?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
acer-wmi: allow 64-bits return buffer from WMI methods
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / platform / x86 / acer-wmi.c
blob48219117823b6cbe2ed0d5f1b57ad107429dbfe5
1 /*
2 * Acer WMI Laptop Extras
3 *
4 * Copyright (C) 2007-2009 Carlos Corbacho <carlos@strangeworlds.co.uk>
5 *
6 * Based on acer_acpi:
7 * Copyright (C) 2005-2007 E.M. Smith
8 * Copyright (C) 2007-2008 Carlos Corbacho <cathectic@gmail.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/types.h>
31 #include <linux/dmi.h>
32 #include <linux/fb.h>
33 #include <linux/backlight.h>
34 #include <linux/leds.h>
35 #include <linux/platform_device.h>
36 #include <linux/acpi.h>
37 #include <linux/i8042.h>
38 #include <linux/rfkill.h>
39 #include <linux/workqueue.h>
40 #include <linux/debugfs.h>
41 #include <linux/slab.h>
42 #include <linux/input.h>
43 #include <linux/input/sparse-keymap.h>
44
45 #include <acpi/acpi_drivers.h>
46
47 MODULE_AUTHOR("Carlos Corbacho");
48 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
49 MODULE_LICENSE("GPL");
50
51 /*
52 * Magic Number
53 * Meaning is unknown - this number is required for writing to ACPI for AMW0
54 * (it's also used in acerhk when directly accessing the BIOS)
55 */
56 #define ACER_AMW0_WRITE 0x9610
57
58 /*
59 * Bit masks for the AMW0 interface
60 */
61 #define ACER_AMW0_WIRELESS_MASK 0x35
62 #define ACER_AMW0_BLUETOOTH_MASK 0x34
63 #define ACER_AMW0_MAILLED_MASK 0x31
64
65 /*
66 * Method IDs for WMID interface
67 */
68 #define ACER_WMID_GET_WIRELESS_METHODID 1
69 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
70 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
71 #define ACER_WMID_SET_WIRELESS_METHODID 4
72 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
73 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
74 #define ACER_WMID_GET_THREEG_METHODID 10
75 #define ACER_WMID_SET_THREEG_METHODID 11
76
77 /*
78 * Acer ACPI method GUIDs
79 */
80 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
81 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
82 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
83 #define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A"
84 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
85
86 /*
87 * Acer ACPI event GUIDs
88 */
89 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
90
91 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
92 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
93 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
94
95 enum acer_wmi_event_ids {
96 WMID_HOTKEY_EVENT = 0x1,
97 };
98
99 static const struct key_entry acer_wmi_keymap[] = {
100 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
101 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */
102 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
103 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
104 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
105 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
106 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
107 {KE_IGNORE, 0x41, {KEY_MUTE} },
108 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
109 {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
110 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
111 {KE_IGNORE, 0x45, {KEY_STOP} },
112 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
113 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
114 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
115 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
116 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
117 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
118 {KE_IGNORE, 0x81, {KEY_SLEEP} },
119 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
120 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
121 {KE_END, 0}
122 };
123
124 static struct input_dev *acer_wmi_input_dev;
125
126 struct event_return_value {
127 u8 function;
128 u8 key_num;
129 u16 device_state;
130 u32 reserved;
131 } __attribute__((packed));
132
133 /*
134 * GUID3 Get Device Status device flags
135 */
136 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
137 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
138 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
139
140 struct lm_input_params {
141 u8 function_num; /* Function Number */
142 u16 commun_devices; /* Communication type devices default status */
143 u16 devices; /* Other type devices default status */
144 u8 lm_status; /* Launch Manager Status */
145 u16 reserved;
146 } __attribute__((packed));
147
148 struct lm_return_value {
149 u8 error_code; /* Error Code */
150 u8 ec_return_value; /* EC Return Value */
151 u16 reserved;
152 } __attribute__((packed));
153
154 struct wmid3_gds_input_param { /* Get Device Status input parameter */
155 u8 function_num; /* Function Number */
156 u8 hotkey_number; /* Hotkey Number */
157 u16 devices; /* Get Device */
158 } __attribute__((packed));
159
160 struct wmid3_gds_return_value { /* Get Device Status return value*/
161 u8 error_code; /* Error Code */
162 u8 ec_return_value; /* EC Return Value */
163 u16 devices; /* Current Device Status */
164 u32 reserved;
165 } __attribute__((packed));
166
167 struct hotkey_function_type_aa {
168 u8 type;
169 u8 length;
170 u16 handle;
171 u16 commun_func_bitmap;
172 } __attribute__((packed));
173
174 /*
175 * Interface capability flags
176 */
177 #define ACER_CAP_MAILLED (1<<0)
178 #define ACER_CAP_WIRELESS (1<<1)
179 #define ACER_CAP_BLUETOOTH (1<<2)
180 #define ACER_CAP_BRIGHTNESS (1<<3)
181 #define ACER_CAP_THREEG (1<<4)
182 #define ACER_CAP_ANY (0xFFFFFFFF)
183
184 /*
185 * Interface type flags
186 */
187 enum interface_flags {
188 ACER_AMW0,
189 ACER_AMW0_V2,
190 ACER_WMID,
191 };
192
193 #define ACER_DEFAULT_WIRELESS 0
194 #define ACER_DEFAULT_BLUETOOTH 0
195 #define ACER_DEFAULT_MAILLED 0
196 #define ACER_DEFAULT_THREEG 0
197
198 static int max_brightness = 0xF;
199
200 static int mailled = -1;
201 static int brightness = -1;
202 static int threeg = -1;
203 static int force_series;
204 static bool ec_raw_mode;
205 static bool has_type_aa;
206
207 module_param(mailled, int, 0444);
208 module_param(brightness, int, 0444);
209 module_param(threeg, int, 0444);
210 module_param(force_series, int, 0444);
211 module_param(ec_raw_mode, bool, 0444);
212 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
213 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
214 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
215 MODULE_PARM_DESC(force_series, "Force a different laptop series");
216 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
217
218 struct acer_data {
219 int mailled;
220 int threeg;
221 int brightness;
222 };
223
224 struct acer_debug {
225 struct dentry *root;
226 struct dentry *devices;
227 u32 wmid_devices;
228 };
229
230 static struct rfkill *wireless_rfkill;
231 static struct rfkill *bluetooth_rfkill;
232 static struct rfkill *threeg_rfkill;
233 static bool rfkill_inited;
234
235 /* Each low-level interface must define at least some of the following */
236 struct wmi_interface {
237 /* The WMI device type */
238 u32 type;
239
240 /* The capabilities this interface provides */
241 u32 capability;
242
243 /* Private data for the current interface */
244 struct acer_data data;
245
246 /* debugfs entries associated with this interface */
247 struct acer_debug debug;
248 };
249
250 /* The static interface pointer, points to the currently detected interface */
251 static struct wmi_interface *interface;
252
253 /*
254 * Embedded Controller quirks
255 * Some laptops require us to directly access the EC to either enable or query
256 * features that are not available through WMI.
