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, 0x04, {KEY_WLAN} },     /* WiFi */
 103         {KE_KEY, 0x12, {KEY_BLUETOOTH} },       /* BT */
 104         {KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
 105         {KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
 106         {KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
 107         {KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
 108         {KE_IGNORE, 0x41, {KEY_MUTE} },
 109         {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
 110         {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
 111         {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
 112         {KE_IGNORE, 0x45, {KEY_STOP} },
 113         {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
 114         {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
 115         {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
 116         {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 117         {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 118         {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
 119         {KE_IGNORE, 0x81, {KEY_SLEEP} },
 120         {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
 121         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 122         {KE_END, 0}
 123 };
 124
 125 static struct input_dev *acer_wmi_input_dev;
 126
 127 struct event_return_value {
 128         u8 function;
 129         u8 key_num;
 130         u16 device_state;
 131         u32 reserved;
 132 } __attribute__((packed));
 133
 134 /*
 135  * GUID3 Get Device Status device flags
 136  */
 137 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 138 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 139 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 140 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 141
 142 struct lm_input_params {
 143         u8 function_num;        /* Function Number */
 144         u16 commun_devices;     /* Communication type devices default status */
 145         u16 devices;            /* Other type devices default status */
 146         u8 lm_status;           /* Launch Manager Status */
 147         u16 reserved;
 148 } __attribute__((packed));
 149
 150 struct lm_return_value {
 151         u8 error_code;          /* Error Code */
 152         u8 ec_return_value;     /* EC Return Value */
 153         u16 reserved;
 154 } __attribute__((packed));
 155
 156 struct wmid3_gds_input_param {  /* Get Device Status input parameter */
 157         u8 function_num;        /* Function Number */
 158         u8 hotkey_number;       /* Hotkey Number */
 159         u16 devices;            /* Get Device */
 160 } __attribute__((packed));
 161
 162 struct wmid3_gds_return_value { /* Get Device Status return value*/
 163         u8 error_code;          /* Error Code */
 164         u8 ec_return_value;     /* EC Return Value */
 165         u16 devices;            /* Current Device Status */
 166         u32 reserved;
 167 } __attribute__((packed));
 168
 169 struct hotkey_function_type_aa {
 170         u8 type;
 171         u8 length;
 172         u16 handle;
 173         u16 commun_func_bitmap;
 174 } __attribute__((packed));
 175
 176 /*
 177  * Interface capability flags
 178  */
 179 #define ACER_CAP_MAILLED                (1<<0)
 180 #define ACER_CAP_WIRELESS               (1<<1)
 181 #define ACER_CAP_BLUETOOTH              (1<<2)
 182 #define ACER_CAP_BRIGHTNESS             (1<<3)
 183 #define ACER_CAP_THREEG                 (1<<4)
 184 #define ACER_CAP_ANY                    (0xFFFFFFFF)
 185
 186 /*
 187  * Interface type flags
 188  */
 189 enum interface_flags {
 190         ACER_AMW0,
 191         ACER_AMW0_V2,
 192         ACER_WMID,
 193 };
 194
 195 #define ACER_DEFAULT_WIRELESS  0
 196 #define ACER_DEFAULT_BLUETOOTH 0
 197 #define ACER_DEFAULT_MAILLED   0
 198 #define ACER_DEFAULT_THREEG    0
 199
 200 static int max_brightness = 0xF;
 201
 202 static int mailled = -1;
 203 static int brightness = -1;
 204 static int threeg = -1;
 205 static int force_series;
 206 static bool ec_raw_mode;
 207 static bool has_type_aa;
 208
 209 module_param(mailled, int, 0444);
 210 module_param(brightness, int, 0444);
 211 module_param(threeg, int, 0444);
 212 module_param(force_series, int, 0444);
 213 module_param(ec_raw_mode, bool, 0444);
 214 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 215 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 216 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 217 MODULE_PARM_DESC(force_series, "Force a different laptop series");
 218 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 219
 220 struct acer_data {
 221         int mailled;
 222         int threeg;
 223         int brightness;
 224 };
 225
 226 struct acer_debug {
 227         struct dentry *root;
 228         struct dentry *devices;
 229         u32 wmid_devices;
 230 };
 231
 232 static struct rfkill *wireless_rfkill;
 233 static struct rfkill *bluetooth_rfkill;
 234 static struct rfkill *threeg_rfkill;
 235 static bool rfkill_inited;
 236
 237 /* Each low-level interface must define at least some of the following */
 238 struct wmi_interface {
 239         /* The WMI device type */
 240         u32 type;
 241
 242         /* The capabilities this interface provides */
 243         u32 capability;
 244
 245         /* Private data for the current interface */
 246         struct acer_data data;
 247
 248         /* debugfs entries associated with this interface */
 249         struct acer_debug debug;
 250 };
 251
 252 /* The static interface pointer, points to the currently detected interface */
 253 static struct wmi_interface *interface;
 254
 255 /*
 256  * Embedded Controller quirks
 257  * Some laptops require us to directly access the EC to either enable or query
 258  * features that are not available through WMI.
 259  */
 260
 261 struct quirk_entry {
 262         u8 wireless;
 263         u8 mailled;
 264         s8 brightness;
 265         u8 bluetooth;
 266 };
 267
 268 static struct quirk_entry *quirks;
 269
 270 static void set_quirks(void)
 271 {
 272         if (!interface)
 273                 return;
 274
 275         if (quirks->mailled)
 276                 interface->capability |= ACER_CAP_MAILLED;
 277
 278         if (quirks->brightness)
 279                 interface->capability |= ACER_CAP_BRIGHTNESS;
 280 }
 281
 282 static int dmi_matched(const struct dmi_system_id *dmi)
 283 {
 284         quirks = dmi->driver_data;
 285         return 1;
 286 }
 287
 288 static struct quirk_entry quirk_unknown = {
 289 };
 290
 291 static struct quirk_entry quirk_acer_aspire_1520 = {
 292         .brightness = -1,
 293 };
 294
 295 static struct quirk_entry quirk_acer_travelmate_2490 = {
 296         .mailled = 1,
 297 };
 298
 299 /* This AMW0 laptop has no bluetooth */
 300 static struct quirk_entry quirk_medion_md_98300 = {
 301         .wireless = 1,
 302 };
 303
 304 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 305         .wireless = 2,
 306 };
 307
 308 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 309         .wireless = 3,
 310 };
 311
 312 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
 313 static struct dmi_system_id __devinitdata acer_blacklist[] = {
 314         {
 315                 .ident = "Acer Aspire One (SSD)",
 316                 .matches = {
 317                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 318                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 319                 },
 320         },
 321         {
 322                 .ident = "Acer Aspire One (HDD)",
 323                 .matches = {
 324                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 325                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 326                 },
 327         },
 328         {}
 329 };
 330
 331 static struct dmi_system_id acer_quirks[] = {
 332         {
 333                 .callback = dmi_matched,
 334                 .ident = "Acer Aspire 1360",
 335                 .matches = {
 336                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 337                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 338                 },
 339                 .driver_data = &quirk_acer_aspire_1520,
 340         },
 341         {
 342                 .callback = dmi_matched,
 343                 .ident = "Acer Aspire 1520",
 344                 .matches = {
