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xhci: Add SuperSpeedPlus high bandwidth isoc support to xhci endpoints
[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 #include <acpi/video.h>
45
46 MODULE_AUTHOR("Carlos Corbacho");
47 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
48 MODULE_LICENSE("GPL");
49
50 /*
51 * Magic Number
52 * Meaning is unknown - this number is required for writing to ACPI for AMW0
53 * (it's also used in acerhk when directly accessing the BIOS)
54 */
55 #define ACER_AMW0_WRITE 0x9610
56
57 /*
58 * Bit masks for the AMW0 interface
59 */
60 #define ACER_AMW0_WIRELESS_MASK 0x35
61 #define ACER_AMW0_BLUETOOTH_MASK 0x34
62 #define ACER_AMW0_MAILLED_MASK 0x31
63
64 /*
65 * Method IDs for WMID interface
66 */
67 #define ACER_WMID_GET_WIRELESS_METHODID 1
68 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
69 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
70 #define ACER_WMID_SET_WIRELESS_METHODID 4
71 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
72 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
73 #define ACER_WMID_GET_THREEG_METHODID 10
74 #define ACER_WMID_SET_THREEG_METHODID 11
75
76 /*
77 * Acer ACPI method GUIDs
78 */
79 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
80 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
81 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
82 #define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A"
83 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
84
85 /*
86 * Acer ACPI event GUIDs
87 */
88 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
89
90 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
91 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
92 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
93
94 enum acer_wmi_event_ids {
95 WMID_HOTKEY_EVENT = 0x1,
96 WMID_ACCEL_EVENT = 0x5,
97 };
98
99 static const struct key_entry acer_wmi_keymap[] __initconst = {
100 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
101 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */
102 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */
103 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
104 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
105 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
106 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
107 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
108 {KE_KEY, 0x29, {KEY_PROG3} }, /* P_Key for TM8372 */
109 {KE_IGNORE, 0x41, {KEY_MUTE} },
110 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
111 {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
112 {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
113 {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
114 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
115 {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
116 {KE_IGNORE, 0x45, {KEY_STOP} },
117 {KE_IGNORE, 0x50, {KEY_STOP} },
118 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
119 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
120 {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
121 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
122 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
123 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
124 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
125 {KE_IGNORE, 0x81, {KEY_SLEEP} },
126 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
127 {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
128 {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
129 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
130 {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
131 {KE_END, 0}
132 };
133
134 static struct input_dev *acer_wmi_input_dev;
135 static struct input_dev *acer_wmi_accel_dev;
136
137 struct event_return_value {
138 u8 function;
139 u8 key_num;
140 u16 device_state;
141 u32 reserved;
142 } __attribute__((packed));
143
144 /*
145 * GUID3 Get Device Status device flags
146 */
147 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
148 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
149 #define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
150 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
151 #define ACER_WMID3_GDS_TOUCHPAD (1<<1) /* Touchpad */
152
153 struct lm_input_params {
154 u8 function_num; /* Function Number */
155 u16 commun_devices; /* Communication type devices default status */
156 u16 devices; /* Other type devices default status */
157 u8 lm_status; /* Launch Manager Status */
158 u16 reserved;
159 } __attribute__((packed));
160
161 struct lm_return_value {
162 u8 error_code; /* Error Code */
163 u8 ec_return_value; /* EC Return Value */
164 u16 reserved;
165 } __attribute__((packed));
166
167 struct wmid3_gds_set_input_param { /* Set Device Status input parameter */
168 u8 function_num; /* Function Number */
169 u8 hotkey_number; /* Hotkey Number */
170 u16 devices; /* Set Device */
171 u8 volume_value; /* Volume Value */
172 } __attribute__((packed));
173
174 struct wmid3_gds_get_input_param { /* Get Device Status input parameter */
175 u8 function_num; /* Function Number */
176 u8 hotkey_number; /* Hotkey Number */
177 u16 devices; /* Get Device */
178 } __attribute__((packed));
179
180 struct wmid3_gds_return_value { /* Get Device Status return value*/
181 u8 error_code; /* Error Code */
182 u8 ec_return_value; /* EC Return Value */
183 u16 devices; /* Current Device Status */
184 u32 reserved;
185 } __attribute__((packed));
186
187 struct hotkey_function_type_aa {
188 u8 type;
189 u8 length;
190 u16 handle;
191 u16 commun_func_bitmap;
192 u16 application_func_bitmap;
193 u16 media_func_bitmap;
194 u16 display_func_bitmap;
195 u16 others_func_bitmap;
196 u8 commun_fn_key_number;
197 } __attribute__((packed));
198
199 /*
200 * Interface capability flags
201 */
202 #define ACER_CAP_MAILLED (1<<0)
203 #define ACER_CAP_WIRELESS (1<<1)
204 #define ACER_CAP_BLUETOOTH (1<<2)
205 #define ACER_CAP_BRIGHTNESS (1<<3)
206 #define ACER_CAP_THREEG (1<<4)
207 #define ACER_CAP_ACCEL (1<<5)
208 #define ACER_CAP_ANY (0xFFFFFFFF)
209
210 /*
211 * Interface type flags
212 */
213 enum interface_flags {
214 ACER_AMW0,
215 ACER_AMW0_V2,
216 ACER_WMID,
217 ACER_WMID_v2,
218 };
219
220 #define ACER_DEFAULT_WIRELESS 0
221 #define ACER_DEFAULT_BLUETOOTH 0
222 #define ACER_DEFAULT_MAILLED 0
223 #define ACER_DEFAULT_THREEG 0
224
225 static int max_brightness = 0xF;
226
227 static int mailled = -1;
228 static int brightness = -1;
229 static int threeg = -1;
230 static int force_series;
231 static bool ec_raw_mode;
232 static bool has_type_aa;
233 static u16 commun_func_bitmap;
234 static u8 commun_fn_key_number;
235
236 module_param(mailled, int, 0444);
237 module_param(brightness, int, 0444);
238 module_param(threeg, int, 0444);
239 module_param(force_series, int, 0444);
240 module_param(ec_raw_mode, bool, 0444);
241 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
242 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
243 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
244 MODULE_PARM_DESC(force_series, "Force a different laptop series");
245 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
246
247 struct acer_data {
248 int mailled;
249 int threeg;
250 int brightness;
251 };
252
253 struct acer_debug {
254 struct dentry *root;
255 struct dentry *devices;
256 u32 wmid_devices;
257 };
258
259 static struct rfkill *wireless_rfkill;
260 static struct rfkill *bluetooth_rfkill;
261 static struct rfkill *threeg_rfkill;
262 static bool rfkill_inited;
263
264 /* Each low-level interface must define at least some of the following */
265 struct wmi_interface {
266 /* The WMI device type */
267 u32 type;
268
269 /* The capabilities this interface provides */
270 u32 capability;
271
272 /* Private data for the current interface */
273 struct acer_data data;
274
275 /* debugfs entries associated with this interface */
276 struct acer_debug debug;
277 };
278
279 /* The static interface pointer, points to the currently detected interface */
280 static struct wmi_interface *interface;
281
282 /*
283 * Embedded Controller quirks
284 * Some laptops require us to directly access the EC to either enable or query
285 * features that are not available through WMI.