257 */
258
259 struct quirk_entry {
260 u8 wireless;
261 u8 mailled;
262 s8 brightness;
263 u8 bluetooth;
264 };
265
266 static struct quirk_entry *quirks;
267
268 static void set_quirks(void)
269 {
270 if (!interface)
271 return;
272
273 if (quirks->mailled)
274 interface->capability |= ACER_CAP_MAILLED;
275
276 if (quirks->brightness)
277 interface->capability |= ACER_CAP_BRIGHTNESS;
278 }
279
280 static int dmi_matched(const struct dmi_system_id *dmi)
281 {
282 quirks = dmi->driver_data;
283 return 1;
284 }
285
286 static struct quirk_entry quirk_unknown = {
287 };
288
289 static struct quirk_entry quirk_acer_aspire_1520 = {
290 .brightness = -1,
291 };
292
293 static struct quirk_entry quirk_acer_travelmate_2490 = {
294 .mailled = 1,
295 };
296
297 /* This AMW0 laptop has no bluetooth */
298 static struct quirk_entry quirk_medion_md_98300 = {
299 .wireless = 1,
300 };
301
302 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
303 .wireless = 2,
304 };
305
306 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
307 static struct dmi_system_id __devinitdata acer_blacklist[] = {
308 {
309 .ident = "Acer Aspire One (SSD)",
310 .matches = {
311 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
312 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
313 },
314 },
315 {
316 .ident = "Acer Aspire One (HDD)",
317 .matches = {
318 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
319 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
320 },
321 },
322 {}
323 };
324
325 static struct dmi_system_id acer_quirks[] = {
326 {
327 .callback = dmi_matched,
328 .ident = "Acer Aspire 1360",
329 .matches = {
330 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
331 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
332 },
333 .driver_data = &quirk_acer_aspire_1520,
334 },
335 {
336 .callback = dmi_matched,
337 .ident = "Acer Aspire 1520",
338 .matches = {
339 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
340 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
341 },
342 .driver_data = &quirk_acer_aspire_1520,
343 },
344 {
345 .callback = dmi_matched,
346 .ident = "Acer Aspire 3100",
347 .matches = {
348 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
349 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
350 },
351 .driver_data = &quirk_acer_travelmate_2490,
352 },
353 {
354 .callback = dmi_matched,
355 .ident = "Acer Aspire 3610",
356 .matches = {
357 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
358 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
359 },
360 .driver_data = &quirk_acer_travelmate_2490,
361 },
362 {
363 .callback = dmi_matched,
364 .ident = "Acer Aspire 5100",
365 .matches = {
366 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
367 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
368 },
369 .driver_data = &quirk_acer_travelmate_2490,
370 },
371 {
372 .callback = dmi_matched,
373 .ident = "Acer Aspire 5610",
374 .matches = {
375 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
376 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
377 },
378 .driver_data = &quirk_acer_travelmate_2490,
379 },
380 {
381 .callback = dmi_matched,
382 .ident = "Acer Aspire 5630",
383 .matches = {
384 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
385 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
386 },
387 .driver_data = &quirk_acer_travelmate_2490,
388 },
389 {
390 .callback = dmi_matched,
391 .ident = "Acer Aspire 5650",
392 .matches = {
393 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
394 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
395 },
396 .driver_data = &quirk_acer_travelmate_2490,
397 },
398 {
399 .callback = dmi_matched,
400 .ident = "Acer Aspire 5680",
401 .matches = {
402 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
403 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
404 },
405 .driver_data = &quirk_acer_travelmate_2490,
406 },
407 {
408 .callback = dmi_matched,
409 .ident = "Acer Aspire 9110",
410 .matches = {
411 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
412 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
413 },
414 .driver_data = &quirk_acer_travelmate_2490,
415 },
416 {
417 .callback = dmi_matched,
418 .ident = "Acer TravelMate 2490",
419 .matches = {
420 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
421 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
422 },
423 .driver_data = &quirk_acer_travelmate_2490,
424 },
425 {
426 .callback = dmi_matched,
427 .ident = "Acer TravelMate 4200",
428 .matches = {
429 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
430 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
431 },
432 .driver_data = &quirk_acer_travelmate_2490,
433 },
434 {
435 .callback = dmi_matched,
436 .ident = "Fujitsu Siemens Amilo Li 1718",
437 .matches = {
438 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
439 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
440 },
441 .driver_data = &quirk_fujitsu_amilo_li_1718,
442 },
443 {
444 .callback = dmi_matched,
445 .ident = "Medion MD 98300",
446 .matches = {
447 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
448 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
449 },
450 .driver_data = &quirk_medion_md_98300,
451 },
452 {}
453 };
454
