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[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / platform / x86 / acer-wmi.c
CommitLineData
745a5d21
CC		 1/*
2 * Acer WMI Laptop Extras
3 *
4f0175dc 4 * Copyright (C) 2007-2009 Carlos Corbacho <carlos@strangeworlds.co.uk>
745a5d21
CC		 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
745a5d21
CC		 25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/init.h>
28#include <linux/types.h>
29#include <linux/dmi.h>
f2b585b4 30#include <linux/fb.h>
745a5d21
CC		 31#include <linux/backlight.h>
32#include <linux/leds.h>
33#include <linux/platform_device.h>
34#include <linux/acpi.h>
35#include <linux/i8042.h>
0606e1ab
CC		 36#include <linux/rfkill.h>
37#include <linux/workqueue.h>
81143522 38#include <linux/debugfs.h>
745a5d21
CC		 39
40#include <acpi/acpi_drivers.h>
41
42MODULE_AUTHOR("Carlos Corbacho");
43MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
44MODULE_LICENSE("GPL");
45
46#define ACER_LOGPREFIX "acer-wmi: "
47#define ACER_ERR KERN_ERR ACER_LOGPREFIX
48#define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
49#define ACER_INFO KERN_INFO ACER_LOGPREFIX
50
51/*
52 * The following defines quirks to get some specific functions to work
53 * which are known to not be supported over ACPI-WMI (such as the mail LED
54 * on WMID based Acer's)
55 */
56struct acer_quirks {
57 const char *vendor;
58 const char *model;
59 u16 quirks;
60};
61
62/*
63 * Magic Number
64 * Meaning is unknown - this number is required for writing to ACPI for AMW0
65 * (it's also used in acerhk when directly accessing the BIOS)
66 */
67#define ACER_AMW0_WRITE 0x9610
68
69/*
70 * Bit masks for the AMW0 interface
71 */
72#define ACER_AMW0_WIRELESS_MASK 0x35
73#define ACER_AMW0_BLUETOOTH_MASK 0x34
74#define ACER_AMW0_MAILLED_MASK 0x31
75
76/*
77 * Method IDs for WMID interface
78 */
79#define ACER_WMID_GET_WIRELESS_METHODID 1
80#define ACER_WMID_GET_BLUETOOTH_METHODID 2
81#define ACER_WMID_GET_BRIGHTNESS_METHODID 3
82#define ACER_WMID_SET_WIRELESS_METHODID 4
83#define ACER_WMID_SET_BLUETOOTH_METHODID 5
84#define ACER_WMID_SET_BRIGHTNESS_METHODID 6
85#define ACER_WMID_GET_THREEG_METHODID 10
86#define ACER_WMID_SET_THREEG_METHODID 11
87
88/*
89 * Acer ACPI method GUIDs
90 */
91#define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
5753dd53 92#define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
745a5d21
CC		 93#define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
94#define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
95
96MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
97MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
98
99/* Temporary workaround until the WMI sysfs interface goes in */
100MODULE_ALIAS("dmi:*:*Acer*:*:");
101
102/*
103 * Interface capability flags
104 */
105#define ACER_CAP_MAILLED (1<<0)
106#define ACER_CAP_WIRELESS (1<<1)
107#define ACER_CAP_BLUETOOTH (1<<2)
108#define ACER_CAP_BRIGHTNESS (1<<3)
109#define ACER_CAP_THREEG (1<<4)
110#define ACER_CAP_ANY (0xFFFFFFFF)
111
112/*
113 * Interface type flags
114 */
115enum interface_flags {
116 ACER_AMW0,
117 ACER_AMW0_V2,
118 ACER_WMID,
119};
120
121#define ACER_DEFAULT_WIRELESS 0
122#define ACER_DEFAULT_BLUETOOTH 0
123#define ACER_DEFAULT_MAILLED 0
124#define ACER_DEFAULT_THREEG 0
125
126static int max_brightness = 0xF;
127
745a5d21
CC		 128static int mailled = -1;
129static int brightness = -1;
130static int threeg = -1;
131static int force_series;
132
133module_param(mailled, int, 0444);
745a5d21
CC		 134module_param(brightness, int, 0444);
135module_param(threeg, int, 0444);
136module_param(force_series, int, 0444);
745a5d21
CC		 137MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
138MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
139MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
140MODULE_PARM_DESC(force_series, "Force a different laptop series");
141
142struct acer_data {
143 int mailled;
745a5d21
CC		 144 int threeg;
145 int brightness;
146};
147
81143522
CC		 148struct acer_debug {
149 struct dentry *root;
150 struct dentry *devices;
151 u32 wmid_devices;
152};
153
0606e1ab
CC		 154static struct rfkill *wireless_rfkill;
155static struct rfkill *bluetooth_rfkill;
156
745a5d21
CC		 157/* Each low-level interface must define at least some of the following */
158struct wmi_interface {
159 /* The WMI device type */
160 u32 type;
161
162 /* The capabilities this interface provides */
163 u32 capability;
164
165 /* Private data for the current interface */
166 struct acer_data data;
81143522
CC		 167
168 /* debugfs entries associated with this interface */
169 struct acer_debug debug;
745a5d21
CC		 170};
171
172/* The static interface pointer, points to the currently detected interface */
173static struct wmi_interface *interface;
174
175/*
176 * Embedded Controller quirks
177 * Some laptops require us to directly access the EC to either enable or query
178 * features that are not available through WMI.
