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acer-wmi: Add rfkill support for wireless and bluetooth
[deliverable/linux.git] / drivers / misc / acer-wmi.c
CommitLineData
745a5d21
CC		 1/*
2 * Acer WMI Laptop Extras
3 *
4 * Copyright (C) 2007-2008 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
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
128static int wireless = -1;
129static int bluetooth = -1;
130static int mailled = -1;
131static int brightness = -1;
132static int threeg = -1;
133static int force_series;
134
135module_param(mailled, int, 0444);
136module_param(wireless, int, 0444);
137module_param(bluetooth, int, 0444);
138module_param(brightness, int, 0444);
139module_param(threeg, int, 0444);
140module_param(force_series, int, 0444);
141MODULE_PARM_DESC(wireless, "Set initial state of Wireless hardware");
142MODULE_PARM_DESC(bluetooth, "Set initial state of Bluetooth hardware");
143MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
144MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
145MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
146MODULE_PARM_DESC(force_series, "Force a different laptop series");
147
148struct acer_data {
149 int mailled;
150 int wireless;
151 int bluetooth;
152 int threeg;
153 int brightness;
154};
155
81143522
CC		 156struct acer_debug {
157 struct dentry *root;
158 struct dentry *devices;
159 u32 wmid_devices;
160};
161
0606e1ab
CC		 162static struct rfkill *wireless_rfkill;
163static struct rfkill *bluetooth_rfkill;
164
745a5d21
CC		 165/* Each low-level interface must define at least some of the following */
166struct wmi_interface {
167 /* The WMI device type */
168 u32 type;
169
170 /* The capabilities this interface provides */
171 u32 capability;
172
173 /* Private data for the current interface */
174 struct acer_data data;
81143522
CC		 175
176 /* debugfs entries associated with this interface */
177 struct acer_debug debug;
745a5d21
CC		 178};
179
180/* The static interface pointer, points to the currently detected interface */
181static struct wmi_interface *interface;
182
183/*
184 * Embedded Controller quirks
185 * Some laptops require us to directly access the EC to either enable or query
186 * features that are not available through WMI.
187 */
188
189struct quirk_entry {
190 u8 wireless;
191 u8 mailled;
9991d9f2 192 s8 brightness;
745a5d21
CC		 193 u8 bluetooth;
194};
195
196static struct quirk_entry *quirks;
197
198static void set_quirks(void)
199{
83097aca
AV		 200 if (!interface)
201 return;
202
745a5d21
CC		 203 if (quirks->mailled)
204 interface->capability |= ACER_CAP_MAILLED;
205
206 if (quirks->brightness)
207 interface->capability |= ACER_CAP_BRIGHTNESS;
208}
209
210static int dmi_matched(const struct dmi_system_id *dmi)
211{
212 quirks = dmi->driver_data;
213 return 0;
214}
215
216static struct quirk_entry quirk_unknown = {
217};
218
9991d9f2
CC		 219static struct quirk_entry quirk_acer_aspire_1520 = {
220 .brightness = -1,
221};
222
745a5d21
CC		 223static struct quirk_entry quirk_acer_travelmate_2490 = {
224 .mailled = 1,
225};
226
227/* This AMW0 laptop has no bluetooth */
228static struct quirk_entry quirk_medion_md_98300 = {
229 .wireless = 1,
230};
231
6f061ab5
CC		 232static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
233 .wireless = 2,
234};
235
745a5d21 236static struct dmi_system_id acer_quirks[] = {
9991d9f2
CC		 237 {
238 .callback = dmi_matched,
239 .ident = "Acer Aspire 1360",
240 .matches = {
241 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
242 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
243 },
244 .driver_data = &quirk_acer_aspire_1520,
245 },
246 {
247 .callback = dmi_matched,
248 .ident = "Acer Aspire 1520",
249 .matches = {
250 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
251 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
252 },
253 .driver_data = &quirk_acer_aspire_1520,
254 },
745a5d21
CC		 255 {
256 .callback = dmi_matched,
257 .ident = "Acer Aspire 3100",
258 .matches = {
259 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
260 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
261 },
262 .driver_data = &quirk_acer_travelmate_2490,
263 },
ed9cfe98
CC		 264 {
265 .callback = dmi_matched,
266 .ident = "Acer Aspire 3610",
267 .matches = {
268 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
269 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
270 },
271 .driver_data = &quirk_acer_travelmate_2490,
272 },
745a5d21
CC		 273 {
274 .callback = dmi_matched,
275 .ident = "Acer Aspire 5100",
