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_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         return interface->capability & cap;
 676 }
 677
 678 /*
 679  * AMW0 (V1) interface
 680  */
 681 struct wmab_args {
 682         u32 eax;
 683         u32 ebx;
 684         u32 ecx;
 685         u32 edx;
 686 };
 687
 688 struct wmab_ret {
 689         u32 eax;
 690         u32 ebx;
 691         u32 ecx;
 692         u32 edx;
 693         u32 eex;
 694 };
 695
 696 static acpi_status wmab_execute(struct wmab_args *regbuf,
 697 struct acpi_buffer *result)
 698 {
 699         struct acpi_buffer input;
 700         acpi_status status;
 701         input.length = sizeof(struct wmab_args);
 702         input.pointer = (u8 *)regbuf;
 703
 704         status = wmi_evaluate_method(AMW0_GUID1, 0, 1, &input, result);
 705
 706         return status;
 707 }
 708
 709 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 710 {
 711         int err;
 712         u8 result;
 713
 714         switch (cap) {
 715         case ACER_CAP_MAILLED:
 716                 switch (quirks->mailled) {
 717                 default:
 718                         err = ec_read(0xA, &result);
 719                         if (err)
 720                                 return AE_ERROR;
 721                         *value = (result >> 7) & 0x1;
 722                         return AE_OK;
 723                 }
 724                 break;
 725         case ACER_CAP_WIRELESS:
 726                 switch (quirks->wireless) {
 727                 case 1:
 728                         err = ec_read(0x7B, &result);
 729                         if (err)
 730                                 return AE_ERROR;
 731                         *value = result & 0x1;
 732                         return AE_OK;
 733                 case 2:
 734                         err = ec_read(0x71, &result);
 735                         if (err)
 736                                 return AE_ERROR;
 737                         *value = result & 0x1;
 738                         return AE_OK;
 739                 case 3:
 740                         err = ec_read(0x78, &result);
 741                         if (err)
 742                                 return AE_ERROR;
 743                         *value = result & 0x1;
 744                         return AE_OK;
 745                 default:
 746                         err = ec_read(0xA, &result);
 747                         if (err)
 748                                 return AE_ERROR;
 749                         *value = (result >> 2) & 0x1;
 750                         return AE_OK;
 751                 }
 752                 break;
 753         case ACER_CAP_BLUETOOTH:
 754                 switch (quirks->bluetooth) {
 755                 default:
 756                         err = ec_read(0xA, &result);
 757                         if (err)
 758                                 return AE_ERROR;
 759                         *value = (result >> 4) & 0x1;
 760                         return AE_OK;
 761                 }
 762                 break;
 763         case ACER_CAP_BRIGHTNESS:
 764                 switch (quirks->brightness) {
 765                 default:
 766                         err = ec_read(0x83, &result);
 767                         if (err)
 768                                 return AE_ERROR;
 769                         *value = result;
 770                         return AE_OK;
 771                 }
 772                 break;
 773         default:
 774                 return AE_ERROR;
 775         }
 776         return AE_OK;
 777 }
 778
 779 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 780 {
 781         struct wmab_args args;
 782
 783         args.eax = ACER_AMW0_WRITE;
 784         args.ebx = value ? (1<<8) : 0;
 785         args.ecx = args.edx = 0;
 786
 787         switch (cap) {
 788         case ACER_CAP_MAILLED:
 789                 if (value > 1)
 790                         return AE_BAD_PARAMETER;
 791                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 792                 break;
 793         case ACER_CAP_WIRELESS:
 794                 if (value > 1)
 795                         return AE_BAD_PARAMETER;
 796                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 797                 break;
 798         case ACER_CAP_BLUETOOTH:
 799                 if (value > 1)
 800                         return AE_BAD_PARAMETER;
 801                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 802                 break;
 803         case ACER_CAP_BRIGHTNESS:
 804                 if (value > max_brightness)
 805                         return AE_BAD_PARAMETER;
 806                 switch (quirks->brightness) {
 807                 default:
 808                         return ec_write(0x83, value);
 809                         break;
 810                 }
 811         default:
 812                 return AE_ERROR;
 813         }
 814
 815         /* Actually do the set */
 816         return wmab_execute(&args, NULL);
 817 }
 818
 819 static acpi_status __init AMW0_find_mailled(void)
 820 {
 821         struct wmab_args args;
 822         struct wmab_ret ret;
 823         acpi_status status = AE_OK;
 824         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 825         union acpi_object *obj;
 826
 827         args.eax = 0x86;
 828         args.ebx = args.ecx = args.edx = 0;
 829
 830         status = wmab_execute(&args, &out);
 831         if (ACPI_FAILURE(status))
 832                 return status;
 833
 834         obj = (union acpi_object *) out.pointer;
 835         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 836         obj->buffer.length == sizeof(struct wmab_ret)) {
 837                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 838         } else {
 839                 kfree(out.pointer);
 840                 return AE_ERROR;
 841         }
 842
 843         if (ret.eex & 0x1)
 844                 interface->capability |= ACER_CAP_MAILLED;
 845
 846         kfree(out.pointer);
 847
 848         return AE_OK;
 849 }
 850
 851 static const struct acpi_device_id norfkill_ids[] __initconst = {
 852         { "VPC2004", 0},
 853         { "IBM0068", 0},
 854         { "LEN0068", 0},
 855         { "SNY5001", 0},        /* sony-laptop in charge */
 856         { "HPQ6601", 0},
 857         { "", 0},
 858 };
 859
 860 static int __init AMW0_set_cap_acpi_check_device(void)
 861 {
 862         const struct acpi_device_id *id;
 863
 864         for (id = norfkill_ids; id->id[0]; id++)
 865                 if (acpi_dev_found(id->id))
 866                         return true;
 867
 868         return false;
 869 }
 870
 871 static acpi_status __init AMW0_set_capabilities(void)
 872 {
 873         struct wmab_args args;
 874         struct wmab_ret ret;
 875         acpi_status status;
 876         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 877         union acpi_object *obj;
 878
 879         /*
 880          * On laptops with this strange GUID (non Acer), normal probing doesn't
 881          * work.
