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The discovered bit in PGCCSR register indicates if the device has been
[linux-2.6/next.git] / drivers / platform / x86 / acer-wmi.c
blobaf2bb20cb2fbd39bcc3be8d77e42565cb35b1877
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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/types.h>
31 #include <linux/dmi.h>
32 #include <linux/fb.h>
33 #include <linux/backlight.h>
34 #include <linux/leds.h>
35 #include <linux/platform_device.h>
36 #include <linux/acpi.h>
37 #include <linux/i8042.h>
38 #include <linux/rfkill.h>
39 #include <linux/workqueue.h>
40 #include <linux/debugfs.h>
41 #include <linux/slab.h>
42 #include <linux/input.h>
43 #include <linux/input/sparse-keymap.h>
44
45 #include <acpi/acpi_drivers.h>
46
47 MODULE_AUTHOR("Carlos Corbacho");
48 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
49 MODULE_LICENSE("GPL");
50
51 /*
52 * Magic Number
53 * Meaning is unknown - this number is required for writing to ACPI for AMW0
54 * (it's also used in acerhk when directly accessing the BIOS)
55 */
56 #define ACER_AMW0_WRITE 0x9610
57
58 /*
59 * Bit masks for the AMW0 interface
60 */
61 #define ACER_AMW0_WIRELESS_MASK 0x35
62 #define ACER_AMW0_BLUETOOTH_MASK 0x34
63 #define ACER_AMW0_MAILLED_MASK 0x31
64
65 /*
66 * Method IDs for WMID interface
67 */
68 #define ACER_WMID_GET_WIRELESS_METHODID 1
69 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
70 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
71 #define ACER_WMID_SET_WIRELESS_METHODID 4
72 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
73 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
74 #define ACER_WMID_GET_THREEG_METHODID 10
75 #define ACER_WMID_SET_THREEG_METHODID 11
76
77 /*
78 * Acer ACPI method GUIDs
79 */
80 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
81 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
82 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
83 #define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A"
84 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
85
86 /*
87 * Acer ACPI event GUIDs
88 */
89 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
90
91 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
92 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
93 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
94
95 enum acer_wmi_event_ids {
96 WMID_HOTKEY_EVENT = 0x1,
97 };
98
99 static const struct key_entry acer_wmi_keymap[] = {
100 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
101 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */
102 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */
103 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
104 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
105 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
106 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
107 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
108 {KE_IGNORE, 0x41, {KEY_MUTE} },
109 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
110 {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
111 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
112 {KE_IGNORE, 0x45, {KEY_STOP} },
113 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
114 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
115 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
116 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
117 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
118 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
119 {KE_IGNORE, 0x81, {KEY_SLEEP} },
120 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
121 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
122 {KE_END, 0}
123 };
124
125 static struct input_dev *acer_wmi_input_dev;
126
127 struct event_return_value {
128 u8 function;
129 u8 key_num;
130 u16 device_state;
131 u32 reserved;
132 } __attribute__((packed));
133
134 /*
135 * GUID3 Get Device Status device flags
136 */
137 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
138 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
139 #define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
140 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
141
142 struct lm_input_params {
143 u8 function_num; /* Function Number */
144 u16 commun_devices; /* Communication type devices default status */
145 u16 devices; /* Other type devices default status */
146 u8 lm_status; /* Launch Manager Status */
147 u16 reserved;
148 } __attribute__((packed));
149
150 struct lm_return_value {
151 u8 error_code; /* Error Code */
152 u8 ec_return_value; /* EC Return Value */
153 u16 reserved;
154 } __attribute__((packed));
155
156 struct wmid3_gds_input_param { /* Get Device Status input parameter */
157 u8 function_num; /* Function Number */
158 u8 hotkey_number; /* Hotkey Number */
159 u16 devices; /* Get Device */
160 } __attribute__((packed));
161
162 struct wmid3_gds_return_value { /* Get Device Status return value*/
163 u8 error_code; /* Error Code */
164 u8 ec_return_value; /* EC Return Value */
165 u16 devices; /* Current Device Status */
166 u32 reserved;
167 } __attribute__((packed));
168
169 struct hotkey_function_type_aa {
170 u8 type;
171 u8 length;
172 u16 handle;
173 u16 commun_func_bitmap;
174 } __attribute__((packed));
175
176 /*
177 * Interface capability flags
178 */
179 #define ACER_CAP_MAILLED (1<<0)
180 #define ACER_CAP_WIRELESS (1<<1)
181 #define ACER_CAP_BLUETOOTH (1<<2)
182 #define ACER_CAP_BRIGHTNESS (1<<3)
183 #define ACER_CAP_THREEG (1<<4)
184 #define ACER_CAP_ANY (0xFFFFFFFF)
185
186 /*
187 * Interface type flags
188 */
189 enum interface_flags {
190 ACER_AMW0,
191 ACER_AMW0_V2,
192 ACER_WMID,
193 };
194
195 #define ACER_DEFAULT_WIRELESS 0
196 #define ACER_DEFAULT_BLUETOOTH 0
197 #define ACER_DEFAULT_MAILLED 0
198 #define ACER_DEFAULT_THREEG 0
199
200 static int max_brightness = 0xF;
201
202 static int mailled = -1;
203 static int brightness = -1;
204 static int threeg = -1;
205 static int force_series;
206 static bool ec_raw_mode;
207 static bool has_type_aa;
208
209 module_param(mailled, int, 0444);
210 module_param(brightness, int, 0444);
211 module_param(threeg, int, 0444);
212 module_param(force_series, int, 0444);
213 module_param(ec_raw_mode, bool, 0444);
214 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
215 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
216 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
217 MODULE_PARM_DESC(force_series, "Force a different laptop series");
218 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
219
220 struct acer_data {
221 int mailled;
222 int threeg;
223 int brightness;
224 };
225
226 struct acer_debug {
227 struct dentry *root;
228 struct dentry *devices;
229 u32 wmid_devices;
230 };
231
232 static struct rfkill *wireless_rfkill;
233 static struct rfkill *bluetooth_rfkill;
234 static struct rfkill *threeg_rfkill;
235 static bool rfkill_inited;
236
237 /* Each low-level interface must define at least some of the following */
238 struct wmi_interface {
239 /* The WMI device type */
240 u32 type;
241
242 /* The capabilities this interface provides */
243 u32 capability;
244
245 /* Private data for the current interface */
246 struct acer_data data;
247
248 /* debugfs entries associated with this interface */
249 struct acer_debug debug;
250 };
251
252 /* The static interface pointer, points to the currently detected interface */
253 static struct wmi_interface *interface;
254
255 /*
256 * Embedded Controller quirks
257 * Some laptops require us to directly access the EC to either enable or query
258 * features that are not available through WMI.
