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acer-wmi: Add EC quirk for Fujitsu Siemens Amilo Li 1718
[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>
38
39#include <acpi/acpi_drivers.h>
40
41MODULE_AUTHOR("Carlos Corbacho");
42MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
43MODULE_LICENSE("GPL");
44
45#define ACER_LOGPREFIX "acer-wmi: "
46#define ACER_ERR KERN_ERR ACER_LOGPREFIX
47#define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
48#define ACER_INFO KERN_INFO ACER_LOGPREFIX
49
50/*
51 * The following defines quirks to get some specific functions to work
52 * which are known to not be supported over ACPI-WMI (such as the mail LED
53 * on WMID based Acer's)
54 */
55struct acer_quirks {
56 const char *vendor;
57 const char *model;
58 u16 quirks;
59};
60
61/*
62 * Magic Number
63 * Meaning is unknown - this number is required for writing to ACPI for AMW0
64 * (it's also used in acerhk when directly accessing the BIOS)
65 */
66#define ACER_AMW0_WRITE 0x9610
67
68/*
69 * Bit masks for the AMW0 interface
70 */
71#define ACER_AMW0_WIRELESS_MASK 0x35
72#define ACER_AMW0_BLUETOOTH_MASK 0x34
73#define ACER_AMW0_MAILLED_MASK 0x31
74
75/*
76 * Method IDs for WMID interface
77 */
78#define ACER_WMID_GET_WIRELESS_METHODID 1
79#define ACER_WMID_GET_BLUETOOTH_METHODID 2
80#define ACER_WMID_GET_BRIGHTNESS_METHODID 3
81#define ACER_WMID_SET_WIRELESS_METHODID 4
82#define ACER_WMID_SET_BLUETOOTH_METHODID 5
83#define ACER_WMID_SET_BRIGHTNESS_METHODID 6
84#define ACER_WMID_GET_THREEG_METHODID 10
85#define ACER_WMID_SET_THREEG_METHODID 11
86
87/*
88 * Acer ACPI method GUIDs
89 */
90#define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
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
154/* Each low-level interface must define at least some of the following */
155struct wmi_interface {
156 /* The WMI device type */
157 u32 type;
158
159 /* The capabilities this interface provides */
160 u32 capability;
161
162 /* Private data for the current interface */
163 struct acer_data data;
164};
165
166/* The static interface pointer, points to the currently detected interface */
167static struct wmi_interface *interface;
168
169/*
170 * Embedded Controller quirks
171 * Some laptops require us to directly access the EC to either enable or query
172 * features that are not available through WMI.
173 */
174
175struct quirk_entry {
176 u8 wireless;
177 u8 mailled;
9991d9f2 178 s8 brightness;
745a5d21
CC		 179 u8 bluetooth;
180};
181
182static struct quirk_entry *quirks;
183
184static void set_quirks(void)
185{
186 if (quirks->mailled)
187 interface->capability |= ACER_CAP_MAILLED;
188
189 if (quirks->brightness)
190 interface->capability |= ACER_CAP_BRIGHTNESS;
191}
192
193static int dmi_matched(const struct dmi_system_id *dmi)
194{
195 quirks = dmi->driver_data;
196 return 0;
197}
198
199static struct quirk_entry quirk_unknown = {
200};
201
9991d9f2
CC		 202static struct quirk_entry quirk_acer_aspire_1520 = {
203 .brightness = -1,
204};
205
745a5d21
CC		 206static struct quirk_entry quirk_acer_travelmate_2490 = {
207 .mailled = 1,
208};
209
210/* This AMW0 laptop has no bluetooth */
211static struct quirk_entry quirk_medion_md_98300 = {
212 .wireless = 1,
213};
214
6f061ab5
CC		 215static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
216 .wireless = 2,
217};
218
745a5d21 219static struct dmi_system_id acer_quirks[] = {
9991d9f2
CC		 220 {
