linux/drivers/platform/x86/acer-wmi.c
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   1/*
   2 *  Acer WMI Laptop Extras
   3 *
   4 *  Copyright (C) 2007-2009     Carlos Corbacho <carlos@strangeworlds.co.uk>
   5 *
   6 *  Based on acer_acpi:
   7 *    Copyright (C) 2005-2007   E.M. Smith
   8 *    Copyright (C) 2007-2008   Carlos Corbacho <cathectic@gmail.com>
   9 *
  10 *  This program is free software; you can redistribute it and/or modify
  11 *  it under the terms of the GNU General Public License as published by
  12 *  the Free Software Foundation; either version 2 of the License, or
  13 *  (at your option) any later version.
  14 *
  15 *  This program is distributed in the hope that it will be useful,
  16 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 *  GNU General Public License for more details.
  19 *
  20 *  You should have received a copy of the GNU General Public License
  21 *  along with this program; if not, write to the Free Software
  22 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23 */
  24
  25#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  26
  27#include <linux/kernel.h>
  28#include <linux/module.h>
  29#include <linux/init.h>
  30#include <linux/types.h>
  31#include <linux/dmi.h>
  32#include <linux/fb.h>
  33#include <linux/backlight.h>
  34#include <linux/leds.h>
  35#include <linux/platform_device.h>
  36#include <linux/acpi.h>
  37#include <linux/i8042.h>
  38#include <linux/rfkill.h>
  39#include <linux/workqueue.h>
  40#include <linux/debugfs.h>
  41#include <linux/slab.h>
  42#include <linux/input.h>
  43#include <linux/input/sparse-keymap.h>
  44
  45#include <acpi/acpi_drivers.h>
  46#include <acpi/video.h>
  47
  48MODULE_AUTHOR("Carlos Corbacho");
  49MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
  50MODULE_LICENSE("GPL");
  51
  52/*
  53 * Magic Number
  54 * Meaning is unknown - this number is required for writing to ACPI for AMW0
  55 * (it's also used in acerhk when directly accessing the BIOS)
  56 */
  57#define ACER_AMW0_WRITE 0x9610
  58
  59/*
  60 * Bit masks for the AMW0 interface
  61 */
  62#define ACER_AMW0_WIRELESS_MASK  0x35
  63#define ACER_AMW0_BLUETOOTH_MASK 0x34
  64#define ACER_AMW0_MAILLED_MASK   0x31
  65
  66/*
  67 * Method IDs for WMID interface
  68 */
  69#define ACER_WMID_GET_WIRELESS_METHODID         1
  70#define ACER_WMID_GET_BLUETOOTH_METHODID        2
  71#define ACER_WMID_GET_BRIGHTNESS_METHODID       3
  72#define ACER_WMID_SET_WIRELESS_METHODID         4
  73#define ACER_WMID_SET_BLUETOOTH_METHODID        5
  74#define ACER_WMID_SET_BRIGHTNESS_METHODID       6
  75#define ACER_WMID_GET_THREEG_METHODID           10
  76#define ACER_WMID_SET_THREEG_METHODID           11
  77
  78/*
  79 * Acer ACPI method GUIDs
  80 */
  81#define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
  82#define AMW0_GUID2              "431F16ED-0C2B-444C-B267-27DEB140CF9C"
  83#define WMID_GUID1              "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
  84#define WMID_GUID2              "95764E09-FB56-4E83-B31A-37761F60994A"
  85#define WMID_GUID3              "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
  86
  87/*
  88 * Acer ACPI event GUIDs
  89 */
  90#define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
  91
  92MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
  93MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
  94MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
  95
  96enum acer_wmi_event_ids {
  97        WMID_HOTKEY_EVENT = 0x1,
  98        WMID_ACCEL_EVENT = 0x5,
  99};
 100
 101static const struct key_entry acer_wmi_keymap[] = {
 102        {KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
 103        {KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
 104        {KE_KEY, 0x04, {KEY_WLAN} },     /* WiFi */
 105        {KE_KEY, 0x12, {KEY_BLUETOOTH} },       /* BT */
 106        {KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
 107        {KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
 108        {KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
 109        {KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
 110        {KE_KEY, 0x29, {KEY_PROG3} },    /* P_Key for TM8372 */
 111        {KE_IGNORE, 0x41, {KEY_MUTE} },
 112        {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
 113        {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
 114        {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
 115        {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
 116        {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
 117        {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
 118        {KE_IGNORE, 0x45, {KEY_STOP} },
 119        {KE_IGNORE, 0x50, {KEY_STOP} },
 120        {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
 121        {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
 122        {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
 123        {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
 124        {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 125        {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 126        {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
 127        {KE_IGNORE, 0x81, {KEY_SLEEP} },
 128        {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
 129        {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 130        {KE_END, 0}
 131};
 132
 133static struct input_dev *acer_wmi_input_dev;
 134static struct input_dev *acer_wmi_accel_dev;
 135
 136struct event_return_value {
 137        u8 function;
 138        u8 key_num;
 139        u16 device_state;
 140        u32 reserved;
 141} __attribute__((packed));
 142
 143/*
 144 * GUID3 Get Device Status device flags
 145 */
 146#define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 147#define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 148#define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 149#define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 150
 151struct lm_input_params {
 152        u8 function_num;        /* Function Number */
 153        u16 commun_devices;     /* Communication type devices default status */
 154        u16 devices;            /* Other type devices default status */
 155        u8 lm_status;           /* Launch Manager Status */
 156        u16 reserved;
 157} __attribute__((packed));
 158
 159struct lm_return_value {
 160        u8 error_code;          /* Error Code */
 161        u8 ec_return_value;     /* EC Return Value */
 162        u16 reserved;
 163} __attribute__((packed));
 164
 165struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 166        u8 function_num;        /* Function Number */
 167        u8 hotkey_number;       /* Hotkey Number */
 168        u16 devices;            /* Set Device */
 169        u8 volume_value;        /* Volume Value */
 170} __attribute__((packed));
 171
 172struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 173        u8 function_num;        /* Function Number */
 174        u8 hotkey_number;       /* Hotkey Number */
 175        u16 devices;            /* Get Device */
 176} __attribute__((packed));
 177
 178struct wmid3_gds_return_value { /* Get Device Status return value*/
 179        u8 error_code;          /* Error Code */
 180        u8 ec_return_value;     /* EC Return Value */
 181        u16 devices;            /* Current Device Status */
 182        u32 reserved;
 183} __attribute__((packed));
 184
 185struct hotkey_function_type_aa {
 186        u8 type;
 187        u8 length;
 188        u16 handle;
 189        u16 commun_func_bitmap;
 190        u16 application_func_bitmap;
 191        u16 media_func_bitmap;
 192        u16 display_func_bitmap;
 193        u16 others_func_bitmap;
 194        u8 commun_fn_key_number;
 195} __attribute__((packed));
 196
 197/*
 198 * Interface capability flags
 199 */
 200#define ACER_CAP_MAILLED                (1<<0)
 201#define ACER_CAP_WIRELESS               (1<<1)
 202#define ACER_CAP_BLUETOOTH              (1<<2)
 203#define ACER_CAP_BRIGHTNESS             (1<<3)
 204#define ACER_CAP_THREEG                 (1<<4)
 205#define ACER_CAP_ACCEL                  (1<<5)
 206#define ACER_CAP_ANY                    (0xFFFFFFFF)
 207
 208/*
 209 * Interface type flags
 210 */
 211enum interface_flags {
 212        ACER_AMW0,
 213        ACER_AMW0_V2,
 214        ACER_WMID,
 215        ACER_WMID_v2,
 216};
 217
 218#define ACER_DEFAULT_WIRELESS  0
 219#define ACER_DEFAULT_BLUETOOTH 0
 220#define ACER_DEFAULT_MAILLED   0
 221#define ACER_DEFAULT_THREEG    0
 222
 223static int max_brightness = 0xF;
 224
 225static int mailled = -1;
 226static int brightness = -1;
 227static int threeg = -1;
 228static int force_series;
 229static bool ec_raw_mode;
 230static bool has_type_aa;
 231static u16 commun_func_bitmap;
 232static u8 commun_fn_key_number;
 233
 234module_param(mailled, int, 0444);
 235module_param(brightness, int, 0444);
 236module_param(threeg, int, 0444);
 237module_param(force_series, int, 0444);
 238module_param(ec_raw_mode, bool, 0444);
 239MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 240MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 241MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 242MODULE_PARM_DESC(force_series, "Force a different laptop series");
 243MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 244
 245struct acer_data {
 246        int mailled;
 247        int threeg;
 248        int brightness;
 249};
 250
 251struct acer_debug {
 252        struct dentry *root;
 253        struct dentry *devices;
 254        u32 wmid_devices;
 255};
 256
 257static struct rfkill *wireless_rfkill;
 258static struct rfkill *bluetooth_rfkill;
 259static struct rfkill *threeg_rfkill;
 260static bool rfkill_inited;
 261
 262/* Each low-level interface must define at least some of the following */
 263struct wmi_interface {
 264        /* The WMI device type */
 265        u32 type;
 266
 267        /* The capabilities this interface provides */
 268        u32 capability;
 269
 270        /* Private data for the current interface */
 271        struct acer_data data;
 272
 273        /* debugfs entries associated with this interface */
 274        struct acer_debug debug;
 275};
 276
 277/* The static interface pointer, points to the currently detected interface */
 278static struct wmi_interface *interface;
 279
 280/*
 281 * Embedded Controller quirks
 282 * Some laptops require us to directly access the EC to either enable or query
 283 * features that are not available through WMI.
