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Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
[linux.git] / drivers / misc / acer-wmi.c
CommitLineData
745a5d21
CC		 1/*
2 * Acer WMI Laptop Extras
3 *
4 * Copyright (C) 2007-2008 Carlos Corbacho <[email protected]>
5 *
6 * Based on acer_acpi:
7 * Copyright (C) 2005-2007 E.M. Smith
8 * Copyright (C) 2007-2008 Carlos Corbacho <[email protected]>
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>
81143522 36#include <linux/debugfs.h>
745a5d21
CC		 37
38#include <acpi/acpi_drivers.h>
39
40MODULE_AUTHOR("Carlos Corbacho");
41MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
42MODULE_LICENSE("GPL");
43
44#define ACER_LOGPREFIX "acer-wmi: "
45#define ACER_ERR KERN_ERR ACER_LOGPREFIX
46#define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
47#define ACER_INFO KERN_INFO ACER_LOGPREFIX
48
49/*
50 * The following defines quirks to get some specific functions to work
51 * which are known to not be supported over ACPI-WMI (such as the mail LED
52 * on WMID based Acer's)
53 */
54struct acer_quirks {
55 const char *vendor;
56 const char *model;
57 u16 quirks;
58};
59
60/*
61 * Magic Number
62 * Meaning is unknown - this number is required for writing to ACPI for AMW0
63 * (it's also used in acerhk when directly accessing the BIOS)
64 */
65#define ACER_AMW0_WRITE 0x9610
66
67/*
68 * Bit masks for the AMW0 interface
69 */
70#define ACER_AMW0_WIRELESS_MASK 0x35
71#define ACER_AMW0_BLUETOOTH_MASK 0x34
72#define ACER_AMW0_MAILLED_MASK 0x31
73
74/*
75 * Method IDs for WMID interface
76 */
77#define ACER_WMID_GET_WIRELESS_METHODID 1
78#define ACER_WMID_GET_BLUETOOTH_METHODID 2
79#define ACER_WMID_GET_BRIGHTNESS_METHODID 3
80#define ACER_WMID_SET_WIRELESS_METHODID 4
81#define ACER_WMID_SET_BLUETOOTH_METHODID 5
82#define ACER_WMID_SET_BRIGHTNESS_METHODID 6
83#define ACER_WMID_GET_THREEG_METHODID 10
84#define ACER_WMID_SET_THREEG_METHODID 11
85
86/*
87 * Acer ACPI method GUIDs
88 */
89#define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
5753dd53 90#define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
745a5d21
CC		 91#define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
92#define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
93
94MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
95MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
96
97/* Temporary workaround until the WMI sysfs interface goes in */
98MODULE_ALIAS("dmi:*:*Acer*:*:");
99
100/*
101 * Interface capability flags
102 */
103#define ACER_CAP_MAILLED (1<<0)
104#define ACER_CAP_WIRELESS (1<<1)
105#define ACER_CAP_BLUETOOTH (1<<2)
106#define ACER_CAP_BRIGHTNESS (1<<3)
107#define ACER_CAP_THREEG (1<<4)
108#define ACER_CAP_ANY (0xFFFFFFFF)
109
110/*
111 * Interface type flags
112 */
113enum interface_flags {
114 ACER_AMW0,
115 ACER_AMW0_V2,
116 ACER_WMID,
117};
118
119#define ACER_DEFAULT_WIRELESS 0
120#define ACER_DEFAULT_BLUETOOTH 0
121#define ACER_DEFAULT_MAILLED 0
122#define ACER_DEFAULT_THREEG 0
123
124static int max_brightness = 0xF;
125
126static int wireless = -1;
127static int bluetooth = -1;
128static int mailled = -1;
129static int brightness = -1;
130static int threeg = -1;
131static int force_series;
132
133module_param(mailled, int, 0444);
134module_param(wireless, int, 0444);
135module_param(bluetooth, int, 0444);
136module_param(brightness, int, 0444);
137module_param(threeg, int, 0444);
138module_param(force_series, int, 0444);
139MODULE_PARM_DESC(wireless, "Set initial state of Wireless hardware");
140MODULE_PARM_DESC(bluetooth, "Set initial state of Bluetooth hardware");
141MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
142MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
143MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
144MODULE_PARM_DESC(force_series, "Force a different laptop series");
145
146struct acer_data {
147 int mailled;
148 int wireless;
149 int bluetooth;
150 int threeg;
151 int brightness;
152};
153
81143522
CC		 154struct acer_debug {
155 struct dentry *root;
156 struct dentry *devices;
157 u32 wmid_devices;
158};
159
745a5d21
CC		 160/* Each low-level interface must define at least some of the following */
161struct wmi_interface {
162 /* The WMI device type */
163 u32 type;
164
165 /* The capabilities this interface provides */
166 u32 capability;
167
168 /* Private data for the current interface */
169 struct acer_data data;
81143522
CC		 170
171 /* debugfs entries associated with this interface */
172 struct acer_debug debug;
745a5d21
CC		 173};
174
175/* The static interface pointer, points to the currently detected interface */
176static struct wmi_interface *interface;
177
178/*
179 * Embedded Controller quirks
180 * Some laptops require us to directly access the EC to either enable or query
181 * features that are not available through WMI.
