Linux-2.6.33.2/drivers/platform/x86/asus-laptop.c
/*
* asus-laptop.c - Asus Laptop Support
*
*
* Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
* Copyright (C) 2006-2007 Corentin Chary
*
* 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.
* Eric Burghard - LED display support for W1N
* Josh Green - Light Sens support
* Thomas Tuttle - His first patch for led support was very helpfull
* Sam Lin - GPS support
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/err.h>
#include <linux/proc_fs.h>
#include <linux/backlight.h>
#include <linux/fb.h>
#include <linux/leds.h>
#include <linux/platform_device.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_bus.h>
#include <asm/uaccess.h>
#include <linux/input.h>
#define ASUS_LAPTOP_VERSION "0.42"
#define ASUS_HOTK_NAME "Asus Laptop Support"
#define ASUS_HOTK_CLASS "hotkey"
#define ASUS_HOTK_DEVICE_NAME "Hotkey"
#define ASUS_HOTK_FILE KBUILD_MODNAME
#define ASUS_HOTK_PREFIX "\\_SB.ATKD."
/*
* Some events we use, same for all Asus
*/
#define ATKD_BR_UP 0x10
#define ATKD_BR_DOWN 0x20
#define ATKD_LCD_ON 0x33
#define ATKD_LCD_OFF 0x34
/*
* Known bits returned by \_SB.ATKD.HWRS
*/
#define WL_HWRS 0x80
#define BT_HWRS 0x100
/*
* Flags for hotk status
* WL_ON and BT_ON are also used for wireless_status()
*/
#define WL_ON 0x01 /* internal Wifi */
#define BT_ON 0x02 /* internal Bluetooth */
#define MLED_ON 0x04 /* mail LED */
#define TLED_ON 0x08 /* touchpad LED */
#define RLED_ON 0x10 /* Record LED */
#define PLED_ON 0x20 /* Phone LED */
#define GLED_ON 0x40 /* Gaming LED */
#define LCD_ON 0x80 /* LCD backlight */
#define GPS_ON 0x100 /* GPS */
#define KEY_ON 0x200 /* Keyboard backlight */
#define ASUS_LOG ASUS_HOTK_FILE ": "
#define ASUS_ERR KERN_ERR ASUS_LOG
#define ASUS_WARNING KERN_WARNING ASUS_LOG
#define ASUS_NOTICE KERN_NOTICE ASUS_LOG
#define ASUS_INFO KERN_INFO ASUS_LOG
#define ASUS_DEBUG KERN_DEBUG ASUS_LOG
MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
MODULE_DESCRIPTION(ASUS_HOTK_NAME);
MODULE_LICENSE("GPL");
/*
* WAPF defines the behavior of the Fn+Fx wlan key
* The significance of values is yet to be found, but
* most of the time:
* 0x0 will do nothing
* 0x1 will allow to control the device with Fn+Fx key.
* 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key
* 0x5 like 0x1 or 0x4
* So, if something doesn't work as you want, just try other values =)
*/
static uint wapf = 1;
module_param(wapf, uint, 0644);
MODULE_PARM_DESC(wapf, "WAPF value");
#define ASUS_HANDLE(object, paths...) \
static acpi_handle object##_handle = NULL; \
static char *object##_paths[] = { paths }
/* LED */
ASUS_HANDLE(mled_set, ASUS_HOTK_PREFIX "MLED");
ASUS_HANDLE(tled_set, ASUS_HOTK_PREFIX "TLED");
ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED"); /* W1JC */
ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED"); /* A7J */
ASUS_HANDLE(gled_set, ASUS_HOTK_PREFIX "GLED"); /* G1, G2 (probably) */
/* LEDD */
ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "SLCM");
/*
* Bluetooth and WLAN
* WLED and BLED are not handled like other XLED, because in some dsdt
* they also control the WLAN/Bluetooth device.
