acer-wmi: remove non-used acer_quirks struct definition
[linux-2.6.git] / drivers / platform / x86 / acer-wmi.c
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 #include <linux/slab.h>
40
41 #include <acpi/acpi_drivers.h>
42
43 MODULE_AUTHOR("Carlos Corbacho");
44 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
45 MODULE_LICENSE("GPL");
46
47 #define ACER_LOGPREFIX "acer-wmi: "
48 #define ACER_ERR KERN_ERR ACER_LOGPREFIX
49 #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
50 #define ACER_INFO KERN_INFO ACER_LOGPREFIX
51
52 /*
53  * Magic Number
54  * Meaning is unknown - this number is required for writing to ACPI for AMW0
55  * (it's also used in acerhk when directly accessing the BIOS)
56  */
57 #define ACER_AMW0_WRITE 0x9610
58
59 /*
60  * Bit masks for the AMW0 interface
61  */
62 #define ACER_AMW0_WIRELESS_MASK  0x35
63 #define ACER_AMW0_BLUETOOTH_MASK 0x34
64 #define ACER_AMW0_MAILLED_MASK   0x31
65
66 /*
67  * Method IDs for WMID interface
68  */
69 #define ACER_WMID_GET_WIRELESS_METHODID         1
70 #define ACER_WMID_GET_BLUETOOTH_METHODID        2
71 #define ACER_WMID_GET_BRIGHTNESS_METHODID       3
72 #define ACER_WMID_SET_WIRELESS_METHODID         4
73 #define ACER_WMID_SET_BLUETOOTH_METHODID        5
74 #define ACER_WMID_SET_BRIGHTNESS_METHODID       6
75 #define ACER_WMID_GET_THREEG_METHODID           10
76 #define ACER_WMID_SET_THREEG_METHODID           11
77
78 /*
79  * Acer ACPI method GUIDs
80  */
81 #define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
82 #define AMW0_GUID2              "431F16ED-0C2B-444C-B267-27DEB140CF9C"
83 #define WMID_GUID1              "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
84 #define WMID_GUID2              "95764E09-FB56-4e83-B31A-37761F60994A"
85
86 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
87 MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
88
89 /*
90  * Interface capability flags
91  */
92 #define ACER_CAP_MAILLED                (1<<0)
93 #define ACER_CAP_WIRELESS               (1<<1)
94 #define ACER_CAP_BLUETOOTH              (1<<2)
95 #define ACER_CAP_BRIGHTNESS             (1<<3)
96 #define ACER_CAP_THREEG                 (1<<4)
97 #define ACER_CAP_ANY                    (0xFFFFFFFF)
98
99 /*
100  * Interface type flags
101  */
102 enum interface_flags {
103         ACER_AMW0,
104         ACER_AMW0_V2,
105         ACER_WMID,
106 };
107
108 #define ACER_DEFAULT_WIRELESS  0
109 #define ACER_DEFAULT_BLUETOOTH 0
110 #define ACER_DEFAULT_MAILLED   0
111 #define ACER_DEFAULT_THREEG    0
112
113 static int max_brightness = 0xF;
114
115 static int mailled = -1;
116 static int brightness = -1;
117 static int threeg = -1;
118 static int force_series;
119
120 module_param(mailled, int, 0444);
121 module_param(brightness, int, 0444);
122 module_param(threeg, int, 0444);
123 module_param(force_series, int, 0444);
124 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
125 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
126 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
127 MODULE_PARM_DESC(force_series, "Force a different laptop series");
128
129 struct acer_data {
130         int mailled;
131         int threeg;
132         int brightness;
133 };
134
135 struct acer_debug {
136         struct dentry *root;
137         struct dentry *devices;
138         u32 wmid_devices;
139 };
140
141 static struct rfkill *wireless_rfkill;
142 static struct rfkill *bluetooth_rfkill;
143
144 /* Each low-level interface must define at least some of the following */
145 struct wmi_interface {
146         /* The WMI device type */
147         u32 type;
148
149         /* The capabilities this interface provides */
150         u32 capability;
151
152         /* Private data for the current interface */
153         struct acer_data data;
154
155         /* debugfs entries associated with this interface */
156         struct acer_debug debug;
157 };
158
159 /* The static interface pointer, points to the currently detected interface */
160 static struct wmi_interface *interface;
161
162 /*
163  * Embedded Controller quirks
164  * Some laptops require us to directly access the EC to either enable or query
165  * features that are not available through WMI.