 345                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 346                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 347                 },
 348                 .driver_data = &quirk_acer_aspire_1520,
 349         },
 350         {
 351                 .callback = dmi_matched,
 352                 .ident = "Acer Aspire 3100",
 353                 .matches = {
 354                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 355                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 356                 },
 357                 .driver_data = &quirk_acer_travelmate_2490,
 358         },
 359         {
 360                 .callback = dmi_matched,
 361                 .ident = "Acer Aspire 3610",
 362                 .matches = {
 363                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 364                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 365                 },
 366                 .driver_data = &quirk_acer_travelmate_2490,
 367         },
 368         {
 369                 .callback = dmi_matched,
 370                 .ident = "Acer Aspire 5100",
 371                 .matches = {
 372                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 373                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 374                 },
 375                 .driver_data = &quirk_acer_travelmate_2490,
 376         },
 377         {
 378                 .callback = dmi_matched,
 379                 .ident = "Acer Aspire 5610",
 380                 .matches = {
 381                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 382                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 383                 },
 384                 .driver_data = &quirk_acer_travelmate_2490,
 385         },
 386         {
 387                 .callback = dmi_matched,
 388                 .ident = "Acer Aspire 5630",
 389                 .matches = {
 390                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 391                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 392                 },
 393                 .driver_data = &quirk_acer_travelmate_2490,
 394         },
 395         {
 396                 .callback = dmi_matched,
 397                 .ident = "Acer Aspire 5650",
 398                 .matches = {
 399                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 400                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 401                 },
 402                 .driver_data = &quirk_acer_travelmate_2490,
 403         },
 404         {
 405                 .callback = dmi_matched,
 406                 .ident = "Acer Aspire 5680",
 407                 .matches = {
 408                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 409                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 410                 },
 411                 .driver_data = &quirk_acer_travelmate_2490,
 412         },
 413         {
 414                 .callback = dmi_matched,
 415                 .ident = "Acer Aspire 9110",
 416                 .matches = {
 417                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 418                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 419                 },
 420                 .driver_data = &quirk_acer_travelmate_2490,
 421         },
 422         {
 423                 .callback = dmi_matched,
 424                 .ident = "Acer TravelMate 2490",
 425                 .matches = {
 426                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 427                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 428                 },
 429                 .driver_data = &quirk_acer_travelmate_2490,
 430         },
 431         {
 432                 .callback = dmi_matched,
 433                 .ident = "Acer TravelMate 4200",
 434                 .matches = {
 435                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 436                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 437                 },
 438                 .driver_data = &quirk_acer_travelmate_2490,
 439         },
 440         {
 441                 .callback = dmi_matched,
 442                 .ident = "Fujitsu Siemens Amilo Li 1718",
 443                 .matches = {
 444                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 445                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 446                 },
 447                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 448         },
 449         {
 450                 .callback = dmi_matched,
 451                 .ident = "Medion MD 98300",
 452                 .matches = {
 453                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 454                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 455                 },
 456                 .driver_data = &quirk_medion_md_98300,
 457         },
 458         {
 459                 .callback = dmi_matched,
 460                 .ident = "Lenovo Ideapad S205",
 461                 .matches = {
 462                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 463                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 464                 },
 465                 .driver_data = &quirk_lenovo_ideapad_s205,
 466         },
 467         {
 468                 .callback = dmi_matched,
 469                 .ident = "Lenovo 3000 N200",
 470                 .matches = {
 471                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 472                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 473                 },
 474                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 475         },
 476         {}
 477 };
 478
 479 /* Find which quirks are needed for a particular vendor/ model pair */
 480 static void find_quirks(void)
 481 {
 482         if (!force_series) {
 483                 dmi_check_system(acer_quirks);
 484         } else if (force_series == 2490) {
 485                 quirks = &quirk_acer_travelmate_2490;
 486         }
 487
 488         if (quirks == NULL)
 489                 quirks = &quirk_unknown;
 490
 491         set_quirks();
 492 }
 493
 494 /*
 495  * General interface convenience methods
 496  */
 497
 498 static bool has_cap(u32 cap)
 499 {
 500         if ((interface->capability & cap) != 0)
 501                 return 1;
 502
 503         return 0;
 504 }
 505
 506 /*
 507  * AMW0 (V1) interface
 508  */
 509 struct wmab_args {
 510         u32 eax;
 511         u32 ebx;
 512         u32 ecx;
 513         u32 edx;
 514 };
 515
 516 struct wmab_ret {
 517         u32 eax;
 518         u32 ebx;
 519         u32 ecx;
 520         u32 edx;
 521         u32 eex;
 522 };
 523
 524 static acpi_status wmab_execute(struct wmab_args *regbuf,
 525 struct acpi_buffer *result)
 526 {
 527         struct acpi_buffer input;
 528         acpi_status status;
 529         input.length = sizeof(struct wmab_args);
 530         input.pointer = (u8 *)regbuf;
 531
 532         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
 533
 534         return status;
 535 }
 536
 537 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
 538 struct wmi_interface *iface)
 539 {
 540         int err;
 541         u8 result;
 542
 543         switch (cap) {
 544         case ACER_CAP_MAILLED:
 545                 switch (quirks->mailled) {
 546                 default:
 547                         err = ec_read(0xA, &result);
 548                         if (err)
 549                                 return AE_ERROR;
 550                         *value = (result >> 7) & 0x1;
 551                         return AE_OK;
 552                 }
 553                 break;
 554         case ACER_CAP_WIRELESS:
 555                 switch (quirks->wireless) {
 556                 case 1:
 557                         err = ec_read(0x7B, &result);
 558                         if (err)
 559                                 return AE_ERROR;
 560                         *value = result & 0x1;
 561                         return AE_OK;
 562                 case 2:
 563                         err = ec_read(0x71, &result);
 564                         if (err)
 565                                 return AE_ERROR;
 566                         *value = result & 0x1;
 567                         return AE_OK;
 568                 case 3:
 569                         err = ec_read(0x78, &result);
