089db868799ee0887328bd0b9a89667af51fc379
[linux-2.6.git] / drivers / platform / x86 / acer-wmi.c
1 /*
2  *  Acer WMI Laptop Extras
3  *
4  *  Copyright (C) 2007-2009     Carlos Corbacho <carlos@strangeworlds.co.uk>
5  *
6  *  Based on acer_acpi:
7  *    Copyright (C) 2005-2007   E.M. Smith
8  *    Copyright (C) 2007-2008   Carlos Corbacho <cathectic@gmail.com>
9  *
10  *  This program is free software; you can redistribute it and/or modify
11  *  it under the terms of the GNU General Public License as published by
12  *  the Free Software Foundation; either version 2 of the License, or
13  *  (at your option) any later version.
14  *
15  *  This program is distributed in the hope that it will be useful,
16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  *  GNU General Public License for more details.
19  *
20  *  You should have received a copy of the GNU General Public License
21  *  along with this program; if not, write to the Free Software
22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
23  */
24
25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/types.h>
31 #include <linux/dmi.h>
32 #include <linux/fb.h>
33 #include <linux/backlight.h>
34 #include <linux/leds.h>
35 #include <linux/platform_device.h>
36 #include <linux/acpi.h>
37 #include <linux/i8042.h>
38 #include <linux/rfkill.h>
39 #include <linux/workqueue.h>
40 #include <linux/debugfs.h>
41 #include <linux/slab.h>
42 #include <linux/input.h>
43 #include <linux/input/sparse-keymap.h>
44
45 #include <acpi/acpi_drivers.h>
46
47 MODULE_AUTHOR("Carlos Corbacho");
48 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
49 MODULE_LICENSE("GPL");
50
51 /*
52  * Magic Number
53  * Meaning is unknown - this number is required for writing to ACPI for AMW0
54  * (it's also used in acerhk when directly accessing the BIOS)
55  */
56 #define ACER_AMW0_WRITE 0x9610
57
58 /*
59  * Bit masks for the AMW0 interface
60  */
61 #define ACER_AMW0_WIRELESS_MASK  0x35
62 #define ACER_AMW0_BLUETOOTH_MASK 0x34
63 #define ACER_AMW0_MAILLED_MASK   0x31
64
65 /*
66  * Method IDs for WMID interface
67  */
68 #define ACER_WMID_GET_WIRELESS_METHODID         1
69 #define ACER_WMID_GET_BLUETOOTH_METHODID        2
70 #define ACER_WMID_GET_BRIGHTNESS_METHODID       3
71 #define ACER_WMID_SET_WIRELESS_METHODID         4
72 #define ACER_WMID_SET_BLUETOOTH_METHODID        5
73 #define ACER_WMID_SET_BRIGHTNESS_METHODID       6
74 #define ACER_WMID_GET_THREEG_METHODID           10
75 #define ACER_WMID_SET_THREEG_METHODID           11
76
77 /*
78  * Acer ACPI method GUIDs
79  */
80 #define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
81 #define AMW0_GUID2              "431F16ED-0C2B-444C-B267-27DEB140CF9C"
82 #define WMID_GUID1              "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
83 #define WMID_GUID2              "95764E09-FB56-4E83-B31A-37761F60994A"
84 #define WMID_GUID3              "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
85
86 /*
87  * Acer ACPI event GUIDs
88  */
89 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
90
91 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
92 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
93 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
94
95 enum acer_wmi_event_ids {
96         WMID_HOTKEY_EVENT = 0x1,
97 };
98
99 static const struct key_entry acer_wmi_keymap[] = {
100         {KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
101         {KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
102         {KE_KEY, 0x12, {KEY_BLUETOOTH} },       /* BT */
103         {KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
104         {KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
105         {KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
106         {KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
107         {KE_IGNORE, 0x41, {KEY_MUTE} },
108         {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
109         {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
110         {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
111         {KE_IGNORE, 0x45, {KEY_STOP} },
112         {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
113         {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
114         {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
115         {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
116         {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
117         {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
118         {KE_IGNORE, 0x81, {KEY_SLEEP} },
119         {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
120         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
121         {KE_END, 0}
122 };
123
124 static struct input_dev *acer_wmi_input_dev;
125
126 struct event_return_value {
127         u8 function;
128         u8 key_num;
129         u16 device_state;
130         u32 reserved;
131 } __attribute__((packed));
132
133 /*
134  * GUID3 Get Device Status device flags
135  */
136 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
137 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
138 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
139 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
140
141 struct lm_input_params {
142         u8 function_num;        /* Function Number */
143         u16 commun_devices;     /* Communication type devices default status */
144         u16 devices;            /* Other type devices default status */
145         u8 lm_status;           /* Launch Manager Status */
146         u16 reserved;
147 } __attribute__((packed));
148
149 struct lm_return_value {
150         u8 error_code;          /* Error Code */
151         u8 ec_return_value;     /* EC Return Value */
152         u16 reserved;
153 } __attribute__((packed));
154
155 struct wmid3_gds_input_param {  /* Get Device Status input parameter */
156         u8 function_num;        /* Function Number */
157         u8 hotkey_number;       /* Hotkey Number */
158         u16 devices;            /* Get Device */
159 } __attribute__((packed));
160
161 struct wmid3_gds_return_value { /* Get Device Status return value*/
162         u8 error_code;          /* Error Code */
163         u8 ec_return_value;     /* EC Return Value */
164         u16 devices;            /* Current Device Status */
165         u32 reserved;
166 } __attribute__((packed));
167
168 struct hotkey_function_type_aa {
169         u8 type;
170         u8 length;
171         u16 handle;
172         u16 commun_func_bitmap;
173 } __attribute__((packed));
174
175 /*
176  * Interface capability flags
177  */
178 #define ACER_CAP_MAILLED                (1<<0)
179 #define ACER_CAP_WIRELESS               (1<<1)
180 #define ACER_CAP_BLUETOOTH              (1<<2)
181 #define ACER_CAP_BRIGHTNESS             (1<<3)
182 #define ACER_CAP_THREEG                 (1<<4)
183 #define ACER_CAP_ANY                    (0xFFFFFFFF)
184
185 /*
186  * Interface type flags
187  */
188 enum interface_flags {
189         ACER_AMW0,
190         ACER_AMW0_V2,
191         ACER_WMID,
192 };
193
194 #define ACER_DEFAULT_WIRELESS  0
195 #define ACER_DEFAULT_BLUETOOTH 0
196 #define ACER_DEFAULT_MAILLED   0
197 #define ACER_DEFAULT_THREEG    0
198
199 static int max_brightness = 0xF;
200
201 static int mailled = -1;
202 static int brightness = -1;
203 static int threeg = -1;
204 static int force_series;
205 static bool ec_raw_mode;
206 static bool has_type_aa;
207
208 module_param(mailled, int, 0444);
209 module_param(brightness, int, 0444);
210 module_param(threeg, int, 0444);
211 module_param(force_series, int, 0444);
212 module_param(ec_raw_mode, bool, 0444);
213 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
214 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
215 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
216 MODULE_PARM_DESC(force_series, "Force a different laptop series");
217 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
218
219 struct acer_data {
220         int mailled;
221         int threeg;
222         int brightness;
223 };
224
225 struct acer_debug {
226         struct dentry *root;
227         struct dentry *devices;
228         u32 wmid_devices;
229 };
230
231 static struct rfkill *wireless_rfkill;
232 static struct rfkill *bluetooth_rfkill;
233 static struct rfkill *threeg_rfkill;
234 static bool rfkill_inited;
235
236 /* Each low-level interface must define at least some of the following */
237 struct wmi_interface {
238         /* The WMI device type */
239         u32 type;
240
241         /* The capabilities this interface provides */
242         u32 capability;
243
244         /* Private data for the current interface */
245         struct acer_data data;
246
247         /* debugfs entries associated with this interface */
248         struct acer_debug debug;
249 };
250
251 /* The static interface pointer, points to the currently detected interface */
252 static struct wmi_interface *interface;
253
254 /*
255  * Embedded Controller quirks
256  * Some laptops require us to directly access the EC to either enable or query
257  * features that are not available through WMI.
