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
  47 MODULE_AUTHOR("Carlos Corbacho");
  48 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
  49 MODULE_LICENSE("GPL");
  50
  51 /*
  52  * Magic Number
  53  * Meaning is unknown - this number is required for writing to ACPI for AMW0
  54  * (it's also used in acerhk when directly accessing the BIOS)
  55  */
  56 #define ACER_AMW0_WRITE 0x9610
  57
  58 /*
  59  * Bit masks for the AMW0 interface
  60  */
  61 #define ACER_AMW0_WIRELESS_MASK  0x35
  62 #define ACER_AMW0_BLUETOOTH_MASK 0x34
  63 #define ACER_AMW0_MAILLED_MASK   0x31
  64
  65 /*
  66  * Method IDs for WMID interface
  67  */
  68 #define ACER_WMID_GET_WIRELESS_METHODID         1
  69 #define ACER_WMID_GET_BLUETOOTH_METHODID        2
  70 #define ACER_WMID_GET_BRIGHTNESS_METHODID       3
  71 #define ACER_WMID_SET_WIRELESS_METHODID         4
  72 #define ACER_WMID_SET_BLUETOOTH_METHODID        5
  73 #define ACER_WMID_SET_BRIGHTNESS_METHODID       6
  74 #define ACER_WMID_GET_THREEG_METHODID           10
  75 #define ACER_WMID_SET_THREEG_METHODID           11
  76
  77 /*
  78  * Acer ACPI method GUIDs
  79  */
  80 #define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
  81 #define AMW0_GUID2              "431F16ED-0C2B-444C-B267-27DEB140CF9C"
  82 #define WMID_GUID1              "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
  83 #define WMID_GUID2              "95764E09-FB56-4E83-B31A-37761F60994A"
  84 #define WMID_GUID3              "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
  85
  86 /*
  87  * Acer ACPI event GUIDs
  88  */
  89 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
  90
  91 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
  92 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
  93 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
  94
  95 enum acer_wmi_event_ids {
  96         WMID_HOTKEY_EVENT = 0x1,
  97 };
  98
  99 static const struct key_entry acer_wmi_keymap[] = {
 100         {KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
 101         {KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
 102         {KE_KEY, 0x12, {KEY_BLUETOOTH} },       /* BT */
 103         {KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
 104         {KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
 105         {KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
 106         {KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
 107         {KE_IGNORE, 0x41, {KEY_MUTE} },
 108         {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
 109         {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
 110         {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
 111         {KE_IGNORE, 0x45, {KEY_STOP} },
 112         {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
 113         {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
 114         {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
 115         {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 116         {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 117         {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
 118         {KE_IGNORE, 0x81, {KEY_SLEEP} },
 119         {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
 120         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 121         {KE_END, 0}
 122 };
 123
 124 static struct input_dev *acer_wmi_input_dev;
 125
 126 struct event_return_value {
 127         u8 function;
 128         u8 key_num;
 129         u16 device_state;
 130         u32 reserved;
 131 } __attribute__((packed));
 132
 133 /*
 134  * GUID3 Get Device Status device flags
 135  */
 136 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 137 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 138 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 139 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 140
 141 struct lm_input_params {
 142         u8 function_num;        /* Function Number */
 143         u16 commun_devices;     /* Communication type devices default status */
 144         u16 devices;            /* Other type devices default status */
 145         u8 lm_status;           /* Launch Manager Status */
 146         u16 reserved;
 147 } __attribute__((packed));
 148
 149 struct lm_return_value {
 150         u8 error_code;          /* Error Code */
 151         u8 ec_return_value;     /* EC Return Value */
 152         u16 reserved;
 153 } __attribute__((packed));
 154
 155 struct wmid3_gds_input_param {  /* Get Device Status input parameter */
 156         u8 function_num;        /* Function Number */
 157         u8 hotkey_number;       /* Hotkey Number */
 158         u16 devices;            /* Get Device */
 159 } __attribute__((packed));
 160
 161 struct wmid3_gds_return_value { /* Get Device Status return value*/
 162         u8 error_code;          /* Error Code */
 163         u8 ec_return_value;     /* EC Return Value */
 164         u16 devices;            /* Current Device Status */
 165         u32 reserved;
 166 } __attribute__((packed));
 167
 168 struct hotkey_function_type_aa {
 169         u8 type;
 170         u8 length;
 171         u16 handle;
 172         u16 commun_func_bitmap;
 173 } __attribute__((packed));
 174
 175 /*
 176  * Interface capability flags
 177  */
 178 #define ACER_CAP_MAILLED                (1<<0)
 179 #define ACER_CAP_WIRELESS               (1<<1)
 180 #define ACER_CAP_BLUETOOTH              (1<<2)
 181 #define ACER_CAP_BRIGHTNESS             (1<<3)
 182 #define ACER_CAP_THREEG                 (1<<4)
 183 #define ACER_CAP_ANY                    (0xFFFFFFFF)
 184
 185 /*
 186  * Interface type flags
 187  */
 188 enum interface_flags {
 189         ACER_AMW0,
 190         ACER_AMW0_V2,
 191         ACER_WMID,
 192 };
 193
 194 #define ACER_DEFAULT_WIRELESS  0
 195 #define ACER_DEFAULT_BLUETOOTH 0
 196 #define ACER_DEFAULT_MAILLED   0
 197 #define ACER_DEFAULT_THREEG    0
 198
 199 static int max_brightness = 0xF;
 200
 201 static int mailled = -1;
 202 static int brightness = -1;
 203 static int threeg = -1;
 204 static int force_series;
 205 static bool ec_raw_mode;
 206 static bool has_type_aa;
 207
 208 module_param(mailled, int, 0444);
 209 module_param(brightness, int, 0444);
 210 module_param(threeg, int, 0444);
 211 module_param(force_series, int, 0444);
 212 module_param(ec_raw_mode, bool, 0444);
 213 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 214 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 215 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 216 MODULE_PARM_DESC(force_series, "Force a different laptop series");
 217 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 218
 219 struct acer_data {
 220         int mailled;
 221         int threeg;
 222         int brightness;
 223 };
 224
 225 struct acer_debug {
 226         struct dentry *root;
 227         struct dentry *devices;
 228         u32 wmid_devices;
 229 };
 230
 231 static struct rfkill *wireless_rfkill;
 232 static struct rfkill *bluetooth_rfkill;
 233 static struct rfkill *threeg_rfkill;
 234 static bool rfkill_inited;
 235
 236 /* Each low-level interface must define at least some of the following */
 237 struct wmi_interface {
 238         /* The WMI device type */
 239         u32 type;
 240
 241         /* The capabilities this interface provides */
 242         u32 capability;
 243
 244         /* Private data for the current interface */
 245         struct acer_data data;
 246
 247         /* debugfs entries associated with this interface */
 248         struct acer_debug debug;
 249 };
 250
 251 /* The static interface pointer, points to the currently detected interface */
 252 static struct wmi_interface *interface;
 253
 254 /*
 255  * Embedded Controller quirks
 256  * Some laptops require us to directly access the EC to either enable or query
 257  * features that are not available through WMI.
