Version:  2.0.40 2.2.26 2.4.37 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10

Linux/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 #include <acpi/video.h>
 45 
 46 MODULE_AUTHOR("Carlos Corbacho");
 47 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
 48 MODULE_LICENSE("GPL");
 49 
 50 /*
 51  * Magic Number
 52  * Meaning is unknown - this number is required for writing to ACPI for AMW0
 53  * (it's also used in acerhk when directly accessing the BIOS)
 54  */
 55 #define ACER_AMW0_WRITE 0x9610
 56 
 57 /*
 58  * Bit masks for the AMW0 interface
 59  */
 60 #define ACER_AMW0_WIRELESS_MASK  0x35
 61 #define ACER_AMW0_BLUETOOTH_MASK 0x34
 62 #define ACER_AMW0_MAILLED_MASK   0x31
 63 
 64 /*
 65  * Method IDs for WMID interface
 66  */
 67 #define ACER_WMID_GET_WIRELESS_METHODID         1
 68 #define ACER_WMID_GET_BLUETOOTH_METHODID        2
 69 #define ACER_WMID_GET_BRIGHTNESS_METHODID       3
 70 #define ACER_WMID_SET_WIRELESS_METHODID         4
 71 #define ACER_WMID_SET_BLUETOOTH_METHODID        5
 72 #define ACER_WMID_SET_BRIGHTNESS_METHODID       6
 73 #define ACER_WMID_GET_THREEG_METHODID           10
 74 #define ACER_WMID_SET_THREEG_METHODID           11
 75 
 76 /*
 77  * Acer ACPI method GUIDs
 78  */
 79 #define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
 80 #define AMW0_GUID2              "431F16ED-0C2B-444C-B267-27DEB140CF9C"
 81 #define WMID_GUID1              "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
 82 #define WMID_GUID2              "95764E09-FB56-4E83-B31A-37761F60994A"
 83 #define WMID_GUID3              "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
 84 
 85 /*
 86  * Acer ACPI event GUIDs
 87  */
 88 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
 89 
 90 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
 91 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
 92 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
 93 
 94 enum acer_wmi_event_ids {
 95         WMID_HOTKEY_EVENT = 0x1,
 96         WMID_ACCEL_EVENT = 0x5,
 97 };
 98 
 99 static const struct key_entry acer_wmi_keymap[] __initconst = {
100         {KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
101         {KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
102         {KE_KEY, 0x04, {KEY_WLAN} },     /* WiFi */
103         {KE_KEY, 0x12, {KEY_BLUETOOTH} },       /* BT */
104         {KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
105         {KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
106         {KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
107         {KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
108         {KE_KEY, 0x29, {KEY_PROG3} },    /* P_Key for TM8372 */
109         {KE_IGNORE, 0x41, {KEY_MUTE} },
110         {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
111         {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
112         {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
113         {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
114         {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
115         {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
116         {KE_IGNORE, 0x45, {KEY_STOP} },
117         {KE_IGNORE, 0x50, {KEY_STOP} },
118         {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
119         {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
120         {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
121         {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
122         {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
123         {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
124         {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
125         {KE_IGNORE, 0x81, {KEY_SLEEP} },
126         {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
127         {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
128         {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
129         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
130         {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
131         {KE_END, 0}
132 };
133 
134 static struct input_dev *acer_wmi_input_dev;
135 static struct input_dev *acer_wmi_accel_dev;
136 
137 struct event_return_value {
138         u8 function;
139         u8 key_num;
140         u16 device_state;
141         u32 reserved;
142 } __attribute__((packed));
143 
144 /*
145  * GUID3 Get Device Status device flags
146  */
147 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
148 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
149 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
150 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
151 #define ACER_WMID3_GDS_TOUCHPAD         (1<<1)  /* Touchpad */
152 
153 struct lm_input_params {
154         u8 function_num;        /* Function Number */
155         u16 commun_devices;     /* Communication type devices default status */
156         u16 devices;            /* Other type devices default status */
157         u8 lm_status;           /* Launch Manager Status */
158         u16 reserved;
159 } __attribute__((packed));
160 
161 struct lm_return_value {
162         u8 error_code;          /* Error Code */
163         u8 ec_return_value;     /* EC Return Value */
164         u16 reserved;
165 } __attribute__((packed));
166 
167 struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
168         u8 function_num;        /* Function Number */
169         u8 hotkey_number;       /* Hotkey Number */
170         u16 devices;            /* Set Device */
171         u8 volume_value;        /* Volume Value */
172 } __attribute__((packed));
173 
174 struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
175         u8 function_num;        /* Function Number */
176         u8 hotkey_number;       /* Hotkey Number */
177         u16 devices;            /* Get Device */
178 } __attribute__((packed));
179 
180 struct wmid3_gds_return_value { /* Get Device Status return value*/
181         u8 error_code;          /* Error Code */
182         u8 ec_return_value;     /* EC Return Value */
183         u16 devices;            /* Current Device Status */
184         u32 reserved;
185 } __attribute__((packed));
186 
187 struct hotkey_function_type_aa {
188         u8 type;
189         u8 length;
190         u16 handle;
191         u16 commun_func_bitmap;
192         u16 application_func_bitmap;
193         u16 media_func_bitmap;
194         u16 display_func_bitmap;
195         u16 others_func_bitmap;
196         u8 commun_fn_key_number;
197 } __attribute__((packed));
198 
199 /*
200  * Interface capability flags
201  */
202 #define ACER_CAP_MAILLED                (1<<0)
203 #define ACER_CAP_WIRELESS               (1<<1)
204 #define ACER_CAP_BLUETOOTH              (1<<2)
205 #define ACER_CAP_BRIGHTNESS             (1<<3)
206 #define ACER_CAP_THREEG                 (1<<4)
207 #define ACER_CAP_ACCEL                  (1<<5)
208 #define ACER_CAP_ANY                    (0xFFFFFFFF)
209 
210 /*
211  * Interface type flags
212  */
213 enum interface_flags {
214         ACER_AMW0,
215         ACER_AMW0_V2,
216         ACER_WMID,
217         ACER_WMID_v2,
218 };
219 
220 #define ACER_DEFAULT_WIRELESS  0
221 #define ACER_DEFAULT_BLUETOOTH 0
222 #define ACER_DEFAULT_MAILLED   0
223 #define ACER_DEFAULT_THREEG    0
224 
225 static int max_brightness = 0xF;
226 
227 static int mailled = -1;
228 static int brightness = -1;
229 static int threeg = -1;
230 static int force_series;
231 static bool ec_raw_mode;
232 static bool has_type_aa;
233 static u16 commun_func_bitmap;
234 static u8 commun_fn_key_number;
235 
236 module_param(mailled, int, 0444);
237 module_param(brightness, int, 0444);
238 module_param(threeg, int, 0444);
239 module_param(force_series, int, 0444);
240 module_param(ec_raw_mode, bool, 0444);
241 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
242 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
243 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
244 MODULE_PARM_DESC(force_series, "Force a different laptop series");
245 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
246 
247 struct acer_data {
248         int mailled;
249         int threeg;
250         int brightness;
251 };
252 
253 struct acer_debug {
254         struct dentry *root;
255         struct dentry *devices;
256         u32 wmid_devices;
257 };
258 
259 static struct rfkill *wireless_rfkill;
260 static struct rfkill *bluetooth_rfkill;
261 static struct rfkill *threeg_rfkill;
262 static bool rfkill_inited;
263 
264 /* Each low-level interface must define at least some of the following */
265 struct wmi_interface {
266         /* The WMI device type */
267         u32 type;
268 
269         /* The capabilities this interface provides */
270         u32 capability;
271 
272         /* Private data for the current interface */
273         struct acer_data data;
274 
275         /* debugfs entries associated with this interface */
276         struct acer_debug debug;
277 };
278 
279 /* The static interface pointer, points to the currently detected interface */
280 static struct wmi_interface *interface;
281 
282 /*
283  * Embedded Controller quirks
284  * Some laptops require us to directly access the EC to either enable or query
285  * features that are not available through WMI.