258  */
259
260 struct quirk_entry {
261         u8 wireless;
262         u8 mailled;
263         s8 brightness;
264         u8 bluetooth;
265 };
266
267 static struct quirk_entry *quirks;
268
269 static void set_quirks(void)
270 {
271         if (!interface)
272                 return;
273
274         if (quirks->mailled)
275                 interface->capability |= ACER_CAP_MAILLED;
276
277         if (quirks->brightness)
278                 interface->capability |= ACER_CAP_BRIGHTNESS;
279 }
280
281 static int dmi_matched(const struct dmi_system_id *dmi)
282 {
283         quirks = dmi->driver_data;
284         return 1;
285 }
286
287 static struct quirk_entry quirk_unknown = {
288 };
289
290 static struct quirk_entry quirk_acer_aspire_1520 = {
291         .brightness = -1,
292 };
293
294 static struct quirk_entry quirk_acer_travelmate_2490 = {
295         .mailled = 1,
296 };
297
298 /* This AMW0 laptop has no bluetooth */
299 static struct quirk_entry quirk_medion_md_98300 = {
300         .wireless = 1,
301 };
302
303 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
304         .wireless = 2,
305 };
306
307 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
308 static struct dmi_system_id __devinitdata acer_blacklist[] = {
309         {
310                 .ident = "Acer Aspire One (SSD)",
311                 .matches = {
312                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
313                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
314                 },
315         },
316         {
317                 .ident = "Acer Aspire One (HDD)",
318                 .matches = {
319                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
320                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
321                 },
322         },
323         {}
324 };
325
326 static struct dmi_system_id acer_quirks[] = {
327         {
328                 .callback = dmi_matched,
329                 .ident = "Acer Aspire 1360",
330                 .matches = {
331                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
332                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
333                 },
334                 .driver_data = &quirk_acer_aspire_1520,
335         },
336         {
337                 .callback = dmi_matched,
338                 .ident = "Acer Aspire 1520",
339                 .matches = {
340                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
341                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
342                 },
343                 .driver_data = &quirk_acer_aspire_1520,
344         },
345         {
346                 .callback = dmi_matched,
347                 .ident = "Acer Aspire 3100",
348                 .matches = {
349                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
350                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
351                 },
352                 .driver_data = &quirk_acer_travelmate_2490,
353         },
354         {
355                 .callback = dmi_matched,
356                 .ident = "Acer Aspire 3610",
357                 .matches = {
358                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
359                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
360                 },
361                 .driver_data = &quirk_acer_travelmate_2490,
362         },
363         {
364                 .callback = dmi_matched,
365                 .ident = "Acer Aspire 5100",
366                 .matches = {
367                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
368                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
369                 },
370                 .driver_data = &quirk_acer_travelmate_2490,
371         },
372         {
373                 .callback = dmi_matched,
374                 .ident = "Acer Aspire 5610",
375                 .matches = {
376                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
377                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
378                 },
379                 .driver_data = &quirk_acer_travelmate_2490,
380         },
381         {
382                 .callback = dmi_matched,
383                 .ident = "Acer Aspire 5630",
384                 .matches = {
385                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
386                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
387                 },
388                 .driver_data = &quirk_acer_travelmate_2490,
389         },
390         {
391                 .callback = dmi_matched,
392                 .ident = "Acer Aspire 5650",
393                 .matches = {
394                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
395                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
396                 },
397                 .driver_data = &quirk_acer_travelmate_2490,
398         },
399         {
400                 .callback = dmi_matched,
401                 .ident = "Acer Aspire 5680",
402                 .matches = {
403                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
404                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
405                 },
406                 .driver_data = &quirk_acer_travelmate_2490,
407         },
408         {
409                 .callback = dmi_matched,
410                 .ident = "Acer Aspire 9110",
411                 .matches = {
412                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
413                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
414                 },
415                 .driver_data = &quirk_acer_travelmate_2490,
416         },
417         {
418                 .callback = dmi_matched,
419                 .ident = "Acer TravelMate 2490",
420                 .matches = {
421                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
422                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
423                 },
424                 .driver_data = &quirk_acer_travelmate_2490,
425         },
426         {
427                 .callback = dmi_matched,
428                 .ident = "Acer TravelMate 4200",
429                 .matches = {
430                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
431                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
432                 },
433                 .driver_data = &quirk_acer_travelmate_2490,
434         },
435         {
436                 .callback = dmi_matched,
437                 .ident = "Fujitsu Siemens Amilo Li 1718",
438                 .matches = {
439                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
440                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
441                 },
442                 .driver_data = &quirk_fujitsu_amilo_li_1718,
443         },
444         {
445                 .callback = dmi_matched,
446                 .ident = "Medion MD 98300",
447                 .matches = {
448                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
449                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
450                 },
451                 .driver_data = &quirk_medion_md_98300,
452         },
453         {}
454 };
455
456 /* Find which quirks are needed for a particular vendor/ model pair */
457 static void find_quirks(void)
458 {
459         if (!force_series) {
460                 dmi_check_system(acer_quirks);
461         } else if (force_series == 2490) {
462                 quirks = &quirk_acer_travelmate_2490;
463         }
464
465         if (quirks == NULL)
466                 quirks = &quirk_unknown;
467
468         set_quirks();
469 }
470
471 /*
472  * General interface convenience methods
473  */
474
475 static bool has_cap(u32 cap)
476 {
477         if ((interface->capability & cap) != 0)
478                 return 1;
479
480         return 0;
481 }
482
483 /*
484  * AMW0 (V1) interface
485  */
486 struct wmab_args {
487         u32 eax;
