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, 0x27, {KEY_HELP} },
 109         {KE_KEY, 0x29, {KEY_PROG3} },    /* P_Key for TM8372 */
 110         {KE_IGNORE, 0x41, {KEY_MUTE} },
 111         {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
 112         {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
 113         {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
 114         {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
 115         {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
 116         {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
 117         {KE_IGNORE, 0x45, {KEY_STOP} },
 118         {KE_IGNORE, 0x50, {KEY_STOP} },
 119         {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
 120         {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
 121         {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
 122         /*
 123          * 0x61 is KEY_SWITCHVIDEOMODE. Usually this is a duplicate input event
 124          * with the "Video Bus" input device events. But sometimes it is not
 125          * a dup. Map it to KEY_UNKNOWN instead of using KE_IGNORE so that
 126          * udev/hwdb can override it on systems where it is not a dup.
 127          */
 128         {KE_KEY, 0x61, {KEY_UNKNOWN} },
 129         {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 130         {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 131         {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
 132         {KE_IGNORE, 0x81, {KEY_SLEEP} },
 133         {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
 134         {KE_IGNORE, 0x84, {KEY_KBDILLUMTOGGLE} }, /* Automatic Keyboard background light toggle */
 135         {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
 136         {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
 137         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 138         {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
 139         {KE_END, 0}
 140 };
 141
 142 static struct input_dev *acer_wmi_input_dev;
 143 static struct input_dev *acer_wmi_accel_dev;
 144
 145 struct event_return_value {
 146         u8 function;
 147         u8 key_num;
 148         u16 device_state;
 149         u32 reserved;
 150 } __attribute__((packed));
 151
 152 /*
 153  * GUID3 Get Device Status device flags
 154  */
 155 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 156 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 157 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 158 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 159 #define ACER_WMID3_GDS_TOUCHPAD         (1<<1)  /* Touchpad */
 160
 161 struct lm_input_params {
 162         u8 function_num;        /* Function Number */
 163         u16 commun_devices;     /* Communication type devices default status */
 164         u16 devices;            /* Other type devices default status */
 165         u8 lm_status;           /* Launch Manager Status */
 166         u16 reserved;
 167 } __attribute__((packed));
 168
 169 struct lm_return_value {
 170         u8 error_code;          /* Error Code */
 171         u8 ec_return_value;     /* EC Return Value */
 172         u16 reserved;
 173 } __attribute__((packed));
 174
 175 struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 176         u8 function_num;        /* Function Number */
 177         u8 hotkey_number;       /* Hotkey Number */
 178         u16 devices;            /* Set Device */
 179         u8 volume_value;        /* Volume Value */
 180 } __attribute__((packed));
 181
 182 struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 183         u8 function_num;        /* Function Number */
 184         u8 hotkey_number;       /* Hotkey Number */
 185         u16 devices;            /* Get Device */
 186 } __attribute__((packed));
 187
 188 struct wmid3_gds_return_value { /* Get Device Status return value*/
 189         u8 error_code;          /* Error Code */
 190         u8 ec_return_value;     /* EC Return Value */
 191         u16 devices;            /* Current Device Status */
 192         u32 reserved;
 193 } __attribute__((packed));
 194
 195 struct hotkey_function_type_aa {
 196         u8 type;
 197         u8 length;
 198         u16 handle;
 199         u16 commun_func_bitmap;
 200         u16 application_func_bitmap;
 201         u16 media_func_bitmap;
 202         u16 display_func_bitmap;
 203         u16 others_func_bitmap;
 204         u8 commun_fn_key_number;
 205 } __attribute__((packed));
 206
 207 /*
 208  * Interface capability flags
 209  */
 210 #define ACER_CAP_MAILLED                (1<<0)
 211 #define ACER_CAP_WIRELESS               (1<<1)
 212 #define ACER_CAP_BLUETOOTH              (1<<2)
 213 #define ACER_CAP_BRIGHTNESS             (1<<3)
 214 #define ACER_CAP_THREEG                 (1<<4)
 215 #define ACER_CAP_ACCEL                  (1<<5)
 216 #define ACER_CAP_ANY                    (0xFFFFFFFF)
 217
 218 /*
 219  * Interface type flags
 220  */
 221 enum interface_flags {
 222         ACER_AMW0,
 223         ACER_AMW0_V2,
 224         ACER_WMID,
 225         ACER_WMID_v2,
 226 };
 227
 228 #define ACER_DEFAULT_WIRELESS  0
 229 #define ACER_DEFAULT_BLUETOOTH 0
 230 #define ACER_DEFAULT_MAILLED   0
 231 #define ACER_DEFAULT_THREEG    0
 232
 233 static int max_brightness = 0xF;
 234
 235 static int mailled = -1;
 236 static int brightness = -1;
 237 static int threeg = -1;
 238 static int force_series;
 239 static int force_caps = -1;
 240 static bool ec_raw_mode;
 241 static bool has_type_aa;
 242 static u16 commun_func_bitmap;
 243 static u8 commun_fn_key_number;
 244
 245 module_param(mailled, int, 0444);
 246 module_param(brightness, int, 0444);
 247 module_param(threeg, int, 0444);
 248 module_param(force_series, int, 0444);
 249 module_param(force_caps, int, 0444);
 250 module_param(ec_raw_mode, bool, 0444);
 251 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 252 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 253 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 254 MODULE_PARM_DESC(force_series, "Force a different laptop series");
 255 MODULE_PARM_DESC(force_caps, "Force the capability bitmask to this value");
 256 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 257
 258 struct acer_data {
 259         int mailled;
 260         int threeg;
 261         int brightness;
 262 };
 263
 264 struct acer_debug {
 265         struct dentry *root;
 266         struct dentry *devices;
 267         u32 wmid_devices;
 268 };
 269
 270 static struct rfkill *wireless_rfkill;
 271 static struct rfkill *bluetooth_rfkill;
 272 static struct rfkill *threeg_rfkill;
 273 static bool rfkill_inited;
 274
 275 /* Each low-level interface must define at least some of the following */
 276 struct wmi_interface {
 277         /* The WMI device type */
 278         u32 type;
 279
 280         /* The capabilities this interface provides */
 281         u32 capability;
 282
 283         /* Private data for the current interface */
 284         struct acer_data data;
 285
 286         /* debugfs entries associated with this interface */
 287         struct acer_debug debug;
 288 };
 289
 290 /* The static interface pointer, points to the currently detected interface */
 291 static struct wmi_interface *interface;
 292
 293 /*
 294  * Embedded Controller quirks
 295  * Some laptops require us to directly access the EC to either enable or query
 296  * features that are not available through WMI.
 297  */
 298
 299 struct quirk_entry {
 300         u8 wireless;
 301         u8 mailled;
 302         s8 brightness;
 303         u8 bluetooth;
 304 };
 305
 306 static struct quirk_entry *quirks;
 307
 308 static void __init set_quirks(void)
 309 {
 310         if (!interface)
 311                 return;
 312
 313         if (quirks->mailled)
 314                 interface->capability |= ACER_CAP_MAILLED;
 315
 316         if (quirks->brightness)
 317                 interface->capability |= ACER_CAP_BRIGHTNESS;
 318 }
 319
 320 static int __init dmi_matched(const struct dmi_system_id *dmi)
 321 {
 322         quirks = dmi->driver_data;
 323         return 1;
 324 }
 325
 326 static struct quirk_entry quirk_unknown = {
 327 };
 328
 329 static struct quirk_entry quirk_acer_aspire_1520 = {
 330         .brightness = -1,
 331 };
 332
 333 static struct quirk_entry quirk_acer_travelmate_2490 = {
 334         .mailled = 1,
 335 };
 336
 337 /* This AMW0 laptop has no bluetooth */
 338 static struct quirk_entry quirk_medion_md_98300 = {
 339         .wireless = 1,
 340 };
 341
 342 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 343         .wireless = 2,
 344 };
 345
 346 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 347         .wireless = 3,
 348 };
 349
 350 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
 351 static const struct dmi_system_id acer_blacklist[] __initconst = {
 352         {
 353                 .ident = "Acer Aspire One (SSD)",
 354                 .matches = {
 355                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 356                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 357                 },
 358         },
 359         {
 360                 .ident = "Acer Aspire One (HDD)",
 361                 .matches = {
 362                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 363                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 364                 },
 365         },
 366         {}
 367 };
 368
 369 static const struct dmi_system_id amw0_whitelist[] __initconst = {
 370         {
 371                 .ident = "Acer",
 372                 .matches = {
 373                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 374                 },
 375         },
 376         {
 377                 .ident = "Gateway",
 378                 .matches = {
 379                         DMI_MATCH(DMI_SYS_VENDOR, "Gateway"),
 380                 },
 381         },
 382         {
 383                 .ident = "Packard Bell",
 384                 .matches = {
 385                         DMI_MATCH(DMI_SYS_VENDOR, "Packard Bell"),
 386                 },
 387         },
 388         {}
 389 };
 390
 391 /*
 392  * This quirk table is only for Acer/Gateway/Packard Bell family
 393  * that those machines are supported by acer-wmi driver.
