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Linux 3.4.102
[linux/fpc-iii.git] / drivers / platform / x86 / acer-wmi.c
blobc1a3fd8e12438bb0d4a995f107981edfe7c68a89
1 /*
2 * Acer WMI Laptop Extras
3 *
4 * Copyright (C) 2007-2009 Carlos Corbacho <carlos@strangeworlds.co.uk>
5 *
6 * Based on acer_acpi:
7 * Copyright (C) 2005-2007 E.M. Smith
8 * Copyright (C) 2007-2008 Carlos Corbacho <cathectic@gmail.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/types.h>
31 #include <linux/dmi.h>
32 #include <linux/fb.h>
33 #include <linux/backlight.h>
34 #include <linux/leds.h>
35 #include <linux/platform_device.h>
36 #include <linux/acpi.h>
37 #include <linux/i8042.h>
38 #include <linux/rfkill.h>
39 #include <linux/workqueue.h>
40 #include <linux/debugfs.h>
41 #include <linux/slab.h>
42 #include <linux/input.h>
43 #include <linux/input/sparse-keymap.h>
44
45 #include <acpi/acpi_drivers.h>
46 #include <acpi/video.h>
47
48 MODULE_AUTHOR("Carlos Corbacho");
49 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
50 MODULE_LICENSE("GPL");
51
52 /*
53 * Magic Number
54 * Meaning is unknown - this number is required for writing to ACPI for AMW0
55 * (it's also used in acerhk when directly accessing the BIOS)
56 */
57 #define ACER_AMW0_WRITE 0x9610
58
59 /*
60 * Bit masks for the AMW0 interface
61 */
62 #define ACER_AMW0_WIRELESS_MASK 0x35
63 #define ACER_AMW0_BLUETOOTH_MASK 0x34
64 #define ACER_AMW0_MAILLED_MASK 0x31
65
66 /*
67 * Method IDs for WMID interface
68 */
69 #define ACER_WMID_GET_WIRELESS_METHODID 1
70 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
71 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
72 #define ACER_WMID_SET_WIRELESS_METHODID 4
73 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
74 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
75 #define ACER_WMID_GET_THREEG_METHODID 10
76 #define ACER_WMID_SET_THREEG_METHODID 11
77
78 /*
79 * Acer ACPI method GUIDs
80 */
81 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
82 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
83 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
84 #define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A"
85 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
86
87 /*
88 * Acer ACPI event GUIDs
89 */
90 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
91
92 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
93 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
94 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
95
96 enum acer_wmi_event_ids {
97 WMID_HOTKEY_EVENT = 0x1,
98 };
99
100 static const struct key_entry acer_wmi_keymap[] = {
101 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
102 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */
103 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */
104 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
105 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
106 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
107 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
108 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
109 {KE_KEY, 0x29, {KEY_PROG3} }, /* P_Key for TM8372 */
110 {KE_IGNORE, 0x41, {KEY_MUTE} },
111 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
112 {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
113 {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
114 {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
115 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
116 {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
117 {KE_IGNORE, 0x45, {KEY_STOP} },
118 {KE_IGNORE, 0x50, {KEY_STOP} },
119 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
120 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
121 {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
122 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
123 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
124 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
125 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
126 {KE_IGNORE, 0x81, {KEY_SLEEP} },
127 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
128 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
129 {KE_END, 0}
130 };
131
132 static struct input_dev *acer_wmi_input_dev;
133
134 struct event_return_value {
135 u8 function;
136 u8 key_num;
137 u16 device_state;
138 u32 reserved;
139 } __attribute__((packed));
140
141 /*
142 * GUID3 Get Device Status device flags
143 */
144 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
145 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
146 #define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
147 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
148
149 struct lm_input_params {
150 u8 function_num; /* Function Number */
151 u16 commun_devices; /* Communication type devices default status */
152 u16 devices; /* Other type devices default status */
153 u8 lm_status; /* Launch Manager Status */
154 u16 reserved;
155 } __attribute__((packed));
156
157 struct lm_return_value {
158 u8 error_code; /* Error Code */
159 u8 ec_return_value; /* EC Return Value */
160 u16 reserved;
161 } __attribute__((packed));
162
163 struct wmid3_gds_set_input_param { /* Set Device Status input parameter */
164 u8 function_num; /* Function Number */
165 u8 hotkey_number; /* Hotkey Number */
166 u16 devices; /* Set Device */
167 u8 volume_value; /* Volume Value */
168 } __attribute__((packed));
169
170 struct wmid3_gds_get_input_param { /* Get Device Status input parameter */
171 u8 function_num; /* Function Number */
172 u8 hotkey_number; /* Hotkey Number */
173 u16 devices; /* Get Device */
174 } __attribute__((packed));
175
176 struct wmid3_gds_return_value { /* Get Device Status return value*/
177 u8 error_code; /* Error Code */
178 u8 ec_return_value; /* EC Return Value */
179 u16 devices; /* Current Device Status */
180 u32 reserved;
181 } __attribute__((packed));
182
183 struct hotkey_function_type_aa {
184 u8 type;
185 u8 length;
186 u16 handle;
187 u16 commun_func_bitmap;
188 u16 application_func_bitmap;
189 u16 media_func_bitmap;
190 u16 display_func_bitmap;
191 u16 others_func_bitmap;
192 u8 commun_fn_key_number;
193 } __attribute__((packed));
194
195 /*
196 * Interface capability flags
197 */
198 #define ACER_CAP_MAILLED (1<<0)
199 #define ACER_CAP_WIRELESS (1<<1)
200 #define ACER_CAP_BLUETOOTH (1<<2)
201 #define ACER_CAP_BRIGHTNESS (1<<3)
202 #define ACER_CAP_THREEG (1<<4)
203 #define ACER_CAP_ANY (0xFFFFFFFF)
204
205 /*
206 * Interface type flags
207 */
208 enum interface_flags {
209 ACER_AMW0,
210 ACER_AMW0_V2,
211 ACER_WMID,
212 ACER_WMID_v2,
213 };
214
215 #define ACER_DEFAULT_WIRELESS 0
216 #define ACER_DEFAULT_BLUETOOTH 0
217 #define ACER_DEFAULT_MAILLED 0
218 #define ACER_DEFAULT_THREEG 0
219
220 static int max_brightness = 0xF;
221
222 static int mailled = -1;
223 static int brightness = -1;
224 static int threeg = -1;
225 static int force_series;
226 static bool ec_raw_mode;
227 static bool has_type_aa;
228 static u16 commun_func_bitmap;
229 static u8 commun_fn_key_number;
230
231 module_param(mailled, int, 0444);
232 module_param(brightness, int, 0444);
233 module_param(threeg, int, 0444);
234 module_param(force_series, int, 0444);
235 module_param(ec_raw_mode, bool, 0444);
236 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
237 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
238 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
239 MODULE_PARM_DESC(force_series, "Force a different laptop series");
240 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
241
242 struct acer_data {
243 int mailled;
244 int threeg;
245 int brightness;
246 };
247
248 struct acer_debug {
249 struct dentry *root;
250 struct dentry *devices;
251 u32 wmid_devices;
252 };
253
254 static struct rfkill *wireless_rfkill;
255 static struct rfkill *bluetooth_rfkill;
256 static struct rfkill *threeg_rfkill;
257 static bool rfkill_inited;
258
259 /* Each low-level interface must define at least some of the following */
260 struct wmi_interface {
261 /* The WMI device type */
262 u32 type;
263
264 /* The capabilities this interface provides */
265 u32 capability;
266
267 /* Private data for the current interface */
268 struct acer_data data;
269
270 /* debugfs entries associated with this interface */
271 struct acer_debug debug;
272 };
273
274 /* The static interface pointer, points to the currently detected interface */
275 static struct wmi_interface *interface;
276
277 /*
278 * Embedded Controller quirks
279 * Some laptops require us to directly access the EC to either enable or query
280 * features that are not available through WMI.
