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[mirror_ubuntu-zesty-kernel.git] / drivers / platform / x86 / acer-wmi.c
1 /*
2 * Acer WMI Laptop Extras
3 *
4 * Copyright (C) 2007-2009 Carlos Corbacho <carlos@strangeworlds.co.uk>
5 *
6 * Based on acer_acpi:
7 * Copyright (C) 2005-2007 E.M. Smith
8 * Copyright (C) 2007-2008 Carlos Corbacho <cathectic@gmail.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25 #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, 0x12, {KEY_BLUETOOTH} }, /* BT */
103 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
104 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
105 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
106 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
107 {KE_IGNORE, 0x41, {KEY_MUTE} },
108 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
109 {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
110 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
111 {KE_IGNORE, 0x45, {KEY_STOP} },
112 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
113 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
114 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
115 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
116 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
117 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
118 {KE_IGNORE, 0x81, {KEY_SLEEP} },
119 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
120 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
121 {KE_END, 0}
122 };
123
124 static struct input_dev *acer_wmi_input_dev;
125
126 struct event_return_value {
127 u8 function;
128 u8 key_num;
129 u16 device_state;
130 u32 reserved;
131 } __attribute__((packed));
132
133 /*
134 * GUID3 Get Device Status device flags
135 */
136 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
137 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
138 #define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
139 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
140
141 struct lm_input_params {
142 u8 function_num; /* Function Number */
143 u16 commun_devices; /* Communication type devices default status */
144 u16 devices; /* Other type devices default status */
145 u8 lm_status; /* Launch Manager Status */
146 u16 reserved;
147 } __attribute__((packed));
148
149 struct lm_return_value {
150 u8 error_code; /* Error Code */
151 u8 ec_return_value; /* EC Return Value */
152 u16 reserved;
153 } __attribute__((packed));
154
155 struct wmid3_gds_input_param { /* Get Device Status input parameter */
156 u8 function_num; /* Function Number */
157 u8 hotkey_number; /* Hotkey Number */
158 u16 devices; /* Get Device */
159 } __attribute__((packed));
160
161 struct wmid3_gds_return_value { /* Get Device Status return value*/
162 u8 error_code; /* Error Code */
163 u8 ec_return_value; /* EC Return Value */
164 u16 devices; /* Current Device Status */
165 u32 reserved;
166 } __attribute__((packed));
167
168 struct hotkey_function_type_aa {
169 u8 type;
170 u8 length;
171 u16 handle;
172 u16 commun_func_bitmap;
173 } __attribute__((packed));
174
175 /*
176 * Interface capability flags
177 */
178 #define ACER_CAP_MAILLED (1<<0)
179 #define ACER_CAP_WIRELESS (1<<1)
180 #define ACER_CAP_BLUETOOTH (1<<2)
181 #define ACER_CAP_BRIGHTNESS (1<<3)
182 #define ACER_CAP_THREEG (1<<4)
183 #define ACER_CAP_ANY (0xFFFFFFFF)
184
185 /*
186 * Interface type flags
187 */
188 enum interface_flags {
189 ACER_AMW0,
190 ACER_AMW0_V2,
191 ACER_WMID,
192 };
193
194 #define ACER_DEFAULT_WIRELESS 0
195 #define ACER_DEFAULT_BLUETOOTH 0
196 #define ACER_DEFAULT_MAILLED 0
197 #define ACER_DEFAULT_THREEG 0
198
199 static int max_brightness = 0xF;
200
201 static int mailled = -1;
202 static int brightness = -1;
203 static int threeg = -1;
204 static int force_series;
205 static bool ec_raw_mode;
206 static bool has_type_aa;
207
208 module_param(mailled, int, 0444);
209 module_param(brightness, int, 0444);
210 module_param(threeg, int, 0444);
211 module_param(force_series, int, 0444);
212 module_param(ec_raw_mode, bool, 0444);
213 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
214 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
215 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
216 MODULE_PARM_DESC(force_series, "Force a different laptop series");
217 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
218
219 struct acer_data {
220 int mailled;
221 int threeg;
222 int brightness;
223 };
224
225 struct acer_debug {
226 struct dentry *root;
227 struct dentry *devices;
228 u32 wmid_devices;
229 };
230
231 static struct rfkill *wireless_rfkill;
232 static struct rfkill *bluetooth_rfkill;
233 static struct rfkill *threeg_rfkill;
234 static bool rfkill_inited;
235
236 /* Each low-level interface must define at least some of the following */
237 struct wmi_interface {
238 /* The WMI device type */
239 u32 type;
240
241 /* The capabilities this interface provides */
242 u32 capability;
243
244 /* Private data for the current interface */
245 struct acer_data data;
246
247 /* debugfs entries associated with this interface */
248 struct acer_debug debug;
249 };
250
251 /* The static interface pointer, points to the currently detected interface */
252 static struct wmi_interface *interface;
253
254 /*
255 * Embedded Controller quirks
256 * Some laptops require us to directly access the EC to either enable or query
257 * features that are not available through WMI.
