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Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[deliverable/linux.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
45 #include <acpi/acpi_drivers.h>
46 #include <acpi/video.h>
47
48 MODULE_AUTHOR("Carlos Corbacho");
49 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
50 MODULE_LICENSE("GPL");
51
52 /*
53 * Magic Number
54 * Meaning is unknown - this number is required for writing to ACPI for AMW0
55 * (it's also used in acerhk when directly accessing the BIOS)
56 */
57 #define ACER_AMW0_WRITE 0x9610
58
59 /*
60 * Bit masks for the AMW0 interface
61 */
62 #define ACER_AMW0_WIRELESS_MASK 0x35
63 #define ACER_AMW0_BLUETOOTH_MASK 0x34
64 #define ACER_AMW0_MAILLED_MASK 0x31
65
66 /*
67 * Method IDs for WMID interface
68 */
69 #define ACER_WMID_GET_WIRELESS_METHODID 1
70 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
71 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
72 #define ACER_WMID_SET_WIRELESS_METHODID 4
73 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
74 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
75 #define ACER_WMID_GET_THREEG_METHODID 10
76 #define ACER_WMID_SET_THREEG_METHODID 11
77
78 /*
79 * Acer ACPI method GUIDs
80 */
81 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
82 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
83 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
84 #define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A"
85 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
86
87 /*
88 * Acer ACPI event GUIDs
89 */
90 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
91
92 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
93 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
94 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
95
96 enum acer_wmi_event_ids {
97 WMID_HOTKEY_EVENT = 0x1,
98 WMID_ACCEL_EVENT = 0x5,
99 };
100
101 static const struct key_entry acer_wmi_keymap[] = {
102 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
103 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */
104 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */
105 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
106 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
107 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
108 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
109 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
110 {KE_KEY, 0x29, {KEY_PROG3} }, /* P_Key for TM8372 */
111 {KE_IGNORE, 0x41, {KEY_MUTE} },
112 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
113 {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
114 {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
115 {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
116 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
117 {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
118 {KE_IGNORE, 0x45, {KEY_STOP} },
119 {KE_IGNORE, 0x50, {KEY_STOP} },
120 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
121 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
122 {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
123 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
124 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
125 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
126 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
127 {KE_IGNORE, 0x81, {KEY_SLEEP} },
128 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
129 {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
130 {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
131 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
132 {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
133 {KE_END, 0}
134 };
135
136 static struct input_dev *acer_wmi_input_dev;
137 static struct input_dev *acer_wmi_accel_dev;
138
139 struct event_return_value {
140 u8 function;
141 u8 key_num;
142 u16 device_state;
143 u32 reserved;
144 } __attribute__((packed));
145
146 /*
147 * GUID3 Get Device Status device flags
148 */
149 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
150 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
151 #define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
152 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
153 #define ACER_WMID3_GDS_TOUCHPAD (1<<1) /* Touchpad */
154
155 struct lm_input_params {
156 u8 function_num; /* Function Number */
157 u16 commun_devices; /* Communication type devices default status */
158 u16 devices; /* Other type devices default status */
159 u8 lm_status; /* Launch Manager Status */
160 u16 reserved;
161 } __attribute__((packed));
162
163 struct lm_return_value {
164 u8 error_code; /* Error Code */
165 u8 ec_return_value; /* EC Return Value */
166 u16 reserved;
167 } __attribute__((packed));
168
169 struct wmid3_gds_set_input_param { /* Set Device Status input parameter */
170 u8 function_num; /* Function Number */
171 u8 hotkey_number; /* Hotkey Number */
172 u16 devices; /* Set Device */
173 u8 volume_value; /* Volume Value */
174 } __attribute__((packed));
175
176 struct wmid3_gds_get_input_param { /* Get Device Status input parameter */
177 u8 function_num; /* Function Number */
178 u8 hotkey_number; /* Hotkey Number */
179 u16 devices; /* Get Device */
180 } __attribute__((packed));
181
182 struct wmid3_gds_return_value { /* Get Device Status return value*/
183 u8 error_code; /* Error Code */
184 u8 ec_return_value; /* EC Return Value */
185 u16 devices; /* Current Device Status */
186 u32 reserved;
187 } __attribute__((packed));
188
189 struct hotkey_function_type_aa {
190 u8 type;
191 u8 length;
192 u16 handle;
193 u16 commun_func_bitmap;
194 u16 application_func_bitmap;
195 u16 media_func_bitmap;
196 u16 display_func_bitmap;
197 u16 others_func_bitmap;
198 u8 commun_fn_key_number;
199 } __attribute__((packed));
200
201 /*
202 * Interface capability flags
203 */
204 #define ACER_CAP_MAILLED (1<<0)
205 #define ACER_CAP_WIRELESS (1<<1)
206 #define ACER_CAP_BLUETOOTH (1<<2)
207 #define ACER_CAP_BRIGHTNESS (1<<3)
208 #define ACER_CAP_THREEG (1<<4)
209 #define ACER_CAP_ACCEL (1<<5)
210 #define ACER_CAP_ANY (0xFFFFFFFF)
211
212 /*
213 * Interface type flags
214 */
215 enum interface_flags {
216 ACER_AMW0,
217 ACER_AMW0_V2,
218 ACER_WMID,
219 ACER_WMID_v2,
220 };
221
222 #define ACER_DEFAULT_WIRELESS 0
223 #define ACER_DEFAULT_BLUETOOTH 0
224 #define ACER_DEFAULT_MAILLED 0
225 #define ACER_DEFAULT_THREEG 0
226
227 static int max_brightness = 0xF;
228
229 static int mailled = -1;
230 static int brightness = -1;
231 static int threeg = -1;
232 static int force_series;
233 static bool ec_raw_mode;
234 static bool has_type_aa;
235 static u16 commun_func_bitmap;
236 static u8 commun_fn_key_number;
237
238 module_param(mailled, int, 0444);
239 module_param(brightness, int, 0444);
240 module_param(threeg, int, 0444);
241 module_param(force_series, int, 0444);
242 module_param(ec_raw_mode, bool, 0444);
243 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
244 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
245 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
246 MODULE_PARM_DESC(force_series, "Force a different laptop series");
247 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
248
249 struct acer_data {
250 int mailled;
251 int threeg;
252 int brightness;
253 };
254
255 struct acer_debug {
256 struct dentry *root;
257 struct dentry *devices;
258 u32 wmid_devices;
259 };
260
261 static struct rfkill *wireless_rfkill;
262 static struct rfkill *bluetooth_rfkill;
263 static struct rfkill *threeg_rfkill;
264 static bool rfkill_inited;
265
266 /* Each low-level interface must define at least some of the following */
267 struct wmi_interface {
268 /* The WMI device type */
269 u32 type;
270
271 /* The capabilities this interface provides */
272 u32 capability;
273
274 /* Private data for the current interface */
275 struct acer_data data;
276
277 /* debugfs entries associated with this interface */
278 struct acer_debug debug;
279 };
280
281 /* The static interface pointer, points to the currently detected interface */
282 static struct wmi_interface *interface;
283
284 /*
285 * Embedded Controller quirks
286 * Some laptops require us to directly access the EC to either enable or query
287 * features that are not available through WMI.