 394  */
 395 static const struct dmi_system_id acer_quirks[] __initconst = {
 396         {
 397                 .callback = dmi_matched,
 398                 .ident = "Acer Aspire 1360",
 399                 .matches = {
 400                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 401                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 402                 },
 403                 .driver_data = &quirk_acer_aspire_1520,
 404         },
 405         {
 406                 .callback = dmi_matched,
 407                 .ident = "Acer Aspire 1520",
 408                 .matches = {
 409                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 410                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 411                 },
 412                 .driver_data = &quirk_acer_aspire_1520,
 413         },
 414         {
 415                 .callback = dmi_matched,
 416                 .ident = "Acer Aspire 3100",
 417                 .matches = {
 418                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 419                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 420                 },
 421                 .driver_data = &quirk_acer_travelmate_2490,
 422         },
 423         {
 424                 .callback = dmi_matched,
 425                 .ident = "Acer Aspire 3610",
 426                 .matches = {
 427                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 428                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 429                 },
 430                 .driver_data = &quirk_acer_travelmate_2490,
 431         },
 432         {
 433                 .callback = dmi_matched,
 434                 .ident = "Acer Aspire 5100",
 435                 .matches = {
 436                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 437                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 438                 },
 439                 .driver_data = &quirk_acer_travelmate_2490,
 440         },
 441         {
 442                 .callback = dmi_matched,
 443                 .ident = "Acer Aspire 5610",
 444                 .matches = {
 445                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 446                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 447                 },
 448                 .driver_data = &quirk_acer_travelmate_2490,
 449         },
 450         {
 451                 .callback = dmi_matched,
 452                 .ident = "Acer Aspire 5630",
 453                 .matches = {
 454                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 455                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 456                 },
 457                 .driver_data = &quirk_acer_travelmate_2490,
 458         },
 459         {
 460                 .callback = dmi_matched,
 461                 .ident = "Acer Aspire 5650",
 462                 .matches = {
 463                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 464                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 465                 },
 466                 .driver_data = &quirk_acer_travelmate_2490,
 467         },
 468         {
 469                 .callback = dmi_matched,
 470                 .ident = "Acer Aspire 5680",
 471                 .matches = {
 472                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 473                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 474                 },
 475                 .driver_data = &quirk_acer_travelmate_2490,
 476         },
 477         {
 478                 .callback = dmi_matched,
 479                 .ident = "Acer Aspire 9110",
 480                 .matches = {
 481                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 482                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 483                 },
 484                 .driver_data = &quirk_acer_travelmate_2490,
 485         },
 486         {
 487                 .callback = dmi_matched,
 488                 .ident = "Acer TravelMate 2490",
 489                 .matches = {
 490                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 491                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 492                 },
 493                 .driver_data = &quirk_acer_travelmate_2490,
 494         },
 495         {
 496                 .callback = dmi_matched,
 497                 .ident = "Acer TravelMate 4200",
 498                 .matches = {
 499                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 500                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 501                 },
 502                 .driver_data = &quirk_acer_travelmate_2490,
 503         },
 504         {}
 505 };
 506
 507 /*
 508  * This quirk list is for those non-acer machines that have AMW0_GUID1
 509  * but supported by acer-wmi in past days. Keeping this quirk list here
 510  * is only for backward compatible. Please do not add new machine to
 511  * here anymore. Those non-acer machines should be supported by
 512  * appropriate wmi drivers.
 513  */
 514 static const struct dmi_system_id non_acer_quirks[] __initconst = {
 515         {
 516                 .callback = dmi_matched,
 517                 .ident = "Fujitsu Siemens Amilo Li 1718",
 518                 .matches = {
 519                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 520                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 521                 },
 522                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 523         },
 524         {
 525                 .callback = dmi_matched,
 526                 .ident = "Medion MD 98300",
 527                 .matches = {
 528                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 529                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 530                 },
 531                 .driver_data = &quirk_medion_md_98300,
 532         },
 533         {
 534                 .callback = dmi_matched,
 535                 .ident = "Lenovo Ideapad S205",
 536                 .matches = {
 537                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 538                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 539                 },
 540                 .driver_data = &quirk_lenovo_ideapad_s205,
 541         },
 542         {
 543                 .callback = dmi_matched,
 544                 .ident = "Lenovo Ideapad S205 (Brazos)",
 545                 .matches = {
 546                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 547                         DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 548                 },
 549                 .driver_data = &quirk_lenovo_ideapad_s205,
 550         },
 551         {
 552                 .callback = dmi_matched,
 553                 .ident = "Lenovo 3000 N200",
 554                 .matches = {
 555                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 556                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 557                 },
 558                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 559         },
 560         {
 561                 .callback = dmi_matched,
 562                 .ident = "Lenovo Ideapad S205-10382JG",
 563                 .matches = {
 564                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 565                         DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
 566                 },
 567                 .driver_data = &quirk_lenovo_ideapad_s205,
 568         },
 569         {
 570                 .callback = dmi_matched,
 571                 .ident = "Lenovo Ideapad S205-1038DPG",
 572                 .matches = {
 573                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 574                         DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
 575                 },
 576                 .driver_data = &quirk_lenovo_ideapad_s205,
 577         },
 578         {}
 579 };
 580
 581 static int __init
 582 video_set_backlight_video_vendor(const struct dmi_system_id *d)
 583 {
 584         interface->capability &= ~ACER_CAP_BRIGHTNESS;
 585         pr_info("Brightness must be controlled by generic video driver\n");
 586         return 0;
 587 }
 588
 589 static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
 590         {
 591                 .callback = video_set_backlight_video_vendor,
 592                 .ident = "Acer TravelMate 4750",
 593                 .matches = {
 594                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 595                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 596                 },
 597         },
 598         {
 599                 .callback = video_set_backlight_video_vendor,
 600                 .ident = "Acer Extensa 5235",
 601                 .matches = {
 602                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 603                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 604                 },
 605         },
 606         {
 607                 .callback = video_set_backlight_video_vendor,
 608                 .ident = "Acer TravelMate 5760",
 609                 .matches = {
 610                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 611                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 612                 },
 613         },
 614         {
 615                 .callback = video_set_backlight_video_vendor,
 616                 .ident = "Acer Aspire 5750",
 617                 .matches = {
 618                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 619                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 620                 },
 621         },
 622         {
 623                 .callback = video_set_backlight_video_vendor,
 624                 .ident = "Acer Aspire 5741",
 625                 .matches = {
 626                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 627                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
 628                 },
 629         },
 630         {
 631                 /*
 632                  * Note no video_set_backlight_video_vendor, we must use the
 633                  * acer interface, as there is no native backlight interface.