276 .matches = {
277 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
278 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
279 },
280 .driver_data = &quirk_acer_travelmate_2490,
281 },
ed9cfe98
CC		 282 {
283 .callback = dmi_matched,
284 .ident = "Acer Aspire 5610",
285 .matches = {
286 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
287 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
288 },
289 .driver_data = &quirk_acer_travelmate_2490,
290 },
745a5d21
CC		 291 {
292 .callback = dmi_matched,
293 .ident = "Acer Aspire 5630",
294 .matches = {
295 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
296 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
297 },
298 .driver_data = &quirk_acer_travelmate_2490,
299 },
300 {
301 .callback = dmi_matched,
302 .ident = "Acer Aspire 5650",
303 .matches = {
304 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
305 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
306 },
307 .driver_data = &quirk_acer_travelmate_2490,
308 },
309 {
310 .callback = dmi_matched,
311 .ident = "Acer Aspire 5680",
312 .matches = {
313 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
314 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
315 },
316 .driver_data = &quirk_acer_travelmate_2490,
317 },
318 {
319 .callback = dmi_matched,
320 .ident = "Acer Aspire 9110",
321 .matches = {
322 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
323 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
324 },
325 .driver_data = &quirk_acer_travelmate_2490,
326 },
327 {
328 .callback = dmi_matched,
329 .ident = "Acer TravelMate 2490",
330 .matches = {
331 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
332 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
333 },
334 .driver_data = &quirk_acer_travelmate_2490,
335 },
262ee35b
CC		 336 {
337 .callback = dmi_matched,
338 .ident = "Acer TravelMate 4200",
339 .matches = {
340 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
341 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
342 },
343 .driver_data = &quirk_acer_travelmate_2490,
344 },
6f061ab5
CC		 345 {
346 .callback = dmi_matched,
347 .ident = "Fujitsu Siemens Amilo Li 1718",
348 .matches = {
349 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
350 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
351 },
352 .driver_data = &quirk_fujitsu_amilo_li_1718,
353 },
745a5d21
CC		 354 {
355 .callback = dmi_matched,
356 .ident = "Medion MD 98300",
357 .matches = {
358 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
359 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
360 },
361 .driver_data = &quirk_medion_md_98300,
362 },
363 {}
364};
365
366/* Find which quirks are needed for a particular vendor/ model pair */
367static void find_quirks(void)
368{
369 if (!force_series) {
370 dmi_check_system(acer_quirks);
371 } else if (force_series == 2490) {
372 quirks = &quirk_acer_travelmate_2490;
373 }
374
375 if (quirks == NULL)
376 quirks = &quirk_unknown;
377
378 set_quirks();
379}
380
381/*
382 * General interface convenience methods
383 */
384
385static bool has_cap(u32 cap)
386{
387 if ((interface->capability & cap) != 0)
388 return 1;
389
390 return 0;
391}
392
393/*
394 * AMW0 (V1) interface
395 */
396struct wmab_args {
397 u32 eax;
398 u32 ebx;
399 u32 ecx;
400 u32 edx;
401};
402
403struct wmab_ret {
404 u32 eax;
405 u32 ebx;
406 u32 ecx;
407 u32 edx;
408 u32 eex;
409};
410
411static acpi_status wmab_execute(struct wmab_args *regbuf,
412struct acpi_buffer *result)
413{
414 struct acpi_buffer input;
415 acpi_status status;
416 input.length = sizeof(struct wmab_args);
417 input.pointer = (u8 *)regbuf;
418
419 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
420
421 return status;
422}
423
424static acpi_status AMW0_get_u32(u32 *value, u32 cap,
425struct wmi_interface *iface)
426{
427 int err;
428 u8 result;
429
430 switch (cap) {
431 case ACER_CAP_MAILLED:
432 switch (quirks->mailled) {
433 default:
434 err = ec_read(0xA, &result);
435 if (err)
436 return AE_ERROR;
437 *value = (result >> 7) & 0x1;
438 return AE_OK;
439 }
440 break;
441 case ACER_CAP_WIRELESS:
442 switch (quirks->wireless) {
443 case 1:
444 err = ec_read(0x7B, &result);
445 if (err)
446 return AE_ERROR;
447 *value = result & 0x1;
448 return AE_OK;
6f061ab5
CC		 449 case 2:
450 err = ec_read(0x71, &result);
451 if (err)
452 return AE_ERROR;
453 *value = result & 0x1;
454 return AE_OK;
745a5d21
CC		 455 default:
456 err = ec_read(0xA, &result);
457 if (err)
458 return AE_ERROR;
459 *value = (result >> 2) & 0x1;
