drivers/platform/x86/acer-wmi.c

   1 /*
   2  *  Acer WMI Laptop Extras
   3  *
   4  *  Copyright (C) 2007-2009     Carlos Corbacho <carlos@strangeworlds.co.uk>
   5  *
   6  *  Based on acer_acpi:
   7  *    Copyright (C) 2005-2007   E.M. Smith
   8  *    Copyright (C) 2007-2008   Carlos Corbacho <cathectic@gmail.com>
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  26
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/init.h>
  30 #include <linux/types.h>
  31 #include <linux/dmi.h>
  32 #include <linux/fb.h>
  33 #include <linux/backlight.h>
  34 #include <linux/leds.h>
  35 #include <linux/platform_device.h>
  36 #include <linux/acpi.h>
  37 #include <linux/i8042.h>
  38 #include <linux/rfkill.h>
  39 #include <linux/workqueue.h>
  40 #include <linux/debugfs.h>
  41 #include <linux/slab.h>
  42 #include <linux/input.h>
  43 #include <linux/input/sparse-keymap.h>
  44 #include <acpi/video.h>
  45
  46 MODULE_AUTHOR("Carlos Corbacho");
  47 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
  48 MODULE_LICENSE("GPL");
  49
  50 /*
  51  * Magic Number
  52  * Meaning is unknown - this number is required for writing to ACPI for AMW0
  53  * (it's also used in acerhk when directly accessing the BIOS)
  54  */
  55 #define ACER_AMW0_WRITE 0x9610
  56
  57 /*
  58  * Bit masks for the AMW0 interface
  59  */
  60 #define ACER_AMW0_WIRELESS_MASK  0x35
  61 #define ACER_AMW0_BLUETOOTH_MASK 0x34
  62 #define ACER_AMW0_MAILLED_MASK   0x31
  63
  64 /*
  65  * Method IDs for WMID interface
  66  */
  67 #define ACER_WMID_GET_WIRELESS_METHODID         1
  68 #define ACER_WMID_GET_BLUETOOTH_METHODID        2
  69 #define ACER_WMID_GET_BRIGHTNESS_METHODID       3
  70 #define ACER_WMID_SET_WIRELESS_METHODID         4
  71 #define ACER_WMID_SET_BLUETOOTH_METHODID        5
  72 #define ACER_WMID_SET_BRIGHTNESS_METHODID       6
  73 #define ACER_WMID_GET_THREEG_METHODID           10
  74 #define ACER_WMID_SET_THREEG_METHODID           11
  75
  76 /*
  77  * Acer ACPI method GUIDs
  78  */
  79 #define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
  80 #define AMW0_GUID2              "431F16ED-0C2B-444C-B267-27DEB140CF9C"
  81 #define WMID_GUID1              "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
  82 #define WMID_GUID2              "95764E09-FB56-4E83-B31A-37761F60994A"
  83 #define WMID_GUID3              "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
  84
  85 /*
  86  * Acer ACPI event GUIDs
  87  */
  88 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
  89
  90 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
  91 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
  92 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
  93
  94 enum acer_wmi_event_ids {
  95         WMID_HOTKEY_EVENT = 0x1,
  96         WMID_ACCEL_EVENT = 0x5,
  97 };
  98
  99 static const struct key_entry acer_wmi_keymap[] = {
 100         {KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
 101         {KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
 102         {KE_KEY, 0x04, {KEY_WLAN} },     /* WiFi */
 103         {KE_KEY, 0x12, {KEY_BLUETOOTH} },       /* BT */
 104         {KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
 105         {KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
 106         {KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
 107         {KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
 108         {KE_KEY, 0x29, {KEY_PROG3} },    /* P_Key for TM8372 */
 109         {KE_IGNORE, 0x41, {KEY_MUTE} },
 110         {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
 111         {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
 112         {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
 113         {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
 114         {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
 115         {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
 116         {KE_IGNORE, 0x45, {KEY_STOP} },
 117         {KE_IGNORE, 0x50, {KEY_STOP} },
 118         {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
 119         {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
 120         {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
 121         {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
 122         {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 123         {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 124         {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
 125         {KE_IGNORE, 0x81, {KEY_SLEEP} },
 126         {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
 127         {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
 128         {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
 129         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 130         {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
 131         {KE_END, 0}
 132 };
 133
 134 static struct input_dev *acer_wmi_input_dev;
 135 static struct input_dev *acer_wmi_accel_dev;
 136
 137 struct event_return_value {
 138         u8 function;
 139         u8 key_num;
 140         u16 device_state;
 141         u32 reserved;
 142 } __attribute__((packed));
 143
 144 /*
 145  * GUID3 Get Device Status device flags
 146  */
 147 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 148 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 149 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 150 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 151 #define ACER_WMID3_GDS_TOUCHPAD         (1<<1)  /* Touchpad */
 152
 153 struct lm_input_params {
 154         u8 function_num;        /* Function Number */
 155         u16 commun_devices;     /* Communication type devices default status */
 156         u16 devices;            /* Other type devices default status */
 157         u8 lm_status;           /* Launch Manager Status */
 158         u16 reserved;
 159 } __attribute__((packed));
 160
 161 struct lm_return_value {
 162         u8 error_code;          /* Error Code */
 163         u8 ec_return_value;     /* EC Return Value */
 164         u16 reserved;
 165 } __attribute__((packed));
 166
 167 struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 168         u8 function_num;        /* Function Number */
 169         u8 hotkey_number;       /* Hotkey Number */
 170         u16 devices;            /* Set Device */
 171         u8 volume_value;        /* Volume Value */
 172 } __attribute__((packed));
 173
 174 struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 175         u8 function_num;        /* Function Number */
 176         u8 hotkey_number;       /* Hotkey Number */
 177         u16 devices;            /* Get Device */
 178 } __attribute__((packed));
 179
 180 struct wmid3_gds_return_value { /* Get Device Status return value*/
 181         u8 error_code;          /* Error Code */
 182         u8 ec_return_value;     /* EC Return Value */
 183         u16 devices;            /* Current Device Status */
 184         u32 reserved;
 185 } __attribute__((packed));
 186
 187 struct hotkey_function_type_aa {
 188         u8 type;
 189         u8 length;
 190         u16 handle;
 191         u16 commun_func_bitmap;
 192         u16 application_func_bitmap;
 193         u16 media_func_bitmap;
 194         u16 display_func_bitmap;
 195         u16 others_func_bitmap;
 196         u8 commun_fn_key_number;
 197 } __attribute__((packed));
 198
 199 /*
 200  * Interface capability flags
 201  */
 202 #define ACER_CAP_MAILLED                (1<<0)
 203 #define ACER_CAP_WIRELESS               (1<<1)
 204 #define ACER_CAP_BLUETOOTH              (1<<2)
 205 #define ACER_CAP_BRIGHTNESS             (1<<3)
 206 #define ACER_CAP_THREEG                 (1<<4)
 207 #define ACER_CAP_ACCEL                  (1<<5)
 208 #define ACER_CAP_ANY                    (0xFFFFFFFF)
 209
 210 /*
 211  * Interface type flags
 212  */
 213 enum interface_flags {
 214         ACER_AMW0,
 215         ACER_AMW0_V2,
 216         ACER_WMID,
 217         ACER_WMID_v2,
 218 };
 219
 220 #define ACER_DEFAULT_WIRELESS  0
 221 #define ACER_DEFAULT_BLUETOOTH 0
 222 #define ACER_DEFAULT_MAILLED   0
 223 #define ACER_DEFAULT_THREEG    0
 224
 225 static int max_brightness = 0xF;
 226
 227 static int mailled = -1;
 228 static int brightness = -1;
 229 static int threeg = -1;
 230 static int force_series;
 231 static bool ec_raw_mode;
 232 static bool has_type_aa;
 233 static u16 commun_func_bitmap;
 234 static u8 commun_fn_key_number;
 235
 236 module_param(mailled, int, 0444);
 237 module_param(brightness, int, 0444);
 238 module_param(threeg, int, 0444);
 239 module_param(force_series, int, 0444);
 240 module_param(ec_raw_mode, bool, 0444);
 241 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 242 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 243 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 244 MODULE_PARM_DESC(force_series, "Force a different laptop series");
 245 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 246
 247 struct acer_data {
 248         int mailled;
 249         int threeg;
 250         int brightness;
 251 };
 252
 253 struct acer_debug {
 254         struct dentry *root;
 255         struct dentry *devices;
 256         u32 wmid_devices;
 257 };
 258
 259 static struct rfkill *wireless_rfkill;
 260 static struct rfkill *bluetooth_rfkill;
 261 static struct rfkill *threeg_rfkill;
 262 static bool rfkill_inited;
 263
 264 /* Each low-level interface must define at least some of the following */
 265 struct wmi_interface {
 266         /* The WMI device type */
 267         u32 type;
 268
 269         /* The capabilities this interface provides */
 270         u32 capability;
 271
 272         /* Private data for the current interface */
 273         struct acer_data data;
 274
 275         /* debugfs entries associated with this interface */
 276         struct acer_debug debug;
 277 };
 278
 279 /* The static interface pointer, points to the currently detected interface */
 280 static struct wmi_interface *interface;
 281
 282 /*
 283  * Embedded Controller quirks
 284  * Some laptops require us to directly access the EC to either enable or query
 285  * features that are not available through WMI.
