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 ACER_WMID_v2,
194 };
195
196 #define ACER_DEFAULT_WIRELESS 0
197 #define ACER_DEFAULT_BLUETOOTH 0
198 #define ACER_DEFAULT_MAILLED 0
199 #define ACER_DEFAULT_THREEG 0
200
201 static int max_brightness = 0xF;
202
203 static int mailled = -1;
204 static int brightness = -1;
205 static int threeg = -1;
206 static int force_series;
207 static bool ec_raw_mode;
208 static bool has_type_aa;
209 static u16 commun_func_bitmap;
210
211 module_param(mailled, int, 0444);
212 module_param(brightness, int, 0444);
213 module_param(threeg, int, 0444);
214 module_param(force_series, int, 0444);
215 module_param(ec_raw_mode, bool, 0444);
216 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
217 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
218 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
219 MODULE_PARM_DESC(force_series, "Force a different laptop series");
220 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
221
222 struct acer_data {
223 int mailled;
224 int threeg;
225 int brightness;
226 };
227
228 struct acer_debug {
229 struct dentry *root;
230 struct dentry *devices;
231 u32 wmid_devices;
232 };
233
234 static struct rfkill *wireless_rfkill;
235 static struct rfkill *bluetooth_rfkill;
236 static struct rfkill *threeg_rfkill;
237 static bool rfkill_inited;
238
239 /* Each low-level interface must define at least some of the following */
240 struct wmi_interface {
241 /* The WMI device type */
242 u32 type;
243
244 /* The capabilities this interface provides */
245 u32 capability;
246
247 /* Private data for the current interface */
248 struct acer_data data;
249
250 /* debugfs entries associated with this interface */
251 struct acer_debug debug;
252 };
253
254 /* The static interface pointer, points to the currently detected interface */
255 static struct wmi_interface *interface;
256
257 /*
258 * Embedded Controller quirks
259 * Some laptops require us to directly access the EC to either enable or query
260 * features that are not available through WMI.
261 */
262
263 struct quirk_entry {
264 u8 wireless;
265 u8 mailled;
266 s8 brightness;
267 u8 bluetooth;
268 };
269
270 static struct quirk_entry *quirks;
271
set_quirks(void)272 static void set_quirks(void)
273 {
274 if (!interface)
275 return;
276
277 if (quirks->mailled)
278 interface->capability |= ACER_CAP_MAILLED;
279
280 if (quirks->brightness)
281 interface->capability |= ACER_CAP_BRIGHTNESS;
282 }
283
dmi_matched(const struct dmi_system_id * dmi)284 static int dmi_matched(const struct dmi_system_id *dmi)
285 {
286 quirks = dmi->driver_data;
287 return 1;
288 }
289
290 static struct quirk_entry quirk_unknown = {
291 };
292
293 static struct quirk_entry quirk_acer_aspire_1520 = {
294 .brightness = -1,
295 };
296
297 static struct quirk_entry quirk_acer_travelmate_2490 = {
298 .mailled = 1,
299 };
300
301 /* This AMW0 laptop has no bluetooth */
302 static struct quirk_entry quirk_medion_md_98300 = {
303 .wireless = 1,
304 };
305
306 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
307 .wireless = 2,
308 };
309
310 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
311 .wireless = 3,
312 };
313
314 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
315 static struct dmi_system_id __devinitdata acer_blacklist[] = {
316 {
317 .ident = "Acer Aspire One (SSD)",
318 .matches = {
319 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
320 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
321 },
322 },
323 {
324 .ident = "Acer Aspire One (HDD)",
325 .matches = {
326 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
327 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
328 },
329 },
330 {}
331 };
332
333 static struct dmi_system_id acer_quirks[] = {
334 {
335 .callback = dmi_matched,
336 .ident = "Acer Aspire 1360",
337 .matches = {
338 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
339 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
340 },
341 .driver_data = &quirk_acer_aspire_1520,
342 },
343 {
344 .callback = dmi_matched,
345 .ident = "Acer Aspire 1520",
346 .matches = {
347 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
348 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
349 },
350 .driver_data = &quirk_acer_aspire_1520,
351 },
352 {
353 .callback = dmi_matched,
354 .ident = "Acer Aspire 3100",
355 .matches = {
356 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
357 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
358 },
359 .driver_data = &quirk_acer_travelmate_2490,
360 },
361 {
362 .callback = dmi_matched,
363 .ident = "Acer Aspire 3610",
364 .matches = {
365 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
366 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
367 },
368 .driver_data = &quirk_acer_travelmate_2490,
369 },
370 {
371 .callback = dmi_matched,
372 .ident = "Acer Aspire 5100",
373 .matches = {
374 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
375 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
376 },
377 .driver_data = &quirk_acer_travelmate_2490,
378 },
379 {
380 .callback = dmi_matched,
381 .ident = "Acer Aspire 5610",
382 .matches = {
383 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
384 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
385 },
386 .driver_data = &quirk_acer_travelmate_2490,
387 },
388 {
389 .callback = dmi_matched,
390 .ident = "Acer Aspire 5630",
391 .matches = {
392 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
393 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
394 },
395 .driver_data = &quirk_acer_travelmate_2490,
396 },
397 {
398 .callback = dmi_matched,
399 .ident = "Acer Aspire 5650",
400 .matches = {
401 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
402 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
403 },
404 .driver_data = &quirk_acer_travelmate_2490,
405 },
406 {
407 .callback = dmi_matched,
408 .ident = "Acer Aspire 5680",
409 .matches = {
410 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
411 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
412 },
413 .driver_data = &quirk_acer_travelmate_2490,
414 },
415 {
416 .callback = dmi_matched,
417 .ident = "Acer Aspire 9110",
418 .matches = {
419 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
420 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
421 },
422 .driver_data = &quirk_acer_travelmate_2490,
423 },
424 {
425 .callback = dmi_matched,
426 .ident = "Acer TravelMate 2490",
427 .matches = {
428 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
429 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
430 },
431 .driver_data = &quirk_acer_travelmate_2490,
432 },
433 {
434 .callback = dmi_matched,
435 .ident = "Acer TravelMate 4200",
436 .matches = {
437 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