*/
ASUS_HANDLE(wl_switch, ASUS_HOTK_PREFIX "WLED");
ASUS_HANDLE(bt_switch, ASUS_HOTK_PREFIX "BLED");
ASUS_HANDLE(wireless_status, ASUS_HOTK_PREFIX "RSTS"); /* All new models */
/* Brightness */
ASUS_HANDLE(brightness_set, ASUS_HOTK_PREFIX "SPLV");
ASUS_HANDLE(brightness_get, ASUS_HOTK_PREFIX "GPLV");
/* Backlight */
ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */
"\\_SB.PCI0.ISA.EC0._Q10", /* A1x */
"\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */
"\\_SB.PCI0.PX40.EC0.Q10", /* M1A */
"\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */
"\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */
"\\_SB.PCI0.PX40.Q10", /* S1x */
"\\Q10"); /* A2x, L2D, L3D, M2E */
/* Display */
ASUS_HANDLE(display_set, ASUS_HOTK_PREFIX "SDSP");
ASUS_HANDLE(display_get,
/* A6B, A6K A6R A7D F3JM L4R M6R A3G M6A M6V VX-1 V6J V6V W3Z */
"\\_SB.PCI0.P0P1.VGA.GETD",
/* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V S5A M5A z33A W1Jc W2V G1 */
"\\_SB.PCI0.P0P2.VGA.GETD",
/* A6V A6Q */
"\\_SB.PCI0.P0P3.VGA.GETD",
/* A6T, A6M */
"\\_SB.PCI0.P0PA.VGA.GETD",
/* L3C */
"\\_SB.PCI0.PCI1.VGAC.NMAP",
/* Z96F */
"\\_SB.PCI0.VGA.GETD",
/* A2D */
"\\ACTD",
/* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */
"\\ADVG",
/* P30 */
"\\DNXT",
/* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */
"\\INFB",
/* A3F A6F A3N A3L M6N W3N W6A */
"\\SSTE");
ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */
ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */
/* GPS */
/* R2H use different handle for GPS on/off */
ASUS_HANDLE(gps_on, ASUS_HOTK_PREFIX "SDON"); /* R2H */
ASUS_HANDLE(gps_off, ASUS_HOTK_PREFIX "SDOF"); /* R2H */
ASUS_HANDLE(gps_status, ASUS_HOTK_PREFIX "GPST");
/* Keyboard light */
ASUS_HANDLE(kled_set, ASUS_HOTK_PREFIX "SLKB");
ASUS_HANDLE(kled_get, ASUS_HOTK_PREFIX "GLKB");
/*
* This is the main structure, we can use it to store anything interesting
* about the hotk device
*/
struct asus_hotk {
char *name; /* laptop name */
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 */
u8 light_level; /* light sensor level */
u8 light_switch; /* light sensor switch value */
u16 event_count[128]; /* count for each event TODO make this better */
struct input_dev *inputdev;
u16 *keycode_map;
};
/*
* 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 const struct acpi_device_id asus_device_ids[] = {
{"ATK0100", 0},
{"ATK0101", 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, asus_device_ids);
static int asus_hotk_add(struct acpi_device *device);
static int asus_hotk_remove(struct acpi_device *device, int type);
static void asus_hotk_notify(struct acpi_device *device, u32 event);
static struct acpi_driver asus_hotk_driver = {
.name = ASUS_HOTK_NAME,
.class = ASUS_HOTK_CLASS,
.owner = THIS_MODULE,
.ids = asus_device_ids,
.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
.ops = {
.add = asus_hotk_add,
.remove = asus_hotk_remove,
.notify = asus_hotk_notify,
},
};
/* The backlight device /sys/class/backlight */
static struct backlight_device *asus_backlight_device;
/*
* The backlight class declaration
*/
static int read_brightness(struct backlight_device *bd);
static int update_bl_status(struct backlight_device *bd);
static struct backlight_ops asusbl_ops = {
.get_brightness = read_brightness,
.update_status = update_bl_status,
};
/*
* These functions actually update the LED's, and are called from a
* workqueue. By doing this as separate work rather than when the LED
* subsystem asks, we avoid messing with the Asus ACPI stuff during a
* potentially bad time, such as a timer interrupt.
*/
static struct workqueue_struct *led_workqueue;
#define ASUS_LED(object, ledname, max) \
static void object##_led_set(struct led_classdev *led_cdev, \
enum led_brightness value); \
static enum led_brightness object##_led_get( \
struct led_classdev *led_cdev); \
static void object##_led_update(struct work_struct *ignored); \
static int object##_led_wk; \
