path: root/drivers/misc/acer-wmi.c

/*
 *  Acer WMI Laptop Extras
 *
 *  Copyright (C) 2007-2008	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
 */

#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 <acpi/acpi_drivers.h>

MODULE_AUTHOR("Carlos Corbacho");
MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
MODULE_LICENSE("GPL");

#define ACER_LOGPREFIX "acer-wmi: "
#define ACER_ERR KERN_ERR ACER_LOGPREFIX
#define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
#define ACER_INFO KERN_INFO ACER_LOGPREFIX

/*
 * The following defines quirks to get some specific functions to work
 * which are known to not be supported over ACPI-WMI (such as the mail LED
 * on WMID based Acer's)
 */
struct acer_quirks {
	const char *vendor;
	const char *model;
	u16 quirks;
};

/*
 * 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"

MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");

/* Temporary workaround until the WMI sysfs interface goes in */
MODULE_ALIAS("dmi:*:*Acer*:*:");

/*
 * 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_ANY			(0xFFFFFFFF)

/*
 * Interface type flags
 */
enum interface_flags {
	ACER_AMW0,
	ACER_AMW0_V2,
	ACER_WMID,
};

#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;

module_param(mailled, int, 0444);
module_param(brightness, int, 0444);
module_param(threeg, int, 0444);
module_param(force_series,