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 ASUS_HANDLE(mled_set, ASUS_LAPTOP_PREFIX "MLED");
119 ASUS_HANDLE(tled_set, ASUS_LAPTOP_PREFIX "TLED");
120 ASUS_HANDLE(rled_set, ASUS_LAPTOP_PREFIX "RLED"); /* W1JC */
121 ASUS_HANDLE(pled_set, ASUS_LAPTOP_PREFIX "PLED"); /* A7J */
122 ASUS_HANDLE(gled_set, ASUS_LAPTOP_PREFIX "GLED"); /* G1, G2 (probably) */
125 ASUS_HANDLE(ledd_set, ASUS_LAPTOP_PREFIX "SLCM");
129 * WLED and BLED are not handled like other XLED, because in some dsdt
130 * they also control the WLAN/Bluetooth device.
132 ASUS_HANDLE(wl_switch, ASUS_LAPTOP_PREFIX "WLED");
133 ASUS_HANDLE(bt_switch, ASUS_LAPTOP_PREFIX "BLED");
134 ASUS_HANDLE(wireless_status, ASUS_LAPTOP_PREFIX "RSTS"); /* All new models */
137 ASUS_HANDLE(brightness_set, ASUS_LAPTOP_PREFIX "SPLV");
138 ASUS_HANDLE(brightness_get, ASUS_LAPTOP_PREFIX "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 ASUS_HANDLE(display_set, ASUS_LAPTOP_PREFIX "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 ASUS_HANDLE(ls_switch, ASUS_LAPTOP_PREFIX "ALSC"); /* Z71A Z71V */
177 ASUS_HANDLE(ls_level, ASUS_LAPTOP_PREFIX "ALSL"); /* Z71A Z71V */
180 /* R2H use different handle for GPS on/off */
181 ASUS_HANDLE(gps_on, ASUS_LAPTOP_PREFIX "SDON"); /* R2H */
182 ASUS_HANDLE(gps_off, ASUS_LAPTOP_PREFIX "SDOF"); /* R2H */
183 ASUS_HANDLE(gps_status, ASUS_LAPTOP_PREFIX "GPST");
186 ASUS_HANDLE(kled_set, ASUS_LAPTOP_PREFIX "SLKB");
187 ASUS_HANDLE(kled_get, ASUS_LAPTOP_PREFIX "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 /* Generic LED function */
327 static void asus_led_set(struct asus_laptop *asus, acpi_handle handle,
330 if (handle == mled_set_handle)
332 else if (handle == gled_set_handle)
337 write_acpi_int(handle, NULL, value);
343 #define ASUS_LED(object, ledname, max) \
344 static void object##_led_set(struct led_classdev *led_cdev, \
345 enum led_brightness value); \
346 static enum led_brightness object##_led_get( \
347 struct led_classdev *led_cdev); \
348 static void object##_led_update(struct work_struct *ignored); \
349 static struct led_classdev object##_led = { \
350 .name = "asus::" ledname, \
351 .brightness_set = object##_led_set, \
352 .brightness_get = object##_led_get, \
353 .max_brightness = max \
356 ASUS_LED(mled, "mail", 1);
357 ASUS_LED(tled, "touchpad", 1);
358 ASUS_LED(rled, "record", 1);
359 ASUS_LED(pled, "phone", 1);
360 ASUS_LED(gled, "gaming", 1);
361 ASUS_LED(kled, "kbd_backlight", 3);
363 /* /sys/class/led handlers */
364 #define ASUS_LED_HANDLER(object, mask) \
365 static void object##_led_set(struct led_classdev *led_cdev, \
366 enum led_brightness value) \
368 struct asus_laptop *asus = \
369 led_to_asus(led_cdev, object); \
371 asus->leds.object##_wk = (value > 0) ? 1 : 0; \
372 queue_work(asus->leds.workqueue, \
373 &asus->leds.object##_work); \
