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asus-laptop: rename wireless_status to wlan_status to avoid confusion
[deliverable/linux.git] / drivers / platform / x86 / asus-laptop.c
1 /*
2 * asus-laptop.c - Asus Laptop Support
3 *
4 *
5 * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
6 * Copyright (C) 2006-2007 Corentin Chary
7 *
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.
12 *
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.
17 *
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
21 *
22 *
23 * The development page for this driver is located at
24 * http://sourceforge.net/projects/acpi4asus/
25 *
26 * Credits:
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
34 */
35
36 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
37
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>
45 #include <linux/fb.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>
52
53 #define ASUS_LAPTOP_VERSION "0.42"
54
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."
60
61 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
62 MODULE_DESCRIPTION(ASUS_LAPTOP_NAME);
63 MODULE_LICENSE("GPL");
64
65 /*
66 * WAPF defines the behavior of the Fn+Fx wlan key
67 * The significance of values is yet to be found, but
68 * most of the time:
69 * 0x0 will do nothing
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
72 * 0x5 like 0x1 or 0x4
73 * So, if something doesn't work as you want, just try other values =)
74 */
75 static uint wapf = 1;
76 module_param(wapf, uint, 0644);
77 MODULE_PARM_DESC(wapf, "WAPF value");
78
79 static uint wlan_status = 1;
80 static uint bluetooth_status = 1;
81
82 module_param(wlan_status, uint, 0644);
83 MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot "
84 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
85 "default is 1");
86
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). "
90 "default is 1");
91
92 /*
93 * Some events we use, same for all Asus
94 */
95 #define ATKD_BR_UP 0x10
96 #define ATKD_BR_DOWN 0x20
97 #define ATKD_LCD_ON 0x33
98 #define ATKD_LCD_OFF 0x34
99
100 /*
101 * Known bits returned by \_SB.ATKD.HWRS
102 */
103 #define WL_HWRS 0x80
104 #define BT_HWRS 0x100
105
106 /*
107 * Flags for hotk status
108 * WL_ON and BT_ON are also used for wireless_status()
109 */
110 #define WL_RSTS 0x01 /* internal Wifi */
111 #define BT_RSTS 0x02 /* internal Bluetooth */
112
113 #define ASUS_HANDLE(object, paths...) \
114 static acpi_handle object##_handle = NULL; \
115 static char *object##_paths[] = { paths }
116
117 /* LED */
118 #define METHOD_MLED "MLED"
119 #define METHOD_TLED "TLED"
120 #define METHOD_RLED "RLED" /* W1JC */
121 #define METHOD_PLED "PLED" /* A7J */
122 #define METHOD_GLED "GLED" /* G1, G2 (probably) */
123
124 /* LEDD */
125 #define METHOD_LEDD "SLCM"
126
127 /*
128 * Bluetooth and WLAN
129 * WLED and BLED are not handled like other XLED, because in some dsdt
130 * they also control the WLAN/Bluetooth device.
131 */
132 #define METHOD_WLAN "WLED"
133 #define METHOD_BLUETOOTH "BLED"
134 #define METHOD_WL_STATUS "RSTS"
135
136 /* Brightness */
137 #define METHOD_BRIGHTNESS_SET "SPLV"
138 #define METHOD_BRIGHTNESS_GET "GPLV"
139
140 /* Backlight */
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 */
149
150 /* Display */
151 #define METHOD_SWITCH_DISPLAY "SDSP"
152 ASUS_HANDLE(display_get,
153 /* A6B, A6K A6R A7D F3JM L4R M6R A3G M6A M6V VX-1 V6J V6V W3Z */
154 "\\_SB.PCI0.P0P1.VGA.GETD",
155 /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V S5A M5A z33A W1Jc W2V G1 */
156 "\\_SB.PCI0.P0P2.VGA.GETD",
157 /* A6V A6Q */
158 "\\_SB.PCI0.P0P3.VGA.GETD",
159 /* A6T, A6M */
160 "\\_SB.PCI0.P0PA.VGA.GETD",
161 /* L3C */
162 "\\_SB.PCI0.PCI1.VGAC.NMAP",
163 /* Z96F */
164 "\\_SB.PCI0.VGA.GETD",
165 /* A2D */
166 "\\ACTD",
167 /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */
168 "\\ADVG",
169 /* P30 */
170 "\\DNXT",
171 /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */
172 "\\INFB",
173 /* A3F A6F A3N A3L M6N W3N W6A */
174 "\\SSTE");
175
176 #define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */
177 #define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */
178
179 /* GPS */
180 /* R2H use different handle for GPS on/off */
181 #define METHOD_GPS_ON "SDON"
182 #define METHOD_GPS_OFF "SDOF"
183 #define METHOD_GPS_STATUS "GPST"
184
185 /* Keyboard light */
186 #define METHOD_KBD_LIGHT_SET "SLKB"
187 #define METHOD_KBD_LIGHT_GET "GLKB"
188
189 /*
190 * Define a specific led structure to keep the main structure clean
191 */
192 #define ASUS_DEFINE_LED(object) \
193 int object##_wk; \
194 struct work_struct object##_work; \
195 struct led_classdev object;
196
197
198 #define led_to_asus(led_cdev, led) \
199 container_of(container_of(led_cdev, struct asus_laptop_leds, \
200 led), \
201 struct asus_laptop, leds)
202 #define work_to_asus(work, led) \
203 container_of(container_of(work, struct asus_laptop_leds, \
204 led##_work), \
205 struct asus_laptop, leds)
206
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;
215 };
216
217 /*
218 * This is the main structure, we can use it to store anything interesting
219 * about the hotk device
220 */
221 struct asus_laptop {
222 char *name; /* laptop name */
223
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;
228
229 struct input_dev *inputdev;
230 struct key_entry *keymap;
231
232 struct asus_laptop_leds leds;
233
234 int wireless_status;
235 bool have_rsts;
236 int lcd_state;
237
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 */
243 u16 *keycode_map;
244 };
245
246 struct key_entry {
247 char type;
248 u8 code;
249 u16 keycode;
250 };
251
252 enum { KE_KEY, KE_END };
253
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},
289 {KE_END, 0},
290 };
291
292 /*
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
296 *
297 * returns 0 if write is successful, -1 else.
