drivers/platform/x86/acer-wmi.c

   1 /*
   2  *  Acer WMI Laptop Extras
   3  *
   4  *  Copyright (C) 2007-2009     Carlos Corbacho <carlos@strangeworlds.co.uk>
   5  *
   6  *  Based on acer_acpi:
   7  *    Copyright (C) 2005-2007   E.M. Smith
   8  *    Copyright (C) 2007-2008   Carlos Corbacho <cathectic@gmail.com>
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  26
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/init.h>
  30 #include <linux/types.h>
  31 #include <linux/dmi.h>
  32 #include <linux/fb.h>
  33 #include <linux/backlight.h>
  34 #include <linux/leds.h>
  35 #include <linux/platform_device.h>
  36 #include <linux/acpi.h>
  37 #include <linux/i8042.h>
  38 #include <linux/rfkill.h>
  39 #include <linux/workqueue.h>
  40 #include <linux/debugfs.h>
  41 #include <linux/slab.h>
  42 #include <linux/input.h>
  43 #include <linux/input/sparse-keymap.h>
  44 #include <acpi/video.h>
  45
  46 MODULE_AUTHOR("Carlos Corbacho");
  47 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
  48 MODULE_LICENSE("GPL");
  49
  50 /*
  51  * Magic Number
  52  * Meaning is unknown - this number is required for writing to ACPI for AMW0
  53  * (it's also used in acerhk when directly accessing the BIOS)
  54  */
  55 #define ACER_AMW0_WRITE 0x9610
  56
  57 /*
  58  * Bit masks for the AMW0 interface
  59  */
  60 #define ACER_AMW0_WIRELESS_MASK  0x35
  61 #define ACER_AMW0_BLUETOOTH_MASK 0x34
  62 #define ACER_AMW0_MAILLED_MASK   0x31
  63
  64 /*
  65  * Method IDs for WMID interface
  66  */
  67 #define ACER_WMID_GET_WIRELESS_METHODID         1
  68 #define ACER_WMID_GET_BLUETOOTH_METHODID        2
  69 #define ACER_WMID_GET_BRIGHTNESS_METHODID       3
  70 #define ACER_WMID_SET_WIRELESS_METHODID         4
  71 #define ACER_WMID_SET_BLUETOOTH_METHODID        5
  72 #define ACER_WMID_SET_BRIGHTNESS_METHODID       6
  73 #define ACER_WMID_GET_THREEG_METHODID           10
  74 #define ACER_WMID_SET_THREEG_METHODID           11
  75
  76 /*
  77  * Acer ACPI method GUIDs
  78  */
  79 #define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
  80 #define AMW0_GUID2              "431F16ED-0C2B-444C-B267-27DEB140CF9C"
  81 #define WMID_GUID1              "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
  82 #define WMID_GUID2              "95764E09-FB56-4E83-B31A-37761F60994A"
  83 #define WMID_GUID3              "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
  84
  85 /*
  86  * Acer ACPI event GUIDs
  87  */
  88 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
  89
  90 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
  91 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
  92 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
  93
  94 enum acer_wmi_event_ids {
  95         WMID_HOTKEY_EVENT = 0x1,
  96         WMID_ACCEL_EVENT = 0x5,
  97 };
  98
  99 static const struct key_entry acer_wmi_keymap[] __initconst = {
 100         {KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
 101         {KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
 102         {KE_KEY, 0x04, {KEY_WLAN} },     /* WiFi */
 103         {KE_KEY, 0x12, {KEY_BLUETOOTH} },       /* BT */
 104         {KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
 105         {KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
 106         {KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
 107         {KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
 108         {KE_KEY, 0x29, {KEY_PROG3} },    /* P_Key for TM8372 */
 109         {KE_IGNORE, 0x41, {KEY_MUTE} },
 110         {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
 111         {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
 112         {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
 113         {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
 114         {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
 115         {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
 116         {KE_IGNORE, 0x45, {KEY_STOP} },
 117         {KE_IGNORE, 0x50, {KEY_STOP} },
 118         {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
 119         {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
 120         {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
 121         {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
 122         {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 123         {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 124         {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
 125         {KE_IGNORE, 0x81, {KEY_SLEEP} },
 126         {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
 127         {KE_IGNORE, 0x84, {KEY_KBDILLUMTOGGLE} }, /* Automatic Keyboard background light toggle */
 128         {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
 129         {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
 130         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 131         {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
 132         {KE_END, 0}
 133 };
 134
 135 static struct input_dev *acer_wmi_input_dev;
 136 static struct input_dev *acer_wmi_accel_dev;
 137
 138 struct event_return_value {
 139         u8 function;
 140         u8 key_num;
 141         u16 device_state;
 142         u32 reserved;
 143 } __attribute__((packed));
 144
 145 /*
 146  * GUID3 Get Device Status device flags
 147  */
 148 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 149 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 150 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 151 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 152 #define ACER_WMID3_GDS_TOUCHPAD         (1<<1)  /* Touchpad */
 153
 154 struct lm_input_params {
 155         u8 function_num;        /* Function Number */
 156         u16 commun_devices;     /* Communication type devices default status */
 157         u16 devices;            /* Other type devices default status */
 158         u8 lm_status;           /* Launch Manager Status */
 159         u16 reserved;
 160 } __attribute__((packed));
 161
 162 struct lm_return_value {
 163         u8 error_code;          /* Error Code */
 164         u8 ec_return_value;     /* EC Return Value */
 165         u16 reserved;
 166 } __attribute__((packed));
 167
 168 struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 169         u8 function_num;        /* Function Number */
 170         u8 hotkey_number;       /* Hotkey Number */
 171         u16 devices;            /* Set Device */
 172         u8 volume_value;        /* Volume Value */
 173 } __attribute__((packed));
 174
 175 struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 176         u8 function_num;        /* Function Number */
 177         u8 hotkey_number;       /* Hotkey Number */
 178         u16 devices;            /* Get Device */
 179 } __attribute__((packed));
 180
 181 struct wmid3_gds_return_value { /* Get Device Status return value*/
 182         u8 error_code;          /* Error Code */
 183         u8 ec_return_value;     /* EC Return Value */
 184         u16 devices;            /* Current Device Status */
 185         u32 reserved;
 186 } __attribute__((packed));
 187
 188 struct hotkey_function_type_aa {
 189         u8 type;
 190         u8 length;
 191         u16 handle;
 192         u16 commun_func_bitmap;
 193         u16 application_func_bitmap;
 194         u16 media_func_bitmap;
 195         u16 display_func_bitmap;
 196         u16 others_func_bitmap;
 197         u8 commun_fn_key_number;
 198 } __attribute__((packed));
 199
 200 /*
 201  * Interface capability flags
 202  */
 203 #define ACER_CAP_MAILLED                (1<<0)
 204 #define ACER_CAP_WIRELESS               (1<<1)
 205 #define ACER_CAP_BLUETOOTH              (1<<2)
 206 #define ACER_CAP_BRIGHTNESS             (1<<3)
 207 #define ACER_CAP_THREEG                 (1<<4)
 208 #define ACER_CAP_ACCEL                  (1<<5)
 209 #define ACER_CAP_ANY                    (0xFFFFFFFF)
 210
 211 /*
 212  * Interface type flags
 213  */
 214 enum interface_flags {
 215         ACER_AMW0,
 216         ACER_AMW0_V2,
 217         ACER_WMID,
 218         ACER_WMID_v2,
 219 };
 220
 221 #define ACER_DEFAULT_WIRELESS  0
 222 #define ACER_DEFAULT_BLUETOOTH 0
 223 #define ACER_DEFAULT_MAILLED   0
 224 #define ACER_DEFAULT_THREEG    0
 225
 226 static int max_brightness = 0xF;
 227
 228 static int mailled = -1;
 229 static int brightness = -1;
 230 static int threeg = -1;
 231 static int force_series;
 232 static int force_caps = -1;
 233 static bool ec_raw_mode;
 234 static bool has_type_aa;
 235 static u16 commun_func_bitmap;
 236 static u8 commun_fn_key_number;
 237
 238 module_param(mailled, int, 0444);
 239 module_param(brightness, int, 0444);
 240 module_param(threeg, int, 0444);
 241 module_param(force_series, int, 0444);
 242 module_param(force_caps, int, 0444);
 243 module_param(ec_raw_mode, bool, 0444);
 244 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 245 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 246 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 247 MODULE_PARM_DESC(force_series, "Force a different laptop series");
 248 MODULE_PARM_DESC(force_caps, "Force the capability bitmask to this value");
 249 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 250
 251 struct acer_data {
 252         int mailled;
 253         int threeg;
 254         int brightness;
 255 };
 256
 257 struct acer_debug {
 258         struct dentry *root;
 259         struct dentry *devices;
 260         u32 wmid_devices;
 261 };
 262
 263 static struct rfkill *wireless_rfkill;
 264 static struct rfkill *bluetooth_rfkill;
 265 static struct rfkill *threeg_rfkill;
 266 static bool rfkill_inited;
 267
 268 /* Each low-level interface must define at least some of the following */
 269 struct wmi_interface {
 270         /* The WMI device type */
 271         u32 type;
 272
 273         /* The capabilities this interface provides */
 274         u32 capability;
 275
 276         /* Private data for the current interface */
 277         struct acer_data data;
 278
 279         /* debugfs entries associated with this interface */
 280         struct acer_debug debug;
 281 };
 282
 283 /* The static interface pointer, points to the currently detected interface */
 284 static struct wmi_interface *interface;
 285
 286 /*
 287  * Embedded Controller quirks
 288  * Some laptops require us to directly access the EC to either enable or query
 289  * features that are not available through WMI.