286  */
287 
288 struct quirk_entry {
289         u8 wireless;
290         u8 mailled;
291         s8 brightness;
292         u8 bluetooth;
293 };
294 
295 static struct quirk_entry *quirks;
296 
297 static void __init set_quirks(void)
298 {
299         if (!interface)
300                 return;
301 
302         if (quirks->mailled)
303                 interface->capability |= ACER_CAP_MAILLED;
304 
305         if (quirks->brightness)
306                 interface->capability |= ACER_CAP_BRIGHTNESS;
307 }
308 
309 static int __init dmi_matched(const struct dmi_system_id *dmi)
310 {
311         quirks = dmi->driver_data;
312         return 1;
313 }
314 
315 static struct quirk_entry quirk_unknown = {
316 };
317 
318 static struct quirk_entry quirk_acer_aspire_1520 = {
319         .brightness = -1,
320 };
321 
322 static struct quirk_entry quirk_acer_travelmate_2490 = {
323         .mailled = 1,
324 };
325 
326 /* This AMW0 laptop has no bluetooth */
327 static struct quirk_entry quirk_medion_md_98300 = {
328         .wireless = 1,
329 };
330 
331 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
332         .wireless = 2,
333 };
334 
335 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
336         .wireless = 3,
337 };
338 
339 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
340 static const struct dmi_system_id acer_blacklist[] __initconst = {
341         {
342                 .ident = "Acer Aspire One (SSD)",
343                 .matches = {
344                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
345                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
346                 },
347         },
348         {
349                 .ident = "Acer Aspire One (HDD)",
350                 .matches = {
351                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
352                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
353                 },
354         },
355         {}
356 };
357 
358 static const struct dmi_system_id amw0_whitelist[] __initconst = {
359         {
360                 .ident = "Acer",
361                 .matches = {
362                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
363                 },
364         },
365         {
366                 .ident = "Gateway",
367                 .matches = {
368                         DMI_MATCH(DMI_SYS_VENDOR, "Gateway"),
369                 },
370         },
371         {
372                 .ident = "Packard Bell",
373                 .matches = {
374                         DMI_MATCH(DMI_SYS_VENDOR, "Packard Bell"),
375                 },
376         },
377         {}
378 };
379 
380 /*
381  * This quirk table is only for Acer/Gateway/Packard Bell family
382  * that those machines are supported by acer-wmi driver.
383  */
384 static const struct dmi_system_id acer_quirks[] __initconst = {
385         {
386                 .callback = dmi_matched,
387                 .ident = "Acer Aspire 1360",
388                 .matches = {
389                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
390                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
391                 },
392                 .driver_data = &quirk_acer_aspire_1520,
393         },
394         {
395                 .callback = dmi_matched,
396                 .ident = "Acer Aspire 1520",
397                 .matches = {
398                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
399                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
400                 },
401                 .driver_data = &quirk_acer_aspire_1520,
402         },
403         {
404                 .callback = dmi_matched,
405                 .ident = "Acer Aspire 3100",
406                 .matches = {
407                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
408                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
409                 },
410                 .driver_data = &quirk_acer_travelmate_2490,
411         },
412         {
413                 .callback = dmi_matched,
414                 .ident = "Acer Aspire 3610",
415                 .matches = {
416                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
417                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
418                 },
419                 .driver_data = &quirk_acer_travelmate_2490,
420         },
421         {
422                 .callback = dmi_matched,
423                 .ident = "Acer Aspire 5100",
424                 .matches = {
425                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
426                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
427                 },
428                 .driver_data = &quirk_acer_travelmate_2490,
429         },
430         {
431                 .callback = dmi_matched,
432                 .ident = "Acer Aspire 5610",
433                 .matches = {
434                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
435                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
436                 },
437                 .driver_data = &quirk_acer_travelmate_2490,
438         },
439         {
440                 .callback = dmi_matched,
441                 .ident = "Acer Aspire 5630",
442                 .matches = {
443                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
444                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
445                 },
446                 .driver_data = &quirk_acer_travelmate_2490,
447         },
448         {
449                 .callback = dmi_matched,
450                 .ident = "Acer Aspire 5650",
451                 .matches = {
452                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
453                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
454                 },
455                 .driver_data = &quirk_acer_travelmate_2490,
456         },
457         {
458                 .callback = dmi_matched,
459                 .ident = "Acer Aspire 5680",
460                 .matches = {
461                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
462                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
463                 },
464                 .driver_data = &quirk_acer_travelmate_2490,
465         },
466         {
467                 .callback = dmi_matched,
468                 .ident = "Acer Aspire 9110",
469                 .matches = {
470                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
471                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
472                 },
473                 .driver_data = &quirk_acer_travelmate_2490,
474         },
475         {
476                 .callback = dmi_matched,
477                 .ident = "Acer TravelMate 2490",
478                 .matches = {
479                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
480                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
481                 },
482                 .driver_data = &quirk_acer_travelmate_2490,
483         },
484         {
485                 .callback = dmi_matched,
486                 .ident = "Acer TravelMate 4200",
487                 .matches = {
488                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
489                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
490                 },
491                 .driver_data = &quirk_acer_travelmate_2490,
492         },
493         {}
494 };
495 
496 /*
497  * This quirk list is for those non-acer machines that have AMW0_GUID1
498  * but supported by acer-wmi in past days. Keeping this quirk list here
499  * is only for backward compatible. Please do not add new machine to
500  * here anymore. Those non-acer machines should be supported by
501  * appropriate wmi drivers.
502  */
503 static const struct dmi_system_id non_acer_quirks[] __initconst = {
504         {
505                 .callback = dmi_matched,
506                 .ident = "Fujitsu Siemens Amilo Li 1718",
507                 .matches = {
508                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
509                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
510                 },
511                 .driver_data = &quirk_fujitsu_amilo_li_1718,
512         },
513         {
514                 .callback = dmi_matched,
515                 .ident = "Medion MD 98300",
516                 .matches = {
517                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
518                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
519                 },
520                 .driver_data = &quirk_medion_md_98300,
521         },
522         {
523                 .callback = dmi_matched,
524                 .ident = "Lenovo Ideapad S205",
525                 .matches = {
526                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
527                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
528                 },
529                 .driver_data = &quirk_lenovo_ideapad_s205,
530         },
531         {
532                 .callback = dmi_matched,
533                 .ident = "Lenovo Ideapad S205 (Brazos)",
534                 .matches = {
535                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
536                         DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
537                 },
538                 .driver_data = &quirk_lenovo_ideapad_s205,
539         },
540         {
541                 .callback = dmi_matched,
542                 .ident = "Lenovo 3000 N200",
543                 .matches = {
544                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
545                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
546                 },
547                 .driver_data = &quirk_fujitsu_amilo_li_1718,
548         },
549         {
550                 .callback = dmi_matched,
551                 .ident = "Lenovo Ideapad S205-10382JG",
552                 .matches = {
553                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
554                         DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
555                 },
556                 .driver_data = &quirk_lenovo_ideapad_s205,
557         },
558         {
559                 .callback = dmi_matched,
560                 .ident = "Lenovo Ideapad S205-1038DPG",
561                 .matches = {
562                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
563                         DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
564                 },
565                 .driver_data = &quirk_lenovo_ideapad_s205,
566         },
567         {}
568 };
569 
570 static int __init
571 video_set_backlight_video_vendor(const struct dmi_system_id *d)
572 {
573         interface->capability &= ~ACER_CAP_BRIGHTNESS;
574         pr_info("Brightness must be controlled by generic video driver\n");
575         return 0;
576 }
577 
578 static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
579         {
580                 .callback = video_set_backlight_video_vendor,
581                 .ident = "Acer TravelMate 4750",
582                 .matches = {
583                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
584                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
585                 },
586         },
587         {
588                 .callback = video_set_backlight_video_vendor,
589                 .ident = "Acer Extensa 5235",
590                 .matches = {
591                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
592                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
593                 },
594         },
595         {
596                 .callback = video_set_backlight_video_vendor,
597                 .ident = "Acer TravelMate 5760",
598                 .matches = {
599                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
600                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
601                 },
602         },
603         {
604                 .callback = video_set_backlight_video_vendor,
605                 .ident = "Acer Aspire 5750",
606                 .matches = {
607                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
608                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
609                 },
610         },
611         {
612                 .callback = video_set_backlight_video_vendor,
613                 .ident = "Acer Aspire 5741",
614                 .matches = {
615                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
616                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
617                 },
618         },
619         {
620                 /*
621                  * Note no video_set_backlight_video_vendor, we must use the
622                  * acer interface, as there is no native backlight interface.