259 */
260
261 struct quirk_entry {
262 u8 wireless;
263 u8 mailled;
264 s8 brightness;
265 u8 bluetooth;
266 };
267
268 static struct quirk_entry *quirks;
269
270 static void set_quirks(void)
271 {
272 if (!interface)
273 return;
274
275 if (quirks->mailled)
276 interface->capability |= ACER_CAP_MAILLED;
277
278 if (quirks->brightness)
279 interface->capability |= ACER_CAP_BRIGHTNESS;
280 }
281
282 static int dmi_matched(const struct dmi_system_id *dmi)
283 {
284 quirks = dmi->driver_data;
285 return 1;
286 }
287
288 static struct quirk_entry quirk_unknown = {
289 };
290
291 static struct quirk_entry quirk_acer_aspire_1520 = {
292 .brightness = -1,
293 };
294
295 static struct quirk_entry quirk_acer_travelmate_2490 = {
296 .mailled = 1,
297 };
298
299 /* This AMW0 laptop has no bluetooth */
300 static struct quirk_entry quirk_medion_md_98300 = {
301 .wireless = 1,
302 };
303
304 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
305 .wireless = 2,
306 };
307
308 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
309 .wireless = 3,
310 };
311
312 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
313 static struct dmi_system_id __devinitdata acer_blacklist[] = {
314 {
315 .ident = "Acer Aspire One (SSD)",
316 .matches = {
317 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
318 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
319 },
320 },
321 {
322 .ident = "Acer Aspire One (HDD)",
323 .matches = {
324 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
325 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
326 },
327 },
328 {}
329 };
330
331 static struct dmi_system_id acer_quirks[] = {
332 {
333 .callback = dmi_matched,
334 .ident = "Acer Aspire 1360",
335 .matches = {
336 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
337 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
338 },
339 .driver_data = &quirk_acer_aspire_1520,
340 },
341 {
342 .callback = dmi_matched,
343 .ident = "Acer Aspire 1520",
344 .matches = {
345 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
346 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
347 },
348 .driver_data = &quirk_acer_aspire_1520,
349 },
350 {
351 .callback = dmi_matched,
352 .ident = "Acer Aspire 3100",
353 .matches = {
354 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
355 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
356 },
357 .driver_data = &quirk_acer_travelmate_2490,
358 },
359 {
360 .callback = dmi_matched,
361 .ident = "Acer Aspire 3610",
362 .matches = {
363 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
364 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
365 },
366 .driver_data = &quirk_acer_travelmate_2490,
367 },
368 {
369 .callback = dmi_matched,
370 .ident = "Acer Aspire 5100",
371 .matches = {
372 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
373 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
374 },
375 .driver_data = &quirk_acer_travelmate_2490,
376 },
377 {
378 .callback = dmi_matched,
379 .ident = "Acer Aspire 5610",
380 .matches = {
381 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
382 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
383 },
384 .driver_data = &quirk_acer_travelmate_2490,
385 },
386 {
387 .callback = dmi_matched,
388 .ident = "Acer Aspire 5630",
389 .matches = {
390 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
391 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
392 },
393 .driver_data = &quirk_acer_travelmate_2490,
394 },
395 {
396 .callback = dmi_matched,
397 .ident = "Acer Aspire 5650",
398 .matches = {
399 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
400 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
401 },
402 .driver_data = &quirk_acer_travelmate_2490,
403 },
404 {
405 .callback = dmi_matched,
406 .ident = "Acer Aspire 5680",
407 .matches = {
408 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
409 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
410 },
411 .driver_data = &quirk_acer_travelmate_2490,
412 },
413 {
414 .callback = dmi_matched,
415 .ident = "Acer Aspire 9110",
416 .matches = {
417 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
418 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
419 },
420 .driver_data = &quirk_acer_travelmate_2490,
421 },
422 {
423 .callback = dmi_matched,
424 .ident = "Acer TravelMate 2490",
425 .matches = {
426 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
427 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
428 },
429 .driver_data = &quirk_acer_travelmate_2490,
430 },
431 {
432 .callback = dmi_matched,
433 .ident = "Acer TravelMate 4200",
434 .matches = {
435 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
436 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
437 },
438 .driver_data = &quirk_acer_travelmate_2490,
439 },
440 {
441 .callback = dmi_matched,
442 .ident = "Fujitsu Siemens Amilo Li 1718",
443 .matches = {
444 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
445 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
446 },
447 .driver_data = &quirk_fujitsu_amilo_li_1718,
448 },
449 {
450 .callback = dmi_matched,
451 .ident = "Medion MD 98300",
452 .matches = {
453 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
454 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
455 },
456 .driver_data = &quirk_medion_md_98300,
457 },
458 {
459 .callback = dmi_matched,
460 .ident = "Lenovo Ideapad S205",
461 .matches = {
462 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
463 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
464 },
465 .driver_data = &quirk_lenovo_ideapad_s205,
466 },
467 {}
468 };
469
470 /* Find which quirks are needed for a particular vendor/ model pair */
471 static void find_quirks(void)
472 {
473 if (!force_series) {
474 dmi_check_system(acer_quirks);
475 } else if (force_series == 2490) {
476 quirks = &quirk_acer_travelmate_2490;
477 }
478
479 if (quirks == NULL)
480 quirks = &quirk_unknown;
481
482 set_quirks();
483 }
484
485 /*
486 * General interface convenience methods
487 */
488
489 static bool has_cap(u32 cap)
490 {
491 if ((interface->capability & cap) != 0)
492 return 1;
493
494 return 0;
495 }
496
497 /*
498 * AMW0 (V1) interface
499 */
500 struct wmab_args {
501 u32 eax;
502 u32 ebx;
503 u32 ecx;
504 u32 edx;
505 };
506
507 struct wmab_ret {
508 u32 eax;
509 u32 ebx;
510 u32 ecx;
511 u32 edx;
512 u32 eex;
513 };
514