298 */
299 static int write_acpi_int_ret(acpi_handle handle, const char *method, int val,
300 struct acpi_buffer *output)
301 {
302 struct acpi_object_list params; /* list of input parameters (an int) */
303 union acpi_object in_obj; /* the only param we use */
304 acpi_status status;
305
306 if (!handle)
307 return 0;
308
309 params.count = 1;
310 params.pointer = &in_obj;
311 in_obj.type = ACPI_TYPE_INTEGER;
312 in_obj.integer.value = val;
313
314 status = acpi_evaluate_object(handle, (char *)method, &params, output);
315 if (status == AE_OK)
316 return 0;
317 else
318 return -1;
319 }
320
321 static int write_acpi_int(acpi_handle handle, const char *method, int val)
322 {
323 return write_acpi_int_ret(handle, method, val, NULL);
324 }
325
326 static int acpi_check_handle(acpi_handle handle, const char *method,
327 acpi_handle *ret)
328 {
329 acpi_status status;
330
331 if (method == NULL)
332 return -ENODEV;
333
334 if (ret)
335 status = acpi_get_handle(handle, (char *)method,
336 ret);
337 else {
338 acpi_handle dummy;
339
340 status = acpi_get_handle(handle, (char *)method,
341 &dummy);
342 }
343
344 if (status != AE_OK) {
345 if (ret)
346 pr_warning("Error finding %s\n", method);
347 return -ENODEV;
348 }
349 return 0;
350 }
351
352 /* Generic LED function */
353 static int asus_led_set(struct asus_laptop *asus, char *method,
354 int value)
355 {
356 if (!strcmp(method, METHOD_MLED))
357 value = !value;
358 else if (!strcmp(method, METHOD_GLED))
359 value = !value + 1;
360 else
361 value = !!value;
362
363 return write_acpi_int(asus->handle, method, value);
364 }
365
366 /*
367 * LEDs
368 */
369 #define ASUS_LED(object, ledname, max) \
370 static void object##_led_set(struct led_classdev *led_cdev, \
371 enum led_brightness value); \
372 static enum led_brightness object##_led_get( \
373 struct led_classdev *led_cdev); \
374 static void object##_led_update(struct work_struct *ignored); \
375 static struct led_classdev object##_led = { \
376 .name = "asus::" ledname, \
377 .brightness_set = object##_led_set, \
378 .brightness_get = object##_led_get, \
379 .max_brightness = max \
380 }
381
382 ASUS_LED(mled, "mail", 1);
383 ASUS_LED(tled, "touchpad", 1);
384 ASUS_LED(rled, "record", 1);
385 ASUS_LED(pled, "phone", 1);
386 ASUS_LED(gled, "gaming", 1);
387 ASUS_LED(kled, "kbd_backlight", 3);
388
389 /* /sys/class/led handlers */
390 #define ASUS_LED_HANDLER(object, method) \
391 static void object##_led_set(struct led_classdev *led_cdev, \
392 enum led_brightness value) \
393 { \
394 struct asus_laptop *asus = \
395 led_to_asus(led_cdev, object); \
396 \
397 asus->leds.object##_wk = (value > 0) ? 1 : 0; \
398 queue_work(asus->leds.workqueue, \
399 &asus->leds.object##_work); \
400 } \
401 static void object##_led_update(struct work_struct *work) \
402 { \
403 struct asus_laptop *asus = work_to_asus(work, object); \
404 \
405 int value = asus->leds.object##_wk; \
406 asus_led_set(asus, method, value); \
407 } \
408 static enum led_brightness object##_led_get( \
409 struct led_classdev *led_cdev) \
410 { \
411 return led_cdev->brightness; \
412 }
413
414 ASUS_LED_HANDLER(mled, METHOD_MLED);
415 ASUS_LED_HANDLER(pled, METHOD_PLED);
416 ASUS_LED_HANDLER(rled, METHOD_RLED);
417 ASUS_LED_HANDLER(tled, METHOD_TLED);
418 ASUS_LED_HANDLER(gled, METHOD_GLED);
419
420 /*
421 * Keyboard backlight (also a LED)
422 */
423 static int asus_kled_lvl(struct asus_laptop *asus)
424 {
425 unsigned long long kblv;
426 struct acpi_object_list params;
427 union acpi_object in_obj;
428 acpi_status rv;
429
430 params.count = 1;
431 params.pointer = &in_obj;
432 in_obj.type = ACPI_TYPE_INTEGER;
433 in_obj.integer.value = 2;
434
435 rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET,
436 &params, &kblv);
437 if (ACPI_FAILURE(rv)) {
438 pr_warning("Error reading kled level\n");
439 return -ENODEV;
440 }
441 return kblv;
442 }
443
444 static int asus_kled_set(struct asus_laptop *asus, int kblv)
445 {
446 if (kblv > 0)
447 kblv = (1 << 7) | (kblv & 0x7F);
448 else
449 kblv = 0;
450
451 if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) {
452 pr_warning("Keyboard LED display write failed\n");
453 return -EINVAL;
454 }
455 return 0;
456 }
457
458 static void kled_led_set(struct led_classdev *led_cdev,
459 enum led_brightness value)
460 {
461 struct asus_laptop *asus = led_to_asus(led_cdev, kled);
462
463 asus->leds.kled_wk = value;
464 queue_work(asus->leds.workqueue, &asus->leds.kled_work);
465 }
466
467 static void kled_led_update(struct work_struct *work)
468 {
469 struct asus_laptop *asus = work_to_asus(work, kled);
470
471 asus_kled_set(asus, asus->leds.kled_wk);
472 }
473
474 static enum led_brightness kled_led_get(struct led_classdev *led_cdev)
475 {
476 struct asus_laptop *asus = led_to_asus(led_cdev, kled);
477
478 return asus_kled_lvl(asus);
479 }
480
481 #define ASUS_LED_UNREGISTER(object) \
482 if (object##_led.dev) \
483 led_classdev_unregister(&object##_led)
484
485 static void asus_led_exit(struct asus_laptop *asus)
486 {
487 ASUS_LED_UNREGISTER(mled);
488 ASUS_LED_UNREGISTER(tled);
489 ASUS_LED_UNREGISTER(pled);
490 ASUS_LED_UNREGISTER(rled);
491 ASUS_LED_UNREGISTER(gled);
492 ASUS_LED_UNREGISTER(kled);
493 if (asus->leds.workqueue) {
494 destroy_workqueue(asus->leds.workqueue);
495 asus->leds.workqueue = NULL;
496 }
497 }
498
499 /* Ugly macro, need to fix that later */
500 #define ASUS_LED_REGISTER(asus, object, _name, max, method) \
501 do { \
