drivers/platform/x86/eeepc-wmi.c - maze/linux - Git at Google

 /*
  * 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 <acpi/acpi_bus.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[] = {
 	/* 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 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);
	/*
	* 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 <acpi/acpi_bus.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[] = {
	/* 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 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);