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
 585 /* Find which quirks are needed for a particular vendor/ model pair */
 586 static void __init find_quirks(void)
 587 {
 588         if (!force_series) {
 589                 dmi_check_system(acer_quirks);
 590         } else if (force_series == 2490) {
 591                 quirks = &quirk_acer_travelmate_2490;
 592         }
 593
 594         if (quirks == NULL)
 595                 quirks = &quirk_unknown;
 596
 597         set_quirks();
 598 }
 599
 600 /*
 601  * General interface convenience methods
 602  */
 603
 604 static bool has_cap(u32 cap)
 605 {
 606         if ((interface->capability & cap) != 0)
 607                 return 1;
 608
 609         return 0;
 610 }
 611
 612 /*
 613  * AMW0 (V1) interface
 614  */
 615 struct wmab_args {
 616         u32 eax;
 617         u32 ebx;
 618         u32 ecx;
 619         u32 edx;
 620 };
 621
 622 struct wmab_ret {
 623         u32 eax;
 624         u32 ebx;
 625         u32 ecx;
 626         u32 edx;
 627         u32 eex;
 628 };
 629
 630 static acpi_status wmab_execute(struct wmab_args *regbuf,
 631 struct acpi_buffer *result)
 632 {
 633         struct acpi_buffer input;
 634         acpi_status status;
 635         input.length = sizeof(struct wmab_args);
 636         input.pointer = (u8 *)regbuf;
 637
 638         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
 639
 640         return status;
 641 }
 642
 643 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 644 {
 645         int err;
 646         u8 result;
 647
 648         switch (cap) {
 649         case ACER_CAP_MAILLED:
 650                 switch (quirks->mailled) {
 651                 default:
 652                         err = ec_read(0xA, &result);
 653                         if (err)
 654                                 return AE_ERROR;
 655                         *value = (result >> 7) & 0x1;
 656                         return AE_OK;
 657                 }
 658                 break;
 659         case ACER_CAP_WIRELESS:
 660                 switch (quirks->wireless) {
 661                 case 1:
 662                         err = ec_read(0x7B, &result);
 663                         if (err)
 664                                 return AE_ERROR;
 665                         *value = result & 0x1;
 666                         return AE_OK;
 667                 case 2:
 668                         err = ec_read(0x71, &result);
 669                         if (err)
 670                                 return AE_ERROR;
 671                         *value = result & 0x1;
 672                         return AE_OK;
 673                 case 3:
 674                         err = ec_read(0x78, &result);
 675                         if (err)
 676                                 return AE_ERROR;
 677                         *value = result & 0x1;
 678                         return AE_OK;
 679                 default:
 680                         err = ec_read(0xA, &result);
 681                         if (err)
 682                                 return AE_ERROR;
 683                         *value = (result >> 2) & 0x1;
 684                         return AE_OK;
 685                 }
 686                 break;
 687         case ACER_CAP_BLUETOOTH:
 688                 switch (quirks->bluetooth) {
 689                 default:
 690                         err = ec_read(0xA, &result);
 691                         if (err)
 692                                 return AE_ERROR;
 693                         *value = (result >> 4) & 0x1;
 694                         return AE_OK;
 695                 }
 696                 break;
 697         case ACER_CAP_BRIGHTNESS:
 698                 switch (quirks->brightness) {
 699                 default:
 700                         err = ec_read(0x83, &result);
 701                         if (err)
 702                                 return AE_ERROR;
 703                         *value = result;
 704                         return AE_OK;
 705                 }
 706                 break;
 707         default:
 708                 return AE_ERROR;
 709         }
 710         return AE_OK;
 711 }
 712
 713 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 714 {
 715         struct wmab_args args;
 716
 717         args.eax = ACER_AMW0_WRITE;
 718         args.ebx = value ? (1<<8) : 0;
 719         args.ecx = args.edx = 0;
 720
 721         switch (cap) {
 722         case ACER_CAP_MAILLED:
 723                 if (value > 1)
 724                         return AE_BAD_PARAMETER;
 725                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 726                 break;
 727         case ACER_CAP_WIRELESS:
 728                 if (value > 1)
 729                         return AE_BAD_PARAMETER;
 730                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 731                 break;
 732         case ACER_CAP_BLUETOOTH:
 733                 if (value > 1)
 734                         return AE_BAD_PARAMETER;
 735                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 736                 break;
 737         case ACER_CAP_BRIGHTNESS:
 738                 if (value > max_brightness)
 739                         return AE_BAD_PARAMETER;
 740                 switch (quirks->brightness) {
 741                 default:
 742                         return ec_write(0x83, value);
 743                         break;
 744                 }
 745         default:
 746                 return AE_ERROR;
 747         }
 748
 749         /* Actually do the set */
 750         return wmab_execute(&args, NULL);
 751 }
 752
 753 static acpi_status __init AMW0_find_mailled(void)
 754 {
 755         struct wmab_args args;
 756         struct wmab_ret ret;
 757         acpi_status status = AE_OK;
 758         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 759         union acpi_object *obj;
 760
 761         args.eax = 0x86;
 762         args.ebx = args.ecx = args.edx = 0;
 763
 764         status = wmab_execute(&args, &out);
 765         if (ACPI_FAILURE(status))
 766                 return status;
 767
 768         obj = (union acpi_object *) out.pointer;
 769         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 770         obj->buffer.length == sizeof(struct wmab_ret)) {
 771                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 772         } else {
 773                 kfree(out.pointer);
 774                 return AE_ERROR;
 775         }
 776
 777         if (ret.eex & 0x1)
 778                 interface->capability |= ACER_CAP_MAILLED;
 779
 780         kfree(out.pointer);
 781
 782         return AE_OK;
 783 }
 784
 785 static int AMW0_set_cap_acpi_check_device_found __initdata;
 786
 787 static acpi_status __init AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
 788         u32 level, void *context, void **retval)
 789 {
 790         AMW0_set_cap_acpi_check_device_found = 1;
 791         return AE_OK;
 792 }
 793
 794 static const struct acpi_device_id norfkill_ids[] __initconst = {
 795         { "VPC2004", 0},
 796         { "IBM0068", 0},
 797         { "LEN0068", 0},
 798         { "SNY5001", 0},        /* sony-laptop in charge */
 799         { "", 0},
 800 };
 801
 802 static int __init AMW0_set_cap_acpi_check_device(void)
 803 {
 804         const struct acpi_device_id *id;
 805
 806         for (id = norfkill_ids; id->id[0]; id++)
 807                 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
 808                                 NULL, NULL);
 809         return AMW0_set_cap_acpi_check_device_found;
 810 }
 811
 812 static acpi_status __init AMW0_set_capabilities(void)
 813 {
 814         struct wmab_args args;
 815         struct wmab_ret ret;
 816         acpi_status status;
 817         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 818         union acpi_object *obj;
 819
 820         /*
 821          * On laptops with this strange GUID (non Acer), normal probing doesn't
 822          * work.
