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acer-wmi: Add debugfs file for device detection
[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
25#define ACER_WMI_VERSION "0.1"
26
27#include <linux/kernel.h>
28#include <linux/module.h>
29#include <linux/init.h>
30#include <linux/types.h>
31#include <linux/dmi.h>
f2b585b4 32#include <linux/fb.h>
745a5d21
CC		 33#include <linux/backlight.h>
34#include <linux/leds.h>
35#include <linux/platform_device.h>
36#include <linux/acpi.h>
37#include <linux/i8042.h>
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
745a5d21
CC		 162/* Each low-level interface must define at least some of the following */
163struct wmi_interface {
164 /* The WMI device type */
165 u32 type;
166
167 /* The capabilities this interface provides */
168 u32 capability;
169
170 /* Private data for the current interface */
171 struct acer_data data;
81143522
CC		 172
173 /* debugfs entries associated with this interface */
174 struct acer_debug debug;
745a5d21
CC		 175};
176
177/* The static interface pointer, points to the currently detected interface */
178static struct wmi_interface *interface;
179
180/*
181 * Embedded Controller quirks
182 * Some laptops require us to directly access the EC to either enable or query
183 * features that are not available through WMI.
184 */
185
186struct quirk_entry {
187 u8 wireless;
188 u8 mailled;
9991d9f2 189 s8 brightness;
745a5d21
CC		 190 u8 bluetooth;
191};
192
193static struct quirk_entry *quirks;
194
195static void set_quirks(void)
196{
197 if (quirks->mailled)
198 interface->capability |= ACER_CAP_MAILLED;
199
200 if (quirks->brightness)
201 interface->capability |= ACER_CAP_BRIGHTNESS;
202}
203
204static int dmi_matched(const struct dmi_system_id *dmi)
205{
206 quirks = dmi->driver_data;
207 return 0;
208}
209
210static struct quirk_entry quirk_unknown = {
211};
212
9991d9f2
CC		 213static struct quirk_entry quirk_acer_aspire_1520 = {
214 .brightness = -1,
215};
216
745a5d21
CC		 217static struct quirk_entry quirk_acer_travelmate_2490 = {
218 .mailled = 1,
219};
220
221/* This AMW0 laptop has no bluetooth */
222static struct quirk_entry quirk_medion_md_98300 = {
223 .wireless = 1,
224};
225
6f061ab5
CC		 226static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
227 .wireless = 2,
228};
229
745a5d21 230static struct dmi_system_id acer_quirks[] = {
9991d9f2
CC		 231 {
232 .callback = dmi_matched,
233 .ident = "Acer Aspire 1360",
234 .matches = {
235 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
236 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
237 },
238 .driver_data = &quirk_acer_aspire_1520,
239 },
240 {
241 .callback = dmi_matched,
242 .ident = "Acer Aspire 1520",
243 .matches = {
244 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
245 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
246 },
247 .driver_data = &quirk_acer_aspire_1520,
248 },
745a5d21
CC		 249 {
250 .callback = dmi_matched,
251 .ident = "Acer Aspire 3100",
252 .matches = {
253 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
254 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
255 },
256 .driver_data = &quirk_acer_travelmate_2490,
257 },
ed9cfe98
CC		 258 {
259 .callback = dmi_matched,
260 .ident = "Acer Aspire 3610",
261 .matches = {
262 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
263 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
264 },
265 .driver_data = &quirk_acer_travelmate_2490,
266 },
745a5d21
CC		 267 {
268 .callback = dmi_matched,
269 .ident = "Acer Aspire 5100",
270 .matches = {