438 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
439 },
440 .driver_data = &quirk_acer_travelmate_2490,
441 },
442 {
443 .callback = dmi_matched,
444 .ident = "Fujitsu Siemens Amilo Li 1718",
445 .matches = {
446 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
447 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
448 },
449 .driver_data = &quirk_fujitsu_amilo_li_1718,
450 },
451 {
452 .callback = dmi_matched,
453 .ident = "Medion MD 98300",
454 .matches = {
455 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
456 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
457 },
458 .driver_data = &quirk_medion_md_98300,
459 },
460 {
461 .callback = dmi_matched,
462 .ident = "Lenovo Ideapad S205",
463 .matches = {
464 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
465 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
466 },
467 .driver_data = &quirk_lenovo_ideapad_s205,
468 },
469 {
470 .callback = dmi_matched,
471 .ident = "Lenovo 3000 N200",
472 .matches = {
473 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
474 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
475 },
476 .driver_data = &quirk_fujitsu_amilo_li_1718,
477 },
478 {}
479 };
480
481 /* Find which quirks are needed for a particular vendor/ model pair */
find_quirks(void)482 static void find_quirks(void)
483 {
484 if (!force_series) {
485 dmi_check_system(acer_quirks);
486 } else if (force_series == 2490) {
487 quirks = &quirk_acer_travelmate_2490;
488 }
489
490 if (quirks == NULL)
491 quirks = &quirk_unknown;
492
493 set_quirks();
494 }
495
496 /*
497 * General interface convenience methods
498 */
499
has_cap(u32 cap)500 static bool has_cap(u32 cap)
501 {
502 if ((interface->capability & cap) != 0)
503 return 1;
504
505 return 0;
506 }
507
508 /*
509 * AMW0 (V1) interface
510 */
511 struct wmab_args {
512 u32 eax;
513 u32 ebx;
514 u32 ecx;
515 u32 edx;
516 };
517
518 struct wmab_ret {
519 u32 eax;
520 u32 ebx;
521 u32 ecx;
522 u32 edx;
523 u32 eex;
524 };
525
wmab_execute(struct wmab_args * regbuf,struct acpi_buffer * result)526 static acpi_status wmab_execute(struct wmab_args *regbuf,
527 struct acpi_buffer *result)
528 {
529 struct acpi_buffer input;
530 acpi_status status;
531 input.length = sizeof(struct wmab_args);
532 input.pointer = (u8 *)regbuf;
533
534 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
535
536 return status;
537 }
538
AMW0_get_u32(u32 * value,u32 cap,struct wmi_interface * iface)539 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
540 struct wmi_interface *iface)
541 {
542 int err;
543 u8 result;
544
545 switch (cap) {
546 case ACER_CAP_MAILLED:
547 switch (quirks->mailled) {
548 default:
549 err = ec_read(0xA, &result);
550 if (err)
551 return AE_ERROR;
552 *value = (result >> 7) & 0x1;
553 return AE_OK;
554 }
555 break;
556 case ACER_CAP_WIRELESS:
557 switch (quirks->wireless) {
558 case 1:
559 err = ec_read(0x7B, &result);
560 if (err)
561 return AE_ERROR;
562 *value = result & 0x1;
563 return AE_OK;
564 case 2:
565 err = ec_read(0x71, &result);
566 if (err)
567 return AE_ERROR;
568 *value = result & 0x1;
569 return AE_OK;
570 case 3:
571 err = ec_read(0x78, &result);
572 if (err)
573 return AE_ERROR;
574 *value = result & 0x1;
575 return AE_OK;
576 default:
577 err = ec_read(0xA, &result);
578 if (err)
579 return AE_ERROR;
580 *value = (result >> 2) & 0x1;
581 return AE_OK;
582 }
583 break;
584 case ACER_CAP_BLUETOOTH:
585 switch (quirks->bluetooth) {
586 default:
587 err = ec_read(0xA, &result);
588 if (err)
589 return AE_ERROR;
590 *value = (result >> 4) & 0x1;
591 return AE_OK;
592 }
593 break;
594 case ACER_CAP_BRIGHTNESS:
595 switch (quirks->brightness) {
596 default:
597 err = ec_read(0x83, &result);
598 if (err)
599 return AE_ERROR;
600 *value = result;
601 return AE_OK;
602 }
603 break;
604 default:
605 return AE_ERROR;
606 }
607 return AE_OK;
608 }
609
AMW0_set_u32(u32 value,u32 cap,struct wmi_interface * iface)610 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
611 {
612 struct wmab_args args;
613
614 args.eax = ACER_AMW0_WRITE;
615 args.ebx = value ? (1<<8) : 0;
616 args.ecx = args.edx = 0;
617
618 switch (cap) {
619 case ACER_CAP_MAILLED:
620 if (value > 1)
621 return AE_BAD_PARAMETER;
622 args.ebx |= ACER_AMW0_MAILLED_MASK;
623 break;
624 case ACER_CAP_WIRELESS:
625 if (value > 1)
626 return AE_BAD_PARAMETER;
627 args.ebx |= ACER_AMW0_WIRELESS_MASK;
628 break;
629 case ACER_CAP_BLUETOOTH:
630 if (value > 1)
631 return AE_BAD_PARAMETER;
632 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
633 break;
634 case ACER_CAP_BRIGHTNESS:
635 if (value > max_brightness)
636 return AE_BAD_PARAMETER;
637 switch (quirks->brightness) {
638 default:
639 return ec_write(0x83, value);
640 break;
641 }
642 default:
643 return AE_ERROR;
644 }
645
646 /* Actually do the set */
647 return wmab_execute(&args, NULL);
648 }
649
AMW0_find_mailled(void)650 static acpi_status AMW0_find_mailled(void)
651 {
652 struct wmab_args args;
653 struct wmab_ret ret;
654 acpi_status status = AE_OK;
655 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
656 union acpi_object *obj;
657
658 args.eax = 0x86;
659 args.ebx = args.ecx = args.edx = 0;
660
661 status = wmab_execute(&args, &out);
662 if (ACPI_FAILURE(status))
663 return status;
664
665 obj = (union acpi_object *) out.pointer;
666 if (obj && obj->type == ACPI_TYPE_BUFFER &&
667 obj->buffer.length == sizeof(struct wmab_ret)) {
668 ret = *((struct wmab_ret *) obj->buffer.pointer);
669 } else {
670 kfree(out.pointer);
671 return AE_ERROR;
672 }
673
674 if (ret.eex & 0x1)
675 interface->capability |= ACER_CAP_MAILLED;
676
677 kfree(out.pointer);
678
679 return AE_OK;
680 }
681
682 static int AMW0_set_cap_acpi_check_device_found;
683
AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,u32 level,void * context,void ** retval)684 static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
685 u32 level, void *context, void **retval)
686 {
687 AMW0_set_cap_acpi_check_device_found = 1;
688 return AE_OK;
689 }
690
691 static const struct acpi_device_id norfkill_ids[] = {
692 { "VPC2004", 0},
693 { "IBM0068", 0},
694 { "LEN0068", 0},
695 { "", 0},
696 };
697
AMW0_set_cap_acpi_check_device(void)698 static int AMW0_set_cap_acpi_check_device(void)
699 {
700 const struct acpi_device_id *id;
701
702 for (id = norfkill_ids; id->id[0]; id++)
703 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
704 NULL, NULL);
705 return AMW0_set_cap_acpi_check_device_found;
706 }
707
AMW0_set_capabilities(void)708 static acpi_status AMW0_set_capabilities(void)
709 {
710 struct wmab_args args;
711 struct wmab_ret ret;
712 acpi_status status;
713 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
714 union acpi_object *obj;
715
716 /*
717 * On laptops with this strange GUID (non Acer), normal probing doesn't
718 * work.