 286  */
 287
 288 struct quirk_entry {
 289         u8 wireless;
 290         u8 mailled;
 291         s8 brightness;
 292         u8 bluetooth;
 293 };
 294
 295 static struct quirk_entry *quirks;
 296
 297 static void set_quirks(void)
 298 {
 299         if (!interface)
 300                 return;
 301
 302         if (quirks->mailled)
 303                 interface->capability |= ACER_CAP_MAILLED;
 304
 305         if (quirks->brightness)
 306                 interface->capability |= ACER_CAP_BRIGHTNESS;
 307 }
 308
 309 static int dmi_matched(const struct dmi_system_id *dmi)
 310 {
 311         quirks = dmi->driver_data;
 312         return 1;
 313 }
 314
 315 static struct quirk_entry quirk_unknown = {
 316 };
 317
 318 static struct quirk_entry quirk_acer_aspire_1520 = {
 319         .brightness = -1,
 320 };
 321
 322 static struct quirk_entry quirk_acer_travelmate_2490 = {
 323         .mailled = 1,
 324 };
 325
 326 /* This AMW0 laptop has no bluetooth */
 327 static struct quirk_entry quirk_medion_md_98300 = {
 328         .wireless = 1,
 329 };
 330
 331 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 332         .wireless = 2,
 333 };
 334
 335 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 336         .wireless = 3,
 337 };
 338
 339 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
 340 static struct dmi_system_id acer_blacklist[] = {
 341         {
 342                 .ident = "Acer Aspire One (SSD)",
 343                 .matches = {
 344                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 345                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 346                 },
 347         },
 348         {
 349                 .ident = "Acer Aspire One (HDD)",
 350                 .matches = {
 351                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 352                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 353                 },
 354         },
 355         {}
 356 };
 357
 358 static struct dmi_system_id acer_quirks[] = {
 359         {
 360                 .callback = dmi_matched,
 361                 .ident = "Acer Aspire 1360",
 362                 .matches = {
 363                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 364                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 365                 },
 366                 .driver_data = &quirk_acer_aspire_1520,
 367         },
 368         {
 369                 .callback = dmi_matched,
 370                 .ident = "Acer Aspire 1520",
 371                 .matches = {
 372                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 373                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 374                 },
 375                 .driver_data = &quirk_acer_aspire_1520,
 376         },
 377         {
 378                 .callback = dmi_matched,
 379                 .ident = "Acer Aspire 3100",
 380                 .matches = {
 381                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 382                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 383                 },
 384                 .driver_data = &quirk_acer_travelmate_2490,
 385         },
 386         {
 387                 .callback = dmi_matched,
 388                 .ident = "Acer Aspire 3610",
 389                 .matches = {
 390                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 391                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 392                 },
 393                 .driver_data = &quirk_acer_travelmate_2490,
 394         },
 395         {
 396                 .callback = dmi_matched,
 397                 .ident = "Acer Aspire 5100",
 398                 .matches = {
 399                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 400                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 401                 },
 402                 .driver_data = &quirk_acer_travelmate_2490,
 403         },
 404         {
 405                 .callback = dmi_matched,
 406                 .ident = "Acer Aspire 5610",
 407                 .matches = {
 408                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 409                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 410                 },
 411                 .driver_data = &quirk_acer_travelmate_2490,
 412         },
 413         {
 414                 .callback = dmi_matched,
 415                 .ident = "Acer Aspire 5630",
 416                 .matches = {
 417                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 418                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 419                 },
 420                 .driver_data = &quirk_acer_travelmate_2490,
 421         },
 422         {
 423                 .callback = dmi_matched,
 424                 .ident = "Acer Aspire 5650",
 425                 .matches = {
 426                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 427                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 428                 },
 429                 .driver_data = &quirk_acer_travelmate_2490,
 430         },
 431         {
 432                 .callback = dmi_matched,
 433                 .ident = "Acer Aspire 5680",
 434                 .matches = {
 435                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 436                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 437                 },
 438                 .driver_data = &quirk_acer_travelmate_2490,
 439         },
 440         {
 441                 .callback = dmi_matched,
 442                 .ident = "Acer Aspire 9110",
 443                 .matches = {
 444                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 445                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 446                 },
 447                 .driver_data = &quirk_acer_travelmate_2490,
 448         },
 449         {
 450                 .callback = dmi_matched,
 451                 .ident = "Acer TravelMate 2490",
 452                 .matches = {
 453                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 454                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 455                 },
 456                 .driver_data = &quirk_acer_travelmate_2490,
 457         },
 458         {
 459                 .callback = dmi_matched,
 460                 .ident = "Acer TravelMate 4200",
 461                 .matches = {
 462                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 463                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 464                 },
 465                 .driver_data = &quirk_acer_travelmate_2490,
 466         },
 467         {
 468                 .callback = dmi_matched,
 469                 .ident = "Fujitsu Siemens Amilo Li 1718",
 470                 .matches = {
 471                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 472                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 473                 },
 474                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 475         },
 476         {
 477                 .callback = dmi_matched,
 478                 .ident = "Medion MD 98300",
 479                 .matches = {
 480                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 481                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 482                 },
 483                 .driver_data = &quirk_medion_md_98300,
 484         },
 485         {
 486                 .callback = dmi_matched,
 487                 .ident = "Lenovo Ideapad S205",
 488                 .matches = {
 489                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 490                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 491                 },
 492                 .driver_data = &quirk_lenovo_ideapad_s205,
 493         },
 494         {
 495                 .callback = dmi_matched,
 496                 .ident = "Lenovo Ideapad S205 (Brazos)",
 497                 .matches = {
 498                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 499                         DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 500                 },
 501                 .driver_data = &quirk_lenovo_ideapad_s205,
 502         },
 503         {
 504                 .callback = dmi_matched,
 505                 .ident = "Lenovo 3000 N200",
 506                 .matches = {
 507                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 508                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 509                 },
 510                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 511         },
 512         {
 513                 .callback = dmi_matched,
 514                 .ident = "Lenovo Ideapad S205-10382JG",
 515                 .matches = {
 516                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 517                         DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
 518                 },
 519                 .driver_data = &quirk_lenovo_ideapad_s205,
 520         },
 521         {
 522                 .callback = dmi_matched,
 523                 .ident = "Lenovo Ideapad S205-1038DPG",
 524                 .matches = {
 525                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 526                         DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
 527                 },
 528                 .driver_data = &quirk_lenovo_ideapad_s205,
 529         },
 530         {}
 531 };
 532
 533 static int video_set_backlight_video_vendor(const struct dmi_system_id *d)
 534 {
 535         interface->capability &= ~ACER_CAP_BRIGHTNESS;
 536         pr_info("Brightness must be controlled by generic video driver\n");
 537         return 0;
 538 }
 539
 540 static const struct dmi_system_id video_vendor_dmi_table[] = {
 541         {
 542                 .callback = video_set_backlight_video_vendor,
 543                 .ident = "Acer TravelMate 4750",
 544                 .matches = {
 545                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 546                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 547                 },
 548         },
 549         {
 550                 .callback = video_set_backlight_video_vendor,
 551                 .ident = "Acer Extensa 5235",
 552                 .matches = {
 553                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 554                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 555                 },
 556         },
 557         {
 558                 .callback = video_set_backlight_video_vendor,
 559                 .ident = "Acer TravelMate 5760",
 560                 .matches = {
 561                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 562                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 563                 },
 564         },
 565         {
 566                 .callback = video_set_backlight_video_vendor,
 567                 .ident = "Acer Aspire 5750",
 568                 .matches = {
 569                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 570                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 571                 },
 572         },
 573         {
 574                 /*
 575                  * Note no video_set_backlight_video_vendor, we must use the
 576                  * acer interface, as there is no native backlight interface.
