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acer-wmi: Add support for Aspire 1830 wlan hotkey
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / platform / x86 / acer-wmi.c
blobfa7153020ca11a5b2206dbb8548dbbc4cd2ae39a
1 /*
2 * Acer WMI Laptop Extras
3 *
4 * Copyright (C) 2007-2009 Carlos Corbacho <carlos@strangeworlds.co.uk>
5 *
6 * Based on acer_acpi:
7 * Copyright (C) 2005-2007 E.M. Smith
8 * Copyright (C) 2007-2008 Carlos Corbacho <cathectic@gmail.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/types.h>
31 #include <linux/dmi.h>
32 #include <linux/fb.h>
33 #include <linux/backlight.h>
34 #include <linux/leds.h>
35 #include <linux/platform_device.h>
36 #include <linux/acpi.h>
37 #include <linux/i8042.h>
38 #include <linux/rfkill.h>
39 #include <linux/workqueue.h>
40 #include <linux/debugfs.h>
41 #include <linux/slab.h>
42 #include <linux/input.h>
43 #include <linux/input/sparse-keymap.h>
44
45 #include <acpi/acpi_drivers.h>
46
47 MODULE_AUTHOR("Carlos Corbacho");
48 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
49 MODULE_LICENSE("GPL");
50
51 /*
52 * Magic Number
53 * Meaning is unknown - this number is required for writing to ACPI for AMW0
54 * (it's also used in acerhk when directly accessing the BIOS)
55 */
56 #define ACER_AMW0_WRITE 0x9610
57
58 /*
59 * Bit masks for the AMW0 interface
60 */
61 #define ACER_AMW0_WIRELESS_MASK 0x35
62 #define ACER_AMW0_BLUETOOTH_MASK 0x34
63 #define ACER_AMW0_MAILLED_MASK 0x31
64
65 /*
66 * Method IDs for WMID interface
67 */
68 #define ACER_WMID_GET_WIRELESS_METHODID 1
69 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
70 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
71 #define ACER_WMID_SET_WIRELESS_METHODID 4
72 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
73 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
74 #define ACER_WMID_GET_THREEG_METHODID 10
75 #define ACER_WMID_SET_THREEG_METHODID 11
76
77 /*
78 * Acer ACPI method GUIDs
79 */
80 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
81 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
82 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
83 #define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A"
84 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
85
86 /*
87 * Acer ACPI event GUIDs
88 */
89 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
90
91 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
92 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
93 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
94
95 enum acer_wmi_event_ids {
96 WMID_HOTKEY_EVENT = 0x1,
97 };
98
99 static const struct key_entry acer_wmi_keymap[] = {
100 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
101 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */
102 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */
103 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
104 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
105 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
106 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
107 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
108 {KE_IGNORE, 0x41, {KEY_MUTE} },
109 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
110 {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
111 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
112 {KE_IGNORE, 0x45, {KEY_STOP} },
113 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
114 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
115 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
116 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
117 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
118 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
119 {KE_IGNORE, 0x81, {KEY_SLEEP} },
120 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
121 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
122 {KE_END, 0}
123 };
124
125 static struct input_dev *acer_wmi_input_dev;
126
127 struct event_return_value {
128 u8 function;
129 u8 key_num;
130 u16 device_state;
131 u32 reserved;
132 } __attribute__((packed));
133
134 /*
135 * GUID3 Get Device Status device flags
136 */
137 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
138 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
139 #define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
140 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
141
142 struct lm_input_params {
143 u8 function_num; /* Function Number */
144 u16 commun_devices; /* Communication type devices default status */
145 u16 devices; /* Other type devices default status */
146 u8 lm_status; /* Launch Manager Status */
147 u16 reserved;
148 } __attribute__((packed));
149
150 struct lm_return_value {
151 u8 error_code; /* Error Code */
152 u8 ec_return_value; /* EC Return Value */
153 u16 reserved;
154 } __attribute__((packed));
155
156 struct wmid3_gds_input_param { /* Get Device Status input parameter */
157 u8 function_num; /* Function Number */
158 u8 hotkey_number; /* Hotkey Number */
159 u16 devices; /* Get Device */
160 } __attribute__((packed));
161
162 struct wmid3_gds_return_value { /* Get Device Status return value*/
163 u8 error_code; /* Error Code */
164 u8 ec_return_value; /* EC Return Value */
165 u16 devices; /* Current Device Status */
166 u32 reserved;
167 } __attribute__((packed));
168
169 struct hotkey_function_type_aa {
170 u8 type;
171 u8 length;
172 u16 handle;
173 u16 commun_func_bitmap;
174 } __attribute__((packed));
175
176 /*
177 * Interface capability flags
178 */
179 #define ACER_CAP_MAILLED (1<<0)
180 #define ACER_CAP_WIRELESS (1<<1)
181 #define ACER_CAP_BLUETOOTH (1<<2)
182 #define ACER_CAP_BRIGHTNESS (1<<3)
183 #define ACER_CAP_THREEG (1<<4)
184 #define ACER_CAP_ANY (0xFFFFFFFF)
185
186 /*
187 * Interface type flags
188 */
189 enum interface_flags {
190 ACER_AMW0,
191 ACER_AMW0_V2,
192 ACER_WMID,
193 };
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
200 static int max_brightness = 0xF;
201
202 static int mailled = -1;
203 static int brightness = -1;
204 static int threeg = -1;
205 static int force_series;
206 static bool ec_raw_mode;
207 static bool has_type_aa;
208
209 module_param(mailled, int, 0444);
210 module_param(brightness, int, 0444);
211 module_param(threeg, int, 0444);
212 module_param(force_series, int, 0444);
213 module_param(ec_raw_mode, bool, 0444);
214 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
215 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
216 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
217 MODULE_PARM_DESC(force_series, "Force a different laptop series");
218 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
219
220 struct acer_data {
221 int mailled;
222 int threeg;
223 int brightness;
224 };
225
226 struct acer_debug {
227 struct dentry *root;
228 struct dentry *devices;
229 u32 wmid_devices;
230 };
231
232 static struct rfkill *wireless_rfkill;
233 static struct rfkill *bluetooth_rfkill;
234 static struct rfkill *threeg_rfkill;
235 static bool rfkill_inited;
236
237 /* Each low-level interface must define at least some of the following */
238 struct 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 */
253 static 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
261 struct quirk_entry {
262 u8 wireless;
263 u8 mailled;
264 s8 brightness;
265 u8 bluetooth;
266 };
267
268 static struct quirk_entry *quirks;
269
270 static 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
282 static int dmi_matched(const struct dmi_system_id *dmi)
283 {
284 quirks = dmi->driver_data;
285 return 1;
286 }
287
288 static struct quirk_entry quirk_unknown = {
289 };
290
291 static struct quirk_entry quirk_acer_aspire_1520 = {
292 .brightness = -1,
293 };
294
295 static struct quirk_entry quirk_acer_travelmate_2490 = {
296 .mailled = 1,
297 };
298
299 /* This AMW0 laptop has no bluetooth */
300 static struct quirk_entry quirk_medion_md_98300 = {
301 .wireless = 1,
302 };
303
304 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
305 .wireless = 2,
306 };
307
308 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
309 static struct dmi_system_id __devinitdata acer_blacklist[] = {
310 {
311 .ident = "Acer Aspire One (SSD)",
312 .matches = {
313 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
314 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
315 },
316 },
317 {