375 static void object##_led_update(struct work_struct *work) \
377 struct asus_laptop *asus = work_to_asus(work, object); \
379 int value = asus->leds.object##_wk; \
380 asus_led_set(asus, object##_set_handle, value); \
382 static enum led_brightness object##_led_get( \
383 struct led_classdev *led_cdev) \
385 return led_cdev->brightness; \
388 ASUS_LED_HANDLER(mled, MLED_ON);
389 ASUS_LED_HANDLER(pled, PLED_ON);
390 ASUS_LED_HANDLER(rled, RLED_ON);
391 ASUS_LED_HANDLER(tled, TLED_ON);
392 ASUS_LED_HANDLER(gled, GLED_ON);
395 * Keyboard backlight (also a LED)
397 static int asus_kled_lvl(void)
399 unsigned long long kblv;
400 struct acpi_object_list params;
401 union acpi_object in_obj;
405 params.pointer = &in_obj;
406 in_obj.type = ACPI_TYPE_INTEGER;
407 in_obj.integer.value = 2;
409 rv = acpi_evaluate_integer(kled_get_handle, NULL, ¶ms, &kblv);
410 if (ACPI_FAILURE(rv)) {
411 pr_warning("Error reading kled level\n");
417 static int asus_kled_set(struct asus_laptop *asus, int kblv)
420 kblv = (1 << 7) | (kblv & 0x7F);
424 if (write_acpi_int(kled_set_handle, NULL, kblv)) {
425 pr_warning("Keyboard LED display write failed\n");
431 static void kled_led_set(struct led_classdev *led_cdev,
432 enum led_brightness value)
434 struct asus_laptop *asus = led_to_asus(led_cdev, kled);
436 asus->leds.kled_wk = value;
437 queue_work(asus->leds.workqueue, &asus->leds.kled_work);
440 static void kled_led_update(struct work_struct *work)
442 struct asus_laptop *asus = work_to_asus(work, kled);
444 asus_kled_set(asus, asus->leds.kled_wk);
447 static enum led_brightness kled_led_get(struct led_classdev *led_cdev)
449 return asus_kled_lvl();
452 #define ASUS_LED_UNREGISTER(object) \
453 if (object##_led.dev) \
454 led_classdev_unregister(&object##_led)
456 static void asus_led_exit(struct asus_laptop *asus)
458 ASUS_LED_UNREGISTER(mled);
459 ASUS_LED_UNREGISTER(tled);
460 ASUS_LED_UNREGISTER(pled);
461 ASUS_LED_UNREGISTER(rled);
462 ASUS_LED_UNREGISTER(gled);
463 ASUS_LED_UNREGISTER(kled);
464 if (asus->leds.workqueue) {
465 destroy_workqueue(asus->leds.workqueue);
466 asus->leds.workqueue = NULL;
470 /* Ugly macro, need to fix that later */
471 #define ASUS_LED_REGISTER(asus, object, _name, max) \
473 struct led_classdev *ldev = &asus->leds.object; \
474 if (!object##_set_handle) \
477 INIT_WORK(&asus->leds.object##_work, object##_led_update); \
478 ldev->name = "asus::" _name; \
479 ldev->brightness_set = object##_led_set; \
480 ldev->max_brightness = max; \
481 rv = led_classdev_register(&asus->platform_device->dev, ldev); \
486 static int asus_led_init(struct asus_laptop *asus)
491 * Functions that actually update the LED's are called from a
492 * workqueue. By doing this as separate work rather than when the LED
493 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
494 * potentially bad time, such as a timer interrupt.
