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linux/drivers/platform/x86/asus-laptop.c
Corentin Chary 3b81cf9d55 asus-laptop: remove deprecated interfaces (lcd_switch and display_get) 
I should have done that one year ago, so it's more than
time to do it.

These two features use non-standard interfaces. There are the
only features that really need multiple path to guess what's
the right method name on a specific laptop.

Removing them allow to remove a lot of code an significantly
clean the driver.

This will affect the backlight code which won't be able to know
if the backlight is on or off.

The platform display file will also be write only (like the one
in eeepc-laptop).

Signed-off-by: Corentin Chary <corentin.chary@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-03-28 06:05:20 -04:00

1554 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 <linux/uaccess.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <linux/rfkill.h>
#include <linux/slab.h>
#include <linux/dmi.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_bus.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."
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, 0444);
MODULE_PARM_DESC(wapf, "WAPF value");
static int wlan_status = 1;
static int bluetooth_status = 1;
static int wimax_status = -1;
static int wwan_status = -1;
module_param(wlan_status, int, 0444);
MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot "
"(0 = disabled, 1 = enabled, -1 = don't do anything). "
"default is 1");
module_param(bluetooth_status, int, 0444);
MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
"(0 = disabled, 1 = enabled, -1 = don't do anything). "
"default is 1");
module_param(wimax_status, int, 0444);
MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot "
"(0 = disabled, 1 = enabled, -1 = don't do anything). "
"default is 1");
module_param(wwan_status, int, 0444);
MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot "
"(0 = disabled, 1 = enabled, -1 = don't do anything). "
"default is 1");
/*
* Some events we use, same for all Asus
*/
#define ATKD_BR_UP 0x10 /* (event & ~ATKD_BR_UP) = brightness level */
#define ATKD_BR_DOWN 0x20 /* (event & ~ATKD_BR_DOWN) = britghness level */
#define ATKD_BR_MIN ATKD_BR_UP
#define ATKD_BR_MAX (ATKD_BR_DOWN | 0xF) /* 0x2f */
#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_RSTS 0x01 /* internal Wifi */
#define BT_RSTS 0x02 /* internal Bluetooth */
#define WM_RSTS 0x08 /* internal wimax */
#define WW_RSTS 0x20 /* internal wwan */
/* LED */
#define METHOD_MLED "MLED"
#define METHOD_TLED "TLED"
#define METHOD_RLED "RLED" /* W1JC */
#define METHOD_PLED "PLED" /* A7J */
#define METHOD_GLED "GLED" /* G1, G2 (probably) */
/* LEDD */
#define METHOD_LEDD "SLCM"
/*
* Bluetooth and WLAN
* WLED and BLED are not handled like other XLED, because in some dsdt
* they also control the WLAN/Bluetooth device.
*/
#define METHOD_WLAN "WLED"
#define METHOD_BLUETOOTH "BLED"
/* WWAN and WIMAX */
#define METHOD_WWAN "GSMC"
#define METHOD_WIMAX "WMXC"
#define METHOD_WL_STATUS "RSTS"
/* Brightness */
#define METHOD_BRIGHTNESS_SET "SPLV"
#define METHOD_BRIGHTNESS_GET "GPLV"
/* Display */
#define METHOD_SWITCH_DISPLAY "SDSP"
#define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */
#define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */
/* GPS */
/* R2H use different handle for GPS on/off */
#define METHOD_GPS_ON "SDON"
#define METHOD_GPS_OFF "SDOF"
#define METHOD_GPS_STATUS "GPST"
/* Keyboard light */
#define METHOD_KBD_LIGHT_SET "SLKB"
#define METHOD_KBD_LIGHT_GET "GLKB"
/*
* Define a specific led structure to keep the main structure clean
*/
struct asus_led {
int wk;
struct work_struct work;
struct led_classdev led;
struct asus_laptop *asus;
const char *method;
};
/*
* 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_led mled;
struct asus_led tled;
struct asus_led rled;
struct asus_led pled;
struct asus_led gled;
struct asus_led kled;
struct workqueue_struct *led_workqueue;
int wireless_status;
bool have_rsts;
struct rfkill *gps_rfkill;
acpi_handle handle; /* the handle of the hotk device */
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 */
};
static const struct key_entry asus_keymap[] = {
/* Lenovo SL Specific keycodes */
{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 } },
/* End of Lenovo SL Specific keycodes */
{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, 0x7E, { KEY_BLUETOOTH } },
{KE_KEY, 0x7D, { KEY_BLUETOOTH } },
{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_KEY, 0xb5, { KEY_CALC } },
{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 -1;
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 acpi_check_handle(acpi_handle handle, const char *method,
