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ocfs2: Make the left masklogs compat.
[taoma-kernel.git] / drivers / platform / x86 / acer-wmi.c
blob38b34a73866a893e030bca2345e6c383129d7e19
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 #include <linux/input.h>
41 #include <linux/input/sparse-keymap.h>
42 #include <linux/dmi.h>
43
44 #include <acpi/acpi_drivers.h>
45
46 MODULE_AUTHOR("Carlos Corbacho");
47 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
48 MODULE_LICENSE("GPL");
49
50 #define ACER_LOGPREFIX "acer-wmi: "
51 #define ACER_ERR KERN_ERR ACER_LOGPREFIX
52 #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
53 #define ACER_INFO KERN_INFO ACER_LOGPREFIX
54 #define ACER_WARNING KERN_WARNING ACER_LOGPREFIX
55
56 /*
57 * Magic Number
58 * Meaning is unknown - this number is required for writing to ACPI for AMW0
59 * (it's also used in acerhk when directly accessing the BIOS)
60 */
61 #define ACER_AMW0_WRITE 0x9610
62
63 /*
64 * Bit masks for the AMW0 interface
65 */
66 #define ACER_AMW0_WIRELESS_MASK 0x35
67 #define ACER_AMW0_BLUETOOTH_MASK 0x34
68 #define ACER_AMW0_MAILLED_MASK 0x31
69
70 /*
71 * Method IDs for WMID interface
72 */
73 #define ACER_WMID_GET_WIRELESS_METHODID 1
74 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
75 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
76 #define ACER_WMID_SET_WIRELESS_METHODID 4
77 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
78 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
79 #define ACER_WMID_GET_THREEG_METHODID 10
80 #define ACER_WMID_SET_THREEG_METHODID 11
81
82 /*
83 * Acer ACPI method GUIDs
84 */
85 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
86 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
87 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
88 #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
89 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
90
91 /*
92 * Acer ACPI event GUIDs
93 */
94 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
95
96 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
97 MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
98 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
99
100 enum acer_wmi_event_ids {
101 WMID_HOTKEY_EVENT = 0x1,
102 };
103
104 static const struct key_entry acer_wmi_keymap[] = {
105 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
106 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
107 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
108 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
109 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
110 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
111 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
112 {KE_KEY, 0x82, {KEY_F22} }, /* Touch Pad On/Off */
113 {KE_END, 0}
114 };
115
116 static struct input_dev *acer_wmi_input_dev;
117
118 struct event_return_value {
119 u8 function;
120 u8 key_num;
121 u16 device_state;
122 u32 reserved;
123 } __attribute__((packed));
124
125 /*
126 * GUID3 Get Device Status device flags
127 */
128 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
129 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
130 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
131
132 struct lm_input_params {
133 u8 function_num; /* Function Number */
134 u16 commun_devices; /* Communication type devices default status */
135 u16 devices; /* Other type devices default status */
136 u8 lm_status; /* Launch Manager Status */
137 u16 reserved;
138 } __attribute__((packed));
139
140 struct lm_return_value {
141 u8 error_code; /* Error Code */
142 u8 ec_return_value; /* EC Return Value */
143 u16 reserved;
144 } __attribute__((packed));
145
146 struct wmid3_gds_input_param { /* Get Device Status input parameter */
147 u8 function_num; /* Function Number */
148 u8 hotkey_number; /* Hotkey Number */
149 u16 devices; /* Get Device */
150 } __attribute__((packed));
151
152 struct wmid3_gds_return_value { /* Get Device Status return value*/
153 u8 error_code; /* Error Code */
154 u8 ec_return_value; /* EC Return Value */
155 u16 devices; /* Current Device Status */
156 u32 reserved;
157 } __attribute__((packed));
158
159 struct hotkey_function_type_aa {
160 u8 type;
161 u8 length;
162 u16 handle;
163 u16 commun_func_bitmap;
164 } __attribute__((packed));
165
166 /*
167 * Interface capability flags
168 */
169 #define ACER_CAP_MAILLED (1<<0)
170 #define ACER_CAP_WIRELESS (1<<1)
171 #define ACER_CAP_BLUETOOTH (1<<2)
172 #define ACER_CAP_BRIGHTNESS (1<<3)
173 #define ACER_CAP_THREEG (1<<4)
174 #define ACER_CAP_ANY (0xFFFFFFFF)
175
176 /*
177 * Interface type flags
178 */
179 enum interface_flags {
180 ACER_AMW0,
181 ACER_AMW0_V2,
182 ACER_WMID,
183 };
184
185 #define ACER_DEFAULT_WIRELESS 0
186 #define ACER_DEFAULT_BLUETOOTH 0
187 #define ACER_DEFAULT_MAILLED 0
188 #define ACER_DEFAULT_THREEG 0
189
190 static int max_brightness = 0xF;
191
192 static int mailled = -1;
193 static int brightness = -1;
194 static int threeg = -1;
195 static int force_series;
196 static bool ec_raw_mode;
197 static bool has_type_aa;
198
199 module_param(mailled, int, 0444);
200 module_param(brightness, int, 0444);
201 module_param(threeg, int, 0444);
202 module_param(force_series, int, 0444);
203 module_param(ec_raw_mode, bool, 0444);
204 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
205 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
206 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
207 MODULE_PARM_DESC(force_series, "Force a different laptop series");
208 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
209
210 struct acer_data {
211 int mailled;
212 int threeg;
213 int brightness;
214 };
215
216 struct acer_debug {
217 struct dentry *root;
218 struct dentry *devices;
219 u32 wmid_devices;
220 };
221
222 static struct rfkill *wireless_rfkill;
223 static struct rfkill *bluetooth_rfkill;
224 static struct rfkill *threeg_rfkill;
225
226 /* Each low-level interface must define at least some of the following */
227 struct wmi_interface {
228 /* The WMI device type */
229 u32 type;
230
231 /* The capabilities this interface provides */
232 u32 capability;
233
234 /* Private data for the current interface */
235 struct acer_data data;
236
237 /* debugfs entries associated with this interface */
238 struct acer_debug debug;
239 };
240
241 /* The static interface pointer, points to the currently detected interface */
242 static struct wmi_interface *interface;
243
244 /*
245 * Embedded Controller quirks
246 * Some laptops require us to directly access the EC to either enable or query
247 * features that are not available through WMI.