 577                  */
 578                 .ident = "Acer KAV80",
 579                 .matches = {
 580                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 581                         DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
 582                 },
 583         },
 584         {}
 585 };
 586
 587 /* Find which quirks are needed for a particular vendor/ model pair */
 588 static void find_quirks(void)
 589 {
 590         if (!force_series) {
 591                 dmi_check_system(acer_quirks);
 592         } else if (force_series == 2490) {
 593                 quirks = &quirk_acer_travelmate_2490;
 594         }
 595
 596         if (quirks == NULL)
 597                 quirks = &quirk_unknown;
 598
 599         set_quirks();
 600 }
 601
 602 /*
 603  * General interface convenience methods
 604  */
 605
 606 static bool has_cap(u32 cap)
 607 {
 608         if ((interface->capability & cap) != 0)
 609                 return 1;
 610
 611         return 0;
 612 }
 613
 614 /*
 615  * AMW0 (V1) interface
 616  */
 617 struct wmab_args {
 618         u32 eax;
 619         u32 ebx;
 620         u32 ecx;
 621         u32 edx;
 622 };
 623
 624 struct wmab_ret {
 625         u32 eax;
 626         u32 ebx;
 627         u32 ecx;
 628         u32 edx;
 629         u32 eex;
 630 };
 631
 632 static acpi_status wmab_execute(struct wmab_args *regbuf,
 633 struct acpi_buffer *result)
 634 {
 635         struct acpi_buffer input;
 636         acpi_status status;
 637         input.length = sizeof(struct wmab_args);
 638         input.pointer = (u8 *)regbuf;
 639
 640         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
 641
 642         return status;
 643 }
 644
 645 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 646 {
 647         int err;
 648         u8 result;
 649
 650         switch (cap) {
 651         case ACER_CAP_MAILLED:
 652                 switch (quirks->mailled) {
 653                 default:
 654                         err = ec_read(0xA, &result);
 655                         if (err)
 656                                 return AE_ERROR;
 657                         *value = (result >> 7) & 0x1;
 658                         return AE_OK;
 659                 }
 660                 break;
 661         case ACER_CAP_WIRELESS:
 662                 switch (quirks->wireless) {
 663                 case 1:
 664                         err = ec_read(0x7B, &result);
 665                         if (err)
 666                                 return AE_ERROR;
 667                         *value = result & 0x1;
 668                         return AE_OK;
 669                 case 2:
 670                         err = ec_read(0x71, &result);
 671                         if (err)
 672                                 return AE_ERROR;
 673                         *value = result & 0x1;
 674                         return AE_OK;
 675                 case 3:
 676                         err = ec_read(0x78, &result);
 677                         if (err)
 678                                 return AE_ERROR;
 679                         *value = result & 0x1;
 680                         return AE_OK;
 681                 default:
 682                         err = ec_read(0xA, &result);
 683                         if (err)
 684                                 return AE_ERROR;
 685                         *value = (result >> 2) & 0x1;
 686                         return AE_OK;
 687                 }
 688                 break;
 689         case ACER_CAP_BLUETOOTH:
 690                 switch (quirks->bluetooth) {
 691                 default:
 692                         err = ec_read(0xA, &result);
 693                         if (err)
 694                                 return AE_ERROR;
 695                         *value = (result >> 4) & 0x1;
 696                         return AE_OK;
 697                 }
 698                 break;
 699         case ACER_CAP_BRIGHTNESS:
 700                 switch (quirks->brightness) {
 701                 default:
 702                         err = ec_read(0x83, &result);
 703                         if (err)
 704                                 return AE_ERROR;
 705                         *value = result;
 706                         return AE_OK;
 707                 }
 708                 break;
 709         default:
 710                 return AE_ERROR;
 711         }
 712         return AE_OK;
 713 }
 714
 715 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 716 {
 717         struct wmab_args args;
 718
 719         args.eax = ACER_AMW0_WRITE;
 720         args.ebx = value ? (1<<8) : 0;
 721         args.ecx = args.edx = 0;
 722
 723         switch (cap) {
 724         case ACER_CAP_MAILLED:
 725                 if (value > 1)
 726                         return AE_BAD_PARAMETER;
 727                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 728                 break;
 729         case ACER_CAP_WIRELESS:
 730                 if (value > 1)
 731                         return AE_BAD_PARAMETER;
 732                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 733                 break;
 734         case ACER_CAP_BLUETOOTH:
 735                 if (value > 1)
 736                         return AE_BAD_PARAMETER;
 737                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 738                 break;
 739         case ACER_CAP_BRIGHTNESS:
 740                 if (value > max_brightness)
 741                         return AE_BAD_PARAMETER;
 742                 switch (quirks->brightness) {
 743                 default:
 744                         return ec_write(0x83, value);
 745                         break;
 746                 }
 747         default:
 748                 return AE_ERROR;
 749         }
 750
 751         /* Actually do the set */
 752         return wmab_execute(&args, NULL);
 753 }
 754
 755 static acpi_status AMW0_find_mailled(void)
 756 {
 757         struct wmab_args args;
 758         struct wmab_ret ret;
 759         acpi_status status = AE_OK;
 760         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 761         union acpi_object *obj;
 762
 763         args.eax = 0x86;
 764         args.ebx = args.ecx = args.edx = 0;
 765
 766         status = wmab_execute(&args, &out);
 767         if (ACPI_FAILURE(status))
 768                 return status;
 769
 770         obj = (union acpi_object *) out.pointer;
 771         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 772         obj->buffer.length == sizeof(struct wmab_ret)) {
 773                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 774         } else {
 775                 kfree(out.pointer);
 776                 return AE_ERROR;
 777         }
 778
 779         if (ret.eex & 0x1)
 780                 interface->capability |= ACER_CAP_MAILLED;
 781
 782         kfree(out.pointer);
 783
 784         return AE_OK;
 785 }
 786
 787 static int AMW0_set_cap_acpi_check_device_found;
 788
 789 static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
 790         u32 level, void *context, void **retval)
 791 {
 792         AMW0_set_cap_acpi_check_device_found = 1;
 793         return AE_OK;
 794 }
 795
 796 static const struct acpi_device_id norfkill_ids[] = {
 797         { "VPC2004", 0},
 798         { "IBM0068", 0},
 799         { "LEN0068", 0},
 800         { "SNY5001", 0},        /* sony-laptop in charge */
 801         { "", 0},
 802 };
 803
 804 static int AMW0_set_cap_acpi_check_device(void)
 805 {
 806         const struct acpi_device_id *id;
 807
 808         for (id = norfkill_ids; id->id[0]; id++)
 809                 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
 810                                 NULL, NULL);
 811         return AMW0_set_cap_acpi_check_device_found;
 812 }
 813
 814 static acpi_status AMW0_set_capabilities(void)
 815 {
 816         struct wmab_args args;
 817         struct wmab_ret ret;
 818         acpi_status status;
 819         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 820         union acpi_object *obj;
 821
 822         /*
 823          * On laptops with this strange GUID (non Acer), normal probing doesn't
 824          * work.
 825          */
 826         if (wmi_has_guid(AMW0_GUID2)) {
 827                 if ((quirks != &quirk_unknown) ||
 828                     !AMW0_set_cap_acpi_check_device())
 829                         interface->capability |= ACER_CAP_WIRELESS;
 830                 return AE_OK;
 831         }
 832
 833         args.eax = ACER_AMW0_WRITE;
 834         args.ecx = args.edx = 0;
 835
 836         args.ebx = 0xa2 << 8;
 837         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 838
 839         status = wmab_execute(&args, &out);
 840         if (ACPI_FAILURE(status))
 841                 return status;
 842
 843         obj = out.pointer;
 844         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 845         obj->buffer.length == sizeof(struct wmab_ret)) {
 846                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 847         } else {
 848                 status = AE_ERROR;
 849                 goto out;
 850         }
 851
 852         if (ret.eax & 0x1)
 853                 interface->capability |= ACER_CAP_WIRELESS;
 854
 855         args.ebx = 2 << 8;
 856         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 857
 858         /*
 859          * It's ok to use existing buffer for next wmab_execute call.
 860          * But we need to kfree(out.pointer) if next wmab_execute fail.
