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 };
 469
 470 /* Find which quirks are needed for a particular vendor/ model pair */
 471 static void find_quirks(void)
 472 {
 473         if (!force_series) {
 474                 dmi_check_system(acer_quirks);
 475         } else if (force_series == 2490) {
 476                 quirks = &quirk_acer_travelmate_2490;
 477         }
 478
 479         if (quirks == NULL)
 480                 quirks = &quirk_unknown;
 481
 482         set_quirks();
 483 }
 484
 485 /*
 486  * General interface convenience methods
 487  */
 488
 489 static bool has_cap(u32 cap)
 490 {
 491         if ((interface->capability & cap) != 0)
 492                 return 1;
 493
 494         return 0;
 495 }
 496
 497 /*
 498  * AMW0 (V1) interface
 499  */
 500 struct wmab_args {
 501         u32 eax;
 502         u32 ebx;
 503         u32 ecx;
 504         u32 edx;
 505 };
 506
 507 struct wmab_ret {
 508         u32 eax;
 509         u32 ebx;
 510         u32 ecx;
 511         u32 edx;
 512         u32 eex;
 513 };
 514
 515 static acpi_status wmab_execute(struct wmab_args *regbuf,
 516 struct acpi_buffer *result)
 517 {
 518         struct acpi_buffer input;
 519         acpi_status status;
 520         input.length = sizeof(struct wmab_args);
 521         input.pointer = (u8 *)regbuf;
 522
 523         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
 524
 525         return status;
 526 }
 527
 528 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
 529 struct wmi_interface *iface)
 530 {
 531         int err;
 532         u8 result;
 533
 534         switch (cap) {
 535         case ACER_CAP_MAILLED:
 536                 switch (quirks->mailled) {
 537                 default:
 538                         err = ec_read(0xA, &result);
 539                         if (err)
 540                                 return AE_ERROR;
 541                         *value = (result >> 7) & 0x1;
 542                         return AE_OK;
 543                 }
 544                 break;
 545         case ACER_CAP_WIRELESS:
 546                 switch (quirks->wireless) {
 547                 case 1:
 548                         err = ec_read(0x7B, &result);
 549                         if (err)
 550                                 return AE_ERROR;
 551                         *value = result & 0x1;
 552                         return AE_OK;
 553                 case 2:
 554                         err = ec_read(0x71, &result);
 555                         if (err)
 556                                 return AE_ERROR;
 557                         *value = result & 0x1;
 558                         return AE_OK;
 559                 case 3:
 560                         err = ec_read(0x78, &result);
 561                         if (err)
 562                                 return AE_ERROR;
 563                         *value = result & 0x1;
 564                         return AE_OK;
 565                 default:
 566                         err = ec_read(0xA, &result);
 567                         if (err)
 568                                 return AE_ERROR;
 569                         *value = (result >> 2) & 0x1;
 570                         return AE_OK;
 571                 }
 572                 break;
 573         case ACER_CAP_BLUETOOTH:
 574                 switch (quirks->bluetooth) {
 575                 default:
 576                         err = ec_read(0xA, &result);
 577                         if (err)
 578                                 return AE_ERROR;
 579                         *value = (result >> 4) & 0x1;
 580                         return AE_OK;
 581                 }
 582                 break;
 583         case ACER_CAP_BRIGHTNESS:
 584                 switch (quirks->brightness) {
 585                 default:
 586                         err = ec_read(0x83, &result);
 587                         if (err)
 588                                 return AE_ERROR;
 589                         *value = result;
 590                         return AE_OK;
 591                 }
 592                 break;
 593         default:
 594                 return AE_ERROR;
 595         }
 596         return AE_OK;
 597 }
 598
 599 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
 600 {
 601         struct wmab_args args;
 602
 603         args.eax = ACER_AMW0_WRITE;
 604         args.ebx = value ? (1<<8) : 0;
 605         args.ecx = args.edx = 0;
 606
 607         switch (cap) {
 608         case ACER_CAP_MAILLED:
 609                 if (value > 1)
 610                         return AE_BAD_PARAMETER;
 611                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 612                 break;
 613         case ACER_CAP_WIRELESS:
 614                 if (value > 1)
 615                         return AE_BAD_PARAMETER;
 616                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 617                 break;
 618         case ACER_CAP_BLUETOOTH:
 619                 if (value > 1)
 620                         return AE_BAD_PARAMETER;
 621                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 622                 break;
 623         case ACER_CAP_BRIGHTNESS:
 624                 if (value > max_brightness)
 625                         return AE_BAD_PARAMETER;
 626                 switch (quirks->brightness) {
 627                 default:
 628                         return ec_write(0x83, value);
 629                         break;
 630                 }
 631         default:
 632                 return AE_ERROR;
 633         }
 634
 635         /* Actually do the set */
 636         return wmab_execute(&args, NULL);
 637 }
 638
 639 static acpi_status AMW0_find_mailled(void)
 640 {
 641         struct wmab_args args;
 642         struct wmab_ret ret;
 643         acpi_status status = AE_OK;
 644         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 645         union acpi_object *obj;
 646
 647         args.eax = 0x86;
 648         args.ebx = args.ecx = args.edx = 0;
 649
 650         status = wmab_execute(&args, &out);
 651         if (ACPI_FAILURE(status))
 652                 return status;
 653
 654         obj = (union acpi_object *) out.pointer;
 655         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 656         obj->buffer.length == sizeof(struct wmab_ret)) {
 657                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 658         } else {
 659                 kfree(out.pointer);
 660                 return AE_ERROR;
 661         }
 662
 663         if (ret.eex & 0x1)
 664                 interface->capability |= ACER_CAP_MAILLED;
 665
 666         kfree(out.pointer);
 667
 668         return AE_OK;
 669 }
 670
 671 static acpi_status AMW0_set_capabilities(void)
 672 {
 673         struct wmab_args args;
 674         struct wmab_ret ret;
 675         acpi_status status;
 676         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 677         union acpi_object *obj;
 678
 679         /*
 680          * On laptops with this strange GUID (non Acer), normal probing doesn't
 681          * work.
