1 /*
2 * Acer WMI Laptop Extras
3 *
4 * Copyright (C) 2007-2009 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 #include <linux/kernel.h>
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/types.h>
29 #include <linux/dmi.h>
30 #include <linux/fb.h>
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>
36 #include <linux/rfkill.h>
37 #include <linux/workqueue.h>
38 #include <linux/debugfs.h>
39
40 #include <acpi/acpi_drivers.h>
41
42 MODULE_AUTHOR("Carlos Corbacho");
43 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
44 MODULE_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 */
56 struct 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"
92 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
93 #define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
94 #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
95
96 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
97 MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
98
99 /* Temporary workaround until the WMI sysfs interface goes in */
100 MODULE_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 */
115 enum 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
126 static int max_brightness = 0xF;
127
128 static int mailled = -1;
129 static int brightness = -1;
130 static int threeg = -1;
131 static int force_series;
132
133 module_param(mailled, int, 0444);
134 module_param(brightness, int, 0444);
135 module_param(threeg, int, 0444);
136 module_param(force_series, int, 0444);
137 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
138 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
139 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
140 MODULE_PARM_DESC(force_series, "Force a different laptop series");
141
142 struct acer_data {
143 int mailled;
144 int threeg;
145 int brightness;
146 };
147
148 struct acer_debug {
149 struct dentry *root;
150 struct dentry *devices;
151 u32 wmid_devices;
152 };
153
154 static struct rfkill *wireless_rfkill;
155 static struct rfkill *bluetooth_rfkill;
156
157 /* Each low-level interface must define at least some of the following */
158 struct wmi_interface {
159 /* The WMI device type */
160 u32 type;
161
162 /* The capabilities this interface provides */
163 u32 capability;
164
165 /* Private data for the current interface */
166 struct acer_data data;
167
168 /* debugfs entries associated with this interface */
169 struct acer_debug debug;
170 };
171
172 /* The static interface pointer, points to the currently detected interface */
173 static struct wmi_interface *interface;
174
175 /*
176 * Embedded Controller quirks
177 * Some laptops require us to directly access the EC to either enable or query
178 * features that are not available through WMI.
179 */
180
181 struct quirk_entry {
182 u8 wireless;
183 u8 mailled;
184 s8 brightness;
185 u8 bluetooth;
186 };
187
188 static struct quirk_entry *quirks;
189
190 static void set_quirks(void)
191 {
192 if (!interface)
193 return;
194
195 if (quirks->mailled)
196 interface->capability |= ACER_CAP_MAILLED;
197
198 if (quirks->brightness)
199 interface->capability |= ACER_CAP_BRIGHTNESS;
200 }
201
202 static int dmi_matched(const struct dmi_system_id *dmi)
203 {
204 quirks = dmi->driver_data;
205 return 0;
206 }
207
208 static struct quirk_entry quirk_unknown = {
209 };
210
211 static struct quirk_entry quirk_acer_aspire_1520 = {
212 .brightness = -1,
213 };
214
215 static struct quirk_entry quirk_acer_travelmate_2490 = {
216 .mailled = 1,
217 };
218
219 /* This AMW0 laptop has no bluetooth */
220 static struct quirk_entry quirk_medion_md_98300 = {
221 .wireless = 1,
222 };
223
224 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
225 .wireless = 2,
226 };
227
228 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
229 static struct dmi_system_id __devinitdata acer_blacklist[] = {
230 {
231 .ident = "Acer Aspire One (SSD)",
232 .matches = {
233 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
234 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
235 },
236 },
237 {
238 .ident = "Acer Aspire One (HDD)",
239 .matches = {
240 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