258 */
259
260 struct quirk_entry {
261 u8 wireless;
262 u8 mailled;
263 s8 brightness;
264 u8 bluetooth;
265 };
266
267 static struct quirk_entry *quirks;
268
269 static void set_quirks(void)
270 {
271 if (!interface)
272 return;
273
274 if (quirks->mailled)
275 interface->capability |= ACER_CAP_MAILLED;
276
277 if (quirks->brightness)
278 interface->capability |= ACER_CAP_BRIGHTNESS;
279 }
280
281 static int dmi_matched(const struct dmi_system_id *dmi)
282 {
283 quirks = dmi->driver_data;
284 return 1;
285 }
286
287 static struct quirk_entry quirk_unknown = {
288 };
289
290 static struct quirk_entry quirk_acer_aspire_1520 = {
291 .brightness = -1,
292 };
293
294 static struct quirk_entry quirk_acer_travelmate_2490 = {
295 .mailled = 1,
296 };
297
298 /* This AMW0 laptop has no bluetooth */
299 static struct quirk_entry quirk_medion_md_98300 = {
300 .wireless = 1,
301 };
302
303 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
304 .wireless = 2,
305 };
306
307 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
308 static struct dmi_system_id __devinitdata acer_blacklist[] = {
309 {
310 .ident = "Acer Aspire One (SSD)",
311 .matches = {
312 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
313 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
314 },
315 },
316 {
317 .ident = "Acer Aspire One (HDD)",
318 .matches = {
319 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
320 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
321 },
322 },
323 {}
324 };
325
326 static struct dmi_system_id acer_quirks[] = {
327 {
328 .callback = dmi_matched,
329 .ident = "Acer Aspire 1360",
330 .matches = {
331 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
332 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
333 },
334 .driver_data = &quirk_acer_aspire_1520,
335 },
336 {
337 .callback = dmi_matched,
338 .ident = "Acer Aspire 1520",
339 .matches = {
340 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
341 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
342 },
343 .driver_data = &quirk_acer_aspire_1520,
344 },
345 {
346 .callback = dmi_matched,
347 .ident = "Acer Aspire 3100",
348 .matches = {
349 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
350 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
351 },
352 .driver_data = &quirk_acer_travelmate_2490,
353 },
354 {
355 .callback = dmi_matched,
356 .ident = "Acer Aspire 3610",
357 .matches = {
358 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
359 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
360 },
361 .driver_data = &quirk_acer_travelmate_2490,
362 },
363 {
364 .callback = dmi_matched,
365 .ident = "Acer Aspire 5100",
366 .matches = {
367 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
368 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
369 },
370 .driver_data = &quirk_acer_travelmate_2490,
371 },
372 {
373 .callback = dmi_matched,
374 .ident = "Acer Aspire 5610",
375 .matches = {
376 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
377 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
378 },
379 .driver_data = &quirk_acer_travelmate_2490,
380 },
381 {
382 .callback = dmi_matched,
383 .ident = "Acer Aspire 5630",
384 .matches = {
385 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
386 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
387 },
388 .driver_data = &quirk_acer_travelmate_2490,
389 },
390 {
391 .callback = dmi_matched,
392 .ident = "Acer Aspire 5650",
393 .matches = {
394 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
395 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
396 },
397 .driver_data = &quirk_acer_travelmate_2490,
398 },
399 {
400 .callback = dmi_matched,
401 .ident = "Acer Aspire 5680",
402 .matches = {
403 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
404 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
405 },
406 .driver_data = &quirk_acer_travelmate_2490,
407 },
408 {
409 .callback = dmi_matched,
410 .ident = "Acer Aspire 9110",
411 .matches = {
412 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
413 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
414 },
415 .driver_data = &quirk_acer_travelmate_2490,
416 },
417 {
418 .callback = dmi_matched,
419 .ident = "Acer TravelMate 2490",
420 .matches = {
421 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
422 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
423 },
424 .driver_data = &quirk_acer_travelmate_2490,
425 },
426 {
427 .callback = dmi_matched,
428 .ident = "Acer TravelMate 4200",
429 .matches = {
430 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
431 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
432 },
433 .driver_data = &quirk_acer_travelmate_2490,
434 },
435 {
436 .callback = dmi_matched,
437 .ident = "Fujitsu Siemens Amilo Li 1718",
438 .matches = {
439 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
440 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
441 },
442 .driver_data = &quirk_fujitsu_amilo_li_1718,
443 },
444 {
445 .callback = dmi_matched,
446 .ident = "Medion MD 98300",
447 .matches = {
448 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
449 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
450 },
451 .driver_data = &quirk_medion_md_98300,
452 },
453 {}
454 };
455
456 /* Find which quirks are needed for a particular vendor/ model pair */
457 static void find_quirks(void)
458 {
459 if (!force_series) {
460 dmi_check_system(acer_quirks);
461 } else if (force_series == 2490) {
462 quirks = &quirk_acer_travelmate_2490;
463 }
464
465 if (quirks == NULL)
466 quirks = &quirk_unknown;
467
468 set_quirks();
469 }
470
471 /*
472 * General interface convenience methods
473 */
474
475 static bool has_cap(u32 cap)
476 {
477 if ((interface->capability & cap) != 0)
478 return 1;
479
480 return 0;
481 }
482
483 /*
484 * AMW0 (V1) interface
485 */
486 struct wmab_args {
487 u32 eax;
488 u32 ebx;
489 u32 ecx;
490 u32 edx;
491 };
492
493 struct wmab_ret {
494 u32 eax;
495 u32 ebx;
496 u32 ecx;
497 u32 edx;
498 u32 eex;
499 };
500
501 static acpi_status wmab_execute(struct wmab_args *regbuf,
502 struct acpi_buffer *result)
503 {
504 struct acpi_buffer input;
505 acpi_status status;
506 input.length = sizeof(struct wmab_args);
507 input.pointer = (u8 *)regbuf;
508
509 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
510
511 return status;
512 }
513
514 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
515 struct wmi_interface *iface)
516 {
517 int err;
518 u8 result;
519
520 switch (cap) {
521 case ACER_CAP_MAILLED:
522 switch (quirks->mailled) {
523 default:
524 err = ec_read(0xA, &result);
525 if (err)
526 return AE_ERROR;
527 *value = (result >> 7) & 0x1;
528 return AE_OK;
529 }
530 break;
531 case ACER_CAP_WIRELESS:
532 switch (quirks->wireless) {
533 case 1:
534 err = ec_read(0x7B, &result);
535 if (err)
536 return AE_ERROR;
537 *value = result & 0x1;
538 return AE_OK;
539 case 2:
540 err = ec_read(0x71, &result);
541 if (err)
542 return AE_ERROR;
543 *value = result & 0x1;
544 return AE_OK;
545 default:
546 err = ec_read(0xA, &result);
547 if (err)
548 return AE_ERROR;
549 *value = (result >> 2) & 0x1;
550 return AE_OK;
551 }
552 break;
553 case ACER_CAP_BLUETOOTH:
554 switch (quirks->bluetooth) {
555 default:
556 err = ec_read(0xA, &result);
557 if (err)
558 return AE_ERROR;
559 *value = (result >> 4) & 0x1;
560 return AE_OK;
561 }
562 break;
563 case ACER_CAP_BRIGHTNESS:
564 switch (quirks->brightness) {
565 default:
566 err = ec_read(0x83, &result);
567 if (err)
568 return AE_ERROR;
569 *value = result;
570 return AE_OK;
571 }
572 break;
573 default:
574 return AE_ERROR;
575 }
576 return AE_OK;
577 }
578
579 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
580 {
581 struct wmab_args args;
582
583 args.eax = ACER_AMW0_WRITE;
584 args.ebx = value ? (1<<8) : 0;
585 args.ecx = args.edx = 0;
586
587 switch (cap) {
588 case ACER_CAP_MAILLED:
589 if (value > 1)
590 return AE_BAD_PARAMETER;
591 args.ebx |= ACER_AMW0_MAILLED_MASK;
592 break;
593 case ACER_CAP_WIRELESS:
594 if (value > 1)
595 return AE_BAD_PARAMETER;
596 args.ebx |= ACER_AMW0_WIRELESS_MASK;
597 break;
598 case ACER_CAP_BLUETOOTH:
599 if (value > 1)
600 return AE_BAD_PARAMETER;
601 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
602 break;
603 case ACER_CAP_BRIGHTNESS:
604 if (value > max_brightness)
605 return AE_BAD_PARAMETER;
606 switch (quirks->brightness) {
607 default:
608 return ec_write(0x83, value);
609 break;
610 }
611 default:
612 return AE_ERROR;
613 }
614
615 /* Actually do the set */
616 return wmab_execute(&args, NULL);
617 }
618
619 static acpi_status AMW0_find_mailled(void)
620 {
621 struct wmab_args args;
622 struct wmab_ret ret;
623 acpi_status status = AE_OK;
624 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
625 union acpi_object *obj;
626
627 args.eax = 0x86;
628 args.ebx = args.ecx = args.edx = 0;
629
630 status = wmab_execute(&args, &out);
631 if (ACPI_FAILURE(status))
632 return status;
633
634 obj = (union acpi_object *) out.pointer;
635 if (obj && obj->type == ACPI_TYPE_BUFFER &&
636 obj->buffer.length == sizeof(struct wmab_ret)) {
637 ret = *((struct wmab_ret *) obj->buffer.pointer);
638 } else {
639 kfree(out.pointer);
640 return AE_ERROR;
641 }
642
643 if (ret.eex & 0x1)
644 interface->capability |= ACER_CAP_MAILLED;
645
646 kfree(out.pointer);
647
648 return AE_OK;
649 }
650
651 static acpi_status AMW0_set_capabilities(void)
652 {
653 struct wmab_args args;
654 struct wmab_ret ret;
655 acpi_status status;
656 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
657 union acpi_object *obj;
658
659 /*
660 * On laptops with this strange GUID (non Acer), normal probing doesn't
661 * work.
