kernel/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 int AMW0_set_cap_acpi_check_device_found __initdata;
 797
 798 static acpi_status __init AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
 799         u32 level, void *context, void **retval)
 800 {
 801         AMW0_set_cap_acpi_check_device_found = 1;
 802         return AE_OK;
 803 }
 804
 805 static const struct acpi_device_id norfkill_ids[] __initconst = {
 806         { "VPC2004", 0},
 807         { "IBM0068", 0},
 808         { "LEN0068", 0},
 809         { "SNY5001", 0},        /* sony-laptop in charge */
 810         { "", 0},
 811 };
 812
 813 static int __init AMW0_set_cap_acpi_check_device(void)
 814 {
 815         const struct acpi_device_id *id;
 816
 817         for (id = norfkill_ids; id->id[0]; id++)
 818                 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
 819                                 NULL, NULL);
 820         return AMW0_set_cap_acpi_check_device_found;
 821 }
 822
 823 static acpi_status __init AMW0_set_capabilities(void)
 824 {
 825         struct wmab_args args;
 826         struct wmab_ret ret;
 827         acpi_status status;
 828         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 829         union acpi_object *obj;
 830
 831         /*
 832          * On laptops with this strange GUID (non Acer), normal probing doesn't
 833          * work.
 834          */
 835         if (wmi_has_guid(AMW0_GUID2)) {
 836                 if ((quirks != &quirk_unknown) ||
 837                     !AMW0_set_cap_acpi_check_device())
 838                         interface->capability |= ACER_CAP_WIRELESS;
 839                 return AE_OK;
 840         }
 841
 842         args.eax = ACER_AMW0_WRITE;
 843         args.ecx = args.edx = 0;
 844
 845         args.ebx = 0xa2 << 8;
 846         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 847
 848         status = wmab_execute(&args, &out);
 849         if (ACPI_FAILURE(status))
 850                 return status;
 851
 852         obj = out.pointer;
 853         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 854         obj->buffer.length == sizeof(struct wmab_ret)) {
 855                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 856         } else {
 857                 status = AE_ERROR;
 858                 goto out;
 859         }
 860
 861         if (ret.eax & 0x1)
 862                 interface->capability |= ACER_CAP_WIRELESS;
 863
 864         args.ebx = 2 << 8;
 865         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 866
 867         /*
 868          * It's ok to use existing buffer for next wmab_execute call.
 869          * But we need to kfree(out.pointer) if next wmab_execute fail.
 870          */
 871         status = wmab_execute(&args, &out);
 872         if (ACPI_FAILURE(status))
 873                 goto out;
 874
 875         obj = (union acpi_object *) out.pointer;
 876         if (obj && obj->type == ACPI_TYPE_BUFFER
 877         && obj->buffer.length == sizeof(struct wmab_ret)) {
 878                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 879         } else {
 880                 status = AE_ERROR;
 881                 goto out;
 882         }
 883
 884         if (ret.eax & 0x1)
 885                 interface->capability |= ACER_CAP_BLUETOOTH;
 886
 887         /*
 888          * This appears to be safe to enable, since all Wistron based laptops
 889          * appear to use the same EC register for brightness, even if they
 890          * differ for wireless, etc
 891          */
 892         if (quirks->brightness >= 0)
 893                 interface->capability |= ACER_CAP_BRIGHTNESS;
 894
 895         status = AE_OK;
 896 out:
 897         kfree(out.pointer);
 898         return status;
 899 }
 900
 901 static struct wmi_interface AMW0_interface = {
 902         .type = ACER_AMW0,
 903 };
 904
 905 static struct wmi_interface AMW0_V2_interface = {
 906         .type = ACER_AMW0_V2,
 907 };
 908
 909 /*
 910  * New interface (The WMID interface)
 911  */
 912 static acpi_status
 913 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 914 {
 915         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 916         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 917         union acpi_object *obj;
 918         u32 tmp = 0;
 919         acpi_status status;
 920
 921         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 922
 923         if (ACPI_FAILURE(status))
 924                 return status;
 925
 926         obj = (union acpi_object *) result.pointer;
 927         if (obj) {
 928                 if (obj->type == ACPI_TYPE_BUFFER &&
 929                         (obj->buffer.length == sizeof(u32) ||
 930                         obj->buffer.length == sizeof(u64))) {
 931                         tmp = *((u32 *) obj->buffer.pointer);
 932                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 933                         tmp = (u32) obj->integer.value;
 934                 }
 935         }
 936
 937         if (out)
 938                 *out = tmp;
 939
 940         kfree(result.pointer);
 941
 942         return status;
 943 }
 944
 945 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 946 {
 947         acpi_status status;
 948         u8 tmp;
 949         u32 result, method_id = 0;
 950
 951         switch (cap) {
 952         case ACER_CAP_WIRELESS:
 953                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 954                 break;
 955         case ACER_CAP_BLUETOOTH:
 956                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 957                 break;
 958         case ACER_CAP_BRIGHTNESS:
 959                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 960                 break;
 961         case ACER_CAP_THREEG:
 962                 method_id = ACER_WMID_GET_THREEG_METHODID;
 963                 break;
 964         case ACER_CAP_MAILLED:
 965                 if (quirks->mailled == 1) {
 966                         ec_read(0x9f, &tmp);
 967                         *value = tmp & 0x1;
 968                         return 0;
 969                 }
 970         default:
 971                 return AE_ERROR;
 972         }
 973         status = WMI_execute_u32(method_id, 0, &result);
 974
 975         if (ACPI_SUCCESS(status))
 976                 *value = (u8)result;
