2 * asus-laptop.c - Asus Laptop Support
5 * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
6 * Copyright (C) 2006-2007 Corentin Chary
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * The development page for this driver is located at
24 * http://sourceforge.net/projects/acpi4asus/
27 * Pontus Fuchs - Helper functions, cleanup
28 * Johann Wiesner - Small compile fixes
29 * John Belmonte - ACPI code for Toshiba laptop was a good starting point.
30 * Eric Burghard - LED display support for W1N
31 * Josh Green - Light Sens support
32 * Thomas Tuttle - His first patch for led support was very helpfull
33 * Sam Lin - GPS support
36 #include <linux/kernel.h>
37 #include <linux/module.h>
38 #include <linux/init.h>
39 #include <linux/types.h>
40 #include <linux/err.h>
41 #include <linux/proc_fs.h>
42 #include <linux/backlight.h>
44 #include <linux/leds.h>
45 #include <linux/platform_device.h>
46 #include <acpi/acpi_drivers.h>
47 #include <acpi/acpi_bus.h>
48 #include <asm/uaccess.h>
49 #include <linux/input.h>
51 #define ASUS_LAPTOP_VERSION "0.42"
53 #define ASUS_HOTK_NAME "Asus Laptop Support"
54 #define ASUS_HOTK_CLASS "hotkey"
55 #define ASUS_HOTK_DEVICE_NAME "Hotkey"
56 #define ASUS_HOTK_FILE "asus-laptop"
57 #define ASUS_HOTK_PREFIX "\\_SB.ATKD."
60 * Some events we use, same for all Asus
62 #define ATKD_BR_UP 0x10
63 #define ATKD_BR_DOWN 0x20
64 #define ATKD_LCD_ON 0x33
65 #define ATKD_LCD_OFF 0x34
68 * Known bits returned by \_SB.ATKD.HWRS
74 * Flags for hotk status
75 * WL_ON and BT_ON are also used for wireless_status()
77 #define WL_ON 0x01 //internal Wifi
78 #define BT_ON 0x02 //internal Bluetooth
79 #define MLED_ON 0x04 //mail LED
80 #define TLED_ON 0x08 //touchpad LED
81 #define RLED_ON 0x10 //Record LED
82 #define PLED_ON 0x20 //Phone LED
83 #define GLED_ON 0x40 //Gaming LED
84 #define LCD_ON 0x80 //LCD backlight
85 #define GPS_ON 0x100 //GPS
87 #define ASUS_LOG ASUS_HOTK_FILE ": "
88 #define ASUS_ERR KERN_ERR ASUS_LOG
89 #define ASUS_WARNING KERN_WARNING ASUS_LOG
90 #define ASUS_NOTICE KERN_NOTICE ASUS_LOG
91 #define ASUS_INFO KERN_INFO ASUS_LOG
92 #define ASUS_DEBUG KERN_DEBUG ASUS_LOG
94 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
95 MODULE_DESCRIPTION(ASUS_HOTK_NAME
);
96 MODULE_LICENSE("GPL");
98 /* WAPF defines the behavior of the Fn+Fx wlan key
99 * The significance of values is yet to be found, but
101 * 0x0 will do nothing
102 * 0x1 will allow to control the device with Fn+Fx key.
103 * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key
104 * 0x5 like 0x1 or 0x4
105 * So, if something doesn't work as you want, just try other values =)
107 static uint wapf
= 1;
108 module_param(wapf
, uint
, 0644);
109 MODULE_PARM_DESC(wapf
, "WAPF value");
111 #define ASUS_HANDLE(object, paths...) \
112 static acpi_handle object##_handle = NULL; \
113 static char *object##_paths[] = { paths }
116 ASUS_HANDLE(mled_set
, ASUS_HOTK_PREFIX
"MLED");
117 ASUS_HANDLE(tled_set
, ASUS_HOTK_PREFIX
"TLED");
118 ASUS_HANDLE(rled_set
, ASUS_HOTK_PREFIX
"RLED"); /* W1JC */
119 ASUS_HANDLE(pled_set
, ASUS_HOTK_PREFIX
"PLED"); /* A7J */
120 ASUS_HANDLE(gled_set
, ASUS_HOTK_PREFIX
"GLED"); /* G1, G2 (probably) */
123 ASUS_HANDLE(ledd_set
, ASUS_HOTK_PREFIX
"SLCM");
125 /* Bluetooth and WLAN
126 * WLED and BLED are not handled like other XLED, because in some dsdt
127 * they also control the WLAN/Bluetooth device.
