Version:  2.0.40 2.2.26 2.4.37 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 3.17

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 acer_quirks[] __initconst = {
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 __init
534 video_set_backlight_video_vendor(const struct dmi_system_id *d)
535 {
536         interface->capability &= ~ACER_CAP_BRIGHTNESS;
537         pr_info("Brightness must be controlled by generic video driver\n");
538         return 0;
539 }
540 
541 static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
542         {
543                 .callback = video_set_backlight_video_vendor,
544                 .ident = "Acer TravelMate 4750",
545                 .matches = {
546                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
547                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
548                 },
549         },
550         {
551                 .callback = video_set_backlight_video_vendor,
552                 .ident = "Acer Extensa 5235",
553                 .matches = {
554                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
555                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
556                 },
557         },
558         {
559                 .callback = video_set_backlight_video_vendor,
560                 .ident = "Acer TravelMate 5760",
561                 .matches = {
562                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
563                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
564                 },
565         },
566         {
567                 .callback = video_set_backlight_video_vendor,
568                 .ident = "Acer Aspire 5750",
569                 .matches = {
570                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
571                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
572                 },
573         },
574         {
575                 .callback = video_set_backlight_video_vendor,
576                 .ident = "Acer Aspire 5741",
577                 .matches = {
578                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
579                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
580                 },
581         },
582         {}
583 };
584 
585 /* Find which quirks are needed for a particular vendor/ model pair */
586 static void __init find_quirks(void)
587 {
588         if (!force_series) {
589                 dmi_check_system(acer_quirks);
590         } else if (force_series == 2490) {
591                 quirks = &quirk_acer_travelmate_2490;
592         }
593 
594         if (quirks == NULL)
595                 quirks = &quirk_unknown;
596 
597         set_quirks();
598 }
599 
600 /*
601  * General interface convenience methods
602  */
603 
604 static bool has_cap(u32 cap)
605 {
606         if ((interface->capability & cap) != 0)
607                 return 1;
608 
609         return 0;
610 }
611 
612 /*
613  * AMW0 (V1) interface
614  */
615 struct wmab_args {
616         u32 eax;
617         u32 ebx;
618         u32 ecx;
619         u32 edx;
620 };
621 
622 struct wmab_ret {
623         u32 eax;
624         u32 ebx;
625         u32 ecx;
626         u32 edx;
627         u32 eex;
628 };
629 
630 static acpi_status wmab_execute(struct wmab_args *regbuf,
631 struct acpi_buffer *result)
632 {
633         struct acpi_buffer input;
634         acpi_status status;
635         input.length = sizeof(struct wmab_args);
636         input.pointer = (u8 *)regbuf;
637 
638         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
639 
640         return status;
641 }
642 
643 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
644 {
645         int err;
646         u8 result;
647 
648         switch (cap) {
649         case ACER_CAP_MAILLED:
650                 switch (quirks->mailled) {
651                 default:
652                         err = ec_read(0xA, &result);
653                         if (err)
654                                 return AE_ERROR;
655                         *value = (result >> 7) & 0x1;
656                         return AE_OK;
657                 }
658                 break;
659         case ACER_CAP_WIRELESS:
660                 switch (quirks->wireless) {
661                 case 1:
662                         err = ec_read(0x7B, &result);
663                         if (err)
664                                 return AE_ERROR;
665                         *value = result & 0x1;
666                         return AE_OK;
667                 case 2:
668                         err = ec_read(0x71, &result);
669                         if (err)
670                                 return AE_ERROR;
671                         *value = result & 0x1;
672                         return AE_OK;
673                 case 3:
674                         err = ec_read(0x78, &result);
675                         if (err)
676                                 return AE_ERROR;
677                         *value = result & 0x1;
678                         return AE_OK;
679                 default:
680                         err = ec_read(0xA, &result);
681                         if (err)
682                                 return AE_ERROR;
683                         *value = (result >> 2) & 0x1;
684                         return AE_OK;
685                 }
686                 break;
687         case ACER_CAP_BLUETOOTH:
688                 switch (quirks->bluetooth) {
689                 default:
690                         err = ec_read(0xA, &result);
691                         if (err)
692                                 return AE_ERROR;
693                         *value = (result >> 4) & 0x1;
694                         return AE_OK;
695                 }
696                 break;
697         case ACER_CAP_BRIGHTNESS:
698                 switch (quirks->brightness) {
699                 default:
700                         err = ec_read(0x83, &result);
701                         if (err)
702                                 return AE_ERROR;
703                         *value = result;
704                         return AE_OK;
705                 }
706                 break;
707         default:
708                 return AE_ERROR;
709         }
710         return AE_OK;
711 }
712 
713 static acpi_status AMW0_set_u32(u32 value, u32 cap)
714 {
715         struct wmab_args args;
716 
717         args.eax = ACER_AMW0_WRITE;
718         args.ebx = value ? (1<<8) : 0;
719         args.ecx = args.edx = 0;
720 
721         switch (cap) {
722         case ACER_CAP_MAILLED:
723                 if (value > 1)
724                         return AE_BAD_PARAMETER;
725                 args.ebx |= ACER_AMW0_MAILLED_MASK;
726                 break;
727         case ACER_CAP_WIRELESS:
728                 if (value > 1)
729                         return AE_BAD_PARAMETER;
730                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
731                 break;
732         case ACER_CAP_BLUETOOTH:
733                 if (value > 1)
734                         return AE_BAD_PARAMETER;
735                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
736                 break;
737         case ACER_CAP_BRIGHTNESS:
738                 if (value > max_brightness)
739                         return AE_BAD_PARAMETER;
740                 switch (quirks->brightness) {
741                 default:
742                         return ec_write(0x83, value);
743                         break;
744                 }
745         default:
746                 return AE_ERROR;
747         }
748 
749         /* Actually do the set */
750         return wmab_execute(&args, NULL);
751 }
752 
753 static acpi_status __init AMW0_find_mailled(void)
754 {
755         struct wmab_args args;
756         struct wmab_ret ret;
757         acpi_status status = AE_OK;
758         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
759         union acpi_object *obj;
760 
761         args.eax = 0x86;
762         args.ebx = args.ecx = args.edx = 0;
763 
764         status = wmab_execute(&args, &out);
765         if (ACPI_FAILURE(status))
766                 return status;
767 
768         obj = (union acpi_object *) out.pointer;
769         if (obj && obj->type == ACPI_TYPE_BUFFER &&
770         obj->buffer.length == sizeof(struct wmab_ret)) {
771                 ret = *((struct wmab_ret *) obj->buffer.pointer);
772         } else {
773                 kfree(out.pointer);
774                 return AE_ERROR;
775         }
776 
777         if (ret.eex & 0x1)
778                 interface->capability |= ACER_CAP_MAILLED;
779 
780         kfree(out.pointer);
781 
782         return AE_OK;
783 }
784 
785 static int AMW0_set_cap_acpi_check_device_found __initdata;
786 
787 static acpi_status __init AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
788         u32 level, void *context, void **retval)
789 {
790         AMW0_set_cap_acpi_check_device_found = 1;
791         return AE_OK;
792 }
793 
794 static const struct acpi_device_id norfkill_ids[] __initconst = {
795         { "VPC2004", 0},
796         { "IBM0068", 0},
797         { "LEN0068", 0},
798         { "SNY5001", 0},        /* sony-laptop in charge */
799         { "", 0},
800 };
801 
802 static int __init AMW0_set_cap_acpi_check_device(void)
803 {
804         const struct acpi_device_id *id;
805 
806         for (id = norfkill_ids; id->id[0]; id++)
807                 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
808                                 NULL, NULL);
809         return AMW0_set_cap_acpi_check_device_found;
810 }
811 
812 static acpi_status __init AMW0_set_capabilities(void)
813 {
814         struct wmab_args args;
815         struct wmab_ret ret;
816         acpi_status status;
817         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
818         union acpi_object *obj;
819 
820         /*
821          * On laptops with this strange GUID (non Acer), normal probing doesn't
822          * work.