281 */
282
283 struct quirk_entry {
284 u8 wireless;
285 u8 mailled;
286 s8 brightness;
287 u8 bluetooth;
288 };
289
290 static struct quirk_entry *quirks;
291
292 static void set_quirks(void)
293 {
294 if (!interface)
295 return;
296
297 if (quirks->mailled)
298 interface->capability |= ACER_CAP_MAILLED;
299
300 if (quirks->brightness)
301 interface->capability |= ACER_CAP_BRIGHTNESS;
302 }
303
304 static int dmi_matched(const struct dmi_system_id *dmi)
305 {
306 quirks = dmi->driver_data;
307 return 1;
308 }
309
310 static struct quirk_entry quirk_unknown = {
311 };
312
313 static struct quirk_entry quirk_acer_aspire_1520 = {
314 .brightness = -1,
315 };
316
317 static struct quirk_entry quirk_acer_travelmate_2490 = {
318 .mailled = 1,
319 };
320
321 /* This AMW0 laptop has no bluetooth */
322 static struct quirk_entry quirk_medion_md_98300 = {
323 .wireless = 1,
324 };
325
326 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
327 .wireless = 2,
328 };
329
330 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
331 .wireless = 3,
332 };
333
334 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
335 static struct dmi_system_id __devinitdata acer_blacklist[] = {
336 {
337 .ident = "Acer Aspire One (SSD)",
338 .matches = {
339 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
340 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
341 },
342 },
343 {
344 .ident = "Acer Aspire One (HDD)",
345 .matches = {
346 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
347 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
348 },
349 },
350 {}
351 };
352
353 static struct dmi_system_id acer_quirks[] = {
354 {
355 .callback = dmi_matched,
356 .ident = "Acer Aspire 1360",
357 .matches = {
358 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
359 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
360 },
361 .driver_data = &quirk_acer_aspire_1520,
362 },
363 {
364 .callback = dmi_matched,
365 .ident = "Acer Aspire 1520",
366 .matches = {
367 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
368 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
369 },
370 .driver_data = &quirk_acer_aspire_1520,
371 },
372 {
373 .callback = dmi_matched,
374 .ident = "Acer Aspire 3100",
375 .matches = {
376 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
377 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
378 },
379 .driver_data = &quirk_acer_travelmate_2490,
380 },
381 {
382 .callback = dmi_matched,
383 .ident = "Acer Aspire 3610",
384 .matches = {
385 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
386 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
387 },
388 .driver_data = &quirk_acer_travelmate_2490,
389 },
390 {
391 .callback = dmi_matched,
392 .ident = "Acer Aspire 5100",
393 .matches = {
394 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
395 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
396 },
397 .driver_data = &quirk_acer_travelmate_2490,
398 },
399 {
400 .callback = dmi_matched,
401 .ident = "Acer Aspire 5610",
402 .matches = {
403 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
404 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
405 },
406 .driver_data = &quirk_acer_travelmate_2490,
407 },
408 {
409 .callback = dmi_matched,
410 .ident = "Acer Aspire 5630",
411 .matches = {
412 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
413 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
414 },
415 .driver_data = &quirk_acer_travelmate_2490,
416 },
417 {
418 .callback = dmi_matched,
419 .ident = "Acer Aspire 5650",
420 .matches = {
421 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
422 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
423 },
424 .driver_data = &quirk_acer_travelmate_2490,
425 },
426 {
427 .callback = dmi_matched,
428 .ident = "Acer Aspire 5680",
429 .matches = {
430 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
431 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
432 },
433 .driver_data = &quirk_acer_travelmate_2490,
434 },
435 {
436 .callback = dmi_matched,
437 .ident = "Acer Aspire 9110",
438 .matches = {
439 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
440 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
441 },
442 .driver_data = &quirk_acer_travelmate_2490,
443 },
444 {
445 .callback = dmi_matched,
446 .ident = "Acer TravelMate 2490",
447 .matches = {
448 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
449 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
450 },
451 .driver_data = &quirk_acer_travelmate_2490,
452 },
453 {
454 .callback = dmi_matched,
455 .ident = "Acer TravelMate 4200",
456 .matches = {
457 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
458 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
459 },
460 .driver_data = &quirk_acer_travelmate_2490,
461 },
462 {
463 .callback = dmi_matched,
464 .ident = "Fujitsu Siemens Amilo Li 1718",
465 .matches = {
466 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
467 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
468 },
469 .driver_data = &quirk_fujitsu_amilo_li_1718,
470 },
471 {
472 .callback = dmi_matched,
473 .ident = "Medion MD 98300",
474 .matches = {
475 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
476 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
477 },
478 .driver_data = &quirk_medion_md_98300,
479 },
480 {
481 .callback = dmi_matched,
482 .ident = "Lenovo Ideapad S205",
483 .matches = {
484 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
485 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
486 },
487 .driver_data = &quirk_lenovo_ideapad_s205,
488 },
489 {
490 .callback = dmi_matched,
491 .ident = "Lenovo Ideapad S205 (Brazos)",
492 .matches = {
493 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
494 DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
495 },
496 .driver_data = &quirk_lenovo_ideapad_s205,
497 },
498 {
499 .callback = dmi_matched,
500 .ident = "Lenovo 3000 N200",
501 .matches = {
502 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
503 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
504 },
505 .driver_data = &quirk_fujitsu_amilo_li_1718,
506 },
507 {}
508 };
509
510 static int video_set_backlight_video_vendor(const struct dmi_system_id *d)
511 {
512 interface->capability &= ~ACER_CAP_BRIGHTNESS;
513 pr_info("Brightness must be controlled by generic video driver\n");
514 return 0;
515 }
516
517 static const struct dmi_system_id video_vendor_dmi_table[] = {
