path: root/drivers/platform/x86/asus_acpi.c

/*
 *  asus_acpi.c - Asus Laptop ACPI Extras
 *
 *
 *  Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
 *
 *  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
 *
 *
 *  The development page for this driver is located at
 *  http://sourceforge.net/projects/acpi4asus/
 *
 *  Credits:
 *  Pontus Fuchs   - Helper functions, cleanup
 *  Johann Wiesner - Small compile fixes
 *  John Belmonte  - ACPI code for Toshiba laptop was a good starting point.
 *  �ic Burghard  - LED display support for W1N
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/backlight.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_bus.h>
#include <asm/uaccess.h>

#define ASUS_ACPI_VERSION "0.30"

#define PROC_ASUS       "asus"	/* The directory */
#define PROC_MLED       "mled"
#define PROC_WLED       "wled"
#define PROC_TLED       "tled"
#define PROC_BT         "bluetooth"
#define PROC_LEDD       "ledd"
#define PROC_INFO       "info"
#define PROC_LCD        "lcd"
#define PROC_BRN        "brn"
#define PROC_DISP       "disp"

#define ACPI_HOTK_NAME          "Asus Laptop ACPI Extras Driver"
#define ACPI_HOTK_CLASS         "hotkey"
#define ACPI_HOTK_DEVICE_NAME   "Hotkey"

/*
 * Some events we use, same for all Asus
 */
#define BR_UP       0x10
#define BR_DOWN     0x20

/*
 * Flags for hotk status
 */
#define MLED_ON     0x01	/* Mail LED */
#define WLED_ON     0x02	/* Wireless LED */
#define TLED_ON     0x04	/* Touchpad LED */
#define BT_ON       0x08	/* Internal Bluetooth */

MODULE_AUTHOR("Julien Lerouge, Karol Kozimor");
MODULE_DESCRIPTION(ACPI_HOTK_NAME);
MODULE_LICENSE("GPL");

static uid_t asus_uid;
static gid_t asus_gid;
module_param(asus_uid, uint, 0);
MODULE_PARM_DESC(asus_uid, "UID for entries in /proc/acpi/asus");
module_param(asus_gid, uint, 0);
MODULE_PARM_DESC(asus_gid, "GID for entries in /proc/acpi/asus");

/* For each model, all features implemented,
 * those marked with R are relative to HOTK, A for absolute */
struct model_data {
	char *name;		/* name of the laptop________________A */
	char *mt_mled;		/* method to handle mled_____________R */
	char *mled_status;	/* node to handle mled reading_______A */
	char *mt_wled;		/* method to handle wled_____________R */
	char *wled_status;	/* node to handle wled reading_______A */
	char *mt_tled;		/* method to handle tled_____________R */
	char *tled_status;	/* node to handle tled reading_______A */
	char *mt_ledd;		/* method to handle LED display______R */
	char *mt_bt_switch;	/* method to switch Bluetooth on/off_R */
	char *bt_status;	/* no model currently supports this__? */
	char *mt_lcd_switch;	/* method to turn LCD on/off_________A */
	char *lcd_status;	/* node to read LCD panel state______A */
	char *brightness_up;	/* method to set brightness up_______A */
	char *brightness_down;	/* method to set brightness down ____A */
	char *brightness_set;	/* method to set absolute brightness_R */
	char *brightness_get;	/* method to get absolute brightness_R */
	char *brightness_status;/* node to get brightness____________A */
	char *display_set;	/* method to set video output________R */
	char *display_get;	/* method to get video output________R */
};