823          */
824         if (wmi_has_guid(AMW0_GUID2)) {
825                 if ((quirks != &quirk_unknown) ||
826                     !AMW0_set_cap_acpi_check_device())
827                         interface->capability |= ACER_CAP_WIRELESS;
828                 return AE_OK;
829         }
830 
831         args.eax = ACER_AMW0_WRITE;
832         args.ecx = args.edx = 0;
833 
834         args.ebx = 0xa2 << 8;
835         args.ebx |= ACER_AMW0_WIRELESS_MASK;
836 
837         status = wmab_execute(&args, &out);
838         if (ACPI_FAILURE(status))
839                 return status;
840 
841         obj = out.pointer;
842         if (obj && obj->type == ACPI_TYPE_BUFFER &&
843         obj->buffer.length == sizeof(struct wmab_ret)) {
844                 ret = *((struct wmab_ret *) obj->buffer.pointer);
845         } else {
846                 status = AE_ERROR;
847                 goto out;
848         }
849 
850         if (ret.eax & 0x1)
851                 interface->capability |= ACER_CAP_WIRELESS;
852 
853         args.ebx = 2 << 8;
854         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
855 
856         /*
857          * It's ok to use existing buffer for next wmab_execute call.
858          * But we need to kfree(out.pointer) if next wmab_execute fail.
859          */
860         status = wmab_execute(&args, &out);
861         if (ACPI_FAILURE(status))
862                 goto out;
863 
864         obj = (union acpi_object *) out.pointer;
865         if (obj && obj->type == ACPI_TYPE_BUFFER
866         && obj->buffer.length == sizeof(struct wmab_ret)) {
867                 ret = *((struct wmab_ret *) obj->buffer.pointer);
868         } else {
869                 status = AE_ERROR;
870                 goto out;
871         }
872 
873         if (ret.eax & 0x1)
874                 interface->capability |= ACER_CAP_BLUETOOTH;
875 
876         /*
877          * This appears to be safe to enable, since all Wistron based laptops
878          * appear to use the same EC register for brightness, even if they
879          * differ for wireless, etc
880          */
881         if (quirks->brightness >= 0)
882                 interface->capability |= ACER_CAP_BRIGHTNESS;
883 
884         status = AE_OK;
885 out:
886         kfree(out.pointer);
887         return status;
888 }
889 
890 static struct wmi_interface AMW0_interface = {
891         .type = ACER_AMW0,
892 };
893 
894 static struct wmi_interface AMW0_V2_interface = {
895         .type = ACER_AMW0_V2,
896 };
897 
898 /*
899  * New interface (The WMID interface)
900  */
901 static acpi_status
902 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
903 {
904         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
905         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
906         union acpi_object *obj;
907         u32 tmp = 0;
908         acpi_status status;
909 
910         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
911 
912         if (ACPI_FAILURE(status))
913                 return status;
914 
915         obj = (union acpi_object *) result.pointer;
916         if (obj) {
917                 if (obj->type == ACPI_TYPE_BUFFER &&
918                         (obj->buffer.length == sizeof(u32) ||
919                         obj->buffer.length == sizeof(u64))) {
920                         tmp = *((u32 *) obj->buffer.pointer);
921                 } else if (obj->type == ACPI_TYPE_INTEGER) {
922                         tmp = (u32) obj->integer.value;
923                 }
924         }
925 
926         if (out)
927                 *out = tmp;
928 
929         kfree(result.pointer);
930 
931         return status;
932 }
933 
934 static acpi_status WMID_get_u32(u32 *value, u32 cap)
935 {
936         acpi_status status;
937         u8 tmp;
938         u32 result, method_id = 0;
939 
940         switch (cap) {
941         case ACER_CAP_WIRELESS:
942                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
943                 break;
944         case ACER_CAP_BLUETOOTH:
945                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
946                 break;
947         case ACER_CAP_BRIGHTNESS:
948                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
949                 break;
950         case ACER_CAP_THREEG:
951                 method_id = ACER_WMID_GET_THREEG_METHODID;
952                 break;
953         case ACER_CAP_MAILLED:
954                 if (quirks->mailled == 1) {
955                         ec_read(0x9f, &tmp);
956                         *value = tmp & 0x1;
957                         return 0;
958                 }
959         default:
960                 return AE_ERROR;
961         }
962         status = WMI_execute_u32(method_id, 0, &result);
963 
964         if (ACPI_SUCCESS(status))
965                 *value = (u8)result;
966 
967         return status;
968 }
969 
970 static acpi_status WMID_set_u32(u32 value, u32 cap)
971 {
972         u32 method_id = 0;
973         char param;
974 
975         switch (cap) {
976         case ACER_CAP_BRIGHTNESS:
977                 if (value > max_brightness)
978                         return AE_BAD_PARAMETER;
979                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
980                 break;
981         case ACER_CAP_WIRELESS:
982                 if (value > 1)
983                         return AE_BAD_PARAMETER;
984                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
985                 break;
986         case ACER_CAP_BLUETOOTH:
987                 if (value > 1)
988                         return AE_BAD_PARAMETER;
989                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
990                 break;
991         case ACER_CAP_THREEG:
992                 if (value > 1)
993                         return AE_BAD_PARAMETER;
994                 method_id = ACER_WMID_SET_THREEG_METHODID;
995                 break;
996         case ACER_CAP_MAILLED:
997                 if (value > 1)
998                         return AE_BAD_PARAMETER;
999                 if (quirks->mailled == 1) {
1000                         param = value ? 0x92 : 0x93;
1001                         i8042_lock_chip();
1002                         i8042_command(&param, 0x1059);
1003                         i8042_unlock_chip();
1004                         return 0;
1005                 }
1006                 break;
1007         default:
1008                 return AE_ERROR;
1009         }
1010         return WMI_execute_u32(method_id, (u32)value, NULL);
1011 }
1012 
1013 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1014 {
1015         struct wmid3_gds_return_value return_value;
1016         acpi_status status;
1017         union acpi_object *obj;
1018         struct wmid3_gds_get_input_param params = {
1019                 .function_num = 0x1,
1020                 .hotkey_number = commun_fn_key_number,
1021                 .devices = device,
1022         };
1023         struct acpi_buffer input = {
1024                 sizeof(struct wmid3_gds_get_input_param),
1025                 &params
1026         };
1027         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1028 
1029         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1030         if (ACPI_FAILURE(status))
1031                 return status;
1032 
1033         obj = output.pointer;
1034 
1035         if (!obj)
1036                 return AE_ERROR;
1037         else if (obj->type != ACPI_TYPE_BUFFER) {
1038                 kfree(obj);
1039                 return AE_ERROR;
1040         }
1041         if (obj->buffer.length != 8) {