 682          */
 683         if (wmi_has_guid(AMW0_GUID2)) {
 684                 interface->capability |= ACER_CAP_WIRELESS;
 685                 return AE_OK;
 686         }
 687
 688         args.eax = ACER_AMW0_WRITE;
 689         args.ecx = args.edx = 0;
 690
 691         args.ebx = 0xa2 << 8;
 692         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 693
 694         status = wmab_execute(&args, &out);
 695         if (ACPI_FAILURE(status))
 696                 return status;
 697
 698         obj = out.pointer;
 699         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 700         obj->buffer.length == sizeof(struct wmab_ret)) {
 701                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 702         } else {
 703                 status = AE_ERROR;
 704                 goto out;
 705         }
 706
 707         if (ret.eax & 0x1)
 708                 interface->capability |= ACER_CAP_WIRELESS;
 709
 710         args.ebx = 2 << 8;
 711         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 712
 713         /*
 714          * It's ok to use existing buffer for next wmab_execute call.
 715          * But we need to kfree(out.pointer) if next wmab_execute fail.
 716          */
 717         status = wmab_execute(&args, &out);
 718         if (ACPI_FAILURE(status))
 719                 goto out;
 720
 721         obj = (union acpi_object *) out.pointer;
 722         if (obj && obj->type == ACPI_TYPE_BUFFER
 723         && obj->buffer.length == sizeof(struct wmab_ret)) {
 724                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 725         } else {
 726                 status = AE_ERROR;
 727                 goto out;
 728         }
 729
 730         if (ret.eax & 0x1)
 731                 interface->capability |= ACER_CAP_BLUETOOTH;
 732
 733         /*
 734          * This appears to be safe to enable, since all Wistron based laptops
 735          * appear to use the same EC register for brightness, even if they
 736          * differ for wireless, etc
 737          */
 738         if (quirks->brightness >= 0)
 739                 interface->capability |= ACER_CAP_BRIGHTNESS;
 740
 741         status = AE_OK;
 742 out:
 743         kfree(out.pointer);
 744         return status;
 745 }
 746
 747 static struct wmi_interface AMW0_interface = {
 748         .type = ACER_AMW0,
 749 };
 750
 751 static struct wmi_interface AMW0_V2_interface = {
 752         .type = ACER_AMW0_V2,
 753 };
 754
 755 /*
 756  * New interface (The WMID interface)
 757  */
 758 static acpi_status
 759 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 760 {
 761         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 762         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 763         union acpi_object *obj;
 764         u32 tmp;
 765         acpi_status status;
 766
 767         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 768
 769         if (ACPI_FAILURE(status))
 770                 return status;
 771
 772         obj = (union acpi_object *) result.pointer;
 773         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 774                 (obj->buffer.length == sizeof(u32) ||
 775                 obj->buffer.length == sizeof(u64))) {
 776                 tmp = *((u32 *) obj->buffer.pointer);
 777         } else if (obj->type == ACPI_TYPE_INTEGER) {
 778                 tmp = (u32) obj->integer.value;
 779         } else {
 780                 tmp = 0;
 781         }
 782
 783         if (out)
 784                 *out = tmp;
 785
 786         kfree(result.pointer);
 787
 788         return status;
 789 }
 790
 791 static acpi_status WMID_get_u32(u32 *value, u32 cap,
 792 struct wmi_interface *iface)
 793 {
 794         acpi_status status;
 795         u8 tmp;
 796         u32 result, method_id = 0;
 797
 798         switch (cap) {
 799         case ACER_CAP_WIRELESS:
 800                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 801                 break;
 802         case ACER_CAP_BLUETOOTH:
 803                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 804                 break;
 805         case ACER_CAP_BRIGHTNESS:
 806                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 807                 break;
 808         case ACER_CAP_THREEG:
 809                 method_id = ACER_WMID_GET_THREEG_METHODID;
 810                 break;
 811         case ACER_CAP_MAILLED:
 812                 if (quirks->mailled == 1) {
 813                         ec_read(0x9f, &tmp);
 814                         *value = tmp & 0x1;
 815                         return 0;
 816                 }
 817         default:
 818                 return AE_ERROR;
 819         }
 820         status = WMI_execute_u32(method_id, 0, &result);
 821
 822         if (ACPI_SUCCESS(status))
 823                 *value = (u8)result;
 824
 825         return status;
 826 }
 827
 828 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
 829 {
 830         u32 method_id = 0;
 831         char param;
 832
 833         switch (cap) {
 834         case ACER_CAP_BRIGHTNESS:
 835                 if (value > max_brightness)
 836                         return AE_BAD_PARAMETER;
 837                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
 838                 break;
 839         case ACER_CAP_WIRELESS:
 840                 if (value > 1)
 841                         return AE_BAD_PARAMETER;
 842                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
 843                 break;
 844         case ACER_CAP_BLUETOOTH:
 845                 if (value > 1)
 846                         return AE_BAD_PARAMETER;
 847                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
 848                 break;
 849         case ACER_CAP_THREEG:
 850                 if (value > 1)
 851                         return AE_BAD_PARAMETER;
 852                 method_id = ACER_WMID_SET_THREEG_METHODID;
 853                 break;
 854         case ACER_CAP_MAILLED:
 855                 if (value > 1)
 856                         return AE_BAD_PARAMETER;
 857                 if (quirks->mailled == 1) {
 858                         param = value ? 0x92 : 0x93;
 859                         i8042_lock_chip();
 860                         i8042_command(&param, 0x1059);
 861                         i8042_unlock_chip();
 862                         return 0;
 863                 }
 864                 break;
 865         default:
 866                 return AE_ERROR;
 867         }
 868         return WMI_execute_u32(method_id, (u32)value, NULL);
 869 }
 870
 871 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
 872 {
