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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[linux-2.6-block.git] / drivers / platform / x86 / acer-wmi.c
CommitLineData
745a5d21
CC		 1/*
2 * Acer WMI Laptop Extras
3 *
4f0175dc 4 * Copyright (C) 2007-2009 Carlos Corbacho <carlos@strangeworlds.co.uk>
745a5d21
CC		 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>
0606e1ab
CC		 36#include <linux/rfkill.h>
37#include <linux/workqueue.h>
81143522 38#include <linux/debugfs.h>
5a0e3ad6 39#include <linux/slab.h>
745a5d21
CC		 40
41#include <acpi/acpi_drivers.h>
42
43MODULE_AUTHOR("Carlos Corbacho");
44MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
45MODULE_LICENSE("GPL");
46
47#define ACER_LOGPREFIX "acer-wmi: "
48#define ACER_ERR KERN_ERR ACER_LOGPREFIX
49#define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
50#define ACER_INFO KERN_INFO ACER_LOGPREFIX
51
52/*
53 * The following defines quirks to get some specific functions to work
54 * which are known to not be supported over ACPI-WMI (such as the mail LED
55 * on WMID based Acer's)
56 */
57struct acer_quirks {
58 const char *vendor;
59 const char *model;
60 u16 quirks;
61};
62
63/*
64 * Magic Number
65 * Meaning is unknown - this number is required for writing to ACPI for AMW0
66 * (it's also used in acerhk when directly accessing the BIOS)
67 */
68#define ACER_AMW0_WRITE 0x9610
69
70/*
71 * Bit masks for the AMW0 interface
72 */
73#define ACER_AMW0_WIRELESS_MASK 0x35
74#define ACER_AMW0_BLUETOOTH_MASK 0x34
75#define ACER_AMW0_MAILLED_MASK 0x31
76
77/*
78 * Method IDs for WMID interface
79 */
80#define ACER_WMID_GET_WIRELESS_METHODID 1
81#define ACER_WMID_GET_BLUETOOTH_METHODID 2
82#define ACER_WMID_GET_BRIGHTNESS_METHODID 3
83#define ACER_WMID_SET_WIRELESS_METHODID 4
84#define ACER_WMID_SET_BLUETOOTH_METHODID 5
85#define ACER_WMID_SET_BRIGHTNESS_METHODID 6
86#define ACER_WMID_GET_THREEG_METHODID 10
87#define ACER_WMID_SET_THREEG_METHODID 11
88
89/*
90 * Acer ACPI method GUIDs
91 */
92#define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
5753dd53 93#define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
745a5d21
CC		 94#define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
95#define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
96
97MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
98MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
99
745a5d21
CC		 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 */
113enum 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
124static int max_brightness = 0xF;
125
745a5d21
CC		 126static int mailled = -1;
127static int brightness = -1;
128static int threeg = -1;
129static int force_series;
130
131module_param(mailled, int, 0444);
745a5d21
CC		 132module_param(brightness, int, 0444);
133module_param(threeg, int, 0444);
134module_param(force_series, int, 0444);
745a5d21
CC		 135MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
136MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
137MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
138MODULE_PARM_DESC(force_series, "Force a different laptop series");
139
140struct acer_data {
141 int mailled;
745a5d21
CC		 142 int threeg;
143 int brightness;
144};
145
81143522
CC		 146struct acer_debug {
147 struct dentry *root;
148 struct dentry *devices;
149 u32 wmid_devices;
150};
151
0606e1ab
CC		 152static struct rfkill *wireless_rfkill;
153static struct rfkill *bluetooth_rfkill;
154
745a5d21
CC		 155/* Each low-level interface must define at least some of the following */
156struct wmi_interface {
157 /* The WMI device type */
158 u32 type;
159
160 /* The capabilities this interface provides */
161 u32 capability;
162
163 /* Private data for the current interface */
164 struct acer_data data;
81143522
CC		 165
166 /* debugfs entries associated with this interface */
167 struct acer_debug debug;
745a5d21
CC		 168};
169
170/* The static interface pointer, points to the currently detected interface */
171static struct wmi_interface *interface;
172
173/*
174 * Embedded Controller quirks
175 * Some laptops require us to directly access the EC to either enable or query
176 * features that are not available through WMI.