460 return AE_OK;
461 }
462 break;
463 case ACER_CAP_BLUETOOTH:
464 switch (quirks->bluetooth) {
465 default:
466 err = ec_read(0xA, &result);
467 if (err)
468 return AE_ERROR;
469 *value = (result >> 4) & 0x1;
470 return AE_OK;
471 }
472 break;
473 case ACER_CAP_BRIGHTNESS:
474 switch (quirks->brightness) {
475 default:
476 err = ec_read(0x83, &result);
477 if (err)
478 return AE_ERROR;
479 *value = result;
480 return AE_OK;
481 }
482 break;
483 default:
484 return AE_BAD_ADDRESS;
485 }
486 return AE_OK;
487}
488
489static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
490{
491 struct wmab_args args;
492
493 args.eax = ACER_AMW0_WRITE;
494 args.ebx = value ? (1<<8) : 0;
495 args.ecx = args.edx = 0;
496
497 switch (cap) {
498 case ACER_CAP_MAILLED:
499 if (value > 1)
500 return AE_BAD_PARAMETER;
501 args.ebx |= ACER_AMW0_MAILLED_MASK;
502 break;
503 case ACER_CAP_WIRELESS:
504 if (value > 1)
505 return AE_BAD_PARAMETER;
506 args.ebx |= ACER_AMW0_WIRELESS_MASK;
507 break;
508 case ACER_CAP_BLUETOOTH:
509 if (value > 1)
510 return AE_BAD_PARAMETER;
511 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
512 break;
513 case ACER_CAP_BRIGHTNESS:
514 if (value > max_brightness)
515 return AE_BAD_PARAMETER;
516 switch (quirks->brightness) {
745a5d21 517 default:
4609d029
CC		 518 return ec_write(0x83, value);
519 break;
745a5d21
CC		 520 }
521 default:
522 return AE_BAD_ADDRESS;
523 }
524
525 /* Actually do the set */
526 return wmab_execute(&args, NULL);
527}
528
529static acpi_status AMW0_find_mailled(void)
530{
531 struct wmab_args args;
532 struct wmab_ret ret;
533 acpi_status status = AE_OK;
534 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
535 union acpi_object *obj;
536
537 args.eax = 0x86;
538 args.ebx = args.ecx = args.edx = 0;
539
540 status = wmab_execute(&args, &out);
541 if (ACPI_FAILURE(status))
542 return status;
543
544 obj = (union acpi_object *) out.pointer;
545 if (obj && obj->type == ACPI_TYPE_BUFFER &&
546 obj->buffer.length == sizeof(struct wmab_ret)) {
547 ret = *((struct wmab_ret *) obj->buffer.pointer);
548 } else {
549 return AE_ERROR;
550 }
551
552 if (ret.eex & 0x1)
553 interface->capability |= ACER_CAP_MAILLED;
554
555 kfree(out.pointer);
556
557 return AE_OK;
558}
559
560static acpi_status AMW0_set_capabilities(void)
561{
562 struct wmab_args args;
563 struct wmab_ret ret;
564 acpi_status status = AE_OK;
565 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
566 union acpi_object *obj;
567
5753dd53
CC		 568 /*
569 * On laptops with this strange GUID (non Acer), normal probing doesn't
570 * work.
571 */
572 if (wmi_has_guid(AMW0_GUID2)) {
573 interface->capability |= ACER_CAP_WIRELESS;
574 return AE_OK;
575 }
576
745a5d21
CC		 577 args.eax = ACER_AMW0_WRITE;
578 args.ecx = args.edx = 0;
579
580 args.ebx = 0xa2 << 8;
581 args.ebx |= ACER_AMW0_WIRELESS_MASK;
582
583 status = wmab_execute(&args, &out);
584 if (ACPI_FAILURE(status))
585 return status;
586
587 obj = (union acpi_object *) out.pointer;
588 if (obj && obj->type == ACPI_TYPE_BUFFER &&
589 obj->buffer.length == sizeof(struct wmab_ret)) {
590 ret = *((struct wmab_ret *) obj->buffer.pointer);
591 } else {
592 return AE_ERROR;
593 }
594
595 if (ret.eax & 0x1)
596 interface->capability |= ACER_CAP_WIRELESS;
597
598 args.ebx = 2 << 8;
599 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
600
601 status = wmab_execute(&args, &out);
602 if (ACPI_FAILURE(status))
603 return status;
604
605 obj = (union acpi_object *) out.pointer;
606 if (obj && obj->type == ACPI_TYPE_BUFFER
607 && obj->buffer.length == sizeof(struct wmab_ret)) {
608 ret = *((struct wmab_ret *) obj->buffer.pointer);
609 } else {
610 return AE_ERROR;
611 }
612
613 if (ret.eax & 0x1)
614 interface->capability |= ACER_CAP_BLUETOOTH;
615
616 kfree(out.pointer);
617
618 /*
619 * This appears to be safe to enable, since all Wistron based laptops
620 * appear to use the same EC register for brightness, even if they
621 * differ for wireless, etc
622 */
9991d9f2
CC		 623 if (quirks->brightness >= 0)
624 interface->capability |= ACER_CAP_BRIGHTNESS;
745a5d21
CC		 625
626 return AE_OK;
627}
628
629static struct wmi_interface AMW0_interface = {
630 .type = ACER_AMW0,
631};
632
633static struct wmi_interface AMW0_V2_interface = {
634 .type = ACER_AMW0_V2,
635};
636
637/*
638 * New interface (The WMID interface)
639 */
640static acpi_status
641WMI_execute_u32(u32 method_id, u32 in, u32 *out)
642{
643 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
644 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