286 */
287
288 struct quirk_entry {
289 u8 wireless;
290 u8 mailled;
291 s8 brightness;
292 u8 bluetooth;
293 };
294
295 static struct quirk_entry *quirks;
296
297 static void __init set_quirks(void)
298 {
299 if (!interface)
300 return;
301
302 if (quirks->mailled)
303 interface->capability |= ACER_CAP_MAILLED;
304
305 if (quirks->brightness)
306 interface->capability |= ACER_CAP_BRIGHTNESS;
307 }
308
309 static int __init dmi_matched(const struct dmi_system_id *dmi)
310 {
311 quirks = dmi->driver_data;
312 return 1;
313 }
314
315 static struct quirk_entry quirk_unknown = {
316 };
317
318 static struct quirk_entry quirk_acer_aspire_1520 = {
319 .brightness = -1,
320 };
321
322 static struct quirk_entry quirk_acer_travelmate_2490 = {
323 .mailled = 1,
324 };
325
326 /* This AMW0 laptop has no bluetooth */
327 static struct quirk_entry quirk_medion_md_98300 = {
328 .wireless = 1,
329 };
330
331 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
332 .wireless = 2,
333 };
334
335 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
336 .wireless = 3,
337 };
338
339 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
340 static const struct dmi_system_id acer_blacklist[] __initconst = {
341 {
342 .ident = "Acer Aspire One (SSD)",
343 .matches = {
344 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
345 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
346 },
347 },
348 {
349 .ident = "Acer Aspire One (HDD)",
350 .matches = {
351 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
352 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
353 },
354 },
355 {}
356 };
357
358 static const struct dmi_system_id acer_quirks[] __initconst = {
359 {
360 .callback = dmi_matched,
361 .ident = "Acer Aspire 1360",
362 .matches = {
363 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
364 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
365 },
366 .driver_data = &quirk_acer_aspire_1520,
367 },
368 {
369 .callback = dmi_matched,
370 .ident = "Acer Aspire 1520",
371 .matches = {
372 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
373 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
374 },
375 .driver_data = &quirk_acer_aspire_1520,
376 },
377 {
378 .callback = dmi_matched,
379 .ident = "Acer Aspire 3100",
380 .matches = {
381 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
382 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
383 },
384 .driver_data = &quirk_acer_travelmate_2490,
385 },
386 {
387 .callback = dmi_matched,
388 .ident = "Acer Aspire 3610",
389 .matches = {
390 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
391 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
392 },
393 .driver_data = &quirk_acer_travelmate_2490,
394 },
395 {
396 .callback = dmi_matched,
397 .ident = "Acer Aspire 5100",
398 .matches = {
399 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
400 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
401 },
402 .driver_data = &quirk_acer_travelmate_2490,
403 },
404 {
405 .callback = dmi_matched,
406 .ident = "Acer Aspire 5610",
407 .matches = {
408 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
409 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
410 },
411 .driver_data = &quirk_acer_travelmate_2490,
412 },
413 {
414 .callback = dmi_matched,
415 .ident = "Acer Aspire 5630",
416 .matches = {
417 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
418 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
419 },
420 .driver_data = &quirk_acer_travelmate_2490,
421 },
422 {
423 .callback = dmi_matched,
424 .ident = "Acer Aspire 5650",
425 .matches = {
426 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
427 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
428 },
429 .driver_data = &quirk_acer_travelmate_2490,
430 },
431 {
432 .callback = dmi_matched,
433 .ident = "Acer Aspire 5680",
434 .matches = {
435 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
436 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
437 },
438 .driver_data = &quirk_acer_travelmate_2490,
439 },
440 {
441 .callback = dmi_matched,
442 .ident = "Acer Aspire 9110",
443 .matches = {
444 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
445 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
446 },
447 .driver_data = &quirk_acer_travelmate_2490,
448 },
449 {
450 .callback = dmi_matched,
451 .ident = "Acer TravelMate 2490",
452 .matches = {
453 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
454 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
455 },
456 .driver_data = &quirk_acer_travelmate_2490,
457 },
458 {
459 .callback = dmi_matched,
460 .ident = "Acer TravelMate 4200",
461 .matches = {
462 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
463 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
464 },
465 .driver_data = &quirk_acer_travelmate_2490,
466 },
467 {
468 .callback = dmi_matched,
469 .ident = "Fujitsu Siemens Amilo Li 1718",
470 .matches = {
471 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
472 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
473 },
474 .driver_data = &quirk_fujitsu_amilo_li_1718,
475 },
476 {
477 .callback = dmi_matched,
478 .ident = "Medion MD 98300",
479 .matches = {
480 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
481 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
482 },
483 .driver_data = &quirk_medion_md_98300,
484 },
485 {
486 .callback = dmi_matched,
487 .ident = "Lenovo Ideapad S205",
488 .matches = {
489 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
490 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
491 },
492 .driver_data = &quirk_lenovo_ideapad_s205,
493 },
494 {
495 .callback = dmi_matched,
496 .ident = "Lenovo Ideapad S205 (Brazos)",
497 .matches = {
498 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
499 DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
500 },
501 .driver_data = &quirk_lenovo_ideapad_s205,
502 },
503 {
504 .callback = dmi_matched,
505 .ident = "Lenovo 3000 N200",
506 .matches = {
507 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
508 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
509 },
510 .driver_data = &quirk_fujitsu_amilo_li_1718,
511 },
512 {
513 .callback = dmi_matched,
514 .ident = "Lenovo Ideapad S205-10382JG",
515 .matches = {
516 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
517 DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
518 },
519 .driver_data = &quirk_lenovo_ideapad_s205,
520 },
521 {
522 .callback = dmi_matched,
523 .ident = "Lenovo Ideapad S205-1038DPG",
524 .matches = {
525 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
526 DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
527 },
528 .driver_data = &quirk_lenovo_ideapad_s205,
529 },
530 {}
531 };
532
533 static int __init
534 video_set_backlight_video_vendor(const struct dmi_system_id *d)
535 {
536 interface->capability &= ~ACER_CAP_BRIGHTNESS;
537 pr_info("Brightness must be controlled by generic video driver\n");
538 return 0;
539 }
540
541 static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
542 {
543 .callback = video_set_backlight_video_vendor,
544 .ident = "Acer TravelMate 4750",
545 .matches = {
546 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
547 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
548 },
549 },
550 {
551 .callback = video_set_backlight_video_vendor,
552 .ident = "Acer Extensa 5235",
553 .matches = {
554 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
555 DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
556 },
557 },
558 {
559 .callback = video_set_backlight_video_vendor,
560 .ident = "Acer TravelMate 5760",
561 .matches = {
562 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
563 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
564 },
565 },
566 {
567 .callback = video_set_backlight_video_vendor,
568 .ident = "Acer Aspire 5750",
569 .matches = {
570 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
571 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
572 },
573 },
574 {
575 .callback = video_set_backlight_video_vendor,
576 .ident = "Acer Aspire 5741",
577 .matches = {
578 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
579 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
580 },
581 },
582 {
583 /*
584 * Note no video_set_backlight_video_vendor, we must use the
585 * acer interface, as there is no native backlight interface.
