Commit 5166c979 authored by Andy Grover's avatar Andy Grover

ACPI: Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)

parent 76751fb8
...@@ -135,6 +135,31 @@ config ACPI_NUMA ...@@ -135,6 +135,31 @@ config ACPI_NUMA
bool "NUMA support" if NUMA && (IA64 && !IA64_HP_SIM || X86 && ACPI && !ACPI_HT_ONLY && !X86_64) bool "NUMA support" if NUMA && (IA64 && !IA64_HP_SIM || X86 && ACPI && !ACPI_HT_ONLY && !X86_64)
default y if IA64 && IA64_SGI_SN default y if IA64 && IA64_SGI_SN
config ACPI_ASUS
tristate "ASUS/Medion Laptop Extras"
depends on X86 && ACPI && !ACPI_HT_ONLY
---help---
This driver provides support for extra features of ACPI-compatible
ASUS laptops. As some of Medion laptops are made by ASUS, it may also
support some Medion laptops (such as 9675 for example). It makes all
the extra buttons generate standard ACPI events that go through
/proc/acpi/events, and (on some models) adds support for changing the
display brightness and output, switching the LCD backlight on and off,
and most importantly, allows you to blink those fancy LEDs intended
for reporting mail and wireless status.
All settings are changed via /proc/acpi/asus directory entries. Owner
and group for these entries can be set with asus_uid and asus_gid
parameters.
More information and a userspace daemon for handling the extra buttons
at <http://sourceforge.net/projects/acpi4asus/>.
If you have an ACPI-compatible ASUS laptop, say Y or M here. This
driver is still under development, so if your laptop is unsupported or
something works not quite as expected, please use the mailing list
available on the above page (acpi4asus-user@lists.sourceforge.net)
config ACPI_TOSHIBA config ACPI_TOSHIBA
tristate "Toshiba Laptop Extras" tristate "Toshiba Laptop Extras"
depends on X86 && ACPI && !ACPI_HT_ONLY depends on X86 && ACPI && !ACPI_HT_ONLY
......
...@@ -44,5 +44,6 @@ obj-$(CONFIG_ACPI_THERMAL) += thermal.o ...@@ -44,5 +44,6 @@ obj-$(CONFIG_ACPI_THERMAL) += thermal.o
obj-$(CONFIG_ACPI_SYSTEM) += system.o event.o obj-$(CONFIG_ACPI_SYSTEM) += system.o event.o
obj-$(CONFIG_ACPI_DEBUG) += debug.o obj-$(CONFIG_ACPI_DEBUG) += debug.o
obj-$(CONFIG_ACPI_NUMA) += numa.o obj-$(CONFIG_ACPI_NUMA) += numa.o
obj-$(CONFIG_ACPI_ASUS) += asus_acpi.o
obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o
obj-$(CONFIG_ACPI_BUS) += scan.o obj-$(CONFIG_ACPI_BUS) += scan.o
/*
* 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/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 "0.24a"
#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 {
L2X = 0, //L200D -> TODO check Q11 (Fn+F8)
// Calling this method simply hang the
// computer, ISMI method hangs the laptop.
L3X, //L3C
L3D, //L3400D
M2X, //M2400E
S1X, //S1300A -> TODO special keys do not work ?
D1X, //D1
L1X, //L1400B
A1X, //A1340D, A1300F
J1X, //S200 (J1)
//TODO A1370D does not seems to have a 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 J1X_PREFIX A1X_PREFIX
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 ?