248 */
249
250 struct quirk_entry {
251 u8 wireless;
252 u8 mailled;
253 s8 brightness;
254 u8 bluetooth;
255 };
256
257 static struct quirk_entry *quirks;
258
259 static void set_quirks(void)
260 {
261 if (!interface)
262 return;
263
264 if (quirks->mailled)
265 interface->capability |= ACER_CAP_MAILLED;
266
267 if (quirks->brightness)
268 interface->capability |= ACER_CAP_BRIGHTNESS;
269 }
270
271 static int dmi_matched(const struct dmi_system_id *dmi)
272 {
273 quirks = dmi->driver_data;
274 return 1;
275 }
276
277 static struct quirk_entry quirk_unknown = {
278 };
279
280 static struct quirk_entry quirk_acer_aspire_1520 = {
281 .brightness = -1,
282 };
283
284 static struct quirk_entry quirk_acer_travelmate_2490 = {
285 .mailled = 1,
286 };
287
288 /* This AMW0 laptop has no bluetooth */
289 static struct quirk_entry quirk_medion_md_98300 = {
290 .wireless = 1,
291 };
292
293 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
294 .wireless = 2,
295 };
296
297 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
298 static struct dmi_system_id __devinitdata acer_blacklist[] = {
299 {
300 .ident = "Acer Aspire One (SSD)",
301 .matches = {
302 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
303 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
304 },
305 },
306 {
307 .ident = "Acer Aspire One (HDD)",
308 .matches = {
309 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
310 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
311 },
312 },
313 {}
314 };
315
316 static struct dmi_system_id acer_quirks[] = {
317 {
318 .callback = dmi_matched,
319 .ident = "Acer Aspire 1360",
320 .matches = {
321 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
322 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
323 },
324 .driver_data = &quirk_acer_aspire_1520,
325 },
326 {
327 .callback = dmi_matched,
328 .ident = "Acer Aspire 1520",
329 .matches = {
330 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
331 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
332 },
333 .driver_data = &quirk_acer_aspire_1520,
334 },
335 {
336 .callback = dmi_matched,
337 .ident = "Acer Aspire 3100",
338 .matches = {
339 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
340 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
341 },
342 .driver_data = &quirk_acer_travelmate_2490,
343 },
344 {
345 .callback = dmi_matched,
346 .ident = "Acer Aspire 3610",
347 .matches = {
348 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
349 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
350 },
351 .driver_data = &quirk_acer_travelmate_2490,
352 },
353 {
354 .callback = dmi_matched,
355 .ident = "Acer Aspire 5100",
356 .matches = {
357 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
358 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
359 },
360 .driver_data = &quirk_acer_travelmate_2490,
361 },
362 {
363 .callback = dmi_matched,
364 .ident = "Acer Aspire 5610",
365 .matches = {
366 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
367 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
368 },
369 .driver_data = &quirk_acer_travelmate_2490,
370 },
371 {
372 .callback = dmi_matched,
373 .ident = "Acer Aspire 5630",
374 .matches = {
375 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
376 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
377 },
378 .driver_data = &quirk_acer_travelmate_2490,
379 },
380 {
381 .callback = dmi_matched,
382 .ident = "Acer Aspire 5650",
383 .matches = {
384 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
385 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
386 },
387 .driver_data = &quirk_acer_travelmate_2490,
388 },
389 {
390 .callback = dmi_matched,
391 .ident = "Acer Aspire 5680",
392 .matches = {
393 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
394 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
395 },
396 .driver_data = &quirk_acer_travelmate_2490,
397 },
398 {
399 .callback = dmi_matched,
400 .ident = "Acer Aspire 9110",
401 .matches = {
402 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
403 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
404 },
405 .driver_data = &quirk_acer_travelmate_2490,
406 },
407 {
408 .callback = dmi_matched,
409 .ident = "Acer TravelMate 2490",
410 .matches = {
411 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
412 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
413 },
414 .driver_data = &quirk_acer_travelmate_2490,
415 },
416 {
417 .callback = dmi_matched,
418 .ident = "Acer TravelMate 4200",
419 .matches = {
420 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
421 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
422 },
423 .driver_data = &quirk_acer_travelmate_2490,
424 },
425 {
426 .callback = dmi_matched,
427 .ident = "Fujitsu Siemens Amilo Li 1718",
428 .matches = {
429 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
430 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
431 },
432 .driver_data = &quirk_fujitsu_amilo_li_1718,
433 },
434 {
435 .callback = dmi_matched,
436 .ident = "Medion MD 98300",
437 .matches = {
438 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
439 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
440 },
441 .driver_data = &quirk_medion_md_98300,
442 },
443 {}
444 };
445