586 */
587 .ident = "Acer KAV80",
588 .matches = {
589 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
590 DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
591 },
592 },
593 {}
594 };
595
596 /* Find which quirks are needed for a particular vendor/ model pair */
597 static void __init find_quirks(void)
598 {
599 if (!force_series) {
600 dmi_check_system(acer_quirks);
601 } else if (force_series == 2490) {
602 quirks = &quirk_acer_travelmate_2490;
603 }
604
605 if (quirks == NULL)
606 quirks = &quirk_unknown;
607
608 set_quirks();
609 }
610
611 /*
612 * General interface convenience methods
613 */
614
615 static bool has_cap(u32 cap)
616 {
617 if ((interface->capability & cap) != 0)
618 return 1;
619
620 return 0;
621 }
622
623 /*
624 * AMW0 (V1) interface
625 */
626 struct wmab_args {
627 u32 eax;
628 u32 ebx;
629 u32 ecx;
630 u32 edx;
631 };
632
633 struct wmab_ret {
634 u32 eax;
635 u32 ebx;
636 u32 ecx;
637 u32 edx;
638 u32 eex;
639 };
640
641 static acpi_status wmab_execute(struct wmab_args *regbuf,
642 struct acpi_buffer *result)
643 {
644 struct acpi_buffer input;
645 acpi_status status;
646 input.length = sizeof(struct wmab_args);
647 input.pointer = (u8 *)regbuf;
648
649 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
650
651 return status;
652 }
653
654 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
655 {
656 int err;
657 u8 result;
658
659 switch (cap) {
660 case ACER_CAP_MAILLED:
661 switch (quirks->mailled) {
662 default:
663 err = ec_read(0xA, &result);
664 if (err)
665 return AE_ERROR;
666 *value = (result >> 7) & 0x1;
667 return AE_OK;
668 }
669 break;
670 case ACER_CAP_WIRELESS:
671 switch (quirks->wireless) {
672 case 1:
673 err = ec_read(0x7B, &result);
674 if (err)
675 return AE_ERROR;
676 *value = result & 0x1;
677 return AE_OK;
678 case 2:
679 err = ec_read(0x71, &result);
680 if (err)
681 return AE_ERROR;
682 *value = result & 0x1;
683 return AE_OK;
684 case 3:
685 err = ec_read(0x78, &result);
686 if (err)
687 return AE_ERROR;
688 *value = result & 0x1;
689 return AE_OK;
690 default:
691 err = ec_read(0xA, &result);
692 if (err)
693 return AE_ERROR;
694 *value = (result >> 2) & 0x1;
695 return AE_OK;
696 }
697 break;
698 case ACER_CAP_BLUETOOTH:
699 switch (quirks->bluetooth) {
700 default:
701 err = ec_read(0xA, &result);
702 if (err)
703 return AE_ERROR;
704 *value = (result >> 4) & 0x1;
705 return AE_OK;
706 }
707 break;
708 case ACER_CAP_BRIGHTNESS:
709 switch (quirks->brightness) {
710 default:
711 err = ec_read(0x83, &result);
712 if (err)
713 return AE_ERROR;
714 *value = result;
715 return AE_OK;
716 }
717 break;
718 default:
719 return AE_ERROR;
720 }
721 return AE_OK;
722 }
723
724 static acpi_status AMW0_set_u32(u32 value, u32 cap)
725 {
726 struct wmab_args args;
727
728 args.eax = ACER_AMW0_WRITE;
729 args.ebx = value ? (1<<8) : 0;
730 args.ecx = args.edx = 0;
731
732 switch (cap) {
733 case ACER_CAP_MAILLED:
734 if (value > 1)
735 return AE_BAD_PARAMETER;
736 args.ebx |= ACER_AMW0_MAILLED_MASK;
737 break;
738 case ACER_CAP_WIRELESS:
739 if (value > 1)
740 return AE_BAD_PARAMETER;
741 args.ebx |= ACER_AMW0_WIRELESS_MASK;
742 break;
743 case ACER_CAP_BLUETOOTH:
744 if (value > 1)
745 return AE_BAD_PARAMETER;
746 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
747 break;
748 case ACER_CAP_BRIGHTNESS:
749 if (value > max_brightness)
750 return AE_BAD_PARAMETER;
751 switch (quirks->brightness) {
752 default:
753 return ec_write(0x83, value);
754 break;
755 }
756 default:
757 return AE_ERROR;
758 }
759
760 /* Actually do the set */
761 return wmab_execute(&args, NULL);
762 }
763
764 static acpi_status __init AMW0_find_mailled(void)
765 {
766 struct wmab_args args;
767 struct wmab_ret ret;
768 acpi_status status = AE_OK;
769 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
770 union acpi_object *obj;
771
772 args.eax = 0x86;
773 args.ebx = args.ecx = args.edx = 0;
774
775 status = wmab_execute(&args, &out);
776 if (ACPI_FAILURE(status))
777 return status;
778
779 obj = (union acpi_object *) out.pointer;
780 if (obj && obj->type == ACPI_TYPE_BUFFER &&
781 obj->buffer.length == sizeof(struct wmab_ret)) {
782 ret = *((struct wmab_ret *) obj->buffer.pointer);
783 } else {
784 kfree(out.pointer);
785 return AE_ERROR;
786 }
787
788 if (ret.eex & 0x1)
789 interface->capability |= ACER_CAP_MAILLED;
790
791 kfree(out.pointer);
792
793 return AE_OK;
794 }
795
796 static int AMW0_set_cap_acpi_check_device_found __initdata;
797
798 static acpi_status __init AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
799 u32 level, void *context, void **retval)
800 {
801 AMW0_set_cap_acpi_check_device_found = 1;
802 return AE_OK;
803 }
804
805 static const struct acpi_device_id norfkill_ids[] __initconst = {
806 { "VPC2004", 0},
807 { "IBM0068", 0},
808 { "LEN0068", 0},
809 { "SNY5001", 0}, /* sony-laptop in charge */
810 { "HPQ6601", 0},
811 { "", 0},
812 };
813
814 static int __init AMW0_set_cap_acpi_check_device(void)
815 {
816 const struct acpi_device_id *id;
817
818 for (id = norfkill_ids; id->id[0]; id++)
819 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
820 NULL, NULL);
821 return AMW0_set_cap_acpi_check_device_found;
822 }
823
824 static acpi_status __init AMW0_set_capabilities(void)
825 {
826 struct wmab_args args;
827 struct wmab_ret ret;
828 acpi_status status;
829 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
830 union acpi_object *obj;
831
832 /*
833 * On laptops with this strange GUID (non Acer), normal probing doesn't
834 * work.
835 */
836 if (wmi_has_guid(AMW0_GUID2)) {
837 if ((quirks != &quirk_unknown) ||
838 !AMW0_set_cap_acpi_check_device())
839 interface->capability |= ACER_CAP_WIRELESS;
840 return AE_OK;
841 }
842
843 args.eax = ACER_AMW0_WRITE;
844 args.ecx = args.edx = 0;
845
846 args.ebx = 0xa2 << 8;
847 args.ebx |= ACER_AMW0_WIRELESS_MASK;
848
849 status = wmab_execute(&args, &out);
850 if (ACPI_FAILURE(status))
851 return status;
852
853 obj = out.pointer;
854 if (obj && obj->type == ACPI_TYPE_BUFFER &&
855 obj->buffer.length == sizeof(struct wmab_ret)) {
856 ret = *((struct wmab_ret *) obj->buffer.pointer);
857 } else {
858 status = AE_ERROR;
859 goto out;
860 }
861
862 if (ret.eax & 0x1)
863 interface->capability |= ACER_CAP_WIRELESS;
864
865 args.ebx = 2 << 8;
866 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
867
868 /*
869 * It's ok to use existing buffer for next wmab_execute call.
870 * But we need to kfree(out.pointer) if next wmab_execute fail.