 882          */
 883         if (wmi_has_guid(AMW0_GUID2)) {
 884                 if ((quirks != &quirk_unknown) ||
 885                     !AMW0_set_cap_acpi_check_device())
 886                         interface->capability |= ACER_CAP_WIRELESS;
 887                 return AE_OK;
 888         }
 889
 890         args.eax = ACER_AMW0_WRITE;
 891         args.ecx = args.edx = 0;
 892
 893         args.ebx = 0xa2 << 8;
 894         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 895
 896         status = wmab_execute(&args, &out);
 897         if (ACPI_FAILURE(status))
 898                 return status;
 899
 900         obj = out.pointer;
 901         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 902         obj->buffer.length == sizeof(struct wmab_ret)) {
 903                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 904         } else {
 905                 status = AE_ERROR;
 906                 goto out;
 907         }
 908
 909         if (ret.eax & 0x1)
 910                 interface->capability |= ACER_CAP_WIRELESS;
 911
 912         args.ebx = 2 << 8;
 913         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 914
 915         /*
 916          * It's ok to use existing buffer for next wmab_execute call.
 917          * But we need to kfree(out.pointer) if next wmab_execute fail.
 918          */
 919         status = wmab_execute(&args, &out);
 920         if (ACPI_FAILURE(status))
 921                 goto out;
 922
 923         obj = (union acpi_object *) out.pointer;
 924         if (obj && obj->type == ACPI_TYPE_BUFFER
 925         && obj->buffer.length == sizeof(struct wmab_ret)) {
 926                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 927         } else {
 928                 status = AE_ERROR;
 929                 goto out;
 930         }
 931
 932         if (ret.eax & 0x1)
 933                 interface->capability |= ACER_CAP_BLUETOOTH;
 934
 935         /*
 936          * This appears to be safe to enable, since all Wistron based laptops
 937          * appear to use the same EC register for brightness, even if they
 938          * differ for wireless, etc
 939          */
 940         if (quirks->brightness >= 0)
 941                 interface->capability |= ACER_CAP_BRIGHTNESS;
 942
 943         status = AE_OK;
 944 out:
 945         kfree(out.pointer);
 946         return status;
 947 }
 948
 949 static struct wmi_interface AMW0_interface = {
 950         .type = ACER_AMW0,
 951 };
 952
 953 static struct wmi_interface AMW0_V2_interface = {
 954         .type = ACER_AMW0_V2,
 955 };
 956
 957 /*
 958  * New interface (The WMID interface)
 959  */
 960 static acpi_status
 961 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 962 {
 963         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 964         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 965         union acpi_object *obj;
 966         u32 tmp = 0;
 967         acpi_status status;
 968
 969         status = wmi_evaluate_method(WMID_GUID1, 0, method_id, &input, &result);
 970
 971         if (ACPI_FAILURE(status))
 972                 return status;
 973
 974         obj = (union acpi_object *) result.pointer;
 975         if (obj) {
 976                 if (obj->type == ACPI_TYPE_BUFFER &&
 977                         (obj->buffer.length == sizeof(u32) ||
 978                         obj->buffer.length == sizeof(u64))) {
 979                         tmp = *((u32 *) obj->buffer.pointer);
 980                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 981                         tmp = (u32) obj->integer.value;
 982                 }
 983         }
 984
 985         if (out)
 986                 *out = tmp;
 987
 988         kfree(result.pointer);
 989
 990         return status;
 991 }
 992
 993 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 994 {
 995         acpi_status status;
 996         u8 tmp;
 997         u32 result, method_id = 0;
 998
 999         switch (cap) {
1000         case ACER_CAP_WIRELESS:
1001                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
1002                 break;
1003         case ACER_CAP_BLUETOOTH:
1004                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
1005                 break;
1006         case ACER_CAP_BRIGHTNESS:
1007                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
1008                 break;
1009         case ACER_CAP_THREEG:
1010                 method_id = ACER_WMID_GET_THREEG_METHODID;
1011                 break;
1012         case ACER_CAP_MAILLED:
1013                 if (quirks->mailled == 1) {
1014                         ec_read(0x9f, &tmp);
1015                         *value = tmp & 0x1;
1016                         return 0;
1017                 }
1018         default:
1019                 return AE_ERROR;
1020         }
1021         status = WMI_execute_u32(method_id, 0, &result);
1022
1023         if (ACPI_SUCCESS(status))
1024                 *value = (u8)result;
1025
1026         return status;
1027 }
1028
1029 static acpi_status WMID_set_u32(u32 value, u32 cap)
1030 {
1031         u32 method_id = 0;
1032         char param;
1033
1034         switch (cap) {
1035         case ACER_CAP_BRIGHTNESS:
1036                 if (value > max_brightness)
1037                         return AE_BAD_PARAMETER;
1038                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
1039                 break;
1040         case ACER_CAP_WIRELESS:
1041                 if (value > 1)
1042                         return AE_BAD_PARAMETER;
1043                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
1044                 break;
1045         case ACER_CAP_BLUETOOTH:
1046                 if (value > 1)
1047                         return AE_BAD_PARAMETER;
1048                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
1049                 break;
1050         case ACER_CAP_THREEG:
1051                 if (value > 1)
1052                         return AE_BAD_PARAMETER;
1053                 method_id = ACER_WMID_SET_THREEG_METHODID;
1054                 break;
1055         case ACER_CAP_MAILLED:
1056                 if (value > 1)
1057                         return AE_BAD_PARAMETER;
1058                 if (quirks->mailled == 1) {
1059                         param = value ? 0x92 : 0x93;
1060                         i8042_lock_chip();
1061                         i8042_command(&param, 0x1059);
1062                         i8042_unlock_chip();
1063                         return 0;
1064                 }
1065                 break;
1066         default:
1067                 return AE_ERROR;
1068         }
1069         return WMI_execute_u32(method_id, (u32)value, NULL);
1070 }
1071
1072 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1073 {
1074         struct wmid3_gds_return_value return_value;
1075         acpi_status status;
1076         union acpi_object *obj;
1077         struct wmid3_gds_get_input_param params = {
1078                 .function_num = 0x1,
1079                 .hotkey_number = commun_fn_key_number,
1080                 .devices = device,
1081         };
1082         struct acpi_buffer input = {
1083                 sizeof(struct wmid3_gds_get_input_param),
1084                 &params
1085         };
1086         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1087
1088         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1089         if (ACPI_FAILURE(status))
1090                 return status;
1091
1092         obj = output.pointer;
1093
1094         if (!obj)
1095                 return AE_ERROR;
1096         else if (obj->type != ACPI_TYPE_BUFFER) {
1097                 kfree(obj);
1098                 return AE_ERROR;
1099         }
1100         if (obj->buffer.length != 8) {
1101                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1102                 kfree(obj);
1103                 return AE_ERROR;
1104         }
1105
1106         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1107         kfree(obj);
1108
1109         if (return_value.error_code || return_value.ec_return_value)
1110                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1111                         device,
1112                         return_value.error_code,
1113                         return_value.ec_return_value);
1114         else
1115                 *value = !!(return_value.devices & device);
1116
1117         return status;
1118 }
1119
1120 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1121 {
1122         u16 device;
1123
1124         switch (cap) {
1125         case ACER_CAP_WIRELESS:
1126                 device = ACER_WMID3_GDS_WIRELESS;
1127                 break;
1128         case ACER_CAP_BLUETOOTH:
1129                 device = ACER_WMID3_GDS_BLUETOOTH;
1130                 break;
1131         case ACER_CAP_THREEG:
1132                 device = ACER_WMID3_GDS_THREEG;
1133                 break;
1134         default:
1135                 return AE_ERROR;
1136         }
1137         return wmid3_get_device_status(value, device);
1138 }
1139
1140 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1141 {
1142         struct wmid3_gds_return_value return_value;
1143         acpi_status status;
1144         union acpi_object *obj;
1145         u16 devices;
1146         struct wmid3_gds_get_input_param get_params = {
1147                 .function_num = 0x1,
1148                 .hotkey_number = commun_fn_key_number,
1149                 .devices = commun_func_bitmap,
1150         };
1151         struct acpi_buffer get_input = {
1152                 sizeof(struct wmid3_gds_get_input_param),
1153                 &get_params
1154         };
1155         struct wmid3_gds_set_input_param set_params = {
1156                 .function_num = 0x2,
1157                 .hotkey_number = commun_fn_key_number,
1158                 .devices = commun_func_bitmap,
1159         };
1160         struct acpi_buffer set_input = {
1161                 sizeof(struct wmid3_gds_set_input_param),
1162                 &set_params
1163         };
1164         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1165         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1166
1167         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1168         if (ACPI_FAILURE(status))
1169                 return status;
1170
1171         obj = output.pointer;
1172
1173         if (!obj)
1174                 return AE_ERROR;
1175         else if (obj->type != ACPI_TYPE_BUFFER) {
1176                 kfree(obj);
1177                 return AE_ERROR;
1178         }
1179         if (obj->buffer.length != 8) {
1180                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1181                 kfree(obj);
1182                 return AE_ERROR;
1183         }
1184
1185         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1186         kfree(obj);
1187
1188         if (return_value.error_code || return_value.ec_return_value) {
1189                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1190                         return_value.error_code,
1191                         return_value.ec_return_value);
1192                 return status;
1193         }
1194
1195         devices = return_value.devices;
1196         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1197
1198         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1199         if (ACPI_FAILURE(status))
1200                 return status;
1201
1202         obj = output2.pointer;
1203
1204         if (!obj)
1205                 return AE_ERROR;
1206         else if (obj->type != ACPI_TYPE_BUFFER) {
1207                 kfree(obj);
1208                 return AE_ERROR;
1209         }
1210         if (obj->buffer.length != 4) {
1211                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1212                 kfree(obj);
1213                 return AE_ERROR;
1214         }
1215
1216         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1217         kfree(obj);
1218
1219         if (return_value.error_code || return_value.ec_return_value)
1220                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1221                         return_value.error_code,
1222                         return_value.ec_return_value);
1223
1224         return status;
1225 }
1226
1227 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1228 {
1229         u16 device;
1230
1231         switch (cap) {
1232         case ACER_CAP_WIRELESS:
1233                 device = ACER_WMID3_GDS_WIRELESS;
1234                 break;
1235         case ACER_CAP_BLUETOOTH:
1236                 device = ACER_WMID3_GDS_BLUETOOTH;
1237                 break;
1238         case ACER_CAP_THREEG:
1239                 device = ACER_WMID3_GDS_THREEG;
1240                 break;
1241         default:
1242                 return AE_ERROR;
1243         }
1244         return wmid3_set_device_status(value, device);
1245 }
1246
1247 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1248 {
1249         struct hotkey_function_type_aa *type_aa;
1250
1251         /* We are looking for OEM-specific Type AAh */
1252         if (header->type != 0xAA)
1253                 return;
1254
1255         has_type_aa = true;
1256         type_aa = (struct hotkey_function_type_aa *) header;
1257
1258         pr_info("Function bitmap for Communication Button: 0x%x\n",
1259                 type_aa->commun_func_bitmap);
1260         commun_func_bitmap = type_aa->commun_func_bitmap;
1261
1262         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1263                 interface->capability |= ACER_CAP_WIRELESS;
1264         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1265                 interface->capability |= ACER_CAP_THREEG;
1266         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1267                 interface->capability |= ACER_CAP_BLUETOOTH;
1268         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_RFBTN) {
1269                 interface->capability |= ACER_CAP_RFBTN;
1270                 commun_func_bitmap &= ~ACER_WMID3_GDS_RFBTN;
1271         }
1272
1273         commun_fn_key_number = type_aa->commun_fn_key_number;
1274 }
1275
1276 static acpi_status __init WMID_set_capabilities(void)
1277 {
1278         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1279         union acpi_object *obj;
1280         acpi_status status;
1281         u32 devices;
1282
1283         status = wmi_query_block(WMID_GUID2, 0, &out);
1284         if (ACPI_FAILURE(status))
1285                 return status;
1286
1287         obj = (union acpi_object *) out.pointer;
1288         if (obj) {
1289                 if (obj->type == ACPI_TYPE_BUFFER &&
1290                         (obj->buffer.length == sizeof(u32) ||
1291                         obj->buffer.length == sizeof(u64))) {
1292                         devices = *((u32 *) obj->buffer.pointer);
1293                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1294                         devices = (u32) obj->integer.value;
1295                 } else {
1296                         kfree(out.pointer);
1297                         return AE_ERROR;
1298                 }
1299         } else {
1300                 kfree(out.pointer);
1301                 return AE_ERROR;
1302         }
1303
1304         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1305         if (devices & 0x07)
1306                 interface->capability |= ACER_CAP_WIRELESS;
1307         if (devices & 0x40)
1308                 interface->capability |= ACER_CAP_THREEG;
1309         if (devices & 0x10)
1310                 interface->capability |= ACER_CAP_BLUETOOTH;
1311
1312         if (!(devices & 0x20))
1313                 max_brightness = 0x9;
1314
1315         kfree(out.pointer);
1316         return status;
1317 }
1318
1319 static struct wmi_interface wmid_interface = {
1320         .type = ACER_WMID,
1321 };
1322
1323 static struct wmi_interface wmid_v2_interface = {
1324         .type = ACER_WMID_v2,
1325 };
1326
1327 /*
1328  * Generic Device (interface-independent)
1329  */
1330
1331 static acpi_status get_u32(u32 *value, u32 cap)
1332 {
1333         acpi_status status = AE_ERROR;
1334
1335         switch (interface->type) {
1336         case ACER_AMW0:
1337                 status = AMW0_get_u32(value, cap);
1338                 break;
1339         case ACER_AMW0_V2:
1340                 if (cap == ACER_CAP_MAILLED) {
1341                         status = AMW0_get_u32(value, cap);
1342                         break;
1343                 }
1344         case ACER_WMID:
1345                 status = WMID_get_u32(value, cap);
1346                 break;
1347         case ACER_WMID_v2:
1348                 if (cap & (ACER_CAP_WIRELESS |
1349                            ACER_CAP_BLUETOOTH |
1350                            ACER_CAP_THREEG))
1351                         status = wmid_v2_get_u32(value, cap);
1352                 else if (wmi_has_guid(WMID_GUID2))
1353                         status = WMID_get_u32(value, cap);
1354                 break;
1355         }
1356
1357         return status;
1358 }
1359
1360 static acpi_status set_u32(u32 value, u32 cap)
1361 {
1362         acpi_status status;
1363
1364         if (interface->capability & cap) {
1365                 switch (interface->type) {
1366                 case ACER_AMW0:
1367                         return AMW0_set_u32(value, cap);
1368                 case ACER_AMW0_V2:
1369                         if (cap == ACER_CAP_MAILLED)
1370                                 return AMW0_set_u32(value, cap);
1371
1372                         /*
1373                          * On some models, some WMID methods don't toggle
1374                          * properly. For those cases, we want to run the AMW0
1375                          * method afterwards to be certain we've really toggled
1376                          * the device state.