502 struct led_classdev *ldev = &asus->leds.object; \
503 \
504 if (method && acpi_check_handle(asus->handle, method, NULL)) \
505 break ; \
506 \
507 INIT_WORK(&asus->leds.object##_work, object##_led_update); \
508 ldev->name = "asus::" _name; \
509 ldev->brightness_set = object##_led_set; \
510 ldev->max_brightness = max; \
511 rv = led_classdev_register(&asus->platform_device->dev, ldev); \
512 if (rv) \
513 goto error; \
514 } while (0)
515
516 static int asus_led_init(struct asus_laptop *asus)
517 {
518 int rv;
519
520 /*
521 * Functions that actually update the LED's are called from a
522 * workqueue. By doing this as separate work rather than when the LED
523 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
524 * potentially bad time, such as a timer interrupt.
525 */
526 asus->leds.workqueue = create_singlethread_workqueue("led_workqueue");
527 if (!asus->leds.workqueue)
528 return -ENOMEM;
529
530 ASUS_LED_REGISTER(asus, mled, "mail", 1, METHOD_MLED);
531 ASUS_LED_REGISTER(asus, tled, "touchpad", 1, METHOD_TLED);
532 ASUS_LED_REGISTER(asus, rled, "record", 1, METHOD_RLED);
533 ASUS_LED_REGISTER(asus, pled, "phone", 1, METHOD_PLED);
534 ASUS_LED_REGISTER(asus, gled, "gaming", 1, METHOD_GLED);
535 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) &&
536 !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL))
537 ASUS_LED_REGISTER(asus, kled, "kbd_backlight", 3, NULL);
538 error:
539 if (rv)
540 asus_led_exit(asus);
541 return rv;
542 }
543
544 /*
545 * Backlight device
546 */
547 static int asus_lcd_status(struct asus_laptop *asus)
548 {
549 return asus->lcd_state;
550 }
551
552 static int asus_lcd_set(struct asus_laptop *asus, int value)
553 {
554 int lcd = 0;
555 acpi_status status = 0;
556
557 lcd = !!value;
558
559 if (lcd == asus_lcd_status(asus))
560 return 0;
561
562 if (!lcd_switch_handle)
563 return -ENODEV;
564
565 status = acpi_evaluate_object(lcd_switch_handle,
566 NULL, NULL, NULL);
567
568 if (ACPI_FAILURE(status)) {
569 pr_warning("Error switching LCD\n");
570 return -ENODEV;
571 }
572
573 asus->lcd_state = lcd;
574 return 0;
575 }
576
577 static void lcd_blank(struct asus_laptop *asus, int blank)
578 {
579 struct backlight_device *bd = asus->backlight_device;
580
581 asus->lcd_state = (blank == FB_BLANK_UNBLANK);
582
583 if (bd) {
584 bd->props.power = blank;
585 backlight_update_status(bd);
586 }
587 }
588
589 static int asus_read_brightness(struct backlight_device *bd)
590 {
591 struct asus_laptop *asus = bl_get_data(bd);
592 unsigned long long value;
593 acpi_status rv = AE_OK;
594
595 rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET,
596 NULL, &value);
597 if (ACPI_FAILURE(rv))
598 pr_warning("Error reading brightness\n");
599
600 return value;
601 }
602
603 static int asus_set_brightness(struct backlight_device *bd, int value)
604 {
605 struct asus_laptop *asus = bl_get_data(bd);
606
607 if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) {
608 pr_warning("Error changing brightness\n");
609 return -EIO;
610 }
611 return 0;
612 }
613
614 static int update_bl_status(struct backlight_device *bd)
615 {
616 struct asus_laptop *asus = bl_get_data(bd);
617 int rv;
618 int value = bd->props.brightness;
619
620 rv = asus_set_brightness(bd, value);
621 if (rv)
622 return rv;
623
624 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0;
625 return asus_lcd_set(asus, value);
626 }
627
628 static struct backlight_ops asusbl_ops = {
629 .get_brightness = asus_read_brightness,
630 .update_status = update_bl_status,
631 };
632
633 static int asus_backlight_init(struct asus_laptop *asus)
634 {
635 struct backlight_device *bd;
636 struct device *dev = &asus->platform_device->dev;
637
638 if (!acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) &&
639 !acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL) &&
640 lcd_switch_handle) {
641 bd = backlight_device_register(ASUS_LAPTOP_FILE, dev,
642 asus, &asusbl_ops);
643 if (IS_ERR(bd)) {
644 pr_err("Could not register asus backlight device\n");
645 asus->backlight_device = NULL;
646 return PTR_ERR(bd);
647 }
648
649 asus->backlight_device = bd;
650
651 bd->props.max_brightness = 15;
652 bd->props.power = FB_BLANK_UNBLANK;
653 bd->props.brightness = asus_read_brightness(bd);
654 backlight_update_status(bd);
655 }
656 return 0;
657 }
658
659 static void asus_backlight_exit(struct asus_laptop *asus)
660 {
661 if (asus->backlight_device)
662 backlight_device_unregister(asus->backlight_device);
663 }
664
665 /*
666 * Platform device handlers
667 */
668
669 /*
670 * We write our info in page, we begin at offset off and cannot write more
671 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
672 * number of bytes written in page
673 */
674 static ssize_t show_infos(struct device *dev,
675 struct device_attribute *attr, char *page)
676 {
677 struct asus_laptop *asus = dev_get_drvdata(dev);
678 int len = 0;
679 unsigned long long temp;
680 char buf[16]; /* enough for all info */
681 acpi_status rv = AE_OK;
682
683 /*
684 * We use the easy way, we don't care of off and count, so we don't set eof
685 * to 1
686 */
687
688 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
689 len += sprintf(page + len, "Model reference : %s\n", asus->name);
690 /*
691 * The SFUN method probably allows the original driver to get the list
692 * of features supported by a given model. For now, 0x0100 or 0x0800
693 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
694 * The significance of others is yet to be found.
