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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
38 #include <linux/kernel.h>
39 #include <linux/module.h>
40 #include <linux/init.h>
41 #include <linux/types.h>
42 #include <linux/err.h>
43 #include <linux/proc_fs.h>
44 #include <linux/backlight.h>
46 #include <linux/leds.h>
47 #include <linux/platform_device.h>
48 #include <acpi/acpi_drivers.h>
49 #include <acpi/acpi_bus.h>
50 #include <asm/uaccess.h>
51 #include <linux/input.h>
53 #define ASUS_LAPTOP_VERSION "0.42"
55 #define ASUS_LAPTOP_NAME "Asus Laptop Support"
56 #define ASUS_LAPTOP_CLASS "hotkey"
57 #define ASUS_LAPTOP_DEVICE_NAME "Hotkey"
58 #define ASUS_LAPTOP_FILE KBUILD_MODNAME
59 #define ASUS_LAPTOP_PREFIX "\\_SB.ATKD."
61 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
62 MODULE_DESCRIPTION(ASUS_LAPTOP_NAME);
63 MODULE_LICENSE("GPL");
66 * WAPF defines the behavior of the Fn+Fx wlan key
67 * The significance of values is yet to be found, but
70 * 0x1 will allow to control the device with Fn+Fx key.
71 * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key
73 * So, if something doesn't work as you want, just try other values =)
76 module_param(wapf, uint, 0644);
77 MODULE_PARM_DESC(wapf, "WAPF value");
79 static uint wireless_status = 1;
80 static uint bluetooth_status = 1;
82 module_param(wireless_status, uint, 0644);
83 MODULE_PARM_DESC(wireless_status, "Set the wireless status on boot "
84 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
87 module_param(bluetooth_status, uint, 0644);
88 MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
89 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
93 * Some events we use, same for all Asus
95 #define ATKD_BR_UP 0x10
96 #define ATKD_BR_DOWN 0x20
97 #define ATKD_LCD_ON 0x33
98 #define ATKD_LCD_OFF 0x34
101 * Known bits returned by \_SB.ATKD.HWRS
104 #define BT_HWRS 0x100
107 * Flags for hotk status
108 * WL_ON and BT_ON are also used for wireless_status()
110 #define WL_ON 0x01 /* internal Wifi */
111 #define BT_ON 0x02 /* internal Bluetooth */
112 #define MLED_ON 0x04 /* mail LED */
113 #define TLED_ON 0x08 /* touchpad LED */
114 #define RLED_ON 0x10 /* Record LED */
115 #define PLED_ON 0x20 /* Phone LED */
116 #define GLED_ON 0x40 /* Gaming LED */
117 #define LCD_ON 0x80 /* LCD backlight */
118 #define GPS_ON 0x100 /* GPS */
119 #define KEY_ON 0x200 /* Keyboard backlight */
121 #define ASUS_HANDLE(object, paths...) \
122 static acpi_handle object##_handle = NULL; \
123 static char *object##_paths[] = { paths }
126 ASUS_HANDLE(mled_set, ASUS_LAPTOP_PREFIX "MLED");
127 ASUS_HANDLE(tled_set, ASUS_LAPTOP_PREFIX "TLED");
128 ASUS_HANDLE(rled_set, ASUS_LAPTOP_PREFIX "RLED"); /* W1JC */
129 ASUS_HANDLE(pled_set, ASUS_LAPTOP_PREFIX "PLED"); /* A7J */
130 ASUS_HANDLE(gled_set, ASUS_LAPTOP_PREFIX "GLED"); /* G1, G2 (probably) */
133 ASUS_HANDLE(ledd_set, ASUS_LAPTOP_PREFIX "SLCM");
137 * WLED and BLED are not handled like other XLED, because in some dsdt
138 * they also control the WLAN/Bluetooth device.
140 ASUS_HANDLE(wl_switch, ASUS_LAPTOP_PREFIX "WLED");
141 ASUS_HANDLE(bt_switch, ASUS_LAPTOP_PREFIX "BLED");
142 ASUS_HANDLE(wireless_status, ASUS_LAPTOP_PREFIX "RSTS"); /* All new models */
145 ASUS_HANDLE(brightness_set, ASUS_LAPTOP_PREFIX "SPLV");
146 ASUS_HANDLE(brightness_get, ASUS_LAPTOP_PREFIX "GPLV");
149 ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */
150 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */
151 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */
152 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */
153 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */
154 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */
155 "\\_SB.PCI0.PX40.Q10", /* S1x */
156 "\\Q10"); /* A2x, L2D, L3D, M2E */
159 ASUS_HANDLE(display_set, ASUS_LAPTOP_PREFIX "SDSP");
160 ASUS_HANDLE(display_get,
161 /* A6B, A6K A6R A7D F3JM L4R M6R A3G M6A M6V VX-1 V6J V6V W3Z */