446 /* Find which quirks are needed for a particular vendor/ model pair */
447 static void find_quirks(void)
448 {
449 if (!force_series) {
450 dmi_check_system(acer_quirks);
451 } else if (force_series == 2490) {
452 quirks = &quirk_acer_travelmate_2490;
453 }
454
455 if (quirks == NULL)
456 quirks = &quirk_unknown;
457
458 set_quirks();
459 }
460
461 /*
462 * General interface convenience methods
463 */
464
465 static bool has_cap(u32 cap)
466 {
467 if ((interface->capability & cap) != 0)
468 return 1;
469
470 return 0;
471 }
472
473 /*
474 * AMW0 (V1) interface
475 */
476 struct wmab_args {
477 u32 eax;
478 u32 ebx;
479 u32 ecx;
480 u32 edx;
481 };
482
483 struct wmab_ret {
484 u32 eax;
485 u32 ebx;
486 u32 ecx;
487 u32 edx;
488 u32 eex;
489 };
490
491 static acpi_status wmab_execute(struct wmab_args *regbuf,
492 struct acpi_buffer *result)
493 {
494 struct acpi_buffer input;
495 acpi_status status;
496 input.length = sizeof(struct wmab_args);
497 input.pointer = (u8 *)regbuf;
498
499 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
500
501 return status;
502 }
503
504 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
505 struct wmi_interface *iface)
506 {
507 int err;
508 u8 result;
509
510 switch (cap) {
511 case ACER_CAP_MAILLED:
512 switch (quirks->mailled) {
513 default:
514 err = ec_read(0xA, &result);
515 if (err)
516 return AE_ERROR;
517 *value = (result >> 7) & 0x1;
518 return AE_OK;
519 }
520 break;
521 case ACER_CAP_WIRELESS:
522 switch (quirks->wireless) {
523 case 1:
524 err = ec_read(0x7B, &result);
525 if (err)
526 return AE_ERROR;
527 *value = result & 0x1;
528 return AE_OK;
529 case 2:
530 err = ec_read(0x71, &result);
531 if (err)
532 return AE_ERROR;
533 *value = result & 0x1;
534 return AE_OK;
535 default:
536 err = ec_read(0xA, &result);
537 if (err)
538 return AE_ERROR;
539 *value = (result >> 2) & 0x1;
540 return AE_OK;
541 }
542 break;
543 case ACER_CAP_BLUETOOTH:
544 switch (quirks->bluetooth) {
545 default:
546 err = ec_read(0xA, &result);
547 if (err)
548 return AE_ERROR;
549 *value = (result >> 4) & 0x1;
550 return AE_OK;
551 }
552 break;
553 case ACER_CAP_BRIGHTNESS:
554 switch (quirks->brightness) {
555 default:
556 err = ec_read(0x83, &result);
557 if (err)
558 return AE_ERROR;
559 *value = result;
560 return AE_OK;
561 }
562 break;
563 default:
564 return AE_ERROR;
565 }
566 return AE_OK;
567 }
568
569 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
570 {
571 struct wmab_args args;
572
573 args.eax = ACER_AMW0_WRITE;
574 args.ebx = value ? (1<<8) : 0;
575 args.ecx = args.edx = 0;
576
577 switch (cap) {
578 case ACER_CAP_MAILLED:
579 if (value > 1)
580 return AE_BAD_PARAMETER;
581 args.ebx |= ACER_AMW0_MAILLED_MASK;
582 break;
583 case ACER_CAP_WIRELESS:
584 if (value > 1)
585 return AE_BAD_PARAMETER;
586 args.ebx |= ACER_AMW0_WIRELESS_MASK;
587 break;
588 case ACER_CAP_BLUETOOTH:
589 if (value > 1)
590 return AE_BAD_PARAMETER;
591 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
592 break;
593 case ACER_CAP_BRIGHTNESS:
594 if (value > max_brightness)
595 return AE_BAD_PARAMETER;
596 switch (quirks->brightness) {
597 default:
598 return ec_write(0x83, value);
599 break;
600 }
601 default:
602 return AE_ERROR;
603 }
604
605 /* Actually do the set */
606 return wmab_execute(&args, NULL);
607 }
608
609 static acpi_status AMW0_find_mailled(void)
610 {
611 struct wmab_args args;
612 struct wmab_ret ret;
613 acpi_status status = AE_OK;
614 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
615 union acpi_object *obj;
616
617 args.eax = 0x86;
618 args.ebx = args.ecx = args.edx = 0;
619
620 status = wmab_execute(&args, &out);
621 if (ACPI_FAILURE(status))
622 return status;
623
624 obj = (union acpi_object *) out.pointer;
625 if (obj && obj->type == ACPI_TYPE_BUFFER &&
626 obj->buffer.length == sizeof(struct wmab_ret)) {
627 ret = *((struct wmab_ret *) obj->buffer.pointer);
628 } else {
629 kfree(out.pointer);
630 return AE_ERROR;
631 }
632
633 if (ret.eex & 0x1)
634 interface->capability |= ACER_CAP_MAILLED;
635
636 kfree(out.pointer);
637
638 return AE_OK;
639 }
640
641 static acpi_status AMW0_set_capabilities(void)
642 {
643 struct wmab_args args;
644 struct wmab_ret ret;
645 acpi_status status;
646 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
647 union acpi_object *obj;
648
649 /*
650 * On laptops with this strange GUID (non Acer), normal probing doesn't
651 * work.
652 */
653 if (wmi_has_guid(AMW0_GUID2)) {
654 interface->capability |= ACER_CAP_WIRELESS;
655 return AE_OK;
656 }
657
658 args.eax = ACER_AMW0_WRITE;
659 args.ecx = args.edx = 0;
660
661 args.ebx = 0xa2 << 8;
662 args.ebx |= ACER_AMW0_WIRELESS_MASK;
663
664 status = wmab_execute(&args, &out);
665 if (ACPI_FAILURE(status))
666 return status;
667
668 obj = out.pointer;
669 if (obj && obj->type == ACPI_TYPE_BUFFER &&
670 obj->buffer.length == sizeof(struct wmab_ret)) {
671 ret = *((struct wmab_ret *) obj->buffer.pointer);
672 } else {
673 status = AE_ERROR;
674 goto out;
675 }
676
677 if (ret.eax & 0x1)
678 interface->capability |= ACER_CAP_WIRELESS;
679
680 args.ebx = 2 << 8;
681 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
682
683 /*
684 * It's ok to use existing buffer for next wmab_execute call.
685 * But we need to kfree(out.pointer) if next wmab_execute fail.