871 */
872 status = wmab_execute(&args, &out);
873 if (ACPI_FAILURE(status))
874 goto out;
875
876 obj = (union acpi_object *) out.pointer;
877 if (obj && obj->type == ACPI_TYPE_BUFFER
878 && obj->buffer.length == sizeof(struct wmab_ret)) {
879 ret = *((struct wmab_ret *) obj->buffer.pointer);
880 } else {
881 status = AE_ERROR;
882 goto out;
883 }
884
885 if (ret.eax & 0x1)
886 interface->capability |= ACER_CAP_BLUETOOTH;
887
888 /*
889 * This appears to be safe to enable, since all Wistron based laptops
890 * appear to use the same EC register for brightness, even if they
891 * differ for wireless, etc
892 */
893 if (quirks->brightness >= 0)
894 interface->capability |= ACER_CAP_BRIGHTNESS;
895
896 status = AE_OK;
897 out:
898 kfree(out.pointer);
899 return status;
900 }
901
902 static struct wmi_interface AMW0_interface = {
903 .type = ACER_AMW0,
904 };
905
906 static struct wmi_interface AMW0_V2_interface = {
907 .type = ACER_AMW0_V2,
908 };
909
910 /*
911 * New interface (The WMID interface)
912 */
913 static acpi_status
914 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
915 {
916 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
917 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
918 union acpi_object *obj;
919 u32 tmp = 0;
920 acpi_status status;
921
922 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
923
924 if (ACPI_FAILURE(status))
925 return status;
926
927 obj = (union acpi_object *) result.pointer;
928 if (obj) {
929 if (obj->type == ACPI_TYPE_BUFFER &&
930 (obj->buffer.length == sizeof(u32) ||
931 obj->buffer.length == sizeof(u64))) {
932 tmp = *((u32 *) obj->buffer.pointer);
933 } else if (obj->type == ACPI_TYPE_INTEGER) {
934 tmp = (u32) obj->integer.value;
935 }
936 }
937
938 if (out)
939 *out = tmp;
940
941 kfree(result.pointer);
942
943 return status;
944 }
945
946 static acpi_status WMID_get_u32(u32 *value, u32 cap)
947 {
948 acpi_status status;
949 u8 tmp;
950 u32 result, method_id = 0;
951
952 switch (cap) {
953 case ACER_CAP_WIRELESS:
954 method_id = ACER_WMID_GET_WIRELESS_METHODID;
955 break;
956 case ACER_CAP_BLUETOOTH:
957 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
958 break;
959 case ACER_CAP_BRIGHTNESS:
960 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
961 break;
962 case ACER_CAP_THREEG:
963 method_id = ACER_WMID_GET_THREEG_METHODID;
964 break;
965 case ACER_CAP_MAILLED:
966 if (quirks->mailled == 1) {
967 ec_read(0x9f, &tmp);
968 *value = tmp & 0x1;
969 return 0;
970 }
971 default:
972 return AE_ERROR;
973 }
974 status = WMI_execute_u32(method_id, 0, &result);
975
976 if (ACPI_SUCCESS(status))
977 *value = (u8)result;
978
979 return status;
980 }
981
982 static acpi_status WMID_set_u32(u32 value, u32 cap)
983 {
984 u32 method_id = 0;
985 char param;
986
987 switch (cap) {
988 case ACER_CAP_BRIGHTNESS:
989 if (value > max_brightness)
990 return AE_BAD_PARAMETER;
991 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
992 break;
993 case ACER_CAP_WIRELESS:
994 if (value > 1)
995 return AE_BAD_PARAMETER;
996 method_id = ACER_WMID_SET_WIRELESS_METHODID;
997 break;
998 case ACER_CAP_BLUETOOTH:
999 if (value > 1)
1000 return AE_BAD_PARAMETER;
1001 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
1002 break;
1003 case ACER_CAP_THREEG:
1004 if (value > 1)
1005 return AE_BAD_PARAMETER;
1006 method_id = ACER_WMID_SET_THREEG_METHODID;
1007 break;
1008 case ACER_CAP_MAILLED:
1009 if (value > 1)
1010 return AE_BAD_PARAMETER;
1011 if (quirks->mailled == 1) {
1012 param = value ? 0x92 : 0x93;
1013 i8042_lock_chip();
1014 i8042_command(&param, 0x1059);
1015 i8042_unlock_chip();
1016 return 0;
1017 }
1018 break;
1019 default:
1020 return AE_ERROR;
1021 }
1022 return WMI_execute_u32(method_id, (u32)value, NULL);
1023 }
1024
1025 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1026 {
1027 struct wmid3_gds_return_value return_value;
1028 acpi_status status;
1029 union acpi_object *obj;
1030 struct wmid3_gds_get_input_param params = {
1031 .function_num = 0x1,
1032 .hotkey_number = commun_fn_key_number,
1033 .devices = device,
1034 };
1035 struct acpi_buffer input = {
1036 sizeof(struct wmid3_gds_get_input_param),
1037 &params
1038 };
1039 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1040
1041 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1042 if (ACPI_FAILURE(status))
1043 return status;
1044
1045 obj = output.pointer;
1046
1047 if (!obj)
1048 return AE_ERROR;
1049 else if (obj->type != ACPI_TYPE_BUFFER) {
1050 kfree(obj);
1051 return AE_ERROR;
1052 }
1053 if (obj->buffer.length != 8) {
1054 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1055 kfree(obj);
1056 return AE_ERROR;
1057 }
1058
1059 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1060 kfree(obj);
1061
1062 if (return_value.error_code || return_value.ec_return_value)
1063 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1064 device,
1065 return_value.error_code,
1066 return_value.ec_return_value);
1067 else
1068 *value = !!(return_value.devices & device);
1069
1070 return status;
1071 }
1072
1073 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1074 {
1075 u16 device;
1076
1077 switch (cap) {
1078 case ACER_CAP_WIRELESS:
1079 device = ACER_WMID3_GDS_WIRELESS;
1080 break;
1081 case ACER_CAP_BLUETOOTH:
1082 device = ACER_WMID3_GDS_BLUETOOTH;
1083 break;
1084 case ACER_CAP_THREEG:
1085 device = ACER_WMID3_GDS_THREEG;
1086 break;
1087 default:
1088 return AE_ERROR;
1089 }
1090 return wmid3_get_device_status(value, device);
1091 }
1092
1093 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1094 {
1095 struct wmid3_gds_return_value return_value;
1096 acpi_status status;
1097 union acpi_object *obj;
1098 u16 devices;
1099 struct wmid3_gds_get_input_param get_params = {
1100 .function_num = 0x1,
1101 .hotkey_number = commun_fn_key_number,
1102 .devices = commun_func_bitmap,
1103 };
1104 struct acpi_buffer get_input = {
1105 sizeof(struct wmid3_gds_get_input_param),
1106 &get_params
1107 };
1108 struct wmid3_gds_set_input_param set_params = {
1109 .function_num = 0x2,
1110 .hotkey_number = commun_fn_key_number,
1111 .devices = commun_func_bitmap,
1112 };
1113 struct acpi_buffer set_input = {
1114 sizeof(struct wmid3_gds_set_input_param),
1115 &set_params
1116 };
1117 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1118 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1119
1120 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1121 if (ACPI_FAILURE(status))
1122 return status;
1123
1124 obj = output.pointer;
1125
1126 if (!obj)
1127 return AE_ERROR;
1128 else if (obj->type != ACPI_TYPE_BUFFER) {
1129 kfree(obj);
1130 return AE_ERROR;
1131 }
1132 if (obj->buffer.length != 8) {
1133 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1134 kfree(obj);
1135 return AE_ERROR;
1136 }
1137
1138 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1139 kfree(obj);
1140
1141 if (return_value.error_code || return_value.ec_return_value) {
1142 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1143 return_value.error_code,
1144 return_value.ec_return_value);
1145 return status;
1146 }
1147
1148 devices = return_value.devices;
1149 set_params.devices = (value) ? (devices | device) : (devices & ~device);
1150
1151 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1152 if (ACPI_FAILURE(status))
