ int ret;
+
+ ret = swsmi_wireless_status(samsung, &data);
+ if (ret)
+ return ;
+
+ if (srfkill->type == RFKILL_TYPE_WLAN)
+ ret = data.data[WL_STATUS_WLAN];
+ else if (srfkill->type == RFKILL_TYPE_BLUETOOTH)
+ ret = data.data[WL_STATUS_BT];
+ else
+ return ;
+
+ rfkill_set_sw_state(rfkill, !ret);
+}
+
+static struct rfkill_ops swsmi_rfkill_ops = {
+ .set_block = swsmi_rfkill_set,
+ .query = swsmi_rfkill_query,
+};
+
+static ssize_t get_performance_level(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct samsung_laptop *samsung = dev_get_drvdata(dev);
+ const struct sabi_config *config = samsung->config;
+ const struct sabi_commands *commands = &config->commands;
+ struct sabi_data sretval;
+ int retval;
+ int i;
+
+ /* Read the state */
+ retval = sabi_command(samsung, commands->get_performance_level,
+ NULL, &sretval);
+ if (retval)
+ return retval;
+
+ /* The logic is backwards, yeah, lots of fun... */
+ for (i = 0; config->performance_levels[i].name; ++i) {
+ if (sretval.data[0] == config->performance_levels[i].value)
+ return sprintf(buf, "%s\n", config->performance_levels[i].name);
+ }
+ return sprintf(buf, "%s\n", "unknown");
+}
+
+static ssize_t set_performance_level(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct samsung_laptop *samsung = dev_get_drvdata(dev);
+ const struct sabi_config *config = samsung->config;
+ const struct sabi_commands *commands = &config->commands;
+ int i;
+
+ if (count < 1)
+ return count;
+
+ for (i = 0; config->performance_levels[i].name; ++i) {
+ const struct sabi_performance_level *level =
+ &config->performance_levels[i];
+ if (!strncasecmp(level->name, buf, strlen(level->name))) {
+ sabi_set_commandb(samsung,
+ commands->set_performance_level,
+ level->value);
+ break;
+ }
+ }
+
+ if (!config->performance_levels[i].name)
+ return -EINVAL;
+
+ return count;
+}
+
+static DEVICE_ATTR(performance_level, S_IWUSR | S_IRUGO,
+ get_performance_level, set_performance_level);
+
+static int read_battery_life_extender(struct samsung_laptop *samsung)
+{
+ const struct sabi_commands *commands = &samsung->config->commands;
+ struct sabi_data data;
+ int retval;
+
+ if (commands->get_battery_life_extender == 0xFFFF)
+ return -ENODEV;
+
+ memset(&data, 0, sizeof(data));
+ data.data[0] = 0x80;
+ retval = sabi_command(samsung, commands->get_battery_life_extender,
+ &data, &data);
+
+ if (retval)
+ return retval;
+
+ if (data.data[0] != 0 && data.data[0] != 1)
+ return -ENODEV;
+
+ return data.data[0];
+}
+
+static int write_battery_life_extender(struct samsung_laptop *samsung,
+ int enabled)
+{
+ const struct sabi_commands *commands = &samsung->config->commands;
+ struct sabi_data data;
+
+ memset(&data, 0, sizeof(data));
+ data.data[0] = 0x80 | enabled;
+ return sabi_command(samsung, commands->set_battery_life_extender,
+ &data, NULL);
+}
+
+static ssize_t get_battery_life_extender(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct samsung_laptop *samsung = dev_get_drvdata(dev);
+ int ret;
+
+ ret = read_battery_life_extender(samsung);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", ret);
+}
+
+static ssize_t set_battery_life_extender(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct samsung_laptop *samsung = dev_get_drvdata(dev);
+ int ret, value;
+
+ if (!count || kstrtoint(buf, 0, &value) != 0)
+ return -EINVAL;
+
+ ret = write_battery_life_extender(samsung, !!value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static DEVICE_ATTR(battery_life_extender, S_IWUSR | S_IRUGO,
+ get_battery_life_extender, set_battery_life_extender);
+
+static int read_usb_charge(struct samsung_laptop *samsung)
+{
+ const struct sabi_commands *commands = &samsung->config->commands;
+ struct sabi_data data;
+ int retval;
+
+ if (commands->get_usb_charge == 0xFFFF)
+ return -ENODEV;
+
+ memset(&data, 0, sizeof(data));
+ data.data[0] = 0x80;
+ retval = sabi_command(samsung, commands->get_usb_charge,
+ &data, &data);
+
+ if (retval)
+ return retval;
+
+ if (data.data[0] != 0 && data.data[0] != 1)
+ return -ENODEV;
+
+ return data.data[0];
+}
+
+static int write_usb_charge(struct samsung_laptop *samsung,
+ int enabled)
+{
+ const struct sabi_commands *commands = &samsung->config->commands;
+ struct sabi_data data;
+
+ memset(&data, 0, sizeof(data));
+ data.data[0] = 0x80 | enabled;
+ return sabi_command(samsung, commands->set_usb_charge,
+ &data, NULL);
+}
+
+static ssize_t get_usb_charge(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct samsung_laptop *samsung = dev_get_drvdata(dev);
+ int ret;
+
+ ret = read_usb_charge(samsung);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", ret);
+}
+
+static ssize_t set_usb_charge(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct samsung_laptop *samsung = dev_get_drvdata(dev);
+ int ret, value;
+
+ if (!count || kstrtoint(buf, 0, &value) != 0)
+ return -EINVAL;
+
+ ret = write_usb_charge(samsung, !!value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static DEVICE_ATTR(usb_charge, S_IWUSR | S_IRUGO,
+ get_usb_charge, set_usb_charge);
+
+static int read_lid_handling(struct samsung_laptop *samsung)
+{
+ const struct sabi_commands *commands = &samsung->config->commands;
+ struct sabi_data data;
+ int retval;
+
+ if (commands->get_lid_handling == 0xFFFF)
+ return -ENODEV;
+
+ memset(&data, 0, sizeof(data));
+ retval = sabi_command(samsung, commands->get_lid_handling,
+ &data, &data);
+
+ if (retval)
+ return retval;
+
+ return data.data[0] & 0x1;
+}
+
+static int write_lid_handling(struct samsung_laptop *samsung,
+ int enabled)
+{
+ const struct sabi_commands *commands = &samsung->config->commands;
+ struct sabi_data data;
+
+ memset(&data, 0, sizeof(data));
+ data.data[0] = 0x80 | enabled;
+ return sabi_command(samsung, commands->set_lid_handling,
+ &data, NULL);
+}
+
+static ssize_t get_lid_handling(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct samsung_laptop *samsung = dev_get_drvdata(dev);
+ int ret;
+
+ ret = read_lid_handling(samsung);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", ret);
+}
+
+static ssize_t set_lid_handling(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct samsung_laptop *samsung = dev_get_drvdata(dev);
+ int ret, value;
+
+ if (!count || kstrtoint(buf, 0, &value) != 0)
+ return -EINVAL;
+
+ ret = write_lid_handling(samsung, !!value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static DEVICE_ATTR(lid_handling, S_IWUSR | S_IRUGO,
+ get_lid_handling, set_lid_handling);
+
+static struct attribute *platform_attributes[] = {
+ &dev_attr_performance_level.attr,
+ &dev_attr_battery_life_extender.attr,
+ &dev_attr_usb_charge.attr,
+ &dev_attr_lid_handling.attr,
+ NULL
+};
+
+static int find_signature(void __iomem *memcheck, const char *testStr)
+{
+ int i = 0;
+ int loca;
+
+ for (loca = 0; loca < 0xffff; loca++) {
+ char temp = readb(memcheck + loca);
+
+ if (temp == testStr[i]) {
+ if (i == strlen(testStr)-1)
+ break;
+ ++i;
+ } else {
+ i = 0;
+ }
+ }
+ return loca;
+}
+
+static void samsung_rfkill_exit(struct samsung_laptop *samsung)
+{
+ if (samsung->wlan.rfkill) {
+ rfkill_unregister(samsung->wlan.rfkill);
+ rfkill_destroy(samsung->wlan.rfkill);
+ samsung->wlan.rfkill = NULL;
+ }
+ if (samsung->bluetooth.rfkill) {
+ rfkill_unregister(samsung->bluetooth.rfkill);
+ rfkill_destroy(samsung->bluetooth.rfkill);
+ samsung->bluetooth.rfkill = NULL;
+ }
+}
+
+static int samsung_new_rfkill(struct samsung_laptop *samsung,
+ struct samsung_rfkill *arfkill,
+ const char *name, enum rfkill_type type,
+ const struct rfkill_ops *ops,
+ int blocked)
+{
+ struct rfkill **rfkill = &arfkill->rfkill;
+ int ret;
+
+ arfkill->type = type;
+ arfkill->samsung = samsung;
+
+ *rfkill = rfkill_alloc(name, &samsung->platform_device->dev,
+ type, ops, arfkill);
+
+ if (!*rfkill)
+ return -EINVAL;
+
+ if (blocked != -1)
+ rfkill_init_sw_state(*rfkill, blocked);
+
+ ret = rfkill_register(*rfkill);
+ if (ret) {
+ rfkill_destroy(*rfkill);
+ *rfkill = NULL;
+ return ret;
+ }
+ return 0;
+}
+
+static int __init samsung_rfkill_init_seclinux(struct samsung_laptop *samsung)
+{
+ return samsung_new_rfkill(samsung, &samsung->wlan, "samsung-wlan",
+ RFKILL_TYPE_WLAN, &seclinux_rfkill_ops, -1);
+}
+
+static int __init samsung_rfkill_init_swsmi(struct samsung_laptop *samsung)
+{
+ struct sabi_data data;
+ int ret;
+
+ ret = swsmi_wireless_status(samsung, &data);
+ if (ret) {
+ /* Some swsmi laptops use the old seclinux way to control
+ * wireless devices */
+ if (ret == -EINVAL)
+ ret = samsung_rfkill_init_seclinux(samsung);
+ return ret;
+ }
+
+ /* 0x02 seems to mean that the device is no present/available */
+
+ if (data.data[WL_STATUS_WLAN] != 0x02)
+ ret = samsung_new_rfkill(samsung, &samsung->wlan,
+ "samsung-wlan",
+ RFKILL_TYPE_WLAN,
+ &swsmi_rfkill_ops,
+ !data.data[WL_STATUS_WLAN]);
+ if (ret)
+ goto exit;
+
+ if (data.data[WL_STATUS_BT] != 0x02)
+ ret = samsung_new_rfkill(samsung, &samsung->bluetooth,
+ "samsung-bluetooth",
+ RFKILL_TYPE_BLUETOOTH,
+ &swsmi_rfkill_ops,
+ !data.data[WL_STATUS_BT]);
+ if (ret)
+ goto exit;
+
+exit:
+ if (ret)
+ samsung_rfkill_exit(samsung);
+
+ return ret;
+}
+
+static int __init samsung_rfkill_init(struct samsung_laptop *samsung)
+{
+ if (samsung->config->sabi_version == 2)
+ return samsung_rfkill_init_seclinux(samsung);
+ if (samsung->config->sabi_version == 3)
+ return samsung_rfkill_init_swsmi(samsung);
+ return 0;
+}
+
+static void samsung_lid_handling_exit(struct samsung_laptop *samsung)
+{
+ if (samsung->quirks->lid_handling)
+ write_lid_handling(samsung, 0);
+}
+
+static int __init samsung_lid_handling_init(struct samsung_laptop *samsung)
+{
+ int retval = 0;
+
+ if (samsung->quirks->lid_handling)
+ retval = write_lid_handling(samsung, 1);
+
+ return retval;
+}
+
+static int kbd_backlight_enable(struct samsung_laptop *samsung)
+{
+ const struct sabi_commands *commands = &samsung->config->commands;
+ struct sabi_data data;
+ int retval;
+
+ if (commands->kbd_backlight == 0xFFFF)
+ return -ENODEV;
+
+ memset(&data, 0, sizeof(data));
+ data.d0 = 0xaabb;
+ retval = sabi_command(samsung, commands->kbd_backlight,
+ &data, &data);
+
+ if (retval)
+ return retval;
+
+ if (data.d0 != 0xccdd)
+ return -ENODEV;
+ return 0;
+}
+
+static int kbd_backlight_read(struct samsung_laptop *samsung)
+{
+ const struct sabi_commands *commands = &samsung->config->commands;
+ struct sabi_data data;
+ int retval;
+
+ memset(&data, 0, sizeof(data));
+ data.data[0] = 0x81;
+ retval = sabi_command(samsung, commands->kbd_backlight,
+ &data, &data);
+
+ if (retval)
+ return retval;
+
+ return data.data[0];
+}
+
+static int kbd_backlight_write(struct samsung_laptop *samsung, int brightness)
+{
+ const struct sabi_commands *commands = &samsung->config->commands;
+ struct sabi_data data;
+
+ memset(&data, 0, sizeof(data));
+ data.d0 = 0x82 | ((brightness & 0xFF) << 8);
+ return sabi_command(samsung, commands->kbd_backlight,
+ &data, NULL);
+}
+
+static void kbd_led_update(struct work_struct *work)
+{
+ struct samsung_laptop *samsung;
+
+ samsung = container_of(work, struct samsung_laptop, kbd_led_work);
+ kbd_backlight_write(samsung, samsung->kbd_led_wk);
+}
+
+static void kbd_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct samsung_laptop *samsung;
+
+ samsung = container_of(led_cdev, struct samsung_laptop, kbd_led);
+
+ if (value > samsung->kbd_led.max_brightness)
+ value = samsung->kbd_led.max_brightness;
+ else if (value < 0)
+ value = 0;
+
+ samsung->kbd_led_wk = value;
+ queue_work(samsung->led_workqueue, &samsung->kbd_led_work);
+}
+
+static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
+{
+ struct samsung_laptop *samsung;
+
+ samsung = container_of(led_cdev, struct samsung_laptop, kbd_led);
+ return kbd_backlight_read(samsung);
+}
+
+static void samsung_leds_exit(struct samsung_laptop *samsung)
+{
+ if (!IS_ERR_OR_NULL(samsung->kbd_led.dev))
+ led_classdev_unregister(&samsung->kbd_led);
+ if (samsung->led_workqueue)
+ destroy_workqueue(samsung->led_workqueue);
+}
+
+static int __init samsung_leds_init(struct samsung_laptop *samsung)
+{
+ int ret = 0;
+
+ samsung->led_workqueue = create_singlethread_workqueue("led_workqueue");
+ if (!samsung->led_workqueue)
+ return -ENOMEM;
+
+ if (kbd_backlight_enable(samsung) >= 0) {
+ INIT_WORK(&samsung->kbd_led_work, kbd_led_update);
+
+ samsung->kbd_led.name = "samsung::kbd_backlight";
+ samsung->kbd_led.brightness_set = kbd_led_set;
+ samsung->kbd_led.brightness_get = kbd_led_get;
+ samsung->kbd_led.max_brightness = 8;
+ if (samsung->quirks->four_kbd_backlight_levels)
+ samsung->kbd_led.max_brightness = 4;
+
+ ret = led_classdev_register(&samsung->platform_device->dev,
+ &samsung->kbd_led);
+ }
+
+ if (ret)
+ samsung_leds_exit(samsung);
+
+ return ret;
+}
+
+static void samsung_backlight_exit(struct samsung_laptop *samsung)
+{
+ if (samsung->backlight_device) {
+ backlight_device_unregister(samsung->backlight_device);
+ samsung->backlight_device = NULL;
+ }
+}
+
+static int __init samsung_backlight_init(struct samsung_laptop *samsung)
+{
+ struct backlight_device *bd;
+ struct backlight_properties props;
+
+ if (!samsung->handle_backlight)
+ return 0;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = samsung->config->max_brightness -
+ samsung->config->min_brightness;
+
+ bd = backlight_device_register("samsung",
+ &samsung->platform_device->dev,
+ samsung, &backlight_ops,
+ &props);
+ if (IS_ERR(bd))
+ return PTR_ERR(bd);
+
+ samsung->backlight_device = bd;
+ samsung->backlight_device->props.brightness = read_brightness(samsung);
+ samsung->backlight_device->props.power = FB_BLANK_UNBLANK;
+ backlight_update_status(samsung->backlight_device);
+
+ return 0;
+}
+
+static umode_t samsung_sysfs_is_visible(struct kobject *kobj,
+ struct attribute *attr, int idx)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct platform_device *pdev = to_platform_device(dev);
+ struct samsung_laptop *samsung = platform_get_drvdata(pdev);
+ bool ok = true;
+
+ if (attr == &dev_attr_performance_level.attr)
+ ok = !!samsung->config->performance_levels[0].name;
+ if (attr == &dev_attr_battery_life_extender.attr)
+ ok = !!(read_battery_life_extender(samsung) >= 0);
+ if (attr == &dev_attr_usb_charge.attr)
+ ok = !!(read_usb_charge(samsung) >= 0);
+ if (attr == &dev_attr_lid_handling.attr)
+ ok = !!(read_lid_handling(samsung) >= 0);
+
+ return ok ? attr->mode : 0;
+}
+
+static struct attribute_group platform_attribute_group = {
+ .is_visible = samsung_sysfs_is_visible,
+ .attrs = platform_attributes
+};
+
+static void samsung_sysfs_exit(struct samsung_laptop *samsung)
+{
+ struct platform_device *device = samsung->platform_device;
+
+ sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
+}
+
+static int __init samsung_sysfs_init(struct samsung_laptop *samsung)
+{
+ struct platform_device *device = samsung->platform_device;
+
+ return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
+
+}
+
+static int show_call(struct seq_file *m, void *data)
+{
+ struct samsung_laptop *samsung = m->private;
+ struct sabi_data *sdata = &samsung->debug.data;
+ int ret;
+
+ seq_printf(m, "SABI 0x%04x {0x%08x, 0x%08x, 0x%04x, 0x%02x}\n",
+ samsung->debug.command,
+ sdata->d0, sdata->d1, sdata->d2, sdata->d3);
+
+ ret = sabi_command(samsung, samsung->debug.command, sdata, sdata);
+
+ if (ret) {
+ seq_printf(m, "SABI command 0x%04x failed\n",
+ samsung->debug.command);
+ return ret;
+ }
+
+ seq_printf(m, "SABI {0x%08x, 0x%08x, 0x%04x, 0x%02x}\n",
+ sdata->d0, sdata->d1, sdata->d2, sdata->d3);
+ return 0;
+}
+
+static int samsung_debugfs_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, show_call, inode->i_private);
+}
+
+static const struct file_operations samsung_laptop_call_io_ops = {
+ .owner = THIS_MODULE,
+ .open = samsung_debugfs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void samsung_debugfs_exit(struct samsung_laptop *samsung)
+{
+ debugfs_remove_recursive(samsung->debug.root);
+}
+
+static int samsung_debugfs_init(struct samsung_laptop *samsung)
+{
+ struct dentry *dent;
+
+ samsung->debug.root = debugfs_create_dir("samsung-laptop", NULL);
+ if (!samsung->debug.root) {
+ pr_err("failed to create debugfs directory");
+ goto error_debugfs;
+ }
+
+ samsung->debug.f0000_wrapper.data = samsung->f0000_segment;
+ samsung->debug.f0000_wrapper.size = 0xffff;
+
+ samsung->debug.data_wrapper.data = &samsung->debug.data;
+ samsung->debug.data_wrapper.size = sizeof(samsung->debug.data);
+
+ samsung->debug.sdiag_wrapper.data = samsung->sdiag;
+ samsung->debug.sdiag_wrapper.size = strlen(samsung->sdiag);
+
+ dent = debugfs_create_u16("command", S_IRUGO | S_IWUSR,
+ samsung->debug.root, &samsung->debug.command);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_u32("d0", S_IRUGO | S_IWUSR, samsung->debug.root,
+ &samsung->debug.data.d0);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_u32("d1", S_IRUGO | S_IWUSR, samsung->debug.root,
+ &samsung->debug.data.d1);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_u16("d2", S_IRUGO | S_IWUSR, samsung->debug.root,
+ &samsung->debug.data.d2);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_u8("d3", S_IRUGO | S_IWUSR, samsung->debug.root,
+ &samsung->debug.data.d3);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_blob("data", S_IRUGO | S_IWUSR,
+ samsung->debug.root,
+ &samsung->debug.data_wrapper);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_blob("f0000_segment", S_IRUSR | S_IWUSR,
+ samsung->debug.root,
+ &samsung->debug.f0000_wrapper);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_file("call", S_IFREG | S_IRUGO,
+ samsung->debug.root, samsung,
+ &samsung_laptop_call_io_ops);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_blob("sdiag", S_IRUGO | S_IWUSR,
+ samsung->debug.root,
+ &samsung->debug.sdiag_wrapper);
+ if (!dent)
+ goto error_debugfs;
+
+ return 0;
+
+error_debugfs:
+ samsung_debugfs_exit(samsung);
+ return -ENOMEM;
+}
+
+static void samsung_sabi_exit(struct samsung_laptop *samsung)
+{
+ const struct sabi_config *config = samsung->config;
+
+ /* Turn off "Linux" mode in the BIOS */
+ if (config && config->commands.set_linux != 0xff)
+ sabi_set_commandb(samsung, config->commands.set_linux, 0x80);
+
+ if (samsung->sabi_iface) {
+ iounmap(samsung->sabi_iface);
+ samsung->sabi_iface = NULL;
+ }
+ if (samsung->f0000_segment) {
+ iounmap(samsung->f0000_segment);
+ samsung->f0000_segment = NULL;
+ }
+
+ samsung->config = NULL;
+}
+
+static __init void samsung_sabi_infos(struct samsung_laptop *samsung, int loca,
+ unsigned int ifaceP)
+{
+ const struct sabi_config *config = samsung->config;
+
+ printk(KERN_DEBUG "This computer supports SABI==%x\n",
+ loca + 0xf0000 - 6);
+
+ printk(KERN_DEBUG "SABI header:\n");
+ printk(KERN_DEBUG " SMI Port Number = 0x%04x\n",
+ readw(samsung->sabi + config->header_offsets.port));
+ printk(KERN_DEBUG " SMI Interface Function = 0x%02x\n",
+ readb(samsung->sabi + config->header_offsets.iface_func));
+ printk(KERN_DEBUG " SMI enable memory buffer = 0x%02x\n",
+ readb(samsung->sabi + config->header_offsets.en_mem));
+ printk(KERN_DEBUG " SMI restore memory buffer = 0x%02x\n",
+ readb(samsung->sabi + config->header_offsets.re_mem));
+ printk(KERN_DEBUG " SABI data offset = 0x%04x\n",
+ readw(samsung->sabi + config->header_offsets.data_offset));
+ printk(KERN_DEBUG " SABI data segment = 0x%04x\n",
+ readw(samsung->sabi + config->header_offsets.data_segment));
+
+ printk(KERN_DEBUG " SABI pointer = 0x%08x\n", ifaceP);
+}
+
+static void __init samsung_sabi_diag(struct samsung_laptop *samsung)
+{
+ int loca = find_signature(samsung->f0000_segment, "SDiaG@");
+ int i;
+
+ if (loca == 0xffff)
+ return ;
+
+ /* Example:
+ * Ident: @SDiaG@686XX-N90X3A/966-SEC-07HL-S90X3A
+ *
+ * Product name: 90X3A
+ * BIOS Version: 07HL
+ */
+ loca += 1;
+ for (i = 0; loca < 0xffff && i < sizeof(samsung->sdiag) - 1; loca++) {
+ char temp = readb(samsung->f0000_segment + loca);
+
+ if (isalnum(temp) || temp == '/' || temp == '-')
+ samsung->sdiag[i++] = temp;
+ else
+ break ;
+ }
+
+ if (debug && samsung->sdiag[0])
+ pr_info("sdiag: %s", samsung->sdiag);
+}
+
+static int __init samsung_sabi_init(struct samsung_laptop *samsung)
+{
+ const struct sabi_config *config = NULL;
+ const struct sabi_commands *commands;
+ unsigned int ifaceP;
+ int ret = 0;
+ int i;
+ int loca;
+
+ samsung->f0000_segment = ioremap_nocache(0xf0000, 0xffff);
+ if (!samsung->f0000_segment) {
+ if (debug || force)
+ pr_err("Can't map the segment at 0xf0000\n");
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ samsung_sabi_diag(samsung);
+
+ /* Try to find one of the signatures in memory to find the header */
+ for (i = 0; sabi_configs[i].test_string != NULL; ++i) {
+ samsung->config = &sabi_configs[i];
+ loca = find_signature(samsung->f0000_segment,
+ samsung->config->test_string);
+ if (loca != 0xffff)
+ break;
+ }
+
+ if (loca == 0xffff) {
+ if (debug || force)
+ pr_err("This computer does not support SABI\n");
+ ret = -ENODEV;
+ goto exit;
+ }
+
+ config = samsung->config;
+ commands = &config->commands;
+
+ /* point to the SMI port Number */
+ loca += 1;
+ samsung->sabi = (samsung->f0000_segment + loca);
+
+ /* Get a pointer to the SABI Interface */
+ ifaceP = (readw(samsung->sabi + config->header_offsets.data_segment) & 0x0ffff) << 4;
+ ifaceP += readw(samsung->sabi + config->header_offsets.data_offset) & 0x0ffff;
+
+ if (debug)
+ samsung_sabi_infos(samsung, loca, ifaceP);
+
+ samsung->sabi_iface = ioremap_nocache(ifaceP, 16);
+ if (!samsung->sabi_iface) {
+ pr_err("Can't remap %x\n", ifaceP);
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ /* Turn on "Linux" mode in the BIOS */
+ if (commands->set_linux != 0xff) {
+ int retval = sabi_set_commandb(samsung,
+ commands->set_linux, 0x81);
+ if (retval) {
+ pr_warn("Linux mode was not set!\n");
+ ret = -ENODEV;
+ goto exit;
+ }
+ }
+
+ /* Check for stepping quirk */
+ if (samsung->handle_backlight)
+ check_for_stepping_quirk(samsung);
+
+ pr_info("detected SABI interface: %s\n",
+ samsung->config->test_string);
+
+exit:
+ if (ret)
+ samsung_sabi_exit(samsung);
+
+ return ret;
+}
+
+static void samsung_platform_exit(struct samsung_laptop *samsung)
+{
+ if (samsung->platform_device) {
+ platform_device_unregister(samsung->platform_device);
+ samsung->platform_device = NULL;
+ }
+}
+
+static int samsung_pm_notification(struct notifier_block *nb,
+ unsigned long val, void *ptr)
+{
+ struct samsung_laptop *samsung;
+
+ samsung = container_of(nb, struct samsung_laptop, pm_nb);
+ if (val == PM_POST_HIBERNATION &&
+ samsung->quirks->enable_kbd_backlight)
+ kbd_backlight_enable(samsung);
+
+ if (val == PM_POST_HIBERNATION && samsung->quirks->lid_handling)
+ write_lid_handling(samsung, 1);
+
+ return 0;
+}
+
+static int __init samsung_platform_init(struct samsung_laptop *samsung)
+{
+ struct platform_device *pdev;
+
+ pdev = platform_device_register_simple("samsung", -1, NULL, 0);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+
+ samsung->platform_device = pdev;
+ platform_set_drvdata(samsung->platform_device, samsung);
+ return 0;
+}
+
+static struct samsung_quirks *quirks;
+
+static int __init samsung_dmi_matched(const struct dmi_system_id *d)
+{
+ quirks = d->driver_data;
+ return 0;
+}
+
+static struct dmi_system_id __initdata samsung_dmi_table[] = {
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR,
+ "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
+ },
+ },
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR,
+ "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /* Laptop */
+ },
+ },
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR,
+ "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */
+ },
+ },
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR,
+ "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_CHASSIS_TYPE, "14"), /* Sub-Notebook */
+ },
+ },
+ /* DMI ids for laptops with bad Chassis Type */
+ {
+ .ident = "R40/R41",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "R40/R41"),
+ DMI_MATCH(DMI_BOARD_NAME, "R40/R41"),
+ },
+ },
+ /* Specific DMI ids for laptop with quirks */
+ {
+ .callback = samsung_dmi_matched,
+ .ident = "N150P",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "N150P"),
+ DMI_MATCH(DMI_BOARD_NAME, "N150P"),
+ },
+ .driver_data = &samsung_use_native_backlight,
+ },
+ {
+ .callback = samsung_dmi_matched,
+ .ident = "N145P/N250P/N260P",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"),
+ DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"),
+ },
+ .driver_data = &samsung_use_native_backlight,
+ },
+ {
+ .callback = samsung_dmi_matched,
+ .ident = "N150/N210/N220",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"),
+ DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"),
+ },
+ .driver_data = &samsung_broken_acpi_video,
+ },
+ {
+ .callback = samsung_dmi_matched,
+ .ident = "NF110/NF210/NF310",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"),
+ DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"),
+ },
+ .driver_data = &samsung_broken_acpi_video,
+ },
+ {
+ .callback = samsung_dmi_matched,
+ .ident = "X360",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X360"),
+ DMI_MATCH(DMI_BOARD_NAME, "X360"),
+ },
+ .driver_data = &samsung_broken_acpi_video,
+ },
+ {
+ .callback = samsung_dmi_matched,
+ .ident = "N250P",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "N250P"),
+ DMI_MATCH(DMI_BOARD_NAME, "N250P"),
+ },
+ .driver_data = &samsung_use_native_backlight,
+ },
+ {
+ .callback = samsung_dmi_matched,
+ .ident = "NC210",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "NC210/NC110"),
+ DMI_MATCH(DMI_BOARD_NAME, "NC210/NC110"),
+ },
+ .driver_data = &samsung_broken_acpi_video,
+ },
+ {
+ .callback = samsung_dmi_matched,
+ .ident = "730U3E/740U3E",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"),
+ },
+ .driver_data = &samsung_np740u3e,
+ },
+ {
+ .callback = samsung_dmi_matched,
+ .ident = "300V3Z/300V4Z/300V5Z",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "300V3Z/300V4Z/300V5Z"),
+ },
+ .driver_data = &samsung_lid_handling,
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(dmi, samsung_dmi_table);
+
+static struct platform_device *samsung_platform_device;
+
+static int __init samsung_init(void)
+{
+ struct samsung_laptop *samsung;
+ int ret;
+
+ if (efi_enabled(EFI_BOOT))
+ return -ENODEV;
+
+ quirks = &samsung_unknown;
+ if (!force && !dmi_check_system(samsung_dmi_table))
+ return -ENODEV;
+
+ samsung = kzalloc(sizeof(*samsung), GFP_KERNEL);
+ if (!samsung)
+ return -ENOMEM;
+
+ mutex_init(&samsung->sabi_mutex);
+ samsung->handle_backlight = true;
+ samsung->quirks = quirks;
+
+
+#ifdef CONFIG_ACPI
+ if (samsung->quirks->broken_acpi_video)
+ acpi_video_dmi_promote_vendor();
+
+ /* Don't handle backlight here if the acpi video already handle it */
+ if (acpi_video_backlight_support()) {
+ samsung->handle_backlight = false;
+ } else if (samsung->quirks->broken_acpi_video) {
+ pr_info("Disabling ACPI video driver\n");
+ acpi_video_unregister();
+ }
+
+ if (samsung->quirks->use_native_backlight) {
+ pr_info("Using native backlight driver\n");
+ /* Tell acpi-video to not handle the backlight */
+ acpi_video_dmi_promote_vendor();
+ acpi_video_unregister();
+ /* And also do not handle it ourselves */
+ samsung->handle_backlight = false;
+ }
+#endif
+
+ ret = samsung_platform_init(samsung);
+ if (ret)
+ goto error_platform;
+
+ ret = samsung_sabi_init(samsung);
+ if (ret)
+ goto error_sabi;
+
+#ifdef CONFIG_ACPI
+ /* Only log that if we are really on a sabi platform */
+ if (acpi_video_backlight_support())
+ pr_info("Backlight controlled by ACPI video driver\n");
+#endif
+
+ ret = samsung_sysfs_init(samsung);
+ if (ret)
+ goto error_sysfs;
+
+ ret = samsung_backlight_init(samsung);
+ if (ret)
+ goto error_backlight;
+
+ ret = samsung_rfkill_init(samsung);
+ if (ret)
+ goto error_rfkill;
+
+ ret = samsung_leds_init(samsung);
+ if (ret)
+ goto error_leds;
+
+ ret = samsung_lid_handling_init(samsung);
+ if (ret)
+ goto error_lid_handling;
+
+ ret = samsung_debugfs_init(samsung);
+ if (ret)
+ goto error_debugfs;
+
+ samsung->pm_nb.notifier_call = samsung_pm_notification;
+ register_pm_notifier(&samsung->pm_nb);
+
+ samsung_platform_device = samsung->platform_device;
+ return ret;
+
+error_debugfs:
+ samsung_lid_handling_exit(samsung);
+error_lid_handling:
+ samsung_leds_exit(samsung);
+error_leds:
+ samsung_rfkill_exit(samsung);
+error_rfkill:
+ samsung_backlight_exit(samsung);
+error_backlight:
+ samsung_sysfs_exit(samsung);
+error_sysfs:
+ samsung_sabi_exit(samsung);
+error_sabi:
+ samsung_platform_exit(samsung);
+error_platform:
+ kfree(samsung);
+ return ret;
+}
+
+static void __exit samsung_exit(void)
+{
+ struct samsung_laptop *samsung;
+
+ samsung = platform_get_drvdata(samsung_platform_device);
+ unregister_pm_notifier(&samsung->pm_nb);
+
+ samsung_debugfs_exit(samsung);
+ samsung_lid_handling_exit(samsung);
+ samsung_leds_exit(samsung);
+ samsung_rfkill_exit(samsung);
+ samsung_backlight_exit(samsung);
+ samsung_sysfs_exit(samsung);
+ samsung_sabi_exit(samsung);
+ samsung_platform_exit(samsung);
+
+ kfree(samsung);
+ samsung_platform_device = NULL;
+}
+
+module_init(samsung_init);
+module_exit(samsung_exit);
+
+MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@suse.de>");
+MODULE_DESCRIPTION("Samsung Backlight driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/samsung-q10.c b/drivers/platform/x86/samsung-q10.c
new file mode 100644
index 000000000..e6aac725a
--- /dev/null
+++ b/drivers/platform/x86/samsung-q10.c
@@ -0,0 +1,163 @@
+/*
+ * Driver for Samsung Q10 and related laptops: controls the backlight
+ *
+ * Copyright (c) 2011 Frederick van der Wyck <fvanderwyck@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/backlight.h>
+#include <linux/dmi.h>
+#include <linux/acpi.h>
+
+#define SAMSUNGQ10_BL_MAX_INTENSITY 7
+
+static acpi_handle ec_handle;
+
+static bool force;
+module_param(force, bool, 0);
+MODULE_PARM_DESC(force,
+ "Disable the DMI check and force the driver to be loaded");
+
+static int samsungq10_bl_set_intensity(struct backlight_device *bd)
+{
+
+ acpi_status status;
+ int i;
+
+ for (i = 0; i < SAMSUNGQ10_BL_MAX_INTENSITY; i++) {
+ status = acpi_evaluate_object(ec_handle, "_Q63", NULL, NULL);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+ }
+ for (i = 0; i < bd->props.brightness; i++) {
+ status = acpi_evaluate_object(ec_handle, "_Q64", NULL, NULL);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static const struct backlight_ops samsungq10_bl_ops = {
+ .update_status = samsungq10_bl_set_intensity,
+};
+
+static int samsungq10_probe(struct platform_device *pdev)
+{
+
+ struct backlight_properties props;
+ struct backlight_device *bd;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = SAMSUNGQ10_BL_MAX_INTENSITY;
+ bd = backlight_device_register("samsung", &pdev->dev, NULL,
+ &samsungq10_bl_ops, &props);
+ if (IS_ERR(bd))
+ return PTR_ERR(bd);
+
+ platform_set_drvdata(pdev, bd);
+
+ return 0;
+}
+
+static int samsungq10_remove(struct platform_device *pdev)
+{
+
+ struct backlight_device *bd = platform_get_drvdata(pdev);
+
+ backlight_device_unregister(bd);
+
+ return 0;
+}
+
+static struct platform_driver samsungq10_driver = {
+ .driver = {
+ .name = KBUILD_MODNAME,
+ },
+ .probe = samsungq10_probe,
+ .remove = samsungq10_remove,
+};
+
+static struct platform_device *samsungq10_device;
+
+static int __init dmi_check_callback(const struct dmi_system_id *id)
+{
+ printk(KERN_INFO KBUILD_MODNAME ": found model '%s'\n", id->ident);
+ return 1;
+}
+
+static struct dmi_system_id __initdata samsungq10_dmi_table[] = {
+ {
+ .ident = "Samsung Q10",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Samsung"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "SQ10"),
+ },
+ .callback = dmi_check_callback,
+ },
+ {
+ .ident = "Samsung Q20",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG Electronics"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "SENS Q20"),
+ },
+ .callback = dmi_check_callback,
+ },
+ {
+ .ident = "Samsung Q25",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG Electronics"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "NQ25"),
+ },
+ .callback = dmi_check_callback,
+ },
+ {
+ .ident = "Dell Latitude X200",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X200"),
+ },
+ .callback = dmi_check_callback,
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(dmi, samsungq10_dmi_table);
+
+static int __init samsungq10_init(void)
+{
+ if (!force && !dmi_check_system(samsungq10_dmi_table))
+ return -ENODEV;
+
+ ec_handle = ec_get_handle();
+
+ if (!ec_handle)
+ return -ENODEV;
+
+ samsungq10_device = platform_create_bundle(&samsungq10_driver,
+ samsungq10_probe,
+ NULL, 0, NULL, 0);
+
+ return PTR_ERR_OR_ZERO(samsungq10_device);
+}
+
+static void __exit samsungq10_exit(void)
+{
+ platform_device_unregister(samsungq10_device);
+ platform_driver_unregister(&samsungq10_driver);
+}
+
+module_init(samsungq10_init);
+module_exit(samsungq10_exit);
+
+MODULE_AUTHOR("Frederick van der Wyck <fvanderwyck@gmail.com>");
+MODULE_DESCRIPTION("Samsung Q10 Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
new file mode 100644
index 000000000..e51c1e753
--- /dev/null
+++ b/drivers/platform/x86/sony-laptop.c
@@ -0,0 +1,4911 @@
+/*
+ * ACPI Sony Notebook Control Driver (SNC and SPIC)
+ *
+ * Copyright (C) 2004-2005 Stelian Pop <stelian@popies.net>
+ * Copyright (C) 2007-2009 Mattia Dongili <malattia@linux.it>
+ *
+ * Parts of this driver inspired from asus_acpi.c and ibm_acpi.c
+ * which are copyrighted by their respective authors.
+ *
+ * The SNY6001 driver part is based on the sonypi driver which includes
+ * material from:
+ *
+ * Copyright (C) 2001-2005 Stelian Pop <stelian@popies.net>
+ *
+ * Copyright (C) 2005 Narayanan R S <nars@kadamba.org>
+ *
+ * Copyright (C) 2001-2002 Alcôve <www.alcove.com>
+ *
+ * Copyright (C) 2001 Michael Ashley <m.ashley@unsw.edu.au>
+ *
+ * Copyright (C) 2001 Junichi Morita <jun1m@mars.dti.ne.jp>
+ *
+ * Copyright (C) 2000 Takaya Kinjo <t-kinjo@tc4.so-net.ne.jp>
+ *
+ * Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com>
+ *
+ * Earlier work by Werner Almesberger, Paul `Rusty' Russell and Paul Mackerras.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/backlight.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/dmi.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/input.h>
+#include <linux/kfifo.h>
+#include <linux/workqueue.h>
+#include <linux/acpi.h>
+#include <linux/slab.h>
+#include <linux/sonypi.h>
+#include <linux/sony-laptop.h>
+#include <linux/rfkill.h>
+#ifdef CONFIG_SONYPI_COMPAT
+#include <linux/poll.h>
+#include <linux/miscdevice.h>
+#endif
+#include <asm/uaccess.h>
+
+#define dprintk(fmt, ...) \
+do { \
+ if (debug) \
+ pr_warn(fmt, ##__VA_ARGS__); \
+} while (0)
+
+#define SONY_NC_CLASS "sony-nc"
+#define SONY_NC_HID "SNY5001"
+#define SONY_NC_DRIVER_NAME "Sony Notebook Control Driver"
+
+#define SONY_PIC_CLASS "sony-pic"
+#define SONY_PIC_HID "SNY6001"
+#define SONY_PIC_DRIVER_NAME "Sony Programmable IO Control Driver"
+
+MODULE_AUTHOR("Stelian Pop, Mattia Dongili");
+MODULE_DESCRIPTION("Sony laptop extras driver (SPIC and SNC ACPI device)");
+MODULE_LICENSE("GPL");
+
+static int debug;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
+ "the development of this driver");
+
+static int no_spic; /* = 0 */
+module_param(no_spic, int, 0444);
+MODULE_PARM_DESC(no_spic,
+ "set this if you don't want to enable the SPIC device");
+
+static int compat; /* = 0 */
+module_param(compat, int, 0444);
+MODULE_PARM_DESC(compat,
+ "set this if you want to enable backward compatibility mode");
+
+static unsigned long mask = 0xffffffff;
+module_param(mask, ulong, 0644);
+MODULE_PARM_DESC(mask,
+ "set this to the mask of event you want to enable (see doc)");
+
+static int camera; /* = 0 */
+module_param(camera, int, 0444);
+MODULE_PARM_DESC(camera,
+ "set this to 1 to enable Motion Eye camera controls "
+ "(only use it if you have a C1VE or C1VN model)");
+
+#ifdef CONFIG_SONYPI_COMPAT
+static int minor = -1;
+module_param(minor, int, 0);
+MODULE_PARM_DESC(minor,
+ "minor number of the misc device for the SPIC compatibility code, "
+ "default is -1 (automatic)");
+#endif
+
+static int kbd_backlight = -1;
+module_param(kbd_backlight, int, 0444);
+MODULE_PARM_DESC(kbd_backlight,
+ "set this to 0 to disable keyboard backlight, "
+ "1 to enable it with automatic control and 2 to have it always "
+ "on (default: no change from current value)");
+
+static int kbd_backlight_timeout = -1;
+module_param(kbd_backlight_timeout, int, 0444);
+MODULE_PARM_DESC(kbd_backlight_timeout,
+ "meaningful values vary from 0 to 3 and their meaning depends "
+ "on the model (default: no change from current value)");
+
+#ifdef CONFIG_PM_SLEEP
+static void sony_nc_thermal_resume(void);
+#endif
+static int sony_nc_kbd_backlight_setup(struct platform_device *pd,
+ unsigned int handle);
+static void sony_nc_kbd_backlight_cleanup(struct platform_device *pd,
+ unsigned int handle);
+
+static int sony_nc_battery_care_setup(struct platform_device *pd,
+ unsigned int handle);
+static void sony_nc_battery_care_cleanup(struct platform_device *pd);
+
+static int sony_nc_thermal_setup(struct platform_device *pd);
+static void sony_nc_thermal_cleanup(struct platform_device *pd);
+
+static int sony_nc_lid_resume_setup(struct platform_device *pd,
+ unsigned int handle);
+static void sony_nc_lid_resume_cleanup(struct platform_device *pd);
+
+static int sony_nc_gfx_switch_setup(struct platform_device *pd,
+ unsigned int handle);
+static void sony_nc_gfx_switch_cleanup(struct platform_device *pd);
+static int __sony_nc_gfx_switch_status_get(void);
+
+static int sony_nc_highspeed_charging_setup(struct platform_device *pd);
+static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd);
+
+static int sony_nc_lowbatt_setup(struct platform_device *pd);
+static void sony_nc_lowbatt_cleanup(struct platform_device *pd);
+
+static int sony_nc_fanspeed_setup(struct platform_device *pd);
+static void sony_nc_fanspeed_cleanup(struct platform_device *pd);
+
+static int sony_nc_usb_charge_setup(struct platform_device *pd);
+static void sony_nc_usb_charge_cleanup(struct platform_device *pd);
+
+static int sony_nc_panelid_setup(struct platform_device *pd);
+static void sony_nc_panelid_cleanup(struct platform_device *pd);
+
+static int sony_nc_smart_conn_setup(struct platform_device *pd);
+static void sony_nc_smart_conn_cleanup(struct platform_device *pd);
+
+static int sony_nc_touchpad_setup(struct platform_device *pd,
+ unsigned int handle);
+static void sony_nc_touchpad_cleanup(struct platform_device *pd);
+
+enum sony_nc_rfkill {
+ SONY_WIFI,
+ SONY_BLUETOOTH,
+ SONY_WWAN,
+ SONY_WIMAX,
+ N_SONY_RFKILL,
+};
+
+static int sony_rfkill_handle;
+static struct rfkill *sony_rfkill_devices[N_SONY_RFKILL];
+static int sony_rfkill_address[N_SONY_RFKILL] = {0x300, 0x500, 0x700, 0x900};
+static int sony_nc_rfkill_setup(struct acpi_device *device,
+ unsigned int handle);
+static void sony_nc_rfkill_cleanup(void);
+static void sony_nc_rfkill_update(void);
+
+/*********** Input Devices ***********/
+
+#define SONY_LAPTOP_BUF_SIZE 128
+struct sony_laptop_input_s {
+ atomic_t users;
+ struct input_dev *jog_dev;
+ struct input_dev *key_dev;
+ struct kfifo fifo;
+ spinlock_t fifo_lock;
+ struct timer_list release_key_timer;
+};
+
+static struct sony_laptop_input_s sony_laptop_input = {
+ .users = ATOMIC_INIT(0),
+};
+
+struct sony_laptop_keypress {
+ struct input_dev *dev;
+ int key;
+};
+
+/* Correspondance table between sonypi events
+ * and input layer indexes in the keymap
+ */
+static int sony_laptop_input_index[] = {
+ -1, /* 0 no event */
+ -1, /* 1 SONYPI_EVENT_JOGDIAL_DOWN */
+ -1, /* 2 SONYPI_EVENT_JOGDIAL_UP */
+ -1, /* 3 SONYPI_EVENT_JOGDIAL_DOWN_PRESSED */
+ -1, /* 4 SONYPI_EVENT_JOGDIAL_UP_PRESSED */
+ -1, /* 5 SONYPI_EVENT_JOGDIAL_PRESSED */
+ -1, /* 6 SONYPI_EVENT_JOGDIAL_RELEASED */
+ 0, /* 7 SONYPI_EVENT_CAPTURE_PRESSED */
+ 1, /* 8 SONYPI_EVENT_CAPTURE_RELEASED */
+ 2, /* 9 SONYPI_EVENT_CAPTURE_PARTIALPRESSED */
+ 3, /* 10 SONYPI_EVENT_CAPTURE_PARTIALRELEASED */
+ 4, /* 11 SONYPI_EVENT_FNKEY_ESC */
+ 5, /* 12 SONYPI_EVENT_FNKEY_F1 */
+ 6, /* 13 SONYPI_EVENT_FNKEY_F2 */
+ 7, /* 14 SONYPI_EVENT_FNKEY_F3 */
+ 8, /* 15 SONYPI_EVENT_FNKEY_F4 */
+ 9, /* 16 SONYPI_EVENT_FNKEY_F5 */
+ 10, /* 17 SONYPI_EVENT_FNKEY_F6 */
+ 11, /* 18 SONYPI_EVENT_FNKEY_F7 */
+ 12, /* 19 SONYPI_EVENT_FNKEY_F8 */
+ 13, /* 20 SONYPI_EVENT_FNKEY_F9 */
+ 14, /* 21 SONYPI_EVENT_FNKEY_F10 */
+ 15, /* 22 SONYPI_EVENT_FNKEY_F11 */
+ 16, /* 23 SONYPI_EVENT_FNKEY_F12 */
+ 17, /* 24 SONYPI_EVENT_FNKEY_1 */
+ 18, /* 25 SONYPI_EVENT_FNKEY_2 */
+ 19, /* 26 SONYPI_EVENT_FNKEY_D */
+ 20, /* 27 SONYPI_EVENT_FNKEY_E */
+ 21, /* 28 SONYPI_EVENT_FNKEY_F */
+ 22, /* 29 SONYPI_EVENT_FNKEY_S */
+ 23, /* 30 SONYPI_EVENT_FNKEY_B */
+ 24, /* 31 SONYPI_EVENT_BLUETOOTH_PRESSED */
+ 25, /* 32 SONYPI_EVENT_PKEY_P1 */
+ 26, /* 33 SONYPI_EVENT_PKEY_P2 */
+ 27, /* 34 SONYPI_EVENT_PKEY_P3 */
+ 28, /* 35 SONYPI_EVENT_BACK_PRESSED */
+ -1, /* 36 SONYPI_EVENT_LID_CLOSED */
+ -1, /* 37 SONYPI_EVENT_LID_OPENED */
+ 29, /* 38 SONYPI_EVENT_BLUETOOTH_ON */
+ 30, /* 39 SONYPI_EVENT_BLUETOOTH_OFF */
+ 31, /* 40 SONYPI_EVENT_HELP_PRESSED */
+ 32, /* 41 SONYPI_EVENT_FNKEY_ONLY */
+ 33, /* 42 SONYPI_EVENT_JOGDIAL_FAST_DOWN */
+ 34, /* 43 SONYPI_EVENT_JOGDIAL_FAST_UP */
+ 35, /* 44 SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED */
+ 36, /* 45 SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED */
+ 37, /* 46 SONYPI_EVENT_JOGDIAL_VFAST_DOWN */
+ 38, /* 47 SONYPI_EVENT_JOGDIAL_VFAST_UP */
+ 39, /* 48 SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED */
+ 40, /* 49 SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED */
+ 41, /* 50 SONYPI_EVENT_ZOOM_PRESSED */
+ 42, /* 51 SONYPI_EVENT_THUMBPHRASE_PRESSED */
+ 43, /* 52 SONYPI_EVENT_MEYE_FACE */
+ 44, /* 53 SONYPI_EVENT_MEYE_OPPOSITE */
+ 45, /* 54 SONYPI_EVENT_MEMORYSTICK_INSERT */
+ 46, /* 55 SONYPI_EVENT_MEMORYSTICK_EJECT */
+ -1, /* 56 SONYPI_EVENT_ANYBUTTON_RELEASED */
+ -1, /* 57 SONYPI_EVENT_BATTERY_INSERT */
+ -1, /* 58 SONYPI_EVENT_BATTERY_REMOVE */
+ -1, /* 59 SONYPI_EVENT_FNKEY_RELEASED */
+ 47, /* 60 SONYPI_EVENT_WIRELESS_ON */
+ 48, /* 61 SONYPI_EVENT_WIRELESS_OFF */
+ 49, /* 62 SONYPI_EVENT_ZOOM_IN_PRESSED */
+ 50, /* 63 SONYPI_EVENT_ZOOM_OUT_PRESSED */
+ 51, /* 64 SONYPI_EVENT_CD_EJECT_PRESSED */
+ 52, /* 65 SONYPI_EVENT_MODEKEY_PRESSED */
+ 53, /* 66 SONYPI_EVENT_PKEY_P4 */
+ 54, /* 67 SONYPI_EVENT_PKEY_P5 */
+ 55, /* 68 SONYPI_EVENT_SETTINGKEY_PRESSED */
+ 56, /* 69 SONYPI_EVENT_VOLUME_INC_PRESSED */
+ 57, /* 70 SONYPI_EVENT_VOLUME_DEC_PRESSED */
+ -1, /* 71 SONYPI_EVENT_BRIGHTNESS_PRESSED */
+ 58, /* 72 SONYPI_EVENT_MEDIA_PRESSED */
+ 59, /* 72 SONYPI_EVENT_VENDOR_PRESSED */
+};
+
+static int sony_laptop_input_keycode_map[] = {
+ KEY_CAMERA, /* 0 SONYPI_EVENT_CAPTURE_PRESSED */
+ KEY_RESERVED, /* 1 SONYPI_EVENT_CAPTURE_RELEASED */
+ KEY_RESERVED, /* 2 SONYPI_EVENT_CAPTURE_PARTIALPRESSED */
+ KEY_RESERVED, /* 3 SONYPI_EVENT_CAPTURE_PARTIALRELEASED */
+ KEY_FN_ESC, /* 4 SONYPI_EVENT_FNKEY_ESC */
+ KEY_FN_F1, /* 5 SONYPI_EVENT_FNKEY_F1 */
+ KEY_FN_F2, /* 6 SONYPI_EVENT_FNKEY_F2 */
+ KEY_FN_F3, /* 7 SONYPI_EVENT_FNKEY_F3 */
+ KEY_FN_F4, /* 8 SONYPI_EVENT_FNKEY_F4 */
+ KEY_FN_F5, /* 9 SONYPI_EVENT_FNKEY_F5 */
+ KEY_FN_F6, /* 10 SONYPI_EVENT_FNKEY_F6 */
+ KEY_FN_F7, /* 11 SONYPI_EVENT_FNKEY_F7 */
+ KEY_FN_F8, /* 12 SONYPI_EVENT_FNKEY_F8 */
+ KEY_FN_F9, /* 13 SONYPI_EVENT_FNKEY_F9 */
+ KEY_FN_F10, /* 14 SONYPI_EVENT_FNKEY_F10 */
+ KEY_FN_F11, /* 15 SONYPI_EVENT_FNKEY_F11 */
+ KEY_FN_F12, /* 16 SONYPI_EVENT_FNKEY_F12 */
+ KEY_FN_1, /* 17 SONYPI_EVENT_FNKEY_1 */
+ KEY_FN_2, /* 18 SONYPI_EVENT_FNKEY_2 */
+ KEY_FN_D, /* 19 SONYPI_EVENT_FNKEY_D */
+ KEY_FN_E, /* 20 SONYPI_EVENT_FNKEY_E */
+ KEY_FN_F, /* 21 SONYPI_EVENT_FNKEY_F */
+ KEY_FN_S, /* 22 SONYPI_EVENT_FNKEY_S */
+ KEY_FN_B, /* 23 SONYPI_EVENT_FNKEY_B */
+ KEY_BLUETOOTH, /* 24 SONYPI_EVENT_BLUETOOTH_PRESSED */
+ KEY_PROG1, /* 25 SONYPI_EVENT_PKEY_P1 */
+ KEY_PROG2, /* 26 SONYPI_EVENT_PKEY_P2 */
+ KEY_PROG3, /* 27 SONYPI_EVENT_PKEY_P3 */
+ KEY_BACK, /* 28 SONYPI_EVENT_BACK_PRESSED */
+ KEY_BLUETOOTH, /* 29 SONYPI_EVENT_BLUETOOTH_ON */
+ KEY_BLUETOOTH, /* 30 SONYPI_EVENT_BLUETOOTH_OFF */
+ KEY_HELP, /* 31 SONYPI_EVENT_HELP_PRESSED */
+ KEY_FN, /* 32 SONYPI_EVENT_FNKEY_ONLY */
+ KEY_RESERVED, /* 33 SONYPI_EVENT_JOGDIAL_FAST_DOWN */
+ KEY_RESERVED, /* 34 SONYPI_EVENT_JOGDIAL_FAST_UP */
+ KEY_RESERVED, /* 35 SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED */
+ KEY_RESERVED, /* 36 SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED */
+ KEY_RESERVED, /* 37 SONYPI_EVENT_JOGDIAL_VFAST_DOWN */
+ KEY_RESERVED, /* 38 SONYPI_EVENT_JOGDIAL_VFAST_UP */
+ KEY_RESERVED, /* 39 SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED */
+ KEY_RESERVED, /* 40 SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED */
+ KEY_ZOOM, /* 41 SONYPI_EVENT_ZOOM_PRESSED */
+ BTN_THUMB, /* 42 SONYPI_EVENT_THUMBPHRASE_PRESSED */
+ KEY_RESERVED, /* 43 SONYPI_EVENT_MEYE_FACE */
+ KEY_RESERVED, /* 44 SONYPI_EVENT_MEYE_OPPOSITE */
+ KEY_RESERVED, /* 45 SONYPI_EVENT_MEMORYSTICK_INSERT */
+ KEY_RESERVED, /* 46 SONYPI_EVENT_MEMORYSTICK_EJECT */
+ KEY_WLAN, /* 47 SONYPI_EVENT_WIRELESS_ON */
+ KEY_WLAN, /* 48 SONYPI_EVENT_WIRELESS_OFF */
+ KEY_ZOOMIN, /* 49 SONYPI_EVENT_ZOOM_IN_PRESSED */
+ KEY_ZOOMOUT, /* 50 SONYPI_EVENT_ZOOM_OUT_PRESSED */
+ KEY_EJECTCD, /* 51 SONYPI_EVENT_CD_EJECT_PRESSED */
+ KEY_F13, /* 52 SONYPI_EVENT_MODEKEY_PRESSED */
+ KEY_PROG4, /* 53 SONYPI_EVENT_PKEY_P4 */
+ KEY_F14, /* 54 SONYPI_EVENT_PKEY_P5 */
+ KEY_F15, /* 55 SONYPI_EVENT_SETTINGKEY_PRESSED */
+ KEY_VOLUMEUP, /* 56 SONYPI_EVENT_VOLUME_INC_PRESSED */
+ KEY_VOLUMEDOWN, /* 57 SONYPI_EVENT_VOLUME_DEC_PRESSED */
+ KEY_MEDIA, /* 58 SONYPI_EVENT_MEDIA_PRESSED */
+ KEY_VENDOR, /* 59 SONYPI_EVENT_VENDOR_PRESSED */
+};
+
+/* release buttons after a short delay if pressed */
+static void do_sony_laptop_release_key(unsigned long unused)
+{
+ struct sony_laptop_keypress kp;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sony_laptop_input.fifo_lock, flags);
+
+ if (kfifo_out(&sony_laptop_input.fifo,
+ (unsigned char *)&kp, sizeof(kp)) == sizeof(kp)) {
+ input_report_key(kp.dev, kp.key, 0);
+ input_sync(kp.dev);
+ }
+
+ /* If there is something in the fifo schedule next release. */
+ if (kfifo_len(&sony_laptop_input.fifo) != 0)
+ mod_timer(&sony_laptop_input.release_key_timer,
+ jiffies + msecs_to_jiffies(10));
+
+ spin_unlock_irqrestore(&sony_laptop_input.fifo_lock, flags);
+}
+
+/* forward event to the input subsystem */
+static void sony_laptop_report_input_event(u8 event)
+{
+ struct input_dev *jog_dev = sony_laptop_input.jog_dev;
+ struct input_dev *key_dev = sony_laptop_input.key_dev;
+ struct sony_laptop_keypress kp = { NULL };
+ int scancode = -1;
+
+ if (event == SONYPI_EVENT_FNKEY_RELEASED ||
+ event == SONYPI_EVENT_ANYBUTTON_RELEASED) {
+ /* Nothing, not all VAIOs generate this event */
+ return;
+ }
+
+ /* report events */
+ switch (event) {
+ /* jog_dev events */
+ case SONYPI_EVENT_JOGDIAL_UP:
+ case SONYPI_EVENT_JOGDIAL_UP_PRESSED:
+ input_report_rel(jog_dev, REL_WHEEL, 1);
+ input_sync(jog_dev);
+ return;
+
+ case SONYPI_EVENT_JOGDIAL_DOWN:
+ case SONYPI_EVENT_JOGDIAL_DOWN_PRESSED:
+ input_report_rel(jog_dev, REL_WHEEL, -1);
+ input_sync(jog_dev);
+ return;
+
+ /* key_dev events */
+ case SONYPI_EVENT_JOGDIAL_PRESSED:
+ kp.key = BTN_MIDDLE;
+ kp.dev = jog_dev;
+ break;
+
+ default:
+ if (event >= ARRAY_SIZE(sony_laptop_input_index)) {
+ dprintk("sony_laptop_report_input_event, event not known: %d\n", event);
+ break;
+ }
+ if ((scancode = sony_laptop_input_index[event]) != -1) {
+ kp.key = sony_laptop_input_keycode_map[scancode];
+ if (kp.key != KEY_UNKNOWN)
+ kp.dev = key_dev;
+ }
+ break;
+ }
+
+ if (kp.dev) {
+ /* if we have a scancode we emit it so we can always
+ remap the key */
+ if (scancode != -1)
+ input_event(kp.dev, EV_MSC, MSC_SCAN, scancode);
+ input_report_key(kp.dev, kp.key, 1);
+ input_sync(kp.dev);
+
+ /* schedule key release */
+ kfifo_in_locked(&sony_laptop_input.fifo,
+ (unsigned char *)&kp, sizeof(kp),
+ &sony_laptop_input.fifo_lock);
+ mod_timer(&sony_laptop_input.release_key_timer,
+ jiffies + msecs_to_jiffies(10));
+ } else
+ dprintk("unknown input event %.2x\n", event);
+}
+
+static int sony_laptop_setup_input(struct acpi_device *acpi_device)
+{
+ struct input_dev *jog_dev;
+ struct input_dev *key_dev;
+ int i;
+ int error;
+
+ /* don't run again if already initialized */
+ if (atomic_add_return(1, &sony_laptop_input.users) > 1)
+ return 0;
+
+ /* kfifo */
+ spin_lock_init(&sony_laptop_input.fifo_lock);
+ error = kfifo_alloc(&sony_laptop_input.fifo,
+ SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
+ if (error) {
+ pr_err("kfifo_alloc failed\n");
+ goto err_dec_users;
+ }
+
+ setup_timer(&sony_laptop_input.release_key_timer,
+ do_sony_laptop_release_key, 0);
+
+ /* input keys */
+ key_dev = input_allocate_device();
+ if (!key_dev) {
+ error = -ENOMEM;
+ goto err_free_kfifo;
+ }
+
+ key_dev->name = "Sony Vaio Keys";
+ key_dev->id.bustype = BUS_ISA;
+ key_dev->id.vendor = PCI_VENDOR_ID_SONY;
+ key_dev->dev.parent = &acpi_device->dev;
+
+ /* Initialize the Input Drivers: special keys */
+ input_set_capability(key_dev, EV_MSC, MSC_SCAN);
+
+ __set_bit(EV_KEY, key_dev->evbit);
+ key_dev->keycodesize = sizeof(sony_laptop_input_keycode_map[0]);
+ key_dev->keycodemax = ARRAY_SIZE(sony_laptop_input_keycode_map);
+ key_dev->keycode = &sony_laptop_input_keycode_map;
+ for (i = 0; i < ARRAY_SIZE(sony_laptop_input_keycode_map); i++)
+ __set_bit(sony_laptop_input_keycode_map[i], key_dev->keybit);
+ __clear_bit(KEY_RESERVED, key_dev->keybit);
+
+ error = input_register_device(key_dev);
+ if (error)
+ goto err_free_keydev;
+
+ sony_laptop_input.key_dev = key_dev;
+
+ /* jogdial */
+ jog_dev = input_allocate_device();
+ if (!jog_dev) {
+ error = -ENOMEM;
+ goto err_unregister_keydev;
+ }
+
+ jog_dev->name = "Sony Vaio Jogdial";
+ jog_dev->id.bustype = BUS_ISA;
+ jog_dev->id.vendor = PCI_VENDOR_ID_SONY;
+ jog_dev->dev.parent = &acpi_device->dev;
+
+ input_set_capability(jog_dev, EV_KEY, BTN_MIDDLE);
+ input_set_capability(jog_dev, EV_REL, REL_WHEEL);
+
+ error = input_register_device(jog_dev);
+ if (error)
+ goto err_free_jogdev;
+
+ sony_laptop_input.jog_dev = jog_dev;
+
+ return 0;
+
+err_free_jogdev:
+ input_free_device(jog_dev);
+
+err_unregister_keydev:
+ input_unregister_device(key_dev);
+ /* to avoid kref underflow below at input_free_device */
+ key_dev = NULL;
+
+err_free_keydev:
+ input_free_device(key_dev);
+
+err_free_kfifo:
+ kfifo_free(&sony_laptop_input.fifo);
+
+err_dec_users:
+ atomic_dec(&sony_laptop_input.users);
+ return error;
+}
+
+static void sony_laptop_remove_input(void)
+{
+ struct sony_laptop_keypress kp = { NULL };
+
+ /* Cleanup only after the last user has gone */
+ if (!atomic_dec_and_test(&sony_laptop_input.users))
+ return;
+
+ del_timer_sync(&sony_laptop_input.release_key_timer);
+
+ /*
+ * Generate key-up events for remaining keys. Note that we don't
+ * need locking since nobody is adding new events to the kfifo.
+ */
+ while (kfifo_out(&sony_laptop_input.fifo,
+ (unsigned char *)&kp, sizeof(kp)) == sizeof(kp)) {
+ input_report_key(kp.dev, kp.key, 0);
+ input_sync(kp.dev);
+ }
+
+ /* destroy input devs */
+ input_unregister_device(sony_laptop_input.key_dev);
+ sony_laptop_input.key_dev = NULL;
+
+ if (sony_laptop_input.jog_dev) {
+ input_unregister_device(sony_laptop_input.jog_dev);
+ sony_laptop_input.jog_dev = NULL;
+ }
+
+ kfifo_free(&sony_laptop_input.fifo);
+}
+
+/*********** Platform Device ***********/
+
+static atomic_t sony_pf_users = ATOMIC_INIT(0);
+static struct platform_driver sony_pf_driver = {
+ .driver = {
+ .name = "sony-laptop",
+ }
+};
+static struct platform_device *sony_pf_device;
+
+static int sony_pf_add(void)
+{
+ int ret = 0;
+
+ /* don't run again if already initialized */
+ if (atomic_add_return(1, &sony_pf_users) > 1)
+ return 0;
+
+ ret = platform_driver_register(&sony_pf_driver);
+ if (ret)
+ goto out;
+
+ sony_pf_device = platform_device_alloc("sony-laptop", -1);
+ if (!sony_pf_device) {
+ ret = -ENOMEM;
+ goto out_platform_registered;
+ }
+
+ ret = platform_device_add(sony_pf_device);
+ if (ret)
+ goto out_platform_alloced;
+
+ return 0;
+
+ out_platform_alloced:
+ platform_device_put(sony_pf_device);
+ sony_pf_device = NULL;
+ out_platform_registered:
+ platform_driver_unregister(&sony_pf_driver);
+ out:
+ atomic_dec(&sony_pf_users);
+ return ret;
+}
+
+static void sony_pf_remove(void)
+{
+ /* deregister only after the last user has gone */
+ if (!atomic_dec_and_test(&sony_pf_users))
+ return;
+
+ platform_device_unregister(sony_pf_device);
+ platform_driver_unregister(&sony_pf_driver);
+}
+
+/*********** SNC (SNY5001) Device ***********/
+
+/* the device uses 1-based values, while the backlight subsystem uses
+ 0-based values */
+#define SONY_MAX_BRIGHTNESS 8
+
+#define SNC_VALIDATE_IN 0
+#define SNC_VALIDATE_OUT 1
+
+static ssize_t sony_nc_sysfs_show(struct device *, struct device_attribute *,
+ char *);
+static ssize_t sony_nc_sysfs_store(struct device *, struct device_attribute *,
+ const char *, size_t);
+static int boolean_validate(const int, const int);
+static int brightness_default_validate(const int, const int);
+
+struct sony_nc_value {
+ char *name; /* name of the entry */
+ char **acpiget; /* names of the ACPI get function */
+ char **acpiset; /* names of the ACPI set function */
+ int (*validate)(const int, const int); /* input/output validation */
+ int value; /* current setting */
+ int valid; /* Has ever been set */
+ int debug; /* active only in debug mode ? */
+ struct device_attribute devattr; /* sysfs attribute */
+};
+
+#define SNC_HANDLE_NAMES(_name, _values...) \
+ static char *snc_##_name[] = { _values, NULL }
+
+#define SNC_HANDLE(_name, _getters, _setters, _validate, _debug) \
+ { \
+ .name = __stringify(_name), \
+ .acpiget = _getters, \
+ .acpiset = _setters, \
+ .validate = _validate, \
+ .debug = _debug, \
+ .devattr = __ATTR(_name, 0, sony_nc_sysfs_show, sony_nc_sysfs_store), \
+ }
+
+#define SNC_HANDLE_NULL { .name = NULL }
+
+SNC_HANDLE_NAMES(fnkey_get, "GHKE");
+
+SNC_HANDLE_NAMES(brightness_def_get, "GPBR");
+SNC_HANDLE_NAMES(brightness_def_set, "SPBR");
+
+SNC_HANDLE_NAMES(cdpower_get, "GCDP");
+SNC_HANDLE_NAMES(cdpower_set, "SCDP", "CDPW");
+
+SNC_HANDLE_NAMES(audiopower_get, "GAZP");
+SNC_HANDLE_NAMES(audiopower_set, "AZPW");
+
+SNC_HANDLE_NAMES(lanpower_get, "GLNP");
+SNC_HANDLE_NAMES(lanpower_set, "LNPW");
+
+SNC_HANDLE_NAMES(lidstate_get, "GLID");
+
+SNC_HANDLE_NAMES(indicatorlamp_get, "GILS");
+SNC_HANDLE_NAMES(indicatorlamp_set, "SILS");
+
+SNC_HANDLE_NAMES(gainbass_get, "GMGB");
+SNC_HANDLE_NAMES(gainbass_set, "CMGB");
+
+SNC_HANDLE_NAMES(PID_get, "GPID");
+
+SNC_HANDLE_NAMES(CTR_get, "GCTR");
+SNC_HANDLE_NAMES(CTR_set, "SCTR");
+
+SNC_HANDLE_NAMES(PCR_get, "GPCR");
+SNC_HANDLE_NAMES(PCR_set, "SPCR");
+
+SNC_HANDLE_NAMES(CMI_get, "GCMI");
+SNC_HANDLE_NAMES(CMI_set, "SCMI");
+
+static struct sony_nc_value sony_nc_values[] = {
+ SNC_HANDLE(brightness_default, snc_brightness_def_get,
+ snc_brightness_def_set, brightness_default_validate, 0),
+ SNC_HANDLE(fnkey, snc_fnkey_get, NULL, NULL, 0),
+ SNC_HANDLE(cdpower, snc_cdpower_get, snc_cdpower_set, boolean_validate, 0),
+ SNC_HANDLE(audiopower, snc_audiopower_get, snc_audiopower_set,
+ boolean_validate, 0),
+ SNC_HANDLE(lanpower, snc_lanpower_get, snc_lanpower_set,
+ boolean_validate, 1),
+ SNC_HANDLE(lidstate, snc_lidstate_get, NULL,
+ boolean_validate, 0),
+ SNC_HANDLE(indicatorlamp, snc_indicatorlamp_get, snc_indicatorlamp_set,
+ boolean_validate, 0),
+ SNC_HANDLE(gainbass, snc_gainbass_get, snc_gainbass_set,
+ boolean_validate, 0),
+ /* unknown methods */
+ SNC_HANDLE(PID, snc_PID_get, NULL, NULL, 1),
+ SNC_HANDLE(CTR, snc_CTR_get, snc_CTR_set, NULL, 1),
+ SNC_HANDLE(PCR, snc_PCR_get, snc_PCR_set, NULL, 1),
+ SNC_HANDLE(CMI, snc_CMI_get, snc_CMI_set, NULL, 1),
+ SNC_HANDLE_NULL
+};
+
+static acpi_handle sony_nc_acpi_handle;
+static struct acpi_device *sony_nc_acpi_device = NULL;
+
+/*
+ * acpi_evaluate_object wrappers
+ * all useful calls into SNC methods take one or zero parameters and return
+ * integers or arrays.
+ */
+static union acpi_object *__call_snc_method(acpi_handle handle, char *method,
+ u64 *value)
+{
+ union acpi_object *result = NULL;
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ acpi_status status;
+
+ if (value) {
+ struct acpi_object_list params;
+ union acpi_object in;
+ in.type = ACPI_TYPE_INTEGER;
+ in.integer.value = *value;
+ params.count = 1;
+ params.pointer = &in;
+ status = acpi_evaluate_object(handle, method, &params, &output);
+ dprintk("__call_snc_method: [%s:0x%.8x%.8x]\n", method,
+ (unsigned int)(*value >> 32),
+ (unsigned int)*value & 0xffffffff);
+ } else {
+ status = acpi_evaluate_object(handle, method, NULL, &output);
+ dprintk("__call_snc_method: [%s]\n", method);
+ }
+
+ if (ACPI_FAILURE(status)) {
+ pr_err("Failed to evaluate [%s]\n", method);
+ return NULL;
+ }
+
+ result = (union acpi_object *) output.pointer;
+ if (!result)
+ dprintk("No return object [%s]\n", method);
+
+ return result;
+}
+
+static int sony_nc_int_call(acpi_handle handle, char *name, int *value,
+ int *result)
+{
+ union acpi_object *object = NULL;
+ if (value) {
+ u64 v = *value;
+ object = __call_snc_method(handle, name, &v);
+ } else
+ object = __call_snc_method(handle, name, NULL);
+
+ if (!object)
+ return -EINVAL;
+
+ if (object->type != ACPI_TYPE_INTEGER) {
+ pr_warn("Invalid acpi_object: expected 0x%x got 0x%x\n",
+ ACPI_TYPE_INTEGER, object->type);
+ kfree(object);
+ return -EINVAL;
+ }
+
+ if (result)
+ *result = object->integer.value;
+
+ kfree(object);
+ return 0;
+}
+
+#define MIN(a, b) (a > b ? b : a)
+static int sony_nc_buffer_call(acpi_handle handle, char *name, u64 *value,
+ void *buffer, size_t buflen)
+{
+ int ret = 0;
+ size_t len;
+ union acpi_object *object = __call_snc_method(handle, name, value);
+
+ if (!object)
+ return -EINVAL;
+
+ if (object->type == ACPI_TYPE_BUFFER) {
+ len = MIN(buflen, object->buffer.length);
+ memcpy(buffer, object->buffer.pointer, len);
+
+ } else if (object->type == ACPI_TYPE_INTEGER) {
+ len = MIN(buflen, sizeof(object->integer.value));
+ memcpy(buffer, &object->integer.value, len);
+
+ } else {
+ pr_warn("Invalid acpi_object: expected 0x%x got 0x%x\n",
+ ACPI_TYPE_BUFFER, object->type);
+ ret = -EINVAL;
+ }
+
+ kfree(object);
+ return ret;
+}
+
+struct sony_nc_handles {
+ u16 cap[0x10];
+ struct device_attribute devattr;
+};
+
+static struct sony_nc_handles *handles;
+
+static ssize_t sony_nc_handles_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ ssize_t len = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
+ len += snprintf(buffer + len, PAGE_SIZE - len, "0x%.4x ",
+ handles->cap[i]);
+ }
+ len += snprintf(buffer + len, PAGE_SIZE - len, "\n");
+
+ return len;
+}
+
+static int sony_nc_handles_setup(struct platform_device *pd)
+{
+ int i, r, result, arg;
+
+ handles = kzalloc(sizeof(*handles), GFP_KERNEL);
+ if (!handles)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
+ arg = i + 0x20;
+ r = sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg,
+ &result);
+ if (!r) {
+ dprintk("caching handle 0x%.4x (offset: 0x%.2x)\n",
+ result, i);
+ handles->cap[i] = result;
+ }
+ }
+
+ if (debug) {
+ sysfs_attr_init(&handles->devattr.attr);
+ handles->devattr.attr.name = "handles";
+ handles->devattr.attr.mode = S_IRUGO;
+ handles->devattr.show = sony_nc_handles_show;
+
+ /* allow reading capabilities via sysfs */
+ if (device_create_file(&pd->dev, &handles->devattr)) {
+ kfree(handles);
+ handles = NULL;
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int sony_nc_handles_cleanup(struct platform_device *pd)
+{
+ if (handles) {
+ if (debug)
+ device_remove_file(&pd->dev, &handles->devattr);
+ kfree(handles);
+ handles = NULL;
+ }
+ return 0;
+}
+
+static int sony_find_snc_handle(int handle)
+{
+ int i;
+
+ /* not initialized yet, return early */
+ if (!handles || !handle)
+ return -EINVAL;
+
+ for (i = 0; i < 0x10; i++) {
+ if (handles->cap[i] == handle) {
+ dprintk("found handle 0x%.4x (offset: 0x%.2x)\n",
+ handle, i);
+ return i;
+ }
+ }
+ dprintk("handle 0x%.4x not found\n", handle);
+ return -EINVAL;
+}
+
+static int sony_call_snc_handle(int handle, int argument, int *result)
+{
+ int arg, ret = 0;
+ int offset = sony_find_snc_handle(handle);
+
+ if (offset < 0)
+ return offset;
+
+ arg = offset | argument;
+ ret = sony_nc_int_call(sony_nc_acpi_handle, "SN07", &arg, result);
+ dprintk("called SN07 with 0x%.4x (result: 0x%.4x)\n", arg, *result);
+ return ret;
+}
+
+/*
+ * sony_nc_values input/output validate functions
+ */
+
+/* brightness_default_validate:
+ *
+ * manipulate input output values to keep consistency with the
+ * backlight framework for which brightness values are 0-based.
+ */
+static int brightness_default_validate(const int direction, const int value)
+{
+ switch (direction) {
+ case SNC_VALIDATE_OUT:
+ return value - 1;
+ case SNC_VALIDATE_IN:
+ if (value >= 0 && value < SONY_MAX_BRIGHTNESS)
+ return value + 1;
+ }
+ return -EINVAL;
+}
+
+/* boolean_validate:
+ *
+ * on input validate boolean values 0/1, on output just pass the
+ * received value.
+ */
+static int boolean_validate(const int direction, const int value)
+{
+ if (direction == SNC_VALIDATE_IN) {
+ if (value != 0 && value != 1)
+ return -EINVAL;
+ }
+ return value;
+}
+
+/*
+ * Sysfs show/store common to all sony_nc_values
+ */
+static ssize_t sony_nc_sysfs_show(struct device *dev, struct device_attribute *attr,
+ char *buffer)
+{
+ int value, ret = 0;
+ struct sony_nc_value *item =
+ container_of(attr, struct sony_nc_value, devattr);
+
+ if (!*item->acpiget)
+ return -EIO;
+
+ ret = sony_nc_int_call(sony_nc_acpi_handle, *item->acpiget, NULL,
+ &value);
+ if (ret < 0)
+ return -EIO;
+
+ if (item->validate)
+ value = item->validate(SNC_VALIDATE_OUT, value);
+
+ return snprintf(buffer, PAGE_SIZE, "%d\n", value);
+}
+
+static ssize_t sony_nc_sysfs_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ int value;
+ int ret = 0;
+ struct sony_nc_value *item =
+ container_of(attr, struct sony_nc_value, devattr);
+
+ if (!item->acpiset)
+ return -EIO;
+
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoint(buffer, 10, &value))
+ return -EINVAL;
+
+ if (item->validate)
+ value = item->validate(SNC_VALIDATE_IN, value);
+
+ if (value < 0)
+ return value;
+
+ ret = sony_nc_int_call(sony_nc_acpi_handle, *item->acpiset,
+ &value, NULL);
+ if (ret < 0)
+ return -EIO;
+
+ item->value = value;
+ item->valid = 1;
+ return count;
+}
+
+
+/*
+ * Backlight device
+ */
+struct sony_backlight_props {
+ struct backlight_device *dev;
+ int handle;
+ int cmd_base;
+ u8 offset;
+ u8 maxlvl;
+};
+static struct sony_backlight_props sony_bl_props;
+
+static int sony_backlight_update_status(struct backlight_device *bd)
+{
+ int arg = bd->props.brightness + 1;
+ return sony_nc_int_call(sony_nc_acpi_handle, "SBRT", &arg, NULL);
+}
+
+static int sony_backlight_get_brightness(struct backlight_device *bd)
+{
+ int value;
+
+ if (sony_nc_int_call(sony_nc_acpi_handle, "GBRT", NULL, &value))
+ return 0;
+ /* brightness levels are 1-based, while backlight ones are 0-based */
+ return value - 1;
+}
+
+static int sony_nc_get_brightness_ng(struct backlight_device *bd)
+{
+ int result;
+ struct sony_backlight_props *sdev =
+ (struct sony_backlight_props *)bl_get_data(bd);
+
+ sony_call_snc_handle(sdev->handle, sdev->cmd_base + 0x100, &result);
+
+ return (result & 0xff) - sdev->offset;
+}
+
+static int sony_nc_update_status_ng(struct backlight_device *bd)
+{
+ int value, result;
+ struct sony_backlight_props *sdev =
+ (struct sony_backlight_props *)bl_get_data(bd);
+
+ value = bd->props.brightness + sdev->offset;
+ if (sony_call_snc_handle(sdev->handle, sdev->cmd_base | (value << 0x10),
+ &result))
+ return -EIO;
+
+ return value;
+}
+
+static const struct backlight_ops sony_backlight_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .update_status = sony_backlight_update_status,
+ .get_brightness = sony_backlight_get_brightness,
+};
+static const struct backlight_ops sony_backlight_ng_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .update_status = sony_nc_update_status_ng,
+ .get_brightness = sony_nc_get_brightness_ng,
+};
+
+/*
+ * New SNC-only Vaios event mapping to driver known keys
+ */
+struct sony_nc_event {
+ u8 data;
+ u8 event;
+};
+
+static struct sony_nc_event sony_100_events[] = {
+ { 0x90, SONYPI_EVENT_PKEY_P1 },
+ { 0x10, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0x91, SONYPI_EVENT_PKEY_P2 },
+ { 0x11, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0x81, SONYPI_EVENT_FNKEY_F1 },
+ { 0x01, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x82, SONYPI_EVENT_FNKEY_F2 },
+ { 0x02, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x83, SONYPI_EVENT_FNKEY_F3 },
+ { 0x03, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x84, SONYPI_EVENT_FNKEY_F4 },
+ { 0x04, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x85, SONYPI_EVENT_FNKEY_F5 },
+ { 0x05, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x86, SONYPI_EVENT_FNKEY_F6 },
+ { 0x06, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x87, SONYPI_EVENT_FNKEY_F7 },
+ { 0x07, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x88, SONYPI_EVENT_FNKEY_F8 },
+ { 0x08, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x89, SONYPI_EVENT_FNKEY_F9 },
+ { 0x09, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x8A, SONYPI_EVENT_FNKEY_F10 },
+ { 0x0A, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x8B, SONYPI_EVENT_FNKEY_F11 },
+ { 0x0B, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x8C, SONYPI_EVENT_FNKEY_F12 },
+ { 0x0C, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x9d, SONYPI_EVENT_ZOOM_PRESSED },
+ { 0x1d, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0x9f, SONYPI_EVENT_CD_EJECT_PRESSED },
+ { 0x1f, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0xa1, SONYPI_EVENT_MEDIA_PRESSED },
+ { 0x21, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0xa4, SONYPI_EVENT_CD_EJECT_PRESSED },
+ { 0x24, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0xa5, SONYPI_EVENT_VENDOR_PRESSED },
+ { 0x25, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0xa6, SONYPI_EVENT_HELP_PRESSED },
+ { 0x26, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0xa8, SONYPI_EVENT_FNKEY_1 },
+ { 0x28, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0, 0 },
+};
+
+static struct sony_nc_event sony_127_events[] = {
+ { 0x81, SONYPI_EVENT_MODEKEY_PRESSED },
+ { 0x01, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0x82, SONYPI_EVENT_PKEY_P1 },
+ { 0x02, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0x83, SONYPI_EVENT_PKEY_P2 },
+ { 0x03, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0x84, SONYPI_EVENT_PKEY_P3 },
+ { 0x04, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0x85, SONYPI_EVENT_PKEY_P4 },
+ { 0x05, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0x86, SONYPI_EVENT_PKEY_P5 },
+ { 0x06, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0x87, SONYPI_EVENT_SETTINGKEY_PRESSED },
+ { 0x07, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0, 0 },
+};
+
+static int sony_nc_hotkeys_decode(u32 event, unsigned int handle)
+{
+ int ret = -EINVAL;
+ unsigned int result = 0;
+ struct sony_nc_event *key_event;
+
+ if (sony_call_snc_handle(handle, 0x200, &result)) {
+ dprintk("Unable to decode event 0x%.2x 0x%.2x\n", handle,
+ event);
+ return -EINVAL;
+ }
+
+ result &= 0xFF;
+
+ if (handle == 0x0100)
+ key_event = sony_100_events;
+ else
+ key_event = sony_127_events;
+
+ for (; key_event->data; key_event++) {
+ if (key_event->data == result) {
+ ret = key_event->event;
+ break;
+ }
+ }
+
+ if (!key_event->data)
+ pr_info("Unknown hotkey 0x%.2x/0x%.2x (handle 0x%.2x)\n",
+ event, result, handle);
+
+ return ret;
+}
+
+/*
+ * ACPI callbacks
+ */
+enum event_types {
+ HOTKEY = 1,
+ KILLSWITCH,
+ GFX_SWITCH
+};
+static void sony_nc_notify(struct acpi_device *device, u32 event)
+{
+ u32 real_ev = event;
+ u8 ev_type = 0;
+ dprintk("sony_nc_notify, event: 0x%.2x\n", event);
+
+ if (event >= 0x90) {
+ unsigned int result = 0;
+ unsigned int arg = 0;
+ unsigned int handle = 0;
+ unsigned int offset = event - 0x90;
+
+ if (offset >= ARRAY_SIZE(handles->cap)) {
+ pr_err("Event 0x%x outside of capabilities list\n",
+ event);
+ return;
+ }
+ handle = handles->cap[offset];
+
+ /* list of handles known for generating events */
+ switch (handle) {
+ /* hotkey event */
+ case 0x0100:
+ case 0x0127:
+ ev_type = HOTKEY;
+ real_ev = sony_nc_hotkeys_decode(event, handle);
+
+ if (real_ev > 0)
+ sony_laptop_report_input_event(real_ev);
+ else
+ /* restore the original event for reporting */
+ real_ev = event;
+
+ break;
+
+ /* wlan switch */
+ case 0x0124:
+ case 0x0135:
+ /* events on this handle are reported when the
+ * switch changes position or for battery
+ * events. We'll notify both of them but only
+ * update the rfkill device status when the
+ * switch is moved.