515 static acpi_status wmab_execute(struct wmab_args *regbuf,
516 struct acpi_buffer *result)
517 {
518 struct acpi_buffer input;
519 acpi_status status;
520 input.length = sizeof(struct wmab_args);
521 input.pointer = (u8 *)regbuf;
522
523 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
524
525 return status;
526 }
527
528 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
529 struct wmi_interface *iface)
530 {
531 int err;
532 u8 result;
533
534 switch (cap) {
535 case ACER_CAP_MAILLED:
536 switch (quirks->mailled) {
537 default:
538 err = ec_read(0xA, &result);
539 if (err)
540 return AE_ERROR;
541 *value = (result >> 7) & 0x1;
542 return AE_OK;
543 }
544 break;
545 case ACER_CAP_WIRELESS:
546 switch (quirks->wireless) {
547 case 1:
548 err = ec_read(0x7B, &result);
549 if (err)
550 return AE_ERROR;
551 *value = result & 0x1;
552 return AE_OK;
553 case 2:
554 err = ec_read(0x71, &result);
555 if (err)
556 return AE_ERROR;
557 *value = result & 0x1;
558 return AE_OK;
559 case 3:
560 err = ec_read(0x78, &result);
561 if (err)
562 return AE_ERROR;
563 *value = result & 0x1;
564 return AE_OK;
565 default:
566 err = ec_read(0xA, &result);
567 if (err)
568 return AE_ERROR;
569 *value = (result >> 2) & 0x1;
570 return AE_OK;
571 }
572 break;
573 case ACER_CAP_BLUETOOTH:
574 switch (quirks->bluetooth) {
575 default:
576 err = ec_read(0xA, &result);
577 if (err)
578 return AE_ERROR;
579 *value = (result >> 4) & 0x1;
580 return AE_OK;
581 }
582 break;
583 case ACER_CAP_BRIGHTNESS:
584 switch (quirks->brightness) {
585 default:
586 err = ec_read(0x83, &result);
587 if (err)
588 return AE_ERROR;
589 *value = result;
590 return AE_OK;
591 }
592 break;
593 default:
594 return AE_ERROR;
595 }
596 return AE_OK;
597 }
598
599 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
600 {
601 struct wmab_args args;
602
603 args.eax = ACER_AMW0_WRITE;
604 args.ebx = value ? (1<<8) : 0;
605 args.ecx = args.edx = 0;
606
607 switch (cap) {
608 case ACER_CAP_MAILLED:
609 if (value > 1)
610 return AE_BAD_PARAMETER;
611 args.ebx |= ACER_AMW0_MAILLED_MASK;
612 break;
613 case ACER_CAP_WIRELESS:
614 if (value > 1)
615 return AE_BAD_PARAMETER;
616 args.ebx |= ACER_AMW0_WIRELESS_MASK;
617 break;
618 case ACER_CAP_BLUETOOTH:
619 if (value > 1)
620 return AE_BAD_PARAMETER;
621 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
622 break;
623 case ACER_CAP_BRIGHTNESS:
624 if (value > max_brightness)
625 return AE_BAD_PARAMETER;
626 switch (quirks->brightness) {
627 default:
628 return ec_write(0x83, value);
629 break;
630 }
631 default:
632 return AE_ERROR;
633 }
634
635 /* Actually do the set */
636 return wmab_execute(&args, NULL);
637 }
638
639 static acpi_status AMW0_find_mailled(void)
640 {
641 struct wmab_args args;
642 struct wmab_ret ret;
643 acpi_status status = AE_OK;
644 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
645 union acpi_object *obj;
646
647 args.eax = 0x86;
648 args.ebx = args.ecx = args.edx = 0;
649
650 status = wmab_execute(&args, &out);
651 if (ACPI_FAILURE(status))
652 return status;
653
654 obj = (union acpi_object *) out.pointer;
655 if (obj && obj->type == ACPI_TYPE_BUFFER &&
656 obj->buffer.length == sizeof(struct wmab_ret)) {
657 ret = *((struct wmab_ret *) obj->buffer.pointer);
658 } else {
659 kfree(out.pointer);
660 return AE_ERROR;
661 }
662
663 if (ret.eex & 0x1)
664 interface->capability |= ACER_CAP_MAILLED;
665
666 kfree(out.pointer);
667
668 return AE_OK;
669 }
670
671 static acpi_status AMW0_set_capabilities(void)
672 {
673 struct wmab_args args;
674 struct wmab_ret ret;
675 acpi_status status;
676 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
677 union acpi_object *obj;
678
679 /*
680 * On laptops with this strange GUID (non Acer), normal probing doesn't
681 * work.
682 */
683 if (wmi_has_guid(AMW0_GUID2)) {
684 interface->capability |= ACER_CAP_WIRELESS;
685 return AE_OK;
686 }
687
688 args.eax = ACER_AMW0_WRITE;
689 args.ecx = args.edx = 0;
690
691 args.ebx = 0xa2 << 8;
692 args.ebx |= ACER_AMW0_WIRELESS_MASK;
693
694 status = wmab_execute(&args, &out);
695 if (ACPI_FAILURE(status))
696 return status;
697
698 obj = out.pointer;
699 if (obj && obj->type == ACPI_TYPE_BUFFER &&
700 obj->buffer.length == sizeof(struct wmab_ret)) {
701 ret = *((struct wmab_ret *) obj->buffer.pointer);
702 } else {
703 status = AE_ERROR;
704 goto out;
705 }
706
707 if (ret.eax & 0x1)
708 interface->capability |= ACER_CAP_WIRELESS;
709
710 args.ebx = 2 << 8;
711 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
712
713 /*
714 * It's ok to use existing buffer for next wmab_execute call.
715 * But we need to kfree(out.pointer) if next wmab_execute fail.
716 */
717 status = wmab_execute(&args, &out);
718 if (ACPI_FAILURE(status))
719 goto out;
720
721 obj = (union acpi_object *) out.pointer;
722 if (obj && obj->type == ACPI_TYPE_BUFFER
723 && obj->buffer.length == sizeof(struct wmab_ret)) {
724 ret = *((struct wmab_ret *) obj->buffer.pointer);
725 } else {
726 status = AE_ERROR;
727 goto out;
728 }
729
730 if (ret.eax & 0x1)
731 interface->capability |= ACER_CAP_BLUETOOTH;
732
733 /*
734 * This appears to be safe to enable, since all Wistron based laptops
735 * appear to use the same EC register for brightness, even if they
736 * differ for wireless, etc
737 */
738 if (quirks->brightness >= 0)
739 interface->capability |= ACER_CAP_BRIGHTNESS;
740
741 status = AE_OK;
742 out:
743 kfree(out.pointer);
744 return status;
745 }
746
747 static struct wmi_interface AMW0_interface = {
748 .type = ACER_AMW0,
749 };
750
751 static struct wmi_interface AMW0_V2_interface = {
752 .type = ACER_AMW0_V2,
753 };
754
755 /*
756 * New interface (The WMID interface)
757 */
758 static acpi_status
759 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
760 {
761 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
762 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
763 union acpi_object *obj;
764 u32 tmp;
765 acpi_status status;
766
767 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
768
769 if (ACPI_FAILURE(status))
770 return status;
771
772 obj = (union acpi_object *) result.pointer;
773 if (obj && obj->type == ACPI_TYPE_BUFFER &&
774 (obj->buffer.length == sizeof(u32) ||
775 obj->buffer.length == sizeof(u64))) {
776 tmp = *((u32 *) obj->buffer.pointer);
777 } else if (obj->type == ACPI_TYPE_INTEGER) {
778 tmp = (u32) obj->integer.value;
779 } else {
780 tmp = 0;
781 }
782
783 if (out)