static DECLARE_WORK(object##_led_work, object##_led_update); \
static struct led_classdev object##_led = { \
.name = "asus::" ledname, \
.brightness_set = object##_led_set, \
.brightness_get = object##_led_get, \
.max_brightness = max \
}
ASUS_LED(mled, "mail", 1);
ASUS_LED(tled, "touchpad", 1);
ASUS_LED(rled, "record", 1);
ASUS_LED(pled, "phone", 1);
ASUS_LED(gled, "gaming", 1);
ASUS_LED(kled, "kbd_backlight", 3);
struct key_entry {
char type;
u8 code;
u16 keycode;
};
enum { KE_KEY, KE_END };
static struct key_entry asus_keymap[] = {
{KE_KEY, 0x02, KEY_SCREENLOCK},
{KE_KEY, 0x05, KEY_WLAN},
{KE_KEY, 0x08, KEY_F13},
{KE_KEY, 0x17, KEY_ZOOM},
{KE_KEY, 0x1f, KEY_BATTERY},
{KE_KEY, 0x30, KEY_VOLUMEUP},
{KE_KEY, 0x31, KEY_VOLUMEDOWN},
{KE_KEY, 0x32, KEY_MUTE},
{KE_KEY, 0x33, KEY_SWITCHVIDEOMODE},
{KE_KEY, 0x34, KEY_SWITCHVIDEOMODE},
{KE_KEY, 0x40, KEY_PREVIOUSSONG},
{KE_KEY, 0x41, KEY_NEXTSONG},
{KE_KEY, 0x43, KEY_STOPCD},
{KE_KEY, 0x45, KEY_PLAYPAUSE},
{KE_KEY, 0x4c, KEY_MEDIA},
{KE_KEY, 0x50, KEY_EMAIL},
{KE_KEY, 0x51, KEY_WWW},
{KE_KEY, 0x55, KEY_CALC},
{KE_KEY, 0x5C, KEY_SCREENLOCK}, /* Screenlock */
{KE_KEY, 0x5D, KEY_WLAN},
{KE_KEY, 0x5E, KEY_WLAN},
{KE_KEY, 0x5F, KEY_WLAN},
{KE_KEY, 0x60, KEY_SWITCHVIDEOMODE},
{KE_KEY, 0x61, KEY_SWITCHVIDEOMODE},
{KE_KEY, 0x62, KEY_SWITCHVIDEOMODE},
{KE_KEY, 0x63, KEY_SWITCHVIDEOMODE},
{KE_KEY, 0x6B, KEY_F13}, /* Lock Touchpad */
{KE_KEY, 0x82, KEY_CAMERA},
{KE_KEY, 0x88, KEY_WLAN },
{KE_KEY, 0x8A, KEY_PROG1},
{KE_KEY, 0x95, KEY_MEDIA},
{KE_KEY, 0x99, KEY_PHONE},
{KE_KEY, 0xc4, KEY_KBDILLUMUP},
{KE_KEY, 0xc5, KEY_KBDILLUMDOWN},
{KE_END, 0},
};
/*
* 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 0 if write is successful, -1 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) */
union acpi_object in_obj; /* the only param we use */
acpi_status status;
if (!handle)
return 0;
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);
if (status == AE_OK)
return 0;
else
return -1;
}
static int read_wireless_status(int mask)
{
unsigned long long status;
acpi_status rv = AE_OK;
if (!wireless_status_handle)
return (hotk->status & mask) ? 1 : 0;
rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status);
if (ACPI_FAILURE(rv))
pr_warning("Error reading Wireless status\n");
else
return (status & mask) ? 1 : 0;
return (hotk->status & mask) ? 1 : 0;
}
static int read_gps_status(void)
{
unsigned long long status;
acpi_status rv = AE_OK;
rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status);
if (ACPI_FAILURE(rv))
pr_warning("Error reading GPS status\n");
else
return status ? 1 : 0;
return (hotk->status & GPS_ON) ? 1 : 0;
}
/* Generic LED functions */
static int read_status(int mask)
{
/* There is a special method for both wireless devices */
if (mask == BT_ON || mask == WL_ON)
return read_wireless_status(mask);
else if (mask == GPS_ON)
return read_gps_status();
return (hotk->status & mask) ? 1 : 0;
}
static void write_status(acpi_handle handle, int out, int mask)
{
hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask);
switch (mask) {
case MLED_ON:
out = !(out & 0x1);
break;
case GLED_ON:
out = (out & 0x1) + 1;
break;
case GPS_ON:
handle = (out) ? gps_on_handle : gps_off_handle;
out = 0x02;
break;
default:
out &= 0x1;
break;
}
if (write_acpi_int(handle, NULL, out, NULL))
pr_warning(" write failed %x\n", mask);
}
/* /sys/class/led handlers */
#define ASUS_LED_HANDLER(object, mask) \
static void object##_led_set(struct led_classdev *led_cdev, \
enum led_brightness value) \
{ \
object##_led_wk = (value > 0) ? 1 : 0; \
queue_work(led_workqueue, &object##_led_work); \
} \
static void object##_led_update(struct work_struct *ignored) \
{ \
int value = object##_led_wk; \
write_status(object##_set_handle, value, (mask)); \
} \
static enum led_brightness object##_led_get( \
struct led_classdev *led_cdev) \
{ \
return led_cdev->brightness; \
}
ASUS_LED_HANDLER(mled, MLED_ON);
ASUS_LED_HANDLER(pled, PLED_ON);
ASUS_LED_HANDLER(rled, RLED_ON);