179 */
180
181struct quirk_entry {
182 u8 wireless;
183 u8 mailled;
9991d9f2 184 s8 brightness;
745a5d21
CC		 185 u8 bluetooth;
186};
187
188static struct quirk_entry *quirks;
189
190static void set_quirks(void)
191{
83097aca
AV		 192 if (!interface)
193 return;
194
745a5d21
CC		 195 if (quirks->mailled)
196 interface->capability |= ACER_CAP_MAILLED;
197
198 if (quirks->brightness)
199 interface->capability |= ACER_CAP_BRIGHTNESS;
200}
201
202static int dmi_matched(const struct dmi_system_id *dmi)
203{
204 quirks = dmi->driver_data;
205 return 0;
206}
207
208static struct quirk_entry quirk_unknown = {
209};
210
9991d9f2
CC		 211static struct quirk_entry quirk_acer_aspire_1520 = {
212 .brightness = -1,
213};
214
745a5d21
CC		 215static struct quirk_entry quirk_acer_travelmate_2490 = {
216 .mailled = 1,
217};
218
219/* This AMW0 laptop has no bluetooth */
220static struct quirk_entry quirk_medion_md_98300 = {
221 .wireless = 1,
222};
223
6f061ab5
CC		 224static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
225 .wireless = 2,
226};
227
a74dd5fd
CC		 228/* The Aspire One has a dummy ACPI-WMI interface - disable it */
229static struct dmi_system_id __devinitdata acer_blacklist[] = {
230 {
231 .ident = "Acer Aspire One (SSD)",
232 .matches = {
233 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
234 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
235 },
236 },
237 {
238 .ident = "Acer Aspire One (HDD)",
239 .matches = {
240 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
241 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
242 },
243 },
244 {}
245};
246
745a5d21 247static struct dmi_system_id acer_quirks[] = {
9991d9f2
CC		 248 {
249 .callback = dmi_matched,
250 .ident = "Acer Aspire 1360",
251 .matches = {
252 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
253 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
254 },
255 .driver_data = &quirk_acer_aspire_1520,
256 },
257 {
258 .callback = dmi_matched,
259 .ident = "Acer Aspire 1520",
260 .matches = {
261 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
262 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
263 },
264 .driver_data = &quirk_acer_aspire_1520,
265 },
745a5d21
CC		 266 {
267 .callback = dmi_matched,
268 .ident = "Acer Aspire 3100",
269 .matches = {
270 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
271 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
272 },
273 .driver_data = &quirk_acer_travelmate_2490,
274 },
ed9cfe98
CC		 275 {
276 .callback = dmi_matched,
277 .ident = "Acer Aspire 3610",
278 .matches = {
279 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
280 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
281 },
282 .driver_data = &quirk_acer_travelmate_2490,
283 },
745a5d21
CC		 284 {
285 .callback = dmi_matched,
286 .ident = "Acer Aspire 5100",
287 .matches = {
288 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
289 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
290 },
291 .driver_data = &quirk_acer_travelmate_2490,
292 },
ed9cfe98
CC		 293 {
294 .callback = dmi_matched,
295 .ident = "Acer Aspire 5610",
296 .matches = {
297 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
298 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
299 },
300 .driver_data = &quirk_acer_travelmate_2490,
301 },
745a5d21
CC		 302 {
303 .callback = dmi_matched,
304 .ident = "Acer Aspire 5630",
305 .matches = {
306 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
307 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
308 },
309 .driver_data = &quirk_acer_travelmate_2490,
310 },
311 {
312 .callback = dmi_matched,
313 .ident = "Acer Aspire 5650",
314 .matches = {
315 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
316 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
317 },
318 .driver_data = &quirk_acer_travelmate_2490,
319 },
320 {
321 .callback = dmi_matched,
322 .ident = "Acer Aspire 5680",
323 .matches = {
324 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
325 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
326 },
327 .driver_data = &quirk_acer_travelmate_2490,
328 },
329 {
330 .callback = dmi_matched,
331 .ident = "Acer Aspire 9110",
332 .matches = {
333 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
334 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
335 },
336 .driver_data = &quirk_acer_travelmate_2490,
337 },
338 {
339 .callback = dmi_matched,
340 .ident = "Acer TravelMate 2490",
341 .matches = {
342 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
343 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
344 },
345 .driver_data = &quirk_acer_travelmate_2490,
346 },
262ee35b
CC		 347 {
348 .callback = dmi_matched,
349 .ident = "Acer TravelMate 4200",
350 .matches = {
351 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
352 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
353 },
354 .driver_data = &quirk_acer_travelmate_2490,
355 },
6f061ab5
CC		 356 {
357 .callback = dmi_matched,
358 .ident = "Fujitsu Siemens Amilo Li 1718",
