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745a5d21 CC |
1 | /* |
2 | * Acer WMI Laptop Extras | |
3 | * | |
4 | * Copyright (C) 2007-2008 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 ACER_WMI_VERSION "0.1" | |
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/backlight.h> | |
33 | #include <linux/leds.h> | |
34 | #include <linux/platform_device.h> | |
35 | #include <linux/acpi.h> | |
36 | #include <linux/i8042.h> | |
37 | ||
38 | #include <acpi/acpi_drivers.h> | |
39 | ||
40 | MODULE_AUTHOR("Carlos Corbacho"); | |
41 | MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver"); | |
42 | MODULE_LICENSE("GPL"); | |
43 | ||
44 | #define ACER_LOGPREFIX "acer-wmi: " | |
45 | #define ACER_ERR KERN_ERR ACER_LOGPREFIX | |
46 | #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX | |
47 | #define ACER_INFO KERN_INFO ACER_LOGPREFIX | |
48 | ||
49 | /* | |
50 | * The following defines quirks to get some specific functions to work | |
51 | * which are known to not be supported over ACPI-WMI (such as the mail LED | |
52 | * on WMID based Acer's) | |
53 | */ | |
54 | struct acer_quirks { | |
55 | const char *vendor; | |
56 | const char *model; | |
57 | u16 quirks; | |
58 | }; | |
59 | ||
60 | /* | |
61 | * Magic Number | |
62 | * Meaning is unknown - this number is required for writing to ACPI for AMW0 | |
63 | * (it's also used in acerhk when directly accessing the BIOS) | |
64 | */ | |
65 | #define ACER_AMW0_WRITE 0x9610 | |
66 | ||
67 | /* | |
68 | * Bit masks for the AMW0 interface | |
69 | */ | |
70 | #define ACER_AMW0_WIRELESS_MASK 0x35 | |
71 | #define ACER_AMW0_BLUETOOTH_MASK 0x34 | |
72 | #define ACER_AMW0_MAILLED_MASK 0x31 | |
73 | ||
74 | /* | |
75 | * Method IDs for WMID interface | |
76 | */ | |
77 | #define ACER_WMID_GET_WIRELESS_METHODID 1 | |
78 | #define ACER_WMID_GET_BLUETOOTH_METHODID 2 | |
79 | #define ACER_WMID_GET_BRIGHTNESS_METHODID 3 | |
80 | #define ACER_WMID_SET_WIRELESS_METHODID 4 | |
81 | #define ACER_WMID_SET_BLUETOOTH_METHODID 5 | |
82 | #define ACER_WMID_SET_BRIGHTNESS_METHODID 6 | |
83 | #define ACER_WMID_GET_THREEG_METHODID 10 | |
84 | #define ACER_WMID_SET_THREEG_METHODID 11 | |
85 | ||
86 | /* | |
87 | * Acer ACPI method GUIDs | |
88 | */ | |
89 | #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB" | |
90 | #define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3" | |
91 | #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A" | |
92 | ||
93 | MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB"); | |
94 | MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"); | |
95 | ||
96 | /* Temporary workaround until the WMI sysfs interface goes in */ | |
97 | MODULE_ALIAS("dmi:*:*Acer*:*:"); | |
98 | ||
99 | /* | |
100 | * Interface capability flags | |
101 | */ | |
102 | #define ACER_CAP_MAILLED (1<<0) | |
103 | #define ACER_CAP_WIRELESS (1<<1) | |
104 | #define ACER_CAP_BLUETOOTH (1<<2) | |
105 | #define ACER_CAP_BRIGHTNESS (1<<3) | |
106 | #define ACER_CAP_THREEG (1<<4) | |
107 | #define ACER_CAP_ANY (0xFFFFFFFF) | |
108 | ||
109 | /* | |
110 | * Interface type flags | |
111 | */ | |
112 | enum interface_flags { | |
113 | ACER_AMW0, | |
114 | ACER_AMW0_V2, | |
115 | ACER_WMID, | |
116 | }; | |
117 | ||
118 | #define ACER_DEFAULT_WIRELESS 0 | |
119 | #define ACER_DEFAULT_BLUETOOTH 0 | |
120 | #define ACER_DEFAULT_MAILLED 0 | |
121 | #define ACER_DEFAULT_THREEG 0 | |
122 | ||
123 | static int max_brightness = 0xF; | |
124 | ||
125 | static int wireless = -1; | |
126 | static int bluetooth = -1; | |
127 | static int mailled = -1; | |
128 | static int brightness = -1; | |
129 | static int threeg = -1; | |
130 | static int force_series; | |
131 | ||
132 | module_param(mailled, int, 0444); | |
133 | module_param(wireless, int, 0444); | |
134 | module_param(bluetooth, int, 0444); | |
135 | module_param(brightness, int, 0444); | |
136 | module_param(threeg, int, 0444); | |
137 | module_param(force_series, int, 0444); | |
138 | MODULE_PARM_DESC(wireless, "Set initial state of Wireless hardware"); | |
139 | MODULE_PARM_DESC(bluetooth, "Set initial state of Bluetooth hardware"); | |
140 | MODULE_PARM_DESC(mailled, "Set initial state of Mail LED"); | |
141 | MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness"); | |
142 | MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware"); | |