 290  */
 291
 292 struct quirk_entry {
 293         u8 wireless;
 294         u8 mailled;
 295         s8 brightness;
 296         u8 bluetooth;
 297 };
 298
 299 static struct quirk_entry *quirks;
 300
 301 static void __init set_quirks(void)
 302 {
 303         if (!interface)
 304                 return;
 305
 306         if (quirks->mailled)
 307                 interface->capability |= ACER_CAP_MAILLED;
 308
 309         if (quirks->brightness)
 310                 interface->capability |= ACER_CAP_BRIGHTNESS;
 311 }
 312
 313 static int __init dmi_matched(const struct dmi_system_id *dmi)
 314 {
 315         quirks = dmi->driver_data;
 316         return 1;
 317 }
 318
 319 static struct quirk_entry quirk_unknown = {
 320 };
 321
 322 static struct quirk_entry quirk_acer_aspire_1520 = {
 323         .brightness = -1,
 324 };
 325
 326 static struct quirk_entry quirk_acer_travelmate_2490 = {
 327         .mailled = 1,
 328 };
 329
 330 /* This AMW0 laptop has no bluetooth */
 331 static struct quirk_entry quirk_medion_md_98300 = {
 332         .wireless = 1,
 333 };
 334
 335 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 336         .wireless = 2,
 337 };
 338
 339 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 340         .wireless = 3,
 341 };
 342
 343 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
 344 static const struct dmi_system_id acer_blacklist[] __initconst = {
 345         {
 346                 .ident = "Acer Aspire One (SSD)",
 347                 .matches = {
 348                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 349                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 350                 },
 351         },
 352         {
 353                 .ident = "Acer Aspire One (HDD)",
 354                 .matches = {
 355                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 356                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 357                 },
 358         },
 359         {}
 360 };
 361
 362 static const struct dmi_system_id amw0_whitelist[] __initconst = {
 363         {
 364                 .ident = "Acer",
 365                 .matches = {
 366                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 367                 },
 368         },
 369         {
 370                 .ident = "Gateway",
 371                 .matches = {
 372                         DMI_MATCH(DMI_SYS_VENDOR, "Gateway"),
 373                 },
 374         },
 375         {
 376                 .ident = "Packard Bell",
 377                 .matches = {
 378                         DMI_MATCH(DMI_SYS_VENDOR, "Packard Bell"),
 379                 },
 380         },
 381         {}
 382 };
 383
 384 /*
 385  * This quirk table is only for Acer/Gateway/Packard Bell family
 386  * that those machines are supported by acer-wmi driver.
 387  */
 388 static const struct dmi_system_id acer_quirks[] __initconst = {
 389         {
 390                 .callback = dmi_matched,
 391                 .ident = "Acer Aspire 1360",
 392                 .matches = {
 393                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 394                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 395                 },
 396                 .driver_data = &quirk_acer_aspire_1520,
 397         },
 398         {
 399                 .callback = dmi_matched,
 400                 .ident = "Acer Aspire 1520",
 401                 .matches = {
 402                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 403                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 404                 },
 405                 .driver_data = &quirk_acer_aspire_1520,
 406         },
 407         {
 408                 .callback = dmi_matched,
 409                 .ident = "Acer Aspire 3100",
 410                 .matches = {
 411                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 412                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 413                 },
 414                 .driver_data = &quirk_acer_travelmate_2490,
 415         },
 416         {
 417                 .callback = dmi_matched,
 418                 .ident = "Acer Aspire 3610",
 419                 .matches = {
 420                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 421                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 422                 },
 423                 .driver_data = &quirk_acer_travelmate_2490,
 424         },
 425         {
 426                 .callback = dmi_matched,
 427                 .ident = "Acer Aspire 5100",
 428                 .matches = {
 429                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 430                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 431                 },
 432                 .driver_data = &quirk_acer_travelmate_2490,
 433         },
 434         {
 435                 .callback = dmi_matched,
 436                 .ident = "Acer Aspire 5610",
 437                 .matches = {
 438                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 439                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 440                 },
 441                 .driver_data = &quirk_acer_travelmate_2490,
 442         },
 443         {
 444                 .callback = dmi_matched,
 445                 .ident = "Acer Aspire 5630",
 446                 .matches = {
 447                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 448                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 449                 },
 450                 .driver_data = &quirk_acer_travelmate_2490,
 451         },
 452         {
 453                 .callback = dmi_matched,
 454                 .ident = "Acer Aspire 5650",
 455                 .matches = {
 456                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 457                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 458                 },
 459                 .driver_data = &quirk_acer_travelmate_2490,
 460         },
 461         {
 462                 .callback = dmi_matched,
 463                 .ident = "Acer Aspire 5680",
 464                 .matches = {
 465                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 466                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 467                 },
 468                 .driver_data = &quirk_acer_travelmate_2490,
 469         },
 470         {
 471                 .callback = dmi_matched,
 472                 .ident = "Acer Aspire 9110",
 473                 .matches = {
 474                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 475                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 476                 },
 477                 .driver_data = &quirk_acer_travelmate_2490,
 478         },
 479         {
 480                 .callback = dmi_matched,
 481                 .ident = "Acer TravelMate 2490",
 482                 .matches = {
 483                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 484                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 485                 },
 486                 .driver_data = &quirk_acer_travelmate_2490,
 487         },
 488         {
 489                 .callback = dmi_matched,
 490                 .ident = "Acer TravelMate 4200",
 491                 .matches = {
 492                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 493                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 494                 },
 495                 .driver_data = &quirk_acer_travelmate_2490,
 496         },
 497         {}
 498 };
 499
 500 /*
 501  * This quirk list is for those non-acer machines that have AMW0_GUID1
 502  * but supported by acer-wmi in past days. Keeping this quirk list here
 503  * is only for backward compatible. Please do not add new machine to
 504  * here anymore. Those non-acer machines should be supported by
 505  * appropriate wmi drivers.
 506  */
 507 static const struct dmi_system_id non_acer_quirks[] __initconst = {
 508         {
 509                 .callback = dmi_matched,
 510                 .ident = "Fujitsu Siemens Amilo Li 1718",
 511                 .matches = {
 512                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 513                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 514                 },
 515                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 516         },
 517         {
 518                 .callback = dmi_matched,
 519                 .ident = "Medion MD 98300",
 520                 .matches = {
 521                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 522                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 523                 },
 524                 .driver_data = &quirk_medion_md_98300,
 525         },
 526         {
 527                 .callback = dmi_matched,
 528                 .ident = "Lenovo Ideapad S205",
 529                 .matches = {
 530                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 531                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 532                 },
 533                 .driver_data = &quirk_lenovo_ideapad_s205,
 534         },
 535         {
 536                 .callback = dmi_matched,
 537                 .ident = "Lenovo Ideapad S205 (Brazos)",
 538                 .matches = {
 539                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 540                         DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 541                 },
 542                 .driver_data = &quirk_lenovo_ideapad_s205,
 543         },
 544         {
 545                 .callback = dmi_matched,
 546                 .ident = "Lenovo 3000 N200",
 547                 .matches = {
 548                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 549                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 550                 },
 551                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 552         },
 553         {
 554                 .callback = dmi_matched,
 555                 .ident = "Lenovo Ideapad S205-10382JG",
 556                 .matches = {
 557                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 558                         DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
 559                 },
 560                 .driver_data = &quirk_lenovo_ideapad_s205,
 561         },
 562         {
 563                 .callback = dmi_matched,
 564                 .ident = "Lenovo Ideapad S205-1038DPG",
 565                 .matches = {
 566                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 567                         DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
 568                 },
 569                 .driver_data = &quirk_lenovo_ideapad_s205,
 570         },
 571         {}
 572 };
 573
 574 static int __init
 575 video_set_backlight_video_vendor(const struct dmi_system_id *d)
 576 {
 577         interface->capability &= ~ACER_CAP_BRIGHTNESS;
 578         pr_info("Brightness must be controlled by generic video driver\n");
 579         return 0;
 580 }
 581
 582 static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
 583         {
 584                 .callback = video_set_backlight_video_vendor,
 585                 .ident = "Acer TravelMate 4750",
 586                 .matches = {
 587                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 588                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 589                 },
 590         },
 591         {
 592                 .callback = video_set_backlight_video_vendor,
 593                 .ident = "Acer Extensa 5235",
 594                 .matches = {
 595                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 596                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 597                 },
 598         },
 599         {
 600                 .callback = video_set_backlight_video_vendor,
 601                 .ident = "Acer TravelMate 5760",
 602                 .matches = {
 603                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 604                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 605                 },
 606         },
 607         {
 608                 .callback = video_set_backlight_video_vendor,
 609                 .ident = "Acer Aspire 5750",
 610                 .matches = {
 611                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 612                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 613                 },
 614         },
 615         {
 616                 .callback = video_set_backlight_video_vendor,
 617                 .ident = "Acer Aspire 5741",
 618                 .matches = {
 619                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 620                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
 621                 },
 622         },
 623         {
 624                 /*
 625                  * Note no video_set_backlight_video_vendor, we must use the
 626                  * acer interface, as there is no native backlight interface.
 627                  */
 628                 .ident = "Acer KAV80",
 629                 .matches = {
 630                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 631                         DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
 632                 },
 633         },
 634         {}
 635 };
 636
 637 /* Find which quirks are needed for a particular vendor/ model pair */
 638 static void __init find_quirks(void)
 639 {
 640         if (!force_series) {
 641                 dmi_check_system(acer_quirks);
 642                 dmi_check_system(non_acer_quirks);
 643         } else if (force_series == 2490) {
 644                 quirks = &quirk_acer_travelmate_2490;
 645         }
 646
 647         if (quirks == NULL)
 648                 quirks = &quirk_unknown;
 649
 650         set_quirks();
 651 }
 652
 653 /*
 654  * General interface convenience methods
 655  */
 656
 657 static bool has_cap(u32 cap)
 658 {
 659         if ((interface->capability & cap) != 0)
 660                 return 1;
 661
 662         return 0;
 663 }
 664
 665 /*
 666  * AMW0 (V1) interface
 667  */
 668 struct wmab_args {
 669         u32 eax;
 670         u32 ebx;
 671         u32 ecx;
 672         u32 edx;
 673 };
 674
 675 struct wmab_ret {
 676         u32 eax;
 677         u32 ebx;
 678         u32 ecx;
 679         u32 edx;
 680         u32 eex;
 681 };
 682
 683 static acpi_status wmab_execute(struct wmab_args *regbuf,
 684 struct acpi_buffer *result)
 685 {
 686         struct acpi_buffer input;
 687         acpi_status status;
 688         input.length = sizeof(struct wmab_args);
 689         input.pointer = (u8 *)regbuf;
 690
 691         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
 692
 693         return status;
 694 }
 695
 696 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 697 {
 698         int err;
 699         u8 result;
 700
 701         switch (cap) {
 702         case ACER_CAP_MAILLED:
 703                 switch (quirks->mailled) {
 704                 default:
 705                         err = ec_read(0xA, &result);
 706                         if (err)
 707                                 return AE_ERROR;
 708                         *value = (result >> 7) & 0x1;
 709                         return AE_OK;
 710                 }
 711                 break;
 712         case ACER_CAP_WIRELESS:
 713                 switch (quirks->wireless) {
 714                 case 1:
 715                         err = ec_read(0x7B, &result);
 716                         if (err)
 717                                 return AE_ERROR;
 718                         *value = result & 0x1;
 719                         return AE_OK;
 720                 case 2:
 721                         err = ec_read(0x71, &result);
 722                         if (err)
 723                                 return AE_ERROR;
 724                         *value = result & 0x1;
 725                         return AE_OK;
 726                 case 3:
 727                         err = ec_read(0x78, &result);
 728                         if (err)
 729                                 return AE_ERROR;
 730                         *value = result & 0x1;
 731                         return AE_OK;
 732                 default:
 733                         err = ec_read(0xA, &result);
 734                         if (err)
 735                                 return AE_ERROR;
 736                         *value = (result >> 2) & 0x1;
 737                         return AE_OK;
 738                 }
 739                 break;
 740         case ACER_CAP_BLUETOOTH:
 741                 switch (quirks->bluetooth) {
 742                 default:
 743                         err = ec_read(0xA, &result);
 744                         if (err)
 745                                 return AE_ERROR;
 746                         *value = (result >> 4) & 0x1;
 747                         return AE_OK;
 748                 }
 749                 break;
 750         case ACER_CAP_BRIGHTNESS:
 751                 switch (quirks->brightness) {
 752                 default:
 753                         err = ec_read(0x83, &result);
 754                         if (err)
 755                                 return AE_ERROR;
 756                         *value = result;
 757                         return AE_OK;
 758                 }
 759                 break;
 760         default:
 761                 return AE_ERROR;
 762         }
 763         return AE_OK;
 764 }
 765
 766 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 767 {
 768         struct wmab_args args;
 769
 770         args.eax = ACER_AMW0_WRITE;
 771         args.ebx = value ? (1<<8) : 0;
 772         args.ecx = args.edx = 0;
 773
 774         switch (cap) {
 775         case ACER_CAP_MAILLED:
 776                 if (value > 1)
 777                         return AE_BAD_PARAMETER;
 778                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 779                 break;
 780         case ACER_CAP_WIRELESS:
 781                 if (value > 1)
 782                         return AE_BAD_PARAMETER;
 783                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 784                 break;
 785         case ACER_CAP_BLUETOOTH:
 786                 if (value > 1)
 787                         return AE_BAD_PARAMETER;
 788                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 789                 break;
 790         case ACER_CAP_BRIGHTNESS:
 791                 if (value > max_brightness)
 792                         return AE_BAD_PARAMETER;
 793                 switch (quirks->brightness) {
 794                 default:
 795                         return ec_write(0x83, value);
 796                         break;
 797                 }
 798         default:
 799                 return AE_ERROR;
 800         }
 801
 802         /* Actually do the set */
 803         return wmab_execute(&args, NULL);
 804 }
 805
 806 static acpi_status __init AMW0_find_mailled(void)
 807 {
 808         struct wmab_args args;
 809         struct wmab_ret ret;
 810         acpi_status status = AE_OK;
 811         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 812         union acpi_object *obj;
 813
 814         args.eax = 0x86;
 815         args.ebx = args.ecx = args.edx = 0;
 816
 817         status = wmab_execute(&args, &out);
 818         if (ACPI_FAILURE(status))
 819                 return status;
 820
 821         obj = (union acpi_object *) out.pointer;
 822         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 823         obj->buffer.length == sizeof(struct wmab_ret)) {
 824                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 825         } else {
 826                 kfree(out.pointer);
 827                 return AE_ERROR;
 828         }
 829
 830         if (ret.eex & 0x1)
 831                 interface->capability |= ACER_CAP_MAILLED;
 832
 833         kfree(out.pointer);
 834
 835         return AE_OK;
 836 }
 837
 838 static const struct acpi_device_id norfkill_ids[] __initconst = {
 839         { "VPC2004", 0},
 840         { "IBM0068", 0},
 841         { "LEN0068", 0},
 842         { "SNY5001", 0},        /* sony-laptop in charge */
 843         { "HPQ6601", 0},
 844         { "", 0},
 845 };
 846
 847 static int __init AMW0_set_cap_acpi_check_device(void)
 848 {
 849         const struct acpi_device_id *id;
 850
 851         for (id = norfkill_ids; id->id[0]; id++)
 852                 if (acpi_dev_found(id->id))
 853                         return true;
 854
 855         return false;
 856 }
 857
 858 static acpi_status __init AMW0_set_capabilities(void)
 859 {
 860         struct wmab_args args;
 861         struct wmab_ret ret;
 862         acpi_status status;
 863         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 864         union acpi_object *obj;
 865
 866         /*
 867          * On laptops with this strange GUID (non Acer), normal probing doesn't
 868          * work.
 869          */
 870         if (wmi_has_guid(AMW0_GUID2)) {
 871                 if ((quirks != &quirk_unknown) ||
 872                     !AMW0_set_cap_acpi_check_device())
 873                         interface->capability |= ACER_CAP_WIRELESS;
 874                 return AE_OK;
 875         }
 876
 877         args.eax = ACER_AMW0_WRITE;
 878         args.ecx = args.edx = 0;
 879
 880         args.ebx = 0xa2 << 8;
 881         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 882
 883         status = wmab_execute(&args, &out);
 884         if (ACPI_FAILURE(status))
 885                 return status;
 886
 887         obj = out.pointer;
 888         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 889         obj->buffer.length == sizeof(struct wmab_ret)) {
 890                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 891         } else {
 892                 status = AE_ERROR;
 893                 goto out;
 894         }
 895
 896         if (ret.eax & 0x1)
 897                 interface->capability |= ACER_CAP_WIRELESS;
 898
 899         args.ebx = 2 << 8;
 900         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 901
 902         /*
 903          * It's ok to use existing buffer for next wmab_execute call.
 904          * But we need to kfree(out.pointer) if next wmab_execute fail.
 905          */
 906         status = wmab_execute(&args, &out);
 907         if (ACPI_FAILURE(status))
 908                 goto out;
 909
 910         obj = (union acpi_object *) out.pointer;
 911         if (obj && obj->type == ACPI_TYPE_BUFFER
 912         && obj->buffer.length == sizeof(struct wmab_ret)) {
 913                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 914         } else {
 915                 status = AE_ERROR;
 916                 goto out;
 917         }
 918
 919         if (ret.eax & 0x1)
 920                 interface->capability |= ACER_CAP_BLUETOOTH;
 921
 922         /*
 923          * This appears to be safe to enable, since all Wistron based laptops
 924          * appear to use the same EC register for brightness, even if they
 925          * differ for wireless, etc
 926          */
 927         if (quirks->brightness >= 0)
 928                 interface->capability |= ACER_CAP_BRIGHTNESS;
 929
 930         status = AE_OK;
 931 out:
 932         kfree(out.pointer);
 933         return status;
 934 }
 935
 936 static struct wmi_interface AMW0_interface = {
 937         .type = ACER_AMW0,
 938 };
 939
 940 static struct wmi_interface AMW0_V2_interface = {
 941         .type = ACER_AMW0_V2,
 942 };
 943
 944 /*
 945  * New interface (The WMID interface)
 946  */
 947 static acpi_status
 948 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 949 {
 950         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 951         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 952         union acpi_object *obj;
 953         u32 tmp = 0;
 954         acpi_status status;
 955
 956         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 957
 958         if (ACPI_FAILURE(status))
 959                 return status;
 960
 961         obj = (union acpi_object *) result.pointer;
 962         if (obj) {
 963                 if (obj->type == ACPI_TYPE_BUFFER &&
 964                         (obj->buffer.length == sizeof(u32) ||
 965                         obj->buffer.length == sizeof(u64))) {
 966                         tmp = *((u32 *) obj->buffer.pointer);
 967                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 968                         tmp = (u32) obj->integer.value;
 969                 }
 970         }
 971
 972         if (out)
 973                 *out = tmp;
 974
 975         kfree(result.pointer);
 976
 977         return status;
 978 }
 979
 980 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 981 {
 982         acpi_status status;
 983         u8 tmp;
 984         u32 result, method_id = 0;
 985
 986         switch (cap) {
 987         case ACER_CAP_WIRELESS:
 988                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 989                 break;
 990         case ACER_CAP_BLUETOOTH:
 991                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 992                 break;
 993         case ACER_CAP_BRIGHTNESS:
 994                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 995                 break;
 996         case ACER_CAP_THREEG:
 997                 method_id = ACER_WMID_GET_THREEG_METHODID;
 998                 break;
 999         case ACER_CAP_MAILLED:
1000                 if (quirks->mailled == 1) {
1001                         ec_read(0x9f, &tmp);
1002                         *value = tmp & 0x1;
1003                         return 0;
1004                 }
1005         default:
1006                 return AE_ERROR;
1007         }
1008         status = WMI_execute_u32(method_id, 0, &result);
1009
1010         if (ACPI_SUCCESS(status))
1011                 *value = (u8)result;
1012
1013         return status;
1014 }
1015
1016 static acpi_status WMID_set_u32(u32 value, u32 cap)
1017 {
1018         u32 method_id = 0;
1019         char param;
1020
1021         switch (cap) {
1022         case ACER_CAP_BRIGHTNESS:
1023                 if (value > max_brightness)
1024                         return AE_BAD_PARAMETER;
1025                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
1026                 break;
1027         case ACER_CAP_WIRELESS:
1028                 if (value > 1)
1029                         return AE_BAD_PARAMETER;
1030                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
1031                 break;
1032         case ACER_CAP_BLUETOOTH:
1033                 if (value > 1)
1034                         return AE_BAD_PARAMETER;
1035                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
1036                 break;
1037         case ACER_CAP_THREEG:
1038                 if (value > 1)
1039                         return AE_BAD_PARAMETER;
1040                 method_id = ACER_WMID_SET_THREEG_METHODID;
1041                 break;
1042         case ACER_CAP_MAILLED:
1043                 if (value > 1)
1044                         return AE_BAD_PARAMETER;
1045                 if (quirks->mailled == 1) {
1046                         param = value ? 0x92 : 0x93;
1047                         i8042_lock_chip();
1048                         i8042_command(&param, 0x1059);
1049                         i8042_unlock_chip();
1050                         return 0;
1051                 }
1052                 break;
1053         default:
1054                 return AE_ERROR;
1055         }
1056         return WMI_execute_u32(method_id, (u32)value, NULL);
1057 }
1058
1059 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1060 {
1061         struct wmid3_gds_return_value return_value;
1062         acpi_status status;
1063         union acpi_object *obj;
1064         struct wmid3_gds_get_input_param params = {
1065                 .function_num = 0x1,
1066                 .hotkey_number = commun_fn_key_number,
1067                 .devices = device,
1068         };
1069         struct acpi_buffer input = {
1070                 sizeof(struct wmid3_gds_get_input_param),
1071                 &params
1072         };
1073         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1074
1075         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1076         if (ACPI_FAILURE(status))
1077                 return status;
1078
1079         obj = output.pointer;
1080
1081         if (!obj)
1082                 return AE_ERROR;
1083         else if (obj->type != ACPI_TYPE_BUFFER) {
1084                 kfree(obj);
1085                 return AE_ERROR;
1086         }
1087         if (obj->buffer.length != 8) {
1088                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1089                 kfree(obj);
1090                 return AE_ERROR;
1091         }
1092
1093         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1094         kfree(obj);
1095
1096         if (return_value.error_code || return_value.ec_return_value)
1097                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1098                         device,
1099                         return_value.error_code,
1100                         return_value.ec_return_value);
1101         else
1102                 *value = !!(return_value.devices & device);
1103
1104         return status;
1105 }
1106
1107 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1108 {
1109         u16 device;
1110
1111         switch (cap) {
1112         case ACER_CAP_WIRELESS:
1113                 device = ACER_WMID3_GDS_WIRELESS;
1114                 break;
1115         case ACER_CAP_BLUETOOTH:
1116                 device = ACER_WMID3_GDS_BLUETOOTH;
1117                 break;
1118         case ACER_CAP_THREEG:
1119                 device = ACER_WMID3_GDS_THREEG;
1120                 break;
1121         default:
1122                 return AE_ERROR;
1123         }
1124         return wmid3_get_device_status(value, device);
1125 }
1126
1127 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1128 {
1129         struct wmid3_gds_return_value return_value;
1130         acpi_status status;
1131         union acpi_object *obj;
1132         u16 devices;
1133         struct wmid3_gds_get_input_param get_params = {
1134                 .function_num = 0x1,
1135                 .hotkey_number = commun_fn_key_number,
1136                 .devices = commun_func_bitmap,
1137         };
1138         struct acpi_buffer get_input = {
1139                 sizeof(struct wmid3_gds_get_input_param),
1140                 &get_params
1141         };
1142         struct wmid3_gds_set_input_param set_params = {
1143                 .function_num = 0x2,
1144                 .hotkey_number = commun_fn_key_number,
1145                 .devices = commun_func_bitmap,
1146         };
1147         struct acpi_buffer set_input = {
1148                 sizeof(struct wmid3_gds_set_input_param),
1149                 &set_params
1150         };
1151         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1152         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1153
1154         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1155         if (ACPI_FAILURE(status))
1156                 return status;
1157
1158         obj = output.pointer;
1159
1160         if (!obj)
1161                 return AE_ERROR;
1162         else if (obj->type != ACPI_TYPE_BUFFER) {
1163                 kfree(obj);
1164                 return AE_ERROR;
1165         }
1166         if (obj->buffer.length != 8) {
1167                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1168                 kfree(obj);
1169                 return AE_ERROR;
1170         }
1171
1172         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1173         kfree(obj);
1174
1175         if (return_value.error_code || return_value.ec_return_value) {
1176                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1177                         return_value.error_code,
1178                         return_value.ec_return_value);
1179                 return status;
1180         }
1181
1182         devices = return_value.devices;
1183         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1184
1185         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1186         if (ACPI_FAILURE(status))
1187                 return status;
1188
1189         obj = output2.pointer;
1190
1191         if (!obj)
1192                 return AE_ERROR;
1193         else if (obj->type != ACPI_TYPE_BUFFER) {
1194                 kfree(obj);
1195                 return AE_ERROR;
1196         }
1197         if (obj->buffer.length != 4) {
1198                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1199                 kfree(obj);
1200                 return AE_ERROR;
1201         }
1202
1203         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1204         kfree(obj);
1205
1206         if (return_value.error_code || return_value.ec_return_value)
1207                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1208                         return_value.error_code,
1209                         return_value.ec_return_value);
1210
1211         return status;
1212 }
1213
1214 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1215 {
1216         u16 device;
1217
1218         switch (cap) {
1219         case ACER_CAP_WIRELESS:
1220                 device = ACER_WMID3_GDS_WIRELESS;
1221                 break;
1222         case ACER_CAP_BLUETOOTH:
1223                 device = ACER_WMID3_GDS_BLUETOOTH;
1224                 break;
1225         case ACER_CAP_THREEG:
1226                 device = ACER_WMID3_GDS_THREEG;
1227                 break;
1228         default:
1229                 return AE_ERROR;
1230         }
1231         return wmid3_set_device_status(value, device);
1232 }
1233
1234 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1235 {
1236         struct hotkey_function_type_aa *type_aa;
1237
1238         /* We are looking for OEM-specific Type AAh */
1239         if (header->type != 0xAA)
1240                 return;
1241
1242         has_type_aa = true;
1243         type_aa = (struct hotkey_function_type_aa *) header;
1244
1245         pr_info("Function bitmap for Communication Button: 0x%x\n",
1246                 type_aa->commun_func_bitmap);
1247         commun_func_bitmap = type_aa->commun_func_bitmap;
1248
1249         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1250                 interface->capability |= ACER_CAP_WIRELESS;
1251         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1252                 interface->capability |= ACER_CAP_THREEG;
1253         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1254                 interface->capability |= ACER_CAP_BLUETOOTH;
1255
1256         commun_fn_key_number = type_aa->commun_fn_key_number;
1257 }
1258
1259 static acpi_status __init WMID_set_capabilities(void)
1260 {
1261         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1262         union acpi_object *obj;
1263         acpi_status status;
1264         u32 devices;
1265
1266         status = wmi_query_block(WMID_GUID2, 1, &out);
1267         if (ACPI_FAILURE(status))
1268                 return status;
1269
1270         obj = (union acpi_object *) out.pointer;
1271         if (obj) {
1272                 if (obj->type == ACPI_TYPE_BUFFER &&
1273                         (obj->buffer.length == sizeof(u32) ||
1274                         obj->buffer.length == sizeof(u64))) {
1275                         devices = *((u32 *) obj->buffer.pointer);
1276                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1277                         devices = (u32) obj->integer.value;
1278                 } else {
1279                         kfree(out.pointer);
1280                         return AE_ERROR;
1281                 }
1282         } else {
1283                 kfree(out.pointer);
1284                 return AE_ERROR;
1285         }
1286
1287         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1288         if (devices & 0x07)
1289                 interface->capability |= ACER_CAP_WIRELESS;
1290         if (devices & 0x40)
1291                 interface->capability |= ACER_CAP_THREEG;
1292         if (devices & 0x10)
1293                 interface->capability |= ACER_CAP_BLUETOOTH;
1294
1295         if (!(devices & 0x20))
1296                 max_brightness = 0x9;
1297
1298         kfree(out.pointer);
1299         return status;
1300 }
1301
1302 static struct wmi_interface wmid_interface = {
1303         .type = ACER_WMID,
1304 };
1305
1306 static struct wmi_interface wmid_v2_interface = {
1307         .type = ACER_WMID_v2,
1308 };
1309
1310 /*
1311  * Generic Device (interface-independent)
1312  */
1313
1314 static acpi_status get_u32(u32 *value, u32 cap)
1315 {
1316         acpi_status status = AE_ERROR;
1317
1318         switch (interface->type) {
1319         case ACER_AMW0:
1320                 status = AMW0_get_u32(value, cap);
1321                 break;
1322         case ACER_AMW0_V2:
1323                 if (cap == ACER_CAP_MAILLED) {
1324                         status = AMW0_get_u32(value, cap);
1325                         break;
1326                 }
1327         case ACER_WMID:
1328                 status = WMID_get_u32(value, cap);
1329                 break;
1330         case ACER_WMID_v2:
1331                 if (cap & (ACER_CAP_WIRELESS |
1332                            ACER_CAP_BLUETOOTH |
1333                            ACER_CAP_THREEG))
1334                         status = wmid_v2_get_u32(value, cap);
1335                 else if (wmi_has_guid(WMID_GUID2))
1336                         status = WMID_get_u32(value, cap);
1337                 break;
1338         }
1339
1340         return status;
1341 }
1342
1343 static acpi_status set_u32(u32 value, u32 cap)
1344 {
1345         acpi_status status;
1346
1347         if (interface->capability & cap) {
1348                 switch (interface->type) {
1349                 case ACER_AMW0:
1350                         return AMW0_set_u32(value, cap);
1351                 case ACER_AMW0_V2:
1352                         if (cap == ACER_CAP_MAILLED)
1353                                 return AMW0_set_u32(value, cap);
1354
1355                         /*
1356                          * On some models, some WMID methods don't toggle
1357                          * properly. For those cases, we want to run the AMW0
1358                          * method afterwards to be certain we've really toggled
1359                          * the device state.
1360                          */
1361                         if (cap == ACER_CAP_WIRELESS ||
1362                                 cap == ACER_CAP_BLUETOOTH) {
1363                                 status = WMID_set_u32(value, cap);
1364                                 if (ACPI_FAILURE(status))
1365                                         return status;
1366
1367                                 return AMW0_set_u32(value, cap);
1368                         }
1369                 case ACER_WMID:
1370                         return WMID_set_u32(value, cap);
1371                 case ACER_WMID_v2:
1372                         if (cap & (ACER_CAP_WIRELESS |
1373                                    ACER_CAP_BLUETOOTH |
1374                                    ACER_CAP_THREEG))
1375                                 return wmid_v2_set_u32(value, cap);
1376                         else if (wmi_has_guid(WMID_GUID2))
1377                                 return WMID_set_u32(value, cap);
1378                 default:
1379                         return AE_BAD_PARAMETER;
1380                 }
1381         }
1382         return AE_BAD_PARAMETER;
1383 }
1384
1385 static void __init acer_commandline_init(void)
1386 {
1387         /*
1388          * These will all fail silently if the value given is invalid, or the
1389          * capability isn't available on the given interface
1390          */
1391         if (mailled >= 0)
1392                 set_u32(mailled, ACER_CAP_MAILLED);
1393         if (!has_type_aa && threeg >= 0)
1394                 set_u32(threeg, ACER_CAP_THREEG);
1395         if (brightness >= 0)
1396                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1397 }
1398
1399 /*
1400  * LED device (Mail LED only, no other LEDs known yet)
1401  */
1402 static void mail_led_set(struct led_classdev *led_cdev,
1403 enum led_brightness value)
1404 {
1405         set_u32(value, ACER_CAP_MAILLED);
1406 }
1407
1408 static struct led_classdev mail_led = {
1409         .name = "acer-wmi::mail",
1410         .brightness_set = mail_led_set,
1411 };
1412
1413 static int acer_led_init(struct device *dev)
1414 {
1415         return led_classdev_register(dev, &mail_led);
1416 }
1417
1418 static void acer_led_exit(void)
1419 {
1420         set_u32(LED_OFF, ACER_CAP_MAILLED);
1421         led_classdev_unregister(&mail_led);
1422 }
1423
1424 /*
1425  * Backlight device
1426  */
1427 static struct backlight_device *acer_backlight_device;
1428
1429 static int read_brightness(struct backlight_device *bd)
1430 {
1431         u32 value;
1432         get_u32(&value, ACER_CAP_BRIGHTNESS);
1433         return value;
1434 }
1435
1436 static int update_bl_status(struct backlight_device *bd)
1437 {
1438         int intensity = bd->props.brightness;
1439
1440         if (bd->props.power != FB_BLANK_UNBLANK)
1441                 intensity = 0;
1442         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1443                 intensity = 0;
1444
1445         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1446
1447         return 0;
1448 }
1449
1450 static const struct backlight_ops acer_bl_ops = {
1451         .get_brightness = read_brightness,
1452         .update_status = update_bl_status,
1453 };
1454
1455 static int acer_backlight_init(struct device *dev)
1456 {
1457         struct backlight_properties props;
1458         struct backlight_device *bd;
1459
1460         memset(&props, 0, sizeof(struct backlight_properties));
1461         props.type = BACKLIGHT_PLATFORM;
1462         props.max_brightness = max_brightness;
1463         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1464                                        &props);
1465         if (IS_ERR(bd)) {
1466                 pr_err("Could not register Acer backlight device\n");
1467                 acer_backlight_device = NULL;
1468                 return PTR_ERR(bd);
1469         }
1470
1471         acer_backlight_device = bd;
1472
1473         bd->props.power = FB_BLANK_UNBLANK;
1474         bd->props.brightness = read_brightness(bd);
1475         backlight_update_status(bd);
1476         return 0;
1477 }
1478
1479 static void acer_backlight_exit(void)
1480 {
1481         backlight_device_unregister(acer_backlight_device);
1482 }
1483
1484 /*
1485  * Accelerometer device
1486  */
1487 static acpi_handle gsensor_handle;
1488
1489 static int acer_gsensor_init(void)
1490 {
1491         acpi_status status;
1492         struct acpi_buffer output;
1493         union acpi_object out_obj;
1494
1495         output.length = sizeof(out_obj);
1496         output.pointer = &out_obj;
1497         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1498         if (ACPI_FAILURE(status))
1499                 return -1;
1500
1501         return 0;
1502 }
1503
1504 static int acer_gsensor_open(struct input_dev *input)
1505 {
1506         return acer_gsensor_init();
1507 }
1508
1509 static int acer_gsensor_event(void)
1510 {
1511         acpi_status status;
1512         struct acpi_buffer output;
1513         union acpi_object out_obj[5];
1514
1515         if (!has_cap(ACER_CAP_ACCEL))
1516                 return -1;
1517
1518         output.length = sizeof(out_obj);
1519         output.pointer = out_obj;
1520
1521         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1522         if (ACPI_FAILURE(status))
1523                 return -1;
1524
1525         if (out_obj->package.count != 4)
1526                 return -1;
1527
1528         input_report_abs(acer_wmi_accel_dev, ABS_X,
1529                 (s16)out_obj->package.elements[0].integer.value);
1530         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1531                 (s16)out_obj->package.elements[1].integer.value);
1532         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1533                 (s16)out_obj->package.elements[2].integer.value);
1534         input_sync(acer_wmi_accel_dev);
1535         return 0;
1536 }
1537
1538 /*
1539  * Rfkill devices
1540  */
1541 static void acer_rfkill_update(struct work_struct *ignored);
1542 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1543 static void acer_rfkill_update(struct work_struct *ignored)
1544 {
1545         u32 state;
1546         acpi_status status;
1547
1548         if (has_cap(ACER_CAP_WIRELESS)) {
1549                 status = get_u32(&state, ACER_CAP_WIRELESS);
1550                 if (ACPI_SUCCESS(status)) {
1551                         if (quirks->wireless == 3)
1552                                 rfkill_set_hw_state(wireless_rfkill, !state);
1553                         else
1554                                 rfkill_set_sw_state(wireless_rfkill, !state);
1555                 }
1556         }
1557
1558         if (has_cap(ACER_CAP_BLUETOOTH)) {
1559                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1560                 if (ACPI_SUCCESS(status))
1561                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1562         }
1563
1564         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1565                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1566                 if (ACPI_SUCCESS(status))
1567                         rfkill_set_sw_state(threeg_rfkill, !state);
1568         }
1569
1570         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1571 }
1572
1573 static int acer_rfkill_set(void *data, bool blocked)
1574 {
1575         acpi_status status;
1576         u32 cap = (unsigned long)data;
1577
1578         if (rfkill_inited) {
1579                 status = set_u32(!blocked, cap);
1580                 if (ACPI_FAILURE(status))
1581                         return -ENODEV;
1582         }
1583
1584         return 0;
1585 }
1586
1587 static const struct rfkill_ops acer_rfkill_ops = {
1588         .set_block = acer_rfkill_set,
1589 };
1590
1591 static struct rfkill *acer_rfkill_register(struct device *dev,
1592                                            enum rfkill_type type,
1593                                            char *name, u32 cap)
1594 {
1595         int err;
1596         struct rfkill *rfkill_dev;
1597         u32 state;
1598         acpi_status status;
1599
1600         rfkill_dev = rfkill_alloc(name, dev, type,
1601                                   &acer_rfkill_ops,
1602                                   (void *)(unsigned long)cap);
1603         if (!rfkill_dev)
1604                 return ERR_PTR(-ENOMEM);
1605
1606         status = get_u32(&state, cap);
1607
1608         err = rfkill_register(rfkill_dev);
1609         if (err) {
1610                 rfkill_destroy(rfkill_dev);
1611                 return ERR_PTR(err);
1612         }
1613
1614         if (ACPI_SUCCESS(status))
1615                 rfkill_set_sw_state(rfkill_dev, !state);
1616
1617         return rfkill_dev;
1618 }
1619
1620 static int acer_rfkill_init(struct device *dev)
1621 {
1622         int err;
1623
1624         if (has_cap(ACER_CAP_WIRELESS)) {
1625                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1626                         "acer-wireless", ACER_CAP_WIRELESS);
1627                 if (IS_ERR(wireless_rfkill)) {
1628                         err = PTR_ERR(wireless_rfkill);
1629                         goto error_wireless;
1630                 }
1631         }
1632
1633         if (has_cap(ACER_CAP_BLUETOOTH)) {
1634                 bluetooth_rfkill = acer_rfkill_register(dev,
1635                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1636                         ACER_CAP_BLUETOOTH);
1637                 if (IS_ERR(bluetooth_rfkill)) {
1638                         err = PTR_ERR(bluetooth_rfkill);
1639                         goto error_bluetooth;
1640                 }
1641         }
1642
1643         if (has_cap(ACER_CAP_THREEG)) {
1644                 threeg_rfkill = acer_rfkill_register(dev,
1645                         RFKILL_TYPE_WWAN, "acer-threeg",
1646                         ACER_CAP_THREEG);
1647                 if (IS_ERR(threeg_rfkill)) {
1648                         err = PTR_ERR(threeg_rfkill);
1649                         goto error_threeg;
1650                 }
1651         }
1652
1653         rfkill_inited = true;
1654
1655         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1656             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1657                 schedule_delayed_work(&acer_rfkill_work,
1658                         round_jiffies_relative(HZ));
1659
1660         return 0;
1661
1662 error_threeg:
1663         if (has_cap(ACER_CAP_BLUETOOTH)) {
1664                 rfkill_unregister(bluetooth_rfkill);
1665                 rfkill_destroy(bluetooth_rfkill);
1666         }
1667 error_bluetooth:
1668         if (has_cap(ACER_CAP_WIRELESS)) {
1669                 rfkill_unregister(wireless_rfkill);
1670                 rfkill_destroy(wireless_rfkill);
1671         }
1672 error_wireless:
1673         return err;
1674 }
1675
1676 static void acer_rfkill_exit(void)
1677 {
1678         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1679             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1680                 cancel_delayed_work_sync(&acer_rfkill_work);
1681
1682         if (has_cap(ACER_CAP_WIRELESS)) {
1683                 rfkill_unregister(wireless_rfkill);
1684                 rfkill_destroy(wireless_rfkill);
1685         }
1686
1687         if (has_cap(ACER_CAP_BLUETOOTH)) {
1688                 rfkill_unregister(bluetooth_rfkill);
1689                 rfkill_destroy(bluetooth_rfkill);
1690         }
1691
1692         if (has_cap(ACER_CAP_THREEG)) {
1693                 rfkill_unregister(threeg_rfkill);
1694                 rfkill_destroy(threeg_rfkill);
1695         }
1696         return;
1697 }
1698
1699 static void acer_wmi_notify(u32 value, void *context)
1700 {
1701         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1702         union acpi_object *obj;
1703         struct event_return_value return_value;
1704         acpi_status status;
1705         u16 device_state;
1706         const struct key_entry *key;
1707         u32 scancode;
1708
1709         status = wmi_get_event_data(value, &response);
1710         if (status != AE_OK) {
1711                 pr_warn("bad event status 0x%x\n", status);
1712                 return;
1713         }
1714
1715         obj = (union acpi_object *)response.pointer;
1716
1717         if (!obj)
1718                 return;
1719         if (obj->type != ACPI_TYPE_BUFFER) {
1720                 pr_warn("Unknown response received %d\n", obj->type);
1721                 kfree(obj);
1722                 return;
1723         }
1724         if (obj->buffer.length != 8) {
1725                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1726                 kfree(obj);
1727                 return;
1728         }
1729
1730         return_value = *((struct event_return_value *)obj->buffer.pointer);
1731         kfree(obj);
1732
1733         switch (return_value.function) {
1734         case WMID_HOTKEY_EVENT:
1735                 device_state = return_value.device_state;
1736                 pr_debug("device state: 0x%x\n", device_state);
1737
1738                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1739                                                         return_value.key_num);
1740                 if (!key) {
1741                         pr_warn("Unknown key number - 0x%x\n",
1742                                 return_value.key_num);
1743                 } else {
1744                         scancode = return_value.key_num;
1745                         switch (key->keycode) {
1746                         case KEY_WLAN:
1747                         case KEY_BLUETOOTH:
1748                                 if (has_cap(ACER_CAP_WIRELESS))
1749                                         rfkill_set_sw_state(wireless_rfkill,
1750                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1751                                 if (has_cap(ACER_CAP_THREEG))
1752                                         rfkill_set_sw_state(threeg_rfkill,
1753                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1754                                 if (has_cap(ACER_CAP_BLUETOOTH))
1755                                         rfkill_set_sw_state(bluetooth_rfkill,
1756                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1757                                 break;
1758                         case KEY_TOUCHPAD_TOGGLE:
1759                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1760                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1761                         }
1762                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1763                 }
1764                 break;
1765         case WMID_ACCEL_EVENT:
1766                 acer_gsensor_event();
1767                 break;
1768         default:
1769                 pr_warn("Unknown function number - %d - %d\n",
1770                         return_value.function, return_value.key_num);
1771                 break;
1772         }
1773 }
1774
1775 static acpi_status __init
1776 wmid3_set_lm_mode(struct lm_input_params *params,
1777                   struct lm_return_value *return_value)
1778 {
1779         acpi_status status;
1780         union acpi_object *obj;
1781
1782         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1783         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1784
1785         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1786         if (ACPI_FAILURE(status))
1787                 return status;
1788
1789         obj = output.pointer;
1790
1791         if (!obj)
1792                 return AE_ERROR;
1793         else if (obj->type != ACPI_TYPE_BUFFER) {
1794                 kfree(obj);
1795                 return AE_ERROR;
1796         }
1797         if (obj->buffer.length != 4) {
1798                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1799                 kfree(obj);
1800                 return AE_ERROR;
1801         }
1802
1803         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1804         kfree(obj);
1805
1806         return status;
1807 }
1808
1809 static int __init acer_wmi_enable_ec_raw(void)
1810 {
1811         struct lm_return_value return_value;
1812         acpi_status status;
1813         struct lm_input_params params = {
1814                 .function_num = 0x1,
1815                 .commun_devices = 0xFFFF,
1816                 .devices = 0xFFFF,
1817                 .lm_status = 0x00,            /* Launch Manager Deactive */
1818         };
1819
1820         status = wmid3_set_lm_mode(&params, &return_value);
1821
1822         if (return_value.error_code || return_value.ec_return_value)
1823                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1824                         return_value.error_code,
1825                         return_value.ec_return_value);
1826         else
1827                 pr_info("Enabled EC raw mode\n");
1828
1829         return status;
1830 }
1831
1832 static int __init acer_wmi_enable_lm(void)
1833 {
1834         struct lm_return_value return_value;
1835         acpi_status status;
1836         struct lm_input_params params = {
1837                 .function_num = 0x1,
1838                 .commun_devices = 0xFFFF,
1839                 .devices = 0xFFFF,
1840                 .lm_status = 0x01,            /* Launch Manager Active */
1841         };
1842
1843         status = wmid3_set_lm_mode(&params, &return_value);
1844
1845         if (return_value.error_code || return_value.ec_return_value)
1846                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1847                         return_value.error_code,
1848                         return_value.ec_return_value);
1849
1850         return status;
1851 }
1852
1853 #define ACER_WMID_ACCEL_HID     "BST0001"
1854
1855 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1856                                                 void *ctx, void **retval)
1857 {
1858         struct acpi_device *dev;
1859
1860         if (!strcmp(ctx, "SENR")) {
1861                 if (acpi_bus_get_device(ah, &dev))
1862                         return AE_OK;
1863                 if (strcmp(ACER_WMID_ACCEL_HID, acpi_device_hid(dev)))
1864                         return AE_OK;
1865         } else
1866                 return AE_OK;
1867
1868         *(acpi_handle *)retval = ah;
1869
1870         return AE_CTRL_TERMINATE;
1871 }
1872
1873 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1874                                         acpi_handle *ah)
1875 {
1876         acpi_status status;
1877         acpi_handle handle;
1878
1879         BUG_ON(!name || !ah);
1880
1881         handle = NULL;
1882         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1883                                         (void *)name, &handle);
1884         if (ACPI_SUCCESS(status) && handle) {
1885                 *ah = handle;
1886                 return 0;
1887         } else {
1888                 return -ENODEV;
1889         }
1890 }
1891
1892 static int __init acer_wmi_accel_setup(void)
1893 {
1894         int err;
1895
1896         err = acer_wmi_get_handle("SENR", ACER_WMID_ACCEL_HID, &gsensor_handle);
1897         if (err)
1898                 return err;
1899
1900         interface->capability |= ACER_CAP_ACCEL;
1901
1902         acer_wmi_accel_dev = input_allocate_device();
1903         if (!acer_wmi_accel_dev)
1904                 return -ENOMEM;
1905
1906         acer_wmi_accel_dev->open = acer_gsensor_open;
1907
1908         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1909         acer_wmi_accel_dev->phys = "wmi/input1";
1910         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1911         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1912         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1913         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1914         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1915
1916         err = input_register_device(acer_wmi_accel_dev);
1917         if (err)
1918                 goto err_free_dev;
1919
1920         return 0;
1921
1922 err_free_dev:
1923         input_free_device(acer_wmi_accel_dev);
1924         return err;
1925 }
1926
1927 static void acer_wmi_accel_destroy(void)
1928 {
1929         input_unregister_device(acer_wmi_accel_dev);
1930 }
1931
1932 static int __init acer_wmi_input_setup(void)
1933 {
1934         acpi_status status;
1935         int err;
1936
1937         acer_wmi_input_dev = input_allocate_device();
1938         if (!acer_wmi_input_dev)
1939                 return -ENOMEM;
1940
1941         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1942         acer_wmi_input_dev->phys = "wmi/input0";
1943         acer_wmi_input_dev->id.bustype = BUS_HOST;
1944
1945         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1946         if (err)
1947                 goto err_free_dev;
1948
1949         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1950                                                 acer_wmi_notify, NULL);
1951         if (ACPI_FAILURE(status)) {
1952                 err = -EIO;
1953                 goto err_free_keymap;
1954         }
1955
1956         err = input_register_device(acer_wmi_input_dev);
1957         if (err)
1958                 goto err_uninstall_notifier;
1959
1960         return 0;
1961
1962 err_uninstall_notifier:
1963         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1964 err_free_keymap:
1965         sparse_keymap_free(acer_wmi_input_dev);
1966 err_free_dev:
1967         input_free_device(acer_wmi_input_dev);
1968         return err;
1969 }
1970
1971 static void acer_wmi_input_destroy(void)
1972 {
1973         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1974         sparse_keymap_free(acer_wmi_input_dev);
1975         input_unregister_device(acer_wmi_input_dev);
1976 }
1977
1978 /*
1979  * debugfs functions
1980  */
1981 static u32 get_wmid_devices(void)
1982 {
1983         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1984         union acpi_object *obj;
1985         acpi_status status;
1986         u32 devices = 0;
1987
1988         status = wmi_query_block(WMID_GUID2, 1, &out);
1989         if (ACPI_FAILURE(status))
1990                 return 0;
1991
1992         obj = (union acpi_object *) out.pointer;
1993         if (obj) {
1994                 if (obj->type == ACPI_TYPE_BUFFER &&
1995                         (obj->buffer.length == sizeof(u32) ||
1996                         obj->buffer.length == sizeof(u64))) {
1997                         devices = *((u32 *) obj->buffer.pointer);
1998                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1999                         devices = (u32) obj->integer.value;
2000                 }
2001         }
2002
2003         kfree(out.pointer);
2004         return devices;
2005 }
2006
2007 /*
2008  * Platform device
2009  */
2010 static int acer_platform_probe(struct platform_device *device)
2011 {
2012         int err;
2013
2014         if (has_cap(ACER_CAP_MAILLED)) {
2015                 err = acer_led_init(&device->dev);
2016                 if (err)
2017                         goto error_mailled;
2018         }
2019
2020         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2021                 err = acer_backlight_init(&device->dev);
2022                 if (err)
2023                         goto error_brightness;
2024         }
2025
2026         err = acer_rfkill_init(&device->dev);
2027         if (err)
2028                 goto error_rfkill;
2029
2030         return err;
2031
2032 error_rfkill:
2033         if (has_cap(ACER_CAP_BRIGHTNESS))
2034                 acer_backlight_exit();
2035 error_brightness:
2036         if (has_cap(ACER_CAP_MAILLED))
2037                 acer_led_exit();
2038 error_mailled:
2039         return err;
2040 }
2041
2042 static int acer_platform_remove(struct platform_device *device)
2043 {
2044         if (has_cap(ACER_CAP_MAILLED))
2045                 acer_led_exit();
2046         if (has_cap(ACER_CAP_BRIGHTNESS))
2047                 acer_backlight_exit();
2048
2049         acer_rfkill_exit();
2050         return 0;
2051 }
2052
2053 #ifdef CONFIG_PM_SLEEP
2054 static int acer_suspend(struct device *dev)
2055 {
2056         u32 value;
2057         struct acer_data *data = &interface->data;
2058
2059         if (!data)
2060                 return -ENOMEM;
2061
2062         if (has_cap(ACER_CAP_MAILLED)) {
2063                 get_u32(&value, ACER_CAP_MAILLED);
2064                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2065                 data->mailled = value;
2066         }
2067
2068         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2069                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2070                 data->brightness = value;
2071         }
2072
2073         return 0;
2074 }
2075
2076 static int acer_resume(struct device *dev)
2077 {
2078         struct acer_data *data = &interface->data;
2079
2080         if (!data)
2081                 return -ENOMEM;
2082
2083         if (has_cap(ACER_CAP_MAILLED))
2084                 set_u32(data->mailled, ACER_CAP_MAILLED);
2085
2086         if (has_cap(ACER_CAP_BRIGHTNESS))
2087                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2088
2089         if (has_cap(ACER_CAP_ACCEL))
2090                 acer_gsensor_init();
2091
2092         return 0;
2093 }
2094 #else
2095 #define acer_suspend    NULL
2096 #define acer_resume     NULL
2097 #endif
2098
2099 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2100
2101 static void acer_platform_shutdown(struct platform_device *device)
2102 {
2103         struct acer_data *data = &interface->data;
2104
2105         if (!data)
2106                 return;
2107
2108         if (has_cap(ACER_CAP_MAILLED))
2109                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2110 }
2111
2112 static struct platform_driver acer_platform_driver = {
2113         .driver = {
2114                 .name = "acer-wmi",
2115                 .pm = &acer_pm,
2116         },
2117         .probe = acer_platform_probe,
2118         .remove = acer_platform_remove,
2119         .shutdown = acer_platform_shutdown,
2120 };
2121
2122 static struct platform_device *acer_platform_device;
2123
2124 static void remove_debugfs(void)
2125 {
2126         debugfs_remove(interface->debug.devices);
2127         debugfs_remove(interface->debug.root);
2128 }
2129
2130 static int __init create_debugfs(void)
2131 {
2132         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2133         if (!interface->debug.root) {
2134                 pr_err("Failed to create debugfs directory");
2135                 return -ENOMEM;
2136         }
2137
2138         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2139                                         interface->debug.root,
2140                                         &interface->debug.wmid_devices);
2141         if (!interface->debug.devices)
2142                 goto error_debugfs;
2143
2144         return 0;
2145
2146 error_debugfs:
2147         remove_debugfs();
2148         return -ENOMEM;
2149 }
2150
2151 static int __init acer_wmi_init(void)
2152 {
2153         int err;
2154
2155         pr_info("Acer Laptop ACPI-WMI Extras\n");
2156
2157         if (dmi_check_system(acer_blacklist)) {
2158                 pr_info("Blacklisted hardware detected - not loading\n");
2159                 return -ENODEV;
2160         }
2161
2162         find_quirks();
2163
2164         /*
2165          * The AMW0_GUID1 wmi is not only found on Acer family but also other
2166          * machines like Lenovo, Fujitsu and Medion. In the past days,
2167          * acer-wmi driver handled those non-Acer machines by quirks list.
2168          * But actually acer-wmi driver was loaded on any machines that have
2169          * AMW0_GUID1. This behavior is strange because those machines should
2170          * be supported by appropriate wmi drivers. e.g. fujitsu-laptop,
2171          * ideapad-laptop. So, here checks the machine that has AMW0_GUID1
2172          * should be in Acer/Gateway/Packard Bell white list, or it's already
2173          * in the past quirk list.
2174          */
2175         if (wmi_has_guid(AMW0_GUID1) &&
2176             !dmi_check_system(amw0_whitelist) &&
2177             quirks == &quirk_unknown) {
2178                 pr_err("Unsupported machine has AMW0_GUID1, unable to load\n");
2179                 return -ENODEV;
2180         }
2181
2182         /*
2183          * Detect which ACPI-WMI interface we're using.
2184          */
2185         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2186                 interface = &AMW0_V2_interface;
2187
2188         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2189                 interface = &wmid_interface;
2190
2191         if (wmi_has_guid(WMID_GUID3))
2192                 interface = &wmid_v2_interface;
2193
2194         if (interface)
2195                 dmi_walk(type_aa_dmi_decode, NULL);
2196
2197         if (wmi_has_guid(WMID_GUID2) && interface) {
2198                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2199                         pr_err("Unable to detect available WMID devices\n");
2200                         return -ENODEV;
2201                 }
2202                 /* WMID always provides brightness methods */
2203                 interface->capability |= ACER_CAP_BRIGHTNESS;
2204         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa && force_caps == -1) {
2205                 pr_err("No WMID device detection method found\n");
2206                 return -ENODEV;
2207         }
2208
2209         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2210                 interface = &AMW0_interface;
2211
2212                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2213                         pr_err("Unable to detect available AMW0 devices\n");
2214                         return -ENODEV;
2215                 }
2216         }
2217
2218         if (wmi_has_guid(AMW0_GUID1))
2219                 AMW0_find_mailled();
2220
2221         if (!interface) {
2222                 pr_err("No or unsupported WMI interface, unable to load\n");
2223                 return -ENODEV;
2224         }
2225
2226         set_quirks();
2227
2228         if (dmi_check_system(video_vendor_dmi_table))
2229                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2230
2231         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2232                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2233
2234         if (force_caps != -1)
2235                 interface->capability = force_caps;
2236
2237         if (wmi_has_guid(WMID_GUID3)) {
2238                 if (ec_raw_mode) {
2239                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2240                                 pr_err("Cannot enable EC raw mode\n");
2241                                 return -ENODEV;
2242                         }
2243                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2244                         pr_err("Cannot enable Launch Manager mode\n");
2245                         return -ENODEV;
2246                 }
2247         } else if (ec_raw_mode) {
2248                 pr_info("No WMID EC raw mode enable method\n");
2249         }
2250
2251         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2252                 err = acer_wmi_input_setup();
2253                 if (err)
2254                         return err;
2255                 err = acer_wmi_accel_setup();
2256                 if (err && err != -ENODEV)
2257                         pr_warn("Cannot enable accelerometer\n");
2258         }
2259
2260         err = platform_driver_register(&acer_platform_driver);
2261         if (err) {
2262                 pr_err("Unable to register platform driver\n");
2263                 goto error_platform_register;
2264         }
2265
2266         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2267         if (!acer_platform_device) {
2268                 err = -ENOMEM;
2269                 goto error_device_alloc;
2270         }
2271
2272         err = platform_device_add(acer_platform_device);
2273         if (err)
2274                 goto error_device_add;
2275
2276         if (wmi_has_guid(WMID_GUID2)) {
2277                 interface->debug.wmid_devices = get_wmid_devices();
2278                 err = create_debugfs();
2279                 if (err)
2280                         goto error_create_debugfs;
2281         }
2282
2283         /* Override any initial settings with values from the commandline */
2284         acer_commandline_init();
2285
2286         return 0;
2287
2288 error_create_debugfs:
2289         platform_device_del(acer_platform_device);
2290 error_device_add:
2291         platform_device_put(acer_platform_device);
2292 error_device_alloc:
2293         platform_driver_unregister(&acer_platform_driver);
2294 error_platform_register:
2295         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2296                 acer_wmi_input_destroy();
2297         if (has_cap(ACER_CAP_ACCEL))
2298                 acer_wmi_accel_destroy();
2299
2300         return err;
2301 }
2302
2303 static void __exit acer_wmi_exit(void)
2304 {
2305         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2306                 acer_wmi_input_destroy();
2307
2308         if (has_cap(ACER_CAP_ACCEL))
2309                 acer_wmi_accel_destroy();
2310
2311         remove_debugfs();
2312         platform_device_unregister(acer_platform_device);
2313         platform_driver_unregister(&acer_platform_driver);
2314
2315         pr_info("Acer Laptop WMI Extras unloaded\n");
2316         return;
2317 }
2318
2319 module_init(acer_wmi_init);
2320 module_exit(acer_wmi_exit);