+ */
+ ev_type = KILLSWITCH;
+ sony_call_snc_handle(handle, 0x0100, &result);
+ real_ev = result & 0x03;
+
+ /* hw switch event */
+ if (real_ev == 1)
+ sony_nc_rfkill_update();
+
+ break;
+
+ case 0x0128:
+ case 0x0146:
+ /* Hybrid GFX switching */
+ sony_call_snc_handle(handle, 0x0000, &result);
+ dprintk("GFX switch event received (reason: %s)\n",
+ (result == 0x1) ? "switch change" :
+ (result == 0x2) ? "output switch" :
+ (result == 0x3) ? "output switch" :
+ "");
+
+ ev_type = GFX_SWITCH;
+ real_ev = __sony_nc_gfx_switch_status_get();
+ break;
+
+ case 0x015B:
+ /* Hybrid GFX switching SVS151290S */
+ ev_type = GFX_SWITCH;
+ real_ev = __sony_nc_gfx_switch_status_get();
+ break;
+ default:
+ dprintk("Unknown event 0x%x for handle 0x%x\n",
+ event, handle);
+ break;
+ }
+
+ /* clear the event (and the event reason when present) */
+ arg = 1 << offset;
+ sony_nc_int_call(sony_nc_acpi_handle, "SN05", &arg, &result);
+
+ } else {
+ /* old style event */
+ ev_type = HOTKEY;
+ sony_laptop_report_input_event(real_ev);
+ }
+ acpi_bus_generate_netlink_event(sony_nc_acpi_device->pnp.device_class,
+ dev_name(&sony_nc_acpi_device->dev), ev_type, real_ev);
+}
+
+static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
+ void *context, void **return_value)
+{
+ struct acpi_device_info *info;
+
+ if (ACPI_SUCCESS(acpi_get_object_info(handle, &info))) {
+ pr_warn("method: name: %4.4s, args %X\n",
+ (char *)&info->name, info->param_count);
+
+ kfree(info);
+ }
+
+ return AE_OK;
+}
+
+/*
+ * ACPI device
+ */
+static void sony_nc_function_setup(struct acpi_device *device,
+ struct platform_device *pf_device)
+{
+ unsigned int i, result, bitmask, arg;
+
+ if (!handles)
+ return;
+
+ /* setup found handles here */
+ for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
+ unsigned int handle = handles->cap[i];
+
+ if (!handle)
+ continue;
+
+ dprintk("setting up handle 0x%.4x\n", handle);
+
+ switch (handle) {
+ case 0x0100:
+ case 0x0101:
+ case 0x0127:
+ /* setup hotkeys */
+ sony_call_snc_handle(handle, 0, &result);
+ break;
+ case 0x0102:
+ /* setup hotkeys */
+ sony_call_snc_handle(handle, 0x100, &result);
+ break;
+ case 0x0105:
+ case 0x0148:
+ /* touchpad enable/disable */
+ result = sony_nc_touchpad_setup(pf_device, handle);
+ if (result)
+ pr_err("couldn't set up touchpad control function (%d)\n",
+ result);
+ break;
+ case 0x0115:
+ case 0x0136:
+ case 0x013f:
+ result = sony_nc_battery_care_setup(pf_device, handle);
+ if (result)
+ pr_err("couldn't set up battery care function (%d)\n",
+ result);
+ break;
+ case 0x0119:
+ case 0x015D:
+ result = sony_nc_lid_resume_setup(pf_device, handle);
+ if (result)
+ pr_err("couldn't set up lid resume function (%d)\n",
+ result);
+ break;
+ case 0x0122:
+ result = sony_nc_thermal_setup(pf_device);
+ if (result)
+ pr_err("couldn't set up thermal profile function (%d)\n",
+ result);
+ break;
+ case 0x0128:
+ case 0x0146:
+ case 0x015B:
+ result = sony_nc_gfx_switch_setup(pf_device, handle);
+ if (result)
+ pr_err("couldn't set up GFX Switch status (%d)\n",
+ result);
+ break;
+ case 0x0131:
+ result = sony_nc_highspeed_charging_setup(pf_device);
+ if (result)
+ pr_err("couldn't set up high speed charging function (%d)\n",
+ result);
+ break;
+ case 0x0124:
+ case 0x0135:
+ result = sony_nc_rfkill_setup(device, handle);
+ if (result)
+ pr_err("couldn't set up rfkill support (%d)\n",
+ result);
+ break;
+ case 0x0137:
+ case 0x0143:
+ case 0x014b:
+ case 0x014c:
+ case 0x0163:
+ result = sony_nc_kbd_backlight_setup(pf_device, handle);
+ if (result)
+ pr_err("couldn't set up keyboard backlight function (%d)\n",
+ result);
+ break;
+ case 0x0121:
+ result = sony_nc_lowbatt_setup(pf_device);
+ if (result)
+ pr_err("couldn't set up low battery function (%d)\n",
+ result);
+ break;
+ case 0x0149:
+ result = sony_nc_fanspeed_setup(pf_device);
+ if (result)
+ pr_err("couldn't set up fan speed function (%d)\n",
+ result);
+ break;
+ case 0x0155:
+ result = sony_nc_usb_charge_setup(pf_device);
+ if (result)
+ pr_err("couldn't set up USB charge support (%d)\n",
+ result);
+ break;
+ case 0x011D:
+ result = sony_nc_panelid_setup(pf_device);
+ if (result)
+ pr_err("couldn't set up panel ID function (%d)\n",
+ result);
+ break;
+ case 0x0168:
+ result = sony_nc_smart_conn_setup(pf_device);
+ if (result)
+ pr_err("couldn't set up smart connect support (%d)\n",
+ result);
+ break;
+ default:
+ continue;
+ }
+ }
+
+ /* Enable all events */
+ arg = 0x10;
+ if (!sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg, &bitmask))
+ sony_nc_int_call(sony_nc_acpi_handle, "SN02", &bitmask,
+ &result);
+}
+
+static void sony_nc_function_cleanup(struct platform_device *pd)
+{
+ unsigned int i, result, bitmask, handle;
+
+ /* get enabled events and disable them */
+ sony_nc_int_call(sony_nc_acpi_handle, "SN01", NULL, &bitmask);
+ sony_nc_int_call(sony_nc_acpi_handle, "SN03", &bitmask, &result);
+
+ /* cleanup handles here */
+ for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
+
+ handle = handles->cap[i];
+
+ if (!handle)
+ continue;
+
+ switch (handle) {
+ case 0x0105:
+ case 0x0148:
+ sony_nc_touchpad_cleanup(pd);
+ break;
+ case 0x0115:
+ case 0x0136:
+ case 0x013f:
+ sony_nc_battery_care_cleanup(pd);
+ break;
+ case 0x0119:
+ case 0x015D:
+ sony_nc_lid_resume_cleanup(pd);
+ break;
+ case 0x0122:
+ sony_nc_thermal_cleanup(pd);
+ break;
+ case 0x0128:
+ case 0x0146:
+ case 0x015B:
+ sony_nc_gfx_switch_cleanup(pd);
+ break;
+ case 0x0131:
+ sony_nc_highspeed_charging_cleanup(pd);
+ break;
+ case 0x0124:
+ case 0x0135:
+ sony_nc_rfkill_cleanup();
+ break;
+ case 0x0137:
+ case 0x0143:
+ case 0x014b:
+ case 0x014c:
+ case 0x0163:
+ sony_nc_kbd_backlight_cleanup(pd, handle);
+ break;
+ case 0x0121:
+ sony_nc_lowbatt_cleanup(pd);
+ break;
+ case 0x0149:
+ sony_nc_fanspeed_cleanup(pd);
+ break;
+ case 0x0155:
+ sony_nc_usb_charge_cleanup(pd);
+ break;
+ case 0x011D:
+ sony_nc_panelid_cleanup(pd);
+ break;
+ case 0x0168:
+ sony_nc_smart_conn_cleanup(pd);
+ break;
+ default:
+ continue;
+ }
+ }
+
+ /* finally cleanup the handles list */
+ sony_nc_handles_cleanup(pd);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static void sony_nc_function_resume(void)
+{
+ unsigned int i, result, bitmask, arg;
+
+ dprintk("Resuming SNC device\n");
+
+ for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
+ unsigned int handle = handles->cap[i];
+
+ if (!handle)
+ continue;
+
+ switch (handle) {
+ case 0x0100:
+ case 0x0101:
+ case 0x0127:
+ /* re-enable hotkeys */
+ sony_call_snc_handle(handle, 0, &result);
+ break;
+ case 0x0102:
+ /* re-enable hotkeys */
+ sony_call_snc_handle(handle, 0x100, &result);
+ break;
+ case 0x0122:
+ sony_nc_thermal_resume();
+ break;
+ case 0x0124:
+ case 0x0135:
+ sony_nc_rfkill_update();
+ break;
+ default:
+ continue;
+ }
+ }
+
+ /* Enable all events */
+ arg = 0x10;
+ if (!sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg, &bitmask))
+ sony_nc_int_call(sony_nc_acpi_handle, "SN02", &bitmask,
+ &result);
+}
+
+static int sony_nc_resume(struct device *dev)
+{
+ struct sony_nc_value *item;
+
+ for (item = sony_nc_values; item->name; item++) {
+ int ret;
+
+ if (!item->valid)
+ continue;
+ ret = sony_nc_int_call(sony_nc_acpi_handle, *item->acpiset,
+ &item->value, NULL);
+ if (ret < 0) {
+ pr_err("%s: %d\n", __func__, ret);
+ break;
+ }
+ }
+
+ if (acpi_has_method(sony_nc_acpi_handle, "ECON")) {
+ int arg = 1;
+ if (sony_nc_int_call(sony_nc_acpi_handle, "ECON", &arg, NULL))
+ dprintk("ECON Method failed\n");
+ }
+
+ if (acpi_has_method(sony_nc_acpi_handle, "SN00"))
+ sony_nc_function_resume();
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(sony_nc_pm, NULL, sony_nc_resume);
+
+static void sony_nc_rfkill_cleanup(void)
+{
+ int i;
+
+ for (i = 0; i < N_SONY_RFKILL; i++) {
+ if (sony_rfkill_devices[i]) {
+ rfkill_unregister(sony_rfkill_devices[i]);
+ rfkill_destroy(sony_rfkill_devices[i]);
+ }
+ }
+}
+
+static int sony_nc_rfkill_set(void *data, bool blocked)
+{
+ int result;
+ int argument = sony_rfkill_address[(long) data] + 0x100;
+
+ if (!blocked)
+ argument |= 0x070000;
+
+ return sony_call_snc_handle(sony_rfkill_handle, argument, &result);
+}
+
+static const struct rfkill_ops sony_rfkill_ops = {
+ .set_block = sony_nc_rfkill_set,
+};
+
+static int sony_nc_setup_rfkill(struct acpi_device *device,
+ enum sony_nc_rfkill nc_type)
+{
+ int err = 0;
+ struct rfkill *rfk;
+ enum rfkill_type type;
+ const char *name;
+ int result;
+ bool hwblock, swblock;
+
+ switch (nc_type) {
+ case SONY_WIFI:
+ type = RFKILL_TYPE_WLAN;
+ name = "sony-wifi";
+ break;
+ case SONY_BLUETOOTH:
+ type = RFKILL_TYPE_BLUETOOTH;
+ name = "sony-bluetooth";
+ break;
+ case SONY_WWAN:
+ type = RFKILL_TYPE_WWAN;
+ name = "sony-wwan";
+ break;
+ case SONY_WIMAX:
+ type = RFKILL_TYPE_WIMAX;
+ name = "sony-wimax";
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ rfk = rfkill_alloc(name, &device->dev, type,
+ &sony_rfkill_ops, (void *)nc_type);
+ if (!rfk)
+ return -ENOMEM;
+
+ if (sony_call_snc_handle(sony_rfkill_handle, 0x200, &result) < 0) {
+ rfkill_destroy(rfk);
+ return -1;
+ }
+ hwblock = !(result & 0x1);
+
+ if (sony_call_snc_handle(sony_rfkill_handle,
+ sony_rfkill_address[nc_type],
+ &result) < 0) {
+ rfkill_destroy(rfk);
+ return -1;
+ }
+ swblock = !(result & 0x2);
+
+ rfkill_init_sw_state(rfk, swblock);
+ rfkill_set_hw_state(rfk, hwblock);
+
+ err = rfkill_register(rfk);
+ if (err) {
+ rfkill_destroy(rfk);
+ return err;
+ }
+ sony_rfkill_devices[nc_type] = rfk;
+ return err;
+}
+
+static void sony_nc_rfkill_update(void)
+{
+ enum sony_nc_rfkill i;
+ int result;
+ bool hwblock;
+
+ sony_call_snc_handle(sony_rfkill_handle, 0x200, &result);
+ hwblock = !(result & 0x1);
+
+ for (i = 0; i < N_SONY_RFKILL; i++) {
+ int argument = sony_rfkill_address[i];
+
+ if (!sony_rfkill_devices[i])
+ continue;
+
+ if (hwblock) {
+ if (rfkill_set_hw_state(sony_rfkill_devices[i], true)) {
+ /* we already know we're blocked */
+ }
+ continue;
+ }
+
+ sony_call_snc_handle(sony_rfkill_handle, argument, &result);
+ rfkill_set_states(sony_rfkill_devices[i],
+ !(result & 0x2), false);
+ }
+}
+
+static int sony_nc_rfkill_setup(struct acpi_device *device,
+ unsigned int handle)
+{
+ u64 offset;
+ int i;
+ unsigned char buffer[32] = { 0 };
+
+ offset = sony_find_snc_handle(handle);
+ sony_rfkill_handle = handle;
+
+ i = sony_nc_buffer_call(sony_nc_acpi_handle, "SN06", &offset, buffer,
+ 32);
+ if (i < 0)
+ return i;
+
+ /* The buffer is filled with magic numbers describing the devices
+ * available, 0xff terminates the enumeration.
+ * Known codes:
+ * 0x00 WLAN
+ * 0x10 BLUETOOTH
+ * 0x20 WWAN GPRS-EDGE
+ * 0x21 WWAN HSDPA
+ * 0x22 WWAN EV-DO
+ * 0x23 WWAN GPS
+ * 0x25 Gobi WWAN no GPS
+ * 0x26 Gobi WWAN + GPS
+ * 0x28 Gobi WWAN no GPS
+ * 0x29 Gobi WWAN + GPS
+ * 0x30 WIMAX
+ * 0x50 Gobi WWAN no GPS
+ * 0x51 Gobi WWAN + GPS
+ * 0x70 no SIM card slot
+ * 0x71 SIM card slot
+ */
+ for (i = 0; i < ARRAY_SIZE(buffer); i++) {
+
+ if (buffer[i] == 0xff)
+ break;
+
+ dprintk("Radio devices, found 0x%.2x\n", buffer[i]);
+
+ if (buffer[i] == 0 && !sony_rfkill_devices[SONY_WIFI])
+ sony_nc_setup_rfkill(device, SONY_WIFI);
+
+ if (buffer[i] == 0x10 && !sony_rfkill_devices[SONY_BLUETOOTH])
+ sony_nc_setup_rfkill(device, SONY_BLUETOOTH);
+
+ if (((0xf0 & buffer[i]) == 0x20 ||
+ (0xf0 & buffer[i]) == 0x50) &&
+ !sony_rfkill_devices[SONY_WWAN])
+ sony_nc_setup_rfkill(device, SONY_WWAN);
+
+ if (buffer[i] == 0x30 && !sony_rfkill_devices[SONY_WIMAX])
+ sony_nc_setup_rfkill(device, SONY_WIMAX);
+ }
+ return 0;
+}
+
+/* Keyboard backlight feature */
+struct kbd_backlight {
+ unsigned int handle;
+ unsigned int base;
+ unsigned int mode;
+ unsigned int timeout;
+ struct device_attribute mode_attr;
+ struct device_attribute timeout_attr;
+};
+
+static struct kbd_backlight *kbdbl_ctl;
+
+static ssize_t __sony_nc_kbd_backlight_mode_set(u8 value)
+{
+ int result;
+
+ if (value > 2)
+ return -EINVAL;
+
+ if (sony_call_snc_handle(kbdbl_ctl->handle,
+ (value << 0x10) | (kbdbl_ctl->base), &result))
+ return -EIO;
+
+ /* Try to turn the light on/off immediately */
+ if (value != 1)
+ sony_call_snc_handle(kbdbl_ctl->handle,
+ (value << 0x0f) | (kbdbl_ctl->base + 0x100),
+ &result);
+
+ kbdbl_ctl->mode = value;
+
+ return 0;
+}
+
+static ssize_t sony_nc_kbd_backlight_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ int ret = 0;
+ unsigned long value;
+
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value))
+ return -EINVAL;
+
+ ret = __sony_nc_kbd_backlight_mode_set(value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t sony_nc_kbd_backlight_mode_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ ssize_t count = 0;
+ count = snprintf(buffer, PAGE_SIZE, "%d\n", kbdbl_ctl->mode);
+ return count;
+}
+
+static int __sony_nc_kbd_backlight_timeout_set(u8 value)
+{
+ int result;
+
+ if (value > 3)
+ return -EINVAL;
+
+ if (sony_call_snc_handle(kbdbl_ctl->handle, (value << 0x10) |
+ (kbdbl_ctl->base + 0x200), &result))
+ return -EIO;
+
+ kbdbl_ctl->timeout = value;
+
+ return 0;
+}
+
+static ssize_t sony_nc_kbd_backlight_timeout_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ int ret = 0;
+ unsigned long value;
+
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value))
+ return -EINVAL;
+
+ ret = __sony_nc_kbd_backlight_timeout_set(value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t sony_nc_kbd_backlight_timeout_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ ssize_t count = 0;
+ count = snprintf(buffer, PAGE_SIZE, "%d\n", kbdbl_ctl->timeout);
+ return count;
+}
+
+static int sony_nc_kbd_backlight_setup(struct platform_device *pd,
+ unsigned int handle)
+{
+ int result;
+ int ret = 0;
+
+ if (kbdbl_ctl) {
+ pr_warn("handle 0x%.4x: keyboard backlight setup already done for 0x%.4x\n",
+ handle, kbdbl_ctl->handle);
+ return -EBUSY;
+ }
+
+ /* verify the kbd backlight presence, these handles are not used for
+ * keyboard backlight only
+ */
+ ret = sony_call_snc_handle(handle, handle == 0x0137 ? 0x0B00 : 0x0100,
+ &result);
+ if (ret)
+ return ret;
+
+ if ((handle == 0x0137 && !(result & 0x02)) ||
+ !(result & 0x01)) {
+ dprintk("no backlight keyboard found\n");
+ return 0;
+ }
+
+ kbdbl_ctl = kzalloc(sizeof(*kbdbl_ctl), GFP_KERNEL);
+ if (!kbdbl_ctl)
+ return -ENOMEM;
+
+ kbdbl_ctl->mode = kbd_backlight;
+ kbdbl_ctl->timeout = kbd_backlight_timeout;
+ kbdbl_ctl->handle = handle;
+ if (handle == 0x0137)
+ kbdbl_ctl->base = 0x0C00;
+ else
+ kbdbl_ctl->base = 0x4000;
+
+ sysfs_attr_init(&kbdbl_ctl->mode_attr.attr);
+ kbdbl_ctl->mode_attr.attr.name = "kbd_backlight";
+ kbdbl_ctl->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
+ kbdbl_ctl->mode_attr.show = sony_nc_kbd_backlight_mode_show;
+ kbdbl_ctl->mode_attr.store = sony_nc_kbd_backlight_mode_store;
+
+ sysfs_attr_init(&kbdbl_ctl->timeout_attr.attr);
+ kbdbl_ctl->timeout_attr.attr.name = "kbd_backlight_timeout";
+ kbdbl_ctl->timeout_attr.attr.mode = S_IRUGO | S_IWUSR;
+ kbdbl_ctl->timeout_attr.show = sony_nc_kbd_backlight_timeout_show;
+ kbdbl_ctl->timeout_attr.store = sony_nc_kbd_backlight_timeout_store;
+
+ ret = device_create_file(&pd->dev, &kbdbl_ctl->mode_attr);
+ if (ret)
+ goto outkzalloc;
+
+ ret = device_create_file(&pd->dev, &kbdbl_ctl->timeout_attr);
+ if (ret)
+ goto outmode;
+
+ __sony_nc_kbd_backlight_mode_set(kbdbl_ctl->mode);
+ __sony_nc_kbd_backlight_timeout_set(kbdbl_ctl->timeout);
+
+ return 0;
+
+outmode:
+ device_remove_file(&pd->dev, &kbdbl_ctl->mode_attr);
+outkzalloc:
+ kfree(kbdbl_ctl);
+ kbdbl_ctl = NULL;
+ return ret;
+}
+
+static void sony_nc_kbd_backlight_cleanup(struct platform_device *pd,
+ unsigned int handle)
+{
+ if (kbdbl_ctl && handle == kbdbl_ctl->handle) {
+ device_remove_file(&pd->dev, &kbdbl_ctl->mode_attr);
+ device_remove_file(&pd->dev, &kbdbl_ctl->timeout_attr);
+ kfree(kbdbl_ctl);
+ kbdbl_ctl = NULL;
+ }
+}
+
+struct battery_care_control {
+ struct device_attribute attrs[2];
+ unsigned int handle;
+};
+static struct battery_care_control *bcare_ctl;
+
+static ssize_t sony_nc_battery_care_limit_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ unsigned int result, cmd;
+ unsigned long value;
+
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value))
+ return -EINVAL;
+
+ /* limit values (2 bits):
+ * 00 - none
+ * 01 - 80%
+ * 10 - 50%
+ * 11 - 100%
+ *
+ * bit 0: 0 disable BCL, 1 enable BCL
+ * bit 1: 1 tell to store the battery limit (see bits 6,7) too
+ * bits 2,3: reserved
+ * bits 4,5: store the limit into the EC
+ * bits 6,7: store the limit into the battery
+ */
+ cmd = 0;
+
+ if (value > 0) {
+ if (value <= 50)
+ cmd = 0x20;
+
+ else if (value <= 80)
+ cmd = 0x10;
+
+ else if (value <= 100)
+ cmd = 0x30;
+
+ else
+ return -EINVAL;
+
+ /*
+ * handle 0x0115 should allow storing on battery too;
+ * handle 0x0136 same as 0x0115 + health status;
+ * handle 0x013f, same as 0x0136 but no storing on the battery
+ */
+ if (bcare_ctl->handle != 0x013f)
+ cmd = cmd | (cmd << 2);
+
+ cmd = (cmd | 0x1) << 0x10;
+ }
+
+ if (sony_call_snc_handle(bcare_ctl->handle, cmd | 0x0100, &result))
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t sony_nc_battery_care_limit_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ unsigned int result, status;
+
+ if (sony_call_snc_handle(bcare_ctl->handle, 0x0000, &result))
+ return -EIO;
+
+ status = (result & 0x01) ? ((result & 0x30) >> 0x04) : 0;
+ switch (status) {
+ case 1:
+ status = 80;
+ break;
+ case 2:
+ status = 50;
+ break;
+ case 3:
+ status = 100;
+ break;
+ default:
+ status = 0;
+ break;
+ }
+
+ return snprintf(buffer, PAGE_SIZE, "%d\n", status);
+}
+
+static ssize_t sony_nc_battery_care_health_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ ssize_t count = 0;
+ unsigned int health;
+
+ if (sony_call_snc_handle(bcare_ctl->handle, 0x0200, &health))
+ return -EIO;
+
+ count = snprintf(buffer, PAGE_SIZE, "%d\n", health & 0xff);
+
+ return count;
+}
+
+static int sony_nc_battery_care_setup(struct platform_device *pd,
+ unsigned int handle)
+{
+ int ret = 0;
+
+ bcare_ctl = kzalloc(sizeof(struct battery_care_control), GFP_KERNEL);
+ if (!bcare_ctl)
+ return -ENOMEM;
+
+ bcare_ctl->handle = handle;
+
+ sysfs_attr_init(&bcare_ctl->attrs[0].attr);
+ bcare_ctl->attrs[0].attr.name = "battery_care_limiter";
+ bcare_ctl->attrs[0].attr.mode = S_IRUGO | S_IWUSR;
+ bcare_ctl->attrs[0].show = sony_nc_battery_care_limit_show;
+ bcare_ctl->attrs[0].store = sony_nc_battery_care_limit_store;
+
+ ret = device_create_file(&pd->dev, &bcare_ctl->attrs[0]);
+ if (ret)
+ goto outkzalloc;
+
+ /* 0x0115 is for models with no health reporting capability */
+ if (handle == 0x0115)
+ return 0;
+
+ sysfs_attr_init(&bcare_ctl->attrs[1].attr);
+ bcare_ctl->attrs[1].attr.name = "battery_care_health";
+ bcare_ctl->attrs[1].attr.mode = S_IRUGO;
+ bcare_ctl->attrs[1].show = sony_nc_battery_care_health_show;
+
+ ret = device_create_file(&pd->dev, &bcare_ctl->attrs[1]);
+ if (ret)
+ goto outlimiter;
+
+ return 0;
+
+outlimiter:
+ device_remove_file(&pd->dev, &bcare_ctl->attrs[0]);
+
+outkzalloc:
+ kfree(bcare_ctl);
+ bcare_ctl = NULL;
+
+ return ret;
+}
+
+static void sony_nc_battery_care_cleanup(struct platform_device *pd)
+{
+ if (bcare_ctl) {
+ device_remove_file(&pd->dev, &bcare_ctl->attrs[0]);
+ if (bcare_ctl->handle != 0x0115)
+ device_remove_file(&pd->dev, &bcare_ctl->attrs[1]);
+
+ kfree(bcare_ctl);
+ bcare_ctl = NULL;
+ }
+}
+
+struct snc_thermal_ctrl {
+ unsigned int mode;
+ unsigned int profiles;
+ struct device_attribute mode_attr;
+ struct device_attribute profiles_attr;
+};
+static struct snc_thermal_ctrl *th_handle;
+
+#define THM_PROFILE_MAX 3
+static const char * const snc_thermal_profiles[] = {
+ "balanced",
+ "silent",
+ "performance"
+};
+
+static int sony_nc_thermal_mode_set(unsigned short mode)
+{
+ unsigned int result;
+
+ /* the thermal profile seems to be a two bit bitmask:
+ * lsb -> silent
+ * msb -> performance
+ * no bit set is the normal operation and is always valid
+ * Some vaio models only have "balanced" and "performance"
+ */
+ if ((mode && !(th_handle->profiles & mode)) || mode >= THM_PROFILE_MAX)
+ return -EINVAL;
+
+ if (sony_call_snc_handle(0x0122, mode << 0x10 | 0x0200, &result))
+ return -EIO;
+
+ th_handle->mode = mode;
+
+ return 0;
+}
+
+static int sony_nc_thermal_mode_get(void)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(0x0122, 0x0100, &result))
+ return -EIO;
+
+ return result & 0xff;
+}
+
+static ssize_t sony_nc_thermal_profiles_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ short cnt;
+ size_t idx = 0;
+
+ for (cnt = 0; cnt < THM_PROFILE_MAX; cnt++) {
+ if (!cnt || (th_handle->profiles & cnt))
+ idx += snprintf(buffer + idx, PAGE_SIZE - idx, "%s ",
+ snc_thermal_profiles[cnt]);
+ }
+ idx += snprintf(buffer + idx, PAGE_SIZE - idx, "\n");
+
+ return idx;
+}
+
+static ssize_t sony_nc_thermal_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ unsigned short cmd;
+ size_t len = count;
+
+ if (count == 0)
+ return -EINVAL;
+
+ /* skip the newline if present */
+ if (buffer[len - 1] == '\n')
+ len--;
+
+ for (cmd = 0; cmd < THM_PROFILE_MAX; cmd++)
+ if (strncmp(buffer, snc_thermal_profiles[cmd], len) == 0)
+ break;
+
+ if (sony_nc_thermal_mode_set(cmd))
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t sony_nc_thermal_mode_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ ssize_t count = 0;
+ int mode = sony_nc_thermal_mode_get();
+
+ if (mode < 0)
+ return mode;
+
+ count = snprintf(buffer, PAGE_SIZE, "%s\n", snc_thermal_profiles[mode]);
+
+ return count;
+}
+
+static int sony_nc_thermal_setup(struct platform_device *pd)
+{
+ int ret = 0;
+ th_handle = kzalloc(sizeof(struct snc_thermal_ctrl), GFP_KERNEL);
+ if (!th_handle)
+ return -ENOMEM;
+
+ ret = sony_call_snc_handle(0x0122, 0x0000, &th_handle->profiles);
+ if (ret) {
+ pr_warn("couldn't to read the thermal profiles\n");
+ goto outkzalloc;
+ }
+
+ ret = sony_nc_thermal_mode_get();
+ if (ret < 0) {
+ pr_warn("couldn't to read the current thermal profile");
+ goto outkzalloc;
+ }
+ th_handle->mode = ret;
+
+ sysfs_attr_init(&th_handle->profiles_attr.attr);
+ th_handle->profiles_attr.attr.name = "thermal_profiles";
+ th_handle->profiles_attr.attr.mode = S_IRUGO;
+ th_handle->profiles_attr.show = sony_nc_thermal_profiles_show;
+
+ sysfs_attr_init(&th_handle->mode_attr.attr);
+ th_handle->mode_attr.attr.name = "thermal_control";
+ th_handle->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
+ th_handle->mode_attr.show = sony_nc_thermal_mode_show;
+ th_handle->mode_attr.store = sony_nc_thermal_mode_store;
+
+ ret = device_create_file(&pd->dev, &th_handle->profiles_attr);
+ if (ret)
+ goto outkzalloc;
+
+ ret = device_create_file(&pd->dev, &th_handle->mode_attr);
+ if (ret)
+ goto outprofiles;
+
+ return 0;
+
+outprofiles:
+ device_remove_file(&pd->dev, &th_handle->profiles_attr);
+outkzalloc:
+ kfree(th_handle);
+ th_handle = NULL;
+ return ret;
+}
+
+static void sony_nc_thermal_cleanup(struct platform_device *pd)
+{
+ if (th_handle) {
+ device_remove_file(&pd->dev, &th_handle->profiles_attr);
+ device_remove_file(&pd->dev, &th_handle->mode_attr);
+ kfree(th_handle);
+ th_handle = NULL;
+ }
+}
+
+#ifdef CONFIG_PM_SLEEP
+static void sony_nc_thermal_resume(void)
+{
+ unsigned int status = sony_nc_thermal_mode_get();
+
+ if (status != th_handle->mode)
+ sony_nc_thermal_mode_set(th_handle->mode);
+}
+#endif
+
+/* resume on LID open */
+#define LID_RESUME_S5 0
+#define LID_RESUME_S4 1
+#define LID_RESUME_S3 2
+#define LID_RESUME_MAX 3
+struct snc_lid_resume_control {
+ struct device_attribute attrs[LID_RESUME_MAX];
+ unsigned int status;
+ int handle;
+};
+static struct snc_lid_resume_control *lid_ctl;
+
+static ssize_t sony_nc_lid_resume_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ unsigned int result;
+ unsigned long value;
+ unsigned int pos = LID_RESUME_S5;
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value) || value > 1)
+ return -EINVAL;
+
+ /* the value we have to write to SNC is a bitmask:
+ * +--------------+
+ * | S3 | S4 | S5 |
+ * +--------------+
+ * 2 1 0
+ */
+ while (pos < LID_RESUME_MAX) {
+ if (&lid_ctl->attrs[pos].attr == &attr->attr)
+ break;
+ pos++;
+ }
+ if (pos == LID_RESUME_MAX)
+ return -EINVAL;
+
+ if (value)
+ value = lid_ctl->status | (1 << pos);
+ else
+ value = lid_ctl->status & ~(1 << pos);
+
+ if (sony_call_snc_handle(lid_ctl->handle, value << 0x10 | 0x0100,
+ &result))
+ return -EIO;
+
+ lid_ctl->status = value;
+
+ return count;
+}
+
+static ssize_t sony_nc_lid_resume_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buffer)
+{
+ unsigned int pos = LID_RESUME_S5;
+
+ while (pos < LID_RESUME_MAX) {
+ if (&lid_ctl->attrs[pos].attr == &attr->attr)
+ return snprintf(buffer, PAGE_SIZE, "%d\n",
+ (lid_ctl->status >> pos) & 0x01);
+ pos++;
+ }
+ return -EINVAL;
+}
+
+static int sony_nc_lid_resume_setup(struct platform_device *pd,
+ unsigned int handle)
+{
+ unsigned int result;
+ int i;
+
+ if (sony_call_snc_handle(handle, 0x0000, &result))
+ return -EIO;
+
+ lid_ctl = kzalloc(sizeof(struct snc_lid_resume_control), GFP_KERNEL);
+ if (!lid_ctl)
+ return -ENOMEM;
+
+ lid_ctl->status = result & 0x7;
+ lid_ctl->handle = handle;
+
+ sysfs_attr_init(&lid_ctl->attrs[0].attr);
+ lid_ctl->attrs[LID_RESUME_S5].attr.name = "lid_resume_S5";
+ lid_ctl->attrs[LID_RESUME_S5].attr.mode = S_IRUGO | S_IWUSR;
+ lid_ctl->attrs[LID_RESUME_S5].show = sony_nc_lid_resume_show;
+ lid_ctl->attrs[LID_RESUME_S5].store = sony_nc_lid_resume_store;
+
+ if (handle == 0x0119) {
+ sysfs_attr_init(&lid_ctl->attrs[1].attr);
+ lid_ctl->attrs[LID_RESUME_S4].attr.name = "lid_resume_S4";
+ lid_ctl->attrs[LID_RESUME_S4].attr.mode = S_IRUGO | S_IWUSR;
+ lid_ctl->attrs[LID_RESUME_S4].show = sony_nc_lid_resume_show;
+ lid_ctl->attrs[LID_RESUME_S4].store = sony_nc_lid_resume_store;
+
+ sysfs_attr_init(&lid_ctl->attrs[2].attr);
+ lid_ctl->attrs[LID_RESUME_S3].attr.name = "lid_resume_S3";
+ lid_ctl->attrs[LID_RESUME_S3].attr.mode = S_IRUGO | S_IWUSR;
+ lid_ctl->attrs[LID_RESUME_S3].show = sony_nc_lid_resume_show;
+ lid_ctl->attrs[LID_RESUME_S3].store = sony_nc_lid_resume_store;
+ }
+ for (i = 0; i < LID_RESUME_MAX &&
+ lid_ctl->attrs[i].attr.name; i++) {
+ result = device_create_file(&pd->dev, &lid_ctl->attrs[i]);
+ if (result)
+ goto liderror;
+ }
+
+ return 0;
+
+liderror:
+ for (i--; i >= 0; i--)
+ device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
+
+ kfree(lid_ctl);
+ lid_ctl = NULL;
+
+ return result;
+}
+
+static void sony_nc_lid_resume_cleanup(struct platform_device *pd)
+{
+ int i;
+
+ if (lid_ctl) {
+ for (i = 0; i < LID_RESUME_MAX; i++) {
+ if (!lid_ctl->attrs[i].attr.name)
+ break;
+
+ device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
+ }
+
+ kfree(lid_ctl);
+ lid_ctl = NULL;
+ }
+}
+
+/* GFX Switch position */
+enum gfx_switch {
+ SPEED,
+ STAMINA,
+ AUTO
+};
+struct snc_gfx_switch_control {
+ struct device_attribute attr;
+ unsigned int handle;
+};
+static struct snc_gfx_switch_control *gfxs_ctl;
+
+/* returns 0 for speed, 1 for stamina */
+static int __sony_nc_gfx_switch_status_get(void)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(gfxs_ctl->handle,
+ gfxs_ctl->handle == 0x015B ? 0x0000 : 0x0100,
+ &result))
+ return -EIO;
+
+ switch (gfxs_ctl->handle) {
+ case 0x0146:
+ /* 1: discrete GFX (speed)
+ * 0: integrated GFX (stamina)
+ */
+ return result & 0x1 ? SPEED : STAMINA;
+ break;
+ case 0x015B:
+ /* 0: discrete GFX (speed)
+ * 1: integrated GFX (stamina)
+ */
+ return result & 0x1 ? STAMINA : SPEED;
+ break;
+ case 0x0128:
+ /* it's a more elaborated bitmask, for now:
+ * 2: integrated GFX (stamina)
+ * 0: discrete GFX (speed)
+ */
+ dprintk("GFX Status: 0x%x\n", result);
+ return result & 0x80 ? AUTO :
+ result & 0x02 ? STAMINA : SPEED;
+ break;
+ }
+ return -EINVAL;
+}
+
+static ssize_t sony_nc_gfx_switch_status_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buffer)
+{
+ int pos = __sony_nc_gfx_switch_status_get();
+
+ if (pos < 0)
+ return pos;
+
+ return snprintf(buffer, PAGE_SIZE, "%s\n",
+ pos == SPEED ? "speed" :
+ pos == STAMINA ? "stamina" :
+ pos == AUTO ? "auto" : "unknown");
+}
+
+static int sony_nc_gfx_switch_setup(struct platform_device *pd,
+ unsigned int handle)
+{
+ unsigned int result;
+
+ gfxs_ctl = kzalloc(sizeof(struct snc_gfx_switch_control), GFP_KERNEL);
+ if (!gfxs_ctl)
+ return -ENOMEM;
+
+ gfxs_ctl->handle = handle;
+
+ sysfs_attr_init(&gfxs_ctl->attr.attr);
+ gfxs_ctl->attr.attr.name = "gfx_switch_status";
+ gfxs_ctl->attr.attr.mode = S_IRUGO;
+ gfxs_ctl->attr.show = sony_nc_gfx_switch_status_show;
+
+ result = device_create_file(&pd->dev, &gfxs_ctl->attr);
+ if (result)
+ goto gfxerror;
+
+ return 0;
+
+gfxerror:
+ kfree(gfxs_ctl);
+ gfxs_ctl = NULL;
+
+ return result;
+}
+
+static void sony_nc_gfx_switch_cleanup(struct platform_device *pd)
+{
+ if (gfxs_ctl) {
+ device_remove_file(&pd->dev, &gfxs_ctl->attr);
+
+ kfree(gfxs_ctl);
+ gfxs_ctl = NULL;
+ }
+}
+
+/* High speed charging function */
+static struct device_attribute *hsc_handle;
+
+static ssize_t sony_nc_highspeed_charging_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ unsigned int result;
+ unsigned long value;
+
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value) || value > 1)
+ return -EINVAL;
+
+ if (sony_call_snc_handle(0x0131, value << 0x10 | 0x0200, &result))
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t sony_nc_highspeed_charging_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(0x0131, 0x0100, &result))
+ return -EIO;
+
+ return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
+}
+
+static int sony_nc_highspeed_charging_setup(struct platform_device *pd)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(0x0131, 0x0000, &result) || !(result & 0x01)) {
+ /* some models advertise the handle but have no implementation
+ * for it
+ */
+ pr_info("No High Speed Charging capability found\n");
+ return 0;
+ }
+
+ hsc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
+ if (!hsc_handle)
+ return -ENOMEM;
+
+ sysfs_attr_init(&hsc_handle->attr);
+ hsc_handle->attr.name = "battery_highspeed_charging";
+ hsc_handle->attr.mode = S_IRUGO | S_IWUSR;
+ hsc_handle->show = sony_nc_highspeed_charging_show;
+ hsc_handle->store = sony_nc_highspeed_charging_store;
+
+ result = device_create_file(&pd->dev, hsc_handle);
+ if (result) {
+ kfree(hsc_handle);
+ hsc_handle = NULL;
+ return result;
+ }
+
+ return 0;
+}
+
+static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd)
+{
+ if (hsc_handle) {
+ device_remove_file(&pd->dev, hsc_handle);
+ kfree(hsc_handle);
+ hsc_handle = NULL;
+ }
+}
+
+/* low battery function */
+static struct device_attribute *lowbatt_handle;
+
+static ssize_t sony_nc_lowbatt_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ unsigned int result;
+ unsigned long value;
+
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value) || value > 1)
+ return -EINVAL;
+
+ if (sony_call_snc_handle(0x0121, value << 8, &result))
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t sony_nc_lowbatt_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(0x0121, 0x0200, &result))
+ return -EIO;
+
+ return snprintf(buffer, PAGE_SIZE, "%d\n", result & 1);
+}
+
+static int sony_nc_lowbatt_setup(struct platform_device *pd)
+{
+ unsigned int result;
+
+ lowbatt_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
+ if (!lowbatt_handle)
+ return -ENOMEM;
+
+ sysfs_attr_init(&lowbatt_handle->attr);
+ lowbatt_handle->attr.name = "lowbatt_hibernate";
+ lowbatt_handle->attr.mode = S_IRUGO | S_IWUSR;
+ lowbatt_handle->show = sony_nc_lowbatt_show;
+ lowbatt_handle->store = sony_nc_lowbatt_store;
+
+ result = device_create_file(&pd->dev, lowbatt_handle);
+ if (result) {
+ kfree(lowbatt_handle);
+ lowbatt_handle = NULL;
+ return result;
+ }
+
+ return 0;
+}
+
+static void sony_nc_lowbatt_cleanup(struct platform_device *pd)
+{
+ if (lowbatt_handle) {
+ device_remove_file(&pd->dev, lowbatt_handle);
+ kfree(lowbatt_handle);
+ lowbatt_handle = NULL;
+ }
+}
+
+/* fan speed function */
+static struct device_attribute *fan_handle, *hsf_handle;
+
+static ssize_t sony_nc_hsfan_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ unsigned int result;
+ unsigned long value;
+
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value) || value > 1)
+ return -EINVAL;
+
+ if (sony_call_snc_handle(0x0149, value << 0x10 | 0x0200, &result))
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t sony_nc_hsfan_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(0x0149, 0x0100, &result))
+ return -EIO;
+
+ return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
+}
+
+static ssize_t sony_nc_fanspeed_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(0x0149, 0x0300, &result))
+ return -EIO;
+
+ return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0xff);
+}
+
+static int sony_nc_fanspeed_setup(struct platform_device *pd)
+{
+ unsigned int result;
+
+ fan_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
+ if (!fan_handle)
+ return -ENOMEM;
+
+ hsf_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
+ if (!hsf_handle) {
+ result = -ENOMEM;
+ goto out_hsf_handle_alloc;
+ }
+
+ sysfs_attr_init(&fan_handle->attr);
+ fan_handle->attr.name = "fanspeed";
+ fan_handle->attr.mode = S_IRUGO;
+ fan_handle->show = sony_nc_fanspeed_show;
+ fan_handle->store = NULL;
+
+ sysfs_attr_init(&hsf_handle->attr);
+ hsf_handle->attr.name = "fan_forced";
+ hsf_handle->attr.mode = S_IRUGO | S_IWUSR;
+ hsf_handle->show = sony_nc_hsfan_show;
+ hsf_handle->store = sony_nc_hsfan_store;
+
+ result = device_create_file(&pd->dev, fan_handle);
+ if (result)
+ goto out_fan_handle;
+
+ result = device_create_file(&pd->dev, hsf_handle);
+ if (result)
+ goto out_hsf_handle;
+
+ return 0;
+
+out_hsf_handle:
+ device_remove_file(&pd->dev, fan_handle);
+
+out_fan_handle:
+ kfree(hsf_handle);
+ hsf_handle = NULL;
+
+out_hsf_handle_alloc:
+ kfree(fan_handle);
+ fan_handle = NULL;
+ return result;
+}
+
+static void sony_nc_fanspeed_cleanup(struct platform_device *pd)
+{
+ if (fan_handle) {
+ device_remove_file(&pd->dev, fan_handle);
+ kfree(fan_handle);
+ fan_handle = NULL;
+ }
+ if (hsf_handle) {
+ device_remove_file(&pd->dev, hsf_handle);
+ kfree(hsf_handle);
+ hsf_handle = NULL;
+ }
+}
+
+/* USB charge function */
+static struct device_attribute *uc_handle;
+
+static ssize_t sony_nc_usb_charge_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ unsigned int result;
+ unsigned long value;
+
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value) || value > 1)
+ return -EINVAL;
+
+ if (sony_call_snc_handle(0x0155, value << 0x10 | 0x0100, &result))
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t sony_nc_usb_charge_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(0x0155, 0x0000, &result))
+ return -EIO;
+
+ return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
+}
+
+static int sony_nc_usb_charge_setup(struct platform_device *pd)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(0x0155, 0x0000, &result) || !(result & 0x01)) {
+ /* some models advertise the handle but have no implementation
+ * for it
+ */
+ pr_info("No USB Charge capability found\n");
+ return 0;
+ }
+
+ uc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
+ if (!uc_handle)
+ return -ENOMEM;
+
+ sysfs_attr_init(&uc_handle->attr);
+ uc_handle->attr.name = "usb_charge";
+ uc_handle->attr.mode = S_IRUGO | S_IWUSR;
+ uc_handle->show = sony_nc_usb_charge_show;
+ uc_handle->store = sony_nc_usb_charge_store;
+
+ result = device_create_file(&pd->dev, uc_handle);
+ if (result) {
+ kfree(uc_handle);
+ uc_handle = NULL;
+ return result;
+ }
+
+ return 0;
+}
+
+static void sony_nc_usb_charge_cleanup(struct platform_device *pd)
+{
+ if (uc_handle) {
+ device_remove_file(&pd->dev, uc_handle);
+ kfree(uc_handle);
+ uc_handle = NULL;
+ }
+}
+
+/* Panel ID function */
+static struct device_attribute *panel_handle;
+
+static ssize_t sony_nc_panelid_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(0x011D, 0x0000, &result))
+ return -EIO;
+
+ return snprintf(buffer, PAGE_SIZE, "%d\n", result);
+}
+
+static int sony_nc_panelid_setup(struct platform_device *pd)
+{
+ unsigned int result;
+
+ panel_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
+ if (!panel_handle)
+ return -ENOMEM;
+
+ sysfs_attr_init(&panel_handle->attr);
+ panel_handle->attr.name = "panel_id";
+ panel_handle->attr.mode = S_IRUGO;
+ panel_handle->show = sony_nc_panelid_show;
+ panel_handle->store = NULL;
+
+ result = device_create_file(&pd->dev, panel_handle);
+ if (result) {
+ kfree(panel_handle);
+ panel_handle = NULL;
+ return result;
+ }
+
+ return 0;
+}
+
+static void sony_nc_panelid_cleanup(struct platform_device *pd)
+{
+ if (panel_handle) {
+ device_remove_file(&pd->dev, panel_handle);
+ kfree(panel_handle);
+ panel_handle = NULL;
+ }
+}
+
+/* smart connect function */
+static struct device_attribute *sc_handle;
+
+static ssize_t sony_nc_smart_conn_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ unsigned int result;
+ unsigned long value;
+
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value) || value > 1)
+ return -EINVAL;
+
+ if (sony_call_snc_handle(0x0168, value << 0x10, &result))
+ return -EIO;
+
+ return count;
+}
+
+static int sony_nc_smart_conn_setup(struct platform_device *pd)
+{
+ unsigned int result;
+
+ sc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
+ if (!sc_handle)
+ return -ENOMEM;
+
+ sysfs_attr_init(&sc_handle->attr);
+ sc_handle->attr.name = "smart_connect";
+ sc_handle->attr.mode = S_IWUSR;
+ sc_handle->show = NULL;
+ sc_handle->store = sony_nc_smart_conn_store;
+
+ result = device_create_file(&pd->dev, sc_handle);
+ if (result) {
+ kfree(sc_handle);
+ sc_handle = NULL;
+ return result;
+ }
+
+ return 0;
+}
+
+static void sony_nc_smart_conn_cleanup(struct platform_device *pd)
+{
+ if (sc_handle) {
+ device_remove_file(&pd->dev, sc_handle);
+ kfree(sc_handle);
+ sc_handle = NULL;
+ }
+}
+
+/* Touchpad enable/disable */
+struct touchpad_control {
+ struct device_attribute attr;
+ int handle;
+};
+static struct touchpad_control *tp_ctl;
+
+static ssize_t sony_nc_touchpad_store(struct device *dev,
+ struct device_attribute *attr, const char *buffer, size_t count)
+{
+ unsigned int result;
+ unsigned long value;
+
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value) || value > 1)
+ return -EINVAL;
+
+ /* sysfs: 0 disabled, 1 enabled
+ * EC: 0 enabled, 1 disabled
+ */
+ if (sony_call_snc_handle(tp_ctl->handle,
+ (!value << 0x10) | 0x100, &result))
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t sony_nc_touchpad_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(tp_ctl->handle, 0x000, &result))
+ return -EINVAL;
+
+ return snprintf(buffer, PAGE_SIZE, "%d\n", !(result & 0x01));
+}
+
+static int sony_nc_touchpad_setup(struct platform_device *pd,
+ unsigned int handle)
+{
+ int ret = 0;
+
+ tp_ctl = kzalloc(sizeof(struct touchpad_control), GFP_KERNEL);
+ if (!tp_ctl)
+ return -ENOMEM;
+
+ tp_ctl->handle = handle;
+
+ sysfs_attr_init(&tp_ctl->attr.attr);
+ tp_ctl->attr.attr.name = "touchpad";
+ tp_ctl->attr.attr.mode = S_IRUGO | S_IWUSR;
+ tp_ctl->attr.show = sony_nc_touchpad_show;
+ tp_ctl->attr.store = sony_nc_touchpad_store;
+
+ ret = device_create_file(&pd->dev, &tp_ctl->attr);
+ if (ret) {
+ kfree(tp_ctl);
+ tp_ctl = NULL;
+ }
+
+ return ret;
+}
+
+static void sony_nc_touchpad_cleanup(struct platform_device *pd)
+{
+ if (tp_ctl) {
+ device_remove_file(&pd->dev, &tp_ctl->attr);
+ kfree(tp_ctl);
+ tp_ctl = NULL;
+ }
+}
+
+static void sony_nc_backlight_ng_read_limits(int handle,
+ struct sony_backlight_props *props)
+{
+ u64 offset;
+ int i;
+ int lvl_table_len = 0;
+ u8 min = 0xff, max = 0x00;
+ unsigned char buffer[32] = { 0 };
+
+ props->handle = handle;
+ props->offset = 0;
+ props->maxlvl = 0xff;
+
+ offset = sony_find_snc_handle(handle);
+
+ /* try to read the boundaries from ACPI tables, if we fail the above
+ * defaults should be reasonable
+ */
+ i = sony_nc_buffer_call(sony_nc_acpi_handle, "SN06", &offset, buffer,
+ 32);
+ if (i < 0)
+ return;
+
+ switch (handle) {
+ case 0x012f:
+ case 0x0137:
+ lvl_table_len = 9;
+ break;
+ case 0x143:
+ case 0x14b:
+ case 0x14c:
+ lvl_table_len = 16;
+ break;
+ }
+
+ /* the buffer lists brightness levels available, brightness levels are
+ * from position 0 to 8 in the array, other values are used by ALS
+ * control.
+ */
+ for (i = 0; i < lvl_table_len && i < ARRAY_SIZE(buffer); i++) {
+
+ dprintk("Brightness level: %d\n", buffer[i]);
+
+ if (!buffer[i])
+ break;
+
+ if (buffer[i] > max)
+ max = buffer[i];
+ if (buffer[i] < min)
+ min = buffer[i];
+ }
+ props->offset = min;
+ props->maxlvl = max;
+ dprintk("Brightness levels: min=%d max=%d\n", props->offset,
+ props->maxlvl);
+}
+
+static void sony_nc_backlight_setup(void)
+{
+ int max_brightness = 0;
+ const struct backlight_ops *ops = NULL;
+ struct backlight_properties props;
+
+ if (sony_find_snc_handle(0x12f) >= 0) {
+ ops = &sony_backlight_ng_ops;
+ sony_bl_props.cmd_base = 0x0100;
+ sony_nc_backlight_ng_read_limits(0x12f, &sony_bl_props);
+ max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
+
+ } else if (sony_find_snc_handle(0x137) >= 0) {
+ ops = &sony_backlight_ng_ops;
+ sony_bl_props.cmd_base = 0x0100;
+ sony_nc_backlight_ng_read_limits(0x137, &sony_bl_props);
+ max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
+
+ } else if (sony_find_snc_handle(0x143) >= 0) {
+ ops = &sony_backlight_ng_ops;
+ sony_bl_props.cmd_base = 0x3000;
+ sony_nc_backlight_ng_read_limits(0x143, &sony_bl_props);
+ max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
+
+ } else if (sony_find_snc_handle(0x14b) >= 0) {
+ ops = &sony_backlight_ng_ops;
+ sony_bl_props.cmd_base = 0x3000;
+ sony_nc_backlight_ng_read_limits(0x14b, &sony_bl_props);
+ max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
+
+ } else if (sony_find_snc_handle(0x14c) >= 0) {
+ ops = &sony_backlight_ng_ops;
+ sony_bl_props.cmd_base = 0x3000;
+ sony_nc_backlight_ng_read_limits(0x14c, &sony_bl_props);
+ max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
+
+ } else if (acpi_has_method(sony_nc_acpi_handle, "GBRT")) {
+ ops = &sony_backlight_ops;
+ max_brightness = SONY_MAX_BRIGHTNESS - 1;
+
+ } else
+ return;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = max_brightness;
+ sony_bl_props.dev = backlight_device_register("sony", NULL,
+ &sony_bl_props,
+ ops, &props);
+
+ if (IS_ERR(sony_bl_props.dev)) {
+ pr_warn("unable to register backlight device\n");
+ sony_bl_props.dev = NULL;
+ } else
+ sony_bl_props.dev->props.brightness =
+ ops->get_brightness(sony_bl_props.dev);
+}
+
+static void sony_nc_backlight_cleanup(void)
+{
+ backlight_device_unregister(sony_bl_props.dev);
+}
+
+static int sony_nc_add(struct acpi_device *device)
+{
+ acpi_status status;
+ int result = 0;
+ struct sony_nc_value *item;
+
+ sony_nc_acpi_device = device;
+ strcpy(acpi_device_class(device), "sony/hotkey");
+
+ sony_nc_acpi_handle = device->handle;
+
+ /* read device status */
+ result = acpi_bus_get_status(device);
+ /* bail IFF the above call was successful and the device is not present */
+ if (!result && !device->status.present) {
+ dprintk("Device not present\n");
+ result = -ENODEV;
+ goto outwalk;
+ }
+
+ result = sony_pf_add();
+ if (result)
+ goto outpresent;
+
+ if (debug) {
+ status = acpi_walk_namespace(ACPI_TYPE_METHOD,
+ sony_nc_acpi_handle, 1, sony_walk_callback,
+ NULL, NULL, NULL);
+ if (ACPI_FAILURE(status)) {
+ pr_warn("unable to walk acpi resources\n");
+ result = -ENODEV;
+ goto outpresent;
+ }
+ }
+
+ result = sony_laptop_setup_input(device);
+ if (result) {
+ pr_err("Unable to create input devices\n");
+ goto outplatform;
+ }
+
+ if (acpi_has_method(sony_nc_acpi_handle, "ECON")) {
+ int arg = 1;
+ if (sony_nc_int_call(sony_nc_acpi_handle, "ECON", &arg, NULL))
+ dprintk("ECON Method failed\n");
+ }
+
+ if (acpi_has_method(sony_nc_acpi_handle, "SN00")) {
+ dprintk("Doing SNC setup\n");
+ /* retrieve the available handles */
+ result = sony_nc_handles_setup(sony_pf_device);
+ if (!result)
+ sony_nc_function_setup(device, sony_pf_device);
+ }
+
+ /* setup input devices and helper fifo */
+ if (acpi_video_backlight_support()) {
+ pr_info("brightness ignored, must be controlled by ACPI video driver\n");
+ } else {
+ sony_nc_backlight_setup();
+ }
+
+ /* create sony_pf sysfs attributes related to the SNC device */
+ for (item = sony_nc_values; item->name; ++item) {
+
+ if (!debug && item->debug)
+ continue;
+
+ /* find the available acpiget as described in the DSDT */
+ for (; item->acpiget && *item->acpiget; ++item->acpiget) {
+ if (acpi_has_method(sony_nc_acpi_handle,
+ *item->acpiget)) {
+ dprintk("Found %s getter: %s\n",
+ item->name, *item->acpiget);
+ item->devattr.attr.mode |= S_IRUGO;
+ break;
+ }
+ }
+
+ /* find the available acpiset as described in the DSDT */
+ for (; item->acpiset && *item->acpiset; ++item->acpiset) {
+ if (acpi_has_method(sony_nc_acpi_handle,
+ *item->acpiset)) {
+ dprintk("Found %s setter: %s\n",
+ item->name, *item->acpiset);
+ item->devattr.attr.mode |= S_IWUSR;
+ break;
+ }
+ }
+
+ if (item->devattr.attr.mode != 0) {
+ result =
+ device_create_file(&sony_pf_device->dev,
+ &item->devattr);
+ if (result)
+ goto out_sysfs;
+ }
+ }
+
+ pr_info("SNC setup done.\n");
+ return 0;
+
+out_sysfs:
+ for (item = sony_nc_values; item->name; ++item) {
+ device_remove_file(&sony_pf_device->dev, &item->devattr);
+ }
+ sony_nc_backlight_cleanup();
+ sony_nc_function_cleanup(sony_pf_device);
+ sony_nc_handles_cleanup(sony_pf_device);
+
+outplatform:
+ sony_laptop_remove_input();
+
+outpresent:
+ sony_pf_remove();
+
+outwalk:
+ sony_nc_rfkill_cleanup();
+ return result;
+}
+
+static int sony_nc_remove(struct acpi_device *device)
+{
+ struct sony_nc_value *item;
+
+ sony_nc_backlight_cleanup();
+
+ sony_nc_acpi_device = NULL;
+
+ for (item = sony_nc_values; item->name; ++item) {
+ device_remove_file(&sony_pf_device->dev, &item->devattr);
+ }
+
+ sony_nc_function_cleanup(sony_pf_device);
+ sony_nc_handles_cleanup(sony_pf_device);
+ sony_pf_remove();
+ sony_laptop_remove_input();
+ dprintk(SONY_NC_DRIVER_NAME " removed.\n");
+
+ return 0;
+}
+
+static const struct acpi_device_id sony_device_ids[] = {
+ {SONY_NC_HID, 0},
+ {SONY_PIC_HID, 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, sony_device_ids);
+
+static const struct acpi_device_id sony_nc_device_ids[] = {
+ {SONY_NC_HID, 0},
+ {"", 0},
+};
+
+static struct acpi_driver sony_nc_driver = {
+ .name = SONY_NC_DRIVER_NAME,
+ .class = SONY_NC_CLASS,
+ .ids = sony_nc_device_ids,
+ .owner = THIS_MODULE,
+ .ops = {
+ .add = sony_nc_add,
+ .remove = sony_nc_remove,
+ .notify = sony_nc_notify,
+ },
+ .drv.pm = &sony_nc_pm,
+};
+
+/*********** SPIC (SNY6001) Device ***********/
+
+#define SONYPI_DEVICE_TYPE1 0x00000001
+#define SONYPI_DEVICE_TYPE2 0x00000002
+#define SONYPI_DEVICE_TYPE3 0x00000004
+
+#define SONYPI_TYPE1_OFFSET 0x04
+#define SONYPI_TYPE2_OFFSET 0x12
+#define SONYPI_TYPE3_OFFSET 0x12
+
+struct sony_pic_ioport {
+ struct acpi_resource_io io1;
+ struct acpi_resource_io io2;
+ struct list_head list;
+};
+
+struct sony_pic_irq {
+ struct acpi_resource_irq irq;
+ struct list_head list;
+};
+
+struct sonypi_eventtypes {
+ u8 data;
+ unsigned long mask;
+ struct sonypi_event *events;
+};
+
+struct sony_pic_dev {
+ struct acpi_device *acpi_dev;
+ struct sony_pic_irq *cur_irq;
+ struct sony_pic_ioport *cur_ioport;
+ struct list_head interrupts;
+ struct list_head ioports;
+ struct mutex lock;
+ struct sonypi_eventtypes *event_types;
+ int (*handle_irq)(const u8, const u8);
+ int model;
+ u16 evport_offset;
+ u8 camera_power;
+ u8 bluetooth_power;
+ u8 wwan_power;
+};
+
+static struct sony_pic_dev spic_dev = {
+ .interrupts = LIST_HEAD_INIT(spic_dev.interrupts),
+ .ioports = LIST_HEAD_INIT(spic_dev.ioports),
+};
+
+static int spic_drv_registered;
+
+/* Event masks */
+#define SONYPI_JOGGER_MASK 0x00000001
+#define SONYPI_CAPTURE_MASK 0x00000002
+#define SONYPI_FNKEY_MASK 0x00000004
+#define SONYPI_BLUETOOTH_MASK 0x00000008
+#define SONYPI_PKEY_MASK 0x00000010
+#define SONYPI_BACK_MASK 0x00000020
+#define SONYPI_HELP_MASK 0x00000040
+#define SONYPI_LID_MASK 0x00000080
+#define SONYPI_ZOOM_MASK 0x00000100
+#define SONYPI_THUMBPHRASE_MASK 0x00000200
+#define SONYPI_MEYE_MASK 0x00000400
+#define SONYPI_MEMORYSTICK_MASK 0x00000800
+#define SONYPI_BATTERY_MASK 0x00001000
+#define SONYPI_WIRELESS_MASK 0x00002000
+
+struct sonypi_event {
+ u8 data;
+ u8 event;
+};
+
+/* The set of possible button release events */
+static struct sonypi_event sonypi_releaseev[] = {
+ { 0x00, SONYPI_EVENT_ANYBUTTON_RELEASED },
+ { 0, 0 }
+};
+
+/* The set of possible jogger events */
+static struct sonypi_event sonypi_joggerev[] = {
+ { 0x1f, SONYPI_EVENT_JOGDIAL_UP },
+ { 0x01, SONYPI_EVENT_JOGDIAL_DOWN },
+ { 0x5f, SONYPI_EVENT_JOGDIAL_UP_PRESSED },
+ { 0x41, SONYPI_EVENT_JOGDIAL_DOWN_PRESSED },
+ { 0x1e, SONYPI_EVENT_JOGDIAL_FAST_UP },
+ { 0x02, SONYPI_EVENT_JOGDIAL_FAST_DOWN },
+ { 0x5e, SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED },
+ { 0x42, SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED },
+ { 0x1d, SONYPI_EVENT_JOGDIAL_VFAST_UP },
+ { 0x03, SONYPI_EVENT_JOGDIAL_VFAST_DOWN },
+ { 0x5d, SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED },
+ { 0x43, SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED },
+ { 0x40, SONYPI_EVENT_JOGDIAL_PRESSED },
+ { 0, 0 }
+};
+
+/* The set of possible capture button events */
+static struct sonypi_event sonypi_captureev[] = {
+ { 0x05, SONYPI_EVENT_CAPTURE_PARTIALPRESSED },
+ { 0x07, SONYPI_EVENT_CAPTURE_PRESSED },
+ { 0x40, SONYPI_EVENT_CAPTURE_PRESSED },
+ { 0x01, SONYPI_EVENT_CAPTURE_PARTIALRELEASED },
+ { 0, 0 }
+};
+
+/* The set of possible fnkeys events */
+static struct sonypi_event sonypi_fnkeyev[] = {
+ { 0x10, SONYPI_EVENT_FNKEY_ESC },
+ { 0x11, SONYPI_EVENT_FNKEY_F1 },
+ { 0x12, SONYPI_EVENT_FNKEY_F2 },
+ { 0x13, SONYPI_EVENT_FNKEY_F3 },
+ { 0x14, SONYPI_EVENT_FNKEY_F4 },
+ { 0x15, SONYPI_EVENT_FNKEY_F5 },
+ { 0x16, SONYPI_EVENT_FNKEY_F6 },
+ { 0x17, SONYPI_EVENT_FNKEY_F7 },
+ { 0x18, SONYPI_EVENT_FNKEY_F8 },
+ { 0x19, SONYPI_EVENT_FNKEY_F9 },
+ { 0x1a, SONYPI_EVENT_FNKEY_F10 },
+ { 0x1b, SONYPI_EVENT_FNKEY_F11 },
+ { 0x1c, SONYPI_EVENT_FNKEY_F12 },
+ { 0x1f, SONYPI_EVENT_FNKEY_RELEASED },
+ { 0x21, SONYPI_EVENT_FNKEY_1 },
+ { 0x22, SONYPI_EVENT_FNKEY_2 },
+ { 0x31, SONYPI_EVENT_FNKEY_D },
+ { 0x32, SONYPI_EVENT_FNKEY_E },
+ { 0x33, SONYPI_EVENT_FNKEY_F },
+ { 0x34, SONYPI_EVENT_FNKEY_S },
+ { 0x35, SONYPI_EVENT_FNKEY_B },
+ { 0x36, SONYPI_EVENT_FNKEY_ONLY },
+ { 0, 0 }
+};
+
+/* The set of possible program key events */
+static struct sonypi_event sonypi_pkeyev[] = {
+ { 0x01, SONYPI_EVENT_PKEY_P1 },
+ { 0x02, SONYPI_EVENT_PKEY_P2 },
+ { 0x04, SONYPI_EVENT_PKEY_P3 },
+ { 0x20, SONYPI_EVENT_PKEY_P1 },
+ { 0, 0 }
+};
+
+/* The set of possible bluetooth events */
+static struct sonypi_event sonypi_blueev[] = {
+ { 0x55, SONYPI_EVENT_BLUETOOTH_PRESSED },
+ { 0x59, SONYPI_EVENT_BLUETOOTH_ON },
+ { 0x5a, SONYPI_EVENT_BLUETOOTH_OFF },
+ { 0, 0 }
+};
+
+/* The set of possible wireless events */
+static struct sonypi_event sonypi_wlessev[] = {
+ { 0x59, SONYPI_EVENT_IGNORE },
+ { 0x5a, SONYPI_EVENT_IGNORE },
+ { 0, 0 }
+};
+
+/* The set of possible back button events */
+static struct sonypi_event sonypi_backev[] = {
+ { 0x20, SONYPI_EVENT_BACK_PRESSED },
+ { 0, 0 }
+};
+
+/* The set of possible help button events */
+static struct sonypi_event sonypi_helpev[] = {
+ { 0x3b, SONYPI_EVENT_HELP_PRESSED },
+ { 0, 0 }
+};
+
+
+/* The set of possible lid events */
+static struct sonypi_event sonypi_lidev[] = {
+ { 0x51, SONYPI_EVENT_LID_CLOSED },
+ { 0x50, SONYPI_EVENT_LID_OPENED },
+ { 0, 0 }
+};
+
+/* The set of possible zoom events */
+static struct sonypi_event sonypi_zoomev[] = {
+ { 0x39, SONYPI_EVENT_ZOOM_PRESSED },
+ { 0x10, SONYPI_EVENT_ZOOM_IN_PRESSED },
+ { 0x20, SONYPI_EVENT_ZOOM_OUT_PRESSED },
+ { 0x04, SONYPI_EVENT_ZOOM_PRESSED },
+ { 0, 0 }
+};
+
+/* The set of possible thumbphrase events */
+static struct sonypi_event sonypi_thumbphraseev[] = {
+ { 0x3a, SONYPI_EVENT_THUMBPHRASE_PRESSED },
+ { 0, 0 }
+};
+
+/* The set of possible motioneye camera events */
+static struct sonypi_event sonypi_meyeev[] = {
+ { 0x00, SONYPI_EVENT_MEYE_FACE },
+ { 0x01, SONYPI_EVENT_MEYE_OPPOSITE },
+ { 0, 0 }
+};
+
+/* The set of possible memorystick events */
+static struct sonypi_event sonypi_memorystickev[] = {
+ { 0x53, SONYPI_EVENT_MEMORYSTICK_INSERT },
+ { 0x54, SONYPI_EVENT_MEMORYSTICK_EJECT },
+ { 0, 0 }
+};
+
+/* The set of possible battery events */
+static struct sonypi_event sonypi_batteryev[] = {
+ { 0x20, SONYPI_EVENT_BATTERY_INSERT },
+ { 0x30, SONYPI_EVENT_BATTERY_REMOVE },
+ { 0, 0 }
+};
+
+/* The set of possible volume events */
+static struct sonypi_event sonypi_volumeev[] = {
+ { 0x01, SONYPI_EVENT_VOLUME_INC_PRESSED },
+ { 0x02, SONYPI_EVENT_VOLUME_DEC_PRESSED },
+ { 0, 0 }
+};
+
+/* The set of possible brightness events */
+static struct sonypi_event sonypi_brightnessev[] = {
+ { 0x80, SONYPI_EVENT_BRIGHTNESS_PRESSED },
+ { 0, 0 }
+};
+
+static struct sonypi_eventtypes type1_events[] = {
+ { 0, 0xffffffff, sonypi_releaseev },
+ { 0x70, SONYPI_MEYE_MASK, sonypi_meyeev },
+ { 0x30, SONYPI_LID_MASK, sonypi_lidev },
+ { 0x60, SONYPI_CAPTURE_MASK, sonypi_captureev },
+ { 0x10, SONYPI_JOGGER_MASK, sonypi_joggerev },
+ { 0x20, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
+ { 0x30, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
+ { 0x40, SONYPI_PKEY_MASK, sonypi_pkeyev },
+ { 0x30, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
+ { 0x40, SONYPI_BATTERY_MASK, sonypi_batteryev },
+ { 0 },
+};
+static struct sonypi_eventtypes type2_events[] = {
+ { 0, 0xffffffff, sonypi_releaseev },
+ { 0x38, SONYPI_LID_MASK, sonypi_lidev },
+ { 0x11, SONYPI_JOGGER_MASK, sonypi_joggerev },
+ { 0x61, SONYPI_CAPTURE_MASK, sonypi_captureev },
+ { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
+ { 0x31, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
+ { 0x08, SONYPI_PKEY_MASK, sonypi_pkeyev },
+ { 0x11, SONYPI_BACK_MASK, sonypi_backev },
+ { 0x21, SONYPI_HELP_MASK, sonypi_helpev },
+ { 0x21, SONYPI_ZOOM_MASK, sonypi_zoomev },
+ { 0x20, SONYPI_THUMBPHRASE_MASK, sonypi_thumbphraseev },
+ { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
+ { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
+ { 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
+ { 0 },
+};
+static struct sonypi_eventtypes type3_events[] = {
+ { 0, 0xffffffff, sonypi_releaseev },
+ { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
+ { 0x31, SONYPI_WIRELESS_MASK, sonypi_wlessev },
+ { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
+ { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
+ { 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
+ { 0x05, SONYPI_PKEY_MASK, sonypi_pkeyev },
+ { 0x05, SONYPI_ZOOM_MASK, sonypi_zoomev },
+ { 0x05, SONYPI_CAPTURE_MASK, sonypi_captureev },
+ { 0x05, SONYPI_PKEY_MASK, sonypi_volumeev },
+ { 0x05, SONYPI_PKEY_MASK, sonypi_brightnessev },
+ { 0 },
+};
+
+/* low level spic calls */
+#define ITERATIONS_LONG 10000
+#define ITERATIONS_SHORT 10
+#define wait_on_command(command, iterations) { \
+ unsigned int n = iterations; \
+ while (--n && (command)) \
+ udelay(1); \
+ if (!n) \
+ dprintk("command failed at %s : %s (line %d)\n", \
+ __FILE__, __func__, __LINE__); \
+}
+
+static u8 sony_pic_call1(u8 dev)
+{
+ u8 v1, v2;
+
+ wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
+ ITERATIONS_LONG);
+ outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
+ v1 = inb_p(spic_dev.cur_ioport->io1.minimum + 4);
+ v2 = inb_p(spic_dev.cur_ioport->io1.minimum);
+ dprintk("sony_pic_call1(0x%.2x): 0x%.4x\n", dev, (v2 << 8) | v1);
+ return v2;
+}
+
+static u8 sony_pic_call2(u8 dev, u8 fn)
+{
+ u8 v1;
+
+ wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
+ ITERATIONS_LONG);
+ outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
+ wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
+ ITERATIONS_LONG);
+ outb(fn, spic_dev.cur_ioport->io1.minimum);
+ v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
+ dprintk("sony_pic_call2(0x%.2x - 0x%.2x): 0x%.4x\n", dev, fn, v1);
+ return v1;
+}
+
+static u8 sony_pic_call3(u8 dev, u8 fn, u8 v)
+{
+ u8 v1;
+
+ wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
+ outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
+ wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
+ outb(fn, spic_dev.cur_ioport->io1.minimum);
+ wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
+ outb(v, spic_dev.cur_ioport->io1.minimum);
+ v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
+ dprintk("sony_pic_call3(0x%.2x - 0x%.2x - 0x%.2x): 0x%.4x\n",
+ dev, fn, v, v1);
+ return v1;
+}
+
+/*
+ * minidrivers for SPIC models
+ */
+static int type3_handle_irq(const u8 data_mask, const u8 ev)
+{
+ /*
+ * 0x31 could mean we have to take some extra action and wait for
+ * the next irq for some Type3 models, it will generate a new
+ * irq and we can read new data from the device:
+ * - 0x5c and 0x5f requires 0xA0
+ * - 0x61 requires 0xB3
+ */
+ if (data_mask == 0x31) {
+ if (ev == 0x5c || ev == 0x5f)
+ sony_pic_call1(0xA0);
+ else if (ev == 0x61)
+ sony_pic_call1(0xB3);
+ return 0;
+ }
+ return 1;
+}
+
+static void sony_pic_detect_device_type(struct sony_pic_dev *dev)
+{
+ struct pci_dev *pcidev;
+
+ pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_82371AB_3, NULL);
+ if (pcidev) {
+ dev->model = SONYPI_DEVICE_TYPE1;
+ dev->evport_offset = SONYPI_TYPE1_OFFSET;
+ dev->event_types = type1_events;
+ goto out;
+ }
+
+ pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_ICH6_1, NULL);
+ if (pcidev) {
+ dev->model = SONYPI_DEVICE_TYPE2;
+ dev->evport_offset = SONYPI_TYPE2_OFFSET;
+ dev->event_types = type2_events;
+ goto out;
+ }
+
+ pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_ICH7_1, NULL);
+ if (pcidev) {
+ dev->model = SONYPI_DEVICE_TYPE3;
+ dev->handle_irq = type3_handle_irq;
+ dev->evport_offset = SONYPI_TYPE3_OFFSET;
+ dev->event_types = type3_events;
+ goto out;
+ }
+
+ pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_ICH8_4, NULL);
+ if (pcidev) {
+ dev->model = SONYPI_DEVICE_TYPE3;
+ dev->handle_irq = type3_handle_irq;
+ dev->evport_offset = SONYPI_TYPE3_OFFSET;
+ dev->event_types = type3_events;
+ goto out;
+ }
+
+ pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_ICH9_1, NULL);
+ if (pcidev) {
+ dev->model = SONYPI_DEVICE_TYPE3;
+ dev->handle_irq = type3_handle_irq;
+ dev->evport_offset = SONYPI_TYPE3_OFFSET;
+ dev->event_types = type3_events;
+ goto out;
+ }
+
+ /* default */
+ dev->model = SONYPI_DEVICE_TYPE2;
+ dev->evport_offset = SONYPI_TYPE2_OFFSET;
+ dev->event_types = type2_events;
+
+out:
+ pci_dev_put(pcidev);
+
+ pr_info("detected Type%d model\n",
+ dev->model == SONYPI_DEVICE_TYPE1 ? 1 :
+ dev->model == SONYPI_DEVICE_TYPE2 ? 2 : 3);
+}
+
+/* camera tests and poweron/poweroff */
+#define SONYPI_CAMERA_PICTURE 5
+#define SONYPI_CAMERA_CONTROL 0x10
+
+#define SONYPI_CAMERA_BRIGHTNESS 0
+#define SONYPI_CAMERA_CONTRAST 1
+#define SONYPI_CAMERA_HUE 2
+#define SONYPI_CAMERA_COLOR 3
+#define SONYPI_CAMERA_SHARPNESS 4
+
+#define SONYPI_CAMERA_EXPOSURE_MASK 0xC
+#define SONYPI_CAMERA_WHITE_BALANCE_MASK 0x3
+#define SONYPI_CAMERA_PICTURE_MODE_MASK 0x30
+#define SONYPI_CAMERA_MUTE_MASK 0x40
+
+/* the rest don't need a loop until not 0xff */
+#define SONYPI_CAMERA_AGC 6
+#define SONYPI_CAMERA_AGC_MASK 0x30
+#define SONYPI_CAMERA_SHUTTER_MASK 0x7
+
+#define SONYPI_CAMERA_SHUTDOWN_REQUEST 7
+#define SONYPI_CAMERA_CONTROL 0x10
+
+#define SONYPI_CAMERA_STATUS 7
+#define SONYPI_CAMERA_STATUS_READY 0x2
+#define SONYPI_CAMERA_STATUS_POSITION 0x4
+
+#define SONYPI_DIRECTION_BACKWARDS 0x4
+
+#define SONYPI_CAMERA_REVISION 8
+#define SONYPI_CAMERA_ROMVERSION 9
+
+static int __sony_pic_camera_ready(void)
+{
+ u8 v;
+
+ v = sony_pic_call2(0x8f, SONYPI_CAMERA_STATUS);
+ return (v != 0xff && (v & SONYPI_CAMERA_STATUS_READY));
+}
+
+static int __sony_pic_camera_off(void)
+{
+ if (!camera) {
+ pr_warn("camera control not enabled\n");
+ return -ENODEV;
+ }
+
+ wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE,
+ SONYPI_CAMERA_MUTE_MASK),
+ ITERATIONS_SHORT);
+
+ if (spic_dev.camera_power) {
+ sony_pic_call2(0x91, 0);
+ spic_dev.camera_power = 0;
+ }
+ return 0;
+}
+
+static int __sony_pic_camera_on(void)
+{
+ int i, j, x;
+
+ if (!camera) {
+ pr_warn("camera control not enabled\n");
+ return -ENODEV;
+ }
+
+ if (spic_dev.camera_power)
+ return 0;
+
+ for (j = 5; j > 0; j--) {
+
+ for (x = 0; x < 100 && sony_pic_call2(0x91, 0x1); x++)
+ msleep(10);
+ sony_pic_call1(0x93);
+
+ for (i = 400; i > 0; i--) {
+ if (__sony_pic_camera_ready())
+ break;
+ msleep(10);
+ }
+ if (i)
+ break;
+ }
+
+ if (j == 0) {
+ pr_warn("failed to power on camera\n");
+ return -ENODEV;
+ }
+
+ wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTROL,
+ 0x5a),
+ ITERATIONS_SHORT);
+
+ spic_dev.camera_power = 1;
+ return 0;
+}
+
+/* External camera command (exported to the motion eye v4l driver) */
+int sony_pic_camera_command(int command, u8 value)
+{
+ if (!camera)
+ return -EIO;
+
+ mutex_lock(&spic_dev.lock);
+
+ switch (command) {
+ case SONY_PIC_COMMAND_SETCAMERA:
+ if (value)
+ __sony_pic_camera_on();
+ else
+ __sony_pic_camera_off();
+ break;
+ case SONY_PIC_COMMAND_SETCAMERABRIGHTNESS:
+ wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_BRIGHTNESS, value),
+ ITERATIONS_SHORT);
+ break;
+ case SONY_PIC_COMMAND_SETCAMERACONTRAST:
+ wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTRAST, value),
+ ITERATIONS_SHORT);
+ break;
+ case SONY_PIC_COMMAND_SETCAMERAHUE:
+ wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_HUE, value),
+ ITERATIONS_SHORT);
+ break;
+ case SONY_PIC_COMMAND_SETCAMERACOLOR:
+ wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_COLOR, value),
+ ITERATIONS_SHORT);
+ break;
+ case SONY_PIC_COMMAND_SETCAMERASHARPNESS:
+ wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_SHARPNESS, value),
+ ITERATIONS_SHORT);
+ break;
+ case SONY_PIC_COMMAND_SETCAMERAPICTURE:
+ wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE, value),
+ ITERATIONS_SHORT);
+ break;
+ case SONY_PIC_COMMAND_SETCAMERAAGC:
+ wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_AGC, value),
+ ITERATIONS_SHORT);
+ break;
+ default:
+ pr_err("sony_pic_camera_command invalid: %d\n", command);
+ break;
+ }
+ mutex_unlock(&spic_dev.lock);
+ return 0;
+}
+EXPORT_SYMBOL(sony_pic_camera_command);
+
+/* gprs/edge modem (SZ460N and SZ210P), thanks to Joshua Wise */
+static void __sony_pic_set_wwanpower(u8 state)
+{
+ state = !!state;
+ if (spic_dev.wwan_power == state)
+ return;
+ sony_pic_call2(0xB0, state);
+ sony_pic_call1(0x82);
+ spic_dev.wwan_power = state;
+}
+
+static ssize_t sony_pic_wwanpower_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ unsigned long value;
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value))
+ return -EINVAL;
+
+ mutex_lock(&spic_dev.lock);
+ __sony_pic_set_wwanpower(value);
+ mutex_unlock(&spic_dev.lock);
+
+ return count;
+}
+
+static ssize_t sony_pic_wwanpower_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ ssize_t count;
+ mutex_lock(&spic_dev.lock);
+ count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.wwan_power);
+ mutex_unlock(&spic_dev.lock);
+ return count;
+}
+
+/* bluetooth subsystem power state */
+static void __sony_pic_set_bluetoothpower(u8 state)
+{
+ state = !!state;
+ if (spic_dev.bluetooth_power == state)
+ return;
+ sony_pic_call2(0x96, state);
+ sony_pic_call1(0x82);
+ spic_dev.bluetooth_power = state;
+}
+
+static ssize_t sony_pic_bluetoothpower_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ unsigned long value;
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value))
+ return -EINVAL;
+
+ mutex_lock(&spic_dev.lock);
+ __sony_pic_set_bluetoothpower(value);
+ mutex_unlock(&spic_dev.lock);
+
+ return count;
+}
+
+static ssize_t sony_pic_bluetoothpower_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ ssize_t count = 0;
+ mutex_lock(&spic_dev.lock);
+ count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.bluetooth_power);
+ mutex_unlock(&spic_dev.lock);
+ return count;
+}
+
+/* fan speed */
+/* FAN0 information (reverse engineered from ACPI tables) */
+#define SONY_PIC_FAN0_STATUS 0x93
+static int sony_pic_set_fanspeed(unsigned long value)
+{
+ return ec_write(SONY_PIC_FAN0_STATUS, value);
+}
+
+static int sony_pic_get_fanspeed(u8 *value)
+{
+ return ec_read(SONY_PIC_FAN0_STATUS, value);
+}
+
+static ssize_t sony_pic_fanspeed_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ unsigned long value;
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value))
+ return -EINVAL;
+
+ if (sony_pic_set_fanspeed(value))
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t sony_pic_fanspeed_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ u8 value = 0;
+ if (sony_pic_get_fanspeed(&value))
+ return -EIO;
+
+ return snprintf(buffer, PAGE_SIZE, "%d\n", value);
+}
+
+#define SPIC_ATTR(_name, _mode) \
+struct device_attribute spic_attr_##_name = __ATTR(_name, \
+ _mode, sony_pic_## _name ##_show, \
+ sony_pic_## _name ##_store)
+
+static SPIC_ATTR(bluetoothpower, 0644);
+static SPIC_ATTR(wwanpower, 0644);
+static SPIC_ATTR(fanspeed, 0644);
+
+static struct attribute *spic_attributes[] = {
+ &spic_attr_bluetoothpower.attr,
+ &spic_attr_wwanpower.attr,
+ &spic_attr_fanspeed.attr,
+ NULL
+};
+
+static struct attribute_group spic_attribute_group = {
+ .attrs = spic_attributes
+};
+
+/******** SONYPI compatibility **********/
+#ifdef CONFIG_SONYPI_COMPAT
+
+/* battery / brightness / temperature addresses */
+#define SONYPI_BAT_FLAGS 0x81
+#define SONYPI_LCD_LIGHT 0x96
+#define SONYPI_BAT1_PCTRM 0xa0
+#define SONYPI_BAT1_LEFT 0xa2
+#define SONYPI_BAT1_MAXRT 0xa4
+#define SONYPI_BAT2_PCTRM 0xa8
+#define SONYPI_BAT2_LEFT 0xaa
+#define SONYPI_BAT2_MAXRT 0xac
+#define SONYPI_BAT1_MAXTK 0xb0
+#define SONYPI_BAT1_FULL 0xb2
+#define SONYPI_BAT2_MAXTK 0xb8
+#define SONYPI_BAT2_FULL 0xba
+#define SONYPI_TEMP_STATUS 0xC1
+
+struct sonypi_compat_s {
+ struct fasync_struct *fifo_async;
+ struct kfifo fifo;
+ spinlock_t fifo_lock;
+ wait_queue_head_t fifo_proc_list;
+ atomic_t open_count;
+};
+static struct sonypi_compat_s sonypi_compat = {
+ .open_count = ATOMIC_INIT(0),
+};
+
+static int sonypi_misc_fasync(int fd, struct file *filp, int on)
+{
+ return fasync_helper(fd, filp, on, &sonypi_compat.fifo_async);
+}
+
+static int sonypi_misc_release(struct inode *inode, struct file *file)
+{
+ atomic_dec(&sonypi_compat.open_count);
+ return 0;
+}
+
+static int sonypi_misc_open(struct inode *inode, struct file *file)
+{
+ /* Flush input queue on first open */
+ unsigned long flags;
+
+ spin_lock_irqsave(&sonypi_compat.fifo_lock, flags);
+
+ if (atomic_inc_return(&sonypi_compat.open_count) == 1)
+ kfifo_reset(&sonypi_compat.fifo);
+
+ spin_unlock_irqrestore(&sonypi_compat.fifo_lock, flags);
+
+ return 0;
+}
+
+static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
+ size_t count, loff_t *pos)
+{
+ ssize_t ret;
+ unsigned char c;
+
+ if ((kfifo_len(&sonypi_compat.fifo) == 0) &&
+ (file->f_flags & O_NONBLOCK))
+ return -EAGAIN;
+
+ ret = wait_event_interruptible(sonypi_compat.fifo_proc_list,
+ kfifo_len(&sonypi_compat.fifo) != 0);
+ if (ret)
+ return ret;
+
+ while (ret < count &&
+ (kfifo_out_locked(&sonypi_compat.fifo, &c, sizeof(c),
+ &sonypi_compat.fifo_lock) == sizeof(c))) {
+ if (put_user(c, buf++))
+ return -EFAULT;
+ ret++;
+ }
+
+ if (ret > 0) {
+ struct inode *inode = file_inode(file);
+ inode->i_atime = current_fs_time(inode->i_sb);
+ }
+
+ return ret;
+}
+
+static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
+{
+ poll_wait(file, &sonypi_compat.fifo_proc_list, wait);
+ if (kfifo_len(&sonypi_compat.fifo))
+ return POLLIN | POLLRDNORM;
+ return 0;
+}
+
+static int ec_read16(u8 addr, u16 *value)
+{
+ u8 val_lb, val_hb;
+ if (ec_read(addr, &val_lb))
+ return -1;
+ if (ec_read(addr + 1, &val_hb))
+ return -1;
+ *value = val_lb | (val_hb << 8);
+ return 0;
+}
+
+static long sonypi_misc_ioctl(struct file *fp, unsigned int cmd,
+ unsigned long arg)
+{
+ int ret = 0;
+ void __user *argp = (void __user *)arg;
+ u8 val8;
+ u16 val16;
+ int value;
+
+ mutex_lock(&spic_dev.lock);
+ switch (cmd) {
+ case SONYPI_IOCGBRT:
+ if (sony_bl_props.dev == NULL) {
+ ret = -EIO;
+ break;
+ }
+ if (sony_nc_int_call(sony_nc_acpi_handle, "GBRT", NULL,
+ &value)) {
+ ret = -EIO;
+ break;
+ }
+ val8 = ((value & 0xff) - 1) << 5;
+ if (copy_to_user(argp, &val8, sizeof(val8)))
+ ret = -EFAULT;
+ break;
+ case SONYPI_IOCSBRT:
+ if (sony_bl_props.dev == NULL) {
+ ret = -EIO;
+ break;
+ }
+ if (copy_from_user(&val8, argp, sizeof(val8))) {
+ ret = -EFAULT;
+ break;
+ }
+ value = (val8 >> 5) + 1;
+ if (sony_nc_int_call(sony_nc_acpi_handle, "SBRT", &value,
+ NULL)) {
+ ret = -EIO;
+ break;
+ }
+ /* sync the backlight device status */
+ sony_bl_props.dev->props.brightness =
+ sony_backlight_get_brightness(sony_bl_props.dev);
+ break;
+ case SONYPI_IOCGBAT1CAP:
+ if (ec_read16(SONYPI_BAT1_FULL, &val16)) {
+ ret = -EIO;
+ break;
+ }
+ if (copy_to_user(argp, &val16, sizeof(val16)))
+ ret = -EFAULT;
+ break;
+ case SONYPI_IOCGBAT1REM:
+ if (ec_read16(SONYPI_BAT1_LEFT, &val16)) {
+ ret = -EIO;
+ break;
+ }
+ if (copy_to_user(argp, &val16, sizeof(val16)))
+ ret = -EFAULT;
+ break;
+ case SONYPI_IOCGBAT2CAP:
+ if (ec_read16(SONYPI_BAT2_FULL, &val16)) {
+ ret = -EIO;
+ break;
+ }
+ if (copy_to_user(argp, &val16, sizeof(val16)))
+ ret = -EFAULT;
+ break;
+ case SONYPI_IOCGBAT2REM:
+ if (ec_read16(SONYPI_BAT2_LEFT, &val16)) {
+ ret = -EIO;
+ break;
+ }
+ if (copy_to_user(argp, &val16, sizeof(val16)))
+ ret = -EFAULT;
+ break;
+ case SONYPI_IOCGBATFLAGS:
+ if (ec_read(SONYPI_BAT_FLAGS, &val8)) {
+ ret = -EIO;
+ break;
+ }
+ val8 &= 0x07;
+ if (copy_to_user(argp, &val8, sizeof(val8)))
+ ret = -EFAULT;
+ break;
+ case SONYPI_IOCGBLUE:
+ val8 = spic_dev.bluetooth_power;