143 | MODULE_PARM_DESC(force_series, "Force a different laptop series"); | |
144 | ||
145 | struct acer_data { | |
146 | int mailled; | |
147 | int wireless; | |
148 | int bluetooth; | |
149 | int threeg; | |
150 | int brightness; | |
151 | }; | |
152 | ||
153 | /* Each low-level interface must define at least some of the following */ | |
154 | struct wmi_interface { | |
155 | /* The WMI device type */ | |
156 | u32 type; | |
157 | ||
158 | /* The capabilities this interface provides */ | |
159 | u32 capability; | |
160 | ||
161 | /* Private data for the current interface */ | |
162 | struct acer_data data; | |
163 | }; | |
164 | ||
165 | /* The static interface pointer, points to the currently detected interface */ | |
166 | static struct wmi_interface *interface; | |
167 | ||
168 | /* | |
169 | * Embedded Controller quirks | |
170 | * Some laptops require us to directly access the EC to either enable or query | |
171 | * features that are not available through WMI. | |
172 | */ | |
173 | ||
174 | struct quirk_entry { | |
175 | u8 wireless; | |
176 | u8 mailled; | |
177 | u8 brightness; | |
178 | u8 bluetooth; | |
179 | }; | |
180 | ||
181 | static struct quirk_entry *quirks; | |
182 | ||
183 | static void set_quirks(void) | |
184 | { | |
185 | if (quirks->mailled) | |
186 | interface->capability |= ACER_CAP_MAILLED; | |
187 | ||
188 | if (quirks->brightness) | |
189 | interface->capability |= ACER_CAP_BRIGHTNESS; | |
190 | } | |
191 | ||
192 | static int dmi_matched(const struct dmi_system_id *dmi) | |
193 | { | |
194 | quirks = dmi->driver_data; | |
195 | return 0; | |
196 | } | |
197 | ||
198 | static struct quirk_entry quirk_unknown = { | |
199 | }; | |
200 | ||
201 | static struct quirk_entry quirk_acer_travelmate_2490 = { | |
202 | .mailled = 1, | |
203 | }; | |
204 | ||
205 | /* This AMW0 laptop has no bluetooth */ | |
206 | static struct quirk_entry quirk_medion_md_98300 = { | |
207 | .wireless = 1, | |
208 | }; | |
209 | ||
210 | static struct dmi_system_id acer_quirks[] = { | |
211 | { | |
212 | .callback = dmi_matched, | |
213 | .ident = "Acer Aspire 3100", | |
214 | .matches = { | |
215 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
216 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"), | |
217 | }, | |
218 | .driver_data = &quirk_acer_travelmate_2490, | |
219 | }, | |
ed9cfe98 CC |
220 | { |
221 | .callback = dmi_matched, | |
222 | .ident = "Acer Aspire 3610", | |
223 | .matches = { | |
224 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
225 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"), | |
226 | }, | |
227 | .driver_data = &quirk_acer_travelmate_2490, | |
228 | }, | |
745a5d21 CC |
229 | { |
230 | .callback = dmi_matched, | |
231 | .ident = "Acer Aspire 5100", | |
232 | .matches = { | |
233 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
234 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"), | |
235 | }, | |
236 | .driver_data = &quirk_acer_travelmate_2490, | |
237 | }, | |
ed9cfe98 CC |
238 | { |
239 | .callback = dmi_matched, | |
240 | .ident = "Acer Aspire 5610", | |
241 | .matches = { | |
242 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
243 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"), | |
244 | }, | |
245 | .driver_data = &quirk_acer_travelmate_2490, | |
246 | }, | |
745a5d21 CC |
247 | { |
248 | .callback = dmi_matched, | |
249 | .ident = "Acer Aspire 5630", | |
250 | .matches = { | |
251 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
252 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"), | |
253 | }, | |
254 | .driver_data = &quirk_acer_travelmate_2490, | |
255 | }, | |
256 | { | |
257 | .callback = dmi_matched, | |
258 | .ident = "Acer Aspire 5650", | |
259 | .matches = { | |
260 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
261 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"), | |
262 | }, | |
263 | .driver_data = &quirk_acer_travelmate_2490, | |
264 | }, | |
265 | { | |
266 | .callback = dmi_matched, | |
267 | .ident = "Acer Aspire 5680", | |
268 | .matches = { | |
269 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
270 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"), | |
271 | }, | |
272 | .driver_data = &quirk_acer_travelmate_2490, | |
273 | }, | |
274 | { | |
275 | .callback = dmi_matched, | |
276 | .ident = "Acer Aspire 9110", | |
277 | .matches = { | |