318 .ident = "Acer Aspire One (HDD)",
319 .matches = {
320 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
321 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
322 },
323 },
324 {}
325 };
326
327 static struct dmi_system_id acer_quirks[] = {
328 {
329 .callback = dmi_matched,
330 .ident = "Acer Aspire 1360",
331 .matches = {
332 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
333 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
334 },
335 .driver_data = &quirk_acer_aspire_1520,
336 },
337 {
338 .callback = dmi_matched,
339 .ident = "Acer Aspire 1520",
340 .matches = {
341 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
342 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
343 },
344 .driver_data = &quirk_acer_aspire_1520,
345 },
346 {
347 .callback = dmi_matched,
348 .ident = "Acer Aspire 3100",
349 .matches = {
350 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
351 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
352 },
353 .driver_data = &quirk_acer_travelmate_2490,
354 },
355 {
356 .callback = dmi_matched,
357 .ident = "Acer Aspire 3610",
358 .matches = {
359 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
360 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
361 },
362 .driver_data = &quirk_acer_travelmate_2490,
363 },
364 {
365 .callback = dmi_matched,
366 .ident = "Acer Aspire 5100",
367 .matches = {
368 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
369 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
370 },
371 .driver_data = &quirk_acer_travelmate_2490,
372 },
373 {
374 .callback = dmi_matched,
375 .ident = "Acer Aspire 5610",
376 .matches = {
377 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
378 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
379 },
380 .driver_data = &quirk_acer_travelmate_2490,
381 },
382 {
383 .callback = dmi_matched,
384 .ident = "Acer Aspire 5630",
385 .matches = {
386 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
387 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
388 },
389 .driver_data = &quirk_acer_travelmate_2490,
390 },
391 {
392 .callback = dmi_matched,
393 .ident = "Acer Aspire 5650",
394 .matches = {
395 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
396 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
397 },
398 .driver_data = &quirk_acer_travelmate_2490,
399 },
400 {
401 .callback = dmi_matched,
402 .ident = "Acer Aspire 5680",
403 .matches = {
404 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
405 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
406 },
407 .driver_data = &quirk_acer_travelmate_2490,
408 },
409 {
410 .callback = dmi_matched,
411 .ident = "Acer Aspire 9110",
412 .matches = {
413 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
414 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
415 },
416 .driver_data = &quirk_acer_travelmate_2490,
417 },
418 {
419 .callback = dmi_matched,
420 .ident = "Acer TravelMate 2490",
421 .matches = {
422 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
423 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
424 },
425 .driver_data = &quirk_acer_travelmate_2490,
426 },
427 {
428 .callback = dmi_matched,
429 .ident = "Acer TravelMate 4200",
430 .matches = {
431 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
432 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
433 },
434 .driver_data = &quirk_acer_travelmate_2490,
435 },
436 {
437 .callback = dmi_matched,
438 .ident = "Fujitsu Siemens Amilo Li 1718",
439 .matches = {
440 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
441 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
442 },
443 .driver_data = &quirk_fujitsu_amilo_li_1718,
444 },
445 {
446 .callback = dmi_matched,
447 .ident = "Medion MD 98300",
448 .matches = {
449 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
450 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
451 },
452 .driver_data = &quirk_medion_md_98300,
453 },
454 {}
455 };
456
457 /* Find which quirks are needed for a particular vendor/ model pair */
458 static void find_quirks(void)
459 {
460 if (!force_series) {
461 dmi_check_system(acer_quirks);
462 } else if (force_series == 2490) {
463 quirks = &quirk_acer_travelmate_2490;
464 }
465
466 if (quirks == NULL)
467 quirks = &quirk_unknown;
468
469 set_quirks();
470 }
471
472 /*
473 * General interface convenience methods
474 */
475
476 static bool has_cap(u32 cap)
477 {
478 if ((interface->capability & cap) != 0)
479 return 1;
480
481 return 0;
482 }
483
484 /*
485 * AMW0 (V1) interface
486 */
487 struct wmab_args {
488 u32 eax;
489 u32 ebx;
490 u32 ecx;
491 u32 edx;
492 };
493
494 struct wmab_ret {
495 u32 eax;
496 u32 ebx;
497 u32 ecx;
498 u32 edx;
499 u32 eex;
500 };
501
502 static acpi_status wmab_execute(struct wmab_args *regbuf,
503 struct acpi_buffer *result)
504 {
505 struct acpi_buffer input;
506 acpi_status status;
507 input.length = sizeof(struct wmab_args);
508 input.pointer = (u8 *)regbuf;
509
510 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
511
512 return status;
513 }
514
515 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
516 struct wmi_interface *iface)
517 {
518 int err;
519 u8 result;
520
521 switch (cap) {
522 case ACER_CAP_MAILLED:
523 switch (quirks->mailled) {
524 default:
525 err = ec_read(0xA, &result);
526 if (err)
527 return AE_ERROR;
528 *value = (result >> 7) & 0x1;
529 return AE_OK;
530 }
531 break;
532 case ACER_CAP_WIRELESS:
533 switch (quirks->wireless) {
534 case 1:
535 err = ec_read(0x7B, &result);
536 if (err)
537 return AE_ERROR;
538 *value = result & 0x1;
539 return AE_OK;
540 case 2:
541 err = ec_read(0x71, &result);
542 if (err)
543 return AE_ERROR;
544 *value = result & 0x1;
545 return AE_OK;
546 default:
547 err = ec_read(0xA, &result);
548 if (err)
549 return AE_ERROR;
550 *value = (result >> 2) & 0x1;
551 return AE_OK;
552 }
553 break;
554 case ACER_CAP_BLUETOOTH:
555 switch (quirks->bluetooth) {
556 default:
557 err = ec_read(0xA, &result);
558 if (err)
559 return AE_ERROR;
560 *value = (result >> 4) & 0x1;
561 return AE_OK;
562 }
563 break;
564 case ACER_CAP_BRIGHTNESS:
565 switch (quirks->brightness) {
566 default:
567 err = ec_read(0x83, &result);
568 if (err)
569 return AE_ERROR;
570 *value = result;
571 return AE_OK;
572 }
573 break;
574 default:
575 return AE_ERROR;
576 }
577 return AE_OK;
578 }
579
580 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
581 {
582 struct wmab_args args;
583
584 args.eax = ACER_AMW0_WRITE;
585 args.ebx = value ? (1<<8) : 0;
586 args.ecx = args.edx = 0;
587
588 switch (cap) {
589 case ACER_CAP_MAILLED:
590 if (value > 1)
591 return AE_BAD_PARAMETER;
592 args.ebx |= ACER_AMW0_MAILLED_MASK;
593 break;
594 case ACER_CAP_WIRELESS:
595 if (value > 1)
596 return AE_BAD_PARAMETER;
597 args.ebx |= ACER_AMW0_WIRELESS_MASK;
598 break;
599 case ACER_CAP_BLUETOOTH:
600 if (value > 1)
601 return AE_BAD_PARAMETER;
602 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
603 break;
604 case ACER_CAP_BRIGHTNESS:
605 if (value > max_brightness)
606 return AE_BAD_PARAMETER;
607 switch (quirks->brightness) {
608 default:
609 return ec_write(0x83, value);
610 break;
611 }
612 default:
613 return AE_ERROR;
614 }
615
616 /* Actually do the set */
617 return wmab_execute(&args, NULL);
618 }
619
620 static acpi_status AMW0_find_mailled(void)
621 {
622 struct wmab_args args;
623 struct wmab_ret ret;
624 acpi_status status = AE_OK;
625 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
626 union acpi_object *obj;
627
628 args.eax = 0x86;
629 args.ebx = args.ecx = args.edx = 0;
630
631 status = wmab_execute(&args, &out);
632 if (ACPI_FAILURE(status))
633 return status;
634
635 obj = (union acpi_object *) out.pointer;
636 if (obj && obj->type == ACPI_TYPE_BUFFER &&
637 obj->buffer.length == sizeof(struct wmab_ret)) {
638 ret = *((struct wmab_ret *) obj->buffer.pointer);
639 } else {
640 kfree(out.pointer);
641 return AE_ERROR;
642 }
643
644 if (ret.eex & 0x1)
645 interface->capability |= ACER_CAP_MAILLED;
646
647 kfree(out.pointer);
648
649 return AE_OK;
650 }
651
652 static acpi_status AMW0_set_capabilities(void)
653 {
654 struct wmab_args args;
655 struct wmab_ret ret;
656 acpi_status status;
657 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
658 union acpi_object *obj;
659
660 /*
661 * On laptops with this strange GUID (non Acer), normal probing doesn't
662 * work.