359 .matches = {
360 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
361 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
362 },
363 .driver_data = &quirk_fujitsu_amilo_li_1718,
364 },
745a5d21
CC		 365 {
366 .callback = dmi_matched,
367 .ident = "Medion MD 98300",
368 .matches = {
369 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
370 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
371 },
372 .driver_data = &quirk_medion_md_98300,
373 },
374 {}
375};
376
377/* Find which quirks are needed for a particular vendor/ model pair */
378static void find_quirks(void)
379{
380 if (!force_series) {
381 dmi_check_system(acer_quirks);
382 } else if (force_series == 2490) {
383 quirks = &quirk_acer_travelmate_2490;
384 }
385
386 if (quirks == NULL)
387 quirks = &quirk_unknown;
388
389 set_quirks();
390}
391
392/*
393 * General interface convenience methods
394 */
395
396static bool has_cap(u32 cap)
397{
398 if ((interface->capability & cap) != 0)
399 return 1;
400
401 return 0;
402}
403
404/*
405 * AMW0 (V1) interface
406 */
407struct wmab_args {
408 u32 eax;
409 u32 ebx;
410 u32 ecx;
411 u32 edx;
412};
413
414struct wmab_ret {
415 u32 eax;
416 u32 ebx;
417 u32 ecx;
418 u32 edx;
419 u32 eex;
420};
421
422static acpi_status wmab_execute(struct wmab_args *regbuf,
423struct acpi_buffer *result)
424{
425 struct acpi_buffer input;
426 acpi_status status;
427 input.length = sizeof(struct wmab_args);
428 input.pointer = (u8 *)regbuf;
429
430 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
431
432 return status;
433}
434
435static acpi_status AMW0_get_u32(u32 *value, u32 cap,
436struct wmi_interface *iface)
437{
438 int err;
439 u8 result;
440
441 switch (cap) {
442 case ACER_CAP_MAILLED:
443 switch (quirks->mailled) {
444 default:
445 err = ec_read(0xA, &result);
446 if (err)
447 return AE_ERROR;
448 *value = (result >> 7) & 0x1;
449 return AE_OK;
450 }
451 break;
452 case ACER_CAP_WIRELESS:
453 switch (quirks->wireless) {
454 case 1:
455 err = ec_read(0x7B, &result);
456 if (err)
457 return AE_ERROR;
458 *value = result & 0x1;
459 return AE_OK;
6f061ab5
CC		 460 case 2:
461 err = ec_read(0x71, &result);
462 if (err)
463 return AE_ERROR;
464 *value = result & 0x1;
465 return AE_OK;
745a5d21
CC		 466 default:
467 err = ec_read(0xA, &result);
468 if (err)
469 return AE_ERROR;
470 *value = (result >> 2) & 0x1;
471 return AE_OK;
472 }
473 break;
474 case ACER_CAP_BLUETOOTH:
475 switch (quirks->bluetooth) {
476 default:
477 err = ec_read(0xA, &result);
478 if (err)
479 return AE_ERROR;
480 *value = (result >> 4) & 0x1;
481 return AE_OK;
482 }
483 break;
484 case ACER_CAP_BRIGHTNESS:
485 switch (quirks->brightness) {
486 default:
487 err = ec_read(0x83, &result);
488 if (err)
489 return AE_ERROR;
490 *value = result;
491 return AE_OK;
492 }
493 break;
494 default:
08237974 495 return AE_ERROR;
745a5d21
CC		 496 }
497 return AE_OK;
498}
499
500static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
501{
502 struct wmab_args args;
503
504 args.eax = ACER_AMW0_WRITE;
505 args.ebx = value ? (1<<8) : 0;
506 args.ecx = args.edx = 0;
507
508 switch (cap) {
509 case ACER_CAP_MAILLED:
510 if (value > 1)
511 return AE_BAD_PARAMETER;
512 args.ebx |= ACER_AMW0_MAILLED_MASK;
513 break;
514 case ACER_CAP_WIRELESS:
515 if (value > 1)
516 return AE_BAD_PARAMETER;
517 args.ebx |= ACER_AMW0_WIRELESS_MASK;
518 break;
519 case ACER_CAP_BLUETOOTH:
520 if (value > 1)
521 return AE_BAD_PARAMETER;
522 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
523 break;
524 case ACER_CAP_BRIGHTNESS:
525 if (value > max_brightness)
526 return AE_BAD_PARAMETER;
527 switch (quirks->brightness) {
745a5d21 528 default:
4609d029
CC		 529 return ec_write(0x83, value);
530 break;
745a5d21
CC		 531 }
532 default:
08237974 533 return AE_ERROR;
745a5d21
CC		 534 }
535
536 /* Actually do the set */
537 return wmab_execute(&args, NULL);
538}
539
540static acpi_status AMW0_find_mailled(void)
541{
542 struct wmab_args args;
543 struct wmab_ret ret;
544 acpi_status status = AE_OK;
545 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
546 union acpi_object *obj;
547
548 args.eax = 0x86;
549 args.ebx = args.ecx = args.edx = 0;
550
551 status = wmab_execute(&args, &out);
552 if (ACPI_FAILURE(status))
553 return status;
554
555 obj = (union acpi_object *) out.pointer;
556 if (obj && obj->type == ACPI_TYPE_BUFFER &&
557 obj->buffer.length == sizeof(struct wmab_ret)) {
558 ret = *((struct wmab_ret *) obj->buffer.pointer);
559 } else {
560 return AE_ERROR;
561 }
562
563 if (ret.eex & 0x1)
564 interface->capability |= ACER_CAP_MAILLED;
565
566 kfree(out.pointer);
567
568 return AE_OK;
569}
570
571static acpi_status AMW0_set_capabilities(void)
572{
573 struct wmab_args args;
574 struct wmab_ret ret;
575 acpi_status status = AE_OK;
576 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
577 union acpi_object *obj;
578
5753dd53
CC		 579 /*
580 * On laptops with this strange GUID (non Acer), normal probing doesn't
581 * work.