 861          */
 862         status = wmab_execute(&args, &out);
 863         if (ACPI_FAILURE(status))
 864                 goto out;
 865
 866         obj = (union acpi_object *) out.pointer;
 867         if (obj && obj->type == ACPI_TYPE_BUFFER
 868         && obj->buffer.length == sizeof(struct wmab_ret)) {
 869                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 870         } else {
 871                 status = AE_ERROR;
 872                 goto out;
 873         }
 874
 875         if (ret.eax & 0x1)
 876                 interface->capability |= ACER_CAP_BLUETOOTH;
 877
 878         /*
 879          * This appears to be safe to enable, since all Wistron based laptops
 880          * appear to use the same EC register for brightness, even if they
 881          * differ for wireless, etc
 882          */
 883         if (quirks->brightness >= 0)
 884                 interface->capability |= ACER_CAP_BRIGHTNESS;
 885
 886         status = AE_OK;
 887 out:
 888         kfree(out.pointer);
 889         return status;
 890 }
 891
 892 static struct wmi_interface AMW0_interface = {
 893         .type = ACER_AMW0,
 894 };
 895
 896 static struct wmi_interface AMW0_V2_interface = {
 897         .type = ACER_AMW0_V2,
 898 };
 899
 900 /*
 901  * New interface (The WMID interface)
 902  */
 903 static acpi_status
 904 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 905 {
 906         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 907         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 908         union acpi_object *obj;
 909         u32 tmp = 0;
 910         acpi_status status;
 911
 912         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 913
 914         if (ACPI_FAILURE(status))
 915                 return status;
 916
 917         obj = (union acpi_object *) result.pointer;
 918         if (obj) {
 919                 if (obj->type == ACPI_TYPE_BUFFER &&
 920                         (obj->buffer.length == sizeof(u32) ||
 921                         obj->buffer.length == sizeof(u64))) {
 922                         tmp = *((u32 *) obj->buffer.pointer);
 923                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 924                         tmp = (u32) obj->integer.value;
 925                 }
 926         }
 927
 928         if (out)
 929                 *out = tmp;
 930
 931         kfree(result.pointer);
 932
 933         return status;
 934 }
 935
 936 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 937 {
 938         acpi_status status;
 939         u8 tmp;
 940         u32 result, method_id = 0;
 941
 942         switch (cap) {
 943         case ACER_CAP_WIRELESS:
 944                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 945                 break;
 946         case ACER_CAP_BLUETOOTH:
 947                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 948                 break;
 949         case ACER_CAP_BRIGHTNESS:
 950                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 951                 break;
 952         case ACER_CAP_THREEG:
 953                 method_id = ACER_WMID_GET_THREEG_METHODID;
 954                 break;
 955         case ACER_CAP_MAILLED:
 956                 if (quirks->mailled == 1) {
 957                         ec_read(0x9f, &tmp);
 958                         *value = tmp & 0x1;
 959                         return 0;
 960                 }
 961         default:
 962                 return AE_ERROR;
 963         }
 964         status = WMI_execute_u32(method_id, 0, &result);
 965
 966         if (ACPI_SUCCESS(status))
 967                 *value = (u8)result;
 968
 969         return status;
 970 }
 971
 972 static acpi_status WMID_set_u32(u32 value, u32 cap)
 973 {
 974         u32 method_id = 0;
 975         char param;
 976
 977         switch (cap) {
 978         case ACER_CAP_BRIGHTNESS:
 979                 if (value > max_brightness)
 980                         return AE_BAD_PARAMETER;
 981                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
 982                 break;
 983         case ACER_CAP_WIRELESS:
 984                 if (value > 1)
 985                         return AE_BAD_PARAMETER;
 986                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
 987                 break;
 988         case ACER_CAP_BLUETOOTH:
 989                 if (value > 1)
 990                         return AE_BAD_PARAMETER;
 991                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
 992                 break;
 993         case ACER_CAP_THREEG:
 994                 if (value > 1)
 995                         return AE_BAD_PARAMETER;
 996                 method_id = ACER_WMID_SET_THREEG_METHODID;
 997                 break;
 998         case ACER_CAP_MAILLED:
 999                 if (value > 1)
1000                         return AE_BAD_PARAMETER;
1001                 if (quirks->mailled == 1) {
1002                         param = value ? 0x92 : 0x93;
1003                         i8042_lock_chip();
1004                         i8042_command(&param, 0x1059);
1005                         i8042_unlock_chip();
1006                         return 0;
1007                 }
1008                 break;
1009         default:
1010                 return AE_ERROR;
1011         }
1012         return WMI_execute_u32(method_id, (u32)value, NULL);
1013 }
1014
1015 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1016 {
1017         struct wmid3_gds_return_value return_value;
1018         acpi_status status;
1019         union acpi_object *obj;
1020         struct wmid3_gds_get_input_param params = {
1021                 .function_num = 0x1,
1022                 .hotkey_number = commun_fn_key_number,
1023                 .devices = device,
1024         };
1025         struct acpi_buffer input = {
1026                 sizeof(struct wmid3_gds_get_input_param),
1027                 &params
1028         };
1029         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1030
1031         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1032         if (ACPI_FAILURE(status))
1033                 return status;
1034
1035         obj = output.pointer;
1036
1037         if (!obj)
1038                 return AE_ERROR;
1039         else if (obj->type != ACPI_TYPE_BUFFER) {
1040                 kfree(obj);
1041                 return AE_ERROR;
1042         }
1043         if (obj->buffer.length != 8) {
1044                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1045                 kfree(obj);
1046                 return AE_ERROR;
1047         }
1048
1049         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1050         kfree(obj);
1051
1052         if (return_value.error_code || return_value.ec_return_value)
1053                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1054                         device,
1055                         return_value.error_code,
1056                         return_value.ec_return_value);
1057         else
1058                 *value = !!(return_value.devices & device);
1059
1060         return status;
1061 }
1062
1063 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1064 {
1065         u16 device;
1066
1067         switch (cap) {
1068         case ACER_CAP_WIRELESS:
1069                 device = ACER_WMID3_GDS_WIRELESS;
1070                 break;
1071         case ACER_CAP_BLUETOOTH:
1072                 device = ACER_WMID3_GDS_BLUETOOTH;
1073                 break;
1074         case ACER_CAP_THREEG:
1075                 device = ACER_WMID3_GDS_THREEG;
1076                 break;
1077         default:
1078                 return AE_ERROR;
1079         }
1080         return wmid3_get_device_status(value, device);
1081 }
1082
1083 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1084 {
1085         struct wmid3_gds_return_value return_value;
1086         acpi_status status;
1087         union acpi_object *obj;
1088         u16 devices;
1089         struct wmid3_gds_get_input_param get_params = {
1090                 .function_num = 0x1,
1091                 .hotkey_number = commun_fn_key_number,
1092                 .devices = commun_func_bitmap,
1093         };
1094         struct acpi_buffer get_input = {
1095                 sizeof(struct wmid3_gds_get_input_param),
1096                 &get_params
1097         };
1098         struct wmid3_gds_set_input_param set_params = {
1099                 .function_num = 0x2,
1100                 .hotkey_number = commun_fn_key_number,
1101                 .devices = commun_func_bitmap,
1102         };
1103         struct acpi_buffer set_input = {
1104                 sizeof(struct wmid3_gds_set_input_param),
1105                 &set_params
1106         };
1107         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1108         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1109
1110         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1111         if (ACPI_FAILURE(status))
1112                 return status;
1113
1114         obj = output.pointer;
1115
1116         if (!obj)
1117                 return AE_ERROR;
1118         else if (obj->type != ACPI_TYPE_BUFFER) {
1119                 kfree(obj);
1120                 return AE_ERROR;
1121         }
1122         if (obj->buffer.length != 8) {
1123                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1124                 kfree(obj);
1125                 return AE_ERROR;
1126         }
1127
1128         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1129         kfree(obj);
1130
1131         if (return_value.error_code || return_value.ec_return_value) {
1132                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1133                         return_value.error_code,
1134                         return_value.ec_return_value);
1135                 return status;
1136         }
1137
1138         devices = return_value.devices;
1139         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1140
1141         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1142         if (ACPI_FAILURE(status))
1143                 return status;
1144
1145         obj = output2.pointer;
1146
1147         if (!obj)
1148                 return AE_ERROR;
1149         else if (obj->type != ACPI_TYPE_BUFFER) {
1150                 kfree(obj);