241 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
242 },
243 },
244 {}
245 };
246
247 static struct dmi_system_id acer_quirks[] = {
248 {
249 .callback = dmi_matched,
250 .ident = "Acer Aspire 1360",
251 .matches = {
252 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
253 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
254 },
255 .driver_data = &quirk_acer_aspire_1520,
256 },
257 {
258 .callback = dmi_matched,
259 .ident = "Acer Aspire 1520",
260 .matches = {
261 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
262 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
263 },
264 .driver_data = &quirk_acer_aspire_1520,
265 },
266 {
267 .callback = dmi_matched,
268 .ident = "Acer Aspire 3100",
269 .matches = {
270 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
271 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
272 },
273 .driver_data = &quirk_acer_travelmate_2490,
274 },
275 {
276 .callback = dmi_matched,
277 .ident = "Acer Aspire 3610",
278 .matches = {
279 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
280 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
281 },
282 .driver_data = &quirk_acer_travelmate_2490,
283 },
284 {
285 .callback = dmi_matched,
286 .ident = "Acer Aspire 5100",
287 .matches = {
288 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
289 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
290 },
291 .driver_data = &quirk_acer_travelmate_2490,
292 },
293 {
294 .callback = dmi_matched,
295 .ident = "Acer Aspire 5610",
296 .matches = {
297 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
298 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
299 },
300 .driver_data = &quirk_acer_travelmate_2490,
301 },
302 {
303 .callback = dmi_matched,
304 .ident = "Acer Aspire 5630",
305 .matches = {
306 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
307 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
308 },
309 .driver_data = &quirk_acer_travelmate_2490,
310 },
311 {
312 .callback = dmi_matched,
313 .ident = "Acer Aspire 5650",
314 .matches = {
315 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
316 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
317 },
318 .driver_data = &quirk_acer_travelmate_2490,
319 },
320 {
321 .callback = dmi_matched,
322 .ident = "Acer Aspire 5680",
323 .matches = {
324 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
325 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
326 },
327 .driver_data = &quirk_acer_travelmate_2490,
328 },
329 {
330 .callback = dmi_matched,
331 .ident = "Acer Aspire 9110",
332 .matches = {
333 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
334 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
335 },
336 .driver_data = &quirk_acer_travelmate_2490,
337 },
338 {
339 .callback = dmi_matched,
340 .ident = "Acer TravelMate 2490",
341 .matches = {
342 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
343 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
344 },
345 .driver_data = &quirk_acer_travelmate_2490,
346 },
347 {
348 .callback = dmi_matched,
349 .ident = "Acer TravelMate 4200",
350 .matches = {
351 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
352 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
353 },
354 .driver_data = &quirk_acer_travelmate_2490,
355 },
356 {
357 .callback = dmi_matched,
358 .ident = "Fujitsu Siemens Amilo Li 1718",
359 .matches = {
360 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
361 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
362 },
363 .driver_data = &quirk_fujitsu_amilo_li_1718,
364 },
365 {
366 .callback = dmi_matched,
367 .ident = "Medion MD 98300",
368 .matches = {
369 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
370 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
371 },
372 .driver_data = &quirk_medion_md_98300,
373 },
374 {}
375 };
376
377 /* Find which quirks are needed for a particular vendor/ model pair */
378 static void find_quirks(void)
379 {
380 if (!force_series) {
381 dmi_check_system(acer_quirks);
382 } else if (force_series == 2490) {
383 quirks = &quirk_acer_travelmate_2490;
384 }
