drivers/platform/x86/acer-wmi.c

   1 /*
   2  *  Acer WMI Laptop Extras
   3  *
   4  *  Copyright (C) 2007-2009     Carlos Corbacho <[email protected]>
   5  *
   6  *  Based on acer_acpi:
   7  *    Copyright (C) 2005-2007   E.M. Smith
   8  *    Copyright (C) 2007-2008   Carlos Corbacho <[email protected]>
   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_KEY, 0x86, {KEY_WLAN} },
 132         {KE_KEY, 0x87, {KEY_POWER} },
 133         {KE_END, 0}
 134 };
 135
 136 static struct input_dev *acer_wmi_input_dev;
 137 static struct input_dev *acer_wmi_accel_dev;
 138
 139 struct event_return_value {
 140         u8 function;
 141         u8 key_num;
 142         u16 device_state;
 143         u32 reserved;
 144 } __attribute__((packed));
 145
 146 /*
 147  * GUID3 Get Device Status device flags
 148  */
 149 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 150 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 151 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 152 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 153 #define ACER_WMID3_GDS_RFBTN            (1<<14) /* RF Button */
 154
 155 #define ACER_WMID3_GDS_TOUCHPAD         (1<<1)  /* Touchpad */
 156
 157 /* Hotkey Customized Setting and Acer Application Status.
 158  * Set Device Default Value and Report Acer Application Status.
 159  * When Acer Application starts, it will run this method to inform
 160  * BIOS/EC that Acer Application is on.
 161  * App Status
 162  *      Bit[0]: Launch Manager Status
 163  *      Bit[1]: ePM Status
 164  *      Bit[2]: Device Control Status
 165  *      Bit[3]: Acer Power Button Utility Status
 166  *      Bit[4]: RF Button Status
 167  *      Bit[5]: ODD PM Status
 168  *      Bit[6]: Device Default Value Control
 169  *      Bit[7]: Hall Sensor Application Status
 170  */
 171 struct func_input_params {
 172         u8 function_num;        /* Function Number */
 173         u16 commun_devices;     /* Communication type devices default status */
 174         u16 devices;            /* Other type devices default status */
 175         u8 app_status;          /* Acer Device Status. LM, ePM, RF Button... */
 176         u8 app_mask;            /* Bit mask to app_status */
 177         u8 reserved;
 178 } __attribute__((packed));
 179
 180 struct func_return_value {
 181         u8 error_code;          /* Error Code */
 182         u8 ec_return_value;     /* EC Return Value */
 183         u16 reserved;
 184 } __attribute__((packed));
 185
 186 struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 187         u8 function_num;        /* Function Number */
 188         u8 hotkey_number;       /* Hotkey Number */
 189         u16 devices;            /* Set Device */
 190         u8 volume_value;        /* Volume Value */
 191 } __attribute__((packed));
 192
 193 struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 194         u8 function_num;        /* Function Number */
 195         u8 hotkey_number;       /* Hotkey Number */
 196         u16 devices;            /* Get Device */
 197 } __attribute__((packed));
 198
 199 struct wmid3_gds_return_value { /* Get Device Status return value*/
 200         u8 error_code;          /* Error Code */
 201         u8 ec_return_value;     /* EC Return Value */
 202         u16 devices;            /* Current Device Status */
 203         u32 reserved;
 204 } __attribute__((packed));
 205
 206 struct hotkey_function_type_aa {
 207         u8 type;
 208         u8 length;
 209         u16 handle;
 210         u16 commun_func_bitmap;
 211         u16 application_func_bitmap;
 212         u16 media_func_bitmap;
 213         u16 display_func_bitmap;
 214         u16 others_func_bitmap;
 215         u8 commun_fn_key_number;
 216 } __attribute__((packed));
 217
 218 /*
 219  * Interface capability flags
 220  */
 221 #define ACER_CAP_MAILLED                (1<<0)
 222 #define ACER_CAP_WIRELESS               (1<<1)
 223 #define ACER_CAP_BLUETOOTH              (1<<2)
 224 #define ACER_CAP_BRIGHTNESS             (1<<3)
 225 #define ACER_CAP_THREEG                 (1<<4)
 226 #define ACER_CAP_ACCEL                  (1<<5)
 227 #define ACER_CAP_RFBTN                  (1<<6)
 228 #define ACER_CAP_ANY                    (0xFFFFFFFF)
 229
 230 /*
 231  * Interface type flags
 232  */
 233 enum interface_flags {
 234         ACER_AMW0,
 235         ACER_AMW0_V2,
 236         ACER_WMID,
 237         ACER_WMID_v2,
 238 };
 239
 240 #define ACER_DEFAULT_WIRELESS  0
 241 #define ACER_DEFAULT_BLUETOOTH 0
 242 #define ACER_DEFAULT_MAILLED   0
 243 #define ACER_DEFAULT_THREEG    0
 244
 245 static int max_brightness = 0xF;
 246
 247 static int mailled = -1;
 248 static int brightness = -1;
 249 static int threeg = -1;
 250 static int force_series;
 251 static bool ec_raw_mode;
 252 static bool has_type_aa;
 253 static u16 commun_func_bitmap;
 254 static u8 commun_fn_key_number;
 255
 256 module_param(mailled, int, 0444);
 257 module_param(brightness, int, 0444);
 258 module_param(threeg, int, 0444);
 259 module_param(force_series, int, 0444);
 260 module_param(ec_raw_mode, bool, 0444);
 261 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 262 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 263 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 264 MODULE_PARM_DESC(force_series, "Force a different laptop series");
 265 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 266
 267 struct acer_data {
 268         int mailled;
 269         int threeg;
 270         int brightness;
 271 };
 272
 273 struct acer_debug {
 274         struct dentry *root;
 275         struct dentry *devices;
 276         u32 wmid_devices;
 277 };
 278
 279 static struct rfkill *wireless_rfkill;
 280 static struct rfkill *bluetooth_rfkill;
 281 static struct rfkill *threeg_rfkill;
 282 static bool rfkill_inited;
 283
 284 /* Each low-level interface must define at least some of the following */
 285 struct wmi_interface {
 286         /* The WMI device type */
 287         u32 type;
 288
 289         /* The capabilities this interface provides */
 290         u32 capability;
 291
 292         /* Private data for the current interface */
 293         struct acer_data data;
 294
 295         /* debugfs entries associated with this interface */
 296         struct acer_debug debug;
 297 };
 298
 299 /* The static interface pointer, points to the currently detected interface */
 300 static struct wmi_interface *interface;
 301
 302 /*
 303  * Embedded Controller quirks
 304  * Some laptops require us to directly access the EC to either enable or query
 305  * features that are not available through WMI.
 306  */
 307
 308 struct quirk_entry {
 309         u8 wireless;
 310         u8 mailled;
 311         s8 brightness;
 312         u8 bluetooth;
 313 };
 314
 315 static struct quirk_entry *quirks;
 316
 317 static void __init set_quirks(void)
 318 {
 319         if (!interface)
 320                 return;
 321
 322         if (quirks->mailled)
 323                 interface->capability |= ACER_CAP_MAILLED;
 324
 325         if (quirks->brightness)
 326                 interface->capability |= ACER_CAP_BRIGHTNESS;
 327 }
 328
 329 static int __init dmi_matched(const struct dmi_system_id *dmi)
 330 {
 331         quirks = dmi->driver_data;
 332         return 1;
 333 }
 334
 335 static struct quirk_entry quirk_unknown = {
 336 };
 337
 338 static struct quirk_entry quirk_acer_aspire_1520 = {
 339         .brightness = -1,
 340 };
 341
 342 static struct quirk_entry quirk_acer_travelmate_2490 = {
 343         .mailled = 1,
 344 };
 345
 346 /* This AMW0 laptop has no bluetooth */
 347 static struct quirk_entry quirk_medion_md_98300 = {
 348         .wireless = 1,
 349 };
 350
 351 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 352         .wireless = 2,
 353 };
 354
 355 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 356         .wireless = 3,
 357 };
 358
 359 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
 360 static const struct dmi_system_id acer_blacklist[] __initconst = {
 361         {
 362                 .ident = "Acer Aspire One (SSD)",
 363                 .matches = {
 364                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 365                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 366                 },
 367         },
 368         {
 369                 .ident = "Acer Aspire One (HDD)",
 370                 .matches = {
 371                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 372                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 373                 },
 374         },
 375         {}
 376 };
 377
 378 static const struct dmi_system_id amw0_whitelist[] __initconst = {
 379         {
 380                 .ident = "Acer",
 381                 .matches = {
 382                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 383                 },
 384         },
 385         {
 386                 .ident = "Gateway",
 387                 .matches = {
 388                         DMI_MATCH(DMI_SYS_VENDOR, "Gateway"),
 389                 },
 390         },
 391         {
 392                 .ident = "Packard Bell",
 393                 .matches = {
 394                         DMI_MATCH(DMI_SYS_VENDOR, "Packard Bell"),
 395                 },
 396         },
 397         {}
 398 };
 399
 400 /*
 401  * This quirk table is only for Acer/Gateway/Packard Bell family
 402  * that those machines are supported by acer-wmi driver.