 634                  */
 635                 .ident = "Acer KAV80",
 636                 .matches = {
 637                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 638                         DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
 639                 },
 640         },
 641         {}
 642 };
 643
 644 /* Find which quirks are needed for a particular vendor/ model pair */
 645 static void __init find_quirks(void)
 646 {
 647         if (!force_series) {
 648                 dmi_check_system(acer_quirks);
 649                 dmi_check_system(non_acer_quirks);
 650         } else if (force_series == 2490) {
 651                 quirks = &quirk_acer_travelmate_2490;
 652         }
 653
 654         if (quirks == NULL)
 655                 quirks = &quirk_unknown;
 656
 657         set_quirks();
 658 }
 659
 660 /*
 661  * General interface convenience methods
 662  */
 663
 664 static bool has_cap(u32 cap)
 665 {
 666         if ((interface->capability & cap) != 0)
 667                 return 1;
 668
 669         return 0;
 670 }
 671
 672 /*
 673  * AMW0 (V1) interface
 674  */
 675 struct wmab_args {
 676         u32 eax;
 677         u32 ebx;
 678         u32 ecx;
 679         u32 edx;
 680 };
 681
 682 struct wmab_ret {
 683         u32 eax;
 684         u32 ebx;
 685         u32 ecx;
 686         u32 edx;
 687         u32 eex;
 688 };
 689
 690 static acpi_status wmab_execute(struct wmab_args *regbuf,
 691 struct acpi_buffer *result)
 692 {
 693         struct acpi_buffer input;
 694         acpi_status status;
 695         input.length = sizeof(struct wmab_args);
 696         input.pointer = (u8 *)regbuf;
 697
 698         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
 699
 700         return status;
 701 }
 702
 703 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 704 {
 705         int err;
 706         u8 result;
 707
 708         switch (cap) {
 709         case ACER_CAP_MAILLED:
 710                 switch (quirks->mailled) {
 711                 default:
 712                         err = ec_read(0xA, &result);
 713                         if (err)
 714                                 return AE_ERROR;
 715                         *value = (result >> 7) & 0x1;
 716                         return AE_OK;
 717                 }
 718                 break;
 719         case ACER_CAP_WIRELESS:
 720                 switch (quirks->wireless) {
 721                 case 1:
 722                         err = ec_read(0x7B, &result);
 723                         if (err)
 724                                 return AE_ERROR;
 725                         *value = result & 0x1;
 726                         return AE_OK;
 727                 case 2:
 728                         err = ec_read(0x71, &result);
 729                         if (err)
 730                                 return AE_ERROR;
 731                         *value = result & 0x1;
 732                         return AE_OK;
 733                 case 3:
 734                         err = ec_read(0x78, &result);
 735                         if (err)
 736                                 return AE_ERROR;
 737                         *value = result & 0x1;
 738                         return AE_OK;
 739                 default:
 740                         err = ec_read(0xA, &result);
 741                         if (err)
 742                                 return AE_ERROR;
 743                         *value = (result >> 2) & 0x1;
 744                         return AE_OK;
 745                 }
 746                 break;
 747         case ACER_CAP_BLUETOOTH:
 748                 switch (quirks->bluetooth) {
 749                 default:
 750                         err = ec_read(0xA, &result);
 751                         if (err)
 752                                 return AE_ERROR;
 753                         *value = (result >> 4) & 0x1;
 754                         return AE_OK;
 755                 }
 756                 break;
 757         case ACER_CAP_BRIGHTNESS:
 758                 switch (quirks->brightness) {
 759                 default:
 760                         err = ec_read(0x83, &result);
 761                         if (err)
 762                                 return AE_ERROR;
 763                         *value = result;
 764                         return AE_OK;
 765                 }
 766                 break;
 767         default:
 768                 return AE_ERROR;
 769         }
 770         return AE_OK;
 771 }
 772
 773 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 774 {
 775         struct wmab_args args;
 776
 777         args.eax = ACER_AMW0_WRITE;
 778         args.ebx = value ? (1<<8) : 0;
 779         args.ecx = args.edx = 0;
 780
 781         switch (cap) {
 782         case ACER_CAP_MAILLED:
 783                 if (value > 1)
 784                         return AE_BAD_PARAMETER;
 785                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 786                 break;
 787         case ACER_CAP_WIRELESS:
 788                 if (value > 1)
 789                         return AE_BAD_PARAMETER;
 790                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 791                 break;
 792         case ACER_CAP_BLUETOOTH:
 793                 if (value > 1)
 794                         return AE_BAD_PARAMETER;
 795                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 796                 break;
 797         case ACER_CAP_BRIGHTNESS:
 798                 if (value > max_brightness)
 799                         return AE_BAD_PARAMETER;
 800                 switch (quirks->brightness) {
 801                 default:
 802                         return ec_write(0x83, value);
 803                         break;
 804                 }
 805         default:
 806                 return AE_ERROR;
 807         }
 808
 809         /* Actually do the set */
 810         return wmab_execute(&args, NULL);
 811 }
 812
 813 static acpi_status __init AMW0_find_mailled(void)
 814 {
 815         struct wmab_args args;
 816         struct wmab_ret ret;
 817         acpi_status status = AE_OK;
 818         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 819         union acpi_object *obj;
 820
 821         args.eax = 0x86;
 822         args.ebx = args.ecx = args.edx = 0;
 823
 824         status = wmab_execute(&args, &out);
 825         if (ACPI_FAILURE(status))
 826                 return status;
 827
 828         obj = (union acpi_object *) out.pointer;
 829         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 830         obj->buffer.length == sizeof(struct wmab_ret)) {
 831                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 832         } else {
 833                 kfree(out.pointer);
 834                 return AE_ERROR;
 835         }
 836
 837         if (ret.eex & 0x1)
 838                 interface->capability |= ACER_CAP_MAILLED;
 839
 840         kfree(out.pointer);
 841
 842         return AE_OK;
 843 }
 844
 845 static const struct acpi_device_id norfkill_ids[] __initconst = {
 846         { "VPC2004", 0},
 847         { "IBM0068", 0},
 848         { "LEN0068", 0},
 849         { "SNY5001", 0},        /* sony-laptop in charge */
 850         { "HPQ6601", 0},
 851         { "", 0},
 852 };
 853
 854 static int __init AMW0_set_cap_acpi_check_device(void)
 855 {
 856         const struct acpi_device_id *id;
 857
 858         for (id = norfkill_ids; id->id[0]; id++)
 859                 if (acpi_dev_found(id->id))
 860                         return true;
 861
 862         return false;
 863 }
 864
 865 static acpi_status __init AMW0_set_capabilities(void)
 866 {
 867         struct wmab_args args;
 868         struct wmab_ret ret;
 869         acpi_status status;
 870         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 871         union acpi_object *obj;
 872
 873         /*
 874          * On laptops with this strange GUID (non Acer), normal probing doesn't
 875          * work.
 876          */
 877         if (wmi_has_guid(AMW0_GUID2)) {
 878                 if ((quirks != &quirk_unknown) ||
 879                     !AMW0_set_cap_acpi_check_device())
 880                         interface->capability |= ACER_CAP_WIRELESS;
 881                 return AE_OK;
 882         }
 883
 884         args.eax = ACER_AMW0_WRITE;
 885         args.ecx = args.edx = 0;
 886
 887         args.ebx = 0xa2 << 8;
 888         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 889
 890         status = wmab_execute(&args, &out);
 891         if (ACPI_FAILURE(status))
 892                 return status;
 893
 894         obj = out.pointer;
 895         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 896         obj->buffer.length == sizeof(struct wmab_ret)) {
 897                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 898         } else {
 899                 status = AE_ERROR;
 900                 goto out;
 901         }
 902
 903         if (ret.eax & 0x1)
 904                 interface->capability |= ACER_CAP_WIRELESS;
 905
 906         args.ebx = 2 << 8;
 907         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 908
 909         /*
 910          * It's ok to use existing buffer for next wmab_execute call.
 911          * But we need to kfree(out.pointer) if next wmab_execute fail.