496 asus->leds.workqueue = create_singlethread_workqueue("led_workqueue");
497 if (!asus->leds.workqueue)
500 ASUS_LED_REGISTER(asus, mled, "mail", 1);
501 ASUS_LED_REGISTER(asus, tled, "touchpad", 1);
502 ASUS_LED_REGISTER(asus, rled, "record", 1);
503 ASUS_LED_REGISTER(asus, pled, "phone", 1);
504 ASUS_LED_REGISTER(asus, gled, "gaming", 1);
505 if (kled_set_handle && kled_get_handle)
506 ASUS_LED_REGISTER(asus, kled, "kbd_backlight", 3);
516 static int asus_lcd_status(struct asus_laptop *asus)
518 return asus->lcd_state;
521 static int asus_lcd_set(struct asus_laptop *asus, int value)
524 acpi_status status = 0;
528 if (lcd == asus_lcd_status(asus))
531 if (!lcd_switch_handle)
534 status = acpi_evaluate_object(lcd_switch_handle,
537 if (ACPI_FAILURE(status)) {
538 pr_warning("Error switching LCD\n");
542 asus->lcd_state = lcd;
546 static void lcd_blank(struct asus_laptop *asus, int blank)
548 struct backlight_device *bd = asus->backlight_device;
550 asus->lcd_state = (blank == FB_BLANK_UNBLANK);
553 bd->props.power = blank;
554 backlight_update_status(bd);
558 static int asus_read_brightness(struct backlight_device *bd)
560 unsigned long long value;
561 acpi_status rv = AE_OK;
563 rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value);
564 if (ACPI_FAILURE(rv))
565 pr_warning("Error reading brightness\n");
570 static int asus_set_brightness(struct backlight_device *bd, int value)
572 if (write_acpi_int(brightness_set_handle, NULL, value)) {
573 pr_warning("Error changing brightness\n");
579 static int update_bl_status(struct backlight_device *bd)
581 struct asus_laptop *asus = bl_get_data(bd);
583 int value = bd->props.brightness;
585 rv = asus_set_brightness(bd, value);
589 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0;
590 return asus_lcd_set(asus, value);
593 static struct backlight_ops asusbl_ops = {
594 .get_brightness = asus_read_brightness,
595 .update_status = update_bl_status,
598 static int asus_backlight_init(struct asus_laptop *asus)
600 struct backlight_device *bd;
601 struct device *dev = &asus->platform_device->dev;
603 if (brightness_set_handle && lcd_switch_handle) {
604 bd = backlight_device_register(ASUS_LAPTOP_FILE, dev,
607 pr_err("Could not register asus backlight device\n");
608 asus->backlight_device = NULL;
612 asus->backlight_device = bd;
614 bd->props.max_brightness = 15;
615 bd->props.brightness = asus_read_brightness(NULL);
616 bd->props.power = FB_BLANK_UNBLANK;
617 backlight_update_status(bd);
622 static void asus_backlight_exit(struct asus_laptop *asus)
624 if (asus->backlight_device)
625 backlight_device_unregister(asus->backlight_device);
629 * Platform device handlers
633 * We write our info in page, we begin at offset off and cannot write more
634 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
635 * number of bytes written in page
637 static ssize_t show_infos(struct device *dev,
638 struct device_attribute *attr, char *page)
640 struct asus_laptop *asus = dev_get_drvdata(dev);
642 unsigned long long temp;
643 char buf[16]; /* enough for all info */
644 acpi_status rv = AE_OK;
647 * We use the easy way, we don't care of off and count, so we don't set eof
651 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
652 len += sprintf(page + len, "Model reference : %s\n", asus->name);
654 * The SFUN method probably allows the original driver to get the list
655 * of features supported by a given model. For now, 0x0100 or 0x0800
656 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
657 * The significance of others is yet to be found.
659 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
660 if (!ACPI_FAILURE(rv))
661 len += sprintf(page + len, "SFUN value : %#x\n",
664 * The HWRS method return informations about the hardware.
665 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
666 * The significance of others is yet to be found.
667 * If we don't find the method, we assume the device are present.
669 rv = acpi_evaluate_integer(asus->handle, "HRWS", NULL, &temp);
670 if (!ACPI_FAILURE(rv))
671 len += sprintf(page + len, "HRWS value : %#x\n",
674 * Another value for userspace: the ASYM method returns 0x02 for
675 * battery low and 0x04 for battery critical, its readings tend to be
676 * more accurate than those provided by _BST.
