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
  45 #include <acpi/acpi_drivers.h>
  46 #include <acpi/video.h>
  47
  48 MODULE_AUTHOR("Carlos Corbacho");
  49 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
  50 MODULE_LICENSE("GPL");
  51
  52 /*
  53  * Magic Number
  54  * Meaning is unknown - this number is required for writing to ACPI for AMW0
  55  * (it's also used in acerhk when directly accessing the BIOS)
  56  */
  57 #define ACER_AMW0_WRITE 0x9610
  58
  59 /*
  60  * Bit masks for the AMW0 interface
  61  */
  62 #define ACER_AMW0_WIRELESS_MASK  0x35
  63 #define ACER_AMW0_BLUETOOTH_MASK 0x34
  64 #define ACER_AMW0_MAILLED_MASK   0x31
  65
  66 /*
  67  * Method IDs for WMID interface
  68  */
  69 #define ACER_WMID_GET_WIRELESS_METHODID         1
  70 #define ACER_WMID_GET_BLUETOOTH_METHODID        2
  71 #define ACER_WMID_GET_BRIGHTNESS_METHODID       3
  72 #define ACER_WMID_SET_WIRELESS_METHODID         4
  73 #define ACER_WMID_SET_BLUETOOTH_METHODID        5
  74 #define ACER_WMID_SET_BRIGHTNESS_METHODID       6
  75 #define ACER_WMID_GET_THREEG_METHODID           10
  76 #define ACER_WMID_SET_THREEG_METHODID           11
  77
  78 /*
  79  * Acer ACPI method GUIDs
  80  */
  81 #define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
  82 #define AMW0_GUID2              "431F16ED-0C2B-444C-B267-27DEB140CF9C"
  83 #define WMID_GUID1              "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
  84 #define WMID_GUID2              "95764E09-FB56-4E83-B31A-37761F60994A"
  85 #define WMID_GUID3              "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
  86
  87 /*
  88  * Acer ACPI event GUIDs
  89  */
  90 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
  91
  92 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
  93 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
  94 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
  95
  96 enum acer_wmi_event_ids {
  97         WMID_HOTKEY_EVENT = 0x1,
  98         WMID_ACCEL_EVENT = 0x5,
  99 };
 100
 101 static const struct key_entry acer_wmi_keymap[] = {
 102         {KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
 103         {KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
 104         {KE_KEY, 0x04, {KEY_WLAN} },     /* WiFi */
 105         {KE_KEY, 0x12, {KEY_BLUETOOTH} },       /* BT */
 106         {KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
 107         {KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
 108         {KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
 109         {KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
 110         {KE_KEY, 0x29, {KEY_PROG3} },    /* P_Key for TM8372 */
 111         {KE_IGNORE, 0x41, {KEY_MUTE} },
 112         {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
 113         {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
 114         {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
 115         {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
 116         {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
 117         {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
 118         {KE_IGNORE, 0x45, {KEY_STOP} },
 119         {KE_IGNORE, 0x50, {KEY_STOP} },
 120         {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
 121         {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
 122         {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
 123         {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
 124         {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 125         {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 126         {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
 127         {KE_IGNORE, 0x81, {KEY_SLEEP} },
 128         {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
 129         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 130         {KE_END, 0}
 131 };
 132
 133 static struct input_dev *acer_wmi_input_dev;
 134 static struct input_dev *acer_wmi_accel_dev;
 135
 136 struct event_return_value {
 137         u8 function;
 138         u8 key_num;
 139         u16 device_state;
 140         u32 reserved;
 141 } __attribute__((packed));
 142
 143 /*
 144  * GUID3 Get Device Status device flags
 145  */
 146 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 147 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 148 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 149 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 150
 151 struct lm_input_params {
 152         u8 function_num;        /* Function Number */
 153         u16 commun_devices;     /* Communication type devices default status */
 154         u16 devices;            /* Other type devices default status */
 155         u8 lm_status;           /* Launch Manager Status */
 156         u16 reserved;
 157 } __attribute__((packed));
 158
 159 struct lm_return_value {
 160         u8 error_code;          /* Error Code */
 161         u8 ec_return_value;     /* EC Return Value */
 162         u16 reserved;
 163 } __attribute__((packed));
 164
 165 struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 166         u8 function_num;        /* Function Number */
 167         u8 hotkey_number;       /* Hotkey Number */
 168         u16 devices;            /* Set Device */
 169         u8 volume_value;        /* Volume Value */
 170 } __attribute__((packed));
 171
 172 struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 173         u8 function_num;        /* Function Number */
 174         u8 hotkey_number;       /* Hotkey Number */
 175         u16 devices;            /* Get Device */
 176 } __attribute__((packed));
 177
 178 struct wmid3_gds_return_value { /* Get Device Status return value*/
 179         u8 error_code;          /* Error Code */
 180         u8 ec_return_value;     /* EC Return Value */
 181         u16 devices;            /* Current Device Status */
 182         u32 reserved;
 183 } __attribute__((packed));
 184
 185 struct hotkey_function_type_aa {
 186         u8 type;
 187         u8 length;
 188         u16 handle;
 189         u16 commun_func_bitmap;
 190         u16 application_func_bitmap;
 191         u16 media_func_bitmap;
 192         u16 display_func_bitmap;
 193         u16 others_func_bitmap;
 194         u8 commun_fn_key_number;
 195 } __attribute__((packed));
 196
 197 /*
 198  * Interface capability flags
 199  */
 200 #define ACER_CAP_MAILLED                (1<<0)
 201 #define ACER_CAP_WIRELESS               (1<<1)
 202 #define ACER_CAP_BLUETOOTH              (1<<2)
 203 #define ACER_CAP_BRIGHTNESS             (1<<3)
 204 #define ACER_CAP_THREEG                 (1<<4)
 205 #define ACER_CAP_ACCEL                  (1<<5)
 206 #define ACER_CAP_ANY                    (0xFFFFFFFF)
 207
 208 /*
 209  * Interface type flags
 210  */
 211 enum interface_flags {
 212         ACER_AMW0,
 213         ACER_AMW0_V2,
 214         ACER_WMID,
 215         ACER_WMID_v2,
 216 };
 217
 218 #define ACER_DEFAULT_WIRELESS  0
 219 #define ACER_DEFAULT_BLUETOOTH 0
 220 #define ACER_DEFAULT_MAILLED   0
 221 #define ACER_DEFAULT_THREEG    0
 222
 223 static int max_brightness = 0xF;
 224
 225 static int mailled = -1;
 226 static int brightness = -1;
 227 static int threeg = -1;
 228 static int force_series;
 229 static bool ec_raw_mode;
 230 static bool has_type_aa;
 231 static u16 commun_func_bitmap;
 232 static u8 commun_fn_key_number;
 233
 234 module_param(mailled, int, 0444);
 235 module_param(brightness, int, 0444);
 236 module_param(threeg, int, 0444);
 237 module_param(force_series, int, 0444);
 238 module_param(ec_raw_mode, bool, 0444);
 239 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 240 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 241 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 242 MODULE_PARM_DESC(force_series, "Force a different laptop series");
 243 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 244
 245 struct acer_data {
 246         int mailled;
 247         int threeg;
 248         int brightness;
 249 };
 250
 251 struct acer_debug {
 252         struct dentry *root;
 253         struct dentry *devices;
 254         u32 wmid_devices;
 255 };
 256
 257 static struct rfkill *wireless_rfkill;
 258 static struct rfkill *bluetooth_rfkill;
 259 static struct rfkill *threeg_rfkill;
 260 static bool rfkill_inited;
 261
 262 /* Each low-level interface must define at least some of the following */
 263 struct wmi_interface {
 264         /* The WMI device type */
 265         u32 type;
 266
 267         /* The capabilities this interface provides */
 268         u32 capability;
 269
 270         /* Private data for the current interface */
 271         struct acer_data data;
 272
 273         /* debugfs entries associated with this interface */
 274         struct acer_debug debug;
 275 };
 276
 277 /* The static interface pointer, points to the currently detected interface */
 278 static struct wmi_interface *interface;
 279
 280 /*
 281  * Embedded Controller quirks
 282  * Some laptops require us to directly access the EC to either enable or query
 283  * features that are not available through WMI.
