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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 | ||
745a5d21 CC |
25 | #include <linux/kernel.h> |
26 | #include <linux/module.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/types.h> | |
29 | #include <linux/dmi.h> | |
f2b585b4 | 30 | #include <linux/fb.h> |
745a5d21 CC |
31 | #include <linux/backlight.h> |
32 | #include <linux/leds.h> | |
33 | #include <linux/platform_device.h> | |
34 | #include <linux/acpi.h> | |
35 | #include <linux/i8042.h> | |
81143522 | 36 | #include <linux/debugfs.h> |
745a5d21 CC |
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" | |
5753dd53 | 90 | #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C" |
745a5d21 CC |
91 | #define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3" |
92 | #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A" | |
93 | ||
94 | MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB"); | |
95 | MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"); | |
96 | ||
97 | /* Temporary workaround until the WMI sysfs interface goes in */ | |
98 | MODULE_ALIAS("dmi:*:*Acer*:*:"); | |
99 | ||
100 | /* | |
101 | * Interface capability flags | |
102 | */ | |
103 | #define ACER_CAP_MAILLED (1<<0) | |
104 | #define ACER_CAP_WIRELESS (1<<1) | |
105 | #define ACER_CAP_BLUETOOTH (1<<2) | |
106 | #define ACER_CAP_BRIGHTNESS (1<<3) | |
107 | #define ACER_CAP_THREEG (1<<4) | |
108 | #define ACER_CAP_ANY (0xFFFFFFFF) | |
109 | ||
110 | /* | |
111 | * Interface type flags | |
112 | */ | |
113 | enum interface_flags { | |
114 | ACER_AMW0, | |
115 | ACER_AMW0_V2, | |
116 | ACER_WMID, | |
117 | }; | |
118 | ||
119 | #define ACER_DEFAULT_WIRELESS 0 | |
120 | #define ACER_DEFAULT_BLUETOOTH 0 | |
121 | #define ACER_DEFAULT_MAILLED 0 | |
122 | #define ACER_DEFAULT_THREEG 0 | |
123 | ||
124 | static int max_brightness = 0xF; | |
125 | ||
126 | static int wireless = -1; | |
127 | static int bluetooth = -1; | |
128 | static int mailled = -1; | |
129 | static int brightness = -1; | |
130 | static int threeg = -1; | |
131 | static int force_series; | |
132 | ||
133 | module_param(mailled, int, 0444); | |
134 | module_param(wireless, int, 0444); | |
135 | module_param(bluetooth, int, 0444); | |
136 | module_param(brightness, int, 0444); | |
137 | module_param(threeg, int, 0444); | |
138 | module_param(force_series, int, 0444); | |
139 | MODULE_PARM_DESC(wireless, "Set initial state of Wireless hardware"); | |
140 | MODULE_PARM_DESC(bluetooth, "Set initial state of Bluetooth hardware"); | |
141 | MODULE_PARM_DESC(mailled, "Set initial state of Mail LED"); | |
142 | MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness"); | |
143 | MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware"); | |
144 | MODULE_PARM_DESC(force_series, "Force a different laptop series"); | |
145 | ||
146 | struct acer_data { | |
147 | int mailled; | |
148 | int wireless; | |
149 | int bluetooth; | |
150 | int threeg; | |
151 | int brightness; | |
152 | }; | |
153 | ||
81143522 CC |
154 | struct acer_debug { |
155 | struct dentry *root; | |
156 | struct dentry *devices; | |
157 | u32 wmid_devices; | |
158 | }; | |
159 | ||
745a5d21 CC |
160 | /* Each low-level interface must define at least some of the following */ |
161 | struct wmi_interface { | |
162 | /* The WMI device type */ | |
163 | u32 type; | |
164 | ||
165 | /* The capabilities this interface provides */ | |
166 | u32 capability; | |
167 | ||
168 | /* Private data for the current interface */ | |
169 | struct acer_data data; | |
81143522 CC |
170 | |
171 | /* debugfs entries associated with this interface */ | |
172 | struct acer_debug debug; | |
745a5d21 CC |
173 | }; |
174 | ||
175 | /* The static interface pointer, points to the currently detected interface */ | |
176 | static struct wmi_interface *interface; | |
177 | ||
178 | /* | |
179 | * Embedded Controller quirks | |
180 | * Some laptops require us to directly access the EC to either enable or query | |
181 | * features that are not available through WMI. | |
182 | */ | |
183 | ||
184 | struct quirk_entry { | |
185 | u8 wireless; | |
186 | u8 mailled; | |
9991d9f2 | 187 | s8 brightness; |
745a5d21 CC |
188 | u8 bluetooth; |
189 | }; | |
190 | ||
191 | static struct quirk_entry *quirks; | |
192 | ||
193 | static void set_quirks(void) | |
194 | { | |
83097aca AV |
195 | if (!interface) |
196 | return; | |
197 | ||
745a5d21 CC |
198 | if (quirks->mailled) |
199 | interface->capability |= ACER_CAP_MAILLED; | |
200 | ||
201 | if (quirks->brightness) | |
202 | interface->capability |= ACER_CAP_BRIGHTNESS; | |
203 | } | |
204 | ||
205 | static int dmi_matched(const struct dmi_system_id *dmi) | |
206 | { | |
207 | quirks = dmi->driver_data; | |
208 | return 0; | |
209 | } | |
210 | ||