1042                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1043                 kfree(obj);
1044                 return AE_ERROR;
1045         }
1046 
1047         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1048         kfree(obj);
1049 
1050         if (return_value.error_code || return_value.ec_return_value)
1051                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1052                         device,
1053                         return_value.error_code,
1054                         return_value.ec_return_value);
1055         else
1056                 *value = !!(return_value.devices & device);
1057 
1058         return status;
1059 }
1060 
1061 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1062 {
1063         u16 device;
1064 
1065         switch (cap) {
1066         case ACER_CAP_WIRELESS:
1067                 device = ACER_WMID3_GDS_WIRELESS;
1068                 break;
1069         case ACER_CAP_BLUETOOTH:
1070                 device = ACER_WMID3_GDS_BLUETOOTH;
1071                 break;
1072         case ACER_CAP_THREEG:
1073                 device = ACER_WMID3_GDS_THREEG;
1074                 break;
1075         default:
1076                 return AE_ERROR;
1077         }
1078         return wmid3_get_device_status(value, device);
1079 }
1080 
1081 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1082 {
1083         struct wmid3_gds_return_value return_value;
1084         acpi_status status;
1085         union acpi_object *obj;
1086         u16 devices;
1087         struct wmid3_gds_get_input_param get_params = {
1088                 .function_num = 0x1,
1089                 .hotkey_number = commun_fn_key_number,
1090                 .devices = commun_func_bitmap,
1091         };
1092         struct acpi_buffer get_input = {
1093                 sizeof(struct wmid3_gds_get_input_param),
1094                 &get_params
1095         };
1096         struct wmid3_gds_set_input_param set_params = {
1097                 .function_num = 0x2,
1098                 .hotkey_number = commun_fn_key_number,
1099                 .devices = commun_func_bitmap,
1100         };
1101         struct acpi_buffer set_input = {
1102                 sizeof(struct wmid3_gds_set_input_param),
1103                 &set_params
1104         };
1105         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1106         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1107 
1108         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1109         if (ACPI_FAILURE(status))
1110                 return status;
1111 
1112         obj = output.pointer;
1113 
1114         if (!obj)
1115                 return AE_ERROR;
1116         else if (obj->type != ACPI_TYPE_BUFFER) {
1117                 kfree(obj);
1118                 return AE_ERROR;
1119         }
1120         if (obj->buffer.length != 8) {
1121                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1122                 kfree(obj);
1123                 return AE_ERROR;
1124         }
1125 
1126         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1127         kfree(obj);
1128 
1129         if (return_value.error_code || return_value.ec_return_value) {
1130                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1131                         return_value.error_code,
1132                         return_value.ec_return_value);
1133                 return status;
1134         }
1135 
1136         devices = return_value.devices;
1137         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1138 
1139         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1140         if (ACPI_FAILURE(status))
1141                 return status;
1142 
1143         obj = output2.pointer;
1144 
1145         if (!obj)
1146                 return AE_ERROR;
1147         else if (obj->type != ACPI_TYPE_BUFFER) {
1148                 kfree(obj);
1149                 return AE_ERROR;
1150         }
1151         if (obj->buffer.length != 4) {
1152                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1153                 kfree(obj);
1154                 return AE_ERROR;
1155         }
1156 
1157         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1158         kfree(obj);
1159 
1160         if (return_value.error_code || return_value.ec_return_value)
1161                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1162                         return_value.error_code,
1163                         return_value.ec_return_value);
1164 
1165         return status;
1166 }
1167 
1168 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1169 {
1170         u16 device;
1171 
1172         switch (cap) {
1173         case ACER_CAP_WIRELESS:
1174                 device = ACER_WMID3_GDS_WIRELESS;
1175                 break;
1176         case ACER_CAP_BLUETOOTH:
1177                 device = ACER_WMID3_GDS_BLUETOOTH;
1178                 break;
1179         case ACER_CAP_THREEG:
1180                 device = ACER_WMID3_GDS_THREEG;
1181                 break;
1182         default:
1183                 return AE_ERROR;
1184         }
1185         return wmid3_set_device_status(value, device);
1186 }
1187 
1188 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1189 {
1190         struct hotkey_function_type_aa *type_aa;
1191 
1192         /* We are looking for OEM-specific Type AAh */
1193         if (header->type != 0xAA)
1194                 return;
1195 
1196         has_type_aa = true;
1197         type_aa = (struct hotkey_function_type_aa *) header;
1198 
1199         pr_info("Function bitmap for Communication Button: 0x%x\n",
1200                 type_aa->commun_func_bitmap);
1201         commun_func_bitmap = type_aa->commun_func_bitmap;
1202 
1203         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1204                 interface->capability |= ACER_CAP_WIRELESS;
1205         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1206                 interface->capability |= ACER_CAP_THREEG;
1207         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1208                 interface->capability |= ACER_CAP_BLUETOOTH;
1209 
1210         commun_fn_key_number = type_aa->commun_fn_key_number;
1211 }
1212 
1213 static acpi_status __init WMID_set_capabilities(void)
1214 {
1215         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1216         union acpi_object *obj;
1217         acpi_status status;
1218         u32 devices;
1219 
1220         status = wmi_query_block(WMID_GUID2, 1, &out);
1221         if (ACPI_FAILURE(status))
1222                 return status;
1223 
1224         obj = (union acpi_object *) out.pointer;
1225         if (obj) {
1226                 if (obj->type == ACPI_TYPE_BUFFER &&
1227                         (obj->buffer.length == sizeof(u32) ||
1228                         obj->buffer.length == sizeof(u64))) {
1229                         devices = *((u32 *) obj->buffer.pointer);
1230                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1231                         devices = (u32) obj->integer.value;
1232                 } else {
1233                         kfree(out.pointer);
1234                         return AE_ERROR;
1235                 }
1236         } else {
1237                 kfree(out.pointer);
1238                 return AE_ERROR;
1239         }
1240 
1241         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1242         if (devices & 0x07)
1243                 interface->capability |= ACER_CAP_WIRELESS;
1244         if (devices & 0x40)
1245                 interface->capability |= ACER_CAP_THREEG;
1246         if (devices & 0x10)
