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_HOTK_NAME "Asus Laptop Support"
56 #define ASUS_HOTK_CLASS "hotkey"
57 #define ASUS_HOTK_DEVICE_NAME "Hotkey"
58 #define ASUS_HOTK_FILE KBUILD_MODNAME
59 #define ASUS_HOTK_PREFIX "\\_SB.ATKD."
63 * Some events we use, same for all Asus
65 #define ATKD_BR_UP 0x10
66 #define ATKD_BR_DOWN 0x20
67 #define ATKD_LCD_ON 0x33
68 #define ATKD_LCD_OFF 0x34
71 * Known bits returned by \_SB.ATKD.HWRS
77 * Flags for hotk status
78 * WL_ON and BT_ON are also used for wireless_status()
80 #define WL_ON 0x01 /* internal Wifi */
81 #define BT_ON 0x02 /* internal Bluetooth */
82 #define MLED_ON 0x04 /* mail LED */
83 #define TLED_ON 0x08 /* touchpad LED */
84 #define RLED_ON 0x10 /* Record LED */
85 #define PLED_ON 0x20 /* Phone LED */
86 #define GLED_ON 0x40 /* Gaming LED */
87 #define LCD_ON 0x80 /* LCD backlight */
88 #define GPS_ON 0x100 /* GPS */
89 #define KEY_ON 0x200 /* Keyboard backlight */
91 #define ASUS_LOG ASUS_HOTK_FILE ": "
92 #define ASUS_ERR KERN_ERR ASUS_LOG
93 #define ASUS_WARNING KERN_WARNING ASUS_LOG
94 #define ASUS_NOTICE KERN_NOTICE ASUS_LOG
95 #define ASUS_INFO KERN_INFO ASUS_LOG
96 #define ASUS_DEBUG KERN_DEBUG ASUS_LOG
98 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
99 MODULE_DESCRIPTION(ASUS_HOTK_NAME);
100 MODULE_LICENSE("GPL");
103 * WAPF defines the behavior of the Fn+Fx wlan key
104 * The significance of values is yet to be found, but
106 * 0x0 will do nothing
107 * 0x1 will allow to control the device with Fn+Fx key.
108 * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key
109 * 0x5 like 0x1 or 0x4
110 * So, if something doesn't work as you want, just try other values =)
112 static uint wapf = 1;
113 module_param(wapf, uint, 0644);
114 MODULE_PARM_DESC(wapf, "WAPF value");
116 #define ASUS_HANDLE(object, paths...) \
117 static acpi_handle object##_handle = NULL; \
118 static char *object##_paths[] = { paths }
121 ASUS_HANDLE(mled_set, ASUS_HOTK_PREFIX "MLED");
122 ASUS_HANDLE(tled_set, ASUS_HOTK_PREFIX "TLED");
123 ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED"); /* W1JC */
124 ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED"); /* A7J */
125 ASUS_HANDLE(gled_set, ASUS_HOTK_PREFIX "GLED"); /* G1, G2 (probably) */
128 ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "SLCM");
132 * WLED and BLED are not handled like other XLED, because in some dsdt
133 * they also control the WLAN/Bluetooth device.
135 ASUS_HANDLE(wl_switch, ASUS_HOTK_PREFIX "WLED");
136 ASUS_HANDLE(bt_switch, ASUS_HOTK_PREFIX "BLED");
137 ASUS_HANDLE(wireless_status, ASUS_HOTK_PREFIX "RSTS"); /* All new models */
140 ASUS_HANDLE(brightness_set, ASUS_HOTK_PREFIX "SPLV");
141 ASUS_HANDLE(brightness_get, ASUS_HOTK_PREFIX "GPLV");
144 ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */
145 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */
146 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */
147 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */
148 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */
149 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */
150 "\\_SB.PCI0.PX40.Q10", /* S1x */
151 "\\Q10"); /* A2x, L2D, L3D, M2E */
154 ASUS_HANDLE(display_set, ASUS_HOTK_PREFIX "SDSP");
155 ASUS_HANDLE(display_get,
156 /* A6B, A6K A6R A7D F3JM L4R M6R A3G M6A M6V VX-1 V6J V6V W3Z */
157 "\\_SB.PCI0.P0P1.VGA.GETD",
158 /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V S5A M5A z33A W1Jc W2V G1 */
159 "\\_SB.PCI0.P0P2.VGA.GETD",
161 "\\_SB.PCI0.P0P3.VGA.GETD",
163 "\\_SB.PCI0.P0PA.VGA.GETD",
165 "\\_SB.PCI0.PCI1.VGAC.NMAP",
167 "\\_SB.PCI0.VGA.GETD",
170 /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */
174 /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */
176 /* A3F A6F A3N A3L M6N W3N W6A */
179 ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */
180 ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */
183 /* R2H use different handle for GPS on/off */
184 ASUS_HANDLE(gps_on, ASUS_HOTK_PREFIX "SDON"); /* R2H */
185 ASUS_HANDLE(gps_off, ASUS_HOTK_PREFIX "SDOF"); /* R2H */
186 ASUS_HANDLE(gps_status, ASUS_HOTK_PREFIX "GPST");
189 ASUS_HANDLE(kled_set, ASUS_HOTK_PREFIX "SLKB");
190 ASUS_HANDLE(kled_get, ASUS_HOTK_PREFIX "GLKB");
193 * This is the main structure, we can use it to store anything interesting
194 * about the hotk device
197 char *name; /* laptop name */
198 struct acpi_device *device; /* the device we are in */
