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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#include <acpi/video.h>
45
46MODULE_AUTHOR("Carlos Corbacho");
47MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
48MODULE_LICENSE("GPL");
49
50/*
51 * Magic Number
52 * Meaning is unknown - this number is required for writing to ACPI for AMW0
53 * (it's also used in acerhk when directly accessing the BIOS)
54 */
55#define ACER_AMW0_WRITE 0x9610
56
57/*
58 * Bit masks for the AMW0 interface
59 */
60#define ACER_AMW0_WIRELESS_MASK 0x35
61#define ACER_AMW0_BLUETOOTH_MASK 0x34
62#define ACER_AMW0_MAILLED_MASK 0x31
63
64/*
65 * Method IDs for WMID interface
66 */
67#define ACER_WMID_GET_WIRELESS_METHODID 1
68#define ACER_WMID_GET_BLUETOOTH_METHODID 2
69#define ACER_WMID_GET_BRIGHTNESS_METHODID 3
70#define ACER_WMID_SET_WIRELESS_METHODID 4
71#define ACER_WMID_SET_BLUETOOTH_METHODID 5
72#define ACER_WMID_SET_BRIGHTNESS_METHODID 6
73#define ACER_WMID_GET_THREEG_METHODID 10
74#define ACER_WMID_SET_THREEG_METHODID 11
75
76/*
77 * Acer ACPI method GUIDs
78 */
79#define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
80#define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
81#define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
82#define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A"
83#define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
84
85/*
86 * Acer ACPI event GUIDs
87 */
88#define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
89
90MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
91MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
92MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
93
94enum acer_wmi_event_ids {
95 WMID_HOTKEY_EVENT = 0x1,
96 WMID_ACCEL_EVENT = 0x5,
97};
98
99static const struct key_entry acer_wmi_keymap[] __initconst = {
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_KEY, 0x29, {KEY_PROG3} }, /* P_Key for TM8372 */
109 {KE_IGNORE, 0x41, {KEY_MUTE} },
110 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
111 {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
112 {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
113 {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
114 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
115 {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
116 {KE_IGNORE, 0x45, {KEY_STOP} },
117 {KE_IGNORE, 0x50, {KEY_STOP} },
118 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
119 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
120 {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
121 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
122 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
123 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
124 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
125 {KE_IGNORE, 0x81, {KEY_SLEEP} },
126 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
127 {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
128 {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
129 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
130 {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
131 {KE_END, 0}
132};
133
134static struct input_dev *acer_wmi_input_dev;
135static struct input_dev *acer_wmi_accel_dev;
136
137struct event_return_value {
138 u8 function;
139 u8 key_num;
140 u16 device_state;
141 u32 reserved;
142} __attribute__((packed));
143
144/*
145 * GUID3 Get Device Status device flags
146 */
147#define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
148#define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
149#define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
150#define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
151#define ACER_WMID3_GDS_TOUCHPAD (1<<1) /* Touchpad */
152
153struct lm_input_params {
154 u8 function_num; /* Function Number */
155 u16 commun_devices; /* Communication type devices default status */
156 u16 devices; /* Other type devices default status */
157 u8 lm_status; /* Launch Manager Status */
158 u16 reserved;
159} __attribute__((packed));
160
161struct lm_return_value {
162 u8 error_code; /* Error Code */
163 u8 ec_return_value; /* EC Return Value */
164 u16 reserved;
165} __attribute__((packed));
166
167struct wmid3_gds_set_input_param { /* Set Device Status input parameter */
168 u8 function_num; /* Function Number */
169 u8 hotkey_number; /* Hotkey Number */
170 u16 devices; /* Set Device */
171 u8 volume_value; /* Volume Value */
172} __attribute__((packed));
173
174struct wmid3_gds_get_input_param { /* Get Device Status input parameter */
175 u8 function_num; /* Function Number */
176 u8 hotkey_number; /* Hotkey Number */
177 u16 devices; /* Get Device */
178} __attribute__((packed));
179
180struct wmid3_gds_return_value { /* Get Device Status return value*/
181 u8 error_code; /* Error Code */
182 u8 ec_return_value; /* EC Return Value */
183 u16 devices; /* Current Device Status */
184 u32 reserved;
185} __attribute__((packed));
186
187struct hotkey_function_type_aa {
188 u8 type;
189 u8 length;
190 u16 handle;
191 u16 commun_func_bitmap;
192 u16 application_func_bitmap;
193 u16 media_func_bitmap;
194 u16 display_func_bitmap;
195 u16 others_func_bitmap;
196 u8 commun_fn_key_number;
197} __attribute__((packed));
198
199/*
200 * Interface capability flags
201 */
202#define ACER_CAP_MAILLED (1<<0)
203#define ACER_CAP_WIRELESS (1<<1)
204#define ACER_CAP_BLUETOOTH (1<<2)
205#define ACER_CAP_BRIGHTNESS (1<<3)
206#define ACER_CAP_THREEG (1<<4)
207#define ACER_CAP_ACCEL (1<<5)
208#define ACER_CAP_ANY (0xFFFFFFFF)
209
210/*
211 * Interface type flags
212 */
213enum interface_flags {
214 ACER_AMW0,
215 ACER_AMW0_V2,
216 ACER_WMID,
217 ACER_WMID_v2,
218};
219
220#define ACER_DEFAULT_WIRELESS 0
221#define ACER_DEFAULT_BLUETOOTH 0
222#define ACER_DEFAULT_MAILLED 0
223#define ACER_DEFAULT_THREEG 0
224
225static int max_brightness = 0xF;
226
227static int mailled = -1;
228static int brightness = -1;
229static int threeg = -1;
230static int force_series;
231static bool ec_raw_mode;
232static bool has_type_aa;
233static u16 commun_func_bitmap;
234static u8 commun_fn_key_number;
235
236module_param(mailled, int, 0444);
237module_param(brightness, int, 0444);
238module_param(threeg, int, 0444);
239module_param(force_series, int, 0444);
240module_param(ec_raw_mode, bool, 0444);
241MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
242MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
243MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
244MODULE_PARM_DESC(force_series, "Force a different laptop series");
245MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
246
247struct acer_data {
248 int mailled;
249 int threeg;
250 int brightness;
251};
252
253struct acer_debug {
254 struct dentry *root;
255 struct dentry *devices;
256 u32 wmid_devices;
257};
258
259static struct rfkill *wireless_rfkill;
260static struct rfkill *bluetooth_rfkill;
261static struct rfkill *threeg_rfkill;
262static bool rfkill_inited;
263
264/* Each low-level interface must define at least some of the following */
265struct wmi_interface {
266 /* The WMI device type */
267 u32 type;
268
269 /* The capabilities this interface provides */
270 u32 capability;
271
272 /* Private data for the current interface */
273 struct acer_data data;
274
275 /* debugfs entries associated with this interface */
276 struct acer_debug debug;
277};
278
279/* The static interface pointer, points to the currently detected interface */
280static struct wmi_interface *interface;
281
282/*
283 * Embedded Controller quirks
284 * Some laptops require us to directly access the EC to either enable or query
285 * features that are not available through WMI.
286 */
287
288struct quirk_entry {
289 u8 wireless;
290 u8 mailled;
291 s8 brightness;
292 u8 bluetooth;
293};
294
295static struct quirk_entry *quirks;
296
297static void __init set_quirks(void)
298{
299 if (!interface)
300 return;
301
302 if (quirks->mailled)
303 interface->capability |= ACER_CAP_MAILLED;
304
305 if (quirks->brightness)
306 interface->capability |= ACER_CAP_BRIGHTNESS;
307}
308
309static int __init dmi_matched(const struct dmi_system_id *dmi)
310{
311 quirks = dmi->driver_data;
312 return 1;
313}
314
315static struct quirk_entry quirk_unknown = {
316};
317
318static struct quirk_entry quirk_acer_aspire_1520 = {
319 .brightness = -1,
320};
321
322static struct quirk_entry quirk_acer_travelmate_2490 = {
323 .mailled = 1,
324};
325
326/* This AMW0 laptop has no bluetooth */
327static struct quirk_entry quirk_medion_md_98300 = {
328 .wireless = 1,
329};
330
331static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
332 .wireless = 2,
333};
334
335static struct quirk_entry quirk_lenovo_ideapad_s205 = {
336 .wireless = 3,
337};
338
339/* The Aspire One has a dummy ACPI-WMI interface - disable it */
340static const struct dmi_system_id acer_blacklist[] __initconst = {
341 {
342 .ident = "Acer Aspire One (SSD)",
343 .matches = {
344 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
345 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
346 },
347 },
348 {
349 .ident = "Acer Aspire One (HDD)",
350 .matches = {
351 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
352 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
353 },
354 },
355 {}
356};
357
358static const struct dmi_system_id acer_quirks[] __initconst = {
359 {
360 .callback = dmi_matched,
361 .ident = "Acer Aspire 1360",
362 .matches = {
363 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
364 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
365 },
366 .driver_data = &quirk_acer_aspire_1520,
367 },
368 {
369 .callback = dmi_matched,
370 .ident = "Acer Aspire 1520",
371 .matches = {
372 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
373 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
374 },
375 .driver_data = &quirk_acer_aspire_1520,
376 },
377 {
378 .callback = dmi_matched,
379 .ident = "Acer Aspire 3100",
380 .matches = {
381 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
382 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
383 },
384 .driver_data = &quirk_acer_travelmate_2490,
385 },
386 {
387 .callback = dmi_matched,
388 .ident = "Acer Aspire 3610",
389 .matches = {
390 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
391 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
392 },
393 .driver_data = &quirk_acer_travelmate_2490,
394 },
395 {
396 .callback = dmi_matched,
397 .ident = "Acer Aspire 5100",
398 .matches = {
399 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
400 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
401 },
402 .driver_data = &quirk_acer_travelmate_2490,
403 },
404 {
405 .callback = dmi_matched,
406 .ident = "Acer Aspire 5610",
407 .matches = {
408 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
409 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
410 },
411 .driver_data = &quirk_acer_travelmate_2490,
412 },
413 {
414 .callback = dmi_matched,
415 .ident = "Acer Aspire 5630",
416 .matches = {
417 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
418 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
419 },
420 .driver_data = &quirk_acer_travelmate_2490,
421 },
422 {
423 .callback = dmi_matched,
424 .ident = "Acer Aspire 5650",
425 .matches = {
426 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
427 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
428 },
429 .driver_data = &quirk_acer_travelmate_2490,
430 },
431 {
432 .callback = dmi_matched,
433 .ident = "Acer Aspire 5680",
434 .matches = {
435 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
436 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
437 },
438 .driver_data = &quirk_acer_travelmate_2490,
439 },
440 {
441 .callback = dmi_matched,
442 .ident = "Acer Aspire 9110",
443 .matches = {
444 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
445 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
446 },
447 .driver_data = &quirk_acer_travelmate_2490,
448 },
449 {
450 .callback = dmi_matched,
451 .ident = "Acer TravelMate 2490",
452 .matches = {
453 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
454 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
455 },
456 .driver_data = &quirk_acer_travelmate_2490,
457 },
458 {
459 .callback = dmi_matched,
460 .ident = "Acer TravelMate 4200",
461 .matches = {
462 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
463 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
464 },
465 .driver_data = &quirk_acer_travelmate_2490,
466 },
467 {
468 .callback = dmi_matched,
469 .ident = "Fujitsu Siemens Amilo Li 1718",
470 .matches = {
471 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
472 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
473 },
474 .driver_data = &quirk_fujitsu_amilo_li_1718,
475 },
476 {
477 .callback = dmi_matched,
478 .ident = "Medion MD 98300",
479 .matches = {
480 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
481 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
482 },
483 .driver_data = &quirk_medion_md_98300,
484 },
485 {
486 .callback = dmi_matched,
487 .ident = "Lenovo Ideapad S205",
488 .matches = {
489 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
490 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
491 },
492 .driver_data = &quirk_lenovo_ideapad_s205,
493 },
494 {
495 .callback = dmi_matched,
496 .ident = "Lenovo Ideapad S205 (Brazos)",
497 .matches = {
498 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
499 DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
500 },
501 .driver_data = &quirk_lenovo_ideapad_s205,
502 },
503 {
504 .callback = dmi_matched,
505 .ident = "Lenovo 3000 N200",
506 .matches = {
507 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
508 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
509 },
510 .driver_data = &quirk_fujitsu_amilo_li_1718,
511 },
512 {
513 .callback = dmi_matched,
514 .ident = "Lenovo Ideapad S205-10382JG",
515 .matches = {
516 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
517 DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
518 },
519 .driver_data = &quirk_lenovo_ideapad_s205,
520 },
521 {
522 .callback = dmi_matched,
523 .ident = "Lenovo Ideapad S205-1038DPG",
524 .matches = {
525 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
526 DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
527 },
528 .driver_data = &quirk_lenovo_ideapad_s205,
529 },
530 {}
531};
532
533static int __init
534video_set_backlight_video_vendor(const struct dmi_system_id *d)
535{
536 interface->capability &= ~ACER_CAP_BRIGHTNESS;
537 pr_info("Brightness must be controlled by generic video driver\n");
538 return 0;
539}
540
541static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
542 {
543 .callback = video_set_backlight_video_vendor,
544 .ident = "Acer TravelMate 4750",
545 .matches = {
546 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
547 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
548 },
549 },
550 {
551 .callback = video_set_backlight_video_vendor,
552 .ident = "Acer Extensa 5235",
553 .matches = {
554 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
555 DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
556 },
557 },
558 {
559 .callback = video_set_backlight_video_vendor,
560 .ident = "Acer TravelMate 5760",
561 .matches = {
562 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
563 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
564 },
565 },
566 {
567 .callback = video_set_backlight_video_vendor,
568 .ident = "Acer Aspire 5750",
569 .matches = {
570 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
571 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
572 },
573 },
574 {
575 .callback = video_set_backlight_video_vendor,
576 .ident = "Acer Aspire 5741",
577 .matches = {
578 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
579 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
580 },
581 },
582 {
583 /*
584 * Note no video_set_backlight_video_vendor, we must use the
585 * acer interface, as there is no native backlight interface.