623                  */
624                 .ident = "Acer KAV80",
625                 .matches = {
626                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
627                         DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
628                 },
629         },
630         {}
631 };
632 
633 /* Find which quirks are needed for a particular vendor/ model pair */
634 static void __init find_quirks(void)
635 {
636         if (!force_series) {
637                 dmi_check_system(acer_quirks);
638                 dmi_check_system(non_acer_quirks);
639         } else if (force_series == 2490) {
640                 quirks = &quirk_acer_travelmate_2490;
641         }
642 
643         if (quirks == NULL)
644                 quirks = &quirk_unknown;
645 
646         set_quirks();
647 }
648 
649 /*
650  * General interface convenience methods
651  */
652 
653 static bool has_cap(u32 cap)
654 {
655         if ((interface->capability & cap) != 0)
656                 return 1;
657 
658         return 0;
659 }
660 
661 /*
662  * AMW0 (V1) interface
663  */
664 struct wmab_args {
665         u32 eax;
666         u32 ebx;
667         u32 ecx;
668         u32 edx;
669 };
670 
671 struct wmab_ret {
672         u32 eax;
673         u32 ebx;
674         u32 ecx;
675         u32 edx;
676         u32 eex;
677 };
678 
679 static acpi_status wmab_execute(struct wmab_args *regbuf,
680 struct acpi_buffer *result)
681 {
682         struct acpi_buffer input;
683         acpi_status status;
684         input.length = sizeof(struct wmab_args);
685         input.pointer = (u8 *)regbuf;
686 
687         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
688 
689         return status;
690 }
691 
692 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
693 {
694         int err;
695         u8 result;
696 
697         switch (cap) {
698         case ACER_CAP_MAILLED:
699                 switch (quirks->mailled) {
700                 default:
701                         err = ec_read(0xA, &result);
702                         if (err)
703                                 return AE_ERROR;
704                         *value = (result >> 7) & 0x1;
705                         return AE_OK;
706                 }
707                 break;
708         case ACER_CAP_WIRELESS:
709                 switch (quirks->wireless) {
710                 case 1:
711                         err = ec_read(0x7B, &result);
712                         if (err)
713                                 return AE_ERROR;
714                         *value = result & 0x1;
715                         return AE_OK;
716                 case 2:
717                         err = ec_read(0x71, &result);
718                         if (err)
719                                 return AE_ERROR;
720                         *value = result & 0x1;
721                         return AE_OK;
722                 case 3:
723                         err = ec_read(0x78, &result);
724                         if (err)
725                                 return AE_ERROR;
726                         *value = result & 0x1;
727                         return AE_OK;
728                 default:
729                         err = ec_read(0xA, &result);
730                         if (err)
731                                 return AE_ERROR;
732                         *value = (result >> 2) & 0x1;
733                         return AE_OK;
734                 }
735                 break;
736         case ACER_CAP_BLUETOOTH:
737                 switch (quirks->bluetooth) {
738                 default:
739                         err = ec_read(0xA, &result);
740                         if (err)
741                                 return AE_ERROR;
742                         *value = (result >> 4) & 0x1;
743                         return AE_OK;
744                 }
745                 break;
746         case ACER_CAP_BRIGHTNESS:
747                 switch (quirks->brightness) {
748                 default:
749                         err = ec_read(0x83, &result);
750                         if (err)
751                                 return AE_ERROR;
752                         *value = result;
753                         return AE_OK;
754                 }
755                 break;
756         default:
757                 return AE_ERROR;
758         }
759         return AE_OK;
760 }
761 
762 static acpi_status AMW0_set_u32(u32 value, u32 cap)
763 {
764         struct wmab_args args;
765 
766         args.eax = ACER_AMW0_WRITE;
767         args.ebx = value ? (1<<8) : 0;
768         args.ecx = args.edx = 0;
769 
770         switch (cap) {
771         case ACER_CAP_MAILLED:
772                 if (value > 1)
773                         return AE_BAD_PARAMETER;
774                 args.ebx |= ACER_AMW0_MAILLED_MASK;
775                 break;
776         case ACER_CAP_WIRELESS:
777                 if (value > 1)
778                         return AE_BAD_PARAMETER;
779                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
780                 break;
781         case ACER_CAP_BLUETOOTH:
782                 if (value > 1)
783                         return AE_BAD_PARAMETER;
784                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
785                 break;
786         case ACER_CAP_BRIGHTNESS:
787                 if (value > max_brightness)
788                         return AE_BAD_PARAMETER;
789                 switch (quirks->brightness) {
790                 default:
791                         return ec_write(0x83, value);
792                         break;
793                 }
794         default:
795                 return AE_ERROR;
796         }
797 
798         /* Actually do the set */
799         return wmab_execute(&args, NULL);
800 }
801 
802 static acpi_status __init AMW0_find_mailled(void)
803 {
804         struct wmab_args args;
805         struct wmab_ret ret;
806         acpi_status status = AE_OK;
807         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
808         union acpi_object *obj;
809 
810         args.eax = 0x86;
811         args.ebx = args.ecx = args.edx = 0;
812 
813         status = wmab_execute(&args, &out);
814         if (ACPI_FAILURE(status))
815                 return status;
816 
817         obj = (union acpi_object *) out.pointer;
818         if (obj && obj->type == ACPI_TYPE_BUFFER &&
819         obj->buffer.length == sizeof(struct wmab_ret)) {
820                 ret = *((struct wmab_ret *) obj->buffer.pointer);
821         } else {
822                 kfree(out.pointer);
823                 return AE_ERROR;
824         }
825 
826         if (ret.eex & 0x1)
827                 interface->capability |= ACER_CAP_MAILLED;
828 
829         kfree(out.pointer);
830 
831         return AE_OK;
832 }
833 
834 static const struct acpi_device_id norfkill_ids[] __initconst = {
835         { "VPC2004", 0},
836         { "IBM0068", 0},
837         { "LEN0068", 0},
838         { "SNY5001", 0},        /* sony-laptop in charge */
839         { "HPQ6601", 0},
840         { "", 0},
841 };
842 
843 static int __init AMW0_set_cap_acpi_check_device(void)
844 {
845         const struct acpi_device_id *id;
846 
847         for (id = norfkill_ids; id->id[0]; id++)
848                 if (acpi_dev_found(id->id))
849                         return true;
850 
851         return false;
852 }
853 
854 static acpi_status __init AMW0_set_capabilities(void)
855 {
856         struct wmab_args args;
857         struct wmab_ret ret;
858         acpi_status status;
859         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
860         union acpi_object *obj;
861 
862         /*
863          * On laptops with this strange GUID (non Acer), normal probing doesn't
864          * work.
865          */
866         if (wmi_has_guid(AMW0_GUID2)) {
867                 if ((quirks != &quirk_unknown) ||
868                     !AMW0_set_cap_acpi_check_device())
869                         interface->capability |= ACER_CAP_WIRELESS;
870                 return AE_OK;
871         }
872 
873         args.eax = ACER_AMW0_WRITE;
874         args.ecx = args.edx = 0;
875 
876         args.ebx = 0xa2 << 8;
877         args.ebx |= ACER_AMW0_WIRELESS_MASK;
878 
879         status = wmab_execute(&args, &out);
880         if (ACPI_FAILURE(status))
881                 return status;
882 
883         obj = out.pointer;
884         if (obj && obj->type == ACPI_TYPE_BUFFER &&
885         obj->buffer.length == sizeof(struct wmab_ret)) {
886                 ret = *((struct wmab_ret *) obj->buffer.pointer);
887         } else {
888                 status = AE_ERROR;
889                 goto out;
890         }
891 
892         if (ret.eax & 0x1)
893                 interface->capability |= ACER_CAP_WIRELESS;
894 
895         args.ebx = 2 << 8;
896         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
897 
898         /*
899          * It's ok to use existing buffer for next wmab_execute call.
900          * But we need to kfree(out.pointer) if next wmab_execute fail.