455 /* Find which quirks are needed for a particular vendor/ model pair */
456 static void find_quirks(void)
457 {
458 if (!force_series) {
459 dmi_check_system(acer_quirks);
460 } else if (force_series == 2490) {
461 quirks = &quirk_acer_travelmate_2490;
462 }
463
464 if (quirks == NULL)
465 quirks = &quirk_unknown;
466
467 set_quirks();
468 }
469
470 /*
471 * General interface convenience methods
472 */
473
474 static bool has_cap(u32 cap)
475 {
476 if ((interface->capability & cap) != 0)
477 return 1;
478
479 return 0;
480 }
481
482 /*
483 * AMW0 (V1) interface
484 */
485 struct wmab_args {
486 u32 eax;
487 u32 ebx;
488 u32 ecx;
489 u32 edx;
490 };
491
492 struct wmab_ret {
493 u32 eax;
494 u32 ebx;
495 u32 ecx;
496 u32 edx;
497 u32 eex;
498 };
499
500 static acpi_status wmab_execute(struct wmab_args *regbuf,
501 struct acpi_buffer *result)
502 {
503 struct acpi_buffer input;
504 acpi_status status;
505 input.length = sizeof(struct wmab_args);
506 input.pointer = (u8 *)regbuf;
507
508 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
509
510 return status;
511 }
512
513 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
514 struct wmi_interface *iface)
515 {
516 int err;
517 u8 result;
518
519 switch (cap) {
520 case ACER_CAP_MAILLED:
521 switch (quirks->mailled) {
522 default:
523 err = ec_read(0xA, &result);
524 if (err)
525 return AE_ERROR;
526 *value = (result >> 7) & 0x1;
527 return AE_OK;
528 }
529 break;
530 case ACER_CAP_WIRELESS:
531 switch (quirks->wireless) {
532 case 1:
533 err = ec_read(0x7B, &result);
534 if (err)
535 return AE_ERROR;
536 *value = result & 0x1;
537 return AE_OK;
538 case 2:
539 err = ec_read(0x71, &result);
540 if (err)
541 return AE_ERROR;
542 *value = result & 0x1;
543 return AE_OK;
544 default:
545 err = ec_read(0xA, &result);
546 if (err)
547 return AE_ERROR;
548 *value = (result >> 2) & 0x1;
549 return AE_OK;
550 }
551 break;
552 case ACER_CAP_BLUETOOTH:
553 switch (quirks->bluetooth) {
554 default:
555 err = ec_read(0xA, &result);
556 if (err)
557 return AE_ERROR;
558 *value = (result >> 4) & 0x1;
559 return AE_OK;
560 }
561 break;
562 case ACER_CAP_BRIGHTNESS:
563 switch (quirks->brightness) {
564 default:
565 err = ec_read(0x83, &result);
566 if (err)
567 return AE_ERROR;
568 *value = result;
569 return AE_OK;
570 }
571 break;
572 default:
573 return AE_ERROR;
574 }
575 return AE_OK;
576 }
577
578 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
579 {
580 struct wmab_args args;
581
582 args.eax = ACER_AMW0_WRITE;
583 args.ebx = value ? (1<<8) : 0;
584 args.ecx = args.edx = 0;
585
586 switch (cap) {
587 case ACER_CAP_MAILLED:
588 if (value > 1)
589 return AE_BAD_PARAMETER;
590 args.ebx |= ACER_AMW0_MAILLED_MASK;
591 break;
592 case ACER_CAP_WIRELESS:
593 if (value > 1)
594 return AE_BAD_PARAMETER;
595 args.ebx |= ACER_AMW0_WIRELESS_MASK;
596 break;
597 case ACER_CAP_BLUETOOTH:
598 if (value > 1)
599 return AE_BAD_PARAMETER;
600 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
601 break;
602 case ACER_CAP_BRIGHTNESS:
603 if (value > max_brightness)
604 return AE_BAD_PARAMETER;
605 switch (quirks->brightness) {
606 default:
607 return ec_write(0x83, value);
608 break;
609 }
610 default:
611 return AE_ERROR;
612 }
613
614 /* Actually do the set */
615 return wmab_execute(&args, NULL);
616 }
617
618 static acpi_status AMW0_find_mailled(void)
619 {
620 struct wmab_args args;
621 struct wmab_ret ret;
622 acpi_status status = AE_OK;
623 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
624 union acpi_object *obj;
625
626 args.eax = 0x86;
627 args.ebx = args.ecx = args.edx = 0;
628
629 status = wmab_execute(&args, &out);
630 if (ACPI_FAILURE(status))
631 return status;
632
633 obj = (union acpi_object *) out.pointer;
634 if (obj && obj->type == ACPI_TYPE_BUFFER &&
635 obj->buffer.length == sizeof(struct wmab_ret)) {
636 ret = *((struct wmab_ret *) obj->buffer.pointer);
637 } else {
638 kfree(out.pointer);
639 return AE_ERROR;
640 }
641
642 if (ret.eex & 0x1)
643 interface->capability |= ACER_CAP_MAILLED;
644
645 kfree(out.pointer);
646
647 return AE_OK;
648 }
649
650 static acpi_status AMW0_set_capabilities(void)
651 {
652 struct wmab_args args;
653 struct wmab_ret ret;
654 acpi_status status;
655 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
656 union acpi_object *obj;
657
658 /*
659 * On laptops with this strange GUID (non Acer), normal probing doesn't
660 * work.
661 */
662 if (wmi_has_guid(AMW0_GUID2)) {
663 interface->capability |= ACER_CAP_WIRELESS;
664 return AE_OK;
665 }
666
667 args.eax = ACER_AMW0_WRITE;
668 args.ecx = args.edx = 0;
669
670 args.ebx = 0xa2 << 8;
671 args.ebx |= ACER_AMW0_WIRELESS_MASK;
672
673 status = wmab_execute(&args, &out);
674 if (ACPI_FAILURE(status))
675 return status;
676
677 obj = out.pointer;
678 if (obj && obj->type == ACPI_TYPE_BUFFER &&
679 obj->buffer.length == sizeof(struct wmab_ret)) {
680 ret = *((struct wmab_ret *) obj->buffer.pointer);
681 } else {
682 status = AE_ERROR;
683 goto out;
684 }
685
686 if (ret.eax & 0x1)
687 interface->capability |= ACER_CAP_WIRELESS;
688
689 args.ebx = 2 << 8;
690 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
691
692 /*
693 * It's ok to use existing buffer for next wmab_execute call.
694 * But we need to kfree(out.pointer) if next wmab_execute fail.
