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rfkill: rewrite
[deliverable/linux.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;
749 i8042_command(&param, 0x1059);
750 return 0;
751 }
752 break;
753 default:
08237974 754 return AE_ERROR;
745a5d21
CC		 755 }
756 return WMI_execute_u32(method_id, (u32)value, NULL);
757}
758
759static acpi_status WMID_set_capabilities(void)
760{
761 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
762 union acpi_object *obj;
763 acpi_status status;
764 u32 devices;
765
766 status = wmi_query_block(WMID_GUID2, 1, &out);
767 if (ACPI_FAILURE(status))
768 return status;
769
770 obj = (union acpi_object *) out.pointer;
771 if (obj && obj->type == ACPI_TYPE_BUFFER &&
772 obj->buffer.length == sizeof(u32)) {
773 devices = *((u32 *) obj->buffer.pointer);
774 } else {
775 return AE_ERROR;
776 }
777
778 /* Not sure on the meaning of the relevant bits yet to detect these */
779 interface->capability |= ACER_CAP_WIRELESS;
780 interface->capability |= ACER_CAP_THREEG;
781
782 /* WMID always provides brightness methods */
783 interface->capability |= ACER_CAP_BRIGHTNESS;
784
785 if (devices & 0x10)
786 interface->capability |= ACER_CAP_BLUETOOTH;
787
788 if (!(devices & 0x20))
789 max_brightness = 0x9;
790
791 return status;
792}
793
794static struct wmi_interface wmid_interface = {
795 .type = ACER_WMID,
796};
797
798/*
799 * Generic Device (interface-independent)
800 */
801
802static acpi_status get_u32(u32 *value, u32 cap)
803{
08237974 804 acpi_status status = AE_ERROR;
745a5d21
CC		 805
806 switch (interface->type) {
807 case ACER_AMW0:
808 status = AMW0_get_u32(value, cap, interface);
809 break;
810 case ACER_AMW0_V2:
811 if (cap == ACER_CAP_MAILLED) {
812 status = AMW0_get_u32(value, cap, interface);
813 break;
814 }
815 case ACER_WMID:
816 status = WMID_get_u32(value, cap, interface);
817 break;
818 }
819
820 return status;
821}
822
823static acpi_status set_u32(u32 value, u32 cap)
824{
5c742b45
CC		 825 acpi_status status;
826
745a5d21
CC		 827 if (interface->capability & cap) {
828 switch (interface->type) {
829 case ACER_AMW0:
830 return AMW0_set_u32(value, cap, interface);
831 case ACER_AMW0_V2:
5c742b45
CC		 832 if (cap == ACER_CAP_MAILLED)
833 return AMW0_set_u32(value, cap, interface);
834
835 /*
836 * On some models, some WMID methods don't toggle
837 * properly. For those cases, we want to run the AMW0
838 * method afterwards to be certain we've really toggled
839 * the device state.
840 */
841 if (cap == ACER_CAP_WIRELESS ||
842 cap == ACER_CAP_BLUETOOTH) {
843 status = WMID_set_u32(value, cap, interface);
844 if (ACPI_FAILURE(status))
845 return status;
846
847 return AMW0_set_u32(value, cap, interface);
848 }
745a5d21
CC		 849 case ACER_WMID:
850 return WMID_set_u32(value, cap, interface);
851 default:
852 return AE_BAD_PARAMETER;
853 }
854 }
855 return AE_BAD_PARAMETER;
856}
857
858static void __init acer_commandline_init(void)
859{
860 /*
861 * These will all fail silently if the value given is invalid, or the
862 * capability isn't available on the given interface
863 */
864 set_u32(mailled, ACER_CAP_MAILLED);
745a5d21
CC		 865 set_u32(threeg, ACER_CAP_THREEG);
866 set_u32(brightness, ACER_CAP_BRIGHTNESS);
867}
868
869/*
870 * LED device (Mail LED only, no other LEDs known yet)
871 */
872static void mail_led_set(struct led_classdev *led_cdev,
873enum led_brightness value)
874{
875 set_u32(value, ACER_CAP_MAILLED);
876}
877
878static struct led_classdev mail_led = {
343c0042 879 .name = "acer-wmi::mail",
745a5d21
CC		 880 .brightness_set = mail_led_set,
881};
882
