drivers/platform/x86/acer-wmi.c

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