695 */
696 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
697 if (!ACPI_FAILURE(rv))
698 len += sprintf(page + len, "SFUN value : %#x\n",
699 (uint) temp);
700 /*
701 * The HWRS method return informations about the hardware.
702 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
703 * The significance of others is yet to be found.
704 * If we don't find the method, we assume the device are present.
705 */
706 rv = acpi_evaluate_integer(asus->handle, "HRWS", NULL, &temp);
707 if (!ACPI_FAILURE(rv))
708 len += sprintf(page + len, "HRWS value : %#x\n",
709 (uint) temp);
710 /*
711 * Another value for userspace: the ASYM method returns 0x02 for
712 * battery low and 0x04 for battery critical, its readings tend to be
713 * more accurate than those provided by _BST.
714 * Note: since not all the laptops provide this method, errors are
715 * silently ignored.
716 */
717 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
718 if (!ACPI_FAILURE(rv))
719 len += sprintf(page + len, "ASYM value : %#x\n",
720 (uint) temp);
721 if (asus->dsdt_info) {
722 snprintf(buf, 16, "%d", asus->dsdt_info->length);
723 len += sprintf(page + len, "DSDT length : %s\n", buf);
724 snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
725 len += sprintf(page + len, "DSDT checksum : %s\n", buf);
726 snprintf(buf, 16, "%d", asus->dsdt_info->revision);
727 len += sprintf(page + len, "DSDT revision : %s\n", buf);
728 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
729 len += sprintf(page + len, "OEM id : %s\n", buf);
730 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
731 len += sprintf(page + len, "OEM table id : %s\n", buf);
732 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
733 len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
734 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
735 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
736 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
737 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
738 }
739
740 return len;
741 }
742
743 static int parse_arg(const char *buf, unsigned long count, int *val)
744 {
745 if (!count)
746 return 0;
747 if (count > 31)
748 return -EINVAL;
749 if (sscanf(buf, "%i", val) != 1)
750 return -EINVAL;
751 return count;
752 }
753
754 static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
755 const char *buf, size_t count,
756 const char *method)
757 {
758 int rv, value;
759 int out = 0;
760
761 rv = parse_arg(buf, count, &value);
762 if (rv > 0)
763 out = value ? 1 : 0;
764
765 if (write_acpi_int(asus->handle, method, value))
766 return -ENODEV;
767 return rv;
768 }
769
770 /*
771 * LEDD display
772 */
773 static ssize_t show_ledd(struct device *dev,
774 struct device_attribute *attr, char *buf)
775 {
776 struct asus_laptop *asus = dev_get_drvdata(dev);
777
778 return sprintf(buf, "0x%08x\n", asus->ledd_status);
779 }
780
781 static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
782 const char *buf, size_t count)
783 {
784 struct asus_laptop *asus = dev_get_drvdata(dev);
785 int rv, value;
786
787 rv = parse_arg(buf, count, &value);
788 if (rv > 0) {
789 if (write_acpi_int(asus->handle, METHOD_LEDD, value))
790 pr_warning("LED display write failed\n");
791 else
792 asus->ledd_status = (u32) value;
793 }
794 return rv;
795 }
796
797 /*
798 * Wireless
799 */
800 static int asus_wireless_status(struct asus_laptop *asus, int mask)
801 {
802 unsigned long long status;
803 acpi_status rv = AE_OK;
804
805 if (!asus->have_rsts)
806 return (asus->wireless_status & mask) ? 1 : 0;
807
808 rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
809 NULL, &status);
810 if (ACPI_FAILURE(rv)) {
811 pr_warning("Error reading Wireless status\n");
812 return -EINVAL;
813 }
814 return !!(status & mask);
815 }
816
817 /*
818 * WLAN
819 */
820 static int asus_wlan_set(struct asus_laptop *asus, int status)
821 {
822 if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
823 pr_warning("Error setting wlan status to %d", status);
824 return -EIO;
825 }
826 return 0;
827 }
828
829 static ssize_t show_wlan(struct device *dev,
830 struct device_attribute *attr, char *buf)
831 {
832 struct asus_laptop *asus = dev_get_drvdata(dev);
833
834 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
835 }
836
837 static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
838 const char *buf, size_t count)
839 {
840 struct asus_laptop *asus = dev_get_drvdata(dev);
841
842 return sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
843 }
844
845 /*
846 * Bluetooth
847 */
848 static int asus_bluetooth_set(struct asus_laptop *asus, int status)
849 {
850 if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
851 pr_warning("Error setting bluetooth status to %d", status);
852 return -EIO;
853 }
854 return 0;
855 }
856
857 static ssize_t show_bluetooth(struct device *dev,
858 struct device_attribute *attr, char *buf)
859 {
860 struct asus_laptop *asus = dev_get_drvdata(dev);
861
862 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
863 }
864
865 static ssize_t store_bluetooth(struct device *dev,
866 struct device_attribute *attr, const char *buf,
867 size_t count)
868 {
869 struct asus_laptop *asus = dev_get_drvdata(dev);
870