221 .callback = dmi_matched,
222 .ident = "Acer Aspire 1360",
223 .matches = {
224 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
225 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
226 },
227 .driver_data = &quirk_acer_aspire_1520,
228 },
229 {
230 .callback = dmi_matched,
231 .ident = "Acer Aspire 1520",
232 .matches = {
233 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
234 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
235 },
236 .driver_data = &quirk_acer_aspire_1520,
237 },
745a5d21
CC		 238 {
239 .callback = dmi_matched,
240 .ident = "Acer Aspire 3100",
241 .matches = {
242 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
243 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
244 },
245 .driver_data = &quirk_acer_travelmate_2490,
246 },
ed9cfe98
CC		 247 {
248 .callback = dmi_matched,
249 .ident = "Acer Aspire 3610",
250 .matches = {
251 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
252 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
253 },
254 .driver_data = &quirk_acer_travelmate_2490,
255 },
745a5d21
CC		 256 {
257 .callback = dmi_matched,
258 .ident = "Acer Aspire 5100",
259 .matches = {
260 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
261 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
262 },
263 .driver_data = &quirk_acer_travelmate_2490,
264 },
ed9cfe98
CC		 265 {
266 .callback = dmi_matched,
267 .ident = "Acer Aspire 5610",
268 .matches = {
269 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
270 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
271 },
272 .driver_data = &quirk_acer_travelmate_2490,
273 },
745a5d21
CC		 274 {
275 .callback = dmi_matched,
276 .ident = "Acer Aspire 5630",
277 .matches = {
278 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
279 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
280 },
281 .driver_data = &quirk_acer_travelmate_2490,
282 },
283 {
284 .callback = dmi_matched,
285 .ident = "Acer Aspire 5650",
286 .matches = {
287 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
288 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
289 },
290 .driver_data = &quirk_acer_travelmate_2490,
291 },
292 {
293 .callback = dmi_matched,
294 .ident = "Acer Aspire 5680",
295 .matches = {
296 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
297 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
298 },
299 .driver_data = &quirk_acer_travelmate_2490,
300 },
301 {
302 .callback = dmi_matched,
303 .ident = "Acer Aspire 9110",
304 .matches = {
305 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
306 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
307 },
308 .driver_data = &quirk_acer_travelmate_2490,
309 },
310 {
311 .callback = dmi_matched,
312 .ident = "Acer TravelMate 2490",
313 .matches = {
314 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
315 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
316 },
317 .driver_data = &quirk_acer_travelmate_2490,
318 },
262ee35b
CC		 319 {
320 .callback = dmi_matched,
321 .ident = "Acer TravelMate 4200",
322 .matches = {
323 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
324 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
325 },
326 .driver_data = &quirk_acer_travelmate_2490,
327 },
6f061ab5
CC		 328 {
329 .callback = dmi_matched,
330 .ident = "Fujitsu Siemens Amilo Li 1718",
331 .matches = {
332 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
333 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