 570                         if (err)
 571                                 return AE_ERROR;
 572                         *value = result & 0x1;
 573                         return AE_OK;
 574                 default:
 575                         err = ec_read(0xA, &result);
 576                         if (err)
 577                                 return AE_ERROR;
 578                         *value = (result >> 2) & 0x1;
 579                         return AE_OK;
 580                 }
 581                 break;
 582         case ACER_CAP_BLUETOOTH:
 583                 switch (quirks->bluetooth) {
 584                 default:
 585                         err = ec_read(0xA, &result);
 586                         if (err)
 587                                 return AE_ERROR;
 588                         *value = (result >> 4) & 0x1;
 589                         return AE_OK;
 590                 }
 591                 break;
 592         case ACER_CAP_BRIGHTNESS:
 593                 switch (quirks->brightness) {
 594                 default:
 595                         err = ec_read(0x83, &result);
 596                         if (err)
 597                                 return AE_ERROR;
 598                         *value = result;
 599                         return AE_OK;
 600                 }
 601                 break;
 602         default:
 603                 return AE_ERROR;
 604         }
 605         return AE_OK;
 606 }
 607
 608 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
 609 {
 610         struct wmab_args args;
 611
 612         args.eax = ACER_AMW0_WRITE;
 613         args.ebx = value ? (1<<8) : 0;
 614         args.ecx = args.edx = 0;
 615
 616         switch (cap) {
 617         case ACER_CAP_MAILLED:
 618                 if (value > 1)
 619                         return AE_BAD_PARAMETER;
 620                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 621                 break;
 622         case ACER_CAP_WIRELESS:
 623                 if (value > 1)
 624                         return AE_BAD_PARAMETER;
 625                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 626                 break;
 627         case ACER_CAP_BLUETOOTH:
 628                 if (value > 1)
 629                         return AE_BAD_PARAMETER;
 630                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 631                 break;
 632         case ACER_CAP_BRIGHTNESS:
 633                 if (value > max_brightness)
 634                         return AE_BAD_PARAMETER;
 635                 switch (quirks->brightness) {
 636                 default:
 637                         return ec_write(0x83, value);
 638                         break;
 639                 }
 640         default:
 641                 return AE_ERROR;
 642         }
 643
 644         /* Actually do the set */
 645         return wmab_execute(&args, NULL);
 646 }
 647
 648 static acpi_status AMW0_find_mailled(void)
 649 {
 650         struct wmab_args args;
 651         struct wmab_ret ret;
 652         acpi_status status = AE_OK;
 653         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 654         union acpi_object *obj;
 655
 656         args.eax = 0x86;
 657         args.ebx = args.ecx = args.edx = 0;
 658
 659         status = wmab_execute(&args, &out);
 660         if (ACPI_FAILURE(status))
 661                 return status;
 662
 663         obj = (union acpi_object *) out.pointer;
 664         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 665         obj->buffer.length == sizeof(struct wmab_ret)) {
 666                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 667         } else {
 668                 kfree(out.pointer);
 669                 return AE_ERROR;
 670         }
 671
 672         if (ret.eex & 0x1)
 673                 interface->capability |= ACER_CAP_MAILLED;
 674
 675         kfree(out.pointer);
 676
 677         return AE_OK;
 678 }
 679
 680 static acpi_status AMW0_set_capabilities(void)
 681 {
 682         struct wmab_args args;
 683         struct wmab_ret ret;
 684         acpi_status status;
 685         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 686         union acpi_object *obj;
 687
 688         /*
 689          * On laptops with this strange GUID (non Acer), normal probing doesn't
 690          * work.
 691          */
 692         if (wmi_has_guid(AMW0_GUID2)) {
 693                 interface->capability |= ACER_CAP_WIRELESS;
 694                 return AE_OK;
 695         }
 696
 697         args.eax = ACER_AMW0_WRITE;
 698         args.ecx = args.edx = 0;
 699
 700         args.ebx = 0xa2 << 8;
 701         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 702
 703         status = wmab_execute(&args, &out);
 704         if (ACPI_FAILURE(status))
 705                 return status;
 706
 707         obj = out.pointer;
 708         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 709         obj->buffer.length == sizeof(struct wmab_ret)) {
 710                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 711         } else {
 712                 status = AE_ERROR;
 713                 goto out;
 714         }
 715
 716         if (ret.eax & 0x1)
 717                 interface->capability |= ACER_CAP_WIRELESS;
 718
 719         args.ebx = 2 << 8;
 720         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 721
 722         /*
 723          * It's ok to use existing buffer for next wmab_execute call.
 724          * But we need to kfree(out.pointer) if next wmab_execute fail.
 725          */
 726         status = wmab_execute(&args, &out);
 727         if (ACPI_FAILURE(status))
 728                 goto out;
 729
 730         obj = (union acpi_object *) out.pointer;
 731         if (obj && obj->type == ACPI_TYPE_BUFFER
 732         && obj->buffer.length == sizeof(struct wmab_ret)) {
 733                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 734         } else {
 735                 status = AE_ERROR;
 736                 goto out;
 737         }
 738
 739         if (ret.eax & 0x1)
 740                 interface->capability |= ACER_CAP_BLUETOOTH;
 741
 742         /*
 743          * This appears to be safe to enable, since all Wistron based laptops
 744          * appear to use the same EC register for brightness, even if they
 745          * differ for wireless, etc
 746          */
 747         if (quirks->brightness >= 0)
 748                 interface->capability |= ACER_CAP_BRIGHTNESS;
 749
 750         status = AE_OK;
 751 out:
 752         kfree(out.pointer);
 753         return status;
 754 }
 755
 756 static struct wmi_interface AMW0_interface = {
 757         .type = ACER_AMW0,
 758 };
 759
 760 static struct wmi_interface AMW0_V2_interface = {
 761         .type = ACER_AMW0_V2,
 762 };
 763
 764 /*
 765  * New interface (The WMID interface)
 766  */
 767 static acpi_status
 768 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 769 {
 770         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 771         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 772         union acpi_object *obj;
 773         u32 tmp;
 774         acpi_status status;
 775
 776         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 777
 778         if (ACPI_FAILURE(status))
 779                 return status;
 780
 781         obj = (union acpi_object *) result.pointer;
 782         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 783                 (obj->buffer.length == sizeof(u32) ||
 784                 obj->buffer.length == sizeof(u64))) {
 785                 tmp = *((u32 *) obj->buffer.pointer);
 786         } else if (obj->type == ACPI_TYPE_INTEGER) {
 787                 tmp = (u32) obj->integer.value;
 788         } else {
 789                 tmp = 0;
 790         }
 791
 792         if (out)
 793                 *out = tmp;
 794
 795         kfree(result.pointer);
 796
 797         return status;
 798 }
 799
 800 static acpi_status WMID_get_u32(u32 *value, u32 cap,
 801 struct wmi_interface *iface)
 802 {
 803         acpi_status status;
 804         u8 tmp;
 805         u32 result, method_id = 0;
 806
 807         switch (cap) {
 808         case ACER_CAP_WIRELESS:
 809                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 810                 break;
 811         case ACER_CAP_BLUETOOTH:
 812                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 813                 break;
 814         case ACER_CAP_BRIGHTNESS:
 815                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 816                 break;
 817         case ACER_CAP_THREEG:
 818                 method_id = ACER_WMID_GET_THREEG_METHODID;
 819                 break;
 820         case ACER_CAP_MAILLED:
 821                 if (quirks->mailled == 1) {
 822                         ec_read(0x9f, &tmp);
 823                         *value = tmp & 0x1;
 824                         return 0;
 825                 }
 826         default:
 827                 return AE_ERROR;
 828         }
 829         status = WMI_execute_u32(method_id, 0, &result);
 830
 831         if (ACPI_SUCCESS(status))
 832                 *value = (u8)result;
 833
 834         return status;
 835 }
 836
 837 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
 838 {
 839         u32 method_id = 0;
 840         char param;
 841
 842         switch (cap) {
 843         case ACER_CAP_BRIGHTNESS:
 844                 if (value > max_brightness)
 845                         return AE_BAD_PARAMETER;
 846                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
 847                 break;
 848         case ACER_CAP_WIRELESS:
 849                 if (value > 1)
 850                         return AE_BAD_PARAMETER;
 851                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
 852                 break;
 853         case ACER_CAP_BLUETOOTH:
 854                 if (value > 1)
 855                         return AE_BAD_PARAMETER;
 856                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
 857                 break;
 858         case ACER_CAP_THREEG:
 859                 if (value > 1)
 860                         return AE_BAD_PARAMETER;
 861                 method_id = ACER_WMID_SET_THREEG_METHODID;
 862                 break;
 863         case ACER_CAP_MAILLED:
 864                 if (value > 1)
 865                         return AE_BAD_PARAMETER;
 866                 if (quirks->mailled == 1) {
 867                         param = value ? 0x92 : 0x93;
 868                         i8042_lock_chip();
 869                         i8042_command(&param, 0x1059);
 870                         i8042_unlock_chip();
 871                         return 0;
 872                 }
 873                 break;
 874         default:
 875                 return AE_ERROR;
 876         }
 877         return WMI_execute_u32(method_id, (u32)value, NULL);
 878 }
 879
 880 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
 881 {
 882         struct hotkey_function_type_aa *type_aa;
 883
 884         /* We are looking for OEM-specific Type AAh */
 885         if (header->type != 0xAA)
 886                 return;
 887
 888         has_type_aa = true;
 889         type_aa = (struct hotkey_function_type_aa *) header;
 890
 891         pr_info("Function bitmap for Communication Button: 0x%x\n",
 892                 type_aa->commun_func_bitmap);
 893
 894         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
 895                 interface->capability |= ACER_CAP_WIRELESS;
 896         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
 897                 interface->capability |= ACER_CAP_THREEG;
 898         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
 899                 interface->capability |= ACER_CAP_BLUETOOTH;
 900 }
 901
 902 static acpi_status WMID_set_capabilities(void)
 903 {
 904         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
 905         union acpi_object *obj;
 906         acpi_status status;
 907         u32 devices;
 908
 909         status = wmi_query_block(WMID_GUID2, 1, &out);
 910         if (ACPI_FAILURE(status))
 911                 return status;
 912
 913         obj = (union acpi_object *) out.pointer;
 914         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 915                 (obj->buffer.length == sizeof(u32) ||
 916                 obj->buffer.length == sizeof(u64))) {
 917                 devices = *((u32 *) obj->buffer.pointer);
 918         } else if (obj->type == ACPI_TYPE_INTEGER) {
 919                 devices = (u32) obj->integer.value;
 920         } else {
 921                 kfree(out.pointer);
 922                 return AE_ERROR;
 923         }
 924
 925         dmi_walk(type_aa_dmi_decode, NULL);
 926         if (!has_type_aa) {
 927                 interface->capability |= ACER_CAP_WIRELESS;
 928                 if (devices & 0x40)
 929                         interface->capability |= ACER_CAP_THREEG;
 930                 if (devices & 0x10)
 931                         interface->capability |= ACER_CAP_BLUETOOTH;
 932         }
 933
 934         /* WMID always provides brightness methods */
 935         interface->capability |= ACER_CAP_BRIGHTNESS;
 936
 937         if (!(devices & 0x20))
 938                 max_brightness = 0x9;
 939
 940         kfree(out.pointer);
 941         return status;
 942 }
 943
 944 static struct wmi_interface wmid_interface = {
 945         .type = ACER_WMID,
 946 };
 947
 948 /*
 949  * Generic Device (interface-independent)
 950  */
 951
 952 static acpi_status get_u32(u32 *value, u32 cap)
 953 {
 954         acpi_status status = AE_ERROR;
 955
 956         switch (interface->type) {
 957         case ACER_AMW0:
 958                 status = AMW0_get_u32(value, cap, interface);
 959                 break;
 960         case ACER_AMW0_V2:
 961                 if (cap == ACER_CAP_MAILLED) {
 962                         status = AMW0_get_u32(value, cap, interface);
 963                         break;
 964                 }
 965         case ACER_WMID:
 966                 status = WMID_get_u32(value, cap, interface);
 967                 break;
 968         }
 969
 970         return status;
 971 }
 972
 973 static acpi_status set_u32(u32 value, u32 cap)
 974 {
 975         acpi_status status;
 976
 977         if (interface->capability & cap) {
 978                 switch (interface->type) {
 979                 case ACER_AMW0:
 980                         return AMW0_set_u32(value, cap, interface);
 981                 case ACER_AMW0_V2:
 982                         if (cap == ACER_CAP_MAILLED)
 983                                 return AMW0_set_u32(value, cap, interface);
 984
 985                         /*
 986                          * On some models, some WMID methods don't toggle
 987                          * properly. For those cases, we want to run the AMW0
 988                          * method afterwards to be certain we've really toggled
 989                          * the device state.
 990                          */
 991                         if (cap == ACER_CAP_WIRELESS ||
 992                                 cap == ACER_CAP_BLUETOOTH) {
 993                                 status = WMID_set_u32(value, cap, interface);
 994                                 if (ACPI_FAILURE(status))
 995                                         return status;
 996
 997                                 return AMW0_set_u32(value, cap, interface);
 998                         }
 999                 case ACER_WMID:
1000                         return WMID_set_u32(value, cap, interface);
1001                 default:
1002                         return AE_BAD_PARAMETER;
1003                 }
1004         }
1005         return AE_BAD_PARAMETER;
1006 }
1007
1008 static void __init acer_commandline_init(void)
1009 {
1010         /*
1011          * These will all fail silently if the value given is invalid, or the
1012          * capability isn't available on the given interface
1013          */
1014         if (mailled >= 0)
1015                 set_u32(mailled, ACER_CAP_MAILLED);
1016         if (!has_type_aa && threeg >= 0)
1017                 set_u32(threeg, ACER_CAP_THREEG);
1018         if (brightness >= 0)
1019                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1020 }
1021
1022 /*
1023  * LED device (Mail LED only, no other LEDs known yet)
1024  */
1025 static void mail_led_set(struct led_classdev *led_cdev,
1026 enum led_brightness value)
1027 {
1028         set_u32(value, ACER_CAP_MAILLED);
1029 }
1030
1031 static struct led_classdev mail_led = {
1032         .name = "acer-wmi::mail",
1033         .brightness_set = mail_led_set,
1034 };
1035
1036 static int __devinit acer_led_init(struct device *dev)
1037 {
1038         return led_classdev_register(dev, &mail_led);
1039 }
1040
1041 static void acer_led_exit(void)
1042 {
1043         set_u32(LED_OFF, ACER_CAP_MAILLED);
1044         led_classdev_unregister(&mail_led);
