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_RSTS 0x01 /* internal Wifi */
111 #define BT_RSTS 0x02 /* internal Bluetooth */
113 #define ASUS_HANDLE(object, paths...) \
114 static acpi_handle object##_handle = NULL; \
115 static char *object##_paths[] = { paths }
118 #define METHOD_MLED "MLED"
119 #define METHOD_TLED "TLED"
120 #define METHOD_RLED "RLED" /* W1JC */
121 #define METHOD_PLED "PLED" /* A7J */
122 #define METHOD_GLED "GLED" /* G1, G2 (probably) */
125 #define METHOD_LEDD "SLCM"
129 * WLED and BLED are not handled like other XLED, because in some dsdt
130 * they also control the WLAN/Bluetooth device.
132 #define METHOD_WLAN "WLED"
133 #define METHOD_BLUETOOTH "BLED"
134 #define METHOD_WL_STATUS "RSTS"
137 #define METHOD_BRIGHTNESS_SET "SPLV"
138 #define METHOD_BRIGHTNESS_GET "GPLV"
141 ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */
142 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */
143 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */
144 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */
145 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */
146 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */
147 "\\_SB.PCI0.PX40.Q10", /* S1x */
148 "\\Q10"); /* A2x, L2D, L3D, M2E */
151 #define METHOD_SWITCH_DISPLAY "SDSP"
152 ASUS_HANDLE(display_get,
153 /* A6B, A6K A6R A7D F3JM L4R M6R A3G M6A M6V VX-1 V6J V6V W3Z */
154 "\\_SB.PCI0.P0P1.VGA.GETD",
155 /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V S5A M5A z33A W1Jc W2V G1 */
156 "\\_SB.PCI0.P0P2.VGA.GETD",
158 "\\_SB.PCI0.P0P3.VGA.GETD",
160 "\\_SB.PCI0.P0PA.VGA.GETD",
162 "\\_SB.PCI0.PCI1.VGAC.NMAP",
164 "\\_SB.PCI0.VGA.GETD",
167 /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */
171 /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */
173 /* A3F A6F A3N A3L M6N W3N W6A */
176 #define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */
177 #define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */
180 /* R2H use different handle for GPS on/off */
181 #define METHOD_GPS_ON "SDON"
182 #define METHOD_GPS_OFF "SDOF"
183 #define METHOD_GPS_STATUS "GPST"
186 #define METHOD_KBD_LIGHT_SET "SLKB"
187 #define METHOD_KBD_LIGHT_GET "GLKB"
190 * Define a specific led structure to keep the main structure clean
192 #define ASUS_DEFINE_LED(object) \
194 struct work_struct object##_work; \
195 struct led_classdev object;
198 #define led_to_asus(led_cdev, led) \
199 container_of(container_of(led_cdev, struct asus_laptop_leds, \
201 struct asus_laptop, leds)
202 #define work_to_asus(work, led) \
203 container_of(container_of(work, struct asus_laptop_leds, \
205 struct asus_laptop, leds)
207 struct asus_laptop_leds {
208 ASUS_DEFINE_LED(mled)
209 ASUS_DEFINE_LED(tled)
210 ASUS_DEFINE_LED(rled)
211 ASUS_DEFINE_LED(pled)
212 ASUS_DEFINE_LED(gled)
213 ASUS_DEFINE_LED(kled)
214 struct workqueue_struct *workqueue;
218 * This is the main structure, we can use it to store anything interesting
219 * about the hotk device
222 char *name; /* laptop name */
224 struct acpi_table_header *dsdt_info;
225 struct platform_device *platform_device;
226 struct acpi_device *device; /* the device we are in */
227 struct backlight_device *backlight_device;
229 struct input_dev *inputdev;
230 struct key_entry *keymap;
232 struct asus_laptop_leds leds;
238 acpi_handle handle; /* the handle of the hotk device */
239 u32 ledd_status; /* status of the LED display */