177 */
178
179struct quirk_entry {
180 u8 wireless;
181 u8 mailled;
9991d9f2 182 s8 brightness;
745a5d21
CC		 183 u8 bluetooth;
184};
185
186static struct quirk_entry *quirks;
187
188static void set_quirks(void)
189{
83097aca
AV		 190 if (!interface)
191 return;
192
745a5d21
CC		 193 if (quirks->mailled)
194 interface->capability |= ACER_CAP_MAILLED;
195
196 if (quirks->brightness)
197 interface->capability |= ACER_CAP_BRIGHTNESS;
198}
199
200static int dmi_matched(const struct dmi_system_id *dmi)
201{
202 quirks = dmi->driver_data;
203 return 0;
204}
205
206static struct quirk_entry quirk_unknown = {
207};
208
9991d9f2
CC		 209static struct quirk_entry quirk_acer_aspire_1520 = {
210 .brightness = -1,
211};
212
745a5d21
CC		 213static struct quirk_entry quirk_acer_travelmate_2490 = {
214 .mailled = 1,
215};
216
217/* This AMW0 laptop has no bluetooth */
218static struct quirk_entry quirk_medion_md_98300 = {
219 .wireless = 1,
220};
221
6f061ab5
CC		 222static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
223 .wireless = 2,
224};
225
a74dd5fd
CC		 226/* The Aspire One has a dummy ACPI-WMI interface - disable it */
227static struct dmi_system_id __devinitdata acer_blacklist[] = {
228 {
229 .ident = "Acer Aspire One (SSD)",
230 .matches = {
231 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
232 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
233 },
234 },
235 {
236 .ident = "Acer Aspire One (HDD)",
237 .matches = {
238 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
239 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
240 },
241 },
242 {}
243};
244
745a5d21 245static struct dmi_system_id acer_quirks[] = {
9991d9f2
CC		 246 {
247 .callback = dmi_matched,
248 .ident = "Acer Aspire 1360",
249 .matches = {
250 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
251 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
252 },
253 .driver_data = &quirk_acer_aspire_1520,
254 },
255 {
256 .callback = dmi_matched,
257 .ident = "Acer Aspire 1520",
258 .matches = {
259 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
260 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
261 },
262 .driver_data = &quirk_acer_aspire_1520,
263 },
745a5d21
CC		 264 {
265 .callback = dmi_matched,
266 .ident = "Acer Aspire 3100",
267 .matches = {
268 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
269 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
270 },
271 .driver_data = &quirk_acer_travelmate_2490,
272 },
ed9cfe98
CC		 273 {
274 .callback = dmi_matched,
275 .ident = "Acer Aspire 3610",
276 .matches = {
277 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
278 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
279 },
280 .driver_data = &quirk_acer_travelmate_2490,
281 },
745a5d21
CC		 282 {
283 .callback = dmi_matched,
284 .ident = "Acer Aspire 5100",
285 .matches = {
286 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
287 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
288 },
289 .driver_data = &quirk_acer_travelmate_2490,
290 },
ed9cfe98
CC		 291 {
292 .callback = dmi_matched,
293 .ident = "Acer Aspire 5610",
294 .matches = {
295 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
296 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
297 },
298 .driver_data = &quirk_acer_travelmate_2490,
299 },
745a5d21
CC		 300 {
301 .callback = dmi_matched,
302 .ident = "Acer Aspire 5630",
303 .matches = {
304 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
305 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
306 },
307 .driver_data = &quirk_acer_travelmate_2490,
308 },
309 {
310 .callback = dmi_matched,
311 .ident = "Acer Aspire 5650",
312 .matches = {
313 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
314 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
315 },
316 .driver_data = &quirk_acer_travelmate_2490,
317 },
318 {
319 .callback = dmi_matched,
320 .ident = "Acer Aspire 5680",
321 .matches = {
322 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
323 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
324 },
325 .driver_data = &quirk_acer_travelmate_2490,
326 },
327 {
328 .callback = dmi_matched,
329 .ident = "Acer Aspire 9110",
330 .matches = {
331 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
332 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
333 },
334 .driver_data = &quirk_acer_travelmate_2490,
335 },
336 {
337 .callback = dmi_matched,
338 .ident = "Acer TravelMate 2490",
339 .matches = {
340 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
341 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
342 },
343 .driver_data = &quirk_acer_travelmate_2490,
344 },
262ee35b
CC		 345 {
346 .callback = dmi_matched,
347 .ident = "Acer TravelMate 4200",
348 .matches = {
349 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
350 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
351 },
352 .driver_data = &quirk_acer_travelmate_2490,
353 },
6f061ab5
CC		 354 {
355 .callback = dmi_matched,
356 .ident = "Fujitsu Siemens Amilo Li 1718",