663 */
664 if (wmi_has_guid(AMW0_GUID2)) {
665 interface->capability |= ACER_CAP_WIRELESS;
666 return AE_OK;
667 }
668
669 args.eax = ACER_AMW0_WRITE;
670 args.ecx = args.edx = 0;
671
672 args.ebx = 0xa2 << 8;
673 args.ebx |= ACER_AMW0_WIRELESS_MASK;
674
675 status = wmab_execute(&args, &out);
676 if (ACPI_FAILURE(status))
677 return status;
678
679 obj = out.pointer;
680 if (obj && obj->type == ACPI_TYPE_BUFFER &&
681 obj->buffer.length == sizeof(struct wmab_ret)) {
682 ret = *((struct wmab_ret *) obj->buffer.pointer);
683 } else {
684 status = AE_ERROR;
685 goto out;
686 }
687
688 if (ret.eax & 0x1)
689 interface->capability |= ACER_CAP_WIRELESS;
690
691 args.ebx = 2 << 8;
692 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
693
694 /*
695 * It's ok to use existing buffer for next wmab_execute call.
696 * But we need to kfree(out.pointer) if next wmab_execute fail.
697 */
698 status = wmab_execute(&args, &out);
699 if (ACPI_FAILURE(status))
700 goto out;
701
702 obj = (union acpi_object *) out.pointer;
703 if (obj && obj->type == ACPI_TYPE_BUFFER
704 && obj->buffer.length == sizeof(struct wmab_ret)) {
705 ret = *((struct wmab_ret *) obj->buffer.pointer);
706 } else {
707 status = AE_ERROR;
708 goto out;
709 }
710
711 if (ret.eax & 0x1)
712 interface->capability |= ACER_CAP_BLUETOOTH;
713
714 /*
715 * This appears to be safe to enable, since all Wistron based laptops
716 * appear to use the same EC register for brightness, even if they
717 * differ for wireless, etc
718 */
719 if (quirks->brightness >= 0)
720 interface->capability |= ACER_CAP_BRIGHTNESS;
721
722 status = AE_OK;
723 out:
724 kfree(out.pointer);
725 return status;
726 }
727
728 static struct wmi_interface AMW0_interface = {
729 .type = ACER_AMW0,
730 };
731
732 static struct wmi_interface AMW0_V2_interface = {
733 .type = ACER_AMW0_V2,
734 };
735
736 /*
737 * New interface (The WMID interface)
738 */
739 static acpi_status
740 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
741 {
742 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
743 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
744 union acpi_object *obj;
745 u32 tmp;
746 acpi_status status;
747
748 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
749
750 if (ACPI_FAILURE(status))
751 return status;
752
753 obj = (union acpi_object *) result.pointer;
754 if (obj && obj->type == ACPI_TYPE_BUFFER &&
755 (obj->buffer.length == sizeof(u32) ||
756 obj->buffer.length == sizeof(u64))) {
757 tmp = *((u32 *) obj->buffer.pointer);
758 } else if (obj->type == ACPI_TYPE_INTEGER) {
759 tmp = (u32) obj->integer.value;
760 } else {
761 tmp = 0;
762 }
763
764 if (out)
765 *out = tmp;
766
767 kfree(result.pointer);
768
769 return status;
770 }
771
772 static acpi_status WMID_get_u32(u32 *value, u32 cap,
773 struct wmi_interface *iface)
774 {
775 acpi_status status;
776 u8 tmp;
777 u32 result, method_id = 0;
778
779 switch (cap) {
780 case ACER_CAP_WIRELESS:
781 method_id = ACER_WMID_GET_WIRELESS_METHODID;
782 break;
783 case ACER_CAP_BLUETOOTH:
784 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
785 break;
786 case ACER_CAP_BRIGHTNESS:
787 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
788 break;
789 case ACER_CAP_THREEG:
790 method_id = ACER_WMID_GET_THREEG_METHODID;
791 break;
792 case ACER_CAP_MAILLED:
793 if (quirks->mailled == 1) {
794 ec_read(0x9f, &tmp);
795 *value = tmp & 0x1;
796 return 0;
797 }
798 default:
799 return AE_ERROR;
800 }
801 status = WMI_execute_u32(method_id, 0, &result);
802
803 if (ACPI_SUCCESS(status))
804 *value = (u8)result;
805
806 return status;
807 }
808
809 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
810 {
811 u32 method_id = 0;
812 char param;
813
814 switch (cap) {
815 case ACER_CAP_BRIGHTNESS:
816 if (value > max_brightness)
817 return AE_BAD_PARAMETER;
818 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
819 break;
820 case ACER_CAP_WIRELESS:
821 if (value > 1)
822 return AE_BAD_PARAMETER;
823 method_id = ACER_WMID_SET_WIRELESS_METHODID;
824 break;
825 case ACER_CAP_BLUETOOTH:
826 if (value > 1)
827 return AE_BAD_PARAMETER;
828 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
829 break;
830 case ACER_CAP_THREEG:
831 if (value > 1)
832 return AE_BAD_PARAMETER;
833 method_id = ACER_WMID_SET_THREEG_METHODID;
834 break;
835 case ACER_CAP_MAILLED:
836 if (value > 1)
837 return AE_BAD_PARAMETER;
838 if (quirks->mailled == 1) {
839 param = value ? 0x92 : 0x93;
840 i8042_lock_chip();
841 i8042_command(&param, 0x1059);
842 i8042_unlock_chip();
843 return 0;
844 }
845 break;
846 default:
847 return AE_ERROR;
848 }
849 return WMI_execute_u32(method_id, (u32)value, NULL);
850 }
851
852 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
853 {
854 struct hotkey_function_type_aa *type_aa;
855
856 /* We are looking for OEM-specific Type AAh */
857 if (header->type != 0xAA)
858 return;
859
860 has_type_aa = true;
861 type_aa = (struct hotkey_function_type_aa *) header;
862
863 pr_info("Function bitmap for Communication Button: 0x%x\n",
864 type_aa->commun_func_bitmap);
865
866 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
867 interface->capability |= ACER_CAP_WIRELESS;
868 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
869 interface->capability |= ACER_CAP_THREEG;
870 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
871 interface->capability |= ACER_CAP_BLUETOOTH;
872 }
873
874 static acpi_status WMID_set_capabilities(void)
875 {
876 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
877 union acpi_object *obj;
878 acpi_status status;
879 u32 devices;
880
881 status = wmi_query_block(WMID_GUID2, 1, &out);
882 if (ACPI_FAILURE(status))
883 return status;
884
885 obj = (union acpi_object *) out.pointer;
886 if (obj && obj->type == ACPI_TYPE_BUFFER &&