662 */
663 if (wmi_has_guid(AMW0_GUID2)) {
664 interface->capability |= ACER_CAP_WIRELESS;
665 return AE_OK;
666 }
667
668 args.eax = ACER_AMW0_WRITE;
669 args.ecx = args.edx = 0;
670
671 args.ebx = 0xa2 << 8;
672 args.ebx |= ACER_AMW0_WIRELESS_MASK;
673
674 status = wmab_execute(&args, &out);
675 if (ACPI_FAILURE(status))
676 return status;
677
678 obj = out.pointer;
679 if (obj && obj->type == ACPI_TYPE_BUFFER &&
680 obj->buffer.length == sizeof(struct wmab_ret)) {
681 ret = *((struct wmab_ret *) obj->buffer.pointer);
682 } else {
683 status = AE_ERROR;
684 goto out;
685 }
686
687 if (ret.eax & 0x1)
688 interface->capability |= ACER_CAP_WIRELESS;
689
690 args.ebx = 2 << 8;
691 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
692
693 /*
694 * It's ok to use existing buffer for next wmab_execute call.
695 * But we need to kfree(out.pointer) if next wmab_execute fail.
696 */
697 status = wmab_execute(&args, &out);
698 if (ACPI_FAILURE(status))
699 goto out;
700
701 obj = (union acpi_object *) out.pointer;
702 if (obj && obj->type == ACPI_TYPE_BUFFER
703 && obj->buffer.length == sizeof(struct wmab_ret)) {
704 ret = *((struct wmab_ret *) obj->buffer.pointer);
705 } else {
706 status = AE_ERROR;
707 goto out;
708 }
709
710 if (ret.eax & 0x1)
711 interface->capability |= ACER_CAP_BLUETOOTH;
712
713 /*
714 * This appears to be safe to enable, since all Wistron based laptops
715 * appear to use the same EC register for brightness, even if they
716 * differ for wireless, etc
717 */
718 if (quirks->brightness >= 0)
719 interface->capability |= ACER_CAP_BRIGHTNESS;
720
721 status = AE_OK;
722 out:
723 kfree(out.pointer);
724 return status;
725 }
726
727 static struct wmi_interface AMW0_interface = {
728 .type = ACER_AMW0,
729 };
730
731 static struct wmi_interface AMW0_V2_interface = {
732 .type = ACER_AMW0_V2,
733 };
734
735 /*
736 * New interface (The WMID interface)
737 */
738 static acpi_status
739 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
740 {
741 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
742 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
743 union acpi_object *obj;
744 u32 tmp;
745 acpi_status status;
746
747 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
748
749 if (ACPI_FAILURE(status))
750 return status;
751
752 obj = (union acpi_object *) result.pointer;
753 if (obj && obj->type == ACPI_TYPE_BUFFER &&
754 (obj->buffer.length == sizeof(u32) ||
755 obj->buffer.length == sizeof(u64))) {
756 tmp = *((u32 *) obj->buffer.pointer);
757 } else if (obj->type == ACPI_TYPE_INTEGER) {
758 tmp = (u32) obj->integer.value;
759 } else {
760 tmp = 0;
761 }
762
763 if (out)
764 *out = tmp;
765
766 kfree(result.pointer);
767
768 return status;
769 }
770
771 static acpi_status WMID_get_u32(u32 *value, u32 cap,
772 struct wmi_interface *iface)
773 {
774 acpi_status status;
775 u8 tmp;
776 u32 result, method_id = 0;
777
778 switch (cap) {
779 case ACER_CAP_WIRELESS:
780 method_id = ACER_WMID_GET_WIRELESS_METHODID;
781 break;
782 case ACER_CAP_BLUETOOTH:
783 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
784 break;
785 case ACER_CAP_BRIGHTNESS:
786 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
787 break;
788 case ACER_CAP_THREEG:
789 method_id = ACER_WMID_GET_THREEG_METHODID;
790 break;
791 case ACER_CAP_MAILLED:
792 if (quirks->mailled == 1) {
793 ec_read(0x9f, &tmp);
794 *value = tmp & 0x1;
795 return 0;
796 }
797 default:
798 return AE_ERROR;
799 }
800 status = WMI_execute_u32(method_id, 0, &result);
801
802 if (ACPI_SUCCESS(status))
803 *value = (u8)result;
804
805 return status;
806 }
807
808 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
809 {
810 u32 method_id = 0;
811 char param;
812
813 switch (cap) {
814 case ACER_CAP_BRIGHTNESS:
815 if (value > max_brightness)
816 return AE_BAD_PARAMETER;
817 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
818 break;
819 case ACER_CAP_WIRELESS:
820 if (value > 1)
821 return AE_BAD_PARAMETER;
822 method_id = ACER_WMID_SET_WIRELESS_METHODID;
823 break;
824 case ACER_CAP_BLUETOOTH:
825 if (value > 1)
826 return AE_BAD_PARAMETER;
827 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
828 break;
829 case ACER_CAP_THREEG:
830 if (value > 1)
831 return AE_BAD_PARAMETER;
832 method_id = ACER_WMID_SET_THREEG_METHODID;
833 break;
834 case ACER_CAP_MAILLED:
835 if (value > 1)
836 return AE_BAD_PARAMETER;
837 if (quirks->mailled == 1) {
838 param = value ? 0x92 : 0x93;
839 i8042_lock_chip();
840 i8042_command(&param, 0x1059);
841 i8042_unlock_chip();
842 return 0;
843 }
844 break;
845 default:
846 return AE_ERROR;
847 }
848 return WMI_execute_u32(method_id, (u32)value, NULL);
849 }
850
851 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
852 {
853 struct hotkey_function_type_aa *type_aa;
854
855 /* We are looking for OEM-specific Type AAh */
856 if (header->type != 0xAA)
857 return;
858
859 has_type_aa = true;
860 type_aa = (struct hotkey_function_type_aa *) header;
861
862 pr_info("Function bitmap for Communication Button: 0x%x\n",
863 type_aa->commun_func_bitmap);
864
865 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
866 interface->capability |= ACER_CAP_WIRELESS;
867 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
868 interface->capability |= ACER_CAP_THREEG;
869 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
870 interface->capability |= ACER_CAP_BLUETOOTH;
871 }
872
873 static acpi_status WMID_set_capabilities(void)
874 {
875 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
876 union acpi_object *obj;
877 acpi_status status;
878 u32 devices;
879
880 status = wmi_query_block(WMID_GUID2, 1, &out);
881 if (ACPI_FAILURE(status))
882 return status;
883