357 .matches = {
358 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
359 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
360 },
361 .driver_data = &quirk_fujitsu_amilo_li_1718,
362 },
745a5d21
CC		 363 {
364 .callback = dmi_matched,
365 .ident = "Medion MD 98300",
366 .matches = {
367 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
368 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
369 },
370 .driver_data = &quirk_medion_md_98300,
371 },
372 {}
373};
374
375/* Find which quirks are needed for a particular vendor/ model pair */
376static void find_quirks(void)
377{
378 if (!force_series) {
379 dmi_check_system(acer_quirks);
380 } else if (force_series == 2490) {
381 quirks = &quirk_acer_travelmate_2490;
382 }
383
384 if (quirks == NULL)
385 quirks = &quirk_unknown;
386
387 set_quirks();
388}
389
390/*
391 * General interface convenience methods
392 */
393
394static bool has_cap(u32 cap)
395{
396 if ((interface->capability & cap) != 0)
397 return 1;
398
399 return 0;
400}
401
402/*
403 * AMW0 (V1) interface
404 */
405struct wmab_args {
406 u32 eax;
407 u32 ebx;
408 u32 ecx;
409 u32 edx;
410};
411
412struct wmab_ret {
413 u32 eax;
414 u32 ebx;
415 u32 ecx;
416 u32 edx;
417 u32 eex;
418};
419
420static acpi_status wmab_execute(struct wmab_args *regbuf,
421struct acpi_buffer *result)
422{
423 struct acpi_buffer input;
424 acpi_status status;
425 input.length = sizeof(struct wmab_args);
426 input.pointer = (u8 *)regbuf;
427
428 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
429
430 return status;
431}
432
433static acpi_status AMW0_get_u32(u32 *value, u32 cap,
434struct wmi_interface *iface)
435{
436 int err;
437 u8 result;
438
439 switch (cap) {
440 case ACER_CAP_MAILLED:
441 switch (quirks->mailled) {
442 default:
443 err = ec_read(0xA, &result);
444 if (err)
445 return AE_ERROR;
446 *value = (result >> 7) & 0x1;
447 return AE_OK;
448 }
449 break;
450 case ACER_CAP_WIRELESS:
451 switch (quirks->wireless) {
452 case 1:
453 err = ec_read(0x7B, &result);
454 if (err)
455 return AE_ERROR;
456 *value = result & 0x1;
457 return AE_OK;
6f061ab5
CC		 458 case 2:
459 err = ec_read(0x71, &result);
460 if (err)
461 return AE_ERROR;
462 *value = result & 0x1;
463 return AE_OK;
745a5d21
CC		 464 default:
465 err = ec_read(0xA, &result);
466 if (err)
467 return AE_ERROR;
468 *value = (result >> 2) & 0x1;
469 return AE_OK;
470 }
471 break;
472 case ACER_CAP_BLUETOOTH:
473 switch (quirks->bluetooth) {
474 default:
475 err = ec_read(0xA, &result);
476 if (err)
477 return AE_ERROR;
478 *value = (result >> 4) & 0x1;
479 return AE_OK;
480 }
481 break;
482 case ACER_CAP_BRIGHTNESS:
483 switch (quirks->brightness) {
484 default:
485 err = ec_read(0x83, &result);
486 if (err)
487 return AE_ERROR;
488 *value = result;
489 return AE_OK;
490 }
491 break;
492 default:
08237974 493 return AE_ERROR;
745a5d21
CC		 494 }
495 return AE_OK;
496}
497
498static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
499{
500 struct wmab_args args;
501
502 args.eax = ACER_AMW0_WRITE;
503 args.ebx = value ? (1<<8) : 0;
504 args.ecx = args.edx = 0;
505
506 switch (cap) {
507 case ACER_CAP_MAILLED:
508 if (value > 1)
509 return AE_BAD_PARAMETER;
510 args.ebx |= ACER_AMW0_MAILLED_MASK;
511 break;
512 case ACER_CAP_WIRELESS:
513 if (value > 1)
514 return AE_BAD_PARAMETER;
515 args.ebx |= ACER_AMW0_WIRELESS_MASK;
516 break;
517 case ACER_CAP_BLUETOOTH:
518 if (value > 1)
519 return AE_BAD_PARAMETER;
520 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
521 break;
522 case ACER_CAP_BRIGHTNESS:
523 if (value > max_brightness)
524 return AE_BAD_PARAMETER;
525 switch (quirks->brightness) {
745a5d21 526 default:
4609d029
CC		 527 return ec_write(0x83, value);
528 break;
745a5d21
CC		 529 }
530 default:
08237974 531 return AE_ERROR;
745a5d21
CC		 532 }
533
534 /* Actually do the set */
535 return wmab_execute(&args, NULL);
536}
537
538static acpi_status AMW0_find_mailled(void)
539{
540 struct wmab_args args;
541 struct wmab_ret ret;
542 acpi_status status = AE_OK;
543 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
544 union acpi_object *obj;
545
546 args.eax = 0x86;
547 args.ebx = args.ecx = args.edx = 0;
548
549 status = wmab_execute(&args, &out);
550 if (ACPI_FAILURE(status))
551 return status;
552
553 obj = (union acpi_object *) out.pointer;
554 if (obj && obj->type == ACPI_TYPE_BUFFER &&
555 obj->buffer.length == sizeof(struct wmab_ret)) {
556 ret = *((struct wmab_ret *) obj->buffer.pointer);
557 } else {
558 return AE_ERROR;
559 }
560
561 if (ret.eex & 0x1)
562 interface->capability |= ACER_CAP_MAILLED;
563
564 kfree(out.pointer);
565
566 return AE_OK;
567}
568
569static acpi_status AMW0_set_capabilities(void)
570{
571 struct wmab_args args;
572 struct wmab_ret ret;
573 acpi_status status = AE_OK;
574 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
575 union acpi_object *obj;
576
5753dd53
CC		 577 /*
578 * On laptops with this strange GUID (non Acer), normal probing doesn't
579 * work.