182 */
183
184struct quirk_entry {
185 u8 wireless;
186 u8 mailled;
9991d9f2 187 s8 brightness;
745a5d21
CC		 188 u8 bluetooth;
189};
190
191static struct quirk_entry *quirks;
192
193static void set_quirks(void)
194{
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
745a5d21 228static struct dmi_system_id acer_quirks[] = {
9991d9f2
CC		 229 {
230 .callback = dmi_matched,
231 .ident = "Acer Aspire 1360",
232 .matches = {
233 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
234 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
235 },
236 .driver_data = &quirk_acer_aspire_1520,
237 },
238 {
239 .callback = dmi_matched,
240 .ident = "Acer Aspire 1520",
241 .matches = {
242 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
243 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
244 },
245 .driver_data = &quirk_acer_aspire_1520,
246 },
745a5d21
CC		 247 {
248 .callback = dmi_matched,
249 .ident = "Acer Aspire 3100",
250 .matches = {
251 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
252 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
253 },
254 .driver_data = &quirk_acer_travelmate_2490,
255 },
ed9cfe98
CC		 256 {
257 .callback = dmi_matched,
258 .ident = "Acer Aspire 3610",
259 .matches = {
260 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
261 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
262 },
263 .driver_data = &quirk_acer_travelmate_2490,
264 },
745a5d21
CC		 265 {
266 .callback = dmi_matched,
267 .ident = "Acer Aspire 5100",
268 .matches = {
269 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
270 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
271 },
272 .driver_data = &quirk_acer_travelmate_2490,
273 },
ed9cfe98
CC		 274 {
275 .callback = dmi_matched,
276 .ident = "Acer Aspire 5610",
277 .matches = {
278 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
279 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
280 },
281 .driver_data = &quirk_acer_travelmate_2490,
282 },
745a5d21
CC		 283 {
284 .callback = dmi_matched,
285 .ident = "Acer Aspire 5630",
286 .matches = {
287 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
288 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
289 },
290 .driver_data = &quirk_acer_travelmate_2490,
291 },
292 {
293 .callback = dmi_matched,
294 .ident = "Acer Aspire 5650",
295 .matches = {
296 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
297 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
298 },
299 .driver_data = &quirk_acer_travelmate_2490,
300 },
301 {
302 .callback = dmi_matched,
303 .ident = "Acer Aspire 5680",
304 .matches = {
305 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
306 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
307 },
308 .driver_data = &quirk_acer_travelmate_2490,
309 },
310 {
311 .callback = dmi_matched,
312 .ident = "Acer Aspire 9110",
313 .matches = {
314 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
315 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
316 },
317 .driver_data = &quirk_acer_travelmate_2490,
318 },
319 {
320 .callback = dmi_matched,
321 .ident = "Acer TravelMate 2490",
322 .matches = {
323 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
324 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
325 },
326 .driver_data = &quirk_acer_travelmate_2490,
327 },
262ee35b
CC		 328 {
329 .callback = dmi_matched,
330 .ident = "Acer TravelMate 4200",
331 .matches = {
332 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
333 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
334 },
335 .driver_data = &quirk_acer_travelmate_2490,
336 },
6f061ab5
CC		 337 {
338 .callback = dmi_matched,
339 .ident = "Fujitsu Siemens Amilo Li 1718",
340 .matches = {
341 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
342 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
343 },
344 .driver_data = &quirk_fujitsu_amilo_li_1718,
345 },
745a5d21
CC		 346 {
347 .callback = dmi_matched,
348 .ident = "Medion MD 98300",
349 .matches = {
350 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
351 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
352 },
353 .driver_data = &quirk_medion_md_98300,
354 },
355 {}
356};
357
358/* Find which quirks are needed for a particular vendor/ model pair */
359static void find_quirks(void)
360{
361 if (!force_series) {