1377                          */
1378                         if (cap == ACER_CAP_WIRELESS ||
1379                                 cap == ACER_CAP_BLUETOOTH) {
1380                                 status = WMID_set_u32(value, cap);
1381                                 if (ACPI_FAILURE(status))
1382                                         return status;
1383
1384                                 return AMW0_set_u32(value, cap);
1385                         }
1386                 case ACER_WMID:
1387                         return WMID_set_u32(value, cap);
1388                 case ACER_WMID_v2:
1389                         if (cap & (ACER_CAP_WIRELESS |
1390                                    ACER_CAP_BLUETOOTH |
1391                                    ACER_CAP_THREEG))
1392                                 return wmid_v2_set_u32(value, cap);
1393                         else if (wmi_has_guid(WMID_GUID2))
1394                                 return WMID_set_u32(value, cap);
1395                 default:
1396                         return AE_BAD_PARAMETER;
1397                 }
1398         }
1399         return AE_BAD_PARAMETER;
1400 }
1401
1402 static void __init acer_commandline_init(void)
1403 {
1404         /*
1405          * These will all fail silently if the value given is invalid, or the
1406          * capability isn't available on the given interface
1407          */
1408         if (mailled >= 0)
1409                 set_u32(mailled, ACER_CAP_MAILLED);
1410         if (!has_type_aa && threeg >= 0)
1411                 set_u32(threeg, ACER_CAP_THREEG);
1412         if (brightness >= 0)
1413                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1414 }
1415
1416 /*
1417  * LED device (Mail LED only, no other LEDs known yet)
1418  */
1419 static void mail_led_set(struct led_classdev *led_cdev,
1420 enum led_brightness value)
1421 {
1422         set_u32(value, ACER_CAP_MAILLED);
1423 }
1424
1425 static struct led_classdev mail_led = {
1426         .name = "acer-wmi::mail",
1427         .brightness_set = mail_led_set,
1428 };
1429
1430 static int acer_led_init(struct device *dev)
1431 {
1432         return led_classdev_register(dev, &mail_led);
1433 }
1434
1435 static void acer_led_exit(void)
1436 {
1437         set_u32(LED_OFF, ACER_CAP_MAILLED);
1438         led_classdev_unregister(&mail_led);
1439 }
1440
1441 /*
1442  * Backlight device
1443  */
1444 static struct backlight_device *acer_backlight_device;
1445
1446 static int read_brightness(struct backlight_device *bd)
1447 {
1448         u32 value;
1449         get_u32(&value, ACER_CAP_BRIGHTNESS);
1450         return value;
1451 }
1452
1453 static int update_bl_status(struct backlight_device *bd)
1454 {
1455         int intensity = bd->props.brightness;
1456
1457         if (bd->props.power != FB_BLANK_UNBLANK)
1458                 intensity = 0;
1459         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1460                 intensity = 0;
1461
1462         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1463
1464         return 0;
1465 }
1466
1467 static const struct backlight_ops acer_bl_ops = {
1468         .get_brightness = read_brightness,
1469         .update_status = update_bl_status,
1470 };
1471
1472 static int acer_backlight_init(struct device *dev)
1473 {
1474         struct backlight_properties props;
1475         struct backlight_device *bd;
1476
1477         memset(&props, 0, sizeof(struct backlight_properties));
1478         props.type = BACKLIGHT_PLATFORM;
1479         props.max_brightness = max_brightness;
1480         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1481                                        &props);
1482         if (IS_ERR(bd)) {
1483                 pr_err("Could not register Acer backlight device\n");
1484                 acer_backlight_device = NULL;
1485                 return PTR_ERR(bd);
1486         }
1487
1488         acer_backlight_device = bd;
1489
1490         bd->props.power = FB_BLANK_UNBLANK;
1491         bd->props.brightness = read_brightness(bd);
1492         backlight_update_status(bd);
1493         return 0;
1494 }
1495
1496 static void acer_backlight_exit(void)
1497 {
1498         backlight_device_unregister(acer_backlight_device);
1499 }
1500
1501 /*
1502  * Accelerometer device
1503  */
1504 static acpi_handle gsensor_handle;
1505
1506 static int acer_gsensor_init(void)
1507 {
1508         acpi_status status;
1509         struct acpi_buffer output;
1510         union acpi_object out_obj;
1511
1512         output.length = sizeof(out_obj);
1513         output.pointer = &out_obj;
1514         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1515         if (ACPI_FAILURE(status))
1516                 return -1;
1517
1518         return 0;
1519 }
1520
1521 static int acer_gsensor_open(struct input_dev *input)
1522 {
1523         return acer_gsensor_init();
1524 }
1525
1526 static int acer_gsensor_event(void)
1527 {
1528         acpi_status status;
1529         struct acpi_buffer output;
1530         union acpi_object out_obj[5];
1531
1532         if (!has_cap(ACER_CAP_ACCEL))
1533                 return -1;
1534
1535         output.length = sizeof(out_obj);
1536         output.pointer = out_obj;
1537
1538         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1539         if (ACPI_FAILURE(status))
1540                 return -1;
1541
1542         if (out_obj->package.count != 4)
1543                 return -1;
1544
1545         input_report_abs(acer_wmi_accel_dev, ABS_X,
1546                 (s16)out_obj->package.elements[0].integer.value);
1547         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1548                 (s16)out_obj->package.elements[1].integer.value);
1549         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1550                 (s16)out_obj->package.elements[2].integer.value);
1551         input_sync(acer_wmi_accel_dev);
1552         return 0;
1553 }
1554
1555 /*
1556  * Rfkill devices
1557  */
1558 static void acer_rfkill_update(struct work_struct *ignored);
1559 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1560 static void acer_rfkill_update(struct work_struct *ignored)
1561 {
1562         u32 state;
1563         acpi_status status;
1564
1565         if (has_cap(ACER_CAP_WIRELESS)) {
1566                 status = get_u32(&state, ACER_CAP_WIRELESS);
1567                 if (ACPI_SUCCESS(status)) {
1568                         if (quirks->wireless == 3)
1569                                 rfkill_set_hw_state(wireless_rfkill, !state);
1570                         else
1571                                 rfkill_set_sw_state(wireless_rfkill, !state);
1572                 }
1573         }
1574
1575         if (has_cap(ACER_CAP_BLUETOOTH)) {
1576                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1577                 if (ACPI_SUCCESS(status))
1578                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1579         }
1580
1581         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1582                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1583                 if (ACPI_SUCCESS(status))
1584                         rfkill_set_sw_state(threeg_rfkill, !state);