385
386 if (quirks == NULL)
387 quirks = &quirk_unknown;
388
389 set_quirks();
390 }
391
392 /*
393 * General interface convenience methods
394 */
395
396 static bool has_cap(u32 cap)
397 {
398 if ((interface->capability & cap) != 0)
399 return 1;
400
401 return 0;
402 }
403
404 /*
405 * AMW0 (V1) interface
406 */
407 struct wmab_args {
408 u32 eax;
409 u32 ebx;
410 u32 ecx;
411 u32 edx;
412 };
413
414 struct wmab_ret {
415 u32 eax;
416 u32 ebx;
417 u32 ecx;
418 u32 edx;
419 u32 eex;
420 };
421
422 static acpi_status wmab_execute(struct wmab_args *regbuf,
423 struct acpi_buffer *result)
424 {
425 struct acpi_buffer input;
426 acpi_status status;
427 input.length = sizeof(struct wmab_args);
428 input.pointer = (u8 *)regbuf;
429
430 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
431
432 return status;
433 }
434
435 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
436 struct wmi_interface *iface)
437 {
438 int err;
439 u8 result;
440
441 switch (cap) {
442 case ACER_CAP_MAILLED:
443 switch (quirks->mailled) {
444 default:
445 err = ec_read(0xA, &result);
446 if (err)
447 return AE_ERROR;
448 *value = (result >> 7) & 0x1;
449 return AE_OK;
450 }
451 break;
452 case ACER_CAP_WIRELESS:
453 switch (quirks->wireless) {
454 case 1:
455 err = ec_read(0x7B, &result);
456 if (err)
457 return AE_ERROR;
458 *value = result & 0x1;
459 return AE_OK;
460 case 2:
461 err = ec_read(0x71, &result);
462 if (err)
463 return AE_ERROR;
464 *value = result & 0x1;
465 return AE_OK;
466 default:
467 err = ec_read(0xA, &result);
468 if (err)
469 return AE_ERROR;
470 *value = (result >> 2) & 0x1;
471 return AE_OK;
472 }
473 break;
474 case ACER_CAP_BLUETOOTH:
475 switch (quirks->bluetooth) {
476 default:
477 err = ec_read(0xA, &result);
478 if (err)
479 return AE_ERROR;
480 *value = (result >> 4) & 0x1;
481 return AE_OK;
482 }
483 break;
484 case ACER_CAP_BRIGHTNESS:
485 switch (quirks->brightness) {
486 default:
487 err = ec_read(0x83, &result);
488 if (err)
489 return AE_ERROR;
490 *value = result;
491 return AE_OK;
492 }
493 break;
494 default:
495 return AE_ERROR;
496 }
497 return AE_OK;
498 }
499
500 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
501 {
502 struct wmab_args args;
503
504 args.eax = ACER_AMW0_WRITE;
505 args.ebx = value ? (1<<8) : 0;
506 args.ecx = args.edx = 0;
507
508 switch (cap) {
509 case ACER_CAP_MAILLED:
510 if (value > 1)
511 return AE_BAD_PARAMETER;
512 args.ebx |= ACER_AMW0_MAILLED_MASK;
513 break;
514 case ACER_CAP_WIRELESS:
515 if (value > 1)
516 return AE_BAD_PARAMETER;
517 args.ebx |= ACER_AMW0_WIRELESS_MASK;
518 break;
519 case ACER_CAP_BLUETOOTH:
520 if (value > 1)
521 return AE_BAD_PARAMETER;
522 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
523 break;
524 case ACER_CAP_BRIGHTNESS:
525 if (value > max_brightness)
526 return AE_BAD_PARAMETER;
527 switch (quirks->brightness) {
528 default:
529 return ec_write(0x83, value);
530 break;
531 }
532 default:
533 return AE_ERROR;
534 }
535
536 /* Actually do the set */
537 return wmab_execute(&args, NULL);
538 }
539
540 static acpi_status AMW0_find_mailled(void)
541 {
542 struct wmab_args args;
543 struct wmab_ret ret;
544 acpi_status status = AE_OK;
545 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
546 union acpi_object *obj;
547
548 args.eax = 0x86;
549 args.ebx = args.ecx = args.edx = 0;
550
551 status = wmab_execute(&args, &out);
552 if (ACPI_FAILURE(status))
553 return status;
554
555 obj = (union acpi_object *) out.pointer;
556 if (obj && obj->type == ACPI_TYPE_BUFFER &&
557 obj->buffer.length == sizeof(struct wmab_ret)) {
558 ret = *((struct wmab_ret *) obj->buffer.pointer);
559 } else {
560 return AE_ERROR;
561 }
562
563 if (ret.eex & 0x1)
564 interface->capability |= ACER_CAP_MAILLED;
565
566 kfree(out.pointer);
567
568 return AE_OK;
569 }
570
571 static acpi_status AMW0_set_capabilities(void)
572 {
573 struct wmab_args args;
574 struct wmab_ret ret;
575 acpi_status status = AE_OK;
576 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
577 union acpi_object *obj;
578
579 /*
580 * On laptops with this strange GUID (non Acer), normal probing doesn't
581 * work.
582 */
583 if (wmi_has_guid(AMW0_GUID2)) {
584 interface->capability |= ACER_CAP_WIRELESS;
585 return AE_OK;
586 }
587
588 args.eax = ACER_AMW0_WRITE;
589 args.ecx = args.edx = 0;
590
591 args.ebx = 0xa2 << 8;
592 args.ebx |= ACER_AMW0_WIRELESS_MASK;
593
594 status = wmab_execute(&args, &out);
595 if (ACPI_FAILURE(status))
596 return status;
597
598 obj = (union acpi_object *) out.pointer;
599 if (obj && obj->type == ACPI_TYPE_BUFFER &&
600 obj->buffer.length == sizeof(struct wmab_ret)) {
601 ret = *((struct wmab_ret *) obj->buffer.pointer);
602 } else {
603 return AE_ERROR;
604 }
605
606 if (ret.eax & 0x1)
607 interface->capability |= ACER_CAP_WIRELESS;
608
609 args.ebx = 2 << 8;
610 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
611
612 status = wmab_execute(&args, &out);
613 if (ACPI_FAILURE(status))
614 return status;
615
616 obj = (union acpi_object *) out.pointer;
617 if (obj && obj->type == ACPI_TYPE_BUFFER
618 && obj->buffer.length == sizeof(struct wmab_ret)) {
619 ret = *((struct wmab_ret *) obj->buffer.pointer);
620 } else {
621 return AE_ERROR;
622 }
623
624 if (ret.eax & 0x1)
625 interface->capability |= ACER_CAP_BLUETOOTH;
626
627 kfree(out.pointer);
628
629 /*
630 * This appears to be safe to enable, since all Wistron based laptops
631 * appear to use the same EC register for brightness, even if they
632 * differ for wireless, etc
633 */
634 if (quirks->brightness >= 0)
635 interface->capability |= ACER_CAP_BRIGHTNESS;
636
637 return AE_OK;
638 }
639
640 static struct wmi_interface AMW0_interface = {
641 .type = ACER_AMW0,
642 };
643
644 static struct wmi_interface AMW0_V2_interface = {
645 .type = ACER_AMW0_V2,
646 };
647
648 /*
649 * New interface (The WMID interface)
650 */
651 static acpi_status
652 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
653 {
654 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
655 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
656 union acpi_object *obj;
657 u32 tmp;
658 acpi_status status;
659
660 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
661
662 if (ACPI_FAILURE(status))
663 return status;
664
665 obj = (union acpi_object *) result.pointer;
666 if (obj && obj->type == ACPI_TYPE_BUFFER &&
667 obj->buffer.length == sizeof(u32)) {
668 tmp = *((u32 *) obj->buffer.pointer);
669 } else {
670 tmp = 0;
671 }
672
673 if (out)
674 *out = tmp;
675
676 kfree(result.pointer);
677
678 return status;
679 }
680
681 static acpi_status WMID_get_u32(u32 *value, u32 cap,
682 struct wmi_interface *iface)
683 {
684 acpi_status status;
685 u8 tmp;
686 u32 result, method_id = 0;
687
688 switch (cap) {
689 case ACER_CAP_WIRELESS:
690 method_id = ACER_WMID_GET_WIRELESS_METHODID;
691 break;
692 case ACER_CAP_BLUETOOTH:
693 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
694 break;
695 case ACER_CAP_BRIGHTNESS:
696 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
697 break;
698 case ACER_CAP_THREEG:
699 method_id = ACER_WMID_GET_THREEG_METHODID;
700 break;
701 case ACER_CAP_MAILLED:
702 if (quirks->mailled == 1) {
703 ec_read(0x9f, &tmp);
704 *value = tmp & 0x1;
705 return 0;
706 }
707 default:
708 return AE_ERROR;
709 }
710 status = WMI_execute_u32(method_id, 0, &result);
711
712 if (ACPI_SUCCESS(status))
713 *value = (u8)result;
714
715 return status;
716 }
717
718 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
719 {
720 u32 method_id = 0;
721 char param;
722
723 switch (cap) {
724 case ACER_CAP_BRIGHTNESS:
725 if (value > max_brightness)
726 return AE_BAD_PARAMETER;
727 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
728 break;
729 case ACER_CAP_WIRELESS:
730 if (value > 1)
731 return AE_BAD_PARAMETER;
732 method_id = ACER_WMID_SET_WIRELESS_METHODID;
733 break;
734 case ACER_CAP_BLUETOOTH:
735 if (value > 1)
736 return AE_BAD_PARAMETER;
737 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
738 break;
739 case ACER_CAP_THREEG:
740 if (value > 1)
741 return AE_BAD_PARAMETER;
742 method_id = ACER_WMID_SET_THREEG_METHODID;
743 break;
744 case ACER_CAP_MAILLED:
745 if (value > 1)
746 return AE_BAD_PARAMETER;
747 if (quirks->mailled == 1) {
748 param = value ? 0x92 : 0x93;
749 i8042_command(¶m, 0x1059);
750 return 0;
751 }
752 break;
753 default:
754 return AE_ERROR;
755 }
756 return WMI_execute_u32(method_id, (u32)value, NULL);
757 }
758
759 static acpi_status WMID_set_capabilities(void)
760 {
761 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
762 union acpi_object *obj;
763 acpi_status status;
764 u32 devices;
765
766 status = wmi_query_block(WMID_GUID2, 1, &out);
767 if (ACPI_FAILURE(status))
768 return status;
769
770 obj = (union acpi_object *) out.pointer;
771 if (obj && obj->type == ACPI_TYPE_BUFFER &&
772 obj->buffer.length == sizeof(u32)) {
773 devices = *((u32 *) obj->buffer.pointer);
774 } else {
775 return AE_ERROR;
776 }
777
778 /* Not sure on the meaning of the relevant bits yet to detect these */
779 interface->capability |= ACER_CAP_WIRELESS;
780 interface->capability |= ACER_CAP_THREEG;
781
782 /* WMID always provides brightness methods */
783 interface->capability |= ACER_CAP_BRIGHTNESS;
784
785 if (devices & 0x10)
786 interface->capability |= ACER_CAP_BLUETOOTH;
787
788 if (!(devices & 0x20))
789 max_brightness = 0x9;
790
791 return status;
792 }
793
794 static struct wmi_interface wmid_interface = {
795 .type = ACER_WMID,
796 };
797
798 /*
799 * Generic Device (interface-independent)
800 */
801
802 static acpi_status get_u32(u32 *value, u32 cap)
803 {
804 acpi_status status = AE_ERROR;
805
806 switch (interface->type) {
807 case ACER_AMW0:
808 status = AMW0_get_u32(value, cap, interface);
809 break;
810 case ACER_AMW0_V2:
811 if (cap == ACER_CAP_MAILLED) {
812 status = AMW0_get_u32(value, cap, interface);
813 break;
814 }
815 case ACER_WMID:
816 status = WMID_get_u32(value, cap, interface);
817 break;
818 }
819
820 return status;
821 }
822
823 static acpi_status set_u32(u32 value, u32 cap)
824 {
825 acpi_status status;
826
827 if (interface->capability & cap) {
828 switch (interface->type) {
829 case ACER_AMW0:
830 return AMW0_set_u32(value, cap, interface);
831 case ACER_AMW0_V2:
832 if (cap == ACER_CAP_MAILLED)
833 return AMW0_set_u32(value, cap, interface);
834
835 /*
836 * On some models, some WMID methods don't toggle
837 * properly. For those cases, we want to run the AMW0
838 * method afterwards to be certain we've really toggled
839 * the device state.
840 */
841 if (cap == ACER_CAP_WIRELESS ||
842 cap == ACER_CAP_BLUETOOTH) {
843 status = WMID_set_u32(value, cap, interface);
844 if (ACPI_FAILURE(status))
845 return status;
846
847 return AMW0_set_u32(value, cap, interface);
848 }
849 case ACER_WMID:
850 return WMID_set_u32(value, cap, interface);
851 default:
852 return AE_BAD_PARAMETER;
853 }
854 }
855 return AE_BAD_PARAMETER;
856 }
857
858 static void __init acer_commandline_init(void)
859 {
860 /*
861 * These will all fail silently if the value given is invalid, or the
862 * capability isn't available on the given interface
863 */
864 set_u32(mailled, ACER_CAP_MAILLED);
865 set_u32(threeg, ACER_CAP_THREEG);
866 set_u32(brightness, ACER_CAP_BRIGHTNESS);
867 }
868
869 /*
870 * LED device (Mail LED only, no other LEDs known yet)
871 */
872 static void mail_led_set(struct led_classdev *led_cdev,
873 enum led_brightness value)
874 {
875 set_u32(value, ACER_CAP_MAILLED);
876 }
877
878 static struct led_classdev mail_led = {
879 .name = "acer-wmi::mail",
880 .brightness_set = mail_led_set,
881 };
882
883 static int __devinit acer_led_init(struct device *dev)
884 {
885 return led_classdev_register(dev, &mail_led);
886 }
887
888 static void acer_led_exit(void)
889 {
890 led_classdev_unregister(&mail_led);
891 }
892
893 /*
894 * Backlight device
895 */
896 static struct backlight_device *acer_backlight_device;
897
898 static int read_brightness(struct backlight_device *bd)
899 {
900 u32 value;
901 get_u32(&value, ACER_CAP_BRIGHTNESS);
902 return value;
903 }
904
905 static int update_bl_status(struct backlight_device *bd)
906 {
907 int intensity = bd->props.brightness;
908
909 if (bd->props.power != FB_BLANK_UNBLANK)
910 intensity = 0;
911 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
912 intensity = 0;
913
914 set_u32(intensity, ACER_CAP_BRIGHTNESS);
915
916 return 0;
917 }
918
919 static struct backlight_ops acer_bl_ops = {
920 .get_brightness = read_brightness,
921 .update_status = update_bl_status,
922 };
923
924 static int __devinit acer_backlight_init(struct device *dev)
925 {
926 struct backlight_device *bd;
927
928 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops);
929 if (IS_ERR(bd)) {
930 printk(ACER_ERR "Could not register Acer backlight device\n");
931 acer_backlight_device = NULL;
932 return PTR_ERR(bd);
933 }
934
935 acer_backlight_device = bd;
936
937 bd->props.power = FB_BLANK_UNBLANK;
938 bd->props.brightness = max_brightness;
939 bd->props.max_brightness = max_brightness;
940 backlight_update_status(bd);
941 return 0;
942 }
943
944 static void acer_backlight_exit(void)
945 {
946 backlight_device_unregister(acer_backlight_device);
947 }
948
949 /*
950 * Rfkill devices
951 */
952 static void acer_rfkill_update(struct work_struct *ignored);
953 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
954 static void acer_rfkill_update(struct work_struct *ignored)
955 {
956 u32 state;
957 acpi_status status;
958
959 status = get_u32(&state, ACER_CAP_WIRELESS);
960 if (ACPI_SUCCESS(status))
961 rfkill_set_sw_state(wireless_rfkill, !state);
962
963 if (has_cap(ACER_CAP_BLUETOOTH)) {
964 status = get_u32(&state, ACER_CAP_BLUETOOTH);
965 if (ACPI_SUCCESS(status))
966 rfkill_set_sw_state(bluetooth_rfkill, !state);
967 }
968
969 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
970 }
971
972 static int acer_rfkill_set(void *data, bool blocked)
973 {
974 acpi_status status;
975 u32 cap = (unsigned long)data;
976 status = set_u32(!blocked, cap);
977 if (ACPI_FAILURE(status))
978 return -ENODEV;
979 return 0;
980 }
981
982 static const struct rfkill_ops acer_rfkill_ops = {
983 .set_block = acer_rfkill_set,
984 };
985
986 static struct rfkill *acer_rfkill_register(struct device *dev,
987 enum rfkill_type type,
988 char *name, u32 cap)
989 {
990 int err;
991 struct rfkill *rfkill_dev;
992
993 rfkill_dev = rfkill_alloc(name, dev, type,
994 &acer_rfkill_ops,
995 (void *)(unsigned long)cap);
996 if (!rfkill_dev)
997 return ERR_PTR(-ENOMEM);
998
999 err = rfkill_register(rfkill_dev);
1000 if (err) {
1001 rfkill_destroy(rfkill_dev);
1002 return ERR_PTR(err);
1003 }
1004 return rfkill_dev;
1005 }
1006
1007 static int acer_rfkill_init(struct device *dev)
1008 {
1009 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1010 "acer-wireless", ACER_CAP_WIRELESS);
1011 if (IS_ERR(wireless_rfkill))
1012 return PTR_ERR(wireless_rfkill);
1013
1014 if (has_cap(ACER_CAP_BLUETOOTH)) {
1015 bluetooth_rfkill = acer_rfkill_register(dev,
1016 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1017 ACER_CAP_BLUETOOTH);
1018 if (IS_ERR(bluetooth_rfkill)) {
1019 rfkill_unregister(wireless_rfkill);
1020 rfkill_destroy(wireless_rfkill);
1021 return PTR_ERR(bluetooth_rfkill);
1022 }
1023 }
1024
1025 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1026
1027 return 0;
1028 }
1029
1030 static void acer_rfkill_exit(void)
1031 {
1032 cancel_delayed_work_sync(&acer_rfkill_work);
1033
1034 rfkill_unregister(wireless_rfkill);
1035 rfkill_destroy(wireless_rfkill);
1036
1037 if (has_cap(ACER_CAP_BLUETOOTH)) {
1038 rfkill_unregister(bluetooth_rfkill);
1039 rfkill_destroy(bluetooth_rfkill);
1040 }
1041 return;
1042 }
1043
1044 /*
1045 * sysfs interface
1046 */
1047 static ssize_t show_bool_threeg(struct device *dev,
1048 struct device_attribute *attr, char *buf)
1049 {
1050 u32 result; \
1051 acpi_status status = get_u32(&result, ACER_CAP_THREEG);
1052 if (ACPI_SUCCESS(status))
1053 return sprintf(buf, "%u\n", result);
1054 return sprintf(buf, "Read error\n");