686 */
687 status = wmab_execute(&args, &out);
688 if (ACPI_FAILURE(status))
689 goto out;
690
691 obj = (union acpi_object *) out.pointer;
692 if (obj && obj->type == ACPI_TYPE_BUFFER
693 && obj->buffer.length == sizeof(struct wmab_ret)) {
694 ret = *((struct wmab_ret *) obj->buffer.pointer);
695 } else {
696 status = AE_ERROR;
697 goto out;
698 }
699
700 if (ret.eax & 0x1)
701 interface->capability |= ACER_CAP_BLUETOOTH;
702
703 /*
704 * This appears to be safe to enable, since all Wistron based laptops
705 * appear to use the same EC register for brightness, even if they
706 * differ for wireless, etc
707 */
708 if (quirks->brightness >= 0)
709 interface->capability |= ACER_CAP_BRIGHTNESS;
710
711 status = AE_OK;
712 out:
713 kfree(out.pointer);
714 return status;
715 }
716
717 static struct wmi_interface AMW0_interface = {
718 .type = ACER_AMW0,
719 };
720
721 static struct wmi_interface AMW0_V2_interface = {
722 .type = ACER_AMW0_V2,
723 };
724
725 /*
726 * New interface (The WMID interface)
727 */
728 static acpi_status
729 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
730 {
731 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
732 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
733 union acpi_object *obj;
734 u32 tmp;
735 acpi_status status;
736
737 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
738
739 if (ACPI_FAILURE(status))
740 return status;
741
742 obj = (union acpi_object *) result.pointer;
743 if (obj && obj->type == ACPI_TYPE_BUFFER &&
744 obj->buffer.length == sizeof(u32)) {
745 tmp = *((u32 *) obj->buffer.pointer);
746 } else {
747 tmp = 0;
748 }
749
750 if (out)
751 *out = tmp;
752
753 kfree(result.pointer);
754
755 return status;
756 }
757
758 static acpi_status WMID_get_u32(u32 *value, u32 cap,
759 struct wmi_interface *iface)
760 {
761 acpi_status status;
762 u8 tmp;
763 u32 result, method_id = 0;
764
765 switch (cap) {
766 case ACER_CAP_WIRELESS:
767 method_id = ACER_WMID_GET_WIRELESS_METHODID;
768 break;
769 case ACER_CAP_BLUETOOTH:
770 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
771 break;
772 case ACER_CAP_BRIGHTNESS:
773 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
774 break;
775 case ACER_CAP_THREEG:
776 method_id = ACER_WMID_GET_THREEG_METHODID;
777 break;
778 case ACER_CAP_MAILLED:
779 if (quirks->mailled == 1) {
780 ec_read(0x9f, &tmp);
781 *value = tmp & 0x1;
782 return 0;
783 }
784 default:
785 return AE_ERROR;
786 }
787 status = WMI_execute_u32(method_id, 0, &result);
788
789 if (ACPI_SUCCESS(status))
790 *value = (u8)result;
791
792 return status;
793 }
794
795 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
796 {
797 u32 method_id = 0;
798 char param;
799
800 switch (cap) {
801 case ACER_CAP_BRIGHTNESS:
802 if (value > max_brightness)
803 return AE_BAD_PARAMETER;
804 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
805 break;
806 case ACER_CAP_WIRELESS:
807 if (value > 1)
808 return AE_BAD_PARAMETER;
809 method_id = ACER_WMID_SET_WIRELESS_METHODID;
810 break;
811 case ACER_CAP_BLUETOOTH:
812 if (value > 1)
813 return AE_BAD_PARAMETER;
814 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
815 break;
816 case ACER_CAP_THREEG:
817 if (value > 1)
818 return AE_BAD_PARAMETER;
819 method_id = ACER_WMID_SET_THREEG_METHODID;
820 break;
821 case ACER_CAP_MAILLED:
822 if (value > 1)
823 return AE_BAD_PARAMETER;
824 if (quirks->mailled == 1) {
825 param = value ? 0x92 : 0x93;
826 i8042_lock_chip();
827 i8042_command(&param, 0x1059);
828 i8042_unlock_chip();
829 return 0;
830 }
831 break;
832 default:
833 return AE_ERROR;
834 }
835 return WMI_execute_u32(method_id, (u32)value, NULL);
836 }
837
838 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
839 {
840 struct hotkey_function_type_aa *type_aa;
841
842 /* We are looking for OEM-specific Type AAh */
843 if (header->type != 0xAA)
844 return;
845
846 has_type_aa = true;
847 type_aa = (struct hotkey_function_type_aa *) header;
848
849 printk(ACER_INFO "Function bitmap for Communication Button: 0x%x\n",
850 type_aa->commun_func_bitmap);
851
852 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
853 interface->capability |= ACER_CAP_WIRELESS;
854 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
855 interface->capability |= ACER_CAP_THREEG;
856 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
857 interface->capability |= ACER_CAP_BLUETOOTH;
858 }
859
860 static acpi_status WMID_set_capabilities(void)
861 {
862 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
863 union acpi_object *obj;
864 acpi_status status;
865 u32 devices;
866
867 status = wmi_query_block(WMID_GUID2, 1, &out);
868 if (ACPI_FAILURE(status))
869 return status;
870
871 obj = (union acpi_object *) out.pointer;
872 if (obj && obj->type == ACPI_TYPE_BUFFER &&
873 obj->buffer.length == sizeof(u32)) {
874 devices = *((u32 *) obj->buffer.pointer);
875 } else {
876 kfree(out.pointer);
877 return AE_ERROR;
878 }
879
880 dmi_walk(type_aa_dmi_decode, NULL);
881 if (!has_type_aa) {
882 interface->capability |= ACER_CAP_WIRELESS;
883 interface->capability |= ACER_CAP_THREEG;
884 if (devices & 0x10)
885 interface->capability |= ACER_CAP_BLUETOOTH;
886 }
887
888 /* WMID always provides brightness methods */
889 interface->capability |= ACER_CAP_BRIGHTNESS;
890
891 if (!(devices & 0x20))
892 max_brightness = 0x9;
893
894 kfree(out.pointer);
895 return status;
896 }
897
898 static struct wmi_interface wmid_interface = {
899 .type = ACER_WMID,
900 };
901
902 /*
903 * Generic Device (interface-independent)
904 */
905
906 static acpi_status get_u32(u32 *value, u32 cap)
907 {
908 acpi_status status = AE_ERROR;
909
910 switch (interface->type) {
911 case ACER_AMW0:
912 status = AMW0_get_u32(value, cap, interface);
913 break;
914 case ACER_AMW0_V2:
915 if (cap == ACER_CAP_MAILLED) {
916 status = AMW0_get_u32(value, cap, interface);
917 break;
918 }
919 case ACER_WMID:
920 status = WMID_get_u32(value, cap, interface);
921 break;
922 }
923
924 return status;
925 }
926
927 static acpi_status set_u32(u32 value, u32 cap)
928 {
929 acpi_status status;
930
931 if (interface->capability & cap) {
932 switch (interface->type) {
933 case ACER_AMW0:
934 return AMW0_set_u32(value, cap, interface);
935 case ACER_AMW0_V2:
936 if (cap == ACER_CAP_MAILLED)
937 return AMW0_set_u32(value, cap, interface);
938
939 /*
940 * On some models, some WMID methods don't toggle
941 * properly. For those cases, we want to run the AMW0
942 * method afterwards to be certain we've really toggled
943 * the device state.