 258  */
 259
 260 struct quirk_entry {
 261         u8 wireless;
 262         u8 mailled;
 263         s8 brightness;
 264         u8 bluetooth;
 265 };
 266
 267 static struct quirk_entry *quirks;
 268
 269 static void set_quirks(void)
 270 {
 271         if (!interface)
 272                 return;
 273
 274         if (quirks->mailled)
 275                 interface->capability |= ACER_CAP_MAILLED;
 276
 277         if (quirks->brightness)
 278                 interface->capability |= ACER_CAP_BRIGHTNESS;
 279 }
 280
 281 static int dmi_matched(const struct dmi_system_id *dmi)
 282 {
 283         quirks = dmi->driver_data;
 284         return 1;
 285 }
 286
 287 static struct quirk_entry quirk_unknown = {
 288 };
 289
 290 static struct quirk_entry quirk_acer_aspire_1520 = {
 291         .brightness = -1,
 292 };
 293
 294 static struct quirk_entry quirk_acer_travelmate_2490 = {
 295         .mailled = 1,
 296 };
 297
 298 /* This AMW0 laptop has no bluetooth */
 299 static struct quirk_entry quirk_medion_md_98300 = {
 300         .wireless = 1,
 301 };
 302
 303 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 304         .wireless = 2,
 305 };
 306
 307 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 308         .wireless = 3,
 309 };
 310
 311 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
 312 static struct dmi_system_id __devinitdata acer_blacklist[] = {
 313         {
 314                 .ident = "Acer Aspire One (SSD)",
 315                 .matches = {
 316                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 317                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 318                 },
 319         },
 320         {
 321                 .ident = "Acer Aspire One (HDD)",
 322                 .matches = {
 323                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 324                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 325                 },
 326         },
 327         {}
 328 };
 329
 330 static struct dmi_system_id acer_quirks[] = {
 331         {
 332                 .callback = dmi_matched,
 333                 .ident = "Acer Aspire 1360",
 334                 .matches = {
 335                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 336                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 337                 },
 338                 .driver_data = &quirk_acer_aspire_1520,
 339         },
 340         {
 341                 .callback = dmi_matched,
 342                 .ident = "Acer Aspire 1520",
 343                 .matches = {
 344                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 345                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 346                 },
 347                 .driver_data = &quirk_acer_aspire_1520,
 348         },
 349         {
 350                 .callback = dmi_matched,
 351                 .ident = "Acer Aspire 3100",
 352                 .matches = {
 353                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 354                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 355                 },
 356                 .driver_data = &quirk_acer_travelmate_2490,
 357         },
 358         {
 359                 .callback = dmi_matched,
 360                 .ident = "Acer Aspire 3610",
 361                 .matches = {
 362                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 363                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 364                 },
 365                 .driver_data = &quirk_acer_travelmate_2490,
 366         },
 367         {
 368                 .callback = dmi_matched,
 369                 .ident = "Acer Aspire 5100",
 370                 .matches = {
 371                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 372                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 373                 },
 374                 .driver_data = &quirk_acer_travelmate_2490,
 375         },
 376         {
 377                 .callback = dmi_matched,
 378                 .ident = "Acer Aspire 5610",
 379                 .matches = {
 380                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 381                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 382                 },
 383                 .driver_data = &quirk_acer_travelmate_2490,
 384         },
 385         {
 386                 .callback = dmi_matched,
 387                 .ident = "Acer Aspire 5630",
 388                 .matches = {
 389                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 390                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 391                 },
 392                 .driver_data = &quirk_acer_travelmate_2490,
 393         },
 394         {
 395                 .callback = dmi_matched,
 396                 .ident = "Acer Aspire 5650",
 397                 .matches = {
 398                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 399                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 400                 },
 401                 .driver_data = &quirk_acer_travelmate_2490,
 402         },
 403         {
 404                 .callback = dmi_matched,
 405                 .ident = "Acer Aspire 5680",
 406                 .matches = {
 407                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 408                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 409                 },
 410                 .driver_data = &quirk_acer_travelmate_2490,
 411         },
 412         {
 413                 .callback = dmi_matched,
 414                 .ident = "Acer Aspire 9110",
 415                 .matches = {
 416                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 417                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 418                 },
 419                 .driver_data = &quirk_acer_travelmate_2490,
 420         },
 421         {
 422                 .callback = dmi_matched,
 423                 .ident = "Acer TravelMate 2490",
 424                 .matches = {
 425                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 426                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 427                 },
 428                 .driver_data = &quirk_acer_travelmate_2490,
 429         },
 430         {
 431                 .callback = dmi_matched,
 432                 .ident = "Acer TravelMate 4200",
 433                 .matches = {
 434                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 435                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 436                 },
 437                 .driver_data = &quirk_acer_travelmate_2490,
 438         },
 439         {
 440                 .callback = dmi_matched,
 441                 .ident = "Fujitsu Siemens Amilo Li 1718",
 442                 .matches = {
 443                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 444                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 445                 },
 446                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 447         },
 448         {
 449                 .callback = dmi_matched,
 450                 .ident = "Medion MD 98300",
 451                 .matches = {
 452                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 453                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 454                 },
 455                 .driver_data = &quirk_medion_md_98300,
 456         },
 457         {
 458                 .callback = dmi_matched,
 459                 .ident = "Lenovo Ideapad S205",
 460                 .matches = {
 461                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 462                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 463                 },
 464                 .driver_data = &quirk_lenovo_ideapad_s205,
 465         },
 466         {}
 467 };
 468
 469 /* Find which quirks are needed for a particular vendor/ model pair */
 470 static void find_quirks(void)
 471 {
 472         if (!force_series) {
 473                 dmi_check_system(acer_quirks);
 474         } else if (force_series == 2490) {
 475                 quirks = &quirk_acer_travelmate_2490;
 476         }
 477
 478         if (quirks == NULL)
 479                 quirks = &quirk_unknown;
 480
 481         set_quirks();
 482 }
 483
 484 /*
 485  * General interface convenience methods
 486  */
 487
 488 static bool has_cap(u32 cap)
 489 {