 873         struct hotkey_function_type_aa *type_aa;
 874
 875         /* We are looking for OEM-specific Type AAh */
 876         if (header->type != 0xAA)
 877                 return;
 878
 879         has_type_aa = true;
 880         type_aa = (struct hotkey_function_type_aa *) header;
 881
 882         pr_info("Function bitmap for Communication Button: 0x%x\n",
 883                 type_aa->commun_func_bitmap);
 884
 885         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
 886                 interface->capability |= ACER_CAP_WIRELESS;
 887         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
 888                 interface->capability |= ACER_CAP_THREEG;
 889         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
 890                 interface->capability |= ACER_CAP_BLUETOOTH;
 891 }
 892
 893 static acpi_status WMID_set_capabilities(void)
 894 {
 895         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
 896         union acpi_object *obj;
 897         acpi_status status;
 898         u32 devices;
 899
 900         status = wmi_query_block(WMID_GUID2, 1, &out);
 901         if (ACPI_FAILURE(status))
 902                 return status;
 903
 904         obj = (union acpi_object *) out.pointer;
 905         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 906                 (obj->buffer.length == sizeof(u32) ||
 907                 obj->buffer.length == sizeof(u64))) {
 908                 devices = *((u32 *) obj->buffer.pointer);
 909         } else if (obj->type == ACPI_TYPE_INTEGER) {
 910                 devices = (u32) obj->integer.value;
 911         } else {
 912                 kfree(out.pointer);
 913                 return AE_ERROR;
 914         }
 915
 916         dmi_walk(type_aa_dmi_decode, NULL);
 917         if (!has_type_aa) {
 918                 interface->capability |= ACER_CAP_WIRELESS;
 919                 if (devices & 0x40)
 920                         interface->capability |= ACER_CAP_THREEG;
 921                 if (devices & 0x10)
 922                         interface->capability |= ACER_CAP_BLUETOOTH;
 923         }
 924
 925         /* WMID always provides brightness methods */
 926         interface->capability |= ACER_CAP_BRIGHTNESS;
 927
 928         if (!(devices & 0x20))
 929                 max_brightness = 0x9;
 930
 931         kfree(out.pointer);
 932         return status;
 933 }
 934
 935 static struct wmi_interface wmid_interface = {
 936         .type = ACER_WMID,
 937 };
 938
 939 /*
 940  * Generic Device (interface-independent)
 941  */
 942
 943 static acpi_status get_u32(u32 *value, u32 cap)
 944 {
 945         acpi_status status = AE_ERROR;
 946
 947         switch (interface->type) {
 948         case ACER_AMW0:
 949                 status = AMW0_get_u32(value, cap, interface);
 950                 break;
 951         case ACER_AMW0_V2:
 952                 if (cap == ACER_CAP_MAILLED) {
 953                         status = AMW0_get_u32(value, cap, interface);
 954                         break;
 955                 }
 956         case ACER_WMID:
 957                 status = WMID_get_u32(value, cap, interface);
 958                 break;
 959         }
 960
 961         return status;
 962 }
 963
 964 static acpi_status set_u32(u32 value, u32 cap)
 965 {
 966         acpi_status status;
 967
 968         if (interface->capability & cap) {
 969                 switch (interface->type) {
 970                 case ACER_AMW0:
 971                         return AMW0_set_u32(value, cap, interface);
 972                 case ACER_AMW0_V2:
 973                         if (cap == ACER_CAP_MAILLED)
 974                                 return AMW0_set_u32(value, cap, interface);
 975
 976                         /*
 977                          * On some models, some WMID methods don't toggle
 978                          * properly. For those cases, we want to run the AMW0
 979                          * method afterwards to be certain we've really toggled
 980                          * the device state.
 981                          */
 982                         if (cap == ACER_CAP_WIRELESS ||
 983                                 cap == ACER_CAP_BLUETOOTH) {
 984                                 status = WMID_set_u32(value, cap, interface);
 985                                 if (ACPI_FAILURE(status))
 986                                         return status;
 987
 988                                 return AMW0_set_u32(value, cap, interface);
 989                         }
 990                 case ACER_WMID:
 991                         return WMID_set_u32(value, cap, interface);
 992                 default:
 993                         return AE_BAD_PARAMETER;
 994                 }
 995         }
 996         return AE_BAD_PARAMETER;
 997 }
 998
 999 static void __init acer_commandline_init(void)
1000 {
1001         /*
1002          * These will all fail silently if the value given is invalid, or the
1003          * capability isn't available on the given interface
1004          */
1005         if (mailled >= 0)
1006                 set_u32(mailled, ACER_CAP_MAILLED);
1007         if (!has_type_aa && threeg >= 0)
1008                 set_u32(threeg, ACER_CAP_THREEG);
1009         if (brightness >= 0)
1010                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1011 }
1012
1013 /*
1014  * LED device (Mail LED only, no other LEDs known yet)
1015  */
1016 static void mail_led_set(struct led_classdev *led_cdev,
1017 enum led_brightness value)
1018 {
1019         set_u32(value, ACER_CAP_MAILLED);
1020 }
1021
1022 static struct led_classdev mail_led = {
1023         .name = "acer-wmi::mail",
1024         .brightness_set = mail_led_set,
1025 };
1026
1027 static int __devinit acer_led_init(struct device *dev)
1028 {
1029         return led_classdev_register(dev, &mail_led);
1030 }
1031
1032 static void acer_led_exit(void)
1033 {
1034         set_u32(LED_OFF, ACER_CAP_MAILLED);
1035         led_classdev_unregister(&mail_led);
1036 }
1037
1038 /*
1039  * Backlight device
1040  */
1041 static struct backlight_device *acer_backlight_device;
1042
1043 static int read_brightness(struct backlight_device *bd)
1044 {
1045         u32 value;
1046         get_u32(&value, ACER_CAP_BRIGHTNESS);
1047         return value;
1048 }
1049
1050 static int update_bl_status(struct backlight_device *bd)
1051 {
1052         int intensity = bd->props.brightness;
1053
1054         if (bd->props.power != FB_BLANK_UNBLANK)
1055                 intensity = 0;
1056         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1057                 intensity = 0;
1058
1059         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1060