362 dmi_check_system(acer_quirks);
363 } else if (force_series == 2490) {
364 quirks = &quirk_acer_travelmate_2490;
365 }
366
367 if (quirks == NULL)
368 quirks = &quirk_unknown;
369
370 set_quirks();
371}
372
373/*
374 * General interface convenience methods
375 */
376
377static bool has_cap(u32 cap)
378{
379 if ((interface->capability & cap) != 0)
380 return 1;
381
382 return 0;
383}
384
385/*
386 * AMW0 (V1) interface
387 */
388struct wmab_args {
389 u32 eax;
390 u32 ebx;
391 u32 ecx;
392 u32 edx;
393};
394
395struct wmab_ret {
396 u32 eax;
397 u32 ebx;
398 u32 ecx;
399 u32 edx;
400 u32 eex;
401};
402
403static acpi_status wmab_execute(struct wmab_args *regbuf,
404struct acpi_buffer *result)
405{
406 struct acpi_buffer input;
407 acpi_status status;
408 input.length = sizeof(struct wmab_args);
409 input.pointer = (u8 *)regbuf;
410
411 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
412
413 return status;
414}
415
416static acpi_status AMW0_get_u32(u32 *value, u32 cap,
417struct wmi_interface *iface)
418{
419 int err;
420 u8 result;
421
422 switch (cap) {
423 case ACER_CAP_MAILLED:
424 switch (quirks->mailled) {
425 default:
426 err = ec_read(0xA, &result);
427 if (err)
428 return AE_ERROR;
429 *value = (result >> 7) & 0x1;
430 return AE_OK;
431 }
432 break;
433 case ACER_CAP_WIRELESS:
434 switch (quirks->wireless) {
435 case 1:
436 err = ec_read(0x7B, &result);
437 if (err)
438 return AE_ERROR;
439 *value = result & 0x1;
440 return AE_OK;
6f061ab5
CC		 441 case 2:
442 err = ec_read(0x71, &result);
443 if (err)
444 return AE_ERROR;
445 *value = result & 0x1;
446 return AE_OK;
745a5d21
CC		 447 default:
448 err = ec_read(0xA, &result);
449 if (err)
450 return AE_ERROR;
451 *value = (result >> 2) & 0x1;
452 return AE_OK;
453 }
454 break;
455 case ACER_CAP_BLUETOOTH:
456 switch (quirks->bluetooth) {
457 default:
458 err = ec_read(0xA, &result);
459 if (err)
460 return AE_ERROR;
461 *value = (result >> 4) & 0x1;
462 return AE_OK;
463 }
464 break;
465 case ACER_CAP_BRIGHTNESS:
466 switch (quirks->brightness) {
467 default:
468 err = ec_read(0x83, &result);
469 if (err)
470 return AE_ERROR;
471 *value = result;
472 return AE_OK;
473 }
474 break;
475 default:
476 return AE_BAD_ADDRESS;
477 }
478 return AE_OK;
479}
480
481static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
482{
483 struct wmab_args args;
484
485 args.eax = ACER_AMW0_WRITE;
486 args.ebx = value ? (1<<8) : 0;
487 args.ecx = args.edx = 0;
488
489 switch (cap) {
490 case ACER_CAP_MAILLED:
491 if (value > 1)
492 return AE_BAD_PARAMETER;
493 args.ebx |= ACER_AMW0_MAILLED_MASK;
494 break;
495 case ACER_CAP_WIRELESS:
496 if (value > 1)
497 return AE_BAD_PARAMETER;
498 args.ebx |= ACER_AMW0_WIRELESS_MASK;
499 break;
500 case ACER_CAP_BLUETOOTH:
501 if (value > 1)
502 return AE_BAD_PARAMETER;
503 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
504 break;
505 case ACER_CAP_BRIGHTNESS:
506 if (value > max_brightness)
507 return AE_BAD_PARAMETER;
508 switch (quirks->brightness) {
745a5d21 509 default:
4609d029
CC		 510 return ec_write(0x83, value);
511 break;
745a5d21
CC		 512 }
513 default:
514 return AE_BAD_ADDRESS;
515 }
516
517 /* Actually do the set */
518 return wmab_execute(&args, NULL);
519}
520
521static acpi_status AMW0_find_mailled(void)
522{
523 struct wmab_args args;
524 struct wmab_ret ret;
525 acpi_status status = AE_OK;
526 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
527 union acpi_object *obj;
528
529 args.eax = 0x86;
530 args.ebx = args.ecx = args.edx = 0;
531
532 status = wmab_execute(&args, &out);
533 if (ACPI_FAILURE(status))
534 return status;
535
536 obj = (union acpi_object *) out.pointer;
537 if (obj && obj->type == ACPI_TYPE_BUFFER &&
538 obj->buffer.length == sizeof(struct wmab_ret)) {
539 ret = *((struct wmab_ret *) obj->buffer.pointer);
540 } else {
541 return AE_ERROR;
542 }
543
544 if (ret.eex & 0x1)
545 interface->capability |= ACER_CAP_MAILLED;
546
547 kfree(out.pointer);
548
549 return AE_OK;
550}
551
552static acpi_status AMW0_set_capabilities(void)
553{
554 struct wmab_args args;
555 struct wmab_ret ret;
556 acpi_status status = AE_OK;
557 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
558 union acpi_object *obj;
559
5753dd53
CC		 560 /*
561 * On laptops with this strange GUID (non Acer), normal probing doesn't
562 * work.