240 u8 light_level; /* light sensor level */
241 u8 light_switch; /* light sensor switch value */
242 u16 event_count[128]; /* count for each event TODO make this better */
252 enum { KE_KEY, KE_END };
254 static const struct key_entry asus_keymap[] = {
255 {KE_KEY, 0x02, KEY_SCREENLOCK},
256 {KE_KEY, 0x05, KEY_WLAN},
257 {KE_KEY, 0x08, KEY_F13},
258 {KE_KEY, 0x17, KEY_ZOOM},
259 {KE_KEY, 0x1f, KEY_BATTERY},
260 {KE_KEY, 0x30, KEY_VOLUMEUP},
261 {KE_KEY, 0x31, KEY_VOLUMEDOWN},
262 {KE_KEY, 0x32, KEY_MUTE},
263 {KE_KEY, 0x33, KEY_SWITCHVIDEOMODE},
264 {KE_KEY, 0x34, KEY_SWITCHVIDEOMODE},
265 {KE_KEY, 0x40, KEY_PREVIOUSSONG},
266 {KE_KEY, 0x41, KEY_NEXTSONG},
267 {KE_KEY, 0x43, KEY_STOPCD},
268 {KE_KEY, 0x45, KEY_PLAYPAUSE},
269 {KE_KEY, 0x4c, KEY_MEDIA},
270 {KE_KEY, 0x50, KEY_EMAIL},
271 {KE_KEY, 0x51, KEY_WWW},
272 {KE_KEY, 0x55, KEY_CALC},
273 {KE_KEY, 0x5C, KEY_SCREENLOCK}, /* Screenlock */
274 {KE_KEY, 0x5D, KEY_WLAN},
275 {KE_KEY, 0x5E, KEY_WLAN},
276 {KE_KEY, 0x5F, KEY_WLAN},
277 {KE_KEY, 0x60, KEY_SWITCHVIDEOMODE},
278 {KE_KEY, 0x61, KEY_SWITCHVIDEOMODE},
279 {KE_KEY, 0x62, KEY_SWITCHVIDEOMODE},
280 {KE_KEY, 0x63, KEY_SWITCHVIDEOMODE},
281 {KE_KEY, 0x6B, KEY_F13}, /* Lock Touchpad */
282 {KE_KEY, 0x82, KEY_CAMERA},
283 {KE_KEY, 0x88, KEY_WLAN },
284 {KE_KEY, 0x8A, KEY_PROG1},
285 {KE_KEY, 0x95, KEY_MEDIA},
286 {KE_KEY, 0x99, KEY_PHONE},
287 {KE_KEY, 0xc4, KEY_KBDILLUMUP},
288 {KE_KEY, 0xc5, KEY_KBDILLUMDOWN},
293 * This function evaluates an ACPI method, given an int as parameter, the
294 * method is searched within the scope of the handle, can be NULL. The output
295 * of the method is written is output, which can also be NULL
297 * returns 0 if write is successful, -1 else.
299 static int write_acpi_int_ret(acpi_handle handle, const char *method, int val,
300 struct acpi_buffer *output)
302 struct acpi_object_list params; /* list of input parameters (an int) */
303 union acpi_object in_obj; /* the only param we use */
310 params.pointer = &in_obj;
311 in_obj.type = ACPI_TYPE_INTEGER;
312 in_obj.integer.value = val;
314 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
321 static int write_acpi_int(acpi_handle handle, const char *method, int val)
323 return write_acpi_int_ret(handle, method, val, NULL);
326 static int acpi_check_handle(acpi_handle handle, const char *method,
335 status = acpi_get_handle(handle, (char *)method,
340 status = acpi_get_handle(handle, (char *)method,
344 if (status != AE_OK) {
346 pr_warning("Error finding %s\n", method);
352 /* Generic LED function */
353 static int asus_led_set(struct asus_laptop *asus, char *method,
356 if (!strcmp(method, METHOD_MLED))
358 else if (!strcmp(method, METHOD_GLED))
363 return write_acpi_int(asus->handle, method, value);
369 #define ASUS_LED(object, ledname, max) \
370 static void object##_led_set(struct led_classdev *led_cdev, \
371 enum led_brightness value); \
372 static enum led_brightness object##_led_get( \
373 struct led_classdev *led_cdev); \
374 static void object##_led_update(struct work_struct *ignored); \
375 static struct led_classdev object##_led = { \
376 .name = "asus::" ledname, \
377 .brightness_set = object##_led_set, \
378 .brightness_get = object##_led_get, \
379 .max_brightness = max \
382 ASUS_LED(mled, "mail", 1);
383 ASUS_LED(tled, "touchpad", 1);
384 ASUS_LED(rled, "record", 1);
385 ASUS_LED(pled, "phone", 1);
386 ASUS_LED(gled, "gaming", 1);