1061         return 0;
1062 }
1063
1064 static const struct backlight_ops acer_bl_ops = {
1065         .get_brightness = read_brightness,
1066         .update_status = update_bl_status,
1067 };
1068
1069 static int __devinit acer_backlight_init(struct device *dev)
1070 {
1071         struct backlight_properties props;
1072         struct backlight_device *bd;
1073
1074         memset(&props, 0, sizeof(struct backlight_properties));
1075         props.type = BACKLIGHT_PLATFORM;
1076         props.max_brightness = max_brightness;
1077         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1078                                        &props);
1079         if (IS_ERR(bd)) {
1080                 pr_err("Could not register Acer backlight device\n");
1081                 acer_backlight_device = NULL;
1082                 return PTR_ERR(bd);
1083         }
1084
1085         acer_backlight_device = bd;
1086
1087         bd->props.power = FB_BLANK_UNBLANK;
1088         bd->props.brightness = read_brightness(bd);
1089         backlight_update_status(bd);
1090         return 0;
1091 }
1092
1093 static void acer_backlight_exit(void)
1094 {
1095         backlight_device_unregister(acer_backlight_device);
1096 }
1097
1098 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1099 {
1100         struct wmid3_gds_return_value return_value;
1101         acpi_status status;
1102         union acpi_object *obj;
1103         struct wmid3_gds_input_param params = {
1104                 .function_num = 0x1,
1105                 .hotkey_number = 0x01,
1106                 .devices = device,
1107         };
1108         struct acpi_buffer input = {
1109                 sizeof(struct wmid3_gds_input_param),
1110                 &params
1111         };
1112         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1113
1114         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1115         if (ACPI_FAILURE(status))
1116                 return status;
1117
1118         obj = output.pointer;
1119
1120         if (!obj)
1121                 return AE_ERROR;
1122         else if (obj->type != ACPI_TYPE_BUFFER) {
1123                 kfree(obj);
1124                 return AE_ERROR;
1125         }
1126         if (obj->buffer.length != 8) {
1127                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1128                 kfree(obj);
1129                 return AE_ERROR;
1130         }
1131
1132         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1133         kfree(obj);
1134
1135         if (return_value.error_code || return_value.ec_return_value)
1136                 pr_warn("Get Device Status failed: 0x%x - 0x%x\n",
1137                         return_value.error_code,
1138                         return_value.ec_return_value);
1139         else
1140                 *value = !!(return_value.devices & device);
1141
1142         return status;
1143 }
1144
1145 static acpi_status get_device_status(u32 *value, u32 cap)
1146 {
1147         if (wmi_has_guid(WMID_GUID3)) {
1148                 u16 device;
1149
1150                 switch (cap) {
1151                 case ACER_CAP_WIRELESS:
1152                         device = ACER_WMID3_GDS_WIRELESS;
1153                         break;
1154                 case ACER_CAP_BLUETOOTH:
1155                         device = ACER_WMID3_GDS_BLUETOOTH;
1156                         break;
1157                 case ACER_CAP_THREEG:
1158                         device = ACER_WMID3_GDS_THREEG;
1159                         break;
1160                 default:
1161                         return AE_ERROR;
1162                 }
1163                 return wmid3_get_device_status(value, device);
1164
1165         } else {
1166                 return get_u32(value, cap);
1167         }
1168 }
1169
1170 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1171 {
1172         struct wmid3_gds_return_value return_value;
1173         acpi_status status;
1174         union acpi_object *obj;
1175         u16 devices;
1176         struct wmid3_gds_input_param params = {
1177                 .function_num = 0x1,
1178                 .hotkey_number = 0x01,
1179                 .devices = ACER_WMID3_GDS_WIRELESS |
1180                                 ACER_WMID3_GDS_THREEG |
1181                                 ACER_WMID3_GDS_WIMAX |
1182                                 ACER_WMID3_GDS_BLUETOOTH,
1183         };
1184         struct acpi_buffer input = {
1185                 sizeof(struct wmid3_gds_input_param),
1186                 &params
1187         };
1188         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1189         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1190
1191         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1192         if (ACPI_FAILURE(status))
1193                 return status;
1194
1195         obj = output.pointer;
1196
1197         if (!obj)
1198                 return AE_ERROR;
1199         else if (obj->type != ACPI_TYPE_BUFFER) {
1200                 kfree(obj);
1201                 return AE_ERROR;
1202         }
1203         if (obj->buffer.length != 8) {
1204                 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1205                 kfree(obj);
1206                 return AE_ERROR;
1207         }
1208
1209         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1210         kfree(obj);
1211
1212         if (return_value.error_code || return_value.ec_return_value) {
1213                 pr_warning("Get Current Device Status failed: "
1214                         "0x%x - 0x%x\n", return_value.error_code,
1215                         return_value.ec_return_value);
1216                 return status;
1217         }
1218
1219         devices = return_value.devices;
1220         params.function_num = 0x2;
1221         params.hotkey_number = 0x01;
1222         params.devices = (value) ? (devices | device) : (devices & ~device);
1223
1224         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
1225         if (ACPI_FAILURE(status))
1226                 return status;
1227
1228         obj = output2.pointer;
1229
1230         if (!obj)
1231                 return AE_ERROR;
1232         else if (obj->type != ACPI_TYPE_BUFFER) {
1233                 kfree(obj);
1234                 return AE_ERROR;
1235         }
1236         if (obj->buffer.length != 4) {
1237                 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1238                 kfree(obj);
1239                 return AE_ERROR;
1240         }
1241
1242         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1243         kfree(obj);
1244
1245         if (return_value.error_code || return_value.ec_return_value)