 403  */
 404 static const struct dmi_system_id acer_quirks[] __initconst = {
 405         {
 406                 .callback = dmi_matched,
 407                 .ident = "Acer Aspire 1360",
 408                 .matches = {
 409                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 410                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 411                 },
 412                 .driver_data = &quirk_acer_aspire_1520,
 413         },
 414         {
 415                 .callback = dmi_matched,
 416                 .ident = "Acer Aspire 1520",
 417                 .matches = {
 418                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 419                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 420                 },
 421                 .driver_data = &quirk_acer_aspire_1520,
 422         },
 423         {
 424                 .callback = dmi_matched,
 425                 .ident = "Acer Aspire 3100",
 426                 .matches = {
 427                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 428                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 429                 },
 430                 .driver_data = &quirk_acer_travelmate_2490,
 431         },
 432         {
 433                 .callback = dmi_matched,
 434                 .ident = "Acer Aspire 3610",
 435                 .matches = {
 436                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 437                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 438                 },
 439                 .driver_data = &quirk_acer_travelmate_2490,
 440         },
 441         {
 442                 .callback = dmi_matched,
 443                 .ident = "Acer Aspire 5100",
 444                 .matches = {
 445                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 446                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 447                 },
 448                 .driver_data = &quirk_acer_travelmate_2490,
 449         },
 450         {
 451                 .callback = dmi_matched,
 452                 .ident = "Acer Aspire 5610",
 453                 .matches = {
 454                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 455                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 456                 },
 457                 .driver_data = &quirk_acer_travelmate_2490,
 458         },
 459         {
 460                 .callback = dmi_matched,
 461                 .ident = "Acer Aspire 5630",
 462                 .matches = {
 463                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 464                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 465                 },
 466                 .driver_data = &quirk_acer_travelmate_2490,
 467         },
 468         {
 469                 .callback = dmi_matched,
 470                 .ident = "Acer Aspire 5650",
 471                 .matches = {
 472                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 473                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 474                 },
 475                 .driver_data = &quirk_acer_travelmate_2490,
 476         },
 477         {
 478                 .callback = dmi_matched,
 479                 .ident = "Acer Aspire 5680",
 480                 .matches = {
 481                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 482                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 483                 },
 484                 .driver_data = &quirk_acer_travelmate_2490,
 485         },
 486         {
 487                 .callback = dmi_matched,
 488                 .ident = "Acer Aspire 9110",
 489                 .matches = {
 490                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 491                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 492                 },
 493                 .driver_data = &quirk_acer_travelmate_2490,
 494         },
 495         {
 496                 .callback = dmi_matched,
 497                 .ident = "Acer TravelMate 2490",
 498                 .matches = {
 499                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 500                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 501                 },
 502                 .driver_data = &quirk_acer_travelmate_2490,
 503         },
 504         {
 505                 .callback = dmi_matched,
 506                 .ident = "Acer TravelMate 4200",
 507                 .matches = {
 508                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 509                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 510                 },
 511                 .driver_data = &quirk_acer_travelmate_2490,
 512         },
 513         {}
 514 };
 515
 516 /*
 517  * This quirk list is for those non-acer machines that have AMW0_GUID1
 518  * but supported by acer-wmi in past days. Keeping this quirk list here
 519  * is only for backward compatible. Please do not add new machine to
 520  * here anymore. Those non-acer machines should be supported by
 521  * appropriate wmi drivers.
 522  */
 523 static const struct dmi_system_id non_acer_quirks[] __initconst = {
 524         {
 525                 .callback = dmi_matched,
 526                 .ident = "Fujitsu Siemens Amilo Li 1718",
 527                 .matches = {
 528                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 529                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 530                 },
 531                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 532         },
 533         {
 534                 .callback = dmi_matched,
 535                 .ident = "Medion MD 98300",
 536                 .matches = {
 537                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 538                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 539                 },
 540                 .driver_data = &quirk_medion_md_98300,
 541         },
 542         {
 543                 .callback = dmi_matched,
 544                 .ident = "Lenovo Ideapad S205",
 545                 .matches = {
 546                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 547                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 548                 },
 549                 .driver_data = &quirk_lenovo_ideapad_s205,
 550         },
 551         {
 552                 .callback = dmi_matched,
 553                 .ident = "Lenovo Ideapad S205 (Brazos)",
 554                 .matches = {
 555                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 556                         DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 557                 },
 558                 .driver_data = &quirk_lenovo_ideapad_s205,
 559         },
 560         {
 561                 .callback = dmi_matched,
 562                 .ident = "Lenovo 3000 N200",
 563                 .matches = {
 564                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 565                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 566                 },
 567                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 568         },
 569         {
 570                 .callback = dmi_matched,
 571                 .ident = "Lenovo Ideapad S205-10382JG",
 572                 .matches = {
 573                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 574                         DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
 575                 },
 576                 .driver_data = &quirk_lenovo_ideapad_s205,
 577         },
 578         {
 579                 .callback = dmi_matched,
 580                 .ident = "Lenovo Ideapad S205-1038DPG",
 581                 .matches = {
 582                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 583                         DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
 584                 },
 585                 .driver_data = &quirk_lenovo_ideapad_s205,
 586         },
 587         {}
 588 };
 589
 590 static int __init
 591 video_set_backlight_video_vendor(const struct dmi_system_id *d)
 592 {
 593         interface->capability &= ~ACER_CAP_BRIGHTNESS;
 594         pr_info("Brightness must be controlled by generic video driver\n");
 595         return 0;
 596 }
 597
 598 static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
 599         {
 600                 .callback = video_set_backlight_video_vendor,
 601                 .ident = "Acer TravelMate 4750",
 602                 .matches = {
 603                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 604                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 605                 },
 606         },
 607         {
 608                 .callback = video_set_backlight_video_vendor,
 609                 .ident = "Acer Extensa 5235",
 610                 .matches = {
 611                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 612                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 613                 },
 614         },
 615         {
 616                 .callback = video_set_backlight_video_vendor,
 617                 .ident = "Acer TravelMate 5760",
 618                 .matches = {
 619                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 620                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 621                 },
 622         },
 623         {
 624                 .callback = video_set_backlight_video_vendor,
 625                 .ident = "Acer Aspire 5750",
 626                 .matches = {
 627                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 628                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 629                 },
 630         },
 631         {
 632                 .callback = video_set_backlight_video_vendor,
 633                 .ident = "Acer Aspire 5741",
 634                 .matches = {
 635                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 636                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
 637                 },
 638         },
 639         {
 640                 /*
 641                  * Note no video_set_backlight_video_vendor, we must use the
 642                  * acer interface, as there is no native backlight interface.