387 ASUS_LED(kled, "kbd_backlight", 3);
389 /* /sys/class/led handlers */
390 #define ASUS_LED_HANDLER(object, method) \
391 static void object##_led_set(struct led_classdev *led_cdev, \
392 enum led_brightness value) \
394 struct asus_laptop *asus = \
395 led_to_asus(led_cdev, object); \
397 asus->leds.object##_wk = (value > 0) ? 1 : 0; \
398 queue_work(asus->leds.workqueue, \
399 &asus->leds.object##_work); \
401 static void object##_led_update(struct work_struct *work) \
403 struct asus_laptop *asus = work_to_asus(work, object); \
405 int value = asus->leds.object##_wk; \
406 asus_led_set(asus, method, value); \
408 static enum led_brightness object##_led_get( \
409 struct led_classdev *led_cdev) \
411 return led_cdev->brightness; \
414 ASUS_LED_HANDLER(mled, METHOD_MLED);
415 ASUS_LED_HANDLER(pled, METHOD_PLED);
416 ASUS_LED_HANDLER(rled, METHOD_RLED);
417 ASUS_LED_HANDLER(tled, METHOD_TLED);
418 ASUS_LED_HANDLER(gled, METHOD_GLED);
421 * Keyboard backlight (also a LED)
423 static int asus_kled_lvl(struct asus_laptop *asus)
425 unsigned long long kblv;
426 struct acpi_object_list params;
427 union acpi_object in_obj;
431 params.pointer = &in_obj;
432 in_obj.type = ACPI_TYPE_INTEGER;
433 in_obj.integer.value = 2;
435 rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET,
437 if (ACPI_FAILURE(rv)) {
438 pr_warning("Error reading kled level\n");
444 static int asus_kled_set(struct asus_laptop *asus, int kblv)
447 kblv = (1 << 7) | (kblv & 0x7F);
451 if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) {
452 pr_warning("Keyboard LED display write failed\n");
458 static void kled_led_set(struct led_classdev *led_cdev,
459 enum led_brightness value)
461 struct asus_laptop *asus = led_to_asus(led_cdev, kled);
463 asus->leds.kled_wk = value;
464 queue_work(asus->leds.workqueue, &asus->leds.kled_work);
467 static void kled_led_update(struct work_struct *work)
469 struct asus_laptop *asus = work_to_asus(work, kled);
471 asus_kled_set(asus, asus->leds.kled_wk);
474 static enum led_brightness kled_led_get(struct led_classdev *led_cdev)
476 struct asus_laptop *asus = led_to_asus(led_cdev, kled);
478 return asus_kled_lvl(asus);
481 #define ASUS_LED_UNREGISTER(object) \
482 if (object##_led.dev) \
483 led_classdev_unregister(&object##_led)
485 static void asus_led_exit(struct asus_laptop *asus)
487 ASUS_LED_UNREGISTER(mled);
488 ASUS_LED_UNREGISTER(tled);
489 ASUS_LED_UNREGISTER(pled);
490 ASUS_LED_UNREGISTER(rled);
491 ASUS_LED_UNREGISTER(gled);
492 ASUS_LED_UNREGISTER(kled);
493 if (asus->leds.workqueue) {
494 destroy_workqueue(asus->leds.workqueue);
495 asus->leds.workqueue = NULL;
499 /* Ugly macro, need to fix that later */
500 #define ASUS_LED_REGISTER(asus, object, _name, max, method) \
502 struct led_classdev *ldev = &asus->leds.object; \
504 if (method && acpi_check_handle(asus->handle, method, NULL)) \
507 INIT_WORK(&asus->leds.object##_work, object##_led_update); \
508 ldev->name = "asus::" _name; \
509 ldev->brightness_set = object##_led_set; \
510 ldev->max_brightness = max; \
511 rv = led_classdev_register(&asus->platform_device->dev, ldev); \
516 static int asus_led_init(struct asus_laptop *asus)
521 * Functions that actually update the LED's are called from a
522 * workqueue. By doing this as separate work rather than when the LED
523 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
524 * potentially bad time, such as a timer interrupt.