582 */
583 if (wmi_has_guid(AMW0_GUID2)) {
584 interface->capability |= ACER_CAP_WIRELESS;
585 return AE_OK;
586 }
587
745a5d21
CC		 588 args.eax = ACER_AMW0_WRITE;
589 args.ecx = args.edx = 0;
590
591 args.ebx = 0xa2 << 8;
592 args.ebx |= ACER_AMW0_WIRELESS_MASK;
593
594 status = wmab_execute(&args, &out);
595 if (ACPI_FAILURE(status))
596 return status;
597
598 obj = (union acpi_object *) out.pointer;
599 if (obj && obj->type == ACPI_TYPE_BUFFER &&
600 obj->buffer.length == sizeof(struct wmab_ret)) {
601 ret = *((struct wmab_ret *) obj->buffer.pointer);
602 } else {
603 return AE_ERROR;
604 }
605
606 if (ret.eax & 0x1)
607 interface->capability |= ACER_CAP_WIRELESS;
608
609 args.ebx = 2 << 8;
610 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
611
612 status = wmab_execute(&args, &out);
613 if (ACPI_FAILURE(status))
614 return status;
615
616 obj = (union acpi_object *) out.pointer;
617 if (obj && obj->type == ACPI_TYPE_BUFFER
618 && obj->buffer.length == sizeof(struct wmab_ret)) {
619 ret = *((struct wmab_ret *) obj->buffer.pointer);
620 } else {
621 return AE_ERROR;
622 }
623
624 if (ret.eax & 0x1)
625 interface->capability |= ACER_CAP_BLUETOOTH;
626
627 kfree(out.pointer);
628
629 /*
630 * This appears to be safe to enable, since all Wistron based laptops
631 * appear to use the same EC register for brightness, even if they
632 * differ for wireless, etc
633 */
9991d9f2
CC		 634 if (quirks->brightness >= 0)
635 interface->capability |= ACER_CAP_BRIGHTNESS;
745a5d21
CC		 636
637 return AE_OK;
638}
639
640static struct wmi_interface AMW0_interface = {
641 .type = ACER_AMW0,
642};
643
644static struct wmi_interface AMW0_V2_interface = {
645 .type = ACER_AMW0_V2,
646};
647
648/*
649 * New interface (The WMID interface)
650 */
651static acpi_status
652WMI_execute_u32(u32 method_id, u32 in, u32 *out)
653{
654 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
655 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
656 union acpi_object *obj;
657 u32 tmp;
658 acpi_status status;
659
660 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
661
662 if (ACPI_FAILURE(status))
663 return status;
664
665 obj = (union acpi_object *) result.pointer;
666 if (obj && obj->type == ACPI_TYPE_BUFFER &&
667 obj->buffer.length == sizeof(u32)) {
668 tmp = *((u32 *) obj->buffer.pointer);
669 } else {
670 tmp = 0;
671 }
672
673 if (out)
674 *out = tmp;
675
676 kfree(result.pointer);
677
678 return status;
679}
680
681static acpi_status WMID_get_u32(u32 *value, u32 cap,
682struct wmi_interface *iface)
683{
684 acpi_status status;
685 u8 tmp;
686 u32 result, method_id = 0;
687
688 switch (cap) {
689 case ACER_CAP_WIRELESS:
690 method_id = ACER_WMID_GET_WIRELESS_METHODID;
691 break;
692 case ACER_CAP_BLUETOOTH:
693 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
694 break;
695 case ACER_CAP_BRIGHTNESS:
696 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
697 break;
698 case ACER_CAP_THREEG:
699 method_id = ACER_WMID_GET_THREEG_METHODID;
700 break;
701 case ACER_CAP_MAILLED:
702 if (quirks->mailled == 1) {
703 ec_read(0x9f, &tmp);
704 *value = tmp & 0x1;
705 return 0;
706 }
707 default:
08237974 708 return AE_ERROR;
745a5d21
CC		 709 }
710 status = WMI_execute_u32(method_id, 0, &result);
711
712 if (ACPI_SUCCESS(status))
713 *value = (u8)result;
714
715 return status;
716}
717
718static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
719{
720 u32 method_id = 0;
721 char param;
722
723 switch (cap) {
724 case ACER_CAP_BRIGHTNESS:
725 if (value > max_brightness)
726 return AE_BAD_PARAMETER;
727 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
728 break;
729 case ACER_CAP_WIRELESS:
730 if (value > 1)
731 return AE_BAD_PARAMETER;
732 method_id = ACER_WMID_SET_WIRELESS_METHODID;
733 break;
734 case ACER_CAP_BLUETOOTH:
735 if (value > 1)
736 return AE_BAD_PARAMETER;
737 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
738 break;
739 case ACER_CAP_THREEG:
740 if (value > 1)
741 return AE_BAD_PARAMETER;
742 method_id = ACER_WMID_SET_THREEG_METHODID;
743 break;
744 case ACER_CAP_MAILLED:
745 if (value > 1)
746 return AE_BAD_PARAMETER;
747 if (quirks->mailled == 1) {
748 param = value ? 0x92 : 0x93;
181d683d 749 i8042_lock_chip();