884 obj = (union acpi_object *) out.pointer;
885 if (obj && obj->type == ACPI_TYPE_BUFFER &&
886 (obj->buffer.length == sizeof(u32) ||
887 obj->buffer.length == sizeof(u64))) {
888 devices = *((u32 *) obj->buffer.pointer);
889 } else if (obj->type == ACPI_TYPE_INTEGER) {
890 devices = (u32) obj->integer.value;
891 } else {
892 kfree(out.pointer);
893 return AE_ERROR;
894 }
895
896 dmi_walk(type_aa_dmi_decode, NULL);
897 if (!has_type_aa) {
898 interface->capability |= ACER_CAP_WIRELESS;
899 if (devices & 0x40)
900 interface->capability |= ACER_CAP_THREEG;
901 if (devices & 0x10)
902 interface->capability |= ACER_CAP_BLUETOOTH;
903 }
904
905 /* WMID always provides brightness methods */
906 interface->capability |= ACER_CAP_BRIGHTNESS;
907
908 if (!(devices & 0x20))
909 max_brightness = 0x9;
910
911 kfree(out.pointer);
912 return status;
913 }
914
915 static struct wmi_interface wmid_interface = {
916 .type = ACER_WMID,
917 };
918
919 /*
920 * Generic Device (interface-independent)
921 */
922
923 static acpi_status get_u32(u32 *value, u32 cap)
924 {
925 acpi_status status = AE_ERROR;
926
927 switch (interface->type) {
928 case ACER_AMW0:
929 status = AMW0_get_u32(value, cap, interface);
930 break;
931 case ACER_AMW0_V2:
932 if (cap == ACER_CAP_MAILLED) {
933 status = AMW0_get_u32(value, cap, interface);
934 break;
935 }
936 case ACER_WMID:
937 status = WMID_get_u32(value, cap, interface);
938 break;
939 }
940
941 return status;
942 }
943
944 static acpi_status set_u32(u32 value, u32 cap)
945 {
946 acpi_status status;
947
948 if (interface->capability & cap) {
949 switch (interface->type) {
950 case ACER_AMW0:
951 return AMW0_set_u32(value, cap, interface);
952 case ACER_AMW0_V2:
953 if (cap == ACER_CAP_MAILLED)
954 return AMW0_set_u32(value, cap, interface);
955
956 /*
957 * On some models, some WMID methods don't toggle
958 * properly. For those cases, we want to run the AMW0
959 * method afterwards to be certain we've really toggled
960 * the device state.
961 */
962 if (cap == ACER_CAP_WIRELESS ||
963 cap == ACER_CAP_BLUETOOTH) {
964 status = WMID_set_u32(value, cap, interface);
965 if (ACPI_FAILURE(status))
966 return status;
967
968 return AMW0_set_u32(value, cap, interface);
969 }
970 case ACER_WMID:
971 return WMID_set_u32(value, cap, interface);
972 default:
973 return AE_BAD_PARAMETER;
974 }
975 }
976 return AE_BAD_PARAMETER;
977 }
978
979 static void __init acer_commandline_init(void)
980 {
981 /*
982 * These will all fail silently if the value given is invalid, or the
983 * capability isn't available on the given interface
984 */
985 if (mailled >= 0)
986 set_u32(mailled, ACER_CAP_MAILLED);
987 if (!has_type_aa && threeg >= 0)
988 set_u32(threeg, ACER_CAP_THREEG);
989 if (brightness >= 0)
990 set_u32(brightness, ACER_CAP_BRIGHTNESS);
991 }
992
993 /*
994 * LED device (Mail LED only, no other LEDs known yet)
995 */
996 static void mail_led_set(struct led_classdev *led_cdev,
997 enum led_brightness value)
998 {
999 set_u32(value, ACER_CAP_MAILLED);
1000 }
1001
1002 static struct led_classdev mail_led = {
1003 .name = "acer-wmi::mail",
1004 .brightness_set = mail_led_set,
1005 };
1006
1007 static int __devinit acer_led_init(struct device *dev)
1008 {
1009 return led_classdev_register(dev, &mail_led);
1010 }
1011
1012 static void acer_led_exit(void)
1013 {
1014 set_u32(LED_OFF, ACER_CAP_MAILLED);
1015 led_classdev_unregister(&mail_led);
1016 }
1017
1018 /*
1019 * Backlight device
1020 */
1021 static struct backlight_device *acer_backlight_device;
1022
1023 static int read_brightness(struct backlight_device *bd)
1024 {
1025 u32 value;
1026 get_u32(&value, ACER_CAP_BRIGHTNESS);
1027 return value;
1028 }
1029
1030 static int update_bl_status(struct backlight_device *bd)
1031 {
1032 int intensity = bd->props.brightness;
1033
1034 if (bd->props.power != FB_BLANK_UNBLANK)
1035 intensity = 0;
1036 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1037 intensity = 0;
1038
1039 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1040
1041 return 0;
1042 }
1043
1044 static const struct backlight_ops acer_bl_ops = {
1045 .get_brightness = read_brightness,
1046 .update_status = update_bl_status,
1047 };
1048
1049 static int __devinit acer_backlight_init(struct device *dev)
1050 {
1051 struct backlight_properties props;
1052 struct backlight_device *bd;
1053
1054 memset(&props, 0, sizeof(struct backlight_properties));
1055 props.type = BACKLIGHT_PLATFORM;
1056 props.max_brightness = max_brightness;
1057 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1058 &props);
1059 if (IS_ERR(bd)) {
1060 pr_err("Could not register Acer backlight device\n");
1061 acer_backlight_device = NULL;
1062 return PTR_ERR(bd);
1063 }
1064
1065 acer_backlight_device = bd;
1066
1067 bd->props.power = FB_BLANK_UNBLANK;
1068 bd->props.brightness = read_brightness(bd);
1069 backlight_update_status(bd);
1070 return 0;
1071 }
1072
1073 static void acer_backlight_exit(void)
1074 {
1075 backlight_device_unregister(acer_backlight_device);
1076 }
1077
1078 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1079 {
1080 struct wmid3_gds_return_value return_value;
1081 acpi_status status;
1082 union acpi_object *obj;
1083 struct wmid3_gds_input_param params = {
1084 .function_num = 0x1,
1085 .hotkey_number = 0x01,
1086 .devices = device,
1087 };
1088 struct acpi_buffer input = {
1089 sizeof(struct wmid3_gds_input_param),
1090 &params
1091 };
1092 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1093
1094 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1095 if (ACPI_FAILURE(status))
1096 return status;
1097
1098 obj = output.pointer;
1099
1100 if (!obj)
1101 return AE_ERROR;