586 */
587 .ident = "Acer KAV80",
588 .matches = {
589 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
590 DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
591 },
592 },
593 {}
594};
595
596/* Find which quirks are needed for a particular vendor/ model pair */
597static void __init find_quirks(void)
598{
599 if (!force_series) {
600 dmi_check_system(acer_quirks);
601 } else if (force_series == 2490) {
602 quirks = &quirk_acer_travelmate_2490;
603 }
604
605 if (quirks == NULL)
606 quirks = &quirk_unknown;
607
608 set_quirks();
609}
610
611/*
612 * General interface convenience methods
613 */
614
615static bool has_cap(u32 cap)
616{
617 if ((interface->capability & cap) != 0)
618 return 1;
619
620 return 0;
621}
622
623/*
624 * AMW0 (V1) interface
625 */
626struct wmab_args {
627 u32 eax;
628 u32 ebx;
629 u32 ecx;
630 u32 edx;
631};
632
633struct wmab_ret {
634 u32 eax;
635 u32 ebx;
636 u32 ecx;
637 u32 edx;
638 u32 eex;
639};
640
641static acpi_status wmab_execute(struct wmab_args *regbuf,
642struct acpi_buffer *result)
643{
644 struct acpi_buffer input;
645 acpi_status status;
646 input.length = sizeof(struct wmab_args);
647 input.pointer = (u8 *)regbuf;
648
649 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
650
651 return status;
652}
653
654static acpi_status AMW0_get_u32(u32 *value, u32 cap)
655{
656 int err;
657 u8 result;
658
659 switch (cap) {
660 case ACER_CAP_MAILLED:
661 switch (quirks->mailled) {
662 default:
663 err = ec_read(0xA, &result);
664 if (err)
665 return AE_ERROR;
666 *value = (result >> 7) & 0x1;
667 return AE_OK;
668 }
669 break;
670 case ACER_CAP_WIRELESS:
671 switch (quirks->wireless) {
672 case 1:
673 err = ec_read(0x7B, &result);
674 if (err)
675 return AE_ERROR;
676 *value = result & 0x1;
677 return AE_OK;
678 case 2:
679 err = ec_read(0x71, &result);
680 if (err)
681 return AE_ERROR;
682 *value = result & 0x1;
683 return AE_OK;
684 case 3:
685 err = ec_read(0x78, &result);
686 if (err)
687 return AE_ERROR;
688 *value = result & 0x1;
689 return AE_OK;
690 default:
691 err = ec_read(0xA, &result);
692 if (err)
693 return AE_ERROR;
694 *value = (result >> 2) & 0x1;
695 return AE_OK;
696 }
697 break;
698 case ACER_CAP_BLUETOOTH:
699 switch (quirks->bluetooth) {
700 default:
701 err = ec_read(0xA, &result);
702 if (err)
703 return AE_ERROR;
704 *value = (result >> 4) & 0x1;
705 return AE_OK;
706 }
707 break;
708 case ACER_CAP_BRIGHTNESS:
709 switch (quirks->brightness) {
710 default:
711 err = ec_read(0x83, &result);
712 if (err)
713 return AE_ERROR;
714 *value = result;
715 return AE_OK;
716 }
717 break;
718 default:
719 return AE_ERROR;
720 }
721 return AE_OK;
722}
723
724static acpi_status AMW0_set_u32(u32 value, u32 cap)
725{
726 struct wmab_args args;
727
728 args.eax = ACER_AMW0_WRITE;
729 args.ebx = value ? (1<<8) : 0;
730 args.ecx = args.edx = 0;
731
732 switch (cap) {
733 case ACER_CAP_MAILLED:
734 if (value > 1)
735 return AE_BAD_PARAMETER;
736 args.ebx |= ACER_AMW0_MAILLED_MASK;
737 break;
738 case ACER_CAP_WIRELESS:
739 if (value > 1)
740 return AE_BAD_PARAMETER;
741 args.ebx |= ACER_AMW0_WIRELESS_MASK;
742 break;
743 case ACER_CAP_BLUETOOTH:
744 if (value > 1)
745 return AE_BAD_PARAMETER;
746 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
747 break;
748 case ACER_CAP_BRIGHTNESS:
749 if (value > max_brightness)
750 return AE_BAD_PARAMETER;
751 switch (quirks->brightness) {
752 default:
753 return ec_write(0x83, value);
754 break;
755 }
756 default:
757 return AE_ERROR;
758 }
759
760 /* Actually do the set */
761 return wmab_execute(&args, NULL);
762}
763
764static acpi_status __init AMW0_find_mailled(void)
765{
766 struct wmab_args args;
767 struct wmab_ret ret;
768 acpi_status status = AE_OK;
769 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
770 union acpi_object *obj;
771
772 args.eax = 0x86;
773 args.ebx = args.ecx = args.edx = 0;
774
775 status = wmab_execute(&args, &out);
776 if (ACPI_FAILURE(status))
777 return status;
778
779 obj = (union acpi_object *) out.pointer;
780 if (obj && obj->type == ACPI_TYPE_BUFFER &&
781 obj->buffer.length == sizeof(struct wmab_ret)) {
782 ret = *((struct wmab_ret *) obj->buffer.pointer);
783 } else {
784 kfree(out.pointer);
785 return AE_ERROR;
786 }
787
788 if (ret.eex & 0x1)
789 interface->capability |= ACER_CAP_MAILLED;
790
791 kfree(out.pointer);
792
793 return AE_OK;
794}
795
796static int AMW0_set_cap_acpi_check_device_found __initdata;
797
798static acpi_status __init AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
799 u32 level, void *context, void **retval)
800{
801 AMW0_set_cap_acpi_check_device_found = 1;
802 return AE_OK;
803}
804
805static const struct acpi_device_id norfkill_ids[] __initconst = {
806 { "VPC2004", 0},
807 { "IBM0068", 0},
808 { "LEN0068", 0},
809 { "SNY5001", 0}, /* sony-laptop in charge */
810 { "HPQ6601", 0},
811 { "", 0},
812};
813
814static int __init AMW0_set_cap_acpi_check_device(void)
815{
816 const struct acpi_device_id *id;
817
818 for (id = norfkill_ids; id->id[0]; id++)
819 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
820 NULL, NULL);
821 return AMW0_set_cap_acpi_check_device_found;
822}
823
824static acpi_status __init AMW0_set_capabilities(void)
825{
826 struct wmab_args args;
827 struct wmab_ret ret;
828 acpi_status status;
829 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
830 union acpi_object *obj;
831
832 /*
833 * On laptops with this strange GUID (non Acer), normal probing doesn't
834 * work.
835 */
836 if (wmi_has_guid(AMW0_GUID2)) {
837 if ((quirks != &quirk_unknown) ||
838 !AMW0_set_cap_acpi_check_device())
839 interface->capability |= ACER_CAP_WIRELESS;
840 return AE_OK;
841 }
842
843 args.eax = ACER_AMW0_WRITE;
844 args.ecx = args.edx = 0;
845
846 args.ebx = 0xa2 << 8;
847 args.ebx |= ACER_AMW0_WIRELESS_MASK;
848
849 status = wmab_execute(&args, &out);
850 if (ACPI_FAILURE(status))
851 return status;
852
853 obj = out.pointer;
854 if (obj && obj->type == ACPI_TYPE_BUFFER &&
855 obj->buffer.length == sizeof(struct wmab_ret)) {
856 ret = *((struct wmab_ret *) obj->buffer.pointer);
857 } else {
858 status = AE_ERROR;
859 goto out;
860 }
861
862 if (ret.eax & 0x1)
863 interface->capability |= ACER_CAP_WIRELESS;
864
865 args.ebx = 2 << 8;
866 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
867
868 /*
869 * It's ok to use existing buffer for next wmab_execute call.
870 * But we need to kfree(out.pointer) if next wmab_execute fail.
871 */
872 status = wmab_execute(&args, &out);
873 if (ACPI_FAILURE(status))
874 goto out;
875
876 obj = (union acpi_object *) out.pointer;
877 if (obj && obj->type == ACPI_TYPE_BUFFER
878 && obj->buffer.length == sizeof(struct wmab_ret)) {
879 ret = *((struct wmab_ret *) obj->buffer.pointer);
880 } else {
881 status = AE_ERROR;
882 goto out;
883 }
884
885 if (ret.eax & 0x1)
886 interface->capability |= ACER_CAP_BLUETOOTH;
887
888 /*
889 * This appears to be safe to enable, since all Wistron based laptops
890 * appear to use the same EC register for brightness, even if they
891 * differ for wireless, etc
892 */
893 if (quirks->brightness >= 0)
894 interface->capability |= ACER_CAP_BRIGHTNESS;
895
896 status = AE_OK;
897out:
898 kfree(out.pointer);
899 return status;
900}
901
902static struct wmi_interface AMW0_interface = {
903 .type = ACER_AMW0,
904};
905
906static struct wmi_interface AMW0_V2_interface = {
907 .type = ACER_AMW0_V2,
908};
909
910/*
911 * New interface (The WMID interface)
912 */
913static acpi_status
914WMI_execute_u32(u32 method_id, u32 in, u32 *out)
915{
916 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
917 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
918 union acpi_object *obj;
919 u32 tmp = 0;
920 acpi_status status;
921
922 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
923
924 if (ACPI_FAILURE(status))
925 return status;
926
927 obj = (union acpi_object *) result.pointer;
928 if (obj) {
929 if (obj->type == ACPI_TYPE_BUFFER &&
930 (obj->buffer.length == sizeof(u32) ||
931 obj->buffer.length == sizeof(u64))) {
932 tmp = *((u32 *) obj->buffer.pointer);
933 } else if (obj->type == ACPI_TYPE_INTEGER) {
934 tmp = (u32) obj->integer.value;
935 }
936 }
937
938 if (out)
939 *out = tmp;
940
941 kfree(result.pointer);
942
943 return status;
944}
945
946static acpi_status WMID_get_u32(u32 *value, u32 cap)
947{
948 acpi_status status;
949 u8 tmp;
950 u32 result, method_id = 0;
951
952 switch (cap) {
953 case ACER_CAP_WIRELESS:
954 method_id = ACER_WMID_GET_WIRELESS_METHODID;
955 break;
956 case ACER_CAP_BLUETOOTH:
957 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
958 break;
959 case ACER_CAP_BRIGHTNESS:
960 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
961 break;
962 case ACER_CAP_THREEG:
963 method_id = ACER_WMID_GET_THREEG_METHODID;
964 break;
965 case ACER_CAP_MAILLED:
966 if (quirks->mailled == 1) {
967 ec_read(0x9f, &tmp);
968 *value = tmp & 0x1;
969 return 0;
970 }
971 default:
972 return AE_ERROR;
973 }
974 status = WMI_execute_u32(method_id, 0, &result);
975
976 if (ACPI_SUCCESS(status))
977 *value = (u8)result;
978
979 return status;
980}
981
982static acpi_status WMID_set_u32(u32 value, u32 cap)
983{
984 u32 method_id = 0;
985 char param;
986
987 switch (cap) {
988 case ACER_CAP_BRIGHTNESS:
989 if (value > max_brightness)
990 return AE_BAD_PARAMETER;
991 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
992 break;
993 case ACER_CAP_WIRELESS:
994 if (value > 1)
995 return AE_BAD_PARAMETER;
996 method_id = ACER_WMID_SET_WIRELESS_METHODID;
997 break;
998 case ACER_CAP_BLUETOOTH:
999 if (value > 1)
1000 return AE_BAD_PARAMETER;
1001 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
1002 break;
1003 case ACER_CAP_THREEG:
1004 if (value > 1)
1005 return AE_BAD_PARAMETER;
1006 method_id = ACER_WMID_SET_THREEG_METHODID;
1007 break;
1008 case ACER_CAP_MAILLED:
1009 if (value > 1)
1010 return AE_BAD_PARAMETER;
1011 if (quirks->mailled == 1) {
1012 param = value ? 0x92 : 0x93;
1013 i8042_lock_chip();
1014 i8042_command(¶m, 0x1059);
1015 i8042_unlock_chip();
1016 return 0;
1017 }
1018 break;
1019 default:
1020 return AE_ERROR;
1021 }
1022 return WMI_execute_u32(method_id, (u32)value, NULL);
1023}
1024
1025static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1026{
1027 struct wmid3_gds_return_value return_value;
1028 acpi_status status;
1029 union acpi_object *obj;
1030 struct wmid3_gds_get_input_param params = {
1031 .function_num = 0x1,
1032 .hotkey_number = commun_fn_key_number,
1033 .devices = device,
1034 };
1035 struct acpi_buffer input = {
1036 sizeof(struct wmid3_gds_get_input_param),
1037 ¶ms
1038 };
1039 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1040
1041 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1042 if (ACPI_FAILURE(status))
1043 return status;
1044
1045 obj = output.pointer;
1046
1047 if (!obj)
1048 return AE_ERROR;
1049 else if (obj->type != ACPI_TYPE_BUFFER) {
1050 kfree(obj);
1051 return AE_ERROR;
1052 }
1053 if (obj->buffer.length != 8) {
1054 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1055 kfree(obj);
1056 return AE_ERROR;
1057 }
1058
1059 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1060 kfree(obj);
1061
1062 if (return_value.error_code || return_value.ec_return_value)
1063 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1064 device,
1065 return_value.error_code,
1066 return_value.ec_return_value);
1067 else
1068 *value = !!(return_value.devices & device);
1069
1070 return status;
1071}
1072
1073static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1074{
1075 u16 device;
1076
1077 switch (cap) {
1078 case ACER_CAP_WIRELESS:
1079 device = ACER_WMID3_GDS_WIRELESS;
1080 break;
1081 case ACER_CAP_BLUETOOTH:
1082 device = ACER_WMID3_GDS_BLUETOOTH;
1083 break;
1084 case ACER_CAP_THREEG:
1085 device = ACER_WMID3_GDS_THREEG;
1086 break;
1087 default:
1088 return AE_ERROR;
1089 }
1090 return wmid3_get_device_status(value, device);
1091}
1092
1093static acpi_status wmid3_set_device_status(u32 value, u16 device)
1094{
1095 struct wmid3_gds_return_value return_value;
1096 acpi_status status;
1097 union acpi_object *obj;
1098 u16 devices;
1099 struct wmid3_gds_get_input_param get_params = {
1100 .function_num = 0x1,
1101 .hotkey_number = commun_fn_key_number,
1102 .devices = commun_func_bitmap,
1103 };
1104 struct acpi_buffer get_input = {
1105 sizeof(struct wmid3_gds_get_input_param),
1106 &get_params
1107 };
1108 struct wmid3_gds_set_input_param set_params = {
1109 .function_num = 0x2,
1110 .hotkey_number = commun_fn_key_number,
1111 .devices = commun_func_bitmap,
1112 };
1113 struct acpi_buffer set_input = {
1114 sizeof(struct wmid3_gds_set_input_param),
1115 &set_params
1116 };
1117 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1118 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1119
1120 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1121 if (ACPI_FAILURE(status))
1122 return status;
1123