166  */
167
168 struct quirk_entry {
169         u8 wireless;
170         u8 mailled;
171         s8 brightness;
172         u8 bluetooth;
173 };
174
175 static struct quirk_entry *quirks;
176
177 static void set_quirks(void)
178 {
179         if (!interface)
180                 return;
181
182         if (quirks->mailled)
183                 interface->capability |= ACER_CAP_MAILLED;
184
185         if (quirks->brightness)
186                 interface->capability |= ACER_CAP_BRIGHTNESS;
187 }
188
189 static int dmi_matched(const struct dmi_system_id *dmi)
190 {
191         quirks = dmi->driver_data;
192         return 1;
193 }
194
195 static struct quirk_entry quirk_unknown = {
196 };
197
198 static struct quirk_entry quirk_acer_aspire_1520 = {
199         .brightness = -1,
200 };
201
202 static struct quirk_entry quirk_acer_travelmate_2490 = {
203         .mailled = 1,
204 };
205
206 /* This AMW0 laptop has no bluetooth */
207 static struct quirk_entry quirk_medion_md_98300 = {
208         .wireless = 1,
209 };
210
211 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
212         .wireless = 2,
213 };
214
215 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
216 static struct dmi_system_id __devinitdata acer_blacklist[] = {
217         {
218                 .ident = "Acer Aspire One (SSD)",
219                 .matches = {
220                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
221                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
222                 },
223         },
224         {
225                 .ident = "Acer Aspire One (HDD)",
226                 .matches = {
227                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
228                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
229                 },
230         },
231         {}
232 };
233
234 static struct dmi_system_id acer_quirks[] = {
235         {
236                 .callback = dmi_matched,
237                 .ident = "Acer Aspire 1360",
238                 .matches = {
239                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
240                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
241                 },
242                 .driver_data = &quirk_acer_aspire_1520,
243         },
244         {
245                 .callback = dmi_matched,
246                 .ident = "Acer Aspire 1520",
247                 .matches = {
248                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
249                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
250                 },
251                 .driver_data = &quirk_acer_aspire_1520,
252         },
253         {
254                 .callback = dmi_matched,
255                 .ident = "Acer Aspire 3100",
256                 .matches = {
257                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
258                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
259                 },
260                 .driver_data = &quirk_acer_travelmate_2490,
261         },
262         {
263                 .callback = dmi_matched,
264                 .ident = "Acer Aspire 3610",
265                 .matches = {
266                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
267                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
268                 },
269                 .driver_data = &quirk_acer_travelmate_2490,
270         },
271         {
272                 .callback = dmi_matched,
273                 .ident = "Acer Aspire 5100",
274                 .matches = {
275                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
276                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
277                 },
278                 .driver_data = &quirk_acer_travelmate_2490,
279         },
280         {
281                 .callback = dmi_matched,
282                 .ident = "Acer Aspire 5610",
283                 .matches = {
284                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
285                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
286                 },
287                 .driver_data = &quirk_acer_travelmate_2490,
288         },
289         {
290                 .callback = dmi_matched,
291                 .ident = "Acer Aspire 5630",
292                 .matches = {
293                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
294                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
295                 },
296                 .driver_data = &quirk_acer_travelmate_2490,
297         },
298         {
299                 .callback = dmi_matched,
300                 .ident = "Acer Aspire 5650",
301                 .matches = {
302                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
303                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
304                 },
305                 .driver_data = &quirk_acer_travelmate_2490,
306         },
307         {
308                 .callback = dmi_matched,
309                 .ident = "Acer Aspire 5680",
310                 .matches = {
311                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
312                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
313                 },
314                 .driver_data = &quirk_acer_travelmate_2490,
315         },
316         {
317                 .callback = dmi_matched,
318                 .ident = "Acer Aspire 9110",
319                 .matches = {
320                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
321                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
322                 },
323                 .driver_data = &quirk_acer_travelmate_2490,
324         },
325         {
326                 .callback = dmi_matched,
327                 .ident = "Acer TravelMate 2490",
328                 .matches = {
329                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
330                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
331                 },
332                 .driver_data = &quirk_acer_travelmate_2490,
333         },
334         {
335                 .callback = dmi_matched,
336                 .ident = "Acer TravelMate 4200",
337                 .matches = {
338                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
339                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
340                 },
341                 .driver_data = &quirk_acer_travelmate_2490,
342         },
343         {
344                 .callback = dmi_matched,
345                 .ident = "Fujitsu Siemens Amilo Li 1718",
346                 .matches = {
347                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
348                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
349                 },
350                 .driver_data = &quirk_fujitsu_amilo_li_1718,
351         },