871 return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
872 }
873
874 /*
875 * Display
876 */
877 static void asus_set_display(struct asus_laptop *asus, int value)
878 {
879 /* no sanity check needed for now */
880 if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
881 pr_warning("Error setting display\n");
882 return;
883 }
884
885 static int read_display(struct asus_laptop *asus)
886 {
887 unsigned long long value = 0;
888 acpi_status rv = AE_OK;
889
890 /*
891 * In most of the case, we know how to set the display, but sometime
892 * we can't read it
893 */
894 if (display_get_handle) {
895 rv = acpi_evaluate_integer(display_get_handle, NULL,
896 NULL, &value);
897 if (ACPI_FAILURE(rv))
898 pr_warning("Error reading display status\n");
899 }
900
901 value &= 0x0F; /* needed for some models, shouldn't hurt others */
902
903 return value;
904 }
905
906 /*
907 * Now, *this* one could be more user-friendly, but so far, no-one has
908 * complained. The significance of bits is the same as in store_disp()
909 */
910 static ssize_t show_disp(struct device *dev,
911 struct device_attribute *attr, char *buf)
912 {
913 struct asus_laptop *asus = dev_get_drvdata(dev);
914
915 return sprintf(buf, "%d\n", read_display(asus));
916 }
917
918 /*
919 * Experimental support for display switching. As of now: 1 should activate
920 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
921 * Any combination (bitwise) of these will suffice. I never actually tested 4
922 * displays hooked up simultaneously, so be warned. See the acpi4asus README
923 * for more info.
924 */
925 static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
926 const char *buf, size_t count)
927 {
928 struct asus_laptop *asus = dev_get_drvdata(dev);
929 int rv, value;
930
931 rv = parse_arg(buf, count, &value);
932 if (rv > 0)
933 asus_set_display(asus, value);
934 return rv;
935 }
936
937 /*
938 * Light Sens
939 */
940 static void asus_als_switch(struct asus_laptop *asus, int value)
941 {
942 if (write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value))
943 pr_warning("Error setting light sensor switch\n");
944 asus->light_switch = value;
945 }
946
947 static ssize_t show_lssw(struct device *dev,
948 struct device_attribute *attr, char *buf)
949 {
950 struct asus_laptop *asus = dev_get_drvdata(dev);
951
952 return sprintf(buf, "%d\n", asus->light_switch);
953 }
954
955 static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
956 const char *buf, size_t count)
957 {
958 struct asus_laptop *asus = dev_get_drvdata(dev);
959 int rv, value;
960
961 rv = parse_arg(buf, count, &value);
962 if (rv > 0)
963 asus_als_switch(asus, value ? 1 : 0);
964
965 return rv;
966 }
967
968 static void asus_als_level(struct asus_laptop *asus, int value)
969 {
970 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value))
971 pr_warning("Error setting light sensor level\n");
972 asus->light_level = value;
973 }
974
975 static ssize_t show_lslvl(struct device *dev,
976 struct device_attribute *attr, char *buf)
977 {
978 struct asus_laptop *asus = dev_get_drvdata(dev);
979
980 return sprintf(buf, "%d\n", asus->light_level);
981 }
982
983 static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
984 const char *buf, size_t count)
985 {
986 struct asus_laptop *asus = dev_get_drvdata(dev);
987 int rv, value;
988
989 rv = parse_arg(buf, count, &value);
990 if (rv > 0) {
991 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
992 /* 0 <= value <= 15 */
993 asus_als_level(asus, value);
994 }
995
996 return rv;
997 }
998
999 /*
1000 * GPS
1001 * TODO: use rfkill
1002 */
1003 static int asus_gps_status(struct asus_laptop *asus)
1004 {
1005 unsigned long long status;
1006 acpi_status rv = AE_OK;
1007
1008 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
1009 NULL, &status);
1010 if (ACPI_FAILURE(rv)) {
1011 pr_warning("Error reading GPS status\n");
1012 return -ENODEV;
1013 }
1014 return !!status;
1015 }
1016
1017 static int asus_gps_switch(struct asus_laptop *asus, int status)
1018 {
1019 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
1020
1021 if (write_acpi_int(asus->handle, meth, 0x02))
1022 return -ENODEV;
1023 return 0;
1024 }
1025
1026 static ssize_t show_gps(struct device *dev,
1027 struct device_attribute *attr, char *buf)
1028 {
1029 struct asus_laptop *asus = dev_get_drvdata(dev);
1030
1031 return sprintf(buf, "%d\n", asus_gps_status(asus));
1032 }
1033
1034 static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
1035 const char *buf, size_t count)
1036 {
1037 struct asus_laptop *asus = dev_get_drvdata(dev);
1038 int rv, value;
1039 int ret;
1040
1041 rv = parse_arg(buf, count, &value);
1042 if (rv <= 0)
1043 return -EINVAL;
1044 ret = asus_gps_switch(asus, !!value);
1045 if (ret)
1046 return ret;
1047 return rv;
1048 }
1049
1050 /*
1051 * Input device (i.e. hotkeys)
1052 */
1053 static struct key_entry *asus_get_entry_by_scancode(struct asus_laptop *asus,
1054 int code)
1055 {
1056 struct key_entry *key;
1057
1058 for (key = asus->keymap; key->type != KE_END; key++)
1059 if (code == key->code)
1060 return key;
1061
1062 return NULL;
1063 }
1064
1065 static struct key_entry *asus_get_entry_by_keycode(struct asus_laptop *asus,