1124 obj = output.pointer;
1125
1126 if (!obj)
1127 return AE_ERROR;
1128 else if (obj->type != ACPI_TYPE_BUFFER) {
1129 kfree(obj);
1130 return AE_ERROR;
1131 }
1132 if (obj->buffer.length != 8) {
1133 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1134 kfree(obj);
1135 return AE_ERROR;
1136 }
1137
1138 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1139 kfree(obj);
1140
1141 if (return_value.error_code || return_value.ec_return_value) {
1142 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1143 return_value.error_code,
1144 return_value.ec_return_value);
1145 return status;
1146 }
1147
1148 devices = return_value.devices;
1149 set_params.devices = (value) ? (devices | device) : (devices & ~device);
1150
1151 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1152 if (ACPI_FAILURE(status))
1153 return status;
1154
1155 obj = output2.pointer;
1156
1157 if (!obj)
1158 return AE_ERROR;
1159 else if (obj->type != ACPI_TYPE_BUFFER) {
1160 kfree(obj);
1161 return AE_ERROR;
1162 }
1163 if (obj->buffer.length != 4) {
1164 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1165 kfree(obj);
1166 return AE_ERROR;
1167 }
1168
1169 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1170 kfree(obj);
1171
1172 if (return_value.error_code || return_value.ec_return_value)
1173 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1174 return_value.error_code,
1175 return_value.ec_return_value);
1176
1177 return status;
1178}
1179
1180static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1181{
1182 u16 device;
1183
1184 switch (cap) {
1185 case ACER_CAP_WIRELESS:
1186 device = ACER_WMID3_GDS_WIRELESS;
1187 break;
1188 case ACER_CAP_BLUETOOTH:
1189 device = ACER_WMID3_GDS_BLUETOOTH;
1190 break;
1191 case ACER_CAP_THREEG:
1192 device = ACER_WMID3_GDS_THREEG;
1193 break;
1194 default:
1195 return AE_ERROR;
1196 }
1197 return wmid3_set_device_status(value, device);
1198}
1199
1200static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1201{
1202 struct hotkey_function_type_aa *type_aa;
1203
1204 /* We are looking for OEM-specific Type AAh */
1205 if (header->type != 0xAA)
1206 return;
1207
1208 has_type_aa = true;
1209 type_aa = (struct hotkey_function_type_aa *) header;
1210
1211 pr_info("Function bitmap for Communication Button: 0x%x\n",
1212 type_aa->commun_func_bitmap);
1213 commun_func_bitmap = type_aa->commun_func_bitmap;
1214
1215 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1216 interface->capability |= ACER_CAP_WIRELESS;
1217 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1218 interface->capability |= ACER_CAP_THREEG;
1219 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1220 interface->capability |= ACER_CAP_BLUETOOTH;
1221
1222 commun_fn_key_number = type_aa->commun_fn_key_number;
1223}
1224
1225static acpi_status __init WMID_set_capabilities(void)
1226{
1227 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1228 union acpi_object *obj;
1229 acpi_status status;
1230 u32 devices;
1231
1232 status = wmi_query_block(WMID_GUID2, 1, &out);
1233 if (ACPI_FAILURE(status))
1234 return status;
1235
1236 obj = (union acpi_object *) out.pointer;
1237 if (obj) {
1238 if (obj->type == ACPI_TYPE_BUFFER &&
1239 (obj->buffer.length == sizeof(u32) ||
1240 obj->buffer.length == sizeof(u64))) {
1241 devices = *((u32 *) obj->buffer.pointer);
1242 } else if (obj->type == ACPI_TYPE_INTEGER) {
1243 devices = (u32) obj->integer.value;
1244 } else {
1245 kfree(out.pointer);
1246 return AE_ERROR;
1247 }
1248 } else {
1249 kfree(out.pointer);
1250 return AE_ERROR;
1251 }
1252
1253 pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1254 if (devices & 0x07)
1255 interface->capability |= ACER_CAP_WIRELESS;
1256 if (devices & 0x40)
1257 interface->capability |= ACER_CAP_THREEG;
1258 if (devices & 0x10)
1259 interface->capability |= ACER_CAP_BLUETOOTH;
1260
1261 if (!(devices & 0x20))
1262 max_brightness = 0x9;
1263
1264 kfree(out.pointer);
1265 return status;
1266}
1267
1268static struct wmi_interface wmid_interface = {
1269 .type = ACER_WMID,
1270};
1271
1272static struct wmi_interface wmid_v2_interface = {
1273 .type = ACER_WMID_v2,
1274};
1275
1276/*
1277 * Generic Device (interface-independent)
1278 */
1279
1280static acpi_status get_u32(u32 *value, u32 cap)
1281{
1282 acpi_status status = AE_ERROR;
1283
1284 switch (interface->type) {
1285 case ACER_AMW0:
1286 status = AMW0_get_u32(value, cap);
1287 break;
1288 case ACER_AMW0_V2:
1289 if (cap == ACER_CAP_MAILLED) {
1290 status = AMW0_get_u32(value, cap);
1291 break;
1292 }
1293 case ACER_WMID:
1294 status = WMID_get_u32(value, cap);
1295 break;
1296 case ACER_WMID_v2:
1297 if (cap & (ACER_CAP_WIRELESS |
1298 ACER_CAP_BLUETOOTH |
1299 ACER_CAP_THREEG))
1300 status = wmid_v2_get_u32(value, cap);
1301 else if (wmi_has_guid(WMID_GUID2))
1302 status = WMID_get_u32(value, cap);
1303 break;
1304 }
1305
1306 return status;
1307}
1308
1309static acpi_status set_u32(u32 value, u32 cap)
1310{
1311 acpi_status status;
1312
1313 if (interface->capability & cap) {
1314 switch (interface->type) {
1315 case ACER_AMW0:
1316 return AMW0_set_u32(value, cap);
1317 case ACER_AMW0_V2:
1318 if (cap == ACER_CAP_MAILLED)
1319 return AMW0_set_u32(value, cap);
1320
1321 /*
1322 * On some models, some WMID methods don't toggle
1323 * properly. For those cases, we want to run the AMW0
1324 * method afterwards to be certain we've really toggled
1325 * the device state.
1326 */
1327 if (cap == ACER_CAP_WIRELESS ||
1328 cap == ACER_CAP_BLUETOOTH) {
1329 status = WMID_set_u32(value, cap);
1330 if (ACPI_FAILURE(status))
1331 return status;
1332
1333 return AMW0_set_u32(value, cap);
1334 }
1335 case ACER_WMID:
1336 return WMID_set_u32(value, cap);
1337 case ACER_WMID_v2:
1338 if (cap & (ACER_CAP_WIRELESS |
1339 ACER_CAP_BLUETOOTH |
1340 ACER_CAP_THREEG))
1341 return wmid_v2_set_u32(value, cap);
1342 else if (wmi_has_guid(WMID_GUID2))
1343 return WMID_set_u32(value, cap);
1344 default:
1345 return AE_BAD_PARAMETER;
1346 }
1347 }
1348 return AE_BAD_PARAMETER;
1349}
1350
1351static void __init acer_commandline_init(void)
1352{
1353 /*
1354 * These will all fail silently if the value given is invalid, or the
1355 * capability isn't available on the given interface
1356 */
1357 if (mailled >= 0)
1358 set_u32(mailled, ACER_CAP_MAILLED);
1359 if (!has_type_aa && threeg >= 0)
1360 set_u32(threeg, ACER_CAP_THREEG);
1361 if (brightness >= 0)
1362 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1363}
1364
1365/*
1366 * LED device (Mail LED only, no other LEDs known yet)
1367 */
1368static void mail_led_set(struct led_classdev *led_cdev,
1369enum led_brightness value)
1370{
1371 set_u32(value, ACER_CAP_MAILLED);
1372}
1373
1374static struct led_classdev mail_led = {
1375 .name = "acer-wmi::mail",
1376 .brightness_set = mail_led_set,
1377};
1378
1379static int acer_led_init(struct device *dev)
1380{
1381 return led_classdev_register(dev, &mail_led);
1382}
1383
1384static void acer_led_exit(void)
1385{
1386 set_u32(LED_OFF, ACER_CAP_MAILLED);
1387 led_classdev_unregister(&mail_led);
1388}
1389
1390/*
1391 * Backlight device
1392 */
1393static struct backlight_device *acer_backlight_device;
1394
1395static int read_brightness(struct backlight_device *bd)
1396{
1397 u32 value;
1398 get_u32(&value, ACER_CAP_BRIGHTNESS);
1399 return value;
1400}
1401
1402static int update_bl_status(struct backlight_device *bd)
1403{
1404 int intensity = bd->props.brightness;
1405
1406 if (bd->props.power != FB_BLANK_UNBLANK)
1407 intensity = 0;
1408 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1409 intensity = 0;
1410
1411 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1412
1413 return 0;
1414}
1415
1416static const struct backlight_ops acer_bl_ops = {
1417 .get_brightness = read_brightness,
1418 .update_status = update_bl_status,
1419};
1420
1421static int acer_backlight_init(struct device *dev)
1422{
1423 struct backlight_properties props;
1424 struct backlight_device *bd;
1425
1426 memset(&props, 0, sizeof(struct backlight_properties));
1427 props.type = BACKLIGHT_PLATFORM;
1428 props.max_brightness = max_brightness;
1429 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1430 &props);
1431 if (IS_ERR(bd)) {
1432 pr_err("Could not register Acer backlight device\n");
1433 acer_backlight_device = NULL;
1434 return PTR_ERR(bd);
1435 }
1436
1437 acer_backlight_device = bd;
1438
1439 bd->props.power = FB_BLANK_UNBLANK;
1440 bd->props.brightness = read_brightness(bd);
1441 backlight_update_status(bd);
1442 return 0;
1443}
1444
1445static void acer_backlight_exit(void)
1446{
1447 backlight_device_unregister(acer_backlight_device);
1448}
1449
1450/*
1451 * Accelerometer device
1452 */
1453static acpi_handle gsensor_handle;
1454
1455static int acer_gsensor_init(void)
1456{
1457 acpi_status status;
1458 struct acpi_buffer output;
1459 union acpi_object out_obj;
1460
1461 output.length = sizeof(out_obj);
1462 output.pointer = &out_obj;
1463 status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1464 if (ACPI_FAILURE(status))
1465 return -1;
1466
1467 return 0;
1468}
1469
1470static int acer_gsensor_open(struct input_dev *input)
1471{
1472 return acer_gsensor_init();
1473}
1474
1475static int acer_gsensor_event(void)
1476{
1477 acpi_status status;
1478 struct acpi_buffer output;
1479 union acpi_object out_obj[5];
1480
1481 if (!has_cap(ACER_CAP_ACCEL))
1482 return -1;
1483
1484 output.length = sizeof(out_obj);
1485 output.pointer = out_obj;
1486
1487 status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1488 if (ACPI_FAILURE(status))
1489 return -1;
1490
1491 if (out_obj->package.count != 4)
1492 return -1;
1493
1494 input_report_abs(acer_wmi_accel_dev, ABS_X,
1495 (s16)out_obj->package.elements[0].integer.value);
1496 input_report_abs(acer_wmi_accel_dev, ABS_Y,
1497 (s16)out_obj->package.elements[1].integer.value);
1498 input_report_abs(acer_wmi_accel_dev, ABS_Z,
1499 (s16)out_obj->package.elements[2].integer.value);
1500 input_sync(acer_wmi_accel_dev);
1501 return 0;
1502}
1503
1504/*
1505 * Rfkill devices
1506 */
1507static void acer_rfkill_update(struct work_struct *ignored);
1508static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1509static void acer_rfkill_update(struct work_struct *ignored)
1510{
1511 u32 state;
1512 acpi_status status;
1513
1514 if (has_cap(ACER_CAP_WIRELESS)) {
1515 status = get_u32(&state, ACER_CAP_WIRELESS);
1516 if (ACPI_SUCCESS(status)) {
1517 if (quirks->wireless == 3)
1518 rfkill_set_hw_state(wireless_rfkill, !state);
1519 else
1520 rfkill_set_sw_state(wireless_rfkill, !state);
1521 }
1522 }
1523
1524 if (has_cap(ACER_CAP_BLUETOOTH)) {
1525 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1526 if (ACPI_SUCCESS(status))
1527 rfkill_set_sw_state(bluetooth_rfkill, !state);
1528 }
1529
1530 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1531 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1532 if (ACPI_SUCCESS(status))
1533 rfkill_set_sw_state(threeg_rfkill, !state);
1534 }
1535
1536 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1537}
1538
1539static int acer_rfkill_set(void *data, bool blocked)
1540{
1541 acpi_status status;
1542 u32 cap = (unsigned long)data;
1543
1544 if (rfkill_inited) {
1545 status = set_u32(!blocked, cap);
1546 if (ACPI_FAILURE(status))
1547 return -ENODEV;
1548 }
1549
1550 return 0;
1551}
1552
1553static const struct rfkill_ops acer_rfkill_ops = {
1554 .set_block = acer_rfkill_set,
1555};
1556
1557static struct rfkill *acer_rfkill_register(struct device *dev,
1558 enum rfkill_type type,
1559 char *name, u32 cap)
1560{
1561 int err;
1562 struct rfkill *rfkill_dev;
1563 u32 state;
1564 acpi_status status;
1565
1566 rfkill_dev = rfkill_alloc(name, dev, type,
1567 &acer_rfkill_ops,
1568 (void *)(unsigned long)cap);
1569 if (!rfkill_dev)
1570 return ERR_PTR(-ENOMEM);
1571
1572 status = get_u32(&state, cap);
1573
1574 err = rfkill_register(rfkill_dev);
1575 if (err) {
1576 rfkill_destroy(rfkill_dev);
1577 return ERR_PTR(err);
1578 }
1579
1580 if (ACPI_SUCCESS(status))
1581 rfkill_set_sw_state(rfkill_dev, !state);
1582
1583 return rfkill_dev;
1584}
1585
1586static int acer_rfkill_init(struct device *dev)
1587{
1588 int err;
1589
1590 if (has_cap(ACER_CAP_WIRELESS)) {
1591 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1592 "acer-wireless", ACER_CAP_WIRELESS);
1593 if (IS_ERR(wireless_rfkill)) {
1594 err = PTR_ERR(wireless_rfkill);
1595 goto error_wireless;
1596 }
1597 }
1598
1599 if (has_cap(ACER_CAP_BLUETOOTH)) {
1600 bluetooth_rfkill = acer_rfkill_register(dev,
1601 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1602 ACER_CAP_BLUETOOTH);
1603 if (IS_ERR(bluetooth_rfkill)) {
1604 err = PTR_ERR(bluetooth_rfkill);
1605 goto error_bluetooth;
1606 }
1607 }
1608
1609 if (has_cap(ACER_CAP_THREEG)) {
1610 threeg_rfkill = acer_rfkill_register(dev,
1611 RFKILL_TYPE_WWAN, "acer-threeg",
1612 ACER_CAP_THREEG);
1613 if (IS_ERR(threeg_rfkill)) {