1102 else if (obj->type != ACPI_TYPE_BUFFER) {
1103 kfree(obj);
1104 return AE_ERROR;
1105 }
1106 if (obj->buffer.length != 8) {
1107 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1108 kfree(obj);
1109 return AE_ERROR;
1110 }
1111
1112 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1113 kfree(obj);
1114
1115 if (return_value.error_code || return_value.ec_return_value)
1116 pr_warn("Get Device Status failed: 0x%x - 0x%x\n",
1117 return_value.error_code,
1118 return_value.ec_return_value);
1119 else
1120 *value = !!(return_value.devices & device);
1121
1122 return status;
1123 }
1124
1125 static acpi_status get_device_status(u32 *value, u32 cap)
1126 {
1127 if (wmi_has_guid(WMID_GUID3)) {
1128 u16 device;
1129
1130 switch (cap) {
1131 case ACER_CAP_WIRELESS:
1132 device = ACER_WMID3_GDS_WIRELESS;
1133 break;
1134 case ACER_CAP_BLUETOOTH:
1135 device = ACER_WMID3_GDS_BLUETOOTH;
1136 break;
1137 case ACER_CAP_THREEG:
1138 device = ACER_WMID3_GDS_THREEG;
1139 break;
1140 default:
1141 return AE_ERROR;
1142 }
1143 return wmid3_get_device_status(value, device);
1144
1145 } else {
1146 return get_u32(value, cap);
1147 }
1148 }
1149
1150 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1151 {
1152 struct wmid3_gds_return_value return_value;
1153 acpi_status status;
1154 union acpi_object *obj;
1155 u16 devices;
1156 struct wmid3_gds_input_param params = {
1157 .function_num = 0x1,
1158 .hotkey_number = 0x01,
1159 .devices = ACER_WMID3_GDS_WIRELESS &
1160 ACER_WMID3_GDS_THREEG &
1161 ACER_WMID3_GDS_WIMAX &
1162 ACER_WMID3_GDS_BLUETOOTH,
1163 };
1164 struct acpi_buffer input = {
1165 sizeof(struct wmid3_gds_input_param),
1166 &params
1167 };
1168 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1169 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1170
1171 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1172 if (ACPI_FAILURE(status))
1173 return status;
1174
1175 obj = output.pointer;
1176
1177 if (!obj)
1178 return AE_ERROR;
1179 else if (obj->type != ACPI_TYPE_BUFFER) {
1180 kfree(obj);
1181 return AE_ERROR;
1182 }
1183 if (obj->buffer.length != 8) {
1184 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1185 kfree(obj);
1186 return AE_ERROR;
1187 }
1188
1189 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1190 kfree(obj);
1191
1192 if (return_value.error_code || return_value.ec_return_value) {
1193 pr_warning("Get Current Device Status failed: "
1194 "0x%x - 0x%x\n", return_value.error_code,
1195 return_value.ec_return_value);
1196 return status;
1197 }
1198
1199 devices = return_value.devices;
1200 params.function_num = 0x2;
1201 params.hotkey_number = 0x01;
1202 params.devices = (value) ? (devices | device) : (devices & ~device);
1203
1204 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
1205 if (ACPI_FAILURE(status))
1206 return status;
1207
1208 obj = output2.pointer;
1209
1210 if (!obj)
1211 return AE_ERROR;
1212 else if (obj->type != ACPI_TYPE_BUFFER) {
1213 kfree(obj);
1214 return AE_ERROR;
1215 }
1216 if (obj->buffer.length != 4) {
1217 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1218 kfree(obj);
1219 return AE_ERROR;
1220 }
1221
1222 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1223 kfree(obj);
1224
1225 if (return_value.error_code || return_value.ec_return_value)
1226 pr_warning("Set Device Status failed: "
1227 "0x%x - 0x%x\n", return_value.error_code,
1228 return_value.ec_return_value);
1229
1230 return status;
1231 }
1232
1233 static acpi_status set_device_status(u32 value, u32 cap)
1234 {
1235 if (wmi_has_guid(WMID_GUID3)) {
1236 u16 device;
1237
1238 switch (cap) {
1239 case ACER_CAP_WIRELESS:
1240 device = ACER_WMID3_GDS_WIRELESS;
1241 break;
1242 case ACER_CAP_BLUETOOTH:
1243 device = ACER_WMID3_GDS_BLUETOOTH;
1244 break;
1245 case ACER_CAP_THREEG:
1246 device = ACER_WMID3_GDS_THREEG;
1247 break;
1248 default:
1249 return AE_ERROR;
1250 }
1251 return wmid3_set_device_status(value, device);
1252
1253 } else {
1254 return set_u32(value, cap);
1255 }
1256 }
1257
1258 /*
1259 * Rfkill devices
1260 */
1261 static void acer_rfkill_update(struct work_struct *ignored);
1262 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1263 static void acer_rfkill_update(struct work_struct *ignored)
1264 {
1265 u32 state;
1266 acpi_status status;
1267
1268 status = get_u32(&state, ACER_CAP_WIRELESS);
1269 if (ACPI_SUCCESS(status))
1270 rfkill_set_sw_state(wireless_rfkill, !state);
1271
1272 if (has_cap(ACER_CAP_BLUETOOTH)) {
1273 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1274 if (ACPI_SUCCESS(status))
1275 rfkill_set_sw_state(bluetooth_rfkill, !state);
1276 }
1277
1278 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1279 status = wmid3_get_device_status(&state,
1280 ACER_WMID3_GDS_THREEG);
1281 if (ACPI_SUCCESS(status))
1282 rfkill_set_sw_state(threeg_rfkill, !state);
1283 }
1284
1285 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1286 }
1287
1288 static int acer_rfkill_set(void *data, bool blocked)
1289 {
1290 acpi_status status;
1291 u32 cap = (unsigned long)data;
1292
1293 if (rfkill_inited) {
1294 status = set_device_status(!blocked, cap);
1295 if (ACPI_FAILURE(status))
1296 return -ENODEV;
1297 }
1298
1299 return 0;
1300 }
1301
1302 static const struct rfkill_ops acer_rfkill_ops = {
1303 .set_block = acer_rfkill_set,
1304 };
1305
1306 static struct rfkill *acer_rfkill_register(struct device *dev,
1307 enum rfkill_type type,
1308 char *name, u32 cap)
1309 {
1310 int err;
1311 struct rfkill *rfkill_dev;
1312 u32 state;
1313 acpi_status status;
1314
1315 rfkill_dev = rfkill_alloc(name, dev, type,
1316 &acer_rfkill_ops,
1317 (void *)(unsigned long)cap);
1318 if (!rfkill_dev)
1319 return ERR_PTR(-ENOMEM);
1320