580 */
581 if (wmi_has_guid(AMW0_GUID2)) {
582 interface->capability |= ACER_CAP_WIRELESS;
583 return AE_OK;
584 }
585
745a5d21
CC		 586 args.eax = ACER_AMW0_WRITE;
587 args.ecx = args.edx = 0;
588
589 args.ebx = 0xa2 << 8;
590 args.ebx |= ACER_AMW0_WIRELESS_MASK;
591
592 status = wmab_execute(&args, &out);
593 if (ACPI_FAILURE(status))
594 return status;
595
596 obj = (union acpi_object *) out.pointer;
597 if (obj && obj->type == ACPI_TYPE_BUFFER &&
598 obj->buffer.length == sizeof(struct wmab_ret)) {
599 ret = *((struct wmab_ret *) obj->buffer.pointer);
600 } else {
601 return AE_ERROR;
602 }
603
604 if (ret.eax & 0x1)
605 interface->capability |= ACER_CAP_WIRELESS;
606
607 args.ebx = 2 << 8;
608 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
609
610 status = wmab_execute(&args, &out);
611 if (ACPI_FAILURE(status))
612 return status;
613
614 obj = (union acpi_object *) out.pointer;
615 if (obj && obj->type == ACPI_TYPE_BUFFER
616 && obj->buffer.length == sizeof(struct wmab_ret)) {
617 ret = *((struct wmab_ret *) obj->buffer.pointer);
618 } else {
619 return AE_ERROR;
620 }
621
622 if (ret.eax & 0x1)
623 interface->capability |= ACER_CAP_BLUETOOTH;
624
625 kfree(out.pointer);
626
627 /*
628 * This appears to be safe to enable, since all Wistron based laptops
629 * appear to use the same EC register for brightness, even if they
630 * differ for wireless, etc
631 */
9991d9f2
CC		 632 if (quirks->brightness >= 0)
633 interface->capability |= ACER_CAP_BRIGHTNESS;
745a5d21
CC		 634
635 return AE_OK;
636}
637
638static struct wmi_interface AMW0_interface = {
639 .type = ACER_AMW0,
640};
641
642static struct wmi_interface AMW0_V2_interface = {
643 .type = ACER_AMW0_V2,
644};
645
646/*
647 * New interface (The WMID interface)
648 */
649static acpi_status
650WMI_execute_u32(u32 method_id, u32 in, u32 *out)
651{
652 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
653 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
654 union acpi_object *obj;
655 u32 tmp;
656 acpi_status status;
657
658 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
659
660 if (ACPI_FAILURE(status))
661 return status;
662
663 obj = (union acpi_object *) result.pointer;
664 if (obj && obj->type == ACPI_TYPE_BUFFER &&
665 obj->buffer.length == sizeof(u32)) {
666 tmp = *((u32 *) obj->buffer.pointer);
667 } else {
668 tmp = 0;
669 }
670
671 if (out)
672 *out = tmp;
673
674 kfree(result.pointer);
675
676 return status;
677}
678
679static acpi_status WMID_get_u32(u32 *value, u32 cap,
680struct wmi_interface *iface)
681{
682 acpi_status status;
683 u8 tmp;
684 u32 result, method_id = 0;
685
686 switch (cap) {
687 case ACER_CAP_WIRELESS:
688 method_id = ACER_WMID_GET_WIRELESS_METHODID;
689 break;
690 case ACER_CAP_BLUETOOTH:
691 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
692 break;
693 case ACER_CAP_BRIGHTNESS:
694 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
695 break;
696 case ACER_CAP_THREEG:
697 method_id = ACER_WMID_GET_THREEG_METHODID;
698 break;
699 case ACER_CAP_MAILLED:
700 if (quirks->mailled == 1) {
701 ec_read(0x9f, &tmp);
702 *value = tmp & 0x1;
703 return 0;
704 }
705 default:
08237974 706 return AE_ERROR;
745a5d21
CC		 707 }
708 status = WMI_execute_u32(method_id, 0, &result);
709
710 if (ACPI_SUCCESS(status))
711 *value = (u8)result;
712
713 return status;
714}
715
716static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
717{
718 u32 method_id = 0;
719 char param;
720
721 switch (cap) {
722 case ACER_CAP_BRIGHTNESS:
723 if (value > max_brightness)
724 return AE_BAD_PARAMETER;
725 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
726 break;
727 case ACER_CAP_WIRELESS:
728 if (value > 1)
729 return AE_BAD_PARAMETER;
730 method_id = ACER_WMID_SET_WIRELESS_METHODID;
731 break;
732 case ACER_CAP_BLUETOOTH:
733 if (value > 1)
734 return AE_BAD_PARAMETER;
735 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
736 break;
737 case ACER_CAP_THREEG:
738 if (value > 1)
739 return AE_BAD_PARAMETER;
740 method_id = ACER_WMID_SET_THREEG_METHODID;
741 break;
742 case ACER_CAP_MAILLED:
743 if (value > 1)
744 return AE_BAD_PARAMETER;
745 if (quirks->mailled == 1) {
746 param = value ? 0x92 : 0x93;
181d683d 747 i8042_lock_chip();
745a5d21 748 i8042_command(&param, 0x1059);