1614 err = PTR_ERR(threeg_rfkill);
1615 goto error_threeg;
1616 }
1617 }
1618
1619 rfkill_inited = true;
1620
1621 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1622 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1623 schedule_delayed_work(&acer_rfkill_work,
1624 round_jiffies_relative(HZ));
1625
1626 return 0;
1627
1628error_threeg:
1629 if (has_cap(ACER_CAP_BLUETOOTH)) {
1630 rfkill_unregister(bluetooth_rfkill);
1631 rfkill_destroy(bluetooth_rfkill);
1632 }
1633error_bluetooth:
1634 if (has_cap(ACER_CAP_WIRELESS)) {
1635 rfkill_unregister(wireless_rfkill);
1636 rfkill_destroy(wireless_rfkill);
1637 }
1638error_wireless:
1639 return err;
1640}
1641
1642static void acer_rfkill_exit(void)
1643{
1644 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1645 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1646 cancel_delayed_work_sync(&acer_rfkill_work);
1647
1648 if (has_cap(ACER_CAP_WIRELESS)) {
1649 rfkill_unregister(wireless_rfkill);
1650 rfkill_destroy(wireless_rfkill);
1651 }
1652
1653 if (has_cap(ACER_CAP_BLUETOOTH)) {
1654 rfkill_unregister(bluetooth_rfkill);
1655 rfkill_destroy(bluetooth_rfkill);
1656 }
1657
1658 if (has_cap(ACER_CAP_THREEG)) {
1659 rfkill_unregister(threeg_rfkill);
1660 rfkill_destroy(threeg_rfkill);
1661 }
1662 return;
1663}
1664
1665static void acer_wmi_notify(u32 value, void *context)
1666{
1667 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1668 union acpi_object *obj;
1669 struct event_return_value return_value;
1670 acpi_status status;
1671 u16 device_state;
1672 const struct key_entry *key;
1673 u32 scancode;
1674
1675 status = wmi_get_event_data(value, &response);
1676 if (status != AE_OK) {
1677 pr_warn("bad event status 0x%x\n", status);
1678 return;
1679 }
1680
1681 obj = (union acpi_object *)response.pointer;
1682
1683 if (!obj)
1684 return;
1685 if (obj->type != ACPI_TYPE_BUFFER) {
1686 pr_warn("Unknown response received %d\n", obj->type);
1687 kfree(obj);
1688 return;
1689 }
1690 if (obj->buffer.length != 8) {
1691 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1692 kfree(obj);
1693 return;
1694 }
1695
1696 return_value = *((struct event_return_value *)obj->buffer.pointer);
1697 kfree(obj);
1698
1699 switch (return_value.function) {
1700 case WMID_HOTKEY_EVENT:
1701 device_state = return_value.device_state;
1702 pr_debug("device state: 0x%x\n", device_state);
1703
1704 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1705 return_value.key_num);
1706 if (!key) {
1707 pr_warn("Unknown key number - 0x%x\n",
1708 return_value.key_num);
1709 } else {
1710 scancode = return_value.key_num;
1711 switch (key->keycode) {
1712 case KEY_WLAN:
1713 case KEY_BLUETOOTH:
1714 if (has_cap(ACER_CAP_WIRELESS))
1715 rfkill_set_sw_state(wireless_rfkill,
1716 !(device_state & ACER_WMID3_GDS_WIRELESS));
1717 if (has_cap(ACER_CAP_THREEG))
1718 rfkill_set_sw_state(threeg_rfkill,
1719 !(device_state & ACER_WMID3_GDS_THREEG));
1720 if (has_cap(ACER_CAP_BLUETOOTH))
1721 rfkill_set_sw_state(bluetooth_rfkill,
1722 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1723 break;
1724 case KEY_TOUCHPAD_TOGGLE:
1725 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1726 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1727 }
1728 sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1729 }
1730 break;
1731 case WMID_ACCEL_EVENT:
1732 acer_gsensor_event();
1733 break;
1734 default:
1735 pr_warn("Unknown function number - %d - %d\n",
1736 return_value.function, return_value.key_num);
1737 break;
1738 }
1739}
1740
1741static acpi_status __init
1742wmid3_set_lm_mode(struct lm_input_params *params,
1743 struct lm_return_value *return_value)
1744{
1745 acpi_status status;
1746 union acpi_object *obj;
1747
1748 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1749 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1750
1751 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1752 if (ACPI_FAILURE(status))
1753 return status;
1754
1755 obj = output.pointer;
1756
1757 if (!obj)
1758 return AE_ERROR;
1759 else if (obj->type != ACPI_TYPE_BUFFER) {
1760 kfree(obj);
1761 return AE_ERROR;
1762 }
1763 if (obj->buffer.length != 4) {
1764 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1765 kfree(obj);
1766 return AE_ERROR;
1767 }
1768
1769 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1770 kfree(obj);
1771
1772 return status;
1773}
1774
1775static int __init acer_wmi_enable_ec_raw(void)
1776{
1777 struct lm_return_value return_value;
1778 acpi_status status;
1779 struct lm_input_params params = {
1780 .function_num = 0x1,
1781 .commun_devices = 0xFFFF,
1782 .devices = 0xFFFF,
1783 .lm_status = 0x00, /* Launch Manager Deactive */
1784 };
1785
1786 status = wmid3_set_lm_mode(¶ms, &return_value);
1787
1788 if (return_value.error_code || return_value.ec_return_value)
1789 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1790 return_value.error_code,
1791 return_value.ec_return_value);
1792 else
1793 pr_info("Enabled EC raw mode\n");
1794
1795 return status;
1796}
1797
1798static int __init acer_wmi_enable_lm(void)
1799{
1800 struct lm_return_value return_value;
1801 acpi_status status;
1802 struct lm_input_params params = {
1803 .function_num = 0x1,
1804 .commun_devices = 0xFFFF,
1805 .devices = 0xFFFF,
1806 .lm_status = 0x01, /* Launch Manager Active */
1807 };
1808
1809 status = wmid3_set_lm_mode(¶ms, &return_value);
1810
1811 if (return_value.error_code || return_value.ec_return_value)
1812 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1813 return_value.error_code,
1814 return_value.ec_return_value);
1815
1816 return status;
1817}
1818
1819static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1820 void *ctx, void **retval)
1821{
1822 *(acpi_handle *)retval = ah;
1823 return AE_OK;
1824}
1825
1826static int __init acer_wmi_get_handle(const char *name, const char *prop,
1827 acpi_handle *ah)
1828{
1829 acpi_status status;
1830 acpi_handle handle;
1831
1832 BUG_ON(!name || !ah);
1833
1834 handle = NULL;
1835 status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1836 (void *)name, &handle);
1837
1838 if (ACPI_SUCCESS(status)) {
1839 *ah = handle;
1840 return 0;
1841 } else {
1842 return -ENODEV;
1843 }
1844}
1845
1846static int __init acer_wmi_accel_setup(void)
1847{
1848 int err;
1849
1850 err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1851 if (err)
1852 return err;
1853
1854 interface->capability |= ACER_CAP_ACCEL;
1855
1856 acer_wmi_accel_dev = input_allocate_device();
1857 if (!acer_wmi_accel_dev)
1858 return -ENOMEM;
1859
1860 acer_wmi_accel_dev->open = acer_gsensor_open;
1861
1862 acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1863 acer_wmi_accel_dev->phys = "wmi/input1";
1864 acer_wmi_accel_dev->id.bustype = BUS_HOST;
1865 acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1866 input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1867 input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1868 input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1869
1870 err = input_register_device(acer_wmi_accel_dev);
1871 if (err)
1872 goto err_free_dev;
1873
1874 return 0;
1875
1876err_free_dev:
1877 input_free_device(acer_wmi_accel_dev);
1878 return err;
1879}
1880
1881static void acer_wmi_accel_destroy(void)
1882{
1883 input_unregister_device(acer_wmi_accel_dev);
1884}
1885
1886static int __init acer_wmi_input_setup(void)
1887{
1888 acpi_status status;
1889 int err;
1890
1891 acer_wmi_input_dev = input_allocate_device();
1892 if (!acer_wmi_input_dev)
1893 return -ENOMEM;
1894
1895 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1896 acer_wmi_input_dev->phys = "wmi/input0";
1897 acer_wmi_input_dev->id.bustype = BUS_HOST;
1898
1899 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1900 if (err)
1901 goto err_free_dev;
1902
1903 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1904 acer_wmi_notify, NULL);
1905 if (ACPI_FAILURE(status)) {
1906 err = -EIO;
1907 goto err_free_keymap;
1908 }
1909
1910 err = input_register_device(acer_wmi_input_dev);
1911 if (err)
1912 goto err_uninstall_notifier;
1913
1914 return 0;
1915
1916err_uninstall_notifier:
1917 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1918err_free_keymap:
1919 sparse_keymap_free(acer_wmi_input_dev);
1920err_free_dev:
1921 input_free_device(acer_wmi_input_dev);
1922 return err;
1923}
1924
1925static void acer_wmi_input_destroy(void)
1926{
1927 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1928 sparse_keymap_free(acer_wmi_input_dev);
1929 input_unregister_device(acer_wmi_input_dev);
1930}
1931
1932/*
1933 * debugfs functions
1934 */
1935static u32 get_wmid_devices(void)
1936{
1937 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1938 union acpi_object *obj;
1939 acpi_status status;
1940 u32 devices = 0;
1941
1942 status = wmi_query_block(WMID_GUID2, 1, &out);
1943 if (ACPI_FAILURE(status))
1944 return 0;
1945
1946 obj = (union acpi_object *) out.pointer;
1947 if (obj) {
1948 if (obj->type == ACPI_TYPE_BUFFER &&
1949 (obj->buffer.length == sizeof(u32) ||
1950 obj->buffer.length == sizeof(u64))) {
1951 devices = *((u32 *) obj->buffer.pointer);
1952 } else if (obj->type == ACPI_TYPE_INTEGER) {
1953 devices = (u32) obj->integer.value;
1954 }
1955 }
1956
1957 kfree(out.pointer);
1958 return devices;
1959}
1960
1961/*
1962 * Platform device
1963 */
1964static int acer_platform_probe(struct platform_device *device)
1965{
1966 int err;
1967
1968 if (has_cap(ACER_CAP_MAILLED)) {
1969 err = acer_led_init(&device->dev);
1970 if (err)
1971 goto error_mailled;
1972 }
1973
1974 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1975 err = acer_backlight_init(&device->dev);
1976 if (err)
1977 goto error_brightness;
1978 }
1979
1980 err = acer_rfkill_init(&device->dev);
1981 if (err)
1982 goto error_rfkill;
1983
1984 return err;
1985
1986error_rfkill:
1987 if (has_cap(ACER_CAP_BRIGHTNESS))
1988 acer_backlight_exit();
1989error_brightness:
1990 if (has_cap(ACER_CAP_MAILLED))
1991 acer_led_exit();
1992error_mailled:
1993 return err;
1994}
1995
1996static int acer_platform_remove(struct platform_device *device)
1997{
1998 if (has_cap(ACER_CAP_MAILLED))
1999 acer_led_exit();
2000 if (has_cap(ACER_CAP_BRIGHTNESS))
2001 acer_backlight_exit();
2002
2003 acer_rfkill_exit();
2004 return 0;
2005}
2006
2007#ifdef CONFIG_PM_SLEEP
2008static int acer_suspend(struct device *dev)
2009{
2010 u32 value;
2011 struct acer_data *data = &interface->data;
2012
2013 if (!data)
2014 return -ENOMEM;
2015
2016 if (has_cap(ACER_CAP_MAILLED)) {
2017 get_u32(&value, ACER_CAP_MAILLED);
2018 set_u32(LED_OFF, ACER_CAP_MAILLED);
2019 data->mailled = value;
2020 }
2021
2022 if (has_cap(ACER_CAP_BRIGHTNESS)) {
2023 get_u32(&value, ACER_CAP_BRIGHTNESS);
2024 data->brightness = value;
2025 }
2026
2027 return 0;
2028}
2029
2030static int acer_resume(struct device *dev)
2031{
2032 struct acer_data *data = &interface->data;
2033
2034 if (!data)
2035 return -ENOMEM;
2036
2037 if (has_cap(ACER_CAP_MAILLED))
2038 set_u32(data->mailled, ACER_CAP_MAILLED);
2039
2040 if (has_cap(ACER_CAP_BRIGHTNESS))
2041 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2042
2043 if (has_cap(ACER_CAP_ACCEL))
2044 acer_gsensor_init();
2045
2046 return 0;
2047}
2048#else
2049#define acer_suspend NULL
2050#define acer_resume NULL
2051#endif
2052
2053static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2054
2055static void acer_platform_shutdown(struct platform_device *device)
2056{
2057 struct acer_data *data = &interface->data;
2058
2059 if (!data)
2060 return;
2061
2062 if (has_cap(ACER_CAP_MAILLED))
2063 set_u32(LED_OFF, ACER_CAP_MAILLED);
2064}
2065
2066static struct platform_driver acer_platform_driver = {
2067 .driver = {
2068 .name = "acer-wmi",
2069 .pm = &acer_pm,
2070 },
2071 .probe = acer_platform_probe,
2072 .remove = acer_platform_remove,
2073 .shutdown = acer_platform_shutdown,
2074};
2075
2076static struct platform_device *acer_platform_device;
2077
2078static void remove_debugfs(void)
2079{
2080 debugfs_remove(interface->debug.devices);
2081 debugfs_remove(interface->debug.root);
2082}
2083
2084static int __init create_debugfs(void)
2085{
2086 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2087 if (!interface->debug.root) {
2088 pr_err("Failed to create debugfs directory");
2089 return -ENOMEM;
2090 }
2091
2092 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2093 interface->debug.root,
2094 &interface->debug.wmid_devices);
2095 if (!interface->debug.devices)
2096 goto error_debugfs;
2097
2098 return 0;
2099
2100error_debugfs:
2101 remove_debugfs();
2102 return -ENOMEM;
2103}
2104
2105static int __init acer_wmi_init(void)
2106{
2107 int err;
2108
2109 pr_info("Acer Laptop ACPI-WMI Extras\n");
2110
2111 if (dmi_check_system(acer_blacklist)) {
2112 pr_info("Blacklisted hardware detected - not loading\n");
2113 return -ENODEV;
2114 }
2115
2116 find_quirks();
2117
2118 /*
2119 * Detect which ACPI-WMI interface we're using.