7560e385 883static int __devinit acer_led_init(struct device *dev)
745a5d21
CC		 884{
885 return led_classdev_register(dev, &mail_led);
886}
887
888static void acer_led_exit(void)
889{
890 led_classdev_unregister(&mail_led);
891}
892
893/*
894 * Backlight device
895 */
896static struct backlight_device *acer_backlight_device;
897
898static int read_brightness(struct backlight_device *bd)
899{
900 u32 value;
901 get_u32(&value, ACER_CAP_BRIGHTNESS);
902 return value;
903}
904
905static int update_bl_status(struct backlight_device *bd)
906{
f2b585b4
CC		 907 int intensity = bd->props.brightness;
908
909 if (bd->props.power != FB_BLANK_UNBLANK)
910 intensity = 0;
911 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
912 intensity = 0;
913
914 set_u32(intensity, ACER_CAP_BRIGHTNESS);
915
745a5d21
CC		 916 return 0;
917}
918
919static struct backlight_ops acer_bl_ops = {
920 .get_brightness = read_brightness,
921 .update_status = update_bl_status,
922};
923
7560e385 924static int __devinit acer_backlight_init(struct device *dev)
745a5d21
CC		 925{
926 struct backlight_device *bd;
927
928 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops);
929 if (IS_ERR(bd)) {
930 printk(ACER_ERR "Could not register Acer backlight device\n");
931 acer_backlight_device = NULL;
932 return PTR_ERR(bd);
933 }
934
935 acer_backlight_device = bd;
936
f2b585b4
CC		 937 bd->props.power = FB_BLANK_UNBLANK;
938 bd->props.brightness = max_brightness;
745a5d21 939 bd->props.max_brightness = max_brightness;
745a5d21
CC		 940 backlight_update_status(bd);
941 return 0;
942}
943
7560e385 944static void acer_backlight_exit(void)
745a5d21
CC		 945{
946 backlight_device_unregister(acer_backlight_device);
947}
948
0606e1ab
CC		 949/*
950 * Rfkill devices
951 */
0606e1ab
CC		 952static void acer_rfkill_update(struct work_struct *ignored);
953static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
954static void acer_rfkill_update(struct work_struct *ignored)
955{
956 u32 state;
957 acpi_status status;
958
959 status = get_u32(&state, ACER_CAP_WIRELESS);
960 if (ACPI_SUCCESS(status))
19d337df 961 rfkill_set_sw_state(wireless_rfkill, !!state);
0606e1ab
CC		 962
963 if (has_cap(ACER_CAP_BLUETOOTH)) {
964 status = get_u32(&state, ACER_CAP_BLUETOOTH);
965 if (ACPI_SUCCESS(status))
19d337df 966 rfkill_set_sw_state(bluetooth_rfkill, !!state);
0606e1ab
CC		 967 }
968
ae3a1b46 969 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
0606e1ab
CC		 970}
971
19d337df 972static int acer_rfkill_set(void *data, bool blocked)
0606e1ab
CC		 973{
974 acpi_status status;
19d337df
JB		 975 u32 cap = (unsigned long)data;
976 status = set_u32(!!blocked, cap);
0606e1ab
CC		 977 if (ACPI_FAILURE(status))
978 return -ENODEV;
979 return 0;
980}
981
19d337df
JB		 982static const struct rfkill_ops acer_rfkill_ops = {
983 .set_block = acer_rfkill_set,
984};
985
986static struct rfkill *acer_rfkill_register(struct device *dev,
987 enum rfkill_type type,
988 char *name, u32 cap)
0606e1ab
CC		 989{
990 int err;
991 u32 state;
0606e1ab
CC		 992 struct rfkill *rfkill_dev;
993
19d337df
JB		 994 rfkill_dev = rfkill_alloc(name, dev, type,
995 &acer_rfkill_ops,
996 (void *)(unsigned long)cap);
0606e1ab
CC		 997 if (!rfkill_dev)
998 return ERR_PTR(-ENOMEM);
0606e1ab 999 get_u32(&state, cap);
19d337df 1000 rfkill_set_sw_state(rfkill_dev, !state);
0606e1ab
CC		 1001
1002 err = rfkill_register(rfkill_dev);
1003 if (err) {
19d337df 1004 rfkill_destroy(rfkill_dev);
0606e1ab
CC		 1005 return ERR_PTR(err);
1006 }
1007 return rfkill_dev;
1008}
1009
1010static int acer_rfkill_init(struct device *dev)
1011{