1246                 pr_warning("Set Device Status failed: "
1247                         "0x%x - 0x%x\n", return_value.error_code,
1248                         return_value.ec_return_value);
1249
1250         return status;
1251 }
1252
1253 static acpi_status set_device_status(u32 value, u32 cap)
1254 {
1255         if (wmi_has_guid(WMID_GUID3)) {
1256                 u16 device;
1257
1258                 switch (cap) {
1259                 case ACER_CAP_WIRELESS:
1260                         device = ACER_WMID3_GDS_WIRELESS;
1261                         break;
1262                 case ACER_CAP_BLUETOOTH:
1263                         device = ACER_WMID3_GDS_BLUETOOTH;
1264                         break;
1265                 case ACER_CAP_THREEG:
1266                         device = ACER_WMID3_GDS_THREEG;
1267                         break;
1268                 default:
1269                         return AE_ERROR;
1270                 }
1271                 return wmid3_set_device_status(value, device);
1272
1273         } else {
1274                 return set_u32(value, cap);
1275         }
1276 }
1277
1278 /*
1279  * Rfkill devices
1280  */
1281 static void acer_rfkill_update(struct work_struct *ignored);
1282 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1283 static void acer_rfkill_update(struct work_struct *ignored)
1284 {
1285         u32 state;
1286         acpi_status status;
1287
1288         status = get_u32(&state, ACER_CAP_WIRELESS);
1289         if (ACPI_SUCCESS(status)) {
1290                 if (quirks->wireless == 3) {
1291                         rfkill_set_hw_state(wireless_rfkill, !state);
1292                 } else {
1293                         rfkill_set_sw_state(wireless_rfkill, !state);
1294                 }
1295         }
1296
1297         if (has_cap(ACER_CAP_BLUETOOTH)) {
1298                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1299                 if (ACPI_SUCCESS(status))
1300                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1301         }
1302
1303         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1304                 status = wmid3_get_device_status(&state,
1305                                 ACER_WMID3_GDS_THREEG);
1306                 if (ACPI_SUCCESS(status))
1307                         rfkill_set_sw_state(threeg_rfkill, !state);
1308         }
1309
1310         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1311 }
1312
1313 static int acer_rfkill_set(void *data, bool blocked)
1314 {
1315         acpi_status status;
1316         u32 cap = (unsigned long)data;
1317
1318         if (rfkill_inited) {
1319                 status = set_device_status(!blocked, cap);
1320                 if (ACPI_FAILURE(status))
1321                         return -ENODEV;
1322         }
1323
1324         return 0;
1325 }
1326
1327 static const struct rfkill_ops acer_rfkill_ops = {
1328         .set_block = acer_rfkill_set,
1329 };
1330
1331 static struct rfkill *acer_rfkill_register(struct device *dev,
1332                                            enum rfkill_type type,
1333                                            char *name, u32 cap)
1334 {
1335         int err;
1336         struct rfkill *rfkill_dev;
1337         u32 state;
1338         acpi_status status;
1339
1340         rfkill_dev = rfkill_alloc(name, dev, type,
1341                                   &acer_rfkill_ops,
1342                                   (void *)(unsigned long)cap);
1343         if (!rfkill_dev)
1344                 return ERR_PTR(-ENOMEM);
1345
1346         status = get_device_status(&state, cap);
1347
1348         err = rfkill_register(rfkill_dev);
1349         if (err) {
1350                 rfkill_destroy(rfkill_dev);
1351                 return ERR_PTR(err);
1352         }
1353
1354         if (ACPI_SUCCESS(status))
1355                 rfkill_set_sw_state(rfkill_dev, !state);
1356
1357         return rfkill_dev;
1358 }
1359
1360 static int acer_rfkill_init(struct device *dev)
1361 {
1362         wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1363                 "acer-wireless", ACER_CAP_WIRELESS);
1364         if (IS_ERR(wireless_rfkill))
1365                 return PTR_ERR(wireless_rfkill);
1366
1367         if (has_cap(ACER_CAP_BLUETOOTH)) {
1368                 bluetooth_rfkill = acer_rfkill_register(dev,
1369                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1370                         ACER_CAP_BLUETOOTH);
1371                 if (IS_ERR(bluetooth_rfkill)) {
1372                         rfkill_unregister(wireless_rfkill);
1373                         rfkill_destroy(wireless_rfkill);
1374                         return PTR_ERR(bluetooth_rfkill);
1375                 }
1376         }
1377
1378         if (has_cap(ACER_CAP_THREEG)) {
1379                 threeg_rfkill = acer_rfkill_register(dev,
1380                         RFKILL_TYPE_WWAN, "acer-threeg",
1381                         ACER_CAP_THREEG);
1382                 if (IS_ERR(threeg_rfkill)) {
1383                         rfkill_unregister(wireless_rfkill);
1384                         rfkill_destroy(wireless_rfkill);
1385                         rfkill_unregister(bluetooth_rfkill);
1386                         rfkill_destroy(bluetooth_rfkill);
1387                         return PTR_ERR(threeg_rfkill);
1388                 }
1389         }
1390
1391         rfkill_inited = true;
1392
1393         if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1394                 schedule_delayed_work(&acer_rfkill_work,
1395                         round_jiffies_relative(HZ));
1396
1397         return 0;
1398 }
1399
1400 static void acer_rfkill_exit(void)
1401 {
1402         if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1403                 cancel_delayed_work_sync(&acer_rfkill_work);
1404
1405         rfkill_unregister(wireless_rfkill);
1406         rfkill_destroy(wireless_rfkill);
1407
1408         if (has_cap(ACER_CAP_BLUETOOTH)) {
1409                 rfkill_unregister(bluetooth_rfkill);
1410                 rfkill_destroy(bluetooth_rfkill);
1411         }
1412
1413         if (has_cap(ACER_CAP_THREEG)) {
1414                 rfkill_unregister(threeg_rfkill);
1415                 rfkill_destroy(threeg_rfkill);
1416         }
1417         return;
1418 }
1419
1420 /*
1421  * sysfs interface
1422  */
1423 static ssize_t show_bool_threeg(struct device *dev,
1424         struct device_attribute *attr, char *buf)
1425 {
1426         u32 result; \
1427         acpi_status status;
1428
1429         pr_info("This threeg sysfs will be removed in 2012"
1430                 " - used by: %s\n", current->comm);