 823          */
 824         if (wmi_has_guid(AMW0_GUID2)) {
 825                 if ((quirks != &quirk_unknown) ||
 826                     !AMW0_set_cap_acpi_check_device())
 827                         interface->capability |= ACER_CAP_WIRELESS;
 828                 return AE_OK;
 829         }
 830
 831         args.eax = ACER_AMW0_WRITE;
 832         args.ecx = args.edx = 0;
 833
 834         args.ebx = 0xa2 << 8;
 835         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 836
 837         status = wmab_execute(&args, &out);
 838         if (ACPI_FAILURE(status))
 839                 return status;
 840
 841         obj = out.pointer;
 842         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 843         obj->buffer.length == sizeof(struct wmab_ret)) {
 844                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 845         } else {
 846                 status = AE_ERROR;
 847                 goto out;
 848         }
 849
 850         if (ret.eax & 0x1)
 851                 interface->capability |= ACER_CAP_WIRELESS;
 852
 853         args.ebx = 2 << 8;
 854         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 855
 856         /*
 857          * It's ok to use existing buffer for next wmab_execute call.
 858          * But we need to kfree(out.pointer) if next wmab_execute fail.
 859          */
 860         status = wmab_execute(&args, &out);
 861         if (ACPI_FAILURE(status))
 862                 goto out;
 863
 864         obj = (union acpi_object *) out.pointer;
 865         if (obj && obj->type == ACPI_TYPE_BUFFER
 866         && obj->buffer.length == sizeof(struct wmab_ret)) {
 867                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 868         } else {
 869                 status = AE_ERROR;
 870                 goto out;
 871         }
 872
 873         if (ret.eax & 0x1)
 874                 interface->capability |= ACER_CAP_BLUETOOTH;
 875
 876         /*
 877          * This appears to be safe to enable, since all Wistron based laptops
 878          * appear to use the same EC register for brightness, even if they
 879          * differ for wireless, etc
 880          */
 881         if (quirks->brightness >= 0)
 882                 interface->capability |= ACER_CAP_BRIGHTNESS;
 883
 884         status = AE_OK;
 885 out:
 886         kfree(out.pointer);
 887         return status;
 888 }
 889
 890 static struct wmi_interface AMW0_interface = {
 891         .type = ACER_AMW0,
 892 };
 893
 894 static struct wmi_interface AMW0_V2_interface = {
 895         .type = ACER_AMW0_V2,
 896 };
 897
 898 /*
 899  * New interface (The WMID interface)
 900  */
 901 static acpi_status
 902 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 903 {
 904         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 905         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 906         union acpi_object *obj;
 907         u32 tmp = 0;
 908         acpi_status status;
 909
 910         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 911
 912         if (ACPI_FAILURE(status))
 913                 return status;
 914
 915         obj = (union acpi_object *) result.pointer;
 916         if (obj) {
 917                 if (obj->type == ACPI_TYPE_BUFFER &&
 918                         (obj->buffer.length == sizeof(u32) ||
 919                         obj->buffer.length == sizeof(u64))) {
 920                         tmp = *((u32 *) obj->buffer.pointer);
 921                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 922                         tmp = (u32) obj->integer.value;
 923                 }
 924         }
 925
 926         if (out)
 927                 *out = tmp;
 928
 929         kfree(result.pointer);
 930
 931         return status;
 932 }
 933
 934 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 935 {
 936         acpi_status status;
 937         u8 tmp;
 938         u32 result, method_id = 0;
 939
 940         switch (cap) {
 941         case ACER_CAP_WIRELESS:
 942                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 943                 break;
 944         case ACER_CAP_BLUETOOTH:
 945                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 946                 break;
 947         case ACER_CAP_BRIGHTNESS:
 948                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 949                 break;
 950         case ACER_CAP_THREEG:
 951                 method_id = ACER_WMID_GET_THREEG_METHODID;
 952                 break;
 953         case ACER_CAP_MAILLED:
 954                 if (quirks->mailled == 1) {
 955                         ec_read(0x9f, &tmp);
 956                         *value = tmp & 0x1;
 957                         return 0;
 958                 }
 959         default:
 960                 return AE_ERROR;
 961         }
 962         status = WMI_execute_u32(method_id, 0, &result);
 963
 964         if (ACPI_SUCCESS(status))
 965                 *value = (u8)result;
 966
 967         return status;
 968 }
 969
 970 static acpi_status WMID_set_u32(u32 value, u32 cap)
 971 {
 972         u32 method_id = 0;
 973         char param;
 974
 975         switch (cap) {
 976         case ACER_CAP_BRIGHTNESS:
 977                 if (value > max_brightness)
 978                         return AE_BAD_PARAMETER;
 979                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
 980                 break;
 981         case ACER_CAP_WIRELESS:
 982                 if (value > 1)
 983                         return AE_BAD_PARAMETER;
 984                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
 985                 break;
 986         case ACER_CAP_BLUETOOTH:
 987                 if (value > 1)
 988                         return AE_BAD_PARAMETER;
 989                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
 990                 break;
 991         case ACER_CAP_THREEG:
 992                 if (value > 1)
 993                         return AE_BAD_PARAMETER;
 994                 method_id = ACER_WMID_SET_THREEG_METHODID;
 995                 break;
 996         case ACER_CAP_MAILLED:
 997                 if (value > 1)
 998                         return AE_BAD_PARAMETER;
 999                 if (quirks->mailled == 1) {
1000                         param = value ? 0x92 : 0x93;
1001                         i8042_lock_chip();
1002                         i8042_command(&param, 0x1059);
1003                         i8042_unlock_chip();
1004                         return 0;
1005                 }
1006                 break;
1007         default:
1008                 return AE_ERROR;
1009         }
1010         return WMI_execute_u32(method_id, (u32)value, NULL);
1011 }
1012
1013 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1014 {
1015         struct wmid3_gds_return_value return_value;
1016         acpi_status status;
1017         union acpi_object *obj;
1018         struct wmid3_gds_get_input_param params = {
1019                 .function_num = 0x1,
1020                 .hotkey_number = commun_fn_key_number,
1021                 .devices = device,
1022         };
1023         struct acpi_buffer input = {
1024                 sizeof(struct wmid3_gds_get_input_param),
1025                 &params
1026         };
1027         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1028
1029         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1030         if (ACPI_FAILURE(status))
1031                 return status;
1032
1033         obj = output.pointer;
1034
1035         if (!obj)
1036                 return AE_ERROR;