 912          */
 913         status = wmab_execute(&args, &out);
 914         if (ACPI_FAILURE(status))
 915                 goto out;
 916
 917         obj = (union acpi_object *) out.pointer;
 918         if (obj && obj->type == ACPI_TYPE_BUFFER
 919         && obj->buffer.length == sizeof(struct wmab_ret)) {
 920                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 921         } else {
 922                 status = AE_ERROR;
 923                 goto out;
 924         }
 925
 926         if (ret.eax & 0x1)
 927                 interface->capability |= ACER_CAP_BLUETOOTH;
 928
 929         /*
 930          * This appears to be safe to enable, since all Wistron based laptops
 931          * appear to use the same EC register for brightness, even if they
 932          * differ for wireless, etc
 933          */
 934         if (quirks->brightness >= 0)
 935                 interface->capability |= ACER_CAP_BRIGHTNESS;
 936
 937         status = AE_OK;
 938 out:
 939         kfree(out.pointer);
 940         return status;
 941 }
 942
 943 static struct wmi_interface AMW0_interface = {
 944         .type = ACER_AMW0,
 945 };
 946
 947 static struct wmi_interface AMW0_V2_interface = {
 948         .type = ACER_AMW0_V2,
 949 };
 950
 951 /*
 952  * New interface (The WMID interface)
 953  */
 954 static acpi_status
 955 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 956 {
 957         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 958         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 959         union acpi_object *obj;
 960         u32 tmp = 0;
 961         acpi_status status;
 962
 963         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 964
 965         if (ACPI_FAILURE(status))
 966                 return status;
 967
 968         obj = (union acpi_object *) result.pointer;
 969         if (obj) {
 970                 if (obj->type == ACPI_TYPE_BUFFER &&
 971                         (obj->buffer.length == sizeof(u32) ||
 972                         obj->buffer.length == sizeof(u64))) {
 973                         tmp = *((u32 *) obj->buffer.pointer);
 974                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 975                         tmp = (u32) obj->integer.value;
 976                 }
 977         }
 978
 979         if (out)
 980                 *out = tmp;
 981
 982         kfree(result.pointer);
 983
 984         return status;
 985 }
 986
 987 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 988 {
 989         acpi_status status;
 990         u8 tmp;
 991         u32 result, method_id = 0;
 992
 993         switch (cap) {
 994         case ACER_CAP_WIRELESS:
 995                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 996                 break;
 997         case ACER_CAP_BLUETOOTH:
 998                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 999                 break;
1000         case ACER_CAP_BRIGHTNESS:
1001                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
1002                 break;
1003         case ACER_CAP_THREEG:
1004                 method_id = ACER_WMID_GET_THREEG_METHODID;
1005                 break;
1006         case ACER_CAP_MAILLED:
1007                 if (quirks->mailled == 1) {
1008                         ec_read(0x9f, &tmp);
1009                         *value = tmp & 0x1;
1010                         return 0;
1011                 }
1012         default:
1013                 return AE_ERROR;
1014         }
1015         status = WMI_execute_u32(method_id, 0, &result);
1016
1017         if (ACPI_SUCCESS(status))
1018                 *value = (u8)result;
1019
1020         return status;
1021 }
1022
1023 static acpi_status WMID_set_u32(u32 value, u32 cap)
1024 {
1025         u32 method_id = 0;
1026         char param;
1027
1028         switch (cap) {
1029         case ACER_CAP_BRIGHTNESS:
1030                 if (value > max_brightness)
1031                         return AE_BAD_PARAMETER;
1032                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
1033                 break;
1034         case ACER_CAP_WIRELESS:
1035                 if (value > 1)
1036                         return AE_BAD_PARAMETER;
1037                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
1038                 break;
1039         case ACER_CAP_BLUETOOTH:
1040                 if (value > 1)
1041                         return AE_BAD_PARAMETER;
1042                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
1043                 break;
1044         case ACER_CAP_THREEG:
1045                 if (value > 1)
1046                         return AE_BAD_PARAMETER;
1047                 method_id = ACER_WMID_SET_THREEG_METHODID;
1048                 break;
1049         case ACER_CAP_MAILLED:
1050                 if (value > 1)
1051                         return AE_BAD_PARAMETER;
1052                 if (quirks->mailled == 1) {
1053                         param = value ? 0x92 : 0x93;
1054                         i8042_lock_chip();
1055                         i8042_command(&param, 0x1059);
1056                         i8042_unlock_chip();
1057                         return 0;
1058                 }
1059                 break;
1060         default:
1061                 return AE_ERROR;
1062         }
1063         return WMI_execute_u32(method_id, (u32)value, NULL);
1064 }
1065
1066 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1067 {
1068         struct wmid3_gds_return_value return_value;
1069         acpi_status status;
1070         union acpi_object *obj;
1071         struct wmid3_gds_get_input_param params = {
1072                 .function_num = 0x1,
1073                 .hotkey_number = commun_fn_key_number,
1074                 .devices = device,
1075         };
1076         struct acpi_buffer input = {
1077                 sizeof(struct wmid3_gds_get_input_param),
1078                 &params
1079         };
1080         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1081
1082         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1083         if (ACPI_FAILURE(status))
1084                 return status;
1085
1086         obj = output.pointer;
1087
1088         if (!obj)
1089                 return AE_ERROR;
1090         else if (obj->type != ACPI_TYPE_BUFFER) {
1091                 kfree(obj);
1092                 return AE_ERROR;
1093         }
1094         if (obj->buffer.length != 8) {
1095                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1096                 kfree(obj);
1097                 return AE_ERROR;
1098         }
1099
1100         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1101         kfree(obj);
1102
1103         if (return_value.error_code || return_value.ec_return_value)
1104                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1105                         device,
1106                         return_value.error_code,
1107                         return_value.ec_return_value);
1108         else
1109                 *value = !!(return_value.devices & device);
1110
1111         return status;
1112 }
1113
1114 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1115 {
1116         u16 device;
1117
1118         switch (cap) {
1119         case ACER_CAP_WIRELESS:
1120                 device = ACER_WMID3_GDS_WIRELESS;
1121                 break;
1122         case ACER_CAP_BLUETOOTH:
1123                 device = ACER_WMID3_GDS_BLUETOOTH;
1124                 break;
1125         case ACER_CAP_THREEG:
1126                 device = ACER_WMID3_GDS_THREEG;
1127                 break;
1128         default:
1129                 return AE_ERROR;
1130         }
1131         return wmid3_get_device_status(value, device);
1132 }
1133
1134 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1135 {
1136         struct wmid3_gds_return_value return_value;
1137         acpi_status status;
1138         union acpi_object *obj;
1139         u16 devices;
1140         struct wmid3_gds_get_input_param get_params = {
1141                 .function_num = 0x1,
1142                 .hotkey_number = commun_fn_key_number,
1143                 .devices = commun_func_bitmap,
1144         };
1145         struct acpi_buffer get_input = {
1146                 sizeof(struct wmid3_gds_get_input_param),
1147                 &get_params
1148         };
1149         struct wmid3_gds_set_input_param set_params = {
1150                 .function_num = 0x2,
1151                 .hotkey_number = commun_fn_key_number,
1152                 .devices = commun_func_bitmap,
1153         };
1154         struct acpi_buffer set_input = {
1155                 sizeof(struct wmid3_gds_set_input_param),
1156                 &set_params
1157         };
1158         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1159         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1160
1161         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1162         if (ACPI_FAILURE(status))
1163                 return status;
1164
1165         obj = output.pointer;
1166
1167         if (!obj)
1168                 return AE_ERROR;
1169         else if (obj->type != ACPI_TYPE_BUFFER) {
1170                 kfree(obj);
1171                 return AE_ERROR;
1172         }
1173         if (obj->buffer.length != 8) {
1174                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1175                 kfree(obj);
1176                 return AE_ERROR;
1177         }
1178
1179         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1180         kfree(obj);
1181
