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[mirror_ubuntu-artful-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[] = {
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 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 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 struct dmi_system_id acer_blacklist[] = {
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 struct dmi_system_id acer_quirks[] = {
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 video_set_backlight_video_vendor(const struct dmi_system_id *d)
534 {
535 interface->capability &= ~ACER_CAP_BRIGHTNESS;
536 pr_info("Brightness must be controlled by generic video driver\n");
537 return 0;
538 }
539
540 static const struct dmi_system_id video_vendor_dmi_table[] = {
541 {
542 .callback = video_set_backlight_video_vendor,
543 .ident = "Acer TravelMate 4750",
544 .matches = {
545 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
546 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
547 },
548 },
549 {
550 .callback = video_set_backlight_video_vendor,
551 .ident = "Acer Extensa 5235",
552 .matches = {
553 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
554 DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
555 },
556 },
557 {
558 .callback = video_set_backlight_video_vendor,
559 .ident = "Acer TravelMate 5760",
560 .matches = {
561 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
562 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
563 },
564 },
565 {
566 .callback = video_set_backlight_video_vendor,
567 .ident = "Acer Aspire 5750",
568 .matches = {
569 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
570 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
571 },
572 },
573 {
574 .callback = video_set_backlight_video_vendor,
575 .ident = "Acer Aspire 5741",
576 .matches = {
577 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
578 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
579 },
580 },
581 {}
582 };
583
584 /* Find which quirks are needed for a particular vendor/ model pair */
585 static void find_quirks(void)
586 {
587 if (!force_series) {
588 dmi_check_system(acer_quirks);
589 } else if (force_series == 2490) {
590 quirks = &quirk_acer_travelmate_2490;
591 }
592
593 if (quirks == NULL)
594 quirks = &quirk_unknown;
595
596 set_quirks();
597 }
598
599 /*
600 * General interface convenience methods
601 */
602
603 static bool has_cap(u32 cap)
604 {
605 if ((interface->capability & cap) != 0)
606 return 1;
607
608 return 0;
609 }
610
611 /*
612 * AMW0 (V1) interface
613 */
614 struct wmab_args {
615 u32 eax;
616 u32 ebx;
617 u32 ecx;
618 u32 edx;
619 };
620
621 struct wmab_ret {
622 u32 eax;
623 u32 ebx;
624 u32 ecx;
625 u32 edx;
626 u32 eex;
627 };
628
629 static acpi_status wmab_execute(struct wmab_args *regbuf,
630 struct acpi_buffer *result)
631 {
632 struct acpi_buffer input;
633 acpi_status status;
634 input.length = sizeof(struct wmab_args);
635 input.pointer = (u8 *)regbuf;
636
637 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
638
639 return status;
640 }
641
642 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
643 {
644 int err;
645 u8 result;
646
647 switch (cap) {
648 case ACER_CAP_MAILLED:
649 switch (quirks->mailled) {
650 default:
651 err = ec_read(0xA, &result);
652 if (err)
653 return AE_ERROR;
654 *value = (result >> 7) & 0x1;
655 return AE_OK;
656 }
657 break;
658 case ACER_CAP_WIRELESS:
659 switch (quirks->wireless) {
660 case 1:
661 err = ec_read(0x7B, &result);
662 if (err)
663 return AE_ERROR;
664 *value = result & 0x1;
665 return AE_OK;
666 case 2:
667 err = ec_read(0x71, &result);
668 if (err)
669 return AE_ERROR;
670 *value = result & 0x1;
671 return AE_OK;
672 case 3:
673 err = ec_read(0x78, &result);
674 if (err)
675 return AE_ERROR;
676 *value = result & 0x1;
677 return AE_OK;
678 default:
679 err = ec_read(0xA, &result);
680 if (err)
681 return AE_ERROR;
682 *value = (result >> 2) & 0x1;
683 return AE_OK;
684 }
685 break;
686 case ACER_CAP_BLUETOOTH:
687 switch (quirks->bluetooth) {
688 default:
689 err = ec_read(0xA, &result);
690 if (err)
691 return AE_ERROR;
692 *value = (result >> 4) & 0x1;
693 return AE_OK;
694 }
695 break;
696 case ACER_CAP_BRIGHTNESS:
697 switch (quirks->brightness) {
698 default:
699 err = ec_read(0x83, &result);
700 if (err)
701 return AE_ERROR;
702 *value = result;
703 return AE_OK;
704 }
705 break;
706 default:
707 return AE_ERROR;
708 }
709 return AE_OK;
710 }
711
712 static acpi_status AMW0_set_u32(u32 value, u32 cap)
713 {
714 struct wmab_args args;
715
716 args.eax = ACER_AMW0_WRITE;
717 args.ebx = value ? (1<<8) : 0;
718 args.ecx = args.edx = 0;
719
720 switch (cap) {
721 case ACER_CAP_MAILLED:
722 if (value > 1)
723 return AE_BAD_PARAMETER;
724 args.ebx |= ACER_AMW0_MAILLED_MASK;
725 break;
726 case ACER_CAP_WIRELESS:
727 if (value > 1)
728 return AE_BAD_PARAMETER;
729 args.ebx |= ACER_AMW0_WIRELESS_MASK;
730 break;
731 case ACER_CAP_BLUETOOTH:
732 if (value > 1)
733 return AE_BAD_PARAMETER;
734 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
735 break;
736 case ACER_CAP_BRIGHTNESS:
737 if (value > max_brightness)
738 return AE_BAD_PARAMETER;
739 switch (quirks->brightness) {
740 default:
741 return ec_write(0x83, value);
742 break;
743 }
744 default:
745 return AE_ERROR;
746 }
747
748 /* Actually do the set */
749 return wmab_execute(&args, NULL);
750 }
751
752 static acpi_status AMW0_find_mailled(void)
753 {
754 struct wmab_args args;
755 struct wmab_ret ret;
756 acpi_status status = AE_OK;
757 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
758 union acpi_object *obj;
759
760 args.eax = 0x86;
761 args.ebx = args.ecx = args.edx = 0;
762
763 status = wmab_execute(&args, &out);
764 if (ACPI_FAILURE(status))
765 return status;
766
767 obj = (union acpi_object *) out.pointer;
768 if (obj && obj->type == ACPI_TYPE_BUFFER &&
769 obj->buffer.length == sizeof(struct wmab_ret)) {
770 ret = *((struct wmab_ret *) obj->buffer.pointer);
771 } else {
772 kfree(out.pointer);
773 return AE_ERROR;
774 }
775
776 if (ret.eex & 0x1)
777 interface->capability |= ACER_CAP_MAILLED;
778
779 kfree(out.pointer);
780
781 return AE_OK;
782 }
783
784 static int AMW0_set_cap_acpi_check_device_found;
785
786 static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
787 u32 level, void *context, void **retval)
788 {
789 AMW0_set_cap_acpi_check_device_found = 1;
790 return AE_OK;
791 }
792
793 static const struct acpi_device_id norfkill_ids[] = {
794 { "VPC2004", 0},
795 { "IBM0068", 0},
796 { "LEN0068", 0},
797 { "SNY5001", 0}, /* sony-laptop in charge */
798 { "", 0},
799 };
800
801 static int AMW0_set_cap_acpi_check_device(void)
802 {
803 const struct acpi_device_id *id;
804
805 for (id = norfkill_ids; id->id[0]; id++)
806 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
807 NULL, NULL);
808 return AMW0_set_cap_acpi_check_device_found;
809 }
810
811 static acpi_status AMW0_set_capabilities(void)
812 {
813 struct wmab_args args;
814 struct wmab_ret ret;
815 acpi_status status;
816 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
817 union acpi_object *obj;
818
819 /*
820 * On laptops with this strange GUID (non Acer), normal probing doesn't
821 * work.