1585         }
1586
1587         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1588 }
1589
1590 static int acer_rfkill_set(void *data, bool blocked)
1591 {
1592         acpi_status status;
1593         u32 cap = (unsigned long)data;
1594
1595         if (rfkill_inited) {
1596                 status = set_u32(!blocked, cap);
1597                 if (ACPI_FAILURE(status))
1598                         return -ENODEV;
1599         }
1600
1601         return 0;
1602 }
1603
1604 static const struct rfkill_ops acer_rfkill_ops = {
1605         .set_block = acer_rfkill_set,
1606 };
1607
1608 static struct rfkill *acer_rfkill_register(struct device *dev,
1609                                            enum rfkill_type type,
1610                                            char *name, u32 cap)
1611 {
1612         int err;
1613         struct rfkill *rfkill_dev;
1614         u32 state;
1615         acpi_status status;
1616
1617         rfkill_dev = rfkill_alloc(name, dev, type,
1618                                   &acer_rfkill_ops,
1619                                   (void *)(unsigned long)cap);
1620         if (!rfkill_dev)
1621                 return ERR_PTR(-ENOMEM);
1622
1623         status = get_u32(&state, cap);
1624
1625         err = rfkill_register(rfkill_dev);
1626         if (err) {
1627                 rfkill_destroy(rfkill_dev);
1628                 return ERR_PTR(err);
1629         }
1630
1631         if (ACPI_SUCCESS(status))
1632                 rfkill_set_sw_state(rfkill_dev, !state);
1633
1634         return rfkill_dev;
1635 }
1636
1637 static int acer_rfkill_init(struct device *dev)
1638 {
1639         int err;
1640
1641         if (has_cap(ACER_CAP_WIRELESS)) {
1642                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1643                         "acer-wireless", ACER_CAP_WIRELESS);
1644                 if (IS_ERR(wireless_rfkill)) {
1645                         err = PTR_ERR(wireless_rfkill);
1646                         goto error_wireless;
1647                 }
1648         }
1649
1650         if (has_cap(ACER_CAP_BLUETOOTH)) {
1651                 bluetooth_rfkill = acer_rfkill_register(dev,
1652                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1653                         ACER_CAP_BLUETOOTH);
1654                 if (IS_ERR(bluetooth_rfkill)) {
1655                         err = PTR_ERR(bluetooth_rfkill);
1656                         goto error_bluetooth;
1657                 }
1658         }
1659
1660         if (has_cap(ACER_CAP_THREEG)) {
1661                 threeg_rfkill = acer_rfkill_register(dev,
1662                         RFKILL_TYPE_WWAN, "acer-threeg",
1663                         ACER_CAP_THREEG);
1664                 if (IS_ERR(threeg_rfkill)) {
1665                         err = PTR_ERR(threeg_rfkill);
1666                         goto error_threeg;
1667                 }
1668         }
1669
1670         rfkill_inited = true;
1671
1672         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1673             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1674                 schedule_delayed_work(&acer_rfkill_work,
1675                         round_jiffies_relative(HZ));
1676
1677         return 0;
1678
1679 error_threeg:
1680         if (has_cap(ACER_CAP_BLUETOOTH)) {
1681                 rfkill_unregister(bluetooth_rfkill);
1682                 rfkill_destroy(bluetooth_rfkill);
1683         }
1684 error_bluetooth:
1685         if (has_cap(ACER_CAP_WIRELESS)) {
1686                 rfkill_unregister(wireless_rfkill);
1687                 rfkill_destroy(wireless_rfkill);
1688         }
1689 error_wireless:
1690         return err;
1691 }
1692
1693 static void acer_rfkill_exit(void)
1694 {
1695         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1696             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1697                 cancel_delayed_work_sync(&acer_rfkill_work);
1698
1699         if (has_cap(ACER_CAP_WIRELESS)) {
1700                 rfkill_unregister(wireless_rfkill);
1701                 rfkill_destroy(wireless_rfkill);
1702         }
1703
1704         if (has_cap(ACER_CAP_BLUETOOTH)) {
1705                 rfkill_unregister(bluetooth_rfkill);
1706                 rfkill_destroy(bluetooth_rfkill);
1707         }
1708
1709         if (has_cap(ACER_CAP_THREEG)) {
1710                 rfkill_unregister(threeg_rfkill);
1711                 rfkill_destroy(threeg_rfkill);
1712         }
1713         return;
1714 }
1715
1716 static void acer_wmi_notify(u32 value, void *context)
1717 {
1718         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1719         union acpi_object *obj;
1720         struct event_return_value return_value;
1721         acpi_status status;
1722         u16 device_state;
1723         const struct key_entry *key;
1724         u32 scancode;
1725
1726         status = wmi_get_event_data(value, &response);
1727         if (status != AE_OK) {
1728                 pr_warn("bad event status 0x%x\n", status);
1729                 return;
1730         }
1731
1732         obj = (union acpi_object *)response.pointer;
1733
1734         if (!obj)
1735                 return;
1736         if (obj->type != ACPI_TYPE_BUFFER) {
1737                 pr_warn("Unknown response received %d\n", obj->type);
1738                 kfree(obj);
1739                 return;
1740         }
1741         if (obj->buffer.length != 8) {
1742                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1743                 kfree(obj);
1744                 return;
1745         }
1746
1747         return_value = *((struct event_return_value *)obj->buffer.pointer);
1748         kfree(obj);
1749
1750         switch (return_value.function) {
1751         case WMID_HOTKEY_EVENT:
1752                 device_state = return_value.device_state;
1753                 pr_debug("device state: 0x%x\n", device_state);
1754
1755                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1756                                                         return_value.key_num);
1757                 if (!key) {
1758                         pr_warn("Unknown key number - 0x%x\n",
1759                                 return_value.key_num);
1760                 } else {
1761                         scancode = return_value.key_num;
1762                         switch (key->keycode) {
1763                         case KEY_WLAN:
1764                         case KEY_BLUETOOTH:
1765                                 if (has_cap(ACER_CAP_WIRELESS))
1766                                         rfkill_set_sw_state(wireless_rfkill,
1767                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1768                                 if (has_cap(ACER_CAP_THREEG))
1769                                         rfkill_set_sw_state(threeg_rfkill,
1770                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1771                                 if (has_cap(ACER_CAP_BLUETOOTH))
1772                                         rfkill_set_sw_state(bluetooth_rfkill,
1773                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1774                                 break;