334 },
335 .driver_data = &quirk_fujitsu_amilo_li_1718,
336 },
745a5d21
CC		 337 {
338 .callback = dmi_matched,
339 .ident = "Medion MD 98300",
340 .matches = {
341 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
342 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
343 },
344 .driver_data = &quirk_medion_md_98300,
345 },
346 {}
347};
348
349/* Find which quirks are needed for a particular vendor/ model pair */
350static void find_quirks(void)
351{
352 if (!force_series) {
353 dmi_check_system(acer_quirks);
354 } else if (force_series == 2490) {
355 quirks = &quirk_acer_travelmate_2490;
356 }
357
358 if (quirks == NULL)
359 quirks = &quirk_unknown;
360
361 set_quirks();
362}
363
364/*
365 * General interface convenience methods
366 */
367
368static bool has_cap(u32 cap)
369{
370 if ((interface->capability & cap) != 0)
371 return 1;
372
373 return 0;
374}
375
376/*
377 * AMW0 (V1) interface
378 */
379struct wmab_args {
380 u32 eax;
381 u32 ebx;
382 u32 ecx;
383 u32 edx;
384};
385
386struct wmab_ret {
387 u32 eax;
388 u32 ebx;
389 u32 ecx;
390 u32 edx;
391 u32 eex;
392};
393
394static acpi_status wmab_execute(struct wmab_args *regbuf,
395struct acpi_buffer *result)
396{
397 struct acpi_buffer input;
398 acpi_status status;
399 input.length = sizeof(struct wmab_args);
400 input.pointer = (u8 *)regbuf;
401
402 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
403
404 return status;
405}
406
407static acpi_status AMW0_get_u32(u32 *value, u32 cap,
408struct wmi_interface *iface)
409{
410 int err;
411 u8 result;
412
413 switch (cap) {
414 case ACER_CAP_MAILLED:
415 switch (quirks->mailled) {
416 default:
417 err = ec_read(0xA, &result);
418 if (err)
419 return AE_ERROR;
420 *value = (result >> 7) & 0x1;
421 return AE_OK;
422 }
423 break;
424 case ACER_CAP_WIRELESS:
425 switch (quirks->wireless) {
426 case 1:
427 err = ec_read(0x7B, &result);
428 if (err)
429 return AE_ERROR;
430 *value = result & 0x1;
431 return AE_OK;
6f061ab5
CC		 432 case 2:
433 err = ec_read(0x71, &result);
434 if (err)
435 return AE_ERROR;
436 *value = result & 0x1;
437 return AE_OK;
745a5d21
CC		 438 default:
439 err = ec_read(0xA, &result);
440 if (err)
441 return AE_ERROR;
442 *value = (result >> 2) & 0x1;
443 return AE_OK;
444 }
445 break;
446 case ACER_CAP_BLUETOOTH:
447 switch (quirks->bluetooth) {
448 default:
449 err = ec_read(0xA, &result);
450 if (err)
451 return AE_ERROR;
452 *value = (result >> 4) & 0x1;
453 return AE_OK;
454 }
455 break;
456 case ACER_CAP_BRIGHTNESS:
457 switch (quirks->brightness) {
458 default:
459 err = ec_read(0x83, &result);
460 if (err)
461 return AE_ERROR;
462 *value = result;
463 return AE_OK;
464 }
465 break;
466 default:
467 return AE_BAD_ADDRESS;
468 }
469 return AE_OK;
470}
471
472static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
473{
474 struct wmab_args args;
475
476 args.eax = ACER_AMW0_WRITE;
477 args.ebx = value ? (1<<8) : 0;
478 args.ecx = args.edx = 0;
479
480 switch (cap) {
481 case ACER_CAP_MAILLED:
482 if (value > 1)
483 return AE_BAD_PARAMETER;
484 args.ebx |= ACER_AMW0_MAILLED_MASK;
485 break;
486 case ACER_CAP_WIRELESS:
487 if (value > 1)
488 return AE_BAD_PARAMETER;
489 args.ebx |= ACER_AMW0_WIRELESS_MASK;
490 break;
491 case ACER_CAP_BLUETOOTH:
492 if (value > 1)
493 return AE_BAD_PARAMETER;
494 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
495 break;
496 case ACER_CAP_BRIGHTNESS:
497 if (value > max_brightness)
498 return AE_BAD_PARAMETER;
499 switch (quirks->brightness) {
745a5d21 500 default:
4609d029
CC		 501 return ec_write(0x83, value);
502 break;
745a5d21
CC		 503 }
504 default:
505 return AE_BAD_ADDRESS;
506 }
507
508 /* Actually do the set */
509 return wmab_execute(&args, NULL);
510}
511
512static acpi_status AMW0_find_mailled(void)
513{
514 struct wmab_args args;
515 struct wmab_ret ret;
516 acpi_status status = AE_OK;
517 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
518 union acpi_object *obj;
519
520 args.eax = 0x86;
521 args.ebx = args.ecx = args.edx = 0;
522
523 status = wmab_execute(&args, &out);
524 if (ACPI_FAILURE(status))
525 return status;
526
527 obj = (union acpi_object *) out.pointer;
528 if (obj && obj->type == ACPI_TYPE_BUFFER &&
529 obj->buffer.length == sizeof(struct wmab_ret)) {
530 ret = *((struct wmab_ret *) obj->buffer.pointer);
531 } else {
532 return AE_ERROR;
533 }
534
535 if (ret.eex & 0x1)
536 interface->capability |= ACER_CAP_MAILLED;
537
538 kfree(out.pointer);
539
540 return AE_OK;
541}
542
543static acpi_status AMW0_set_capabilities(void)
544{
545 struct wmab_args args;
546 struct wmab_ret ret;
547 acpi_status status = AE_OK;
548 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
549 union acpi_object *obj;
550
551 args.eax = ACER_AMW0_WRITE;
552 args.ecx = args.edx = 0;
553
554 args.ebx = 0xa2 << 8;
555 args.ebx |= ACER_AMW0_WIRELESS_MASK;
556
557 status = wmab_execute(&args, &out);
558 if (ACPI_FAILURE(status))
559 return status;
560
561 obj = (union acpi_object *) out.pointer;
562 if (obj && obj->type == ACPI_TYPE_BUFFER &&
563 obj->buffer.length == sizeof(struct wmab_ret)) {
564 ret = *((struct wmab_ret *) obj->buffer.pointer);
565 } else {
566 return AE_ERROR;
567 }
568
569 if (ret.eax & 0x1)
570 interface->capability |= ACER_CAP_WIRELESS;
571
572 args.ebx = 2 << 8;
573 args.ebx |= ACER_AMW0_BLUETOOTH_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_BLUETOOTH;
589
590 kfree(out.pointer);
591
592 /*
593 * This appears to be safe to enable, since all Wistron based laptops
594 * appear to use the same EC register for brightness, even if they
595 * differ for wireless, etc
596 */
9991d9f2
CC		 597 if (quirks->brightness >= 0)
598 interface->capability |= ACER_CAP_BRIGHTNESS;
745a5d21
CC		 599
600 return AE_OK;
601}
602
603static struct wmi_interface AMW0_interface = {
604 .type = ACER_AMW0,
605};
606
607static struct wmi_interface AMW0_V2_interface = {
608 .type = ACER_AMW0_V2,
609};
610
611/*
612 * New interface (The WMID interface)
613 */
614static acpi_status
615WMI_execute_u32(u32 method_id, u32 in, u32 *out)
616{
617 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
618 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
619 union acpi_object *obj;
620 u32 tmp;
621 acpi_status status;
622
623 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
624
625 if (ACPI_FAILURE(status))
626 return status;
627
628 obj = (union acpi_object *) result.pointer;
629 if (obj && obj->type == ACPI_TYPE_BUFFER &&
630 obj->buffer.length == sizeof(u32)) {
631 tmp = *((u32 *) obj->buffer.pointer);
632 } else {
633 tmp = 0;
634 }
635
636 if (out)
637 *out = tmp;
638
639 kfree(result.pointer);
640
641 return status;
642}
643
644static acpi_status WMID_get_u32(u32 *value, u32 cap,
645struct wmi_interface *iface)
646{
647 acpi_status status;
648 u8 tmp;
649 u32 result, method_id = 0;
650
651 switch (cap) {
652 case ACER_CAP_WIRELESS:
653 method_id = ACER_WMID_GET_WIRELESS_METHODID;
654 break;
655 case ACER_CAP_BLUETOOTH:
656 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
657 break;
658 case ACER_CAP_BRIGHTNESS:
659 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
660 break;
661 case ACER_CAP_THREEG:
662 method_id = ACER_WMID_GET_THREEG_METHODID;
663 break;
664 case ACER_CAP_MAILLED:
665 if (quirks->mailled == 1) {
666 ec_read(0x9f, &tmp);
667 *value = tmp & 0x1;
668 return 0;
669 }
670 default:
671 return AE_BAD_ADDRESS;
672 }
673 status = WMI_execute_u32(method_id, 0, &result);
674
675 if (ACPI_SUCCESS(status))
676 *value = (u8)result;
677
678 return status;
679}
680
681static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
682{
683 u32 method_id = 0;
684 char param;
685
686 switch (cap) {
687 case ACER_CAP_BRIGHTNESS:
688 if (value > max_brightness)
689 return AE_BAD_PARAMETER;
690 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
691 break;
692 case ACER_CAP_WIRELESS:
693 if (value > 1)
694 return AE_BAD_PARAMETER;
695 method_id = ACER_WMID_SET_WIRELESS_METHODID;
696 break;
697 case ACER_CAP_BLUETOOTH:
698 if (value > 1)
699 return AE_BAD_PARAMETER;
700 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
701 break;
702 case ACER_CAP_THREEG:
703 if (value > 1)
704 return AE_BAD_PARAMETER;
705 method_id = ACER_WMID_SET_THREEG_METHODID;
706 break;
707 case ACER_CAP_MAILLED:
708 if (value > 1)
709 return AE_BAD_PARAMETER;
710 if (quirks->mailled == 1) {
711 param = value ? 0x92 : 0x93;
712 i8042_command(&param, 0x1059);
713 return 0;
714 }
715 break;
716 default:
717 return AE_BAD_ADDRESS;
718 }
719 return WMI_execute_u32(method_id, (u32)value, NULL);
720}
721
722static acpi_status WMID_set_capabilities(void)
723{
724 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
725 union acpi_object *obj;
726 acpi_status status;
727 u32 devices;
728
729 status = wmi_query_block(WMID_GUID2, 1, &out);
730 if (ACPI_FAILURE(status))
731 return status;
732
733 obj = (union acpi_object *) out.pointer;
734 if (obj && obj->type == ACPI_TYPE_BUFFER &&
735 obj->buffer.length == sizeof(u32)) {
736 devices = *((u32 *) obj->buffer.pointer);
737 } else {
738 return AE_ERROR;
739 }
740
741 /* Not sure on the meaning of the relevant bits yet to detect these */
742 interface->capability |= ACER_CAP_WIRELESS;
743 interface->capability |= ACER_CAP_THREEG;
744
745 /* WMID always provides brightness methods */
746 interface->capability |= ACER_CAP_BRIGHTNESS;
747
748 if (devices & 0x10)
749 interface->capability |= ACER_CAP_BLUETOOTH;
750
751 if (!(devices & 0x20))
752 max_brightness = 0x9;
753
754 return status;
755}
756
757static struct wmi_interface wmid_interface = {
758 .type = ACER_WMID,
759};
760
761/*
762 * Generic Device (interface-independent)
763 */
764
765static acpi_status get_u32(u32 *value, u32 cap)
766{
767 acpi_status status = AE_BAD_ADDRESS;
768
769 switch (interface->type) {
770 case ACER_AMW0:
771 status = AMW0_get_u32(value, cap, interface);
772 break;
773 case ACER_AMW0_V2:
774 if (cap == ACER_CAP_MAILLED) {
775 status = AMW0_get_u32(value, cap, interface);
776 break;
777 }
778 case ACER_WMID:
779 status = WMID_get_u32(value, cap, interface);
780 break;
781 }
782
783 return status;
784}
785
786static acpi_status set_u32(u32 value, u32 cap)
787{
788 if (interface->capability & cap) {
789 switch (interface->type) {
790 case ACER_AMW0:
791 return AMW0_set_u32(value, cap, interface);