695 */
696 status = wmab_execute(&args, &out);
697 if (ACPI_FAILURE(status))
698 goto out;
699
700 obj = (union acpi_object *) out.pointer;
701 if (obj && obj->type == ACPI_TYPE_BUFFER
702 && obj->buffer.length == sizeof(struct wmab_ret)) {
703 ret = *((struct wmab_ret *) obj->buffer.pointer);
704 } else {
705 status = AE_ERROR;
706 goto out;
707 }
708
709 if (ret.eax & 0x1)
710 interface->capability |= ACER_CAP_BLUETOOTH;
711
712 /*
713 * This appears to be safe to enable, since all Wistron based laptops
714 * appear to use the same EC register for brightness, even if they
715 * differ for wireless, etc
716 */
717 if (quirks->brightness >= 0)
718 interface->capability |= ACER_CAP_BRIGHTNESS;
719
720 status = AE_OK;
721 out:
722 kfree(out.pointer);
723 return status;
724 }
725
726 static struct wmi_interface AMW0_interface = {
727 .type = ACER_AMW0,
728 };
729
730 static struct wmi_interface AMW0_V2_interface = {
731 .type = ACER_AMW0_V2,
732 };
733
734 /*
735 * New interface (The WMID interface)
736 */
737 static acpi_status
738 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
739 {
740 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
741 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
742 union acpi_object *obj;
743 u32 tmp;
744 acpi_status status;
745
746 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
747
748 if (ACPI_FAILURE(status))
749 return status;
750
751 obj = (union acpi_object *) result.pointer;
752 if (obj && obj->type == ACPI_TYPE_BUFFER &&
753 (obj->buffer.length == sizeof(u32) ||
754 obj->buffer.length == sizeof(u64))) {
755 tmp = *((u32 *) obj->buffer.pointer);
756 } else {
757 tmp = 0;
758 }
759
760 if (out)
761 *out = tmp;
762
763 kfree(result.pointer);
764
765 return status;
766 }
767
768 static acpi_status WMID_get_u32(u32 *value, u32 cap,
769 struct wmi_interface *iface)
770 {
771 acpi_status status;
772 u8 tmp;
773 u32 result, method_id = 0;
774
775 switch (cap) {
776 case ACER_CAP_WIRELESS:
777 method_id = ACER_WMID_GET_WIRELESS_METHODID;
778 break;
779 case ACER_CAP_BLUETOOTH:
780 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
781 break;
782 case ACER_CAP_BRIGHTNESS:
783 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
784 break;
785 case ACER_CAP_THREEG:
786 method_id = ACER_WMID_GET_THREEG_METHODID;
787 break;
788 case ACER_CAP_MAILLED:
789 if (quirks->mailled == 1) {
790 ec_read(0x9f, &tmp);
791 *value = tmp & 0x1;
792 return 0;
793 }
794 default:
795 return AE_ERROR;
796 }
797 status = WMI_execute_u32(method_id, 0, &result);
798
799 if (ACPI_SUCCESS(status))
800 *value = (u8)result;
801
802 return status;
803 }
804
805 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
806 {
807 u32 method_id = 0;
808 char param;
809
810 switch (cap) {
811 case ACER_CAP_BRIGHTNESS:
812 if (value > max_brightness)
813 return AE_BAD_PARAMETER;
814 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
815 break;
816 case ACER_CAP_WIRELESS:
817 if (value > 1)
818 return AE_BAD_PARAMETER;
819 method_id = ACER_WMID_SET_WIRELESS_METHODID;
820 break;
821 case ACER_CAP_BLUETOOTH:
822 if (value > 1)
823 return AE_BAD_PARAMETER;
824 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
825 break;
826 case ACER_CAP_THREEG:
827 if (value > 1)
828 return AE_BAD_PARAMETER;
829 method_id = ACER_WMID_SET_THREEG_METHODID;
830 break;
831 case ACER_CAP_MAILLED:
832 if (value > 1)
833 return AE_BAD_PARAMETER;
834 if (quirks->mailled == 1) {
835 param = value ? 0x92 : 0x93;
836 i8042_lock_chip();
837 i8042_command(&param, 0x1059);
838 i8042_unlock_chip();
839 return 0;
840 }
841 break;
842 default:
843 return AE_ERROR;
844 }
845 return WMI_execute_u32(method_id, (u32)value, NULL);
846 }
847
848 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
849 {
850 struct hotkey_function_type_aa *type_aa;
851
852 /* We are looking for OEM-specific Type AAh */
853 if (header->type != 0xAA)
854 return;
855
856 has_type_aa = true;
857 type_aa = (struct hotkey_function_type_aa *) header;
858
859 pr_info("Function bitmap for Communication Button: 0x%x\n",
860 type_aa->commun_func_bitmap);
861
862 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
863 interface->capability |= ACER_CAP_WIRELESS;
864 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
865 interface->capability |= ACER_CAP_THREEG;
866 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
867 interface->capability |= ACER_CAP_BLUETOOTH;
868 }
869
870 static acpi_status WMID_set_capabilities(void)
871 {
872 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
873 union acpi_object *obj;
874 acpi_status status;
875 u32 devices;
876
877 status = wmi_query_block(WMID_GUID2, 1, &out);
878 if (ACPI_FAILURE(status))
879 return status;
880
881 obj = (union acpi_object *) out.pointer;
882 if (obj && obj->type == ACPI_TYPE_BUFFER &&
883 (obj->buffer.length == sizeof(u32) ||
884 obj->buffer.length == sizeof(u64))) {
885 devices = *((u32 *) obj->buffer.pointer);
886 } else {
887 kfree(out.pointer);
888 return AE_ERROR;
889 }
890
891 dmi_walk(type_aa_dmi_decode, NULL);
892 if (!has_type_aa) {
893 interface->capability |= ACER_CAP_WIRELESS;
894 if (devices & 0x40)
895 interface->capability |= ACER_CAP_THREEG;
896 if (devices & 0x10)
897 interface->capability |= ACER_CAP_BLUETOOTH;
898 }
899
900 /* WMID always provides brightness methods */
901 interface->capability |= ACER_CAP_BRIGHTNESS;
902
903 if (!(devices & 0x20))
904 max_brightness = 0x9;
905
906 kfree(out.pointer);
907 return status;
908 }
909
910 static struct wmi_interface wmid_interface = {
911 .type = ACER_WMID,
912 };
913
914 /*
915 * Generic Device (interface-independent)
916 */
917
918 static acpi_status get_u32(u32 *value, u32 cap)
919 {
920 acpi_status status = AE_ERROR;
921
922 switch (interface->type) {
923 case ACER_AMW0:
924 status = AMW0_get_u32(value, cap, interface);
925 break;
926 case ACER_AMW0_V2:
927 if (cap == ACER_CAP_MAILLED) {
928 status = AMW0_get_u32(value, cap, interface);
929 break;
930 }
931 case ACER_WMID:
932 status = WMID_get_u32(value, cap, interface);
933 break;
934 }
935
936 return status;
937 }
938
939 static acpi_status set_u32(u32 value, u32 cap)
940 {
941 acpi_status status;
942
943 if (interface->capability & cap) {
944 switch (interface->type) {
945 case ACER_AMW0:
946 return AMW0_set_u32(value, cap, interface);
947 case ACER_AMW0_V2:
948 if (cap == ACER_CAP_MAILLED)
949 return AMW0_set_u32(value, cap, interface);
950
951 /*
952 * On some models, some WMID methods don't toggle
953 * properly. For those cases, we want to run the AMW0
954 * method afterwards to be certain we've really toggled
955 * the device state.