2120 */
2121 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2122 interface = &AMW0_V2_interface;
2123
2124 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2125 interface = &wmid_interface;
2126
2127 if (wmi_has_guid(WMID_GUID3))
2128 interface = &wmid_v2_interface;
2129
2130 if (interface)
2131 dmi_walk(type_aa_dmi_decode, NULL);
2132
2133 if (wmi_has_guid(WMID_GUID2) && interface) {
2134 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2135 pr_err("Unable to detect available WMID devices\n");
2136 return -ENODEV;
2137 }
2138 /* WMID always provides brightness methods */
2139 interface->capability |= ACER_CAP_BRIGHTNESS;
2140 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2141 pr_err("No WMID device detection method found\n");
2142 return -ENODEV;
2143 }
2144
2145 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2146 interface = &AMW0_interface;
2147
2148 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2149 pr_err("Unable to detect available AMW0 devices\n");
2150 return -ENODEV;
2151 }
2152 }
2153
2154 if (wmi_has_guid(AMW0_GUID1))
2155 AMW0_find_mailled();
2156
2157 if (!interface) {
2158 pr_err("No or unsupported WMI interface, unable to load\n");
2159 return -ENODEV;
2160 }
2161
2162 set_quirks();
2163
2164 if (dmi_check_system(video_vendor_dmi_table))
2165 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2166
2167 if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2168 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2169
2170 if (wmi_has_guid(WMID_GUID3)) {
2171 if (ec_raw_mode) {
2172 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2173 pr_err("Cannot enable EC raw mode\n");
2174 return -ENODEV;
2175 }
2176 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2177 pr_err("Cannot enable Launch Manager mode\n");
2178 return -ENODEV;
2179 }
2180 } else if (ec_raw_mode) {
2181 pr_info("No WMID EC raw mode enable method\n");
2182 }
2183
2184 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2185 err = acer_wmi_input_setup();
2186 if (err)
2187 return err;
2188 }
2189
2190 acer_wmi_accel_setup();
2191
2192 err = platform_driver_register(&acer_platform_driver);
2193 if (err) {
2194 pr_err("Unable to register platform driver\n");
2195 goto error_platform_register;
2196 }
2197
2198 acer_platform_device = platform_device_alloc("acer-wmi", -1);
2199 if (!acer_platform_device) {
2200 err = -ENOMEM;
2201 goto error_device_alloc;
2202 }
2203
2204 err = platform_device_add(acer_platform_device);
2205 if (err)
2206 goto error_device_add;
2207
2208 if (wmi_has_guid(WMID_GUID2)) {
2209 interface->debug.wmid_devices = get_wmid_devices();
2210 err = create_debugfs();
2211 if (err)
2212 goto error_create_debugfs;
2213 }
2214
2215 /* Override any initial settings with values from the commandline */
2216 acer_commandline_init();
2217
2218 return 0;
2219
2220error_create_debugfs:
2221 platform_device_del(acer_platform_device);
2222error_device_add:
2223 platform_device_put(acer_platform_device);
2224error_device_alloc:
2225 platform_driver_unregister(&acer_platform_driver);
2226error_platform_register:
2227 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2228 acer_wmi_input_destroy();
2229 if (has_cap(ACER_CAP_ACCEL))
2230 acer_wmi_accel_destroy();
2231
2232 return err;
2233}
2234
2235static void __exit acer_wmi_exit(void)
2236{
2237 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2238 acer_wmi_input_destroy();
2239
2240 if (has_cap(ACER_CAP_ACCEL))
2241 acer_wmi_accel_destroy();
2242
2243 remove_debugfs();
2244 platform_device_unregister(acer_platform_device);
2245 platform_driver_unregister(&acer_platform_driver);
2246
2247 pr_info("Acer Laptop WMI Extras unloaded\n");
2248 return;
2249}
2250
2251module_init(acer_wmi_init);
2252module_exit(acer_wmi_exit);
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#include <acpi/video.h>
47
48MODULE_AUTHOR("Carlos Corbacho");
49MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
50MODULE_LICENSE("GPL");
51
52/*
53 * Magic Number
54 * Meaning is unknown - this number is required for writing to ACPI for AMW0
55 * (it's also used in acerhk when directly accessing the BIOS)
56 */
57#define ACER_AMW0_WRITE 0x9610
58
59/*
60 * Bit masks for the AMW0 interface
61 */
62#define ACER_AMW0_WIRELESS_MASK 0x35
63#define ACER_AMW0_BLUETOOTH_MASK 0x34
64#define ACER_AMW0_MAILLED_MASK 0x31
65
66/*
67 * Method IDs for WMID interface
68 */
69#define ACER_WMID_GET_WIRELESS_METHODID 1
70#define ACER_WMID_GET_BLUETOOTH_METHODID 2
71#define ACER_WMID_GET_BRIGHTNESS_METHODID 3
72#define ACER_WMID_SET_WIRELESS_METHODID 4
73#define ACER_WMID_SET_BLUETOOTH_METHODID 5
74#define ACER_WMID_SET_BRIGHTNESS_METHODID 6
75#define ACER_WMID_GET_THREEG_METHODID 10
76#define ACER_WMID_SET_THREEG_METHODID 11
77
78/*
79 * Acer ACPI method GUIDs
80 */
81#define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
82#define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
83#define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
84#define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A"
85#define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
86
87/*
88 * Acer ACPI event GUIDs
89 */
90#define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
91
92MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
93MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
94MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
95
96enum acer_wmi_event_ids {
97 WMID_HOTKEY_EVENT = 0x1,
98};
99
100static const struct key_entry acer_wmi_keymap[] = {
101 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
102 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */
103 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */
104 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
105 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
106 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
107 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
108 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
109 {KE_KEY, 0x29, {KEY_PROG3} }, /* P_Key for TM8372 */
110 {KE_IGNORE, 0x41, {KEY_MUTE} },
111 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
112 {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
113 {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
114 {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
115 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
116 {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
117 {KE_IGNORE, 0x45, {KEY_STOP} },
118 {KE_IGNORE, 0x50, {KEY_STOP} },
119 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
120 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
121 {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
122 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
123 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
124 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
125 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
126 {KE_IGNORE, 0x81, {KEY_SLEEP} },
127 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
128 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
129 {KE_END, 0}
130};
131
132static struct input_dev *acer_wmi_input_dev;
133
134struct event_return_value {
135 u8 function;
136 u8 key_num;
137 u16 device_state;
138 u32 reserved;
139} __attribute__((packed));
140
141/*
142 * GUID3 Get Device Status device flags
143 */
144#define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
145#define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
146#define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
147#define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
148
149struct lm_input_params {
150 u8 function_num; /* Function Number */
151 u16 commun_devices; /* Communication type devices default status */
152 u16 devices; /* Other type devices default status */
153 u8 lm_status; /* Launch Manager Status */
154 u16 reserved;
155} __attribute__((packed));
156
157struct lm_return_value {
158 u8 error_code; /* Error Code */
159 u8 ec_return_value; /* EC Return Value */
160 u16 reserved;
161} __attribute__((packed));
162
163struct wmid3_gds_set_input_param { /* Set Device Status input parameter */
164 u8 function_num; /* Function Number */
165 u8 hotkey_number; /* Hotkey Number */
166 u16 devices; /* Set Device */
167 u8 volume_value; /* Volume Value */
168} __attribute__((packed));
169
170struct wmid3_gds_get_input_param { /* Get Device Status input parameter */
171 u8 function_num; /* Function Number */
172 u8 hotkey_number; /* Hotkey Number */
173 u16 devices; /* Get Device */
174} __attribute__((packed));
175
176struct wmid3_gds_return_value { /* Get Device Status return value*/
177 u8 error_code; /* Error Code */
178 u8 ec_return_value; /* EC Return Value */
179 u16 devices; /* Current Device Status */
180 u32 reserved;
181} __attribute__((packed));
182
183struct hotkey_function_type_aa {
184 u8 type;
185 u8 length;
186 u16 handle;
187 u16 commun_func_bitmap;
188 u16 application_func_bitmap;
189 u16 media_func_bitmap;
190 u16 display_func_bitmap;
191 u16 others_func_bitmap;
192 u8 commun_fn_key_number;
193} __attribute__((packed));
194
195/*
196 * Interface capability flags
197 */
198#define ACER_CAP_MAILLED (1<<0)
199#define ACER_CAP_WIRELESS (1<<1)
200#define ACER_CAP_BLUETOOTH (1<<2)
201#define ACER_CAP_BRIGHTNESS (1<<3)
202#define ACER_CAP_THREEG (1<<4)
203#define ACER_CAP_ANY (0xFFFFFFFF)
204
205/*
206 * Interface type flags
207 */
208enum interface_flags {
209 ACER_AMW0,
210 ACER_AMW0_V2,
211 ACER_WMID,
212 ACER_WMID_v2,
213};
214
215#define ACER_DEFAULT_WIRELESS 0
216#define ACER_DEFAULT_BLUETOOTH 0
217#define ACER_DEFAULT_MAILLED 0
218#define ACER_DEFAULT_THREEG 0
219
220static int max_brightness = 0xF;
221
222static int mailled = -1;
223static int brightness = -1;
224static int threeg = -1;
225static int force_series;
226static bool ec_raw_mode;
227static bool has_type_aa;
228static u16 commun_func_bitmap;
229static u8 commun_fn_key_number;
230
231module_param(mailled, int, 0444);
232module_param(brightness, int, 0444);
233module_param(threeg, int, 0444);
234module_param(force_series, int, 0444);
235module_param(ec_raw_mode, bool, 0444);
236MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
237MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
238MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
239MODULE_PARM_DESC(force_series, "Force a different laptop series");
240MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
241
242struct acer_data {
243 int mailled;
244 int threeg;
245 int brightness;
246};
247
248struct acer_debug {
249 struct dentry *root;
250 struct dentry *devices;
251 u32 wmid_devices;
252};
253
254static struct rfkill *wireless_rfkill;
255static struct rfkill *bluetooth_rfkill;
256static struct rfkill *threeg_rfkill;
257static bool rfkill_inited;
258
259/* Each low-level interface must define at least some of the following */
260struct wmi_interface {
261 /* The WMI device type */
262 u32 type;
263
264 /* The capabilities this interface provides */
265 u32 capability;
266
267 /* Private data for the current interface */
268 struct acer_data data;
269
270 /* debugfs entries associated with this interface */
271 struct acer_debug debug;
272};
273
274/* The static interface pointer, points to the currently detected interface */
275static struct wmi_interface *interface;
276
277/*
278 * Embedded Controller quirks
279 * Some laptops require us to directly access the EC to either enable or query
280 * features that are not available through WMI.
281 */
282
283struct quirk_entry {
284 u8 wireless;
285 u8 mailled;
286 s8 brightness;
287 u8 bluetooth;
288};
289
290static struct quirk_entry *quirks;
291
292static void set_quirks(void)
293{
294 if (!interface)
295 return;
296
297 if (quirks->mailled)
298 interface->capability |= ACER_CAP_MAILLED;
299
300 if (quirks->brightness)
301 interface->capability |= ACER_CAP_BRIGHTNESS;
302}
303
304static int dmi_matched(const struct dmi_system_id *dmi)
305{
306 quirks = dmi->driver_data;
307 return 1;
308}
309
310static struct quirk_entry quirk_unknown = {
311};
312
313static struct quirk_entry quirk_acer_aspire_1520 = {
314 .brightness = -1,
315};
316
317static struct quirk_entry quirk_acer_travelmate_2490 = {
318 .mailled = 1,
319};
320
321/* This AMW0 laptop has no bluetooth */
322static struct quirk_entry quirk_medion_md_98300 = {
323 .wireless = 1,
324};
325
326static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
327 .wireless = 2,
328};
329
330static struct quirk_entry quirk_lenovo_ideapad_s205 = {
331 .wireless = 3,
332};
333
334/* The Aspire One has a dummy ACPI-WMI interface - disable it */
335static struct dmi_system_id __devinitdata acer_blacklist[] = {
336 {
337 .ident = "Acer Aspire One (SSD)",
338 .matches = {
339 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
340 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
341 },
342 },
343 {
344 .ident = "Acer Aspire One (HDD)",
345 .matches = {
346 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
347 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
348 },
349 },
350 {}
351};
352
353static struct dmi_system_id acer_quirks[] = {
354 {
355 .callback = dmi_matched,
356 .ident = "Acer Aspire 1360",
357 .matches = {
358 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
359 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
360 },
361 .driver_data = &quirk_acer_aspire_1520,
362 },
363 {
364 .callback = dmi_matched,
365 .ident = "Acer Aspire 1520",
366 .matches = {
367 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
368 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
369 },
370 .driver_data = &quirk_acer_aspire_1520,
371 },
372 {
373 .callback = dmi_matched,
374 .ident = "Acer Aspire 3100",
375 .matches = {
376 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
377 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
378 },
379 .driver_data = &quirk_acer_travelmate_2490,
380 },
381 {
382 .callback = dmi_matched,
383 .ident = "Acer Aspire 3610",
384 .matches = {
385 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
386 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
387 },
388 .driver_data = &quirk_acer_travelmate_2490,
389 },
390 {
391 .callback = dmi_matched,
392 .ident = "Acer Aspire 5100",
393 .matches = {
394 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
395 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
396 },
397 .driver_data = &quirk_acer_travelmate_2490,
398 },
399 {
400 .callback = dmi_matched,
401 .ident = "Acer Aspire 5610",
402 .matches = {
403 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
404 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
405 },
406 .driver_data = &quirk_acer_travelmate_2490,
407 },
408 {
409 .callback = dmi_matched,
410 .ident = "Acer Aspire 5630",
411 .matches = {
412 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
413 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
414 },
415 .driver_data = &quirk_acer_travelmate_2490,
416 },
417 {
418 .callback = dmi_matched,
419 .ident = "Acer Aspire 5650",
420 .matches = {
421 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
422 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
423 },
424 .driver_data = &quirk_acer_travelmate_2490,
425 },
426 {
427 .callback = dmi_matched,
428 .ident = "Acer Aspire 5680",
429 .matches = {
430 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
431 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
432 },
433 .driver_data = &quirk_acer_travelmate_2490,
434 },
435 {
436 .callback = dmi_matched,
437 .ident = "Acer Aspire 9110",
438 .matches = {
439 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
440 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
441 },
442 .driver_data = &quirk_acer_travelmate_2490,
443 },
444 {
445 .callback = dmi_matched,
446 .ident = "Acer TravelMate 2490",
447 .matches = {
448 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
449 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
450 },
451 .driver_data = &quirk_acer_travelmate_2490,
452 },
453 {
454 .callback = dmi_matched,
455 .ident = "Acer TravelMate 4200",
456 .matches = {
457 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
458 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
459 },
460 .driver_data = &quirk_acer_travelmate_2490,
461 },
462 {
463 .callback = dmi_matched,
464 .ident = "Fujitsu Siemens Amilo Li 1718",
465 .matches = {
466 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
467 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
468 },
469 .driver_data = &quirk_fujitsu_amilo_li_1718,
470 },
471 {
472 .callback = dmi_matched,
473 .ident = "Medion MD 98300",
474 .matches = {
475 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
476 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
477 },
478 .driver_data = &quirk_medion_md_98300,
479 },
480 {
481 .callback = dmi_matched,
482 .ident = "Lenovo Ideapad S205",
483 .matches = {
484 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
485 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
486 },
487 .driver_data = &quirk_lenovo_ideapad_s205,
488 },
489 {
490 .callback = dmi_matched,
491 .ident = "Lenovo Ideapad S205 (Brazos)",
492 .matches = {
493 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
494 DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
495 },
496 .driver_data = &quirk_lenovo_ideapad_s205,
497 },
498 {
499 .callback = dmi_matched,
500 .ident = "Lenovo 3000 N200",
501 .matches = {
502 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
503 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
504 },
505 .driver_data = &quirk_fujitsu_amilo_li_1718,
506 },
507 {}
508};
509
510static int video_set_backlight_video_vendor(const struct dmi_system_id *d)
511{
512 interface->capability &= ~ACER_CAP_BRIGHTNESS;
513 pr_info("Brightness must be controlled by generic video driver\n");
514 return 0;
515}
516
517static const struct dmi_system_id video_vendor_dmi_table[] = {
518 {
519 .callback = video_set_backlight_video_vendor,
520 .ident = "Acer TravelMate 4750",
521 .matches = {
522 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
523 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
524 },
525 },
526 {
527 .callback = video_set_backlight_video_vendor,
528 .ident = "Acer Extensa 5235",
529 .matches = {
530 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
531 DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
532 },
533 },