352         {
353                 .callback = dmi_matched,
354                 .ident = "Medion MD 98300",
355                 .matches = {
356                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
357                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
358                 },
359                 .driver_data = &quirk_medion_md_98300,
360         },
361         {}
362 };
363
364 /* Find which quirks are needed for a particular vendor/ model pair */
365 static void find_quirks(void)
366 {
367         if (!force_series) {
368                 dmi_check_system(acer_quirks);
369         } else if (force_series == 2490) {
370                 quirks = &quirk_acer_travelmate_2490;
371         }
372
373         if (quirks == NULL)
374                 quirks = &quirk_unknown;
375
376         set_quirks();
377 }
378
379 /*
380  * General interface convenience methods
381  */
382
383 static bool has_cap(u32 cap)
384 {
385         if ((interface->capability & cap) != 0)
386                 return 1;
387
388         return 0;
389 }
390
391 /*
392  * AMW0 (V1) interface
393  */
394 struct wmab_args {
395         u32 eax;
396         u32 ebx;
397         u32 ecx;
398         u32 edx;
399 };
400
401 struct wmab_ret {
402         u32 eax;
403         u32 ebx;
404         u32 ecx;
405         u32 edx;
406         u32 eex;
407 };
408
409 static acpi_status wmab_execute(struct wmab_args *regbuf,
410 struct acpi_buffer *result)
411 {
412         struct acpi_buffer input;
413         acpi_status status;
414         input.length = sizeof(struct wmab_args);
415         input.pointer = (u8 *)regbuf;
416
417         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
418
419         return status;
420 }
421
422 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
423 struct wmi_interface *iface)
424 {
425         int err;
426         u8 result;
427
428         switch (cap) {
429         case ACER_CAP_MAILLED:
430                 switch (quirks->mailled) {
431                 default:
432                         err = ec_read(0xA, &result);
433                         if (err)
434                                 return AE_ERROR;
435                         *value = (result >> 7) & 0x1;
436                         return AE_OK;
437                 }
438                 break;
439         case ACER_CAP_WIRELESS:
440                 switch (quirks->wireless) {
441                 case 1:
442                         err = ec_read(0x7B, &result);
443                         if (err)
444                                 return AE_ERROR;
445                         *value = result & 0x1;
446                         return AE_OK;
447                 case 2:
448                         err = ec_read(0x71, &result);
449                         if (err)
450                                 return AE_ERROR;
451                         *value = result & 0x1;
452                         return AE_OK;
453                 default:
454                         err = ec_read(0xA, &result);
455                         if (err)
456                                 return AE_ERROR;
457                         *value = (result >> 2) & 0x1;
458                         return AE_OK;
459                 }
460                 break;
461         case ACER_CAP_BLUETOOTH:
462                 switch (quirks->bluetooth) {
463                 default:
464                         err = ec_read(0xA, &result);
465                         if (err)
466                                 return AE_ERROR;
467                         *value = (result >> 4) & 0x1;
468                         return AE_OK;
469                 }
470                 break;
471         case ACER_CAP_BRIGHTNESS:
472                 switch (quirks->brightness) {
473                 default:
474                         err = ec_read(0x83, &result);
475                         if (err)
476                                 return AE_ERROR;
477                         *value = result;
478                         return AE_OK;
479                 }
480                 break;
481         default:
482                 return AE_ERROR;
483         }
484         return AE_OK;
485 }
486
487 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
488 {
489         struct wmab_args args;
490
491         args.eax = ACER_AMW0_WRITE;
492         args.ebx = value ? (1<<8) : 0;
493         args.ecx = args.edx = 0;
494
495         switch (cap) {
496         case ACER_CAP_MAILLED:
497                 if (value > 1)
498                         return AE_BAD_PARAMETER;
499                 args.ebx |= ACER_AMW0_MAILLED_MASK;
500                 break;
501         case ACER_CAP_WIRELESS:
502                 if (value > 1)
503                         return AE_BAD_PARAMETER;
504                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
505                 break;
506         case ACER_CAP_BLUETOOTH:
507                 if (value > 1)
508                         return AE_BAD_PARAMETER;
509                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
510                 break;
511         case ACER_CAP_BRIGHTNESS:
512                 if (value > max_brightness)
513                         return AE_BAD_PARAMETER;
514                 switch (quirks->brightness) {
515                 default:
516                         return ec_write(0x83, value);
517                         break;
518                 }
519         default:
520                 return AE_ERROR;
521         }
522
523         /* Actually do the set */
524         return wmab_execute(&args, NULL);
525 }
526
527 static acpi_status AMW0_find_mailled(void)
528 {
529         struct wmab_args args;
530         struct wmab_ret ret;
531         acpi_status status = AE_OK;
532         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
533         union acpi_object *obj;
534
535         args.eax = 0x86;
536         args.ebx = args.ecx = args.edx = 0;
537
538         status = wmab_execute(&args, &out);
539         if (ACPI_FAILURE(status))
540                 return status;
541
542         obj = (union acpi_object *) out.pointer;
543         if (obj && obj->type == ACPI_TYPE_BUFFER &&
544         obj->buffer.length == sizeof(struct wmab_ret)) {
545                 ret = *((struct wmab_ret *) obj->buffer.pointer);
546         } else {
547                 kfree(out.pointer);
548                 return AE_ERROR;
549         }
550
551         if (ret.eex & 0x1)
552                 interface->capability |= ACER_CAP_MAILLED;
553
554         kfree(out.pointer);
555
556         return AE_OK;
557 }
558
559 static acpi_status AMW0_set_capabilities(void)
560 {
561         struct wmab_args args;
562         struct wmab_ret ret;
563         acpi_status status;
564         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
565         union acpi_object *obj;
566
567         /*
568          * On laptops with this strange GUID (non Acer), normal probing doesn't
569          * work.