+ if (copy_to_user(argp, &val8, sizeof(val8)))
+ ret = -EFAULT;
+ break;
+ case SONYPI_IOCSBLUE:
+ if (copy_from_user(&val8, argp, sizeof(val8))) {
+ ret = -EFAULT;
+ break;
+ }
+ __sony_pic_set_bluetoothpower(val8);
+ break;
+ /* FAN Controls */
+ case SONYPI_IOCGFAN:
+ if (sony_pic_get_fanspeed(&val8)) {
+ ret = -EIO;
+ break;
+ }
+ if (copy_to_user(argp, &val8, sizeof(val8)))
+ ret = -EFAULT;
+ break;
+ case SONYPI_IOCSFAN:
+ if (copy_from_user(&val8, argp, sizeof(val8))) {
+ ret = -EFAULT;
+ break;
+ }
+ if (sony_pic_set_fanspeed(val8))
+ ret = -EIO;
+ break;
+ /* GET Temperature (useful under APM) */
+ case SONYPI_IOCGTEMP:
+ if (ec_read(SONYPI_TEMP_STATUS, &val8)) {
+ ret = -EIO;
+ break;
+ }
+ if (copy_to_user(argp, &val8, sizeof(val8)))
+ ret = -EFAULT;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ mutex_unlock(&spic_dev.lock);
+ return ret;
+}
+
+static const struct file_operations sonypi_misc_fops = {
+ .owner = THIS_MODULE,
+ .read = sonypi_misc_read,
+ .poll = sonypi_misc_poll,
+ .open = sonypi_misc_open,
+ .release = sonypi_misc_release,
+ .fasync = sonypi_misc_fasync,
+ .unlocked_ioctl = sonypi_misc_ioctl,
+ .llseek = noop_llseek,
+};
+
+static struct miscdevice sonypi_misc_device = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "sonypi",
+ .fops = &sonypi_misc_fops,
+};
+
+static void sonypi_compat_report_event(u8 event)
+{
+ kfifo_in_locked(&sonypi_compat.fifo, (unsigned char *)&event,
+ sizeof(event), &sonypi_compat.fifo_lock);
+ kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
+ wake_up_interruptible(&sonypi_compat.fifo_proc_list);
+}
+
+static int sonypi_compat_init(void)
+{
+ int error;
+
+ spin_lock_init(&sonypi_compat.fifo_lock);
+ error =
+ kfifo_alloc(&sonypi_compat.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
+ if (error) {
+ pr_err("kfifo_alloc failed\n");
+ return error;
+ }
+
+ init_waitqueue_head(&sonypi_compat.fifo_proc_list);
+
+ if (minor != -1)
+ sonypi_misc_device.minor = minor;
+ error = misc_register(&sonypi_misc_device);
+ if (error) {
+ pr_err("misc_register failed\n");
+ goto err_free_kfifo;
+ }
+ if (minor == -1)
+ pr_info("device allocated minor is %d\n",
+ sonypi_misc_device.minor);
+
+ return 0;
+
+err_free_kfifo:
+ kfifo_free(&sonypi_compat.fifo);
+ return error;
+}
+
+static void sonypi_compat_exit(void)
+{
+ misc_deregister(&sonypi_misc_device);
+ kfifo_free(&sonypi_compat.fifo);
+}
+#else
+static int sonypi_compat_init(void) { return 0; }
+static void sonypi_compat_exit(void) { }
+static void sonypi_compat_report_event(u8 event) { }
+#endif /* CONFIG_SONYPI_COMPAT */
+
+/*
+ * ACPI callbacks
+ */
+static acpi_status
+sony_pic_read_possible_resource(struct acpi_resource *resource, void *context)
+{
+ u32 i;
+ struct sony_pic_dev *dev = (struct sony_pic_dev *)context;
+
+ switch (resource->type) {
+ case ACPI_RESOURCE_TYPE_START_DEPENDENT:
+ {
+ /* start IO enumeration */
+ struct sony_pic_ioport *ioport = kzalloc(sizeof(*ioport), GFP_KERNEL);
+ if (!ioport)
+ return AE_ERROR;
+
+ list_add(&ioport->list, &dev->ioports);
+ return AE_OK;
+ }
+
+ case ACPI_RESOURCE_TYPE_END_DEPENDENT:
+ /* end IO enumeration */
+ return AE_OK;
+
+ case ACPI_RESOURCE_TYPE_IRQ:
+ {
+ struct acpi_resource_irq *p = &resource->data.irq;
+ struct sony_pic_irq *interrupt = NULL;
+ if (!p || !p->interrupt_count) {
+ /*
+ * IRQ descriptors may have no IRQ# bits set,
+ * particularly those those w/ _STA disabled
+ */
+ dprintk("Blank IRQ resource\n");
+ return AE_OK;
+ }
+ for (i = 0; i < p->interrupt_count; i++) {
+ if (!p->interrupts[i]) {
+ pr_warn("Invalid IRQ %d\n",
+ p->interrupts[i]);
+ continue;
+ }
+ interrupt = kzalloc(sizeof(*interrupt),
+ GFP_KERNEL);
+ if (!interrupt)
+ return AE_ERROR;
+
+ list_add(&interrupt->list, &dev->interrupts);
+ interrupt->irq.triggering = p->triggering;
+ interrupt->irq.polarity = p->polarity;
+ interrupt->irq.sharable = p->sharable;
+ interrupt->irq.interrupt_count = 1;
+ interrupt->irq.interrupts[0] = p->interrupts[i];
+ }
+ return AE_OK;
+ }
+ case ACPI_RESOURCE_TYPE_IO:
+ {
+ struct acpi_resource_io *io = &resource->data.io;
+ struct sony_pic_ioport *ioport =
+ list_first_entry(&dev->ioports, struct sony_pic_ioport, list);
+ if (!io) {
+ dprintk("Blank IO resource\n");
+ return AE_OK;
+ }
+
+ if (!ioport->io1.minimum) {
+ memcpy(&ioport->io1, io, sizeof(*io));
+ dprintk("IO1 at 0x%.4x (0x%.2x)\n", ioport->io1.minimum,
+ ioport->io1.address_length);
+ }
+ else if (!ioport->io2.minimum) {
+ memcpy(&ioport->io2, io, sizeof(*io));
+ dprintk("IO2 at 0x%.4x (0x%.2x)\n", ioport->io2.minimum,
+ ioport->io2.address_length);
+ }
+ else {
+ pr_err("Unknown SPIC Type, more than 2 IO Ports\n");
+ return AE_ERROR;
+ }
+ return AE_OK;
+ }
+ default:
+ dprintk("Resource %d isn't an IRQ nor an IO port\n",
+ resource->type);
+
+ case ACPI_RESOURCE_TYPE_END_TAG:
+ return AE_OK;
+ }
+ return AE_CTRL_TERMINATE;
+}
+
+static int sony_pic_possible_resources(struct acpi_device *device)
+{
+ int result = 0;
+ acpi_status status = AE_OK;
+
+ if (!device)
+ return -EINVAL;
+
+ /* get device status */
+ /* see acpi_pci_link_get_current acpi_pci_link_get_possible */
+ dprintk("Evaluating _STA\n");
+ result = acpi_bus_get_status(device);
+ if (result) {
+ pr_warn("Unable to read status\n");
+ goto end;
+ }
+
+ if (!device->status.enabled)
+ dprintk("Device disabled\n");
+ else
+ dprintk("Device enabled\n");
+
+ /*
+ * Query and parse 'method'
+ */
+ dprintk("Evaluating %s\n", METHOD_NAME__PRS);
+ status = acpi_walk_resources(device->handle, METHOD_NAME__PRS,
+ sony_pic_read_possible_resource, &spic_dev);
+ if (ACPI_FAILURE(status)) {
+ pr_warn("Failure evaluating %s\n", METHOD_NAME__PRS);
+ result = -ENODEV;
+ }
+end:
+ return result;
+}
+
+/*
+ * Disable the spic device by calling its _DIS method
+ */
+static int sony_pic_disable(struct acpi_device *device)
+{
+ acpi_status ret = acpi_evaluate_object(device->handle, "_DIS", NULL,
+ NULL);
+
+ if (ACPI_FAILURE(ret) && ret != AE_NOT_FOUND)
+ return -ENXIO;
+
+ dprintk("Device disabled\n");
+ return 0;
+}
+
+
+/*
+ * Based on drivers/acpi/pci_link.c:acpi_pci_link_set
+ *
+ * Call _SRS to set current resources
+ */
+static int sony_pic_enable(struct acpi_device *device,
+ struct sony_pic_ioport *ioport, struct sony_pic_irq *irq)
+{
+ acpi_status status;
+ int result = 0;
+ /* Type 1 resource layout is:
+ * IO
+ * IO
+ * IRQNoFlags
+ * End
+ *
+ * Type 2 and 3 resource layout is:
+ * IO
+ * IRQNoFlags
+ * End
+ */
+ struct {
+ struct acpi_resource res1;
+ struct acpi_resource res2;
+ struct acpi_resource res3;
+ struct acpi_resource res4;
+ } *resource;
+ struct acpi_buffer buffer = { 0, NULL };
+
+ if (!ioport || !irq)
+ return -EINVAL;
+
+ /* init acpi_buffer */
+ resource = kzalloc(sizeof(*resource) + 1, GFP_KERNEL);
+ if (!resource)
+ return -ENOMEM;
+
+ buffer.length = sizeof(*resource) + 1;
+ buffer.pointer = resource;
+
+ /* setup Type 1 resources */
+ if (spic_dev.model == SONYPI_DEVICE_TYPE1) {
+
+ /* setup io resources */
+ resource->res1.type = ACPI_RESOURCE_TYPE_IO;
+ resource->res1.length = sizeof(struct acpi_resource);
+ memcpy(&resource->res1.data.io, &ioport->io1,
+ sizeof(struct acpi_resource_io));
+
+ resource->res2.type = ACPI_RESOURCE_TYPE_IO;
+ resource->res2.length = sizeof(struct acpi_resource);
+ memcpy(&resource->res2.data.io, &ioport->io2,
+ sizeof(struct acpi_resource_io));
+
+ /* setup irq resource */
+ resource->res3.type = ACPI_RESOURCE_TYPE_IRQ;
+ resource->res3.length = sizeof(struct acpi_resource);
+ memcpy(&resource->res3.data.irq, &irq->irq,
+ sizeof(struct acpi_resource_irq));
+ /* we requested a shared irq */
+ resource->res3.data.irq.sharable = ACPI_SHARED;
+
+ resource->res4.type = ACPI_RESOURCE_TYPE_END_TAG;
+ resource->res4.length = sizeof(struct acpi_resource);
+ }
+ /* setup Type 2/3 resources */
+ else {
+ /* setup io resource */
+ resource->res1.type = ACPI_RESOURCE_TYPE_IO;
+ resource->res1.length = sizeof(struct acpi_resource);
+ memcpy(&resource->res1.data.io, &ioport->io1,
+ sizeof(struct acpi_resource_io));
+
+ /* setup irq resource */
+ resource->res2.type = ACPI_RESOURCE_TYPE_IRQ;
+ resource->res2.length = sizeof(struct acpi_resource);
+ memcpy(&resource->res2.data.irq, &irq->irq,
+ sizeof(struct acpi_resource_irq));
+ /* we requested a shared irq */
+ resource->res2.data.irq.sharable = ACPI_SHARED;
+
+ resource->res3.type = ACPI_RESOURCE_TYPE_END_TAG;
+ resource->res3.length = sizeof(struct acpi_resource);
+ }
+
+ /* Attempt to set the resource */
+ dprintk("Evaluating _SRS\n");
+ status = acpi_set_current_resources(device->handle, &buffer);
+
+ /* check for total failure */
+ if (ACPI_FAILURE(status)) {
+ pr_err("Error evaluating _SRS\n");
+ result = -ENODEV;
+ goto end;
+ }
+
+ /* Necessary device initializations calls (from sonypi) */
+ sony_pic_call1(0x82);
+ sony_pic_call2(0x81, 0xff);
+ sony_pic_call1(compat ? 0x92 : 0x82);
+
+end:
+ kfree(resource);
+ return result;
+}
+
+/*****************
+ *
+ * ISR: some event is available
+ *
+ *****************/
+static irqreturn_t sony_pic_irq(int irq, void *dev_id)
+{
+ int i, j;
+ u8 ev = 0;
+ u8 data_mask = 0;
+ u8 device_event = 0;
+
+ struct sony_pic_dev *dev = (struct sony_pic_dev *) dev_id;
+
+ ev = inb_p(dev->cur_ioport->io1.minimum);
+ if (dev->cur_ioport->io2.minimum)
+ data_mask = inb_p(dev->cur_ioport->io2.minimum);
+ else
+ data_mask = inb_p(dev->cur_ioport->io1.minimum +
+ dev->evport_offset);
+
+ dprintk("event ([%.2x] [%.2x]) at port 0x%.4x(+0x%.2x)\n",
+ ev, data_mask, dev->cur_ioport->io1.minimum,
+ dev->evport_offset);
+
+ if (ev == 0x00 || ev == 0xff)
+ return IRQ_HANDLED;
+
+ for (i = 0; dev->event_types[i].mask; i++) {
+
+ if ((data_mask & dev->event_types[i].data) !=
+ dev->event_types[i].data)
+ continue;
+
+ if (!(mask & dev->event_types[i].mask))
+ continue;
+
+ for (j = 0; dev->event_types[i].events[j].event; j++) {
+ if (ev == dev->event_types[i].events[j].data) {
+ device_event =
+ dev->event_types[i].events[j].event;
+ /* some events may require ignoring */
+ if (!device_event)
+ return IRQ_HANDLED;
+ goto found;
+ }
+ }
+ }
+ /* Still not able to decode the event try to pass
+ * it over to the minidriver
+ */
+ if (dev->handle_irq && dev->handle_irq(data_mask, ev) == 0)
+ return IRQ_HANDLED;
+
+ dprintk("unknown event ([%.2x] [%.2x]) at port 0x%.4x(+0x%.2x)\n",
+ ev, data_mask, dev->cur_ioport->io1.minimum,
+ dev->evport_offset);
+ return IRQ_HANDLED;
+
+found:
+ sony_laptop_report_input_event(device_event);
+ sonypi_compat_report_event(device_event);
+ return IRQ_HANDLED;
+}
+
+/*****************
+ *
+ * ACPI driver
+ *
+ *****************/
+static int sony_pic_remove(struct acpi_device *device)
+{
+ struct sony_pic_ioport *io, *tmp_io;
+ struct sony_pic_irq *irq, *tmp_irq;
+
+ if (sony_pic_disable(device)) {
+ pr_err("Couldn't disable device\n");
+ return -ENXIO;
+ }
+
+ free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
+ release_region(spic_dev.cur_ioport->io1.minimum,
+ spic_dev.cur_ioport->io1.address_length);
+ if (spic_dev.cur_ioport->io2.minimum)
+ release_region(spic_dev.cur_ioport->io2.minimum,
+ spic_dev.cur_ioport->io2.address_length);
+
+ sonypi_compat_exit();
+
+ sony_laptop_remove_input();
+
+ /* pf attrs */
+ sysfs_remove_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
+ sony_pf_remove();
+
+ list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
+ list_del(&io->list);
+ kfree(io);
+ }
+ list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
+ list_del(&irq->list);
+ kfree(irq);
+ }
+ spic_dev.cur_ioport = NULL;
+ spic_dev.cur_irq = NULL;
+
+ dprintk(SONY_PIC_DRIVER_NAME " removed.\n");
+ return 0;
+}
+
+static int sony_pic_add(struct acpi_device *device)
+{
+ int result;
+ struct sony_pic_ioport *io, *tmp_io;
+ struct sony_pic_irq *irq, *tmp_irq;
+
+ spic_dev.acpi_dev = device;
+ strcpy(acpi_device_class(device), "sony/hotkey");
+ sony_pic_detect_device_type(&spic_dev);
+ mutex_init(&spic_dev.lock);
+
+ /* read _PRS resources */
+ result = sony_pic_possible_resources(device);
+ if (result) {
+ pr_err("Unable to read possible resources\n");
+ goto err_free_resources;
+ }
+
+ /* setup input devices and helper fifo */
+ result = sony_laptop_setup_input(device);
+ if (result) {
+ pr_err("Unable to create input devices\n");
+ goto err_free_resources;
+ }
+
+ result = sonypi_compat_init();
+ if (result)
+ goto err_remove_input;
+
+ /* request io port */
+ list_for_each_entry_reverse(io, &spic_dev.ioports, list) {
+ if (request_region(io->io1.minimum, io->io1.address_length,
+ "Sony Programmable I/O Device")) {
+ dprintk("I/O port1: 0x%.4x (0x%.4x) + 0x%.2x\n",
+ io->io1.minimum, io->io1.maximum,
+ io->io1.address_length);
+ /* Type 1 have 2 ioports */
+ if (io->io2.minimum) {
+ if (request_region(io->io2.minimum,
+ io->io2.address_length,
+ "Sony Programmable I/O Device")) {
+ dprintk("I/O port2: 0x%.4x (0x%.4x) + 0x%.2x\n",
+ io->io2.minimum, io->io2.maximum,
+ io->io2.address_length);
+ spic_dev.cur_ioport = io;
+ break;
+ }
+ else {
+ dprintk("Unable to get I/O port2: "
+ "0x%.4x (0x%.4x) + 0x%.2x\n",
+ io->io2.minimum, io->io2.maximum,
+ io->io2.address_length);
+ release_region(io->io1.minimum,
+ io->io1.address_length);
+ }
+ }
+ else {
+ spic_dev.cur_ioport = io;
+ break;
+ }
+ }
+ }
+ if (!spic_dev.cur_ioport) {
+ pr_err("Failed to request_region\n");
+ result = -ENODEV;
+ goto err_remove_compat;
+ }
+
+ /* request IRQ */
+ list_for_each_entry_reverse(irq, &spic_dev.interrupts, list) {
+ if (!request_irq(irq->irq.interrupts[0], sony_pic_irq,
+ 0, "sony-laptop", &spic_dev)) {
+ dprintk("IRQ: %d - triggering: %d - "
+ "polarity: %d - shr: %d\n",
+ irq->irq.interrupts[0],
+ irq->irq.triggering,
+ irq->irq.polarity,
+ irq->irq.sharable);
+ spic_dev.cur_irq = irq;
+ break;
+ }
+ }
+ if (!spic_dev.cur_irq) {
+ pr_err("Failed to request_irq\n");
+ result = -ENODEV;
+ goto err_release_region;
+ }
+
+ /* set resource status _SRS */
+ result = sony_pic_enable(device, spic_dev.cur_ioport, spic_dev.cur_irq);
+ if (result) {
+ pr_err("Couldn't enable device\n");
+ goto err_free_irq;
+ }
+
+ spic_dev.bluetooth_power = -1;
+ /* create device attributes */
+ result = sony_pf_add();
+ if (result)
+ goto err_disable_device;
+
+ result = sysfs_create_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
+ if (result)
+ goto err_remove_pf;
+
+ pr_info("SPIC setup done.\n");
+ return 0;
+
+err_remove_pf:
+ sony_pf_remove();
+
+err_disable_device:
+ sony_pic_disable(device);
+
+err_free_irq:
+ free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
+
+err_release_region:
+ release_region(spic_dev.cur_ioport->io1.minimum,
+ spic_dev.cur_ioport->io1.address_length);
+ if (spic_dev.cur_ioport->io2.minimum)
+ release_region(spic_dev.cur_ioport->io2.minimum,
+ spic_dev.cur_ioport->io2.address_length);
+
+err_remove_compat:
+ sonypi_compat_exit();
+
+err_remove_input:
+ sony_laptop_remove_input();
+
+err_free_resources:
+ list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
+ list_del(&io->list);
+ kfree(io);
+ }
+ list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
+ list_del(&irq->list);
+ kfree(irq);
+ }
+ spic_dev.cur_ioport = NULL;
+ spic_dev.cur_irq = NULL;
+
+ return result;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int sony_pic_suspend(struct device *dev)
+{
+ if (sony_pic_disable(to_acpi_device(dev)))
+ return -ENXIO;
+ return 0;
+}
+
+static int sony_pic_resume(struct device *dev)
+{
+ sony_pic_enable(to_acpi_device(dev),
+ spic_dev.cur_ioport, spic_dev.cur_irq);
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(sony_pic_pm, sony_pic_suspend, sony_pic_resume);
+
+static const struct acpi_device_id sony_pic_device_ids[] = {
+ {SONY_PIC_HID, 0},
+ {"", 0},
+};
+
+static struct acpi_driver sony_pic_driver = {
+ .name = SONY_PIC_DRIVER_NAME,
+ .class = SONY_PIC_CLASS,
+ .ids = sony_pic_device_ids,
+ .owner = THIS_MODULE,
+ .ops = {
+ .add = sony_pic_add,
+ .remove = sony_pic_remove,
+ },
+ .drv.pm = &sony_pic_pm,
+};
+
+static struct dmi_system_id __initdata sonypi_dmi_table[] = {
+ {
+ .ident = "Sony Vaio",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PCG-"),
+ },
+ },
+ {
+ .ident = "Sony Vaio",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-"),
+ },
+ },
+ { }
+};
+
+static int __init sony_laptop_init(void)
+{
+ int result;
+
+ if (!no_spic && dmi_check_system(sonypi_dmi_table)) {
+ result = acpi_bus_register_driver(&sony_pic_driver);
+ if (result) {
+ pr_err("Unable to register SPIC driver\n");
+ goto out;
+ }
+ spic_drv_registered = 1;
+ }
+
+ result = acpi_bus_register_driver(&sony_nc_driver);
+ if (result) {
+ pr_err("Unable to register SNC driver\n");
+ goto out_unregister_pic;
+ }
+
+ return 0;
+
+out_unregister_pic:
+ if (spic_drv_registered)
+ acpi_bus_unregister_driver(&sony_pic_driver);
+out:
+ return result;
+}
+
+static void __exit sony_laptop_exit(void)
+{
+ acpi_bus_unregister_driver(&sony_nc_driver);
+ if (spic_drv_registered)
+ acpi_bus_unregister_driver(&sony_pic_driver);
+}
+
+module_init(sony_laptop_init);
+module_exit(sony_laptop_exit);
diff --git a/drivers/platform/x86/tc1100-wmi.c b/drivers/platform/x86/tc1100-wmi.c
new file mode 100644
index 000000000..e36542564
--- /dev/null
+++ b/drivers/platform/x86/tc1100-wmi.c
@@ -0,0 +1,280 @@
+/*
+ * HP Compaq TC1100 Tablet WMI Extras Driver
+ *
+ * Copyright (C) 2007 Carlos Corbacho <carlos@strangeworlds.co.uk>
+ * Copyright (C) 2004 Jamey Hicks <jamey.hicks@hp.com>
+ * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/acpi.h>
+#include <linux/platform_device.h>
+
+#define GUID "C364AC71-36DB-495A-8494-B439D472A505"
+
+#define TC1100_INSTANCE_WIRELESS 1
+#define TC1100_INSTANCE_JOGDIAL 2
+
+MODULE_AUTHOR("Jamey Hicks, Carlos Corbacho");
+MODULE_DESCRIPTION("HP Compaq TC1100 Tablet WMI Extras");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("wmi:C364AC71-36DB-495A-8494-B439D472A505");
+
+static struct platform_device *tc1100_device;
+
+struct tc1100_data {
+ u32 wireless;
+ u32 jogdial;
+};
+
+static struct tc1100_data suspend_data;
+
+/* --------------------------------------------------------------------------
+ Device Management
+ -------------------------------------------------------------------------- */
+
+static int get_state(u32 *out, u8 instance)
+{
+ u32 tmp;
+ acpi_status status;
+ struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+
+ if (!out)
+ return -EINVAL;
+
+ if (instance > 2)
+ return -ENODEV;
+
+ status = wmi_query_block(GUID, instance, &result);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ obj = (union acpi_object *) result.pointer;
+ if (obj && obj->type == ACPI_TYPE_INTEGER) {
+ tmp = obj->integer.value;
+ } else {
+ tmp = 0;
+ }
+
+ if (result.length > 0 && result.pointer)
+ kfree(result.pointer);
+
+ switch (instance) {
+ case TC1100_INSTANCE_WIRELESS:
+ *out = (tmp == 3) ? 1 : 0;
+ return 0;
+ case TC1100_INSTANCE_JOGDIAL:
+ *out = (tmp == 1) ? 0 : 1;
+ return 0;
+ default:
+ return -ENODEV;
+ }
+}
+
+static int set_state(u32 *in, u8 instance)
+{
+ u32 value;
+ acpi_status status;
+ struct acpi_buffer input;
+
+ if (!in)
+ return -EINVAL;
+
+ if (instance > 2)
+ return -ENODEV;
+
+ switch (instance) {
+ case TC1100_INSTANCE_WIRELESS:
+ value = (*in) ? 1 : 2;
+ break;
+ case TC1100_INSTANCE_JOGDIAL:
+ value = (*in) ? 0 : 1;
+ break;
+ default:
+ return -ENODEV;
+ }
+
+ input.length = sizeof(u32);
+ input.pointer = &value;
+
+ status = wmi_set_block(GUID, instance, &input);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ return 0;
+}
+
+/* --------------------------------------------------------------------------
+ FS Interface (/sys)
+ -------------------------------------------------------------------------- */
+
+/*
+ * Read/ write bool sysfs macro
+ */
+#define show_set_bool(value, instance) \
+static ssize_t \
+show_bool_##value(struct device *dev, struct device_attribute *attr, \
+ char *buf) \
+{ \
+ u32 result; \
+ acpi_status status = get_state(&result, instance); \
+ if (ACPI_SUCCESS(status)) \
+ return sprintf(buf, "%d\n", result); \
+ return sprintf(buf, "Read error\n"); \
+} \
+\
+static ssize_t \
+set_bool_##value(struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ u32 tmp = simple_strtoul(buf, NULL, 10); \
+ acpi_status status = set_state(&tmp, instance); \
+ if (ACPI_FAILURE(status)) \
+ return -EINVAL; \
+ return count; \
+} \
+static DEVICE_ATTR(value, S_IRUGO | S_IWUSR, \
+ show_bool_##value, set_bool_##value);
+
+show_set_bool(wireless, TC1100_INSTANCE_WIRELESS);
+show_set_bool(jogdial, TC1100_INSTANCE_JOGDIAL);
+
+static struct attribute *tc1100_attributes[] = {
+ &dev_attr_wireless.attr,
+ &dev_attr_jogdial.attr,
+ NULL
+};
+
+static struct attribute_group tc1100_attribute_group = {
+ .attrs = tc1100_attributes,
+};
+
+/* --------------------------------------------------------------------------
+ Driver Model
+ -------------------------------------------------------------------------- */
+
+static int __init tc1100_probe(struct platform_device *device)
+{
+ return sysfs_create_group(&device->dev.kobj, &tc1100_attribute_group);
+}
+
+
+static int tc1100_remove(struct platform_device *device)
+{
+ sysfs_remove_group(&device->dev.kobj, &tc1100_attribute_group);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int tc1100_suspend(struct device *dev)
+{
+ int ret;
+
+ ret = get_state(&suspend_data.wireless, TC1100_INSTANCE_WIRELESS);
+ if (ret)
+ return ret;
+
+ ret = get_state(&suspend_data.jogdial, TC1100_INSTANCE_JOGDIAL);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int tc1100_resume(struct device *dev)
+{
+ int ret;
+
+ ret = set_state(&suspend_data.wireless, TC1100_INSTANCE_WIRELESS);
+ if (ret)
+ return ret;
+
+ ret = set_state(&suspend_data.jogdial, TC1100_INSTANCE_JOGDIAL);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static const struct dev_pm_ops tc1100_pm_ops = {
+ .suspend = tc1100_suspend,
+ .resume = tc1100_resume,
+ .freeze = tc1100_suspend,
+ .restore = tc1100_resume,
+};
+#endif
+
+static struct platform_driver tc1100_driver = {
+ .driver = {
+ .name = "tc1100-wmi",
+#ifdef CONFIG_PM
+ .pm = &tc1100_pm_ops,
+#endif
+ },
+ .remove = tc1100_remove,
+};
+
+static int __init tc1100_init(void)
+{
+ int error;
+
+ if (!wmi_has_guid(GUID))
+ return -ENODEV;
+
+ tc1100_device = platform_device_alloc("tc1100-wmi", -1);
+ if (!tc1100_device)
+ return -ENOMEM;
+
+ error = platform_device_add(tc1100_device);
+ if (error)
+ goto err_device_put;
+
+ error = platform_driver_probe(&tc1100_driver, tc1100_probe);
+ if (error)
+ goto err_device_del;
+
+ pr_info("HP Compaq TC1100 Tablet WMI Extras loaded\n");
+ return 0;
+
+ err_device_del:
+ platform_device_del(tc1100_device);
+ err_device_put:
+ platform_device_put(tc1100_device);
+ return error;
+}
+
+static void __exit tc1100_exit(void)
+{
+ platform_device_unregister(tc1100_device);
+ platform_driver_unregister(&tc1100_driver);
+}
+
+module_init(tc1100_init);
+module_exit(tc1100_exit);
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
new file mode 100644
index 000000000..28f328136
--- /dev/null
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -0,0 +1,9611 @@
+/*
+ * thinkpad_acpi.c - ThinkPad ACPI Extras
+ *
+ *
+ * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
+ * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define TPACPI_VERSION "0.25"
+#define TPACPI_SYSFS_VERSION 0x020700
+
+/*
+ * Changelog:
+ * 2007-10-20 changelog trimmed down
+ *
+ * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
+ * drivers/misc.
+ *
+ * 2006-11-22 0.13 new maintainer
+ * changelog now lives in git commit history, and will
+ * not be updated further in-file.
+ *
+ * 2005-03-17 0.11 support for 600e, 770x
+ * thanks to Jamie Lentin <lentinj@dial.pipex.com>
+ *
+ * 2005-01-16 0.9 use MODULE_VERSION
+ * thanks to Henrik Brix Andersen <brix@gentoo.org>
+ * fix parameter passing on module loading
+ * thanks to Rusty Russell <rusty@rustcorp.com.au>
+ * thanks to Jim Radford <radford@blackbean.org>
+ * 2004-11-08 0.8 fix init error case, don't return from a macro
+ * thanks to Chris Wright <chrisw@osdl.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/nvram.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/sysfs.h>
+#include <linux/backlight.h>
+#include <linux/fb.h>
+#include <linux/platform_device.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/input.h>
+#include <linux/leds.h>
+#include <linux/rfkill.h>
+#include <linux/dmi.h>
+#include <linux/jiffies.h>
+#include <linux/workqueue.h>
+#include <linux/acpi.h>
+#include <linux/pci_ids.h>
+#include <linux/thinkpad_acpi.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/initval.h>
+#include <asm/uaccess.h>
+
+/* ThinkPad CMOS commands */
+#define TP_CMOS_VOLUME_DOWN 0
+#define TP_CMOS_VOLUME_UP 1
+#define TP_CMOS_VOLUME_MUTE 2
+#define TP_CMOS_BRIGHTNESS_UP 4
+#define TP_CMOS_BRIGHTNESS_DOWN 5
+#define TP_CMOS_THINKLIGHT_ON 12
+#define TP_CMOS_THINKLIGHT_OFF 13
+
+/* NVRAM Addresses */
+enum tp_nvram_addr {
+ TP_NVRAM_ADDR_HK2 = 0x57,
+ TP_NVRAM_ADDR_THINKLIGHT = 0x58,
+ TP_NVRAM_ADDR_VIDEO = 0x59,
+ TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
+ TP_NVRAM_ADDR_MIXER = 0x60,
+};
+
+/* NVRAM bit masks */
+enum {
+ TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
+ TP_NVRAM_MASK_HKT_ZOOM = 0x20,
+ TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
+ TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
+ TP_NVRAM_MASK_THINKLIGHT = 0x10,
+ TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
+ TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
+ TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
+ TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
+ TP_NVRAM_MASK_MUTE = 0x40,
+ TP_NVRAM_MASK_HKT_VOLUME = 0x80,
+ TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
+ TP_NVRAM_POS_LEVEL_VOLUME = 0,
+};
+
+/* Misc NVRAM-related */
+enum {
+ TP_NVRAM_LEVEL_VOLUME_MAX = 14,
+};
+
+/* ACPI HIDs */
+#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
+#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
+#define TPACPI_ACPI_EC_HID "PNP0C09"
+
+/* Input IDs */
+#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
+#define TPACPI_HKEY_INPUT_VERSION 0x4101
+
+/* ACPI \WGSV commands */
+enum {
+ TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
+ TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
+ TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
+ TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
+};
+
+/* TP_ACPI_WGSV_GET_STATE bits */
+enum {
+ TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
+ TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
+ TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
+ TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
+ TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
+ TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
+ TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
+ TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
+ TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
+ TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
+};
+
+/* HKEY events */
+enum tpacpi_hkey_event_t {
+ /* Hotkey-related */
+ TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */
+ TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
+ TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
+ TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
+ TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
+ TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
+
+ /* Reasons for waking up from S3/S4 */
+ TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
+ TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
+ TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
+ TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
+ TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
+ TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
+
+ /* Auto-sleep after eject request */
+ TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
+ TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
+
+ /* Misc bay events */
+ TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
+ TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock
+ or port replicator */
+ TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
+ dock or port replicator */
+
+ /* User-interface events */
+ TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
+ TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
+ TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
+ TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
+ TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
+ TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
+ TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
+
+ /* Key-related user-interface events */
+ TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */
+ TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */
+ TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */
+
+ /* Thermal events */
+ TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
+ TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
+ TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
+ TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
+ TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */
+
+ /* AC-related events */
+ TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */
+
+ /* Misc */
+ TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
+};
+
+/****************************************************************************
+ * Main driver
+ */
+
+#define TPACPI_NAME "thinkpad"
+#define TPACPI_DESC "ThinkPad ACPI Extras"
+#define TPACPI_FILE TPACPI_NAME "_acpi"
+#define TPACPI_URL "http://ibm-acpi.sf.net/"
+#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
+
+#define TPACPI_PROC_DIR "ibm"
+#define TPACPI_ACPI_EVENT_PREFIX "ibm"
+#define TPACPI_DRVR_NAME TPACPI_FILE
+#define TPACPI_DRVR_SHORTNAME "tpacpi"
+#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
+
+#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
+#define TPACPI_WORKQUEUE_NAME "ktpacpid"
+
+#define TPACPI_MAX_ACPI_ARGS 3
+
+/* Debugging printk groups */
+#define TPACPI_DBG_ALL 0xffff
+#define TPACPI_DBG_DISCLOSETASK 0x8000
+#define TPACPI_DBG_INIT 0x0001
+#define TPACPI_DBG_EXIT 0x0002
+#define TPACPI_DBG_RFKILL 0x0004
+#define TPACPI_DBG_HKEY 0x0008
+#define TPACPI_DBG_FAN 0x0010
+#define TPACPI_DBG_BRGHT 0x0020
+#define TPACPI_DBG_MIXER 0x0040
+
+#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
+#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
+#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
+
+
+/****************************************************************************
+ * Driver-wide structs and misc. variables
+ */
+
+struct ibm_struct;
+
+struct tp_acpi_drv_struct {
+ const struct acpi_device_id *hid;
+ struct acpi_driver *driver;
+
+ void (*notify) (struct ibm_struct *, u32);
+ acpi_handle *handle;
+ u32 type;
+ struct acpi_device *device;
+};
+
+struct ibm_struct {
+ char *name;
+
+ int (*read) (struct seq_file *);
+ int (*write) (char *);
+ void (*exit) (void);
+ void (*resume) (void);
+ void (*suspend) (void);
+ void (*shutdown) (void);
+
+ struct list_head all_drivers;
+
+ struct tp_acpi_drv_struct *acpi;
+
+ struct {
+ u8 acpi_driver_registered:1;
+ u8 acpi_notify_installed:1;
+ u8 proc_created:1;
+ u8 init_called:1;
+ u8 experimental:1;
+ } flags;
+};
+
+struct ibm_init_struct {
+ char param[32];
+
+ int (*init) (struct ibm_init_struct *);
+ umode_t base_procfs_mode;
+ struct ibm_struct *data;
+};
+
+static struct {
+ u32 bluetooth:1;
+ u32 hotkey:1;
+ u32 hotkey_mask:1;
+ u32 hotkey_wlsw:1;
+ u32 hotkey_tablet:1;
+ u32 light:1;
+ u32 light_status:1;
+ u32 bright_acpimode:1;
+ u32 bright_unkfw:1;
+ u32 wan:1;
+ u32 uwb:1;
+ u32 fan_ctrl_status_undef:1;
+ u32 second_fan:1;
+ u32 beep_needs_two_args:1;
+ u32 mixer_no_level_control:1;
+ u32 input_device_registered:1;
+ u32 platform_drv_registered:1;
+ u32 platform_drv_attrs_registered:1;
+ u32 sensors_pdrv_registered:1;
+ u32 sensors_pdrv_attrs_registered:1;
+ u32 sensors_pdev_attrs_registered:1;
+ u32 hotkey_poll_active:1;
+ u32 has_adaptive_kbd:1;
+} tp_features;
+
+static struct {
+ u16 hotkey_mask_ff:1;
+ u16 volume_ctrl_forbidden:1;
+} tp_warned;
+
+struct thinkpad_id_data {
+ unsigned int vendor; /* ThinkPad vendor:
+ * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
+
+ char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
+ char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
+
+ u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
+ u16 ec_model;
+ u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
+ u16 ec_release;
+
+ char *model_str; /* ThinkPad T43 */
+ char *nummodel_str; /* 9384A9C for a 9384-A9C model */
+};
+static struct thinkpad_id_data thinkpad_id;
+
+static enum {
+ TPACPI_LIFE_INIT = 0,
+ TPACPI_LIFE_RUNNING,
+ TPACPI_LIFE_EXITING,
+} tpacpi_lifecycle;
+
+static int experimental;
+static u32 dbg_level;
+
+static struct workqueue_struct *tpacpi_wq;
+
+enum led_status_t {
+ TPACPI_LED_OFF = 0,
+ TPACPI_LED_ON,
+ TPACPI_LED_BLINK,
+};
+
+/* Special LED class that can defer work */
+struct tpacpi_led_classdev {
+ struct led_classdev led_classdev;
+ struct work_struct work;
+ enum led_status_t new_state;
+ int led;
+};
+
+/* brightness level capabilities */
+static unsigned int bright_maxlvl; /* 0 = unknown */
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+static int dbg_wlswemul;
+static bool tpacpi_wlsw_emulstate;
+static int dbg_bluetoothemul;
+static bool tpacpi_bluetooth_emulstate;
+static int dbg_wwanemul;
+static bool tpacpi_wwan_emulstate;
+static int dbg_uwbemul;
+static bool tpacpi_uwb_emulstate;
+#endif
+
+
+/*************************************************************************
+ * Debugging helpers
+ */
+
+#define dbg_printk(a_dbg_level, format, arg...) \
+do { \
+ if (dbg_level & (a_dbg_level)) \
+ printk(KERN_DEBUG pr_fmt("%s: " format), \
+ __func__, ##arg); \
+} while (0)
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUG
+#define vdbg_printk dbg_printk
+static const char *str_supported(int is_supported);
+#else
+static inline const char *str_supported(int is_supported) { return ""; }
+#define vdbg_printk(a_dbg_level, format, arg...) \
+ no_printk(format, ##arg)
+#endif
+
+static void tpacpi_log_usertask(const char * const what)
+{
+ printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
+ what, task_tgid_vnr(current));
+}
+
+#define tpacpi_disclose_usertask(what, format, arg...) \
+do { \
+ if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
+ (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
+ printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
+ what, task_tgid_vnr(current), ## arg); \
+ } \
+} while (0)
+
+/*
+ * Quirk handling helpers
+ *
+ * ThinkPad IDs and versions seen in the field so far
+ * are two-characters from the set [0-9A-Z], i.e. base 36.
+ *
+ * We use values well outside that range as specials.
+ */
+
+#define TPACPI_MATCH_ANY 0xffffU
+#define TPACPI_MATCH_UNKNOWN 0U
+
+/* TPID('1', 'Y') == 0x5931 */
+#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
+
+#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
+ { .vendor = PCI_VENDOR_ID_IBM, \
+ .bios = TPID(__id1, __id2), \
+ .ec = TPACPI_MATCH_ANY, \
+ .quirks = (__quirk) }
+
+#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
+ { .vendor = PCI_VENDOR_ID_LENOVO, \
+ .bios = TPID(__id1, __id2), \
+ .ec = TPACPI_MATCH_ANY, \
+ .quirks = (__quirk) }
+
+#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
+ { .vendor = PCI_VENDOR_ID_LENOVO, \
+ .bios = TPACPI_MATCH_ANY, \
+ .ec = TPID(__id1, __id2), \
+ .quirks = (__quirk) }
+
+struct tpacpi_quirk {
+ unsigned int vendor;
+ u16 bios;
+ u16 ec;
+ unsigned long quirks;
+};
+
+/**
+ * tpacpi_check_quirks() - search BIOS/EC version on a list
+ * @qlist: array of &struct tpacpi_quirk
+ * @qlist_size: number of elements in @qlist
+ *
+ * Iterates over a quirks list until one is found that matches the
+ * ThinkPad's vendor, BIOS and EC model.
+ *
+ * Returns 0 if nothing matches, otherwise returns the quirks field of
+ * the matching &struct tpacpi_quirk entry.
+ *
+ * The match criteria is: vendor, ec and bios much match.
+ */
+static unsigned long __init tpacpi_check_quirks(
+ const struct tpacpi_quirk *qlist,
+ unsigned int qlist_size)
+{
+ while (qlist_size) {
+ if ((qlist->vendor == thinkpad_id.vendor ||
+ qlist->vendor == TPACPI_MATCH_ANY) &&
+ (qlist->bios == thinkpad_id.bios_model ||
+ qlist->bios == TPACPI_MATCH_ANY) &&
+ (qlist->ec == thinkpad_id.ec_model ||
+ qlist->ec == TPACPI_MATCH_ANY))
+ return qlist->quirks;
+
+ qlist_size--;
+ qlist++;
+ }
+ return 0;
+}
+
+static inline bool __pure __init tpacpi_is_lenovo(void)
+{
+ return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
+}
+
+static inline bool __pure __init tpacpi_is_ibm(void)
+{
+ return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
+}
+
+/****************************************************************************
+ ****************************************************************************
+ *
+ * ACPI Helpers and device model
+ *
+ ****************************************************************************
+ ****************************************************************************/
+
+/*************************************************************************
+ * ACPI basic handles
+ */
+
+static acpi_handle root_handle;
+static acpi_handle ec_handle;
+
+#define TPACPI_HANDLE(object, parent, paths...) \
+ static acpi_handle object##_handle; \
+ static const acpi_handle * const object##_parent __initconst = \
+ &parent##_handle; \
+ static char *object##_paths[] __initdata = { paths }
+
+TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
+TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
+
+TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
+ /* T4x, X31, X40 */
+ "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
+ "\\CMS", /* R40, R40e */
+ ); /* all others */
+
+TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
+ "^HKEY", /* R30, R31 */
+ "HKEY", /* all others */
+ ); /* 570 */
+
+/*************************************************************************
+ * ACPI helpers
+ */
+
+static int acpi_evalf(acpi_handle handle,
+ int *res, char *method, char *fmt, ...)
+{
+ char *fmt0 = fmt;
+ struct acpi_object_list params;
+ union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
+ struct acpi_buffer result, *resultp;
+ union acpi_object out_obj;
+ acpi_status status;
+ va_list ap;
+ char res_type;
+ int success;
+ int quiet;
+
+ if (!*fmt) {
+ pr_err("acpi_evalf() called with empty format\n");
+ return 0;
+ }
+
+ if (*fmt == 'q') {
+ quiet = 1;
+ fmt++;
+ } else
+ quiet = 0;
+
+ res_type = *(fmt++);
+
+ params.count = 0;
+ params.pointer = &in_objs[0];
+
+ va_start(ap, fmt);
+ while (*fmt) {
+ char c = *(fmt++);
+ switch (c) {
+ case 'd': /* int */
+ in_objs[params.count].integer.value = va_arg(ap, int);
+ in_objs[params.count++].type = ACPI_TYPE_INTEGER;
+ break;
+ /* add more types as needed */
+ default:
+ pr_err("acpi_evalf() called "
+ "with invalid format character '%c'\n", c);
+ va_end(ap);
+ return 0;
+ }
+ }
+ va_end(ap);
+
+ if (res_type != 'v') {
+ result.length = sizeof(out_obj);
+ result.pointer = &out_obj;
+ resultp = &result;
+ } else
+ resultp = NULL;
+
+ status = acpi_evaluate_object(handle, method, &params, resultp);
+
+ switch (res_type) {
+ case 'd': /* int */
+ success = (status == AE_OK &&
+ out_obj.type == ACPI_TYPE_INTEGER);
+ if (success && res)
+ *res = out_obj.integer.value;
+ break;
+ case 'v': /* void */
+ success = status == AE_OK;
+ break;
+ /* add more types as needed */
+ default:
+ pr_err("acpi_evalf() called "
+ "with invalid format character '%c'\n", res_type);
+ return 0;
+ }
+
+ if (!success && !quiet)
+ pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
+ method, fmt0, acpi_format_exception(status));
+
+ return success;
+}
+
+static int acpi_ec_read(int i, u8 *p)
+{
+ int v;
+
+ if (ecrd_handle) {
+ if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
+ return 0;
+ *p = v;
+ } else {
+ if (ec_read(i, p) < 0)
+ return 0;
+ }
+
+ return 1;
+}
+
+static int acpi_ec_write(int i, u8 v)
+{
+ if (ecwr_handle) {
+ if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
+ return 0;
+ } else {
+ if (ec_write(i, v) < 0)
+ return 0;
+ }
+
+ return 1;
+}
+
+static int issue_thinkpad_cmos_command(int cmos_cmd)
+{
+ if (!cmos_handle)
+ return -ENXIO;
+
+ if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
+ return -EIO;
+
+ return 0;
+}
+
+/*************************************************************************
+ * ACPI device model
+ */
+
+#define TPACPI_ACPIHANDLE_INIT(object) \
+ drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
+ object##_paths, ARRAY_SIZE(object##_paths))
+
+static void __init drv_acpi_handle_init(const char *name,
+ acpi_handle *handle, const acpi_handle parent,
+ char **paths, const int num_paths)
+{
+ int i;
+ acpi_status status;
+
+ vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
+ name);
+
+ for (i = 0; i < num_paths; i++) {
+ status = acpi_get_handle(parent, paths[i], handle);
+ if (ACPI_SUCCESS(status)) {
+ dbg_printk(TPACPI_DBG_INIT,
+ "Found ACPI handle %s for %s\n",
+ paths[i], name);
+ return;
+ }
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
+ name);
+ *handle = NULL;
+}
+
+static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
+ u32 level, void *context, void **return_value)
+{
+ struct acpi_device *dev;
+ if (!strcmp(context, "video")) {
+ if (acpi_bus_get_device(handle, &dev))
+ return AE_OK;
+ if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
+ return AE_OK;
+ }
+
+ *(acpi_handle *)return_value = handle;
+
+ return AE_CTRL_TERMINATE;
+}
+
+static void __init tpacpi_acpi_handle_locate(const char *name,
+ const char *hid,
+ acpi_handle *handle)
+{
+ acpi_status status;
+ acpi_handle device_found;
+
+ BUG_ON(!name || !handle);
+ vdbg_printk(TPACPI_DBG_INIT,
+ "trying to locate ACPI handle for %s, using HID %s\n",
+ name, hid ? hid : "NULL");
+
+ memset(&device_found, 0, sizeof(device_found));
+ status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
+ (void *)name, &device_found);
+
+ *handle = NULL;
+
+ if (ACPI_SUCCESS(status)) {
+ *handle = device_found;
+ dbg_printk(TPACPI_DBG_INIT,
+ "Found ACPI handle for %s\n", name);
+ } else {
+ vdbg_printk(TPACPI_DBG_INIT,
+ "Could not locate an ACPI handle for %s: %s\n",
+ name, acpi_format_exception(status));
+ }
+}
+
+static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct ibm_struct *ibm = data;
+
+ if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
+ return;
+
+ if (!ibm || !ibm->acpi || !ibm->acpi->notify)
+ return;
+
+ ibm->acpi->notify(ibm, event);
+}
+
+static int __init setup_acpi_notify(struct ibm_struct *ibm)
+{
+ acpi_status status;
+ int rc;
+
+ BUG_ON(!ibm->acpi);
+
+ if (!*ibm->acpi->handle)
+ return 0;
+
+ vdbg_printk(TPACPI_DBG_INIT,
+ "setting up ACPI notify for %s\n", ibm->name);
+
+ rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
+ if (rc < 0) {
+ pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc);
+ return -ENODEV;
+ }
+
+ ibm->acpi->device->driver_data = ibm;
+ sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
+ TPACPI_ACPI_EVENT_PREFIX,
+ ibm->name);
+
+ status = acpi_install_notify_handler(*ibm->acpi->handle,
+ ibm->acpi->type, dispatch_acpi_notify, ibm);
+ if (ACPI_FAILURE(status)) {
+ if (status == AE_ALREADY_EXISTS) {
+ pr_notice("another device driver is already "
+ "handling %s events\n", ibm->name);
+ } else {
+ pr_err("acpi_install_notify_handler(%s) failed: %s\n",
+ ibm->name, acpi_format_exception(status));
+ }
+ return -ENODEV;
+ }
+ ibm->flags.acpi_notify_installed = 1;
+ return 0;
+}
+
+static int __init tpacpi_device_add(struct acpi_device *device)
+{
+ return 0;
+}
+
+static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
+{
+ int rc;
+
+ dbg_printk(TPACPI_DBG_INIT,
+ "registering %s as an ACPI driver\n", ibm->name);
+
+ BUG_ON(!ibm->acpi);
+
+ ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
+ if (!ibm->acpi->driver) {
+ pr_err("failed to allocate memory for ibm->acpi->driver\n");
+ return -ENOMEM;
+ }
+
+ sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
+ ibm->acpi->driver->ids = ibm->acpi->hid;
+
+ ibm->acpi->driver->ops.add = &tpacpi_device_add;
+
+ rc = acpi_bus_register_driver(ibm->acpi->driver);
+ if (rc < 0) {
+ pr_err("acpi_bus_register_driver(%s) failed: %d\n",
+ ibm->name, rc);
+ kfree(ibm->acpi->driver);
+ ibm->acpi->driver = NULL;
+ } else if (!rc)
+ ibm->flags.acpi_driver_registered = 1;
+
+ return rc;
+}
+
+
+/****************************************************************************
+ ****************************************************************************
+ *
+ * Procfs Helpers
+ *
+ ****************************************************************************
+ ****************************************************************************/
+
+static int dispatch_proc_show(struct seq_file *m, void *v)
+{
+ struct ibm_struct *ibm = m->private;
+
+ if (!ibm || !ibm->read)
+ return -EINVAL;
+ return ibm->read(m);
+}
+
+static int dispatch_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, dispatch_proc_show, PDE_DATA(inode));
+}
+
+static ssize_t dispatch_proc_write(struct file *file,
+ const char __user *userbuf,
+ size_t count, loff_t *pos)
+{
+ struct ibm_struct *ibm = PDE_DATA(file_inode(file));
+ char *kernbuf;
+ int ret;
+
+ if (!ibm || !ibm->write)
+ return -EINVAL;
+ if (count > PAGE_SIZE - 2)
+ return -EINVAL;
+
+ kernbuf = kmalloc(count + 2, GFP_KERNEL);
+ if (!kernbuf)
+ return -ENOMEM;
+
+ if (copy_from_user(kernbuf, userbuf, count)) {
+ kfree(kernbuf);
+ return -EFAULT;
+ }
+
+ kernbuf[count] = 0;
+ strcat(kernbuf, ",");
+ ret = ibm->write(kernbuf);
+ if (ret == 0)
+ ret = count;
+
+ kfree(kernbuf);
+
+ return ret;
+}
+
+static const struct file_operations dispatch_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = dispatch_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = dispatch_proc_write,
+};
+
+static char *next_cmd(char **cmds)
+{
+ char *start = *cmds;
+ char *end;
+
+ while ((end = strchr(start, ',')) && end == start)
+ start = end + 1;
+
+ if (!end)
+ return NULL;
+
+ *end = 0;
+ *cmds = end + 1;
+ return start;
+}
+
+
+/****************************************************************************
+ ****************************************************************************
+ *
+ * Device model: input, hwmon and platform
+ *
+ ****************************************************************************
+ ****************************************************************************/
+
+static struct platform_device *tpacpi_pdev;
+static struct platform_device *tpacpi_sensors_pdev;
+static struct device *tpacpi_hwmon;
+static struct input_dev *tpacpi_inputdev;
+static struct mutex tpacpi_inputdev_send_mutex;
+static LIST_HEAD(tpacpi_all_drivers);
+
+#ifdef CONFIG_PM_SLEEP
+static int tpacpi_suspend_handler(struct device *dev)
+{
+ struct ibm_struct *ibm, *itmp;
+
+ list_for_each_entry_safe(ibm, itmp,
+ &tpacpi_all_drivers,
+ all_drivers) {
+ if (ibm->suspend)
+ (ibm->suspend)();
+ }
+
+ return 0;
+}
+
+static int tpacpi_resume_handler(struct device *dev)
+{
+ struct ibm_struct *ibm, *itmp;
+
+ list_for_each_entry_safe(ibm, itmp,
+ &tpacpi_all_drivers,
+ all_drivers) {
+ if (ibm->resume)
+ (ibm->resume)();
+ }
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(tpacpi_pm,
+ tpacpi_suspend_handler, tpacpi_resume_handler);
+
+static void tpacpi_shutdown_handler(struct platform_device *pdev)
+{
+ struct ibm_struct *ibm, *itmp;
+
+ list_for_each_entry_safe(ibm, itmp,
+ &tpacpi_all_drivers,
+ all_drivers) {
+ if (ibm->shutdown)
+ (ibm->shutdown)();
+ }
+}
+
+static struct platform_driver tpacpi_pdriver = {
+ .driver = {
+ .name = TPACPI_DRVR_NAME,
+ .pm = &tpacpi_pm,
+ },
+ .shutdown = tpacpi_shutdown_handler,
+};
+
+static struct platform_driver tpacpi_hwmon_pdriver = {
+ .driver = {
+ .name = TPACPI_HWMON_DRVR_NAME,
+ },
+};
+
+/*************************************************************************
+ * sysfs support helpers
+ */
+
+struct attribute_set {
+ unsigned int members, max_members;
+ struct attribute_group group;
+};
+
+struct attribute_set_obj {
+ struct attribute_set s;
+ struct attribute *a;
+} __attribute__((packed));
+
+static struct attribute_set *create_attr_set(unsigned int max_members,
+ const char *name)
+{
+ struct attribute_set_obj *sobj;
+
+ if (max_members == 0)
+ return NULL;
+
+ /* Allocates space for implicit NULL at the end too */
+ sobj = kzalloc(sizeof(struct attribute_set_obj) +
+ max_members * sizeof(struct attribute *),
+ GFP_KERNEL);
+ if (!sobj)
+ return NULL;
+ sobj->s.max_members = max_members;
+ sobj->s.group.attrs = &sobj->a;
+ sobj->s.group.name = name;
+
+ return &sobj->s;
+}
+
+#define destroy_attr_set(_set) \
+ kfree(_set);
+
+/* not multi-threaded safe, use it in a single thread per set */
+static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
+{
+ if (!s || !attr)
+ return -EINVAL;
+
+ if (s->members >= s->max_members)
+ return -ENOMEM;
+
+ s->group.attrs[s->members] = attr;
+ s->members++;
+
+ return 0;
+}
+
+static int add_many_to_attr_set(struct attribute_set *s,
+ struct attribute **attr,
+ unsigned int count)
+{
+ int i, res;
+
+ for (i = 0; i < count; i++) {
+ res = add_to_attr_set(s, attr[i]);
+ if (res)
+ return res;
+ }
+
+ return 0;
+}
+
+static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
+{
+ sysfs_remove_group(kobj, &s->group);
+ destroy_attr_set(s);
+}
+
+#define register_attr_set_with_sysfs(_attr_set, _kobj) \
+ sysfs_create_group(_kobj, &_attr_set->group)
+
+static int parse_strtoul(const char *buf,
+ unsigned long max, unsigned long *value)
+{
+ char *endp;
+
+ *value = simple_strtoul(skip_spaces(buf), &endp, 0);
+ endp = skip_spaces(endp);
+ if (*endp || *value > max)
+ return -EINVAL;
+
+ return 0;
+}
+
+static void tpacpi_disable_brightness_delay(void)
+{
+ if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
+ pr_notice("ACPI backlight control delay disabled\n");
+}
+
+static void printk_deprecated_attribute(const char * const what,
+ const char * const details)
+{
+ tpacpi_log_usertask("deprecated sysfs attribute");
+ pr_warn("WARNING: sysfs attribute %s is deprecated and "
+ "will be removed. %s\n",
+ what, details);
+}
+
+/*************************************************************************
+ * rfkill and radio control support helpers
+ */
+
+/*
+ * ThinkPad-ACPI firmware handling model:
+ *
+ * WLSW (master wireless switch) is event-driven, and is common to all
+ * firmware-controlled radios. It cannot be controlled, just monitored,
+ * as expected. It overrides all radio state in firmware
+ *
+ * The kernel, a masked-off hotkey, and WLSW can change the radio state
+ * (TODO: verify how WLSW interacts with the returned radio state).
+ *
+ * The only time there are shadow radio state changes, is when
+ * masked-off hotkeys are used.
+ */
+
+/*
+ * Internal driver API for radio state:
+ *
+ * int: < 0 = error, otherwise enum tpacpi_rfkill_state
+ * bool: true means radio blocked (off)
+ */
+enum tpacpi_rfkill_state {
+ TPACPI_RFK_RADIO_OFF = 0,
+ TPACPI_RFK_RADIO_ON
+};
+
+/* rfkill switches */
+enum tpacpi_rfk_id {
+ TPACPI_RFK_BLUETOOTH_SW_ID = 0,
+ TPACPI_RFK_WWAN_SW_ID,
+ TPACPI_RFK_UWB_SW_ID,
+ TPACPI_RFK_SW_MAX
+};
+
+static const char *tpacpi_rfkill_names[] = {
+ [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
+ [TPACPI_RFK_WWAN_SW_ID] = "wwan",
+ [TPACPI_RFK_UWB_SW_ID] = "uwb",
+ [TPACPI_RFK_SW_MAX] = NULL
+};
+
+/* ThinkPad-ACPI rfkill subdriver */
+struct tpacpi_rfk {
+ struct rfkill *rfkill;
+ enum tpacpi_rfk_id id;
+ const struct tpacpi_rfk_ops *ops;
+};
+
+struct tpacpi_rfk_ops {
+ /* firmware interface */
+ int (*get_status)(void);
+ int (*set_status)(const enum tpacpi_rfkill_state);
+};
+
+static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
+
+/* Query FW and update rfkill sw state for a given rfkill switch */
+static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
+{
+ int status;
+
+ if (!tp_rfk)
+ return -ENODEV;
+
+ status = (tp_rfk->ops->get_status)();
+ if (status < 0)
+ return status;
+
+ rfkill_set_sw_state(tp_rfk->rfkill,
+ (status == TPACPI_RFK_RADIO_OFF));
+
+ return status;
+}
+
+/* Query FW and update rfkill sw state for all rfkill switches */
+static void tpacpi_rfk_update_swstate_all(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
+ tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
+}
+
+/*
+ * Sync the HW-blocking state of all rfkill switches,
+ * do notice it causes the rfkill core to schedule uevents
+ */
+static void tpacpi_rfk_update_hwblock_state(bool blocked)
+{
+ unsigned int i;
+ struct tpacpi_rfk *tp_rfk;
+
+ for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
+ tp_rfk = tpacpi_rfkill_switches[i];
+ if (tp_rfk) {
+ if (rfkill_set_hw_state(tp_rfk->rfkill,
+ blocked)) {
+ /* ignore -- we track sw block */
+ }
+ }
+ }
+}
+
+/* Call to get the WLSW state from the firmware */
+static int hotkey_get_wlsw(void);
+
+/* Call to query WLSW state and update all rfkill switches */
+static bool tpacpi_rfk_check_hwblock_state(void)
+{
+ int res = hotkey_get_wlsw();
+ int hw_blocked;
+
+ /* When unknown or unsupported, we have to assume it is unblocked */
+ if (res < 0)
+ return false;
+
+ hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
+ tpacpi_rfk_update_hwblock_state(hw_blocked);
+
+ return hw_blocked;
+}
+
+static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
+{
+ struct tpacpi_rfk *tp_rfk = data;
+ int res;
+
+ dbg_printk(TPACPI_DBG_RFKILL,
+ "request to change radio state to %s\n",
+ blocked ? "blocked" : "unblocked");
+
+ /* try to set radio state */
+ res = (tp_rfk->ops->set_status)(blocked ?
+ TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
+
+ /* and update the rfkill core with whatever the FW really did */
+ tpacpi_rfk_update_swstate(tp_rfk);
+
+ return (res < 0) ? res : 0;
+}
+
+static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
+ .set_block = tpacpi_rfk_hook_set_block,
+};
+
+static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
+ const struct tpacpi_rfk_ops *tp_rfkops,
+ const enum rfkill_type rfktype,
+ const char *name,
+ const bool set_default)
+{
+ struct tpacpi_rfk *atp_rfk;
+ int res;
+ bool sw_state = false;
+ bool hw_state;
+ int sw_status;
+
+ BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
+
+ atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
+ if (atp_rfk)
+ atp_rfk->rfkill = rfkill_alloc(name,
+ &tpacpi_pdev->dev,
+ rfktype,
+ &tpacpi_rfk_rfkill_ops,
+ atp_rfk);
+ if (!atp_rfk || !atp_rfk->rfkill) {
+ pr_err("failed to allocate memory for rfkill class\n");
+ kfree(atp_rfk);
+ return -ENOMEM;
+ }
+
+ atp_rfk->id = id;
+ atp_rfk->ops = tp_rfkops;
+
+ sw_status = (tp_rfkops->get_status)();
+ if (sw_status < 0) {
+ pr_err("failed to read initial state for %s, error %d\n",
+ name, sw_status);
+ } else {
+ sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
+ if (set_default) {
+ /* try to keep the initial state, since we ask the
+ * firmware to preserve it across S5 in NVRAM */
+ rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
+ }
+ }
+ hw_state = tpacpi_rfk_check_hwblock_state();
+ rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
+
+ res = rfkill_register(atp_rfk->rfkill);
+ if (res < 0) {
+ pr_err("failed to register %s rfkill switch: %d\n", name, res);
+ rfkill_destroy(atp_rfk->rfkill);
+ kfree(atp_rfk);
+ return res;
+ }
+
+ tpacpi_rfkill_switches[id] = atp_rfk;
+
+ pr_info("rfkill switch %s: radio is %sblocked\n",
+ name, (sw_state || hw_state) ? "" : "un");
+ return 0;
+}
+
+static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
+{
+ struct tpacpi_rfk *tp_rfk;
+
+ BUG_ON(id >= TPACPI_RFK_SW_MAX);
+
+ tp_rfk = tpacpi_rfkill_switches[id];
+ if (tp_rfk) {
+ rfkill_unregister(tp_rfk->rfkill);
+ rfkill_destroy(tp_rfk->rfkill);
+ tpacpi_rfkill_switches[id] = NULL;
+ kfree(tp_rfk);
+ }
+}
+
+static void printk_deprecated_rfkill_attribute(const char * const what)
+{
+ printk_deprecated_attribute(what,
+ "Please switch to generic rfkill before year 2010");
+}
+
+/* sysfs <radio> enable ------------------------------------------------ */
+static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int status;
+
+ printk_deprecated_rfkill_attribute(attr->attr.name);
+
+ /* This is in the ABI... */
+ if (tpacpi_rfk_check_hwblock_state()) {
+ status = TPACPI_RFK_RADIO_OFF;
+ } else {
+ status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
+ if (status < 0)
+ return status;
+ }
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
+}
+
+static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+ int res;
+
+ printk_deprecated_rfkill_attribute(attr->attr.name);
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
+
+ /* This is in the ABI... */
+ if (tpacpi_rfk_check_hwblock_state() && !!t)
+ return -EPERM;
+
+ res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
+ tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
+
+ return (res < 0) ? res : count;
+}
+
+/* procfs -------------------------------------------------------------- */
+static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
+{
+ if (id >= TPACPI_RFK_SW_MAX)
+ seq_printf(m, "status:\t\tnot supported\n");
+ else {
+ int status;
+
+ /* This is in the ABI... */
+ if (tpacpi_rfk_check_hwblock_state()) {
+ status = TPACPI_RFK_RADIO_OFF;
+ } else {
+ status = tpacpi_rfk_update_swstate(
+ tpacpi_rfkill_switches[id]);
+ if (status < 0)
+ return status;
+ }
+
+ seq_printf(m, "status:\t\t%s\n",
+ (status == TPACPI_RFK_RADIO_ON) ?
+ "enabled" : "disabled");
+ seq_printf(m, "commands:\tenable, disable\n");
+ }
+
+ return 0;
+}
+
+static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
+{
+ char *cmd;
+ int status = -1;
+ int res = 0;
+
+ if (id >= TPACPI_RFK_SW_MAX)
+ return -ENODEV;
+
+ while ((cmd = next_cmd(&buf))) {
+ if (strlencmp(cmd, "enable") == 0)
+ status = TPACPI_RFK_RADIO_ON;
+ else if (strlencmp(cmd, "disable") == 0)
+ status = TPACPI_RFK_RADIO_OFF;
+ else
+ return -EINVAL;
+ }
+
+ if (status != -1) {
+ tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
+ (status == TPACPI_RFK_RADIO_ON) ?
+ "enable" : "disable",
+ tpacpi_rfkill_names[id]);
+ res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
+ tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
+ }
+
+ return res;
+}
+
+/*************************************************************************
+ * thinkpad-acpi driver attributes
+ */
+
+/* interface_version --------------------------------------------------- */
+static ssize_t tpacpi_driver_interface_version_show(
+ struct device_driver *drv,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
+}
+
+static DRIVER_ATTR(interface_version, S_IRUGO,
+ tpacpi_driver_interface_version_show, NULL);
+
+/* debug_level --------------------------------------------------------- */
+static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
+}
+
+static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 0xffff, &t))
+ return -EINVAL;
+
+ dbg_level = t;
+
+ return count;
+}
+
+static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
+ tpacpi_driver_debug_show, tpacpi_driver_debug_store);
+
+/* version ------------------------------------------------------------- */
+static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%s v%s\n",
+ TPACPI_DESC, TPACPI_VERSION);
+}
+
+static DRIVER_ATTR(version, S_IRUGO,
+ tpacpi_driver_version_show, NULL);
+
+/* --------------------------------------------------------------------- */
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+
+/* wlsw_emulstate ------------------------------------------------------ */
+static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
+}
+
+static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ if (tpacpi_wlsw_emulstate != !!t) {
+ tpacpi_wlsw_emulstate = !!t;
+ tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
+ }
+
+ return count;
+}
+
+static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
+ tpacpi_driver_wlsw_emulstate_show,
+ tpacpi_driver_wlsw_emulstate_store);
+
+/* bluetooth_emulstate ------------------------------------------------- */
+static ssize_t tpacpi_driver_bluetooth_emulstate_show(
+ struct device_driver *drv,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
+}
+
+static ssize_t tpacpi_driver_bluetooth_emulstate_store(
+ struct device_driver *drv,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ tpacpi_bluetooth_emulstate = !!t;
+
+ return count;
+}
+
+static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
+ tpacpi_driver_bluetooth_emulstate_show,
+ tpacpi_driver_bluetooth_emulstate_store);
+
+/* wwan_emulstate ------------------------------------------------- */
+static ssize_t tpacpi_driver_wwan_emulstate_show(
+ struct device_driver *drv,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
+}
+
+static ssize_t tpacpi_driver_wwan_emulstate_store(
+ struct device_driver *drv,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ tpacpi_wwan_emulstate = !!t;
+
+ return count;
+}
+
+static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
+ tpacpi_driver_wwan_emulstate_show,
+ tpacpi_driver_wwan_emulstate_store);
+
+/* uwb_emulstate ------------------------------------------------- */
+static ssize_t tpacpi_driver_uwb_emulstate_show(
+ struct device_driver *drv,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
+}
+
+static ssize_t tpacpi_driver_uwb_emulstate_store(
+ struct device_driver *drv,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ tpacpi_uwb_emulstate = !!t;
+
+ return count;
+}
+
+static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
+ tpacpi_driver_uwb_emulstate_show,
+ tpacpi_driver_uwb_emulstate_store);
+#endif
+
+/* --------------------------------------------------------------------- */
+
+static struct driver_attribute *tpacpi_driver_attributes[] = {
+ &driver_attr_debug_level, &driver_attr_version,
+ &driver_attr_interface_version,
+};
+
+static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
+{
+ int i, res;
+
+ i = 0;
+ res = 0;
+ while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
+ res = driver_create_file(drv, tpacpi_driver_attributes[i]);
+ i++;
+ }
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (!res && dbg_wlswemul)
+ res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
+ if (!res && dbg_bluetoothemul)
+ res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
+ if (!res && dbg_wwanemul)
+ res = driver_create_file(drv, &driver_attr_wwan_emulstate);
+ if (!res && dbg_uwbemul)
+ res = driver_create_file(drv, &driver_attr_uwb_emulstate);
+#endif
+
+ return res;
+}
+
+static void tpacpi_remove_driver_attributes(struct device_driver *drv)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
+ driver_remove_file(drv, tpacpi_driver_attributes[i]);
+
+#ifdef THINKPAD_ACPI_DEBUGFACILITIES
+ driver_remove_file(drv, &driver_attr_wlsw_emulstate);
+ driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
+ driver_remove_file(drv, &driver_attr_wwan_emulstate);
+ driver_remove_file(drv, &driver_attr_uwb_emulstate);
+#endif
+}
+
+/*************************************************************************
+ * Firmware Data
+ */
+
+/*
+ * Table of recommended minimum BIOS versions
+ *
+ * Reasons for listing:
+ * 1. Stable BIOS, listed because the unknown amount of
+ * bugs and bad ACPI behaviour on older versions
+ *
+ * 2. BIOS or EC fw with known bugs that trigger on Linux
+ *
+ * 3. BIOS with known reduced functionality in older versions
+ *
+ * We recommend the latest BIOS and EC version.
+ * We only support the latest BIOS and EC fw version as a rule.
+ *
+ * Sources: IBM ThinkPad Public Web Documents (update changelogs),
+ * Information from users in ThinkWiki
+ *
+ * WARNING: we use this table also to detect that the machine is
+ * a ThinkPad in some cases, so don't remove entries lightly.
+ */
+
+#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
+ { .vendor = (__v), \
+ .bios = TPID(__id1, __id2), \
+ .ec = TPACPI_MATCH_ANY, \
+ .quirks = TPACPI_MATCH_ANY << 16 \
+ | (__bv1) << 8 | (__bv2) }
+
+#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
+ __eid, __ev1, __ev2) \
+ { .vendor = (__v), \
+ .bios = TPID(__bid1, __bid2), \
+ .ec = __eid, \
+ .quirks = (__ev1) << 24 | (__ev2) << 16 \
+ | (__bv1) << 8 | (__bv2) }
+
+#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
+ TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
+
+/* Outdated IBM BIOSes often lack the EC id string */
+#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
+ TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
+ __bv1, __bv2, TPID(__id1, __id2), \
+ __ev1, __ev2), \
+ TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
+ __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
+ __ev1, __ev2)
+
+/* Outdated IBM BIOSes often lack the EC id string */
+#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
+ __eid1, __eid2, __ev1, __ev2) \
+ TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
+ __bv1, __bv2, TPID(__eid1, __eid2), \
+ __ev1, __ev2), \
+ TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
+ __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
+ __ev1, __ev2)
+
+#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
+ TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
+
+#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
+ TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
+ __bv1, __bv2, TPID(__id1, __id2), \
+ __ev1, __ev2)
+
+#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
+ __eid1, __eid2, __ev1, __ev2) \
+ TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
+ __bv1, __bv2, TPID(__eid1, __eid2), \
+ __ev1, __ev2)
+
+static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
+ /* Numeric models ------------------ */
+ /* FW MODEL BIOS VERS */
+ TPV_QI0('I', 'M', '6', '5'), /* 570 */
+ TPV_QI0('I', 'U', '2', '6'), /* 570E */
+ TPV_QI0('I', 'B', '5', '4'), /* 600 */
+ TPV_QI0('I', 'H', '4', '7'), /* 600E */
+ TPV_QI0('I', 'N', '3', '6'), /* 600E */
+ TPV_QI0('I', 'T', '5', '5'), /* 600X */
+ TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
+ TPV_QI0('I', 'I', '4', '2'), /* 770X */
+ TPV_QI0('I', 'O', '2', '3'), /* 770Z */
+
+ /* A-series ------------------------- */
+ /* FW MODEL BIOS VERS EC VERS */
+ TPV_QI0('I', 'W', '5', '9'), /* A20m */
+ TPV_QI0('I', 'V', '6', '9'), /* A20p */
+ TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
+ TPV_QI0('K', 'U', '3', '6'), /* A21e */
+ TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
+ TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
+ TPV_QI0('1', 'B', '1', '7'), /* A22e */
+ TPV_QI0('1', '3', '2', '0'), /* A22m */
+ TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
+ TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
+ TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
+
+ /* G-series ------------------------- */
+ /* FW MODEL BIOS VERS */
+ TPV_QI0('1', 'T', 'A', '6'), /* G40 */
+ TPV_QI0('1', 'X', '5', '7'), /* G41 */
+
+ /* R-series, T-series --------------- */
+ /* FW MODEL BIOS VERS EC VERS */
+ TPV_QI0('1', 'C', 'F', '0'), /* R30 */
+ TPV_QI0('1', 'F', 'F', '1'), /* R31 */
+ TPV_QI0('1', 'M', '9', '7'), /* R32 */
+ TPV_QI0('1', 'O', '6', '1'), /* R40 */
+ TPV_QI0('1', 'P', '6', '5'), /* R40 */
+ TPV_QI0('1', 'S', '7', '0'), /* R40e */
+ TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
+ T40/p, T41/p, T42/p (1) */
+ TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
+ TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
+ TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
+ TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
+
+ TPV_QI0('I', 'Y', '6', '1'), /* T20 */
+ TPV_QI0('K', 'Z', '3', '4'), /* T21 */
+ TPV_QI0('1', '6', '3', '2'), /* T22 */
+ TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
+ TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
+ TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
+
+ TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
+ TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
+ TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
+
+ /* BIOS FW BIOS VERS EC FW EC VERS */
+ TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
+ TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
+
+ /* X-series ------------------------- */
+ /* FW MODEL BIOS VERS EC VERS */
+ TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
+ TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
+ TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
+ TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
+ TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
+ TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
+ TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
+
+ TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
+ TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
+
+ /* (0) - older versions lack DMI EC fw string and functionality */
+ /* (1) - older versions known to lack functionality */
+};
+
+#undef TPV_QL1
+#undef TPV_QL0
+#undef TPV_QI2
+#undef TPV_QI1
+#undef TPV_QI0
+#undef TPV_Q_X
+#undef TPV_Q
+
+static void __init tpacpi_check_outdated_fw(void)
+{
+ unsigned long fwvers;
+ u16 ec_version, bios_version;
+
+ fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
+ ARRAY_SIZE(tpacpi_bios_version_qtable));
+
+ if (!fwvers)
+ return;
+
+ bios_version = fwvers & 0xffffU;
+ ec_version = (fwvers >> 16) & 0xffffU;
+
+ /* note that unknown versions are set to 0x0000 and we use that */
+ if ((bios_version > thinkpad_id.bios_release) ||
+ (ec_version > thinkpad_id.ec_release &&
+ ec_version != TPACPI_MATCH_ANY)) {
+ /*
+ * The changelogs would let us track down the exact
+ * reason, but it is just too much of a pain to track
+ * it. We only list BIOSes that are either really
+ * broken, or really stable to begin with, so it is
+ * best if the user upgrades the firmware anyway.