956 */
957 if (cap == ACER_CAP_WIRELESS ||
958 cap == ACER_CAP_BLUETOOTH) {
959 status = WMID_set_u32(value, cap, interface);
960 if (ACPI_FAILURE(status))
961 return status;
962
963 return AMW0_set_u32(value, cap, interface);
964 }
965 case ACER_WMID:
966 return WMID_set_u32(value, cap, interface);
967 default:
968 return AE_BAD_PARAMETER;
969 }
970 }
971 return AE_BAD_PARAMETER;
972 }
973
974 static void __init acer_commandline_init(void)
975 {
976 /*
977 * These will all fail silently if the value given is invalid, or the
978 * capability isn't available on the given interface
979 */
980 if (mailled >= 0)
981 set_u32(mailled, ACER_CAP_MAILLED);
982 if (!has_type_aa && threeg >= 0)
983 set_u32(threeg, ACER_CAP_THREEG);
984 if (brightness >= 0)
985 set_u32(brightness, ACER_CAP_BRIGHTNESS);
986 }
987
988 /*
989 * LED device (Mail LED only, no other LEDs known yet)
990 */
991 static void mail_led_set(struct led_classdev *led_cdev,
992 enum led_brightness value)
993 {
994 set_u32(value, ACER_CAP_MAILLED);
995 }
996
997 static struct led_classdev mail_led = {
998 .name = "acer-wmi::mail",
999 .brightness_set = mail_led_set,
1000 };
1001
1002 static int __devinit acer_led_init(struct device *dev)
1003 {
1004 return led_classdev_register(dev, &mail_led);
1005 }
1006
1007 static void acer_led_exit(void)
1008 {
1009 set_u32(LED_OFF, ACER_CAP_MAILLED);
1010 led_classdev_unregister(&mail_led);
1011 }
1012
1013 /*
1014 * Backlight device
1015 */
1016 static struct backlight_device *acer_backlight_device;
1017
1018 static int read_brightness(struct backlight_device *bd)
1019 {
1020 u32 value;
1021 get_u32(&value, ACER_CAP_BRIGHTNESS);
1022 return value;
1023 }
1024
1025 static int update_bl_status(struct backlight_device *bd)
1026 {
1027 int intensity = bd->props.brightness;
1028
1029 if (bd->props.power != FB_BLANK_UNBLANK)
1030 intensity = 0;
1031 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1032 intensity = 0;
1033
1034 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1035
1036 return 0;
1037 }
1038
1039 static const struct backlight_ops acer_bl_ops = {
1040 .get_brightness = read_brightness,
1041 .update_status = update_bl_status,
1042 };
1043
1044 static int __devinit acer_backlight_init(struct device *dev)
1045 {
1046 struct backlight_properties props;
1047 struct backlight_device *bd;
1048
1049 memset(&props, 0, sizeof(struct backlight_properties));
1050 props.type = BACKLIGHT_PLATFORM;
1051 props.max_brightness = max_brightness;
1052 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1053 &props);
1054 if (IS_ERR(bd)) {
1055 pr_err("Could not register Acer backlight device\n");
1056 acer_backlight_device = NULL;
1057 return PTR_ERR(bd);
1058 }
1059
1060 acer_backlight_device = bd;
1061
1062 bd->props.power = FB_BLANK_UNBLANK;
1063 bd->props.brightness = read_brightness(bd);
1064 backlight_update_status(bd);
1065 return 0;
1066 }
1067
1068 static void acer_backlight_exit(void)
1069 {
1070 backlight_device_unregister(acer_backlight_device);
1071 }
1072
1073 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1074 {
1075 struct wmid3_gds_return_value return_value;
1076 acpi_status status;
1077 union acpi_object *obj;
1078 struct wmid3_gds_input_param params = {
1079 .function_num = 0x1,
1080 .hotkey_number = 0x01,
1081 .devices = device,
1082 };
1083 struct acpi_buffer input = {
1084 sizeof(struct wmid3_gds_input_param),
1085 &params
1086 };
1087 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1088
1089 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1090 if (ACPI_FAILURE(status))
1091 return status;
1092
1093 obj = output.pointer;
1094
1095 if (!obj)
1096 return AE_ERROR;
1097 else if (obj->type != ACPI_TYPE_BUFFER) {
1098 kfree(obj);
1099 return AE_ERROR;
1100 }
1101 if (obj->buffer.length != 8) {
1102 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1103 kfree(obj);
1104 return AE_ERROR;
1105 }
1106
1107 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1108 kfree(obj);
1109
1110 if (return_value.error_code || return_value.ec_return_value)
1111 pr_warn("Get Device Status failed: 0x%x - 0x%x\n",
1112 return_value.error_code,
1113 return_value.ec_return_value);
1114 else
1115 *value = !!(return_value.devices & device);
1116
1117 return status;
1118 }
1119
1120 static acpi_status get_device_status(u32 *value, u32 cap)
1121 {
1122 if (wmi_has_guid(WMID_GUID3)) {
1123 u16 device;
1124
1125 switch (cap) {
1126 case ACER_CAP_WIRELESS:
1127 device = ACER_WMID3_GDS_WIRELESS;
1128 break;
1129 case ACER_CAP_BLUETOOTH:
1130 device = ACER_WMID3_GDS_BLUETOOTH;
1131 break;
1132 case ACER_CAP_THREEG:
1133 device = ACER_WMID3_GDS_THREEG;
1134 break;
1135 default:
1136 return AE_ERROR;
1137 }
1138 return wmid3_get_device_status(value, device);
1139
1140 } else {
1141 return get_u32(value, cap);
1142 }
1143 }
1144
1145 /*
1146 * Rfkill devices
1147 */
1148 static void acer_rfkill_update(struct work_struct *ignored);
1149 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1150 static void acer_rfkill_update(struct work_struct *ignored)
1151 {
1152 u32 state;
1153 acpi_status status;
1154
1155 status = get_u32(&state, ACER_CAP_WIRELESS);
1156 if (ACPI_SUCCESS(status))
1157 rfkill_set_sw_state(wireless_rfkill, !state);
1158
1159 if (has_cap(ACER_CAP_BLUETOOTH)) {
1160 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1161 if (ACPI_SUCCESS(status))
1162 rfkill_set_sw_state(bluetooth_rfkill, !state);
1163 }
1164
1165 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1166 status = wmid3_get_device_status(&state,
1167 ACER_WMID3_GDS_THREEG);
1168 if (ACPI_SUCCESS(status))
1169 rfkill_set_sw_state(threeg_rfkill, !state);
1170 }
1171
1172 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1173 }
1174
1175 static int acer_rfkill_set(void *data, bool blocked)
1176 {
1177 acpi_status status;
1178 u32 cap = (unsigned long)data;
1179