570          */
571         if (wmi_has_guid(AMW0_GUID2)) {
572                 interface->capability |= ACER_CAP_WIRELESS;
573                 return AE_OK;
574         }
575
576         args.eax = ACER_AMW0_WRITE;
577         args.ecx = args.edx = 0;
578
579         args.ebx = 0xa2 << 8;
580         args.ebx |= ACER_AMW0_WIRELESS_MASK;
581
582         status = wmab_execute(&args, &out);
583         if (ACPI_FAILURE(status))
584                 return status;
585
586         obj = out.pointer;
587         if (obj && obj->type == ACPI_TYPE_BUFFER &&
588         obj->buffer.length == sizeof(struct wmab_ret)) {
589                 ret = *((struct wmab_ret *) obj->buffer.pointer);
590         } else {
591                 status = AE_ERROR;
592                 goto out;
593         }
594
595         if (ret.eax & 0x1)
596                 interface->capability |= ACER_CAP_WIRELESS;
597
598         args.ebx = 2 << 8;
599         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
600
601         /*
602          * It's ok to use existing buffer for next wmab_execute call.
603          * But we need to kfree(out.pointer) if next wmab_execute fail.
604          */
605         status = wmab_execute(&args, &out);
606         if (ACPI_FAILURE(status))
607                 goto out;
608
609         obj = (union acpi_object *) out.pointer;
610         if (obj && obj->type == ACPI_TYPE_BUFFER
611         && obj->buffer.length == sizeof(struct wmab_ret)) {
612                 ret = *((struct wmab_ret *) obj->buffer.pointer);
613         } else {
614                 status = AE_ERROR;
615                 goto out;
616         }
617
618         if (ret.eax & 0x1)
619                 interface->capability |= ACER_CAP_BLUETOOTH;
620
621         /*
622          * This appears to be safe to enable, since all Wistron based laptops
623          * appear to use the same EC register for brightness, even if they
624          * differ for wireless, etc
625          */
626         if (quirks->brightness >= 0)
627                 interface->capability |= ACER_CAP_BRIGHTNESS;
628
629         status = AE_OK;
630 out:
631         kfree(out.pointer);
632         return status;
633 }
634
635 static struct wmi_interface AMW0_interface = {
636         .type = ACER_AMW0,
637 };
638
639 static struct wmi_interface AMW0_V2_interface = {
640         .type = ACER_AMW0_V2,
641 };
642
643 /*
644  * New interface (The WMID interface)
645  */
646 static acpi_status
647 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
648 {
649         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
650         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
651         union acpi_object *obj;
652         u32 tmp;
653         acpi_status status;
654
655         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
656
657         if (ACPI_FAILURE(status))
658                 return status;
659
660         obj = (union acpi_object *) result.pointer;
661         if (obj && obj->type == ACPI_TYPE_BUFFER &&
662                 obj->buffer.length == sizeof(u32)) {
663                 tmp = *((u32 *) obj->buffer.pointer);
664         } else {
665                 tmp = 0;
666         }
667
668         if (out)
669                 *out = tmp;
670
671         kfree(result.pointer);
672
673         return status;
674 }
675
676 static acpi_status WMID_get_u32(u32 *value, u32 cap,
677 struct wmi_interface *iface)
678 {
679         acpi_status status;
680         u8 tmp;
681         u32 result, method_id = 0;
682
683         switch (cap) {
684         case ACER_CAP_WIRELESS:
685                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
686                 break;
687         case ACER_CAP_BLUETOOTH:
688                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
689                 break;
690         case ACER_CAP_BRIGHTNESS:
691                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
692                 break;
693         case ACER_CAP_THREEG:
694                 method_id = ACER_WMID_GET_THREEG_METHODID;
695                 break;
696         case ACER_CAP_MAILLED:
697                 if (quirks->mailled == 1) {
698                         ec_read(0x9f, &tmp);
699                         *value = tmp & 0x1;
700                         return 0;
701                 }
702         default:
703                 return AE_ERROR;
704         }
705         status = WMI_execute_u32(method_id, 0, &result);
706
707         if (ACPI_SUCCESS(status))
708                 *value = (u8)result;
709
710         return status;
711 }
712
713 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
714 {
715         u32 method_id = 0;
716         char param;
717
718         switch (cap) {
719         case ACER_CAP_BRIGHTNESS:
720                 if (value > max_brightness)
721                         return AE_BAD_PARAMETER;
722                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
723                 break;
724         case ACER_CAP_WIRELESS:
725                 if (value > 1)
726                         return AE_BAD_PARAMETER;
727                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
728                 break;
729         case ACER_CAP_BLUETOOTH:
730                 if (value > 1)
731                         return AE_BAD_PARAMETER;
732                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
733                 break;