 284 */
 285
 286struct quirk_entry {
 287        u8 wireless;
 288        u8 mailled;
 289        s8 brightness;
 290        u8 bluetooth;
 291};
 292
 293static struct quirk_entry *quirks;
 294
 295static void set_quirks(void)
 296{
 297        if (!interface)
 298                return;
 299
 300        if (quirks->mailled)
 301                interface->capability |= ACER_CAP_MAILLED;
 302
 303        if (quirks->brightness)
 304                interface->capability |= ACER_CAP_BRIGHTNESS;
 305}
 306
 307static int dmi_matched(const struct dmi_system_id *dmi)
 308{
 309        quirks = dmi->driver_data;
 310        return 1;
 311}
 312
 313static struct quirk_entry quirk_unknown = {
 314};
 315
 316static struct quirk_entry quirk_acer_aspire_1520 = {
 317        .brightness = -1,
 318};
 319
 320static struct quirk_entry quirk_acer_travelmate_2490 = {
 321        .mailled = 1,
 322};
 323
 324/* This AMW0 laptop has no bluetooth */
 325static struct quirk_entry quirk_medion_md_98300 = {
 326        .wireless = 1,
 327};
 328
 329static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 330        .wireless = 2,
 331};
 332
 333static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 334        .wireless = 3,
 335};
 336
 337/* The Aspire One has a dummy ACPI-WMI interface - disable it */
 338static struct dmi_system_id __devinitdata acer_blacklist[] = {
 339        {
 340                .ident = "Acer Aspire One (SSD)",
 341                .matches = {
 342                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 343                        DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 344                },
 345        },
 346        {
 347                .ident = "Acer Aspire One (HDD)",
 348                .matches = {
 349                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 350                        DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 351                },
 352        },
 353        {}
 354};
 355
 356static struct dmi_system_id acer_quirks[] = {
 357        {
 358                .callback = dmi_matched,
 359                .ident = "Acer Aspire 1360",
 360                .matches = {
 361                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 362                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 363                },
 364                .driver_data = &quirk_acer_aspire_1520,
 365        },
 366        {
 367                .callback = dmi_matched,
 368                .ident = "Acer Aspire 1520",
 369                .matches = {
 370                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 371                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 372                },
 373                .driver_data = &quirk_acer_aspire_1520,
 374        },
 375        {
 376                .callback = dmi_matched,
 377                .ident = "Acer Aspire 3100",
 378                .matches = {
 379                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 380                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 381                },
 382                .driver_data = &quirk_acer_travelmate_2490,
 383        },
 384        {
 385                .callback = dmi_matched,
 386                .ident = "Acer Aspire 3610",
 387                .matches = {
 388                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 389                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 390                },
 391                .driver_data = &quirk_acer_travelmate_2490,
 392        },
 393        {
 394                .callback = dmi_matched,
 395                .ident = "Acer Aspire 5100",
 396                .matches = {
 397                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 398                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 399                },
 400                .driver_data = &quirk_acer_travelmate_2490,
 401        },
 402        {
 403                .callback = dmi_matched,
 404                .ident = "Acer Aspire 5610",
 405                .matches = {
 406                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 407                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 408                },
 409                .driver_data = &quirk_acer_travelmate_2490,
 410        },
 411        {
 412                .callback = dmi_matched,
 413                .ident = "Acer Aspire 5630",
 414                .matches = {
 415                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 416                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 417                },
 418                .driver_data = &quirk_acer_travelmate_2490,
 419        },
 420        {
 421                .callback = dmi_matched,
 422                .ident = "Acer Aspire 5650",
 423                .matches = {
 424                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 425                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 426                },
 427                .driver_data = &quirk_acer_travelmate_2490,
 428        },
 429        {
 430                .callback = dmi_matched,
 431                .ident = "Acer Aspire 5680",
 432                .matches = {
 433                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 434                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 435                },
 436                .driver_data = &quirk_acer_travelmate_2490,
 437        },
 438        {
 439                .callback = dmi_matched,
 440                .ident = "Acer Aspire 9110",
 441                .matches = {
 442                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 443                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 444                },
 445                .driver_data = &quirk_acer_travelmate_2490,
 446        },
 447        {
 448                .callback = dmi_matched,
 449                .ident = "Acer TravelMate 2490",
 450                .matches = {
 451                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 452                        DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 453                },
 454                .driver_data = &quirk_acer_travelmate_2490,
 455        },
 456        {
 457                .callback = dmi_matched,
 458                .ident = "Acer TravelMate 4200",
 459                .matches = {
 460                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 461                        DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 462                },
 463                .driver_data = &quirk_acer_travelmate_2490,
 464        },
 465        {
 466                .callback = dmi_matched,
 467                .ident = "Fujitsu Siemens Amilo Li 1718",
 468                .matches = {
 469                        DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 470                        DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 471                },
 472                .driver_data = &quirk_fujitsu_amilo_li_1718,
 473        },
 474        {
 475                .callback = dmi_matched,
 476                .ident = "Medion MD 98300",
 477                .matches = {
 478                        DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 479                        DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 480                },
 481                .driver_data = &quirk_medion_md_98300,
 482        },
 483        {
 484                .callback = dmi_matched,
 485                .ident = "Lenovo Ideapad S205",
 486                .matches = {
 487                        DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 488                        DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 489                },
 490                .driver_data = &quirk_lenovo_ideapad_s205,
 491        },
 492        {
 493                .callback = dmi_matched,
 494                .ident = "Lenovo Ideapad S205 (Brazos)",
 495                .matches = {
 496                        DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 497                        DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 498                },
 499                .driver_data = &quirk_lenovo_ideapad_s205,
 500        },
 501        {
 502                .callback = dmi_matched,
 503                .ident = "Lenovo 3000 N200",
 504                .matches = {
 505                        DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 506                        DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 507                },
 508                .driver_data = &quirk_fujitsu_amilo_li_1718,
 509        },
 510        {}
 511};
 512
 513static int video_set_backlight_video_vendor(const struct dmi_system_id *d)
 514{
 515        interface->capability &= ~ACER_CAP_BRIGHTNESS;
 516        pr_info("Brightness must be controlled by generic video driver\n");
 517        return 0;
 518}
 519
 520static const struct dmi_system_id video_vendor_dmi_table[] = {
 521        {
 522                .callback = video_set_backlight_video_vendor,
 523                .ident = "Acer TravelMate 4750",
 524                .matches = {
 525                        DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 526                        DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 527                },
 528        },
 529        {
 530                .callback = video_set_backlight_video_vendor,
 531                .ident = "Acer Extensa 5235",
 532                .matches = {
 533                        DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 534                        DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 535                },
 536        },
 537        {
 538                .callback = video_set_backlight_video_vendor,
 539                .ident = "Acer TravelMate 5760",
 540                .matches = {
 541                        DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 542                        DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 543                },
 544        },
 545        {
 546                .callback = video_set_backlight_video_vendor,
 547                .ident = "Acer Aspire 5750",
 548                .matches = {
 549                        DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 550                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 551                },
 552        },
 553        {}
 554};
 555
 556/* Find which quirks are needed for a particular vendor/ model pair */
 557static void find_quirks(void)
 558{
 559        if (!force_series) {
 560                dmi_check_system(acer_quirks);
 561        } else if (force_series == 2490) {
 562                quirks = &quirk_acer_travelmate_2490;
 563        }
 564
 565        if (quirks == NULL)
 566                quirks = &quirk_unknown;
 567
 568        set_quirks();
 569}
 570
 571/*
 572 * General interface convenience methods
 573 */
 574
 575static bool has_cap(u32 cap)
 576{
 577        if ((interface->capability & cap) != 0)
 578                return 1;
 579
 580        return 0;
 581}
 582
 583/*
 584 * AMW0 (V1) interface
 585 */
 586struct wmab_args {
 587        u32 eax;
 588        u32 ebx;
 589        u32 ecx;
 590        u32 edx;
 591};
 592
 593struct wmab_ret {
 594        u32 eax;
 595        u32 ebx;
 596        u32 ecx;
 597        u32 edx;
 598        u32 eex;
 599};
 600
 601static acpi_status wmab_execute(struct wmab_args *regbuf,
 602struct acpi_buffer *result)
 603{
 604        struct acpi_buffer input;
 605        acpi_status status;
 606        input.length = sizeof(struct wmab_args);
 607        input.pointer = (u8 *)regbuf;
 608
 609        status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
 610
 611        return status;
 612}
 613
 614static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 615{
 616        int err;
 617        u8 result;
 618
 619        switch (cap) {
 620        case ACER_CAP_MAILLED:
 621                switch (quirks->mailled) {
 622                default:
 623                        err = ec_read(0xA, &result);
 624                        if (err)
 625                                return AE_ERROR;
 626                        *value = (result >> 7) & 0x1;
 627                        return AE_OK;
 628                }
 629                break;
 630        case ACER_CAP_WIRELESS:
 631                switch (quirks->wireless) {
 632                case 1:
 633                        err = ec_read(0x7B, &result);
 634                        if (err)
 635                                return AE_ERROR;
 636                        *value = result & 0x1;
 637                        return AE_OK;
 638                case 2:
 639                        err = ec_read(0x71, &result);
 640                        if (err)
 641                                return AE_ERROR;
 642                        *value = result & 0x1;
 643                        return AE_OK;
 644                case 3:
 645                        err = ec_read(0x78, &result);
 646                        if (err)
 647                                return AE_ERROR;
 648                        *value = result & 0x1;
 649                        return AE_OK;
 650                default:
 651                        err = ec_read(0xA, &result);
 652                        if (err)
 653                                return AE_ERROR;
 654                        *value = (result >> 2) & 0x1;
 655                        return AE_OK;
 656                }
 657                break;
 658        case ACER_CAP_BLUETOOTH:
 659                switch (quirks->bluetooth) {
 660                default:
 661                        err = ec_read(0xA, &result);
 662                        if (err)
 663                                return AE_ERROR;
 664                        *value = (result >> 4) & 0x1;
 665                        return AE_OK;
 666                }
 667                break;
 668        case ACER_CAP_BRIGHTNESS:
 669                switch (quirks->brightness) {
 670                default:
 671                        err = ec_read(0x83, &result);
 672                        if (err)
 673                                return AE_ERROR;
 674                        *value = result;
 675                        return AE_OK;
 676                }
 677                break;
 678        default:
 679                return AE_ERROR;
 680        }
 681        return AE_OK;
 682}
 683
 684static acpi_status AMW0_set_u32(u32 value, u32 cap)
 685{
 686        struct wmab_args args;
 687
 688        args.eax = ACER_AMW0_WRITE;
 689        args.ebx = value ? (1<<8) : 0;
 690        args.ecx = args.edx = 0;
 691
 692        switch (cap) {
 693        case ACER_CAP_MAILLED:
 694                if (value > 1)
 695                        return AE_BAD_PARAMETER;
 696                args.ebx |= ACER_AMW0_MAILLED_MASK;
 697                break;
 698        case ACER_CAP_WIRELESS:
 699                if (value > 1)
 700                        return AE_BAD_PARAMETER;
 701                args.ebx |= ACER_AMW0_WIRELESS_MASK;
 702                break;
 703        case ACER_CAP_BLUETOOTH:
 704                if (value > 1)
 705                        return AE_BAD_PARAMETER;
 706                args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 707                break;
 708        case ACER_CAP_BRIGHTNESS:
 709                if (value > max_brightness)
 710                        return AE_BAD_PARAMETER;
 711                switch (quirks->brightness) {
 712                default:
 713                        return ec_write(0x83, value);
 714                        break;
 715                }
 716        default:
 717                return AE_ERROR;
 718        }
 719
 720        /* Actually do the set */
 721        return wmab_execute(&args, NULL);
 722}
 723
 724static acpi_status AMW0_find_mailled(void)
 725{
 726        struct wmab_args args;
 727        struct wmab_ret ret;
 728        acpi_status status = AE_OK;
 729        struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 730        union acpi_object *obj;
 731
 732        args.eax = 0x86;
 733        args.ebx = args.ecx = args.edx = 0;
 734
 735        status = wmab_execute(&args, &out);
 736        if (ACPI_FAILURE(status))
 737                return status;
 738
 739        obj = (union acpi_object *) out.pointer;
 740        if (obj && obj->type == ACPI_TYPE_BUFFER &&
 741        obj->buffer.length == sizeof(struct wmab_ret)) {
 742                ret = *((struct wmab_ret *) obj->buffer.pointer);
 743        } else {
 744                kfree(out.pointer);
 745                return AE_ERROR;
 746        }
 747
 748        if (ret.eex & 0x1)
 749                interface->capability |= ACER_CAP_MAILLED;
 750
 751        kfree(out.pointer);
 752
 753        return AE_OK;
 754}
 755
 756static int AMW0_set_cap_acpi_check_device_found;
 757
 758static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
 759        u32 level, void *context, void **retval)
 760{
 761        AMW0_set_cap_acpi_check_device_found = 1;
 762        return AE_OK;
 763}
 764
 765static const struct acpi_device_id norfkill_ids[] = {
 766        { "VPC2004", 0},
 767        { "IBM0068", 0},
 768        { "LEN0068", 0},
 769        { "SNY5001", 0},        /* sony-laptop in charge */
 770        { "", 0},
 771};
 772
 773static int AMW0_set_cap_acpi_check_device(void)
 774{
 775        const struct acpi_device_id *id;
 776
 777        for (id = norfkill_ids; id->id[0]; id++)
 778                acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
 779                                NULL, NULL);
 780        return AMW0_set_cap_acpi_check_device_found;
 781}
 782
 783static acpi_status AMW0_set_capabilities(void)
 784{
 785        struct wmab_args args;
 786        struct wmab_ret ret;
 787        acpi_status status;
 788        struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 789        union acpi_object *obj;
 790
 791        /*
 792         * On laptops with this strange GUID (non Acer), normal probing doesn't
 793         * work.
 794         */
 795        if (wmi_has_guid(AMW0_GUID2)) {
 796                if ((quirks != &quirk_unknown) ||
 797                    !AMW0_set_cap_acpi_check_device())
 798                        interface->capability |= ACER_CAP_WIRELESS;
 799                return AE_OK;
 800        }
 801
 802        args.eax = ACER_AMW0_WRITE;
 803        args.ecx = args.edx = 0;
 804
 805        args.ebx = 0xa2 << 8;
 806        args.ebx |= ACER_AMW0_WIRELESS_MASK;
 807
 808        status = wmab_execute(&args, &out);
 809        if (ACPI_FAILURE(status))
 810                return status;
 811
 812        obj = out.pointer;
 813        if (obj && obj->type == ACPI_TYPE_BUFFER &&
 814        obj->buffer.length == sizeof(struct wmab_ret)) {
 815                ret = *((struct wmab_ret *) obj->buffer.pointer);
 816        } else {
 817                status = AE_ERROR;
 818                goto out;
 819        }
 820
 821        if (ret.eax & 0x1)
 822                interface->capability |= ACER_CAP_WIRELESS;
 823
 824        args.ebx = 2 << 8;
 825        args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 826
 827        /*
 828         * It's ok to use existing buffer for next wmab_execute call.
 829         * But we need to kfree(out.pointer) if next wmab_execute fail.
 830         */
 831        status = wmab_execute(&args, &out);
 832        if (ACPI_FAILURE(status))
 833                goto out;
 834
 835        obj = (union acpi_object *) out.pointer;
 836        if (obj && obj->type == ACPI_TYPE_BUFFER
 837        && obj->buffer.length == sizeof(struct wmab_ret)) {
 838                ret = *((struct wmab_ret *) obj->buffer.pointer);
 839        } else {
 840                status = AE_ERROR;
 841                goto out;
 842        }
 843
 844        if (ret.eax & 0x1)
 845                interface->capability |= ACER_CAP_BLUETOOTH;
 846
 847        /*
 848         * This appears to be safe to enable, since all Wistron based laptops
 849         * appear to use the same EC register for brightness, even if they
 850         * differ for wireless, etc
 851         */
 852        if (quirks->brightness >= 0)
 853                interface->capability |= ACER_CAP_BRIGHTNESS;
 854
 855        status = AE_OK;
 856out:
 857        kfree(out.pointer);
 858        return status;
 859}
 860
 861static struct wmi_interface AMW0_interface = {
 862        .type = ACER_AMW0,
 863};
 864
 865static struct wmi_interface AMW0_V2_interface = {
 866        .type = ACER_AMW0_V2,
 867};
 868
 869/*
 870 * New interface (The WMID interface)
 871 */
 872static acpi_status
 873WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 874{
 875        struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 876        struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 877        union acpi_object *obj;
 878        u32 tmp;
 879        acpi_status status;
 880
 881        status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 882
 883        if (ACPI_FAILURE(status))
 884                return status;
 885
 886        obj = (union acpi_object *) result.pointer;
 887        if (obj && obj->type == ACPI_TYPE_BUFFER &&
 888                (obj->buffer.length == sizeof(u32) ||
 889                obj->buffer.length == sizeof(u64))) {
 890                tmp = *((u32 *) obj->buffer.pointer);
 891        } else if (obj->type == ACPI_TYPE_INTEGER) {
 892                tmp = (u32) obj->integer.value;
 893        } else {
 894                tmp = 0;
 895        }
 896
 897        if (out)
 898                *out = tmp;
 899
 900        kfree(result.pointer);
 901
 902        return status;
 903}
 904
 905static acpi_status WMID_get_u32(u32 *value, u32 cap)
 906{
 907        acpi_status status;
 908        u8 tmp;
 909        u32 result, method_id = 0;
 910
 911        switch (cap) {
 912        case ACER_CAP_WIRELESS:
 913                method_id = ACER_WMID_GET_WIRELESS_METHODID;
 914                break;
 915        case ACER_CAP_BLUETOOTH:
 916                method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 917                break;
 918        case ACER_CAP_BRIGHTNESS:
 919                method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 920                break;
 921        case ACER_CAP_THREEG:
 922                method_id = ACER_WMID_GET_THREEG_METHODID;
 923                break;
 924        case ACER_CAP_MAILLED:
 925                if (quirks->mailled == 1) {
 926                        ec_read(0x9f, &tmp);
 927                        *value = tmp & 0x1;
 928                        return 0;
 929                }
 930        default:
 931                return AE_ERROR;
 932        }
 933        status = WMI_execute_u32(method_id, 0, &result);
 934
 935        if (ACPI_SUCCESS(status))
 936                *value = (u8)result;
 937
 938        return status;
 939}
 940
 941static acpi_status WMID_set_u32(u32 value, u32 cap)
 942{
 943        u32 method_id = 0;
 944        char param;
 945
 946        switch (cap) {
 947        case ACER_CAP_BRIGHTNESS:
 948                if (value > max_brightness)
 949                        return AE_BAD_PARAMETER;
 950                method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
 951                break;
 952        case ACER_CAP_WIRELESS:
 953                if (value > 1)
 954                        return AE_BAD_PARAMETER;
 955                method_id = ACER_WMID_SET_WIRELESS_METHODID;
 956                break;
 957        case ACER_CAP_BLUETOOTH:
 958                if (value > 1)
 959                        return AE_BAD_PARAMETER;
 960                method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
 961                break;
 962        case ACER_CAP_THREEG:
 963                if (value > 1)
 964                        return AE_BAD_PARAMETER;
 965                method_id = ACER_WMID_SET_THREEG_METHODID;
 966                break;
 967        case ACER_CAP_MAILLED:
 968                if (value > 1)
 969                        return AE_BAD_PARAMETER;
 970                if (quirks->mailled == 1) {
 971                        param = value ? 0x92 : 0x93;
 972                        i8042_lock_chip();
 973                        i8042_command(&param, 0x1059);
 974                        i8042_unlock_chip();
 975                        return 0;
 976                }
 977                break;
 978        default:
 979                return AE_ERROR;
 980        }
 981        return WMI_execute_u32(method_id, (u32)value, NULL);
 982}
 983
 984static acpi_status wmid3_get_device_status(u32 *value, u16 device)
 985{
 986        struct wmid3_gds_return_value return_value;
 987        acpi_status status;
 988        union acpi_object *obj;
 989        struct wmid3_gds_get_input_param params = {
 990                .function_num = 0x1,
 991                .hotkey_number = commun_fn_key_number,
 992                .devices = device,
 993        };
 994        struct acpi_buffer input = {
 995                sizeof(struct wmid3_gds_get_input_param),
 996                &params
 997        };
 998        struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
 999
1000        status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1001        if (ACPI_FAILURE(status))
1002                return status;
1003
1004        obj = output.pointer;
1005
1006        if (!obj)
1007                return AE_ERROR;
1008        else if (obj->type != ACPI_TYPE_BUFFER) {
1009                kfree(obj);
1010                return AE_ERROR;
1011        }
1012        if (obj->buffer.length != 8) {
1013                pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1014                kfree(obj);
1015                return AE_ERROR;
1016        }
1017
1018        return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1019        kfree(obj);
1020
1021        if (return_value.error_code || return_value.ec_return_value)
1022                pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1023                        device,
1024                        return_value.error_code,
1025                        return_value.ec_return_value);
1026        else
1027                *value = !!(return_value.devices & device);
1028
1029        return status;
1030}
1031
1032static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1033{
1034        u16 device;
1035
1036        switch (cap) {
1037        case ACER_CAP_WIRELESS:
1038                device = ACER_WMID3_GDS_WIRELESS;
1039                break;
1040        case ACER_CAP_BLUETOOTH:
1041                device = ACER_WMID3_GDS_BLUETOOTH;
