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pinctrl: move generic functions to the pinctrl_ namespace
[linux/fpc-iii.git] / drivers / platform / x86 / acer-wmi.c
blobb848277171a4e74cbd373338fe1a3425381e3cf7
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
47 MODULE_AUTHOR("Carlos Corbacho");
48 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
49 MODULE_LICENSE("GPL");
50
51 /*
52 * Magic Number
53 * Meaning is unknown - this number is required for writing to ACPI for AMW0
54 * (it's also used in acerhk when directly accessing the BIOS)
55 */
56 #define ACER_AMW0_WRITE 0x9610
57
58 /*
59 * Bit masks for the AMW0 interface
60 */
61 #define ACER_AMW0_WIRELESS_MASK 0x35
62 #define ACER_AMW0_BLUETOOTH_MASK 0x34
63 #define ACER_AMW0_MAILLED_MASK 0x31
64
65 /*
66 * Method IDs for WMID interface
67 */
68 #define ACER_WMID_GET_WIRELESS_METHODID 1
69 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
70 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
71 #define ACER_WMID_SET_WIRELESS_METHODID 4
72 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
73 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
74 #define ACER_WMID_GET_THREEG_METHODID 10
75 #define ACER_WMID_SET_THREEG_METHODID 11
76
77 /*
78 * Acer ACPI method GUIDs
79 */
80 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
81 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
82 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
83 #define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A"
84 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
85
86 /*
87 * Acer ACPI event GUIDs
88 */
89 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
90
91 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
92 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
93 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
94
95 enum acer_wmi_event_ids {
96 WMID_HOTKEY_EVENT = 0x1,
97 };
98
99 static const struct key_entry acer_wmi_keymap[] = {
100 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
101 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */
102 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */
103 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
104 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
105 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
106 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
107 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
108 {KE_IGNORE, 0x41, {KEY_MUTE} },
109 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
110 {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
111 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
112 {KE_IGNORE, 0x45, {KEY_STOP} },
113 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
114 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
115 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
116 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
117 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
118 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
119 {KE_IGNORE, 0x81, {KEY_SLEEP} },
120 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
121 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
122 {KE_END, 0}
123 };
124
125 static struct input_dev *acer_wmi_input_dev;
126
127 struct event_return_value {
128 u8 function;
129 u8 key_num;
130 u16 device_state;
131 u32 reserved;
132 } __attribute__((packed));
133
134 /*
135 * GUID3 Get Device Status device flags
136 */
137 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
138 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
139 #define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
140 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
141
142 struct lm_input_params {
143 u8 function_num; /* Function Number */
144 u16 commun_devices; /* Communication type devices default status */
145 u16 devices; /* Other type devices default status */
146 u8 lm_status; /* Launch Manager Status */
147 u16 reserved;
148 } __attribute__((packed));
149
150 struct lm_return_value {
151 u8 error_code; /* Error Code */
152 u8 ec_return_value; /* EC Return Value */
153 u16 reserved;
154 } __attribute__((packed));
155
156 struct wmid3_gds_input_param { /* Get Device Status input parameter */
157 u8 function_num; /* Function Number */
158 u8 hotkey_number; /* Hotkey Number */
159 u16 devices; /* Get Device */
160 } __attribute__((packed));
161
162 struct wmid3_gds_return_value { /* Get Device Status return value*/
163 u8 error_code; /* Error Code */
164 u8 ec_return_value; /* EC Return Value */
165 u16 devices; /* Current Device Status */
166 u32 reserved;
167 } __attribute__((packed));
168
169 struct hotkey_function_type_aa {
170 u8 type;
171 u8 length;
172 u16 handle;
173 u16 commun_func_bitmap;
174 } __attribute__((packed));
175
176 /*
177 * Interface capability flags
178 */
179 #define ACER_CAP_MAILLED (1<<0)
180 #define ACER_CAP_WIRELESS (1<<1)
181 #define ACER_CAP_BLUETOOTH (1<<2)
182 #define ACER_CAP_BRIGHTNESS (1<<3)
183 #define ACER_CAP_THREEG (1<<4)
184 #define ACER_CAP_ANY (0xFFFFFFFF)
185
186 /*
187 * Interface type flags
188 */
189 enum interface_flags {
190 ACER_AMW0,
191 ACER_AMW0_V2,
192 ACER_WMID,
193 ACER_WMID_v2,
194 };
195
196 #define ACER_DEFAULT_WIRELESS 0
197 #define ACER_DEFAULT_BLUETOOTH 0
198 #define ACER_DEFAULT_MAILLED 0
199 #define ACER_DEFAULT_THREEG 0
200
201 static int max_brightness = 0xF;
202
203 static int mailled = -1;
204 static int brightness = -1;
205 static int threeg = -1;
206 static int force_series;
207 static bool ec_raw_mode;
208 static bool has_type_aa;
209 static u16 commun_func_bitmap;
210
211 module_param(mailled, int, 0444);
212 module_param(brightness, int, 0444);
213 module_param(threeg, int, 0444);
214 module_param(force_series, int, 0444);
215 module_param(ec_raw_mode, bool, 0444);
216 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
217 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
218 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
219 MODULE_PARM_DESC(force_series, "Force a different laptop series");
220 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
221
222 struct acer_data {
223 int mailled;
224 int threeg;
225 int brightness;
226 };
227
228 struct acer_debug {
229 struct dentry *root;
230 struct dentry *devices;
231 u32 wmid_devices;
232 };
233
234 static struct rfkill *wireless_rfkill;
235 static struct rfkill *bluetooth_rfkill;
236 static struct rfkill *threeg_rfkill;
237 static bool rfkill_inited;
238
239 /* Each low-level interface must define at least some of the following */
240 struct wmi_interface {
241 /* The WMI device type */
242 u32 type;
243
244 /* The capabilities this interface provides */
245 u32 capability;
246
247 /* Private data for the current interface */
248 struct acer_data data;
249
250 /* debugfs entries associated with this interface */
251 struct acer_debug debug;
252 };
253
254 /* The static interface pointer, points to the currently detected interface */
255 static struct wmi_interface *interface;
256
257 /*
258 * Embedded Controller quirks
259 * Some laptops require us to directly access the EC to either enable or query
260 * features that are not available through WMI.