518 {
519 .callback = video_set_backlight_video_vendor,
520 .ident = "Acer TravelMate 4750",
521 .matches = {
522 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
523 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
524 },
525 },
526 {}
527 };
528
529 /* Find which quirks are needed for a particular vendor/ model pair */
530 static void find_quirks(void)
531 {
532 if (!force_series) {
533 dmi_check_system(acer_quirks);
534 } else if (force_series == 2490) {
535 quirks = &quirk_acer_travelmate_2490;
536 }
537
538 if (quirks == NULL)
539 quirks = &quirk_unknown;
540
541 set_quirks();
542 }
543
544 /*
545 * General interface convenience methods
546 */
547
548 static bool has_cap(u32 cap)
549 {
550 if ((interface->capability & cap) != 0)
551 return 1;
552
553 return 0;
554 }
555
556 /*
557 * AMW0 (V1) interface
558 */
559 struct wmab_args {
560 u32 eax;
561 u32 ebx;
562 u32 ecx;
563 u32 edx;
564 };
565
566 struct wmab_ret {
567 u32 eax;
568 u32 ebx;
569 u32 ecx;
570 u32 edx;
571 u32 eex;
572 };
573
574 static acpi_status wmab_execute(struct wmab_args *regbuf,
575 struct acpi_buffer *result)
576 {
577 struct acpi_buffer input;
578 acpi_status status;
579 input.length = sizeof(struct wmab_args);
580 input.pointer = (u8 *)regbuf;
581
582 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
583
584 return status;
585 }
586
587 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
588 {
589 int err;
590 u8 result;
591
592 switch (cap) {
593 case ACER_CAP_MAILLED:
594 switch (quirks->mailled) {
595 default:
596 err = ec_read(0xA, &result);
597 if (err)
598 return AE_ERROR;
599 *value = (result >> 7) & 0x1;
600 return AE_OK;
601 }
602 break;
603 case ACER_CAP_WIRELESS:
604 switch (quirks->wireless) {
605 case 1:
606 err = ec_read(0x7B, &result);
607 if (err)
608 return AE_ERROR;
609 *value = result & 0x1;
610 return AE_OK;
611 case 2:
612 err = ec_read(0x71, &result);
613 if (err)
614 return AE_ERROR;
615 *value = result & 0x1;
616 return AE_OK;
617 case 3:
618 err = ec_read(0x78, &result);
619 if (err)
620 return AE_ERROR;
621 *value = result & 0x1;
622 return AE_OK;
623 default:
624 err = ec_read(0xA, &result);
625 if (err)
626 return AE_ERROR;
627 *value = (result >> 2) & 0x1;
628 return AE_OK;
629 }
630 break;
631 case ACER_CAP_BLUETOOTH:
632 switch (quirks->bluetooth) {
633 default:
634 err = ec_read(0xA, &result);
635 if (err)
636 return AE_ERROR;
637 *value = (result >> 4) & 0x1;
638 return AE_OK;
639 }
640 break;
641 case ACER_CAP_BRIGHTNESS:
642 switch (quirks->brightness) {
643 default:
644 err = ec_read(0x83, &result);
645 if (err)
646 return AE_ERROR;
647 *value = result;
648 return AE_OK;
649 }
650 break;
651 default:
652 return AE_ERROR;
653 }
654 return AE_OK;
655 }
656
657 static acpi_status AMW0_set_u32(u32 value, u32 cap)
658 {
659 struct wmab_args args;
660
661 args.eax = ACER_AMW0_WRITE;
662 args.ebx = value ? (1<<8) : 0;
663 args.ecx = args.edx = 0;
664
665 switch (cap) {
666 case ACER_CAP_MAILLED:
667 if (value > 1)
668 return AE_BAD_PARAMETER;
669 args.ebx |= ACER_AMW0_MAILLED_MASK;
670 break;
671 case ACER_CAP_WIRELESS:
672 if (value > 1)
673 return AE_BAD_PARAMETER;
674 args.ebx |= ACER_AMW0_WIRELESS_MASK;
675 break;
676 case ACER_CAP_BLUETOOTH:
677 if (value > 1)
678 return AE_BAD_PARAMETER;
679 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
680 break;
681 case ACER_CAP_BRIGHTNESS:
682 if (value > max_brightness)
683 return AE_BAD_PARAMETER;
684 switch (quirks->brightness) {
685 default:
686 return ec_write(0x83, value);
687 break;
688 }
689 default:
690 return AE_ERROR;
691 }
692
693 /* Actually do the set */
694 return wmab_execute(&args, NULL);
695 }
696
697 static acpi_status AMW0_find_mailled(void)
698 {
699 struct wmab_args args;
700 struct wmab_ret ret;
701 acpi_status status = AE_OK;
702 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
703 union acpi_object *obj;
704
705 args.eax = 0x86;
706 args.ebx = args.ecx = args.edx = 0;
707
708 status = wmab_execute(&args, &out);
709 if (ACPI_FAILURE(status))
710 return status;
711
712 obj = (union acpi_object *) out.pointer;
713 if (obj && obj->type == ACPI_TYPE_BUFFER &&
714 obj->buffer.length == sizeof(struct wmab_ret)) {
715 ret = *((struct wmab_ret *) obj->buffer.pointer);
716 } else {
717 kfree(out.pointer);
718 return AE_ERROR;
719 }
720
721 if (ret.eex & 0x1)
722 interface->capability |= ACER_CAP_MAILLED;
723
724 kfree(out.pointer);
725
726 return AE_OK;
727 }
728
729 static int AMW0_set_cap_acpi_check_device_found;
730
731 static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
732 u32 level, void *context, void **retval)
733 {
734 AMW0_set_cap_acpi_check_device_found = 1;
735 return AE_OK;
736 }
737
738 static const struct acpi_device_id norfkill_ids[] = {
739 { "VPC2004", 0},
740 { "IBM0068", 0},
741 { "LEN0068", 0},
742 { "SNY5001", 0}, /* sony-laptop in charge */
743 { "", 0},
744 };
745
746 static int AMW0_set_cap_acpi_check_device(void)
747 {
748 const struct acpi_device_id *id;
749
750 for (id = norfkill_ids; id->id[0]; id++)
751 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
752 NULL, NULL);
753 return AMW0_set_cap_acpi_check_device_found;
754 }
755
756 static acpi_status AMW0_set_capabilities(void)
757 {
758 struct wmab_args args;
759 struct wmab_ret ret;
760 acpi_status status;
761 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
762 union acpi_object *obj;
763
764 /*
765 * On laptops with this strange GUID (non Acer), normal probing doesn't
766 * work.
767 */
768 if (wmi_has_guid(AMW0_GUID2)) {
769 if ((quirks != &quirk_unknown) ||
770 !AMW0_set_cap_acpi_check_device())
771 interface->capability |= ACER_CAP_WIRELESS;
772 return AE_OK;
773 }
774
775 args.eax = ACER_AMW0_WRITE;
776 args.ecx = args.edx = 0;
777
778 args.ebx = 0xa2 << 8;
779 args.ebx |= ACER_AMW0_WIRELESS_MASK;
780
781 status = wmab_execute(&args, &out);
782 if (ACPI_FAILURE(status))
783 return status;
784
785 obj = out.pointer;
786 if (obj && obj->type == ACPI_TYPE_BUFFER &&
787 obj->buffer.length == sizeof(struct wmab_ret)) {
788 ret = *((struct wmab_ret *) obj->buffer.pointer);
789 } else {
790 status = AE_ERROR;
791 goto out;
792 }
793
794 if (ret.eax & 0x1)
795 interface->capability |= ACER_CAP_WIRELESS;
796
797 args.ebx = 2 << 8;
798 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
799
800 /*
801 * It's ok to use existing buffer for next wmab_execute call.
802 * But we need to kfree(out.pointer) if next wmab_execute fail.