526 asus->leds.workqueue = create_singlethread_workqueue("led_workqueue");
527 if (!asus->leds.workqueue)
530 ASUS_LED_REGISTER(asus, mled, "mail", 1, METHOD_MLED);
531 ASUS_LED_REGISTER(asus, tled, "touchpad", 1, METHOD_TLED);
532 ASUS_LED_REGISTER(asus, rled, "record", 1, METHOD_RLED);
533 ASUS_LED_REGISTER(asus, pled, "phone", 1, METHOD_PLED);
534 ASUS_LED_REGISTER(asus, gled, "gaming", 1, METHOD_GLED);
535 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) &&
536 !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL))
537 ASUS_LED_REGISTER(asus, kled, "kbd_backlight", 3, NULL);
547 static int asus_lcd_status(struct asus_laptop *asus)
549 return asus->lcd_state;
552 static int asus_lcd_set(struct asus_laptop *asus, int value)
555 acpi_status status = 0;
559 if (lcd == asus_lcd_status(asus))
562 if (!lcd_switch_handle)
565 status = acpi_evaluate_object(lcd_switch_handle,
568 if (ACPI_FAILURE(status)) {
569 pr_warning("Error switching LCD\n");
573 asus->lcd_state = lcd;
577 static void lcd_blank(struct asus_laptop *asus, int blank)
579 struct backlight_device *bd = asus->backlight_device;
581 asus->lcd_state = (blank == FB_BLANK_UNBLANK);
584 bd->props.power = blank;
585 backlight_update_status(bd);
589 static int asus_read_brightness(struct backlight_device *bd)
591 struct asus_laptop *asus = bl_get_data(bd);
592 unsigned long long value;
593 acpi_status rv = AE_OK;
595 rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET,
597 if (ACPI_FAILURE(rv))
598 pr_warning("Error reading brightness\n");
603 static int asus_set_brightness(struct backlight_device *bd, int value)
605 struct asus_laptop *asus = bl_get_data(bd);
607 if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) {
608 pr_warning("Error changing brightness\n");
614 static int update_bl_status(struct backlight_device *bd)
616 struct asus_laptop *asus = bl_get_data(bd);
618 int value = bd->props.brightness;
620 rv = asus_set_brightness(bd, value);
624 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0;
625 return asus_lcd_set(asus, value);
628 static struct backlight_ops asusbl_ops = {
629 .get_brightness = asus_read_brightness,
630 .update_status = update_bl_status,
633 static int asus_backlight_init(struct asus_laptop *asus)
635 struct backlight_device *bd;
636 struct device *dev = &asus->platform_device->dev;
638 if (!acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) &&
639 !acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL) &&
641 bd = backlight_device_register(ASUS_LAPTOP_FILE, dev,
644 pr_err("Could not register asus backlight device\n");
645 asus->backlight_device = NULL;
649 asus->backlight_device = bd;
651 bd->props.max_brightness = 15;
652 bd->props.power = FB_BLANK_UNBLANK;
653 bd->props.brightness = asus_read_brightness(bd);
654 backlight_update_status(bd);
659 static void asus_backlight_exit(struct asus_laptop *asus)
661 if (asus->backlight_device)
662 backlight_device_unregister(asus->backlight_device);
666 * Platform device handlers
670 * We write our info in page, we begin at offset off and cannot write more
671 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
672 * number of bytes written in page
674 static ssize_t show_infos(struct device *dev,
675 struct device_attribute *attr, char *page)
677 struct asus_laptop *asus = dev_get_drvdata(dev);
679 unsigned long long temp;
680 char buf[16]; /* enough for all info */
681 acpi_status rv = AE_OK;
684 * We use the easy way, we don't care of off and count, so we don't set eof
688 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
689 len += sprintf(page + len, "Model reference : %s\n", asus->name);
691 * The SFUN method probably allows the original driver to get the list
692 * of features supported by a given model. For now, 0x0100 or 0x0800
693 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
694 * The significance of others is yet to be found.
696 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
697 if (!ACPI_FAILURE(rv))
698 len += sprintf(page + len, "SFUN value : %#x\n",
701 * The HWRS method return informations about the hardware.
702 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
703 * The significance of others is yet to be found.
704 * If we don't find the method, we assume the device are present.
706 rv = acpi_evaluate_integer(asus->handle, "HRWS", NULL, &temp);
707 if (!ACPI_FAILURE(rv))
708 len += sprintf(page + len, "HRWS value : %#x\n",
711 * Another value for userspace: the ASYM method returns 0x02 for
712 * battery low and 0x04 for battery critical, its readings tend to be
713 * more accurate than those provided by _BST.
714 * Note: since not all the laptops provide this method, errors are
717 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
718 if (!ACPI_FAILURE(rv))
719 len += sprintf(page + len, "ASYM value : %#x\n",
721 if (asus->dsdt_info) {
722 snprintf(buf, 16, "%d", asus->dsdt_info->length);
723 len += sprintf(page + len, "DSDT length : %s\n", buf);
724 snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
725 len += sprintf(page + len, "DSDT checksum : %s\n", buf);
726 snprintf(buf, 16, "%d", asus->dsdt_info->revision);