1321 status = get_device_status(&state, cap);
1322
1323 err = rfkill_register(rfkill_dev);
1324 if (err) {
1325 rfkill_destroy(rfkill_dev);
1326 return ERR_PTR(err);
1327 }
1328
1329 if (ACPI_SUCCESS(status))
1330 rfkill_set_sw_state(rfkill_dev, !state);
1331
1332 return rfkill_dev;
1333 }
1334
1335 static int acer_rfkill_init(struct device *dev)
1336 {
1337 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1338 "acer-wireless", ACER_CAP_WIRELESS);
1339 if (IS_ERR(wireless_rfkill))
1340 return PTR_ERR(wireless_rfkill);
1341
1342 if (has_cap(ACER_CAP_BLUETOOTH)) {
1343 bluetooth_rfkill = acer_rfkill_register(dev,
1344 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1345 ACER_CAP_BLUETOOTH);
1346 if (IS_ERR(bluetooth_rfkill)) {
1347 rfkill_unregister(wireless_rfkill);
1348 rfkill_destroy(wireless_rfkill);
1349 return PTR_ERR(bluetooth_rfkill);
1350 }
1351 }
1352
1353 if (has_cap(ACER_CAP_THREEG)) {
1354 threeg_rfkill = acer_rfkill_register(dev,
1355 RFKILL_TYPE_WWAN, "acer-threeg",
1356 ACER_CAP_THREEG);
1357 if (IS_ERR(threeg_rfkill)) {
1358 rfkill_unregister(wireless_rfkill);
1359 rfkill_destroy(wireless_rfkill);
1360 rfkill_unregister(bluetooth_rfkill);
1361 rfkill_destroy(bluetooth_rfkill);
1362 return PTR_ERR(threeg_rfkill);
1363 }
1364 }
1365
1366 rfkill_inited = true;
1367
1368 if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1369 schedule_delayed_work(&acer_rfkill_work,
1370 round_jiffies_relative(HZ));
1371
1372 return 0;
1373 }
1374
1375 static void acer_rfkill_exit(void)
1376 {
1377 if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1378 cancel_delayed_work_sync(&acer_rfkill_work);
1379
1380 rfkill_unregister(wireless_rfkill);
1381 rfkill_destroy(wireless_rfkill);
1382
1383 if (has_cap(ACER_CAP_BLUETOOTH)) {
1384 rfkill_unregister(bluetooth_rfkill);
1385 rfkill_destroy(bluetooth_rfkill);
1386 }
1387
1388 if (has_cap(ACER_CAP_THREEG)) {
1389 rfkill_unregister(threeg_rfkill);
1390 rfkill_destroy(threeg_rfkill);
1391 }
1392 return;
1393 }
1394
1395 /*
1396 * sysfs interface
1397 */
1398 static ssize_t show_bool_threeg(struct device *dev,
1399 struct device_attribute *attr, char *buf)
1400 {
1401 u32 result; \
1402 acpi_status status;
1403 if (wmi_has_guid(WMID_GUID3))
1404 status = wmid3_get_device_status(&result,
1405 ACER_WMID3_GDS_THREEG);
1406 else
1407 status = get_u32(&result, ACER_CAP_THREEG);
1408 if (ACPI_SUCCESS(status))
1409 return sprintf(buf, "%u\n", result);
1410 return sprintf(buf, "Read error\n");
1411 }
1412
1413 static ssize_t set_bool_threeg(struct device *dev,
1414 struct device_attribute *attr, const char *buf, size_t count)
1415 {
1416 u32 tmp = simple_strtoul(buf, NULL, 10);
1417 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1418 if (ACPI_FAILURE(status))
1419 return -EINVAL;
1420 return count;
1421 }
1422 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1423 set_bool_threeg);
1424
1425 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1426 char *buf)
1427 {
1428 switch (interface->type) {
1429 case ACER_AMW0:
1430 return sprintf(buf, "AMW0\n");
1431 case ACER_AMW0_V2:
1432 return sprintf(buf, "AMW0 v2\n");
1433 case ACER_WMID:
1434 return sprintf(buf, "WMID\n");
1435 default:
1436 return sprintf(buf, "Error!\n");
1437 }
1438 }
1439
1440 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1441
1442 static void acer_wmi_notify(u32 value, void *context)
1443 {
1444 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1445 union acpi_object *obj;
1446 struct event_return_value return_value;
1447 acpi_status status;
1448
1449 status = wmi_get_event_data(value, &response);
1450 if (status != AE_OK) {
1451 pr_warn("bad event status 0x%x\n", status);
1452 return;
1453 }
1454
1455 obj = (union acpi_object *)response.pointer;
1456
1457 if (!obj)
1458 return;
1459 if (obj->type != ACPI_TYPE_BUFFER) {
1460 pr_warn("Unknown response received %d\n", obj->type);
1461 kfree(obj);
1462 return;
1463 }
1464 if (obj->buffer.length != 8) {
1465 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1466 kfree(obj);
1467 return;
1468 }
1469
1470 return_value = *((struct event_return_value *)obj->buffer.pointer);
1471 kfree(obj);
1472
1473 switch (return_value.function) {
1474 case WMID_HOTKEY_EVENT:
1475 if (return_value.device_state) {
1476 u16 device_state = return_value.device_state;
1477 pr_debug("device state: 0x%x\n", device_state);
1478 if (has_cap(ACER_CAP_WIRELESS))
1479 rfkill_set_sw_state(wireless_rfkill,
1480 !(device_state & ACER_WMID3_GDS_WIRELESS));
1481 if (has_cap(ACER_CAP_BLUETOOTH))
1482 rfkill_set_sw_state(bluetooth_rfkill,
1483 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1484 if (has_cap(ACER_CAP_THREEG))
1485 rfkill_set_sw_state(threeg_rfkill,
1486 !(device_state & ACER_WMID3_GDS_THREEG));
1487 }
1488 if (!sparse_keymap_report_event(acer_wmi_input_dev,
1489 return_value.key_num, 1, true))
1490 pr_warn("Unknown key number - 0x%x\n",
1491 return_value.key_num);
1492 break;
1493 default:
1494 pr_warn("Unknown function number - %d - %d\n",
1495 return_value.function, return_value.key_num);
1496 break;
1497 }
1498 }
1499
1500 static acpi_status
1501 wmid3_set_lm_mode(struct lm_input_params *params,
1502 struct lm_return_value *return_value)
1503 {
1504 acpi_status status;
1505 union acpi_object *obj;
1506
1507 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1508 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1509
1510 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1511 if (ACPI_FAILURE(status))
1512 return status;
1513
1514 obj = output.pointer;
1515
1516 if (!obj)
1517 return AE_ERROR;
1518 else if (obj->type != ACPI_TYPE_BUFFER) {
1519 kfree(obj);
1520 return AE_ERROR;
1521 }