745a5d21 750 i8042_command(&param, 0x1059);
181d683d 751 i8042_unlock_chip();
745a5d21
CC		 752 return 0;
753 }
754 break;
755 default:
08237974 756 return AE_ERROR;
745a5d21
CC		 757 }
758 return WMI_execute_u32(method_id, (u32)value, NULL);
759}
760
761static acpi_status WMID_set_capabilities(void)
762{
763 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
764 union acpi_object *obj;
765 acpi_status status;
766 u32 devices;
767
768 status = wmi_query_block(WMID_GUID2, 1, &out);
769 if (ACPI_FAILURE(status))
770 return status;
771
772 obj = (union acpi_object *) out.pointer;
773 if (obj && obj->type == ACPI_TYPE_BUFFER &&
774 obj->buffer.length == sizeof(u32)) {
775 devices = *((u32 *) obj->buffer.pointer);
776 } else {
777 return AE_ERROR;
778 }
779
780 /* Not sure on the meaning of the relevant bits yet to detect these */
781 interface->capability |= ACER_CAP_WIRELESS;
782 interface->capability |= ACER_CAP_THREEG;
783
784 /* WMID always provides brightness methods */
785 interface->capability |= ACER_CAP_BRIGHTNESS;
786
787 if (devices & 0x10)
788 interface->capability |= ACER_CAP_BLUETOOTH;
789
790 if (!(devices & 0x20))
791 max_brightness = 0x9;
792
793 return status;
794}
795
796static struct wmi_interface wmid_interface = {
797 .type = ACER_WMID,
798};
799
800/*
801 * Generic Device (interface-independent)
802 */
803
804static acpi_status get_u32(u32 *value, u32 cap)
805{
08237974 806 acpi_status status = AE_ERROR;
745a5d21
CC		 807
808 switch (interface->type) {
809 case ACER_AMW0:
810 status = AMW0_get_u32(value, cap, interface);
811 break;
812 case ACER_AMW0_V2:
813 if (cap == ACER_CAP_MAILLED) {
814 status = AMW0_get_u32(value, cap, interface);
815 break;
816 }
817 case ACER_WMID:
818 status = WMID_get_u32(value, cap, interface);
819 break;
820 }
821
822 return status;
823}
824
825static acpi_status set_u32(u32 value, u32 cap)
826{
5c742b45
CC		 827 acpi_status status;
828
745a5d21
CC		 829 if (interface->capability & cap) {
830 switch (interface->type) {
831 case ACER_AMW0:
832 return AMW0_set_u32(value, cap, interface);
833 case ACER_AMW0_V2:
5c742b45
CC		 834 if (cap == ACER_CAP_MAILLED)
835 return AMW0_set_u32(value, cap, interface);
836
837 /*
838 * On some models, some WMID methods don't toggle
839 * properly. For those cases, we want to run the AMW0
840 * method afterwards to be certain we've really toggled
841 * the device state.
842 */
843 if (cap == ACER_CAP_WIRELESS ||
844 cap == ACER_CAP_BLUETOOTH) {
845 status = WMID_set_u32(value, cap, interface);
846 if (ACPI_FAILURE(status))
847 return status;
848
849 return AMW0_set_u32(value, cap, interface);
850 }
745a5d21
CC		 851 case ACER_WMID:
852 return WMID_set_u32(value, cap, interface);
853 default:
854 return AE_BAD_PARAMETER;
855 }
856 }
857 return AE_BAD_PARAMETER;
858}
859
860static void __init acer_commandline_init(void)
861{
862 /*
863 * These will all fail silently if the value given is invalid, or the
864 * capability isn't available on the given interface
865 */
866 set_u32(mailled, ACER_CAP_MAILLED);
745a5d21
CC		 867 set_u32(threeg, ACER_CAP_THREEG);
868 set_u32(brightness, ACER_CAP_BRIGHTNESS);
869}
870
871/*
872 * LED device (Mail LED only, no other LEDs known yet)
873 */
874static void mail_led_set(struct led_classdev *led_cdev,
875enum led_brightness value)
876{
877 set_u32(value, ACER_CAP_MAILLED);
878}
879
880static struct led_classdev mail_led = {
343c0042 881 .name = "acer-wmi::mail",
745a5d21
CC		 882 .brightness_set = mail_led_set,
883};
884
7560e385 885static int __devinit acer_led_init(struct device *dev)
745a5d21
CC		 886{
887 return led_classdev_register(dev, &mail_led);
888}
889
890static void acer_led_exit(void)
891{
892 led_classdev_unregister(&mail_led);
893}
894
895/*
896 * Backlight device
897 */
898static struct backlight_device *acer_backlight_device;
899
900static int read_brightness(struct backlight_device *bd)
901{
902 u32 value;
903 get_u32(&value, ACER_CAP_BRIGHTNESS);
904 return value;
905}
906
907static int update_bl_status(struct backlight_device *bd)
908{
f2b585b4
CC		 909 int intensity = bd->props.brightness;
910
911 if (bd->props.power != FB_BLANK_UNBLANK)
912 intensity = 0;
913 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