901          */
902         status = wmab_execute(&args, &out);
903         if (ACPI_FAILURE(status))
904                 goto out;
905 
906         obj = (union acpi_object *) out.pointer;
907         if (obj && obj->type == ACPI_TYPE_BUFFER
908         && obj->buffer.length == sizeof(struct wmab_ret)) {
909                 ret = *((struct wmab_ret *) obj->buffer.pointer);
910         } else {
911                 status = AE_ERROR;
912                 goto out;
913         }
914 
915         if (ret.eax & 0x1)
916                 interface->capability |= ACER_CAP_BLUETOOTH;
917 
918         /*
919          * This appears to be safe to enable, since all Wistron based laptops
920          * appear to use the same EC register for brightness, even if they
921          * differ for wireless, etc
922          */
923         if (quirks->brightness >= 0)
924                 interface->capability |= ACER_CAP_BRIGHTNESS;
925 
926         status = AE_OK;
927 out:
928         kfree(out.pointer);
929         return status;
930 }
931 
932 static struct wmi_interface AMW0_interface = {
933         .type = ACER_AMW0,
934 };
935 
936 static struct wmi_interface AMW0_V2_interface = {
937         .type = ACER_AMW0_V2,
938 };
939 
940 /*
941  * New interface (The WMID interface)
942  */
943 static acpi_status
944 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
945 {
946         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
947         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
948         union acpi_object *obj;
949         u32 tmp = 0;
950         acpi_status status;
951 
952         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
953 
954         if (ACPI_FAILURE(status))
955                 return status;
956 
957         obj = (union acpi_object *) result.pointer;
958         if (obj) {
959                 if (obj->type == ACPI_TYPE_BUFFER &&
960                         (obj->buffer.length == sizeof(u32) ||
961                         obj->buffer.length == sizeof(u64))) {
962                         tmp = *((u32 *) obj->buffer.pointer);
963                 } else if (obj->type == ACPI_TYPE_INTEGER) {
964                         tmp = (u32) obj->integer.value;
965                 }
966         }
967 
968         if (out)
969                 *out = tmp;
970 
971         kfree(result.pointer);
972 
973         return status;
974 }
975 
976 static acpi_status WMID_get_u32(u32 *value, u32 cap)
977 {
978         acpi_status status;
979         u8 tmp;
980         u32 result, method_id = 0;
981 
982         switch (cap) {
983         case ACER_CAP_WIRELESS:
984                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
985                 break;
986         case ACER_CAP_BLUETOOTH:
987                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
988                 break;
989         case ACER_CAP_BRIGHTNESS:
990                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
991                 break;
992         case ACER_CAP_THREEG:
993                 method_id = ACER_WMID_GET_THREEG_METHODID;
994                 break;
995         case ACER_CAP_MAILLED:
996                 if (quirks->mailled == 1) {
997                         ec_read(0x9f, &tmp);
998                         *value = tmp & 0x1;
999                         return 0;
1000                 }
1001         default:
1002                 return AE_ERROR;
1003         }
1004         status = WMI_execute_u32(method_id, 0, &result);
1005 
1006         if (ACPI_SUCCESS(status))
1007                 *value = (u8)result;
1008 
1009         return status;
1010 }
1011 
1012 static acpi_status WMID_set_u32(u32 value, u32 cap)
1013 {
1014         u32 method_id = 0;
1015         char param;
1016 
1017         switch (cap) {
1018         case ACER_CAP_BRIGHTNESS:
1019                 if (value > max_brightness)
1020                         return AE_BAD_PARAMETER;
1021                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
1022                 break;
1023         case ACER_CAP_WIRELESS:
1024                 if (value > 1)
1025                         return AE_BAD_PARAMETER;
1026                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
1027                 break;
1028         case ACER_CAP_BLUETOOTH:
1029                 if (value > 1)
1030                         return AE_BAD_PARAMETER;
1031                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
1032                 break;
1033         case ACER_CAP_THREEG:
1034                 if (value > 1)
1035                         return AE_BAD_PARAMETER;
1036                 method_id = ACER_WMID_SET_THREEG_METHODID;
1037                 break;
1038         case ACER_CAP_MAILLED:
1039                 if (value > 1)
1040                         return AE_BAD_PARAMETER;
1041                 if (quirks->mailled == 1) {
1042                         param = value ? 0x92 : 0x93;
1043                         i8042_lock_chip();
1044                         i8042_command(&param, 0x1059);
1045                         i8042_unlock_chip();
1046                         return 0;
1047                 }
1048                 break;
1049         default:
1050                 return AE_ERROR;
1051         }
1052         return WMI_execute_u32(method_id, (u32)value, NULL);
1053 }
1054 
1055 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1056 {
1057         struct wmid3_gds_return_value return_value;
1058         acpi_status status;
1059         union acpi_object *obj;
1060         struct wmid3_gds_get_input_param params = {
1061                 .function_num = 0x1,
1062                 .hotkey_number = commun_fn_key_number,
1063                 .devices = device,
1064         };
1065         struct acpi_buffer input = {
1066                 sizeof(struct wmid3_gds_get_input_param),
1067                 &params
1068         };
1069         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1070 
1071         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1072         if (ACPI_FAILURE(status))
1073                 return status;
1074 
1075         obj = output.pointer;
1076 
1077         if (!obj)
1078                 return AE_ERROR;
1079         else if (obj->type != ACPI_TYPE_BUFFER) {
1080                 kfree(obj);
1081                 return AE_ERROR;
1082         }
1083         if (obj->buffer.length != 8) {
1084                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1085                 kfree(obj);
1086                 return AE_ERROR;
1087         }
1088 
1089         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1090         kfree(obj);
1091 
1092         if (return_value.error_code || return_value.ec_return_value)
1093                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1094                         device,
1095                         return_value.error_code,
1096                         return_value.ec_return_value);
1097         else
1098                 *value = !!(return_value.devices & device);
1099 
1100         return status;
1101 }
1102 
1103 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1104 {
1105         u16 device;
1106 
1107         switch (cap) {
1108         case ACER_CAP_WIRELESS:
1109                 device = ACER_WMID3_GDS_WIRELESS;
1110                 break;
1111         case ACER_CAP_BLUETOOTH:
1112                 device = ACER_WMID3_GDS_BLUETOOTH;
1113                 break;
1114         case ACER_CAP_THREEG:
1115                 device = ACER_WMID3_GDS_THREEG;
1116                 break;
1117         default:
1118                 return AE_ERROR;
1119         }
1120         return wmid3_get_device_status(value, device);
1121 }
1122 
1123 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1124 {
1125         struct wmid3_gds_return_value return_value;
1126         acpi_status status;
1127         union acpi_object *obj;
1128         u16 devices;
1129         struct wmid3_gds_get_input_param get_params = {
1130                 .function_num = 0x1,
1131                 .hotkey_number = commun_fn_key_number,
1132                 .devices = commun_func_bitmap,
1133         };
1134         struct acpi_buffer get_input = {
1135                 sizeof(struct wmid3_gds_get_input_param),
1136                 &get_params
1137         };
1138         struct wmid3_gds_set_input_param set_params = {
1139                 .function_num = 0x2,
1140                 .hotkey_number = commun_fn_key_number,
1141                 .devices = commun_func_bitmap,
1142         };
1143         struct acpi_buffer set_input = {
1144                 sizeof(struct wmid3_gds_set_input_param),
1145                 &set_params
1146         };
1147         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1148         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1149 
1150         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1151         if (ACPI_FAILURE(status))
1152                 return status;
1153 
1154         obj = output.pointer;
1155 
1156         if (!obj)
1157                 return AE_ERROR;
1158         else if (obj->type != ACPI_TYPE_BUFFER) {
1159                 kfree(obj);
1160                 return AE_ERROR;
1161         }
1162         if (obj->buffer.length != 8) {
1163                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1164                 kfree(obj);
1165                 return AE_ERROR;
1166         }
1167 
1168         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1169         kfree(obj);
1170 
1171         if (return_value.error_code || return_value.ec_return_value) {
1172                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1173                         return_value.error_code,
1174                         return_value.ec_return_value);
1175                 return status;
1176         }
1177 
1178         devices = return_value.devices;
1179         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1180 
1181         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1182         if (ACPI_FAILURE(status))
1183                 return status;
1184 
1185         obj = output2.pointer;
1186 
1187         if (!obj)
1188                 return AE_ERROR;
1189         else if (obj->type != ACPI_TYPE_BUFFER) {
1190                 kfree(obj);
1191                 return AE_ERROR;
1192         }
1193         if (obj->buffer.length != 4) {
1194                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1195                 kfree(obj);
1196                 return AE_ERROR;
1197         }
1198 
1199         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1200         kfree(obj);
1201 
1202         if (return_value.error_code || return_value.ec_return_value)
1203                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1204                         return_value.error_code,
1205                         return_value.ec_return_value);
1206 
1207         return status;
1208 }
1209 
1210 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1211 {
1212         u16 device;
1213 
1214         switch (cap) {
1215         case ACER_CAP_WIRELESS:
1216                 device = ACER_WMID3_GDS_WIRELESS;
1217                 break;
1218         case ACER_CAP_BLUETOOTH:
1219                 device = ACER_WMID3_GDS_BLUETOOTH;
1220                 break;
1221         case ACER_CAP_THREEG:
1222                 device = ACER_WMID3_GDS_THREEG;
1223                 break;
1224         default:
1225                 return AE_ERROR;
1226         }
1227         return wmid3_set_device_status(value, device);
1228 }
1229 
1230 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1231 {
1232         struct hotkey_function_type_aa *type_aa;
1233 
1234         /* We are looking for OEM-specific Type AAh */
1235         if (header->type != 0xAA)
1236                 return;
1237 
1238         has_type_aa = true;
1239         type_aa = (struct hotkey_function_type_aa *) header;
1240 
1241         pr_info("Function bitmap for Communication Button: 0x%x\n",
1242                 type_aa->commun_func_bitmap);
1243         commun_func_bitmap = type_aa->commun_func_bitmap;
1244 
1245         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1246                 interface->capability |= ACER_CAP_WIRELESS;
1247         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1248                 interface->capability |= ACER_CAP_THREEG;
1249         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1250                 interface->capability |= ACER_CAP_BLUETOOTH;
1251 
1252         commun_fn_key_number = type_aa->commun_fn_key_number;
1253 }
1254 
1255 static acpi_status __init WMID_set_capabilities(void)
1256 {
1257         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1258         union acpi_object *obj;
1259         acpi_status status;
1260         u32 devices;
1261 
1262         status = wmi_query_block(WMID_GUID2, 1, &out);
1263         if (ACPI_FAILURE(status))
1264                 return status;
1265 
1266         obj = (union acpi_object *) out.pointer;
1267         if (obj) {
1268                 if (obj->type == ACPI_TYPE_BUFFER &&
1269                         (obj->buffer.length == sizeof(u32) ||
1270                         obj->buffer.length == sizeof(u64))) {
1271                         devices = *((u32 *) obj->buffer.pointer);
1272                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1273                         devices = (u32) obj->integer.value;
1274                 } else {
1275                         kfree(out.pointer);
1276                         return AE_ERROR;
1277                 }
1278         } else {
1279                 kfree(out.pointer);
1280                 return AE_ERROR;
1281         }
1282 
1283         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1284         if (devices & 0x07)
1285                 interface->capability |= ACER_CAP_WIRELESS;
1286         if (devices & 0x40)
1287                 interface->capability |= ACER_CAP_THREEG;
1288         if (devices & 0x10)
1289                 interface->capability |= ACER_CAP_BLUETOOTH;
1290 
1291         if (!(devices & 0x20))
1292                 max_brightness = 0x9;
1293 
1294         kfree(out.pointer);
1295         return status;
1296 }
1297 
1298 static struct wmi_interface wmid_interface = {
1299         .type = ACER_WMID,
1300 };
1301 
1302 static struct wmi_interface wmid_v2_interface = {
1303         .type = ACER_WMID_v2,
1304 };
1305 
1306 /*
1307  * Generic Device (interface-independent)
1308  */
1309 
1310 static acpi_status get_u32(u32 *value, u32 cap)
1311 {
1312         acpi_status status = AE_ERROR;
1313 
1314         switch (interface->type) {
1315         case ACER_AMW0:
1316                 status = AMW0_get_u32(value, cap);
1317                 break;
1318         case ACER_AMW0_V2:
1319                 if (cap == ACER_CAP_MAILLED) {
1320                         status = AMW0_get_u32(value, cap);
1321                         break;
1322                 }
1323         case ACER_WMID:
1324                 status = WMID_get_u32(value, cap);
1325                 break;
1326         case ACER_WMID_v2:
1327                 if (cap & (ACER_CAP_WIRELESS |
1328                            ACER_CAP_BLUETOOTH |
1329                            ACER_CAP_THREEG))
1330                         status = wmid_v2_get_u32(value, cap);
1331                 else if (wmi_has_guid(WMID_GUID2))
1332                         status = WMID_get_u32(value, cap);
1333                 break;
1334         }
1335 
1336         return status;
1337 }
1338 
1339 static acpi_status set_u32(u32 value, u32 cap)
1340 {
1341         acpi_status status;
1342 
1343         if (interface->capability & cap) {
1344                 switch (interface->type) {
1345                 case ACER_AMW0:
1346                         return AMW0_set_u32(value, cap);
1347                 case ACER_AMW0_V2:
1348                         if (cap == ACER_CAP_MAILLED)
1349                                 return AMW0_set_u32(value, cap);
1350 
1351                         /*
1352                          * On some models, some WMID methods don't toggle
1353                          * properly. For those cases, we want to run the AMW0
1354                          * method afterwards to be certain we've really toggled
1355                          * the device state.
1356                          */
1357                         if (cap == ACER_CAP_WIRELESS ||
1358                                 cap == ACER_CAP_BLUETOOTH) {
1359                                 status = WMID_set_u32(value, cap);
1360                                 if (ACPI_FAILURE(status))
1361                                         return status;
1362 
1363                                 return AMW0_set_u32(value, cap);
1364                         }
1365                 case ACER_WMID:
1366                         return WMID_set_u32(value, cap);
1367                 case ACER_WMID_v2:
1368                         if (cap & (ACER_CAP_WIRELESS |
1369                                    ACER_CAP_BLUETOOTH |
1370                                    ACER_CAP_THREEG))
1371                                 return wmid_v2_set_u32(value, cap);
1372                         else if (wmi_has_guid(WMID_GUID2))
1373                                 return WMID_set_u32(value, cap);
1374                 default:
1375                         return AE_BAD_PARAMETER;
1376                 }
1377         }
1378         return AE_BAD_PARAMETER;
1379 }
1380 
1381 static void __init acer_commandline_init(void)
1382 {
1383         /*
1384          * These will all fail silently if the value given is invalid, or the
1385          * capability isn't available on the given interface
1386          */
1387         if (mailled >= 0)
1388                 set_u32(mailled, ACER_CAP_MAILLED);
1389         if (!has_type_aa && threeg >= 0)
1390                 set_u32(threeg, ACER_CAP_THREEG);
1391         if (brightness >= 0)
1392                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1393 }
1394 
1395 /*
1396  * LED device (Mail LED only, no other LEDs known yet)
1397  */
1398 static void mail_led_set(struct led_classdev *led_cdev,
1399 enum led_brightness value)
1400 {
1401         set_u32(value, ACER_CAP_MAILLED);
1402 }
1403 
1404 static struct led_classdev mail_led = {
1405         .name = "acer-wmi::mail",
1406         .brightness_set = mail_led_set,
1407 };
1408 
1409 static int acer_led_init(struct device *dev)
1410 {
1411         return led_classdev_register(dev, &mail_led);
1412 }
1413 
1414 static void acer_led_exit(void)
1415 {
1416         set_u32(LED_OFF, ACER_CAP_MAILLED);
1417         led_classdev_unregister(&mail_led);
1418 }
1419 
1420 /*
1421  * Backlight device
1422  */
1423 static struct backlight_device *acer_backlight_device;
1424 
1425 static int read_brightness(struct backlight_device *bd)
1426 {
1427         u32 value;
1428         get_u32(&value, ACER_CAP_BRIGHTNESS);
1429         return value;
1430 }
1431 
1432 static int update_bl_status(struct backlight_device *bd)
1433 {
1434         int intensity = bd->props.brightness;
1435 
1436         if (bd->props.power != FB_BLANK_UNBLANK)
1437                 intensity = 0;
1438         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1439                 intensity = 0;
1440 
1441         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1442 
1443         return 0;
1444 }
1445 
1446 static const struct backlight_ops acer_bl_ops = {
1447         .get_brightness = read_brightness,
1448         .update_status = update_bl_status,
1449 };
1450 
1451 static int acer_backlight_init(struct device *dev)
1452 {
1453         struct backlight_properties props;
1454         struct backlight_device *bd;
1455 
1456         memset(&props, 0, sizeof(struct backlight_properties));
1457         props.type = BACKLIGHT_PLATFORM;
1458         props.max_brightness = max_brightness;
1459         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1460                                        &props);
1461         if (IS_ERR(bd)) {
1462                 pr_err("Could not register Acer backlight device\n");
1463                 acer_backlight_device = NULL;
1464                 return PTR_ERR(bd);
1465         }
1466 
1467         acer_backlight_device = bd;
1468 
1469         bd->props.power = FB_BLANK_UNBLANK;
1470         bd->props.brightness = read_brightness(bd);
1471         backlight_update_status(bd);
1472         return 0;
1473 }
1474 
1475 static void acer_backlight_exit(void)
1476 {
1477         backlight_device_unregister(acer_backlight_device);
1478 }
1479 
1480 /*
1481  * Accelerometer device
1482  */
1483 static acpi_handle gsensor_handle;
1484 
1485 static int acer_gsensor_init(void)
1486 {
1487         acpi_status status;
1488         struct acpi_buffer output;
1489         union acpi_object out_obj;
1490 
1491         output.length = sizeof(out_obj);
1492         output.pointer = &out_obj;
1493         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1494         if (ACPI_FAILURE(status))
1495                 return -1;
1496 
1497         return 0;
1498 }
1499 
1500 static int acer_gsensor_open(struct input_dev *input)
1501 {
1502         return acer_gsensor_init();
1503 }
1504 
1505 static int acer_gsensor_event(void)
1506 {
1507         acpi_status status;
1508         struct acpi_buffer output;
1509         union acpi_object out_obj[5];
1510 
1511         if (!has_cap(ACER_CAP_ACCEL))
1512                 return -1;
1513 
1514         output.length = sizeof(out_obj);
1515         output.pointer = out_obj;
1516 
1517         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1518         if (ACPI_FAILURE(status))
1519                 return -1;
1520 
1521         if (out_obj->package.count != 4)
1522                 return -1;
1523 
1524         input_report_abs(acer_wmi_accel_dev, ABS_X,
1525                 (s16)out_obj->package.elements[0].integer.value);
1526         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1527                 (s16)out_obj->package.elements[1].integer.value);
1528         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1529                 (s16)out_obj->package.elements[2].integer.value);
1530         input_sync(acer_wmi_accel_dev);
1531         return 0;
1532 }
1533 
1534 /*
1535  * Rfkill devices
1536  */
1537 static void acer_rfkill_update(struct work_struct *ignored);
1538 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1539 static void acer_rfkill_update(struct work_struct *ignored)
1540 {
1541         u32 state;
1542         acpi_status status;
1543 
1544         if (has_cap(ACER_CAP_WIRELESS)) {
1545                 status = get_u32(&state, ACER_CAP_WIRELESS);
1546                 if (ACPI_SUCCESS(status)) {
1547                         if (quirks->wireless == 3)
1548                                 rfkill_set_hw_state(wireless_rfkill, !state);
1549                         else
1550                                 rfkill_set_sw_state(wireless_rfkill, !state);
1551                 }
1552         }
1553 
1554         if (has_cap(ACER_CAP_BLUETOOTH)) {
1555                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1556                 if (ACPI_SUCCESS(status))
1557                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1558         }
1559 
1560         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1561                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1562                 if (ACPI_SUCCESS(status))
1563                         rfkill_set_sw_state(threeg_rfkill, !state);
1564         }
1565 
1566         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1567 }
1568 
1569 static int acer_rfkill_set(void *data, bool blocked)
1570 {
1571         acpi_status status;
1572         u32 cap = (unsigned long)data;
1573 
1574         if (rfkill_inited) {
1575                 status = set_u32(!blocked, cap);
1576                 if (ACPI_FAILURE(status))
1577                         return -ENODEV;
1578         }
1579 
1580         return 0;
1581 }
1582 
1583 static const struct rfkill_ops acer_rfkill_ops = {
1584         .set_block = acer_rfkill_set,
1585 };
1586 
1587 static struct rfkill *acer_rfkill_register(struct device *dev,
1588                                            enum rfkill_type type,
1589                                            char *name, u32 cap)
1590 {
1591         int err;
1592         struct rfkill *rfkill_dev;
1593         u32 state;
1594         acpi_status status;
1595 
1596         rfkill_dev = rfkill_alloc(name, dev, type,
1597                                   &acer_rfkill_ops,
1598                                   (void *)(unsigned long)cap);
1599         if (!rfkill_dev)
1600                 return ERR_PTR(-ENOMEM);
1601 
1602         status = get_u32(&state, cap);
1603 
1604         err = rfkill_register(rfkill_dev);
1605         if (err) {
1606                 rfkill_destroy(rfkill_dev);
1607                 return ERR_PTR(err);
1608         }
1609 
1610         if (ACPI_SUCCESS(status))
1611                 rfkill_set_sw_state(rfkill_dev, !state);
1612 
1613         return rfkill_dev;
1614 }
1615 
1616 static int acer_rfkill_init(struct device *dev)
1617 {
1618         int err;
1619 
1620         if (has_cap(ACER_CAP_WIRELESS)) {
1621                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1622                         "acer-wireless", ACER_CAP_WIRELESS);
1623                 if (IS_ERR(wireless_rfkill)) {
1624                         err = PTR_ERR(wireless_rfkill);
1625                         goto error_wireless;
1626                 }
1627         }
1628 
1629         if (has_cap(ACER_CAP_BLUETOOTH)) {
1630                 bluetooth_rfkill = acer_rfkill_register(dev,
1631                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1632                         ACER_CAP_BLUETOOTH);
1633                 if (IS_ERR(bluetooth_rfkill)) {
1634                         err = PTR_ERR(bluetooth_rfkill);
1635                         goto error_bluetooth;
1636                 }
1637         }
1638 
1639         if (has_cap(ACER_CAP_THREEG)) {
1640                 threeg_rfkill = acer_rfkill_register(dev,
1641                         RFKILL_TYPE_WWAN, "acer-threeg",
1642                         ACER_CAP_THREEG);
1643                 if (IS_ERR(threeg_rfkill)) {
1644                         err = PTR_ERR(threeg_rfkill);
1645                         goto error_threeg;
1646                 }
1647         }
1648 
1649         rfkill_inited = true;
1650 
1651         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1652             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1653                 schedule_delayed_work(&acer_rfkill_work,
1654                         round_jiffies_relative(HZ));
1655 
1656         return 0;
1657 
1658 error_threeg:
1659         if (has_cap(ACER_CAP_BLUETOOTH)) {
1660                 rfkill_unregister(bluetooth_rfkill);
1661                 rfkill_destroy(bluetooth_rfkill);
1662         }
1663 error_bluetooth:
1664         if (has_cap(ACER_CAP_WIRELESS)) {
1665                 rfkill_unregister(wireless_rfkill);
1666                 rfkill_destroy(wireless_rfkill);
1667         }
1668 error_wireless:
1669         return err;
1670 }
1671 
1672 static void acer_rfkill_exit(void)
1673 {
1674         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1675             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1676                 cancel_delayed_work_sync(&acer_rfkill_work);
1677 
1678         if (has_cap(ACER_CAP_WIRELESS)) {
1679                 rfkill_unregister(wireless_rfkill);
1680                 rfkill_destroy(wireless_rfkill);
1681         }
1682 
1683         if (has_cap(ACER_CAP_BLUETOOTH)) {
1684                 rfkill_unregister(bluetooth_rfkill);
1685                 rfkill_destroy(bluetooth_rfkill);
1686         }
1687 
1688         if (has_cap(ACER_CAP_THREEG)) {
1689                 rfkill_unregister(threeg_rfkill);
1690                 rfkill_destroy(threeg_rfkill);
1691         }
1692         return;
1693 }
1694 
1695 static void acer_wmi_notify(u32 value, void *context)
1696 {
1697         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1698         union acpi_object *obj;
1699         struct event_return_value return_value;
1700         acpi_status status;
1701         u16 device_state;
1702         const struct key_entry *key;
1703         u32 scancode;
1704 
1705         status = wmi_get_event_data(value, &response);
1706         if (status != AE_OK) {
1707                 pr_warn("bad event status 0x%x\n", status);
1708                 return;
1709         }
1710 
1711         obj = (union acpi_object *)response.pointer;
1712 
1713         if (!obj)
1714                 return;
1715         if (obj->type != ACPI_TYPE_BUFFER) {
1716                 pr_warn("Unknown response received %d\n", obj->type);
1717                 kfree(obj);
1718                 return;
1719         }
1720         if (obj->buffer.length != 8) {
1721                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1722                 kfree(obj);
1723                 return;
1724         }
1725 
1726         return_value = *((struct event_return_value *)obj->buffer.pointer);
1727         kfree(obj);
1728 
1729         switch (return_value.function) {
1730         case WMID_HOTKEY_EVENT:
1731                 device_state = return_value.device_state;
1732                 pr_debug("device state: 0x%x\n", device_state);
1733 
1734                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1735                                                         return_value.key_num);
1736                 if (!key) {
1737                         pr_warn("Unknown key number - 0x%x\n",
1738                                 return_value.key_num);
1739                 } else {