288 */
289
290 struct quirk_entry {
291 u8 wireless;
292 u8 mailled;
293 s8 brightness;
294 u8 bluetooth;
295 };
296
297 static struct quirk_entry *quirks;
298
299 static void set_quirks(void)
300 {
301 if (!interface)
302 return;
303
304 if (quirks->mailled)
305 interface->capability |= ACER_CAP_MAILLED;
306
307 if (quirks->brightness)
308 interface->capability |= ACER_CAP_BRIGHTNESS;
309 }
310
311 static int dmi_matched(const struct dmi_system_id *dmi)
312 {
313 quirks = dmi->driver_data;
314 return 1;
315 }
316
317 static struct quirk_entry quirk_unknown = {
318 };
319
320 static struct quirk_entry quirk_acer_aspire_1520 = {
321 .brightness = -1,
322 };
323
324 static struct quirk_entry quirk_acer_travelmate_2490 = {
325 .mailled = 1,
326 };
327
328 /* This AMW0 laptop has no bluetooth */
329 static struct quirk_entry quirk_medion_md_98300 = {
330 .wireless = 1,
331 };
332
333 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
334 .wireless = 2,
335 };
336
337 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
338 .wireless = 3,
339 };
340
341 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
342 static struct dmi_system_id acer_blacklist[] = {
343 {
344 .ident = "Acer Aspire One (SSD)",
345 .matches = {
346 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
347 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
348 },
349 },
350 {
351 .ident = "Acer Aspire One (HDD)",
352 .matches = {
353 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
354 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
355 },
356 },
357 {}
358 };
359
360 static struct dmi_system_id acer_quirks[] = {
361 {
362 .callback = dmi_matched,
363 .ident = "Acer Aspire 1360",
364 .matches = {
365 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
366 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
367 },
368 .driver_data = &quirk_acer_aspire_1520,
369 },
370 {
371 .callback = dmi_matched,
372 .ident = "Acer Aspire 1520",
373 .matches = {
374 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
375 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
376 },
377 .driver_data = &quirk_acer_aspire_1520,
378 },
379 {
380 .callback = dmi_matched,
381 .ident = "Acer Aspire 3100",
382 .matches = {
383 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
384 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
385 },
386 .driver_data = &quirk_acer_travelmate_2490,
387 },
388 {
389 .callback = dmi_matched,
390 .ident = "Acer Aspire 3610",
391 .matches = {
392 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
393 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
394 },
395 .driver_data = &quirk_acer_travelmate_2490,
396 },
397 {
398 .callback = dmi_matched,
399 .ident = "Acer Aspire 5100",
400 .matches = {
401 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
402 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
403 },
404 .driver_data = &quirk_acer_travelmate_2490,
405 },
406 {
407 .callback = dmi_matched,
408 .ident = "Acer Aspire 5610",
409 .matches = {
410 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
411 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
412 },
413 .driver_data = &quirk_acer_travelmate_2490,
414 },
415 {
416 .callback = dmi_matched,
417 .ident = "Acer Aspire 5630",
418 .matches = {
419 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
420 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
421 },
422 .driver_data = &quirk_acer_travelmate_2490,
423 },
424 {
425 .callback = dmi_matched,
426 .ident = "Acer Aspire 5650",
427 .matches = {
428 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
429 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
430 },
431 .driver_data = &quirk_acer_travelmate_2490,
432 },
433 {
434 .callback = dmi_matched,
435 .ident = "Acer Aspire 5680",
436 .matches = {
437 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
438 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
439 },
440 .driver_data = &quirk_acer_travelmate_2490,
441 },
442 {
443 .callback = dmi_matched,
444 .ident = "Acer Aspire 9110",
445 .matches = {
446 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
447 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
448 },
449 .driver_data = &quirk_acer_travelmate_2490,
450 },
451 {
452 .callback = dmi_matched,
453 .ident = "Acer TravelMate 2490",
454 .matches = {
455 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
456 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
457 },
458 .driver_data = &quirk_acer_travelmate_2490,
459 },
460 {
461 .callback = dmi_matched,
462 .ident = "Acer TravelMate 4200",
463 .matches = {
464 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
465 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
466 },
467 .driver_data = &quirk_acer_travelmate_2490,
468 },
469 {
470 .callback = dmi_matched,
471 .ident = "Fujitsu Siemens Amilo Li 1718",
472 .matches = {
473 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
474 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
475 },
476 .driver_data = &quirk_fujitsu_amilo_li_1718,
477 },
478 {
479 .callback = dmi_matched,
480 .ident = "Medion MD 98300",
481 .matches = {
482 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
483 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
484 },
485 .driver_data = &quirk_medion_md_98300,
486 },
487 {
488 .callback = dmi_matched,
489 .ident = "Lenovo Ideapad S205",
490 .matches = {
491 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
492 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
493 },
494 .driver_data = &quirk_lenovo_ideapad_s205,
495 },
496 {
497 .callback = dmi_matched,
498 .ident = "Lenovo Ideapad S205 (Brazos)",
499 .matches = {
500 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
501 DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
502 },
503 .driver_data = &quirk_lenovo_ideapad_s205,
504 },
505 {
506 .callback = dmi_matched,
507 .ident = "Lenovo 3000 N200",
508 .matches = {
509 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
510 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
511 },
512 .driver_data = &quirk_fujitsu_amilo_li_1718,
513 },
514 {
515 .callback = dmi_matched,
516 .ident = "Lenovo Ideapad S205-10382JG",
517 .matches = {
518 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
519 DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
520 },
521 .driver_data = &quirk_lenovo_ideapad_s205,
522 },
523 {
524 .callback = dmi_matched,
525 .ident = "Lenovo Ideapad S205-1038DPG",
526 .matches = {
527 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
528 DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
529 },
530 .driver_data = &quirk_lenovo_ideapad_s205,
531 },
532 {}
533 };
534
535 static int video_set_backlight_video_vendor(const struct dmi_system_id *d)
536 {
537 interface->capability &= ~ACER_CAP_BRIGHTNESS;
538 pr_info("Brightness must be controlled by generic video driver\n");
539 return 0;
540 }
541
542 static const struct dmi_system_id video_vendor_dmi_table[] = {
543 {
544 .callback = video_set_backlight_video_vendor,
545 .ident = "Acer TravelMate 4750",
546 .matches = {
547 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
548 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
549 },
550 },
551 {
552 .callback = video_set_backlight_video_vendor,
553 .ident = "Acer Extensa 5235",
554 .matches = {
555 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
556 DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
557 },
558 },
559 {
560 .callback = video_set_backlight_video_vendor,
561 .ident = "Acer TravelMate 5760",
562 .matches = {
563 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
564 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
565 },
566 },
567 {
568 .callback = video_set_backlight_video_vendor,
569 .ident = "Acer Aspire 5750",
570 .matches = {
571 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
572 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
573 },
574 },
575 {}
576 };
577
578 /* Find which quirks are needed for a particular vendor/ model pair */
579 static void find_quirks(void)
580 {
581 if (!force_series) {
582 dmi_check_system(acer_quirks);
583 } else if (force_series == 2490) {
584 quirks = &quirk_acer_travelmate_2490;
585 }
586
587 if (quirks == NULL)
588 quirks = &quirk_unknown;
589
590 set_quirks();
591 }
592
593 /*
594 * General interface convenience methods
595 */
596
597 static bool has_cap(u32 cap)
598 {
599 if ((interface->capability & cap) != 0)
600 return 1;
601
602 return 0;
603 }
604
605 /*
606 * AMW0 (V1) interface
607 */
608 struct wmab_args {
609 u32 eax;
610 u32 ebx;
611 u32 ecx;
612 u32 edx;
613 };
614
615 struct wmab_ret {
616 u32 eax;
617 u32 ebx;