 643                  */
 644                 .ident = "Acer KAV80",
 645                 .matches = {
 646                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 647                         DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
 648                 },
 649         },
 650         {}
 651 };
 652
 653 /* Find which quirks are needed for a particular vendor/ model pair */
 654 static void __init find_quirks(void)
 655 {
 656         if (!force_series) {
 657                 dmi_check_system(acer_quirks);
 658                 dmi_check_system(non_acer_quirks);
 659         } else if (force_series == 2490) {
 660                 quirks = &quirk_acer_travelmate_2490;
 661         }
 662
 663         if (quirks == NULL)
 664                 quirks = &quirk_unknown;
 665
 666         set_quirks();
 667 }
 668
 669 /*
 670  * General interface convenience methods
 671  */
 672
 673 static bool has_cap(u32 cap)
 674 {
 675         if ((interface->capability & cap) != 0)
 676                 return 1;
 677
 678         return 0;
 679 }
 680
 681 /*
 682  * AMW0 (V1) interface
 683  */
 684 struct wmab_args {
 685         u32 eax;
 686         u32 ebx;
 687         u32 ecx;
 688         u32 edx;
 689 };
 690
 691 struct wmab_ret {
 692         u32 eax;
 693         u32 ebx;
 694         u32 ecx;
 695         u32 edx;
 696         u32 eex;
 697 };
 698
 699 static acpi_status wmab_execute(struct wmab_args *regbuf,
 700 struct acpi_buffer *result)
 701 {
 702         struct acpi_buffer input;
 703         acpi_status status;
 704         input.length = sizeof(struct wmab_args);
 705         input.pointer = (u8 *)regbuf;
 706
 707         status = wmi_evaluate_method(AMW0_GUID1, 0, 1, &input, result);
 708
 709         return status;
 710 }
 711
 712 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 713 {
 714         int err;
 715         u8 result;
 716
 717         switch (cap) {
 718         case ACER_CAP_MAILLED:
 719                 switch (quirks->mailled) {
 720                 default:
 721                         err = ec_read(0xA, &result);
 722                         if (err)
 723                                 return AE_ERROR;
 724                         *value = (result >> 7) & 0x1;
 725                         return AE_OK;
 726                 }
 727                 break;
 728         case ACER_CAP_WIRELESS:
 729                 switch (quirks->wireless) {
 730                 case 1:
 731                         err = ec_read(0x7B, &result);
 732                         if (err)
 733                                 return AE_ERROR;
 734                         *value = result & 0x1;
 735                         return AE_OK;
 736                 case 2:
 737                         err = ec_read(0x71, &result);
 738                         if (err)
 739                                 return AE_ERROR;
 740                         *value = result & 0x1;
 741                         return AE_OK;
 742                 case 3:
 743                         err = ec_read(0x78, &result);
 744                         if (err)
 745                                 return AE_ERROR;
 746                         *value = result & 0x1;
 747                         return AE_OK;
 748                 default:
 749                         err = ec_read(0xA, &result);
 750                         if (err)
 751                                 return AE_ERROR;
 752                         *value = (result >> 2) & 0x1;
 753                         return AE_OK;
 754                 }
 755                 break;
 756         case ACER_CAP_BLUETOOTH:
 757                 switch (quirks->bluetooth) {
 758                 default:
 759                         err = ec_read(0xA, &result);
 760                         if (err)
 761                                 return AE_ERROR;
 762                         *value = (result >> 4) & 0x1;
 763                         return AE_OK;
 764                 }
 765                 break;
 766         case ACER_CAP_BRIGHTNESS:
 767                 switch (quirks->brightness) {
 768                 default:
 769                         err = ec_read(0x83, &result);
 770                         if (err)
 771                                 return AE_ERROR;
 772                         *value = result;
 773                         return AE_OK;
 774                 }
 775                 break;
 776         default:
 777                 return AE_ERROR;
 778         }
 779         return AE_OK;
 780 }
 781
 782 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 783 {
 784         struct wmab_args args;
 785
 786         args.eax = ACER_AMW0_WRITE;
 787         args.ebx = value ? (1<<8) : 0;
 788         args.ecx = args.edx = 0;
 789
 790         switch (cap) {
 791         case ACER_CAP_MAILLED:
 792                 if (value > 1)
 793                         return AE_BAD_PARAMETER;
 794                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 795                 break;
 796         case ACER_CAP_WIRELESS:
 797                 if (value > 1)
 798                         return AE_BAD_PARAMETER;
 799                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 800                 break;
 801         case ACER_CAP_BLUETOOTH:
 802                 if (value > 1)
 803                         return AE_BAD_PARAMETER;
 804                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 805                 break;
 806         case ACER_CAP_BRIGHTNESS:
 807                 if (value > max_brightness)
 808                         return AE_BAD_PARAMETER;
 809                 switch (quirks->brightness) {
 810                 default:
 811                         return ec_write(0x83, value);
 812                         break;
 813                 }
 814         default:
 815                 return AE_ERROR;
 816         }
 817
 818         /* Actually do the set */
 819         return wmab_execute(&args, NULL);
 820 }
 821
 822 static acpi_status __init AMW0_find_mailled(void)
 823 {
 824         struct wmab_args args;
 825         struct wmab_ret ret;
 826         acpi_status status = AE_OK;
 827         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 828         union acpi_object *obj;
 829
 830         args.eax = 0x86;
 831         args.ebx = args.ecx = args.edx = 0;
 832
 833         status = wmab_execute(&args, &out);
 834         if (ACPI_FAILURE(status))
 835                 return status;
 836
 837         obj = (union acpi_object *) out.pointer;
 838         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 839         obj->buffer.length == sizeof(struct wmab_ret)) {
 840                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 841         } else {
 842                 kfree(out.pointer);
 843                 return AE_ERROR;
 844         }
 845
 846         if (ret.eex & 0x1)
 847                 interface->capability |= ACER_CAP_MAILLED;
 848
 849         kfree(out.pointer);
 850
 851         return AE_OK;
 852 }
 853
 854 static const struct acpi_device_id norfkill_ids[] __initconst = {
 855         { "VPC2004", 0},
 856         { "IBM0068", 0},
 857         { "LEN0068", 0},
 858         { "SNY5001", 0},        /* sony-laptop in charge */
 859         { "HPQ6601", 0},
 860         { "", 0},
 861 };
 862
 863 static int __init AMW0_set_cap_acpi_check_device(void)
 864 {
 865         const struct acpi_device_id *id;
 866
 867         for (id = norfkill_ids; id->id[0]; id++)
 868                 if (acpi_dev_found(id->id))
 869                         return true;
 870
 871         return false;
 872 }
 873
 874 static acpi_status __init AMW0_set_capabilities(void)
 875 {
 876         struct wmab_args args;
 877         struct wmab_ret ret;
 878         acpi_status status;
 879         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 880         union acpi_object *obj;
 881
 882         /*
 883          * On laptops with this strange GUID (non Acer), normal probing doesn't
 884          * work.
 885          */
 886         if (wmi_has_guid(AMW0_GUID2)) {
 887                 if ((quirks != &quirk_unknown) ||
 888                     !AMW0_set_cap_acpi_check_device())
 889                         interface->capability |= ACER_CAP_WIRELESS;
 890                 return AE_OK;
 891         }
 892
 893         args.eax = ACER_AMW0_WRITE;
 894         args.ecx = args.edx = 0;
 895
 896         args.ebx = 0xa2 << 8;
 897         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 898
 899         status = wmab_execute(&args, &out);
 900         if (ACPI_FAILURE(status))
 901                 return status;
 902
 903         obj = out.pointer;
 904         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 905         obj->buffer.length == sizeof(struct wmab_ret)) {
 906                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 907         } else {
 908                 status = AE_ERROR;
 909                 goto out;
 910         }
 911
 912         if (ret.eax & 0x1)
 913                 interface->capability |= ACER_CAP_WIRELESS;
 914
 915         args.ebx = 2 << 8;
 916         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 917
 918         /*
 919          * It's ok to use existing buffer for next wmab_execute call.
 920          * But we need to kfree(out.pointer) if next wmab_execute fail.