1045 }
1046
1047 /*
1048  * Backlight device
1049  */
1050 static struct backlight_device *acer_backlight_device;
1051
1052 static int read_brightness(struct backlight_device *bd)
1053 {
1054         u32 value;
1055         get_u32(&value, ACER_CAP_BRIGHTNESS);
1056         return value;
1057 }
1058
1059 static int update_bl_status(struct backlight_device *bd)
1060 {
1061         int intensity = bd->props.brightness;
1062
1063         if (bd->props.power != FB_BLANK_UNBLANK)
1064                 intensity = 0;
1065         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1066                 intensity = 0;
1067
1068         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1069
1070         return 0;
1071 }
1072
1073 static const struct backlight_ops acer_bl_ops = {
1074         .get_brightness = read_brightness,
1075         .update_status = update_bl_status,
1076 };
1077
1078 static int __devinit acer_backlight_init(struct device *dev)
1079 {
1080         struct backlight_properties props;
1081         struct backlight_device *bd;
1082
1083         memset(&props, 0, sizeof(struct backlight_properties));
1084         props.type = BACKLIGHT_PLATFORM;
1085         props.max_brightness = max_brightness;
1086         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1087                                        &props);
1088         if (IS_ERR(bd)) {
1089                 pr_err("Could not register Acer backlight device\n");
1090                 acer_backlight_device = NULL;
1091                 return PTR_ERR(bd);
1092         }
1093
1094         acer_backlight_device = bd;
1095
1096         bd->props.power = FB_BLANK_UNBLANK;
1097         bd->props.brightness = read_brightness(bd);
1098         backlight_update_status(bd);
1099         return 0;
1100 }
1101
1102 static void acer_backlight_exit(void)
1103 {
1104         backlight_device_unregister(acer_backlight_device);
1105 }
1106
1107 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1108 {
1109         struct wmid3_gds_return_value return_value;
1110         acpi_status status;
1111         union acpi_object *obj;
1112         struct wmid3_gds_input_param params = {
1113                 .function_num = 0x1,
1114                 .hotkey_number = 0x01,
1115                 .devices = device,
1116         };
1117         struct acpi_buffer input = {
1118                 sizeof(struct wmid3_gds_input_param),
1119                 &params
1120         };
1121         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1122
1123         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1124         if (ACPI_FAILURE(status))
1125                 return status;
1126
1127         obj = output.pointer;
1128
1129         if (!obj)
1130                 return AE_ERROR;
1131         else if (obj->type != ACPI_TYPE_BUFFER) {
1132                 kfree(obj);
1133                 return AE_ERROR;
1134         }
1135         if (obj->buffer.length != 8) {
1136                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1137                 kfree(obj);
1138                 return AE_ERROR;
1139         }
1140
1141         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1142         kfree(obj);
1143
1144         if (return_value.error_code || return_value.ec_return_value)
1145                 pr_warn("Get Device Status failed: 0x%x - 0x%x\n",
1146                         return_value.error_code,
1147                         return_value.ec_return_value);
1148         else
1149                 *value = !!(return_value.devices & device);
1150
1151         return status;
1152 }
1153
1154 static acpi_status get_device_status(u32 *value, u32 cap)
1155 {
1156         if (wmi_has_guid(WMID_GUID3)) {
1157                 u16 device;
1158
1159                 switch (cap) {
1160                 case ACER_CAP_WIRELESS:
1161                         device = ACER_WMID3_GDS_WIRELESS;
1162                         break;
1163                 case ACER_CAP_BLUETOOTH:
1164                         device = ACER_WMID3_GDS_BLUETOOTH;
1165                         break;
1166                 case ACER_CAP_THREEG:
1167                         device = ACER_WMID3_GDS_THREEG;
1168                         break;
1169                 default:
1170                         return AE_ERROR;
1171                 }
1172                 return wmid3_get_device_status(value, device);
1173
1174         } else {
1175                 return get_u32(value, cap);
1176         }
1177 }
1178
1179 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1180 {
1181         struct wmid3_gds_return_value return_value;
1182         acpi_status status;
1183         union acpi_object *obj;
1184         u16 devices;
1185         struct wmid3_gds_input_param params = {
1186                 .function_num = 0x1,
1187                 .hotkey_number = 0x01,
1188                 .devices = ACER_WMID3_GDS_WIRELESS |
1189                                 ACER_WMID3_GDS_THREEG |
1190                                 ACER_WMID3_GDS_WIMAX |
1191                                 ACER_WMID3_GDS_BLUETOOTH,
1192         };
1193         struct acpi_buffer input = {
1194                 sizeof(struct wmid3_gds_input_param),
1195                 &params
1196         };
1197         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1198         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1199
1200         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1201         if (ACPI_FAILURE(status))
1202                 return status;
1203
1204         obj = output.pointer;
1205
1206         if (!obj)
1207                 return AE_ERROR;
1208         else if (obj->type != ACPI_TYPE_BUFFER) {
1209                 kfree(obj);
1210                 return AE_ERROR;
1211         }
1212         if (obj->buffer.length != 8) {
1213                 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1214                 kfree(obj);
1215                 return AE_ERROR;
1216         }
1217
1218         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1219         kfree(obj);
1220
1221         if (return_value.error_code || return_value.ec_return_value) {
1222                 pr_warning("Get Current Device Status failed: "
1223                         "0x%x - 0x%x\n", return_value.error_code,
1224                         return_value.ec_return_value);
1225                 return status;
1226         }
1227
1228         devices = return_value.devices;
1229         params.function_num = 0x2;
1230         params.hotkey_number = 0x01;
1231         params.devices = (value) ? (devices | device) : (devices & ~device);
1232
1233         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
1234         if (ACPI_FAILURE(status))
1235                 return status;
1236
1237         obj = output2.pointer;
1238
1239         if (!obj)
1240                 return AE_ERROR;
1241         else if (obj->type != ACPI_TYPE_BUFFER) {
1242                 kfree(obj);
1243                 return AE_ERROR;
1244         }
1245         if (obj->buffer.length != 4) {
1246                 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1247                 kfree(obj);
1248                 return AE_ERROR;
1249         }
1250
1251         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1252         kfree(obj);
1253
1254         if (return_value.error_code || return_value.ec_return_value)
1255                 pr_warning("Set Device Status failed: "
1256                         "0x%x - 0x%x\n", return_value.error_code,
1257                         return_value.ec_return_value);
1258
1259         return status;
1260 }
1261
1262 static acpi_status set_device_status(u32 value, u32 cap)
1263 {
1264         if (wmi_has_guid(WMID_GUID3)) {
1265                 u16 device;
1266
1267                 switch (cap) {
1268                 case ACER_CAP_WIRELESS:
1269                         device = ACER_WMID3_GDS_WIRELESS;
1270                         break;
1271                 case ACER_CAP_BLUETOOTH:
1272                         device = ACER_WMID3_GDS_BLUETOOTH;
1273                         break;
1274                 case ACER_CAP_THREEG:
1275                         device = ACER_WMID3_GDS_THREEG;
1276                         break;
1277                 default:
1278                         return AE_ERROR;
1279                 }
1280                 return wmid3_set_device_status(value, device);
1281
1282         } else {
1283                 return set_u32(value, cap);
1284         }
1285 }
1286
1287 /*
1288  * Rfkill devices