 490         if ((interface->capability & cap) != 0)
 491                 return 1;
 492
 493         return 0;
 494 }
 495
 496 /*
 497  * AMW0 (V1) interface
 498  */
 499 struct wmab_args {
 500         u32 eax;
 501         u32 ebx;
 502         u32 ecx;
 503         u32 edx;
 504 };
 505
 506 struct wmab_ret {
 507         u32 eax;
 508         u32 ebx;
 509         u32 ecx;
 510         u32 edx;
 511         u32 eex;
 512 };
 513
 514 static acpi_status wmab_execute(struct wmab_args *regbuf,
 515 struct acpi_buffer *result)
 516 {
 517         struct acpi_buffer input;
 518         acpi_status status;
 519         input.length = sizeof(struct wmab_args);
 520         input.pointer = (u8 *)regbuf;
 521
 522         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
 523
 524         return status;
 525 }
 526
 527 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
 528 struct wmi_interface *iface)
 529 {
 530         int err;
 531         u8 result;
 532
 533         switch (cap) {
 534         case ACER_CAP_MAILLED:
 535                 switch (quirks->mailled) {
 536                 default:
 537                         err = ec_read(0xA, &result);
 538                         if (err)
 539                                 return AE_ERROR;
 540                         *value = (result >> 7) & 0x1;
 541                         return AE_OK;
 542                 }
 543                 break;
 544         case ACER_CAP_WIRELESS:
 545                 switch (quirks->wireless) {
 546                 case 1:
 547                         err = ec_read(0x7B, &result);
 548                         if (err)
 549                                 return AE_ERROR;
 550                         *value = result & 0x1;
 551                         return AE_OK;
 552                 case 2:
 553                         err = ec_read(0x71, &result);
 554                         if (err)
 555                                 return AE_ERROR;
 556                         *value = result & 0x1;
 557                         return AE_OK;
 558                 case 3:
 559                         err = ec_read(0x78, &result);
 560                         if (err)
 561                                 return AE_ERROR;
 562                         *value = result & 0x1;
 563                         return AE_OK;
 564                 default:
 565                         err = ec_read(0xA, &result);
 566                         if (err)
 567                                 return AE_ERROR;
 568                         *value = (result >> 2) & 0x1;
 569                         return AE_OK;
 570                 }
 571                 break;
 572         case ACER_CAP_BLUETOOTH:
 573                 switch (quirks->bluetooth) {
 574                 default:
 575                         err = ec_read(0xA, &result);
 576                         if (err)
 577                                 return AE_ERROR;
 578                         *value = (result >> 4) & 0x1;
 579                         return AE_OK;
 580                 }
 581                 break;
 582         case ACER_CAP_BRIGHTNESS:
 583                 switch (quirks->brightness) {
 584                 default:
 585                         err = ec_read(0x83, &result);
 586                         if (err)
 587                                 return AE_ERROR;
 588                         *value = result;
 589                         return AE_OK;
 590                 }
 591                 break;
 592         default:
 593                 return AE_ERROR;
 594         }
 595         return AE_OK;
 596 }
 597
 598 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
 599 {
 600         struct wmab_args args;
 601
 602         args.eax = ACER_AMW0_WRITE;
 603         args.ebx = value ? (1<<8) : 0;
 604         args.ecx = args.edx = 0;
 605
 606         switch (cap) {
 607         case ACER_CAP_MAILLED:
 608                 if (value > 1)
 609                         return AE_BAD_PARAMETER;
 610                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 611                 break;
 612         case ACER_CAP_WIRELESS:
 613                 if (value > 1)
 614                         return AE_BAD_PARAMETER;
 615                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 616                 break;
 617         case ACER_CAP_BLUETOOTH:
 618                 if (value > 1)
 619                         return AE_BAD_PARAMETER;
 620                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 621                 break;
 622         case ACER_CAP_BRIGHTNESS:
 623                 if (value > max_brightness)
 624                         return AE_BAD_PARAMETER;
 625                 switch (quirks->brightness) {
 626                 default:
 627                         return ec_write(0x83, value);
 628                         break;
 629                 }
 630         default:
 631                 return AE_ERROR;
 632         }
 633
 634         /* Actually do the set */
 635         return wmab_execute(&args, NULL);
 636 }
 637
 638 static acpi_status AMW0_find_mailled(void)
 639 {
 640         struct wmab_args args;
 641         struct wmab_ret ret;
 642         acpi_status status = AE_OK;
 643         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 644         union acpi_object *obj;
 645
 646         args.eax = 0x86;
 647         args.ebx = args.ecx = args.edx = 0;
 648
 649         status = wmab_execute(&args, &out);
 650         if (ACPI_FAILURE(status))
 651                 return status;
 652
 653         obj = (union acpi_object *) out.pointer;
 654         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 655         obj->buffer.length == sizeof(struct wmab_ret)) {
 656                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 657         } else {
 658                 kfree(out.pointer);
 659                 return AE_ERROR;
 660         }
 661
 662         if (ret.eex & 0x1)
 663                 interface->capability |= ACER_CAP_MAILLED;
 664
 665         kfree(out.pointer);
 666
 667         return AE_OK;
 668 }
 669
 670 static acpi_status AMW0_set_capabilities(void)
 671 {
 672         struct wmab_args args;
 673         struct wmab_ret ret;
 674         acpi_status status;
 675         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 676         union acpi_object *obj;
 677
 678         /*
 679          * On laptops with this strange GUID (non Acer), normal probing doesn't
 680          * work.
 681          */
 682         if (wmi_has_guid(AMW0_GUID2)) {
 683                 interface->capability |= ACER_CAP_WIRELESS;
 684                 return AE_OK;
 685         }
 686
 687         args.eax = ACER_AMW0_WRITE;
 688         args.ecx = args.edx = 0;
 689
 690         args.ebx = 0xa2 << 8;
 691         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 692
 693         status = wmab_execute(&args, &out);
 694         if (ACPI_FAILURE(status))
 695                 return status;
 696
 697         obj = out.pointer;
 698         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 699         obj->buffer.length == sizeof(struct wmab_ret)) {
 700                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 701         } else {
 702                 status = AE_ERROR;
 703                 goto out;
 704         }
 705
 706         if (ret.eax & 0x1)
 707                 interface->capability |= ACER_CAP_WIRELESS;
 708
 709         args.ebx = 2 << 8;
 710         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 711
 712         /*
 713          * It's ok to use existing buffer for next wmab_execute call.
 714          * But we need to kfree(out.pointer) if next wmab_execute fail.
 715          */
 716         status = wmab_execute(&args, &out);
 717         if (ACPI_FAILURE(status))
 718                 goto out;
 719
 720         obj = (union acpi_object *) out.pointer;
 721         if (obj && obj->type == ACPI_TYPE_BUFFER
 722         && obj->buffer.length == sizeof(struct wmab_ret)) {
 723                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 724         } else {
 725                 status = AE_ERROR;
 726                 goto out;
 727         }
 728
 729         if (ret.eax & 0x1)
 730                 interface->capability |= ACER_CAP_BLUETOOTH;
 731
 732         /*
 733          * This appears to be safe to enable, since all Wistron based laptops
 734          * appear to use the same EC register for brightness, even if they
 735          * differ for wireless, etc
 736          */
 737         if (quirks->brightness >= 0)