*
*/
{"L2X", "MLED", "\\SGP6", "WLED", "\\RCP3", "\\Q10", "\\SGP0",
"\\Q0E", "\\Q0F", NULL, NULL, NULL, "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"},
{"L3D", "MLED", "\\MALD", "WLED", NULL, "\\Q10", "\\BKLG",
"\\Q0E", "\\Q0F", "SPLV", "GPLV", "\\BLVL", "SDSP", "\\INFB"},
{"M2X", "MLED", NULL, "WLED", NULL, "\\Q10", "\\GP06",
"\\Q0E","\\Q0F", "SPLV", "GPLV", NULL, "SDSP", "\\INFB"},
{"S1X", "MLED", "\\EMLE", "WLED", NULL, S1X_PREFIX "Q10", "\\PNOF",
S1X_PREFIX "Q0F", S1X_PREFIX "Q0E", "SPLV", "GPLV", "\\BRIT", NULL, NULL},
{"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},
{"A1X", "MLED", "\\MAIL", NULL, NULL, A1X_PREFIX "_Q10", "\\BKLI",
A1X_PREFIX "_Q0E", A1X_PREFIX "_Q0F", NULL, NULL, NULL, NULL, NULL},
{"J1X", "MLED", "\\MAIL", NULL, NULL, J1X_PREFIX "_Q10", "\\BKLI",
J1X_PREFIX "_Q0B", J1X_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, &params, 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;
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 (asus_info) {
snprintf(buf, 5, "%s", asus_info->signature);
len += sprintf(page + len, "ACPI signature : %s\n", buf);
snprintf(buf, 16, "%d", asus_info->length);
len += sprintf(page + len, "Table length : %s\n", buf);
snprintf(buf, 16, "%d", asus_info->revision);
len += sprintf(page + len, "ACPI minor version : %s\n", buf);
snprintf(buf, 16, "%d", asus_info->checksum);
len += sprintf(page + len, "Checksum : %s\n", buf);
snprintf(buf, 7, "%s", asus_info->oem_id);
len += sprintf(page + len, "OEM identification : %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 rev number : 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 rev number: 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_NOTICE "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_NOTICE "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->mled_status,
&led_status))
len = sprintf(page, "%d\n", led_status);
else
printk(KERN_NOTICE "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_NOTICE "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_NOTICE "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_NOTICE "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;
/* ATKD laptop */
if(hotk->methods->brightness_set) {
if (!write_acpi_int(hotk->handle, hotk->methods->brightness_set,
value, NULL))
printk(KERN_NOTICE "Asus ACPI: Error changing brightness\n");
return;
}
/* HOTK laptop 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_NOTICE "Asus ACPI: Error changing brightness\n");
}
return;
}
static int read_brightness(struct asus_hotk *hotk)
{
int value;
if(hotk->methods->brightness_get) { /* ATKD laptop */
if (!read_acpi_int(hotk->handle, hotk->methods->brightness_get,
&value))
printk(KERN_NOTICE "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_NOTICE "Asus ACPI: Error reading brightness\n");
} else /* HOTK laptop */
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_NOTICE "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_NOTICE "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_NOTICE "Asus ACPI: Error reading display status\n");
return sprintf(page, "%d\n", value);
}
/*
* Preliminary 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_NOTICE "Asus ACPI: Error reading user input\n");
}
return count;
}
static int 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_NOTICE " 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_NOTICE " 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_NOTICE " 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_NOTICE " 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_NOTICE " 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_NOTICE " Unable to create " PROC_DISP
" fs entry\n");
}
}
return (AE_OK);
}
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 make 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 asus_hotk_get_info(struct asus_hotk *hotk)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *model = NULL;
/*
* We have to write 0 on init this far for all ASUS models
*/
if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
printk(KERN_NOTICE " Hotkey initialization failed\n");
return -ENODEV;
}
/*
* 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, "L2", 2) == 0)
hotk->model = L2X;
else if (strncmp(model->string.pointer, "L8", 2) == 0)
/* S1300A reports L84F, but L1400B too */
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, "J1", 2) == 0)
hotk->model = J1X;
if (hotk->model == END_MODEL) {
/* By default use the same values, as I don't know others */
printk("unsupported, trying default values, contact the "
"developers\n");
hotk->model = L2X;
} else {
printk("supported\n");
}
hotk->methods = &model_conf[hotk->model];
acpi_os_free(model);
return AE_OK;
}
static int 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_NOTICE " Hotkey device not present, aborting\n");
return(-EINVAL);
}
return(result);
}
static int asus_hotk_add(struct acpi_device *device)
{
struct asus_hotk *hotk = NULL;
acpi_status status = AE_OK;
int result;
if (!device)
return(-EINVAL);
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_NOTICE
" Error installing notify handler\n");
} else {
printk(KERN_DEBUG
" Notify Handler installed successfully\n");
}
/* For HOTK laptops: 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_NOTICE " Error changing brightness\n");
status = acpi_evaluate_object(NULL, hotk->methods->brightness_up,
NULL, NULL);
if (ACPI_FAILURE(status))
printk(KERN_NOTICE " 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_NOTICE "Error removing notify handler\n");
kfree(hotk);
return(0);
}
static int __init asus_acpi_init(void)
{
int result = 0;
acpi_status status = 0;
struct acpi_buffer dsdt = { ACPI_ALLOCATE_BUFFER, NULL };
printk(KERN_NOTICE "Asus Laptop ACPI Extras version %s\n",
ASUS_ACPI_VERSION);
/*
* Here is the code to know the model we are running on. We need to
* know this before calling the acpi_bus_register_driver function, in
* case the HID for the laptop we are running on is different from
* ACPI_HOTK_HID, which I have never seen yet :)
*
* This information is then available in the global var asus_info
*/
status = acpi_get_table(ACPI_TABLE_DSDT, 1, &dsdt);
if (ACPI_FAILURE(status)) {
printk(KERN_NOTICE " Couldn't get the DSDT table header\n");
} else {
asus_info = (struct acpi_table_header *) dsdt.pointer;
}
asus_proc_dir = proc_mkdir(PROC_ASUS, acpi_root_dir);
if (!asus_proc_dir)
return(-ENODEV);
asus_proc_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&asus_hotk_driver);
if (result < 0) {
printk(KERN_NOTICE " Error registering " ACPI_HOTK_NAME " \n");
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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