734         case ACER_CAP_THREEG:
735                 if (value > 1)
736                         return AE_BAD_PARAMETER;
737                 method_id = ACER_WMID_SET_THREEG_METHODID;
738                 break;
739         case ACER_CAP_MAILLED:
740                 if (value > 1)
741                         return AE_BAD_PARAMETER;
742                 if (quirks->mailled == 1) {
743                         param = value ? 0x92 : 0x93;
744                         i8042_lock_chip();
745                         i8042_command(&param, 0x1059);
746                         i8042_unlock_chip();
747                         return 0;
748                 }
749                 break;
750         default:
751                 return AE_ERROR;
752         }
753         return WMI_execute_u32(method_id, (u32)value, NULL);
754 }
755
756 static acpi_status WMID_set_capabilities(void)
757 {
758         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
759         union acpi_object *obj;
760         acpi_status status;
761         u32 devices;
762
763         status = wmi_query_block(WMID_GUID2, 1, &out);
764         if (ACPI_FAILURE(status))
765                 return status;
766
767         obj = (union acpi_object *) out.pointer;
768         if (obj && obj->type == ACPI_TYPE_BUFFER &&
769                 obj->buffer.length == sizeof(u32)) {
770                 devices = *((u32 *) obj->buffer.pointer);
771         } else {
772                 kfree(out.pointer);
773                 return AE_ERROR;
774         }
775
776         /* Not sure on the meaning of the relevant bits yet to detect these */
777         interface->capability |= ACER_CAP_WIRELESS;
778         interface->capability |= ACER_CAP_THREEG;
779
780         /* WMID always provides brightness methods */
781         interface->capability |= ACER_CAP_BRIGHTNESS;
782
783         if (devices & 0x10)
784                 interface->capability |= ACER_CAP_BLUETOOTH;
785
786         if (!(devices & 0x20))
787                 max_brightness = 0x9;
788
789         kfree(out.pointer);
790         return status;
791 }
792
793 static struct wmi_interface wmid_interface = {
794         .type = ACER_WMID,
795 };
796
797 /*
798  * Generic Device (interface-independent)
799  */
800
801 static acpi_status get_u32(u32 *value, u32 cap)
802 {
803         acpi_status status = AE_ERROR;
804
805         switch (interface->type) {
806         case ACER_AMW0:
807                 status = AMW0_get_u32(value, cap, interface);
808                 break;
809         case ACER_AMW0_V2:
810                 if (cap == ACER_CAP_MAILLED) {
811                         status = AMW0_get_u32(value, cap, interface);
812                         break;
813                 }
814         case ACER_WMID:
815                 status = WMID_get_u32(value, cap, interface);
816                 break;
817         }
818
819         return status;
820 }
821
822 static acpi_status set_u32(u32 value, u32 cap)
823 {
824         acpi_status status;
825
826         if (interface->capability & cap) {
827                 switch (interface->type) {
828                 case ACER_AMW0:
829                         return AMW0_set_u32(value, cap, interface);
830                 case ACER_AMW0_V2:
831                         if (cap == ACER_CAP_MAILLED)
832                                 return AMW0_set_u32(value, cap, interface);
833
834                         /*
835                          * On some models, some WMID methods don't toggle
836                          * properly. For those cases, we want to run the AMW0
837                          * method afterwards to be certain we've really toggled
838                          * the device state.
839                          */
840                         if (cap == ACER_CAP_WIRELESS ||
841                                 cap == ACER_CAP_BLUETOOTH) {
842                                 status = WMID_set_u32(value, cap, interface);
843                                 if (ACPI_FAILURE(status))
844                                         return status;
845
846                                 return AMW0_set_u32(value, cap, interface);
847                         }
848                 case ACER_WMID:
849                         return WMID_set_u32(value, cap, interface);
850                 default:
851                         return AE_BAD_PARAMETER;
852                 }
853         }
854         return AE_BAD_PARAMETER;
855 }
856
857 static void __init acer_commandline_init(void)
858 {
859         /*
860          * These will all fail silently if the value given is invalid, or the
861          * capability isn't available on the given interface
862          */
863         set_u32(mailled, ACER_CAP_MAILLED);
864         set_u32(threeg, ACER_CAP_THREEG);
865         set_u32(brightness, ACER_CAP_BRIGHTNESS);
866 }
867
868 /*
869  * LED device (Mail LED only, no other LEDs known yet)
870  */
871 static void mail_led_set(struct led_classdev *led_cdev,
872 enum led_brightness value)
873 {
874         set_u32(value, ACER_CAP_MAILLED);
875 }
876
877 static struct led_classdev mail_led = {
878         .name = "acer-wmi::mail",
879         .brightness_set = mail_led_set,
880 };
881
882 static int __devinit acer_led_init(struct device *dev)
883 {
884         return led_classdev_register(dev, &mail_led);
885 }
886
887 static void acer_led_exit(void)
888 {
889         led_classdev_unregister(&mail_led);