784 *out = tmp;
785
786 kfree(result.pointer);
787
788 return status;
789 }
790
791 static acpi_status WMID_get_u32(u32 *value, u32 cap,
792 struct wmi_interface *iface)
793 {
794 acpi_status status;
795 u8 tmp;
796 u32 result, method_id = 0;
797
798 switch (cap) {
799 case ACER_CAP_WIRELESS:
800 method_id = ACER_WMID_GET_WIRELESS_METHODID;
801 break;
802 case ACER_CAP_BLUETOOTH:
803 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
804 break;
805 case ACER_CAP_BRIGHTNESS:
806 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
807 break;
808 case ACER_CAP_THREEG:
809 method_id = ACER_WMID_GET_THREEG_METHODID;
810 break;
811 case ACER_CAP_MAILLED:
812 if (quirks->mailled == 1) {
813 ec_read(0x9f, &tmp);
814 *value = tmp & 0x1;
815 return 0;
816 }
817 default:
818 return AE_ERROR;
819 }
820 status = WMI_execute_u32(method_id, 0, &result);
821
822 if (ACPI_SUCCESS(status))
823 *value = (u8)result;
824
825 return status;
826 }
827
828 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
829 {
830 u32 method_id = 0;
831 char param;
832
833 switch (cap) {
834 case ACER_CAP_BRIGHTNESS:
835 if (value > max_brightness)
836 return AE_BAD_PARAMETER;
837 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
838 break;
839 case ACER_CAP_WIRELESS:
840 if (value > 1)
841 return AE_BAD_PARAMETER;
842 method_id = ACER_WMID_SET_WIRELESS_METHODID;
843 break;
844 case ACER_CAP_BLUETOOTH:
845 if (value > 1)
846 return AE_BAD_PARAMETER;
847 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
848 break;
849 case ACER_CAP_THREEG:
850 if (value > 1)
851 return AE_BAD_PARAMETER;
852 method_id = ACER_WMID_SET_THREEG_METHODID;
853 break;
854 case ACER_CAP_MAILLED:
855 if (value > 1)
856 return AE_BAD_PARAMETER;
857 if (quirks->mailled == 1) {
858 param = value ? 0x92 : 0x93;
859 i8042_lock_chip();
860 i8042_command(&param, 0x1059);
861 i8042_unlock_chip();
862 return 0;
863 }
864 break;
865 default:
866 return AE_ERROR;
867 }
868 return WMI_execute_u32(method_id, (u32)value, NULL);
869 }
870
871 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
872 {
873 struct hotkey_function_type_aa *type_aa;
874
875 /* We are looking for OEM-specific Type AAh */
876 if (header->type != 0xAA)
877 return;
878
879 has_type_aa = true;
880 type_aa = (struct hotkey_function_type_aa *) header;
881
882 pr_info("Function bitmap for Communication Button: 0x%x\n",
883 type_aa->commun_func_bitmap);
884
885 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
886 interface->capability |= ACER_CAP_WIRELESS;
887 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
888 interface->capability |= ACER_CAP_THREEG;
889 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
890 interface->capability |= ACER_CAP_BLUETOOTH;
891 }
892
893 static acpi_status WMID_set_capabilities(void)
894 {
895 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
896 union acpi_object *obj;
897 acpi_status status;
898 u32 devices;
899
900 status = wmi_query_block(WMID_GUID2, 1, &out);
901 if (ACPI_FAILURE(status))
902 return status;
903
904 obj = (union acpi_object *) out.pointer;
905 if (obj && obj->type == ACPI_TYPE_BUFFER &&
906 (obj->buffer.length == sizeof(u32) ||
907 obj->buffer.length == sizeof(u64))) {
908 devices = *((u32 *) obj->buffer.pointer);
909 } else if (obj->type == ACPI_TYPE_INTEGER) {
910 devices = (u32) obj->integer.value;
911 } else {
912 kfree(out.pointer);
913 return AE_ERROR;
914 }
915
916 dmi_walk(type_aa_dmi_decode, NULL);
917 if (!has_type_aa) {
918 interface->capability |= ACER_CAP_WIRELESS;
919 if (devices & 0x40)
920 interface->capability |= ACER_CAP_THREEG;
921 if (devices & 0x10)
922 interface->capability |= ACER_CAP_BLUETOOTH;
923 }
924
925 /* WMID always provides brightness methods */
926 interface->capability |= ACER_CAP_BRIGHTNESS;
927
928 if (!(devices & 0x20))
929 max_brightness = 0x9;
930
931 kfree(out.pointer);
932 return status;
933 }
934
935 static struct wmi_interface wmid_interface = {
936 .type = ACER_WMID,
937 };
938
939 /*
940 * Generic Device (interface-independent)
941 */
942
943 static acpi_status get_u32(u32 *value, u32 cap)
944 {
945 acpi_status status = AE_ERROR;
946
947 switch (interface->type) {
948 case ACER_AMW0:
949 status = AMW0_get_u32(value, cap, interface);
950 break;
951 case ACER_AMW0_V2:
952 if (cap == ACER_CAP_MAILLED) {
953 status = AMW0_get_u32(value, cap, interface);
954 break;
955 }
956 case ACER_WMID:
957 status = WMID_get_u32(value, cap, interface);
958 break;
959 }
960
961 return status;
962 }
963
964 static acpi_status set_u32(u32 value, u32 cap)
965 {
966 acpi_status status;
967
968 if (interface->capability & cap) {
969 switch (interface->type) {
970 case ACER_AMW0:
971 return AMW0_set_u32(value, cap, interface);
972 case ACER_AMW0_V2:
973 if (cap == ACER_CAP_MAILLED)
974 return AMW0_set_u32(value, cap, interface);
975
976 /*
977 * On some models, some WMID methods don't toggle
978 * properly. For those cases, we want to run the AMW0
979 * method afterwards to be certain we've really toggled
980 * the device state.
981 */
982 if (cap == ACER_CAP_WIRELESS ||
983 cap == ACER_CAP_BLUETOOTH) {
984 status = WMID_set_u32(value, cap, interface);
985 if (ACPI_FAILURE(status))
986 return status;
987
988 return AMW0_set_u32(value, cap, interface);
989 }
990 case ACER_WMID:
991 return WMID_set_u32(value, cap, interface);
992 default:
993 return AE_BAD_PARAMETER;
994 }
995 }
996 return AE_BAD_PARAMETER;
997 }
998
999 static void __init acer_commandline_init(void)
1000 {
1001 /*
1002 * These will all fail silently if the value given is invalid, or the
1003 * capability isn't available on the given interface
1004 */
1005 if (mailled >= 0)
1006 set_u32(mailled, ACER_CAP_MAILLED);
1007 if (!has_type_aa && threeg >= 0)
1008 set_u32(threeg, ACER_CAP_THREEG);
1009 if (brightness >= 0)
1010 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1011 }
1012
1013 /*
1014 * LED device (Mail LED only, no other LEDs known yet)
1015 */
1016 static void mail_led_set(struct led_classdev *led_cdev,
1017 enum led_brightness value)
1018 {
1019 set_u32(value, ACER_CAP_MAILLED);
1020 }
1021
1022 static struct led_classdev mail_led = {
1023 .name = "acer-wmi::mail",
1024 .brightness_set = mail_led_set,
1025 };
1026
1027 static int __devinit acer_led_init(struct device *dev)
1028 {
1029 return led_classdev_register(dev, &mail_led);
1030 }
1031
1032 static void acer_led_exit(void)
1033 {
1034 set_u32(LED_OFF, ACER_CAP_MAILLED);