/*
 * This is the main structure, we can use it to store anything interesting
 * about the hotk device
 */
struct asus_hotk {
	struct acpi_device *device;	/* the device we are in */
	acpi_handle handle;		/* the handle of the hotk device */
	char status;			/* status of the hotk, for LEDs */
	u32 ledd_status;		/* status of the LED display */
	struct model_data *methods;	/* methods available on the laptop */
	u8 brightness;			/* brightness level */
	enum {
		A1x = 0,	/* A1340D, A1300F */
		A2x,		/* A2500H */
		A4G,		/* A4700G */
		D1x,		/* D1 */
		L2D,		/* L2000D */
		L3C,		/* L3800C */
		L3D,		/* L3400D */
		L3H,		/* L3H, L2000E, L5D */
		L4R,		/* L4500R */
		L5x,		/* L5800C */
		L8L,		/* L8400L */
		M1A,		/* M1300A */
		M2E,		/* M2400E, L4400L */
		M6N,		/* M6800N, W3400N */
		M6R,		/* M6700R, A3000G */
		P30,		/* Samsung P30 */
		S1x,		/* S1300A, but also L1400B and M2400A (L84F) */
		S2x,		/* S200 (J1 reported), Victor MP-XP7210 */
		W1N,		/* W1000N */
		W5A,		/* W5A */
		W3V,            /* W3030V */
		xxN,		/* M2400N, M3700N, M5200N, M6800N,
							 S1300N, S5200N*/
		A4S,            /* Z81sp */
		F3Sa,		/* (Centrino) */
		R1F,
		END_MODEL
	} model;		/* Models currently supported */
	u16 event_count[128];	/* Count for each event TODO make this better */
};

/* Here we go */
#define A1x_PREFIX "\\_SB.PCI0.ISA.EC0."
#define L3C_PREFIX "\\_SB.PCI0.PX40.ECD0."
#define M1A_PREFIX "\\_SB.PCI0.PX40.EC0."
#define P30_PREFIX "\\_SB.PCI0.LPCB.EC0."
#define S1x_PREFIX "\\_SB.PCI0.PX40."
#define S2x_PREFIX A1x_PREFIX
#define xxN_PREFIX "\\_SB.PCI0.SBRG.EC0."

static struct model_data model_conf[END_MODEL] = {
	/*
	 * TODO I have seen a SWBX and AIBX method on some models, like L1400B,
	 * it seems to be a kind of switch, but what for ?
	 */

	{
	 .name = "A1x",
	 .mt_mled = "MLED",
	 .mled_status = "\\MAIL",
	 .mt_lcd_switch = A1x_PREFIX "_Q10",
	 .lcd_status = "\\BKLI",
	 .brightness_up = A1x_PREFIX "_Q0E",
	 .brightness_down = A1x_PREFIX "_Q0F"},

	{
	 .name = "A2x",
	 .mt_mled = "MLED",
	 .mt_wled = "WLED",
	 .wled_status = "\\SG66",
	 .mt_lcd_switch = "\\Q10",
	 .lcd_status = "\\BAOF",
	 .brightness_set = "SPLV",
	 .brightness_get = "GPLV",
	 .display_set = "SDSP",
	 .display_get = "\\INFB"},

	{
	 .name = "A4G",
	 .mt_mled = "MLED",
/* WLED present, but not controlled by ACPI */
	 .mt_lcd_switch = xxN_PREFIX "_Q10",
	 .brightness_set = "SPLV",
	 .brightness_get = "GPLV",
	 .display_set = "SDSP",
	 .display_get = "\\ADVG"},

	{
	 .name = "D1x",
	 .mt_mled = "MLED",
	 .mt_lcd_switch = "\\Q0D",
	 .lcd_status = "\\GP11",
	 .brightness_up = "\\Q0C",
	 .brightness_down = "\\Q0B",
	 .brightness_status = "\\BLVL",
	 .display_set = "SDSP",
	 .display_get = "\\INFB"},

	{
	 .name = "L2D",
	 .mt_mled = "MLED",
	 .mled_status = "\\SGP6",
	 .mt_wled = "WLED",
	 .wled_status = "\\RCP3",
	 .mt_lcd_switch = "\\Q10",
	 .lcd_status = "\\SGP0",
	 .brightness_up = "\\Q0E",
	 .brightness_down = "\\Q0F",
	 .display_set = "SDSP",
	 .display_get = "\\INFB"},

	{
	 .name = "L3C",
	 .mt_mled = "MLED",
	 .mt_wled = "WLED",
	 .mt_lcd_switch = L3C_PREFIX "_Q10",
	 .lcd_status = "\\GL32",
	 .brightness_set = "SPLV",
	 .brightness_get = "GPLV",
	 .display_set = "SDSP",
	 .display_get = "\\_SB.PCI0.PCI1.VGAC.NMAP"},

	{
	 .name = "L3D",
	 .mt_mled = "MLED",
	 .mled_status = "\\MALD",
	 .mt_wled = "WLED",
	 .mt_lcd_switch = "