1055 }
1056
1057 static ssize_t set_bool_threeg(struct device *dev,
1058 struct device_attribute *attr, const char *buf, size_t count)
1059 {
1060 u32 tmp = simple_strtoul(buf, NULL, 10);
1061 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1062 if (ACPI_FAILURE(status))
1063 return -EINVAL;
1064 return count;
1065 }
1066 static DEVICE_ATTR(threeg, S_IWUGO | S_IRUGO | S_IWUSR, show_bool_threeg,
1067 set_bool_threeg);
1068
1069 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1070 char *buf)
1071 {
1072 switch (interface->type) {
1073 case ACER_AMW0:
1074 return sprintf(buf, "AMW0\n");
1075 case ACER_AMW0_V2:
1076 return sprintf(buf, "AMW0 v2\n");
1077 case ACER_WMID:
1078 return sprintf(buf, "WMID\n");
1079 default:
1080 return sprintf(buf, "Error!\n");
1081 }
1082 }
1083
1084 static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
1085 show_interface, NULL);
1086
1087 /*
1088 * debugfs functions
1089 */
1090 static u32 get_wmid_devices(void)
1091 {
1092 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1093 union acpi_object *obj;
1094 acpi_status status;
1095
1096 status = wmi_query_block(WMID_GUID2, 1, &out);
1097 if (ACPI_FAILURE(status))
1098 return 0;
1099
1100 obj = (union acpi_object *) out.pointer;
1101 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1102 obj->buffer.length == sizeof(u32)) {
1103 return *((u32 *) obj->buffer.pointer);
1104 } else {
1105 return 0;
1106 }
1107 }
1108
1109 /*
1110 * Platform device
1111 */
1112 static int __devinit acer_platform_probe(struct platform_device *device)
1113 {
1114 int err;
1115
1116 if (has_cap(ACER_CAP_MAILLED)) {
1117 err = acer_led_init(&device->dev);
1118 if (err)
1119 goto error_mailled;
1120 }
1121
1122 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1123 err = acer_backlight_init(&device->dev);
1124 if (err)
1125 goto error_brightness;
1126 }
1127
1128 err = acer_rfkill_init(&device->dev);
1129 if (err)
1130 goto error_rfkill;
1131
1132 return err;
1133
1134 error_rfkill:
1135 if (has_cap(ACER_CAP_BRIGHTNESS))
1136 acer_backlight_exit();
1137 error_brightness:
1138 if (has_cap(ACER_CAP_MAILLED))
1139 acer_led_exit();
1140 error_mailled:
1141 return err;
1142 }
1143
1144 static int acer_platform_remove(struct platform_device *device)
1145 {
1146 if (has_cap(ACER_CAP_MAILLED))
1147 acer_led_exit();
1148 if (has_cap(ACER_CAP_BRIGHTNESS))
1149 acer_backlight_exit();
1150
1151 acer_rfkill_exit();
1152 return 0;
1153 }
1154
1155 static int acer_platform_suspend(struct platform_device *dev,
1156 pm_message_t state)
1157 {
1158 u32 value;
1159 struct acer_data *data = &interface->data;
1160
1161 if (!data)
1162 return -ENOMEM;
1163
1164 if (has_cap(ACER_CAP_MAILLED)) {
1165 get_u32(&value, ACER_CAP_MAILLED);
1166 data->mailled = value;
1167 }
1168
1169 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1170 get_u32(&value, ACER_CAP_BRIGHTNESS);
1171 data->brightness = value;
1172 }
1173
1174 return 0;
1175 }
1176
1177 static int acer_platform_resume(struct platform_device *device)
1178 {
1179 struct acer_data *data = &interface->data;
1180
1181 if (!data)
1182 return -ENOMEM;
1183
1184 if (has_cap(ACER_CAP_MAILLED))
1185 set_u32(data->mailled, ACER_CAP_MAILLED);
1186
1187 if (has_cap(ACER_CAP_BRIGHTNESS))
1188 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1189
1190 return 0;
1191 }
1192
1193 static struct platform_driver acer_platform_driver = {
1194 .driver = {
1195 .name = "acer-wmi",
1196 .owner = THIS_MODULE,
1197 },
1198 .probe = acer_platform_probe,
1199 .remove = acer_platform_remove,
1200 .suspend = acer_platform_suspend,
1201 .resume = acer_platform_resume,
1202 };
1203
1204 static struct platform_device *acer_platform_device;
1205
1206 static int remove_sysfs(struct platform_device *device)
1207 {
1208 if (has_cap(ACER_CAP_THREEG))
1209 device_remove_file(&device->dev, &dev_attr_threeg);
1210
1211 device_remove_file(&device->dev, &dev_attr_interface);
1212
1213 return 0;