1042                break;
1043        case ACER_CAP_THREEG:
1044                device = ACER_WMID3_GDS_THREEG;
1045                break;
1046        default:
1047                return AE_ERROR;
1048        }
1049        return wmid3_get_device_status(value, device);
1050}
1051
1052static acpi_status wmid3_set_device_status(u32 value, u16 device)
1053{
1054        struct wmid3_gds_return_value return_value;
1055        acpi_status status;
1056        union acpi_object *obj;
1057        u16 devices;
1058        struct wmid3_gds_get_input_param get_params = {
1059                .function_num = 0x1,
1060                .hotkey_number = commun_fn_key_number,
1061                .devices = commun_func_bitmap,
1062        };
1063        struct acpi_buffer get_input = {
1064                sizeof(struct wmid3_gds_get_input_param),
1065                &get_params
1066        };
1067        struct wmid3_gds_set_input_param set_params = {
1068                .function_num = 0x2,
1069                .hotkey_number = commun_fn_key_number,
1070                .devices = commun_func_bitmap,
1071        };
1072        struct acpi_buffer set_input = {
1073                sizeof(struct wmid3_gds_set_input_param),
1074                &set_params
1075        };
1076        struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1077        struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1078
1079        status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1080        if (ACPI_FAILURE(status))
1081                return status;
1082
1083        obj = output.pointer;
1084
1085        if (!obj)
1086                return AE_ERROR;
1087        else if (obj->type != ACPI_TYPE_BUFFER) {
1088                kfree(obj);
1089                return AE_ERROR;
1090        }
1091        if (obj->buffer.length != 8) {
1092                pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1093                kfree(obj);
1094                return AE_ERROR;
1095        }
1096
1097        return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1098        kfree(obj);
1099
1100        if (return_value.error_code || return_value.ec_return_value) {
1101                pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1102                        return_value.error_code,
1103                        return_value.ec_return_value);
1104                return status;
1105        }
1106
1107        devices = return_value.devices;
1108        set_params.devices = (value) ? (devices | device) : (devices & ~device);
1109
1110        status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1111        if (ACPI_FAILURE(status))
1112                return status;
1113
1114        obj = output2.pointer;
1115
1116        if (!obj)
1117                return AE_ERROR;
1118        else if (obj->type != ACPI_TYPE_BUFFER) {
1119                kfree(obj);
1120                return AE_ERROR;
1121        }
1122        if (obj->buffer.length != 4) {
1123                pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1124                kfree(obj);
1125                return AE_ERROR;
1126        }
1127
1128        return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1129        kfree(obj);
1130
1131        if (return_value.error_code || return_value.ec_return_value)
1132                pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1133                        return_value.error_code,
1134                        return_value.ec_return_value);
1135
1136        return status;
1137}
1138
1139static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1140{
1141        u16 device;
1142
1143        switch (cap) {
1144        case ACER_CAP_WIRELESS:
1145                device = ACER_WMID3_GDS_WIRELESS;
1146                break;
1147        case ACER_CAP_BLUETOOTH:
1148                device = ACER_WMID3_GDS_BLUETOOTH;
1149                break;
1150        case ACER_CAP_THREEG:
1151                device = ACER_WMID3_GDS_THREEG;
1152                break;
1153        default:
1154                return AE_ERROR;
1155        }
1156        return wmid3_set_device_status(value, device);
1157}
1158
1159static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1160{
1161        struct hotkey_function_type_aa *type_aa;
1162
1163        /* We are looking for OEM-specific Type AAh */
1164        if (header->type != 0xAA)
1165                return;
1166
1167        has_type_aa = true;
1168        type_aa = (struct hotkey_function_type_aa *) header;
1169
1170        pr_info("Function bitmap for Communication Button: 0x%x\n",
1171                type_aa->commun_func_bitmap);
1172        commun_func_bitmap = type_aa->commun_func_bitmap;
1173
1174        if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1175                interface->capability |= ACER_CAP_WIRELESS;
1176        if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1177                interface->capability |= ACER_CAP_THREEG;
1178        if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1179                interface->capability |= ACER_CAP_BLUETOOTH;
1180
1181        commun_fn_key_number = type_aa->commun_fn_key_number;
1182}
1183
1184static acpi_status WMID_set_capabilities(void)
1185{
1186        struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1187        union acpi_object *obj;
1188        acpi_status status;
1189        u32 devices;
1190
1191        status = wmi_query_block(WMID_GUID2, 1, &out);
1192        if (ACPI_FAILURE(status))
1193                return status;
1194
1195        obj = (union acpi_object *) out.pointer;
1196        if (obj && obj->type == ACPI_TYPE_BUFFER &&
1197                (obj->buffer.length == sizeof(u32) ||
1198                obj->buffer.length == sizeof(u64))) {
1199                devices = *((u32 *) obj->buffer.pointer);
1200        } else if (obj->type == ACPI_TYPE_INTEGER) {
1201                devices = (u32) obj->integer.value;
1202        } else {
1203                kfree(out.pointer);
1204                return AE_ERROR;
1205        }
1206
1207        pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1208        if (devices & 0x07)
1209                interface->capability |= ACER_CAP_WIRELESS;
1210        if (devices & 0x40)
1211                interface->capability |= ACER_CAP_THREEG;
1212        if (devices & 0x10)
1213                interface->capability |= ACER_CAP_BLUETOOTH;
1214
1215        if (!(devices & 0x20))
1216                max_brightness = 0x9;
1217
1218        kfree(out.pointer);
1219        return status;
1220}
1221
1222static struct wmi_interface wmid_interface = {
1223        .type = ACER_WMID,
1224};
1225
1226static struct wmi_interface wmid_v2_interface = {
1227        .type = ACER_WMID_v2,
1228};
1229
1230/*
1231 * Generic Device (interface-independent)
1232 */
1233
1234static acpi_status get_u32(u32 *value, u32 cap)
1235{
1236        acpi_status status = AE_ERROR;
1237
1238        switch (interface->type) {
1239        case ACER_AMW0:
1240                status = AMW0_get_u32(value, cap);
1241                break;
1242        case ACER_AMW0_V2:
1243                if (cap == ACER_CAP_MAILLED) {
1244                        status = AMW0_get_u32(value, cap);
1245                        break;
1246                }
1247        case ACER_WMID:
1248                status = WMID_get_u32(value, cap);
1249                break;
1250        case ACER_WMID_v2:
1251                if (cap & (ACER_CAP_WIRELESS |
1252                           ACER_CAP_BLUETOOTH |
1253                           ACER_CAP_THREEG))
1254                        status = wmid_v2_get_u32(value, cap);
1255                else if (wmi_has_guid(WMID_GUID2))
1256                        status = WMID_get_u32(value, cap);
1257                break;
1258        }
1259
1260        return status;
1261}
1262
1263static acpi_status set_u32(u32 value, u32 cap)
1264{
1265        acpi_status status;
1266
1267        if (interface->capability & cap) {
1268                switch (interface->type) {
1269                case ACER_AMW0:
1270                        return AMW0_set_u32(value, cap);
1271                case ACER_AMW0_V2:
1272                        if (cap == ACER_CAP_MAILLED)
1273                                return AMW0_set_u32(value, cap);
1274
1275                        /*
1276                         * On some models, some WMID methods don't toggle
1277                         * properly. For those cases, we want to run the AMW0
1278                         * method afterwards to be certain we've really toggled
1279                         * the device state.