887 (obj->buffer.length == sizeof(u32) ||
888 obj->buffer.length == sizeof(u64))) {
889 devices = *((u32 *) obj->buffer.pointer);
890 } else if (obj->type == ACPI_TYPE_INTEGER) {
891 devices = (u32) obj->integer.value;
892 } else {
893 kfree(out.pointer);
894 return AE_ERROR;
895 }
896
897 dmi_walk(type_aa_dmi_decode, NULL);
898 if (!has_type_aa) {
899 interface->capability |= ACER_CAP_WIRELESS;
900 if (devices & 0x40)
901 interface->capability |= ACER_CAP_THREEG;
902 if (devices & 0x10)
903 interface->capability |= ACER_CAP_BLUETOOTH;
904 }
905
906 /* WMID always provides brightness methods */
907 interface->capability |= ACER_CAP_BRIGHTNESS;
908
909 if (!(devices & 0x20))
910 max_brightness = 0x9;
911
912 kfree(out.pointer);
913 return status;
914 }
915
916 static struct wmi_interface wmid_interface = {
917 .type = ACER_WMID,
918 };
919
920 /*
921 * Generic Device (interface-independent)
922 */
923
924 static acpi_status get_u32(u32 *value, u32 cap)
925 {
926 acpi_status status = AE_ERROR;
927
928 switch (interface->type) {
929 case ACER_AMW0:
930 status = AMW0_get_u32(value, cap, interface);
931 break;
932 case ACER_AMW0_V2:
933 if (cap == ACER_CAP_MAILLED) {
934 status = AMW0_get_u32(value, cap, interface);
935 break;
936 }
937 case ACER_WMID:
938 status = WMID_get_u32(value, cap, interface);
939 break;
940 }
941
942 return status;
943 }
944
945 static acpi_status set_u32(u32 value, u32 cap)
946 {
947 acpi_status status;
948
949 if (interface->capability & cap) {
950 switch (interface->type) {
951 case ACER_AMW0:
952 return AMW0_set_u32(value, cap, interface);
953 case ACER_AMW0_V2:
954 if (cap == ACER_CAP_MAILLED)
955 return AMW0_set_u32(value, cap, interface);
956
957 /*
958 * On some models, some WMID methods don't toggle
959 * properly. For those cases, we want to run the AMW0
960 * method afterwards to be certain we've really toggled
961 * the device state.
962 */
963 if (cap == ACER_CAP_WIRELESS ||
964 cap == ACER_CAP_BLUETOOTH) {
965 status = WMID_set_u32(value, cap, interface);
966 if (ACPI_FAILURE(status))
967 return status;
968
969 return AMW0_set_u32(value, cap, interface);
970 }
971 case ACER_WMID:
972 return WMID_set_u32(value, cap, interface);
973 default:
974 return AE_BAD_PARAMETER;
975 }
976 }
977 return AE_BAD_PARAMETER;
978 }
979
980 static void __init acer_commandline_init(void)
981 {
982 /*
983 * These will all fail silently if the value given is invalid, or the
984 * capability isn't available on the given interface
985 */
986 if (mailled >= 0)
987 set_u32(mailled, ACER_CAP_MAILLED);
988 if (!has_type_aa && threeg >= 0)
989 set_u32(threeg, ACER_CAP_THREEG);
990 if (brightness >= 0)
991 set_u32(brightness, ACER_CAP_BRIGHTNESS);
992 }
993
994 /*
995 * LED device (Mail LED only, no other LEDs known yet)
996 */
997 static void mail_led_set(struct led_classdev *led_cdev,
998 enum led_brightness value)
999 {
1000 set_u32(value, ACER_CAP_MAILLED);
1001 }
1002
1003 static struct led_classdev mail_led = {
1004 .name = "acer-wmi::mail",
1005 .brightness_set = mail_led_set,
1006 };
1007
1008 static int __devinit acer_led_init(struct device *dev)
1009 {
1010 return led_classdev_register(dev, &mail_led);
1011 }
1012
1013 static void acer_led_exit(void)
1014 {
1015 set_u32(LED_OFF, ACER_CAP_MAILLED);
1016 led_classdev_unregister(&mail_led);
1017 }
1018
1019 /*
1020 * Backlight device
1021 */
1022 static struct backlight_device *acer_backlight_device;
1023
1024 static int read_brightness(struct backlight_device *bd)
1025 {
1026 u32 value;
1027 get_u32(&value, ACER_CAP_BRIGHTNESS);
1028 return value;
1029 }
1030
1031 static int update_bl_status(struct backlight_device *bd)
1032 {
1033 int intensity = bd->props.brightness;
1034
1035 if (bd->props.power != FB_BLANK_UNBLANK)
1036 intensity = 0;
1037 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1038 intensity = 0;
1039
1040 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1041
1042 return 0;
1043 }
1044
1045 static const struct backlight_ops acer_bl_ops = {
1046 .get_brightness = read_brightness,
1047 .update_status = update_bl_status,
1048 };
1049
1050 static int __devinit acer_backlight_init(struct device *dev)
1051 {
1052 struct backlight_properties props;
1053 struct backlight_device *bd;
1054
1055 memset(&props, 0, sizeof(struct backlight_properties));
1056 props.type = BACKLIGHT_PLATFORM;
1057 props.max_brightness = max_brightness;
1058 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1059 &props);
1060 if (IS_ERR(bd)) {
1061 pr_err("Could not register Acer backlight device\n");
1062 acer_backlight_device = NULL;
1063 return PTR_ERR(bd);
1064 }
1065
1066 acer_backlight_device = bd;
1067
1068 bd->props.power = FB_BLANK_UNBLANK;
1069 bd->props.brightness = read_brightness(bd);
1070 backlight_update_status(bd);
1071 return 0;
1072 }
1073
1074 static void acer_backlight_exit(void)
1075 {
1076 backlight_device_unregister(acer_backlight_device);
1077 }
1078
1079 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1080 {
1081 struct wmid3_gds_return_value return_value;
1082 acpi_status status;
1083 union acpi_object *obj;
1084 struct wmid3_gds_input_param params = {
1085 .function_num = 0x1,
1086 .hotkey_number = 0x01,
1087 .devices = device,
1088 };
1089 struct acpi_buffer input = {
1090 sizeof(struct wmid3_gds_input_param),
1091 &params
1092 };
1093 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1094
1095 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1096 if (ACPI_FAILURE(status))
1097 return status;
1098
1099 obj = output.pointer;
1100
1101 if (!obj)
1102 return AE_ERROR;
1103 else if (obj->type != ACPI_TYPE_BUFFER) {
1104 kfree(obj);
1105 return AE_ERROR;
1106 }
1107 if (obj->buffer.length != 8) {
1108 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1109 kfree(obj);