181d683d 749 i8042_unlock_chip();
745a5d21
CC		 750 return 0;
751 }
752 break;
753 default:
08237974 754 return AE_ERROR;
745a5d21
CC		 755 }
756 return WMI_execute_u32(method_id, (u32)value, NULL);
757}
758
759static acpi_status WMID_set_capabilities(void)
760{
761 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
762 union acpi_object *obj;
763 acpi_status status;
764 u32 devices;
765
766 status = wmi_query_block(WMID_GUID2, 1, &out);
767 if (ACPI_FAILURE(status))
768 return status;
769
770 obj = (union acpi_object *) out.pointer;
771 if (obj && obj->type == ACPI_TYPE_BUFFER &&
772 obj->buffer.length == sizeof(u32)) {
773 devices = *((u32 *) obj->buffer.pointer);
774 } else {
775 return AE_ERROR;
776 }
777
778 /* Not sure on the meaning of the relevant bits yet to detect these */
779 interface->capability |= ACER_CAP_WIRELESS;
780 interface->capability |= ACER_CAP_THREEG;
781
782 /* WMID always provides brightness methods */
783 interface->capability |= ACER_CAP_BRIGHTNESS;
784
785 if (devices & 0x10)
786 interface->capability |= ACER_CAP_BLUETOOTH;
787
788 if (!(devices & 0x20))
789 max_brightness = 0x9;
790
791 return status;
792}
793
794static struct wmi_interface wmid_interface = {
795 .type = ACER_WMID,
796};
797
798/*
799 * Generic Device (interface-independent)
800 */
801
802static acpi_status get_u32(u32 *value, u32 cap)
803{
08237974 804 acpi_status status = AE_ERROR;
745a5d21
CC		 805
806 switch (interface->type) {
807 case ACER_AMW0:
808 status = AMW0_get_u32(value, cap, interface);
809 break;
810 case ACER_AMW0_V2:
811 if (cap == ACER_CAP_MAILLED) {
812 status = AMW0_get_u32(value, cap, interface);
813 break;
814 }
815 case ACER_WMID:
816 status = WMID_get_u32(value, cap, interface);
817 break;
818 }
819
820 return status;
821}
822
823static acpi_status set_u32(u32 value, u32 cap)
824{
5c742b45
CC		 825 acpi_status status;
826
745a5d21
CC		 827 if (interface->capability & cap) {
828 switch (interface->type) {
829 case ACER_AMW0:
830 return AMW0_set_u32(value, cap, interface);
831 case ACER_AMW0_V2:
5c742b45
CC		 832 if (cap == ACER_CAP_MAILLED)
833 return AMW0_set_u32(value, cap, interface);
834
835 /*
836 * On some models, some WMID methods don't toggle
837 * properly. For those cases, we want to run the AMW0
838 * method afterwards to be certain we've really toggled
839 * the device state.
840 */
841 if (cap == ACER_CAP_WIRELESS ||
842 cap == ACER_CAP_BLUETOOTH) {
843 status = WMID_set_u32(value, cap, interface);
844 if (ACPI_FAILURE(status))
845 return status;
846
847 return AMW0_set_u32(value, cap, interface);
848 }
745a5d21
CC		 849 case ACER_WMID:
850 return WMID_set_u32(value, cap, interface);
851 default:
852 return AE_BAD_PARAMETER;
853 }
854 }
855 return AE_BAD_PARAMETER;
856}
857
858static void __init acer_commandline_init(void)
859{
860 /*
861 * These will all fail silently if the value given is invalid, or the
862 * capability isn't available on the given interface
863 */
864 set_u32(mailled, ACER_CAP_MAILLED);
745a5d21
CC		 865 set_u32(threeg, ACER_CAP_THREEG);
866 set_u32(brightness, ACER_CAP_BRIGHTNESS);
867}
868
869/*
870 * LED device (Mail LED only, no other LEDs known yet)
871 */
872static void mail_led_set(struct led_classdev *led_cdev,
873enum led_brightness value)
874{
875 set_u32(value, ACER_CAP_MAILLED);
876}
877
878static struct led_classdev mail_led = {
343c0042 879 .name = "acer-wmi::mail",
745a5d21
CC		 880 .brightness_set = mail_led_set,
881};
882
7560e385 883static int __devinit acer_led_init(struct device *dev)
745a5d21
CC		 884{
885 return led_classdev_register(dev, &mail_led);
886}
887
888static void acer_led_exit(void)
889{
890 led_classdev_unregister(&mail_led);
891}
892
893/*
894 * Backlight device
895 */
896static struct backlight_device *acer_backlight_device;
897
898static int read_brightness(struct backlight_device *bd)
899{
900 u32 value;
901 get_u32(&value, ACER_CAP_BRIGHTNESS);
902 return value;
903}
904
905static int update_bl_status(struct backlight_device *bd)
906{
f2b585b4
CC		 907 int intensity = bd->props.brightness;
908
909 if (bd->props.power != FB_BLANK_UNBLANK)
910 intensity = 0;
911 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
912 intensity = 0;
913
914 set_u32(intensity, ACER_CAP_BRIGHTNESS);
915
745a5d21
CC		 916 return 0;
917}
918
919static struct backlight_ops acer_bl_ops = {
920 .get_brightness = read_brightness,
921 .update_status = update_bl_status,
922};
923
7560e385 924static int __devinit acer_backlight_init(struct device *dev)
745a5d21 925{
a19a6ee6 926 struct backlight_properties props;
745a5d21
CC		 927 struct backlight_device *bd;
928
a19a6ee6
MG		 929 memset(&props, 0, sizeof(struct backlight_properties));
930 props.max_brightness = max_brightness;
931 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
932 &props);
745a5d21
CC		 933 if (IS_ERR(bd)) {
934 printk(ACER_ERR "Could not register Acer backlight device\n");
935 acer_backlight_device = NULL;
936 return PTR_ERR(bd);
937 }
938
939 acer_backlight_device = bd;
940
f2b585b4 941 bd->props.power = FB_BLANK_UNBLANK;
6f6ef82c 942 bd->props.brightness = read_brightness(bd);
745a5d21
CC		 943 backlight_update_status(bd);
944 return 0;
945}
946
7560e385 947static void acer_backlight_exit(void)
745a5d21
CC		 948{
949 backlight_device_unregister(acer_backlight_device);
950}
951
0606e1ab
CC		 952/*
953 * Rfkill devices
954 */
0606e1ab
CC		 955static void acer_rfkill_update(struct work_struct *ignored);
956static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
957static void acer_rfkill_update(struct work_struct *ignored)
958{
959 u32 state;
960 acpi_status status;
961
962 status = get_u32(&state, ACER_CAP_WIRELESS);
963 if (ACPI_SUCCESS(status))
a878417c 964 rfkill_set_sw_state(wireless_rfkill, !state);
0606e1ab
CC		 965
966 if (has_cap(ACER_CAP_BLUETOOTH)) {
967 status = get_u32(&state, ACER_CAP_BLUETOOTH);
968 if (ACPI_SUCCESS(status))
a878417c 969 rfkill_set_sw_state(bluetooth_rfkill, !state);
0606e1ab
CC		 970 }
971
ae3a1b46 972 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
0606e1ab
CC		 973}
974
19d337df 975static int acer_rfkill_set(void *data, bool blocked)
0606e1ab
CC		 976{
977 acpi_status status;
19d337df 978 u32 cap = (unsigned long)data;
ed5c8ef3 979 status = set_u32(!blocked, cap);
0606e1ab
CC		 980 if (ACPI_FAILURE(status))
981 return -ENODEV;
982 return 0;
983}
984
19d337df
JB		 985static const struct rfkill_ops acer_rfkill_ops = {
986 .set_block = acer_rfkill_set,
987};
988
989static struct rfkill *acer_rfkill_register(struct device *dev,
990 enum rfkill_type type,
991 char *name, u32 cap)
0606e1ab
CC		 992{
993 int err;
0606e1ab
CC		 994 struct rfkill *rfkill_dev;
995
19d337df
JB		 996 rfkill_dev = rfkill_alloc(name, dev, type,
997 &acer_rfkill_ops,
998 (void *)(unsigned long)cap);
0606e1ab
CC		 999 if (!rfkill_dev)
1000 return ERR_PTR(-ENOMEM);
0606e1ab
CC		 1001
1002 err = rfkill_register(rfkill_dev);
1003 if (err) {
19d337df 1004 rfkill_destroy(rfkill_dev);
0606e1ab
CC		 1005 return ERR_PTR(err);
1006 }
1007 return rfkill_dev;
1008}
1009
1010static int acer_rfkill_init(struct device *dev)
1011{
1012 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1013 "acer-wireless", ACER_CAP_WIRELESS);
1014 if (IS_ERR(wireless_rfkill))
1015 return PTR_ERR(wireless_rfkill);
1016
1017 if (has_cap(ACER_CAP_BLUETOOTH)) {
1018 bluetooth_rfkill = acer_rfkill_register(dev,
1019 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1020 ACER_CAP_BLUETOOTH);
1021 if (IS_ERR(bluetooth_rfkill)) {
0606e1ab 1022 rfkill_unregister(wireless_rfkill);
19d337df 1023 rfkill_destroy(wireless_rfkill);
0606e1ab
CC		 1024 return PTR_ERR(bluetooth_rfkill);
1025 }
1026 }
1027
ae3a1b46 1028 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
0606e1ab
CC		 1029
1030 return 0;
1031}
1032
1033static void acer_rfkill_exit(void)
1034{
1035 cancel_delayed_work_sync(&acer_rfkill_work);
19d337df 1036
0606e1ab 1037 rfkill_unregister(wireless_rfkill);
19d337df
JB		 1038 rfkill_destroy(wireless_rfkill);
1039
0606e1ab 1040 if (has_cap(ACER_CAP_BLUETOOTH)) {
0606e1ab 1041 rfkill_unregister(bluetooth_rfkill);
19d337df 1042 rfkill_destroy(bluetooth_rfkill);
0606e1ab
CC		 1043 }
1044 return;
1045}
1046
745a5d21 1047/*
7d9a06de 1048 * sysfs interface
745a5d21 1049 */
7d9a06de
CC		 1050static ssize_t show_bool_threeg(struct device *dev,
1051 struct device_attribute *attr, char *buf)
1052{
745a5d21 1053 u32 result; \
7d9a06de
CC		 1054 acpi_status status = get_u32(&result, ACER_CAP_THREEG);
1055 if (ACPI_SUCCESS(status))