719 */
720 if (wmi_has_guid(AMW0_GUID2)) {
721 if ((quirks != &quirk_unknown) ||
722 !AMW0_set_cap_acpi_check_device())
723 interface->capability |= ACER_CAP_WIRELESS;
724 return AE_OK;
725 }
726
727 args.eax = ACER_AMW0_WRITE;
728 args.ecx = args.edx = 0;
729
730 args.ebx = 0xa2 << 8;
731 args.ebx |= ACER_AMW0_WIRELESS_MASK;
732
733 status = wmab_execute(&args, &out);
734 if (ACPI_FAILURE(status))
735 return status;
736
737 obj = out.pointer;
738 if (obj && obj->type == ACPI_TYPE_BUFFER &&
739 obj->buffer.length == sizeof(struct wmab_ret)) {
740 ret = *((struct wmab_ret *) obj->buffer.pointer);
741 } else {
742 status = AE_ERROR;
743 goto out;
744 }
745
746 if (ret.eax & 0x1)
747 interface->capability |= ACER_CAP_WIRELESS;
748
749 args.ebx = 2 << 8;
750 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
751
752 /*
753 * It's ok to use existing buffer for next wmab_execute call.
754 * But we need to kfree(out.pointer) if next wmab_execute fail.
755 */
756 status = wmab_execute(&args, &out);
757 if (ACPI_FAILURE(status))
758 goto out;
759
760 obj = (union acpi_object *) out.pointer;
761 if (obj && obj->type == ACPI_TYPE_BUFFER
762 && obj->buffer.length == sizeof(struct wmab_ret)) {
763 ret = *((struct wmab_ret *) obj->buffer.pointer);
764 } else {
765 status = AE_ERROR;
766 goto out;
767 }
768
769 if (ret.eax & 0x1)
770 interface->capability |= ACER_CAP_BLUETOOTH;
771
772 /*
773 * This appears to be safe to enable, since all Wistron based laptops
774 * appear to use the same EC register for brightness, even if they
775 * differ for wireless, etc
776 */
777 if (quirks->brightness >= 0)
778 interface->capability |= ACER_CAP_BRIGHTNESS;
779
780 status = AE_OK;
781 out:
782 kfree(out.pointer);
783 return status;
784 }
785
786 static struct wmi_interface AMW0_interface = {
787 .type = ACER_AMW0,
788 };
789
790 static struct wmi_interface AMW0_V2_interface = {
791 .type = ACER_AMW0_V2,
792 };
793
794 /*
795 * New interface (The WMID interface)
796 */
797 static acpi_status
WMI_execute_u32(u32 method_id,u32 in,u32 * out)798 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
799 {
800 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
801 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
802 union acpi_object *obj;
803 u32 tmp;
804 acpi_status status;
805
806 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
807
808 if (ACPI_FAILURE(status))
809 return status;
810
811 obj = (union acpi_object *) result.pointer;
812 if (obj && obj->type == ACPI_TYPE_BUFFER &&
813 (obj->buffer.length == sizeof(u32) ||
814 obj->buffer.length == sizeof(u64))) {
815 tmp = *((u32 *) obj->buffer.pointer);
816 } else if (obj->type == ACPI_TYPE_INTEGER) {
817 tmp = (u32) obj->integer.value;
818 } else {
819 tmp = 0;
820 }
821
822 if (out)
823 *out = tmp;
824
825 kfree(result.pointer);
826
827 return status;
828 }
829
WMID_get_u32(u32 * value,u32 cap,struct wmi_interface * iface)830 static acpi_status WMID_get_u32(u32 *value, u32 cap,
831 struct wmi_interface *iface)
832 {
833 acpi_status status;
834 u8 tmp;
835 u32 result, method_id = 0;
836
837 switch (cap) {
838 case ACER_CAP_WIRELESS:
839 method_id = ACER_WMID_GET_WIRELESS_METHODID;
840 break;
841 case ACER_CAP_BLUETOOTH:
842 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
843 break;
844 case ACER_CAP_BRIGHTNESS:
845 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
846 break;
847 case ACER_CAP_THREEG:
848 method_id = ACER_WMID_GET_THREEG_METHODID;
849 break;
850 case ACER_CAP_MAILLED:
851 if (quirks->mailled == 1) {
852 ec_read(0x9f, &tmp);
853 *value = tmp & 0x1;
854 return 0;
855 }
856 default:
857 return AE_ERROR;
858 }
859 status = WMI_execute_u32(method_id, 0, &result);
860
861 if (ACPI_SUCCESS(status))
862 *value = (u8)result;
863
864 return status;
865 }
866
WMID_set_u32(u32 value,u32 cap,struct wmi_interface * iface)867 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
868 {
869 u32 method_id = 0;
870 char param;
871
872 switch (cap) {
873 case ACER_CAP_BRIGHTNESS:
874 if (value > max_brightness)
875 return AE_BAD_PARAMETER;
876 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
877 break;
878 case ACER_CAP_WIRELESS:
879 if (value > 1)
880 return AE_BAD_PARAMETER;
881 method_id = ACER_WMID_SET_WIRELESS_METHODID;
882 break;
883 case ACER_CAP_BLUETOOTH:
884 if (value > 1)
885 return AE_BAD_PARAMETER;
886 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
887 break;
888 case ACER_CAP_THREEG:
889 if (value > 1)
890 return AE_BAD_PARAMETER;
891 method_id = ACER_WMID_SET_THREEG_METHODID;
892 break;
893 case ACER_CAP_MAILLED:
894 if (value > 1)
895 return AE_BAD_PARAMETER;
896 if (quirks->mailled == 1) {
897 param = value ? 0x92 : 0x93;
898 i8042_lock_chip();
899 i8042_command(¶m, 0x1059);
900 i8042_unlock_chip();
901 return 0;
902 }
903 break;
904 default:
905 return AE_ERROR;
906 }
907 return WMI_execute_u32(method_id, (u32)value, NULL);
908 }
909
wmid3_get_device_status(u32 * value,u16 device)910 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
911 {
912 struct wmid3_gds_return_value return_value;
913 acpi_status status;
914 union acpi_object *obj;
915 struct wmid3_gds_input_param params = {
916 .function_num = 0x1,
917 .hotkey_number = 0x01,
918 .devices = device,
919 };
920 struct acpi_buffer input = {
921 sizeof(struct wmid3_gds_input_param),
922 ¶ms
923 };
924 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
925
926 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
927 if (ACPI_FAILURE(status))
928 return status;
929
930 obj = output.pointer;
931
932 if (!obj)
933 return AE_ERROR;
934 else if (obj->type != ACPI_TYPE_BUFFER) {
935 kfree(obj);
936 return AE_ERROR;
937 }
938 if (obj->buffer.length != 8) {
939 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
940 kfree(obj);
941 return AE_ERROR;
942 }
943
944 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
945 kfree(obj);
946
947 if (return_value.error_code || return_value.ec_return_value)
948 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
949 device,
950 return_value.error_code,
951 return_value.ec_return_value);
952 else
953 *value = !!(return_value.devices & device);
954
955 return status;
956 }
957
wmid_v2_get_u32(u32 * value,u32 cap)958 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
959 {
960 u16 device;
961
962 switch (cap) {
963 case ACER_CAP_WIRELESS:
964 device = ACER_WMID3_GDS_WIRELESS;
965 break;
966 case ACER_CAP_BLUETOOTH:
967 device = ACER_WMID3_GDS_BLUETOOTH;
968 break;