563 */
564 if (wmi_has_guid(AMW0_GUID2)) {
565 interface->capability |= ACER_CAP_WIRELESS;
566 return AE_OK;
567 }
568
745a5d21
CC		 569 args.eax = ACER_AMW0_WRITE;
570 args.ecx = args.edx = 0;
571
572 args.ebx = 0xa2 << 8;
573 args.ebx |= ACER_AMW0_WIRELESS_MASK;
574
575 status = wmab_execute(&args, &out);
576 if (ACPI_FAILURE(status))
577 return status;
578
579 obj = (union acpi_object *) out.pointer;
580 if (obj && obj->type == ACPI_TYPE_BUFFER &&
581 obj->buffer.length == sizeof(struct wmab_ret)) {
582 ret = *((struct wmab_ret *) obj->buffer.pointer);
583 } else {
584 return AE_ERROR;
585 }
586
587 if (ret.eax & 0x1)
588 interface->capability |= ACER_CAP_WIRELESS;
589
590 args.ebx = 2 << 8;
591 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
592
593 status = wmab_execute(&args, &out);
594 if (ACPI_FAILURE(status))
595 return status;
596
597 obj = (union acpi_object *) out.pointer;
598 if (obj && obj->type == ACPI_TYPE_BUFFER
599 && obj->buffer.length == sizeof(struct wmab_ret)) {
600 ret = *((struct wmab_ret *) obj->buffer.pointer);
601 } else {
602 return AE_ERROR;
603 }
604
605 if (ret.eax & 0x1)
606 interface->capability |= ACER_CAP_BLUETOOTH;
607
608 kfree(out.pointer);
609
610 /*
611 * This appears to be safe to enable, since all Wistron based laptops
612 * appear to use the same EC register for brightness, even if they
613 * differ for wireless, etc
614 */
9991d9f2
CC		 615 if (quirks->brightness >= 0)
616 interface->capability |= ACER_CAP_BRIGHTNESS;
745a5d21
CC		 617
618 return AE_OK;
619}
620
621static struct wmi_interface AMW0_interface = {
622 .type = ACER_AMW0,
623};
624
625static struct wmi_interface AMW0_V2_interface = {
626 .type = ACER_AMW0_V2,
627};
628
629/*
630 * New interface (The WMID interface)
631 */
632static acpi_status
633WMI_execute_u32(u32 method_id, u32 in, u32 *out)
634{
635 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
636 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
637 union acpi_object *obj;
638 u32 tmp;
639 acpi_status status;
640
641 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
642
643 if (ACPI_FAILURE(status))
644 return status;
645
646 obj = (union acpi_object *) result.pointer;
647 if (obj && obj->type == ACPI_TYPE_BUFFER &&
648 obj->buffer.length == sizeof(u32)) {
649 tmp = *((u32 *) obj->buffer.pointer);
650 } else {
651 tmp = 0;
652 }
653
654 if (out)
655 *out = tmp;
656
657 kfree(result.pointer);
658
659 return status;
660}
661
662static acpi_status WMID_get_u32(u32 *value, u32 cap,
663struct wmi_interface *iface)
664{
665 acpi_status status;
666 u8 tmp;
667 u32 result, method_id = 0;
668
669 switch (cap) {
670 case ACER_CAP_WIRELESS:
671 method_id = ACER_WMID_GET_WIRELESS_METHODID;
672 break;
673 case ACER_CAP_BLUETOOTH:
674 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
675 break;
676 case ACER_CAP_BRIGHTNESS:
677 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
678 break;
679 case ACER_CAP_THREEG:
680 method_id = ACER_WMID_GET_THREEG_METHODID;
681 break;
682 case ACER_CAP_MAILLED:
683 if (quirks->mailled == 1) {
684 ec_read(0x9f, &tmp);
685 *value = tmp & 0x1;
686 return 0;
687 }
688 default:
689 return AE_BAD_ADDRESS;
690 }
691 status = WMI_execute_u32(method_id, 0, &result);
692