162 "\\_SB.PCI0.P0P1.VGA.GETD",
163 /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V S5A M5A z33A W1Jc W2V G1 */
164 "\\_SB.PCI0.P0P2.VGA.GETD",
166 "\\_SB.PCI0.P0P3.VGA.GETD",
168 "\\_SB.PCI0.P0PA.VGA.GETD",
170 "\\_SB.PCI0.PCI1.VGAC.NMAP",
172 "\\_SB.PCI0.VGA.GETD",
175 /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */
179 /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */
181 /* A3F A6F A3N A3L M6N W3N W6A */
184 ASUS_HANDLE(ls_switch, ASUS_LAPTOP_PREFIX "ALSC"); /* Z71A Z71V */
185 ASUS_HANDLE(ls_level, ASUS_LAPTOP_PREFIX "ALSL"); /* Z71A Z71V */
188 /* R2H use different handle for GPS on/off */
189 ASUS_HANDLE(gps_on, ASUS_LAPTOP_PREFIX "SDON"); /* R2H */
190 ASUS_HANDLE(gps_off, ASUS_LAPTOP_PREFIX "SDOF"); /* R2H */
191 ASUS_HANDLE(gps_status, ASUS_LAPTOP_PREFIX "GPST");
194 ASUS_HANDLE(kled_set, ASUS_LAPTOP_PREFIX "SLKB");
195 ASUS_HANDLE(kled_get, ASUS_LAPTOP_PREFIX "GLKB");
198 * Define a specific led structure to keep the main structure clean
200 #define ASUS_DEFINE_LED(object) \
202 struct work_struct object##_work; \
203 struct led_classdev object;
206 #define led_to_asus(led_cdev, led) \
207 container_of(container_of(led_cdev, struct asus_laptop_leds, \
209 struct asus_laptop, leds)
210 #define work_to_asus(work, led) \
211 container_of(container_of(work, struct asus_laptop_leds, \
213 struct asus_laptop, leds)
215 struct asus_laptop_leds {
216 ASUS_DEFINE_LED(mled)
217 ASUS_DEFINE_LED(tled)
218 ASUS_DEFINE_LED(rled)
219 ASUS_DEFINE_LED(pled)
220 ASUS_DEFINE_LED(gled)
221 ASUS_DEFINE_LED(kled)
222 struct workqueue_struct *workqueue;
226 * This is the main structure, we can use it to store anything interesting
227 * about the hotk device
230 char *name; /* laptop name */
232 struct acpi_table_header *dsdt_info;
233 struct platform_device *platform_device;
234 struct acpi_device *device; /* the device we are in */
235 struct backlight_device *backlight_device;
237 struct input_dev *inputdev;
238 struct key_entry *keymap;
240 struct asus_laptop_leds leds;
242 acpi_handle handle; /* the handle of the hotk device */
243 char status; /* status of the hotk, for LEDs, ... */
244 u32 ledd_status; /* status of the LED display */
245 u8 light_level; /* light sensor level */
246 u8 light_switch; /* light sensor switch value */
247 u16 event_count[128]; /* count for each event TODO make this better */
257 enum { KE_KEY, KE_END };
259 static const struct key_entry asus_keymap[] = {
260 {KE_KEY, 0x02, KEY_SCREENLOCK},
261 {KE_KEY, 0x05, KEY_WLAN},
262 {KE_KEY, 0x08, KEY_F13},
263 {KE_KEY, 0x17, KEY_ZOOM},
264 {KE_KEY, 0x1f, KEY_BATTERY},
265 {KE_KEY, 0x30, KEY_VOLUMEUP},
266 {KE_KEY, 0x31, KEY_VOLUMEDOWN},
267 {KE_KEY, 0x32, KEY_MUTE},
268 {KE_KEY, 0x33, KEY_SWITCHVIDEOMODE},
269 {KE_KEY, 0x34, KEY_SWITCHVIDEOMODE},
270 {KE_KEY, 0x40, KEY_PREVIOUSSONG},
271 {KE_KEY, 0x41, KEY_NEXTSONG},
272 {KE_KEY, 0x43, KEY_STOPCD},
273 {KE_KEY, 0x45, KEY_PLAYPAUSE},
274 {KE_KEY, 0x4c, KEY_MEDIA},
275 {KE_KEY, 0x50, KEY_EMAIL},
276 {KE_KEY, 0x51, KEY_WWW},
277 {KE_KEY, 0x55, KEY_CALC},
278 {KE_KEY, 0x5C, KEY_SCREENLOCK}, /* Screenlock */
279 {KE_KEY, 0x5D, KEY_WLAN},
280 {KE_KEY, 0x5E, KEY_WLAN},
281 {KE_KEY, 0x5F, KEY_WLAN},
282 {KE_KEY, 0x60, KEY_SWITCHVIDEOMODE},
283 {KE_KEY, 0x61, KEY_SWITCHVIDEOMODE},
284 {KE_KEY, 0x62, KEY_SWITCHVIDEOMODE},
285 {KE_KEY, 0x63, KEY_SWITCHVIDEOMODE},
286 {KE_KEY, 0x6B, KEY_F13}, /* Lock Touchpad */
287 {KE_KEY, 0x82, KEY_CAMERA},
288 {KE_KEY, 0x88, KEY_WLAN },
289 {KE_KEY, 0x8A, KEY_PROG1},
290 {KE_KEY, 0x95, KEY_MEDIA},
291 {KE_KEY, 0x99, KEY_PHONE},
292 {KE_KEY, 0xc4, KEY_KBDILLUMUP},
293 {KE_KEY, 0xc5, KEY_KBDILLUMDOWN},
298 * This function evaluates an ACPI method, given an int as parameter, the
299 * method is searched within the scope of the handle, can be NULL. The output
300 * of the method is written is output, which can also be NULL
302 * returns 0 if write is successful, -1 else.
