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linux/drivers/platform/x86/asus-laptop.c
Corentin Chary 9129d14d29 asus-laptop: callbacks should use "driver data" parameter or field 
(Changelog stolen from Alan's patch for eeepc-laptop, but this patch
does the same thing for asus-laptop)

Callback methods should not refer to a variable like "asus" (formally
"hotk").  Instead, they should extract the data they need either from
a "driver data" parameter, or the "driver data" field of the object
which they operate on.  The "asus" variable can then be removed.

In practice, drivers under "drivers/platform" can get away without using
driver data, because it doesn't make sense to have more than one
instance of them.  However this makes it harder to review them for
correctness.  This is especially true for core ACPI developers who have
not previously been exposed to this anti-pattern :-).

This will serve as an example of best practice for new driver writers
(whether they find it themselves, or have it pointed out during review
:-).

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
2010-02-28 19:35:10 +01:00

1573 lines
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/*
* 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_LAPTOP_NAME "Asus Laptop Support"
#define ASUS_LAPTOP_CLASS "hotkey"
#define ASUS_LAPTOP_DEVICE_NAME "Hotkey"
#define ASUS_LAPTOP_FILE KBUILD_MODNAME
#define ASUS_LAPTOP_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 */
MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
MODULE_DESCRIPTION(ASUS_LAPTOP_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");
static uint wireless_status = 1;
static uint bluetooth_status = 1;
module_param(wireless_status, uint, 0644);
MODULE_PARM_DESC(wireless_status, "Set the wireless status on boot "
"(0 = disabled, 1 = enabled, -1 = don't do anything). "
"default is 1");
module_param(bluetooth_status, uint, 0644);
MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
"(0 = disabled, 1 = enabled, -1 = don't do anything). "
"default is 1");
#define ASUS_HANDLE(object, paths...) \
static acpi_handle object##_handle = NULL; \
static char *object##_paths[] = { paths }
/* LED */
ASUS_HANDLE(mled_set, ASUS_LAPTOP_PREFIX "MLED");
ASUS_HANDLE(tled_set, ASUS_LAPTOP_PREFIX "TLED");
ASUS_HANDLE(rled_set, ASUS_LAPTOP_PREFIX "RLED"); /* W1JC */
ASUS_HANDLE(pled_set, ASUS_LAPTOP_PREFIX "PLED"); /* A7J */
ASUS_HANDLE(gled_set, ASUS_LAPTOP_PREFIX "GLED"); /* G1, G2 (probably) */
/* LEDD */
ASUS_HANDLE(ledd_set, ASUS_LAPTOP_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_LAPTOP_PREFIX "WLED");
ASUS_HANDLE(bt_switch, ASUS_LAPTOP_PREFIX "BLED");
ASUS_HANDLE(wireless_status, ASUS_LAPTOP_PREFIX "RSTS"); /* All new models */
/* Brightness */
ASUS_HANDLE(brightness_set, ASUS_LAPTOP_PREFIX "SPLV");
ASUS_HANDLE(brightness_get, ASUS_LAPTOP_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_LAPTOP_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_LAPTOP_PREFIX "ALSC"); /* Z71A Z71V */
ASUS_HANDLE(ls_level, ASUS_LAPTOP_PREFIX "ALSL"); /* Z71A Z71V */
/* GPS */
/* R2H use different handle for GPS on/off */
ASUS_HANDLE(gps_on, ASUS_LAPTOP_PREFIX "SDON"); /* R2H */
ASUS_HANDLE(gps_off, ASUS_LAPTOP_PREFIX "SDOF"); /* R2H */
ASUS_HANDLE(gps_status, ASUS_LAPTOP_PREFIX "GPST");
/* Keyboard light */
ASUS_HANDLE(kled_set, ASUS_LAPTOP_PREFIX "SLKB");
ASUS_HANDLE(kled_get, ASUS_LAPTOP_PREFIX "GLKB");
/*
* Define a specific led structure to keep the main structure clean
*/
#define ASUS_DEFINE_LED(object) \
int object##_wk; \
struct work_struct object##_work; \
struct led_classdev object;
#define led_to_asus(led_cdev, led) \
container_of(container_of(led_cdev, struct asus_laptop_leds, \
led), \
struct asus_laptop, leds)
#define work_to_asus(work, led) \
container_of(container_of(work, struct asus_laptop_leds, \
led##_work), \
struct asus_laptop, leds)
struct asus_laptop_leds {
ASUS_DEFINE_LED(mled)
ASUS_DEFINE_LED(tled)
ASUS_DEFINE_LED(rled)
ASUS_DEFINE_LED(pled)
ASUS_DEFINE_LED(gled)
ASUS_DEFINE_LED(kled)
struct workqueue_struct *workqueue;
};
/*
* This is the main structure, we can use it to store anything interesting
* about the hotk device
*/
struct asus_laptop {
char *name; /* laptop name */
struct acpi_table_header *dsdt_info;
struct platform_device *platform_device;
struct acpi_device *device; /* the device we are in */
struct backlight_device *backlight_device;
struct input_dev *inputdev;
struct key_entry *keymap;
struct asus_laptop_leds leds;
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 */
u16 *keycode_map;
};
/*
* 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,
};
#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 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 const 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_ret(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, &params, output);
if (status == AE_OK)
return 0;
else
return -1;
}
static int write_acpi_int(acpi_handle handle, const char *method, int val)
{
return write_acpi_int_ret(handle, method, val, NULL);