1066 int code)
1067 {
1068 struct key_entry *key;
1069
1070 for (key = asus->keymap; key->type != KE_END; key++)
1071 if (code == key->keycode && key->type == KE_KEY)
1072 return key;
1073
1074 return NULL;
1075 }
1076
1077 static int asus_getkeycode(struct input_dev *dev, int scancode, int *keycode)
1078 {
1079 struct asus_laptop *asus = input_get_drvdata(dev);
1080 struct key_entry *key = asus_get_entry_by_scancode(asus, scancode);
1081
1082 if (key && key->type == KE_KEY) {
1083 *keycode = key->keycode;
1084 return 0;
1085 }
1086
1087 return -EINVAL;
1088 }
1089
1090 static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode)
1091 {
1092 struct asus_laptop *asus = input_get_drvdata(dev);
1093 struct key_entry *key;
1094 int old_keycode;
1095
1096 if (keycode < 0 || keycode > KEY_MAX)
1097 return -EINVAL;
1098
1099 key = asus_get_entry_by_scancode(asus, scancode);
1100 if (key && key->type == KE_KEY) {
1101 old_keycode = key->keycode;
1102 key->keycode = keycode;
1103 set_bit(keycode, dev->keybit);
1104 if (!asus_get_entry_by_keycode(asus, old_keycode))
1105 clear_bit(old_keycode, dev->keybit);
1106 return 0;
1107 }
1108
1109 return -EINVAL;
1110 }
1111
1112 static void asus_input_notify(struct asus_laptop *asus, int event)
1113 {
1114 struct key_entry *key;
1115
1116 key = asus_get_entry_by_scancode(asus, event);
1117 if (!key)
1118 return ;
1119
1120 switch (key->type) {
1121 case KE_KEY:
1122 input_report_key(asus->inputdev, key->keycode, 1);
1123 input_sync(asus->inputdev);
1124 input_report_key(asus->inputdev, key->keycode, 0);
1125 input_sync(asus->inputdev);
1126 break;
1127 }
1128 }
1129
1130 static int asus_input_init(struct asus_laptop *asus)
1131 {
1132 const struct key_entry *key;
1133 int result;
1134
1135 asus->inputdev = input_allocate_device();
1136 if (!asus->inputdev) {
1137 pr_info("Unable to allocate input device\n");
1138 return 0;
1139 }
1140 asus->inputdev->name = "Asus Laptop extra buttons";
1141 asus->inputdev->dev.parent = &asus->platform_device->dev;
1142 asus->inputdev->phys = ASUS_LAPTOP_FILE "/input0";
1143 asus->inputdev->id.bustype = BUS_HOST;
1144 asus->inputdev->getkeycode = asus_getkeycode;
1145 asus->inputdev->setkeycode = asus_setkeycode;
1146 input_set_drvdata(asus->inputdev, asus);
1147
1148 asus->keymap = kmemdup(asus_keymap, sizeof(asus_keymap),
1149 GFP_KERNEL);
1150 for (key = asus->keymap; key->type != KE_END; key++) {
1151 switch (key->type) {
1152 case KE_KEY:
1153 set_bit(EV_KEY, asus->inputdev->evbit);
1154 set_bit(key->keycode, asus->inputdev->keybit);
1155 break;
1156 }
1157 }
1158 result = input_register_device(asus->inputdev);
1159 if (result) {
1160 pr_info("Unable to register input device\n");
1161 input_free_device(asus->inputdev);
1162 }
1163 return result;
1164 }
1165
1166 static void asus_input_exit(struct asus_laptop *asus)
1167 {
1168 if (asus->inputdev)
1169 input_unregister_device(asus->inputdev);
1170 }
1171
1172 /*
1173 * ACPI driver
1174 */
1175 static void asus_acpi_notify(struct acpi_device *device, u32 event)
1176 {
1177 struct asus_laptop *asus = acpi_driver_data(device);
1178 u16 count;
1179
1180 /*
1181 * We need to tell the backlight device when the backlight power is
1182 * switched
1183 */
1184 if (event == ATKD_LCD_ON)
1185 lcd_blank(asus, FB_BLANK_UNBLANK);
1186 else if (event == ATKD_LCD_OFF)
1187 lcd_blank(asus, FB_BLANK_POWERDOWN);
1188
1189 /* TODO Find a better way to handle events count. */
1190 count = asus->event_count[event % 128]++;
1191 acpi_bus_generate_proc_event(asus->device, event, count);
1192 acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1193 dev_name(&asus->device->dev), event,
1194 count);
1195
1196 asus_input_notify(asus, event);
1197 }
1198
1199 #define ASUS_CREATE_DEVICE_ATTR(_name) \
1200 struct device_attribute dev_attr_##_name = { \
1201 .attr = { \
1202 .name = __stringify(_name), \
1203 .mode = 0 }, \
1204 .show = NULL, \
1205 .store = NULL, \
1206 }
1207
1208 #define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \
1209 do { \
1210 dev_attr_##_name.attr.mode = _mode; \
1211 dev_attr_##_name.show = _show; \
1212 dev_attr_##_name.store = _store; \
1213 } while(0)
1214
1215 static ASUS_CREATE_DEVICE_ATTR(infos);
1216 static ASUS_CREATE_DEVICE_ATTR(wlan);
1217 static ASUS_CREATE_DEVICE_ATTR(bluetooth);
1218 static ASUS_CREATE_DEVICE_ATTR(display);
1219 static ASUS_CREATE_DEVICE_ATTR(ledd);
1220 static ASUS_CREATE_DEVICE_ATTR(ls_switch);
1221 static ASUS_CREATE_DEVICE_ATTR(ls_level);
1222 static ASUS_CREATE_DEVICE_ATTR(gps);
1223
1224 static struct attribute *asuspf_attributes[] = {
1225 &dev_attr_infos.attr,
1226 &dev_attr_wlan.attr,
1227 &dev_attr_bluetooth.attr,
1228 &dev_attr_display.attr,
1229 &dev_attr_ledd.attr,
1230 &dev_attr_ls_switch.attr,
1231 &dev_attr_ls_level.attr,
1232 &dev_attr_gps.attr,
1233 NULL
1234 };
1235
1236 static struct attribute_group platform_attribute_group = {
1237 .attrs = asuspf_attributes
1238 };
1239
1240 static int asus_platform_init(struct asus_laptop *asus)
1241 {
1242 int result;
1243
1244 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
1245 if (!asus->platform_device)
1246 return -ENOMEM;
1247 platform_set_drvdata(asus->platform_device, asus);
1248