304 static int write_acpi_int_ret(acpi_handle handle, const char *method, int val,
305 struct acpi_buffer *output)
307 struct acpi_object_list params; /* list of input parameters (an int) */
308 union acpi_object in_obj; /* the only param we use */
315 params.pointer = &in_obj;
316 in_obj.type = ACPI_TYPE_INTEGER;
317 in_obj.integer.value = val;
319 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
326 static int write_acpi_int(acpi_handle handle, const char *method, int val)
328 return write_acpi_int_ret(handle, method, val, NULL);
331 static int read_wireless_status(struct asus_laptop *asus, int mask)
333 unsigned long long status;
334 acpi_status rv = AE_OK;
336 if (!wireless_status_handle)
337 return (asus->status & mask) ? 1 : 0;
339 rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status);
340 if (ACPI_FAILURE(rv))
341 pr_warning("Error reading Wireless status\n");
343 return (status & mask) ? 1 : 0;
345 return (asus->status & mask) ? 1 : 0;
348 static int read_gps_status(struct asus_laptop *asus)
350 unsigned long long status;
351 acpi_status rv = AE_OK;
353 rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status);
354 if (ACPI_FAILURE(rv))
355 pr_warning("Error reading GPS status\n");
357 return status ? 1 : 0;
359 return (asus->status & GPS_ON) ? 1 : 0;
362 /* Generic LED functions */
363 static int read_status(struct asus_laptop *asus, int mask)
365 /* There is a special method for both wireless devices */
366 if (mask == BT_ON || mask == WL_ON)
367 return read_wireless_status(asus, mask);
368 else if (mask == GPS_ON)
369 return read_gps_status(asus);
371 return (asus->status & mask) ? 1 : 0;
374 static void write_status(struct asus_laptop *asus, acpi_handle handle,
377 asus->status = (out) ? (asus->status | mask) : (asus->status & ~mask);
384 out = (out & 0x1) + 1;
387 handle = (out) ? gps_on_handle : gps_off_handle;
395 if (write_acpi_int(handle, NULL, out))
396 pr_warning(" write failed %x\n", mask);
402 #define ASUS_LED(object, ledname, max) \
403 static void object##_led_set(struct led_classdev *led_cdev, \
404 enum led_brightness value); \
405 static enum led_brightness object##_led_get( \
406 struct led_classdev *led_cdev); \
407 static void object##_led_update(struct work_struct *ignored); \
408 static struct led_classdev object##_led = { \
409 .name = "asus::" ledname, \
410 .brightness_set = object##_led_set, \
411 .brightness_get = object##_led_get, \
412 .max_brightness = max \
415 ASUS_LED(mled, "mail", 1);
416 ASUS_LED(tled, "touchpad", 1);
417 ASUS_LED(rled, "record", 1);
418 ASUS_LED(pled, "phone", 1);
419 ASUS_LED(gled, "gaming", 1);
420 ASUS_LED(kled, "kbd_backlight", 3);
422 /* /sys/class/led handlers */
423 #define ASUS_LED_HANDLER(object, mask) \
424 static void object##_led_set(struct led_classdev *led_cdev, \
425 enum led_brightness value) \
427 struct asus_laptop *asus = \
428 led_to_asus(led_cdev, object); \
430 asus->leds.object##_wk = (value > 0) ? 1 : 0; \
431 queue_work(asus->leds.workqueue, \
432 &asus->leds.object##_work); \
434 static void object##_led_update(struct work_struct *work) \
436 struct asus_laptop *asus = work_to_asus(work, object); \
438 int value = asus->leds.object##_wk; \
439 write_status(asus, object##_set_handle, value, (mask)); \
441 static enum led_brightness object##_led_get( \
442 struct led_classdev *led_cdev) \
444 return led_cdev->brightness; \
447 ASUS_LED_HANDLER(mled, MLED_ON);
448 ASUS_LED_HANDLER(pled, PLED_ON);
449 ASUS_LED_HANDLER(rled, RLED_ON);
450 ASUS_LED_HANDLER(tled, TLED_ON);
451 ASUS_LED_HANDLER(gled, GLED_ON);
454 * Keyboard backlight (also a LED)
456 static int get_kled_lvl(void)
458 unsigned long long kblv;
459 struct acpi_object_list params;
460 union acpi_object in_obj;
464 params.pointer = &in_obj;
465 in_obj.type = ACPI_TYPE_INTEGER;
466 in_obj.integer.value = 2;
468 rv = acpi_evaluate_integer(kled_get_handle, NULL, ¶ms, &kblv);
469 if (ACPI_FAILURE(rv)) {
470 pr_warning("Error reading kled level\n");
476 static int set_kled_lvl(struct asus_laptop *asus, int kblv)
479 kblv = (1 << 7) | (kblv & 0x7F);
483 if (write_acpi_int(kled_set_handle, NULL, kblv)) {
484 pr_warning("Keyboard LED display write failed\n");
490 static void kled_led_set(struct led_classdev *led_cdev,
491 enum led_brightness value)
493 struct asus_laptop *asus = led_to_asus(led_cdev, kled);
495 asus->leds.kled_wk = value;
496 queue_work(asus->leds.workqueue, &asus->leds.kled_work);
499 static void kled_led_update(struct work_struct *work)
501 struct asus_laptop *asus = work_to_asus(work, kled);
503 set_kled_lvl(asus, asus->leds.kled_wk);
506 static enum led_brightness kled_led_get(struct led_classdev *led_cdev)
508 return get_kled_lvl();
511 #define ASUS_LED_UNREGISTER(object) \
512 if (object##_led.dev) \
513 led_classdev_unregister(&object##_led)
515 static void asus_led_exit(struct asus_laptop *asus)
517 ASUS_LED_UNREGISTER(mled);
518 ASUS_LED_UNREGISTER(tled);
519 ASUS_LED_UNREGISTER(pled);
520 ASUS_LED_UNREGISTER(rled);
521 ASUS_LED_UNREGISTER(gled);
522 ASUS_LED_UNREGISTER(kled);
523 if (asus->leds.workqueue) {
524 destroy_workqueue(asus->leds.workqueue);
525 asus->leds.workqueue = NULL;
529 /* Ugly macro, need to fix that later */
530 #define ASUS_LED_REGISTER(asus, object, _name, max) \
532 struct led_classdev *ldev = &asus->leds.object; \
533 if (!object##_set_handle) \
536 INIT_WORK(&asus->leds.object##_work, object##_led_update); \
537 ldev->name = "asus::" _name; \
538 ldev->brightness_set = object##_led_set; \
539 ldev->max_brightness = max; \
540 rv = led_classdev_register(&asus->platform_device->dev, ldev); \
545 static int asus_led_init(struct asus_laptop *asus)
550 * Functions that actually update the LED's are called from a
551 * workqueue. By doing this as separate work rather than when the LED
552 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
553 * potentially bad time, such as a timer interrupt.