acpi_handle *ret)
{
acpi_status status;
if (method == NULL)
return -ENODEV;
if (ret)
status = acpi_get_handle(handle, (char *)method,
ret);
else {
acpi_handle dummy;
status = acpi_get_handle(handle, (char *)method,
&dummy);
}
if (status != AE_OK) {
if (ret)
pr_warning("Error finding %s\n", method);
return -ENODEV;
}
return 0;
}
/* Generic LED function */
static int asus_led_set(struct asus_laptop *asus, const char *method,
int value)
{
if (!strcmp(method, METHOD_MLED))
value = !value;
else if (!strcmp(method, METHOD_GLED))
value = !value + 1;
else
value = !!value;
return write_acpi_int(asus->handle, method, value);
}
/*
* LEDs
*/
/* /sys/class/led handlers */
static void asus_led_cdev_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
struct asus_led *led = container_of(led_cdev, struct asus_led, led);
struct asus_laptop *asus = led->asus;
led->wk = !!value;
queue_work(asus->led_workqueue, &led->work);
}
static void asus_led_cdev_update(struct work_struct *work)
{
struct asus_led *led = container_of(work, struct asus_led, work);
struct asus_laptop *asus = led->asus;
asus_led_set(asus, led->method, led->wk);
}
static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev)
{
return led_cdev->brightness;
}
/*
* Keyboard backlight (also a LED)
*/
static int asus_kled_lvl(struct asus_laptop *asus)
{
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(asus->handle, METHOD_KBD_LIGHT_GET,
&params, &kblv);
if (ACPI_FAILURE(rv)) {
pr_warning("Error reading kled level\n");
return -ENODEV;
}
return kblv;
}
static int asus_kled_set(struct asus_laptop *asus, int kblv)
{
if (kblv > 0)
kblv = (1 << 7) | (kblv & 0x7F);
else
kblv = 0;
if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) {
pr_warning("Keyboard LED display write failed\n");
return -EINVAL;
}
return 0;
}
static void asus_kled_cdev_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
struct asus_led *led = container_of(led_cdev, struct asus_led, led);
struct asus_laptop *asus = led->asus;
led->wk = value;
queue_work(asus->led_workqueue, &led->work);
}
static void asus_kled_cdev_update(struct work_struct *work)
{
struct asus_led *led = container_of(work, struct asus_led, work);
struct asus_laptop *asus = led->asus;
asus_kled_set(asus, led->wk);
}
static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev)
{
struct asus_led *led = container_of(led_cdev, struct asus_led, led);
struct asus_laptop *asus = led->asus;
return asus_kled_lvl(asus);
}
static void asus_led_exit(struct asus_laptop *asus)
{
if (asus->mled.led.dev)
led_classdev_unregister(&asus->mled.led);
if (asus->tled.led.dev)
led_classdev_unregister(&asus->tled.led);
if (asus->pled.led.dev)
led_classdev_unregister(&asus->pled.led);
if (asus->rled.led.dev)
led_classdev_unregister(&asus->rled.led);
if (asus->gled.led.dev)
led_classdev_unregister(&asus->gled.led);
if (asus->kled.led.dev)
led_classdev_unregister(&asus->kled.led);
if (asus->led_workqueue) {
destroy_workqueue(asus->led_workqueue);
asus->led_workqueue = NULL;
}
}
/* Ugly macro, need to fix that later */
static int asus_led_register(struct asus_laptop *asus,
struct asus_led *led,
const char *name, const char *method)
{
struct led_classdev *led_cdev = &led->led;
if (!method || acpi_check_handle(asus->handle, method, NULL))
return 0; /* Led not present */
led->asus = asus;
led->method = method;
INIT_WORK(&led->work, asus_led_cdev_update);
led_cdev->name = name;
led_cdev->brightness_set = asus_led_cdev_set;
led_cdev->brightness_get = asus_led_cdev_get;
led_cdev->max_brightness = 1;
return led_classdev_register(&asus->platform_device->dev, led_cdev);
}
static int asus_led_init(struct asus_laptop *asus)
{
int r;
/*
* 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->led_workqueue = create_singlethread_workqueue("led_workqueue");
if (!asus->led_workqueue)
return -ENOMEM;
r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED);
if (r)
goto error;
r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED);
if (r)
goto error;
r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED);
if (r)
goto error;
r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED);
if (r)
goto error;
r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED);
if (r)
goto error;
if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) &&
!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) {
struct asus_led *led = &asus->kled;
struct led_classdev *cdev = &led->led;
led->asus = asus;
INIT_WORK(&led->work, asus_kled_cdev_update);
cdev->name = "asus::kbd_backlight";
cdev->brightness_set = asus_kled_cdev_set;
cdev->brightness_get = asus_kled_cdev_get;
cdev->max_brightness = 3;