792 case ACER_AMW0_V2:
793 case ACER_WMID:
794 return WMID_set_u32(value, cap, interface);
795 default:
796 return AE_BAD_PARAMETER;
797 }
798 }
799 return AE_BAD_PARAMETER;
800}
801
802static void __init acer_commandline_init(void)
803{
804 /*
805 * These will all fail silently if the value given is invalid, or the
806 * capability isn't available on the given interface
807 */
808 set_u32(mailled, ACER_CAP_MAILLED);
809 set_u32(wireless, ACER_CAP_WIRELESS);
810 set_u32(bluetooth, ACER_CAP_BLUETOOTH);
811 set_u32(threeg, ACER_CAP_THREEG);
812 set_u32(brightness, ACER_CAP_BRIGHTNESS);
813}
814
815/*
816 * LED device (Mail LED only, no other LEDs known yet)
817 */
818static void mail_led_set(struct led_classdev *led_cdev,
819enum led_brightness value)
820{
821 set_u32(value, ACER_CAP_MAILLED);
822}
823
824static struct led_classdev mail_led = {
343c0042 825 .name = "acer-wmi::mail",
745a5d21
CC		 826 .brightness_set = mail_led_set,
827};
828
7560e385 829static int __devinit acer_led_init(struct device *dev)
745a5d21
CC		 830{
831 return led_classdev_register(dev, &mail_led);
832}
833
834static void acer_led_exit(void)
835{
836 led_classdev_unregister(&mail_led);
837}
838
839/*
840 * Backlight device
841 */
842static struct backlight_device *acer_backlight_device;
843
844static int read_brightness(struct backlight_device *bd)
845{
846 u32 value;
847 get_u32(&value, ACER_CAP_BRIGHTNESS);
848 return value;
849}
850
851static int update_bl_status(struct backlight_device *bd)
852{
f2b585b4
CC		 853 int intensity = bd->props.brightness;
854
855 if (bd->props.power != FB_BLANK_UNBLANK)
856 intensity = 0;
857 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
858 intensity = 0;
859
860 set_u32(intensity, ACER_CAP_BRIGHTNESS);
861
745a5d21
CC		 862 return 0;
863}
864
865static struct backlight_ops acer_bl_ops = {
866 .get_brightness = read_brightness,
867 .update_status = update_bl_status,
868};
869
7560e385 870static int __devinit acer_backlight_init(struct device *dev)
745a5d21
CC		 871{
872 struct backlight_device *bd;
873
874 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops);
875 if (IS_ERR(bd)) {
876 printk(ACER_ERR "Could not register Acer backlight device\n");
877 acer_backlight_device = NULL;
878 return PTR_ERR(bd);
879 }
880
881 acer_backlight_device = bd;
882
f2b585b4
CC		 883 bd->props.power = FB_BLANK_UNBLANK;
884 bd->props.brightness = max_brightness;
745a5d21 885 bd->props.max_brightness = max_brightness;
745a5d21
CC		 886 backlight_update_status(bd);
887 return 0;
888}
889
7560e385 890static void acer_backlight_exit(void)
745a5d21
CC		 891{
892 backlight_device_unregister(acer_backlight_device);
893}
894
895/*
896 * Read/ write bool sysfs macro
897 */
898#define show_set_bool(value, cap) \
899static ssize_t \
900show_bool_##value(struct device *dev, struct device_attribute *attr, \
901 char *buf) \
902{ \
903 u32 result; \
904 acpi_status status = get_u32(&result, cap); \
905 if (ACPI_SUCCESS(status)) \
906 return sprintf(buf, "%u\n", result); \
907 return sprintf(buf, "Read error\n"); \
908} \
909\
910static ssize_t \
911set_bool_##value(struct device *dev, struct device_attribute *attr, \
912 const char *buf, size_t count) \
913{ \
914 u32 tmp = simple_strtoul(buf, NULL, 10); \
915 acpi_status status = set_u32(tmp, cap); \
916 if (ACPI_FAILURE(status)) \
917 return -EINVAL; \
918 return count; \
919} \
920static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