727 len += sprintf(page + len, "DSDT revision : %s\n", buf);
728 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
729 len += sprintf(page + len, "OEM id : %s\n", buf);
730 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
731 len += sprintf(page + len, "OEM table id : %s\n", buf);
732 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
733 len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
734 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
735 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
736 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
737 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
743 static int parse_arg(const char *buf, unsigned long count, int *val)
749 if (sscanf(buf, "%i", val) != 1)
754 static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
755 const char *buf, size_t count,
761 rv = parse_arg(buf, count, &value);
765 if (write_acpi_int(asus->handle, method, value))
773 static ssize_t show_ledd(struct device *dev,
774 struct device_attribute *attr, char *buf)
776 struct asus_laptop *asus = dev_get_drvdata(dev);
778 return sprintf(buf, "0x%08x\n", asus->ledd_status);
781 static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
782 const char *buf, size_t count)
784 struct asus_laptop *asus = dev_get_drvdata(dev);
787 rv = parse_arg(buf, count, &value);
789 if (write_acpi_int(asus->handle, METHOD_LEDD, value))
790 pr_warning("LED display write failed\n");
792 asus->ledd_status = (u32) value;
800 static int asus_wireless_status(struct asus_laptop *asus, int mask)
802 unsigned long long status;
803 acpi_status rv = AE_OK;
805 if (!asus->have_rsts)
806 return (asus->wireless_status & mask) ? 1 : 0;
808 rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
810 if (ACPI_FAILURE(rv)) {
811 pr_warning("Error reading Wireless status\n");
814 return !!(status & mask);
820 static int asus_wlan_set(struct asus_laptop *asus, int status)
822 if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
823 pr_warning("Error setting wlan status to %d", status);
829 static ssize_t show_wlan(struct device *dev,
830 struct device_attribute *attr, char *buf)
832 struct asus_laptop *asus = dev_get_drvdata(dev);
834 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
837 static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
838 const char *buf, size_t count)
840 struct asus_laptop *asus = dev_get_drvdata(dev);
842 return sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
848 static int asus_bluetooth_set(struct asus_laptop *asus, int status)
850 if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
851 pr_warning("Error setting bluetooth status to %d", status);
857 static ssize_t show_bluetooth(struct device *dev,
858 struct device_attribute *attr, char *buf)
860 struct asus_laptop *asus = dev_get_drvdata(dev);
862 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
865 static ssize_t store_bluetooth(struct device *dev,
866 struct device_attribute *attr, const char *buf,
869 struct asus_laptop *asus = dev_get_drvdata(dev);
871 return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
877 static void asus_set_display(struct asus_laptop *asus, int value)
879 /* no sanity check needed for now */
880 if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
881 pr_warning("Error setting display\n");
885 static int read_display(struct asus_laptop *asus)
887 unsigned long long value = 0;
888 acpi_status rv = AE_OK;
891 * In most of the case, we know how to set the display, but sometime
894 if (display_get_handle) {
895 rv = acpi_evaluate_integer(display_get_handle, NULL,
897 if (ACPI_FAILURE(rv))
898 pr_warning("Error reading display status\n");
901 value &= 0x0F; /* needed for some models, shouldn't hurt others */
907 * Now, *this* one could be more user-friendly, but so far, no-one has
908 * complained. The significance of bits is the same as in store_disp()
910 static ssize_t show_disp(struct device *dev,
911 struct device_attribute *attr, char *buf)
913 struct asus_laptop *asus = dev_get_drvdata(dev);
915 return sprintf(buf, "%d\n", read_display(asus));
919 * Experimental support for display switching. As of now: 1 should activate
920 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
921 * Any combination (bitwise) of these will suffice. I never actually tested 4
922 * displays hooked up simultaneously, so be warned. See the acpi4asus README
925 static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
926 const char *buf, size_t count)
928 struct asus_laptop *asus = dev_get_drvdata(dev);
931 rv = parse_arg(buf, count, &value);
933 asus_set_display(asus, value);
940 static void asus_als_switch(struct asus_laptop *asus, int value)
942 if (write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value))
943 pr_warning("Error setting light sensor switch\n");
944 asus->light_switch = value;
947 static ssize_t show_lssw(struct device *dev,
948 struct device_attribute *attr, char *buf)
950 struct asus_laptop *asus = dev_get_drvdata(dev);
952 return sprintf(buf, "%d\n", asus->light_switch);
955 static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
956 const char *buf, size_t count)