693 if (ACPI_SUCCESS(status))
694 *value = (u8)result;
695
696 return status;
697}
698
699static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
700{
701 u32 method_id = 0;
702 char param;
703
704 switch (cap) {
705 case ACER_CAP_BRIGHTNESS:
706 if (value > max_brightness)
707 return AE_BAD_PARAMETER;
708 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
709 break;
710 case ACER_CAP_WIRELESS:
711 if (value > 1)
712 return AE_BAD_PARAMETER;
713 method_id = ACER_WMID_SET_WIRELESS_METHODID;
714 break;
715 case ACER_CAP_BLUETOOTH:
716 if (value > 1)
717 return AE_BAD_PARAMETER;
718 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
719 break;
720 case ACER_CAP_THREEG:
721 if (value > 1)
722 return AE_BAD_PARAMETER;
723 method_id = ACER_WMID_SET_THREEG_METHODID;
724 break;
725 case ACER_CAP_MAILLED:
726 if (value > 1)
727 return AE_BAD_PARAMETER;
728 if (quirks->mailled == 1) {
729 param = value ? 0x92 : 0x93;
730 i8042_command(&param, 0x1059);
731 return 0;
732 }
733 break;
734 default:
735 return AE_BAD_ADDRESS;
736 }
737 return WMI_execute_u32(method_id, (u32)value, NULL);
738}
739
740static acpi_status WMID_set_capabilities(void)
741{
742 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
743 union acpi_object *obj;
744 acpi_status status;
745 u32 devices;
746
747 status = wmi_query_block(WMID_GUID2, 1, &out);
748 if (ACPI_FAILURE(status))
749 return status;
750
751 obj = (union acpi_object *) out.pointer;
752 if (obj && obj->type == ACPI_TYPE_BUFFER &&
753 obj->buffer.length == sizeof(u32)) {
754 devices = *((u32 *) obj->buffer.pointer);
755 } else {
756 return AE_ERROR;
757 }
758
759 /* Not sure on the meaning of the relevant bits yet to detect these */
760 interface->capability |= ACER_CAP_WIRELESS;
761 interface->capability |= ACER_CAP_THREEG;
762
763 /* WMID always provides brightness methods */
764 interface->capability |= ACER_CAP_BRIGHTNESS;
765
766 if (devices & 0x10)
767 interface->capability |= ACER_CAP_BLUETOOTH;
768
769 if (!(devices & 0x20))
770 max_brightness = 0x9;
771
772 return status;
773}
774
775static struct wmi_interface wmid_interface = {
776 .type = ACER_WMID,
777};
778
779/*
780 * Generic Device (interface-independent)
781 */
782
783static acpi_status get_u32(u32 *value, u32 cap)
784{
785 acpi_status status = AE_BAD_ADDRESS;
786
787 switch (interface->type) {
788 case ACER_AMW0:
789 status = AMW0_get_u32(value, cap, interface);
790 break;
791 case ACER_AMW0_V2:
792 if (cap == ACER_CAP_MAILLED) {
793 status = AMW0_get_u32(value, cap, interface);
794 break;
795 }
796 case ACER_WMID:
797 status = WMID_get_u32(value, cap, interface);
798 break;
799 }
800
801 return status;
802}
803
804static acpi_status set_u32(u32 value, u32 cap)
805{
5c742b45
CC		 806 acpi_status status;
807
745a5d21
CC		 808 if (interface->capability & cap) {
809 switch (interface->type) {
810 case ACER_AMW0:
811 return AMW0_set_u32(value, cap, interface);
812 case ACER_AMW0_V2:
5c742b45
CC		 813 if (cap == ACER_CAP_MAILLED)
814 return AMW0_set_u32(value, cap, interface);
815
816 /*
817 * On some models, some WMID methods don't toggle
818 * properly. For those cases, we want to run the AMW0
819 * method afterwards to be certain we've really toggled
820 * the device state.