271 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
272 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
273 },
274 .driver_data = &quirk_acer_travelmate_2490,
275 },
ed9cfe98
CC		 276 {
277 .callback = dmi_matched,
278 .ident = "Acer Aspire 5610",
279 .matches = {
280 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
281 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
282 },
283 .driver_data = &quirk_acer_travelmate_2490,
284 },
745a5d21
CC		 285 {
286 .callback = dmi_matched,
287 .ident = "Acer Aspire 5630",
288 .matches = {
289 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
290 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
291 },
292 .driver_data = &quirk_acer_travelmate_2490,
293 },
294 {
295 .callback = dmi_matched,
296 .ident = "Acer Aspire 5650",
297 .matches = {
298 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
299 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
300 },
301 .driver_data = &quirk_acer_travelmate_2490,
302 },
303 {
304 .callback = dmi_matched,
305 .ident = "Acer Aspire 5680",
306 .matches = {
307 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
308 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
309 },
310 .driver_data = &quirk_acer_travelmate_2490,
311 },
312 {
313 .callback = dmi_matched,
314 .ident = "Acer Aspire 9110",
315 .matches = {
316 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
317 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
318 },
319 .driver_data = &quirk_acer_travelmate_2490,
320 },
321 {
322 .callback = dmi_matched,
323 .ident = "Acer TravelMate 2490",
324 .matches = {
325 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
326 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
327 },
328 .driver_data = &quirk_acer_travelmate_2490,
329 },
262ee35b
CC		 330 {
331 .callback = dmi_matched,
332 .ident = "Acer TravelMate 4200",
333 .matches = {
334 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
335 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
336 },
337 .driver_data = &quirk_acer_travelmate_2490,
338 },
6f061ab5
CC		 339 {
340 .callback = dmi_matched,
341 .ident = "Fujitsu Siemens Amilo Li 1718",
342 .matches = {
343 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
344 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
345 },
346 .driver_data = &quirk_fujitsu_amilo_li_1718,
347 },
745a5d21
CC		 348 {
349 .callback = dmi_matched,
350 .ident = "Medion MD 98300",
351 .matches = {
352 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
353 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
354 },
355 .driver_data = &quirk_medion_md_98300,
356 },
357 {}
358};
359
360/* Find which quirks are needed for a particular vendor/ model pair */
361static void find_quirks(void)
362{
363 if (!force_series) {
364 dmi_check_system(acer_quirks);
365 } else if (force_series == 2490) {
366 quirks = &quirk_acer_travelmate_2490;
367 }
368
369 if (quirks == NULL)
370 quirks = &quirk_unknown;
371
372 set_quirks();
373}
374
375/*
376 * General interface convenience methods
377 */
378
379static bool has_cap(u32 cap)
380{
381 if ((interface->capability & cap) != 0)
382 return 1;
383
384 return 0;
385}
386
387/*
388 * AMW0 (V1) interface
389 */
390struct wmab_args {
391 u32 eax;
392 u32 ebx;
393 u32 ecx;
394 u32 edx;
395};
396
397struct wmab_ret {
398 u32 eax;
399 u32 ebx;
400 u32 ecx;
401 u32 edx;
402 u32 eex;
403};
404
405static acpi_status wmab_execute(struct wmab_args *regbuf,
406struct acpi_buffer *result)
407{
408 struct acpi_buffer input;
409 acpi_status status;