677 * Note: since not all the laptops provide this method, errors are
680 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
681 if (!ACPI_FAILURE(rv))
682 len += sprintf(page + len, "ASYM value : %#x\n",
684 if (asus->dsdt_info) {
685 snprintf(buf, 16, "%d", asus->dsdt_info->length);
686 len += sprintf(page + len, "DSDT length : %s\n", buf);
687 snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
688 len += sprintf(page + len, "DSDT checksum : %s\n", buf);
689 snprintf(buf, 16, "%d", asus->dsdt_info->revision);
690 len += sprintf(page + len, "DSDT revision : %s\n", buf);
691 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
692 len += sprintf(page + len, "OEM id : %s\n", buf);
693 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
694 len += sprintf(page + len, "OEM table id : %s\n", buf);
695 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
696 len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
697 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
698 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
699 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
700 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
706 static int parse_arg(const char *buf, unsigned long count, int *val)
712 if (sscanf(buf, "%i", val) != 1)
717 static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
718 const char *buf, size_t count,
724 rv = parse_arg(buf, count, &value);
728 if (write_acpi_int(handle, NULL, value))
736 static ssize_t show_ledd(struct device *dev,
737 struct device_attribute *attr, char *buf)
739 struct asus_laptop *asus = dev_get_drvdata(dev);
741 return sprintf(buf, "0x%08x\n", asus->ledd_status);
744 static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
745 const char *buf, size_t count)
747 struct asus_laptop *asus = dev_get_drvdata(dev);
750 rv = parse_arg(buf, count, &value);
752 if (write_acpi_int(ledd_set_handle, NULL, value))
753 pr_warning("LED display write failed\n");
755 asus->ledd_status = (u32) value;
763 static int asus_wireless_status(struct asus_laptop *asus, int mask)
765 unsigned long long status;
766 acpi_status rv = AE_OK;
768 if (!asus->have_rsts)
769 return (asus->wireless_status & mask) ? 1 : 0;
771 rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status);
772 if (ACPI_FAILURE(rv)) {
773 pr_warning("Error reading Wireless status\n");
776 return !!(status & mask);
782 static ssize_t show_wlan(struct device *dev,
783 struct device_attribute *attr, char *buf)
785 struct asus_laptop *asus = dev_get_drvdata(dev);
787 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
790 static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
791 const char *buf, size_t count)
793 struct asus_laptop *asus = dev_get_drvdata(dev);
795 return sysfs_acpi_set(asus, buf, count, wl_switch_handle);
801 static ssize_t show_bluetooth(struct device *dev,
802 struct device_attribute *attr, char *buf)
804 struct asus_laptop *asus = dev_get_drvdata(dev);
806 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
809 static ssize_t store_bluetooth(struct device *dev,
810 struct device_attribute *attr, const char *buf,
813 struct asus_laptop *asus = dev_get_drvdata(dev);
815 return sysfs_acpi_set(asus, buf, count, bt_switch_handle);
821 static void asus_set_display(struct asus_laptop *asus, int value)
823 /* no sanity check needed for now */
824 if (write_acpi_int(display_set_handle, NULL, value))
825 pr_warning("Error setting display\n");
829 static int read_display(struct asus_laptop *asus)
831 unsigned long long value = 0;
832 acpi_status rv = AE_OK;
835 * In most of the case, we know how to set the display, but sometime
838 if (display_get_handle) {
839 rv = acpi_evaluate_integer(display_get_handle, NULL,
841 if (ACPI_FAILURE(rv))
842 pr_warning("Error reading display status\n");
845 value &= 0x0F; /* needed for some models, shouldn't hurt others */
851 * Now, *this* one could be more user-friendly, but so far, no-one has
852 * complained. The significance of bits is the same as in store_disp()
854 static ssize_t show_disp(struct device *dev,
855 struct device_attribute *attr, char *buf)
857 struct asus_laptop *asus = dev_get_drvdata(dev);