944 */
945 if (cap == ACER_CAP_WIRELESS ||
946 cap == ACER_CAP_BLUETOOTH) {
947 status = WMID_set_u32(value, cap, interface);
948 if (ACPI_FAILURE(status))
949 return status;
950
951 return AMW0_set_u32(value, cap, interface);
952 }
953 case ACER_WMID:
954 return WMID_set_u32(value, cap, interface);
955 default:
956 return AE_BAD_PARAMETER;
957 }
958 }
959 return AE_BAD_PARAMETER;
960 }
961
962 static void __init acer_commandline_init(void)
963 {
964 /*
965 * These will all fail silently if the value given is invalid, or the
966 * capability isn't available on the given interface
967 */
968 set_u32(mailled, ACER_CAP_MAILLED);
969 if (!has_type_aa)
970 set_u32(threeg, ACER_CAP_THREEG);
971 set_u32(brightness, ACER_CAP_BRIGHTNESS);
972 }
973
974 /*
975 * LED device (Mail LED only, no other LEDs known yet)
976 */
977 static void mail_led_set(struct led_classdev *led_cdev,
978 enum led_brightness value)
979 {
980 set_u32(value, ACER_CAP_MAILLED);
981 }
982
983 static struct led_classdev mail_led = {
984 .name = "acer-wmi::mail",
985 .brightness_set = mail_led_set,
986 };
987
988 static int __devinit acer_led_init(struct device *dev)
989 {
990 return led_classdev_register(dev, &mail_led);
991 }
992
993 static void acer_led_exit(void)
994 {
995 led_classdev_unregister(&mail_led);
996 }
997
998 /*
999 * Backlight device
1000 */
1001 static struct backlight_device *acer_backlight_device;
1002
1003 static int read_brightness(struct backlight_device *bd)
1004 {
1005 u32 value;
1006 get_u32(&value, ACER_CAP_BRIGHTNESS);
1007 return value;
1008 }
1009
1010 static int update_bl_status(struct backlight_device *bd)
1011 {
1012 int intensity = bd->props.brightness;
1013
1014 if (bd->props.power != FB_BLANK_UNBLANK)
1015 intensity = 0;
1016 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1017 intensity = 0;
1018
1019 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1020
1021 return 0;
1022 }
1023
1024 static const struct backlight_ops acer_bl_ops = {
1025 .get_brightness = read_brightness,
1026 .update_status = update_bl_status,
1027 };
1028
1029 static int __devinit acer_backlight_init(struct device *dev)
1030 {
1031 struct backlight_properties props;
1032 struct backlight_device *bd;
1033
1034 memset(&props, 0, sizeof(struct backlight_properties));
1035 props.max_brightness = max_brightness;
1036 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1037 &props);
1038 if (IS_ERR(bd)) {
1039 printk(ACER_ERR "Could not register Acer backlight device\n");
1040 acer_backlight_device = NULL;
1041 return PTR_ERR(bd);
1042 }
1043
1044 acer_backlight_device = bd;
1045
1046 bd->props.power = FB_BLANK_UNBLANK;
1047 bd->props.brightness = read_brightness(bd);
1048 backlight_update_status(bd);
1049 return 0;
1050 }
1051
1052 static void acer_backlight_exit(void)
1053 {
1054 backlight_device_unregister(acer_backlight_device);
1055 }
1056
1057 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1058 {
1059 struct wmid3_gds_return_value return_value;
1060 acpi_status status;
1061 union acpi_object *obj;
1062 struct wmid3_gds_input_param params = {
1063 .function_num = 0x1,
1064 .hotkey_number = 0x01,
1065 .devices = device,
1066 };
1067 struct acpi_buffer input = {
1068 sizeof(struct wmid3_gds_input_param),
1069 &params
1070 };
1071 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1072
1073 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1074 if (ACPI_FAILURE(status))
1075 return status;
1076
1077 obj = output.pointer;
1078
1079 if (!obj)
1080 return AE_ERROR;
1081 else if (obj->type != ACPI_TYPE_BUFFER) {
1082 kfree(obj);
1083 return AE_ERROR;
1084 }
1085 if (obj->buffer.length != 8) {
1086 printk(ACER_WARNING "Unknown buffer length %d\n",
1087 obj->buffer.length);
1088 kfree(obj);
1089 return AE_ERROR;
1090 }
1091
1092 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1093 kfree(obj);
1094
1095 if (return_value.error_code || return_value.ec_return_value)
1096 printk(ACER_WARNING "Get Device Status failed: "
1097 "0x%x - 0x%x\n", return_value.error_code,
1098 return_value.ec_return_value);
1099 else
1100 *value = !!(return_value.devices & device);
1101
1102 return status;
1103 }
1104
1105 static acpi_status get_device_status(u32 *value, u32 cap)
1106 {
1107 if (wmi_has_guid(WMID_GUID3)) {
1108 u16 device;
1109
1110 switch (cap) {
1111 case ACER_CAP_WIRELESS:
1112 device = ACER_WMID3_GDS_WIRELESS;
1113 break;
1114 case ACER_CAP_BLUETOOTH:
1115 device = ACER_WMID3_GDS_BLUETOOTH;
1116 break;
1117 case ACER_CAP_THREEG:
1118 device = ACER_WMID3_GDS_THREEG;
1119 break;
1120 default:
1121 return AE_ERROR;
1122 }
1123 return wmid3_get_device_status(value, device);
1124
1125 } else {
1126 return get_u32(value, cap);
1127 }
1128 }
1129
1130 /*
1131 * Rfkill devices
1132 */
1133 static void acer_rfkill_update(struct work_struct *ignored);
1134 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1135 static void acer_rfkill_update(struct work_struct *ignored)
1136 {
1137 u32 state;
1138 acpi_status status;
1139
1140 status = get_u32(&state, ACER_CAP_WIRELESS);
1141 if (ACPI_SUCCESS(status))
1142 rfkill_set_sw_state(wireless_rfkill, !state);
1143
1144 if (has_cap(ACER_CAP_BLUETOOTH)) {
1145 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1146 if (ACPI_SUCCESS(status))
1147 rfkill_set_sw_state(bluetooth_rfkill, !state);
1148 }
1149
1150 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1151 status = wmid3_get_device_status(&state,
1152 ACER_WMID3_GDS_THREEG);
1153 if (ACPI_SUCCESS(status))
1154 rfkill_set_sw_state(threeg_rfkill, !state);
1155 }
1156
1157 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1158 }
1159