211 | static struct quirk_entry quirk_unknown = { | |
212 | }; | |
213 | ||
9991d9f2 CC |
214 | static struct quirk_entry quirk_acer_aspire_1520 = { |
215 | .brightness = -1, | |
216 | }; | |
217 | ||
745a5d21 CC |
218 | static struct quirk_entry quirk_acer_travelmate_2490 = { |
219 | .mailled = 1, | |
220 | }; | |
221 | ||
222 | /* This AMW0 laptop has no bluetooth */ | |
223 | static struct quirk_entry quirk_medion_md_98300 = { | |
224 | .wireless = 1, | |
225 | }; | |
226 | ||
6f061ab5 CC |
227 | static struct quirk_entry quirk_fujitsu_amilo_li_1718 = { |
228 | .wireless = 2, | |
229 | }; | |
230 | ||
745a5d21 | 231 | static struct dmi_system_id acer_quirks[] = { |
9991d9f2 CC |
232 | { |
233 | .callback = dmi_matched, | |
234 | .ident = "Acer Aspire 1360", | |
235 | .matches = { | |
236 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
237 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"), | |
238 | }, | |
239 | .driver_data = &quirk_acer_aspire_1520, | |
240 | }, | |
241 | { | |
242 | .callback = dmi_matched, | |
243 | .ident = "Acer Aspire 1520", | |
244 | .matches = { | |
245 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
246 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"), | |
247 | }, | |
248 | .driver_data = &quirk_acer_aspire_1520, | |
249 | }, | |
745a5d21 CC |
250 | { |
251 | .callback = dmi_matched, | |
252 | .ident = "Acer Aspire 3100", | |
253 | .matches = { | |
254 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
255 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"), | |
256 | }, | |
257 | .driver_data = &quirk_acer_travelmate_2490, | |
258 | }, | |
ed9cfe98 CC |
259 | { |
260 | .callback = dmi_matched, | |
261 | .ident = "Acer Aspire 3610", | |
262 | .matches = { | |
263 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
264 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"), | |
265 | }, | |
266 | .driver_data = &quirk_acer_travelmate_2490, | |
267 | }, | |
745a5d21 CC |
268 | { |
269 | .callback = dmi_matched, | |
270 | .ident = "Acer Aspire 5100", | |
271 | .matches = { | |
272 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
273 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"), | |
274 | }, | |
275 | .driver_data = &quirk_acer_travelmate_2490, | |
276 | }, | |
ed9cfe98 CC |
277 | { |
278 | .callback = dmi_matched, | |
279 | .ident = "Acer Aspire 5610", | |
280 | .matches = { | |
281 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
282 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"), | |
283 | }, | |
284 | .driver_data = &quirk_acer_travelmate_2490, | |
285 | }, | |
745a5d21 CC |
286 | { |
287 | .callback = dmi_matched, | |
288 | .ident = "Acer Aspire 5630", | |
289 | .matches = { | |
290 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
291 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"), | |
292 | }, | |
293 | .driver_data = &quirk_acer_travelmate_2490, | |
294 | }, | |
295 | { | |
296 | .callback = dmi_matched, | |
297 | .ident = "Acer Aspire 5650", | |
298 | .matches = { | |
299 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
300 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"), | |
301 | }, | |
302 | .driver_data = &quirk_acer_travelmate_2490, | |
303 | }, | |
304 | { | |
305 | .callback = dmi_matched, | |
306 | .ident = "Acer Aspire 5680", | |
307 | .matches = { | |
308 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
309 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"), | |
310 | }, | |
311 | .driver_data = &quirk_acer_travelmate_2490, | |
312 | }, | |
313 | { | |
314 | .callback = dmi_matched, | |
315 | .ident = "Acer Aspire 9110", | |
316 | .matches = { | |
317 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
318 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"), | |
319 | }, | |
320 | .driver_data = &quirk_acer_travelmate_2490, | |
321 | }, | |
322 | { | |
323 | .callback = dmi_matched, | |
324 | .ident = "Acer TravelMate 2490", | |
325 | .matches = { | |
326 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
327 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"), | |
328 | }, | |
329 | .driver_data = &quirk_acer_travelmate_2490, | |
330 | }, | |
262ee35b CC |
331 | { |
332 | .callback = dmi_matched, | |
333 | .ident = "Acer TravelMate 4200", | |
334 | .matches = { | |
335 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
336 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"), | |
337 | }, | |
338 | .driver_data = &quirk_acer_travelmate_2490, | |
339 | }, | |
6f061ab5 CC |
340 | { |
341 | .callback = dmi_matched, | |
342 | .ident = "Fujitsu Siemens Amilo Li 1718", | |
343 | .matches = { | |
344 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
345 | DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"), | |
346 | }, | |
347 | .driver_data = &quirk_fujitsu_amilo_li_1718, | |