261 */
262
263 struct quirk_entry {
264 u8 wireless;
265 u8 mailled;
266 s8 brightness;
267 u8 bluetooth;
268 };
269
270 static struct quirk_entry *quirks;
271
272 static void set_quirks(void)
273 {
274 if (!interface)
275 return;
276
277 if (quirks->mailled)
278 interface->capability |= ACER_CAP_MAILLED;
279
280 if (quirks->brightness)
281 interface->capability |= ACER_CAP_BRIGHTNESS;
282 }
283
284 static int dmi_matched(const struct dmi_system_id *dmi)
285 {
286 quirks = dmi->driver_data;
287 return 1;
288 }
289
290 static struct quirk_entry quirk_unknown = {
291 };
292
293 static struct quirk_entry quirk_acer_aspire_1520 = {
294 .brightness = -1,
295 };
296
297 static struct quirk_entry quirk_acer_travelmate_2490 = {
298 .mailled = 1,
299 };
300
301 /* This AMW0 laptop has no bluetooth */
302 static struct quirk_entry quirk_medion_md_98300 = {
303 .wireless = 1,
304 };
305
306 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
307 .wireless = 2,
308 };
309
310 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
311 .wireless = 3,
312 };
313
314 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
315 static struct dmi_system_id __devinitdata acer_blacklist[] = {
316 {
317 .ident = "Acer Aspire One (SSD)",
318 .matches = {
319 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
320 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
321 },
322 },
323 {
324 .ident = "Acer Aspire One (HDD)",
325 .matches = {
326 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
327 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
328 },
329 },
330 {}
331 };
332
333 static struct dmi_system_id acer_quirks[] = {
334 {
335 .callback = dmi_matched,
336 .ident = "Acer Aspire 1360",
337 .matches = {
338 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
339 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
340 },
341 .driver_data = &quirk_acer_aspire_1520,
342 },
343 {
344 .callback = dmi_matched,
345 .ident = "Acer Aspire 1520",
346 .matches = {
347 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
348 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
349 },
350 .driver_data = &quirk_acer_aspire_1520,
351 },
352 {
353 .callback = dmi_matched,
354 .ident = "Acer Aspire 3100",
355 .matches = {
356 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
357 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
358 },
359 .driver_data = &quirk_acer_travelmate_2490,
360 },
361 {
362 .callback = dmi_matched,
363 .ident = "Acer Aspire 3610",
364 .matches = {
365 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
366 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
367 },
368 .driver_data = &quirk_acer_travelmate_2490,
369 },
370 {
371 .callback = dmi_matched,
372 .ident = "Acer Aspire 5100",
373 .matches = {
374 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
375 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
376 },
377 .driver_data = &quirk_acer_travelmate_2490,
378 },
379 {
380 .callback = dmi_matched,
381 .ident = "Acer Aspire 5610",
382 .matches = {
383 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
384 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
385 },
386 .driver_data = &quirk_acer_travelmate_2490,
387 },
388 {
389 .callback = dmi_matched,
390 .ident = "Acer Aspire 5630",
391 .matches = {
392 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
393 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
394 },
395 .driver_data = &quirk_acer_travelmate_2490,
396 },
397 {
398 .callback = dmi_matched,
399 .ident = "Acer Aspire 5650",
400 .matches = {
401 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
402 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
403 },
404 .driver_data = &quirk_acer_travelmate_2490,
405 },
406 {
407 .callback = dmi_matched,
408 .ident = "Acer Aspire 5680",
409 .matches = {
410 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
411 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
412 },
413 .driver_data = &quirk_acer_travelmate_2490,
414 },
415 {
416 .callback = dmi_matched,
417 .ident = "Acer Aspire 9110",
418 .matches = {
419 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
420 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
421 },
422 .driver_data = &quirk_acer_travelmate_2490,
423 },
424 {
425 .callback = dmi_matched,
426 .ident = "Acer TravelMate 2490",
427 .matches = {
428 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
429 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
430 },
431 .driver_data = &quirk_acer_travelmate_2490,
432 },
433 {
434 .callback = dmi_matched,
435 .ident = "Acer TravelMate 4200",
436 .matches = {
437 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
438 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
439 },
440 .driver_data = &quirk_acer_travelmate_2490,
441 },
442 {
443 .callback = dmi_matched,
444 .ident = "Fujitsu Siemens Amilo Li 1718",
445 .matches = {
446 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
447 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
448 },
449 .driver_data = &quirk_fujitsu_amilo_li_1718,
450 },
451 {
452 .callback = dmi_matched,
453 .ident = "Medion MD 98300",
454 .matches = {
455 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
456 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
457 },
458 .driver_data = &quirk_medion_md_98300,
459 },
460 {
461 .callback = dmi_matched,
462 .ident = "Lenovo Ideapad S205",
463 .matches = {
464 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
465 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
466 },
467 .driver_data = &quirk_lenovo_ideapad_s205,
468 },
469 {
470 .callback = dmi_matched,
471 .ident = "Lenovo 3000 N200",
472 .matches = {
473 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
474 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
475 },
476 .driver_data = &quirk_fujitsu_amilo_li_1718,
477 },
478 {}
479 };
480
481 /* Find which quirks are needed for a particular vendor/ model pair */
482 static void find_quirks(void)
483 {
484 if (!force_series) {
485 dmi_check_system(acer_quirks);
486 } else if (force_series == 2490) {
487 quirks = &quirk_acer_travelmate_2490;
488 }
489
490 if (quirks == NULL)
491 quirks = &quirk_unknown;
492
493 set_quirks();
494 }
495
496 /*
497 * General interface convenience methods
498 */
499
500 static bool has_cap(u32 cap)
501 {
502 if ((interface->capability & cap) != 0)
503 return 1;
504
505 return 0;
506 }
507
508 /*
509 * AMW0 (V1) interface
510 */
511 struct wmab_args {
512 u32 eax;
513 u32 ebx;
514 u32 ecx;
515 u32 edx;
516 };
517
518 struct wmab_ret {
519 u32 eax;
520 u32 ebx;
521 u32 ecx;
522 u32 edx;
523 u32 eex;
524 };
525
526 static acpi_status wmab_execute(struct wmab_args *regbuf,
527 struct acpi_buffer *result)
528 {
529 struct acpi_buffer input;
530 acpi_status status;
531 input.length = sizeof(struct wmab_args);
532 input.pointer = (u8 *)regbuf;
533
534 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
535
536 return status;
537 }
538
539 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
540 struct wmi_interface *iface)
541 {
542 int err;
543 u8 result;
544
545 switch (cap) {
546 case ACER_CAP_MAILLED:
547 switch (quirks->mailled) {
548 default:
549 err = ec_read(0xA, &result);
550 if (err)
551 return AE_ERROR;
552 *value = (result >> 7) & 0x1;
553 return AE_OK;
554 }
555 break;
556 case ACER_CAP_WIRELESS:
557 switch (quirks->wireless) {
558 case 1:
559 err = ec_read(0x7B, &result);
560 if (err)
561 return AE_ERROR;
562 *value = result & 0x1;
563 return AE_OK;
564 case 2:
565 err = ec_read(0x71, &result);
566 if (err)
567 return AE_ERROR;