1775                         case KEY_TOUCHPAD_TOGGLE:
1776                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1777                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1778                         }
1779                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1780                 }
1781                 break;
1782         case WMID_ACCEL_EVENT:
1783                 acer_gsensor_event();
1784                 break;
1785         default:
1786                 pr_warn("Unknown function number - %d - %d\n",
1787                         return_value.function, return_value.key_num);
1788                 break;
1789         }
1790 }
1791
1792 static acpi_status __init
1793 wmid3_set_function_mode(struct func_input_params *params,
1794                         struct func_return_value *return_value)
1795 {
1796         acpi_status status;
1797         union acpi_object *obj;
1798
1799         struct acpi_buffer input = { sizeof(struct func_input_params), params };
1800         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1801
1802         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1803         if (ACPI_FAILURE(status))
1804                 return status;
1805
1806         obj = output.pointer;
1807
1808         if (!obj)
1809                 return AE_ERROR;
1810         else if (obj->type != ACPI_TYPE_BUFFER) {
1811                 kfree(obj);
1812                 return AE_ERROR;
1813         }
1814         if (obj->buffer.length != 4) {
1815                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1816                 kfree(obj);
1817                 return AE_ERROR;
1818         }
1819
1820         *return_value = *((struct func_return_value *)obj->buffer.pointer);
1821         kfree(obj);
1822
1823         return status;
1824 }
1825
1826 static int __init acer_wmi_enable_ec_raw(void)
1827 {
1828         struct func_return_value return_value;
1829         acpi_status status;
1830         struct func_input_params params = {
1831                 .function_num = 0x1,
1832                 .commun_devices = 0xFFFF,
1833                 .devices = 0xFFFF,
1834                 .app_status = 0x00,             /* Launch Manager Deactive */
1835                 .app_mask = 0x01,
1836         };
1837
1838         status = wmid3_set_function_mode(&params, &return_value);
1839
1840         if (return_value.error_code || return_value.ec_return_value)
1841                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1842                         return_value.error_code,
1843                         return_value.ec_return_value);
1844         else
1845                 pr_info("Enabled EC raw mode\n");
1846
1847         return status;
1848 }
1849
1850 static int __init acer_wmi_enable_lm(void)
1851 {
1852         struct func_return_value return_value;
1853         acpi_status status;
1854         struct func_input_params params = {
1855                 .function_num = 0x1,
1856                 .commun_devices = 0xFFFF,
1857                 .devices = 0xFFFF,
1858                 .app_status = 0x01,            /* Launch Manager Active */
1859                 .app_mask = 0x01,
1860         };
1861
1862         status = wmid3_set_function_mode(&params, &return_value);
1863
1864         if (return_value.error_code || return_value.ec_return_value)
1865                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1866                         return_value.error_code,
1867                         return_value.ec_return_value);
1868
1869         return status;
1870 }
1871
1872 static int __init acer_wmi_enable_rf_button(void)
1873 {
1874         struct func_return_value return_value;
1875         acpi_status status;
1876         struct func_input_params params = {
1877                 .function_num = 0x1,
1878                 .commun_devices = 0xFFFF,
1879                 .devices = 0xFFFF,
1880                 .app_status = 0x10,            /* RF Button Active */
1881                 .app_mask = 0x10,
1882         };
1883
1884         status = wmid3_set_function_mode(&params, &return_value);
1885
1886         if (return_value.error_code || return_value.ec_return_value)
1887                 pr_warn("Enabling RF Button failed: 0x%x - 0x%x\n",
1888                         return_value.error_code,
1889                         return_value.ec_return_value);
1890
1891         return status;
1892 }
1893
1894 #define ACER_WMID_ACCEL_HID     "BST0001"
1895
1896 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1897                                                 void *ctx, void **retval)
1898 {
1899         struct acpi_device *dev;
1900
1901         if (!strcmp(ctx, "SENR")) {
1902                 if (acpi_bus_get_device(ah, &dev))
1903                         return AE_OK;
1904                 if (strcmp(ACER_WMID_ACCEL_HID, acpi_device_hid(dev)))
1905                         return AE_OK;
1906         } else
1907                 return AE_OK;
1908
1909         *(acpi_handle *)retval = ah;
1910
1911         return AE_CTRL_TERMINATE;
1912 }
1913
1914 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1915                                         acpi_handle *ah)
1916 {
1917         acpi_status status;
1918         acpi_handle handle;
1919
1920         BUG_ON(!name || !ah);
1921
1922         handle = NULL;
1923         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1924                                         (void *)name, &handle);
1925         if (ACPI_SUCCESS(status) && handle) {
1926                 *ah = handle;
1927                 return 0;
1928         } else {
1929                 return -ENODEV;
1930         }
1931 }
1932
1933 static int __init acer_wmi_accel_setup(void)
1934 {
1935         int err;
1936
1937         err = acer_wmi_get_handle("SENR", ACER_WMID_ACCEL_HID, &gsensor_handle);
1938         if (err)
1939                 return err;
1940
1941         interface->capability |= ACER_CAP_ACCEL;
1942
1943         acer_wmi_accel_dev = input_allocate_device();
1944         if (!acer_wmi_accel_dev)
1945                 return -ENOMEM;
1946
1947         acer_wmi_accel_dev->open = acer_gsensor_open;
1948
1949         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1950         acer_wmi_accel_dev->phys = "wmi/input1";
1951         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1952         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1953         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1954         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1955         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1956
1957         err = input_register_device(acer_wmi_accel_dev);
1958         if (err)
1959                 goto err_free_dev;
1960
1961         return 0;
1962
1963 err_free_dev:
1964         input_free_device(acer_wmi_accel_dev);
1965         return err;
1966 }
1967
1968 static void acer_wmi_accel_destroy(void)
1969 {
1970         input_unregister_device(acer_wmi_accel_dev);
1971 }
1972
1973 static int __init acer_wmi_input_setup(void)
1974 {
1975         acpi_status status;
1976         int err;
1977