129 ASUS_HANDLE(wl_switch
, ASUS_HOTK_PREFIX
"WLED");
130 ASUS_HANDLE(bt_switch
, ASUS_HOTK_PREFIX
"BLED");
131 ASUS_HANDLE(wireless_status
, ASUS_HOTK_PREFIX
"RSTS"); /* All new models */
134 ASUS_HANDLE(brightness_set
, ASUS_HOTK_PREFIX
"SPLV");
135 ASUS_HANDLE(brightness_get
, ASUS_HOTK_PREFIX
"GPLV");
138 ASUS_HANDLE(lcd_switch
, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */
139 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */
140 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */
141 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */
142 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */
143 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */
144 "\\_SB.PCI0.PX40.Q10", /* S1x */
145 "\\Q10"); /* A2x, L2D, L3D, M2E */
148 ASUS_HANDLE(display_set
, ASUS_HOTK_PREFIX
"SDSP");
149 ASUS_HANDLE(display_get
, "\\_SB.PCI0.P0P1.VGA.GETD", /* A6B, A6K A6R A7D F3JM L4R M6R A3G
150 M6A M6V VX-1 V6J V6V W3Z */
151 "\\_SB.PCI0.P0P2.VGA.GETD", /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V
152 S5A M5A z33A W1Jc W2V G1 */
153 "\\_SB.PCI0.P0P3.VGA.GETD", /* A6V A6Q */
154 "\\_SB.PCI0.P0PA.VGA.GETD", /* A6T, A6M */
155 "\\_SB.PCI0.PCI1.VGAC.NMAP", /* L3C */
156 "\\_SB.PCI0.VGA.GETD", /* Z96F */
158 "\\ADVG", /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */
160 "\\INFB", /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */
161 "\\SSTE"); /* A3F A6F A3N A3L M6N W3N W6A */
163 ASUS_HANDLE(ls_switch
, ASUS_HOTK_PREFIX
"ALSC"); /* Z71A Z71V */
164 ASUS_HANDLE(ls_level
, ASUS_HOTK_PREFIX
"ALSL"); /* Z71A Z71V */
167 /* R2H use different handle for GPS on/off */
168 ASUS_HANDLE(gps_on
, ASUS_HOTK_PREFIX
"SDON"); /* R2H */
169 ASUS_HANDLE(gps_off
, ASUS_HOTK_PREFIX
"SDOF"); /* R2H */
170 ASUS_HANDLE(gps_status
, ASUS_HOTK_PREFIX
"GPST");
173 * This is the main structure, we can use it to store anything interesting
174 * about the hotk device
177 char *name
; //laptop name
178 struct acpi_device
*device
; //the device we are in
179 acpi_handle handle
; //the handle of the hotk device
180 char status
; //status of the hotk, for LEDs, ...
181 u32 ledd_status
; //status of the LED display
182 u8 light_level
; //light sensor level
183 u8 light_switch
; //light sensor switch value
184 u16 event_count
[128]; //count for each event TODO make this better
185 struct input_dev
*inputdev
;
190 * This header is made available to allow proper configuration given model,
191 * revision number , ... this info cannot go in struct asus_hotk because it is
192 * available before the hotk
194 static struct acpi_table_header
*asus_info
;
196 /* The actual device the driver binds to */
197 static struct asus_hotk
*hotk
;
200 * The hotkey driver declaration
202 static const struct acpi_device_id asus_device_ids
[] = {
206 MODULE_DEVICE_TABLE(acpi
, asus_device_ids
);
208 static int asus_hotk_add(struct acpi_device
*device
);
209 static int asus_hotk_remove(struct acpi_device
*device
, int type
);
210 static void asus_hotk_notify(struct acpi_device
*device
, u32 event
);
212 static struct acpi_driver asus_hotk_driver
= {
213 .name
= ASUS_HOTK_NAME
,
214 .class = ASUS_HOTK_CLASS
,
215 .ids
= asus_device_ids
,
216 .flags
= ACPI_DRIVER_ALL_NOTIFY_EVENTS
,
218 .add
= asus_hotk_add
,
219 .remove
= asus_hotk_remove
,
220 .notify
= asus_hotk_notify
,
224 /* The backlight device /sys/class/backlight */
225 static struct backlight_device
*asus_backlight_device
;
228 * The backlight class declaration
230 static int read_brightness(struct backlight_device
*bd
);
231 static int update_bl_status(struct backlight_device
*bd
);
232 static struct backlight_ops asusbl_ops
= {
233 .get_brightness
= read_brightness
,
234 .update_status
= update_bl_status
,
237 /* These functions actually update the LED's, and are called from a
238 * workqueue. By doing this as separate work rather than when the LED
239 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
240 * potentially bad time, such as a timer interrupt. */
241 static struct workqueue_struct
*led_workqueue
;
243 #define ASUS_LED(object, ledname) \
244 static void object##_led_set(struct led_classdev *led_cdev, \
245 enum led_brightness value); \
246 static void object##_led_update(struct work_struct *ignored); \
247 static int object##_led_wk; \
248 static DECLARE_WORK(object##_led_work, object##_led_update); \
249 static struct led_classdev object##_led = { \
250 .name = "asus::" ledname, \
251 .brightness_set = object##_led_set, \
254 ASUS_LED(mled
, "mail");
255 ASUS_LED(tled
, "touchpad");
256 ASUS_LED(rled
, "record");
257 ASUS_LED(pled
, "phone");
258 ASUS_LED(gled
, "gaming");
266 enum { KE_KEY
, KE_END
};
268 static struct key_entry asus_keymap
[] = {
269 {KE_KEY
, 0x30, KEY_VOLUMEUP
},
270 {KE_KEY
, 0x31, KEY_VOLUMEDOWN
},
271 {KE_KEY
, 0x32, KEY_MUTE
},
272 {KE_KEY
, 0x33, KEY_SWITCHVIDEOMODE
},
273 {KE_KEY
, 0x34, KEY_SWITCHVIDEOMODE
},
274 {KE_KEY
, 0x40, KEY_PREVIOUSSONG
},
275 {KE_KEY
, 0x41, KEY_NEXTSONG
},
276 {KE_KEY
, 0x43, KEY_STOPCD
},
277 {KE_KEY
, 0x45, KEY_PLAYPAUSE
},
278 {KE_KEY
, 0x50, KEY_EMAIL
},
279 {KE_KEY
, 0x51, KEY_WWW
},
280 {KE_KEY
, 0x5C, KEY_SCREENLOCK
}, /* Screenlock */
281 {KE_KEY
, 0x5D, KEY_WLAN
},
282 {KE_KEY
, 0x61, KEY_SWITCHVIDEOMODE
},
283 {KE_KEY
, 0x6B, BTN_TOUCH
}, /* Lock Mouse */
284 {KE_KEY
, 0x82, KEY_CAMERA
},
285 {KE_KEY
, 0x8A, KEY_PROG1
},
286 {KE_KEY
, 0x95, KEY_MEDIA
},
287 {KE_KEY
, 0x99, KEY_PHONE
},
292 * This function evaluates an ACPI method, given an int as parameter, the
293 * method is searched within the scope of the handle, can be NULL. The output
294 * of the method is written is output, which can also be NULL
296 * returns 0 if write is successful, -1 else.