1035 led_classdev_unregister(&mail_led);
1036 }
1037
1038 /*
1039 * Backlight device
1040 */
1041 static struct backlight_device *acer_backlight_device;
1042
1043 static int read_brightness(struct backlight_device *bd)
1044 {
1045 u32 value;
1046 get_u32(&value, ACER_CAP_BRIGHTNESS);
1047 return value;
1048 }
1049
1050 static int update_bl_status(struct backlight_device *bd)
1051 {
1052 int intensity = bd->props.brightness;
1053
1054 if (bd->props.power != FB_BLANK_UNBLANK)
1055 intensity = 0;
1056 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1057 intensity = 0;
1058
1059 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1060
1061 return 0;
1062 }
1063
1064 static const struct backlight_ops acer_bl_ops = {
1065 .get_brightness = read_brightness,
1066 .update_status = update_bl_status,
1067 };
1068
1069 static int __devinit acer_backlight_init(struct device *dev)
1070 {
1071 struct backlight_properties props;
1072 struct backlight_device *bd;
1073
1074 memset(&props, 0, sizeof(struct backlight_properties));
1075 props.type = BACKLIGHT_PLATFORM;
1076 props.max_brightness = max_brightness;
1077 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1078 &props);
1079 if (IS_ERR(bd)) {
1080 pr_err("Could not register Acer backlight device\n");
1081 acer_backlight_device = NULL;
1082 return PTR_ERR(bd);
1083 }
1084
1085 acer_backlight_device = bd;
1086
1087 bd->props.power = FB_BLANK_UNBLANK;
1088 bd->props.brightness = read_brightness(bd);
1089 backlight_update_status(bd);
1090 return 0;
1091 }
1092
1093 static void acer_backlight_exit(void)
1094 {
1095 backlight_device_unregister(acer_backlight_device);
1096 }
1097
1098 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1099 {
1100 struct wmid3_gds_return_value return_value;
1101 acpi_status status;
1102 union acpi_object *obj;
1103 struct wmid3_gds_input_param params = {
1104 .function_num = 0x1,
1105 .hotkey_number = 0x01,
1106 .devices = device,
1107 };
1108 struct acpi_buffer input = {
1109 sizeof(struct wmid3_gds_input_param),
1110 &params
1111 };
1112 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1113
1114 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1115 if (ACPI_FAILURE(status))
1116 return status;
1117
1118 obj = output.pointer;
1119
1120 if (!obj)
1121 return AE_ERROR;
1122 else if (obj->type != ACPI_TYPE_BUFFER) {
1123 kfree(obj);
1124 return AE_ERROR;
1125 }
1126 if (obj->buffer.length != 8) {
1127 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1128 kfree(obj);
1129 return AE_ERROR;
1130 }
1131
1132 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1133 kfree(obj);
1134
1135 if (return_value.error_code || return_value.ec_return_value)
1136 pr_warn("Get Device Status failed: 0x%x - 0x%x\n",
1137 return_value.error_code,
1138 return_value.ec_return_value);
1139 else
1140 *value = !!(return_value.devices & device);
1141
1142 return status;
1143 }
1144
1145 static acpi_status get_device_status(u32 *value, u32 cap)
1146 {
1147 if (wmi_has_guid(WMID_GUID3)) {
1148 u16 device;
1149
1150 switch (cap) {
1151 case ACER_CAP_WIRELESS:
1152 device = ACER_WMID3_GDS_WIRELESS;
1153 break;
1154 case ACER_CAP_BLUETOOTH:
1155 device = ACER_WMID3_GDS_BLUETOOTH;
1156 break;
1157 case ACER_CAP_THREEG:
1158 device = ACER_WMID3_GDS_THREEG;
1159 break;
1160 default:
1161 return AE_ERROR;
1162 }
1163 return wmid3_get_device_status(value, device);
1164
1165 } else {
1166 return get_u32(value, cap);
1167 }
1168 }
1169
1170 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1171 {
1172 struct wmid3_gds_return_value return_value;
1173 acpi_status status;
1174 union acpi_object *obj;
1175 u16 devices;
1176 struct wmid3_gds_input_param params = {
1177 .function_num = 0x1,
1178 .hotkey_number = 0x01,
1179 .devices = ACER_WMID3_GDS_WIRELESS |
1180 ACER_WMID3_GDS_THREEG |
1181 ACER_WMID3_GDS_WIMAX |
1182 ACER_WMID3_GDS_BLUETOOTH,
1183 };
1184 struct acpi_buffer input = {
1185 sizeof(struct wmid3_gds_input_param),
1186 &params
1187 };
1188 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1189 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1190
1191 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1192 if (ACPI_FAILURE(status))
1193 return status;
1194
1195 obj = output.pointer;
1196
1197 if (!obj)
1198 return AE_ERROR;
1199 else if (obj->type != ACPI_TYPE_BUFFER) {
1200 kfree(obj);
1201 return AE_ERROR;
1202 }
1203 if (obj->buffer.length != 8) {
1204 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1205 kfree(obj);
1206 return AE_ERROR;
1207 }
1208
1209 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1210 kfree(obj);
1211
1212 if (return_value.error_code || return_value.ec_return_value) {
1213 pr_warning("Get Current Device Status failed: "
1214 "0x%x - 0x%x\n", return_value.error_code,
1215 return_value.ec_return_value);
1216 return status;
1217 }
1218
1219 devices = return_value.devices;
1220 params.function_num = 0x2;
1221 params.hotkey_number = 0x01;
1222 params.devices = (value) ? (devices | device) : (devices & ~device);
1223
1224 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
1225 if (ACPI_FAILURE(status))
1226 return status;
1227
1228 obj = output2.pointer;
1229
1230 if (!obj)
1231 return AE_ERROR;
1232 else if (obj->type != ACPI_TYPE_BUFFER) {
1233 kfree(obj);
1234 return AE_ERROR;
1235 }
1236 if (obj->buffer.length != 4) {
1237 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1238 kfree(obj);
1239 return AE_ERROR;
1240 }
1241
1242 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1243 kfree(obj);
1244
1245 if (return_value.error_code || return_value.ec_return_value)
1246 pr_warning("Set Device Status failed: "
1247 "0x%x - 0x%x\n", return_value.error_code,
1248 return_value.ec_return_value);
1249
1250 return status;
1251 }
1252
1253 static acpi_status set_device_status(u32 value, u32 cap)
1254 {
1255 if (wmi_has_guid(WMID_GUID3)) {
1256 u16 device;
1257
1258 switch (cap) {
1259 case ACER_CAP_WIRELESS:
1260 device = ACER_WMID3_GDS_WIRELESS;
1261 break;
1262 case ACER_CAP_BLUETOOTH:
1263 device = ACER_WMID3_GDS_BLUETOOTH;
1264 break;
1265 case ACER_CAP_THREEG:
1266 device = ACER_WMID3_GDS_THREEG;
1267 break;
1268 default:
1269 return AE_ERROR;
1270 }
1271 return wmid3_set_device_status(value, device);
1272
1273 } else {
1274 return set_u32(value, cap);
1275 }
1276 }
1277
1278 /*
1279 * Rfkill devices
1280 */
1281 static void acer_rfkill_update(struct work_struct *ignored);
