asus_acpi.c

来自「Linux Kernel 2.6.9 for OMAP1710」· C语言 代码 · 共 1,237 行 · 第 1/3 页

/*
 *  asus_acpi.c - Asus Laptop ACPI Extras
 *
 *
 *  Copyright (C) 2002, 2003, 2004 Julien Lerouge, 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.
 *
 *  TODO:
 *  add Fn key status
 *  Add mode selection on module loading (parameter) -> still necessary?
 *  Complete display switching -- may require dirty hacks or calling _DOS?
 */

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

#define ASUS_ACPI_VERSION "0.29"

#define PROC_ASUS       "asus"	//the directory
#define PROC_MLED       "mled"
#define PROC_WLED       "wled"
#define PROC_TLED       "tled"
#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"
#define ACPI_HOTK_HID           "ATK0100"

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

/*
 * Flags for hotk status
 */
#define MLED_ON     0x01	//is MLED ON ?
#define WLED_ON     0x02
#define TLED_ON     0x04

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_PARM(asus_uid, "i");
MODULE_PARM_DESC(uid, "UID for entries in /proc/acpi/asus.\n");
MODULE_PARM(asus_gid, "i");
MODULE_PARM_DESC(gid, "GID for entries in /proc/acpi/asus.\n");


/* 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_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;   //guess what ?______________________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, ...
	struct model_data *methods; //methods available on the laptop
	u8 brightness;              //brightness level
	enum {
		A1x = 0,  //A1340D, A1300F
		A2x,      //A2500H
		D1x,      //D1
		L2D,      //L2000D
		L3C,      //L3800C
		L3D,      //L3400D
		L3H,      //L3H, but also L2000E
		L4R,      //L4500R
		L5x,      //L5800C 
		L8L,      //L8400L
		M1A,      //M1300A
		M2E,      //M2400E, L4400L
		M6N,      //M6800N
		M6R,      //M6700R
		P30,	  //Samsung P30
		S1x,      //S1300A, but also L1400B and M2400A (L84F)
		S2x,      //S200 (J1 reported), Victor MP-XP7210
		xxN,      //M2400N, M3700N, M5200N, S1300N, S5200N, W1OOON
			  //(Centrino)
		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] = {
        /*
	 * Those pathnames are relative to the HOTK / ATKD device :
	 *       - mt_mled
	 *       - mt_wled
	 *       - brightness_set
	 *       - brightness_get
	 *       - display_set
	 *       - display_get
	 *
	 * 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              = "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     = "\\Q10",
		.lcd_status        = "\\BKLG",
		.brightness_set    = "SPLV",
		.brightness_get    = "GPLV",
		.display_set       = "SDSP",
		.display_get       = "\\INFB"
	},

	{
		.name              = "L3H",
		.mt_mled           = "MLED",
		.mt_wled           = "WLED",
		.mt_lcd_switch     = "EHK",
		.lcd_status        = "\\_SB.PCI0.PM.PBC",
		.brightness_set    = "SPLV",
		.brightness_get    = "GPLV",
		.display_set       = "SDSP",
		.display_get       = "\\INFB"
	},

	{
		.name              = "L4R",
		.mt_mled           = "MLED",
		.mt_wled           = "WLED",
		.wled_status       = "\\_SB.PCI0.SBRG.SG13",
		.mt_lcd_switch     = xxN_PREFIX "_Q10",
		.lcd_status        = "\\_SB.PCI0.SBSM.SEO4",
		.brightness_set    = "SPLV",
		.brightness_get    = "GPLV", 
		.display_set       = "SDSP",
		.display_get       = "\\_SB.PCI0.P0P1.VGA.GETD"
	},

	{
		.name              = "L5x",
		.mt_mled           = "MLED",
/* WLED present, but not controlled by ACPI */
		.mt_tled           = "TLED",
		.mt_lcd_switch     = "\\Q0D",
		.lcd_status        = "\\BAOF",
		.brightness_set    = "SPLV",
		.brightness_get    = "GPLV",
		.display_set       = "SDSP",
		.display_get       = "\\INFB"
	},

	{
		.name              = "L8L"
/* No features, but at least support the hotkeys */
	},

	{
		.name              = "M1A",
		.mt_mled           = "MLED",
		.mt_lcd_switch     = M1A_PREFIX "Q10",
		.lcd_status        = "\\PNOF",
		.brightness_up     = M1A_PREFIX "Q0E",
		.brightness_down   = M1A_PREFIX "Q0F",
		.brightness_status = "\\BRIT",
		.display_set       = "SDSP",
		.display_get       = "\\INFB"
	},

	{
		.name              = "M2E",
		.mt_mled           = "MLED",
		.mt_wled           = "WLED",
		.mt_lcd_switch     = "\\Q10",
		.lcd_status        = "\\GP06",
		.brightness_set    = "SPLV",
		.brightness_get    = "GPLV",
		.display_set       = "SDSP",
		.display_get       = "\\INFB"
	},

	{
		.name              = "M6N",
		.mt_mled           = "MLED",
		.mt_wled           = "WLED",
		.wled_status       = "\\_SB.PCI0.SBRG.SG13",
		.mt_lcd_switch     = xxN_PREFIX "_Q10",
		.lcd_status        = "\\_SB.BKLT",
		.brightness_set    = "SPLV",
		.brightness_get    = "GPLV",
		.display_set       = "SDSP",
		.display_get       = "\\SSTE"
	},
	{
		.name              = "M6R",
		.mt_mled           = "MLED",
		.mt_wled           = "WLED",
		.mt_lcd_switch     = xxN_PREFIX "_Q10",
		.lcd_status        = "\\_SB.PCI0.SBSM.SEO4",
		.brightness_set    = "SPLV",
		.brightness_get    = "GPLV",
		.display_set       = "SDSP",
		.display_get       = "\\SSTE"
	},


	{
		.name              = "P30",
		.mt_wled           = "WLED",
		.mt_lcd_switch     = P30_PREFIX "_Q0E",
		.lcd_status        = "\\BKLT",
		.brightness_up     = P30_PREFIX "_Q68",
		.brightness_down   = P30_PREFIX "_Q69",
		.brightness_get    = "GPLV",
		.display_set       = "SDSP",
		.display_get       = "\\DNXT"
	},

	{
		.name              = "S1x",
		.mt_mled           = "MLED",
		.mled_status       = "\\EMLE",
		.mt_wled           = "WLED",
		.mt_lcd_switch     = S1x_PREFIX "Q10" ,
		.lcd_status        = "\\PNOF",
		.brightness_set    = "SPLV",
		.brightness_get    = "GPLV"
	},

	{
		.name              = "S2x",
		.mt_mled           = "MLED",
		.mled_status       = "\\MAIL",
		.mt_lcd_switch     = S2x_PREFIX "_Q10",
		.lcd_status        = "\\BKLI",
		.brightness_up     = S2x_PREFIX "_Q0B",
		.brightness_down   = S2x_PREFIX "_Q0A"
	},

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

/* procdir we use */
static struct proc_dir_entry *asus_proc_dir;

/*
 * This header is made available to allow proper configuration given model,
 * revision number , ... this info cannot go in struct asus_hotk because it is
 * available before the hotk
 */
static struct acpi_table_header *asus_info;

/* The actual device the driver binds to */
static struct asus_hotk *hotk;

/*
 * The hotkey driver declaration
 */
static int asus_hotk_add(struct acpi_device *device);
static int asus_hotk_remove(struct acpi_device *device, int type);
static struct acpi_driver asus_hotk_driver = {
	.name = 	ACPI_HOTK_NAME,
	.class = 	ACPI_HOTK_CLASS,
	.ids = 		ACPI_HOTK_HID,
	.ops = 		{
				.add = 		asus_hotk_add,
				.remove = 	asus_hotk_remove,
			},
};

/* 
 * This function evaluates an ACPI method, given an int as parameter, the
 * method is searched within the scope of the handle, can be NULL. The output
 * of the method is written is output, which can also be NULL
 *
 * returns 1 if write is successful, 0 else. 
 */