803 */
804 status = wmab_execute(&args, &out);
805 if (ACPI_FAILURE(status))
806 goto out;
807
808 obj = (union acpi_object *) out.pointer;
809 if (obj && obj->type == ACPI_TYPE_BUFFER
810 && obj->buffer.length == sizeof(struct wmab_ret)) {
811 ret = *((struct wmab_ret *) obj->buffer.pointer);
812 } else {
813 status = AE_ERROR;
814 goto out;
815 }
816
817 if (ret.eax & 0x1)
818 interface->capability |= ACER_CAP_BLUETOOTH;
819
820 /*
821 * This appears to be safe to enable, since all Wistron based laptops
822 * appear to use the same EC register for brightness, even if they
823 * differ for wireless, etc
824 */
825 if (quirks->brightness >= 0)
826 interface->capability |= ACER_CAP_BRIGHTNESS;
827
828 status = AE_OK;
829 out:
830 kfree(out.pointer);
831 return status;
832 }
833
834 static struct wmi_interface AMW0_interface = {
835 .type = ACER_AMW0,
836 };
837
838 static struct wmi_interface AMW0_V2_interface = {
839 .type = ACER_AMW0_V2,
840 };
841
842 /*
843 * New interface (The WMID interface)
844 */
845 static acpi_status
846 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
847 {
848 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
849 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
850 union acpi_object *obj;
851 u32 tmp;
852 acpi_status status;
853
854 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
855
856 if (ACPI_FAILURE(status))
857 return status;
858
859 obj = (union acpi_object *) result.pointer;
860 if (obj && obj->type == ACPI_TYPE_BUFFER &&
861 (obj->buffer.length == sizeof(u32) ||
862 obj->buffer.length == sizeof(u64))) {
863 tmp = *((u32 *) obj->buffer.pointer);
864 } else if (obj->type == ACPI_TYPE_INTEGER) {
865 tmp = (u32) obj->integer.value;
866 } else {
867 tmp = 0;
868 }
869
870 if (out)
871 *out = tmp;
872
873 kfree(result.pointer);
874
875 return status;
876 }
877
878 static acpi_status WMID_get_u32(u32 *value, u32 cap)
879 {
880 acpi_status status;
881 u8 tmp;
882 u32 result, method_id = 0;
883
884 switch (cap) {
885 case ACER_CAP_WIRELESS:
886 method_id = ACER_WMID_GET_WIRELESS_METHODID;
887 break;
888 case ACER_CAP_BLUETOOTH:
889 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
890 break;
891 case ACER_CAP_BRIGHTNESS:
892 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
893 break;
894 case ACER_CAP_THREEG:
895 method_id = ACER_WMID_GET_THREEG_METHODID;
896 break;
897 case ACER_CAP_MAILLED:
898 if (quirks->mailled == 1) {
899 ec_read(0x9f, &tmp);
900 *value = tmp & 0x1;
901 return 0;
902 }
903 default:
904 return AE_ERROR;
905 }
906 status = WMI_execute_u32(method_id, 0, &result);
907
908 if (ACPI_SUCCESS(status))
909 *value = (u8)result;
910
911 return status;
912 }
913
914 static acpi_status WMID_set_u32(u32 value, u32 cap)
915 {
916 u32 method_id = 0;
917 char param;
918
919 switch (cap) {
920 case ACER_CAP_BRIGHTNESS:
921 if (value > max_brightness)
922 return AE_BAD_PARAMETER;
923 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
924 break;
925 case ACER_CAP_WIRELESS:
926 if (value > 1)
927 return AE_BAD_PARAMETER;
928 method_id = ACER_WMID_SET_WIRELESS_METHODID;
929 break;
930 case ACER_CAP_BLUETOOTH:
931 if (value > 1)
932 return AE_BAD_PARAMETER;
933 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
934 break;
935 case ACER_CAP_THREEG:
936 if (value > 1)
937 return AE_BAD_PARAMETER;
938 method_id = ACER_WMID_SET_THREEG_METHODID;
939 break;
940 case ACER_CAP_MAILLED:
941 if (value > 1)
942 return AE_BAD_PARAMETER;
943 if (quirks->mailled == 1) {
944 param = value ? 0x92 : 0x93;
945 i8042_lock_chip();
946 i8042_command(&param, 0x1059);
947 i8042_unlock_chip();
948 return 0;
949 }
950 break;
951 default:
952 return AE_ERROR;
953 }
954 return WMI_execute_u32(method_id, (u32)value, NULL);
955 }
956
957 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
958 {
959 struct wmid3_gds_return_value return_value;
960 acpi_status status;
961 union acpi_object *obj;
962 struct wmid3_gds_get_input_param params = {
963 .function_num = 0x1,
964 .hotkey_number = commun_fn_key_number,
965 .devices = device,
966 };
967 struct acpi_buffer input = {
968 sizeof(struct wmid3_gds_get_input_param),
969 &params
970 };
971 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
972
973 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
974 if (ACPI_FAILURE(status))
975 return status;
976
977 obj = output.pointer;
978
979 if (!obj)
980 return AE_ERROR;
981 else if (obj->type != ACPI_TYPE_BUFFER) {
982 kfree(obj);
983 return AE_ERROR;
984 }
985 if (obj->buffer.length != 8) {
986 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
987 kfree(obj);
988 return AE_ERROR;
989 }
990
991 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
992 kfree(obj);
993
994 if (return_value.error_code || return_value.ec_return_value)
995 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
996 device,
997 return_value.error_code,
998 return_value.ec_return_value);
999 else
1000 *value = !!(return_value.devices & device);
1001
1002 return status;
1003 }
1004
1005 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1006 {
1007 u16 device;
1008
1009 switch (cap) {
1010 case ACER_CAP_WIRELESS:
1011 device = ACER_WMID3_GDS_WIRELESS;
1012 break;
1013 case ACER_CAP_BLUETOOTH:
1014 device = ACER_WMID3_GDS_BLUETOOTH;
1015 break;
1016 case ACER_CAP_THREEG:
1017 device = ACER_WMID3_GDS_THREEG;
1018 break;
1019 default:
1020 return AE_ERROR;
1021 }
1022 return wmid3_get_device_status(value, device);
1023 }
1024
1025 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1026 {
1027 struct wmid3_gds_return_value return_value;
1028 acpi_status status;
1029 union acpi_object *obj;
1030 u16 devices;
1031 struct wmid3_gds_get_input_param get_params = {
1032 .function_num = 0x1,
1033 .hotkey_number = commun_fn_key_number,
1034 .devices = commun_func_bitmap,
1035 };
1036 struct acpi_buffer get_input = {
1037 sizeof(struct wmid3_gds_get_input_param),
1038 &get_params
1039 };
1040 struct wmid3_gds_set_input_param set_params = {
1041 .function_num = 0x2,
1042 .hotkey_number = commun_fn_key_number,
1043 .devices = commun_func_bitmap,
1044 };
1045 struct acpi_buffer set_input = {
1046 sizeof(struct wmid3_gds_set_input_param),
1047 &set_params
1048 };
1049 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1050 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1051
1052 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1053 if (ACPI_FAILURE(status))
1054 return status;
1055
1056 obj = output.pointer;
1057
1058 if (!obj)
1059 return AE_ERROR;
1060 else if (obj->type != ACPI_TYPE_BUFFER) {
1061 kfree(obj);
1062 return AE_ERROR;
1063 }
1064 if (obj->buffer.length != 8) {
1065 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1066 kfree(obj);
1067 return AE_ERROR;
1068 }
1069
1070 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1071 kfree(obj);
1072
1073 if (return_value.error_code || return_value.ec_return_value) {
1074 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1075 return_value.error_code,
1076 return_value.ec_return_value);