921 show_bool_##value, set_bool_##value);
922
923show_set_bool(wireless, ACER_CAP_WIRELESS);
924show_set_bool(bluetooth, ACER_CAP_BLUETOOTH);
925show_set_bool(threeg, ACER_CAP_THREEG);
926
927/*
928 * Read interface sysfs macro
929 */
930static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
931 char *buf)
932{
933 switch (interface->type) {
934 case ACER_AMW0:
935 return sprintf(buf, "AMW0\n");
936 case ACER_AMW0_V2:
937 return sprintf(buf, "AMW0 v2\n");
938 case ACER_WMID:
939 return sprintf(buf, "WMID\n");
940 default:
941 return sprintf(buf, "Error!\n");
942 }
943}
944
945static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
946 show_interface, NULL);
947
948/*
949 * Platform device
950 */
951static int __devinit acer_platform_probe(struct platform_device *device)
952{
953 int err;
954
955 if (has_cap(ACER_CAP_MAILLED)) {
956 err = acer_led_init(&device->dev);
957 if (err)
958 goto error_mailled;
959 }
960
961 if (has_cap(ACER_CAP_BRIGHTNESS)) {
962 err = acer_backlight_init(&device->dev);
963 if (err)
964 goto error_brightness;
965 }
966
967 return 0;
968
969error_brightness:
970 acer_led_exit();
971error_mailled:
972 return err;
973}
974
975static int acer_platform_remove(struct platform_device *device)
976{
977 if (has_cap(ACER_CAP_MAILLED))
978 acer_led_exit();
979 if (has_cap(ACER_CAP_BRIGHTNESS))
980 acer_backlight_exit();
981 return 0;
982}
983
984static int acer_platform_suspend(struct platform_device *dev,
985pm_message_t state)
986{
987 u32 value;
988 struct acer_data *data = &interface->data;
989
990 if (!data)
991 return -ENOMEM;
992
993 if (has_cap(ACER_CAP_WIRELESS)) {
994 get_u32(&value, ACER_CAP_WIRELESS);
995 data->wireless = value;
996 }
997
998 if (has_cap(ACER_CAP_BLUETOOTH)) {
999 get_u32(&value, ACER_CAP_BLUETOOTH);
1000 data->bluetooth = value;
1001 }
1002
1003 if (has_cap(ACER_CAP_MAILLED)) {
1004 get_u32(&value, ACER_CAP_MAILLED);
1005 data->mailled = value;
1006 }
1007
1008 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1009 get_u32(&value, ACER_CAP_BRIGHTNESS);
1010 data->brightness = value;
1011 }
1012
1013 return 0;
1014}
1015
1016static int acer_platform_resume(struct platform_device *device)
1017{
1018 struct acer_data *data = &interface->data;
1019
1020 if (!data)
1021 return -ENOMEM;
1022
1023 if (has_cap(ACER_CAP_WIRELESS))
1024 set_u32(data->wireless, ACER_CAP_WIRELESS);
1025
1026 if (has_cap(ACER_CAP_BLUETOOTH))
1027 set_u32(data->bluetooth, ACER_CAP_BLUETOOTH);
1028
1029 if (has_cap(ACER_CAP_THREEG))
1030 set_u32(data->threeg, ACER_CAP_THREEG);
1031
1032 if (has_cap(ACER_CAP_MAILLED))
1033 set_u32(data->mailled, ACER_CAP_MAILLED);
1034
1035 if (has_cap(ACER_CAP_BRIGHTNESS))
1036 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1037
1038 return 0;
1039}
1040
1041static struct platform_driver acer_platform_driver = {
1042 .driver = {
1043 .name = "acer-wmi",
1044 .owner = THIS_MODULE,
1045 },
1046 .probe = acer_platform_probe,
1047 .remove = acer_platform_remove,
1048 .suspend = acer_platform_suspend,
1049 .resume = acer_platform_resume,
1050};
1051
1052static struct platform_device *acer_platform_device;
1053
1054static int remove_sysfs(struct platform_device *device)
1055{
1056 if (has_cap(ACER_CAP_WIRELESS))
1057 device_remove_file(&device->dev, &dev_attr_wireless);
1058
1059 if (has_cap(ACER_CAP_BLUETOOTH))
1060 device_remove_file(&device->dev, &dev_attr_bluetooth);
1061