199 acpi_handle handle; /* the handle of the hotk device */
200 char status; /* status of the hotk, for LEDs, ... */
201 u32 ledd_status; /* status of the LED display */
202 u8 light_level; /* light sensor level */
203 u8 light_switch; /* light sensor switch value */
204 u16 event_count[128]; /* count for each event TODO make this better */
205 struct input_dev *inputdev;
210 * This header is made available to allow proper configuration given model,
211 * revision number , ... this info cannot go in struct asus_hotk because it is
212 * available before the hotk
214 static struct acpi_table_header *asus_info;
216 /* The actual device the driver binds to */
217 static struct asus_hotk *hotk;
220 * The hotkey driver declaration
222 static const struct acpi_device_id asus_device_ids[] = {
227 MODULE_DEVICE_TABLE(acpi, asus_device_ids);
229 static int asus_hotk_add(struct acpi_device *device);
230 static int asus_hotk_remove(struct acpi_device *device, int type);
231 static void asus_hotk_notify(struct acpi_device *device, u32 event);
233 static struct acpi_driver asus_hotk_driver = {
234 .name = ASUS_HOTK_NAME,
235 .class = ASUS_HOTK_CLASS,
236 .owner = THIS_MODULE,
237 .ids = asus_device_ids,
238 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
240 .add = asus_hotk_add,
241 .remove = asus_hotk_remove,
242 .notify = asus_hotk_notify,
246 /* The backlight device /sys/class/backlight */
247 static struct backlight_device *asus_backlight_device;
250 * The backlight class declaration
252 static int read_brightness(struct backlight_device *bd);
253 static int update_bl_status(struct backlight_device *bd);
254 static struct backlight_ops asusbl_ops = {
255 .get_brightness = read_brightness,
256 .update_status = update_bl_status,
260 * These functions actually update the LED's, and are called from a
261 * workqueue. By doing this as separate work rather than when the LED
262 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
263 * potentially bad time, such as a timer interrupt.
265 static struct workqueue_struct *led_workqueue;
267 #define ASUS_LED(object, ledname, max) \
268 static void object##_led_set(struct led_classdev *led_cdev, \
269 enum led_brightness value); \
270 static enum led_brightness object##_led_get( \
271 struct led_classdev *led_cdev); \
272 static void object##_led_update(struct work_struct *ignored); \
273 static int object##_led_wk; \
274 static DECLARE_WORK(object##_led_work, object##_led_update); \
275 static struct led_classdev object##_led = { \
276 .name = "asus::" ledname, \
277 .brightness_set = object##_led_set, \
278 .brightness_get = object##_led_get, \
279 .max_brightness = max \
282 ASUS_LED(mled, "mail", 1);
283 ASUS_LED(tled, "touchpad", 1);
284 ASUS_LED(rled, "record", 1);
285 ASUS_LED(pled, "phone", 1);
286 ASUS_LED(gled, "gaming", 1);
287 ASUS_LED(kled, "kbd_backlight", 3);
295 enum { KE_KEY, KE_END };
297 static struct key_entry asus_keymap[] = {
298 {KE_KEY, 0x02, KEY_SCREENLOCK},
299 {KE_KEY, 0x05, KEY_WLAN},
300 {KE_KEY, 0x08, KEY_F13},
301 {KE_KEY, 0x17, KEY_ZOOM},
302 {KE_KEY, 0x1f, KEY_BATTERY},
303 {KE_KEY, 0x30, KEY_VOLUMEUP},
304 {KE_KEY, 0x31, KEY_VOLUMEDOWN},
305 {KE_KEY, 0x32, KEY_MUTE},
306 {KE_KEY, 0x33, KEY_SWITCHVIDEOMODE},
307 {KE_KEY, 0x34, KEY_SWITCHVIDEOMODE},
308 {KE_KEY, 0x40, KEY_PREVIOUSSONG},
309 {KE_KEY, 0x41, KEY_NEXTSONG},
310 {KE_KEY, 0x43, KEY_STOPCD},
311 {KE_KEY, 0x45, KEY_PLAYPAUSE},
312 {KE_KEY, 0x4c, KEY_MEDIA},
313 {KE_KEY, 0x50, KEY_EMAIL},
314 {KE_KEY, 0x51, KEY_WWW},
315 {KE_KEY, 0x55, KEY_CALC},
316 {KE_KEY, 0x5C, KEY_SCREENLOCK}, /* Screenlock */
317 {KE_KEY, 0x5D, KEY_WLAN},
318 {KE_KEY, 0x5E, KEY_WLAN},
319 {KE_KEY, 0x5F, KEY_WLAN},
320 {KE_KEY, 0x60, KEY_SWITCHVIDEOMODE},
321 {KE_KEY, 0x61, KEY_SWITCHVIDEOMODE},
322 {KE_KEY, 0x62, KEY_SWITCHVIDEOMODE},
323 {KE_KEY, 0x63, KEY_SWITCHVIDEOMODE},
324 {KE_KEY, 0x6B, KEY_F13}, /* Lock Touchpad */
325 {KE_KEY, 0x82, KEY_CAMERA},
326 {KE_KEY, 0x88, KEY_WLAN },
327 {KE_KEY, 0x8A, KEY_PROG1},
328 {KE_KEY, 0x95, KEY_MEDIA},
329 {KE_KEY, 0x99, KEY_PHONE},
330 {KE_KEY, 0xc4, KEY_KBDILLUMUP},
331 {KE_KEY, 0xc5, KEY_KBDILLUMDOWN},
336 * This function evaluates an ACPI method, given an int as parameter, the
337 * method is searched within the scope of the handle, can be NULL. The output
338 * of the method is written is output, which can also be NULL
340 * returns 0 if write is successful, -1 else.