278 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
279 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"), | |
280 | }, | |
281 | .driver_data = &quirk_acer_travelmate_2490, | |
282 | }, | |
283 | { | |
284 | .callback = dmi_matched, | |
285 | .ident = "Acer TravelMate 2490", | |
286 | .matches = { | |
287 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
288 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"), | |
289 | }, | |
290 | .driver_data = &quirk_acer_travelmate_2490, | |
291 | }, | |
262ee35b CC |
292 | { |
293 | .callback = dmi_matched, | |
294 | .ident = "Acer TravelMate 4200", | |
295 | .matches = { | |
296 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
297 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"), | |
298 | }, | |
299 | .driver_data = &quirk_acer_travelmate_2490, | |
300 | }, | |
745a5d21 CC |
301 | { |
302 | .callback = dmi_matched, | |
303 | .ident = "Medion MD 98300", | |
304 | .matches = { | |
305 | DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), | |
306 | DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"), | |
307 | }, | |
308 | .driver_data = &quirk_medion_md_98300, | |
309 | }, | |
310 | {} | |
311 | }; | |
312 | ||
313 | /* Find which quirks are needed for a particular vendor/ model pair */ | |
314 | static void find_quirks(void) | |
315 | { | |
316 | if (!force_series) { | |
317 | dmi_check_system(acer_quirks); | |
318 | } else if (force_series == 2490) { | |
319 | quirks = &quirk_acer_travelmate_2490; | |
320 | } | |
321 | ||
322 | if (quirks == NULL) | |
323 | quirks = &quirk_unknown; | |
324 | ||
325 | set_quirks(); | |
326 | } | |
327 | ||
328 | /* | |
329 | * General interface convenience methods | |
330 | */ | |
331 | ||
332 | static bool has_cap(u32 cap) | |
333 | { | |
334 | if ((interface->capability & cap) != 0) | |
335 | return 1; | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | /* | |
341 | * AMW0 (V1) interface | |
342 | */ | |
343 | struct wmab_args { | |
344 | u32 eax; | |
345 | u32 ebx; | |
346 | u32 ecx; | |
347 | u32 edx; | |
348 | }; | |
349 | ||
350 | struct wmab_ret { | |
351 | u32 eax; | |
352 | u32 ebx; | |
353 | u32 ecx; | |
354 | u32 edx; | |
355 | u32 eex; | |
356 | }; | |
357 | ||
358 | static acpi_status wmab_execute(struct wmab_args *regbuf, | |
359 | struct acpi_buffer *result) | |
360 | { | |
361 | struct acpi_buffer input; | |
362 | acpi_status status; | |
363 | input.length = sizeof(struct wmab_args); | |
364 | input.pointer = (u8 *)regbuf; | |
365 | ||
366 | status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result); | |
367 | ||
368 | return status; | |
369 | } | |
370 | ||
371 | static acpi_status AMW0_get_u32(u32 *value, u32 cap, | |
372 | struct wmi_interface *iface) | |
373 | { | |
374 | int err; | |
375 | u8 result; | |
376 | ||
377 | switch (cap) { | |
378 | case ACER_CAP_MAILLED: | |
379 | switch (quirks->mailled) { | |
380 | default: | |
381 | err = ec_read(0xA, &result); | |
382 | if (err) | |
383 | return AE_ERROR; | |
384 | *value = (result >> 7) & 0x1; | |
385 | return AE_OK; | |
386 | } | |
387 | break; | |
388 | case ACER_CAP_WIRELESS: | |
389 | switch (quirks->wireless) { | |
390 | case 1: | |
391 | err = ec_read(0x7B, &result); | |
392 | if (err) | |
393 | return AE_ERROR; | |
394 | *value = result & 0x1; | |
395 | return AE_OK; | |
396 | default: | |
397 | err = ec_read(0xA, &result); | |
398 | if (err) | |
399 | return AE_ERROR; | |
400 | *value = (result >> 2) & 0x1; | |
401 | return AE_OK; | |
402 | } | |
403 | break; | |
404 | case ACER_CAP_BLUETOOTH: | |
405 | switch (quirks->bluetooth) { | |
406 | default: | |
407 | err = ec_read(0xA, &result); | |
408 | if (err) | |
409 | return AE_ERROR; | |
410 | *value = (result >> 4) & 0x1; | |
411 | return AE_OK; | |
412 | } | |
413 | break; | |
414 | case ACER_CAP_BRIGHTNESS: | |
415 | switch (quirks->brightness) { | |
416 | default: | |
417 | err = ec_read(0x83, &result); | |
418 | if (err) | |
419 | return AE_ERROR; | |
420 | *value = result; | |
421 | return AE_OK; | |
422 | } | |
423 | break; | |
424 | default: | |
425 | return AE_BAD_ADDRESS; | |
426 | } | |
427 | return AE_OK; | |
428 | } | |
429 | ||
430 | static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface) | |
431 | { | |
432 | struct wmab_args args; | |
433 | ||
434 | args.eax = ACER_AMW0_WRITE; | |