645 union acpi_object *obj;
646 u32 tmp;
647 acpi_status status;
648
649 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
650
651 if (ACPI_FAILURE(status))
652 return status;
653
654 obj = (union acpi_object *) result.pointer;
655 if (obj && obj->type == ACPI_TYPE_BUFFER &&
656 obj->buffer.length == sizeof(u32)) {
657 tmp = *((u32 *) obj->buffer.pointer);
658 } else {
659 tmp = 0;
660 }
661
662 if (out)
663 *out = tmp;
664
665 kfree(result.pointer);
666
667 return status;
668}
669
670static acpi_status WMID_get_u32(u32 *value, u32 cap,
671struct wmi_interface *iface)
672{
673 acpi_status status;
674 u8 tmp;
675 u32 result, method_id = 0;
676
677 switch (cap) {
678 case ACER_CAP_WIRELESS:
679 method_id = ACER_WMID_GET_WIRELESS_METHODID;
680 break;
681 case ACER_CAP_BLUETOOTH:
682 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
683 break;
684 case ACER_CAP_BRIGHTNESS:
685 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
686 break;
687 case ACER_CAP_THREEG:
688 method_id = ACER_WMID_GET_THREEG_METHODID;
689 break;
690 case ACER_CAP_MAILLED:
691 if (quirks->mailled == 1) {
692 ec_read(0x9f, &tmp);
693 *value = tmp & 0x1;
694 return 0;
695 }
696 default:
697 return AE_BAD_ADDRESS;
698 }
699 status = WMI_execute_u32(method_id, 0, &result);
700
701 if (ACPI_SUCCESS(status))
702 *value = (u8)result;
703
704 return status;
705}
706
707static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
708{
709 u32 method_id = 0;
710 char param;
711
712 switch (cap) {
713 case ACER_CAP_BRIGHTNESS:
714 if (value > max_brightness)
715 return AE_BAD_PARAMETER;
716 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
717 break;
718 case ACER_CAP_WIRELESS:
719 if (value > 1)
720 return AE_BAD_PARAMETER;
721 method_id = ACER_WMID_SET_WIRELESS_METHODID;
722 break;
723 case ACER_CAP_BLUETOOTH:
724 if (value > 1)
725 return AE_BAD_PARAMETER;
726 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
727 break;
728 case ACER_CAP_THREEG:
729 if (value > 1)
730 return AE_BAD_PARAMETER;
731 method_id = ACER_WMID_SET_THREEG_METHODID;
732 break;
733 case ACER_CAP_MAILLED:
734 if (value > 1)
735 return AE_BAD_PARAMETER;
736 if (quirks->mailled == 1) {
737 param = value ? 0x92 : 0x93;
738 i8042_command(&param, 0x1059);
739 return 0;
740 }
741 break;
742 default:
743 return AE_BAD_ADDRESS;
744 }
745 return WMI_execute_u32(method_id, (u32)value, NULL);
746}
747
748static acpi_status WMID_set_capabilities(void)
749{
750 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
751 union acpi_object *obj;
752 acpi_status status;
753 u32 devices;
754
755 status = wmi_query_block(WMID_GUID2, 1, &out);
756 if (ACPI_FAILURE(status))
757 return status;
758
759 obj = (union acpi_object *) out.pointer;
760 if (obj && obj->type == ACPI_TYPE_BUFFER &&
761 obj->buffer.length == sizeof(u32)) {
762 devices = *((u32 *) obj->buffer.pointer);
763 } else {
764 return AE_ERROR;
765 }
766
767 /* Not sure on the meaning of the relevant bits yet to detect these */
768 interface->capability |= ACER_CAP_WIRELESS;
769 interface->capability |= ACER_CAP_THREEG;
770
771 /* WMID always provides brightness methods */
772 interface->capability |= ACER_CAP_BRIGHTNESS;
773
774 if (devices & 0x10)
775 interface->capability |= ACER_CAP_BLUETOOTH;
776
777 if (!(devices & 0x20))
778 max_brightness = 0x9;
779
780 return status;
781}
782
783static struct wmi_interface wmid_interface = {
784 .type = ACER_WMID,
785};
786
787/*
788 * Generic Device (interface-independent)
789 */
790
791static acpi_status get_u32(u32 *value, u32 cap)
792{
793 acpi_status status = AE_BAD_ADDRESS;
794
795 switch (interface->type) {
796 case ACER_AMW0:
797 status = AMW0_get_u32(value, cap, interface);
798 break;
799 case ACER_AMW0_V2:
800 if (cap == ACER_CAP_MAILLED) {
801 status = AMW0_get_u32(value, cap, interface);
802 break;
803 }
804 case ACER_WMID:
805 status = WMID_get_u32(value, cap, interface);
806 break;
807 }
808
809 return status;
810}
811
812static acpi_status set_u32(u32 value, u32 cap)
813{
5c742b45
CC		 814 acpi_status status;
815
745a5d21
CC		 816 if (interface->capability & cap) {
817 switch (interface->type) {
818 case ACER_AMW0:
819 return AMW0_set_u32(value, cap, interface);
820 case ACER_AMW0_V2:
5c742b45
CC		 821 if (cap == ACER_CAP_MAILLED)
822 return AMW0_set_u32(value, cap, interface);
823
824 /*
825 * On some models, some WMID methods don't toggle
826 * properly. For those cases, we want to run the AMW0
827 * method afterwards to be certain we've really toggled
828 * the device state.