342 static int write_acpi_int(acpi_handle handle, const char *method, int val,
343 struct acpi_buffer *output)
345 struct acpi_object_list params; /* list of input parameters (an int) */
346 union acpi_object in_obj; /* the only param we use */
353 params.pointer = &in_obj;
354 in_obj.type = ACPI_TYPE_INTEGER;
355 in_obj.integer.value = val;
357 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
364 static int read_wireless_status(int mask)
366 unsigned long long status;
367 acpi_status rv = AE_OK;
369 if (!wireless_status_handle)
370 return (hotk->status & mask) ? 1 : 0;
372 rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status);
373 if (ACPI_FAILURE(rv))
374 pr_warning("Error reading Wireless status\n");
376 return (status & mask) ? 1 : 0;
378 return (hotk->status & mask) ? 1 : 0;
381 static int read_gps_status(void)
383 unsigned long long status;
384 acpi_status rv = AE_OK;
386 rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status);
387 if (ACPI_FAILURE(rv))
388 pr_warning("Error reading GPS status\n");
390 return status ? 1 : 0;
392 return (hotk->status & GPS_ON) ? 1 : 0;
395 /* Generic LED functions */
396 static int read_status(int mask)
398 /* There is a special method for both wireless devices */
399 if (mask == BT_ON || mask == WL_ON)
400 return read_wireless_status(mask);
401 else if (mask == GPS_ON)
402 return read_gps_status();
404 return (hotk->status & mask) ? 1 : 0;
407 static void write_status(acpi_handle handle, int out, int mask)
409 hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask);
416 out = (out & 0x1) + 1;
419 handle = (out) ? gps_on_handle : gps_off_handle;
427 if (write_acpi_int(handle, NULL, out, NULL))
428 pr_warning(" write failed %x\n", mask);
431 /* /sys/class/led handlers */
432 #define ASUS_LED_HANDLER(object, mask) \
433 static void object##_led_set(struct led_classdev *led_cdev, \
434 enum led_brightness value) \
436 object##_led_wk = (value > 0) ? 1 : 0; \
437 queue_work(led_workqueue, &object##_led_work); \
439 static void object##_led_update(struct work_struct *ignored) \
441 int value = object##_led_wk; \
442 write_status(object##_set_handle, value, (mask)); \
444 static enum led_brightness object##_led_get( \
445 struct led_classdev *led_cdev) \
447 return led_cdev->brightness; \
450 ASUS_LED_HANDLER(mled, MLED_ON);
451 ASUS_LED_HANDLER(pled, PLED_ON);
452 ASUS_LED_HANDLER(rled, RLED_ON);
453 ASUS_LED_HANDLER(tled, TLED_ON);
454 ASUS_LED_HANDLER(gled, GLED_ON);
459 static int get_kled_lvl(void)
461 unsigned long long kblv;
462 struct acpi_object_list params;
463 union acpi_object in_obj;
467 params.pointer = &in_obj;
468 in_obj.type = ACPI_TYPE_INTEGER;
469 in_obj.integer.value = 2;
471 rv = acpi_evaluate_integer(kled_get_handle, NULL, ¶ms, &kblv);
472 if (ACPI_FAILURE(rv)) {
473 pr_warning("Error reading kled level\n");
479 static int set_kled_lvl(int kblv)
482 kblv = (1 << 7) | (kblv & 0x7F);
486 if (write_acpi_int(kled_set_handle, NULL, kblv, NULL)) {
487 pr_warning("Keyboard LED display write failed\n");
493 static void kled_led_set(struct led_classdev *led_cdev,
494 enum led_brightness value)
497 queue_work(led_workqueue, &kled_led_work);
500 static void kled_led_update(struct work_struct *ignored)
502 set_kled_lvl(kled_led_wk);
505 static enum led_brightness kled_led_get(struct led_classdev *led_cdev)
507 return get_kled_lvl();
510 static int get_lcd_state(void)
512 return read_status(LCD_ON);
515 static int set_lcd_state(int value)
518 acpi_status status = 0;
522 if (lcd == get_lcd_state())
525 if (lcd_switch_handle) {
526 status = acpi_evaluate_object(lcd_switch_handle,
529 if (ACPI_FAILURE(status))
530 pr_warning("Error switching LCD\n");
533 write_status(NULL, lcd, LCD_ON);
537 static void lcd_blank(int blank)
539 struct backlight_device *bd = asus_backlight_device;
542 bd->props.power = blank;
543 backlight_update_status(bd);
547 static int read_brightness(struct backlight_device *bd)
549 unsigned long long value;
550 acpi_status rv = AE_OK;
552 rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value);
553 if (ACPI_FAILURE(rv))
554 pr_warning("Error reading brightness\n");
559 static int set_brightness(struct backlight_device *bd, int value)
563 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
564 /* 0 <= value <= 15 */
566 if (write_acpi_int(brightness_set_handle, NULL, value, NULL)) {
567 pr_warning("Error changing brightness\n");