1431         if (wmi_has_guid(WMID_GUID3))
1432                 status = wmid3_get_device_status(&result,
1433                                 ACER_WMID3_GDS_THREEG);
1434         else
1435                 status = get_u32(&result, ACER_CAP_THREEG);
1436         if (ACPI_SUCCESS(status))
1437                 return sprintf(buf, "%u\n", result);
1438         return sprintf(buf, "Read error\n");
1439 }
1440
1441 static ssize_t set_bool_threeg(struct device *dev,
1442         struct device_attribute *attr, const char *buf, size_t count)
1443 {
1444         u32 tmp = simple_strtoul(buf, NULL, 10);
1445         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1446         pr_info("This threeg sysfs will be removed in 2012"
1447                 " - used by: %s\n", current->comm);
1448         if (ACPI_FAILURE(status))
1449                 return -EINVAL;
1450         return count;
1451 }
1452 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1453         set_bool_threeg);
1454
1455 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1456         char *buf)
1457 {
1458         pr_info("This interface sysfs will be removed in 2012"
1459                 " - used by: %s\n", current->comm);
1460         switch (interface->type) {
1461         case ACER_AMW0:
1462                 return sprintf(buf, "AMW0\n");
1463         case ACER_AMW0_V2:
1464                 return sprintf(buf, "AMW0 v2\n");
1465         case ACER_WMID:
1466                 return sprintf(buf, "WMID\n");
1467         default:
1468                 return sprintf(buf, "Error!\n");
1469         }
1470 }
1471
1472 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1473
1474 static void acer_wmi_notify(u32 value, void *context)
1475 {
1476         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1477         union acpi_object *obj;
1478         struct event_return_value return_value;
1479         acpi_status status;
1480         u16 device_state;
1481         const struct key_entry *key;
1482
1483         status = wmi_get_event_data(value, &response);
1484         if (status != AE_OK) {
1485                 pr_warn("bad event status 0x%x\n", status);
1486                 return;
1487         }
1488
1489         obj = (union acpi_object *)response.pointer;
1490
1491         if (!obj)
1492                 return;
1493         if (obj->type != ACPI_TYPE_BUFFER) {
1494                 pr_warn("Unknown response received %d\n", obj->type);
1495                 kfree(obj);
1496                 return;
1497         }
1498         if (obj->buffer.length != 8) {
1499                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1500                 kfree(obj);
1501                 return;
1502         }
1503
1504         return_value = *((struct event_return_value *)obj->buffer.pointer);
1505         kfree(obj);
1506
1507         switch (return_value.function) {
1508         case WMID_HOTKEY_EVENT:
1509                 device_state = return_value.device_state;
1510                 pr_debug("device state: 0x%x\n", device_state);
1511
1512                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1513                                                         return_value.key_num);
1514                 if (!key) {
1515                         pr_warn("Unknown key number - 0x%x\n",
1516                                 return_value.key_num);
1517                 } else {
1518                         switch (key->keycode) {
1519                         case KEY_WLAN:
1520                         case KEY_BLUETOOTH:
1521                                 if (has_cap(ACER_CAP_WIRELESS))
1522                                         rfkill_set_sw_state(wireless_rfkill,
1523                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1524                                 if (has_cap(ACER_CAP_THREEG))
1525                                         rfkill_set_sw_state(threeg_rfkill,
1526                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1527                                 if (has_cap(ACER_CAP_BLUETOOTH))
1528                                         rfkill_set_sw_state(bluetooth_rfkill,
1529                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1530                                 break;
1531                         }
1532                         sparse_keymap_report_entry(acer_wmi_input_dev, key,
1533                                                    1, true);
1534                 }
1535                 break;
1536         default:
1537                 pr_warn("Unknown function number - %d - %d\n",
1538                         return_value.function, return_value.key_num);
1539                 break;
1540         }
1541 }
1542
1543 static acpi_status
1544 wmid3_set_lm_mode(struct lm_input_params *params,
1545                   struct lm_return_value *return_value)
1546 {
1547         acpi_status status;
1548         union acpi_object *obj;
1549
1550         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1551         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1552
1553         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1554         if (ACPI_FAILURE(status))
1555                 return status;
1556
1557         obj = output.pointer;
1558
1559         if (!obj)
1560                 return AE_ERROR;
1561         else if (obj->type != ACPI_TYPE_BUFFER) {
1562                 kfree(obj);
1563                 return AE_ERROR;
1564         }
1565         if (obj->buffer.length != 4) {
1566                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1567                 kfree(obj);
1568                 return AE_ERROR;
1569         }
1570
1571         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1572         kfree(obj);
1573
1574         return status;
1575 }
1576
1577 static int acer_wmi_enable_ec_raw(void)
1578 {
1579         struct lm_return_value return_value;
1580         acpi_status status;
1581         struct lm_input_params params = {
1582                 .function_num = 0x1,
1583                 .commun_devices = 0xFFFF,
1584                 .devices = 0xFFFF,
1585                 .lm_status = 0x00,            /* Launch Manager Deactive */
1586         };
1587
1588         status = wmid3_set_lm_mode(&params, &return_value);
1589
1590         if (return_value.error_code || return_value.ec_return_value)
1591                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1592                         return_value.error_code,
1593                         return_value.ec_return_value);
1594         else
1595                 pr_info("Enabled EC raw mode\n");
1596
1597         return status;
1598 }
1599
1600 static int acer_wmi_enable_lm(void)
