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