574 static int update_bl_status(struct backlight_device *bd)
577 int value = bd->props.brightness;
579 rv = set_brightness(bd, value);
583 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0;
584 return set_lcd_state(value);
588 * Platform device handlers
592 * We write our info in page, we begin at offset off and cannot write more
593 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
594 * number of bytes written in page
596 static ssize_t show_infos(struct device *dev,
597 struct device_attribute *attr, char *page)
600 unsigned long long temp;
601 char buf[16]; /* enough for all info */
602 acpi_status rv = AE_OK;
605 * We use the easy way, we don't care of off and count, so we don't set eof
609 len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n");
610 len += sprintf(page + len, "Model reference : %s\n", hotk->name);
612 * The SFUN method probably allows the original driver to get the list
613 * of features supported by a given model. For now, 0x0100 or 0x0800
614 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
615 * The significance of others is yet to be found.
617 rv = acpi_evaluate_integer(hotk->handle, "SFUN", NULL, &temp);
618 if (!ACPI_FAILURE(rv))
619 len += sprintf(page + len, "SFUN value : %#x\n",
622 * The HWRS method return informations about the hardware.
623 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
624 * The significance of others is yet to be found.
625 * If we don't find the method, we assume the device are present.
627 rv = acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &temp);
628 if (!ACPI_FAILURE(rv))
629 len += sprintf(page + len, "HRWS value : %#x\n",
632 * Another value for userspace: the ASYM method returns 0x02 for
633 * battery low and 0x04 for battery critical, its readings tend to be
634 * more accurate than those provided by _BST.
635 * Note: since not all the laptops provide this method, errors are
638 rv = acpi_evaluate_integer(hotk->handle, "ASYM", NULL, &temp);
639 if (!ACPI_FAILURE(rv))
640 len += sprintf(page + len, "ASYM value : %#x\n",
643 snprintf(buf, 16, "%d", asus_info->length);
644 len += sprintf(page + len, "DSDT length : %s\n", buf);
645 snprintf(buf, 16, "%d", asus_info->checksum);
646 len += sprintf(page + len, "DSDT checksum : %s\n", buf);
647 snprintf(buf, 16, "%d", asus_info->revision);
648 len += sprintf(page + len, "DSDT revision : %s\n", buf);
649 snprintf(buf, 7, "%s", asus_info->oem_id);
650 len += sprintf(page + len, "OEM id : %s\n", buf);
651 snprintf(buf, 9, "%s", asus_info->oem_table_id);
652 len += sprintf(page + len, "OEM table id : %s\n", buf);
653 snprintf(buf, 16, "%x", asus_info->oem_revision);
654 len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
655 snprintf(buf, 5, "%s", asus_info->asl_compiler_id);
656 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
657 snprintf(buf, 16, "%x", asus_info->asl_compiler_revision);
658 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
664 static int parse_arg(const char *buf, unsigned long count, int *val)
670 if (sscanf(buf, "%i", val) != 1)
675 static ssize_t store_status(const char *buf, size_t count,
676 acpi_handle handle, int mask)
681 rv = parse_arg(buf, count, &value);
685 write_status(handle, out, mask);
693 static ssize_t show_ledd(struct device *dev,
694 struct device_attribute *attr, char *buf)
696 return sprintf(buf, "0x%08x\n", hotk->ledd_status);
699 static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
700 const char *buf, size_t count)
704 rv = parse_arg(buf, count, &value);
706 if (write_acpi_int(ledd_set_handle, NULL, value, NULL))
707 pr_warning("LED display write failed\n");
709 hotk->ledd_status = (u32) value;
717 static ssize_t show_wlan(struct device *dev,
718 struct device_attribute *attr, char *buf)
720 return sprintf(buf, "%d\n", read_status(WL_ON));
723 static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
724 const char *buf, size_t count)
726 return store_status(buf, count, wl_switch_handle, WL_ON);
732 static ssize_t show_bluetooth(struct device *dev,
733 struct device_attribute *attr, char *buf)
735 return sprintf(buf, "%d\n", read_status(BT_ON));
738 static ssize_t store_bluetooth(struct device *dev,
739 struct device_attribute *attr, const char *buf,
742 return store_status(buf, count, bt_switch_handle, BT_ON);
748 static void set_display(int value)