1601 {
1602         struct lm_return_value return_value;
1603         acpi_status status;
1604         struct lm_input_params params = {
1605                 .function_num = 0x1,
1606                 .commun_devices = 0xFFFF,
1607                 .devices = 0xFFFF,
1608                 .lm_status = 0x01,            /* Launch Manager Active */
1609         };
1610
1611         status = wmid3_set_lm_mode(&params, &return_value);
1612
1613         if (return_value.error_code || return_value.ec_return_value)
1614                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1615                         return_value.error_code,
1616                         return_value.ec_return_value);
1617
1618         return status;
1619 }
1620
1621 static int __init acer_wmi_input_setup(void)
1622 {
1623         acpi_status status;
1624         int err;
1625
1626         acer_wmi_input_dev = input_allocate_device();
1627         if (!acer_wmi_input_dev)
1628                 return -ENOMEM;
1629
1630         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1631         acer_wmi_input_dev->phys = "wmi/input0";
1632         acer_wmi_input_dev->id.bustype = BUS_HOST;
1633
1634         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1635         if (err)
1636                 goto err_free_dev;
1637
1638         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1639                                                 acer_wmi_notify, NULL);
1640         if (ACPI_FAILURE(status)) {
1641                 err = -EIO;
1642                 goto err_free_keymap;
1643         }
1644
1645         err = input_register_device(acer_wmi_input_dev);
1646         if (err)
1647                 goto err_uninstall_notifier;
1648
1649         return 0;
1650
1651 err_uninstall_notifier:
1652         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1653 err_free_keymap:
1654         sparse_keymap_free(acer_wmi_input_dev);
1655 err_free_dev:
1656         input_free_device(acer_wmi_input_dev);
1657         return err;
1658 }
1659
1660 static void acer_wmi_input_destroy(void)
1661 {
1662         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1663         sparse_keymap_free(acer_wmi_input_dev);
1664         input_unregister_device(acer_wmi_input_dev);
1665 }
1666
1667 /*
1668  * debugfs functions
1669  */
1670 static u32 get_wmid_devices(void)
1671 {
1672         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1673         union acpi_object *obj;
1674         acpi_status status;
1675         u32 devices = 0;
1676
1677         status = wmi_query_block(WMID_GUID2, 1, &out);
1678         if (ACPI_FAILURE(status))
1679                 return 0;
1680
1681         obj = (union acpi_object *) out.pointer;
1682         if (obj && obj->type == ACPI_TYPE_BUFFER &&
1683                 (obj->buffer.length == sizeof(u32) ||
1684                 obj->buffer.length == sizeof(u64))) {
1685                 devices = *((u32 *) obj->buffer.pointer);
1686         } else if (obj->type == ACPI_TYPE_INTEGER) {
1687                 devices = (u32) obj->integer.value;
1688         }
1689
1690         kfree(out.pointer);
1691         return devices;
1692 }
1693
1694 /*
1695  * Platform device
1696  */
1697 static int __devinit acer_platform_probe(struct platform_device *device)
1698 {
1699         int err;
1700
1701         if (has_cap(ACER_CAP_MAILLED)) {
1702                 err = acer_led_init(&device->dev);
1703                 if (err)
1704                         goto error_mailled;
1705         }
1706
1707         if (has_cap(ACER_CAP_BRIGHTNESS)) {
1708                 err = acer_backlight_init(&device->dev);
1709                 if (err)
1710                         goto error_brightness;
1711         }
1712
1713         err = acer_rfkill_init(&device->dev);
1714         if (err)
1715                 goto error_rfkill;
1716
1717         return err;
1718
1719 error_rfkill:
1720         if (has_cap(ACER_CAP_BRIGHTNESS))
1721                 acer_backlight_exit();
1722 error_brightness:
1723         if (has_cap(ACER_CAP_MAILLED))
1724                 acer_led_exit();
1725 error_mailled:
1726         return err;
1727 }
1728
1729 static int acer_platform_remove(struct platform_device *device)
1730 {
1731         if (has_cap(ACER_CAP_MAILLED))
1732                 acer_led_exit();
1733         if (has_cap(ACER_CAP_BRIGHTNESS))
1734                 acer_backlight_exit();
1735
1736         acer_rfkill_exit();
1737         return 0;
1738 }
1739
1740 static int acer_platform_suspend(struct platform_device *dev,
1741 pm_message_t state)
1742 {
1743         u32 value;
1744         struct acer_data *data = &interface->data;
1745
1746         if (!data)
1747                 return -ENOMEM;
1748
1749         if (has_cap(ACER_CAP_MAILLED)) {
1750                 get_u32(&value, ACER_CAP_MAILLED);
1751                 set_u32(LED_OFF, ACER_CAP_MAILLED);
1752                 data->mailled = value;
1753         }
1754
1755         if (has_cap(ACER_CAP_BRIGHTNESS)) {
1756                 get_u32(&value, ACER_CAP_BRIGHTNESS);
1757                 data->brightness = value;
1758         }
1759
1760         return 0;
1761 }
1762
1763 static int acer_platform_resume(struct platform_device *device)
1764 {
1765         struct acer_data *data = &interface->data;
1766
1767         if (!data)
1768                 return -ENOMEM;
1769
1770         if (has_cap(ACER_CAP_MAILLED))
1771                 set_u32(data->mailled, ACER_CAP_MAILLED);
1772
1773         if (has_cap(ACER_CAP_BRIGHTNESS))
1774                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1775
1776         return 0;
1777 }
1778
1779 static void acer_platform_shutdown(struct platform_device *device)
1780 {
1781         struct acer_data *data = &interface->data;
1782
1783         if (!data)
1784                 return;
1785
1786         if (has_cap(ACER_CAP_MAILLED))
1787                 set_u32(LED_OFF, ACER_CAP_MAILLED);
1788 }
1789
1790 static struct platform_driver acer_platform_driver = {
1791         .driver = {
1792                 .name = "acer-wmi",
1793                 .owner = THIS_MODULE,
1794         },
1795         .probe = acer_platform_probe,
1796         .remove = acer_platform_remove,
1797         .suspend = acer_platform_suspend,
1798         .resume = acer_platform_resume,
1799         .shutdown = acer_platform_shutdown,
1800 };
1801
1802 static struct platform_device *acer_platform_device;
1803
1804 static int remove_sysfs(struct platform_device *device)
1805 {
1806         if (has_cap(ACER_CAP_THREEG))
1807                 device_remove_file(&device->dev, &dev_attr_threeg);
1808
1809         device_remove_file(&device->dev, &dev_attr_interface);