298 static int write_acpi_int(acpi_handle handle
, const char *method
, int val
,
299 struct acpi_buffer
*output
)
301 struct acpi_object_list params
; //list of input parameters (an int here)
302 union acpi_object in_obj
; //the only param we use
309 params
.pointer
= &in_obj
;
310 in_obj
.type
= ACPI_TYPE_INTEGER
;
311 in_obj
.integer
.value
= val
;
313 status
= acpi_evaluate_object(handle
, (char *)method
, ¶ms
, output
);
320 static int read_wireless_status(int mask
)
322 unsigned long long status
;
323 acpi_status rv
= AE_OK
;
325 if (!wireless_status_handle
)
326 return (hotk
->status
& mask
) ? 1 : 0;
328 rv
= acpi_evaluate_integer(wireless_status_handle
, NULL
, NULL
, &status
);
329 if (ACPI_FAILURE(rv
))
330 printk(ASUS_WARNING
"Error reading Wireless status\n");
332 return (status
& mask
) ? 1 : 0;
334 return (hotk
->status
& mask
) ? 1 : 0;
337 static int read_gps_status(void)
339 unsigned long long status
;
340 acpi_status rv
= AE_OK
;
342 rv
= acpi_evaluate_integer(gps_status_handle
, NULL
, NULL
, &status
);
343 if (ACPI_FAILURE(rv
))
344 printk(ASUS_WARNING
"Error reading GPS status\n");
346 return status
? 1 : 0;
348 return (hotk
->status
& GPS_ON
) ? 1 : 0;
351 /* Generic LED functions */
352 static int read_status(int mask
)
354 /* There is a special method for both wireless devices */
355 if (mask
== BT_ON
|| mask
== WL_ON
)
356 return read_wireless_status(mask
);
357 else if (mask
== GPS_ON
)
358 return read_gps_status();
360 return (hotk
->status
& mask
) ? 1 : 0;
363 static void write_status(acpi_handle handle
, int out
, int mask
)
365 hotk
->status
= (out
) ? (hotk
->status
| mask
) : (hotk
->status
& ~mask
);
372 out
= (out
& 0x1) + 1;
375 handle
= (out
) ? gps_on_handle
: gps_off_handle
;
383 if (write_acpi_int(handle
, NULL
, out
, NULL
))
384 printk(ASUS_WARNING
" write failed %x\n", mask
);
387 /* /sys/class/led handlers */
388 #define ASUS_LED_HANDLER(object, mask) \
389 static void object##_led_set(struct led_classdev *led_cdev, \
390 enum led_brightness value) \
392 object##_led_wk = (value > 0) ? 1 : 0; \
393 queue_work(led_workqueue, &object##_led_work); \
395 static void object##_led_update(struct work_struct *ignored) \
397 int value = object##_led_wk; \
398 write_status(object##_set_handle, value, (mask)); \
401 ASUS_LED_HANDLER(mled
, MLED_ON
);
402 ASUS_LED_HANDLER(pled
, PLED_ON
);
403 ASUS_LED_HANDLER(rled
, RLED_ON
);
404 ASUS_LED_HANDLER(tled
, TLED_ON
);
405 ASUS_LED_HANDLER(gled
, GLED_ON
);
407 static int get_lcd_state(void)
409 return read_status(LCD_ON
);
412 static int set_lcd_state(int value
)
415 acpi_status status
= 0;
419 if (lcd
== get_lcd_state())
422 if (lcd_switch_handle
) {
423 status
= acpi_evaluate_object(lcd_switch_handle
,
426 if (ACPI_FAILURE(status
))
427 printk(ASUS_WARNING
"Error switching LCD\n");
430 write_status(NULL
, lcd
, LCD_ON
);
434 static void lcd_blank(int blank
)
436 struct backlight_device
*bd
= asus_backlight_device
;
439 bd
->props
.power
= blank
;
440 backlight_update_status(bd
);
444 static int read_brightness(struct backlight_device
*bd
)
446 unsigned long long value
;
447 acpi_status rv
= AE_OK
;
449 rv
= acpi_evaluate_integer(brightness_get_handle
, NULL
, NULL
, &value
);
450 if (ACPI_FAILURE(rv
))
451 printk(ASUS_WARNING
"Error reading brightness\n");
456 static int set_brightness(struct backlight_device
*bd
, int value
)
460 value
= (0 < value
) ? ((15 < value
) ? 15 : value
) : 0;
461 /* 0 <= value <= 15 */
463 if (write_acpi_int(brightness_set_handle
, NULL
, value
, NULL
)) {
464 printk(ASUS_WARNING
"Error changing brightness\n");
471 static int update_bl_status(struct backlight_device
*bd
)
474 int value
= bd
->props
.brightness
;
476 rv
= set_brightness(bd
, value
);
480 value
= (bd
->props
.power
== FB_BLANK_UNBLANK
) ? 1 : 0;
481 return set_lcd_state(value
);
485 * Platform device handlers
489 * We write our info in page, we begin at offset off and cannot write more
490 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
491 * number of bytes written in page
493 static ssize_t
show_infos(struct device
*dev
,
494 struct device_attribute
*attr
, char *page
)
497 unsigned long long temp
;
498 char buf
[16]; //enough for all info
499 acpi_status rv
= AE_OK
;
502 * We use the easy way, we don't care of off and count, so we don't set eof
506 len
+= sprintf(page
, ASUS_HOTK_NAME
" " ASUS_LAPTOP_VERSION
"\n");
507 len
+= sprintf(page
+ len
, "Model reference : %s\n", hotk
->name
);
509 * The SFUN method probably allows the original driver to get the list
510 * of features supported by a given model. For now, 0x0100 or 0x0800
511 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
512 * The significance of others is yet to be found.
514 rv
= acpi_evaluate_integer(hotk
->handle
, "SFUN", NULL
, &temp
);
515 if (!ACPI_FAILURE(rv
))
516 len
+= sprintf(page
+ len
, "SFUN value : 0x%04x\n",
519 * Another value for userspace: the ASYM method returns 0x02 for
520 * battery low and 0x04 for battery critical, its readings tend to be
521 * more accurate than those provided by _BST.
522 * Note: since not all the laptops provide this method, errors are
525 rv
= acpi_evaluate_integer(hotk
->handle
, "ASYM", NULL
, &temp
);
526 if (!ACPI_FAILURE(rv
))
527 len
+= sprintf(page
+ len
, "ASYM value : 0x%04x\n",
530 snprintf(buf
, 16, "%d", asus_info
->length
);
531 len
+= sprintf(page
+ len
, "DSDT length : %s\n", buf
);
532 snprintf(buf
, 16, "%d", asus_info
->checksum
);
533 len
+= sprintf(page
+ len
, "DSDT checksum : %s\n", buf
);
534 snprintf(buf
, 16, "%d", asus_info
->revision
);
535 len
+= sprintf(page
+ len
, "DSDT revision : %s\n", buf
);
536 snprintf(buf
, 7, "%s", asus_info
->oem_id
);
537 len
+= sprintf(page
+ len
, "OEM id : %s\n", buf
);
538 snprintf(buf
, 9, "%s", asus_info
->oem_table_id
);
539 len
+= sprintf(page
+ len
, "OEM table id : %s\n", buf
);
540 snprintf(buf
, 16, "%x", asus_info
->oem_revision
);
541 len
+= sprintf(page
+ len
, "OEM revision : 0x%s\n", buf
);
542 snprintf(buf
, 5, "%s", asus_info
->asl_compiler_id
);
543 len
+= sprintf(page
+ len
, "ASL comp vendor id : %s\n", buf
);
544 snprintf(buf
, 16, "%x", asus_info
->asl_compiler_revision
);
545 len
+= sprintf(page
+ len
, "ASL comp revision : 0x%s\n", buf
);
551 static int parse_arg(const char *buf
, unsigned long count
, int *val
)
557 if (sscanf(buf
, "%i", val
) != 1)
562 static ssize_t
store_status(const char *buf
, size_t count
,
563 acpi_handle handle
, int mask
)
568 rv
= parse_arg(buf
, count
, &value
);
572 write_status(handle
, out
, mask
);
580 static ssize_t
show_ledd(struct device
*dev
,
581 struct device_attribute
*attr
, char *buf
)
583 return sprintf(buf
, "0x%08x\n", hotk
->ledd_status
);
586 static ssize_t
store_ledd(struct device
*dev
, struct device_attribute
*attr
,
587 const char *buf
, size_t count
)
591 rv
= parse_arg(buf
, count
, &value
);
593 if (write_acpi_int(ledd_set_handle
, NULL
, value
, NULL
))
594 printk(ASUS_WARNING
"LED display write failed\n");
596 hotk
->ledd_status
= (u32
) value
;
604 static ssize_t
show_wlan(struct device
*dev
,
605 struct device_attribute
*attr
, char *buf
)
607 return sprintf(buf
, "%d\n", read_status(WL_ON
));
610 static ssize_t
store_wlan(struct device
*dev
, struct device_attribute
*attr
,
611 const char *buf
, size_t count
)
613 return store_status(buf
, count
, wl_switch_handle
, WL_ON
);
619 static ssize_t
show_bluetooth(struct device
*dev
,
620 struct device_attribute
*attr
, char *buf
)
622 return sprintf(buf
, "%d\n", read_status(BT_ON
));
625 static ssize_t
store_bluetooth(struct device
*dev
,
626 struct device_attribute
*attr
, const char *buf
,
629 return store_status(buf
, count
, bt_switch_handle
, BT_ON
);
635 static void set_display(int value
)
637 /* no sanity check needed for now */
638 if (write_acpi_int(display_set_handle
, NULL
, value
, NULL
))
639 printk(ASUS_WARNING
"Error setting display\n");
643 static int read_display(void)
645 unsigned long long value
= 0;
646 acpi_status rv
= AE_OK
;
648 /* In most of the case, we know how to set the display, but sometime
650 if (display_get_handle
) {
651 rv
= acpi_evaluate_integer(display_get_handle
, NULL
,
653 if (ACPI_FAILURE(rv
))
654 printk(ASUS_WARNING
"Error reading display status\n");
657 value
&= 0x0F; /* needed for some models, shouldn't hurt others */
663 * Now, *this* one could be more user-friendly, but so far, no-one has
664 * complained. The significance of bits is the same as in store_disp()
666 static ssize_t
show_disp(struct device
*dev
,
667 struct device_attribute
*attr
, char *buf
)
669 return sprintf(buf
, "%d\n", read_display());
673 * Experimental support for display switching. As of now: 1 should activate
674 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
675 * Any combination (bitwise) of these will suffice. I never actually tested 4
676 * displays hooked up simultaneously, so be warned. See the acpi4asus README
679 static ssize_t
store_disp(struct device
*dev
, struct device_attribute
*attr
,
680 const char *buf
, size_t count
)
684 rv
= parse_arg(buf
, count
, &value
);
693 static void set_light_sens_switch(int value
)
695 if (write_acpi_int(ls_switch_handle
, NULL
, value
, NULL
))
696 printk(ASUS_WARNING
"Error setting light sensor switch\n");
697 hotk
->light_switch
= value
;
700 static ssize_t
show_lssw(struct device
*dev
,
701 struct device_attribute
*attr
, char *buf
)
703 return sprintf(buf
, "%d\n", hotk
->light_switch
);
706 static ssize_t
store_lssw(struct device
*dev
, struct device_attribute
*attr
,
707 const char *buf
, size_t count
)
711 rv
= parse_arg(buf
, count
, &value
);
713 set_light_sens_switch(value
? 1 : 0);
718 static void set_light_sens_level(int value
)
720 if (write_acpi_int(ls_level_handle
, NULL
, value
, NULL
))
721 printk(ASUS_WARNING
"Error setting light sensor level\n");
722 hotk
->light_level
= value
;
725 static ssize_t
show_lslvl(struct device
*dev
,
726 struct device_attribute
*attr
, char *buf
)
728 return sprintf(buf
, "%d\n", hotk
->light_level
);
731 static ssize_t
store_lslvl(struct device
*dev
, struct device_attribute
*attr
,
732 const char *buf
, size_t count
)
736 rv
= parse_arg(buf
, count
, &value
);
738 value
= (0 < value
) ? ((15 < value
) ? 15 : value
) : 0;
739 /* 0 <= value <= 15 */
740 set_light_sens_level(value
);
749 static ssize_t
show_gps(struct device
*dev
,
750 struct device_attribute
*attr
, char *buf
)
752 return sprintf(buf
, "%d\n", read_status(GPS_ON
));
755 static ssize_t
store_gps(struct device
*dev
, struct device_attribute
*attr
,
756 const char *buf
, size_t count
)
758 return store_status(buf
, count
, NULL
, GPS_ON
);
764 static struct key_entry
*asus_get_entry_by_scancode(int code
)
766 struct key_entry
*key
;
768 for (key
= asus_keymap
; key
->type
!= KE_END
; key
++)
769 if (code
== key
->code
)
775 static struct key_entry
*asus_get_entry_by_keycode(int code
)
777 struct key_entry
*key
;
779 for (key
= asus_keymap
; key
->type
!= KE_END
; key
++)
780 if (code
== key
->keycode
&& key
->type
== KE_KEY
)
786 static int asus_getkeycode(struct input_dev
*dev
, int scancode
, int *keycode
)
788 struct key_entry
*key
= asus_get_entry_by_scancode(scancode
);
790 if (key
&& key
->type
== KE_KEY
) {
791 *keycode
= key
->keycode
;
798 static int asus_setkeycode(struct input_dev
*dev
, int scancode
, int keycode
)
800 struct key_entry
*key
;
803 if (keycode
< 0 || keycode
> KEY_MAX
)
806 key
= asus_get_entry_by_scancode(scancode
);
807 if (key
&& key
->type
== KE_KEY
) {
808 old_keycode
= key
->keycode
;
809 key
->keycode
= keycode
;
810 set_bit(keycode
, dev
->keybit
);
811 if (!asus_get_entry_by_keycode(old_keycode
))
812 clear_bit(old_keycode
, dev
->keybit
);
819 static void asus_hotk_notify(struct acpi_device
*device
, u32 event
)
821 static struct key_entry
*key
;
824 /* TODO Find a better way to handle events count. */
829 * We need to tell the backlight device when the backlight power is
832 if (event
== ATKD_LCD_ON
) {
833 write_status(NULL
, 1, LCD_ON
);
834 lcd_blank(FB_BLANK_UNBLANK
);
835 } else if (event
== ATKD_LCD_OFF
) {
836 write_status(NULL
, 0, LCD_ON
);
837 lcd_blank(FB_BLANK_POWERDOWN
);
840 count
= hotk
->event_count
[event
% 128]++;
841 acpi_bus_generate_proc_event(hotk
->device
, event
, count
);
842 acpi_bus_generate_netlink_event(hotk
->device
->pnp
.device_class
,
843 dev_name(&hotk
->device
->dev
), event
,
846 if (hotk
->inputdev
) {
847 key
= asus_get_entry_by_scancode(event
);
853 input_report_key(hotk
->inputdev
, key
->keycode
, 1);
854 input_sync(hotk
->inputdev
);
855 input_report_key(hotk
->inputdev
, key
->keycode
, 0);
856 input_sync(hotk
->inputdev
);
862 #define ASUS_CREATE_DEVICE_ATTR(_name) \
863 struct device_attribute dev_attr_##_name = { \
865 .name = __stringify(_name), \
871 #define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \
873 dev_attr_##_name.attr.mode = _mode; \
874 dev_attr_##_name.show = _show; \
875 dev_attr_##_name.store = _store; \
878 static ASUS_CREATE_DEVICE_ATTR(infos
);
879 static ASUS_CREATE_DEVICE_ATTR(wlan
);
880 static ASUS_CREATE_DEVICE_ATTR(bluetooth
);
881 static ASUS_CREATE_DEVICE_ATTR(display
);
882 static ASUS_CREATE_DEVICE_ATTR(ledd
);
883 static ASUS_CREATE_DEVICE_ATTR(ls_switch
);
884 static ASUS_CREATE_DEVICE_ATTR(ls_level
);
885 static ASUS_CREATE_DEVICE_ATTR(gps
);
887 static struct attribute
*asuspf_attributes
[] = {
888 &dev_attr_infos
.attr
,
890 &dev_attr_bluetooth
.attr
,
891 &dev_attr_display
.attr
,
893 &dev_attr_ls_switch
.attr
,
894 &dev_attr_ls_level
.attr
,
899 static struct attribute_group asuspf_attribute_group
= {
900 .attrs
= asuspf_attributes
903 static struct platform_driver asuspf_driver
= {
905 .name
= ASUS_HOTK_FILE
,
906 .owner
= THIS_MODULE
,
910 static struct platform_device
*asuspf_device
;
912 static void asus_hotk_add_fs(void)
914 ASUS_SET_DEVICE_ATTR(infos
, 0444, show_infos
, NULL
);
916 if (wl_switch_handle
)
917 ASUS_SET_DEVICE_ATTR(wlan
, 0644, show_wlan
, store_wlan
);
919 if (bt_switch_handle
)
920 ASUS_SET_DEVICE_ATTR(bluetooth
, 0644,
921 show_bluetooth
, store_bluetooth
);
923 if (display_set_handle
&& display_get_handle
)
924 ASUS_SET_DEVICE_ATTR(display
, 0644, show_disp
, store_disp
);
925 else if (display_set_handle
)
926 ASUS_SET_DEVICE_ATTR(display
, 0200, NULL
, store_disp
);
929 ASUS_SET_DEVICE_ATTR(ledd
, 0644, show_ledd
, store_ledd
);
931 if (ls_switch_handle
&& ls_level_handle
) {
932 ASUS_SET_DEVICE_ATTR(ls_level
, 0644, show_lslvl
, store_lslvl
);
933 ASUS_SET_DEVICE_ATTR(ls_switch
, 0644, show_lssw
, store_lssw
);
936 if (gps_status_handle
&& gps_on_handle
&& gps_off_handle
)
937 ASUS_SET_DEVICE_ATTR(gps
, 0644, show_gps
, store_gps
);
940 static int asus_handle_init(char *name
, acpi_handle
* handle
,
941 char **paths
, int num_paths
)
946 for (i
= 0; i
< num_paths
; i
++) {
947 status
= acpi_get_handle(NULL
, paths
[i
], handle
);
948 if (ACPI_SUCCESS(status
))
956 #define ASUS_HANDLE_INIT(object) \
957 asus_handle_init(#object, &object##_handle, object##_paths, \
958 ARRAY_SIZE(object##_paths))
961 * This function is used to initialize the hotk with right values. In this
962 * method, we can make all the detection we want, and modify the hotk struct
964 static int asus_hotk_get_info(void)
966 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
967 union acpi_object
*model
= NULL
;
968 unsigned long long bsts_result
, hwrs_result
;
973 * Get DSDT headers early enough to allow for differentiating between
974 * models, but late enough to allow acpi_bus_register_driver() to fail
975 * before doing anything ACPI-specific. Should we encounter a machine,
976 * which needs special handling (i.e. its hotkey device has a different
977 * HID), this bit will be moved. A global variable asus_info contains
980 status
= acpi_get_table(ACPI_SIG_DSDT
, 1, &asus_info
);
981 if (ACPI_FAILURE(status
))
982 printk(ASUS_WARNING
"Couldn't get the DSDT table header\n");
984 /* We have to write 0 on init this far for all ASUS models */
985 if (write_acpi_int(hotk
->handle
, "INIT", 0, &buffer
)) {
986 printk(ASUS_ERR
"Hotkey initialization failed\n");
990 /* This needs to be called for some laptops to init properly */
992 acpi_evaluate_integer(hotk
->handle
, "BSTS", NULL
, &bsts_result
);
993 if (ACPI_FAILURE(status
))
994 printk(ASUS_WARNING
"Error calling BSTS\n");
995 else if (bsts_result
)
996 printk(ASUS_NOTICE
"BSTS called, 0x%02x returned\n",
1000 write_acpi_int(hotk
->handle
, "CWAP", wapf
, NULL
);
1003 * Try to match the object returned by INIT to the specific model.