1151                 return AE_ERROR;
1152         }
1153         if (obj->buffer.length != 4) {
1154                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1155                 kfree(obj);
1156                 return AE_ERROR;
1157         }
1158
1159         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1160         kfree(obj);
1161
1162         if (return_value.error_code || return_value.ec_return_value)
1163                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1164                         return_value.error_code,
1165                         return_value.ec_return_value);
1166
1167         return status;
1168 }
1169
1170 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1171 {
1172         u16 device;
1173
1174         switch (cap) {
1175         case ACER_CAP_WIRELESS:
1176                 device = ACER_WMID3_GDS_WIRELESS;
1177                 break;
1178         case ACER_CAP_BLUETOOTH:
1179                 device = ACER_WMID3_GDS_BLUETOOTH;
1180                 break;
1181         case ACER_CAP_THREEG:
1182                 device = ACER_WMID3_GDS_THREEG;
1183                 break;
1184         default:
1185                 return AE_ERROR;
1186         }
1187         return wmid3_set_device_status(value, device);
1188 }
1189
1190 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1191 {
1192         struct hotkey_function_type_aa *type_aa;
1193
1194         /* We are looking for OEM-specific Type AAh */
1195         if (header->type != 0xAA)
1196                 return;
1197
1198         has_type_aa = true;
1199         type_aa = (struct hotkey_function_type_aa *) header;
1200
1201         pr_info("Function bitmap for Communication Button: 0x%x\n",
1202                 type_aa->commun_func_bitmap);
1203         commun_func_bitmap = type_aa->commun_func_bitmap;
1204
1205         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1206                 interface->capability |= ACER_CAP_WIRELESS;
1207         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1208                 interface->capability |= ACER_CAP_THREEG;
1209         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1210                 interface->capability |= ACER_CAP_BLUETOOTH;
1211
1212         commun_fn_key_number = type_aa->commun_fn_key_number;
1213 }
1214
1215 static acpi_status WMID_set_capabilities(void)
1216 {
1217         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1218         union acpi_object *obj;
1219         acpi_status status;
1220         u32 devices;
1221
1222         status = wmi_query_block(WMID_GUID2, 1, &out);
1223         if (ACPI_FAILURE(status))
1224                 return status;
1225
1226         obj = (union acpi_object *) out.pointer;
1227         if (obj) {
1228                 if (obj->type == ACPI_TYPE_BUFFER &&
1229                         (obj->buffer.length == sizeof(u32) ||
1230                         obj->buffer.length == sizeof(u64))) {
1231                         devices = *((u32 *) obj->buffer.pointer);
1232                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1233                         devices = (u32) obj->integer.value;
1234                 } else {
1235                         kfree(out.pointer);
1236                         return AE_ERROR;
1237                 }
1238         } else {
1239                 kfree(out.pointer);
1240                 return AE_ERROR;
1241         }
1242
1243         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1244         if (devices & 0x07)
1245                 interface->capability |= ACER_CAP_WIRELESS;
1246         if (devices & 0x40)
1247                 interface->capability |= ACER_CAP_THREEG;
1248         if (devices & 0x10)
1249                 interface->capability |= ACER_CAP_BLUETOOTH;
1250
1251         if (!(devices & 0x20))
1252                 max_brightness = 0x9;
1253
1254         kfree(out.pointer);
1255         return status;
1256 }
1257
1258 static struct wmi_interface wmid_interface = {
1259         .type = ACER_WMID,
1260 };
1261
1262 static struct wmi_interface wmid_v2_interface = {
1263         .type = ACER_WMID_v2,
1264 };
1265
1266 /*
1267  * Generic Device (interface-independent)
1268  */
1269
1270 static acpi_status get_u32(u32 *value, u32 cap)
1271 {
1272         acpi_status status = AE_ERROR;
1273
1274         switch (interface->type) {
1275         case ACER_AMW0:
1276                 status = AMW0_get_u32(value, cap);
1277                 break;
1278         case ACER_AMW0_V2:
1279                 if (cap == ACER_CAP_MAILLED) {
1280                         status = AMW0_get_u32(value, cap);
1281                         break;
1282                 }
1283         case ACER_WMID:
1284                 status = WMID_get_u32(value, cap);
1285                 break;
1286         case ACER_WMID_v2:
1287                 if (cap & (ACER_CAP_WIRELESS |
1288                            ACER_CAP_BLUETOOTH |
1289                            ACER_CAP_THREEG))
1290                         status = wmid_v2_get_u32(value, cap);
1291                 else if (wmi_has_guid(WMID_GUID2))
1292                         status = WMID_get_u32(value, cap);
1293                 break;
1294         }
1295
1296         return status;
1297 }
1298
1299 static acpi_status set_u32(u32 value, u32 cap)
1300 {
1301         acpi_status status;
1302
1303         if (interface->capability & cap) {
1304                 switch (interface->type) {
1305                 case ACER_AMW0:
1306                         return AMW0_set_u32(value, cap);
1307                 case ACER_AMW0_V2:
1308                         if (cap == ACER_CAP_MAILLED)
1309                                 return AMW0_set_u32(value, cap);
1310
1311                         /*
1312                          * On some models, some WMID methods don't toggle
1313                          * properly. For those cases, we want to run the AMW0
1314                          * method afterwards to be certain we've really toggled
1315                          * the device state.
1316                          */
1317                         if (cap == ACER_CAP_WIRELESS ||
1318                                 cap == ACER_CAP_BLUETOOTH) {
1319                                 status = WMID_set_u32(value, cap);
1320                                 if (ACPI_FAILURE(status))
1321                                         return status;
1322
1323                                 return AMW0_set_u32(value, cap);
1324                         }
1325                 case ACER_WMID:
1326                         return WMID_set_u32(value, cap);
1327                 case ACER_WMID_v2:
1328                         if (cap & (ACER_CAP_WIRELESS |
1329                                    ACER_CAP_BLUETOOTH |
1330                                    ACER_CAP_THREEG))
1331                                 return wmid_v2_set_u32(value, cap);
1332                         else if (wmi_has_guid(WMID_GUID2))
1333                                 return WMID_set_u32(value, cap);
1334                 default:
1335                         return AE_BAD_PARAMETER;
1336                 }
1337         }
1338         return AE_BAD_PARAMETER;
1339 }
1340
1341 static void __init acer_commandline_init(void)
1342 {
1343         /*
1344          * These will all fail silently if the value given is invalid, or the
1345          * capability isn't available on the given interface
1346          */
1347         if (mailled >= 0)
1348                 set_u32(mailled, ACER_CAP_MAILLED);
1349         if (!has_type_aa && threeg >= 0)
1350                 set_u32(threeg, ACER_CAP_THREEG);
1351         if (brightness >= 0)
1352                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1353 }
1354
1355 /*
1356  * LED device (Mail LED only, no other LEDs known yet)
1357  */
1358 static void mail_led_set(struct led_classdev *led_cdev,
1359 enum led_brightness value)
1360 {
1361         set_u32(value, ACER_CAP_MAILLED);
1362 }
1363
1364 static struct led_classdev mail_led = {
1365         .name = "acer-wmi::mail",
1366         .brightness_set = mail_led_set,
1367 };
1368
1369 static int acer_led_init(struct device *dev)
1370 {
1371         return led_classdev_register(dev, &mail_led);
1372 }
1373
1374 static void acer_led_exit(void)
1375 {
1376         set_u32(LED_OFF, ACER_CAP_MAILLED);
1377         led_classdev_unregister(&mail_led);
1378 }
1379
1380 /*
1381  * Backlight device
1382  */
1383 static struct backlight_device *acer_backlight_device;
1384
1385 static int read_brightness(struct backlight_device *bd)
1386 {
1387         u32 value;
1388         get_u32(&value, ACER_CAP_BRIGHTNESS);
1389         return value;
1390 }
1391
1392 static int update_bl_status(struct backlight_device *bd)
1393 {
1394         int intensity = bd->props.brightness;
1395
1396         if (bd->props.power != FB_BLANK_UNBLANK)
1397                 intensity = 0;
1398         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1399                 intensity = 0;
1400
1401         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1402
1403         return 0;
1404 }
1405
1406 static const struct backlight_ops acer_bl_ops = {
1407         .get_brightness = read_brightness,
1408         .update_status = update_bl_status,
1409 };
1410
1411 static int acer_backlight_init(struct device *dev)
1412 {
1413         struct backlight_properties props;
1414         struct backlight_device *bd;
1415
1416         memset(&props, 0, sizeof(struct backlight_properties));
1417         props.type = BACKLIGHT_PLATFORM;
1418         props.max_brightness = max_brightness;
1419         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1420                                        &props);
1421         if (IS_ERR(bd)) {
1422                 pr_err("Could not register Acer backlight device\n");
1423                 acer_backlight_device = NULL;
1424                 return PTR_ERR(bd);
1425         }
1426
1427         acer_backlight_device = bd;
1428
1429         bd->props.power = FB_BLANK_UNBLANK;
1430         bd->props.brightness = read_brightness(bd);
1431         backlight_update_status(bd);
1432         return 0;
1433 }
1434
1435 static void acer_backlight_exit(void)
1436 {
1437         backlight_device_unregister(acer_backlight_device);
1438 }
1439
1440 /*
1441  * Accelerometer device
1442  */
1443 static acpi_handle gsensor_handle;
1444
1445 static int acer_gsensor_init(void)
1446 {
1447         acpi_status status;
1448         struct acpi_buffer output;
1449         union acpi_object out_obj;
1450
1451         output.length = sizeof(out_obj);
1452         output.pointer = &out_obj;
1453         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1454         if (ACPI_FAILURE(status))
1455                 return -1;
1456
1457         return 0;
1458 }
1459
1460 static int acer_gsensor_open(struct input_dev *input)
1461 {
1462         return acer_gsensor_init();
1463 }
1464
1465 static int acer_gsensor_event(void)
1466 {
1467         acpi_status status;
1468         struct acpi_buffer output;
1469         union acpi_object out_obj[5];
1470
1471         if (!has_cap(ACER_CAP_ACCEL))
1472                 return -1;
1473
1474         output.length = sizeof(out_obj);
1475         output.pointer = out_obj;
1476
1477         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1478         if (ACPI_FAILURE(status))
1479                 return -1;
1480
1481         if (out_obj->package.count != 4)
1482                 return -1;
1483
1484         input_report_abs(acer_wmi_accel_dev, ABS_X,
1485                 (s16)out_obj->package.elements[0].integer.value);
1486         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1487                 (s16)out_obj->package.elements[1].integer.value);
1488         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1489                 (s16)out_obj->package.elements[2].integer.value);
1490         input_sync(acer_wmi_accel_dev);
1491         return 0;
1492 }
1493
1494 /*
1495  * Rfkill devices
1496  */
1497 static void acer_rfkill_update(struct work_struct *ignored);
1498 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1499 static void acer_rfkill_update(struct work_struct *ignored)
1500 {
1501         u32 state;
1502         acpi_status status;
1503
1504         if (has_cap(ACER_CAP_WIRELESS)) {
1505                 status = get_u32(&state, ACER_CAP_WIRELESS);
1506                 if (ACPI_SUCCESS(status)) {
1507                         if (quirks->wireless == 3)
1508                                 rfkill_set_hw_state(wireless_rfkill, !state);
1509                         else
1510                                 rfkill_set_sw_state(wireless_rfkill, !state);
1511                 }
1512         }
1513
1514         if (has_cap(ACER_CAP_BLUETOOTH)) {
1515                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1516                 if (ACPI_SUCCESS(status))
1517                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1518         }
1519
1520         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1521                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1522                 if (ACPI_SUCCESS(status))
1523                         rfkill_set_sw_state(threeg_rfkill, !state);
1524         }
1525
1526         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1527 }
1528
1529 static int acer_rfkill_set(void *data, bool blocked)
1530 {
1531         acpi_status status;
1532         u32 cap = (unsigned long)data;
1533
1534         if (rfkill_inited) {
1535                 status = set_u32(!blocked, cap);
1536                 if (ACPI_FAILURE(status))
1537                         return -ENODEV;
1538         }
1539
1540         return 0;
1541 }
1542
1543 static const struct rfkill_ops acer_rfkill_ops = {
1544         .set_block = acer_rfkill_set,
1545 };
1546
1547 static struct rfkill *acer_rfkill_register(struct device *dev,
1548                                            enum rfkill_type type,
1549                                            char *name, u32 cap)
1550 {
1551         int err;
1552         struct rfkill *rfkill_dev;
1553         u32 state;
1554         acpi_status status;
1555
1556         rfkill_dev = rfkill_alloc(name, dev, type,
1557                                   &acer_rfkill_ops,
1558                                   (void *)(unsigned long)cap);
1559         if (!rfkill_dev)
1560                 return ERR_PTR(-ENOMEM);
1561
1562         status = get_u32(&state, cap);
1563
1564         err = rfkill_register(rfkill_dev);
1565         if (err) {
1566                 rfkill_destroy(rfkill_dev);
1567                 return ERR_PTR(err);
1568         }
1569
1570         if (ACPI_SUCCESS(status))
1571                 rfkill_set_sw_state(rfkill_dev, !state);
1572
1573         return rfkill_dev;
1574 }
1575
1576 static int acer_rfkill_init(struct device *dev)
1577 {
1578         int err;
1579
1580         if (has_cap(ACER_CAP_WIRELESS)) {
1581                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1582                         "acer-wireless", ACER_CAP_WIRELESS);
1583                 if (IS_ERR(wireless_rfkill)) {
1584                         err = PTR_ERR(wireless_rfkill);
1585                         goto error_wireless;
1586                 }
1587         }
1588
1589         if (has_cap(ACER_CAP_BLUETOOTH)) {
1590                 bluetooth_rfkill = acer_rfkill_register(dev,
1591                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1592                         ACER_CAP_BLUETOOTH);
1593                 if (IS_ERR(bluetooth_rfkill)) {
1594                         err = PTR_ERR(bluetooth_rfkill);
1595                         goto error_bluetooth;
1596                 }
1597         }
1598
1599         if (has_cap(ACER_CAP_THREEG)) {
1600                 threeg_rfkill = acer_rfkill_register(dev,
1601                         RFKILL_TYPE_WWAN, "acer-threeg",
1602                         ACER_CAP_THREEG);
1603                 if (IS_ERR(threeg_rfkill)) {
1604                         err = PTR_ERR(threeg_rfkill);
1605                         goto error_threeg;
1606                 }
1607         }
1608
1609         rfkill_inited = true;
1610
1611         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1612             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1613                 schedule_delayed_work(&acer_rfkill_work,
1614                         round_jiffies_relative(HZ));
1615
1616         return 0;
1617
1618 error_threeg:
1619         if (has_cap(ACER_CAP_BLUETOOTH)) {
1620                 rfkill_unregister(bluetooth_rfkill);
1621                 rfkill_destroy(bluetooth_rfkill);
1622         }
1623 error_bluetooth:
1624         if (has_cap(ACER_CAP_WIRELESS)) {
1625                 rfkill_unregister(wireless_rfkill);
1626                 rfkill_destroy(wireless_rfkill);
1627         }
1628 error_wireless:
1629         return err;
1630 }
1631
1632 static void acer_rfkill_exit(void)
1633 {
1634         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1635             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1636                 cancel_delayed_work_sync(&acer_rfkill_work);
1637
1638         if (has_cap(ACER_CAP_WIRELESS)) {
1639                 rfkill_unregister(wireless_rfkill);
1640                 rfkill_destroy(wireless_rfkill);
1641         }
1642
1643         if (has_cap(ACER_CAP_BLUETOOTH)) {
1644                 rfkill_unregister(bluetooth_rfkill);
1645                 rfkill_destroy(bluetooth_rfkill);
1646         }
1647
1648         if (has_cap(ACER_CAP_THREEG)) {
1649                 rfkill_unregister(threeg_rfkill);
1650                 rfkill_destroy(threeg_rfkill);
1651         }
1652         return;
1653 }
1654
1655 /*
1656  * sysfs interface
1657  */
1658 static ssize_t show_bool_threeg(struct device *dev,
1659         struct device_attribute *attr, char *buf)
1660 {
1661         u32 result; \
1662         acpi_status status;
1663
1664         pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1665                 current->comm);
1666         status = get_u32(&result, ACER_CAP_THREEG);
1667         if (ACPI_SUCCESS(status))
1668                 return sprintf(buf, "%u\n", result);
1669         return sprintf(buf, "Read error\n");
1670 }
1671
1672 static ssize_t set_bool_threeg(struct device *dev,
1673         struct device_attribute *attr, const char *buf, size_t count)
1674 {
1675         u32 tmp = simple_strtoul(buf, NULL, 10);
1676         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1677         pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1678                 current->comm);
1679         if (ACPI_FAILURE(status))
1680                 return -EINVAL;
1681         return count;
1682 }
1683 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1684         set_bool_threeg);
1685
1686 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1687         char *buf)
1688 {
1689         pr_info("This interface sysfs will be removed in 2012 - used by: %s\n",
1690                 current->comm);
1691         switch (interface->type) {
1692         case ACER_AMW0:
1693                 return sprintf(buf, "AMW0\n");
1694         case ACER_AMW0_V2:
1695                 return sprintf(buf, "AMW0 v2\n");
1696         case ACER_WMID:
1697                 return sprintf(buf, "WMID\n");
1698         case ACER_WMID_v2:
1699                 return sprintf(buf, "WMID v2\n");
1700         default:
1701                 return sprintf(buf, "Error!\n");
1702         }
1703 }
1704
1705 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1706
1707 static void acer_wmi_notify(u32 value, void *context)
1708 {
1709         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1710         union acpi_object *obj;
1711         struct event_return_value return_value;
1712         acpi_status status;
1713         u16 device_state;
1714         const struct key_entry *key;
1715         u32 scancode;
1716
1717         status = wmi_get_event_data(value, &response);
1718         if (status != AE_OK) {
1719                 pr_warn("bad event status 0x%x\n", status);
1720                 return;
1721         }
1722
1723         obj = (union acpi_object *)response.pointer;
1724
1725         if (!obj)
1726                 return;
1727         if (obj->type != ACPI_TYPE_BUFFER) {
1728                 pr_warn("Unknown response received %d\n", obj->type);
1729                 kfree(obj);
1730                 return;
1731         }
1732         if (obj->buffer.length != 8) {
1733                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1734                 kfree(obj);
1735                 return;
1736         }
1737