+ */
+ pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
+ pr_warn("WARNING: This firmware may be missing critical bug "
+ "fixes and/or important features\n");
+ }
+}
+
+static bool __init tpacpi_is_fw_known(void)
+{
+ return tpacpi_check_quirks(tpacpi_bios_version_qtable,
+ ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
+}
+
+/****************************************************************************
+ ****************************************************************************
+ *
+ * Subdrivers
+ *
+ ****************************************************************************
+ ****************************************************************************/
+
+/*************************************************************************
+ * thinkpad-acpi metadata subdriver
+ */
+
+static int thinkpad_acpi_driver_read(struct seq_file *m)
+{
+ seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
+ seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
+ return 0;
+}
+
+static struct ibm_struct thinkpad_acpi_driver_data = {
+ .name = "driver",
+ .read = thinkpad_acpi_driver_read,
+};
+
+/*************************************************************************
+ * Hotkey subdriver
+ */
+
+/*
+ * ThinkPad firmware event model
+ *
+ * The ThinkPad firmware has two main event interfaces: normal ACPI
+ * notifications (which follow the ACPI standard), and a private event
+ * interface.
+ *
+ * The private event interface also issues events for the hotkeys. As
+ * the driver gained features, the event handling code ended up being
+ * built around the hotkey subdriver. This will need to be refactored
+ * to a more formal event API eventually.
+ *
+ * Some "hotkeys" are actually supposed to be used as event reports,
+ * such as "brightness has changed", "volume has changed", depending on
+ * the ThinkPad model and how the firmware is operating.
+ *
+ * Unlike other classes, hotkey-class events have mask/unmask control on
+ * non-ancient firmware. However, how it behaves changes a lot with the
+ * firmware model and version.
+ */
+
+enum { /* hot key scan codes (derived from ACPI DSDT) */
+ TP_ACPI_HOTKEYSCAN_FNF1 = 0,
+ TP_ACPI_HOTKEYSCAN_FNF2,
+ TP_ACPI_HOTKEYSCAN_FNF3,
+ TP_ACPI_HOTKEYSCAN_FNF4,
+ TP_ACPI_HOTKEYSCAN_FNF5,
+ TP_ACPI_HOTKEYSCAN_FNF6,
+ TP_ACPI_HOTKEYSCAN_FNF7,
+ TP_ACPI_HOTKEYSCAN_FNF8,
+ TP_ACPI_HOTKEYSCAN_FNF9,
+ TP_ACPI_HOTKEYSCAN_FNF10,
+ TP_ACPI_HOTKEYSCAN_FNF11,
+ TP_ACPI_HOTKEYSCAN_FNF12,
+ TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
+ TP_ACPI_HOTKEYSCAN_FNINSERT,
+ TP_ACPI_HOTKEYSCAN_FNDELETE,
+ TP_ACPI_HOTKEYSCAN_FNHOME,
+ TP_ACPI_HOTKEYSCAN_FNEND,
+ TP_ACPI_HOTKEYSCAN_FNPAGEUP,
+ TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
+ TP_ACPI_HOTKEYSCAN_FNSPACE,
+ TP_ACPI_HOTKEYSCAN_VOLUMEUP,
+ TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
+ TP_ACPI_HOTKEYSCAN_MUTE,
+ TP_ACPI_HOTKEYSCAN_THINKPAD,
+ TP_ACPI_HOTKEYSCAN_UNK1,
+ TP_ACPI_HOTKEYSCAN_UNK2,
+ TP_ACPI_HOTKEYSCAN_UNK3,
+ TP_ACPI_HOTKEYSCAN_UNK4,
+ TP_ACPI_HOTKEYSCAN_UNK5,
+ TP_ACPI_HOTKEYSCAN_UNK6,
+ TP_ACPI_HOTKEYSCAN_UNK7,
+ TP_ACPI_HOTKEYSCAN_UNK8,
+
+ TP_ACPI_HOTKEYSCAN_MUTE2,
+ TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO,
+ TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL,
+ TP_ACPI_HOTKEYSCAN_CLOUD,
+ TP_ACPI_HOTKEYSCAN_UNK9,
+ TP_ACPI_HOTKEYSCAN_VOICE,
+ TP_ACPI_HOTKEYSCAN_UNK10,
+ TP_ACPI_HOTKEYSCAN_GESTURES,
+ TP_ACPI_HOTKEYSCAN_UNK11,
+ TP_ACPI_HOTKEYSCAN_UNK12,
+ TP_ACPI_HOTKEYSCAN_UNK13,
+ TP_ACPI_HOTKEYSCAN_CONFIG,
+ TP_ACPI_HOTKEYSCAN_NEW_TAB,
+ TP_ACPI_HOTKEYSCAN_RELOAD,
+ TP_ACPI_HOTKEYSCAN_BACK,
+ TP_ACPI_HOTKEYSCAN_MIC_DOWN,
+ TP_ACPI_HOTKEYSCAN_MIC_UP,
+ TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION,
+ TP_ACPI_HOTKEYSCAN_CAMERA_MODE,
+ TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY,
+
+ /* Hotkey keymap size */
+ TPACPI_HOTKEY_MAP_LEN
+};
+
+enum { /* Keys/events available through NVRAM polling */
+ TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
+ TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
+};
+
+enum { /* Positions of some of the keys in hotkey masks */
+ TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
+ TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
+ TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
+ TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
+ TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
+ TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
+ TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
+ TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
+ TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
+ TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
+ TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
+};
+
+enum { /* NVRAM to ACPI HKEY group map */
+ TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
+ TP_ACPI_HKEY_ZOOM_MASK |
+ TP_ACPI_HKEY_DISPSWTCH_MASK |
+ TP_ACPI_HKEY_HIBERNATE_MASK,
+ TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
+ TP_ACPI_HKEY_BRGHTDWN_MASK,
+ TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
+ TP_ACPI_HKEY_VOLDWN_MASK |
+ TP_ACPI_HKEY_MUTE_MASK,
+};
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+struct tp_nvram_state {
+ u16 thinkpad_toggle:1;
+ u16 zoom_toggle:1;
+ u16 display_toggle:1;
+ u16 thinklight_toggle:1;
+ u16 hibernate_toggle:1;
+ u16 displayexp_toggle:1;
+ u16 display_state:1;
+ u16 brightness_toggle:1;
+ u16 volume_toggle:1;
+ u16 mute:1;
+
+ u8 brightness_level;
+ u8 volume_level;
+};
+
+/* kthread for the hotkey poller */
+static struct task_struct *tpacpi_hotkey_task;
+
+/*
+ * Acquire mutex to write poller control variables as an
+ * atomic block.
+ *
+ * Increment hotkey_config_change when changing them if you
+ * want the kthread to forget old state.
+ *
+ * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
+ */
+static struct mutex hotkey_thread_data_mutex;
+static unsigned int hotkey_config_change;
+
+/*
+ * hotkey poller control variables
+ *
+ * Must be atomic or readers will also need to acquire mutex
+ *
+ * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
+ * should be used only when the changes need to be taken as
+ * a block, OR when one needs to force the kthread to forget
+ * old state.
+ */
+static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
+static unsigned int hotkey_poll_freq = 10; /* Hz */
+
+#define HOTKEY_CONFIG_CRITICAL_START \
+ do { \
+ mutex_lock(&hotkey_thread_data_mutex); \
+ hotkey_config_change++; \
+ } while (0);
+#define HOTKEY_CONFIG_CRITICAL_END \
+ mutex_unlock(&hotkey_thread_data_mutex);
+
+#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+#define hotkey_source_mask 0U
+#define HOTKEY_CONFIG_CRITICAL_START
+#define HOTKEY_CONFIG_CRITICAL_END
+
+#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+static struct mutex hotkey_mutex;
+
+static enum { /* Reasons for waking up */
+ TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
+ TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
+ TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
+} hotkey_wakeup_reason;
+
+static int hotkey_autosleep_ack;
+
+static u32 hotkey_orig_mask; /* events the BIOS had enabled */
+static u32 hotkey_all_mask; /* all events supported in fw */
+static u32 hotkey_reserved_mask; /* events better left disabled */
+static u32 hotkey_driver_mask; /* events needed by the driver */
+static u32 hotkey_user_mask; /* events visible to userspace */
+static u32 hotkey_acpi_mask; /* events enabled in firmware */
+
+static u16 *hotkey_keycode_map;
+
+static struct attribute_set *hotkey_dev_attributes;
+
+static void tpacpi_driver_event(const unsigned int hkey_event);
+static void hotkey_driver_event(const unsigned int scancode);
+static void hotkey_poll_setup(const bool may_warn);
+
+/* HKEY.MHKG() return bits */
+#define TP_HOTKEY_TABLET_MASK (1 << 3)
+
+static int hotkey_get_wlsw(void)
+{
+ int status;
+
+ if (!tp_features.hotkey_wlsw)
+ return -ENODEV;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_wlswemul)
+ return (tpacpi_wlsw_emulstate) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+#endif
+
+ if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
+ return -EIO;
+
+ return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+}
+
+static int hotkey_get_tablet_mode(int *status)
+{
+ int s;
+
+ if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
+ return -EIO;
+
+ *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
+ return 0;
+}
+
+/*
+ * Reads current event mask from firmware, and updates
+ * hotkey_acpi_mask accordingly. Also resets any bits
+ * from hotkey_user_mask that are unavailable to be
+ * delivered (shadow requirement of the userspace ABI).
+ *
+ * Call with hotkey_mutex held
+ */
+static int hotkey_mask_get(void)
+{
+ if (tp_features.hotkey_mask) {
+ u32 m = 0;
+
+ if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
+ return -EIO;
+
+ hotkey_acpi_mask = m;
+ } else {
+ /* no mask support doesn't mean no event support... */
+ hotkey_acpi_mask = hotkey_all_mask;
+ }
+
+ /* sync userspace-visible mask */
+ hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
+
+ return 0;
+}
+
+static void hotkey_mask_warn_incomplete_mask(void)
+{
+ /* log only what the user can fix... */
+ const u32 wantedmask = hotkey_driver_mask &
+ ~(hotkey_acpi_mask | hotkey_source_mask) &
+ (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
+
+ if (wantedmask)
+ pr_notice("required events 0x%08x not enabled!\n", wantedmask);
+}
+
+/*
+ * Set the firmware mask when supported
+ *
+ * Also calls hotkey_mask_get to update hotkey_acpi_mask.
+ *
+ * NOTE: does not set bits in hotkey_user_mask, but may reset them.
+ *
+ * Call with hotkey_mutex held
+ */
+static int hotkey_mask_set(u32 mask)
+{
+ int i;
+ int rc = 0;
+
+ const u32 fwmask = mask & ~hotkey_source_mask;
+
+ if (tp_features.hotkey_mask) {
+ for (i = 0; i < 32; i++) {
+ if (!acpi_evalf(hkey_handle,
+ NULL, "MHKM", "vdd", i + 1,
+ !!(mask & (1 << i)))) {
+ rc = -EIO;
+ break;
+ }
+ }
+ }
+
+ /*
+ * We *must* make an inconditional call to hotkey_mask_get to
+ * refresh hotkey_acpi_mask and update hotkey_user_mask
+ *
+ * Take the opportunity to also log when we cannot _enable_
+ * a given event.
+ */
+ if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
+ pr_notice("asked for hotkey mask 0x%08x, but "
+ "firmware forced it to 0x%08x\n",
+ fwmask, hotkey_acpi_mask);
+ }
+
+ if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
+ hotkey_mask_warn_incomplete_mask();
+
+ return rc;
+}
+
+/*
+ * Sets hotkey_user_mask and tries to set the firmware mask
+ *
+ * Call with hotkey_mutex held
+ */
+static int hotkey_user_mask_set(const u32 mask)
+{
+ int rc;
+
+ /* Give people a chance to notice they are doing something that
+ * is bound to go boom on their users sooner or later */
+ if (!tp_warned.hotkey_mask_ff &&
+ (mask == 0xffff || mask == 0xffffff ||
+ mask == 0xffffffff)) {
+ tp_warned.hotkey_mask_ff = 1;
+ pr_notice("setting the hotkey mask to 0x%08x is likely "
+ "not the best way to go about it\n", mask);
+ pr_notice("please consider using the driver defaults, "
+ "and refer to up-to-date thinkpad-acpi "
+ "documentation\n");
+ }
+
+ /* Try to enable what the user asked for, plus whatever we need.
+ * this syncs everything but won't enable bits in hotkey_user_mask */
+ rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
+
+ /* Enable the available bits in hotkey_user_mask */
+ hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
+
+ return rc;
+}
+
+/*
+ * Sets the driver hotkey mask.
+ *
+ * Can be called even if the hotkey subdriver is inactive
+ */
+static int tpacpi_hotkey_driver_mask_set(const u32 mask)
+{
+ int rc;
+
+ /* Do the right thing if hotkey_init has not been called yet */
+ if (!tp_features.hotkey) {
+ hotkey_driver_mask = mask;
+ return 0;
+ }
+
+ mutex_lock(&hotkey_mutex);
+
+ HOTKEY_CONFIG_CRITICAL_START
+ hotkey_driver_mask = mask;
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+ hotkey_source_mask |= (mask & ~hotkey_all_mask);
+#endif
+ HOTKEY_CONFIG_CRITICAL_END
+
+ rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
+ ~hotkey_source_mask);
+ hotkey_poll_setup(true);
+
+ mutex_unlock(&hotkey_mutex);
+
+ return rc;
+}
+
+static int hotkey_status_get(int *status)
+{
+ if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
+ return -EIO;
+
+ return 0;
+}
+
+static int hotkey_status_set(bool enable)
+{
+ if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
+ return -EIO;
+
+ return 0;
+}
+
+static void tpacpi_input_send_tabletsw(void)
+{
+ int state;
+
+ if (tp_features.hotkey_tablet &&
+ !hotkey_get_tablet_mode(&state)) {
+ mutex_lock(&tpacpi_inputdev_send_mutex);
+
+ input_report_switch(tpacpi_inputdev,
+ SW_TABLET_MODE, !!state);
+ input_sync(tpacpi_inputdev);
+
+ mutex_unlock(&tpacpi_inputdev_send_mutex);
+ }
+}
+
+/* Do NOT call without validating scancode first */
+static void tpacpi_input_send_key(const unsigned int scancode)
+{
+ const unsigned int keycode = hotkey_keycode_map[scancode];
+
+ if (keycode != KEY_RESERVED) {
+ mutex_lock(&tpacpi_inputdev_send_mutex);
+
+ input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
+ input_report_key(tpacpi_inputdev, keycode, 1);
+ input_sync(tpacpi_inputdev);
+
+ input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
+ input_report_key(tpacpi_inputdev, keycode, 0);
+ input_sync(tpacpi_inputdev);
+
+ mutex_unlock(&tpacpi_inputdev_send_mutex);
+ }
+}
+
+/* Do NOT call without validating scancode first */
+static void tpacpi_input_send_key_masked(const unsigned int scancode)
+{
+ hotkey_driver_event(scancode);
+ if (hotkey_user_mask & (1 << scancode))
+ tpacpi_input_send_key(scancode);
+}
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
+
+/* Do NOT call without validating scancode first */
+static void tpacpi_hotkey_send_key(unsigned int scancode)
+{
+ tpacpi_input_send_key_masked(scancode);
+}
+
+static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
+{
+ u8 d;
+
+ if (m & TP_NVRAM_HKEY_GROUP_HK2) {
+ d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
+ n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
+ n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
+ n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
+ n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
+ }
+ if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
+ d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
+ n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
+ }
+ if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
+ d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
+ n->displayexp_toggle =
+ !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
+ }
+ if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
+ d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
+ n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
+ >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
+ n->brightness_toggle =
+ !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
+ }
+ if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
+ d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
+ n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
+ >> TP_NVRAM_POS_LEVEL_VOLUME;
+ n->mute = !!(d & TP_NVRAM_MASK_MUTE);
+ n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
+ }
+}
+
+#define TPACPI_COMPARE_KEY(__scancode, __member) \
+do { \
+ if ((event_mask & (1 << __scancode)) && \
+ oldn->__member != newn->__member) \
+ tpacpi_hotkey_send_key(__scancode); \
+} while (0)
+
+#define TPACPI_MAY_SEND_KEY(__scancode) \
+do { \
+ if (event_mask & (1 << __scancode)) \
+ tpacpi_hotkey_send_key(__scancode); \
+} while (0)
+
+static void issue_volchange(const unsigned int oldvol,
+ const unsigned int newvol,
+ const u32 event_mask)
+{
+ unsigned int i = oldvol;
+
+ while (i > newvol) {
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
+ i--;
+ }
+ while (i < newvol) {
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
+ i++;
+ }
+}
+
+static void issue_brightnesschange(const unsigned int oldbrt,
+ const unsigned int newbrt,
+ const u32 event_mask)
+{
+ unsigned int i = oldbrt;
+
+ while (i > newbrt) {
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
+ i--;
+ }
+ while (i < newbrt) {
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
+ i++;
+ }
+}
+
+static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
+ struct tp_nvram_state *newn,
+ const u32 event_mask)
+{
+
+ TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
+ TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
+ TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
+ TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
+
+ TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
+
+ TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
+
+ /*
+ * Handle volume
+ *
+ * This code is supposed to duplicate the IBM firmware behaviour:
+ * - Pressing MUTE issues mute hotkey message, even when already mute
+ * - Pressing Volume up/down issues volume up/down hotkey messages,
+ * even when already at maximum or minimum volume
+ * - The act of unmuting issues volume up/down notification,
+ * depending which key was used to unmute
+ *
+ * We are constrained to what the NVRAM can tell us, which is not much
+ * and certainly not enough if more than one volume hotkey was pressed
+ * since the last poll cycle.
+ *
+ * Just to make our life interesting, some newer Lenovo ThinkPads have
+ * bugs in the BIOS and may fail to update volume_toggle properly.
+ */
+ if (newn->mute) {
+ /* muted */
+ if (!oldn->mute ||
+ oldn->volume_toggle != newn->volume_toggle ||
+ oldn->volume_level != newn->volume_level) {
+ /* recently muted, or repeated mute keypress, or
+ * multiple presses ending in mute */
+ issue_volchange(oldn->volume_level, newn->volume_level,
+ event_mask);
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
+ }
+ } else {
+ /* unmute */
+ if (oldn->mute) {
+ /* recently unmuted, issue 'unmute' keypress */
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
+ }
+ if (oldn->volume_level != newn->volume_level) {
+ issue_volchange(oldn->volume_level, newn->volume_level,
+ event_mask);
+ } else if (oldn->volume_toggle != newn->volume_toggle) {
+ /* repeated vol up/down keypress at end of scale ? */
+ if (newn->volume_level == 0)
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
+ else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
+ }
+ }
+
+ /* handle brightness */
+ if (oldn->brightness_level != newn->brightness_level) {
+ issue_brightnesschange(oldn->brightness_level,
+ newn->brightness_level, event_mask);
+ } else if (oldn->brightness_toggle != newn->brightness_toggle) {
+ /* repeated key presses that didn't change state */
+ if (newn->brightness_level == 0)
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
+ else if (newn->brightness_level >= bright_maxlvl
+ && !tp_features.bright_unkfw)
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
+ }
+
+#undef TPACPI_COMPARE_KEY
+#undef TPACPI_MAY_SEND_KEY
+}
+
+/*
+ * Polling driver
+ *
+ * We track all events in hotkey_source_mask all the time, since
+ * most of them are edge-based. We only issue those requested by
+ * hotkey_user_mask or hotkey_driver_mask, though.
+ */
+static int hotkey_kthread(void *data)
+{
+ struct tp_nvram_state s[2];
+ u32 poll_mask, event_mask;
+ unsigned int si, so;
+ unsigned long t;
+ unsigned int change_detector;
+ unsigned int poll_freq;
+ bool was_frozen;
+
+ if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
+ goto exit;
+
+ set_freezable();
+
+ so = 0;
+ si = 1;
+ t = 0;
+
+ /* Initial state for compares */
+ mutex_lock(&hotkey_thread_data_mutex);
+ change_detector = hotkey_config_change;
+ poll_mask = hotkey_source_mask;
+ event_mask = hotkey_source_mask &
+ (hotkey_driver_mask | hotkey_user_mask);
+ poll_freq = hotkey_poll_freq;
+ mutex_unlock(&hotkey_thread_data_mutex);
+ hotkey_read_nvram(&s[so], poll_mask);
+
+ while (!kthread_should_stop()) {
+ if (t == 0) {
+ if (likely(poll_freq))
+ t = 1000/poll_freq;
+ else
+ t = 100; /* should never happen... */
+ }
+ t = msleep_interruptible(t);
+ if (unlikely(kthread_freezable_should_stop(&was_frozen)))
+ break;
+
+ if (t > 0 && !was_frozen)
+ continue;
+
+ mutex_lock(&hotkey_thread_data_mutex);
+ if (was_frozen || hotkey_config_change != change_detector) {
+ /* forget old state on thaw or config change */
+ si = so;
+ t = 0;
+ change_detector = hotkey_config_change;
+ }
+ poll_mask = hotkey_source_mask;
+ event_mask = hotkey_source_mask &
+ (hotkey_driver_mask | hotkey_user_mask);
+ poll_freq = hotkey_poll_freq;
+ mutex_unlock(&hotkey_thread_data_mutex);
+
+ if (likely(poll_mask)) {
+ hotkey_read_nvram(&s[si], poll_mask);
+ if (likely(si != so)) {
+ hotkey_compare_and_issue_event(&s[so], &s[si],
+ event_mask);
+ }
+ }
+
+ so = si;
+ si ^= 1;
+ }
+
+exit:
+ return 0;
+}
+
+/* call with hotkey_mutex held */
+static void hotkey_poll_stop_sync(void)
+{
+ if (tpacpi_hotkey_task) {
+ kthread_stop(tpacpi_hotkey_task);
+ tpacpi_hotkey_task = NULL;
+ }
+}
+
+/* call with hotkey_mutex held */
+static void hotkey_poll_setup(const bool may_warn)
+{
+ const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
+ const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
+
+ if (hotkey_poll_freq > 0 &&
+ (poll_driver_mask ||
+ (poll_user_mask && tpacpi_inputdev->users > 0))) {
+ if (!tpacpi_hotkey_task) {
+ tpacpi_hotkey_task = kthread_run(hotkey_kthread,
+ NULL, TPACPI_NVRAM_KTHREAD_NAME);
+ if (IS_ERR(tpacpi_hotkey_task)) {
+ tpacpi_hotkey_task = NULL;
+ pr_err("could not create kernel thread "
+ "for hotkey polling\n");
+ }
+ }
+ } else {
+ hotkey_poll_stop_sync();
+ if (may_warn && (poll_driver_mask || poll_user_mask) &&
+ hotkey_poll_freq == 0) {
+ pr_notice("hot keys 0x%08x and/or events 0x%08x "
+ "require polling, which is currently "
+ "disabled\n",
+ poll_user_mask, poll_driver_mask);
+ }
+ }
+}
+
+static void hotkey_poll_setup_safe(const bool may_warn)
+{
+ mutex_lock(&hotkey_mutex);
+ hotkey_poll_setup(may_warn);
+ mutex_unlock(&hotkey_mutex);
+}
+
+/* call with hotkey_mutex held */
+static void hotkey_poll_set_freq(unsigned int freq)
+{
+ if (!freq)
+ hotkey_poll_stop_sync();
+
+ hotkey_poll_freq = freq;
+}
+
+#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+static void hotkey_poll_setup(const bool __unused)
+{
+}
+
+static void hotkey_poll_setup_safe(const bool __unused)
+{
+}
+
+#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+static int hotkey_inputdev_open(struct input_dev *dev)
+{
+ switch (tpacpi_lifecycle) {
+ case TPACPI_LIFE_INIT:
+ case TPACPI_LIFE_RUNNING:
+ hotkey_poll_setup_safe(false);
+ return 0;
+ case TPACPI_LIFE_EXITING:
+ return -EBUSY;
+ }
+
+ /* Should only happen if tpacpi_lifecycle is corrupt */
+ BUG();
+ return -EBUSY;
+}
+
+static void hotkey_inputdev_close(struct input_dev *dev)
+{
+ /* disable hotkey polling when possible */
+ if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
+ !(hotkey_source_mask & hotkey_driver_mask))
+ hotkey_poll_setup_safe(false);
+}
+
+/* sysfs hotkey enable ------------------------------------------------- */
+static ssize_t hotkey_enable_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res, status;
+
+ printk_deprecated_attribute("hotkey_enable",
+ "Hotkey reporting is always enabled");
+
+ res = hotkey_status_get(&status);
+ if (res)
+ return res;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", status);
+}
+
+static ssize_t hotkey_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+
+ printk_deprecated_attribute("hotkey_enable",
+ "Hotkeys can be disabled through hotkey_mask");
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ if (t == 0)
+ return -EPERM;
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(hotkey_enable);
+
+/* sysfs hotkey mask --------------------------------------------------- */
+static ssize_t hotkey_mask_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
+}
+
+static ssize_t hotkey_mask_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+ int res;
+
+ if (parse_strtoul(buf, 0xffffffffUL, &t))
+ return -EINVAL;
+
+ if (mutex_lock_killable(&hotkey_mutex))
+ return -ERESTARTSYS;
+
+ res = hotkey_user_mask_set(t);
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+ hotkey_poll_setup(true);
+#endif
+
+ mutex_unlock(&hotkey_mutex);
+
+ tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
+
+ return (res) ? res : count;
+}
+
+static DEVICE_ATTR_RW(hotkey_mask);
+
+/* sysfs hotkey bios_enabled ------------------------------------------- */
+static ssize_t hotkey_bios_enabled_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "0\n");
+}
+
+static DEVICE_ATTR_RO(hotkey_bios_enabled);
+
+/* sysfs hotkey bios_mask ---------------------------------------------- */
+static ssize_t hotkey_bios_mask_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ printk_deprecated_attribute("hotkey_bios_mask",
+ "This attribute is useless.");
+ return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
+}
+
+static DEVICE_ATTR_RO(hotkey_bios_mask);
+
+/* sysfs hotkey all_mask ----------------------------------------------- */
+static ssize_t hotkey_all_mask_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "0x%08x\n",
+ hotkey_all_mask | hotkey_source_mask);
+}
+
+static DEVICE_ATTR_RO(hotkey_all_mask);
+
+/* sysfs hotkey recommended_mask --------------------------------------- */
+static ssize_t hotkey_recommended_mask_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "0x%08x\n",
+ (hotkey_all_mask | hotkey_source_mask)
+ & ~hotkey_reserved_mask);
+}
+
+static DEVICE_ATTR_RO(hotkey_recommended_mask);
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+
+/* sysfs hotkey hotkey_source_mask ------------------------------------- */
+static ssize_t hotkey_source_mask_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
+}
+
+static ssize_t hotkey_source_mask_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+ u32 r_ev;
+ int rc;
+
+ if (parse_strtoul(buf, 0xffffffffUL, &t) ||
+ ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
+ return -EINVAL;
+
+ if (mutex_lock_killable(&hotkey_mutex))
+ return -ERESTARTSYS;
+
+ HOTKEY_CONFIG_CRITICAL_START
+ hotkey_source_mask = t;
+ HOTKEY_CONFIG_CRITICAL_END
+
+ rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
+ ~hotkey_source_mask);
+ hotkey_poll_setup(true);
+
+ /* check if events needed by the driver got disabled */
+ r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
+ & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
+
+ mutex_unlock(&hotkey_mutex);
+
+ if (rc < 0)
+ pr_err("hotkey_source_mask: "
+ "failed to update the firmware event mask!\n");
+
+ if (r_ev)
+ pr_notice("hotkey_source_mask: "
+ "some important events were disabled: 0x%04x\n",
+ r_ev);
+
+ tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
+
+ return (rc < 0) ? rc : count;
+}
+
+static DEVICE_ATTR_RW(hotkey_source_mask);
+
+/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
+static ssize_t hotkey_poll_freq_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
+}
+
+static ssize_t hotkey_poll_freq_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 25, &t))
+ return -EINVAL;
+
+ if (mutex_lock_killable(&hotkey_mutex))
+ return -ERESTARTSYS;
+
+ hotkey_poll_set_freq(t);
+ hotkey_poll_setup(true);
+
+ mutex_unlock(&hotkey_mutex);
+
+ tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(hotkey_poll_freq);
+
+#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
+static ssize_t hotkey_radio_sw_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res;
+ res = hotkey_get_wlsw();
+ if (res < 0)
+ return res;
+
+ /* Opportunistic update */
+ tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
+}
+
+static DEVICE_ATTR_RO(hotkey_radio_sw);
+
+static void hotkey_radio_sw_notify_change(void)
+{
+ if (tp_features.hotkey_wlsw)
+ sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
+ "hotkey_radio_sw");
+}
+
+/* sysfs hotkey tablet mode (pollable) --------------------------------- */
+static ssize_t hotkey_tablet_mode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res, s;
+ res = hotkey_get_tablet_mode(&s);
+ if (res < 0)
+ return res;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
+}
+
+static DEVICE_ATTR_RO(hotkey_tablet_mode);
+
+static void hotkey_tablet_mode_notify_change(void)
+{
+ if (tp_features.hotkey_tablet)
+ sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
+ "hotkey_tablet_mode");
+}
+
+/* sysfs wakeup reason (pollable) -------------------------------------- */
+static ssize_t hotkey_wakeup_reason_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
+}
+
+static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
+
+static void hotkey_wakeup_reason_notify_change(void)
+{
+ sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
+ "wakeup_reason");
+}
+
+/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
+static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
+}
+
+static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO,
+ hotkey_wakeup_hotunplug_complete_show, NULL);
+
+static void hotkey_wakeup_hotunplug_complete_notify_change(void)
+{
+ sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
+ "wakeup_hotunplug_complete");
+}
+
+/* sysfs adaptive kbd mode --------------------------------------------- */
+
+static int adaptive_keyboard_get_mode(void);
+static int adaptive_keyboard_set_mode(int new_mode);
+
+enum ADAPTIVE_KEY_MODE {
+ HOME_MODE,
+ WEB_BROWSER_MODE,
+ WEB_CONFERENCE_MODE,
+ FUNCTION_MODE,
+ LAYFLAT_MODE
+};
+
+static ssize_t adaptive_kbd_mode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int current_mode;
+
+ current_mode = adaptive_keyboard_get_mode();
+ if (current_mode < 0)
+ return current_mode;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", current_mode);
+}
+
+static ssize_t adaptive_kbd_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+ int res;
+
+ if (parse_strtoul(buf, LAYFLAT_MODE, &t))
+ return -EINVAL;
+
+ res = adaptive_keyboard_set_mode(t);
+ return (res < 0) ? res : count;
+}
+
+static DEVICE_ATTR_RW(adaptive_kbd_mode);
+
+static struct attribute *adaptive_kbd_attributes[] = {
+ &dev_attr_adaptive_kbd_mode.attr,
+ NULL
+};
+
+static const struct attribute_group adaptive_kbd_attr_group = {
+ .attrs = adaptive_kbd_attributes,
+};
+
+/* --------------------------------------------------------------------- */
+
+static struct attribute *hotkey_attributes[] __initdata = {
+ &dev_attr_hotkey_enable.attr,
+ &dev_attr_hotkey_bios_enabled.attr,
+ &dev_attr_hotkey_bios_mask.attr,
+ &dev_attr_wakeup_reason.attr,
+ &dev_attr_wakeup_hotunplug_complete.attr,
+ &dev_attr_hotkey_mask.attr,
+ &dev_attr_hotkey_all_mask.attr,
+ &dev_attr_hotkey_recommended_mask.attr,
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+ &dev_attr_hotkey_source_mask.attr,
+ &dev_attr_hotkey_poll_freq.attr,
+#endif
+};
+
+/*
+ * Sync both the hw and sw blocking state of all switches
+ */
+static void tpacpi_send_radiosw_update(void)
+{
+ int wlsw;
+
+ /*
+ * We must sync all rfkill controllers *before* issuing any
+ * rfkill input events, or we will race the rfkill core input
+ * handler.
+ *
+ * tpacpi_inputdev_send_mutex works as a synchronization point
+ * for the above.
+ *
+ * We optimize to avoid numerous calls to hotkey_get_wlsw.
+ */
+
+ wlsw = hotkey_get_wlsw();
+
+ /* Sync hw blocking state first if it is hw-blocked */
+ if (wlsw == TPACPI_RFK_RADIO_OFF)
+ tpacpi_rfk_update_hwblock_state(true);
+
+ /* Sync sw blocking state */
+ tpacpi_rfk_update_swstate_all();
+
+ /* Sync hw blocking state last if it is hw-unblocked */
+ if (wlsw == TPACPI_RFK_RADIO_ON)
+ tpacpi_rfk_update_hwblock_state(false);
+
+ /* Issue rfkill input event for WLSW switch */
+ if (!(wlsw < 0)) {
+ mutex_lock(&tpacpi_inputdev_send_mutex);
+
+ input_report_switch(tpacpi_inputdev,
+ SW_RFKILL_ALL, (wlsw > 0));
+ input_sync(tpacpi_inputdev);
+
+ mutex_unlock(&tpacpi_inputdev_send_mutex);
+ }
+
+ /*
+ * this can be unconditional, as we will poll state again
+ * if userspace uses the notify to read data
+ */
+ hotkey_radio_sw_notify_change();
+}
+
+static void hotkey_exit(void)
+{
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+ mutex_lock(&hotkey_mutex);
+ hotkey_poll_stop_sync();
+ mutex_unlock(&hotkey_mutex);
+#endif
+
+ if (hotkey_dev_attributes)
+ delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
+
+ dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
+ "restoring original HKEY status and mask\n");
+ /* yes, there is a bitwise or below, we want the
+ * functions to be called even if one of them fail */
+ if (((tp_features.hotkey_mask &&
+ hotkey_mask_set(hotkey_orig_mask)) |
+ hotkey_status_set(false)) != 0)
+ pr_err("failed to restore hot key mask "
+ "to BIOS defaults\n");
+}
+
+static void __init hotkey_unmap(const unsigned int scancode)
+{
+ if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
+ clear_bit(hotkey_keycode_map[scancode],
+ tpacpi_inputdev->keybit);
+ hotkey_keycode_map[scancode] = KEY_RESERVED;
+ }
+}
+
+/*
+ * HKEY quirks:
+ * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
+ */
+
+#define TPACPI_HK_Q_INIMASK 0x0001
+
+static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
+ TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
+ TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
+ TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
+ TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
+ TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
+ TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
+ TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
+ TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
+ TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
+ TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
+ TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
+ TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
+ TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
+ TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
+ TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
+ TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
+ TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
+ TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
+ TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
+};
+
+typedef u16 tpacpi_keymap_entry_t;
+typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
+
+static int __init hotkey_init(struct ibm_init_struct *iibm)
+{
+ /* Requirements for changing the default keymaps:
+ *
+ * 1. Many of the keys are mapped to KEY_RESERVED for very
+ * good reasons. Do not change them unless you have deep
+ * knowledge on the IBM and Lenovo ThinkPad firmware for
+ * the various ThinkPad models. The driver behaves
+ * differently for KEY_RESERVED: such keys have their
+ * hot key mask *unset* in mask_recommended, and also
+ * in the initial hot key mask programmed into the
+ * firmware at driver load time, which means the firm-
+ * ware may react very differently if you change them to
+ * something else;
+ *
+ * 2. You must be subscribed to the linux-thinkpad and
+ * ibm-acpi-devel mailing lists, and you should read the
+ * list archives since 2007 if you want to change the
+ * keymaps. This requirement exists so that you will
+ * know the past history of problems with the thinkpad-
+ * acpi driver keymaps, and also that you will be
+ * listening to any bug reports;
+ *
+ * 3. Do not send thinkpad-acpi specific patches directly to
+ * for merging, *ever*. Send them to the linux-acpi
+ * mailinglist for comments. Merging is to be done only
+ * through acpi-test and the ACPI maintainer.
+ *
+ * If the above is too much to ask, don't change the keymap.
+ * Ask the thinkpad-acpi maintainer to do it, instead.
+ */
+
+ enum keymap_index {
+ TPACPI_KEYMAP_IBM_GENERIC = 0,
+ TPACPI_KEYMAP_LENOVO_GENERIC,
+ };
+
+ static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
+ /* Generic keymap for IBM ThinkPads */
+ [TPACPI_KEYMAP_IBM_GENERIC] = {
+ /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
+ KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
+ KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
+ KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
+
+ /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
+ KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
+ KEY_UNKNOWN, /* 0x0D: FN+INSERT */
+ KEY_UNKNOWN, /* 0x0E: FN+DELETE */
+
+ /* brightness: firmware always reacts to them */
+ KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
+ KEY_RESERVED, /* 0x10: FN+END (brightness down) */
+
+ /* Thinklight: firmware always react to it */
+ KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
+
+ KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
+ KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
+
+ /* Volume: firmware always react to it and reprograms
+ * the built-in *extra* mixer. Never map it to control
+ * another mixer by default. */
+ KEY_RESERVED, /* 0x14: VOLUME UP */
+ KEY_RESERVED, /* 0x15: VOLUME DOWN */
+ KEY_RESERVED, /* 0x16: MUTE */
+
+ KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
+
+ /* (assignments unknown, please report if found) */
+ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+
+ /* No assignments, only used for Adaptive keyboards. */
+ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+ },
+
+ /* Generic keymap for Lenovo ThinkPads */
+ [TPACPI_KEYMAP_LENOVO_GENERIC] = {
+ /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
+ KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
+ KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
+ KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
+
+ /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
+ KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
+ KEY_UNKNOWN, /* 0x0D: FN+INSERT */
+ KEY_UNKNOWN, /* 0x0E: FN+DELETE */
+
+ /* These should be enabled --only-- when ACPI video
+ * is disabled (i.e. in "vendor" mode), and are handled
+ * in a special way by the init code */
+ KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
+ KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
+
+ KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
+
+ KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
+ KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
+
+ /* Volume: z60/z61, T60 (BIOS version?): firmware always
+ * react to it and reprograms the built-in *extra* mixer.
+ * Never map it to control another mixer by default.
+ *
+ * T60?, T61, R60?, R61: firmware and EC tries to send
+ * these over the regular keyboard, so these are no-ops,
+ * but there are still weird bugs re. MUTE, so do not
+ * change unless you get test reports from all Lenovo
+ * models. May cause the BIOS to interfere with the
+ * HDA mixer.
+ */
+ KEY_RESERVED, /* 0x14: VOLUME UP */
+ KEY_RESERVED, /* 0x15: VOLUME DOWN */
+ KEY_RESERVED, /* 0x16: MUTE */
+
+ KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
+
+ /* (assignments unknown, please report if found) */
+ KEY_UNKNOWN, KEY_UNKNOWN,
+
+ /*
+ * The mic mute button only sends 0x1a. It does not
+ * automatically mute the mic or change the mute light.
+ */
+ KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */
+
+ /* (assignments unknown, please report if found) */
+ KEY_UNKNOWN,
+
+ /* Extra keys in use since the X240 / T440 / T540 */
+ KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE,
+
+ /*
+ * These are the adaptive keyboard keycodes for Carbon X1 2014.
+ * The first item in this list is the Mute button which is
+ * emitted with 0x103 through
+ * adaptive_keyboard_hotkey_notify_hotkey() when the sound
+ * symbol is held.
+ * We'll need to offset those by 0x20.
+ */
+ KEY_RESERVED, /* Mute held, 0x103 */
+ KEY_BRIGHTNESS_MIN, /* Backlight off */
+ KEY_RESERVED, /* Clipping tool */
+ KEY_RESERVED, /* Cloud */
+ KEY_RESERVED,
+ KEY_VOICECOMMAND, /* Voice */
+ KEY_RESERVED,
+ KEY_RESERVED, /* Gestures */
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_CONFIG, /* Settings */
+ KEY_RESERVED, /* New tab */
+ KEY_REFRESH, /* Reload */
+ KEY_BACK, /* Back */
+ KEY_RESERVED, /* Microphone down */
+ KEY_RESERVED, /* Microphone up */
+ KEY_RESERVED, /* Microphone cancellation */
+ KEY_RESERVED, /* Camera mode */
+ KEY_RESERVED, /* Rotate display, 0x116 */
+ },
+ };
+
+ static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
+ /* Generic maps (fallback) */
+ {
+ .vendor = PCI_VENDOR_ID_IBM,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
+ .quirks = TPACPI_KEYMAP_IBM_GENERIC,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_LENOVO,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
+ .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
+ },
+ };
+
+#define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
+#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
+
+ int res, i;
+ int status;
+ int hkeyv;
+ bool radiosw_state = false;
+ bool tabletsw_state = false;
+
+ unsigned long quirks;
+ unsigned long keymap_id;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "initializing hotkey subdriver\n");
+
+ BUG_ON(!tpacpi_inputdev);
+ BUG_ON(tpacpi_inputdev->open != NULL ||
+ tpacpi_inputdev->close != NULL);
+
+ TPACPI_ACPIHANDLE_INIT(hkey);
+ mutex_init(&hotkey_mutex);
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+ mutex_init(&hotkey_thread_data_mutex);
+#endif
+
+ /* hotkey not supported on 570 */
+ tp_features.hotkey = hkey_handle != NULL;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "hotkeys are %s\n",
+ str_supported(tp_features.hotkey));
+
+ if (!tp_features.hotkey)
+ return 1;
+
+ /*
+ * Check if we have an adaptive keyboard, like on the
+ * Lenovo Carbon X1 2014 (2nd Gen).
+ */
+ if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
+ if ((hkeyv >> 8) == 2) {
+ tp_features.has_adaptive_kbd = true;
+ res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
+ &adaptive_kbd_attr_group);
+ if (res)
+ goto err_exit;
+ }
+ }
+
+ quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
+ ARRAY_SIZE(tpacpi_hotkey_qtable));
+
+ tpacpi_disable_brightness_delay();
+
+ /* MUST have enough space for all attributes to be added to
+ * hotkey_dev_attributes */
+ hotkey_dev_attributes = create_attr_set(
+ ARRAY_SIZE(hotkey_attributes) + 2,
+ NULL);
+ if (!hotkey_dev_attributes)
+ return -ENOMEM;
+ res = add_many_to_attr_set(hotkey_dev_attributes,
+ hotkey_attributes,
+ ARRAY_SIZE(hotkey_attributes));
+ if (res)
+ goto err_exit;
+
+ /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
+ A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
+ for HKEY interface version 0x100 */
+ if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
+ if ((hkeyv >> 8) != 1) {
+ pr_err("unknown version of the HKEY interface: 0x%x\n",
+ hkeyv);
+ pr_err("please report this to %s\n", TPACPI_MAIL);
+ } else {
+ /*
+ * MHKV 0x100 in A31, R40, R40e,
+ * T4x, X31, and later
+ */
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "firmware HKEY interface version: 0x%x\n",
+ hkeyv);
+
+ /* Paranoia check AND init hotkey_all_mask */
+ if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
+ "MHKA", "qd")) {
+ pr_err("missing MHKA handler, "
+ "please report this to %s\n",
+ TPACPI_MAIL);
+ /* Fallback: pre-init for FN+F3,F4,F12 */
+ hotkey_all_mask = 0x080cU;
+ } else {
+ tp_features.hotkey_mask = 1;
+ }
+ }
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "hotkey masks are %s\n",
+ str_supported(tp_features.hotkey_mask));
+
+ /* Init hotkey_all_mask if not initialized yet */
+ if (!tp_features.hotkey_mask && !hotkey_all_mask &&
+ (quirks & TPACPI_HK_Q_INIMASK))
+ hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
+
+ /* Init hotkey_acpi_mask and hotkey_orig_mask */
+ if (tp_features.hotkey_mask) {
+ /* hotkey_source_mask *must* be zero for
+ * the first hotkey_mask_get to return hotkey_orig_mask */
+ res = hotkey_mask_get();
+ if (res)
+ goto err_exit;
+
+ hotkey_orig_mask = hotkey_acpi_mask;
+ } else {
+ hotkey_orig_mask = hotkey_all_mask;
+ hotkey_acpi_mask = hotkey_all_mask;
+ }
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_wlswemul) {
+ tp_features.hotkey_wlsw = 1;
+ radiosw_state = !!tpacpi_wlsw_emulstate;
+ pr_info("radio switch emulation enabled\n");
+ } else
+#endif
+ /* Not all thinkpads have a hardware radio switch */
+ if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
+ tp_features.hotkey_wlsw = 1;
+ radiosw_state = !!status;
+ pr_info("radio switch found; radios are %s\n",
+ enabled(status, 0));
+ }
+ if (tp_features.hotkey_wlsw)
+ res = add_to_attr_set(hotkey_dev_attributes,
+ &dev_attr_hotkey_radio_sw.attr);
+
+ /* For X41t, X60t, X61t Tablets... */
+ if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
+ tp_features.hotkey_tablet = 1;
+ tabletsw_state = !!(status & TP_HOTKEY_TABLET_MASK);
+ pr_info("possible tablet mode switch found; "
+ "ThinkPad in %s mode\n",
+ (tabletsw_state) ? "tablet" : "laptop");
+ res = add_to_attr_set(hotkey_dev_attributes,
+ &dev_attr_hotkey_tablet_mode.attr);
+ }
+
+ if (!res)
+ res = register_attr_set_with_sysfs(
+ hotkey_dev_attributes,
+ &tpacpi_pdev->dev.kobj);
+ if (res)
+ goto err_exit;
+
+ /* Set up key map */
+ hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
+ GFP_KERNEL);
+ if (!hotkey_keycode_map) {
+ pr_err("failed to allocate memory for key map\n");
+ res = -ENOMEM;
+ goto err_exit;
+ }
+
+ keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
+ ARRAY_SIZE(tpacpi_keymap_qtable));
+ BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "using keymap number %lu\n", keymap_id);
+
+ memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id],
+ TPACPI_HOTKEY_MAP_SIZE);
+
+ input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
+ tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
+ tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
+ tpacpi_inputdev->keycode = hotkey_keycode_map;
+ for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
+ if (hotkey_keycode_map[i] != KEY_RESERVED) {
+ input_set_capability(tpacpi_inputdev, EV_KEY,
+ hotkey_keycode_map[i]);
+ } else {
+ if (i < sizeof(hotkey_reserved_mask)*8)
+ hotkey_reserved_mask |= 1 << i;
+ }
+ }
+
+ if (tp_features.hotkey_wlsw) {
+ input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
+ input_report_switch(tpacpi_inputdev,
+ SW_RFKILL_ALL, radiosw_state);
+ }
+ if (tp_features.hotkey_tablet) {
+ input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
+ input_report_switch(tpacpi_inputdev,
+ SW_TABLET_MODE, tabletsw_state);
+ }
+
+ /* Do not issue duplicate brightness change events to
+ * userspace. tpacpi_detect_brightness_capabilities() must have
+ * been called before this point */
+ if (acpi_video_backlight_support()) {
+ pr_info("This ThinkPad has standard ACPI backlight "
+ "brightness control, supported by the ACPI "
+ "video driver\n");
+ pr_notice("Disabling thinkpad-acpi brightness events "
+ "by default...\n");
+
+ /* Disable brightness up/down on Lenovo thinkpads when
+ * ACPI is handling them, otherwise it is plain impossible
+ * for userspace to do something even remotely sane */
+ hotkey_reserved_mask |=
+ (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
+ | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
+ hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
+ hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
+ }
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+ hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
+ & ~hotkey_all_mask
+ & ~hotkey_reserved_mask;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "hotkey source mask 0x%08x, polling freq %u\n",
+ hotkey_source_mask, hotkey_poll_freq);
+#endif
+
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "enabling firmware HKEY event interface...\n");
+ res = hotkey_status_set(true);
+ if (res) {
+ hotkey_exit();
+ return res;
+ }
+ res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
+ | hotkey_driver_mask)
+ & ~hotkey_source_mask);
+ if (res < 0 && res != -ENXIO) {
+ hotkey_exit();
+ return res;
+ }
+ hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
+ & ~hotkey_reserved_mask;
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
+ hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
+
+ tpacpi_inputdev->open = &hotkey_inputdev_open;
+ tpacpi_inputdev->close = &hotkey_inputdev_close;
+
+ hotkey_poll_setup_safe(true);
+
+ return 0;
+
+err_exit:
+ delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
+ sysfs_remove_group(&tpacpi_pdev->dev.kobj,
+ &adaptive_kbd_attr_group);
+
+ hotkey_dev_attributes = NULL;
+
+ return (res < 0) ? res : 1;
+}
+
+/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser
+ * mode, Web conference mode, Function mode and Lay-flat mode.
+ * We support Home mode and Function mode currently.
+ *
+ * Will consider support rest of modes in future.
+ *
+ */
+static const int adaptive_keyboard_modes[] = {
+ HOME_MODE,
+/* WEB_BROWSER_MODE = 2,
+ WEB_CONFERENCE_MODE = 3, */
+ FUNCTION_MODE
+};
+
+#define DFR_CHANGE_ROW 0x101
+#define DFR_SHOW_QUICKVIEW_ROW 0x102
+#define FIRST_ADAPTIVE_KEY 0x103
+#define ADAPTIVE_KEY_OFFSET 0x020
+
+/* press Fn key a while second, it will switch to Function Mode. Then
+ * release Fn key, previous mode be restored.
+ */
+static bool adaptive_keyboard_mode_is_saved;
+static int adaptive_keyboard_prev_mode;
+
+static int adaptive_keyboard_get_mode(void)
+{
+ int mode = 0;
+
+ if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
+ pr_err("Cannot read adaptive keyboard mode\n");
+ return -EIO;
+ }
+
+ return mode;
+}
+
+static int adaptive_keyboard_set_mode(int new_mode)
+{
+ if (new_mode < 0 ||
+ new_mode > LAYFLAT_MODE)
+ return -EINVAL;
+
+ if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
+ pr_err("Cannot set adaptive keyboard mode\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int adaptive_keyboard_get_next_mode(int mode)
+{
+ size_t i;
+ size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1;
+
+ for (i = 0; i <= max_mode; i++) {
+ if (adaptive_keyboard_modes[i] == mode)
+ break;
+ }
+
+ if (i >= max_mode)
+ i = 0;
+ else
+ i++;
+
+ return adaptive_keyboard_modes[i];
+}
+
+static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
+{
+ int current_mode = 0;
+ int new_mode = 0;
+ int keycode;
+
+ switch (scancode) {
+ case DFR_CHANGE_ROW:
+ if (adaptive_keyboard_mode_is_saved) {
+ new_mode = adaptive_keyboard_prev_mode;
+ adaptive_keyboard_mode_is_saved = false;
+ } else {
+ current_mode = adaptive_keyboard_get_mode();
+ if (current_mode < 0)
+ return false;
+ new_mode = adaptive_keyboard_get_next_mode(
+ current_mode);
+ }
+
+ if (adaptive_keyboard_set_mode(new_mode) < 0)
+ return false;
+
+ return true;
+
+ case DFR_SHOW_QUICKVIEW_ROW:
+ current_mode = adaptive_keyboard_get_mode();
+ if (current_mode < 0)
+ return false;
+
+ adaptive_keyboard_prev_mode = current_mode;
+ adaptive_keyboard_mode_is_saved = true;
+
+ if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0)
+ return false;
+ return true;
+
+ default:
+ if (scancode < FIRST_ADAPTIVE_KEY ||
+ scancode >= FIRST_ADAPTIVE_KEY + TPACPI_HOTKEY_MAP_LEN -
+ ADAPTIVE_KEY_OFFSET) {
+ pr_info("Unhandled adaptive keyboard key: 0x%x\n",
+ scancode);
+ return false;
+ }
+ keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + ADAPTIVE_KEY_OFFSET];
+ if (keycode != KEY_RESERVED) {
+ mutex_lock(&tpacpi_inputdev_send_mutex);
+
+ input_report_key(tpacpi_inputdev, keycode, 1);
+ input_sync(tpacpi_inputdev);
+
+ input_report_key(tpacpi_inputdev, keycode, 0);
+ input_sync(tpacpi_inputdev);
+
+ mutex_unlock(&tpacpi_inputdev_send_mutex);
+ }
+ return true;
+ }
+}
+
+static bool hotkey_notify_hotkey(const u32 hkey,
+ bool *send_acpi_ev,
+ bool *ignore_acpi_ev)
+{
+ /* 0x1000-0x1FFF: key presses */
+ unsigned int scancode = hkey & 0xfff;
+ *send_acpi_ev = true;
+ *ignore_acpi_ev = false;
+
+ /* HKEY event 0x1001 is scancode 0x00 */
+ if (scancode > 0 && scancode <= TPACPI_HOTKEY_MAP_LEN) {
+ scancode--;
+ if (!(hotkey_source_mask & (1 << scancode))) {
+ tpacpi_input_send_key_masked(scancode);
+ *send_acpi_ev = false;
+ } else {
+ *ignore_acpi_ev = true;
+ }
+ return true;
+ } else {
+ return adaptive_keyboard_hotkey_notify_hotkey(scancode);
+ }
+ return false;
+}
+
+static bool hotkey_notify_wakeup(const u32 hkey,
+ bool *send_acpi_ev,
+ bool *ignore_acpi_ev)
+{
+ /* 0x2000-0x2FFF: Wakeup reason */
+ *send_acpi_ev = true;
+ *ignore_acpi_ev = false;
+
+ switch (hkey) {
+ case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
+ case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
+ hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
+ *ignore_acpi_ev = true;
+ break;
+
+ case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
+ case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
+ hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
+ *ignore_acpi_ev = true;
+ break;
+
+ case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
+ case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
+ pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
+ /* how to auto-heal: */
+ /* 2313: woke up from S3, go to S4/S5 */
+ /* 2413: woke up from S4, go to S5 */
+ break;
+
+ default:
+ return false;
+ }
+
+ if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
+ pr_info("woke up due to a hot-unplug request...\n");
+ hotkey_wakeup_reason_notify_change();
+ }
+ return true;
+}
+
+static bool hotkey_notify_dockevent(const u32 hkey,
+ bool *send_acpi_ev,
+ bool *ignore_acpi_ev)
+{
+ /* 0x4000-0x4FFF: dock-related events */
+ *send_acpi_ev = true;
+ *ignore_acpi_ev = false;
+
+ switch (hkey) {
+ case TP_HKEY_EV_UNDOCK_ACK:
+ /* ACPI undock operation completed after wakeup */
+ hotkey_autosleep_ack = 1;
+ pr_info("undocked\n");
+ hotkey_wakeup_hotunplug_complete_notify_change();
+ return true;
+
+ case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
+ pr_info("docked into hotplug port replicator\n");
+ return true;
+ case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
+ pr_info("undocked from hotplug port replicator\n");
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+static bool hotkey_notify_usrevent(const u32 hkey,
+ bool *send_acpi_ev,
+ bool *ignore_acpi_ev)
+{
+ /* 0x5000-0x5FFF: human interface helpers */
+ *send_acpi_ev = true;
+ *ignore_acpi_ev = false;
+
+ switch (hkey) {
+ case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
+ case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
+ return true;
+
+ case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
+ case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
+ tpacpi_input_send_tabletsw();
+ hotkey_tablet_mode_notify_change();
+ *send_acpi_ev = false;
+ return true;
+
+ case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
+ case TP_HKEY_EV_LID_OPEN: /* Lid opened */
+ case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
+ /* do not propagate these events */
+ *ignore_acpi_ev = true;
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+static void thermal_dump_all_sensors(void);
+
+static bool hotkey_notify_6xxx(const u32 hkey,
+ bool *send_acpi_ev,
+ bool *ignore_acpi_ev)
+{
+ bool known = true;
+
+ /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
+ *send_acpi_ev = true;
+ *ignore_acpi_ev = false;
+
+ switch (hkey) {
+ case TP_HKEY_EV_THM_TABLE_CHANGED:
+ pr_info("EC reports that Thermal Table has changed\n");
+ /* recommended action: do nothing, we don't have
+ * Lenovo ATM information */
+ return true;
+ case TP_HKEY_EV_ALARM_BAT_HOT:
+ pr_crit("THERMAL ALARM: battery is too hot!\n");
+ /* recommended action: warn user through gui */
+ break;
+ case TP_HKEY_EV_ALARM_BAT_XHOT:
+ pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
+ /* recommended action: immediate sleep/hibernate */
+ break;
+ case TP_HKEY_EV_ALARM_SENSOR_HOT:
+ pr_crit("THERMAL ALARM: "
+ "a sensor reports something is too hot!\n");
+ /* recommended action: warn user through gui, that */
+ /* some internal component is too hot */
+ break;
+ case TP_HKEY_EV_ALARM_SENSOR_XHOT:
+ pr_alert("THERMAL EMERGENCY: "
+ "a sensor reports something is extremely hot!\n");
+ /* recommended action: immediate sleep/hibernate */
+ break;
+ case TP_HKEY_EV_AC_CHANGED:
+ /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
+ * AC status changed; can be triggered by plugging or
+ * unplugging AC adapter, docking or undocking. */
+
+ /* fallthrough */
+
+ case TP_HKEY_EV_KEY_NUMLOCK:
+ case TP_HKEY_EV_KEY_FN:
+ case TP_HKEY_EV_KEY_FN_ESC:
+ /* key press events, we just ignore them as long as the EC
+ * is still reporting them in the normal keyboard stream */
+ *send_acpi_ev = false;
+ *ignore_acpi_ev = true;
+ return true;
+
+ default:
+ pr_warn("unknown possible thermal alarm or keyboard event received\n");
+ known = false;
+ }
+
+ thermal_dump_all_sensors();
+
+ return known;
+}
+
+static void hotkey_notify(struct ibm_struct *ibm, u32 event)
+{
+ u32 hkey;
+ bool send_acpi_ev;
+ bool ignore_acpi_ev;
+ bool known_ev;
+
+ if (event != 0x80) {
+ pr_err("unknown HKEY notification event %d\n", event);
+ /* forward it to userspace, maybe it knows how to handle it */
+ acpi_bus_generate_netlink_event(
+ ibm->acpi->device->pnp.device_class,
+ dev_name(&ibm->acpi->device->dev),
+ event, 0);
+ return;
+ }
+
+ while (1) {
+ if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
+ pr_err("failed to retrieve HKEY event\n");
+ return;
+ }
+
+ if (hkey == 0) {
+ /* queue empty */
+ return;
+ }
+
+ send_acpi_ev = true;
+ ignore_acpi_ev = false;
+
+ switch (hkey >> 12) {
+ case 1:
+ /* 0x1000-0x1FFF: key presses */
+ known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
+ &ignore_acpi_ev);
+ break;
+ case 2:
+ /* 0x2000-0x2FFF: Wakeup reason */
+ known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
+ &ignore_acpi_ev);
+ break;
+ case 3:
+ /* 0x3000-0x3FFF: bay-related wakeups */
+ switch (hkey) {
+ case TP_HKEY_EV_BAYEJ_ACK:
+ hotkey_autosleep_ack = 1;
+ pr_info("bay ejected\n");
+ hotkey_wakeup_hotunplug_complete_notify_change();
+ known_ev = true;
+ break;
+ case TP_HKEY_EV_OPTDRV_EJ:
+ /* FIXME: kick libata if SATA link offline */
+ known_ev = true;
+ break;
+ default:
+ known_ev = false;
+ }
+ break;
+ case 4:
+ /* 0x4000-0x4FFF: dock-related events */
+ known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev,
+ &ignore_acpi_ev);
+ break;
+ case 5:
+ /* 0x5000-0x5FFF: human interface helpers */
+ known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
+ &ignore_acpi_ev);
+ break;
+ case 6:
+ /* 0x6000-0x6FFF: thermal alarms/notices and
+ * keyboard events */
+ known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev,
+ &ignore_acpi_ev);
+ break;
+ case 7:
+ /* 0x7000-0x7FFF: misc */
+ if (tp_features.hotkey_wlsw &&
+ hkey == TP_HKEY_EV_RFKILL_CHANGED) {
+ tpacpi_send_radiosw_update();
+ send_acpi_ev = 0;
+ known_ev = true;
+ break;
+ }
+ /* fallthrough to default */
+ default:
+ known_ev = false;
+ }
+ if (!known_ev) {
+ pr_notice("unhandled HKEY event 0x%04x\n", hkey);
+ pr_notice("please report the conditions when this "
+ "event happened to %s\n", TPACPI_MAIL);
+ }
+
+ /* netlink events */
+ if (!ignore_acpi_ev && send_acpi_ev) {
+ acpi_bus_generate_netlink_event(
+ ibm->acpi->device->pnp.device_class,
+ dev_name(&ibm->acpi->device->dev),
+ event, hkey);
+ }
+ }
+}
+
+static void hotkey_suspend(void)
+{
+ /* Do these on suspend, we get the events on early resume! */
+ hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
+ hotkey_autosleep_ack = 0;
+
+ /* save previous mode of adaptive keyboard of X1 Carbon */
+ if (tp_features.has_adaptive_kbd) {
+ if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode,
+ "GTRW", "dd", 0)) {
+ pr_err("Cannot read adaptive keyboard mode.\n");
+ }
+ }
+}
+
+static void hotkey_resume(void)
+{
+ tpacpi_disable_brightness_delay();
+
+ if (hotkey_status_set(true) < 0 ||
+ hotkey_mask_set(hotkey_acpi_mask) < 0)
+ pr_err("error while attempting to reset the event "
+ "firmware interface\n");
+
+ tpacpi_send_radiosw_update();
+ hotkey_tablet_mode_notify_change();
+ hotkey_wakeup_reason_notify_change();
+ hotkey_wakeup_hotunplug_complete_notify_change();
+ hotkey_poll_setup_safe(false);
+
+ /* restore previous mode of adapive keyboard of X1 Carbon */
+ if (tp_features.has_adaptive_kbd) {
+ if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd",
+ adaptive_keyboard_prev_mode)) {
+ pr_err("Cannot set adaptive keyboard mode.\n");
+ }
+ }
+}
+
+/* procfs -------------------------------------------------------------- */
+static int hotkey_read(struct seq_file *m)
+{
+ int res, status;
+
+ if (!tp_features.hotkey) {
+ seq_printf(m, "status:\t\tnot supported\n");
+ return 0;
+ }
+
+ if (mutex_lock_killable(&hotkey_mutex))
+ return -ERESTARTSYS;
+ res = hotkey_status_get(&status);
+ if (!res)
+ res = hotkey_mask_get();
+ mutex_unlock(&hotkey_mutex);
+ if (res)
+ return res;
+
+ seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
+ if (hotkey_all_mask) {
+ seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
+ seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
+ } else {
+ seq_printf(m, "mask:\t\tnot supported\n");
+ seq_printf(m, "commands:\tenable, disable, reset\n");
+ }
+
+ return 0;
+}
+
+static void hotkey_enabledisable_warn(bool enable)
+{
+ tpacpi_log_usertask("procfs hotkey enable/disable");
+ if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
+ pr_fmt("hotkey enable/disable functionality has been "
+ "removed from the driver. "
+ "Hotkeys are always enabled.\n")))
+ pr_err("Please remove the hotkey=enable module "
+ "parameter, it is deprecated. "
+ "Hotkeys are always enabled.\n");
+}
+
+static int hotkey_write(char *buf)
+{
+ int res;
+ u32 mask;
+ char *cmd;
+
+ if (!tp_features.hotkey)
+ return -ENODEV;
+
+ if (mutex_lock_killable(&hotkey_mutex))
+ return -ERESTARTSYS;
+
+ mask = hotkey_user_mask;
+
+ res = 0;
+ while ((cmd = next_cmd(&buf))) {
+ if (strlencmp(cmd, "enable") == 0) {
+ hotkey_enabledisable_warn(1);
+ } else if (strlencmp(cmd, "disable") == 0) {
+ hotkey_enabledisable_warn(0);
+ res = -EPERM;
+ } else if (strlencmp(cmd, "reset") == 0) {
+ mask = (hotkey_all_mask | hotkey_source_mask)
+ & ~hotkey_reserved_mask;
+ } else if (sscanf(cmd, "0x%x", &mask) == 1) {
+ /* mask set */
+ } else if (sscanf(cmd, "%x", &mask) == 1) {
+ /* mask set */
+ } else {
+ res = -EINVAL;
+ goto errexit;
+ }
+ }
+
+ if (!res) {
+ tpacpi_disclose_usertask("procfs hotkey",
+ "set mask to 0x%08x\n", mask);
+ res = hotkey_user_mask_set(mask);
+ }
+
+errexit:
+ mutex_unlock(&hotkey_mutex);
+ return res;
+}
+
+static const struct acpi_device_id ibm_htk_device_ids[] = {
+ {TPACPI_ACPI_IBM_HKEY_HID, 0},
+ {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
+ {"", 0},
+};
+
+static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
+ .hid = ibm_htk_device_ids,
+ .notify = hotkey_notify,
+ .handle = &hkey_handle,
+ .type = ACPI_DEVICE_NOTIFY,
+};
+
+static struct ibm_struct hotkey_driver_data = {
+ .name = "hotkey",
+ .read = hotkey_read,
+ .write = hotkey_write,
+ .exit = hotkey_exit,
+ .resume = hotkey_resume,
+ .suspend = hotkey_suspend,
+ .acpi = &ibm_hotkey_acpidriver,
+};
+
+/*************************************************************************
+ * Bluetooth subdriver
+ */
+
+enum {
+ /* ACPI GBDC/SBDC bits */
+ TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
+ TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
+ TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
+ 0 = disable, 1 = enable */
+};
+
+enum {
+ /* ACPI \BLTH commands */
+ TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
+ TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
+ TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
+ TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
+ TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
+};
+
+#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
+
+static int bluetooth_get_status(void)
+{
+ int status;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_bluetoothemul)
+ return (tpacpi_bluetooth_emulstate) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+#endif
+
+ if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
+ return -EIO;
+
+ return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+}
+
+static int bluetooth_set_status(enum tpacpi_rfkill_state state)
+{
+ int status;
+
+ vdbg_printk(TPACPI_DBG_RFKILL,
+ "will attempt to %s bluetooth\n",
+ (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_bluetoothemul) {
+ tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
+ return 0;
+ }
+#endif
+
+ if (state == TPACPI_RFK_RADIO_ON)
+ status = TP_ACPI_BLUETOOTH_RADIOSSW
+ | TP_ACPI_BLUETOOTH_RESUMECTRL;
+ else
+ status = 0;
+
+ if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
+ return -EIO;
+
+ return 0;
+}
+
+/* sysfs bluetooth enable ---------------------------------------------- */
+static ssize_t bluetooth_enable_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
+ attr, buf);
+}
+
+static ssize_t bluetooth_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
+ attr, buf, count);
+}
+
+static DEVICE_ATTR_RW(bluetooth_enable);
+
+/* --------------------------------------------------------------------- */
+
+static struct attribute *bluetooth_attributes[] = {
+ &dev_attr_bluetooth_enable.attr,
+ NULL
+};
+
+static const struct attribute_group bluetooth_attr_group = {
+ .attrs = bluetooth_attributes,
+};
+
+static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
+ .get_status = bluetooth_get_status,
+ .set_status = bluetooth_set_status,
+};
+
+static void bluetooth_shutdown(void)
+{
+ /* Order firmware to save current state to NVRAM */
+ if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
+ TP_ACPI_BLTH_SAVE_STATE))
+ pr_notice("failed to save bluetooth state to NVRAM\n");
+ else
+ vdbg_printk(TPACPI_DBG_RFKILL,
+ "bluetooth state saved to NVRAM\n");
+}
+
+static void bluetooth_exit(void)
+{
+ sysfs_remove_group(&tpacpi_pdev->dev.kobj,
+ &bluetooth_attr_group);
+
+ tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
+
+ bluetooth_shutdown();
+}
+
+static int __init bluetooth_init(struct ibm_init_struct *iibm)
+{
+ int res;
+ int status = 0;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "initializing bluetooth subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(hkey);
+
+ /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
+ G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
+ tp_features.bluetooth = hkey_handle &&
+ acpi_evalf(hkey_handle, &status, "GBDC", "qd");
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "bluetooth is %s, status 0x%02x\n",
+ str_supported(tp_features.bluetooth),
+ status);
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_bluetoothemul) {
+ tp_features.bluetooth = 1;
+ pr_info("bluetooth switch emulation enabled\n");
+ } else
+#endif
+ if (tp_features.bluetooth &&
+ !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
+ /* no bluetooth hardware present in system */
+ tp_features.bluetooth = 0;
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "bluetooth hardware not installed\n");
+ }
+
+ if (!tp_features.bluetooth)
+ return 1;
+
+ res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
+ &bluetooth_tprfk_ops,
+ RFKILL_TYPE_BLUETOOTH,
+ TPACPI_RFK_BLUETOOTH_SW_NAME,
+ true);
+ if (res)
+ return res;
+
+ res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
+ &bluetooth_attr_group);
+ if (res) {
+ tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
+ return res;
+ }
+
+ return 0;
+}
+
+/* procfs -------------------------------------------------------------- */
+static int bluetooth_read(struct seq_file *m)
+{
+ return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
+}
+
+static int bluetooth_write(char *buf)
+{
+ return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
+}
+
+static struct ibm_struct bluetooth_driver_data = {
+ .name = "bluetooth",
+ .read = bluetooth_read,
+ .write = bluetooth_write,
+ .exit = bluetooth_exit,
+ .shutdown = bluetooth_shutdown,
+};
+
+/*************************************************************************
+ * Wan subdriver
+ */
+
+enum {
+ /* ACPI GWAN/SWAN bits */
+ TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
+ TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
+ TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
+ 0 = disable, 1 = enable */
+};
+
+#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
+
+static int wan_get_status(void)
+{
+ int status;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_wwanemul)
+ return (tpacpi_wwan_emulstate) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+#endif
+
+ if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
+ return -EIO;
+
+ return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+}
+
+static int wan_set_status(enum tpacpi_rfkill_state state)
+{
+ int status;
+
+ vdbg_printk(TPACPI_DBG_RFKILL,
+ "will attempt to %s wwan\n",
+ (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_wwanemul) {
+ tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
+ return 0;
+ }
+#endif
+
+ if (state == TPACPI_RFK_RADIO_ON)
+ status = TP_ACPI_WANCARD_RADIOSSW
+ | TP_ACPI_WANCARD_RESUMECTRL;
+ else
+ status = 0;
+
+ if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
+ return -EIO;
+
+ return 0;
+}
+
+/* sysfs wan enable ---------------------------------------------------- */
+static ssize_t wan_enable_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
+ attr, buf);
+}
+
+static ssize_t wan_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
+ attr, buf, count);
+}
+
+static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO,
+ wan_enable_show, wan_enable_store);
+
+/* --------------------------------------------------------------------- */
+
+static struct attribute *wan_attributes[] = {
+ &dev_attr_wwan_enable.attr,
+ NULL
+};
+
+static const struct attribute_group wan_attr_group = {
+ .attrs = wan_attributes,
+};
+
+static const struct tpacpi_rfk_ops wan_tprfk_ops = {
+ .get_status = wan_get_status,
+ .set_status = wan_set_status,
+};
+
+static void wan_shutdown(void)
+{
+ /* Order firmware to save current state to NVRAM */
+ if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
+ TP_ACPI_WGSV_SAVE_STATE))
+ pr_notice("failed to save WWAN state to NVRAM\n");
+ else
+ vdbg_printk(TPACPI_DBG_RFKILL,
+ "WWAN state saved to NVRAM\n");
+}
+
+static void wan_exit(void)
+{
+ sysfs_remove_group(&tpacpi_pdev->dev.kobj,
+ &wan_attr_group);
+
+ tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
+
+ wan_shutdown();
+}
+
+static int __init wan_init(struct ibm_init_struct *iibm)
+{
+ int res;
+ int status = 0;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "initializing wan subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(hkey);
+
+ tp_features.wan = hkey_handle &&
+ acpi_evalf(hkey_handle, &status, "GWAN", "qd");
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "wan is %s, status 0x%02x\n",
+ str_supported(tp_features.wan),
+ status);
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_wwanemul) {
+ tp_features.wan = 1;
+ pr_info("wwan switch emulation enabled\n");
+ } else
+#endif
+ if (tp_features.wan &&
+ !(status & TP_ACPI_WANCARD_HWPRESENT)) {
+ /* no wan hardware present in system */
+ tp_features.wan = 0;
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "wan hardware not installed\n");
+ }
+
+ if (!tp_features.wan)
+ return 1;
+
+ res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
+ &wan_tprfk_ops,
+ RFKILL_TYPE_WWAN,
+ TPACPI_RFK_WWAN_SW_NAME,
+ true);
+ if (res)
+ return res;
+
+ res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
+ &wan_attr_group);
+
+ if (res) {
+ tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
+ return res;
+ }
+
+ return 0;
+}
+
+/* procfs -------------------------------------------------------------- */
+static int wan_read(struct seq_file *m)
+{
+ return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
+}
+
+static int wan_write(char *buf)
+{
+ return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
+}
+
+static struct ibm_struct wan_driver_data = {
+ .name = "wan",
+ .read = wan_read,
+ .write = wan_write,
+ .exit = wan_exit,
+ .shutdown = wan_shutdown,
+};
+
+/*************************************************************************
+ * UWB subdriver
+ */
+
+enum {
+ /* ACPI GUWB/SUWB bits */
+ TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
+ TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
+};
+
+#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
+
+static int uwb_get_status(void)
+{
+ int status;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_uwbemul)
+ return (tpacpi_uwb_emulstate) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+#endif
+
+ if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
+ return -EIO;
+
+ return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+}
+
+static int uwb_set_status(enum tpacpi_rfkill_state state)
+{
+ int status;
+
+ vdbg_printk(TPACPI_DBG_RFKILL,
+ "will attempt to %s UWB\n",
+ (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_uwbemul) {
+ tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
+ return 0;
+ }
+#endif
+
+ if (state == TPACPI_RFK_RADIO_ON)
+ status = TP_ACPI_UWB_RADIOSSW;
+ else
+ status = 0;
+
+ if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
+ return -EIO;
+
+ return 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
+ .get_status = uwb_get_status,
+ .set_status = uwb_set_status,
+};
+
+static void uwb_exit(void)
+{
+ tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
+}
+
+static int __init uwb_init(struct ibm_init_struct *iibm)
+{
+ int res;
+ int status = 0;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "initializing uwb subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(hkey);
+
+ tp_features.uwb = hkey_handle &&
+ acpi_evalf(hkey_handle, &status, "GUWB", "qd");
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "uwb is %s, status 0x%02x\n",
+ str_supported(tp_features.uwb),
+ status);
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_uwbemul) {
+ tp_features.uwb = 1;
+ pr_info("uwb switch emulation enabled\n");
+ } else
+#endif
+ if (tp_features.uwb &&
+ !(status & TP_ACPI_UWB_HWPRESENT)) {
+ /* no uwb hardware present in system */
+ tp_features.uwb = 0;
+ dbg_printk(TPACPI_DBG_INIT,
+ "uwb hardware not installed\n");
+ }
+
+ if (!tp_features.uwb)
+ return 1;
+
+ res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
+ &uwb_tprfk_ops,
+ RFKILL_TYPE_UWB,
+ TPACPI_RFK_UWB_SW_NAME,
+ false);
+ return res;
+}
+
+static struct ibm_struct uwb_driver_data = {
+ .name = "uwb",
+ .exit = uwb_exit,
+ .flags.experimental = 1,
+};
+
+/*************************************************************************
+ * Video subdriver
+ */
+
+#ifdef CONFIG_THINKPAD_ACPI_VIDEO
+
+enum video_access_mode {
+ TPACPI_VIDEO_NONE = 0,
+ TPACPI_VIDEO_570, /* 570 */
+ TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
+ TPACPI_VIDEO_NEW, /* all others */
+};
+
+enum { /* video status flags, based on VIDEO_570 */
+ TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
+ TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
+ TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
+};
+
+enum { /* TPACPI_VIDEO_570 constants */
+ TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
+ TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
+ * video_status_flags */
+ TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
+ TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
+};
+
+static enum video_access_mode video_supported;
+static int video_orig_autosw;
+
+static int video_autosw_get(void);
+static int video_autosw_set(int enable);
+
+TPACPI_HANDLE(vid, root,
+ "\\_SB.PCI.AGP.VGA", /* 570 */
+ "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
+ "\\_SB.PCI0.VID0", /* 770e */
+ "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
+ "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
+ "\\_SB.PCI0.AGP.VID", /* all others */
+ ); /* R30, R31 */
+
+TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
+
+static int __init video_init(struct ibm_init_struct *iibm)
+{
+ int ivga;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(vid);
+ if (tpacpi_is_ibm())
+ TPACPI_ACPIHANDLE_INIT(vid2);
+
+ if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
+ /* G41, assume IVGA doesn't change */
+ vid_handle = vid2_handle;
+
+ if (!vid_handle)
+ /* video switching not supported on R30, R31 */
+ video_supported = TPACPI_VIDEO_NONE;
+ else if (tpacpi_is_ibm() &&
+ acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
+ /* 570 */
+ video_supported = TPACPI_VIDEO_570;
+ else if (tpacpi_is_ibm() &&
+ acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
+ /* 600e/x, 770e, 770x */
+ video_supported = TPACPI_VIDEO_770;
+ else
+ /* all others */
+ video_supported = TPACPI_VIDEO_NEW;
+
+ vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
+ str_supported(video_supported != TPACPI_VIDEO_NONE),
+ video_supported);
+
+ return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1;
+}
+
+static void video_exit(void)
+{
+ dbg_printk(TPACPI_DBG_EXIT,
+ "restoring original video autoswitch mode\n");
+ if (video_autosw_set(video_orig_autosw))
+ pr_err("error while trying to restore original "
+ "video autoswitch mode\n");
+}
+
+static int video_outputsw_get(void)
+{
+ int status = 0;
+ int i;
+
+ switch (video_supported) {
+ case TPACPI_VIDEO_570:
+ if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
+ TP_ACPI_VIDEO_570_PHSCMD))
+ return -EIO;
+ status = i & TP_ACPI_VIDEO_570_PHSMASK;
+ break;
+ case TPACPI_VIDEO_770:
+ if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
+ return -EIO;
+ if (i)
+ status |= TP_ACPI_VIDEO_S_LCD;
+ if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
+ return -EIO;
+ if (i)
+ status |= TP_ACPI_VIDEO_S_CRT;
+ break;
+ case TPACPI_VIDEO_NEW:
+ if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
+ !acpi_evalf(NULL, &i, "\\VCDC", "d"))
+ return -EIO;
+ if (i)
+ status |= TP_ACPI_VIDEO_S_CRT;
+
+ if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
+ !acpi_evalf(NULL, &i, "\\VCDL", "d"))
+ return -EIO;
+ if (i)
+ status |= TP_ACPI_VIDEO_S_LCD;
+ if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
+ return -EIO;
+ if (i)
+ status |= TP_ACPI_VIDEO_S_DVI;
+ break;
+ default:
+ return -ENOSYS;
+ }
+
+ return status;
+}
+
+static int video_outputsw_set(int status)
+{
+ int autosw;
+ int res = 0;
+
+ switch (video_supported) {
+ case TPACPI_VIDEO_570:
+ res = acpi_evalf(NULL, NULL,
+ "\\_SB.PHS2", "vdd",
+ TP_ACPI_VIDEO_570_PHS2CMD,
+ status | TP_ACPI_VIDEO_570_PHS2SET);
+ break;
+ case TPACPI_VIDEO_770:
+ autosw = video_autosw_get();
+ if (autosw < 0)
+ return autosw;
+
+ res = video_autosw_set(1);
+ if (res)
+ return res;
+ res = acpi_evalf(vid_handle, NULL,
+ "ASWT", "vdd", status * 0x100, 0);
+ if (!autosw && video_autosw_set(autosw)) {
+ pr_err("video auto-switch left enabled due to error\n");
+ return -EIO;
+ }
+ break;
+ case TPACPI_VIDEO_NEW:
+ res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
+ acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
+ break;
+ default:
+ return -ENOSYS;
+ }
+
+ return (res) ? 0 : -EIO;
+}
+
+static int video_autosw_get(void)
+{
+ int autosw = 0;
+
+ switch (video_supported) {
+ case TPACPI_VIDEO_570:
+ if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
+ return -EIO;
+ break;
+ case TPACPI_VIDEO_770:
+ case TPACPI_VIDEO_NEW:
+ if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
+ return -EIO;
+ break;
+ default:
+ return -ENOSYS;
+ }
+
+ return autosw & 1;
+}
+
+static int video_autosw_set(int enable)
+{
+ if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0))
+ return -EIO;
+ return 0;
+}
+
+static int video_outputsw_cycle(void)
+{
+ int autosw = video_autosw_get();
+ int res;
+
+ if (autosw < 0)
+ return autosw;
+
+ switch (video_supported) {
+ case TPACPI_VIDEO_570:
+ res = video_autosw_set(1);
+ if (res)
+ return res;
+ res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
+ break;
+ case TPACPI_VIDEO_770:
+ case TPACPI_VIDEO_NEW:
+ res = video_autosw_set(1);
+ if (res)
+ return res;
+ res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
+ break;
+ default:
+ return -ENOSYS;
+ }
+ if (!autosw && video_autosw_set(autosw)) {
+ pr_err("video auto-switch left enabled due to error\n");
+ return -EIO;
+ }
+
+ return (res) ? 0 : -EIO;
+}
+
+static int video_expand_toggle(void)
+{
+ switch (video_supported) {
+ case TPACPI_VIDEO_570:
+ return acpi_evalf(ec_handle, NULL, "_Q17", "v") ?
+ 0 : -EIO;
+ case TPACPI_VIDEO_770:
+ return acpi_evalf(vid_handle, NULL, "VEXP", "v") ?
+ 0 : -EIO;
+ case TPACPI_VIDEO_NEW:
+ return acpi_evalf(NULL, NULL, "\\VEXP", "v") ?