534 {
535 .callback = video_set_backlight_video_vendor,
536 .ident = "Acer TravelMate 5760",
537 .matches = {
538 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
539 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
540 },
541 },
542 {
543 .callback = video_set_backlight_video_vendor,
544 .ident = "Acer Aspire 5750",
545 .matches = {
546 DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
547 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
548 },
549 },
550 {}
551};
552
553/* Find which quirks are needed for a particular vendor/ model pair */
554static void find_quirks(void)
555{
556 if (!force_series) {
557 dmi_check_system(acer_quirks);
558 } else if (force_series == 2490) {
559 quirks = &quirk_acer_travelmate_2490;
560 }
561
562 if (quirks == NULL)
563 quirks = &quirk_unknown;
564
565 set_quirks();
566}
567
568/*
569 * General interface convenience methods
570 */
571
572static bool has_cap(u32 cap)
573{
574 if ((interface->capability & cap) != 0)
575 return 1;
576
577 return 0;
578}
579
580/*
581 * AMW0 (V1) interface
582 */
583struct wmab_args {
584 u32 eax;
585 u32 ebx;
586 u32 ecx;
587 u32 edx;
588};
589
590struct wmab_ret {
591 u32 eax;
592 u32 ebx;
593 u32 ecx;
594 u32 edx;
595 u32 eex;
596};
597
598static acpi_status wmab_execute(struct wmab_args *regbuf,
599struct acpi_buffer *result)
600{
601 struct acpi_buffer input;
602 acpi_status status;
603 input.length = sizeof(struct wmab_args);
604 input.pointer = (u8 *)regbuf;
605
606 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
607
608 return status;
609}
610
611static acpi_status AMW0_get_u32(u32 *value, u32 cap)
612{
613 int err;
614 u8 result;
615
616 switch (cap) {
617 case ACER_CAP_MAILLED:
618 switch (quirks->mailled) {
619 default:
620 err = ec_read(0xA, &result);
621 if (err)
622 return AE_ERROR;
623 *value = (result >> 7) & 0x1;
624 return AE_OK;
625 }
626 break;
627 case ACER_CAP_WIRELESS:
628 switch (quirks->wireless) {
629 case 1:
630 err = ec_read(0x7B, &result);
631 if (err)
632 return AE_ERROR;
633 *value = result & 0x1;
634 return AE_OK;
635 case 2:
636 err = ec_read(0x71, &result);
637 if (err)
638 return AE_ERROR;
639 *value = result & 0x1;
640 return AE_OK;
641 case 3:
642 err = ec_read(0x78, &result);
643 if (err)
644 return AE_ERROR;
645 *value = result & 0x1;
646 return AE_OK;
647 default:
648 err = ec_read(0xA, &result);
649 if (err)
650 return AE_ERROR;
651 *value = (result >> 2) & 0x1;
652 return AE_OK;
653 }
654 break;
655 case ACER_CAP_BLUETOOTH:
656 switch (quirks->bluetooth) {
657 default:
658 err = ec_read(0xA, &result);
659 if (err)
660 return AE_ERROR;
661 *value = (result >> 4) & 0x1;
662 return AE_OK;
663 }
664 break;
665 case ACER_CAP_BRIGHTNESS:
666 switch (quirks->brightness) {
667 default:
668 err = ec_read(0x83, &result);
669 if (err)
670 return AE_ERROR;
671 *value = result;
672 return AE_OK;
673 }
674 break;
675 default:
676 return AE_ERROR;
677 }
678 return AE_OK;
679}
680
681static acpi_status AMW0_set_u32(u32 value, u32 cap)
682{
683 struct wmab_args args;
684
685 args.eax = ACER_AMW0_WRITE;
686 args.ebx = value ? (1<<8) : 0;
687 args.ecx = args.edx = 0;
688
689 switch (cap) {
690 case ACER_CAP_MAILLED:
691 if (value > 1)
692 return AE_BAD_PARAMETER;
693 args.ebx |= ACER_AMW0_MAILLED_MASK;
694 break;
695 case ACER_CAP_WIRELESS:
696 if (value > 1)
697 return AE_BAD_PARAMETER;
698 args.ebx |= ACER_AMW0_WIRELESS_MASK;
699 break;
700 case ACER_CAP_BLUETOOTH:
701 if (value > 1)
702 return AE_BAD_PARAMETER;
703 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
704 break;
705 case ACER_CAP_BRIGHTNESS:
706 if (value > max_brightness)
707 return AE_BAD_PARAMETER;
708 switch (quirks->brightness) {
709 default:
710 return ec_write(0x83, value);
711 break;
712 }
713 default:
714 return AE_ERROR;
715 }
716
717 /* Actually do the set */
718 return wmab_execute(&args, NULL);
719}
720
721static acpi_status AMW0_find_mailled(void)
722{
723 struct wmab_args args;
724 struct wmab_ret ret;
725 acpi_status status = AE_OK;
726 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
727 union acpi_object *obj;
728
729 args.eax = 0x86;
730 args.ebx = args.ecx = args.edx = 0;
731
732 status = wmab_execute(&args, &out);
733 if (ACPI_FAILURE(status))
734 return status;
735
736 obj = (union acpi_object *) out.pointer;
737 if (obj && obj->type == ACPI_TYPE_BUFFER &&
738 obj->buffer.length == sizeof(struct wmab_ret)) {
739 ret = *((struct wmab_ret *) obj->buffer.pointer);
740 } else {
741 kfree(out.pointer);
742 return AE_ERROR;
743 }
744
745 if (ret.eex & 0x1)
746 interface->capability |= ACER_CAP_MAILLED;
747
748 kfree(out.pointer);
749
750 return AE_OK;
751}
752
753static int AMW0_set_cap_acpi_check_device_found;
754
755static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
756 u32 level, void *context, void **retval)
757{
758 AMW0_set_cap_acpi_check_device_found = 1;
759 return AE_OK;
760}
761
762static const struct acpi_device_id norfkill_ids[] = {
763 { "VPC2004", 0},
764 { "IBM0068", 0},
765 { "LEN0068", 0},
766 { "SNY5001", 0}, /* sony-laptop in charge */
767 { "", 0},
768};
769
770static int AMW0_set_cap_acpi_check_device(void)
771{
772 const struct acpi_device_id *id;
773
774 for (id = norfkill_ids; id->id[0]; id++)
775 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
776 NULL, NULL);
777 return AMW0_set_cap_acpi_check_device_found;
778}
779
780static acpi_status AMW0_set_capabilities(void)
781{
782 struct wmab_args args;
783 struct wmab_ret ret;
784 acpi_status status;
785 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
786 union acpi_object *obj;
787
788 /*
789 * On laptops with this strange GUID (non Acer), normal probing doesn't
790 * work.
791 */
792 if (wmi_has_guid(AMW0_GUID2)) {
793 if ((quirks != &quirk_unknown) ||
794 !AMW0_set_cap_acpi_check_device())
795 interface->capability |= ACER_CAP_WIRELESS;
796 return AE_OK;
797 }
798
799 args.eax = ACER_AMW0_WRITE;
800 args.ecx = args.edx = 0;
801
802 args.ebx = 0xa2 << 8;
803 args.ebx |= ACER_AMW0_WIRELESS_MASK;
804
805 status = wmab_execute(&args, &out);
806 if (ACPI_FAILURE(status))
807 return status;
808
809 obj = out.pointer;
810 if (obj && obj->type == ACPI_TYPE_BUFFER &&
811 obj->buffer.length == sizeof(struct wmab_ret)) {
812 ret = *((struct wmab_ret *) obj->buffer.pointer);
813 } else {
814 status = AE_ERROR;
815 goto out;
816 }
817
818 if (ret.eax & 0x1)
819 interface->capability |= ACER_CAP_WIRELESS;
820
821 args.ebx = 2 << 8;
822 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
823
824 /*
825 * It's ok to use existing buffer for next wmab_execute call.
826 * But we need to kfree(out.pointer) if next wmab_execute fail.
827 */
828 status = wmab_execute(&args, &out);
829 if (ACPI_FAILURE(status))
830 goto out;
831
832 obj = (union acpi_object *) out.pointer;
833 if (obj && obj->type == ACPI_TYPE_BUFFER
834 && obj->buffer.length == sizeof(struct wmab_ret)) {
835 ret = *((struct wmab_ret *) obj->buffer.pointer);
836 } else {
837 status = AE_ERROR;
838 goto out;
839 }
840
841 if (ret.eax & 0x1)
842 interface->capability |= ACER_CAP_BLUETOOTH;
843
844 /*
845 * This appears to be safe to enable, since all Wistron based laptops
846 * appear to use the same EC register for brightness, even if they
847 * differ for wireless, etc
848 */
849 if (quirks->brightness >= 0)
850 interface->capability |= ACER_CAP_BRIGHTNESS;
851
852 status = AE_OK;
853out:
854 kfree(out.pointer);
855 return status;
856}
857
858static struct wmi_interface AMW0_interface = {
859 .type = ACER_AMW0,
860};
861
862static struct wmi_interface AMW0_V2_interface = {
863 .type = ACER_AMW0_V2,
864};
865
866/*
867 * New interface (The WMID interface)
868 */
869static acpi_status
870WMI_execute_u32(u32 method_id, u32 in, u32 *out)
871{
872 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
873 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
874 union acpi_object *obj;
875 u32 tmp;
876 acpi_status status;
877
878 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
879
880 if (ACPI_FAILURE(status))
881 return status;
882
883 obj = (union acpi_object *) result.pointer;
884 if (obj && obj->type == ACPI_TYPE_BUFFER &&
885 (obj->buffer.length == sizeof(u32) ||
886 obj->buffer.length == sizeof(u64))) {
887 tmp = *((u32 *) obj->buffer.pointer);
888 } else if (obj->type == ACPI_TYPE_INTEGER) {
889 tmp = (u32) obj->integer.value;
890 } else {
891 tmp = 0;
892 }
893
894 if (out)
895 *out = tmp;
896
897 kfree(result.pointer);
898
899 return status;
900}
901
902static acpi_status WMID_get_u32(u32 *value, u32 cap)
903{
904 acpi_status status;
905 u8 tmp;
906 u32 result, method_id = 0;
907
908 switch (cap) {
909 case ACER_CAP_WIRELESS:
910 method_id = ACER_WMID_GET_WIRELESS_METHODID;
911 break;
912 case ACER_CAP_BLUETOOTH:
913 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
914 break;
915 case ACER_CAP_BRIGHTNESS:
916 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
917 break;
918 case ACER_CAP_THREEG:
919 method_id = ACER_WMID_GET_THREEG_METHODID;
920 break;
921 case ACER_CAP_MAILLED:
922 if (quirks->mailled == 1) {
923 ec_read(0x9f, &tmp);
924 *value = tmp & 0x1;
925 return 0;
926 }
927 default:
928 return AE_ERROR;
929 }
930 status = WMI_execute_u32(method_id, 0, &result);
931
932 if (ACPI_SUCCESS(status))
933 *value = (u8)result;
934
935 return status;
936}
937
938static acpi_status WMID_set_u32(u32 value, u32 cap)
939{
940 u32 method_id = 0;
941 char param;
942
943 switch (cap) {
944 case ACER_CAP_BRIGHTNESS:
945 if (value > max_brightness)
946 return AE_BAD_PARAMETER;
947 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
948 break;
949 case ACER_CAP_WIRELESS:
950 if (value > 1)
951 return AE_BAD_PARAMETER;
952 method_id = ACER_WMID_SET_WIRELESS_METHODID;
953 break;
954 case ACER_CAP_BLUETOOTH:
955 if (value > 1)
956 return AE_BAD_PARAMETER;
957 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
958 break;
959 case ACER_CAP_THREEG:
960 if (value > 1)
961 return AE_BAD_PARAMETER;
962 method_id = ACER_WMID_SET_THREEG_METHODID;
963 break;
964 case ACER_CAP_MAILLED:
965 if (value > 1)
966 return AE_BAD_PARAMETER;
967 if (quirks->mailled == 1) {
968 param = value ? 0x92 : 0x93;
969 i8042_lock_chip();
970 i8042_command(¶m, 0x1059);
971 i8042_unlock_chip();
972 return 0;
973 }
974 break;
975 default:
976 return AE_ERROR;
977 }
978 return WMI_execute_u32(method_id, (u32)value, NULL);
979}
980
981static acpi_status wmid3_get_device_status(u32 *value, u16 device)
982{
983 struct wmid3_gds_return_value return_value;
984 acpi_status status;
985 union acpi_object *obj;
986 struct wmid3_gds_get_input_param params = {
987 .function_num = 0x1,
988 .hotkey_number = commun_fn_key_number,
989 .devices = device,
990 };
991 struct acpi_buffer input = {
992 sizeof(struct wmid3_gds_get_input_param),
993 ¶ms
994 };
995 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
996
997 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
998 if (ACPI_FAILURE(status))
999 return status;
1000
1001 obj = output.pointer;
1002
1003 if (!obj)
1004 return AE_ERROR;
1005 else if (obj->type != ACPI_TYPE_BUFFER) {
1006 kfree(obj);
1007 return AE_ERROR;
1008 }
1009 if (obj->buffer.length != 8) {
1010 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1011 kfree(obj);
1012 return AE_ERROR;
1013 }
1014
1015 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1016 kfree(obj);
1017
1018 if (return_value.error_code || return_value.ec_return_value)
1019 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1020 device,
1021 return_value.error_code,
1022 return_value.ec_return_value);
1023 else
1024 *value = !!(return_value.devices & device);
1025
1026 return status;
1027}
1028
1029static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1030{
1031 u16 device;
1032
1033 switch (cap) {
1034 case ACER_CAP_WIRELESS:
1035 device = ACER_WMID3_GDS_WIRELESS;
1036 break;
1037 case ACER_CAP_BLUETOOTH:
1038 device = ACER_WMID3_GDS_BLUETOOTH;
1039 break;
1040 case ACER_CAP_THREEG:
1041 device = ACER_WMID3_GDS_THREEG;
1042 break;
1043 default:
1044 return AE_ERROR;
1045 }
1046 return wmid3_get_device_status(value, device);
1047}
1048
1049static acpi_status wmid3_set_device_status(u32 value, u16 device)
1050{
1051 struct wmid3_gds_return_value return_value;
1052 acpi_status status;
1053 union acpi_object *obj;
1054 u16 devices;
1055 struct wmid3_gds_get_input_param get_params = {
1056 .function_num = 0x1,
1057 .hotkey_number = commun_fn_key_number,
1058 .devices = commun_func_bitmap,
1059 };
1060 struct acpi_buffer get_input = {
1061 sizeof(struct wmid3_gds_get_input_param),
1062 &get_params
1063 };
1064 struct wmid3_gds_set_input_param set_params = {
1065 .function_num = 0x2,
1066 .hotkey_number = commun_fn_key_number,
1067 .devices = commun_func_bitmap,
1068 };
1069 struct acpi_buffer set_input = {
1070 sizeof(struct wmid3_gds_set_input_param),
1071 &set_params
1072 };
1073 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1074 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1075
1076 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1077 if (ACPI_FAILURE(status))
1078 return status;
1079
1080 obj = output.pointer;
1081
1082 if (!obj)
1083 return AE_ERROR;
1084 else if (obj->type != ACPI_TYPE_BUFFER) {
1085 kfree(obj);
1086 return AE_ERROR;
1087 }
1088 if (obj->buffer.length != 8) {
1089 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1090 kfree(obj);
1091 return AE_ERROR;
1092 }
1093
1094 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1095 kfree(obj);
1096
1097 if (return_value.error_code || return_value.ec_return_value) {
1098 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1099 return_value.error_code,
1100 return_value.ec_return_value);
1101 return status;
1102 }
1103
1104 devices = return_value.devices;
1105 set_params.devices = (value) ? (devices | device) : (devices & ~device);
1106
1107 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1108 if (ACPI_FAILURE(status))
1109 return status;
1110
1111 obj = output2.pointer;
1112
1113 if (!obj)
1114 return AE_ERROR;
1115 else if (obj->type != ACPI_TYPE_BUFFER) {
1116 kfree(obj);
1117 return AE_ERROR;
1118 }
1119 if (obj->buffer.length != 4) {
1120 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1121 kfree(obj);
1122 return AE_ERROR;
1123 }
1124
1125 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1126 kfree(obj);
1127
1128 if (return_value.error_code || return_value.ec_return_value)
1129 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1130 return_value.error_code,
1131 return_value.ec_return_value);
1132
1133 return status;
1134}
1135
1136static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1137{
1138 u16 device;
1139
1140 switch (cap) {
1141 case ACER_CAP_WIRELESS:
1142 device = ACER_WMID3_GDS_WIRELESS;
1143 break;
1144 case ACER_CAP_BLUETOOTH:
1145 device = ACER_WMID3_GDS_BLUETOOTH;
1146 break;
1147 case ACER_CAP_THREEG:
1148 device = ACER_WMID3_GDS_THREEG;
1149 break;
1150 default:
1151 return AE_ERROR;
1152 }
1153 return wmid3_set_device_status(value, device);
1154}
1155
1156static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1157{
1158 struct hotkey_function_type_aa *type_aa;
1159
1160 /* We are looking for OEM-specific Type AAh */
1161 if (header->type != 0xAA)
1162 return;
1163
1164 has_type_aa = true;
1165 type_aa = (struct hotkey_function_type_aa *) header;
1166
1167 pr_info("Function bitmap for Communication Button: 0x%x\n",
1168 type_aa->commun_func_bitmap);
1169 commun_func_bitmap = type_aa->commun_func_bitmap;
1170
1171 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1172 interface->capability |= ACER_CAP_WIRELESS;
1173 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1174 interface->capability |= ACER_CAP_THREEG;
1175 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1176 interface->capability |= ACER_CAP_BLUETOOTH;
1177
1178 commun_fn_key_number = type_aa->commun_fn_key_number;
1179}
1180
1181static acpi_status WMID_set_capabilities(void)
1182{
1183 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1184 union acpi_object *obj;
1185 acpi_status status;
1186 u32 devices;
1187
1188 status = wmi_query_block(WMID_GUID2, 1, &out);
1189 if (ACPI_FAILURE(status))
1190 return status;
1191
1192 obj = (union acpi_object *) out.pointer;
1193 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1194 (obj->buffer.length == sizeof(u32) ||
1195 obj->buffer.length == sizeof(u64))) {
1196 devices = *((u32 *) obj->buffer.pointer);
1197 } else if (obj->type == ACPI_TYPE_INTEGER) {
1198 devices = (u32) obj->integer.value;
1199 } else {
1200 kfree(out.pointer);
1201 return AE_ERROR;
1202 }
1203
1204 pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1205 if (devices & 0x07)
1206 interface->capability |= ACER_CAP_WIRELESS;
1207 if (devices & 0x40)
1208 interface->capability |= ACER_CAP_THREEG;
1209 if (devices & 0x10)
1210 interface->capability |= ACER_CAP_BLUETOOTH;
1211
1212 if (!(devices & 0x20))
1213 max_brightness = 0x9;
1214
1215 kfree(out.pointer);
1216 return status;
1217}
1218
1219static struct wmi_interface wmid_interface = {
1220 .type = ACER_WMID,
1221};
1222
1223static struct wmi_interface wmid_v2_interface = {
1224 .type = ACER_WMID_v2,
1225};
1226
1227/*
1228 * Generic Device (interface-independent)
1229 */
1230
1231static acpi_status get_u32(u32 *value, u32 cap)
1232{
1233 acpi_status status = AE_ERROR;
1234
1235 switch (interface->type) {
1236 case ACER_AMW0:
1237 status = AMW0_get_u32(value, cap);
1238 break;
1239 case ACER_AMW0_V2:
1240 if (cap == ACER_CAP_MAILLED) {
1241 status = AMW0_get_u32(value, cap);
1242 break;
1243 }
1244 case ACER_WMID:
1245 status = WMID_get_u32(value, cap);
1246 break;
1247 case ACER_WMID_v2:
1248 if (cap & (ACER_CAP_WIRELESS |
1249 ACER_CAP_BLUETOOTH |
1250 ACER_CAP_THREEG))
1251 status = wmid_v2_get_u32(value, cap);
1252 else if (wmi_has_guid(WMID_GUID2))
1253 status = WMID_get_u32(value, cap);
1254 break;
1255 }
1256
1257 return status;
1258}
1259
1260static acpi_status set_u32(u32 value, u32 cap)
1261{
1262 acpi_status status;
1263
1264 if (interface->capability & cap) {
1265 switch (interface->type) {
1266 case ACER_AMW0:
1267 return AMW0_set_u32(value, cap);
1268 case ACER_AMW0_V2:
1269 if (cap == ACER_CAP_MAILLED)
1270 return AMW0_set_u32(value, cap);
1271
1272 /*
1273 * On some models, some WMID methods don't toggle
1274 * properly. For those cases, we want to run the AMW0
1275 * method afterwards to be certain we've really toggled
1276 * the device state.