1738         return_value = *((struct event_return_value *)obj->buffer.pointer);
1739         kfree(obj);
1740
1741         switch (return_value.function) {
1742         case WMID_HOTKEY_EVENT:
1743                 device_state = return_value.device_state;
1744                 pr_debug("device state: 0x%x\n", device_state);
1745
1746                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1747                                                         return_value.key_num);
1748                 if (!key) {
1749                         pr_warn("Unknown key number - 0x%x\n",
1750                                 return_value.key_num);
1751                 } else {
1752                         scancode = return_value.key_num;
1753                         switch (key->keycode) {
1754                         case KEY_WLAN:
1755                         case KEY_BLUETOOTH:
1756                                 if (has_cap(ACER_CAP_WIRELESS))
1757                                         rfkill_set_sw_state(wireless_rfkill,
1758                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1759                                 if (has_cap(ACER_CAP_THREEG))
1760                                         rfkill_set_sw_state(threeg_rfkill,
1761                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1762                                 if (has_cap(ACER_CAP_BLUETOOTH))
1763                                         rfkill_set_sw_state(bluetooth_rfkill,
1764                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1765                                 break;
1766                         case KEY_TOUCHPAD_TOGGLE:
1767                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1768                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1769                         }
1770                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1771                 }
1772                 break;
1773         case WMID_ACCEL_EVENT:
1774                 acer_gsensor_event();
1775                 break;
1776         default:
1777                 pr_warn("Unknown function number - %d - %d\n",
1778                         return_value.function, return_value.key_num);
1779                 break;
1780         }
1781 }
1782
1783 static acpi_status
1784 wmid3_set_lm_mode(struct lm_input_params *params,
1785                   struct lm_return_value *return_value)
1786 {
1787         acpi_status status;
1788         union acpi_object *obj;
1789
1790         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1791         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1792
1793         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1794         if (ACPI_FAILURE(status))
1795                 return status;
1796
1797         obj = output.pointer;
1798
1799         if (!obj)
1800                 return AE_ERROR;
1801         else if (obj->type != ACPI_TYPE_BUFFER) {
1802                 kfree(obj);
1803                 return AE_ERROR;
1804         }
1805         if (obj->buffer.length != 4) {
1806                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1807                 kfree(obj);
1808                 return AE_ERROR;
1809         }
1810
1811         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1812         kfree(obj);
1813
1814         return status;
1815 }
1816
1817 static int acer_wmi_enable_ec_raw(void)
1818 {
1819         struct lm_return_value return_value;
1820         acpi_status status;
1821         struct lm_input_params params = {
1822                 .function_num = 0x1,
1823                 .commun_devices = 0xFFFF,
1824                 .devices = 0xFFFF,
1825                 .lm_status = 0x00,            /* Launch Manager Deactive */
1826         };
1827
1828         status = wmid3_set_lm_mode(&params, &return_value);
1829
1830         if (return_value.error_code || return_value.ec_return_value)
1831                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1832                         return_value.error_code,
1833                         return_value.ec_return_value);
1834         else
1835                 pr_info("Enabled EC raw mode\n");
1836
1837         return status;
1838 }
1839
1840 static int acer_wmi_enable_lm(void)
1841 {
1842         struct lm_return_value return_value;
1843         acpi_status status;
1844         struct lm_input_params params = {
1845                 .function_num = 0x1,
1846                 .commun_devices = 0xFFFF,
1847                 .devices = 0xFFFF,
1848                 .lm_status = 0x01,            /* Launch Manager Active */
1849         };
1850
1851         status = wmid3_set_lm_mode(&params, &return_value);
1852
1853         if (return_value.error_code || return_value.ec_return_value)
1854                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1855                         return_value.error_code,
1856                         return_value.ec_return_value);
1857
1858         return status;
1859 }
1860
1861 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1862                                                 void *ctx, void **retval)
1863 {
1864         *(acpi_handle *)retval = ah;
1865         return AE_OK;
1866 }
1867
1868 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1869                                         acpi_handle *ah)
1870 {
1871         acpi_status status;
1872         acpi_handle handle;
1873
1874         BUG_ON(!name || !ah);
1875
1876         handle = NULL;
1877         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1878                                         (void *)name, &handle);
1879
1880         if (ACPI_SUCCESS(status)) {
1881                 *ah = handle;
1882                 return 0;
1883         } else {
1884                 return -ENODEV;
1885         }
1886 }
1887
1888 static int __init acer_wmi_accel_setup(void)
1889 {
1890         int err;
1891
1892         err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1893         if (err)
1894                 return err;
1895
1896         interface->capability |= ACER_CAP_ACCEL;
1897
1898         acer_wmi_accel_dev = input_allocate_device();
1899         if (!acer_wmi_accel_dev)
1900                 return -ENOMEM;
1901
1902         acer_wmi_accel_dev->open = acer_gsensor_open;
1903
1904         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1905         acer_wmi_accel_dev->phys = "wmi/input1";
1906         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1907         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1908         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1909         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1910         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1911
1912         err = input_register_device(acer_wmi_accel_dev);
1913         if (err)
1914                 goto err_free_dev;
1915
1916         return 0;
1917
1918 err_free_dev:
1919         input_free_device(acer_wmi_accel_dev);
1920         return err;
1921 }
1922
1923 static void acer_wmi_accel_destroy(void)
1924 {
1925         input_unregister_device(acer_wmi_accel_dev);
1926 }
1927
1928 static int __init acer_wmi_input_setup(void)
1929 {
1930         acpi_status status;
1931         int err;
1932
1933         acer_wmi_input_dev = input_allocate_device();
1934         if (!acer_wmi_input_dev)
1935                 return -ENOMEM;
1936
1937         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1938         acer_wmi_input_dev->phys = "wmi/input0";
1939         acer_wmi_input_dev->id.bustype = BUS_HOST;
1940
1941         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1942         if (err)
1943                 goto err_free_dev;
1944
1945         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1946                                                 acer_wmi_notify, NULL);
1947         if (ACPI_FAILURE(status)) {
1948                 err = -EIO;
1949                 goto err_free_keymap;
1950         }
1951
1952         err = input_register_device(acer_wmi_input_dev);
1953         if (err)
1954                 goto err_uninstall_notifier;
1955
1956         return 0;
1957
1958 err_uninstall_notifier:
1959         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1960 err_free_keymap:
1961         sparse_keymap_free(acer_wmi_input_dev);
1962 err_free_dev:
1963         input_free_device(acer_wmi_input_dev);
1964         return err;
1965 }
1966
1967 static void acer_wmi_input_destroy(void)
1968 {
1969         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1970         sparse_keymap_free(acer_wmi_input_dev);
1971         input_unregister_device(acer_wmi_input_dev);
1972 }
1973
1974 /*
1975  * debugfs functions
1976  */
1977 static u32 get_wmid_devices(void)
1978 {
1979         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1980         union acpi_object *obj;
1981         acpi_status status;
1982         u32 devices = 0;
1983
1984         status = wmi_query_block(WMID_GUID2, 1, &out);
1985         if (ACPI_FAILURE(status))
1986                 return 0;
1987
1988         obj = (union acpi_object *) out.pointer;
1989         if (obj) {
1990                 if (obj->type == ACPI_TYPE_BUFFER &&
1991                         (obj->buffer.length == sizeof(u32) ||
1992                         obj->buffer.length == sizeof(u64))) {
1993                         devices = *((u32 *) obj->buffer.pointer);
1994                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1995                         devices = (u32) obj->integer.value;
1996                 }
1997         }
1998
1999         kfree(out.pointer);
2000         return devices;
2001 }
2002
2003 /*
2004  * Platform device
2005  */
2006 static int acer_platform_probe(struct platform_device *device)
2007 {
2008         int err;
2009
2010         if (has_cap(ACER_CAP_MAILLED)) {
2011                 err = acer_led_init(&device->dev);
2012                 if (err)
2013                         goto error_mailled;
2014         }
2015
2016         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2017                 err = acer_backlight_init(&device->dev);
2018                 if (err)
2019                         goto error_brightness;
2020         }
2021
2022         err = acer_rfkill_init(&device->dev);
2023         if (err)
2024                 goto error_rfkill;
2025