 977
 978         return status;
 979 }
 980
 981 static acpi_status WMID_set_u32(u32 value, u32 cap)
 982 {
 983         u32 method_id = 0;
 984         char param;
 985
 986         switch (cap) {
 987         case ACER_CAP_BRIGHTNESS:
 988                 if (value > max_brightness)
 989                         return AE_BAD_PARAMETER;
 990                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
 991                 break;
 992         case ACER_CAP_WIRELESS:
 993                 if (value > 1)
 994                         return AE_BAD_PARAMETER;
 995                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
 996                 break;
 997         case ACER_CAP_BLUETOOTH:
 998                 if (value > 1)
 999                         return AE_BAD_PARAMETER;
1000                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
1001                 break;
1002         case ACER_CAP_THREEG:
1003                 if (value > 1)
1004                         return AE_BAD_PARAMETER;
1005                 method_id = ACER_WMID_SET_THREEG_METHODID;
1006                 break;
1007         case ACER_CAP_MAILLED:
1008                 if (value > 1)
1009                         return AE_BAD_PARAMETER;
1010                 if (quirks->mailled == 1) {
1011                         param = value ? 0x92 : 0x93;
1012                         i8042_lock_chip();
1013                         i8042_command(&param, 0x1059);
1014                         i8042_unlock_chip();
1015                         return 0;
1016                 }
1017                 break;
1018         default:
1019                 return AE_ERROR;
1020         }
1021         return WMI_execute_u32(method_id, (u32)value, NULL);
1022 }
1023
1024 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1025 {
1026         struct wmid3_gds_return_value return_value;
1027         acpi_status status;
1028         union acpi_object *obj;
1029         struct wmid3_gds_get_input_param params = {
1030                 .function_num = 0x1,
1031                 .hotkey_number = commun_fn_key_number,
1032                 .devices = device,
1033         };
1034         struct acpi_buffer input = {
1035                 sizeof(struct wmid3_gds_get_input_param),
1036                 &params
1037         };
1038         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1039
1040         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1041         if (ACPI_FAILURE(status))
1042                 return status;
1043
1044         obj = output.pointer;
1045
1046         if (!obj)
1047                 return AE_ERROR;
1048         else if (obj->type != ACPI_TYPE_BUFFER) {
1049                 kfree(obj);
1050                 return AE_ERROR;
1051         }
1052         if (obj->buffer.length != 8) {
1053                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1054                 kfree(obj);
1055                 return AE_ERROR;
1056         }
1057
1058         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1059         kfree(obj);
1060
1061         if (return_value.error_code || return_value.ec_return_value)
1062                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1063                         device,
1064                         return_value.error_code,
1065                         return_value.ec_return_value);
1066         else
1067                 *value = !!(return_value.devices & device);
1068
1069         return status;
1070 }
1071
1072 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1073 {
1074         u16 device;
1075
1076         switch (cap) {
1077         case ACER_CAP_WIRELESS:
1078                 device = ACER_WMID3_GDS_WIRELESS;
1079                 break;
1080         case ACER_CAP_BLUETOOTH:
1081                 device = ACER_WMID3_GDS_BLUETOOTH;
1082                 break;
1083         case ACER_CAP_THREEG:
1084                 device = ACER_WMID3_GDS_THREEG;
1085                 break;
1086         default:
1087                 return AE_ERROR;
1088         }
1089         return wmid3_get_device_status(value, device);
1090 }
1091
1092 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1093 {
1094         struct wmid3_gds_return_value return_value;
1095         acpi_status status;
1096         union acpi_object *obj;
1097         u16 devices;
1098         struct wmid3_gds_get_input_param get_params = {
1099                 .function_num = 0x1,
1100                 .hotkey_number = commun_fn_key_number,
1101                 .devices = commun_func_bitmap,
1102         };
1103         struct acpi_buffer get_input = {
1104                 sizeof(struct wmid3_gds_get_input_param),
1105                 &get_params
1106         };
1107         struct wmid3_gds_set_input_param set_params = {
1108                 .function_num = 0x2,
1109                 .hotkey_number = commun_fn_key_number,
1110                 .devices = commun_func_bitmap,
1111         };
1112         struct acpi_buffer set_input = {
1113                 sizeof(struct wmid3_gds_set_input_param),
1114                 &set_params
1115         };
1116         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1117         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1118
1119         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1120         if (ACPI_FAILURE(status))
1121                 return status;
1122
1123         obj = output.pointer;
1124
1125         if (!obj)
1126                 return AE_ERROR;
1127         else if (obj->type != ACPI_TYPE_BUFFER) {
1128                 kfree(obj);
1129                 return AE_ERROR;
1130         }
1131         if (obj->buffer.length != 8) {
1132                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1133                 kfree(obj);
1134                 return AE_ERROR;
1135         }
1136
1137         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1138         kfree(obj);
1139
1140         if (return_value.error_code || return_value.ec_return_value) {
1141                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1142                         return_value.error_code,
1143                         return_value.ec_return_value);
1144                 return status;
1145         }
1146
1147         devices = return_value.devices;
1148         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1149