1077 return status;
1078 }
1079
1080 devices = return_value.devices;
1081 set_params.devices = (value) ? (devices | device) : (devices & ~device);
1082
1083 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1084 if (ACPI_FAILURE(status))
1085 return status;
1086
1087 obj = output2.pointer;
1088
1089 if (!obj)
1090 return AE_ERROR;
1091 else if (obj->type != ACPI_TYPE_BUFFER) {
1092 kfree(obj);
1093 return AE_ERROR;
1094 }
1095 if (obj->buffer.length != 4) {
1096 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1097 kfree(obj);
1098 return AE_ERROR;
1099 }
1100
1101 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1102 kfree(obj);
1103
1104 if (return_value.error_code || return_value.ec_return_value)
1105 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1106 return_value.error_code,
1107 return_value.ec_return_value);
1108
1109 return status;
1110 }
1111
1112 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1113 {
1114 u16 device;
1115
1116 switch (cap) {
1117 case ACER_CAP_WIRELESS:
1118 device = ACER_WMID3_GDS_WIRELESS;
1119 break;
1120 case ACER_CAP_BLUETOOTH:
1121 device = ACER_WMID3_GDS_BLUETOOTH;
1122 break;
1123 case ACER_CAP_THREEG:
1124 device = ACER_WMID3_GDS_THREEG;
1125 break;
1126 default:
1127 return AE_ERROR;
1128 }
1129 return wmid3_set_device_status(value, device);
1130 }
1131
1132 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1133 {
1134 struct hotkey_function_type_aa *type_aa;
1135
1136 /* We are looking for OEM-specific Type AAh */
1137 if (header->type != 0xAA)
1138 return;
1139
1140 has_type_aa = true;
1141 type_aa = (struct hotkey_function_type_aa *) header;
1142
1143 pr_info("Function bitmap for Communication Button: 0x%x\n",
1144 type_aa->commun_func_bitmap);
1145 commun_func_bitmap = type_aa->commun_func_bitmap;
1146
1147 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1148 interface->capability |= ACER_CAP_WIRELESS;
1149 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1150 interface->capability |= ACER_CAP_THREEG;
1151 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1152 interface->capability |= ACER_CAP_BLUETOOTH;
1153
1154 commun_fn_key_number = type_aa->commun_fn_key_number;
1155 }
1156
1157 static acpi_status WMID_set_capabilities(void)
1158 {
1159 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1160 union acpi_object *obj;
1161 acpi_status status;
1162 u32 devices;
1163
1164 status = wmi_query_block(WMID_GUID2, 1, &out);
1165 if (ACPI_FAILURE(status))
1166 return status;
1167
1168 obj = (union acpi_object *) out.pointer;
1169 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1170 (obj->buffer.length == sizeof(u32) ||
1171 obj->buffer.length == sizeof(u64))) {
1172 devices = *((u32 *) obj->buffer.pointer);
1173 } else if (obj->type == ACPI_TYPE_INTEGER) {
1174 devices = (u32) obj->integer.value;
1175 } else {
1176 kfree(out.pointer);
1177 return AE_ERROR;
1178 }
1179
1180 pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1181 if (devices & 0x07)
1182 interface->capability |= ACER_CAP_WIRELESS;
1183 if (devices & 0x40)
1184 interface->capability |= ACER_CAP_THREEG;
1185 if (devices & 0x10)
1186 interface->capability |= ACER_CAP_BLUETOOTH;
1187
1188 if (!(devices & 0x20))
1189 max_brightness = 0x9;
1190
1191 kfree(out.pointer);
1192 return status;
1193 }
1194
1195 static struct wmi_interface wmid_interface = {
1196 .type = ACER_WMID,
1197 };
1198
1199 static struct wmi_interface wmid_v2_interface = {
1200 .type = ACER_WMID_v2,
1201 };
1202
1203 /*
1204 * Generic Device (interface-independent)
1205 */
1206
1207 static acpi_status get_u32(u32 *value, u32 cap)
1208 {
1209 acpi_status status = AE_ERROR;
1210
1211 switch (interface->type) {
1212 case ACER_AMW0:
1213 status = AMW0_get_u32(value, cap);
1214 break;
1215 case ACER_AMW0_V2:
1216 if (cap == ACER_CAP_MAILLED) {
1217 status = AMW0_get_u32(value, cap);
1218 break;
1219 }
1220 case ACER_WMID:
1221 status = WMID_get_u32(value, cap);
1222 break;
1223 case ACER_WMID_v2:
1224 if (cap & (ACER_CAP_WIRELESS |
1225 ACER_CAP_BLUETOOTH |
1226 ACER_CAP_THREEG))
1227 status = wmid_v2_get_u32(value, cap);
1228 else if (wmi_has_guid(WMID_GUID2))
1229 status = WMID_get_u32(value, cap);
1230 break;
1231 }
1232
1233 return status;
1234 }
1235
1236 static acpi_status set_u32(u32 value, u32 cap)
1237 {
1238 acpi_status status;
1239
1240 if (interface->capability & cap) {
1241 switch (interface->type) {
1242 case ACER_AMW0:
1243 return AMW0_set_u32(value, cap);
1244 case ACER_AMW0_V2:
1245 if (cap == ACER_CAP_MAILLED)
1246 return AMW0_set_u32(value, cap);
1247
1248 /*
1249 * On some models, some WMID methods don't toggle
1250 * properly. For those cases, we want to run the AMW0
1251 * method afterwards to be certain we've really toggled
1252 * the device state.
1253 */
1254 if (cap == ACER_CAP_WIRELESS ||
1255 cap == ACER_CAP_BLUETOOTH) {
1256 status = WMID_set_u32(value, cap);
1257 if (ACPI_FAILURE(status))
1258 return status;
1259
1260 return AMW0_set_u32(value, cap);
1261 }
1262 case ACER_WMID:
1263 return WMID_set_u32(value, cap);
1264 case ACER_WMID_v2:
1265 if (cap & (ACER_CAP_WIRELESS |
1266 ACER_CAP_BLUETOOTH |
1267 ACER_CAP_THREEG))
1268 return wmid_v2_set_u32(value, cap);
1269 else if (wmi_has_guid(WMID_GUID2))
1270 return WMID_set_u32(value, cap);
1271 default:
1272 return AE_BAD_PARAMETER;
1273 }
1274 }
1275 return AE_BAD_PARAMETER;
1276 }
1277
1278 static void __init acer_commandline_init(void)
1279 {
1280 /*
1281 * These will all fail silently if the value given is invalid, or the
1282 * capability isn't available on the given interface
1283 */
1284 if (mailled >= 0)
1285 set_u32(mailled, ACER_CAP_MAILLED);
1286 if (!has_type_aa && threeg >= 0)
1287 set_u32(threeg, ACER_CAP_THREEG);
1288 if (brightness >= 0)
1289 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1290 }
1291
1292 /*
1293 * LED device (Mail LED only, no other LEDs known yet)
1294 */
1295 static void mail_led_set(struct led_classdev *led_cdev,
1296 enum led_brightness value)
1297 {
1298 set_u32(value, ACER_CAP_MAILLED);
1299 }
1300
1301 static struct led_classdev mail_led = {
1302 .name = "acer-wmi::mail",
1303 .brightness_set = mail_led_set,
1304 };
1305
1306 static int __devinit acer_led_init(struct device *dev)
1307 {
1308 return led_classdev_register(dev, &mail_led);
1309 }
1310
1311 static void acer_led_exit(void)
1312 {
1313 set_u32(LED_OFF, ACER_CAP_MAILLED);
1314 led_classdev_unregister(&mail_led);
1315 }
1316
1317 /*
1318 * Backlight device
1319 */
1320 static struct backlight_device *acer_backlight_device;
1321
1322 static int read_brightness(struct backlight_device *bd)
1323 {
1324 u32 value;
1325 get_u32(&value, ACER_CAP_BRIGHTNESS);
1326 return value;
1327 }
1328
1329 static int update_bl_status(struct backlight_device *bd)
1330 {
1331 int intensity = bd->props.brightness;
1332
1333 if (bd->props.power != FB_BLANK_UNBLANK)
1334 intensity = 0;
1335 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1336 intensity = 0;
1337
1338 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1339