829 */
830 if (cap == ACER_CAP_WIRELESS ||
831 cap == ACER_CAP_BLUETOOTH) {
832 status = WMID_set_u32(value, cap, interface);
833 if (ACPI_FAILURE(status))
834 return status;
835
836 return AMW0_set_u32(value, cap, interface);
837 }
745a5d21
CC		 838 case ACER_WMID:
839 return WMID_set_u32(value, cap, interface);
840 default:
841 return AE_BAD_PARAMETER;
842 }
843 }
844 return AE_BAD_PARAMETER;
845}
846
847static void __init acer_commandline_init(void)
848{
849 /*
850 * These will all fail silently if the value given is invalid, or the
851 * capability isn't available on the given interface
852 */
853 set_u32(mailled, ACER_CAP_MAILLED);
854 set_u32(wireless, ACER_CAP_WIRELESS);
855 set_u32(bluetooth, ACER_CAP_BLUETOOTH);
856 set_u32(threeg, ACER_CAP_THREEG);
857 set_u32(brightness, ACER_CAP_BRIGHTNESS);
858}
859
860/*
861 * LED device (Mail LED only, no other LEDs known yet)
862 */
863static void mail_led_set(struct led_classdev *led_cdev,
864enum led_brightness value)
865{
866 set_u32(value, ACER_CAP_MAILLED);
867}
868
869static struct led_classdev mail_led = {
343c0042 870 .name = "acer-wmi::mail",
745a5d21
CC		 871 .brightness_set = mail_led_set,
872};
873
7560e385 874static int __devinit acer_led_init(struct device *dev)
745a5d21
CC		 875{
876 return led_classdev_register(dev, &mail_led);
877}
878
879static void acer_led_exit(void)
880{
881 led_classdev_unregister(&mail_led);
882}
883
884/*
885 * Backlight device
886 */
887static struct backlight_device *acer_backlight_device;
888
889static int read_brightness(struct backlight_device *bd)
890{
891 u32 value;
892 get_u32(&value, ACER_CAP_BRIGHTNESS);
893 return value;
894}
895
896static int update_bl_status(struct backlight_device *bd)
897{
f2b585b4
CC		 898 int intensity = bd->props.brightness;
899
900 if (bd->props.power != FB_BLANK_UNBLANK)
901 intensity = 0;
902 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
903 intensity = 0;
904
905 set_u32(intensity, ACER_CAP_BRIGHTNESS);
906
745a5d21
CC		 907 return 0;
908}
909
910static struct backlight_ops acer_bl_ops = {
911 .get_brightness = read_brightness,
912 .update_status = update_bl_status,
913};
914
7560e385 915static int __devinit acer_backlight_init(struct device *dev)
745a5d21
CC		 916{
917 struct backlight_device *bd;
918
919 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops);
920 if (IS_ERR(bd)) {
921 printk(ACER_ERR "Could not register Acer backlight device\n");
922 acer_backlight_device = NULL;
923 return PTR_ERR(bd);
924 }
925
926 acer_backlight_device = bd;
927
f2b585b4
CC		 928 bd->props.power = FB_BLANK_UNBLANK;
929 bd->props.brightness = max_brightness;
745a5d21 930 bd->props.max_brightness = max_brightness;
745a5d21
CC		 931 backlight_update_status(bd);
932 return 0;
933}
934
7560e385 935static void acer_backlight_exit(void)
745a5d21
CC		 936{
937 backlight_device_unregister(acer_backlight_device);
938}
939
0606e1ab
CC		 940/*
941 * Rfkill devices
942 */
943static struct workqueue_struct *rfkill_workqueue;
944
945static void acer_rfkill_update(struct work_struct *ignored);
946static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
947static void acer_rfkill_update(struct work_struct *ignored)
948{
949 u32 state;
950 acpi_status status;
951
952 status = get_u32(&state, ACER_CAP_WIRELESS);
953 if (ACPI_SUCCESS(status))
954 rfkill_force_state(wireless_rfkill, state ?
955 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED);
956
957 if (has_cap(ACER_CAP_BLUETOOTH)) {
958 status = get_u32(&state, ACER_CAP_BLUETOOTH);
959 if (ACPI_SUCCESS(status))
960 rfkill_force_state(bluetooth_rfkill, state ?