1277 */
1278 if (cap == ACER_CAP_WIRELESS ||
1279 cap == ACER_CAP_BLUETOOTH) {
1280 status = WMID_set_u32(value, cap);
1281 if (ACPI_FAILURE(status))
1282 return status;
1283
1284 return AMW0_set_u32(value, cap);
1285 }
1286 case ACER_WMID:
1287 return WMID_set_u32(value, cap);
1288 case ACER_WMID_v2:
1289 if (cap & (ACER_CAP_WIRELESS |
1290 ACER_CAP_BLUETOOTH |
1291 ACER_CAP_THREEG))
1292 return wmid_v2_set_u32(value, cap);
1293 else if (wmi_has_guid(WMID_GUID2))
1294 return WMID_set_u32(value, cap);
1295 default:
1296 return AE_BAD_PARAMETER;
1297 }
1298 }
1299 return AE_BAD_PARAMETER;
1300}
1301
1302static void __init acer_commandline_init(void)
1303{
1304 /*
1305 * These will all fail silently if the value given is invalid, or the
1306 * capability isn't available on the given interface
1307 */
1308 if (mailled >= 0)
1309 set_u32(mailled, ACER_CAP_MAILLED);
1310 if (!has_type_aa && threeg >= 0)
1311 set_u32(threeg, ACER_CAP_THREEG);
1312 if (brightness >= 0)
1313 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1314}
1315
1316/*
1317 * LED device (Mail LED only, no other LEDs known yet)
1318 */
1319static void mail_led_set(struct led_classdev *led_cdev,
1320enum led_brightness value)
1321{
1322 set_u32(value, ACER_CAP_MAILLED);
1323}
1324
1325static struct led_classdev mail_led = {
1326 .name = "acer-wmi::mail",
1327 .brightness_set = mail_led_set,
1328};
1329
1330static int __devinit acer_led_init(struct device *dev)
1331{
1332 return led_classdev_register(dev, &mail_led);
1333}
1334
1335static void acer_led_exit(void)
1336{
1337 set_u32(LED_OFF, ACER_CAP_MAILLED);
1338 led_classdev_unregister(&mail_led);
1339}
1340
1341/*
1342 * Backlight device
1343 */
1344static struct backlight_device *acer_backlight_device;
1345
1346static int read_brightness(struct backlight_device *bd)
1347{
1348 u32 value;
1349 get_u32(&value, ACER_CAP_BRIGHTNESS);
1350 return value;
1351}
1352
1353static int update_bl_status(struct backlight_device *bd)
1354{
1355 int intensity = bd->props.brightness;
1356
1357 if (bd->props.power != FB_BLANK_UNBLANK)
1358 intensity = 0;
1359 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1360 intensity = 0;
1361
1362 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1363
1364 return 0;
1365}
1366
1367static const struct backlight_ops acer_bl_ops = {
1368 .get_brightness = read_brightness,
1369 .update_status = update_bl_status,
1370};
1371
1372static int __devinit acer_backlight_init(struct device *dev)
1373{
1374 struct backlight_properties props;
1375 struct backlight_device *bd;
1376
1377 memset(&props, 0, sizeof(struct backlight_properties));
1378 props.type = BACKLIGHT_PLATFORM;
1379 props.max_brightness = max_brightness;
1380 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1381 &props);
1382 if (IS_ERR(bd)) {
1383 pr_err("Could not register Acer backlight device\n");
1384 acer_backlight_device = NULL;
1385 return PTR_ERR(bd);
1386 }
1387
1388 acer_backlight_device = bd;
1389
1390 bd->props.power = FB_BLANK_UNBLANK;
1391 bd->props.brightness = read_brightness(bd);
1392 backlight_update_status(bd);
1393 return 0;
1394}
1395
1396static void acer_backlight_exit(void)
1397{
1398 backlight_device_unregister(acer_backlight_device);
1399}
1400
1401/*
1402 * Rfkill devices
1403 */
1404static void acer_rfkill_update(struct work_struct *ignored);
1405static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1406static void acer_rfkill_update(struct work_struct *ignored)
1407{
1408 u32 state;
1409 acpi_status status;
1410
1411 if (has_cap(ACER_CAP_WIRELESS)) {
1412 status = get_u32(&state, ACER_CAP_WIRELESS);
1413 if (ACPI_SUCCESS(status)) {
1414 if (quirks->wireless == 3)
1415 rfkill_set_hw_state(wireless_rfkill, !state);
1416 else
1417 rfkill_set_sw_state(wireless_rfkill, !state);
1418 }
1419 }
1420
1421 if (has_cap(ACER_CAP_BLUETOOTH)) {
1422 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1423 if (ACPI_SUCCESS(status))
1424 rfkill_set_sw_state(bluetooth_rfkill, !state);
1425 }
1426
1427 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1428 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1429 if (ACPI_SUCCESS(status))
1430 rfkill_set_sw_state(threeg_rfkill, !state);
1431 }
1432
1433 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1434}
1435
1436static int acer_rfkill_set(void *data, bool blocked)
1437{
1438 acpi_status status;
1439 u32 cap = (unsigned long)data;
1440
1441 if (rfkill_inited) {
1442 status = set_u32(!blocked, cap);
1443 if (ACPI_FAILURE(status))
1444 return -ENODEV;
1445 }
1446
1447 return 0;
1448}
1449
1450static const struct rfkill_ops acer_rfkill_ops = {
1451 .set_block = acer_rfkill_set,
1452};
1453
1454static struct rfkill *acer_rfkill_register(struct device *dev,
1455 enum rfkill_type type,
1456 char *name, u32 cap)
1457{
1458 int err;
1459 struct rfkill *rfkill_dev;
1460 u32 state;
1461 acpi_status status;
1462
1463 rfkill_dev = rfkill_alloc(name, dev, type,
1464 &acer_rfkill_ops,
1465 (void *)(unsigned long)cap);
1466 if (!rfkill_dev)
1467 return ERR_PTR(-ENOMEM);
1468
1469 status = get_u32(&state, cap);
1470
1471 err = rfkill_register(rfkill_dev);
1472 if (err) {
1473 rfkill_destroy(rfkill_dev);
1474 return ERR_PTR(err);
1475 }
1476
1477 if (ACPI_SUCCESS(status))
1478 rfkill_set_sw_state(rfkill_dev, !state);
1479
1480 return rfkill_dev;
1481}
1482
1483static int acer_rfkill_init(struct device *dev)
1484{
1485 int err;
1486
1487 if (has_cap(ACER_CAP_WIRELESS)) {
1488 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1489 "acer-wireless", ACER_CAP_WIRELESS);
1490 if (IS_ERR(wireless_rfkill)) {
1491 err = PTR_ERR(wireless_rfkill);
1492 goto error_wireless;
1493 }
1494 }
1495
1496 if (has_cap(ACER_CAP_BLUETOOTH)) {
1497 bluetooth_rfkill = acer_rfkill_register(dev,
1498 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1499 ACER_CAP_BLUETOOTH);
1500 if (IS_ERR(bluetooth_rfkill)) {
1501 err = PTR_ERR(bluetooth_rfkill);
1502 goto error_bluetooth;
1503 }
1504 }
1505
1506 if (has_cap(ACER_CAP_THREEG)) {
1507 threeg_rfkill = acer_rfkill_register(dev,
1508 RFKILL_TYPE_WWAN, "acer-threeg",
1509 ACER_CAP_THREEG);
1510 if (IS_ERR(threeg_rfkill)) {
1511 err = PTR_ERR(threeg_rfkill);
1512 goto error_threeg;
1513 }
1514 }
1515
1516 rfkill_inited = true;
1517
1518 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1519 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1520 schedule_delayed_work(&acer_rfkill_work,
1521 round_jiffies_relative(HZ));
1522
1523 return 0;
1524
1525error_threeg:
1526 if (has_cap(ACER_CAP_BLUETOOTH)) {
1527 rfkill_unregister(bluetooth_rfkill);
1528 rfkill_destroy(bluetooth_rfkill);
1529 }
1530error_bluetooth:
1531 if (has_cap(ACER_CAP_WIRELESS)) {
1532 rfkill_unregister(wireless_rfkill);
1533 rfkill_destroy(wireless_rfkill);
1534 }
1535error_wireless:
1536 return err;
1537}
1538
1539static void acer_rfkill_exit(void)
1540{
1541 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1542 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1543 cancel_delayed_work_sync(&acer_rfkill_work);
1544
1545 if (has_cap(ACER_CAP_WIRELESS)) {
1546 rfkill_unregister(wireless_rfkill);
1547 rfkill_destroy(wireless_rfkill);
1548 }
1549
1550 if (has_cap(ACER_CAP_BLUETOOTH)) {
1551 rfkill_unregister(bluetooth_rfkill);
1552 rfkill_destroy(bluetooth_rfkill);
1553 }
1554
1555 if (has_cap(ACER_CAP_THREEG)) {
1556 rfkill_unregister(threeg_rfkill);
1557 rfkill_destroy(threeg_rfkill);
1558 }
1559 return;
1560}
1561
1562/*
1563 * sysfs interface
1564 */
1565static ssize_t show_bool_threeg(struct device *dev,
1566 struct device_attribute *attr, char *buf)
1567{
1568 u32 result; \
1569 acpi_status status;
1570
1571 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1572 current->comm);
1573 status = get_u32(&result, ACER_CAP_THREEG);
1574 if (ACPI_SUCCESS(status))
1575 return sprintf(buf, "%u\n", result);
1576 return sprintf(buf, "Read error\n");
1577}
1578
1579static ssize_t set_bool_threeg(struct device *dev,
1580 struct device_attribute *attr, const char *buf, size_t count)
1581{
1582 u32 tmp = simple_strtoul(buf, NULL, 10);
1583 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1584 pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1585 current->comm);
1586 if (ACPI_FAILURE(status))
1587 return -EINVAL;
1588 return count;
1589}
1590static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1591 set_bool_threeg);
1592
1593static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1594 char *buf)
1595{
1596 pr_info("This interface sysfs will be removed in 2012 - used by: %s\n",
1597 current->comm);
1598 switch (interface->type) {
1599 case ACER_AMW0:
1600 return sprintf(buf, "AMW0\n");
1601 case ACER_AMW0_V2:
1602 return sprintf(buf, "AMW0 v2\n");
1603 case ACER_WMID:
1604 return sprintf(buf, "WMID\n");
1605 case ACER_WMID_v2:
1606 return sprintf(buf, "WMID v2\n");
1607 default:
1608 return sprintf(buf, "Error!\n");
1609 }
1610}
1611
1612static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1613
1614static void acer_wmi_notify(u32 value, void *context)
1615{
1616 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1617 union acpi_object *obj;
1618 struct event_return_value return_value;
1619 acpi_status status;
1620 u16 device_state;
1621 const struct key_entry *key;
1622
1623 status = wmi_get_event_data(value, &response);
1624 if (status != AE_OK) {
1625 pr_warn("bad event status 0x%x\n", status);
1626 return;
1627 }
1628
1629 obj = (union acpi_object *)response.pointer;
1630
1631 if (!obj)
1632 return;
1633 if (obj->type != ACPI_TYPE_BUFFER) {
1634 pr_warn("Unknown response received %d\n", obj->type);
1635 kfree(obj);
1636 return;
1637 }
1638 if (obj->buffer.length != 8) {
1639 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1640 kfree(obj);
1641 return;
1642 }
1643
1644 return_value = *((struct event_return_value *)obj->buffer.pointer);
1645 kfree(obj);
1646
1647 switch (return_value.function) {
1648 case WMID_HOTKEY_EVENT:
1649 device_state = return_value.device_state;
1650 pr_debug("device state: 0x%x\n", device_state);
1651
1652 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1653 return_value.key_num);
1654 if (!key) {
1655 pr_warn("Unknown key number - 0x%x\n",
1656 return_value.key_num);
1657 } else {
1658 switch (key->keycode) {
1659 case KEY_WLAN:
1660 case KEY_BLUETOOTH:
1661 if (has_cap(ACER_CAP_WIRELESS))
1662 rfkill_set_sw_state(wireless_rfkill,
1663 !(device_state & ACER_WMID3_GDS_WIRELESS));
1664 if (has_cap(ACER_CAP_THREEG))
1665 rfkill_set_sw_state(threeg_rfkill,
1666 !(device_state & ACER_WMID3_GDS_THREEG));
1667 if (has_cap(ACER_CAP_BLUETOOTH))
1668 rfkill_set_sw_state(bluetooth_rfkill,
1669 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1670 break;
1671 }
1672 sparse_keymap_report_entry(acer_wmi_input_dev, key,
1673 1, true);
1674 }
1675 break;
1676 default:
1677 pr_warn("Unknown function number - %d - %d\n",
1678 return_value.function, return_value.key_num);
1679 break;
1680 }
1681}
1682
1683static acpi_status
1684wmid3_set_lm_mode(struct lm_input_params *params,
1685 struct lm_return_value *return_value)
1686{
1687 acpi_status status;
1688 union acpi_object *obj;
1689
1690 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1691 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1692
1693 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1694 if (ACPI_FAILURE(status))
1695 return status;
1696
1697 obj = output.pointer;
1698
1699 if (!obj)
1700 return AE_ERROR;
1701 else if (obj->type != ACPI_TYPE_BUFFER) {
1702 kfree(obj);
1703 return AE_ERROR;
1704 }
1705 if (obj->buffer.length != 4) {