1282 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1283 static void acer_rfkill_update(struct work_struct *ignored)
1284 {
1285 u32 state;
1286 acpi_status status;
1287
1288 status = get_u32(&state, ACER_CAP_WIRELESS);
1289 if (ACPI_SUCCESS(status)) {
1290 if (quirks->wireless == 3) {
1291 rfkill_set_hw_state(wireless_rfkill, !state);
1292 } else {
1293 rfkill_set_sw_state(wireless_rfkill, !state);
1294 }
1295 }
1296
1297 if (has_cap(ACER_CAP_BLUETOOTH)) {
1298 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1299 if (ACPI_SUCCESS(status))
1300 rfkill_set_sw_state(bluetooth_rfkill, !state);
1301 }
1302
1303 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1304 status = wmid3_get_device_status(&state,
1305 ACER_WMID3_GDS_THREEG);
1306 if (ACPI_SUCCESS(status))
1307 rfkill_set_sw_state(threeg_rfkill, !state);
1308 }
1309
1310 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1311 }
1312
1313 static int acer_rfkill_set(void *data, bool blocked)
1314 {
1315 acpi_status status;
1316 u32 cap = (unsigned long)data;
1317
1318 if (rfkill_inited) {
1319 status = set_device_status(!blocked, cap);
1320 if (ACPI_FAILURE(status))
1321 return -ENODEV;
1322 }
1323
1324 return 0;
1325 }
1326
1327 static const struct rfkill_ops acer_rfkill_ops = {
1328 .set_block = acer_rfkill_set,
1329 };
1330
1331 static struct rfkill *acer_rfkill_register(struct device *dev,
1332 enum rfkill_type type,
1333 char *name, u32 cap)
1334 {
1335 int err;
1336 struct rfkill *rfkill_dev;
1337 u32 state;
1338 acpi_status status;
1339
1340 rfkill_dev = rfkill_alloc(name, dev, type,
1341 &acer_rfkill_ops,
1342 (void *)(unsigned long)cap);
1343 if (!rfkill_dev)
1344 return ERR_PTR(-ENOMEM);
1345
1346 status = get_device_status(&state, cap);
1347
1348 err = rfkill_register(rfkill_dev);
1349 if (err) {
1350 rfkill_destroy(rfkill_dev);
1351 return ERR_PTR(err);
1352 }
1353
1354 if (ACPI_SUCCESS(status))
1355 rfkill_set_sw_state(rfkill_dev, !state);
1356
1357 return rfkill_dev;
1358 }
1359
1360 static int acer_rfkill_init(struct device *dev)
1361 {
1362 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1363 "acer-wireless", ACER_CAP_WIRELESS);
1364 if (IS_ERR(wireless_rfkill))
1365 return PTR_ERR(wireless_rfkill);
1366
1367 if (has_cap(ACER_CAP_BLUETOOTH)) {
1368 bluetooth_rfkill = acer_rfkill_register(dev,
1369 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1370 ACER_CAP_BLUETOOTH);
1371 if (IS_ERR(bluetooth_rfkill)) {
1372 rfkill_unregister(wireless_rfkill);
1373 rfkill_destroy(wireless_rfkill);
1374 return PTR_ERR(bluetooth_rfkill);
1375 }
1376 }
1377
1378 if (has_cap(ACER_CAP_THREEG)) {
1379 threeg_rfkill = acer_rfkill_register(dev,
1380 RFKILL_TYPE_WWAN, "acer-threeg",
1381 ACER_CAP_THREEG);
1382 if (IS_ERR(threeg_rfkill)) {
1383 rfkill_unregister(wireless_rfkill);
1384 rfkill_destroy(wireless_rfkill);
1385 rfkill_unregister(bluetooth_rfkill);
1386 rfkill_destroy(bluetooth_rfkill);
1387 return PTR_ERR(threeg_rfkill);
1388 }
1389 }
1390
1391 rfkill_inited = true;
1392
1393 if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1394 schedule_delayed_work(&acer_rfkill_work,
1395 round_jiffies_relative(HZ));
1396
1397 return 0;
1398 }
1399
1400 static void acer_rfkill_exit(void)
1401 {
1402 if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1403 cancel_delayed_work_sync(&acer_rfkill_work);
1404
1405 rfkill_unregister(wireless_rfkill);
1406 rfkill_destroy(wireless_rfkill);
1407
1408 if (has_cap(ACER_CAP_BLUETOOTH)) {
1409 rfkill_unregister(bluetooth_rfkill);
1410 rfkill_destroy(bluetooth_rfkill);
1411 }
1412
1413 if (has_cap(ACER_CAP_THREEG)) {
1414 rfkill_unregister(threeg_rfkill);
1415 rfkill_destroy(threeg_rfkill);
1416 }
1417 return;
1418 }
1419
1420 /*
1421 * sysfs interface
1422 */
1423 static ssize_t show_bool_threeg(struct device *dev,
1424 struct device_attribute *attr, char *buf)
1425 {
1426 u32 result; \
1427 acpi_status status;
1428
1429 pr_info("This threeg sysfs will be removed in 2012"
1430 " - used by: %s\n", current->comm);
1431 if (wmi_has_guid(WMID_GUID3))
1432 status = wmid3_get_device_status(&result,
1433 ACER_WMID3_GDS_THREEG);
1434 else
1435 status = get_u32(&result, ACER_CAP_THREEG);
1436 if (ACPI_SUCCESS(status))
1437 return sprintf(buf, "%u\n", result);
1438 return sprintf(buf, "Read error\n");
1439 }
1440
1441 static ssize_t set_bool_threeg(struct device *dev,
1442 struct device_attribute *attr, const char *buf, size_t count)
1443 {
1444 u32 tmp = simple_strtoul(buf, NULL, 10);
1445 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1446 pr_info("This threeg sysfs will be removed in 2012"
1447 " - used by: %s\n", current->comm);
1448 if (ACPI_FAILURE(status))
1449 return -EINVAL;
1450 return count;
1451 }
1452 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1453 set_bool_threeg);
1454
1455 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1456 char *buf)
1457 {
1458 pr_info("This interface sysfs will be removed in 2012"
1459 " - used by: %s\n", current->comm);
1460 switch (interface->type) {
1461 case ACER_AMW0:
1462 return sprintf(buf, "AMW0\n");
1463 case ACER_AMW0_V2:
1464 return sprintf(buf, "AMW0 v2\n");
1465 case ACER_WMID:
1466 return sprintf(buf, "WMID\n");
1467 default:
1468 return sprintf(buf, "Error!\n");
1469 }
1470 }
1471
1472 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1473
1474 static void acer_wmi_notify(u32 value, void *context)
1475 {
1476 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1477 union acpi_object *obj;
1478 struct event_return_value return_value;
1479 acpi_status status;
1480 u16 device_state;
1481 const struct key_entry *key;
1482
1483 status = wmi_get_event_data(value, &response);
1484 if (status != AE_OK) {
1485 pr_warn("bad event status 0x%x\n", status);
1486 return;
1487 }
1488
1489 obj = (union acpi_object *)response.pointer;
1490
1491 if (!obj)
1492 return;
1493 if (obj->type != ACPI_TYPE_BUFFER) {
1494 pr_warn("Unknown response received %d\n", obj->type);
1495 kfree(obj);
1496 return;
1497 }
1498 if (obj->buffer.length != 8) {
1499 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1500 kfree(obj);
1501 return;
1502 }
1503
1504 return_value = *((struct event_return_value *)obj->buffer.pointer);
1505 kfree(obj);
1506
1507 switch (return_value.function) {
1508 case WMID_HOTKEY_EVENT:
1509 device_state = return_value.device_state;
1510 pr_debug("device state: 0x%x\n", device_state);
1511