958 struct asus_laptop *asus = dev_get_drvdata(dev);
961 rv = parse_arg(buf, count, &value);
963 asus_als_switch(asus, value ? 1 : 0);
968 static void asus_als_level(struct asus_laptop *asus, int value)
970 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value))
971 pr_warning("Error setting light sensor level\n");
972 asus->light_level = value;
975 static ssize_t show_lslvl(struct device *dev,
976 struct device_attribute *attr, char *buf)
978 struct asus_laptop *asus = dev_get_drvdata(dev);
980 return sprintf(buf, "%d\n", asus->light_level);
983 static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
984 const char *buf, size_t count)
986 struct asus_laptop *asus = dev_get_drvdata(dev);
989 rv = parse_arg(buf, count, &value);
991 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
992 /* 0 <= value <= 15 */
993 asus_als_level(asus, value);
1003 static int asus_gps_status(struct asus_laptop *asus)
1005 unsigned long long status;
1006 acpi_status rv = AE_OK;
1008 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
1010 if (ACPI_FAILURE(rv)) {
1011 pr_warning("Error reading GPS status\n");
1017 static int asus_gps_switch(struct asus_laptop *asus, int status)
1019 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
1021 if (write_acpi_int(asus->handle, meth, 0x02))
1026 static ssize_t show_gps(struct device *dev,
1027 struct device_attribute *attr, char *buf)
1029 struct asus_laptop *asus = dev_get_drvdata(dev);
1031 return sprintf(buf, "%d\n", asus_gps_status(asus));
1034 static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
1035 const char *buf, size_t count)
1037 struct asus_laptop *asus = dev_get_drvdata(dev);
1041 rv = parse_arg(buf, count, &value);
1044 ret = asus_gps_switch(asus, !!value);
1051 * Input device (i.e. hotkeys)
1053 static struct key_entry *asus_get_entry_by_scancode(struct asus_laptop *asus,
1056 struct key_entry *key;
1058 for (key = asus->keymap; key->type != KE_END; key++)
1059 if (code == key->code)
1065 static struct key_entry *asus_get_entry_by_keycode(struct asus_laptop *asus,
1068 struct key_entry *key;
1070 for (key = asus->keymap; key->type != KE_END; key++)
1071 if (code == key->keycode && key->type == KE_KEY)
1077 static int asus_getkeycode(struct input_dev *dev, int scancode, int *keycode)
1079 struct asus_laptop *asus = input_get_drvdata(dev);
1080 struct key_entry *key = asus_get_entry_by_scancode(asus, scancode);
1082 if (key && key->type == KE_KEY) {
1083 *keycode = key->keycode;
1090 static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode)
1092 struct asus_laptop *asus = input_get_drvdata(dev);
1093 struct key_entry *key;
1096 if (keycode < 0 || keycode > KEY_MAX)
1099 key = asus_get_entry_by_scancode(asus, scancode);
1100 if (key && key->type == KE_KEY) {
1101 old_keycode = key->keycode;
1102 key->keycode = keycode;
1103 set_bit(keycode, dev->keybit);
1104 if (!asus_get_entry_by_keycode(asus, old_keycode))
1105 clear_bit(old_keycode, dev->keybit);
1112 static void asus_input_notify(struct asus_laptop *asus, int event)
1114 struct key_entry *key;
1116 key = asus_get_entry_by_scancode(asus, event);
1120 switch (key->type) {
1122 input_report_key(asus->inputdev, key->keycode, 1);
1123 input_sync(asus->inputdev);
1124 input_report_key(asus->inputdev, key->keycode, 0);
1125 input_sync(asus->inputdev);
1130 static int asus_input_init(struct asus_laptop *asus)
1132 const struct key_entry *key;
1135 asus->inputdev = input_allocate_device();
1136 if (!asus->inputdev) {
1137 pr_info("Unable to allocate input device\n");
1140 asus->inputdev->name = "Asus Laptop extra buttons";
1141 asus->inputdev->dev.parent = &asus->platform_device->dev;
1142 asus->inputdev->phys = ASUS_LAPTOP_FILE "/input0";
1143 asus->inputdev->id.bustype = BUS_HOST;
1144 asus->inputdev->getkeycode = asus_getkeycode;
1145 asus->inputdev->setkeycode = asus_setkeycode;
1146 input_set_drvdata(asus->inputdev, asus);
1148 asus->keymap = kmemdup(asus_keymap, sizeof(asus_keymap),
1150 for (key = asus->keymap; key->type != KE_END; key++) {
1151 switch (key->type) {
1153 set_bit(EV_KEY, asus->inputdev->evbit);
1154 set_bit(key->keycode, asus->inputdev->keybit);
1158 result = input_register_device(asus->inputdev);
1160 pr_info("Unable to register input device\n");
1161 input_free_device(asus->inputdev);
1166 static void asus_input_exit(struct asus_laptop *asus)
1169 input_unregister_device(asus->inputdev);
1175 static void asus_acpi_notify(struct acpi_device *device, u32 event)
1177 struct asus_laptop *asus = acpi_driver_data(device);
1181 * We need to tell the backlight device when the backlight power is
1184 if (event == ATKD_LCD_ON)
1185 lcd_blank(asus, FB_BLANK_UNBLANK);
1186 else if (event == ATKD_LCD_OFF)
1187 lcd_blank(asus, FB_BLANK_POWERDOWN);
1189 /* TODO Find a better way to handle events count. */
1190 count = asus->event_count[event % 128]++;
1191 acpi_bus_generate_proc_event(asus->device, event, count);
1192 acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1193 dev_name(&asus->device->dev), event,
1196 asus_input_notify(asus, event);
1199 #define ASUS_CREATE_DEVICE_ATTR(_name) \
1200 struct device_attribute dev_attr_##_name = { \