969 case ACER_CAP_THREEG:
970 device = ACER_WMID3_GDS_THREEG;
971 break;
972 default:
973 return AE_ERROR;
974 }
975 return wmid3_get_device_status(value, device);
976 }
977
wmid3_set_device_status(u32 value,u16 device)978 static acpi_status wmid3_set_device_status(u32 value, u16 device)
979 {
980 struct wmid3_gds_return_value return_value;
981 acpi_status status;
982 union acpi_object *obj;
983 u16 devices;
984 struct wmid3_gds_input_param params = {
985 .function_num = 0x1,
986 .hotkey_number = 0x01,
987 .devices = commun_func_bitmap,
988 };
989 struct acpi_buffer input = {
990 sizeof(struct wmid3_gds_input_param),
991 ¶ms
992 };
993 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
994 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
995
996 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
997 if (ACPI_FAILURE(status))
998 return status;
999
1000 obj = output.pointer;
1001
1002 if (!obj)
1003 return AE_ERROR;
1004 else if (obj->type != ACPI_TYPE_BUFFER) {
1005 kfree(obj);
1006 return AE_ERROR;
1007 }
1008 if (obj->buffer.length != 8) {
1009 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1010 kfree(obj);
1011 return AE_ERROR;
1012 }
1013
1014 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1015 kfree(obj);
1016
1017 if (return_value.error_code || return_value.ec_return_value) {
1018 pr_warning("Get Current Device Status failed: "
1019 "0x%x - 0x%x\n", return_value.error_code,
1020 return_value.ec_return_value);
1021 return status;
1022 }
1023
1024 devices = return_value.devices;
1025 params.function_num = 0x2;
1026 params.hotkey_number = 0x01;
1027 params.devices = (value) ? (devices | device) : (devices & ~device);
1028
1029 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
1030 if (ACPI_FAILURE(status))
1031 return status;
1032
1033 obj = output2.pointer;
1034
1035 if (!obj)
1036 return AE_ERROR;
1037 else if (obj->type != ACPI_TYPE_BUFFER) {
1038 kfree(obj);
1039 return AE_ERROR;
1040 }
1041 if (obj->buffer.length != 4) {
1042 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1043 kfree(obj);
1044 return AE_ERROR;
1045 }
1046
1047 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1048 kfree(obj);
1049
1050 if (return_value.error_code || return_value.ec_return_value)
1051 pr_warning("Set Device Status failed: "
1052 "0x%x - 0x%x\n", return_value.error_code,
1053 return_value.ec_return_value);
1054
1055 return status;
1056 }
1057
wmid_v2_set_u32(u32 value,u32 cap)1058 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1059 {
1060 u16 device;
1061
1062 switch (cap) {
1063 case ACER_CAP_WIRELESS:
1064 device = ACER_WMID3_GDS_WIRELESS;
1065 break;
1066 case ACER_CAP_BLUETOOTH:
1067 device = ACER_WMID3_GDS_BLUETOOTH;
1068 break;
1069 case ACER_CAP_THREEG:
1070 device = ACER_WMID3_GDS_THREEG;
1071 break;
1072 default:
1073 return AE_ERROR;
1074 }
1075 return wmid3_set_device_status(value, device);
1076 }
1077
type_aa_dmi_decode(const struct dmi_header * header,void * dummy)1078 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1079 {
1080 struct hotkey_function_type_aa *type_aa;
1081
1082 /* We are looking for OEM-specific Type AAh */
1083 if (header->type != 0xAA)
1084 return;
1085
1086 has_type_aa = true;
1087 type_aa = (struct hotkey_function_type_aa *) header;
1088
1089 pr_info("Function bitmap for Communication Button: 0x%x\n",
1090 type_aa->commun_func_bitmap);
1091 commun_func_bitmap = type_aa->commun_func_bitmap;
1092
1093 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1094 interface->capability |= ACER_CAP_WIRELESS;
1095 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1096 interface->capability |= ACER_CAP_THREEG;
1097 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1098 interface->capability |= ACER_CAP_BLUETOOTH;
1099 }
1100
WMID_set_capabilities(void)1101 static acpi_status WMID_set_capabilities(void)
1102 {
1103 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1104 union acpi_object *obj;
1105 acpi_status status;
1106 u32 devices;
1107
1108 status = wmi_query_block(WMID_GUID2, 1, &out);
1109 if (ACPI_FAILURE(status))
1110 return status;
1111
1112 obj = (union acpi_object *) out.pointer;
1113 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1114 (obj->buffer.length == sizeof(u32) ||
1115 obj->buffer.length == sizeof(u64))) {
1116 devices = *((u32 *) obj->buffer.pointer);
1117 } else if (obj->type == ACPI_TYPE_INTEGER) {
1118 devices = (u32) obj->integer.value;
1119 } else {
1120 kfree(out.pointer);
1121 return AE_ERROR;
1122 }
1123
1124 pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1125 if (devices & 0x07)
1126 interface->capability |= ACER_CAP_WIRELESS;
1127 if (devices & 0x40)
1128 interface->capability |= ACER_CAP_THREEG;
1129 if (devices & 0x10)
1130 interface->capability |= ACER_CAP_BLUETOOTH;
1131
1132 if (!(devices & 0x20))
1133 max_brightness = 0x9;
1134
1135 kfree(out.pointer);
1136 return status;
1137 }
1138
1139 static struct wmi_interface wmid_interface = {
1140 .type = ACER_WMID,
1141 };
1142
1143 static struct wmi_interface wmid_v2_interface = {
1144 .type = ACER_WMID_v2,
1145 };
1146
1147 /*
1148 * Generic Device (interface-independent)
1149 */
1150
get_u32(u32 * value,u32 cap)1151 static acpi_status get_u32(u32 *value, u32 cap)
1152 {
1153 acpi_status status = AE_ERROR;
1154
1155 switch (interface->type) {
1156 case ACER_AMW0:
1157 status = AMW0_get_u32(value, cap, interface);
1158 break;
1159 case ACER_AMW0_V2:
1160 if (cap == ACER_CAP_MAILLED) {
1161 status = AMW0_get_u32(value, cap, interface);
1162 break;
1163 }
1164 case ACER_WMID:
1165 status = WMID_get_u32(value, cap, interface);
1166 break;
1167 case ACER_WMID_v2:
1168 if (cap & (ACER_CAP_WIRELESS |
1169 ACER_CAP_BLUETOOTH |
1170 ACER_CAP_THREEG))
1171 status = wmid_v2_get_u32(value, cap);
1172 else if (wmi_has_guid(WMID_GUID2))
1173 status = WMID_get_u32(value, cap, interface);
1174 break;
1175 }
1176
1177 return status;
1178 }
1179
set_u32(u32 value,u32 cap)1180 static acpi_status set_u32(u32 value, u32 cap)
1181 {
1182 acpi_status status;
1183
1184 if (interface->capability & cap) {
1185 switch (interface->type) {
1186 case ACER_AMW0:
1187 return AMW0_set_u32(value, cap, interface);
1188 case ACER_AMW0_V2:
1189 if (cap == ACER_CAP_MAILLED)
1190 return AMW0_set_u32(value, cap, interface);
1191
1192 /*
1193 * On some models, some WMID methods don't toggle
1194 * properly. For those cases, we want to run the AMW0
1195 * method afterwards to be certain we've really toggled
1196 * the device state.