1522 if (obj->buffer.length != 4) {
1523 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1524 kfree(obj);
1525 return AE_ERROR;
1526 }
1527
1528 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1529 kfree(obj);
1530
1531 return status;
1532 }
1533
1534 static int acer_wmi_enable_ec_raw(void)
1535 {
1536 struct lm_return_value return_value;
1537 acpi_status status;
1538 struct lm_input_params params = {
1539 .function_num = 0x1,
1540 .commun_devices = 0xFFFF,
1541 .devices = 0xFFFF,
1542 .lm_status = 0x00, /* Launch Manager Deactive */
1543 };
1544
1545 status = wmid3_set_lm_mode(&params, &return_value);
1546
1547 if (return_value.error_code || return_value.ec_return_value)
1548 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1549 return_value.error_code,
1550 return_value.ec_return_value);
1551 else
1552 pr_info("Enabled EC raw mode\n");
1553
1554 return status;
1555 }
1556
1557 static int acer_wmi_enable_lm(void)
1558 {
1559 struct lm_return_value return_value;
1560 acpi_status status;
1561 struct lm_input_params params = {
1562 .function_num = 0x1,
1563 .commun_devices = 0xFFFF,
1564 .devices = 0xFFFF,
1565 .lm_status = 0x01, /* Launch Manager Active */
1566 };
1567
1568 status = wmid3_set_lm_mode(&params, &return_value);
1569
1570 if (return_value.error_code || return_value.ec_return_value)
1571 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1572 return_value.error_code,
1573 return_value.ec_return_value);
1574
1575 return status;
1576 }
1577
1578 static int __init acer_wmi_input_setup(void)
1579 {
1580 acpi_status status;
1581 int err;
1582
1583 acer_wmi_input_dev = input_allocate_device();
1584 if (!acer_wmi_input_dev)
1585 return -ENOMEM;
1586
1587 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1588 acer_wmi_input_dev->phys = "wmi/input0";
1589 acer_wmi_input_dev->id.bustype = BUS_HOST;
1590
1591 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1592 if (err)
1593 goto err_free_dev;
1594
1595 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1596 acer_wmi_notify, NULL);
1597 if (ACPI_FAILURE(status)) {
1598 err = -EIO;
1599 goto err_free_keymap;
1600 }
1601
1602 err = input_register_device(acer_wmi_input_dev);
1603 if (err)
1604 goto err_uninstall_notifier;
1605
1606 return 0;
1607
1608 err_uninstall_notifier:
1609 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1610 err_free_keymap:
1611 sparse_keymap_free(acer_wmi_input_dev);
1612 err_free_dev:
1613 input_free_device(acer_wmi_input_dev);
1614 return err;
1615 }
1616
1617 static void acer_wmi_input_destroy(void)
1618 {
1619 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1620 sparse_keymap_free(acer_wmi_input_dev);
1621 input_unregister_device(acer_wmi_input_dev);
1622 }
1623
1624 /*
1625 * debugfs functions
1626 */
1627 static u32 get_wmid_devices(void)
1628 {
1629 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1630 union acpi_object *obj;
1631 acpi_status status;
1632 u32 devices = 0;
1633
1634 status = wmi_query_block(WMID_GUID2, 1, &out);
1635 if (ACPI_FAILURE(status))
1636 return 0;
1637
1638 obj = (union acpi_object *) out.pointer;
1639 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1640 (obj->buffer.length == sizeof(u32) ||
1641 obj->buffer.length == sizeof(u64))) {
1642 devices = *((u32 *) obj->buffer.pointer);
1643 } else if (obj->type == ACPI_TYPE_INTEGER) {
1644 devices = (u32) obj->integer.value;
1645 }
1646
1647 kfree(out.pointer);
1648 return devices;
1649 }
1650
1651 /*
1652 * Platform device
1653 */
1654 static int __devinit acer_platform_probe(struct platform_device *device)
1655 {
1656 int err;
1657
1658 if (has_cap(ACER_CAP_MAILLED)) {
1659 err = acer_led_init(&device->dev);
1660 if (err)
1661 goto error_mailled;
1662 }
1663
1664 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1665 err = acer_backlight_init(&device->dev);
1666 if (err)
1667 goto error_brightness;
1668 }
1669
1670 err = acer_rfkill_init(&device->dev);
1671 if (err)
1672 goto error_rfkill;
1673
1674 return err;
1675
1676 error_rfkill:
1677 if (has_cap(ACER_CAP_BRIGHTNESS))
1678 acer_backlight_exit();
1679 error_brightness:
1680 if (has_cap(ACER_CAP_MAILLED))
1681 acer_led_exit();
1682 error_mailled:
1683 return err;
1684 }
1685
1686 static int acer_platform_remove(struct platform_device *device)
1687 {
1688 if (has_cap(ACER_CAP_MAILLED))
1689 acer_led_exit();
1690 if (has_cap(ACER_CAP_BRIGHTNESS))
1691 acer_backlight_exit();
1692
1693 acer_rfkill_exit();
1694 return 0;
1695 }
1696
1697 static int acer_platform_suspend(struct platform_device *dev,
1698 pm_message_t state)
1699 {
1700 u32 value;
1701 struct acer_data *data = &interface->data;
1702
1703 if (!data)
1704 return -ENOMEM;
1705
1706 if (has_cap(ACER_CAP_MAILLED)) {
1707 get_u32(&value, ACER_CAP_MAILLED);
1708 set_u32(LED_OFF, ACER_CAP_MAILLED);
1709 data->mailled = value;
1710 }
1711
1712 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1713 get_u32(&value, ACER_CAP_BRIGHTNESS);
1714 data->brightness = value;
1715 }
1716
1717 return 0;
1718 }
1719
1720 static int acer_platform_resume(struct platform_device *device)
1721 {
1722 struct acer_data *data = &interface->data;
1723
1724 if (!data)
1725 return -ENOMEM;
1726
1727 if (has_cap(ACER_CAP_MAILLED))
1728 set_u32(data->mailled, ACER_CAP_MAILLED);
1729
1730 if (has_cap(ACER_CAP_BRIGHTNESS))
1731 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1732
1733 return 0;
1734 }
1735
1736 static void acer_platform_shutdown(struct platform_device *device)
1737 {
1738 struct acer_data *data = &interface->data;
1739
1740 if (!data)
1741 return;
1742
1743 if (has_cap(ACER_CAP_MAILLED))
1744 set_u32(LED_OFF, ACER_CAP_MAILLED);
1745 }
1746
1747 static struct platform_driver acer_platform_driver = {
