path: root/drivers/platform/x86/asus-wmi.c

/*
 * 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/debugfs.h>
#include <linux/seq_file.h>
#include <linux/platform_device.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>

#include "asus-wmi.h"

MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>, "
	      "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

/* WMI Methods */
#define ASUS_WMI_METHODID_DSTS		0x53544344
#define ASUS_WMI_METHODID_DEVS		0x53564544
#define ASUS_WMI_METHODID_CFVS		0x53564643

/* Wireless */
#define ASUS_WMI_DEVID_WLAN		0x00010011
#define ASUS_WMI_DEVID_BLUETOOTH	0x00010013
#define ASUS_WMI_DEVID_WIMAX		0x00010017
#define ASUS_WMI_DEVID_WWAN3G		0x00010019

/* Backlight and Brightness */
#define ASUS_WMI_DEVID_BACKLIGHT	0x00050011
#define ASUS_WMI_DEVID_BRIGHTNESS	0x00050012

/* 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

/* DSTS masks */
#define ASUS_WMI_DSTS_STATUS_BIT	0x00000001
#define ASUS_WMI_DSTS_PRESENCE_BIT	0x00010000
#define ASUS_WMI_DSTS_BRIGHTNESS_MASK	0x000000FF
#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK	0x0000FF00

struct bios_args {
	u32 dev_id;
	u32 ctrl_param;
};

/*
 * <platform>/    - debugfs root directory
 *   dev_id      - current dev_id
 *   ctrl_param  - current ctrl_param
 *   devs        - call DEVS(dev_id, ctrl_param) and print result
 *   dsts        - call DSTS(dev_id)  and print result
 */
struct asus_wmi_debug {
	struct dentry *root;
	u32 dev_id;
	u32 ctrl_param;
};

struct asus_rfkill {