1153 return status;
1154
1155 obj = output2.pointer;
1156
1157 if (!obj)
1158 return AE_ERROR;
1159 else if (obj->type != ACPI_TYPE_BUFFER) {
1160 kfree(obj);
1161 return AE_ERROR;
1162 }
1163 if (obj->buffer.length != 4) {
1164 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1165 kfree(obj);
1166 return AE_ERROR;
1167 }
1168
1169 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1170 kfree(obj);
1171
1172 if (return_value.error_code || return_value.ec_return_value)
1173 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1174 return_value.error_code,
1175 return_value.ec_return_value);
1176
1177 return status;
1178 }
1179
1180 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1181 {
1182 u16 device;
1183
1184 switch (cap) {
1185 case ACER_CAP_WIRELESS:
1186 device = ACER_WMID3_GDS_WIRELESS;
1187 break;
1188 case ACER_CAP_BLUETOOTH:
1189 device = ACER_WMID3_GDS_BLUETOOTH;
1190 break;
1191 case ACER_CAP_THREEG:
1192 device = ACER_WMID3_GDS_THREEG;
1193 break;
1194 default:
1195 return AE_ERROR;
1196 }
1197 return wmid3_set_device_status(value, device);
1198 }
1199
1200 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1201 {
1202 struct hotkey_function_type_aa *type_aa;
1203
1204 /* We are looking for OEM-specific Type AAh */
1205 if (header->type != 0xAA)
1206 return;
1207
1208 has_type_aa = true;
1209 type_aa = (struct hotkey_function_type_aa *) header;
1210
1211 pr_info("Function bitmap for Communication Button: 0x%x\n",
1212 type_aa->commun_func_bitmap);
1213 commun_func_bitmap = type_aa->commun_func_bitmap;
1214
1215 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1216 interface->capability |= ACER_CAP_WIRELESS;
1217 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1218 interface->capability |= ACER_CAP_THREEG;
1219 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1220 interface->capability |= ACER_CAP_BLUETOOTH;
1221
1222 commun_fn_key_number = type_aa->commun_fn_key_number;
1223 }
1224
1225 static acpi_status __init WMID_set_capabilities(void)
1226 {
1227 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1228 union acpi_object *obj;
1229 acpi_status status;
1230 u32 devices;
1231
1232 status = wmi_query_block(WMID_GUID2, 1, &out);
1233 if (ACPI_FAILURE(status))
1234 return status;
1235
1236 obj = (union acpi_object *) out.pointer;
1237 if (obj) {
1238 if (obj->type == ACPI_TYPE_BUFFER &&
1239 (obj->buffer.length == sizeof(u32) ||
1240 obj->buffer.length == sizeof(u64))) {
1241 devices = *((u32 *) obj->buffer.pointer);
1242 } else if (obj->type == ACPI_TYPE_INTEGER) {
1243 devices = (u32) obj->integer.value;
1244 } else {
1245 kfree(out.pointer);
1246 return AE_ERROR;
1247 }
1248 } else {
1249 kfree(out.pointer);
1250 return AE_ERROR;
1251 }
1252
1253 pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1254 if (devices & 0x07)
1255 interface->capability |= ACER_CAP_WIRELESS;
1256 if (devices & 0x40)
1257 interface->capability |= ACER_CAP_THREEG;
1258 if (devices & 0x10)
1259 interface->capability |= ACER_CAP_BLUETOOTH;
1260
1261 if (!(devices & 0x20))
1262 max_brightness = 0x9;
1263
1264 kfree(out.pointer);
1265 return status;
1266 }
1267
1268 static struct wmi_interface wmid_interface = {
1269 .type = ACER_WMID,
1270 };
1271
1272 static struct wmi_interface wmid_v2_interface = {
1273 .type = ACER_WMID_v2,
1274 };
1275
1276 /*
1277 * Generic Device (interface-independent)
1278 */
1279
1280 static acpi_status get_u32(u32 *value, u32 cap)
1281 {
1282 acpi_status status = AE_ERROR;
1283
1284 switch (interface->type) {
1285 case ACER_AMW0:
1286 status = AMW0_get_u32(value, cap);
1287 break;
1288 case ACER_AMW0_V2:
1289 if (cap == ACER_CAP_MAILLED) {
1290 status = AMW0_get_u32(value, cap);
1291 break;
1292 }
1293 case ACER_WMID:
1294 status = WMID_get_u32(value, cap);
1295 break;
1296 case ACER_WMID_v2:
1297 if (cap & (ACER_CAP_WIRELESS |
1298 ACER_CAP_BLUETOOTH |
1299 ACER_CAP_THREEG))
1300 status = wmid_v2_get_u32(value, cap);
1301 else if (wmi_has_guid(WMID_GUID2))
1302 status = WMID_get_u32(value, cap);
1303 break;
1304 }
1305
1306 return status;
1307 }
1308
1309 static acpi_status set_u32(u32 value, u32 cap)
1310 {
1311 acpi_status status;
1312
1313 if (interface->capability & cap) {
1314 switch (interface->type) {
1315 case ACER_AMW0:
1316 return AMW0_set_u32(value, cap);
1317 case ACER_AMW0_V2:
1318 if (cap == ACER_CAP_MAILLED)
1319 return AMW0_set_u32(value, cap);
1320
1321 /*
1322 * On some models, some WMID methods don't toggle
1323 * properly. For those cases, we want to run the AMW0
1324 * method afterwards to be certain we've really toggled
1325 * the device state.
1326 */
1327 if (cap == ACER_CAP_WIRELESS ||
1328 cap == ACER_CAP_BLUETOOTH) {
1329 status = WMID_set_u32(value, cap);
1330 if (ACPI_FAILURE(status))
1331 return status;
1332
1333 return AMW0_set_u32(value, cap);
1334 }
1335 case ACER_WMID:
1336 return WMID_set_u32(value, cap);
1337 case ACER_WMID_v2:
1338 if (cap & (ACER_CAP_WIRELESS |
1339 ACER_CAP_BLUETOOTH |
1340 ACER_CAP_THREEG))
1341 return wmid_v2_set_u32(value, cap);
1342 else if (wmi_has_guid(WMID_GUID2))
1343 return WMID_set_u32(value, cap);
1344 default:
1345 return AE_BAD_PARAMETER;
1346 }
1347 }
1348 return AE_BAD_PARAMETER;
1349 }
1350
1351 static void __init acer_commandline_init(void)
1352 {
1353 /*
1354 * These will all fail silently if the value given is invalid, or the
1355 * capability isn't available on the given interface
1356 */
1357 if (mailled >= 0)
1358 set_u32(mailled, ACER_CAP_MAILLED);
1359 if (!has_type_aa && threeg >= 0)
1360 set_u32(threeg, ACER_CAP_THREEG);
1361 if (brightness >= 0)
1362 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1363 }
1364
1365 /*
1366 * LED device (Mail LED only, no other LEDs known yet)
1367 */
1368 static void mail_led_set(struct led_classdev *led_cdev,
1369 enum led_brightness value)
1370 {
1371 set_u32(value, ACER_CAP_MAILLED);
1372 }
1373
1374 static struct led_classdev mail_led = {
1375 .name = "acer-wmi::mail",
1376 .brightness_set = mail_led_set,
1377 };
1378
1379 static int acer_led_init(struct device *dev)
1380 {
1381 return led_classdev_register(dev, &mail_led);
1382 }
1383
1384 static void acer_led_exit(void)
1385 {
1386 set_u32(LED_OFF, ACER_CAP_MAILLED);
1387 led_classdev_unregister(&mail_led);
1388 }
1389
1390 /*
1391 * Backlight device
1392 */
1393 static struct backlight_device *acer_backlight_device;
1394
1395 static int read_brightness(struct backlight_device *bd)
1396 {
1397 u32 value;
1398 get_u32(&value, ACER_CAP_BRIGHTNESS);
1399 return value;
1400 }
1401
1402 static int update_bl_status(struct backlight_device *bd)
1403 {
1404 int intensity = bd->props.brightness;
1405
1406 if (bd->props.power != FB_BLANK_UNBLANK)
1407 intensity = 0;
1408 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1409 intensity = 0;
1410
1411 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1412
1413 return 0;
1414 }
1415
1416 static const struct backlight_ops acer_bl_ops = {
1417 .get_brightness = read_brightness,
1418 .update_status = update_bl_status,
1419 };
1420
1421 static int acer_backlight_init(struct device *dev)
1422 {
1423 struct backlight_properties props;
1424 struct backlight_device *bd;
1425
1426 memset(&props, 0, sizeof(struct backlight_properties));