 921          */
 922         status = wmab_execute(&args, &out);
 923         if (ACPI_FAILURE(status))
 924                 goto out;
 925
 926         obj = (union acpi_object *) out.pointer;
 927         if (obj && obj->type == ACPI_TYPE_BUFFER
 928         && obj->buffer.length == sizeof(struct wmab_ret)) {
 929                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 930         } else {
 931                 status = AE_ERROR;
 932                 goto out;
 933         }
 934
 935         if (ret.eax & 0x1)
 936                 interface->capability |= ACER_CAP_BLUETOOTH;
 937
 938         /*
 939          * This appears to be safe to enable, since all Wistron based laptops
 940          * appear to use the same EC register for brightness, even if they
 941          * differ for wireless, etc
 942          */
 943         if (quirks->brightness >= 0)
 944                 interface->capability |= ACER_CAP_BRIGHTNESS;
 945
 946         status = AE_OK;
 947 out:
 948         kfree(out.pointer);
 949         return status;
 950 }
 951
 952 static struct wmi_interface AMW0_interface = {
 953         .type = ACER_AMW0,
 954 };
 955
 956 static struct wmi_interface AMW0_V2_interface = {
 957         .type = ACER_AMW0_V2,
 958 };
 959
 960 /*
 961  * New interface (The WMID interface)
 962  */
 963 static acpi_status
 964 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 965 {
 966         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 967         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 968         union acpi_object *obj;
 969         u32 tmp = 0;
 970         acpi_status status;
 971
 972         status = wmi_evaluate_method(WMID_GUID1, 0, method_id, &input, &result);
 973
 974         if (ACPI_FAILURE(status))
 975                 return status;
 976
 977         obj = (union acpi_object *) result.pointer;
 978         if (obj) {
 979                 if (obj->type == ACPI_TYPE_BUFFER &&
 980                         (obj->buffer.length == sizeof(u32) ||
 981                         obj->buffer.length == sizeof(u64))) {
 982                         tmp = *((u32 *) obj->buffer.pointer);
 983                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 984                         tmp = (u32) obj->integer.value;
 985                 }
 986         }
 987
 988         if (out)
 989                 *out = tmp;
 990
 991         kfree(result.pointer);
 992
 993         return status;
 994 }
 995
 996 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 997 {
 998         acpi_status status;
 999         u8 tmp;
1000         u32 result, method_id = 0;
1001
1002         switch (cap) {
1003         case ACER_CAP_WIRELESS:
1004                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
1005                 break;
1006         case ACER_CAP_BLUETOOTH:
1007                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
1008                 break;
1009         case ACER_CAP_BRIGHTNESS:
1010                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
1011                 break;
1012         case ACER_CAP_THREEG:
1013                 method_id = ACER_WMID_GET_THREEG_METHODID;
1014                 break;
1015         case ACER_CAP_MAILLED:
1016                 if (quirks->mailled == 1) {
1017                         ec_read(0x9f, &tmp);
1018                         *value = tmp & 0x1;
1019                         return 0;
1020                 }
1021         default:
1022                 return AE_ERROR;
1023         }
1024         status = WMI_execute_u32(method_id, 0, &result);
1025
1026         if (ACPI_SUCCESS(status))
1027                 *value = (u8)result;
1028
1029         return status;
1030 }
1031
1032 static acpi_status WMID_set_u32(u32 value, u32 cap)
1033 {
1034         u32 method_id = 0;
1035         char param;
1036
1037         switch (cap) {
1038         case ACER_CAP_BRIGHTNESS:
1039                 if (value > max_brightness)
1040                         return AE_BAD_PARAMETER;
1041                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
1042                 break;
1043         case ACER_CAP_WIRELESS:
1044                 if (value > 1)
1045                         return AE_BAD_PARAMETER;
1046                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
1047                 break;
1048         case ACER_CAP_BLUETOOTH:
1049                 if (value > 1)
1050                         return AE_BAD_PARAMETER;
1051                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
1052                 break;
1053         case ACER_CAP_THREEG:
1054                 if (value > 1)
1055                         return AE_BAD_PARAMETER;
1056                 method_id = ACER_WMID_SET_THREEG_METHODID;
1057                 break;
1058         case ACER_CAP_MAILLED:
1059                 if (value > 1)
1060                         return AE_BAD_PARAMETER;
1061                 if (quirks->mailled == 1) {
1062                         param = value ? 0x92 : 0x93;
1063                         i8042_lock_chip();
1064                         i8042_command(&param, 0x1059);
1065                         i8042_unlock_chip();
1066                         return 0;
1067                 }
1068                 break;
1069         default:
1070                 return AE_ERROR;
1071         }
1072         return WMI_execute_u32(method_id, (u32)value, NULL);
1073 }
1074
1075 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1076 {
1077         struct wmid3_gds_return_value return_value;
1078         acpi_status status;
1079         union acpi_object *obj;
1080         struct wmid3_gds_get_input_param params = {
1081                 .function_num = 0x1,
1082                 .hotkey_number = commun_fn_key_number,
1083                 .devices = device,
1084         };
1085         struct acpi_buffer input = {
1086                 sizeof(struct wmid3_gds_get_input_param),
1087                 &params
1088         };
1089         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1090
1091         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1092         if (ACPI_FAILURE(status))
1093                 return status;
1094
1095         obj = output.pointer;
1096
1097         if (!obj)
1098                 return AE_ERROR;
1099         else if (obj->type != ACPI_TYPE_BUFFER) {
1100                 kfree(obj);
1101                 return AE_ERROR;
1102         }
1103         if (obj->buffer.length != 8) {
1104                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1105                 kfree(obj);
1106                 return AE_ERROR;
1107         }
1108
1109         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1110         kfree(obj);
1111
1112         if (return_value.error_code || return_value.ec_return_value)
1113                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1114                         device,
1115                         return_value.error_code,
1116                         return_value.ec_return_value);
1117         else
1118                 *value = !!(return_value.devices & device);
1119
1120         return status;
1121 }
1122
1123 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1124 {
1125         u16 device;
1126
1127         switch (cap) {
1128         case ACER_CAP_WIRELESS:
1129                 device = ACER_WMID3_GDS_WIRELESS;
1130                 break;
1131         case ACER_CAP_BLUETOOTH:
1132                 device = ACER_WMID3_GDS_BLUETOOTH;
1133                 break;
1134         case ACER_CAP_THREEG:
1135                 device = ACER_WMID3_GDS_THREEG;
1136                 break;
1137         default:
1138                 return AE_ERROR;
1139         }
1140         return wmid3_get_device_status(value, device);
1141 }
1142
1143 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1144 {
1145         struct wmid3_gds_return_value return_value;
1146         acpi_status status;
1147         union acpi_object *obj;
1148         u16 devices;
1149         struct wmid3_gds_get_input_param get_params = {
1150                 .function_num = 0x1,
1151                 .hotkey_number = commun_fn_key_number,
1152                 .devices = commun_func_bitmap,
1153         };
1154         struct acpi_buffer get_input = {
1155                 sizeof(struct wmid3_gds_get_input_param),
1156                 &get_params
1157         };
1158         struct wmid3_gds_set_input_param set_params = {
1159                 .function_num = 0x2,
1160                 .hotkey_number = commun_fn_key_number,
1161                 .devices = commun_func_bitmap,
1162         };
1163         struct acpi_buffer set_input = {
1164                 sizeof(struct wmid3_gds_set_input_param),
1165                 &set_params
1166         };
1167         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1168         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1169
1170         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1171         if (ACPI_FAILURE(status))
1172                 return status;
1173
1174         obj = output.pointer;
1175
1176         if (!obj)
1177                 return AE_ERROR;
1178         else if (obj->type != ACPI_TYPE_BUFFER) {
1179                 kfree(obj);
1180                 return AE_ERROR;
1181         }
1182         if (obj->buffer.length != 8) {
1183                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1184                 kfree(obj);
1185                 return AE_ERROR;
1186         }
1187
1188         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1189         kfree(obj);
1190
1191         if (return_value.error_code || return_value.ec_return_value) {
1192                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1193                         return_value.error_code,
1194                         return_value.ec_return_value);
1195                 return status;
1196         }
1197
1198         devices = return_value.devices;
1199         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1200
1201         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1202         if (ACPI_FAILURE(status))
1203                 return status;
1204
1205         obj = output2.pointer;
1206
1207         if (!obj)
1208                 return AE_ERROR;