1182         if (return_value.error_code || return_value.ec_return_value) {
1183                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1184                         return_value.error_code,
1185                         return_value.ec_return_value);
1186                 return status;
1187         }
1188
1189         devices = return_value.devices;
1190         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1191
1192         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1193         if (ACPI_FAILURE(status))
1194                 return status;
1195
1196         obj = output2.pointer;
1197
1198         if (!obj)
1199                 return AE_ERROR;
1200         else if (obj->type != ACPI_TYPE_BUFFER) {
1201                 kfree(obj);
1202                 return AE_ERROR;
1203         }
1204         if (obj->buffer.length != 4) {
1205                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1206                 kfree(obj);
1207                 return AE_ERROR;
1208         }
1209
1210         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1211         kfree(obj);
1212
1213         if (return_value.error_code || return_value.ec_return_value)
1214                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1215                         return_value.error_code,
1216                         return_value.ec_return_value);
1217
1218         return status;
1219 }
1220
1221 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1222 {
1223         u16 device;
1224
1225         switch (cap) {
1226         case ACER_CAP_WIRELESS:
1227                 device = ACER_WMID3_GDS_WIRELESS;
1228                 break;
1229         case ACER_CAP_BLUETOOTH:
1230                 device = ACER_WMID3_GDS_BLUETOOTH;
1231                 break;
1232         case ACER_CAP_THREEG:
1233                 device = ACER_WMID3_GDS_THREEG;
1234                 break;
1235         default:
1236                 return AE_ERROR;
1237         }
1238         return wmid3_set_device_status(value, device);
1239 }
1240
1241 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1242 {
1243         struct hotkey_function_type_aa *type_aa;
1244
1245         /* We are looking for OEM-specific Type AAh */
1246         if (header->type != 0xAA)
1247                 return;
1248
1249         has_type_aa = true;
1250         type_aa = (struct hotkey_function_type_aa *) header;
1251
1252         pr_info("Function bitmap for Communication Button: 0x%x\n",
1253                 type_aa->commun_func_bitmap);
1254         commun_func_bitmap = type_aa->commun_func_bitmap;
1255
1256         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1257                 interface->capability |= ACER_CAP_WIRELESS;
1258         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1259                 interface->capability |= ACER_CAP_THREEG;
1260         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1261                 interface->capability |= ACER_CAP_BLUETOOTH;
1262
1263         commun_fn_key_number = type_aa->commun_fn_key_number;
1264 }
1265
1266 static acpi_status __init WMID_set_capabilities(void)
1267 {
1268         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1269         union acpi_object *obj;
1270         acpi_status status;
1271         u32 devices;
1272
1273         status = wmi_query_block(WMID_GUID2, 1, &out);
1274         if (ACPI_FAILURE(status))
1275                 return status;
1276
1277         obj = (union acpi_object *) out.pointer;
1278         if (obj) {
1279                 if (obj->type == ACPI_TYPE_BUFFER &&
1280                         (obj->buffer.length == sizeof(u32) ||
1281                         obj->buffer.length == sizeof(u64))) {
1282                         devices = *((u32 *) obj->buffer.pointer);
1283                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1284                         devices = (u32) obj->integer.value;
1285                 } else {
1286                         kfree(out.pointer);
1287                         return AE_ERROR;
1288                 }
1289         } else {
1290                 kfree(out.pointer);
1291                 return AE_ERROR;
1292         }
1293
1294         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1295         if (devices & 0x07)
1296                 interface->capability |= ACER_CAP_WIRELESS;
1297         if (devices & 0x40)
1298                 interface->capability |= ACER_CAP_THREEG;
1299         if (devices & 0x10)
1300                 interface->capability |= ACER_CAP_BLUETOOTH;
1301
1302         if (!(devices & 0x20))
1303                 max_brightness = 0x9;
1304
1305         kfree(out.pointer);
1306         return status;
1307 }
1308
1309 static struct wmi_interface wmid_interface = {
1310         .type = ACER_WMID,
1311 };
1312
1313 static struct wmi_interface wmid_v2_interface = {
1314         .type = ACER_WMID_v2,
1315 };
1316
1317 /*
1318  * Generic Device (interface-independent)
1319  */
1320
1321 static acpi_status get_u32(u32 *value, u32 cap)
1322 {
1323         acpi_status status = AE_ERROR;
1324
1325         switch (interface->type) {
1326         case ACER_AMW0:
1327                 status = AMW0_get_u32(value, cap);
1328                 break;
1329         case ACER_AMW0_V2:
1330                 if (cap == ACER_CAP_MAILLED) {
1331                         status = AMW0_get_u32(value, cap);
1332                         break;
1333                 }
1334         case ACER_WMID:
1335                 status = WMID_get_u32(value, cap);
1336                 break;
1337         case ACER_WMID_v2:
1338                 if (cap & (ACER_CAP_WIRELESS |
1339                            ACER_CAP_BLUETOOTH |
1340                            ACER_CAP_THREEG))
1341                         status = wmid_v2_get_u32(value, cap);
1342                 else if (wmi_has_guid(WMID_GUID2))
1343                         status = WMID_get_u32(value, cap);
1344                 break;
1345         }
1346
1347         return status;
1348 }
1349
1350 static acpi_status set_u32(u32 value, u32 cap)
1351 {
1352         acpi_status status;
1353
1354         if (interface->capability & cap) {
1355                 switch (interface->type) {
1356                 case ACER_AMW0:
1357                         return AMW0_set_u32(value, cap);
1358                 case ACER_AMW0_V2:
1359                         if (cap == ACER_CAP_MAILLED)
1360                                 return AMW0_set_u32(value, cap);
1361
1362                         /*
1363                          * On some models, some WMID methods don't toggle
1364                          * properly. For those cases, we want to run the AMW0
1365                          * method afterwards to be certain we've really toggled
1366                          * the device state.
1367                          */
1368                         if (cap == ACER_CAP_WIRELESS ||
1369                                 cap == ACER_CAP_BLUETOOTH) {
1370                                 status = WMID_set_u32(value, cap);
1371                                 if (ACPI_FAILURE(status))
1372                                         return status;
1373
1374                                 return AMW0_set_u32(value, cap);
1375                         }
1376                 case ACER_WMID:
1377                         return WMID_set_u32(value, cap);
1378                 case ACER_WMID_v2:
1379                         if (cap & (ACER_CAP_WIRELESS |
1380                                    ACER_CAP_BLUETOOTH |
1381                                    ACER_CAP_THREEG))
1382                                 return wmid_v2_set_u32(value, cap);
1383                         else if (wmi_has_guid(WMID_GUID2))
1384                                 return WMID_set_u32(value, cap);
1385                 default:
1386                         return AE_BAD_PARAMETER;
1387                 }
1388         }
1389         return AE_BAD_PARAMETER;
1390 }
1391
1392 static void __init acer_commandline_init(void)
1393 {
1394         /*
1395          * These will all fail silently if the value given is invalid, or the
1396          * capability isn't available on the given interface
1397          */
1398         if (mailled >= 0)
1399                 set_u32(mailled, ACER_CAP_MAILLED);
1400         if (!has_type_aa && threeg >= 0)
1401                 set_u32(threeg, ACER_CAP_THREEG);
1402         if (brightness >= 0)
1403                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1404 }
1405
1406 /*
1407  * LED device (Mail LED only, no other LEDs known yet)
1408  */
1409 static void mail_led_set(struct led_classdev *led_cdev,
1410 enum led_brightness value)
1411 {
1412         set_u32(value, ACER_CAP_MAILLED);
1413 }
1414
1415 static struct led_classdev mail_led = {
1416         .name = "acer-wmi::mail",
1417         .brightness_set = mail_led_set,
1418 };
1419
1420 static int acer_led_init(struct device *dev)
1421 {
1422         return led_classdev_register(dev, &mail_led);
1423 }
1424
1425 static void acer_led_exit(void)
1426 {
1427         set_u32(LED_OFF, ACER_CAP_MAILLED);
1428         led_classdev_unregister(&mail_led);
1429 }
1430
1431 /*
1432  * Backlight device
1433  */
1434 static struct backlight_device *acer_backlight_device;
1435
1436 static int read_brightness(struct backlight_device *bd)
1437 {
1438         u32 value;
1439         get_u32(&value, ACER_CAP_BRIGHTNESS);
1440         return value;
1441 }
1442
1443 static int update_bl_status(struct backlight_device *bd)
1444 {
1445         int intensity = bd->props.brightness;
1446