410 input.length = sizeof(struct wmab_args);
411 input.pointer = (u8 *)regbuf;
412
413 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
414
415 return status;
416}
417
418static acpi_status AMW0_get_u32(u32 *value, u32 cap,
419struct wmi_interface *iface)
420{
421 int err;
422 u8 result;
423
424 switch (cap) {
425 case ACER_CAP_MAILLED:
426 switch (quirks->mailled) {
427 default:
428 err = ec_read(0xA, &result);
429 if (err)
430 return AE_ERROR;
431 *value = (result >> 7) & 0x1;
432 return AE_OK;
433 }
434 break;
435 case ACER_CAP_WIRELESS:
436 switch (quirks->wireless) {
437 case 1:
438 err = ec_read(0x7B, &result);
439 if (err)
440 return AE_ERROR;
441 *value = result & 0x1;
442 return AE_OK;
6f061ab5
CC		 443 case 2:
444 err = ec_read(0x71, &result);
445 if (err)
446 return AE_ERROR;
447 *value = result & 0x1;
448 return AE_OK;
745a5d21
CC		 449 default:
450 err = ec_read(0xA, &result);
451 if (err)
452 return AE_ERROR;
453 *value = (result >> 2) & 0x1;
454 return AE_OK;
455 }
456 break;
457 case ACER_CAP_BLUETOOTH:
458 switch (quirks->bluetooth) {
459 default:
460 err = ec_read(0xA, &result);
461 if (err)
462 return AE_ERROR;
463 *value = (result >> 4) & 0x1;
464 return AE_OK;
465 }
466 break;
467 case ACER_CAP_BRIGHTNESS:
468 switch (quirks->brightness) {
469 default:
470 err = ec_read(0x83, &result);
471 if (err)
472 return AE_ERROR;
473 *value = result;
474 return AE_OK;
475 }
476 break;
477 default:
478 return AE_BAD_ADDRESS;
479 }
480 return AE_OK;
481}
482
483static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
484{
485 struct wmab_args args;
486
487 args.eax = ACER_AMW0_WRITE;
488 args.ebx = value ? (1<<8) : 0;
489 args.ecx = args.edx = 0;
490
491 switch (cap) {
492 case ACER_CAP_MAILLED:
493 if (value > 1)
494 return AE_BAD_PARAMETER;
495 args.ebx |= ACER_AMW0_MAILLED_MASK;
496 break;
497 case ACER_CAP_WIRELESS:
498 if (value > 1)
499 return AE_BAD_PARAMETER;
500 args.ebx |= ACER_AMW0_WIRELESS_MASK;
501 break;
502 case ACER_CAP_BLUETOOTH:
503 if (value > 1)
504 return AE_BAD_PARAMETER;
505 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
506 break;
507 case ACER_CAP_BRIGHTNESS:
508 if (value > max_brightness)
509 return AE_BAD_PARAMETER;
510 switch (quirks->brightness) {
745a5d21 511 default:
4609d029
CC		 512 return ec_write(0x83, value);
513 break;
745a5d21
CC		 514 }
515 default:
516 return AE_BAD_ADDRESS;
517 }
518
519 /* Actually do the set */
520 return wmab_execute(&args, NULL);
521}
522
523static acpi_status AMW0_find_mailled(void)
524{
525 struct wmab_args args;
526 struct wmab_ret ret;
527 acpi_status status = AE_OK;
528 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
529 union acpi_object *obj;
530
531 args.eax = 0x86;
532 args.ebx = args.ecx = args.edx = 0;
533
534 status = wmab_execute(&args, &out);
535 if (ACPI_FAILURE(status))
536 return status;
537
538 obj = (union acpi_object *) out.pointer;
539 if (obj && obj->type == ACPI_TYPE_BUFFER &&
540 obj->buffer.length == sizeof(struct wmab_ret)) {
541 ret = *((struct wmab_ret *) obj->buffer.pointer);
542 } else {
543 return AE_ERROR;
544 }
545
546 if (ret.eex & 0x1)
547 interface->capability |= ACER_CAP_MAILLED;
548
549 kfree(out.pointer);
550
551 return AE_OK;
552}
553
554static acpi_status AMW0_set_capabilities(void)
555{
556 struct wmab_args args;
557 struct wmab_ret ret;
558 acpi_status status = AE_OK;
559 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
560 union acpi_object *obj;
561
5753dd53
CC		 562 /*
563 * On laptops with this strange GUID (non Acer), normal probing doesn't
564 * work.