1978         acer_wmi_input_dev = input_allocate_device();
1979         if (!acer_wmi_input_dev)
1980                 return -ENOMEM;
1981
1982         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1983         acer_wmi_input_dev->phys = "wmi/input0";
1984         acer_wmi_input_dev->id.bustype = BUS_HOST;
1985
1986         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1987         if (err)
1988                 goto err_free_dev;
1989
1990         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1991                                                 acer_wmi_notify, NULL);
1992         if (ACPI_FAILURE(status)) {
1993                 err = -EIO;
1994                 goto err_free_dev;
1995         }
1996
1997         err = input_register_device(acer_wmi_input_dev);
1998         if (err)
1999                 goto err_uninstall_notifier;
2000
2001         return 0;
2002
2003 err_uninstall_notifier:
2004         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
2005 err_free_dev:
2006         input_free_device(acer_wmi_input_dev);
2007         return err;
2008 }
2009
2010 static void acer_wmi_input_destroy(void)
2011 {
2012         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
2013         input_unregister_device(acer_wmi_input_dev);
2014 }
2015
2016 /*
2017  * debugfs functions
2018  */
2019 static u32 get_wmid_devices(void)
2020 {
2021         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
2022         union acpi_object *obj;
2023         acpi_status status;
2024         u32 devices = 0;
2025
2026         status = wmi_query_block(WMID_GUID2, 0, &out);
2027         if (ACPI_FAILURE(status))
2028                 return 0;
2029
2030         obj = (union acpi_object *) out.pointer;
2031         if (obj) {
2032                 if (obj->type == ACPI_TYPE_BUFFER &&
2033                         (obj->buffer.length == sizeof(u32) ||
2034                         obj->buffer.length == sizeof(u64))) {
2035                         devices = *((u32 *) obj->buffer.pointer);
2036                 } else if (obj->type == ACPI_TYPE_INTEGER) {
2037                         devices = (u32) obj->integer.value;
2038                 }
2039         }
2040
2041         kfree(out.pointer);
2042         return devices;
2043 }
2044
2045 /*
2046  * Platform device
2047  */
2048 static int acer_platform_probe(struct platform_device *device)
2049 {
2050         int err;
2051
2052         if (has_cap(ACER_CAP_MAILLED)) {
2053                 err = acer_led_init(&device->dev);
2054                 if (err)
2055                         goto error_mailled;
2056         }
2057
2058         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2059                 err = acer_backlight_init(&device->dev);
2060                 if (err)
2061                         goto error_brightness;
2062         }
2063
2064         err = acer_rfkill_init(&device->dev);
2065         if (err)
2066                 goto error_rfkill;
2067
2068         return err;
2069
2070 error_rfkill:
2071         if (has_cap(ACER_CAP_BRIGHTNESS))
2072                 acer_backlight_exit();
2073 error_brightness:
2074         if (has_cap(ACER_CAP_MAILLED))
2075                 acer_led_exit();
2076 error_mailled:
2077         return err;
2078 }
2079
2080 static int acer_platform_remove(struct platform_device *device)
2081 {
2082         if (has_cap(ACER_CAP_MAILLED))
2083                 acer_led_exit();
2084         if (has_cap(ACER_CAP_BRIGHTNESS))
2085                 acer_backlight_exit();
2086
2087         acer_rfkill_exit();
2088         return 0;
2089 }
2090
2091 #ifdef CONFIG_PM_SLEEP
2092 static int acer_suspend(struct device *dev)
2093 {
2094         u32 value;
2095         struct acer_data *data = &interface->data;
2096
2097         if (!data)
2098                 return -ENOMEM;
2099
2100         if (has_cap(ACER_CAP_MAILLED)) {
2101                 get_u32(&value, ACER_CAP_MAILLED);
2102                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2103                 data->mailled = value;
2104         }
2105
2106         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2107                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2108                 data->brightness = value;
2109         }
2110
2111         return 0;
2112 }
2113
2114 static int acer_resume(struct device *dev)
2115 {
2116         struct acer_data *data = &interface->data;
2117
2118         if (!data)
2119                 return -ENOMEM;
2120
2121         if (has_cap(ACER_CAP_MAILLED))
2122                 set_u32(data->mailled, ACER_CAP_MAILLED);
2123
2124         if (has_cap(ACER_CAP_BRIGHTNESS))
2125                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2126
2127         if (has_cap(ACER_CAP_ACCEL))
2128                 acer_gsensor_init();
2129
2130         return 0;
2131 }
2132 #else
2133 #define acer_suspend    NULL
2134 #define acer_resume     NULL
2135 #endif
2136
2137 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2138
2139 static void acer_platform_shutdown(struct platform_device *device)
2140 {
2141         struct acer_data *data = &interface->data;
2142
2143         if (!data)
2144                 return;
2145
2146         if (has_cap(ACER_CAP_MAILLED))
2147                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2148 }
2149
2150 static struct platform_driver acer_platform_driver = {
2151         .driver = {
2152                 .name = "acer-wmi",
2153                 .pm = &acer_pm,
2154         },
2155         .probe = acer_platform_probe,
2156         .remove = acer_platform_remove,
2157         .shutdown = acer_platform_shutdown,
2158 };
2159
2160 static struct platform_device *acer_platform_device;
2161
2162 static void remove_debugfs(void)
2163 {
2164         debugfs_remove(interface->debug.devices);
2165         debugfs_remove(interface->debug.root);
2166 }
2167
2168 static int __init create_debugfs(void)
2169 {
2170         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2171         if (!interface->debug.root) {
2172                 pr_err("Failed to create debugfs directory");
2173                 return -ENOMEM;
2174         }
2175
2176         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2177                                         interface->debug.root,
2178                                         &interface->debug.wmid_devices);
2179         if (!interface->debug.devices)
2180                 goto error_debugfs;
2181
2182         return 0;
2183
2184 error_debugfs:
2185         remove_debugfs();
2186         return -ENOMEM;
2187 }
2188
2189 static int __init acer_wmi_init(void)
2190 {
2191         int err;
2192
2193         pr_info("Acer Laptop ACPI-WMI Extras\n");
2194
2195         if (dmi_check_system(acer_blacklist)) {
2196                 pr_info("Blacklisted hardware detected - not loading\n");
2197                 return -ENODEV;
2198         }
2199
2200         find_quirks();
2201
2202         /*
2203          * The AMW0_GUID1 wmi is not only found on Acer family but also other
2204          * machines like Lenovo, Fujitsu and Medion. In the past days,
2205          * acer-wmi driver handled those non-Acer machines by quirks list.