618 u32 ecx;
619 u32 edx;
620 u32 eex;
621 };
622
623 static acpi_status wmab_execute(struct wmab_args *regbuf,
624 struct acpi_buffer *result)
625 {
626 struct acpi_buffer input;
627 acpi_status status;
628 input.length = sizeof(struct wmab_args);
629 input.pointer = (u8 *)regbuf;
630
631 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
632
633 return status;
634 }
635
636 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
637 {
638 int err;
639 u8 result;
640
641 switch (cap) {
642 case ACER_CAP_MAILLED:
643 switch (quirks->mailled) {
644 default:
645 err = ec_read(0xA, &result);
646 if (err)
647 return AE_ERROR;
648 *value = (result >> 7) & 0x1;
649 return AE_OK;
650 }
651 break;
652 case ACER_CAP_WIRELESS:
653 switch (quirks->wireless) {
654 case 1:
655 err = ec_read(0x7B, &result);
656 if (err)
657 return AE_ERROR;
658 *value = result & 0x1;
659 return AE_OK;
660 case 2:
661 err = ec_read(0x71, &result);
662 if (err)
663 return AE_ERROR;
664 *value = result & 0x1;
665 return AE_OK;
666 case 3:
667 err = ec_read(0x78, &result);
668 if (err)
669 return AE_ERROR;
670 *value = result & 0x1;
671 return AE_OK;
672 default:
673 err = ec_read(0xA, &result);
674 if (err)
675 return AE_ERROR;
676 *value = (result >> 2) & 0x1;
677 return AE_OK;
678 }
679 break;
680 case ACER_CAP_BLUETOOTH:
681 switch (quirks->bluetooth) {
682 default:
683 err = ec_read(0xA, &result);
684 if (err)
685 return AE_ERROR;
686 *value = (result >> 4) & 0x1;
687 return AE_OK;
688 }
689 break;
690 case ACER_CAP_BRIGHTNESS:
691 switch (quirks->brightness) {
692 default:
693 err = ec_read(0x83, &result);
694 if (err)
695 return AE_ERROR;
696 *value = result;
697 return AE_OK;
698 }
699 break;
700 default:
701 return AE_ERROR;
702 }
703 return AE_OK;
704 }
705
706 static acpi_status AMW0_set_u32(u32 value, u32 cap)
707 {
708 struct wmab_args args;
709
710 args.eax = ACER_AMW0_WRITE;
711 args.ebx = value ? (1<<8) : 0;
712 args.ecx = args.edx = 0;
713
714 switch (cap) {
715 case ACER_CAP_MAILLED:
716 if (value > 1)
717 return AE_BAD_PARAMETER;
718 args.ebx |= ACER_AMW0_MAILLED_MASK;
719 break;
720 case ACER_CAP_WIRELESS:
721 if (value > 1)
722 return AE_BAD_PARAMETER;
723 args.ebx |= ACER_AMW0_WIRELESS_MASK;
724 break;
725 case ACER_CAP_BLUETOOTH:
726 if (value > 1)
727 return AE_BAD_PARAMETER;
728 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
729 break;
730 case ACER_CAP_BRIGHTNESS:
731 if (value > max_brightness)
732 return AE_BAD_PARAMETER;
733 switch (quirks->brightness) {
734 default:
735 return ec_write(0x83, value);
736 break;
737 }
738 default:
739 return AE_ERROR;
740 }
741
742 /* Actually do the set */
743 return wmab_execute(&args, NULL);
744 }
745
746 static acpi_status AMW0_find_mailled(void)
747 {
748 struct wmab_args args;
749 struct wmab_ret ret;
750 acpi_status status = AE_OK;
751 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
752 union acpi_object *obj;
753
754 args.eax = 0x86;
755 args.ebx = args.ecx = args.edx = 0;
756
757 status = wmab_execute(&args, &out);
758 if (ACPI_FAILURE(status))
759 return status;
760
761 obj = (union acpi_object *) out.pointer;
762 if (obj && obj->type == ACPI_TYPE_BUFFER &&
763 obj->buffer.length == sizeof(struct wmab_ret)) {
764 ret = *((struct wmab_ret *) obj->buffer.pointer);
765 } else {
766 kfree(out.pointer);
767 return AE_ERROR;
768 }
769
770 if (ret.eex & 0x1)
771 interface->capability |= ACER_CAP_MAILLED;
772
773 kfree(out.pointer);
774
775 return AE_OK;
776 }
777
778 static int AMW0_set_cap_acpi_check_device_found;
779
780 static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
781 u32 level, void *context, void **retval)
782 {
783 AMW0_set_cap_acpi_check_device_found = 1;
784 return AE_OK;
785 }
786
787 static const struct acpi_device_id norfkill_ids[] = {
788 { "VPC2004", 0},
789 { "IBM0068", 0},
790 { "LEN0068", 0},
791 { "SNY5001", 0}, /* sony-laptop in charge */
792 { "", 0},
793 };
794
795 static int AMW0_set_cap_acpi_check_device(void)
796 {
797 const struct acpi_device_id *id;
798
799 for (id = norfkill_ids; id->id[0]; id++)
800 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
801 NULL, NULL);
802 return AMW0_set_cap_acpi_check_device_found;
803 }
804
805 static acpi_status AMW0_set_capabilities(void)
806 {
807 struct wmab_args args;
808 struct wmab_ret ret;
809 acpi_status status;
810 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
811 union acpi_object *obj;
812
813 /*
814 * On laptops with this strange GUID (non Acer), normal probing doesn't
815 * work.
816 */
817 if (wmi_has_guid(AMW0_GUID2)) {
818 if ((quirks != &quirk_unknown) ||
819 !AMW0_set_cap_acpi_check_device())
820 interface->capability |= ACER_CAP_WIRELESS;
821 return AE_OK;
822 }
823
824 args.eax = ACER_AMW0_WRITE;
825 args.ecx = args.edx = 0;
826
827 args.ebx = 0xa2 << 8;
828 args.ebx |= ACER_AMW0_WIRELESS_MASK;
829
830 status = wmab_execute(&args, &out);
831 if (ACPI_FAILURE(status))
832 return status;
833
834 obj = out.pointer;
835 if (obj && obj->type == ACPI_TYPE_BUFFER &&
836 obj->buffer.length == sizeof(struct wmab_ret)) {
837 ret = *((struct wmab_ret *) obj->buffer.pointer);
838 } else {
839 status = AE_ERROR;
840 goto out;
841 }
842
843 if (ret.eax & 0x1)
844 interface->capability |= ACER_CAP_WIRELESS;
845
846 args.ebx = 2 << 8;
847 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
848
849 /*
850 * It's ok to use existing buffer for next wmab_execute call.
851 * But we need to kfree(out.pointer) if next wmab_execute fail.
852 */
853 status = wmab_execute(&args, &out);
854 if (ACPI_FAILURE(status))
855 goto out;
856
857 obj = (union acpi_object *) out.pointer;
858 if (obj && obj->type == ACPI_TYPE_BUFFER
859 && obj->buffer.length == sizeof(struct wmab_ret)) {
860 ret = *((struct wmab_ret *) obj->buffer.pointer);
861 } else {
862 status = AE_ERROR;
863 goto out;
864 }
865
866 if (ret.eax & 0x1)
867 interface->capability |= ACER_CAP_BLUETOOTH;
868
869 /*
870 * This appears to be safe to enable, since all Wistron based laptops
871 * appear to use the same EC register for brightness, even if they
872 * differ for wireless, etc
873 */
874 if (quirks->brightness >= 0)
875 interface->capability |= ACER_CAP_BRIGHTNESS;
876
877 status = AE_OK;
878 out:
879 kfree(out.pointer);
880 return status;
881 }
882
883 static struct wmi_interface AMW0_interface = {
884 .type = ACER_AMW0,
885 };
886
887 static struct wmi_interface AMW0_V2_interface = {
888 .type = ACER_AMW0_V2,
889 };
890
891 /*
892 * New interface (The WMID interface)
893 */
894 static acpi_status
895 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
896 {
897 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
898 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
899 union acpi_object *obj;
900 u32 tmp = 0;
901 acpi_status status;
902
903 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
904
905 if (ACPI_FAILURE(status))
906 return status;
907
908 obj = (union acpi_object *) result.pointer;
909 if (obj) {
910 if (obj->type == ACPI_TYPE_BUFFER &&
911 (obj->buffer.length == sizeof(u32) ||
912 obj->buffer.length == sizeof(u64))) {
913 tmp = *((u32 *) obj->buffer.pointer);
914 } else if (obj->type == ACPI_TYPE_INTEGER) {
915 tmp = (u32) obj->integer.value;
916 }
917 }
918
919 if (out)
920 *out = tmp;
921
922 kfree(result.pointer);
923
924 return status;
925 }
926
927 static acpi_status WMID_get_u32(u32 *value, u32 cap)
928 {
929 acpi_status status;
930 u8 tmp;
931 u32 result, method_id = 0;
932
933 switch (cap) {
934 case ACER_CAP_WIRELESS:
935 method_id = ACER_WMID_GET_WIRELESS_METHODID;
936 break;
937 case ACER_CAP_BLUETOOTH:
938 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
939 break;
940 case ACER_CAP_BRIGHTNESS:
941 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
942 break;
943 case ACER_CAP_THREEG:
944 method_id = ACER_WMID_GET_THREEG_METHODID;
945 break;
946 case ACER_CAP_MAILLED:
947 if (quirks->mailled == 1) {
948 ec_read(0x9f, &tmp);
949 *value = tmp & 0x1;
950 return 0;
951 }
952 default:
953 return AE_ERROR;
954 }
955 status = WMI_execute_u32(method_id, 0, &result);
956
957 if (ACPI_SUCCESS(status))
958 *value = (u8)result;
959
960 return status;
961 }
962
963 static acpi_status WMID_set_u32(u32 value, u32 cap)
964 {
965 u32 method_id = 0;
966 char param;
967
968 switch (cap) {
969 case ACER_CAP_BRIGHTNESS:
970 if (value > max_brightness)
971 return AE_BAD_PARAMETER;
972 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
973 break;
974 case ACER_CAP_WIRELESS:
975 if (value > 1)
976 return AE_BAD_PARAMETER;
977 method_id = ACER_WMID_SET_WIRELESS_METHODID;
978 break;
979 case ACER_CAP_BLUETOOTH:
980 if (value > 1)
981 return AE_BAD_PARAMETER;