565 */
566 if (wmi_has_guid(AMW0_GUID2)) {
567 interface->capability |= ACER_CAP_WIRELESS;
568 return AE_OK;
569 }
570
745a5d21
CC		 571 args.eax = ACER_AMW0_WRITE;
572 args.ecx = args.edx = 0;
573
574 args.ebx = 0xa2 << 8;
575 args.ebx |= ACER_AMW0_WIRELESS_MASK;
576
577 status = wmab_execute(&args, &out);
578 if (ACPI_FAILURE(status))
579 return status;
580
581 obj = (union acpi_object *) out.pointer;
582 if (obj && obj->type == ACPI_TYPE_BUFFER &&
583 obj->buffer.length == sizeof(struct wmab_ret)) {
584 ret = *((struct wmab_ret *) obj->buffer.pointer);
585 } else {
586 return AE_ERROR;
587 }
588
589 if (ret.eax & 0x1)
590 interface->capability |= ACER_CAP_WIRELESS;
591
592 args.ebx = 2 << 8;
593 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
594
595 status = wmab_execute(&args, &out);
596 if (ACPI_FAILURE(status))
597 return status;
598
599 obj = (union acpi_object *) out.pointer;
600 if (obj && obj->type == ACPI_TYPE_BUFFER
601 && obj->buffer.length == sizeof(struct wmab_ret)) {
602 ret = *((struct wmab_ret *) obj->buffer.pointer);
603 } else {
604 return AE_ERROR;
605 }
606
607 if (ret.eax & 0x1)
608 interface->capability |= ACER_CAP_BLUETOOTH;
609
610 kfree(out.pointer);
611
612 /*
613 * This appears to be safe to enable, since all Wistron based laptops
614 * appear to use the same EC register for brightness, even if they
615 * differ for wireless, etc
616 */
9991d9f2
CC		 617 if (quirks->brightness >= 0)
618 interface->capability |= ACER_CAP_BRIGHTNESS;
745a5d21
CC		 619
620 return AE_OK;
621}
622
623static struct wmi_interface AMW0_interface = {
624 .type = ACER_AMW0,
625};
626
627static struct wmi_interface AMW0_V2_interface = {
628 .type = ACER_AMW0_V2,
629};
630
631/*
632 * New interface (The WMID interface)
633 */
634static acpi_status
635WMI_execute_u32(u32 method_id, u32 in, u32 *out)
636{
637 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
638 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
639 union acpi_object *obj;
640 u32 tmp;
641 acpi_status status;
642
643 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
644
645 if (ACPI_FAILURE(status))
646 return status;
647
648 obj = (union acpi_object *) result.pointer;
649 if (obj && obj->type == ACPI_TYPE_BUFFER &&
650 obj->buffer.length == sizeof(u32)) {
651 tmp = *((u32 *) obj->buffer.pointer);
652 } else {
653 tmp = 0;
654 }
655
656 if (out)
657 *out = tmp;
658
659 kfree(result.pointer);
660
661 return status;
662}
663
664static acpi_status WMID_get_u32(u32 *value, u32 cap,
665struct wmi_interface *iface)
666{
667 acpi_status status;
668 u8 tmp;
669 u32 result, method_id = 0;
670
671 switch (cap) {
672 case ACER_CAP_WIRELESS:
673 method_id = ACER_WMID_GET_WIRELESS_METHODID;
674 break;
675 case ACER_CAP_BLUETOOTH:
676 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
677 break;
678 case ACER_CAP_BRIGHTNESS:
679 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
680 break;
681 case ACER_CAP_THREEG:
682 method_id = ACER_WMID_GET_THREEG_METHODID;
683 break;
684 case ACER_CAP_MAILLED:
685 if (quirks->mailled == 1) {
686 ec_read(0x9f, &tmp);
687 *value = tmp & 0x1;
688 return 0;
689 }
690 default:
691 return AE_BAD_ADDRESS;
692 }
693 status = WMI_execute_u32(method_id, 0, &result);
694
695 if (ACPI_SUCCESS(status))
696 *value = (u8)result;
697
698 return status;
699}
700
701static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
702{
703 u32 method_id = 0;
704 char param;
705
706 switch (cap) {
707 case ACER_CAP_BRIGHTNESS:
708 if (value > max_brightness)
709 return AE_BAD_PARAMETER;
