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Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[mirror_ubuntu-zesty-kernel.git] / drivers / platform / x86 / acer-wmi.c
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 #include <acpi/video.h>
45
46 MODULE_AUTHOR("Carlos Corbacho");
47 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
48 MODULE_LICENSE("GPL");
49
50 /*
51 * Magic Number
52 * Meaning is unknown - this number is required for writing to ACPI for AMW0
53 * (it's also used in acerhk when directly accessing the BIOS)
54 */
55 #define ACER_AMW0_WRITE 0x9610
56
57 /*
58 * Bit masks for the AMW0 interface
59 */
60 #define ACER_AMW0_WIRELESS_MASK 0x35
61 #define ACER_AMW0_BLUETOOTH_MASK 0x34
62 #define ACER_AMW0_MAILLED_MASK 0x31
63
64 /*
65 * Method IDs for WMID interface
66 */
67 #define ACER_WMID_GET_WIRELESS_METHODID 1
68 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
69 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
70 #define ACER_WMID_SET_WIRELESS_METHODID 4
71 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
72 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
73 #define ACER_WMID_GET_THREEG_METHODID 10
74 #define ACER_WMID_SET_THREEG_METHODID 11
75
76 /*
77 * Acer ACPI method GUIDs
78 */
79 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
80 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
81 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
82 #define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A"
83 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
84
85 /*
86 * Acer ACPI event GUIDs
87 */
88 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
89
90 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
91 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
92 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
93
94 enum acer_wmi_event_ids {
95 WMID_HOTKEY_EVENT = 0x1,
96 WMID_ACCEL_EVENT = 0x5,
97 };
98
99 static const struct key_entry acer_wmi_keymap[] __initconst = {
100 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
101 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */
102 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */
103 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
104 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
105 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
106 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
107 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
108 {KE_KEY, 0x29, {KEY_PROG3} }, /* P_Key for TM8372 */
109 {KE_IGNORE, 0x41, {KEY_MUTE} },
110 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
111 {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
112 {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
113 {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
114 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
115 {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
116 {KE_IGNORE, 0x45, {KEY_STOP} },
117 {KE_IGNORE, 0x50, {KEY_STOP} },
118 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
119 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
120 {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
121 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
122 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
123 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
124 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
125 {KE_IGNORE, 0x81, {KEY_SLEEP} },
126 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
127 {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
128 {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
129 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
130 {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
131 {KE_END, 0}
132 };
133
134 static struct input_dev *acer_wmi_input_dev;
135 static struct input_dev *acer_wmi_accel_dev;
136
137 struct event_return_value {
138 u8 function;
139 u8 key_num;
140 u16 device_state;
141 u32 reserved;
142 } __attribute__((packed));
143
144 /*
145 * GUID3 Get Device Status device flags
146 */
147 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
148 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
149 #define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
150 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
151 #define ACER_WMID3_GDS_TOUCHPAD (1<<1) /* Touchpad */
152
153 struct lm_input_params {
154 u8 function_num; /* Function Number */
155 u16 commun_devices; /* Communication type devices default status */
156 u16 devices; /* Other type devices default status */
157 u8 lm_status; /* Launch Manager Status */
158 u16 reserved;
159 } __attribute__((packed));
160
161 struct lm_return_value {
162 u8 error_code; /* Error Code */
163 u8 ec_return_value; /* EC Return Value */
164 u16 reserved;
165 } __attribute__((packed));
166
167 struct wmid3_gds_set_input_param { /* Set Device Status input parameter */
168 u8 function_num; /* Function Number */
169 u8 hotkey_number; /* Hotkey Number */
170 u16 devices; /* Set Device */
171 u8 volume_value; /* Volume Value */
172 } __attribute__((packed));
173
174 struct wmid3_gds_get_input_param { /* Get Device Status input parameter */
175 u8 function_num; /* Function Number */
176 u8 hotkey_number; /* Hotkey Number */
177 u16 devices; /* Get Device */
178 } __attribute__((packed));
179
180 struct wmid3_gds_return_value { /* Get Device Status return value*/
181 u8 error_code; /* Error Code */
182 u8 ec_return_value; /* EC Return Value */
183 u16 devices; /* Current Device Status */
184 u32 reserved;
185 } __attribute__((packed));
186
187 struct hotkey_function_type_aa {
188 u8 type;
189 u8 length;
190 u16 handle;
191 u16 commun_func_bitmap;
192 u16 application_func_bitmap;
193 u16 media_func_bitmap;
194 u16 display_func_bitmap;
195 u16 others_func_bitmap;
196 u8 commun_fn_key_number;
197 } __attribute__((packed));
198
199 /*
200 * Interface capability flags
201 */
202 #define ACER_CAP_MAILLED (1<<0)
203 #define ACER_CAP_WIRELESS (1<<1)
204 #define ACER_CAP_BLUETOOTH (1<<2)
205 #define ACER_CAP_BRIGHTNESS (1<<3)
206 #define ACER_CAP_THREEG (1<<4)
207 #define ACER_CAP_ACCEL (1<<5)
208 #define ACER_CAP_ANY (0xFFFFFFFF)
209
210 /*
211 * Interface type flags
212 */
213 enum interface_flags {
214 ACER_AMW0,
215 ACER_AMW0_V2,
216 ACER_WMID,
217 ACER_WMID_v2,
218 };
219
220 #define ACER_DEFAULT_WIRELESS 0
221 #define ACER_DEFAULT_BLUETOOTH 0
222 #define ACER_DEFAULT_MAILLED 0
223 #define ACER_DEFAULT_THREEG 0
224
225 static int max_brightness = 0xF;
226
227 static int mailled = -1;
228 static int brightness = -1;
229 static int threeg = -1;
230 static int force_series;
231 static bool ec_raw_mode;
232 static bool has_type_aa;
233 static u16 commun_func_bitmap;
234 static u8 commun_fn_key_number;
235
236 module_param(mailled, int, 0444);
237 module_param(brightness, int, 0444);
238 module_param(threeg, int, 0444);
239 module_param(force_series, int, 0444);
240 module_param(ec_raw_mode, bool, 0444);
241 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
242 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
243 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
244 MODULE_PARM_DESC(force_series, "Force a different laptop series");
245 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
246
247 struct acer_data {
248 int mailled;
249 int threeg;
250 int brightness;
251 };
252
253 struct acer_debug {
254 struct dentry *root;
255 struct dentry *devices;
256 u32 wmid_devices;
257 };
258
259 static struct rfkill *wireless_rfkill;
260 static struct rfkill *bluetooth_rfkill;
261 static struct rfkill *threeg_rfkill;
262 static bool rfkill_inited;
263
264 /* Each low-level interface must define at least some of the following */
265 struct wmi_interface {
266 /* The WMI device type */
267 u32 type;
268
269 /* The capabilities this interface provides */
270 u32 capability;
271
272 /* Private data for the current interface */
273 struct acer_data data;
274
275 /* debugfs entries associated with this interface */
276 struct acer_debug debug;
277 };
278
279 /* The static interface pointer, points to the currently detected interface */
280 static struct wmi_interface *interface;
281
282 /*
283 * Embedded Controller quirks
284 * Some laptops require us to directly access the EC to either enable or query
285 * features that are not available through WMI.