1197 */
1198 if (cap == ACER_CAP_WIRELESS ||
1199 cap == ACER_CAP_BLUETOOTH) {
1200 status = WMID_set_u32(value, cap, interface);
1201 if (ACPI_FAILURE(status))
1202 return status;
1203
1204 return AMW0_set_u32(value, cap, interface);
1205 }
1206 case ACER_WMID:
1207 return WMID_set_u32(value, cap, interface);
1208 case ACER_WMID_v2:
1209 if (cap & (ACER_CAP_WIRELESS |
1210 ACER_CAP_BLUETOOTH |
1211 ACER_CAP_THREEG))
1212 return wmid_v2_set_u32(value, cap);
1213 else if (wmi_has_guid(WMID_GUID2))
1214 return WMID_set_u32(value, cap, interface);
1215 default:
1216 return AE_BAD_PARAMETER;
1217 }
1218 }
1219 return AE_BAD_PARAMETER;
1220 }
1221
acer_commandline_init(void)1222 static void __init acer_commandline_init(void)
1223 {
1224 /*
1225 * These will all fail silently if the value given is invalid, or the
1226 * capability isn't available on the given interface
1227 */
1228 if (mailled >= 0)
1229 set_u32(mailled, ACER_CAP_MAILLED);
1230 if (!has_type_aa && threeg >= 0)
1231 set_u32(threeg, ACER_CAP_THREEG);
1232 if (brightness >= 0)
1233 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1234 }
1235
1236 /*
1237 * LED device (Mail LED only, no other LEDs known yet)
1238 */
mail_led_set(struct led_classdev * led_cdev,enum led_brightness value)1239 static void mail_led_set(struct led_classdev *led_cdev,
1240 enum led_brightness value)
1241 {
1242 set_u32(value, ACER_CAP_MAILLED);
1243 }
1244
1245 static struct led_classdev mail_led = {
1246 .name = "acer-wmi::mail",
1247 .brightness_set = mail_led_set,
1248 };
1249
acer_led_init(struct device * dev)1250 static int __devinit acer_led_init(struct device *dev)
1251 {
1252 return led_classdev_register(dev, &mail_led);
1253 }
1254
acer_led_exit(void)1255 static void acer_led_exit(void)
1256 {
1257 set_u32(LED_OFF, ACER_CAP_MAILLED);
1258 led_classdev_unregister(&mail_led);
1259 }
1260
1261 /*
1262 * Backlight device
1263 */
1264 static struct backlight_device *acer_backlight_device;
1265
read_brightness(struct backlight_device * bd)1266 static int read_brightness(struct backlight_device *bd)
1267 {
1268 u32 value;
1269 get_u32(&value, ACER_CAP_BRIGHTNESS);
1270 return value;
1271 }
1272
update_bl_status(struct backlight_device * bd)1273 static int update_bl_status(struct backlight_device *bd)
1274 {
1275 int intensity = bd->props.brightness;
1276
1277 if (bd->props.power != FB_BLANK_UNBLANK)
1278 intensity = 0;
1279 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1280 intensity = 0;
1281
1282 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1283
1284 return 0;
1285 }
1286
1287 static const struct backlight_ops acer_bl_ops = {
1288 .get_brightness = read_brightness,
1289 .update_status = update_bl_status,
1290 };
1291
acer_backlight_init(struct device * dev)1292 static int __devinit acer_backlight_init(struct device *dev)
1293 {
1294 struct backlight_properties props;
1295 struct backlight_device *bd;
1296
1297 memset(&props, 0, sizeof(struct backlight_properties));
1298 props.type = BACKLIGHT_PLATFORM;
1299 props.max_brightness = max_brightness;
1300 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1301 &props);
1302 if (IS_ERR(bd)) {
1303 pr_err("Could not register Acer backlight device\n");
1304 acer_backlight_device = NULL;
1305 return PTR_ERR(bd);
1306 }
1307
1308 acer_backlight_device = bd;
1309
1310 bd->props.power = FB_BLANK_UNBLANK;
1311 bd->props.brightness = read_brightness(bd);
1312 backlight_update_status(bd);
1313 return 0;
1314 }
1315
acer_backlight_exit(void)1316 static void acer_backlight_exit(void)
1317 {
1318 backlight_device_unregister(acer_backlight_device);
1319 }
1320
1321 /*
1322 * Rfkill devices
1323 */
1324 static void acer_rfkill_update(struct work_struct *ignored);
1325 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
acer_rfkill_update(struct work_struct * ignored)1326 static void acer_rfkill_update(struct work_struct *ignored)
1327 {
1328 u32 state;
1329 acpi_status status;
1330
1331 if (has_cap(ACER_CAP_WIRELESS)) {
1332 status = get_u32(&state, ACER_CAP_WIRELESS);
1333 if (ACPI_SUCCESS(status)) {
1334 if (quirks->wireless == 3)
1335 rfkill_set_hw_state(wireless_rfkill, !state);
1336 else
1337 rfkill_set_sw_state(wireless_rfkill, !state);
1338 }
1339 }
1340
1341 if (has_cap(ACER_CAP_BLUETOOTH)) {
1342 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1343 if (ACPI_SUCCESS(status))
1344 rfkill_set_sw_state(bluetooth_rfkill, !state);
1345 }
1346
1347 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1348 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1349 if (ACPI_SUCCESS(status))
1350 rfkill_set_sw_state(threeg_rfkill, !state);
1351 }
1352
1353 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1354 }
1355
acer_rfkill_set(void * data,bool blocked)1356 static int acer_rfkill_set(void *data, bool blocked)
1357 {
1358 acpi_status status;
1359 u32 cap = (unsigned long)data;
1360
1361 if (rfkill_inited) {
1362 status = set_u32(!blocked, cap);
1363 if (ACPI_FAILURE(status))
1364 return -ENODEV;
1365 }
1366
1367 return 0;
1368 }
1369
1370 static const struct rfkill_ops acer_rfkill_ops = {
1371 .set_block = acer_rfkill_set,
1372 };
1373
acer_rfkill_register(struct device * dev,enum rfkill_type type,char * name,u32 cap)1374 static struct rfkill *acer_rfkill_register(struct device *dev,
1375 enum rfkill_type type,
1376 char *name, u32 cap)
1377 {
1378 int err;
1379 struct rfkill *rfkill_dev;
1380 u32 state;
1381 acpi_status status;
1382
1383 rfkill_dev = rfkill_alloc(name, dev, type,
1384 &acer_rfkill_ops,
1385 (void *)(unsigned long)cap);
1386 if (!rfkill_dev)
1387 return ERR_PTR(-ENOMEM);
1388
1389 status = get_u32(&state, cap);
1390
1391 err = rfkill_register(rfkill_dev);
1392 if (err) {
1393 rfkill_destroy(rfkill_dev);
1394 return ERR_PTR(err);
1395 }
1396
1397 if (ACPI_SUCCESS(status))
1398 rfkill_set_sw_state(rfkill_dev, !state);
1399
1400 return rfkill_dev;
1401 }
1402
acer_rfkill_init(struct device * dev)1403 static int acer_rfkill_init(struct device *dev)
1404 {
1405 int err;
1406
1407 if (has_cap(ACER_CAP_WIRELESS)) {
1408 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1409 "acer-wireless", ACER_CAP_WIRELESS);