1289  */
1290 static void acer_rfkill_update(struct work_struct *ignored);
1291 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1292 static void acer_rfkill_update(struct work_struct *ignored)
1293 {
1294         u32 state;
1295         acpi_status status;
1296
1297         status = get_u32(&state, ACER_CAP_WIRELESS);
1298         if (ACPI_SUCCESS(status)) {
1299                 if (quirks->wireless == 3) {
1300                         rfkill_set_hw_state(wireless_rfkill, !state);
1301                 } else {
1302                         rfkill_set_sw_state(wireless_rfkill, !state);
1303                 }
1304         }
1305
1306         if (has_cap(ACER_CAP_BLUETOOTH)) {
1307                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1308                 if (ACPI_SUCCESS(status))
1309                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1310         }
1311
1312         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1313                 status = wmid3_get_device_status(&state,
1314                                 ACER_WMID3_GDS_THREEG);
1315                 if (ACPI_SUCCESS(status))
1316                         rfkill_set_sw_state(threeg_rfkill, !state);
1317         }
1318
1319         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1320 }
1321
1322 static int acer_rfkill_set(void *data, bool blocked)
1323 {
1324         acpi_status status;
1325         u32 cap = (unsigned long)data;
1326
1327         if (rfkill_inited) {
1328                 status = set_device_status(!blocked, cap);
1329                 if (ACPI_FAILURE(status))
1330                         return -ENODEV;
1331         }
1332
1333         return 0;
1334 }
1335
1336 static const struct rfkill_ops acer_rfkill_ops = {
1337         .set_block = acer_rfkill_set,
1338 };
1339
1340 static struct rfkill *acer_rfkill_register(struct device *dev,
1341                                            enum rfkill_type type,
1342                                            char *name, u32 cap)
1343 {
1344         int err;
1345         struct rfkill *rfkill_dev;
1346         u32 state;
1347         acpi_status status;
1348
1349         rfkill_dev = rfkill_alloc(name, dev, type,
1350                                   &acer_rfkill_ops,
1351                                   (void *)(unsigned long)cap);
1352         if (!rfkill_dev)
1353                 return ERR_PTR(-ENOMEM);
1354
1355         status = get_device_status(&state, cap);
1356
1357         err = rfkill_register(rfkill_dev);
1358         if (err) {
1359                 rfkill_destroy(rfkill_dev);
1360                 return ERR_PTR(err);
1361         }
1362
1363         if (ACPI_SUCCESS(status))
1364                 rfkill_set_sw_state(rfkill_dev, !state);
1365
1366         return rfkill_dev;
1367 }
1368
1369 static int acer_rfkill_init(struct device *dev)
1370 {
1371         wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1372                 "acer-wireless", ACER_CAP_WIRELESS);
1373         if (IS_ERR(wireless_rfkill))
1374                 return PTR_ERR(wireless_rfkill);
1375
1376         if (has_cap(ACER_CAP_BLUETOOTH)) {
1377                 bluetooth_rfkill = acer_rfkill_register(dev,
1378                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1379                         ACER_CAP_BLUETOOTH);
1380                 if (IS_ERR(bluetooth_rfkill)) {
1381                         rfkill_unregister(wireless_rfkill);
1382                         rfkill_destroy(wireless_rfkill);
1383                         return PTR_ERR(bluetooth_rfkill);
1384                 }
1385         }
1386
1387         if (has_cap(ACER_CAP_THREEG)) {
1388                 threeg_rfkill = acer_rfkill_register(dev,
1389                         RFKILL_TYPE_WWAN, "acer-threeg",
1390                         ACER_CAP_THREEG);
1391                 if (IS_ERR(threeg_rfkill)) {
1392                         rfkill_unregister(wireless_rfkill);
1393                         rfkill_destroy(wireless_rfkill);
1394                         rfkill_unregister(bluetooth_rfkill);
1395                         rfkill_destroy(bluetooth_rfkill);
1396                         return PTR_ERR(threeg_rfkill);
1397                 }
1398         }
1399
1400         rfkill_inited = true;
1401
1402         if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1403                 schedule_delayed_work(&acer_rfkill_work,
1404                         round_jiffies_relative(HZ));
1405
1406         return 0;
1407 }
1408
1409 static void acer_rfkill_exit(void)
1410 {
1411         if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1412                 cancel_delayed_work_sync(&acer_rfkill_work);
1413
1414         rfkill_unregister(wireless_rfkill);
1415         rfkill_destroy(wireless_rfkill);
1416
1417         if (has_cap(ACER_CAP_BLUETOOTH)) {
1418                 rfkill_unregister(bluetooth_rfkill);
1419                 rfkill_destroy(bluetooth_rfkill);
1420         }
1421
1422         if (has_cap(ACER_CAP_THREEG)) {
1423                 rfkill_unregister(threeg_rfkill);
1424                 rfkill_destroy(threeg_rfkill);
1425         }
1426         return;
1427 }
1428
1429 /*
1430  * sysfs interface
1431  */
1432 static ssize_t show_bool_threeg(struct device *dev,
1433         struct device_attribute *attr, char *buf)
1434 {
1435         u32 result; \
1436         acpi_status status;
1437
1438         pr_info("This threeg sysfs will be removed in 2012"
1439                 " - used by: %s\n", current->comm);
1440         if (wmi_has_guid(WMID_GUID3))
1441                 status = wmid3_get_device_status(&result,
1442                                 ACER_WMID3_GDS_THREEG);
1443         else
1444                 status = get_u32(&result, ACER_CAP_THREEG);
1445         if (ACPI_SUCCESS(status))
1446                 return sprintf(buf, "%u\n", result);
1447         return sprintf(buf, "Read error\n");
1448 }
1449
1450 static ssize_t set_bool_threeg(struct device *dev,
1451         struct device_attribute *attr, const char *buf, size_t count)
1452 {
1453         u32 tmp = simple_strtoul(buf, NULL, 10);
1454         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1455         pr_info("This threeg sysfs will be removed in 2012"
1456                 " - used by: %s\n", current->comm);
1457         if (ACPI_FAILURE(status))
1458                 return -EINVAL;
1459         return count;
1460 }
1461 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1462         set_bool_threeg);
1463
1464 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1465         char *buf)
1466 {
1467         pr_info("This interface sysfs will be removed in 2012"
1468                 " - used by: %s\n", current->comm);
1469         switch (interface->type) {
1470         case ACER_AMW0:
1471                 return sprintf(buf, "AMW0\n");
1472         case ACER_AMW0_V2:
1473                 return sprintf(buf, "AMW0 v2\n");
1474         case ACER_WMID:
1475                 return sprintf(buf, "WMID\n");
1476         default:
1477                 return sprintf(buf, "Error!\n");
1478         }
1479 }
1480
1481 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1482
1483 static void acer_wmi_notify(u32 value, void *context)
1484 {
1485         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1486         union acpi_object *obj;
1487         struct event_return_value return_value;
1488         acpi_status status;
1489         u16 device_state;
1490         const struct key_entry *key;
1491
1492         status = wmi_get_event_data(value, &response);
1493         if (status != AE_OK) {
1494                 pr_warn("bad event status 0x%x\n", status);
1495                 return;
1496         }
1497
1498         obj = (union acpi_object *)response.pointer;
1499
1500         if (!obj)
1501                 return;
1502         if (obj->type != ACPI_TYPE_BUFFER) {
1503                 pr_warn("Unknown response received %d\n", obj->type);
1504                 kfree(obj);
1505                 return;
1506         }
1507         if (obj->buffer.length != 8) {
1508                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1509                 kfree(obj);
1510                 return;
1511         }
1512
1513         return_value = *((struct event_return_value *)obj->buffer.pointer);
1514         kfree(obj);
1515
1516         switch (return_value.function) {
1517         case WMID_HOTKEY_EVENT:
1518                 device_state = return_value.device_state;
1519                 pr_debug("device state: 0x%x\n", device_state);