1160 static int acer_rfkill_set(void *data, bool blocked)
1161 {
1162 acpi_status status;
1163 u32 cap = (unsigned long)data;
1164 status = set_u32(!blocked, cap);
1165 if (ACPI_FAILURE(status))
1166 return -ENODEV;
1167 return 0;
1168 }
1169
1170 static const struct rfkill_ops acer_rfkill_ops = {
1171 .set_block = acer_rfkill_set,
1172 };
1173
1174 static struct rfkill *acer_rfkill_register(struct device *dev,
1175 enum rfkill_type type,
1176 char *name, u32 cap)
1177 {
1178 int err;
1179 struct rfkill *rfkill_dev;
1180 u32 state;
1181 acpi_status status;
1182
1183 rfkill_dev = rfkill_alloc(name, dev, type,
1184 &acer_rfkill_ops,
1185 (void *)(unsigned long)cap);
1186 if (!rfkill_dev)
1187 return ERR_PTR(-ENOMEM);
1188
1189 status = get_device_status(&state, cap);
1190 if (ACPI_SUCCESS(status))
1191 rfkill_init_sw_state(rfkill_dev, !state);
1192
1193 err = rfkill_register(rfkill_dev);
1194 if (err) {
1195 rfkill_destroy(rfkill_dev);
1196 return ERR_PTR(err);
1197 }
1198 return rfkill_dev;
1199 }
1200
1201 static int acer_rfkill_init(struct device *dev)
1202 {
1203 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1204 "acer-wireless", ACER_CAP_WIRELESS);
1205 if (IS_ERR(wireless_rfkill))
1206 return PTR_ERR(wireless_rfkill);
1207
1208 if (has_cap(ACER_CAP_BLUETOOTH)) {
1209 bluetooth_rfkill = acer_rfkill_register(dev,
1210 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1211 ACER_CAP_BLUETOOTH);
1212 if (IS_ERR(bluetooth_rfkill)) {
1213 rfkill_unregister(wireless_rfkill);
1214 rfkill_destroy(wireless_rfkill);
1215 return PTR_ERR(bluetooth_rfkill);
1216 }
1217 }
1218
1219 if (has_cap(ACER_CAP_THREEG)) {
1220 threeg_rfkill = acer_rfkill_register(dev,
1221 RFKILL_TYPE_WWAN, "acer-threeg",
1222 ACER_CAP_THREEG);
1223 if (IS_ERR(threeg_rfkill)) {
1224 rfkill_unregister(wireless_rfkill);
1225 rfkill_destroy(wireless_rfkill);
1226 rfkill_unregister(bluetooth_rfkill);
1227 rfkill_destroy(bluetooth_rfkill);
1228 return PTR_ERR(threeg_rfkill);
1229 }
1230 }
1231
1232 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1233
1234 return 0;
1235 }
1236
1237 static void acer_rfkill_exit(void)
1238 {
1239 cancel_delayed_work_sync(&acer_rfkill_work);
1240
1241 rfkill_unregister(wireless_rfkill);
1242 rfkill_destroy(wireless_rfkill);
1243
1244 if (has_cap(ACER_CAP_BLUETOOTH)) {
1245 rfkill_unregister(bluetooth_rfkill);
1246 rfkill_destroy(bluetooth_rfkill);
1247 }
1248
1249 if (has_cap(ACER_CAP_THREEG)) {
1250 rfkill_unregister(threeg_rfkill);
1251 rfkill_destroy(threeg_rfkill);
1252 }
1253 return;
1254 }
1255
1256 /*
1257 * sysfs interface
1258 */
1259 static ssize_t show_bool_threeg(struct device *dev,
1260 struct device_attribute *attr, char *buf)
1261 {
1262 u32 result; \
1263 acpi_status status;
1264 if (wmi_has_guid(WMID_GUID3))
1265 status = wmid3_get_device_status(&result,
1266 ACER_WMID3_GDS_THREEG);
1267 else
1268 status = get_u32(&result, ACER_CAP_THREEG);
1269 if (ACPI_SUCCESS(status))
1270 return sprintf(buf, "%u\n", result);
1271 return sprintf(buf, "Read error\n");
1272 }
1273
1274 static ssize_t set_bool_threeg(struct device *dev,
1275 struct device_attribute *attr, const char *buf, size_t count)
1276 {
1277 u32 tmp = simple_strtoul(buf, NULL, 10);
1278 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1279 if (ACPI_FAILURE(status))
1280 return -EINVAL;
1281 return count;
1282 }
1283 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1284 set_bool_threeg);
1285
1286 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1287 char *buf)
1288 {
1289 switch (interface->type) {
1290 case ACER_AMW0:
1291 return sprintf(buf, "AMW0\n");
1292 case ACER_AMW0_V2:
1293 return sprintf(buf, "AMW0 v2\n");
1294 case ACER_WMID:
1295 return sprintf(buf, "WMID\n");
1296 default:
1297 return sprintf(buf, "Error!\n");
1298 }
1299 }
1300
1301 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1302
1303 static void acer_wmi_notify(u32 value, void *context)
1304 {
1305 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1306 union acpi_object *obj;
1307 struct event_return_value return_value;
1308 acpi_status status;
1309
1310 status = wmi_get_event_data(value, &response);
1311 if (status != AE_OK) {
1312 printk(ACER_WARNING "bad event status 0x%x\n", status);
1313 return;
1314 }
1315
1316 obj = (union acpi_object *)response.pointer;
1317
1318 if (!obj)
1319 return;
1320 if (obj->type != ACPI_TYPE_BUFFER) {
1321 printk(ACER_WARNING "Unknown response received %d\n",
1322 obj->type);
1323 kfree(obj);
1324 return;
1325 }
1326 if (obj->buffer.length != 8) {
1327 printk(ACER_WARNING "Unknown buffer length %d\n",
1328 obj->buffer.length);
1329 kfree(obj);
1330 return;
1331 }
1332
1333 return_value = *((struct event_return_value *)obj->buffer.pointer);
1334 kfree(obj);
1335
1336 switch (return_value.function) {
1337 case WMID_HOTKEY_EVENT:
1338 if (!sparse_keymap_report_event(acer_wmi_input_dev,
1339 return_value.key_num, 1, true))
1340 printk(ACER_WARNING "Unknown key number - 0x%x\n",
1341 return_value.key_num);
1342 break;
1343 default:
1344 printk(ACER_WARNING "Unknown function number - %d - %d\n",
1345 return_value.function, return_value.key_num);
1346 break;
1347 }
1348 }
1349
1350 static acpi_status
1351 wmid3_set_lm_mode(struct lm_input_params *params,
1352 struct lm_return_value *return_value)
1353 {
1354 acpi_status status;
1355 union acpi_object *obj;
1356
1357 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1358 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1359
1360 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1361 if (ACPI_FAILURE(status))
1362 return status;
1363
1364 obj = output.pointer;