}
static int read_wireless_status(struct asus_laptop *asus, int mask)
{
unsigned long long status;
acpi_status rv = AE_OK;
if (!wireless_status_handle)
return (asus->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 (asus->status & mask) ? 1 : 0;
}
static int read_gps_status(struct asus_laptop *asus)
{
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 (asus->status & GPS_ON) ? 1 : 0;
}
/* Generic LED functions */
static int read_status(struct asus_laptop *asus, int mask)
{
/* There is a special method for both wireless devices */
if (mask == BT_ON || mask == WL_ON)
return read_wireless_status(asus, mask);
else if (mask == GPS_ON)
return read_gps_status(asus);
return (asus->status & mask) ? 1 : 0;
}
static void write_status(struct asus_laptop *asus, acpi_handle handle,
int out, int mask)
{
asus->status = (out) ? (asus->status | mask) : (asus->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))
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) \
{ \
struct asus_laptop *asus = \
led_to_asus(led_cdev, object); \
\
asus->leds.object##_wk = (value > 0) ? 1 : 0; \
queue_work(asus->leds.workqueue, \
&asus->leds.object##_work); \
} \
static void object##_led_update(struct work_struct *work) \
{ \
struct asus_laptop *asus = work_to_asus(work, object); \
\
int value = asus->leds.object##_wk; \
write_status(asus, 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, &params, &kblv);
if (ACPI_FAILURE(rv)) {
pr_warning("Error reading kled level\n");
return 0;
}
return kblv;
}
static int set_kled_lvl(struct asus_laptop *asus, int kblv)
{
if (kblv > 0)
kblv = (1 << 7) | (kblv & 0x7F);
else
kblv = 0;
if (write_acpi_int(kled_set_handle, NULL, kblv)) {
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)
{
struct asus_laptop *asus = led_to_asus(led_cdev, kled);
asus->leds.kled_wk = value;
queue_work(asus->leds.workqueue, &asus->leds.kled_work);
}
static void kled_led_update(struct work_struct *work)
{
struct asus_laptop *asus = work_to_asus(work, kled);
set_kled_lvl(asus, asus->leds.kled_wk);
}
static enum led_brightness kled_led_get(struct led_classdev *led_cdev)
{
return get_kled_lvl();
}
static int get_lcd_state(struct asus_laptop *asus)
{
return read_status(asus, LCD_ON);
}
static int set_lcd_state(struct asus_laptop *asus, int value)
{
int lcd = 0;
acpi_status status = 0;
lcd = value ? 1 : 0;
if (lcd == get_lcd_state(asus))
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(asus, NULL, lcd, LCD_ON);
return 0;
}
static void lcd_blank(struct asus_laptop *asus, 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)
{
if (write_acpi_int(brightness_set_handle, NULL, value)) {
pr_warning("Error changing brightness\n");
return -EIO;
}
return 0;
}
static int update_bl_status(struct backlight_device *bd)
{
struct asus_laptop *asus = bl_get_data(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(asus, 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)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
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_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
len += sprintf(page + len, "Model reference : %s\n", asus->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(asus->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(asus->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(asus->handle, "ASYM", NULL, &temp);
if (!ACPI_FAILURE(rv))
len += sprintf(page + len, "ASYM value : %#x\n",
(uint) temp);
if (asus->dsdt_info) {
snprintf(buf, 16, "%d", asus->dsdt_info->length);
len += sprintf(page + len, "DSDT length : %s\n", buf);
snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
len += sprintf(page + len, "DSDT checksum : %s\n", buf);
snprintf(buf, 16, "%d", asus->dsdt_info->revision);
len += sprintf(page + len, "DSDT revision : %s\n", buf);
snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
len += sprintf(page + len, "OEM id : %s\n", buf);
snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
len += sprintf(page + len, "OEM table id : %s\n", buf);
snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
snprintf(buf, 16, "%x", asus->dsdt_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(struct asus_laptop *asus,
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(asus, handle, out, mask);
return rv;
}
/*
* LEDD display
*/
static ssize_t show_ledd(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return sprintf(buf, "0x%08x\n", asus->ledd_status);
}
static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
int rv, value;
rv = parse_arg(buf, count, &value);
if (rv > 0) {
if (write_acpi_int(ledd_set_handle, NULL, value))
pr_warning("LED display write failed\n");
else
asus->ledd_status = (u32) value;
}
return rv;
}
/*
* WLAN
*/
static ssize_t show_wlan(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", read_status(asus, WL_ON));
}
static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return store_status(asus, buf, count, wl_switch_handle, WL_ON);
}
/*
* Bluetooth
*/
static ssize_t show_bluetooth(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", read_status(asus, BT_ON));