1150         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1151         if (ACPI_FAILURE(status))
1152                 return status;
1153
1154         obj = output2.pointer;
1155
1156         if (!obj)
1157                 return AE_ERROR;
1158         else if (obj->type != ACPI_TYPE_BUFFER) {
1159                 kfree(obj);
1160                 return AE_ERROR;
1161         }
1162         if (obj->buffer.length != 4) {
1163                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1164                 kfree(obj);
1165                 return AE_ERROR;
1166         }
1167
1168         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1169         kfree(obj);
1170
1171         if (return_value.error_code || return_value.ec_return_value)
1172                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1173                         return_value.error_code,
1174                         return_value.ec_return_value);
1175
1176         return status;
1177 }
1178
1179 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1180 {
1181         u16 device;
1182
1183         switch (cap) {
1184         case ACER_CAP_WIRELESS:
1185                 device = ACER_WMID3_GDS_WIRELESS;
1186                 break;
1187         case ACER_CAP_BLUETOOTH:
1188                 device = ACER_WMID3_GDS_BLUETOOTH;
1189                 break;
1190         case ACER_CAP_THREEG:
1191                 device = ACER_WMID3_GDS_THREEG;
1192                 break;
1193         default:
1194                 return AE_ERROR;
1195         }
1196         return wmid3_set_device_status(value, device);
1197 }
1198
1199 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1200 {
1201         struct hotkey_function_type_aa *type_aa;
1202
1203         /* We are looking for OEM-specific Type AAh */
1204         if (header->type != 0xAA)
1205                 return;
1206
1207         has_type_aa = true;
1208         type_aa = (struct hotkey_function_type_aa *) header;
1209
1210         pr_info("Function bitmap for Communication Button: 0x%x\n",
1211                 type_aa->commun_func_bitmap);
1212         commun_func_bitmap = type_aa->commun_func_bitmap;
1213
1214         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1215                 interface->capability |= ACER_CAP_WIRELESS;
1216         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1217                 interface->capability |= ACER_CAP_THREEG;
1218         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1219                 interface->capability |= ACER_CAP_BLUETOOTH;
1220
1221         commun_fn_key_number = type_aa->commun_fn_key_number;
1222 }
1223
1224 static acpi_status __init WMID_set_capabilities(void)
1225 {
1226         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1227         union acpi_object *obj;
1228         acpi_status status;
1229         u32 devices;
1230
1231         status = wmi_query_block(WMID_GUID2, 1, &out);
1232         if (ACPI_FAILURE(status))
1233                 return status;
1234
1235         obj = (union acpi_object *) out.pointer;
1236         if (obj) {
1237                 if (obj->type == ACPI_TYPE_BUFFER &&
1238                         (obj->buffer.length == sizeof(u32) ||
1239                         obj->buffer.length == sizeof(u64))) {
1240                         devices = *((u32 *) obj->buffer.pointer);
1241                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1242                         devices = (u32) obj->integer.value;
1243                 } else {
1244                         kfree(out.pointer);
1245                         return AE_ERROR;
1246                 }
1247         } else {
1248                 kfree(out.pointer);
1249                 return AE_ERROR;
1250         }
1251
1252         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1253         if (devices & 0x07)
1254                 interface->capability |= ACER_CAP_WIRELESS;
1255         if (devices & 0x40)
1256                 interface->capability |= ACER_CAP_THREEG;
1257         if (devices & 0x10)
1258                 interface->capability |= ACER_CAP_BLUETOOTH;
1259
1260         if (!(devices & 0x20))
1261                 max_brightness = 0x9;
1262
1263         kfree(out.pointer);
1264         return status;
1265 }
1266
1267 static struct wmi_interface wmid_interface = {
1268         .type = ACER_WMID,
1269 };
1270
1271 static struct wmi_interface wmid_v2_interface = {
1272         .type = ACER_WMID_v2,
1273 };
1274
1275 /*
1276  * Generic Device (interface-independent)
1277  */
1278
1279 static acpi_status get_u32(u32 *value, u32 cap)
1280 {
1281         acpi_status status = AE_ERROR;
1282
1283         switch (interface->type) {
1284         case ACER_AMW0:
1285                 status = AMW0_get_u32(value, cap);
1286                 break;
1287         case ACER_AMW0_V2:
1288                 if (cap == ACER_CAP_MAILLED) {
1289                         status = AMW0_get_u32(value, cap);
1290                         break;
1291                 }
1292         case ACER_WMID:
1293                 status = WMID_get_u32(value, cap);
1294                 break;
1295         case ACER_WMID_v2:
1296                 if (cap & (ACER_CAP_WIRELESS |
1297                            ACER_CAP_BLUETOOTH |
1298                            ACER_CAP_THREEG))
1299                         status = wmid_v2_get_u32(value, cap);
1300                 else if (wmi_has_guid(WMID_GUID2))
1301                         status = WMID_get_u32(value, cap);
1302                 break;
1303         }
1304
1305         return status;
1306 }
1307
1308 static acpi_status set_u32(u32 value, u32 cap)
1309 {
1310         acpi_status status;
1311
1312         if (interface->capability & cap) {
1313                 switch (interface->type) {
1314                 case ACER_AMW0:
1315                         return AMW0_set_u32(value, cap);
1316                 case ACER_AMW0_V2:
1317                         if (cap == ACER_CAP_MAILLED)
1318                                 return AMW0_set_u32(value, cap);
1319
1320                         /*
1321                          * On some models, some WMID methods don't toggle
1322                          * properly. For those cases, we want to run the AMW0
1323                          * method afterwards to be certain we've really toggled
1324                          * the device state.
1325                          */
1326                         if (cap == ACER_CAP_WIRELESS ||
1327                                 cap == ACER_CAP_BLUETOOTH) {
1328                                 status = WMID_set_u32(value, cap);
1329                                 if (ACPI_FAILURE(status))
1330                                         return status;
1331
1332                                 return AMW0_set_u32(value, cap);
1333                         }
1334                 case ACER_WMID:
1335                         return WMID_set_u32(value, cap);
1336                 case ACER_WMID_v2:
1337                         if (cap & (ACER_CAP_WIRELESS |
1338                                    ACER_CAP_BLUETOOTH |
1339                                    ACER_CAP_THREEG))
1340                                 return wmid_v2_set_u32(value, cap);
1341                         else if (wmi_has_guid(WMID_GUID2))
1342                                 return WMID_set_u32(value, cap);
1343                 default:
1344                         return AE_BAD_PARAMETER;
1345                 }
1346         }
1347         return AE_BAD_PARAMETER;
1348 }
1349
1350 static void __init acer_commandline_init(void)
1351 {
1352         /*
1353          * These will all fail silently if the value given is invalid, or the
1354          * capability isn't available on the given interface
1355          */
1356         if (mailled >= 0)
1357                 set_u32(mailled, ACER_CAP_MAILLED);
1358         if (!has_type_aa && threeg >= 0)
1359                 set_u32(threeg, ACER_CAP_THREEG);
1360         if (brightness >= 0)
1361                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1362 }
1363
1364 /*
1365  * LED device (Mail LED only, no other LEDs known yet)
1366  */
1367 static void mail_led_set(struct led_classdev *led_cdev,
1368 enum led_brightness value)
1369 {
1370         set_u32(value, ACER_CAP_MAILLED);
1371 }
1372
1373 static struct led_classdev mail_led = {
1374         .name = "acer-wmi::mail",
1375         .brightness_set = mail_led_set,
1376 };
1377
1378 static int acer_led_init(struct device *dev)
1379 {
1380         return led_classdev_register(dev, &mail_led);
1381 }
1382
1383 static void acer_led_exit(void)
1384 {
1385         set_u32(LED_OFF, ACER_CAP_MAILLED);
1386         led_classdev_unregister(&mail_led);
1387 }
1388
1389 /*
1390  * Backlight device
1391  */
1392 static struct backlight_device *acer_backlight_device;
1393
1394 static int read_brightness(struct backlight_device *bd)
1395 {
1396         u32 value;
1397         get_u32(&value, ACER_CAP_BRIGHTNESS);
1398         return value;
1399 }
1400
1401 static int update_bl_status(struct backlight_device *bd)
1402 {
1403         int intensity = bd->props.brightness;
1404
1405         if (bd->props.power != FB_BLANK_UNBLANK)
1406                 intensity = 0;
1407         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1408                 intensity = 0;
1409
1410         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1411
1412         return 0;
1413 }
1414
1415 static const struct backlight_ops acer_bl_ops = {
1416         .get_brightness = read_brightness,
1417         .update_status = update_bl_status,
1418 };
1419
1420 static int acer_backlight_init(struct device *dev)
1421 {
1422         struct backlight_properties props;
1423         struct backlight_device *bd;
1424
1425         memset(&props, 0, sizeof(struct backlight_properties));
1426         props.type = BACKLIGHT_PLATFORM;
1427         props.max_brightness = max_brightness;
1428         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1429                                        &props);
1430         if (IS_ERR(bd)) {
1431                 pr_err("Could not register Acer backlight device\n");
1432                 acer_backlight_device = NULL;
1433                 return PTR_ERR(bd);
1434         }
1435
1436         acer_backlight_device = bd;
1437
1438         bd->props.power = FB_BLANK_UNBLANK;
1439         bd->props.brightness = read_brightness(bd);
1440         backlight_update_status(bd);
1441         return 0;
1442 }
1443
1444 static void acer_backlight_exit(void)
1445 {
1446         backlight_device_unregister(acer_backlight_device);
1447 }
1448
1449 /*
1450  * Accelerometer device
1451  */
1452 static acpi_handle gsensor_handle;
1453
1454 static int acer_gsensor_init(void)
1455 {
1456         acpi_status status;
1457         struct acpi_buffer output;
1458         union acpi_object out_obj;
1459
1460         output.length = sizeof(out_obj);
1461         output.pointer = &out_obj;
1462         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1463         if (ACPI_FAILURE(status))
1464                 return -1;
1465
1466         return 0;
1467 }
1468
1469 static int acer_gsensor_open(struct input_dev *input)
1470 {
1471         return acer_gsensor_init();
1472 }
1473
1474 static int acer_gsensor_event(void)
1475 {
1476         acpi_status status;
1477         struct acpi_buffer output;
1478         union acpi_object out_obj[5];
1479
1480         if (!has_cap(ACER_CAP_ACCEL))
1481                 return -1;
1482
1483         output.length = sizeof(out_obj);
1484         output.pointer = out_obj;
1485
1486         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1487         if (ACPI_FAILURE(status))
1488                 return -1;
1489
1490         if (out_obj->package.count != 4)
1491                 return -1;
1492
1493         input_report_abs(acer_wmi_accel_dev, ABS_X,
1494                 (s16)out_obj->package.elements[0].integer.value);
1495         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1496                 (s16)out_obj->package.elements[1].integer.value);
1497         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1498                 (s16)out_obj->package.elements[2].integer.value);
1499         input_sync(acer_wmi_accel_dev);
1500         return 0;
1501 }
1502
1503 /*
1504  * Rfkill devices
1505  */
1506 static void acer_rfkill_update(struct work_struct *ignored);
1507 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1508 static void acer_rfkill_update(struct work_struct *ignored)
1509 {
1510         u32 state;
1511         acpi_status status;
1512
1513         if (has_cap(ACER_CAP_WIRELESS)) {
1514                 status = get_u32(&state, ACER_CAP_WIRELESS);
1515                 if (ACPI_SUCCESS(status)) {
1516                         if (quirks->wireless == 3)
1517                                 rfkill_set_hw_state(wireless_rfkill, !state);
1518                         else
1519                                 rfkill_set_sw_state(wireless_rfkill, !state);
1520                 }
1521         }
1522
1523         if (has_cap(ACER_CAP_BLUETOOTH)) {
1524                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1525                 if (ACPI_SUCCESS(status))
1526                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1527         }
1528
1529         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1530                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1531                 if (ACPI_SUCCESS(status))
1532                         rfkill_set_sw_state(threeg_rfkill, !state);
1533         }
1534
1535         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1536 }
1537
1538 static int acer_rfkill_set(void *data, bool blocked)
1539 {
1540         acpi_status status;
1541         u32 cap = (unsigned long)data;
1542
1543         if (rfkill_inited) {
1544                 status = set_u32(!blocked, cap);