1209         else if (obj->type != ACPI_TYPE_BUFFER) {
1210                 kfree(obj);
1211                 return AE_ERROR;
1212         }
1213         if (obj->buffer.length != 4) {
1214                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1215                 kfree(obj);
1216                 return AE_ERROR;
1217         }
1218
1219         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1220         kfree(obj);
1221
1222         if (return_value.error_code || return_value.ec_return_value)
1223                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1224                         return_value.error_code,
1225                         return_value.ec_return_value);
1226
1227         return status;
1228 }
1229
1230 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1231 {
1232         u16 device;
1233
1234         switch (cap) {
1235         case ACER_CAP_WIRELESS:
1236                 device = ACER_WMID3_GDS_WIRELESS;
1237                 break;
1238         case ACER_CAP_BLUETOOTH:
1239                 device = ACER_WMID3_GDS_BLUETOOTH;
1240                 break;
1241         case ACER_CAP_THREEG:
1242                 device = ACER_WMID3_GDS_THREEG;
1243                 break;
1244         default:
1245                 return AE_ERROR;
1246         }
1247         return wmid3_set_device_status(value, device);
1248 }
1249
1250 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1251 {
1252         struct hotkey_function_type_aa *type_aa;
1253
1254         /* We are looking for OEM-specific Type AAh */
1255         if (header->type != 0xAA)
1256                 return;
1257
1258         has_type_aa = true;
1259         type_aa = (struct hotkey_function_type_aa *) header;
1260
1261         pr_info("Function bitmap for Communication Button: 0x%x\n",
1262                 type_aa->commun_func_bitmap);
1263         commun_func_bitmap = type_aa->commun_func_bitmap;
1264
1265         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1266                 interface->capability |= ACER_CAP_WIRELESS;
1267         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1268                 interface->capability |= ACER_CAP_THREEG;
1269         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1270                 interface->capability |= ACER_CAP_BLUETOOTH;
1271         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_RFBTN) {
1272                 interface->capability |= ACER_CAP_RFBTN;
1273                 commun_func_bitmap &= ~ACER_WMID3_GDS_RFBTN;
1274         }
1275
1276         commun_fn_key_number = type_aa->commun_fn_key_number;
1277 }
1278
1279 static acpi_status __init WMID_set_capabilities(void)
1280 {
1281         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1282         union acpi_object *obj;
1283         acpi_status status;
1284         u32 devices;
1285
1286         status = wmi_query_block(WMID_GUID2, 0, &out);
1287         if (ACPI_FAILURE(status))
1288                 return status;
1289
1290         obj = (union acpi_object *) out.pointer;
1291         if (obj) {
1292                 if (obj->type == ACPI_TYPE_BUFFER &&
1293                         (obj->buffer.length == sizeof(u32) ||
1294                         obj->buffer.length == sizeof(u64))) {
1295                         devices = *((u32 *) obj->buffer.pointer);
1296                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1297                         devices = (u32) obj->integer.value;
1298                 } else {
1299                         kfree(out.pointer);
1300                         return AE_ERROR;
1301                 }
1302         } else {
1303                 kfree(out.pointer);
1304                 return AE_ERROR;
1305         }
1306
1307         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1308         if (devices & 0x07)
1309                 interface->capability |= ACER_CAP_WIRELESS;
1310         if (devices & 0x40)
1311                 interface->capability |= ACER_CAP_THREEG;
1312         if (devices & 0x10)
1313                 interface->capability |= ACER_CAP_BLUETOOTH;
1314
1315         if (!(devices & 0x20))
1316                 max_brightness = 0x9;
1317
1318         kfree(out.pointer);
1319         return status;
1320 }
1321
1322 static struct wmi_interface wmid_interface = {
1323         .type = ACER_WMID,
1324 };
1325
1326 static struct wmi_interface wmid_v2_interface = {
1327         .type = ACER_WMID_v2,
1328 };
1329
1330 /*
1331  * Generic Device (interface-independent)
1332  */
1333
1334 static acpi_status get_u32(u32 *value, u32 cap)
1335 {
1336         acpi_status status = AE_ERROR;
1337
1338         switch (interface->type) {
1339         case ACER_AMW0:
1340                 status = AMW0_get_u32(value, cap);
1341                 break;
1342         case ACER_AMW0_V2:
1343                 if (cap == ACER_CAP_MAILLED) {
1344                         status = AMW0_get_u32(value, cap);
1345                         break;
1346                 }
1347         case ACER_WMID:
1348                 status = WMID_get_u32(value, cap);
1349                 break;
1350         case ACER_WMID_v2:
1351                 if (cap & (ACER_CAP_WIRELESS |
1352                            ACER_CAP_BLUETOOTH |
1353                            ACER_CAP_THREEG))
1354                         status = wmid_v2_get_u32(value, cap);
1355                 else if (wmi_has_guid(WMID_GUID2))
1356                         status = WMID_get_u32(value, cap);
1357                 break;
1358         }
1359
1360         return status;
1361 }
1362
1363 static acpi_status set_u32(u32 value, u32 cap)
1364 {
1365         acpi_status status;
1366
1367         if (interface->capability & cap) {
1368                 switch (interface->type) {
1369                 case ACER_AMW0:
1370                         return AMW0_set_u32(value, cap);
1371                 case ACER_AMW0_V2:
1372                         if (cap == ACER_CAP_MAILLED)
1373                                 return AMW0_set_u32(value, cap);
1374
1375                         /*
1376                          * On some models, some WMID methods don't toggle
1377                          * properly. For those cases, we want to run the AMW0
1378                          * method afterwards to be certain we've really toggled
1379                          * the device state.
1380                          */
1381                         if (cap == ACER_CAP_WIRELESS ||
1382                                 cap == ACER_CAP_BLUETOOTH) {
1383                                 status = WMID_set_u32(value, cap);
1384                                 if (ACPI_FAILURE(status))
1385                                         return status;
1386
1387                                 return AMW0_set_u32(value, cap);
1388                         }
1389                 case ACER_WMID:
1390                         return WMID_set_u32(value, cap);
1391                 case ACER_WMID_v2:
1392                         if (cap & (ACER_CAP_WIRELESS |
1393                                    ACER_CAP_BLUETOOTH |
1394                                    ACER_CAP_THREEG))
1395                                 return wmid_v2_set_u32(value, cap);
1396                         else if (wmi_has_guid(WMID_GUID2))
1397                                 return WMID_set_u32(value, cap);
1398                 default:
1399                         return AE_BAD_PARAMETER;
1400                 }
1401         }
1402         return AE_BAD_PARAMETER;
1403 }
1404
1405 static void __init acer_commandline_init(void)
1406 {
1407         /*
1408          * These will all fail silently if the value given is invalid, or the
1409          * capability isn't available on the given interface
1410          */
1411         if (mailled >= 0)
1412                 set_u32(mailled, ACER_CAP_MAILLED);
1413         if (!has_type_aa && threeg >= 0)
1414                 set_u32(threeg, ACER_CAP_THREEG);
1415         if (brightness >= 0)
1416                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1417 }
1418
1419 /*
1420  * LED device (Mail LED only, no other LEDs known yet)
1421  */
1422 static void mail_led_set(struct led_classdev *led_cdev,
1423 enum led_brightness value)
1424 {
1425         set_u32(value, ACER_CAP_MAILLED);
1426 }
1427
1428 static struct led_classdev mail_led = {
1429         .name = "acer-wmi::mail",
1430         .brightness_set = mail_led_set,
1431 };
1432
1433 static int acer_led_init(struct device *dev)
1434 {
1435         return led_classdev_register(dev, &mail_led);
1436 }
1437
1438 static void acer_led_exit(void)
1439 {
1440         set_u32(LED_OFF, ACER_CAP_MAILLED);
1441         led_classdev_unregister(&mail_led);
1442 }
1443
1444 /*
1445  * Backlight device
1446  */
1447 static struct backlight_device *acer_backlight_device;
1448
1449 static int read_brightness(struct backlight_device *bd)
1450 {
1451         u32 value;
1452         get_u32(&value, ACER_CAP_BRIGHTNESS);
1453         return value;
1454 }
1455
1456 static int update_bl_status(struct backlight_device *bd)
1457 {
1458         int intensity = bd->props.brightness;
1459
1460         if (bd->props.power != FB_BLANK_UNBLANK)
1461                 intensity = 0;
1462         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1463                 intensity = 0;
1464
1465         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1466
1467         return 0;
1468 }
1469
1470 static const struct backlight_ops acer_bl_ops = {
1471         .get_brightness = read_brightness,
1472         .update_status = update_bl_status,
1473 };
1474
1475 static int acer_backlight_init(struct device *dev)
1476 {
1477         struct backlight_properties props;
1478         struct backlight_device *bd;
1479
1480         memset(&props, 0, sizeof(struct backlight_properties));
1481         props.type = BACKLIGHT_PLATFORM;
1482         props.max_brightness = max_brightness;
1483         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1484                                        &props);
1485         if (IS_ERR(bd)) {
1486                 pr_err("Could not register Acer backlight device\n");
1487                 acer_backlight_device = NULL;
1488                 return PTR_ERR(bd);
1489         }
1490
1491         acer_backlight_device = bd;