821 */
822 if (cap == ACER_CAP_WIRELESS ||
823 cap == ACER_CAP_BLUETOOTH) {
824 status = WMID_set_u32(value, cap, interface);
825 if (ACPI_FAILURE(status))
826 return status;
827
828 return AMW0_set_u32(value, cap, interface);
829 }
745a5d21
CC		 830 case ACER_WMID:
831 return WMID_set_u32(value, cap, interface);
832 default:
833 return AE_BAD_PARAMETER;
834 }
835 }
836 return AE_BAD_PARAMETER;
837}
838
839static void __init acer_commandline_init(void)
840{
841 /*
842 * These will all fail silently if the value given is invalid, or the
843 * capability isn't available on the given interface
844 */
845 set_u32(mailled, ACER_CAP_MAILLED);
846 set_u32(wireless, ACER_CAP_WIRELESS);
847 set_u32(bluetooth, ACER_CAP_BLUETOOTH);
848 set_u32(threeg, ACER_CAP_THREEG);
849 set_u32(brightness, ACER_CAP_BRIGHTNESS);
850}
851
852/*
853 * LED device (Mail LED only, no other LEDs known yet)
854 */
855static void mail_led_set(struct led_classdev *led_cdev,
856enum led_brightness value)
857{
858 set_u32(value, ACER_CAP_MAILLED);
859}
860
861static struct led_classdev mail_led = {
343c0042 862 .name = "acer-wmi::mail",
745a5d21
CC		 863 .brightness_set = mail_led_set,
864};
865
7560e385 866static int __devinit acer_led_init(struct device *dev)
745a5d21
CC		 867{
868 return led_classdev_register(dev, &mail_led);
869}
870
871static void acer_led_exit(void)
872{
873 led_classdev_unregister(&mail_led);
874}
875
876/*
877 * Backlight device
878 */
879static struct backlight_device *acer_backlight_device;
880
881static int read_brightness(struct backlight_device *bd)
882{
883 u32 value;
884 get_u32(&value, ACER_CAP_BRIGHTNESS);
885 return value;
886}
887
888static int update_bl_status(struct backlight_device *bd)
889{
f2b585b4
CC		 890 int intensity = bd->props.brightness;
891
892 if (bd->props.power != FB_BLANK_UNBLANK)
893 intensity = 0;
894 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
895 intensity = 0;
896
897 set_u32(intensity, ACER_CAP_BRIGHTNESS);
898
745a5d21
CC		 899 return 0;
900}
901
902static struct backlight_ops acer_bl_ops = {
903 .get_brightness = read_brightness,
904 .update_status = update_bl_status,
905};
906
7560e385 907static int __devinit acer_backlight_init(struct device *dev)
745a5d21
CC		 908{
909 struct backlight_device *bd;
910
911 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops);
912 if (IS_ERR(bd)) {
913 printk(ACER_ERR "Could not register Acer backlight device\n");
914 acer_backlight_device = NULL;
915 return PTR_ERR(bd);
916 }
917
918 acer_backlight_device = bd;
919
f2b585b4
CC		 920 bd->props.power = FB_BLANK_UNBLANK;
921 bd->props.brightness = max_brightness;
745a5d21 922 bd->props.max_brightness = max_brightness;
745a5d21
CC		 923 backlight_update_status(bd);
924 return 0;
925}
926
7560e385 927static void acer_backlight_exit(void)
745a5d21
CC		 928{
929 backlight_device_unregister(acer_backlight_device);
930}
931
932/*
933 * Read/ write bool sysfs macro
934 */
935#define show_set_bool(value, cap) \
936static ssize_t \
937show_bool_##value(struct device *dev, struct device_attribute *attr, \
938 char *buf) \
939{ \
940 u32 result; \
941 acpi_status status = get_u32(&result, cap); \
942 if (ACPI_SUCCESS(status)) \
943 return sprintf(buf, "%u\n", result); \
944 return sprintf(buf, "Read error\n"); \
945} \
946\
947static ssize_t \
948set_bool_##value(struct device *dev, struct device_attribute *attr, \
949 const char *buf, size_t count) \
950{ \
951 u32 tmp = simple_strtoul(buf, NULL, 10); \
952 acpi_status status = set_u32(tmp, cap); \
953 if (ACPI_FAILURE(status)) \
954 return -EINVAL; \
955 return count; \
956} \
957static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
958 show_bool_##value, set_bool_##value);
959
960show_set_bool(wireless, ACER_CAP_WIRELESS);
961show_set_bool(bluetooth, ACER_CAP_BLUETOOTH);
962show_set_bool(threeg, ACER_CAP_THREEG);
963
964/*
965 * Read interface sysfs macro
966 */
967static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
968 char *buf)
969{