1447         if (bd->props.power != FB_BLANK_UNBLANK)
1448                 intensity = 0;
1449         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1450                 intensity = 0;
1451
1452         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1453
1454         return 0;
1455 }
1456
1457 static const struct backlight_ops acer_bl_ops = {
1458         .get_brightness = read_brightness,
1459         .update_status = update_bl_status,
1460 };
1461
1462 static int acer_backlight_init(struct device *dev)
1463 {
1464         struct backlight_properties props;
1465         struct backlight_device *bd;
1466
1467         memset(&props, 0, sizeof(struct backlight_properties));
1468         props.type = BACKLIGHT_PLATFORM;
1469         props.max_brightness = max_brightness;
1470         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1471                                        &props);
1472         if (IS_ERR(bd)) {
1473                 pr_err("Could not register Acer backlight device\n");
1474                 acer_backlight_device = NULL;
1475                 return PTR_ERR(bd);
1476         }
1477
1478         acer_backlight_device = bd;
1479
1480         bd->props.power = FB_BLANK_UNBLANK;
1481         bd->props.brightness = read_brightness(bd);
1482         backlight_update_status(bd);
1483         return 0;
1484 }
1485
1486 static void acer_backlight_exit(void)
1487 {
1488         backlight_device_unregister(acer_backlight_device);
1489 }
1490
1491 /*
1492  * Accelerometer device
1493  */
1494 static acpi_handle gsensor_handle;
1495
1496 static int acer_gsensor_init(void)
1497 {
1498         acpi_status status;
1499         struct acpi_buffer output;
1500         union acpi_object out_obj;
1501
1502         output.length = sizeof(out_obj);
1503         output.pointer = &out_obj;
1504         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1505         if (ACPI_FAILURE(status))
1506                 return -1;
1507
1508         return 0;
1509 }
1510
1511 static int acer_gsensor_open(struct input_dev *input)
1512 {
1513         return acer_gsensor_init();
1514 }
1515
1516 static int acer_gsensor_event(void)
1517 {
1518         acpi_status status;
1519         struct acpi_buffer output;
1520         union acpi_object out_obj[5];
1521
1522         if (!has_cap(ACER_CAP_ACCEL))
1523                 return -1;
1524
1525         output.length = sizeof(out_obj);
1526         output.pointer = out_obj;
1527
1528         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1529         if (ACPI_FAILURE(status))
1530                 return -1;
1531
1532         if (out_obj->package.count != 4)
1533                 return -1;
1534
1535         input_report_abs(acer_wmi_accel_dev, ABS_X,
1536                 (s16)out_obj->package.elements[0].integer.value);
1537         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1538                 (s16)out_obj->package.elements[1].integer.value);
1539         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1540                 (s16)out_obj->package.elements[2].integer.value);
1541         input_sync(acer_wmi_accel_dev);
1542         return 0;
1543 }
1544
1545 /*
1546  * Rfkill devices
1547  */
1548 static void acer_rfkill_update(struct work_struct *ignored);
1549 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1550 static void acer_rfkill_update(struct work_struct *ignored)
1551 {
1552         u32 state;
1553         acpi_status status;
1554
1555         if (has_cap(ACER_CAP_WIRELESS)) {
1556                 status = get_u32(&state, ACER_CAP_WIRELESS);
1557                 if (ACPI_SUCCESS(status)) {
1558                         if (quirks->wireless == 3)
1559                                 rfkill_set_hw_state(wireless_rfkill, !state);
1560                         else
1561                                 rfkill_set_sw_state(wireless_rfkill, !state);
1562                 }
1563         }
1564
1565         if (has_cap(ACER_CAP_BLUETOOTH)) {
1566                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1567                 if (ACPI_SUCCESS(status))
1568                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1569         }
1570
1571         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1572                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1573                 if (ACPI_SUCCESS(status))
1574                         rfkill_set_sw_state(threeg_rfkill, !state);
1575         }
1576
1577         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1578 }
1579
1580 static int acer_rfkill_set(void *data, bool blocked)
1581 {
1582         acpi_status status;
1583         u32 cap = (unsigned long)data;
1584
1585         if (rfkill_inited) {
1586                 status = set_u32(!blocked, cap);
1587                 if (ACPI_FAILURE(status))
1588                         return -ENODEV;
1589         }
1590
1591         return 0;
1592 }
1593
1594 static const struct rfkill_ops acer_rfkill_ops = {
1595         .set_block = acer_rfkill_set,
1596 };
1597
1598 static struct rfkill *acer_rfkill_register(struct device *dev,
1599                                            enum rfkill_type type,
1600                                            char *name, u32 cap)
1601 {
1602         int err;
1603         struct rfkill *rfkill_dev;
1604         u32 state;
1605         acpi_status status;
1606
1607         rfkill_dev = rfkill_alloc(name, dev, type,
1608                                   &acer_rfkill_ops,
1609                                   (void *)(unsigned long)cap);
1610         if (!rfkill_dev)
1611                 return ERR_PTR(-ENOMEM);
1612
1613         status = get_u32(&state, cap);
1614
1615         err = rfkill_register(rfkill_dev);
1616         if (err) {
1617                 rfkill_destroy(rfkill_dev);
1618                 return ERR_PTR(err);
1619         }
1620
1621         if (ACPI_SUCCESS(status))
1622                 rfkill_set_sw_state(rfkill_dev, !state);
1623
1624         return rfkill_dev;
1625 }
1626
1627 static int acer_rfkill_init(struct device *dev)
1628 {
1629         int err;
1630
1631         if (has_cap(ACER_CAP_WIRELESS)) {
1632                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1633                         "acer-wireless", ACER_CAP_WIRELESS);
1634                 if (IS_ERR(wireless_rfkill)) {
1635                         err = PTR_ERR(wireless_rfkill);
1636                         goto error_wireless;
1637                 }
1638         }
1639
1640         if (has_cap(ACER_CAP_BLUETOOTH)) {
1641                 bluetooth_rfkill = acer_rfkill_register(dev,
1642                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1643                         ACER_CAP_BLUETOOTH);
1644                 if (IS_ERR(bluetooth_rfkill)) {
1645                         err = PTR_ERR(bluetooth_rfkill);
1646                         goto error_bluetooth;
1647                 }
1648         }
1649
1650         if (has_cap(ACER_CAP_THREEG)) {
1651                 threeg_rfkill = acer_rfkill_register(dev,
1652                         RFKILL_TYPE_WWAN, "acer-threeg",
1653                         ACER_CAP_THREEG);
1654                 if (IS_ERR(threeg_rfkill)) {
1655                         err = PTR_ERR(threeg_rfkill);
1656                         goto error_threeg;
1657                 }
1658         }
1659
1660         rfkill_inited = true;
1661
1662         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1663             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1664                 schedule_delayed_work(&acer_rfkill_work,
1665                         round_jiffies_relative(HZ));
1666
1667         return 0;
1668
1669 error_threeg:
1670         if (has_cap(ACER_CAP_BLUETOOTH)) {
1671                 rfkill_unregister(bluetooth_rfkill);
1672                 rfkill_destroy(bluetooth_rfkill);
1673         }
1674 error_bluetooth:
1675         if (has_cap(ACER_CAP_WIRELESS)) {
1676                 rfkill_unregister(wireless_rfkill);
1677                 rfkill_destroy(wireless_rfkill);
1678         }
1679 error_wireless:
1680         return err;
1681 }
1682
1683 static void acer_rfkill_exit(void)
1684 {
1685         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1686             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1687                 cancel_delayed_work_sync(&acer_rfkill_work);
1688
1689         if (has_cap(ACER_CAP_WIRELESS)) {
1690                 rfkill_unregister(wireless_rfkill);
1691                 rfkill_destroy(wireless_rfkill);
1692         }
1693
1694         if (has_cap(ACER_CAP_BLUETOOTH)) {
1695                 rfkill_unregister(bluetooth_rfkill);
1696                 rfkill_destroy(bluetooth_rfkill);
1697         }
1698
1699         if (has_cap(ACER_CAP_THREEG)) {
1700                 rfkill_unregister(threeg_rfkill);
1701                 rfkill_destroy(threeg_rfkill);
1702         }
1703         return;
1704 }
1705
1706 static void acer_wmi_notify(u32 value, void *context)
1707 {
1708         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1709         union acpi_object *obj;
1710         struct event_return_value return_value;
1711         acpi_status status;
1712         u16 device_state;
1713         const struct key_entry *key;
1714         u32 scancode;
1715
1716         status = wmi_get_event_data(value, &response);
1717         if (status != AE_OK) {
1718                 pr_warn("bad event status 0x%x\n", status);
1719                 return;
1720         }
1721
1722         obj = (union acpi_object *)response.pointer;
1723
1724         if (!obj)
1725                 return;