859 return sprintf(buf, "%d\n", read_display(asus));
863 * Experimental support for display switching. As of now: 1 should activate
864 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
865 * Any combination (bitwise) of these will suffice. I never actually tested 4
866 * displays hooked up simultaneously, so be warned. See the acpi4asus README
869 static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
870 const char *buf, size_t count)
872 struct asus_laptop *asus = dev_get_drvdata(dev);
875 rv = parse_arg(buf, count, &value);
877 asus_set_display(asus, value);
884 static void asus_als_switch(struct asus_laptop *asus, int value)
886 if (write_acpi_int(ls_switch_handle, NULL, value))
887 pr_warning("Error setting light sensor switch\n");
888 asus->light_switch = value;
891 static ssize_t show_lssw(struct device *dev,
892 struct device_attribute *attr, char *buf)
894 struct asus_laptop *asus = dev_get_drvdata(dev);
896 return sprintf(buf, "%d\n", asus->light_switch);
899 static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
900 const char *buf, size_t count)
902 struct asus_laptop *asus = dev_get_drvdata(dev);
905 rv = parse_arg(buf, count, &value);
907 asus_als_switch(asus, value ? 1 : 0);
912 static void asus_als_level(struct asus_laptop *asus, int value)
914 if (write_acpi_int(ls_level_handle, NULL, value))
915 pr_warning("Error setting light sensor level\n");
916 asus->light_level = value;
919 static ssize_t show_lslvl(struct device *dev,
920 struct device_attribute *attr, char *buf)
922 struct asus_laptop *asus = dev_get_drvdata(dev);
924 return sprintf(buf, "%d\n", asus->light_level);
927 static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
928 const char *buf, size_t count)
930 struct asus_laptop *asus = dev_get_drvdata(dev);
933 rv = parse_arg(buf, count, &value);
935 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
936 /* 0 <= value <= 15 */
937 asus_als_level(asus, value);
947 static int asus_gps_status(struct asus_laptop *asus)
949 unsigned long long status;
950 acpi_status rv = AE_OK;
952 rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status);
953 if (ACPI_FAILURE(rv)) {
954 pr_warning("Error reading GPS status\n");
960 static int asus_gps_switch(struct asus_laptop *asus, int status)
962 acpi_handle handle = status ? gps_on_handle : gps_off_handle;
964 if (write_acpi_int(handle, NULL, 0x02))
969 static ssize_t show_gps(struct device *dev,
970 struct device_attribute *attr, char *buf)
972 struct asus_laptop *asus = dev_get_drvdata(dev);
974 return sprintf(buf, "%d\n", asus_gps_status(asus));
977 static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
978 const char *buf, size_t count)
980 struct asus_laptop *asus = dev_get_drvdata(dev);
984 rv = parse_arg(buf, count, &value);
987 ret = asus_gps_switch(asus, !!value);
994 * Input device (i.e. hotkeys)
996 static struct key_entry *asus_get_entry_by_scancode(struct asus_laptop *asus,
999 struct key_entry *key;
1001 for (key = asus->keymap; key->type != KE_END; key++)
1002 if (code == key->code)
1008 static struct key_entry *asus_get_entry_by_keycode(struct asus_laptop *asus,
1011 struct key_entry *key;
1013 for (key = asus->keymap; key->type != KE_END; key++)
1014 if (code == key->keycode && key->type == KE_KEY)
1020 static int asus_getkeycode(struct input_dev *dev, int scancode, int *keycode)
1022 struct asus_laptop *asus = input_get_drvdata(dev);
1023 struct key_entry *key = asus_get_entry_by_scancode(asus, scancode);
1025 if (key && key->type == KE_KEY) {
1026 *keycode = key->keycode;
1033 static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode)
1035 struct asus_laptop *asus = input_get_drvdata(dev);
1036 struct key_entry *key;
1039 if (keycode < 0 || keycode > KEY_MAX)
1042 key = asus_get_entry_by_scancode(asus, scancode);
1043 if (key && key->type == KE_KEY) {
1044 old_keycode = key->keycode;
1045 key->keycode = keycode;
1046 set_bit(keycode, dev->keybit);
1047 if (!asus_get_entry_by_keycode(asus, old_keycode))
1048 clear_bit(old_keycode, dev->keybit);
1055 static void asus_input_notify(struct asus_laptop *asus, int event)
1057 struct key_entry *key;