1492
1493         bd->props.power = FB_BLANK_UNBLANK;
1494         bd->props.brightness = read_brightness(bd);
1495         backlight_update_status(bd);
1496         return 0;
1497 }
1498
1499 static void acer_backlight_exit(void)
1500 {
1501         backlight_device_unregister(acer_backlight_device);
1502 }
1503
1504 /*
1505  * Accelerometer device
1506  */
1507 static acpi_handle gsensor_handle;
1508
1509 static int acer_gsensor_init(void)
1510 {
1511         acpi_status status;
1512         struct acpi_buffer output;
1513         union acpi_object out_obj;
1514
1515         output.length = sizeof(out_obj);
1516         output.pointer = &out_obj;
1517         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1518         if (ACPI_FAILURE(status))
1519                 return -1;
1520
1521         return 0;
1522 }
1523
1524 static int acer_gsensor_open(struct input_dev *input)
1525 {
1526         return acer_gsensor_init();
1527 }
1528
1529 static int acer_gsensor_event(void)
1530 {
1531         acpi_status status;
1532         struct acpi_buffer output;
1533         union acpi_object out_obj[5];
1534
1535         if (!has_cap(ACER_CAP_ACCEL))
1536                 return -1;
1537
1538         output.length = sizeof(out_obj);
1539         output.pointer = out_obj;
1540
1541         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1542         if (ACPI_FAILURE(status))
1543                 return -1;
1544
1545         if (out_obj->package.count != 4)
1546                 return -1;
1547
1548         input_report_abs(acer_wmi_accel_dev, ABS_X,
1549                 (s16)out_obj->package.elements[0].integer.value);
1550         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1551                 (s16)out_obj->package.elements[1].integer.value);
1552         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1553                 (s16)out_obj->package.elements[2].integer.value);
1554         input_sync(acer_wmi_accel_dev);
1555         return 0;
1556 }
1557
1558 /*
1559  * Rfkill devices
1560  */
1561 static void acer_rfkill_update(struct work_struct *ignored);
1562 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1563 static void acer_rfkill_update(struct work_struct *ignored)
1564 {
1565         u32 state;
1566         acpi_status status;
1567
1568         if (has_cap(ACER_CAP_WIRELESS)) {
1569                 status = get_u32(&state, ACER_CAP_WIRELESS);
1570                 if (ACPI_SUCCESS(status)) {
1571                         if (quirks->wireless == 3)
1572                                 rfkill_set_hw_state(wireless_rfkill, !state);
1573                         else
1574                                 rfkill_set_sw_state(wireless_rfkill, !state);
1575                 }
1576         }
1577
1578         if (has_cap(ACER_CAP_BLUETOOTH)) {
1579                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1580                 if (ACPI_SUCCESS(status))
1581                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1582         }
1583
1584         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1585                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1586                 if (ACPI_SUCCESS(status))
1587                         rfkill_set_sw_state(threeg_rfkill, !state);
1588         }
1589
1590         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1591 }
1592
1593 static int acer_rfkill_set(void *data, bool blocked)
1594 {
1595         acpi_status status;
1596         u32 cap = (unsigned long)data;
1597
1598         if (rfkill_inited) {
1599                 status = set_u32(!blocked, cap);
1600                 if (ACPI_FAILURE(status))
1601                         return -ENODEV;
1602         }
1603
1604         return 0;
1605 }
1606
1607 static const struct rfkill_ops acer_rfkill_ops = {
1608         .set_block = acer_rfkill_set,
1609 };
1610
1611 static struct rfkill *acer_rfkill_register(struct device *dev,
1612                                            enum rfkill_type type,
1613                                            char *name, u32 cap)
1614 {
1615         int err;
1616         struct rfkill *rfkill_dev;
1617         u32 state;
1618         acpi_status status;
1619
1620         rfkill_dev = rfkill_alloc(name, dev, type,
1621                                   &acer_rfkill_ops,
1622                                   (void *)(unsigned long)cap);
1623         if (!rfkill_dev)
1624                 return ERR_PTR(-ENOMEM);
1625
1626         status = get_u32(&state, cap);
1627
1628         err = rfkill_register(rfkill_dev);
1629         if (err) {
1630                 rfkill_destroy(rfkill_dev);
1631                 return ERR_PTR(err);
1632         }
1633
1634         if (ACPI_SUCCESS(status))
1635                 rfkill_set_sw_state(rfkill_dev, !state);
1636
1637         return rfkill_dev;
1638 }
1639
1640 static int acer_rfkill_init(struct device *dev)
1641 {
1642         int err;
1643
1644         if (has_cap(ACER_CAP_WIRELESS)) {
1645                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1646                         "acer-wireless", ACER_CAP_WIRELESS);
1647                 if (IS_ERR(wireless_rfkill)) {
1648                         err = PTR_ERR(wireless_rfkill);
1649                         goto error_wireless;
1650                 }
1651         }
1652
1653         if (has_cap(ACER_CAP_BLUETOOTH)) {
1654                 bluetooth_rfkill = acer_rfkill_register(dev,
1655                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1656                         ACER_CAP_BLUETOOTH);
1657                 if (IS_ERR(bluetooth_rfkill)) {
1658                         err = PTR_ERR(bluetooth_rfkill);
1659                         goto error_bluetooth;
1660                 }
1661         }
1662
1663         if (has_cap(ACER_CAP_THREEG)) {
1664                 threeg_rfkill = acer_rfkill_register(dev,
1665                         RFKILL_TYPE_WWAN, "acer-threeg",
1666                         ACER_CAP_THREEG);
1667                 if (IS_ERR(threeg_rfkill)) {
1668                         err = PTR_ERR(threeg_rfkill);
1669                         goto error_threeg;
1670                 }
1671         }
1672
1673         rfkill_inited = true;
1674
1675         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1676             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1677                 schedule_delayed_work(&acer_rfkill_work,
1678                         round_jiffies_relative(HZ));
1679
1680         return 0;
1681
1682 error_threeg:
1683         if (has_cap(ACER_CAP_BLUETOOTH)) {
1684                 rfkill_unregister(bluetooth_rfkill);
1685                 rfkill_destroy(bluetooth_rfkill);
1686         }
1687 error_bluetooth:
1688         if (has_cap(ACER_CAP_WIRELESS)) {
1689                 rfkill_unregister(wireless_rfkill);
1690                 rfkill_destroy(wireless_rfkill);
1691         }
1692 error_wireless:
1693         return err;
1694 }
1695
1696 static void acer_rfkill_exit(void)
1697 {
1698         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1699             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1700                 cancel_delayed_work_sync(&acer_rfkill_work);
1701
1702         if (has_cap(ACER_CAP_WIRELESS)) {
1703                 rfkill_unregister(wireless_rfkill);
1704                 rfkill_destroy(wireless_rfkill);
1705         }
1706
1707         if (has_cap(ACER_CAP_BLUETOOTH)) {
1708                 rfkill_unregister(bluetooth_rfkill);
1709                 rfkill_destroy(bluetooth_rfkill);
1710         }
1711
1712         if (has_cap(ACER_CAP_THREEG)) {
1713                 rfkill_unregister(threeg_rfkill);
1714                 rfkill_destroy(threeg_rfkill);
1715         }
1716         return;
1717 }
1718
1719 static void acer_wmi_notify(u32 value, void *context)
1720 {
1721         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1722         union acpi_object *obj;
1723         struct event_return_value return_value;
1724         acpi_status status;
1725         u16 device_state;
1726         const struct key_entry *key;
1727         u32 scancode;
1728
1729         status = wmi_get_event_data(value, &response);
1730         if (status != AE_OK) {
1731                 pr_warn("bad event status 0x%x\n", status);
1732                 return;
1733         }
1734
1735         obj = (union acpi_object *)response.pointer;
1736
1737         if (!obj)
1738                 return;
1739         if (obj->type != ACPI_TYPE_BUFFER) {
1740                 pr_warn("Unknown response received %d\n", obj->type);
1741                 kfree(obj);
1742                 return;
1743         }
1744         if (obj->buffer.length != 8) {
1745                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1746                 kfree(obj);
1747                 return;
1748         }
1749
1750         return_value = *((struct event_return_value *)obj->buffer.pointer);
1751         kfree(obj);
1752
1753         switch (return_value.function) {
1754         case WMID_HOTKEY_EVENT:
1755                 device_state = return_value.device_state;
1756                 pr_debug("device state: 0x%x\n", device_state);
1757
1758                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1759                                                         return_value.key_num);
1760                 if (!key) {
1761                         pr_warn("Unknown key number - 0x%x\n",
1762                                 return_value.key_num);
1763                 } else {
1764                         scancode = return_value.key_num;
1765                         switch (key->keycode) {
1766                         case KEY_WLAN:
1767                         case KEY_BLUETOOTH:
1768                                 if (has_cap(ACER_CAP_WIRELESS))
1769                                         rfkill_set_sw_state(wireless_rfkill,
1770                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1771                                 if (has_cap(ACER_CAP_THREEG))
1772                                         rfkill_set_sw_state(threeg_rfkill,
1773                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1774                                 if (has_cap(ACER_CAP_BLUETOOTH))