ASUS_LED_HANDLER(tled, TLED_ON);
ASUS_LED_HANDLER(gled, GLED_ON);
/*
* Keyboard backlight
*/
static int get_kled_lvl(void)
{
unsigned long long kblv;
struct acpi_object_list params;
union acpi_object in_obj;
acpi_status rv;
params.count = 1;
params.pointer = &in_obj;
in_obj.type = ACPI_TYPE_INTEGER;
in_obj.integer.value = 2;
rv = acpi_evaluate_integer(kled_get_handle, NULL, ¶ms, &kblv);
if (ACPI_FAILURE(rv)) {
pr_warning("Error reading kled level\n");
return 0;
}
return kblv;
}
static int set_kled_lvl(int kblv)
{
if (kblv > 0)
kblv = (1 << 7) | (kblv & 0x7F);
else
kblv = 0;
if (write_acpi_int(kled_set_handle, NULL, kblv, NULL)) {
pr_warning("Keyboard LED display write failed\n");
return -EINVAL;
}
return 0;
}
static void kled_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
kled_led_wk = value;
queue_work(led_workqueue, &kled_led_work);
}
static void kled_led_update(struct work_struct *ignored)
{
set_kled_lvl(kled_led_wk);
}
static enum led_brightness kled_led_get(struct led_classdev *led_cdev)
{
return get_kled_lvl();
}
static int get_lcd_state(void)
{
return read_status(LCD_ON);
}
static int set_lcd_state(int value)
{
int lcd = 0;
acpi_status status = 0;
lcd = value ? 1 : 0;
if (lcd == get_lcd_state())
return 0;
if (lcd_switch_handle) {
status = acpi_evaluate_object(lcd_switch_handle,
NULL, NULL, NULL);
if (ACPI_FAILURE(status))
pr_warning("Error switching LCD\n");
}
write_status(NULL, lcd, LCD_ON);
return 0;
}
static void lcd_blank(int blank)
{
struct backlight_device *bd = asus_backlight_device;
if (bd) {
bd->props.power = blank;
backlight_update_status(bd);
}
}
static int read_brightness(struct backlight_device *bd)
{
unsigned long long value;
acpi_status rv = AE_OK;
rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value);
if (ACPI_FAILURE(rv))
pr_warning("Error reading brightness\n");
return value;
}
static int set_brightness(struct backlight_device *bd, int value)
{
int ret = 0;
value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
/* 0 <= value <= 15 */
if (write_acpi_int(brightness_set_handle, NULL, value, NULL)) {
pr_warning("Error changing brightness\n");
ret = -EIO;
}
return ret;
}
static int update_bl_status(struct backlight_device *bd)
{
int rv;
int value = bd->props.brightness;
rv = set_brightness(bd, value);
if (rv)
return rv;
value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0;
return set_lcd_state(value);
}
/*
* Platform device handlers
*/
/*
* 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 ssize_t show_infos(struct device *dev,
struct device_attribute *attr, char *page)
{
int len = 0;
unsigned long long temp;
char buf[16]; /* enough for all info */
acpi_status rv = AE_OK;
/*
* We use the easy way, we don't care of off and count, so we don't set eof
* to 1
*/
len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n");
len += sprintf(page + len, "Model reference : %s\n", hotk->name);
/*
* The SFUN method probably allows the original driver to get the list
* of features supported by a given model. For now, 0x0100 or 0x0800
* bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
* The significance of others is yet to be found.
*/
rv = acpi_evaluate_integer(hotk->handle, "SFUN", NULL, &temp);
if (!ACPI_FAILURE(rv))
len += sprintf(page + len, "SFUN value : %#x\n",
(uint) temp);
/*
* The HWRS method return informations about the hardware.
* 0x80 bit is for WLAN, 0x100 for Bluetooth.
* The significance of others is yet to be found.
* If we don't find the method, we assume the device are present.
*/
rv = acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &temp);
if (!ACPI_FAILURE(rv))
len += sprintf(page + len, "HRWS value : %#x\n",
(uint) temp);
/*
* Another value for userspace: the ASYM method returns 0x02 for
* battery low and 0x04 for battery critical, its readings tend to be
* more accurate than those provided by _BST.
* Note: since not all the laptops provide this method, errors are
* silently ignored.