1202 .name = __stringify(_name), \
1208 #define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \
1210 dev_attr_##_name.attr.mode = _mode; \
1211 dev_attr_##_name.show = _show; \
1212 dev_attr_##_name.store = _store; \
1215 static ASUS_CREATE_DEVICE_ATTR(infos);
1216 static ASUS_CREATE_DEVICE_ATTR(wlan);
1217 static ASUS_CREATE_DEVICE_ATTR(bluetooth);
1218 static ASUS_CREATE_DEVICE_ATTR(display);
1219 static ASUS_CREATE_DEVICE_ATTR(ledd);
1220 static ASUS_CREATE_DEVICE_ATTR(ls_switch);
1221 static ASUS_CREATE_DEVICE_ATTR(ls_level);
1222 static ASUS_CREATE_DEVICE_ATTR(gps);
1224 static struct attribute *asuspf_attributes[] = {
1225 &dev_attr_infos.attr,
1226 &dev_attr_wlan.attr,
1227 &dev_attr_bluetooth.attr,
1228 &dev_attr_display.attr,
1229 &dev_attr_ledd.attr,
1230 &dev_attr_ls_switch.attr,
1231 &dev_attr_ls_level.attr,
1236 static struct attribute_group platform_attribute_group = {
1237 .attrs = asuspf_attributes
1240 static int asus_platform_init(struct asus_laptop *asus)
1244 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
1245 if (!asus->platform_device)
1247 platform_set_drvdata(asus->platform_device, asus);
1249 result = platform_device_add(asus->platform_device);
1251 goto fail_platform_device;
1253 result = sysfs_create_group(&asus->platform_device->dev.kobj,
1254 &platform_attribute_group);
1260 platform_device_del(asus->platform_device);
1261 fail_platform_device:
1262 platform_device_put(asus->platform_device);
1266 static void asus_platform_exit(struct asus_laptop *asus)
1268 sysfs_remove_group(&asus->platform_device->dev.kobj,
1269 &platform_attribute_group);
1270 platform_device_unregister(asus->platform_device);
1273 static struct platform_driver platform_driver = {
1275 .name = ASUS_LAPTOP_FILE,
1276 .owner = THIS_MODULE,
1280 static void asus_laptop_add_fs(struct asus_laptop *asus)
1282 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL);
1284 if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL))
1285 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan);
1287 if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL))
1288 ASUS_SET_DEVICE_ATTR(bluetooth, 0644,
1289 show_bluetooth, store_bluetooth);
1291 if (!acpi_check_handle(asus->handle, METHOD_SWITCH_DISPLAY, NULL)) {
1292 if (display_get_handle)
1293 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp,
1296 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp);
1299 if (!acpi_check_handle(asus->handle, METHOD_LEDD, NULL))
1300 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);
1302 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
1303 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
1304 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);
1305 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);
1308 if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
1309 !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
1310 !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1311 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps);
1314 static int asus_handle_init(char *name, acpi_handle * handle,
1315 char **paths, int num_paths)
1320 for (i = 0; i < num_paths; i++) {
1321 status = acpi_get_handle(NULL, paths[i], handle);
1322 if (ACPI_SUCCESS(status))
1330 #define ASUS_HANDLE_INIT(object) \
1331 asus_handle_init(#object, &object##_handle, object##_paths, \
1332 ARRAY_SIZE(object##_paths))
1335 * This function is used to initialize the context with right values. In this
1336 * method, we can make all the detection we want, and modify the asus_laptop
1339 static int asus_laptop_get_info(struct asus_laptop *asus)
1341 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1342 union acpi_object *model = NULL;
1343 unsigned long long bsts_result, hwrs_result;
1344 char *string = NULL;
1348 * Get DSDT headers early enough to allow for differentiating between
1349 * models, but late enough to allow acpi_bus_register_driver() to fail
1350 * before doing anything ACPI-specific. Should we encounter a machine,
1351 * which needs special handling (i.e. its hotkey device has a different
1352 * HID), this bit will be moved.
1354 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
1355 if (ACPI_FAILURE(status))
1356 pr_warning("Couldn't get the DSDT table header\n");
1358 /* We have to write 0 on init this far for all ASUS models */
1359 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
1360 pr_err("Hotkey initialization failed\n");
1364 /* This needs to be called for some laptops to init properly */
1366 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
1367 if (ACPI_FAILURE(status))
1368 pr_warning("Error calling BSTS\n");
1369 else if (bsts_result)
1370 pr_notice("BSTS called, 0x%02x returned\n",
1371 (uint) bsts_result);
1374 if (write_acpi_int(asus->handle, "CWAP", wapf))
1375 pr_err("Error calling CWAP(%d)\n", wapf);
1377 * Try to match the object returned by INIT to the specific model.
1378 * Handle every possible object (or the lack of thereof) the DSDT
1379 * writers might throw at us. When in trouble, we pass NULL to
1380 * asus_model_match() and try something completely different.