1012 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1013 "acer-wireless", ACER_CAP_WIRELESS);
1014 if (IS_ERR(wireless_rfkill))
1015 return PTR_ERR(wireless_rfkill);
1016
1017 if (has_cap(ACER_CAP_BLUETOOTH)) {
1018 bluetooth_rfkill = acer_rfkill_register(dev,
1019 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1020 ACER_CAP_BLUETOOTH);
1021 if (IS_ERR(bluetooth_rfkill)) {
0606e1ab 1022 rfkill_unregister(wireless_rfkill);
19d337df 1023 rfkill_destroy(wireless_rfkill);
0606e1ab
CC		 1024 return PTR_ERR(bluetooth_rfkill);
1025 }
1026 }
1027
ae3a1b46 1028 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
0606e1ab
CC		 1029
1030 return 0;
1031}
1032
1033static void acer_rfkill_exit(void)
1034{
1035 cancel_delayed_work_sync(&acer_rfkill_work);
19d337df 1036
0606e1ab 1037 rfkill_unregister(wireless_rfkill);
19d337df
JB		 1038 rfkill_destroy(wireless_rfkill);
1039
0606e1ab 1040 if (has_cap(ACER_CAP_BLUETOOTH)) {
0606e1ab 1041 rfkill_unregister(bluetooth_rfkill);
19d337df 1042 rfkill_destroy(bluetooth_rfkill);
0606e1ab
CC		 1043 }
1044 return;
1045}
1046
745a5d21 1047/*
7d9a06de 1048 * sysfs interface
745a5d21 1049 */
7d9a06de
CC		 1050static ssize_t show_bool_threeg(struct device *dev,
1051 struct device_attribute *attr, char *buf)
1052{
745a5d21 1053 u32 result; \
7d9a06de
CC		 1054 acpi_status status = get_u32(&result, ACER_CAP_THREEG);
1055 if (ACPI_SUCCESS(status))
1056 return sprintf(buf, "%u\n", result);
1057 return sprintf(buf, "Read error\n");
1058}
1059
1060static ssize_t set_bool_threeg(struct device *dev,
1061 struct device_attribute *attr, const char *buf, size_t count)
1062{
1063 u32 tmp = simple_strtoul(buf, NULL, 10);
1064 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1065 if (ACPI_FAILURE(status))
1066 return -EINVAL;
1067 return count;
1068}
1069static DEVICE_ATTR(threeg, S_IWUGO | S_IRUGO | S_IWUSR, show_bool_threeg,
1070 set_bool_threeg);
745a5d21 1071
745a5d21
CC		 1072static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1073 char *buf)
1074{
1075 switch (interface->type) {
1076 case ACER_AMW0:
1077 return sprintf(buf, "AMW0\n");
1078 case ACER_AMW0_V2:
1079 return sprintf(buf, "AMW0 v2\n");
1080 case ACER_WMID:
1081 return sprintf(buf, "WMID\n");
1082 default:
1083 return sprintf(buf, "Error!\n");
1084 }
1085}
1086
1087static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
1088 show_interface, NULL);
1089
81143522
CC		 1090/*
1091 * debugfs functions
1092 */
1093static u32 get_wmid_devices(void)
1094{
1095 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1096 union acpi_object *obj;
1097 acpi_status status;
1098
1099 status = wmi_query_block(WMID_GUID2, 1, &out);
1100 if (ACPI_FAILURE(status))
1101 return 0;
1102
1103 obj = (union acpi_object *) out.pointer;
1104 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1105 obj->buffer.length == sizeof(u32)) {
1106 return *((u32 *) obj->buffer.pointer);
1107 } else {
1108 return 0;
1109 }
1110}
1111
745a5d21
CC		 1112/*
1113 * Platform device
1114 */
1115static int __devinit acer_platform_probe(struct platform_device *device)
1116{
1117 int err;
1118
1119 if (has_cap(ACER_CAP_MAILLED)) {
1120 err = acer_led_init(&device->dev);
1121 if (err)
1122 goto error_mailled;
1123 }
1124
1125 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1126 err = acer_backlight_init(&device->dev);
1127 if (err)
1128 goto error_brightness;
1129 }
1130
0606e1ab 1131 err = acer_rfkill_init(&device->dev);
350e3290
AW		 1132 if (err)
1133 goto error_rfkill;
0606e1ab
CC		 1134
1135 return err;
745a5d21 1136
350e3290
AW		 1137error_rfkill:
1138 if (has_cap(ACER_CAP_BRIGHTNESS))
1139 acer_backlight_exit();