1280                         */
1281                        if (cap == ACER_CAP_WIRELESS ||
1282                                cap == ACER_CAP_BLUETOOTH) {
1283                                status = WMID_set_u32(value, cap);
1284                                if (ACPI_FAILURE(status))
1285                                        return status;
1286
1287                                return AMW0_set_u32(value, cap);
1288                        }
1289                case ACER_WMID:
1290                        return WMID_set_u32(value, cap);
1291                case ACER_WMID_v2:
1292                        if (cap & (ACER_CAP_WIRELESS |
1293                                   ACER_CAP_BLUETOOTH |
1294                                   ACER_CAP_THREEG))
1295                                return wmid_v2_set_u32(value, cap);
1296                        else if (wmi_has_guid(WMID_GUID2))
1297                                return WMID_set_u32(value, cap);
1298                default:
1299                        return AE_BAD_PARAMETER;
1300                }
1301        }
1302        return AE_BAD_PARAMETER;
1303}
1304
1305static void __init acer_commandline_init(void)
1306{
1307        /*
1308         * These will all fail silently if the value given is invalid, or the
1309         * capability isn't available on the given interface
1310         */
1311        if (mailled >= 0)
1312                set_u32(mailled, ACER_CAP_MAILLED);
1313        if (!has_type_aa && threeg >= 0)
1314                set_u32(threeg, ACER_CAP_THREEG);
1315        if (brightness >= 0)
1316                set_u32(brightness, ACER_CAP_BRIGHTNESS);
1317}
1318
1319/*
1320 * LED device (Mail LED only, no other LEDs known yet)
1321 */
1322static void mail_led_set(struct led_classdev *led_cdev,
1323enum led_brightness value)
1324{
1325        set_u32(value, ACER_CAP_MAILLED);
1326}
1327
1328static struct led_classdev mail_led = {
1329        .name = "acer-wmi::mail",
1330        .brightness_set = mail_led_set,
1331};
1332
1333static int __devinit acer_led_init(struct device *dev)
1334{
1335        return led_classdev_register(dev, &mail_led);
1336}
1337
1338static void acer_led_exit(void)
1339{
1340        set_u32(LED_OFF, ACER_CAP_MAILLED);
1341        led_classdev_unregister(&mail_led);
1342}
1343
1344/*
1345 * Backlight device
1346 */
1347static struct backlight_device *acer_backlight_device;
1348
1349static int read_brightness(struct backlight_device *bd)
1350{
1351        u32 value;
1352        get_u32(&value, ACER_CAP_BRIGHTNESS);
1353        return value;
1354}
1355
1356static int update_bl_status(struct backlight_device *bd)
1357{
1358        int intensity = bd->props.brightness;
1359
1360        if (bd->props.power != FB_BLANK_UNBLANK)
1361                intensity = 0;
1362        if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1363                intensity = 0;
1364
1365        set_u32(intensity, ACER_CAP_BRIGHTNESS);
1366
1367        return 0;
1368}
1369
1370static const struct backlight_ops acer_bl_ops = {
1371        .get_brightness = read_brightness,
1372        .update_status = update_bl_status,
1373};
1374
1375static int __devinit acer_backlight_init(struct device *dev)
1376{
1377        struct backlight_properties props;
1378        struct backlight_device *bd;
1379
1380        memset(&props, 0, sizeof(struct backlight_properties));
1381        props.type = BACKLIGHT_PLATFORM;
1382        props.max_brightness = max_brightness;
1383        bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1384                                       &props);
1385        if (IS_ERR(bd)) {
1386                pr_err("Could not register Acer backlight device\n");
1387                acer_backlight_device = NULL;
1388                return PTR_ERR(bd);
1389        }
1390
1391        acer_backlight_device = bd;
1392
1393        bd->props.power = FB_BLANK_UNBLANK;
1394        bd->props.brightness = read_brightness(bd);
1395        backlight_update_status(bd);
1396        return 0;
1397}
1398
1399static void acer_backlight_exit(void)
1400{
1401        backlight_device_unregister(acer_backlight_device);
1402}
1403
1404/*
1405 * Accelerometer device
1406 */
1407static acpi_handle gsensor_handle;
1408
1409static int acer_gsensor_init(void)
1410{
1411        acpi_status status;
1412        struct acpi_buffer output;
1413        union acpi_object out_obj;
1414
1415        output.length = sizeof(out_obj);
1416        output.pointer = &out_obj;
1417        status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1418        if (ACPI_FAILURE(status))
1419                return -1;
1420
1421        return 0;
1422}
1423
1424static int acer_gsensor_open(struct input_dev *input)
1425{
1426        return acer_gsensor_init();
1427}
1428
1429static int acer_gsensor_event(void)
1430{
1431        acpi_status status;
1432        struct acpi_buffer output;
1433        union acpi_object out_obj[5];
1434
1435        if (!has_cap(ACER_CAP_ACCEL))
1436                return -1;
1437
1438        output.length = sizeof(out_obj);
1439        output.pointer = out_obj;
1440
1441        status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1442        if (ACPI_FAILURE(status))
1443                return -1;
1444
1445        if (out_obj->package.count != 4)
1446                return -1;
1447
1448        input_report_abs(acer_wmi_accel_dev, ABS_X,
1449                (s16)out_obj->package.elements[0].integer.value);
1450        input_report_abs(acer_wmi_accel_dev, ABS_Y,
1451                (s16)out_obj->package.elements[1].integer.value);
1452        input_report_abs(acer_wmi_accel_dev, ABS_Z,
1453                (s16)out_obj->package.elements[2].integer.value);
1454        input_sync(acer_wmi_accel_dev);
1455        return 0;
1456}
1457
1458/*
1459 * Rfkill devices
1460 */
1461static void acer_rfkill_update(struct work_struct *ignored);
1462static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1463static void acer_rfkill_update(struct work_struct *ignored)
1464{
1465        u32 state;
1466        acpi_status status;
1467
1468        if (has_cap(ACER_CAP_WIRELESS)) {
1469                status = get_u32(&state, ACER_CAP_WIRELESS);
1470                if (ACPI_SUCCESS(status)) {
1471                        if (quirks->wireless == 3)
1472                                rfkill_set_hw_state(wireless_rfkill, !state);
1473                        else
1474                                rfkill_set_sw_state(wireless_rfkill, !state);
1475                }
1476        }
1477
1478        if (has_cap(ACER_CAP_BLUETOOTH)) {
1479                status = get_u32(&state, ACER_CAP_BLUETOOTH);
1480                if (ACPI_SUCCESS(status))
1481                        rfkill_set_sw_state(bluetooth_rfkill, !state);
1482        }
1483
1484        if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1485                status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1486                if (ACPI_SUCCESS(status))
1487                        rfkill_set_sw_state(threeg_rfkill, !state);
1488        }
1489
1490        schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1491}
1492
1493static int acer_rfkill_set(void *data, bool blocked)
1494{
1495        acpi_status status;
1496        u32 cap = (unsigned long)data;
1497
1498        if (rfkill_inited) {
1499                status = set_u32(!blocked, cap);
1500                if (ACPI_FAILURE(status))
1501                        return -ENODEV;
1502        }
1503
1504        return 0;
1505}
1506
1507static const struct rfkill_ops acer_rfkill_ops = {
1508        .set_block = acer_rfkill_set,
1509};
1510
1511static struct rfkill *acer_rfkill_register(struct device *dev,
1512                                           enum rfkill_type type,
1513                                           char *name, u32 cap)
1514{
1515        int err;
1516        struct rfkill *rfkill_dev;
1517        u32 state;
1518        acpi_status status;
1519
1520        rfkill_dev = rfkill_alloc(name, dev, type,
1521                                  &acer_rfkill_ops,
1522                                  (void *)(unsigned long)cap);
1523        if (!rfkill_dev)
1524                return ERR_PTR(-ENOMEM);
1525
1526        status = get_u32(&state, cap);
1527
1528        err = rfkill_register(rfkill_dev);
1529        if (err) {
1530                rfkill_destroy(rfkill_dev);
1531                return ERR_PTR(err);
1532        }
1533
1534        if (ACPI_SUCCESS(status))
1535                rfkill_set_sw_state(rfkill_dev, !state);
1536
1537        return rfkill_dev;
1538}
1539