1249 result = platform_device_add(asus->platform_device);
1250 if (result)
1251 goto fail_platform_device;
1252
1253 result = sysfs_create_group(&asus->platform_device->dev.kobj,
1254 &platform_attribute_group);
1255 if (result)
1256 goto fail_sysfs;
1257 return 0;
1258
1259 fail_sysfs:
1260 platform_device_del(asus->platform_device);
1261 fail_platform_device:
1262 platform_device_put(asus->platform_device);
1263 return result;
1264 }
1265
1266 static void asus_platform_exit(struct asus_laptop *asus)
1267 {
1268 sysfs_remove_group(&asus->platform_device->dev.kobj,
1269 &platform_attribute_group);
1270 platform_device_unregister(asus->platform_device);
1271 }
1272
1273 static struct platform_driver platform_driver = {
1274 .driver = {
1275 .name = ASUS_LAPTOP_FILE,
1276 .owner = THIS_MODULE,
1277 }
1278 };
1279
1280 static void asus_laptop_add_fs(struct asus_laptop *asus)
1281 {
1282 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL);
1283
1284 if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL))
1285 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan);
1286
1287 if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL))
1288 ASUS_SET_DEVICE_ATTR(bluetooth, 0644,
1289 show_bluetooth, store_bluetooth);
1290
1291 if (!acpi_check_handle(asus->handle, METHOD_SWITCH_DISPLAY, NULL)) {
1292 if (display_get_handle)
1293 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp,
1294 store_disp);
1295 else
1296 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp);
1297 }
1298
1299 if (!acpi_check_handle(asus->handle, METHOD_LEDD, NULL))
1300 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);
1301
1302 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
1303 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
1304 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);
1305 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);
1306 }
1307
1308 if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
1309 !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
1310 !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1311 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps);
1312 }
1313
1314 static int asus_handle_init(char *name, acpi_handle * handle,
1315 char **paths, int num_paths)
1316 {
1317 int i;
1318 acpi_status status;
1319
1320 for (i = 0; i < num_paths; i++) {
1321 status = acpi_get_handle(NULL, paths[i], handle);
1322 if (ACPI_SUCCESS(status))
1323 return 0;
1324 }
1325
1326 *handle = NULL;
1327 return -ENODEV;
1328 }
1329
1330 #define ASUS_HANDLE_INIT(object) \
1331 asus_handle_init(#object, &object##_handle, object##_paths, \
1332 ARRAY_SIZE(object##_paths))
1333
1334 /*
1335 * This function is used to initialize the context with right values. In this
1336 * method, we can make all the detection we want, and modify the asus_laptop
1337 * struct
1338 */
1339 static int asus_laptop_get_info(struct asus_laptop *asus)
1340 {
1341 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1342 union acpi_object *model = NULL;
1343 unsigned long long bsts_result, hwrs_result;
1344 char *string = NULL;
1345 acpi_status status;
1346
1347 /*
1348 * Get DSDT headers early enough to allow for differentiating between
1349 * models, but late enough to allow acpi_bus_register_driver() to fail
1350 * before doing anything ACPI-specific. Should we encounter a machine,
1351 * which needs special handling (i.e. its hotkey device has a different
1352 * HID), this bit will be moved.
1353 */
1354 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
1355 if (ACPI_FAILURE(status))
1356 pr_warning("Couldn't get the DSDT table header\n");
1357
1358 /* We have to write 0 on init this far for all ASUS models */
1359 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
1360 pr_err("Hotkey initialization failed\n");
1361 return -ENODEV;
1362 }
1363
1364 /* This needs to be called for some laptops to init properly */
1365 status =
1366 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
1367 if (ACPI_FAILURE(status))
1368 pr_warning("Error calling BSTS\n");
1369 else if (bsts_result)
1370 pr_notice("BSTS called, 0x%02x returned\n",
1371 (uint) bsts_result);
1372
1373 /* This too ... */
1374 if (write_acpi_int(asus->handle, "CWAP", wapf))
1375 pr_err("Error calling CWAP(%d)\n", wapf);
1376 /*
1377 * Try to match the object returned by INIT to the specific model.
1378 * Handle every possible object (or the lack of thereof) the DSDT
1379 * writers might throw at us. When in trouble, we pass NULL to
1380 * asus_model_match() and try something completely different.
1381 */
1382 if (buffer.pointer) {
1383 model = buffer.pointer;
1384 switch (model->type) {
1385 case ACPI_TYPE_STRING:
1386 string = model->string.pointer;
1387 break;
1388 case ACPI_TYPE_BUFFER:
1389 string = model->buffer.pointer;
1390 break;
1391 default:
1392 string = "";
1393 break;
1394 }
1395 }
1396 asus->name = kstrdup(string, GFP_KERNEL);
1397 if (!asus->name)
1398 return -ENOMEM;
1399
1400 if (*string)
1401 pr_notice(" %s model detected\n", string);
1402
1403 /*
1404 * The HWRS method return informations about the hardware.
1405 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
1406 * The significance of others is yet to be found.