961 RFKILL_STATE_UNBLOCKED :
962 RFKILL_STATE_SOFT_BLOCKED);
963 }
964
965 queue_delayed_work(rfkill_workqueue, &acer_rfkill_work,
966 round_jiffies_relative(HZ));
967}
968
969static int acer_rfkill_set(void *data, enum rfkill_state state)
970{
971 acpi_status status;
972 u32 *cap = data;
973 status = set_u32((u32) (state == RFKILL_STATE_UNBLOCKED), *cap);
974 if (ACPI_FAILURE(status))
975 return -ENODEV;
976 return 0;
977}
978
979static struct rfkill * acer_rfkill_register(struct device *dev,
980enum rfkill_type type, char *name, u32 cap)
981{
982 int err;
983 u32 state;
984 u32 *data;
985 struct rfkill *rfkill_dev;
986
987 rfkill_dev = rfkill_allocate(dev, type);
988 if (!rfkill_dev)
989 return ERR_PTR(-ENOMEM);
990 rfkill_dev->name = name;
991 get_u32(&state, cap);
992 rfkill_dev->state = state ? RFKILL_STATE_UNBLOCKED :
993 RFKILL_STATE_SOFT_BLOCKED;
994 data = kzalloc(sizeof(u32), GFP_KERNEL);
995 if (!data) {
996 rfkill_free(rfkill_dev);
997 return ERR_PTR(-ENOMEM);
998 }
999 *data = cap;
1000 rfkill_dev->data = data;
1001 rfkill_dev->toggle_radio = acer_rfkill_set;
1002 rfkill_dev->user_claim_unsupported = 1;
1003
1004 err = rfkill_register(rfkill_dev);
1005 if (err) {
1006 kfree(rfkill_dev->data);
1007 rfkill_free(rfkill_dev);
1008 return ERR_PTR(err);
1009 }
1010 return rfkill_dev;
1011}
1012
1013static int acer_rfkill_init(struct device *dev)
1014{
1015 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1016 "acer-wireless", ACER_CAP_WIRELESS);
1017 if (IS_ERR(wireless_rfkill))
1018 return PTR_ERR(wireless_rfkill);
1019
1020 if (has_cap(ACER_CAP_BLUETOOTH)) {
1021 bluetooth_rfkill = acer_rfkill_register(dev,
1022 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1023 ACER_CAP_BLUETOOTH);
1024 if (IS_ERR(bluetooth_rfkill)) {
1025 kfree(wireless_rfkill->data);
1026 rfkill_unregister(wireless_rfkill);
1027 return PTR_ERR(bluetooth_rfkill);
1028 }
1029 }
1030
1031 rfkill_workqueue = create_singlethread_workqueue("rfkill_workqueue");
1032 if (!rfkill_workqueue) {
1033 if (has_cap(ACER_CAP_BLUETOOTH)) {
1034 kfree(bluetooth_rfkill->data);
1035 rfkill_unregister(bluetooth_rfkill);
1036 }
1037 kfree(wireless_rfkill->data);
1038 rfkill_unregister(wireless_rfkill);
1039 return -ENOMEM;
1040 }
1041 queue_delayed_work(rfkill_workqueue, &acer_rfkill_work, HZ);
1042
1043 return 0;
1044}
1045
1046static void acer_rfkill_exit(void)
1047{
1048 cancel_delayed_work_sync(&acer_rfkill_work);
1049 destroy_workqueue(rfkill_workqueue);
1050 kfree(wireless_rfkill->data);
1051 rfkill_unregister(wireless_rfkill);
1052 if (has_cap(ACER_CAP_BLUETOOTH)) {
1053 kfree(wireless_rfkill->data);
1054 rfkill_unregister(bluetooth_rfkill);
1055 }
1056 return;
1057}
1058
745a5d21
CC		 1059/*
1060 * Read/ write bool sysfs macro
1061 */
1062#define show_set_bool(value, cap) \
1063static ssize_t \
1064show_bool_##value(struct device *dev, struct device_attribute *attr, \
1065 char *buf) \
1066{ \
1067 u32 result; \
1068 acpi_status status = get_u32(&result, cap); \
1069 if (ACPI_SUCCESS(status)) \
1070 return sprintf(buf, "%u\n", result); \
1071 return sprintf(buf, "Read error\n"); \
1072} \
1073\
1074static ssize_t \
1075set_bool_##value(struct device *dev, struct device_attribute *attr, \
1076 const char *buf, size_t count) \
1077{ \
1078 u32 tmp = simple_strtoul(buf, NULL, 10); \
1079 acpi_status status = set_u32(tmp, cap); \
1080 if (ACPI_FAILURE(status)) \
1081 return -EINVAL; \
1082 return count; \
1083} \
1084static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
1085 show_bool_##value, set_bool_##value);
1086
1087show_set_bool(wireless, ACER_CAP_WIRELESS);
1088show_set_bool(bluetooth, ACER_CAP_BLUETOOTH);
1089show_set_bool(threeg, ACER_CAP_THREEG);
1090
1091/*
1092 * Read interface sysfs macro
1093 */
1094static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1095 char *buf)
1096{
1097 switch (interface->type) {
1098 case ACER_AMW0:
1099 return sprintf(buf, "AMW0\n");
1100 case ACER_AMW0_V2:
1101 return sprintf(buf, "AMW0 v2\n");
1102 case ACER_WMID:
1103 return sprintf(buf, "WMID\n");