1004 * Handle every possible object (or the lack of thereof) the DSDT
1005 * writers might throw at us. When in trouble, we pass NULL to
1006 * asus_model_match() and try something completely different.
1008 if (buffer
.pointer
) {
1009 model
= buffer
.pointer
;
1010 switch (model
->type
) {
1011 case ACPI_TYPE_STRING
:
1012 string
= model
->string
.pointer
;
1014 case ACPI_TYPE_BUFFER
:
1015 string
= model
->buffer
.pointer
;
1022 hotk
->name
= kstrdup(string
, GFP_KERNEL
);
1027 printk(ASUS_NOTICE
" %s model detected\n", string
);
1029 ASUS_HANDLE_INIT(mled_set
);
1030 ASUS_HANDLE_INIT(tled_set
);
1031 ASUS_HANDLE_INIT(rled_set
);
1032 ASUS_HANDLE_INIT(pled_set
);
1033 ASUS_HANDLE_INIT(gled_set
);
1035 ASUS_HANDLE_INIT(ledd_set
);
1038 * The HWRS method return informations about the hardware.
1039 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
1040 * The significance of others is yet to be found.
1041 * If we don't find the method, we assume the device are present.
1044 acpi_evaluate_integer(hotk
->handle
, "HRWS", NULL
, &hwrs_result
);
1045 if (ACPI_FAILURE(status
))
1046 hwrs_result
= WL_HWRS
| BT_HWRS
;
1048 if (hwrs_result
& WL_HWRS
)
1049 ASUS_HANDLE_INIT(wl_switch
);
1050 if (hwrs_result
& BT_HWRS
)
1051 ASUS_HANDLE_INIT(bt_switch
);
1053 ASUS_HANDLE_INIT(wireless_status
);
1055 ASUS_HANDLE_INIT(brightness_set
);
1056 ASUS_HANDLE_INIT(brightness_get
);
1058 ASUS_HANDLE_INIT(lcd_switch
);
1060 ASUS_HANDLE_INIT(display_set
);
1061 ASUS_HANDLE_INIT(display_get
);
1063 /* There is a lot of models with "ALSL", but a few get
1064 a real light sens, so we need to check it. */
1065 if (!ASUS_HANDLE_INIT(ls_switch
))
1066 ASUS_HANDLE_INIT(ls_level
);
1068 ASUS_HANDLE_INIT(gps_on
);
1069 ASUS_HANDLE_INIT(gps_off
);
1070 ASUS_HANDLE_INIT(gps_status
);
1077 static int asus_input_init(void)
1079 const struct key_entry
*key
;
1082 hotk
->inputdev
= input_allocate_device();
1083 if (!hotk
->inputdev
) {
1084 printk(ASUS_INFO
"Unable to allocate input device\n");
1087 hotk
->inputdev
->name
= "Asus Laptop extra buttons";
1088 hotk
->inputdev
->phys
= ASUS_HOTK_FILE
"/input0";
1089 hotk
->inputdev
->id
.bustype
= BUS_HOST
;
1090 hotk
->inputdev
->getkeycode
= asus_getkeycode
;
1091 hotk
->inputdev
->setkeycode
= asus_setkeycode
;
1093 for (key
= asus_keymap
; key
->type
!= KE_END
; key
++) {
1094 switch (key
->type
) {
1096 set_bit(EV_KEY
, hotk
->inputdev
->evbit
);
1097 set_bit(key
->keycode
, hotk
->inputdev
->keybit
);
1101 result
= input_register_device(hotk
->inputdev
);
1103 printk(ASUS_INFO
"Unable to register input device\n");
1104 input_free_device(hotk
->inputdev
);
1109 static int asus_hotk_check(void)
1113 result
= acpi_bus_get_status(hotk
->device
);
1117 if (hotk
->device
->status
.present
) {
1118 result
= asus_hotk_get_info();
1120 printk(ASUS_ERR
"Hotkey device not present, aborting\n");
1127 static int asus_hotk_found
;
1129 static int asus_hotk_add(struct acpi_device
*device
)
1136 printk(ASUS_NOTICE
"Asus Laptop Support version %s\n",
1137 ASUS_LAPTOP_VERSION
);
1139 hotk
= kzalloc(sizeof(struct asus_hotk
), GFP_KERNEL
);
1143 hotk
->handle
= device
->handle
;
1144 strcpy(acpi_device_name(device
), ASUS_HOTK_DEVICE_NAME
);
1145 strcpy(acpi_device_class(device
), ASUS_HOTK_CLASS
);
1146 device
->driver_data
= hotk
;
1147 hotk
->device
= device
;
1149 result
= asus_hotk_check();
1155 asus_hotk_found
= 1;
1157 /* WLED and BLED are on by default */
1158 write_status(bt_switch_handle
, 1, BT_ON
);
1159 write_status(wl_switch_handle
, 1, WL_ON
);
1161 /* If the h/w switch is off, we need to check the real status */
1162 write_status(NULL
, read_status(BT_ON
), BT_ON
);
1163 write_status(NULL
, read_status(WL_ON
), WL_ON
);
1165 /* LCD Backlight is on by default */
1166 write_status(NULL
, 1, LCD_ON
);
1168 /* LED display is off by default */
1169 hotk
->ledd_status
= 0xFFF;
1171 /* Set initial values of light sensor and level */
1172 hotk
->light_switch
= 1; /* Default to light sensor disabled */
1173 hotk
->light_level
= 0; /* level 5 for sensor sensitivity */