1365
1366 if (!obj)
1367 return AE_ERROR;
1368 else if (obj->type != ACPI_TYPE_BUFFER) {
1369 kfree(obj);
1370 return AE_ERROR;
1371 }
1372 if (obj->buffer.length != 4) {
1373 printk(ACER_WARNING "Unknown buffer length %d\n",
1374 obj->buffer.length);
1375 kfree(obj);
1376 return AE_ERROR;
1377 }
1378
1379 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1380 kfree(obj);
1381
1382 return status;
1383 }
1384
1385 static int acer_wmi_enable_ec_raw(void)
1386 {
1387 struct lm_return_value return_value;
1388 acpi_status status;
1389 struct lm_input_params params = {
1390 .function_num = 0x1,
1391 .commun_devices = 0xFFFF,
1392 .devices = 0xFFFF,
1393 .lm_status = 0x00, /* Launch Manager Deactive */
1394 };
1395
1396 status = wmid3_set_lm_mode(&params, &return_value);
1397
1398 if (return_value.error_code || return_value.ec_return_value)
1399 printk(ACER_WARNING "Enabling EC raw mode failed: "
1400 "0x%x - 0x%x\n", return_value.error_code,
1401 return_value.ec_return_value);
1402 else
1403 printk(ACER_INFO "Enabled EC raw mode");
1404
1405 return status;
1406 }
1407
1408 static int acer_wmi_enable_lm(void)
1409 {
1410 struct lm_return_value return_value;
1411 acpi_status status;
1412 struct lm_input_params params = {
1413 .function_num = 0x1,
1414 .commun_devices = 0xFFFF,
1415 .devices = 0xFFFF,
1416 .lm_status = 0x01, /* Launch Manager Active */
1417 };
1418
1419 status = wmid3_set_lm_mode(&params, &return_value);
1420
1421 if (return_value.error_code || return_value.ec_return_value)
1422 printk(ACER_WARNING "Enabling Launch Manager failed: "
1423 "0x%x - 0x%x\n", return_value.error_code,
1424 return_value.ec_return_value);
1425
1426 return status;
1427 }
1428
1429 static int __init acer_wmi_input_setup(void)
1430 {
1431 acpi_status status;
1432 int err;
1433
1434 acer_wmi_input_dev = input_allocate_device();
1435 if (!acer_wmi_input_dev)
1436 return -ENOMEM;
1437
1438 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1439 acer_wmi_input_dev->phys = "wmi/input0";
1440 acer_wmi_input_dev->id.bustype = BUS_HOST;
1441
1442 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1443 if (err)
1444 goto err_free_dev;
1445
1446 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1447 acer_wmi_notify, NULL);
1448 if (ACPI_FAILURE(status)) {
1449 err = -EIO;
1450 goto err_free_keymap;
1451 }
1452
1453 err = input_register_device(acer_wmi_input_dev);
1454 if (err)
1455 goto err_uninstall_notifier;
1456
1457 return 0;
1458
1459 err_uninstall_notifier:
1460 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1461 err_free_keymap:
1462 sparse_keymap_free(acer_wmi_input_dev);
1463 err_free_dev:
1464 input_free_device(acer_wmi_input_dev);
1465 return err;
1466 }
1467
1468 static void acer_wmi_input_destroy(void)
1469 {
1470 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1471 sparse_keymap_free(acer_wmi_input_dev);
1472 input_unregister_device(acer_wmi_input_dev);
1473 }
1474
1475 /*
1476 * debugfs functions
1477 */
1478 static u32 get_wmid_devices(void)
1479 {
1480 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1481 union acpi_object *obj;
1482 acpi_status status;
1483 u32 devices = 0;
1484
1485 status = wmi_query_block(WMID_GUID2, 1, &out);
1486 if (ACPI_FAILURE(status))
1487 return 0;
1488
1489 obj = (union acpi_object *) out.pointer;
1490 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1491 obj->buffer.length == sizeof(u32)) {
1492 devices = *((u32 *) obj->buffer.pointer);
1493 }
1494
1495 kfree(out.pointer);
1496 return devices;
1497 }
1498
1499 /*
1500 * Platform device
1501 */
1502 static int __devinit acer_platform_probe(struct platform_device *device)
1503 {
1504 int err;
1505
1506 if (has_cap(ACER_CAP_MAILLED)) {
1507 err = acer_led_init(&device->dev);
1508 if (err)
1509 goto error_mailled;
1510 }
1511
1512 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1513 err = acer_backlight_init(&device->dev);
1514 if (err)
1515 goto error_brightness;
1516 }
1517
1518 err = acer_rfkill_init(&device->dev);
1519 if (err)
1520 goto error_rfkill;
1521
1522 return err;
1523
1524 error_rfkill:
1525 if (has_cap(ACER_CAP_BRIGHTNESS))
1526 acer_backlight_exit();
1527 error_brightness:
1528 if (has_cap(ACER_CAP_MAILLED))
1529 acer_led_exit();
1530 error_mailled:
1531 return err;
1532 }
1533
1534 static int acer_platform_remove(struct platform_device *device)
1535 {
1536 if (has_cap(ACER_CAP_MAILLED))
1537 acer_led_exit();
1538 if (has_cap(ACER_CAP_BRIGHTNESS))
1539 acer_backlight_exit();
1540
1541 acer_rfkill_exit();
1542 return 0;
1543 }
1544
1545 static int acer_platform_suspend(struct platform_device *dev,
1546 pm_message_t state)
1547 {
1548 u32 value;
1549 struct acer_data *data = &interface->data;
1550
1551 if (!data)
1552 return -ENOMEM;
1553
1554 if (has_cap(ACER_CAP_MAILLED)) {
1555 get_u32(&value, ACER_CAP_MAILLED);
1556 data->mailled = value;
1557 }
1558
1559 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1560 get_u32(&value, ACER_CAP_BRIGHTNESS);
1561 data->brightness = value;
1562 }
1563
1564 return 0;
1565 }
1566
1567 static int acer_platform_resume(struct platform_device *device)
1568 {
1569 struct acer_data *data = &interface->data;
1570
1571 if (!data)
1572 return -ENOMEM;
1573
1574 if (has_cap(ACER_CAP_MAILLED))
1575 set_u32(data->mailled, ACER_CAP_MAILLED);
1576
1577 if (has_cap(ACER_CAP_BRIGHTNESS))
1578 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1579
1580 return 0;
1581 }
1582
1583 static struct platform_driver acer_platform_driver = {
1584 .driver = {
1585 .name = "acer-wmi",
1586 .owner = THIS_MODULE,
1587 },
1588 .probe = acer_platform_probe,
1589 .remove = acer_platform_remove,