1056 return sprintf(buf, "%u\n", result);
1057 return sprintf(buf, "Read error\n");
1058}
1059
1060static ssize_t set_bool_threeg(struct device *dev,
1061 struct device_attribute *attr, const char *buf, size_t count)
1062{
1063 u32 tmp = simple_strtoul(buf, NULL, 10);
1064 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1065 if (ACPI_FAILURE(status))
1066 return -EINVAL;
1067 return count;
1068}
1069static DEVICE_ATTR(threeg, S_IWUGO | S_IRUGO | S_IWUSR, show_bool_threeg,
1070 set_bool_threeg);
745a5d21 1071
745a5d21
CC		 1072static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1073 char *buf)
1074{
1075 switch (interface->type) {
1076 case ACER_AMW0:
1077 return sprintf(buf, "AMW0\n");
1078 case ACER_AMW0_V2:
1079 return sprintf(buf, "AMW0 v2\n");
1080 case ACER_WMID:
1081 return sprintf(buf, "WMID\n");
1082 default:
1083 return sprintf(buf, "Error!\n");
1084 }
1085}
1086
1087static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
1088 show_interface, NULL);
1089
81143522
CC		 1090/*
1091 * debugfs functions
1092 */
1093static u32 get_wmid_devices(void)
1094{
1095 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1096 union acpi_object *obj;
1097 acpi_status status;
1098
1099 status = wmi_query_block(WMID_GUID2, 1, &out);
1100 if (ACPI_FAILURE(status))
1101 return 0;
1102
1103 obj = (union acpi_object *) out.pointer;
1104 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1105 obj->buffer.length == sizeof(u32)) {
1106 return *((u32 *) obj->buffer.pointer);
1107 } else {
1108 return 0;
1109 }
1110}
1111
745a5d21
CC		 1112/*
1113 * Platform device
1114 */
1115static int __devinit acer_platform_probe(struct platform_device *device)
1116{
1117 int err;
1118
1119 if (has_cap(ACER_CAP_MAILLED)) {
1120 err = acer_led_init(&device->dev);
1121 if (err)
1122 goto error_mailled;
1123 }
1124
1125 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1126 err = acer_backlight_init(&device->dev);
1127 if (err)
1128 goto error_brightness;
1129 }
1130
0606e1ab 1131 err = acer_rfkill_init(&device->dev);
350e3290
AW		 1132 if (err)
1133 goto error_rfkill;
0606e1ab
CC		 1134
1135 return err;
745a5d21 1136
350e3290
AW		 1137error_rfkill:
1138 if (has_cap(ACER_CAP_BRIGHTNESS))
1139 acer_backlight_exit();
745a5d21 1140error_brightness:
350e3290
AW		 1141 if (has_cap(ACER_CAP_MAILLED))
1142 acer_led_exit();
745a5d21
CC		 1143error_mailled:
1144 return err;
1145}
1146
1147static int acer_platform_remove(struct platform_device *device)
1148{
1149 if (has_cap(ACER_CAP_MAILLED))
1150 acer_led_exit();
1151 if (has_cap(ACER_CAP_BRIGHTNESS))
1152 acer_backlight_exit();
0606e1ab
CC		 1153
1154 acer_rfkill_exit();
745a5d21
CC		 1155 return 0;
1156}
1157
1158static int acer_platform_suspend(struct platform_device *dev,
1159pm_message_t state)
1160{
1161 u32 value;
1162 struct acer_data *data = &interface->data;
1163
1164 if (!data)
1165 return -ENOMEM;
1166
745a5d21
CC		 1167 if (has_cap(ACER_CAP_MAILLED)) {
1168 get_u32(&value, ACER_CAP_MAILLED);
1169 data->mailled = value;
1170 }
1171
1172 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1173 get_u32(&value, ACER_CAP_BRIGHTNESS);
1174 data->brightness = value;
1175 }
1176
1177 return 0;
1178}
1179
1180static int acer_platform_resume(struct platform_device *device)
1181{
1182 struct acer_data *data = &interface->data;
1183
1184 if (!data)
1185 return -ENOMEM;
1186
745a5d21
CC		 1187 if (has_cap(ACER_CAP_MAILLED))
1188 set_u32(data->mailled, ACER_CAP_MAILLED);
1189
1190 if (has_cap(ACER_CAP_BRIGHTNESS))
1191 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1192
1193 return 0;
1194}
1195
1196static struct platform_driver acer_platform_driver = {
1197 .driver = {
1198 .name = "acer-wmi",
1199 .owner = THIS_MODULE,
1200 },
1201 .probe = acer_platform_probe,
1202 .remove = acer_platform_remove,
1203 .suspend = acer_platform_suspend,
1204 .resume = acer_platform_resume,
1205};
1206
1207static struct platform_device *acer_platform_device;
1208
1209static int remove_sysfs(struct platform_device *device)
1210{
745a5d21
CC		 1211 if (has_cap(ACER_CAP_THREEG))
1212 device_remove_file(&device->dev, &dev_attr_threeg);
1213
1214 device_remove_file(&device->dev, &dev_attr_interface);
1215
1216 return 0;
1217}
1218