1545                 if (ACPI_FAILURE(status))
1546                         return -ENODEV;
1547         }
1548
1549         return 0;
1550 }
1551
1552 static const struct rfkill_ops acer_rfkill_ops = {
1553         .set_block = acer_rfkill_set,
1554 };
1555
1556 static struct rfkill *acer_rfkill_register(struct device *dev,
1557                                            enum rfkill_type type,
1558                                            char *name, u32 cap)
1559 {
1560         int err;
1561         struct rfkill *rfkill_dev;
1562         u32 state;
1563         acpi_status status;
1564
1565         rfkill_dev = rfkill_alloc(name, dev, type,
1566                                   &acer_rfkill_ops,
1567                                   (void *)(unsigned long)cap);
1568         if (!rfkill_dev)
1569                 return ERR_PTR(-ENOMEM);
1570
1571         status = get_u32(&state, cap);
1572
1573         err = rfkill_register(rfkill_dev);
1574         if (err) {
1575                 rfkill_destroy(rfkill_dev);
1576                 return ERR_PTR(err);
1577         }
1578
1579         if (ACPI_SUCCESS(status))
1580                 rfkill_set_sw_state(rfkill_dev, !state);
1581
1582         return rfkill_dev;
1583 }
1584
1585 static int acer_rfkill_init(struct device *dev)
1586 {
1587         int err;
1588
1589         if (has_cap(ACER_CAP_WIRELESS)) {
1590                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1591                         "acer-wireless", ACER_CAP_WIRELESS);
1592                 if (IS_ERR(wireless_rfkill)) {
1593                         err = PTR_ERR(wireless_rfkill);
1594                         goto error_wireless;
1595                 }
1596         }
1597
1598         if (has_cap(ACER_CAP_BLUETOOTH)) {
1599                 bluetooth_rfkill = acer_rfkill_register(dev,
1600                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1601                         ACER_CAP_BLUETOOTH);
1602                 if (IS_ERR(bluetooth_rfkill)) {
1603                         err = PTR_ERR(bluetooth_rfkill);
1604                         goto error_bluetooth;
1605                 }
1606         }
1607
1608         if (has_cap(ACER_CAP_THREEG)) {
1609                 threeg_rfkill = acer_rfkill_register(dev,
1610                         RFKILL_TYPE_WWAN, "acer-threeg",
1611                         ACER_CAP_THREEG);
1612                 if (IS_ERR(threeg_rfkill)) {
1613                         err = PTR_ERR(threeg_rfkill);
1614                         goto error_threeg;
1615                 }
1616         }
1617
1618         rfkill_inited = true;
1619
1620         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1621             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1622                 schedule_delayed_work(&acer_rfkill_work,
1623                         round_jiffies_relative(HZ));
1624
1625         return 0;
1626
1627 error_threeg:
1628         if (has_cap(ACER_CAP_BLUETOOTH)) {
1629                 rfkill_unregister(bluetooth_rfkill);
1630                 rfkill_destroy(bluetooth_rfkill);
1631         }
1632 error_bluetooth:
1633         if (has_cap(ACER_CAP_WIRELESS)) {
1634                 rfkill_unregister(wireless_rfkill);
1635                 rfkill_destroy(wireless_rfkill);
1636         }
1637 error_wireless:
1638         return err;
1639 }
1640
1641 static void acer_rfkill_exit(void)
1642 {
1643         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1644             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1645                 cancel_delayed_work_sync(&acer_rfkill_work);
1646
1647         if (has_cap(ACER_CAP_WIRELESS)) {
1648                 rfkill_unregister(wireless_rfkill);
1649                 rfkill_destroy(wireless_rfkill);
1650         }
1651
1652         if (has_cap(ACER_CAP_BLUETOOTH)) {
1653                 rfkill_unregister(bluetooth_rfkill);
1654                 rfkill_destroy(bluetooth_rfkill);
1655         }
1656
1657         if (has_cap(ACER_CAP_THREEG)) {
1658                 rfkill_unregister(threeg_rfkill);
1659                 rfkill_destroy(threeg_rfkill);
1660         }
1661         return;
1662 }
1663
1664 /*
1665  * sysfs interface
1666  */
1667 static ssize_t show_bool_threeg(struct device *dev,
1668         struct device_attribute *attr, char *buf)
1669 {
1670         u32 result; \
1671         acpi_status status;
1672
1673         pr_info("This threeg sysfs will be removed in 2014 - used by: %s\n",
1674                 current->comm);
1675         status = get_u32(&result, ACER_CAP_THREEG);
1676         if (ACPI_SUCCESS(status))
1677                 return sprintf(buf, "%u\n", result);
1678         return sprintf(buf, "Read error\n");
1679 }
1680
1681 static ssize_t set_bool_threeg(struct device *dev,
1682         struct device_attribute *attr, const char *buf, size_t count)
1683 {
1684         u32 tmp = simple_strtoul(buf, NULL, 10);
1685         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1686         pr_info("This threeg sysfs will be removed in 2014 - used by: %s\n",
1687                 current->comm);
1688         if (ACPI_FAILURE(status))
1689                 return -EINVAL;
1690         return count;
1691 }
1692 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1693         set_bool_threeg);
1694
1695 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1696         char *buf)
1697 {
1698         pr_info("This interface sysfs will be removed in 2014 - used by: %s\n",
1699                 current->comm);
1700         switch (interface->type) {
1701         case ACER_AMW0:
1702                 return sprintf(buf, "AMW0\n");
1703         case ACER_AMW0_V2:
1704                 return sprintf(buf, "AMW0 v2\n");
1705         case ACER_WMID:
1706                 return sprintf(buf, "WMID\n");
1707         case ACER_WMID_v2:
1708                 return sprintf(buf, "WMID v2\n");
1709         default:
1710                 return sprintf(buf, "Error!\n");
1711         }
1712 }
1713
1714 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1715
1716 static void acer_wmi_notify(u32 value, void *context)
1717 {
1718         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1719         union acpi_object *obj;
1720         struct event_return_value return_value;
1721         acpi_status status;
1722         u16 device_state;
1723         const struct key_entry *key;
1724         u32 scancode;
1725
1726         status = wmi_get_event_data(value, &response);
1727         if (status != AE_OK) {
1728                 pr_warn("bad event status 0x%x\n", status);
1729                 return;
1730         }
1731
1732         obj = (union acpi_object *)response.pointer;
1733
1734         if (!obj)
1735                 return;
1736         if (obj->type != ACPI_TYPE_BUFFER) {
1737                 pr_warn("Unknown response received %d\n", obj->type);
1738                 kfree(obj);
1739                 return;
1740         }
1741         if (obj->buffer.length != 8) {
1742                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1743                 kfree(obj);
1744                 return;
1745         }
1746
1747         return_value = *((struct event_return_value *)obj->buffer.pointer);
1748         kfree(obj);
1749
1750         switch (return_value.function) {
1751         case WMID_HOTKEY_EVENT:
1752                 device_state = return_value.device_state;
1753                 pr_debug("device state: 0x%x\n", device_state);
1754
1755                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1756                                                         return_value.key_num);
1757                 if (!key) {
1758                         pr_warn("Unknown key number - 0x%x\n",
1759                                 return_value.key_num);
1760                 } else {
1761                         scancode = return_value.key_num;
1762                         switch (key->keycode) {
1763                         case KEY_WLAN:
1764                         case KEY_BLUETOOTH:
1765                                 if (has_cap(ACER_CAP_WIRELESS))
1766                                         rfkill_set_sw_state(wireless_rfkill,
1767                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1768                                 if (has_cap(ACER_CAP_THREEG))
1769                                         rfkill_set_sw_state(threeg_rfkill,
1770                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1771                                 if (has_cap(ACER_CAP_BLUETOOTH))
1772                                         rfkill_set_sw_state(bluetooth_rfkill,
1773                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1774                                 break;
1775                         case KEY_TOUCHPAD_TOGGLE:
1776                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1777                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1778                         }
1779                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1780                 }
1781                 break;
1782         case WMID_ACCEL_EVENT:
1783                 acer_gsensor_event();
1784                 break;
1785         default:
1786                 pr_warn("Unknown function number - %d - %d\n",
1787                         return_value.function, return_value.key_num);
1788                 break;
1789         }
1790 }
1791
1792 static acpi_status __init
1793 wmid3_set_lm_mode(struct lm_input_params *params,
1794                   struct lm_return_value *return_value)
1795 {
1796         acpi_status status;
1797         union acpi_object *obj;
1798
1799         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1800         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1801
1802         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1803         if (ACPI_FAILURE(status))
1804                 return status;
1805
1806         obj = output.pointer;
1807
1808         if (!obj)
1809                 return AE_ERROR;
1810         else if (obj->type != ACPI_TYPE_BUFFER) {
1811                 kfree(obj);
1812                 return AE_ERROR;
1813         }
1814         if (obj->buffer.length != 4) {
1815                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1816                 kfree(obj);
1817                 return AE_ERROR;
1818         }
1819
1820         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1821         kfree(obj);
1822
1823         return status;
1824 }
1825
1826 static int __init acer_wmi_enable_ec_raw(void)
1827 {
1828         struct lm_return_value return_value;
1829         acpi_status status;
1830         struct lm_input_params params = {
1831                 .function_num = 0x1,
1832                 .commun_devices = 0xFFFF,
1833                 .devices = 0xFFFF,
1834                 .lm_status = 0x00,            /* Launch Manager Deactive */
1835         };
1836
1837         status = wmid3_set_lm_mode(&params, &return_value);
1838
1839         if (return_value.error_code || return_value.ec_return_value)
1840                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1841                         return_value.error_code,
1842                         return_value.ec_return_value);
1843         else
1844                 pr_info("Enabled EC raw mode\n");
1845
1846         return status;
1847 }
1848
1849 static int __init acer_wmi_enable_lm(void)
1850 {
1851         struct lm_return_value return_value;
1852         acpi_status status;
1853         struct lm_input_params params = {
1854                 .function_num = 0x1,
1855                 .commun_devices = 0xFFFF,
1856                 .devices = 0xFFFF,
1857                 .lm_status = 0x01,            /* Launch Manager Active */
1858         };
1859
1860         status = wmid3_set_lm_mode(&params, &return_value);
1861
1862         if (return_value.error_code || return_value.ec_return_value)
1863                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1864                         return_value.error_code,
1865                         return_value.ec_return_value);
1866
1867         return status;
1868 }
1869
1870 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1871                                                 void *ctx, void **retval)
1872 {
1873         *(acpi_handle *)retval = ah;
1874         return AE_OK;
1875 }
1876
1877 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1878                                         acpi_handle *ah)
1879 {
1880         acpi_status status;
1881         acpi_handle handle;
1882
1883         BUG_ON(!name || !ah);
1884
1885         handle = NULL;
1886         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1887                                         (void *)name, &handle);
1888
1889         if (ACPI_SUCCESS(status)) {
1890                 *ah = handle;
1891                 return 0;
1892         } else {
1893                 return -ENODEV;
1894         }
1895 }
1896
1897 static int __init acer_wmi_accel_setup(void)
1898 {
1899         int err;
1900
1901         err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1902         if (err)
1903                 return err;
1904
1905         interface->capability |= ACER_CAP_ACCEL;
1906
1907         acer_wmi_accel_dev = input_allocate_device();
1908         if (!acer_wmi_accel_dev)
1909                 return -ENOMEM;
1910
1911         acer_wmi_accel_dev->open = acer_gsensor_open;
1912
1913         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1914         acer_wmi_accel_dev->phys = "wmi/input1";
1915         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1916         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1917         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1918         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1919         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1920
1921         err = input_register_device(acer_wmi_accel_dev);
1922         if (err)
1923                 goto err_free_dev;
1924
1925         return 0;
1926
1927 err_free_dev:
1928         input_free_device(acer_wmi_accel_dev);
1929         return err;
1930 }
1931
1932 static void acer_wmi_accel_destroy(void)
1933 {
1934         input_unregister_device(acer_wmi_accel_dev);
1935 }
1936
1937 static int __init acer_wmi_input_setup(void)
1938 {
1939         acpi_status status;
1940         int err;
1941
1942         acer_wmi_input_dev = input_allocate_device();
1943         if (!acer_wmi_input_dev)
1944                 return -ENOMEM;
1945
1946         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1947         acer_wmi_input_dev->phys = "wmi/input0";
1948         acer_wmi_input_dev->id.bustype = BUS_HOST;
1949
1950         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1951         if (err)
1952                 goto err_free_dev;
1953
1954         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1955                                                 acer_wmi_notify, NULL);
1956         if (ACPI_FAILURE(status)) {
1957                 err = -EIO;
1958                 goto err_free_keymap;
1959         }
1960
1961         err = input_register_device(acer_wmi_input_dev);
1962         if (err)
1963                 goto err_uninstall_notifier;
1964
1965         return 0;
1966
1967 err_uninstall_notifier:
1968         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1969 err_free_keymap:
1970         sparse_keymap_free(acer_wmi_input_dev);
1971 err_free_dev:
1972         input_free_device(acer_wmi_input_dev);
1973         return err;
1974 }
1975
1976 static void acer_wmi_input_destroy(void)
1977 {
1978         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1979         sparse_keymap_free(acer_wmi_input_dev);
1980         input_unregister_device(acer_wmi_input_dev);
1981 }
1982
1983 /*
1984  * debugfs functions
1985  */
1986 static u32 get_wmid_devices(void)
1987 {
1988         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1989         union acpi_object *obj;
1990         acpi_status status;
1991         u32 devices = 0;
1992
1993         status = wmi_query_block(WMID_GUID2, 1, &out);
1994         if (ACPI_FAILURE(status))
1995                 return 0;
1996
1997         obj = (union acpi_object *) out.pointer;
1998         if (obj) {
1999                 if (obj->type == ACPI_TYPE_BUFFER &&
2000                         (obj->buffer.length == sizeof(u32) ||
2001                         obj->buffer.length == sizeof(u64))) {
2002                         devices = *((u32 *) obj->buffer.pointer);
2003                 } else if (obj->type == ACPI_TYPE_INTEGER) {
2004                         devices = (u32) obj->integer.value;
2005                 }
2006         }
2007
2008         kfree(out.pointer);
2009         return devices;
2010 }
2011
2012 /*
2013  * Platform device
2014  */
2015 static int acer_platform_probe(struct platform_device *device)
2016 {
2017         int err;
2018
2019         if (has_cap(ACER_CAP_MAILLED)) {
2020                 err = acer_led_init(&device->dev);
2021                 if (err)
2022                         goto error_mailled;
2023         }
2024
2025         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2026                 err = acer_backlight_init(&device->dev);
2027                 if (err)
2028                         goto error_brightness;
2029         }
2030
2031         err = acer_rfkill_init(&device->dev);
2032         if (err)
2033                 goto error_rfkill;
2034
2035         return err;
2036
2037 error_rfkill:
2038         if (has_cap(ACER_CAP_BRIGHTNESS))
2039                 acer_backlight_exit();
2040 error_brightness:
2041         if (has_cap(ACER_CAP_MAILLED))
2042                 acer_led_exit();
2043 error_mailled:
2044         return err;
2045 }
2046
2047 static int acer_platform_remove(struct platform_device *device)
2048 {
2049         if (has_cap(ACER_CAP_MAILLED))
2050                 acer_led_exit();
2051         if (has_cap(ACER_CAP_BRIGHTNESS))
2052                 acer_backlight_exit();
2053
2054         acer_rfkill_exit();
2055         return 0;
2056 }
2057
2058 #ifdef CONFIG_PM_SLEEP
2059 static int acer_suspend(struct device *dev)
2060 {
2061         u32 value;
2062         struct acer_data *data = &interface->data;
2063
2064         if (!data)
2065                 return -ENOMEM;
2066
2067         if (has_cap(ACER_CAP_MAILLED)) {
2068                 get_u32(&value, ACER_CAP_MAILLED);
2069                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2070                 data->mailled = value;
2071         }
2072
2073         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2074                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2075                 data->brightness = value;
2076         }
2077
2078         return 0;
2079 }
2080
2081 static int acer_resume(struct device *dev)
2082 {
2083         struct acer_data *data = &interface->data;
2084
2085         if (!data)
2086                 return -ENOMEM;
2087
2088         if (has_cap(ACER_CAP_MAILLED))
2089                 set_u32(data->mailled, ACER_CAP_MAILLED);
2090
2091         if (has_cap(ACER_CAP_BRIGHTNESS))
2092                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2093
2094         if (has_cap(ACER_CAP_ACCEL))
2095                 acer_gsensor_init();
2096
2097         return 0;
2098 }
2099 #else
2100 #define acer_suspend    NULL
2101 #define acer_resume     NULL
2102 #endif
2103
2104 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2105
2106 static void acer_platform_shutdown(struct platform_device *device)
2107 {
2108         struct acer_data *data = &interface->data;
2109
2110         if (!data)
2111                 return;
2112
2113         if (has_cap(ACER_CAP_MAILLED))
2114                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2115 }
2116
2117 static struct platform_driver acer_platform_driver = {
2118         .driver = {
2119                 .name = "acer-wmi",
2120                 .pm = &acer_pm,
2121         },
2122         .probe = acer_platform_probe,
2123         .remove = acer_platform_remove,
2124         .shutdown = acer_platform_shutdown,
2125 };
2126
2127 static struct platform_device *acer_platform_device;
2128
2129 static int remove_sysfs(struct platform_device *device)
2130 {
2131         if (has_cap(ACER_CAP_THREEG))
2132                 device_remove_file(&device->dev, &dev_attr_threeg);
2133
2134         device_remove_file(&device->dev, &dev_attr_interface);
2135
2136         return 0;
2137 }
2138
2139 static int __init create_sysfs(void)
2140 {
2141         int retval = -ENOMEM;
2142
2143         if (has_cap(ACER_CAP_THREEG)) {
2144                 retval = device_create_file(&acer_platform_device->dev,
2145                         &dev_attr_threeg);
2146                 if (retval)
2147                         goto error_sysfs;
2148         }
2149
2150         retval = device_create_file(&acer_platform_device->dev,
2151                 &dev_attr_interface);
2152         if (retval)
2153                 goto error_sysfs;
2154
2155         return 0;
2156
2157 error_sysfs:
2158                 remove_sysfs(acer_platform_device);
2159         return retval;
2160 }
2161
2162 static void remove_debugfs(void)
2163 {
2164         debugfs_remove(interface->debug.devices);
2165         debugfs_remove(interface->debug.root);
2166 }
2167
2168 static int __init create_debugfs(void)
2169 {
2170         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2171         if (!interface->debug.root) {
2172                 pr_err("Failed to create debugfs directory");
2173                 return -ENOMEM;
2174         }
2175
2176         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2177                                         interface->debug.root,
2178                                         &interface->debug.wmid_devices);
2179         if (!interface->debug.devices)
2180                 goto error_debugfs;
2181
2182         return 0;
2183
2184 error_debugfs:
2185         remove_debugfs();
2186         return -ENOMEM;
2187 }
2188
2189 static int __init acer_wmi_init(void)
2190 {
2191         int err;
2192
2193         pr_info("Acer Laptop ACPI-WMI Extras\n");
2194
2195         if (dmi_check_system(acer_blacklist)) {
2196                 pr_info("Blacklisted hardware detected - not loading\n");
2197                 return -ENODEV;
2198         }
2199
2200         find_quirks();
2201
2202         /*
2203          * Detect which ACPI-WMI interface we're using.
2204          */
2205         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2206                 interface = &AMW0_V2_interface;
2207
2208         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2209                 interface = &wmid_interface;
2210
2211         if (wmi_has_guid(WMID_GUID3))
2212                 interface = &wmid_v2_interface;
2213
2214         if (interface)
2215                 dmi_walk(type_aa_dmi_decode, NULL);
2216
2217         if (wmi_has_guid(WMID_GUID2) && interface) {
2218                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2219                         pr_err("Unable to detect available WMID devices\n");
2220                         return -ENODEV;
2221                 }
2222                 /* WMID always provides brightness methods */
2223                 interface->capability |= ACER_CAP_BRIGHTNESS;
2224         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2225                 pr_err("No WMID device detection method found\n");
2226                 return -ENODEV;
2227         }
2228
2229         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2230                 interface = &AMW0_interface;
2231
2232                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2233                         pr_err("Unable to detect available AMW0 devices\n");
2234                         return -ENODEV;
2235                 }
2236         }
2237
2238         if (wmi_has_guid(AMW0_GUID1))
2239                 AMW0_find_mailled();
2240
2241         if (!interface) {
2242                 pr_err("No or unsupported WMI interface, unable to load\n");
2243                 return -ENODEV;
2244         }
2245
2246         set_quirks();
2247
2248         if (dmi_check_system(video_vendor_dmi_table))
2249                 acpi_video_dmi_promote_vendor();
2250         if (acpi_video_backlight_support()) {
2251                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2252                 pr_info("Brightness must be controlled by acpi video driver\n");
2253         } else {
2254                 pr_info("Disabling ACPI video driver\n");
2255                 acpi_video_unregister_backlight();
2256         }
2257
2258         if (wmi_has_guid(WMID_GUID3)) {
2259                 if (ec_raw_mode) {
2260                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2261                                 pr_err("Cannot enable EC raw mode\n");
2262                                 return -ENODEV;
2263                         }
2264                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2265                         pr_err("Cannot enable Launch Manager mode\n");
2266                         return -ENODEV;
2267                 }
2268         } else if (ec_raw_mode) {
2269                 pr_info("No WMID EC raw mode enable method\n");
2270         }
2271
2272         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2273                 err = acer_wmi_input_setup();
2274                 if (err)
2275                         return err;
2276         }
2277
2278         acer_wmi_accel_setup();
2279
2280         err = platform_driver_register(&acer_platform_driver);
2281         if (err) {
2282                 pr_err("Unable to register platform driver\n");
2283                 goto error_platform_register;
2284         }
2285
2286         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2287         if (!acer_platform_device) {
2288                 err = -ENOMEM;
2289                 goto error_device_alloc;
2290         }
2291
2292         err = platform_device_add(acer_platform_device);
2293         if (err)
2294                 goto error_device_add;
2295
2296         err = create_sysfs();
2297         if (err)
2298                 goto error_create_sys;
2299
2300         if (wmi_has_guid(WMID_GUID2)) {
2301                 interface->debug.wmid_devices = get_wmid_devices();
2302                 err = create_debugfs();
2303                 if (err)
2304                         goto error_create_debugfs;
2305         }
2306
2307         /* Override any initial settings with values from the commandline */
2308         acer_commandline_init();
2309
2310         return 0;
2311
2312 error_create_debugfs:
2313         remove_sysfs(acer_platform_device);
2314 error_create_sys:
2315         platform_device_del(acer_platform_device);
2316 error_device_add:
2317         platform_device_put(acer_platform_device);
2318 error_device_alloc:
2319         platform_driver_unregister(&acer_platform_driver);
2320 error_platform_register:
2321         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2322                 acer_wmi_input_destroy();
2323         if (has_cap(ACER_CAP_ACCEL))
2324                 acer_wmi_accel_destroy();
2325
2326         return err;
2327 }
2328
2329 static void __exit acer_wmi_exit(void)
2330 {
2331         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2332                 acer_wmi_input_destroy();
2333
2334         if (has_cap(ACER_CAP_ACCEL))
2335                 acer_wmi_accel_destroy();
2336
2337         remove_sysfs(acer_platform_device);
2338         remove_debugfs();
2339         platform_device_unregister(acer_platform_device);
2340         platform_driver_unregister(&acer_platform_driver);
2341
2342         pr_info("Acer Laptop WMI Extras unloaded\n");
2343         return;
2344 }
2345
2346 module_init(acer_wmi_init);
2347 module_exit(acer_wmi_exit);