435 | args.ebx = value ? (1<<8) : 0; | |
436 | args.ecx = args.edx = 0; | |
437 | ||
438 | switch (cap) { | |
439 | case ACER_CAP_MAILLED: | |
440 | if (value > 1) | |
441 | return AE_BAD_PARAMETER; | |
442 | args.ebx |= ACER_AMW0_MAILLED_MASK; | |
443 | break; | |
444 | case ACER_CAP_WIRELESS: | |
445 | if (value > 1) | |
446 | return AE_BAD_PARAMETER; | |
447 | args.ebx |= ACER_AMW0_WIRELESS_MASK; | |
448 | break; | |
449 | case ACER_CAP_BLUETOOTH: | |
450 | if (value > 1) | |
451 | return AE_BAD_PARAMETER; | |
452 | args.ebx |= ACER_AMW0_BLUETOOTH_MASK; | |
453 | break; | |
454 | case ACER_CAP_BRIGHTNESS: | |
455 | if (value > max_brightness) | |
456 | return AE_BAD_PARAMETER; | |
457 | switch (quirks->brightness) { | |
745a5d21 | 458 | default: |
4609d029 CC |
459 | return ec_write(0x83, value); |
460 | break; | |
745a5d21 CC |
461 | } |
462 | default: | |
463 | return AE_BAD_ADDRESS; | |
464 | } | |
465 | ||
466 | /* Actually do the set */ | |
467 | return wmab_execute(&args, NULL); | |
468 | } | |
469 | ||
470 | static acpi_status AMW0_find_mailled(void) | |
471 | { | |
472 | struct wmab_args args; | |
473 | struct wmab_ret ret; | |
474 | acpi_status status = AE_OK; | |
475 | struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; | |
476 | union acpi_object *obj; | |
477 | ||
478 | args.eax = 0x86; | |
479 | args.ebx = args.ecx = args.edx = 0; | |
480 | ||
481 | status = wmab_execute(&args, &out); | |
482 | if (ACPI_FAILURE(status)) | |
483 | return status; | |
484 | ||
485 | obj = (union acpi_object *) out.pointer; | |
486 | if (obj && obj->type == ACPI_TYPE_BUFFER && | |
487 | obj->buffer.length == sizeof(struct wmab_ret)) { | |
488 | ret = *((struct wmab_ret *) obj->buffer.pointer); | |
489 | } else { | |
490 | return AE_ERROR; | |
491 | } | |
492 | ||
493 | if (ret.eex & 0x1) | |
494 | interface->capability |= ACER_CAP_MAILLED; | |
495 | ||
496 | kfree(out.pointer); | |
497 | ||
498 | return AE_OK; | |
499 | } | |
500 | ||
501 | static acpi_status AMW0_set_capabilities(void) | |
502 | { | |
503 | struct wmab_args args; | |
504 | struct wmab_ret ret; | |
505 | acpi_status status = AE_OK; | |
506 | struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; | |
507 | union acpi_object *obj; | |
508 | ||
509 | args.eax = ACER_AMW0_WRITE; | |
510 | args.ecx = args.edx = 0; | |
511 | ||
512 | args.ebx = 0xa2 << 8; | |
513 | args.ebx |= ACER_AMW0_WIRELESS_MASK; | |
514 | ||
515 | status = wmab_execute(&args, &out); | |
516 | if (ACPI_FAILURE(status)) | |
517 | return status; | |
518 | ||
519 | obj = (union acpi_object *) out.pointer; | |
520 | if (obj && obj->type == ACPI_TYPE_BUFFER && | |
521 | obj->buffer.length == sizeof(struct wmab_ret)) { | |
522 | ret = *((struct wmab_ret *) obj->buffer.pointer); | |
523 | } else { | |
524 | return AE_ERROR; | |
525 | } | |
526 | ||
527 | if (ret.eax & 0x1) | |
528 | interface->capability |= ACER_CAP_WIRELESS; | |
529 | ||
530 | args.ebx = 2 << 8; | |
531 | args.ebx |= ACER_AMW0_BLUETOOTH_MASK; | |
532 | ||
533 | status = wmab_execute(&args, &out); | |
534 | if (ACPI_FAILURE(status)) | |
535 | return status; | |
536 | ||
537 | obj = (union acpi_object *) out.pointer; | |
538 | if (obj && obj->type == ACPI_TYPE_BUFFER | |
539 | && obj->buffer.length == sizeof(struct wmab_ret)) { | |
540 | ret = *((struct wmab_ret *) obj->buffer.pointer); | |
541 | } else { | |
542 | return AE_ERROR; | |
543 | } | |
544 | ||
545 | if (ret.eax & 0x1) | |
546 | interface->capability |= ACER_CAP_BLUETOOTH; | |
547 | ||
548 | kfree(out.pointer); | |
549 | ||
550 | /* | |
551 | * This appears to be safe to enable, since all Wistron based laptops | |
552 | * appear to use the same EC register for brightness, even if they | |
553 | * differ for wireless, etc | |
554 | */ | |
555 | interface->capability |= ACER_CAP_BRIGHTNESS; | |
556 | ||
557 | return AE_OK; | |
558 | } | |
559 | ||
560 | static struct wmi_interface AMW0_interface = { | |
561 | .type = ACER_AMW0, | |
562 | }; | |
563 | ||
564 | static struct wmi_interface AMW0_V2_interface = { | |
565 | .type = ACER_AMW0_V2, | |
566 | }; | |
567 | ||
568 | /* | |
569 | * New interface (The WMID interface) | |
570 | */ | |
571 | static acpi_status | |
572 | WMI_execute_u32(u32 method_id, u32 in, u32 *out) | |
573 | { | |
574 | struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) }; | |