555 asus->leds.workqueue = create_singlethread_workqueue("led_workqueue");
556 if (!asus->leds.workqueue)
559 ASUS_LED_REGISTER(asus, mled, "mail", 1);
560 ASUS_LED_REGISTER(asus, tled, "touchpad", 1);
561 ASUS_LED_REGISTER(asus, rled, "record", 1);
562 ASUS_LED_REGISTER(asus, pled, "phone", 1);
563 ASUS_LED_REGISTER(asus, gled, "gaming", 1);
564 if (kled_set_handle && kled_get_handle)
565 ASUS_LED_REGISTER(asus, kled, "kbd_backlight", 3);
575 static int get_lcd_state(struct asus_laptop *asus)
577 return read_status(asus, LCD_ON);
580 static int set_lcd_state(struct asus_laptop *asus, int value)
583 acpi_status status = 0;
587 if (lcd == get_lcd_state(asus))
590 if (lcd_switch_handle) {
591 status = acpi_evaluate_object(lcd_switch_handle,
594 if (ACPI_FAILURE(status))
595 pr_warning("Error switching LCD\n");
598 write_status(asus, NULL, lcd, LCD_ON);
602 static void lcd_blank(struct asus_laptop *asus, int blank)
604 struct backlight_device *bd = asus->backlight_device;
607 bd->props.power = blank;
608 backlight_update_status(bd);
612 static int read_brightness(struct backlight_device *bd)
614 unsigned long long value;
615 acpi_status rv = AE_OK;
617 rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value);
618 if (ACPI_FAILURE(rv))
619 pr_warning("Error reading brightness\n");
624 static int set_brightness(struct backlight_device *bd, int value)
626 if (write_acpi_int(brightness_set_handle, NULL, value)) {
627 pr_warning("Error changing brightness\n");
633 static int update_bl_status(struct backlight_device *bd)
635 struct asus_laptop *asus = bl_get_data(bd);
637 int value = bd->props.brightness;
639 rv = set_brightness(bd, value);
643 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0;
644 return set_lcd_state(asus, value);
647 static struct backlight_ops asusbl_ops = {
648 .get_brightness = read_brightness,
649 .update_status = update_bl_status,
652 static int asus_backlight_init(struct asus_laptop *asus)
654 struct backlight_device *bd;
655 struct device *dev = &asus->platform_device->dev;
657 if (brightness_set_handle && lcd_switch_handle) {
658 bd = backlight_device_register(ASUS_LAPTOP_FILE, dev,
661 pr_err("Could not register asus backlight device\n");
662 asus->backlight_device = NULL;
666 asus->backlight_device = bd;
668 bd->props.max_brightness = 15;
669 bd->props.brightness = read_brightness(NULL);
670 bd->props.power = FB_BLANK_UNBLANK;
671 backlight_update_status(bd);
676 static void asus_backlight_exit(struct asus_laptop *asus)
678 if (asus->backlight_device)
679 backlight_device_unregister(asus->backlight_device);
683 * Platform device handlers
687 * We write our info in page, we begin at offset off and cannot write more
688 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
689 * number of bytes written in page
691 static ssize_t show_infos(struct device *dev,
692 struct device_attribute *attr, char *page)
694 struct asus_laptop *asus = dev_get_drvdata(dev);
696 unsigned long long temp;
697 char buf[16]; /* enough for all info */
698 acpi_status rv = AE_OK;
701 * We use the easy way, we don't care of off and count, so we don't set eof
705 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
706 len += sprintf(page + len, "Model reference : %s\n", asus->name);
708 * The SFUN method probably allows the original driver to get the list
709 * of features supported by a given model. For now, 0x0100 or 0x0800
710 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
711 * The significance of others is yet to be found.
713 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
714 if (!ACPI_FAILURE(rv))
715 len += sprintf(page + len, "SFUN value : %#x\n",
718 * The HWRS method return informations about the hardware.
719 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
720 * The significance of others is yet to be found.
721 * If we don't find the method, we assume the device are present.