750 /* no sanity check needed for now */
751 if (write_acpi_int(display_set_handle, NULL, value, NULL))
752 pr_warning("Error setting display\n");
756 static int read_display(void)
758 unsigned long long value = 0;
759 acpi_status rv = AE_OK;
762 * In most of the case, we know how to set the display, but sometime
765 if (display_get_handle) {
766 rv = acpi_evaluate_integer(display_get_handle, NULL,
768 if (ACPI_FAILURE(rv))
769 pr_warning("Error reading display status\n");
772 value &= 0x0F; /* needed for some models, shouldn't hurt others */
778 * Now, *this* one could be more user-friendly, but so far, no-one has
779 * complained. The significance of bits is the same as in store_disp()
781 static ssize_t show_disp(struct device *dev,
782 struct device_attribute *attr, char *buf)
784 return sprintf(buf, "%d\n", read_display());
788 * Experimental support for display switching. As of now: 1 should activate
789 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
790 * Any combination (bitwise) of these will suffice. I never actually tested 4
791 * displays hooked up simultaneously, so be warned. See the acpi4asus README
794 static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
795 const char *buf, size_t count)
799 rv = parse_arg(buf, count, &value);
808 static void set_light_sens_switch(int value)
810 if (write_acpi_int(ls_switch_handle, NULL, value, NULL))
811 pr_warning("Error setting light sensor switch\n");
812 hotk->light_switch = value;
815 static ssize_t show_lssw(struct device *dev,
816 struct device_attribute *attr, char *buf)
818 return sprintf(buf, "%d\n", hotk->light_switch);
821 static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
822 const char *buf, size_t count)
826 rv = parse_arg(buf, count, &value);
828 set_light_sens_switch(value ? 1 : 0);
833 static void set_light_sens_level(int value)
835 if (write_acpi_int(ls_level_handle, NULL, value, NULL))
836 pr_warning("Error setting light sensor level\n");
837 hotk->light_level = value;
840 static ssize_t show_lslvl(struct device *dev,
841 struct device_attribute *attr, char *buf)
843 return sprintf(buf, "%d\n", hotk->light_level);
846 static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
847 const char *buf, size_t count)
851 rv = parse_arg(buf, count, &value);
853 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
854 /* 0 <= value <= 15 */
855 set_light_sens_level(value);
864 static ssize_t show_gps(struct device *dev,
865 struct device_attribute *attr, char *buf)
867 return sprintf(buf, "%d\n", read_status(GPS_ON));
870 static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
871 const char *buf, size_t count)
873 return store_status(buf, count, NULL, GPS_ON);
879 static struct key_entry *asus_get_entry_by_scancode(int code)
881 struct key_entry *key;
883 for (key = asus_keymap; key->type != KE_END; key++)
884 if (code == key->code)
890 static struct key_entry *asus_get_entry_by_keycode(int code)
892 struct key_entry *key;
894 for (key = asus_keymap; key->type != KE_END; key++)
895 if (code == key->keycode && key->type == KE_KEY)
901 static int asus_getkeycode(struct input_dev *dev, int scancode, int *keycode)
903 struct key_entry *key = asus_get_entry_by_scancode(scancode);
905 if (key && key->type == KE_KEY) {
906 *keycode = key->keycode;
913 static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode)
915 struct key_entry *key;
918 if (keycode < 0 || keycode > KEY_MAX)
921 key = asus_get_entry_by_scancode(scancode);
922 if (key && key->type == KE_KEY) {
923 old_keycode = key->keycode;
924 key->keycode = keycode;
925 set_bit(keycode, dev->keybit);
926 if (!asus_get_entry_by_keycode(old_keycode))
927 clear_bit(old_keycode, dev->keybit);
934 static void asus_hotk_notify(struct acpi_device *device, u32 event)
936 static struct key_entry *key;
939 /* TODO Find a better way to handle events count. */
944 * We need to tell the backlight device when the backlight power is
947 if (event == ATKD_LCD_ON) {
948 write_status(NULL, 1, LCD_ON);
949 lcd_blank(FB_BLANK_UNBLANK);
950 } else if (event == ATKD_LCD_OFF) {
951 write_status(NULL, 0, LCD_ON);
952 lcd_blank(FB_BLANK_POWERDOWN);
955 count = hotk->event_count[event % 128]++;
956 acpi_bus_generate_proc_event(hotk->device, event, count);
957 acpi_bus_generate_netlink_event(hotk->device->pnp.device_class,
958 dev_name(&hotk->device->dev), event,
961 if (hotk->inputdev) {