1104 default:
1105 return sprintf(buf, "Error!\n");
1106 }
1107}
1108
1109static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
1110 show_interface, NULL);
1111
81143522
CC		 1112/*
1113 * debugfs functions
1114 */
1115static u32 get_wmid_devices(void)
1116{
1117 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1118 union acpi_object *obj;
1119 acpi_status status;
1120
1121 status = wmi_query_block(WMID_GUID2, 1, &out);
1122 if (ACPI_FAILURE(status))
1123 return 0;
1124
1125 obj = (union acpi_object *) out.pointer;
1126 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1127 obj->buffer.length == sizeof(u32)) {
1128 return *((u32 *) obj->buffer.pointer);
1129 } else {
1130 return 0;
1131 }
1132}
1133
745a5d21
CC		 1134/*
1135 * Platform device
1136 */
1137static int __devinit acer_platform_probe(struct platform_device *device)
1138{
1139 int err;
1140
1141 if (has_cap(ACER_CAP_MAILLED)) {
1142 err = acer_led_init(&device->dev);
1143 if (err)
1144 goto error_mailled;
1145 }
1146
1147 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1148 err = acer_backlight_init(&device->dev);
1149 if (err)
1150 goto error_brightness;
1151 }
1152
0606e1ab
CC		 1153 err = acer_rfkill_init(&device->dev);
1154
1155 return err;
745a5d21
CC		 1156
1157error_brightness:
1158 acer_led_exit();
1159error_mailled:
1160 return err;
1161}
1162
1163static int acer_platform_remove(struct platform_device *device)
1164{
1165 if (has_cap(ACER_CAP_MAILLED))
1166 acer_led_exit();
1167 if (has_cap(ACER_CAP_BRIGHTNESS))
1168 acer_backlight_exit();
0606e1ab
CC		 1169
1170 acer_rfkill_exit();
745a5d21
CC		 1171 return 0;
1172}
1173
1174static int acer_platform_suspend(struct platform_device *dev,
1175pm_message_t state)
1176{
1177 u32 value;
1178 struct acer_data *data = &interface->data;
1179
1180 if (!data)
1181 return -ENOMEM;
1182
1183 if (has_cap(ACER_CAP_WIRELESS)) {
1184 get_u32(&value, ACER_CAP_WIRELESS);
1185 data->wireless = value;
1186 }
1187
1188 if (has_cap(ACER_CAP_BLUETOOTH)) {
1189 get_u32(&value, ACER_CAP_BLUETOOTH);
1190 data->bluetooth = value;
1191 }
1192
1193 if (has_cap(ACER_CAP_MAILLED)) {
1194 get_u32(&value, ACER_CAP_MAILLED);
1195 data->mailled = value;
1196 }
1197
1198 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1199 get_u32(&value, ACER_CAP_BRIGHTNESS);
1200 data->brightness = value;
1201 }
1202
1203 return 0;
1204}
1205
1206static int acer_platform_resume(struct platform_device *device)
1207{
1208 struct acer_data *data = &interface->data;
1209
1210 if (!data)
1211 return -ENOMEM;
1212
1213 if (has_cap(ACER_CAP_WIRELESS))
1214 set_u32(data->wireless, ACER_CAP_WIRELESS);
1215
1216 if (has_cap(ACER_CAP_BLUETOOTH))
1217 set_u32(data->bluetooth, ACER_CAP_BLUETOOTH);
1218
1219 if (has_cap(ACER_CAP_THREEG))
1220 set_u32(data->threeg, ACER_CAP_THREEG);
1221
1222 if (has_cap(ACER_CAP_MAILLED))
1223 set_u32(data->mailled, ACER_CAP_MAILLED);
1224
1225 if (has_cap(ACER_CAP_BRIGHTNESS))
1226 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1227
1228 return 0;
1229}
1230
1231static struct platform_driver acer_platform_driver = {
1232 .driver = {
1233 .name = "acer-wmi",
1234 .owner = THIS_MODULE,
1235 },
1236 .probe = acer_platform_probe,
1237 .remove = acer_platform_remove,
1238 .suspend = acer_platform_suspend,
1239 .resume = acer_platform_resume,
1240};
1241
1242static struct platform_device *acer_platform_device;
1243
1244static int remove_sysfs(struct platform_device *device)
1245{
1246 if (has_cap(ACER_CAP_WIRELESS))
1247 device_remove_file(&device->dev, &dev_attr_wireless);
1248
1249 if (has_cap(ACER_CAP_BLUETOOTH))
1250 device_remove_file(&device->dev, &dev_attr_bluetooth);
1251
1252 if (has_cap(ACER_CAP_THREEG))
1253 device_remove_file(&device->dev, &dev_attr_threeg);
1254
1255 device_remove_file(&device->dev, &dev_attr_interface);
1256
1257 return 0;
1258}
1259
1260static int create_sysfs(void)
1261{
1262 int retval = -ENOMEM;
1263
1264 if (has_cap(ACER_CAP_WIRELESS)) {
1265 retval = device_create_file(&acer_platform_device->dev,
1266 &dev_attr_wireless);