+ 0 : -EIO;
+ default:
+ return -ENOSYS;
+ }
+ /* not reached */
+}
+
+static int video_read(struct seq_file *m)
+{
+ int status, autosw;
+
+ if (video_supported == TPACPI_VIDEO_NONE) {
+ seq_printf(m, "status:\t\tnot supported\n");
+ return 0;
+ }
+
+ /* Even reads can crash X.org, so... */
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ status = video_outputsw_get();
+ if (status < 0)
+ return status;
+
+ autosw = video_autosw_get();
+ if (autosw < 0)
+ return autosw;
+
+ seq_printf(m, "status:\t\tsupported\n");
+ seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
+ seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
+ if (video_supported == TPACPI_VIDEO_NEW)
+ seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
+ seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
+ seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
+ seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
+ if (video_supported == TPACPI_VIDEO_NEW)
+ seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
+ seq_printf(m, "commands:\tauto_enable, auto_disable\n");
+ seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
+
+ return 0;
+}
+
+static int video_write(char *buf)
+{
+ char *cmd;
+ int enable, disable, status;
+ int res;
+
+ if (video_supported == TPACPI_VIDEO_NONE)
+ return -ENODEV;
+
+ /* Even reads can crash X.org, let alone writes... */
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ enable = 0;
+ disable = 0;
+
+ while ((cmd = next_cmd(&buf))) {
+ if (strlencmp(cmd, "lcd_enable") == 0) {
+ enable |= TP_ACPI_VIDEO_S_LCD;
+ } else if (strlencmp(cmd, "lcd_disable") == 0) {
+ disable |= TP_ACPI_VIDEO_S_LCD;
+ } else if (strlencmp(cmd, "crt_enable") == 0) {
+ enable |= TP_ACPI_VIDEO_S_CRT;
+ } else if (strlencmp(cmd, "crt_disable") == 0) {
+ disable |= TP_ACPI_VIDEO_S_CRT;
+ } else if (video_supported == TPACPI_VIDEO_NEW &&
+ strlencmp(cmd, "dvi_enable") == 0) {
+ enable |= TP_ACPI_VIDEO_S_DVI;
+ } else if (video_supported == TPACPI_VIDEO_NEW &&
+ strlencmp(cmd, "dvi_disable") == 0) {
+ disable |= TP_ACPI_VIDEO_S_DVI;
+ } else if (strlencmp(cmd, "auto_enable") == 0) {
+ res = video_autosw_set(1);
+ if (res)
+ return res;
+ } else if (strlencmp(cmd, "auto_disable") == 0) {
+ res = video_autosw_set(0);
+ if (res)
+ return res;
+ } else if (strlencmp(cmd, "video_switch") == 0) {
+ res = video_outputsw_cycle();
+ if (res)
+ return res;
+ } else if (strlencmp(cmd, "expand_toggle") == 0) {
+ res = video_expand_toggle();
+ if (res)
+ return res;
+ } else
+ return -EINVAL;
+ }
+
+ if (enable || disable) {
+ status = video_outputsw_get();
+ if (status < 0)
+ return status;
+ res = video_outputsw_set((status & ~disable) | enable);
+ if (res)
+ return res;
+ }
+
+ return 0;
+}
+
+static struct ibm_struct video_driver_data = {
+ .name = "video",
+ .read = video_read,
+ .write = video_write,
+ .exit = video_exit,
+};
+
+#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
+
+/*************************************************************************
+ * Light (thinklight) subdriver
+ */
+
+TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
+TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
+
+static int light_get_status(void)
+{
+ int status = 0;
+
+ if (tp_features.light_status) {
+ if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
+ return -EIO;
+ return (!!status);
+ }
+
+ return -ENXIO;
+}
+
+static int light_set_status(int status)
+{
+ int rc;
+
+ if (tp_features.light) {
+ if (cmos_handle) {
+ rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
+ (status) ?
+ TP_CMOS_THINKLIGHT_ON :
+ TP_CMOS_THINKLIGHT_OFF);
+ } else {
+ rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
+ (status) ? 1 : 0);
+ }
+ return (rc) ? 0 : -EIO;
+ }
+
+ return -ENXIO;
+}
+
+static void light_set_status_worker(struct work_struct *work)
+{
+ struct tpacpi_led_classdev *data =
+ container_of(work, struct tpacpi_led_classdev, work);
+
+ if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
+ light_set_status((data->new_state != TPACPI_LED_OFF));
+}
+
+static void light_sysfs_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct tpacpi_led_classdev *data =
+ container_of(led_cdev,
+ struct tpacpi_led_classdev,
+ led_classdev);
+ data->new_state = (brightness != LED_OFF) ?
+ TPACPI_LED_ON : TPACPI_LED_OFF;
+ queue_work(tpacpi_wq, &data->work);
+}
+
+static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
+{
+ return (light_get_status() == 1) ? LED_FULL : LED_OFF;
+}
+
+static struct tpacpi_led_classdev tpacpi_led_thinklight = {
+ .led_classdev = {
+ .name = "tpacpi::thinklight",
+ .brightness_set = &light_sysfs_set,
+ .brightness_get = &light_sysfs_get,
+ }
+};
+
+static int __init light_init(struct ibm_init_struct *iibm)
+{
+ int rc;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
+
+ if (tpacpi_is_ibm()) {
+ TPACPI_ACPIHANDLE_INIT(ledb);
+ TPACPI_ACPIHANDLE_INIT(lght);
+ }
+ TPACPI_ACPIHANDLE_INIT(cmos);
+ INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
+
+ /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
+ tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
+
+ if (tp_features.light)
+ /* light status not supported on
+ 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
+ tp_features.light_status =
+ acpi_evalf(ec_handle, NULL, "KBLT", "qv");
+
+ vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
+ str_supported(tp_features.light),
+ str_supported(tp_features.light_status));
+
+ if (!tp_features.light)
+ return 1;
+
+ rc = led_classdev_register(&tpacpi_pdev->dev,
+ &tpacpi_led_thinklight.led_classdev);
+
+ if (rc < 0) {
+ tp_features.light = 0;
+ tp_features.light_status = 0;
+ } else {
+ rc = 0;
+ }
+
+ return rc;
+}
+
+static void light_exit(void)
+{
+ led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
+ flush_workqueue(tpacpi_wq);
+}
+
+static int light_read(struct seq_file *m)
+{
+ int status;
+
+ if (!tp_features.light) {
+ seq_printf(m, "status:\t\tnot supported\n");
+ } else if (!tp_features.light_status) {
+ seq_printf(m, "status:\t\tunknown\n");
+ seq_printf(m, "commands:\ton, off\n");
+ } else {
+ status = light_get_status();
+ if (status < 0)
+ return status;
+ seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
+ seq_printf(m, "commands:\ton, off\n");
+ }
+
+ return 0;
+}
+
+static int light_write(char *buf)
+{
+ char *cmd;
+ int newstatus = 0;
+
+ if (!tp_features.light)
+ return -ENODEV;
+
+ while ((cmd = next_cmd(&buf))) {
+ if (strlencmp(cmd, "on") == 0) {
+ newstatus = 1;
+ } else if (strlencmp(cmd, "off") == 0) {
+ newstatus = 0;
+ } else
+ return -EINVAL;
+ }
+
+ return light_set_status(newstatus);
+}
+
+static struct ibm_struct light_driver_data = {
+ .name = "light",
+ .read = light_read,
+ .write = light_write,
+ .exit = light_exit,
+};
+
+/*************************************************************************
+ * CMOS subdriver
+ */
+
+/* sysfs cmos_command -------------------------------------------------- */
+static ssize_t cmos_command_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long cmos_cmd;
+ int res;
+
+ if (parse_strtoul(buf, 21, &cmos_cmd))
+ return -EINVAL;
+
+ res = issue_thinkpad_cmos_command(cmos_cmd);
+ return (res) ? res : count;
+}
+
+static DEVICE_ATTR_WO(cmos_command);
+
+/* --------------------------------------------------------------------- */
+
+static int __init cmos_init(struct ibm_init_struct *iibm)
+{
+ int res;
+
+ vdbg_printk(TPACPI_DBG_INIT,
+ "initializing cmos commands subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(cmos);
+
+ vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
+ str_supported(cmos_handle != NULL));
+
+ res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
+ if (res)
+ return res;
+
+ return (cmos_handle) ? 0 : 1;
+}
+
+static void cmos_exit(void)
+{
+ device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
+}
+
+static int cmos_read(struct seq_file *m)
+{
+ /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
+ R30, R31, T20-22, X20-21 */
+ if (!cmos_handle)
+ seq_printf(m, "status:\t\tnot supported\n");
+ else {
+ seq_printf(m, "status:\t\tsupported\n");
+ seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
+ }
+
+ return 0;
+}
+
+static int cmos_write(char *buf)
+{
+ char *cmd;
+ int cmos_cmd, res;
+
+ while ((cmd = next_cmd(&buf))) {
+ if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
+ cmos_cmd >= 0 && cmos_cmd <= 21) {
+ /* cmos_cmd set */
+ } else
+ return -EINVAL;
+
+ res = issue_thinkpad_cmos_command(cmos_cmd);
+ if (res)
+ return res;
+ }
+
+ return 0;
+}
+
+static struct ibm_struct cmos_driver_data = {
+ .name = "cmos",
+ .read = cmos_read,
+ .write = cmos_write,
+ .exit = cmos_exit,
+};
+
+/*************************************************************************
+ * LED subdriver
+ */
+
+enum led_access_mode {
+ TPACPI_LED_NONE = 0,
+ TPACPI_LED_570, /* 570 */
+ TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
+ TPACPI_LED_NEW, /* all others */
+};
+
+enum { /* For TPACPI_LED_OLD */
+ TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
+ TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
+ TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
+};
+
+static enum led_access_mode led_supported;
+
+static acpi_handle led_handle;
+
+#define TPACPI_LED_NUMLEDS 16
+static struct tpacpi_led_classdev *tpacpi_leds;
+static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
+static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
+ /* there's a limit of 19 chars + NULL before 2.6.26 */
+ "tpacpi::power",
+ "tpacpi:orange:batt",
+ "tpacpi:green:batt",
+ "tpacpi::dock_active",
+ "tpacpi::bay_active",
+ "tpacpi::dock_batt",
+ "tpacpi::unknown_led",
+ "tpacpi::standby",
+ "tpacpi::dock_status1",
+ "tpacpi::dock_status2",
+ "tpacpi::unknown_led2",
+ "tpacpi::unknown_led3",
+ "tpacpi::thinkvantage",
+};
+#define TPACPI_SAFE_LEDS 0x1081U
+
+static inline bool tpacpi_is_led_restricted(const unsigned int led)
+{
+#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
+ return false;
+#else
+ return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
+#endif
+}
+
+static int led_get_status(const unsigned int led)
+{
+ int status;
+ enum led_status_t led_s;
+
+ switch (led_supported) {
+ case TPACPI_LED_570:
+ if (!acpi_evalf(ec_handle,
+ &status, "GLED", "dd", 1 << led))
+ return -EIO;
+ led_s = (status == 0) ?
+ TPACPI_LED_OFF :
+ ((status == 1) ?
+ TPACPI_LED_ON :
+ TPACPI_LED_BLINK);
+ tpacpi_led_state_cache[led] = led_s;
+ return led_s;
+ default:
+ return -ENXIO;
+ }
+
+ /* not reached */
+}
+
+static int led_set_status(const unsigned int led,
+ const enum led_status_t ledstatus)
+{
+ /* off, on, blink. Index is led_status_t */
+ static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
+ static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
+
+ int rc = 0;
+
+ switch (led_supported) {
+ case TPACPI_LED_570:
+ /* 570 */
+ if (unlikely(led > 7))
+ return -EINVAL;
+ if (unlikely(tpacpi_is_led_restricted(led)))
+ return -EPERM;
+ if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
+ (1 << led), led_sled_arg1[ledstatus]))
+ rc = -EIO;
+ break;
+ case TPACPI_LED_OLD:
+ /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
+ if (unlikely(led > 7))
+ return -EINVAL;
+ if (unlikely(tpacpi_is_led_restricted(led)))
+ return -EPERM;
+ rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
+ if (rc >= 0)
+ rc = ec_write(TPACPI_LED_EC_HLBL,
+ (ledstatus == TPACPI_LED_BLINK) << led);
+ if (rc >= 0)
+ rc = ec_write(TPACPI_LED_EC_HLCL,
+ (ledstatus != TPACPI_LED_OFF) << led);
+ break;
+ case TPACPI_LED_NEW:
+ /* all others */
+ if (unlikely(led >= TPACPI_LED_NUMLEDS))
+ return -EINVAL;
+ if (unlikely(tpacpi_is_led_restricted(led)))
+ return -EPERM;
+ if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
+ led, led_led_arg1[ledstatus]))
+ rc = -EIO;
+ break;
+ default:
+ rc = -ENXIO;
+ }
+
+ if (!rc)
+ tpacpi_led_state_cache[led] = ledstatus;
+
+ return rc;
+}
+
+static void led_set_status_worker(struct work_struct *work)
+{
+ struct tpacpi_led_classdev *data =
+ container_of(work, struct tpacpi_led_classdev, work);
+
+ if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
+ led_set_status(data->led, data->new_state);
+}
+
+static void led_sysfs_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct tpacpi_led_classdev *data = container_of(led_cdev,
+ struct tpacpi_led_classdev, led_classdev);
+
+ if (brightness == LED_OFF)
+ data->new_state = TPACPI_LED_OFF;
+ else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
+ data->new_state = TPACPI_LED_ON;
+ else
+ data->new_state = TPACPI_LED_BLINK;
+
+ queue_work(tpacpi_wq, &data->work);
+}
+
+static int led_sysfs_blink_set(struct led_classdev *led_cdev,
+ unsigned long *delay_on, unsigned long *delay_off)
+{
+ struct tpacpi_led_classdev *data = container_of(led_cdev,
+ struct tpacpi_led_classdev, led_classdev);
+
+ /* Can we choose the flash rate? */
+ if (*delay_on == 0 && *delay_off == 0) {
+ /* yes. set them to the hardware blink rate (1 Hz) */
+ *delay_on = 500; /* ms */
+ *delay_off = 500; /* ms */
+ } else if ((*delay_on != 500) || (*delay_off != 500))
+ return -EINVAL;
+
+ data->new_state = TPACPI_LED_BLINK;
+ queue_work(tpacpi_wq, &data->work);
+
+ return 0;
+}
+
+static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
+{
+ int rc;
+
+ struct tpacpi_led_classdev *data = container_of(led_cdev,
+ struct tpacpi_led_classdev, led_classdev);
+
+ rc = led_get_status(data->led);
+
+ if (rc == TPACPI_LED_OFF || rc < 0)
+ rc = LED_OFF; /* no error handling in led class :( */
+ else
+ rc = LED_FULL;
+
+ return rc;
+}
+
+static void led_exit(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
+ if (tpacpi_leds[i].led_classdev.name)
+ led_classdev_unregister(&tpacpi_leds[i].led_classdev);
+ }
+
+ flush_workqueue(tpacpi_wq);
+ kfree(tpacpi_leds);
+}
+
+static int __init tpacpi_init_led(unsigned int led)
+{
+ int rc;
+
+ tpacpi_leds[led].led = led;
+
+ /* LEDs with no name don't get registered */
+ if (!tpacpi_led_names[led])
+ return 0;
+
+ tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
+ tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
+ if (led_supported == TPACPI_LED_570)
+ tpacpi_leds[led].led_classdev.brightness_get =
+ &led_sysfs_get;
+
+ tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
+
+ INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
+
+ rc = led_classdev_register(&tpacpi_pdev->dev,
+ &tpacpi_leds[led].led_classdev);
+ if (rc < 0)
+ tpacpi_leds[led].led_classdev.name = NULL;
+
+ return rc;
+}
+
+static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
+ TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
+ TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
+ TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
+
+ TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
+ TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
+ TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
+ TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
+ TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
+ TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
+ TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
+ TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
+
+ TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
+ TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
+ TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
+ TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
+ TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
+
+ TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
+ TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
+ TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
+ TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
+
+ /* (1) - may have excess leds enabled on MSB */
+
+ /* Defaults (order matters, keep last, don't reorder!) */
+ { /* Lenovo */
+ .vendor = PCI_VENDOR_ID_LENOVO,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
+ .quirks = 0x1fffU,
+ },
+ { /* IBM ThinkPads with no EC version string */
+ .vendor = PCI_VENDOR_ID_IBM,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
+ .quirks = 0x00ffU,
+ },
+ { /* IBM ThinkPads with EC version string */
+ .vendor = PCI_VENDOR_ID_IBM,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
+ .quirks = 0x00bfU,
+ },
+};
+
+#undef TPACPI_LEDQ_IBM
+#undef TPACPI_LEDQ_LNV
+
+static enum led_access_mode __init led_init_detect_mode(void)
+{
+ acpi_status status;
+
+ if (tpacpi_is_ibm()) {
+ /* 570 */
+ status = acpi_get_handle(ec_handle, "SLED", &led_handle);
+ if (ACPI_SUCCESS(status))
+ return TPACPI_LED_570;
+
+ /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
+ status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
+ if (ACPI_SUCCESS(status))
+ return TPACPI_LED_OLD;
+ }
+
+ /* most others */
+ status = acpi_get_handle(ec_handle, "LED", &led_handle);
+ if (ACPI_SUCCESS(status))
+ return TPACPI_LED_NEW;
+
+ /* R30, R31, and unknown firmwares */
+ led_handle = NULL;
+ return TPACPI_LED_NONE;
+}
+
+static int __init led_init(struct ibm_init_struct *iibm)
+{
+ unsigned int i;
+ int rc;
+ unsigned long useful_leds;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
+
+ led_supported = led_init_detect_mode();
+
+ if (led_supported != TPACPI_LED_NONE) {
+ useful_leds = tpacpi_check_quirks(led_useful_qtable,
+ ARRAY_SIZE(led_useful_qtable));
+
+ if (!useful_leds) {
+ led_handle = NULL;
+ led_supported = TPACPI_LED_NONE;
+ }
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
+ str_supported(led_supported), led_supported);
+
+ if (led_supported == TPACPI_LED_NONE)
+ return 1;
+
+ tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
+ GFP_KERNEL);
+ if (!tpacpi_leds) {
+ pr_err("Out of memory for LED data\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
+ tpacpi_leds[i].led = -1;
+
+ if (!tpacpi_is_led_restricted(i) &&
+ test_bit(i, &useful_leds)) {
+ rc = tpacpi_init_led(i);
+ if (rc < 0) {
+ led_exit();
+ return rc;
+ }
+ }
+ }
+
+#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
+ pr_notice("warning: userspace override of important "
+ "firmware LEDs is enabled\n");
+#endif
+ return 0;
+}
+
+#define str_led_status(s) \
+ ((s) == TPACPI_LED_OFF ? "off" : \
+ ((s) == TPACPI_LED_ON ? "on" : "blinking"))
+
+static int led_read(struct seq_file *m)
+{
+ if (!led_supported) {
+ seq_printf(m, "status:\t\tnot supported\n");
+ return 0;
+ }
+ seq_printf(m, "status:\t\tsupported\n");
+
+ if (led_supported == TPACPI_LED_570) {
+ /* 570 */
+ int i, status;
+ for (i = 0; i < 8; i++) {
+ status = led_get_status(i);
+ if (status < 0)
+ return -EIO;
+ seq_printf(m, "%d:\t\t%s\n",
+ i, str_led_status(status));
+ }
+ }
+
+ seq_printf(m, "commands:\t"
+ "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
+
+ return 0;
+}
+
+static int led_write(char *buf)
+{
+ char *cmd;
+ int led, rc;
+ enum led_status_t s;
+
+ if (!led_supported)
+ return -ENODEV;
+
+ while ((cmd = next_cmd(&buf))) {
+ if (sscanf(cmd, "%d", &led) != 1)
+ return -EINVAL;
+
+ if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) ||
+ tpacpi_leds[led].led < 0)
+ return -ENODEV;
+
+ if (strstr(cmd, "off")) {
+ s = TPACPI_LED_OFF;
+ } else if (strstr(cmd, "on")) {
+ s = TPACPI_LED_ON;
+ } else if (strstr(cmd, "blink")) {
+ s = TPACPI_LED_BLINK;
+ } else {
+ return -EINVAL;
+ }
+
+ rc = led_set_status(led, s);
+ if (rc < 0)
+ return rc;
+ }
+
+ return 0;
+}
+
+static struct ibm_struct led_driver_data = {
+ .name = "led",
+ .read = led_read,
+ .write = led_write,
+ .exit = led_exit,
+};
+
+/*************************************************************************
+ * Beep subdriver
+ */
+
+TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
+
+#define TPACPI_BEEP_Q1 0x0001
+
+static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
+ TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
+ TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
+};
+
+static int __init beep_init(struct ibm_init_struct *iibm)
+{
+ unsigned long quirks;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(beep);
+
+ vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
+ str_supported(beep_handle != NULL));
+
+ quirks = tpacpi_check_quirks(beep_quirk_table,
+ ARRAY_SIZE(beep_quirk_table));
+
+ tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
+
+ return (beep_handle) ? 0 : 1;
+}
+
+static int beep_read(struct seq_file *m)
+{
+ if (!beep_handle)
+ seq_printf(m, "status:\t\tnot supported\n");
+ else {
+ seq_printf(m, "status:\t\tsupported\n");
+ seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
+ }
+
+ return 0;
+}
+
+static int beep_write(char *buf)
+{
+ char *cmd;
+ int beep_cmd;
+
+ if (!beep_handle)
+ return -ENODEV;
+
+ while ((cmd = next_cmd(&buf))) {
+ if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
+ beep_cmd >= 0 && beep_cmd <= 17) {
+ /* beep_cmd set */
+ } else
+ return -EINVAL;
+ if (tp_features.beep_needs_two_args) {
+ if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
+ beep_cmd, 0))
+ return -EIO;
+ } else {
+ if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
+ beep_cmd))
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+static struct ibm_struct beep_driver_data = {
+ .name = "beep",
+ .read = beep_read,
+ .write = beep_write,
+};
+
+/*************************************************************************
+ * Thermal subdriver
+ */
+
+enum thermal_access_mode {
+ TPACPI_THERMAL_NONE = 0, /* No thermal support */
+ TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
+ TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
+ TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
+ TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
+};
+
+enum { /* TPACPI_THERMAL_TPEC_* */
+ TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
+ TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
+ TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
+
+ TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
+};
+
+
+#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
+struct ibm_thermal_sensors_struct {
+ s32 temp[TPACPI_MAX_THERMAL_SENSORS];
+};
+
+static enum thermal_access_mode thermal_read_mode;
+
+/* idx is zero-based */
+static int thermal_get_sensor(int idx, s32 *value)
+{
+ int t;
+ s8 tmp;
+ char tmpi[5];
+
+ t = TP_EC_THERMAL_TMP0;
+
+ switch (thermal_read_mode) {
+#if TPACPI_MAX_THERMAL_SENSORS >= 16
+ case TPACPI_THERMAL_TPEC_16:
+ if (idx >= 8 && idx <= 15) {
+ t = TP_EC_THERMAL_TMP8;
+ idx -= 8;
+ }
+ /* fallthrough */
+#endif
+ case TPACPI_THERMAL_TPEC_8:
+ if (idx <= 7) {
+ if (!acpi_ec_read(t + idx, &tmp))
+ return -EIO;
+ *value = tmp * 1000;
+ return 0;
+ }
+ break;
+
+ case TPACPI_THERMAL_ACPI_UPDT:
+ if (idx <= 7) {
+ snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
+ if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
+ return -EIO;
+ if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
+ return -EIO;
+ *value = (t - 2732) * 100;
+ return 0;
+ }
+ break;
+
+ case TPACPI_THERMAL_ACPI_TMP07:
+ if (idx <= 7) {
+ snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
+ if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
+ return -EIO;
+ if (t > 127 || t < -127)
+ t = TP_EC_THERMAL_TMP_NA;
+ *value = t * 1000;
+ return 0;
+ }
+ break;
+
+ case TPACPI_THERMAL_NONE:
+ default:
+ return -ENOSYS;
+ }
+
+ return -EINVAL;
+}
+
+static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
+{
+ int res, i;
+ int n;
+
+ n = 8;
+ i = 0;
+
+ if (!s)
+ return -EINVAL;
+
+ if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
+ n = 16;
+
+ for (i = 0 ; i < n; i++) {
+ res = thermal_get_sensor(i, &s->temp[i]);
+ if (res)
+ return res;
+ }
+
+ return n;
+}
+
+static void thermal_dump_all_sensors(void)
+{
+ int n, i;
+ struct ibm_thermal_sensors_struct t;
+
+ n = thermal_get_sensors(&t);
+ if (n <= 0)
+ return;
+
+ pr_notice("temperatures (Celsius):");
+
+ for (i = 0; i < n; i++) {
+ if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
+ pr_cont(" %d", (int)(t.temp[i] / 1000));
+ else
+ pr_cont(" N/A");
+ }
+
+ pr_cont("\n");
+}
+
+/* sysfs temp##_input -------------------------------------------------- */
+
+static ssize_t thermal_temp_input_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr =
+ to_sensor_dev_attr(attr);
+ int idx = sensor_attr->index;
+ s32 value;
+ int res;
+
+ res = thermal_get_sensor(idx, &value);
+ if (res)
+ return res;
+ if (value == TPACPI_THERMAL_SENSOR_NA)
+ return -ENXIO;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", value);
+}
+
+#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
+ SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
+ thermal_temp_input_show, NULL, _idxB)
+
+static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
+ THERMAL_SENSOR_ATTR_TEMP(1, 0),
+ THERMAL_SENSOR_ATTR_TEMP(2, 1),
+ THERMAL_SENSOR_ATTR_TEMP(3, 2),
+ THERMAL_SENSOR_ATTR_TEMP(4, 3),
+ THERMAL_SENSOR_ATTR_TEMP(5, 4),
+ THERMAL_SENSOR_ATTR_TEMP(6, 5),
+ THERMAL_SENSOR_ATTR_TEMP(7, 6),
+ THERMAL_SENSOR_ATTR_TEMP(8, 7),
+ THERMAL_SENSOR_ATTR_TEMP(9, 8),
+ THERMAL_SENSOR_ATTR_TEMP(10, 9),
+ THERMAL_SENSOR_ATTR_TEMP(11, 10),
+ THERMAL_SENSOR_ATTR_TEMP(12, 11),
+ THERMAL_SENSOR_ATTR_TEMP(13, 12),
+ THERMAL_SENSOR_ATTR_TEMP(14, 13),
+ THERMAL_SENSOR_ATTR_TEMP(15, 14),
+ THERMAL_SENSOR_ATTR_TEMP(16, 15),
+};
+
+#define THERMAL_ATTRS(X) \
+ &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
+
+static struct attribute *thermal_temp_input_attr[] = {
+ THERMAL_ATTRS(8),
+ THERMAL_ATTRS(9),
+ THERMAL_ATTRS(10),
+ THERMAL_ATTRS(11),
+ THERMAL_ATTRS(12),
+ THERMAL_ATTRS(13),
+ THERMAL_ATTRS(14),
+ THERMAL_ATTRS(15),
+ THERMAL_ATTRS(0),
+ THERMAL_ATTRS(1),
+ THERMAL_ATTRS(2),
+ THERMAL_ATTRS(3),
+ THERMAL_ATTRS(4),
+ THERMAL_ATTRS(5),
+ THERMAL_ATTRS(6),
+ THERMAL_ATTRS(7),
+ NULL
+};
+
+static const struct attribute_group thermal_temp_input16_group = {
+ .attrs = thermal_temp_input_attr
+};
+
+static const struct attribute_group thermal_temp_input8_group = {
+ .attrs = &thermal_temp_input_attr[8]
+};
+
+#undef THERMAL_SENSOR_ATTR_TEMP
+#undef THERMAL_ATTRS
+
+/* --------------------------------------------------------------------- */
+
+static int __init thermal_init(struct ibm_init_struct *iibm)
+{
+ u8 t, ta1, ta2;
+ int i;
+ int acpi_tmp7;
+ int res;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
+
+ acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
+
+ if (thinkpad_id.ec_model) {
+ /*
+ * Direct EC access mode: sensors at registers
+ * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
+ * non-implemented, thermal sensors return 0x80 when
+ * not available
+ */
+
+ ta1 = ta2 = 0;
+ for (i = 0; i < 8; i++) {
+ if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
+ ta1 |= t;
+ } else {
+ ta1 = 0;
+ break;
+ }
+ if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
+ ta2 |= t;
+ } else {
+ ta1 = 0;
+ break;
+ }
+ }
+ if (ta1 == 0) {
+ /* This is sheer paranoia, but we handle it anyway */
+ if (acpi_tmp7) {
+ pr_err("ThinkPad ACPI EC access misbehaving, "
+ "falling back to ACPI TMPx access "
+ "mode\n");
+ thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
+ } else {
+ pr_err("ThinkPad ACPI EC access misbehaving, "
+ "disabling thermal sensors access\n");
+ thermal_read_mode = TPACPI_THERMAL_NONE;
+ }
+ } else {
+ thermal_read_mode =
+ (ta2 != 0) ?
+ TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
+ }
+ } else if (acpi_tmp7) {
+ if (tpacpi_is_ibm() &&
+ acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
+ /* 600e/x, 770e, 770x */
+ thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
+ } else {
+ /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
+ thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
+ }
+ } else {
+ /* temperatures not supported on 570, G4x, R30, R31, R32 */
+ thermal_read_mode = TPACPI_THERMAL_NONE;
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
+ str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
+ thermal_read_mode);
+
+ switch (thermal_read_mode) {
+ case TPACPI_THERMAL_TPEC_16:
+ res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
+ &thermal_temp_input16_group);
+ if (res)
+ return res;
+ break;
+ case TPACPI_THERMAL_TPEC_8:
+ case TPACPI_THERMAL_ACPI_TMP07:
+ case TPACPI_THERMAL_ACPI_UPDT:
+ res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
+ &thermal_temp_input8_group);
+ if (res)
+ return res;
+ break;
+ case TPACPI_THERMAL_NONE:
+ default:
+ return 1;
+ }
+
+ return 0;
+}
+
+static void thermal_exit(void)
+{
+ switch (thermal_read_mode) {
+ case TPACPI_THERMAL_TPEC_16:
+ sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
+ &thermal_temp_input16_group);
+ break;
+ case TPACPI_THERMAL_TPEC_8:
+ case TPACPI_THERMAL_ACPI_TMP07:
+ case TPACPI_THERMAL_ACPI_UPDT:
+ sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
+ &thermal_temp_input8_group);
+ break;
+ case TPACPI_THERMAL_NONE:
+ default:
+ break;
+ }
+}
+
+static int thermal_read(struct seq_file *m)
+{
+ int n, i;
+ struct ibm_thermal_sensors_struct t;
+
+ n = thermal_get_sensors(&t);
+ if (unlikely(n < 0))
+ return n;
+
+ seq_printf(m, "temperatures:\t");
+
+ if (n > 0) {
+ for (i = 0; i < (n - 1); i++)
+ seq_printf(m, "%d ", t.temp[i] / 1000);
+ seq_printf(m, "%d\n", t.temp[i] / 1000);
+ } else
+ seq_printf(m, "not supported\n");
+
+ return 0;
+}
+
+static struct ibm_struct thermal_driver_data = {
+ .name = "thermal",
+ .read = thermal_read,
+ .exit = thermal_exit,
+};
+
+/*************************************************************************
+ * Backlight/brightness subdriver
+ */
+
+#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
+
+/*
+ * ThinkPads can read brightness from two places: EC HBRV (0x31), or
+ * CMOS NVRAM byte 0x5E, bits 0-3.
+ *
+ * EC HBRV (0x31) has the following layout
+ * Bit 7: unknown function
+ * Bit 6: unknown function
+ * Bit 5: Z: honour scale changes, NZ: ignore scale changes
+ * Bit 4: must be set to zero to avoid problems
+ * Bit 3-0: backlight brightness level
+ *
+ * brightness_get_raw returns status data in the HBRV layout
+ *
+ * WARNING: The X61 has been verified to use HBRV for something else, so
+ * this should be used _only_ on IBM ThinkPads, and maybe with some careful
+ * testing on the very early *60 Lenovo models...
+ */
+
+enum {
+ TP_EC_BACKLIGHT = 0x31,
+
+ /* TP_EC_BACKLIGHT bitmasks */
+ TP_EC_BACKLIGHT_LVLMSK = 0x1F,
+ TP_EC_BACKLIGHT_CMDMSK = 0xE0,
+ TP_EC_BACKLIGHT_MAPSW = 0x20,
+};
+
+enum tpacpi_brightness_access_mode {
+ TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
+ TPACPI_BRGHT_MODE_EC, /* EC control */
+ TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
+ TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
+ TPACPI_BRGHT_MODE_MAX
+};
+
+static struct backlight_device *ibm_backlight_device;
+
+static enum tpacpi_brightness_access_mode brightness_mode =
+ TPACPI_BRGHT_MODE_MAX;
+
+static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
+
+static struct mutex brightness_mutex;
+
+/* NVRAM brightness access,
+ * call with brightness_mutex held! */
+static unsigned int tpacpi_brightness_nvram_get(void)
+{
+ u8 lnvram;
+
+ lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
+ & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
+ >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
+ lnvram &= bright_maxlvl;
+
+ return lnvram;
+}
+
+static void tpacpi_brightness_checkpoint_nvram(void)
+{
+ u8 lec = 0;
+ u8 b_nvram;
+
+ if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
+ return;
+
+ vdbg_printk(TPACPI_DBG_BRGHT,
+ "trying to checkpoint backlight level to NVRAM...\n");
+
+ if (mutex_lock_killable(&brightness_mutex) < 0)
+ return;
+
+ if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
+ goto unlock;
+ lec &= TP_EC_BACKLIGHT_LVLMSK;
+ b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
+
+ if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
+ >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
+ /* NVRAM needs update */
+ b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
+ TP_NVRAM_POS_LEVEL_BRIGHTNESS);
+ b_nvram |= lec;
+ nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
+ dbg_printk(TPACPI_DBG_BRGHT,
+ "updated NVRAM backlight level to %u (0x%02x)\n",
+ (unsigned int) lec, (unsigned int) b_nvram);
+ } else
+ vdbg_printk(TPACPI_DBG_BRGHT,
+ "NVRAM backlight level already is %u (0x%02x)\n",
+ (unsigned int) lec, (unsigned int) b_nvram);
+
+unlock:
+ mutex_unlock(&brightness_mutex);
+}
+
+
+/* call with brightness_mutex held! */
+static int tpacpi_brightness_get_raw(int *status)
+{
+ u8 lec = 0;
+
+ switch (brightness_mode) {
+ case TPACPI_BRGHT_MODE_UCMS_STEP:
+ *status = tpacpi_brightness_nvram_get();
+ return 0;
+ case TPACPI_BRGHT_MODE_EC:
+ case TPACPI_BRGHT_MODE_ECNVRAM:
+ if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
+ return -EIO;
+ *status = lec;
+ return 0;
+ default:
+ return -ENXIO;
+ }
+}
+
+/* call with brightness_mutex held! */
+/* do NOT call with illegal backlight level value */
+static int tpacpi_brightness_set_ec(unsigned int value)
+{
+ u8 lec = 0;
+
+ if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
+ return -EIO;
+
+ if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
+ (lec & TP_EC_BACKLIGHT_CMDMSK) |
+ (value & TP_EC_BACKLIGHT_LVLMSK))))
+ return -EIO;
+
+ return 0;
+}
+
+/* call with brightness_mutex held! */
+static int tpacpi_brightness_set_ucmsstep(unsigned int value)
+{
+ int cmos_cmd, inc;
+ unsigned int current_value, i;
+
+ current_value = tpacpi_brightness_nvram_get();
+
+ if (value == current_value)
+ return 0;
+
+ cmos_cmd = (value > current_value) ?
+ TP_CMOS_BRIGHTNESS_UP :
+ TP_CMOS_BRIGHTNESS_DOWN;
+ inc = (value > current_value) ? 1 : -1;
+
+ for (i = current_value; i != value; i += inc)
+ if (issue_thinkpad_cmos_command(cmos_cmd))
+ return -EIO;
+
+ return 0;
+}
+
+/* May return EINTR which can always be mapped to ERESTARTSYS */
+static int brightness_set(unsigned int value)
+{
+ int res;
+
+ if (value > bright_maxlvl)
+ return -EINVAL;
+
+ vdbg_printk(TPACPI_DBG_BRGHT,
+ "set backlight level to %d\n", value);
+
+ res = mutex_lock_killable(&brightness_mutex);
+ if (res < 0)
+ return res;
+
+ switch (brightness_mode) {
+ case TPACPI_BRGHT_MODE_EC:
+ case TPACPI_BRGHT_MODE_ECNVRAM:
+ res = tpacpi_brightness_set_ec(value);
+ break;
+ case TPACPI_BRGHT_MODE_UCMS_STEP:
+ res = tpacpi_brightness_set_ucmsstep(value);
+ break;
+ default:
+ res = -ENXIO;
+ }
+
+ mutex_unlock(&brightness_mutex);
+ return res;
+}
+
+/* sysfs backlight class ----------------------------------------------- */
+
+static int brightness_update_status(struct backlight_device *bd)
+{
+ unsigned int level =
+ (bd->props.fb_blank == FB_BLANK_UNBLANK &&
+ bd->props.power == FB_BLANK_UNBLANK) ?
+ bd->props.brightness : 0;
+
+ dbg_printk(TPACPI_DBG_BRGHT,
+ "backlight: attempt to set level to %d\n",
+ level);
+
+ /* it is the backlight class's job (caller) to handle
+ * EINTR and other errors properly */
+ return brightness_set(level);
+}
+
+static int brightness_get(struct backlight_device *bd)
+{
+ int status, res;
+
+ res = mutex_lock_killable(&brightness_mutex);
+ if (res < 0)
+ return 0;
+
+ res = tpacpi_brightness_get_raw(&status);
+
+ mutex_unlock(&brightness_mutex);
+
+ if (res < 0)
+ return 0;
+
+ return status & TP_EC_BACKLIGHT_LVLMSK;
+}
+
+static void tpacpi_brightness_notify_change(void)
+{
+ backlight_force_update(ibm_backlight_device,
+ BACKLIGHT_UPDATE_HOTKEY);
+}
+
+static const struct backlight_ops ibm_backlight_data = {
+ .get_brightness = brightness_get,
+ .update_status = brightness_update_status,
+};
+
+/* --------------------------------------------------------------------- */
+
+/*
+ * Call _BCL method of video device. On some ThinkPads this will
+ * switch the firmware to the ACPI brightness control mode.
+ */
+
+static int __init tpacpi_query_bcl_levels(acpi_handle handle)
+{
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ struct acpi_device *device, *child;
+ int rc;
+
+ if (acpi_bus_get_device(handle, &device))
+ return 0;
+
+ rc = 0;
+ list_for_each_entry(child, &device->children, node) {
+ acpi_status status = acpi_evaluate_object(child->handle, "_BCL",
+ NULL, &buffer);
+ if (ACPI_FAILURE(status))
+ continue;
+
+ obj = (union acpi_object *)buffer.pointer;
+ if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
+ pr_err("Unknown _BCL data, please report this to %s\n",
+ TPACPI_MAIL);
+ rc = 0;
+ } else {
+ rc = obj->package.count;
+ }
+ break;
+ }
+
+ kfree(buffer.pointer);
+ return rc;
+}
+
+
+/*
+ * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
+ */
+static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
+{
+ acpi_handle video_device;
+ int bcl_levels = 0;
+
+ tpacpi_acpi_handle_locate("video", NULL, &video_device);
+ if (video_device)
+ bcl_levels = tpacpi_query_bcl_levels(video_device);
+
+ tp_features.bright_acpimode = (bcl_levels > 0);
+
+ return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
+}
+
+/*
+ * These are only useful for models that have only one possibility
+ * of GPU. If the BIOS model handles both ATI and Intel, don't use
+ * these quirks.
+ */
+#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
+#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
+#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
+
+static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
+ /* Models with ATI GPUs known to require ECNVRAM mode */
+ TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
+
+ /* Models with ATI GPUs that can use ECNVRAM */
+ TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
+ TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
+ TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
+ TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
+
+ /* Models with Intel Extreme Graphics 2 */
+ TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
+ TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
+ TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
+
+ /* Models with Intel GMA900 */
+ TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
+ TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
+ TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
+};
+
+/*
+ * Returns < 0 for error, otherwise sets tp_features.bright_*
+ * and bright_maxlvl.
+ */
+static void __init tpacpi_detect_brightness_capabilities(void)
+{
+ unsigned int b;
+
+ vdbg_printk(TPACPI_DBG_INIT,
+ "detecting firmware brightness interface capabilities\n");
+
+ /* we could run a quirks check here (same table used by
+ * brightness_init) if needed */
+
+ /*
+ * We always attempt to detect acpi support, so as to switch
+ * Lenovo Vista BIOS to ACPI brightness mode even if we are not
+ * going to publish a backlight interface
+ */
+ b = tpacpi_check_std_acpi_brightness_support();
+ switch (b) {
+ case 16:
+ bright_maxlvl = 15;
+ pr_info("detected a 16-level brightness capable ThinkPad\n");
+ break;
+ case 8:
+ case 0:
+ bright_maxlvl = 7;
+ pr_info("detected a 8-level brightness capable ThinkPad\n");
+ break;
+ default:
+ pr_err("Unsupported brightness interface, "
+ "please contact %s\n", TPACPI_MAIL);
+ tp_features.bright_unkfw = 1;
+ bright_maxlvl = b - 1;
+ }
+}
+
+static int __init brightness_init(struct ibm_init_struct *iibm)
+{
+ struct backlight_properties props;
+ int b;
+ unsigned long quirks;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
+
+ mutex_init(&brightness_mutex);
+
+ quirks = tpacpi_check_quirks(brightness_quirk_table,
+ ARRAY_SIZE(brightness_quirk_table));
+
+ /* tpacpi_detect_brightness_capabilities() must have run already */
+
+ /* if it is unknown, we don't handle it: it wouldn't be safe */
+ if (tp_features.bright_unkfw)
+ return 1;
+
+ if (!brightness_enable) {
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
+ "brightness support disabled by "
+ "module parameter\n");
+ return 1;
+ }
+
+ if (acpi_video_backlight_support()) {
+ if (brightness_enable > 1) {
+ pr_info("Standard ACPI backlight interface "
+ "available, not loading native one\n");
+ return 1;
+ } else if (brightness_enable == 1) {
+ pr_warn("Cannot enable backlight brightness support, "
+ "ACPI is already handling it. Refer to the "
+ "acpi_backlight kernel parameter.\n");
+ return 1;
+ }
+ } else if (tp_features.bright_acpimode && brightness_enable > 1) {
+ pr_notice("Standard ACPI backlight interface not "
+ "available, thinkpad_acpi native "
+ "brightness control enabled\n");
+ }
+
+ /*
+ * Check for module parameter bogosity, note that we
+ * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
+ * able to detect "unspecified"
+ */
+ if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
+ return -EINVAL;
+
+ /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
+ if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
+ brightness_mode == TPACPI_BRGHT_MODE_MAX) {
+ if (quirks & TPACPI_BRGHT_Q_EC)
+ brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
+ else
+ brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
+
+ dbg_printk(TPACPI_DBG_BRGHT,
+ "driver auto-selected brightness_mode=%d\n",
+ brightness_mode);
+ }
+
+ /* Safety */
+ if (!tpacpi_is_ibm() &&
+ (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
+ brightness_mode == TPACPI_BRGHT_MODE_EC))
+ return -EINVAL;
+
+ if (tpacpi_brightness_get_raw(&b) < 0)
+ return 1;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = bright_maxlvl;
+ props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
+ ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
+ NULL, NULL,
+ &ibm_backlight_data,
+ &props);
+ if (IS_ERR(ibm_backlight_device)) {
+ int rc = PTR_ERR(ibm_backlight_device);
+ ibm_backlight_device = NULL;
+ pr_err("Could not register backlight device\n");
+ return rc;
+ }
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
+ "brightness is supported\n");
+
+ if (quirks & TPACPI_BRGHT_Q_ASK) {
+ pr_notice("brightness: will use unverified default: "
+ "brightness_mode=%d\n", brightness_mode);
+ pr_notice("brightness: please report to %s whether it works well "
+ "or not on your ThinkPad\n", TPACPI_MAIL);
+ }
+
+ /* Added by mistake in early 2007. Probably useless, but it could
+ * be working around some unknown firmware problem where the value
+ * read at startup doesn't match the real hardware state... so leave
+ * it in place just in case */
+ backlight_update_status(ibm_backlight_device);
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
+ "brightness: registering brightness hotkeys "
+ "as change notification\n");
+ tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
+ | TP_ACPI_HKEY_BRGHTUP_MASK
+ | TP_ACPI_HKEY_BRGHTDWN_MASK);
+ return 0;
+}
+
+static void brightness_suspend(void)
+{
+ tpacpi_brightness_checkpoint_nvram();
+}
+
+static void brightness_shutdown(void)
+{
+ tpacpi_brightness_checkpoint_nvram();
+}
+
+static void brightness_exit(void)
+{
+ if (ibm_backlight_device) {
+ vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
+ "calling backlight_device_unregister()\n");
+ backlight_device_unregister(ibm_backlight_device);
+ }
+
+ tpacpi_brightness_checkpoint_nvram();
+}
+
+static int brightness_read(struct seq_file *m)
+{
+ int level;
+
+ level = brightness_get(NULL);
+ if (level < 0) {
+ seq_printf(m, "level:\t\tunreadable\n");
+ } else {
+ seq_printf(m, "level:\t\t%d\n", level);
+ seq_printf(m, "commands:\tup, down\n");
+ seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
+ bright_maxlvl);
+ }
+
+ return 0;
+}
+
+static int brightness_write(char *buf)
+{
+ int level;
+ int rc;
+ char *cmd;
+
+ level = brightness_get(NULL);
+ if (level < 0)
+ return level;
+
+ while ((cmd = next_cmd(&buf))) {
+ if (strlencmp(cmd, "up") == 0) {
+ if (level < bright_maxlvl)
+ level++;
+ } else if (strlencmp(cmd, "down") == 0) {
+ if (level > 0)
+ level--;
+ } else if (sscanf(cmd, "level %d", &level) == 1 &&
+ level >= 0 && level <= bright_maxlvl) {
+ /* new level set */
+ } else
+ return -EINVAL;
+ }
+
+ tpacpi_disclose_usertask("procfs brightness",
+ "set level to %d\n", level);
+
+ /*
+ * Now we know what the final level should be, so we try to set it.
+ * Doing it this way makes the syscall restartable in case of EINTR
+ */
+ rc = brightness_set(level);
+ if (!rc && ibm_backlight_device)
+ backlight_force_update(ibm_backlight_device,
+ BACKLIGHT_UPDATE_SYSFS);
+ return (rc == -EINTR) ? -ERESTARTSYS : rc;
+}
+
+static struct ibm_struct brightness_driver_data = {
+ .name = "brightness",
+ .read = brightness_read,
+ .write = brightness_write,
+ .exit = brightness_exit,
+ .suspend = brightness_suspend,
+ .shutdown = brightness_shutdown,
+};
+
+/*************************************************************************
+ * Volume subdriver
+ */
+
+/*
+ * IBM ThinkPads have a simple volume controller with MUTE gating.
+ * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
+ *
+ * Since the *61 series (and probably also the later *60 series), Lenovo
+ * ThinkPads only implement the MUTE gate.
+ *
+ * EC register 0x30
+ * Bit 6: MUTE (1 mutes sound)
+ * Bit 3-0: Volume
+ * Other bits should be zero as far as we know.
+ *
+ * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
+ * bits 3-0 (volume). Other bits in NVRAM may have other functions,
+ * such as bit 7 which is used to detect repeated presses of MUTE,
+ * and we leave them unchanged.
+ *
+ * On newer Lenovo ThinkPads, the EC can automatically change the volume
+ * in response to user input. Unfortunately, this rarely works well.
+ * The laptop changes the state of its internal MUTE gate and, on some
+ * models, sends KEY_MUTE, causing any user code that responds to the
+ * mute button to get confused. The hardware MUTE gate is also
+ * unnecessary, since user code can handle the mute button without
+ * kernel or EC help.
+ *
+ * To avoid confusing userspace, we simply disable all EC-based mute
+ * and volume controls when possible.
+ */
+
+#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
+
+#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
+#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
+#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
+
+#if SNDRV_CARDS <= 32
+#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
+#else
+#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
+#endif
+static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
+static char *alsa_id = "ThinkPadEC";
+static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
+
+struct tpacpi_alsa_data {
+ struct snd_card *card;
+ struct snd_ctl_elem_id *ctl_mute_id;
+ struct snd_ctl_elem_id *ctl_vol_id;
+};
+
+static struct snd_card *alsa_card;
+
+enum {
+ TP_EC_AUDIO = 0x30,
+
+ /* TP_EC_AUDIO bits */
+ TP_EC_AUDIO_MUTESW = 6,
+
+ /* TP_EC_AUDIO bitmasks */
+ TP_EC_AUDIO_LVL_MSK = 0x0F,
+ TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
+
+ /* Maximum volume */
+ TP_EC_VOLUME_MAX = 14,
+};
+
+enum tpacpi_volume_access_mode {
+ TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
+ TPACPI_VOL_MODE_EC, /* Pure EC control */
+ TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
+ TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
+ TPACPI_VOL_MODE_MAX
+};
+
+enum tpacpi_volume_capabilities {
+ TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
+ TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
+ TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
+ TPACPI_VOL_CAP_MAX
+};
+
+enum tpacpi_mute_btn_mode {
+ TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
+ /* We don't know what mode 1 is. */
+ TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
+ TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
+};
+
+static enum tpacpi_volume_access_mode volume_mode =
+ TPACPI_VOL_MODE_MAX;
+
+static enum tpacpi_volume_capabilities volume_capabilities;
+static bool volume_control_allowed;
+static bool software_mute_requested = true;
+static bool software_mute_active;
+static int software_mute_orig_mode;
+
+/*
+ * Used to syncronize writers to TP_EC_AUDIO and
+ * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
+ */
+static struct mutex volume_mutex;
+
+static void tpacpi_volume_checkpoint_nvram(void)
+{
+ u8 lec = 0;
+ u8 b_nvram;
+ u8 ec_mask;
+
+ if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
+ return;
+ if (!volume_control_allowed)
+ return;
+ if (software_mute_active)
+ return;
+
+ vdbg_printk(TPACPI_DBG_MIXER,
+ "trying to checkpoint mixer state to NVRAM...\n");
+
+ if (tp_features.mixer_no_level_control)
+ ec_mask = TP_EC_AUDIO_MUTESW_MSK;
+ else
+ ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
+
+ if (mutex_lock_killable(&volume_mutex) < 0)
+ return;
+
+ if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
+ goto unlock;
+ lec &= ec_mask;
+ b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
+
+ if (lec != (b_nvram & ec_mask)) {
+ /* NVRAM needs update */
+ b_nvram &= ~ec_mask;
+ b_nvram |= lec;
+ nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
+ dbg_printk(TPACPI_DBG_MIXER,
+ "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
+ (unsigned int) lec, (unsigned int) b_nvram);
+ } else {
+ vdbg_printk(TPACPI_DBG_MIXER,
+ "NVRAM mixer status already is 0x%02x (0x%02x)\n",
+ (unsigned int) lec, (unsigned int) b_nvram);
+ }
+
+unlock:
+ mutex_unlock(&volume_mutex);
+}
+
+static int volume_get_status_ec(u8 *status)
+{
+ u8 s;
+
+ if (!acpi_ec_read(TP_EC_AUDIO, &s))
+ return -EIO;
+
+ *status = s;
+
+ dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
+
+ return 0;
+}
+
+static int volume_get_status(u8 *status)
+{
+ return volume_get_status_ec(status);
+}
+
+static int volume_set_status_ec(const u8 status)
+{
+ if (!acpi_ec_write(TP_EC_AUDIO, status))
+ return -EIO;
+
+ dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
+
+ /*
+ * On X200s, and possibly on others, it can take a while for
+ * reads to become correct.
+ */
+ msleep(1);
+
+ return 0;
+}
+
+static int volume_set_status(const u8 status)
+{
+ return volume_set_status_ec(status);
+}
+
+/* returns < 0 on error, 0 on no change, 1 on change */
+static int __volume_set_mute_ec(const bool mute)
+{
+ int rc;
+ u8 s, n;
+
+ if (mutex_lock_killable(&volume_mutex) < 0)
+ return -EINTR;
+
+ rc = volume_get_status_ec(&s);
+ if (rc)
+ goto unlock;
+
+ n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
+ s & ~TP_EC_AUDIO_MUTESW_MSK;
+
+ if (n != s) {
+ rc = volume_set_status_ec(n);
+ if (!rc)
+ rc = 1;
+ }
+
+unlock:
+ mutex_unlock(&volume_mutex);
+ return rc;
+}
+
+static int volume_alsa_set_mute(const bool mute)
+{
+ dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
+ (mute) ? "" : "un");
+ return __volume_set_mute_ec(mute);
+}
+
+static int volume_set_mute(const bool mute)
+{
+ int rc;
+
+ dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
+ (mute) ? "" : "un");
+
+ rc = __volume_set_mute_ec(mute);
+ return (rc < 0) ? rc : 0;
+}
+
+/* returns < 0 on error, 0 on no change, 1 on change */
+static int __volume_set_volume_ec(const u8 vol)
+{
+ int rc;
+ u8 s, n;
+
+ if (vol > TP_EC_VOLUME_MAX)
+ return -EINVAL;
+
+ if (mutex_lock_killable(&volume_mutex) < 0)
+ return -EINTR;
+
+ rc = volume_get_status_ec(&s);
+ if (rc)
+ goto unlock;
+
+ n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
+
+ if (n != s) {
+ rc = volume_set_status_ec(n);
+ if (!rc)
+ rc = 1;
+ }
+
+unlock:
+ mutex_unlock(&volume_mutex);
+ return rc;
+}
+
+static int volume_set_software_mute(bool startup)
+{
+ int result;
+
+ if (!tpacpi_is_lenovo())
+ return -ENODEV;
+
+ if (startup) {
+ if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
+ "HAUM", "qd"))
+ return -EIO;
+
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "Initial HAUM setting was %d\n",
+ software_mute_orig_mode);
+ }
+
+ if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
+ (int)TP_EC_MUTE_BTN_NONE))
+ return -EIO;
+
+ if (result != TP_EC_MUTE_BTN_NONE)
+ pr_warn("Unexpected SAUM result %d\n",
+ result);
+
+ /*
+ * In software mute mode, the standard codec controls take
+ * precendence, so we unmute the ThinkPad HW switch at
+ * startup. Just on case there are SAUM-capable ThinkPads
+ * with level controls, set max HW volume as well.
+ */
+ if (tp_features.mixer_no_level_control)
+ result = volume_set_mute(false);
+ else
+ result = volume_set_status(TP_EC_VOLUME_MAX);
+
+ if (result != 0)
+ pr_warn("Failed to unmute the HW mute switch\n");
+
+ return 0;
+}
+
+static void volume_exit_software_mute(void)
+{
+ int r;
+
+ if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
+ || r != software_mute_orig_mode)
+ pr_warn("Failed to restore mute mode\n");
+}
+
+static int volume_alsa_set_volume(const u8 vol)
+{
+ dbg_printk(TPACPI_DBG_MIXER,
+ "ALSA: trying to set volume level to %hu\n", vol);
+ return __volume_set_volume_ec(vol);
+}
+
+static void volume_alsa_notify_change(void)
+{
+ struct tpacpi_alsa_data *d;
+
+ if (alsa_card && alsa_card->private_data) {
+ d = alsa_card->private_data;
+ if (d->ctl_mute_id)
+ snd_ctl_notify(alsa_card,
+ SNDRV_CTL_EVENT_MASK_VALUE,
+ d->ctl_mute_id);
+ if (d->ctl_vol_id)
+ snd_ctl_notify(alsa_card,
+ SNDRV_CTL_EVENT_MASK_VALUE,
+ d->ctl_vol_id);
+ }
+}
+
+static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = TP_EC_VOLUME_MAX;
+ return 0;
+}
+
+static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ u8 s;
+ int rc;
+
+ rc = volume_get_status(&s);
+ if (rc < 0)
+ return rc;
+
+ ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
+ return 0;
+}
+
+static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
+ ucontrol->value.integer.value[0]);
+ return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
+}
+
+#define volume_alsa_mute_info snd_ctl_boolean_mono_info
+
+static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ u8 s;
+ int rc;
+
+ rc = volume_get_status(&s);
+ if (rc < 0)
+ return rc;
+
+ ucontrol->value.integer.value[0] =
+ (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
+ return 0;
+}
+
+static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ tpacpi_disclose_usertask("ALSA", "%smute\n",
+ ucontrol->value.integer.value[0] ?
+ "un" : "");
+ return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
+}
+
+static struct snd_kcontrol_new volume_alsa_control_vol __initdata = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Console Playback Volume",
+ .index = 0,
+ .access = SNDRV_CTL_ELEM_ACCESS_READ,
+ .info = volume_alsa_vol_info,
+ .get = volume_alsa_vol_get,
+};
+
+static struct snd_kcontrol_new volume_alsa_control_mute __initdata = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Console Playback Switch",
+ .index = 0,
+ .access = SNDRV_CTL_ELEM_ACCESS_READ,
+ .info = volume_alsa_mute_info,
+ .get = volume_alsa_mute_get,
+};
+
+static void volume_suspend(void)
+{
+ tpacpi_volume_checkpoint_nvram();
+}
+
+static void volume_resume(void)
+{
+ if (software_mute_active) {
+ if (volume_set_software_mute(false) < 0)
+ pr_warn("Failed to restore software mute\n");
+ } else {
+ volume_alsa_notify_change();
+ }
+}
+
+static void volume_shutdown(void)
+{
+ tpacpi_volume_checkpoint_nvram();
+}
+
+static void volume_exit(void)
+{
+ if (alsa_card) {
+ snd_card_free(alsa_card);
+ alsa_card = NULL;
+ }
+
+ tpacpi_volume_checkpoint_nvram();
+
+ if (software_mute_active)
+ volume_exit_software_mute();
+}
+
+static int __init volume_create_alsa_mixer(void)
+{
+ struct snd_card *card;
+ struct tpacpi_alsa_data *data;
+ struct snd_kcontrol *ctl_vol;
+ struct snd_kcontrol *ctl_mute;
+ int rc;
+
+ rc = snd_card_new(&tpacpi_pdev->dev,
+ alsa_index, alsa_id, THIS_MODULE,
+ sizeof(struct tpacpi_alsa_data), &card);
+ if (rc < 0 || !card) {
+ pr_err("Failed to create ALSA card structures: %d\n", rc);
+ return 1;
+ }
+
+ BUG_ON(!card->private_data);
+ data = card->private_data;
+ data->card = card;
+
+ strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
+ sizeof(card->driver));
+ strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
+ sizeof(card->shortname));
+ snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
+ (thinkpad_id.ec_version_str) ?
+ thinkpad_id.ec_version_str : "(unknown)");
+ snprintf(card->longname, sizeof(card->longname),
+ "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
+ (thinkpad_id.ec_version_str) ?
+ thinkpad_id.ec_version_str : "unknown");
+
+ if (volume_control_allowed) {
+ volume_alsa_control_vol.put = volume_alsa_vol_put;
+ volume_alsa_control_vol.access =
+ SNDRV_CTL_ELEM_ACCESS_READWRITE;
+
+ volume_alsa_control_mute.put = volume_alsa_mute_put;
+ volume_alsa_control_mute.access =
+ SNDRV_CTL_ELEM_ACCESS_READWRITE;
+ }
+
+ if (!tp_features.mixer_no_level_control) {
+ ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
+ rc = snd_ctl_add(card, ctl_vol);
+ if (rc < 0) {
+ pr_err("Failed to create ALSA volume control: %d\n",
+ rc);
+ goto err_exit;
+ }
+ data->ctl_vol_id = &ctl_vol->id;
+ }
+
+ ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
+ rc = snd_ctl_add(card, ctl_mute);
+ if (rc < 0) {
+ pr_err("Failed to create ALSA mute control: %d\n", rc);
+ goto err_exit;
+ }
+ data->ctl_mute_id = &ctl_mute->id;
+
+ rc = snd_card_register(card);
+ if (rc < 0) {
+ pr_err("Failed to register ALSA card: %d\n", rc);
+ goto err_exit;
+ }
+
+ alsa_card = card;
+ return 0;
+
+err_exit:
+ snd_card_free(card);
+ return 1;
+}
+
+#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
+#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
+
+static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
+ /* Whitelist volume level on all IBM by default */
+ { .vendor = PCI_VENDOR_ID_IBM,
+ .bios = TPACPI_MATCH_ANY,
+ .ec = TPACPI_MATCH_ANY,
+ .quirks = TPACPI_VOL_Q_LEVEL },
+
+ /* Lenovo models with volume control (needs confirmation) */
+ TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
+ TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
+ TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
+ TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
+ TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
+ TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
+ TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
+
+ /* Whitelist mute-only on all Lenovo by default */
+ { .vendor = PCI_VENDOR_ID_LENOVO,
+ .bios = TPACPI_MATCH_ANY,
+ .ec = TPACPI_MATCH_ANY,
+ .quirks = TPACPI_VOL_Q_MUTEONLY }
+};
+
+static int __init volume_init(struct ibm_init_struct *iibm)
+{
+ unsigned long quirks;
+ int rc;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
+
+ mutex_init(&volume_mutex);
+
+ /*
+ * Check for module parameter bogosity, note that we
+ * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
+ * able to detect "unspecified"
+ */
+ if (volume_mode > TPACPI_VOL_MODE_MAX)
+ return -EINVAL;
+
+ if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
+ pr_err("UCMS step volume mode not implemented, "
+ "please contact %s\n", TPACPI_MAIL);
+ return 1;
+ }
+
+ if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
+ return -EINVAL;
+
+ /*
+ * The ALSA mixer is our primary interface.
+ * When disabled, don't install the subdriver at all
+ */
+ if (!alsa_enable) {
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "ALSA mixer disabled by parameter, "
+ "not loading volume subdriver...\n");
+ return 1;
+ }
+
+ quirks = tpacpi_check_quirks(volume_quirk_table,
+ ARRAY_SIZE(volume_quirk_table));
+
+ switch (volume_capabilities) {
+ case TPACPI_VOL_CAP_AUTO:
+ if (quirks & TPACPI_VOL_Q_MUTEONLY)
+ tp_features.mixer_no_level_control = 1;
+ else if (quirks & TPACPI_VOL_Q_LEVEL)
+ tp_features.mixer_no_level_control = 0;
+ else
+ return 1; /* no mixer */
+ break;
+ case TPACPI_VOL_CAP_VOLMUTE:
+ tp_features.mixer_no_level_control = 0;
+ break;
+ case TPACPI_VOL_CAP_MUTEONLY:
+ tp_features.mixer_no_level_control = 1;
+ break;
+ default:
+ return 1;
+ }
+
+ if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "using user-supplied volume_capabilities=%d\n",
+ volume_capabilities);
+
+ if (volume_mode == TPACPI_VOL_MODE_AUTO ||
+ volume_mode == TPACPI_VOL_MODE_MAX) {
+ volume_mode = TPACPI_VOL_MODE_ECNVRAM;
+
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "driver auto-selected volume_mode=%d\n",
+ volume_mode);
+ } else {
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "using user-supplied volume_mode=%d\n",
+ volume_mode);
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "mute is supported, volume control is %s\n",
+ str_supported(!tp_features.mixer_no_level_control));
+
+ if (software_mute_requested && volume_set_software_mute(true) == 0) {
+ software_mute_active = true;
+ } else {
+ rc = volume_create_alsa_mixer();
+ if (rc) {
+ pr_err("Could not create the ALSA mixer interface\n");
+ return rc;
+ }
+
+ pr_info("Console audio control enabled, mode: %s\n",
+ (volume_control_allowed) ?
+ "override (read/write)" :
+ "monitor (read only)");
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "registering volume hotkeys as change notification\n");
+ tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
+ | TP_ACPI_HKEY_VOLUP_MASK
+ | TP_ACPI_HKEY_VOLDWN_MASK
+ | TP_ACPI_HKEY_MUTE_MASK);
+
+ return 0;
+}
+
+static int volume_read(struct seq_file *m)
+{
+ u8 status;
+
+ if (volume_get_status(&status) < 0) {
+ seq_printf(m, "level:\t\tunreadable\n");
+ } else {
+ if (tp_features.mixer_no_level_control)
+ seq_printf(m, "level:\t\tunsupported\n");
+ else
+ seq_printf(m, "level:\t\t%d\n",
+ status & TP_EC_AUDIO_LVL_MSK);
+
+ seq_printf(m, "mute:\t\t%s\n",
+ onoff(status, TP_EC_AUDIO_MUTESW));
+
+ if (volume_control_allowed) {
+ seq_printf(m, "commands:\tunmute, mute\n");
+ if (!tp_features.mixer_no_level_control) {
+ seq_printf(m,
+ "commands:\tup, down\n");
+ seq_printf(m,
+ "commands:\tlevel <level>"
+ " (<level> is 0-%d)\n",
+ TP_EC_VOLUME_MAX);
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int volume_write(char *buf)
+{
+ u8 s;
+ u8 new_level, new_mute;
+ int l;
+ char *cmd;
+ int rc;
+
+ /*
+ * We do allow volume control at driver startup, so that the
+ * user can set initial state through the volume=... parameter hack.
+ */
+ if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
+ if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
+ tp_warned.volume_ctrl_forbidden = 1;
+ pr_notice("Console audio control in monitor mode, "
+ "changes are not allowed\n");
+ pr_notice("Use the volume_control=1 module parameter "
+ "to enable volume control\n");
+ }
+ return -EPERM;
+ }
+
+ rc = volume_get_status(&s);
+ if (rc < 0)
+ return rc;
+
+ new_level = s & TP_EC_AUDIO_LVL_MSK;
+ new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
+
+ while ((cmd = next_cmd(&buf))) {
+ if (!tp_features.mixer_no_level_control) {
+ if (strlencmp(cmd, "up") == 0) {
+ if (new_mute)
+ new_mute = 0;
+ else if (new_level < TP_EC_VOLUME_MAX)
+ new_level++;
+ continue;
+ } else if (strlencmp(cmd, "down") == 0) {
+ if (new_mute)
+ new_mute = 0;
+ else if (new_level > 0)
+ new_level--;
+ continue;
+ } else if (sscanf(cmd, "level %u", &l) == 1 &&
+ l >= 0 && l <= TP_EC_VOLUME_MAX) {
+ new_level = l;
+ continue;
+ }
+ }
+ if (strlencmp(cmd, "mute") == 0)
+ new_mute = TP_EC_AUDIO_MUTESW_MSK;
+ else if (strlencmp(cmd, "unmute") == 0)
+ new_mute = 0;
+ else
+ return -EINVAL;
+ }
+
+ if (tp_features.mixer_no_level_control) {
+ tpacpi_disclose_usertask("procfs volume", "%smute\n",
+ new_mute ? "" : "un");
+ rc = volume_set_mute(!!new_mute);
+ } else {
+ tpacpi_disclose_usertask("procfs volume",
+ "%smute and set level to %d\n",
+ new_mute ? "" : "un", new_level);
+ rc = volume_set_status(new_mute | new_level);
+ }
+ volume_alsa_notify_change();
+
+ return (rc == -EINTR) ? -ERESTARTSYS : rc;
+}
+
+static struct ibm_struct volume_driver_data = {
+ .name = "volume",
+ .read = volume_read,
+ .write = volume_write,
+ .exit = volume_exit,
+ .suspend = volume_suspend,
+ .resume = volume_resume,
+ .shutdown = volume_shutdown,
+};
+
+#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
+
+#define alsa_card NULL
+
+static void inline volume_alsa_notify_change(void)
+{
+}
+
+static int __init volume_init(struct ibm_init_struct *iibm)
+{
+ pr_info("volume: disabled as there is no ALSA support in this kernel\n");
+
+ return 1;
+}
+
+static struct ibm_struct volume_driver_data = {
+ .name = "volume",
+};
+
+#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
+
+/*************************************************************************
+ * Fan subdriver
+ */
+
+/*
+ * FAN ACCESS MODES
+ *
+ * TPACPI_FAN_RD_ACPI_GFAN:
+ * ACPI GFAN method: returns fan level
+ *
+ * see TPACPI_FAN_WR_ACPI_SFAN
+ * EC 0x2f (HFSP) not available if GFAN exists
+ *
+ * TPACPI_FAN_WR_ACPI_SFAN:
+ * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
+ *
+ * EC 0x2f (HFSP) might be available *for reading*, but do not use
+ * it for writing.
+ *
+ * TPACPI_FAN_WR_TPEC:
+ * ThinkPad EC register 0x2f (HFSP): fan control loop mode
+ * Supported on almost all ThinkPads
+ *
+ * Fan speed changes of any sort (including those caused by the
+ * disengaged mode) are usually done slowly by the firmware as the
+ * maximum amount of fan duty cycle change per second seems to be
+ * limited.
+ *
+ * Reading is not available if GFAN exists.
+ * Writing is not available if SFAN exists.
+ *
+ * Bits
+ * 7 automatic mode engaged;
+ * (default operation mode of the ThinkPad)
+ * fan level is ignored in this mode.
+ * 6 full speed mode (takes precedence over bit 7);
+ * not available on all thinkpads. May disable
+ * the tachometer while the fan controller ramps up
+ * the speed (which can take up to a few *minutes*).
+ * Speeds up fan to 100% duty-cycle, which is far above
+ * the standard RPM levels. It is not impossible that
+ * it could cause hardware damage.
+ * 5-3 unused in some models. Extra bits for fan level
+ * in others, but still useless as all values above
+ * 7 map to the same speed as level 7 in these models.
+ * 2-0 fan level (0..7 usually)
+ * 0x00 = stop
+ * 0x07 = max (set when temperatures critical)
+ * Some ThinkPads may have other levels, see
+ * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
+ *
+ * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
+ * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
+ * does so, its initial value is meaningless (0x07).
+ *
+ * For firmware bugs, refer to:
+ * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
+ *
+ * ----
+ *
+ * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
+ * Main fan tachometer reading (in RPM)
+ *
+ * This register is present on all ThinkPads with a new-style EC, and
+ * it is known not to be present on the A21m/e, and T22, as there is
+ * something else in offset 0x84 according to the ACPI DSDT. Other
+ * ThinkPads from this same time period (and earlier) probably lack the
+ * tachometer as well.
+ *
+ * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
+ * was never fixed by IBM to report the EC firmware version string
+ * probably support the tachometer (like the early X models), so
+ * detecting it is quite hard. We need more data to know for sure.
+ *
+ * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
+ * might result.
+ *
+ * FIRMWARE BUG: may go stale while the EC is switching to full speed
+ * mode.
+ *
+ * For firmware bugs, refer to:
+ * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
+ *
+ * ----
+ *
+ * ThinkPad EC register 0x31 bit 0 (only on select models)
+ *
+ * When bit 0 of EC register 0x31 is zero, the tachometer registers
+ * show the speed of the main fan. When bit 0 of EC register 0x31
+ * is one, the tachometer registers show the speed of the auxiliary
+ * fan.
+ *
+ * Fan control seems to affect both fans, regardless of the state
+ * of this bit.
+ *
+ * So far, only the firmware for the X60/X61 non-tablet versions
+ * seem to support this (firmware TP-7M).
+ *
+ * TPACPI_FAN_WR_ACPI_FANS:
+ * ThinkPad X31, X40, X41. Not available in the X60.
+ *
+ * FANS ACPI handle: takes three arguments: low speed, medium speed,
+ * high speed. ACPI DSDT seems to map these three speeds to levels
+ * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
+ * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
+ *
+ * The speeds are stored on handles
+ * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
+ *
+ * There are three default speed sets, accessible as handles:
+ * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
+ *
+ * ACPI DSDT switches which set is in use depending on various
+ * factors.
+ *
+ * TPACPI_FAN_WR_TPEC is also available and should be used to
+ * command the fan. The X31/X40/X41 seems to have 8 fan levels,
+ * but the ACPI tables just mention level 7.
+ */
+
+enum { /* Fan control constants */
+ fan_status_offset = 0x2f, /* EC register 0x2f */
+ fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
+ * 0x84 must be read before 0x85 */
+ fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
+ bit 0 selects which fan is active */
+
+ TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
+ TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
+
+ TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
+};
+
+enum fan_status_access_mode {
+ TPACPI_FAN_NONE = 0, /* No fan status or control */
+ TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
+ TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
+};
+
+enum fan_control_access_mode {
+ TPACPI_FAN_WR_NONE = 0, /* No fan control */
+ TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
+ TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
+ TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
+};
+
+enum fan_control_commands {
+ TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
+ TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
+ TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
+ * and also watchdog cmd */
+};
+
+static bool fan_control_allowed;
+
+static enum fan_status_access_mode fan_status_access_mode;
+static enum fan_control_access_mode fan_control_access_mode;
+static enum fan_control_commands fan_control_commands;
+
+static u8 fan_control_initial_status;
+static u8 fan_control_desired_level;
+static u8 fan_control_resume_level;
+static int fan_watchdog_maxinterval;
+
+static struct mutex fan_mutex;
+
+static void fan_watchdog_fire(struct work_struct *ignored);
+static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
+
+TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
+TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
+ "\\FSPD", /* 600e/x, 770e, 770x */
+ ); /* all others */
+TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
+ "JFNS", /* 770x-JL */
+ ); /* all others */
+
+/*
+ * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
+ * HFSP register at boot, so it contains 0x07 but the Thinkpad could
+ * be in auto mode (0x80).
+ *
+ * This is corrected by any write to HFSP either by the driver, or
+ * by the firmware.
+ *
+ * We assume 0x07 really means auto mode while this quirk is active,
+ * as this is far more likely than the ThinkPad being in level 7,
+ * which is only used by the firmware during thermal emergencies.
+ *
+ * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
+ * TP-70 (T43, R52), which are known to be buggy.
+ */
+
+static void fan_quirk1_setup(void)
+{
+ if (fan_control_initial_status == 0x07) {
+ pr_notice("fan_init: initial fan status is unknown, "
+ "assuming it is in auto mode\n");
+ tp_features.fan_ctrl_status_undef = 1;
+ }
+}
+
+static void fan_quirk1_handle(u8 *fan_status)
+{
+ if (unlikely(tp_features.fan_ctrl_status_undef)) {
+ if (*fan_status != fan_control_initial_status) {
+ /* something changed the HFSP regisnter since
+ * driver init time, so it is not undefined
+ * anymore */
+ tp_features.fan_ctrl_status_undef = 0;
+ } else {
+ /* Return most likely status. In fact, it
+ * might be the only possible status */
+ *fan_status = TP_EC_FAN_AUTO;
+ }
+ }
+}
+
+/* Select main fan on X60/X61, NOOP on others */
+static bool fan_select_fan1(void)
+{
+ if (tp_features.second_fan) {
+ u8 val;
+
+ if (ec_read(fan_select_offset, &val) < 0)
+ return false;
+ val &= 0xFEU;
+ if (ec_write(fan_select_offset, val) < 0)
+ return false;
+ }
+ return true;
+}
+
+/* Select secondary fan on X60/X61 */
+static bool fan_select_fan2(void)
+{
+ u8 val;
+
+ if (!tp_features.second_fan)
+ return false;
+
+ if (ec_read(fan_select_offset, &val) < 0)
+ return false;
+ val |= 0x01U;
+ if (ec_write(fan_select_offset, val) < 0)
+ return false;
+
+ return true;
+}
+
+/*
+ * Call with fan_mutex held
+ */
+static void fan_update_desired_level(u8 status)
+{
+ if ((status &
+ (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
+ if (status > 7)
+ fan_control_desired_level = 7;
+ else
+ fan_control_desired_level = status;
+ }
+}
+
+static int fan_get_status(u8 *status)
+{
+ u8 s;
+
+ /* TODO:
+ * Add TPACPI_FAN_RD_ACPI_FANS ? */
+
+ switch (fan_status_access_mode) {
+ case TPACPI_FAN_RD_ACPI_GFAN: {
+ /* 570, 600e/x, 770e, 770x */
+ int res;
+
+ if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
+ return -EIO;
+
+ if (likely(status))
+ *status = res & 0x07;
+
+ break;
+ }
+ case TPACPI_FAN_RD_TPEC:
+ /* all except 570, 600e/x, 770e, 770x */
+ if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
+ return -EIO;
+
+ if (likely(status)) {
+ *status = s;
+ fan_quirk1_handle(status);
+ }
+
+ break;
+
+ default:
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int fan_get_status_safe(u8 *status)
+{
+ int rc;
+ u8 s;
+
+ if (mutex_lock_killable(&fan_mutex))
+ return -ERESTARTSYS;
+ rc = fan_get_status(&s);
+ if (!rc)
+ fan_update_desired_level(s);
+ mutex_unlock(&fan_mutex);
+
+ if (status)
+ *status = s;
+
+ return rc;
+}
+
+static int fan_get_speed(unsigned int *speed)
+{
+ u8 hi, lo;
+
+ switch (fan_status_access_mode) {
+ case TPACPI_FAN_RD_TPEC:
+ /* all except 570, 600e/x, 770e, 770x */
+ if (unlikely(!fan_select_fan1()))
+ return -EIO;
+ if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
+ !acpi_ec_read(fan_rpm_offset + 1, &hi)))
+ return -EIO;
+
+ if (likely(speed))
+ *speed = (hi << 8) | lo;
+
+ break;
+
+ default:
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int fan2_get_speed(unsigned int *speed)
+{
+ u8 hi, lo;
+ bool rc;
+
+ switch (fan_status_access_mode) {
+ case TPACPI_FAN_RD_TPEC:
+ /* all except 570, 600e/x, 770e, 770x */
+ if (unlikely(!fan_select_fan2()))
+ return -EIO;
+ rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
+ !acpi_ec_read(fan_rpm_offset + 1, &hi);
+ fan_select_fan1(); /* play it safe */
+ if (rc)
+ return -EIO;
+
+ if (likely(speed))
+ *speed = (hi << 8) | lo;
+
+ break;
+
+ default:
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int fan_set_level(int level)
+{
+ if (!fan_control_allowed)
+ return -EPERM;
+
+ switch (fan_control_access_mode) {
+ case TPACPI_FAN_WR_ACPI_SFAN:
+ if (level >= 0 && level <= 7) {
+ if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
+ return -EIO;
+ } else
+ return -EINVAL;
+ break;
+
+ case TPACPI_FAN_WR_ACPI_FANS:
+ case TPACPI_FAN_WR_TPEC:
+ if (!(level & TP_EC_FAN_AUTO) &&
+ !(level & TP_EC_FAN_FULLSPEED) &&
+ ((level < 0) || (level > 7)))
+ return -EINVAL;
+
+ /* safety net should the EC not support AUTO
+ * or FULLSPEED mode bits and just ignore them */
+ if (level & TP_EC_FAN_FULLSPEED)
+ level |= 7; /* safety min speed 7 */
+ else if (level & TP_EC_FAN_AUTO)
+ level |= 4; /* safety min speed 4 */
+
+ if (!acpi_ec_write(fan_status_offset, level))
+ return -EIO;
+ else
+ tp_features.fan_ctrl_status_undef = 0;
+ break;
+
+ default:
+ return -ENXIO;
+ }
+
+ vdbg_printk(TPACPI_DBG_FAN,
+ "fan control: set fan control register to 0x%02x\n", level);
+ return 0;
+}
+
+static int fan_set_level_safe(int level)
+{
+ int rc;
+
+ if (!fan_control_allowed)
+ return -EPERM;
+
+ if (mutex_lock_killable(&fan_mutex))
+ return -ERESTARTSYS;
+
+ if (level == TPACPI_FAN_LAST_LEVEL)
+ level = fan_control_desired_level;
+
+ rc = fan_set_level(level);
+ if (!rc)
+ fan_update_desired_level(level);
+
+ mutex_unlock(&fan_mutex);
+ return rc;
+}
+
+static int fan_set_enable(void)
+{
+ u8 s;
+ int rc;
+
+ if (!fan_control_allowed)
+ return -EPERM;
+
+ if (mutex_lock_killable(&fan_mutex))
+ return -ERESTARTSYS;
+
+ switch (fan_control_access_mode) {
+ case TPACPI_FAN_WR_ACPI_FANS:
+ case TPACPI_FAN_WR_TPEC:
+ rc = fan_get_status(&s);
+ if (rc < 0)
+ break;
+
+ /* Don't go out of emergency fan mode */
+ if (s != 7) {
+ s &= 0x07;
+ s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
+ }
+
+ if (!acpi_ec_write(fan_status_offset, s))
+ rc = -EIO;
+ else {
+ tp_features.fan_ctrl_status_undef = 0;
+ rc = 0;
+ }
+ break;
+
+ case TPACPI_FAN_WR_ACPI_SFAN:
+ rc = fan_get_status(&s);
+ if (rc < 0)
+ break;
+
+ s &= 0x07;
+
+ /* Set fan to at least level 4 */
+ s |= 4;
+
+ if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
+ rc = -EIO;
+ else
+ rc = 0;
+ break;
+
+ default:
+ rc = -ENXIO;
+ }
+
+ mutex_unlock(&fan_mutex);
+
+ if (!rc)
+ vdbg_printk(TPACPI_DBG_FAN,
+ "fan control: set fan control register to 0x%02x\n",
+ s);
+ return rc;
+}
+
+static int fan_set_disable(void)
+{
+ int rc;
+
+ if (!fan_control_allowed)
+ return -EPERM;
+
+ if (mutex_lock_killable(&fan_mutex))
+ return -ERESTARTSYS;
+
+ rc = 0;
+ switch (fan_control_access_mode) {
+ case TPACPI_FAN_WR_ACPI_FANS:
+ case TPACPI_FAN_WR_TPEC:
+ if (!acpi_ec_write(fan_status_offset, 0x00))
+ rc = -EIO;
+ else {
+ fan_control_desired_level = 0;
+ tp_features.fan_ctrl_status_undef = 0;
+ }
+ break;
+
+ case TPACPI_FAN_WR_ACPI_SFAN:
+ if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
+ rc = -EIO;
+ else
+ fan_control_desired_level = 0;
+ break;
+
+ default:
+ rc = -ENXIO;
+ }
+
+ if (!rc)
+ vdbg_printk(TPACPI_DBG_FAN,
+ "fan control: set fan control register to 0\n");
+
+ mutex_unlock(&fan_mutex);
+ return rc;
+}
+
+static int fan_set_speed(int speed)
+{
+ int rc;
+
+ if (!fan_control_allowed)
+ return -EPERM;
+
+ if (mutex_lock_killable(&fan_mutex))
+ return -ERESTARTSYS;
+
+ rc = 0;
+ switch (fan_control_access_mode) {
+ case TPACPI_FAN_WR_ACPI_FANS:
+ if (speed >= 0 && speed <= 65535) {
+ if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
+ speed, speed, speed))
+ rc = -EIO;
+ } else
+ rc = -EINVAL;
+ break;
+
+ default:
+ rc = -ENXIO;
+ }
+
+ mutex_unlock(&fan_mutex);
+ return rc;
+}
+
+static void fan_watchdog_reset(void)
+{
+ if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
+ return;
+
+ if (fan_watchdog_maxinterval > 0 &&
+ tpacpi_lifecycle != TPACPI_LIFE_EXITING)
+ mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
+ msecs_to_jiffies(fan_watchdog_maxinterval * 1000));
+ else
+ cancel_delayed_work(&fan_watchdog_task);
+}
+
+static void fan_watchdog_fire(struct work_struct *ignored)
+{
+ int rc;
+
+ if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
+ return;
+
+ pr_notice("fan watchdog: enabling fan\n");
+ rc = fan_set_enable();
+ if (rc < 0) {
+ pr_err("fan watchdog: error %d while enabling fan, "
+ "will try again later...\n", -rc);
+ /* reschedule for later */
+ fan_watchdog_reset();
+ }
+}
+
+/*
+ * SYSFS fan layout: hwmon compatible (device)
+ *
+ * pwm*_enable:
+ * 0: "disengaged" mode
+ * 1: manual mode
+ * 2: native EC "auto" mode (recommended, hardware default)
+ *
+ * pwm*: set speed in manual mode, ignored otherwise.
+ * 0 is level 0; 255 is level 7. Intermediate points done with linear
+ * interpolation.