982 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
983 break;
984 case ACER_CAP_THREEG:
985 if (value > 1)
986 return AE_BAD_PARAMETER;
987 method_id = ACER_WMID_SET_THREEG_METHODID;
988 break;
989 case ACER_CAP_MAILLED:
990 if (value > 1)
991 return AE_BAD_PARAMETER;
992 if (quirks->mailled == 1) {
993 param = value ? 0x92 : 0x93;
994 i8042_lock_chip();
995 i8042_command(&param, 0x1059);
996 i8042_unlock_chip();
997 return 0;
998 }
999 break;
1000 default:
1001 return AE_ERROR;
1002 }
1003 return WMI_execute_u32(method_id, (u32)value, NULL);
1004 }
1005
1006 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1007 {
1008 struct wmid3_gds_return_value return_value;
1009 acpi_status status;
1010 union acpi_object *obj;
1011 struct wmid3_gds_get_input_param params = {
1012 .function_num = 0x1,
1013 .hotkey_number = commun_fn_key_number,
1014 .devices = device,
1015 };
1016 struct acpi_buffer input = {
1017 sizeof(struct wmid3_gds_get_input_param),
1018 &params
1019 };
1020 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1021
1022 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1023 if (ACPI_FAILURE(status))
1024 return status;
1025
1026 obj = output.pointer;
1027
1028 if (!obj)
1029 return AE_ERROR;
1030 else if (obj->type != ACPI_TYPE_BUFFER) {
1031 kfree(obj);
1032 return AE_ERROR;
1033 }
1034 if (obj->buffer.length != 8) {
1035 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1036 kfree(obj);
1037 return AE_ERROR;
1038 }
1039
1040 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1041 kfree(obj);
1042
1043 if (return_value.error_code || return_value.ec_return_value)
1044 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1045 device,
1046 return_value.error_code,
1047 return_value.ec_return_value);
1048 else
1049 *value = !!(return_value.devices & device);
1050
1051 return status;
1052 }
1053
1054 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1055 {
1056 u16 device;
1057
1058 switch (cap) {
1059 case ACER_CAP_WIRELESS:
1060 device = ACER_WMID3_GDS_WIRELESS;
1061 break;
1062 case ACER_CAP_BLUETOOTH:
1063 device = ACER_WMID3_GDS_BLUETOOTH;
1064 break;
1065 case ACER_CAP_THREEG:
1066 device = ACER_WMID3_GDS_THREEG;
1067 break;
1068 default:
1069 return AE_ERROR;
1070 }
1071 return wmid3_get_device_status(value, device);
1072 }
1073
1074 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1075 {
1076 struct wmid3_gds_return_value return_value;
1077 acpi_status status;
1078 union acpi_object *obj;
1079 u16 devices;
1080 struct wmid3_gds_get_input_param get_params = {
1081 .function_num = 0x1,
1082 .hotkey_number = commun_fn_key_number,
1083 .devices = commun_func_bitmap,
1084 };
1085 struct acpi_buffer get_input = {
1086 sizeof(struct wmid3_gds_get_input_param),
1087 &get_params
1088 };
1089 struct wmid3_gds_set_input_param set_params = {
1090 .function_num = 0x2,
1091 .hotkey_number = commun_fn_key_number,
1092 .devices = commun_func_bitmap,
1093 };
1094 struct acpi_buffer set_input = {
1095 sizeof(struct wmid3_gds_set_input_param),
1096 &set_params
1097 };
1098 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1099 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1100
1101 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1102 if (ACPI_FAILURE(status))
1103 return status;
1104
1105 obj = output.pointer;
1106
1107 if (!obj)
1108 return AE_ERROR;
1109 else if (obj->type != ACPI_TYPE_BUFFER) {
1110 kfree(obj);
1111 return AE_ERROR;
1112 }
1113 if (obj->buffer.length != 8) {
1114 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1115 kfree(obj);
1116 return AE_ERROR;
1117 }
1118
1119 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1120 kfree(obj);
1121
1122 if (return_value.error_code || return_value.ec_return_value) {
1123 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1124 return_value.error_code,
1125 return_value.ec_return_value);
1126 return status;
1127 }
1128
1129 devices = return_value.devices;
1130 set_params.devices = (value) ? (devices | device) : (devices & ~device);
1131
1132 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1133 if (ACPI_FAILURE(status))
1134 return status;
1135
1136 obj = output2.pointer;
1137
1138 if (!obj)
1139 return AE_ERROR;
1140 else if (obj->type != ACPI_TYPE_BUFFER) {
1141 kfree(obj);
1142 return AE_ERROR;
1143 }
1144 if (obj->buffer.length != 4) {
1145 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1146 kfree(obj);
1147 return AE_ERROR;
1148 }
1149
1150 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1151 kfree(obj);
1152
1153 if (return_value.error_code || return_value.ec_return_value)
1154 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1155 return_value.error_code,
1156 return_value.ec_return_value);
1157
1158 return status;
1159 }
1160
1161 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1162 {
1163 u16 device;
1164
1165 switch (cap) {
1166 case ACER_CAP_WIRELESS:
1167 device = ACER_WMID3_GDS_WIRELESS;
1168 break;
1169 case ACER_CAP_BLUETOOTH:
1170 device = ACER_WMID3_GDS_BLUETOOTH;
1171 break;
1172 case ACER_CAP_THREEG:
1173 device = ACER_WMID3_GDS_THREEG;
1174 break;
1175 default:
1176 return AE_ERROR;
1177 }
1178 return wmid3_set_device_status(value, device);
1179 }
1180
1181 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1182 {
1183 struct hotkey_function_type_aa *type_aa;
1184
1185 /* We are looking for OEM-specific Type AAh */
1186 if (header->type != 0xAA)
1187 return;
1188
1189 has_type_aa = true;
1190 type_aa = (struct hotkey_function_type_aa *) header;
1191
1192 pr_info("Function bitmap for Communication Button: 0x%x\n",
1193 type_aa->commun_func_bitmap);
1194 commun_func_bitmap = type_aa->commun_func_bitmap;
1195
1196 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1197 interface->capability |= ACER_CAP_WIRELESS;
1198 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1199 interface->capability |= ACER_CAP_THREEG;
1200 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1201 interface->capability |= ACER_CAP_BLUETOOTH;
1202
1203 commun_fn_key_number = type_aa->commun_fn_key_number;
1204 }
1205
1206 static acpi_status WMID_set_capabilities(void)
1207 {
1208 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1209 union acpi_object *obj;
1210 acpi_status status;
1211 u32 devices;
1212
1213 status = wmi_query_block(WMID_GUID2, 1, &out);
1214 if (ACPI_FAILURE(status))
1215 return status;
1216
1217 obj = (union acpi_object *) out.pointer;
1218 if (obj) {
1219 if (obj->type == ACPI_TYPE_BUFFER &&
1220 (obj->buffer.length == sizeof(u32) ||
1221 obj->buffer.length == sizeof(u64))) {
1222 devices = *((u32 *) obj->buffer.pointer);
1223 } else if (obj->type == ACPI_TYPE_INTEGER) {
1224 devices = (u32) obj->integer.value;
1225 } else {
1226 kfree(out.pointer);
1227 return AE_ERROR;
1228 }
1229 } else {
1230 kfree(out.pointer);
1231 return AE_ERROR;
1232 }
1233
1234 pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1235 if (devices & 0x07)
1236 interface->capability |= ACER_CAP_WIRELESS;
1237 if (devices & 0x40)
1238 interface->capability |= ACER_CAP_THREEG;
1239 if (devices & 0x10)
1240 interface->capability |= ACER_CAP_BLUETOOTH;
1241
1242 if (!(devices & 0x20))
1243 max_brightness = 0x9;
1244
1245 kfree(out.pointer);
1246 return status;
1247 }
1248
1249 static struct wmi_interface wmid_interface = {
1250 .type = ACER_WMID,
1251 };
1252
1253 static struct wmi_interface wmid_v2_interface = {
1254 .type = ACER_WMID_v2,
1255 };
1256
1257 /*
1258 * Generic Device (interface-independent)
1259 */
1260
1261 static acpi_status get_u32(u32 *value, u32 cap)
1262 {
1263 acpi_status status = AE_ERROR;
1264
1265 switch (interface->type) {
1266 case ACER_AMW0:
1267 status = AMW0_get_u32(value, cap);
1268 break;
1269 case ACER_AMW0_V2:
1270 if (cap == ACER_CAP_MAILLED) {
1271 status = AMW0_get_u32(value, cap);
1272 break;
1273 }
1274 case ACER_WMID:
1275 status = WMID_get_u32(value, cap);
1276 break;
1277 case ACER_WMID_v2:
1278 if (cap & (ACER_CAP_WIRELESS |
1279 ACER_CAP_BLUETOOTH |
1280 ACER_CAP_THREEG))
1281 status = wmid_v2_get_u32(value, cap);
1282 else if (wmi_has_guid(WMID_GUID2))
1283 status = WMID_get_u32(value, cap);
1284 break;
1285 }
1286
1287 return status;
1288 }
1289
1290 static acpi_status set_u32(u32 value, u32 cap)
1291 {
1292 acpi_status status;
1293
1294 if (interface->capability & cap) {
1295 switch (interface->type) {
1296 case ACER_AMW0:
1297 return AMW0_set_u32(value, cap);
1298 case ACER_AMW0_V2:
1299 if (cap == ACER_CAP_MAILLED)
1300 return AMW0_set_u32(value, cap);
1301
1302 /*
1303 * On some models, some WMID methods don't toggle
1304 * properly. For those cases, we want to run the AMW0
1305 * method afterwards to be certain we've really toggled
1306 * the device state.