*/
rv = acpi_evaluate_integer(hotk->handle, "ASYM", NULL, &temp);
if (!ACPI_FAILURE(rv))
len += sprintf(page + len, "ASYM value : %#x\n",
(uint) temp);
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;
}
static int parse_arg(const char *buf, unsigned long count, int *val)
{
if (!count)
return 0;
if (count > 31)
return -EINVAL;
if (sscanf(buf, "%i", val) != 1)
return -EINVAL;
return count;
}
static ssize_t store_status(const char *buf, size_t count,
acpi_handle handle, int mask)
{
int rv, value;
int out = 0;
rv = parse_arg(buf, count, &value);
if (rv > 0)
out = value ? 1 : 0;
write_status(handle, out, mask);
return rv;
}
/*
* LEDD display
*/
static ssize_t show_ledd(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "0x%08x\n", hotk->ledd_status);
}
static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int rv, value;
rv = parse_arg(buf, count, &value);
if (rv > 0) {
if (write_acpi_int(ledd_set_handle, NULL, value, NULL))
pr_warning("LED display write failed\n");
else
hotk->ledd_status = (u32) value;
}
return rv;
}
/*
* WLAN
*/
static ssize_t show_wlan(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", read_status(WL_ON));
}
static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
return store_status(buf, count, wl_switch_handle, WL_ON);
}
/*
* Bluetooth
*/
static ssize_t show_bluetooth(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", read_status(BT_ON));
}
static ssize_t store_bluetooth(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
return store_status(buf, count, bt_switch_handle, BT_ON);
}
/*
* Display
*/
static void set_display(int value)
{
/* no sanity check needed for now */
if (write_acpi_int(display_set_handle, NULL, value, NULL))
pr_warning("Error setting display\n");
return;
}
static int read_display(void)
{
unsigned long long value = 0;
acpi_status rv = AE_OK;
/*
* In most of the case, we know how to set the display, but sometime
* we can't read it
*/
if (display_get_handle) {
rv = acpi_evaluate_integer(display_get_handle, NULL,
NULL, &value);
if (ACPI_FAILURE(rv))
pr_warning("Error reading display status\n");
}
value &= 0x0F; /* needed for some models, shouldn't hurt others */
return value;
}
/*
* Now, *this* one could be more user-friendly, but so far, no-one has
* complained. The significance of bits is the same as in store_disp()
*/
static ssize_t show_disp(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", read_display());
}
/*
* Experimental support for display switching. As of now: 1 should activate
* the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
* Any combination (bitwise) of these will suffice. I never actually tested 4
* displays hooked up simultaneously, so be warned. See the acpi4asus README
* for more info.
*/
static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int rv, value;
rv = parse_arg(buf, count, &value);
if (rv > 0)
set_display(value);
return rv;
}
/*
* Light Sens
*/
static void set_light_sens_switch(int value)
{
if (write_acpi_int(ls_switch_handle, NULL, value, NULL))
pr_warning("Error setting light sensor switch\n");
hotk->light_switch = value;
}
static ssize_t show_lssw(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", hotk->light_switch);
}
static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int rv, value;
rv = parse_arg(buf, count, &value);
if (rv > 0)
set_light_sens_switch(value ? 1 : 0);
return rv;
}
static void set_light_sens_level(int value)
{
if (write_acpi_int(ls_level_handle, NULL, value, NULL))
pr_warning("Error setting light sensor level\n");
hotk->light_level = value;
}
static ssize_t show_lslvl(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", hotk->light_level);
}
static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int rv, value;
rv = parse_arg(buf, count, &value);
if (rv > 0) {
value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
/* 0 <= value <= 15 */
set_light_sens_level(value);
}
return rv;
}
/*
* GPS
*/
static ssize_t show_gps(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", read_status(GPS_ON));
}
static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
return store_status(buf, count, NULL, GPS_ON);
}
/*
* Hotkey functions
*/
static struct key_entry *asus_get_entry_by_scancode(int code)
{
struct key_entry *key;
for (key = asus_keymap; key->type != KE_END; key++)
if (code == key->code)
return key;
return NULL;
}
static struct key_entry *asus_get_entry_by_keycode(int code)
{
struct key_entry *key;
for (key = asus_keymap; key->type != KE_END; key++)
if (code == key->keycode && key->type == KE_KEY)
return key;
return NULL;
}
static int asus_getkeycode(struct input_dev *dev, int scancode, int *keycode)
{
struct key_entry *key = asus_get_entry_by_scancode(scancode);
if (key && key->type == KE_KEY) {
*keycode = key->keycode;
return 0;
}
return -EINVAL;
}
static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode)
{
struct key_entry *key;
int old_keycode;
if (keycode < 0 || keycode > KEY_MAX)
return -EINVAL;
key = asus_get_entry_by_scancode(scancode);
if (key && key->type == KE_KEY) {
old_keycode = key->keycode;
key->keycode = keycode;
set_bit(keycode, dev->keybit);
if (!asus_get_entry_by_keycode(old_keycode))
clear_bit(old_keycode, dev->keybit);