+ *
+ * fan*_input: tachometer reading, RPM
+ *
+ *
+ * SYSFS fan layout: extensions
+ *
+ * fan_watchdog (driver):
+ * fan watchdog interval in seconds, 0 disables (default), max 120
+ */
+
+/* sysfs fan pwm1_enable ----------------------------------------------- */
+static ssize_t fan_pwm1_enable_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res, mode;
+ u8 status;
+
+ res = fan_get_status_safe(&status);
+ if (res)
+ return res;
+
+ if (status & TP_EC_FAN_FULLSPEED) {
+ mode = 0;
+ } else if (status & TP_EC_FAN_AUTO) {
+ mode = 2;
+ } else
+ mode = 1;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", mode);
+}
+
+static ssize_t fan_pwm1_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+ int res, level;
+
+ if (parse_strtoul(buf, 2, &t))
+ return -EINVAL;
+
+ tpacpi_disclose_usertask("hwmon pwm1_enable",
+ "set fan mode to %lu\n", t);
+
+ switch (t) {
+ case 0:
+ level = TP_EC_FAN_FULLSPEED;
+ break;
+ case 1:
+ level = TPACPI_FAN_LAST_LEVEL;
+ break;
+ case 2:
+ level = TP_EC_FAN_AUTO;
+ break;
+ case 3:
+ /* reserved for software-controlled auto mode */
+ return -ENOSYS;
+ default:
+ return -EINVAL;
+ }
+
+ res = fan_set_level_safe(level);
+ if (res == -ENXIO)
+ return -EINVAL;
+ else if (res < 0)
+ return res;
+
+ fan_watchdog_reset();
+
+ return count;
+}
+
+static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
+ fan_pwm1_enable_show, fan_pwm1_enable_store);
+
+/* sysfs fan pwm1 ------------------------------------------------------ */
+static ssize_t fan_pwm1_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res;
+ u8 status;
+
+ res = fan_get_status_safe(&status);
+ if (res)
+ return res;
+
+ if ((status &
+ (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
+ status = fan_control_desired_level;
+
+ if (status > 7)
+ status = 7;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
+}
+
+static ssize_t fan_pwm1_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long s;
+ int rc;
+ u8 status, newlevel;
+
+ if (parse_strtoul(buf, 255, &s))
+ return -EINVAL;
+
+ tpacpi_disclose_usertask("hwmon pwm1",
+ "set fan speed to %lu\n", s);
+
+ /* scale down from 0-255 to 0-7 */
+ newlevel = (s >> 5) & 0x07;
+
+ if (mutex_lock_killable(&fan_mutex))
+ return -ERESTARTSYS;
+
+ rc = fan_get_status(&status);
+ if (!rc && (status &
+ (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
+ rc = fan_set_level(newlevel);
+ if (rc == -ENXIO)
+ rc = -EINVAL;
+ else if (!rc) {
+ fan_update_desired_level(newlevel);
+ fan_watchdog_reset();
+ }
+ }
+
+ mutex_unlock(&fan_mutex);
+ return (rc) ? rc : count;
+}
+
+static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store);
+
+/* sysfs fan fan1_input ------------------------------------------------ */
+static ssize_t fan_fan1_input_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res;
+ unsigned int speed;
+
+ res = fan_get_speed(&speed);
+ if (res < 0)
+ return res;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", speed);
+}
+
+static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL);
+
+/* sysfs fan fan2_input ------------------------------------------------ */
+static ssize_t fan_fan2_input_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res;
+ unsigned int speed;
+
+ res = fan2_get_speed(&speed);
+ if (res < 0)
+ return res;
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", speed);
+}
+
+static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL);
+
+/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
+static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
+}
+
+static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 120, &t))
+ return -EINVAL;
+
+ if (!fan_control_allowed)
+ return -EPERM;
+
+ fan_watchdog_maxinterval = t;
+ fan_watchdog_reset();
+
+ tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
+
+ return count;
+}
+
+static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
+ fan_fan_watchdog_show, fan_fan_watchdog_store);
+
+/* --------------------------------------------------------------------- */
+static struct attribute *fan_attributes[] = {
+ &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr,
+ &dev_attr_fan1_input.attr,
+ NULL, /* for fan2_input */
+ NULL
+};
+
+static const struct attribute_group fan_attr_group = {
+ .attrs = fan_attributes,
+};
+
+#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
+#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
+
+#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
+ { .vendor = PCI_VENDOR_ID_IBM, \
+ .bios = TPACPI_MATCH_ANY, \
+ .ec = TPID(__id1, __id2), \
+ .quirks = __quirks }
+
+#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
+ { .vendor = PCI_VENDOR_ID_LENOVO, \
+ .bios = TPACPI_MATCH_ANY, \
+ .ec = TPID(__id1, __id2), \
+ .quirks = __quirks }
+
+static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
+ TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
+ TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
+ TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
+ TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
+ TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
+};
+
+#undef TPACPI_FAN_QL
+#undef TPACPI_FAN_QI
+
+static int __init fan_init(struct ibm_init_struct *iibm)
+{
+ int rc;
+ unsigned long quirks;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
+ "initializing fan subdriver\n");
+
+ mutex_init(&fan_mutex);
+ fan_status_access_mode = TPACPI_FAN_NONE;
+ fan_control_access_mode = TPACPI_FAN_WR_NONE;
+ fan_control_commands = 0;
+ fan_watchdog_maxinterval = 0;
+ tp_features.fan_ctrl_status_undef = 0;
+ tp_features.second_fan = 0;
+ fan_control_desired_level = 7;
+
+ if (tpacpi_is_ibm()) {
+ TPACPI_ACPIHANDLE_INIT(fans);
+ TPACPI_ACPIHANDLE_INIT(gfan);
+ TPACPI_ACPIHANDLE_INIT(sfan);
+ }
+
+ quirks = tpacpi_check_quirks(fan_quirk_table,
+ ARRAY_SIZE(fan_quirk_table));
+
+ if (gfan_handle) {
+ /* 570, 600e/x, 770e, 770x */
+ fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
+ } else {
+ /* all other ThinkPads: note that even old-style
+ * ThinkPad ECs supports the fan control register */
+ if (likely(acpi_ec_read(fan_status_offset,
+ &fan_control_initial_status))) {
+ fan_status_access_mode = TPACPI_FAN_RD_TPEC;
+ if (quirks & TPACPI_FAN_Q1)
+ fan_quirk1_setup();
+ if (quirks & TPACPI_FAN_2FAN) {
+ tp_features.second_fan = 1;
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
+ "secondary fan support enabled\n");
+ }
+ } else {
+ pr_err("ThinkPad ACPI EC access misbehaving, "
+ "fan status and control unavailable\n");
+ return 1;
+ }
+ }
+
+ if (sfan_handle) {
+ /* 570, 770x-JL */
+ fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
+ fan_control_commands |=
+ TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
+ } else {
+ if (!gfan_handle) {
+ /* gfan without sfan means no fan control */
+ /* all other models implement TP EC 0x2f control */
+
+ if (fans_handle) {
+ /* X31, X40, X41 */
+ fan_control_access_mode =
+ TPACPI_FAN_WR_ACPI_FANS;
+ fan_control_commands |=
+ TPACPI_FAN_CMD_SPEED |
+ TPACPI_FAN_CMD_LEVEL |
+ TPACPI_FAN_CMD_ENABLE;
+ } else {
+ fan_control_access_mode = TPACPI_FAN_WR_TPEC;
+ fan_control_commands |=
+ TPACPI_FAN_CMD_LEVEL |
+ TPACPI_FAN_CMD_ENABLE;
+ }
+ }
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
+ "fan is %s, modes %d, %d\n",
+ str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
+ fan_control_access_mode != TPACPI_FAN_WR_NONE),
+ fan_status_access_mode, fan_control_access_mode);
+
+ /* fan control master switch */
+ if (!fan_control_allowed) {
+ fan_control_access_mode = TPACPI_FAN_WR_NONE;
+ fan_control_commands = 0;
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
+ "fan control features disabled by parameter\n");
+ }
+
+ /* update fan_control_desired_level */
+ if (fan_status_access_mode != TPACPI_FAN_NONE)
+ fan_get_status_safe(NULL);
+
+ if (fan_status_access_mode != TPACPI_FAN_NONE ||
+ fan_control_access_mode != TPACPI_FAN_WR_NONE) {
+ if (tp_features.second_fan) {
+ /* attach second fan tachometer */
+ fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
+ &dev_attr_fan2_input.attr;
+ }
+ rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
+ &fan_attr_group);
+ if (rc < 0)
+ return rc;
+
+ rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
+ &driver_attr_fan_watchdog);
+ if (rc < 0) {
+ sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
+ &fan_attr_group);
+ return rc;
+ }
+ return 0;
+ } else
+ return 1;
+}
+
+static void fan_exit(void)
+{
+ vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
+ "cancelling any pending fan watchdog tasks\n");
+
+ /* FIXME: can we really do this unconditionally? */
+ sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
+ driver_remove_file(&tpacpi_hwmon_pdriver.driver,
+ &driver_attr_fan_watchdog);
+
+ cancel_delayed_work(&fan_watchdog_task);
+ flush_workqueue(tpacpi_wq);
+}
+
+static void fan_suspend(void)
+{
+ int rc;
+
+ if (!fan_control_allowed)
+ return;
+
+ /* Store fan status in cache */
+ fan_control_resume_level = 0;
+ rc = fan_get_status_safe(&fan_control_resume_level);
+ if (rc < 0)
+ pr_notice("failed to read fan level for later "
+ "restore during resume: %d\n", rc);
+
+ /* if it is undefined, don't attempt to restore it.
+ * KEEP THIS LAST */
+ if (tp_features.fan_ctrl_status_undef)
+ fan_control_resume_level = 0;
+}
+
+static void fan_resume(void)
+{
+ u8 current_level = 7;
+ bool do_set = false;
+ int rc;
+
+ /* DSDT *always* updates status on resume */
+ tp_features.fan_ctrl_status_undef = 0;
+
+ if (!fan_control_allowed ||
+ !fan_control_resume_level ||
+ (fan_get_status_safe(&current_level) < 0))
+ return;
+
+ switch (fan_control_access_mode) {
+ case TPACPI_FAN_WR_ACPI_SFAN:
+ /* never decrease fan level */
+ do_set = (fan_control_resume_level > current_level);
+ break;
+ case TPACPI_FAN_WR_ACPI_FANS:
+ case TPACPI_FAN_WR_TPEC:
+ /* never decrease fan level, scale is:
+ * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
+ *
+ * We expect the firmware to set either 7 or AUTO, but we
+ * handle FULLSPEED out of paranoia.
+ *
+ * So, we can safely only restore FULLSPEED or 7, anything
+ * else could slow the fan. Restoring AUTO is useless, at
+ * best that's exactly what the DSDT already set (it is the
+ * slower it uses).
+ *
+ * Always keep in mind that the DSDT *will* have set the
+ * fans to what the vendor supposes is the best level. We
+ * muck with it only to speed the fan up.
+ */
+ if (fan_control_resume_level != 7 &&
+ !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
+ return;
+ else
+ do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
+ (current_level != fan_control_resume_level);
+ break;
+ default:
+ return;
+ }
+ if (do_set) {
+ pr_notice("restoring fan level to 0x%02x\n",
+ fan_control_resume_level);
+ rc = fan_set_level_safe(fan_control_resume_level);
+ if (rc < 0)
+ pr_notice("failed to restore fan level: %d\n", rc);
+ }
+}
+
+static int fan_read(struct seq_file *m)
+{
+ int rc;
+ u8 status;
+ unsigned int speed = 0;
+
+ switch (fan_status_access_mode) {
+ case TPACPI_FAN_RD_ACPI_GFAN:
+ /* 570, 600e/x, 770e, 770x */
+ rc = fan_get_status_safe(&status);
+ if (rc < 0)
+ return rc;
+
+ seq_printf(m, "status:\t\t%s\n"
+ "level:\t\t%d\n",
+ (status != 0) ? "enabled" : "disabled", status);
+ break;
+
+ case TPACPI_FAN_RD_TPEC:
+ /* all except 570, 600e/x, 770e, 770x */
+ rc = fan_get_status_safe(&status);
+ if (rc < 0)
+ return rc;
+
+ seq_printf(m, "status:\t\t%s\n",
+ (status != 0) ? "enabled" : "disabled");
+
+ rc = fan_get_speed(&speed);
+ if (rc < 0)
+ return rc;
+
+ seq_printf(m, "speed:\t\t%d\n", speed);
+
+ if (status & TP_EC_FAN_FULLSPEED)
+ /* Disengaged mode takes precedence */
+ seq_printf(m, "level:\t\tdisengaged\n");
+ else if (status & TP_EC_FAN_AUTO)
+ seq_printf(m, "level:\t\tauto\n");
+ else
+ seq_printf(m, "level:\t\t%d\n", status);
+ break;
+
+ case TPACPI_FAN_NONE:
+ default:
+ seq_printf(m, "status:\t\tnot supported\n");
+ }
+
+ if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
+ seq_printf(m, "commands:\tlevel <level>");
+
+ switch (fan_control_access_mode) {
+ case TPACPI_FAN_WR_ACPI_SFAN:
+ seq_printf(m, " (<level> is 0-7)\n");
+ break;
+
+ default:
+ seq_printf(m, " (<level> is 0-7, "
+ "auto, disengaged, full-speed)\n");
+ break;
+ }
+ }
+
+ if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
+ seq_printf(m, "commands:\tenable, disable\n"
+ "commands:\twatchdog <timeout> (<timeout> "
+ "is 0 (off), 1-120 (seconds))\n");
+
+ if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
+ seq_printf(m, "commands:\tspeed <speed>"
+ " (<speed> is 0-65535)\n");
+
+ return 0;
+}
+
+static int fan_write_cmd_level(const char *cmd, int *rc)
+{
+ int level;
+
+ if (strlencmp(cmd, "level auto") == 0)
+ level = TP_EC_FAN_AUTO;
+ else if ((strlencmp(cmd, "level disengaged") == 0) |
+ (strlencmp(cmd, "level full-speed") == 0))
+ level = TP_EC_FAN_FULLSPEED;
+ else if (sscanf(cmd, "level %d", &level) != 1)
+ return 0;
+
+ *rc = fan_set_level_safe(level);
+ if (*rc == -ENXIO)
+ pr_err("level command accepted for unsupported access mode %d\n",
+ fan_control_access_mode);
+ else if (!*rc)
+ tpacpi_disclose_usertask("procfs fan",
+ "set level to %d\n", level);
+
+ return 1;
+}
+
+static int fan_write_cmd_enable(const char *cmd, int *rc)
+{
+ if (strlencmp(cmd, "enable") != 0)
+ return 0;
+
+ *rc = fan_set_enable();
+ if (*rc == -ENXIO)
+ pr_err("enable command accepted for unsupported access mode %d\n",
+ fan_control_access_mode);
+ else if (!*rc)
+ tpacpi_disclose_usertask("procfs fan", "enable\n");
+
+ return 1;
+}
+
+static int fan_write_cmd_disable(const char *cmd, int *rc)
+{
+ if (strlencmp(cmd, "disable") != 0)
+ return 0;
+
+ *rc = fan_set_disable();
+ if (*rc == -ENXIO)
+ pr_err("disable command accepted for unsupported access mode %d\n",
+ fan_control_access_mode);
+ else if (!*rc)
+ tpacpi_disclose_usertask("procfs fan", "disable\n");
+
+ return 1;
+}
+
+static int fan_write_cmd_speed(const char *cmd, int *rc)
+{
+ int speed;
+
+ /* TODO:
+ * Support speed <low> <medium> <high> ? */
+
+ if (sscanf(cmd, "speed %d", &speed) != 1)
+ return 0;
+
+ *rc = fan_set_speed(speed);
+ if (*rc == -ENXIO)
+ pr_err("speed command accepted for unsupported access mode %d\n",
+ fan_control_access_mode);
+ else if (!*rc)
+ tpacpi_disclose_usertask("procfs fan",
+ "set speed to %d\n", speed);
+
+ return 1;
+}
+
+static int fan_write_cmd_watchdog(const char *cmd, int *rc)
+{
+ int interval;
+
+ if (sscanf(cmd, "watchdog %d", &interval) != 1)
+ return 0;
+
+ if (interval < 0 || interval > 120)
+ *rc = -EINVAL;
+ else {
+ fan_watchdog_maxinterval = interval;
+ tpacpi_disclose_usertask("procfs fan",
+ "set watchdog timer to %d\n",
+ interval);
+ }
+
+ return 1;
+}
+
+static int fan_write(char *buf)
+{
+ char *cmd;
+ int rc = 0;
+
+ while (!rc && (cmd = next_cmd(&buf))) {
+ if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
+ fan_write_cmd_level(cmd, &rc)) &&
+ !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
+ (fan_write_cmd_enable(cmd, &rc) ||
+ fan_write_cmd_disable(cmd, &rc) ||
+ fan_write_cmd_watchdog(cmd, &rc))) &&
+ !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
+ fan_write_cmd_speed(cmd, &rc))
+ )
+ rc = -EINVAL;
+ else if (!rc)
+ fan_watchdog_reset();
+ }
+
+ return rc;
+}
+
+static struct ibm_struct fan_driver_data = {
+ .name = "fan",
+ .read = fan_read,
+ .write = fan_write,
+ .exit = fan_exit,
+ .suspend = fan_suspend,
+ .resume = fan_resume,
+};
+
+/*************************************************************************
+ * Mute LED subdriver
+ */
+
+
+struct tp_led_table {
+ acpi_string name;
+ int on_value;
+ int off_value;
+ int state;
+};
+
+static struct tp_led_table led_tables[] = {
+ [TPACPI_LED_MUTE] = {
+ .name = "SSMS",
+ .on_value = 1,
+ .off_value = 0,
+ },
+ [TPACPI_LED_MICMUTE] = {
+ .name = "MMTS",
+ .on_value = 2,
+ .off_value = 0,
+ },
+};
+
+static int mute_led_on_off(struct tp_led_table *t, bool state)
+{
+ acpi_handle temp;
+ int output;
+
+ if (!ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp))) {
+ pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
+ return -EIO;
+ }
+
+ if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
+ state ? t->on_value : t->off_value))
+ return -EIO;
+
+ t->state = state;
+ return state;
+}
+
+int tpacpi_led_set(int whichled, bool on)
+{
+ struct tp_led_table *t;
+
+ if (whichled < 0 || whichled >= TPACPI_LED_MAX)
+ return -EINVAL;
+
+ t = &led_tables[whichled];
+ if (t->state < 0 || t->state == on)
+ return t->state;
+ return mute_led_on_off(t, on);
+}
+EXPORT_SYMBOL_GPL(tpacpi_led_set);
+
+static int mute_led_init(struct ibm_init_struct *iibm)
+{
+ acpi_handle temp;
+ int i;
+
+ for (i = 0; i < TPACPI_LED_MAX; i++) {
+ struct tp_led_table *t = &led_tables[i];
+ if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp)))
+ mute_led_on_off(t, false);
+ else
+ t->state = -ENODEV;
+ }
+ return 0;
+}
+
+static void mute_led_exit(void)
+{
+ int i;
+
+ for (i = 0; i < TPACPI_LED_MAX; i++)
+ tpacpi_led_set(i, false);
+}
+
+static void mute_led_resume(void)
+{
+ int i;
+
+ for (i = 0; i < TPACPI_LED_MAX; i++) {
+ struct tp_led_table *t = &led_tables[i];
+ if (t->state >= 0)
+ mute_led_on_off(t, t->state);
+ }
+}
+
+static struct ibm_struct mute_led_driver_data = {
+ .name = "mute_led",
+ .exit = mute_led_exit,
+ .resume = mute_led_resume,
+};
+
+/****************************************************************************
+ ****************************************************************************
+ *
+ * Infrastructure
+ *
+ ****************************************************************************
+ ****************************************************************************/
+
+/*
+ * HKEY event callout for other subdrivers go here
+ * (yes, it is ugly, but it is quick, safe, and gets the job done
+ */
+static void tpacpi_driver_event(const unsigned int hkey_event)
+{
+ if (ibm_backlight_device) {
+ switch (hkey_event) {
+ case TP_HKEY_EV_BRGHT_UP:
+ case TP_HKEY_EV_BRGHT_DOWN:
+ tpacpi_brightness_notify_change();
+ }
+ }
+ if (alsa_card) {
+ switch (hkey_event) {
+ case TP_HKEY_EV_VOL_UP:
+ case TP_HKEY_EV_VOL_DOWN:
+ case TP_HKEY_EV_VOL_MUTE:
+ volume_alsa_notify_change();
+ }
+ }
+}
+
+static void hotkey_driver_event(const unsigned int scancode)
+{
+ tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
+}
+
+/* sysfs name ---------------------------------------------------------- */
+static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
+}
+
+static DEVICE_ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
+
+/* --------------------------------------------------------------------- */
+
+/* /proc support */
+static struct proc_dir_entry *proc_dir;
+
+/*
+ * Module and infrastructure proble, init and exit handling
+ */
+
+static bool force_load;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUG
+static const char * __init str_supported(int is_supported)
+{
+ static char text_unsupported[] __initdata = "not supported";
+
+ return (is_supported) ? &text_unsupported[4] : &text_unsupported[0];
+}
+#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
+
+static void ibm_exit(struct ibm_struct *ibm)
+{
+ dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
+
+ list_del_init(&ibm->all_drivers);
+
+ if (ibm->flags.acpi_notify_installed) {
+ dbg_printk(TPACPI_DBG_EXIT,
+ "%s: acpi_remove_notify_handler\n", ibm->name);
+ BUG_ON(!ibm->acpi);
+ acpi_remove_notify_handler(*ibm->acpi->handle,
+ ibm->acpi->type,
+ dispatch_acpi_notify);
+ ibm->flags.acpi_notify_installed = 0;
+ }
+
+ if (ibm->flags.proc_created) {
+ dbg_printk(TPACPI_DBG_EXIT,
+ "%s: remove_proc_entry\n", ibm->name);
+ remove_proc_entry(ibm->name, proc_dir);
+ ibm->flags.proc_created = 0;
+ }
+
+ if (ibm->flags.acpi_driver_registered) {
+ dbg_printk(TPACPI_DBG_EXIT,
+ "%s: acpi_bus_unregister_driver\n", ibm->name);
+ BUG_ON(!ibm->acpi);
+ acpi_bus_unregister_driver(ibm->acpi->driver);
+ kfree(ibm->acpi->driver);
+ ibm->acpi->driver = NULL;
+ ibm->flags.acpi_driver_registered = 0;
+ }
+
+ if (ibm->flags.init_called && ibm->exit) {
+ ibm->exit();
+ ibm->flags.init_called = 0;
+ }
+
+ dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
+}
+
+static int __init ibm_init(struct ibm_init_struct *iibm)
+{
+ int ret;
+ struct ibm_struct *ibm = iibm->data;
+ struct proc_dir_entry *entry;
+
+ BUG_ON(ibm == NULL);
+
+ INIT_LIST_HEAD(&ibm->all_drivers);
+
+ if (ibm->flags.experimental && !experimental)
+ return 0;
+
+ dbg_printk(TPACPI_DBG_INIT,
+ "probing for %s\n", ibm->name);
+
+ if (iibm->init) {
+ ret = iibm->init(iibm);
+ if (ret > 0)
+ return 0; /* probe failed */
+ if (ret)
+ return ret;
+
+ ibm->flags.init_called = 1;
+ }
+
+ if (ibm->acpi) {
+ if (ibm->acpi->hid) {
+ ret = register_tpacpi_subdriver(ibm);
+ if (ret)
+ goto err_out;
+ }
+
+ if (ibm->acpi->notify) {
+ ret = setup_acpi_notify(ibm);
+ if (ret == -ENODEV) {
+ pr_notice("disabling subdriver %s\n",
+ ibm->name);
+ ret = 0;
+ goto err_out;
+ }
+ if (ret < 0)
+ goto err_out;
+ }
+ }
+
+ dbg_printk(TPACPI_DBG_INIT,
+ "%s installed\n", ibm->name);
+
+ if (ibm->read) {
+ umode_t mode = iibm->base_procfs_mode;
+
+ if (!mode)
+ mode = S_IRUGO;
+ if (ibm->write)
+ mode |= S_IWUSR;
+ entry = proc_create_data(ibm->name, mode, proc_dir,
+ &dispatch_proc_fops, ibm);
+ if (!entry) {
+ pr_err("unable to create proc entry %s\n", ibm->name);
+ ret = -ENODEV;
+ goto err_out;
+ }
+ ibm->flags.proc_created = 1;
+ }
+
+ list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
+
+ return 0;
+
+err_out:
+ dbg_printk(TPACPI_DBG_INIT,
+ "%s: at error exit path with result %d\n",
+ ibm->name, ret);
+
+ ibm_exit(ibm);
+ return (ret < 0) ? ret : 0;
+}
+
+/* Probing */
+
+static bool __pure __init tpacpi_is_fw_digit(const char c)
+{
+ return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
+}
+
+static bool __pure __init tpacpi_is_valid_fw_id(const char * const s,
+ const char t)
+{
+ /*
+ * Most models: xxyTkkWW (#.##c)
+ * Ancient 570/600 and -SL lacks (#.##c)
+ */
+ if (s && strlen(s) >= 8 &&
+ tpacpi_is_fw_digit(s[0]) &&
+ tpacpi_is_fw_digit(s[1]) &&
+ s[2] == t &&
+ (s[3] == 'T' || s[3] == 'N') &&
+ tpacpi_is_fw_digit(s[4]) &&
+ tpacpi_is_fw_digit(s[5]))
+ return true;
+
+ /* New models: xxxyTkkW (#.##c); T550 and some others */
+ return s && strlen(s) >= 8 &&
+ tpacpi_is_fw_digit(s[0]) &&
+ tpacpi_is_fw_digit(s[1]) &&
+ tpacpi_is_fw_digit(s[2]) &&
+ s[3] == t &&
+ (s[4] == 'T' || s[4] == 'N') &&
+ tpacpi_is_fw_digit(s[5]) &&
+ tpacpi_is_fw_digit(s[6]);
+}
+
+/* returns 0 - probe ok, or < 0 - probe error.
+ * Probe ok doesn't mean thinkpad found.
+ * On error, kfree() cleanup on tp->* is not performed, caller must do it */
+static int __must_check __init get_thinkpad_model_data(
+ struct thinkpad_id_data *tp)
+{
+ const struct dmi_device *dev = NULL;
+ char ec_fw_string[18];
+ char const *s;
+
+ if (!tp)
+ return -EINVAL;
+
+ memset(tp, 0, sizeof(*tp));
+
+ if (dmi_name_in_vendors("IBM"))
+ tp->vendor = PCI_VENDOR_ID_IBM;
+ else if (dmi_name_in_vendors("LENOVO"))
+ tp->vendor = PCI_VENDOR_ID_LENOVO;
+ else
+ return 0;
+
+ s = dmi_get_system_info(DMI_BIOS_VERSION);
+ tp->bios_version_str = kstrdup(s, GFP_KERNEL);
+ if (s && !tp->bios_version_str)
+ return -ENOMEM;
+
+ /* Really ancient ThinkPad 240X will fail this, which is fine */
+ if (!(tpacpi_is_valid_fw_id(tp->bios_version_str, 'E') ||
+ tpacpi_is_valid_fw_id(tp->bios_version_str, 'C')))
+ return 0;
+
+ tp->bios_model = tp->bios_version_str[0]
+ | (tp->bios_version_str[1] << 8);
+ tp->bios_release = (tp->bios_version_str[4] << 8)
+ | tp->bios_version_str[5];
+
+ /*
+ * ThinkPad T23 or newer, A31 or newer, R50e or newer,
+ * X32 or newer, all Z series; Some models must have an
+ * up-to-date BIOS or they will not be detected.
+ *
+ * See http://thinkwiki.org/wiki/List_of_DMI_IDs
+ */
+ while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
+ if (sscanf(dev->name,
+ "IBM ThinkPad Embedded Controller -[%17c",
+ ec_fw_string) == 1) {
+ ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
+ ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
+
+ tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
+ if (!tp->ec_version_str)
+ return -ENOMEM;
+
+ if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
+ tp->ec_model = ec_fw_string[0]
+ | (ec_fw_string[1] << 8);
+ tp->ec_release = (ec_fw_string[4] << 8)
+ | ec_fw_string[5];
+ } else {
+ pr_notice("ThinkPad firmware release %s "
+ "doesn't match the known patterns\n",
+ ec_fw_string);
+ pr_notice("please report this to %s\n",
+ TPACPI_MAIL);
+ }
+ break;
+ }
+ }
+
+ s = dmi_get_system_info(DMI_PRODUCT_VERSION);
+ if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) {
+ tp->model_str = kstrdup(s, GFP_KERNEL);
+ if (!tp->model_str)
+ return -ENOMEM;
+ } else {
+ s = dmi_get_system_info(DMI_BIOS_VENDOR);
+ if (s && !(strncasecmp(s, "Lenovo", 6))) {
+ tp->model_str = kstrdup(s, GFP_KERNEL);
+ if (!tp->model_str)
+ return -ENOMEM;
+ }
+ }
+
+ s = dmi_get_system_info(DMI_PRODUCT_NAME);
+ tp->nummodel_str = kstrdup(s, GFP_KERNEL);
+ if (s && !tp->nummodel_str)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int __init probe_for_thinkpad(void)
+{
+ int is_thinkpad;
+
+ if (acpi_disabled)
+ return -ENODEV;
+
+ /* It would be dangerous to run the driver in this case */
+ if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
+ return -ENODEV;
+
+ /*
+ * Non-ancient models have better DMI tagging, but very old models
+ * don't. tpacpi_is_fw_known() is a cheat to help in that case.
+ */
+ is_thinkpad = (thinkpad_id.model_str != NULL) ||
+ (thinkpad_id.ec_model != 0) ||
+ tpacpi_is_fw_known();
+
+ /* The EC handler is required */
+ tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
+ if (!ec_handle) {
+ if (is_thinkpad)
+ pr_err("Not yet supported ThinkPad detected!\n");
+ return -ENODEV;
+ }
+
+ if (!is_thinkpad && !force_load)
+ return -ENODEV;
+
+ return 0;
+}
+
+static void __init thinkpad_acpi_init_banner(void)
+{
+ pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
+ pr_info("%s\n", TPACPI_URL);
+
+ pr_info("ThinkPad BIOS %s, EC %s\n",
+ (thinkpad_id.bios_version_str) ?
+ thinkpad_id.bios_version_str : "unknown",
+ (thinkpad_id.ec_version_str) ?
+ thinkpad_id.ec_version_str : "unknown");
+
+ BUG_ON(!thinkpad_id.vendor);
+
+ if (thinkpad_id.model_str)
+ pr_info("%s %s, model %s\n",
+ (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
+ "IBM" : ((thinkpad_id.vendor ==
+ PCI_VENDOR_ID_LENOVO) ?
+ "Lenovo" : "Unknown vendor"),
+ thinkpad_id.model_str,
+ (thinkpad_id.nummodel_str) ?
+ thinkpad_id.nummodel_str : "unknown");
+}
+
+/* Module init, exit, parameters */
+
+static struct ibm_init_struct ibms_init[] __initdata = {
+ {
+ .data = &thinkpad_acpi_driver_data,
+ },
+ {
+ .init = hotkey_init,
+ .data = &hotkey_driver_data,
+ },
+ {
+ .init = bluetooth_init,
+ .data = &bluetooth_driver_data,
+ },
+ {
+ .init = wan_init,
+ .data = &wan_driver_data,
+ },
+ {
+ .init = uwb_init,
+ .data = &uwb_driver_data,
+ },
+#ifdef CONFIG_THINKPAD_ACPI_VIDEO
+ {
+ .init = video_init,
+ .base_procfs_mode = S_IRUSR,
+ .data = &video_driver_data,
+ },
+#endif
+ {
+ .init = light_init,
+ .data = &light_driver_data,
+ },
+ {
+ .init = cmos_init,
+ .data = &cmos_driver_data,
+ },
+ {
+ .init = led_init,
+ .data = &led_driver_data,
+ },
+ {
+ .init = beep_init,
+ .data = &beep_driver_data,
+ },
+ {
+ .init = thermal_init,
+ .data = &thermal_driver_data,
+ },
+ {
+ .init = brightness_init,
+ .data = &brightness_driver_data,
+ },
+ {
+ .init = volume_init,
+ .data = &volume_driver_data,
+ },
+ {
+ .init = fan_init,
+ .data = &fan_driver_data,
+ },
+ {
+ .init = mute_led_init,
+ .data = &mute_led_driver_data,
+ },
+};
+
+static int __init set_ibm_param(const char *val, struct kernel_param *kp)
+{
+ unsigned int i;
+ struct ibm_struct *ibm;
+
+ if (!kp || !kp->name || !val)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
+ ibm = ibms_init[i].data;
+ WARN_ON(ibm == NULL);
+
+ if (!ibm || !ibm->name)
+ continue;
+
+ if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
+ if (strlen(val) > sizeof(ibms_init[i].param) - 2)
+ return -ENOSPC;
+ strcpy(ibms_init[i].param, val);
+ strcat(ibms_init[i].param, ",");
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
+module_param(experimental, int, 0444);
+MODULE_PARM_DESC(experimental,
+ "Enables experimental features when non-zero");
+
+module_param_named(debug, dbg_level, uint, 0);
+MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
+
+module_param(force_load, bool, 0444);
+MODULE_PARM_DESC(force_load,
+ "Attempts to load the driver even on a "
+ "mis-identified ThinkPad when true");
+
+module_param_named(fan_control, fan_control_allowed, bool, 0444);
+MODULE_PARM_DESC(fan_control,
+ "Enables setting fan parameters features when true");
+
+module_param_named(brightness_mode, brightness_mode, uint, 0444);
+MODULE_PARM_DESC(brightness_mode,
+ "Selects brightness control strategy: "
+ "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
+
+module_param(brightness_enable, uint, 0444);
+MODULE_PARM_DESC(brightness_enable,
+ "Enables backlight control when 1, disables when 0");
+
+#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
+module_param_named(volume_mode, volume_mode, uint, 0444);
+MODULE_PARM_DESC(volume_mode,
+ "Selects volume control strategy: "
+ "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
+
+module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
+MODULE_PARM_DESC(volume_capabilities,
+ "Selects the mixer capabilites: "
+ "0=auto, 1=volume and mute, 2=mute only");
+
+module_param_named(volume_control, volume_control_allowed, bool, 0444);
+MODULE_PARM_DESC(volume_control,
+ "Enables software override for the console audio "
+ "control when true");
+
+module_param_named(software_mute, software_mute_requested, bool, 0444);
+MODULE_PARM_DESC(software_mute,
+ "Request full software mute control");
+
+/* ALSA module API parameters */
+module_param_named(index, alsa_index, int, 0444);
+MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
+module_param_named(id, alsa_id, charp, 0444);
+MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
+module_param_named(enable, alsa_enable, bool, 0444);
+MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
+#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
+
+#define TPACPI_PARAM(feature) \
+ module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
+ MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
+ "at module load, see documentation")
+
+TPACPI_PARAM(hotkey);
+TPACPI_PARAM(bluetooth);
+TPACPI_PARAM(video);
+TPACPI_PARAM(light);
+TPACPI_PARAM(cmos);
+TPACPI_PARAM(led);
+TPACPI_PARAM(beep);
+TPACPI_PARAM(brightness);
+TPACPI_PARAM(volume);
+TPACPI_PARAM(fan);
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+module_param(dbg_wlswemul, uint, 0444);
+MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
+module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
+MODULE_PARM_DESC(wlsw_state,
+ "Initial state of the emulated WLSW switch");
+
+module_param(dbg_bluetoothemul, uint, 0444);
+MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
+module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
+MODULE_PARM_DESC(bluetooth_state,
+ "Initial state of the emulated bluetooth switch");
+
+module_param(dbg_wwanemul, uint, 0444);
+MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
+module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
+MODULE_PARM_DESC(wwan_state,
+ "Initial state of the emulated WWAN switch");
+
+module_param(dbg_uwbemul, uint, 0444);
+MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
+module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
+MODULE_PARM_DESC(uwb_state,
+ "Initial state of the emulated UWB switch");
+#endif
+
+static void thinkpad_acpi_module_exit(void)
+{
+ struct ibm_struct *ibm, *itmp;
+
+ tpacpi_lifecycle = TPACPI_LIFE_EXITING;
+
+ list_for_each_entry_safe_reverse(ibm, itmp,
+ &tpacpi_all_drivers,
+ all_drivers) {
+ ibm_exit(ibm);
+ }
+
+ dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
+
+ if (tpacpi_inputdev) {
+ if (tp_features.input_device_registered)
+ input_unregister_device(tpacpi_inputdev);
+ else
+ input_free_device(tpacpi_inputdev);
+ kfree(hotkey_keycode_map);
+ }
+
+ if (tpacpi_hwmon)
+ hwmon_device_unregister(tpacpi_hwmon);
+
+ if (tp_features.sensors_pdev_attrs_registered)
+ device_remove_file(&tpacpi_sensors_pdev->dev, &dev_attr_name);
+ if (tpacpi_sensors_pdev)
+ platform_device_unregister(tpacpi_sensors_pdev);
+ if (tpacpi_pdev)
+ platform_device_unregister(tpacpi_pdev);
+
+ if (tp_features.sensors_pdrv_attrs_registered)
+ tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
+ if (tp_features.platform_drv_attrs_registered)
+ tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
+
+ if (tp_features.sensors_pdrv_registered)
+ platform_driver_unregister(&tpacpi_hwmon_pdriver);
+
+ if (tp_features.platform_drv_registered)
+ platform_driver_unregister(&tpacpi_pdriver);
+
+ if (proc_dir)
+ remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
+
+ if (tpacpi_wq)
+ destroy_workqueue(tpacpi_wq);
+
+ kfree(thinkpad_id.bios_version_str);
+ kfree(thinkpad_id.ec_version_str);
+ kfree(thinkpad_id.model_str);
+ kfree(thinkpad_id.nummodel_str);
+}
+
+
+static int __init thinkpad_acpi_module_init(void)
+{
+ int ret, i;
+
+ tpacpi_lifecycle = TPACPI_LIFE_INIT;
+
+ /* Driver-level probe */
+
+ ret = get_thinkpad_model_data(&thinkpad_id);
+ if (ret) {
+ pr_err("unable to get DMI data: %d\n", ret);
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+ ret = probe_for_thinkpad();
+ if (ret) {
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+
+ /* Driver initialization */
+
+ thinkpad_acpi_init_banner();
+ tpacpi_check_outdated_fw();
+
+ TPACPI_ACPIHANDLE_INIT(ecrd);
+ TPACPI_ACPIHANDLE_INIT(ecwr);
+
+ tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
+ if (!tpacpi_wq) {
+ thinkpad_acpi_module_exit();
+ return -ENOMEM;
+ }
+
+ proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
+ if (!proc_dir) {
+ pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
+ thinkpad_acpi_module_exit();
+ return -ENODEV;
+ }
+
+ ret = platform_driver_register(&tpacpi_pdriver);
+ if (ret) {
+ pr_err("unable to register main platform driver\n");
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+ tp_features.platform_drv_registered = 1;
+
+ ret = platform_driver_register(&tpacpi_hwmon_pdriver);
+ if (ret) {
+ pr_err("unable to register hwmon platform driver\n");
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+ tp_features.sensors_pdrv_registered = 1;
+
+ ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
+ if (!ret) {
+ tp_features.platform_drv_attrs_registered = 1;
+ ret = tpacpi_create_driver_attributes(
+ &tpacpi_hwmon_pdriver.driver);
+ }
+ if (ret) {
+ pr_err("unable to create sysfs driver attributes\n");
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+ tp_features.sensors_pdrv_attrs_registered = 1;
+
+
+ /* Device initialization */
+ tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
+ NULL, 0);
+ if (IS_ERR(tpacpi_pdev)) {
+ ret = PTR_ERR(tpacpi_pdev);
+ tpacpi_pdev = NULL;
+ pr_err("unable to register platform device\n");
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+ tpacpi_sensors_pdev = platform_device_register_simple(
+ TPACPI_HWMON_DRVR_NAME,
+ -1, NULL, 0);
+ if (IS_ERR(tpacpi_sensors_pdev)) {
+ ret = PTR_ERR(tpacpi_sensors_pdev);
+ tpacpi_sensors_pdev = NULL;
+ pr_err("unable to register hwmon platform device\n");
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+ ret = device_create_file(&tpacpi_sensors_pdev->dev, &dev_attr_name);
+ if (ret) {
+ pr_err("unable to create sysfs hwmon device attributes\n");
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+ tp_features.sensors_pdev_attrs_registered = 1;
+ tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
+ if (IS_ERR(tpacpi_hwmon)) {
+ ret = PTR_ERR(tpacpi_hwmon);
+ tpacpi_hwmon = NULL;
+ pr_err("unable to register hwmon device\n");
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+ mutex_init(&tpacpi_inputdev_send_mutex);
+ tpacpi_inputdev = input_allocate_device();
+ if (!tpacpi_inputdev) {
+ thinkpad_acpi_module_exit();
+ return -ENOMEM;
+ } else {
+ /* Prepare input device, but don't register */
+ tpacpi_inputdev->name = "ThinkPad Extra Buttons";
+ tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
+ tpacpi_inputdev->id.bustype = BUS_HOST;
+ tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
+ tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
+ tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
+ tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
+ }
+
+ /* Init subdriver dependencies */
+ tpacpi_detect_brightness_capabilities();
+
+ /* Init subdrivers */
+ for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
+ ret = ibm_init(&ibms_init[i]);
+ if (ret >= 0 && *ibms_init[i].param)
+ ret = ibms_init[i].data->write(ibms_init[i].param);
+ if (ret < 0) {
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+ }
+
+ tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
+
+ ret = input_register_device(tpacpi_inputdev);
+ if (ret < 0) {
+ pr_err("unable to register input device\n");
+ thinkpad_acpi_module_exit();
+ return ret;
+ } else {
+ tp_features.input_device_registered = 1;
+ }
+
+ return 0;
+}
+
+MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
+
+/*
+ * This will autoload the driver in almost every ThinkPad
+ * in widespread use.
+ *
+ * Only _VERY_ old models, like the 240, 240x and 570 lack
+ * the HKEY event interface.
+ */
+MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
+
+/*
+ * DMI matching for module autoloading
+ *
+ * See http://thinkwiki.org/wiki/List_of_DMI_IDs
+ * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
+ *
+ * Only models listed in thinkwiki will be supported, so add yours
+ * if it is not there yet.
+ */
+#define IBM_BIOS_MODULE_ALIAS(__type) \
+ MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
+
+/* Ancient thinkpad BIOSes have to be identified by
+ * BIOS type or model number, and there are far less
+ * BIOS types than model numbers... */
+IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
+
+MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
+MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
+MODULE_DESCRIPTION(TPACPI_DESC);
+MODULE_VERSION(TPACPI_VERSION);
+MODULE_LICENSE("GPL");
+
+module_init(thinkpad_acpi_module_init);
+module_exit(thinkpad_acpi_module_exit);
diff --git a/drivers/platform/x86/thinkpad_ec.c b/drivers/platform/x86/thinkpad_ec.c
new file mode 100644
index 000000000..ca34fed2d
--- /dev/null
+++ b/drivers/platform/x86/thinkpad_ec.c
@@ -0,0 +1,513 @@
+/*
+ * thinkpad_ec.c - ThinkPad embedded controller LPC3 functions
+ *
+ * The embedded controller on ThinkPad laptops has a non-standard interface,
+ * where LPC channel 3 of the H8S EC chip is hooked up to IO ports
+ * 0x1600-0x161F and implements (a special case of) the H8S LPC protocol.
+ * The EC LPC interface provides various system management services (currently
+ * known: battery information and accelerometer readouts). This driver
+ * provides access and mutual exclusion for the EC interface.
+*
+ * The LPC protocol and terminology are documented here:
+ * "H8S/2104B Group Hardware Manual",
+ * http://documentation.renesas.com/eng/products/mpumcu/rej09b0300_2140bhm.pdf
+ *
+ * Copyright (C) 2006-2007 Shem Multinymous <multinymous@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/dmi.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/thinkpad_ec.h>
+#include <linux/jiffies.h>
+#include <asm/io.h>
+
+#include <linux/version.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)
+ #include <asm/semaphore.h>
+#else
+ #include <linux/semaphore.h>
+#endif
+
+#define TP_VERSION "0.41"
+
+MODULE_AUTHOR("Shem Multinymous");
+MODULE_DESCRIPTION("ThinkPad embedded controller hardware access");
+MODULE_VERSION(TP_VERSION);
+MODULE_LICENSE("GPL");
+
+/* IO ports used by embedded controller LPC channel 3: */
+#define TPC_BASE_PORT 0x1600
+#define TPC_NUM_PORTS 0x20
+#define TPC_STR3_PORT 0x1604 /* Reads H8S EC register STR3 */
+#define TPC_TWR0_PORT 0x1610 /* Mapped to H8S EC register TWR0MW/SW */
+#define TPC_TWR15_PORT 0x161F /* Mapped to H8S EC register TWR15. */
+ /* (and port TPC_TWR0_PORT+i is mapped to H8S reg TWRi for 0<i<16) */
+
+/* H8S STR3 status flags (see "H8S/2104B Group Hardware Manual" p.549) */
+#define H8S_STR3_IBF3B 0x80 /* Bidi. Data Register Input Buffer Full */
+#define H8S_STR3_OBF3B 0x40 /* Bidi. Data Register Output Buffer Full */
+#define H8S_STR3_MWMF 0x20 /* Master Write Mode Flag */
+#define H8S_STR3_SWMF 0x10 /* Slave Write Mode Flag */
+#define H8S_STR3_MASK 0xF0 /* All bits we care about in STR3 */
+
+/* Timeouts and retries */
+#define TPC_READ_RETRIES 150
+#define TPC_READ_NDELAY 500
+#define TPC_REQUEST_RETRIES 1000
+#define TPC_REQUEST_NDELAY 10
+#define TPC_PREFETCH_TIMEOUT (HZ/10) /* invalidate prefetch after 0.1sec */
+
+/* A few macros for printk()ing: */
+#define MSG_FMT(fmt, args...) \
+ "thinkpad_ec: %s: " fmt "\n", __func__, ## args
+#define REQ_FMT(msg, code) \
+ MSG_FMT("%s: (0x%02x:0x%02x)->0x%02x", \
+ msg, args->val[0x0], args->val[0xF], code)
+
+/* State of request prefetching: */
+static u8 prefetch_arg0, prefetch_argF; /* Args of last prefetch */
+static u64 prefetch_jiffies; /* time of prefetch, or: */
+#define TPC_PREFETCH_NONE INITIAL_JIFFIES /* No prefetch */
+#define TPC_PREFETCH_JUNK (INITIAL_JIFFIES+1) /* Ignore prefetch */
+
+/* Locking: */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
+static DECLARE_MUTEX(thinkpad_ec_mutex);
+#else
+static DEFINE_SEMAPHORE(thinkpad_ec_mutex);
+#endif
+
+/* Kludge in case the ACPI DSDT reserves the ports we need. */
+static bool force_io; /* Willing to do IO to ports we couldn't reserve? */
+static int reserved_io; /* Successfully reserved the ports? */
+module_param_named(force_io, force_io, bool, 0600);
+MODULE_PARM_DESC(force_io, "Force IO even if region already reserved (0=off, 1=on)");
+
+/**
+ * thinkpad_ec_lock - get lock on the ThinkPad EC
+ *
+ * Get exclusive lock for accesing the ThinkPad embedded controller LPC3
+ * interface. Returns 0 iff lock acquired.
+ */
+int thinkpad_ec_lock(void)
+{
+ int ret;
+ ret = down_interruptible(&thinkpad_ec_mutex);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_lock);
+
+/**
+ * thinkpad_ec_try_lock - try getting lock on the ThinkPad EC
+ *
+ * Try getting an exclusive lock for accesing the ThinkPad embedded
+ * controller LPC3. Returns immediately if lock is not available; neither
+ * blocks nor sleeps. Returns 0 iff lock acquired .
+ */
+int thinkpad_ec_try_lock(void)
+{
+ return down_trylock(&thinkpad_ec_mutex);
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_try_lock);
+
+/**
+ * thinkpad_ec_unlock - release lock on ThinkPad EC
+ *
+ * Release a previously acquired exclusive lock on the ThinkPad ebmedded
+ * controller LPC3 interface.
+ */
+void thinkpad_ec_unlock(void)
+{
+ up(&thinkpad_ec_mutex);
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_unlock);
+
+/**
+ * thinkpad_ec_request_row - tell embedded controller to prepare a row
+ * @args Input register arguments
+ *
+ * Requests a data row by writing to H8S LPC registers TRW0 through TWR15 (or
+ * a subset thereof) following the protocol prescribed by the "H8S/2104B Group
+ * Hardware Manual". Does sanity checks via status register STR3.
+ */
+static int thinkpad_ec_request_row(const struct thinkpad_ec_row *args)
+{
+ u8 str3;
+ int i;
+
+ /* EC protocol requires write to TWR0 (function code): */
+ if (!(args->mask & 0x0001)) {
+ printk(KERN_ERR MSG_FMT("bad args->mask=0x%02x", args->mask));
+ return -EINVAL;
+ }
+
+ /* Check initial STR3 status: */
+ str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK;
+ if (str3 & H8S_STR3_OBF3B) { /* data already pending */
+ inb(TPC_TWR15_PORT); /* marks end of previous transaction */
+ if (prefetch_jiffies == TPC_PREFETCH_NONE)
+ printk(KERN_WARNING REQ_FMT(
+ "EC has result from unrequested transaction",
+ str3));
+ return -EBUSY; /* EC will be ready in a few usecs */
+ } else if (str3 == H8S_STR3_SWMF) { /* busy with previous request */
+ if (prefetch_jiffies == TPC_PREFETCH_NONE)
+ printk(KERN_WARNING REQ_FMT(
+ "EC is busy with unrequested transaction",
+ str3));
+ return -EBUSY; /* data will be pending in a few usecs */
+ } else if (str3 != 0x00) { /* unexpected status? */
+ printk(KERN_WARNING REQ_FMT("unexpected initial STR3", str3));
+ return -EIO;
+ }
+
+ /* Send TWR0MW: */
+ outb(args->val[0], TPC_TWR0_PORT);
+ str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK;
+ if (str3 != H8S_STR3_MWMF) { /* not accepted? */
+ printk(KERN_WARNING REQ_FMT("arg0 rejected", str3));
+ return -EIO;
+ }
+
+ /* Send TWR1 through TWR14: */
+ for (i = 1; i < TP_CONTROLLER_ROW_LEN-1; i++)
+ if ((args->mask>>i)&1)
+ outb(args->val[i], TPC_TWR0_PORT+i);
+
+ /* Send TWR15 (default to 0x01). This marks end of command. */
+ outb((args->mask & 0x8000) ? args->val[0xF] : 0x01, TPC_TWR15_PORT);
+
+ /* Wait until EC starts writing its reply (~60ns on average).
+ * Releasing locks before this happens may cause an EC hang
+ * due to firmware bug!
+ */
+ for (i = 0; i < TPC_REQUEST_RETRIES; i++) {
+ str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK;
+ if (str3 & H8S_STR3_SWMF) /* EC started replying */
+ return 0;
+ else if (!(str3 & ~(H8S_STR3_IBF3B|H8S_STR3_MWMF)))
+ /* Normal progress (the EC hasn't seen the request
+ * yet, or is processing it). Wait it out. */
+ ndelay(TPC_REQUEST_NDELAY);
+ else { /* weird EC status */
+ printk(KERN_WARNING
+ REQ_FMT("bad end STR3", str3));
+ return -EIO;
+ }
+ }
+ printk(KERN_WARNING REQ_FMT("EC is mysteriously silent", str3));
+ return -EIO;
+}
+
+/**
+ * thinkpad_ec_read_data - read pre-requested row-data from EC
+ * @args Input register arguments of pre-requested rows
+ * @data Output register values
+ *
+ * Reads current row data from the controller, assuming it's already
+ * requested. Follows the H8S spec for register access and status checks.
+ */
+static int thinkpad_ec_read_data(const struct thinkpad_ec_row *args,
+ struct thinkpad_ec_row *data)
+{
+ int i;
+ u8 str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK;
+ /* Once we make a request, STR3 assumes the sequence of values listed
+ * in the following 'if' as it reads the request and writes its data.
+ * It takes about a few dozen nanosecs total, with very high variance.
+ */
+ if (str3 == (H8S_STR3_IBF3B|H8S_STR3_MWMF) ||
+ str3 == 0x00 || /* the 0x00 is indistinguishable from idle EC! */
+ str3 == H8S_STR3_SWMF)
+ return -EBUSY; /* not ready yet */
+ /* Finally, the EC signals output buffer full: */
+ if (str3 != (H8S_STR3_OBF3B|H8S_STR3_SWMF)) {
+ printk(KERN_WARNING
+ REQ_FMT("bad initial STR3", str3));
+ return -EIO;
+ }
+
+ /* Read first byte (signals start of read transactions): */
+ data->val[0] = inb(TPC_TWR0_PORT);
+ /* Optionally read 14 more bytes: */
+ for (i = 1; i < TP_CONTROLLER_ROW_LEN-1; i++)
+ if ((data->mask >> i)&1)
+ data->val[i] = inb(TPC_TWR0_PORT+i);
+ /* Read last byte from 0x161F (signals end of read transaction): */
+ data->val[0xF] = inb(TPC_TWR15_PORT);
+
+ /* Readout still pending? */
+ str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK;
+ if (str3 & H8S_STR3_OBF3B)
+ printk(KERN_WARNING
+ REQ_FMT("OBF3B=1 after read", str3));
+ /* If port 0x161F returns 0x80 too often, the EC may lock up. Warn: */
+ if (data->val[0xF] == 0x80)
+ printk(KERN_WARNING
+ REQ_FMT("0x161F reports error", data->val[0xF]));
+ return 0;
+}
+
+/**
+ * thinkpad_ec_is_row_fetched - is the given row currently prefetched?
+ *
+ * To keep things simple we compare only the first and last args;
+ * this suffices for all known cases.
+ */
+static int thinkpad_ec_is_row_fetched(const struct thinkpad_ec_row *args)
+{
+ return (prefetch_jiffies != TPC_PREFETCH_NONE) &&
+ (prefetch_jiffies != TPC_PREFETCH_JUNK) &&
+ (prefetch_arg0 == args->val[0]) &&
+ (prefetch_argF == args->val[0xF]) &&
+ (get_jiffies_64() < prefetch_jiffies + TPC_PREFETCH_TIMEOUT);
+}
+
+/**
+ * thinkpad_ec_read_row - request and read data from ThinkPad EC
+ * @args Input register arguments
+ * @data Output register values
+ *
+ * Read a data row from the ThinkPad embedded controller LPC3 interface.
+ * Does fetching and retrying if needed. The row is specified by an
+ * array of 16 bytes, some of which may be undefined (but the first is
+ * mandatory). These bytes are given in @args->val[], where @args->val[i] is
+ * used iff (@args->mask>>i)&1). The resulting row data is stored in
+ * @data->val[], but is only guaranteed to be valid for indices corresponding
+ * to set bit in @data->mask. That is, if @data->mask&(1<<i)==0 then
+ * @data->val[i] is undefined.
+ *
+ * Returns -EBUSY on transient error and -EIO on abnormal condition.
+ * Caller must hold controller lock.
+ */
+int thinkpad_ec_read_row(const struct thinkpad_ec_row *args,
+ struct thinkpad_ec_row *data)
+{
+ int retries, ret;
+
+ if (thinkpad_ec_is_row_fetched(args))
+ goto read_row; /* already requested */
+
+ /* Request the row */
+ for (retries = 0; retries < TPC_READ_RETRIES; ++retries) {
+ ret = thinkpad_ec_request_row(args);
+ if (!ret)
+ goto read_row;
+ if (ret != -EBUSY)
+ break;
+ ndelay(TPC_READ_NDELAY);
+ }
+ printk(KERN_ERR REQ_FMT("failed requesting row", ret));
+ goto out;
+
+read_row:
+ /* Read the row's data */
+ for (retries = 0; retries < TPC_READ_RETRIES; ++retries) {
+ ret = thinkpad_ec_read_data(args, data);
+ if (!ret)
+ goto out;
+ if (ret != -EBUSY)
+ break;
+ ndelay(TPC_READ_NDELAY);
+ }
+
+ printk(KERN_ERR REQ_FMT("failed waiting for data", ret));
+
+out:
+ prefetch_jiffies = TPC_PREFETCH_JUNK;
+ return ret;
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_read_row);
+
+/**
+ * thinkpad_ec_try_read_row - try reading prefetched data from ThinkPad EC
+ * @args Input register arguments
+ * @data Output register values
+ *
+ * Try reading a data row from the ThinkPad embedded controller LPC3
+ * interface, if this raw was recently prefetched using
+ * thinkpad_ec_prefetch_row(). Does not fetch, retry or block.
+ * The parameters have the same meaning as in thinkpad_ec_read_row().
+ *
+ * Returns -EBUSY is data not ready and -ENODATA if row not prefetched.
+ * Caller must hold controller lock.
+ */
+int thinkpad_ec_try_read_row(const struct thinkpad_ec_row *args,
+ struct thinkpad_ec_row *data)
+{
+ int ret;
+ if (!thinkpad_ec_is_row_fetched(args)) {
+ ret = -ENODATA;
+ } else {
+ ret = thinkpad_ec_read_data(args, data);
+ if (!ret)
+ prefetch_jiffies = TPC_PREFETCH_NONE; /* eaten up */
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_try_read_row);
+
+/**
+ * thinkpad_ec_prefetch_row - prefetch data from ThinkPad EC
+ * @args Input register arguments
+ *
+ * Prefetch a data row from the ThinkPad embedded controller LCP3
+ * interface. A subsequent call to thinkpad_ec_read_row() with the
+ * same arguments will be faster, and a subsequent call to
+ * thinkpad_ec_try_read_row() stands a good chance of succeeding if
+ * done neither too soon nor too late. See
+ * thinkpad_ec_read_row() for the meaning of @args.
+ *
+ * Returns -EBUSY on transient error and -EIO on abnormal condition.
+ * Caller must hold controller lock.
+ */
+int thinkpad_ec_prefetch_row(const struct thinkpad_ec_row *args)
+{
+ int ret;
+ ret = thinkpad_ec_request_row(args);
+ if (ret) {
+ prefetch_jiffies = TPC_PREFETCH_JUNK;
+ } else {
+ prefetch_jiffies = get_jiffies_64();
+ prefetch_arg0 = args->val[0x0];
+ prefetch_argF = args->val[0xF];
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_prefetch_row);
+
+/**
+ * thinkpad_ec_invalidate - invalidate prefetched ThinkPad EC data
+ *
+ * Invalidate the data prefetched via thinkpad_ec_prefetch_row() from the
+ * ThinkPad embedded controller LPC3 interface.
+ * Must be called before unlocking by any code that accesses the controller
+ * ports directly.
+ */
+void thinkpad_ec_invalidate(void)
+{
+ prefetch_jiffies = TPC_PREFETCH_JUNK;
+}
+EXPORT_SYMBOL_GPL(thinkpad_ec_invalidate);
+
+
+/*** Checking for EC hardware ***/
+
+/**
+ * thinkpad_ec_test - verify the EC is present and follows protocol
+ *
+ * Ensure the EC LPC3 channel really works on this machine by making
+ * an EC request and seeing if the EC follows the documented H8S protocol.
+ * The requested row just reads battery status, so it should be harmless to
+ * access it (on a correct EC).
+ * This test writes to IO ports, so execute only after checking DMI.
+ */
+static int __init thinkpad_ec_test(void)
+{
+ int ret;
+ const struct thinkpad_ec_row args = /* battery 0 basic status */
+ { .mask = 0x8001, .val = {0x01,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0x00} };
+ struct thinkpad_ec_row data = { .mask = 0x0000 };
+ ret = thinkpad_ec_lock();
+ if (ret)
+ return ret;
+ ret = thinkpad_ec_read_row(&args, &data);
+ thinkpad_ec_unlock();
+ return ret;
+}
+
+/* Search all DMI device names of a given type for a substring */
+static int __init dmi_find_substring(int type, const char *substr)
+{
+ const struct dmi_device *dev = NULL;
+ while ((dev = dmi_find_device(type, NULL, dev))) {
+ if (strstr(dev->name, substr))
+ return 1;
+ }
+ return 0;
+}
+
+#define TP_DMI_MATCH(vendor,model) { \
+ .ident = vendor " " model, \
+ .matches = { \
+ DMI_MATCH(DMI_BOARD_VENDOR, vendor), \
+ DMI_MATCH(DMI_PRODUCT_VERSION, model) \
+ } \
+}
+
+/* Check DMI for existence of ThinkPad embedded controller */
+static int __init check_dmi_for_ec(void)
+{
+ /* A few old models that have a good EC but don't report it in DMI */
+ struct dmi_system_id tp_whitelist[] = {
+ TP_DMI_MATCH("IBM", "ThinkPad A30"),
+ TP_DMI_MATCH("IBM", "ThinkPad T23"),
+ TP_DMI_MATCH("IBM", "ThinkPad X24"),
+ TP_DMI_MATCH("LENOVO", "ThinkPad"),
+ { .ident = NULL }
+ };
+ return dmi_find_substring(DMI_DEV_TYPE_OEM_STRING,
+ "IBM ThinkPad Embedded Controller") ||
+ dmi_check_system(tp_whitelist);
+}
+
+/*** Init and cleanup ***/
+
+static int __init thinkpad_ec_init(void)
+{
+ if (!check_dmi_for_ec()) {
+ printk(KERN_WARNING
+ "thinkpad_ec: no ThinkPad embedded controller!\n");
+ return -ENODEV;
+ }
+
+ if (request_region(TPC_BASE_PORT, TPC_NUM_PORTS, "thinkpad_ec")) {
+ reserved_io = 1;
+ } else {
+ printk(KERN_ERR "thinkpad_ec: cannot claim IO ports %#x-%#x... ",
+ TPC_BASE_PORT,
+ TPC_BASE_PORT + TPC_NUM_PORTS - 1);
+ if (force_io) {
+ printk("forcing use of unreserved IO ports.\n");
+ } else {
+ printk("consider using force_io=1.\n");
+ return -ENXIO;
+ }
+ }
+ prefetch_jiffies = TPC_PREFETCH_JUNK;
+ if (thinkpad_ec_test()) {
+ printk(KERN_ERR "thinkpad_ec: initial ec test failed\n");
+ if (reserved_io)
+ release_region(TPC_BASE_PORT, TPC_NUM_PORTS);
+ return -ENXIO;
+ }
+ printk(KERN_INFO "thinkpad_ec: thinkpad_ec " TP_VERSION " loaded.\n");
+ return 0;
+}
+
+static void __exit thinkpad_ec_exit(void)
+{
+ if (reserved_io)
+ release_region(TPC_BASE_PORT, TPC_NUM_PORTS);
+ printk(KERN_INFO "thinkpad_ec: unloaded.\n");
+}
+
+module_init(thinkpad_ec_init);
+module_exit(thinkpad_ec_exit);
diff --git a/drivers/platform/x86/topstar-laptop.c b/drivers/platform/x86/topstar-laptop.c
new file mode 100644
index 000000000..e597de05e
--- /dev/null
+++ b/drivers/platform/x86/topstar-laptop.c
@@ -0,0 +1,187 @@
+/*
+ * ACPI driver for Topstar notebooks (hotkeys support only)
+ *
+ * Copyright (c) 2009 Herton Ronaldo Krzesinski <herton@mandriva.com.br>
+ *
+ * Implementation inspired by existing x86 platform drivers, in special
+ * asus/eepc/fujitsu-laptop, thanks to their authors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/acpi.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+
+#define ACPI_TOPSTAR_CLASS "topstar"
+
+struct topstar_hkey {
+ struct input_dev *inputdev;
+};
+
+static const struct key_entry topstar_keymap[] = {
+ { KE_KEY, 0x80, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, 0x81, { KEY_BRIGHTNESSDOWN } },
+ { KE_KEY, 0x83, { KEY_VOLUMEUP } },
+ { KE_KEY, 0x84, { KEY_VOLUMEDOWN } },
+ { KE_KEY, 0x85, { KEY_MUTE } },
+ { KE_KEY, 0x86, { KEY_SWITCHVIDEOMODE } },
+ { KE_KEY, 0x87, { KEY_F13 } }, /* touchpad enable/disable key */
+ { KE_KEY, 0x88, { KEY_WLAN } },
+ { KE_KEY, 0x8a, { KEY_WWW } },
+ { KE_KEY, 0x8b, { KEY_MAIL } },
+ { KE_KEY, 0x8c, { KEY_MEDIA } },
+
+ /* Known non hotkey events don't handled or that we don't care yet */
+ { KE_IGNORE, 0x82, }, /* backlight event */
+ { KE_IGNORE, 0x8e, },
+ { KE_IGNORE, 0x8f, },
+ { KE_IGNORE, 0x90, },
+
+ /*
+ * 'G key' generate two event codes, convert to only
+ * one event/key code for now, consider replacing by
+ * a switch (3G switch - SW_3G?)
+ */
+ { KE_KEY, 0x96, { KEY_F14 } },
+ { KE_KEY, 0x97, { KEY_F14 } },
+
+ { KE_END, 0 }
+};
+
+static void acpi_topstar_notify(struct acpi_device *device, u32 event)
+{
+ static bool dup_evnt[2];
+ bool *dup;
+ struct topstar_hkey *hkey = acpi_driver_data(device);
+
+ /* 0x83 and 0x84 key events comes duplicated... */
+ if (event == 0x83 || event == 0x84) {
+ dup = &dup_evnt[event - 0x83];
+ if (*dup) {
+ *dup = false;
+ return;
+ }
+ *dup = true;
+ }
+
+ if (!sparse_keymap_report_event(hkey->inputdev, event, 1, true))
+ pr_info("unknown event = 0x%02x\n", event);
+}
+
+static int acpi_topstar_fncx_switch(struct acpi_device *device, bool state)
+{
+ acpi_status status;
+
+ status = acpi_execute_simple_method(device->handle, "FNCX",
+ state ? 0x86 : 0x87);
+ if (ACPI_FAILURE(status)) {
+ pr_err("Unable to switch FNCX notifications\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int acpi_topstar_init_hkey(struct topstar_hkey *hkey)
+{
+ struct input_dev *input;
+ int error;
+
+ input = input_allocate_device();
+ if (!input)
+ return -ENOMEM;
+
+ input->name = "Topstar Laptop extra buttons";
+ input->phys = "topstar/input0";
+ input->id.bustype = BUS_HOST;
+
+ error = sparse_keymap_setup(input, topstar_keymap, NULL);
+ if (error) {
+ pr_err("Unable to setup input device keymap\n");
+ goto err_free_dev;
+ }
+
+ error = input_register_device(input);
+ if (error) {
+ pr_err("Unable to register input device\n");
+ goto err_free_keymap;
+ }
+
+ hkey->inputdev = input;
+ return 0;
+
+ err_free_keymap:
+ sparse_keymap_free(input);
+ err_free_dev:
+ input_free_device(input);
+ return error;
+}
+
+static int acpi_topstar_add(struct acpi_device *device)
+{
+ struct topstar_hkey *tps_hkey;
+
+ tps_hkey = kzalloc(sizeof(struct topstar_hkey), GFP_KERNEL);
+ if (!tps_hkey)
+ return -ENOMEM;
+
+ strcpy(acpi_device_name(device), "Topstar TPSACPI");
+ strcpy(acpi_device_class(device), ACPI_TOPSTAR_CLASS);
+
+ if (acpi_topstar_fncx_switch(device, true))
+ goto add_err;
+
+ if (acpi_topstar_init_hkey(tps_hkey))
+ goto add_err;
+
+ device->driver_data = tps_hkey;
+ return 0;
+
+add_err:
+ kfree(tps_hkey);
+ return -ENODEV;
+}
+
+static int acpi_topstar_remove(struct acpi_device *device)
+{
+ struct topstar_hkey *tps_hkey = acpi_driver_data(device);
+
+ acpi_topstar_fncx_switch(device, false);
+
+ sparse_keymap_free(tps_hkey->inputdev);
+ input_unregister_device(tps_hkey->inputdev);
+ kfree(tps_hkey);
+
+ return 0;
+}
+
+static const struct acpi_device_id topstar_device_ids[] = {
+ { "TPSACPI01", 0 },
+ { "", 0 },
+};
+MODULE_DEVICE_TABLE(acpi, topstar_device_ids);
+
+static struct acpi_driver acpi_topstar_driver = {
+ .name = "Topstar laptop ACPI driver",
+ .class = ACPI_TOPSTAR_CLASS,
+ .ids = topstar_device_ids,
+ .ops = {
+ .add = acpi_topstar_add,
+ .remove = acpi_topstar_remove,
+ .notify = acpi_topstar_notify,
+ },
+};
+module_acpi_driver(acpi_topstar_driver);
+
+MODULE_AUTHOR("Herton Ronaldo Krzesinski");
+MODULE_DESCRIPTION("Topstar Laptop ACPI Extras driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
new file mode 100644
index 000000000..9956b9902
--- /dev/null
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -0,0 +1,3007 @@
+/*
+ * toshiba_acpi.c - Toshiba Laptop ACPI Extras
+ *
+ * Copyright (C) 2002-2004 John Belmonte
+ * Copyright (C) 2008 Philip Langdale
+ * Copyright (C) 2010 Pierre Ducroquet
+ * Copyright (C) 2014-2015 Azael Avalos
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * The devolpment page for this driver is located at
+ * http://memebeam.org/toys/ToshibaAcpiDriver.
+ *
+ * Credits:
+ * Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse
+ * engineering the Windows drivers
+ * Yasushi Nagato - changes for linux kernel 2.4 -> 2.5
+ * Rob Miller - TV out and hotkeys help
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define TOSHIBA_ACPI_VERSION "0.21"
+#define PROC_INTERFACE_VERSION 1
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/backlight.h>
+#include <linux/rfkill.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/leds.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/i8042.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <linux/uaccess.h>
+#include <acpi/video.h>
+
+MODULE_AUTHOR("John Belmonte");
+MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
+MODULE_LICENSE("GPL");
+
+#define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
+
+/* Scan code for Fn key on TOS1900 models */
+#define TOS1900_FN_SCAN 0x6e
+
+/* Toshiba ACPI method paths */
+#define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX"
+
+/*
+ * The Toshiba configuration interface is composed of the HCI and the SCI,
+ * which are defined as follows:
+ *
+ * HCI is Toshiba's "Hardware Control Interface" which is supposed to
+ * be uniform across all their models. Ideally we would just call
+ * dedicated ACPI methods instead of using this primitive interface.
+ * However the ACPI methods seem to be incomplete in some areas (for
+ * example they allow setting, but not reading, the LCD brightness value),
+ * so this is still useful.
+ *
+ * SCI stands for "System Configuration Interface" which aim is to
+ * conceal differences in hardware between different models.
+ */
+
+#define TCI_WORDS 6
+
+/* operations */
+#define HCI_SET 0xff00
+#define HCI_GET 0xfe00
+#define SCI_OPEN 0xf100
+#define SCI_CLOSE 0xf200
+#define SCI_GET 0xf300
+#define SCI_SET 0xf400
+
+/* return codes */
+#define TOS_SUCCESS 0x0000
+#define TOS_OPEN_CLOSE_OK 0x0044
+#define TOS_FAILURE 0x1000
+#define TOS_NOT_SUPPORTED 0x8000
+#define TOS_ALREADY_OPEN 0x8100
+#define TOS_NOT_OPENED 0x8200
+#define TOS_INPUT_DATA_ERROR 0x8300
+#define TOS_WRITE_PROTECTED 0x8400
+#define TOS_NOT_PRESENT 0x8600
+#define TOS_FIFO_EMPTY 0x8c00
+#define TOS_DATA_NOT_AVAILABLE 0x8d20
+#define TOS_NOT_INITIALIZED 0x8d50
+#define TOS_NOT_INSTALLED 0x8e00
+
+/* registers */
+#define HCI_FAN 0x0004
+#define HCI_TR_BACKLIGHT 0x0005
+#define HCI_SYSTEM_EVENT 0x0016
+#define HCI_VIDEO_OUT 0x001c
+#define HCI_HOTKEY_EVENT 0x001e
+#define HCI_LCD_BRIGHTNESS 0x002a
+#define HCI_WIRELESS 0x0056
+#define HCI_ACCELEROMETER 0x006d
+#define HCI_KBD_ILLUMINATION 0x0095
+#define HCI_ECO_MODE 0x0097
+#define HCI_ACCELEROMETER2 0x00a6
+#define HCI_SYSTEM_INFO 0xc000
+#define SCI_PANEL_POWER_ON 0x010d
+#define SCI_ILLUMINATION 0x014e
+#define SCI_USB_SLEEP_CHARGE 0x0150
+#define SCI_KBD_ILLUM_STATUS 0x015c
+#define SCI_USB_SLEEP_MUSIC 0x015e
+#define SCI_USB_THREE 0x0169
+#define SCI_TOUCHPAD 0x050e
+#define SCI_KBD_FUNCTION_KEYS 0x0522
+
+/* field definitions */
+#define HCI_ACCEL_MASK 0x7fff
+#define HCI_HOTKEY_DISABLE 0x0b
+#define HCI_HOTKEY_ENABLE 0x09
+#define HCI_HOTKEY_SPECIAL_FUNCTIONS 0x10
+#define HCI_LCD_BRIGHTNESS_BITS 3
+#define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS)
+#define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS)
+#define HCI_MISC_SHIFT 0x10
+#define HCI_SYSTEM_TYPE1 0x10
+#define HCI_SYSTEM_TYPE2 0x11
+#define HCI_VIDEO_OUT_LCD 0x1
+#define HCI_VIDEO_OUT_CRT 0x2
+#define HCI_VIDEO_OUT_TV 0x4
+#define HCI_WIRELESS_KILL_SWITCH 0x01
+#define HCI_WIRELESS_BT_PRESENT 0x0f
+#define HCI_WIRELESS_BT_ATTACH 0x40
+#define HCI_WIRELESS_BT_POWER 0x80
+#define SCI_KBD_MODE_MASK 0x1f
+#define SCI_KBD_MODE_FNZ 0x1
+#define SCI_KBD_MODE_AUTO 0x2
+#define SCI_KBD_MODE_ON 0x8
+#define SCI_KBD_MODE_OFF 0x10
+#define SCI_KBD_TIME_MAX 0x3c001a
+#define SCI_USB_CHARGE_MODE_MASK 0xff
+#define SCI_USB_CHARGE_DISABLED 0x00
+#define SCI_USB_CHARGE_ALTERNATE 0x09
+#define SCI_USB_CHARGE_TYPICAL 0x11
+#define SCI_USB_CHARGE_AUTO 0x21
+#define SCI_USB_CHARGE_BAT_MASK 0x7
+#define SCI_USB_CHARGE_BAT_LVL_OFF 0x1
+#define SCI_USB_CHARGE_BAT_LVL_ON 0x4
+#define SCI_USB_CHARGE_BAT_LVL 0x0200
+#define SCI_USB_CHARGE_RAPID_DSP 0x0300
+
+struct toshiba_acpi_dev {
+ struct acpi_device *acpi_dev;
+ const char *method_hci;
+ struct rfkill *bt_rfk;
+ struct input_dev *hotkey_dev;
+ struct work_struct hotkey_work;
+ struct backlight_device *backlight_dev;
+ struct led_classdev led_dev;
+ struct led_classdev kbd_led;
+ struct led_classdev eco_led;
+
+ int force_fan;
+ int last_key_event;
+ int key_event_valid;
+ int kbd_type;
+ int kbd_mode;
+ int kbd_time;
+ int usbsc_bat_level;
+ int usbsc_mode_base;
+ int hotkey_event_type;
+
+ unsigned int illumination_supported:1;
+ unsigned int video_supported:1;
+ unsigned int fan_supported:1;
+ unsigned int system_event_supported:1;
+ unsigned int ntfy_supported:1;
+ unsigned int info_supported:1;
+ unsigned int tr_backlight_supported:1;
+ unsigned int kbd_illum_supported:1;
+ unsigned int kbd_led_registered:1;
+ unsigned int touchpad_supported:1;
+ unsigned int eco_supported:1;
+ unsigned int accelerometer_supported:1;
+ unsigned int usb_sleep_charge_supported:1;
+ unsigned int usb_rapid_charge_supported:1;
+ unsigned int usb_sleep_music_supported:1;
+ unsigned int kbd_function_keys_supported:1;
+ unsigned int panel_power_on_supported:1;
+ unsigned int usb_three_supported:1;
+ unsigned int sysfs_created:1;
+
+ struct mutex mutex;
+};
+
+static struct toshiba_acpi_dev *toshiba_acpi;
+
+static const struct acpi_device_id toshiba_device_ids[] = {
+ {"TOS6200", 0},
+ {"TOS6207", 0},
+ {"TOS6208", 0},
+ {"TOS1900", 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
+
+static const struct key_entry toshiba_acpi_keymap[] = {
+ { KE_KEY, 0x9e, { KEY_RFKILL } },
+ { KE_KEY, 0x101, { KEY_MUTE } },
+ { KE_KEY, 0x102, { KEY_ZOOMOUT } },
+ { KE_KEY, 0x103, { KEY_ZOOMIN } },
+ { KE_KEY, 0x10f, { KEY_TAB } },
+ { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
+ { KE_KEY, 0x139, { KEY_ZOOMRESET } },
+ { KE_KEY, 0x13b, { KEY_COFFEE } },
+ { KE_KEY, 0x13c, { KEY_BATTERY } },
+ { KE_KEY, 0x13d, { KEY_SLEEP } },
+ { KE_KEY, 0x13e, { KEY_SUSPEND } },
+ { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
+ { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
+ { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, 0x142, { KEY_WLAN } },
+ { KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
+ { KE_KEY, 0x17f, { KEY_FN } },
+ { KE_KEY, 0xb05, { KEY_PROG2 } },
+ { KE_KEY, 0xb06, { KEY_WWW } },
+ { KE_KEY, 0xb07, { KEY_MAIL } },
+ { KE_KEY, 0xb30, { KEY_STOP } },
+ { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
+ { KE_KEY, 0xb32, { KEY_NEXTSONG } },
+ { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
+ { KE_KEY, 0xb5a, { KEY_MEDIA } },
+ { KE_IGNORE, 0x1430, { KEY_RESERVED } }, /* Wake from sleep */
+ { KE_IGNORE, 0x1501, { KEY_RESERVED } }, /* Output changed */
+ { KE_IGNORE, 0x1502, { KEY_RESERVED } }, /* HDMI plugged/unplugged */
+ { KE_IGNORE, 0x1ABE, { KEY_RESERVED } }, /* Protection level set */
+ { KE_IGNORE, 0x1ABF, { KEY_RESERVED } }, /* Protection level off */
+ { KE_END, 0 },
+};
+
+static const struct key_entry toshiba_acpi_alt_keymap[] = {
+ { KE_KEY, 0x157, { KEY_MUTE } },
+ { KE_KEY, 0x102, { KEY_ZOOMOUT } },
+ { KE_KEY, 0x103, { KEY_ZOOMIN } },
+ { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
+ { KE_KEY, 0x139, { KEY_ZOOMRESET } },
+ { KE_KEY, 0x13e, { KEY_SWITCHVIDEOMODE } },
+ { KE_KEY, 0x13c, { KEY_BRIGHTNESSDOWN } },
+ { KE_KEY, 0x13d, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, 0x158, { KEY_WLAN } },
+ { KE_KEY, 0x13f, { KEY_TOUCHPAD_TOGGLE } },
+ { KE_END, 0 },
+};
+
+/*
+ * List of models which have a broken acpi-video backlight interface and thus
+ * need to use the toshiba (vendor) interface instead.
+ */
+static const struct dmi_system_id toshiba_vendor_backlight_dmi[] = {
+ {}
+};
+
+/*
+ * Utility
+ */
+
+static inline void _set_bit(u32 *word, u32 mask, int value)
+{
+ *word = (*word & ~mask) | (mask * value);
+}
+
+/*
+ * ACPI interface wrappers
+ */
+
+static int write_acpi_int(const char *methodName, int val)
+{
+ acpi_status status;
+
+ status = acpi_execute_simple_method(NULL, (char *)methodName, val);
+ return (status == AE_OK) ? 0 : -EIO;
+}
+
+/*
+ * Perform a raw configuration call. Here we don't care about input or output
+ * buffer format.
+ */
+static acpi_status tci_raw(struct toshiba_acpi_dev *dev,
+ const u32 in[TCI_WORDS], u32 out[TCI_WORDS])
+{
+ struct acpi_object_list params;
+ union acpi_object in_objs[TCI_WORDS];
+ struct acpi_buffer results;
+ union acpi_object out_objs[TCI_WORDS + 1];
+ acpi_status status;
+ int i;
+
+ params.count = TCI_WORDS;
+ params.pointer = in_objs;
+ for (i = 0; i < TCI_WORDS; ++i) {
+ in_objs[i].type = ACPI_TYPE_INTEGER;
+ in_objs[i].integer.value = in[i];
+ }
+
+ results.length = sizeof(out_objs);
+ results.pointer = out_objs;
+
+ status = acpi_evaluate_object(dev->acpi_dev->handle,
+ (char *)dev->method_hci, &params,
+ &results);
+ if ((status == AE_OK) && (out_objs->package.count <= TCI_WORDS)) {
+ for (i = 0; i < out_objs->package.count; ++i)
+ out[i] = out_objs->package.elements[i].integer.value;
+ }
+
+ return status;
+}
+
+/*
+ * Common hci tasks (get or set one or two value)
+ *
+ * In addition to the ACPI status, the HCI system returns a result which
+ * may be useful (such as "not supported").
+ */
+
+static u32 hci_write1(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
+{
+ u32 in[TCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status = tci_raw(dev, in, out);
+
+ return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
+}
+
+static u32 hci_read1(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
+{
+ u32 in[TCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status = tci_raw(dev, in, out);
+
+ if (ACPI_FAILURE(status))
+ return TOS_FAILURE;
+
+ *out1 = out[2];
+
+ return out[0];
+}
+
+static u32 hci_write2(struct toshiba_acpi_dev *dev, u32 reg, u32 in1, u32 in2)
+{
+ u32 in[TCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status = tci_raw(dev, in, out);
+
+ return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
+}
+
+static u32 hci_read2(struct toshiba_acpi_dev *dev,
+ u32 reg, u32 *out1, u32 *out2)
+{
+ u32 in[TCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status = tci_raw(dev, in, out);
+
+ if (ACPI_FAILURE(status))
+ return TOS_FAILURE;
+
+ *out1 = out[2];
+ *out2 = out[3];
+
+ return out[0];
+}
+
+/*
+ * Common sci tasks
+ */
+
+static int sci_open(struct toshiba_acpi_dev *dev)
+{
+ u32 in[TCI_WORDS] = { SCI_OPEN, 0, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ status = tci_raw(dev, in, out);
+ if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
+ pr_err("ACPI call to open SCI failed\n");
+ return 0;
+ }
+
+ if (out[0] == TOS_OPEN_CLOSE_OK) {
+ return 1;
+ } else if (out[0] == TOS_ALREADY_OPEN) {
+ pr_info("Toshiba SCI already opened\n");
+ return 1;
+ } else if (out[0] == TOS_NOT_SUPPORTED) {
+ /*
+ * Some BIOSes do not have the SCI open/close functions
+ * implemented and return 0x8000 (Not Supported), failing to
+ * register some supported features.
+ *
+ * Simply return 1 if we hit those affected laptops to make the
+ * supported features work.
+ *
+ * In the case that some laptops really do not support the SCI,
+ * all the SCI dependent functions check for TOS_NOT_SUPPORTED,
+ * and thus, not registering support for the queried feature.