1219static int create_sysfs(void)
1220{
1221 int retval = -ENOMEM;
1222
745a5d21
CC		 1223 if (has_cap(ACER_CAP_THREEG)) {
1224 retval = device_create_file(&acer_platform_device->dev,
1225 &dev_attr_threeg);
1226 if (retval)
1227 goto error_sysfs;
1228 }
1229
1230 retval = device_create_file(&acer_platform_device->dev,
1231 &dev_attr_interface);
1232 if (retval)
1233 goto error_sysfs;
1234
1235 return 0;
1236
1237error_sysfs:
1238 remove_sysfs(acer_platform_device);
1239 return retval;
1240}
1241
81143522
CC		 1242static void remove_debugfs(void)
1243{
1244 debugfs_remove(interface->debug.devices);
1245 debugfs_remove(interface->debug.root);
1246}
1247
1248static int create_debugfs(void)
1249{
1250 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1251 if (!interface->debug.root) {
1252 printk(ACER_ERR "Failed to create debugfs directory");
1253 return -ENOMEM;
1254 }
1255
1256 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1257 interface->debug.root,
1258 &interface->debug.wmid_devices);
1259 if (!interface->debug.devices)
1260 goto error_debugfs;
1261
1262 return 0;
1263
1264error_debugfs:
39dbbb45 1265 remove_debugfs();
81143522
CC		 1266 return -ENOMEM;
1267}
1268
745a5d21
CC		 1269static int __init acer_wmi_init(void)
1270{
1271 int err;
1272
860f0c6b 1273 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
745a5d21 1274
a74dd5fd
CC		 1275 if (dmi_check_system(acer_blacklist)) {
1276 printk(ACER_INFO "Blacklisted hardware detected - "
1277 "not loading\n");
1278 return -ENODEV;
1279 }
1280
9991d9f2
CC		 1281 find_quirks();
1282
745a5d21
CC		 1283 /*
1284 * Detect which ACPI-WMI interface we're using.
1285 */
1286 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1287 interface = &AMW0_V2_interface;
1288
1289 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1290 interface = &wmid_interface;
1291
1292 if (wmi_has_guid(WMID_GUID2) && interface) {
1293 if (ACPI_FAILURE(WMID_set_capabilities())) {
8d039bc7
CC		 1294 printk(ACER_ERR "Unable to detect available WMID "
1295 "devices\n");
745a5d21
CC		 1296 return -ENODEV;
1297 }
1298 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
8d039bc7 1299 printk(ACER_ERR "No WMID device detection method found\n");
745a5d21
CC		 1300 return -ENODEV;
1301 }
1302
1303 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1304 interface = &AMW0_interface;
1305
1306 if (ACPI_FAILURE(AMW0_set_capabilities())) {
8d039bc7
CC		 1307 printk(ACER_ERR "Unable to detect available AMW0 "
1308 "devices\n");
745a5d21
CC		 1309 return -ENODEV;
1310 }
1311 }
1312
9b963c40
CC		 1313 if (wmi_has_guid(AMW0_GUID1))
1314 AMW0_find_mailled();
745a5d21 1315
745a5d21 1316 if (!interface) {
8d039bc7
CC		 1317 printk(ACER_ERR "No or unsupported WMI interface, unable to "
1318 "load\n");
745a5d21
CC		 1319 return -ENODEV;
1320 }
1321
83097aca
AV		 1322 set_quirks();
1323
1ba869ec 1324 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
febf2d95
TR		 1325 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1326 printk(ACER_INFO "Brightness must be controlled by "
1327 "generic video driver\n");
1328 }
1329
745a5d21
CC		 1330 if (platform_driver_register(&acer_platform_driver)) {
1331 printk(ACER_ERR "Unable to register platform driver.\n");
1332 goto error_platform_register;
1333 }
1334 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1335 platform_device_add(acer_platform_device);
1336
1337 err = create_sysfs();
1338 if (err)
1339 return err;
1340
81143522
CC		 1341 if (wmi_has_guid(WMID_GUID2)) {
1342 interface->debug.wmid_devices = get_wmid_devices();
1343 err = create_debugfs();
1344 if (err)
1345 return err;
1346 }
1347
745a5d21
CC		 1348 /* Override any initial settings with values from the commandline */
1349 acer_commandline_init();
1350
1351 return 0;
1352
1353error_platform_register:
1354 return -ENODEV;
1355}
1356
1357static void __exit acer_wmi_exit(void)
1358{
1359 remove_sysfs(acer_platform_device);
39dbbb45 1360 remove_debugfs();
745a5d21
CC		 1361 platform_device_del(acer_platform_device);
1362 platform_driver_unregister(&acer_platform_driver);
1363
1364 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1365 return;
1366}
1367
1368module_init(acer_wmi_init);
1369module_exit(acer_wmi_exit);
Linux 6.x block layer and io_uring tree(s)