1214 }
1215
1216 static int create_sysfs(void)
1217 {
1218 int retval = -ENOMEM;
1219
1220 if (has_cap(ACER_CAP_THREEG)) {
1221 retval = device_create_file(&acer_platform_device->dev,
1222 &dev_attr_threeg);
1223 if (retval)
1224 goto error_sysfs;
1225 }
1226
1227 retval = device_create_file(&acer_platform_device->dev,
1228 &dev_attr_interface);
1229 if (retval)
1230 goto error_sysfs;
1231
1232 return 0;
1233
1234 error_sysfs:
1235 remove_sysfs(acer_platform_device);
1236 return retval;
1237 }
1238
1239 static void remove_debugfs(void)
1240 {
1241 debugfs_remove(interface->debug.devices);
1242 debugfs_remove(interface->debug.root);
1243 }
1244
1245 static int create_debugfs(void)
1246 {
1247 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1248 if (!interface->debug.root) {
1249 printk(ACER_ERR "Failed to create debugfs directory");
1250 return -ENOMEM;
1251 }
1252
1253 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1254 interface->debug.root,
1255 &interface->debug.wmid_devices);
1256 if (!interface->debug.devices)
1257 goto error_debugfs;
1258
1259 return 0;
1260
1261 error_debugfs:
1262 remove_debugfs();
1263 return -ENOMEM;
1264 }
1265
1266 static int __init acer_wmi_init(void)
1267 {
1268 int err;
1269
1270 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
1271
1272 if (dmi_check_system(acer_blacklist)) {
1273 printk(ACER_INFO "Blacklisted hardware detected - "
1274 "not loading\n");
1275 return -ENODEV;
1276 }
1277
1278 find_quirks();
1279
1280 /*
1281 * Detect which ACPI-WMI interface we're using.
1282 */
1283 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1284 interface = &AMW0_V2_interface;
1285
1286 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1287 interface = &wmid_interface;
1288
1289 if (wmi_has_guid(WMID_GUID2) && interface) {
1290 if (ACPI_FAILURE(WMID_set_capabilities())) {
1291 printk(ACER_ERR "Unable to detect available WMID "
1292 "devices\n");
1293 return -ENODEV;
1294 }
1295 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1296 printk(ACER_ERR "No WMID device detection method found\n");
1297 return -ENODEV;
1298 }
1299
1300 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1301 interface = &AMW0_interface;
1302
1303 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1304 printk(ACER_ERR "Unable to detect available AMW0 "
1305 "devices\n");
1306 return -ENODEV;
1307 }
1308 }
1309
1310 if (wmi_has_guid(AMW0_GUID1))
1311 AMW0_find_mailled();
1312
1313 if (!interface) {
1314 printk(ACER_ERR "No or unsupported WMI interface, unable to "
1315 "load\n");
1316 return -ENODEV;
1317 }
1318
1319 set_quirks();
1320
1321 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1322 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1323 printk(ACER_INFO "Brightness must be controlled by "
1324 "generic video driver\n");
1325 }
1326
1327 if (platform_driver_register(&acer_platform_driver)) {
1328 printk(ACER_ERR "Unable to register platform driver.\n");
1329 goto error_platform_register;
1330 }
1331 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1332 platform_device_add(acer_platform_device);
1333
1334 err = create_sysfs();
1335 if (err)
1336 return err;
1337
1338 if (wmi_has_guid(WMID_GUID2)) {
1339 interface->debug.wmid_devices = get_wmid_devices();
1340 err = create_debugfs();
1341 if (err)
1342 return err;
1343 }
1344
1345 /* Override any initial settings with values from the commandline */
1346 acer_commandline_init();
1347
1348 return 0;
1349
1350 error_platform_register:
1351 return -ENODEV;
1352 }
1353
1354 static void __exit acer_wmi_exit(void)
1355 {
1356 remove_sysfs(acer_platform_device);
1357 remove_debugfs();
1358 platform_device_del(acer_platform_device);
1359 platform_driver_unregister(&acer_platform_driver);
1360
1361 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1362 return;
1363 }
1364
1365 module_init(acer_wmi_init);
1366 module_exit(acer_wmi_exit);
1367
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