822 */
823 if (wmi_has_guid(AMW0_GUID2)) {
824 if ((quirks != &quirk_unknown) ||
825 !AMW0_set_cap_acpi_check_device())
826 interface->capability |= ACER_CAP_WIRELESS;
827 return AE_OK;
828 }
829
830 args.eax = ACER_AMW0_WRITE;
831 args.ecx = args.edx = 0;
832
833 args.ebx = 0xa2 << 8;
834 args.ebx |= ACER_AMW0_WIRELESS_MASK;
835
836 status = wmab_execute(&args, &out);
837 if (ACPI_FAILURE(status))
838 return status;
839
840 obj = out.pointer;
841 if (obj && obj->type == ACPI_TYPE_BUFFER &&
842 obj->buffer.length == sizeof(struct wmab_ret)) {
843 ret = *((struct wmab_ret *) obj->buffer.pointer);
844 } else {
845 status = AE_ERROR;
846 goto out;
847 }
848
849 if (ret.eax & 0x1)
850 interface->capability |= ACER_CAP_WIRELESS;
851
852 args.ebx = 2 << 8;
853 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
854
855 /*
856 * It's ok to use existing buffer for next wmab_execute call.
857 * But we need to kfree(out.pointer) if next wmab_execute fail.
858 */
859 status = wmab_execute(&args, &out);
860 if (ACPI_FAILURE(status))
861 goto out;
862
863 obj = (union acpi_object *) out.pointer;
864 if (obj && obj->type == ACPI_TYPE_BUFFER
865 && obj->buffer.length == sizeof(struct wmab_ret)) {
866 ret = *((struct wmab_ret *) obj->buffer.pointer);
867 } else {
868 status = AE_ERROR;
869 goto out;
870 }
871
872 if (ret.eax & 0x1)
873 interface->capability |= ACER_CAP_BLUETOOTH;
874
875 /*
876 * This appears to be safe to enable, since all Wistron based laptops
877 * appear to use the same EC register for brightness, even if they
878 * differ for wireless, etc
879 */
880 if (quirks->brightness >= 0)
881 interface->capability |= ACER_CAP_BRIGHTNESS;
882
883 status = AE_OK;
884 out:
885 kfree(out.pointer);
886 return status;
887 }
888
889 static struct wmi_interface AMW0_interface = {
890 .type = ACER_AMW0,
891 };
892
893 static struct wmi_interface AMW0_V2_interface = {
894 .type = ACER_AMW0_V2,
895 };
896
897 /*
898 * New interface (The WMID interface)
899 */
900 static acpi_status
901 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
902 {
903 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
904 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
905 union acpi_object *obj;
906 u32 tmp = 0;
907 acpi_status status;
908
909 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
910
911 if (ACPI_FAILURE(status))
912 return status;
913
914 obj = (union acpi_object *) result.pointer;
915 if (obj) {
916 if (obj->type == ACPI_TYPE_BUFFER &&
917 (obj->buffer.length == sizeof(u32) ||
918 obj->buffer.length == sizeof(u64))) {
919 tmp = *((u32 *) obj->buffer.pointer);
920 } else if (obj->type == ACPI_TYPE_INTEGER) {
921 tmp = (u32) obj->integer.value;
922 }
923 }
924
925 if (out)
926 *out = tmp;
927
928 kfree(result.pointer);
929
930 return status;
931 }
932
933 static acpi_status WMID_get_u32(u32 *value, u32 cap)
934 {
935 acpi_status status;
936 u8 tmp;
937 u32 result, method_id = 0;
938
939 switch (cap) {
940 case ACER_CAP_WIRELESS:
941 method_id = ACER_WMID_GET_WIRELESS_METHODID;
942 break;
943 case ACER_CAP_BLUETOOTH:
944 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
945 break;
946 case ACER_CAP_BRIGHTNESS:
947 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
948 break;
949 case ACER_CAP_THREEG:
950 method_id = ACER_WMID_GET_THREEG_METHODID;
951 break;
952 case ACER_CAP_MAILLED:
953 if (quirks->mailled == 1) {
954 ec_read(0x9f, &tmp);
955 *value = tmp & 0x1;
956 return 0;
957 }
958 default:
959 return AE_ERROR;
960 }
961 status = WMI_execute_u32(method_id, 0, &result);
962
963 if (ACPI_SUCCESS(status))
964 *value = (u8)result;
965
966 return status;
967 }
968
969 static acpi_status WMID_set_u32(u32 value, u32 cap)
970 {
971 u32 method_id = 0;
972 char param;
973
974 switch (cap) {
975 case ACER_CAP_BRIGHTNESS:
976 if (value > max_brightness)
977 return AE_BAD_PARAMETER;
978 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
979 break;
980 case ACER_CAP_WIRELESS:
981 if (value > 1)
982 return AE_BAD_PARAMETER;
983 method_id = ACER_WMID_SET_WIRELESS_METHODID;
984 break;
985 case ACER_CAP_BLUETOOTH:
986 if (value > 1)
987 return AE_BAD_PARAMETER;
988 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
989 break;
990 case ACER_CAP_THREEG:
991 if (value > 1)
992 return AE_BAD_PARAMETER;
993 method_id = ACER_WMID_SET_THREEG_METHODID;
994 break;
995 case ACER_CAP_MAILLED:
996 if (value > 1)
997 return AE_BAD_PARAMETER;
998 if (quirks->mailled == 1) {
999 param = value ? 0x92 : 0x93;
1000 i8042_lock_chip();
1001 i8042_command(&param, 0x1059);
1002 i8042_unlock_chip();
1003 return 0;
1004 }
1005 break;
1006 default:
1007 return AE_ERROR;
1008 }
1009 return WMI_execute_u32(method_id, (u32)value, NULL);
1010 }
1011
1012 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1013 {
1014 struct wmid3_gds_return_value return_value;
1015 acpi_status status;
1016 union acpi_object *obj;
1017 struct wmid3_gds_get_input_param params = {
1018 .function_num = 0x1,
1019 .hotkey_number = commun_fn_key_number,
1020 .devices = device,
1021 };
1022 struct acpi_buffer input = {
1023 sizeof(struct wmid3_gds_get_input_param),
1024 &params
1025 };
1026 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1027
1028 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1029 if (ACPI_FAILURE(status))
1030 return status;
1031
1032 obj = output.pointer;
1033
1034 if (!obj)
1035 return AE_ERROR;
1036 else if (obj->type != ACPI_TYPE_BUFFER) {
1037 kfree(obj);
1038 return AE_ERROR;
1039 }
1040 if (obj->buffer.length != 8) {
1041 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1042 kfree(obj);
1043 return AE_ERROR;
1044 }
1045
1046 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1047 kfree(obj);
1048
1049 if (return_value.error_code || return_value.ec_return_value)
1050 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1051 device,
1052 return_value.error_code,
1053 return_value.ec_return_value);
1054 else
1055 *value = !!(return_value.devices & device);
1056
1057 return status;
1058 }
1059
1060 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1061 {
1062 u16 device;
1063
1064 switch (cap) {
1065 case ACER_CAP_WIRELESS:
1066 device = ACER_WMID3_GDS_WIRELESS;
1067 break;
1068 case ACER_CAP_BLUETOOTH:
1069 device = ACER_WMID3_GDS_BLUETOOTH;
1070 break;
1071 case ACER_CAP_THREEG:
1072 device = ACER_WMID3_GDS_THREEG;
1073 break;
1074 default:
1075 return AE_ERROR;
1076 }
1077 return wmid3_get_device_status(value, device);
1078 }
1079
1080 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1081 {
1082 struct wmid3_gds_return_value return_value;
1083 acpi_status status;
1084 union acpi_object *obj;
1085 u16 devices;
1086 struct wmid3_gds_get_input_param get_params = {
1087 .function_num = 0x1,
1088 .hotkey_number = commun_fn_key_number,
1089 .devices = commun_func_bitmap,
1090 };
1091 struct acpi_buffer get_input = {
1092 sizeof(struct wmid3_gds_get_input_param),
1093 &get_params
1094 };
1095 struct wmid3_gds_set_input_param set_params = {
1096 .function_num = 0x2,
1097 .hotkey_number = commun_fn_key_number,
1098 .devices = commun_func_bitmap,
1099 };
1100 struct acpi_buffer set_input = {
1101 sizeof(struct wmid3_gds_set_input_param),
1102 &set_params
1103 };
1104 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1105 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1106
1107 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1108 if (ACPI_FAILURE(status))
1109 return status;
1110
1111 obj = output.pointer;
1112
1113 if (!obj)
1114 return AE_ERROR;
1115 else if (obj->type != ACPI_TYPE_BUFFER) {
1116 kfree(obj);
1117 return AE_ERROR;
1118 }
1119 if (obj->buffer.length != 8) {
1120 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1121 kfree(obj);
1122 return AE_ERROR;
1123 }
1124
1125 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1126 kfree(obj);
1127
1128 if (return_value.error_code || return_value.ec_return_value) {
1129 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1130 return_value.error_code,
1131 return_value.ec_return_value);
1132 return status;
1133 }
1134
1135 devices = return_value.devices;
1136 set_params.devices = (value) ? (devices | device) : (devices & ~device);
1137
1138 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1139 if (ACPI_FAILURE(status))
1140 return status;
1141
1142 obj = output2.pointer;
1143
1144 if (!obj)
1145 return AE_ERROR;
1146 else if (obj->type != ACPI_TYPE_BUFFER) {
1147 kfree(obj);
1148 return AE_ERROR;
1149 }
1150 if (obj->buffer.length != 4) {
1151 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1152 kfree(obj);
1153 return AE_ERROR;
1154 }
1155
1156 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1157 kfree(obj);
1158
1159 if (return_value.error_code || return_value.ec_return_value)
1160 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1161 return_value.error_code,
1162 return_value.ec_return_value);
1163
1164 return status;
1165 }
1166
1167 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1168 {
1169 u16 device;
1170
1171 switch (cap) {
1172 case ACER_CAP_WIRELESS:
1173 device = ACER_WMID3_GDS_WIRELESS;
1174 break;
1175 case ACER_CAP_BLUETOOTH:
1176 device = ACER_WMID3_GDS_BLUETOOTH;
1177 break;
1178 case ACER_CAP_THREEG:
1179 device = ACER_WMID3_GDS_THREEG;
1180 break;
1181 default:
1182 return AE_ERROR;
1183 }
1184 return wmid3_set_device_status(value, device);
1185 }
1186
1187 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1188 {
1189 struct hotkey_function_type_aa *type_aa;
1190
1191 /* We are looking for OEM-specific Type AAh */
1192 if (header->type != 0xAA)
1193 return;
1194
1195 has_type_aa = true;
1196 type_aa = (struct hotkey_function_type_aa *) header;
1197
1198 pr_info("Function bitmap for Communication Button: 0x%x\n",
1199 type_aa->commun_func_bitmap);
1200 commun_func_bitmap = type_aa->commun_func_bitmap;
1201
1202 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1203 interface->capability |= ACER_CAP_WIRELESS;
1204 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1205 interface->capability |= ACER_CAP_THREEG;
1206 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1207 interface->capability |= ACER_CAP_BLUETOOTH;
1208
1209 commun_fn_key_number = type_aa->commun_fn_key_number;
1210 }
1211
1212 static acpi_status WMID_set_capabilities(void)
1213 {
1214 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1215 union acpi_object *obj;
1216 acpi_status status;
1217 u32 devices;
1218
1219 status = wmi_query_block(WMID_GUID2, 1, &out);
1220 if (ACPI_FAILURE(status))
1221 return status;
1222
1223 obj = (union acpi_object *) out.pointer;
1224 if (obj) {
1225 if (obj->type == ACPI_TYPE_BUFFER &&
1226 (obj->buffer.length == sizeof(u32) ||
1227 obj->buffer.length == sizeof(u64))) {
1228 devices = *((u32 *) obj->buffer.pointer);
1229 } else if (obj->type == ACPI_TYPE_INTEGER) {
1230 devices = (u32) obj->integer.value;
1231 } else {
1232 kfree(out.pointer);
1233 return AE_ERROR;
1234 }
1235 } else {
1236 kfree(out.pointer);
1237 return AE_ERROR;
1238 }
1239
1240 pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1241 if (devices & 0x07)
1242 interface->capability |= ACER_CAP_WIRELESS;
1243 if (devices & 0x40)
1244 interface->capability |= ACER_CAP_THREEG;
1245 if (devices & 0x10)
1246 interface->capability |= ACER_CAP_BLUETOOTH;
1247
1248 if (!(devices & 0x20))
1249 max_brightness = 0x9;
1250
1251 kfree(out.pointer);
1252 return status;
1253 }
1254
1255 static struct wmi_interface wmid_interface = {
1256 .type = ACER_WMID,
1257 };
1258
1259 static struct wmi_interface wmid_v2_interface = {
1260 .type = ACER_WMID_v2,
1261 };
1262
1263 /*
1264 * Generic Device (interface-independent)
1265 */
1266
1267 static acpi_status get_u32(u32 *value, u32 cap)
1268 {
1269 acpi_status status = AE_ERROR;
1270
1271 switch (interface->type) {
1272 case ACER_AMW0:
1273 status = AMW0_get_u32(value, cap);
1274 break;
1275 case ACER_AMW0_V2:
1276 if (cap == ACER_CAP_MAILLED) {
1277 status = AMW0_get_u32(value, cap);
1278 break;
1279 }
1280 case ACER_WMID:
1281 status = WMID_get_u32(value, cap);
1282 break;
1283 case ACER_WMID_v2:
1284 if (cap & (ACER_CAP_WIRELESS |
1285 ACER_CAP_BLUETOOTH |
1286 ACER_CAP_THREEG))
1287 status = wmid_v2_get_u32(value, cap);
1288 else if (wmi_has_guid(WMID_GUID2))
1289 status = WMID_get_u32(value, cap);
1290 break;
1291 }
1292
1293 return status;
1294 }
1295
1296 static acpi_status set_u32(u32 value, u32 cap)
1297 {
1298 acpi_status status;
1299
1300 if (interface->capability & cap) {
1301 switch (interface->type) {
1302 case ACER_AMW0:
1303 return AMW0_set_u32(value, cap);
1304 case ACER_AMW0_V2:
1305 if (cap == ACER_CAP_MAILLED)
1306 return AMW0_set_u32(value, cap);
1307
1308 /*
1309 * On some models, some WMID methods don't toggle
1310 * properly. For those cases, we want to run the AMW0
1311 * method afterwards to be certain we've really toggled
1312 * the device state.
1313 */
1314 if (cap == ACER_CAP_WIRELESS ||
1315 cap == ACER_CAP_BLUETOOTH) {
1316 status = WMID_set_u32(value, cap);
1317 if (ACPI_FAILURE(status))
1318 return status;
1319
1320 return AMW0_set_u32(value, cap);
1321 }
1322 case ACER_WMID:
1323 return WMID_set_u32(value, cap);
1324 case ACER_WMID_v2:
1325 if (cap & (ACER_CAP_WIRELESS |
1326 ACER_CAP_BLUETOOTH |
1327 ACER_CAP_THREEG))
1328 return wmid_v2_set_u32(value, cap);
1329 else if (wmi_has_guid(WMID_GUID2))
1330 return WMID_set_u32(value, cap);
1331 default:
1332 return AE_BAD_PARAMETER;
1333 }
1334 }
1335 return AE_BAD_PARAMETER;
1336 }
1337
1338 static void __init acer_commandline_init(void)
1339 {
1340 /*
1341 * These will all fail silently if the value given is invalid, or the
1342 * capability isn't available on the given interface
1343 */
1344 if (mailled >= 0)
1345 set_u32(mailled, ACER_CAP_MAILLED);
1346 if (!has_type_aa && threeg >= 0)
1347 set_u32(threeg, ACER_CAP_THREEG);
1348 if (brightness >= 0)
1349 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1350 }
1351
1352 /*
1353 * LED device (Mail LED only, no other LEDs known yet)
1354 */
1355 static void mail_led_set(struct led_classdev *led_cdev,
1356 enum led_brightness value)
1357 {
1358 set_u32(value, ACER_CAP_MAILLED);
1359 }
1360
1361 static struct led_classdev mail_led = {
1362 .name = "acer-wmi::mail",
1363 .brightness_set = mail_led_set,
1364 };
1365
1366 static int acer_led_init(struct device *dev)
1367 {
1368 return led_classdev_register(dev, &mail_led);
1369 }
1370
1371 static void acer_led_exit(void)
1372 {
1373 set_u32(LED_OFF, ACER_CAP_MAILLED);
1374 led_classdev_unregister(&mail_led);
1375 }
1376
1377 /*
1378 * Backlight device
1379 */
1380 static struct backlight_device *acer_backlight_device;
1381
1382 static int read_brightness(struct backlight_device *bd)
1383 {
1384 u32 value;
1385 get_u32(&value, ACER_CAP_BRIGHTNESS);
1386 return value;
1387 }
1388
1389 static int update_bl_status(struct backlight_device *bd)
1390 {
1391 int intensity = bd->props.brightness;
1392
1393 if (bd->props.power != FB_BLANK_UNBLANK)
1394 intensity = 0;
1395 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1396 intensity = 0;
1397
1398 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1399
1400 return 0;
1401 }
1402
1403 static const struct backlight_ops acer_bl_ops = {
1404 .get_brightness = read_brightness,
1405 .update_status = update_bl_status,
1406 };
1407
1408 static int acer_backlight_init(struct device *dev)
1409 {
1410 struct backlight_properties props;
1411 struct backlight_device *bd;
1412
1413 memset(&props, 0, sizeof(struct backlight_properties));
1414 props.type = BACKLIGHT_PLATFORM;
1415 props.max_brightness = max_brightness;
1416 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1417 &props);
1418 if (IS_ERR(bd)) {
1419 pr_err("Could not register Acer backlight device\n");
1420 acer_backlight_device = NULL;
1421 return PTR_ERR(bd);
1422 }
1423
1424 acer_backlight_device = bd;
1425
1426 bd->props.power = FB_BLANK_UNBLANK;
1427 bd->props.brightness = read_brightness(bd);
1428 backlight_update_status(bd);
1429 return 0;
1430 }
1431
1432 static void acer_backlight_exit(void)
1433 {
1434 backlight_device_unregister(acer_backlight_device);
1435 }
1436
1437 /*
1438 * Accelerometer device
1439 */
1440 static acpi_handle gsensor_handle;
1441
1442 static int acer_gsensor_init(void)
1443 {
1444 acpi_status status;
1445 struct acpi_buffer output;
1446 union acpi_object out_obj;
1447
1448 output.length = sizeof(out_obj);
1449 output.pointer = &out_obj;
1450 status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1451 if (ACPI_FAILURE(status))
1452 return -1;
1453
1454 return 0;
1455 }
1456
1457 static int acer_gsensor_open(struct input_dev *input)
1458 {
1459 return acer_gsensor_init();
1460 }
1461
1462 static int acer_gsensor_event(void)
1463 {
1464 acpi_status status;
1465 struct acpi_buffer output;
1466 union acpi_object out_obj[5];
1467
1468 if (!has_cap(ACER_CAP_ACCEL))
1469 return -1;
1470
1471 output.length = sizeof(out_obj);
1472 output.pointer = out_obj;
1473
1474 status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1475 if (ACPI_FAILURE(status))
1476 return -1;
1477
1478 if (out_obj->package.count != 4)
1479 return -1;
1480
1481 input_report_abs(acer_wmi_accel_dev, ABS_X,
1482 (s16)out_obj->package.elements[0].integer.value);
1483 input_report_abs(acer_wmi_accel_dev, ABS_Y,
1484 (s16)out_obj->package.elements[1].integer.value);
1485 input_report_abs(acer_wmi_accel_dev, ABS_Z,
1486 (s16)out_obj->package.elements[2].integer.value);
1487 input_sync(acer_wmi_accel_dev);
1488 return 0;
1489 }
1490
1491 /*
1492 * Rfkill devices
1493 */
1494 static void acer_rfkill_update(struct work_struct *ignored);
1495 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1496 static void acer_rfkill_update(struct work_struct *ignored)
1497 {
1498 u32 state;
1499 acpi_status status;
1500
1501 if (has_cap(ACER_CAP_WIRELESS)) {
1502 status = get_u32(&state, ACER_CAP_WIRELESS);
1503 if (ACPI_SUCCESS(status)) {
1504 if (quirks->wireless == 3)
1505 rfkill_set_hw_state(wireless_rfkill, !state);
1506 else
1507 rfkill_set_sw_state(wireless_rfkill, !state);
1508 }
1509 }
1510
1511 if (has_cap(ACER_CAP_BLUETOOTH)) {
1512 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1513 if (ACPI_SUCCESS(status))
1514 rfkill_set_sw_state(bluetooth_rfkill, !state);
1515 }
1516
1517 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1518 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1519 if (ACPI_SUCCESS(status))
1520 rfkill_set_sw_state(threeg_rfkill, !state);
1521 }
1522
1523 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1524 }
1525
1526 static int acer_rfkill_set(void *data, bool blocked)
1527 {
1528 acpi_status status;
1529 u32 cap = (unsigned long)data;
1530
1531 if (rfkill_inited) {
1532 status = set_u32(!blocked, cap);
1533 if (ACPI_FAILURE(status))
1534 return -ENODEV;
1535 }
1536
1537 return 0;
1538 }
1539
1540 static const struct rfkill_ops acer_rfkill_ops = {
1541 .set_block = acer_rfkill_set,
1542 };
1543
1544 static struct rfkill *acer_rfkill_register(struct device *dev,
1545 enum rfkill_type type,
1546 char *name, u32 cap)
1547 {
1548 int err;
1549 struct rfkill *rfkill_dev;
1550 u32 state;
1551 acpi_status status;
1552
1553 rfkill_dev = rfkill_alloc(name, dev, type,
1554 &acer_rfkill_ops,
1555 (void *)(unsigned long)cap);
1556 if (!rfkill_dev)
1557 return ERR_PTR(-ENOMEM);
1558
1559 status = get_u32(&state, cap);
1560
1561 err = rfkill_register(rfkill_dev);
1562 if (err) {
1563 rfkill_destroy(rfkill_dev);
1564 return ERR_PTR(err);
1565 }
1566
1567 if (ACPI_SUCCESS(status))
1568 rfkill_set_sw_state(rfkill_dev, !state);
1569
1570 return rfkill_dev;
1571 }
1572
1573 static int acer_rfkill_init(struct device *dev)
1574 {
1575 int err;
1576
1577 if (has_cap(ACER_CAP_WIRELESS)) {
1578 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1579 "acer-wireless", ACER_CAP_WIRELESS);
1580 if (IS_ERR(wireless_rfkill)) {
1581 err = PTR_ERR(wireless_rfkill);
1582 goto error_wireless;
1583 }
1584 }
1585
1586 if (has_cap(ACER_CAP_BLUETOOTH)) {
1587 bluetooth_rfkill = acer_rfkill_register(dev,
1588 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1589 ACER_CAP_BLUETOOTH);
1590 if (IS_ERR(bluetooth_rfkill)) {
1591 err = PTR_ERR(bluetooth_rfkill);
1592 goto error_bluetooth;
1593 }
1594 }
1595
1596 if (has_cap(ACER_CAP_THREEG)) {
1597 threeg_rfkill = acer_rfkill_register(dev,
1598 RFKILL_TYPE_WWAN, "acer-threeg",
1599 ACER_CAP_THREEG);
1600 if (IS_ERR(threeg_rfkill)) {
1601 err = PTR_ERR(threeg_rfkill);
1602 goto error_threeg;
1603 }
1604 }
1605
1606 rfkill_inited = true;
1607
1608 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1609 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1610 schedule_delayed_work(&acer_rfkill_work,
1611 round_jiffies_relative(HZ));
1612
1613 return 0;
1614
1615 error_threeg:
1616 if (has_cap(ACER_CAP_BLUETOOTH)) {
1617 rfkill_unregister(bluetooth_rfkill);
1618 rfkill_destroy(bluetooth_rfkill);
1619 }
1620 error_bluetooth:
1621 if (has_cap(ACER_CAP_WIRELESS)) {
1622 rfkill_unregister(wireless_rfkill);
1623 rfkill_destroy(wireless_rfkill);
1624 }
1625 error_wireless:
1626 return err;
1627 }
1628
1629 static void acer_rfkill_exit(void)
1630 {
1631 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1632 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1633 cancel_delayed_work_sync(&acer_rfkill_work);
1634
1635 if (has_cap(ACER_CAP_WIRELESS)) {
1636 rfkill_unregister(wireless_rfkill);
1637 rfkill_destroy(wireless_rfkill);
1638 }
1639
1640 if (has_cap(ACER_CAP_BLUETOOTH)) {
1641 rfkill_unregister(bluetooth_rfkill);
1642 rfkill_destroy(bluetooth_rfkill);
1643 }
1644
1645 if (has_cap(ACER_CAP_THREEG)) {
1646 rfkill_unregister(threeg_rfkill);
1647 rfkill_destroy(threeg_rfkill);
1648 }
1649 return;
1650 }
1651
1652 /*
1653 * sysfs interface
1654 */
1655 static ssize_t show_bool_threeg(struct device *dev,
1656 struct device_attribute *attr, char *buf)
1657 {
1658 u32 result; \
1659 acpi_status status;
1660
1661 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1662 current->comm);
1663 status = get_u32(&result, ACER_CAP_THREEG);
1664 if (ACPI_SUCCESS(status))
1665 return sprintf(buf, "%u\n", result);
1666 return sprintf(buf, "Read error\n");
1667 }
1668
1669 static ssize_t set_bool_threeg(struct device *dev,
1670 struct device_attribute *attr, const char *buf, size_t count)
1671 {
1672 u32 tmp = simple_strtoul(buf, NULL, 10);
1673 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1674 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1675 current->comm);
1676 if (ACPI_FAILURE(status))
1677 return -EINVAL;
1678 return count;
1679 }
1680 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1681 set_bool_threeg);
1682
1683 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1684 char *buf)
1685 {
1686 pr_info("This interface sysfs will be removed in 2012 - used by: %s\n",
1687 current->comm);
1688 switch (interface->type) {
1689 case ACER_AMW0:
1690 return sprintf(buf, "AMW0\n");
1691 case ACER_AMW0_V2:
1692 return sprintf(buf, "AMW0 v2\n");
1693 case ACER_WMID:
1694 return sprintf(buf, "WMID\n");
1695 case ACER_WMID_v2:
1696 return sprintf(buf, "WMID v2\n");
1697 default:
1698 return sprintf(buf, "Error!\n");
1699 }
1700 }
1701
1702 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1703
1704 static void acer_wmi_notify(u32 value, void *context)
1705 {
1706 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1707 union acpi_object *obj;
1708 struct event_return_value return_value;
1709 acpi_status status;
1710 u16 device_state;
1711 const struct key_entry *key;
1712 u32 scancode;
1713
1714 status = wmi_get_event_data(value, &response);
1715 if (status != AE_OK) {
1716 pr_warn("bad event status 0x%x\n", status);
1717 return;
1718 }
1719
1720 obj = (union acpi_object *)response.pointer;
1721
1722 if (!obj)
1723 return;
1724 if (obj->type != ACPI_TYPE_BUFFER) {
1725 pr_warn("Unknown response received %d\n", obj->type);
1726 kfree(obj);
1727 return;
1728 }
1729 if (obj->buffer.length != 8) {
1730 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1731 kfree(obj);
1732 return;
1733 }
1734
1735 return_value = *((struct event_return_value *)obj->buffer.pointer);
1736 kfree(obj);
1737
1738 switch (return_value.function) {
1739 case WMID_HOTKEY_EVENT:
1740 device_state = return_value.device_state;
1741 pr_debug("device state: 0x%x\n", device_state);
1742
1743 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1744 return_value.key_num);
1745 if (!key) {
1746 pr_warn("Unknown key number - 0x%x\n",
1747 return_value.key_num);
1748 } else {
1749 scancode = return_value.key_num;
1750 switch (key->keycode) {
1751 case KEY_WLAN:
1752 case KEY_BLUETOOTH:
1753 if (has_cap(ACER_CAP_WIRELESS))
1754 rfkill_set_sw_state(wireless_rfkill,
1755 !(device_state & ACER_WMID3_GDS_WIRELESS));
1756 if (has_cap(ACER_CAP_THREEG))
1757 rfkill_set_sw_state(threeg_rfkill,
1758 !(device_state & ACER_WMID3_GDS_THREEG));
1759 if (has_cap(ACER_CAP_BLUETOOTH))
1760 rfkill_set_sw_state(bluetooth_rfkill,
1761 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1762 break;
1763 case KEY_TOUCHPAD_TOGGLE:
1764 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1765 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1766 }
1767 sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1768 }
1769 break;
1770 case WMID_ACCEL_EVENT:
1771 acer_gsensor_event();
1772 break;
1773 default:
1774 pr_warn("Unknown function number - %d - %d\n",
1775 return_value.function, return_value.key_num);
1776 break;
1777 }
1778 }
1779
1780 static acpi_status
1781 wmid3_set_lm_mode(struct lm_input_params *params,
1782 struct lm_return_value *return_value)
1783 {
1784 acpi_status status;
1785 union acpi_object *obj;
1786
1787 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1788 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1789
1790 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1791 if (ACPI_FAILURE(status))
1792 return status;
1793
1794 obj = output.pointer;
1795
1796 if (!obj)
1797 return AE_ERROR;
1798 else if (obj->type != ACPI_TYPE_BUFFER) {
1799 kfree(obj);
1800 return AE_ERROR;
1801 }
1802 if (obj->buffer.length != 4) {
1803 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1804 kfree(obj);
1805 return AE_ERROR;
1806 }
1807
1808 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1809 kfree(obj);
1810
1811 return status;
1812 }
1813
1814 static int acer_wmi_enable_ec_raw(void)
1815 {
1816 struct lm_return_value return_value;
1817 acpi_status status;
1818 struct lm_input_params params = {
1819 .function_num = 0x1,
1820 .commun_devices = 0xFFFF,
1821 .devices = 0xFFFF,
1822 .lm_status = 0x00, /* Launch Manager Deactive */
1823 };
1824
1825 status = wmid3_set_lm_mode(&params, &return_value);
1826
1827 if (return_value.error_code || return_value.ec_return_value)
1828 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1829 return_value.error_code,
1830 return_value.ec_return_value);
1831 else
1832 pr_info("Enabled EC raw mode\n");
1833
1834 return status;
1835 }
1836
1837 static int acer_wmi_enable_lm(void)
1838 {
1839 struct lm_return_value return_value;
1840 acpi_status status;
1841 struct lm_input_params params = {
1842 .function_num = 0x1,
1843 .commun_devices = 0xFFFF,
1844 .devices = 0xFFFF,
1845 .lm_status = 0x01, /* Launch Manager Active */
1846 };
1847
1848 status = wmid3_set_lm_mode(&params, &return_value);
1849
1850 if (return_value.error_code || return_value.ec_return_value)
1851 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1852 return_value.error_code,
1853 return_value.ec_return_value);
1854
1855 return status;
1856 }
1857
1858 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1859 void *ctx, void **retval)
1860 {
1861 *(acpi_handle *)retval = ah;
1862 return AE_OK;
1863 }
1864
1865 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1866 acpi_handle *ah)
1867 {
1868 acpi_status status;
1869 acpi_handle handle;
1870
1871 BUG_ON(!name || !ah);
1872
1873 handle = NULL;
1874 status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1875 (void *)name, &handle);
1876
1877 if (ACPI_SUCCESS(status)) {
1878 *ah = handle;
1879 return 0;
1880 } else {
1881 return -ENODEV;
1882 }
1883 }
1884
1885 static int __init acer_wmi_accel_setup(void)
1886 {
1887 int err;
1888
1889 err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1890 if (err)
1891 return err;
1892
1893 interface->capability |= ACER_CAP_ACCEL;
1894
1895 acer_wmi_accel_dev = input_allocate_device();
1896 if (!acer_wmi_accel_dev)
1897 return -ENOMEM;
1898
1899 acer_wmi_accel_dev->open = acer_gsensor_open;
1900
1901 acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1902 acer_wmi_accel_dev->phys = "wmi/input1";
1903 acer_wmi_accel_dev->id.bustype = BUS_HOST;
1904 acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1905 input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1906 input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1907 input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1908
1909 err = input_register_device(acer_wmi_accel_dev);
1910 if (err)
1911 goto err_free_dev;
1912
1913 return 0;
1914
1915 err_free_dev:
1916 input_free_device(acer_wmi_accel_dev);
1917 return err;
1918 }
1919
1920 static void acer_wmi_accel_destroy(void)
1921 {
1922 input_unregister_device(acer_wmi_accel_dev);
1923 }
1924
1925 static int __init acer_wmi_input_setup(void)
1926 {
1927 acpi_status status;
1928 int err;
1929
1930 acer_wmi_input_dev = input_allocate_device();
1931 if (!acer_wmi_input_dev)
1932 return -ENOMEM;
1933
1934 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1935 acer_wmi_input_dev->phys = "wmi/input0";
1936 acer_wmi_input_dev->id.bustype = BUS_HOST;
1937
1938 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1939 if (err)
1940 goto err_free_dev;
1941
1942 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1943 acer_wmi_notify, NULL);
1944 if (ACPI_FAILURE(status)) {
1945 err = -EIO;
1946 goto err_free_keymap;
1947 }
1948
1949 err = input_register_device(acer_wmi_input_dev);
1950 if (err)
1951 goto err_uninstall_notifier;
1952
1953 return 0;
1954
1955 err_uninstall_notifier:
1956 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1957 err_free_keymap:
1958 sparse_keymap_free(acer_wmi_input_dev);
1959 err_free_dev:
1960 input_free_device(acer_wmi_input_dev);
1961 return err;
1962 }
1963
1964 static void acer_wmi_input_destroy(void)
1965 {
1966 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1967 sparse_keymap_free(acer_wmi_input_dev);
1968 input_unregister_device(acer_wmi_input_dev);
1969 }
1970
1971 /*
1972 * debugfs functions
1973 */
1974 static u32 get_wmid_devices(void)
1975 {
1976 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1977 union acpi_object *obj;
1978 acpi_status status;
1979 u32 devices = 0;
1980
1981 status = wmi_query_block(WMID_GUID2, 1, &out);
1982 if (ACPI_FAILURE(status))
1983 return 0;
1984
1985 obj = (union acpi_object *) out.pointer;
1986 if (obj) {
1987 if (obj->type == ACPI_TYPE_BUFFER &&
1988 (obj->buffer.length == sizeof(u32) ||
1989 obj->buffer.length == sizeof(u64))) {
1990 devices = *((u32 *) obj->buffer.pointer);
1991 } else if (obj->type == ACPI_TYPE_INTEGER) {
1992 devices = (u32) obj->integer.value;
1993 }
1994 }
1995
1996 kfree(out.pointer);
1997 return devices;
1998 }
1999
2000 /*
2001 * Platform device
2002 */
2003 static int acer_platform_probe(struct platform_device *device)
2004 {
2005 int err;
2006
2007 if (has_cap(ACER_CAP_MAILLED)) {
2008 err = acer_led_init(&device->dev);
2009 if (err)
2010 goto error_mailled;
2011 }
2012
2013 if (has_cap(ACER_CAP_BRIGHTNESS)) {
2014 err = acer_backlight_init(&device->dev);
2015 if (err)
2016 goto error_brightness;
2017 }
2018
2019 err = acer_rfkill_init(&device->dev);
2020 if (err)
2021 goto error_rfkill;
2022
2023 return err;
2024
2025 error_rfkill:
2026 if (has_cap(ACER_CAP_BRIGHTNESS))
2027 acer_backlight_exit();
2028 error_brightness:
2029 if (has_cap(ACER_CAP_MAILLED))
2030 acer_led_exit();
2031 error_mailled:
2032 return err;
2033 }
2034
2035 static int acer_platform_remove(struct platform_device *device)
2036 {
2037 if (has_cap(ACER_CAP_MAILLED))
2038 acer_led_exit();
2039 if (has_cap(ACER_CAP_BRIGHTNESS))
2040 acer_backlight_exit();
2041
2042 acer_rfkill_exit();
2043 return 0;
2044 }
2045
2046 static int acer_suspend(struct device *dev)
2047 {
2048 u32 value;
2049 struct acer_data *data = &interface->data;
2050
2051 if (!data)
2052 return -ENOMEM;
2053
2054 if (has_cap(ACER_CAP_MAILLED)) {
2055 get_u32(&value, ACER_CAP_MAILLED);
2056 set_u32(LED_OFF, ACER_CAP_MAILLED);
2057 data->mailled = value;
2058 }
2059
2060 if (has_cap(ACER_CAP_BRIGHTNESS)) {
2061 get_u32(&value, ACER_CAP_BRIGHTNESS);
2062 data->brightness = value;
2063 }
2064
2065 return 0;
2066 }
2067
2068 static int acer_resume(struct device *dev)
2069 {
2070 struct acer_data *data = &interface->data;
2071
2072 if (!data)
2073 return -ENOMEM;
2074
2075 if (has_cap(ACER_CAP_MAILLED))
2076 set_u32(data->mailled, ACER_CAP_MAILLED);
2077
2078 if (has_cap(ACER_CAP_BRIGHTNESS))
2079 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2080
2081 if (has_cap(ACER_CAP_ACCEL))
2082 acer_gsensor_init();
2083
2084 return 0;
2085 }
2086
2087 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2088
2089 static void acer_platform_shutdown(struct platform_device *device)
2090 {
2091 struct acer_data *data = &interface->data;
2092
2093 if (!data)
2094 return;
2095
2096 if (has_cap(ACER_CAP_MAILLED))
2097 set_u32(LED_OFF, ACER_CAP_MAILLED);
2098 }
2099
2100 static struct platform_driver acer_platform_driver = {
2101 .driver = {
2102 .name = "acer-wmi",
2103 .owner = THIS_MODULE,
2104 .pm = &acer_pm,
2105 },
2106 .probe = acer_platform_probe,
2107 .remove = acer_platform_remove,
2108 .shutdown = acer_platform_shutdown,
2109 };
2110
2111 static struct platform_device *acer_platform_device;
2112
2113 static int remove_sysfs(struct platform_device *device)
2114 {
2115 if (has_cap(ACER_CAP_THREEG))
2116 device_remove_file(&device->dev, &dev_attr_threeg);
2117
2118 device_remove_file(&device->dev, &dev_attr_interface);
2119
2120 return 0;
2121 }
2122
2123 static int create_sysfs(void)
2124 {
2125 int retval = -ENOMEM;
2126
2127 if (has_cap(ACER_CAP_THREEG)) {
2128 retval = device_create_file(&acer_platform_device->dev,
2129 &dev_attr_threeg);
2130 if (retval)
2131 goto error_sysfs;
2132 }
2133
2134 retval = device_create_file(&acer_platform_device->dev,
2135 &dev_attr_interface);
2136 if (retval)
2137 goto error_sysfs;
2138
2139 return 0;
2140
2141 error_sysfs:
2142 remove_sysfs(acer_platform_device);
2143 return retval;
2144 }
2145
2146 static void remove_debugfs(void)
2147 {
2148 debugfs_remove(interface->debug.devices);
2149 debugfs_remove(interface->debug.root);
2150 }
2151
2152 static int create_debugfs(void)
2153 {
2154 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2155 if (!interface->debug.root) {
2156 pr_err("Failed to create debugfs directory");
2157 return -ENOMEM;
2158 }
2159
2160 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2161 interface->debug.root,
2162 &interface->debug.wmid_devices);
2163 if (!interface->debug.devices)
2164 goto error_debugfs;
2165
2166 return 0;
2167
2168 error_debugfs:
2169 remove_debugfs();
2170 return -ENOMEM;
2171 }
2172
2173 static int __init acer_wmi_init(void)
2174 {
2175 int err;
2176
2177 pr_info("Acer Laptop ACPI-WMI Extras\n");
2178
2179 if (dmi_check_system(acer_blacklist)) {
2180 pr_info("Blacklisted hardware detected - not loading\n");
2181 return -ENODEV;
2182 }
2183
2184 find_quirks();
2185
2186 /*
2187 * Detect which ACPI-WMI interface we're using.
2188 */
2189 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2190 interface = &AMW0_V2_interface;
2191
2192 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2193 interface = &wmid_interface;
2194
2195 if (wmi_has_guid(WMID_GUID3))
2196 interface = &wmid_v2_interface;
2197
2198 if (interface)
2199 dmi_walk(type_aa_dmi_decode, NULL);
2200
2201 if (wmi_has_guid(WMID_GUID2) && interface) {
2202 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2203 pr_err("Unable to detect available WMID devices\n");
2204 return -ENODEV;
2205 }
2206 /* WMID always provides brightness methods */
2207 interface->capability |= ACER_CAP_BRIGHTNESS;
2208 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2209 pr_err("No WMID device detection method found\n");
2210 return -ENODEV;
2211 }
2212
2213 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2214 interface = &AMW0_interface;
2215
2216 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2217 pr_err("Unable to detect available AMW0 devices\n");
2218 return -ENODEV;
2219 }
2220 }
2221
2222 if (wmi_has_guid(AMW0_GUID1))
2223 AMW0_find_mailled();
2224
2225 if (!interface) {
2226 pr_err("No or unsupported WMI interface, unable to load\n");
2227 return -ENODEV;
2228 }
2229
2230 set_quirks();
2231
2232 if (dmi_check_system(video_vendor_dmi_table))
2233 acpi_video_dmi_promote_vendor();
2234 if (acpi_video_backlight_support()) {
2235 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2236 pr_info("Brightness must be controlled by acpi video driver\n");
2237 } else {
2238 pr_info("Disabling ACPI video driver\n");
2239 acpi_video_unregister_backlight();
2240 }
2241
2242 if (wmi_has_guid(WMID_GUID3)) {
2243 if (ec_raw_mode) {
2244 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2245 pr_err("Cannot enable EC raw mode\n");
2246 return -ENODEV;
2247 }
2248 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2249 pr_err("Cannot enable Launch Manager mode\n");
2250 return -ENODEV;
2251 }
2252 } else if (ec_raw_mode) {
2253 pr_info("No WMID EC raw mode enable method\n");
2254 }
2255
2256 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2257 err = acer_wmi_input_setup();
2258 if (err)
2259 return err;
2260 }
2261
2262 acer_wmi_accel_setup();
2263
2264 err = platform_driver_register(&acer_platform_driver);
2265 if (err) {
2266 pr_err("Unable to register platform driver\n");
2267 goto error_platform_register;
2268 }
2269
2270 acer_platform_device = platform_device_alloc("acer-wmi", -1);
2271 if (!acer_platform_device) {
2272 err = -ENOMEM;
2273 goto error_device_alloc;
2274 }
2275
2276 err = platform_device_add(acer_platform_device);
2277 if (err)
2278 goto error_device_add;
2279
2280 err = create_sysfs();
2281 if (err)
2282 goto error_create_sys;
2283
2284 if (wmi_has_guid(WMID_GUID2)) {
2285 interface->debug.wmid_devices = get_wmid_devices();
2286 err = create_debugfs();
2287 if (err)
2288 goto error_create_debugfs;
2289 }
2290
2291 /* Override any initial settings with values from the commandline */
2292 acer_commandline_init();
2293
2294 return 0;
2295
2296 error_create_debugfs:
2297 remove_sysfs(acer_platform_device);
2298 error_create_sys:
2299 platform_device_del(acer_platform_device);
2300 error_device_add:
2301 platform_device_put(acer_platform_device);
2302 error_device_alloc:
2303 platform_driver_unregister(&acer_platform_driver);
2304 error_platform_register:
2305 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2306 acer_wmi_input_destroy();
2307 if (has_cap(ACER_CAP_ACCEL))
2308 acer_wmi_accel_destroy();
2309
2310 return err;
2311 }
2312
2313 static void __exit acer_wmi_exit(void)
2314 {
2315 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2316 acer_wmi_input_destroy();
2317
2318 if (has_cap(ACER_CAP_ACCEL))
2319 acer_wmi_accel_destroy();
2320
2321 remove_sysfs(acer_platform_device);
2322 remove_debugfs();
2323 platform_device_unregister(acer_platform_device);
2324 platform_driver_unregister(&acer_platform_driver);
2325
2326 pr_info("Acer Laptop WMI Extras unloaded\n");
2327 return;
2328 }
2329
2330 module_init(acer_wmi_init);
2331 module_exit(acer_wmi_exit);
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