1775                                         rfkill_set_sw_state(bluetooth_rfkill,
1776                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1777                                 break;
1778                         case KEY_TOUCHPAD_TOGGLE:
1779                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1780                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1781                         }
1782                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1783                 }
1784                 break;
1785         case WMID_ACCEL_EVENT:
1786                 acer_gsensor_event();
1787                 break;
1788         default:
1789                 pr_warn("Unknown function number - %d - %d\n",
1790                         return_value.function, return_value.key_num);
1791                 break;
1792         }
1793 }
1794
1795 static acpi_status __init
1796 wmid3_set_function_mode(struct func_input_params *params,
1797                         struct func_return_value *return_value)
1798 {
1799         acpi_status status;
1800         union acpi_object *obj;
1801
1802         struct acpi_buffer input = { sizeof(struct func_input_params), params };
1803         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1804
1805         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1806         if (ACPI_FAILURE(status))
1807                 return status;
1808
1809         obj = output.pointer;
1810
1811         if (!obj)
1812                 return AE_ERROR;
1813         else if (obj->type != ACPI_TYPE_BUFFER) {
1814                 kfree(obj);
1815                 return AE_ERROR;
1816         }
1817         if (obj->buffer.length != 4) {
1818                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1819                 kfree(obj);
1820                 return AE_ERROR;
1821         }
1822
1823         *return_value = *((struct func_return_value *)obj->buffer.pointer);
1824         kfree(obj);
1825
1826         return status;
1827 }
1828
1829 static int __init acer_wmi_enable_ec_raw(void)
1830 {
1831         struct func_return_value return_value;
1832         acpi_status status;
1833         struct func_input_params params = {
1834                 .function_num = 0x1,
1835                 .commun_devices = 0xFFFF,
1836                 .devices = 0xFFFF,
1837                 .app_status = 0x00,             /* Launch Manager Deactive */
1838                 .app_mask = 0x01,
1839         };
1840
1841         status = wmid3_set_function_mode(&params, &return_value);
1842
1843         if (return_value.error_code || return_value.ec_return_value)
1844                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1845                         return_value.error_code,
1846                         return_value.ec_return_value);
1847         else
1848                 pr_info("Enabled EC raw mode\n");
1849
1850         return status;
1851 }
1852
1853 static int __init acer_wmi_enable_lm(void)
1854 {
1855         struct func_return_value return_value;
1856         acpi_status status;
1857         struct func_input_params params = {
1858                 .function_num = 0x1,
1859                 .commun_devices = 0xFFFF,
1860                 .devices = 0xFFFF,
1861                 .app_status = 0x01,            /* Launch Manager Active */
1862                 .app_mask = 0x01,
1863         };
1864
1865         status = wmid3_set_function_mode(&params, &return_value);
1866
1867         if (return_value.error_code || return_value.ec_return_value)
1868                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1869                         return_value.error_code,
1870                         return_value.ec_return_value);
1871
1872         return status;
1873 }
1874
1875 static int __init acer_wmi_enable_rf_button(void)
1876 {
1877         struct func_return_value return_value;
1878         acpi_status status;
1879         struct func_input_params params = {
1880                 .function_num = 0x1,
1881                 .commun_devices = 0xFFFF,
1882                 .devices = 0xFFFF,
1883                 .app_status = 0x10,            /* RF Button Active */
1884                 .app_mask = 0x10,
1885         };
1886
1887         status = wmid3_set_function_mode(&params, &return_value);
1888
1889         if (return_value.error_code || return_value.ec_return_value)
1890                 pr_warn("Enabling RF Button failed: 0x%x - 0x%x\n",
1891                         return_value.error_code,
1892                         return_value.ec_return_value);
1893
1894         return status;
1895 }
1896
1897 #define ACER_WMID_ACCEL_HID     "BST0001"
1898
1899 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1900                                                 void *ctx, void **retval)
1901 {
1902         struct acpi_device *dev;
1903
1904         if (!strcmp(ctx, "SENR")) {
1905                 if (acpi_bus_get_device(ah, &dev))
1906                         return AE_OK;
1907                 if (strcmp(ACER_WMID_ACCEL_HID, acpi_device_hid(dev)))
1908                         return AE_OK;
1909         } else
1910                 return AE_OK;
1911
1912         *(acpi_handle *)retval = ah;
1913
1914         return AE_CTRL_TERMINATE;
1915 }
1916
1917 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1918                                         acpi_handle *ah)
1919 {
1920         acpi_status status;
1921         acpi_handle handle;
1922
1923         BUG_ON(!name || !ah);
1924
1925         handle = NULL;
1926         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1927                                         (void *)name, &handle);
1928         if (ACPI_SUCCESS(status) && handle) {
1929                 *ah = handle;
1930                 return 0;
1931         } else {
1932                 return -ENODEV;
1933         }
1934 }
1935
1936 static int __init acer_wmi_accel_setup(void)
1937 {
1938         int err;
1939
1940         err = acer_wmi_get_handle("SENR", ACER_WMID_ACCEL_HID, &gsensor_handle);
1941         if (err)
1942                 return err;
1943
1944         interface->capability |= ACER_CAP_ACCEL;
1945
1946         acer_wmi_accel_dev = input_allocate_device();
1947         if (!acer_wmi_accel_dev)
1948                 return -ENOMEM;
1949
1950         acer_wmi_accel_dev->open = acer_gsensor_open;
1951
1952         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1953         acer_wmi_accel_dev->phys = "wmi/input1";
1954         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1955         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1956         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1957         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1958         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1959
1960         err = input_register_device(acer_wmi_accel_dev);
1961         if (err)
1962                 goto err_free_dev;
1963
1964         return 0;
1965
1966 err_free_dev:
1967         input_free_device(acer_wmi_accel_dev);
1968         return err;
1969 }
1970
1971 static void acer_wmi_accel_destroy(void)
1972 {
1973         input_unregister_device(acer_wmi_accel_dev);
1974 }
1975
1976 static int __init acer_wmi_input_setup(void)
1977 {
1978         acpi_status status;
1979         int err;
1980
1981         acer_wmi_input_dev = input_allocate_device();
1982         if (!acer_wmi_input_dev)
1983                 return -ENOMEM;
1984
1985         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1986         acer_wmi_input_dev->phys = "wmi/input0";
1987         acer_wmi_input_dev->id.bustype = BUS_HOST;
1988
1989         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1990         if (err)
1991                 goto err_free_dev;
1992
1993         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1994                                                 acer_wmi_notify, NULL);
1995         if (ACPI_FAILURE(status)) {
1996                 err = -EIO;
1997                 goto err_free_dev;
1998         }
1999
2000         err = input_register_device(acer_wmi_input_dev);
2001         if (err)
2002                 goto err_uninstall_notifier;
2003
2004         return 0;
2005
2006 err_uninstall_notifier:
2007         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
2008 err_free_dev:
2009         input_free_device(acer_wmi_input_dev);
2010         return err;
2011 }
2012
2013 static void acer_wmi_input_destroy(void)
2014 {
2015         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
2016         input_unregister_device(acer_wmi_input_dev);
2017 }
2018
2019 /*
2020  * debugfs functions
2021  */
2022 static u32 get_wmid_devices(void)
2023 {
2024         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
2025         union acpi_object *obj;
2026         acpi_status status;
2027         u32 devices = 0;
2028
2029         status = wmi_query_block(WMID_GUID2, 0, &out);
2030         if (ACPI_FAILURE(status))
2031                 return 0;
2032
2033         obj = (union acpi_object *) out.pointer;
2034         if (obj) {
2035                 if (obj->type == ACPI_TYPE_BUFFER &&
2036                         (obj->buffer.length == sizeof(u32) ||
2037                         obj->buffer.length == sizeof(u64))) {
2038                         devices = *((u32 *) obj->buffer.pointer);
2039                 } else if (obj->type == ACPI_TYPE_INTEGER) {
2040                         devices = (u32) obj->integer.value;
2041                 }
2042         }
2043
2044         kfree(out.pointer);
2045         return devices;
2046 }
2047
2048 /*
2049  * Platform device
2050  */
2051 static int acer_platform_probe(struct platform_device *device)
2052 {
2053         int err;
2054
2055         if (has_cap(ACER_CAP_MAILLED)) {
2056                 err = acer_led_init(&device->dev);
2057                 if (err)
2058                         goto error_mailled;
2059         }
2060
2061         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2062                 err = acer_backlight_init(&device->dev);
2063                 if (err)
2064                         goto error_brightness;
2065         }
2066
2067         err = acer_rfkill_init(&device->dev);
2068         if (err)
2069                 goto error_rfkill;
2070
2071         return err;
2072
2073 error_rfkill:
2074         if (has_cap(ACER_CAP_BRIGHTNESS))
2075                 acer_backlight_exit();
2076 error_brightness:
2077         if (has_cap(ACER_CAP_MAILLED))
2078                 acer_led_exit();
2079 error_mailled:
2080         return err;
2081 }
2082
2083 static int acer_platform_remove(struct platform_device *device)
2084 {
2085         if (has_cap(ACER_CAP_MAILLED))
2086                 acer_led_exit();
2087         if (has_cap(ACER_CAP_BRIGHTNESS))
2088                 acer_backlight_exit();
2089
2090         acer_rfkill_exit();
2091         return 0;
2092 }
2093
2094 #ifdef CONFIG_PM_SLEEP
2095 static int acer_suspend(struct device *dev)
2096 {
2097         u32 value;
2098         struct acer_data *data = &interface->data;
2099
2100         if (!data)
2101                 return -ENOMEM;
2102
2103         if (has_cap(ACER_CAP_MAILLED)) {
2104                 get_u32(&value, ACER_CAP_MAILLED);
2105                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2106                 data->mailled = value;
2107         }
2108
2109         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2110                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2111                 data->brightness = value;
2112         }
2113
2114         return 0;
2115 }
2116
2117 static int acer_resume(struct device *dev)
2118 {
2119         struct acer_data *data = &interface->data;
2120
2121         if (!data)
2122                 return -ENOMEM;
2123
2124         if (has_cap(ACER_CAP_MAILLED))
2125                 set_u32(data->mailled, ACER_CAP_MAILLED);
2126
2127         if (has_cap(ACER_CAP_BRIGHTNESS))
2128                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2129
2130         if (has_cap(ACER_CAP_ACCEL))
2131                 acer_gsensor_init();
2132
2133         return 0;
2134 }
2135 #else
2136 #define acer_suspend    NULL
2137 #define acer_resume     NULL
2138 #endif
2139
2140 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2141
2142 static void acer_platform_shutdown(struct platform_device *device)
2143 {
2144         struct acer_data *data = &interface->data;
2145
2146         if (!data)
2147                 return;
2148
2149         if (has_cap(ACER_CAP_MAILLED))
2150                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2151 }
2152
2153 static struct platform_driver acer_platform_driver = {
2154         .driver = {
2155                 .name = "acer-wmi",
2156                 .pm = &acer_pm,
2157         },
2158         .probe = acer_platform_probe,
2159         .remove = acer_platform_remove,
2160         .shutdown = acer_platform_shutdown,
2161 };
2162
2163 static struct platform_device *acer_platform_device;
2164
2165 static void remove_debugfs(void)
2166 {
2167         debugfs_remove(interface->debug.devices);
2168         debugfs_remove(interface->debug.root);
2169 }
2170
2171 static int __init create_debugfs(void)
2172 {
2173         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2174         if (!interface->debug.root) {
2175                 pr_err("Failed to create debugfs directory");
2176                 return -ENOMEM;
2177         }
2178
2179         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2180                                         interface->debug.root,
2181                                         &interface->debug.wmid_devices);
2182         if (!interface->debug.devices)
2183                 goto error_debugfs;
2184
2185         return 0;
2186
2187 error_debugfs:
2188         remove_debugfs();
2189         return -ENOMEM;
2190 }
2191
2192 static int __init acer_wmi_init(void)
2193 {
2194         int err;
2195
2196         pr_info("Acer Laptop ACPI-WMI Extras\n");
2197
2198         if (dmi_check_system(acer_blacklist)) {
2199                 pr_info("Blacklisted hardware detected - not loading\n");
2200                 return -ENODEV;
2201         }
2202
2203         find_quirks();
2204
2205         /*
2206          * The AMW0_GUID1 wmi is not only found on Acer family but also other
2207          * machines like Lenovo, Fujitsu and Medion. In the past days,
2208          * acer-wmi driver handled those non-Acer machines by quirks list.
2209          * But actually acer-wmi driver was loaded on any machines that have
2210          * AMW0_GUID1. This behavior is strange because those machines should
2211          * be supported by appropriate wmi drivers. e.g. fujitsu-laptop,
2212          * ideapad-laptop. So, here checks the machine that has AMW0_GUID1
2213          * should be in Acer/Gateway/Packard Bell white list, or it's already
2214          * in the past quirk list.
2215          */
2216         if (wmi_has_guid(AMW0_GUID1) &&
2217             !dmi_check_system(amw0_whitelist) &&
2218             quirks == &quirk_unknown) {
2219                 pr_err("Unsupported machine has AMW0_GUID1, unable to load\n");
2220                 return -ENODEV;
2221         }
2222
2223         /*
2224          * Detect which ACPI-WMI interface we're using.
2225          */
2226         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2227                 interface = &AMW0_V2_interface;
2228
2229         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2230                 interface = &wmid_interface;
2231
2232         if (wmi_has_guid(WMID_GUID3))
2233                 interface = &wmid_v2_interface;
2234
2235         if (interface)
2236                 dmi_walk(type_aa_dmi_decode, NULL);
2237
2238         if (wmi_has_guid(WMID_GUID2) && interface) {
2239                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2240                         pr_err("Unable to detect available WMID devices\n");
2241                         return -ENODEV;
2242                 }
2243                 /* WMID always provides brightness methods */
2244                 interface->capability |= ACER_CAP_BRIGHTNESS;
2245         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2246                 pr_err("No WMID device detection method found\n");
2247                 return -ENODEV;
2248         }
2249
2250         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2251                 interface = &AMW0_interface;
2252
2253                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2254                         pr_err("Unable to detect available AMW0 devices\n");
2255                         return -ENODEV;
2256                 }
2257         }
2258
2259         if (wmi_has_guid(AMW0_GUID1))
2260                 AMW0_find_mailled();
2261
2262         if (!interface) {
2263                 pr_err("No or unsupported WMI interface, unable to load\n");
2264                 return -ENODEV;
2265         }
2266
2267         set_quirks();
2268
2269         if (dmi_check_system(video_vendor_dmi_table))
2270                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2271
2272         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2273                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2274
2275         if (wmi_has_guid(WMID_GUID3)) {
2276                 if (ACPI_FAILURE(acer_wmi_enable_rf_button()))
2277                         pr_warn("Cannot enable RF Button Driver\n");
2278
2279                 if (ec_raw_mode) {
2280                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2281                                 pr_err("Cannot enable EC raw mode\n");
2282                                 return -ENODEV;
2283                         }
2284                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2285                         pr_err("Cannot enable Launch Manager mode\n");
2286                         return -ENODEV;
2287                 }
2288         } else if (ec_raw_mode) {
2289                 pr_info("No WMID EC raw mode enable method\n");
2290         }
2291
2292         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2293                 err = acer_wmi_input_setup();
2294                 if (err)
2295                         return err;
2296                 err = acer_wmi_accel_setup();
2297                 if (err && err != -ENODEV)
2298                         pr_warn("Cannot enable accelerometer\n");
2299         }
2300
2301         err = platform_driver_register(&acer_platform_driver);
2302         if (err) {
2303                 pr_err("Unable to register platform driver\n");
2304                 goto error_platform_register;
2305         }
2306
2307         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2308         if (!acer_platform_device) {
2309                 err = -ENOMEM;
2310                 goto error_device_alloc;
2311         }
2312
2313         err = platform_device_add(acer_platform_device);
2314         if (err)
2315                 goto error_device_add;
2316
2317         if (wmi_has_guid(WMID_GUID2)) {
2318                 interface->debug.wmid_devices = get_wmid_devices();
2319                 err = create_debugfs();
2320                 if (err)
2321                         goto error_create_debugfs;
2322         }
2323
2324         /* Override any initial settings with values from the commandline */
2325         acer_commandline_init();
2326
2327         return 0;
2328
2329 error_create_debugfs:
2330         platform_device_del(acer_platform_device);
2331 error_device_add:
2332         platform_device_put(acer_platform_device);
2333 error_device_alloc:
2334         platform_driver_unregister(&acer_platform_driver);
2335 error_platform_register:
2336         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2337                 acer_wmi_input_destroy();
2338         if (has_cap(ACER_CAP_ACCEL))
2339                 acer_wmi_accel_destroy();
2340
2341         return err;
2342 }
2343
2344 static void __exit acer_wmi_exit(void)
2345 {
2346         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2347                 acer_wmi_input_destroy();
2348
2349         if (has_cap(ACER_CAP_ACCEL))
2350                 acer_wmi_accel_destroy();
2351
2352         remove_debugfs();
2353         platform_device_unregister(acer_platform_device);
2354         platform_driver_unregister(&acer_platform_driver);
2355
2356         pr_info("Acer Laptop WMI Extras unloaded\n");
2357         return;
2358 }
2359
2360 module_init(acer_wmi_init);
2361 module_exit(acer_wmi_exit);