return 0;
}
return -EINVAL;
}
static void asus_hotk_notify(struct acpi_device *device, u32 event)
{
static struct key_entry *key;
u16 count;
/* TODO Find a better way to handle events count. */
if (!hotk)
return;
/*
* We need to tell the backlight device when the backlight power is
* switched
*/
if (event == ATKD_LCD_ON) {
write_status(NULL, 1, LCD_ON);
lcd_blank(FB_BLANK_UNBLANK);
} else if (event == ATKD_LCD_OFF) {
write_status(NULL, 0, LCD_ON);
lcd_blank(FB_BLANK_POWERDOWN);
}
count = hotk->event_count[event % 128]++;
acpi_bus_generate_proc_event(hotk->device, event, count);
acpi_bus_generate_netlink_event(hotk->device->pnp.device_class,
dev_name(&hotk->device->dev), event,
count);
if (hotk->inputdev) {
key = asus_get_entry_by_scancode(event);
if (!key)
return ;
switch (key->type) {
case KE_KEY:
input_report_key(hotk->inputdev, key->keycode, 1);
input_sync(hotk->inputdev);
input_report_key(hotk->inputdev, key->keycode, 0);
input_sync(hotk->inputdev);
break;
}
}
}
#define ASUS_CREATE_DEVICE_ATTR(_name) \
struct device_attribute dev_attr_##_name = { \
.attr = { \
.name = __stringify(_name), \
.mode = 0 }, \
.show = NULL, \
.store = NULL, \
}
#define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \
do { \
dev_attr_##_name.attr.mode = _mode; \
dev_attr_##_name.show = _show; \
dev_attr_##_name.store = _store; \
} while(0)
static ASUS_CREATE_DEVICE_ATTR(infos);
static ASUS_CREATE_DEVICE_ATTR(wlan);
static ASUS_CREATE_DEVICE_ATTR(bluetooth);
static ASUS_CREATE_DEVICE_ATTR(display);
static ASUS_CREATE_DEVICE_ATTR(ledd);
static ASUS_CREATE_DEVICE_ATTR(ls_switch);
static ASUS_CREATE_DEVICE_ATTR(ls_level);
static ASUS_CREATE_DEVICE_ATTR(gps);
static struct attribute *asuspf_attributes[] = {
&dev_attr_infos.attr,
&dev_attr_wlan.attr,
&dev_attr_bluetooth.attr,
&dev_attr_display.attr,
&dev_attr_ledd.attr,
&dev_attr_ls_switch.attr,
&dev_attr_ls_level.attr,
&dev_attr_gps.attr,
NULL
};
static struct attribute_group asuspf_attribute_group = {
.attrs = asuspf_attributes
};
static struct platform_driver asuspf_driver = {
.driver = {
.name = ASUS_HOTK_FILE,
.owner = THIS_MODULE,
}
};
static struct platform_device *asuspf_device;
static void asus_hotk_add_fs(void)
{
ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL);
if (wl_switch_handle)
ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan);
if (bt_switch_handle)
ASUS_SET_DEVICE_ATTR(bluetooth, 0644,
show_bluetooth, store_bluetooth);
if (display_set_handle && display_get_handle)
ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp);
else if (display_set_handle)
ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp);
if (ledd_set_handle)
ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);
if (ls_switch_handle && ls_level_handle) {
ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);
ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);
}
if (gps_status_handle && gps_on_handle && gps_off_handle)
ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps);
}
static int asus_handle_init(char *name, acpi_handle * handle,
char **paths, int num_paths)
{
int i;
acpi_status status;
for (i = 0; i < num_paths; i++) {
status = acpi_get_handle(NULL, paths[i], handle);
if (ACPI_SUCCESS(status))
return 0;
}
*handle = NULL;
return -ENODEV;
}
#define ASUS_HANDLE_INIT(object) \
asus_handle_init(#object, &object##_handle, object##_paths, \
ARRAY_SIZE(object##_paths))
/*
* 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(void)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *model = NULL;
unsigned long long bsts_result, hwrs_result;
char *string = NULL;
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_SIG_DSDT, 1, &asus_info);
if (ACPI_FAILURE(status))
pr_warning("Couldn't get the DSDT table header\n");
/* We have to write 0 on init this far for all ASUS models */
if (write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
pr_err("Hotkey initialization failed\n");
return -ENODEV;
}
/* This needs to be called for some laptops to init properly */
status =
acpi_evaluate_integer(hotk->handle, "BSTS", NULL, &bsts_result);
if (ACPI_FAILURE(status))
pr_warning("Error calling BSTS\n");
else if (bsts_result)
pr_notice("BSTS called, 0x%02x returned\n",
(uint) bsts_result);
/* This too ... */
write_acpi_int(hotk->handle, "CWAP", wapf, NULL);
/*
* Try to match the object returned by INIT to the specific model.
* Handle every possible object (or the lack of thereof) the DSDT
* writers might throw at us. When in trouble, we pass NULL to
* asus_model_match() and try something completely different.
*/
if (buffer.pointer) {
model = buffer.pointer;
switch (model->type) {
case ACPI_TYPE_STRING:
string = model->string.pointer;
break;
case ACPI_TYPE_BUFFER:
string = model->buffer.pointer;
break;
default:
string = "";
break;
}
}
hotk->name = kstrdup(string, GFP_KERNEL);
if (!hotk->name)
return -ENOMEM;
if (*string)
pr_notice(" %s model detected\n", string);
ASUS_HANDLE_INIT(mled_set);
ASUS_HANDLE_INIT(tled_set);
ASUS_HANDLE_INIT(rled_set);
ASUS_HANDLE_INIT(pled_set);
ASUS_HANDLE_INIT(gled_set);
ASUS_HANDLE_INIT(ledd_set);
ASUS_HANDLE_INIT(kled_set);
ASUS_HANDLE_INIT(kled_get);
/*
* The HWRS method return informations about the hardware.