488         u32 ebx;
489         u32 ecx;
490         u32 edx;
491 };
492
493 struct wmab_ret {
494         u32 eax;
495         u32 ebx;
496         u32 ecx;
497         u32 edx;
498         u32 eex;
499 };
500
501 static acpi_status wmab_execute(struct wmab_args *regbuf,
502 struct acpi_buffer *result)
503 {
504         struct acpi_buffer input;
505         acpi_status status;
506         input.length = sizeof(struct wmab_args);
507         input.pointer = (u8 *)regbuf;
508
509         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
510
511         return status;
512 }
513
514 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
515 struct wmi_interface *iface)
516 {
517         int err;
518         u8 result;
519
520         switch (cap) {
521         case ACER_CAP_MAILLED:
522                 switch (quirks->mailled) {
523                 default:
524                         err = ec_read(0xA, &result);
525                         if (err)
526                                 return AE_ERROR;
527                         *value = (result >> 7) & 0x1;
528                         return AE_OK;
529                 }
530                 break;
531         case ACER_CAP_WIRELESS:
532                 switch (quirks->wireless) {
533                 case 1:
534                         err = ec_read(0x7B, &result);
535                         if (err)
536                                 return AE_ERROR;
537                         *value = result & 0x1;
538                         return AE_OK;
539                 case 2:
540                         err = ec_read(0x71, &result);
541                         if (err)
542                                 return AE_ERROR;
543                         *value = result & 0x1;
544                         return AE_OK;
545                 default:
546                         err = ec_read(0xA, &result);
547                         if (err)
548                                 return AE_ERROR;
549                         *value = (result >> 2) & 0x1;
550                         return AE_OK;
551                 }
552                 break;
553         case ACER_CAP_BLUETOOTH:
554                 switch (quirks->bluetooth) {
555                 default:
556                         err = ec_read(0xA, &result);
557                         if (err)
558                                 return AE_ERROR;
559                         *value = (result >> 4) & 0x1;
560                         return AE_OK;
561                 }
562                 break;
563         case ACER_CAP_BRIGHTNESS:
564                 switch (quirks->brightness) {
565                 default:
566                         err = ec_read(0x83, &result);
567                         if (err)
568                                 return AE_ERROR;
569                         *value = result;
570                         return AE_OK;
571                 }
572                 break;
573         default:
574                 return AE_ERROR;
575         }
576         return AE_OK;
577 }
578
579 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
580 {
581         struct wmab_args args;
582
583         args.eax = ACER_AMW0_WRITE;
584         args.ebx = value ? (1<<8) : 0;
585         args.ecx = args.edx = 0;
586
587         switch (cap) {
588         case ACER_CAP_MAILLED:
589                 if (value > 1)
590                         return AE_BAD_PARAMETER;
591                 args.ebx |= ACER_AMW0_MAILLED_MASK;
592                 break;
593         case ACER_CAP_WIRELESS:
594                 if (value > 1)
595                         return AE_BAD_PARAMETER;
596                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
597                 break;
598         case ACER_CAP_BLUETOOTH:
599                 if (value > 1)
600                         return AE_BAD_PARAMETER;
601                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
602                 break;
603         case ACER_CAP_BRIGHTNESS:
604                 if (value > max_brightness)
605                         return AE_BAD_PARAMETER;
606                 switch (quirks->brightness) {
607                 default:
608                         return ec_write(0x83, value);
609                         break;
610                 }
611         default:
612                 return AE_ERROR;
613         }
614
615         /* Actually do the set */
616         return wmab_execute(&args, NULL);
617 }
618
619 static acpi_status AMW0_find_mailled(void)
620 {
621         struct wmab_args args;
622         struct wmab_ret ret;
623         acpi_status status = AE_OK;
624         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
625         union acpi_object *obj;
626
627         args.eax = 0x86;
628         args.ebx = args.ecx = args.edx = 0;
629
630         status = wmab_execute(&args, &out);
631         if (ACPI_FAILURE(status))
632                 return status;
633
634         obj = (union acpi_object *) out.pointer;
635         if (obj && obj->type == ACPI_TYPE_BUFFER &&
636         obj->buffer.length == sizeof(struct wmab_ret)) {
637                 ret = *((struct wmab_ret *) obj->buffer.pointer);
638         } else {
639                 kfree(out.pointer);
640                 return AE_ERROR;
641         }
642
643         if (ret.eex & 0x1)
644                 interface->capability |= ACER_CAP_MAILLED;
645
646         kfree(out.pointer);
647
648         return AE_OK;
649 }
650
651 static acpi_status AMW0_set_capabilities(void)
652 {
653         struct wmab_args args;
654         struct wmab_ret ret;
655         acpi_status status;
656         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
657         union acpi_object *obj;
658
659         /*
660          * On laptops with this strange GUID (non Acer), normal probing doesn't
661          * work.
662          */
663         if (wmi_has_guid(AMW0_GUID2)) {
664                 interface->capability |= ACER_CAP_WIRELESS;
665                 return AE_OK;
666         }
667
668         args.eax = ACER_AMW0_WRITE;
669         args.ecx = args.edx = 0;
670
671         args.ebx = 0xa2 << 8;
672         args.ebx |= ACER_AMW0_WIRELESS_MASK;
673
674         status = wmab_execute(&args, &out);
675         if (ACPI_FAILURE(status))
676                 return status;
677
678         obj = out.pointer;
679         if (obj && obj->type == ACPI_TYPE_BUFFER &&
680         obj->buffer.length == sizeof(struct wmab_ret)) {
681                 ret = *((struct wmab_ret *) obj->buffer.pointer);
682         } else {
683                 status = AE_ERROR;
684                 goto out;
685         }
686
687         if (ret.eax & 0x1)
688                 interface->capability |= ACER_CAP_WIRELESS;
689
690         args.ebx = 2 << 8;
691         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
692
693         /*
694          * It's ok to use existing buffer for next wmab_execute call.
695          * But we need to kfree(out.pointer) if next wmab_execute fail.
696          */
697         status = wmab_execute(&args, &out);
698         if (ACPI_FAILURE(status))
699                 goto out;
700
701         obj = (union acpi_object *) out.pointer;
702         if (obj && obj->type == ACPI_TYPE_BUFFER
703         && obj->buffer.length == sizeof(struct wmab_ret)) {
704                 ret = *((struct wmab_ret *) obj->buffer.pointer);
705         } else {
706                 status = AE_ERROR;
707                 goto out;
708         }
709
710         if (ret.eax & 0x1)
711                 interface->capability |= ACER_CAP_BLUETOOTH;
712
713         /*
714          * This appears to be safe to enable, since all Wistron based laptops
715          * appear to use the same EC register for brightness, even if they
716          * differ for wireless, etc
717          */
718         if (quirks->brightness >= 0)
719                 interface->capability |= ACER_CAP_BRIGHTNESS;
720
721         status = AE_OK;
722 out:
723         kfree(out.pointer);
724         return status;
725 }
726
727 static struct wmi_interface AMW0_interface = {
728         .type = ACER_AMW0,
729 };
730