 738                 interface->capability |= ACER_CAP_BRIGHTNESS;
 739
 740         status = AE_OK;
 741 out:
 742         kfree(out.pointer);
 743         return status;
 744 }
 745
 746 static struct wmi_interface AMW0_interface = {
 747         .type = ACER_AMW0,
 748 };
 749
 750 static struct wmi_interface AMW0_V2_interface = {
 751         .type = ACER_AMW0_V2,
 752 };
 753
 754 /*
 755  * New interface (The WMID interface)
 756  */
 757 static acpi_status
 758 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 759 {
 760         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 761         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 762         union acpi_object *obj;
 763         u32 tmp;
 764         acpi_status status;
 765
 766         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 767
 768         if (ACPI_FAILURE(status))
 769                 return status;
 770
 771         obj = (union acpi_object *) result.pointer;
 772         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 773                 (obj->buffer.length == sizeof(u32) ||
 774                 obj->buffer.length == sizeof(u64))) {
 775                 tmp = *((u32 *) obj->buffer.pointer);
 776         } else if (obj->type == ACPI_TYPE_INTEGER) {
 777                 tmp = (u32) obj->integer.value;
 778         } else {
 779                 tmp = 0;
 780         }
 781
 782         if (out)
 783                 *out = tmp;
 784
 785         kfree(result.pointer);
 786
 787         return status;
 788 }
 789
 790 static acpi_status WMID_get_u32(u32 *value, u32 cap,
 791 struct wmi_interface *iface)
 792 {
 793         acpi_status status;
 794         u8 tmp;
 795         u32 result, method_id = 0;
 796
 797         switch (cap) {
 798         case ACER_CAP_WIRELESS:
 799                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 800                 break;
 801         case ACER_CAP_BLUETOOTH:
 802                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 803                 break;
 804         case ACER_CAP_BRIGHTNESS:
 805                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 806                 break;
 807         case ACER_CAP_THREEG:
 808                 method_id = ACER_WMID_GET_THREEG_METHODID;
 809                 break;
 810         case ACER_CAP_MAILLED:
 811                 if (quirks->mailled == 1) {
 812                         ec_read(0x9f, &tmp);
 813                         *value = tmp & 0x1;
 814                         return 0;
 815                 }
 816         default:
 817                 return AE_ERROR;
 818         }
 819         status = WMI_execute_u32(method_id, 0, &result);
 820
 821         if (ACPI_SUCCESS(status))
 822                 *value = (u8)result;
 823
 824         return status;
 825 }
 826
 827 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
 828 {
 829         u32 method_id = 0;
 830         char param;
 831
 832         switch (cap) {
 833         case ACER_CAP_BRIGHTNESS:
 834                 if (value > max_brightness)
 835                         return AE_BAD_PARAMETER;
 836                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
 837                 break;
 838         case ACER_CAP_WIRELESS:
 839                 if (value > 1)
 840                         return AE_BAD_PARAMETER;
 841                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
 842                 break;
 843         case ACER_CAP_BLUETOOTH:
 844                 if (value > 1)
 845                         return AE_BAD_PARAMETER;
 846                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
 847                 break;
 848         case ACER_CAP_THREEG:
 849                 if (value > 1)
 850                         return AE_BAD_PARAMETER;
 851                 method_id = ACER_WMID_SET_THREEG_METHODID;
 852                 break;
 853         case ACER_CAP_MAILLED:
 854                 if (value > 1)
 855                         return AE_BAD_PARAMETER;
 856                 if (quirks->mailled == 1) {
 857                         param = value ? 0x92 : 0x93;
 858                         i8042_lock_chip();
 859                         i8042_command(&param, 0x1059);
 860                         i8042_unlock_chip();
 861                         return 0;
 862                 }
 863                 break;
 864         default:
 865                 return AE_ERROR;
 866         }
 867         return WMI_execute_u32(method_id, (u32)value, NULL);
 868 }
 869
 870 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
 871 {
 872         struct hotkey_function_type_aa *type_aa;
 873
 874         /* We are looking for OEM-specific Type AAh */
 875         if (header->type != 0xAA)
 876                 return;
 877
 878         has_type_aa = true;
 879         type_aa = (struct hotkey_function_type_aa *) header;
 880
 881         pr_info("Function bitmap for Communication Button: 0x%x\n",
 882                 type_aa->commun_func_bitmap);
 883
 884         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
 885                 interface->capability |= ACER_CAP_WIRELESS;
 886         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
 887                 interface->capability |= ACER_CAP_THREEG;
 888         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
 889                 interface->capability |= ACER_CAP_BLUETOOTH;
 890 }
 891
 892 static acpi_status WMID_set_capabilities(void)
 893 {
 894         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
 895         union acpi_object *obj;
 896         acpi_status status;
 897         u32 devices;
 898
 899         status = wmi_query_block(WMID_GUID2, 1, &out);
 900         if (ACPI_FAILURE(status))
 901                 return status;
 902
 903         obj = (union acpi_object *) out.pointer;
 904         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 905                 (obj->buffer.length == sizeof(u32) ||
 906                 obj->buffer.length == sizeof(u64))) {
 907                 devices = *((u32 *) obj->buffer.pointer);
 908         } else if (obj->type == ACPI_TYPE_INTEGER) {
 909                 devices = (u32) obj->integer.value;
 910         } else {
 911                 kfree(out.pointer);
 912                 return AE_ERROR;
 913         }
 914
 915         dmi_walk(type_aa_dmi_decode, NULL);
 916         if (!has_type_aa) {
 917                 interface->capability |= ACER_CAP_WIRELESS;
 918                 if (devices & 0x40)
 919                         interface->capability |= ACER_CAP_THREEG;
 920                 if (devices & 0x10)
 921                         interface->capability |= ACER_CAP_BLUETOOTH;
 922         }
 923
 924         /* WMID always provides brightness methods */
 925         interface->capability |= ACER_CAP_BRIGHTNESS;
 926
 927         if (!(devices & 0x20))
 928                 max_brightness = 0x9;
 929
 930         kfree(out.pointer);
 931         return status;
 932 }
 933
 934 static struct wmi_interface wmid_interface = {
 935         .type = ACER_WMID,
 936 };
 937
 938 /*
 939  * Generic Device (interface-independent)
 940  */
 941
 942 static acpi_status get_u32(u32 *value, u32 cap)
 943 {
 944         acpi_status status = AE_ERROR;
 945
 946         switch (interface->type) {
 947         case ACER_AMW0:
 948                 status = AMW0_get_u32(value, cap, interface);
 949                 break;
 950         case ACER_AMW0_V2:
 951                 if (cap == ACER_CAP_MAILLED) {
 952                         status = AMW0_get_u32(value, cap, interface);
 953                         break;
 954                 }
 955         case ACER_WMID:
 956                 status = WMID_get_u32(value, cap, interface);
 957                 break;
 958         }
 959
 960         return status;
 961 }
 962
 963 static acpi_status set_u32(u32 value, u32 cap)
 964 {
 965         acpi_status status;
 966
 967         if (interface->capability & cap) {
 968                 switch (interface->type) {
 969                 case ACER_AMW0:
 970                         return AMW0_set_u32(value, cap, interface);
 971                 case ACER_AMW0_V2:
 972                         if (cap == ACER_CAP_MAILLED)
 973                                 return AMW0_set_u32(value, cap, interface);
 974
 975                         /*
 976                          * On some models, some WMID methods don't toggle
 977                          * properly. For those cases, we want to run the AMW0
 978                          * method afterwards to be certain we've really toggled
 979                          * the device state.
 980                          */
 981                         if (cap == ACER_CAP_WIRELESS ||
 982                                 cap == ACER_CAP_BLUETOOTH) {
 983                                 status = WMID_set_u32(value, cap, interface);
 984                                 if (ACPI_FAILURE(status))
 985                                         return status;
 986
 987                                 return AMW0_set_u32(value, cap, interface);
 988                         }
 989                 case ACER_WMID:
 990                         return WMID_set_u32(value, cap, interface);
 991                 default:
 992                         return AE_BAD_PARAMETER;
 993                 }
 994         }
 995         return AE_BAD_PARAMETER;
 996 }
 997
 998 static void __init acer_commandline_init(void)
 999 {
1000         /*
1001          * These will all fail silently if the value given is invalid, or the
1002          * capability isn't available on the given interface
1003          */
1004         if (mailled >= 0)
1005                 set_u32(mailled, ACER_CAP_MAILLED);
1006         if (!has_type_aa && threeg >= 0)
1007                 set_u32(threeg, ACER_CAP_THREEG);
1008         if (brightness >= 0)
1009                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1010 }
1011
1012 /*
1013  * LED device (Mail LED only, no other LEDs known yet)
1014  */
1015 static void mail_led_set(struct led_classdev *led_cdev,
1016 enum led_brightness value)
1017 {
1018         set_u32(value, ACER_CAP_MAILLED);
1019 }
1020
1021 static struct led_classdev mail_led = {
1022         .name = "acer-wmi::mail",
1023         .brightness_set = mail_led_set,
1024 };
1025
1026 static int __devinit acer_led_init(struct device *dev)
1027 {
1028         return led_classdev_register(dev, &mail_led);
1029 }
1030
1031 static void acer_led_exit(void)
1032 {
1033         set_u32(LED_OFF, ACER_CAP_MAILLED);
1034         led_classdev_unregister(&mail_led);
1035 }
1036
1037 /*
1038  * Backlight device
1039  */
1040 static struct backlight_device *acer_backlight_device;
1041
1042 static int read_brightness(struct backlight_device *bd)
1043 {
1044         u32 value;
1045         get_u32(&value, ACER_CAP_BRIGHTNESS);
1046         return value;
1047 }
1048
1049 static int update_bl_status(struct backlight_device *bd)
1050 {
1051         int intensity = bd->props.brightness;
1052
1053         if (bd->props.power != FB_BLANK_UNBLANK)
1054                 intensity = 0;
1055         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1056                 intensity = 0;
1057
1058         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1059
1060         return 0;
1061 }
1062
1063 static const struct backlight_ops acer_bl_ops = {
1064         .get_brightness = read_brightness,
1065         .update_status = update_bl_status,
1066 };
1067
1068 static int __devinit acer_backlight_init(struct device *dev)
1069 {
1070         struct backlight_properties props;
1071         struct backlight_device *bd;
1072
1073         memset(&props, 0, sizeof(struct backlight_properties));
1074         props.type = BACKLIGHT_PLATFORM;
1075         props.max_brightness = max_brightness;
1076         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1077                                        &props);
1078         if (IS_ERR(bd)) {
1079                 pr_err("Could not register Acer backlight device\n");
1080                 acer_backlight_device = NULL;
1081                 return PTR_ERR(bd);
1082         }
1083
1084         acer_backlight_device = bd;
1085
1086         bd->props.power = FB_BLANK_UNBLANK;
1087         bd->props.brightness = read_brightness(bd);
1088         backlight_update_status(bd);
1089         return 0;
1090 }
1091
1092 static void acer_backlight_exit(void)
1093 {
1094         backlight_device_unregister(acer_backlight_device);
1095 }
1096
1097 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1098 {
1099         struct wmid3_gds_return_value return_value;
1100         acpi_status status;
1101         union acpi_object *obj;
1102         struct wmid3_gds_input_param params = {
1103                 .function_num = 0x1,
1104                 .hotkey_number = 0x01,
1105                 .devices = device,
1106         };
1107         struct acpi_buffer input = {
1108                 sizeof(struct wmid3_gds_input_param),
1109                 &params
1110         };
1111         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1112
1113         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1114         if (ACPI_FAILURE(status))
1115                 return status;
1116
1117         obj = output.pointer;
1118
1119         if (!obj)
1120                 return AE_ERROR;
1121         else if (obj->type != ACPI_TYPE_BUFFER) {
1122                 kfree(obj);
1123                 return AE_ERROR;
1124         }
1125         if (obj->buffer.length != 8) {
1126                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1127                 kfree(obj);
1128                 return AE_ERROR;
1129         }
1130
1131         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1132         kfree(obj);
1133
1134         if (return_value.error_code || return_value.ec_return_value)
1135                 pr_warn("Get Device Status failed: 0x%x - 0x%x\n",
1136                         return_value.error_code,
1137                         return_value.ec_return_value);
1138         else
1139                 *value = !!(return_value.devices & device);
1140
1141         return status;
1142 }
1143
1144 static acpi_status get_device_status(u32 *value, u32 cap)
1145 {
1146         if (wmi_has_guid(WMID_GUID3)) {
1147                 u16 device;
1148
1149                 switch (cap) {
1150                 case ACER_CAP_WIRELESS:
1151                         device = ACER_WMID3_GDS_WIRELESS;
1152                         break;
1153                 case ACER_CAP_BLUETOOTH:
1154                         device = ACER_WMID3_GDS_BLUETOOTH;
1155                         break;
1156                 case ACER_CAP_THREEG:
1157                         device = ACER_WMID3_GDS_THREEG;
1158                         break;
1159                 default:
1160                         return AE_ERROR;
1161                 }
1162                 return wmid3_get_device_status(value, device);
1163
1164         } else {
1165                 return get_u32(value, cap);
1166         }
1167 }
1168
1169 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1170 {
1171         struct wmid3_gds_return_value return_value;
1172         acpi_status status;
1173         union acpi_object *obj;
1174         u16 devices;
1175         struct wmid3_gds_input_param params = {
1176                 .function_num = 0x1,
1177                 .hotkey_number = 0x01,
1178                 .devices = ACER_WMID3_GDS_WIRELESS |
1179                                 ACER_WMID3_GDS_THREEG |
1180                                 ACER_WMID3_GDS_WIMAX |
1181                                 ACER_WMID3_GDS_BLUETOOTH,
1182         };
1183         struct acpi_buffer input = {
1184                 sizeof(struct wmid3_gds_input_param),
1185                 &params
1186         };
1187         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1188         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1189
1190         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1191         if (ACPI_FAILURE(status))
1192                 return status;
1193
1194         obj = output.pointer;
1195
1196         if (!obj)
1197                 return AE_ERROR;
1198         else if (obj->type != ACPI_TYPE_BUFFER) {
1199                 kfree(obj);
1200                 return AE_ERROR;
1201         }
1202         if (obj->buffer.length != 8) {
1203                 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1204                 kfree(obj);
1205                 return AE_ERROR;
1206         }
1207
1208         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1209         kfree(obj);
1210
1211         if (return_value.error_code || return_value.ec_return_value) {
1212                 pr_warning("Get Current Device Status failed: "
1213                         "0x%x - 0x%x\n", return_value.error_code,
1214                         return_value.ec_return_value);
1215                 return status;
1216         }
1217
1218         devices = return_value.devices;
1219         params.function_num = 0x2;
1220         params.hotkey_number = 0x01;
1221         params.devices = (value) ? (devices | device) : (devices & ~device);
1222
1223         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
1224         if (ACPI_FAILURE(status))
1225                 return status;
1226
1227         obj = output2.pointer;
1228
1229         if (!obj)
1230                 return AE_ERROR;
1231         else if (obj->type != ACPI_TYPE_BUFFER) {
1232                 kfree(obj);
1233                 return AE_ERROR;
1234         }
1235         if (obj->buffer.length != 4) {
1236                 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1237                 kfree(obj);
1238                 return AE_ERROR;
1239         }
1240
1241         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1242         kfree(obj);
1243
1244         if (return_value.error_code || return_value.ec_return_value)
1245                 pr_warning("Set Device Status failed: "
1246                         "0x%x - 0x%x\n", return_value.error_code,
1247                         return_value.ec_return_value);
1248
1249         return status;
1250 }
1251
1252 static acpi_status set_device_status(u32 value, u32 cap)
1253 {
1254         if (wmi_has_guid(WMID_GUID3)) {
1255                 u16 device;
1256
1257                 switch (cap) {
1258                 case ACER_CAP_WIRELESS:
1259                         device = ACER_WMID3_GDS_WIRELESS;
1260                         break;
1261                 case ACER_CAP_BLUETOOTH:
1262                         device = ACER_WMID3_GDS_BLUETOOTH;
1263                         break;
1264                 case ACER_CAP_THREEG:
1265                         device = ACER_WMID3_GDS_THREEG;
1266                         break;
1267                 default:
1268                         return AE_ERROR;
1269                 }
1270                 return wmid3_set_device_status(value, device);
1271
1272         } else {
1273                 return set_u32(value, cap);
1274         }
1275 }
1276
1277 /*
1278  * Rfkill devices
1279  */
1280 static void acer_rfkill_update(struct work_struct *ignored);
1281 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1282 static void acer_rfkill_update(struct work_struct *ignored)
1283 {
1284         u32 state;
1285         acpi_status status;
1286
1287         status = get_u32(&state, ACER_CAP_WIRELESS);
1288         if (ACPI_SUCCESS(status)) {
1289                 if (quirks->wireless == 3) {
1290                         rfkill_set_hw_state(wireless_rfkill, !state);
1291                 } else {
1292                         rfkill_set_sw_state(wireless_rfkill, !state);
1293                 }
1294         }
1295
1296         if (has_cap(ACER_CAP_BLUETOOTH)) {
1297                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1298                 if (ACPI_SUCCESS(status))
1299                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1300         }
1301
1302         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1303                 status = wmid3_get_device_status(&state,
1304                                 ACER_WMID3_GDS_THREEG);
1305                 if (ACPI_SUCCESS(status))
1306                         rfkill_set_sw_state(threeg_rfkill, !state);
1307         }
1308
1309         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1310 }
1311
1312 static int acer_rfkill_set(void *data, bool blocked)
1313 {
1314         acpi_status status;
1315         u32 cap = (unsigned long)data;
1316
1317         if (rfkill_inited) {
1318                 status = set_device_status(!blocked, cap);
1319                 if (ACPI_FAILURE(status))
1320                         return -ENODEV;
1321         }
1322
1323         return 0;
1324 }
1325
1326 static const struct rfkill_ops acer_rfkill_ops = {
1327         .set_block = acer_rfkill_set,
1328 };
1329
1330 static struct rfkill *acer_rfkill_register(struct device *dev,
1331                                            enum rfkill_type type,
1332                                            char *name, u32 cap)
1333 {
1334         int err;
1335         struct rfkill *rfkill_dev;
1336         u32 state;
1337         acpi_status status;
1338
1339         rfkill_dev = rfkill_alloc(name, dev, type,
1340                                   &acer_rfkill_ops,
1341                                   (void *)(unsigned long)cap);
1342         if (!rfkill_dev)
1343                 return ERR_PTR(-ENOMEM);
1344
1345         status = get_device_status(&state, cap);
1346
1347         err = rfkill_register(rfkill_dev);
1348         if (err) {
1349                 rfkill_destroy(rfkill_dev);
1350                 return ERR_PTR(err);
1351         }
1352
1353         if (ACPI_SUCCESS(status))
1354                 rfkill_set_sw_state(rfkill_dev, !state);
1355
1356         return rfkill_dev;
1357 }
1358
1359 static int acer_rfkill_init(struct device *dev)
1360 {
1361         wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1362                 "acer-wireless", ACER_CAP_WIRELESS);
1363         if (IS_ERR(wireless_rfkill))
1364                 return PTR_ERR(wireless_rfkill);
1365
1366         if (has_cap(ACER_CAP_BLUETOOTH)) {
1367                 bluetooth_rfkill = acer_rfkill_register(dev,
1368                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1369                         ACER_CAP_BLUETOOTH);
1370                 if (IS_ERR(bluetooth_rfkill)) {
1371                         rfkill_unregister(wireless_rfkill);
1372                         rfkill_destroy(wireless_rfkill);
1373                         return PTR_ERR(bluetooth_rfkill);
1374                 }
1375         }
1376
1377         if (has_cap(ACER_CAP_THREEG)) {
1378                 threeg_rfkill = acer_rfkill_register(dev,
1379                         RFKILL_TYPE_WWAN, "acer-threeg",
1380                         ACER_CAP_THREEG);
1381                 if (IS_ERR(threeg_rfkill)) {
1382                         rfkill_unregister(wireless_rfkill);
1383                         rfkill_destroy(wireless_rfkill);
1384                         rfkill_unregister(bluetooth_rfkill);
1385                         rfkill_destroy(bluetooth_rfkill);
1386                         return PTR_ERR(threeg_rfkill);
1387                 }
1388         }
1389
1390         rfkill_inited = true;
1391
1392         if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1393                 schedule_delayed_work(&acer_rfkill_work,
1394                         round_jiffies_relative(HZ));
1395
1396         return 0;
1397 }
1398
1399 static void acer_rfkill_exit(void)
1400 {
1401         if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1402                 cancel_delayed_work_sync(&acer_rfkill_work);
1403
1404         rfkill_unregister(wireless_rfkill);
1405         rfkill_destroy(wireless_rfkill);
1406
1407         if (has_cap(ACER_CAP_BLUETOOTH)) {
1408                 rfkill_unregister(bluetooth_rfkill);
1409                 rfkill_destroy(bluetooth_rfkill);
1410         }
1411
1412         if (has_cap(ACER_CAP_THREEG)) {
1413                 rfkill_unregister(threeg_rfkill);
1414                 rfkill_destroy(threeg_rfkill);
1415         }
1416         return;
1417 }
1418
1419 /*
1420  * sysfs interface
1421  */
1422 static ssize_t show_bool_threeg(struct device *dev,
1423         struct device_attribute *attr, char *buf)
1424 {
1425         u32 result; \
1426         acpi_status status;
1427         if (wmi_has_guid(WMID_GUID3))
1428                 status = wmid3_get_device_status(&result,
1429                                 ACER_WMID3_GDS_THREEG);
1430         else
1431                 status = get_u32(&result, ACER_CAP_THREEG);
1432         if (ACPI_SUCCESS(status))
1433                 return sprintf(buf, "%u\n", result);
1434         return sprintf(buf, "Read error\n");
1435 }
1436
1437 static ssize_t set_bool_threeg(struct device *dev,
1438         struct device_attribute *attr, const char *buf, size_t count)
1439 {
1440         u32 tmp = simple_strtoul(buf, NULL, 10);
1441         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1442                 if (ACPI_FAILURE(status))
1443                         return -EINVAL;
1444         return count;
1445 }
1446 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1447         set_bool_threeg);
1448
1449 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1450         char *buf)
1451 {
1452         switch (interface->type) {
1453         case ACER_AMW0:
1454                 return sprintf(buf, "AMW0\n");
1455         case ACER_AMW0_V2:
1456                 return sprintf(buf, "AMW0 v2\n");
1457         case ACER_WMID:
1458                 return sprintf(buf, "WMID\n");
1459         default:
1460                 return sprintf(buf, "Error!\n");
1461         }
1462 }
1463
1464 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1465
1466 static void acer_wmi_notify(u32 value, void *context)
1467 {
1468         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1469         union acpi_object *obj;
1470         struct event_return_value return_value;
1471         acpi_status status;
1472         u16 device_state;
1473         const struct key_entry *key;
1474
1475         status = wmi_get_event_data(value, &response);
1476         if (status != AE_OK) {
1477                 pr_warn("bad event status 0x%x\n", status);
1478                 return;
1479         }