348 | }, | |
745a5d21 CC |
349 | { |
350 | .callback = dmi_matched, | |
351 | .ident = "Medion MD 98300", | |
352 | .matches = { | |
353 | DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), | |
354 | DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"), | |
355 | }, | |
356 | .driver_data = &quirk_medion_md_98300, | |
357 | }, | |
358 | {} | |
359 | }; | |
360 | ||
361 | /* Find which quirks are needed for a particular vendor/ model pair */ | |
362 | static void find_quirks(void) | |
363 | { | |
364 | if (!force_series) { | |
365 | dmi_check_system(acer_quirks); | |
366 | } else if (force_series == 2490) { | |
367 | quirks = &quirk_acer_travelmate_2490; | |
368 | } | |
369 | ||
370 | if (quirks == NULL) | |
371 | quirks = &quirk_unknown; | |
372 | ||
373 | set_quirks(); | |
374 | } | |
375 | ||
376 | /* | |
377 | * General interface convenience methods | |
378 | */ | |
379 | ||
380 | static bool has_cap(u32 cap) | |
381 | { | |
382 | if ((interface->capability & cap) != 0) | |
383 | return 1; | |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
388 | /* | |
389 | * AMW0 (V1) interface | |
390 | */ | |
391 | struct wmab_args { | |
392 | u32 eax; | |
393 | u32 ebx; | |
394 | u32 ecx; | |
395 | u32 edx; | |
396 | }; | |
397 | ||
398 | struct wmab_ret { | |
399 | u32 eax; | |
400 | u32 ebx; | |
401 | u32 ecx; | |
402 | u32 edx; | |
403 | u32 eex; | |
404 | }; | |
405 | ||
406 | static acpi_status wmab_execute(struct wmab_args *regbuf, | |
407 | struct acpi_buffer *result) | |
408 | { | |
409 | struct acpi_buffer input; | |
410 | acpi_status status; | |
411 | input.length = sizeof(struct wmab_args); | |
412 | input.pointer = (u8 *)regbuf; | |
413 | ||
414 | status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result); | |
415 | ||
416 | return status; | |
417 | } | |
418 | ||
419 | static acpi_status AMW0_get_u32(u32 *value, u32 cap, | |
420 | struct wmi_interface *iface) | |
421 | { | |
422 | int err; | |
423 | u8 result; | |
424 | ||
425 | switch (cap) { | |
426 | case ACER_CAP_MAILLED: | |
427 | switch (quirks->mailled) { | |
428 | default: | |
429 | err = ec_read(0xA, &result); | |
430 | if (err) | |
431 | return AE_ERROR; | |
432 | *value = (result >> 7) & 0x1; | |
433 | return AE_OK; | |
434 | } | |
435 | break; | |
436 | case ACER_CAP_WIRELESS: | |
437 | switch (quirks->wireless) { | |
438 | case 1: | |
439 | err = ec_read(0x7B, &result); | |
440 | if (err) | |
441 | return AE_ERROR; | |
442 | *value = result & 0x1; | |
443 | return AE_OK; | |
6f061ab5 CC |
444 | case 2: |
445 | err = ec_read(0x71, &result); | |
446 | if (err) | |
447 | return AE_ERROR; | |
448 | *value = result & 0x1; | |
449 | return AE_OK; | |
745a5d21 CC |
450 | default: |
451 | err = ec_read(0xA, &result); | |
452 | if (err) | |
453 | return AE_ERROR; | |
454 | *value = (result >> 2) & 0x1; | |
455 | return AE_OK; | |
456 | } | |
457 | break; | |
458 | case ACER_CAP_BLUETOOTH: | |
459 | switch (quirks->bluetooth) { | |
460 | default: | |
461 | err = ec_read(0xA, &result); | |
462 | if (err) | |
463 | return AE_ERROR; | |
464 | *value = (result >> 4) & 0x1; | |
465 | return AE_OK; | |
466 | } | |
467 | break; | |
468 | case ACER_CAP_BRIGHTNESS: | |
469 | switch (quirks->brightness) { | |
470 | default: | |
471 | err = ec_read(0x83, &result); | |
472 | if (err) | |
473 | return AE_ERROR; | |
474 | *value = result; | |
475 | return AE_OK; | |
476 | } | |
477 | break; | |
478 | default: | |
479 | return AE_BAD_ADDRESS; | |
480 | } | |
481 | return AE_OK; | |
482 | } | |
483 | ||
484 | static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface) | |
485 | { | |
486 | struct wmab_args args; | |
487 | ||
488 | args.eax = ACER_AMW0_WRITE; | |
489 | args.ebx = value ? (1<<8) : 0; | |
490 | args.ecx = args.edx = 0; | |
491 | ||
492 | switch (cap) { | |
493 | case ACER_CAP_MAILLED: | |
494 | if (value > 1) | |
495 | return AE_BAD_PARAMETER; | |
496 | args.ebx |= ACER_AMW0_MAILLED_MASK; | |
497 | break; | |
498 | case ACER_CAP_WIRELESS: | |
499 | if (value > 1) | |
500 | return AE_BAD_PARAMETER; | |
501 | args.ebx |= ACER_AMW0_WIRELESS_MASK; | |
502 | break; | |
503 | case ACER_CAP_BLUETOOTH: | |
504 | if (value > 1) | |
505 | return AE_BAD_PARAMETER; | |
506 | args.ebx |= ACER_AMW0_BLUETOOTH_MASK; | |
507 | break; | |
508 | case ACER_CAP_BRIGHTNESS: | |
509 | if (value > max_brightness) | |
510 | return AE_BAD_PARAMETER; | |
511 | switch (quirks->brightness) { | |
745a5d21 | 512 | default: |
4609d029 CC |
513 | return ec_write(0x83, value); |
514 | break; | |
745a5d21 CC |
515 | } |
516 | default: | |
517 | return AE_BAD_ADDRESS; | |
518 | } | |
519 | ||
520 | /* Actually do the set */ | |
521 | return wmab_execute(&args, NULL); | |
522 | } | |
523 | ||
524 | static acpi_status AMW0_find_mailled(void) | |
525 | { | |