+ */
+ return 1;
+ } else if (out[0] == TOS_NOT_PRESENT) {
+ pr_info("Toshiba SCI is not present\n");
+ }
+
+ return 0;
+}
+
+static void sci_close(struct toshiba_acpi_dev *dev)
+{
+ u32 in[TCI_WORDS] = { SCI_CLOSE, 0, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ status = tci_raw(dev, in, out);
+ if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
+ pr_err("ACPI call to close SCI failed\n");
+ return;
+ }
+
+ if (out[0] == TOS_OPEN_CLOSE_OK)
+ return;
+ else if (out[0] == TOS_NOT_OPENED)
+ pr_info("Toshiba SCI not opened\n");
+ else if (out[0] == TOS_NOT_PRESENT)
+ pr_info("Toshiba SCI is not present\n");
+}
+
+static u32 sci_read(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
+{
+ u32 in[TCI_WORDS] = { SCI_GET, reg, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status = tci_raw(dev, in, out);
+
+ if (ACPI_FAILURE(status))
+ return TOS_FAILURE;
+
+ *out1 = out[2];
+
+ return out[0];
+}
+
+static u32 sci_write(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
+{
+ u32 in[TCI_WORDS] = { SCI_SET, reg, in1, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status = tci_raw(dev, in, out);
+
+ return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
+}
+
+/* Illumination support */
+static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
+{
+ u32 in[TCI_WORDS] = { SCI_GET, SCI_ILLUMINATION, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ if (!sci_open(dev))
+ return 0;
+
+ status = tci_raw(dev, in, out);
+ sci_close(dev);
+ if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
+ pr_err("ACPI call to query Illumination support failed\n");
+ return 0;
+ } else if (out[0] == TOS_NOT_SUPPORTED) {
+ pr_info("Illumination device not available\n");
+ return 0;
+ }
+
+ return 1;
+}
+
+static void toshiba_illumination_set(struct led_classdev *cdev,
+ enum led_brightness brightness)
+{
+ struct toshiba_acpi_dev *dev = container_of(cdev,
+ struct toshiba_acpi_dev, led_dev);
+ u32 state, result;
+
+ /* First request : initialize communication. */
+ if (!sci_open(dev))
+ return;
+
+ /* Switch the illumination on/off */
+ state = brightness ? 1 : 0;
+ result = sci_write(dev, SCI_ILLUMINATION, state);
+ sci_close(dev);
+ if (result == TOS_FAILURE) {
+ pr_err("ACPI call for illumination failed\n");
+ return;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("Illumination not supported\n");
+ return;
+ }
+}
+
+static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
+{
+ struct toshiba_acpi_dev *dev = container_of(cdev,
+ struct toshiba_acpi_dev, led_dev);
+ u32 state, result;
+
+ /* First request : initialize communication. */
+ if (!sci_open(dev))
+ return LED_OFF;
+
+ /* Check the illumination */
+ result = sci_read(dev, SCI_ILLUMINATION, &state);
+ sci_close(dev);
+ if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+ pr_err("ACPI call for illumination failed\n");
+ return LED_OFF;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("Illumination not supported\n");
+ return LED_OFF;
+ }
+
+ return state ? LED_FULL : LED_OFF;
+}
+
+/* KBD Illumination */
+static int toshiba_kbd_illum_available(struct toshiba_acpi_dev *dev)
+{
+ u32 in[TCI_WORDS] = { SCI_GET, SCI_KBD_ILLUM_STATUS, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ if (!sci_open(dev))
+ return 0;
+
+ status = tci_raw(dev, in, out);
+ sci_close(dev);
+ if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
+ pr_err("ACPI call to query kbd illumination support failed\n");
+ return 0;
+ } else if (out[0] == TOS_NOT_SUPPORTED) {
+ pr_info("Keyboard illumination not available\n");
+ return 0;
+ }
+
+ /*
+ * Check for keyboard backlight timeout max value,
+ * previous kbd backlight implementation set this to
+ * 0x3c0003, and now the new implementation set this
+ * to 0x3c001a, use this to distinguish between them.
+ */
+ if (out[3] == SCI_KBD_TIME_MAX)
+ dev->kbd_type = 2;
+ else
+ dev->kbd_type = 1;
+ /* Get the current keyboard backlight mode */
+ dev->kbd_mode = out[2] & SCI_KBD_MODE_MASK;
+ /* Get the current time (1-60 seconds) */
+ dev->kbd_time = out[2] >> HCI_MISC_SHIFT;
+
+ return 1;
+}
+
+static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_write(dev, SCI_KBD_ILLUM_STATUS, time);
+ sci_close(dev);
+ if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+ pr_err("ACPI call to set KBD backlight status failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("Keyboard backlight status not supported\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_read(dev, SCI_KBD_ILLUM_STATUS, time);
+ sci_close(dev);
+ if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+ pr_err("ACPI call to get KBD backlight status failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("Keyboard backlight status not supported\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)
+{
+ struct toshiba_acpi_dev *dev = container_of(cdev,
+ struct toshiba_acpi_dev, kbd_led);
+ u32 state, result;
+
+ /* Check the keyboard backlight state */
+ result = hci_read1(dev, HCI_KBD_ILLUMINATION, &state);
+ if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+ pr_err("ACPI call to get the keyboard backlight failed\n");
+ return LED_OFF;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("Keyboard backlight not supported\n");
+ return LED_OFF;
+ }
+
+ return state ? LED_FULL : LED_OFF;
+}
+
+static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
+ enum led_brightness brightness)
+{
+ struct toshiba_acpi_dev *dev = container_of(cdev,
+ struct toshiba_acpi_dev, kbd_led);
+ u32 state, result;
+
+ /* Set the keyboard backlight state */
+ state = brightness ? 1 : 0;
+ result = hci_write1(dev, HCI_KBD_ILLUMINATION, state);
+ if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+ pr_err("ACPI call to set KBD Illumination mode failed\n");
+ return;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("Keyboard backlight not supported\n");
+ return;
+ }
+}
+
+/* TouchPad support */
+static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_write(dev, SCI_TOUCHPAD, state);
+ sci_close(dev);
+ if (result == TOS_FAILURE) {
+ pr_err("ACPI call to set the touchpad failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_read(dev, SCI_TOUCHPAD, state);
+ sci_close(dev);
+ if (result == TOS_FAILURE) {
+ pr_err("ACPI call to query the touchpad failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+/* Eco Mode support */
+static int toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
+{
+ acpi_status status;
+ u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+
+ status = tci_raw(dev, in, out);
+ if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
+ pr_err("ACPI call to get ECO led failed\n");
+ } else if (out[0] == TOS_NOT_INSTALLED) {
+ pr_info("ECO led not installed");
+ } else if (out[0] == TOS_INPUT_DATA_ERROR) {
+ /*
+ * If we receive 0x8300 (Input Data Error), it means that the
+ * LED device is present, but that we just screwed the input
+ * parameters.
+ *
+ * Let's query the status of the LED to see if we really have a
+ * success response, indicating the actual presense of the LED,
+ * bail out otherwise.
+ */
+ in[3] = 1;
+ status = tci_raw(dev, in, out);
+ if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE)
+ pr_err("ACPI call to get ECO led failed\n");
+ else if (out[0] == TOS_SUCCESS)
+ return 1;
+ }
+
+ return 0;
+}
+
+static enum led_brightness
+toshiba_eco_mode_get_status(struct led_classdev *cdev)
+{
+ struct toshiba_acpi_dev *dev = container_of(cdev,
+ struct toshiba_acpi_dev, eco_led);
+ u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ status = tci_raw(dev, in, out);
+ if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
+ pr_err("ACPI call to get ECO led failed\n");
+ return LED_OFF;
+ }
+
+ return out[2] ? LED_FULL : LED_OFF;
+}
+
+static void toshiba_eco_mode_set_status(struct led_classdev *cdev,
+ enum led_brightness brightness)
+{
+ struct toshiba_acpi_dev *dev = container_of(cdev,
+ struct toshiba_acpi_dev, eco_led);
+ u32 in[TCI_WORDS] = { HCI_SET, HCI_ECO_MODE, 0, 1, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ /* Switch the Eco Mode led on/off */
+ in[2] = (brightness) ? 1 : 0;
+ status = tci_raw(dev, in, out);
+ if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
+ pr_err("ACPI call to set ECO led failed\n");
+ return;
+ }
+}
+
+/* Accelerometer support */
+static int toshiba_accelerometer_supported(struct toshiba_acpi_dev *dev)
+{
+ u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER2, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ /*
+ * Check if the accelerometer call exists,
+ * this call also serves as initialization
+ */
+ status = tci_raw(dev, in, out);
+ if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
+ pr_err("ACPI call to query the accelerometer failed\n");
+ return -EIO;
+ } else if (out[0] == TOS_DATA_NOT_AVAILABLE ||
+ out[0] == TOS_NOT_INITIALIZED) {
+ pr_err("Accelerometer not initialized\n");
+ return -EIO;
+ } else if (out[0] == TOS_NOT_SUPPORTED) {
+ pr_info("Accelerometer not supported\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
+ u32 *xy, u32 *z)
+{
+ u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER, 0, 1, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ /* Check the Accelerometer status */
+ status = tci_raw(dev, in, out);
+ if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
+ pr_err("ACPI call to query the accelerometer failed\n");
+ return -EIO;
+ }
+
+ *xy = out[2];
+ *z = out[4];
+
+ return 0;
+}
+
+/* Sleep (Charge and Music) utilities support */
+static void toshiba_usb_sleep_charge_available(struct toshiba_acpi_dev *dev)
+{
+ u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ /* Set the feature to "not supported" in case of error */
+ dev->usb_sleep_charge_supported = 0;
+
+ if (!sci_open(dev))
+ return;
+
+ status = tci_raw(dev, in, out);
+ if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
+ pr_err("ACPI call to get USB Sleep and Charge mode failed\n");
+ sci_close(dev);
+ return;
+ } else if (out[0] == TOS_NOT_SUPPORTED) {
+ pr_info("USB Sleep and Charge not supported\n");
+ sci_close(dev);
+ return;
+ } else if (out[0] == TOS_SUCCESS) {
+ dev->usbsc_mode_base = out[4];
+ }
+
+ in[5] = SCI_USB_CHARGE_BAT_LVL;
+ status = tci_raw(dev, in, out);
+ if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
+ pr_err("ACPI call to get USB Sleep and Charge mode failed\n");
+ sci_close(dev);
+ return;
+ } else if (out[0] == TOS_NOT_SUPPORTED) {
+ pr_info("USB Sleep and Charge not supported\n");
+ sci_close(dev);
+ return;
+ } else if (out[0] == TOS_SUCCESS) {
+ dev->usbsc_bat_level = out[2];
+ /*
+ * If we reach this point, it means that the laptop has support
+ * for this feature and all values are initialized.
+ * Set it as supported.
+ */
+ dev->usb_sleep_charge_supported = 1;
+ }
+
+ sci_close(dev);
+}
+
+static int toshiba_usb_sleep_charge_get(struct toshiba_acpi_dev *dev,
+ u32 *mode)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_read(dev, SCI_USB_SLEEP_CHARGE, mode);
+ sci_close(dev);
+ if (result == TOS_FAILURE) {
+ pr_err("ACPI call to set USB S&C mode failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("USB Sleep and Charge not supported\n");
+ return -ENODEV;
+ } else if (result == TOS_INPUT_DATA_ERROR) {
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int toshiba_usb_sleep_charge_set(struct toshiba_acpi_dev *dev,
+ u32 mode)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_write(dev, SCI_USB_SLEEP_CHARGE, mode);
+ sci_close(dev);
+ if (result == TOS_FAILURE) {
+ pr_err("ACPI call to set USB S&C mode failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("USB Sleep and Charge not supported\n");
+ return -ENODEV;
+ } else if (result == TOS_INPUT_DATA_ERROR) {
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int toshiba_sleep_functions_status_get(struct toshiba_acpi_dev *dev,
+ u32 *mode)
+{
+ u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ in[5] = SCI_USB_CHARGE_BAT_LVL;
+ status = tci_raw(dev, in, out);
+ sci_close(dev);
+ if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
+ pr_err("ACPI call to get USB S&C battery level failed\n");
+ return -EIO;
+ } else if (out[0] == TOS_NOT_SUPPORTED) {
+ pr_info("USB Sleep and Charge not supported\n");
+ return -ENODEV;
+ } else if (out[0] == TOS_INPUT_DATA_ERROR) {
+ return -EIO;
+ }
+
+ *mode = out[2];
+
+ return 0;
+}
+
+static int toshiba_sleep_functions_status_set(struct toshiba_acpi_dev *dev,
+ u32 mode)
+{
+ u32 in[TCI_WORDS] = { SCI_SET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ in[2] = mode;
+ in[5] = SCI_USB_CHARGE_BAT_LVL;
+ status = tci_raw(dev, in, out);
+ sci_close(dev);
+ if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
+ pr_err("ACPI call to set USB S&C battery level failed\n");
+ return -EIO;
+ } else if (out[0] == TOS_NOT_SUPPORTED) {
+ pr_info("USB Sleep and Charge not supported\n");
+ return -ENODEV;
+ } else if (out[0] == TOS_INPUT_DATA_ERROR) {
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int toshiba_usb_rapid_charge_get(struct toshiba_acpi_dev *dev,
+ u32 *state)
+{
+ u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ in[5] = SCI_USB_CHARGE_RAPID_DSP;
+ status = tci_raw(dev, in, out);
+ sci_close(dev);
+ if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
+ pr_err("ACPI call to get USB Rapid Charge failed\n");
+ return -EIO;
+ } else if (out[0] == TOS_NOT_SUPPORTED ||
+ out[0] == TOS_INPUT_DATA_ERROR) {
+ pr_info("USB Rapid Charge not supported\n");
+ return -ENODEV;
+ }
+
+ *state = out[2];
+
+ return 0;
+}
+
+static int toshiba_usb_rapid_charge_set(struct toshiba_acpi_dev *dev,
+ u32 state)
+{
+ u32 in[TCI_WORDS] = { SCI_SET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
+ u32 out[TCI_WORDS];
+ acpi_status status;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ in[2] = state;
+ in[5] = SCI_USB_CHARGE_RAPID_DSP;
+ status = tci_raw(dev, in, out);
+ sci_close(dev);
+ if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
+ pr_err("ACPI call to set USB Rapid Charge failed\n");
+ return -EIO;
+ } else if (out[0] == TOS_NOT_SUPPORTED) {
+ pr_info("USB Rapid Charge not supported\n");
+ return -ENODEV;
+ } else if (out[0] == TOS_INPUT_DATA_ERROR) {
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int toshiba_usb_sleep_music_get(struct toshiba_acpi_dev *dev, u32 *state)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_read(dev, SCI_USB_SLEEP_MUSIC, state);
+ sci_close(dev);
+ if (result == TOS_FAILURE) {
+ pr_err("ACPI call to get Sleep and Music failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("Sleep and Music not supported\n");
+ return -ENODEV;
+ } else if (result == TOS_INPUT_DATA_ERROR) {
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int toshiba_usb_sleep_music_set(struct toshiba_acpi_dev *dev, u32 state)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_write(dev, SCI_USB_SLEEP_MUSIC, state);
+ sci_close(dev);
+ if (result == TOS_FAILURE) {
+ pr_err("ACPI call to set Sleep and Music failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("Sleep and Music not supported\n");
+ return -ENODEV;
+ } else if (result == TOS_INPUT_DATA_ERROR) {
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/* Keyboard function keys */
+static int toshiba_function_keys_get(struct toshiba_acpi_dev *dev, u32 *mode)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_read(dev, SCI_KBD_FUNCTION_KEYS, mode);
+ sci_close(dev);
+ if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+ pr_err("ACPI call to get KBD function keys failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("KBD function keys not supported\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int toshiba_function_keys_set(struct toshiba_acpi_dev *dev, u32 mode)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_write(dev, SCI_KBD_FUNCTION_KEYS, mode);
+ sci_close(dev);
+ if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+ pr_err("ACPI call to set KBD function keys failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("KBD function keys not supported\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+/* Panel Power ON */
+static int toshiba_panel_power_on_get(struct toshiba_acpi_dev *dev, u32 *state)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_read(dev, SCI_PANEL_POWER_ON, state);
+ sci_close(dev);
+ if (result == TOS_FAILURE) {
+ pr_err("ACPI call to get Panel Power ON failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("Panel Power on not supported\n");
+ return -ENODEV;
+ } else if (result == TOS_INPUT_DATA_ERROR) {
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int toshiba_panel_power_on_set(struct toshiba_acpi_dev *dev, u32 state)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_write(dev, SCI_PANEL_POWER_ON, state);
+ sci_close(dev);
+ if (result == TOS_FAILURE) {
+ pr_err("ACPI call to set Panel Power ON failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("Panel Power ON not supported\n");
+ return -ENODEV;
+ } else if (result == TOS_INPUT_DATA_ERROR) {
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/* USB Three */
+static int toshiba_usb_three_get(struct toshiba_acpi_dev *dev, u32 *state)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_read(dev, SCI_USB_THREE, state);
+ sci_close(dev);
+ if (result == TOS_FAILURE) {
+ pr_err("ACPI call to get USB 3 failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("USB 3 not supported\n");
+ return -ENODEV;
+ } else if (result == TOS_INPUT_DATA_ERROR) {
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int toshiba_usb_three_set(struct toshiba_acpi_dev *dev, u32 state)
+{
+ u32 result;
+
+ if (!sci_open(dev))
+ return -EIO;
+
+ result = sci_write(dev, SCI_USB_THREE, state);
+ sci_close(dev);
+ if (result == TOS_FAILURE) {
+ pr_err("ACPI call to set USB 3 failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("USB 3 not supported\n");
+ return -ENODEV;
+ } else if (result == TOS_INPUT_DATA_ERROR) {
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/* Hotkey Event type */
+static int toshiba_hotkey_event_type_get(struct toshiba_acpi_dev *dev,
+ u32 *type)
+{
+ u32 val1 = 0x03;
+ u32 val2 = 0;
+ u32 result;
+
+ result = hci_read2(dev, HCI_SYSTEM_INFO, &val1, &val2);
+ if (result == TOS_FAILURE) {
+ pr_err("ACPI call to get System type failed\n");
+ return -EIO;
+ } else if (result == TOS_NOT_SUPPORTED) {
+ pr_info("System type not supported\n");
+ return -ENODEV;
+ }
+
+ *type = val2;
+
+ return 0;
+}
+
+/* Bluetooth rfkill handlers */
+
+static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
+{
+ u32 hci_result;
+ u32 value, value2;
+
+ value = 0;
+ value2 = 0;
+ hci_result = hci_read2(dev, HCI_WIRELESS, &value, &value2);
+ if (hci_result == TOS_SUCCESS)
+ *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
+
+ return hci_result;
+}
+
+static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
+{
+ u32 hci_result;
+ u32 value, value2;
+
+ value = 0;
+ value2 = 0x0001;
+ hci_result = hci_read2(dev, HCI_WIRELESS, &value, &value2);
+
+ *radio_state = value & HCI_WIRELESS_KILL_SWITCH;
+ return hci_result;
+}
+
+static int bt_rfkill_set_block(void *data, bool blocked)
+{
+ struct toshiba_acpi_dev *dev = data;
+ u32 result1, result2;
+ u32 value;
+ int err;
+ bool radio_state;
+
+ value = (blocked == false);
+
+ mutex_lock(&dev->mutex);
+ if (hci_get_radio_state(dev, &radio_state) != TOS_SUCCESS) {
+ err = -EIO;
+ goto out;
+ }
+
+ if (!radio_state) {
+ err = 0;
+ goto out;
+ }
+
+ result1 = hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER);
+ result2 = hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH);
+
+ if (result1 != TOS_SUCCESS || result2 != TOS_SUCCESS)
+ err = -EIO;
+ else
+ err = 0;
+ out:
+ mutex_unlock(&dev->mutex);
+ return err;
+}
+
+static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
+{
+ bool new_rfk_state;
+ bool value;
+ u32 hci_result;
+ struct toshiba_acpi_dev *dev = data;
+
+ mutex_lock(&dev->mutex);
+
+ hci_result = hci_get_radio_state(dev, &value);
+ if (hci_result != TOS_SUCCESS) {
+ /* Can't do anything useful */
+ mutex_unlock(&dev->mutex);
+ return;
+ }
+
+ new_rfk_state = value;
+
+ mutex_unlock(&dev->mutex);
+
+ if (rfkill_set_hw_state(rfkill, !new_rfk_state))
+ bt_rfkill_set_block(data, true);
+}
+
+static const struct rfkill_ops toshiba_rfk_ops = {
+ .set_block = bt_rfkill_set_block,
+ .poll = bt_rfkill_poll,
+};
+
+static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled)
+{
+ u32 hci_result;
+ u32 status;
+
+ hci_result = hci_read1(dev, HCI_TR_BACKLIGHT, &status);
+ *enabled = !status;
+ return hci_result == TOS_SUCCESS ? 0 : -EIO;
+}
+
+static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable)
+{
+ u32 hci_result;
+ u32 value = !enable;
+
+ hci_result = hci_write1(dev, HCI_TR_BACKLIGHT, value);
+ return hci_result == TOS_SUCCESS ? 0 : -EIO;
+}
+
+static struct proc_dir_entry *toshiba_proc_dir /*= 0*/;
+
+static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
+{
+ u32 hci_result;
+ u32 value;
+ int brightness = 0;
+
+ if (dev->tr_backlight_supported) {
+ bool enabled;
+ int ret = get_tr_backlight_status(dev, &enabled);
+
+ if (ret)
+ return ret;
+ if (enabled)
+ return 0;
+ brightness++;
+ }
+
+ hci_result = hci_read1(dev, HCI_LCD_BRIGHTNESS, &value);
+ if (hci_result == TOS_SUCCESS)
+ return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
+
+ return -EIO;
+}
+
+static int get_lcd_brightness(struct backlight_device *bd)
+{
+ struct toshiba_acpi_dev *dev = bl_get_data(bd);
+
+ return __get_lcd_brightness(dev);
+}
+
+static int lcd_proc_show(struct seq_file *m, void *v)
+{
+ struct toshiba_acpi_dev *dev = m->private;
+ int value;
+ int levels;
+
+ if (!dev->backlight_dev)
+ return -ENODEV;
+
+ levels = dev->backlight_dev->props.max_brightness + 1;
+ value = get_lcd_brightness(dev->backlight_dev);
+ if (value >= 0) {
+ seq_printf(m, "brightness: %d\n", value);
+ seq_printf(m, "brightness_levels: %d\n", levels);
+ return 0;
+ }
+
+ pr_err("Error reading LCD brightness\n");
+ return -EIO;
+}
+
+static int lcd_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, lcd_proc_show, PDE_DATA(inode));
+}
+
+static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
+{
+ u32 hci_result;
+
+ if (dev->tr_backlight_supported) {
+ bool enable = !value;
+ int ret = set_tr_backlight_status(dev, enable);
+
+ if (ret)
+ return ret;
+ if (value)
+ value--;
+ }
+
+ value = value << HCI_LCD_BRIGHTNESS_SHIFT;
+ hci_result = hci_write1(dev, HCI_LCD_BRIGHTNESS, value);
+ return hci_result == TOS_SUCCESS ? 0 : -EIO;
+}
+
+static int set_lcd_status(struct backlight_device *bd)
+{
+ struct toshiba_acpi_dev *dev = bl_get_data(bd);
+
+ return set_lcd_brightness(dev, bd->props.brightness);
+}
+
+static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
+ char cmd[42];
+ size_t len;
+ int value;
+ int ret;
+ int levels = dev->backlight_dev->props.max_brightness + 1;
+
+ len = min(count, sizeof(cmd) - 1);
+ if (copy_from_user(cmd, buf, len))
+ return -EFAULT;
+ cmd[len] = '\0';
+
+ if (sscanf(cmd, " brightness : %i", &value) == 1 &&
+ value >= 0 && value < levels) {
+ ret = set_lcd_brightness(dev, value);
+ if (ret == 0)
+ ret = count;
+ } else {
+ ret = -EINVAL;
+ }
+ return ret;
+}
+
+static const struct file_operations lcd_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = lcd_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = lcd_proc_write,
+};
+
+static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
+{
+ u32 hci_result;
+
+ hci_result = hci_read1(dev, HCI_VIDEO_OUT, status);
+ return hci_result == TOS_SUCCESS ? 0 : -EIO;
+}
+
+static int video_proc_show(struct seq_file *m, void *v)
+{
+ struct toshiba_acpi_dev *dev = m->private;
+ u32 value;
+ int ret;
+
+ ret = get_video_status(dev, &value);
+ if (!ret) {
+ int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
+ int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
+ int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
+
+ seq_printf(m, "lcd_out: %d\n", is_lcd);
+ seq_printf(m, "crt_out: %d\n", is_crt);
+ seq_printf(m, "tv_out: %d\n", is_tv);
+ }
+
+ return ret;
+}
+
+static int video_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, video_proc_show, PDE_DATA(inode));
+}
+
+static ssize_t video_proc_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
+ char *cmd, *buffer;
+ int ret;
+ int value;
+ int remain = count;
+ int lcd_out = -1;
+ int crt_out = -1;
+ int tv_out = -1;
+ u32 video_out;
+
+ cmd = kmalloc(count + 1, GFP_KERNEL);
+ if (!cmd)
+ return -ENOMEM;
+ if (copy_from_user(cmd, buf, count)) {
+ kfree(cmd);
+ return -EFAULT;
+ }
+ cmd[count] = '\0';
+
+ buffer = cmd;
+
+ /*
+ * Scan expression. Multiple expressions may be delimited with ;
+ * NOTE: To keep scanning simple, invalid fields are ignored.
+ */
+ while (remain) {
+ if (sscanf(buffer, " lcd_out : %i", &value) == 1)
+ lcd_out = value & 1;
+ else if (sscanf(buffer, " crt_out : %i", &value) == 1)
+ crt_out = value & 1;
+ else if (sscanf(buffer, " tv_out : %i", &value) == 1)
+ tv_out = value & 1;
+ /* Advance to one character past the next ; */
+ do {
+ ++buffer;
+ --remain;
+ } while (remain && *(buffer - 1) != ';');
+ }
+
+ kfree(cmd);
+
+ ret = get_video_status(dev, &video_out);
+ if (!ret) {
+ unsigned int new_video_out = video_out;
+
+ if (lcd_out != -1)
+ _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
+ if (crt_out != -1)
+ _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
+ if (tv_out != -1)
+ _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
+ /*
+ * To avoid unnecessary video disruption, only write the new
+ * video setting if something changed. */
+ if (new_video_out != video_out)
+ ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
+ }
+
+ return ret ? ret : count;
+}
+
+static const struct file_operations video_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = video_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = video_proc_write,
+};
+
+static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
+{
+ u32 hci_result;
+
+ hci_result = hci_read1(dev, HCI_FAN, status);
+ return hci_result == TOS_SUCCESS ? 0 : -EIO;
+}
+
+static int fan_proc_show(struct seq_file *m, void *v)
+{
+ struct toshiba_acpi_dev *dev = m->private;
+ int ret;
+ u32 value;
+
+ ret = get_fan_status(dev, &value);
+ if (!ret) {
+ seq_printf(m, "running: %d\n", (value > 0));
+ seq_printf(m, "force_on: %d\n", dev->force_fan);
+ }
+
+ return ret;
+}
+
+static int fan_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, fan_proc_show, PDE_DATA(inode));
+}
+
+static ssize_t fan_proc_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
+ char cmd[42];
+ size_t len;
+ int value;
+ u32 hci_result;
+
+ len = min(count, sizeof(cmd) - 1);
+ if (copy_from_user(cmd, buf, len))
+ return -EFAULT;
+ cmd[len] = '\0';
+
+ if (sscanf(cmd, " force_on : %i", &value) == 1 &&
+ value >= 0 && value <= 1) {
+ hci_result = hci_write1(dev, HCI_FAN, value);
+ if (hci_result == TOS_SUCCESS)
+ dev->force_fan = value;
+ else
+ return -EIO;
+ } else {
+ return -EINVAL;
+ }
+
+ return count;
+}
+
+static const struct file_operations fan_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = fan_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = fan_proc_write,
+};
+
+static int keys_proc_show(struct seq_file *m, void *v)
+{
+ struct toshiba_acpi_dev *dev = m->private;
+ u32 hci_result;
+ u32 value;
+
+ if (!dev->key_event_valid && dev->system_event_supported) {
+ hci_result = hci_read1(dev, HCI_SYSTEM_EVENT, &value);
+ if (hci_result == TOS_SUCCESS) {
+ dev->key_event_valid = 1;
+ dev->last_key_event = value;
+ } else if (hci_result == TOS_FIFO_EMPTY) {
+ /* Better luck next time */
+ } else if (hci_result == TOS_NOT_SUPPORTED) {
+ /*
+ * This is a workaround for an unresolved issue on
+ * some machines where system events sporadically
+ * become disabled.
+ */
+ hci_result = hci_write1(dev, HCI_SYSTEM_EVENT, 1);
+ pr_notice("Re-enabled hotkeys\n");
+ } else {
+ pr_err("Error reading hotkey status\n");
+ return -EIO;
+ }
+ }
+
+ seq_printf(m, "hotkey_ready: %d\n", dev->key_event_valid);
+ seq_printf(m, "hotkey: 0x%04x\n", dev->last_key_event);
+ return 0;
+}
+
+static int keys_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, keys_proc_show, PDE_DATA(inode));
+}
+
+static ssize_t keys_proc_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
+ char cmd[42];
+ size_t len;
+ int value;
+
+ len = min(count, sizeof(cmd) - 1);
+ if (copy_from_user(cmd, buf, len))
+ return -EFAULT;
+ cmd[len] = '\0';
+
+ if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0)
+ dev->key_event_valid = 0;
+ else
+ return -EINVAL;
+
+ return count;
+}
+
+static const struct file_operations keys_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = keys_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = keys_proc_write,
+};
+
+static int version_proc_show(struct seq_file *m, void *v)
+{
+ seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION);
+ seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION);
+ return 0;
+}
+
+static int version_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, version_proc_show, PDE_DATA(inode));
+}
+
+static const struct file_operations version_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = version_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+/*
+ * Proc and module init
+ */
+
+#define PROC_TOSHIBA "toshiba"
+
+static void create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
+{
+ if (dev->backlight_dev)
+ proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
+ &lcd_proc_fops, dev);
+ if (dev->video_supported)
+ proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
+ &video_proc_fops, dev);
+ if (dev->fan_supported)
+ proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
+ &fan_proc_fops, dev);
+ if (dev->hotkey_dev)
+ proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
+ &keys_proc_fops, dev);
+ proc_create_data("version", S_IRUGO, toshiba_proc_dir,
+ &version_proc_fops, dev);
+}
+
+static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
+{
+ if (dev->backlight_dev)
+ remove_proc_entry("lcd", toshiba_proc_dir);
+ if (dev->video_supported)
+ remove_proc_entry("video", toshiba_proc_dir);
+ if (dev->fan_supported)
+ remove_proc_entry("fan", toshiba_proc_dir);
+ if (dev->hotkey_dev)
+ remove_proc_entry("keys", toshiba_proc_dir);
+ remove_proc_entry("version", toshiba_proc_dir);
+}
+
+static const struct backlight_ops toshiba_backlight_data = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .get_brightness = get_lcd_brightness,
+ .update_status = set_lcd_status,
+};
+
+/*
+ * Sysfs files
+ */
+static ssize_t version_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%s\n", TOSHIBA_ACPI_VERSION);
+}
+static DEVICE_ATTR_RO(version);
+
+static ssize_t fan_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 result;
+ int state;
+ int ret;
+
+ ret = kstrtoint(buf, 0, &state);
+ if (ret)
+ return ret;
+
+ if (state != 0 && state != 1)
+ return -EINVAL;
+
+ result = hci_write1(toshiba, HCI_FAN, state);
+ if (result == TOS_FAILURE)
+ return -EIO;
+ else if (result == TOS_NOT_SUPPORTED)
+ return -ENODEV;
+
+ return count;
+}
+
+static ssize_t fan_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 value;
+ int ret;
+
+ ret = get_fan_status(toshiba, &value);
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "%d\n", value);
+}
+static DEVICE_ATTR_RW(fan);
+
+static ssize_t kbd_backlight_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ int mode;
+ int time;
+ int ret;
+
+
+ ret = kstrtoint(buf, 0, &mode);
+ if (ret)
+ return ret;
+
+ /* Check for supported modes depending on keyboard backlight type */
+ if (toshiba->kbd_type == 1) {
+ /* Type 1 supports SCI_KBD_MODE_FNZ and SCI_KBD_MODE_AUTO */
+ if (mode != SCI_KBD_MODE_FNZ && mode != SCI_KBD_MODE_AUTO)
+ return -EINVAL;
+ } else if (toshiba->kbd_type == 2) {
+ /* Type 2 doesn't support SCI_KBD_MODE_FNZ */
+ if (mode != SCI_KBD_MODE_AUTO && mode != SCI_KBD_MODE_ON &&
+ mode != SCI_KBD_MODE_OFF)
+ return -EINVAL;
+ }
+
+ /*
+ * Set the Keyboard Backlight Mode where:
+ * Auto - KBD backlight turns off automatically in given time
+ * FN-Z - KBD backlight "toggles" when hotkey pressed
+ * ON - KBD backlight is always on
+ * OFF - KBD backlight is always off
+ */
+
+ /* Only make a change if the actual mode has changed */
+ if (toshiba->kbd_mode != mode) {
+ /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
+ time = toshiba->kbd_time << HCI_MISC_SHIFT;
+
+ /* OR the "base time" to the actual method format */
+ if (toshiba->kbd_type == 1) {
+ /* Type 1 requires the current mode */
+ time |= toshiba->kbd_mode;
+ } else if (toshiba->kbd_type == 2) {
+ /* Type 2 requires the desired mode */
+ time |= mode;
+ }
+
+ ret = toshiba_kbd_illum_status_set(toshiba, time);
+ if (ret)
+ return ret;
+
+ toshiba->kbd_mode = mode;
+ }
+
+ return count;
+}
+
+static ssize_t kbd_backlight_mode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 time;
+
+ if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
+ return -EIO;
+
+ return sprintf(buf, "%i\n", time & SCI_KBD_MODE_MASK);
+}
+static DEVICE_ATTR_RW(kbd_backlight_mode);
+
+static ssize_t kbd_type_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d\n", toshiba->kbd_type);
+}
+static DEVICE_ATTR_RO(kbd_type);
+
+static ssize_t available_kbd_modes_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+
+ if (toshiba->kbd_type == 1)
+ return sprintf(buf, "%x %x\n",
+ SCI_KBD_MODE_FNZ, SCI_KBD_MODE_AUTO);
+
+ return sprintf(buf, "%x %x %x\n",
+ SCI_KBD_MODE_AUTO, SCI_KBD_MODE_ON, SCI_KBD_MODE_OFF);
+}
+static DEVICE_ATTR_RO(available_kbd_modes);
+
+static ssize_t kbd_backlight_timeout_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ int time;
+ int ret;
+
+ ret = kstrtoint(buf, 0, &time);
+ if (ret)
+ return ret;
+
+ /* Check for supported values depending on kbd_type */
+ if (toshiba->kbd_type == 1) {
+ if (time < 0 || time > 60)
+ return -EINVAL;
+ } else if (toshiba->kbd_type == 2) {
+ if (time < 1 || time > 60)
+ return -EINVAL;
+ }
+
+ /* Set the Keyboard Backlight Timeout */
+
+ /* Only make a change if the actual timeout has changed */
+ if (toshiba->kbd_time != time) {
+ /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
+ time = time << HCI_MISC_SHIFT;
+ /* OR the "base time" to the actual method format */
+ if (toshiba->kbd_type == 1)
+ time |= SCI_KBD_MODE_FNZ;
+ else if (toshiba->kbd_type == 2)
+ time |= SCI_KBD_MODE_AUTO;
+
+ ret = toshiba_kbd_illum_status_set(toshiba, time);
+ if (ret)
+ return ret;
+
+ toshiba->kbd_time = time >> HCI_MISC_SHIFT;
+ }
+
+ return count;
+}
+
+static ssize_t kbd_backlight_timeout_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 time;
+
+ if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
+ return -EIO;
+
+ return sprintf(buf, "%i\n", time >> HCI_MISC_SHIFT);
+}
+static DEVICE_ATTR_RW(kbd_backlight_timeout);
+
+static ssize_t touchpad_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ int state;
+ int ret;
+
+ /* Set the TouchPad on/off, 0 - Disable | 1 - Enable */
+ ret = kstrtoint(buf, 0, &state);
+ if (ret)
+ return ret;
+ if (state != 0 && state != 1)
+ return -EINVAL;
+
+ ret = toshiba_touchpad_set(toshiba, state);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static ssize_t touchpad_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 state;
+ int ret;
+
+ ret = toshiba_touchpad_get(toshiba, &state);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%i\n", state);
+}
+static DEVICE_ATTR_RW(touchpad);
+
+static ssize_t position_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 xyval, zval, tmp;
+ u16 x, y, z;
+ int ret;
+
+ xyval = zval = 0;
+ ret = toshiba_accelerometer_get(toshiba, &xyval, &zval);
+ if (ret < 0)
+ return ret;
+
+ x = xyval & HCI_ACCEL_MASK;
+ tmp = xyval >> HCI_MISC_SHIFT;
+ y = tmp & HCI_ACCEL_MASK;
+ z = zval & HCI_ACCEL_MASK;
+
+ return sprintf(buf, "%d %d %d\n", x, y, z);
+}
+static DEVICE_ATTR_RO(position);
+
+static ssize_t usb_sleep_charge_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 mode;
+ int ret;
+
+ ret = toshiba_usb_sleep_charge_get(toshiba, &mode);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%x\n", mode & SCI_USB_CHARGE_MODE_MASK);
+}
+
+static ssize_t usb_sleep_charge_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 mode;
+ int state;
+ int ret;
+
+ ret = kstrtoint(buf, 0, &state);
+ if (ret)
+ return ret;
+ /*
+ * Check for supported values, where:
+ * 0 - Disabled
+ * 1 - Alternate (Non USB conformant devices that require more power)
+ * 2 - Auto (USB conformant devices)
+ * 3 - Typical
+ */
+ if (state != 0 && state != 1 && state != 2 && state != 3)
+ return -EINVAL;
+
+ /* Set the USB charging mode to internal value */
+ mode = toshiba->usbsc_mode_base;
+ if (state == 0)
+ mode |= SCI_USB_CHARGE_DISABLED;
+ else if (state == 1)
+ mode |= SCI_USB_CHARGE_ALTERNATE;
+ else if (state == 2)
+ mode |= SCI_USB_CHARGE_AUTO;
+ else if (state == 3)
+ mode |= SCI_USB_CHARGE_TYPICAL;
+
+ ret = toshiba_usb_sleep_charge_set(toshiba, mode);
+ if (ret)
+ return ret;
+
+ return count;
+}
+static DEVICE_ATTR_RW(usb_sleep_charge);
+
+static ssize_t sleep_functions_on_battery_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 state;
+ int bat_lvl;
+ int status;
+ int ret;
+ int tmp;
+
+ ret = toshiba_sleep_functions_status_get(toshiba, &state);
+ if (ret < 0)
+ return ret;
+
+ /* Determine the status: 0x4 - Enabled | 0x1 - Disabled */
+ tmp = state & SCI_USB_CHARGE_BAT_MASK;
+ status = (tmp == 0x4) ? 1 : 0;
+ /* Determine the battery level set */
+ bat_lvl = state >> HCI_MISC_SHIFT;
+
+ return sprintf(buf, "%d %d\n", status, bat_lvl);
+}
+
+static ssize_t sleep_functions_on_battery_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 status;
+ int value;
+ int ret;
+ int tmp;
+
+ ret = kstrtoint(buf, 0, &value);
+ if (ret)
+ return ret;
+
+ /*
+ * Set the status of the function:
+ * 0 - Disabled
+ * 1-100 - Enabled
+ */
+ if (value < 0 || value > 100)
+ return -EINVAL;
+
+ if (value == 0) {
+ tmp = toshiba->usbsc_bat_level << HCI_MISC_SHIFT;
+ status = tmp | SCI_USB_CHARGE_BAT_LVL_OFF;
+ } else {
+ tmp = value << HCI_MISC_SHIFT;
+ status = tmp | SCI_USB_CHARGE_BAT_LVL_ON;
+ }
+ ret = toshiba_sleep_functions_status_set(toshiba, status);
+ if (ret < 0)
+ return ret;
+
+ toshiba->usbsc_bat_level = status >> HCI_MISC_SHIFT;
+
+ return count;
+}
+static DEVICE_ATTR_RW(sleep_functions_on_battery);
+
+static ssize_t usb_rapid_charge_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 state;
+ int ret;
+
+ ret = toshiba_usb_rapid_charge_get(toshiba, &state);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", state);
+}
+
+static ssize_t usb_rapid_charge_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ int state;
+ int ret;
+
+ ret = kstrtoint(buf, 0, &state);
+ if (ret)
+ return ret;
+ if (state != 0 && state != 1)
+ return -EINVAL;
+
+ ret = toshiba_usb_rapid_charge_set(toshiba, state);
+ if (ret)
+ return ret;
+
+ return count;
+}
+static DEVICE_ATTR_RW(usb_rapid_charge);
+
+static ssize_t usb_sleep_music_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 state;
+ int ret;
+
+ ret = toshiba_usb_sleep_music_get(toshiba, &state);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", state);
+}
+
+static ssize_t usb_sleep_music_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ int state;
+ int ret;
+
+ ret = kstrtoint(buf, 0, &state);
+ if (ret)
+ return ret;
+ if (state != 0 && state != 1)
+ return -EINVAL;
+
+ ret = toshiba_usb_sleep_music_set(toshiba, state);
+ if (ret)
+ return ret;
+
+ return count;
+}
+static DEVICE_ATTR_RW(usb_sleep_music);
+
+static ssize_t kbd_function_keys_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ int mode;
+ int ret;
+
+ ret = toshiba_function_keys_get(toshiba, &mode);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", mode);
+}
+
+static ssize_t kbd_function_keys_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ int mode;
+ int ret;
+
+ ret = kstrtoint(buf, 0, &mode);
+ if (ret)
+ return ret;
+ /*
+ * Check for the function keys mode where:
+ * 0 - Normal operation (F{1-12} as usual and hotkeys via FN-F{1-12})
+ * 1 - Special functions (Opposite of the above setting)
+ */
+ if (mode != 0 && mode != 1)
+ return -EINVAL;
+
+ ret = toshiba_function_keys_set(toshiba, mode);
+ if (ret)
+ return ret;
+
+ pr_info("Reboot for changes to KBD Function Keys to take effect");
+
+ return count;
+}
+static DEVICE_ATTR_RW(kbd_function_keys);
+
+static ssize_t panel_power_on_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 state;
+ int ret;
+
+ ret = toshiba_panel_power_on_get(toshiba, &state);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", state);
+}
+
+static ssize_t panel_power_on_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ int state;
+ int ret;
+
+ ret = kstrtoint(buf, 0, &state);
+ if (ret)
+ return ret;
+ if (state != 0 && state != 1)
+ return -EINVAL;
+
+ ret = toshiba_panel_power_on_set(toshiba, state);
+ if (ret)
+ return ret;
+
+ pr_info("Reboot for changes to Panel Power ON to take effect");
+
+ return count;
+}
+static DEVICE_ATTR_RW(panel_power_on);
+
+static ssize_t usb_three_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 state;
+ int ret;
+
+ ret = toshiba_usb_three_get(toshiba, &state);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", state);
+}
+
+static ssize_t usb_three_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ int state;
+ int ret;
+
+ ret = kstrtoint(buf, 0, &state);
+ if (ret)
+ return ret;
+ /*
+ * Check for USB 3 mode where:
+ * 0 - Disabled (Acts like a USB 2 port, saving power)
+ * 1 - Enabled
+ */
+ if (state != 0 && state != 1)
+ return -EINVAL;
+
+ ret = toshiba_usb_three_set(toshiba, state);
+ if (ret)
+ return ret;
+
+ pr_info("Reboot for changes to USB 3 to take effect");
+
+ return count;
+}
+static DEVICE_ATTR_RW(usb_three);
+
+static struct attribute *toshiba_attributes[] = {
+ &dev_attr_version.attr,
+ &dev_attr_fan.attr,
+ &dev_attr_kbd_backlight_mode.attr,
+ &dev_attr_kbd_type.attr,
+ &dev_attr_available_kbd_modes.attr,
+ &dev_attr_kbd_backlight_timeout.attr,
+ &dev_attr_touchpad.attr,
+ &dev_attr_position.attr,
+ &dev_attr_usb_sleep_charge.attr,
+ &dev_attr_sleep_functions_on_battery.attr,
+ &dev_attr_usb_rapid_charge.attr,
+ &dev_attr_usb_sleep_music.attr,
+ &dev_attr_kbd_function_keys.attr,
+ &dev_attr_panel_power_on.attr,
+ &dev_attr_usb_three.attr,
+ NULL,
+};
+
+static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
+ struct attribute *attr, int idx)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct toshiba_acpi_dev *drv = dev_get_drvdata(dev);
+ bool exists = true;
+
+ if (attr == &dev_attr_fan.attr)
+ exists = (drv->fan_supported) ? true : false;
+ else if (attr == &dev_attr_kbd_backlight_mode.attr)
+ exists = (drv->kbd_illum_supported) ? true : false;
+ else if (attr == &dev_attr_kbd_backlight_timeout.attr)
+ exists = (drv->kbd_mode == SCI_KBD_MODE_AUTO) ? true : false;
+ else if (attr == &dev_attr_touchpad.attr)
+ exists = (drv->touchpad_supported) ? true : false;
+ else if (attr == &dev_attr_position.attr)
+ exists = (drv->accelerometer_supported) ? true : false;
+ else if (attr == &dev_attr_usb_sleep_charge.attr)
+ exists = (drv->usb_sleep_charge_supported) ? true : false;
+ else if (attr == &dev_attr_sleep_functions_on_battery.attr)
+ exists = (drv->usb_sleep_charge_supported) ? true : false;
+ else if (attr == &dev_attr_usb_rapid_charge.attr)
+ exists = (drv->usb_rapid_charge_supported) ? true : false;
+ else if (attr == &dev_attr_usb_sleep_music.attr)
+ exists = (drv->usb_sleep_music_supported) ? true : false;
+ else if (attr == &dev_attr_kbd_function_keys.attr)
+ exists = (drv->kbd_function_keys_supported) ? true : false;
+ else if (attr == &dev_attr_panel_power_on.attr)
+ exists = (drv->panel_power_on_supported) ? true : false;
+ else if (attr == &dev_attr_usb_three.attr)
+ exists = (drv->usb_three_supported) ? true : false;
+
+ return exists ? attr->mode : 0;
+}
+
+static struct attribute_group toshiba_attr_group = {
+ .is_visible = toshiba_sysfs_is_visible,
+ .attrs = toshiba_attributes,
+};
+
+/*
+ * Hotkeys
+ */
+static int toshiba_acpi_enable_hotkeys(struct toshiba_acpi_dev *dev)
+{
+ acpi_status status;
+ u32 result;
+
+ status = acpi_evaluate_object(dev->acpi_dev->handle,
+ "ENAB", NULL, NULL);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ result = hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE);
+ if (result == TOS_FAILURE)
+ return -EIO;
+ else if (result == TOS_NOT_SUPPORTED)
+ return -ENODEV;
+
+ return 0;
+}
+
+static void toshiba_acpi_enable_special_functions(struct toshiba_acpi_dev *dev)
+{
+ u32 result;
+
+ /*
+ * Re-activate the hotkeys, but this time, we are using the
+ * "Special Functions" mode.
+ */
+ result = hci_write1(dev, HCI_HOTKEY_EVENT,
+ HCI_HOTKEY_SPECIAL_FUNCTIONS);
+ if (result != TOS_SUCCESS)
+ pr_err("Could not enable the Special Function mode\n");
+}
+
+static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
+ struct serio *port)
+{
+ if (str & I8042_STR_AUXDATA)
+ return false;
+
+ if (unlikely(data == 0xe0))
+ return false;
+
+ if ((data & 0x7f) == TOS1900_FN_SCAN) {
+ schedule_work(&toshiba_acpi->hotkey_work);
+ return true;
+ }
+
+ return false;
+}
+
+static void toshiba_acpi_hotkey_work(struct work_struct *work)
+{
+ acpi_handle ec_handle = ec_get_handle();
+ acpi_status status;
+
+ if (!ec_handle)
+ return;
+
+ status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
+ if (ACPI_FAILURE(status))
+ pr_err("ACPI NTFY method execution failed\n");
+}
+
+/*
+ * Returns hotkey scancode, or < 0 on failure.
+ */
+static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
+{
+ unsigned long long value;
+ acpi_status status;
+
+ status = acpi_evaluate_integer(dev->acpi_dev->handle, "INFO",
+ NULL, &value);
+ if (ACPI_FAILURE(status)) {
+ pr_err("ACPI INFO method execution failed\n");
+ return -EIO;
+ }
+
+ return value;
+}
+
+static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
+ int scancode)
+{
+ if (scancode == 0x100)
+ return;
+
+ /* Act on key press; ignore key release */
+ if (scancode & 0x80)
+ return;
+
+ if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
+ pr_info("Unknown key %x\n", scancode);
+}
+
+static void toshiba_acpi_process_hotkeys(struct toshiba_acpi_dev *dev)
+{
+ u32 hci_result, value;
+ int retries = 3;
+ int scancode;
+
+ if (dev->info_supported) {
+ scancode = toshiba_acpi_query_hotkey(dev);
+ if (scancode < 0)
+ pr_err("Failed to query hotkey event\n");
+ else if (scancode != 0)
+ toshiba_acpi_report_hotkey(dev, scancode);
+ } else if (dev->system_event_supported) {
+ do {
+ hci_result = hci_read1(dev, HCI_SYSTEM_EVENT, &value);
+ switch (hci_result) {
+ case TOS_SUCCESS:
+ toshiba_acpi_report_hotkey(dev, (int)value);
+ break;
+ case TOS_NOT_SUPPORTED:
+ /*
+ * This is a workaround for an unresolved
+ * issue on some machines where system events
+ * sporadically become disabled.
+ */
+ hci_result =
+ hci_write1(dev, HCI_SYSTEM_EVENT, 1);
+ pr_notice("Re-enabled hotkeys\n");
+ /* Fall through */
+ default:
+ retries--;
+ break;
+ }
+ } while (retries && hci_result != TOS_FIFO_EMPTY);
+ }
+}
+
+static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
+{
+ const struct key_entry *keymap = toshiba_acpi_keymap;
+ acpi_handle ec_handle;
+ u32 events_type;
+ u32 hci_result;
+ int error;
+
+ error = toshiba_acpi_enable_hotkeys(dev);
+ if (error)
+ return error;
+
+ error = toshiba_hotkey_event_type_get(dev, &events_type);
+ if (error) {
+ pr_err("Unable to query Hotkey Event Type\n");
+ return error;
+ }
+ dev->hotkey_event_type = events_type;
+
+ dev->hotkey_dev = input_allocate_device();
+ if (!dev->hotkey_dev)
+ return -ENOMEM;
+
+ dev->hotkey_dev->name = "Toshiba input device";
+ dev->hotkey_dev->phys = "toshiba_acpi/input0";
+ dev->hotkey_dev->id.bustype = BUS_HOST;
+
+ if (events_type == HCI_SYSTEM_TYPE1 ||
+ !dev->kbd_function_keys_supported)
+ keymap = toshiba_acpi_keymap;
+ else if (events_type == HCI_SYSTEM_TYPE2 ||
+ dev->kbd_function_keys_supported)
+ keymap = toshiba_acpi_alt_keymap;
+ else
+ pr_info("Unknown event type received %x\n", events_type);
+ error = sparse_keymap_setup(dev->hotkey_dev, keymap, NULL);
+ if (error)
+ goto err_free_dev;
+
+ /*
+ * For some machines the SCI responsible for providing hotkey
+ * notification doesn't fire. We can trigger the notification
+ * whenever the Fn key is pressed using the NTFY method, if
+ * supported, so if it's present set up an i8042 key filter
+ * for this purpose.
+ */
+ ec_handle = ec_get_handle();
+ if (ec_handle && acpi_has_method(ec_handle, "NTFY")) {
+ INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
+
+ error = i8042_install_filter(toshiba_acpi_i8042_filter);
+ if (error) {
+ pr_err("Error installing key filter\n");
+ goto err_free_keymap;
+ }
+
+ dev->ntfy_supported = 1;
+ }
+
+ /*
+ * Determine hotkey query interface. Prefer using the INFO
+ * method when it is available.
+ */
+ if (acpi_has_method(dev->acpi_dev->handle, "INFO"))
+ dev->info_supported = 1;
+ else {
+ hci_result = hci_write1(dev, HCI_SYSTEM_EVENT, 1);
+ if (hci_result == TOS_SUCCESS)
+ dev->system_event_supported = 1;
+ }
+
+ if (!dev->info_supported && !dev->system_event_supported) {
+ pr_warn("No hotkey query interface found\n");
+ goto err_remove_filter;
+ }
+
+ error = input_register_device(dev->hotkey_dev);
+ if (error) {
+ pr_info("Unable to register input device\n");
+ goto err_remove_filter;
+ }
+
+ return 0;
+
+ err_remove_filter:
+ if (dev->ntfy_supported)
+ i8042_remove_filter(toshiba_acpi_i8042_filter);
+ err_free_keymap:
+ sparse_keymap_free(dev->hotkey_dev);
+ err_free_dev:
+ input_free_device(dev->hotkey_dev);
+ dev->hotkey_dev = NULL;
+ return error;
+}
+
+static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
+{
+ struct backlight_properties props;
+ int brightness;
+ int ret;
+ bool enabled;
+
+ /*
+ * Some machines don't support the backlight methods at all, and
+ * others support it read-only. Either of these is pretty useless,
+ * so only register the backlight device if the backlight method
+ * supports both reads and writes.
+ */
+ brightness = __get_lcd_brightness(dev);
+ if (brightness < 0)
+ return 0;
+ ret = set_lcd_brightness(dev, brightness);
+ if (ret) {
+ pr_debug("Backlight method is read-only, disabling backlight support\n");
+ return 0;
+ }
+
+ /* Determine whether or not BIOS supports transflective backlight */
+ ret = get_tr_backlight_status(dev, &enabled);
+ dev->tr_backlight_supported = !ret;
+
+ /*
+ * Tell acpi-video-detect code to prefer vendor backlight on all
+ * systems with transflective backlight and on dmi matched systems.
+ */
+ if (dev->tr_backlight_supported ||
+ dmi_check_system(toshiba_vendor_backlight_dmi))
+ acpi_video_dmi_promote_vendor();
+
+ if (acpi_video_backlight_support())
+ return 0;
+
+ /* acpi-video may have loaded before we called dmi_promote_vendor() */
+ acpi_video_unregister_backlight();
+
+ memset(&props, 0, sizeof(props));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
+
+ /* Adding an extra level and having 0 change to transflective mode */
+ if (dev->tr_backlight_supported)
+ props.max_brightness++;
+
+ dev->backlight_dev = backlight_device_register("toshiba",
+ &dev->acpi_dev->dev,
+ dev,
+ &toshiba_backlight_data,
+ &props);
+ if (IS_ERR(dev->backlight_dev)) {
+ ret = PTR_ERR(dev->backlight_dev);
+ pr_err("Could not register toshiba backlight device\n");
+ dev->backlight_dev = NULL;
+ return ret;
+ }
+
+ dev->backlight_dev->props.brightness = brightness;
+ return 0;
+}
+
+static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
+{
+ struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
+
+ remove_toshiba_proc_entries(dev);
+
+ if (dev->sysfs_created)
+ sysfs_remove_group(&dev->acpi_dev->dev.kobj,
+ &toshiba_attr_group);
+
+ if (dev->ntfy_supported) {
+ i8042_remove_filter(toshiba_acpi_i8042_filter);
+ cancel_work_sync(&dev->hotkey_work);
+ }
+
+ if (dev->hotkey_dev) {
+ input_unregister_device(dev->hotkey_dev);
+ sparse_keymap_free(dev->hotkey_dev);
+ }
+
+ if (dev->bt_rfk) {
+ rfkill_unregister(dev->bt_rfk);
+ rfkill_destroy(dev->bt_rfk);
+ }
+
+ backlight_device_unregister(dev->backlight_dev);
+
+ if (dev->illumination_supported)
+ led_classdev_unregister(&dev->led_dev);
+
+ if (dev->kbd_led_registered)
+ led_classdev_unregister(&dev->kbd_led);
+
+ if (dev->eco_supported)
+ led_classdev_unregister(&dev->eco_led);
+
+ if (toshiba_acpi)
+ toshiba_acpi = NULL;
+
+ kfree(dev);
+
+ return 0;
+}
+
+static const char *find_hci_method(acpi_handle handle)
+{
+ if (acpi_has_method(handle, "GHCI"))
+ return "GHCI";
+
+ if (acpi_has_method(handle, "SPFC"))
+ return "SPFC";
+
+ return NULL;
+}
+
+static int toshiba_acpi_add(struct acpi_device *acpi_dev)
+{
+ struct toshiba_acpi_dev *dev;
+ const char *hci_method;
+ u32 special_functions;
+ u32 dummy;
+ bool bt_present;
+ int ret = 0;
+
+ if (toshiba_acpi)
+ return -EBUSY;
+
+ pr_info("Toshiba Laptop ACPI Extras version %s\n",
+ TOSHIBA_ACPI_VERSION);
+
+ hci_method = find_hci_method(acpi_dev->handle);
+ if (!hci_method) {
+ pr_err("HCI interface not found\n");
+ return -ENODEV;
+ }
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+ dev->acpi_dev = acpi_dev;
+ dev->method_hci = hci_method;
+ acpi_dev->driver_data = dev;
+ dev_set_drvdata(&acpi_dev->dev, dev);
+
+ /* Query the BIOS for supported features */
+
+ /*
+ * The "Special Functions" are always supported by the laptops
+ * with the new keyboard layout, query for its presence to help
+ * determine the keymap layout to use.
+ */
+ ret = toshiba_function_keys_get(dev, &special_functions);
+ dev->kbd_function_keys_supported = !ret;
+
+ if (toshiba_acpi_setup_keyboard(dev))
+ pr_info("Unable to activate hotkeys\n");
+
+ mutex_init(&dev->mutex);
+
+ ret = toshiba_acpi_setup_backlight(dev);
+ if (ret)
+ goto error;
+
+ /* Register rfkill switch for Bluetooth */
+ if (hci_get_bt_present(dev, &bt_present) == TOS_SUCCESS && bt_present) {
+ dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
+ &acpi_dev->dev,
+ RFKILL_TYPE_BLUETOOTH,
+ &toshiba_rfk_ops,
+ dev);
+ if (!dev->bt_rfk) {
+ pr_err("unable to allocate rfkill device\n");
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ ret = rfkill_register(dev->bt_rfk);
+ if (ret) {
+ pr_err("unable to register rfkill device\n");
+ rfkill_destroy(dev->bt_rfk);
+ goto error;
+ }
+ }
+
+ if (toshiba_illumination_available(dev)) {
+ dev->led_dev.name = "toshiba::illumination";
+ dev->led_dev.max_brightness = 1;
+ dev->led_dev.brightness_set = toshiba_illumination_set;
+ dev->led_dev.brightness_get = toshiba_illumination_get;
+ if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
+ dev->illumination_supported = 1;
+ }
+
+ if (toshiba_eco_mode_available(dev)) {
+ dev->eco_led.name = "toshiba::eco_mode";
+ dev->eco_led.max_brightness = 1;
+ dev->eco_led.brightness_set = toshiba_eco_mode_set_status;
+ dev->eco_led.brightness_get = toshiba_eco_mode_get_status;
+ if (!led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led))
+ dev->eco_supported = 1;
+ }
+
+ dev->kbd_illum_supported = toshiba_kbd_illum_available(dev);
+ /*
+ * Only register the LED if KBD illumination is supported
+ * and the keyboard backlight operation mode is set to FN-Z
+ */
+ if (dev->kbd_illum_supported && dev->kbd_mode == SCI_KBD_MODE_FNZ) {
+ dev->kbd_led.name = "toshiba::kbd_backlight";
+ dev->kbd_led.max_brightness = 1;
+ dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
+ dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
+ if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led))
+ dev->kbd_led_registered = 1;
+ }
+
+ ret = toshiba_touchpad_get(dev, &dummy);
+ dev->touchpad_supported = !ret;
+
+ ret = toshiba_accelerometer_supported(dev);
+ dev->accelerometer_supported = !ret;
+
+ toshiba_usb_sleep_charge_available(dev);
+
+ ret = toshiba_usb_rapid_charge_get(dev, &dummy);
+ dev->usb_rapid_charge_supported = !ret;
+
+ ret = toshiba_usb_sleep_music_get(dev, &dummy);
+ dev->usb_sleep_music_supported = !ret;
+
+ ret = toshiba_panel_power_on_get(dev, &dummy);
+ dev->panel_power_on_supported = !ret;
+
+ ret = toshiba_usb_three_get(dev, &dummy);
+ dev->usb_three_supported = !ret;
+
+ ret = get_video_status(dev, &dummy);
+ dev->video_supported = !ret;
+
+ ret = get_fan_status(dev, &dummy);
+ dev->fan_supported = !ret;
+
+ /*
+ * Enable the "Special Functions" mode only if they are
+ * supported and if they are activated.
+ */
+ if (dev->kbd_function_keys_supported && special_functions)
+ toshiba_acpi_enable_special_functions(dev);
+
+ ret = sysfs_create_group(&dev->acpi_dev->dev.kobj,
+ &toshiba_attr_group);
+ if (ret) {
+ dev->sysfs_created = 0;
+ goto error;
+ }
+ dev->sysfs_created = !ret;
+
+ create_toshiba_proc_entries(dev);
+
+ toshiba_acpi = dev;
+
+ return 0;
+
+error:
+ toshiba_acpi_remove(acpi_dev);
+ return ret;
+}
+
+static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
+{
+ struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
+ int ret;
+
+ switch (event) {
+ case 0x80: /* Hotkeys and some system events */
+ toshiba_acpi_process_hotkeys(dev);
+ break;
+ case 0x81: /* Dock events */
+ case 0x82:
+ case 0x83:
+ pr_info("Dock event received %x\n", event);
+ break;
+ case 0x88: /* Thermal events */
+ pr_info("Thermal event received\n");
+ break;
+ case 0x8f: /* LID closed */
+ case 0x90: /* LID is closed and Dock has been ejected */
+ break;
+ case 0x8c: /* SATA power events */
+ case 0x8b:
+ pr_info("SATA power event received %x\n", event);
+ break;
+ case 0x92: /* Keyboard backlight mode changed */
+ /* Update sysfs entries */
+ ret = sysfs_update_group(&acpi_dev->dev.kobj,
+ &toshiba_attr_group);
+ if (ret)
+ pr_err("Unable to update sysfs entries\n");
+ break;
+ case 0x85: /* Unknown */
+ case 0x8d: /* Unknown */
+ case 0x8e: /* Unknown */
+ case 0x94: /* Unknown */
+ case 0x95: /* Unknown */
+ default:
+ pr_info("Unknown event received %x\n", event);
+ break;
+ }
+
+ acpi_bus_generate_netlink_event(acpi_dev->pnp.device_class,
+ dev_name(&acpi_dev->dev),
+ event, 0);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int toshiba_acpi_suspend(struct device *device)
+{
+ struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
+ u32 result;
+
+ if (dev->hotkey_dev)
+ result = hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE);
+
+ return 0;
+}
+
+static int toshiba_acpi_resume(struct device *device)
+{
+ struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
+ int error;
+
+ if (dev->hotkey_dev) {
+ error = toshiba_acpi_enable_hotkeys(dev);
+ if (error)
+ pr_info("Unable to re-enable hotkeys\n");
+ }
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(toshiba_acpi_pm,
+ toshiba_acpi_suspend, toshiba_acpi_resume);
+
+static struct acpi_driver toshiba_acpi_driver = {
+ .name = "Toshiba ACPI driver",
+ .owner = THIS_MODULE,
+ .ids = toshiba_device_ids,
+ .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
+ .ops = {
+ .add = toshiba_acpi_add,
+ .remove = toshiba_acpi_remove,
+ .notify = toshiba_acpi_notify,
+ },
+ .drv.pm = &toshiba_acpi_pm,
+};
+
+static int __init toshiba_acpi_init(void)
+{
+ int ret;
+
+ /*
+ * Machines with this WMI guid aren't supported due to bugs in
+ * their AML. This check relies on wmi initializing before
+ * toshiba_acpi to guarantee guids have been identified.
+ */
+ if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
+ return -ENODEV;
+
+ toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
+ if (!toshiba_proc_dir) {
+ pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
+ return -ENODEV;
+ }
+
+ ret = acpi_bus_register_driver(&toshiba_acpi_driver);
+ if (ret) {
+ pr_err("Failed to register ACPI driver: %d\n", ret);
+ remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
+ }
+
+ return ret;
+}
+
+static void __exit toshiba_acpi_exit(void)
+{
+ acpi_bus_unregister_driver(&toshiba_acpi_driver);
+ if (toshiba_proc_dir)
+ remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
+}
+
+module_init(toshiba_acpi_init);
+module_exit(toshiba_acpi_exit);
diff --git a/drivers/platform/x86/toshiba_bluetooth.c b/drivers/platform/x86/toshiba_bluetooth.c
new file mode 100644
index 000000000..249800763
--- /dev/null
+++ b/drivers/platform/x86/toshiba_bluetooth.c
@@ -0,0 +1,204 @@
+/*
+ * Toshiba Bluetooth Enable Driver
+ *
+ * Copyright (C) 2009 Jes Sorensen <Jes.Sorensen@gmail.com>
+ * Copyright (C) 2015 Azael Avalos <coproscefalo@gmail.com>
+ *
+ * Thanks to Matthew Garrett for background info on ACPI innards which
+ * normal people aren't meant to understand :-)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Note the Toshiba Bluetooth RFKill switch seems to be a strange
+ * fish. It only provides a BT event when the switch is flipped to
+ * the 'on' position. When flipping it to 'off', the USB device is
+ * simply pulled away underneath us, without any BT event being
+ * delivered.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/acpi.h>
+
+#define BT_KILLSWITCH_MASK 0x01
+#define BT_PLUGGED_MASK 0x40
+#define BT_POWER_MASK 0x80
+
+MODULE_AUTHOR("Jes Sorensen <Jes.Sorensen@gmail.com>");
+MODULE_DESCRIPTION("Toshiba Laptop ACPI Bluetooth Enable Driver");
+MODULE_LICENSE("GPL");
+
+static int toshiba_bt_rfkill_add(struct acpi_device *device);
+static int toshiba_bt_rfkill_remove(struct acpi_device *device);
+static void toshiba_bt_rfkill_notify(struct acpi_device *device, u32 event);
+
+static const struct acpi_device_id bt_device_ids[] = {
+ { "TOS6205", 0},
+ { "", 0},
+};
+MODULE_DEVICE_TABLE(acpi, bt_device_ids);
+
+#ifdef CONFIG_PM_SLEEP
+static int toshiba_bt_resume(struct device *dev);
+#endif
+static SIMPLE_DEV_PM_OPS(toshiba_bt_pm, NULL, toshiba_bt_resume);
+
+static struct acpi_driver toshiba_bt_rfkill_driver = {
+ .name = "Toshiba BT",
+ .class = "Toshiba",
+ .ids = bt_device_ids,
+ .ops = {
+ .add = toshiba_bt_rfkill_add,
+ .remove = toshiba_bt_rfkill_remove,
+ .notify = toshiba_bt_rfkill_notify,
+ },
+ .owner = THIS_MODULE,
+ .drv.pm = &toshiba_bt_pm,
+};
+
+static int toshiba_bluetooth_present(acpi_handle handle)
+{
+ acpi_status result;
+ u64 bt_present;
+
+ /*
+ * Some Toshiba laptops may have a fake TOS6205 device in
+ * their ACPI BIOS, so query the _STA method to see if there
+ * is really anything there.
+ */
+ result = acpi_evaluate_integer(handle, "_STA", NULL, &bt_present);
+ if (ACPI_FAILURE(result)) {
+ pr_err("ACPI call to query Bluetooth presence failed");
+ return -ENXIO;
+ } else if (!bt_present) {
+ pr_info("Bluetooth device not present\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int toshiba_bluetooth_status(acpi_handle handle)
+{
+ acpi_status result;
+ u64 status;
+
+ result = acpi_evaluate_integer(handle, "BTST", NULL, &status);
+ if (ACPI_FAILURE(result)) {
+ pr_err("Could not get Bluetooth device status\n");
+ return -ENXIO;
+ }
+
+ pr_info("Bluetooth status %llu\n", status);
+
+ return status;
+}
+
+static int toshiba_bluetooth_enable(acpi_handle handle)
+{
+ acpi_status result;
+ bool killswitch;
+ bool powered;
+ bool plugged;
+ int status;
+
+ /*
+ * Query ACPI to verify RFKill switch is set to 'on'.
+ * If not, we return silently, no need to report it as
+ * an error.
+ */
+ status = toshiba_bluetooth_status(handle);
+ if (status < 0)
+ return status;
+
+ killswitch = (status & BT_KILLSWITCH_MASK) ? true : false;
+ powered = (status & BT_POWER_MASK) ? true : false;
+ plugged = (status & BT_PLUGGED_MASK) ? true : false;
+
+ if (!killswitch)
+ return 0;
+ /*
+ * This check ensures to only enable the device if it is powered
+ * off or detached, as some recent devices somehow pass the killswitch
+ * test, causing a loop enabling/disabling the device, see bug 93911.
+ */
+ if (powered || plugged)
+ return 0;
+
+ result = acpi_evaluate_object(handle, "AUSB", NULL, NULL);
+ if (ACPI_FAILURE(result)) {
+ pr_err("Could not attach USB Bluetooth device\n");
+ return -ENXIO;
+ }
+
+ result = acpi_evaluate_object(handle, "BTPO", NULL, NULL);
+ if (ACPI_FAILURE(result)) {
+ pr_err("Could not power ON Bluetooth device\n");
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int toshiba_bluetooth_disable(acpi_handle handle)
+{
+ acpi_status result;
+
+ result = acpi_evaluate_object(handle, "BTPF", NULL, NULL);
+ if (ACPI_FAILURE(result)) {
+ pr_err("Could not power OFF Bluetooth device\n");
+ return -ENXIO;
+ }
+
+ result = acpi_evaluate_object(handle, "DUSB", NULL, NULL);
+ if (ACPI_FAILURE(result)) {
+ pr_err("Could not detach USB Bluetooth device\n");
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static void toshiba_bt_rfkill_notify(struct acpi_device *device, u32 event)
+{
+ toshiba_bluetooth_enable(device->handle);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int toshiba_bt_resume(struct device *dev)
+{
+ return toshiba_bluetooth_enable(to_acpi_device(dev)->handle);
+}
+#endif
+
+static int toshiba_bt_rfkill_add(struct acpi_device *device)
+{
+ int result;
+
+ result = toshiba_bluetooth_present(device->handle);
+ if (result)
+ return result;
+
+ pr_info("Toshiba ACPI Bluetooth device driver\n");
+
+ /* Enable the BT device */
+ result = toshiba_bluetooth_enable(device->handle);
+ if (result)
+ return result;
+
+ return result;
+}
+
+static int toshiba_bt_rfkill_remove(struct acpi_device *device)
+{
+ /* clean up */
+ return toshiba_bluetooth_disable(device->handle);
+}
+
+module_acpi_driver(toshiba_bt_rfkill_driver);
diff --git a/drivers/platform/x86/toshiba_haps.c b/drivers/platform/x86/toshiba_haps.c
new file mode 100644
index 000000000..65300b6a8
--- /dev/null
+++ b/drivers/platform/x86/toshiba_haps.c
@@ -0,0 +1,265 @@
+/*
+ * Toshiba HDD Active Protection Sensor (HAPS) driver
+ *
+ * Copyright (C) 2014 Azael Avalos <coproscefalo@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/acpi.h>
+
+MODULE_AUTHOR("Azael Avalos <coproscefalo@gmail.com>");
+MODULE_DESCRIPTION("Toshiba HDD Active Protection Sensor");
+MODULE_LICENSE("GPL");
+
+struct toshiba_haps_dev {
+ struct acpi_device *acpi_dev;
+
+ int protection_level;
+};
+
+static struct toshiba_haps_dev *toshiba_haps;
+
+/* HAPS functions */
+static int toshiba_haps_reset_protection(acpi_handle handle)
+{
+ acpi_status status;
+
+ status = acpi_evaluate_object(handle, "RSSS", NULL, NULL);
+ if (ACPI_FAILURE(status)) {
+ pr_err("Unable to reset the HDD protection\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int toshiba_haps_protection_level(acpi_handle handle, int level)
+{
+ acpi_status status;
+
+ status = acpi_execute_simple_method(handle, "PTLV", level);
+ if (ACPI_FAILURE(status)) {
+ pr_err("Error while setting the protection level\n");
+ return -EIO;
+ }
+
+ pr_info("HDD protection level set to: %d\n", level);
+
+ return 0;
+}
+
+/* sysfs files */
+static ssize_t protection_level_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct toshiba_haps_dev *haps = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%i\n", haps->protection_level);
+}
+
+static ssize_t protection_level_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_haps_dev *haps = dev_get_drvdata(dev);
+ int level, ret;
+
+ if (sscanf(buf, "%d", &level) != 1 || level < 0 || level > 3)
+ return -EINVAL;
+
+ /* Set the sensor level.
+ * Acceptable levels are:
+ * 0 - Disabled | 1 - Low | 2 - Medium | 3 - High
+ */
+ ret = toshiba_haps_protection_level(haps->acpi_dev->handle, level);
+ if (ret != 0)
+ return ret;
+
+ haps->protection_level = level;
+
+ return count;
+}
+
+static ssize_t reset_protection_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_haps_dev *haps = dev_get_drvdata(dev);
+ int reset, ret;
+
+ if (sscanf(buf, "%d", &reset) != 1 || reset != 1)
+ return -EINVAL;
+
+ /* Reset the protection interface */
+ ret = toshiba_haps_reset_protection(haps->acpi_dev->handle);
+ if (ret != 0)
+ return ret;
+
+ return count;
+}
+
+static DEVICE_ATTR(protection_level, S_IRUGO | S_IWUSR,
+ protection_level_show, protection_level_store);
+static DEVICE_ATTR(reset_protection, S_IWUSR, NULL, reset_protection_store);
+
+static struct attribute *haps_attributes[] = {
+ &dev_attr_protection_level.attr,
+ &dev_attr_reset_protection.attr,
+ NULL,
+};
+
+static struct attribute_group haps_attr_group = {
+ .attrs = haps_attributes,
+};
+
+/*
+ * ACPI stuff
+ */
+static void toshiba_haps_notify(struct acpi_device *device, u32 event)
+{
+ pr_info("Received event: 0x%x", event);
+
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ dev_name(&device->dev),
+ event, 0);
+}
+
+static int toshiba_haps_remove(struct acpi_device *device)
+{
+ sysfs_remove_group(&device->dev.kobj, &haps_attr_group);
+
+ if (toshiba_haps)
+ toshiba_haps = NULL;
+
+ return 0;
+}
+
+/* Helper function */
+static int toshiba_haps_available(acpi_handle handle)
+{
+ acpi_status status;
+ u64 hdd_present;
+
+ /*
+ * A non existent device as well as having (only)
+ * Solid State Drives can cause the call to fail.
+ */
+ status = acpi_evaluate_integer(handle, "_STA", NULL,
+ &hdd_present);
+ if (ACPI_FAILURE(status) || !hdd_present) {
+ pr_info("HDD protection not available or using SSD\n");
+ return 0;
+ }
+
+ return 1;
+}
+
+static int toshiba_haps_add(struct acpi_device *acpi_dev)
+{
+ struct toshiba_haps_dev *haps;
+ int ret;
+
+ if (toshiba_haps)
+ return -EBUSY;
+
+ if (!toshiba_haps_available(acpi_dev->handle))
+ return -ENODEV;
+
+ pr_info("Toshiba HDD Active Protection Sensor device\n");
+
+ haps = kzalloc(sizeof(struct toshiba_haps_dev), GFP_KERNEL);
+ if (!haps)
+ return -ENOMEM;
+
+ haps->acpi_dev = acpi_dev;
+ haps->protection_level = 2;
+ acpi_dev->driver_data = haps;
+ dev_set_drvdata(&acpi_dev->dev, haps);
+
+ /* Set the protection level, currently at level 2 (Medium) */
+ ret = toshiba_haps_protection_level(acpi_dev->handle, 2);
+ if (ret != 0)
+ return ret;
+
+ ret = sysfs_create_group(&acpi_dev->dev.kobj, &haps_attr_group);
+ if (ret)
+ return ret;
+
+ toshiba_haps = haps;
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int toshiba_haps_suspend(struct device *device)
+{
+ struct toshiba_haps_dev *haps;
+ int ret;
+
+ haps = acpi_driver_data(to_acpi_device(device));
+
+ /* Deactivate the protection on suspend */
+ ret = toshiba_haps_protection_level(haps->acpi_dev->handle, 0);
+
+ return ret;
+}
+
+static int toshiba_haps_resume(struct device *device)
+{
+ struct toshiba_haps_dev *haps;
+ int ret;
+
+ haps = acpi_driver_data(to_acpi_device(device));
+
+ /* Set the stored protection level */
+ ret = toshiba_haps_protection_level(haps->acpi_dev->handle,
+ haps->protection_level);
+
+ /* Reset the protection on resume */
+ ret = toshiba_haps_reset_protection(haps->acpi_dev->handle);
+ if (ret != 0)
+ return ret;
+
+ return ret;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(toshiba_haps_pm,
+ toshiba_haps_suspend, toshiba_haps_resume);
+
+static const struct acpi_device_id haps_device_ids[] = {
+ {"TOS620A", 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, haps_device_ids);
+
+static struct acpi_driver toshiba_haps_driver = {
+ .name = "Toshiba HAPS",
+ .owner = THIS_MODULE,
+ .ids = haps_device_ids,
+ .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
+ .ops = {
+ .add = toshiba_haps_add,
+ .remove = toshiba_haps_remove,
+ .notify = toshiba_haps_notify,
+ },
+ .drv.pm = &toshiba_haps_pm,
+};
+
+module_acpi_driver(toshiba_haps_driver);
diff --git a/drivers/platform/x86/tp_smapi.c b/drivers/platform/x86/tp_smapi.c
new file mode 100644
index 000000000..747c3d72b
--- /dev/null
+++ b/drivers/platform/x86/tp_smapi.c
@@ -0,0 +1,1493 @@
+/*
+ * tp_smapi.c - ThinkPad SMAPI support
+ *
+ * This driver exposes some features of the System Management Application
+ * Program Interface (SMAPI) BIOS found on ThinkPad laptops. It works on
+ * models in which the SMAPI BIOS runs in SMM and is invoked by writing
+ * to the APM control port 0xB2.
+ * It also exposes battery status information, obtained from the ThinkPad
+ * embedded controller (via the thinkpad_ec module).
+ * Ancient ThinkPad models use a different interface, supported by the
+ * "thinkpad" module from "tpctl".
+ *
+ * Many of the battery status values obtained from the EC simply mirror
+ * values provided by the battery's Smart Battery System (SBS) interface, so
+ * their meaning is defined by the Smart Battery Data Specification (see
+ * http://sbs-forum.org/specs/sbdat110.pdf). References to this SBS spec
+ * are given in the code where relevant.
+ *
+ * Copyright (C) 2006 Shem Multinymous <multinymous@gmail.com>.
+ * SMAPI access code based on the mwave driver by Mike Sullivan.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/mc146818rtc.h> /* CMOS defines */
+#include <linux/delay.h>
+#include <linux/version.h>
+#include <linux/thinkpad_ec.h>
+#include <linux/platform_device.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+#define TP_VERSION "0.41"
+#define TP_DESC "ThinkPad SMAPI Support"
+#define TP_DIR "smapi"
+
+MODULE_AUTHOR("Shem Multinymous");
+MODULE_DESCRIPTION(TP_DESC);
+MODULE_VERSION(TP_VERSION);
+MODULE_LICENSE("GPL");
+
+static struct platform_device *pdev;
+
+static int tp_debug;
+module_param_named(debug, tp_debug, int, 0600);
+MODULE_PARM_DESC(debug, "Debug level (0=off, 1=on)");
+
+/* A few macros for printk()ing: */
+#define TPRINTK(level, fmt, args...) \
+ dev_printk(level, &(pdev->dev), "%s: " fmt "\n", __func__, ## args)
+#define DPRINTK(fmt, args...) \
+ do { if (tp_debug) TPRINTK(KERN_DEBUG, fmt, ## args); } while (0)
+
+/*********************************************************************
+ * SMAPI interface
+ */
+
+/* SMAPI functions (register BX when making the SMM call). */
+#define SMAPI_GET_INHIBIT_CHARGE 0x2114
+#define SMAPI_SET_INHIBIT_CHARGE 0x2115
+#define SMAPI_GET_THRESH_START 0x2116
+#define SMAPI_SET_THRESH_START 0x2117
+#define SMAPI_GET_FORCE_DISCHARGE 0x2118
+#define SMAPI_SET_FORCE_DISCHARGE 0x2119
+#define SMAPI_GET_THRESH_STOP 0x211a
+#define SMAPI_SET_THRESH_STOP 0x211b
+
+/* SMAPI error codes (see ThinkPad 770 Technical Reference Manual p.83 at
+ http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=PFAN-3TUQQD */
+#define SMAPI_RETCODE_EOF 0xff
+static struct { u8 rc; char *msg; int ret; } smapi_retcode[] =
+{
+ {0x00, "OK", 0},
+ {0x53, "SMAPI function is not available", -ENXIO},
+ {0x81, "Invalid parameter", -EINVAL},
+ {0x86, "Function is not supported by SMAPI BIOS", -EOPNOTSUPP},
+ {0x90, "System error", -EIO},
+ {0x91, "System is invalid", -EIO},
+ {0x92, "System is busy, -EBUSY"},
+ {0xa0, "Device error (disk read error)", -EIO},
+ {0xa1, "Device is busy", -EBUSY},
+ {0xa2, "Device is not attached", -ENXIO},
+ {0xa3, "Device is disbled", -EIO},
+ {0xa4, "Request parameter is out of range", -EINVAL},
+ {0xa5, "Request parameter is not accepted", -EINVAL},
+ {0xa6, "Transient error", -EBUSY}, /* ? */
+ {SMAPI_RETCODE_EOF, "Unknown error code", -EIO}
+};
+
+
+#define SMAPI_MAX_RETRIES 10
+#define SMAPI_PORT2 0x4F /* fixed port, meaning unclear */
+static unsigned short smapi_port; /* APM control port, normally 0xB2 */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
+static DECLARE_MUTEX(smapi_mutex);
+#else
+static DEFINE_SEMAPHORE(smapi_mutex);
+#endif
+
+/**
+ * find_smapi_port - read SMAPI port from NVRAM
+ */
+static int __init find_smapi_port(void)
+{
+ u16 smapi_id = 0;
+ unsigned short port = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&rtc_lock, flags);
+ smapi_id = CMOS_READ(0x7C);
+ smapi_id |= (CMOS_READ(0x7D) << 8);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+
+ if (smapi_id != 0x5349) {
+ printk(KERN_ERR "SMAPI not supported (ID=0x%x)\n", smapi_id);
+ return -ENXIO;
+ }
+ spin_lock_irqsave(&rtc_lock, flags);
+ port = CMOS_READ(0x7E);
+ port |= (CMOS_READ(0x7F) << 8);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+ if (port == 0) {
+ printk(KERN_ERR "unable to read SMAPI port number\n");
+ return -ENXIO;
+ }
+ return port;
+}
+
+/**
+ * smapi_request - make a SMAPI call
+ * @inEBX, @inECX, @inEDI, @inESI: input registers
+ * @outEBX, @outECX, @outEDX, @outEDI, @outESI: outputs registers
+ * @msg: textual error message
+ * Invokes the SMAPI SMBIOS with the given input and outpu args.