731 static struct wmi_interface AMW0_V2_interface = {
732         .type = ACER_AMW0_V2,
733 };
734
735 /*
736  * New interface (The WMID interface)
737  */
738 static acpi_status
739 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
740 {
741         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
742         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
743         union acpi_object *obj;
744         u32 tmp;
745         acpi_status status;
746
747         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
748
749         if (ACPI_FAILURE(status))
750                 return status;
751
752         obj = (union acpi_object *) result.pointer;
753         if (obj && obj->type == ACPI_TYPE_BUFFER &&
754                 (obj->buffer.length == sizeof(u32) ||
755                 obj->buffer.length == sizeof(u64))) {
756                 tmp = *((u32 *) obj->buffer.pointer);
757         } else if (obj->type == ACPI_TYPE_INTEGER) {
758                 tmp = (u32) obj->integer.value;
759         } else {
760                 tmp = 0;
761         }
762
763         if (out)
764                 *out = tmp;
765
766         kfree(result.pointer);
767
768         return status;
769 }
770
771 static acpi_status WMID_get_u32(u32 *value, u32 cap,
772 struct wmi_interface *iface)
773 {
774         acpi_status status;
775         u8 tmp;
776         u32 result, method_id = 0;
777
778         switch (cap) {
779         case ACER_CAP_WIRELESS:
780                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
781                 break;
782         case ACER_CAP_BLUETOOTH:
783                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
784                 break;
785         case ACER_CAP_BRIGHTNESS:
786                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
787                 break;
788         case ACER_CAP_THREEG:
789                 method_id = ACER_WMID_GET_THREEG_METHODID;
790                 break;
791         case ACER_CAP_MAILLED:
792                 if (quirks->mailled == 1) {
793                         ec_read(0x9f, &tmp);
794                         *value = tmp & 0x1;
795                         return 0;
796                 }
797         default:
798                 return AE_ERROR;
799         }
800         status = WMI_execute_u32(method_id, 0, &result);
801
802         if (ACPI_SUCCESS(status))
803                 *value = (u8)result;
804
805         return status;
806 }
807
808 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
809 {
810         u32 method_id = 0;
811         char param;
812
813         switch (cap) {
814         case ACER_CAP_BRIGHTNESS:
815                 if (value > max_brightness)
816                         return AE_BAD_PARAMETER;
817                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
818                 break;
819         case ACER_CAP_WIRELESS:
820                 if (value > 1)
821                         return AE_BAD_PARAMETER;
822                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
823                 break;
824         case ACER_CAP_BLUETOOTH:
825                 if (value > 1)
826                         return AE_BAD_PARAMETER;
827                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
828                 break;
829         case ACER_CAP_THREEG:
830                 if (value > 1)
831                         return AE_BAD_PARAMETER;
832                 method_id = ACER_WMID_SET_THREEG_METHODID;
833                 break;
834         case ACER_CAP_MAILLED:
835                 if (value > 1)
836                         return AE_BAD_PARAMETER;
837                 if (quirks->mailled == 1) {
838                         param = value ? 0x92 : 0x93;
839                         i8042_lock_chip();
840                         i8042_command(&param, 0x1059);
841                         i8042_unlock_chip();
842                         return 0;
843                 }
844                 break;
845         default:
846                 return AE_ERROR;
847         }
848         return WMI_execute_u32(method_id, (u32)value, NULL);
849 }
850
851 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
852 {
853         struct hotkey_function_type_aa *type_aa;
854
855         /* We are looking for OEM-specific Type AAh */
856         if (header->type != 0xAA)
857                 return;
858
859         has_type_aa = true;
860         type_aa = (struct hotkey_function_type_aa *) header;
861
862         pr_info("Function bitmap for Communication Button: 0x%x\n",
863                 type_aa->commun_func_bitmap);
864
865         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
866                 interface->capability |= ACER_CAP_WIRELESS;
867         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
868                 interface->capability |= ACER_CAP_THREEG;
869         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
870                 interface->capability |= ACER_CAP_BLUETOOTH;
871 }
872
873 static acpi_status WMID_set_capabilities(void)
874 {
875         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
876         union acpi_object *obj;
877         acpi_status status;
878         u32 devices;
879
880         status = wmi_query_block(WMID_GUID2, 1, &out);
881         if (ACPI_FAILURE(status))
882                 return status;
883
884         obj = (union acpi_object *) out.pointer;
885         if (obj && obj->type == ACPI_TYPE_BUFFER &&
886                 (obj->buffer.length == sizeof(u32) ||
887                 obj->buffer.length == sizeof(u64))) {
888                 devices = *((u32 *) obj->buffer.pointer);
889         } else if (obj->type == ACPI_TYPE_INTEGER) {
890                 devices = (u32) obj->integer.value;
891         } else {
892                 kfree(out.pointer);
893                 return AE_ERROR;
894         }
895
896         dmi_walk(type_aa_dmi_decode, NULL);
897         if (!has_type_aa) {
898                 interface->capability |= ACER_CAP_WIRELESS;
899                 if (devices & 0x40)
900                         interface->capability |= ACER_CAP_THREEG;
901                 if (devices & 0x10)
902                         interface->capability |= ACER_CAP_BLUETOOTH;
903         }
904
905         /* WMID always provides brightness methods */
906         interface->capability |= ACER_CAP_BRIGHTNESS;
907
908         if (!(devices & 0x20))
909                 max_brightness = 0x9;
910
911         kfree(out.pointer);
912         return status;
913 }
914
915 static struct wmi_interface wmid_interface = {
916         .type = ACER_WMID,
917 };
918
919 /*
920  * Generic Device (interface-independent)
921  */
922
923 static acpi_status get_u32(u32 *value, u32 cap)
924 {
925         acpi_status status = AE_ERROR;
926
927         switch (interface->type) {
928         case ACER_AMW0:
929                 status = AMW0_get_u32(value, cap, interface);
930                 break;
931         case ACER_AMW0_V2:
932                 if (cap == ACER_CAP_MAILLED) {
933                         status = AMW0_get_u32(value, cap, interface);
934                         break;
935                 }
936         case ACER_WMID:
937                 status = WMID_get_u32(value, cap, interface);
938                 break;
939         }
940
941         return status;
942 }
943
944 static acpi_status set_u32(u32 value, u32 cap)
945 {
946         acpi_status status;
947
948         if (interface->capability & cap) {
949                 switch (interface->type) {
950                 case ACER_AMW0:
951                         return AMW0_set_u32(value, cap, interface);
952                 case ACER_AMW0_V2:
953                         if (cap == ACER_CAP_MAILLED)
954                                 return AMW0_set_u32(value, cap, interface);
955
956                         /*
957                          * On some models, some WMID methods don't toggle
958                          * properly. For those cases, we want to run the AMW0
959                          * method afterwards to be certain we've really toggled
960                          * the device state.
