Initial import

1 files changed, 2347 insertions, 0 deletions

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);