568 *value = result & 0x1;
569 return AE_OK;
570 case 3:
571 err = ec_read(0x78, &result);
572 if (err)
573 return AE_ERROR;
574 *value = result & 0x1;
575 return AE_OK;
576 default:
577 err = ec_read(0xA, &result);
578 if (err)
579 return AE_ERROR;
580 *value = (result >> 2) & 0x1;
581 return AE_OK;
582 }
583 break;
584 case ACER_CAP_BLUETOOTH:
585 switch (quirks->bluetooth) {
586 default:
587 err = ec_read(0xA, &result);
588 if (err)
589 return AE_ERROR;
590 *value = (result >> 4) & 0x1;
591 return AE_OK;
592 }
593 break;
594 case ACER_CAP_BRIGHTNESS:
595 switch (quirks->brightness) {
596 default:
597 err = ec_read(0x83, &result);
598 if (err)
599 return AE_ERROR;
600 *value = result;
601 return AE_OK;
602 }
603 break;
604 default:
605 return AE_ERROR;
606 }
607 return AE_OK;
608 }
609
610 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
611 {
612 struct wmab_args args;
613
614 args.eax = ACER_AMW0_WRITE;
615 args.ebx = value ? (1<<8) : 0;
616 args.ecx = args.edx = 0;
617
618 switch (cap) {
619 case ACER_CAP_MAILLED:
620 if (value > 1)
621 return AE_BAD_PARAMETER;
622 args.ebx |= ACER_AMW0_MAILLED_MASK;
623 break;
624 case ACER_CAP_WIRELESS:
625 if (value > 1)
626 return AE_BAD_PARAMETER;
627 args.ebx |= ACER_AMW0_WIRELESS_MASK;
628 break;
629 case ACER_CAP_BLUETOOTH:
630 if (value > 1)
631 return AE_BAD_PARAMETER;
632 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
633 break;
634 case ACER_CAP_BRIGHTNESS:
635 if (value > max_brightness)
636 return AE_BAD_PARAMETER;
637 switch (quirks->brightness) {
638 default:
639 return ec_write(0x83, value);
640 break;
641 }
642 default:
643 return AE_ERROR;
644 }
645
646 /* Actually do the set */
647 return wmab_execute(&args, NULL);
648 }
649
650 static acpi_status AMW0_find_mailled(void)
651 {
652 struct wmab_args args;
653 struct wmab_ret ret;
654 acpi_status status = AE_OK;
655 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
656 union acpi_object *obj;
657
658 args.eax = 0x86;
659 args.ebx = args.ecx = args.edx = 0;
660
661 status = wmab_execute(&args, &out);
662 if (ACPI_FAILURE(status))
663 return status;
664
665 obj = (union acpi_object *) out.pointer;
666 if (obj && obj->type == ACPI_TYPE_BUFFER &&
667 obj->buffer.length == sizeof(struct wmab_ret)) {
668 ret = *((struct wmab_ret *) obj->buffer.pointer);
669 } else {
670 kfree(out.pointer);
671 return AE_ERROR;
672 }
673
674 if (ret.eex & 0x1)
675 interface->capability |= ACER_CAP_MAILLED;
676
677 kfree(out.pointer);
678
679 return AE_OK;
680 }
681
682 static acpi_status AMW0_set_capabilities(void)
683 {
684 struct wmab_args args;
685 struct wmab_ret ret;
686 acpi_status status;
687 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
688 union acpi_object *obj;
689
690 /*
691 * On laptops with this strange GUID (non Acer), normal probing doesn't
692 * work.
693 */
694 if (wmi_has_guid(AMW0_GUID2)) {
695 interface->capability |= ACER_CAP_WIRELESS;
696 return AE_OK;
697 }
698
699 args.eax = ACER_AMW0_WRITE;
700 args.ecx = args.edx = 0;
701
702 args.ebx = 0xa2 << 8;
703 args.ebx |= ACER_AMW0_WIRELESS_MASK;
704
705 status = wmab_execute(&args, &out);
706 if (ACPI_FAILURE(status))
707 return status;
708
709 obj = out.pointer;
710 if (obj && obj->type == ACPI_TYPE_BUFFER &&
711 obj->buffer.length == sizeof(struct wmab_ret)) {
712 ret = *((struct wmab_ret *) obj->buffer.pointer);
713 } else {
714 status = AE_ERROR;
715 goto out;
716 }
717
718 if (ret.eax & 0x1)
719 interface->capability |= ACER_CAP_WIRELESS;
720
721 args.ebx = 2 << 8;
722 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
723
724 /*
725 * It's ok to use existing buffer for next wmab_execute call.
726 * But we need to kfree(out.pointer) if next wmab_execute fail.
727 */
728 status = wmab_execute(&args, &out);
729 if (ACPI_FAILURE(status))
730 goto out;
731
732 obj = (union acpi_object *) out.pointer;
733 if (obj && obj->type == ACPI_TYPE_BUFFER
734 && obj->buffer.length == sizeof(struct wmab_ret)) {
735 ret = *((struct wmab_ret *) obj->buffer.pointer);
736 } else {
737 status = AE_ERROR;
738 goto out;
739 }
740
741 if (ret.eax & 0x1)
742 interface->capability |= ACER_CAP_BLUETOOTH;
743
744 /*
745 * This appears to be safe to enable, since all Wistron based laptops
746 * appear to use the same EC register for brightness, even if they
747 * differ for wireless, etc
748 */
749 if (quirks->brightness >= 0)
750 interface->capability |= ACER_CAP_BRIGHTNESS;
751
752 status = AE_OK;
753 out:
754 kfree(out.pointer);
755 return status;
756 }
757
758 static struct wmi_interface AMW0_interface = {
759 .type = ACER_AMW0,
760 };
761
762 static struct wmi_interface AMW0_V2_interface = {
763 .type = ACER_AMW0_V2,
764 };
765
766 /*
767 * New interface (The WMID interface)
768 */
769 static acpi_status
770 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
771 {
772 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
773 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
774 union acpi_object *obj;
775 u32 tmp;
776 acpi_status status;
777
778 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
779
780 if (ACPI_FAILURE(status))
781 return status;
782
783 obj = (union acpi_object *) result.pointer;
784 if (obj && obj->type == ACPI_TYPE_BUFFER &&
785 (obj->buffer.length == sizeof(u32) ||
786 obj->buffer.length == sizeof(u64))) {
787 tmp = *((u32 *) obj->buffer.pointer);
788 } else if (obj->type == ACPI_TYPE_INTEGER) {
789 tmp = (u32) obj->integer.value;
790 } else {
791 tmp = 0;
792 }
793
794 if (out)
795 *out = tmp;
796
797 kfree(result.pointer);
798
799 return status;
800 }
801
802 static acpi_status WMID_get_u32(u32 *value, u32 cap,
803 struct wmi_interface *iface)
804 {
805 acpi_status status;
806 u8 tmp;
807 u32 result, method_id = 0;
808
809 switch (cap) {
810 case ACER_CAP_WIRELESS:
811 method_id = ACER_WMID_GET_WIRELESS_METHODID;
812 break;
813 case ACER_CAP_BLUETOOTH:
814 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
815 break;
816 case ACER_CAP_BRIGHTNESS:
817 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
818 break;
819 case ACER_CAP_THREEG:
820 method_id = ACER_WMID_GET_THREEG_METHODID;
821 break;
822 case ACER_CAP_MAILLED:
823 if (quirks->mailled == 1) {
824 ec_read(0x9f, &tmp);
825 *value = tmp & 0x1;
826 return 0;
827 }
828 default:
829 return AE_ERROR;
830 }
831 status = WMI_execute_u32(method_id, 0, &result);
832
833 if (ACPI_SUCCESS(status))
834 *value = (u8)result;
835
836 return status;
837 }
838
839 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
840 {
841 u32 method_id = 0;
842 char param;
843
844 switch (cap) {
845 case ACER_CAP_BRIGHTNESS:
846 if (value > max_brightness)
847 return AE_BAD_PARAMETER;
848 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
849 break;
850 case ACER_CAP_WIRELESS:
851 if (value > 1)
852 return AE_BAD_PARAMETER;
853 method_id = ACER_WMID_SET_WIRELESS_METHODID;
854 break;
855 case ACER_CAP_BLUETOOTH:
856 if (value > 1)
857 return AE_BAD_PARAMETER;
858 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
859 break;
860 case ACER_CAP_THREEG:
861 if (value > 1)
862 return AE_BAD_PARAMETER;
863 method_id = ACER_WMID_SET_THREEG_METHODID;
864 break;
865 case ACER_CAP_MAILLED:
866 if (value > 1)
867 return AE_BAD_PARAMETER;
868 if (quirks->mailled == 1) {
869 param = value ? 0x92 : 0x93;
870 i8042_lock_chip();
871 i8042_command(&param, 0x1059);
872 i8042_unlock_chip();
873 return 0;
874 }
875 break;
876 default:
877 return AE_ERROR;
878 }
879 return WMI_execute_u32(method_id, (u32)value, NULL);
880 }
881
882 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
883 {
884 struct wmid3_gds_return_value return_value;