1706 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1707 kfree(obj);
1708 return AE_ERROR;
1709 }
1710
1711 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1712 kfree(obj);
1713
1714 return status;
1715}
1716
1717static int acer_wmi_enable_ec_raw(void)
1718{
1719 struct lm_return_value return_value;
1720 acpi_status status;
1721 struct lm_input_params params = {
1722 .function_num = 0x1,
1723 .commun_devices = 0xFFFF,
1724 .devices = 0xFFFF,
1725 .lm_status = 0x00, /* Launch Manager Deactive */
1726 };
1727
1728 status = wmid3_set_lm_mode(¶ms, &return_value);
1729
1730 if (return_value.error_code || return_value.ec_return_value)
1731 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1732 return_value.error_code,
1733 return_value.ec_return_value);
1734 else
1735 pr_info("Enabled EC raw mode\n");
1736
1737 return status;
1738}
1739
1740static int acer_wmi_enable_lm(void)
1741{
1742 struct lm_return_value return_value;
1743 acpi_status status;
1744 struct lm_input_params params = {
1745 .function_num = 0x1,
1746 .commun_devices = 0xFFFF,
1747 .devices = 0xFFFF,
1748 .lm_status = 0x01, /* Launch Manager Active */
1749 };
1750
1751 status = wmid3_set_lm_mode(¶ms, &return_value);
1752
1753 if (return_value.error_code || return_value.ec_return_value)
1754 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1755 return_value.error_code,
1756 return_value.ec_return_value);
1757
1758 return status;
1759}
1760
1761static int __init acer_wmi_input_setup(void)
1762{
1763 acpi_status status;
1764 int err;
1765
1766 acer_wmi_input_dev = input_allocate_device();
1767 if (!acer_wmi_input_dev)
1768 return -ENOMEM;
1769
1770 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1771 acer_wmi_input_dev->phys = "wmi/input0";
1772 acer_wmi_input_dev->id.bustype = BUS_HOST;
1773
1774 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1775 if (err)
1776 goto err_free_dev;
1777
1778 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1779 acer_wmi_notify, NULL);
1780 if (ACPI_FAILURE(status)) {
1781 err = -EIO;
1782 goto err_free_keymap;
1783 }
1784
1785 err = input_register_device(acer_wmi_input_dev);
1786 if (err)
1787 goto err_uninstall_notifier;
1788
1789 return 0;
1790
1791err_uninstall_notifier:
1792 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1793err_free_keymap:
1794 sparse_keymap_free(acer_wmi_input_dev);
1795err_free_dev:
1796 input_free_device(acer_wmi_input_dev);
1797 return err;
1798}
1799
1800static void acer_wmi_input_destroy(void)
1801{
1802 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1803 sparse_keymap_free(acer_wmi_input_dev);
1804 input_unregister_device(acer_wmi_input_dev);
1805}
1806
1807/*
1808 * debugfs functions
1809 */
1810static u32 get_wmid_devices(void)
1811{
1812 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1813 union acpi_object *obj;
1814 acpi_status status;
1815 u32 devices = 0;
1816
1817 status = wmi_query_block(WMID_GUID2, 1, &out);
1818 if (ACPI_FAILURE(status))
1819 return 0;
1820
1821 obj = (union acpi_object *) out.pointer;
1822 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1823 (obj->buffer.length == sizeof(u32) ||
1824 obj->buffer.length == sizeof(u64))) {
1825 devices = *((u32 *) obj->buffer.pointer);
1826 } else if (obj->type == ACPI_TYPE_INTEGER) {
1827 devices = (u32) obj->integer.value;
1828 }
1829
1830 kfree(out.pointer);
1831 return devices;
1832}
1833
1834/*
1835 * Platform device
1836 */
1837static int __devinit acer_platform_probe(struct platform_device *device)
1838{
1839 int err;
1840
1841 if (has_cap(ACER_CAP_MAILLED)) {
1842 err = acer_led_init(&device->dev);
1843 if (err)
1844 goto error_mailled;
1845 }
1846
1847 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1848 err = acer_backlight_init(&device->dev);
1849 if (err)
1850 goto error_brightness;
1851 }
1852
1853 err = acer_rfkill_init(&device->dev);
1854 if (err)
1855 goto error_rfkill;
1856
1857 return err;
1858
1859error_rfkill:
1860 if (has_cap(ACER_CAP_BRIGHTNESS))
1861 acer_backlight_exit();
1862error_brightness:
1863 if (has_cap(ACER_CAP_MAILLED))
1864 acer_led_exit();
1865error_mailled:
1866 return err;
1867}
1868
1869static int acer_platform_remove(struct platform_device *device)
1870{
1871 if (has_cap(ACER_CAP_MAILLED))
1872 acer_led_exit();
1873 if (has_cap(ACER_CAP_BRIGHTNESS))
1874 acer_backlight_exit();
1875
1876 acer_rfkill_exit();
1877 return 0;
1878}
1879
1880static int acer_platform_suspend(struct platform_device *dev,
1881pm_message_t state)
1882{
1883 u32 value;
1884 struct acer_data *data = &interface->data;
1885
1886 if (!data)
1887 return -ENOMEM;
1888
1889 if (has_cap(ACER_CAP_MAILLED)) {
1890 get_u32(&value, ACER_CAP_MAILLED);
1891 set_u32(LED_OFF, ACER_CAP_MAILLED);
1892 data->mailled = value;
1893 }
1894
1895 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1896 get_u32(&value, ACER_CAP_BRIGHTNESS);
1897 data->brightness = value;
1898 }
1899
1900 return 0;
1901}
1902
1903static int acer_platform_resume(struct platform_device *device)
1904{
1905 struct acer_data *data = &interface->data;
1906
1907 if (!data)
1908 return -ENOMEM;
1909
1910 if (has_cap(ACER_CAP_MAILLED))
1911 set_u32(data->mailled, ACER_CAP_MAILLED);
1912
1913 if (has_cap(ACER_CAP_BRIGHTNESS))
1914 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1915
1916 return 0;
1917}
1918
1919static void acer_platform_shutdown(struct platform_device *device)
1920{
1921 struct acer_data *data = &interface->data;
1922
1923 if (!data)
1924 return;
1925
1926 if (has_cap(ACER_CAP_MAILLED))
1927 set_u32(LED_OFF, ACER_CAP_MAILLED);
1928}
1929
1930static struct platform_driver acer_platform_driver = {
1931 .driver = {
1932 .name = "acer-wmi",
1933 .owner = THIS_MODULE,
1934 },
1935 .probe = acer_platform_probe,
1936 .remove = acer_platform_remove,
1937 .suspend = acer_platform_suspend,
1938 .resume = acer_platform_resume,
1939 .shutdown = acer_platform_shutdown,
1940};
1941
1942static struct platform_device *acer_platform_device;
1943
1944static int remove_sysfs(struct platform_device *device)
1945{
1946 if (has_cap(ACER_CAP_THREEG))
1947 device_remove_file(&device->dev, &dev_attr_threeg);
1948
1949 device_remove_file(&device->dev, &dev_attr_interface);
1950
1951 return 0;
1952}
1953
1954static int create_sysfs(void)
1955{
1956 int retval = -ENOMEM;
1957
1958 if (has_cap(ACER_CAP_THREEG)) {
1959 retval = device_create_file(&acer_platform_device->dev,
1960 &dev_attr_threeg);
1961 if (retval)
1962 goto error_sysfs;
1963 }
1964
1965 retval = device_create_file(&acer_platform_device->dev,
1966 &dev_attr_interface);
1967 if (retval)
1968 goto error_sysfs;
1969
1970 return 0;
1971
1972error_sysfs:
1973 remove_sysfs(acer_platform_device);
1974 return retval;
1975}
1976
1977static void remove_debugfs(void)
1978{
1979 debugfs_remove(interface->debug.devices);
1980 debugfs_remove(interface->debug.root);
1981}
1982
1983static int create_debugfs(void)
1984{
1985 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1986 if (!interface->debug.root) {
1987 pr_err("Failed to create debugfs directory");
1988 return -ENOMEM;
1989 }
1990
1991 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1992 interface->debug.root,
1993 &interface->debug.wmid_devices);
1994 if (!interface->debug.devices)
1995 goto error_debugfs;
1996
1997 return 0;
1998
1999error_debugfs:
2000 remove_debugfs();
2001 return -ENOMEM;
2002}
2003
2004static int __init acer_wmi_init(void)
2005{
2006 int err;
2007
2008 pr_info("Acer Laptop ACPI-WMI Extras\n");
2009
2010 if (dmi_check_system(acer_blacklist)) {
2011 pr_info("Blacklisted hardware detected - not loading\n");
2012 return -ENODEV;
2013 }
2014
2015 find_quirks();
2016
2017 /*
2018 * Detect which ACPI-WMI interface we're using.
2019 */
2020 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2021 interface = &AMW0_V2_interface;
2022
2023 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2024 interface = &wmid_interface;
2025
2026 if (wmi_has_guid(WMID_GUID3))
2027 interface = &wmid_v2_interface;
2028
2029 if (interface)
2030 dmi_walk(type_aa_dmi_decode, NULL);
2031
2032 if (wmi_has_guid(WMID_GUID2) && interface) {
2033 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2034 pr_err("Unable to detect available WMID devices\n");
2035 return -ENODEV;
2036 }
2037 /* WMID always provides brightness methods */
2038 interface->capability |= ACER_CAP_BRIGHTNESS;
2039 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2040 pr_err("No WMID device detection method found\n");
2041 return -ENODEV;
2042 }
2043
2044 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2045 interface = &AMW0_interface;
2046
2047 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2048 pr_err("Unable to detect available AMW0 devices\n");
2049 return -ENODEV;
2050 }
2051 }
2052
2053 if (wmi_has_guid(AMW0_GUID1))
2054 AMW0_find_mailled();
2055
2056 if (!interface) {
2057 pr_err("No or unsupported WMI interface, unable to load\n");
2058 return -ENODEV;
2059 }
2060
2061 set_quirks();
2062
2063 if (acpi_video_backlight_support()) {
2064 if (dmi_check_system(video_vendor_dmi_table)) {
2065 acpi_video_unregister();
2066 } else {
2067 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2068 pr_info("Brightness must be controlled by "
2069 "acpi video driver\n");
2070 }
2071 }
2072
2073 if (wmi_has_guid(WMID_GUID3)) {
2074 if (ec_raw_mode) {
2075 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2076 pr_err("Cannot enable EC raw mode\n");
2077 return -ENODEV;
2078 }
2079 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2080 pr_err("Cannot enable Launch Manager mode\n");
2081 return -ENODEV;
2082 }
2083 } else if (ec_raw_mode) {
2084 pr_info("No WMID EC raw mode enable method\n");
2085 }
2086
2087 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2088 err = acer_wmi_input_setup();
2089 if (err)
2090 return err;
2091 }
2092
2093 err = platform_driver_register(&acer_platform_driver);
2094 if (err) {
2095 pr_err("Unable to register platform driver\n");
2096 goto error_platform_register;
2097 }
2098
2099 acer_platform_device = platform_device_alloc("acer-wmi", -1);
2100 if (!acer_platform_device) {
2101 err = -ENOMEM;
2102 goto error_device_alloc;
2103 }
2104
2105 err = platform_device_add(acer_platform_device);
2106 if (err)
2107 goto error_device_add;
2108
2109 err = create_sysfs();
2110 if (err)
2111 goto error_create_sys;
2112
2113 if (wmi_has_guid(WMID_GUID2)) {
2114 interface->debug.wmid_devices = get_wmid_devices();
2115 err = create_debugfs();
2116 if (err)
2117 goto error_create_debugfs;
2118 }
2119
2120 /* Override any initial settings with values from the commandline */
2121 acer_commandline_init();
2122
2123 return 0;
2124
2125error_create_debugfs:
2126 remove_sysfs(acer_platform_device);
2127error_create_sys:
2128 platform_device_del(acer_platform_device);
2129error_device_add:
2130 platform_device_put(acer_platform_device);
2131error_device_alloc:
2132 platform_driver_unregister(&acer_platform_driver);
2133error_platform_register:
2134 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2135 acer_wmi_input_destroy();
2136
2137 return err;
2138}
2139
2140static void __exit acer_wmi_exit(void)
2141{
2142 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2143 acer_wmi_input_destroy();
2144
2145 remove_sysfs(acer_platform_device);
2146 remove_debugfs();
2147 platform_device_unregister(acer_platform_device);
2148 platform_driver_unregister(&acer_platform_driver);
2149
2150 pr_info("Acer Laptop WMI Extras unloaded\n");
2151 return;
2152}
2153
2154module_init(acer_wmi_init);
2155module_exit(acer_wmi_exit);