* 0x80 bit is for WLAN, 0x100 for Bluetooth.
* The significance of others is yet to be found.
* If we don't find the method, we assume the device are present.
*/
status =
acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &hwrs_result);
if (ACPI_FAILURE(status))
hwrs_result = WL_HWRS | BT_HWRS;
if (hwrs_result & WL_HWRS)
ASUS_HANDLE_INIT(wl_switch);
if (hwrs_result & BT_HWRS)
ASUS_HANDLE_INIT(bt_switch);
ASUS_HANDLE_INIT(wireless_status);
ASUS_HANDLE_INIT(brightness_set);
ASUS_HANDLE_INIT(brightness_get);
ASUS_HANDLE_INIT(lcd_switch);
ASUS_HANDLE_INIT(display_set);
ASUS_HANDLE_INIT(display_get);
/*
* There is a lot of models with "ALSL", but a few get
* a real light sens, so we need to check it.
*/
if (!ASUS_HANDLE_INIT(ls_switch))
ASUS_HANDLE_INIT(ls_level);
ASUS_HANDLE_INIT(gps_on);
ASUS_HANDLE_INIT(gps_off);
ASUS_HANDLE_INIT(gps_status);
kfree(model);
return AE_OK;
}
static int asus_input_init(void)
{
const struct key_entry *key;
int result;
hotk->inputdev = input_allocate_device();
if (!hotk->inputdev) {
pr_info("Unable to allocate input device\n");
return 0;
}
hotk->inputdev->name = "Asus Laptop extra buttons";
hotk->inputdev->phys = ASUS_HOTK_FILE "/input0";
hotk->inputdev->id.bustype = BUS_HOST;
hotk->inputdev->getkeycode = asus_getkeycode;
hotk->inputdev->setkeycode = asus_setkeycode;
for (key = asus_keymap; key->type != KE_END; key++) {
switch (key->type) {
case KE_KEY:
set_bit(EV_KEY, hotk->inputdev->evbit);
set_bit(key->keycode, hotk->inputdev->keybit);
break;
}
}
result = input_register_device(hotk->inputdev);
if (result) {
pr_info("Unable to register input device\n");
input_free_device(hotk->inputdev);
}
return result;
}
static int asus_hotk_check(void)
{
int result = 0;
result = acpi_bus_get_status(hotk->device);
if (result)
return result;
if (hotk->device->status.present) {
result = asus_hotk_get_info();
} else {
pr_err("Hotkey device not present, aborting\n");
return -EINVAL;
}
return result;
}
static int asus_hotk_found;
static int asus_hotk_add(struct acpi_device *device)
{
int result;
pr_notice("Asus Laptop Support version %s\n",
ASUS_LAPTOP_VERSION);
hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL);
if (!hotk)
return -ENOMEM;
hotk->handle = device->handle;
strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME);
strcpy(acpi_device_class(device), ASUS_HOTK_CLASS);
device->driver_data = hotk;
hotk->device = device;
result = asus_hotk_check();
if (result)
goto end;
asus_hotk_add_fs();
asus_hotk_found = 1;
/* WLED and BLED are on by default */
write_status(bt_switch_handle, 1, BT_ON);
write_status(wl_switch_handle, 1, WL_ON);
/* If the h/w switch is off, we need to check the real status */
write_status(NULL, read_status(BT_ON), BT_ON);
write_status(NULL, read_status(WL_ON), WL_ON);
/* LCD Backlight is on by default */
write_status(NULL, 1, LCD_ON);
/* Keyboard Backlight is on by default */
if (kled_set_handle)
set_kled_lvl(1);
/* LED display is off by default */
hotk->ledd_status = 0xFFF;
/* Set initial values of light sensor and level */
hotk->light_switch = 0; /* Default to light sensor disabled */
hotk->light_level = 5; /* level 5 for sensor sensitivity */
if (ls_switch_handle)
set_light_sens_switch(hotk->light_switch);
if (ls_level_handle)
set_light_sens_level(hotk->light_level);
/* GPS is on by default */
write_status(NULL, 1, GPS_ON);
end:
if (result) {
kfree(hotk->name);
kfree(hotk);
}
return result;
}
static int asus_hotk_remove(struct acpi_device *device, int type)
{
kfree(hotk->name);
kfree(hotk);
return 0;
}
static void asus_backlight_exit(void)
{
if (asus_backlight_device)
backlight_device_unregister(asus_backlight_device);
}
#define ASUS_LED_UNREGISTER(object) \
if (object##_led.dev) \
led_classdev_unregister(&object##_led)
static void asus_led_exit(void)
{
destroy_workqueue(led_workqueue);