286 */
287
288 struct quirk_entry {
289 u8 wireless;
290 u8 mailled;
291 s8 brightness;
292 u8 bluetooth;
293 };
294
295 static struct quirk_entry *quirks;
296
297 static void __init set_quirks(void)
298 {
299 if (!interface)
300 return;
301
302 if (quirks->mailled)
303 interface->capability |= ACER_CAP_MAILLED;
304
305 if (quirks->brightness)
306 interface->capability |= ACER_CAP_BRIGHTNESS;
307 }
308
309 static int __init dmi_matched(const struct dmi_system_id *dmi)
310 {
311 quirks = dmi->driver_data;
312 return 1;
313 }
314
315 static struct quirk_entry quirk_unknown = {
316 };
317
318 static struct quirk_entry quirk_acer_aspire_1520 = {
319 .brightness = -1,
320 };
321
322 static struct quirk_entry quirk_acer_travelmate_2490 = {
323 .mailled = 1,
324 };
325
326 /* This AMW0 laptop has no bluetooth */
327 static struct quirk_entry quirk_medion_md_98300 = {
328 .wireless = 1,
329 };
330
331 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
332 .wireless = 2,
333 };
334
335 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
336 .wireless = 3,
337 };
338
339 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
340 static const struct dmi_system_id acer_blacklist[] __initconst = {
341 {
342 .ident = "Acer Aspire One (SSD)",
343 .matches = {
344 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
345 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
346 },
347 },
348 {
349 .ident = "Acer Aspire One (HDD)",
350 .matches = {
351 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
352 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
353 },
354 },
355 {}
356 };
357
358 static const struct dmi_system_id acer_quirks[] __initconst = {
359 {
360 .callback = dmi_matched,
361 .ident = "Acer Aspire 1360",
362 .matches = {
363 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
364 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
365 },
366 .driver_data = &quirk_acer_aspire_1520,
367 },
368 {
369 .callback = dmi_matched,
370 .ident = "Acer Aspire 1520",
371 .matches = {
372 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
373 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
374 },
375 .driver_data = &quirk_acer_aspire_1520,
376 },
377 {
378 .callback = dmi_matched,
379 .ident = "Acer Aspire 3100",
380 .matches = {
381 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
382 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
383 },
384 .driver_data = &quirk_acer_travelmate_2490,
385 },
386 {
387 .callback = dmi_matched,
388 .ident = "Acer Aspire 3610",
389 .matches = {
390 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
391 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
392 },
393 .driver_data = &quirk_acer_travelmate_2490,
394 },
395 {
396 .callback = dmi_matched,
397 .ident = "Acer Aspire 5100",
398 .matches = {
399 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
400 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
401 },
402 .driver_data = &quirk_acer_travelmate_2490,
403 },
404 {
405 .callback = dmi_matched,
406 .ident = "Acer Aspire 5610",
407 .matches = {
408 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
409 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
410 },
411 .driver_data = &quirk_acer_travelmate_2490,
412 },
413 {
414 .callback = dmi_matched,
415 .ident = "Acer Aspire 5630",
416 .matches = {
417 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
418 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
419 },
420 .driver_data = &quirk_acer_travelmate_2490,
421 },
422 {
423 .callback = dmi_matched,
424 .ident = "Acer Aspire 5650",
425 .matches = {
426 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
427 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
428 },
429 .driver_data = &quirk_acer_travelmate_2490,
430 },
431 {
432 .callback = dmi_matched,
433 .ident = "Acer Aspire 5680",
434 .matches = {
435 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
436 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
437 },
438 .driver_data = &quirk_acer_travelmate_2490,
439 },
440 {
441 .callback = dmi_matched,
442 .ident = "Acer Aspire 9110",
443 .matches = {
444 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
445 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
446 },
447 .driver_data = &quirk_acer_travelmate_2490,
448 },
449 {
450 .callback = dmi_matched,
451 .ident = "Acer TravelMate 2490",
452 .matches = {
453 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
454 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
455 },
456 .driver_data = &quirk_acer_travelmate_2490,
457 },
458 {
459 .callback = dmi_matched,
460 .ident = "Acer TravelMate 4200",
461 .matches = {
462 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
463 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
464 },
465 .driver_data = &quirk_acer_travelmate_2490,
466 },
467 {
468 .callback = dmi_matched,
469 .ident = "Fujitsu Siemens Amilo Li 1718",
470 .matches = {
471 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
472 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
473 },
474 .driver_data = &quirk_fujitsu_amilo_li_1718,
475 },
476 {
477 .callback = dmi_matched,
478 .ident = "Medion MD 98300",
479 .matches = {
480 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
481 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
482 },
483 .driver_data = &quirk_medion_md_98300,
484 },
485 {
486 .callback = dmi_matched,
487 .ident = "Lenovo Ideapad S205",
488 .matches = {
489 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
490 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
491 },
492 .driver_data = &quirk_lenovo_ideapad_s205,
493 },
494 {
495 .callback = dmi_matched,
496 .ident = "Lenovo Ideapad S205 (Brazos)",
497 .matches = {
498 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
499 DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
500 },
501 .driver_data = &quirk_lenovo_ideapad_s205,
502 },
503 {
504 .callback = dmi_matched,
505 .ident = "Lenovo 3000 N200",
506 .matches = {
507 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
508 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
509 },
510 .driver_data = &quirk_fujitsu_amilo_li_1718,
511 },
512 {
513 .callback = dmi_matched,
514 .ident = "Lenovo Ideapad S205-10382JG",
515 .matches = {
516 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
517 DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
518 },
519 .driver_data = &quirk_lenovo_ideapad_s205,
520 },
521 {
522 .callback = dmi_matched,
523 .ident = "Lenovo Ideapad S205-1038DPG",
524 .matches = {
525 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
526 DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
527 },
528 .driver_data = &quirk_lenovo_ideapad_s205,
529 },
530 {}
531 };
532
533 static int __init
534 video_set_backlight_video_vendor(const struct dmi_system_id *d)
535 {
536 interface->capability &= ~ACER_CAP_BRIGHTNESS;
537 pr_info("Brightness must be controlled by generic video driver\n");
538 return 0;
539 }
540
541 static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
542 {
543 .callback = video_set_backlight_video_vendor,
544 .ident = "Acer TravelMate 4750",
545 .matches = {
546 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
547 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
548 },
549 },
550 {
551 .callback = video_set_backlight_video_vendor,
552 .ident = "Acer Extensa 5235",
553 .matches = {
554 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
555 DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
556 },
557 },
558 {
559 .callback = video_set_backlight_video_vendor,
560 .ident = "Acer TravelMate 5760",
561 .matches = {
562 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
563 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
564 },
565 },
566 {
567 .callback = video_set_backlight_video_vendor,
568 .ident = "Acer Aspire 5750",
569 .matches = {
570 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
571 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
572 },
573 },
574 {
575 .callback = video_set_backlight_video_vendor,
576 .ident = "Acer Aspire 5741",
577 .matches = {
578 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
579 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
580 },
581 },
582 {
583 /*
584 * Note no video_set_backlight_video_vendor, we must use the
585 * acer interface, as there is no native backlight interface.
586 */
587 .ident = "Acer KAV80",
588 .matches = {
589 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
590 DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
591 },
592 },
593 {}
594 };
595
596 /* Find which quirks are needed for a particular vendor/ model pair */
597 static void __init find_quirks(void)
598 {
599 if (!force_series) {
600 dmi_check_system(acer_quirks);
601 } else if (force_series == 2490) {
602 quirks = &quirk_acer_travelmate_2490;
603 }
604
605 if (quirks == NULL)
606 quirks = &quirk_unknown;
607
608 set_quirks();
609 }
610
611 /*
612 * General interface convenience methods
613 */
614
615 static bool has_cap(u32 cap)
616 {
617 if ((interface->capability & cap) != 0)
618 return 1;
619
620 return 0;
621 }
622
623 /*
624 * AMW0 (V1) interface
625 */
626 struct wmab_args {
627 u32 eax;
628 u32 ebx;
629 u32 ecx;
630 u32 edx;
631 };
632
633 struct wmab_ret {
634 u32 eax;
635 u32 ebx;
636 u32 ecx;
637 u32 edx;
638 u32 eex;
639 };
640
641 static acpi_status wmab_execute(struct wmab_args *regbuf,
642 struct acpi_buffer *result)
643 {
644 struct acpi_buffer input;
645 acpi_status status;
646 input.length = sizeof(struct wmab_args);
647 input.pointer = (u8 *)regbuf;
648
649 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
650
651 return status;
652 }
653
654 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
655 {
656 int err;
657 u8 result;
658
659 switch (cap) {
660 case ACER_CAP_MAILLED:
661 switch (quirks->mailled) {
662 default:
663 err = ec_read(0xA, &result);
664 if (err)
665 return AE_ERROR;
666 *value = (result >> 7) & 0x1;
667 return AE_OK;
668 }
669 break;
670 case ACER_CAP_WIRELESS:
671 switch (quirks->wireless) {
672 case 1:
673 err = ec_read(0x7B, &result);
674 if (err)
675 return AE_ERROR;
676 *value = result & 0x1;
677 return AE_OK;
678 case 2:
679 err = ec_read(0x71, &result);
680 if (err)
681 return AE_ERROR;
682 *value = result & 0x1;
683 return AE_OK;
684 case 3:
685 err = ec_read(0x78, &result);
686 if (err)
687 return AE_ERROR;
688 *value = result & 0x1;
689 return AE_OK;
690 default:
691 err = ec_read(0xA, &result);
692 if (err)
693 return AE_ERROR;
694 *value = (result >> 2) & 0x1;
695 return AE_OK;
696 }
697 break;
698 case ACER_CAP_BLUETOOTH:
699 switch (quirks->bluetooth) {
700 default:
701 err = ec_read(0xA, &result);
702 if (err)
703 return AE_ERROR;
704 *value = (result >> 4) & 0x1;
705 return AE_OK;
706 }
707 break;
708 case ACER_CAP_BRIGHTNESS:
709 switch (quirks->brightness) {
710 default:
711 err = ec_read(0x83, &result);
712 if (err)
713 return AE_ERROR;
714 *value = result;
715 return AE_OK;
716 }
717 break;
718 default:
719 return AE_ERROR;
720 }
721 return AE_OK;
722 }
723
724 static acpi_status AMW0_set_u32(u32 value, u32 cap)
725 {
726 struct wmab_args args;
727
728 args.eax = ACER_AMW0_WRITE;
729 args.ebx = value ? (1<<8) : 0;
730 args.ecx = args.edx = 0;
731
732 switch (cap) {
733 case ACER_CAP_MAILLED:
734 if (value > 1)
735 return AE_BAD_PARAMETER;
736 args.ebx |= ACER_AMW0_MAILLED_MASK;
737 break;
738 case ACER_CAP_WIRELESS:
739 if (value > 1)
740 return AE_BAD_PARAMETER;
741 args.ebx |= ACER_AMW0_WIRELESS_MASK;
742 break;
743 case ACER_CAP_BLUETOOTH:
744 if (value > 1)
745 return AE_BAD_PARAMETER;
746 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
747 break;
748 case ACER_CAP_BRIGHTNESS:
749 if (value > max_brightness)
750 return AE_BAD_PARAMETER;
751 switch (quirks->brightness) {
752 default:
753 return ec_write(0x83, value);
754 break;
755 }
756 default:
757 return AE_ERROR;
758 }
759
760 /* Actually do the set */
761 return wmab_execute(&args, NULL);
762 }
763
764 static acpi_status __init AMW0_find_mailled(void)
765 {
766 struct wmab_args args;
767 struct wmab_ret ret;
768 acpi_status status = AE_OK;
769 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
770 union acpi_object *obj;
771
772 args.eax = 0x86;
773 args.ebx = args.ecx = args.edx = 0;
774
775 status = wmab_execute(&args, &out);
776 if (ACPI_FAILURE(status))
777 return status;
778
779 obj = (union acpi_object *) out.pointer;
780 if (obj && obj->type == ACPI_TYPE_BUFFER &&
781 obj->buffer.length == sizeof(struct wmab_ret)) {
782 ret = *((struct wmab_ret *) obj->buffer.pointer);
783 } else {
784 kfree(out.pointer);
785 return AE_ERROR;
786 }
787
788 if (ret.eex & 0x1)
789 interface->capability |= ACER_CAP_MAILLED;
790
791 kfree(out.pointer);
792
793 return AE_OK;
794 }
795
796 static const struct acpi_device_id norfkill_ids[] __initconst = {
797 { "VPC2004", 0},
798 { "IBM0068", 0},
799 { "LEN0068", 0},
800 { "SNY5001", 0}, /* sony-laptop in charge */
801 { "HPQ6601", 0},
802 { "", 0},
803 };
804
805 static int __init AMW0_set_cap_acpi_check_device(void)
806 {
807 const struct acpi_device_id *id;
808
809 for (id = norfkill_ids; id->id[0]; id++)
810 if (acpi_dev_found(id->id))
811 return true;
812
813 return false;
814 }
815
816 static acpi_status __init AMW0_set_capabilities(void)
817 {
818 struct wmab_args args;
819 struct wmab_ret ret;
820 acpi_status status;
821 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
822 union acpi_object *obj;
823
824 /*
825 * On laptops with this strange GUID (non Acer), normal probing doesn't
826 * work.
827 */
828 if (wmi_has_guid(AMW0_GUID2)) {
829 if ((quirks != &quirk_unknown) ||
830 !AMW0_set_cap_acpi_check_device())
831 interface->capability |= ACER_CAP_WIRELESS;
832 return AE_OK;
833 }
834
835 args.eax = ACER_AMW0_WRITE;
836 args.ecx = args.edx = 0;
837
838 args.ebx = 0xa2 << 8;
839 args.ebx |= ACER_AMW0_WIRELESS_MASK;
840
841 status = wmab_execute(&args, &out);
842 if (ACPI_FAILURE(status))
843 return status;
844
845 obj = out.pointer;
846 if (obj && obj->type == ACPI_TYPE_BUFFER &&
847 obj->buffer.length == sizeof(struct wmab_ret)) {
848 ret = *((struct wmab_ret *) obj->buffer.pointer);
849 } else {
850 status = AE_ERROR;
851 goto out;
852 }
853
854 if (ret.eax & 0x1)
855 interface->capability |= ACER_CAP_WIRELESS;
856
857 args.ebx = 2 << 8;
858 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
859
860 /*
861 * It's ok to use existing buffer for next wmab_execute call.
862 * But we need to kfree(out.pointer) if next wmab_execute fail.
863 */
864 status = wmab_execute(&args, &out);
865 if (ACPI_FAILURE(status))
866 goto out;
867
868 obj = (union acpi_object *) out.pointer;
869 if (obj && obj->type == ACPI_TYPE_BUFFER
870 && obj->buffer.length == sizeof(struct wmab_ret)) {
871 ret = *((struct wmab_ret *) obj->buffer.pointer);
872 } else {
873 status = AE_ERROR;
874 goto out;
875 }
876
877 if (ret.eax & 0x1)
878 interface->capability |= ACER_CAP_BLUETOOTH;
879
880 /*
881 * This appears to be safe to enable, since all Wistron based laptops
882 * appear to use the same EC register for brightness, even if they
883 * differ for wireless, etc
884 */
885 if (quirks->brightness >= 0)
886 interface->capability |= ACER_CAP_BRIGHTNESS;
887
888 status = AE_OK;
889 out:
890 kfree(out.pointer);
891 return status;
892 }
893
894 static struct wmi_interface AMW0_interface = {
895 .type = ACER_AMW0,
896 };
897
898 static struct wmi_interface AMW0_V2_interface = {
899 .type = ACER_AMW0_V2,
900 };
901
902 /*
903 * New interface (The WMID interface)
904 */
905 static acpi_status
906 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
907 {
908 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
909 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
910 union acpi_object *obj;
911 u32 tmp = 0;
912 acpi_status status;
913
914 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
915
916 if (ACPI_FAILURE(status))
917 return status;
918
919 obj = (union acpi_object *) result.pointer;
920 if (obj) {
921 if (obj->type == ACPI_TYPE_BUFFER &&
922 (obj->buffer.length == sizeof(u32) ||
923 obj->buffer.length == sizeof(u64))) {
924 tmp = *((u32 *) obj->buffer.pointer);
925 } else if (obj->type == ACPI_TYPE_INTEGER) {
926 tmp = (u32) obj->integer.value;
927 }
928 }
929
930 if (out)
931 *out = tmp;
932
933 kfree(result.pointer);
934
935 return status;
936 }
937
938 static acpi_status WMID_get_u32(u32 *value, u32 cap)
939 {
940 acpi_status status;
941 u8 tmp;
942 u32 result, method_id = 0;
943
944 switch (cap) {
945 case ACER_CAP_WIRELESS:
946 method_id = ACER_WMID_GET_WIRELESS_METHODID;
947 break;
948 case ACER_CAP_BLUETOOTH:
949 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
950 break;
951 case ACER_CAP_BRIGHTNESS:
952 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
953 break;
954 case ACER_CAP_THREEG:
955 method_id = ACER_WMID_GET_THREEG_METHODID;
956 break;
957 case ACER_CAP_MAILLED:
958 if (quirks->mailled == 1) {
959 ec_read(0x9f, &tmp);
960 *value = tmp & 0x1;
961 return 0;
962 }
963 default:
964 return AE_ERROR;
965 }
966 status = WMI_execute_u32(method_id, 0, &result);
967
968 if (ACPI_SUCCESS(status))
969 *value = (u8)result;
970
971 return status;
972 }
973
974 static acpi_status WMID_set_u32(u32 value, u32 cap)
975 {
976 u32 method_id = 0;
977 char param;
978
979 switch (cap) {
980 case ACER_CAP_BRIGHTNESS:
981 if (value > max_brightness)
982 return AE_BAD_PARAMETER;
983 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
984 break;
985 case ACER_CAP_WIRELESS:
986 if (value > 1)
987 return AE_BAD_PARAMETER;
988 method_id = ACER_WMID_SET_WIRELESS_METHODID;
989 break;
990 case ACER_CAP_BLUETOOTH:
991 if (value > 1)
992 return AE_BAD_PARAMETER;
993 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
994 break;
995 case ACER_CAP_THREEG:
996 if (value > 1)
997 return AE_BAD_PARAMETER;
998 method_id = ACER_WMID_SET_THREEG_METHODID;
999 break;
1000 case ACER_CAP_MAILLED:
1001 if (value > 1)
1002 return AE_BAD_PARAMETER;
1003 if (quirks->mailled == 1) {
1004 param = value ? 0x92 : 0x93;
1005 i8042_lock_chip();
1006 i8042_command(&param, 0x1059);
1007 i8042_unlock_chip();
1008 return 0;
1009 }
1010 break;
1011 default:
1012 return AE_ERROR;
1013 }
1014 return WMI_execute_u32(method_id, (u32)value, NULL);
1015 }
1016
1017 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1018 {
1019 struct wmid3_gds_return_value return_value;
1020 acpi_status status;
1021 union acpi_object *obj;
1022 struct wmid3_gds_get_input_param params = {
1023 .function_num = 0x1,
1024 .hotkey_number = commun_fn_key_number,
1025 .devices = device,
1026 };
1027 struct acpi_buffer input = {
1028 sizeof(struct wmid3_gds_get_input_param),
1029 &params
1030 };
1031 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1032
1033 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1034 if (ACPI_FAILURE(status))
1035 return status;
1036
1037 obj = output.pointer;
1038
1039 if (!obj)
1040 return AE_ERROR;
1041 else if (obj->type != ACPI_TYPE_BUFFER) {
1042 kfree(obj);
1043 return AE_ERROR;
1044 }
1045 if (obj->buffer.length != 8) {
1046 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1047 kfree(obj);
1048 return AE_ERROR;
1049 }
1050
1051 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1052 kfree(obj);
1053
1054 if (return_value.error_code || return_value.ec_return_value)
1055 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1056 device,
1057 return_value.error_code,
1058 return_value.ec_return_value);
1059 else
1060 *value = !!(return_value.devices & device);
1061
1062 return status;
1063 }
1064
1065 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1066 {
1067 u16 device;
1068
1069 switch (cap) {
1070 case ACER_CAP_WIRELESS:
1071 device = ACER_WMID3_GDS_WIRELESS;
1072 break;
1073 case ACER_CAP_BLUETOOTH:
1074 device = ACER_WMID3_GDS_BLUETOOTH;
1075 break;
1076 case ACER_CAP_THREEG:
1077 device = ACER_WMID3_GDS_THREEG;
1078 break;
1079 default:
1080 return AE_ERROR;
1081 }
1082 return wmid3_get_device_status(value, device);
1083 }
1084
1085 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1086 {
1087 struct wmid3_gds_return_value return_value;
1088 acpi_status status;
1089 union acpi_object *obj;
1090 u16 devices;
1091 struct wmid3_gds_get_input_param get_params = {
1092 .function_num = 0x1,
1093 .hotkey_number = commun_fn_key_number,
1094 .devices = commun_func_bitmap,
1095 };
1096 struct acpi_buffer get_input = {
1097 sizeof(struct wmid3_gds_get_input_param),
1098 &get_params
1099 };
1100 struct wmid3_gds_set_input_param set_params = {
1101 .function_num = 0x2,
1102 .hotkey_number = commun_fn_key_number,
1103 .devices = commun_func_bitmap,
1104 };
1105 struct acpi_buffer set_input = {
1106 sizeof(struct wmid3_gds_set_input_param),
1107 &set_params
1108 };
1109 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1110 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1111
1112 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1113 if (ACPI_FAILURE(status))
1114 return status;
1115
1116 obj = output.pointer;
1117
1118 if (!obj)
1119 return AE_ERROR;
1120 else if (obj->type != ACPI_TYPE_BUFFER) {
1121 kfree(obj);
1122 return AE_ERROR;
1123 }
1124 if (obj->buffer.length != 8) {
1125 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1126 kfree(obj);
1127 return AE_ERROR;
1128 }
1129
1130 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1131 kfree(obj);
1132
1133 if (return_value.error_code || return_value.ec_return_value) {
1134 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1135 return_value.error_code,
1136 return_value.ec_return_value);
1137 return status;
1138 }
1139
1140 devices = return_value.devices;
1141 set_params.devices = (value) ? (devices | device) : (devices & ~device);
1142
1143 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1144 if (ACPI_FAILURE(status))
1145 return status;
1146
1147 obj = output2.pointer;
1148
1149 if (!obj)
1150 return AE_ERROR;
1151 else if (obj->type != ACPI_TYPE_BUFFER) {
1152 kfree(obj);
1153 return AE_ERROR;
1154 }
1155 if (obj->buffer.length != 4) {
1156 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1157 kfree(obj);
1158 return AE_ERROR;
1159 }
1160
1161 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1162 kfree(obj);
1163
1164 if (return_value.error_code || return_value.ec_return_value)
1165 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1166 return_value.error_code,
1167 return_value.ec_return_value);
1168
1169 return status;
1170 }
1171
1172 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1173 {
1174 u16 device;
1175
1176 switch (cap) {
1177 case ACER_CAP_WIRELESS:
1178 device = ACER_WMID3_GDS_WIRELESS;
1179 break;
1180 case ACER_CAP_BLUETOOTH:
1181 device = ACER_WMID3_GDS_BLUETOOTH;
1182 break;
1183 case ACER_CAP_THREEG:
1184 device = ACER_WMID3_GDS_THREEG;
1185 break;
1186 default:
1187 return AE_ERROR;
1188 }
1189 return wmid3_set_device_status(value, device);
1190 }
1191
1192 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1193 {
1194 struct hotkey_function_type_aa *type_aa;
1195
1196 /* We are looking for OEM-specific Type AAh */
1197 if (header->type != 0xAA)
1198 return;
1199
1200 has_type_aa = true;
1201 type_aa = (struct hotkey_function_type_aa *) header;
1202
1203 pr_info("Function bitmap for Communication Button: 0x%x\n",
1204 type_aa->commun_func_bitmap);
1205 commun_func_bitmap = type_aa->commun_func_bitmap;
1206
1207 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1208 interface->capability |= ACER_CAP_WIRELESS;
1209 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1210 interface->capability |= ACER_CAP_THREEG;
1211 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1212 interface->capability |= ACER_CAP_BLUETOOTH;
1213
1214 commun_fn_key_number = type_aa->commun_fn_key_number;
1215 }
1216
1217 static acpi_status __init WMID_set_capabilities(void)
1218 {
1219 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1220 union acpi_object *obj;
1221 acpi_status status;
1222 u32 devices;
1223
1224 status = wmi_query_block(WMID_GUID2, 1, &out);
1225 if (ACPI_FAILURE(status))
1226 return status;
1227
1228 obj = (union acpi_object *) out.pointer;
1229 if (obj) {
1230 if (obj->type == ACPI_TYPE_BUFFER &&
1231 (obj->buffer.length == sizeof(u32) ||
1232 obj->buffer.length == sizeof(u64))) {
1233 devices = *((u32 *) obj->buffer.pointer);
1234 } else if (obj->type == ACPI_TYPE_INTEGER) {
1235 devices = (u32) obj->integer.value;
1236 } else {
1237 kfree(out.pointer);
1238 return AE_ERROR;
1239 }
1240 } else {
1241 kfree(out.pointer);
1242 return AE_ERROR;
1243 }
1244
1245 pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1246 if (devices & 0x07)
1247 interface->capability |= ACER_CAP_WIRELESS;
1248 if (devices & 0x40)
1249 interface->capability |= ACER_CAP_THREEG;
1250 if (devices & 0x10)
1251 interface->capability |= ACER_CAP_BLUETOOTH;
1252
1253 if (!(devices & 0x20))
1254 max_brightness = 0x9;
1255
1256 kfree(out.pointer);
1257 return status;
1258 }
1259
1260 static struct wmi_interface wmid_interface = {
1261 .type = ACER_WMID,
1262 };
1263
1264 static struct wmi_interface wmid_v2_interface = {
1265 .type = ACER_WMID_v2,
1266 };
1267
1268 /*
1269 * Generic Device (interface-independent)
1270 */
1271
1272 static acpi_status get_u32(u32 *value, u32 cap)
1273 {
1274 acpi_status status = AE_ERROR;
1275
1276 switch (interface->type) {
1277 case ACER_AMW0:
1278 status = AMW0_get_u32(value, cap);
1279 break;
1280 case ACER_AMW0_V2:
1281 if (cap == ACER_CAP_MAILLED) {
1282 status = AMW0_get_u32(value, cap);
1283 break;
1284 }
1285 case ACER_WMID:
1286 status = WMID_get_u32(value, cap);
1287 break;
1288 case ACER_WMID_v2:
1289 if (cap & (ACER_CAP_WIRELESS |
1290 ACER_CAP_BLUETOOTH |
1291 ACER_CAP_THREEG))
1292 status = wmid_v2_get_u32(value, cap);
1293 else if (wmi_has_guid(WMID_GUID2))
1294 status = WMID_get_u32(value, cap);
1295 break;
1296 }
1297
1298 return status;
1299 }
1300
1301 static acpi_status set_u32(u32 value, u32 cap)
1302 {
1303 acpi_status status;
1304
1305 if (interface->capability & cap) {
1306 switch (interface->type) {
1307 case ACER_AMW0:
1308 return AMW0_set_u32(value, cap);
1309 case ACER_AMW0_V2:
1310 if (cap == ACER_CAP_MAILLED)
1311 return AMW0_set_u32(value, cap);
1312
1313 /*
1314 * On some models, some WMID methods don't toggle
1315 * properly. For those cases, we want to run the AMW0
1316 * method afterwards to be certain we've really toggled
1317 * the device state.
1318 */
1319 if (cap == ACER_CAP_WIRELESS ||
1320 cap == ACER_CAP_BLUETOOTH) {
1321 status = WMID_set_u32(value, cap);
1322 if (ACPI_FAILURE(status))
1323 return status;
1324
1325 return AMW0_set_u32(value, cap);
1326 }
1327 case ACER_WMID:
1328 return WMID_set_u32(value, cap);
1329 case ACER_WMID_v2:
1330 if (cap & (ACER_CAP_WIRELESS |
1331 ACER_CAP_BLUETOOTH |
1332 ACER_CAP_THREEG))
1333 return wmid_v2_set_u32(value, cap);
1334 else if (wmi_has_guid(WMID_GUID2))
1335 return WMID_set_u32(value, cap);
1336 default:
1337 return AE_BAD_PARAMETER;
1338 }
1339 }
1340 return AE_BAD_PARAMETER;
1341 }
1342
1343 static void __init acer_commandline_init(void)
1344 {
1345 /*
1346 * These will all fail silently if the value given is invalid, or the
1347 * capability isn't available on the given interface
1348 */
1349 if (mailled >= 0)
1350 set_u32(mailled, ACER_CAP_MAILLED);
1351 if (!has_type_aa && threeg >= 0)
1352 set_u32(threeg, ACER_CAP_THREEG);
1353 if (brightness >= 0)
1354 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1355 }
1356
1357 /*
1358 * LED device (Mail LED only, no other LEDs known yet)
1359 */
1360 static void mail_led_set(struct led_classdev *led_cdev,
1361 enum led_brightness value)
1362 {
1363 set_u32(value, ACER_CAP_MAILLED);
1364 }
1365
1366 static struct led_classdev mail_led = {
1367 .name = "acer-wmi::mail",
1368 .brightness_set = mail_led_set,
1369 };
1370
1371 static int acer_led_init(struct device *dev)
1372 {
1373 return led_classdev_register(dev, &mail_led);
1374 }
1375
1376 static void acer_led_exit(void)
1377 {
1378 set_u32(LED_OFF, ACER_CAP_MAILLED);
1379 led_classdev_unregister(&mail_led);
1380 }
1381
1382 /*
1383 * Backlight device
1384 */
1385 static struct backlight_device *acer_backlight_device;
1386
1387 static int read_brightness(struct backlight_device *bd)
1388 {
1389 u32 value;
1390 get_u32(&value, ACER_CAP_BRIGHTNESS);
1391 return value;
1392 }
1393
1394 static int update_bl_status(struct backlight_device *bd)
1395 {
1396 int intensity = bd->props.brightness;
1397
1398 if (bd->props.power != FB_BLANK_UNBLANK)
1399 intensity = 0;
1400 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1401 intensity = 0;
1402
1403 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1404
1405 return 0;
1406 }
1407
1408 static const struct backlight_ops acer_bl_ops = {
1409 .get_brightness = read_brightness,
1410 .update_status = update_bl_status,
1411 };
1412
1413 static int acer_backlight_init(struct device *dev)
1414 {
1415 struct backlight_properties props;
1416 struct backlight_device *bd;
1417
1418 memset(&props, 0, sizeof(struct backlight_properties));
1419 props.type = BACKLIGHT_PLATFORM;
1420 props.max_brightness = max_brightness;
1421 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1422 &props);
1423 if (IS_ERR(bd)) {
1424 pr_err("Could not register Acer backlight device\n");
1425 acer_backlight_device = NULL;
1426 return PTR_ERR(bd);
1427 }
1428
1429 acer_backlight_device = bd;
1430
1431 bd->props.power = FB_BLANK_UNBLANK;
1432 bd->props.brightness = read_brightness(bd);
1433 backlight_update_status(bd);
1434 return 0;
1435 }
1436
1437 static void acer_backlight_exit(void)
1438 {
1439 backlight_device_unregister(acer_backlight_device);
1440 }
1441
1442 /*
1443 * Accelerometer device
1444 */
1445 static acpi_handle gsensor_handle;
1446
1447 static int acer_gsensor_init(void)
1448 {
1449 acpi_status status;
1450 struct acpi_buffer output;
1451 union acpi_object out_obj;
1452
1453 output.length = sizeof(out_obj);
1454 output.pointer = &out_obj;
1455 status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1456 if (ACPI_FAILURE(status))
1457 return -1;
1458
1459 return 0;
1460 }
1461
1462 static int acer_gsensor_open(struct input_dev *input)
1463 {
1464 return acer_gsensor_init();
1465 }
1466
1467 static int acer_gsensor_event(void)
1468 {
1469 acpi_status status;
1470 struct acpi_buffer output;
1471 union acpi_object out_obj[5];
1472
1473 if (!has_cap(ACER_CAP_ACCEL))
1474 return -1;
1475
1476 output.length = sizeof(out_obj);
1477 output.pointer = out_obj;
1478
1479 status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1480 if (ACPI_FAILURE(status))
1481 return -1;
1482
1483 if (out_obj->package.count != 4)
1484 return -1;
1485
1486 input_report_abs(acer_wmi_accel_dev, ABS_X,
1487 (s16)out_obj->package.elements[0].integer.value);
1488 input_report_abs(acer_wmi_accel_dev, ABS_Y,
1489 (s16)out_obj->package.elements[1].integer.value);
1490 input_report_abs(acer_wmi_accel_dev, ABS_Z,
1491 (s16)out_obj->package.elements[2].integer.value);
1492 input_sync(acer_wmi_accel_dev);
1493 return 0;
1494 }
1495
1496 /*
1497 * Rfkill devices
1498 */
1499 static void acer_rfkill_update(struct work_struct *ignored);
1500 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1501 static void acer_rfkill_update(struct work_struct *ignored)
1502 {
1503 u32 state;
1504 acpi_status status;
1505
1506 if (has_cap(ACER_CAP_WIRELESS)) {
1507 status = get_u32(&state, ACER_CAP_WIRELESS);
1508 if (ACPI_SUCCESS(status)) {
1509 if (quirks->wireless == 3)
1510 rfkill_set_hw_state(wireless_rfkill, !state);
1511 else
1512 rfkill_set_sw_state(wireless_rfkill, !state);
1513 }
1514 }
1515
1516 if (has_cap(ACER_CAP_BLUETOOTH)) {
1517 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1518 if (ACPI_SUCCESS(status))
1519 rfkill_set_sw_state(bluetooth_rfkill, !state);
1520 }
1521
1522 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1523 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1524 if (ACPI_SUCCESS(status))
1525 rfkill_set_sw_state(threeg_rfkill, !state);
1526 }
1527
1528 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1529 }
1530
1531 static int acer_rfkill_set(void *data, bool blocked)
1532 {
1533 acpi_status status;
1534 u32 cap = (unsigned long)data;
1535
1536 if (rfkill_inited) {
1537 status = set_u32(!blocked, cap);
1538 if (ACPI_FAILURE(status))
1539 return -ENODEV;
1540 }
1541
1542 return 0;
1543 }
1544
1545 static const struct rfkill_ops acer_rfkill_ops = {
1546 .set_block = acer_rfkill_set,
1547 };
1548
1549 static struct rfkill *acer_rfkill_register(struct device *dev,
1550 enum rfkill_type type,
1551 char *name, u32 cap)
1552 {
1553 int err;
1554 struct rfkill *rfkill_dev;
1555 u32 state;
1556 acpi_status status;
1557
1558 rfkill_dev = rfkill_alloc(name, dev, type,
1559 &acer_rfkill_ops,
1560 (void *)(unsigned long)cap);
1561 if (!rfkill_dev)
1562 return ERR_PTR(-ENOMEM);
1563
1564 status = get_u32(&state, cap);
1565
1566 err = rfkill_register(rfkill_dev);
1567 if (err) {
1568 rfkill_destroy(rfkill_dev);
1569 return ERR_PTR(err);
1570 }
1571
1572 if (ACPI_SUCCESS(status))
1573 rfkill_set_sw_state(rfkill_dev, !state);
1574
1575 return rfkill_dev;
1576 }
1577
1578 static int acer_rfkill_init(struct device *dev)
1579 {
1580 int err;
1581
1582 if (has_cap(ACER_CAP_WIRELESS)) {
1583 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1584 "acer-wireless", ACER_CAP_WIRELESS);
1585 if (IS_ERR(wireless_rfkill)) {
1586 err = PTR_ERR(wireless_rfkill);
1587 goto error_wireless;
1588 }
1589 }
1590
1591 if (has_cap(ACER_CAP_BLUETOOTH)) {
1592 bluetooth_rfkill = acer_rfkill_register(dev,
1593 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1594 ACER_CAP_BLUETOOTH);
1595 if (IS_ERR(bluetooth_rfkill)) {
1596 err = PTR_ERR(bluetooth_rfkill);
1597 goto error_bluetooth;
1598 }
1599 }
1600
1601 if (has_cap(ACER_CAP_THREEG)) {
1602 threeg_rfkill = acer_rfkill_register(dev,
1603 RFKILL_TYPE_WWAN, "acer-threeg",
1604 ACER_CAP_THREEG);
1605 if (IS_ERR(threeg_rfkill)) {
1606 err = PTR_ERR(threeg_rfkill);
1607 goto error_threeg;
1608 }
1609 }
1610
1611 rfkill_inited = true;
1612
1613 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1614 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1615 schedule_delayed_work(&acer_rfkill_work,
1616 round_jiffies_relative(HZ));
1617
1618 return 0;
1619
1620 error_threeg:
1621 if (has_cap(ACER_CAP_BLUETOOTH)) {
1622 rfkill_unregister(bluetooth_rfkill);
1623 rfkill_destroy(bluetooth_rfkill);
1624 }
1625 error_bluetooth:
1626 if (has_cap(ACER_CAP_WIRELESS)) {
1627 rfkill_unregister(wireless_rfkill);
1628 rfkill_destroy(wireless_rfkill);
1629 }
1630 error_wireless:
1631 return err;
1632 }
1633
1634 static void acer_rfkill_exit(void)
1635 {
1636 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1637 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1638 cancel_delayed_work_sync(&acer_rfkill_work);
1639
1640 if (has_cap(ACER_CAP_WIRELESS)) {
1641 rfkill_unregister(wireless_rfkill);
1642 rfkill_destroy(wireless_rfkill);
1643 }
1644
1645 if (has_cap(ACER_CAP_BLUETOOTH)) {
1646 rfkill_unregister(bluetooth_rfkill);
1647 rfkill_destroy(bluetooth_rfkill);
1648 }
1649
1650 if (has_cap(ACER_CAP_THREEG)) {
1651 rfkill_unregister(threeg_rfkill);
1652 rfkill_destroy(threeg_rfkill);
1653 }
1654 return;
1655 }
1656
1657 static void acer_wmi_notify(u32 value, void *context)
1658 {
1659 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1660 union acpi_object *obj;
1661 struct event_return_value return_value;
1662 acpi_status status;
1663 u16 device_state;
1664 const struct key_entry *key;
1665 u32 scancode;
1666
1667 status = wmi_get_event_data(value, &response);
1668 if (status != AE_OK) {
1669 pr_warn("bad event status 0x%x\n", status);
1670 return;
1671 }
1672
1673 obj = (union acpi_object *)response.pointer;
1674
1675 if (!obj)
1676 return;
1677 if (obj->type != ACPI_TYPE_BUFFER) {
1678 pr_warn("Unknown response received %d\n", obj->type);
1679 kfree(obj);
1680 return;
1681 }
1682 if (obj->buffer.length != 8) {
1683 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1684 kfree(obj);
1685 return;
1686 }
1687
1688 return_value = *((struct event_return_value *)obj->buffer.pointer);
1689 kfree(obj);
1690
1691 switch (return_value.function) {
1692 case WMID_HOTKEY_EVENT:
1693 device_state = return_value.device_state;
1694 pr_debug("device state: 0x%x\n", device_state);
1695
1696 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1697 return_value.key_num);
1698 if (!key) {
1699 pr_warn("Unknown key number - 0x%x\n",
1700 return_value.key_num);
1701 } else {
1702 scancode = return_value.key_num;
1703 switch (key->keycode) {
1704 case KEY_WLAN:
1705 case KEY_BLUETOOTH:
1706 if (has_cap(ACER_CAP_WIRELESS))
1707 rfkill_set_sw_state(wireless_rfkill,
1708 !(device_state & ACER_WMID3_GDS_WIRELESS));
1709 if (has_cap(ACER_CAP_THREEG))
1710 rfkill_set_sw_state(threeg_rfkill,
1711 !(device_state & ACER_WMID3_GDS_THREEG));
1712 if (has_cap(ACER_CAP_BLUETOOTH))
1713 rfkill_set_sw_state(bluetooth_rfkill,
1714 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1715 break;
1716 case KEY_TOUCHPAD_TOGGLE:
1717 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1718 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1719 }
1720 sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1721 }
1722 break;
1723 case WMID_ACCEL_EVENT:
1724 acer_gsensor_event();
1725 break;
1726 default:
1727 pr_warn("Unknown function number - %d - %d\n",
1728 return_value.function, return_value.key_num);
1729 break;
1730 }
1731 }
1732
1733 static acpi_status __init
1734 wmid3_set_lm_mode(struct lm_input_params *params,
1735 struct lm_return_value *return_value)
1736 {
1737 acpi_status status;
1738 union acpi_object *obj;
1739
1740 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1741 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1742
1743 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1744 if (ACPI_FAILURE(status))
1745 return status;
1746
1747 obj = output.pointer;
1748
1749 if (!obj)
1750 return AE_ERROR;
1751 else if (obj->type != ACPI_TYPE_BUFFER) {
1752 kfree(obj);
1753 return AE_ERROR;
1754 }
1755 if (obj->buffer.length != 4) {
1756 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1757 kfree(obj);
1758 return AE_ERROR;
1759 }
1760
1761 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1762 kfree(obj);
1763
1764 return status;
1765 }
1766
1767 static int __init acer_wmi_enable_ec_raw(void)
1768 {
1769 struct lm_return_value return_value;
1770 acpi_status status;
1771 struct lm_input_params params = {
1772 .function_num = 0x1,
1773 .commun_devices = 0xFFFF,
1774 .devices = 0xFFFF,
1775 .lm_status = 0x00, /* Launch Manager Deactive */
1776 };
1777
1778 status = wmid3_set_lm_mode(&params, &return_value);
1779
1780 if (return_value.error_code || return_value.ec_return_value)
1781 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1782 return_value.error_code,
1783 return_value.ec_return_value);
1784 else
1785 pr_info("Enabled EC raw mode\n");
1786
1787 return status;
1788 }
1789
1790 static int __init acer_wmi_enable_lm(void)
1791 {
1792 struct lm_return_value return_value;
1793 acpi_status status;
1794 struct lm_input_params params = {
1795 .function_num = 0x1,
1796 .commun_devices = 0xFFFF,
1797 .devices = 0xFFFF,
1798 .lm_status = 0x01, /* Launch Manager Active */
1799 };
1800
1801 status = wmid3_set_lm_mode(&params, &return_value);
1802
1803 if (return_value.error_code || return_value.ec_return_value)
1804 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1805 return_value.error_code,
1806 return_value.ec_return_value);
1807
1808 return status;
1809 }
1810
1811 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1812 void *ctx, void **retval)
1813 {
1814 *(acpi_handle *)retval = ah;
1815 return AE_OK;
1816 }
1817
1818 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1819 acpi_handle *ah)
1820 {
1821 acpi_status status;
1822 acpi_handle handle;
1823
1824 BUG_ON(!name || !ah);
1825
1826 handle = NULL;
1827 status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1828 (void *)name, &handle);
1829
1830 if (ACPI_SUCCESS(status)) {
1831 *ah = handle;
1832 return 0;
1833 } else {
1834 return -ENODEV;
1835 }
1836 }
1837
1838 static int __init acer_wmi_accel_setup(void)
1839 {
1840 int err;
1841
1842 err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1843 if (err)
1844 return err;
1845
1846 interface->capability |= ACER_CAP_ACCEL;
1847
1848 acer_wmi_accel_dev = input_allocate_device();
1849 if (!acer_wmi_accel_dev)
1850 return -ENOMEM;
1851
1852 acer_wmi_accel_dev->open = acer_gsensor_open;
1853
1854 acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1855 acer_wmi_accel_dev->phys = "wmi/input1";
1856 acer_wmi_accel_dev->id.bustype = BUS_HOST;
1857 acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1858 input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1859 input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1860 input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1861
1862 err = input_register_device(acer_wmi_accel_dev);
1863 if (err)
1864 goto err_free_dev;
1865
1866 return 0;
1867
1868 err_free_dev:
1869 input_free_device(acer_wmi_accel_dev);
1870 return err;
1871 }
1872
1873 static void acer_wmi_accel_destroy(void)
1874 {
1875 input_unregister_device(acer_wmi_accel_dev);
1876 }
1877
1878 static int __init acer_wmi_input_setup(void)
1879 {
1880 acpi_status status;
1881 int err;
1882
1883 acer_wmi_input_dev = input_allocate_device();
1884 if (!acer_wmi_input_dev)
1885 return -ENOMEM;
1886
1887 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1888 acer_wmi_input_dev->phys = "wmi/input0";
1889 acer_wmi_input_dev->id.bustype = BUS_HOST;
1890
1891 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1892 if (err)
1893 goto err_free_dev;
1894
1895 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1896 acer_wmi_notify, NULL);
1897 if (ACPI_FAILURE(status)) {
1898 err = -EIO;
1899 goto err_free_keymap;
1900 }
1901
1902 err = input_register_device(acer_wmi_input_dev);
1903 if (err)
1904 goto err_uninstall_notifier;
1905
1906 return 0;
1907
1908 err_uninstall_notifier:
1909 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1910 err_free_keymap:
1911 sparse_keymap_free(acer_wmi_input_dev);
1912 err_free_dev:
1913 input_free_device(acer_wmi_input_dev);
1914 return err;
1915 }
1916
1917 static void acer_wmi_input_destroy(void)
1918 {
1919 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1920 sparse_keymap_free(acer_wmi_input_dev);
1921 input_unregister_device(acer_wmi_input_dev);
1922 }
1923
1924 /*
1925 * debugfs functions
1926 */
1927 static u32 get_wmid_devices(void)
1928 {
1929 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1930 union acpi_object *obj;
1931 acpi_status status;
1932 u32 devices = 0;
1933
1934 status = wmi_query_block(WMID_GUID2, 1, &out);
1935 if (ACPI_FAILURE(status))
1936 return 0;
1937
1938 obj = (union acpi_object *) out.pointer;
1939 if (obj) {
1940 if (obj->type == ACPI_TYPE_BUFFER &&
1941 (obj->buffer.length == sizeof(u32) ||
1942 obj->buffer.length == sizeof(u64))) {
1943 devices = *((u32 *) obj->buffer.pointer);
1944 } else if (obj->type == ACPI_TYPE_INTEGER) {
1945 devices = (u32) obj->integer.value;
1946 }
1947 }
1948
1949 kfree(out.pointer);
1950 return devices;
1951 }
1952
1953 /*
1954 * Platform device
1955 */
1956 static int acer_platform_probe(struct platform_device *device)
1957 {
1958 int err;
1959
1960 if (has_cap(ACER_CAP_MAILLED)) {
1961 err = acer_led_init(&device->dev);
1962 if (err)
1963 goto error_mailled;
1964 }
1965
1966 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1967 err = acer_backlight_init(&device->dev);
1968 if (err)
1969 goto error_brightness;
1970 }
1971
1972 err = acer_rfkill_init(&device->dev);
1973 if (err)
1974 goto error_rfkill;
1975
1976 return err;
1977
1978 error_rfkill:
1979 if (has_cap(ACER_CAP_BRIGHTNESS))
1980 acer_backlight_exit();
1981 error_brightness:
1982 if (has_cap(ACER_CAP_MAILLED))
1983 acer_led_exit();
1984 error_mailled:
1985 return err;
1986 }
1987
1988 static int acer_platform_remove(struct platform_device *device)
1989 {
1990 if (has_cap(ACER_CAP_MAILLED))
1991 acer_led_exit();
1992 if (has_cap(ACER_CAP_BRIGHTNESS))
1993 acer_backlight_exit();
1994
1995 acer_rfkill_exit();
1996 return 0;
1997 }
1998
1999 #ifdef CONFIG_PM_SLEEP
2000 static int acer_suspend(struct device *dev)
2001 {
2002 u32 value;
2003 struct acer_data *data = &interface->data;
2004
2005 if (!data)
2006 return -ENOMEM;
2007
2008 if (has_cap(ACER_CAP_MAILLED)) {
2009 get_u32(&value, ACER_CAP_MAILLED);
2010 set_u32(LED_OFF, ACER_CAP_MAILLED);
2011 data->mailled = value;
2012 }
2013
2014 if (has_cap(ACER_CAP_BRIGHTNESS)) {
2015 get_u32(&value, ACER_CAP_BRIGHTNESS);
2016 data->brightness = value;
2017 }
2018
2019 return 0;
2020 }
2021
2022 static int acer_resume(struct device *dev)
2023 {
2024 struct acer_data *data = &interface->data;
2025
2026 if (!data)
2027 return -ENOMEM;
2028
2029 if (has_cap(ACER_CAP_MAILLED))
2030 set_u32(data->mailled, ACER_CAP_MAILLED);
2031
2032 if (has_cap(ACER_CAP_BRIGHTNESS))
2033 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2034
2035 if (has_cap(ACER_CAP_ACCEL))
2036 acer_gsensor_init();
2037
2038 return 0;
2039 }
2040 #else
2041 #define acer_suspend NULL
2042 #define acer_resume NULL
2043 #endif
2044
2045 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2046
2047 static void acer_platform_shutdown(struct platform_device *device)
2048 {
2049 struct acer_data *data = &interface->data;
2050
2051 if (!data)
2052 return;
2053
2054 if (has_cap(ACER_CAP_MAILLED))
2055 set_u32(LED_OFF, ACER_CAP_MAILLED);
2056 }
2057
2058 static struct platform_driver acer_platform_driver = {
2059 .driver = {
2060 .name = "acer-wmi",
2061 .pm = &acer_pm,
2062 },
2063 .probe = acer_platform_probe,
2064 .remove = acer_platform_remove,
2065 .shutdown = acer_platform_shutdown,
2066 };
2067
2068 static struct platform_device *acer_platform_device;
2069
2070 static void remove_debugfs(void)
2071 {
2072 debugfs_remove(interface->debug.devices);
2073 debugfs_remove(interface->debug.root);
2074 }
2075
2076 static int __init create_debugfs(void)
2077 {
2078 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2079 if (!interface->debug.root) {
2080 pr_err("Failed to create debugfs directory");
2081 return -ENOMEM;
2082 }
2083
2084 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2085 interface->debug.root,
2086 &interface->debug.wmid_devices);
2087 if (!interface->debug.devices)
2088 goto error_debugfs;
2089
2090 return 0;
2091
2092 error_debugfs:
2093 remove_debugfs();
2094 return -ENOMEM;
2095 }
2096
2097 static int __init acer_wmi_init(void)
2098 {
2099 int err;
2100
2101 pr_info("Acer Laptop ACPI-WMI Extras\n");
2102
2103 if (dmi_check_system(acer_blacklist)) {
2104 pr_info("Blacklisted hardware detected - not loading\n");
2105 return -ENODEV;
2106 }
2107
2108 find_quirks();
2109
2110 /*
2111 * Detect which ACPI-WMI interface we're using.
2112 */
2113 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2114 interface = &AMW0_V2_interface;
2115
2116 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2117 interface = &wmid_interface;
2118
2119 if (wmi_has_guid(WMID_GUID3))
2120 interface = &wmid_v2_interface;
2121
2122 if (interface)
2123 dmi_walk(type_aa_dmi_decode, NULL);
2124
2125 if (wmi_has_guid(WMID_GUID2) && interface) {
2126 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2127 pr_err("Unable to detect available WMID devices\n");
2128 return -ENODEV;
2129 }
2130 /* WMID always provides brightness methods */
2131 interface->capability |= ACER_CAP_BRIGHTNESS;
2132 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2133 pr_err("No WMID device detection method found\n");
2134 return -ENODEV;
2135 }
2136
2137 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2138 interface = &AMW0_interface;
2139
2140 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2141 pr_err("Unable to detect available AMW0 devices\n");
2142 return -ENODEV;
2143 }
2144 }
2145
2146 if (wmi_has_guid(AMW0_GUID1))
2147 AMW0_find_mailled();
2148
2149 if (!interface) {
2150 pr_err("No or unsupported WMI interface, unable to load\n");
2151 return -ENODEV;
2152 }
2153
2154 set_quirks();
2155
2156 if (dmi_check_system(video_vendor_dmi_table))
2157 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2158
2159 if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2160 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2161
2162 if (wmi_has_guid(WMID_GUID3)) {
2163 if (ec_raw_mode) {
2164 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2165 pr_err("Cannot enable EC raw mode\n");
2166 return -ENODEV;
2167 }
2168 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2169 pr_err("Cannot enable Launch Manager mode\n");
2170 return -ENODEV;
2171 }
2172 } else if (ec_raw_mode) {
2173 pr_info("No WMID EC raw mode enable method\n");
2174 }
2175
2176 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2177 err = acer_wmi_input_setup();
2178 if (err)
2179 return err;
2180 }
2181
2182 acer_wmi_accel_setup();
2183
2184 err = platform_driver_register(&acer_platform_driver);
2185 if (err) {
2186 pr_err("Unable to register platform driver\n");
2187 goto error_platform_register;
2188 }
2189
2190 acer_platform_device = platform_device_alloc("acer-wmi", -1);
2191 if (!acer_platform_device) {
2192 err = -ENOMEM;
2193 goto error_device_alloc;
2194 }
2195
2196 err = platform_device_add(acer_platform_device);
2197 if (err)
2198 goto error_device_add;
2199
2200 if (wmi_has_guid(WMID_GUID2)) {
2201 interface->debug.wmid_devices = get_wmid_devices();
2202 err = create_debugfs();
2203 if (err)
2204 goto error_create_debugfs;
2205 }
2206
2207 /* Override any initial settings with values from the commandline */
2208 acer_commandline_init();
2209
2210 return 0;
2211
2212 error_create_debugfs:
2213 platform_device_del(acer_platform_device);
2214 error_device_add:
2215 platform_device_put(acer_platform_device);
2216 error_device_alloc:
2217 platform_driver_unregister(&acer_platform_driver);
2218 error_platform_register:
2219 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2220 acer_wmi_input_destroy();
2221 if (has_cap(ACER_CAP_ACCEL))
2222 acer_wmi_accel_destroy();
2223
2224 return err;
2225 }
2226
2227 static void __exit acer_wmi_exit(void)
2228 {
2229 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2230 acer_wmi_input_destroy();
2231
2232 if (has_cap(ACER_CAP_ACCEL))
2233 acer_wmi_accel_destroy();
2234
2235 remove_debugfs();
2236 platform_device_unregister(acer_platform_device);
2237 platform_driver_unregister(&acer_platform_driver);
2238
2239 pr_info("Acer Laptop WMI Extras unloaded\n");
2240 return;
2241 }
2242
2243 module_init(acer_wmi_init);
2244 module_exit(acer_wmi_exit);
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