890 }
891
892 /*
893  * Backlight device
894  */
895 static struct backlight_device *acer_backlight_device;
896
897 static int read_brightness(struct backlight_device *bd)
898 {
899         u32 value;
900         get_u32(&value, ACER_CAP_BRIGHTNESS);
901         return value;
902 }
903
904 static int update_bl_status(struct backlight_device *bd)
905 {
906         int intensity = bd->props.brightness;
907
908         if (bd->props.power != FB_BLANK_UNBLANK)
909                 intensity = 0;
910         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
911                 intensity = 0;
912
913         set_u32(intensity, ACER_CAP_BRIGHTNESS);
914
915         return 0;
916 }
917
918 static struct backlight_ops acer_bl_ops = {
919         .get_brightness = read_brightness,
920         .update_status = update_bl_status,
921 };
922
923 static int __devinit acer_backlight_init(struct device *dev)
924 {
925         struct backlight_properties props;
926         struct backlight_device *bd;
927
928         memset(&props, 0, sizeof(struct backlight_properties));
929         props.max_brightness = max_brightness;
930         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
931                                        &props);
932         if (IS_ERR(bd)) {
933                 printk(ACER_ERR "Could not register Acer backlight device\n");
934                 acer_backlight_device = NULL;
935                 return PTR_ERR(bd);
936         }
937
938         acer_backlight_device = bd;
939
940         bd->props.power = FB_BLANK_UNBLANK;
941         bd->props.brightness = read_brightness(bd);
942         backlight_update_status(bd);
943         return 0;
944 }
945
946 static void acer_backlight_exit(void)
947 {
948         backlight_device_unregister(acer_backlight_device);
949 }
950
951 /*
952  * Rfkill devices
953  */
954 static void acer_rfkill_update(struct work_struct *ignored);
955 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
956 static void acer_rfkill_update(struct work_struct *ignored)
957 {
958         u32 state;
959         acpi_status status;
960
961         status = get_u32(&state, ACER_CAP_WIRELESS);
962         if (ACPI_SUCCESS(status))
963                 rfkill_set_sw_state(wireless_rfkill, !state);
964
965         if (has_cap(ACER_CAP_BLUETOOTH)) {
966                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
967                 if (ACPI_SUCCESS(status))
968                         rfkill_set_sw_state(bluetooth_rfkill, !state);
969         }
970
971         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
972 }
973
974 static int acer_rfkill_set(void *data, bool blocked)
975 {
976         acpi_status status;
977         u32 cap = (unsigned long)data;
978         status = set_u32(!blocked, cap);
979         if (ACPI_FAILURE(status))
980                 return -ENODEV;
981         return 0;
982 }
983
984 static const struct rfkill_ops acer_rfkill_ops = {
985         .set_block = acer_rfkill_set,
986 };
987
988 static struct rfkill *acer_rfkill_register(struct device *dev,
989                                            enum rfkill_type type,
990                                            char *name, u32 cap)
991 {
992         int err;
993         struct rfkill *rfkill_dev;
994
995         rfkill_dev = rfkill_alloc(name, dev, type,
996                                   &acer_rfkill_ops,
997                                   (void *)(unsigned long)cap);
998         if (!rfkill_dev)
999                 return ERR_PTR(-ENOMEM);
1000
1001         err = rfkill_register(rfkill_dev);
1002         if (err) {
1003                 rfkill_destroy(rfkill_dev);
1004                 return ERR_PTR(err);
1005         }
1006         return rfkill_dev;
1007 }
1008
1009 static int acer_rfkill_init(struct device *dev)
1010 {
1011         wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1012                 "acer-wireless", ACER_CAP_WIRELESS);
1013         if (IS_ERR(wireless_rfkill))
1014                 return PTR_ERR(wireless_rfkill);
1015
1016         if (has_cap(ACER_CAP_BLUETOOTH)) {
1017                 bluetooth_rfkill = acer_rfkill_register(dev,
1018                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1019                         ACER_CAP_BLUETOOTH);
1020                 if (IS_ERR(bluetooth_rfkill)) {
1021                         rfkill_unregister(wireless_rfkill);
1022                         rfkill_destroy(wireless_rfkill);
1023                         return PTR_ERR(bluetooth_rfkill);
1024                 }
1025         }
1026
1027         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1028
1029         return 0;
1030 }
1031
1032 static void acer_rfkill_exit(void)
1033 {
1034         cancel_delayed_work_sync(&acer_rfkill_work);
1035
1036         rfkill_unregister(wireless_rfkill);
1037         rfkill_destroy(wireless_rfkill);
1038
1039         if (has_cap(ACER_CAP_BLUETOOTH)) {
1040                 rfkill_unregister(bluetooth_rfkill);
1041                 rfkill_destroy(bluetooth_rfkill);
1042         }
1043         return;
1044 }
1045
1046 /*
1047  * sysfs interface
1048  */
1049 static ssize_t show_bool_threeg(struct device *dev,
1050         struct device_attribute *attr, char *buf)
1051 {
1052         u32 result; \
1053         acpi_status status = get_u32(&result, ACER_CAP_THREEG);
1054         if (ACPI_SUCCESS(status))
1055                 return sprintf(buf, "%u\n", result);