961                          */
962                         if (cap == ACER_CAP_WIRELESS ||
963                                 cap == ACER_CAP_BLUETOOTH) {
964                                 status = WMID_set_u32(value, cap, interface);
965                                 if (ACPI_FAILURE(status))
966                                         return status;
967
968                                 return AMW0_set_u32(value, cap, interface);
969                         }
970                 case ACER_WMID:
971                         return WMID_set_u32(value, cap, interface);
972                 default:
973                         return AE_BAD_PARAMETER;
974                 }
975         }
976         return AE_BAD_PARAMETER;
977 }
978
979 static void __init acer_commandline_init(void)
980 {
981         /*
982          * These will all fail silently if the value given is invalid, or the
983          * capability isn't available on the given interface
984          */
985         if (mailled >= 0)
986                 set_u32(mailled, ACER_CAP_MAILLED);
987         if (!has_type_aa && threeg >= 0)
988                 set_u32(threeg, ACER_CAP_THREEG);
989         if (brightness >= 0)
990                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
991 }
992
993 /*
994  * LED device (Mail LED only, no other LEDs known yet)
995  */
996 static void mail_led_set(struct led_classdev *led_cdev,
997 enum led_brightness value)
998 {
999         set_u32(value, ACER_CAP_MAILLED);
1000 }
1001
1002 static struct led_classdev mail_led = {
1003         .name = "acer-wmi::mail",
1004         .brightness_set = mail_led_set,
1005 };
1006
1007 static int __devinit acer_led_init(struct device *dev)
1008 {
1009         return led_classdev_register(dev, &mail_led);
1010 }
1011
1012 static void acer_led_exit(void)
1013 {
1014         set_u32(LED_OFF, ACER_CAP_MAILLED);
1015         led_classdev_unregister(&mail_led);
1016 }
1017
1018 /*
1019  * Backlight device
1020  */
1021 static struct backlight_device *acer_backlight_device;
1022
1023 static int read_brightness(struct backlight_device *bd)
1024 {
1025         u32 value;
1026         get_u32(&value, ACER_CAP_BRIGHTNESS);
1027         return value;
1028 }
1029
1030 static int update_bl_status(struct backlight_device *bd)
1031 {
1032         int intensity = bd->props.brightness;
1033
1034         if (bd->props.power != FB_BLANK_UNBLANK)
1035                 intensity = 0;
1036         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1037                 intensity = 0;
1038
1039         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1040
1041         return 0;
1042 }
1043
1044 static const struct backlight_ops acer_bl_ops = {
1045         .get_brightness = read_brightness,
1046         .update_status = update_bl_status,
1047 };
1048
1049 static int __devinit acer_backlight_init(struct device *dev)
1050 {
1051         struct backlight_properties props;
1052         struct backlight_device *bd;
1053
1054         memset(&props, 0, sizeof(struct backlight_properties));
1055         props.type = BACKLIGHT_PLATFORM;
1056         props.max_brightness = max_brightness;
1057         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1058                                        &props);
1059         if (IS_ERR(bd)) {
1060                 pr_err("Could not register Acer backlight device\n");
1061                 acer_backlight_device = NULL;
1062                 return PTR_ERR(bd);
1063         }
1064
1065         acer_backlight_device = bd;
1066
1067         bd->props.power = FB_BLANK_UNBLANK;
1068         bd->props.brightness = read_brightness(bd);
1069         backlight_update_status(bd);
1070         return 0;
1071 }
1072
1073 static void acer_backlight_exit(void)
1074 {
1075         backlight_device_unregister(acer_backlight_device);
1076 }
1077
1078 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1079 {
1080         struct wmid3_gds_return_value return_value;
1081         acpi_status status;
1082         union acpi_object *obj;
1083         struct wmid3_gds_input_param params = {
1084                 .function_num = 0x1,
1085                 .hotkey_number = 0x01,
1086                 .devices = device,
1087         };
1088         struct acpi_buffer input = {
1089                 sizeof(struct wmid3_gds_input_param),
1090                 &params
1091         };
1092         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1093
1094         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1095         if (ACPI_FAILURE(status))
1096                 return status;
1097
1098         obj = output.pointer;
1099
1100         if (!obj)
1101                 return AE_ERROR;
1102         else if (obj->type != ACPI_TYPE_BUFFER) {
1103                 kfree(obj);
1104                 return AE_ERROR;
1105         }
1106         if (obj->buffer.length != 8) {
1107                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1108                 kfree(obj);
1109                 return AE_ERROR;
1110         }
1111
1112         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1113         kfree(obj);
1114
1115         if (return_value.error_code || return_value.ec_return_value)
1116                 pr_warn("Get Device Status failed: 0x%x - 0x%x\n",
1117                         return_value.error_code,
1118                         return_value.ec_return_value);
1119         else
1120                 *value = !!(return_value.devices & device);
1121
1122         return status;
1123 }
1124
1125 static acpi_status get_device_status(u32 *value, u32 cap)
1126 {
1127         if (wmi_has_guid(WMID_GUID3)) {
1128                 u16 device;
1129
1130                 switch (cap) {
1131                 case ACER_CAP_WIRELESS:
1132                         device = ACER_WMID3_GDS_WIRELESS;
1133                         break;
1134                 case ACER_CAP_BLUETOOTH:
1135                         device = ACER_WMID3_GDS_BLUETOOTH;
1136                         break;
1137                 case ACER_CAP_THREEG:
1138                         device = ACER_WMID3_GDS_THREEG;
1139                         break;
1140                 default:
1141                         return AE_ERROR;
1142                 }
1143                 return wmid3_get_device_status(value, device);
1144
1145         } else {
1146                 return get_u32(value, cap);
1147         }
1148 }
1149
1150 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1151 {
1152         struct wmid3_gds_return_value return_value;
1153         acpi_status status;
1154         union acpi_object *obj;
1155         u16 devices;
1156         struct wmid3_gds_input_param params = {
1157                 .function_num = 0x1,
1158                 .hotkey_number = 0x01,
1159                 .devices = ACER_WMID3_GDS_WIRELESS |
1160                                 ACER_WMID3_GDS_THREEG |
1161                                 ACER_WMID3_GDS_WIMAX |
1162                                 ACER_WMID3_GDS_BLUETOOTH,
1163         };
1164         struct acpi_buffer input = {
1165                 sizeof(struct wmid3_gds_input_param),
1166                 &params
1167         };
1168         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1169         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1170
1171         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1172         if (ACPI_FAILURE(status))
1173                 return status;
1174
1175         obj = output.pointer;
1176
1177         if (!obj)
1178                 return AE_ERROR;
1179         else if (obj->type != ACPI_TYPE_BUFFER) {
1180                 kfree(obj);
1181                 return AE_ERROR;
1182         }
1183         if (obj->buffer.length != 8) {
1184                 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1185                 kfree(obj);
1186                 return AE_ERROR;
1187         }
1188
1189         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1190         kfree(obj);
1191
1192         if (return_value.error_code || return_value.ec_return_value) {
1193                 pr_warning("Get Current Device Status failed: "
1194                         "0x%x - 0x%x\n", return_value.error_code,
1195                         return_value.ec_return_value);
1196                 return status;
1197         }
1198
1199         devices = return_value.devices;
1200         params.function_num = 0x2;
1201         params.hotkey_number = 0x01;
1202         params.devices = (value) ? (devices | device) : (devices & ~device);
1203
1204         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
1205         if (ACPI_FAILURE(status))
1206                 return status;
1207
1208         obj = output2.pointer;
1209
1210         if (!obj)
1211                 return AE_ERROR;
1212         else if (obj->type != ACPI_TYPE_BUFFER) {
1213                 kfree(obj);
1214                 return AE_ERROR;
1215         }
1216         if (obj->buffer.length != 4) {
1217                 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1218                 kfree(obj);
1219                 return AE_ERROR;
1220         }
1221
1222         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1223         kfree(obj);
1224
1225         if (return_value.error_code || return_value.ec_return_value)
1226                 pr_warning("Set Device Status failed: "
1227                         "0x%x - 0x%x\n", return_value.error_code,
1228                         return_value.ec_return_value);
1229
1230         return status;
1231 }
1232
1233 static acpi_status set_device_status(u32 value, u32 cap)
1234 {
1235         if (wmi_has_guid(WMID_GUID3)) {
1236                 u16 device;
1237
1238                 switch (cap) {
1239                 case ACER_CAP_WIRELESS:
1240                         device = ACER_WMID3_GDS_WIRELESS;
1241                         break;
1242                 case ACER_CAP_BLUETOOTH:
1243                         device = ACER_WMID3_GDS_BLUETOOTH;
1244                         break;
1245                 case ACER_CAP_THREEG:
1246                         device = ACER_WMID3_GDS_THREEG;
1247                         break;
1248                 default:
1249                         return AE_ERROR;
1250                 }
1251                 return wmid3_set_device_status(value, device);
1252
1253         } else {
1254                 return set_u32(value, cap);
1255         }
1256 }
1257
1258 /*
1259  * Rfkill devices
1260  */
1261 static void acer_rfkill_update(struct work_struct *ignored);
1262 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1263 static void acer_rfkill_update(struct work_struct *ignored)
1264 {
1265         u32 state;
1266         acpi_status status;
1267
1268         status = get_u32(&state, ACER_CAP_WIRELESS);
1269         if (ACPI_SUCCESS(status))
1270                 rfkill_set_sw_state(wireless_rfkill, !state);
1271
1272         if (has_cap(ACER_CAP_BLUETOOTH)) {
1273                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1274                 if (ACPI_SUCCESS(status))
1275                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1276         }
1277
1278         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1279                 status = wmid3_get_device_status(&state,
1280                                 ACER_WMID3_GDS_THREEG);
1281                 if (ACPI_SUCCESS(status))
1282                         rfkill_set_sw_state(threeg_rfkill, !state);
1283         }
1284
1285         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1286 }
1287
1288 static int acer_rfkill_set(void *data, bool blocked)
1289 {
1290         acpi_status status;
1291         u32 cap = (unsigned long)data;
1292
1293         if (rfkill_inited) {
1294                 status = set_device_status(!blocked, cap);
1295                 if (ACPI_FAILURE(status))
1296                         return -ENODEV;
1297         }
1298
1299         return 0;
1300 }
1301
1302 static const struct rfkill_ops acer_rfkill_ops = {
1303         .set_block = acer_rfkill_set,
1304 };
1305
1306 static struct rfkill *acer_rfkill_register(struct device *dev,
1307                                            enum rfkill_type type,
1308                                            char *name, u32 cap)
1309 {
1310         int err;
1311         struct rfkill *rfkill_dev;
1312         u32 state;
1313         acpi_status status;
1314
1315         rfkill_dev = rfkill_alloc(name, dev, type,
1316                                   &acer_rfkill_ops,
1317                                   (void *)(unsigned long)cap);
1318         if (!rfkill_dev)
1319                 return ERR_PTR(-ENOMEM);
1320
1321         status = get_device_status(&state, cap);
1322
1323         err = rfkill_register(rfkill_dev);
1324         if (err) {
1325                 rfkill_destroy(rfkill_dev);
1326                 return ERR_PTR(err);
1327         }
1328
1329         if (ACPI_SUCCESS(status))
1330                 rfkill_set_sw_state(rfkill_dev, !state);
1331
1332         return rfkill_dev;
1333 }
1334
1335 static int acer_rfkill_init(struct device *dev)
1336 {
1337         wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1338                 "acer-wireless", ACER_CAP_WIRELESS);
1339         if (IS_ERR(wireless_rfkill))
1340                 return PTR_ERR(wireless_rfkill);
1341
1342         if (has_cap(ACER_CAP_BLUETOOTH)) {
1343                 bluetooth_rfkill = acer_rfkill_register(dev,
1344                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1345                         ACER_CAP_BLUETOOTH);
1346                 if (IS_ERR(bluetooth_rfkill)) {
1347                         rfkill_unregister(wireless_rfkill);
1348                         rfkill_destroy(wireless_rfkill);
1349                         return PTR_ERR(bluetooth_rfkill);
1350                 }
1351         }
1352
1353         if (has_cap(ACER_CAP_THREEG)) {
1354                 threeg_rfkill = acer_rfkill_register(dev,
1355                         RFKILL_TYPE_WWAN, "acer-threeg",
1356                         ACER_CAP_THREEG);
1357                 if (IS_ERR(threeg_rfkill)) {
1358                         rfkill_unregister(wireless_rfkill);
1359                         rfkill_destroy(wireless_rfkill);
1360                         rfkill_unregister(bluetooth_rfkill);
1361                         rfkill_destroy(bluetooth_rfkill);
1362                         return PTR_ERR(threeg_rfkill);
1363                 }
1364         }
1365
1366         rfkill_inited = true;
1367
1368         if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1369                 schedule_delayed_work(&acer_rfkill_work,
1370                         round_jiffies_relative(HZ));
1371
1372         return 0;
1373 }
1374
1375 static void acer_rfkill_exit(void)
1376 {
1377         if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1378                 cancel_delayed_work_sync(&acer_rfkill_work);
1379
1380         rfkill_unregister(wireless_rfkill);
1381         rfkill_destroy(wireless_rfkill);
1382
1383         if (has_cap(ACER_CAP_BLUETOOTH)) {
1384                 rfkill_unregister(bluetooth_rfkill);
1385                 rfkill_destroy(bluetooth_rfkill);
1386         }
1387
1388         if (has_cap(ACER_CAP_THREEG)) {
1389                 rfkill_unregister(threeg_rfkill);
1390                 rfkill_destroy(threeg_rfkill);
1391         }
1392         return;
1393 }
1394
1395 /*
1396  * sysfs interface
1397  */
1398 static ssize_t show_bool_threeg(struct device *dev,
1399         struct device_attribute *attr, char *buf)
1400 {
1401         u32 result; \
1402         acpi_status status;
1403
1404         pr_info("This threeg sysfs will be removed in 2012"
1405                 " - used by: %s\n", current->comm);
1406         if (wmi_has_guid(WMID_GUID3))
1407                 status = wmid3_get_device_status(&result,
1408                                 ACER_WMID3_GDS_THREEG);
1409         else
1410                 status = get_u32(&result, ACER_CAP_THREEG);
1411         if (ACPI_SUCCESS(status))
1412                 return sprintf(buf, "%u\n", result);
1413         return sprintf(buf, "Read error\n");
1414 }
1415
1416 static ssize_t set_bool_threeg(struct device *dev,
1417         struct device_attribute *attr, const char *buf, size_t count)
1418 {
1419         u32 tmp = simple_strtoul(buf, NULL, 10);
1420         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1421         pr_info("This threeg sysfs will be removed in 2012"
1422                 " - used by: %s\n", current->comm);
1423         if (ACPI_FAILURE(status))
1424                 return -EINVAL;
1425         return count;
1426 }
1427 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1428         set_bool_threeg);
1429
1430 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1431         char *buf)
1432 {
1433         pr_info("This interface sysfs will be removed in 2012"
1434                 " - used by: %s\n", current->comm);
1435         switch (interface->type) {
1436         case ACER_AMW0:
1437                 return sprintf(buf, "AMW0\n");
1438         case ACER_AMW0_V2:
1439                 return sprintf(buf, "AMW0 v2\n");
1440         case ACER_WMID:
1441                 return sprintf(buf, "WMID\n");
1442         default:
1443                 return sprintf(buf, "Error!\n");
1444         }
1445 }
1446
1447 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1448
1449 static void acer_wmi_notify(u32 value, void *context)
1450 {
1451         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1452         union acpi_object *obj;
1453         struct event_return_value return_value;
1454         acpi_status status;
1455         u16 device_state;
1456         const struct key_entry *key;
1457
1458         status = wmi_get_event_data(value, &response);
1459         if (status != AE_OK) {
1460                 pr_warn("bad event status 0x%x\n", status);
1461                 return;
1462         }
1463
1464         obj = (union acpi_object *)response.pointer;
1465
1466         if (!obj)
1467                 return;
1468         if (obj->type != ACPI_TYPE_BUFFER) {
1469                 pr_warn("Unknown response received %d\n", obj->type);
1470                 kfree(obj);
1471                 return;
1472         }
1473         if (obj->buffer.length != 8) {
1474                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1475                 kfree(obj);
1476                 return;
1477         }
1478
1479         return_value = *((struct event_return_value *)obj->buffer.pointer);
1480         kfree(obj);
1481
1482         switch (return_value.function) {
1483         case WMID_HOTKEY_EVENT:
1484                 device_state = return_value.device_state;
1485                 pr_debug("device state: 0x%x\n", device_state);
1486
1487                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1488                                                         return_value.key_num);
1489                 if (!key) {
1490                         pr_warn("Unknown key number - 0x%x\n",
1491                                 return_value.key_num);
1492                 } else {
1493                         switch (key->keycode) {
1494                         case KEY_WLAN:
1495                         case KEY_BLUETOOTH:
1496                                 if (has_cap(ACER_CAP_WIRELESS))
1497                                         rfkill_set_sw_state(wireless_rfkill,
1498                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1499                                 if (has_cap(ACER_CAP_THREEG))
1500                                         rfkill_set_sw_state(threeg_rfkill,
1501                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1502                                 if (has_cap(ACER_CAP_BLUETOOTH))
1503                                         rfkill_set_sw_state(bluetooth_rfkill,
1504                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1505                                 break;
1506                         }
1507                         sparse_keymap_report_entry(acer_wmi_input_dev, key,
1508                                                    1, true);
1509                 }
1510                 break;
1511         default:
1512                 pr_warn("Unknown function number - %d - %d\n",
1513                         return_value.function, return_value.key_num);
1514                 break;
1515         }
1516 }
1517
1518 static acpi_status
1519 wmid3_set_lm_mode(struct lm_input_params *params,
1520                   struct lm_return_value *return_value)
1521 {
1522         acpi_status status;
1523         union acpi_object *obj;
1524
1525         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1526         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1527
1528         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1529         if (ACPI_FAILURE(status))
1530                 return status;
1531
1532         obj = output.pointer;
1533
1534         if (!obj)
1535                 return AE_ERROR;
1536         else if (obj->type != ACPI_TYPE_BUFFER) {
1537                 kfree(obj);
1538                 return AE_ERROR;
1539         }
1540         if (obj->buffer.length != 4) {
1541                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1542                 kfree(obj);
1543                 return AE_ERROR;
1544         }
1545
1546         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1547         kfree(obj);
1548
1549         return status;
1550 }
1551
1552 static int acer_wmi_enable_ec_raw(void)
1553 {
1554         struct lm_return_value return_value;
1555         acpi_status status;
1556         struct lm_input_params params = {
1557                 .function_num = 0x1,
1558                 .commun_devices = 0xFFFF,
1559                 .devices = 0xFFFF,
1560                 .lm_status = 0x00,            /* Launch Manager Deactive */
1561         };
1562
1563         status = wmid3_set_lm_mode(&params, &return_value);
1564
1565         if (return_value.error_code || return_value.ec_return_value)
1566                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1567                         return_value.error_code,
1568                         return_value.ec_return_value);
1569         else
1570                 pr_info("Enabled EC raw mode\n");
1571
1572         return status;
1573 }
1574
1575 static int acer_wmi_enable_lm(void)
1576 {
1577         struct lm_return_value return_value;
1578         acpi_status status;
1579         struct lm_input_params params = {
1580                 .function_num = 0x1,
1581                 .commun_devices = 0xFFFF,
1582                 .devices = 0xFFFF,
1583                 .lm_status = 0x01,            /* Launch Manager Active */
1584         };
1585
1586         status = wmid3_set_lm_mode(&params, &return_value);
1587
1588         if (return_value.error_code || return_value.ec_return_value)
1589                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1590                         return_value.error_code,
1591                         return_value.ec_return_value);
1592
1593         return status;
1594 }
1595
1596 static int __init acer_wmi_input_setup(void)
1597 {
1598         acpi_status status;
1599         int err;
1600
1601         acer_wmi_input_dev = input_allocate_device();
1602         if (!acer_wmi_input_dev)
1603                 return -ENOMEM;
1604
1605         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1606         acer_wmi_input_dev->phys = "wmi/input0";
1607         acer_wmi_input_dev->id.bustype = BUS_HOST;
1608
1609         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1610         if (err)
1611                 goto err_free_dev;
1612
1613         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1614                                                 acer_wmi_notify, NULL);
1615         if (ACPI_FAILURE(status)) {
1616                 err = -EIO;
1617                 goto err_free_keymap;
1618         }
1619
1620         err = input_register_device(acer_wmi_input_dev);
1621         if (err)
1622                 goto err_uninstall_notifier;
1623
1624         return 0;
1625
1626 err_uninstall_notifier:
1627         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1628 err_free_keymap:
1629         sparse_keymap_free(acer_wmi_input_dev);
1630 err_free_dev:
1631         input_free_device(acer_wmi_input_dev);
1632         return err;
1633 }
1634
1635 static void acer_wmi_input_destroy(void)
1636 {
1637         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1638         sparse_keymap_free(acer_wmi_input_dev);
1639         input_unregister_device(acer_wmi_input_dev);
1640 }
1641
1642 /*
1643  * debugfs functions
1644  */
1645 static u32 get_wmid_devices(void)
1646 {
1647         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1648         union acpi_object *obj;
1649         acpi_status status;
1650         u32 devices = 0;
1651
1652         status = wmi_query_block(WMID_GUID2, 1, &out);
1653         if (ACPI_FAILURE(status))
1654                 return 0;
1655
1656         obj = (union acpi_object *) out.pointer;
1657         if (obj && obj->type == ACPI_TYPE_BUFFER &&
1658                 (obj->buffer.length == sizeof(u32) ||
1659                 obj->buffer.length == sizeof(u64))) {
1660                 devices = *((u32 *) obj->buffer.pointer);
1661         } else if (obj->type == ACPI_TYPE_INTEGER) {
1662                 devices = (u32) obj->integer.value;
1663         }
1664
1665         kfree(out.pointer);
1666         return devices;
1667 }
1668
1669 /*
1670  * Platform device
1671  */
1672 static int __devinit acer_platform_probe(struct platform_device *device)
1673 {
1674         int err;
1675
1676         if (has_cap(ACER_CAP_MAILLED)) {
1677                 err = acer_led_init(&device->dev);
1678                 if (err)
1679                         goto error_mailled;
1680         }
1681
1682         if (has_cap(ACER_CAP_BRIGHTNESS)) {
1683                 err = acer_backlight_init(&device->dev);
1684                 if (err)
1685                         goto error_brightness;
1686         }
1687
1688         err = acer_rfkill_init(&device->dev);
1689         if (err)
1690                 goto error_rfkill;
1691
1692         return err;
1693
1694 error_rfkill:
1695         if (has_cap(ACER_CAP_BRIGHTNESS))
1696                 acer_backlight_exit();
1697 error_brightness:
1698         if (has_cap(ACER_CAP_MAILLED))
1699                 acer_led_exit();
1700 error_mailled:
1701         return err;
1702 }
1703
1704 static int acer_platform_remove(struct platform_device *device)
1705 {
1706         if (has_cap(ACER_CAP_MAILLED))
1707                 acer_led_exit();
1708         if (has_cap(ACER_CAP_BRIGHTNESS))
1709                 acer_backlight_exit();
1710
1711         acer_rfkill_exit();
1712         return 0;
1713 }
1714
1715 static int acer_platform_suspend(struct platform_device *dev,
1716 pm_message_t state)
1717 {
1718         u32 value;
1719         struct acer_data *data = &interface->data;
1720
1721         if (!data)
1722                 return -ENOMEM;
1723
1724         if (has_cap(ACER_CAP_MAILLED)) {
1725                 get_u32(&value, ACER_CAP_MAILLED);
1726                 set_u32(LED_OFF, ACER_CAP_MAILLED);
1727                 data->mailled = value;
1728         }
1729
1730         if (has_cap(ACER_CAP_BRIGHTNESS)) {
1731                 get_u32(&value, ACER_CAP_BRIGHTNESS);
1732                 data->brightness = value;
1733         }
1734
1735         return 0;
1736 }
1737
1738 static int acer_platform_resume(struct platform_device *device)
1739 {
1740         struct acer_data *data = &interface->data;
1741
1742         if (!data)
1743                 return -ENOMEM;
1744
1745         if (has_cap(ACER_CAP_MAILLED))
1746                 set_u32(data->mailled, ACER_CAP_MAILLED);
1747
1748         if (has_cap(ACER_CAP_BRIGHTNESS))
1749                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1750
1751         return 0;
1752 }
1753
1754 static void acer_platform_shutdown(struct platform_device *device)
1755 {
1756         struct acer_data *data = &interface->data;
1757
1758         if (!data)
1759                 return;
1760
1761         if (has_cap(ACER_CAP_MAILLED))
1762                 set_u32(LED_OFF, ACER_CAP_MAILLED);
1763 }
1764
1765 static struct platform_driver acer_platform_driver = {
1766         .driver = {
1767                 .name = "acer-wmi",
1768                 .owner = THIS_MODULE,
1769         },
1770         .probe = acer_platform_probe,
1771         .remove = acer_platform_remove,
1772         .suspend = acer_platform_suspend,
1773         .resume = acer_platform_resume,
1774         .shutdown = acer_platform_shutdown,
1775 };
1776
1777 static struct platform_device *acer_platform_device;
1778
1779 static int remove_sysfs(struct platform_device *device)
1780 {
1781         if (has_cap(ACER_CAP_THREEG))
1782                 device_remove_file(&device->dev, &dev_attr_threeg);
1783
1784         device_remove_file(&device->dev, &dev_attr_interface);
1785
1786         return 0;
1787 }
1788
1789 static int create_sysfs(void)
1790 {
1791         int retval = -ENOMEM;
1792
1793         if (has_cap(ACER_CAP_THREEG)) {
1794                 retval = device_create_file(&acer_platform_device->dev,
1795                         &dev_attr_threeg);
1796                 if (retval)
1797                         goto error_sysfs;
1798         }
1799
1800         retval = device_create_file(&acer_platform_device->dev,
1801                 &dev_attr_interface);
1802         if (retval)
1803                 goto error_sysfs;
1804
1805         return 0;
1806
1807 error_sysfs:
1808                 remove_sysfs(acer_platform_device);
1809         return retval;
1810 }
1811
1812 static void remove_debugfs(void)
1813 {
1814         debugfs_remove(interface->debug.devices);
1815         debugfs_remove(interface->debug.root);
1816 }
1817
1818 static int create_debugfs(void)
1819 {
1820         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1821         if (!interface->debug.root) {
1822                 pr_err("Failed to create debugfs directory");
1823                 return -ENOMEM;
1824         }
1825
1826         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1827                                         interface->debug.root,
1828                                         &interface->debug.wmid_devices);
1829         if (!interface->debug.devices)
1830                 goto error_debugfs;
1831
1832         return 0;
1833
1834 error_debugfs:
1835         remove_debugfs();
1836         return -ENOMEM;
1837 }
1838
1839 static int __init acer_wmi_init(void)
1840 {
1841         int err;
1842
1843         pr_info("Acer Laptop ACPI-WMI Extras\n");
1844
1845         if (dmi_check_system(acer_blacklist)) {
1846                 pr_info("Blacklisted hardware detected - not loading\n");
1847                 return -ENODEV;
1848         }
1849
1850         find_quirks();
1851
1852         /*
1853          * Detect which ACPI-WMI interface we're using.
1854          */
1855         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1856                 interface = &AMW0_V2_interface;
1857
1858         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1859                 interface = &wmid_interface;
1860
1861         if (wmi_has_guid(WMID_GUID2) && interface) {
1862                 if (ACPI_FAILURE(WMID_set_capabilities())) {
1863                         pr_err("Unable to detect available WMID devices\n");
1864                         return -ENODEV;
1865                 }
1866         } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1867                 pr_err("No WMID device detection method found\n");
1868                 return -ENODEV;
1869         }
1870
1871         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1872                 interface = &AMW0_interface;
1873
1874                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1875                         pr_err("Unable to detect available AMW0 devices\n");
1876                         return -ENODEV;
1877                 }
1878         }
1879
1880         if (wmi_has_guid(AMW0_GUID1))
1881                 AMW0_find_mailled();
1882
1883         if (!interface) {
1884                 pr_err("No or unsupported WMI interface, unable to load\n");
1885                 return -ENODEV;
1886         }
1887
1888         set_quirks();
1889
1890         if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1891                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1892                 pr_info("Brightness must be controlled by "
1893                        "generic video driver\n");
1894         }
1895
1896         if (wmi_has_guid(WMID_GUID3)) {
1897                 if (ec_raw_mode) {
1898                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1899                                 pr_err("Cannot enable EC raw mode\n");
1900                                 return -ENODEV;
1901                         }
1902                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1903                         pr_err("Cannot enable Launch Manager mode\n");
1904                         return -ENODEV;
1905                 }
1906         } else if (ec_raw_mode) {
1907                 pr_info("No WMID EC raw mode enable method\n");
1908         }
1909
1910         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1911                 err = acer_wmi_input_setup();
1912                 if (err)
1913                         return err;
1914         }
1915
1916         err = platform_driver_register(&acer_platform_driver);
1917         if (err) {
1918                 pr_err("Unable to register platform driver.\n");
1919                 goto error_platform_register;
1920         }
1921
1922         acer_platform_device = platform_device_alloc("acer-wmi", -1);
1923         if (!acer_platform_device) {
1924                 err = -ENOMEM;
1925                 goto error_device_alloc;
1926         }
1927
1928         err = platform_device_add(acer_platform_device);
1929         if (err)
1930                 goto error_device_add;
1931
1932         err = create_sysfs();
1933         if (err)
1934                 goto error_create_sys;
1935
1936         if (wmi_has_guid(WMID_GUID2)) {
1937                 interface->debug.wmid_devices = get_wmid_devices();
1938                 err = create_debugfs();
1939                 if (err)
1940                         goto error_create_debugfs;
1941         }
1942
1943         /* Override any initial settings with values from the commandline */
1944         acer_commandline_init();
1945
1946         return 0;
1947
1948 error_create_debugfs:
1949         remove_sysfs(acer_platform_device);
1950 error_create_sys:
1951         platform_device_del(acer_platform_device);
1952 error_device_add:
1953         platform_device_put(acer_platform_device);
1954 error_device_alloc:
1955         platform_driver_unregister(&acer_platform_driver);
1956 error_platform_register:
1957         if (wmi_has_guid(ACERWMID_EVENT_GUID))
1958                 acer_wmi_input_destroy();
1959
1960         return err;
1961 }
1962
1963 static void __exit acer_wmi_exit(void)
1964 {
1965         if (wmi_has_guid(ACERWMID_EVENT_GUID))
1966                 acer_wmi_input_destroy();
1967
1968         remove_sysfs(acer_platform_device);
1969         remove_debugfs();
1970         platform_device_unregister(acer_platform_device);
1971         platform_driver_unregister(&acer_platform_driver);
1972
1973         pr_info("Acer Laptop WMI Extras unloaded\n");
1974         return;
1975 }
1976
1977 module_init(acer_wmi_init);
1978 module_exit(acer_wmi_exit);