710 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
711 break;
712 case ACER_CAP_WIRELESS:
713 if (value > 1)
714 return AE_BAD_PARAMETER;
715 method_id = ACER_WMID_SET_WIRELESS_METHODID;
716 break;
717 case ACER_CAP_BLUETOOTH:
718 if (value > 1)
719 return AE_BAD_PARAMETER;
720 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
721 break;
722 case ACER_CAP_THREEG:
723 if (value > 1)
724 return AE_BAD_PARAMETER;
725 method_id = ACER_WMID_SET_THREEG_METHODID;
726 break;
727 case ACER_CAP_MAILLED:
728 if (value > 1)
729 return AE_BAD_PARAMETER;
730 if (quirks->mailled == 1) {
731 param = value ? 0x92 : 0x93;
732 i8042_command(&param, 0x1059);
733 return 0;
734 }
735 break;
736 default:
737 return AE_BAD_ADDRESS;
738 }
739 return WMI_execute_u32(method_id, (u32)value, NULL);
740}
741
742static acpi_status WMID_set_capabilities(void)
743{
744 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
745 union acpi_object *obj;
746 acpi_status status;
747 u32 devices;
748
749 status = wmi_query_block(WMID_GUID2, 1, &out);
750 if (ACPI_FAILURE(status))
751 return status;
752
753 obj = (union acpi_object *) out.pointer;
754 if (obj && obj->type == ACPI_TYPE_BUFFER &&
755 obj->buffer.length == sizeof(u32)) {
756 devices = *((u32 *) obj->buffer.pointer);
757 } else {
758 return AE_ERROR;
759 }
760
761 /* Not sure on the meaning of the relevant bits yet to detect these */
762 interface->capability |= ACER_CAP_WIRELESS;
763 interface->capability |= ACER_CAP_THREEG;
764
765 /* WMID always provides brightness methods */
766 interface->capability |= ACER_CAP_BRIGHTNESS;
767
768 if (devices & 0x10)
769 interface->capability |= ACER_CAP_BLUETOOTH;
770
771 if (!(devices & 0x20))
772 max_brightness = 0x9;
773
774 return status;
775}
776
777static struct wmi_interface wmid_interface = {
778 .type = ACER_WMID,
779};
780
781/*
782 * Generic Device (interface-independent)
783 */
784
785static acpi_status get_u32(u32 *value, u32 cap)
786{
787 acpi_status status = AE_BAD_ADDRESS;
788
789 switch (interface->type) {
790 case ACER_AMW0:
791 status = AMW0_get_u32(value, cap, interface);
792 break;
793 case ACER_AMW0_V2:
794 if (cap == ACER_CAP_MAILLED) {
795 status = AMW0_get_u32(value, cap, interface);
796 break;
797 }
798 case ACER_WMID:
799 status = WMID_get_u32(value, cap, interface);
800 break;
801 }
802
803 return status;
804}
805
806static acpi_status set_u32(u32 value, u32 cap)
807{
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:
813 case ACER_WMID:
814 return WMID_set_u32(value, cap, interface);
815 default:
816 return AE_BAD_PARAMETER;
817 }
818 }
819 return AE_BAD_PARAMETER;
820}
821
822static void __init acer_commandline_init(void)
823{
824 /*
825 * These will all fail silently if the value given is invalid, or the
826 * capability isn't available on the given interface
827 */
828 set_u32(mailled, ACER_CAP_MAILLED);
829 set_u32(wireless, ACER_CAP_WIRELESS);
830 set_u32(bluetooth, ACER_CAP_BLUETOOTH);
831 set_u32(threeg, ACER_CAP_THREEG);
832 set_u32(brightness, ACER_CAP_BRIGHTNESS);
833}
834
835/*
836 * LED device (Mail LED only, no other LEDs known yet)
837 */
838static void mail_led_set(struct led_classdev *led_cdev,
839enum led_brightness value)
840{
841 set_u32(value, ACER_CAP_MAILLED);
842}
843
844static struct led_classdev mail_led = {
343c0042 845 .name = "acer-wmi::mail",
745a5d21
CC		 846 .brightness_set = mail_led_set,
847};
848
7560e385 849static int __devinit acer_led_init(struct device *dev)
745a5d21
CC		 850{
851 return led_classdev_register(dev, &mail_led);
852}
853