1427 props.type = BACKLIGHT_PLATFORM;
1428 props.max_brightness = max_brightness;
1429 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1430 &props);
1431 if (IS_ERR(bd)) {
1432 pr_err("Could not register Acer backlight device\n");
1433 acer_backlight_device = NULL;
1434 return PTR_ERR(bd);
1435 }
1436
1437 acer_backlight_device = bd;
1438
1439 bd->props.power = FB_BLANK_UNBLANK;
1440 bd->props.brightness = read_brightness(bd);
1441 backlight_update_status(bd);
1442 return 0;
1443 }
1444
1445 static void acer_backlight_exit(void)
1446 {
1447 backlight_device_unregister(acer_backlight_device);
1448 }
1449
1450 /*
1451 * Accelerometer device
1452 */
1453 static acpi_handle gsensor_handle;
1454
1455 static int acer_gsensor_init(void)
1456 {
1457 acpi_status status;
1458 struct acpi_buffer output;
1459 union acpi_object out_obj;
1460
1461 output.length = sizeof(out_obj);
1462 output.pointer = &out_obj;
1463 status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1464 if (ACPI_FAILURE(status))
1465 return -1;
1466
1467 return 0;
1468 }
1469
1470 static int acer_gsensor_open(struct input_dev *input)
1471 {
1472 return acer_gsensor_init();
1473 }
1474
1475 static int acer_gsensor_event(void)
1476 {
1477 acpi_status status;
1478 struct acpi_buffer output;
1479 union acpi_object out_obj[5];
1480
1481 if (!has_cap(ACER_CAP_ACCEL))
1482 return -1;
1483
1484 output.length = sizeof(out_obj);
1485 output.pointer = out_obj;
1486
1487 status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1488 if (ACPI_FAILURE(status))
1489 return -1;
1490
1491 if (out_obj->package.count != 4)
1492 return -1;
1493
1494 input_report_abs(acer_wmi_accel_dev, ABS_X,
1495 (s16)out_obj->package.elements[0].integer.value);
1496 input_report_abs(acer_wmi_accel_dev, ABS_Y,
1497 (s16)out_obj->package.elements[1].integer.value);
1498 input_report_abs(acer_wmi_accel_dev, ABS_Z,
1499 (s16)out_obj->package.elements[2].integer.value);
1500 input_sync(acer_wmi_accel_dev);
1501 return 0;
1502 }
1503
1504 /*
1505 * Rfkill devices
1506 */
1507 static void acer_rfkill_update(struct work_struct *ignored);
1508 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1509 static void acer_rfkill_update(struct work_struct *ignored)
1510 {
1511 u32 state;
1512 acpi_status status;
1513
1514 if (has_cap(ACER_CAP_WIRELESS)) {
1515 status = get_u32(&state, ACER_CAP_WIRELESS);
1516 if (ACPI_SUCCESS(status)) {
1517 if (quirks->wireless == 3)
1518 rfkill_set_hw_state(wireless_rfkill, !state);
1519 else
1520 rfkill_set_sw_state(wireless_rfkill, !state);
1521 }
1522 }
1523
1524 if (has_cap(ACER_CAP_BLUETOOTH)) {
1525 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1526 if (ACPI_SUCCESS(status))
1527 rfkill_set_sw_state(bluetooth_rfkill, !state);
1528 }
1529
1530 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1531 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1532 if (ACPI_SUCCESS(status))
1533 rfkill_set_sw_state(threeg_rfkill, !state);
1534 }
1535
1536 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1537 }
1538
1539 static int acer_rfkill_set(void *data, bool blocked)
1540 {
1541 acpi_status status;
1542 u32 cap = (unsigned long)data;
1543
1544 if (rfkill_inited) {
1545 status = set_u32(!blocked, cap);
1546 if (ACPI_FAILURE(status))
1547 return -ENODEV;
1548 }
1549
1550 return 0;
1551 }
1552
1553 static const struct rfkill_ops acer_rfkill_ops = {
1554 .set_block = acer_rfkill_set,
1555 };
1556
1557 static struct rfkill *acer_rfkill_register(struct device *dev,
1558 enum rfkill_type type,
1559 char *name, u32 cap)
1560 {
1561 int err;
1562 struct rfkill *rfkill_dev;
1563 u32 state;
1564 acpi_status status;
1565
1566 rfkill_dev = rfkill_alloc(name, dev, type,
1567 &acer_rfkill_ops,
1568 (void *)(unsigned long)cap);
1569 if (!rfkill_dev)
1570 return ERR_PTR(-ENOMEM);
1571
1572 status = get_u32(&state, cap);
1573
1574 err = rfkill_register(rfkill_dev);
1575 if (err) {
1576 rfkill_destroy(rfkill_dev);
1577 return ERR_PTR(err);
1578 }
1579
1580 if (ACPI_SUCCESS(status))
1581 rfkill_set_sw_state(rfkill_dev, !state);
1582
1583 return rfkill_dev;
1584 }
1585
1586 static int acer_rfkill_init(struct device *dev)
1587 {
1588 int err;
1589
1590 if (has_cap(ACER_CAP_WIRELESS)) {
1591 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1592 "acer-wireless", ACER_CAP_WIRELESS);
1593 if (IS_ERR(wireless_rfkill)) {
1594 err = PTR_ERR(wireless_rfkill);
1595 goto error_wireless;
1596 }
1597 }
1598
1599 if (has_cap(ACER_CAP_BLUETOOTH)) {
1600 bluetooth_rfkill = acer_rfkill_register(dev,
1601 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1602 ACER_CAP_BLUETOOTH);
1603 if (IS_ERR(bluetooth_rfkill)) {
1604 err = PTR_ERR(bluetooth_rfkill);
1605 goto error_bluetooth;
1606 }
1607 }
1608
1609 if (has_cap(ACER_CAP_THREEG)) {
1610 threeg_rfkill = acer_rfkill_register(dev,
1611 RFKILL_TYPE_WWAN, "acer-threeg",
1612 ACER_CAP_THREEG);
1613 if (IS_ERR(threeg_rfkill)) {
1614 err = PTR_ERR(threeg_rfkill);
1615 goto error_threeg;
1616 }
1617 }
1618
1619 rfkill_inited = true;
1620
1621 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1622 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1623 schedule_delayed_work(&acer_rfkill_work,
1624 round_jiffies_relative(HZ));
1625
1626 return 0;
1627
1628 error_threeg:
1629 if (has_cap(ACER_CAP_BLUETOOTH)) {
1630 rfkill_unregister(bluetooth_rfkill);
1631 rfkill_destroy(bluetooth_rfkill);
1632 }
1633 error_bluetooth:
1634 if (has_cap(ACER_CAP_WIRELESS)) {
1635 rfkill_unregister(wireless_rfkill);
1636 rfkill_destroy(wireless_rfkill);
1637 }
1638 error_wireless:
1639 return err;
1640 }
1641
1642 static void acer_rfkill_exit(void)
1643 {
1644 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1645 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1646 cancel_delayed_work_sync(&acer_rfkill_work);
1647
1648 if (has_cap(ACER_CAP_WIRELESS)) {
1649 rfkill_unregister(wireless_rfkill);
1650 rfkill_destroy(wireless_rfkill);
1651 }
1652
1653 if (has_cap(ACER_CAP_BLUETOOTH)) {
1654 rfkill_unregister(bluetooth_rfkill);
1655 rfkill_destroy(bluetooth_rfkill);
1656 }
1657
1658 if (has_cap(ACER_CAP_THREEG)) {
1659 rfkill_unregister(threeg_rfkill);
1660 rfkill_destroy(threeg_rfkill);
1661 }
1662 return;
1663 }
1664
1665 static void acer_wmi_notify(u32 value, void *context)
1666 {
1667 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1668 union acpi_object *obj;
1669 struct event_return_value return_value;
1670 acpi_status status;
1671 u16 device_state;
1672 const struct key_entry *key;
1673 u32 scancode;
1674
1675 status = wmi_get_event_data(value, &response);
1676 if (status != AE_OK) {
1677 pr_warn("bad event status 0x%x\n", status);
1678 return;
1679 }
1680
1681 obj = (union acpi_object *)response.pointer;
1682
1683 if (!obj)
1684 return;
1685 if (obj->type != ACPI_TYPE_BUFFER) {
1686 pr_warn("Unknown response received %d\n", obj->type);
1687 kfree(obj);
1688 return;
1689 }
1690 if (obj->buffer.length != 8) {
1691 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1692 kfree(obj);
1693 return;
1694 }
1695
1696 return_value = *((struct event_return_value *)obj->buffer.pointer);
1697 kfree(obj);
1698
1699 switch (return_value.function) {
1700 case WMID_HOTKEY_EVENT:
1701 device_state = return_value.device_state;
1702 pr_debug("device state: 0x%x\n", device_state);
1703
1704 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1705 return_value.key_num);
1706 if (!key) {
1707 pr_warn("Unknown key number - 0x%x\n",
1708 return_value.key_num);
1709 } else {
1710 scancode = return_value.key_num;
1711 switch (key->keycode) {
1712 case KEY_WLAN:
1713 case KEY_BLUETOOTH:
1714 if (has_cap(ACER_CAP_WIRELESS))
1715 rfkill_set_sw_state(wireless_rfkill,
1716 !(device_state & ACER_WMID3_GDS_WIRELESS));
1717 if (has_cap(ACER_CAP_THREEG))
1718 rfkill_set_sw_state(threeg_rfkill,
1719 !(device_state & ACER_WMID3_GDS_THREEG));
1720 if (has_cap(ACER_CAP_BLUETOOTH))
1721 rfkill_set_sw_state(bluetooth_rfkill,
1722 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1723 break;
1724 case KEY_TOUCHPAD_TOGGLE:
1725 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1726 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1727 }
1728 sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1729 }
1730 break;
1731 case WMID_ACCEL_EVENT:
1732 acer_gsensor_event();
1733 break;
1734 default:
1735 pr_warn("Unknown function number - %d - %d\n",
1736 return_value.function, return_value.key_num);
1737 break;
1738 }
1739 }
1740
1741 static acpi_status __init
1742 wmid3_set_lm_mode(struct lm_input_params *params,
1743 struct lm_return_value *return_value)
1744 {
1745 acpi_status status;
1746 union acpi_object *obj;
1747
1748 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1749 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1750
1751 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1752 if (ACPI_FAILURE(status))
1753 return status;
1754
1755 obj = output.pointer;
1756
1757 if (!obj)
1758 return AE_ERROR;
1759 else if (obj->type != ACPI_TYPE_BUFFER) {
1760 kfree(obj);
1761 return AE_ERROR;
1762 }
1763 if (obj->buffer.length != 4) {
1764 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1765 kfree(obj);
1766 return AE_ERROR;
1767 }
1768
1769 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1770 kfree(obj);
1771
1772 return status;
1773 }
1774
1775 static int __init acer_wmi_enable_ec_raw(void)
1776 {
1777 struct lm_return_value return_value;
1778 acpi_status status;
1779 struct lm_input_params params = {
1780 .function_num = 0x1,
1781 .commun_devices = 0xFFFF,
1782 .devices = 0xFFFF,
1783 .lm_status = 0x00, /* Launch Manager Deactive */
1784 };
1785
1786 status = wmid3_set_lm_mode(&params, &return_value);
1787
1788 if (return_value.error_code || return_value.ec_return_value)
1789 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1790 return_value.error_code,
1791 return_value.ec_return_value);
1792 else
1793 pr_info("Enabled EC raw mode\n");
1794
1795 return status;
1796 }
1797
1798 static int __init acer_wmi_enable_lm(void)
1799 {
1800 struct lm_return_value return_value;
1801 acpi_status status;
1802 struct lm_input_params params = {
1803 .function_num = 0x1,
1804 .commun_devices = 0xFFFF,
1805 .devices = 0xFFFF,
1806 .lm_status = 0x01, /* Launch Manager Active */
1807 };
1808
1809 status = wmid3_set_lm_mode(&params, &return_value);
1810
1811 if (return_value.error_code || return_value.ec_return_value)
1812 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1813 return_value.error_code,
1814 return_value.ec_return_value);
1815
1816 return status;
1817 }
1818
1819 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1820 void *ctx, void **retval)
1821 {
1822 *(acpi_handle *)retval = ah;
1823 return AE_OK;
1824 }
1825
1826 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1827 acpi_handle *ah)
1828 {
1829 acpi_status status;
1830 acpi_handle handle;
1831
1832 BUG_ON(!name || !ah);
1833
1834 handle = NULL;
1835 status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1836 (void *)name, &handle);
1837
1838 if (ACPI_SUCCESS(status)) {
1839 *ah = handle;
1840 return 0;
1841 } else {
1842 return -ENODEV;
1843 }
1844 }
1845
1846 static int __init acer_wmi_accel_setup(void)
1847 {
1848 int err;
1849
1850 err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1851 if (err)
1852 return err;
1853
1854 interface->capability |= ACER_CAP_ACCEL;
1855
1856 acer_wmi_accel_dev = input_allocate_device();
1857 if (!acer_wmi_accel_dev)
1858 return -ENOMEM;
1859
1860 acer_wmi_accel_dev->open = acer_gsensor_open;
1861
1862 acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1863 acer_wmi_accel_dev->phys = "wmi/input1";
1864 acer_wmi_accel_dev->id.bustype = BUS_HOST;
1865 acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1866 input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1867 input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1868 input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1869
1870 err = input_register_device(acer_wmi_accel_dev);
1871 if (err)
1872 goto err_free_dev;
1873
1874 return 0;
1875
1876 err_free_dev:
1877 input_free_device(acer_wmi_accel_dev);
1878 return err;
1879 }
1880
1881 static void acer_wmi_accel_destroy(void)
1882 {
1883 input_unregister_device(acer_wmi_accel_dev);
1884 }
1885
1886 static int __init acer_wmi_input_setup(void)
1887 {
1888 acpi_status status;
1889 int err;
1890
1891 acer_wmi_input_dev = input_allocate_device();
1892 if (!acer_wmi_input_dev)
1893 return -ENOMEM;
1894
1895 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1896 acer_wmi_input_dev->phys = "wmi/input0";
1897 acer_wmi_input_dev->id.bustype = BUS_HOST;
1898
1899 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1900 if (err)
1901 goto err_free_dev;
1902
1903 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1904 acer_wmi_notify, NULL);
1905 if (ACPI_FAILURE(status)) {
1906 err = -EIO;
1907 goto err_free_keymap;
1908 }
1909
1910 err = input_register_device(acer_wmi_input_dev);
1911 if (err)
1912 goto err_uninstall_notifier;
1913
1914 return 0;
1915
1916 err_uninstall_notifier:
1917 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1918 err_free_keymap:
1919 sparse_keymap_free(acer_wmi_input_dev);
1920 err_free_dev:
1921 input_free_device(acer_wmi_input_dev);
1922 return err;
1923 }
1924
1925 static void acer_wmi_input_destroy(void)
1926 {
1927 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1928 sparse_keymap_free(acer_wmi_input_dev);
1929 input_unregister_device(acer_wmi_input_dev);
1930 }
1931
1932 /*
1933 * debugfs functions
1934 */
1935 static u32 get_wmid_devices(void)
1936 {
1937 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1938 union acpi_object *obj;
1939 acpi_status status;
1940 u32 devices = 0;
1941
1942 status = wmi_query_block(WMID_GUID2, 1, &out);
1943 if (ACPI_FAILURE(status))
1944 return 0;
1945
1946 obj = (union acpi_object *) out.pointer;
1947 if (obj) {
1948 if (obj->type == ACPI_TYPE_BUFFER &&
1949 (obj->buffer.length == sizeof(u32) ||
1950 obj->buffer.length == sizeof(u64))) {
1951 devices = *((u32 *) obj->buffer.pointer);
1952 } else if (obj->type == ACPI_TYPE_INTEGER) {
1953 devices = (u32) obj->integer.value;
1954 }
1955 }
1956
1957 kfree(out.pointer);
1958 return devices;
1959 }
1960
1961 /*
1962 * Platform device
1963 */
1964 static int acer_platform_probe(struct platform_device *device)
1965 {
1966 int err;
1967
1968 if (has_cap(ACER_CAP_MAILLED)) {
1969 err = acer_led_init(&device->dev);
1970 if (err)
1971 goto error_mailled;
1972 }
1973