2206          * But actually acer-wmi driver was loaded on any machines that have
2207          * AMW0_GUID1. This behavior is strange because those machines should
2208          * be supported by appropriate wmi drivers. e.g. fujitsu-laptop,
2209          * ideapad-laptop. So, here checks the machine that has AMW0_GUID1
2210          * should be in Acer/Gateway/Packard Bell white list, or it's already
2211          * in the past quirk list.
2212          */
2213         if (wmi_has_guid(AMW0_GUID1) &&
2214             !dmi_check_system(amw0_whitelist) &&
2215             quirks == &quirk_unknown) {
2216                 pr_debug("Unsupported machine has AMW0_GUID1, unable to load\n");
2217                 return -ENODEV;
2218         }
2219
2220         /*
2221          * Detect which ACPI-WMI interface we're using.
2222          */
2223         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2224                 interface = &AMW0_V2_interface;
2225
2226         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2227                 interface = &wmid_interface;
2228
2229         if (wmi_has_guid(WMID_GUID3))
2230                 interface = &wmid_v2_interface;
2231
2232         if (interface)
2233                 dmi_walk(type_aa_dmi_decode, NULL);
2234
2235         if (wmi_has_guid(WMID_GUID2) && interface) {
2236                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2237                         pr_err("Unable to detect available WMID devices\n");
2238                         return -ENODEV;
2239                 }
2240                 /* WMID always provides brightness methods */
2241                 interface->capability |= ACER_CAP_BRIGHTNESS;
2242         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2243                 pr_err("No WMID device detection method found\n");
2244                 return -ENODEV;
2245         }
2246
2247         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2248                 interface = &AMW0_interface;
2249
2250                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2251                         pr_err("Unable to detect available AMW0 devices\n");
2252                         return -ENODEV;
2253                 }
2254         }
2255
2256         if (wmi_has_guid(AMW0_GUID1))
2257                 AMW0_find_mailled();
2258
2259         if (!interface) {
2260                 pr_err("No or unsupported WMI interface, unable to load\n");
2261                 return -ENODEV;
2262         }
2263
2264         set_quirks();
2265
2266         if (dmi_check_system(video_vendor_dmi_table))
2267                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2268
2269         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2270                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2271
2272         if (wmi_has_guid(WMID_GUID3)) {
2273                 if (ACPI_FAILURE(acer_wmi_enable_rf_button()))
2274                         pr_warn("Cannot enable RF Button Driver\n");
2275
2276                 if (ec_raw_mode) {
2277                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2278                                 pr_err("Cannot enable EC raw mode\n");
2279                                 return -ENODEV;
2280                         }
2281                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2282                         pr_err("Cannot enable Launch Manager mode\n");
2283                         return -ENODEV;
2284                 }
2285         } else if (ec_raw_mode) {
2286                 pr_info("No WMID EC raw mode enable method\n");
2287         }
2288
2289         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2290                 err = acer_wmi_input_setup();
2291                 if (err)
2292                         return err;
2293                 err = acer_wmi_accel_setup();
2294                 if (err && err != -ENODEV)
2295                         pr_warn("Cannot enable accelerometer\n");
2296         }
2297
2298         err = platform_driver_register(&acer_platform_driver);
2299         if (err) {
2300                 pr_err("Unable to register platform driver\n");
2301                 goto error_platform_register;
2302         }
2303
2304         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2305         if (!acer_platform_device) {
2306                 err = -ENOMEM;
2307                 goto error_device_alloc;
2308         }
2309
2310         err = platform_device_add(acer_platform_device);
2311         if (err)
2312                 goto error_device_add;
2313
2314         if (wmi_has_guid(WMID_GUID2)) {
2315                 interface->debug.wmid_devices = get_wmid_devices();
2316                 err = create_debugfs();
2317                 if (err)
2318                         goto error_create_debugfs;
2319         }
2320
2321         /* Override any initial settings with values from the commandline */
2322         acer_commandline_init();
2323
2324         return 0;
2325
2326 error_create_debugfs:
2327         platform_device_del(acer_platform_device);
2328 error_device_add:
2329         platform_device_put(acer_platform_device);
2330 error_device_alloc:
2331         platform_driver_unregister(&acer_platform_driver);
2332 error_platform_register:
2333         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2334                 acer_wmi_input_destroy();
2335         if (has_cap(ACER_CAP_ACCEL))
2336                 acer_wmi_accel_destroy();
2337
2338         return err;
2339 }
2340
2341 static void __exit acer_wmi_exit(void)
2342 {
2343         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2344                 acer_wmi_input_destroy();
2345
2346         if (has_cap(ACER_CAP_ACCEL))
2347                 acer_wmi_accel_destroy();
2348
2349         remove_debugfs();
2350         platform_device_unregister(acer_platform_device);
2351         platform_driver_unregister(&acer_platform_driver);
2352
2353         pr_info("Acer Laptop WMI Extras unloaded\n");
2354         return;
2355 }
2356
2357 module_init(acer_wmi_init);
2358 module_exit(acer_wmi_exit);