854static void acer_led_exit(void)
855{
856 led_classdev_unregister(&mail_led);
857}
858
859/*
860 * Backlight device
861 */
862static struct backlight_device *acer_backlight_device;
863
864static int read_brightness(struct backlight_device *bd)
865{
866 u32 value;
867 get_u32(&value, ACER_CAP_BRIGHTNESS);
868 return value;
869}
870
871static int update_bl_status(struct backlight_device *bd)
872{
f2b585b4
CC		 873 int intensity = bd->props.brightness;
874
875 if (bd->props.power != FB_BLANK_UNBLANK)
876 intensity = 0;
877 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
878 intensity = 0;
879
880 set_u32(intensity, ACER_CAP_BRIGHTNESS);
881
745a5d21
CC		 882 return 0;
883}
884
885static struct backlight_ops acer_bl_ops = {
886 .get_brightness = read_brightness,
887 .update_status = update_bl_status,
888};
889
7560e385 890static int __devinit acer_backlight_init(struct device *dev)
745a5d21
CC		 891{
892 struct backlight_device *bd;
893
894 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops);
895 if (IS_ERR(bd)) {
896 printk(ACER_ERR "Could not register Acer backlight device\n");
897 acer_backlight_device = NULL;
898 return PTR_ERR(bd);
899 }
900
901 acer_backlight_device = bd;
902
f2b585b4
CC		 903 bd->props.power = FB_BLANK_UNBLANK;
904 bd->props.brightness = max_brightness;
745a5d21 905 bd->props.max_brightness = max_brightness;
745a5d21
CC		 906 backlight_update_status(bd);
907 return 0;
908}
909
7560e385 910static void acer_backlight_exit(void)
745a5d21
CC		 911{
912 backlight_device_unregister(acer_backlight_device);
913}
914
915/*
916 * Read/ write bool sysfs macro
917 */
918#define show_set_bool(value, cap) \
919static ssize_t \
920show_bool_##value(struct device *dev, struct device_attribute *attr, \
921 char *buf) \
922{ \
923 u32 result; \
924 acpi_status status = get_u32(&result, cap); \
925 if (ACPI_SUCCESS(status)) \
926 return sprintf(buf, "%u\n", result); \
927 return sprintf(buf, "Read error\n"); \
928} \
929\
930static ssize_t \
931set_bool_##value(struct device *dev, struct device_attribute *attr, \
932 const char *buf, size_t count) \
933{ \
934 u32 tmp = simple_strtoul(buf, NULL, 10); \
935 acpi_status status = set_u32(tmp, cap); \
936 if (ACPI_FAILURE(status)) \
937 return -EINVAL; \
938 return count; \
939} \
940static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
941 show_bool_##value, set_bool_##value);
942
943show_set_bool(wireless, ACER_CAP_WIRELESS);
944show_set_bool(bluetooth, ACER_CAP_BLUETOOTH);
945show_set_bool(threeg, ACER_CAP_THREEG);
946
947/*
948 * Read interface sysfs macro
949 */
950static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
951 char *buf)
952{
953 switch (interface->type) {
954 case ACER_AMW0:
955 return sprintf(buf, "AMW0\n");
956 case ACER_AMW0_V2:
957 return sprintf(buf, "AMW0 v2\n");
958 case ACER_WMID:
959 return sprintf(buf, "WMID\n");
960 default:
961 return sprintf(buf, "Error!\n");
962 }
963}
964
965static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
966 show_interface, NULL);
967
81143522
CC		 968/*
969 * debugfs functions
970 */
971static u32 get_wmid_devices(void)
972{
973 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
974 union acpi_object *obj;
975 acpi_status status;
976
977 status = wmi_query_block(WMID_GUID2, 1, &out);
978 if (ACPI_FAILURE(status))
979 return 0;
980
981 obj = (union acpi_object *) out.pointer;
982 if (obj && obj->type == ACPI_TYPE_BUFFER &&
983 obj->buffer.length == sizeof(u32)) {
984 return *((u32 *) obj->buffer.pointer);
985 } else {
986 return 0;
987 }
988}
989
745a5d21
CC		 990/*