1974 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1975 err = acer_backlight_init(&device->dev);
1976 if (err)
1977 goto error_brightness;
1978 }
1979
1980 err = acer_rfkill_init(&device->dev);
1981 if (err)
1982 goto error_rfkill;
1983
1984 return err;
1985
1986 error_rfkill:
1987 if (has_cap(ACER_CAP_BRIGHTNESS))
1988 acer_backlight_exit();
1989 error_brightness:
1990 if (has_cap(ACER_CAP_MAILLED))
1991 acer_led_exit();
1992 error_mailled:
1993 return err;
1994 }
1995
1996 static int acer_platform_remove(struct platform_device *device)
1997 {
1998 if (has_cap(ACER_CAP_MAILLED))
1999 acer_led_exit();
2000 if (has_cap(ACER_CAP_BRIGHTNESS))
2001 acer_backlight_exit();
2002
2003 acer_rfkill_exit();
2004 return 0;
2005 }
2006
2007 #ifdef CONFIG_PM_SLEEP
2008 static int acer_suspend(struct device *dev)
2009 {
2010 u32 value;
2011 struct acer_data *data = &interface->data;
2012
2013 if (!data)
2014 return -ENOMEM;
2015
2016 if (has_cap(ACER_CAP_MAILLED)) {
2017 get_u32(&value, ACER_CAP_MAILLED);
2018 set_u32(LED_OFF, ACER_CAP_MAILLED);
2019 data->mailled = value;
2020 }
2021
2022 if (has_cap(ACER_CAP_BRIGHTNESS)) {
2023 get_u32(&value, ACER_CAP_BRIGHTNESS);
2024 data->brightness = value;
2025 }
2026
2027 return 0;
2028 }
2029
2030 static int acer_resume(struct device *dev)
2031 {
2032 struct acer_data *data = &interface->data;
2033
2034 if (!data)
2035 return -ENOMEM;
2036
2037 if (has_cap(ACER_CAP_MAILLED))
2038 set_u32(data->mailled, ACER_CAP_MAILLED);
2039
2040 if (has_cap(ACER_CAP_BRIGHTNESS))
2041 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2042
2043 if (has_cap(ACER_CAP_ACCEL))
2044 acer_gsensor_init();
2045
2046 return 0;
2047 }
2048 #else
2049 #define acer_suspend NULL
2050 #define acer_resume NULL
2051 #endif
2052
2053 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2054
2055 static void acer_platform_shutdown(struct platform_device *device)
2056 {
2057 struct acer_data *data = &interface->data;
2058
2059 if (!data)
2060 return;
2061
2062 if (has_cap(ACER_CAP_MAILLED))
2063 set_u32(LED_OFF, ACER_CAP_MAILLED);
2064 }
2065
2066 static struct platform_driver acer_platform_driver = {
2067 .driver = {
2068 .name = "acer-wmi",
2069 .pm = &acer_pm,
2070 },
2071 .probe = acer_platform_probe,
2072 .remove = acer_platform_remove,
2073 .shutdown = acer_platform_shutdown,
2074 };
2075
2076 static struct platform_device *acer_platform_device;
2077
2078 static void remove_debugfs(void)
2079 {
2080 debugfs_remove(interface->debug.devices);
2081 debugfs_remove(interface->debug.root);
2082 }
2083
2084 static int __init create_debugfs(void)
2085 {
2086 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2087 if (!interface->debug.root) {
2088 pr_err("Failed to create debugfs directory");
2089 return -ENOMEM;
2090 }
2091
2092 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2093 interface->debug.root,
2094 &interface->debug.wmid_devices);
2095 if (!interface->debug.devices)
2096 goto error_debugfs;
2097
2098 return 0;
2099
2100 error_debugfs:
2101 remove_debugfs();
2102 return -ENOMEM;
2103 }
2104
2105 static int __init acer_wmi_init(void)
2106 {
2107 int err;
2108
2109 pr_info("Acer Laptop ACPI-WMI Extras\n");
2110
2111 if (dmi_check_system(acer_blacklist)) {
2112 pr_info("Blacklisted hardware detected - not loading\n");
2113 return -ENODEV;
2114 }
2115
2116 find_quirks();
2117
2118 /*
2119 * Detect which ACPI-WMI interface we're using.
2120 */
2121 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2122 interface = &AMW0_V2_interface;
2123
2124 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2125 interface = &wmid_interface;
2126
2127 if (wmi_has_guid(WMID_GUID3))
2128 interface = &wmid_v2_interface;
2129
2130 if (interface)
2131 dmi_walk(type_aa_dmi_decode, NULL);
2132
2133 if (wmi_has_guid(WMID_GUID2) && interface) {
2134 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2135 pr_err("Unable to detect available WMID devices\n");
2136 return -ENODEV;
2137 }
2138 /* WMID always provides brightness methods */
2139 interface->capability |= ACER_CAP_BRIGHTNESS;
2140 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2141 pr_err("No WMID device detection method found\n");
2142 return -ENODEV;
2143 }
2144
2145 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2146 interface = &AMW0_interface;
2147
2148 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2149 pr_err("Unable to detect available AMW0 devices\n");
2150 return -ENODEV;
2151 }
2152 }
2153
2154 if (wmi_has_guid(AMW0_GUID1))
2155 AMW0_find_mailled();
2156
2157 if (!interface) {
2158 pr_err("No or unsupported WMI interface, unable to load\n");
2159 return -ENODEV;
2160 }
2161
2162 set_quirks();
2163
2164 if (dmi_check_system(video_vendor_dmi_table))
2165 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2166
2167 if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2168 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2169
2170 if (wmi_has_guid(WMID_GUID3)) {
2171 if (ec_raw_mode) {
2172 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2173 pr_err("Cannot enable EC raw mode\n");
2174 return -ENODEV;
2175 }
2176 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2177 pr_err("Cannot enable Launch Manager mode\n");
2178 return -ENODEV;
2179 }
2180 } else if (ec_raw_mode) {
2181 pr_info("No WMID EC raw mode enable method\n");
2182 }
2183
2184 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2185 err = acer_wmi_input_setup();
2186 if (err)
2187 return err;
2188 }
2189
2190 acer_wmi_accel_setup();
2191
2192 err = platform_driver_register(&acer_platform_driver);
2193 if (err) {
2194 pr_err("Unable to register platform driver\n");
2195 goto error_platform_register;
2196 }
2197
2198 acer_platform_device = platform_device_alloc("acer-wmi", -1);
2199 if (!acer_platform_device) {
2200 err = -ENOMEM;
2201 goto error_device_alloc;
2202 }
2203
2204 err = platform_device_add(acer_platform_device);
2205 if (err)
2206 goto error_device_add;
2207
2208 if (wmi_has_guid(WMID_GUID2)) {
2209 interface->debug.wmid_devices = get_wmid_devices();
2210 err = create_debugfs();
2211 if (err)
2212 goto error_create_debugfs;
2213 }
2214
2215 /* Override any initial settings with values from the commandline */
2216 acer_commandline_init();
2217
2218 return 0;
2219
2220 error_create_debugfs:
2221 platform_device_del(acer_platform_device);
2222 error_device_add:
2223 platform_device_put(acer_platform_device);
2224 error_device_alloc:
2225 platform_driver_unregister(&acer_platform_driver);
2226 error_platform_register:
2227 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2228 acer_wmi_input_destroy();
2229 if (has_cap(ACER_CAP_ACCEL))
2230 acer_wmi_accel_destroy();
2231
2232 return err;
2233 }
2234
2235 static void __exit acer_wmi_exit(void)
2236 {
2237 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2238 acer_wmi_input_destroy();
2239
2240 if (has_cap(ACER_CAP_ACCEL))
2241 acer_wmi_accel_destroy();
2242
2243 remove_debugfs();
2244 platform_device_unregister(acer_platform_device);
2245 platform_driver_unregister(&acer_platform_driver);
2246
2247 pr_info("Acer Laptop WMI Extras unloaded\n");
2248 return;
2249 }
2250
2251 module_init(acer_wmi_init);
2252 module_exit(acer_wmi_exit);
Linux kernel - Deliverables
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