1307 */
1308 if (cap == ACER_CAP_WIRELESS ||
1309 cap == ACER_CAP_BLUETOOTH) {
1310 status = WMID_set_u32(value, cap);
1311 if (ACPI_FAILURE(status))
1312 return status;
1313
1314 return AMW0_set_u32(value, cap);
1315 }
1316 case ACER_WMID:
1317 return WMID_set_u32(value, cap);
1318 case ACER_WMID_v2:
1319 if (cap & (ACER_CAP_WIRELESS |
1320 ACER_CAP_BLUETOOTH |
1321 ACER_CAP_THREEG))
1322 return wmid_v2_set_u32(value, cap);
1323 else if (wmi_has_guid(WMID_GUID2))
1324 return WMID_set_u32(value, cap);
1325 default:
1326 return AE_BAD_PARAMETER;
1327 }
1328 }
1329 return AE_BAD_PARAMETER;
1330 }
1331
1332 static void __init acer_commandline_init(void)
1333 {
1334 /*
1335 * These will all fail silently if the value given is invalid, or the
1336 * capability isn't available on the given interface
1337 */
1338 if (mailled >= 0)
1339 set_u32(mailled, ACER_CAP_MAILLED);
1340 if (!has_type_aa && threeg >= 0)
1341 set_u32(threeg, ACER_CAP_THREEG);
1342 if (brightness >= 0)
1343 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1344 }
1345
1346 /*
1347 * LED device (Mail LED only, no other LEDs known yet)
1348 */
1349 static void mail_led_set(struct led_classdev *led_cdev,
1350 enum led_brightness value)
1351 {
1352 set_u32(value, ACER_CAP_MAILLED);
1353 }
1354
1355 static struct led_classdev mail_led = {
1356 .name = "acer-wmi::mail",
1357 .brightness_set = mail_led_set,
1358 };
1359
1360 static int acer_led_init(struct device *dev)
1361 {
1362 return led_classdev_register(dev, &mail_led);
1363 }
1364
1365 static void acer_led_exit(void)
1366 {
1367 set_u32(LED_OFF, ACER_CAP_MAILLED);
1368 led_classdev_unregister(&mail_led);
1369 }
1370
1371 /*
1372 * Backlight device
1373 */
1374 static struct backlight_device *acer_backlight_device;
1375
1376 static int read_brightness(struct backlight_device *bd)
1377 {
1378 u32 value;
1379 get_u32(&value, ACER_CAP_BRIGHTNESS);
1380 return value;
1381 }
1382
1383 static int update_bl_status(struct backlight_device *bd)
1384 {
1385 int intensity = bd->props.brightness;
1386
1387 if (bd->props.power != FB_BLANK_UNBLANK)
1388 intensity = 0;
1389 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1390 intensity = 0;
1391
1392 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1393
1394 return 0;
1395 }
1396
1397 static const struct backlight_ops acer_bl_ops = {
1398 .get_brightness = read_brightness,
1399 .update_status = update_bl_status,
1400 };
1401
1402 static int acer_backlight_init(struct device *dev)
1403 {
1404 struct backlight_properties props;
1405 struct backlight_device *bd;
1406
1407 memset(&props, 0, sizeof(struct backlight_properties));
1408 props.type = BACKLIGHT_PLATFORM;
1409 props.max_brightness = max_brightness;
1410 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1411 &props);
1412 if (IS_ERR(bd)) {
1413 pr_err("Could not register Acer backlight device\n");
1414 acer_backlight_device = NULL;
1415 return PTR_ERR(bd);
1416 }
1417
1418 acer_backlight_device = bd;
1419
1420 bd->props.power = FB_BLANK_UNBLANK;
1421 bd->props.brightness = read_brightness(bd);
1422 backlight_update_status(bd);
1423 return 0;
1424 }
1425
1426 static void acer_backlight_exit(void)
1427 {
1428 backlight_device_unregister(acer_backlight_device);
1429 }
1430
1431 /*
1432 * Accelerometer device
1433 */
1434 static acpi_handle gsensor_handle;
1435
1436 static int acer_gsensor_init(void)
1437 {
1438 acpi_status status;
1439 struct acpi_buffer output;
1440 union acpi_object out_obj;
1441
1442 output.length = sizeof(out_obj);
1443 output.pointer = &out_obj;
1444 status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1445 if (ACPI_FAILURE(status))
1446 return -1;
1447
1448 return 0;
1449 }
1450
1451 static int acer_gsensor_open(struct input_dev *input)
1452 {
1453 return acer_gsensor_init();
1454 }
1455
1456 static int acer_gsensor_event(void)
1457 {
1458 acpi_status status;
1459 struct acpi_buffer output;
1460 union acpi_object out_obj[5];
1461
1462 if (!has_cap(ACER_CAP_ACCEL))
1463 return -1;
1464
1465 output.length = sizeof(out_obj);
1466 output.pointer = out_obj;
1467
1468 status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1469 if (ACPI_FAILURE(status))
1470 return -1;
1471
1472 if (out_obj->package.count != 4)
1473 return -1;
1474
1475 input_report_abs(acer_wmi_accel_dev, ABS_X,
1476 (s16)out_obj->package.elements[0].integer.value);
1477 input_report_abs(acer_wmi_accel_dev, ABS_Y,
1478 (s16)out_obj->package.elements[1].integer.value);
1479 input_report_abs(acer_wmi_accel_dev, ABS_Z,
1480 (s16)out_obj->package.elements[2].integer.value);
1481 input_sync(acer_wmi_accel_dev);
1482 return 0;
1483 }
1484
1485 /*
1486 * Rfkill devices
1487 */
1488 static void acer_rfkill_update(struct work_struct *ignored);
1489 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1490 static void acer_rfkill_update(struct work_struct *ignored)
1491 {
1492 u32 state;
1493 acpi_status status;
1494
1495 if (has_cap(ACER_CAP_WIRELESS)) {
1496 status = get_u32(&state, ACER_CAP_WIRELESS);
1497 if (ACPI_SUCCESS(status)) {
1498 if (quirks->wireless == 3)
1499 rfkill_set_hw_state(wireless_rfkill, !state);
1500 else
1501 rfkill_set_sw_state(wireless_rfkill, !state);
1502 }
1503 }
1504
1505 if (has_cap(ACER_CAP_BLUETOOTH)) {
1506 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1507 if (ACPI_SUCCESS(status))
1508 rfkill_set_sw_state(bluetooth_rfkill, !state);
1509 }
1510
1511 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1512 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1513 if (ACPI_SUCCESS(status))
1514 rfkill_set_sw_state(threeg_rfkill, !state);
1515 }
1516
1517 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1518 }
1519
1520 static int acer_rfkill_set(void *data, bool blocked)
1521 {
1522 acpi_status status;
1523 u32 cap = (unsigned long)data;
1524
1525 if (rfkill_inited) {
1526 status = set_u32(!blocked, cap);
1527 if (ACPI_FAILURE(status))
1528 return -ENODEV;
1529 }
1530
1531 return 0;
1532 }
1533
1534 static const struct rfkill_ops acer_rfkill_ops = {
1535 .set_block = acer_rfkill_set,
1536 };
1537
1538 static struct rfkill *acer_rfkill_register(struct device *dev,
1539 enum rfkill_type type,
1540 char *name, u32 cap)
1541 {
1542 int err;
1543 struct rfkill *rfkill_dev;
1544 u32 state;
1545 acpi_status status;
1546
1547 rfkill_dev = rfkill_alloc(name, dev, type,
1548 &acer_rfkill_ops,
1549 (void *)(unsigned long)cap);
1550 if (!rfkill_dev)
1551 return ERR_PTR(-ENOMEM);
1552
1553 status = get_u32(&state, cap);
1554
1555 err = rfkill_register(rfkill_dev);
1556 if (err) {
1557 rfkill_destroy(rfkill_dev);
1558 return ERR_PTR(err);
1559 }
1560
1561 if (ACPI_SUCCESS(status))
1562 rfkill_set_sw_state(rfkill_dev, !state);
1563
1564 return rfkill_dev;