1110 return AE_ERROR;
1111 }
1112
1113 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1114 kfree(obj);
1115
1116 if (return_value.error_code || return_value.ec_return_value)
1117 pr_warn("Get Device Status failed: 0x%x - 0x%x\n",
1118 return_value.error_code,
1119 return_value.ec_return_value);
1120 else
1121 *value = !!(return_value.devices & device);
1122
1123 return status;
1124 }
1125
1126 static acpi_status get_device_status(u32 *value, u32 cap)
1127 {
1128 if (wmi_has_guid(WMID_GUID3)) {
1129 u16 device;
1130
1131 switch (cap) {
1132 case ACER_CAP_WIRELESS:
1133 device = ACER_WMID3_GDS_WIRELESS;
1134 break;
1135 case ACER_CAP_BLUETOOTH:
1136 device = ACER_WMID3_GDS_BLUETOOTH;
1137 break;
1138 case ACER_CAP_THREEG:
1139 device = ACER_WMID3_GDS_THREEG;
1140 break;
1141 default:
1142 return AE_ERROR;
1143 }
1144 return wmid3_get_device_status(value, device);
1145
1146 } else {
1147 return get_u32(value, cap);
1148 }
1149 }
1150
1151 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1152 {
1153 struct wmid3_gds_return_value return_value;
1154 acpi_status status;
1155 union acpi_object *obj;
1156 u16 devices;
1157 struct wmid3_gds_input_param params = {
1158 .function_num = 0x1,
1159 .hotkey_number = 0x01,
1160 .devices = ACER_WMID3_GDS_WIRELESS |
1161 ACER_WMID3_GDS_THREEG |
1162 ACER_WMID3_GDS_WIMAX |
1163 ACER_WMID3_GDS_BLUETOOTH,
1164 };
1165 struct acpi_buffer input = {
1166 sizeof(struct wmid3_gds_input_param),
1167 &params
1168 };
1169 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1170 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1171
1172 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1173 if (ACPI_FAILURE(status))
1174 return status;
1175
1176 obj = output.pointer;
1177
1178 if (!obj)
1179 return AE_ERROR;
1180 else if (obj->type != ACPI_TYPE_BUFFER) {
1181 kfree(obj);
1182 return AE_ERROR;
1183 }
1184 if (obj->buffer.length != 8) {
1185 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1186 kfree(obj);
1187 return AE_ERROR;
1188 }
1189
1190 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1191 kfree(obj);
1192
1193 if (return_value.error_code || return_value.ec_return_value) {
1194 pr_warning("Get Current Device Status failed: "
1195 "0x%x - 0x%x\n", return_value.error_code,
1196 return_value.ec_return_value);
1197 return status;
1198 }
1199
1200 devices = return_value.devices;
1201 params.function_num = 0x2;
1202 params.hotkey_number = 0x01;
1203 params.devices = (value) ? (devices | device) : (devices & ~device);
1204
1205 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
1206 if (ACPI_FAILURE(status))
1207 return status;
1208
1209 obj = output2.pointer;
1210
1211 if (!obj)
1212 return AE_ERROR;
1213 else if (obj->type != ACPI_TYPE_BUFFER) {
1214 kfree(obj);
1215 return AE_ERROR;
1216 }
1217 if (obj->buffer.length != 4) {
1218 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1219 kfree(obj);
1220 return AE_ERROR;
1221 }
1222
1223 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1224 kfree(obj);
1225
1226 if (return_value.error_code || return_value.ec_return_value)
1227 pr_warning("Set Device Status failed: "
1228 "0x%x - 0x%x\n", return_value.error_code,
1229 return_value.ec_return_value);
1230
1231 return status;
1232 }
1233
1234 static acpi_status set_device_status(u32 value, u32 cap)
1235 {
1236 if (wmi_has_guid(WMID_GUID3)) {
1237 u16 device;
1238
1239 switch (cap) {
1240 case ACER_CAP_WIRELESS:
1241 device = ACER_WMID3_GDS_WIRELESS;
1242 break;
1243 case ACER_CAP_BLUETOOTH:
1244 device = ACER_WMID3_GDS_BLUETOOTH;
1245 break;
1246 case ACER_CAP_THREEG:
1247 device = ACER_WMID3_GDS_THREEG;
1248 break;
1249 default:
1250 return AE_ERROR;
1251 }
1252 return wmid3_set_device_status(value, device);
1253
1254 } else {
1255 return set_u32(value, cap);
1256 }
1257 }
1258
1259 /*
1260 * Rfkill devices
1261 */
1262 static void acer_rfkill_update(struct work_struct *ignored);
1263 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1264 static void acer_rfkill_update(struct work_struct *ignored)
1265 {
1266 u32 state;
1267 acpi_status status;
1268
1269 status = get_u32(&state, ACER_CAP_WIRELESS);
1270 if (ACPI_SUCCESS(status))
1271 rfkill_set_sw_state(wireless_rfkill, !state);
1272
1273 if (has_cap(ACER_CAP_BLUETOOTH)) {
1274 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1275 if (ACPI_SUCCESS(status))
1276 rfkill_set_sw_state(bluetooth_rfkill, !state);
1277 }
1278
1279 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1280 status = wmid3_get_device_status(&state,
1281 ACER_WMID3_GDS_THREEG);
1282 if (ACPI_SUCCESS(status))
1283 rfkill_set_sw_state(threeg_rfkill, !state);
1284 }
1285
1286 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1287 }
1288
1289 static int acer_rfkill_set(void *data, bool blocked)
1290 {
1291 acpi_status status;
1292 u32 cap = (unsigned long)data;
1293
1294 if (rfkill_inited) {
1295 status = set_device_status(!blocked, cap);
1296 if (ACPI_FAILURE(status))
1297 return -ENODEV;
1298 }
1299
1300 return 0;
1301 }
1302
1303 static const struct rfkill_ops acer_rfkill_ops = {
1304 .set_block = acer_rfkill_set,
1305 };
1306
1307 static struct rfkill *acer_rfkill_register(struct device *dev,
1308 enum rfkill_type type,
1309 char *name, u32 cap)
1310 {
1311 int err;
1312 struct rfkill *rfkill_dev;
1313 u32 state;
1314 acpi_status status;
1315
1316 rfkill_dev = rfkill_alloc(name, dev, type,
1317 &acer_rfkill_ops,
1318 (void *)(unsigned long)cap);
1319 if (!rfkill_dev)
1320 return ERR_PTR(-ENOMEM);
1321
1322 status = get_device_status(&state, cap);
1323
1324 err = rfkill_register(rfkill_dev);
1325 if (err) {
1326 rfkill_destroy(rfkill_dev);
1327 return ERR_PTR(err);
1328 }
1329
1330 if (ACPI_SUCCESS(status))
1331 rfkill_set_sw_state(rfkill_dev, !state);