962 key = asus_get_entry_by_scancode(event);
968 input_report_key(hotk->inputdev, key->keycode, 1);
969 input_sync(hotk->inputdev);
970 input_report_key(hotk->inputdev, key->keycode, 0);
971 input_sync(hotk->inputdev);
977 #define ASUS_CREATE_DEVICE_ATTR(_name) \
978 struct device_attribute dev_attr_##_name = { \
980 .name = __stringify(_name), \
986 #define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \
988 dev_attr_##_name.attr.mode = _mode; \
989 dev_attr_##_name.show = _show; \
990 dev_attr_##_name.store = _store; \
993 static ASUS_CREATE_DEVICE_ATTR(infos);
994 static ASUS_CREATE_DEVICE_ATTR(wlan);
995 static ASUS_CREATE_DEVICE_ATTR(bluetooth);
996 static ASUS_CREATE_DEVICE_ATTR(display);
997 static ASUS_CREATE_DEVICE_ATTR(ledd);
998 static ASUS_CREATE_DEVICE_ATTR(ls_switch);
999 static ASUS_CREATE_DEVICE_ATTR(ls_level);
1000 static ASUS_CREATE_DEVICE_ATTR(gps);
1002 static struct attribute *asuspf_attributes[] = {
1003 &dev_attr_infos.attr,
1004 &dev_attr_wlan.attr,
1005 &dev_attr_bluetooth.attr,
1006 &dev_attr_display.attr,
1007 &dev_attr_ledd.attr,
1008 &dev_attr_ls_switch.attr,
1009 &dev_attr_ls_level.attr,
1014 static struct attribute_group asuspf_attribute_group = {
1015 .attrs = asuspf_attributes
1018 static struct platform_driver asuspf_driver = {
1020 .name = ASUS_HOTK_FILE,
1021 .owner = THIS_MODULE,
1025 static struct platform_device *asuspf_device;
1027 static void asus_hotk_add_fs(void)
1029 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL);
1031 if (wl_switch_handle)
1032 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan);
1034 if (bt_switch_handle)
1035 ASUS_SET_DEVICE_ATTR(bluetooth, 0644,
1036 show_bluetooth, store_bluetooth);
1038 if (display_set_handle && display_get_handle)
1039 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp);
1040 else if (display_set_handle)
1041 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp);
1043 if (ledd_set_handle)
1044 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);
1046 if (ls_switch_handle && ls_level_handle) {
1047 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);
1048 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);
1051 if (gps_status_handle && gps_on_handle && gps_off_handle)
1052 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps);
1055 static int asus_handle_init(char *name, acpi_handle * handle,
1056 char **paths, int num_paths)
1061 for (i = 0; i < num_paths; i++) {
1062 status = acpi_get_handle(NULL, paths[i], handle);
1063 if (ACPI_SUCCESS(status))
1071 #define ASUS_HANDLE_INIT(object) \
1072 asus_handle_init(#object, &object##_handle, object##_paths, \
1073 ARRAY_SIZE(object##_paths))
1076 * This function is used to initialize the hotk with right values. In this
1077 * method, we can make all the detection we want, and modify the hotk struct
1079 static int asus_hotk_get_info(void)
1081 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1082 union acpi_object *model = NULL;
1083 unsigned long long bsts_result, hwrs_result;
1084 char *string = NULL;
1088 * Get DSDT headers early enough to allow for differentiating between
1089 * models, but late enough to allow acpi_bus_register_driver() to fail
1090 * before doing anything ACPI-specific. Should we encounter a machine,
1091 * which needs special handling (i.e. its hotkey device has a different
1092 * HID), this bit will be moved. A global variable asus_info contains
1095 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus_info);
1096 if (ACPI_FAILURE(status))
1097 pr_warning("Couldn't get the DSDT table header\n");
1099 /* We have to write 0 on init this far for all ASUS models */
1100 if (write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
1101 pr_err("Hotkey initialization failed\n");
1105 /* This needs to be called for some laptops to init properly */
1107 acpi_evaluate_integer(hotk->handle, "BSTS", NULL, &bsts_result);
1108 if (ACPI_FAILURE(status))
1109 pr_warning("Error calling BSTS\n");
1110 else if (bsts_result)
1111 pr_notice("BSTS called, 0x%02x returned\n",
1112 (uint) bsts_result);
1115 write_acpi_int(hotk->handle, "CWAP", wapf, NULL);
1118 * Try to match the object returned by INIT to the specific model.
1119 * Handle every possible object (or the lack of thereof) the DSDT
1120 * writers might throw at us. When in trouble, we pass NULL to
1121 * asus_model_match() and try something completely different.