1247                 interface->capability |= ACER_CAP_BLUETOOTH;
1248 
1249         if (!(devices & 0x20))
1250                 max_brightness = 0x9;
1251 
1252         kfree(out.pointer);
1253         return status;
1254 }
1255 
1256 static struct wmi_interface wmid_interface = {
1257         .type = ACER_WMID,
1258 };
1259 
1260 static struct wmi_interface wmid_v2_interface = {
1261         .type = ACER_WMID_v2,
1262 };
1263 
1264 /*
1265  * Generic Device (interface-independent)
1266  */
1267 
1268 static acpi_status get_u32(u32 *value, u32 cap)
1269 {
1270         acpi_status status = AE_ERROR;
1271 
1272         switch (interface->type) {
1273         case ACER_AMW0:
1274                 status = AMW0_get_u32(value, cap);
1275                 break;
1276         case ACER_AMW0_V2:
1277                 if (cap == ACER_CAP_MAILLED) {
1278                         status = AMW0_get_u32(value, cap);
1279                         break;
1280                 }
1281         case ACER_WMID:
1282                 status = WMID_get_u32(value, cap);
1283                 break;
1284         case ACER_WMID_v2:
1285                 if (cap & (ACER_CAP_WIRELESS |
1286                            ACER_CAP_BLUETOOTH |
1287                            ACER_CAP_THREEG))
1288                         status = wmid_v2_get_u32(value, cap);
1289                 else if (wmi_has_guid(WMID_GUID2))
1290                         status = WMID_get_u32(value, cap);
1291                 break;
1292         }
1293 
1294         return status;
1295 }
1296 
1297 static acpi_status set_u32(u32 value, u32 cap)
1298 {
1299         acpi_status status;
1300 
1301         if (interface->capability & cap) {
1302                 switch (interface->type) {
1303                 case ACER_AMW0:
1304                         return AMW0_set_u32(value, cap);
1305                 case ACER_AMW0_V2:
1306                         if (cap == ACER_CAP_MAILLED)
1307                                 return AMW0_set_u32(value, cap);
1308 
1309                         /*
1310                          * On some models, some WMID methods don't toggle
1311                          * properly. For those cases, we want to run the AMW0
1312                          * method afterwards to be certain we've really toggled
1313                          * the device state.
1314                          */
1315                         if (cap == ACER_CAP_WIRELESS ||
1316                                 cap == ACER_CAP_BLUETOOTH) {
1317                                 status = WMID_set_u32(value, cap);
1318                                 if (ACPI_FAILURE(status))
1319                                         return status;
1320 
1321                                 return AMW0_set_u32(value, cap);
1322                         }
1323                 case ACER_WMID:
1324                         return WMID_set_u32(value, cap);
1325                 case ACER_WMID_v2:
1326                         if (cap & (ACER_CAP_WIRELESS |
1327                                    ACER_CAP_BLUETOOTH |
1328                                    ACER_CAP_THREEG))
1329                                 return wmid_v2_set_u32(value, cap);
1330                         else if (wmi_has_guid(WMID_GUID2))
1331                                 return WMID_set_u32(value, cap);
1332                 default:
1333                         return AE_BAD_PARAMETER;
1334                 }
1335         }
1336         return AE_BAD_PARAMETER;
1337 }
1338 
1339 static void __init acer_commandline_init(void)
1340 {
1341         /*
1342          * These will all fail silently if the value given is invalid, or the
1343          * capability isn't available on the given interface
1344          */
1345         if (mailled >= 0)
1346                 set_u32(mailled, ACER_CAP_MAILLED);
1347         if (!has_type_aa && threeg >= 0)
1348                 set_u32(threeg, ACER_CAP_THREEG);
1349         if (brightness >= 0)
1350                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1351 }
1352 
1353 /*
1354  * LED device (Mail LED only, no other LEDs known yet)
1355  */
1356 static void mail_led_set(struct led_classdev *led_cdev,
1357 enum led_brightness value)
1358 {
1359         set_u32(value, ACER_CAP_MAILLED);
1360 }
1361 
1362 static struct led_classdev mail_led = {
1363         .name = "acer-wmi::mail",
1364         .brightness_set = mail_led_set,
1365 };
1366 
1367 static int acer_led_init(struct device *dev)
1368 {
1369         return led_classdev_register(dev, &mail_led);
1370 }
1371 
1372 static void acer_led_exit(void)
1373 {
1374         set_u32(LED_OFF, ACER_CAP_MAILLED);
1375         led_classdev_unregister(&mail_led);
1376 }
1377 
1378 /*
1379  * Backlight device
1380  */
1381 static struct backlight_device *acer_backlight_device;
1382 
1383 static int read_brightness(struct backlight_device *bd)
1384 {
1385         u32 value;
1386         get_u32(&value, ACER_CAP_BRIGHTNESS);
1387         return value;
1388 }
1389 
1390 static int update_bl_status(struct backlight_device *bd)
1391 {
1392         int intensity = bd->props.brightness;
1393 
1394         if (bd->props.power != FB_BLANK_UNBLANK)
1395                 intensity = 0;
1396         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1397                 intensity = 0;
1398 
1399         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1400 
1401         return 0;
1402 }
1403 
1404 static const struct backlight_ops acer_bl_ops = {
1405         .get_brightness = read_brightness,
1406         .update_status = update_bl_status,
1407 };
1408 
1409 static int acer_backlight_init(struct device *dev)
1410 {
1411         struct backlight_properties props;
1412         struct backlight_device *bd;
1413 
1414         memset(&props, 0, sizeof(struct backlight_properties));
1415         props.type = BACKLIGHT_PLATFORM;
1416         props.max_brightness = max_brightness;
1417         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1418                                        &props);
1419         if (IS_ERR(bd)) {
1420                 pr_err("Could not register Acer backlight device\n");
1421                 acer_backlight_device = NULL;
1422                 return PTR_ERR(bd);
1423         }
1424 
1425         acer_backlight_device = bd;
1426 
1427         bd->props.power = FB_BLANK_UNBLANK;
1428         bd->props.brightness = read_brightness(bd);
1429         backlight_update_status(bd);
1430         return 0;
1431 }
1432 
1433 static void acer_backlight_exit(void)
1434 {
1435         backlight_device_unregister(acer_backlight_device);
1436 }
1437 
1438 /*
1439  * Accelerometer device
1440  */
1441 static acpi_handle gsensor_handle;
1442 
1443 static int acer_gsensor_init(void)
1444 {
1445         acpi_status status;
1446         struct acpi_buffer output;
1447         union acpi_object out_obj;
1448 
1449         output.length = sizeof(out_obj);
1450         output.pointer = &out_obj;
1451         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1452         if (ACPI_FAILURE(status))
1453                 return -1;
1454 
1455         return 0;
1456 }
1457 
1458 static int acer_gsensor_open(struct input_dev *input)
1459 {
1460         return acer_gsensor_init();
1461 }
1462 
1463 static int acer_gsensor_event(void)
1464 {
1465         acpi_status status;
1466         struct acpi_buffer output;
1467         union acpi_object out_obj[5];
1468 
1469         if (!has_cap(ACER_CAP_ACCEL))
1470                 return -1;
1471 
1472         output.length = sizeof(out_obj);
1473         output.pointer = out_obj;
1474 