1410 if (IS_ERR(wireless_rfkill)) {
1411 err = PTR_ERR(wireless_rfkill);
1412 goto error_wireless;
1413 }
1414 }
1415
1416 if (has_cap(ACER_CAP_BLUETOOTH)) {
1417 bluetooth_rfkill = acer_rfkill_register(dev,
1418 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1419 ACER_CAP_BLUETOOTH);
1420 if (IS_ERR(bluetooth_rfkill)) {
1421 err = PTR_ERR(bluetooth_rfkill);
1422 goto error_bluetooth;
1423 }
1424 }
1425
1426 if (has_cap(ACER_CAP_THREEG)) {
1427 threeg_rfkill = acer_rfkill_register(dev,
1428 RFKILL_TYPE_WWAN, "acer-threeg",
1429 ACER_CAP_THREEG);
1430 if (IS_ERR(threeg_rfkill)) {
1431 err = PTR_ERR(threeg_rfkill);
1432 goto error_threeg;
1433 }
1434 }
1435
1436 rfkill_inited = true;
1437
1438 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1439 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1440 schedule_delayed_work(&acer_rfkill_work,
1441 round_jiffies_relative(HZ));
1442
1443 return 0;
1444
1445 error_threeg:
1446 if (has_cap(ACER_CAP_BLUETOOTH)) {
1447 rfkill_unregister(bluetooth_rfkill);
1448 rfkill_destroy(bluetooth_rfkill);
1449 }
1450 error_bluetooth:
1451 if (has_cap(ACER_CAP_WIRELESS)) {
1452 rfkill_unregister(wireless_rfkill);
1453 rfkill_destroy(wireless_rfkill);
1454 }
1455 error_wireless:
1456 return err;
1457 }
1458
acer_rfkill_exit(void)1459 static void acer_rfkill_exit(void)
1460 {
1461 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1462 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1463 cancel_delayed_work_sync(&acer_rfkill_work);
1464
1465 if (has_cap(ACER_CAP_WIRELESS)) {
1466 rfkill_unregister(wireless_rfkill);
1467 rfkill_destroy(wireless_rfkill);
1468 }
1469
1470 if (has_cap(ACER_CAP_BLUETOOTH)) {
1471 rfkill_unregister(bluetooth_rfkill);
1472 rfkill_destroy(bluetooth_rfkill);
1473 }
1474
1475 if (has_cap(ACER_CAP_THREEG)) {
1476 rfkill_unregister(threeg_rfkill);
1477 rfkill_destroy(threeg_rfkill);
1478 }
1479 return;
1480 }
1481
1482 /*
1483 * sysfs interface
1484 */
show_bool_threeg(struct device * dev,struct device_attribute * attr,char * buf)1485 static ssize_t show_bool_threeg(struct device *dev,
1486 struct device_attribute *attr, char *buf)
1487 {
1488 u32 result; \
1489 acpi_status status;
1490
1491 pr_info("This threeg sysfs will be removed in 2012"
1492 " - used by: %s\n", current->comm);
1493 status = get_u32(&result, ACER_CAP_THREEG);
1494 if (ACPI_SUCCESS(status))
1495 return sprintf(buf, "%u\n", result);
1496 return sprintf(buf, "Read error\n");
1497 }
1498
set_bool_threeg(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1499 static ssize_t set_bool_threeg(struct device *dev,
1500 struct device_attribute *attr, const char *buf, size_t count)
1501 {
1502 u32 tmp = simple_strtoul(buf, NULL, 10);
1503 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1504 pr_info("This threeg sysfs will be removed in 2012"
1505 " - used by: %s\n", current->comm);
1506 if (ACPI_FAILURE(status))
1507 return -EINVAL;
1508 return count;
1509 }
1510 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1511 set_bool_threeg);
1512
show_interface(struct device * dev,struct device_attribute * attr,char * buf)1513 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1514 char *buf)
1515 {
1516 pr_info("This interface sysfs will be removed in 2012"
1517 " - used by: %s\n", current->comm);
1518 switch (interface->type) {
1519 case ACER_AMW0:
1520 return sprintf(buf, "AMW0\n");
1521 case ACER_AMW0_V2:
1522 return sprintf(buf, "AMW0 v2\n");
1523 case ACER_WMID:
1524 return sprintf(buf, "WMID\n");
1525 case ACER_WMID_v2:
1526 return sprintf(buf, "WMID v2\n");
1527 default:
1528 return sprintf(buf, "Error!\n");
1529 }
1530 }
1531
1532 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1533
acer_wmi_notify(u32 value,void * context)1534 static void acer_wmi_notify(u32 value, void *context)
1535 {
1536 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1537 union acpi_object *obj;
1538 struct event_return_value return_value;
1539 acpi_status status;
1540 u16 device_state;
1541 const struct key_entry *key;
1542
1543 status = wmi_get_event_data(value, &response);
1544 if (status != AE_OK) {
1545 pr_warn("bad event status 0x%x\n", status);
1546 return;
1547 }
1548
1549 obj = (union acpi_object *)response.pointer;
1550
1551 if (!obj)
1552 return;
1553 if (obj->type != ACPI_TYPE_BUFFER) {
1554 pr_warn("Unknown response received %d\n", obj->type);
1555 kfree(obj);
1556 return;
1557 }
1558 if (obj->buffer.length != 8) {
1559 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1560 kfree(obj);
1561 return;
1562 }
1563
1564 return_value = *((struct event_return_value *)obj->buffer.pointer);
1565 kfree(obj);
1566
1567 switch (return_value.function) {
1568 case WMID_HOTKEY_EVENT:
1569 device_state = return_value.device_state;
1570 pr_debug("device state: 0x%x\n", device_state);
1571
1572 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1573 return_value.key_num);
1574 if (!key) {
1575 pr_warn("Unknown key number - 0x%x\n",
1576 return_value.key_num);
1577 } else {
1578 switch (key->keycode) {
1579 case KEY_WLAN:
1580 case KEY_BLUETOOTH:
1581 if (has_cap(ACER_CAP_WIRELESS))
1582 rfkill_set_sw_state(wireless_rfkill,
1583 !(device_state & ACER_WMID3_GDS_WIRELESS));
1584 if (has_cap(ACER_CAP_THREEG))
1585 rfkill_set_sw_state(threeg_rfkill,
1586 !(device_state & ACER_WMID3_GDS_THREEG));
1587 if (has_cap(ACER_CAP_BLUETOOTH))
1588 rfkill_set_sw_state(bluetooth_rfkill,
1589 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1590 break;
1591 }
1592 sparse_keymap_report_entry(acer_wmi_input_dev, key,
1593 1, true);
1594 }
1595 break;
1596 default:
1597 pr_warn("Unknown function number - %d - %d\n",
1598 return_value.function, return_value.key_num);
1599 break;
1600 }
1601 }
1602
1603 static acpi_status
wmid3_set_lm_mode(struct lm_input_params * params,struct lm_return_value * return_value)1604 wmid3_set_lm_mode(struct lm_input_params *params,
1605 struct lm_return_value *return_value)
1606 {
1607 acpi_status status;
1608 union acpi_object *obj;
1609
1610 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1611 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1612
1613 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1614 if (ACPI_FAILURE(status))