+ * All outputs are optional (can be %NULL).
+ * Returns 0 when successful, and a negative errno constant
+ * (see smapi_retcode above) upon failure.
+ */
+static int smapi_request(u32 inEBX, u32 inECX,
+ u32 inEDI, u32 inESI,
+ u32 *outEBX, u32 *outECX, u32 *outEDX,
+ u32 *outEDI, u32 *outESI, const char **msg)
+{
+ int ret = 0;
+ int i;
+ int retries;
+ u8 rc;
+ /* Must use local vars for output regs, due to reg pressure. */
+ u32 tmpEAX, tmpEBX, tmpECX, tmpEDX, tmpEDI, tmpESI;
+
+ for (retries = 0; retries < SMAPI_MAX_RETRIES; ++retries) {
+ DPRINTK("req_in: BX=%x CX=%x DI=%x SI=%x",
+ inEBX, inECX, inEDI, inESI);
+
+ /* SMAPI's SMBIOS call and thinkpad_ec end up using use
+ * different interfaces to the same chip, so play it safe. */
+ ret = thinkpad_ec_lock();
+ if (ret)
+ return ret;
+
+ __asm__ __volatile__(
+ "movl $0x00005380,%%eax\n\t"
+ "movl %6,%%ebx\n\t"
+ "movl %7,%%ecx\n\t"
+ "movl %8,%%edi\n\t"
+ "movl %9,%%esi\n\t"
+ "xorl %%edx,%%edx\n\t"
+ "movw %10,%%dx\n\t"
+ "out %%al,%%dx\n\t" /* trigger SMI to SMBIOS */
+ "out %%al,$0x4F\n\t"
+ "movl %%eax,%0\n\t"
+ "movl %%ebx,%1\n\t"
+ "movl %%ecx,%2\n\t"
+ "movl %%edx,%3\n\t"
+ "movl %%edi,%4\n\t"
+ "movl %%esi,%5\n\t"
+ :"=m"(tmpEAX),
+ "=m"(tmpEBX),
+ "=m"(tmpECX),
+ "=m"(tmpEDX),
+ "=m"(tmpEDI),
+ "=m"(tmpESI)
+ :"m"(inEBX), "m"(inECX), "m"(inEDI), "m"(inESI),
+ "m"((u16)smapi_port)
+ :"%eax", "%ebx", "%ecx", "%edx", "%edi",
+ "%esi");
+
+ thinkpad_ec_invalidate();
+ thinkpad_ec_unlock();
+
+ /* Don't let the next SMAPI access happen too quickly,
+ * may case problems. (We're hold smapi_mutex). */
+ msleep(50);
+
+ if (outEBX) *outEBX = tmpEBX;
+ if (outECX) *outECX = tmpECX;
+ if (outEDX) *outEDX = tmpEDX;
+ if (outESI) *outESI = tmpESI;
+ if (outEDI) *outEDI = tmpEDI;
+
+ /* Look up error code */
+ rc = (tmpEAX>>8)&0xFF;
+ for (i = 0; smapi_retcode[i].rc != SMAPI_RETCODE_EOF &&
+ smapi_retcode[i].rc != rc; ++i) {}
+ ret = smapi_retcode[i].ret;
+ if (msg)
+ *msg = smapi_retcode[i].msg;
+
+ DPRINTK("req_out: AX=%x BX=%x CX=%x DX=%x DI=%x SI=%x r=%d",
+ tmpEAX, tmpEBX, tmpECX, tmpEDX, tmpEDI, tmpESI, ret);
+ if (ret)
+ TPRINTK(KERN_NOTICE, "SMAPI error: %s (func=%x)",
+ smapi_retcode[i].msg, inEBX);
+
+ if (ret != -EBUSY)
+ return ret;
+ }
+ return ret;
+}
+
+/* Convenience wrapper: discard output arguments */
+static int smapi_write(u32 inEBX, u32 inECX,
+ u32 inEDI, u32 inESI, const char **msg)
+{
+ return smapi_request(inEBX, inECX, inEDI, inESI,
+ NULL, NULL, NULL, NULL, NULL, msg);
+}
+
+
+/*********************************************************************
+ * Specific SMAPI services
+ * All of these functions return 0 upon success, and a negative errno
+ * constant (see smapi_retcode) on failure.
+ */
+
+enum thresh_type {
+ THRESH_STOP = 0, /* the code assumes this is 0 for brevity */
+ THRESH_START
+};
+#define THRESH_NAME(which) ((which == THRESH_START) ? "start" : "stop")
+
+/**
+ * __get_real_thresh - read battery charge start/stop threshold from SMAPI
+ * @bat: battery number (0 or 1)
+ * @which: THRESH_START or THRESH_STOP
+ * @thresh: 1..99, 0=default 1..99, 0=default (pass this as-is to SMAPI)
+ * @outEDI: some additional state that needs to be preserved, meaning unknown
+ * @outESI: some additional state that needs to be preserved, meaning unknown
+ */
+static int __get_real_thresh(int bat, enum thresh_type which, int *thresh,
+ u32 *outEDI, u32 *outESI)
+{
+ u32 ebx = (which == THRESH_START) ? SMAPI_GET_THRESH_START
+ : SMAPI_GET_THRESH_STOP;
+ u32 ecx = (bat+1)<<8;
+ const char *msg;
+ int ret = smapi_request(ebx, ecx, 0, 0, NULL,
+ &ecx, NULL, outEDI, outESI, &msg);
+ if (ret) {
+ TPRINTK(KERN_NOTICE, "cannot get %s_thresh of bat=%d: %s",
+ THRESH_NAME(which), bat, msg);
+ return ret;
+ }
+ if (!(ecx&0x00000100)) {
+ TPRINTK(KERN_NOTICE, "cannot get %s_thresh of bat=%d: ecx=0%x",
+ THRESH_NAME(which), bat, ecx);
+ return -EIO;
+ }
+ if (thresh)
+ *thresh = ecx&0xFF;
+ return 0;
+}
+
+/**
+ * get_real_thresh - read battery charge start/stop threshold from SMAPI
+ * @bat: battery number (0 or 1)
+ * @which: THRESH_START or THRESH_STOP
+ * @thresh: 1..99, 0=default (passes as-is to SMAPI)
+ */
+static int get_real_thresh(int bat, enum thresh_type which, int *thresh)
+{
+ return __get_real_thresh(bat, which, thresh, NULL, NULL);
+}
+
+/**
+ * set_real_thresh - write battery start/top charge threshold to SMAPI
+ * @bat: battery number (0 or 1)
+ * @which: THRESH_START or THRESH_STOP
+ * @thresh: 1..99, 0=default (passes as-is to SMAPI)
+ */
+static int set_real_thresh(int bat, enum thresh_type which, int thresh)
+{
+ u32 ebx = (which == THRESH_START) ? SMAPI_SET_THRESH_START
+ : SMAPI_SET_THRESH_STOP;
+ u32 ecx = ((bat+1)<<8) + thresh;
+ u32 getDI, getSI;
+ const char *msg;
+ int ret;
+
+ /* verify read before writing */
+ ret = __get_real_thresh(bat, which, NULL, &getDI, &getSI);
+ if (ret)
+ return ret;
+
+ ret = smapi_write(ebx, ecx, getDI, getSI, &msg);
+ if (ret)
+ TPRINTK(KERN_NOTICE, "set %s to %d for bat=%d failed: %s",
+ THRESH_NAME(which), thresh, bat, msg);
+ else
+ TPRINTK(KERN_INFO, "set %s to %d for bat=%d",
+ THRESH_NAME(which), thresh, bat);
+ return ret;
+}
+
+/**
+ * __get_inhibit_charge_minutes - get inhibit charge period from SMAPI
+ * @bat: battery number (0 or 1)
+ * @minutes: period in minutes (1..65535 minutes, 0=disabled)
+ * @outECX: some additional state that needs to be preserved, meaning unknown
+ * Note that @minutes is the originally set value, it does not count down.
+ */
+static int __get_inhibit_charge_minutes(int bat, int *minutes, u32 *outECX)
+{
+ u32 ecx = (bat+1)<<8;
+ u32 esi;
+ const char *msg;
+ int ret = smapi_request(SMAPI_GET_INHIBIT_CHARGE, ecx, 0, 0,
+ NULL, &ecx, NULL, NULL, &esi, &msg);
+ if (ret) {
+ TPRINTK(KERN_NOTICE, "failed for bat=%d: %s", bat, msg);
+ return ret;
+ }
+ if (!(ecx&0x0100)) {
+ TPRINTK(KERN_NOTICE, "bad ecx=0x%x for bat=%d", ecx, bat);
+ return -EIO;
+ }
+ if (minutes)
+ *minutes = (ecx&0x0001)?esi:0;
+ if (outECX)
+ *outECX = ecx;
+ return 0;
+}
+
+/**
+ * get_inhibit_charge_minutes - get inhibit charge period from SMAPI
+ * @bat: battery number (0 or 1)
+ * @minutes: period in minutes (1..65535 minutes, 0=disabled)
+ * Note that @minutes is the originally set value, it does not count down.
+ */
+static int get_inhibit_charge_minutes(int bat, int *minutes)
+{
+ return __get_inhibit_charge_minutes(bat, minutes, NULL);
+}
+
+/**
+ * set_inhibit_charge_minutes - write inhibit charge period to SMAPI
+ * @bat: battery number (0 or 1)
+ * @minutes: period in minutes (1..65535 minutes, 0=disabled)
+ */
+static int set_inhibit_charge_minutes(int bat, int minutes)
+{
+ u32 ecx;
+ const char *msg;
+ int ret;
+
+ /* verify read before writing */
+ ret = __get_inhibit_charge_minutes(bat, NULL, &ecx);
+ if (ret)
+ return ret;
+
+ ecx = ((bat+1)<<8) | (ecx&0x00FE) | (minutes > 0 ? 0x0001 : 0x0000);
+ if (minutes > 0xFFFF)
+ minutes = 0xFFFF;
+ ret = smapi_write(SMAPI_SET_INHIBIT_CHARGE, ecx, 0, minutes, &msg);
+ if (ret)
+ TPRINTK(KERN_NOTICE,
+ "set to %d failed for bat=%d: %s", minutes, bat, msg);
+ else
+ TPRINTK(KERN_INFO, "set to %d for bat=%d\n", minutes, bat);
+ return ret;
+}
+
+
+/**
+ * get_force_discharge - get status of forced discharging from SMAPI
+ * @bat: battery number (0 or 1)
+ * @enabled: 1 if forced discharged is enabled, 0 if not
+ */
+static int get_force_discharge(int bat, int *enabled)
+{
+ u32 ecx = (bat+1)<<8;
+ const char *msg;
+ int ret = smapi_request(SMAPI_GET_FORCE_DISCHARGE, ecx, 0, 0,
+ NULL, &ecx, NULL, NULL, NULL, &msg);
+ if (ret) {
+ TPRINTK(KERN_NOTICE, "failed for bat=%d: %s", bat, msg);
+ return ret;
+ }
+ *enabled = (!(ecx&0x00000100) && (ecx&0x00000001))?1:0;
+ return 0;
+}
+
+/**
+ * set_force_discharge - write status of forced discharging to SMAPI
+ * @bat: battery number (0 or 1)
+ * @enabled: 1 if forced discharged is enabled, 0 if not
+ */
+static int set_force_discharge(int bat, int enabled)
+{
+ u32 ecx = (bat+1)<<8;
+ const char *msg;
+ int ret = smapi_request(SMAPI_GET_FORCE_DISCHARGE, ecx, 0, 0,
+ NULL, &ecx, NULL, NULL, NULL, &msg);
+ if (ret) {
+ TPRINTK(KERN_NOTICE, "get failed for bat=%d: %s", bat, msg);
+ return ret;
+ }
+ if (ecx&0x00000100) {
+ TPRINTK(KERN_NOTICE, "cannot force discharge bat=%d", bat);
+ return -EIO;
+ }
+
+ ecx = ((bat+1)<<8) | (ecx&0x000000FA) | (enabled?0x00000001:0);
+ ret = smapi_write(SMAPI_SET_FORCE_DISCHARGE, ecx, 0, 0, &msg);
+ if (ret)
+ TPRINTK(KERN_NOTICE, "set to %d failed for bat=%d: %s",
+ enabled, bat, msg);
+ else
+ TPRINTK(KERN_INFO, "set to %d for bat=%d", enabled, bat);
+ return ret;
+}
+
+
+/*********************************************************************
+ * Wrappers to threshold-related SMAPI functions, which handle default
+ * thresholds and related quirks.
+ */
+
+/* Minimum, default and minimum difference for battery charging thresholds: */
+#define MIN_THRESH_DELTA 4 /* Min delta between start and stop thresh */
+#define MIN_THRESH_START 2
+#define MAX_THRESH_START (100-MIN_THRESH_DELTA)
+#define MIN_THRESH_STOP (MIN_THRESH_START + MIN_THRESH_DELTA)
+#define MAX_THRESH_STOP 100
+#define DEFAULT_THRESH_START MAX_THRESH_START
+#define DEFAULT_THRESH_STOP MAX_THRESH_STOP
+
+/* The GUI of IBM's Battery Maximizer seems to show a start threshold that
+ * is 1 more than the value we set/get via SMAPI. Since the threshold is
+ * maintained across reboot, this can be confusing. So we kludge our
+ * interface for interoperability: */
+#define BATMAX_FIX 1
+
+/* Get charge start/stop threshold (1..100),
+ * substituting default values if needed and applying BATMAT_FIX. */
+static int get_thresh(int bat, enum thresh_type which, int *thresh)
+{
+ int ret = get_real_thresh(bat, which, thresh);
+ if (ret)
+ return ret;
+ if (*thresh == 0)
+ *thresh = (which == THRESH_START) ? DEFAULT_THRESH_START
+ : DEFAULT_THRESH_STOP;
+ else if (which == THRESH_START)
+ *thresh += BATMAX_FIX;
+ return 0;
+}
+
+
+/* Set charge start/stop threshold (1..100),
+ * substituting default values if needed and applying BATMAT_FIX. */
+static int set_thresh(int bat, enum thresh_type which, int thresh)
+{
+ if (which == THRESH_STOP && thresh == DEFAULT_THRESH_STOP)
+ thresh = 0; /* 100 is out of range, but default means 100 */
+ if (which == THRESH_START)
+ thresh -= BATMAX_FIX;
+ return set_real_thresh(bat, which, thresh);
+}
+
+/*********************************************************************
+ * ThinkPad embedded controller readout and basic functions
+ */
+
+/**
+ * read_tp_ec_row - read data row from the ThinkPad embedded controller
+ * @arg0: EC command code
+ * @bat: battery number, 0 or 1
+ * @j: the byte value to be used for "junk" (unused) input/outputs
+ * @dataval: result vector
+ */
+static int read_tp_ec_row(u8 arg0, int bat, u8 j, u8 *dataval)
+{
+ int ret;
+ const struct thinkpad_ec_row args = { .mask = 0xFFFF,
+ .val = {arg0, j,j,j,j,j,j,j,j,j,j,j,j,j,j, (u8)bat} };
+ struct thinkpad_ec_row data = { .mask = 0xFFFF };
+
+ ret = thinkpad_ec_lock();
+ if (ret)
+ return ret;
+ ret = thinkpad_ec_read_row(&args, &data);
+ thinkpad_ec_unlock();
+ memcpy(dataval, &data.val, TP_CONTROLLER_ROW_LEN);
+ return ret;
+}
+
+/**
+ * power_device_present - check for presence of battery or AC power
+ * @bat: 0 for battery 0, 1 for battery 1, otherwise AC power
+ * Returns 1 if present, 0 if not present, negative if error.
+ */
+static int power_device_present(int bat)
+{
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ u8 test;
+ int ret = read_tp_ec_row(1, bat, 0, row);
+ if (ret)
+ return ret;
+ switch (bat) {
+ case 0: test = 0x40; break; /* battery 0 */
+ case 1: test = 0x20; break; /* battery 1 */
+ default: test = 0x80; /* AC power */
+ }
+ return (row[0] & test) ? 1 : 0;
+}
+
+/**
+ * bat_has_status - check if battery can report detailed status
+ * @bat: 0 for battery 0, 1 for battery 1
+ * Returns 1 if yes, 0 if no, negative if error.
+ */
+static int bat_has_status(int bat)
+{
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ int ret = read_tp_ec_row(1, bat, 0, row);
+ if (ret)
+ return ret;
+ if ((row[0] & (bat?0x20:0x40)) == 0) /* no battery */
+ return 0;
+ if ((row[1] & (0x60)) == 0) /* no status */
+ return 0;
+ return 1;
+}
+
+/**
+ * get_tp_ec_bat_16 - read a 16-bit value from EC battery status data
+ * @arg0: first argument to EC
+ * @off: offset in row returned from EC
+ * @bat: battery (0 or 1)
+ * @val: the 16-bit value obtained
+ * Returns nonzero on error.
+ */
+static int get_tp_ec_bat_16(u8 arg0, int offset, int bat, u16 *val)
+{
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ int ret;
+ if (bat_has_status(bat) != 1)
+ return -ENXIO;
+ ret = read_tp_ec_row(arg0, bat, 0, row);
+ if (ret)
+ return ret;
+ *val = *(u16 *)(row+offset);
+ return 0;
+}
+
+/*********************************************************************
+ * sysfs attributes for batteries -
+ * definitions and helper functions
+ */
+
+/* A custom device attribute struct which holds a battery number */
+struct bat_device_attribute {
+ struct device_attribute dev_attr;
+ int bat;
+};
+
+/**
+ * attr_get_bat - get the battery to which the attribute belongs
+ */
+static int attr_get_bat(struct device_attribute *attr)
+{
+ return container_of(attr, struct bat_device_attribute, dev_attr)->bat;
+}
+
+/**
+ * show_tp_ec_bat_u16 - show an unsigned 16-bit battery attribute
+ * @arg0: specified 1st argument of EC raw to read
+ * @offset: byte offset in EC raw data
+ * @mul: correction factor to multiply by
+ * @na_msg: string to output is value not available (0xFFFFFFFF)
+ * @attr: battery attribute
+ * @buf: output buffer
+ * The 16-bit value is read from the EC, treated as unsigned,
+ * transformed as x->mul*x, and printed to the buffer.
+ * If the value is 0xFFFFFFFF and na_msg!=%NULL, na_msg is printed instead.
+ */
+static ssize_t show_tp_ec_bat_u16(u8 arg0, int offset, int mul,
+ const char *na_msg,
+ struct device_attribute *attr, char *buf)
+{
+ u16 val;
+ int ret = get_tp_ec_bat_16(arg0, offset, attr_get_bat(attr), &val);
+ if (ret)
+ return ret;
+ if (na_msg && val == 0xFFFF)
+ return sprintf(buf, "%s\n", na_msg);
+ else
+ return sprintf(buf, "%u\n", mul*(unsigned int)val);
+}
+
+/**
+ * show_tp_ec_bat_s16 - show an signed 16-bit battery attribute
+ * @arg0: specified 1st argument of EC raw to read
+ * @offset: byte offset in EC raw data
+ * @mul: correction factor to multiply by
+ * @add: correction term to add after multiplication
+ * @attr: battery attribute
+ * @buf: output buffer
+ * The 16-bit value is read from the EC, treated as signed,
+ * transformed as x->mul*x+add, and printed to the buffer.
+ */
+static ssize_t show_tp_ec_bat_s16(u8 arg0, int offset, int mul, int add,
+ struct device_attribute *attr, char *buf)
+{
+ u16 val;
+ int ret = get_tp_ec_bat_16(arg0, offset, attr_get_bat(attr), &val);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%d\n", mul*(s16)val+add);
+}
+
+/**
+ * show_tp_ec_bat_str - show a string from EC battery status data
+ * @arg0: specified 1st argument of EC raw to read
+ * @offset: byte offset in EC raw data
+ * @maxlen: maximum string length
+ * @attr: battery attribute
+ * @buf: output buffer
+ */
+static ssize_t show_tp_ec_bat_str(u8 arg0, int offset, int maxlen,
+ struct device_attribute *attr, char *buf)
+{
+ int bat = attr_get_bat(attr);
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ int ret;
+ if (bat_has_status(bat) != 1)
+ return -ENXIO;
+ ret = read_tp_ec_row(arg0, bat, 0, row);
+ if (ret)
+ return ret;
+ strncpy(buf, (char *)row+offset, maxlen);
+ buf[maxlen] = 0;
+ strcat(buf, "\n");
+ return strlen(buf);
+}
+
+/**
+ * show_tp_ec_bat_power - show a power readout from EC battery status data
+ * @arg0: specified 1st argument of EC raw to read
+ * @offV: byte offset of voltage in EC raw data
+ * @offI: byte offset of current in EC raw data
+ * @attr: battery attribute
+ * @buf: output buffer
+ * Computes the power as current*voltage from the two given readout offsets.
+ */
+static ssize_t show_tp_ec_bat_power(u8 arg0, int offV, int offI,
+ struct device_attribute *attr, char *buf)
+{
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ int milliamp, millivolt, ret;
+ int bat = attr_get_bat(attr);
+ if (bat_has_status(bat) != 1)
+ return -ENXIO;
+ ret = read_tp_ec_row(1, bat, 0, row);
+ if (ret)
+ return ret;
+ millivolt = *(u16 *)(row+offV);
+ milliamp = *(s16 *)(row+offI);
+ return sprintf(buf, "%d\n", milliamp*millivolt/1000); /* units: mW */
+}
+
+/**
+ * show_tp_ec_bat_date - decode and show a date from EC battery status data
+ * @arg0: specified 1st argument of EC raw to read
+ * @offset: byte offset in EC raw data
+ * @attr: battery attribute
+ * @buf: output buffer
+ */
+static ssize_t show_tp_ec_bat_date(u8 arg0, int offset,
+ struct device_attribute *attr, char *buf)
+{
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ u16 v;
+ int ret;
+ int day, month, year;
+ int bat = attr_get_bat(attr);
+ if (bat_has_status(bat) != 1)
+ return -ENXIO;
+ ret = read_tp_ec_row(arg0, bat, 0, row);
+ if (ret)
+ return ret;
+
+ /* Decode bit-packed: v = day | (month<<5) | ((year-1980)<<9) */
+ v = *(u16 *)(row+offset);
+ day = v & 0x1F;
+ month = (v >> 5) & 0xF;
+ year = (v >> 9) + 1980;
+
+ return sprintf(buf, "%04d-%02d-%02d\n", year, month, day);
+}
+
+
+/*********************************************************************
+ * sysfs attribute I/O for batteries -
+ * the actual attribute show/store functions
+ */
+
+static ssize_t show_battery_start_charge_thresh(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int thresh;
+ int bat = attr_get_bat(attr);
+ int ret = get_thresh(bat, THRESH_START, &thresh);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%d\n", thresh); /* units: percent */
+}
+
+static ssize_t show_battery_stop_charge_thresh(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int thresh;
+ int bat = attr_get_bat(attr);
+ int ret = get_thresh(bat, THRESH_STOP, &thresh);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%d\n", thresh); /* units: percent */
+}
+
+/**
+ * store_battery_start_charge_thresh - store battery_start_charge_thresh attr
+ * Since this is a kernel<->user interface, we ensure a valid state for
+ * the hardware. We do this by clamping the requested threshold to the
+ * valid range and, if necessary, moving the other threshold so that
+ * it's MIN_THRESH_DELTA away from this one.
+ */
+static ssize_t store_battery_start_charge_thresh(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int thresh, other_thresh, ret;
+ int bat = attr_get_bat(attr);
+
+ if (sscanf(buf, "%d", &thresh) != 1 || thresh < 1 || thresh > 100)
+ return -EINVAL;
+
+ if (thresh < MIN_THRESH_START) /* clamp up to MIN_THRESH_START */
+ thresh = MIN_THRESH_START;
+ if (thresh > MAX_THRESH_START) /* clamp down to MAX_THRESH_START */
+ thresh = MAX_THRESH_START;
+
+ down(&smapi_mutex);
+ ret = get_thresh(bat, THRESH_STOP, &other_thresh);
+ if (ret != -EOPNOTSUPP && ret != -ENXIO) {
+ if (ret) /* other threshold is set? */
+ goto out;
+ ret = get_real_thresh(bat, THRESH_START, NULL);
+ if (ret) /* this threshold is set? */
+ goto out;
+ if (other_thresh < thresh+MIN_THRESH_DELTA) {
+ /* move other thresh to keep it above this one */
+ ret = set_thresh(bat, THRESH_STOP,
+ thresh+MIN_THRESH_DELTA);
+ if (ret)
+ goto out;
+ }
+ }
+ ret = set_thresh(bat, THRESH_START, thresh);
+out:
+ up(&smapi_mutex);
+ return count;
+
+}
+
+/**
+ * store_battery_stop_charge_thresh - store battery_stop_charge_thresh attr
+ * Since this is a kernel<->user interface, we ensure a valid state for
+ * the hardware. We do this by clamping the requested threshold to the
+ * valid range and, if necessary, moving the other threshold so that
+ * it's MIN_THRESH_DELTA away from this one.
+ */
+static ssize_t store_battery_stop_charge_thresh(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int thresh, other_thresh, ret;
+ int bat = attr_get_bat(attr);
+
+ if (sscanf(buf, "%d", &thresh) != 1 || thresh < 1 || thresh > 100)
+ return -EINVAL;
+
+ if (thresh < MIN_THRESH_STOP) /* clamp up to MIN_THRESH_STOP */
+ thresh = MIN_THRESH_STOP;
+
+ down(&smapi_mutex);
+ ret = get_thresh(bat, THRESH_START, &other_thresh);
+ if (ret != -EOPNOTSUPP && ret != -ENXIO) { /* other threshold exists? */
+ if (ret)
+ goto out;
+ /* this threshold exists? */
+ ret = get_real_thresh(bat, THRESH_STOP, NULL);
+ if (ret)
+ goto out;
+ if (other_thresh >= thresh-MIN_THRESH_DELTA) {
+ /* move other thresh to be below this one */
+ ret = set_thresh(bat, THRESH_START,
+ thresh-MIN_THRESH_DELTA);
+ if (ret)
+ goto out;
+ }
+ }
+ ret = set_thresh(bat, THRESH_STOP, thresh);
+out:
+ up(&smapi_mutex);
+ return count;
+}
+
+static ssize_t show_battery_inhibit_charge_minutes(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int minutes;
+ int bat = attr_get_bat(attr);
+ int ret = get_inhibit_charge_minutes(bat, &minutes);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%d\n", minutes); /* units: minutes */
+}
+
+static ssize_t store_battery_inhibit_charge_minutes(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ret;
+ int minutes;
+ int bat = attr_get_bat(attr);
+ if (sscanf(buf, "%d", &minutes) != 1 || minutes < 0) {
+ TPRINTK(KERN_ERR, "inhibit_charge_minutes: "
+ "must be a non-negative integer");
+ return -EINVAL;
+ }
+ ret = set_inhibit_charge_minutes(bat, minutes);
+ if (ret)
+ return ret;
+ return count;
+}
+
+static ssize_t show_battery_force_discharge(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int enabled;
+ int bat = attr_get_bat(attr);
+ int ret = get_force_discharge(bat, &enabled);
+ if (ret)
+ return ret;
+ return sprintf(buf, "%d\n", enabled); /* type: boolean */
+}
+
+static ssize_t store_battery_force_discharge(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int ret;
+ int enabled;
+ int bat = attr_get_bat(attr);
+ if (sscanf(buf, "%d", &enabled) != 1 || enabled < 0 || enabled > 1)
+ return -EINVAL;
+ ret = set_force_discharge(bat, enabled);
+ if (ret)
+ return ret;
+ return count;
+}
+
+static ssize_t show_battery_installed(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int bat = attr_get_bat(attr);
+ int ret = power_device_present(bat);
+ if (ret < 0)
+ return ret;
+ return sprintf(buf, "%d\n", ret); /* type: boolean */
+}
+
+static ssize_t show_battery_state(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ u8 row[TP_CONTROLLER_ROW_LEN];
+ const char *txt;
+ int ret;
+ int bat = attr_get_bat(attr);
+ if (bat_has_status(bat) != 1)
+ return sprintf(buf, "none\n");
+ ret = read_tp_ec_row(1, bat, 0, row);
+ if (ret)
+ return ret;
+ switch (row[1] & 0xf0) {
+ case 0xc0: txt = "idle"; break;
+ case 0xd0: txt = "discharging"; break;
+ case 0xe0: txt = "charging"; break;
+ default: return sprintf(buf, "unknown (0x%x)\n", row[1]);
+ }
+ return sprintf(buf, "%s\n", txt); /* type: string from fixed set */
+}
+
+static ssize_t show_battery_manufacturer(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: string. SBS spec v1.1 p34: ManufacturerName() */
+ return show_tp_ec_bat_str(4, 2, TP_CONTROLLER_ROW_LEN-2, attr, buf);
+}
+
+static ssize_t show_battery_model(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: string. SBS spec v1.1 p34: DeviceName() */
+ return show_tp_ec_bat_str(5, 2, TP_CONTROLLER_ROW_LEN-2, attr, buf);
+}
+
+static ssize_t show_battery_barcoding(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: string */
+ return show_tp_ec_bat_str(7, 2, TP_CONTROLLER_ROW_LEN-2, attr, buf);
+}
+
+static ssize_t show_battery_chemistry(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: string. SBS spec v1.1 p34-35: DeviceChemistry() */
+ return show_tp_ec_bat_str(6, 2, 5, attr, buf);
+}
+
+static ssize_t show_battery_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV. SBS spec v1.1 p24: Voltage() */
+ return show_tp_ec_bat_u16(1, 6, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_design_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV. SBS spec v1.1 p32: DesignVoltage() */
+ return show_tp_ec_bat_u16(3, 4, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_charging_max_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV. SBS spec v1.1 p37,39: ChargingVoltage() */
+ return show_tp_ec_bat_u16(9, 8, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_group0_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV */
+ return show_tp_ec_bat_u16(0xA, 12, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_group1_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV */
+ return show_tp_ec_bat_u16(0xA, 10, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_group2_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV */
+ return show_tp_ec_bat_u16(0xA, 8, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_group3_voltage(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mV */
+ return show_tp_ec_bat_u16(0xA, 6, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_current_now(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mA. SBS spec v1.1 p24: Current() */
+ return show_tp_ec_bat_s16(1, 8, 1, 0, attr, buf);
+}
+
+static ssize_t show_battery_current_avg(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mA. SBS spec v1.1 p24: AverageCurrent() */
+ return show_tp_ec_bat_s16(1, 10, 1, 0, attr, buf);
+}
+
+static ssize_t show_battery_charging_max_current(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mA. SBS spec v1.1 p36,38: ChargingCurrent() */
+ return show_tp_ec_bat_s16(9, 6, 1, 0, attr, buf);
+}
+
+static ssize_t show_battery_power_now(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mW. SBS spec v1.1: Voltage()*Current() */
+ return show_tp_ec_bat_power(1, 6, 8, attr, buf);
+}
+
+static ssize_t show_battery_power_avg(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mW. SBS spec v1.1: Voltage()*AverageCurrent() */
+ return show_tp_ec_bat_power(1, 6, 10, attr, buf);
+}
+
+static ssize_t show_battery_remaining_percent(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: percent. SBS spec v1.1 p25: RelativeStateOfCharge() */
+ return show_tp_ec_bat_u16(1, 12, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_remaining_percent_error(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: percent. SBS spec v1.1 p25: MaxError() */
+ return show_tp_ec_bat_u16(9, 4, 1, NULL, attr, buf);
+}
+
+static ssize_t show_battery_remaining_charging_time(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: minutes. SBS spec v1.1 p27: AverageTimeToFull() */
+ return show_tp_ec_bat_u16(2, 8, 1, "not_charging", attr, buf);
+}
+
+static ssize_t show_battery_remaining_running_time(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: minutes. SBS spec v1.1 p27: RunTimeToEmpty() */
+ return show_tp_ec_bat_u16(2, 6, 1, "not_discharging", attr, buf);
+}
+
+static ssize_t show_battery_remaining_running_time_now(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: minutes. SBS spec v1.1 p27: RunTimeToEmpty() */
+ return show_tp_ec_bat_u16(2, 4, 1, "not_discharging", attr, buf);
+}
+
+static ssize_t show_battery_remaining_capacity(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mWh. SBS spec v1.1 p26. */
+ return show_tp_ec_bat_u16(1, 14, 10, "", attr, buf);
+}
+
+static ssize_t show_battery_last_full_capacity(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mWh. SBS spec v1.1 p26: FullChargeCapacity() */
+ return show_tp_ec_bat_u16(2, 2, 10, "", attr, buf);
+}
+
+static ssize_t show_battery_design_capacity(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: mWh. SBS spec v1.1 p32: DesignCapacity() */
+ return show_tp_ec_bat_u16(3, 2, 10, "", attr, buf);
+}
+
+static ssize_t show_battery_cycle_count(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: ordinal. SBS spec v1.1 p32: CycleCount() */
+ return show_tp_ec_bat_u16(2, 12, 1, "", attr, buf);
+}
+
+static ssize_t show_battery_temperature(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* units: millicelsius. SBS spec v1.1: Temperature()*10 */
+ return show_tp_ec_bat_s16(1, 4, 100, -273100, attr, buf);
+}
+
+static ssize_t show_battery_serial(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: int. SBS spec v1.1 p34: SerialNumber() */
+ return show_tp_ec_bat_u16(3, 10, 1, "", attr, buf);
+}
+
+static ssize_t show_battery_manufacture_date(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: YYYY-MM-DD. SBS spec v1.1 p34: ManufactureDate() */
+ return show_tp_ec_bat_date(3, 8, attr, buf);
+}
+
+static ssize_t show_battery_first_use_date(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* type: YYYY-MM-DD */
+ return show_tp_ec_bat_date(8, 2, attr, buf);
+}
+
+/**
+ * show_battery_dump - show the battery's dump attribute
+ * The dump attribute gives a hex dump of all EC readouts related to a
+ * battery. Some of the enumerated values don't really exist (i.e., the
+ * EC function just leaves them untouched); we use a kludge to detect and
+ * denote these.
+ */
+#define MIN_DUMP_ARG0 0x00
+#define MAX_DUMP_ARG0 0x0a /* 0x0b is useful too but hangs old EC firmware */
+static ssize_t show_battery_dump(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int i;
+ char *p = buf;
+ int bat = attr_get_bat(attr);
+ u8 arg0; /* first argument to EC */
+ u8 rowa[TP_CONTROLLER_ROW_LEN],
+ rowb[TP_CONTROLLER_ROW_LEN];
+ const u8 junka = 0xAA,
+ junkb = 0x55; /* junk values for testing changes */
+ int ret;
+
+ for (arg0 = MIN_DUMP_ARG0; arg0 <= MAX_DUMP_ARG0; ++arg0) {
+ if ((p-buf) > PAGE_SIZE-TP_CONTROLLER_ROW_LEN*5)
+ return -ENOMEM; /* don't overflow sysfs buf */
+ /* Read raw twice with different junk values,
+ * to detect unused output bytes which are left unchaged: */
+ ret = read_tp_ec_row(arg0, bat, junka, rowa);
+ if (ret)
+ return ret;
+ ret = read_tp_ec_row(arg0, bat, junkb, rowb);
+ if (ret)
+ return ret;
+ for (i = 0; i < TP_CONTROLLER_ROW_LEN; i++) {
+ if (rowa[i] == junka && rowb[i] == junkb)
+ p += sprintf(p, "-- "); /* unused by EC */
+ else
+ p += sprintf(p, "%02x ", rowa[i]);
+ }
+ p += sprintf(p, "\n");
+ }
+ return p-buf;
+}
+
+
+/*********************************************************************
+ * sysfs attribute I/O, other than batteries
+ */
+
+static ssize_t show_ac_connected(
+ struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int ret = power_device_present(0xFF);
+ if (ret < 0)
+ return ret;
+ return sprintf(buf, "%d\n", ret); /* type: boolean */
+}
+
+/*********************************************************************
+ * The the "smapi_request" sysfs attribute executes a raw SMAPI call.
+ * You write to make a request and read to get the result. The state
+ * is saved globally rather than per fd (sysfs limitation), so
+ * simultaenous requests may get each other's results! So this is for
+ * development and debugging only.
+ */
+#define MAX_SMAPI_ATTR_ANSWER_LEN 128
+static char smapi_attr_answer[MAX_SMAPI_ATTR_ANSWER_LEN] = "";
+
+static ssize_t show_smapi_request(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret = snprintf(buf, PAGE_SIZE, "%s", smapi_attr_answer);
+ smapi_attr_answer[0] = '\0';
+ return ret;
+}
+
+static ssize_t store_smapi_request(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned int inEBX, inECX, inEDI, inESI;
+ u32 outEBX, outECX, outEDX, outEDI, outESI;
+ const char *msg;
+ int ret;
+ if (sscanf(buf, "%x %x %x %x", &inEBX, &inECX, &inEDI, &inESI) != 4) {
+ smapi_attr_answer[0] = '\0';
+ return -EINVAL;
+ }
+ ret = smapi_request(
+ inEBX, inECX, inEDI, inESI,
+ &outEBX, &outECX, &outEDX, &outEDI, &outESI, &msg);
+ snprintf(smapi_attr_answer, MAX_SMAPI_ATTR_ANSWER_LEN,
+ "%x %x %x %x %x %d '%s'\n",
+ (unsigned int)outEBX, (unsigned int)outECX,
+ (unsigned int)outEDX, (unsigned int)outEDI,
+ (unsigned int)outESI, ret, msg);
+ if (ret)
+ return ret;
+ else
+ return count;
+}
+
+/*********************************************************************
+ * Power management: the embedded controller forgets the battery
+ * thresholds when the system is suspended to disk and unplugged from
+ * AC and battery, so we restore it upon resume.
+ */
+
+static int saved_threshs[4] = {-1, -1, -1, -1}; /* -1 = don't know */
+
+static int tp_suspend(struct platform_device *dev, pm_message_t state)
+{
+ int restore = (state.event == PM_EVENT_HIBERNATE ||
+ state.event == PM_EVENT_FREEZE);
+ if (!restore || get_real_thresh(0, THRESH_STOP , &saved_threshs[0]))
+ saved_threshs[0] = -1;
+ if (!restore || get_real_thresh(0, THRESH_START, &saved_threshs[1]))
+ saved_threshs[1] = -1;
+ if (!restore || get_real_thresh(1, THRESH_STOP , &saved_threshs[2]))
+ saved_threshs[2] = -1;
+ if (!restore || get_real_thresh(1, THRESH_START, &saved_threshs[3]))
+ saved_threshs[3] = -1;
+ DPRINTK("suspend saved: %d %d %d %d", saved_threshs[0],
+ saved_threshs[1], saved_threshs[2], saved_threshs[3]);
+ return 0;
+}
+
+static int tp_resume(struct platform_device *dev)
+{
+ DPRINTK("resume restoring: %d %d %d %d", saved_threshs[0],
+ saved_threshs[1], saved_threshs[2], saved_threshs[3]);
+ if (saved_threshs[0] >= 0)
+ set_real_thresh(0, THRESH_STOP , saved_threshs[0]);
+ if (saved_threshs[1] >= 0)
+ set_real_thresh(0, THRESH_START, saved_threshs[1]);
+ if (saved_threshs[2] >= 0)
+ set_real_thresh(1, THRESH_STOP , saved_threshs[2]);
+ if (saved_threshs[3] >= 0)
+ set_real_thresh(1, THRESH_START, saved_threshs[3]);
+ return 0;
+}
+
+
+/*********************************************************************
+ * Driver model
+ */
+
+static struct platform_driver tp_driver = {
+ .suspend = tp_suspend,
+ .resume = tp_resume,
+ .driver = {
+ .name = "smapi",
+ .owner = THIS_MODULE
+ },
+};
+
+
+/*********************************************************************
+ * Sysfs device model
+ */
+
+/* Attributes in /sys/devices/platform/smapi/ */
+
+static DEVICE_ATTR(ac_connected, 0444, show_ac_connected, NULL);
+static DEVICE_ATTR(smapi_request, 0600, show_smapi_request,
+ store_smapi_request);
+
+static struct attribute *tp_root_attributes[] = {
+ &dev_attr_ac_connected.attr,
+ &dev_attr_smapi_request.attr,
+ NULL
+};
+static struct attribute_group tp_root_attribute_group = {
+ .attrs = tp_root_attributes
+};
+
+/* Attributes under /sys/devices/platform/smapi/BAT{0,1}/ :
+ * Every attribute needs to be defined (i.e., statically allocated) for
+ * each battery, and then referenced in the attribute list of each battery.
+ * We use preprocessor voodoo to avoid duplicating the list of attributes 4
+ * times. The preprocessor output is just normal sysfs attributes code.
+ */
+
+/**
+ * FOREACH_BAT_ATTR - invoke the given macros on all our battery attributes
+ * @_BAT: battery number (0 or 1)
+ * @_ATTR_RW: macro to invoke for each read/write attribute
+ * @_ATTR_R: macro to invoke for each read-only attribute
+ */
+#define FOREACH_BAT_ATTR(_BAT, _ATTR_RW, _ATTR_R) \
+ _ATTR_RW(_BAT, start_charge_thresh) \
+ _ATTR_RW(_BAT, stop_charge_thresh) \
+ _ATTR_RW(_BAT, inhibit_charge_minutes) \
+ _ATTR_RW(_BAT, force_discharge) \
+ _ATTR_R(_BAT, installed) \
+ _ATTR_R(_BAT, state) \
+ _ATTR_R(_BAT, manufacturer) \
+ _ATTR_R(_BAT, model) \
+ _ATTR_R(_BAT, barcoding) \
+ _ATTR_R(_BAT, chemistry) \
+ _ATTR_R(_BAT, voltage) \
+ _ATTR_R(_BAT, group0_voltage) \
+ _ATTR_R(_BAT, group1_voltage) \
+ _ATTR_R(_BAT, group2_voltage) \
+ _ATTR_R(_BAT, group3_voltage) \
+ _ATTR_R(_BAT, current_now) \
+ _ATTR_R(_BAT, current_avg) \
+ _ATTR_R(_BAT, charging_max_current) \
+ _ATTR_R(_BAT, power_now) \
+ _ATTR_R(_BAT, power_avg) \
+ _ATTR_R(_BAT, remaining_percent) \
+ _ATTR_R(_BAT, remaining_percent_error) \
+ _ATTR_R(_BAT, remaining_charging_time) \
+ _ATTR_R(_BAT, remaining_running_time) \
+ _ATTR_R(_BAT, remaining_running_time_now) \
+ _ATTR_R(_BAT, remaining_capacity) \
+ _ATTR_R(_BAT, last_full_capacity) \
+ _ATTR_R(_BAT, design_voltage) \
+ _ATTR_R(_BAT, charging_max_voltage) \
+ _ATTR_R(_BAT, design_capacity) \
+ _ATTR_R(_BAT, cycle_count) \
+ _ATTR_R(_BAT, temperature) \
+ _ATTR_R(_BAT, serial) \
+ _ATTR_R(_BAT, manufacture_date) \
+ _ATTR_R(_BAT, first_use_date) \
+ _ATTR_R(_BAT, dump)
+
+/* Define several macros we will feed into FOREACH_BAT_ATTR: */
+
+#define DEFINE_BAT_ATTR_RW(_BAT,_NAME) \
+ static struct bat_device_attribute dev_attr_##_NAME##_##_BAT = { \
+ .dev_attr = __ATTR(_NAME, 0644, show_battery_##_NAME, \
+ store_battery_##_NAME), \
+ .bat = _BAT \
+ };
+
+#define DEFINE_BAT_ATTR_R(_BAT,_NAME) \
+ static struct bat_device_attribute dev_attr_##_NAME##_##_BAT = { \
+ .dev_attr = __ATTR(_NAME, 0644, show_battery_##_NAME, 0), \
+ .bat = _BAT \
+ };
+
+#define REF_BAT_ATTR(_BAT,_NAME) \
+ &dev_attr_##_NAME##_##_BAT.dev_attr.attr,
+
+/* This provide all attributes for one battery: */
+
+#define PROVIDE_BAT_ATTRS(_BAT) \
+ FOREACH_BAT_ATTR(_BAT, DEFINE_BAT_ATTR_RW, DEFINE_BAT_ATTR_R) \
+ static struct attribute *tp_bat##_BAT##_attributes[] = { \
+ FOREACH_BAT_ATTR(_BAT, REF_BAT_ATTR, REF_BAT_ATTR) \
+ NULL \
+ }; \
+ static struct attribute_group tp_bat##_BAT##_attribute_group = { \
+ .name = "BAT" #_BAT, \
+ .attrs = tp_bat##_BAT##_attributes \
+ };
+
+/* Finally genereate the attributes: */
+
+PROVIDE_BAT_ATTRS(0)
+PROVIDE_BAT_ATTRS(1)
+
+/* List of attribute groups */
+
+static struct attribute_group *attr_groups[] = {
+ &tp_root_attribute_group,
+ &tp_bat0_attribute_group,
+ &tp_bat1_attribute_group,
+ NULL
+};
+
+
+/*********************************************************************
+ * Init and cleanup
+ */
+
+static struct attribute_group **next_attr_group; /* next to register */
+
+static int __init tp_init(void)
+{
+ int ret;
+ printk(KERN_INFO "tp_smapi " TP_VERSION " loading...\n");
+
+ ret = find_smapi_port();
+ if (ret < 0)
+ goto err;
+ else
+ smapi_port = ret;
+
+ if (!request_region(smapi_port, 1, "smapi")) {
+ printk(KERN_ERR "tp_smapi cannot claim port 0x%x\n",
+ smapi_port);
+ ret = -ENXIO;
+ goto err;
+ }
+
+ if (!request_region(SMAPI_PORT2, 1, "smapi")) {
+ printk(KERN_ERR "tp_smapi cannot claim port 0x%x\n",
+ SMAPI_PORT2);
+ ret = -ENXIO;
+ goto err_port1;
+ }
+
+ ret = platform_driver_register(&tp_driver);
+ if (ret)
+ goto err_port2;
+
+ pdev = platform_device_alloc("smapi", -1);
+ if (!pdev) {
+ ret = -ENOMEM;
+ goto err_driver;
+ }
+
+ ret = platform_device_add(pdev);
+ if (ret)
+ goto err_device_free;
+
+ for (next_attr_group = attr_groups; *next_attr_group;
+ ++next_attr_group) {
+ ret = sysfs_create_group(&pdev->dev.kobj, *next_attr_group);
+ if (ret)
+ goto err_attr;
+ }
+
+ printk(KERN_INFO "tp_smapi successfully loaded (smapi_port=0x%x).\n",
+ smapi_port);
+ return 0;
+
+err_attr:
+ while (--next_attr_group >= attr_groups)
+ sysfs_remove_group(&pdev->dev.kobj, *next_attr_group);
+ platform_device_unregister(pdev);
+err_device_free:
+ platform_device_put(pdev);
+err_driver:
+ platform_driver_unregister(&tp_driver);
+err_port2:
+ release_region(SMAPI_PORT2, 1);
+err_port1:
+ release_region(smapi_port, 1);
+err:
+ printk(KERN_ERR "tp_smapi init failed (ret=%d)!\n", ret);
+ return ret;
+}
+
+static void __exit tp_exit(void)
+{
+ while (next_attr_group && --next_attr_group >= attr_groups)
+ sysfs_remove_group(&pdev->dev.kobj, *next_attr_group);
+ platform_device_unregister(pdev);
+ platform_driver_unregister(&tp_driver);
+ release_region(SMAPI_PORT2, 1);
+ if (smapi_port)
+ release_region(smapi_port, 1);
+
+ printk(KERN_INFO "tp_smapi unloaded.\n");
+}
+
+module_init(tp_init);
+module_exit(tp_exit);
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
new file mode 100644
index 000000000..aac47573f
--- /dev/null
+++ b/drivers/platform/x86/wmi.c
@@ -0,0 +1,969 @@
+/*
+ * ACPI-WMI mapping driver
+ *
+ * Copyright (C) 2007-2008 Carlos Corbacho <carlos@strangeworlds.co.uk>
+ *
+ * GUID parsing code from ldm.c is:
+ * Copyright (C) 2001,2002 Richard Russon <ldm@flatcap.org>
+ * Copyright (c) 2001-2007 Anton Altaparmakov
+ * Copyright (C) 2001,2002 Jakob Kemi <jakob.kemi@telia.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/acpi.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+
+ACPI_MODULE_NAME("wmi");
+MODULE_AUTHOR("Carlos Corbacho");
+MODULE_DESCRIPTION("ACPI-WMI Mapping Driver");
+MODULE_LICENSE("GPL");
+
+#define ACPI_WMI_CLASS "wmi"
+
+static LIST_HEAD(wmi_block_list);
+
+struct guid_block {
+ char guid[16];
+ union {
+ char object_id[2];
+ struct {
+ unsigned char notify_id;
+ unsigned char reserved;
+ };
+ };
+ u8 instance_count;
+ u8 flags;
+};
+
+struct wmi_block {
+ struct list_head list;
+ struct guid_block gblock;
+ acpi_handle handle;
+ wmi_notify_handler handler;
+ void *handler_data;
+ struct device dev;
+};
+
+
+/*
+ * If the GUID data block is marked as expensive, we must enable and
+ * explicitily disable data collection.
+ */
+#define ACPI_WMI_EXPENSIVE 0x1
+#define ACPI_WMI_METHOD 0x2 /* GUID is a method */
+#define ACPI_WMI_STRING 0x4 /* GUID takes & returns a string */
+#define ACPI_WMI_EVENT 0x8 /* GUID is an event */
+
+static bool debug_event;
+module_param(debug_event, bool, 0444);
+MODULE_PARM_DESC(debug_event,
+ "Log WMI Events [0/1]");
+
+static bool debug_dump_wdg;
+module_param(debug_dump_wdg, bool, 0444);
+MODULE_PARM_DESC(debug_dump_wdg,
+ "Dump available WMI interfaces [0/1]");
+
+static int acpi_wmi_remove(struct acpi_device *device);
+static int acpi_wmi_add(struct acpi_device *device);
+static void acpi_wmi_notify(struct acpi_device *device, u32 event);
+
+static const struct acpi_device_id wmi_device_ids[] = {
+ {"PNP0C14", 0},
+ {"pnp0c14", 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, wmi_device_ids);
+
+static struct acpi_driver acpi_wmi_driver = {
+ .name = "wmi",
+ .class = ACPI_WMI_CLASS,
+ .ids = wmi_device_ids,
+ .ops = {
+ .add = acpi_wmi_add,
+ .remove = acpi_wmi_remove,
+ .notify = acpi_wmi_notify,
+ },
+};
+
+/*
+ * GUID parsing functions
+ */
+
+/**
+ * wmi_parse_hexbyte - Convert a ASCII hex number to a byte
+ * @src: Pointer to at least 2 characters to convert.
+ *
+ * Convert a two character ASCII hex string to a number.
+ *
+ * Return: 0-255 Success, the byte was parsed correctly
+ * -1 Error, an invalid character was supplied
+ */
+static int wmi_parse_hexbyte(const u8 *src)
+{
+ int h;
+ int value;
+
+ /* high part */
+ h = value = hex_to_bin(src[0]);
+ if (value < 0)
+ return -1;
+
+ /* low part */
+ value = hex_to_bin(src[1]);
+ if (value >= 0)
+ return (h << 4) | value;
+ return -1;
+}
+
+/**
+ * wmi_swap_bytes - Rearrange GUID bytes to match GUID binary
+ * @src: Memory block holding binary GUID (16 bytes)
+ * @dest: Memory block to hold byte swapped binary GUID (16 bytes)
+ *
+ * Byte swap a binary GUID to match it's real GUID value
+ */
+static void wmi_swap_bytes(u8 *src, u8 *dest)
+{
+ int i;
+
+ for (i = 0; i <= 3; i++)
+ memcpy(dest + i, src + (3 - i), 1);
+
+ for (i = 0; i <= 1; i++)
+ memcpy(dest + 4 + i, src + (5 - i), 1);
+
+ for (i = 0; i <= 1; i++)
+ memcpy(dest + 6 + i, src + (7 - i), 1);
+
+ memcpy(dest + 8, src + 8, 8);
+}
+
+/**
+ * wmi_parse_guid - Convert GUID from ASCII to binary
+ * @src: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ * @dest: Memory block to hold binary GUID (16 bytes)
+ *
+ * N.B. The GUID need not be NULL terminated.
+ *
+ * Return: 'true' @dest contains binary GUID
+ * 'false' @dest contents are undefined
+ */
+static bool wmi_parse_guid(const u8 *src, u8 *dest)
+{
+ static const int size[] = { 4, 2, 2, 2, 6 };
+ int i, j, v;
+
+ if (src[8] != '-' || src[13] != '-' ||
+ src[18] != '-' || src[23] != '-')
+ return false;
+
+ for (j = 0; j < 5; j++, src++) {
+ for (i = 0; i < size[j]; i++, src += 2, *dest++ = v) {
+ v = wmi_parse_hexbyte(src);
+ if (v < 0)
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/*
+ * Convert a raw GUID to the ACII string representation
+ */
+static int wmi_gtoa(const char *in, char *out)
+{
+ int i;
+
+ for (i = 3; i >= 0; i--)
+ out += sprintf(out, "%02X", in[i] & 0xFF);
+
+ out += sprintf(out, "-");
+ out += sprintf(out, "%02X", in[5] & 0xFF);
+ out += sprintf(out, "%02X", in[4] & 0xFF);
+ out += sprintf(out, "-");
+ out += sprintf(out, "%02X", in[7] & 0xFF);
+ out += sprintf(out, "%02X", in[6] & 0xFF);
+ out += sprintf(out, "-");
+ out += sprintf(out, "%02X", in[8] & 0xFF);
+ out += sprintf(out, "%02X", in[9] & 0xFF);
+ out += sprintf(out, "-");
+
+ for (i = 10; i <= 15; i++)
+ out += sprintf(out, "%02X", in[i] & 0xFF);
+
+ *out = '\0';
+ return 0;
+}
+
+static bool find_guid(const char *guid_string, struct wmi_block **out)
+{
+ char tmp[16], guid_input[16];
+ struct wmi_block *wblock;
+ struct guid_block *block;
+ struct list_head *p;
+
+ wmi_parse_guid(guid_string, tmp);
+ wmi_swap_bytes(tmp, guid_input);
+
+ list_for_each(p, &wmi_block_list) {
+ wblock = list_entry(p, struct wmi_block, list);
+ block = &wblock->gblock;
+
+ if (memcmp(block->guid, guid_input, 16) == 0) {
+ if (out)
+ *out = wblock;
+ return true;
+ }
+ }
+ return false;
+}
+
+static acpi_status wmi_method_enable(struct wmi_block *wblock, int enable)
+{
+ struct guid_block *block = NULL;
+ char method[5];
+ acpi_status status;
+ acpi_handle handle;
+
+ block = &wblock->gblock;
+ handle = wblock->handle;
+
+ snprintf(method, 5, "WE%02X", block->notify_id);
+ status = acpi_execute_simple_method(handle, method, enable);
+
+ if (status != AE_OK && status != AE_NOT_FOUND)
+ return status;
+ else
+ return AE_OK;
+}
+
+/*
+ * Exported WMI functions
+ */
+/**
+ * wmi_evaluate_method - Evaluate a WMI method
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ * @instance: Instance index
+ * @method_id: Method ID to call
+ * &in: Buffer containing input for the method call
+ * &out: Empty buffer to return the method results
+ *
+ * Call an ACPI-WMI method
+ */
+acpi_status wmi_evaluate_method(const char *guid_string, u8 instance,
+u32 method_id, const struct acpi_buffer *in, struct acpi_buffer *out)
+{
+ struct guid_block *block = NULL;
+ struct wmi_block *wblock = NULL;
+ acpi_handle handle;
+ acpi_status status;
+ struct acpi_object_list input;
+ union acpi_object params[3];
+ char method[5] = "WM";
+
+ if (!find_guid(guid_string, &wblock))
+ return AE_ERROR;
+
+ block = &wblock->gblock;
+ handle = wblock->handle;
+
+ if (!(block->flags & ACPI_WMI_METHOD))
+ return AE_BAD_DATA;
+
+ if (block->instance_count < instance)
+ return AE_BAD_PARAMETER;
+
+ input.count = 2;
+ input.pointer = params;
+ params[0].type = ACPI_TYPE_INTEGER;
+ params[0].integer.value = instance;
+ params[1].type = ACPI_TYPE_INTEGER;
+ params[1].integer.value = method_id;
+
+ if (in) {
+ input.count = 3;
+
+ if (block->flags & ACPI_WMI_STRING) {
+ params[2].type = ACPI_TYPE_STRING;
+ } else {
+ params[2].type = ACPI_TYPE_BUFFER;
+ }
+ params[2].buffer.length = in->length;
+ params[2].buffer.pointer = in->pointer;
+ }
+
+ strncat(method, block->object_id, 2);
+
+ status = acpi_evaluate_object(handle, method, &input, out);
+
+ return status;
+}
+EXPORT_SYMBOL_GPL(wmi_evaluate_method);
+
+/**
+ * wmi_query_block - Return contents of a WMI block
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ * @instance: Instance index
+ * &out: Empty buffer to return the contents of the data block to
+ *
+ * Return the contents of an ACPI-WMI data block to a buffer
+ */
+acpi_status wmi_query_block(const char *guid_string, u8 instance,
+struct acpi_buffer *out)
+{
+ struct guid_block *block = NULL;
+ struct wmi_block *wblock = NULL;
+ acpi_handle handle;
+ acpi_status status, wc_status = AE_ERROR;
+ struct acpi_object_list input;
+ union acpi_object wq_params[1];
+ char method[5];
+ char wc_method[5] = "WC";
+
+ if (!guid_string || !out)
+ return AE_BAD_PARAMETER;
+
+ if (!find_guid(guid_string, &wblock))
+ return AE_ERROR;
+
+ block = &wblock->gblock;
+ handle = wblock->handle;
+
+ if (block->instance_count < instance)
+ return AE_BAD_PARAMETER;
+
+ /* Check GUID is a data block */
+ if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD))
+ return AE_ERROR;
+
+ input.count = 1;
+ input.pointer = wq_params;
+ wq_params[0].type = ACPI_TYPE_INTEGER;
+ wq_params[0].integer.value = instance;
+
+ /*
+ * If ACPI_WMI_EXPENSIVE, call the relevant WCxx method first to
+ * enable collection.
+ */
+ if (block->flags & ACPI_WMI_EXPENSIVE) {
+ strncat(wc_method, block->object_id, 2);
+
+ /*
+ * Some GUIDs break the specification by declaring themselves
+ * expensive, but have no corresponding WCxx method. So we
+ * should not fail if this happens.
+ */
+ if (acpi_has_method(handle, wc_method))
+ wc_status = acpi_execute_simple_method(handle,
+ wc_method, 1);
+ }
+
+ strcpy(method, "WQ");
+ strncat(method, block->object_id, 2);
+
+ status = acpi_evaluate_object(handle, method, &input, out);
+
+ /*
+ * If ACPI_WMI_EXPENSIVE, call the relevant WCxx method, even if
+ * the WQxx method failed - we should disable collection anyway.
+ */
+ if ((block->flags & ACPI_WMI_EXPENSIVE) && ACPI_SUCCESS(wc_status)) {
+ status = acpi_execute_simple_method(handle, wc_method, 0);
+ }
+
+ return status;
+}
+EXPORT_SYMBOL_GPL(wmi_query_block);
+
+/**
+ * wmi_set_block - Write to a WMI block
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ * @instance: Instance index
+ * &in: Buffer containing new values for the data block
+ *
+ * Write the contents of the input buffer to an ACPI-WMI data block
+ */
+acpi_status wmi_set_block(const char *guid_string, u8 instance,
+const struct acpi_buffer *in)
+{
+ struct guid_block *block = NULL;
+ struct wmi_block *wblock = NULL;
+ acpi_handle handle;
+ struct acpi_object_list input;
+ union acpi_object params[2];
+ char method[5] = "WS";
+
+ if (!guid_string || !in)
+ return AE_BAD_DATA;
+
+ if (!find_guid(guid_string, &wblock))
+ return AE_ERROR;
+
+ block = &wblock->gblock;
+ handle = wblock->handle;
+
+ if (block->instance_count < instance)
+ return AE_BAD_PARAMETER;
+
+ /* Check GUID is a data block */
+ if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD))
+ return AE_ERROR;
+
+ input.count = 2;
+ input.pointer = params;
+ params[0].type = ACPI_TYPE_INTEGER;
+ params[0].integer.value = instance;
+
+ if (block->flags & ACPI_WMI_STRING) {
+ params[1].type = ACPI_TYPE_STRING;
+ } else {
+ params[1].type = ACPI_TYPE_BUFFER;
+ }
+ params[1].buffer.length = in->length;
+ params[1].buffer.pointer = in->pointer;
+
+ strncat(method, block->object_id, 2);
+
+ return acpi_evaluate_object(handle, method, &input, NULL);
+}
+EXPORT_SYMBOL_GPL(wmi_set_block);
+
+static void wmi_dump_wdg(const struct guid_block *g)
+{
+ char guid_string[37];
+
+ wmi_gtoa(g->guid, guid_string);
+
+ pr_info("%s:\n", guid_string);
+ pr_info("\tobject_id: %c%c\n", g->object_id[0], g->object_id[1]);
+ pr_info("\tnotify_id: %02X\n", g->notify_id);
+ pr_info("\treserved: %02X\n", g->reserved);
+ pr_info("\tinstance_count: %d\n", g->instance_count);
+ pr_info("\tflags: %#x", g->flags);
+ if (g->flags) {
+ if (g->flags & ACPI_WMI_EXPENSIVE)
+ pr_cont(" ACPI_WMI_EXPENSIVE");
+ if (g->flags & ACPI_WMI_METHOD)
+ pr_cont(" ACPI_WMI_METHOD");
+ if (g->flags & ACPI_WMI_STRING)
+ pr_cont(" ACPI_WMI_STRING");
+ if (g->flags & ACPI_WMI_EVENT)
+ pr_cont(" ACPI_WMI_EVENT");
+ }
+ pr_cont("\n");
+
+}
+
+static void wmi_notify_debug(u32 value, void *context)
+{
+ struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ acpi_status status;
+
+ status = wmi_get_event_data(value, &response);
+ if (status != AE_OK) {
+ pr_info("bad event status 0x%x\n", status);
+ return;
+ }
+
+ obj = (union acpi_object *)response.pointer;
+
+ if (!obj)
+ return;
+
+ pr_info("DEBUG Event ");
+ switch(obj->type) {
+ case ACPI_TYPE_BUFFER:
+ pr_cont("BUFFER_TYPE - length %d\n", obj->buffer.length);
+ break;
+ case ACPI_TYPE_STRING:
+ pr_cont("STRING_TYPE - %s\n", obj->string.pointer);
+ break;
+ case ACPI_TYPE_INTEGER:
+ pr_cont("INTEGER_TYPE - %llu\n", obj->integer.value);
+ break;
+ case ACPI_TYPE_PACKAGE:
+ pr_cont("PACKAGE_TYPE - %d elements\n", obj->package.count);
+ break;
+ default:
+ pr_cont("object type 0x%X\n", obj->type);
+ }
+ kfree(obj);
+}
+
+/**
+ * wmi_install_notify_handler - Register handler for WMI events
+ * @handler: Function to handle notifications
+ * @data: Data to be returned to handler when event is fired
+ *
+ * Register a handler for events sent to the ACPI-WMI mapper device.
+ */
+acpi_status wmi_install_notify_handler(const char *guid,
+wmi_notify_handler handler, void *data)
+{
+ struct wmi_block *block;
+ acpi_status status = AE_NOT_EXIST;
+ char tmp[16], guid_input[16];
+ struct list_head *p;
+
+ if (!guid || !handler)
+ return AE_BAD_PARAMETER;
+
+ wmi_parse_guid(guid, tmp);
+ wmi_swap_bytes(tmp, guid_input);
+
+ list_for_each(p, &wmi_block_list) {
+ acpi_status wmi_status;
+ block = list_entry(p, struct wmi_block, list);
+
+ if (memcmp(block->gblock.guid, guid_input, 16) == 0) {
+ if (block->handler &&
+ block->handler != wmi_notify_debug)
+ return AE_ALREADY_ACQUIRED;
+
+ block->handler = handler;
+ block->handler_data = data;
+
+ wmi_status = wmi_method_enable(block, 1);
+ if ((wmi_status != AE_OK) ||
+ ((wmi_status == AE_OK) && (status == AE_NOT_EXIST)))
+ status = wmi_status;
+ }
+ }
+
+ return status;
+}
+EXPORT_SYMBOL_GPL(wmi_install_notify_handler);
+
+/**
+ * wmi_uninstall_notify_handler - Unregister handler for WMI events
+ *
+ * Unregister handler for events sent to the ACPI-WMI mapper device.
+ */
+acpi_status wmi_remove_notify_handler(const char *guid)
+{
+ struct wmi_block *block;
+ acpi_status status = AE_NOT_EXIST;
+ char tmp[16], guid_input[16];
+ struct list_head *p;
+
+ if (!guid)
+ return AE_BAD_PARAMETER;
+
+ wmi_parse_guid(guid, tmp);
+ wmi_swap_bytes(tmp, guid_input);
+
+ list_for_each(p, &wmi_block_list) {
+ acpi_status wmi_status;
+ block = list_entry(p, struct wmi_block, list);
+
+ if (memcmp(block->gblock.guid, guid_input, 16) == 0) {
+ if (!block->handler ||
+ block->handler == wmi_notify_debug)
+ return AE_NULL_ENTRY;
+
+ if (debug_event) {
+ block->handler = wmi_notify_debug;
+ status = AE_OK;
+ } else {
+ wmi_status = wmi_method_enable(block, 0);
+ block->handler = NULL;
+ block->handler_data = NULL;
+ if ((wmi_status != AE_OK) ||
+ ((wmi_status == AE_OK) &&
+ (status == AE_NOT_EXIST)))
+ status = wmi_status;
+ }
+ }
+ }
+
+ return status;
+}
+EXPORT_SYMBOL_GPL(wmi_remove_notify_handler);
+
+/**
+ * wmi_get_event_data - Get WMI data associated with an event
+ *
+ * @event: Event to find
+ * @out: Buffer to hold event data. out->pointer should be freed with kfree()
+ *
+ * Returns extra data associated with an event in WMI.
+ */
+acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out)
+{
+ struct acpi_object_list input;
+ union acpi_object params[1];
+ struct guid_block *gblock;
+ struct wmi_block *wblock;
+ struct list_head *p;
+
+ input.count = 1;
+ input.pointer = params;
+ params[0].type = ACPI_TYPE_INTEGER;
+ params[0].integer.value = event;
+
+ list_for_each(p, &wmi_block_list) {
+ wblock = list_entry(p, struct wmi_block, list);
+ gblock = &wblock->gblock;
+
+ if ((gblock->flags & ACPI_WMI_EVENT) &&
+ (gblock->notify_id == event))
+ return acpi_evaluate_object(wblock->handle, "_WED",
+ &input, out);
+ }
+
+ return AE_NOT_FOUND;
+}
+EXPORT_SYMBOL_GPL(wmi_get_event_data);
+
+/**
+ * wmi_has_guid - Check if a GUID is available
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ *
+ * Check if a given GUID is defined by _WDG
+ */
+bool wmi_has_guid(const char *guid_string)
+{
+ return find_guid(guid_string, NULL);
+}
+EXPORT_SYMBOL_GPL(wmi_has_guid);
+
+/*
+ * sysfs interface
+ */
+static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ char guid_string[37];
+ struct wmi_block *wblock;
+
+ wblock = dev_get_drvdata(dev);
+ if (!wblock) {
+ strcat(buf, "\n");
+ return strlen(buf);
+ }
+
+ wmi_gtoa(wblock->gblock.guid, guid_string);
+
+ return sprintf(buf, "wmi:%s\n", guid_string);
+}
+static DEVICE_ATTR_RO(modalias);
+
+static struct attribute *wmi_attrs[] = {
+ &dev_attr_modalias.attr,
+ NULL,
+};
+ATTRIBUTE_GROUPS(wmi);
+
+static int wmi_dev_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ char guid_string[37];
+
+ struct wmi_block *wblock;
+
+ if (add_uevent_var(env, "MODALIAS="))
+ return -ENOMEM;
+
+ wblock = dev_get_drvdata(dev);
+ if (!wblock)
+ return -ENOMEM;
+
+ wmi_gtoa(wblock->gblock.guid, guid_string);
+
+ strcpy(&env->buf[env->buflen - 1], "wmi:");
+ memcpy(&env->buf[env->buflen - 1 + 4], guid_string, 36);
+ env->buflen += 40;
+
+ return 0;
+}
+
+static void wmi_dev_free(struct device *dev)
+{
+ struct wmi_block *wmi_block = container_of(dev, struct wmi_block, dev);
+
+ kfree(wmi_block);
+}
+
+static struct class wmi_class = {
+ .name = "wmi",
+ .dev_release = wmi_dev_free,
+ .dev_uevent = wmi_dev_uevent,
+ .dev_groups = wmi_groups,
+};
+
+static int wmi_create_device(const struct guid_block *gblock,
+ struct wmi_block *wblock, acpi_handle handle)
+{
+ char guid_string[37];
+
+ wblock->dev.class = &wmi_class;
+
+ wmi_gtoa(gblock->guid, guid_string);
+ dev_set_name(&wblock->dev, "%s", guid_string);
+
+ dev_set_drvdata(&wblock->dev, wblock);
+
+ return device_register(&wblock->dev);
+}
+
+static void wmi_free_devices(void)
+{
+ struct wmi_block *wblock, *next;
+
+ /* Delete devices for all the GUIDs */
+ list_for_each_entry_safe(wblock, next, &wmi_block_list, list) {
+ list_del(&wblock->list);
+ if (wblock->dev.class)
+ device_unregister(&wblock->dev);
+ else
+ kfree(wblock);
+ }
+}
+
+static bool guid_already_parsed(const char *guid_string)
+{
+ struct wmi_block *wblock;
+
+ list_for_each_entry(wblock, &wmi_block_list, list)
+ if (memcmp(wblock->gblock.guid, guid_string, 16) == 0)
+ return true;
+
+ return false;
+}
+
+/*
+ * Parse the _WDG method for the GUID data blocks
+ */
+static int parse_wdg(acpi_handle handle)
+{
+ struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
+ union acpi_object *obj;
+ const struct guid_block *gblock;
+ struct wmi_block *wblock;
+ acpi_status status;
+ int retval;
+ u32 i, total;
+
+ status = acpi_evaluate_object(handle, "_WDG", NULL, &out);
+ if (ACPI_FAILURE(status))
+ return -ENXIO;
+
+ obj = (union acpi_object *) out.pointer;
+ if (!obj)
+ return -ENXIO;
+
+ if (obj->type != ACPI_TYPE_BUFFER) {
+ retval = -ENXIO;
+ goto out_free_pointer;
+ }
+
+ gblock = (const struct guid_block *)obj->buffer.pointer;
+ total = obj->buffer.length / sizeof(struct guid_block);
+
+ for (i = 0; i < total; i++) {
+ if (debug_dump_wdg)
+ wmi_dump_wdg(&gblock[i]);
+
+ wblock = kzalloc(sizeof(struct wmi_block), GFP_KERNEL);
+ if (!wblock)
+ return -ENOMEM;
+
+ wblock->handle = handle;
+ wblock->gblock = gblock[i];
+
+ /*
+ Some WMI devices, like those for nVidia hooks, have a
+ duplicate GUID. It's not clear what we should do in this
+ case yet, so for now, we'll just ignore the duplicate
+ for device creation.
+ */
+ if (!guid_already_parsed(gblock[i].guid)) {
+ retval = wmi_create_device(&gblock[i], wblock, handle);
+ if (retval) {
+ wmi_free_devices();
+ goto out_free_pointer;
+ }
+ }
+
+ list_add_tail(&wblock->list, &wmi_block_list);
+
+ if (debug_event) {
+ wblock->handler = wmi_notify_debug;
+ wmi_method_enable(wblock, 1);
+ }
+ }
+
+ retval = 0;
+
+out_free_pointer:
+ kfree(out.pointer);
+
+ return retval;
+}
+
+/*
+ * WMI can have EmbeddedControl access regions. In which case, we just want to
+ * hand these off to the EC driver.
+ */
+static acpi_status
+acpi_wmi_ec_space_handler(u32 function, acpi_physical_address address,
+ u32 bits, u64 *value,
+ void *handler_context, void *region_context)
+{
+ int result = 0, i = 0;
+ u8 temp = 0;
+
+ if ((address > 0xFF) || !value)
+ return AE_BAD_PARAMETER;
+
+ if (function != ACPI_READ && function != ACPI_WRITE)
+ return AE_BAD_PARAMETER;
+
+ if (bits != 8)
+ return AE_BAD_PARAMETER;
+
+ if (function == ACPI_READ) {
+ result = ec_read(address, &temp);
+ (*value) |= ((u64)temp) << i;
+ } else {
+ temp = 0xff & ((*value) >> i);
+ result = ec_write(address, temp);
+ }
+
+ switch (result) {
+ case -EINVAL:
+ return AE_BAD_PARAMETER;
+ break;
+ case -ENODEV:
+ return AE_NOT_FOUND;
+ break;
+ case -ETIME:
+ return AE_TIME;
+ break;
+ default:
+ return AE_OK;
+ }
+}
+
+static void acpi_wmi_notify(struct acpi_device *device, u32 event)
+{
+ struct guid_block *block;
+ struct wmi_block *wblock;
+ struct list_head *p;
+ char guid_string[37];
+
+ list_for_each(p, &wmi_block_list) {
+ wblock = list_entry(p, struct wmi_block, list);
+ block = &wblock->gblock;
+
+ if ((block->flags & ACPI_WMI_EVENT) &&
+ (block->notify_id == event)) {
+ if (wblock->handler)
+ wblock->handler(event, wblock->handler_data);
+ if (debug_event) {
+ wmi_gtoa(wblock->gblock.guid, guid_string);
+ pr_info("DEBUG Event GUID: %s\n", guid_string);
+ }
+
+ acpi_bus_generate_netlink_event(
+ device->pnp.device_class, dev_name(&device->dev),
+ event, 0);
+ break;
+ }
+ }
+}
+
+static int acpi_wmi_remove(struct acpi_device *device)
+{
+ acpi_remove_address_space_handler(device->handle,
+ ACPI_ADR_SPACE_EC, &acpi_wmi_ec_space_handler);
+ wmi_free_devices();
+
+ return 0;
+}
+
+static int acpi_wmi_add(struct acpi_device *device)
+{
+ acpi_status status;
+ int error;
+
+ status = acpi_install_address_space_handler(device->handle,
+ ACPI_ADR_SPACE_EC,
+ &acpi_wmi_ec_space_handler,
+ NULL, NULL);
+ if (ACPI_FAILURE(status)) {
+ pr_err("Error installing EC region handler\n");
+ return -ENODEV;
+ }
+
+ error = parse_wdg(device->handle);
+ if (error) {
+ acpi_remove_address_space_handler(device->handle,
+ ACPI_ADR_SPACE_EC,
+ &acpi_wmi_ec_space_handler);
+ pr_err("Failed to parse WDG method\n");
+ return error;
+ }
+
+ return 0;
+}
+
+static int __init acpi_wmi_init(void)
+{
+ int error;
+
+ if (acpi_disabled)
+ return -ENODEV;
+
+ error = class_register(&wmi_class);
+ if (error)
+ return error;
+
+ error = acpi_bus_register_driver(&acpi_wmi_driver);
+ if (error) {
+ pr_err("Error loading mapper\n");
+ class_unregister(&wmi_class);
+ return error;
+ }
+
+ pr_info("Mapper loaded\n");
+ return 0;
+}
+
+static void __exit acpi_wmi_exit(void)
+{
+ acpi_bus_unregister_driver(&acpi_wmi_driver);
+ class_unregister(&wmi_class);
+
+ pr_info("Mapper unloaded\n");
+}
+
+subsys_initcall(acpi_wmi_init);
+module_exit(acpi_wmi_exit);
diff --git a/drivers/platform/x86/xo1-rfkill.c b/drivers/platform/x86/xo1-rfkill.c
new file mode 100644
index 000000000..e46fa9ceb
--- /dev/null
+++ b/drivers/platform/x86/xo1-rfkill.c
@@ -0,0 +1,83 @@
+/*
+ * Support for rfkill through the OLPC XO-1 laptop embedded controller
+ *
+ * Copyright (C) 2010 One Laptop per Child
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/rfkill.h>
+#include <linux/olpc-ec.h>
+
+static bool card_blocked;
+
+static int rfkill_set_block(void *data, bool blocked)
+{
+ unsigned char cmd;
+ int r;
+
+ if (blocked == card_blocked)
+ return 0;
+
+ if (blocked)
+ cmd = EC_WLAN_ENTER_RESET;
+ else
+ cmd = EC_WLAN_LEAVE_RESET;
+
+ r = olpc_ec_cmd(cmd, NULL, 0, NULL, 0);
+ if (r == 0)
+ card_blocked = blocked;
+
+ return r;
+}
+
+static const struct rfkill_ops rfkill_ops = {
+ .set_block = rfkill_set_block,
+};
+
+static int xo1_rfkill_probe(struct platform_device *pdev)
+{
+ struct rfkill *rfk;
+ int r;
+
+ rfk = rfkill_alloc(pdev->name, &pdev->dev, RFKILL_TYPE_WLAN,
+ &rfkill_ops, NULL);
+ if (!rfk)
+ return -ENOMEM;
+
+ r = rfkill_register(rfk);
+ if (r) {
+ rfkill_destroy(rfk);
+ return r;
+ }
+
+ platform_set_drvdata(pdev, rfk);
+ return 0;
+}
+
+static int xo1_rfkill_remove(struct platform_device *pdev)
+{
+ struct rfkill *rfk = platform_get_drvdata(pdev);
+ rfkill_unregister(rfk);
+ rfkill_destroy(rfk);
+ return 0;
+}
+
+static struct platform_driver xo1_rfkill_driver = {
+ .driver = {
+ .name = "xo1-rfkill",
+ },
+ .probe = xo1_rfkill_probe,
+ .remove = xo1_rfkill_remove,
+};
+
+module_platform_driver(xo1_rfkill_driver);
+
+MODULE_AUTHOR("Daniel Drake <dsd@laptop.org>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:xo1-rfkill");
diff --git a/drivers/platform/x86/xo15-ebook.c b/drivers/platform/x86/xo15-ebook.c
new file mode 100644
index 000000000..49cbccec6
--- /dev/null
+++ b/drivers/platform/x86/xo15-ebook.c
@@ -0,0 +1,172 @@
+/*
+ * OLPC XO-1.5 ebook switch driver
+ * (based on generic ACPI button driver)
+ *
+ * Copyright (C) 2009 Paul Fox <pgf@laptop.org>
+ * Copyright (C) 2010 One Laptop per Child
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/input.h>
+#include <linux/acpi.h>
+
+#define MODULE_NAME "xo15-ebook"
+
+#define XO15_EBOOK_CLASS MODULE_NAME
+#define XO15_EBOOK_TYPE_UNKNOWN 0x00
+#define XO15_EBOOK_NOTIFY_STATUS 0x80
+
+#define XO15_EBOOK_SUBCLASS "ebook"
+#define XO15_EBOOK_HID "XO15EBK"
+#define XO15_EBOOK_DEVICE_NAME "EBook Switch"
+
+ACPI_MODULE_NAME(MODULE_NAME);
+
+MODULE_DESCRIPTION("OLPC XO-1.5 ebook switch driver");
+MODULE_LICENSE("GPL");
+
+static const struct acpi_device_id ebook_device_ids[] = {
+ { XO15_EBOOK_HID, 0 },
+ { "", 0 },
+};
+MODULE_DEVICE_TABLE(acpi, ebook_device_ids);
+
+struct ebook_switch {
+ struct input_dev *input;
+ char phys[32]; /* for input device */
+};
+
+static int ebook_send_state(struct acpi_device *device)
+{
+ struct ebook_switch *button = acpi_driver_data(device);
+ unsigned long long state;
+ acpi_status status;
+
+ status = acpi_evaluate_integer(device->handle, "EBK", NULL, &state);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ /* input layer checks if event is redundant */
+ input_report_switch(button->input, SW_TABLET_MODE, !state);
+ input_sync(button->input);
+ return 0;
+}
+
+static void ebook_switch_notify(struct acpi_device *device, u32 event)
+{
+ switch (event) {
+ case ACPI_FIXED_HARDWARE_EVENT:
+ case XO15_EBOOK_NOTIFY_STATUS:
+ ebook_send_state(device);
+ break;
+ default:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Unsupported event [0x%x]\n", event));
+ break;
+ }
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int ebook_switch_resume(struct device *dev)
+{
+ return ebook_send_state(to_acpi_device(dev));
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(ebook_switch_pm, NULL, ebook_switch_resume);
+
+static int ebook_switch_add(struct acpi_device *device)
+{
+ struct ebook_switch *button;
+ struct input_dev *input;
+ const char *hid = acpi_device_hid(device);
+ char *name, *class;
+ int error;
+
+ button = kzalloc(sizeof(struct ebook_switch), GFP_KERNEL);
+ if (!button)
+ return -ENOMEM;
+
+ device->driver_data = button;
+
+ button->input = input = input_allocate_device();
+ if (!input) {
+ error = -ENOMEM;
+ goto err_free_button;
+ }
+
+ name = acpi_device_name(device);
+ class = acpi_device_class(device);
+
+ if (strcmp(hid, XO15_EBOOK_HID)) {
+ pr_err("Unsupported hid [%s]\n", hid);
+ error = -ENODEV;
+ goto err_free_input;
+ }
+
+ strcpy(name, XO15_EBOOK_DEVICE_NAME);
+ sprintf(class, "%s/%s", XO15_EBOOK_CLASS, XO15_EBOOK_SUBCLASS);
+
+ snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid);
+
+ input->name = name;
+ input->phys = button->phys;
+ input->id.bustype = BUS_HOST;
+ input->dev.parent = &device->dev;
+
+ input->evbit[0] = BIT_MASK(EV_SW);
+ set_bit(SW_TABLET_MODE, input->swbit);
+
+ error = input_register_device(input);
+ if (error)
+ goto err_free_input;
+
+ ebook_send_state(device);
+
+ if (device->wakeup.flags.valid) {
+ /* Button's GPE is run-wake GPE */
+ acpi_enable_gpe(device->wakeup.gpe_device,
+ device->wakeup.gpe_number);
+ device_set_wakeup_enable(&device->dev, true);
+ }
+
+ return 0;
+
+ err_free_input:
+ input_free_device(input);
+ err_free_button:
+ kfree(button);
+ return error;
+}
+
+static int ebook_switch_remove(struct acpi_device *device)
+{
+ struct ebook_switch *button = acpi_driver_data(device);
+
+ input_unregister_device(button->input);
+ kfree(button);
+ return 0;
+}
+
+static struct acpi_driver xo15_ebook_driver = {
+ .name = MODULE_NAME,
+ .class = XO15_EBOOK_CLASS,
+ .ids = ebook_device_ids,
+ .ops = {
+ .add = ebook_switch_add,
+ .remove = ebook_switch_remove,
+ .notify = ebook_switch_notify,
+ },
+ .drv.pm = &ebook_switch_pm,
+};
+module_acpi_driver(xo15_ebook_driver);