1180 if (rfkill_inited) {
1181 status = set_u32(!blocked, cap);
1182 if (ACPI_FAILURE(status))
1183 return -ENODEV;
1184 }
1185
1186 return 0;
1187 }
1188
1189 static const struct rfkill_ops acer_rfkill_ops = {
1190 .set_block = acer_rfkill_set,
1191 };
1192
1193 static struct rfkill *acer_rfkill_register(struct device *dev,
1194 enum rfkill_type type,
1195 char *name, u32 cap)
1196 {
1197 int err;
1198 struct rfkill *rfkill_dev;
1199 u32 state;
1200 acpi_status status;
1201
1202 rfkill_dev = rfkill_alloc(name, dev, type,
1203 &acer_rfkill_ops,
1204 (void *)(unsigned long)cap);
1205 if (!rfkill_dev)
1206 return ERR_PTR(-ENOMEM);
1207
1208 status = get_device_status(&state, cap);
1209
1210 err = rfkill_register(rfkill_dev);
1211 if (err) {
1212 rfkill_destroy(rfkill_dev);
1213 return ERR_PTR(err);
1214 }
1215
1216 if (ACPI_SUCCESS(status))
1217 rfkill_set_sw_state(rfkill_dev, !state);
1218
1219 return rfkill_dev;
1220 }
1221
1222 static int acer_rfkill_init(struct device *dev)
1223 {
1224 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1225 "acer-wireless", ACER_CAP_WIRELESS);
1226 if (IS_ERR(wireless_rfkill))
1227 return PTR_ERR(wireless_rfkill);
1228
1229 if (has_cap(ACER_CAP_BLUETOOTH)) {
1230 bluetooth_rfkill = acer_rfkill_register(dev,
1231 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1232 ACER_CAP_BLUETOOTH);
1233 if (IS_ERR(bluetooth_rfkill)) {
1234 rfkill_unregister(wireless_rfkill);
1235 rfkill_destroy(wireless_rfkill);
1236 return PTR_ERR(bluetooth_rfkill);
1237 }
1238 }
1239
1240 if (has_cap(ACER_CAP_THREEG)) {
1241 threeg_rfkill = acer_rfkill_register(dev,
1242 RFKILL_TYPE_WWAN, "acer-threeg",
1243 ACER_CAP_THREEG);
1244 if (IS_ERR(threeg_rfkill)) {
1245 rfkill_unregister(wireless_rfkill);
1246 rfkill_destroy(wireless_rfkill);
1247 rfkill_unregister(bluetooth_rfkill);
1248 rfkill_destroy(bluetooth_rfkill);
1249 return PTR_ERR(threeg_rfkill);
1250 }
1251 }
1252
1253 rfkill_inited = true;
1254
1255 if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1256 schedule_delayed_work(&acer_rfkill_work,
1257 round_jiffies_relative(HZ));
1258
1259 return 0;
1260 }
1261
1262 static void acer_rfkill_exit(void)
1263 {
1264 if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1265 cancel_delayed_work_sync(&acer_rfkill_work);
1266
1267 rfkill_unregister(wireless_rfkill);
1268 rfkill_destroy(wireless_rfkill);
1269
1270 if (has_cap(ACER_CAP_BLUETOOTH)) {
1271 rfkill_unregister(bluetooth_rfkill);
1272 rfkill_destroy(bluetooth_rfkill);
1273 }
1274
1275 if (has_cap(ACER_CAP_THREEG)) {
1276 rfkill_unregister(threeg_rfkill);
1277 rfkill_destroy(threeg_rfkill);
1278 }
1279 return;
1280 }
1281
1282 /*
1283 * sysfs interface
1284 */
1285 static ssize_t show_bool_threeg(struct device *dev,
1286 struct device_attribute *attr, char *buf)
1287 {
1288 u32 result; \
1289 acpi_status status;
1290 if (wmi_has_guid(WMID_GUID3))
1291 status = wmid3_get_device_status(&result,
1292 ACER_WMID3_GDS_THREEG);
1293 else
1294 status = get_u32(&result, ACER_CAP_THREEG);
1295 if (ACPI_SUCCESS(status))
1296 return sprintf(buf, "%u\n", result);
1297 return sprintf(buf, "Read error\n");
1298 }
1299
1300 static ssize_t set_bool_threeg(struct device *dev,
1301 struct device_attribute *attr, const char *buf, size_t count)
1302 {
1303 u32 tmp = simple_strtoul(buf, NULL, 10);
1304 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1305 if (ACPI_FAILURE(status))
1306 return -EINVAL;
1307 return count;
1308 }
1309 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1310 set_bool_threeg);
1311
1312 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1313 char *buf)
1314 {
1315 switch (interface->type) {
1316 case ACER_AMW0:
1317 return sprintf(buf, "AMW0\n");
1318 case ACER_AMW0_V2:
1319 return sprintf(buf, "AMW0 v2\n");
1320 case ACER_WMID:
1321 return sprintf(buf, "WMID\n");
1322 default:
1323 return sprintf(buf, "Error!\n");
1324 }
1325 }
1326
1327 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1328
1329 static void acer_wmi_notify(u32 value, void *context)
1330 {
1331 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1332 union acpi_object *obj;
1333 struct event_return_value return_value;
1334 acpi_status status;
1335
1336 status = wmi_get_event_data(value, &response);
1337 if (status != AE_OK) {
1338 pr_warn("bad event status 0x%x\n", status);
1339 return;
1340 }
1341
1342 obj = (union acpi_object *)response.pointer;
1343
1344 if (!obj)
1345 return;
1346 if (obj->type != ACPI_TYPE_BUFFER) {
1347 pr_warn("Unknown response received %d\n", obj->type);
1348 kfree(obj);
1349 return;
1350 }
1351 if (obj->buffer.length != 8) {
1352 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1353 kfree(obj);
1354 return;
1355 }
1356
1357 return_value = *((struct event_return_value *)obj->buffer.pointer);
1358 kfree(obj);
1359
1360 switch (return_value.function) {
1361 case WMID_HOTKEY_EVENT:
1362 if (return_value.device_state) {
1363 u16 device_state = return_value.device_state;
1364 pr_debug("device state: 0x%x\n", device_state);
1365 if (has_cap(ACER_CAP_WIRELESS))
1366 rfkill_set_sw_state(wireless_rfkill,
1367 !(device_state & ACER_WMID3_GDS_WIRELESS));
1368 if (has_cap(ACER_CAP_BLUETOOTH))
1369 rfkill_set_sw_state(bluetooth_rfkill,
1370 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1371 if (has_cap(ACER_CAP_THREEG))
1372 rfkill_set_sw_state(threeg_rfkill,
1373 !(device_state & ACER_WMID3_GDS_THREEG));
1374 }
1375 if (!sparse_keymap_report_event(acer_wmi_input_dev,
1376 return_value.key_num, 1, true))
1377 pr_warn("Unknown key number - 0x%x\n",
1378 return_value.key_num);
1379 break;
1380 default:
1381 pr_warn("Unknown function number - %d - %d\n",
1382 return_value.function, return_value.key_num);
1383 break;
1384 }
1385 }
1386
1387 static acpi_status
1388 wmid3_set_lm_mode(struct lm_input_params *params,
1389 struct lm_return_value *return_value)
1390 {