1332
1333 return rfkill_dev;
1334 }
1335
1336 static int acer_rfkill_init(struct device *dev)
1337 {
1338 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1339 "acer-wireless", ACER_CAP_WIRELESS);
1340 if (IS_ERR(wireless_rfkill))
1341 return PTR_ERR(wireless_rfkill);
1342
1343 if (has_cap(ACER_CAP_BLUETOOTH)) {
1344 bluetooth_rfkill = acer_rfkill_register(dev,
1345 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1346 ACER_CAP_BLUETOOTH);
1347 if (IS_ERR(bluetooth_rfkill)) {
1348 rfkill_unregister(wireless_rfkill);
1349 rfkill_destroy(wireless_rfkill);
1350 return PTR_ERR(bluetooth_rfkill);
1351 }
1352 }
1353
1354 if (has_cap(ACER_CAP_THREEG)) {
1355 threeg_rfkill = acer_rfkill_register(dev,
1356 RFKILL_TYPE_WWAN, "acer-threeg",
1357 ACER_CAP_THREEG);
1358 if (IS_ERR(threeg_rfkill)) {
1359 rfkill_unregister(wireless_rfkill);
1360 rfkill_destroy(wireless_rfkill);
1361 rfkill_unregister(bluetooth_rfkill);
1362 rfkill_destroy(bluetooth_rfkill);
1363 return PTR_ERR(threeg_rfkill);
1364 }
1365 }
1366
1367 rfkill_inited = true;
1368
1369 if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1370 schedule_delayed_work(&acer_rfkill_work,
1371 round_jiffies_relative(HZ));
1372
1373 return 0;
1374 }
1375
1376 static void acer_rfkill_exit(void)
1377 {
1378 if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1379 cancel_delayed_work_sync(&acer_rfkill_work);
1380
1381 rfkill_unregister(wireless_rfkill);
1382 rfkill_destroy(wireless_rfkill);
1383
1384 if (has_cap(ACER_CAP_BLUETOOTH)) {
1385 rfkill_unregister(bluetooth_rfkill);
1386 rfkill_destroy(bluetooth_rfkill);
1387 }
1388
1389 if (has_cap(ACER_CAP_THREEG)) {
1390 rfkill_unregister(threeg_rfkill);
1391 rfkill_destroy(threeg_rfkill);
1392 }
1393 return;
1394 }
1395
1396 /*
1397 * sysfs interface
1398 */
1399 static ssize_t show_bool_threeg(struct device *dev,
1400 struct device_attribute *attr, char *buf)
1401 {
1402 u32 result; \
1403 acpi_status status;
1404
1405 pr_info("This threeg sysfs will be removed in 2012"
1406 " - used by: %s\n", current->comm);
1407 if (wmi_has_guid(WMID_GUID3))
1408 status = wmid3_get_device_status(&result,
1409 ACER_WMID3_GDS_THREEG);
1410 else
1411 status = get_u32(&result, ACER_CAP_THREEG);
1412 if (ACPI_SUCCESS(status))
1413 return sprintf(buf, "%u\n", result);
1414 return sprintf(buf, "Read error\n");
1415 }
1416
1417 static ssize_t set_bool_threeg(struct device *dev,
1418 struct device_attribute *attr, const char *buf, size_t count)
1419 {
1420 u32 tmp = simple_strtoul(buf, NULL, 10);
1421 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1422 pr_info("This threeg sysfs will be removed in 2012"
1423 " - used by: %s\n", current->comm);
1424 if (ACPI_FAILURE(status))
1425 return -EINVAL;
1426 return count;
1427 }
1428 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1429 set_bool_threeg);
1430
1431 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1432 char *buf)
1433 {
1434 pr_info("This interface sysfs will be removed in 2012"
1435 " - used by: %s\n", current->comm);
1436 switch (interface->type) {
1437 case ACER_AMW0:
1438 return sprintf(buf, "AMW0\n");
1439 case ACER_AMW0_V2:
1440 return sprintf(buf, "AMW0 v2\n");
1441 case ACER_WMID:
1442 return sprintf(buf, "WMID\n");
1443 default:
1444 return sprintf(buf, "Error!\n");
1445 }
1446 }
1447
1448 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1449
1450 static void acer_wmi_notify(u32 value, void *context)
1451 {
1452 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1453 union acpi_object *obj;
1454 struct event_return_value return_value;
1455 acpi_status status;
1456 u16 device_state;
1457 const struct key_entry *key;
1458
1459 status = wmi_get_event_data(value, &response);
1460 if (status != AE_OK) {
1461 pr_warn("bad event status 0x%x\n", status);
1462 return;
1463 }
1464
1465 obj = (union acpi_object *)response.pointer;
1466
1467 if (!obj)
1468 return;
1469 if (obj->type != ACPI_TYPE_BUFFER) {
1470 pr_warn("Unknown response received %d\n", obj->type);
1471 kfree(obj);
1472 return;
1473 }
1474 if (obj->buffer.length != 8) {
1475 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1476 kfree(obj);
1477 return;
1478 }
1479
1480 return_value = *((struct event_return_value *)obj->buffer.pointer);
1481 kfree(obj);
1482
1483 switch (return_value.function) {
1484 case WMID_HOTKEY_EVENT:
1485 device_state = return_value.device_state;
1486 pr_debug("device state: 0x%x\n", device_state);
1487
1488 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1489 return_value.key_num);
1490 if (!key) {
1491 pr_warn("Unknown key number - 0x%x\n",
1492 return_value.key_num);
1493 } else {
1494 switch (key->keycode) {
1495 case KEY_WLAN:
1496 case KEY_BLUETOOTH:
1497 if (has_cap(ACER_CAP_WIRELESS))
1498 rfkill_set_sw_state(wireless_rfkill,
1499 !(device_state & ACER_WMID3_GDS_WIRELESS));
1500 if (has_cap(ACER_CAP_THREEG))
1501 rfkill_set_sw_state(threeg_rfkill,
1502 !(device_state & ACER_WMID3_GDS_THREEG));
1503 if (has_cap(ACER_CAP_BLUETOOTH))
1504 rfkill_set_sw_state(bluetooth_rfkill,
1505 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1506 break;
1507 }
1508 sparse_keymap_report_entry(acer_wmi_input_dev, key,
1509 1, true);
1510 }
1511 break;
1512 default:
1513 pr_warn("Unknown function number - %d - %d\n",
1514 return_value.function, return_value.key_num);
1515 break;
1516 }
1517 }
1518
1519 static acpi_status
1520 wmid3_set_lm_mode(struct lm_input_params *params,
1521 struct lm_return_value *return_value)
1522 {
1523 acpi_status status;
1524 union acpi_object *obj;
1525
1526 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1527 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1528
1529 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1530 if (ACPI_FAILURE(status))
1531 return status;