2026         return err;
2027
2028 error_rfkill:
2029         if (has_cap(ACER_CAP_BRIGHTNESS))
2030                 acer_backlight_exit();
2031 error_brightness:
2032         if (has_cap(ACER_CAP_MAILLED))
2033                 acer_led_exit();
2034 error_mailled:
2035         return err;
2036 }
2037
2038 static int acer_platform_remove(struct platform_device *device)
2039 {
2040         if (has_cap(ACER_CAP_MAILLED))
2041                 acer_led_exit();
2042         if (has_cap(ACER_CAP_BRIGHTNESS))
2043                 acer_backlight_exit();
2044
2045         acer_rfkill_exit();
2046         return 0;
2047 }
2048
2049 static int acer_suspend(struct device *dev)
2050 {
2051         u32 value;
2052         struct acer_data *data = &interface->data;
2053
2054         if (!data)
2055                 return -ENOMEM;
2056
2057         if (has_cap(ACER_CAP_MAILLED)) {
2058                 get_u32(&value, ACER_CAP_MAILLED);
2059                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2060                 data->mailled = value;
2061         }
2062
2063         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2064                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2065                 data->brightness = value;
2066         }
2067
2068         return 0;
2069 }
2070
2071 static int acer_resume(struct device *dev)
2072 {
2073         struct acer_data *data = &interface->data;
2074
2075         if (!data)
2076                 return -ENOMEM;
2077
2078         if (has_cap(ACER_CAP_MAILLED))
2079                 set_u32(data->mailled, ACER_CAP_MAILLED);
2080
2081         if (has_cap(ACER_CAP_BRIGHTNESS))
2082                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2083
2084         if (has_cap(ACER_CAP_ACCEL))
2085                 acer_gsensor_init();
2086
2087         return 0;
2088 }
2089
2090 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2091
2092 static void acer_platform_shutdown(struct platform_device *device)
2093 {
2094         struct acer_data *data = &interface->data;
2095
2096         if (!data)
2097                 return;
2098
2099         if (has_cap(ACER_CAP_MAILLED))
2100                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2101 }
2102
2103 static struct platform_driver acer_platform_driver = {
2104         .driver = {
2105                 .name = "acer-wmi",
2106                 .owner = THIS_MODULE,
2107                 .pm = &acer_pm,
2108         },
2109         .probe = acer_platform_probe,
2110         .remove = acer_platform_remove,
2111         .shutdown = acer_platform_shutdown,
2112 };
2113
2114 static struct platform_device *acer_platform_device;
2115
2116 static int remove_sysfs(struct platform_device *device)
2117 {
2118         if (has_cap(ACER_CAP_THREEG))
2119                 device_remove_file(&device->dev, &dev_attr_threeg);
2120
2121         device_remove_file(&device->dev, &dev_attr_interface);
2122
2123         return 0;
2124 }
2125
2126 static int create_sysfs(void)
2127 {
2128         int retval = -ENOMEM;
2129
2130         if (has_cap(ACER_CAP_THREEG)) {
2131                 retval = device_create_file(&acer_platform_device->dev,
2132                         &dev_attr_threeg);
2133                 if (retval)
2134                         goto error_sysfs;
2135         }
2136
2137         retval = device_create_file(&acer_platform_device->dev,
2138                 &dev_attr_interface);
2139         if (retval)
2140                 goto error_sysfs;
2141
2142         return 0;
2143
2144 error_sysfs:
2145                 remove_sysfs(acer_platform_device);
2146         return retval;
2147 }
2148
2149 static void remove_debugfs(void)
2150 {
2151         debugfs_remove(interface->debug.devices);
2152         debugfs_remove(interface->debug.root);
2153 }
2154
2155 static int create_debugfs(void)
2156 {
2157         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2158         if (!interface->debug.root) {
2159                 pr_err("Failed to create debugfs directory");
2160                 return -ENOMEM;
2161         }
2162
2163         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2164                                         interface->debug.root,
2165                                         &interface->debug.wmid_devices);
2166         if (!interface->debug.devices)
2167                 goto error_debugfs;
2168
2169         return 0;
2170
2171 error_debugfs:
2172         remove_debugfs();
2173         return -ENOMEM;
2174 }
2175
2176 static int __init acer_wmi_init(void)
2177 {
2178         int err;
2179
2180         pr_info("Acer Laptop ACPI-WMI Extras\n");
2181
2182         if (dmi_check_system(acer_blacklist)) {
2183                 pr_info("Blacklisted hardware detected - not loading\n");
2184                 return -ENODEV;
2185         }
2186
2187         find_quirks();
2188
2189         /*
2190          * Detect which ACPI-WMI interface we're using.
2191          */
2192         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2193                 interface = &AMW0_V2_interface;
2194
2195         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2196                 interface = &wmid_interface;
2197
2198         if (wmi_has_guid(WMID_GUID3))
2199                 interface = &wmid_v2_interface;
2200
2201         if (interface)
2202                 dmi_walk(type_aa_dmi_decode, NULL);
2203
2204         if (wmi_has_guid(WMID_GUID2) && interface) {
2205                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2206                         pr_err("Unable to detect available WMID devices\n");
2207                         return -ENODEV;
2208                 }
2209                 /* WMID always provides brightness methods */
2210                 interface->capability |= ACER_CAP_BRIGHTNESS;
2211         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2212                 pr_err("No WMID device detection method found\n");
2213                 return -ENODEV;
2214         }
2215
2216         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2217                 interface = &AMW0_interface;
2218
2219                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2220                         pr_err("Unable to detect available AMW0 devices\n");
2221                         return -ENODEV;
2222                 }
2223         }
2224
2225         if (wmi_has_guid(AMW0_GUID1))
2226                 AMW0_find_mailled();
2227
2228         if (!interface) {
2229                 pr_err("No or unsupported WMI interface, unable to load\n");
2230                 return -ENODEV;
2231         }
2232
2233         set_quirks();
2234
2235         if (dmi_check_system(video_vendor_dmi_table))
2236                 acpi_video_dmi_promote_vendor();
2237         if (acpi_video_backlight_support()) {
2238                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2239                 pr_info("Brightness must be controlled by acpi video driver\n");
2240         } else {
2241                 pr_info("Disabling ACPI video driver\n");
2242                 acpi_video_unregister();
2243         }
2244
2245         if (wmi_has_guid(WMID_GUID3)) {
2246                 if (ec_raw_mode) {
2247                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2248                                 pr_err("Cannot enable EC raw mode\n");
2249                                 return -ENODEV;
2250                         }
2251                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2252                         pr_err("Cannot enable Launch Manager mode\n");
2253                         return -ENODEV;
2254                 }
2255         } else if (ec_raw_mode) {
2256                 pr_info("No WMID EC raw mode enable method\n");
2257         }
2258
2259         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2260                 err = acer_wmi_input_setup();
2261                 if (err)
2262                         return err;
2263         }
2264
2265         acer_wmi_accel_setup();
2266
2267         err = platform_driver_register(&acer_platform_driver);
2268         if (err) {
2269                 pr_err("Unable to register platform driver\n");
2270                 goto error_platform_register;
2271         }
2272
2273         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2274         if (!acer_platform_device) {
2275                 err = -ENOMEM;
2276                 goto error_device_alloc;
2277         }
2278
2279         err = platform_device_add(acer_platform_device);
2280         if (err)
2281                 goto error_device_add;
2282
2283         err = create_sysfs();
2284         if (err)
2285                 goto error_create_sys;
2286
2287         if (wmi_has_guid(WMID_GUID2)) {
2288                 interface->debug.wmid_devices = get_wmid_devices();
2289                 err = create_debugfs();
2290                 if (err)
2291                         goto error_create_debugfs;
2292         }
2293
2294         /* Override any initial settings with values from the commandline */
2295         acer_commandline_init();
2296
2297         return 0;
2298
2299 error_create_debugfs:
2300         remove_sysfs(acer_platform_device);
2301 error_create_sys:
2302         platform_device_del(acer_platform_device);
2303 error_device_add:
2304         platform_device_put(acer_platform_device);
2305 error_device_alloc:
2306         platform_driver_unregister(&acer_platform_driver);
2307 error_platform_register:
2308         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2309                 acer_wmi_input_destroy();
2310         if (has_cap(ACER_CAP_ACCEL))
2311                 acer_wmi_accel_destroy();
2312
2313         return err;
2314 }
2315
2316 static void __exit acer_wmi_exit(void)
2317 {
2318         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2319                 acer_wmi_input_destroy();
2320
2321         if (has_cap(ACER_CAP_ACCEL))
2322                 acer_wmi_accel_destroy();
2323
2324         remove_sysfs(acer_platform_device);
2325         remove_debugfs();
2326         platform_device_unregister(acer_platform_device);
2327         platform_driver_unregister(&acer_platform_driver);
2328
2329         pr_info("Acer Laptop WMI Extras unloaded\n");
2330         return;
2331 }
2332
2333 module_init(acer_wmi_init);
2334 module_exit(acer_wmi_exit);