575 | struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL }; | |
576 | union acpi_object *obj; | |
577 | u32 tmp; | |
578 | acpi_status status; | |
579 | ||
580 | status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result); | |
581 | ||
582 | if (ACPI_FAILURE(status)) | |
583 | return status; | |
584 | ||
585 | obj = (union acpi_object *) result.pointer; | |
586 | if (obj && obj->type == ACPI_TYPE_BUFFER && | |
587 | obj->buffer.length == sizeof(u32)) { | |
588 | tmp = *((u32 *) obj->buffer.pointer); | |
589 | } else { | |
590 | tmp = 0; | |
591 | } | |
592 | ||
593 | if (out) | |
594 | *out = tmp; | |
595 | ||
596 | kfree(result.pointer); | |
597 | ||
598 | return status; | |
599 | } | |
600 | ||
601 | static acpi_status WMID_get_u32(u32 *value, u32 cap, | |
602 | struct wmi_interface *iface) | |
603 | { | |
604 | acpi_status status; | |
605 | u8 tmp; | |
606 | u32 result, method_id = 0; | |
607 | ||
608 | switch (cap) { | |
609 | case ACER_CAP_WIRELESS: | |
610 | method_id = ACER_WMID_GET_WIRELESS_METHODID; | |
611 | break; | |
612 | case ACER_CAP_BLUETOOTH: | |
613 | method_id = ACER_WMID_GET_BLUETOOTH_METHODID; | |
614 | break; | |
615 | case ACER_CAP_BRIGHTNESS: | |
616 | method_id = ACER_WMID_GET_BRIGHTNESS_METHODID; | |
617 | break; | |
618 | case ACER_CAP_THREEG: | |
619 | method_id = ACER_WMID_GET_THREEG_METHODID; | |
620 | break; | |
621 | case ACER_CAP_MAILLED: | |
622 | if (quirks->mailled == 1) { | |
623 | ec_read(0x9f, &tmp); | |
624 | *value = tmp & 0x1; | |
625 | return 0; | |
626 | } | |
627 | default: | |
628 | return AE_BAD_ADDRESS; | |
629 | } | |
630 | status = WMI_execute_u32(method_id, 0, &result); | |
631 | ||
632 | if (ACPI_SUCCESS(status)) | |
633 | *value = (u8)result; | |
634 | ||
635 | return status; | |
636 | } | |
637 | ||
638 | static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface) | |
639 | { | |
640 | u32 method_id = 0; | |
641 | char param; | |
642 | ||
643 | switch (cap) { | |
644 | case ACER_CAP_BRIGHTNESS: | |
645 | if (value > max_brightness) | |
646 | return AE_BAD_PARAMETER; | |
647 | method_id = ACER_WMID_SET_BRIGHTNESS_METHODID; | |
648 | break; | |
649 | case ACER_CAP_WIRELESS: | |
650 | if (value > 1) | |
651 | return AE_BAD_PARAMETER; | |
652 | method_id = ACER_WMID_SET_WIRELESS_METHODID; | |
653 | break; | |
654 | case ACER_CAP_BLUETOOTH: | |
655 | if (value > 1) | |
656 | return AE_BAD_PARAMETER; | |
657 | method_id = ACER_WMID_SET_BLUETOOTH_METHODID; | |
658 | break; | |
659 | case ACER_CAP_THREEG: | |
660 | if (value > 1) | |
661 | return AE_BAD_PARAMETER; | |
662 | method_id = ACER_WMID_SET_THREEG_METHODID; | |
663 | break; | |
664 | case ACER_CAP_MAILLED: | |
665 | if (value > 1) | |
666 | return AE_BAD_PARAMETER; | |
667 | if (quirks->mailled == 1) { | |
668 | param = value ? 0x92 : 0x93; | |
669 | i8042_command(¶m, 0x1059); | |
670 | return 0; | |
671 | } | |
672 | break; | |
673 | default: | |
674 | return AE_BAD_ADDRESS; | |
675 | } | |
676 | return WMI_execute_u32(method_id, (u32)value, NULL); | |
677 | } | |
678 | ||
679 | static acpi_status WMID_set_capabilities(void) | |
680 | { | |
681 | struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; | |
682 | union acpi_object *obj; | |
683 | acpi_status status; | |
684 | u32 devices; | |
685 | ||
686 | status = wmi_query_block(WMID_GUID2, 1, &out); | |
687 | if (ACPI_FAILURE(status)) | |
688 | return status; | |
689 | ||
690 | obj = (union acpi_object *) out.pointer; | |
691 | if (obj && obj->type == ACPI_TYPE_BUFFER && | |
692 | obj->buffer.length == sizeof(u32)) { | |
693 | devices = *((u32 *) obj->buffer.pointer); | |
694 | } else { | |
695 | return AE_ERROR; | |
696 | } | |
697 | ||
698 | /* Not sure on the meaning of the relevant bits yet to detect these */ | |
699 | interface->capability |= ACER_CAP_WIRELESS; | |
700 | interface->capability |= ACER_CAP_THREEG; | |
701 | ||
702 | /* WMID always provides brightness methods */ | |
703 | interface->capability |= ACER_CAP_BRIGHTNESS; | |
704 | ||
705 | if (devices & 0x10) | |
706 | interface->capability |= ACER_CAP_BLUETOOTH; | |
707 | ||
708 | if (!(devices & 0x20)) | |
709 | max_brightness = 0x9; | |
710 | ||
711 | return status; | |
712 | } | |
713 | ||
714 | static struct wmi_interface wmid_interface = { | |
715 | .type = ACER_WMID, | |
716 | }; | |
717 | ||
718 | /* | |