1726         if (obj->type != ACPI_TYPE_BUFFER) {
1727                 pr_warn("Unknown response received %d\n", obj->type);
1728                 kfree(obj);
1729                 return;
1730         }
1731         if (obj->buffer.length != 8) {
1732                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1733                 kfree(obj);
1734                 return;
1735         }
1736
1737         return_value = *((struct event_return_value *)obj->buffer.pointer);
1738         kfree(obj);
1739
1740         switch (return_value.function) {
1741         case WMID_HOTKEY_EVENT:
1742                 device_state = return_value.device_state;
1743                 pr_debug("device state: 0x%x\n", device_state);
1744
1745                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1746                                                         return_value.key_num);
1747                 if (!key) {
1748                         pr_warn("Unknown key number - 0x%x\n",
1749                                 return_value.key_num);
1750                 } else {
1751                         scancode = return_value.key_num;
1752                         switch (key->keycode) {
1753                         case KEY_WLAN:
1754                         case KEY_BLUETOOTH:
1755                                 if (has_cap(ACER_CAP_WIRELESS))
1756                                         rfkill_set_sw_state(wireless_rfkill,
1757                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1758                                 if (has_cap(ACER_CAP_THREEG))
1759                                         rfkill_set_sw_state(threeg_rfkill,
1760                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1761                                 if (has_cap(ACER_CAP_BLUETOOTH))
1762                                         rfkill_set_sw_state(bluetooth_rfkill,
1763                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1764                                 break;
1765                         case KEY_TOUCHPAD_TOGGLE:
1766                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1767                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1768                         }
1769                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1770                 }
1771                 break;
1772         case WMID_ACCEL_EVENT:
1773                 acer_gsensor_event();
1774                 break;
1775         default:
1776                 pr_warn("Unknown function number - %d - %d\n",
1777                         return_value.function, return_value.key_num);
1778                 break;
1779         }
1780 }
1781
1782 static acpi_status __init
1783 wmid3_set_lm_mode(struct lm_input_params *params,
1784                   struct lm_return_value *return_value)
1785 {
1786         acpi_status status;
1787         union acpi_object *obj;
1788
1789         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1790         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1791
1792         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1793         if (ACPI_FAILURE(status))
1794                 return status;
1795
1796         obj = output.pointer;
1797
1798         if (!obj)
1799                 return AE_ERROR;
1800         else if (obj->type != ACPI_TYPE_BUFFER) {
1801                 kfree(obj);
1802                 return AE_ERROR;
1803         }
1804         if (obj->buffer.length != 4) {
1805                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1806                 kfree(obj);
1807                 return AE_ERROR;
1808         }
1809
1810         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1811         kfree(obj);
1812
1813         return status;
1814 }
1815
1816 static int __init acer_wmi_enable_ec_raw(void)
1817 {
1818         struct lm_return_value return_value;
1819         acpi_status status;
1820         struct lm_input_params params = {
1821                 .function_num = 0x1,
1822                 .commun_devices = 0xFFFF,
1823                 .devices = 0xFFFF,
1824                 .lm_status = 0x00,            /* Launch Manager Deactive */
1825         };
1826
1827         status = wmid3_set_lm_mode(&params, &return_value);
1828
1829         if (return_value.error_code || return_value.ec_return_value)
1830                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1831                         return_value.error_code,
1832                         return_value.ec_return_value);
1833         else
1834                 pr_info("Enabled EC raw mode\n");
1835
1836         return status;
1837 }
1838
1839 static int __init acer_wmi_enable_lm(void)
1840 {
1841         struct lm_return_value return_value;
1842         acpi_status status;
1843         struct lm_input_params params = {
1844                 .function_num = 0x1,
1845                 .commun_devices = 0xFFFF,
1846                 .devices = 0xFFFF,
1847                 .lm_status = 0x01,            /* Launch Manager Active */
1848         };
1849
1850         status = wmid3_set_lm_mode(&params, &return_value);
1851
1852         if (return_value.error_code || return_value.ec_return_value)
1853                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1854                         return_value.error_code,
1855                         return_value.ec_return_value);
1856
1857         return status;
1858 }
1859
1860 #define ACER_WMID_ACCEL_HID     "BST0001"
1861
1862 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1863                                                 void *ctx, void **retval)
1864 {
1865         struct acpi_device *dev;
1866
1867         if (!strcmp(ctx, "SENR")) {
1868                 if (acpi_bus_get_device(ah, &dev))
1869                         return AE_OK;
1870                 if (strcmp(ACER_WMID_ACCEL_HID, acpi_device_hid(dev)))
1871                         return AE_OK;
1872         } else
1873                 return AE_OK;
1874
1875         *(acpi_handle *)retval = ah;
1876
1877         return AE_CTRL_TERMINATE;
1878 }
1879
1880 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1881                                         acpi_handle *ah)
1882 {
1883         acpi_status status;
1884         acpi_handle handle;
1885
1886         BUG_ON(!name || !ah);
1887
1888         handle = NULL;
1889         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1890                                         (void *)name, &handle);
1891         if (ACPI_SUCCESS(status) && handle) {
1892                 *ah = handle;
1893                 return 0;
1894         } else {
1895                 return -ENODEV;
1896         }
1897 }
1898
1899 static int __init acer_wmi_accel_setup(void)
1900 {
1901         int err;
1902
1903         err = acer_wmi_get_handle("SENR", ACER_WMID_ACCEL_HID, &gsensor_handle);
1904         if (err)
1905                 return err;
1906
1907         interface->capability |= ACER_CAP_ACCEL;
1908
1909         acer_wmi_accel_dev = input_allocate_device();
1910         if (!acer_wmi_accel_dev)
1911                 return -ENOMEM;
1912
1913         acer_wmi_accel_dev->open = acer_gsensor_open;
1914
1915         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1916         acer_wmi_accel_dev->phys = "wmi/input1";
1917         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1918         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1919         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1920         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1921         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1922
1923         err = input_register_device(acer_wmi_accel_dev);
1924         if (err)
1925                 goto err_free_dev;
1926
1927         return 0;
1928
1929 err_free_dev:
1930         input_free_device(acer_wmi_accel_dev);
1931         return err;
1932 }
1933
1934 static void acer_wmi_accel_destroy(void)
1935 {
1936         input_unregister_device(acer_wmi_accel_dev);
1937 }
1938
1939 static int __init acer_wmi_input_setup(void)
1940 {
1941         acpi_status status;
1942         int err;
1943
1944         acer_wmi_input_dev = input_allocate_device();
1945         if (!acer_wmi_input_dev)
1946                 return -ENOMEM;
1947
1948         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1949         acer_wmi_input_dev->phys = "wmi/input0";
1950         acer_wmi_input_dev->id.bustype = BUS_HOST;
1951
1952         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1953         if (err)
1954                 goto err_free_dev;
1955
1956         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1957                                                 acer_wmi_notify, NULL);
1958         if (ACPI_FAILURE(status)) {
1959                 err = -EIO;
1960                 goto err_free_keymap;
1961         }
1962
1963         err = input_register_device(acer_wmi_input_dev);
1964         if (err)
1965                 goto err_uninstall_notifier;
1966
1967         return 0;
1968
1969 err_uninstall_notifier:
1970         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1971 err_free_keymap:
1972         sparse_keymap_free(acer_wmi_input_dev);
1973 err_free_dev:
1974         input_free_device(acer_wmi_input_dev);
1975         return err;
1976 }
1977
1978 static void acer_wmi_input_destroy(void)
1979 {
1980         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1981         sparse_keymap_free(acer_wmi_input_dev);
1982         input_unregister_device(acer_wmi_input_dev);
1983 }
1984
1985 /*
1986  * debugfs functions
1987  */
1988 static u32 get_wmid_devices(void)
1989 {
1990         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1991         union acpi_object *obj;
1992         acpi_status status;
1993         u32 devices = 0;
1994
1995         status = wmi_query_block(WMID_GUID2, 1, &out);
1996         if (ACPI_FAILURE(status))
1997                 return 0;
1998
1999         obj = (union acpi_object *) out.pointer;
2000         if (obj) {
2001                 if (obj->type == ACPI_TYPE_BUFFER &&
2002                         (obj->buffer.length == sizeof(u32) ||
2003                         obj->buffer.length == sizeof(u64))) {
2004                         devices = *((u32 *) obj->buffer.pointer);
2005                 } else if (obj->type == ACPI_TYPE_INTEGER) {
2006                         devices = (u32) obj->integer.value;
2007                 }
2008         }
2009
2010         kfree(out.pointer);
2011         return devices;
2012 }
2013
2014 /*
2015  * Platform device
2016  */
2017 static int acer_platform_probe(struct platform_device *device)
2018 {
2019         int err;
2020
2021         if (has_cap(ACER_CAP_MAILLED)) {
2022                 err = acer_led_init(&device->dev);
2023                 if (err)
2024                         goto error_mailled;
2025         }
2026
2027         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2028                 err = acer_backlight_init(&device->dev);
2029                 if (err)
2030                         goto error_brightness;
2031         }
2032
2033         err = acer_rfkill_init(&device->dev);
2034         if (err)
2035                 goto error_rfkill;
2036
2037         return err;
2038
2039 error_rfkill:
2040         if (has_cap(ACER_CAP_BRIGHTNESS))
2041                 acer_backlight_exit();
2042 error_brightness:
2043         if (has_cap(ACER_CAP_MAILLED))
2044                 acer_led_exit();
2045 error_mailled:
2046         return err;
2047 }
2048
2049 static int acer_platform_remove(struct platform_device *device)
2050 {
2051         if (has_cap(ACER_CAP_MAILLED))
2052                 acer_led_exit();
2053         if (has_cap(ACER_CAP_BRIGHTNESS))
2054                 acer_backlight_exit();
2055
2056         acer_rfkill_exit();
2057         return 0;
2058 }
2059
2060 #ifdef CONFIG_PM_SLEEP
2061 static int acer_suspend(struct device *dev)
2062 {
2063         u32 value;
2064         struct acer_data *data = &interface->data;
2065
2066         if (!data)
2067                 return -ENOMEM;
2068
2069         if (has_cap(ACER_CAP_MAILLED)) {
2070                 get_u32(&value, ACER_CAP_MAILLED);
2071                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2072                 data->mailled = value;
2073         }
2074
2075         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2076                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2077                 data->brightness = value;
2078         }
2079
2080         return 0;
2081 }
2082
2083 static int acer_resume(struct device *dev)
2084 {
2085         struct acer_data *data = &interface->data;
2086
2087         if (!data)
2088                 return -ENOMEM;
2089
2090         if (has_cap(ACER_CAP_MAILLED))
2091                 set_u32(data->mailled, ACER_CAP_MAILLED);
2092
2093         if (has_cap(ACER_CAP_BRIGHTNESS))
2094                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2095
2096         if (has_cap(ACER_CAP_ACCEL))
2097                 acer_gsensor_init();
2098
2099         return 0;
2100 }
2101 #else
2102 #define acer_suspend    NULL
2103 #define acer_resume     NULL
2104 #endif
2105
2106 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2107
2108 static void acer_platform_shutdown(struct platform_device *device)
2109 {
2110         struct acer_data *data = &interface->data;
2111
2112         if (!data)
2113                 return;
2114
2115         if (has_cap(ACER_CAP_MAILLED))
2116                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2117 }
2118
2119 static struct platform_driver acer_platform_driver = {
2120         .driver = {
2121                 .name = "acer-wmi",
2122                 .pm = &acer_pm,
2123         },
2124         .probe = acer_platform_probe,
2125         .remove = acer_platform_remove,
2126         .shutdown = acer_platform_shutdown,
2127 };
2128
2129 static struct platform_device *acer_platform_device;
2130
2131 static void remove_debugfs(void)
2132 {
2133         debugfs_remove(interface->debug.devices);
2134         debugfs_remove(interface->debug.root);
2135 }
2136
2137 static int __init create_debugfs(void)
2138 {
2139         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2140         if (!interface->debug.root) {
2141                 pr_err("Failed to create debugfs directory");
2142                 return -ENOMEM;
2143         }
2144
2145         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2146                                         interface->debug.root,
2147                                         &interface->debug.wmid_devices);
2148         if (!interface->debug.devices)
2149                 goto error_debugfs;
2150
2151         return 0;
2152
2153 error_debugfs:
2154         remove_debugfs();
2155         return -ENOMEM;
2156 }
2157
2158 static int __init acer_wmi_init(void)
2159 {
2160         int err;
2161
2162         pr_info("Acer Laptop ACPI-WMI Extras\n");
2163
2164         if (dmi_check_system(acer_blacklist)) {
2165                 pr_info("Blacklisted hardware detected - not loading\n");
2166                 return -ENODEV;
2167         }
2168
2169         find_quirks();
2170
2171         /*
2172          * The AMW0_GUID1 wmi is not only found on Acer family but also other
2173          * machines like Lenovo, Fujitsu and Medion. In the past days,
2174          * acer-wmi driver handled those non-Acer machines by quirks list.
2175          * But actually acer-wmi driver was loaded on any machines that have
2176          * AMW0_GUID1. This behavior is strange because those machines should
2177          * be supported by appropriate wmi drivers. e.g. fujitsu-laptop,
2178          * ideapad-laptop. So, here checks the machine that has AMW0_GUID1
2179          * should be in Acer/Gateway/Packard Bell white list, or it's already
2180          * in the past quirk list.
2181          */
2182         if (wmi_has_guid(AMW0_GUID1) &&
2183             !dmi_check_system(amw0_whitelist) &&
2184             quirks == &quirk_unknown) {
2185                 pr_err("Unsupported machine has AMW0_GUID1, unable to load\n");
2186                 return -ENODEV;
2187         }
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 && force_caps == -1) {
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_set_dmi_backlight_type(acpi_backlight_vendor);
2237
2238         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2239                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2240
2241         if (force_caps != -1)
2242                 interface->capability = force_caps;
2243
2244         if (wmi_has_guid(WMID_GUID3)) {
2245                 if (ec_raw_mode) {
2246                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2247                                 pr_err("Cannot enable EC raw mode\n");
2248                                 return -ENODEV;
2249                         }
2250                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2251                         pr_err("Cannot enable Launch Manager mode\n");
2252                         return -ENODEV;
2253                 }
2254         } else if (ec_raw_mode) {
2255                 pr_info("No WMID EC raw mode enable method\n");
2256         }
2257
2258         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2259                 err = acer_wmi_input_setup();
2260                 if (err)
2261                         return err;
2262                 err = acer_wmi_accel_setup();
2263                 if (err && err != -ENODEV)
2264                         pr_warn("Cannot enable accelerometer\n");
2265         }
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         if (wmi_has_guid(WMID_GUID2)) {
2284                 interface->debug.wmid_devices = get_wmid_devices();
2285                 err = create_debugfs();
2286                 if (err)
2287                         goto error_create_debugfs;
2288         }
2289
2290         /* Override any initial settings with values from the commandline */
2291         acer_commandline_init();
2292
2293         return 0;
2294
2295 error_create_debugfs:
2296         platform_device_del(acer_platform_device);
2297 error_device_add:
2298         platform_device_put(acer_platform_device);
2299 error_device_alloc:
2300         platform_driver_unregister(&acer_platform_driver);
2301 error_platform_register:
2302         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2303                 acer_wmi_input_destroy();
2304         if (has_cap(ACER_CAP_ACCEL))
2305                 acer_wmi_accel_destroy();
2306
2307         return err;
2308 }
2309
2310 static void __exit acer_wmi_exit(void)
2311 {
2312         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2313                 acer_wmi_input_destroy();
2314
2315         if (has_cap(ACER_CAP_ACCEL))
2316                 acer_wmi_accel_destroy();
2317
2318         remove_debugfs();
2319         platform_device_unregister(acer_platform_device);
2320         platform_driver_unregister(&acer_platform_driver);
2321
2322         pr_info("Acer Laptop WMI Extras unloaded\n");
2323         return;
2324 }
2325
2326 module_init(acer_wmi_init);
2327 module_exit(acer_wmi_exit);