1123 if (buffer.pointer) {
1124 model = buffer.pointer;
1125 switch (model->type) {
1126 case ACPI_TYPE_STRING:
1127 string = model->string.pointer;
1129 case ACPI_TYPE_BUFFER:
1130 string = model->buffer.pointer;
1137 hotk->name = kstrdup(string, GFP_KERNEL);
1142 pr_notice(" %s model detected\n", string);
1144 ASUS_HANDLE_INIT(mled_set);
1145 ASUS_HANDLE_INIT(tled_set);
1146 ASUS_HANDLE_INIT(rled_set);
1147 ASUS_HANDLE_INIT(pled_set);
1148 ASUS_HANDLE_INIT(gled_set);
1150 ASUS_HANDLE_INIT(ledd_set);
1152 ASUS_HANDLE_INIT(kled_set);
1153 ASUS_HANDLE_INIT(kled_get);
1156 * The HWRS method return informations about the hardware.
1157 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
1158 * The significance of others is yet to be found.
1159 * If we don't find the method, we assume the device are present.
1162 acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &hwrs_result);
1163 if (ACPI_FAILURE(status))
1164 hwrs_result = WL_HWRS | BT_HWRS;
1166 if (hwrs_result & WL_HWRS)
1167 ASUS_HANDLE_INIT(wl_switch);
1168 if (hwrs_result & BT_HWRS)
1169 ASUS_HANDLE_INIT(bt_switch);
1171 ASUS_HANDLE_INIT(wireless_status);
1173 ASUS_HANDLE_INIT(brightness_set);
1174 ASUS_HANDLE_INIT(brightness_get);
1176 ASUS_HANDLE_INIT(lcd_switch);
1178 ASUS_HANDLE_INIT(display_set);
1179 ASUS_HANDLE_INIT(display_get);
1182 * There is a lot of models with "ALSL", but a few get
1183 * a real light sens, so we need to check it.
1185 if (!ASUS_HANDLE_INIT(ls_switch))
1186 ASUS_HANDLE_INIT(ls_level);
1188 ASUS_HANDLE_INIT(gps_on);
1189 ASUS_HANDLE_INIT(gps_off);
1190 ASUS_HANDLE_INIT(gps_status);
1197 static int asus_input_init(void)
1199 const struct key_entry *key;
1202 hotk->inputdev = input_allocate_device();
1203 if (!hotk->inputdev) {
1204 pr_info("Unable to allocate input device\n");
1207 hotk->inputdev->name = "Asus Laptop extra buttons";
1208 hotk->inputdev->phys = ASUS_HOTK_FILE "/input0";
1209 hotk->inputdev->id.bustype = BUS_HOST;
1210 hotk->inputdev->getkeycode = asus_getkeycode;
1211 hotk->inputdev->setkeycode = asus_setkeycode;
1213 for (key = asus_keymap; key->type != KE_END; key++) {
1214 switch (key->type) {
1216 set_bit(EV_KEY, hotk->inputdev->evbit);
1217 set_bit(key->keycode, hotk->inputdev->keybit);
1221 result = input_register_device(hotk->inputdev);
1223 pr_info("Unable to register input device\n");
1224 input_free_device(hotk->inputdev);
1229 static int asus_hotk_check(void)
1233 result = acpi_bus_get_status(hotk->device);
1237 if (hotk->device->status.present) {
1238 result = asus_hotk_get_info();
1240 pr_err("Hotkey device not present, aborting\n");
1247 static int asus_hotk_found;
1249 static int asus_hotk_add(struct acpi_device *device)
1253 pr_notice("Asus Laptop Support version %s\n",
1254 ASUS_LAPTOP_VERSION);
1256 hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL);
1260 hotk->handle = device->handle;
1261 strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME);
1262 strcpy(acpi_device_class(device), ASUS_HOTK_CLASS);
1263 device->driver_data = hotk;
1264 hotk->device = device;
1266 result = asus_hotk_check();
1272 asus_hotk_found = 1;
1274 /* WLED and BLED are on by default */
1275 write_status(bt_switch_handle, 1, BT_ON);
1276 write_status(wl_switch_handle, 1, WL_ON);
1278 /* If the h/w switch is off, we need to check the real status */
1279 write_status(NULL, read_status(BT_ON), BT_ON);
1280 write_status(NULL, read_status(WL_ON), WL_ON);
1282 /* LCD Backlight is on by default */
1283 write_status(NULL, 1, LCD_ON);
1285 /* Keyboard Backlight is on by default */
1286 if (kled_set_handle)
1289 /* LED display is off by default */
1290 hotk->ledd_status = 0xFFF;
1292 /* Set initial values of light sensor and level */
1293 hotk->light_switch = 0; /* Default to light sensor disabled */
1294 hotk->light_level = 5; /* level 5 for sensor sensitivity */
1296 if (ls_switch_handle)
1297 set_light_sens_switch(hotk->light_switch);
1299 if (ls_level_handle)