914 intensity = 0;
915
916 set_u32(intensity, ACER_CAP_BRIGHTNESS);
917
745a5d21
CC		 918 return 0;
919}
920
921static struct backlight_ops acer_bl_ops = {
922 .get_brightness = read_brightness,
923 .update_status = update_bl_status,
924};
925
7560e385 926static int __devinit acer_backlight_init(struct device *dev)
745a5d21
CC		 927{
928 struct backlight_device *bd;
929
930 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops);
931 if (IS_ERR(bd)) {
932 printk(ACER_ERR "Could not register Acer backlight device\n");
933 acer_backlight_device = NULL;
934 return PTR_ERR(bd);
935 }
936
937 acer_backlight_device = bd;
938
f2b585b4
CC		 939 bd->props.power = FB_BLANK_UNBLANK;
940 bd->props.brightness = max_brightness;
745a5d21 941 bd->props.max_brightness = max_brightness;
745a5d21
CC		 942 backlight_update_status(bd);
943 return 0;
944}
945
7560e385 946static void acer_backlight_exit(void)
745a5d21
CC		 947{
948 backlight_device_unregister(acer_backlight_device);
949}
950
0606e1ab
CC		 951/*
952 * Rfkill devices
953 */
0606e1ab
CC		 954static void acer_rfkill_update(struct work_struct *ignored);
955static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
956static void acer_rfkill_update(struct work_struct *ignored)
957{
958 u32 state;
959 acpi_status status;
960
961 status = get_u32(&state, ACER_CAP_WIRELESS);
962 if (ACPI_SUCCESS(status))
a878417c 963 rfkill_set_sw_state(wireless_rfkill, !state);
0606e1ab
CC		 964
965 if (has_cap(ACER_CAP_BLUETOOTH)) {
966 status = get_u32(&state, ACER_CAP_BLUETOOTH);
967 if (ACPI_SUCCESS(status))
a878417c 968 rfkill_set_sw_state(bluetooth_rfkill, !state);
0606e1ab
CC		 969 }
970
ae3a1b46 971 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
0606e1ab
CC		 972}
973
19d337df 974static int acer_rfkill_set(void *data, bool blocked)
0606e1ab
CC		 975{
976 acpi_status status;
19d337df 977 u32 cap = (unsigned long)data;
ed5c8ef3 978 status = set_u32(!blocked, cap);
0606e1ab
CC		 979 if (ACPI_FAILURE(status))
980 return -ENODEV;
981 return 0;
982}
983
19d337df
JB		 984static const struct rfkill_ops acer_rfkill_ops = {
985 .set_block = acer_rfkill_set,
986};
987
988static struct rfkill *acer_rfkill_register(struct device *dev,
989 enum rfkill_type type,
990 char *name, u32 cap)
0606e1ab
CC		 991{
992 int err;
0606e1ab
CC		 993 struct rfkill *rfkill_dev;
994
19d337df
JB		 995 rfkill_dev = rfkill_alloc(name, dev, type,
996 &acer_rfkill_ops,
997 (void *)(unsigned long)cap);
0606e1ab
CC		 998 if (!rfkill_dev)
999 return ERR_PTR(-ENOMEM);
0606e1ab
CC		 1000
1001 err = rfkill_register(rfkill_dev);
1002 if (err) {
19d337df 1003 rfkill_destroy(rfkill_dev);
0606e1ab
CC		 1004 return ERR_PTR(err);
1005 }
1006 return rfkill_dev;
1007}
1008
1009static int acer_rfkill_init(struct device *dev)
1010{
1011 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1012 "acer-wireless", ACER_CAP_WIRELESS);
1013 if (IS_ERR(wireless_rfkill))
1014 return PTR_ERR(wireless_rfkill);
1015
1016 if (has_cap(ACER_CAP_BLUETOOTH)) {
1017 bluetooth_rfkill = acer_rfkill_register(dev,
1018 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1019 ACER_CAP_BLUETOOTH);
1020 if (IS_ERR(bluetooth_rfkill)) {
0606e1ab 1021 rfkill_unregister(wireless_rfkill);
19d337df 1022 rfkill_destroy(wireless_rfkill);
0606e1ab
CC		 1023 return PTR_ERR(bluetooth_rfkill);
1024 }
1025 }
1026
ae3a1b46 1027 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
0606e1ab
CC		 1028
1029 return 0;
1030}
1031
1032static void acer_rfkill_exit(void)
1033{
1034 cancel_delayed_work_sync(&acer_rfkill_work);
19d337df 1035
0606e1ab 1036 rfkill_unregister(wireless_rfkill);
19d337df
JB		 1037 rfkill_destroy(wireless_rfkill);
1038
0606e1ab 1039 if (has_cap(ACER_CAP_BLUETOOTH)) {
0606e1ab 1040 rfkill_unregister(bluetooth_rfkill);
19d337df 1041 rfkill_destroy(bluetooth_rfkill);
0606e1ab
CC		 1042 }
1043 return;
1044}
1045
745a5d21 1046/*
7d9a06de 1047 * sysfs interface
745a5d21 1048 */
7d9a06de
CC		 1049static ssize_t show_bool_threeg(struct device *dev,
1050 struct device_attribute *attr, char *buf)
1051{
745a5d21 1052 u32 result; \
7d9a06de
CC		 1053 acpi_status status = get_u32(&result, ACER_CAP_THREEG);
1054 if (ACPI_SUCCESS(status))
1055 return sprintf(buf, "%u\n", result);