1037         else if (obj->type != ACPI_TYPE_BUFFER) {
1038                 kfree(obj);
1039                 return AE_ERROR;
1040         }
1041         if (obj->buffer.length != 8) {
1042                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1043                 kfree(obj);
1044                 return AE_ERROR;
1045         }
1046
1047         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1048         kfree(obj);
1049
1050         if (return_value.error_code || return_value.ec_return_value)
1051                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1052                         device,
1053                         return_value.error_code,
1054                         return_value.ec_return_value);
1055         else
1056                 *value = !!(return_value.devices & device);
1057
1058         return status;
1059 }
1060
1061 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1062 {
1063         u16 device;
1064
1065         switch (cap) {
1066         case ACER_CAP_WIRELESS:
1067                 device = ACER_WMID3_GDS_WIRELESS;
1068                 break;
1069         case ACER_CAP_BLUETOOTH:
1070                 device = ACER_WMID3_GDS_BLUETOOTH;
1071                 break;
1072         case ACER_CAP_THREEG:
1073                 device = ACER_WMID3_GDS_THREEG;
1074                 break;
1075         default:
1076                 return AE_ERROR;
1077         }
1078         return wmid3_get_device_status(value, device);
1079 }
1080
1081 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1082 {
1083         struct wmid3_gds_return_value return_value;
1084         acpi_status status;
1085         union acpi_object *obj;
1086         u16 devices;
1087         struct wmid3_gds_get_input_param get_params = {
1088                 .function_num = 0x1,
1089                 .hotkey_number = commun_fn_key_number,
1090                 .devices = commun_func_bitmap,
1091         };
1092         struct acpi_buffer get_input = {
1093                 sizeof(struct wmid3_gds_get_input_param),
1094                 &get_params
1095         };
1096         struct wmid3_gds_set_input_param set_params = {
1097                 .function_num = 0x2,
1098                 .hotkey_number = commun_fn_key_number,
1099                 .devices = commun_func_bitmap,
1100         };
1101         struct acpi_buffer set_input = {
1102                 sizeof(struct wmid3_gds_set_input_param),
1103                 &set_params
1104         };
1105         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1106         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1107
1108         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1109         if (ACPI_FAILURE(status))
1110                 return status;
1111
1112         obj = output.pointer;
1113
1114         if (!obj)
1115                 return AE_ERROR;
1116         else if (obj->type != ACPI_TYPE_BUFFER) {
1117                 kfree(obj);
1118                 return AE_ERROR;
1119         }
1120         if (obj->buffer.length != 8) {
1121                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1122                 kfree(obj);
1123                 return AE_ERROR;
1124         }
1125
1126         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1127         kfree(obj);
1128
1129         if (return_value.error_code || return_value.ec_return_value) {
1130                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1131                         return_value.error_code,
1132                         return_value.ec_return_value);
1133                 return status;
1134         }
1135
1136         devices = return_value.devices;
1137         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1138
1139         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1140         if (ACPI_FAILURE(status))
1141                 return status;
1142
1143         obj = output2.pointer;
1144
1145         if (!obj)
1146                 return AE_ERROR;
1147         else if (obj->type != ACPI_TYPE_BUFFER) {
1148                 kfree(obj);
1149                 return AE_ERROR;
1150         }
1151         if (obj->buffer.length != 4) {
1152                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1153                 kfree(obj);
1154                 return AE_ERROR;
1155         }
1156
1157         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1158         kfree(obj);
1159
1160         if (return_value.error_code || return_value.ec_return_value)
1161                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1162                         return_value.error_code,
1163                         return_value.ec_return_value);
1164
1165         return status;
1166 }
1167
1168 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1169 {
1170         u16 device;
1171
1172         switch (cap) {
1173         case ACER_CAP_WIRELESS:
1174                 device = ACER_WMID3_GDS_WIRELESS;
1175                 break;
1176         case ACER_CAP_BLUETOOTH:
1177                 device = ACER_WMID3_GDS_BLUETOOTH;
1178                 break;
1179         case ACER_CAP_THREEG:
1180                 device = ACER_WMID3_GDS_THREEG;
1181                 break;
1182         default:
1183                 return AE_ERROR;
1184         }
1185         return wmid3_set_device_status(value, device);
1186 }
1187
1188 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1189 {
1190         struct hotkey_function_type_aa *type_aa;
1191
1192         /* We are looking for OEM-specific Type AAh */
1193         if (header->type != 0xAA)
1194                 return;
1195
1196         has_type_aa = true;
1197         type_aa = (struct hotkey_function_type_aa *) header;
1198
1199         pr_info("Function bitmap for Communication Button: 0x%x\n",
1200                 type_aa->commun_func_bitmap);
1201         commun_func_bitmap = type_aa->commun_func_bitmap;
1202
1203         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1204                 interface->capability |= ACER_CAP_WIRELESS;
1205         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1206                 interface->capability |= ACER_CAP_THREEG;
1207         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1208                 interface->capability |= ACER_CAP_BLUETOOTH;
1209
1210         commun_fn_key_number = type_aa->commun_fn_key_number;
1211 }
1212
1213 static acpi_status __init WMID_set_capabilities(void)
1214 {
1215         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1216         union acpi_object *obj;
1217         acpi_status status;
1218         u32 devices;
1219
1220         status = wmi_query_block(WMID_GUID2, 1, &out);
1221         if (ACPI_FAILURE(status))
1222                 return status;
1223
1224         obj = (union acpi_object *) out.pointer;
1225         if (obj) {
1226                 if (obj->type == ACPI_TYPE_BUFFER &&
1227                         (obj->buffer.length == sizeof(u32) ||
1228                         obj->buffer.length == sizeof(u64))) {
1229                         devices = *((u32 *) obj->buffer.pointer);
1230                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1231                         devices = (u32) obj->integer.value;
1232                 } else {
1233                         kfree(out.pointer);
1234                         return AE_ERROR;
1235                 }
1236         } else {
1237                 kfree(out.pointer);
1238                 return AE_ERROR;
1239         }
1240
1241         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1242         if (devices & 0x07)
1243                 interface->capability |= ACER_CAP_WIRELESS;
1244         if (devices & 0x40)
1245                 interface->capability |= ACER_CAP_THREEG;
1246         if (devices & 0x10)
1247                 interface->capability |= ACER_CAP_BLUETOOTH;
1248
1249         if (!(devices & 0x20))
1250                 max_brightness = 0x9;
1251
1252         kfree(out.pointer);
1253         return status;
1254 }
1255
1256 static struct wmi_interface wmid_interface = {
1257         .type = ACER_WMID,
1258 };
1259
1260 static struct wmi_interface wmid_v2_interface = {
1261         .type = ACER_WMID_v2,
1262 };
1263
1264 /*
1265  * Generic Device (interface-independent)
1266  */
1267
1268 static acpi_status get_u32(u32 *value, u32 cap)
1269 {
1270         acpi_status status = AE_ERROR;
1271
1272         switch (interface->type) {
1273         case ACER_AMW0:
1274                 status = AMW0_get_u32(value, cap);
1275                 break;
1276         case ACER_AMW0_V2:
1277                 if (cap == ACER_CAP_MAILLED) {
1278                         status = AMW0_get_u32(value, cap);
1279                         break;
1280                 }
1281         case ACER_WMID:
1282                 status = WMID_get_u32(value, cap);
1283                 break;
1284         case ACER_WMID_v2:
1285                 if (cap & (ACER_CAP_WIRELESS |
1286                            ACER_CAP_BLUETOOTH |
1287                            ACER_CAP_THREEG))
1288                         status = wmid_v2_get_u32(value, cap);
1289                 else if (wmi_has_guid(WMID_GUID2))
1290                         status = WMID_get_u32(value, cap);
1291                 break;
1292         }
1293
1294         return status;
1295 }
1296
1297 static acpi_status set_u32(u32 value, u32 cap)
1298 {
1299         acpi_status status;
1300
1301         if (interface->capability & cap) {
1302                 switch (interface->type) {
1303                 case ACER_AMW0:
1304                         return AMW0_set_u32(value, cap);
1305                 case ACER_AMW0_V2:
1306                         if (cap == ACER_CAP_MAILLED)
1307                                 return AMW0_set_u32(value, cap);
1308
1309                         /*
1310                          * On some models, some WMID methods don't toggle
1311                          * properly. For those cases, we want to run the AMW0
1312                          * method afterwards to be certain we've really toggled
1313                          * the device state.
1314                          */
1315                         if (cap == ACER_CAP_WIRELESS ||
1316                                 cap == ACER_CAP_BLUETOOTH) {
1317                                 status = WMID_set_u32(value, cap);
1318                                 if (ACPI_FAILURE(status))
1319                                         return status;
1320
1321                                 return AMW0_set_u32(value, cap);
1322                         }
1323                 case ACER_WMID:
1324                         return WMID_set_u32(value, cap);
1325                 case ACER_WMID_v2:
1326                         if (cap & (ACER_CAP_WIRELESS |
1327                                    ACER_CAP_BLUETOOTH |
1328                                    ACER_CAP_THREEG))
1329                                 return wmid_v2_set_u32(value, cap);
1330                         else if (wmi_has_guid(WMID_GUID2))
1331                                 return WMID_set_u32(value, cap);
1332                 default:
1333                         return AE_BAD_PARAMETER;
1334                 }
1335         }
1336         return AE_BAD_PARAMETER;
1337 }
1338
1339 static void __init acer_commandline_init(void)
1340 {
1341         /*
1342          * These will all fail silently if the value given is invalid, or the
1343          * capability isn't available on the given interface
1344          */
1345         if (mailled >= 0)
1346                 set_u32(mailled, ACER_CAP_MAILLED);
1347         if (!has_type_aa && threeg >= 0)
1348                 set_u32(threeg, ACER_CAP_THREEG);
1349         if (brightness >= 0)
1350                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1351 }
1352
1353 /*
1354  * LED device (Mail LED only, no other LEDs known yet)
1355  */
1356 static void mail_led_set(struct led_classdev *led_cdev,
1357 enum led_brightness value)
1358 {
1359         set_u32(value, ACER_CAP_MAILLED);
1360 }
1361
1362 static struct led_classdev mail_led = {
1363         .name = "acer-wmi::mail",
1364         .brightness_set = mail_led_set,
1365 };
1366
1367 static int acer_led_init(struct device *dev)
1368 {
1369         return led_classdev_register(dev, &mail_led);
1370 }
1371
1372 static void acer_led_exit(void)
1373 {
1374         set_u32(LED_OFF, ACER_CAP_MAILLED);
1375         led_classdev_unregister(&mail_led);
1376 }
1377
1378 /*
1379  * Backlight device
1380  */
1381 static struct backlight_device *acer_backlight_device;
1382
1383 static int read_brightness(struct backlight_device *bd)
1384 {
1385         u32 value;
1386         get_u32(&value, ACER_CAP_BRIGHTNESS);
1387         return value;
1388 }
1389
1390 static int update_bl_status(struct backlight_device *bd)
1391 {
1392         int intensity = bd->props.brightness;
1393
1394         if (bd->props.power != FB_BLANK_UNBLANK)
1395                 intensity = 0;
1396         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1397                 intensity = 0;
1398
1399         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1400
1401         return 0;
1402 }
1403
1404 static const struct backlight_ops acer_bl_ops = {
1405         .get_brightness = read_brightness,
1406         .update_status = update_bl_status,
1407 };
1408
1409 static int acer_backlight_init(struct device *dev)
1410 {
1411         struct backlight_properties props;
1412         struct backlight_device *bd;
1413
1414         memset(&props, 0, sizeof(struct backlight_properties));
1415         props.type = BACKLIGHT_PLATFORM;
1416         props.max_brightness = max_brightness;
1417         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1418                                        &props);
1419         if (IS_ERR(bd)) {
1420                 pr_err("Could not register Acer backlight device\n");
1421                 acer_backlight_device = NULL;
1422                 return PTR_ERR(bd);
1423         }
1424
1425         acer_backlight_device = bd;
1426
1427         bd->props.power = FB_BLANK_UNBLANK;
1428         bd->props.brightness = read_brightness(bd);
1429         backlight_update_status(bd);
1430         return 0;
1431 }
1432
1433 static void acer_backlight_exit(void)
1434 {
1435         backlight_device_unregister(acer_backlight_device);
1436 }
1437
1438 /*
1439  * Accelerometer device
1440  */
1441 static acpi_handle gsensor_handle;
1442
1443 static int acer_gsensor_init(void)
1444 {
1445         acpi_status status;
1446         struct acpi_buffer output;
1447         union acpi_object out_obj;
1448
1449         output.length = sizeof(out_obj);
1450         output.pointer = &out_obj;
1451         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1452         if (ACPI_FAILURE(status))
1453                 return -1;
1454
1455         return 0;
1456 }
1457
1458 static int acer_gsensor_open(struct input_dev *input)
1459 {
1460         return acer_gsensor_init();
1461 }
1462
1463 static int acer_gsensor_event(void)
1464 {
1465         acpi_status status;
1466         struct acpi_buffer output;
1467         union acpi_object out_obj[5];
1468
1469         if (!has_cap(ACER_CAP_ACCEL))