719 | * Generic Device (interface-independent) | |
720 | */ | |
721 | ||
722 | static acpi_status get_u32(u32 *value, u32 cap) | |
723 | { | |
724 | acpi_status status = AE_BAD_ADDRESS; | |
725 | ||
726 | switch (interface->type) { | |
727 | case ACER_AMW0: | |
728 | status = AMW0_get_u32(value, cap, interface); | |
729 | break; | |
730 | case ACER_AMW0_V2: | |
731 | if (cap == ACER_CAP_MAILLED) { | |
732 | status = AMW0_get_u32(value, cap, interface); | |
733 | break; | |
734 | } | |
735 | case ACER_WMID: | |
736 | status = WMID_get_u32(value, cap, interface); | |
737 | break; | |
738 | } | |
739 | ||
740 | return status; | |
741 | } | |
742 | ||
743 | static acpi_status set_u32(u32 value, u32 cap) | |
744 | { | |
745 | if (interface->capability & cap) { | |
746 | switch (interface->type) { | |
747 | case ACER_AMW0: | |
748 | return AMW0_set_u32(value, cap, interface); | |
749 | case ACER_AMW0_V2: | |
750 | case ACER_WMID: | |
751 | return WMID_set_u32(value, cap, interface); | |
752 | default: | |
753 | return AE_BAD_PARAMETER; | |
754 | } | |
755 | } | |
756 | return AE_BAD_PARAMETER; | |
757 | } | |
758 | ||
759 | static void __init acer_commandline_init(void) | |
760 | { | |
761 | /* | |
762 | * These will all fail silently if the value given is invalid, or the | |
763 | * capability isn't available on the given interface | |
764 | */ | |
765 | set_u32(mailled, ACER_CAP_MAILLED); | |
766 | set_u32(wireless, ACER_CAP_WIRELESS); | |
767 | set_u32(bluetooth, ACER_CAP_BLUETOOTH); | |
768 | set_u32(threeg, ACER_CAP_THREEG); | |
769 | set_u32(brightness, ACER_CAP_BRIGHTNESS); | |
770 | } | |
771 | ||
772 | /* | |
773 | * LED device (Mail LED only, no other LEDs known yet) | |
774 | */ | |
775 | static void mail_led_set(struct led_classdev *led_cdev, | |
776 | enum led_brightness value) | |
777 | { | |
778 | set_u32(value, ACER_CAP_MAILLED); | |
779 | } | |
780 | ||
781 | static struct led_classdev mail_led = { | |
343c0042 | 782 | .name = "acer-wmi::mail", |
745a5d21 CC |
783 | .brightness_set = mail_led_set, |
784 | }; | |
785 | ||
7560e385 | 786 | static int __devinit acer_led_init(struct device *dev) |
745a5d21 CC |
787 | { |
788 | return led_classdev_register(dev, &mail_led); | |
789 | } | |
790 | ||
791 | static void acer_led_exit(void) | |
792 | { | |
793 | led_classdev_unregister(&mail_led); | |
794 | } | |
795 | ||
796 | /* | |
797 | * Backlight device | |
798 | */ | |
799 | static struct backlight_device *acer_backlight_device; | |
800 | ||
801 | static int read_brightness(struct backlight_device *bd) | |
802 | { | |
803 | u32 value; | |
804 | get_u32(&value, ACER_CAP_BRIGHTNESS); | |
805 | return value; | |
806 | } | |
807 | ||
808 | static int update_bl_status(struct backlight_device *bd) | |
809 | { | |
810 | set_u32(bd->props.brightness, ACER_CAP_BRIGHTNESS); | |
811 | return 0; | |
812 | } | |
813 | ||
814 | static struct backlight_ops acer_bl_ops = { | |
815 | .get_brightness = read_brightness, | |
816 | .update_status = update_bl_status, | |
817 | }; | |
818 | ||
7560e385 | 819 | static int __devinit acer_backlight_init(struct device *dev) |
745a5d21 CC |
820 | { |
821 | struct backlight_device *bd; | |
822 | ||
823 | bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops); | |
824 | if (IS_ERR(bd)) { | |
825 | printk(ACER_ERR "Could not register Acer backlight device\n"); | |
826 | acer_backlight_device = NULL; | |
827 | return PTR_ERR(bd); | |
828 | } | |
829 | ||
830 | acer_backlight_device = bd; | |
831 | ||
832 | bd->props.max_brightness = max_brightness; | |
833 | bd->props.brightness = read_brightness(NULL); | |
834 | backlight_update_status(bd); | |
835 | return 0; | |
836 | } | |
837 | ||
7560e385 | 838 | static void acer_backlight_exit(void) |
745a5d21 CC |
839 | { |
840 | backlight_device_unregister(acer_backlight_device); | |
841 | } | |
842 | ||
843 | /* | |
844 | * Read/ write bool sysfs macro | |
845 | */ | |
846 | #define show_set_bool(value, cap) \ | |
847 | static ssize_t \ | |
848 | show_bool_##value(struct device *dev, struct device_attribute *attr, \ | |
849 | char *buf) \ | |
850 | { \ | |
851 | u32 result; \ | |
852 | acpi_status status = get_u32(&result, cap); \ | |
853 | if (ACPI_SUCCESS(status)) \ | |
854 | return sprintf(buf, "%u\n", result); \ | |
855 | return sprintf(buf, "Read error\n"); \ | |
856 | } \ | |
857 | \ | |
858 | static ssize_t \ | |