1056 return sprintf(buf, "Read error\n");
1057}
1058
1059static ssize_t set_bool_threeg(struct device *dev,
1060 struct device_attribute *attr, const char *buf, size_t count)
1061{
1062 u32 tmp = simple_strtoul(buf, NULL, 10);
1063 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1064 if (ACPI_FAILURE(status))
1065 return -EINVAL;
1066 return count;
1067}
1068static DEVICE_ATTR(threeg, S_IWUGO | S_IRUGO | S_IWUSR, show_bool_threeg,
1069 set_bool_threeg);
745a5d21 1070
745a5d21
CC		 1071static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1072 char *buf)
1073{
1074 switch (interface->type) {
1075 case ACER_AMW0:
1076 return sprintf(buf, "AMW0\n");
1077 case ACER_AMW0_V2:
1078 return sprintf(buf, "AMW0 v2\n");
1079 case ACER_WMID:
1080 return sprintf(buf, "WMID\n");
1081 default:
1082 return sprintf(buf, "Error!\n");
1083 }
1084}
1085
1086static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
1087 show_interface, NULL);
1088
81143522
CC		 1089/*
1090 * debugfs functions
1091 */
1092static u32 get_wmid_devices(void)
1093{
1094 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1095 union acpi_object *obj;
1096 acpi_status status;
1097
1098 status = wmi_query_block(WMID_GUID2, 1, &out);
1099 if (ACPI_FAILURE(status))
1100 return 0;
1101
1102 obj = (union acpi_object *) out.pointer;
1103 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1104 obj->buffer.length == sizeof(u32)) {
1105 return *((u32 *) obj->buffer.pointer);
1106 } else {
1107 return 0;
1108 }
1109}
1110
745a5d21
CC		 1111/*
1112 * Platform device
1113 */
1114static int __devinit acer_platform_probe(struct platform_device *device)
1115{
1116 int err;
1117
1118 if (has_cap(ACER_CAP_MAILLED)) {
1119 err = acer_led_init(&device->dev);
1120 if (err)
1121 goto error_mailled;
1122 }
1123
1124 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1125 err = acer_backlight_init(&device->dev);
1126 if (err)
1127 goto error_brightness;
1128 }
1129
0606e1ab 1130 err = acer_rfkill_init(&device->dev);
350e3290
AW		 1131 if (err)
1132 goto error_rfkill;
0606e1ab
CC		 1133
1134 return err;
745a5d21 1135
350e3290
AW		 1136error_rfkill:
1137 if (has_cap(ACER_CAP_BRIGHTNESS))
1138 acer_backlight_exit();
745a5d21 1139error_brightness:
350e3290
AW		 1140 if (has_cap(ACER_CAP_MAILLED))
1141 acer_led_exit();
745a5d21
CC		 1142error_mailled:
1143 return err;
1144}
1145
1146static int acer_platform_remove(struct platform_device *device)
1147{
1148 if (has_cap(ACER_CAP_MAILLED))
1149 acer_led_exit();
1150 if (has_cap(ACER_CAP_BRIGHTNESS))
1151 acer_backlight_exit();
0606e1ab
CC		 1152
1153 acer_rfkill_exit();
745a5d21
CC		 1154 return 0;
1155}
1156
1157static int acer_platform_suspend(struct platform_device *dev,
1158pm_message_t state)
1159{
1160 u32 value;
1161 struct acer_data *data = &interface->data;
1162
1163 if (!data)
1164 return -ENOMEM;
1165
745a5d21
CC		 1166 if (has_cap(ACER_CAP_MAILLED)) {
1167 get_u32(&value, ACER_CAP_MAILLED);
1168 data->mailled = value;
1169 }
1170
1171 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1172 get_u32(&value, ACER_CAP_BRIGHTNESS);
1173 data->brightness = value;
1174 }
1175
1176 return 0;
1177}
1178
1179static int acer_platform_resume(struct platform_device *device)
1180{
1181 struct acer_data *data = &interface->data;
1182
1183 if (!data)
1184 return -ENOMEM;
1185
745a5d21
CC		 1186 if (has_cap(ACER_CAP_MAILLED))
1187 set_u32(data->mailled, ACER_CAP_MAILLED);
1188
1189 if (has_cap(ACER_CAP_BRIGHTNESS))
1190 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1191
1192 return 0;
1193}
1194
1195static struct platform_driver acer_platform_driver = {
1196 .driver = {
1197 .name = "acer-wmi",
1198 .owner = THIS_MODULE,
1199 },
1200 .probe = acer_platform_probe,
1201 .remove = acer_platform_remove,
1202 .suspend = acer_platform_suspend,
1203 .resume = acer_platform_resume,
1204};
1205
1206static struct platform_device *acer_platform_device;
1207
1208static int remove_sysfs(struct platform_device *device)
1209{
745a5d21
CC		 1210 if (has_cap(ACER_CAP_THREEG))
1211 device_remove_file(&device->dev, &dev_attr_threeg);
1212
1213 device_remove_file(&device->dev, &dev_attr_interface);
1214
1215 return 0;
1216}
1217
1218static int create_sysfs(void)
1219{