1391 acpi_status status;
1392 union acpi_object *obj;
1393
1394 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1395 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1396
1397 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1398 if (ACPI_FAILURE(status))
1399 return status;
1400
1401 obj = output.pointer;
1402
1403 if (!obj)
1404 return AE_ERROR;
1405 else if (obj->type != ACPI_TYPE_BUFFER) {
1406 kfree(obj);
1407 return AE_ERROR;
1408 }
1409 if (obj->buffer.length != 4) {
1410 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1411 kfree(obj);
1412 return AE_ERROR;
1413 }
1414
1415 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1416 kfree(obj);
1417
1418 return status;
1419 }
1420
1421 static int acer_wmi_enable_ec_raw(void)
1422 {
1423 struct lm_return_value return_value;
1424 acpi_status status;
1425 struct lm_input_params params = {
1426 .function_num = 0x1,
1427 .commun_devices = 0xFFFF,
1428 .devices = 0xFFFF,
1429 .lm_status = 0x00, /* Launch Manager Deactive */
1430 };
1431
1432 status = wmid3_set_lm_mode(&params, &return_value);
1433
1434 if (return_value.error_code || return_value.ec_return_value)
1435 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1436 return_value.error_code,
1437 return_value.ec_return_value);
1438 else
1439 pr_info("Enabled EC raw mode\n");
1440
1441 return status;
1442 }
1443
1444 static int acer_wmi_enable_lm(void)
1445 {
1446 struct lm_return_value return_value;
1447 acpi_status status;
1448 struct lm_input_params params = {
1449 .function_num = 0x1,
1450 .commun_devices = 0xFFFF,
1451 .devices = 0xFFFF,
1452 .lm_status = 0x01, /* Launch Manager Active */
1453 };
1454
1455 status = wmid3_set_lm_mode(&params, &return_value);
1456
1457 if (return_value.error_code || return_value.ec_return_value)
1458 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1459 return_value.error_code,
1460 return_value.ec_return_value);
1461
1462 return status;
1463 }
1464
1465 static int __init acer_wmi_input_setup(void)
1466 {
1467 acpi_status status;
1468 int err;
1469
1470 acer_wmi_input_dev = input_allocate_device();
1471 if (!acer_wmi_input_dev)
1472 return -ENOMEM;
1473
1474 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1475 acer_wmi_input_dev->phys = "wmi/input0";
1476 acer_wmi_input_dev->id.bustype = BUS_HOST;
1477
1478 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1479 if (err)
1480 goto err_free_dev;
1481
1482 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1483 acer_wmi_notify, NULL);
1484 if (ACPI_FAILURE(status)) {
1485 err = -EIO;
1486 goto err_free_keymap;
1487 }
1488
1489 err = input_register_device(acer_wmi_input_dev);
1490 if (err)
1491 goto err_uninstall_notifier;
1492
1493 return 0;
1494
1495 err_uninstall_notifier:
1496 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1497 err_free_keymap:
1498 sparse_keymap_free(acer_wmi_input_dev);
1499 err_free_dev:
1500 input_free_device(acer_wmi_input_dev);
1501 return err;
1502 }
1503
1504 static void acer_wmi_input_destroy(void)
1505 {
1506 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1507 sparse_keymap_free(acer_wmi_input_dev);
1508 input_unregister_device(acer_wmi_input_dev);
1509 }
1510
1511 /*
1512 * debugfs functions
1513 */
1514 static u32 get_wmid_devices(void)
1515 {
1516 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1517 union acpi_object *obj;
1518 acpi_status status;
1519 u32 devices = 0;
1520
1521 status = wmi_query_block(WMID_GUID2, 1, &out);
1522 if (ACPI_FAILURE(status))
1523 return 0;
1524
1525 obj = (union acpi_object *) out.pointer;
1526 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1527 (obj->buffer.length == sizeof(u32) ||
1528 obj->buffer.length == sizeof(u64))) {
1529 devices = *((u32 *) obj->buffer.pointer);
1530 }
1531
1532 kfree(out.pointer);
1533 return devices;
1534 }
1535
1536 /*
1537 * Platform device
1538 */
1539 static int __devinit acer_platform_probe(struct platform_device *device)
1540 {
1541 int err;
1542
1543 if (has_cap(ACER_CAP_MAILLED)) {
1544 err = acer_led_init(&device->dev);
1545 if (err)
1546 goto error_mailled;
1547 }
1548
1549 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1550 err = acer_backlight_init(&device->dev);
1551 if (err)
1552 goto error_brightness;
1553 }
1554
1555 err = acer_rfkill_init(&device->dev);
1556 if (err)
1557 goto error_rfkill;
1558
1559 return err;
1560
1561 error_rfkill:
1562 if (has_cap(ACER_CAP_BRIGHTNESS))
1563 acer_backlight_exit();
1564 error_brightness:
1565 if (has_cap(ACER_CAP_MAILLED))
1566 acer_led_exit();
1567 error_mailled:
1568 return err;
1569 }
1570
1571 static int acer_platform_remove(struct platform_device *device)
1572 {
1573 if (has_cap(ACER_CAP_MAILLED))
1574 acer_led_exit();
1575 if (has_cap(ACER_CAP_BRIGHTNESS))
1576 acer_backlight_exit();
1577
1578 acer_rfkill_exit();
1579 return 0;
1580 }
1581
1582 static int acer_platform_suspend(struct platform_device *dev,
1583 pm_message_t state)
1584 {
1585 u32 value;
1586 struct acer_data *data = &interface->data;
1587
1588 if (!data)
1589 return -ENOMEM;
1590
1591 if (has_cap(ACER_CAP_MAILLED)) {
1592 get_u32(&value, ACER_CAP_MAILLED);
1593 set_u32(LED_OFF, ACER_CAP_MAILLED);
1594 data->mailled = value;
1595 }
1596
1597 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1598 get_u32(&value, ACER_CAP_BRIGHTNESS);
1599 data->brightness = value;
1600 }
1601
1602 return 0;
1603 }
1604
1605 static int acer_platform_resume(struct platform_device *device)
1606 {
1607 struct acer_data *data = &interface->data;
1608
1609 if (!data)
1610 return -ENOMEM;
1611
1612 if (has_cap(ACER_CAP_MAILLED))
1613 set_u32(data->mailled, ACER_CAP_MAILLED);
1614
1615 if (has_cap(ACER_CAP_BRIGHTNESS))
1616 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1617
1618 return 0;
1619 }
1620
1621 static void acer_platform_shutdown(struct platform_device *device)
1622 {
1623 struct acer_data *data = &interface->data;