1512 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1513 return_value.key_num);
1514 if (!key) {
1515 pr_warn("Unknown key number - 0x%x\n",
1516 return_value.key_num);
1517 } else {
1518 switch (key->keycode) {
1519 case KEY_WLAN:
1520 case KEY_BLUETOOTH:
1521 if (has_cap(ACER_CAP_WIRELESS))
1522 rfkill_set_sw_state(wireless_rfkill,
1523 !(device_state & ACER_WMID3_GDS_WIRELESS));
1524 if (has_cap(ACER_CAP_THREEG))
1525 rfkill_set_sw_state(threeg_rfkill,
1526 !(device_state & ACER_WMID3_GDS_THREEG));
1527 if (has_cap(ACER_CAP_BLUETOOTH))
1528 rfkill_set_sw_state(bluetooth_rfkill,
1529 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1530 break;
1531 }
1532 sparse_keymap_report_entry(acer_wmi_input_dev, key,
1533 1, true);
1534 }
1535 break;
1536 default:
1537 pr_warn("Unknown function number - %d - %d\n",
1538 return_value.function, return_value.key_num);
1539 break;
1540 }
1541 }
1542
1543 static acpi_status
1544 wmid3_set_lm_mode(struct lm_input_params *params,
1545 struct lm_return_value *return_value)
1546 {
1547 acpi_status status;
1548 union acpi_object *obj;
1549
1550 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1551 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1552
1553 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1554 if (ACPI_FAILURE(status))
1555 return status;
1556
1557 obj = output.pointer;
1558
1559 if (!obj)
1560 return AE_ERROR;
1561 else if (obj->type != ACPI_TYPE_BUFFER) {
1562 kfree(obj);
1563 return AE_ERROR;
1564 }
1565 if (obj->buffer.length != 4) {
1566 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1567 kfree(obj);
1568 return AE_ERROR;
1569 }
1570
1571 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1572 kfree(obj);
1573
1574 return status;
1575 }
1576
1577 static int acer_wmi_enable_ec_raw(void)
1578 {
1579 struct lm_return_value return_value;
1580 acpi_status status;
1581 struct lm_input_params params = {
1582 .function_num = 0x1,
1583 .commun_devices = 0xFFFF,
1584 .devices = 0xFFFF,
1585 .lm_status = 0x00, /* Launch Manager Deactive */
1586 };
1587
1588 status = wmid3_set_lm_mode(&params, &return_value);
1589
1590 if (return_value.error_code || return_value.ec_return_value)
1591 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1592 return_value.error_code,
1593 return_value.ec_return_value);
1594 else
1595 pr_info("Enabled EC raw mode\n");
1596
1597 return status;
1598 }
1599
1600 static int acer_wmi_enable_lm(void)
1601 {
1602 struct lm_return_value return_value;
1603 acpi_status status;
1604 struct lm_input_params params = {
1605 .function_num = 0x1,
1606 .commun_devices = 0xFFFF,
1607 .devices = 0xFFFF,
1608 .lm_status = 0x01, /* Launch Manager Active */
1609 };
1610
1611 status = wmid3_set_lm_mode(&params, &return_value);
1612
1613 if (return_value.error_code || return_value.ec_return_value)
1614 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1615 return_value.error_code,
1616 return_value.ec_return_value);
1617
1618 return status;
1619 }
1620
1621 static int __init acer_wmi_input_setup(void)
1622 {
1623 acpi_status status;
1624 int err;
1625
1626 acer_wmi_input_dev = input_allocate_device();
1627 if (!acer_wmi_input_dev)
1628 return -ENOMEM;
1629
1630 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1631 acer_wmi_input_dev->phys = "wmi/input0";
1632 acer_wmi_input_dev->id.bustype = BUS_HOST;
1633
1634 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1635 if (err)
1636 goto err_free_dev;
1637
1638 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1639 acer_wmi_notify, NULL);
1640 if (ACPI_FAILURE(status)) {
1641 err = -EIO;
1642 goto err_free_keymap;
1643 }
1644
1645 err = input_register_device(acer_wmi_input_dev);
1646 if (err)
1647 goto err_uninstall_notifier;
1648
1649 return 0;
1650
1651 err_uninstall_notifier:
1652 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1653 err_free_keymap:
1654 sparse_keymap_free(acer_wmi_input_dev);
1655 err_free_dev:
1656 input_free_device(acer_wmi_input_dev);
1657 return err;
1658 }
1659
1660 static void acer_wmi_input_destroy(void)
1661 {
1662 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1663 sparse_keymap_free(acer_wmi_input_dev);
1664 input_unregister_device(acer_wmi_input_dev);
1665 }
1666
1667 /*
1668 * debugfs functions
1669 */
1670 static u32 get_wmid_devices(void)
1671 {
1672 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1673 union acpi_object *obj;
1674 acpi_status status;
1675 u32 devices = 0;
1676
1677 status = wmi_query_block(WMID_GUID2, 1, &out);
1678 if (ACPI_FAILURE(status))
1679 return 0;
1680
1681 obj = (union acpi_object *) out.pointer;
1682 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1683 (obj->buffer.length == sizeof(u32) ||
1684 obj->buffer.length == sizeof(u64))) {
1685 devices = *((u32 *) obj->buffer.pointer);
1686 } else if (obj->type == ACPI_TYPE_INTEGER) {
1687 devices = (u32) obj->integer.value;
1688 }
1689
1690 kfree(out.pointer);
1691 return devices;
1692 }
1693
1694 /*
1695 * Platform device
1696 */
1697 static int __devinit acer_platform_probe(struct platform_device *device)
1698 {
1699 int err;
1700
1701 if (has_cap(ACER_CAP_MAILLED)) {
1702 err = acer_led_init(&device->dev);
1703 if (err)
1704 goto error_mailled;
1705 }
1706
1707 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1708 err = acer_backlight_init(&device->dev);
1709 if (err)
1710 goto error_brightness;
1711 }
1712
1713 err = acer_rfkill_init(&device->dev);
1714 if (err)
1715 goto error_rfkill;
1716
1717 return err;
1718
1719 error_rfkill:
1720 if (has_cap(ACER_CAP_BRIGHTNESS))
1721 acer_backlight_exit();
1722 error_brightness:
1723 if (has_cap(ACER_CAP_MAILLED))
1724 acer_led_exit();
1725 error_mailled:
1726 return err;
1727 }
1728
1729 static int acer_platform_remove(struct platform_device *device)
1730 {
1731 if (has_cap(ACER_CAP_MAILLED))
1732 acer_led_exit();
1733 if (has_cap(ACER_CAP_BRIGHTNESS))
1734 acer_backlight_exit();
1735
1736 acer_rfkill_exit();
1737 return 0;
1738 }
1739
1740 static int acer_platform_suspend(struct platform_device *dev,
1741 pm_message_t state)
1742 {
1743 u32 value;
1744 struct acer_data *data = &interface->data;
1745
1746 if (!data)
1747 return -ENOMEM;
1748
1749 if (has_cap(ACER_CAP_MAILLED)) {
1750 get_u32(&value, ACER_CAP_MAILLED);
1751 set_u32(LED_OFF, ACER_CAP_MAILLED);
1752 data->mailled = value;
1753 }
1754
1755 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1756 get_u32(&value, ACER_CAP_BRIGHTNESS);
1757 data->brightness = value;
1758 }
1759
1760 return 0;
1761 }
1762
1763 static int acer_platform_resume(struct platform_device *device)
1764 {
1765 struct acer_data *data = &interface->data;
1766
1767 if (!data)
1768 return -ENOMEM;
1769
1770 if (has_cap(ACER_CAP_MAILLED))
1771 set_u32(data->mailled, ACER_CAP_MAILLED);
1772
1773 if (has_cap(ACER_CAP_BRIGHTNESS))
1774 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1775
1776 return 0;
1777 }
1778
1779 static void acer_platform_shutdown(struct platform_device *device)
1780 {
1781 struct acer_data *data = &interface->data;
1782
1783 if (!data)
1784 return;
1785
1786 if (has_cap(ACER_CAP_MAILLED))
1787 set_u32(LED_OFF, ACER_CAP_MAILLED);
1788 }
1789
1790 static struct platform_driver acer_platform_driver = {
1791 .driver = {
1792 .name = "acer-wmi",
1793 .owner = THIS_MODULE,
1794 },
1795 .probe = acer_platform_probe,
1796 .remove = acer_platform_remove,
1797 .suspend = acer_platform_suspend,
1798 .resume = acer_platform_resume,
1799 .shutdown = acer_platform_shutdown,
1800 };
1801
1802 static struct platform_device *acer_platform_device;
1803
1804 static int remove_sysfs(struct platform_device *device)
1805 {
1806 if (has_cap(ACER_CAP_THREEG))
1807 device_remove_file(&device->dev, &dev_attr_threeg);
1808
1809 device_remove_file(&device->dev, &dev_attr_interface);
1810
1811 return 0;
1812 }
1813
1814 static int create_sysfs(void)
1815 {
1816 int retval = -ENOMEM;
1817
1818 if (has_cap(ACER_CAP_THREEG)) {
1819 retval = device_create_file(&acer_platform_device->dev,
1820 &dev_attr_threeg);
1821 if (retval)
1822 goto error_sysfs;
1823 }
1824
1825 retval = device_create_file(&acer_platform_device->dev,
1826 &dev_attr_interface);
1827 if (retval)
1828 goto error_sysfs;
1829
1830 return 0;
1831
1832 error_sysfs:
1833 remove_sysfs(acer_platform_device);
1834 return retval;
1835 }
1836
1837 static void remove_debugfs(void)
1838 {
1839 debugfs_remove(interface->debug.devices);
1840 debugfs_remove(interface->debug.root);
1841 }
1842
1843 static int create_debugfs(void)
1844 {
1845 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1846 if (!interface->debug.root) {
1847 pr_err("Failed to create debugfs directory");
1848 return -ENOMEM;
1849 }
1850
1851 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1852 interface->debug.root,
1853 &interface->debug.wmid_devices);
1854 if (!interface->debug.devices)
1855 goto error_debugfs;
1856
1857 return 0;
1858
1859 error_debugfs:
1860 remove_debugfs();
1861 return -ENOMEM;
1862 }
1863
1864 static int __init acer_wmi_init(void)
1865 {
1866 int err;
1867
1868 pr_info("Acer Laptop ACPI-WMI Extras\n");
1869
1870 if (dmi_check_system(acer_blacklist)) {
1871 pr_info("Blacklisted hardware detected - not loading\n");
1872 return -ENODEV;
1873 }
1874
1875 find_quirks();
1876
1877 /*
1878 * Detect which ACPI-WMI interface we're using.
1879 */
1880 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1881 interface = &AMW0_V2_interface;
1882
1883 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1884 interface = &wmid_interface;
1885
1886 if (wmi_has_guid(WMID_GUID2) && interface) {
1887 if (ACPI_FAILURE(WMID_set_capabilities())) {
1888 pr_err("Unable to detect available WMID devices\n");
1889 return -ENODEV;
1890 }
1891 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1892 pr_err("No WMID device detection method found\n");
1893 return -ENODEV;
1894 }
1895
1896 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1897 interface = &AMW0_interface;
1898
1899 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1900 pr_err("Unable to detect available AMW0 devices\n");
1901 return -ENODEV;
1902 }
1903 }
1904
1905 if (wmi_has_guid(AMW0_GUID1))
1906 AMW0_find_mailled();
1907
1908 if (!interface) {
1909 pr_err("No or unsupported WMI interface, unable to load\n");
1910 return -ENODEV;
1911 }
1912
1913 set_quirks();
1914
1915 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1916 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1917 pr_info("Brightness must be controlled by "
1918 "generic video driver\n");
1919 }
1920
1921 if (wmi_has_guid(WMID_GUID3)) {
1922 if (ec_raw_mode) {
1923 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1924 pr_err("Cannot enable EC raw mode\n");
1925 return -ENODEV;
1926 }
1927 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1928 pr_err("Cannot enable Launch Manager mode\n");
1929 return -ENODEV;
1930 }
1931 } else if (ec_raw_mode) {
1932 pr_info("No WMID EC raw mode enable method\n");
1933 }
1934
1935 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1936 err = acer_wmi_input_setup();
1937 if (err)
1938 return err;
1939 }
1940
1941 err = platform_driver_register(&acer_platform_driver);
1942 if (err) {
1943 pr_err("Unable to register platform driver.\n");
1944 goto error_platform_register;
1945 }
1946
1947 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1948 if (!acer_platform_device) {
1949 err = -ENOMEM;
1950 goto error_device_alloc;
1951 }
1952
1953 err = platform_device_add(acer_platform_device);
1954 if (err)
1955 goto error_device_add;
1956
1957 err = create_sysfs();
1958 if (err)
1959 goto error_create_sys;
1960
1961 if (wmi_has_guid(WMID_GUID2)) {
1962 interface->debug.wmid_devices = get_wmid_devices();
1963 err = create_debugfs();
1964 if (err)
1965 goto error_create_debugfs;
1966 }
1967
1968 /* Override any initial settings with values from the commandline */
1969 acer_commandline_init();
1970
1971 return 0;
1972
1973 error_create_debugfs:
1974 remove_sysfs(acer_platform_device);
1975 error_create_sys:
1976 platform_device_del(acer_platform_device);
1977 error_device_add:
1978 platform_device_put(acer_platform_device);
1979 error_device_alloc:
1980 platform_driver_unregister(&acer_platform_driver);
1981 error_platform_register:
1982 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1983 acer_wmi_input_destroy();
1984
1985 return err;
1986 }
1987
1988 static void __exit acer_wmi_exit(void)
1989 {
1990 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1991 acer_wmi_input_destroy();
1992
1993 remove_sysfs(acer_platform_device);
1994 remove_debugfs();
1995 platform_device_unregister(acer_platform_device);
1996 platform_driver_unregister(&acer_platform_driver);
1997
1998 pr_info("Acer Laptop WMI Extras unloaded\n");
1999 return;
2000 }
2001
2002 module_init(acer_wmi_init);
2003 module_exit(acer_wmi_exit);
linux-next