r = led_classdev_register(&asus->platform_device->dev, cdev);
}
error:
if (r)
asus_led_exit(asus);
return r;
}
/*
* Backlight device
*/
static int asus_read_brightness(struct backlight_device *bd)
{
struct asus_laptop *asus = bl_get_data(bd);
unsigned long long value;
acpi_status rv = AE_OK;
rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET,
NULL, &value);
if (ACPI_FAILURE(rv))
pr_warning("Error reading brightness\n");
return value;
}
static int asus_set_brightness(struct backlight_device *bd, int value)
{
struct asus_laptop *asus = bl_get_data(bd);
if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) {
pr_warning("Error changing brightness\n");
return -EIO;
}
return 0;
}
static int update_bl_status(struct backlight_device *bd)
{
int value = bd->props.brightness;
return asus_set_brightness(bd, value);
}
static const struct backlight_ops asusbl_ops = {
.get_brightness = asus_read_brightness,
.update_status = update_bl_status,
};
static int asus_backlight_notify(struct asus_laptop *asus)
{
struct backlight_device *bd = asus->backlight_device;
int old = bd->props.brightness;
backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
return old;
}
static int asus_backlight_init(struct asus_laptop *asus)
{
struct backlight_device *bd;
struct backlight_properties props;
if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) ||
acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL))
return 0;
memset(&props, 0, sizeof(struct backlight_properties));
props.max_brightness = 15;
props.type = BACKLIGHT_PLATFORM;
bd = backlight_device_register(ASUS_LAPTOP_FILE,
&asus->platform_device->dev, asus,
&asusbl_ops, &props);
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.brightness = asus_read_brightness(bd);
bd->props.power = FB_BLANK_UNBLANK;
backlight_update_status(bd);
return 0;
}
static void asus_backlight_exit(struct asus_laptop *asus)
{
if (asus->backlight_device)
backlight_device_unregister(asus->backlight_device);
asus->backlight_device = NULL;
}
/*
* 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 sysfs_acpi_set(struct asus_laptop *asus,
const char *buf, size_t count,
const char *method)
{
int rv, value;
int out = 0;
rv = parse_arg(buf, count, &value);
if (rv > 0)
out = value ? 1 : 0;
if (write_acpi_int(asus->handle, method, value))
return -ENODEV;
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(asus->handle, METHOD_LEDD, value)) {
pr_warning("LED display write failed\n");
return -ENODEV;
}
asus->ledd_status = (u32) value;
}
return rv;
}
/*
* Wireless
*/
static int asus_wireless_status(struct asus_laptop *asus, int mask)
{
unsigned long long status;
acpi_status rv = AE_OK;
if (!asus->have_rsts)
return (asus->wireless_status & mask) ? 1 : 0;
rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
NULL, &status);
if (ACPI_FAILURE(rv)) {
pr_warning("Error reading Wireless status\n");
return -EINVAL;
}
return !!(status & mask);
}
/*
* WLAN
*/
static int asus_wlan_set(struct asus_laptop *asus, int status)
{
if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
pr_warning("Error setting wlan status to %d", status);
return -EIO;
}
return 0;
}
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", asus_wireless_status(asus, WL_RSTS));
}
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 sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
}
/*
* Bluetooth
*/
static int asus_bluetooth_set(struct asus_laptop *asus, int status)
{
if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
pr_warning("Error setting bluetooth status to %d", status);
return -EIO;
}
return 0;
}
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", asus_wireless_status(asus, BT_RSTS));
}
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 sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
}
/*
* Wimax
*/
static int asus_wimax_set(struct asus_laptop *asus, int status)
{
if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) {
pr_warning("Error setting wimax status to %d", status);
return -EIO;
}
return 0;
}
static ssize_t show_wimax(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
}
static ssize_t store_wimax(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX);
}
/*
* Wwan
*/
static int asus_wwan_set(struct asus_laptop *asus, int status)
{
if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) {
pr_warning("Error setting wwan status to %d", status);
return -EIO;
}
return 0;
}
static ssize_t show_wwan(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
}
static ssize_t store_wwan(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct asus_laptop *asus = dev_get_drvdata(dev);
return sysfs_acpi_set(asus, buf, count, METHOD_WWAN);
}
/*
* Display
*/
static void asus_set_display(struct asus_laptop *asus, int value)