1059 key = asus_get_entry_by_scancode(asus, event);
1063 switch (key->type) {
1065 input_report_key(asus->inputdev, key->keycode, 1);
1066 input_sync(asus->inputdev);
1067 input_report_key(asus->inputdev, key->keycode, 0);
1068 input_sync(asus->inputdev);
1073 static int asus_input_init(struct asus_laptop *asus)
1075 const struct key_entry *key;
1078 asus->inputdev = input_allocate_device();
1079 if (!asus->inputdev) {
1080 pr_info("Unable to allocate input device\n");
1083 asus->inputdev->name = "Asus Laptop extra buttons";
1084 asus->inputdev->dev.parent = &asus->platform_device->dev;
1085 asus->inputdev->phys = ASUS_LAPTOP_FILE "/input0";
1086 asus->inputdev->id.bustype = BUS_HOST;
1087 asus->inputdev->getkeycode = asus_getkeycode;
1088 asus->inputdev->setkeycode = asus_setkeycode;
1089 input_set_drvdata(asus->inputdev, asus);
1091 asus->keymap = kmemdup(asus_keymap, sizeof(asus_keymap),
1093 for (key = asus->keymap; key->type != KE_END; key++) {
1094 switch (key->type) {
1096 set_bit(EV_KEY, asus->inputdev->evbit);
1097 set_bit(key->keycode, asus->inputdev->keybit);
1101 result = input_register_device(asus->inputdev);
1103 pr_info("Unable to register input device\n");
1104 input_free_device(asus->inputdev);
1109 static void asus_input_exit(struct asus_laptop *asus)
1112 input_unregister_device(asus->inputdev);
1118 static void asus_acpi_notify(struct acpi_device *device, u32 event)
1120 struct asus_laptop *asus = acpi_driver_data(device);
1124 * We need to tell the backlight device when the backlight power is
1127 if (event == ATKD_LCD_ON)
1128 lcd_blank(asus, FB_BLANK_UNBLANK);
1129 else if (event == ATKD_LCD_OFF)
1130 lcd_blank(asus, FB_BLANK_POWERDOWN);
1132 /* TODO Find a better way to handle events count. */
1133 count = asus->event_count[event % 128]++;
1134 acpi_bus_generate_proc_event(asus->device, event, count);
1135 acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1136 dev_name(&asus->device->dev), event,
1139 asus_input_notify(asus, event);
1142 #define ASUS_CREATE_DEVICE_ATTR(_name) \
1143 struct device_attribute dev_attr_##_name = { \
1145 .name = __stringify(_name), \
1151 #define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \
1153 dev_attr_##_name.attr.mode = _mode; \
1154 dev_attr_##_name.show = _show; \
1155 dev_attr_##_name.store = _store; \
1158 static ASUS_CREATE_DEVICE_ATTR(infos);
1159 static ASUS_CREATE_DEVICE_ATTR(wlan);
1160 static ASUS_CREATE_DEVICE_ATTR(bluetooth);
1161 static ASUS_CREATE_DEVICE_ATTR(display);
1162 static ASUS_CREATE_DEVICE_ATTR(ledd);
1163 static ASUS_CREATE_DEVICE_ATTR(ls_switch);
1164 static ASUS_CREATE_DEVICE_ATTR(ls_level);
1165 static ASUS_CREATE_DEVICE_ATTR(gps);
1167 static struct attribute *asuspf_attributes[] = {
1168 &dev_attr_infos.attr,
1169 &dev_attr_wlan.attr,
1170 &dev_attr_bluetooth.attr,
1171 &dev_attr_display.attr,
1172 &dev_attr_ledd.attr,
1173 &dev_attr_ls_switch.attr,
1174 &dev_attr_ls_level.attr,
1179 static struct attribute_group platform_attribute_group = {
1180 .attrs = asuspf_attributes
1183 static int asus_platform_init(struct asus_laptop *asus)
1187 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
1188 if (!asus->platform_device)
1190 platform_set_drvdata(asus->platform_device, asus);
1192 result = platform_device_add(asus->platform_device);
1194 goto fail_platform_device;
1196 result = sysfs_create_group(&asus->platform_device->dev.kobj,
1197 &platform_attribute_group);
1203 platform_device_del(asus->platform_device);
1204 fail_platform_device:
1205 platform_device_put(asus->platform_device);
1209 static void asus_platform_exit(struct asus_laptop *asus)
1211 sysfs_remove_group(&asus->platform_device->dev.kobj,
1212 &platform_attribute_group);
1213 platform_device_unregister(asus->platform_device);
1216 static struct platform_driver platform_driver = {
1218 .name = ASUS_LAPTOP_FILE,
1219 .owner = THIS_MODULE,
1223 static void asus_laptop_add_fs(struct asus_laptop *asus)
1225 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL);
1227 if (wl_switch_handle)
1228 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan);
1230 if (bt_switch_handle)
1231 ASUS_SET_DEVICE_ATTR(bluetooth, 0644,