ASUS_LED_UNREGISTER(mled);
ASUS_LED_UNREGISTER(tled);
ASUS_LED_UNREGISTER(pled);
ASUS_LED_UNREGISTER(rled);
ASUS_LED_UNREGISTER(gled);
ASUS_LED_UNREGISTER(kled);
}
static void asus_input_exit(void)
{
if (hotk->inputdev)
input_unregister_device(hotk->inputdev);
}
static void __exit asus_laptop_exit(void)
{
asus_backlight_exit();
asus_led_exit();
asus_input_exit();
acpi_bus_unregister_driver(&asus_hotk_driver);
sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group);
platform_device_unregister(asuspf_device);
platform_driver_unregister(&asuspf_driver);
}
static int asus_backlight_init(struct device *dev)
{
struct backlight_device *bd;
if (brightness_set_handle && lcd_switch_handle) {
bd = backlight_device_register(ASUS_HOTK_FILE, dev,
NULL, &asusbl_ops);
if (IS_ERR(bd)) {
pr_err("Could not register asus backlight device\n");
asus_backlight_device = NULL;
return PTR_ERR(bd);
}
asus_backlight_device = bd;
bd->props.max_brightness = 15;
bd->props.brightness = read_brightness(NULL);
bd->props.power = FB_BLANK_UNBLANK;
backlight_update_status(bd);
}
return 0;
}
static int asus_led_register(acpi_handle handle,
struct led_classdev *ldev, struct device *dev)
{
if (!handle)
return 0;
return led_classdev_register(dev, ldev);
}
#define ASUS_LED_REGISTER(object, device) \
asus_led_register(object##_set_handle, &object##_led, device)
static int asus_led_init(struct device *dev)
{
int rv;
rv = ASUS_LED_REGISTER(mled, dev);
if (rv)
goto out;
rv = ASUS_LED_REGISTER(tled, dev);
if (rv)
goto out1;
rv = ASUS_LED_REGISTER(rled, dev);
if (rv)
goto out2;
rv = ASUS_LED_REGISTER(pled, dev);
if (rv)
goto out3;
rv = ASUS_LED_REGISTER(gled, dev);
if (rv)
goto out4;
if (kled_set_handle && kled_get_handle)
rv = ASUS_LED_REGISTER(kled, dev);
if (rv)
goto out5;
led_workqueue = create_singlethread_workqueue("led_workqueue");
if (!led_workqueue)
goto out6;
return 0;
out6:
rv = -ENOMEM;
ASUS_LED_UNREGISTER(kled);
out5:
ASUS_LED_UNREGISTER(gled);
out4:
ASUS_LED_UNREGISTER(pled);
out3:
ASUS_LED_UNREGISTER(rled);
out2:
ASUS_LED_UNREGISTER(tled);
out1:
ASUS_LED_UNREGISTER(mled);
out:
return rv;
}
static int __init asus_laptop_init(void)
{
int result;
result = acpi_bus_register_driver(&asus_hotk_driver);
if (result < 0)
return result;
/*
* This is a bit of a kludge. We only want this module loaded
* for ASUS systems, but there's currently no way to probe the
* ACPI namespace for ASUS HIDs. So we just return failure if
* we didn't find one, which will cause the module to be
* unloaded.
*/
if (!asus_hotk_found) {
acpi_bus_unregister_driver(&asus_hotk_driver);
return -ENODEV;
}
result = asus_input_init();
if (result)
goto fail_input;
/* Register platform stuff */
result = platform_driver_register(&asuspf_driver);
if (result)
goto fail_platform_driver;
asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1);
if (!asuspf_device) {
result = -ENOMEM;
goto fail_platform_device1;
}
result = platform_device_add(asuspf_device);
if (result)
goto fail_platform_device2;
result = sysfs_create_group(&asuspf_device->dev.kobj,
&asuspf_attribute_group);
if (result)
goto fail_sysfs;
result = asus_led_init(&asuspf_device->dev);
if (result)
goto fail_led;
if (!acpi_video_backlight_support()) {
result = asus_backlight_init(&asuspf_device->dev);
if (result)
goto fail_backlight;
} else
pr_info("Brightness ignored, must be controlled by "
"ACPI video driver\n");
return 0;
fail_backlight:
asus_led_exit();
fail_led:
sysfs_remove_group(&asuspf_device->dev.kobj,
&asuspf_attribute_group);
fail_sysfs:
platform_device_del(asuspf_device);
fail_platform_device2:
platform_device_put(asuspf_device);
fail_platform_device1:
platform_driver_unregister(&asuspf_driver);
fail_platform_driver:
asus_input_exit();
fail_input:
return result;
}
module_init(asus_laptop_init);
module_exit(asus_laptop_exit);