991 * Platform device
992 */
993static int __devinit acer_platform_probe(struct platform_device *device)
994{
995 int err;
996
997 if (has_cap(ACER_CAP_MAILLED)) {
998 err = acer_led_init(&device->dev);
999 if (err)
1000 goto error_mailled;
1001 }
1002
1003 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1004 err = acer_backlight_init(&device->dev);
1005 if (err)
1006 goto error_brightness;
1007 }
1008
1009 return 0;
1010
1011error_brightness:
1012 acer_led_exit();
1013error_mailled:
1014 return err;
1015}
1016
1017static int acer_platform_remove(struct platform_device *device)
1018{
1019 if (has_cap(ACER_CAP_MAILLED))
1020 acer_led_exit();
1021 if (has_cap(ACER_CAP_BRIGHTNESS))
1022 acer_backlight_exit();
1023 return 0;
1024}
1025
1026static int acer_platform_suspend(struct platform_device *dev,
1027pm_message_t state)
1028{
1029 u32 value;
1030 struct acer_data *data = &interface->data;
1031
1032 if (!data)
1033 return -ENOMEM;
1034
1035 if (has_cap(ACER_CAP_WIRELESS)) {
1036 get_u32(&value, ACER_CAP_WIRELESS);
1037 data->wireless = value;
1038 }
1039
1040 if (has_cap(ACER_CAP_BLUETOOTH)) {
1041 get_u32(&value, ACER_CAP_BLUETOOTH);
1042 data->bluetooth = value;
1043 }
1044
1045 if (has_cap(ACER_CAP_MAILLED)) {
1046 get_u32(&value, ACER_CAP_MAILLED);
1047 data->mailled = value;
1048 }
1049
1050 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1051 get_u32(&value, ACER_CAP_BRIGHTNESS);
1052 data->brightness = value;
1053 }
1054
1055 return 0;
1056}
1057
1058static int acer_platform_resume(struct platform_device *device)
1059{
1060 struct acer_data *data = &interface->data;
1061
1062 if (!data)
1063 return -ENOMEM;
1064
1065 if (has_cap(ACER_CAP_WIRELESS))
1066 set_u32(data->wireless, ACER_CAP_WIRELESS);
1067
1068 if (has_cap(ACER_CAP_BLUETOOTH))
1069 set_u32(data->bluetooth, ACER_CAP_BLUETOOTH);
1070
1071 if (has_cap(ACER_CAP_THREEG))
1072 set_u32(data->threeg, ACER_CAP_THREEG);
1073
1074 if (has_cap(ACER_CAP_MAILLED))
1075 set_u32(data->mailled, ACER_CAP_MAILLED);
1076
1077 if (has_cap(ACER_CAP_BRIGHTNESS))
1078 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1079
1080 return 0;
1081}
1082
1083static struct platform_driver acer_platform_driver = {
1084 .driver = {
1085 .name = "acer-wmi",
1086 .owner = THIS_MODULE,
1087 },
1088 .probe = acer_platform_probe,
1089 .remove = acer_platform_remove,
1090 .suspend = acer_platform_suspend,
1091 .resume = acer_platform_resume,
1092};
1093
1094static struct platform_device *acer_platform_device;
1095
1096static int remove_sysfs(struct platform_device *device)
1097{
1098 if (has_cap(ACER_CAP_WIRELESS))
1099 device_remove_file(&device->dev, &dev_attr_wireless);
1100
1101 if (has_cap(ACER_CAP_BLUETOOTH))
1102 device_remove_file(&device->dev, &dev_attr_bluetooth);
1103
1104 if (has_cap(ACER_CAP_THREEG))
1105 device_remove_file(&device->dev, &dev_attr_threeg);
1106
1107 device_remove_file(&device->dev, &dev_attr_interface);
1108
1109 return 0;
1110}
1111
1112static int create_sysfs(void)
1113{
1114 int retval = -ENOMEM;
1115
1116 if (has_cap(ACER_CAP_WIRELESS)) {
1117 retval = device_create_file(&acer_platform_device->dev,
1118 &dev_attr_wireless);
1119 if (retval)
1120 goto error_sysfs;
1121 }
1122
1123 if (has_cap(ACER_CAP_BLUETOOTH)) {
1124 retval = device_create_file(&acer_platform_device->dev,
1125 &dev_attr_bluetooth);
1126 if (retval)
1127 goto error_sysfs;
1128 }
1129
1130 if (has_cap(ACER_CAP_THREEG)) {
1131 retval = device_create_file(&acer_platform_device->dev,
1132 &dev_attr_threeg);
1133 if (retval)
1134 goto error_sysfs;