1615 return status;
1616
1617 obj = output.pointer;
1618
1619 if (!obj)
1620 return AE_ERROR;
1621 else if (obj->type != ACPI_TYPE_BUFFER) {
1622 kfree(obj);
1623 return AE_ERROR;
1624 }
1625 if (obj->buffer.length != 4) {
1626 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1627 kfree(obj);
1628 return AE_ERROR;
1629 }
1630
1631 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1632 kfree(obj);
1633
1634 return status;
1635 }
1636
acer_wmi_enable_ec_raw(void)1637 static int acer_wmi_enable_ec_raw(void)
1638 {
1639 struct lm_return_value return_value;
1640 acpi_status status;
1641 struct lm_input_params params = {
1642 .function_num = 0x1,
1643 .commun_devices = 0xFFFF,
1644 .devices = 0xFFFF,
1645 .lm_status = 0x00, /* Launch Manager Deactive */
1646 };
1647
1648 status = wmid3_set_lm_mode(¶ms, &return_value);
1649
1650 if (return_value.error_code || return_value.ec_return_value)
1651 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1652 return_value.error_code,
1653 return_value.ec_return_value);
1654 else
1655 pr_info("Enabled EC raw mode\n");
1656
1657 return status;
1658 }
1659
acer_wmi_enable_lm(void)1660 static int acer_wmi_enable_lm(void)
1661 {
1662 struct lm_return_value return_value;
1663 acpi_status status;
1664 struct lm_input_params params = {
1665 .function_num = 0x1,
1666 .commun_devices = 0xFFFF,
1667 .devices = 0xFFFF,
1668 .lm_status = 0x01, /* Launch Manager Active */
1669 };
1670
1671 status = wmid3_set_lm_mode(¶ms, &return_value);
1672
1673 if (return_value.error_code || return_value.ec_return_value)
1674 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1675 return_value.error_code,
1676 return_value.ec_return_value);
1677
1678 return status;
1679 }
1680
acer_wmi_input_setup(void)1681 static int __init acer_wmi_input_setup(void)
1682 {
1683 acpi_status status;
1684 int err;
1685
1686 acer_wmi_input_dev = input_allocate_device();
1687 if (!acer_wmi_input_dev)
1688 return -ENOMEM;
1689
1690 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1691 acer_wmi_input_dev->phys = "wmi/input0";
1692 acer_wmi_input_dev->id.bustype = BUS_HOST;
1693
1694 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1695 if (err)
1696 goto err_free_dev;
1697
1698 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1699 acer_wmi_notify, NULL);
1700 if (ACPI_FAILURE(status)) {
1701 err = -EIO;
1702 goto err_free_keymap;
1703 }
1704
1705 err = input_register_device(acer_wmi_input_dev);
1706 if (err)
1707 goto err_uninstall_notifier;
1708
1709 return 0;
1710
1711 err_uninstall_notifier:
1712 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1713 err_free_keymap:
1714 sparse_keymap_free(acer_wmi_input_dev);
1715 err_free_dev:
1716 input_free_device(acer_wmi_input_dev);
1717 return err;
1718 }
1719
acer_wmi_input_destroy(void)1720 static void acer_wmi_input_destroy(void)
1721 {
1722 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1723 sparse_keymap_free(acer_wmi_input_dev);
1724 input_unregister_device(acer_wmi_input_dev);
1725 }
1726
1727 /*
1728 * debugfs functions
1729 */
get_wmid_devices(void)1730 static u32 get_wmid_devices(void)
1731 {
1732 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1733 union acpi_object *obj;
1734 acpi_status status;
1735 u32 devices = 0;
1736
1737 status = wmi_query_block(WMID_GUID2, 1, &out);
1738 if (ACPI_FAILURE(status))
1739 return 0;
1740
1741 obj = (union acpi_object *) out.pointer;
1742 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1743 (obj->buffer.length == sizeof(u32) ||
1744 obj->buffer.length == sizeof(u64))) {
1745 devices = *((u32 *) obj->buffer.pointer);
1746 } else if (obj->type == ACPI_TYPE_INTEGER) {
1747 devices = (u32) obj->integer.value;
1748 }
1749
1750 kfree(out.pointer);
1751 return devices;
1752 }
1753
1754 /*
1755 * Platform device
1756 */
acer_platform_probe(struct platform_device * device)1757 static int __devinit acer_platform_probe(struct platform_device *device)
1758 {
1759 int err;
1760
1761 if (has_cap(ACER_CAP_MAILLED)) {
1762 err = acer_led_init(&device->dev);
1763 if (err)
1764 goto error_mailled;
1765 }
1766
1767 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1768 err = acer_backlight_init(&device->dev);
1769 if (err)
1770 goto error_brightness;
1771 }
1772
1773 err = acer_rfkill_init(&device->dev);
1774 if (err)
1775 goto error_rfkill;
1776
1777 return err;
1778
1779 error_rfkill:
1780 if (has_cap(ACER_CAP_BRIGHTNESS))
1781 acer_backlight_exit();
1782 error_brightness:
1783 if (has_cap(ACER_CAP_MAILLED))
1784 acer_led_exit();
1785 error_mailled:
1786 return err;
1787 }
1788
acer_platform_remove(struct platform_device * device)1789 static int acer_platform_remove(struct platform_device *device)
1790 {
1791 if (has_cap(ACER_CAP_MAILLED))
1792 acer_led_exit();
1793 if (has_cap(ACER_CAP_BRIGHTNESS))
1794 acer_backlight_exit();
1795
1796 acer_rfkill_exit();
1797 return 0;
1798 }
1799
acer_platform_suspend(struct platform_device * dev,pm_message_t state)1800 static int acer_platform_suspend(struct platform_device *dev,
1801 pm_message_t state)
1802 {
1803 u32 value;
1804 struct acer_data *data = &interface->data;
1805
1806 if (!data)
1807 return -ENOMEM;
1808
1809 if (has_cap(ACER_CAP_MAILLED)) {
1810 get_u32(&value, ACER_CAP_MAILLED);
1811 set_u32(LED_OFF, ACER_CAP_MAILLED);
1812 data->mailled = value;
1813 }
1814
1815 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1816 get_u32(&value, ACER_CAP_BRIGHTNESS);
1817 data->brightness = value;
1818 }
1819
1820 return 0;
1821 }
1822
acer_platform_resume(struct platform_device * device)1823 static int acer_platform_resume(struct platform_device *device)
1824 {
1825 struct acer_data *data = &interface->data;
1826
1827 if (!data)
1828 return -ENOMEM;
1829
1830 if (has_cap(ACER_CAP_MAILLED))
1831 set_u32(data->mailled, ACER_CAP_MAILLED);
1832
1833 if (has_cap(ACER_CAP_BRIGHTNESS))
1834 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1835
1836 return 0;
1837 }
1838
acer_platform_shutdown(struct platform_device * device)1839 static void acer_platform_shutdown(struct platform_device *device)
1840 {
1841 struct acer_data *data = &interface->data;
1842
1843 if (!data)