1540static int acer_rfkill_init(struct device *dev)
1541{
1542        int err;
1543
1544        if (has_cap(ACER_CAP_WIRELESS)) {
1545                wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1546                        "acer-wireless", ACER_CAP_WIRELESS);
1547                if (IS_ERR(wireless_rfkill)) {
1548                        err = PTR_ERR(wireless_rfkill);
1549                        goto error_wireless;
1550                }
1551        }
1552
1553        if (has_cap(ACER_CAP_BLUETOOTH)) {
1554                bluetooth_rfkill = acer_rfkill_register(dev,
1555                        RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1556                        ACER_CAP_BLUETOOTH);
1557                if (IS_ERR(bluetooth_rfkill)) {
1558                        err = PTR_ERR(bluetooth_rfkill);
1559                        goto error_bluetooth;
1560                }
1561        }
1562
1563        if (has_cap(ACER_CAP_THREEG)) {
1564                threeg_rfkill = acer_rfkill_register(dev,
1565                        RFKILL_TYPE_WWAN, "acer-threeg",
1566                        ACER_CAP_THREEG);
1567                if (IS_ERR(threeg_rfkill)) {
1568                        err = PTR_ERR(threeg_rfkill);
1569                        goto error_threeg;
1570                }
1571        }
1572
1573        rfkill_inited = true;
1574
1575        if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1576            has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1577                schedule_delayed_work(&acer_rfkill_work,
1578                        round_jiffies_relative(HZ));
1579
1580        return 0;
1581
1582error_threeg:
1583        if (has_cap(ACER_CAP_BLUETOOTH)) {
1584                rfkill_unregister(bluetooth_rfkill);
1585                rfkill_destroy(bluetooth_rfkill);
1586        }
1587error_bluetooth:
1588        if (has_cap(ACER_CAP_WIRELESS)) {
1589                rfkill_unregister(wireless_rfkill);
1590                rfkill_destroy(wireless_rfkill);
1591        }
1592error_wireless:
1593        return err;
1594}
1595
1596static void acer_rfkill_exit(void)
1597{
1598        if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1599            has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1600                cancel_delayed_work_sync(&acer_rfkill_work);
1601
1602        if (has_cap(ACER_CAP_WIRELESS)) {
1603                rfkill_unregister(wireless_rfkill);
1604                rfkill_destroy(wireless_rfkill);
1605        }
1606
1607        if (has_cap(ACER_CAP_BLUETOOTH)) {
1608                rfkill_unregister(bluetooth_rfkill);
1609                rfkill_destroy(bluetooth_rfkill);
1610        }
1611
1612        if (has_cap(ACER_CAP_THREEG)) {
1613                rfkill_unregister(threeg_rfkill);
1614                rfkill_destroy(threeg_rfkill);
1615        }
1616        return;
1617}
1618
1619/*
1620 * sysfs interface
1621 */
1622static ssize_t show_bool_threeg(struct device *dev,
1623        struct device_attribute *attr, char *buf)
1624{
1625        u32 result; \
1626        acpi_status status;
1627
1628        pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1629                current->comm);
1630        status = get_u32(&result, ACER_CAP_THREEG);
1631        if (ACPI_SUCCESS(status))
1632                return sprintf(buf, "%u\n", result);
1633        return sprintf(buf, "Read error\n");
1634}
1635
1636static ssize_t set_bool_threeg(struct device *dev,
1637        struct device_attribute *attr, const char *buf, size_t count)
1638{
1639        u32 tmp = simple_strtoul(buf, NULL, 10);
1640        acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1641        pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1642                current->comm);
1643        if (ACPI_FAILURE(status))
1644                return -EINVAL;
1645        return count;
1646}
1647static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1648        set_bool_threeg);
1649
1650static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1651        char *buf)
1652{
1653        pr_info("This interface sysfs will be removed in 2012 - used by: %s\n",
1654                current->comm);
1655        switch (interface->type) {
1656        case ACER_AMW0:
1657                return sprintf(buf, "AMW0\n");
1658        case ACER_AMW0_V2:
1659                return sprintf(buf, "AMW0 v2\n");
1660        case ACER_WMID:
1661                return sprintf(buf, "WMID\n");
1662        case ACER_WMID_v2:
1663                return sprintf(buf, "WMID v2\n");
1664        default:
1665                return sprintf(buf, "Error!\n");
1666        }
1667}
1668
1669static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1670
1671static void acer_wmi_notify(u32 value, void *context)
1672{
1673        struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1674        union acpi_object *obj;
1675        struct event_return_value return_value;
1676        acpi_status status;
1677        u16 device_state;
1678        const struct key_entry *key;
1679
1680        status = wmi_get_event_data(value, &response);
1681        if (status != AE_OK) {
1682                pr_warn("bad event status 0x%x\n", status);
1683                return;
1684        }
1685
1686        obj = (union acpi_object *)response.pointer;
1687
1688        if (!obj)
1689                return;
1690        if (obj->type != ACPI_TYPE_BUFFER) {
1691                pr_warn("Unknown response received %d\n", obj->type);
1692                kfree(obj);
1693                return;
1694        }
1695        if (obj->buffer.length != 8) {
1696                pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1697                kfree(obj);
1698                return;
1699        }
1700
1701        return_value = *((struct event_return_value *)obj->buffer.pointer);
1702        kfree(obj);
1703
1704        switch (return_value.function) {
1705        case WMID_HOTKEY_EVENT:
1706                device_state = return_value.device_state;
1707                pr_debug("device state: 0x%x\n", device_state);
1708
1709                key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1710                                                        return_value.key_num);
1711                if (!key) {
1712                        pr_warn("Unknown key number - 0x%x\n",
1713                                return_value.key_num);
1714                } else {
1715                        switch (key->keycode) {
1716                        case KEY_WLAN:
1717                        case KEY_BLUETOOTH:
1718                                if (has_cap(ACER_CAP_WIRELESS))
1719                                        rfkill_set_sw_state(wireless_rfkill,
1720                                                !(device_state & ACER_WMID3_GDS_WIRELESS));
1721                                if (has_cap(ACER_CAP_THREEG))
1722                                        rfkill_set_sw_state(threeg_rfkill,
1723                                                !(device_state & ACER_WMID3_GDS_THREEG));
1724                                if (has_cap(ACER_CAP_BLUETOOTH))
1725                                        rfkill_set_sw_state(bluetooth_rfkill,
1726                                                !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1727                                break;
1728                        }
1729                        sparse_keymap_report_entry(acer_wmi_input_dev, key,
1730                                                   1, true);
1731                }
1732                break;
1733        case WMID_ACCEL_EVENT:
1734                acer_gsensor_event();
1735                break;
1736        default:
1737                pr_warn("Unknown function number - %d - %d\n",
1738                        return_value.function, return_value.key_num);
1739                break;
1740        }
1741}
1742
1743static acpi_status
1744wmid3_set_lm_mode(struct lm_input_params *params,
1745                  struct lm_return_value *return_value)
1746{
1747        acpi_status status;
1748        union acpi_object *obj;
1749
1750        struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1751        struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1752
1753        status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1754        if (ACPI_FAILURE(status))
1755                return status;
1756
1757        obj = output.pointer;
1758
1759        if (!obj)
1760                return AE_ERROR;
1761        else if (obj->type != ACPI_TYPE_BUFFER) {
1762                kfree(obj);