885 acpi_status status;
886 union acpi_object *obj;
887 struct wmid3_gds_input_param params = {
888 .function_num = 0x1,
889 .hotkey_number = 0x01,
890 .devices = device,
891 };
892 struct acpi_buffer input = {
893 sizeof(struct wmid3_gds_input_param),
894 &params
895 };
896 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
897
898 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
899 if (ACPI_FAILURE(status))
900 return status;
901
902 obj = output.pointer;
903
904 if (!obj)
905 return AE_ERROR;
906 else if (obj->type != ACPI_TYPE_BUFFER) {
907 kfree(obj);
908 return AE_ERROR;
909 }
910 if (obj->buffer.length != 8) {
911 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
912 kfree(obj);
913 return AE_ERROR;
914 }
915
916 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
917 kfree(obj);
918
919 if (return_value.error_code || return_value.ec_return_value)
920 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
921 device,
922 return_value.error_code,
923 return_value.ec_return_value);
924 else
925 *value = !!(return_value.devices & device);
926
927 return status;
928 }
929
930 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
931 {
932 u16 device;
933
934 switch (cap) {
935 case ACER_CAP_WIRELESS:
936 device = ACER_WMID3_GDS_WIRELESS;
937 break;
938 case ACER_CAP_BLUETOOTH:
939 device = ACER_WMID3_GDS_BLUETOOTH;
940 break;
941 case ACER_CAP_THREEG:
942 device = ACER_WMID3_GDS_THREEG;
943 break;
944 default:
945 return AE_ERROR;
946 }
947 return wmid3_get_device_status(value, device);
948 }
949
950 static acpi_status wmid3_set_device_status(u32 value, u16 device)
951 {
952 struct wmid3_gds_return_value return_value;
953 acpi_status status;
954 union acpi_object *obj;
955 u16 devices;
956 struct wmid3_gds_input_param params = {
957 .function_num = 0x1,
958 .hotkey_number = 0x01,
959 .devices = commun_func_bitmap,
960 };
961 struct acpi_buffer input = {
962 sizeof(struct wmid3_gds_input_param),
963 &params
964 };
965 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
966 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
967
968 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
969 if (ACPI_FAILURE(status))
970 return status;
971
972 obj = output.pointer;
973
974 if (!obj)
975 return AE_ERROR;
976 else if (obj->type != ACPI_TYPE_BUFFER) {
977 kfree(obj);
978 return AE_ERROR;
979 }
980 if (obj->buffer.length != 8) {
981 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
982 kfree(obj);
983 return AE_ERROR;
984 }
985
986 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
987 kfree(obj);
988
989 if (return_value.error_code || return_value.ec_return_value) {
990 pr_warning("Get Current Device Status failed: "
991 "0x%x - 0x%x\n", return_value.error_code,
992 return_value.ec_return_value);
993 return status;
994 }
995
996 devices = return_value.devices;
997 params.function_num = 0x2;
998 params.hotkey_number = 0x01;
999 params.devices = (value) ? (devices | device) : (devices & ~device);
1000
1001 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
1002 if (ACPI_FAILURE(status))
1003 return status;
1004
1005 obj = output2.pointer;
1006
1007 if (!obj)
1008 return AE_ERROR;
1009 else if (obj->type != ACPI_TYPE_BUFFER) {
1010 kfree(obj);
1011 return AE_ERROR;
1012 }
1013 if (obj->buffer.length != 4) {
1014 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1015 kfree(obj);
1016 return AE_ERROR;
1017 }
1018
1019 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1020 kfree(obj);
1021
1022 if (return_value.error_code || return_value.ec_return_value)
1023 pr_warning("Set Device Status failed: "
1024 "0x%x - 0x%x\n", return_value.error_code,
1025 return_value.ec_return_value);
1026
1027 return status;
1028 }
1029
1030 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1031 {
1032 u16 device;
1033
1034 switch (cap) {
1035 case ACER_CAP_WIRELESS:
1036 device = ACER_WMID3_GDS_WIRELESS;
1037 break;
1038 case ACER_CAP_BLUETOOTH:
1039 device = ACER_WMID3_GDS_BLUETOOTH;
1040 break;
1041 case ACER_CAP_THREEG:
1042 device = ACER_WMID3_GDS_THREEG;
1043 break;
1044 default:
1045 return AE_ERROR;
1046 }
1047 return wmid3_set_device_status(value, device);
1048 }
1049
1050 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1051 {
1052 struct hotkey_function_type_aa *type_aa;
1053
1054 /* We are looking for OEM-specific Type AAh */
1055 if (header->type != 0xAA)
1056 return;
1057
1058 has_type_aa = true;
1059 type_aa = (struct hotkey_function_type_aa *) header;
1060
1061 pr_info("Function bitmap for Communication Button: 0x%x\n",
1062 type_aa->commun_func_bitmap);
1063 commun_func_bitmap = type_aa->commun_func_bitmap;
1064
1065 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1066 interface->capability |= ACER_CAP_WIRELESS;
1067 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1068 interface->capability |= ACER_CAP_THREEG;
1069 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1070 interface->capability |= ACER_CAP_BLUETOOTH;
1071 }
1072
1073 static acpi_status WMID_set_capabilities(void)
1074 {
1075 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1076 union acpi_object *obj;
1077 acpi_status status;
1078 u32 devices;
1079
1080 status = wmi_query_block(WMID_GUID2, 1, &out);
1081 if (ACPI_FAILURE(status))
1082 return status;
1083
1084 obj = (union acpi_object *) out.pointer;
1085 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1086 (obj->buffer.length == sizeof(u32) ||
1087 obj->buffer.length == sizeof(u64))) {
1088 devices = *((u32 *) obj->buffer.pointer);
1089 } else if (obj->type == ACPI_TYPE_INTEGER) {
1090 devices = (u32) obj->integer.value;
1091 } else {
1092 kfree(out.pointer);
1093 return AE_ERROR;
1094 }
1095
1096 pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1097 if (devices & 0x07)
1098 interface->capability |= ACER_CAP_WIRELESS;
1099 if (devices & 0x40)
1100 interface->capability |= ACER_CAP_THREEG;
1101 if (devices & 0x10)
1102 interface->capability |= ACER_CAP_BLUETOOTH;
1103
1104 if (!(devices & 0x20))
1105 max_brightness = 0x9;
1106
1107 kfree(out.pointer);
1108 return status;
1109 }
1110
1111 static struct wmi_interface wmid_interface = {
1112 .type = ACER_WMID,
1113 };
1114
1115 static struct wmi_interface wmid_v2_interface = {
1116 .type = ACER_WMID_v2,
1117 };
1118
1119 /*
1120 * Generic Device (interface-independent)
1121 */
1122
1123 static acpi_status get_u32(u32 *value, u32 cap)
1124 {
1125 acpi_status status = AE_ERROR;
1126
1127 switch (interface->type) {
1128 case ACER_AMW0:
1129 status = AMW0_get_u32(value, cap, interface);
1130 break;
1131 case ACER_AMW0_V2:
1132 if (cap == ACER_CAP_MAILLED) {
1133 status = AMW0_get_u32(value, cap, interface);
1134 break;
1135 }
1136 case ACER_WMID:
1137 status = WMID_get_u32(value, cap, interface);
1138 break;
1139 case ACER_WMID_v2:
1140 if (cap & (ACER_CAP_WIRELESS |
1141 ACER_CAP_BLUETOOTH |
1142 ACER_CAP_THREEG))
1143 status = wmid_v2_get_u32(value, cap);
1144 else if (wmi_has_guid(WMID_GUID2))
1145 status = WMID_get_u32(value, cap, interface);
1146 break;
1147 }
1148
1149 return status;
1150 }
1151
1152 static acpi_status set_u32(u32 value, u32 cap)
1153 {
1154 acpi_status status;
1155
1156 if (interface->capability & cap) {
1157 switch (interface->type) {
1158 case ACER_AMW0:
1159 return AMW0_set_u32(value, cap, interface);
1160 case ACER_AMW0_V2:
1161 if (cap == ACER_CAP_MAILLED)
1162 return AMW0_set_u32(value, cap, interface);
1163
1164 /*
1165 * On some models, some WMID methods don't toggle
1166 * properly. For those cases, we want to run the AMW0
1167 * method afterwards to be certain we've really toggled
1168 * the device state.
1169 */
1170 if (cap == ACER_CAP_WIRELESS ||
1171 cap == ACER_CAP_BLUETOOTH) {
1172 status = WMID_set_u32(value, cap, interface);
1173 if (ACPI_FAILURE(status))
1174 return status;
1175
1176 return AMW0_set_u32(value, cap, interface);
1177 }
1178 case ACER_WMID:
1179 return WMID_set_u32(value, cap, interface);
1180 case ACER_WMID_v2:
1181 if (cap & (ACER_CAP_WIRELESS |
1182 ACER_CAP_BLUETOOTH |
1183 ACER_CAP_THREEG))
1184 return wmid_v2_set_u32(value, cap);
1185 else if (wmi_has_guid(WMID_GUID2))
1186 return WMID_set_u32(value, cap, interface);
1187 default:
1188 return AE_BAD_PARAMETER;
1189 }
1190 }
1191 return AE_BAD_PARAMETER;
1192 }
1193
1194 static void __init acer_commandline_init(void)
1195 {
1196 /*
1197 * These will all fail silently if the value given is invalid, or the
1198 * capability isn't available on the given interface
1199 */
1200 if (mailled >= 0)
1201 set_u32(mailled, ACER_CAP_MAILLED);
1202 if (!has_type_aa && threeg >= 0)
1203 set_u32(threeg, ACER_CAP_THREEG);
1204 if (brightness >= 0)
1205 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1206 }
1207
1208 /*
1209 * LED device (Mail LED only, no other LEDs known yet)
1210 */
1211 static void mail_led_set(struct led_classdev *led_cdev,
1212 enum led_brightness value)
1213 {
1214 set_u32(value, ACER_CAP_MAILLED);
1215 }
1216
1217 static struct led_classdev mail_led = {
1218 .name = "acer-wmi::mail",
1219 .brightness_set = mail_led_set,
1220 };
1221
1222 static int __devinit acer_led_init(struct device *dev)
1223 {
1224 return led_classdev_register(dev, &mail_led);
1225 }
1226
1227 static void acer_led_exit(void)
1228 {
1229 set_u32(LED_OFF, ACER_CAP_MAILLED);
1230 led_classdev_unregister(&mail_led);
1231 }
1232
1233 /*
1234 * Backlight device
1235 */
1236 static struct backlight_device *acer_backlight_device;
1237
1238 static int read_brightness(struct backlight_device *bd)
1239 {
1240 u32 value;
1241 get_u32(&value, ACER_CAP_BRIGHTNESS);
1242 return value;
1243 }
1244
1245 static int update_bl_status(struct backlight_device *bd)
1246 {
1247 int intensity = bd->props.brightness;
1248
1249 if (bd->props.power != FB_BLANK_UNBLANK)
1250 intensity = 0;
1251 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1252 intensity = 0;
1253
1254 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1255
1256 return 0;
1257 }
1258
1259 static const struct backlight_ops acer_bl_ops = {
1260 .get_brightness = read_brightness,
1261 .update_status = update_bl_status,
1262 };
1263
1264 static int __devinit acer_backlight_init(struct device *dev)
1265 {
1266 struct backlight_properties props;
1267 struct backlight_device *bd;
1268
1269 memset(&props, 0, sizeof(struct backlight_properties));
1270 props.type = BACKLIGHT_PLATFORM;
1271 props.max_brightness = max_brightness;
1272 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1273 &props);
1274 if (IS_ERR(bd)) {
1275 pr_err("Could not register Acer backlight device\n");
1276 acer_backlight_device = NULL;
1277 return PTR_ERR(bd);
1278 }
1279
1280 acer_backlight_device = bd;
1281
1282 bd->props.power = FB_BLANK_UNBLANK;
1283 bd->props.brightness = read_brightness(bd);
1284 backlight_update_status(bd);
1285 return 0;
1286 }
1287
1288 static void acer_backlight_exit(void)
1289 {
1290 backlight_device_unregister(acer_backlight_device);
1291 }
1292
1293 /*
1294 * Rfkill devices
1295 */
1296 static void acer_rfkill_update(struct work_struct *ignored);
1297 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1298 static void acer_rfkill_update(struct work_struct *ignored)
1299 {
1300 u32 state;
1301 acpi_status status;
1302
1303 if (has_cap(ACER_CAP_WIRELESS)) {
1304 status = get_u32(&state, ACER_CAP_WIRELESS);
1305 if (ACPI_SUCCESS(status)) {
1306 if (quirks->wireless == 3)
1307 rfkill_set_hw_state(wireless_rfkill, !state);
1308 else
1309 rfkill_set_sw_state(wireless_rfkill, !state);
1310 }
1311 }
1312
1313 if (has_cap(ACER_CAP_BLUETOOTH)) {
1314 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1315 if (ACPI_SUCCESS(status))
1316 rfkill_set_sw_state(bluetooth_rfkill, !state);
1317 }
1318
1319 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1320 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1321 if (ACPI_SUCCESS(status))
1322 rfkill_set_sw_state(threeg_rfkill, !state);
1323 }
1324
1325 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1326 }
1327
1328 static int acer_rfkill_set(void *data, bool blocked)
1329 {
1330 acpi_status status;
1331 u32 cap = (unsigned long)data;
1332
1333 if (rfkill_inited) {
1334 status = set_u32(!blocked, cap);
1335 if (ACPI_FAILURE(status))
1336 return -ENODEV;
1337 }
1338
1339 return 0;
1340 }
1341
1342 static const struct rfkill_ops acer_rfkill_ops = {
1343 .set_block = acer_rfkill_set,
1344 };
1345
1346 static struct rfkill *acer_rfkill_register(struct device *dev,
1347 enum rfkill_type type,
1348 char *name, u32 cap)
1349 {
1350 int err;
1351 struct rfkill *rfkill_dev;
1352 u32 state;
1353 acpi_status status;
1354
1355 rfkill_dev = rfkill_alloc(name, dev, type,
1356 &acer_rfkill_ops,
1357 (void *)(unsigned long)cap);
1358 if (!rfkill_dev)
1359 return ERR_PTR(-ENOMEM);
1360
1361 status = get_u32(&state, cap);
1362
1363 err = rfkill_register(rfkill_dev);
1364 if (err) {
1365 rfkill_destroy(rfkill_dev);
1366 return ERR_PTR(err);
1367 }
1368
1369 if (ACPI_SUCCESS(status))
1370 rfkill_set_sw_state(rfkill_dev, !state);
1371
1372 return rfkill_dev;
1373 }
1374
1375 static int acer_rfkill_init(struct device *dev)
1376 {
1377 int err;
1378
1379 if (has_cap(ACER_CAP_WIRELESS)) {
1380 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1381 "acer-wireless", ACER_CAP_WIRELESS);
1382 if (IS_ERR(wireless_rfkill)) {
1383 err = PTR_ERR(wireless_rfkill);
1384 goto error_wireless;
1385 }
1386 }
1387
1388 if (has_cap(ACER_CAP_BLUETOOTH)) {
1389 bluetooth_rfkill = acer_rfkill_register(dev,
1390 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1391 ACER_CAP_BLUETOOTH);
1392 if (IS_ERR(bluetooth_rfkill)) {
1393 err = PTR_ERR(bluetooth_rfkill);
1394 goto error_bluetooth;
1395 }
1396 }
1397
1398 if (has_cap(ACER_CAP_THREEG)) {
1399 threeg_rfkill = acer_rfkill_register(dev,
1400 RFKILL_TYPE_WWAN, "acer-threeg",
1401 ACER_CAP_THREEG);
1402 if (IS_ERR(threeg_rfkill)) {
1403 err = PTR_ERR(threeg_rfkill);
1404 goto error_threeg;
1405 }
1406 }
1407
1408 rfkill_inited = true;
1409
1410 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1411 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1412 schedule_delayed_work(&acer_rfkill_work,
1413 round_jiffies_relative(HZ));
1414
1415 return 0;
1416
1417 error_threeg:
1418 if (has_cap(ACER_CAP_BLUETOOTH)) {
1419 rfkill_unregister(bluetooth_rfkill);
1420 rfkill_destroy(bluetooth_rfkill);
1421 }
1422 error_bluetooth:
1423 if (has_cap(ACER_CAP_WIRELESS)) {
1424 rfkill_unregister(wireless_rfkill);
1425 rfkill_destroy(wireless_rfkill);
1426 }
1427 error_wireless:
1428 return err;
1429 }
1430
1431 static void acer_rfkill_exit(void)
1432 {
1433 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1434 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1435 cancel_delayed_work_sync(&acer_rfkill_work);
1436
1437 if (has_cap(ACER_CAP_WIRELESS)) {
1438 rfkill_unregister(wireless_rfkill);
1439 rfkill_destroy(wireless_rfkill);
1440 }
1441
1442 if (has_cap(ACER_CAP_BLUETOOTH)) {
1443 rfkill_unregister(bluetooth_rfkill);
1444 rfkill_destroy(bluetooth_rfkill);
1445 }
1446
1447 if (has_cap(ACER_CAP_THREEG)) {
1448 rfkill_unregister(threeg_rfkill);
1449 rfkill_destroy(threeg_rfkill);
1450 }
1451 return;
1452 }
1453
1454 /*
1455 * sysfs interface
1456 */
1457 static ssize_t show_bool_threeg(struct device *dev,
1458 struct device_attribute *attr, char *buf)
1459 {
1460 u32 result; \
1461 acpi_status status;
1462
1463 pr_info("This threeg sysfs will be removed in 2012"
1464 " - used by: %s\n", current->comm);
1465 status = get_u32(&result, ACER_CAP_THREEG);
1466 if (ACPI_SUCCESS(status))
1467 return sprintf(buf, "%u\n", result);
1468 return sprintf(buf, "Read error\n");
1469 }
1470
1471 static ssize_t set_bool_threeg(struct device *dev,
1472 struct device_attribute *attr, const char *buf, size_t count)
1473 {
1474 u32 tmp = simple_strtoul(buf, NULL, 10);
1475 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1476 pr_info("This threeg sysfs will be removed in 2012"
1477 " - used by: %s\n", current->comm);
1478 if (ACPI_FAILURE(status))
1479 return -EINVAL;
1480 return count;
1481 }
1482 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1483 set_bool_threeg);
1484
1485 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1486 char *buf)
1487 {
1488 pr_info("This interface sysfs will be removed in 2012"
1489 " - used by: %s\n", current->comm);
1490 switch (interface->type) {
1491 case ACER_AMW0:
1492 return sprintf(buf, "AMW0\n");
1493 case ACER_AMW0_V2:
1494 return sprintf(buf, "AMW0 v2\n");
1495 case ACER_WMID:
1496 return sprintf(buf, "WMID\n");
1497 case ACER_WMID_v2:
1498 return sprintf(buf, "WMID v2\n");
1499 default:
1500 return sprintf(buf, "Error!\n");
1501 }
1502 }
1503
1504 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1505
1506 static void acer_wmi_notify(u32 value, void *context)
1507 {
1508 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1509 union acpi_object *obj;
1510 struct event_return_value return_value;
1511 acpi_status status;
1512 u16 device_state;
1513 const struct key_entry *key;
1514
1515 status = wmi_get_event_data(value, &response);
1516 if (status != AE_OK) {
1517 pr_warn("bad event status 0x%x\n", status);
1518 return;
1519 }
1520
1521 obj = (union acpi_object *)response.pointer;
1522
1523 if (!obj)
1524 return;
1525 if (obj->type != ACPI_TYPE_BUFFER) {
1526 pr_warn("Unknown response received %d\n", obj->type);
1527 kfree(obj);
1528 return;
1529 }
1530 if (obj->buffer.length != 8) {
1531 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1532 kfree(obj);
1533 return;
1534 }
1535
1536 return_value = *((struct event_return_value *)obj->buffer.pointer);
1537 kfree(obj);
1538
1539 switch (return_value.function) {
1540 case WMID_HOTKEY_EVENT:
1541 device_state = return_value.device_state;
1542 pr_debug("device state: 0x%x\n", device_state);
1543
1544 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1545 return_value.key_num);
1546 if (!key) {
1547 pr_warn("Unknown key number - 0x%x\n",
1548 return_value.key_num);
1549 } else {
1550 switch (key->keycode) {
1551 case KEY_WLAN:
1552 case KEY_BLUETOOTH:
1553 if (has_cap(ACER_CAP_WIRELESS))
1554 rfkill_set_sw_state(wireless_rfkill,
1555 !(device_state & ACER_WMID3_GDS_WIRELESS));
1556 if (has_cap(ACER_CAP_THREEG))
1557 rfkill_set_sw_state(threeg_rfkill,
1558 !(device_state & ACER_WMID3_GDS_THREEG));
1559 if (has_cap(ACER_CAP_BLUETOOTH))
1560 rfkill_set_sw_state(bluetooth_rfkill,
1561 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1562 break;
1563 }
1564 sparse_keymap_report_entry(acer_wmi_input_dev, key,
1565 1, true);
1566 }
1567 break;
1568 default:
1569 pr_warn("Unknown function number - %d - %d\n",
1570 return_value.function, return_value.key_num);
1571 break;
1572 }
1573 }
1574
1575 static acpi_status
1576 wmid3_set_lm_mode(struct lm_input_params *params,
1577 struct lm_return_value *return_value)
1578 {
1579 acpi_status status;
1580 union acpi_object *obj;
1581
1582 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1583 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1584
1585 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1586 if (ACPI_FAILURE(status))
1587 return status;
1588
1589 obj = output.pointer;
1590
1591 if (!obj)
1592 return AE_ERROR;
1593 else if (obj->type != ACPI_TYPE_BUFFER) {
1594 kfree(obj);
1595 return AE_ERROR;
1596 }
1597 if (obj->buffer.length != 4) {
1598 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1599 kfree(obj);
1600 return AE_ERROR;
1601 }
1602
1603 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1604 kfree(obj);
1605
1606 return status;
1607 }
1608
1609 static int acer_wmi_enable_ec_raw(void)
1610 {
1611 struct lm_return_value return_value;
1612 acpi_status status;
1613 struct lm_input_params params = {
1614 .function_num = 0x1,
1615 .commun_devices = 0xFFFF,
1616 .devices = 0xFFFF,
1617 .lm_status = 0x00, /* Launch Manager Deactive */
1618 };
1619
1620 status = wmid3_set_lm_mode(&params, &return_value);
1621
1622 if (return_value.error_code || return_value.ec_return_value)
1623 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1624 return_value.error_code,
1625 return_value.ec_return_value);
1626 else
1627 pr_info("Enabled EC raw mode\n");
1628
1629 return status;
1630 }
1631
1632 static int acer_wmi_enable_lm(void)
1633 {
1634 struct lm_return_value return_value;
1635 acpi_status status;
1636 struct lm_input_params params = {
1637 .function_num = 0x1,
1638 .commun_devices = 0xFFFF,
1639 .devices = 0xFFFF,
1640 .lm_status = 0x01, /* Launch Manager Active */
1641 };
1642
1643 status = wmid3_set_lm_mode(&params, &return_value);
1644
1645 if (return_value.error_code || return_value.ec_return_value)
1646 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1647 return_value.error_code,
1648 return_value.ec_return_value);
1649
1650 return status;
1651 }
1652
1653 static int __init acer_wmi_input_setup(void)
1654 {
1655 acpi_status status;
1656 int err;
1657
1658 acer_wmi_input_dev = input_allocate_device();
1659 if (!acer_wmi_input_dev)
1660 return -ENOMEM;
1661
1662 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1663 acer_wmi_input_dev->phys = "wmi/input0";
1664 acer_wmi_input_dev->id.bustype = BUS_HOST;
1665
1666 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1667 if (err)
1668 goto err_free_dev;
1669
1670 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1671 acer_wmi_notify, NULL);
1672 if (ACPI_FAILURE(status)) {
1673 err = -EIO;
1674 goto err_free_keymap;
1675 }
1676
1677 err = input_register_device(acer_wmi_input_dev);
1678 if (err)
1679 goto err_uninstall_notifier;
1680
1681 return 0;
1682
1683 err_uninstall_notifier:
1684 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1685 err_free_keymap:
1686 sparse_keymap_free(acer_wmi_input_dev);
1687 err_free_dev:
1688 input_free_device(acer_wmi_input_dev);
1689 return err;
1690 }
1691
1692 static void acer_wmi_input_destroy(void)
1693 {
1694 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1695 sparse_keymap_free(acer_wmi_input_dev);
1696 input_unregister_device(acer_wmi_input_dev);
1697 }
1698
1699 /*
1700 * debugfs functions
1701 */
1702 static u32 get_wmid_devices(void)
1703 {
1704 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1705 union acpi_object *obj;
1706 acpi_status status;
1707 u32 devices = 0;
1708
1709 status = wmi_query_block(WMID_GUID2, 1, &out);
1710 if (ACPI_FAILURE(status))
1711 return 0;
1712
1713 obj = (union acpi_object *) out.pointer;
1714 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1715 (obj->buffer.length == sizeof(u32) ||
1716 obj->buffer.length == sizeof(u64))) {
1717 devices = *((u32 *) obj->buffer.pointer);
1718 } else if (obj->type == ACPI_TYPE_INTEGER) {
1719 devices = (u32) obj->integer.value;
1720 }
1721
1722 kfree(out.pointer);
1723 return devices;
1724 }
1725
1726 /*
1727 * Platform device
1728 */
1729 static int __devinit acer_platform_probe(struct platform_device *device)
1730 {
1731 int err;
1732
1733 if (has_cap(ACER_CAP_MAILLED)) {
1734 err = acer_led_init(&device->dev);
1735 if (err)
1736 goto error_mailled;
1737 }
1738
1739 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1740 err = acer_backlight_init(&device->dev);
1741 if (err)
1742 goto error_brightness;
1743 }
1744
1745 err = acer_rfkill_init(&device->dev);
1746 if (err)
1747 goto error_rfkill;
1748
1749 return err;
1750
1751 error_rfkill:
1752 if (has_cap(ACER_CAP_BRIGHTNESS))
1753 acer_backlight_exit();
1754 error_brightness:
1755 if (has_cap(ACER_CAP_MAILLED))
1756 acer_led_exit();
1757 error_mailled:
1758 return err;
1759 }
1760
1761 static int acer_platform_remove(struct platform_device *device)
1762 {
1763 if (has_cap(ACER_CAP_MAILLED))
1764 acer_led_exit();
1765 if (has_cap(ACER_CAP_BRIGHTNESS))
1766 acer_backlight_exit();
1767
1768 acer_rfkill_exit();
1769 return 0;
1770 }
1771
1772 static int acer_platform_suspend(struct platform_device *dev,
1773 pm_message_t state)
1774 {
1775 u32 value;
1776 struct acer_data *data = &interface->data;
1777
1778 if (!data)
1779 return -ENOMEM;
1780
1781 if (has_cap(ACER_CAP_MAILLED)) {
1782 get_u32(&value, ACER_CAP_MAILLED);
1783 set_u32(LED_OFF, ACER_CAP_MAILLED);
1784 data->mailled = value;
1785 }
1786
1787 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1788 get_u32(&value, ACER_CAP_BRIGHTNESS);
1789 data->brightness = value;
1790 }
1791
1792 return 0;
1793 }
1794
1795 static int acer_platform_resume(struct platform_device *device)
1796 {
1797 struct acer_data *data = &interface->data;
1798
1799 if (!data)
1800 return -ENOMEM;
1801
1802 if (has_cap(ACER_CAP_MAILLED))
1803 set_u32(data->mailled, ACER_CAP_MAILLED);
1804
1805 if (has_cap(ACER_CAP_BRIGHTNESS))
1806 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1807
1808 return 0;
1809 }
1810
1811 static void acer_platform_shutdown(struct platform_device *device)
1812 {
1813 struct acer_data *data = &interface->data;
1814
1815 if (!data)
1816 return;
1817
1818 if (has_cap(ACER_CAP_MAILLED))
1819 set_u32(LED_OFF, ACER_CAP_MAILLED);
1820 }
1821
1822 static struct platform_driver acer_platform_driver = {
1823 .driver = {
1824 .name = "acer-wmi",
1825 .owner = THIS_MODULE,