526 | struct wmab_args args; | |
527 | struct wmab_ret ret; | |
528 | acpi_status status = AE_OK; | |
529 | struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; | |
530 | union acpi_object *obj; | |
531 | ||
532 | args.eax = 0x86; | |
533 | args.ebx = args.ecx = args.edx = 0; | |
534 | ||
535 | status = wmab_execute(&args, &out); | |
536 | if (ACPI_FAILURE(status)) | |
537 | return status; | |
538 | ||
539 | obj = (union acpi_object *) out.pointer; | |
540 | if (obj && obj->type == ACPI_TYPE_BUFFER && | |
541 | obj->buffer.length == sizeof(struct wmab_ret)) { | |
542 | ret = *((struct wmab_ret *) obj->buffer.pointer); | |
543 | } else { | |
544 | return AE_ERROR; | |
545 | } | |
546 | ||
547 | if (ret.eex & 0x1) | |
548 | interface->capability |= ACER_CAP_MAILLED; | |
549 | ||
550 | kfree(out.pointer); | |
551 | ||
552 | return AE_OK; | |
553 | } | |
554 | ||
555 | static acpi_status AMW0_set_capabilities(void) | |
556 | { | |
557 | struct wmab_args args; | |
558 | struct wmab_ret ret; | |
559 | acpi_status status = AE_OK; | |
560 | struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; | |
561 | union acpi_object *obj; | |
562 | ||
5753dd53 CC |
563 | /* |
564 | * On laptops with this strange GUID (non Acer), normal probing doesn't | |
565 | * work. | |
566 | */ | |
567 | if (wmi_has_guid(AMW0_GUID2)) { | |
568 | interface->capability |= ACER_CAP_WIRELESS; | |
569 | return AE_OK; | |
570 | } | |
571 | ||
745a5d21 CC |
572 | args.eax = ACER_AMW0_WRITE; |
573 | args.ecx = args.edx = 0; | |
574 | ||
575 | args.ebx = 0xa2 << 8; | |
576 | args.ebx |= ACER_AMW0_WIRELESS_MASK; | |
577 | ||
578 | status = wmab_execute(&args, &out); | |
579 | if (ACPI_FAILURE(status)) | |
580 | return status; | |
581 | ||
582 | obj = (union acpi_object *) out.pointer; | |
583 | if (obj && obj->type == ACPI_TYPE_BUFFER && | |
584 | obj->buffer.length == sizeof(struct wmab_ret)) { | |
585 | ret = *((struct wmab_ret *) obj->buffer.pointer); | |
586 | } else { | |
587 | return AE_ERROR; | |
588 | } | |
589 | ||
590 | if (ret.eax & 0x1) | |
591 | interface->capability |= ACER_CAP_WIRELESS; | |
592 | ||
593 | args.ebx = 2 << 8; | |
594 | args.ebx |= ACER_AMW0_BLUETOOTH_MASK; | |
595 | ||
596 | status = wmab_execute(&args, &out); | |
597 | if (ACPI_FAILURE(status)) | |
598 | return status; | |
599 | ||
600 | obj = (union acpi_object *) out.pointer; | |
601 | if (obj && obj->type == ACPI_TYPE_BUFFER | |
602 | && obj->buffer.length == sizeof(struct wmab_ret)) { | |
603 | ret = *((struct wmab_ret *) obj->buffer.pointer); | |
604 | } else { | |
605 | return AE_ERROR; | |
606 | } | |
607 | ||
608 | if (ret.eax & 0x1) | |
609 | interface->capability |= ACER_CAP_BLUETOOTH; | |
610 | ||
611 | kfree(out.pointer); | |
612 | ||
613 | /* | |
614 | * This appears to be safe to enable, since all Wistron based laptops | |
615 | * appear to use the same EC register for brightness, even if they | |
616 | * differ for wireless, etc | |
617 | */ | |
9991d9f2 CC |
618 | if (quirks->brightness >= 0) |
619 | interface->capability |= ACER_CAP_BRIGHTNESS; | |
745a5d21 CC |
620 | |
621 | return AE_OK; | |
622 | } | |
623 | ||
624 | static struct wmi_interface AMW0_interface = { | |
625 | .type = ACER_AMW0, | |
626 | }; | |
627 | ||
628 | static struct wmi_interface AMW0_V2_interface = { | |
629 | .type = ACER_AMW0_V2, | |
630 | }; | |
631 | ||
632 | /* | |
633 | * New interface (The WMID interface) | |
634 | */ | |
635 | static acpi_status | |
636 | WMI_execute_u32(u32 method_id, u32 in, u32 *out) | |
637 | { | |
638 | struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) }; | |
639 | struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL }; | |
640 | union acpi_object *obj; | |
641 | u32 tmp; | |
642 | acpi_status status; | |
643 | ||
644 | status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result); | |
645 | ||
646 | if (ACPI_FAILURE(status)) | |
647 | return status; | |
648 | ||
649 | obj = (union acpi_object *) result.pointer; | |
650 | if (obj && obj->type == ACPI_TYPE_BUFFER && | |
651 | obj->buffer.length == sizeof(u32)) { | |
652 | tmp = *((u32 *) obj->buffer.pointer); | |
653 | } else { | |
654 | tmp = 0; | |
655 | } | |
656 | ||
657 | if (out) | |
658 | *out = tmp; | |
659 | ||
660 | kfree(result.pointer); | |
661 | ||
662 | return status; | |
663 | } | |
664 | ||
665 | static acpi_status WMID_get_u32(u32 *value, u32 cap, | |
666 | struct wmi_interface *iface) | |
667 | { | |
668 | acpi_status status; | |
669 | u8 tmp; | |
670 | u32 result, method_id = 0; | |
671 | ||
672 | switch (cap) { | |
673 | case ACER_CAP_WIRELESS: | |
674 | method_id = ACER_WMID_GET_WIRELESS_METHODID; | |
675 | break; | |
676 | case ACER_CAP_BLUETOOTH: | |
677 | method_id = ACER_WMID_GET_BLUETOOTH_METHODID; | |
678 | break; | |
679 | case ACER_CAP_BRIGHTNESS: | |