1062 if (has_cap(ACER_CAP_THREEG))
1063 device_remove_file(&device->dev, &dev_attr_threeg);
1064
1065 device_remove_file(&device->dev, &dev_attr_interface);
1066
1067 return 0;
1068}
1069
1070static int create_sysfs(void)
1071{
1072 int retval = -ENOMEM;
1073
1074 if (has_cap(ACER_CAP_WIRELESS)) {
1075 retval = device_create_file(&acer_platform_device->dev,
1076 &dev_attr_wireless);
1077 if (retval)
1078 goto error_sysfs;
1079 }
1080
1081 if (has_cap(ACER_CAP_BLUETOOTH)) {
1082 retval = device_create_file(&acer_platform_device->dev,
1083 &dev_attr_bluetooth);
1084 if (retval)
1085 goto error_sysfs;
1086 }
1087
1088 if (has_cap(ACER_CAP_THREEG)) {
1089 retval = device_create_file(&acer_platform_device->dev,
1090 &dev_attr_threeg);
1091 if (retval)
1092 goto error_sysfs;
1093 }
1094
1095 retval = device_create_file(&acer_platform_device->dev,
1096 &dev_attr_interface);
1097 if (retval)
1098 goto error_sysfs;
1099
1100 return 0;
1101
1102error_sysfs:
1103 remove_sysfs(acer_platform_device);
1104 return retval;
1105}
1106
1107static int __init acer_wmi_init(void)
1108{
1109 int err;
1110
1111 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras version %s\n",
1112 ACER_WMI_VERSION);
1113
9991d9f2
CC		 1114 find_quirks();
1115
745a5d21
CC		 1116 /*
1117 * Detect which ACPI-WMI interface we're using.
1118 */
1119 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1120 interface = &AMW0_V2_interface;
1121
1122 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1123 interface = &wmid_interface;
1124
1125 if (wmi_has_guid(WMID_GUID2) && interface) {
1126 if (ACPI_FAILURE(WMID_set_capabilities())) {
8d039bc7
CC		 1127 printk(ACER_ERR "Unable to detect available WMID "
1128 "devices\n");
745a5d21
CC		 1129 return -ENODEV;
1130 }
1131 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
8d039bc7 1132 printk(ACER_ERR "No WMID device detection method found\n");
745a5d21
CC		 1133 return -ENODEV;
1134 }
1135
1136 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1137 interface = &AMW0_interface;
1138
1139 if (ACPI_FAILURE(AMW0_set_capabilities())) {
8d039bc7
CC		 1140 printk(ACER_ERR "Unable to detect available AMW0 "
1141 "devices\n");
745a5d21
CC		 1142 return -ENODEV;
1143 }
1144 }
1145
9b963c40
CC		 1146 if (wmi_has_guid(AMW0_GUID1))
1147 AMW0_find_mailled();
745a5d21 1148
745a5d21 1149 if (!interface) {
8d039bc7
CC		 1150 printk(ACER_ERR "No or unsupported WMI interface, unable to "
1151 "load\n");
745a5d21
CC		 1152 return -ENODEV;
1153 }
1154
1155 if (platform_driver_register(&acer_platform_driver)) {
1156 printk(ACER_ERR "Unable to register platform driver.\n");
1157 goto error_platform_register;
1158 }
1159 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1160 platform_device_add(acer_platform_device);
1161
1162 err = create_sysfs();
1163 if (err)
1164 return err;
1165
1166 /* Override any initial settings with values from the commandline */
1167 acer_commandline_init();
1168
1169 return 0;
1170
1171error_platform_register:
1172 return -ENODEV;
1173}
1174
1175static void __exit acer_wmi_exit(void)
1176{
1177 remove_sysfs(acer_platform_device);
1178 platform_device_del(acer_platform_device);
1179 platform_driver_unregister(&acer_platform_driver);
1180
1181 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1182 return;
1183}
1184
1185module_init(acer_wmi_init);
1186module_exit(acer_wmi_exit);
Linux kernel - Deliverables
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