970 switch (interface->type) {
971 case ACER_AMW0:
972 return sprintf(buf, "AMW0\n");
973 case ACER_AMW0_V2:
974 return sprintf(buf, "AMW0 v2\n");
975 case ACER_WMID:
976 return sprintf(buf, "WMID\n");
977 default:
978 return sprintf(buf, "Error!\n");
979 }
980}
981
982static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
983 show_interface, NULL);
984
81143522
CC		 985/*
986 * debugfs functions
987 */
988static u32 get_wmid_devices(void)
989{
990 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
991 union acpi_object *obj;
992 acpi_status status;
993
994 status = wmi_query_block(WMID_GUID2, 1, &out);
995 if (ACPI_FAILURE(status))
996 return 0;
997
998 obj = (union acpi_object *) out.pointer;
999 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1000 obj->buffer.length == sizeof(u32)) {
1001 return *((u32 *) obj->buffer.pointer);
1002 } else {
1003 return 0;
1004 }
1005}
1006
745a5d21
CC		 1007/*
1008 * Platform device
1009 */
1010static int __devinit acer_platform_probe(struct platform_device *device)
1011{
1012 int err;
1013
1014 if (has_cap(ACER_CAP_MAILLED)) {
1015 err = acer_led_init(&device->dev);
1016 if (err)
1017 goto error_mailled;
1018 }
1019
1020 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1021 err = acer_backlight_init(&device->dev);
1022 if (err)
1023 goto error_brightness;
1024 }
1025
1026 return 0;
1027
1028error_brightness:
1029 acer_led_exit();
1030error_mailled:
1031 return err;
1032}
1033
1034static int acer_platform_remove(struct platform_device *device)
1035{
1036 if (has_cap(ACER_CAP_MAILLED))
1037 acer_led_exit();
1038 if (has_cap(ACER_CAP_BRIGHTNESS))
1039 acer_backlight_exit();
1040 return 0;
1041}
1042
1043static int acer_platform_suspend(struct platform_device *dev,
1044pm_message_t state)
1045{
1046 u32 value;
1047 struct acer_data *data = &interface->data;
1048
1049 if (!data)
1050 return -ENOMEM;
1051
1052 if (has_cap(ACER_CAP_WIRELESS)) {
1053 get_u32(&value, ACER_CAP_WIRELESS);
1054 data->wireless = value;
1055 }
1056
1057 if (has_cap(ACER_CAP_BLUETOOTH)) {
1058 get_u32(&value, ACER_CAP_BLUETOOTH);
1059 data->bluetooth = value;
1060 }
1061
1062 if (has_cap(ACER_CAP_MAILLED)) {
1063 get_u32(&value, ACER_CAP_MAILLED);
1064 data->mailled = value;
1065 }
1066
1067 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1068 get_u32(&value, ACER_CAP_BRIGHTNESS);
1069 data->brightness = value;
1070 }
1071
1072 return 0;
1073}
1074
1075static int acer_platform_resume(struct platform_device *device)
1076{
1077 struct acer_data *data = &interface->data;
1078
1079 if (!data)
1080 return -ENOMEM;
1081
1082 if (has_cap(ACER_CAP_WIRELESS))
1083 set_u32(data->wireless, ACER_CAP_WIRELESS);
1084
1085 if (has_cap(ACER_CAP_BLUETOOTH))
1086 set_u32(data->bluetooth, ACER_CAP_BLUETOOTH);
1087
1088 if (has_cap(ACER_CAP_THREEG))
1089 set_u32(data->threeg, ACER_CAP_THREEG);
1090
1091 if (has_cap(ACER_CAP_MAILLED))
1092 set_u32(data->mailled, ACER_CAP_MAILLED);
1093
1094 if (has_cap(ACER_CAP_BRIGHTNESS))
1095 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1096
1097 return 0;
1098}
1099
1100static struct platform_driver acer_platform_driver = {
1101 .driver = {
1102 .name = "acer-wmi",
1103 .owner = THIS_MODULE,
1104 },
1105 .probe = acer_platform_probe,
1106 .remove = acer_platform_remove,
1107 .suspend = acer_platform_suspend,
1108 .resume = acer_platform_resume,
1109};
1110
1111static struct platform_device *acer_platform_device;
1112
1113static int remove_sysfs(struct platform_device *device)
1114{
1115 if (has_cap(ACER_CAP_WIRELESS))
1116 device_remove_file(&device->dev, &dev_attr_wireless);
1117
1118 if (has_cap(ACER_CAP_BLUETOOTH))
1119 device_remove_file(&device->dev, &dev_attr_bluetooth);
1120
1121 if (has_cap(ACER_CAP_THREEG))
1122 device_remove_file(&device->dev, &dev_attr_threeg);
1123
1124 device_remove_file(&device->dev, &dev_attr_interface);
1125
1126 return 0;
1127}
1128
1129static int create_sysfs(void)
1130{
1131 int retval = -ENOMEM;
1132
1133 if (has_cap(ACER_CAP_WIRELESS)) {