1475         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1476         if (ACPI_FAILURE(status))
1477                 return -1;
1478 
1479         if (out_obj->package.count != 4)
1480                 return -1;
1481 
1482         input_report_abs(acer_wmi_accel_dev, ABS_X,
1483                 (s16)out_obj->package.elements[0].integer.value);
1484         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1485                 (s16)out_obj->package.elements[1].integer.value);
1486         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1487                 (s16)out_obj->package.elements[2].integer.value);
1488         input_sync(acer_wmi_accel_dev);
1489         return 0;
1490 }
1491 
1492 /*
1493  * Rfkill devices
1494  */
1495 static void acer_rfkill_update(struct work_struct *ignored);
1496 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1497 static void acer_rfkill_update(struct work_struct *ignored)
1498 {
1499         u32 state;
1500         acpi_status status;
1501 
1502         if (has_cap(ACER_CAP_WIRELESS)) {
1503                 status = get_u32(&state, ACER_CAP_WIRELESS);
1504                 if (ACPI_SUCCESS(status)) {
1505                         if (quirks->wireless == 3)
1506                                 rfkill_set_hw_state(wireless_rfkill, !state);
1507                         else
1508                                 rfkill_set_sw_state(wireless_rfkill, !state);
1509                 }
1510         }
1511 
1512         if (has_cap(ACER_CAP_BLUETOOTH)) {
1513                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1514                 if (ACPI_SUCCESS(status))
1515                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1516         }
1517 
1518         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1519                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1520                 if (ACPI_SUCCESS(status))
1521                         rfkill_set_sw_state(threeg_rfkill, !state);
1522         }
1523 
1524         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1525 }
1526 
1527 static int acer_rfkill_set(void *data, bool blocked)
1528 {
1529         acpi_status status;
1530         u32 cap = (unsigned long)data;
1531 
1532         if (rfkill_inited) {
1533                 status = set_u32(!blocked, cap);
1534                 if (ACPI_FAILURE(status))
1535                         return -ENODEV;
1536         }
1537 
1538         return 0;
1539 }
1540 
1541 static const struct rfkill_ops acer_rfkill_ops = {
1542         .set_block = acer_rfkill_set,
1543 };
1544 
1545 static struct rfkill *acer_rfkill_register(struct device *dev,
1546                                            enum rfkill_type type,
1547                                            char *name, u32 cap)
1548 {
1549         int err;
1550         struct rfkill *rfkill_dev;
1551         u32 state;
1552         acpi_status status;
1553 
1554         rfkill_dev = rfkill_alloc(name, dev, type,
1555                                   &acer_rfkill_ops,
1556                                   (void *)(unsigned long)cap);
1557         if (!rfkill_dev)
1558                 return ERR_PTR(-ENOMEM);
1559 
1560         status = get_u32(&state, cap);
1561 
1562         err = rfkill_register(rfkill_dev);
1563         if (err) {
1564                 rfkill_destroy(rfkill_dev);
1565                 return ERR_PTR(err);
1566         }
1567 
1568         if (ACPI_SUCCESS(status))
1569                 rfkill_set_sw_state(rfkill_dev, !state);
1570 
1571         return rfkill_dev;
1572 }
1573 
1574 static int acer_rfkill_init(struct device *dev)
1575 {
1576         int err;
1577 
1578         if (has_cap(ACER_CAP_WIRELESS)) {
1579                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1580                         "acer-wireless", ACER_CAP_WIRELESS);
1581                 if (IS_ERR(wireless_rfkill)) {
1582                         err = PTR_ERR(wireless_rfkill);
1583                         goto error_wireless;
1584                 }
1585         }
1586 
1587         if (has_cap(ACER_CAP_BLUETOOTH)) {
1588                 bluetooth_rfkill = acer_rfkill_register(dev,
1589                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1590                         ACER_CAP_BLUETOOTH);
1591                 if (IS_ERR(bluetooth_rfkill)) {
1592                         err = PTR_ERR(bluetooth_rfkill);
1593                         goto error_bluetooth;
1594                 }
1595         }
1596 
1597         if (has_cap(ACER_CAP_THREEG)) {
1598                 threeg_rfkill = acer_rfkill_register(dev,
1599                         RFKILL_TYPE_WWAN, "acer-threeg",
1600                         ACER_CAP_THREEG);
1601                 if (IS_ERR(threeg_rfkill)) {
1602                         err = PTR_ERR(threeg_rfkill);
1603                         goto error_threeg;
1604                 }
1605         }
1606 
1607         rfkill_inited = true;
1608 
1609         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1610             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1611                 schedule_delayed_work(&acer_rfkill_work,
1612                         round_jiffies_relative(HZ));
1613 
1614         return 0;
1615 
1616 error_threeg:
1617         if (has_cap(ACER_CAP_BLUETOOTH)) {
1618                 rfkill_unregister(bluetooth_rfkill);
1619                 rfkill_destroy(bluetooth_rfkill);
1620         }
1621 error_bluetooth:
1622         if (has_cap(ACER_CAP_WIRELESS)) {
1623                 rfkill_unregister(wireless_rfkill);
1624                 rfkill_destroy(wireless_rfkill);
1625         }
1626 error_wireless:
1627         return err;
1628 }
1629 
1630 static void acer_rfkill_exit(void)
1631 {
1632         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1633             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1634                 cancel_delayed_work_sync(&acer_rfkill_work);
1635 
1636         if (has_cap(ACER_CAP_WIRELESS)) {
1637                 rfkill_unregister(wireless_rfkill);
1638                 rfkill_destroy(wireless_rfkill);
1639         }
1640 
1641         if (has_cap(ACER_CAP_BLUETOOTH)) {
1642                 rfkill_unregister(bluetooth_rfkill);
1643                 rfkill_destroy(bluetooth_rfkill);
1644         }
1645 
1646         if (has_cap(ACER_CAP_THREEG)) {
1647                 rfkill_unregister(threeg_rfkill);
1648                 rfkill_destroy(threeg_rfkill);
1649         }
1650         return;
1651 }
1652 
1653 /*
1654  * sysfs interface
1655  */
1656 static ssize_t show_bool_threeg(struct device *dev,
1657         struct device_attribute *attr, char *buf)
1658 {
1659         u32 result; \
1660         acpi_status status;
1661 
1662         pr_info("This threeg sysfs will be removed in 2014 - used by: %s\n",
1663                 current->comm);
1664         status = get_u32(&result, ACER_CAP_THREEG);
1665         if (ACPI_SUCCESS(status))
1666                 return sprintf(buf, "%u\n", result);
1667         return sprintf(buf, "Read error\n");
1668 }
1669 
1670 static ssize_t set_bool_threeg(struct device *dev,
1671         struct device_attribute *attr, const char *buf, size_t count)
1672 {
1673         u32 tmp = simple_strtoul(buf, NULL, 10);
1674         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1675         pr_info("This threeg sysfs will be removed in 2014 - used by: %s\n",
1676                 current->comm);
1677         if (ACPI_FAILURE(status))
1678                 return -EINVAL;
1679         return count;
1680 }
1681 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1682         set_bool_threeg);
1683 