680 | method_id = ACER_WMID_GET_BRIGHTNESS_METHODID; | |
681 | break; | |
682 | case ACER_CAP_THREEG: | |
683 | method_id = ACER_WMID_GET_THREEG_METHODID; | |
684 | break; | |
685 | case ACER_CAP_MAILLED: | |
686 | if (quirks->mailled == 1) { | |
687 | ec_read(0x9f, &tmp); | |
688 | *value = tmp & 0x1; | |
689 | return 0; | |
690 | } | |
691 | default: | |
692 | return AE_BAD_ADDRESS; | |
693 | } | |
694 | status = WMI_execute_u32(method_id, 0, &result); | |
695 | ||
696 | if (ACPI_SUCCESS(status)) | |
697 | *value = (u8)result; | |
698 | ||
699 | return status; | |
700 | } | |
701 | ||
702 | static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface) | |
703 | { | |
704 | u32 method_id = 0; | |
705 | char param; | |
706 | ||
707 | switch (cap) { | |
708 | case ACER_CAP_BRIGHTNESS: | |
709 | if (value > max_brightness) | |
710 | return AE_BAD_PARAMETER; | |
711 | method_id = ACER_WMID_SET_BRIGHTNESS_METHODID; | |
712 | break; | |
713 | case ACER_CAP_WIRELESS: | |
714 | if (value > 1) | |
715 | return AE_BAD_PARAMETER; | |
716 | method_id = ACER_WMID_SET_WIRELESS_METHODID; | |
717 | break; | |
718 | case ACER_CAP_BLUETOOTH: | |
719 | if (value > 1) | |
720 | return AE_BAD_PARAMETER; | |
721 | method_id = ACER_WMID_SET_BLUETOOTH_METHODID; | |
722 | break; | |
723 | case ACER_CAP_THREEG: | |
724 | if (value > 1) | |
725 | return AE_BAD_PARAMETER; | |
726 | method_id = ACER_WMID_SET_THREEG_METHODID; | |
727 | break; | |
728 | case ACER_CAP_MAILLED: | |
729 | if (value > 1) | |
730 | return AE_BAD_PARAMETER; | |
731 | if (quirks->mailled == 1) { | |
732 | param = value ? 0x92 : 0x93; | |
733 | i8042_command(¶m, 0x1059); | |
734 | return 0; | |
735 | } | |
736 | break; | |
737 | default: | |
738 | return AE_BAD_ADDRESS; | |
739 | } | |
740 | return WMI_execute_u32(method_id, (u32)value, NULL); | |
741 | } | |
742 | ||
743 | static acpi_status WMID_set_capabilities(void) | |
744 | { | |
745 | struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; | |
746 | union acpi_object *obj; | |
747 | acpi_status status; | |
748 | u32 devices; | |
749 | ||
750 | status = wmi_query_block(WMID_GUID2, 1, &out); | |
751 | if (ACPI_FAILURE(status)) | |
752 | return status; | |
753 | ||
754 | obj = (union acpi_object *) out.pointer; | |
755 | if (obj && obj->type == ACPI_TYPE_BUFFER && | |
756 | obj->buffer.length == sizeof(u32)) { | |
757 | devices = *((u32 *) obj->buffer.pointer); | |
758 | } else { | |
759 | return AE_ERROR; | |
760 | } | |
761 | ||
762 | /* Not sure on the meaning of the relevant bits yet to detect these */ | |
763 | interface->capability |= ACER_CAP_WIRELESS; | |
764 | interface->capability |= ACER_CAP_THREEG; | |
765 | ||
766 | /* WMID always provides brightness methods */ | |
767 | interface->capability |= ACER_CAP_BRIGHTNESS; | |
768 | ||
769 | if (devices & 0x10) | |
770 | interface->capability |= ACER_CAP_BLUETOOTH; | |
771 | ||
772 | if (!(devices & 0x20)) | |
773 | max_brightness = 0x9; | |
774 | ||
775 | return status; | |
776 | } | |
777 | ||
778 | static struct wmi_interface wmid_interface = { | |
779 | .type = ACER_WMID, | |
780 | }; | |
781 | ||
782 | /* | |
783 | * Generic Device (interface-independent) | |
784 | */ | |
785 | ||
786 | static acpi_status get_u32(u32 *value, u32 cap) | |
787 | { | |
788 | acpi_status status = AE_BAD_ADDRESS; | |
789 | ||
790 | switch (interface->type) { | |
791 | case ACER_AMW0: | |
792 | status = AMW0_get_u32(value, cap, interface); | |
793 | break; | |
794 | case ACER_AMW0_V2: | |
795 | if (cap == ACER_CAP_MAILLED) { | |
796 | status = AMW0_get_u32(value, cap, interface); | |
797 | break; | |
798 | } | |
799 | case ACER_WMID: | |
800 | status = WMID_get_u32(value, cap, interface); | |
801 | break; | |
802 | } | |
803 | ||
804 | return status; | |
805 | } | |
806 | ||
807 | static acpi_status set_u32(u32 value, u32 cap) | |
808 | { | |
5c742b45 CC |
809 | acpi_status status; |
810 | ||
745a5d21 CC |
811 | if (interface->capability & cap) { |
812 | switch (interface->type) { | |
813 | case ACER_AMW0: | |
814 | return AMW0_set_u32(value, cap, interface); | |
815 | case ACER_AMW0_V2: | |
5c742b45 CC |
816 | if (cap == ACER_CAP_MAILLED) |
817 | return AMW0_set_u32(value, cap, interface); | |
818 | ||
819 | /* | |
820 | * On some models, some WMID methods don't toggle | |
821 | * properly. For those cases, we want to run the AMW0 | |
822 | * method afterwards to be certain we've really toggled | |
823 | * the device state. | |
824 | */ | |
825 | if (cap == ACER_CAP_WIRELESS || | |
826 | cap == ACER_CAP_BLUETOOTH) { | |
827 | status = WMID_set_u32(value, cap, interface); | |
828 | if (ACPI_FAILURE(status)) | |
829 | return status; | |
830 | ||
831 | return AMW0_set_u32(value, cap, interface); | |
832 | } | |
745a5d21 CC |
833 | case ACER_WMID: |
834 | return WMID_set_u32(value, cap, interface); | |
835 | default: | |
836 | return AE_BAD_PARAMETER; | |
837 | } | |
838 | } | |
839 | return AE_BAD_PARAMETER; | |
840 | } | |
841 | ||
842 | static void __init acer_commandline_init(void) | |
843 | { | |
844 | /* | |
845 | * These will all fail silently if the value given is invalid, or the | |
846 | * capability isn't available on the given interface | |
847 | */ | |
848 | set_u32(mailled, ACER_CAP_MAILLED); | |
849 | set_u32(wireless, ACER_CAP_WIRELESS); | |
850 | set_u32(bluetooth, ACER_CAP_BLUETOOTH); | |
851 | set_u32(threeg, ACER_CAP_THREEG); | |
852 | set_u32(brightness, ACER_CAP_BRIGHTNESS); | |
853 | } | |
854 | ||
855 | /* | |
856 | * LED device (Mail LED only, no other LEDs known yet) | |
857 | */ | |
858 | static void mail_led_set(struct led_classdev *led_cdev, | |
859 | enum led_brightness value) | |
860 | { | |
861 | set_u32(value, ACER_CAP_MAILLED); | |
862 | } | |
863 | ||
864 | static struct led_classdev mail_led = { | |
343c0042 | 865 | .name = "acer-wmi::mail", |
745a5d21 CC |
866 | .brightness_set = mail_led_set, |
867 | }; | |
868 | ||
7560e385 | 869 | static int __devinit acer_led_init(struct device *dev) |
745a5d21 CC |
870 | { |
871 | return led_classdev_register(dev, &mail_led); | |
872 | } | |
873 | ||
874 | static void acer_led_exit(void) | |
875 | { | |
876 | led_classdev_unregister(&mail_led); | |
877 | } | |
878 | ||
879 | /* | |
880 | * Backlight device | |
881 | */ | |
882 | static struct backlight_device *acer_backlight_device; | |
883 | ||
884 | static int read_brightness(struct backlight_device *bd) | |
885 | { | |
886 | u32 value; | |
887 | get_u32(&value, ACER_CAP_BRIGHTNESS); | |
888 | return value; | |
889 | } | |
890 | ||
891 | static int update_bl_status(struct backlight_device *bd) | |
892 | { | |
f2b585b4 CC |
893 | int intensity = bd->props.brightness; |
894 | ||
895 | if (bd->props.power != FB_BLANK_UNBLANK) | |
896 | intensity = 0; | |
897 | if (bd->props.fb_blank != FB_BLANK_UNBLANK) | |
898 | intensity = 0; | |
899 | ||
900 | set_u32(intensity, ACER_CAP_BRIGHTNESS); | |
901 | ||
745a5d21 CC |
902 | return 0; |
903 | } | |
904 | ||
905 | static struct backlight_ops acer_bl_ops = { | |
906 | .get_brightness = read_brightness, | |
907 | .update_status = update_bl_status, | |
908 | }; | |
909 | ||
7560e385 | 910 | static int __devinit acer_backlight_init(struct device *dev) |
745a5d21 CC |
911 | { |
912 | struct backlight_device *bd; | |
913 | ||
914 | bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops); | |
915 | if (IS_ERR(bd)) { | |
916 | printk(ACER_ERR "Could not register Acer backlight device\n"); | |
917 | acer_backlight_device = NULL; | |
918 | return PTR_ERR(bd); | |
919 | } | |
920 | ||
921 | acer_backlight_device = bd; | |
922 | ||
f2b585b4 CC |
923 | bd->props.power = FB_BLANK_UNBLANK; |
924 | bd->props.brightness = max_brightness; | |
745a5d21 | 925 | bd->props.max_brightness = max_brightness; |
745a5d21 CC |
926 | backlight_update_status(bd); |
927 | return 0; | |
928 | } | |
929 | ||
7560e385 | 930 | static void acer_backlight_exit(void) |
745a5d21 CC |
931 | { |
932 | backlight_device_unregister(acer_backlight_device); | |
933 | } | |
934 | ||
935 | /* | |
936 | * Read/ write bool sysfs macro | |
937 | */ | |
938 | #define show_set_bool(value, cap) \ | |
939 | static ssize_t \ | |
940 | show_bool_##value(struct device *dev, struct device_attribute *attr, \ | |
941 | char *buf) \ | |
942 | { \ | |
943 | u32 result; \ | |
944 | acpi_status status = get_u32(&result, cap); \ | |
945 | if (ACPI_SUCCESS(status)) \ | |
946 | return sprintf(buf, "%u\n", result); \ | |
947 | return sprintf(buf, "Read error\n"); \ | |
948 | } \ | |
949 | \ | |
950 | static ssize_t \ | |
951 | set_bool_##value(struct device *dev, struct device_attribute *attr, \ | |
952 | const char *buf, size_t count) \ | |
953 | { \ | |
954 | u32 tmp = simple_strtoul(buf, NULL, 10); \ | |
955 | acpi_status status = set_u32(tmp, cap); \ | |
956 | if (ACPI_FAILURE(status)) \ | |
957 | return -EINVAL; \ | |
958 | return count; \ | |
959 | } \ | |
960 | static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \ | |
961 | show_bool_##value, set_bool_##value); | |
962 | ||
963 | show_set_bool(wireless, ACER_CAP_WIRELESS); | |
964 | show_set_bool(bluetooth, ACER_CAP_BLUETOOTH); | |
965 | show_set_bool(threeg, ACER_CAP_THREEG); | |
966 | ||
967 | /* | |
968 | * Read interface sysfs macro | |
969 | */ | |
970 | static ssize_t show_interface(struct device *dev, struct device_attribute *attr, | |
971 | char *buf) | |
972 | { | |
973 | switch (interface->type) { | |
974 | case ACER_AMW0: | |
975 | return sprintf(buf, "AMW0\n"); | |
976 | case ACER_AMW0_V2: | |
977 | return sprintf(buf, "AMW0 v2\n"); | |
978 | case ACER_WMID: | |
979 | return sprintf(buf, "WMID\n"); | |
980 | default: | |
981 | return sprintf(buf, "Error!\n"); | |
982 | } | |
983 | } | |
984 | ||
985 | static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR, | |
986 | show_interface, NULL); | |
987 | ||
81143522 CC |
988 | /* |
989 | * debugfs functions | |
990 | */ | |
991 | static u32 get_wmid_devices(void) | |
992 | { | |
993 | struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; | |
994 | union acpi_object *obj; | |
995 | acpi_status status; | |
996 | ||
997 | status = wmi_query_block(WMID_GUID2, 1, &out); | |
998 | if (ACPI_FAILURE(status)) | |
999 | return 0; | |
1000 | ||
1001 | obj = (union acpi_object *) out.pointer; | |
1002 | if (obj && obj->type == ACPI_TYPE_BUFFER && | |
1003 | obj->buffer.length == sizeof(u32)) { | |
1004 | return *((u32 *) obj->buffer.pointer); | |
1005 | } else { | |
1006 | return 0; | |
1007 | } | |
1008 | } | |
1009 | ||
745a5d21 CC |
1010 | /* |
1011 | * Platform device | |
1012 | */ | |
1013 | static int __devinit acer_platform_probe(struct platform_device *device) | |
1014 | { | |
1015 | int err; | |
1016 | ||
1017 | if (has_cap(ACER_CAP_MAILLED)) { | |
1018 | err = acer_led_init(&device->dev); | |
1019 | if (err) | |
1020 | goto error_mailled; | |
1021 | } | |
1022 | ||
1023 | if (has_cap(ACER_CAP_BRIGHTNESS)) { | |
1024 | err = acer_backlight_init(&device->dev); | |
1025 | if (err) | |
1026 | goto error_brightness; | |
1027 | } | |
1028 | ||
1029 | return 0; | |
1030 | ||
1031 | error_brightness: | |
1032 | acer_led_exit(); | |
1033 | error_mailled: | |
1034 | return err; | |
1035 | } | |
1036 | ||
1037 | static int acer_platform_remove(struct platform_device *device) | |
1038 | { | |
1039 | if (has_cap(ACER_CAP_MAILLED)) | |
1040 | acer_led_exit(); | |
1041 | if (has_cap(ACER_CAP_BRIGHTNESS)) | |
1042 | acer_backlight_exit(); | |
1043 | return 0; | |
1044 | } | |
1045 | ||
1046 | static int acer_platform_suspend(struct platform_device *dev, | |
1047 | pm_message_t state) | |
1048 | { | |
1049 | u32 value; | |
1050 | struct acer_data *data = &interface->data; | |
1051 | ||
1052 | if (!data) | |
1053 | return -ENOMEM; | |
1054 | ||
1055 | if (has_cap(ACER_CAP_WIRELESS)) { | |
1056 | get_u32(&value, ACER_CAP_WIRELESS); | |
1057 | data->wireless = value; | |
1058 | } | |
1059 | ||
1060 | if (has_cap(ACER_CAP_BLUETOOTH)) { | |
1061 | get_u32(&value, ACER_CAP_BLUETOOTH); | |
1062 | data->bluetooth = value; | |
1063 | } | |
1064 | ||
1065 | if (has_cap(ACER_CAP_MAILLED)) { | |
1066 | get_u32(&value, ACER_CAP_MAILLED); | |
1067 | data->mailled = value; | |
1068 | } | |
1069 | ||
1070 | if (has_cap(ACER_CAP_BRIGHTNESS)) { | |
1071 | get_u32(&value, ACER_CAP_BRIGHTNESS); | |
1072 | data->brightness = value; | |
1073 | } | |
1074 | ||
1075 | return 0; | |
1076 | } | |
1077 | ||
1078 | static int acer_platform_resume(struct platform_device *device) | |
1079 | { | |
1080 | struct acer_data *data = &interface->data; | |
1081 | ||
1082 | if (!data) | |
1083 | return -ENOMEM; | |
1084 | ||
1085 | if (has_cap(ACER_CAP_WIRELESS)) | |
1086 | set_u32(data->wireless, ACER_CAP_WIRELESS); | |
1087 | ||
1088 | if (has_cap(ACER_CAP_BLUETOOTH)) | |
1089 | set_u32(data->bluetooth, ACER_CAP_BLUETOOTH); | |
1090 | ||
1091 | if (has_cap(ACER_CAP_THREEG)) | |
1092 | set_u32(data->threeg, ACER_CAP_THREEG); | |
1093 | ||
1094 | if (has_cap(ACER_CAP_MAILLED)) | |
1095 | set_u32(data->mailled, ACER_CAP_MAILLED); | |
1096 | ||
1097 | if (has_cap(ACER_CAP_BRIGHTNESS)) | |
1098 | set_u32(data->brightness, ACER_CAP_BRIGHTNESS); | |
1099 | ||
1100 | return 0; | |
1101 | } | |
1102 | ||
1103 | static struct platform_driver acer_platform_driver = { | |
1104 | .driver = { | |
1105 | .name = "acer-wmi", | |
1106 | .owner = THIS_MODULE, | |
1107 | }, | |
1108 | .probe = acer_platform_probe, | |
1109 | .remove = acer_platform_remove, | |
1110 | .suspend = acer_platform_suspend, | |
1111 | .resume = acer_platform_resume, | |
1112 | }; | |
1113 | ||
1114 | static struct platform_device *acer_platform_device; | |
1115 | ||
1116 | static int remove_sysfs(struct platform_device *device) | |
1117 | { | |
1118 | if (has_cap(ACER_CAP_WIRELESS)) | |
1119 | device_remove_file(&device->dev, &dev_attr_wireless); | |
1120 | ||
1121 | if (has_cap(ACER_CAP_BLUETOOTH)) | |
1122 | device_remove_file(&device->dev, &dev_attr_bluetooth); | |
1123 | ||
1124 | if (has_cap(ACER_CAP_THREEG)) | |
1125 | device_remove_file(&device->dev, &dev_attr_threeg); | |
1126 | ||
1127 | device_remove_file(&device->dev, &dev_attr_interface); | |
1128 | ||
1129 | return 0; | |
1130 | } | |
1131 | ||
1132 | static int create_sysfs(void) | |
1133 | { | |
1134 | int retval = -ENOMEM; | |
1135 | ||
1136 | if (has_cap(ACER_CAP_WIRELESS)) { | |
1137 | retval = device_create_file(&acer_platform_device->dev, | |
1138 | &dev_attr_wireless); | |
1139 | if (retval) | |
1140 | goto error_sysfs; | |
1141 | } | |
1142 | ||
1143 | if (has_cap(ACER_CAP_BLUETOOTH)) { | |
1144 | retval = device_create_file(&acer_platform_device->dev, | |
1145 | &dev_attr_bluetooth); | |
1146 | if (retval) | |
1147 | goto error_sysfs; | |
1148 | } | |
1149 | ||
1150 | if (has_cap(ACER_CAP_THREEG)) { | |
1151 | retval = device_create_file(&acer_platform_device->dev, | |
1152 | &dev_attr_threeg); | |
1153 | if (retval) | |
1154 | goto error_sysfs; | |
1155 | } | |
1156 | ||
1157 | retval = device_create_file(&acer_platform_device->dev, | |
1158 | &dev_attr_interface); | |
1159 | if (retval) | |
1160 | goto error_sysfs; | |
1161 | ||
1162 | return 0; | |
1163 | ||
1164 | error_sysfs: | |
1165 | remove_sysfs(acer_platform_device); | |
1166 | return retval; | |
1167 | } | |
1168 | ||
81143522 CC |
1169 | static void remove_debugfs(void) |
1170 | { | |
1171 | debugfs_remove(interface->debug.devices); | |
1172 | debugfs_remove(interface->debug.root); | |
1173 | } | |
1174 | ||
1175 | static int create_debugfs(void) | |
1176 | { | |
1177 | interface->debug.root = debugfs_create_dir("acer-wmi", NULL); | |
1178 | if (!interface->debug.root) { | |
1179 | printk(ACER_ERR "Failed to create debugfs directory"); | |
1180 | return -ENOMEM; | |
1181 | } | |
1182 | ||
1183 | interface->debug.devices = debugfs_create_u32("devices", S_IRUGO, | |
1184 | interface->debug.root, | |
1185 | &interface->debug.wmid_devices); | |
1186 | if (!interface->debug.devices) | |
1187 | goto error_debugfs; | |
1188 | ||
1189 | return 0; | |
1190 | ||
1191 | error_debugfs: | |
1192 | remove_debugfs(); | |
1193 | return -ENOMEM; | |
1194 | } | |
1195 | ||
745a5d21 CC |
1196 | static int __init acer_wmi_init(void) |
1197 | { | |
1198 | int err; | |
1199 | ||
860f0c6b | 1200 | printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n"); |
745a5d21 | 1201 | |
9991d9f2 CC |
1202 | find_quirks(); |
1203 | ||
745a5d21 CC |
1204 | /* |
1205 | * Detect which ACPI-WMI interface we're using. | |
1206 | */ | |
1207 | if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) | |
1208 | interface = &AMW0_V2_interface; | |
1209 | ||
1210 | if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) | |
1211 | interface = &wmid_interface; | |
1212 | ||
1213 | if (wmi_has_guid(WMID_GUID2) && interface) { | |
1214 | if (ACPI_FAILURE(WMID_set_capabilities())) { | |
8d039bc7 CC |
1215 | printk(ACER_ERR "Unable to detect available WMID " |
1216 | "devices\n"); | |
745a5d21 CC |
1217 | return -ENODEV; |
1218 | } | |
1219 | } else if (!wmi_has_guid(WMID_GUID2) && interface) { | |
8d039bc7 | 1220 | printk(ACER_ERR "No WMID device detection method found\n"); |
745a5d21 CC |
1221 | return -ENODEV; |
1222 | } | |
1223 | ||
1224 | if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) { | |
1225 | interface = &AMW0_interface; | |
1226 | ||
1227 | if (ACPI_FAILURE(AMW0_set_capabilities())) { | |
8d039bc7 CC |
1228 | printk(ACER_ERR "Unable to detect available AMW0 " |
1229 | "devices\n"); | |
745a5d21 CC |
1230 | return -ENODEV; |
1231 | } | |
1232 | } | |
1233 | ||
9b963c40 CC |
1234 | if (wmi_has_guid(AMW0_GUID1)) |
1235 | AMW0_find_mailled(); | |
745a5d21 | 1236 | |
745a5d21 | 1237 | if (!interface) { |
8d039bc7 CC |
1238 | printk(ACER_ERR "No or unsupported WMI interface, unable to " |
1239 | "load\n"); | |
745a5d21 CC |
1240 | return -ENODEV; |
1241 | } | |
1242 | ||
83097aca AV |
1243 | set_quirks(); |
1244 | ||
745a5d21 CC |
1245 | if (platform_driver_register(&acer_platform_driver)) { |
1246 | printk(ACER_ERR "Unable to register platform driver.\n"); | |
1247 | goto error_platform_register; | |
1248 | } | |
1249 | acer_platform_device = platform_device_alloc("acer-wmi", -1); | |
1250 | platform_device_add(acer_platform_device); | |
1251 | ||
1252 | err = create_sysfs(); | |
1253 | if (err) | |
1254 | return err; | |
1255 | ||
81143522 CC |
1256 | if (wmi_has_guid(WMID_GUID2)) { |
1257 | interface->debug.wmid_devices = get_wmid_devices(); | |
1258 | err = create_debugfs(); | |
1259 | if (err) | |
1260 | return err; | |
1261 | } | |
1262 | ||
745a5d21 CC |
1263 | /* Override any initial settings with values from the commandline */ |
1264 | acer_commandline_init(); | |
1265 | ||
1266 | return 0; | |
1267 | ||
1268 | error_platform_register: | |
1269 | return -ENODEV; | |
1270 | } | |
1271 | ||
1272 | static void __exit acer_wmi_exit(void) | |
1273 | { | |
1274 | remove_sysfs(acer_platform_device); | |
1275 | platform_device_del(acer_platform_device); | |
1276 | platform_driver_unregister(&acer_platform_driver); | |
1277 | ||
1278 | printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n"); | |
1279 | return; | |
1280 | } | |
1281 | ||
1282 | module_init(acer_wmi_init); | |
1283 | module_exit(acer_wmi_exit); |