/*
* asus_acpi.c - Asus Laptop ACPI Extras
*
*
* Copyright (C) 2002, 2003 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:
* 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?
*/
#include <linux/config.h>
#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>
#define ASUS_ACPI_VERSION "0.26"
#define PROC_ASUS "asus" //the directory
#define PROC_MLED "mled"
#define PROC_WLED "wled"
#define PROC_INFOS "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
MODULE_AUTHOR("Julien Lerouge, Karol Kozimor");
MODULE_DESCRIPTION(ACPI_HOTK_NAME);
MODULE_LICENSE("GPL");
static uid_t asus_uid = 0;
static gid_t asus_gid = 0;
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 */
struct model_data {
char *name; //name of the laptop
char *mt_mled; //method to handle mled
char *mled_status; //node to handle mled reading
char *mt_wled; //method to handle wled
char *wled_status; //node to handle wled reading
char *mt_lcd_switch; //method to turn LCD ON/OFF
char *lcd_status; //node to read LCD panel state
char *brightness_up; //method to set brightness up
char *brightness_down; //guess what ?
char *brightness_set; //method to set absolute brightness
char *brightness_get; //method to get absolute brightness
char *brightness_status;//node to get brightness
char *display_set; //method to set video output
char *display_get; //method to get video output
};
/*
* 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; //brighness level
enum {
A1X=0, //A1340D, A1300F
A2X, //A2500H
D1X, //D1
L1X, //L1400B
L2X, //L2000D -> TODO check Q11 (Fn+F8)
// Calling this method simply hangs the
// computer, ISMI method hangs the laptop.
L3D, //L3400D
L3X, //L3C
L5X, //L5C TODO this model seems to have one more
// LED, add support
M2X, //M2400E
M3N, //M3700N, but also S1300N -> TODO WLED
S1X, //S1300A -> TODO special keys do not work ?
S2X, //S200 (J1 reported), Victor MP-XP7210
//TODO A1370D does not seem to have an ATK device
// L8400 model doesn't have ATK
END_MODEL
} model; //Models currently supported
u16 event_count[128]; //count for each event TODO make this better
};
/* Here we go */
#define L3X_PREFIX "\\_SB.PCI0.PX40.ECD0."
#define S1X_PREFIX "\\_SB.PCI0.PX40."
#define L1X_PREFIX S1X_PREFIX
#define A1X_PREFIX "\\_SB.PCI0.ISA.EC0."
#define S2X_PREFIX A1X_PREFIX
#define M3N_PREFIX "\\_SB.PCI0.SBRG.EC0."
static struct model_data model_conf[END_MODEL] = {
/*
* name| mled |mled read| wled |wled read| lcd sw |lcd read |
* br up|br down | br set | br read | br status|set disp | get disp
*
* br set and read shall be in hotk device !
* same for set disp
*
* 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 ?
*
*/
{"A1X", "MLED", "\\MAIL", NULL, NULL, A1X_PREFIX "_Q10", "\\BKLI",
A1X_PREFIX "_Q0E", A1X_PREFIX "_Q0F", NULL, NULL, NULL, NULL, NULL},
{"A2X", "MLED", NULL, "WLED", "\\SG66", "\\Q10", "\\BAOF",
"\\Q0E", "\\Q0F", "SPLV", "GPLV", "\\CMOD", "SDSP", "\\INFB"},
{"D1X", "MLED", NULL, NULL, NULL, "\\Q0D", "\\GP11",
"\\Q0C", "\\Q0B", NULL, NULL, "\\BLVL", "SDSP","\\INFB"},
{"L1X", "MLED", NULL, "WLED", NULL, L1X_PREFIX "Q10", "\\PNOF",
L1X_PREFIX "Q0F", L1X_PREFIX "Q0E", "SPLV", "GPLV", "\\BRIT", NULL, NULL},
{"L2X", "MLED", "\\SGP6", "WLED", "\\RCP3", "\\Q10", "\\SGP0",
"\\Q0E", "\\Q0F", NULL, NULL, NULL, "SDSP", "\\INFB"},
{"L3D", "MLED", "\\MALD", "WLED", NULL, "\\Q10", "\\BKLG",
"\\Q0E", "\\Q0F", "SPLV", "GPLV", "\\BLVL", "SDSP", "\\INFB"},
{"L3X", "MLED", NULL, "WLED", NULL, L3X_PREFIX "_Q10", "\\GL32",
L3X_PREFIX "_Q0F", L3X_PREFIX "_Q0E", "SPLV", "GPLV", "\\BLVL", "SDSP",
"\\_SB.PCI0.PCI1.VGAC.NMAP"},
{"L5X", "MLED", NULL, "WLED", "WRED", "\\Q0D", "\\BAOF",
"\\Q0C","\\Q0B", "SPLV", "GPLV", NULL, "SDSP", "\\INFB"},
{"M2X", "MLED", NULL, "WLED", NULL, "\\Q10", "\\GP06",
"\\Q0E","\\Q0F", "SPLV", "GPLV", NULL, "SDSP", "\\INFB"},
{"M3N", "MLED", NULL, "WLED", "\\PO33", M3N_PREFIX "_Q10", "\\BKLT",
M3N_PREFIX "_Q0F", M3N_PREFIX "_Q0E", "SPLV", "GPLV", "\\LBTN", "SDSP",
"\\ADVG"},
{"S1X", "MLED", "\\EMLE", "WLED", NULL, S1X_PREFIX "Q10", "\\PNOF",
S1X_PREFIX "Q0F", S1X_PREFIX "Q0E", "SPLV", "GPLV", "\\BRIT", NULL, NULL},
{"S2X", "MLED", "\\MAIL", NULL, NULL, S2X_PREFIX "_Q10", "\\BKLI",
S2X_PREFIX "_Q0B", S2X_PREFIX "_Q0A", NULL, NULL, NULL, NULL, NULL}
};
/* procdir we use */
static struct proc_dir_entry *asus_proc_dir = NULL;
/*
* 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 = NULL;
/*
* 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.
*/
static int write_acpi_int(acpi_handle handle, const char *method, int val,
struct acpi_buffer *output)
{
struct acpi_object_list params; //list of input parameters (an int here)
union acpi_object in_obj; //the only param we use
acpi_status status;
params.count = 1;
params.pointer = &in_obj;
in_obj.type = ACPI_TYPE_INTEGER;
in_obj.integer.value = val;
status = acpi_evaluate_object(handle, (char *) method, ¶ms, output);
return (status == AE_OK);
}
static int read_acpi_int(acpi_handle handle, const char *method, int *val)
{
struct acpi_buffer output;
union acpi_object out_obj;
acpi_status status;
output.length = sizeof(out_obj);
output.pointer = &out_obj;
status = acpi_evaluate_object(handle, (char *) method, NULL, &output);
*val = out_obj.integer.value;
return (status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER);
}
/*
* We write our info in page, we begin at offset off and cannot write more
* than count bytes. We set eof to 1 if we handle those 2 values. We return the
* number of bytes written in page
*/
static int
proc_read_info(char *page, char **start, off_t off, int count, int *eof,
void *data)
{
int len = 0;
int sfun;
struct asus_hotk *hotk = (struct asus_hotk *) data;
char buf[16]; //enough for all info
/*
* We use the easy way, we don't care of off and count, so we don't set eof
* to 1
*/
len += sprintf(page, ACPI_HOTK_NAME " " ASUS_ACPI_VERSION "\n");
len += sprintf(page + len, "Model reference : %s\n",
hotk->methods->name);
if(read_acpi_int(hotk->handle, "SFUN", &sfun))
len += sprintf(page + len, "SFUN value : 0x%04x\n", sfun);
if (asus_info) {
snprintf(buf, 16, "%d", asus_info->length);
len += sprintf(page + len, "DSDT length : %s\n", buf);
snprintf(buf, 16, "%d", asus_info->checksum);
len += sprintf(page + len, "DSDT checksum : %s\n", buf);
snprintf(buf, 16, "%d", asus_info->revision);
len += sprintf(page + len, "DSDT revision : %s\n", buf);
snprintf(buf, 7, "%s", asus_info->oem_id);
len += sprintf(page + len, "OEM id : %s\n", buf);
snprintf(buf, 9, "%s", asus_info->oem_table_id);
len += sprintf(page + len, "OEM table id : %s\n", buf);
snprintf(buf, 16, "%x", asus_info->oem_revision);
len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
snprintf(buf, 5, "%s", asus_info->asl_compiler_id);
len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
snprintf(buf, 16, "%x", asus_info->asl_compiler_revision);
len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
}
return len;
}
/*
* proc file handlers
*/
static int
proc_read_mled(char *page, char **start, off_t off, int count, int *eof,
void *data)
{
int len = 0;
struct asus_hotk *hotk = (struct asus_hotk *) data;
int led_status = 0;
/*
* We use the easy way, we don't care of off and count, so we don't set eof
* to 1
*/
if (hotk->methods->mled_status) {
if (read_acpi_int(NULL, hotk->methods->mled_status,
&led_status))
len = sprintf(page, "%d\n", led_status);
else
printk(KERN_WARNING "Asus ACPI: Error reading MLED "
"status\n");
} else {
len = sprintf(page, "%d\n", (hotk->status & MLED_ON) ? 1 : 0);
}
return len;
}
static int
proc_write_mled(struct file *file, const char *buffer,
unsigned long count, void *data)
{
int value;
int led_out = 0;
struct asus_hotk *hotk = (struct asus_hotk *) data;
/* scan expression. Multiple expressions may be delimited with ; */
if (sscanf(buffer, "%i", &value) == 1)
led_out = ~value & 1;
hotk->status =
(value) ? (hotk->status | MLED_ON) : (hotk->status & ~MLED_ON);
/* We don't have to check mt_mled exists if we are here :) */
if (!write_acpi_int(hotk->handle, hotk->methods->mt_mled, led_out,
NULL))
printk(KERN_WARNING "Asus ACPI: MLED write failed\n");
return count;
}
/*
* We write our info in page, we begin at offset off and cannot write more
* than count bytes. We set eof to 1 if we handle those 2 values. We return the
* number of bytes written in page
*/
static int
proc_read_wled(char *page, char **start, off_t off, int count, int *eof,
void *data)
{
int len = 0;
struct asus_hotk *hotk = (struct asus_hotk *) data;
int led_status;
if (hotk->methods->wled_status) {
if (read_acpi_int(NULL, hotk->methods->wled_status,
&led_status))
len = sprintf(page, "%d\n", led_status);
else
printk(KERN_WARNING "Asus ACPI: Error reading WLED "
"status\n");
} else {
len = sprintf(page, "%d\n", (hotk->status & WLED_ON) ? 1 : 0);
}
return len;
}
static int
proc_write_wled(struct file *file, const char *buffer,
unsigned long count, void *data)
{
int value;
int led_out = 0;
struct asus_hotk *hotk = (struct asus_hotk *) data;
/* scan expression. Multiple expressions may be delimited with ; */
if (sscanf(buffer, "%i", &value) == 1)
led_out = value & 1;
hotk->status =
(value) ? (hotk->status | WLED_ON) : (hotk->status & ~WLED_ON);
/* We don't have to check if mt_wled exists if we are here :) */
if (!write_acpi_int(hotk->handle, hotk->methods->mt_wled, led_out,
NULL))
printk(KERN_WARNING "Asus ACPI: WLED write failed\n");
return count;
}
static int get_lcd_state(struct asus_hotk *hotk)
{
int lcd = 0;
/* We don't have to check anything, if we are here */
if (!read_acpi_int(NULL, hotk->methods->lcd_status, &lcd))
printk(KERN_WARNING "Asus ACPI: Error reading LCD status\n");
if (hotk->model == L2X)
lcd = ~lcd;
return (lcd & 1);
}
static int
proc_read_lcd(char *page, char **start, off_t off, int count, int *eof,
void *data)
{
return sprintf(page, "%d\n", get_lcd_state((struct asus_hotk *) data));
}
static int
proc_write_lcd(struct file *file, const char *buffer,
unsigned long count, void *data)
{
int value;
int lcd = 0;
acpi_status status = 0;
int lcd_status = 0;
struct asus_hotk *hotk = (struct asus_hotk *) data;
/* scan expression. Multiple expressions may be delimited with ; */
if (sscanf(buffer, "%i", &value) == 1)
lcd = value & 1;
lcd_status = get_lcd_state(hotk);
if (lcd_status != lcd) {
/* switch */
status =
acpi_evaluate_object(NULL, hotk->methods->mt_lcd_switch,
NULL, NULL);
if (ACPI_FAILURE(status))
printk(KERN_WARNING "Asus ACPI: Error switching LCD\n");
}
return count;
}
/*
* Change the brightness level
*/
static void set_brightness(int value, struct asus_hotk *hotk)
{
acpi_status status = 0;
/* SPLV laptop */
if(hotk->methods->brightness_set) {
if (!write_acpi_int(hotk->handle, hotk->methods->brightness_set,
value, NULL))
printk(KERN_WARNING "Asus ACPI: Error changing brightness\n");
return;
}
/* No SPLV method if we are here, act as appropriate */
value -= hotk->brightness;
while (value != 0) {
status = acpi_evaluate_object(NULL, (value > 0) ?
hotk->methods->brightness_up :
hotk->methods->brightness_down,
NULL, NULL);
(value > 0) ? value-- : value++;
if (ACPI_FAILURE(status))
printk(KERN_WARNING "Asus ACPI: Error changing brightness\n");
}
return;
}
static int read_brightness(struct asus_hotk *hotk)
{
int value;
if(hotk->methods->brightness_get) { /* SPLV/GPLV laptop */
if (!read_acpi_int(hotk->handle, hotk->methods->brightness_get,
&value))
printk(KERN_WARNING "Asus ACPI: Error reading brightness\n");
} else if (hotk->methods->brightness_status) { /* For D1 for example */
if (!read_acpi_int(NULL, hotk->methods->brightness_status,
&value))
printk(KERN_WARNING "Asus ACPI: Error reading brightness\n");
} else /* No GPLV method */
value = hotk->brightness;
return value;
}
static int
proc_read_brn(char *page, char **start, off_t off, int count, int *eof,
void *data)
{
struct asus_hotk *hotk = (struct asus_hotk *) data;
return sprintf(page, "%d\n", read_brightness(hotk));
}
static int
proc_write_brn(struct file *file, const char *buffer,
unsigned long count, void *data)
{
int value;
struct asus_hotk *hotk = (struct asus_hotk *) data;
/* scan expression. Multiple expressions may be delimited with ; */
if (sscanf(buffer, "%d", &value) == 1) {
value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
/* 0 <= value <= 15 */
set_brightness(value, hotk);
} else {
printk(KERN_WARNING "Asus ACPI: Error reading user input\n");
}
return count;
}
static void set_display(int value, struct asus_hotk *hotk)
{
/* no sanity check needed for now */
if (!write_acpi_int(hotk->handle, hotk->methods->display_set,
value, NULL))
printk(KERN_WARNING "Asus ACPI: Error setting display\n");
return;
}
/*
* Now, *this* one could be more user-friendly, but so far, no-one has
* complained. The significance of bits is the same as in proc_write_disp()
*/
static int
proc_read_disp(char *page, char **start, off_t off, int count, int *eof,
void *data)
{
int value = 0;
struct asus_hotk *hotk = (struct asus_hotk *) data;
if (!read_acpi_int(hotk->handle, hotk->methods->display_get, &value))
printk(KERN_WARNING "Asus ACPI: Error reading display status\n");
return sprintf(page, "%d\n", value);
}
/*
* Experimental support for display switching. As of now: 0x01 should activate
* the LCD output, 0x02 should do for CRT, and 0x04 for TV-Out. Any combination
* (bitwise) of these will suffice. I never actually tested 3 displays hooked up
* simultaneously, so be warned.
*/
static int
proc_write_disp(struct file *file, const char *buffer,
unsigned long count, void *data)
{
int value;
struct asus_hotk *hotk = (struct asus_hotk *) data;
/* scan expression. Multiple expressions may be delimited with ; */
if (sscanf(buffer, "%d", &value) == 1)
set_display(value, hotk);
else {
printk(KERN_WARNING "Asus ACPI: Error reading user input\n");
}
return count;
}
static int __init asus_hotk_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *proc;
struct asus_hotk *hotk = acpi_driver_data(device);
mode_t mode;
/*
* If parameter uid or gid is not changed, keep the default setting for
* our proc entries (-rw-rw-rw-) else, it means we care about security,
* and then set to -rw-rw----
*/
if ((asus_uid == 0) && (asus_gid == 0)){
mode = S_IFREG | S_IRUGO | S_IWUGO;
} else {
mode = S_IFREG | S_IRUSR | S_IRGRP | S_IWUSR | S_IWGRP;
}
acpi_device_dir(device) = asus_proc_dir;
if (!acpi_device_dir(device))
return(-ENODEV);
proc = create_proc_entry(PROC_INFOS, mode, acpi_device_dir(device));
if (proc) {
proc->read_proc = proc_read_info;
proc->data = acpi_driver_data(device);
proc->owner = THIS_MODULE;
proc->uid = asus_uid;
proc->gid = asus_gid;;
} else {
printk(KERN_WARNING " Unable to create " PROC_INFOS
" fs entry\n");
}
if (hotk->methods->mt_wled) {
proc = create_proc_entry(PROC_WLED, mode, acpi_device_dir(device));
if (proc) {
proc->write_proc = proc_write_wled;
proc->read_proc = proc_read_wled;
proc->data = acpi_driver_data(device);
proc->owner = THIS_MODULE;
proc->uid = asus_uid;
proc->gid = asus_gid;;
} else {
printk(KERN_WARNING " Unable to create " PROC_WLED
" fs entry\n");
}
}
if (hotk->methods->mt_mled) {
proc = create_proc_entry(PROC_MLED, mode, acpi_device_dir(device));
if (proc) {
proc->write_proc = proc_write_mled;
proc->read_proc = proc_read_mled;
proc->data = acpi_driver_data(device);
proc->owner = THIS_MODULE;
proc->uid = asus_uid;
proc->gid = asus_gid;;
} else {
printk(KERN_WARNING " Unable to create " PROC_MLED
" fs entry\n");
}
}
/*
* We need both read node and write method as LCD switch is also accessible
* from keyboard
*/
if (hotk->methods->mt_lcd_switch && hotk->methods->lcd_status) {
proc = create_proc_entry(PROC_LCD, mode, acpi_device_dir(device));
if (proc) {
proc->write_proc = proc_write_lcd;
proc->read_proc = proc_read_lcd;
proc->data = acpi_driver_data(device);
proc->owner = THIS_MODULE;
proc->uid = asus_uid;
proc->gid = asus_gid;;
} else {
printk(KERN_WARNING " Unable to create " PROC_LCD
" fs entry\n");
}
}
if ((hotk->methods->brightness_up && hotk->methods->brightness_down) ||
(hotk->methods->brightness_get && hotk->methods->brightness_get)) {
proc = create_proc_entry(PROC_BRN, mode, acpi_device_dir(device));
if (proc) {
proc->write_proc = proc_write_brn;
proc->read_proc = proc_read_brn;
proc->data = acpi_driver_data(device);
proc->owner = THIS_MODULE;
proc->uid = asus_uid;
proc->gid = asus_gid;;
} else {
printk(KERN_WARNING " Unable to create " PROC_BRN
" fs entry\n");
}
}
if (hotk->methods->display_set) {
proc = create_proc_entry(PROC_DISP, mode, acpi_device_dir(device));
if (proc) {
proc->write_proc = proc_write_disp;
proc->read_proc = proc_read_disp;
proc->data = acpi_driver_data(device);
proc->owner = THIS_MODULE;
proc->uid = asus_uid;
proc->gid = asus_gid;;
} else {
printk(KERN_WARNING " Unable to create " PROC_DISP
" fs entry\n");
}
}
return 0;
}
static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
{
/* TODO Find a better way to handle events count. Here, in data, we receive
* the hotk, so we can do anything!
*/
struct asus_hotk *hotk = (struct asus_hotk *) data;
if (!hotk)
return;
if ((event & ~((u32) BR_UP)) < 16) {
hotk->brightness = (event & ~((u32) BR_UP));
} else if ((event & ~((u32) BR_DOWN)) < 16 ) {
hotk->brightness = (event & ~((u32) BR_DOWN));
}
acpi_bus_generate_event(hotk->device, event,
hotk->event_count[event % 128]++);
return;
}
/*
* This function is used to initialize the hotk with right values. In this
* method, we can make all the detection we want, and modify the hotk struct
*/
static int __init asus_hotk_get_info(struct asus_hotk *hotk)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_buffer dsdt = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *model = NULL;
int bsts_result;
acpi_status status;
/*
* Get DSDT headers early enough to allow for differentiating between
* models, but late enough to allow acpi_bus_register_driver() to fail
* before doing anything ACPI-specific. Should we encounter a machine,
* which needs special handling (i.e. its hotkey device has a different
* HID), this bit will be moved. A global variable asus_info contains
* the DSDT header.
*/
status = acpi_get_table(ACPI_TABLE_DSDT, 1, &dsdt);
if (ACPI_FAILURE(status))
printk(KERN_WARNING " Couldn't get the DSDT table header\n");
else
asus_info = (struct acpi_table_header *) dsdt.pointer;
/* We have to write 0 on init this far for all ASUS models */
if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
printk(KERN_ERR " Hotkey initialization failed\n");
return -ENODEV;
}
/* For testing purposes */
if (!read_acpi_int(hotk->handle, "BSTS", &bsts_result))
printk(KERN_WARNING " Error calling BSTS\n");
else if (bsts_result)
printk(KERN_NOTICE " BSTS called, 0x%02x returned\n", bsts_result);
/*
* Here, we also use asus_info to make decision. For example, on INIT
* method, S1X and L1X models both reports to be L84F, but they don't
* have the same methods (L1X has WLED, S1X don't)
*/
model = (union acpi_object *) buffer.pointer;
if (model->type == ACPI_TYPE_STRING) {
printk(KERN_NOTICE " %s model detected, ", model->string.pointer);
}
hotk->model = END_MODEL;
if (strncmp(model->string.pointer, "L3D", 3) == 0)
hotk->model = L3D;
/*
* L2B has same settings that L3X, except for GL32, but as
* there is no node to get the LCD status, and as GL32 is never
* used anywhere else, I assume it's safe, even if lcd get is
* broken for this model (TODO fix it ?)
*/
else if (strncmp(model->string.pointer, "L3", 2) == 0 ||
strncmp(model->string.pointer, "L2B", 3) == 0)
hotk->model = L3X;
else if (strncmp(model->string.pointer, "M2", 2) == 0)
hotk->model = M2X;
else if (strncmp(model->string.pointer, "M3N", 3) == 0 ||
strncmp(model->string.pointer, "S1N", 3) == 0)
hotk->model = M3N; /* S1300N is similar enough */
else if (strncmp(model->string.pointer, "L2", 2) == 0)
hotk->model = L2X;
else if (strncmp(model->string.pointer, "L8", 2) == 0) {
/* S1300A reports L84F, but L1400B too */
if (asus_info) {
if (strncmp(asus_info->oem_table_id, "L1", 2) == 0)
hotk->model = L1X;
} else
hotk->model = S1X;
}
else if (strncmp(model->string.pointer, "D1", 2) == 0)
hotk->model = D1X;
else if (strncmp(model->string.pointer, "A1", 2) == 0)
hotk->model = A1X;
else if (strncmp(model->string.pointer, "A2", 2) == 0)
hotk->model = A2X;
else if (strncmp(model->string.pointer, "J1", 2) == 0)
hotk->model = S2X;
else if (strncmp(model->string.pointer, "L5", 2) == 0)
hotk->model = L5X;