859 | set_bool_##value(struct device *dev, struct device_attribute *attr, \ | |
860 | const char *buf, size_t count) \ | |
861 | { \ | |
862 | u32 tmp = simple_strtoul(buf, NULL, 10); \ | |
863 | acpi_status status = set_u32(tmp, cap); \ | |
864 | if (ACPI_FAILURE(status)) \ | |
865 | return -EINVAL; \ | |
866 | return count; \ | |
867 | } \ | |
868 | static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \ | |
869 | show_bool_##value, set_bool_##value); | |
870 | ||
871 | show_set_bool(wireless, ACER_CAP_WIRELESS); | |
872 | show_set_bool(bluetooth, ACER_CAP_BLUETOOTH); | |
873 | show_set_bool(threeg, ACER_CAP_THREEG); | |
874 | ||
875 | /* | |
876 | * Read interface sysfs macro | |
877 | */ | |
878 | static ssize_t show_interface(struct device *dev, struct device_attribute *attr, | |
879 | char *buf) | |
880 | { | |
881 | switch (interface->type) { | |
882 | case ACER_AMW0: | |
883 | return sprintf(buf, "AMW0\n"); | |
884 | case ACER_AMW0_V2: | |
885 | return sprintf(buf, "AMW0 v2\n"); | |
886 | case ACER_WMID: | |
887 | return sprintf(buf, "WMID\n"); | |
888 | default: | |
889 | return sprintf(buf, "Error!\n"); | |
890 | } | |
891 | } | |
892 | ||
893 | static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR, | |
894 | show_interface, NULL); | |
895 | ||
896 | /* | |
897 | * Platform device | |
898 | */ | |
899 | static int __devinit acer_platform_probe(struct platform_device *device) | |
900 | { | |
901 | int err; | |
902 | ||
903 | if (has_cap(ACER_CAP_MAILLED)) { | |
904 | err = acer_led_init(&device->dev); | |
905 | if (err) | |
906 | goto error_mailled; | |
907 | } | |
908 | ||
909 | if (has_cap(ACER_CAP_BRIGHTNESS)) { | |
910 | err = acer_backlight_init(&device->dev); | |
911 | if (err) | |
912 | goto error_brightness; | |
913 | } | |
914 | ||
915 | return 0; | |
916 | ||
917 | error_brightness: | |
918 | acer_led_exit(); | |
919 | error_mailled: | |
920 | return err; | |
921 | } | |
922 | ||
923 | static int acer_platform_remove(struct platform_device *device) | |
924 | { | |
925 | if (has_cap(ACER_CAP_MAILLED)) | |
926 | acer_led_exit(); | |
927 | if (has_cap(ACER_CAP_BRIGHTNESS)) | |
928 | acer_backlight_exit(); | |
929 | return 0; | |
930 | } | |
931 | ||
932 | static int acer_platform_suspend(struct platform_device *dev, | |
933 | pm_message_t state) | |
934 | { | |
935 | u32 value; | |
936 | struct acer_data *data = &interface->data; | |
937 | ||
938 | if (!data) | |
939 | return -ENOMEM; | |
940 | ||
941 | if (has_cap(ACER_CAP_WIRELESS)) { | |
942 | get_u32(&value, ACER_CAP_WIRELESS); | |
943 | data->wireless = value; | |
944 | } | |
945 | ||
946 | if (has_cap(ACER_CAP_BLUETOOTH)) { | |
947 | get_u32(&value, ACER_CAP_BLUETOOTH); | |
948 | data->bluetooth = value; | |
949 | } | |
950 | ||
951 | if (has_cap(ACER_CAP_MAILLED)) { | |
952 | get_u32(&value, ACER_CAP_MAILLED); | |
953 | data->mailled = value; | |
954 | } | |
955 | ||
956 | if (has_cap(ACER_CAP_BRIGHTNESS)) { | |
957 | get_u32(&value, ACER_CAP_BRIGHTNESS); | |
958 | data->brightness = value; | |
959 | } | |
960 | ||
961 | return 0; | |
962 | } | |
963 | ||
964 | static int acer_platform_resume(struct platform_device *device) | |
965 | { | |
966 | struct acer_data *data = &interface->data; | |
967 | ||
968 | if (!data) | |
969 | return -ENOMEM; | |
970 | ||
971 | if (has_cap(ACER_CAP_WIRELESS)) | |
972 | set_u32(data->wireless, ACER_CAP_WIRELESS); | |
973 | ||
974 | if (has_cap(ACER_CAP_BLUETOOTH)) | |
975 | set_u32(data->bluetooth, ACER_CAP_BLUETOOTH); | |
976 | ||
977 | if (has_cap(ACER_CAP_THREEG)) | |
978 | set_u32(data->threeg, ACER_CAP_THREEG); | |
979 | ||
980 | if (has_cap(ACER_CAP_MAILLED)) | |
981 | set_u32(data->mailled, ACER_CAP_MAILLED); | |
982 | ||
983 | if (has_cap(ACER_CAP_BRIGHTNESS)) | |
984 | set_u32(data->brightness, ACER_CAP_BRIGHTNESS); | |
985 | ||
986 | return 0; | |
987 | } | |
988 | ||
989 | static struct platform_driver acer_platform_driver = { | |
990 | .driver = { | |
991 | .name = "acer-wmi", | |
992 | .owner = THIS_MODULE, | |
993 | }, | |
994 | .probe = acer_platform_probe, | |
995 | .remove = acer_platform_remove, | |
996 | .suspend = acer_platform_suspend, | |
997 | .resume = acer_platform_resume, | |
998 | }; | |
999 | ||
1000 | static struct platform_device *acer_platform_device; | |
1001 | ||
1002 | static int remove_sysfs(struct platform_device *device) | |