1565 }
1566
1567 static int acer_rfkill_init(struct device *dev)
1568 {
1569 int err;
1570
1571 if (has_cap(ACER_CAP_WIRELESS)) {
1572 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1573 "acer-wireless", ACER_CAP_WIRELESS);
1574 if (IS_ERR(wireless_rfkill)) {
1575 err = PTR_ERR(wireless_rfkill);
1576 goto error_wireless;
1577 }
1578 }
1579
1580 if (has_cap(ACER_CAP_BLUETOOTH)) {
1581 bluetooth_rfkill = acer_rfkill_register(dev,
1582 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1583 ACER_CAP_BLUETOOTH);
1584 if (IS_ERR(bluetooth_rfkill)) {
1585 err = PTR_ERR(bluetooth_rfkill);
1586 goto error_bluetooth;
1587 }
1588 }
1589
1590 if (has_cap(ACER_CAP_THREEG)) {
1591 threeg_rfkill = acer_rfkill_register(dev,
1592 RFKILL_TYPE_WWAN, "acer-threeg",
1593 ACER_CAP_THREEG);
1594 if (IS_ERR(threeg_rfkill)) {
1595 err = PTR_ERR(threeg_rfkill);
1596 goto error_threeg;
1597 }
1598 }
1599
1600 rfkill_inited = true;
1601
1602 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1603 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1604 schedule_delayed_work(&acer_rfkill_work,
1605 round_jiffies_relative(HZ));
1606
1607 return 0;
1608
1609 error_threeg:
1610 if (has_cap(ACER_CAP_BLUETOOTH)) {
1611 rfkill_unregister(bluetooth_rfkill);
1612 rfkill_destroy(bluetooth_rfkill);
1613 }
1614 error_bluetooth:
1615 if (has_cap(ACER_CAP_WIRELESS)) {
1616 rfkill_unregister(wireless_rfkill);
1617 rfkill_destroy(wireless_rfkill);
1618 }
1619 error_wireless:
1620 return err;
1621 }
1622
1623 static void acer_rfkill_exit(void)
1624 {
1625 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1626 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1627 cancel_delayed_work_sync(&acer_rfkill_work);
1628
1629 if (has_cap(ACER_CAP_WIRELESS)) {
1630 rfkill_unregister(wireless_rfkill);
1631 rfkill_destroy(wireless_rfkill);
1632 }
1633
1634 if (has_cap(ACER_CAP_BLUETOOTH)) {
1635 rfkill_unregister(bluetooth_rfkill);
1636 rfkill_destroy(bluetooth_rfkill);
1637 }
1638
1639 if (has_cap(ACER_CAP_THREEG)) {
1640 rfkill_unregister(threeg_rfkill);
1641 rfkill_destroy(threeg_rfkill);
1642 }
1643 return;
1644 }
1645
1646 /*
1647 * sysfs interface
1648 */
1649 static ssize_t show_bool_threeg(struct device *dev,
1650 struct device_attribute *attr, char *buf)
1651 {
1652 u32 result; \
1653 acpi_status status;
1654
1655 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1656 current->comm);
1657 status = get_u32(&result, ACER_CAP_THREEG);
1658 if (ACPI_SUCCESS(status))
1659 return sprintf(buf, "%u\n", result);
1660 return sprintf(buf, "Read error\n");
1661 }
1662
1663 static ssize_t set_bool_threeg(struct device *dev,
1664 struct device_attribute *attr, const char *buf, size_t count)
1665 {
1666 u32 tmp = simple_strtoul(buf, NULL, 10);
1667 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1668 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1669 current->comm);
1670 if (ACPI_FAILURE(status))
1671 return -EINVAL;
1672 return count;
1673 }
1674 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1675 set_bool_threeg);
1676
1677 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1678 char *buf)
1679 {
1680 pr_info("This interface sysfs will be removed in 2012 - used by: %s\n",
1681 current->comm);
1682 switch (interface->type) {
1683 case ACER_AMW0:
1684 return sprintf(buf, "AMW0\n");
1685 case ACER_AMW0_V2:
1686 return sprintf(buf, "AMW0 v2\n");
1687 case ACER_WMID:
1688 return sprintf(buf, "WMID\n");
1689 case ACER_WMID_v2:
1690 return sprintf(buf, "WMID v2\n");
1691 default:
1692 return sprintf(buf, "Error!\n");
1693 }
1694 }
1695
1696 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1697
1698 static void acer_wmi_notify(u32 value, void *context)
1699 {
1700 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1701 union acpi_object *obj;
1702 struct event_return_value return_value;
1703 acpi_status status;
1704 u16 device_state;
1705 const struct key_entry *key;
1706 u32 scancode;
1707
1708 status = wmi_get_event_data(value, &response);
1709 if (status != AE_OK) {
1710 pr_warn("bad event status 0x%x\n", status);
1711 return;
1712 }
1713
1714 obj = (union acpi_object *)response.pointer;
1715
1716 if (!obj)
1717 return;
1718 if (obj->type != ACPI_TYPE_BUFFER) {
1719 pr_warn("Unknown response received %d\n", obj->type);
1720 kfree(obj);
1721 return;
1722 }
1723 if (obj->buffer.length != 8) {
1724 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1725 kfree(obj);
1726 return;
1727 }
1728
1729 return_value = *((struct event_return_value *)obj->buffer.pointer);
1730 kfree(obj);
1731
1732 switch (return_value.function) {
1733 case WMID_HOTKEY_EVENT:
1734 device_state = return_value.device_state;
1735 pr_debug("device state: 0x%x\n", device_state);
1736
1737 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1738 return_value.key_num);
1739 if (!key) {
1740 pr_warn("Unknown key number - 0x%x\n",
1741 return_value.key_num);
1742 } else {
1743 scancode = return_value.key_num;
1744 switch (key->keycode) {
1745 case KEY_WLAN:
1746 case KEY_BLUETOOTH:
1747 if (has_cap(ACER_CAP_WIRELESS))
1748 rfkill_set_sw_state(wireless_rfkill,
1749 !(device_state & ACER_WMID3_GDS_WIRELESS));
1750 if (has_cap(ACER_CAP_THREEG))
1751 rfkill_set_sw_state(threeg_rfkill,
1752 !(device_state & ACER_WMID3_GDS_THREEG));
1753 if (has_cap(ACER_CAP_BLUETOOTH))
1754 rfkill_set_sw_state(bluetooth_rfkill,
1755 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1756 break;
1757 case KEY_TOUCHPAD_TOGGLE:
1758 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1759 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1760 }
1761 sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1762 }
1763 break;
1764 case WMID_ACCEL_EVENT:
1765 acer_gsensor_event();
1766 break;
1767 default:
1768 pr_warn("Unknown function number - %d - %d\n",
1769 return_value.function, return_value.key_num);
1770 break;
1771 }
1772 }
1773
1774 static acpi_status
1775 wmid3_set_lm_mode(struct lm_input_params *params,
1776 struct lm_return_value *return_value)
1777 {
1778 acpi_status status;
1779 union acpi_object *obj;
1780
1781 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1782 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1783
1784 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1785 if (ACPI_FAILURE(status))
1786 return status;
1787
1788 obj = output.pointer;
1789
1790 if (!obj)
1791 return AE_ERROR;
1792 else if (obj->type != ACPI_TYPE_BUFFER) {
1793 kfree(obj);
1794 return AE_ERROR;
1795 }
1796 if (obj->buffer.length != 4) {
1797 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1798 kfree(obj);
1799 return AE_ERROR;
1800 }
1801
1802 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1803 kfree(obj);
1804