745a5d21 1140error_brightness:
350e3290
AW		 1141 if (has_cap(ACER_CAP_MAILLED))
1142 acer_led_exit();
745a5d21
CC		 1143error_mailled:
1144 return err;
1145}
1146
1147static int acer_platform_remove(struct platform_device *device)
1148{
1149 if (has_cap(ACER_CAP_MAILLED))
1150 acer_led_exit();
1151 if (has_cap(ACER_CAP_BRIGHTNESS))
1152 acer_backlight_exit();
0606e1ab
CC		 1153
1154 acer_rfkill_exit();
745a5d21
CC		 1155 return 0;
1156}
1157
1158static int acer_platform_suspend(struct platform_device *dev,
1159pm_message_t state)
1160{
1161 u32 value;
1162 struct acer_data *data = &interface->data;
1163
1164 if (!data)
1165 return -ENOMEM;
1166
745a5d21
CC		 1167 if (has_cap(ACER_CAP_MAILLED)) {
1168 get_u32(&value, ACER_CAP_MAILLED);
1169 data->mailled = value;
1170 }
1171
1172 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1173 get_u32(&value, ACER_CAP_BRIGHTNESS);
1174 data->brightness = value;
1175 }
1176
1177 return 0;
1178}
1179
1180static int acer_platform_resume(struct platform_device *device)
1181{
1182 struct acer_data *data = &interface->data;
1183
1184 if (!data)
1185 return -ENOMEM;
1186
745a5d21
CC		 1187 if (has_cap(ACER_CAP_MAILLED))
1188 set_u32(data->mailled, ACER_CAP_MAILLED);
1189
1190 if (has_cap(ACER_CAP_BRIGHTNESS))
1191 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1192
1193 return 0;
1194}
1195
1196static struct platform_driver acer_platform_driver = {
1197 .driver = {
1198 .name = "acer-wmi",
1199 .owner = THIS_MODULE,
1200 },
1201 .probe = acer_platform_probe,
1202 .remove = acer_platform_remove,
1203 .suspend = acer_platform_suspend,
1204 .resume = acer_platform_resume,
1205};
1206
1207static struct platform_device *acer_platform_device;
1208
1209static int remove_sysfs(struct platform_device *device)
1210{
745a5d21
CC		 1211 if (has_cap(ACER_CAP_THREEG))
1212 device_remove_file(&device->dev, &dev_attr_threeg);
1213
1214 device_remove_file(&device->dev, &dev_attr_interface);
1215
1216 return 0;
1217}
1218
1219static int create_sysfs(void)
1220{
1221 int retval = -ENOMEM;
1222
745a5d21
CC		 1223 if (has_cap(ACER_CAP_THREEG)) {
1224 retval = device_create_file(&acer_platform_device->dev,
1225 &dev_attr_threeg);
1226 if (retval)
1227 goto error_sysfs;
1228 }
1229
1230 retval = device_create_file(&acer_platform_device->dev,
1231 &dev_attr_interface);
1232 if (retval)
1233 goto error_sysfs;
1234
1235 return 0;
1236
1237error_sysfs:
1238 remove_sysfs(acer_platform_device);
1239 return retval;
1240}
1241
81143522
CC		 1242static void remove_debugfs(void)
1243{
1244 debugfs_remove(interface->debug.devices);
1245 debugfs_remove(interface->debug.root);
1246}
1247
1248static int create_debugfs(void)
1249{
1250 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1251 if (!interface->debug.root) {
1252 printk(ACER_ERR "Failed to create debugfs directory");
1253 return -ENOMEM;
1254 }
1255
1256 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1257 interface->debug.root,
1258 &interface->debug.wmid_devices);
1259 if (!interface->debug.devices)
1260 goto error_debugfs;
1261
1262 return 0;
1263
1264error_debugfs:
39dbbb45 1265 remove_debugfs();
81143522
CC		 1266 return -ENOMEM;
1267}
1268
745a5d21
CC		 1269static int __init acer_wmi_init(void)
1270{
1271 int err;
1272
860f0c6b 1273 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
745a5d21 1274
a74dd5fd
CC		 1275 if (dmi_check_system(acer_blacklist)) {
1276 printk(ACER_INFO "Blacklisted hardware detected - "
1277 "not loading\n");
1278 return -ENODEV;
1279 }
1280
9991d9f2
CC		 1281 find_quirks();
1282
745a5d21
CC		 1283 /*
1284 * Detect which ACPI-WMI interface we're using.