1684 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1685         char *buf)
1686 {
1687         pr_info("This interface sysfs will be removed in 2014 - used by: %s\n",
1688                 current->comm);
1689         switch (interface->type) {
1690         case ACER_AMW0:
1691                 return sprintf(buf, "AMW0\n");
1692         case ACER_AMW0_V2:
1693                 return sprintf(buf, "AMW0 v2\n");
1694         case ACER_WMID:
1695                 return sprintf(buf, "WMID\n");
1696         case ACER_WMID_v2:
1697                 return sprintf(buf, "WMID v2\n");
1698         default:
1699                 return sprintf(buf, "Error!\n");
1700         }
1701 }
1702 
1703 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1704 
1705 static void acer_wmi_notify(u32 value, void *context)
1706 {
1707         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1708         union acpi_object *obj;
1709         struct event_return_value return_value;
1710         acpi_status status;
1711         u16 device_state;
1712         const struct key_entry *key;
1713         u32 scancode;
1714 
1715         status = wmi_get_event_data(value, &response);
1716         if (status != AE_OK) {
1717                 pr_warn("bad event status 0x%x\n", status);
1718                 return;
1719         }
1720 
1721         obj = (union acpi_object *)response.pointer;
1722 
1723         if (!obj)
1724                 return;
1725         if (obj->type != ACPI_TYPE_BUFFER) {
1726                 pr_warn("Unknown response received %d\n", obj->type);
1727                 kfree(obj);
1728                 return;
1729         }
1730         if (obj->buffer.length != 8) {
1731                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1732                 kfree(obj);
1733                 return;
1734         }
1735 
1736         return_value = *((struct event_return_value *)obj->buffer.pointer);
1737         kfree(obj);
1738 
1739         switch (return_value.function) {
1740         case WMID_HOTKEY_EVENT:
1741                 device_state = return_value.device_state;
1742                 pr_debug("device state: 0x%x\n", device_state);
1743 
1744                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1745                                                         return_value.key_num);
1746                 if (!key) {
1747                         pr_warn("Unknown key number - 0x%x\n",
1748                                 return_value.key_num);
1749                 } else {
1750                         scancode = return_value.key_num;
1751                         switch (key->keycode) {
1752                         case KEY_WLAN:
1753                         case KEY_BLUETOOTH:
1754                                 if (has_cap(ACER_CAP_WIRELESS))
1755                                         rfkill_set_sw_state(wireless_rfkill,
1756                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1757                                 if (has_cap(ACER_CAP_THREEG))
1758                                         rfkill_set_sw_state(threeg_rfkill,
1759                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1760                                 if (has_cap(ACER_CAP_BLUETOOTH))
1761                                         rfkill_set_sw_state(bluetooth_rfkill,
1762                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1763                                 break;
1764                         case KEY_TOUCHPAD_TOGGLE:
1765                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1766                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1767                         }
1768                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1769                 }
1770                 break;
1771         case WMID_ACCEL_EVENT:
1772                 acer_gsensor_event();
1773                 break;
1774         default:
1775                 pr_warn("Unknown function number - %d - %d\n",
1776                         return_value.function, return_value.key_num);
1777                 break;
1778         }
1779 }
1780 
1781 static acpi_status __init
1782 wmid3_set_lm_mode(struct lm_input_params *params,
1783                   struct lm_return_value *return_value)
1784 {
1785         acpi_status status;
1786         union acpi_object *obj;
1787 
1788         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1789         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1790 
1791         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1792         if (ACPI_FAILURE(status))
1793                 return status;
1794 
1795         obj = output.pointer;
1796 
1797         if (!obj)
1798                 return AE_ERROR;
1799         else if (obj->type != ACPI_TYPE_BUFFER) {
1800                 kfree(obj);
1801                 return AE_ERROR;
1802         }
1803         if (obj->buffer.length != 4) {
1804                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1805                 kfree(obj);
1806                 return AE_ERROR;
1807         }
1808 
1809         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1810         kfree(obj);
1811 
1812         return status;
1813 }
1814 
1815 static int __init acer_wmi_enable_ec_raw(void)
1816 {
1817         struct lm_return_value return_value;
1818         acpi_status status;
1819         struct lm_input_params params = {
1820                 .function_num = 0x1,
1821                 .commun_devices = 0xFFFF,
1822                 .devices = 0xFFFF,
1823                 .lm_status = 0x00,            /* Launch Manager Deactive */
1824         };
1825 
1826         status = wmid3_set_lm_mode(&params, &return_value);
1827 
1828         if (return_value.error_code || return_value.ec_return_value)
1829                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1830                         return_value.error_code,
1831                         return_value.ec_return_value);
1832         else
1833                 pr_info("Enabled EC raw mode\n");
1834 
1835         return status;
1836 }
1837 
1838 static int __init acer_wmi_enable_lm(void)
1839 {
1840         struct lm_return_value return_value;
1841         acpi_status status;
1842         struct lm_input_params params = {
1843                 .function_num = 0x1,
1844                 .commun_devices = 0xFFFF,
1845                 .devices = 0xFFFF,
1846                 .lm_status = 0x01,            /* Launch Manager Active */
1847         };
1848 
1849         status = wmid3_set_lm_mode(&params, &return_value);
1850 
1851         if (return_value.error_code || return_value.ec_return_value)
1852                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1853                         return_value.error_code,
1854                         return_value.ec_return_value);
1855 
1856         return status;
1857 }
1858 
1859 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1860                                                 void *ctx, void **retval)
1861 {
1862         *(acpi_handle *)retval = ah;
1863         return AE_OK;
1864 }
1865 
1866 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1867                                         acpi_handle *ah)
1868 {
1869         acpi_status status;
1870         acpi_handle handle;
1871 
1872         BUG_ON(!name || !ah);
1873 
1874         handle = NULL;
1875         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1876                                         (void *)name, &handle);
1877 
1878         if (ACPI_SUCCESS(status)) {
1879                 *ah = handle;
1880                 return 0;