1267 if (retval)
1268 goto error_sysfs;
1269 }
1270
1271 if (has_cap(ACER_CAP_BLUETOOTH)) {
1272 retval = device_create_file(&acer_platform_device->dev,
1273 &dev_attr_bluetooth);
1274 if (retval)
1275 goto error_sysfs;
1276 }
1277
1278 if (has_cap(ACER_CAP_THREEG)) {
1279 retval = device_create_file(&acer_platform_device->dev,
1280 &dev_attr_threeg);
1281 if (retval)
1282 goto error_sysfs;
1283 }
1284
1285 retval = device_create_file(&acer_platform_device->dev,
1286 &dev_attr_interface);
1287 if (retval)
1288 goto error_sysfs;
1289
1290 return 0;
1291
1292error_sysfs:
1293 remove_sysfs(acer_platform_device);
1294 return retval;
1295}
1296
81143522
CC		 1297static void remove_debugfs(void)
1298{
1299 debugfs_remove(interface->debug.devices);
1300 debugfs_remove(interface->debug.root);
1301}
1302
1303static int create_debugfs(void)
1304{
1305 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1306 if (!interface->debug.root) {
1307 printk(ACER_ERR "Failed to create debugfs directory");
1308 return -ENOMEM;
1309 }
1310
1311 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1312 interface->debug.root,
1313 &interface->debug.wmid_devices);
1314 if (!interface->debug.devices)
1315 goto error_debugfs;
1316
1317 return 0;
1318
1319error_debugfs:
39dbbb45 1320 remove_debugfs();
81143522
CC		 1321 return -ENOMEM;
1322}
1323
745a5d21
CC		 1324static int __init acer_wmi_init(void)
1325{
1326 int err;
1327
860f0c6b 1328 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
745a5d21 1329
9991d9f2
CC		 1330 find_quirks();
1331
745a5d21
CC		 1332 /*
1333 * Detect which ACPI-WMI interface we're using.
1334 */
1335 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1336 interface = &AMW0_V2_interface;
1337
1338 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1339 interface = &wmid_interface;
1340
1341 if (wmi_has_guid(WMID_GUID2) && interface) {
1342 if (ACPI_FAILURE(WMID_set_capabilities())) {
8d039bc7
CC		 1343 printk(ACER_ERR "Unable to detect available WMID "
1344 "devices\n");
745a5d21
CC		 1345 return -ENODEV;
1346 }
1347 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
8d039bc7 1348 printk(ACER_ERR "No WMID device detection method found\n");
745a5d21
CC		 1349 return -ENODEV;
1350 }
1351
1352 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1353 interface = &AMW0_interface;
1354
1355 if (ACPI_FAILURE(AMW0_set_capabilities())) {
8d039bc7
CC		 1356 printk(ACER_ERR "Unable to detect available AMW0 "
1357 "devices\n");
745a5d21
CC		 1358 return -ENODEV;
1359 }
1360 }
1361
9b963c40
CC		 1362 if (wmi_has_guid(AMW0_GUID1))
1363 AMW0_find_mailled();
745a5d21 1364
745a5d21 1365 if (!interface) {
8d039bc7
CC		 1366 printk(ACER_ERR "No or unsupported WMI interface, unable to "
1367 "load\n");
745a5d21
CC		 1368 return -ENODEV;
1369 }
1370
83097aca
AV		 1371 set_quirks();
1372
745a5d21
CC		 1373 if (platform_driver_register(&acer_platform_driver)) {
1374 printk(ACER_ERR "Unable to register platform driver.\n");
1375 goto error_platform_register;
1376 }
1377 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1378 platform_device_add(acer_platform_device);
1379
1380 err = create_sysfs();
1381 if (err)
1382 return err;
1383
81143522
CC		 1384 if (wmi_has_guid(WMID_GUID2)) {
1385 interface->debug.wmid_devices = get_wmid_devices();
1386 err = create_debugfs();
1387 if (err)
1388 return err;
1389 }
1390
745a5d21
CC		 1391 /* Override any initial settings with values from the commandline */
1392 acer_commandline_init();
1393
1394 return 0;
1395
1396error_platform_register:
1397 return -ENODEV;
1398}
1399
1400static void __exit acer_wmi_exit(void)
1401{
1402 remove_sysfs(acer_platform_device);
39dbbb45 1403 remove_debugfs();
745a5d21
CC		 1404 platform_device_del(acer_platform_device);
1405 platform_driver_unregister(&acer_platform_driver);
1406
1407 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1408 return;
1409}
1410
1411module_init(acer_wmi_init);
1412module_exit(acer_wmi_exit);
Linux kernel - Deliverables
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