1232 show_bluetooth, store_bluetooth);
1234 if (display_set_handle && display_get_handle)
1235 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp);
1236 else if (display_set_handle)
1237 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp);
1239 if (ledd_set_handle)
1240 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);
1242 if (ls_switch_handle && ls_level_handle) {
1243 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);
1244 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);
1247 if (gps_status_handle && gps_on_handle && gps_off_handle)
1248 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps);
1251 static int asus_handle_init(char *name, acpi_handle * handle,
1252 char **paths, int num_paths)
1257 for (i = 0; i < num_paths; i++) {
1258 status = acpi_get_handle(NULL, paths[i], handle);
1259 if (ACPI_SUCCESS(status))
1267 #define ASUS_HANDLE_INIT(object) \
1268 asus_handle_init(#object, &object##_handle, object##_paths, \
1269 ARRAY_SIZE(object##_paths))
1272 * This function is used to initialize the context with right values. In this
1273 * method, we can make all the detection we want, and modify the asus_laptop
1276 static int asus_laptop_get_info(struct asus_laptop *asus)
1278 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1279 union acpi_object *model = NULL;
1280 unsigned long long bsts_result, hwrs_result;
1281 char *string = NULL;
1285 * Get DSDT headers early enough to allow for differentiating between
1286 * models, but late enough to allow acpi_bus_register_driver() to fail
1287 * before doing anything ACPI-specific. Should we encounter a machine,
1288 * which needs special handling (i.e. its hotkey device has a different
1289 * HID), this bit will be moved.
1291 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
1292 if (ACPI_FAILURE(status))
1293 pr_warning("Couldn't get the DSDT table header\n");
1295 /* We have to write 0 on init this far for all ASUS models */
1296 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
1297 pr_err("Hotkey initialization failed\n");
1301 /* This needs to be called for some laptops to init properly */
1303 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
1304 if (ACPI_FAILURE(status))
1305 pr_warning("Error calling BSTS\n");
1306 else if (bsts_result)
1307 pr_notice("BSTS called, 0x%02x returned\n",
1308 (uint) bsts_result);
1311 write_acpi_int(asus->handle, "CWAP", wapf);
1314 * Try to match the object returned by INIT to the specific model.
1315 * Handle every possible object (or the lack of thereof) the DSDT
1316 * writers might throw at us. When in trouble, we pass NULL to
1317 * asus_model_match() and try something completely different.
1319 if (buffer.pointer) {
1320 model = buffer.pointer;
1321 switch (model->type) {
1322 case ACPI_TYPE_STRING:
1323 string = model->string.pointer;
1325 case ACPI_TYPE_BUFFER:
1326 string = model->buffer.pointer;
1333 asus->name = kstrdup(string, GFP_KERNEL);
1338 pr_notice(" %s model detected\n", string);
1340 ASUS_HANDLE_INIT(mled_set);
1341 ASUS_HANDLE_INIT(tled_set);
1342 ASUS_HANDLE_INIT(rled_set);
1343 ASUS_HANDLE_INIT(pled_set);
1344 ASUS_HANDLE_INIT(gled_set);
1346 ASUS_HANDLE_INIT(ledd_set);
1348 ASUS_HANDLE_INIT(kled_set);
1349 ASUS_HANDLE_INIT(kled_get);
1352 * The HWRS method return informations about the hardware.
1353 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
1354 * The significance of others is yet to be found.
1355 * If we don't find the method, we assume the device are present.
1358 acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result);
1359 if (ACPI_FAILURE(status))
1360 hwrs_result = WL_HWRS | BT_HWRS;
1362 if (hwrs_result & WL_HWRS)
1363 ASUS_HANDLE_INIT(wl_switch);
1364 if (hwrs_result & BT_HWRS)
1365 ASUS_HANDLE_INIT(bt_switch);
1367 if (!ASUS_HANDLE_INIT(wireless_status))
1368 asus->have_rsts = true;
1370 ASUS_HANDLE_INIT(brightness_set);
1371 ASUS_HANDLE_INIT(brightness_get);
1373 ASUS_HANDLE_INIT(lcd_switch);
1375 ASUS_HANDLE_INIT(display_set);
1376 ASUS_HANDLE_INIT(display_get);
1379 * There is a lot of models with "ALSL", but a few get
1380 * a real light sens, so we need to check it.
1382 if (!ASUS_HANDLE_INIT(ls_switch))
1383 ASUS_HANDLE_INIT(ls_level);
1385 ASUS_HANDLE_INIT(gps_on);
1386 ASUS_HANDLE_INIT(gps_off);
1387 ASUS_HANDLE_INIT(gps_status);
1394 static bool asus_device_present;
1396 static int __devinit asus_acpi_init(struct asus_laptop *asus)
1400 result = acpi_bus_get_status(asus->device);
1403 if (!asus->device->status.present) {
1404 pr_err("Hotkey device not present, aborting\n");
1408 result = asus_laptop_get_info(asus);
1412 asus_laptop_add_fs(asus);
1414 /* WLED and BLED are on by default */
1415 if (bluetooth_status >= 0)
1416 write_acpi_int(bt_switch_handle, NULL, !!bluetooth_status);
1417 if (wireless_status >= 0)
1418 write_acpi_int(wl_switch_handle, NULL, !!wireless_status);
1420 /* Keyboard Backlight is on by default */
1421 if (kled_set_handle)
1422 asus_kled_set(asus, 1);
1424 /* LED display is off by default */
1425 asus->ledd_status = 0xFFF;
1427 /* Set initial values of light sensor and level */
1428 asus->light_switch = 0; /* Default to light sensor disabled */
1429 asus->light_level = 5; /* level 5 for sensor sensitivity */
1431 if (ls_switch_handle)
1432 asus_als_switch(asus, asus->light_switch);
1434 if (ls_level_handle)
1435 asus_als_level(asus, asus->light_level);
1437 /* GPS is on by default */
1438 asus_gps_switch(asus, 1);
1442 static int __devinit asus_acpi_add(struct acpi_device *device)
1444 struct asus_laptop *asus;
1447 pr_notice("Asus Laptop Support version %s\n",
1448 ASUS_LAPTOP_VERSION);
1449 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
1452 asus->handle = device->handle;
1453 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
1454 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
1455 device->driver_data = asus;
1456 asus->device = device;
1458 result = asus_acpi_init(asus);
1463 * Register the platform device first. It is used as a parent for the
1464 * sub-devices below.
1466 result = asus_platform_init(asus);
1470 if (!acpi_video_backlight_support()) {
1471 result = asus_backlight_init(asus);
1473 goto fail_backlight;
1475 pr_info("Backlight controlled by ACPI video driver\n");
1477 result = asus_input_init(asus);
1481 result = asus_led_init(asus);
1485 asus_device_present = true;
1489 asus_input_exit(asus);
1491 asus_backlight_exit(asus);
1493 asus_platform_exit(asus);
1501 static int asus_acpi_remove(struct acpi_device *device, int type)
1503 struct asus_laptop *asus = acpi_driver_data(device);
1505 asus_backlight_exit(asus);
1506 asus_led_exit(asus);
1507 asus_input_exit(asus);
1508 asus_platform_exit(asus);
1515 static const struct acpi_device_id asus_device_ids[] = {
1520 MODULE_DEVICE_TABLE(acpi, asus_device_ids);
1522 static struct acpi_driver asus_acpi_driver = {
1523 .name = ASUS_LAPTOP_NAME,
1524 .class = ASUS_LAPTOP_CLASS,
1525 .owner = THIS_MODULE,
1526 .ids = asus_device_ids,
1527 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1529 .add = asus_acpi_add,
1530 .remove = asus_acpi_remove,
1531 .notify = asus_acpi_notify,
1535 static int __init asus_laptop_init(void)
1539 result = platform_driver_register(&platform_driver);
1543 result = acpi_bus_register_driver(&asus_acpi_driver);
1545 goto fail_acpi_driver;
1546 if (!asus_device_present) {
1548 goto fail_no_device;
1553 acpi_bus_unregister_driver(&asus_acpi_driver);
1555 platform_driver_unregister(&platform_driver);
1559 static void __exit asus_laptop_exit(void)
1561 acpi_bus_unregister_driver(&asus_acpi_driver);
1562 platform_driver_unregister(&platform_driver);
1565 module_init(asus_laptop_init);
1566 module_exit(asus_laptop_exit);