1340 return 0;
1341 }
1342
1343 static const struct backlight_ops acer_bl_ops = {
1344 .get_brightness = read_brightness,
1345 .update_status = update_bl_status,
1346 };
1347
1348 static int __devinit acer_backlight_init(struct device *dev)
1349 {
1350 struct backlight_properties props;
1351 struct backlight_device *bd;
1352
1353 memset(&props, 0, sizeof(struct backlight_properties));
1354 props.type = BACKLIGHT_PLATFORM;
1355 props.max_brightness = max_brightness;
1356 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1357 &props);
1358 if (IS_ERR(bd)) {
1359 pr_err("Could not register Acer backlight device\n");
1360 acer_backlight_device = NULL;
1361 return PTR_ERR(bd);
1362 }
1363
1364 acer_backlight_device = bd;
1365
1366 bd->props.power = FB_BLANK_UNBLANK;
1367 bd->props.brightness = read_brightness(bd);
1368 backlight_update_status(bd);
1369 return 0;
1370 }
1371
1372 static void acer_backlight_exit(void)
1373 {
1374 backlight_device_unregister(acer_backlight_device);
1375 }
1376
1377 /*
1378 * Rfkill devices
1379 */
1380 static void acer_rfkill_update(struct work_struct *ignored);
1381 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1382 static void acer_rfkill_update(struct work_struct *ignored)
1383 {
1384 u32 state;
1385 acpi_status status;
1386
1387 if (has_cap(ACER_CAP_WIRELESS)) {
1388 status = get_u32(&state, ACER_CAP_WIRELESS);
1389 if (ACPI_SUCCESS(status)) {
1390 if (quirks->wireless == 3)
1391 rfkill_set_hw_state(wireless_rfkill, !state);
1392 else
1393 rfkill_set_sw_state(wireless_rfkill, !state);
1394 }
1395 }
1396
1397 if (has_cap(ACER_CAP_BLUETOOTH)) {
1398 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1399 if (ACPI_SUCCESS(status))
1400 rfkill_set_sw_state(bluetooth_rfkill, !state);
1401 }
1402
1403 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1404 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1405 if (ACPI_SUCCESS(status))
1406 rfkill_set_sw_state(threeg_rfkill, !state);
1407 }
1408
1409 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1410 }
1411
1412 static int acer_rfkill_set(void *data, bool blocked)
1413 {
1414 acpi_status status;
1415 u32 cap = (unsigned long)data;
1416
1417 if (rfkill_inited) {
1418 status = set_u32(!blocked, cap);
1419 if (ACPI_FAILURE(status))
1420 return -ENODEV;
1421 }
1422
1423 return 0;
1424 }
1425
1426 static const struct rfkill_ops acer_rfkill_ops = {
1427 .set_block = acer_rfkill_set,
1428 };
1429
1430 static struct rfkill *acer_rfkill_register(struct device *dev,
1431 enum rfkill_type type,
1432 char *name, u32 cap)
1433 {
1434 int err;
1435 struct rfkill *rfkill_dev;
1436 u32 state;
1437 acpi_status status;
1438
1439 rfkill_dev = rfkill_alloc(name, dev, type,
1440 &acer_rfkill_ops,
1441 (void *)(unsigned long)cap);
1442 if (!rfkill_dev)
1443 return ERR_PTR(-ENOMEM);
1444
1445 status = get_u32(&state, cap);
1446
1447 err = rfkill_register(rfkill_dev);
1448 if (err) {
1449 rfkill_destroy(rfkill_dev);
1450 return ERR_PTR(err);
1451 }
1452
1453 if (ACPI_SUCCESS(status))
1454 rfkill_set_sw_state(rfkill_dev, !state);
1455
1456 return rfkill_dev;
1457 }
1458
1459 static int acer_rfkill_init(struct device *dev)
1460 {
1461 int err;
1462
1463 if (has_cap(ACER_CAP_WIRELESS)) {
1464 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1465 "acer-wireless", ACER_CAP_WIRELESS);
1466 if (IS_ERR(wireless_rfkill)) {
1467 err = PTR_ERR(wireless_rfkill);
1468 goto error_wireless;
1469 }
1470 }
1471
1472 if (has_cap(ACER_CAP_BLUETOOTH)) {
1473 bluetooth_rfkill = acer_rfkill_register(dev,
1474 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1475 ACER_CAP_BLUETOOTH);
1476 if (IS_ERR(bluetooth_rfkill)) {
1477 err = PTR_ERR(bluetooth_rfkill);
1478 goto error_bluetooth;
1479 }
1480 }
1481
1482 if (has_cap(ACER_CAP_THREEG)) {
1483 threeg_rfkill = acer_rfkill_register(dev,
1484 RFKILL_TYPE_WWAN, "acer-threeg",
1485 ACER_CAP_THREEG);
1486 if (IS_ERR(threeg_rfkill)) {
1487 err = PTR_ERR(threeg_rfkill);
1488 goto error_threeg;
1489 }
1490 }
1491
1492 rfkill_inited = true;
1493
1494 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1495 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1496 schedule_delayed_work(&acer_rfkill_work,
1497 round_jiffies_relative(HZ));
1498
1499 return 0;
1500
1501 error_threeg:
1502 if (has_cap(ACER_CAP_BLUETOOTH)) {
1503 rfkill_unregister(bluetooth_rfkill);
1504 rfkill_destroy(bluetooth_rfkill);
1505 }
1506 error_bluetooth:
1507 if (has_cap(ACER_CAP_WIRELESS)) {
1508 rfkill_unregister(wireless_rfkill);
1509 rfkill_destroy(wireless_rfkill);
1510 }
1511 error_wireless:
1512 return err;
1513 }
1514
1515 static void acer_rfkill_exit(void)
1516 {
1517 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1518 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1519 cancel_delayed_work_sync(&acer_rfkill_work);
1520
1521 if (has_cap(ACER_CAP_WIRELESS)) {
1522 rfkill_unregister(wireless_rfkill);
1523 rfkill_destroy(wireless_rfkill);
1524 }
1525
1526 if (has_cap(ACER_CAP_BLUETOOTH)) {
1527 rfkill_unregister(bluetooth_rfkill);
1528 rfkill_destroy(bluetooth_rfkill);
1529 }
1530
1531 if (has_cap(ACER_CAP_THREEG)) {
1532 rfkill_unregister(threeg_rfkill);
1533 rfkill_destroy(threeg_rfkill);
1534 }
1535 return;
1536 }
1537
1538 /*
1539 * sysfs interface
1540 */
1541 static ssize_t show_bool_threeg(struct device *dev,
1542 struct device_attribute *attr, char *buf)
1543 {
1544 u32 result; \
1545 acpi_status status;
1546
1547 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1548 current->comm);
1549 status = get_u32(&result, ACER_CAP_THREEG);
1550 if (ACPI_SUCCESS(status))
1551 return sprintf(buf, "%u\n", result);
1552 return sprintf(buf, "Read error\n");
1553 }
1554
1555 static ssize_t set_bool_threeg(struct device *dev,
1556 struct device_attribute *attr, const char *buf, size_t count)
1557 {
1558 u32 tmp = simple_strtoul(buf, NULL, 10);
1559 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1560 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1561 current->comm);
1562 if (ACPI_FAILURE(status))
1563 return -EINVAL;
1564 return count;
1565 }
1566 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1567 set_bool_threeg);
1568
1569 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1570 char *buf)
1571 {
1572 pr_info("This interface sysfs will be removed in 2012 - used by: %s\n",
1573 current->comm);
1574 switch (interface->type) {
1575 case ACER_AMW0:
1576 return sprintf(buf, "AMW0\n");
1577 case ACER_AMW0_V2:
1578 return sprintf(buf, "AMW0 v2\n");
1579 case ACER_WMID:
1580 return sprintf(buf, "WMID\n");
1581 case ACER_WMID_v2:
1582 return sprintf(buf, "WMID v2\n");
1583 default:
1584 return sprintf(buf, "Error!\n");
1585 }
1586 }
1587
1588 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1589
1590 static void acer_wmi_notify(u32 value, void *context)
1591 {
1592 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1593 union acpi_object *obj;
1594 struct event_return_value return_value;
1595 acpi_status status;
1596 u16 device_state;