1470                 return -1;
1471
1472         output.length = sizeof(out_obj);
1473         output.pointer = out_obj;
1474
1475         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1476         if (ACPI_FAILURE(status))
1477                 return -1;
1478
1479         if (out_obj->package.count != 4)
1480                 return -1;
1481
1482         input_report_abs(acer_wmi_accel_dev, ABS_X,
1483                 (s16)out_obj->package.elements[0].integer.value);
1484         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1485                 (s16)out_obj->package.elements[1].integer.value);
1486         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1487                 (s16)out_obj->package.elements[2].integer.value);
1488         input_sync(acer_wmi_accel_dev);
1489         return 0;
1490 }
1491
1492 /*
1493  * Rfkill devices
1494  */
1495 static void acer_rfkill_update(struct work_struct *ignored);
1496 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1497 static void acer_rfkill_update(struct work_struct *ignored)
1498 {
1499         u32 state;
1500         acpi_status status;
1501
1502         if (has_cap(ACER_CAP_WIRELESS)) {
1503                 status = get_u32(&state, ACER_CAP_WIRELESS);
1504                 if (ACPI_SUCCESS(status)) {
1505                         if (quirks->wireless == 3)
1506                                 rfkill_set_hw_state(wireless_rfkill, !state);
1507                         else
1508                                 rfkill_set_sw_state(wireless_rfkill, !state);
1509                 }
1510         }
1511
1512         if (has_cap(ACER_CAP_BLUETOOTH)) {
1513                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1514                 if (ACPI_SUCCESS(status))
1515                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1516         }
1517
1518         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1519                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1520                 if (ACPI_SUCCESS(status))
1521                         rfkill_set_sw_state(threeg_rfkill, !state);
1522         }
1523
1524         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1525 }
1526
1527 static int acer_rfkill_set(void *data, bool blocked)
1528 {
1529         acpi_status status;
1530         u32 cap = (unsigned long)data;
1531
1532         if (rfkill_inited) {
1533                 status = set_u32(!blocked, cap);
1534                 if (ACPI_FAILURE(status))
1535                         return -ENODEV;
1536         }
1537
1538         return 0;
1539 }
1540
1541 static const struct rfkill_ops acer_rfkill_ops = {
1542         .set_block = acer_rfkill_set,
1543 };
1544
1545 static struct rfkill *acer_rfkill_register(struct device *dev,
1546                                            enum rfkill_type type,
1547                                            char *name, u32 cap)
1548 {
1549         int err;
1550         struct rfkill *rfkill_dev;
1551         u32 state;
1552         acpi_status status;
1553
1554         rfkill_dev = rfkill_alloc(name, dev, type,
1555                                   &acer_rfkill_ops,
1556                                   (void *)(unsigned long)cap);
1557         if (!rfkill_dev)
1558                 return ERR_PTR(-ENOMEM);
1559
1560         status = get_u32(&state, cap);
1561
1562         err = rfkill_register(rfkill_dev);
1563         if (err) {
1564                 rfkill_destroy(rfkill_dev);
1565                 return ERR_PTR(err);
1566         }
1567
1568         if (ACPI_SUCCESS(status))
1569                 rfkill_set_sw_state(rfkill_dev, !state);
1570
1571         return rfkill_dev;
1572 }
1573
1574 static int acer_rfkill_init(struct device *dev)
1575 {
1576         int err;
1577
1578         if (has_cap(ACER_CAP_WIRELESS)) {
1579                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1580                         "acer-wireless", ACER_CAP_WIRELESS);
1581                 if (IS_ERR(wireless_rfkill)) {
1582                         err = PTR_ERR(wireless_rfkill);
1583                         goto error_wireless;
1584                 }
1585         }
1586
1587         if (has_cap(ACER_CAP_BLUETOOTH)) {
1588                 bluetooth_rfkill = acer_rfkill_register(dev,
1589                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1590                         ACER_CAP_BLUETOOTH);
1591                 if (IS_ERR(bluetooth_rfkill)) {
1592                         err = PTR_ERR(bluetooth_rfkill);
1593                         goto error_bluetooth;
1594                 }
1595         }
1596
1597         if (has_cap(ACER_CAP_THREEG)) {
1598                 threeg_rfkill = acer_rfkill_register(dev,
1599                         RFKILL_TYPE_WWAN, "acer-threeg",
1600                         ACER_CAP_THREEG);
1601                 if (IS_ERR(threeg_rfkill)) {
1602                         err = PTR_ERR(threeg_rfkill);
1603                         goto error_threeg;
1604                 }
1605         }
1606
1607         rfkill_inited = true;
1608
1609         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1610             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1611                 schedule_delayed_work(&acer_rfkill_work,
1612                         round_jiffies_relative(HZ));
1613
1614         return 0;
1615
1616 error_threeg:
1617         if (has_cap(ACER_CAP_BLUETOOTH)) {
1618                 rfkill_unregister(bluetooth_rfkill);
1619                 rfkill_destroy(bluetooth_rfkill);
1620         }
1621 error_bluetooth:
1622         if (has_cap(ACER_CAP_WIRELESS)) {
1623                 rfkill_unregister(wireless_rfkill);
1624                 rfkill_destroy(wireless_rfkill);
1625         }
1626 error_wireless:
1627         return err;
1628 }
1629
1630 static void acer_rfkill_exit(void)
1631 {
1632         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1633             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1634                 cancel_delayed_work_sync(&acer_rfkill_work);
1635
1636         if (has_cap(ACER_CAP_WIRELESS)) {
1637                 rfkill_unregister(wireless_rfkill);
1638                 rfkill_destroy(wireless_rfkill);
1639         }
1640
1641         if (has_cap(ACER_CAP_BLUETOOTH)) {
1642                 rfkill_unregister(bluetooth_rfkill);
1643                 rfkill_destroy(bluetooth_rfkill);
1644         }
1645
1646         if (has_cap(ACER_CAP_THREEG)) {
1647                 rfkill_unregister(threeg_rfkill);
1648                 rfkill_destroy(threeg_rfkill);
1649         }
1650         return;
1651 }
1652
1653 /*
1654  * sysfs interface
1655  */
1656 static ssize_t show_bool_threeg(struct device *dev,
1657         struct device_attribute *attr, char *buf)
1658 {
1659         u32 result; \
1660         acpi_status status;
1661
1662         pr_info("This threeg sysfs will be removed in 2014 - used by: %s\n",
1663                 current->comm);
1664         status = get_u32(&result, ACER_CAP_THREEG);
1665         if (ACPI_SUCCESS(status))
1666                 return sprintf(buf, "%u\n", result);
1667         return sprintf(buf, "Read error\n");
1668 }
1669
1670 static ssize_t set_bool_threeg(struct device *dev,
1671         struct device_attribute *attr, const char *buf, size_t count)
1672 {
1673         u32 tmp = simple_strtoul(buf, NULL, 10);
1674         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1675         pr_info("This threeg sysfs will be removed in 2014 - used by: %s\n",
1676                 current->comm);
1677         if (ACPI_FAILURE(status))
1678                 return -EINVAL;
1679         return count;
1680 }
1681 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1682         set_bool_threeg);
1683
1684 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1685         char *buf)
1686 {
1687         pr_info("This interface sysfs will be removed in 2014 - used by: %s\n",
1688                 current->comm);
1689         switch (interface->type) {
1690         case ACER_AMW0:
1691                 return sprintf(buf, "AMW0\n");
1692         case ACER_AMW0_V2:
1693                 return sprintf(buf, "AMW0 v2\n");
1694         case ACER_WMID:
1695                 return sprintf(buf, "WMID\n");
1696         case ACER_WMID_v2:
1697                 return sprintf(buf, "WMID v2\n");
1698         default:
1699                 return sprintf(buf, "Error!\n");
1700         }
1701 }
1702
1703 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1704
1705 static void acer_wmi_notify(u32 value, void *context)
1706 {
1707         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1708         union acpi_object *obj;
1709         struct event_return_value return_value;
1710         acpi_status status;
1711         u16 device_state;
1712         const struct key_entry *key;
1713         u32 scancode;
1714
1715         status = wmi_get_event_data(value, &response);
1716         if (status != AE_OK) {
1717                 pr_warn("bad event status 0x%x\n", status);
1718                 return;
1719         }
1720
1721         obj = (union acpi_object *)response.pointer;
1722
1723         if (!obj)
1724                 return;
1725         if (obj->type != ACPI_TYPE_BUFFER) {
1726                 pr_warn("Unknown response received %d\n", obj->type);
1727                 kfree(obj);
1728                 return;
1729         }
1730         if (obj->buffer.length != 8) {
1731                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1732                 kfree(obj);
1733                 return;
1734         }
1735
1736         return_value = *((struct event_return_value *)obj->buffer.pointer);
1737         kfree(obj);
1738
1739         switch (return_value.function) {
1740         case WMID_HOTKEY_EVENT:
1741                 device_state = return_value.device_state;
1742                 pr_debug("device state: 0x%x\n", device_state);
1743
1744                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1745                                                         return_value.key_num);
1746                 if (!key) {
1747                         pr_warn("Unknown key number - 0x%x\n",
1748                                 return_value.key_num);
1749                 } else {
1750                         scancode = return_value.key_num;
1751                         switch (key->keycode) {
1752                         case KEY_WLAN:
1753                         case KEY_BLUETOOTH:
1754                                 if (has_cap(ACER_CAP_WIRELESS))
1755                                         rfkill_set_sw_state(wireless_rfkill,
1756                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1757                                 if (has_cap(ACER_CAP_THREEG))
1758                                         rfkill_set_sw_state(threeg_rfkill,
1759                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1760                                 if (has_cap(ACER_CAP_BLUETOOTH))
1761                                         rfkill_set_sw_state(bluetooth_rfkill,
1762                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1763                                 break;
1764                         case KEY_TOUCHPAD_TOGGLE:
1765                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1766                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1767                         }
1768                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1769                 }
1770                 break;
1771         case WMID_ACCEL_EVENT:
1772                 acer_gsensor_event();
1773                 break;
1774         default:
1775                 pr_warn("Unknown function number - %d - %d\n",
1776                         return_value.function, return_value.key_num);
1777                 break;
1778         }
1779 }
1780
1781 static acpi_status __init
1782 wmid3_set_lm_mode(struct lm_input_params *params,
1783                   struct lm_return_value *return_value)
1784 {
1785         acpi_status status;
1786         union acpi_object *obj;
1787
1788         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1789         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1790
1791         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1792         if (ACPI_FAILURE(status))
1793                 return status;
1794
1795         obj = output.pointer;
1796
1797         if (!obj)
1798                 return AE_ERROR;
1799         else if (obj->type != ACPI_TYPE_BUFFER) {
1800                 kfree(obj);
1801                 return AE_ERROR;
1802         }
1803         if (obj->buffer.length != 4) {
1804                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1805                 kfree(obj);
1806                 return AE_ERROR;
1807         }
1808
1809         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1810         kfree(obj);
1811
1812         return status;
1813 }
1814
1815 static int __init acer_wmi_enable_ec_raw(void)
1816 {
1817         struct lm_return_value return_value;
1818         acpi_status status;
1819         struct lm_input_params params = {
1820                 .function_num = 0x1,
1821                 .commun_devices = 0xFFFF,
1822                 .devices = 0xFFFF,
1823                 .lm_status = 0x00,            /* Launch Manager Deactive */
1824         };
1825
1826         status = wmid3_set_lm_mode(&params, &return_value);
1827
1828         if (return_value.error_code || return_value.ec_return_value)
1829                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1830                         return_value.error_code,
1831                         return_value.ec_return_value);
1832         else
1833                 pr_info("Enabled EC raw mode\n");
1834
1835         return status;
1836 }
1837
1838 static int __init acer_wmi_enable_lm(void)
1839 {
1840         struct lm_return_value return_value;
1841         acpi_status status;
1842         struct lm_input_params params = {
1843                 .function_num = 0x1,
1844                 .commun_devices = 0xFFFF,
1845                 .devices = 0xFFFF,
1846                 .lm_status = 0x01,            /* Launch Manager Active */
1847         };
1848
1849         status = wmid3_set_lm_mode(&params, &return_value);
1850
1851         if (return_value.error_code || return_value.ec_return_value)
1852                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1853                         return_value.error_code,
1854                         return_value.ec_return_value);
1855
1856         return status;
1857 }
1858
1859 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1860                                                 void *ctx, void **retval)
1861 {
1862         *(acpi_handle *)retval = ah;
1863         return AE_OK;
1864 }
1865
1866 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1867                                         acpi_handle *ah)
1868 {
1869         acpi_status status;
1870         acpi_handle handle;
1871
1872         BUG_ON(!name || !ah);
1873
1874         handle = NULL;
1875         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1876                                         (void *)name, &handle);
1877
1878         if (ACPI_SUCCESS(status)) {
1879                 *ah = handle;
1880                 return 0;
1881         } else {
1882                 return -ENODEV;
1883         }
1884 }
1885
1886 static int __init acer_wmi_accel_setup(void)
1887 {
1888         int err;
1889
1890         err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1891         if (err)
1892                 return err;
1893
1894         interface->capability |= ACER_CAP_ACCEL;
1895
1896         acer_wmi_accel_dev = input_allocate_device();
1897         if (!acer_wmi_accel_dev)
1898                 return -ENOMEM;
1899
1900         acer_wmi_accel_dev->open = acer_gsensor_open;
1901
1902         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1903         acer_wmi_accel_dev->phys = "wmi/input1";
1904         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1905         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1906         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1907         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1908         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1909
1910         err = input_register_device(acer_wmi_accel_dev);
1911         if (err)
1912                 goto err_free_dev;
1913
1914         return 0;
1915
1916 err_free_dev:
1917         input_free_device(acer_wmi_accel_dev);
1918         return err;
1919 }
1920
1921 static void acer_wmi_accel_destroy(void)
1922 {
1923         input_unregister_device(acer_wmi_accel_dev);
1924 }
1925
1926 static int __init acer_wmi_input_setup(void)
1927 {
1928         acpi_status status;
1929         int err;
1930
1931         acer_wmi_input_dev = input_allocate_device();
1932         if (!acer_wmi_input_dev)
1933                 return -ENOMEM;
1934
1935         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1936         acer_wmi_input_dev->phys = "wmi/input0";
1937         acer_wmi_input_dev->id.bustype = BUS_HOST;
1938
1939         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1940         if (err)
1941                 goto err_free_dev;
1942
1943         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1944                                                 acer_wmi_notify, NULL);
1945         if (ACPI_FAILURE(status)) {
1946                 err = -EIO;
1947                 goto err_free_keymap;
1948         }
1949
1950         err = input_register_device(acer_wmi_input_dev);
1951         if (err)
1952                 goto err_uninstall_notifier;
1953
1954         return 0;
1955
1956 err_uninstall_notifier:
1957         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1958 err_free_keymap:
1959         sparse_keymap_free(acer_wmi_input_dev);
1960 err_free_dev:
1961         input_free_device(acer_wmi_input_dev);
1962         return err;
1963 }
1964
1965 static void acer_wmi_input_destroy(void)
1966 {
1967         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1968         sparse_keymap_free(acer_wmi_input_dev);
1969         input_unregister_device(acer_wmi_input_dev);
1970 }
1971
1972 /*
1973  * debugfs functions
1974  */
1975 static u32 get_wmid_devices(void)
1976 {
1977         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1978         union acpi_object *obj;
1979         acpi_status status;
1980         u32 devices = 0;
1981
1982         status = wmi_query_block(WMID_GUID2, 1, &out);
1983         if (ACPI_FAILURE(status))
1984                 return 0;
1985
1986         obj = (union acpi_object *) out.pointer;
1987         if (obj) {
1988                 if (obj->type == ACPI_TYPE_BUFFER &&
1989                         (obj->buffer.length == sizeof(u32) ||
1990                         obj->buffer.length == sizeof(u64))) {
1991                         devices = *((u32 *) obj->buffer.pointer);
1992                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1993                         devices = (u32) obj->integer.value;
1994                 }
1995         }
1996
1997         kfree(out.pointer);
1998         return devices;
1999 }
2000
2001 /*
2002  * Platform device
2003  */
2004 static int acer_platform_probe(struct platform_device *device)
2005 {
2006         int err;
2007
2008         if (has_cap(ACER_CAP_MAILLED)) {
2009                 err = acer_led_init(&device->dev);
2010                 if (err)
2011                         goto error_mailled;
2012         }
2013
2014         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2015                 err = acer_backlight_init(&device->dev);
2016                 if (err)
2017                         goto error_brightness;
2018         }
2019
2020         err = acer_rfkill_init(&device->dev);
2021         if (err)
2022                 goto error_rfkill;
2023
2024         return err;
2025
2026 error_rfkill:
2027         if (has_cap(ACER_CAP_BRIGHTNESS))
2028                 acer_backlight_exit();
2029 error_brightness:
2030         if (has_cap(ACER_CAP_MAILLED))
2031                 acer_led_exit();
2032 error_mailled:
2033         return err;
2034 }
2035
2036 static int acer_platform_remove(struct platform_device *device)
2037 {
2038         if (has_cap(ACER_CAP_MAILLED))
2039                 acer_led_exit();
2040         if (has_cap(ACER_CAP_BRIGHTNESS))
2041                 acer_backlight_exit();
2042
2043         acer_rfkill_exit();
2044         return 0;
2045 }
2046
2047 #ifdef CONFIG_PM_SLEEP
2048 static int acer_suspend(struct device *dev)
2049 {
2050         u32 value;
2051         struct acer_data *data = &interface->data;
2052
2053         if (!data)
2054                 return -ENOMEM;
2055
2056         if (has_cap(ACER_CAP_MAILLED)) {
2057                 get_u32(&value, ACER_CAP_MAILLED);
2058                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2059                 data->mailled = value;
2060         }
2061
2062         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2063                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2064                 data->brightness = value;
2065         }
2066
2067         return 0;
2068 }
2069
2070 static int acer_resume(struct device *dev)
2071 {
2072         struct acer_data *data = &interface->data;
2073
2074         if (!data)
2075                 return -ENOMEM;
2076
2077         if (has_cap(ACER_CAP_MAILLED))
2078                 set_u32(data->mailled, ACER_CAP_MAILLED);
2079
2080         if (has_cap(ACER_CAP_BRIGHTNESS))
2081                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2082
2083         if (has_cap(ACER_CAP_ACCEL))
2084                 acer_gsensor_init();
2085
2086         return 0;
2087 }
2088 #else
2089 #define acer_suspend    NULL
2090 #define acer_resume     NULL
2091 #endif
2092
2093 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2094
2095 static void acer_platform_shutdown(struct platform_device *device)
2096 {
2097         struct acer_data *data = &interface->data;
2098
2099         if (!data)
2100                 return;
2101
2102         if (has_cap(ACER_CAP_MAILLED))
2103                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2104 }
2105
2106 static struct platform_driver acer_platform_driver = {
2107         .driver = {
2108                 .name = "acer-wmi",
2109                 .owner = THIS_MODULE,
2110                 .pm = &acer_pm,
2111         },
2112         .probe = acer_platform_probe,
2113         .remove = acer_platform_remove,
2114         .shutdown = acer_platform_shutdown,
2115 };
2116
2117 static struct platform_device *acer_platform_device;
2118
2119 static int remove_sysfs(struct platform_device *device)
2120 {
2121         if (has_cap(ACER_CAP_THREEG))
2122                 device_remove_file(&device->dev, &dev_attr_threeg);
2123
2124         device_remove_file(&device->dev, &dev_attr_interface);
2125
2126         return 0;
2127 }
2128
2129 static int __init create_sysfs(void)
2130 {
2131         int retval = -ENOMEM;
2132
2133         if (has_cap(ACER_CAP_THREEG)) {
2134                 retval = device_create_file(&acer_platform_device->dev,
2135                         &dev_attr_threeg);
2136                 if (retval)
2137                         goto error_sysfs;
2138         }
2139
2140         retval = device_create_file(&acer_platform_device->dev,
2141                 &dev_attr_interface);
2142         if (retval)
2143                 goto error_sysfs;
2144
2145         return 0;
2146
2147 error_sysfs:
2148                 remove_sysfs(acer_platform_device);
2149         return retval;
2150 }
2151
2152 static void remove_debugfs(void)
2153 {
2154         debugfs_remove(interface->debug.devices);
2155         debugfs_remove(interface->debug.root);
2156 }
2157
2158 static int __init create_debugfs(void)
2159 {
2160         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2161         if (!interface->debug.root) {
2162                 pr_err("Failed to create debugfs directory");
2163                 return -ENOMEM;
2164         }
2165
2166         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2167                                         interface->debug.root,
2168                                         &interface->debug.wmid_devices);
2169         if (!interface->debug.devices)
2170                 goto error_debugfs;
2171
2172         return 0;
2173
2174 error_debugfs:
2175         remove_debugfs();
2176         return -ENOMEM;
2177 }
2178
2179 static int __init acer_wmi_init(void)
2180 {
2181         int err;
2182
2183         pr_info("Acer Laptop ACPI-WMI Extras\n");
2184
2185         if (dmi_check_system(acer_blacklist)) {
2186                 pr_info("Blacklisted hardware detected - not loading\n");
2187                 return -ENODEV;
2188         }
2189
2190         find_quirks();
2191
2192         /*
2193          * Detect which ACPI-WMI interface we're using.
2194          */
2195         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2196                 interface = &AMW0_V2_interface;
2197
2198         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2199                 interface = &wmid_interface;
2200
2201         if (wmi_has_guid(WMID_GUID3))
2202                 interface = &wmid_v2_interface;
2203
2204         if (interface)
2205                 dmi_walk(type_aa_dmi_decode, NULL);
2206
2207         if (wmi_has_guid(WMID_GUID2) && interface) {
2208                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2209                         pr_err("Unable to detect available WMID devices\n");
2210                         return -ENODEV;
2211                 }
2212                 /* WMID always provides brightness methods */
2213                 interface->capability |= ACER_CAP_BRIGHTNESS;
2214         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2215                 pr_err("No WMID device detection method found\n");
2216                 return -ENODEV;
2217         }
2218
2219         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2220                 interface = &AMW0_interface;
2221
2222                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2223                         pr_err("Unable to detect available AMW0 devices\n");
2224                         return -ENODEV;
2225                 }
2226         }
2227
2228         if (wmi_has_guid(AMW0_GUID1))
2229                 AMW0_find_mailled();
2230
2231         if (!interface) {
2232                 pr_err("No or unsupported WMI interface, unable to load\n");
2233                 return -ENODEV;
2234         }
2235
2236         set_quirks();
2237
2238         if (dmi_check_system(video_vendor_dmi_table))
2239                 acpi_video_dmi_promote_vendor();
2240         if (acpi_video_backlight_support()) {
2241                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2242                 pr_info("Brightness must be controlled by acpi video driver\n");
2243         } else {
2244                 pr_info("Disabling ACPI video driver\n");
2245                 acpi_video_unregister_backlight();
2246         }
2247
2248         if (wmi_has_guid(WMID_GUID3)) {
2249                 if (ec_raw_mode) {
2250                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2251                                 pr_err("Cannot enable EC raw mode\n");
2252                                 return -ENODEV;
2253                         }
2254                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2255                         pr_err("Cannot enable Launch Manager mode\n");
2256                         return -ENODEV;
2257                 }
2258         } else if (ec_raw_mode) {
2259                 pr_info("No WMID EC raw mode enable method\n");
2260         }
2261
2262         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2263                 err = acer_wmi_input_setup();
2264                 if (err)
2265                         return err;
2266         }
2267
2268         acer_wmi_accel_setup();
2269
2270         err = platform_driver_register(&acer_platform_driver);
2271         if (err) {
2272                 pr_err("Unable to register platform driver\n");
2273                 goto error_platform_register;
2274         }
2275
2276         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2277         if (!acer_platform_device) {
2278                 err = -ENOMEM;
2279                 goto error_device_alloc;
2280         }
2281
2282         err = platform_device_add(acer_platform_device);
2283         if (err)
2284                 goto error_device_add;
2285
2286         err = create_sysfs();
2287         if (err)
2288                 goto error_create_sys;
2289
2290         if (wmi_has_guid(WMID_GUID2)) {
2291                 interface->debug.wmid_devices = get_wmid_devices();
2292                 err = create_debugfs();
2293                 if (err)
2294                         goto error_create_debugfs;
2295         }
2296
2297         /* Override any initial settings with values from the commandline */
2298         acer_commandline_init();
2299
2300         return 0;
2301
2302 error_create_debugfs:
2303         remove_sysfs(acer_platform_device);
2304 error_create_sys:
2305         platform_device_del(acer_platform_device);
2306 error_device_add:
2307         platform_device_put(acer_platform_device);
2308 error_device_alloc:
2309         platform_driver_unregister(&acer_platform_driver);
2310 error_platform_register:
2311         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2312                 acer_wmi_input_destroy();
2313         if (has_cap(ACER_CAP_ACCEL))
2314                 acer_wmi_accel_destroy();
2315
2316         return err;
2317 }
2318
2319 static void __exit acer_wmi_exit(void)
2320 {
2321         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2322                 acer_wmi_input_destroy();
2323
2324         if (has_cap(ACER_CAP_ACCEL))
2325                 acer_wmi_accel_destroy();
2326
2327         remove_sysfs(acer_platform_device);
2328         remove_debugfs();
2329         platform_device_unregister(acer_platform_device);
2330         platform_driver_unregister(&acer_platform_driver);
2331
2332         pr_info("Acer Laptop WMI Extras unloaded\n");
2333         return;
2334 }
2335
2336 module_init(acer_wmi_init);
2337 module_exit(acer_wmi_exit);