1520
1521                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1522                                                         return_value.key_num);
1523                 if (!key) {
1524                         pr_warn("Unknown key number - 0x%x\n",
1525                                 return_value.key_num);
1526                 } else {
1527                         switch (key->keycode) {
1528                         case KEY_WLAN:
1529                         case KEY_BLUETOOTH:
1530                                 if (has_cap(ACER_CAP_WIRELESS))
1531                                         rfkill_set_sw_state(wireless_rfkill,
1532                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1533                                 if (has_cap(ACER_CAP_THREEG))
1534                                         rfkill_set_sw_state(threeg_rfkill,
1535                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1536                                 if (has_cap(ACER_CAP_BLUETOOTH))
1537                                         rfkill_set_sw_state(bluetooth_rfkill,
1538                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1539                                 break;
1540                         }
1541                         sparse_keymap_report_entry(acer_wmi_input_dev, key,
1542                                                    1, true);
1543                 }
1544                 break;
1545         default:
1546                 pr_warn("Unknown function number - %d - %d\n",
1547                         return_value.function, return_value.key_num);
1548                 break;
1549         }
1550 }
1551
1552 static acpi_status
1553 wmid3_set_lm_mode(struct lm_input_params *params,
1554                   struct lm_return_value *return_value)
1555 {
1556         acpi_status status;
1557         union acpi_object *obj;
1558
1559         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1560         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1561
1562         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1563         if (ACPI_FAILURE(status))
1564                 return status;
1565
1566         obj = output.pointer;
1567
1568         if (!obj)
1569                 return AE_ERROR;
1570         else if (obj->type != ACPI_TYPE_BUFFER) {
1571                 kfree(obj);
1572                 return AE_ERROR;
1573         }
1574         if (obj->buffer.length != 4) {
1575                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1576                 kfree(obj);
1577                 return AE_ERROR;
1578         }
1579
1580         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1581         kfree(obj);
1582
1583         return status;
1584 }
1585
1586 static int acer_wmi_enable_ec_raw(void)
1587 {
1588         struct lm_return_value return_value;
1589         acpi_status status;
1590         struct lm_input_params params = {
1591                 .function_num = 0x1,
1592                 .commun_devices = 0xFFFF,
1593                 .devices = 0xFFFF,
1594                 .lm_status = 0x00,            /* Launch Manager Deactive */
1595         };
1596
1597         status = wmid3_set_lm_mode(&params, &return_value);
1598
1599         if (return_value.error_code || return_value.ec_return_value)
1600                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1601                         return_value.error_code,
1602                         return_value.ec_return_value);
1603         else
1604                 pr_info("Enabled EC raw mode\n");
1605
1606         return status;
1607 }
1608
1609 static int acer_wmi_enable_lm(void)
1610 {
1611         struct lm_return_value return_value;
1612         acpi_status status;
1613         struct lm_input_params params = {
1614                 .function_num = 0x1,
1615                 .commun_devices = 0xFFFF,
1616                 .devices = 0xFFFF,
1617                 .lm_status = 0x01,            /* Launch Manager Active */
1618         };
1619
1620         status = wmid3_set_lm_mode(&params, &return_value);
1621
1622         if (return_value.error_code || return_value.ec_return_value)
1623                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1624                         return_value.error_code,
1625                         return_value.ec_return_value);
1626
1627         return status;
1628 }
1629
1630 static int __init acer_wmi_input_setup(void)
1631 {
1632         acpi_status status;
1633         int err;
1634
1635         acer_wmi_input_dev = input_allocate_device();
1636         if (!acer_wmi_input_dev)
1637                 return -ENOMEM;
1638
1639         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1640         acer_wmi_input_dev->phys = "wmi/input0";
1641         acer_wmi_input_dev->id.bustype = BUS_HOST;
1642
1643         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1644         if (err)
1645                 goto err_free_dev;
1646
1647         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1648                                                 acer_wmi_notify, NULL);
1649         if (ACPI_FAILURE(status)) {
1650                 err = -EIO;
1651                 goto err_free_keymap;
1652         }
1653
1654         err = input_register_device(acer_wmi_input_dev);
1655         if (err)
1656                 goto err_uninstall_notifier;
1657
1658         return 0;
1659
1660 err_uninstall_notifier:
1661         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1662 err_free_keymap:
1663         sparse_keymap_free(acer_wmi_input_dev);
1664 err_free_dev:
1665         input_free_device(acer_wmi_input_dev);
1666         return err;
1667 }
1668
1669 static void acer_wmi_input_destroy(void)
1670 {
1671         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1672         sparse_keymap_free(acer_wmi_input_dev);
1673         input_unregister_device(acer_wmi_input_dev);
1674 }
1675
1676 /*
1677  * debugfs functions
1678  */
1679 static u32 get_wmid_devices(void)
1680 {
1681         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1682         union acpi_object *obj;
1683         acpi_status status;
1684         u32 devices = 0;
1685
1686         status = wmi_query_block(WMID_GUID2, 1, &out);
1687         if (ACPI_FAILURE(status))
1688                 return 0;
1689
1690         obj = (union acpi_object *) out.pointer;
1691         if (obj && obj->type == ACPI_TYPE_BUFFER &&
1692                 (obj->buffer.length == sizeof(u32) ||
1693                 obj->buffer.length == sizeof(u64))) {
1694                 devices = *((u32 *) obj->buffer.pointer);
1695         } else if (obj->type == ACPI_TYPE_INTEGER) {
1696                 devices = (u32) obj->integer.value;
1697         }
1698
1699         kfree(out.pointer);
1700         return devices;
1701 }
1702
1703 /*
1704  * Platform device
1705  */
1706 static int __devinit acer_platform_probe(struct platform_device *device)
1707 {
1708         int err;
1709
1710         if (has_cap(ACER_CAP_MAILLED)) {
1711                 err = acer_led_init(&device->dev);
1712                 if (err)
1713                         goto error_mailled;
1714         }
1715
1716         if (has_cap(ACER_CAP_BRIGHTNESS)) {
1717                 err = acer_backlight_init(&device->dev);
1718                 if (err)
1719                         goto error_brightness;
1720         }
1721
1722         err = acer_rfkill_init(&device->dev);
1723         if (err)
1724                 goto error_rfkill;
1725
1726         return err;
1727
1728 error_rfkill:
1729         if (has_cap(ACER_CAP_BRIGHTNESS))
1730                 acer_backlight_exit();
1731 error_brightness:
1732         if (has_cap(ACER_CAP_MAILLED))
1733                 acer_led_exit();
1734 error_mailled:
1735         return err;
1736 }
1737
1738 static int acer_platform_remove(struct platform_device *device)
1739 {
1740         if (has_cap(ACER_CAP_MAILLED))
1741                 acer_led_exit();
1742         if (has_cap(ACER_CAP_BRIGHTNESS))
1743                 acer_backlight_exit();
1744
1745         acer_rfkill_exit();
1746         return 0;
1747 }
1748
1749 static int acer_platform_suspend(struct platform_device *dev,
1750 pm_message_t state)
1751 {
1752         u32 value;
1753         struct acer_data *data = &interface->data;
1754
1755         if (!data)
1756                 return -ENOMEM;
1757
1758         if (has_cap(ACER_CAP_MAILLED)) {
1759                 get_u32(&value, ACER_CAP_MAILLED);
1760                 set_u32(LED_OFF, ACER_CAP_MAILLED);
1761                 data->mailled = value;
1762         }
1763
1764         if (has_cap(ACER_CAP_BRIGHTNESS)) {
1765                 get_u32(&value, ACER_CAP_BRIGHTNESS);
1766                 data->brightness = value;
1767         }
1768
1769         return 0;
1770 }
1771
1772 static int acer_platform_resume(struct platform_device *device)
1773 {
1774         struct acer_data *data = &interface->data;
1775
1776         if (!data)
1777                 return -ENOMEM;
1778
1779         if (has_cap(ACER_CAP_MAILLED))
1780                 set_u32(data->mailled, ACER_CAP_MAILLED);
1781
1782         if (has_cap(ACER_CAP_BRIGHTNESS))
1783                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1784
1785         return 0;
1786 }
1787
1788 static void acer_platform_shutdown(struct platform_device *device)
1789 {
1790         struct acer_data *data = &interface->data;
1791
1792         if (!data)
1793                 return;
1794
1795         if (has_cap(ACER_CAP_MAILLED))
1796                 set_u32(LED_OFF, ACER_CAP_MAILLED);
1797 }
1798
1799 static struct platform_driver acer_platform_driver = {
1800         .driver = {
1801                 .name = "acer-wmi",
1802                 .owner = THIS_MODULE,
1803         },
1804         .probe = acer_platform_probe,
1805         .remove = acer_platform_remove,
1806         .suspend = acer_platform_suspend,
1807         .resume = acer_platform_resume,
1808         .shutdown = acer_platform_shutdown,
1809 };
1810
1811 static struct platform_device *acer_platform_device;
1812
1813 static int remove_sysfs(struct platform_device *device)
1814 {
1815         if (has_cap(ACER_CAP_THREEG))
1816                 device_remove_file(&device->dev, &dev_attr_threeg);
1817
1818         device_remove_file(&device->dev, &dev_attr_interface);
1819
1820         return 0;
1821 }
1822
1823 static int create_sysfs(void)
1824 {
1825         int retval = -ENOMEM;
1826
1827         if (has_cap(ACER_CAP_THREEG)) {
1828                 retval = device_create_file(&acer_platform_device->dev,
1829                         &dev_attr_threeg);
1830                 if (retval)
1831                         goto error_sysfs;
1832         }
1833
1834         retval = device_create_file(&acer_platform_device->dev,
1835                 &dev_attr_interface);
1836         if (retval)
1837                 goto error_sysfs;
1838
1839         return 0;
1840
1841 error_sysfs:
1842                 remove_sysfs(acer_platform_device);
1843         return retval;
1844 }
1845
1846 static void remove_debugfs(void)
1847 {
1848         debugfs_remove(interface->debug.devices);
1849         debugfs_remove(interface->debug.root);
1850 }
1851
1852 static int create_debugfs(void)
1853 {
1854         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1855         if (!interface->debug.root) {
1856                 pr_err("Failed to create debugfs directory");
1857                 return -ENOMEM;
1858         }
1859
1860         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1861                                         interface->debug.root,
1862                                         &interface->debug.wmid_devices);
1863         if (!interface->debug.devices)
1864                 goto error_debugfs;
1865
1866         return 0;
1867
1868 error_debugfs:
1869         remove_debugfs();
1870         return -ENOMEM;
1871 }
1872
1873 static int __init acer_wmi_init(void)
1874 {
1875         int err;
1876
1877         pr_info("Acer Laptop ACPI-WMI Extras\n");
1878
1879         if (dmi_check_system(acer_blacklist)) {
1880                 pr_info("Blacklisted hardware detected - not loading\n");
1881                 return -ENODEV;
1882         }
1883
1884         find_quirks();
1885
1886         /*
1887          * Detect which ACPI-WMI interface we're using.
1888          */
1889         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1890                 interface = &AMW0_V2_interface;
1891
1892         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1893                 interface = &wmid_interface;
1894
1895         if (wmi_has_guid(WMID_GUID2) && interface) {
1896                 if (ACPI_FAILURE(WMID_set_capabilities())) {
1897                         pr_err("Unable to detect available WMID devices\n");
1898                         return -ENODEV;
1899                 }
1900         } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1901                 pr_err("No WMID device detection method found\n");
1902                 return -ENODEV;
1903         }
1904
1905         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1906                 interface = &AMW0_interface;
1907
1908                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1909                         pr_err("Unable to detect available AMW0 devices\n");
1910                         return -ENODEV;
1911                 }
1912         }
1913
1914         if (wmi_has_guid(AMW0_GUID1))
1915                 AMW0_find_mailled();
1916
1917         if (!interface) {
1918                 pr_err("No or unsupported WMI interface, unable to load\n");
1919                 return -ENODEV;
1920         }
1921
1922         set_quirks();
1923
1924         if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1925                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1926                 pr_info("Brightness must be controlled by "
1927                        "generic video driver\n");
1928         }
1929
1930         if (wmi_has_guid(WMID_GUID3)) {
1931                 if (ec_raw_mode) {
1932                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1933                                 pr_err("Cannot enable EC raw mode\n");
1934                                 return -ENODEV;
1935                         }
1936                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1937                         pr_err("Cannot enable Launch Manager mode\n");
1938                         return -ENODEV;
1939                 }
1940         } else if (ec_raw_mode) {
1941                 pr_info("No WMID EC raw mode enable method\n");
1942         }
1943
1944         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1945                 err = acer_wmi_input_setup();
1946                 if (err)
1947                         return err;
1948         }
1949
1950         err = platform_driver_register(&acer_platform_driver);
1951         if (err) {
1952                 pr_err("Unable to register platform driver.\n");
1953                 goto error_platform_register;
1954         }
1955
1956         acer_platform_device = platform_device_alloc("acer-wmi", -1);
1957         if (!acer_platform_device) {
1958                 err = -ENOMEM;
1959                 goto error_device_alloc;
1960         }
1961
1962         err = platform_device_add(acer_platform_device);
1963         if (err)
1964                 goto error_device_add;
1965
1966         err = create_sysfs();
1967         if (err)
1968                 goto error_create_sys;
1969
1970         if (wmi_has_guid(WMID_GUID2)) {
1971                 interface->debug.wmid_devices = get_wmid_devices();
1972                 err = create_debugfs();
1973                 if (err)
1974                         goto error_create_debugfs;
1975         }
1976
1977         /* Override any initial settings with values from the commandline */
1978         acer_commandline_init();
1979
1980         return 0;
1981
1982 error_create_debugfs:
1983         remove_sysfs(acer_platform_device);
1984 error_create_sys:
1985         platform_device_del(acer_platform_device);
1986 error_device_add:
1987         platform_device_put(acer_platform_device);
1988 error_device_alloc:
1989         platform_driver_unregister(&acer_platform_driver);
1990 error_platform_register:
1991         if (wmi_has_guid(ACERWMID_EVENT_GUID))
1992                 acer_wmi_input_destroy();
1993
1994         return err;
1995 }
1996
1997 static void __exit acer_wmi_exit(void)
1998 {
1999         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2000                 acer_wmi_input_destroy();
2001
2002         remove_sysfs(acer_platform_device);
2003         remove_debugfs();
2004         platform_device_unregister(acer_platform_device);
2005         platform_driver_unregister(&acer_platform_driver);
2006
2007         pr_info("Acer Laptop WMI Extras unloaded\n");
2008         return;
2009 }
2010
2011 module_init(acer_wmi_init);
2012 module_exit(acer_wmi_exit);