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