1135 }
1136
1137 retval = device_create_file(&acer_platform_device->dev,
1138 &dev_attr_interface);
1139 if (retval)
1140 goto error_sysfs;
1141
1142 return 0;
1143
1144error_sysfs:
1145 remove_sysfs(acer_platform_device);
1146 return retval;
1147}
1148
81143522
CC		 1149static void remove_debugfs(void)
1150{
1151 debugfs_remove(interface->debug.devices);
1152 debugfs_remove(interface->debug.root);
1153}
1154
1155static int create_debugfs(void)
1156{
1157 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1158 if (!interface->debug.root) {
1159 printk(ACER_ERR "Failed to create debugfs directory");
1160 return -ENOMEM;
1161 }
1162
1163 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1164 interface->debug.root,
1165 &interface->debug.wmid_devices);
1166 if (!interface->debug.devices)
1167 goto error_debugfs;
1168
1169 return 0;
1170
1171error_debugfs:
1172 remove_debugfs();
1173 return -ENOMEM;
1174}
1175
745a5d21
CC		 1176static int __init acer_wmi_init(void)
1177{
1178 int err;
1179
1180 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras version %s\n",
1181 ACER_WMI_VERSION);
1182
9991d9f2
CC		 1183 find_quirks();
1184
745a5d21
CC		 1185 /*
1186 * Detect which ACPI-WMI interface we're using.
1187 */
1188 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1189 interface = &AMW0_V2_interface;
1190
1191 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1192 interface = &wmid_interface;
1193
1194 if (wmi_has_guid(WMID_GUID2) && interface) {
1195 if (ACPI_FAILURE(WMID_set_capabilities())) {
8d039bc7
CC		 1196 printk(ACER_ERR "Unable to detect available WMID "
1197 "devices\n");
745a5d21
CC		 1198 return -ENODEV;
1199 }
1200 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
8d039bc7 1201 printk(ACER_ERR "No WMID device detection method found\n");
745a5d21
CC		 1202 return -ENODEV;
1203 }
1204
1205 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1206 interface = &AMW0_interface;
1207
1208 if (ACPI_FAILURE(AMW0_set_capabilities())) {
8d039bc7
CC		 1209 printk(ACER_ERR "Unable to detect available AMW0 "
1210 "devices\n");
745a5d21
CC		 1211 return -ENODEV;
1212 }
1213 }
1214
9b963c40
CC		 1215 if (wmi_has_guid(AMW0_GUID1))
1216 AMW0_find_mailled();
745a5d21 1217
745a5d21 1218 if (!interface) {
8d039bc7
CC		 1219 printk(ACER_ERR "No or unsupported WMI interface, unable to "
1220 "load\n");
745a5d21
CC		 1221 return -ENODEV;
1222 }
1223
1224 if (platform_driver_register(&acer_platform_driver)) {
1225 printk(ACER_ERR "Unable to register platform driver.\n");
1226 goto error_platform_register;
1227 }
1228 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1229 platform_device_add(acer_platform_device);
1230
1231 err = create_sysfs();
1232 if (err)
1233 return err;
1234
81143522
CC		 1235 if (wmi_has_guid(WMID_GUID2)) {
1236 interface->debug.wmid_devices = get_wmid_devices();
1237 err = create_debugfs();
1238 if (err)
1239 return err;
1240 }
1241
745a5d21
CC		 1242 /* Override any initial settings with values from the commandline */
1243 acer_commandline_init();
1244
1245 return 0;
1246
1247error_platform_register:
1248 return -ENODEV;
1249}
1250
1251static void __exit acer_wmi_exit(void)
1252{
1253 remove_sysfs(acer_platform_device);
1254 platform_device_del(acer_platform_device);
1255 platform_driver_unregister(&acer_platform_driver);
1256
1257 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1258 return;
1259}
1260
1261module_init(acer_wmi_init);
1262module_exit(acer_wmi_exit);
Linux kernel - Deliverables
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