1624
1625 if (!data)
1626 return;
1627
1628 if (has_cap(ACER_CAP_MAILLED))
1629 set_u32(LED_OFF, ACER_CAP_MAILLED);
1630 }
1631
1632 static struct platform_driver acer_platform_driver = {
1633 .driver = {
1634 .name = "acer-wmi",
1635 .owner = THIS_MODULE,
1636 },
1637 .probe = acer_platform_probe,
1638 .remove = acer_platform_remove,
1639 .suspend = acer_platform_suspend,
1640 .resume = acer_platform_resume,
1641 .shutdown = acer_platform_shutdown,
1642 };
1643
1644 static struct platform_device *acer_platform_device;
1645
1646 static int remove_sysfs(struct platform_device *device)
1647 {
1648 if (has_cap(ACER_CAP_THREEG))
1649 device_remove_file(&device->dev, &dev_attr_threeg);
1650
1651 device_remove_file(&device->dev, &dev_attr_interface);
1652
1653 return 0;
1654 }
1655
1656 static int create_sysfs(void)
1657 {
1658 int retval = -ENOMEM;
1659
1660 if (has_cap(ACER_CAP_THREEG)) {
1661 retval = device_create_file(&acer_platform_device->dev,
1662 &dev_attr_threeg);
1663 if (retval)
1664 goto error_sysfs;
1665 }
1666
1667 retval = device_create_file(&acer_platform_device->dev,
1668 &dev_attr_interface);
1669 if (retval)
1670 goto error_sysfs;
1671
1672 return 0;
1673
1674 error_sysfs:
1675 remove_sysfs(acer_platform_device);
1676 return retval;
1677 }
1678
1679 static void remove_debugfs(void)
1680 {
1681 debugfs_remove(interface->debug.devices);
1682 debugfs_remove(interface->debug.root);
1683 }
1684
1685 static int create_debugfs(void)
1686 {
1687 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1688 if (!interface->debug.root) {
1689 pr_err("Failed to create debugfs directory");
1690 return -ENOMEM;
1691 }
1692
1693 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1694 interface->debug.root,
1695 &interface->debug.wmid_devices);
1696 if (!interface->debug.devices)
1697 goto error_debugfs;
1698
1699 return 0;
1700
1701 error_debugfs:
1702 remove_debugfs();
1703 return -ENOMEM;
1704 }
1705
1706 static int __init acer_wmi_init(void)
1707 {
1708 int err;
1709
1710 pr_info("Acer Laptop ACPI-WMI Extras\n");
1711
1712 if (dmi_check_system(acer_blacklist)) {
1713 pr_info("Blacklisted hardware detected - not loading\n");
1714 return -ENODEV;
1715 }
1716
1717 find_quirks();
1718
1719 /*
1720 * Detect which ACPI-WMI interface we're using.
1721 */
1722 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1723 interface = &AMW0_V2_interface;
1724
1725 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1726 interface = &wmid_interface;
1727
1728 if (wmi_has_guid(WMID_GUID2) && interface) {
1729 if (ACPI_FAILURE(WMID_set_capabilities())) {
1730 pr_err("Unable to detect available WMID devices\n");
1731 return -ENODEV;
1732 }
1733 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1734 pr_err("No WMID device detection method found\n");
1735 return -ENODEV;
1736 }
1737
1738 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1739 interface = &AMW0_interface;
1740
1741 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1742 pr_err("Unable to detect available AMW0 devices\n");
1743 return -ENODEV;
1744 }
1745 }
1746
1747 if (wmi_has_guid(AMW0_GUID1))
1748 AMW0_find_mailled();
1749
1750 if (!interface) {
1751 pr_err("No or unsupported WMI interface, unable to load\n");
1752 return -ENODEV;
1753 }
1754
1755 set_quirks();
1756
1757 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1758 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1759 pr_info("Brightness must be controlled by "
1760 "generic video driver\n");
1761 }
1762
1763 if (wmi_has_guid(WMID_GUID3)) {
1764 if (ec_raw_mode) {
1765 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1766 pr_err("Cannot enable EC raw mode\n");
1767 return -ENODEV;
1768 }
1769 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1770 pr_err("Cannot enable Launch Manager mode\n");
1771 return -ENODEV;
1772 }
1773 } else if (ec_raw_mode) {
1774 pr_info("No WMID EC raw mode enable method\n");
1775 }
1776
1777 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1778 err = acer_wmi_input_setup();
1779 if (err)
1780 return err;
1781 }
1782
1783 err = platform_driver_register(&acer_platform_driver);
1784 if (err) {
1785 pr_err("Unable to register platform driver.\n");
1786 goto error_platform_register;
1787 }
1788
1789 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1790 if (!acer_platform_device) {
1791 err = -ENOMEM;
1792 goto error_device_alloc;
1793 }
1794
1795 err = platform_device_add(acer_platform_device);
1796 if (err)
1797 goto error_device_add;
1798
1799 err = create_sysfs();
1800 if (err)
1801 goto error_create_sys;
1802
1803 if (wmi_has_guid(WMID_GUID2)) {
1804 interface->debug.wmid_devices = get_wmid_devices();
1805 err = create_debugfs();
1806 if (err)
1807 goto error_create_debugfs;
1808 }
1809
1810 /* Override any initial settings with values from the commandline */
1811 acer_commandline_init();
1812
1813 return 0;
1814
1815 error_create_debugfs:
1816 remove_sysfs(acer_platform_device);
1817 error_create_sys:
1818 platform_device_del(acer_platform_device);
1819 error_device_add:
1820 platform_device_put(acer_platform_device);
1821 error_device_alloc:
1822 platform_driver_unregister(&acer_platform_driver);
1823 error_platform_register:
1824 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1825 acer_wmi_input_destroy();
1826
1827 return err;
1828 }
1829
1830 static void __exit acer_wmi_exit(void)
1831 {
1832 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1833 acer_wmi_input_destroy();
1834
1835 remove_sysfs(acer_platform_device);
1836 remove_debugfs();
1837 platform_device_unregister(acer_platform_device);
1838 platform_driver_unregister(&acer_platform_driver);
1839
1840 pr_info("Acer Laptop WMI Extras unloaded\n");
1841 return;
1842 }
1843
1844 module_init(acer_wmi_init);
1845 module_exit(acer_wmi_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree