Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

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[] = {
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 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 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 struct dmi_system_id acer_blacklist[] = {
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 struct dmi_system_id acer_quirks[] = {
359         {
360                 .callback = dmi_matched,
361                 .ident = "Acer Aspire 1360",
362                 .matches = {
363                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
364                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
365                 },
366                 .driver_data = &quirk_acer_aspire_1520,
367         },
368         {
369                 .callback = dmi_matched,
370                 .ident = "Acer Aspire 1520",
371                 .matches = {
372                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
373                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
374                 },
375                 .driver_data = &quirk_acer_aspire_1520,
376         },
377         {
378                 .callback = dmi_matched,
379                 .ident = "Acer Aspire 3100",
380                 .matches = {
381                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
382                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
383                 },
384                 .driver_data = &quirk_acer_travelmate_2490,
385         },
386         {
387                 .callback = dmi_matched,
388                 .ident = "Acer Aspire 3610",
389                 .matches = {
390                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
391                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
392                 },
393                 .driver_data = &quirk_acer_travelmate_2490,
394         },
395         {
396                 .callback = dmi_matched,
397                 .ident = "Acer Aspire 5100",
398                 .matches = {
399                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
400                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
401                 },
402                 .driver_data = &quirk_acer_travelmate_2490,
403         },
404         {
405                 .callback = dmi_matched,
406                 .ident = "Acer Aspire 5610",
407                 .matches = {
408                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
409                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
410                 },
411                 .driver_data = &quirk_acer_travelmate_2490,
412         },
413         {
414                 .callback = dmi_matched,
415                 .ident = "Acer Aspire 5630",
416                 .matches = {
417                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
418                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
419                 },
420                 .driver_data = &quirk_acer_travelmate_2490,
421         },
422         {
423                 .callback = dmi_matched,
424                 .ident = "Acer Aspire 5650",
425                 .matches = {
426                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
427                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
428                 },
429                 .driver_data = &quirk_acer_travelmate_2490,
430         },
431         {
432                 .callback = dmi_matched,
433                 .ident = "Acer Aspire 5680",
434                 .matches = {
435                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
436                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
437                 },
438                 .driver_data = &quirk_acer_travelmate_2490,
439         },
440         {
441                 .callback = dmi_matched,
442                 .ident = "Acer Aspire 9110",
443                 .matches = {
444                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
445                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
446                 },
447                 .driver_data = &quirk_acer_travelmate_2490,
448         },
449         {
450                 .callback = dmi_matched,
451                 .ident = "Acer TravelMate 2490",
452                 .matches = {
453                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
454                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
455                 },
456                 .driver_data = &quirk_acer_travelmate_2490,
457         },
458         {
459                 .callback = dmi_matched,
460                 .ident = "Acer TravelMate 4200",
461                 .matches = {
462                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
463                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
464                 },
465                 .driver_data = &quirk_acer_travelmate_2490,
466         },
467         {
468                 .callback = dmi_matched,
469                 .ident = "Fujitsu Siemens Amilo Li 1718",
470                 .matches = {
471                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
472                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
473                 },
474                 .driver_data = &quirk_fujitsu_amilo_li_1718,
475         },
476         {
477                 .callback = dmi_matched,
478                 .ident = "Medion MD 98300",
479                 .matches = {
480                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
481                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
482                 },
483                 .driver_data = &quirk_medion_md_98300,
484         },
485         {
486                 .callback = dmi_matched,
487                 .ident = "Lenovo Ideapad S205",
488                 .matches = {
489                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
490                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
491                 },
492                 .driver_data = &quirk_lenovo_ideapad_s205,
493         },
494         {
495                 .callback = dmi_matched,
496                 .ident = "Lenovo Ideapad S205 (Brazos)",
497                 .matches = {
498                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
499                         DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
500                 },
501                 .driver_data = &quirk_lenovo_ideapad_s205,
502         },
503         {
504                 .callback = dmi_matched,
505                 .ident = "Lenovo 3000 N200",
506                 .matches = {
507                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
508                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
509                 },
510                 .driver_data = &quirk_fujitsu_amilo_li_1718,
511         },
512         {
513                 .callback = dmi_matched,
514                 .ident = "Lenovo Ideapad S205-10382JG",
515                 .matches = {
516                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
517                         DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
518                 },
519                 .driver_data = &quirk_lenovo_ideapad_s205,
520         },
521         {
522                 .callback = dmi_matched,
523                 .ident = "Lenovo Ideapad S205-1038DPG",
524                 .matches = {
525                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
526                         DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
527                 },
528                 .driver_data = &quirk_lenovo_ideapad_s205,
529         },
530         {}
531 };
532 
533 static int video_set_backlight_video_vendor(const struct dmi_system_id *d)
534 {
535         interface->capability &= ~ACER_CAP_BRIGHTNESS;
536         pr_info("Brightness must be controlled by generic video driver\n");
537         return 0;
538 }
539 
540 static const struct dmi_system_id video_vendor_dmi_table[] = {
541         {
542                 .callback = video_set_backlight_video_vendor,
543                 .ident = "Acer TravelMate 4750",
544                 .matches = {
545                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
546                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
547                 },
548         },
549         {
550                 .callback = video_set_backlight_video_vendor,
551                 .ident = "Acer Extensa 5235",
552                 .matches = {
553                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
554                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
555                 },
556         },
557         {
558                 .callback = video_set_backlight_video_vendor,
559                 .ident = "Acer TravelMate 5760",
560                 .matches = {
561                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
562                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
563                 },
564         },
565         {
566                 .callback = video_set_backlight_video_vendor,
567                 .ident = "Acer Aspire 5750",
568                 .matches = {
569                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
570                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
571                 },
572         },
573         {
574                 .callback = video_set_backlight_video_vendor,
575                 .ident = "Acer Aspire 5741",
576                 .matches = {
577                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
578                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
579                 },
580         },
581         {}
582 };
583 
584 /* Find which quirks are needed for a particular vendor/ model pair */
585 static void find_quirks(void)
586 {
587         if (!force_series) {
588                 dmi_check_system(acer_quirks);
589         } else if (force_series == 2490) {
590                 quirks = &quirk_acer_travelmate_2490;
591         }
592 
593         if (quirks == NULL)
594                 quirks = &quirk_unknown;
595 
596         set_quirks();
597 }
598 
599 /*
600  * General interface convenience methods
601  */
602 
603 static bool has_cap(u32 cap)
604 {
605         if ((interface->capability & cap) != 0)
606                 return 1;
607 
608         return 0;
609 }
610 
611 /*
612  * AMW0 (V1) interface
613  */
614 struct wmab_args {
615         u32 eax;
616         u32 ebx;
617         u32 ecx;
618         u32 edx;
619 };
620 
621 struct wmab_ret {
622         u32 eax;
623         u32 ebx;
624         u32 ecx;
625         u32 edx;
626         u32 eex;
627 };
628 
629 static acpi_status wmab_execute(struct wmab_args *regbuf,
630 struct acpi_buffer *result)
631 {
632         struct acpi_buffer input;
633         acpi_status status;
634         input.length = sizeof(struct wmab_args);
635         input.pointer = (u8 *)regbuf;
636 
637         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
638 
639         return status;
640 }
641 
642 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
643 {
644         int err;
645         u8 result;
646 
647         switch (cap) {
648         case ACER_CAP_MAILLED:
649                 switch (quirks->mailled) {
650                 default:
651                         err = ec_read(0xA, &result);
652                         if (err)
653                                 return AE_ERROR;
654                         *value = (result >> 7) & 0x1;
655                         return AE_OK;
656                 }
657                 break;
658         case ACER_CAP_WIRELESS:
659                 switch (quirks->wireless) {
660                 case 1:
661                         err = ec_read(0x7B, &result);
662                         if (err)
663                                 return AE_ERROR;
664                         *value = result & 0x1;
665                         return AE_OK;
666                 case 2:
667                         err = ec_read(0x71, &result);
668                         if (err)
669                                 return AE_ERROR;
670                         *value = result & 0x1;
671                         return AE_OK;
672                 case 3:
673                         err = ec_read(0x78, &result);
674                         if (err)
675                                 return AE_ERROR;
676                         *value = result & 0x1;
677                         return AE_OK;
678                 default:
679                         err = ec_read(0xA, &result);
680                         if (err)
681                                 return AE_ERROR;
682                         *value = (result >> 2) & 0x1;
683                         return AE_OK;
684                 }
685                 break;
686         case ACER_CAP_BLUETOOTH:
687                 switch (quirks->bluetooth) {
688                 default:
689                         err = ec_read(0xA, &result);
690                         if (err)
691                                 return AE_ERROR;
692                         *value = (result >> 4) & 0x1;
693                         return AE_OK;
694                 }
695                 break;
696         case ACER_CAP_BRIGHTNESS:
697                 switch (quirks->brightness) {
698                 default:
699                         err = ec_read(0x83, &result);
700                         if (err)
701                                 return AE_ERROR;
702                         *value = result;
703                         return AE_OK;
704                 }
705                 break;
706         default:
707                 return AE_ERROR;
708         }
709         return AE_OK;
710 }
711 
712 static acpi_status AMW0_set_u32(u32 value, u32 cap)
713 {
714         struct wmab_args args;
715 
716         args.eax = ACER_AMW0_WRITE;
717         args.ebx = value ? (1<<8) : 0;
718         args.ecx = args.edx = 0;
719 
720         switch (cap) {
721         case ACER_CAP_MAILLED:
722                 if (value > 1)
723                         return AE_BAD_PARAMETER;
724                 args.ebx |= ACER_AMW0_MAILLED_MASK;
725                 break;
726         case ACER_CAP_WIRELESS:
727                 if (value > 1)
728                         return AE_BAD_PARAMETER;
729                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
730                 break;
731         case ACER_CAP_BLUETOOTH:
732                 if (value > 1)
733                         return AE_BAD_PARAMETER;
734                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
735                 break;
736         case ACER_CAP_BRIGHTNESS:
737                 if (value > max_brightness)
738                         return AE_BAD_PARAMETER;
739                 switch (quirks->brightness) {
740                 default:
741                         return ec_write(0x83, value);
742                         break;
743                 }
744         default:
745                 return AE_ERROR;
746         }
747 
748         /* Actually do the set */
749         return wmab_execute(&args, NULL);
750 }
751 
752 static acpi_status AMW0_find_mailled(void)
753 {
754         struct wmab_args args;
755         struct wmab_ret ret;
756         acpi_status status = AE_OK;
757         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
758         union acpi_object *obj;
759 
760         args.eax = 0x86;
761         args.ebx = args.ecx = args.edx = 0;
762 
763         status = wmab_execute(&args, &out);
764         if (ACPI_FAILURE(status))
765                 return status;
766 
767         obj = (union acpi_object *) out.pointer;
768         if (obj && obj->type == ACPI_TYPE_BUFFER &&
769         obj->buffer.length == sizeof(struct wmab_ret)) {
770                 ret = *((struct wmab_ret *) obj->buffer.pointer);
771         } else {
772                 kfree(out.pointer);
773                 return AE_ERROR;
774         }
775 
776         if (ret.eex & 0x1)
777                 interface->capability |= ACER_CAP_MAILLED;
778 
779         kfree(out.pointer);
780 
781         return AE_OK;
782 }
783 
784 static int AMW0_set_cap_acpi_check_device_found;
785 
786 static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
787         u32 level, void *context, void **retval)
788 {
789         AMW0_set_cap_acpi_check_device_found = 1;
790         return AE_OK;
791 }
792 
793 static const struct acpi_device_id norfkill_ids[] = {
794         { "VPC2004", 0},
795         { "IBM0068", 0},
796         { "LEN0068", 0},
797         { "SNY5001", 0},        /* sony-laptop in charge */
798         { "", 0},
799 };
800 
801 static int AMW0_set_cap_acpi_check_device(void)
802 {
803         const struct acpi_device_id *id;
804 
805         for (id = norfkill_ids; id->id[0]; id++)
806                 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
807                                 NULL, NULL);
808         return AMW0_set_cap_acpi_check_device_found;
809 }
810 
811 static acpi_status AMW0_set_capabilities(void)
812 {
813         struct wmab_args args;
814         struct wmab_ret ret;
815         acpi_status status;
816         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
817         union acpi_object *obj;
818 
819         /*
820          * On laptops with this strange GUID (non Acer), normal probing doesn't
821          * work.
822          */
823         if (wmi_has_guid(AMW0_GUID2)) {
824                 if ((quirks != &quirk_unknown) ||
825                     !AMW0_set_cap_acpi_check_device())
826                         interface->capability |= ACER_CAP_WIRELESS;
827                 return AE_OK;
828         }
829 
830         args.eax = ACER_AMW0_WRITE;
831         args.ecx = args.edx = 0;
832 
833         args.ebx = 0xa2 << 8;
834         args.ebx |= ACER_AMW0_WIRELESS_MASK;
835 
836         status = wmab_execute(&args, &out);
837         if (ACPI_FAILURE(status))
838                 return status;
839 
840         obj = out.pointer;
841         if (obj && obj->type == ACPI_TYPE_BUFFER &&
842         obj->buffer.length == sizeof(struct wmab_ret)) {
843                 ret = *((struct wmab_ret *) obj->buffer.pointer);
844         } else {
845                 status = AE_ERROR;
846                 goto out;
847         }
848 
849         if (ret.eax & 0x1)
850                 interface->capability |= ACER_CAP_WIRELESS;
851 
852         args.ebx = 2 << 8;
853         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
854 
855         /*
856          * It's ok to use existing buffer for next wmab_execute call.
857          * But we need to kfree(out.pointer) if next wmab_execute fail.
858          */
859         status = wmab_execute(&args, &out);
860         if (ACPI_FAILURE(status))
861                 goto out;
862 
863         obj = (union acpi_object *) out.pointer;
864         if (obj && obj->type == ACPI_TYPE_BUFFER
865         && obj->buffer.length == sizeof(struct wmab_ret)) {
866                 ret = *((struct wmab_ret *) obj->buffer.pointer);
867         } else {
868                 status = AE_ERROR;
869                 goto out;
870         }
871 
872         if (ret.eax & 0x1)
873                 interface->capability |= ACER_CAP_BLUETOOTH;
874 
875         /*
876          * This appears to be safe to enable, since all Wistron based laptops
877          * appear to use the same EC register for brightness, even if they
878          * differ for wireless, etc
879          */
880         if (quirks->brightness >= 0)
881                 interface->capability |= ACER_CAP_BRIGHTNESS;
882 
883         status = AE_OK;
884 out:
885         kfree(out.pointer);
886         return status;
887 }
888 
889 static struct wmi_interface AMW0_interface = {
890         .type = ACER_AMW0,
891 };
892 
893 static struct wmi_interface AMW0_V2_interface = {
894         .type = ACER_AMW0_V2,
895 };
896 
897 /*
898  * New interface (The WMID interface)
899  */
900 static acpi_status
901 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
902 {
903         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
904         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
905         union acpi_object *obj;
906         u32 tmp = 0;
907         acpi_status status;
908 
909         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
910 
911         if (ACPI_FAILURE(status))
912                 return status;
913 
914         obj = (union acpi_object *) result.pointer;
915         if (obj) {
916                 if (obj->type == ACPI_TYPE_BUFFER &&
917                         (obj->buffer.length == sizeof(u32) ||
918                         obj->buffer.length == sizeof(u64))) {
919                         tmp = *((u32 *) obj->buffer.pointer);
920                 } else if (obj->type == ACPI_TYPE_INTEGER) {
921                         tmp = (u32) obj->integer.value;
922                 }
923         }
924 
925         if (out)
926                 *out = tmp;
927 
928         kfree(result.pointer);
929 
930         return status;
931 }
932 
933 static acpi_status WMID_get_u32(u32 *value, u32 cap)
934 {
935         acpi_status status;
936         u8 tmp;
937         u32 result, method_id = 0;
938 
939         switch (cap) {
940         case ACER_CAP_WIRELESS:
941                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
942                 break;
943         case ACER_CAP_BLUETOOTH:
944                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
945                 break;
946         case ACER_CAP_BRIGHTNESS:
947                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
948                 break;
949         case ACER_CAP_THREEG:
950                 method_id = ACER_WMID_GET_THREEG_METHODID;
951                 break;
952         case ACER_CAP_MAILLED:
953                 if (quirks->mailled == 1) {
954                         ec_read(0x9f, &tmp);
955                         *value = tmp & 0x1;
956                         return 0;
957                 }
958         default:
959                 return AE_ERROR;
960         }
961         status = WMI_execute_u32(method_id, 0, &result);
962 
963         if (ACPI_SUCCESS(status))
964                 *value = (u8)result;
965 
966         return status;
967 }
968 
969 static acpi_status WMID_set_u32(u32 value, u32 cap)
970 {
971         u32 method_id = 0;
972         char param;
973 
974         switch (cap) {
975         case ACER_CAP_BRIGHTNESS:
976                 if (value > max_brightness)
977                         return AE_BAD_PARAMETER;
978                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
979                 break;
980         case ACER_CAP_WIRELESS:
981                 if (value > 1)
982                         return AE_BAD_PARAMETER;
983                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
984                 break;
985         case ACER_CAP_BLUETOOTH:
986                 if (value > 1)
987                         return AE_BAD_PARAMETER;
988                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
989                 break;
990         case ACER_CAP_THREEG:
991                 if (value > 1)
992                         return AE_BAD_PARAMETER;
993                 method_id = ACER_WMID_SET_THREEG_METHODID;
994                 break;
995         case ACER_CAP_MAILLED:
996                 if (value > 1)
997                         return AE_BAD_PARAMETER;
998                 if (quirks->mailled == 1) {
999                         param = value ? 0x92 : 0x93;
1000                         i8042_lock_chip();
1001                         i8042_command(&param, 0x1059);
1002                         i8042_unlock_chip();
1003                         return 0;
1004                 }
1005                 break;
1006         default:
1007                 return AE_ERROR;
1008         }
1009         return WMI_execute_u32(method_id, (u32)value, NULL);
1010 }
1011 
1012 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1013 {
1014         struct wmid3_gds_return_value return_value;
1015         acpi_status status;
1016         union acpi_object *obj;
1017         struct wmid3_gds_get_input_param params = {
1018                 .function_num = 0x1,
1019                 .hotkey_number = commun_fn_key_number,
1020                 .devices = device,
1021         };
1022         struct acpi_buffer input = {
1023                 sizeof(struct wmid3_gds_get_input_param),
1024                 &params
1025         };
1026         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1027 
1028         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1029         if (ACPI_FAILURE(status))
1030                 return status;
1031 
1032         obj = output.pointer;
1033 
1034         if (!obj)
1035                 return AE_ERROR;
1036         else if (obj->type != ACPI_TYPE_BUFFER) {
1037                 kfree(obj);
1038                 return AE_ERROR;
1039         }
1040         if (obj->buffer.length != 8) {
1041                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1042                 kfree(obj);
1043                 return AE_ERROR;
1044         }
1045 
1046         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1047         kfree(obj);
1048 
1049         if (return_value.error_code || return_value.ec_return_value)
1050                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1051                         device,
1052                         return_value.error_code,
1053                         return_value.ec_return_value);
1054         else
1055                 *value = !!(return_value.devices & device);
1056 
1057         return status;
1058 }
1059 
1060 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1061 {
1062         u16 device;
1063 
1064         switch (cap) {
1065         case ACER_CAP_WIRELESS:
1066                 device = ACER_WMID3_GDS_WIRELESS;
1067                 break;
1068         case ACER_CAP_BLUETOOTH:
1069                 device = ACER_WMID3_GDS_BLUETOOTH;
1070                 break;
1071         case ACER_CAP_THREEG:
1072                 device = ACER_WMID3_GDS_THREEG;
1073                 break;
1074         default:
1075                 return AE_ERROR;
1076         }
1077         return wmid3_get_device_status(value, device);
1078 }
1079 
1080 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1081 {
1082         struct wmid3_gds_return_value return_value;
1083         acpi_status status;
1084         union acpi_object *obj;
1085         u16 devices;
1086         struct wmid3_gds_get_input_param get_params = {
1087                 .function_num = 0x1,
1088                 .hotkey_number = commun_fn_key_number,
1089                 .devices = commun_func_bitmap,
1090         };
1091         struct acpi_buffer get_input = {
1092                 sizeof(struct wmid3_gds_get_input_param),
1093                 &get_params
1094         };
1095         struct wmid3_gds_set_input_param set_params = {
1096                 .function_num = 0x2,
1097                 .hotkey_number = commun_fn_key_number,
1098                 .devices = commun_func_bitmap,
1099         };
1100         struct acpi_buffer set_input = {
1101                 sizeof(struct wmid3_gds_set_input_param),
1102                 &set_params
1103         };
1104         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1105         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1106 
1107         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1108         if (ACPI_FAILURE(status))
1109                 return status;
1110 
1111         obj = output.pointer;
1112 
1113         if (!obj)
1114                 return AE_ERROR;
1115         else if (obj->type != ACPI_TYPE_BUFFER) {
1116                 kfree(obj);
1117                 return AE_ERROR;
1118         }
1119         if (obj->buffer.length != 8) {
1120                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1121                 kfree(obj);
1122                 return AE_ERROR;
1123         }
1124 
1125         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1126         kfree(obj);
1127 
1128         if (return_value.error_code || return_value.ec_return_value) {
1129                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1130                         return_value.error_code,
1131                         return_value.ec_return_value);
1132                 return status;
1133         }
1134 
1135         devices = return_value.devices;
1136         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1137 
1138         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1139         if (ACPI_FAILURE(status))
1140                 return status;
1141 
1142         obj = output2.pointer;
1143 
1144         if (!obj)
1145                 return AE_ERROR;
1146         else if (obj->type != ACPI_TYPE_BUFFER) {
1147                 kfree(obj);
1148                 return AE_ERROR;
1149         }
1150         if (obj->buffer.length != 4) {
1151                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1152                 kfree(obj);
1153                 return AE_ERROR;
1154         }
1155 
1156         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1157         kfree(obj);
1158 
1159         if (return_value.error_code || return_value.ec_return_value)
1160                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1161                         return_value.error_code,
1162                         return_value.ec_return_value);
1163 
1164         return status;
1165 }
1166 
1167 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1168 {
1169         u16 device;
1170 
1171         switch (cap) {
1172         case ACER_CAP_WIRELESS:
1173                 device = ACER_WMID3_GDS_WIRELESS;
1174                 break;
1175         case ACER_CAP_BLUETOOTH:
1176                 device = ACER_WMID3_GDS_BLUETOOTH;
1177                 break;
1178         case ACER_CAP_THREEG:
1179                 device = ACER_WMID3_GDS_THREEG;
1180                 break;
1181         default:
1182                 return AE_ERROR;
1183         }
1184         return wmid3_set_device_status(value, device);
1185 }
1186 
1187 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1188 {
1189         struct hotkey_function_type_aa *type_aa;
1190 
1191         /* We are looking for OEM-specific Type AAh */
1192         if (header->type != 0xAA)
1193                 return;
1194 
1195         has_type_aa = true;
1196         type_aa = (struct hotkey_function_type_aa *) header;
1197 
1198         pr_info("Function bitmap for Communication Button: 0x%x\n",
1199                 type_aa->commun_func_bitmap);
1200         commun_func_bitmap = type_aa->commun_func_bitmap;
1201 
1202         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1203                 interface->capability |= ACER_CAP_WIRELESS;
1204         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1205                 interface->capability |= ACER_CAP_THREEG;
1206         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1207                 interface->capability |= ACER_CAP_BLUETOOTH;
1208 
1209         commun_fn_key_number = type_aa->commun_fn_key_number;
1210 }
1211 
1212 static acpi_status WMID_set_capabilities(void)
1213 {
1214         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1215         union acpi_object *obj;
1216         acpi_status status;
1217         u32 devices;
1218 
1219         status = wmi_query_block(WMID_GUID2, 1, &out);
1220         if (ACPI_FAILURE(status))
1221                 return status;
1222 
1223         obj = (union acpi_object *) out.pointer;
1224         if (obj) {
1225                 if (obj->type == ACPI_TYPE_BUFFER &&
1226                         (obj->buffer.length == sizeof(u32) ||
1227                         obj->buffer.length == sizeof(u64))) {
1228                         devices = *((u32 *) obj->buffer.pointer);
1229                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1230                         devices = (u32) obj->integer.value;
1231                 } else {
1232                         kfree(out.pointer);
1233                         return AE_ERROR;
1234                 }
1235         } else {
1236                 kfree(out.pointer);
1237                 return AE_ERROR;
1238         }
1239 
1240         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1241         if (devices & 0x07)
1242                 interface->capability |= ACER_CAP_WIRELESS;
1243         if (devices & 0x40)
1244                 interface->capability |= ACER_CAP_THREEG;
1245         if (devices & 0x10)
1246                 interface->capability |= ACER_CAP_BLUETOOTH;
1247 
1248         if (!(devices & 0x20))
1249                 max_brightness = 0x9;
1250 
1251         kfree(out.pointer);
1252         return status;
1253 }
1254 
1255 static struct wmi_interface wmid_interface = {
1256         .type = ACER_WMID,
1257 };
1258 
1259 static struct wmi_interface wmid_v2_interface = {
1260         .type = ACER_WMID_v2,
1261 };
1262 
1263 /*
1264  * Generic Device (interface-independent)
1265  */
1266 
1267 static acpi_status get_u32(u32 *value, u32 cap)
1268 {
1269         acpi_status status = AE_ERROR;
1270 
1271         switch (interface->type) {
1272         case ACER_AMW0:
1273                 status = AMW0_get_u32(value, cap);
1274                 break;
1275         case ACER_AMW0_V2:
1276                 if (cap == ACER_CAP_MAILLED) {
1277                         status = AMW0_get_u32(value, cap);
1278                         break;
1279                 }
1280         case ACER_WMID:
1281                 status = WMID_get_u32(value, cap);
1282                 break;
1283         case ACER_WMID_v2:
1284                 if (cap & (ACER_CAP_WIRELESS |
1285                            ACER_CAP_BLUETOOTH |
1286                            ACER_CAP_THREEG))
1287                         status = wmid_v2_get_u32(value, cap);
1288                 else if (wmi_has_guid(WMID_GUID2))
1289                         status = WMID_get_u32(value, cap);
1290                 break;
1291         }
1292 
1293         return status;
1294 }
1295 
1296 static acpi_status set_u32(u32 value, u32 cap)
1297 {
1298         acpi_status status;
1299 
1300         if (interface->capability & cap) {
1301                 switch (interface->type) {
1302                 case ACER_AMW0:
1303                         return AMW0_set_u32(value, cap);
1304                 case ACER_AMW0_V2:
1305                         if (cap == ACER_CAP_MAILLED)
1306                                 return AMW0_set_u32(value, cap);
1307 
1308                         /*
1309                          * On some models, some WMID methods don't toggle
1310                          * properly. For those cases, we want to run the AMW0
1311                          * method afterwards to be certain we've really toggled
1312                          * the device state.
1313                          */
1314                         if (cap == ACER_CAP_WIRELESS ||
1315                                 cap == ACER_CAP_BLUETOOTH) {
1316                                 status = WMID_set_u32(value, cap);
1317                                 if (ACPI_FAILURE(status))
1318                                         return status;
1319 
1320                                 return AMW0_set_u32(value, cap);
1321                         }
1322                 case ACER_WMID:
1323                         return WMID_set_u32(value, cap);
1324                 case ACER_WMID_v2:
1325                         if (cap & (ACER_CAP_WIRELESS |
1326                                    ACER_CAP_BLUETOOTH |
1327                                    ACER_CAP_THREEG))
1328                                 return wmid_v2_set_u32(value, cap);
1329                         else if (wmi_has_guid(WMID_GUID2))
1330                                 return WMID_set_u32(value, cap);
1331                 default:
1332                         return AE_BAD_PARAMETER;
1333                 }
1334         }
1335         return AE_BAD_PARAMETER;
1336 }
1337 
1338 static void __init acer_commandline_init(void)
1339 {
1340         /*
1341          * These will all fail silently if the value given is invalid, or the
1342          * capability isn't available on the given interface
1343          */
1344         if (mailled >= 0)
1345                 set_u32(mailled, ACER_CAP_MAILLED);
1346         if (!has_type_aa && threeg >= 0)
1347                 set_u32(threeg, ACER_CAP_THREEG);
1348         if (brightness >= 0)
1349                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1350 }
1351 
1352 /*
1353  * LED device (Mail LED only, no other LEDs known yet)
1354  */
1355 static void mail_led_set(struct led_classdev *led_cdev,
1356 enum led_brightness value)
1357 {
1358         set_u32(value, ACER_CAP_MAILLED);
1359 }
1360 
1361 static struct led_classdev mail_led = {
1362         .name = "acer-wmi::mail",
1363         .brightness_set = mail_led_set,
1364 };
1365 
1366 static int acer_led_init(struct device *dev)
1367 {
1368         return led_classdev_register(dev, &mail_led);
1369 }
1370 
1371 static void acer_led_exit(void)
1372 {
1373         set_u32(LED_OFF, ACER_CAP_MAILLED);
1374         led_classdev_unregister(&mail_led);
1375 }
1376 
1377 /*
1378  * Backlight device
1379  */
1380 static struct backlight_device *acer_backlight_device;
1381 
1382 static int read_brightness(struct backlight_device *bd)
1383 {
1384         u32 value;
1385         get_u32(&value, ACER_CAP_BRIGHTNESS);
1386         return value;
1387 }
1388 
1389 static int update_bl_status(struct backlight_device *bd)
1390 {
1391         int intensity = bd->props.brightness;
1392 
1393         if (bd->props.power != FB_BLANK_UNBLANK)
1394                 intensity = 0;
1395         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1396                 intensity = 0;
1397 
1398         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1399 
1400         return 0;
1401 }
1402 
1403 static const struct backlight_ops acer_bl_ops = {
1404         .get_brightness = read_brightness,
1405         .update_status = update_bl_status,
1406 };
1407 
1408 static int acer_backlight_init(struct device *dev)
1409 {
1410         struct backlight_properties props;
1411         struct backlight_device *bd;
1412 
1413         memset(&props, 0, sizeof(struct backlight_properties));
1414         props.type = BACKLIGHT_PLATFORM;
1415         props.max_brightness = max_brightness;
1416         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1417                                        &props);
1418         if (IS_ERR(bd)) {
1419                 pr_err("Could not register Acer backlight device\n");
1420                 acer_backlight_device = NULL;
1421                 return PTR_ERR(bd);
1422         }
1423 
1424         acer_backlight_device = bd;
1425 
1426         bd->props.power = FB_BLANK_UNBLANK;
1427         bd->props.brightness = read_brightness(bd);
1428         backlight_update_status(bd);
1429         return 0;
1430 }
1431 
1432 static void acer_backlight_exit(void)
1433 {
1434         backlight_device_unregister(acer_backlight_device);
1435 }
1436 
1437 /*
1438  * Accelerometer device
1439  */
1440 static acpi_handle gsensor_handle;
1441 
1442 static int acer_gsensor_init(void)
1443 {
1444         acpi_status status;
1445         struct acpi_buffer output;
1446         union acpi_object out_obj;
1447 
1448         output.length = sizeof(out_obj);
1449         output.pointer = &out_obj;
1450         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1451         if (ACPI_FAILURE(status))
1452                 return -1;
1453 
1454         return 0;
1455 }
1456 
1457 static int acer_gsensor_open(struct input_dev *input)
1458 {
1459         return acer_gsensor_init();
1460 }
1461 
1462 static int acer_gsensor_event(void)
1463 {
1464         acpi_status status;
1465         struct acpi_buffer output;
1466         union acpi_object out_obj[5];
1467 
1468         if (!has_cap(ACER_CAP_ACCEL))
1469                 return -1;
1470 
1471         output.length = sizeof(out_obj);
1472         output.pointer = out_obj;
1473 
1474         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1475         if (ACPI_FAILURE(status))
1476                 return -1;
1477 
1478         if (out_obj->package.count != 4)
1479                 return -1;
1480 
1481         input_report_abs(acer_wmi_accel_dev, ABS_X,
1482                 (s16)out_obj->package.elements[0].integer.value);
1483         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1484                 (s16)out_obj->package.elements[1].integer.value);
1485         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1486                 (s16)out_obj->package.elements[2].integer.value);
1487         input_sync(acer_wmi_accel_dev);
1488         return 0;
1489 }
1490 
1491 /*
1492  * Rfkill devices
1493  */
1494 static void acer_rfkill_update(struct work_struct *ignored);
1495 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1496 static void acer_rfkill_update(struct work_struct *ignored)
1497 {
1498         u32 state;
1499         acpi_status status;
1500 
1501         if (has_cap(ACER_CAP_WIRELESS)) {
1502                 status = get_u32(&state, ACER_CAP_WIRELESS);
1503                 if (ACPI_SUCCESS(status)) {
1504                         if (quirks->wireless == 3)
1505                                 rfkill_set_hw_state(wireless_rfkill, !state);
1506                         else
1507                                 rfkill_set_sw_state(wireless_rfkill, !state);
1508                 }
1509         }
1510 
1511         if (has_cap(ACER_CAP_BLUETOOTH)) {
1512                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1513                 if (ACPI_SUCCESS(status))
1514                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1515         }
1516 
1517         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1518                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1519                 if (ACPI_SUCCESS(status))
1520                         rfkill_set_sw_state(threeg_rfkill, !state);
1521         }
1522 
1523         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1524 }
1525 
1526 static int acer_rfkill_set(void *data, bool blocked)
1527 {
1528         acpi_status status;
1529         u32 cap = (unsigned long)data;
1530 
1531         if (rfkill_inited) {
1532                 status = set_u32(!blocked, cap);
1533                 if (ACPI_FAILURE(status))
1534                         return -ENODEV;
1535         }
1536 
1537         return 0;
1538 }
1539 
1540 static const struct rfkill_ops acer_rfkill_ops = {
1541         .set_block = acer_rfkill_set,
1542 };
1543 
1544 static struct rfkill *acer_rfkill_register(struct device *dev,
1545                                            enum rfkill_type type,
1546                                            char *name, u32 cap)
1547 {
1548         int err;
1549         struct rfkill *rfkill_dev;
1550         u32 state;
1551         acpi_status status;
1552 
1553         rfkill_dev = rfkill_alloc(name, dev, type,
1554                                   &acer_rfkill_ops,
1555                                   (void *)(unsigned long)cap);
1556         if (!rfkill_dev)
1557                 return ERR_PTR(-ENOMEM);
1558 
1559         status = get_u32(&state, cap);
1560 
1561         err = rfkill_register(rfkill_dev);
1562         if (err) {
1563                 rfkill_destroy(rfkill_dev);
1564                 return ERR_PTR(err);
1565         }
1566 
1567         if (ACPI_SUCCESS(status))
1568                 rfkill_set_sw_state(rfkill_dev, !state);
1569 
1570         return rfkill_dev;
1571 }
1572 
1573 static int acer_rfkill_init(struct device *dev)
1574 {
1575         int err;
1576 
1577         if (has_cap(ACER_CAP_WIRELESS)) {
1578                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1579                         "acer-wireless", ACER_CAP_WIRELESS);
1580                 if (IS_ERR(wireless_rfkill)) {
1581                         err = PTR_ERR(wireless_rfkill);
1582                         goto error_wireless;
1583                 }
1584         }
1585 
1586         if (has_cap(ACER_CAP_BLUETOOTH)) {
1587                 bluetooth_rfkill = acer_rfkill_register(dev,
1588                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1589                         ACER_CAP_BLUETOOTH);
1590                 if (IS_ERR(bluetooth_rfkill)) {
1591                         err = PTR_ERR(bluetooth_rfkill);
1592                         goto error_bluetooth;
1593                 }
1594         }
1595 
1596         if (has_cap(ACER_CAP_THREEG)) {
1597                 threeg_rfkill = acer_rfkill_register(dev,
1598                         RFKILL_TYPE_WWAN, "acer-threeg",
1599                         ACER_CAP_THREEG);
1600                 if (IS_ERR(threeg_rfkill)) {
1601                         err = PTR_ERR(threeg_rfkill);
1602                         goto error_threeg;
1603                 }
1604         }
1605 
1606         rfkill_inited = true;
1607 
1608         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1609             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1610                 schedule_delayed_work(&acer_rfkill_work,
1611                         round_jiffies_relative(HZ));
1612 
1613         return 0;
1614 
1615 error_threeg:
1616         if (has_cap(ACER_CAP_BLUETOOTH)) {
1617                 rfkill_unregister(bluetooth_rfkill);
1618                 rfkill_destroy(bluetooth_rfkill);
1619         }
1620 error_bluetooth:
1621         if (has_cap(ACER_CAP_WIRELESS)) {
1622                 rfkill_unregister(wireless_rfkill);
1623                 rfkill_destroy(wireless_rfkill);
1624         }
1625 error_wireless:
1626         return err;
1627 }
1628 
1629 static void acer_rfkill_exit(void)
1630 {
1631         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1632             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1633                 cancel_delayed_work_sync(&acer_rfkill_work);
1634 
1635         if (has_cap(ACER_CAP_WIRELESS)) {
1636                 rfkill_unregister(wireless_rfkill);
1637                 rfkill_destroy(wireless_rfkill);
1638         }
1639 
1640         if (has_cap(ACER_CAP_BLUETOOTH)) {
1641                 rfkill_unregister(bluetooth_rfkill);
1642                 rfkill_destroy(bluetooth_rfkill);
1643         }
1644 
1645         if (has_cap(ACER_CAP_THREEG)) {
1646                 rfkill_unregister(threeg_rfkill);
1647                 rfkill_destroy(threeg_rfkill);
1648         }
1649         return;
1650 }
1651 
1652 /*
1653  * sysfs interface
1654  */
1655 static ssize_t show_bool_threeg(struct device *dev,
1656         struct device_attribute *attr, char *buf)
1657 {
1658         u32 result; \
1659         acpi_status status;
1660 
1661         pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1662                 current->comm);
1663         status = get_u32(&result, ACER_CAP_THREEG);
1664         if (ACPI_SUCCESS(status))
1665                 return sprintf(buf, "%u\n", result);
1666         return sprintf(buf, "Read error\n");
1667 }
1668 
1669 static ssize_t set_bool_threeg(struct device *dev,
1670         struct device_attribute *attr, const char *buf, size_t count)
1671 {
1672         u32 tmp = simple_strtoul(buf, NULL, 10);
1673         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1674         pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1675                 current->comm);
1676         if (ACPI_FAILURE(status))
1677                 return -EINVAL;
1678         return count;
1679 }
1680 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1681         set_bool_threeg);
1682 
1683 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1684         char *buf)
1685 {
1686         pr_info("This interface sysfs will be removed in 2012 - used by: %s\n",
1687                 current->comm);
1688         switch (interface->type) {
1689         case ACER_AMW0:
1690                 return sprintf(buf, "AMW0\n");
1691         case ACER_AMW0_V2:
1692                 return sprintf(buf, "AMW0 v2\n");
1693         case ACER_WMID:
1694                 return sprintf(buf, "WMID\n");
1695         case ACER_WMID_v2:
1696                 return sprintf(buf, "WMID v2\n");
1697         default:
1698                 return sprintf(buf, "Error!\n");
1699         }
1700 }
1701 
1702 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1703 
1704 static void acer_wmi_notify(u32 value, void *context)
1705 {
1706         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1707         union acpi_object *obj;
1708         struct event_return_value return_value;
1709         acpi_status status;
1710         u16 device_state;
1711         const struct key_entry *key;
1712         u32 scancode;
1713 
1714         status = wmi_get_event_data(value, &response);
1715         if (status != AE_OK) {
1716                 pr_warn("bad event status 0x%x\n", status);
1717                 return;
1718         }
1719 
1720         obj = (union acpi_object *)response.pointer;
1721 
1722         if (!obj)
1723                 return;
1724         if (obj->type != ACPI_TYPE_BUFFER) {
1725                 pr_warn("Unknown response received %d\n", obj->type);
1726                 kfree(obj);
1727                 return;
1728         }
1729         if (obj->buffer.length != 8) {
1730                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1731                 kfree(obj);
1732                 return;
1733         }
1734 
1735         return_value = *((struct event_return_value *)obj->buffer.pointer);
1736         kfree(obj);
1737 
1738         switch (return_value.function) {
1739         case WMID_HOTKEY_EVENT:
1740                 device_state = return_value.device_state;
1741                 pr_debug("device state: 0x%x\n", device_state);
1742 
1743                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1744                                                         return_value.key_num);
1745                 if (!key) {
1746                         pr_warn("Unknown key number - 0x%x\n",
1747                                 return_value.key_num);
1748                 } else {
1749                         scancode = return_value.key_num;
1750                         switch (key->keycode) {
1751                         case KEY_WLAN:
1752                         case KEY_BLUETOOTH:
1753                                 if (has_cap(ACER_CAP_WIRELESS))
1754                                         rfkill_set_sw_state(wireless_rfkill,
1755                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1756                                 if (has_cap(ACER_CAP_THREEG))
1757                                         rfkill_set_sw_state(threeg_rfkill,
1758                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1759                                 if (has_cap(ACER_CAP_BLUETOOTH))
1760                                         rfkill_set_sw_state(bluetooth_rfkill,
1761                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1762                                 break;
1763                         case KEY_TOUCHPAD_TOGGLE:
1764                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1765                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1766                         }
1767                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1768                 }
1769                 break;
1770         case WMID_ACCEL_EVENT:
1771                 acer_gsensor_event();
1772                 break;
1773         default:
1774                 pr_warn("Unknown function number - %d - %d\n",
1775                         return_value.function, return_value.key_num);
1776                 break;
1777         }
1778 }
1779 
1780 static acpi_status
1781 wmid3_set_lm_mode(struct lm_input_params *params,
1782                   struct lm_return_value *return_value)
1783 {
1784         acpi_status status;
1785         union acpi_object *obj;
1786 
1787         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1788         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1789 
1790         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1791         if (ACPI_FAILURE(status))
1792                 return status;
1793 
1794         obj = output.pointer;
1795 
1796         if (!obj)
1797                 return AE_ERROR;
1798         else if (obj->type != ACPI_TYPE_BUFFER) {
1799                 kfree(obj);
1800                 return AE_ERROR;
1801         }
1802         if (obj->buffer.length != 4) {
1803                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1804                 kfree(obj);
1805                 return AE_ERROR;
1806         }
1807 
1808         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1809         kfree(obj);
1810 
1811         return status;
1812 }
1813 
1814 static int acer_wmi_enable_ec_raw(void)
1815 {
1816         struct lm_return_value return_value;
1817         acpi_status status;
1818         struct lm_input_params params = {
1819                 .function_num = 0x1,
1820                 .commun_devices = 0xFFFF,
1821                 .devices = 0xFFFF,
1822                 .lm_status = 0x00,            /* Launch Manager Deactive */
1823         };
1824 
1825         status = wmid3_set_lm_mode(&params, &return_value);
1826 
1827         if (return_value.error_code || return_value.ec_return_value)
1828                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1829                         return_value.error_code,
1830                         return_value.ec_return_value);
1831         else
1832                 pr_info("Enabled EC raw mode\n");
1833 
1834         return status;
1835 }
1836 
1837 static int acer_wmi_enable_lm(void)
1838 {
1839         struct lm_return_value return_value;
1840         acpi_status status;
1841         struct lm_input_params params = {
1842                 .function_num = 0x1,
1843                 .commun_devices = 0xFFFF,
1844                 .devices = 0xFFFF,
1845                 .lm_status = 0x01,            /* Launch Manager Active */
1846         };
1847 
1848         status = wmid3_set_lm_mode(&params, &return_value);
1849 
1850         if (return_value.error_code || return_value.ec_return_value)
1851                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1852                         return_value.error_code,
1853                         return_value.ec_return_value);
1854 
1855         return status;
1856 }
1857 
1858 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1859                                                 void *ctx, void **retval)
1860 {
1861         *(acpi_handle *)retval = ah;
1862         return AE_OK;
1863 }
1864 
1865 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1866                                         acpi_handle *ah)
1867 {
1868         acpi_status status;
1869         acpi_handle handle;
1870 
1871         BUG_ON(!name || !ah);
1872 
1873         handle = NULL;
1874         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1875                                         (void *)name, &handle);
1876 
1877         if (ACPI_SUCCESS(status)) {
1878                 *ah = handle;
1879                 return 0;
1880         } else {
1881                 return -ENODEV;
1882         }
1883 }
1884 
1885 static int __init acer_wmi_accel_setup(void)
1886 {
1887         int err;
1888 
1889         err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1890         if (err)
1891                 return err;
1892 
1893         interface->capability |= ACER_CAP_ACCEL;
1894 
1895         acer_wmi_accel_dev = input_allocate_device();
1896         if (!acer_wmi_accel_dev)
1897                 return -ENOMEM;
1898 
1899         acer_wmi_accel_dev->open = acer_gsensor_open;
1900 
1901         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1902         acer_wmi_accel_dev->phys = "wmi/input1";
1903         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1904         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1905         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1906         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1907         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1908 
1909         err = input_register_device(acer_wmi_accel_dev);
1910         if (err)
1911                 goto err_free_dev;
1912 
1913         return 0;
1914 
1915 err_free_dev:
1916         input_free_device(acer_wmi_accel_dev);
1917         return err;
1918 }
1919 
1920 static void acer_wmi_accel_destroy(void)
1921 {
1922         input_unregister_device(acer_wmi_accel_dev);
1923 }
1924 
1925 static int __init acer_wmi_input_setup(void)
1926 {
1927         acpi_status status;
1928         int err;
1929 
1930         acer_wmi_input_dev = input_allocate_device();
1931         if (!acer_wmi_input_dev)
1932                 return -ENOMEM;
1933 
1934         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1935         acer_wmi_input_dev->phys = "wmi/input0";
1936         acer_wmi_input_dev->id.bustype = BUS_HOST;
1937 
1938         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1939         if (err)
1940                 goto err_free_dev;
1941 
1942         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1943                                                 acer_wmi_notify, NULL);
1944         if (ACPI_FAILURE(status)) {
1945                 err = -EIO;
1946                 goto err_free_keymap;
1947         }
1948 
1949         err = input_register_device(acer_wmi_input_dev);
1950         if (err)
1951                 goto err_uninstall_notifier;
1952 
1953         return 0;
1954 
1955 err_uninstall_notifier:
1956         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1957 err_free_keymap:
1958         sparse_keymap_free(acer_wmi_input_dev);
1959 err_free_dev:
1960         input_free_device(acer_wmi_input_dev);
1961         return err;
1962 }
1963 
1964 static void acer_wmi_input_destroy(void)
1965 {
1966         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1967         sparse_keymap_free(acer_wmi_input_dev);
1968         input_unregister_device(acer_wmi_input_dev);
1969 }
1970 
1971 /*
1972  * debugfs functions
1973  */
1974 static u32 get_wmid_devices(void)
1975 {
1976         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1977         union acpi_object *obj;
1978         acpi_status status;
1979         u32 devices = 0;
1980 
1981         status = wmi_query_block(WMID_GUID2, 1, &out);
1982         if (ACPI_FAILURE(status))
1983                 return 0;
1984 
1985         obj = (union acpi_object *) out.pointer;
1986         if (obj) {
1987                 if (obj->type == ACPI_TYPE_BUFFER &&
1988                         (obj->buffer.length == sizeof(u32) ||
1989                         obj->buffer.length == sizeof(u64))) {
1990                         devices = *((u32 *) obj->buffer.pointer);
1991                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1992                         devices = (u32) obj->integer.value;
1993                 }
1994         }
1995 
1996         kfree(out.pointer);
1997         return devices;
1998 }
1999 
2000 /*
2001  * Platform device
2002  */
2003 static int acer_platform_probe(struct platform_device *device)
2004 {
2005         int err;
2006 
2007         if (has_cap(ACER_CAP_MAILLED)) {
2008                 err = acer_led_init(&device->dev);
2009                 if (err)
2010                         goto error_mailled;
2011         }
2012 
2013         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2014                 err = acer_backlight_init(&device->dev);
2015                 if (err)
2016                         goto error_brightness;
2017         }
2018 
2019         err = acer_rfkill_init(&device->dev);
2020         if (err)
2021                 goto error_rfkill;
2022 
2023         return err;
2024 
2025 error_rfkill:
2026         if (has_cap(ACER_CAP_BRIGHTNESS))
2027                 acer_backlight_exit();
2028 error_brightness:
2029         if (has_cap(ACER_CAP_MAILLED))
2030                 acer_led_exit();
2031 error_mailled:
2032         return err;
2033 }
2034 
2035 static int acer_platform_remove(struct platform_device *device)
2036 {
2037         if (has_cap(ACER_CAP_MAILLED))
2038                 acer_led_exit();
2039         if (has_cap(ACER_CAP_BRIGHTNESS))
2040                 acer_backlight_exit();
2041 
2042         acer_rfkill_exit();
2043         return 0;
2044 }
2045 
2046 static int acer_suspend(struct device *dev)
2047 {
2048         u32 value;
2049         struct acer_data *data = &interface->data;
2050 
2051         if (!data)
2052                 return -ENOMEM;
2053 
2054         if (has_cap(ACER_CAP_MAILLED)) {
2055                 get_u32(&value, ACER_CAP_MAILLED);
2056                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2057                 data->mailled = value;
2058         }
2059 
2060         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2061                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2062                 data->brightness = value;
2063         }
2064 
2065         return 0;
2066 }
2067 
2068 static int acer_resume(struct device *dev)
2069 {
2070         struct acer_data *data = &interface->data;
2071 
2072         if (!data)
2073                 return -ENOMEM;
2074 
2075         if (has_cap(ACER_CAP_MAILLED))
2076                 set_u32(data->mailled, ACER_CAP_MAILLED);
2077 
2078         if (has_cap(ACER_CAP_BRIGHTNESS))
2079                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2080 
2081         if (has_cap(ACER_CAP_ACCEL))
2082                 acer_gsensor_init();
2083 
2084         return 0;
2085 }
2086 
2087 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2088 
2089 static void acer_platform_shutdown(struct platform_device *device)
2090 {
2091         struct acer_data *data = &interface->data;
2092 
2093         if (!data)
2094                 return;
2095 
2096         if (has_cap(ACER_CAP_MAILLED))
2097                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2098 }
2099 
2100 static struct platform_driver acer_platform_driver = {
2101         .driver = {
2102                 .name = "acer-wmi",
2103                 .owner = THIS_MODULE,
2104                 .pm = &acer_pm,
2105         },
2106         .probe = acer_platform_probe,
2107         .remove = acer_platform_remove,
2108         .shutdown = acer_platform_shutdown,
2109 };
2110 
2111 static struct platform_device *acer_platform_device;
2112 
2113 static int remove_sysfs(struct platform_device *device)
2114 {
2115         if (has_cap(ACER_CAP_THREEG))
2116                 device_remove_file(&device->dev, &dev_attr_threeg);
2117 
2118         device_remove_file(&device->dev, &dev_attr_interface);
2119 
2120         return 0;
2121 }
2122 
2123 static int create_sysfs(void)
2124 {
2125         int retval = -ENOMEM;
2126 
2127         if (has_cap(ACER_CAP_THREEG)) {
2128                 retval = device_create_file(&acer_platform_device->dev,
2129                         &dev_attr_threeg);
2130                 if (retval)
2131                         goto error_sysfs;
2132         }
2133 
2134         retval = device_create_file(&acer_platform_device->dev,
2135                 &dev_attr_interface);
2136         if (retval)
2137                 goto error_sysfs;
2138 
2139         return 0;
2140 
2141 error_sysfs:
2142                 remove_sysfs(acer_platform_device);
2143         return retval;
2144 }
2145 
2146 static void remove_debugfs(void)
2147 {
2148         debugfs_remove(interface->debug.devices);
2149         debugfs_remove(interface->debug.root);
2150 }
2151 
2152 static int create_debugfs(void)
2153 {
2154         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2155         if (!interface->debug.root) {
2156                 pr_err("Failed to create debugfs directory");
2157                 return -ENOMEM;
2158         }
2159 
2160         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2161                                         interface->debug.root,
2162                                         &interface->debug.wmid_devices);
2163         if (!interface->debug.devices)
2164                 goto error_debugfs;
2165 
2166         return 0;
2167 
2168 error_debugfs:
2169         remove_debugfs();
2170         return -ENOMEM;
2171 }
2172 
2173 static int __init acer_wmi_init(void)
2174 {
2175         int err;
2176 
2177         pr_info("Acer Laptop ACPI-WMI Extras\n");
2178 
2179         if (dmi_check_system(acer_blacklist)) {
2180                 pr_info("Blacklisted hardware detected - not loading\n");
2181                 return -ENODEV;
2182         }
2183 
2184         find_quirks();
2185 
2186         /*
2187          * Detect which ACPI-WMI interface we're using.
2188          */
2189         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2190                 interface = &AMW0_V2_interface;
2191 
2192         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2193                 interface = &wmid_interface;
2194 
2195         if (wmi_has_guid(WMID_GUID3))
2196                 interface = &wmid_v2_interface;
2197 
2198         if (interface)
2199                 dmi_walk(type_aa_dmi_decode, NULL);
2200 
2201         if (wmi_has_guid(WMID_GUID2) && interface) {
2202                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2203                         pr_err("Unable to detect available WMID devices\n");
2204                         return -ENODEV;
2205                 }
2206                 /* WMID always provides brightness methods */
2207                 interface->capability |= ACER_CAP_BRIGHTNESS;
2208         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2209                 pr_err("No WMID device detection method found\n");
2210                 return -ENODEV;
2211         }
2212 
2213         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2214                 interface = &AMW0_interface;
2215 
2216                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2217                         pr_err("Unable to detect available AMW0 devices\n");
2218                         return -ENODEV;
2219                 }
2220         }
2221 
2222         if (wmi_has_guid(AMW0_GUID1))
2223                 AMW0_find_mailled();
2224 
2225         if (!interface) {
2226                 pr_err("No or unsupported WMI interface, unable to load\n");
2227                 return -ENODEV;
2228         }
2229 
2230         set_quirks();
2231 
2232         if (dmi_check_system(video_vendor_dmi_table))
2233                 acpi_video_dmi_promote_vendor();
2234         if (acpi_video_backlight_support()) {
2235                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2236                 pr_info("Brightness must be controlled by acpi video driver\n");
2237         } else {
2238                 pr_info("Disabling ACPI video driver\n");
2239                 acpi_video_unregister_backlight();
2240         }
2241 
2242         if (wmi_has_guid(WMID_GUID3)) {
2243                 if (ec_raw_mode) {
2244                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2245                                 pr_err("Cannot enable EC raw mode\n");
2246                                 return -ENODEV;
2247                         }
2248                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2249                         pr_err("Cannot enable Launch Manager mode\n");
2250                         return -ENODEV;
2251                 }
2252         } else if (ec_raw_mode) {
2253                 pr_info("No WMID EC raw mode enable method\n");
2254         }
2255 
2256         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2257                 err = acer_wmi_input_setup();
2258                 if (err)
2259                         return err;
2260         }
2261 
2262         acer_wmi_accel_setup();
2263 
2264         err = platform_driver_register(&acer_platform_driver);
2265         if (err) {
2266                 pr_err("Unable to register platform driver\n");
2267                 goto error_platform_register;
2268         }
2269 
2270         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2271         if (!acer_platform_device) {
2272                 err = -ENOMEM;
2273                 goto error_device_alloc;
2274         }
2275 
2276         err = platform_device_add(acer_platform_device);
2277         if (err)
2278                 goto error_device_add;
2279 
2280         err = create_sysfs();
2281         if (err)
2282                 goto error_create_sys;
2283 
2284         if (wmi_has_guid(WMID_GUID2)) {
2285                 interface->debug.wmid_devices = get_wmid_devices();
2286                 err = create_debugfs();
2287                 if (err)
2288                         goto error_create_debugfs;
2289         }
2290 
2291         /* Override any initial settings with values from the commandline */
2292         acer_commandline_init();
2293 
2294         return 0;
2295 
2296 error_create_debugfs:
2297         remove_sysfs(acer_platform_device);
2298 error_create_sys:
2299         platform_device_del(acer_platform_device);
2300 error_device_add:
2301         platform_device_put(acer_platform_device);
2302 error_device_alloc:
2303         platform_driver_unregister(&acer_platform_driver);
2304 error_platform_register:
2305         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2306                 acer_wmi_input_destroy();
2307         if (has_cap(ACER_CAP_ACCEL))
2308                 acer_wmi_accel_destroy();
2309 
2310         return err;
2311 }
2312 
2313 static void __exit acer_wmi_exit(void)
2314 {
2315         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2316                 acer_wmi_input_destroy();
2317 
2318         if (has_cap(ACER_CAP_ACCEL))
2319                 acer_wmi_accel_destroy();
2320 
2321         remove_sysfs(acer_platform_device);
2322         remove_debugfs();
2323         platform_device_unregister(acer_platform_device);
2324         platform_driver_unregister(&acer_platform_driver);
2325 
2326         pr_info("Acer Laptop WMI Extras unloaded\n");
2327         return;
2328 }
2329 
2330 module_init(acer_wmi_init);
2331 module_exit(acer_wmi_exit);
2332 

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