1003 | { | |
1004 | if (has_cap(ACER_CAP_WIRELESS)) | |
1005 | device_remove_file(&device->dev, &dev_attr_wireless); | |
1006 | ||
1007 | if (has_cap(ACER_CAP_BLUETOOTH)) | |
1008 | device_remove_file(&device->dev, &dev_attr_bluetooth); | |
1009 | ||
1010 | if (has_cap(ACER_CAP_THREEG)) | |
1011 | device_remove_file(&device->dev, &dev_attr_threeg); | |
1012 | ||
1013 | device_remove_file(&device->dev, &dev_attr_interface); | |
1014 | ||
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | static int create_sysfs(void) | |
1019 | { | |
1020 | int retval = -ENOMEM; | |
1021 | ||
1022 | if (has_cap(ACER_CAP_WIRELESS)) { | |
1023 | retval = device_create_file(&acer_platform_device->dev, | |
1024 | &dev_attr_wireless); | |
1025 | if (retval) | |
1026 | goto error_sysfs; | |
1027 | } | |
1028 | ||
1029 | if (has_cap(ACER_CAP_BLUETOOTH)) { | |
1030 | retval = device_create_file(&acer_platform_device->dev, | |
1031 | &dev_attr_bluetooth); | |
1032 | if (retval) | |
1033 | goto error_sysfs; | |
1034 | } | |
1035 | ||
1036 | if (has_cap(ACER_CAP_THREEG)) { | |
1037 | retval = device_create_file(&acer_platform_device->dev, | |
1038 | &dev_attr_threeg); | |
1039 | if (retval) | |
1040 | goto error_sysfs; | |
1041 | } | |
1042 | ||
1043 | retval = device_create_file(&acer_platform_device->dev, | |
1044 | &dev_attr_interface); | |
1045 | if (retval) | |
1046 | goto error_sysfs; | |
1047 | ||
1048 | return 0; | |
1049 | ||
1050 | error_sysfs: | |
1051 | remove_sysfs(acer_platform_device); | |
1052 | return retval; | |
1053 | } | |
1054 | ||
1055 | static int __init acer_wmi_init(void) | |
1056 | { | |
1057 | int err; | |
1058 | ||
1059 | printk(ACER_INFO "Acer Laptop ACPI-WMI Extras version %s\n", | |
1060 | ACER_WMI_VERSION); | |
1061 | ||
1062 | /* | |
1063 | * Detect which ACPI-WMI interface we're using. | |
1064 | */ | |
1065 | if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) | |
1066 | interface = &AMW0_V2_interface; | |
1067 | ||
1068 | if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) | |
1069 | interface = &wmid_interface; | |
1070 | ||
1071 | if (wmi_has_guid(WMID_GUID2) && interface) { | |
1072 | if (ACPI_FAILURE(WMID_set_capabilities())) { | |
8d039bc7 CC |
1073 | printk(ACER_ERR "Unable to detect available WMID " |
1074 | "devices\n"); | |
745a5d21 CC |
1075 | return -ENODEV; |
1076 | } | |
1077 | } else if (!wmi_has_guid(WMID_GUID2) && interface) { | |
8d039bc7 | 1078 | printk(ACER_ERR "No WMID device detection method found\n"); |
745a5d21 CC |
1079 | return -ENODEV; |
1080 | } | |
1081 | ||
1082 | if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) { | |
1083 | interface = &AMW0_interface; | |
1084 | ||
1085 | if (ACPI_FAILURE(AMW0_set_capabilities())) { | |
8d039bc7 CC |
1086 | printk(ACER_ERR "Unable to detect available AMW0 " |
1087 | "devices\n"); | |
745a5d21 CC |
1088 | return -ENODEV; |
1089 | } | |
1090 | } | |
1091 | ||
9b963c40 CC |
1092 | if (wmi_has_guid(AMW0_GUID1)) |
1093 | AMW0_find_mailled(); | |
745a5d21 CC |
1094 | |
1095 | find_quirks(); | |
1096 | ||
1097 | if (!interface) { | |
8d039bc7 CC |
1098 | printk(ACER_ERR "No or unsupported WMI interface, unable to " |
1099 | "load\n"); | |
745a5d21 CC |
1100 | return -ENODEV; |
1101 | } | |
1102 | ||
1103 | if (platform_driver_register(&acer_platform_driver)) { | |
1104 | printk(ACER_ERR "Unable to register platform driver.\n"); | |
1105 | goto error_platform_register; | |
1106 | } | |
1107 | acer_platform_device = platform_device_alloc("acer-wmi", -1); | |
1108 | platform_device_add(acer_platform_device); | |
1109 | ||
1110 | err = create_sysfs(); | |
1111 | if (err) | |
1112 | return err; | |
1113 | ||
1114 | /* Override any initial settings with values from the commandline */ | |
1115 | acer_commandline_init(); | |
1116 | ||
1117 | return 0; | |
1118 | ||
1119 | error_platform_register: | |
1120 | return -ENODEV; | |
1121 | } | |
1122 | ||
1123 | static void __exit acer_wmi_exit(void) | |
1124 | { | |
1125 | remove_sysfs(acer_platform_device); | |
1126 | platform_device_del(acer_platform_device); | |
1127 | platform_driver_unregister(&acer_platform_driver); | |
1128 | ||
1129 | printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n"); | |
1130 | return; | |
1131 | } | |
1132 | ||
1133 | module_init(acer_wmi_init); | |
1134 | module_exit(acer_wmi_exit); |