1805 return status;
1806 }
1807
1808 static int acer_wmi_enable_ec_raw(void)
1809 {
1810 struct lm_return_value return_value;
1811 acpi_status status;
1812 struct lm_input_params params = {
1813 .function_num = 0x1,
1814 .commun_devices = 0xFFFF,
1815 .devices = 0xFFFF,
1816 .lm_status = 0x00, /* Launch Manager Deactive */
1817 };
1818
1819 status = wmid3_set_lm_mode(&params, &return_value);
1820
1821 if (return_value.error_code || return_value.ec_return_value)
1822 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1823 return_value.error_code,
1824 return_value.ec_return_value);
1825 else
1826 pr_info("Enabled EC raw mode\n");
1827
1828 return status;
1829 }
1830
1831 static int acer_wmi_enable_lm(void)
1832 {
1833 struct lm_return_value return_value;
1834 acpi_status status;
1835 struct lm_input_params params = {
1836 .function_num = 0x1,
1837 .commun_devices = 0xFFFF,
1838 .devices = 0xFFFF,
1839 .lm_status = 0x01, /* Launch Manager Active */
1840 };
1841
1842 status = wmid3_set_lm_mode(&params, &return_value);
1843
1844 if (return_value.error_code || return_value.ec_return_value)
1845 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1846 return_value.error_code,
1847 return_value.ec_return_value);
1848
1849 return status;
1850 }
1851
1852 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1853 void *ctx, void **retval)
1854 {
1855 *(acpi_handle *)retval = ah;
1856 return AE_OK;
1857 }
1858
1859 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1860 acpi_handle *ah)
1861 {
1862 acpi_status status;
1863 acpi_handle handle;
1864
1865 BUG_ON(!name || !ah);
1866
1867 handle = NULL;
1868 status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1869 (void *)name, &handle);
1870
1871 if (ACPI_SUCCESS(status)) {
1872 *ah = handle;
1873 return 0;
1874 } else {
1875 return -ENODEV;
1876 }
1877 }
1878
1879 static int __init acer_wmi_accel_setup(void)
1880 {
1881 int err;
1882
1883 err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1884 if (err)
1885 return err;
1886
1887 interface->capability |= ACER_CAP_ACCEL;
1888
1889 acer_wmi_accel_dev = input_allocate_device();
1890 if (!acer_wmi_accel_dev)
1891 return -ENOMEM;
1892
1893 acer_wmi_accel_dev->open = acer_gsensor_open;
1894
1895 acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1896 acer_wmi_accel_dev->phys = "wmi/input1";
1897 acer_wmi_accel_dev->id.bustype = BUS_HOST;
1898 acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1899 input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1900 input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1901 input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1902
1903 err = input_register_device(acer_wmi_accel_dev);
1904 if (err)
1905 goto err_free_dev;
1906
1907 return 0;
1908
1909 err_free_dev:
1910 input_free_device(acer_wmi_accel_dev);
1911 return err;
1912 }
1913
1914 static void acer_wmi_accel_destroy(void)
1915 {
1916 input_unregister_device(acer_wmi_accel_dev);
1917 }
1918
1919 static int __init acer_wmi_input_setup(void)
1920 {
1921 acpi_status status;
1922 int err;
1923
1924 acer_wmi_input_dev = input_allocate_device();
1925 if (!acer_wmi_input_dev)
1926 return -ENOMEM;
1927
1928 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1929 acer_wmi_input_dev->phys = "wmi/input0";
1930 acer_wmi_input_dev->id.bustype = BUS_HOST;
1931
1932 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1933 if (err)
1934 goto err_free_dev;
1935
1936 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1937 acer_wmi_notify, NULL);
1938 if (ACPI_FAILURE(status)) {
1939 err = -EIO;
1940 goto err_free_keymap;
1941 }
1942
1943 err = input_register_device(acer_wmi_input_dev);
1944 if (err)
1945 goto err_uninstall_notifier;
1946
1947 return 0;
1948
1949 err_uninstall_notifier:
1950 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1951 err_free_keymap:
1952 sparse_keymap_free(acer_wmi_input_dev);
1953 err_free_dev:
1954 input_free_device(acer_wmi_input_dev);
1955 return err;
1956 }
1957
1958 static void acer_wmi_input_destroy(void)
1959 {
1960 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1961 sparse_keymap_free(acer_wmi_input_dev);
1962 input_unregister_device(acer_wmi_input_dev);
1963 }
1964
1965 /*
1966 * debugfs functions
1967 */
1968 static u32 get_wmid_devices(void)
1969 {
1970 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1971 union acpi_object *obj;
1972 acpi_status status;
1973 u32 devices = 0;
1974
1975 status = wmi_query_block(WMID_GUID2, 1, &out);
1976 if (ACPI_FAILURE(status))
1977 return 0;
1978
1979 obj = (union acpi_object *) out.pointer;
1980 if (obj) {
1981 if (obj->type == ACPI_TYPE_BUFFER &&
1982 (obj->buffer.length == sizeof(u32) ||
1983 obj->buffer.length == sizeof(u64))) {
1984 devices = *((u32 *) obj->buffer.pointer);
1985 } else if (obj->type == ACPI_TYPE_INTEGER) {
1986 devices = (u32) obj->integer.value;
1987 }
1988 }
1989
1990 kfree(out.pointer);
1991 return devices;
1992 }
1993
1994 /*
1995 * Platform device
1996 */
1997 static int acer_platform_probe(struct platform_device *device)
1998 {
1999 int err;
2000
2001 if (has_cap(ACER_CAP_MAILLED)) {
2002 err = acer_led_init(&device->dev);
2003 if (err)
2004 goto error_mailled;
2005 }
2006
2007 if (has_cap(ACER_CAP_BRIGHTNESS)) {
2008 err = acer_backlight_init(&device->dev);
2009 if (err)
2010 goto error_brightness;
2011 }
2012
2013 err = acer_rfkill_init(&device->dev);
2014 if (err)
2015 goto error_rfkill;
2016
2017 return err;
2018
2019 error_rfkill:
2020 if (has_cap(ACER_CAP_BRIGHTNESS))
2021 acer_backlight_exit();
2022 error_brightness:
2023 if (has_cap(ACER_CAP_MAILLED))
2024 acer_led_exit();
2025 error_mailled:
2026 return err;
2027 }
2028
2029 static int acer_platform_remove(struct platform_device *device)
2030 {
2031 if (has_cap(ACER_CAP_MAILLED))
2032 acer_led_exit();
2033 if (has_cap(ACER_CAP_BRIGHTNESS))
2034 acer_backlight_exit();
2035
2036 acer_rfkill_exit();
2037 return 0;
2038 }
2039
2040 static int acer_suspend(struct device *dev)
2041 {
2042 u32 value;
2043 struct acer_data *data = &interface->data;
2044
2045 if (!data)
2046 return -ENOMEM;
2047
2048 if (has_cap(ACER_CAP_MAILLED)) {
2049 get_u32(&value, ACER_CAP_MAILLED);
2050 set_u32(LED_OFF, ACER_CAP_MAILLED);
2051 data->mailled = value;
2052 }
2053
2054 if (has_cap(ACER_CAP_BRIGHTNESS)) {
2055 get_u32(&value, ACER_CAP_BRIGHTNESS);
2056 data->brightness = value;
2057 }
2058
2059 return 0;
2060 }
2061
2062 static int acer_resume(struct device *dev)
2063 {
2064 struct acer_data *data = &interface->data;
2065
2066 if (!data)
2067 return -ENOMEM;
2068
2069 if (has_cap(ACER_CAP_MAILLED))
2070 set_u32(data->mailled, ACER_CAP_MAILLED);
2071
2072 if (has_cap(ACER_CAP_BRIGHTNESS))
2073 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2074
2075 if (has_cap(ACER_CAP_ACCEL))
2076 acer_gsensor_init();
2077
2078 return 0;
2079 }
2080
2081 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2082
2083 static void acer_platform_shutdown(struct platform_device *device)
2084 {
2085 struct acer_data *data = &interface->data;
2086
2087 if (!data)
2088 return;
2089
2090 if (has_cap(ACER_CAP_MAILLED))
2091 set_u32(LED_OFF, ACER_CAP_MAILLED);
2092 }
2093
2094 static struct platform_driver acer_platform_driver = {
2095 .driver = {
2096 .name = "acer-wmi",
2097 .owner = THIS_MODULE,
2098 .pm = &acer_pm,
2099 },
2100 .probe = acer_platform_probe,
2101 .remove = acer_platform_remove,
2102 .shutdown = acer_platform_shutdown,
2103 };
2104
2105 static struct platform_device *acer_platform_device;
2106
2107 static int remove_sysfs(struct platform_device *device)
2108 {
2109 if (has_cap(ACER_CAP_THREEG))
2110 device_remove_file(&device->dev, &dev_attr_threeg);
2111
2112 device_remove_file(&device->dev, &dev_attr_interface);
2113
2114 return 0;
2115 }
2116
2117 static int create_sysfs(void)
2118 {
2119 int retval = -ENOMEM;
2120
2121 if (has_cap(ACER_CAP_THREEG)) {
2122 retval = device_create_file(&acer_platform_device->dev,
2123 &dev_attr_threeg);
2124 if (retval)
2125 goto error_sysfs;
2126 }
2127
2128 retval = device_create_file(&acer_platform_device->dev,
2129 &dev_attr_interface);
2130 if (retval)
2131 goto error_sysfs;
2132
2133 return 0;
2134
2135 error_sysfs:
2136 remove_sysfs(acer_platform_device);
2137 return retval;
2138 }
2139
2140 static void remove_debugfs(void)
2141 {
2142 debugfs_remove(interface->debug.devices);
2143 debugfs_remove(interface->debug.root);
2144 }
2145
2146 static int create_debugfs(void)
2147 {
2148 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2149 if (!interface->debug.root) {
2150 pr_err("Failed to create debugfs directory");
2151 return -ENOMEM;
2152 }
2153
2154 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2155 interface->debug.root,
2156 &interface->debug.wmid_devices);
2157 if (!interface->debug.devices)
2158 goto error_debugfs;
2159
2160 return 0;
2161
2162 error_debugfs:
2163 remove_debugfs();
2164 return -ENOMEM;
2165 }
2166
2167 static int __init acer_wmi_init(void)
2168 {
2169 int err;
2170
2171 pr_info("Acer Laptop ACPI-WMI Extras\n");
2172
2173 if (dmi_check_system(acer_blacklist)) {
2174 pr_info("Blacklisted hardware detected - not loading\n");
2175 return -ENODEV;
2176 }
2177
2178 find_quirks();
2179
2180 /*
2181 * Detect which ACPI-WMI interface we're using.
2182 */
2183 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2184 interface = &AMW0_V2_interface;
2185
2186 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2187 interface = &wmid_interface;
2188
2189 if (wmi_has_guid(WMID_GUID3))
2190 interface = &wmid_v2_interface;
2191
2192 if (interface)
2193 dmi_walk(type_aa_dmi_decode, NULL);
2194
2195 if (wmi_has_guid(WMID_GUID2) && interface) {
2196 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2197 pr_err("Unable to detect available WMID devices\n");
2198 return -ENODEV;
2199 }
2200 /* WMID always provides brightness methods */
2201 interface->capability |= ACER_CAP_BRIGHTNESS;
2202 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2203 pr_err("No WMID device detection method found\n");
2204 return -ENODEV;
2205 }
2206
2207 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2208 interface = &AMW0_interface;
2209
2210 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2211 pr_err("Unable to detect available AMW0 devices\n");
2212 return -ENODEV;
2213 }
2214 }
2215
2216 if (wmi_has_guid(AMW0_GUID1))
2217 AMW0_find_mailled();
2218
2219 if (!interface) {
2220 pr_err("No or unsupported WMI interface, unable to load\n");
2221 return -ENODEV;
2222 }
2223
2224 set_quirks();
2225
2226 if (dmi_check_system(video_vendor_dmi_table))
2227 acpi_video_dmi_promote_vendor();
2228 if (acpi_video_backlight_support()) {
2229 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2230 pr_info("Brightness must be controlled by acpi video driver\n");
2231 } else {
2232 pr_info("Disabling ACPI video driver\n");
2233 acpi_video_unregister();
2234 }
2235
2236 if (wmi_has_guid(WMID_GUID3)) {
2237 if (ec_raw_mode) {
2238 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2239 pr_err("Cannot enable EC raw mode\n");
2240 return -ENODEV;
2241 }
2242 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2243 pr_err("Cannot enable Launch Manager mode\n");
2244 return -ENODEV;
2245 }
2246 } else if (ec_raw_mode) {
2247 pr_info("No WMID EC raw mode enable method\n");
2248 }
2249
2250 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2251 err = acer_wmi_input_setup();
2252 if (err)
2253 return err;
2254 }
2255
2256 acer_wmi_accel_setup();
2257
2258 err = platform_driver_register(&acer_platform_driver);
2259 if (err) {
2260 pr_err("Unable to register platform driver\n");
2261 goto error_platform_register;
2262 }
2263
2264 acer_platform_device = platform_device_alloc("acer-wmi", -1);
2265 if (!acer_platform_device) {
2266 err = -ENOMEM;
2267 goto error_device_alloc;
2268 }
2269
2270 err = platform_device_add(acer_platform_device);
2271 if (err)
2272 goto error_device_add;
2273
2274 err = create_sysfs();
2275 if (err)
2276 goto error_create_sys;
2277
2278 if (wmi_has_guid(WMID_GUID2)) {
2279 interface->debug.wmid_devices = get_wmid_devices();
2280 err = create_debugfs();
2281 if (err)
2282 goto error_create_debugfs;
2283 }
2284
2285 /* Override any initial settings with values from the commandline */
2286 acer_commandline_init();
2287
2288 return 0;
2289
2290 error_create_debugfs:
2291 remove_sysfs(acer_platform_device);
2292 error_create_sys:
2293 platform_device_del(acer_platform_device);
2294 error_device_add:
2295 platform_device_put(acer_platform_device);
2296 error_device_alloc:
2297 platform_driver_unregister(&acer_platform_driver);
2298 error_platform_register:
2299 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2300 acer_wmi_input_destroy();
2301 if (has_cap(ACER_CAP_ACCEL))
2302 acer_wmi_accel_destroy();
2303
2304 return err;
2305 }
2306
2307 static void __exit acer_wmi_exit(void)
2308 {
2309 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2310 acer_wmi_input_destroy();
2311
2312 if (has_cap(ACER_CAP_ACCEL))
2313 acer_wmi_accel_destroy();
2314
2315 remove_sysfs(acer_platform_device);
2316 remove_debugfs();
2317 platform_device_unregister(acer_platform_device);
2318 platform_driver_unregister(&acer_platform_driver);
2319
2320 pr_info("Acer Laptop WMI Extras unloaded\n");
2321 return;
2322 }
2323
2324 module_init(acer_wmi_init);
2325 module_exit(acer_wmi_exit);
Linux kernel - Deliverables
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