1810
1811         return 0;
1812 }
1813
1814 static int create_sysfs(void)
1815 {
1816         int retval = -ENOMEM;
1817
1818         if (has_cap(ACER_CAP_THREEG)) {
1819                 retval = device_create_file(&acer_platform_device->dev,
1820                         &dev_attr_threeg);
1821                 if (retval)
1822                         goto error_sysfs;
1823         }
1824
1825         retval = device_create_file(&acer_platform_device->dev,
1826                 &dev_attr_interface);
1827         if (retval)
1828                 goto error_sysfs;
1829
1830         return 0;
1831
1832 error_sysfs:
1833                 remove_sysfs(acer_platform_device);
1834         return retval;
1835 }
1836
1837 static void remove_debugfs(void)
1838 {
1839         debugfs_remove(interface->debug.devices);
1840         debugfs_remove(interface->debug.root);
1841 }
1842
1843 static int create_debugfs(void)
1844 {
1845         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1846         if (!interface->debug.root) {
1847                 pr_err("Failed to create debugfs directory");
1848                 return -ENOMEM;
1849         }
1850
1851         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1852                                         interface->debug.root,
1853                                         &interface->debug.wmid_devices);
1854         if (!interface->debug.devices)
1855                 goto error_debugfs;
1856
1857         return 0;
1858
1859 error_debugfs:
1860         remove_debugfs();
1861         return -ENOMEM;
1862 }
1863
1864 static int __init acer_wmi_init(void)
1865 {
1866         int err;
1867
1868         pr_info("Acer Laptop ACPI-WMI Extras\n");
1869
1870         if (dmi_check_system(acer_blacklist)) {
1871                 pr_info("Blacklisted hardware detected - not loading\n");
1872                 return -ENODEV;
1873         }
1874
1875         find_quirks();
1876
1877         /*
1878          * Detect which ACPI-WMI interface we're using.
1879          */
1880         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1881                 interface = &AMW0_V2_interface;
1882
1883         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1884                 interface = &wmid_interface;
1885
1886         if (wmi_has_guid(WMID_GUID2) && interface) {
1887                 if (ACPI_FAILURE(WMID_set_capabilities())) {
1888                         pr_err("Unable to detect available WMID devices\n");
1889                         return -ENODEV;
1890                 }
1891         } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1892                 pr_err("No WMID device detection method found\n");
1893                 return -ENODEV;
1894         }
1895
1896         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1897                 interface = &AMW0_interface;
1898
1899                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1900                         pr_err("Unable to detect available AMW0 devices\n");
1901                         return -ENODEV;
1902                 }
1903         }
1904
1905         if (wmi_has_guid(AMW0_GUID1))
1906                 AMW0_find_mailled();
1907
1908         if (!interface) {
1909                 pr_err("No or unsupported WMI interface, unable to load\n");
1910                 return -ENODEV;
1911         }
1912
1913         set_quirks();
1914
1915         if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1916                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1917                 pr_info("Brightness must be controlled by "
1918                        "generic video driver\n");
1919         }
1920
1921         if (wmi_has_guid(WMID_GUID3)) {
1922                 if (ec_raw_mode) {
1923                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1924                                 pr_err("Cannot enable EC raw mode\n");
1925                                 return -ENODEV;
1926                         }
1927                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1928                         pr_err("Cannot enable Launch Manager mode\n");
1929                         return -ENODEV;
1930                 }
1931         } else if (ec_raw_mode) {
1932                 pr_info("No WMID EC raw mode enable method\n");
1933         }
1934
1935         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1936                 err = acer_wmi_input_setup();
1937                 if (err)
1938                         return err;
1939         }
1940
1941         err = platform_driver_register(&acer_platform_driver);
1942         if (err) {
1943                 pr_err("Unable to register platform driver.\n");
1944                 goto error_platform_register;
1945         }
1946
1947         acer_platform_device = platform_device_alloc("acer-wmi", -1);
1948         if (!acer_platform_device) {
1949                 err = -ENOMEM;
1950                 goto error_device_alloc;
1951         }
1952
1953         err = platform_device_add(acer_platform_device);
1954         if (err)
1955                 goto error_device_add;
1956
1957         err = create_sysfs();
1958         if (err)
1959                 goto error_create_sys;
1960
1961         if (wmi_has_guid(WMID_GUID2)) {
1962                 interface->debug.wmid_devices = get_wmid_devices();
1963                 err = create_debugfs();
1964                 if (err)
1965                         goto error_create_debugfs;
1966         }
1967
1968         /* Override any initial settings with values from the commandline */
1969         acer_commandline_init();
1970
1971         return 0;
1972
1973 error_create_debugfs:
1974         remove_sysfs(acer_platform_device);
1975 error_create_sys:
1976         platform_device_del(acer_platform_device);
1977 error_device_add:
1978         platform_device_put(acer_platform_device);
1979 error_device_alloc:
1980         platform_driver_unregister(&acer_platform_driver);
1981 error_platform_register:
1982         if (wmi_has_guid(ACERWMID_EVENT_GUID))
1983                 acer_wmi_input_destroy();
1984
1985         return err;
1986 }
1987
1988 static void __exit acer_wmi_exit(void)
1989 {
1990         if (wmi_has_guid(ACERWMID_EVENT_GUID))
1991                 acer_wmi_input_destroy();
1992
1993         remove_sysfs(acer_platform_device);
1994         remove_debugfs();
1995         platform_device_unregister(acer_platform_device);
1996         platform_driver_unregister(&acer_platform_driver);
1997
1998         pr_info("Acer Laptop WMI Extras unloaded\n");
1999         return;
2000 }
2001
2002 module_init(acer_wmi_init);
2003 module_exit(acer_wmi_exit);