{
/* no sanity check needed for now */
if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
pr_warning("Error setting display\n");
return;
}
/*
* 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)
asus_set_display(asus, value);
return rv;
}
/*
* Light Sens
*/
static void asus_als_switch(struct asus_laptop *asus, int value)
{
if (write_acpi_int(asus->handle, METHOD_ALS_CONTROL, 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)
asus_als_switch(asus, value ? 1 : 0);
return rv;
}
static void asus_als_level(struct asus_laptop *asus, int value)
{
if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, 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 */
asus_als_level(asus, value);
}
return rv;
}
/*
* GPS
*/
static int asus_gps_status(struct asus_laptop *asus)
{
unsigned long long status;
acpi_status rv = AE_OK;
rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
NULL, &status);
if (ACPI_FAILURE(rv)) {
pr_warning("Error reading GPS status\n");
return -ENODEV;
}
return !!status;
}
static int asus_gps_switch(struct asus_laptop *asus, int status)
{
const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
if (write_acpi_int(asus->handle, meth, 0x02))
return -ENODEV;
return 0;
}
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", asus_gps_status(asus));
}
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);
int rv, value;
int ret;
rv = parse_arg(buf, count, &value);
if (rv <= 0)
return -EINVAL;
ret = asus_gps_switch(asus, !!value);
if (ret)
return ret;
rfkill_set_sw_state(asus->gps_rfkill, !value);
return rv;
}
/*
* rfkill
*/
static int asus_gps_rfkill_set(void *data, bool blocked)
{
struct asus_laptop *asus = data;
return asus_gps_switch(asus, !blocked);
}
static const struct rfkill_ops asus_gps_rfkill_ops = {
.set_block = asus_gps_rfkill_set,
};
static void asus_rfkill_exit(struct asus_laptop *asus)
{
if (asus->gps_rfkill) {
rfkill_unregister(asus->gps_rfkill);
rfkill_destroy(asus->gps_rfkill);
asus->gps_rfkill = NULL;
}
}
static int asus_rfkill_init(struct asus_laptop *asus)
{
int result;
if (acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) ||
acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) ||
acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
return 0;
asus->gps_rfkill = rfkill_alloc("asus-gps", &asus->platform_device->dev,
RFKILL_TYPE_GPS,
&asus_gps_rfkill_ops, asus);
if (!asus->gps_rfkill)
return -EINVAL;
result = rfkill_register(asus->gps_rfkill);
if (result) {
rfkill_destroy(asus->gps_rfkill);
asus->gps_rfkill = NULL;
}
return result;
}
/*
* Input device (i.e. hotkeys)
*/
static void asus_input_notify(struct asus_laptop *asus, int event)
{
if (asus->inputdev)
sparse_keymap_report_event(asus->inputdev, event, 1, true);
}
static int asus_input_init(struct asus_laptop *asus)
{
struct input_dev *input;
int error;
input = input_allocate_device();
if (!input) {
pr_info("Unable to allocate input device\n");
return -ENOMEM;
}
input->name = "Asus Laptop extra buttons";
input->phys = ASUS_LAPTOP_FILE "/input0";
input->id.bustype = BUS_HOST;
input->dev.parent = &asus->platform_device->dev;
error = sparse_keymap_setup(input, asus_keymap, NULL);
if (error) {
pr_err("Unable to setup input device keymap\n");
goto err_free_dev;
}
error = input_register_device(input);
if (error) {
pr_info("Unable to register input device\n");
goto err_free_keymap;
}
asus->inputdev = input;
return 0;
err_free_keymap:
sparse_keymap_free(input);
err_free_dev:
input_free_device(input);
return error;
}
static void asus_input_exit(struct asus_laptop *asus)
{
if (asus->inputdev) {
sparse_keymap_free(asus->inputdev);
input_unregister_device(asus->inputdev);
}
asus->inputdev = NULL;
}
/*
* ACPI driver
*/
static void asus_acpi_notify(struct acpi_device *device, u32 event)
{
struct asus_laptop *asus = acpi_driver_data(device);
u16 count;
/* 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);
/* Brightness events are special */
if (event >= ATKD_BR_MIN && event <= ATKD_BR_MAX) {
/* Ignore them completely if the acpi video driver is used */
if (asus->backlight_device != NULL) {
/* Update the backlight device. */
asus_backlight_notify(asus);
}
return ;
}
asus_input_notify(asus, event);
}
static DEVICE_ATTR(infos, S_IRUGO, show_infos, NULL);
static DEVICE_ATTR(wlan, S_IRUGO | S_IWUSR, show_wlan, store_wlan);
static DEVICE_ATTR(bluetooth, S_IRUGO | S_IWUSR,
show_bluetooth, store_bluetooth);
static DEVICE_ATTR(wimax, S_IRUGO | S_IWUSR, show_wimax, store_wimax);
static DEVICE_ATTR(wwan, S_IRUGO | S_IWUSR, show_wwan, store_wwan);
static DEVICE_ATTR(display, S_IWUSR, NULL, store_disp);
static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd);
static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl);
static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw);
static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps);
static struct attribute *asus_attributes[] = {
&dev_attr_infos.attr,
&dev_attr_wlan.attr,
&dev_attr_bluetooth.attr,
&dev_attr_wimax.attr,
&dev_attr_wwan.attr,
&dev_attr_display.attr,
&dev_attr_ledd.attr,
&dev_attr_ls_level.attr,
&dev_attr_ls_switch.attr,
&dev_attr_gps.attr,
NULL
};
static mode_t asus_sysfs_is_visible(struct kobject *kobj,
struct attribute *attr,
int idx)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct platform_device *pdev = to_platform_device(dev);
struct asus_laptop *asus = platform_get_drvdata(pdev);
acpi_handle handle = asus->handle;
bool supported;
if (attr == &dev_attr_wlan.attr) {
supported = !acpi_check_handle(handle, METHOD_WLAN, NULL);
} else if (attr == &dev_attr_bluetooth.attr) {
supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL);
} else if (attr == &dev_attr_display.attr) {
supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL);
} else if (attr == &dev_attr_wimax.attr) {
supported =
!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL);
} else if (attr == &dev_attr_wwan.attr) {
supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL);
} else if (attr == &dev_attr_ledd.attr) {
supported = !acpi_check_handle(handle, METHOD_LEDD, NULL);
} else if (attr == &dev_attr_ls_switch.attr ||
attr == &dev_attr_ls_level.attr) {
supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) &&
!acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL);
} else if (attr == &dev_attr_gps.attr) {
supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) &&
!acpi_check_handle(handle, METHOD_GPS_OFF, NULL) &&
!acpi_check_handle(handle, METHOD_GPS_STATUS, NULL);
} else {
supported = true;
}
return supported ? attr->mode : 0;
}
static const struct attribute_group asus_attr_group = {
.is_visible = asus_sysfs_is_visible,
.attrs = asus_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,
&asus_attr_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, &asus_attr_group);
platform_device_unregister(asus->platform_device);
}
static struct platform_driver platform_driver = {
.driver = {
.name = ASUS_LAPTOP_FILE,
.owner = THIS_MODULE,
}
};
/*
* 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 ... */
if (write_acpi_int(asus->handle, "CWAP", wapf))
pr_err("Error calling CWAP(%d)\n", 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) {
kfree(buffer.pointer);
return -ENOMEM;
}
if (*string)
pr_notice(" %s model detected\n", string);
/*
* The HWRS method return informations about the hardware.
* 0x80 bit is for WLAN, 0x100 for Bluetooth,
* 0x40 for WWAN, 0x10 for WIMAX.
* The significance of others is yet to be found.
*/
status =
acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result);
if (!ACPI_FAILURE(status))
pr_notice(" HRWS returned %x", (int)hwrs_result);
if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL))
asus->have_rsts = true;
kfree(model);
return AE_OK;
}
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;
/* WLED and BLED are on by default */
if (bluetooth_status >= 0)
asus_bluetooth_set(asus, !!bluetooth_status);
if (wlan_status >= 0)
asus_wlan_set(asus, !!wlan_status);
if (wimax_status >= 0)
asus_wimax_set(asus, !!wimax_status);
if (wwan_status >= 0)
asus_wwan_set(asus, !!wwan_status);
/* Keyboard Backlight is on by default */
if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL))
asus_kled_set(asus, 1);
/* LED display is off by default */
asus->ledd_status = 0xFFF;
/* Set initial values of light sensor and level */
asus->light_switch = 0; /* Default to light sensor disabled */
asus->light_level = 5; /* level 5 for sensor sensitivity */
if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
!acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
asus_als_switch(asus, asus->light_switch);
asus_als_level(asus, asus->light_level);
}
return result;
}
static void __devinit asus_dmi_check(void)
{
const char *model;
model = dmi_get_system_info(DMI_PRODUCT_NAME);
if (!model)
return;
/* On L1400B WLED control the sound card, don't mess with it ... */
if (strncmp(model, "L1400B", 6) == 0) {
wlan_status = -1;
}
}
static bool asus_device_present;
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;
asus_dmi_check();
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;
result = asus_rfkill_init(asus);
if (result)
goto fail_rfkill;
asus_device_present = true;
return 0;
fail_rfkill:
asus_led_exit(asus);
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_rfkill_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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