 284  */
 285
 286 struct quirk_entry {
 287         u8 wireless;
 288         u8 mailled;
 289         s8 brightness;
 290         u8 bluetooth;
 291 };
 292
 293 static struct quirk_entry *quirks;
 294
 295 static void set_quirks(void)
 296 {
 297         if (!interface)
 298                 return;
 299
 300         if (quirks->mailled)
 301                 interface->capability |= ACER_CAP_MAILLED;
 302
 303         if (quirks->brightness)
 304                 interface->capability |= ACER_CAP_BRIGHTNESS;
 305 }
 306
 307 static int dmi_matched(const struct dmi_system_id *dmi)
 308 {
 309         quirks = dmi->driver_data;
 310         return 1;
 311 }
 312
 313 static struct quirk_entry quirk_unknown = {
 314 };
 315
 316 static struct quirk_entry quirk_acer_aspire_1520 = {
 317         .brightness = -1,
 318 };
 319
 320 static struct quirk_entry quirk_acer_travelmate_2490 = {
 321         .mailled = 1,
 322 };
 323
 324 /* This AMW0 laptop has no bluetooth */
 325 static struct quirk_entry quirk_medion_md_98300 = {
 326         .wireless = 1,
 327 };
 328
 329 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 330         .wireless = 2,
 331 };
 332
 333 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 334         .wireless = 3,
 335 };
 336
 337 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
 338 static struct dmi_system_id acer_blacklist[] = {
 339         {
 340                 .ident = "Acer Aspire One (SSD)",
 341                 .matches = {
 342                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 343                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 344                 },
 345         },
 346         {
 347                 .ident = "Acer Aspire One (HDD)",
 348                 .matches = {
 349                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 350                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 351                 },
 352         },
 353         {}
 354 };
 355
 356 static struct dmi_system_id acer_quirks[] = {
 357         {
 358                 .callback = dmi_matched,
 359                 .ident = "Acer Aspire 1360",
 360                 .matches = {
 361                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 362                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 363                 },
 364                 .driver_data = &quirk_acer_aspire_1520,
 365         },
 366         {
 367                 .callback = dmi_matched,
 368                 .ident = "Acer Aspire 1520",
 369                 .matches = {
 370                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 371                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 372                 },
 373                 .driver_data = &quirk_acer_aspire_1520,
 374         },
 375         {
 376                 .callback = dmi_matched,
 377                 .ident = "Acer Aspire 3100",
 378                 .matches = {
 379                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 380                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 381                 },
 382                 .driver_data = &quirk_acer_travelmate_2490,
 383         },
 384         {
 385                 .callback = dmi_matched,
 386                 .ident = "Acer Aspire 3610",
 387                 .matches = {
 388                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 389                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 390                 },
 391                 .driver_data = &quirk_acer_travelmate_2490,
 392         },
 393         {
 394                 .callback = dmi_matched,
 395                 .ident = "Acer Aspire 5100",
 396                 .matches = {
 397                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 398                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 399                 },
 400                 .driver_data = &quirk_acer_travelmate_2490,
 401         },
 402         {
 403                 .callback = dmi_matched,
 404                 .ident = "Acer Aspire 5610",
 405                 .matches = {
 406                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 407                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 408                 },
 409                 .driver_data = &quirk_acer_travelmate_2490,
 410         },
 411         {
 412                 .callback = dmi_matched,
 413                 .ident = "Acer Aspire 5630",
 414                 .matches = {
 415                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 416                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 417                 },
 418                 .driver_data = &quirk_acer_travelmate_2490,
 419         },
 420         {
 421                 .callback = dmi_matched,
 422                 .ident = "Acer Aspire 5650",
 423                 .matches = {
 424                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 425                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 426                 },
 427                 .driver_data = &quirk_acer_travelmate_2490,
 428         },
 429         {
 430                 .callback = dmi_matched,
 431                 .ident = "Acer Aspire 5680",
 432                 .matches = {
 433                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 434                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 435                 },
 436                 .driver_data = &quirk_acer_travelmate_2490,
 437         },
 438         {
 439                 .callback = dmi_matched,
 440                 .ident = "Acer Aspire 9110",
 441                 .matches = {
 442                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 443                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 444                 },
 445                 .driver_data = &quirk_acer_travelmate_2490,
 446         },
 447         {
 448                 .callback = dmi_matched,
 449                 .ident = "Acer TravelMate 2490",
 450                 .matches = {
 451                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 452                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 453                 },
 454                 .driver_data = &quirk_acer_travelmate_2490,
 455         },
 456         {
 457                 .callback = dmi_matched,
 458                 .ident = "Acer TravelMate 4200",
 459                 .matches = {
 460                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 461                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 462                 },
 463                 .driver_data = &quirk_acer_travelmate_2490,
 464         },
 465         {
 466                 .callback = dmi_matched,
 467                 .ident = "Fujitsu Siemens Amilo Li 1718",
 468                 .matches = {
 469                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 470                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 471                 },
 472                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 473         },
 474         {
 475                 .callback = dmi_matched,
 476                 .ident = "Medion MD 98300",
 477                 .matches = {
 478                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 479                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 480                 },
 481                 .driver_data = &quirk_medion_md_98300,
 482         },
 483         {
 484                 .callback = dmi_matched,
 485                 .ident = "Lenovo Ideapad S205",
 486                 .matches = {
 487                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 488                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 489                 },
 490                 .driver_data = &quirk_lenovo_ideapad_s205,
 491         },
 492         {
 493                 .callback = dmi_matched,
 494                 .ident = "Lenovo Ideapad S205 (Brazos)",
 495                 .matches = {
 496                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 497                         DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 498                 },
 499                 .driver_data = &quirk_lenovo_ideapad_s205,
 500         },
 501         {
 502                 .callback = dmi_matched,
 503                 .ident = "Lenovo 3000 N200",
 504                 .matches = {
 505                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 506                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 507                 },
 508                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 509         },
 510         {}
 511 };
 512
 513 static int video_set_backlight_video_vendor(const struct dmi_system_id *d)
 514 {
 515         interface->capability &= ~ACER_CAP_BRIGHTNESS;
 516         pr_info("Brightness must be controlled by generic video driver\n");
 517         return 0;
 518 }
 519
 520 static const struct dmi_system_id video_vendor_dmi_table[] = {
 521         {
 522                 .callback = video_set_backlight_video_vendor,
 523                 .ident = "Acer TravelMate 4750",
 524                 .matches = {
 525                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 526                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 527                 },
 528         },
 529         {
 530                 .callback = video_set_backlight_video_vendor,
 531                 .ident = "Acer Extensa 5235",
 532                 .matches = {
 533                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 534                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 535                 },
 536         },
 537         {
 538                 .callback = video_set_backlight_video_vendor,
 539                 .ident = "Acer TravelMate 5760",
 540                 .matches = {
 541                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 542                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 543                 },
 544         },
 545         {
 546                 .callback = video_set_backlight_video_vendor,
 547                 .ident = "Acer Aspire 5750",
 548                 .matches = {
 549                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 550                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 551                 },
 552         },
 553         {}
 554 };
 555
 556 /* Find which quirks are needed for a particular vendor/ model pair */
 557 static void find_quirks(void)
 558 {
 559         if (!force_series) {
 560                 dmi_check_system(acer_quirks);
 561         } else if (force_series == 2490) {
 562                 quirks = &quirk_acer_travelmate_2490;
 563         }
 564
 565         if (quirks == NULL)
 566                 quirks = &quirk_unknown;
 567
 568         set_quirks();
 569 }
 570
 571 /*
 572  * General interface convenience methods
 573  */
 574
 575 static bool has_cap(u32 cap)
 576 {
 577         if ((interface->capability & cap) != 0)
 578                 return 1;
 579
 580         return 0;
 581 }
 582
 583 /*
 584  * AMW0 (V1) interface
 585  */
 586 struct wmab_args {
 587         u32 eax;
 588         u32 ebx;
 589         u32 ecx;
 590         u32 edx;
 591 };
 592
 593 struct wmab_ret {
 594         u32 eax;
 595         u32 ebx;
 596         u32 ecx;
 597         u32 edx;
 598         u32 eex;
 599 };
 600
 601 static acpi_status wmab_execute(struct wmab_args *regbuf,
 602 struct acpi_buffer *result)
 603 {
 604         struct acpi_buffer input;
 605         acpi_status status;
 606         input.length = sizeof(struct wmab_args);
 607         input.pointer = (u8 *)regbuf;
 608
 609         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
 610
 611         return status;
 612 }
 613
 614 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 615 {
 616         int err;
 617         u8 result;
 618
 619         switch (cap) {
 620         case ACER_CAP_MAILLED:
 621                 switch (quirks->mailled) {
 622                 default:
 623                         err = ec_read(0xA, &result);
 624                         if (err)
 625                                 return AE_ERROR;
 626                         *value = (result >> 7) & 0x1;
 627                         return AE_OK;
 628                 }
 629                 break;
 630         case ACER_CAP_WIRELESS:
 631                 switch (quirks->wireless) {
 632                 case 1:
 633                         err = ec_read(0x7B, &result);
 634                         if (err)
 635                                 return AE_ERROR;
 636                         *value = result & 0x1;
 637                         return AE_OK;
 638                 case 2:
 639                         err = ec_read(0x71, &result);
 640                         if (err)
 641                                 return AE_ERROR;
 642                         *value = result & 0x1;
 643                         return AE_OK;
 644                 case 3:
 645                         err = ec_read(0x78, &result);
 646                         if (err)
 647                                 return AE_ERROR;
 648                         *value = result & 0x1;
 649                         return AE_OK;
 650                 default:
 651                         err = ec_read(0xA, &result);
 652                         if (err)
 653                                 return AE_ERROR;
 654                         *value = (result >> 2) & 0x1;
 655                         return AE_OK;
 656                 }
 657                 break;
 658         case ACER_CAP_BLUETOOTH:
 659                 switch (quirks->bluetooth) {
 660                 default:
 661                         err = ec_read(0xA, &result);
 662                         if (err)
 663                                 return AE_ERROR;
 664                         *value = (result >> 4) & 0x1;
 665                         return AE_OK;
 666                 }
 667                 break;
 668         case ACER_CAP_BRIGHTNESS:
 669                 switch (quirks->brightness) {
 670                 default:
 671                         err = ec_read(0x83, &result);
 672                         if (err)
 673                                 return AE_ERROR;
 674                         *value = result;
 675                         return AE_OK;
 676                 }
 677                 break;
 678         default:
 679                 return AE_ERROR;
 680         }
 681         return AE_OK;
 682 }
 683
 684 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 685 {
 686         struct wmab_args args;
 687
 688         args.eax = ACER_AMW0_WRITE;
 689         args.ebx = value ? (1<<8) : 0;
 690         args.ecx = args.edx = 0;
 691
 692         switch (cap) {
 693         case ACER_CAP_MAILLED:
 694                 if (value > 1)
 695                         return AE_BAD_PARAMETER;
 696                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 697                 break;
 698         case ACER_CAP_WIRELESS:
 699                 if (value > 1)
 700                         return AE_BAD_PARAMETER;
 701                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 702                 break;
 703         case ACER_CAP_BLUETOOTH:
 704                 if (value > 1)
 705                         return AE_BAD_PARAMETER;
 706                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 707                 break;
 708         case ACER_CAP_BRIGHTNESS:
 709                 if (value > max_brightness)
 710                         return AE_BAD_PARAMETER;
 711                 switch (quirks->brightness) {
 712                 default:
 713                         return ec_write(0x83, value);
 714                         break;
 715                 }
 716         default:
 717                 return AE_ERROR;
 718         }
 719
 720         /* Actually do the set */
 721         return wmab_execute(&args, NULL);
 722 }
 723
 724 static acpi_status AMW0_find_mailled(void)
 725 {
 726         struct wmab_args args;
 727         struct wmab_ret ret;
 728         acpi_status status = AE_OK;
 729         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 730         union acpi_object *obj;
 731
 732         args.eax = 0x86;
 733         args.ebx = args.ecx = args.edx = 0;
 734
 735         status = wmab_execute(&args, &out);
 736         if (ACPI_FAILURE(status))
 737                 return status;
 738
 739         obj = (union acpi_object *) out.pointer;
 740         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 741         obj->buffer.length == sizeof(struct wmab_ret)) {
 742                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 743         } else {
 744                 kfree(out.pointer);
 745                 return AE_ERROR;
 746         }
 747
 748         if (ret.eex & 0x1)
 749                 interface->capability |= ACER_CAP_MAILLED;
 750
 751         kfree(out.pointer);
 752
 753         return AE_OK;
 754 }
 755
 756 static int AMW0_set_cap_acpi_check_device_found;
 757
 758 static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
 759         u32 level, void *context, void **retval)
 760 {
 761         AMW0_set_cap_acpi_check_device_found = 1;
 762         return AE_OK;
 763 }
 764
 765 static const struct acpi_device_id norfkill_ids[] = {
 766         { "VPC2004", 0},
 767         { "IBM0068", 0},
 768         { "LEN0068", 0},
 769         { "SNY5001", 0},        /* sony-laptop in charge */
 770         { "", 0},
 771 };
 772
 773 static int AMW0_set_cap_acpi_check_device(void)
 774 {
 775         const struct acpi_device_id *id;
 776
 777         for (id = norfkill_ids; id->id[0]; id++)
 778                 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
 779                                 NULL, NULL);
 780         return AMW0_set_cap_acpi_check_device_found;
 781 }
 782
 783 static acpi_status AMW0_set_capabilities(void)
 784 {
 785         struct wmab_args args;
 786         struct wmab_ret ret;
 787         acpi_status status;
 788         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 789         union acpi_object *obj;
 790
 791         /*
 792          * On laptops with this strange GUID (non Acer), normal probing doesn't
 793          * work.
 794          */
 795         if (wmi_has_guid(AMW0_GUID2)) {
 796                 if ((quirks != &quirk_unknown) ||
 797                     !AMW0_set_cap_acpi_check_device())
 798                         interface->capability |= ACER_CAP_WIRELESS;
 799                 return AE_OK;
 800         }
 801
 802         args.eax = ACER_AMW0_WRITE;
 803         args.ecx = args.edx = 0;
 804
 805         args.ebx = 0xa2 << 8;
 806         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 807
 808         status = wmab_execute(&args, &out);
 809         if (ACPI_FAILURE(status))
 810                 return status;
 811
 812         obj = out.pointer;
 813         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 814         obj->buffer.length == sizeof(struct wmab_ret)) {
 815                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 816         } else {
 817                 status = AE_ERROR;
 818                 goto out;
 819         }
 820
 821         if (ret.eax & 0x1)
 822                 interface->capability |= ACER_CAP_WIRELESS;
 823
 824         args.ebx = 2 << 8;
 825         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 826
 827         /*
 828          * It's ok to use existing buffer for next wmab_execute call.
 829          * But we need to kfree(out.pointer) if next wmab_execute fail.
 830          */
 831         status = wmab_execute(&args, &out);
 832         if (ACPI_FAILURE(status))
 833                 goto out;
 834
 835         obj = (union acpi_object *) out.pointer;
 836         if (obj && obj->type == ACPI_TYPE_BUFFER
 837         && obj->buffer.length == sizeof(struct wmab_ret)) {
 838                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 839         } else {
 840                 status = AE_ERROR;
 841                 goto out;
 842         }
 843
 844         if (ret.eax & 0x1)
 845                 interface->capability |= ACER_CAP_BLUETOOTH;
 846
 847         /*
 848          * This appears to be safe to enable, since all Wistron based laptops
 849          * appear to use the same EC register for brightness, even if they
 850          * differ for wireless, etc
 851          */
 852         if (quirks->brightness >= 0)
 853                 interface->capability |= ACER_CAP_BRIGHTNESS;
 854
 855         status = AE_OK;
 856 out:
 857         kfree(out.pointer);
 858         return status;
 859 }
 860
 861 static struct wmi_interface AMW0_interface = {
 862         .type = ACER_AMW0,
 863 };
 864
 865 static struct wmi_interface AMW0_V2_interface = {
 866         .type = ACER_AMW0_V2,
 867 };
 868
 869 /*
 870  * New interface (The WMID interface)
 871  */
 872 static acpi_status
 873 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 874 {
 875         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 876         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 877         union acpi_object *obj;
 878         u32 tmp = 0;
 879         acpi_status status;
 880
 881         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 882
 883         if (ACPI_FAILURE(status))
 884                 return status;
 885
 886         obj = (union acpi_object *) result.pointer;
 887         if (obj) {
 888                 if (obj->type == ACPI_TYPE_BUFFER &&
 889                         (obj->buffer.length == sizeof(u32) ||
 890                         obj->buffer.length == sizeof(u64))) {
 891                         tmp = *((u32 *) obj->buffer.pointer);
 892                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 893                         tmp = (u32) obj->integer.value;
 894                 }
 895         }
 896
 897         if (out)
 898                 *out = tmp;
 899
 900         kfree(result.pointer);
 901
 902         return status;
 903 }
 904
 905 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 906 {
 907         acpi_status status;
 908         u8 tmp;
 909         u32 result, method_id = 0;
 910
 911         switch (cap) {
 912         case ACER_CAP_WIRELESS:
 913                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 914                 break;
 915         case ACER_CAP_BLUETOOTH:
 916                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 917                 break;
 918         case ACER_CAP_BRIGHTNESS:
 919                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 920                 break;
 921         case ACER_CAP_THREEG:
 922                 method_id = ACER_WMID_GET_THREEG_METHODID;
 923                 break;
 924         case ACER_CAP_MAILLED:
 925                 if (quirks->mailled == 1) {
 926                         ec_read(0x9f, &tmp);
 927                         *value = tmp & 0x1;
 928                         return 0;
 929                 }
 930         default:
 931                 return AE_ERROR;
 932         }
 933         status = WMI_execute_u32(method_id, 0, &result);
 934
 935         if (ACPI_SUCCESS(status))
 936                 *value = (u8)result;
 937
 938         return status;
 939 }
 940
 941 static acpi_status WMID_set_u32(u32 value, u32 cap)
 942 {
 943         u32 method_id = 0;
 944         char param;
 945
 946         switch (cap) {
 947         case ACER_CAP_BRIGHTNESS:
 948                 if (value > max_brightness)
 949                         return AE_BAD_PARAMETER;
 950                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
 951                 break;
 952         case ACER_CAP_WIRELESS:
 953                 if (value > 1)
 954                         return AE_BAD_PARAMETER;
 955                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
 956                 break;
 957         case ACER_CAP_BLUETOOTH:
 958                 if (value > 1)
 959                         return AE_BAD_PARAMETER;
 960                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
 961                 break;
 962         case ACER_CAP_THREEG:
 963                 if (value > 1)
 964                         return AE_BAD_PARAMETER;
 965                 method_id = ACER_WMID_SET_THREEG_METHODID;
 966                 break;
 967         case ACER_CAP_MAILLED:
 968                 if (value > 1)
 969                         return AE_BAD_PARAMETER;
 970                 if (quirks->mailled == 1) {
 971                         param = value ? 0x92 : 0x93;
 972                         i8042_lock_chip();
 973                         i8042_command(&param, 0x1059);
 974                         i8042_unlock_chip();
 975                         return 0;
 976                 }
 977                 break;
 978         default:
 979                 return AE_ERROR;
 980         }
 981         return WMI_execute_u32(method_id, (u32)value, NULL);
 982 }
 983
 984 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
 985 {
 986         struct wmid3_gds_return_value return_value;
 987         acpi_status status;
 988         union acpi_object *obj;
 989         struct wmid3_gds_get_input_param params = {
 990                 .function_num = 0x1,
 991                 .hotkey_number = commun_fn_key_number,
 992                 .devices = device,
 993         };
 994         struct acpi_buffer input = {
 995                 sizeof(struct wmid3_gds_get_input_param),
 996                 &params
 997         };
 998         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
 999
1000         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1001         if (ACPI_FAILURE(status))
1002                 return status;
1003
1004         obj = output.pointer;
1005
1006         if (!obj)
1007                 return AE_ERROR;
1008         else if (obj->type != ACPI_TYPE_BUFFER) {
1009                 kfree(obj);
1010                 return AE_ERROR;
1011         }
1012         if (obj->buffer.length != 8) {
1013                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1014                 kfree(obj);
1015                 return AE_ERROR;
1016         }
1017
1018         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1019         kfree(obj);
1020
1021         if (return_value.error_code || return_value.ec_return_value)
1022                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1023                         device,
1024                         return_value.error_code,
1025                         return_value.ec_return_value);
1026         else
1027                 *value = !!(return_value.devices & device);
1028
1029         return status;
1030 }
1031
1032 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1033 {
1034         u16 device;
1035
1036         switch (cap) {
1037         case ACER_CAP_WIRELESS:
1038                 device = ACER_WMID3_GDS_WIRELESS;
1039                 break;
1040         case ACER_CAP_BLUETOOTH:
1041                 device = ACER_WMID3_GDS_BLUETOOTH;
1042                 break;
1043         case ACER_CAP_THREEG:
1044                 device = ACER_WMID3_GDS_THREEG;
1045                 break;
1046         default:
1047                 return AE_ERROR;
1048         }
1049         return wmid3_get_device_status(value, device);
1050 }
1051
1052 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1053 {
1054         struct wmid3_gds_return_value return_value;
1055         acpi_status status;
1056         union acpi_object *obj;
1057         u16 devices;
1058         struct wmid3_gds_get_input_param get_params = {
1059                 .function_num = 0x1,
1060                 .hotkey_number = commun_fn_key_number,
1061                 .devices = commun_func_bitmap,
1062         };
1063         struct acpi_buffer get_input = {
1064                 sizeof(struct wmid3_gds_get_input_param),
1065                 &get_params
1066         };
1067         struct wmid3_gds_set_input_param set_params = {
1068                 .function_num = 0x2,
1069                 .hotkey_number = commun_fn_key_number,
1070                 .devices = commun_func_bitmap,
1071         };
1072         struct acpi_buffer set_input = {
1073                 sizeof(struct wmid3_gds_set_input_param),
1074                 &set_params
1075         };
1076         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1077         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1078
1079         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1080         if (ACPI_FAILURE(status))
1081                 return status;
1082
1083         obj = output.pointer;
1084
1085         if (!obj)
1086                 return AE_ERROR;
1087         else if (obj->type != ACPI_TYPE_BUFFER) {
1088                 kfree(obj);
1089                 return AE_ERROR;
1090         }
1091         if (obj->buffer.length != 8) {
1092                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1093                 kfree(obj);
1094                 return AE_ERROR;
1095         }
1096
1097         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1098         kfree(obj);
1099
1100         if (return_value.error_code || return_value.ec_return_value) {
1101                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1102                         return_value.error_code,
1103                         return_value.ec_return_value);
1104                 return status;
1105         }
1106
1107         devices = return_value.devices;
1108         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1109
1110         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1111         if (ACPI_FAILURE(status))
1112                 return status;
1113
1114         obj = output2.pointer;
1115
1116         if (!obj)
1117                 return AE_ERROR;
1118         else if (obj->type != ACPI_TYPE_BUFFER) {
1119                 kfree(obj);
1120                 return AE_ERROR;
1121         }
1122         if (obj->buffer.length != 4) {
1123                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1124                 kfree(obj);
1125                 return AE_ERROR;
1126         }
1127
1128         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1129         kfree(obj);
1130
1131         if (return_value.error_code || return_value.ec_return_value)
1132                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1133                         return_value.error_code,
1134                         return_value.ec_return_value);
1135
1136         return status;
1137 }
1138
1139 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1140 {
1141         u16 device;
1142
1143         switch (cap) {
1144         case ACER_CAP_WIRELESS:
1145                 device = ACER_WMID3_GDS_WIRELESS;
1146                 break;
1147         case ACER_CAP_BLUETOOTH:
1148                 device = ACER_WMID3_GDS_BLUETOOTH;
1149                 break;
1150         case ACER_CAP_THREEG:
1151                 device = ACER_WMID3_GDS_THREEG;
1152                 break;
1153         default:
1154                 return AE_ERROR;
1155         }
1156         return wmid3_set_device_status(value, device);
1157 }
1158
1159 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1160 {
1161         struct hotkey_function_type_aa *type_aa;
1162
1163         /* We are looking for OEM-specific Type AAh */
1164         if (header->type != 0xAA)
1165                 return;
1166
1167         has_type_aa = true;
1168         type_aa = (struct hotkey_function_type_aa *) header;
1169
1170         pr_info("Function bitmap for Communication Button: 0x%x\n",
1171                 type_aa->commun_func_bitmap);
1172         commun_func_bitmap = type_aa->commun_func_bitmap;
1173
1174         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1175                 interface->capability |= ACER_CAP_WIRELESS;
1176         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1177                 interface->capability |= ACER_CAP_THREEG;
1178         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1179                 interface->capability |= ACER_CAP_BLUETOOTH;
1180
1181         commun_fn_key_number = type_aa->commun_fn_key_number;
1182 }
1183
1184 static acpi_status WMID_set_capabilities(void)
1185 {
1186         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1187         union acpi_object *obj;
1188         acpi_status status;
1189         u32 devices;
1190
1191         status = wmi_query_block(WMID_GUID2, 1, &out);
1192         if (ACPI_FAILURE(status))
1193                 return status;
1194
1195         obj = (union acpi_object *) out.pointer;
1196         if (obj) {
1197                 if (obj->type == ACPI_TYPE_BUFFER &&
1198                         (obj->buffer.length == sizeof(u32) ||
1199                         obj->buffer.length == sizeof(u64))) {
1200                         devices = *((u32 *) obj->buffer.pointer);
1201                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1202                         devices = (u32) obj->integer.value;
1203                 }
1204         } else {
1205                 kfree(out.pointer);
1206                 return AE_ERROR;
1207         }
1208
1209         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1210         if (devices & 0x07)
1211                 interface->capability |= ACER_CAP_WIRELESS;
1212         if (devices & 0x40)
1213                 interface->capability |= ACER_CAP_THREEG;
1214         if (devices & 0x10)
1215                 interface->capability |= ACER_CAP_BLUETOOTH;
1216
1217         if (!(devices & 0x20))
1218                 max_brightness = 0x9;
1219
1220         kfree(out.pointer);
1221         return status;
1222 }
1223
1224 static struct wmi_interface wmid_interface = {
1225         .type = ACER_WMID,
1226 };
1227
1228 static struct wmi_interface wmid_v2_interface = {
1229         .type = ACER_WMID_v2,
1230 };
1231
1232 /*
1233  * Generic Device (interface-independent)
1234  */
1235
1236 static acpi_status get_u32(u32 *value, u32 cap)
1237 {
1238         acpi_status status = AE_ERROR;
1239
1240         switch (interface->type) {
1241         case ACER_AMW0:
1242                 status = AMW0_get_u32(value, cap);
1243                 break;
1244         case ACER_AMW0_V2:
1245                 if (cap == ACER_CAP_MAILLED) {
1246                         status = AMW0_get_u32(value, cap);
1247                         break;
1248                 }
1249         case ACER_WMID:
1250                 status = WMID_get_u32(value, cap);
1251                 break;
1252         case ACER_WMID_v2:
1253                 if (cap & (ACER_CAP_WIRELESS |
1254                            ACER_CAP_BLUETOOTH |
1255                            ACER_CAP_THREEG))
1256                         status = wmid_v2_get_u32(value, cap);
1257                 else if (wmi_has_guid(WMID_GUID2))
1258                         status = WMID_get_u32(value, cap);
1259                 break;
1260         }
1261
1262         return status;
1263 }
1264
1265 static acpi_status set_u32(u32 value, u32 cap)
1266 {
1267         acpi_status status;
1268
1269         if (interface->capability & cap) {
1270                 switch (interface->type) {
1271                 case ACER_AMW0:
1272                         return AMW0_set_u32(value, cap);
1273                 case ACER_AMW0_V2:
1274                         if (cap == ACER_CAP_MAILLED)
1275                                 return AMW0_set_u32(value, cap);
1276
1277                         /*
1278                          * On some models, some WMID methods don't toggle
1279                          * properly. For those cases, we want to run the AMW0
1280                          * method afterwards to be certain we've really toggled
1281                          * the device state.
1282                          */
1283                         if (cap == ACER_CAP_WIRELESS ||
1284                                 cap == ACER_CAP_BLUETOOTH) {
1285                                 status = WMID_set_u32(value, cap);
1286                                 if (ACPI_FAILURE(status))
1287                                         return status;
1288
1289                                 return AMW0_set_u32(value, cap);
1290                         }
1291                 case ACER_WMID:
1292                         return WMID_set_u32(value, cap);
1293                 case ACER_WMID_v2:
1294                         if (cap & (ACER_CAP_WIRELESS |
1295                                    ACER_CAP_BLUETOOTH |
1296                                    ACER_CAP_THREEG))
1297                                 return wmid_v2_set_u32(value, cap);
1298                         else if (wmi_has_guid(WMID_GUID2))
1299                                 return WMID_set_u32(value, cap);
1300                 default:
1301                         return AE_BAD_PARAMETER;
1302                 }
1303         }
1304         return AE_BAD_PARAMETER;
1305 }
1306
1307 static void __init acer_commandline_init(void)
1308 {
1309         /*
1310          * These will all fail silently if the value given is invalid, or the
1311          * capability isn't available on the given interface
1312          */
1313         if (mailled >= 0)
1314                 set_u32(mailled, ACER_CAP_MAILLED);
1315         if (!has_type_aa && threeg >= 0)
1316                 set_u32(threeg, ACER_CAP_THREEG);
1317         if (brightness >= 0)
1318                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1319 }
1320
1321 /*
1322  * LED device (Mail LED only, no other LEDs known yet)
1323  */
1324 static void mail_led_set(struct led_classdev *led_cdev,
1325 enum led_brightness value)
1326 {
1327         set_u32(value, ACER_CAP_MAILLED);
1328 }
1329
1330 static struct led_classdev mail_led = {
1331         .name = "acer-wmi::mail",
1332         .brightness_set = mail_led_set,
1333 };
1334
1335 static int acer_led_init(struct device *dev)
1336 {
1337         return led_classdev_register(dev, &mail_led);
1338 }
1339
1340 static void acer_led_exit(void)
1341 {
1342         set_u32(LED_OFF, ACER_CAP_MAILLED);
1343         led_classdev_unregister(&mail_led);
1344 }
1345
1346 /*
1347  * Backlight device
1348  */
1349 static struct backlight_device *acer_backlight_device;
1350
1351 static int read_brightness(struct backlight_device *bd)
1352 {
1353         u32 value;
1354         get_u32(&value, ACER_CAP_BRIGHTNESS);
1355         return value;
1356 }
1357
1358 static int update_bl_status(struct backlight_device *bd)
1359 {
1360         int intensity = bd->props.brightness;
1361
1362         if (bd->props.power != FB_BLANK_UNBLANK)
1363                 intensity = 0;
1364         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1365                 intensity = 0;
1366
1367         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1368
1369         return 0;
1370 }
1371
1372 static const struct backlight_ops acer_bl_ops = {
1373         .get_brightness = read_brightness,
1374         .update_status = update_bl_status,
1375 };
1376
1377 static int acer_backlight_init(struct device *dev)
1378 {
1379         struct backlight_properties props;
1380         struct backlight_device *bd;
1381
1382         memset(&props, 0, sizeof(struct backlight_properties));
1383         props.type = BACKLIGHT_PLATFORM;
1384         props.max_brightness = max_brightness;
1385         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1386                                        &props);
1387         if (IS_ERR(bd)) {
1388                 pr_err("Could not register Acer backlight device\n");
1389                 acer_backlight_device = NULL;
1390                 return PTR_ERR(bd);
1391         }
1392
1393         acer_backlight_device = bd;
1394
1395         bd->props.power = FB_BLANK_UNBLANK;
1396         bd->props.brightness = read_brightness(bd);
1397         backlight_update_status(bd);
1398         return 0;
1399 }
1400
1401 static void acer_backlight_exit(void)
1402 {
1403         backlight_device_unregister(acer_backlight_device);
1404 }
1405
1406 /*
1407  * Accelerometer device
1408  */
1409 static acpi_handle gsensor_handle;
1410
1411 static int acer_gsensor_init(void)
1412 {
1413         acpi_status status;
1414         struct acpi_buffer output;
1415         union acpi_object out_obj;
1416
1417         output.length = sizeof(out_obj);
1418         output.pointer = &out_obj;
1419         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1420         if (ACPI_FAILURE(status))
1421                 return -1;
1422
1423         return 0;
1424 }
1425
1426 static int acer_gsensor_open(struct input_dev *input)
1427 {
1428         return acer_gsensor_init();
1429 }
1430
1431 static int acer_gsensor_event(void)
1432 {
1433         acpi_status status;
1434         struct acpi_buffer output;
1435         union acpi_object out_obj[5];
1436
1437         if (!has_cap(ACER_CAP_ACCEL))
1438                 return -1;
1439
1440         output.length = sizeof(out_obj);
1441         output.pointer = out_obj;
1442
1443         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1444         if (ACPI_FAILURE(status))
1445                 return -1;
1446
1447         if (out_obj->package.count != 4)
1448                 return -1;
1449
1450         input_report_abs(acer_wmi_accel_dev, ABS_X,
1451                 (s16)out_obj->package.elements[0].integer.value);
1452         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1453                 (s16)out_obj->package.elements[1].integer.value);
1454         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1455                 (s16)out_obj->package.elements[2].integer.value);
1456         input_sync(acer_wmi_accel_dev);
1457         return 0;
1458 }
1459
1460 /*
1461  * Rfkill devices
1462  */
1463 static void acer_rfkill_update(struct work_struct *ignored);
1464 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1465 static void acer_rfkill_update(struct work_struct *ignored)
1466 {
1467         u32 state;
1468         acpi_status status;
1469
1470         if (has_cap(ACER_CAP_WIRELESS)) {
1471                 status = get_u32(&state, ACER_CAP_WIRELESS);
1472                 if (ACPI_SUCCESS(status)) {
1473                         if (quirks->wireless == 3)
1474                                 rfkill_set_hw_state(wireless_rfkill, !state);
1475                         else
1476                                 rfkill_set_sw_state(wireless_rfkill, !state);
1477                 }
1478         }
1479
1480         if (has_cap(ACER_CAP_BLUETOOTH)) {
1481                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1482                 if (ACPI_SUCCESS(status))
1483                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1484         }
1485
1486         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1487                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1488                 if (ACPI_SUCCESS(status))
1489                         rfkill_set_sw_state(threeg_rfkill, !state);
1490         }
1491
1492         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1493 }
1494
1495 static int acer_rfkill_set(void *data, bool blocked)
1496 {
1497         acpi_status status;
1498         u32 cap = (unsigned long)data;
1499
1500         if (rfkill_inited) {
1501                 status = set_u32(!blocked, cap);
1502                 if (ACPI_FAILURE(status))
1503                         return -ENODEV;
1504         }
1505
1506         return 0;
1507 }
1508
1509 static const struct rfkill_ops acer_rfkill_ops = {
1510         .set_block = acer_rfkill_set,
1511 };
1512
1513 static struct rfkill *acer_rfkill_register(struct device *dev,
1514                                            enum rfkill_type type,
1515                                            char *name, u32 cap)
1516 {
1517         int err;
1518         struct rfkill *rfkill_dev;
1519         u32 state;
1520         acpi_status status;
1521
1522         rfkill_dev = rfkill_alloc(name, dev, type,
1523                                   &acer_rfkill_ops,
1524                                   (void *)(unsigned long)cap);
1525         if (!rfkill_dev)
1526                 return ERR_PTR(-ENOMEM);
1527
1528         status = get_u32(&state, cap);
1529
1530         err = rfkill_register(rfkill_dev);
1531         if (err) {
1532                 rfkill_destroy(rfkill_dev);
1533                 return ERR_PTR(err);
1534         }
1535
1536         if (ACPI_SUCCESS(status))
1537                 rfkill_set_sw_state(rfkill_dev, !state);
1538
1539         return rfkill_dev;
1540 }
1541
1542 static int acer_rfkill_init(struct device *dev)
1543 {
1544         int err;
1545
1546         if (has_cap(ACER_CAP_WIRELESS)) {
1547                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1548                         "acer-wireless", ACER_CAP_WIRELESS);
1549                 if (IS_ERR(wireless_rfkill)) {
1550                         err = PTR_ERR(wireless_rfkill);
1551                         goto error_wireless;
1552                 }
1553         }
1554
1555         if (has_cap(ACER_CAP_BLUETOOTH)) {
1556                 bluetooth_rfkill = acer_rfkill_register(dev,
1557                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1558                         ACER_CAP_BLUETOOTH);
1559                 if (IS_ERR(bluetooth_rfkill)) {
1560                         err = PTR_ERR(bluetooth_rfkill);
1561                         goto error_bluetooth;
1562                 }
1563         }
1564
1565         if (has_cap(ACER_CAP_THREEG)) {
1566                 threeg_rfkill = acer_rfkill_register(dev,
1567                         RFKILL_TYPE_WWAN, "acer-threeg",
1568                         ACER_CAP_THREEG);
1569                 if (IS_ERR(threeg_rfkill)) {
1570                         err = PTR_ERR(threeg_rfkill);
1571                         goto error_threeg;
1572                 }
1573         }
1574
1575         rfkill_inited = true;
1576
1577         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1578             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1579                 schedule_delayed_work(&acer_rfkill_work,
1580                         round_jiffies_relative(HZ));
1581
1582         return 0;
1583
1584 error_threeg:
1585         if (has_cap(ACER_CAP_BLUETOOTH)) {
1586                 rfkill_unregister(bluetooth_rfkill);
1587                 rfkill_destroy(bluetooth_rfkill);
1588         }
1589 error_bluetooth:
1590         if (has_cap(ACER_CAP_WIRELESS)) {
1591                 rfkill_unregister(wireless_rfkill);
1592                 rfkill_destroy(wireless_rfkill);
1593         }
1594 error_wireless:
1595         return err;
1596 }
1597
1598 static void acer_rfkill_exit(void)
1599 {
1600         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1601             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1602                 cancel_delayed_work_sync(&acer_rfkill_work);
1603
1604         if (has_cap(ACER_CAP_WIRELESS)) {
1605                 rfkill_unregister(wireless_rfkill);
1606                 rfkill_destroy(wireless_rfkill);
1607         }
1608
1609         if (has_cap(ACER_CAP_BLUETOOTH)) {
1610                 rfkill_unregister(bluetooth_rfkill);
1611                 rfkill_destroy(bluetooth_rfkill);
1612         }
1613
1614         if (has_cap(ACER_CAP_THREEG)) {
1615                 rfkill_unregister(threeg_rfkill);
1616                 rfkill_destroy(threeg_rfkill);
1617         }
1618         return;
1619 }
1620
1621 /*
1622  * sysfs interface
1623  */
1624 static ssize_t show_bool_threeg(struct device *dev,
1625         struct device_attribute *attr, char *buf)
1626 {
1627         u32 result; \
1628         acpi_status status;
1629
1630         pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1631                 current->comm);
1632         status = get_u32(&result, ACER_CAP_THREEG);
1633         if (ACPI_SUCCESS(status))
1634                 return sprintf(buf, "%u\n", result);
1635         return sprintf(buf, "Read error\n");
1636 }
1637
1638 static ssize_t set_bool_threeg(struct device *dev,
1639         struct device_attribute *attr, const char *buf, size_t count)
1640 {
1641         u32 tmp = simple_strtoul(buf, NULL, 10);
1642         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1643         pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1644                 current->comm);
1645         if (ACPI_FAILURE(status))
1646                 return -EINVAL;
1647         return count;
1648 }
1649 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1650         set_bool_threeg);
1651
1652 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1653         char *buf)
1654 {
1655         pr_info("This interface sysfs will be removed in 2012 - used by: %s\n",
1656                 current->comm);
1657         switch (interface->type) {
1658         case ACER_AMW0:
1659                 return sprintf(buf, "AMW0\n");
1660         case ACER_AMW0_V2:
1661                 return sprintf(buf, "AMW0 v2\n");
1662         case ACER_WMID:
1663                 return sprintf(buf, "WMID\n");
1664         case ACER_WMID_v2:
1665                 return sprintf(buf, "WMID v2\n");
1666         default:
1667                 return sprintf(buf, "Error!\n");
1668         }
1669 }
1670
1671 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1672
1673 static void acer_wmi_notify(u32 value, void *context)
1674 {
1675         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1676         union acpi_object *obj;
1677         struct event_return_value return_value;
1678         acpi_status status;
1679         u16 device_state;
1680         const struct key_entry *key;
1681
1682         status = wmi_get_event_data(value, &response);
1683         if (status != AE_OK) {
1684                 pr_warn("bad event status 0x%x\n", status);
1685                 return;
1686         }
1687
1688         obj = (union acpi_object *)response.pointer;
1689
1690         if (!obj)
1691                 return;
1692         if (obj->type != ACPI_TYPE_BUFFER) {
1693                 pr_warn("Unknown response received %d\n", obj->type);
1694                 kfree(obj);
1695                 return;
1696         }
1697         if (obj->buffer.length != 8) {
1698                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1699                 kfree(obj);
1700                 return;
1701         }
1702
1703         return_value = *((struct event_return_value *)obj->buffer.pointer);
1704         kfree(obj);
1705
1706         switch (return_value.function) {
1707         case WMID_HOTKEY_EVENT:
1708                 device_state = return_value.device_state;
1709                 pr_debug("device state: 0x%x\n", device_state);
1710
1711                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1712                                                         return_value.key_num);
1713                 if (!key) {
1714                         pr_warn("Unknown key number - 0x%x\n",
1715                                 return_value.key_num);
1716                 } else {
1717                         switch (key->keycode) {
1718                         case KEY_WLAN:
1719                         case KEY_BLUETOOTH:
1720                                 if (has_cap(ACER_CAP_WIRELESS))
1721                                         rfkill_set_sw_state(wireless_rfkill,
1722                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1723                                 if (has_cap(ACER_CAP_THREEG))
1724                                         rfkill_set_sw_state(threeg_rfkill,
1725                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1726                                 if (has_cap(ACER_CAP_BLUETOOTH))
1727                                         rfkill_set_sw_state(bluetooth_rfkill,
1728                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1729                                 break;
1730                         }
1731                         sparse_keymap_report_entry(acer_wmi_input_dev, key,
1732                                                    1, true);
1733                 }
1734                 break;
1735         case WMID_ACCEL_EVENT:
1736                 acer_gsensor_event();
1737                 break;
1738         default:
1739                 pr_warn("Unknown function number - %d - %d\n",
1740                         return_value.function, return_value.key_num);
1741                 break;
1742         }
1743 }
1744
1745 static acpi_status
1746 wmid3_set_lm_mode(struct lm_input_params *params,
1747                   struct lm_return_value *return_value)
1748 {
1749         acpi_status status;
1750         union acpi_object *obj;
1751
1752         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1753         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1754
1755         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1756         if (ACPI_FAILURE(status))
1757                 return status;
1758
1759         obj = output.pointer;
1760
1761         if (!obj)
1762                 return AE_ERROR;
1763         else if (obj->type != ACPI_TYPE_BUFFER) {
1764                 kfree(obj);
1765                 return AE_ERROR;
1766         }
1767         if (obj->buffer.length != 4) {
1768                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1769                 kfree(obj);
1770                 return AE_ERROR;
1771         }
1772
1773         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1774         kfree(obj);
1775
1776         return status;
1777 }
1778
1779 static int acer_wmi_enable_ec_raw(void)
1780 {
1781         struct lm_return_value return_value;
1782         acpi_status status;
1783         struct lm_input_params params = {
1784                 .function_num = 0x1,
1785                 .commun_devices = 0xFFFF,
1786                 .devices = 0xFFFF,
1787                 .lm_status = 0x00,            /* Launch Manager Deactive */
1788         };
1789
1790         status = wmid3_set_lm_mode(&params, &return_value);
1791
1792         if (return_value.error_code || return_value.ec_return_value)
1793                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1794                         return_value.error_code,
1795                         return_value.ec_return_value);
1796         else
1797                 pr_info("Enabled EC raw mode\n");
1798
1799         return status;
1800 }
1801
1802 static int acer_wmi_enable_lm(void)
1803 {
1804         struct lm_return_value return_value;
1805         acpi_status status;
1806         struct lm_input_params params = {
1807                 .function_num = 0x1,
1808                 .commun_devices = 0xFFFF,
1809                 .devices = 0xFFFF,
1810                 .lm_status = 0x01,            /* Launch Manager Active */
1811         };
1812
1813         status = wmid3_set_lm_mode(&params, &return_value);
1814
1815         if (return_value.error_code || return_value.ec_return_value)
1816                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1817                         return_value.error_code,
1818                         return_value.ec_return_value);
1819
1820         return status;
1821 }
1822
1823 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1824                                                 void *ctx, void **retval)
1825 {
1826         *(acpi_handle *)retval = ah;
1827         return AE_OK;
1828 }
1829
1830 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1831                                         acpi_handle *ah)
1832 {
1833         acpi_status status;
1834         acpi_handle handle;
1835
1836         BUG_ON(!name || !ah);
1837
1838         handle = NULL;
1839         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1840                                         (void *)name, &handle);
1841
1842         if (ACPI_SUCCESS(status)) {
1843                 *ah = handle;
1844                 return 0;
1845         } else {
1846                 return -ENODEV;
1847         }
1848 }
1849
1850 static int __init acer_wmi_accel_setup(void)
1851 {
1852         int err;
1853
1854         err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1855         if (err)
1856                 return err;
1857
1858         interface->capability |= ACER_CAP_ACCEL;
1859
1860         acer_wmi_accel_dev = input_allocate_device();
1861         if (!acer_wmi_accel_dev)
1862                 return -ENOMEM;
1863
1864         acer_wmi_accel_dev->open = acer_gsensor_open;
1865
1866         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1867         acer_wmi_accel_dev->phys = "wmi/input1";
1868         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1869         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1870         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1871         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1872         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1873
1874         err = input_register_device(acer_wmi_accel_dev);
1875         if (err)
1876                 goto err_free_dev;
1877
1878         return 0;
1879
1880 err_free_dev:
1881         input_free_device(acer_wmi_accel_dev);
1882         return err;
1883 }
1884
1885 static void acer_wmi_accel_destroy(void)
1886 {
1887         input_unregister_device(acer_wmi_accel_dev);
1888 }
1889
1890 static int __init acer_wmi_input_setup(void)
1891 {
1892         acpi_status status;
1893         int err;
1894
1895         acer_wmi_input_dev = input_allocate_device();
1896         if (!acer_wmi_input_dev)
1897                 return -ENOMEM;
1898
1899         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1900         acer_wmi_input_dev->phys = "wmi/input0";
1901         acer_wmi_input_dev->id.bustype = BUS_HOST;
1902
1903         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1904         if (err)
1905                 goto err_free_dev;
1906
1907         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1908                                                 acer_wmi_notify, NULL);
1909         if (ACPI_FAILURE(status)) {
1910                 err = -EIO;
1911                 goto err_free_keymap;
1912         }
1913
1914         err = input_register_device(acer_wmi_input_dev);
1915         if (err)
1916                 goto err_uninstall_notifier;
1917
1918         return 0;
1919
1920 err_uninstall_notifier:
1921         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1922 err_free_keymap:
1923         sparse_keymap_free(acer_wmi_input_dev);
1924 err_free_dev:
1925         input_free_device(acer_wmi_input_dev);
1926         return err;
1927 }
1928
1929 static void acer_wmi_input_destroy(void)
1930 {
1931         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1932         sparse_keymap_free(acer_wmi_input_dev);
1933         input_unregister_device(acer_wmi_input_dev);
1934 }
1935
1936 /*
1937  * debugfs functions
1938  */
1939 static u32 get_wmid_devices(void)
1940 {
1941         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1942         union acpi_object *obj;
1943         acpi_status status;
1944         u32 devices = 0;
1945
1946         status = wmi_query_block(WMID_GUID2, 1, &out);
1947         if (ACPI_FAILURE(status))
1948                 return 0;
1949
1950         obj = (union acpi_object *) out.pointer;
1951         if (obj) {
1952                 if (obj->type == ACPI_TYPE_BUFFER &&
1953                         (obj->buffer.length == sizeof(u32) ||
1954                         obj->buffer.length == sizeof(u64))) {
1955                         devices = *((u32 *) obj->buffer.pointer);
1956                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1957                         devices = (u32) obj->integer.value;
1958                 }
1959         }
1960
1961         kfree(out.pointer);
1962         return devices;
1963 }
1964
1965 /*
1966  * Platform device
1967  */
1968 static int acer_platform_probe(struct platform_device *device)
1969 {
1970         int err;
1971
1972         if (has_cap(ACER_CAP_MAILLED)) {
1973                 err = acer_led_init(&device->dev);
1974                 if (err)
1975                         goto error_mailled;
1976         }
1977
1978         if (has_cap(ACER_CAP_BRIGHTNESS)) {
1979                 err = acer_backlight_init(&device->dev);
1980                 if (err)
1981                         goto error_brightness;
1982         }
1983
1984         err = acer_rfkill_init(&device->dev);
1985         if (err)
1986                 goto error_rfkill;
1987
1988         return err;
1989
1990 error_rfkill:
1991         if (has_cap(ACER_CAP_BRIGHTNESS))
1992                 acer_backlight_exit();
1993 error_brightness:
1994         if (has_cap(ACER_CAP_MAILLED))
1995                 acer_led_exit();
1996 error_mailled:
1997         return err;
1998 }
1999
2000 static int acer_platform_remove(struct platform_device *device)
2001 {
2002         if (has_cap(ACER_CAP_MAILLED))
2003                 acer_led_exit();
2004         if (has_cap(ACER_CAP_BRIGHTNESS))
2005                 acer_backlight_exit();
2006
2007         acer_rfkill_exit();
2008         return 0;
2009 }
2010
2011 static int acer_suspend(struct device *dev)
2012 {
2013         u32 value;
2014         struct acer_data *data = &interface->data;
2015
2016         if (!data)
2017                 return -ENOMEM;
2018
2019         if (has_cap(ACER_CAP_MAILLED)) {
2020                 get_u32(&value, ACER_CAP_MAILLED);
2021                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2022                 data->mailled = value;
2023         }
2024
2025         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2026                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2027                 data->brightness = value;
2028         }
2029
2030         return 0;
2031 }
2032
2033 static int acer_resume(struct device *dev)
2034 {
2035         struct acer_data *data = &interface->data;
2036
2037         if (!data)
2038                 return -ENOMEM;
2039
2040         if (has_cap(ACER_CAP_MAILLED))
2041                 set_u32(data->mailled, ACER_CAP_MAILLED);
2042
2043         if (has_cap(ACER_CAP_BRIGHTNESS))
2044                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2045
2046         if (has_cap(ACER_CAP_ACCEL))
2047                 acer_gsensor_init();
2048
2049         return 0;
2050 }
2051
2052 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2053
2054 static void acer_platform_shutdown(struct platform_device *device)
2055 {
2056         struct acer_data *data = &interface->data;
2057
2058         if (!data)
2059                 return;
2060
2061         if (has_cap(ACER_CAP_MAILLED))
2062                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2063 }
2064
2065 static struct platform_driver acer_platform_driver = {
2066         .driver = {
2067                 .name = "acer-wmi",
2068                 .owner = THIS_MODULE,
2069                 .pm = &acer_pm,
2070         },
2071         .probe = acer_platform_probe,
2072         .remove = acer_platform_remove,
2073         .shutdown = acer_platform_shutdown,
2074 };
2075
2076 static struct platform_device *acer_platform_device;
2077
2078 static int remove_sysfs(struct platform_device *device)
2079 {
2080         if (has_cap(ACER_CAP_THREEG))
2081                 device_remove_file(&device->dev, &dev_attr_threeg);
2082
2083         device_remove_file(&device->dev, &dev_attr_interface);
2084
2085         return 0;
2086 }
2087
2088 static int create_sysfs(void)
2089 {
2090         int retval = -ENOMEM;
2091
2092         if (has_cap(ACER_CAP_THREEG)) {
2093                 retval = device_create_file(&acer_platform_device->dev,
2094                         &dev_attr_threeg);
2095                 if (retval)
2096                         goto error_sysfs;
2097         }
2098
2099         retval = device_create_file(&acer_platform_device->dev,
2100                 &dev_attr_interface);
2101         if (retval)
2102                 goto error_sysfs;
2103
2104         return 0;
2105
2106 error_sysfs:
2107                 remove_sysfs(acer_platform_device);
2108         return retval;
2109 }
2110
2111 static void remove_debugfs(void)
2112 {
2113         debugfs_remove(interface->debug.devices);
2114         debugfs_remove(interface->debug.root);
2115 }
2116
2117 static int create_debugfs(void)
2118 {
2119         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2120         if (!interface->debug.root) {
2121                 pr_err("Failed to create debugfs directory");
2122                 return -ENOMEM;
2123         }
2124
2125         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2126                                         interface->debug.root,
2127                                         &interface->debug.wmid_devices);
2128         if (!interface->debug.devices)
2129                 goto error_debugfs;
2130
2131         return 0;
2132
2133 error_debugfs:
2134         remove_debugfs();
2135         return -ENOMEM;
2136 }
2137
2138 static int __init acer_wmi_init(void)
2139 {
2140         int err;
2141
2142         pr_info("Acer Laptop ACPI-WMI Extras\n");
2143
2144         if (dmi_check_system(acer_blacklist)) {
2145                 pr_info("Blacklisted hardware detected - not loading\n");
2146                 return -ENODEV;
2147         }
2148
2149         find_quirks();
2150
2151         /*
2152          * Detect which ACPI-WMI interface we're using.
2153          */
2154         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2155                 interface = &AMW0_V2_interface;
2156
2157         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2158                 interface = &wmid_interface;
2159
2160         if (wmi_has_guid(WMID_GUID3))
2161                 interface = &wmid_v2_interface;
2162
2163         if (interface)
2164                 dmi_walk(type_aa_dmi_decode, NULL);
2165
2166         if (wmi_has_guid(WMID_GUID2) && interface) {
2167                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2168                         pr_err("Unable to detect available WMID devices\n");
2169                         return -ENODEV;
2170                 }
2171                 /* WMID always provides brightness methods */
2172                 interface->capability |= ACER_CAP_BRIGHTNESS;
2173         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2174                 pr_err("No WMID device detection method found\n");
2175                 return -ENODEV;
2176         }
2177
2178         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2179                 interface = &AMW0_interface;
2180
2181                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2182                         pr_err("Unable to detect available AMW0 devices\n");
2183                         return -ENODEV;
2184                 }
2185         }
2186
2187         if (wmi_has_guid(AMW0_GUID1))
2188                 AMW0_find_mailled();
2189
2190         if (!interface) {
2191                 pr_err("No or unsupported WMI interface, unable to load\n");
2192                 return -ENODEV;
2193         }
2194
2195         set_quirks();
2196
2197         if (dmi_check_system(video_vendor_dmi_table))
2198                 acpi_video_dmi_promote_vendor();
2199         if (acpi_video_backlight_support()) {
2200                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2201                 pr_info("Brightness must be controlled by acpi video driver\n");
2202         } else {
2203                 pr_info("Disabling ACPI video driver\n");
2204                 acpi_video_unregister();
2205         }
2206
2207         if (wmi_has_guid(WMID_GUID3)) {
2208                 if (ec_raw_mode) {
2209                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2210                                 pr_err("Cannot enable EC raw mode\n");
2211                                 return -ENODEV;
2212                         }
2213                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2214                         pr_err("Cannot enable Launch Manager mode\n");
2215                         return -ENODEV;
2216                 }
2217         } else if (ec_raw_mode) {
2218                 pr_info("No WMID EC raw mode enable method\n");
2219         }
2220
2221         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2222                 err = acer_wmi_input_setup();
2223                 if (err)
2224                         return err;
2225         }
2226
2227         acer_wmi_accel_setup();
2228
2229         err = platform_driver_register(&acer_platform_driver);
2230         if (err) {
2231                 pr_err("Unable to register platform driver\n");
2232                 goto error_platform_register;
2233         }
2234
2235         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2236         if (!acer_platform_device) {
2237                 err = -ENOMEM;
2238                 goto error_device_alloc;
2239         }
2240
2241         err = platform_device_add(acer_platform_device);
2242         if (err)
2243                 goto error_device_add;
2244
2245         err = create_sysfs();
2246         if (err)
2247                 goto error_create_sys;
2248
2249         if (wmi_has_guid(WMID_GUID2)) {
2250                 interface->debug.wmid_devices = get_wmid_devices();
2251                 err = create_debugfs();
2252                 if (err)
2253                         goto error_create_debugfs;
2254         }
2255
2256         /* Override any initial settings with values from the commandline */
2257         acer_commandline_init();
2258
2259         return 0;
2260
2261 error_create_debugfs:
2262         remove_sysfs(acer_platform_device);
2263 error_create_sys:
2264         platform_device_del(acer_platform_device);
2265 error_device_add:
2266         platform_device_put(acer_platform_device);
2267 error_device_alloc:
2268         platform_driver_unregister(&acer_platform_driver);
2269 error_platform_register:
2270         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2271                 acer_wmi_input_destroy();
2272         if (has_cap(ACER_CAP_ACCEL))
2273                 acer_wmi_accel_destroy();
2274
2275         return err;
2276 }
2277
2278 static void __exit acer_wmi_exit(void)
2279 {
2280         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2281                 acer_wmi_input_destroy();
2282
2283         if (has_cap(ACER_CAP_ACCEL))
2284                 acer_wmi_accel_destroy();
2285
2286         remove_sysfs(acer_platform_device);
2287         remove_debugfs();
2288         platform_device_unregister(acer_platform_device);
2289         platform_driver_unregister(&acer_platform_driver);
2290
2291         pr_info("Acer Laptop WMI Extras unloaded\n");
2292         return;
2293 }
2294
2295 module_init(acer_wmi_init);
2296 module_exit(acer_wmi_exit);