1300 set_light_sens_level(hotk->light_level);
1302 /* GPS is on by default */
1303 write_status(NULL, 1, GPS_ON);
1314 static int asus_hotk_remove(struct acpi_device *device, int type)
1322 static void asus_backlight_exit(void)
1324 if (asus_backlight_device)
1325 backlight_device_unregister(asus_backlight_device);
1328 #define ASUS_LED_UNREGISTER(object) \
1329 if (object##_led.dev) \
1330 led_classdev_unregister(&object##_led)
1332 static void asus_led_exit(void)
1334 destroy_workqueue(led_workqueue);
1335 ASUS_LED_UNREGISTER(mled);
1336 ASUS_LED_UNREGISTER(tled);
1337 ASUS_LED_UNREGISTER(pled);
1338 ASUS_LED_UNREGISTER(rled);
1339 ASUS_LED_UNREGISTER(gled);
1340 ASUS_LED_UNREGISTER(kled);
1343 static void asus_input_exit(void)
1346 input_unregister_device(hotk->inputdev);
1349 static void __exit asus_laptop_exit(void)
1351 asus_backlight_exit();
1355 acpi_bus_unregister_driver(&asus_hotk_driver);
1356 sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group);
1357 platform_device_unregister(asuspf_device);
1358 platform_driver_unregister(&asuspf_driver);
1361 static int asus_backlight_init(struct device *dev)
1363 struct backlight_device *bd;
1365 if (brightness_set_handle && lcd_switch_handle) {
1366 bd = backlight_device_register(ASUS_HOTK_FILE, dev,
1369 pr_err("Could not register asus backlight device\n");
1370 asus_backlight_device = NULL;
1374 asus_backlight_device = bd;
1376 bd->props.max_brightness = 15;
1377 bd->props.brightness = read_brightness(NULL);
1378 bd->props.power = FB_BLANK_UNBLANK;
1379 backlight_update_status(bd);
1384 static int asus_led_register(acpi_handle handle,
1385 struct led_classdev *ldev, struct device *dev)
1390 return led_classdev_register(dev, ldev);
1393 #define ASUS_LED_REGISTER(object, device) \
1394 asus_led_register(object##_set_handle, &object##_led, device)
1396 static int asus_led_init(struct device *dev)
1400 rv = ASUS_LED_REGISTER(mled, dev);
1404 rv = ASUS_LED_REGISTER(tled, dev);
1408 rv = ASUS_LED_REGISTER(rled, dev);
1412 rv = ASUS_LED_REGISTER(pled, dev);
1416 rv = ASUS_LED_REGISTER(gled, dev);
1420 if (kled_set_handle && kled_get_handle)
1421 rv = ASUS_LED_REGISTER(kled, dev);
1425 led_workqueue = create_singlethread_workqueue("led_workqueue");
1432 ASUS_LED_UNREGISTER(kled);
1434 ASUS_LED_UNREGISTER(gled);
1436 ASUS_LED_UNREGISTER(pled);
1438 ASUS_LED_UNREGISTER(rled);
1440 ASUS_LED_UNREGISTER(tled);
1442 ASUS_LED_UNREGISTER(mled);
1447 static int __init asus_laptop_init(void)
1451 result = acpi_bus_register_driver(&asus_hotk_driver);
1456 * This is a bit of a kludge. We only want this module loaded
1457 * for ASUS systems, but there's currently no way to probe the
1458 * ACPI namespace for ASUS HIDs. So we just return failure if
1459 * we didn't find one, which will cause the module to be
1462 if (!asus_hotk_found) {
1463 acpi_bus_unregister_driver(&asus_hotk_driver);
1467 result = asus_input_init();
1471 /* Register platform stuff */
1472 result = platform_driver_register(&asuspf_driver);
1474 goto fail_platform_driver;
1476 asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1);
1477 if (!asuspf_device) {
1479 goto fail_platform_device1;
1482 result = platform_device_add(asuspf_device);
1484 goto fail_platform_device2;
1486 result = sysfs_create_group(&asuspf_device->dev.kobj,
1487 &asuspf_attribute_group);
1491 result = asus_led_init(&asuspf_device->dev);
1495 if (!acpi_video_backlight_support()) {
1496 result = asus_backlight_init(&asuspf_device->dev);
1498 goto fail_backlight;
1500 pr_info("Brightness ignored, must be controlled by "
1501 "ACPI video driver\n");
1509 sysfs_remove_group(&asuspf_device->dev.kobj,
1510 &asuspf_attribute_group);
1513 platform_device_del(asuspf_device);
1515 fail_platform_device2:
1516 platform_device_put(asuspf_device);
1518 fail_platform_device1:
1519 platform_driver_unregister(&asuspf_driver);
1521 fail_platform_driver:
1529 module_init(asus_laptop_init);
1530 module_exit(asus_laptop_exit);