1407 */
1408 status =
1409 acpi_evaluate_integer(asus->handle, "HRWS", NULL, &hwrs_result);
1410 if (!ACPI_FAILURE(status))
1411 pr_notice(" HRWS returned %x", (int)hwrs_result);
1412
1413 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL))
1414 asus->have_rsts = true;
1415
1416 /* Scheduled for removal */
1417 ASUS_HANDLE_INIT(lcd_switch);
1418 ASUS_HANDLE_INIT(display_get);
1419
1420 kfree(model);
1421
1422 return AE_OK;
1423 }
1424
1425 static bool asus_device_present;
1426
1427 static int __devinit asus_acpi_init(struct asus_laptop *asus)
1428 {
1429 int result = 0;
1430
1431 result = acpi_bus_get_status(asus->device);
1432 if (result)
1433 return result;
1434 if (!asus->device->status.present) {
1435 pr_err("Hotkey device not present, aborting\n");
1436 return -ENODEV;
1437 }
1438
1439 result = asus_laptop_get_info(asus);
1440 if (result)
1441 return result;
1442
1443 asus_laptop_add_fs(asus);
1444
1445 /* WLED and BLED are on by default */
1446 if (bluetooth_status >= 0)
1447 asus_bluetooth_set(asus, !!bluetooth_status);
1448
1449 if (wlan_status >= 0)
1450 asus_wlan_set(asus, !!wlan_status);
1451
1452 /* Keyboard Backlight is on by default */
1453 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL))
1454 asus_kled_set(asus, 1);
1455
1456 /* LED display is off by default */
1457 asus->ledd_status = 0xFFF;
1458
1459 /* Set initial values of light sensor and level */
1460 asus->light_switch = 0; /* Default to light sensor disabled */
1461 asus->light_level = 5; /* level 5 for sensor sensitivity */
1462
1463 if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
1464 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
1465 asus_als_switch(asus, asus->light_switch);
1466 asus_als_level(asus, asus->light_level);
1467 }
1468
1469 /* GPS is on by default */
1470 if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
1471 !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
1472 !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1473 asus_gps_switch(asus, 1);
1474 return result;
1475 }
1476
1477 static int __devinit asus_acpi_add(struct acpi_device *device)
1478 {
1479 struct asus_laptop *asus;
1480 int result;
1481
1482 pr_notice("Asus Laptop Support version %s\n",
1483 ASUS_LAPTOP_VERSION);
1484 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
1485 if (!asus)
1486 return -ENOMEM;
1487 asus->handle = device->handle;
1488 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
1489 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
1490 device->driver_data = asus;
1491 asus->device = device;
1492
1493 result = asus_acpi_init(asus);
1494 if (result)
1495 goto fail_platform;
1496
1497 /*
1498 * Register the platform device first. It is used as a parent for the
1499 * sub-devices below.
1500 */
1501 result = asus_platform_init(asus);
1502 if (result)
1503 goto fail_platform;
1504
1505 if (!acpi_video_backlight_support()) {
1506 result = asus_backlight_init(asus);
1507 if (result)
1508 goto fail_backlight;
1509 } else
1510 pr_info("Backlight controlled by ACPI video driver\n");
1511
1512 result = asus_input_init(asus);
1513 if (result)
1514 goto fail_input;
1515
1516 result = asus_led_init(asus);
1517 if (result)
1518 goto fail_led;
1519
1520 asus_device_present = true;
1521 return 0;
1522
1523 fail_led:
1524 asus_input_exit(asus);
1525 fail_input:
1526 asus_backlight_exit(asus);
1527 fail_backlight:
1528 asus_platform_exit(asus);
1529 fail_platform:
1530 kfree(asus->name);
1531 kfree(asus);
1532
1533 return result;
1534 }
1535
1536 static int asus_acpi_remove(struct acpi_device *device, int type)
1537 {
1538 struct asus_laptop *asus = acpi_driver_data(device);
1539
1540 asus_backlight_exit(asus);
1541 asus_led_exit(asus);
1542 asus_input_exit(asus);
1543 asus_platform_exit(asus);
1544
1545 kfree(asus->name);
1546 kfree(asus);
1547 return 0;
1548 }
1549
1550 static const struct acpi_device_id asus_device_ids[] = {
1551 {"ATK0100", 0},
1552 {"ATK0101", 0},
1553 {"", 0},
1554 };
1555 MODULE_DEVICE_TABLE(acpi, asus_device_ids);
1556
1557 static struct acpi_driver asus_acpi_driver = {
1558 .name = ASUS_LAPTOP_NAME,
1559 .class = ASUS_LAPTOP_CLASS,
1560 .owner = THIS_MODULE,
1561 .ids = asus_device_ids,
1562 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1563 .ops = {
1564 .add = asus_acpi_add,
1565 .remove = asus_acpi_remove,
1566 .notify = asus_acpi_notify,
1567 },
1568 };
1569
1570 static int __init asus_laptop_init(void)
1571 {
1572 int result;
1573
1574 result = platform_driver_register(&platform_driver);
1575 if (result < 0)
1576 return result;
1577
1578 result = acpi_bus_register_driver(&asus_acpi_driver);
1579 if (result < 0)
1580 goto fail_acpi_driver;
1581 if (!asus_device_present) {
1582 result = -ENODEV;
1583 goto fail_no_device;
1584 }
1585 return 0;
1586
1587 fail_no_device:
1588 acpi_bus_unregister_driver(&asus_acpi_driver);
1589 fail_acpi_driver:
1590 platform_driver_unregister(&platform_driver);
1591 return result;
1592 }
1593
1594 static void __exit asus_laptop_exit(void)
1595 {
1596 acpi_bus_unregister_driver(&asus_acpi_driver);
1597 platform_driver_unregister(&platform_driver);
1598 }
1599
1600 module_init(asus_laptop_init);
1601 module_exit(asus_laptop_exit);
Linux kernel - Deliverables
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