1056         return sprintf(buf, "Read error\n");
1057 }
1058
1059 static ssize_t set_bool_threeg(struct device *dev,
1060         struct device_attribute *attr, const char *buf, size_t count)
1061 {
1062         u32 tmp = simple_strtoul(buf, NULL, 10);
1063         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1064                 if (ACPI_FAILURE(status))
1065                         return -EINVAL;
1066         return count;
1067 }
1068 static DEVICE_ATTR(threeg, S_IWUGO | S_IRUGO | S_IWUSR, show_bool_threeg,
1069         set_bool_threeg);
1070
1071 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1072         char *buf)
1073 {
1074         switch (interface->type) {
1075         case ACER_AMW0:
1076                 return sprintf(buf, "AMW0\n");
1077         case ACER_AMW0_V2:
1078                 return sprintf(buf, "AMW0 v2\n");
1079         case ACER_WMID:
1080                 return sprintf(buf, "WMID\n");
1081         default:
1082                 return sprintf(buf, "Error!\n");
1083         }
1084 }
1085
1086 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1087
1088 /*
1089  * debugfs functions
1090  */
1091 static u32 get_wmid_devices(void)
1092 {
1093         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1094         union acpi_object *obj;
1095         acpi_status status;
1096         u32 devices = 0;
1097
1098         status = wmi_query_block(WMID_GUID2, 1, &out);
1099         if (ACPI_FAILURE(status))
1100                 return 0;
1101
1102         obj = (union acpi_object *) out.pointer;
1103         if (obj && obj->type == ACPI_TYPE_BUFFER &&
1104                 obj->buffer.length == sizeof(u32)) {
1105                 devices = *((u32 *) obj->buffer.pointer);
1106         }
1107
1108         kfree(out.pointer);
1109         return devices;
1110 }
1111
1112 /*
1113  * Platform device
1114  */
1115 static int __devinit acer_platform_probe(struct platform_device *device)
1116 {
1117         int err;
1118
1119         if (has_cap(ACER_CAP_MAILLED)) {
1120                 err = acer_led_init(&device->dev);
1121                 if (err)
1122                         goto error_mailled;
1123         }
1124
1125         if (has_cap(ACER_CAP_BRIGHTNESS)) {
1126                 err = acer_backlight_init(&device->dev);
1127                 if (err)
1128                         goto error_brightness;
1129         }
1130
1131         err = acer_rfkill_init(&device->dev);
1132         if (err)
1133                 goto error_rfkill;
1134
1135         return err;
1136
1137 error_rfkill:
1138         if (has_cap(ACER_CAP_BRIGHTNESS))
1139                 acer_backlight_exit();
1140 error_brightness:
1141         if (has_cap(ACER_CAP_MAILLED))
1142                 acer_led_exit();
1143 error_mailled:
1144         return err;
1145 }
1146
1147 static int acer_platform_remove(struct platform_device *device)
1148 {
1149         if (has_cap(ACER_CAP_MAILLED))
1150                 acer_led_exit();
1151         if (has_cap(ACER_CAP_BRIGHTNESS))
1152                 acer_backlight_exit();
1153
1154         acer_rfkill_exit();
1155         return 0;
1156 }
1157
1158 static int acer_platform_suspend(struct platform_device *dev,
1159 pm_message_t state)
1160 {
1161         u32 value;
1162         struct acer_data *data = &interface->data;
1163
1164         if (!data)
1165                 return -ENOMEM;
1166
1167         if (has_cap(ACER_CAP_MAILLED)) {
1168                 get_u32(&value, ACER_CAP_MAILLED);
1169                 data->mailled = value;
1170         }
1171
1172         if (has_cap(ACER_CAP_BRIGHTNESS)) {
1173                 get_u32(&value, ACER_CAP_BRIGHTNESS);
1174                 data->brightness = value;
1175         }
1176
1177         return 0;
1178 }
1179
1180 static int acer_platform_resume(struct platform_device *device)
1181 {
1182         struct acer_data *data = &interface->data;
1183
1184         if (!data)
1185                 return -ENOMEM;
1186
1187         if (has_cap(ACER_CAP_MAILLED))
1188                 set_u32(data->mailled, ACER_CAP_MAILLED);
1189
1190         if (has_cap(ACER_CAP_BRIGHTNESS))
1191                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1192
1193         return 0;
1194 }
1195
1196 static struct platform_driver acer_platform_driver = {
1197         .driver = {
1198                 .name = "acer-wmi",
1199                 .owner = THIS_MODULE,
1200         },
1201         .probe = acer_platform_probe,
1202         .remove = acer_platform_remove,
1203         .suspend = acer_platform_suspend,
1204         .resume = acer_platform_resume,
1205 };
1206
1207 static struct platform_device *acer_platform_device;
1208
1209 static int remove_sysfs(struct platform_device *device)
1210 {
1211         if (has_cap(ACER_CAP_THREEG))
1212                 device_remove_file(&device->dev, &dev_attr_threeg);
1213
1214         device_remove_file(&device->dev, &dev_attr_interface);
1215
1216         return 0;
1217 }
1218
1219 static int create_sysfs(void)
1220 {
1221         int retval = -ENOMEM;
1222
1223         if (has_cap(ACER_CAP_THREEG)) {
1224                 retval = device_create_file(&acer_platform_device->dev,
1225                         &dev_attr_threeg);
1226                 if (retval)
1227                         goto error_sysfs;
1228         }
1229
1230         retval = device_create_file(&acer_platform_device->dev,