1597 const struct key_entry *key;
1598
1599 status = wmi_get_event_data(value, &response);
1600 if (status != AE_OK) {
1601 pr_warn("bad event status 0x%x\n", status);
1602 return;
1603 }
1604
1605 obj = (union acpi_object *)response.pointer;
1606
1607 if (!obj)
1608 return;
1609 if (obj->type != ACPI_TYPE_BUFFER) {
1610 pr_warn("Unknown response received %d\n", obj->type);
1611 kfree(obj);
1612 return;
1613 }
1614 if (obj->buffer.length != 8) {
1615 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1616 kfree(obj);
1617 return;
1618 }
1619
1620 return_value = *((struct event_return_value *)obj->buffer.pointer);
1621 kfree(obj);
1622
1623 switch (return_value.function) {
1624 case WMID_HOTKEY_EVENT:
1625 device_state = return_value.device_state;
1626 pr_debug("device state: 0x%x\n", device_state);
1627
1628 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1629 return_value.key_num);
1630 if (!key) {
1631 pr_warn("Unknown key number - 0x%x\n",
1632 return_value.key_num);
1633 } else {
1634 switch (key->keycode) {
1635 case KEY_WLAN:
1636 case KEY_BLUETOOTH:
1637 if (has_cap(ACER_CAP_WIRELESS))
1638 rfkill_set_sw_state(wireless_rfkill,
1639 !(device_state & ACER_WMID3_GDS_WIRELESS));
1640 if (has_cap(ACER_CAP_THREEG))
1641 rfkill_set_sw_state(threeg_rfkill,
1642 !(device_state & ACER_WMID3_GDS_THREEG));
1643 if (has_cap(ACER_CAP_BLUETOOTH))
1644 rfkill_set_sw_state(bluetooth_rfkill,
1645 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1646 break;
1647 }
1648 sparse_keymap_report_entry(acer_wmi_input_dev, key,
1649 1, true);
1650 }
1651 break;
1652 default:
1653 pr_warn("Unknown function number - %d - %d\n",
1654 return_value.function, return_value.key_num);
1655 break;
1656 }
1657 }
1658
1659 static acpi_status
1660 wmid3_set_lm_mode(struct lm_input_params *params,
1661 struct lm_return_value *return_value)
1662 {
1663 acpi_status status;
1664 union acpi_object *obj;
1665
1666 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1667 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1668
1669 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1670 if (ACPI_FAILURE(status))
1671 return status;
1672
1673 obj = output.pointer;
1674
1675 if (!obj)
1676 return AE_ERROR;
1677 else if (obj->type != ACPI_TYPE_BUFFER) {
1678 kfree(obj);
1679 return AE_ERROR;
1680 }
1681 if (obj->buffer.length != 4) {
1682 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1683 kfree(obj);
1684 return AE_ERROR;
1685 }
1686
1687 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1688 kfree(obj);
1689
1690 return status;
1691 }
1692
1693 static int acer_wmi_enable_ec_raw(void)
1694 {
1695 struct lm_return_value return_value;
1696 acpi_status status;
1697 struct lm_input_params params = {
1698 .function_num = 0x1,
1699 .commun_devices = 0xFFFF,
1700 .devices = 0xFFFF,
1701 .lm_status = 0x00, /* Launch Manager Deactive */
1702 };
1703
1704 status = wmid3_set_lm_mode(&params, &return_value);
1705
1706 if (return_value.error_code || return_value.ec_return_value)
1707 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1708 return_value.error_code,
1709 return_value.ec_return_value);
1710 else
1711 pr_info("Enabled EC raw mode\n");
1712
1713 return status;
1714 }
1715
1716 static int acer_wmi_enable_lm(void)
1717 {
1718 struct lm_return_value return_value;
1719 acpi_status status;
1720 struct lm_input_params params = {
1721 .function_num = 0x1,
1722 .commun_devices = 0xFFFF,
1723 .devices = 0xFFFF,
1724 .lm_status = 0x01, /* Launch Manager Active */
1725 };
1726
1727 status = wmid3_set_lm_mode(&params, &return_value);
1728
1729 if (return_value.error_code || return_value.ec_return_value)
1730 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1731 return_value.error_code,
1732 return_value.ec_return_value);
1733
1734 return status;
1735 }
1736
1737 static int __init acer_wmi_input_setup(void)
1738 {
1739 acpi_status status;
1740 int err;
1741
1742 acer_wmi_input_dev = input_allocate_device();
1743 if (!acer_wmi_input_dev)
1744 return -ENOMEM;
1745
1746 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1747 acer_wmi_input_dev->phys = "wmi/input0";
1748 acer_wmi_input_dev->id.bustype = BUS_HOST;
1749
1750 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1751 if (err)
1752 goto err_free_dev;
1753
1754 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1755 acer_wmi_notify, NULL);
1756 if (ACPI_FAILURE(status)) {
1757 err = -EIO;
1758 goto err_free_keymap;
1759 }
1760
1761 err = input_register_device(acer_wmi_input_dev);
1762 if (err)
1763 goto err_uninstall_notifier;
1764
1765 return 0;
1766
1767 err_uninstall_notifier:
1768 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1769 err_free_keymap:
1770 sparse_keymap_free(acer_wmi_input_dev);
1771 err_free_dev:
1772 input_free_device(acer_wmi_input_dev);
1773 return err;
1774 }
1775
1776 static void acer_wmi_input_destroy(void)
1777 {
1778 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1779 sparse_keymap_free(acer_wmi_input_dev);
1780 input_unregister_device(acer_wmi_input_dev);
1781 }
1782
1783 /*
1784 * debugfs functions
1785 */
1786 static u32 get_wmid_devices(void)
1787 {
1788 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1789 union acpi_object *obj;
1790 acpi_status status;
1791 u32 devices = 0;
1792
1793 status = wmi_query_block(WMID_GUID2, 1, &out);
1794 if (ACPI_FAILURE(status))
1795 return 0;
1796
1797 obj = (union acpi_object *) out.pointer;
1798 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1799 (obj->buffer.length == sizeof(u32) ||
1800 obj->buffer.length == sizeof(u64))) {
1801 devices = *((u32 *) obj->buffer.pointer);
1802 } else if (obj->type == ACPI_TYPE_INTEGER) {
1803 devices = (u32) obj->integer.value;
1804 }
1805
1806 kfree(out.pointer);
1807 return devices;
1808 }
1809
1810 /*
1811 * Platform device
1812 */
1813 static int __devinit acer_platform_probe(struct platform_device *device)
1814 {
1815 int err;
1816
1817 if (has_cap(ACER_CAP_MAILLED)) {
1818 err = acer_led_init(&device->dev);
1819 if (err)
1820 goto error_mailled;
1821 }
1822
1823 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1824 err = acer_backlight_init(&device->dev);
1825 if (err)
1826 goto error_brightness;
1827 }
1828
1829 err = acer_rfkill_init(&device->dev);
1830 if (err)
1831 goto error_rfkill;
1832
1833 return err;
1834
1835 error_rfkill:
1836 if (has_cap(ACER_CAP_BRIGHTNESS))
1837 acer_backlight_exit();
1838 error_brightness:
1839 if (has_cap(ACER_CAP_MAILLED))
1840 acer_led_exit();
1841 error_mailled:
1842 return err;
1843 }
1844
1845 static int acer_platform_remove(struct platform_device *device)
1846 {
1847 if (has_cap(ACER_CAP_MAILLED))
1848 acer_led_exit();
1849 if (has_cap(ACER_CAP_BRIGHTNESS))
1850 acer_backlight_exit();
1851
1852 acer_rfkill_exit();
1853 return 0;
1854 }
1855
1856 static int acer_platform_suspend(struct platform_device *dev,
1857 pm_message_t state)
1858 {
1859 u32 value;
1860 struct acer_data *data = &interface->data;
1861
1862 if (!data)
1863 return -ENOMEM;
1864
1865 if (has_cap(ACER_CAP_MAILLED)) {
1866 get_u32(&value, ACER_CAP_MAILLED);
1867 set_u32(LED_OFF, ACER_CAP_MAILLED);
1868 data->mailled = value;
1869 }
1870
1871 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1872 get_u32(&value, ACER_CAP_BRIGHTNESS);
1873 data->brightness = value;
1874 }
1875
1876 return 0;
1877 }
1878
1879 static int acer_platform_resume(struct platform_device *device)
1880 {
1881 struct acer_data *data = &interface->data;
1882
1883 if (!data)
1884 return -ENOMEM;
1885
1886 if (has_cap(ACER_CAP_MAILLED))
1887 set_u32(data->mailled, ACER_CAP_MAILLED);
1888
1889 if (has_cap(ACER_CAP_BRIGHTNESS))
1890 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1891
1892 return 0;
1893 }
1894
1895 static void acer_platform_shutdown(struct platform_device *device)
1896 {
1897 struct acer_data *data = &interface->data;
1898
1899 if (!data)
1900 return;
1901
1902 if (has_cap(ACER_CAP_MAILLED))
1903 set_u32(LED_OFF, ACER_CAP_MAILLED);
1904 }
1905
1906 static struct platform_driver acer_platform_driver = {
1907 .driver = {
1908 .name = "acer-wmi",
1909 .owner = THIS_MODULE,
1910 },
1911 .probe = acer_platform_probe,
1912 .remove = acer_platform_remove,
1913 .suspend = acer_platform_suspend,
1914 .resume = acer_platform_resume,
1915 .shutdown = acer_platform_shutdown,
1916 };
1917
1918 static struct platform_device *acer_platform_device;
1919
1920 static int remove_sysfs(struct platform_device *device)
1921 {
1922 if (has_cap(ACER_CAP_THREEG))
1923 device_remove_file(&device->dev, &dev_attr_threeg);
1924
1925 device_remove_file(&device->dev, &dev_attr_interface);
1926
1927 return 0;
1928 }
1929
1930 static int create_sysfs(void)
1931 {
1932 int retval = -ENOMEM;
1933
1934 if (has_cap(ACER_CAP_THREEG)) {
1935 retval = device_create_file(&acer_platform_device->dev,
1936 &dev_attr_threeg);
1937 if (retval)
1938 goto error_sysfs;
1939 }
1940
1941 retval = device_create_file(&acer_platform_device->dev,
1942 &dev_attr_interface);
1943 if (retval)
1944 goto error_sysfs;
1945
1946 return 0;
1947
1948 error_sysfs:
1949 remove_sysfs(acer_platform_device);
1950 return retval;
1951 }
1952
1953 static void remove_debugfs(void)
1954 {
1955 debugfs_remove(interface->debug.devices);
1956 debugfs_remove(interface->debug.root);
1957 }
1958
1959 static int create_debugfs(void)
1960 {
1961 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1962 if (!interface->debug.root) {
1963 pr_err("Failed to create debugfs directory");
1964 return -ENOMEM;
1965 }
1966
1967 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1968 interface->debug.root,
1969 &interface->debug.wmid_devices);
1970 if (!interface->debug.devices)
1971 goto error_debugfs;
1972
1973 return 0;
1974
1975 error_debugfs:
1976 remove_debugfs();
1977 return -ENOMEM;
1978 }
1979
1980 static int __init acer_wmi_init(void)
1981 {
1982 int err;
1983
1984 pr_info("Acer Laptop ACPI-WMI Extras\n");
1985
1986 if (dmi_check_system(acer_blacklist)) {
1987 pr_info("Blacklisted hardware detected - not loading\n");
1988 return -ENODEV;
1989 }
1990
1991 find_quirks();
1992
1993 /*
1994 * Detect which ACPI-WMI interface we're using.
1995 */
1996 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1997 interface = &AMW0_V2_interface;
1998
1999 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2000 interface = &wmid_interface;
2001
2002 if (wmi_has_guid(WMID_GUID3))
2003 interface = &wmid_v2_interface;
2004
2005 if (interface)
2006 dmi_walk(type_aa_dmi_decode, NULL);
2007
2008 if (wmi_has_guid(WMID_GUID2) && interface) {
2009 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2010 pr_err("Unable to detect available WMID devices\n");
2011 return -ENODEV;
2012 }
2013 /* WMID always provides brightness methods */
2014 interface->capability |= ACER_CAP_BRIGHTNESS;
2015 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2016 pr_err("No WMID device detection method found\n");
2017 return -ENODEV;
2018 }
2019
2020 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2021 interface = &AMW0_interface;
2022
2023 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2024 pr_err("Unable to detect available AMW0 devices\n");
2025 return -ENODEV;
2026 }
2027 }
2028
2029 if (wmi_has_guid(AMW0_GUID1))
2030 AMW0_find_mailled();
2031
2032 if (!interface) {
2033 pr_err("No or unsupported WMI interface, unable to load\n");
2034 return -ENODEV;
2035 }
2036
2037 set_quirks();
2038
2039 if (acpi_video_backlight_support()) {
2040 if (dmi_check_system(video_vendor_dmi_table)) {
2041 acpi_video_unregister();
2042 } else {
2043 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2044 pr_info("Brightness must be controlled by "
2045 "acpi video driver\n");
2046 }
2047 }
2048
2049 if (wmi_has_guid(WMID_GUID3)) {
2050 if (ec_raw_mode) {
2051 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2052 pr_err("Cannot enable EC raw mode\n");
2053 return -ENODEV;
2054 }
2055 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2056 pr_err("Cannot enable Launch Manager mode\n");
2057 return -ENODEV;
2058 }
2059 } else if (ec_raw_mode) {
2060 pr_info("No WMID EC raw mode enable method\n");
2061 }
2062
2063 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2064 err = acer_wmi_input_setup();
2065 if (err)
2066 return err;
2067 }
2068
2069 err = platform_driver_register(&acer_platform_driver);
2070 if (err) {
2071 pr_err("Unable to register platform driver\n");
2072 goto error_platform_register;
2073 }
2074
2075 acer_platform_device = platform_device_alloc("acer-wmi", -1);
2076 if (!acer_platform_device) {
2077 err = -ENOMEM;
2078 goto error_device_alloc;
2079 }
2080
2081 err = platform_device_add(acer_platform_device);
2082 if (err)
2083 goto error_device_add;
2084
2085 err = create_sysfs();
2086 if (err)
2087 goto error_create_sys;
2088
2089 if (wmi_has_guid(WMID_GUID2)) {
2090 interface->debug.wmid_devices = get_wmid_devices();
2091 err = create_debugfs();
2092 if (err)
2093 goto error_create_debugfs;
2094 }
2095
2096 /* Override any initial settings with values from the commandline */
2097 acer_commandline_init();
2098
2099 return 0;
2100
2101 error_create_debugfs:
2102 remove_sysfs(acer_platform_device);
2103 error_create_sys:
2104 platform_device_del(acer_platform_device);
2105 error_device_add:
2106 platform_device_put(acer_platform_device);
2107 error_device_alloc:
2108 platform_driver_unregister(&acer_platform_driver);
2109 error_platform_register:
2110 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2111 acer_wmi_input_destroy();
2112
2113 return err;
2114 }
2115
2116 static void __exit acer_wmi_exit(void)
2117 {
2118 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2119 acer_wmi_input_destroy();
2120
2121 remove_sysfs(acer_platform_device);
2122 remove_debugfs();
2123 platform_device_unregister(acer_platform_device);
2124 platform_driver_unregister(&acer_platform_driver);
2125
2126 pr_info("Acer Laptop WMI Extras unloaded\n");
2127 return;
2128 }
2129
2130 module_init(acer_wmi_init);
2131 module_exit(acer_wmi_exit);
Linux with added FPC-III support