1134 retval = device_create_file(&acer_platform_device->dev,
1135 &dev_attr_wireless);
1136 if (retval)
1137 goto error_sysfs;
1138 }
1139
1140 if (has_cap(ACER_CAP_BLUETOOTH)) {
1141 retval = device_create_file(&acer_platform_device->dev,
1142 &dev_attr_bluetooth);
1143 if (retval)
1144 goto error_sysfs;
1145 }
1146
1147 if (has_cap(ACER_CAP_THREEG)) {
1148 retval = device_create_file(&acer_platform_device->dev,
1149 &dev_attr_threeg);
1150 if (retval)
1151 goto error_sysfs;
1152 }
1153
1154 retval = device_create_file(&acer_platform_device->dev,
1155 &dev_attr_interface);
1156 if (retval)
1157 goto error_sysfs;
1158
1159 return 0;
1160
1161error_sysfs:
1162 remove_sysfs(acer_platform_device);
1163 return retval;
1164}
1165
81143522
CC		 1166static void remove_debugfs(void)
1167{
1168 debugfs_remove(interface->debug.devices);
1169 debugfs_remove(interface->debug.root);
1170}
1171
1172static int create_debugfs(void)
1173{
1174 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1175 if (!interface->debug.root) {
1176 printk(ACER_ERR "Failed to create debugfs directory");
1177 return -ENOMEM;
1178 }
1179
1180 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1181 interface->debug.root,
1182 &interface->debug.wmid_devices);
1183 if (!interface->debug.devices)
1184 goto error_debugfs;
1185
1186 return 0;
1187
1188error_debugfs:
1189 remove_debugfs();
1190 return -ENOMEM;
1191}
1192
745a5d21
CC		 1193static int __init acer_wmi_init(void)
1194{
1195 int err;
1196
860f0c6b 1197 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
745a5d21 1198
9991d9f2
CC		 1199 find_quirks();
1200
745a5d21
CC		 1201 /*
1202 * Detect which ACPI-WMI interface we're using.
1203 */
1204 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1205 interface = &AMW0_V2_interface;
1206
1207 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1208 interface = &wmid_interface;
1209
1210 if (wmi_has_guid(WMID_GUID2) && interface) {
1211 if (ACPI_FAILURE(WMID_set_capabilities())) {
8d039bc7
CC		 1212 printk(ACER_ERR "Unable to detect available WMID "
1213 "devices\n");
745a5d21
CC		 1214 return -ENODEV;
1215 }
1216 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
8d039bc7 1217 printk(ACER_ERR "No WMID device detection method found\n");
745a5d21
CC		 1218 return -ENODEV;
1219 }
1220
1221 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1222 interface = &AMW0_interface;
1223
1224 if (ACPI_FAILURE(AMW0_set_capabilities())) {
8d039bc7
CC		 1225 printk(ACER_ERR "Unable to detect available AMW0 "
1226 "devices\n");
745a5d21
CC		 1227 return -ENODEV;
1228 }
1229 }
1230
9b963c40
CC		 1231 if (wmi_has_guid(AMW0_GUID1))
1232 AMW0_find_mailled();
745a5d21 1233
745a5d21 1234 if (!interface) {
8d039bc7
CC		 1235 printk(ACER_ERR "No or unsupported WMI interface, unable to "
1236 "load\n");
745a5d21
CC		 1237 return -ENODEV;
1238 }
1239
1240 if (platform_driver_register(&acer_platform_driver)) {
1241 printk(ACER_ERR "Unable to register platform driver.\n");
1242 goto error_platform_register;
1243 }
1244 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1245 platform_device_add(acer_platform_device);
1246
1247 err = create_sysfs();
1248 if (err)
1249 return err;
1250
81143522
CC		 1251 if (wmi_has_guid(WMID_GUID2)) {
1252 interface->debug.wmid_devices = get_wmid_devices();
1253 err = create_debugfs();
1254 if (err)
1255 return err;
1256 }
1257
745a5d21
CC		 1258 /* Override any initial settings with values from the commandline */
1259 acer_commandline_init();
1260
1261 return 0;
1262
1263error_platform_register:
1264 return -ENODEV;
1265}
1266
1267static void __exit acer_wmi_exit(void)
1268{
1269 remove_sysfs(acer_platform_device);
1270 platform_device_del(acer_platform_device);
1271 platform_driver_unregister(&acer_platform_driver);
1272
1273 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1274 return;
1275}
1276
1277module_init(acer_wmi_init);
1278module_exit(acer_wmi_exit);
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