1532
1533 obj = output.pointer;
1534
1535 if (!obj)
1536 return AE_ERROR;
1537 else if (obj->type != ACPI_TYPE_BUFFER) {
1538 kfree(obj);
1539 return AE_ERROR;
1540 }
1541 if (obj->buffer.length != 4) {
1542 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1543 kfree(obj);
1544 return AE_ERROR;
1545 }
1546
1547 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1548 kfree(obj);
1549
1550 return status;
1551 }
1552
1553 static int acer_wmi_enable_ec_raw(void)
1554 {
1555 struct lm_return_value return_value;
1556 acpi_status status;
1557 struct lm_input_params params = {
1558 .function_num = 0x1,
1559 .commun_devices = 0xFFFF,
1560 .devices = 0xFFFF,
1561 .lm_status = 0x00, /* Launch Manager Deactive */
1562 };
1563
1564 status = wmid3_set_lm_mode(&params, &return_value);
1565
1566 if (return_value.error_code || return_value.ec_return_value)
1567 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1568 return_value.error_code,
1569 return_value.ec_return_value);
1570 else
1571 pr_info("Enabled EC raw mode\n");
1572
1573 return status;
1574 }
1575
1576 static int acer_wmi_enable_lm(void)
1577 {
1578 struct lm_return_value return_value;
1579 acpi_status status;
1580 struct lm_input_params params = {
1581 .function_num = 0x1,
1582 .commun_devices = 0xFFFF,
1583 .devices = 0xFFFF,
1584 .lm_status = 0x01, /* Launch Manager Active */
1585 };
1586
1587 status = wmid3_set_lm_mode(&params, &return_value);
1588
1589 if (return_value.error_code || return_value.ec_return_value)
1590 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1591 return_value.error_code,
1592 return_value.ec_return_value);
1593
1594 return status;
1595 }
1596
1597 static int __init acer_wmi_input_setup(void)
1598 {
1599 acpi_status status;
1600 int err;
1601
1602 acer_wmi_input_dev = input_allocate_device();
1603 if (!acer_wmi_input_dev)
1604 return -ENOMEM;
1605
1606 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1607 acer_wmi_input_dev->phys = "wmi/input0";
1608 acer_wmi_input_dev->id.bustype = BUS_HOST;
1609
1610 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1611 if (err)
1612 goto err_free_dev;
1613
1614 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1615 acer_wmi_notify, NULL);
1616 if (ACPI_FAILURE(status)) {
1617 err = -EIO;
1618 goto err_free_keymap;
1619 }
1620
1621 err = input_register_device(acer_wmi_input_dev);
1622 if (err)
1623 goto err_uninstall_notifier;
1624
1625 return 0;
1626
1627 err_uninstall_notifier:
1628 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1629 err_free_keymap:
1630 sparse_keymap_free(acer_wmi_input_dev);
1631 err_free_dev:
1632 input_free_device(acer_wmi_input_dev);
1633 return err;
1634 }
1635
1636 static void acer_wmi_input_destroy(void)
1637 {
1638 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1639 sparse_keymap_free(acer_wmi_input_dev);
1640 input_unregister_device(acer_wmi_input_dev);
1641 }
1642
1643 /*
1644 * debugfs functions
1645 */
1646 static u32 get_wmid_devices(void)
1647 {
1648 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1649 union acpi_object *obj;
1650 acpi_status status;
1651 u32 devices = 0;
1652
1653 status = wmi_query_block(WMID_GUID2, 1, &out);
1654 if (ACPI_FAILURE(status))
1655 return 0;
1656
1657 obj = (union acpi_object *) out.pointer;
1658 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1659 (obj->buffer.length == sizeof(u32) ||
1660 obj->buffer.length == sizeof(u64))) {
1661 devices = *((u32 *) obj->buffer.pointer);
1662 } else if (obj->type == ACPI_TYPE_INTEGER) {
1663 devices = (u32) obj->integer.value;
1664 }
1665
1666 kfree(out.pointer);
1667 return devices;
1668 }
1669
1670 /*
1671 * Platform device
1672 */
1673 static int __devinit acer_platform_probe(struct platform_device *device)
1674 {
1675 int err;
1676
1677 if (has_cap(ACER_CAP_MAILLED)) {
1678 err = acer_led_init(&device->dev);
1679 if (err)
1680 goto error_mailled;
1681 }
1682
1683 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1684 err = acer_backlight_init(&device->dev);
1685 if (err)
1686 goto error_brightness;
1687 }
1688
1689 err = acer_rfkill_init(&device->dev);
1690 if (err)
1691 goto error_rfkill;
1692
1693 return err;
1694
1695 error_rfkill:
1696 if (has_cap(ACER_CAP_BRIGHTNESS))
1697 acer_backlight_exit();
1698 error_brightness:
1699 if (has_cap(ACER_CAP_MAILLED))
1700 acer_led_exit();
1701 error_mailled:
1702 return err;
1703 }
1704
1705 static int acer_platform_remove(struct platform_device *device)
1706 {
1707 if (has_cap(ACER_CAP_MAILLED))
1708 acer_led_exit();
1709 if (has_cap(ACER_CAP_BRIGHTNESS))
1710 acer_backlight_exit();
1711
1712 acer_rfkill_exit();
1713 return 0;
1714 }
1715
1716 static int acer_platform_suspend(struct platform_device *dev,
1717 pm_message_t state)
1718 {
1719 u32 value;
1720 struct acer_data *data = &interface->data;
1721
1722 if (!data)
1723 return -ENOMEM;
1724
1725 if (has_cap(ACER_CAP_MAILLED)) {
1726 get_u32(&value, ACER_CAP_MAILLED);
1727 set_u32(LED_OFF, ACER_CAP_MAILLED);
1728 data->mailled = value;
1729 }
1730
1731 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1732 get_u32(&value, ACER_CAP_BRIGHTNESS);
1733 data->brightness = value;
1734 }
1735
1736 return 0;
1737 }
1738
1739 static int acer_platform_resume(struct platform_device *device)
1740 {
1741 struct acer_data *data = &interface->data;
1742
1743 if (!data)
1744 return -ENOMEM;
1745
1746 if (has_cap(ACER_CAP_MAILLED))
1747 set_u32(data->mailled, ACER_CAP_MAILLED);
1748
1749 if (has_cap(ACER_CAP_BRIGHTNESS))
1750 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1751
1752 return 0;
1753 }
1754
1755 static void acer_platform_shutdown(struct platform_device *device)
1756 {
1757 struct acer_data *data = &interface->data;
1758
1759 if (!data)
1760 return;
1761
1762 if (has_cap(ACER_CAP_MAILLED))