1740                         scancode = return_value.key_num;
1741                         switch (key->keycode) {
1742                         case KEY_WLAN:
1743                         case KEY_BLUETOOTH:
1744                                 if (has_cap(ACER_CAP_WIRELESS))
1745                                         rfkill_set_sw_state(wireless_rfkill,
1746                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1747                                 if (has_cap(ACER_CAP_THREEG))
1748                                         rfkill_set_sw_state(threeg_rfkill,
1749                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1750                                 if (has_cap(ACER_CAP_BLUETOOTH))
1751                                         rfkill_set_sw_state(bluetooth_rfkill,
1752                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1753                                 break;
1754                         case KEY_TOUCHPAD_TOGGLE:
1755                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1756                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1757                         }
1758                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1759                 }
1760                 break;
1761         case WMID_ACCEL_EVENT:
1762                 acer_gsensor_event();
1763                 break;
1764         default:
1765                 pr_warn("Unknown function number - %d - %d\n",
1766                         return_value.function, return_value.key_num);
1767                 break;
1768         }
1769 }
1770 
1771 static acpi_status __init
1772 wmid3_set_lm_mode(struct lm_input_params *params,
1773                   struct lm_return_value *return_value)
1774 {
1775         acpi_status status;
1776         union acpi_object *obj;
1777 
1778         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1779         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1780 
1781         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1782         if (ACPI_FAILURE(status))
1783                 return status;
1784 
1785         obj = output.pointer;
1786 
1787         if (!obj)
1788                 return AE_ERROR;
1789         else if (obj->type != ACPI_TYPE_BUFFER) {
1790                 kfree(obj);
1791                 return AE_ERROR;
1792         }
1793         if (obj->buffer.length != 4) {
1794                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1795                 kfree(obj);
1796                 return AE_ERROR;
1797         }
1798 
1799         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1800         kfree(obj);
1801 
1802         return status;
1803 }
1804 
1805 static int __init acer_wmi_enable_ec_raw(void)
1806 {
1807         struct lm_return_value return_value;
1808         acpi_status status;
1809         struct lm_input_params params = {
1810                 .function_num = 0x1,
1811                 .commun_devices = 0xFFFF,
1812                 .devices = 0xFFFF,
1813                 .lm_status = 0x00,            /* Launch Manager Deactive */
1814         };
1815 
1816         status = wmid3_set_lm_mode(&params, &return_value);
1817 
1818         if (return_value.error_code || return_value.ec_return_value)
1819                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1820                         return_value.error_code,
1821                         return_value.ec_return_value);
1822         else
1823                 pr_info("Enabled EC raw mode\n");
1824 
1825         return status;
1826 }
1827 
1828 static int __init acer_wmi_enable_lm(void)
1829 {
1830         struct lm_return_value return_value;
1831         acpi_status status;
1832         struct lm_input_params params = {
1833                 .function_num = 0x1,
1834                 .commun_devices = 0xFFFF,
1835                 .devices = 0xFFFF,
1836                 .lm_status = 0x01,            /* Launch Manager Active */
1837         };
1838 
1839         status = wmid3_set_lm_mode(&params, &return_value);
1840 
1841         if (return_value.error_code || return_value.ec_return_value)
1842                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1843                         return_value.error_code,
1844                         return_value.ec_return_value);
1845 
1846         return status;
1847 }
1848 
1849 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1850                                                 void *ctx, void **retval)
1851 {
1852         *(acpi_handle *)retval = ah;
1853         return AE_OK;
1854 }
1855 
1856 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1857                                         acpi_handle *ah)
1858 {
1859         acpi_status status;
1860         acpi_handle handle;
1861 
1862         BUG_ON(!name || !ah);
1863 
1864         handle = NULL;
1865         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1866                                         (void *)name, &handle);
1867 
1868         if (ACPI_SUCCESS(status)) {
1869                 *ah = handle;
1870                 return 0;
1871         } else {
1872                 return -ENODEV;
1873         }
1874 }
1875 
1876 static int __init acer_wmi_accel_setup(void)
1877 {
1878         int err;
1879 
1880         err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1881         if (err)
1882                 return err;
1883 
1884         interface->capability |= ACER_CAP_ACCEL;
1885 
1886         acer_wmi_accel_dev = input_allocate_device();
1887         if (!acer_wmi_accel_dev)
1888                 return -ENOMEM;
1889 
1890         acer_wmi_accel_dev->open = acer_gsensor_open;
1891 
1892         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1893         acer_wmi_accel_dev->phys = "wmi/input1";
1894         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1895         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1896         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1897         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1898         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1899 
1900         err = input_register_device(acer_wmi_accel_dev);
1901         if (err)
1902                 goto err_free_dev;
1903 
1904         return 0;
1905 
1906 err_free_dev:
1907         input_free_device(acer_wmi_accel_dev);
1908         return err;
1909 }
1910 
1911 static void acer_wmi_accel_destroy(void)
1912 {
1913         input_unregister_device(acer_wmi_accel_dev);
1914 }
1915 
1916 static int __init acer_wmi_input_setup(void)
1917 {
1918         acpi_status status;
1919         int err;
1920 
1921         acer_wmi_input_dev = input_allocate_device();
1922         if (!acer_wmi_input_dev)
1923                 return -ENOMEM;
1924 
1925         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1926         acer_wmi_input_dev->phys = "wmi/input0";
1927         acer_wmi_input_dev->id.bustype = BUS_HOST;
1928 
1929         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1930         if (err)
1931                 goto err_free_dev;
1932 
1933         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1934                                                 acer_wmi_notify, NULL);
1935         if (ACPI_FAILURE(status)) {
1936                 err = -EIO;
1937                 goto err_free_keymap;
1938         }
1939 
1940         err = input_register_device(acer_wmi_input_dev);
1941         if (err)
1942                 goto err_uninstall_notifier;
1943 
1944         return 0;
1945 
1946 err_uninstall_notifier:
1947         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1948 err_free_keymap:
1949         sparse_keymap_free(acer_wmi_input_dev);
1950 err_free_dev:
1951         input_free_device(acer_wmi_input_dev);
1952         return err;
1953 }
1954 
1955 static void acer_wmi_input_destroy(void)
1956 {
1957         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1958         sparse_keymap_free(acer_wmi_input_dev);
1959         input_unregister_device(acer_wmi_input_dev);
1960 }
1961 
1962 /*
1963  * debugfs functions
1964  */
1965 static u32 get_wmid_devices(void)
1966 {
1967         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1968         union acpi_object *obj;
1969         acpi_status status;
1970         u32 devices = 0;
1971 
1972         status = wmi_query_block(WMID_GUID2, 1, &out);
1973         if (ACPI_FAILURE(status))
1974                 return 0;
1975 
1976         obj = (union acpi_object *) out.pointer;
1977         if (obj) {
1978                 if (obj->type == ACPI_TYPE_BUFFER &&
1979                         (obj->buffer.length == sizeof(u32) ||
1980                         obj->buffer.length == sizeof(u64))) {
1981                         devices = *((u32 *) obj->buffer.pointer);
1982                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1983                         devices = (u32) obj->integer.value;
1984                 }
1985         }
1986 
1987         kfree(out.pointer);
1988         return devices;
1989 }
1990 
1991 /*
1992  * Platform device
1993  */
1994 static int acer_platform_probe(struct platform_device *device)
1995 {
1996         int err;
1997 
1998         if (has_cap(ACER_CAP_MAILLED)) {
1999                 err = acer_led_init(&device->dev);
2000                 if (err)
2001                         goto error_mailled;
2002         }
2003 
2004         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2005                 err = acer_backlight_init(&device->dev);
2006                 if (err)
2007                         goto error_brightness;
2008         }
2009 
2010         err = acer_rfkill_init(&device->dev);
2011         if (err)
2012                 goto error_rfkill;
2013 
2014         return err;
2015 
2016 error_rfkill:
2017         if (has_cap(ACER_CAP_BRIGHTNESS))
2018                 acer_backlight_exit();
2019 error_brightness:
2020         if (has_cap(ACER_CAP_MAILLED))
2021                 acer_led_exit();
2022 error_mailled:
2023         return err;
2024 }
2025 
2026 static int acer_platform_remove(struct platform_device *device)
2027 {
2028         if (has_cap(ACER_CAP_MAILLED))
2029                 acer_led_exit();
2030         if (has_cap(ACER_CAP_BRIGHTNESS))
2031                 acer_backlight_exit();
2032 
2033         acer_rfkill_exit();
2034         return 0;
2035 }
2036 
2037 #ifdef CONFIG_PM_SLEEP
2038 static int acer_suspend(struct device *dev)
2039 {
2040         u32 value;
2041         struct acer_data *data = &interface->data;
2042 
2043         if (!data)
2044                 return -ENOMEM;
2045 
2046         if (has_cap(ACER_CAP_MAILLED)) {
2047                 get_u32(&value, ACER_CAP_MAILLED);
2048                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2049                 data->mailled = value;
2050         }
2051 
2052         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2053                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2054                 data->brightness = value;
2055         }
2056 
2057         return 0;
2058 }
2059 
2060 static int acer_resume(struct device *dev)
2061 {
2062         struct acer_data *data = &interface->data;
2063 
2064         if (!data)
2065                 return -ENOMEM;
2066 
2067         if (has_cap(ACER_CAP_MAILLED))
2068                 set_u32(data->mailled, ACER_CAP_MAILLED);
2069 
2070         if (has_cap(ACER_CAP_BRIGHTNESS))
2071                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2072 
2073         if (has_cap(ACER_CAP_ACCEL))
2074                 acer_gsensor_init();
2075 
2076         return 0;
2077 }
2078 #else
2079 #define acer_suspend    NULL
2080 #define acer_resume     NULL
2081 #endif
2082 
2083 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2084 
2085 static void acer_platform_shutdown(struct platform_device *device)
2086 {
2087         struct acer_data *data = &interface->data;
2088 
2089         if (!data)
2090                 return;
2091 
2092         if (has_cap(ACER_CAP_MAILLED))
2093                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2094 }
2095 
2096 static struct platform_driver acer_platform_driver = {
2097         .driver = {
2098                 .name = "acer-wmi",
2099                 .pm = &acer_pm,
2100         },
2101         .probe = acer_platform_probe,
2102         .remove = acer_platform_remove,
2103         .shutdown = acer_platform_shutdown,
2104 };
2105 
2106 static struct platform_device *acer_platform_device;
2107 
2108 static void remove_debugfs(void)
2109 {
2110         debugfs_remove(interface->debug.devices);
2111         debugfs_remove(interface->debug.root);
2112 }
2113 
2114 static int __init create_debugfs(void)
2115 {
2116         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2117         if (!interface->debug.root) {
2118                 pr_err("Failed to create debugfs directory");
2119                 return -ENOMEM;
2120         }
2121 
2122         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2123                                         interface->debug.root,
2124                                         &interface->debug.wmid_devices);
2125         if (!interface->debug.devices)
2126                 goto error_debugfs;
2127 
2128         return 0;
2129 
2130 error_debugfs:
2131         remove_debugfs();
2132         return -ENOMEM;
2133 }
2134 
2135 static int __init acer_wmi_init(void)
2136 {
2137         int err;
2138 
2139         pr_info("Acer Laptop ACPI-WMI Extras\n");
2140 
2141         if (dmi_check_system(acer_blacklist)) {
2142                 pr_info("Blacklisted hardware detected - not loading\n");
2143                 return -ENODEV;
2144         }
2145 
2146         find_quirks();
2147 
2148         /*
2149          * The AMW0_GUID1 wmi is not only found on Acer family but also other
2150          * machines like Lenovo, Fujitsu and Medion. In the past days,
2151          * acer-wmi driver handled those non-Acer machines by quirks list.
2152          * But actually acer-wmi driver was loaded on any machines that have
2153          * AMW0_GUID1. This behavior is strange because those machines should
2154          * be supported by appropriate wmi drivers. e.g. fujitsu-laptop,
2155          * ideapad-laptop. So, here checks the machine that has AMW0_GUID1
2156          * should be in Acer/Gateway/Packard Bell white list, or it's already
2157          * in the past quirk list.
2158          */
2159         if (wmi_has_guid(AMW0_GUID1) &&
2160             !dmi_check_system(amw0_whitelist) &&
2161             quirks == &quirk_unknown) {
2162                 pr_err("Unsupported machine has AMW0_GUID1, unable to load\n");
2163                 return -ENODEV;
2164         }
2165 
2166         /*
2167          * Detect which ACPI-WMI interface we're using.
2168          */
2169         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2170                 interface = &AMW0_V2_interface;
2171 
2172         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2173                 interface = &wmid_interface;
2174 
2175         if (wmi_has_guid(WMID_GUID3))
2176                 interface = &wmid_v2_interface;
2177 
2178         if (interface)
2179                 dmi_walk(type_aa_dmi_decode, NULL);
2180 
2181         if (wmi_has_guid(WMID_GUID2) && interface) {
2182                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2183                         pr_err("Unable to detect available WMID devices\n");
2184                         return -ENODEV;
2185                 }
2186                 /* WMID always provides brightness methods */
2187                 interface->capability |= ACER_CAP_BRIGHTNESS;
2188         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2189                 pr_err("No WMID device detection method found\n");
2190                 return -ENODEV;
2191         }
2192 
2193         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2194                 interface = &AMW0_interface;
2195 
2196                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2197                         pr_err("Unable to detect available AMW0 devices\n");
2198                         return -ENODEV;
2199                 }
2200         }
2201 
2202         if (wmi_has_guid(AMW0_GUID1))
2203                 AMW0_find_mailled();
2204 
2205         if (!interface) {
2206                 pr_err("No or unsupported WMI interface, unable to load\n");
2207                 return -ENODEV;
2208         }
2209 
2210         set_quirks();
2211 
2212         if (dmi_check_system(video_vendor_dmi_table))
2213                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2214 
2215         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2216                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2217 
2218         if (wmi_has_guid(WMID_GUID3)) {
2219                 if (ec_raw_mode) {
2220                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2221                                 pr_err("Cannot enable EC raw mode\n");
2222                                 return -ENODEV;
2223                         }
2224                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2225                         pr_err("Cannot enable Launch Manager mode\n");
2226                         return -ENODEV;
2227                 }
2228         } else if (ec_raw_mode) {
2229                 pr_info("No WMID EC raw mode enable method\n");
2230         }
2231 
2232         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2233                 err = acer_wmi_input_setup();
2234                 if (err)
2235                         return err;
2236         }
2237 
2238         acer_wmi_accel_setup();
2239 
2240         err = platform_driver_register(&acer_platform_driver);
2241         if (err) {
2242                 pr_err("Unable to register platform driver\n");
2243                 goto error_platform_register;
2244         }
2245 
2246         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2247         if (!acer_platform_device) {
2248                 err = -ENOMEM;
2249                 goto error_device_alloc;
2250         }
2251 
2252         err = platform_device_add(acer_platform_device);
2253         if (err)
2254                 goto error_device_add;
2255 
2256         if (wmi_has_guid(WMID_GUID2)) {
2257                 interface->debug.wmid_devices = get_wmid_devices();
2258                 err = create_debugfs();
2259                 if (err)
2260                         goto error_create_debugfs;
2261         }
2262 
2263         /* Override any initial settings with values from the commandline */
2264         acer_commandline_init();
2265 
2266         return 0;
2267 
2268 error_create_debugfs:
2269         platform_device_del(acer_platform_device);
2270 error_device_add:
2271         platform_device_put(acer_platform_device);
2272 error_device_alloc:
2273         platform_driver_unregister(&acer_platform_driver);
2274 error_platform_register:
2275         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2276                 acer_wmi_input_destroy();
2277         if (has_cap(ACER_CAP_ACCEL))
2278                 acer_wmi_accel_destroy();
2279 
2280         return err;
2281 }
2282 
2283 static void __exit acer_wmi_exit(void)
2284 {
2285         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2286                 acer_wmi_input_destroy();
2287 
2288         if (has_cap(ACER_CAP_ACCEL))
2289                 acer_wmi_accel_destroy();
2290 
2291         remove_debugfs();
2292         platform_device_unregister(acer_platform_device);
2293         platform_driver_unregister(&acer_platform_driver);
2294 
2295         pr_info("Acer Laptop WMI Extras unloaded\n");
2296         return;
2297 }
2298 
2299 module_init(acer_wmi_init);
2300 module_exit(acer_wmi_exit);
2301 

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