1382 if (buffer.pointer) {
1383 model = buffer.pointer;
1384 switch (model->type) {
1385 case ACPI_TYPE_STRING:
1386 string = model->string.pointer;
1388 case ACPI_TYPE_BUFFER:
1389 string = model->buffer.pointer;
1396 asus->name = kstrdup(string, GFP_KERNEL);
1401 pr_notice(" %s model detected\n", string);
1404 * The HWRS method return informations about the hardware.
1405 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
1406 * The significance of others is yet to be found.
1409 acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result);
1410 if (!ACPI_FAILURE(status))
1411 pr_notice(" HRWS returned %x", (int)hwrs_result);
1413 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL))
1414 asus->have_rsts = true;
1416 /* Scheduled for removal */
1417 ASUS_HANDLE_INIT(lcd_switch);
1418 ASUS_HANDLE_INIT(display_get);
1425 static bool asus_device_present;
1427 static int __devinit asus_acpi_init(struct asus_laptop *asus)
1431 result = acpi_bus_get_status(asus->device);
1434 if (!asus->device->status.present) {
1435 pr_err("Hotkey device not present, aborting\n");
1439 result = asus_laptop_get_info(asus);
1443 asus_laptop_add_fs(asus);
1445 /* WLED and BLED are on by default */
1446 if (bluetooth_status >= 0)
1447 asus_bluetooth_set(asus, !!bluetooth_status);
1449 if (wireless_status >= 0)
1450 asus_wlan_set(asus, !!wireless_status);
1452 /* Keyboard Backlight is on by default */
1453 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL))
1454 asus_kled_set(asus, 1);
1456 /* LED display is off by default */
1457 asus->ledd_status = 0xFFF;
1459 /* Set initial values of light sensor and level */
1460 asus->light_switch = 0; /* Default to light sensor disabled */
1461 asus->light_level = 5; /* level 5 for sensor sensitivity */
1463 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
1464 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
1465 asus_als_switch(asus, asus->light_switch);
1466 asus_als_level(asus, asus->light_level);
1469 /* GPS is on by default */
1470 if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
1471 !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
1472 !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1473 asus_gps_switch(asus, 1);
1477 static int __devinit asus_acpi_add(struct acpi_device *device)
1479 struct asus_laptop *asus;
1482 pr_notice("Asus Laptop Support version %s\n",
1483 ASUS_LAPTOP_VERSION);
1484 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
1487 asus->handle = device->handle;
1488 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
1489 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
1490 device->driver_data = asus;
1491 asus->device = device;
1493 result = asus_acpi_init(asus);
1498 * Register the platform device first. It is used as a parent for the
1499 * sub-devices below.
1501 result = asus_platform_init(asus);
1505 if (!acpi_video_backlight_support()) {
1506 result = asus_backlight_init(asus);
1508 goto fail_backlight;
1510 pr_info("Backlight controlled by ACPI video driver\n");
1512 result = asus_input_init(asus);
1516 result = asus_led_init(asus);
1520 asus_device_present = true;
1524 asus_input_exit(asus);
1526 asus_backlight_exit(asus);
1528 asus_platform_exit(asus);
1536 static int asus_acpi_remove(struct acpi_device *device, int type)
1538 struct asus_laptop *asus = acpi_driver_data(device);
1540 asus_backlight_exit(asus);
1541 asus_led_exit(asus);
1542 asus_input_exit(asus);
1543 asus_platform_exit(asus);
1550 static const struct acpi_device_id asus_device_ids[] = {
1555 MODULE_DEVICE_TABLE(acpi, asus_device_ids);
1557 static struct acpi_driver asus_acpi_driver = {
1558 .name = ASUS_LAPTOP_NAME,
1559 .class = ASUS_LAPTOP_CLASS,
1560 .owner = THIS_MODULE,
1561 .ids = asus_device_ids,
1562 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1564 .add = asus_acpi_add,
1565 .remove = asus_acpi_remove,
1566 .notify = asus_acpi_notify,
1570 static int __init asus_laptop_init(void)
1574 result = platform_driver_register(&platform_driver);
1578 result = acpi_bus_register_driver(&asus_acpi_driver);
1580 goto fail_acpi_driver;
1581 if (!asus_device_present) {
1583 goto fail_no_device;
1588 acpi_bus_unregister_driver(&asus_acpi_driver);
1590 platform_driver_unregister(&platform_driver);
1594 static void __exit asus_laptop_exit(void)
1596 acpi_bus_unregister_driver(&asus_acpi_driver);
1597 platform_driver_unregister(&platform_driver);
1600 module_init(asus_laptop_init);
1601 module_exit(asus_laptop_exit);