1231                 &dev_attr_interface);
1232         if (retval)
1233                 goto error_sysfs;
1234
1235         return 0;
1236
1237 error_sysfs:
1238                 remove_sysfs(acer_platform_device);
1239         return retval;
1240 }
1241
1242 static void remove_debugfs(void)
1243 {
1244         debugfs_remove(interface->debug.devices);
1245         debugfs_remove(interface->debug.root);
1246 }
1247
1248 static int create_debugfs(void)
1249 {
1250         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1251         if (!interface->debug.root) {
1252                 printk(ACER_ERR "Failed to create debugfs directory");
1253                 return -ENOMEM;
1254         }
1255
1256         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1257                                         interface->debug.root,
1258                                         &interface->debug.wmid_devices);
1259         if (!interface->debug.devices)
1260                 goto error_debugfs;
1261
1262         return 0;
1263
1264 error_debugfs:
1265         remove_debugfs();
1266         return -ENOMEM;
1267 }
1268
1269 static int __init acer_wmi_init(void)
1270 {
1271         int err;
1272
1273         printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
1274
1275         if (dmi_check_system(acer_blacklist)) {
1276                 printk(ACER_INFO "Blacklisted hardware detected - "
1277                                 "not loading\n");
1278                 return -ENODEV;
1279         }
1280
1281         find_quirks();
1282
1283         /*
1284          * Detect which ACPI-WMI interface we're using.
1285          */
1286         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1287                 interface = &AMW0_V2_interface;
1288
1289         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1290                 interface = &wmid_interface;
1291
1292         if (wmi_has_guid(WMID_GUID2) && interface) {
1293                 if (ACPI_FAILURE(WMID_set_capabilities())) {
1294                         printk(ACER_ERR "Unable to detect available WMID "
1295                                         "devices\n");
1296                         return -ENODEV;
1297                 }
1298         } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1299                 printk(ACER_ERR "No WMID device detection method found\n");
1300                 return -ENODEV;
1301         }
1302
1303         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1304                 interface = &AMW0_interface;
1305
1306                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1307                         printk(ACER_ERR "Unable to detect available AMW0 "
1308                                         "devices\n");
1309                         return -ENODEV;
1310                 }
1311         }
1312
1313         if (wmi_has_guid(AMW0_GUID1))
1314                 AMW0_find_mailled();
1315
1316         if (!interface) {
1317                 printk(ACER_ERR "No or unsupported WMI interface, unable to "
1318                                 "load\n");
1319                 return -ENODEV;
1320         }
1321
1322         set_quirks();
1323
1324         if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1325                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1326                 printk(ACER_INFO "Brightness must be controlled by "
1327                        "generic video driver\n");
1328         }
1329
1330         err = platform_driver_register(&acer_platform_driver);
1331         if (err) {
1332                 printk(ACER_ERR "Unable to register platform driver.\n");
1333                 goto error_platform_register;
1334         }
1335
1336         acer_platform_device = platform_device_alloc("acer-wmi", -1);
1337         if (!acer_platform_device) {
1338                 err = -ENOMEM;
1339                 goto error_device_alloc;
1340         }
1341
1342         err = platform_device_add(acer_platform_device);
1343         if (err)
1344                 goto error_device_add;
1345
1346         err = create_sysfs();
1347         if (err)
1348                 goto error_create_sys;
1349
1350         if (wmi_has_guid(WMID_GUID2)) {
1351                 interface->debug.wmid_devices = get_wmid_devices();
1352                 err = create_debugfs();
1353                 if (err)
1354                         goto error_create_debugfs;
1355         }
1356
1357         /* Override any initial settings with values from the commandline */
1358         acer_commandline_init();
1359
1360         return 0;
1361
1362 error_create_debugfs:
1363         remove_sysfs(acer_platform_device);
1364 error_create_sys:
1365         platform_device_del(acer_platform_device);
1366 error_device_add:
1367         platform_device_put(acer_platform_device);
1368 error_device_alloc:
1369         platform_driver_unregister(&acer_platform_driver);
1370 error_platform_register:
1371         return err;
1372 }
1373
1374 static void __exit acer_wmi_exit(void)
1375 {
1376         remove_sysfs(acer_platform_device);
1377         remove_debugfs();
1378         platform_device_unregister(acer_platform_device);
1379         platform_driver_unregister(&acer_platform_driver);
1380
1381         printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1382         return;
1383 }
1384
1385 module_init(acer_wmi_init);
1386 module_exit(acer_wmi_exit);