1285 */
1286 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1287 interface = &AMW0_V2_interface;
1288
1289 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1290 interface = &wmid_interface;
1291
1292 if (wmi_has_guid(WMID_GUID2) && interface) {
1293 if (ACPI_FAILURE(WMID_set_capabilities())) {
8d039bc7
CC		 1294 printk(ACER_ERR "Unable to detect available WMID "
1295 "devices\n");
745a5d21
CC		 1296 return -ENODEV;
1297 }
1298 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
8d039bc7 1299 printk(ACER_ERR "No WMID device detection method found\n");
745a5d21
CC		 1300 return -ENODEV;
1301 }
1302
1303 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1304 interface = &AMW0_interface;
1305
1306 if (ACPI_FAILURE(AMW0_set_capabilities())) {
8d039bc7
CC		 1307 printk(ACER_ERR "Unable to detect available AMW0 "
1308 "devices\n");
745a5d21
CC		 1309 return -ENODEV;
1310 }
1311 }
1312
9b963c40
CC		 1313 if (wmi_has_guid(AMW0_GUID1))
1314 AMW0_find_mailled();
745a5d21 1315
745a5d21 1316 if (!interface) {
8d039bc7
CC		 1317 printk(ACER_ERR "No or unsupported WMI interface, unable to "
1318 "load\n");
745a5d21
CC		 1319 return -ENODEV;
1320 }
1321
83097aca
AV		 1322 set_quirks();
1323
1ba869ec 1324 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
febf2d95
TR		 1325 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1326 printk(ACER_INFO "Brightness must be controlled by "
1327 "generic video driver\n");
1328 }
1329
745a5d21
CC		 1330 if (platform_driver_register(&acer_platform_driver)) {
1331 printk(ACER_ERR "Unable to register platform driver.\n");
1332 goto error_platform_register;
1333 }
1334 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1335 platform_device_add(acer_platform_device);
1336
1337 err = create_sysfs();
1338 if (err)
1339 return err;
1340
81143522
CC		 1341 if (wmi_has_guid(WMID_GUID2)) {
1342 interface->debug.wmid_devices = get_wmid_devices();
1343 err = create_debugfs();
1344 if (err)
1345 return err;
1346 }
1347
745a5d21
CC		 1348 /* Override any initial settings with values from the commandline */
1349 acer_commandline_init();
1350
1351 return 0;
1352
1353error_platform_register:
1354 return -ENODEV;
1355}
1356
1357static void __exit acer_wmi_exit(void)
1358{
1359 remove_sysfs(acer_platform_device);
39dbbb45 1360 remove_debugfs();
745a5d21
CC		 1361 platform_device_del(acer_platform_device);
1362 platform_driver_unregister(&acer_platform_driver);
1363
1364 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1365 return;
1366}
1367
1368module_init(acer_wmi_init);
1369module_exit(acer_wmi_exit);
Linux kernel - Deliverables
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