1 files changed, 278 insertions, 0 deletions
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);