if (hotk->model == END_MODEL) {
/* By default use the same values, as I don't know others */
printk("unsupported, trying default values, supply the "
"developers with your DSDT\n");
hotk->model = L2X;
} else {
printk("supported\n");
}
hotk->methods = &model_conf[hotk->model];
acpi_os_free(model);
return AE_OK;
}
static int __init asus_hotk_check(struct asus_hotk *hotk)
{
int result = 0;
if (!hotk)
return(-EINVAL);
result = acpi_bus_get_status(hotk->device);
if (result)
return(result);
if (hotk->device->status.present) {
result = asus_hotk_get_info(hotk);
} else {
printk(KERN_ERR " Hotkey device not present, aborting\n");
return(-EINVAL);
}
return(result);
}
static int __init asus_hotk_add(struct acpi_device *device)
{
struct asus_hotk *hotk = NULL;
acpi_status status = AE_OK;
int result;
if (!device)
return(-EINVAL);
printk(KERN_NOTICE "Asus Laptop ACPI Extras version %s\n",
ASUS_ACPI_VERSION);
hotk =
(struct asus_hotk *) kmalloc(sizeof(struct asus_hotk), GFP_KERNEL);
if (!hotk)
return(-ENOMEM);
memset(hotk, 0, sizeof(struct asus_hotk));
hotk->handle = device->handle;
sprintf(acpi_device_name(device), "%s", ACPI_HOTK_DEVICE_NAME);
sprintf(acpi_device_class(device), "%s", ACPI_HOTK_CLASS);
acpi_driver_data(device) = hotk;
hotk->device = device;
result = asus_hotk_check(hotk);
if (result)
goto end;
result = asus_hotk_add_fs(device);
if (result)
goto end;
/*
* We install the handler, it will receive the hotk in parameter, so, we
* could add other data to the hotk struct
*/
status = acpi_install_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
asus_hotk_notify, hotk);
if (ACPI_FAILURE(status))
printk(KERN_ERR " Error installing notify handler\n");
/* For laptops without GPLV: init the hotk->brightness value */
if ((!hotk->methods->brightness_get) && (!hotk->methods->brightness_status) &&
(hotk->methods->brightness_up && hotk->methods->brightness_down)) {
status = acpi_evaluate_object(NULL, hotk->methods->brightness_down,
NULL, NULL);
if (ACPI_FAILURE(status))
printk(KERN_WARNING " Error changing brightness\n");
else {
status = acpi_evaluate_object(NULL, hotk->methods->brightness_up,
NULL, NULL);
if (ACPI_FAILURE(status))
printk(KERN_WARNING " Strange, error changing"
" brightness\n");
}
}
end:
if (result) {
kfree(hotk);
}
return(result);
}
static int asus_hotk_remove(struct acpi_device *device, int type)
{
acpi_status status = 0;
struct asus_hotk *hotk = NULL;
if (!device || !acpi_driver_data(device))
return(-EINVAL);
hotk = (struct asus_hotk *) acpi_driver_data(device);
status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
asus_hotk_notify);
if (ACPI_FAILURE(status))
printk(KERN_ERR "Asus ACPI: Error removing notify handler\n");
kfree(hotk);
return(0);
}
static int __init asus_acpi_init(void)
{
int result;
asus_proc_dir = proc_mkdir(PROC_ASUS, acpi_root_dir);
if (!asus_proc_dir) {
printk(KERN_ERR "Asus ACPI: Unable to create /proc entry");
return(-ENODEV);
}
asus_proc_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&asus_hotk_driver);
if (result < 0) {
remove_proc_entry(PROC_ASUS, acpi_root_dir);
return(-ENODEV);
}
return(0);
}
static void __exit asus_acpi_exit(void)
{
acpi_bus_unregister_driver(&asus_hotk_driver);
remove_proc_entry(PROC_ASUS, acpi_root_dir);
acpi_os_free(asus_info);
return;
}
module_init(asus_acpi_init);
module_exit(asus_acpi_exit);
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