}
static ssize_t store_bluetooth(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return store_status(asus, buf, count, bt_switch_handle, BT_ON);
}
/*
* Display
*/
static void set_display(struct asus_laptop *asus, int value)
{
/* no sanity check needed for now */
if (write_acpi_int(display_set_handle, NULL, value))
pr_warning("Error setting display\n");
return;
}
static int read_display(struct asus_laptop *asus)
{
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)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", read_display(asus));
}
/*
* 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)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
int rv, value;
rv = parse_arg(buf, count, &value);
if (rv > 0)
set_display(asus, value);
return rv;
}
/*
* Light Sens
*/
static void set_light_sens_switch(struct asus_laptop *asus, int value)
{
if (write_acpi_int(ls_switch_handle, NULL, value))
pr_warning("Error setting light sensor switch\n");
asus->light_switch = value;
}
static ssize_t show_lssw(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", asus->light_switch);
}
static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
int rv, value;
rv = parse_arg(buf, count, &value);
if (rv > 0)
set_light_sens_switch(asus, value ? 1 : 0);
return rv;
}
static void set_light_sens_level(struct asus_laptop *asus, int value)
{
if (write_acpi_int(ls_level_handle, NULL, value))
pr_warning("Error setting light sensor level\n");
asus->light_level = value;
}
static ssize_t show_lslvl(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", asus->light_level);
}
static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
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(asus, value);
}
return rv;
}
/*
* GPS
*/
static ssize_t show_gps(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", read_status(asus, GPS_ON));
}
static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return store_status(asus, buf, count, NULL, GPS_ON);
}
/*
* Hotkey functions
*/
static struct key_entry *asus_get_entry_by_scancode(struct asus_laptop *asus,
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(struct asus_laptop *asus,
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 asus_laptop *asus = input_get_drvdata(dev);
struct key_entry *key = asus_get_entry_by_scancode(asus, 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 asus_laptop *asus = input_get_drvdata(dev);
struct key_entry *key;
int old_keycode;
if (keycode < 0 || keycode > KEY_MAX)
return -EINVAL;
key = asus_get_entry_by_scancode(asus, 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(asus, old_keycode))
clear_bit(old_keycode, dev->keybit);
return 0;
}
return -EINVAL;
}
static void asus_acpi_notify(struct acpi_device *device, u32 event)
{
struct asus_laptop *asus = acpi_driver_data(device);
static struct key_entry *key;
u16 count;
/*
* We need to tell the backlight device when the backlight power is
* switched
*/
if (event == ATKD_LCD_ON) {
write_status(asus, NULL, 1, LCD_ON);
lcd_blank(asus, FB_BLANK_UNBLANK);
} else if (event == ATKD_LCD_OFF) {
write_status(asus, NULL, 0, LCD_ON);
lcd_blank(asus, FB_BLANK_POWERDOWN);
}
/* TODO Find a better way to handle events count. */
count = asus->event_count[event % 128]++;
acpi_bus_generate_proc_event(asus->device, event, count);
acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
dev_name(&asus->device->dev), event,
count);
if (asus->inputdev) {
key = asus_get_entry_by_scancode(asus, event);
if (!key)
return ;
switch (key->type) {
case KE_KEY:
input_report_key(asus->inputdev, key->keycode, 1);
input_sync(asus->inputdev);
input_report_key(asus->inputdev, key->keycode, 0);
input_sync(asus->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 platform_attribute_group = {
.attrs = asuspf_attributes
};
static int asus_platform_init(struct asus_laptop *asus)
{
int result;
asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
if (!asus->platform_device)
return -ENOMEM;
platform_set_drvdata(asus->platform_device, asus);
result = platform_device_add(asus->platform_device);
if (result)
goto fail_platform_device;
result = sysfs_create_group(&asus->platform_device->dev.kobj,
&platform_attribute_group);
if (result)
goto fail_sysfs;
return 0;
fail_sysfs:
platform_device_del(asus->platform_device);
fail_platform_device:
platform_device_put(asus->platform_device);
return result;
}
static void asus_platform_exit(struct asus_laptop *asus)
{
sysfs_remove_group(&asus->platform_device->dev.kobj,
&platform_attribute_group);
platform_device_unregister(asus->platform_device);
}
static struct platform_driver platform_driver = {
.driver = {
.name = ASUS_LAPTOP_FILE,
.owner = THIS_MODULE,
}
};
static void asus_laptop_add_fs(struct asus_laptop *asus)
{
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 context with right values. In this
* method, we can make all the detection we want, and modify the asus_laptop
* struct
*/
static int asus_laptop_get_info(struct asus_laptop *asus)
{
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.
*/
status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_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_ret(asus->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(asus->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(asus->handle, "CWAP", wapf);
/*
* 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;
}
}
asus->name = kstrdup(string, GFP_KERNEL);
if (!asus->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(asus->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(struct asus_laptop *asus)
{
const struct key_entry *key;
int result;
asus->inputdev = input_allocate_device();
if (!asus->inputdev) {
pr_info("Unable to allocate input device\n");
return 0;
}
asus->inputdev->name = "Asus Laptop extra buttons";
asus->inputdev->dev.parent = &asus->platform_device->dev;
asus->inputdev->phys = ASUS_LAPTOP_FILE "/input0";
asus->inputdev->id.bustype = BUS_HOST;
asus->inputdev->getkeycode = asus_getkeycode;
asus->inputdev->setkeycode = asus_setkeycode;
input_set_drvdata(asus->inputdev, asus);
asus->keymap = kmemdup(asus_keymap, sizeof(asus_keymap),
GFP_KERNEL);
for (key = asus->keymap; key->type != KE_END; key++) {
switch (key->type) {
case KE_KEY:
set_bit(EV_KEY, asus->inputdev->evbit);
set_bit(key->keycode, asus->inputdev->keybit);
break;
}
}
result = input_register_device(asus->inputdev);
if (result) {
pr_info("Unable to register input device\n");
input_free_device(asus->inputdev);
}
return result;
}
static void asus_backlight_exit(struct asus_laptop *asus)
{
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(struct asus_laptop *asus)
{
ASUS_LED_UNREGISTER(mled);
ASUS_LED_UNREGISTER(tled);
ASUS_LED_UNREGISTER(pled);
ASUS_LED_UNREGISTER(rled);
ASUS_LED_UNREGISTER(gled);
ASUS_LED_UNREGISTER(kled);
if (asus->leds.workqueue) {
destroy_workqueue(asus->leds.workqueue);
asus->leds.workqueue = NULL;
}
}
static void asus_input_exit(struct asus_laptop *asus)
{
if (asus->inputdev)
input_unregister_device(asus->inputdev);
}
static int asus_backlight_init(struct asus_laptop *asus)
{
struct backlight_device *bd;
struct device *dev = &asus->platform_device->dev;
if (brightness_set_handle && lcd_switch_handle) {
bd = backlight_device_register(ASUS_LAPTOP_FILE, dev,
asus, &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;
}
/*
* Ugly macro, need to fix that later
*/
#define ASUS_LED_REGISTER(asus, object, _name, max) \
do { \
struct led_classdev *ldev = &asus->leds.object; \
if (!object##_set_handle) \
break ; \
\
INIT_WORK(&asus->leds.object##_work, object##_led_update); \
ldev->name = "asus::" _name; \
ldev->brightness_set = object##_led_set; \
ldev->max_brightness = max; \
rv = led_classdev_register(&asus->platform_device->dev, ldev); \
if (rv) \
goto error; \
} while (0)
static int asus_led_init(struct asus_laptop *asus)
{
int rv;
/*
* Functions that actually update the LED's 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.
*/
asus->leds.workqueue = create_singlethread_workqueue("led_workqueue");
if (!asus->leds.workqueue)
return -ENOMEM;
ASUS_LED_REGISTER(asus, mled, "mail", 1);
ASUS_LED_REGISTER(asus, tled, "touchpad", 1);
ASUS_LED_REGISTER(asus, rled, "record", 1);
ASUS_LED_REGISTER(asus, pled, "phone", 1);
ASUS_LED_REGISTER(asus, gled, "gaming", 1);
if (kled_set_handle && kled_get_handle)
ASUS_LED_REGISTER(asus, kled, "kbd_backlight", 3);
error:
if (rv)
asus_led_exit(asus);
return rv;
}
static bool asus_device_present;
static int __devinit asus_acpi_init(struct asus_laptop *asus)
{
int result = 0;
result = acpi_bus_get_status(asus->device);
if (result)
return result;
if (!asus->device->status.present) {
pr_err("Hotkey device not present, aborting\n");
return -ENODEV;
}
result = asus_laptop_get_info(asus);
if (result)
return result;
asus_laptop_add_fs(asus);
/* WLED and BLED are on by default */
write_status(asus, bt_switch_handle, 1, BT_ON);
write_status(asus, wl_switch_handle, 1, WL_ON);
/* If the h/w switch is off, we need to check the real status */
write_status(asus, NULL, read_status(asus, BT_ON), BT_ON);
write_status(asus, NULL, read_status(asus, WL_ON), WL_ON);
/* LCD Backlight is on by default */
write_status(asus, NULL, 1, LCD_ON);
/* Keyboard Backlight is on by default */
if (kled_set_handle)
set_kled_lvl(asus, 1);
/* LED display is off by default */
asus->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(asus, asus->light_switch);
if (ls_level_handle)
set_light_sens_level(asus, asus->light_level);
/* GPS is on by default */
write_status(asus, NULL, 1, GPS_ON);
return result;
}
static int __devinit asus_acpi_add(struct acpi_device *device)
{
struct asus_laptop *asus;
int result;
pr_notice("Asus Laptop Support version %s\n",
ASUS_LAPTOP_VERSION);
asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
if (!asus)
return -ENOMEM;
asus->handle = device->handle;
strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
device->driver_data = asus;
asus->device = device;
result = asus_acpi_init(asus);
if (result)
goto fail_platform;
/*
* Register the platform device first. It is used as a parent for the
* sub-devices below.
*/
result = asus_platform_init(asus);
if (result)
goto fail_platform;
if (!acpi_video_backlight_support()) {
result = asus_backlight_init(asus);
if (result)
goto fail_backlight;
} else
pr_info("Backlight controlled by ACPI video driver\n");
result = asus_input_init(asus);
if (result)
goto fail_input;
result = asus_led_init(asus);
if (result)
goto fail_led;
asus_device_present = true;
return 0;
fail_led:
asus_input_exit(asus);
fail_input:
asus_backlight_exit(asus);
fail_backlight:
asus_platform_exit(asus);
fail_platform:
kfree(asus->name);
kfree(asus);
return result;
}
static int asus_acpi_remove(struct acpi_device *device, int type)
{
struct asus_laptop *asus = acpi_driver_data(device);
asus_backlight_exit(asus);
asus_led_exit(asus);
asus_input_exit(asus);
asus_platform_exit(asus);
kfree(asus->name);
kfree(asus);
return 0;
}
static const struct acpi_device_id asus_device_ids[] = {
{"ATK0100", 0},
{"ATK0101", 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, asus_device_ids);
static struct acpi_driver asus_acpi_driver = {
.name = ASUS_LAPTOP_NAME,
.class = ASUS_LAPTOP_CLASS,
.owner = THIS_MODULE,
.ids = asus_device_ids,
.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
.ops = {
.add = asus_acpi_add,
.remove = asus_acpi_remove,
.notify = asus_acpi_notify,
},
};
static int __init asus_laptop_init(void)
{
int result;
result = platform_driver_register(&platform_driver);
if (result < 0)
return result;
result = acpi_bus_register_driver(&asus_acpi_driver);
if (result < 0)
goto fail_acpi_driver;
if (!asus_device_present) {
result = -ENODEV;
goto fail_no_device;
}
return 0;
fail_no_device:
acpi_bus_unregister_driver(&asus_acpi_driver);
fail_acpi_driver:
platform_driver_unregister(&platform_driver);
return result;
}
static void __exit asus_laptop_exit(void)
{
acpi_bus_unregister_driver(&asus_acpi_driver);
platform_driver_unregister(&platform_driver);
}
module_init(asus_laptop_init);
module_exit(asus_laptop_exit);
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