723 rv = acpi_evaluate_integer(asus->handle, "HRWS", NULL, &temp);
724 if (!ACPI_FAILURE(rv))
725 len += sprintf(page + len, "HRWS value : %#x\n",
728 * Another value for userspace: the ASYM method returns 0x02 for
729 * battery low and 0x04 for battery critical, its readings tend to be
730 * more accurate than those provided by _BST.
731 * Note: since not all the laptops provide this method, errors are
734 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
735 if (!ACPI_FAILURE(rv))
736 len += sprintf(page + len, "ASYM value : %#x\n",
738 if (asus->dsdt_info) {
739 snprintf(buf, 16, "%d", asus->dsdt_info->length);
740 len += sprintf(page + len, "DSDT length : %s\n", buf);
741 snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
742 len += sprintf(page + len, "DSDT checksum : %s\n", buf);
743 snprintf(buf, 16, "%d", asus->dsdt_info->revision);
744 len += sprintf(page + len, "DSDT revision : %s\n", buf);
745 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
746 len += sprintf(page + len, "OEM id : %s\n", buf);
747 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
748 len += sprintf(page + len, "OEM table id : %s\n", buf);
749 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
750 len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
751 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
752 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
753 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
754 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
760 static int parse_arg(const char *buf, unsigned long count, int *val)
766 if (sscanf(buf, "%i", val) != 1)
771 static ssize_t store_status(struct asus_laptop *asus,
772 const char *buf, size_t count,
773 acpi_handle handle, int mask)
778 rv = parse_arg(buf, count, &value);
782 write_status(asus, handle, out, mask);
790 static ssize_t show_ledd(struct device *dev,
791 struct device_attribute *attr, char *buf)
793 struct asus_laptop *asus = dev_get_drvdata(dev);
795 return sprintf(buf, "0x%08x\n", asus->ledd_status);
798 static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
799 const char *buf, size_t count)
801 struct asus_laptop *asus = dev_get_drvdata(dev);
804 rv = parse_arg(buf, count, &value);
806 if (write_acpi_int(ledd_set_handle, NULL, value))
807 pr_warning("LED display write failed\n");
809 asus->ledd_status = (u32) value;
817 static ssize_t show_wlan(struct device *dev,
818 struct device_attribute *attr, char *buf)
820 struct asus_laptop *asus = dev_get_drvdata(dev);
822 return sprintf(buf, "%d\n", read_status(asus, WL_ON));
825 static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
826 const char *buf, size_t count)
828 struct asus_laptop *asus = dev_get_drvdata(dev);
830 return store_status(asus, buf, count, wl_switch_handle, WL_ON);
836 static ssize_t show_bluetooth(struct device *dev,
837 struct device_attribute *attr, char *buf)
839 struct asus_laptop *asus = dev_get_drvdata(dev);
841 return sprintf(buf, "%d\n", read_status(asus, BT_ON));
844 static ssize_t store_bluetooth(struct device *dev,
845 struct device_attribute *attr, const char *buf,
848 struct asus_laptop *asus = dev_get_drvdata(dev);
850 return store_status(asus, buf, count, bt_switch_handle, BT_ON);
856 static void set_display(struct asus_laptop *asus, int value)
858 /* no sanity check needed for now */
859 if (write_acpi_int(display_set_handle, NULL, value))
860 pr_warning("Error setting display\n");
864 static int read_display(struct asus_laptop *asus)
866 unsigned long long value = 0;
867 acpi_status rv = AE_OK;
870 * In most of the case, we know how to set the display, but sometime
873 if (display_get_handle) {
874 rv = acpi_evaluate_integer(display_get_handle, NULL,
876 if (ACPI_FAILURE(rv))
877 pr_warning("Error reading display status\n");
880 value &= 0x0F; /* needed for some models, shouldn't hurt others */
886 * Now, *this* one could be more user-friendly, but so far, no-one has
887 * complained. The significance of bits is the same as in store_disp()
889 static ssize_t show_disp(struct device *dev,
890 struct device_attribute *attr, char *buf)
892 struct asus_laptop *asus = dev_get_drvdata(dev);
894 return sprintf(buf, "%d\n", read_display(asus));
898 * Experimental support for display switching. As of now: 1 should activate
899 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
900 * Any combination (bitwise) of these will suffice. I never actually tested 4
901 * displays hooked up simultaneously, so be warned. See the acpi4asus README
904 static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
905 const char *buf, size_t count)
907 struct asus_laptop *asus = dev_get_drvdata(dev);
910 rv = parse_arg(buf, count, &value);
912 set_display(asus, value);
919 static void set_light_sens_switch(struct asus_laptop *asus, int value)
921 if (write_acpi_int(ls_switch_handle, NULL, value))
922 pr_warning("Error setting light sensor switch\n");
923 asus->light_switch = value;
926 static ssize_t show_lssw(struct device *dev,
927 struct device_attribute *attr, char *buf)
929 struct asus_laptop *asus = dev_get_drvdata(dev);
931 return sprintf(buf, "%d\n", asus->light_switch);
934 static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