1844 return;
1845
1846 if (has_cap(ACER_CAP_MAILLED))
1847 set_u32(LED_OFF, ACER_CAP_MAILLED);
1848 }
1849
1850 static struct platform_driver acer_platform_driver = {
1851 .driver = {
1852 .name = "acer-wmi",
1853 .owner = THIS_MODULE,
1854 },
1855 .probe = acer_platform_probe,
1856 .remove = acer_platform_remove,
1857 .suspend = acer_platform_suspend,
1858 .resume = acer_platform_resume,
1859 .shutdown = acer_platform_shutdown,
1860 };
1861
1862 static struct platform_device *acer_platform_device;
1863
remove_sysfs(struct platform_device * device)1864 static int remove_sysfs(struct platform_device *device)
1865 {
1866 if (has_cap(ACER_CAP_THREEG))
1867 device_remove_file(&device->dev, &dev_attr_threeg);
1868
1869 device_remove_file(&device->dev, &dev_attr_interface);
1870
1871 return 0;
1872 }
1873
create_sysfs(void)1874 static int create_sysfs(void)
1875 {
1876 int retval = -ENOMEM;
1877
1878 if (has_cap(ACER_CAP_THREEG)) {
1879 retval = device_create_file(&acer_platform_device->dev,
1880 &dev_attr_threeg);
1881 if (retval)
1882 goto error_sysfs;
1883 }
1884
1885 retval = device_create_file(&acer_platform_device->dev,
1886 &dev_attr_interface);
1887 if (retval)
1888 goto error_sysfs;
1889
1890 return 0;
1891
1892 error_sysfs:
1893 remove_sysfs(acer_platform_device);
1894 return retval;
1895 }
1896
remove_debugfs(void)1897 static void remove_debugfs(void)
1898 {
1899 debugfs_remove(interface->debug.devices);
1900 debugfs_remove(interface->debug.root);
1901 }
1902
create_debugfs(void)1903 static int create_debugfs(void)
1904 {
1905 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1906 if (!interface->debug.root) {
1907 pr_err("Failed to create debugfs directory");
1908 return -ENOMEM;
1909 }
1910
1911 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1912 interface->debug.root,
1913 &interface->debug.wmid_devices);
1914 if (!interface->debug.devices)
1915 goto error_debugfs;
1916
1917 return 0;
1918
1919 error_debugfs:
1920 remove_debugfs();
1921 return -ENOMEM;
1922 }
1923
acer_wmi_init(void)1924 static int __init acer_wmi_init(void)
1925 {
1926 int err;
1927
1928 pr_info("Acer Laptop ACPI-WMI Extras\n");
1929
1930 if (dmi_check_system(acer_blacklist)) {
1931 pr_info("Blacklisted hardware detected - not loading\n");
1932 return -ENODEV;
1933 }
1934
1935 find_quirks();
1936
1937 /*
1938 * Detect which ACPI-WMI interface we're using.
1939 */
1940 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1941 interface = &AMW0_V2_interface;
1942
1943 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1944 interface = &wmid_interface;
1945
1946 if (wmi_has_guid(WMID_GUID3))
1947 interface = &wmid_v2_interface;
1948
1949 if (interface)
1950 dmi_walk(type_aa_dmi_decode, NULL);
1951
1952 if (wmi_has_guid(WMID_GUID2) && interface) {
1953 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
1954 pr_err("Unable to detect available WMID devices\n");
1955 return -ENODEV;
1956 }
1957 /* WMID always provides brightness methods */
1958 interface->capability |= ACER_CAP_BRIGHTNESS;
1959 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
1960 pr_err("No WMID device detection method found\n");
1961 return -ENODEV;
1962 }
1963
1964 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1965 interface = &AMW0_interface;
1966
1967 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1968 pr_err("Unable to detect available AMW0 devices\n");
1969 return -ENODEV;
1970 }
1971 }
1972
1973 if (wmi_has_guid(AMW0_GUID1))
1974 AMW0_find_mailled();
1975
1976 if (!interface) {
1977 pr_err("No or unsupported WMI interface, unable to load\n");
1978 return -ENODEV;
1979 }
1980
1981 set_quirks();
1982
1983 if (acpi_video_backlight_support()) {
1984 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1985 pr_info("Brightness must be controlled by "
1986 "generic video driver\n");
1987 }
1988
1989 if (wmi_has_guid(WMID_GUID3)) {
1990 if (ec_raw_mode) {
1991 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1992 pr_err("Cannot enable EC raw mode\n");
1993 return -ENODEV;
1994 }
1995 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1996 pr_err("Cannot enable Launch Manager mode\n");
1997 return -ENODEV;
1998 }
1999 } else if (ec_raw_mode) {
2000 pr_info("No WMID EC raw mode enable method\n");
2001 }
2002
2003 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2004 err = acer_wmi_input_setup();
2005 if (err)
2006 return err;
2007 }
2008
2009 err = platform_driver_register(&acer_platform_driver);
2010 if (err) {
2011 pr_err("Unable to register platform driver.\n");
2012 goto error_platform_register;
2013 }
2014
2015 acer_platform_device = platform_device_alloc("acer-wmi", -1);
2016 if (!acer_platform_device) {
2017 err = -ENOMEM;
2018 goto error_device_alloc;
2019 }
2020
2021 err = platform_device_add(acer_platform_device);
2022 if (err)
2023 goto error_device_add;
2024
2025 err = create_sysfs();
2026 if (err)
2027 goto error_create_sys;
2028
2029 if (wmi_has_guid(WMID_GUID2)) {
2030 interface->debug.wmid_devices = get_wmid_devices();
2031 err = create_debugfs();
2032 if (err)
2033 goto error_create_debugfs;
2034 }
2035
2036 /* Override any initial settings with values from the commandline */
2037 acer_commandline_init();
2038
2039 return 0;
2040
2041 error_create_debugfs:
2042 remove_sysfs(acer_platform_device);
2043 error_create_sys:
2044 platform_device_del(acer_platform_device);
2045 error_device_add:
2046 platform_device_put(acer_platform_device);
2047 error_device_alloc:
2048 platform_driver_unregister(&acer_platform_driver);
2049 error_platform_register:
2050 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2051 acer_wmi_input_destroy();
2052
2053 return err;
2054 }
2055
acer_wmi_exit(void)2056 static void __exit acer_wmi_exit(void)
2057 {
2058 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2059 acer_wmi_input_destroy();
2060
2061 remove_sysfs(acer_platform_device);
2062 remove_debugfs();
2063 platform_device_unregister(acer_platform_device);
2064 platform_driver_unregister(&acer_platform_driver);
2065
2066 pr_info("Acer Laptop WMI Extras unloaded\n");
2067 return;
2068 }
2069
2070 module_init(acer_wmi_init);
2071 module_exit(acer_wmi_exit);
2072