1748 .driver = {
1749 .name = "acer-wmi",
1750 .owner = THIS_MODULE,
1751 },
1752 .probe = acer_platform_probe,
1753 .remove = acer_platform_remove,
1754 .suspend = acer_platform_suspend,
1755 .resume = acer_platform_resume,
1756 .shutdown = acer_platform_shutdown,
1757 };
1758
1759 static struct platform_device *acer_platform_device;
1760
1761 static int remove_sysfs(struct platform_device *device)
1762 {
1763 if (has_cap(ACER_CAP_THREEG))
1764 device_remove_file(&device->dev, &dev_attr_threeg);
1765
1766 device_remove_file(&device->dev, &dev_attr_interface);
1767
1768 return 0;
1769 }
1770
1771 static int create_sysfs(void)
1772 {
1773 int retval = -ENOMEM;
1774
1775 if (has_cap(ACER_CAP_THREEG)) {
1776 retval = device_create_file(&acer_platform_device->dev,
1777 &dev_attr_threeg);
1778 if (retval)
1779 goto error_sysfs;
1780 }
1781
1782 retval = device_create_file(&acer_platform_device->dev,
1783 &dev_attr_interface);
1784 if (retval)
1785 goto error_sysfs;
1786
1787 return 0;
1788
1789 error_sysfs:
1790 remove_sysfs(acer_platform_device);
1791 return retval;
1792 }
1793
1794 static void remove_debugfs(void)
1795 {
1796 debugfs_remove(interface->debug.devices);
1797 debugfs_remove(interface->debug.root);
1798 }
1799
1800 static int create_debugfs(void)
1801 {
1802 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1803 if (!interface->debug.root) {
1804 pr_err("Failed to create debugfs directory");
1805 return -ENOMEM;
1806 }
1807
1808 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1809 interface->debug.root,
1810 &interface->debug.wmid_devices);
1811 if (!interface->debug.devices)
1812 goto error_debugfs;
1813
1814 return 0;
1815
1816 error_debugfs:
1817 remove_debugfs();
1818 return -ENOMEM;
1819 }
1820
1821 static int __init acer_wmi_init(void)
1822 {
1823 int err;
1824
1825 pr_info("Acer Laptop ACPI-WMI Extras\n");
1826
1827 if (dmi_check_system(acer_blacklist)) {
1828 pr_info("Blacklisted hardware detected - not loading\n");
1829 return -ENODEV;
1830 }
1831
1832 find_quirks();
1833
1834 /*
1835 * Detect which ACPI-WMI interface we're using.
1836 */
1837 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1838 interface = &AMW0_V2_interface;
1839
1840 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1841 interface = &wmid_interface;
1842
1843 if (wmi_has_guid(WMID_GUID2) && interface) {
1844 if (ACPI_FAILURE(WMID_set_capabilities())) {
1845 pr_err("Unable to detect available WMID devices\n");
1846 return -ENODEV;
1847 }
1848 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1849 pr_err("No WMID device detection method found\n");
1850 return -ENODEV;
1851 }
1852
1853 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1854 interface = &AMW0_interface;
1855
1856 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1857 pr_err("Unable to detect available AMW0 devices\n");
1858 return -ENODEV;
1859 }
1860 }
1861
1862 if (wmi_has_guid(AMW0_GUID1))
1863 AMW0_find_mailled();
1864
1865 if (!interface) {
1866 pr_err("No or unsupported WMI interface, unable to load\n");
1867 return -ENODEV;
1868 }
1869
1870 set_quirks();
1871
1872 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1873 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1874 pr_info("Brightness must be controlled by "
1875 "generic video driver\n");
1876 }
1877
1878 if (wmi_has_guid(WMID_GUID3)) {
1879 if (ec_raw_mode) {
1880 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1881 pr_err("Cannot enable EC raw mode\n");
1882 return -ENODEV;
1883 }
1884 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1885 pr_err("Cannot enable Launch Manager mode\n");
1886 return -ENODEV;
1887 }
1888 } else if (ec_raw_mode) {
1889 pr_info("No WMID EC raw mode enable method\n");
1890 }
1891
1892 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1893 err = acer_wmi_input_setup();
1894 if (err)
1895 return err;
1896 }
1897
1898 err = platform_driver_register(&acer_platform_driver);
1899 if (err) {
1900 pr_err("Unable to register platform driver.\n");
1901 goto error_platform_register;
1902 }
1903
1904 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1905 if (!acer_platform_device) {
1906 err = -ENOMEM;
1907 goto error_device_alloc;
1908 }
1909
1910 err = platform_device_add(acer_platform_device);
1911 if (err)
1912 goto error_device_add;
1913
1914 err = create_sysfs();
1915 if (err)
1916 goto error_create_sys;
1917
1918 if (wmi_has_guid(WMID_GUID2)) {
1919 interface->debug.wmid_devices = get_wmid_devices();
1920 err = create_debugfs();
1921 if (err)
1922 goto error_create_debugfs;
1923 }
1924
1925 /* Override any initial settings with values from the commandline */
1926 acer_commandline_init();
1927
1928 return 0;
1929
1930 error_create_debugfs:
1931 remove_sysfs(acer_platform_device);
1932 error_create_sys:
1933 platform_device_del(acer_platform_device);
1934 error_device_add:
1935 platform_device_put(acer_platform_device);
1936 error_device_alloc:
1937 platform_driver_unregister(&acer_platform_driver);
1938 error_platform_register:
1939 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1940 acer_wmi_input_destroy();
1941
1942 return err;
1943 }
1944
1945 static void __exit acer_wmi_exit(void)
1946 {
1947 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1948 acer_wmi_input_destroy();
1949
1950 remove_sysfs(acer_platform_device);
1951 remove_debugfs();
1952 platform_device_unregister(acer_platform_device);
1953 platform_driver_unregister(&acer_platform_driver);
1954
1955 pr_info("Acer Laptop WMI Extras unloaded\n");
1956 return;
1957 }
1958
1959 module_init(acer_wmi_init);
1960 module_exit(acer_wmi_exit);
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