1480
1481         obj = (union acpi_object *)response.pointer;
1482
1483         if (!obj)
1484                 return;
1485         if (obj->type != ACPI_TYPE_BUFFER) {
1486                 pr_warn("Unknown response received %d\n", obj->type);
1487                 kfree(obj);
1488                 return;
1489         }
1490         if (obj->buffer.length != 8) {
1491                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1492                 kfree(obj);
1493                 return;
1494         }
1495
1496         return_value = *((struct event_return_value *)obj->buffer.pointer);
1497         kfree(obj);
1498
1499         switch (return_value.function) {
1500         case WMID_HOTKEY_EVENT:
1501                 device_state = return_value.device_state;
1502                 pr_debug("device state: 0x%x\n", device_state);
1503
1504                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1505                                                         return_value.key_num);
1506                 if (!key) {
1507                         pr_warn("Unknown key number - 0x%x\n",
1508                                 return_value.key_num);
1509                 } else {
1510                         switch (key->keycode) {
1511                         case KEY_WLAN:
1512                         case KEY_BLUETOOTH:
1513                                 if (has_cap(ACER_CAP_WIRELESS))
1514                                         rfkill_set_sw_state(wireless_rfkill,
1515                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1516                                 if (has_cap(ACER_CAP_THREEG))
1517                                         rfkill_set_sw_state(threeg_rfkill,
1518                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1519                                 if (has_cap(ACER_CAP_BLUETOOTH))
1520                                         rfkill_set_sw_state(bluetooth_rfkill,
1521                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1522                                 break;
1523                         }
1524                         sparse_keymap_report_entry(acer_wmi_input_dev, key,
1525                                                    1, true);
1526                 }
1527                 break;
1528         default:
1529                 pr_warn("Unknown function number - %d - %d\n",
1530                         return_value.function, return_value.key_num);
1531                 break;
1532         }
1533 }
1534
1535 static acpi_status
1536 wmid3_set_lm_mode(struct lm_input_params *params,
1537                   struct lm_return_value *return_value)
1538 {
1539         acpi_status status;
1540         union acpi_object *obj;
1541
1542         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1543         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1544
1545         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1546         if (ACPI_FAILURE(status))
1547                 return status;
1548
1549         obj = output.pointer;
1550
1551         if (!obj)
1552                 return AE_ERROR;
1553         else if (obj->type != ACPI_TYPE_BUFFER) {
1554                 kfree(obj);
1555                 return AE_ERROR;
1556         }
1557         if (obj->buffer.length != 4) {
1558                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1559                 kfree(obj);
1560                 return AE_ERROR;
1561         }
1562
1563         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1564         kfree(obj);
1565
1566         return status;
1567 }
1568
1569 static int acer_wmi_enable_ec_raw(void)
1570 {
1571         struct lm_return_value return_value;
1572         acpi_status status;
1573         struct lm_input_params params = {
1574                 .function_num = 0x1,
1575                 .commun_devices = 0xFFFF,
1576                 .devices = 0xFFFF,
1577                 .lm_status = 0x00,            /* Launch Manager Deactive */
1578         };
1579
1580         status = wmid3_set_lm_mode(&params, &return_value);
1581
1582         if (return_value.error_code || return_value.ec_return_value)
1583                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1584                         return_value.error_code,
1585                         return_value.ec_return_value);
1586         else
1587                 pr_info("Enabled EC raw mode\n");
1588
1589         return status;
1590 }
1591
1592 static int acer_wmi_enable_lm(void)
1593 {
1594         struct lm_return_value return_value;
1595         acpi_status status;
1596         struct lm_input_params params = {
1597                 .function_num = 0x1,
1598                 .commun_devices = 0xFFFF,
1599                 .devices = 0xFFFF,
1600                 .lm_status = 0x01,            /* Launch Manager Active */
1601         };
1602
1603         status = wmid3_set_lm_mode(&params, &return_value);
1604
1605         if (return_value.error_code || return_value.ec_return_value)
1606                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1607                         return_value.error_code,
1608                         return_value.ec_return_value);
1609
1610         return status;
1611 }
1612
1613 static int __init acer_wmi_input_setup(void)
1614 {
1615         acpi_status status;
1616         int err;
1617
1618         acer_wmi_input_dev = input_allocate_device();
1619         if (!acer_wmi_input_dev)
1620                 return -ENOMEM;
1621
1622         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1623         acer_wmi_input_dev->phys = "wmi/input0";
1624         acer_wmi_input_dev->id.bustype = BUS_HOST;
1625
1626         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1627         if (err)
1628                 goto err_free_dev;
1629
1630         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1631                                                 acer_wmi_notify, NULL);
1632         if (ACPI_FAILURE(status)) {
1633                 err = -EIO;
1634                 goto err_free_keymap;
1635         }
1636
1637         err = input_register_device(acer_wmi_input_dev);
1638         if (err)
1639                 goto err_uninstall_notifier;
1640
1641         return 0;
1642
1643 err_uninstall_notifier:
1644         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1645 err_free_keymap:
1646         sparse_keymap_free(acer_wmi_input_dev);
1647 err_free_dev:
1648         input_free_device(acer_wmi_input_dev);
1649         return err;
1650 }
1651
1652 static void acer_wmi_input_destroy(void)
1653 {
1654         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1655         sparse_keymap_free(acer_wmi_input_dev);
1656         input_unregister_device(acer_wmi_input_dev);
1657 }
1658
1659 /*
1660  * debugfs functions
1661  */
1662 static u32 get_wmid_devices(void)
1663 {
1664         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1665         union acpi_object *obj;
1666         acpi_status status;
1667         u32 devices = 0;
1668
1669         status = wmi_query_block(WMID_GUID2, 1, &out);
1670         if (ACPI_FAILURE(status))
1671                 return 0;
1672
1673         obj = (union acpi_object *) out.pointer;
1674         if (obj && obj->type == ACPI_TYPE_BUFFER &&
1675                 (obj->buffer.length == sizeof(u32) ||
1676                 obj->buffer.length == sizeof(u64))) {
1677                 devices = *((u32 *) obj->buffer.pointer);
1678         } else if (obj->type == ACPI_TYPE_INTEGER) {
1679                 devices = (u32) obj->integer.value;
1680         }
1681
1682         kfree(out.pointer);
1683         return devices;
1684 }
1685
1686 /*
1687  * Platform device
1688  */
1689 static int __devinit acer_platform_probe(struct platform_device *device)
1690 {
1691         int err;
1692
1693         if (has_cap(ACER_CAP_MAILLED)) {
1694                 err = acer_led_init(&device->dev);
1695                 if (err)
1696                         goto error_mailled;
1697         }
1698
1699         if (has_cap(ACER_CAP_BRIGHTNESS)) {
1700                 err = acer_backlight_init(&device->dev);
1701                 if (err)
1702                         goto error_brightness;
1703         }
1704
1705         err = acer_rfkill_init(&device->dev);
1706         if (err)
1707                 goto error_rfkill;
1708
1709         return err;
1710
1711 error_rfkill:
1712         if (has_cap(ACER_CAP_BRIGHTNESS))
1713                 acer_backlight_exit();
1714 error_brightness:
1715         if (has_cap(ACER_CAP_MAILLED))
1716                 acer_led_exit();
1717 error_mailled:
1718         return err;
1719 }
1720
1721 static int acer_platform_remove(struct platform_device *device)
1722 {
1723         if (has_cap(ACER_CAP_MAILLED))
1724                 acer_led_exit();
1725         if (has_cap(ACER_CAP_BRIGHTNESS))
1726                 acer_backlight_exit();
1727
1728         acer_rfkill_exit();
1729         return 0;
1730 }
1731
1732 static int acer_platform_suspend(struct platform_device *dev,
1733 pm_message_t state)
1734 {
1735         u32 value;
1736         struct acer_data *data = &interface->data;
1737
1738         if (!data)
1739                 return -ENOMEM;
1740
1741         if (has_cap(ACER_CAP_MAILLED)) {
1742                 get_u32(&value, ACER_CAP_MAILLED);
1743                 set_u32(LED_OFF, ACER_CAP_MAILLED);
1744                 data->mailled = value;
1745         }
1746
1747         if (has_cap(ACER_CAP_BRIGHTNESS)) {
1748                 get_u32(&value, ACER_CAP_BRIGHTNESS);
1749                 data->brightness = value;
1750         }
1751
1752         return 0;
1753 }
1754
1755 static int acer_platform_resume(struct platform_device *device)
1756 {
1757         struct acer_data *data = &interface->data;
1758
1759         if (!data)
1760                 return -ENOMEM;
1761
1762         if (has_cap(ACER_CAP_MAILLED))
1763                 set_u32(data->mailled, ACER_CAP_MAILLED);
1764
1765         if (has_cap(ACER_CAP_BRIGHTNESS))
1766                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1767
1768         return 0;
1769 }
1770
1771 static void acer_platform_shutdown(struct platform_device *device)
1772 {
1773         struct acer_data *data = &interface->data;
1774
1775         if (!data)
1776                 return;
1777
1778         if (has_cap(ACER_CAP_MAILLED))
1779                 set_u32(LED_OFF, ACER_CAP_MAILLED);
1780 }
1781
1782 static struct platform_driver acer_platform_driver = {
1783         .driver = {
1784                 .name = "acer-wmi",
1785                 .owner = THIS_MODULE,
1786         },
1787         .probe = acer_platform_probe,
1788         .remove = acer_platform_remove,
1789         .suspend = acer_platform_suspend,
1790         .resume = acer_platform_resume,
1791         .shutdown = acer_platform_shutdown,
1792 };
1793
1794 static struct platform_device *acer_platform_device;
1795
1796 static int remove_sysfs(struct platform_device *device)
1797 {
1798         if (has_cap(ACER_CAP_THREEG))
1799                 device_remove_file(&device->dev, &dev_attr_threeg);
1800
1801         device_remove_file(&device->dev, &dev_attr_interface);
1802
1803         return 0;
1804 }
1805
1806 static int create_sysfs(void)
1807 {
1808         int retval = -ENOMEM;
1809
1810         if (has_cap(ACER_CAP_THREEG)) {
1811                 retval = device_create_file(&acer_platform_device->dev,
1812                         &dev_attr_threeg);
1813                 if (retval)
1814                         goto error_sysfs;
1815         }
1816
1817         retval = device_create_file(&acer_platform_device->dev,
1818                 &dev_attr_interface);
1819         if (retval)
1820                 goto error_sysfs;
1821
1822         return 0;
1823
1824 error_sysfs:
1825                 remove_sysfs(acer_platform_device);
1826         return retval;
1827 }
1828
1829 static void remove_debugfs(void)
1830 {
1831         debugfs_remove(interface->debug.devices);
1832         debugfs_remove(interface->debug.root);
1833 }
1834
1835 static int create_debugfs(void)
1836 {
1837         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1838         if (!interface->debug.root) {
1839                 pr_err("Failed to create debugfs directory");
1840                 return -ENOMEM;
1841         }
1842
1843         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1844                                         interface->debug.root,
1845                                         &interface->debug.wmid_devices);
1846         if (!interface->debug.devices)
1847                 goto error_debugfs;
1848
1849         return 0;
1850
1851 error_debugfs:
1852         remove_debugfs();
1853         return -ENOMEM;
1854 }
1855
1856 static int __init acer_wmi_init(void)
1857 {
1858         int err;
1859
1860         pr_info("Acer Laptop ACPI-WMI Extras\n");
1861
1862         if (dmi_check_system(acer_blacklist)) {
1863                 pr_info("Blacklisted hardware detected - not loading\n");
1864                 return -ENODEV;
1865         }
1866
1867         find_quirks();
1868
1869         /*
1870          * Detect which ACPI-WMI interface we're using.
1871          */
1872         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1873                 interface = &AMW0_V2_interface;
1874
1875         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1876                 interface = &wmid_interface;
1877
1878         if (wmi_has_guid(WMID_GUID2) && interface) {
1879                 if (ACPI_FAILURE(WMID_set_capabilities())) {
1880                         pr_err("Unable to detect available WMID devices\n");
1881                         return -ENODEV;
1882                 }
1883         } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1884                 pr_err("No WMID device detection method found\n");
1885                 return -ENODEV;
1886         }
1887
1888         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1889                 interface = &AMW0_interface;
1890
1891                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1892                         pr_err("Unable to detect available AMW0 devices\n");
1893                         return -ENODEV;
1894                 }
1895         }
1896
1897         if (wmi_has_guid(AMW0_GUID1))
1898                 AMW0_find_mailled();
1899
1900         if (!interface) {
1901                 pr_err("No or unsupported WMI interface, unable to load\n");
1902                 return -ENODEV;
1903         }
1904
1905         set_quirks();
1906
1907         if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1908                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1909                 pr_info("Brightness must be controlled by "
1910                        "generic video driver\n");
1911         }
1912
1913         if (wmi_has_guid(WMID_GUID3)) {
1914                 if (ec_raw_mode) {
1915                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1916                                 pr_err("Cannot enable EC raw mode\n");
1917                                 return -ENODEV;
1918                         }
1919                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1920                         pr_err("Cannot enable Launch Manager mode\n");
1921                         return -ENODEV;
1922                 }
1923         } else if (ec_raw_mode) {
1924                 pr_info("No WMID EC raw mode enable method\n");
1925         }
1926
1927         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1928                 err = acer_wmi_input_setup();
1929                 if (err)
1930                         return err;
1931         }
1932
1933         err = platform_driver_register(&acer_platform_driver);
1934         if (err) {
1935                 pr_err("Unable to register platform driver.\n");
1936                 goto error_platform_register;
1937         }
1938
1939         acer_platform_device = platform_device_alloc("acer-wmi", -1);
1940         if (!acer_platform_device) {
1941                 err = -ENOMEM;
1942                 goto error_device_alloc;
1943         }
1944
1945         err = platform_device_add(acer_platform_device);
1946         if (err)
1947                 goto error_device_add;
1948
1949         err = create_sysfs();
1950         if (err)
1951                 goto error_create_sys;
1952
1953         if (wmi_has_guid(WMID_GUID2)) {
1954                 interface->debug.wmid_devices = get_wmid_devices();
1955                 err = create_debugfs();
1956                 if (err)
1957                         goto error_create_debugfs;
1958         }
1959
1960         /* Override any initial settings with values from the commandline */
1961         acer_commandline_init();
1962
1963         return 0;
1964
1965 error_create_debugfs:
1966         remove_sysfs(acer_platform_device);
1967 error_create_sys:
1968         platform_device_del(acer_platform_device);
1969 error_device_add:
1970         platform_device_put(acer_platform_device);
1971 error_device_alloc:
1972         platform_driver_unregister(&acer_platform_driver);
1973 error_platform_register:
1974         if (wmi_has_guid(ACERWMID_EVENT_GUID))
1975                 acer_wmi_input_destroy();
1976
1977         return err;
1978 }
1979
1980 static void __exit acer_wmi_exit(void)
1981 {
1982         if (wmi_has_guid(ACERWMID_EVENT_GUID))
1983                 acer_wmi_input_destroy();
1984
1985         remove_sysfs(acer_platform_device);
1986         remove_debugfs();
1987         platform_device_unregister(acer_platform_device);
1988         platform_driver_unregister(&acer_platform_driver);
1989
1990         pr_info("Acer Laptop WMI Extras unloaded\n");
1991         return;
1992 }
1993
1994 module_init(acer_wmi_init);
1995 module_exit(acer_wmi_exit);