1590 .suspend = acer_platform_suspend,
1591 .resume = acer_platform_resume,
1592 };
1593
1594 static struct platform_device *acer_platform_device;
1595
1596 static int remove_sysfs(struct platform_device *device)
1597 {
1598 if (has_cap(ACER_CAP_THREEG))
1599 device_remove_file(&device->dev, &dev_attr_threeg);
1600
1601 device_remove_file(&device->dev, &dev_attr_interface);
1602
1603 return 0;
1604 }
1605
1606 static int create_sysfs(void)
1607 {
1608 int retval = -ENOMEM;
1609
1610 if (has_cap(ACER_CAP_THREEG)) {
1611 retval = device_create_file(&acer_platform_device->dev,
1612 &dev_attr_threeg);
1613 if (retval)
1614 goto error_sysfs;
1615 }
1616
1617 retval = device_create_file(&acer_platform_device->dev,
1618 &dev_attr_interface);
1619 if (retval)
1620 goto error_sysfs;
1621
1622 return 0;
1623
1624 error_sysfs:
1625 remove_sysfs(acer_platform_device);
1626 return retval;
1627 }
1628
1629 static void remove_debugfs(void)
1630 {
1631 debugfs_remove(interface->debug.devices);
1632 debugfs_remove(interface->debug.root);
1633 }
1634
1635 static int create_debugfs(void)
1636 {
1637 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1638 if (!interface->debug.root) {
1639 printk(ACER_ERR "Failed to create debugfs directory");
1640 return -ENOMEM;
1641 }
1642
1643 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1644 interface->debug.root,
1645 &interface->debug.wmid_devices);
1646 if (!interface->debug.devices)
1647 goto error_debugfs;
1648
1649 return 0;
1650
1651 error_debugfs:
1652 remove_debugfs();
1653 return -ENOMEM;
1654 }
1655
1656 static int __init acer_wmi_init(void)
1657 {
1658 int err;
1659
1660 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
1661
1662 if (dmi_check_system(acer_blacklist)) {
1663 printk(ACER_INFO "Blacklisted hardware detected - "
1664 "not loading\n");
1665 return -ENODEV;
1666 }
1667
1668 find_quirks();
1669
1670 /*
1671 * Detect which ACPI-WMI interface we're using.
1672 */
1673 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1674 interface = &AMW0_V2_interface;
1675
1676 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1677 interface = &wmid_interface;
1678
1679 if (wmi_has_guid(WMID_GUID2) && interface) {
1680 if (ACPI_FAILURE(WMID_set_capabilities())) {
1681 printk(ACER_ERR "Unable to detect available WMID "
1682 "devices\n");
1683 return -ENODEV;
1684 }
1685 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1686 printk(ACER_ERR "No WMID device detection method found\n");
1687 return -ENODEV;
1688 }
1689
1690 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1691 interface = &AMW0_interface;
1692
1693 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1694 printk(ACER_ERR "Unable to detect available AMW0 "
1695 "devices\n");
1696 return -ENODEV;
1697 }
1698 }
1699
1700 if (wmi_has_guid(AMW0_GUID1))
1701 AMW0_find_mailled();
1702
1703 if (!interface) {
1704 printk(ACER_INFO "No or unsupported WMI interface, unable to "
1705 "load\n");
1706 return -ENODEV;
1707 }
1708
1709 set_quirks();
1710
1711 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1712 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1713 printk(ACER_INFO "Brightness must be controlled by "
1714 "generic video driver\n");
1715 }
1716
1717 if (wmi_has_guid(WMID_GUID3)) {
1718 if (ec_raw_mode) {
1719 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1720 printk(ACER_ERR "Cannot enable EC raw mode\n");
1721 return -ENODEV;
1722 }
1723 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1724 printk(ACER_ERR "Cannot enable Launch Manager mode\n");
1725 return -ENODEV;
1726 }
1727 } else if (ec_raw_mode) {
1728 printk(ACER_INFO "No WMID EC raw mode enable method\n");
1729 }
1730
1731 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1732 err = acer_wmi_input_setup();
1733 if (err)
1734 return err;
1735 }
1736
1737 err = platform_driver_register(&acer_platform_driver);
1738 if (err) {
1739 printk(ACER_ERR "Unable to register platform driver.\n");
1740 goto error_platform_register;
1741 }
1742
1743 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1744 if (!acer_platform_device) {
1745 err = -ENOMEM;
1746 goto error_device_alloc;
1747 }
1748
1749 err = platform_device_add(acer_platform_device);
1750 if (err)
1751 goto error_device_add;
1752
1753 err = create_sysfs();
1754 if (err)
1755 goto error_create_sys;
1756
1757 if (wmi_has_guid(WMID_GUID2)) {
1758 interface->debug.wmid_devices = get_wmid_devices();
1759 err = create_debugfs();
1760 if (err)
1761 goto error_create_debugfs;
1762 }
1763
1764 /* Override any initial settings with values from the commandline */
1765 acer_commandline_init();
1766
1767 return 0;
1768
1769 error_create_debugfs:
1770 remove_sysfs(acer_platform_device);
1771 error_create_sys:
1772 platform_device_del(acer_platform_device);
1773 error_device_add:
1774 platform_device_put(acer_platform_device);
1775 error_device_alloc:
1776 platform_driver_unregister(&acer_platform_driver);
1777 error_platform_register:
1778 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1779 acer_wmi_input_destroy();
1780
1781 return err;
1782 }
1783
1784 static void __exit acer_wmi_exit(void)
1785 {
1786 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1787 acer_wmi_input_destroy();
1788
1789 remove_sysfs(acer_platform_device);
1790 remove_debugfs();
1791 platform_device_unregister(acer_platform_device);
1792 platform_driver_unregister(&acer_platform_driver);
1793
1794 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1795 return;
1796 }
1797
1798 module_init(acer_wmi_init);
1799 module_exit(acer_wmi_exit);
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