935 const char *buf, size_t count)
937 struct asus_laptop *asus = dev_get_drvdata(dev);
940 rv = parse_arg(buf, count, &value);
942 set_light_sens_switch(asus, value ? 1 : 0);
947 static void set_light_sens_level(struct asus_laptop *asus, int value)
949 if (write_acpi_int(ls_level_handle, NULL, value))
950 pr_warning("Error setting light sensor level\n");
951 asus->light_level = value;
954 static ssize_t show_lslvl(struct device *dev,
955 struct device_attribute *attr, char *buf)
957 struct asus_laptop *asus = dev_get_drvdata(dev);
959 return sprintf(buf, "%d\n", asus->light_level);
962 static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
963 const char *buf, size_t count)
965 struct asus_laptop *asus = dev_get_drvdata(dev);
968 rv = parse_arg(buf, count, &value);
970 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
971 /* 0 <= value <= 15 */
972 set_light_sens_level(asus, value);
981 static ssize_t show_gps(struct device *dev,
982 struct device_attribute *attr, char *buf)
984 struct asus_laptop *asus = dev_get_drvdata(dev);
986 return sprintf(buf, "%d\n", read_status(asus, GPS_ON));
989 static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
990 const char *buf, size_t count)
992 struct asus_laptop *asus = dev_get_drvdata(dev);
994 return store_status(asus, buf, count, NULL, GPS_ON);
998 * Input device (i.e. hotkeys)
1000 static struct key_entry *asus_get_entry_by_scancode(struct asus_laptop *asus,
1003 struct key_entry *key;
1005 for (key = asus->keymap; key->type != KE_END; key++)
1006 if (code == key->code)
1012 static struct key_entry *asus_get_entry_by_keycode(struct asus_laptop *asus,
1015 struct key_entry *key;
1017 for (key = asus->keymap; key->type != KE_END; key++)
1018 if (code == key->keycode && key->type == KE_KEY)
1024 static int asus_getkeycode(struct input_dev *dev, int scancode, int *keycode)
1026 struct asus_laptop *asus = input_get_drvdata(dev);
1027 struct key_entry *key = asus_get_entry_by_scancode(asus, scancode);
1029 if (key && key->type == KE_KEY) {
1030 *keycode = key->keycode;
1037 static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode)
1039 struct asus_laptop *asus = input_get_drvdata(dev);
1040 struct key_entry *key;
1043 if (keycode < 0 || keycode > KEY_MAX)
1046 key = asus_get_entry_by_scancode(asus, scancode);
1047 if (key && key->type == KE_KEY) {
1048 old_keycode = key->keycode;
1049 key->keycode = keycode;
1050 set_bit(keycode, dev->keybit);
1051 if (!asus_get_entry_by_keycode(asus, old_keycode))
1052 clear_bit(old_keycode, dev->keybit);
1059 static void asus_input_notify(struct asus_laptop *asus, int event)
1061 struct key_entry *key;
1063 key = asus_get_entry_by_scancode(asus, event);
1067 switch (key->type) {
1069 input_report_key(asus->inputdev, key->keycode, 1);
1070 input_sync(asus->inputdev);
1071 input_report_key(asus->inputdev, key->keycode, 0);
1072 input_sync(asus->inputdev);
1077 static int asus_input_init(struct asus_laptop *asus)
1079 const struct key_entry *key;
1082 asus->inputdev = input_allocate_device();
1083 if (!asus->inputdev) {
1084 pr_info("Unable to allocate input device\n");
1087 asus->inputdev->name = "Asus Laptop extra buttons";
1088 asus->inputdev->dev.parent = &asus->platform_device->dev;
1089 asus->inputdev->phys = ASUS_LAPTOP_FILE "/input0";
1090 asus->inputdev->id.bustype = BUS_HOST;
1091 asus->inputdev->getkeycode = asus_getkeycode;
1092 asus->inputdev->setkeycode = asus_setkeycode;
1093 input_set_drvdata(asus->inputdev, asus);
1095 asus->keymap = kmemdup(asus_keymap, sizeof(asus_keymap),
1097 for (key = asus->keymap; key->type != KE_END; key++) {
1098 switch (key->type) {
1100 set_bit(EV_KEY, asus->inputdev->evbit);
1101 set_bit(key->keycode, asus->inputdev->keybit);
1105 result = input_register_device(asus->inputdev);
1107 pr_info("Unable to register input device\n");
1108 input_free_device(asus->inputdev);
1113 static void asus_input_exit(struct asus_laptop *asus)
1116 input_unregister_device(asus->inputdev);
1122 static void asus_acpi_notify(struct acpi_device *device, u32 event)
1124 struct asus_laptop *asus = acpi_driver_data(device);
1128 * We need to tell the backlight device when the backlight power is
1131 if (event == ATKD_LCD_ON) {
1132 write_status(asus, NULL, 1, LCD_ON);
1133 lcd_blank(asus, FB_BLANK_UNBLANK);
1134 } else if (event == ATKD_LCD_OFF) {
1135 write_status(asus, NULL, 0, LCD_ON);
1136 lcd_blank(asus, FB_BLANK_POWERDOWN);
1139 /* TODO Find a better way to handle events count. */
1140 count = asus->event_count[event % 128]++;
1141 acpi_bus_generate_proc_event(asus->device, event, count);
1142 acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1143 dev_name(&asus->device->dev), event,
1146 asus_input_notify(asus, event);
1149 #define ASUS_CREATE_DEVICE_ATTR(_name) \
1150 struct device_attribute dev_attr_##_name = { \
1152 .name = __stringify(_name), \
1158 #define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \
1160 dev_attr_##_name.attr.mode = _mode; \
1161 dev_attr_##_name.show = _show; \
1162 dev_attr_##_name.store = _store; \
1165 static ASUS_CREATE_DEVICE_ATTR(infos);
1166 static ASUS_CREATE_DEVICE_ATTR(wlan);
1167 static ASUS_CREATE_DEVICE_ATTR(bluetooth);
1168 static ASUS_CREATE_DEVICE_ATTR(display);
1169 static ASUS_CREATE_DEVICE_ATTR(ledd);
1170 static ASUS_CREATE_DEVICE_ATTR(ls_switch);
1171 static ASUS_CREATE_DEVICE_ATTR(ls_level);
1172 static ASUS_CREATE_DEVICE_ATTR(gps);
1174 static struct attribute *asuspf_attributes[] = {
1175 &dev_attr_infos.attr,
1176 &dev_attr_wlan.attr,
1177 &dev_attr_bluetooth.attr,
1178 &dev_attr_display.attr,
1179 &dev_attr_ledd.attr,
1180 &dev_attr_ls_switch.attr,
1181 &dev_attr_ls_level.attr,
1186 static struct attribute_group platform_attribute_group = {
1187 .attrs = asuspf_attributes
1190 static int asus_platform_init(struct asus_laptop *asus)
1194 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
1195 if (!asus->platform_device)
1197 platform_set_drvdata(asus->platform_device, asus);
1199 result = platform_device_add(asus->platform_device);
1201 goto fail_platform_device;
1203 result = sysfs_create_group(&asus->platform_device->dev.kobj,
1204 &platform_attribute_group);
1210 platform_device_del(asus->platform_device);
1211 fail_platform_device:
1212 platform_device_put(asus->platform_device);
1216 static void asus_platform_exit(struct asus_laptop *asus)
1218 sysfs_remove_group(&asus->platform_device->dev.kobj,
1219 &platform_attribute_group);
1220 platform_device_unregister(asus->platform_device);
1223 static struct platform_driver platform_driver = {
1225 .name = ASUS_LAPTOP_FILE,
1226 .owner = THIS_MODULE,
1230 static void asus_laptop_add_fs(struct asus_laptop *asus)
1232 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL);
1234 if (wl_switch_handle)
1235 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan);
1237 if (bt_switch_handle)
1238 ASUS_SET_DEVICE_ATTR(bluetooth, 0644,
1239 show_bluetooth, store_bluetooth);
1241 if (display_set_handle && display_get_handle)
1242 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp);
1243 else if (display_set_handle)
1244 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp);
1246 if (ledd_set_handle)
1247 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);
1249 if (ls_switch_handle && ls_level_handle) {
1250 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);
1251 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);
1254 if (gps_status_handle && gps_on_handle && gps_off_handle)
1255 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps);
1258 static int asus_handle_init(char *name, acpi_handle * handle,
1259 char **paths, int num_paths)
1264 for (i = 0; i < num_paths; i++) {
1265 status = acpi_get_handle(NULL, paths[i], handle);
1266 if (ACPI_SUCCESS(status))
1274 #define ASUS_HANDLE_INIT(object) \
1275 asus_handle_init(#object, &object##_handle, object##_paths, \
1276 ARRAY_SIZE(object##_paths))
1279 * This function is used to initialize the context with right values. In this
1280 * method, we can make all the detection we want, and modify the asus_laptop
1283 static int asus_laptop_get_info(struct asus_laptop *asus)
1285 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1286 union acpi_object *model = NULL;
1287 unsigned long long bsts_result, hwrs_result;
1288 char *string = NULL;
1292 * Get DSDT headers early enough to allow for differentiating between
1293 * models, but late enough to allow acpi_bus_register_driver() to fail
1294 * before doing anything ACPI-specific. Should we encounter a machine,
1295 * which needs special handling (i.e. its hotkey device has a different
1296 * HID), this bit will be moved.
1298 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
1299 if (ACPI_FAILURE(status))
1300 pr_warning("Couldn't get the DSDT table header\n");
1302 /* We have to write 0 on init this far for all ASUS models */
1303 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
1304 pr_err("Hotkey initialization failed\n");
1308 /* This needs to be called for some laptops to init properly */
1310 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
1311 if (ACPI_FAILURE(status))
1312 pr_warning("Error calling BSTS\n");
1313 else if (bsts_result)
1314 pr_notice("BSTS called, 0x%02x returned\n",
1315 (uint) bsts_result);
1318 write_acpi_int(asus->handle, "CWAP", wapf);
1321 * Try to match the object returned by INIT to the specific model.
1322 * Handle every possible object (or the lack of thereof) the DSDT
1323 * writers might throw at us. When in trouble, we pass NULL to
1324 * asus_model_match() and try something completely different.
1326 if (buffer.pointer) {
1327 model = buffer.pointer;
1328 switch (model->type) {
1329 case ACPI_TYPE_STRING:
1330 string = model->string.pointer;
1332 case ACPI_TYPE_BUFFER:
1333 string = model->buffer.pointer;
1340 asus->name = kstrdup(string, GFP_KERNEL);
1345 pr_notice(" %s model detected\n", string);
1347 ASUS_HANDLE_INIT(mled_set);
1348 ASUS_HANDLE_INIT(tled_set);
1349 ASUS_HANDLE_INIT(rled_set);
1350 ASUS_HANDLE_INIT(pled_set);
1351 ASUS_HANDLE_INIT(gled_set);
1353 ASUS_HANDLE_INIT(ledd_set);
1355 ASUS_HANDLE_INIT(kled_set);
1356 ASUS_HANDLE_INIT(kled_get);
1359 * The HWRS method return informations about the hardware.
1360 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
1361 * The significance of others is yet to be found.
1362 * If we don't find the method, we assume the device are present.
1365 acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result);
1366 if (ACPI_FAILURE(status))
1367 hwrs_result = WL_HWRS | BT_HWRS;
1369 if (hwrs_result & WL_HWRS)
1370 ASUS_HANDLE_INIT(wl_switch);
1371 if (hwrs_result & BT_HWRS)
1372 ASUS_HANDLE_INIT(bt_switch);
1374 ASUS_HANDLE_INIT(wireless_status);
1376 ASUS_HANDLE_INIT(brightness_set);
1377 ASUS_HANDLE_INIT(brightness_get);
1379 ASUS_HANDLE_INIT(lcd_switch);
1381 ASUS_HANDLE_INIT(display_set);
1382 ASUS_HANDLE_INIT(display_get);
1385 * There is a lot of models with "ALSL", but a few get
1386 * a real light sens, so we need to check it.
1388 if (!ASUS_HANDLE_INIT(ls_switch))
1389 ASUS_HANDLE_INIT(ls_level);
1391 ASUS_HANDLE_INIT(gps_on);
1392 ASUS_HANDLE_INIT(gps_off);
1393 ASUS_HANDLE_INIT(gps_status);
1400 static bool asus_device_present;
1402 static int __devinit asus_acpi_init(struct asus_laptop *asus)
1406 result = acpi_bus_get_status(asus->device);
1409 if (!asus->device->status.present) {
1410 pr_err("Hotkey device not present, aborting\n");
1414 result = asus_laptop_get_info(asus);
1418 asus_laptop_add_fs(asus);
1420 /* WLED and BLED are on by default */
1421 if (bluetooth_status >= 0)
1422 write_status(asus, bt_switch_handle, !!bluetooth_status, BT_ON);
1423 if (wireless_status >= 0)
1424 write_status(asus, wl_switch_handle, !!wireless_status, WL_ON);
1426 /* If the h/w switch is off, we need to check the real status */
1427 write_status(asus, NULL, read_status(asus, BT_ON), BT_ON);
1428 write_status(asus, NULL, read_status(asus, WL_ON), WL_ON);
1430 /* LCD Backlight is on by default */
1431 write_status(asus, NULL, 1, LCD_ON);
1433 /* Keyboard Backlight is on by default */
1434 if (kled_set_handle)
1435 set_kled_lvl(asus, 1);
1437 /* LED display is off by default */
1438 asus->ledd_status = 0xFFF;
1440 /* Set initial values of light sensor and level */
1441 asus->light_switch = 0; /* Default to light sensor disabled */
1442 asus->light_level = 5; /* level 5 for sensor sensitivity */
1444 if (ls_switch_handle)
1445 set_light_sens_switch(asus, asus->light_switch);
1447 if (ls_level_handle)
1448 set_light_sens_level(asus, asus->light_level);
1450 /* GPS is on by default */
1451 write_status(asus, NULL, 1, GPS_ON);
1455 static int __devinit asus_acpi_add(struct acpi_device *device)
1457 struct asus_laptop *asus;
1460 pr_notice("Asus Laptop Support version %s\n",
1461 ASUS_LAPTOP_VERSION);
1462 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
1465 asus->handle = device->handle;
1466 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
1467 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
1468 device->driver_data = asus;
1469 asus->device = device;
1471 result = asus_acpi_init(asus);
1476 * Register the platform device first. It is used as a parent for the
1477 * sub-devices below.
1479 result = asus_platform_init(asus);
1483 if (!acpi_video_backlight_support()) {
1484 result = asus_backlight_init(asus);
1486 goto fail_backlight;
1488 pr_info("Backlight controlled by ACPI video driver\n");
1490 result = asus_input_init(asus);
1494 result = asus_led_init(asus);
1498 asus_device_present = true;
1502 asus_input_exit(asus);
1504 asus_backlight_exit(asus);
1506 asus_platform_exit(asus);
1514 static int asus_acpi_remove(struct acpi_device *device, int type)
1516 struct asus_laptop *asus = acpi_driver_data(device);
1518 asus_backlight_exit(asus);
1519 asus_led_exit(asus);
1520 asus_input_exit(asus);
1521 asus_platform_exit(asus);
1528 static const struct acpi_device_id asus_device_ids[] = {
1533 MODULE_DEVICE_TABLE(acpi, asus_device_ids);
1535 static struct acpi_driver asus_acpi_driver = {
1536 .name = ASUS_LAPTOP_NAME,
1537 .class = ASUS_LAPTOP_CLASS,
1538 .owner = THIS_MODULE,
1539 .ids = asus_device_ids,
1540 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1542 .add = asus_acpi_add,
1543 .remove = asus_acpi_remove,
1544 .notify = asus_acpi_notify,
1548 static int __init asus_laptop_init(void)
1552 result = platform_driver_register(&platform_driver);
1556 result = acpi_bus_register_driver(&asus_acpi_driver);
1558 goto fail_acpi_driver;
1559 if (!asus_device_present) {
1561 goto fail_no_device;
1566 acpi_bus_unregister_driver(&asus_acpi_driver);
1568 platform_driver_unregister(&platform_driver);
1572 static void __exit asus_laptop_exit(void)
1574 acpi_bus_unregister_driver(&asus_acpi_driver);
1575 platform_driver_unregister(&platform_driver);
1578 module_init(asus_laptop_init);
1579 module_exit(asus_laptop_exit);