1826 },
1827 .probe = acer_platform_probe,
1828 .remove = acer_platform_remove,
1829 .suspend = acer_platform_suspend,
1830 .resume = acer_platform_resume,
1831 .shutdown = acer_platform_shutdown,
1832 };
1833
1834 static struct platform_device *acer_platform_device;
1835
1836 static int remove_sysfs(struct platform_device *device)
1837 {
1838 if (has_cap(ACER_CAP_THREEG))
1839 device_remove_file(&device->dev, &dev_attr_threeg);
1840
1841 device_remove_file(&device->dev, &dev_attr_interface);
1842
1843 return 0;
1844 }
1845
1846 static int create_sysfs(void)
1847 {
1848 int retval = -ENOMEM;
1849
1850 if (has_cap(ACER_CAP_THREEG)) {
1851 retval = device_create_file(&acer_platform_device->dev,
1852 &dev_attr_threeg);
1853 if (retval)
1854 goto error_sysfs;
1855 }
1856
1857 retval = device_create_file(&acer_platform_device->dev,
1858 &dev_attr_interface);
1859 if (retval)
1860 goto error_sysfs;
1861
1862 return 0;
1863
1864 error_sysfs:
1865 remove_sysfs(acer_platform_device);
1866 return retval;
1867 }
1868
1869 static void remove_debugfs(void)
1870 {
1871 debugfs_remove(interface->debug.devices);
1872 debugfs_remove(interface->debug.root);
1873 }
1874
1875 static int create_debugfs(void)
1876 {
1877 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1878 if (!interface->debug.root) {
1879 pr_err("Failed to create debugfs directory");
1880 return -ENOMEM;
1881 }
1882
1883 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1884 interface->debug.root,
1885 &interface->debug.wmid_devices);
1886 if (!interface->debug.devices)
1887 goto error_debugfs;
1888
1889 return 0;
1890
1891 error_debugfs:
1892 remove_debugfs();
1893 return -ENOMEM;
1894 }
1895
1896 static int __init acer_wmi_init(void)
1897 {
1898 int err;
1899
1900 pr_info("Acer Laptop ACPI-WMI Extras\n");
1901
1902 if (dmi_check_system(acer_blacklist)) {
1903 pr_info("Blacklisted hardware detected - not loading\n");
1904 return -ENODEV;
1905 }
1906
1907 find_quirks();
1908
1909 /*
1910 * Detect which ACPI-WMI interface we're using.
1911 */
1912 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1913 interface = &AMW0_V2_interface;
1914
1915 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1916 interface = &wmid_interface;
1917
1918 if (wmi_has_guid(WMID_GUID3))
1919 interface = &wmid_v2_interface;
1920
1921 if (interface)
1922 dmi_walk(type_aa_dmi_decode, NULL);
1923
1924 if (wmi_has_guid(WMID_GUID2) && interface) {
1925 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
1926 pr_err("Unable to detect available WMID devices\n");
1927 return -ENODEV;
1928 }
1929 /* WMID always provides brightness methods */
1930 interface->capability |= ACER_CAP_BRIGHTNESS;
1931 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
1932 pr_err("No WMID device detection method found\n");
1933 return -ENODEV;
1934 }
1935
1936 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1937 interface = &AMW0_interface;
1938
1939 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1940 pr_err("Unable to detect available AMW0 devices\n");
1941 return -ENODEV;
1942 }
1943 }
1944
1945 if (wmi_has_guid(AMW0_GUID1))
1946 AMW0_find_mailled();
1947
1948 if (!interface) {
1949 pr_err("No or unsupported WMI interface, unable to load\n");
1950 return -ENODEV;
1951 }
1952
1953 set_quirks();
1954
1955 if (acpi_video_backlight_support()) {
1956 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1957 pr_info("Brightness must be controlled by "
1958 "generic video driver\n");
1959 }
1960
1961 if (wmi_has_guid(WMID_GUID3)) {
1962 if (ec_raw_mode) {
1963 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1964 pr_err("Cannot enable EC raw mode\n");
1965 return -ENODEV;
1966 }
1967 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1968 pr_err("Cannot enable Launch Manager mode\n");
1969 return -ENODEV;
1970 }
1971 } else if (ec_raw_mode) {
1972 pr_info("No WMID EC raw mode enable method\n");
1973 }
1974
1975 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1976 err = acer_wmi_input_setup();
1977 if (err)
1978 return err;
1979 }
1980
1981 err = platform_driver_register(&acer_platform_driver);
1982 if (err) {
1983 pr_err("Unable to register platform driver.\n");
1984 goto error_platform_register;
1985 }
1986
1987 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1988 if (!acer_platform_device) {
1989 err = -ENOMEM;
1990 goto error_device_alloc;
1991 }
1992
1993 err = platform_device_add(acer_platform_device);
1994 if (err)
1995 goto error_device_add;
1996
1997 err = create_sysfs();
1998 if (err)
1999 goto error_create_sys;
2000
2001 if (wmi_has_guid(WMID_GUID2)) {
2002 interface->debug.wmid_devices = get_wmid_devices();
2003 err = create_debugfs();
2004 if (err)
2005 goto error_create_debugfs;
2006 }
2007
2008 /* Override any initial settings with values from the commandline */
2009 acer_commandline_init();
2010
2011 return 0;
2012
2013 error_create_debugfs:
2014 remove_sysfs(acer_platform_device);
2015 error_create_sys:
2016 platform_device_del(acer_platform_device);
2017 error_device_add:
2018 platform_device_put(acer_platform_device);
2019 error_device_alloc:
2020 platform_driver_unregister(&acer_platform_driver);
2021 error_platform_register:
2022 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2023 acer_wmi_input_destroy();
2024
2025 return err;
2026 }
2027
2028 static void __exit acer_wmi_exit(void)
2029 {
2030 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2031 acer_wmi_input_destroy();
2032
2033 remove_sysfs(acer_platform_device);
2034 remove_debugfs();
2035 platform_device_unregister(acer_platform_device);
2036 platform_driver_unregister(&acer_platform_driver);
2037
2038 pr_info("Acer Laptop WMI Extras unloaded\n");
2039 return;
2040 }
2041
2042 module_init(acer_wmi_init);
2043 module_exit(acer_wmi_exit);
Linux with added FPC-III support