1881         } else {
1882                 return -ENODEV;
1883         }
1884 }
1885 
1886 static int __init acer_wmi_accel_setup(void)
1887 {
1888         int err;
1889 
1890         err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1891         if (err)
1892                 return err;
1893 
1894         interface->capability |= ACER_CAP_ACCEL;
1895 
1896         acer_wmi_accel_dev = input_allocate_device();
1897         if (!acer_wmi_accel_dev)
1898                 return -ENOMEM;
1899 
1900         acer_wmi_accel_dev->open = acer_gsensor_open;
1901 
1902         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1903         acer_wmi_accel_dev->phys = "wmi/input1";
1904         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1905         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1906         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1907         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1908         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1909 
1910         err = input_register_device(acer_wmi_accel_dev);
1911         if (err)
1912                 goto err_free_dev;
1913 
1914         return 0;
1915 
1916 err_free_dev:
1917         input_free_device(acer_wmi_accel_dev);
1918         return err;
1919 }
1920 
1921 static void acer_wmi_accel_destroy(void)
1922 {
1923         input_unregister_device(acer_wmi_accel_dev);
1924 }
1925 
1926 static int __init acer_wmi_input_setup(void)
1927 {
1928         acpi_status status;
1929         int err;
1930 
1931         acer_wmi_input_dev = input_allocate_device();
1932         if (!acer_wmi_input_dev)
1933                 return -ENOMEM;
1934 
1935         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1936         acer_wmi_input_dev->phys = "wmi/input0";
1937         acer_wmi_input_dev->id.bustype = BUS_HOST;
1938 
1939         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1940         if (err)
1941                 goto err_free_dev;
1942 
1943         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1944                                                 acer_wmi_notify, NULL);
1945         if (ACPI_FAILURE(status)) {
1946                 err = -EIO;
1947                 goto err_free_keymap;
1948         }
1949 
1950         err = input_register_device(acer_wmi_input_dev);
1951         if (err)
1952                 goto err_uninstall_notifier;
1953 
1954         return 0;
1955 
1956 err_uninstall_notifier:
1957         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1958 err_free_keymap:
1959         sparse_keymap_free(acer_wmi_input_dev);
1960 err_free_dev:
1961         input_free_device(acer_wmi_input_dev);
1962         return err;
1963 }
1964 
1965 static void acer_wmi_input_destroy(void)
1966 {
1967         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1968         sparse_keymap_free(acer_wmi_input_dev);
1969         input_unregister_device(acer_wmi_input_dev);
1970 }
1971 
1972 /*
1973  * debugfs functions
1974  */
1975 static u32 get_wmid_devices(void)
1976 {
1977         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1978         union acpi_object *obj;
1979         acpi_status status;
1980         u32 devices = 0;
1981 
1982         status = wmi_query_block(WMID_GUID2, 1, &out);
1983         if (ACPI_FAILURE(status))
1984                 return 0;
1985 
1986         obj = (union acpi_object *) out.pointer;
1987         if (obj) {
1988                 if (obj->type == ACPI_TYPE_BUFFER &&
1989                         (obj->buffer.length == sizeof(u32) ||
1990                         obj->buffer.length == sizeof(u64))) {
1991                         devices = *((u32 *) obj->buffer.pointer);
1992                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1993                         devices = (u32) obj->integer.value;
1994                 }
1995         }
1996 
1997         kfree(out.pointer);
1998         return devices;
1999 }
2000 
2001 /*
2002  * Platform device
2003  */
2004 static int acer_platform_probe(struct platform_device *device)
2005 {
2006         int err;
2007 
2008         if (has_cap(ACER_CAP_MAILLED)) {
2009                 err = acer_led_init(&device->dev);
2010                 if (err)
2011                         goto error_mailled;
2012         }
2013 
2014         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2015                 err = acer_backlight_init(&device->dev);
2016                 if (err)
2017                         goto error_brightness;
2018         }
2019 
2020         err = acer_rfkill_init(&device->dev);
2021         if (err)
2022                 goto error_rfkill;
2023 
2024         return err;
2025 
2026 error_rfkill:
2027         if (has_cap(ACER_CAP_BRIGHTNESS))
2028                 acer_backlight_exit();
2029 error_brightness:
2030         if (has_cap(ACER_CAP_MAILLED))
2031                 acer_led_exit();
2032 error_mailled:
2033         return err;
2034 }
2035 
2036 static int acer_platform_remove(struct platform_device *device)
2037 {
2038         if (has_cap(ACER_CAP_MAILLED))
2039                 acer_led_exit();
2040         if (has_cap(ACER_CAP_BRIGHTNESS))
2041                 acer_backlight_exit();
2042 
2043         acer_rfkill_exit();
2044         return 0;
2045 }
2046 
2047 #ifdef CONFIG_PM_SLEEP
2048 static int acer_suspend(struct device *dev)
2049 {
2050         u32 value;
2051         struct acer_data *data = &interface->data;
2052 
2053         if (!data)
2054                 return -ENOMEM;
2055 
2056         if (has_cap(ACER_CAP_MAILLED)) {
2057                 get_u32(&value, ACER_CAP_MAILLED);
2058                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2059                 data->mailled = value;
2060         }
2061 
2062         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2063                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2064                 data->brightness = value;
2065         }
2066 
2067         return 0;
2068 }
2069 
2070 static int acer_resume(struct device *dev)
2071 {
2072         struct acer_data *data = &interface->data;
2073 
2074         if (!data)
2075                 return -ENOMEM;
2076 
2077         if (has_cap(ACER_CAP_MAILLED))
2078                 set_u32(data->mailled, ACER_CAP_MAILLED);
2079 
2080         if (has_cap(ACER_CAP_BRIGHTNESS))
2081                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2082 
2083         if (has_cap(ACER_CAP_ACCEL))
2084                 acer_gsensor_init();
2085 
2086         return 0;
2087 }
2088 #else
2089 #define acer_suspend    NULL
2090 #define acer_resume     NULL
2091 #endif
2092 
2093 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2094 
2095 static void acer_platform_shutdown(struct platform_device *device)
2096 {
2097         struct acer_data *data = &interface->data;
2098 
2099         if (!data)
2100                 return;
2101 
2102         if (has_cap(ACER_CAP_MAILLED))
2103                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2104 }
2105 
2106 static struct platform_driver acer_platform_driver = {
2107         .driver = {
2108                 .name = "acer-wmi",
2109                 .owner = THIS_MODULE,
2110                 .pm = &acer_pm,
2111         },
2112         .probe = acer_platform_probe,
2113         .remove = acer_platform_remove,
2114         .shutdown = acer_platform_shutdown,
2115 };
2116 
2117 static struct platform_device *acer_platform_device;
2118 
2119 static int remove_sysfs(struct platform_device *device)
2120 {
2121         if (has_cap(ACER_CAP_THREEG))
2122                 device_remove_file(&device->dev, &dev_attr_threeg);
2123 