1175 if (ls_switch_handle
)
1176 set_light_sens_switch(hotk
->light_switch
);
1178 if (ls_level_handle
)
1179 set_light_sens_level(hotk
->light_level
);
1181 /* GPS is on by default */
1182 write_status(NULL
, 1, GPS_ON
);
1193 static int asus_hotk_remove(struct acpi_device
*device
, int type
)
1195 if (!device
|| !acpi_driver_data(device
))
1204 static void asus_backlight_exit(void)
1206 if (asus_backlight_device
)
1207 backlight_device_unregister(asus_backlight_device
);
1210 #define ASUS_LED_UNREGISTER(object) \
1211 if (object##_led.dev) \
1212 led_classdev_unregister(&object##_led)
1214 static void asus_led_exit(void)
1216 destroy_workqueue(led_workqueue
);
1217 ASUS_LED_UNREGISTER(mled
);
1218 ASUS_LED_UNREGISTER(tled
);
1219 ASUS_LED_UNREGISTER(pled
);
1220 ASUS_LED_UNREGISTER(rled
);
1221 ASUS_LED_UNREGISTER(gled
);
1224 static void asus_input_exit(void)
1227 input_unregister_device(hotk
->inputdev
);
1230 static void __exit
asus_laptop_exit(void)
1232 asus_backlight_exit();
1236 acpi_bus_unregister_driver(&asus_hotk_driver
);
1237 sysfs_remove_group(&asuspf_device
->dev
.kobj
, &asuspf_attribute_group
);
1238 platform_device_unregister(asuspf_device
);
1239 platform_driver_unregister(&asuspf_driver
);
1242 static int asus_backlight_init(struct device
*dev
)
1244 struct backlight_device
*bd
;
1246 if (brightness_set_handle
&& lcd_switch_handle
) {
1247 bd
= backlight_device_register(ASUS_HOTK_FILE
, dev
,
1251 "Could not register asus backlight device\n");
1252 asus_backlight_device
= NULL
;
1256 asus_backlight_device
= bd
;
1258 bd
->props
.max_brightness
= 15;
1259 bd
->props
.brightness
= read_brightness(NULL
);
1260 bd
->props
.power
= FB_BLANK_UNBLANK
;
1261 backlight_update_status(bd
);
1266 static int asus_led_register(acpi_handle handle
,
1267 struct led_classdev
*ldev
, struct device
*dev
)
1272 return led_classdev_register(dev
, ldev
);
1275 #define ASUS_LED_REGISTER(object, device) \
1276 asus_led_register(object##_set_handle, &object##_led, device)
1278 static int asus_led_init(struct device
*dev
)
1282 rv
= ASUS_LED_REGISTER(mled
, dev
);
1286 rv
= ASUS_LED_REGISTER(tled
, dev
);
1290 rv
= ASUS_LED_REGISTER(rled
, dev
);
1294 rv
= ASUS_LED_REGISTER(pled
, dev
);
1298 rv
= ASUS_LED_REGISTER(gled
, dev
);
1302 led_workqueue
= create_singlethread_workqueue("led_workqueue");
1309 ASUS_LED_UNREGISTER(gled
);
1311 ASUS_LED_UNREGISTER(pled
);
1313 ASUS_LED_UNREGISTER(rled
);
1315 ASUS_LED_UNREGISTER(tled
);
1317 ASUS_LED_UNREGISTER(mled
);
1322 static int __init
asus_laptop_init(void)
1329 result
= acpi_bus_register_driver(&asus_hotk_driver
);
1334 * This is a bit of a kludge. We only want this module loaded
1335 * for ASUS systems, but there's currently no way to probe the
1336 * ACPI namespace for ASUS HIDs. So we just return failure if
1337 * we didn't find one, which will cause the module to be
1340 if (!asus_hotk_found
) {
1341 acpi_bus_unregister_driver(&asus_hotk_driver
);
1345 result
= asus_input_init();
1349 /* Register platform stuff */
1350 result
= platform_driver_register(&asuspf_driver
);
1352 goto fail_platform_driver
;
1354 asuspf_device
= platform_device_alloc(ASUS_HOTK_FILE
, -1);
1355 if (!asuspf_device
) {
1357 goto fail_platform_device1
;
1360 result
= platform_device_add(asuspf_device
);
1362 goto fail_platform_device2
;
1364 result
= sysfs_create_group(&asuspf_device
->dev
.kobj
,
1365 &asuspf_attribute_group
);
1369 result
= asus_led_init(&asuspf_device
->dev
);
1373 if (!acpi_video_backlight_support()) {
1374 result
= asus_backlight_init(&asuspf_device
->dev
);
1376 goto fail_backlight
;
1378 printk(ASUS_INFO
"Brightness ignored, must be controlled by "
1379 "ACPI video driver\n");
1387 sysfs_remove_group(&asuspf_device
->dev
.kobj
,
1388 &asuspf_attribute_group
);
1391 platform_device_del(asuspf_device
);
1393 fail_platform_device2
:
1394 platform_device_put(asuspf_device
);
1396 fail_platform_device1
:
1397 platform_driver_unregister(&asuspf_driver
);
1399 fail_platform_driver
:
1407 module_init(asus_laptop_init
);
1408 module_exit(asus_laptop_exit
);