1763 set_u32(LED_OFF, ACER_CAP_MAILLED);
1764 }
1765
1766 static struct platform_driver acer_platform_driver = {
1767 .driver = {
1768 .name = "acer-wmi",
1769 .owner = THIS_MODULE,
1770 },
1771 .probe = acer_platform_probe,
1772 .remove = acer_platform_remove,
1773 .suspend = acer_platform_suspend,
1774 .resume = acer_platform_resume,
1775 .shutdown = acer_platform_shutdown,
1776 };
1777
1778 static struct platform_device *acer_platform_device;
1779
1780 static int remove_sysfs(struct platform_device *device)
1781 {
1782 if (has_cap(ACER_CAP_THREEG))
1783 device_remove_file(&device->dev, &dev_attr_threeg);
1784
1785 device_remove_file(&device->dev, &dev_attr_interface);
1786
1787 return 0;
1788 }
1789
1790 static int create_sysfs(void)
1791 {
1792 int retval = -ENOMEM;
1793
1794 if (has_cap(ACER_CAP_THREEG)) {
1795 retval = device_create_file(&acer_platform_device->dev,
1796 &dev_attr_threeg);
1797 if (retval)
1798 goto error_sysfs;
1799 }
1800
1801 retval = device_create_file(&acer_platform_device->dev,
1802 &dev_attr_interface);
1803 if (retval)
1804 goto error_sysfs;
1805
1806 return 0;
1807
1808 error_sysfs:
1809 remove_sysfs(acer_platform_device);
1810 return retval;
1811 }
1812
1813 static void remove_debugfs(void)
1814 {
1815 debugfs_remove(interface->debug.devices);
1816 debugfs_remove(interface->debug.root);
1817 }
1818
1819 static int create_debugfs(void)
1820 {
1821 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1822 if (!interface->debug.root) {
1823 pr_err("Failed to create debugfs directory");
1824 return -ENOMEM;
1825 }
1826
1827 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1828 interface->debug.root,
1829 &interface->debug.wmid_devices);
1830 if (!interface->debug.devices)
1831 goto error_debugfs;
1832
1833 return 0;
1834
1835 error_debugfs:
1836 remove_debugfs();
1837 return -ENOMEM;
1838 }
1839
1840 static int __init acer_wmi_init(void)
1841 {
1842 int err;
1843
1844 pr_info("Acer Laptop ACPI-WMI Extras\n");
1845
1846 if (dmi_check_system(acer_blacklist)) {
1847 pr_info("Blacklisted hardware detected - not loading\n");
1848 return -ENODEV;
1849 }
1850
1851 find_quirks();
1852
1853 /*
1854 * Detect which ACPI-WMI interface we're using.
1855 */
1856 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1857 interface = &AMW0_V2_interface;
1858
1859 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1860 interface = &wmid_interface;
1861
1862 if (wmi_has_guid(WMID_GUID2) && interface) {
1863 if (ACPI_FAILURE(WMID_set_capabilities())) {
1864 pr_err("Unable to detect available WMID devices\n");
1865 return -ENODEV;
1866 }
1867 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1868 pr_err("No WMID device detection method found\n");
1869 return -ENODEV;
1870 }
1871
1872 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1873 interface = &AMW0_interface;
1874
1875 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1876 pr_err("Unable to detect available AMW0 devices\n");
1877 return -ENODEV;
1878 }
1879 }
1880
1881 if (wmi_has_guid(AMW0_GUID1))
1882 AMW0_find_mailled();
1883
1884 if (!interface) {
1885 pr_err("No or unsupported WMI interface, unable to load\n");
1886 return -ENODEV;
1887 }
1888
1889 set_quirks();
1890
1891 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1892 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1893 pr_info("Brightness must be controlled by "
1894 "generic video driver\n");
1895 }
1896
1897 if (wmi_has_guid(WMID_GUID3)) {
1898 if (ec_raw_mode) {
1899 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1900 pr_err("Cannot enable EC raw mode\n");
1901 return -ENODEV;
1902 }
1903 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1904 pr_err("Cannot enable Launch Manager mode\n");
1905 return -ENODEV;
1906 }
1907 } else if (ec_raw_mode) {
1908 pr_info("No WMID EC raw mode enable method\n");
1909 }
1910
1911 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1912 err = acer_wmi_input_setup();
1913 if (err)
1914 return err;
1915 }
1916
1917 err = platform_driver_register(&acer_platform_driver);
1918 if (err) {
1919 pr_err("Unable to register platform driver.\n");
1920 goto error_platform_register;
1921 }
1922
1923 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1924 if (!acer_platform_device) {
1925 err = -ENOMEM;
1926 goto error_device_alloc;
1927 }
1928
1929 err = platform_device_add(acer_platform_device);
1930 if (err)
1931 goto error_device_add;
1932
1933 err = create_sysfs();
1934 if (err)
1935 goto error_create_sys;
1936
1937 if (wmi_has_guid(WMID_GUID2)) {
1938 interface->debug.wmid_devices = get_wmid_devices();
1939 err = create_debugfs();
1940 if (err)
1941 goto error_create_debugfs;
1942 }
1943
1944 /* Override any initial settings with values from the commandline */
1945 acer_commandline_init();
1946
1947 return 0;
1948
1949 error_create_debugfs:
1950 remove_sysfs(acer_platform_device);
1951 error_create_sys:
1952 platform_device_del(acer_platform_device);
1953 error_device_add:
1954 platform_device_put(acer_platform_device);
1955 error_device_alloc:
1956 platform_driver_unregister(&acer_platform_driver);
1957 error_platform_register:
1958 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1959 acer_wmi_input_destroy();
1960
1961 return err;
1962 }
1963
1964 static void __exit acer_wmi_exit(void)
1965 {
1966 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1967 acer_wmi_input_destroy();
1968
1969 remove_sysfs(acer_platform_device);
1970 remove_debugfs();
1971 platform_device_unregister(acer_platform_device);
1972 platform_driver_unregister(&acer_platform_driver);
1973
1974 pr_info("Acer Laptop WMI Extras unloaded\n");
1975 return;
1976 }
1977
1978 module_init(acer_wmi_init);
1979 module_exit(acer_wmi_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree