2 * asus-laptop.c - Asus Laptop Support
5 * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
6 * Copyright (C) 2006-2007 Corentin Chary
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * The development page for this driver is located at
24 * http://sourceforge.net/projects/acpi4asus/
27 * Pontus Fuchs - Helper functions, cleanup
28 * Johann Wiesner - Small compile fixes
29 * John Belmonte - ACPI code for Toshiba laptop was a good starting point.
30 * Eric Burghard - LED display support for W1N
31 * Josh Green - Light Sens support
32 * Thomas Tuttle - His first patch for led support was very helpfull
33 * Sam Lin - GPS support
36 #include <linux/kernel.h>
37 #include <linux/module.h>
38 #include <linux/init.h>
39 #include <linux/types.h>
40 #include <linux/err.h>
41 #include <linux/proc_fs.h>
42 #include <linux/backlight.h>
44 #include <linux/leds.h>
45 #include <linux/platform_device.h>
46 #include <acpi/acpi_drivers.h>
47 #include <acpi/acpi_bus.h>
48 #include <asm/uaccess.h>
49 #include <linux/input.h>
51 #define ASUS_LAPTOP_VERSION "0.42"
53 #define ASUS_HOTK_NAME "Asus Laptop Support"
54 #define ASUS_HOTK_CLASS "hotkey"
55 #define ASUS_HOTK_DEVICE_NAME "Hotkey"
56 #define ASUS_HOTK_FILE "asus-laptop"
57 #define ASUS_HOTK_PREFIX "\\_SB.ATKD."
60 * Some events we use, same for all Asus
62 #define ATKD_BR_UP 0x10
63 #define ATKD_BR_DOWN 0x20
64 #define ATKD_LCD_ON 0x33
65 #define ATKD_LCD_OFF 0x34
68 * Known bits returned by \_SB.ATKD.HWRS
74 * Flags for hotk status
75 * WL_ON and BT_ON are also used for wireless_status()
77 #define WL_ON 0x01 //internal Wifi
78 #define BT_ON 0x02 //internal Bluetooth
79 #define MLED_ON 0x04 //mail LED
80 #define TLED_ON 0x08 //touchpad LED
81 #define RLED_ON 0x10 //Record LED
82 #define PLED_ON 0x20 //Phone LED
83 #define GLED_ON 0x40 //Gaming LED
84 #define LCD_ON 0x80 //LCD backlight
85 #define GPS_ON 0x100 //GPS
87 #define ASUS_LOG ASUS_HOTK_FILE ": "
88 #define ASUS_ERR KERN_ERR ASUS_LOG
89 #define ASUS_WARNING KERN_WARNING ASUS_LOG
90 #define ASUS_NOTICE KERN_NOTICE ASUS_LOG
91 #define ASUS_INFO KERN_INFO ASUS_LOG
92 #define ASUS_DEBUG KERN_DEBUG ASUS_LOG
94 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
95 MODULE_DESCRIPTION(ASUS_HOTK_NAME);
96 MODULE_LICENSE("GPL");
98 /* WAPF defines the behavior of the Fn+Fx wlan key
99 * The significance of values is yet to be found, but
101 * 0x0 will do nothing
102 * 0x1 will allow to control the device with Fn+Fx key.
103 * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key
104 * 0x5 like 0x1 or 0x4
105 * So, if something doesn't work as you want, just try other values =)
107 static uint wapf = 1;
108 module_param(wapf, uint, 0644);
109 MODULE_PARM_DESC(wapf, "WAPF value");
111 #define ASUS_HANDLE(object, paths...) \
112 static acpi_handle object##_handle = NULL; \
113 static char *object##_paths[] = { paths }
116 ASUS_HANDLE(mled_set, ASUS_HOTK_PREFIX "MLED");
117 ASUS_HANDLE(tled_set, ASUS_HOTK_PREFIX "TLED");
118 ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED"); /* W1JC */
119 ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED"); /* A7J */
120 ASUS_HANDLE(gled_set, ASUS_HOTK_PREFIX "GLED"); /* G1, G2 (probably) */
123 ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "SLCM");
125 /* Bluetooth and WLAN
126 * WLED and BLED are not handled like other XLED, because in some dsdt
127 * they also control the WLAN/Bluetooth device.
129 ASUS_HANDLE(wl_switch, ASUS_HOTK_PREFIX "WLED");
130 ASUS_HANDLE(bt_switch, ASUS_HOTK_PREFIX "BLED");
131 ASUS_HANDLE(wireless_status, ASUS_HOTK_PREFIX "RSTS"); /* All new models */
134 ASUS_HANDLE(brightness_set, ASUS_HOTK_PREFIX "SPLV");
135 ASUS_HANDLE(brightness_get, ASUS_HOTK_PREFIX "GPLV");
138 ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */
139 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */
140 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */
141 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */
142 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */
143 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */
144 "\\_SB.PCI0.PX40.Q10", /* S1x */
145 "\\Q10"); /* A2x, L2D, L3D, M2E */
148 ASUS_HANDLE(display_set, ASUS_HOTK_PREFIX "SDSP");
149 ASUS_HANDLE(display_get, "\\_SB.PCI0.P0P1.VGA.GETD", /* A6B, A6K A6R A7D F3JM L4R M6R A3G
150 M6A M6V VX-1 V6J V6V W3Z */
151 "\\_SB.PCI0.P0P2.VGA.GETD", /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V
152 S5A M5A z33A W1Jc W2V G1 */
153 "\\_SB.PCI0.P0P3.VGA.GETD", /* A6V A6Q */
154 "\\_SB.PCI0.P0PA.VGA.GETD", /* A6T, A6M */
155 "\\_SB.PCI0.PCI1.VGAC.NMAP", /* L3C */
156 "\\_SB.PCI0.VGA.GETD", /* Z96F */
158 "\\ADVG", /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */
160 "\\INFB", /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */
161 "\\SSTE"); /* A3F A6F A3N A3L M6N W3N W6A */
163 ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */
164 ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */
167 /* R2H use different handle for GPS on/off */
168 ASUS_HANDLE(gps_on, ASUS_HOTK_PREFIX "SDON"); /* R2H */
169 ASUS_HANDLE(gps_off, ASUS_HOTK_PREFIX "SDOF"); /* R2H */
170 ASUS_HANDLE(gps_status, ASUS_HOTK_PREFIX "GPST");
173 * This is the main structure, we can use it to store anything interesting
174 * about the hotk device
177 char *name; //laptop name
178 struct acpi_device *device; //the device we are in
179 acpi_handle handle; //the handle of the hotk device
180 char status; //status of the hotk, for LEDs, ...
181 u32 ledd_status; //status of the LED display
182 u8 light_level; //light sensor level
183 u8 light_switch; //light sensor switch value
184 u16 event_count[128]; //count for each event TODO make this better
185 struct input_dev *inputdev;
190 * This header is made available to allow proper configuration given model,
191 * revision number , ... this info cannot go in struct asus_hotk because it is
192 * available before the hotk
194 static struct acpi_table_header *asus_info;
196 /* The actual device the driver binds to */
197 static struct asus_hotk *hotk;
200 * The hotkey driver declaration
202 static const struct acpi_device_id asus_device_ids[] = {
206 MODULE_DEVICE_TABLE(acpi, asus_device_ids);
208 static int asus_hotk_add(struct acpi_device *device);
209 static int asus_hotk_remove(struct acpi_device *device, int type);
210 static struct acpi_driver asus_hotk_driver = {
211 .name = ASUS_HOTK_NAME,
212 .class = ASUS_HOTK_CLASS,
213 .ids = asus_device_ids,
215 .add = asus_hotk_add,
216 .remove = asus_hotk_remove,
220 /* The backlight device /sys/class/backlight */
221 static struct backlight_device *asus_backlight_device;
224 * The backlight class declaration
226 static int read_brightness(struct backlight_device *bd);
227 static int update_bl_status(struct backlight_device *bd);
228 static struct backlight_ops asusbl_ops = {
229 .get_brightness = read_brightness,
230 .update_status = update_bl_status,
233 /* These functions actually update the LED's, and are called from a
234 * workqueue. By doing this as separate work rather than when the LED
235 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
236 * potentially bad time, such as a timer interrupt. */
237 static struct workqueue_struct *led_workqueue;
239 #define ASUS_LED(object, ledname) \
240 static void object##_led_set(struct led_classdev *led_cdev, \
241 enum led_brightness value); \
242 static void object##_led_update(struct work_struct *ignored); \
243 static int object##_led_wk; \
244 static DECLARE_WORK(object##_led_work, object##_led_update); \
245 static struct led_classdev object##_led = { \
246 .name = "asus::" ledname, \
247 .brightness_set = object##_led_set, \
250 ASUS_LED(mled, "mail");
251 ASUS_LED(tled, "touchpad");
252 ASUS_LED(rled, "record");
253 ASUS_LED(pled, "phone");
254 ASUS_LED(gled, "gaming");
262 enum { KE_KEY, KE_END };
264 static struct key_entry asus_keymap[] = {
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_STOP},
273 {KE_KEY, 0x45, KEY_PLAYPAUSE},
274 {KE_KEY, 0x50, KEY_EMAIL},
275 {KE_KEY, 0x51, KEY_WWW},
276 {KE_KEY, 0x5C, BTN_EXTRA}, /* Performance */
277 {KE_KEY, 0x5D, KEY_WLAN},
278 {KE_KEY, 0x61, KEY_SWITCHVIDEOMODE},
279 {KE_KEY, 0x6B, BTN_TOUCH}, /* Lock Mouse */
280 {KE_KEY, 0x82, KEY_CAMERA},
281 {KE_KEY, 0x8A, KEY_TV},
282 {KE_KEY, 0x95, KEY_MEDIA},
283 {KE_KEY, 0x99, KEY_PHONE},
288 * This function evaluates an ACPI method, given an int as parameter, the
289 * method is searched within the scope of the handle, can be NULL. The output
290 * of the method is written is output, which can also be NULL
292 * returns 0 if write is successful, -1 else.
294 static int write_acpi_int(acpi_handle handle, const char *method, int val,
295 struct acpi_buffer *output)
297 struct acpi_object_list params; //list of input parameters (an int here)
298 union acpi_object in_obj; //the only param we use
305 params.pointer = &in_obj;
306 in_obj.type = ACPI_TYPE_INTEGER;
307 in_obj.integer.value = val;
309 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
316 static int read_wireless_status(int mask)
318 unsigned long long status;
319 acpi_status rv = AE_OK;
321 if (!wireless_status_handle)
322 return (hotk->status & mask) ? 1 : 0;
324 rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status);
325 if (ACPI_FAILURE(rv))
326 printk(ASUS_WARNING "Error reading Wireless status\n");
328 return (status & mask) ? 1 : 0;
330 return (hotk->status & mask) ? 1 : 0;
333 static int read_gps_status(void)
335 unsigned long long status;
336 acpi_status rv = AE_OK;
338 rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status);
339 if (ACPI_FAILURE(rv))
340 printk(ASUS_WARNING "Error reading GPS status\n");
342 return status ? 1 : 0;
344 return (hotk->status & GPS_ON) ? 1 : 0;
347 /* Generic LED functions */
348 static int read_status(int mask)
350 /* There is a special method for both wireless devices */
351 if (mask == BT_ON || mask == WL_ON)
352 return read_wireless_status(mask);
353 else if (mask == GPS_ON)
354 return read_gps_status();
356 return (hotk->status & mask) ? 1 : 0;
359 static void write_status(acpi_handle handle, int out, int mask)
361 hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask);
368 out = (out & 0x1) + 1;
371 handle = (out) ? gps_on_handle : gps_off_handle;
379 if (write_acpi_int(handle, NULL, out, NULL))
380 printk(ASUS_WARNING " write failed %x\n", mask);
383 /* /sys/class/led handlers */
384 #define ASUS_LED_HANDLER(object, mask) \
385 static void object##_led_set(struct led_classdev *led_cdev, \
386 enum led_brightness value) \
388 object##_led_wk = (value > 0) ? 1 : 0; \
389 queue_work(led_workqueue, &object##_led_work); \
391 static void object##_led_update(struct work_struct *ignored) \
393 int value = object##_led_wk; \
394 write_status(object##_set_handle, value, (mask)); \
397 ASUS_LED_HANDLER(mled, MLED_ON);
398 ASUS_LED_HANDLER(pled, PLED_ON);
399 ASUS_LED_HANDLER(rled, RLED_ON);
400 ASUS_LED_HANDLER(tled, TLED_ON);
401 ASUS_LED_HANDLER(gled, GLED_ON);
403 static int get_lcd_state(void)
405 return read_status(LCD_ON);
408 static int set_lcd_state(int value)
411 acpi_status status = 0;
415 if (lcd == get_lcd_state())
418 if (lcd_switch_handle) {
419 status = acpi_evaluate_object(lcd_switch_handle,
422 if (ACPI_FAILURE(status))
423 printk(ASUS_WARNING "Error switching LCD\n");
426 write_status(NULL, lcd, LCD_ON);
430 static void lcd_blank(int blank)
432 struct backlight_device *bd = asus_backlight_device;
435 bd->props.power = blank;
436 backlight_update_status(bd);
440 static int read_brightness(struct backlight_device *bd)
442 unsigned long long value;
443 acpi_status rv = AE_OK;
445 rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value);
446 if (ACPI_FAILURE(rv))
447 printk(ASUS_WARNING "Error reading brightness\n");
452 static int set_brightness(struct backlight_device *bd, int value)
456 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
457 /* 0 <= value <= 15 */
459 if (write_acpi_int(brightness_set_handle, NULL, value, NULL)) {
460 printk(ASUS_WARNING "Error changing brightness\n");
467 static int update_bl_status(struct backlight_device *bd)
470 int value = bd->props.brightness;
472 rv = set_brightness(bd, value);
476 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0;
477 return set_lcd_state(value);
481 * Platform device handlers
485 * We write our info in page, we begin at offset off and cannot write more
486 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
487 * number of bytes written in page
489 static ssize_t show_infos(struct device *dev,
490 struct device_attribute *attr, char *page)
493 unsigned long long temp;
494 char buf[16]; //enough for all info
495 acpi_status rv = AE_OK;
498 * We use the easy way, we don't care of off and count, so we don't set eof
502 len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n");
503 len += sprintf(page + len, "Model reference : %s\n", hotk->name);
505 * The SFUN method probably allows the original driver to get the list
506 * of features supported by a given model. For now, 0x0100 or 0x0800
507 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
508 * The significance of others is yet to be found.
510 rv = acpi_evaluate_integer(hotk->handle, "SFUN", NULL, &temp);
511 if (!ACPI_FAILURE(rv))
512 len += sprintf(page + len, "SFUN value : 0x%04x\n",
515 * Another value for userspace: the ASYM method returns 0x02 for
516 * battery low and 0x04 for battery critical, its readings tend to be
517 * more accurate than those provided by _BST.
518 * Note: since not all the laptops provide this method, errors are
521 rv = acpi_evaluate_integer(hotk->handle, "ASYM", NULL, &temp);
522 if (!ACPI_FAILURE(rv))
523 len += sprintf(page + len, "ASYM value : 0x%04x\n",
526 snprintf(buf, 16, "%d", asus_info->length);
527 len += sprintf(page + len, "DSDT length : %s\n", buf);
528 snprintf(buf, 16, "%d", asus_info->checksum);
529 len += sprintf(page + len, "DSDT checksum : %s\n", buf);
530 snprintf(buf, 16, "%d", asus_info->revision);
531 len += sprintf(page + len, "DSDT revision : %s\n", buf);
532 snprintf(buf, 7, "%s", asus_info->oem_id);
533 len += sprintf(page + len, "OEM id : %s\n", buf);
534 snprintf(buf, 9, "%s", asus_info->oem_table_id);
535 len += sprintf(page + len, "OEM table id : %s\n", buf);
536 snprintf(buf, 16, "%x", asus_info->oem_revision);
537 len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
538 snprintf(buf, 5, "%s", asus_info->asl_compiler_id);
539 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
540 snprintf(buf, 16, "%x", asus_info->asl_compiler_revision);
541 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
547 static int parse_arg(const char *buf, unsigned long count, int *val)
553 if (sscanf(buf, "%i", val) != 1)
558 static ssize_t store_status(const char *buf, size_t count,
559 acpi_handle handle, int mask)
564 rv = parse_arg(buf, count, &value);
568 write_status(handle, out, mask);
576 static ssize_t show_ledd(struct device *dev,
577 struct device_attribute *attr, char *buf)
579 return sprintf(buf, "0x%08x\n", hotk->ledd_status);
582 static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
583 const char *buf, size_t count)
587 rv = parse_arg(buf, count, &value);
589 if (write_acpi_int(ledd_set_handle, NULL, value, NULL))
590 printk(ASUS_WARNING "LED display write failed\n");
592 hotk->ledd_status = (u32) value;
600 static ssize_t show_wlan(struct device *dev,
601 struct device_attribute *attr, char *buf)
603 return sprintf(buf, "%d\n", read_status(WL_ON));
606 static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
607 const char *buf, size_t count)
609 return store_status(buf, count, wl_switch_handle, WL_ON);
615 static ssize_t show_bluetooth(struct device *dev,
616 struct device_attribute *attr, char *buf)
618 return sprintf(buf, "%d\n", read_status(BT_ON));
621 static ssize_t store_bluetooth(struct device *dev,
622 struct device_attribute *attr, const char *buf,
625 return store_status(buf, count, bt_switch_handle, BT_ON);
631 static void set_display(int value)
633 /* no sanity check needed for now */
634 if (write_acpi_int(display_set_handle, NULL, value, NULL))
635 printk(ASUS_WARNING "Error setting display\n");
639 static int read_display(void)
641 unsigned long long value = 0;
642 acpi_status rv = AE_OK;
644 /* In most of the case, we know how to set the display, but sometime
646 if (display_get_handle) {
647 rv = acpi_evaluate_integer(display_get_handle, NULL,
649 if (ACPI_FAILURE(rv))
650 printk(ASUS_WARNING "Error reading display status\n");
653 value &= 0x0F; /* needed for some models, shouldn't hurt others */
659 * Now, *this* one could be more user-friendly, but so far, no-one has
660 * complained. The significance of bits is the same as in store_disp()
662 static ssize_t show_disp(struct device *dev,
663 struct device_attribute *attr, char *buf)
665 return sprintf(buf, "%d\n", read_display());
669 * Experimental support for display switching. As of now: 1 should activate
670 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
671 * Any combination (bitwise) of these will suffice. I never actually tested 4
672 * displays hooked up simultaneously, so be warned. See the acpi4asus README
675 static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
676 const char *buf, size_t count)
680 rv = parse_arg(buf, count, &value);
689 static void set_light_sens_switch(int value)
691 if (write_acpi_int(ls_switch_handle, NULL, value, NULL))
692 printk(ASUS_WARNING "Error setting light sensor switch\n");
693 hotk->light_switch = value;
696 static ssize_t show_lssw(struct device *dev,
697 struct device_attribute *attr, char *buf)
699 return sprintf(buf, "%d\n", hotk->light_switch);
702 static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
703 const char *buf, size_t count)
707 rv = parse_arg(buf, count, &value);
709 set_light_sens_switch(value ? 1 : 0);
714 static void set_light_sens_level(int value)
716 if (write_acpi_int(ls_level_handle, NULL, value, NULL))
717 printk(ASUS_WARNING "Error setting light sensor level\n");
718 hotk->light_level = value;
721 static ssize_t show_lslvl(struct device *dev,
722 struct device_attribute *attr, char *buf)
724 return sprintf(buf, "%d\n", hotk->light_level);
727 static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
728 const char *buf, size_t count)
732 rv = parse_arg(buf, count, &value);
734 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
735 /* 0 <= value <= 15 */
736 set_light_sens_level(value);
745 static ssize_t show_gps(struct device *dev,
746 struct device_attribute *attr, char *buf)
748 return sprintf(buf, "%d\n", read_status(GPS_ON));
751 static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
752 const char *buf, size_t count)
754 return store_status(buf, count, NULL, GPS_ON);
760 static struct key_entry *asus_get_entry_by_scancode(int code)
762 struct key_entry *key;
764 for (key = asus_keymap; key->type != KE_END; key++)
765 if (code == key->code)
771 static struct key_entry *asus_get_entry_by_keycode(int code)
773 struct key_entry *key;
775 for (key = asus_keymap; key->type != KE_END; key++)
776 if (code == key->keycode && key->type == KE_KEY)
782 static int asus_getkeycode(struct input_dev *dev, int scancode, int *keycode)
784 struct key_entry *key = asus_get_entry_by_scancode(scancode);
786 if (key && key->type == KE_KEY) {
787 *keycode = key->keycode;
794 static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode)
796 struct key_entry *key;
799 if (keycode < 0 || keycode > KEY_MAX)
802 key = asus_get_entry_by_scancode(scancode);
803 if (key && key->type == KE_KEY) {
804 old_keycode = key->keycode;
805 key->keycode = keycode;
806 set_bit(keycode, dev->keybit);
807 if (!asus_get_entry_by_keycode(old_keycode))
808 clear_bit(old_keycode, dev->keybit);
815 static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
817 static struct key_entry *key;
819 /* TODO Find a better way to handle events count. */
824 * We need to tell the backlight device when the backlight power is
827 if (event == ATKD_LCD_ON) {
828 write_status(NULL, 1, LCD_ON);
829 lcd_blank(FB_BLANK_UNBLANK);
830 } else if (event == ATKD_LCD_OFF) {
831 write_status(NULL, 0, LCD_ON);
832 lcd_blank(FB_BLANK_POWERDOWN);
835 acpi_bus_generate_netlink_event(hotk->device->pnp.device_class,
836 dev_name(&hotk->device->dev), event,
837 hotk->event_count[event % 128]++);
839 if (hotk->inputdev) {
840 key = asus_get_entry_by_scancode(event);
846 input_report_key(hotk->inputdev, key->keycode, 1);
847 input_sync(hotk->inputdev);
848 input_report_key(hotk->inputdev, key->keycode, 0);
849 input_sync(hotk->inputdev);
855 #define ASUS_CREATE_DEVICE_ATTR(_name) \
856 struct device_attribute dev_attr_##_name = { \
858 .name = __stringify(_name), \
864 #define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \
866 dev_attr_##_name.attr.mode = _mode; \
867 dev_attr_##_name.show = _show; \
868 dev_attr_##_name.store = _store; \
871 static ASUS_CREATE_DEVICE_ATTR(infos);
872 static ASUS_CREATE_DEVICE_ATTR(wlan);
873 static ASUS_CREATE_DEVICE_ATTR(bluetooth);
874 static ASUS_CREATE_DEVICE_ATTR(display);
875 static ASUS_CREATE_DEVICE_ATTR(ledd);
876 static ASUS_CREATE_DEVICE_ATTR(ls_switch);
877 static ASUS_CREATE_DEVICE_ATTR(ls_level);
878 static ASUS_CREATE_DEVICE_ATTR(gps);
880 static struct attribute *asuspf_attributes[] = {
881 &dev_attr_infos.attr,
883 &dev_attr_bluetooth.attr,
884 &dev_attr_display.attr,
886 &dev_attr_ls_switch.attr,
887 &dev_attr_ls_level.attr,
892 static struct attribute_group asuspf_attribute_group = {
893 .attrs = asuspf_attributes
896 static struct platform_driver asuspf_driver = {
898 .name = ASUS_HOTK_FILE,
899 .owner = THIS_MODULE,
903 static struct platform_device *asuspf_device;
905 static void asus_hotk_add_fs(void)
907 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL);
909 if (wl_switch_handle)
910 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan);
912 if (bt_switch_handle)
913 ASUS_SET_DEVICE_ATTR(bluetooth, 0644,
914 show_bluetooth, store_bluetooth);
916 if (display_set_handle && display_get_handle)
917 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp);
918 else if (display_set_handle)
919 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp);
922 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);
924 if (ls_switch_handle && ls_level_handle) {
925 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);
926 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);
929 if (gps_status_handle && gps_on_handle && gps_off_handle)
930 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps);
933 static int asus_handle_init(char *name, acpi_handle * handle,
934 char **paths, int num_paths)
939 for (i = 0; i < num_paths; i++) {
940 status = acpi_get_handle(NULL, paths[i], handle);
941 if (ACPI_SUCCESS(status))
949 #define ASUS_HANDLE_INIT(object) \
950 asus_handle_init(#object, &object##_handle, object##_paths, \
951 ARRAY_SIZE(object##_paths))
954 * This function is used to initialize the hotk with right values. In this
955 * method, we can make all the detection we want, and modify the hotk struct
957 static int asus_hotk_get_info(void)
959 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
960 union acpi_object *model = NULL;
961 unsigned long long bsts_result, hwrs_result;
966 * Get DSDT headers early enough to allow for differentiating between
967 * models, but late enough to allow acpi_bus_register_driver() to fail
968 * before doing anything ACPI-specific. Should we encounter a machine,
969 * which needs special handling (i.e. its hotkey device has a different
970 * HID), this bit will be moved. A global variable asus_info contains
973 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus_info);
974 if (ACPI_FAILURE(status))
975 printk(ASUS_WARNING "Couldn't get the DSDT table header\n");
977 /* We have to write 0 on init this far for all ASUS models */
978 if (write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
979 printk(ASUS_ERR "Hotkey initialization failed\n");
983 /* This needs to be called for some laptops to init properly */
985 acpi_evaluate_integer(hotk->handle, "BSTS", NULL, &bsts_result);
986 if (ACPI_FAILURE(status))
987 printk(ASUS_WARNING "Error calling BSTS\n");
988 else if (bsts_result)
989 printk(ASUS_NOTICE "BSTS called, 0x%02x returned\n",
993 write_acpi_int(hotk->handle, "CWAP", wapf, NULL);
996 * Try to match the object returned by INIT to the specific model.
997 * Handle every possible object (or the lack of thereof) the DSDT
998 * writers might throw at us. When in trouble, we pass NULL to
999 * asus_model_match() and try something completely different.
1001 if (buffer.pointer) {
1002 model = buffer.pointer;
1003 switch (model->type) {
1004 case ACPI_TYPE_STRING:
1005 string = model->string.pointer;
1007 case ACPI_TYPE_BUFFER:
1008 string = model->buffer.pointer;
1015 hotk->name = kstrdup(string, GFP_KERNEL);
1020 printk(ASUS_NOTICE " %s model detected\n", string);
1022 ASUS_HANDLE_INIT(mled_set);
1023 ASUS_HANDLE_INIT(tled_set);
1024 ASUS_HANDLE_INIT(rled_set);
1025 ASUS_HANDLE_INIT(pled_set);
1026 ASUS_HANDLE_INIT(gled_set);
1028 ASUS_HANDLE_INIT(ledd_set);
1031 * The HWRS method return informations about the hardware.
1032 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
1033 * The significance of others is yet to be found.
1034 * If we don't find the method, we assume the device are present.
1037 acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &hwrs_result);
1038 if (ACPI_FAILURE(status))
1039 hwrs_result = WL_HWRS | BT_HWRS;
1041 if (hwrs_result & WL_HWRS)
1042 ASUS_HANDLE_INIT(wl_switch);
1043 if (hwrs_result & BT_HWRS)
1044 ASUS_HANDLE_INIT(bt_switch);
1046 ASUS_HANDLE_INIT(wireless_status);
1048 ASUS_HANDLE_INIT(brightness_set);
1049 ASUS_HANDLE_INIT(brightness_get);
1051 ASUS_HANDLE_INIT(lcd_switch);
1053 ASUS_HANDLE_INIT(display_set);
1054 ASUS_HANDLE_INIT(display_get);
1056 /* There is a lot of models with "ALSL", but a few get
1057 a real light sens, so we need to check it. */
1058 if (!ASUS_HANDLE_INIT(ls_switch))
1059 ASUS_HANDLE_INIT(ls_level);
1061 ASUS_HANDLE_INIT(gps_on);
1062 ASUS_HANDLE_INIT(gps_off);
1063 ASUS_HANDLE_INIT(gps_status);
1070 static int asus_input_init(void)
1072 const struct key_entry *key;
1075 hotk->inputdev = input_allocate_device();
1076 if (!hotk->inputdev) {
1077 printk(ASUS_INFO "Unable to allocate input device\n");
1080 hotk->inputdev->name = "Asus Laptop extra buttons";
1081 hotk->inputdev->phys = ASUS_HOTK_FILE "/input0";
1082 hotk->inputdev->id.bustype = BUS_HOST;
1083 hotk->inputdev->getkeycode = asus_getkeycode;
1084 hotk->inputdev->setkeycode = asus_setkeycode;
1086 for (key = asus_keymap; key->type != KE_END; key++) {
1087 switch (key->type) {
1089 set_bit(EV_KEY, hotk->inputdev->evbit);
1090 set_bit(key->keycode, hotk->inputdev->keybit);
1094 result = input_register_device(hotk->inputdev);
1096 printk(ASUS_INFO "Unable to register input device\n");
1097 input_free_device(hotk->inputdev);
1102 static int asus_hotk_check(void)
1106 result = acpi_bus_get_status(hotk->device);
1110 if (hotk->device->status.present) {
1111 result = asus_hotk_get_info();
1113 printk(ASUS_ERR "Hotkey device not present, aborting\n");
1120 static int asus_hotk_found;
1122 static int asus_hotk_add(struct acpi_device *device)
1124 acpi_status status = AE_OK;
1130 printk(ASUS_NOTICE "Asus Laptop Support version %s\n",
1131 ASUS_LAPTOP_VERSION);
1133 hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL);
1137 hotk->handle = device->handle;
1138 strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME);
1139 strcpy(acpi_device_class(device), ASUS_HOTK_CLASS);
1140 device->driver_data = hotk;
1141 hotk->device = device;
1143 result = asus_hotk_check();
1150 * We install the handler, it will receive the hotk in parameter, so, we
1151 * could add other data to the hotk struct
1153 status = acpi_install_notify_handler(hotk->handle, ACPI_ALL_NOTIFY,
1154 asus_hotk_notify, hotk);
1155 if (ACPI_FAILURE(status))
1156 printk(ASUS_ERR "Error installing notify handler\n");
1158 asus_hotk_found = 1;
1160 /* WLED and BLED are on by default */
1161 write_status(bt_switch_handle, 1, BT_ON);
1162 write_status(wl_switch_handle, 1, WL_ON);
1164 /* If the h/w switch is off, we need to check the real status */
1165 write_status(NULL, read_status(BT_ON), BT_ON);
1166 write_status(NULL, read_status(WL_ON), WL_ON);
1168 /* LCD Backlight is on by default */
1169 write_status(NULL, 1, LCD_ON);
1171 /* LED display is off by default */
1172 hotk->ledd_status = 0xFFF;
1174 /* Set initial values of light sensor and level */
1175 hotk->light_switch = 1; /* Default to light sensor disabled */
1176 hotk->light_level = 0; /* level 5 for sensor sensitivity */
1178 if (ls_switch_handle)
1179 set_light_sens_switch(hotk->light_switch);
1181 if (ls_level_handle)
1182 set_light_sens_level(hotk->light_level);
1184 /* GPS is on by default */
1185 write_status(NULL, 1, GPS_ON);
1196 static int asus_hotk_remove(struct acpi_device *device, int type)
1198 acpi_status status = 0;
1200 if (!device || !acpi_driver_data(device))
1203 status = acpi_remove_notify_handler(hotk->handle, ACPI_ALL_NOTIFY,
1205 if (ACPI_FAILURE(status))
1206 printk(ASUS_ERR "Error removing notify handler\n");
1214 static void asus_backlight_exit(void)
1216 if (asus_backlight_device)
1217 backlight_device_unregister(asus_backlight_device);
1220 #define ASUS_LED_UNREGISTER(object) \
1221 if (object##_led.dev) \
1222 led_classdev_unregister(&object##_led)
1224 static void asus_led_exit(void)
1226 destroy_workqueue(led_workqueue);
1227 ASUS_LED_UNREGISTER(mled);
1228 ASUS_LED_UNREGISTER(tled);
1229 ASUS_LED_UNREGISTER(pled);
1230 ASUS_LED_UNREGISTER(rled);
1231 ASUS_LED_UNREGISTER(gled);
1234 static void asus_input_exit(void)
1237 input_unregister_device(hotk->inputdev);
1240 static void __exit asus_laptop_exit(void)
1242 asus_backlight_exit();
1246 acpi_bus_unregister_driver(&asus_hotk_driver);
1247 sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group);
1248 platform_device_unregister(asuspf_device);
1249 platform_driver_unregister(&asuspf_driver);
1252 static int asus_backlight_init(struct device *dev)
1254 struct backlight_device *bd;
1256 if (brightness_set_handle && lcd_switch_handle) {
1257 bd = backlight_device_register(ASUS_HOTK_FILE, dev,
1261 "Could not register asus backlight device\n");
1262 asus_backlight_device = NULL;
1266 asus_backlight_device = bd;
1268 bd->props.max_brightness = 15;
1269 bd->props.brightness = read_brightness(NULL);
1270 bd->props.power = FB_BLANK_UNBLANK;
1271 backlight_update_status(bd);
1276 static int asus_led_register(acpi_handle handle,
1277 struct led_classdev *ldev, struct device *dev)
1282 return led_classdev_register(dev, ldev);
1285 #define ASUS_LED_REGISTER(object, device) \
1286 asus_led_register(object##_set_handle, &object##_led, device)
1288 static int asus_led_init(struct device *dev)
1292 rv = ASUS_LED_REGISTER(mled, dev);
1296 rv = ASUS_LED_REGISTER(tled, dev);
1300 rv = ASUS_LED_REGISTER(rled, dev);
1304 rv = ASUS_LED_REGISTER(pled, dev);
1308 rv = ASUS_LED_REGISTER(gled, dev);
1312 led_workqueue = create_singlethread_workqueue("led_workqueue");
1319 ASUS_LED_UNREGISTER(gled);
1321 ASUS_LED_UNREGISTER(pled);
1323 ASUS_LED_UNREGISTER(rled);
1325 ASUS_LED_UNREGISTER(tled);
1327 ASUS_LED_UNREGISTER(mled);
1332 static int __init asus_laptop_init(void)
1340 result = acpi_bus_register_driver(&asus_hotk_driver);
1345 * This is a bit of a kludge. We only want this module loaded
1346 * for ASUS systems, but there's currently no way to probe the
1347 * ACPI namespace for ASUS HIDs. So we just return failure if
1348 * we didn't find one, which will cause the module to be
1351 if (!asus_hotk_found) {
1352 acpi_bus_unregister_driver(&asus_hotk_driver);
1356 dev = acpi_get_physical_device(hotk->device->handle);
1358 if (!acpi_video_backlight_support()) {
1359 result = asus_backlight_init(dev);
1361 goto fail_backlight;
1363 printk(ASUS_INFO "Brightness ignored, must be controlled by "
1364 "ACPI video driver\n");
1366 result = asus_input_init();
1370 result = asus_led_init(dev);
1374 /* Register platform stuff */
1375 result = platform_driver_register(&asuspf_driver);
1377 goto fail_platform_driver;
1379 asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1);
1380 if (!asuspf_device) {
1382 goto fail_platform_device1;
1385 result = platform_device_add(asuspf_device);
1387 goto fail_platform_device2;
1389 result = sysfs_create_group(&asuspf_device->dev.kobj,
1390 &asuspf_attribute_group);
1397 platform_device_del(asuspf_device);
1399 fail_platform_device2:
1400 platform_device_put(asuspf_device);
1402 fail_platform_device1:
1403 platform_driver_unregister(&asuspf_driver);
1405 fail_platform_driver:
1412 asus_backlight_exit();
1419 module_init(asus_laptop_init);
1420 module_exit(asus_laptop_exit);