2124         device_remove_file(&device->dev, &dev_attr_interface);
2125 
2126         return 0;
2127 }
2128 
2129 static int __init create_sysfs(void)
2130 {
2131         int retval = -ENOMEM;
2132 
2133         if (has_cap(ACER_CAP_THREEG)) {
2134                 retval = device_create_file(&acer_platform_device->dev,
2135                         &dev_attr_threeg);
2136                 if (retval)
2137                         goto error_sysfs;
2138         }
2139 
2140         retval = device_create_file(&acer_platform_device->dev,
2141                 &dev_attr_interface);
2142         if (retval)
2143                 goto error_sysfs;
2144 
2145         return 0;
2146 
2147 error_sysfs:
2148                 remove_sysfs(acer_platform_device);
2149         return retval;
2150 }
2151 
2152 static void remove_debugfs(void)
2153 {
2154         debugfs_remove(interface->debug.devices);
2155         debugfs_remove(interface->debug.root);
2156 }
2157 
2158 static int __init create_debugfs(void)
2159 {
2160         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2161         if (!interface->debug.root) {
2162                 pr_err("Failed to create debugfs directory");
2163                 return -ENOMEM;
2164         }
2165 
2166         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2167                                         interface->debug.root,
2168                                         &interface->debug.wmid_devices);
2169         if (!interface->debug.devices)
2170                 goto error_debugfs;
2171 
2172         return 0;
2173 
2174 error_debugfs:
2175         remove_debugfs();
2176         return -ENOMEM;
2177 }
2178 
2179 static int __init acer_wmi_init(void)
2180 {
2181         int err;
2182 
2183         pr_info("Acer Laptop ACPI-WMI Extras\n");
2184 
2185         if (dmi_check_system(acer_blacklist)) {
2186                 pr_info("Blacklisted hardware detected - not loading\n");
2187                 return -ENODEV;
2188         }
2189 
2190         find_quirks();
2191 
2192         /*
2193          * Detect which ACPI-WMI interface we're using.
2194          */
2195         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2196                 interface = &AMW0_V2_interface;
2197 
2198         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2199                 interface = &wmid_interface;
2200 
2201         if (wmi_has_guid(WMID_GUID3))
2202                 interface = &wmid_v2_interface;
2203 
2204         if (interface)
2205                 dmi_walk(type_aa_dmi_decode, NULL);
2206 
2207         if (wmi_has_guid(WMID_GUID2) && interface) {
2208                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2209                         pr_err("Unable to detect available WMID devices\n");
2210                         return -ENODEV;
2211                 }
2212                 /* WMID always provides brightness methods */
2213                 interface->capability |= ACER_CAP_BRIGHTNESS;
2214         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2215                 pr_err("No WMID device detection method found\n");
2216                 return -ENODEV;
2217         }
2218 
2219         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2220                 interface = &AMW0_interface;
2221 
2222                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2223                         pr_err("Unable to detect available AMW0 devices\n");
2224                         return -ENODEV;
2225                 }
2226         }
2227 
2228         if (wmi_has_guid(AMW0_GUID1))
2229                 AMW0_find_mailled();
2230 
2231         if (!interface) {
2232                 pr_err("No or unsupported WMI interface, unable to load\n");
2233                 return -ENODEV;
2234         }
2235 
2236         set_quirks();
2237 
2238         if (dmi_check_system(video_vendor_dmi_table))
2239                 acpi_video_dmi_promote_vendor();
2240         if (acpi_video_backlight_support()) {
2241                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2242                 pr_info("Brightness must be controlled by acpi video driver\n");
2243         } else {
2244                 pr_info("Disabling ACPI video driver\n");
2245                 acpi_video_unregister_backlight();
2246         }
2247 
2248         if (wmi_has_guid(WMID_GUID3)) {
2249                 if (ec_raw_mode) {
2250                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2251                                 pr_err("Cannot enable EC raw mode\n");
2252                                 return -ENODEV;
2253                         }
2254                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2255                         pr_err("Cannot enable Launch Manager mode\n");
2256                         return -ENODEV;
2257                 }
2258         } else if (ec_raw_mode) {
2259                 pr_info("No WMID EC raw mode enable method\n");
2260         }
2261 
2262         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2263                 err = acer_wmi_input_setup();
2264                 if (err)
2265                         return err;
2266         }
2267 
2268         acer_wmi_accel_setup();
2269 
2270         err = platform_driver_register(&acer_platform_driver);
2271         if (err) {
2272                 pr_err("Unable to register platform driver\n");
2273                 goto error_platform_register;
2274         }
2275 
2276         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2277         if (!acer_platform_device) {
2278                 err = -ENOMEM;
2279                 goto error_device_alloc;
2280         }
2281 
2282         err = platform_device_add(acer_platform_device);
2283         if (err)
2284                 goto error_device_add;
2285 
2286         err = create_sysfs();
2287         if (err)
2288                 goto error_create_sys;
2289 
2290         if (wmi_has_guid(WMID_GUID2)) {
2291                 interface->debug.wmid_devices = get_wmid_devices();
2292                 err = create_debugfs();
2293                 if (err)
2294                         goto error_create_debugfs;
2295         }
2296 
2297         /* Override any initial settings with values from the commandline */
2298         acer_commandline_init();
2299 
2300         return 0;
2301 
2302 error_create_debugfs:
2303         remove_sysfs(acer_platform_device);
2304 error_create_sys:
2305         platform_device_del(acer_platform_device);
2306 error_device_add:
2307         platform_device_put(acer_platform_device);
2308 error_device_alloc:
2309         platform_driver_unregister(&acer_platform_driver);
2310 error_platform_register:
2311         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2312                 acer_wmi_input_destroy();
2313         if (has_cap(ACER_CAP_ACCEL))
2314                 acer_wmi_accel_destroy();
2315 
2316         return err;
2317 }
2318 
2319 static void __exit acer_wmi_exit(void)
2320 {
2321         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2322                 acer_wmi_input_destroy();
2323 
2324         if (has_cap(ACER_CAP_ACCEL))
2325                 acer_wmi_accel_destroy();
2326 
2327         remove_sysfs(acer_platform_device);
2328         remove_debugfs();
2329         platform_device_unregister(acer_platform_device);
2330         platform_driver_unregister(&acer_platform_driver);
2331 
2332         pr_info("Acer Laptop WMI Extras unloaded\n");
2333         return;
2334 }
2335 
2336 module_init(acer_wmi_init);
2337 module_exit(acer_wmi_exit);
2338 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us