1220 int retval = -ENOMEM;
1221
745a5d21
CC		 1222 if (has_cap(ACER_CAP_THREEG)) {
1223 retval = device_create_file(&acer_platform_device->dev,
1224 &dev_attr_threeg);
1225 if (retval)
1226 goto error_sysfs;
1227 }
1228
1229 retval = device_create_file(&acer_platform_device->dev,
1230 &dev_attr_interface);
1231 if (retval)
1232 goto error_sysfs;
1233
1234 return 0;
1235
1236error_sysfs:
1237 remove_sysfs(acer_platform_device);
1238 return retval;
1239}
1240
81143522
CC		 1241static void remove_debugfs(void)
1242{
1243 debugfs_remove(interface->debug.devices);
1244 debugfs_remove(interface->debug.root);
1245}
1246
1247static int create_debugfs(void)
1248{
1249 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1250 if (!interface->debug.root) {
1251 printk(ACER_ERR "Failed to create debugfs directory");
1252 return -ENOMEM;
1253 }
1254
1255 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1256 interface->debug.root,
1257 &interface->debug.wmid_devices);
1258 if (!interface->debug.devices)
1259 goto error_debugfs;
1260
1261 return 0;
1262
1263error_debugfs:
39dbbb45 1264 remove_debugfs();
81143522
CC		 1265 return -ENOMEM;
1266}
1267
745a5d21
CC		 1268static int __init acer_wmi_init(void)
1269{
1270 int err;
1271
860f0c6b 1272 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
745a5d21 1273
a74dd5fd
CC		 1274 if (dmi_check_system(acer_blacklist)) {
1275 printk(ACER_INFO "Blacklisted hardware detected - "
1276 "not loading\n");
1277 return -ENODEV;
1278 }
1279
9991d9f2
CC		 1280 find_quirks();
1281
745a5d21
CC		 1282 /*
1283 * Detect which ACPI-WMI interface we're using.
1284 */
1285 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1286 interface = &AMW0_V2_interface;
1287
1288 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1289 interface = &wmid_interface;
1290
1291 if (wmi_has_guid(WMID_GUID2) && interface) {
1292 if (ACPI_FAILURE(WMID_set_capabilities())) {
8d039bc7
CC		 1293 printk(ACER_ERR "Unable to detect available WMID "
1294 "devices\n");
745a5d21
CC		 1295 return -ENODEV;
1296 }
1297 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
8d039bc7 1298 printk(ACER_ERR "No WMID device detection method found\n");
745a5d21
CC		 1299 return -ENODEV;
1300 }
1301
1302 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1303 interface = &AMW0_interface;
1304
1305 if (ACPI_FAILURE(AMW0_set_capabilities())) {
8d039bc7
CC		 1306 printk(ACER_ERR "Unable to detect available AMW0 "
1307 "devices\n");
745a5d21
CC		 1308 return -ENODEV;
1309 }
1310 }
1311
9b963c40
CC		 1312 if (wmi_has_guid(AMW0_GUID1))
1313 AMW0_find_mailled();
745a5d21 1314
745a5d21 1315 if (!interface) {
8d039bc7
CC		 1316 printk(ACER_ERR "No or unsupported WMI interface, unable to "
1317 "load\n");
745a5d21
CC		 1318 return -ENODEV;
1319 }
1320
83097aca
AV		 1321 set_quirks();
1322
1ba869ec 1323 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
febf2d95
TR		 1324 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1325 printk(ACER_INFO "Brightness must be controlled by "
1326 "generic video driver\n");
1327 }
1328
745a5d21
CC		 1329 if (platform_driver_register(&acer_platform_driver)) {
1330 printk(ACER_ERR "Unable to register platform driver.\n");
1331 goto error_platform_register;
1332 }
1333 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1334 platform_device_add(acer_platform_device);
1335
1336 err = create_sysfs();
1337 if (err)
1338 return err;
1339
81143522
CC		 1340 if (wmi_has_guid(WMID_GUID2)) {
1341 interface->debug.wmid_devices = get_wmid_devices();
1342 err = create_debugfs();
1343 if (err)
1344 return err;
1345 }
1346
745a5d21
CC		 1347 /* Override any initial settings with values from the commandline */
1348 acer_commandline_init();
1349
1350 return 0;
1351
1352error_platform_register:
1353 return -ENODEV;
1354}
1355
1356static void __exit acer_wmi_exit(void)
1357{
1358 remove_sysfs(acer_platform_device);
39dbbb45 1359 remove_debugfs();
745a5d21
CC		 1360 platform_device_del(acer_platform_device);
1361 platform_driver_unregister(&acer_platform_driver);
1362
1363 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1364 return;
1365}
1366
1367module_init(acer_wmi_init);
1368module_exit(acer_wmi_exit);
kernel source for telekom puls (alcatel/mediatek)