1763                return AE_ERROR;
1764        }
1765        if (obj->buffer.length != 4) {
1766                pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1767                kfree(obj);
1768                return AE_ERROR;
1769        }
1770
1771        *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1772        kfree(obj);
1773
1774        return status;
1775}
1776
1777static int acer_wmi_enable_ec_raw(void)
1778{
1779        struct lm_return_value return_value;
1780        acpi_status status;
1781        struct lm_input_params params = {
1782                .function_num = 0x1,
1783                .commun_devices = 0xFFFF,
1784                .devices = 0xFFFF,
1785                .lm_status = 0x00,            /* Launch Manager Deactive */
1786        };
1787
1788        status = wmid3_set_lm_mode(&params, &return_value);
1789
1790        if (return_value.error_code || return_value.ec_return_value)
1791                pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1792                        return_value.error_code,
1793                        return_value.ec_return_value);
1794        else
1795                pr_info("Enabled EC raw mode\n");
1796
1797        return status;
1798}
1799
1800static int acer_wmi_enable_lm(void)
1801{
1802        struct lm_return_value return_value;
1803        acpi_status status;
1804        struct lm_input_params params = {
1805                .function_num = 0x1,
1806                .commun_devices = 0xFFFF,
1807                .devices = 0xFFFF,
1808                .lm_status = 0x01,            /* Launch Manager Active */
1809        };
1810
1811        status = wmid3_set_lm_mode(&params, &return_value);
1812
1813        if (return_value.error_code || return_value.ec_return_value)
1814                pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1815                        return_value.error_code,
1816                        return_value.ec_return_value);
1817
1818        return status;
1819}
1820
1821static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1822                                                void *ctx, void **retval)
1823{
1824        *(acpi_handle *)retval = ah;
1825        return AE_OK;
1826}
1827
1828static int __init acer_wmi_get_handle(const char *name, const char *prop,
1829                                        acpi_handle *ah)
1830{
1831        acpi_status status;
1832        acpi_handle handle;
1833
1834        BUG_ON(!name || !ah);
1835
1836        handle = NULL;
1837        status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1838                                        (void *)name, &handle);
1839
1840        if (ACPI_SUCCESS(status)) {
1841                *ah = handle;
1842                return 0;
1843        } else {
1844                return -ENODEV;
1845        }
1846}
1847
1848static int __init acer_wmi_accel_setup(void)
1849{
1850        int err;
1851
1852        err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1853        if (err)
1854                return err;
1855
1856        interface->capability |= ACER_CAP_ACCEL;
1857
1858        acer_wmi_accel_dev = input_allocate_device();
1859        if (!acer_wmi_accel_dev)
1860                return -ENOMEM;
1861
1862        acer_wmi_accel_dev->open = acer_gsensor_open;
1863
1864        acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1865        acer_wmi_accel_dev->phys = "wmi/input1";
1866        acer_wmi_accel_dev->id.bustype = BUS_HOST;
1867        acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1868        input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1869        input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1870        input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1871
1872        err = input_register_device(acer_wmi_accel_dev);
1873        if (err)
1874                goto err_free_dev;
1875
1876        return 0;
1877
1878err_free_dev:
1879        input_free_device(acer_wmi_accel_dev);
1880        return err;
1881}
1882
1883static void acer_wmi_accel_destroy(void)
1884{
1885        input_unregister_device(acer_wmi_accel_dev);
1886}
1887
1888static int __init acer_wmi_input_setup(void)
1889{
1890        acpi_status status;
1891        int err;
1892
1893        acer_wmi_input_dev = input_allocate_device();
1894        if (!acer_wmi_input_dev)
1895                return -ENOMEM;
1896
1897        acer_wmi_input_dev->name = "Acer WMI hotkeys";
1898        acer_wmi_input_dev->phys = "wmi/input0";
1899        acer_wmi_input_dev->id.bustype = BUS_HOST;
1900
1901        err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1902        if (err)
1903                goto err_free_dev;
1904
1905        status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1906                                                acer_wmi_notify, NULL);
1907        if (ACPI_FAILURE(status)) {
1908                err = -EIO;
1909                goto err_free_keymap;
1910        }
1911
1912        err = input_register_device(acer_wmi_input_dev);
1913        if (err)
1914                goto err_uninstall_notifier;
1915
1916        return 0;
1917
1918err_uninstall_notifier:
1919        wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1920err_free_keymap:
1921        sparse_keymap_free(acer_wmi_input_dev);
1922err_free_dev:
1923        input_free_device(acer_wmi_input_dev);
1924        return err;
1925}
1926
1927static void acer_wmi_input_destroy(void)
1928{
1929        wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1930        sparse_keymap_free(acer_wmi_input_dev);
1931        input_unregister_device(acer_wmi_input_dev);
1932}
1933
1934/*
1935 * debugfs functions
1936 */
1937static u32 get_wmid_devices(void)
1938{
1939        struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1940        union acpi_object *obj;
1941        acpi_status status;
1942        u32 devices = 0;
1943
1944        status = wmi_query_block(WMID_GUID2, 1, &out);
1945        if (ACPI_FAILURE(status))
1946                return 0;
1947
1948        obj = (union acpi_object *) out.pointer;
1949        if (obj && obj->type == ACPI_TYPE_BUFFER &&
1950                (obj->buffer.length == sizeof(u32) ||
1951                obj->buffer.length == sizeof(u64))) {
1952                devices = *((u32 *) obj->buffer.pointer);
1953        } else if (obj->type == ACPI_TYPE_INTEGER) {
1954                devices = (u32) obj->integer.value;
1955        }
1956
1957        kfree(out.pointer);
1958        return devices;
1959}
1960
1961/*
1962 * Platform device
1963 */
1964static int __devinit acer_platform_probe(struct platform_device *device)
1965{
1966        int err;
1967
1968        if (has_cap(ACER_CAP_MAILLED)) {
1969                err = acer_led_init(&device->dev);
1970                if (err)
1971                        goto error_mailled;
1972        }
1973
1974        if (has_cap(ACER_CAP_BRIGHTNESS)) {
1975                err = acer_backlight_init(&device->dev);
1976                if (err)
1977                        goto error_brightness;
1978        }
1979
1980        err = acer_rfkill_init(&device->dev);
1981        if (err)
1982                goto error_rfkill;
1983
1984        return err;
1985
1986error_rfkill:
1987        if (has_cap(ACER_CAP_BRIGHTNESS))
1988                acer_backlight_exit();
1989error_brightness:
1990        if (has_cap(ACER_CAP_MAILLED))
1991                acer_led_exit();
1992error_mailled:
1993        return err;
1994}
1995
1996static int acer_platform_remove(struct platform_device *device)
1997{
1998        if (has_cap(ACER_CAP_MAILLED))
1999                acer_led_exit();
2000        if (has_cap(ACER_CAP_BRIGHTNESS))
2001                acer_backlight_exit();
2002
2003        acer_rfkill_exit();
2004        return 0;
2005}
2006
2007static int acer_suspend(struct device *dev)
2008{
2009        u32 value;
2010        struct acer_data *data = &interface->data;
2011
2012        if (!data)
2013                return -ENOMEM;
2014
2015        if (has_cap(ACER_CAP_MAILLED)) {
2016                get_u32(&value, ACER_CAP_MAILLED);
2017                set_u32(LED_OFF, ACER_CAP_MAILLED);
2018                data->mailled = value;
2019        }
2020
2021        if (has_cap(ACER_CAP_BRIGHTNESS)) {
2022                get_u32(&value, ACER_CAP_BRIGHTNESS);
2023                data->brightness = value;
2024        }
2025
2026        return 0;
2027}
2028
2029static int acer_resume(struct device *dev)
2030{
2031        struct acer_data *data = &interface->data;
2032
2033        if (!data)
2034                return -ENOMEM;
2035
2036        if (has_cap(ACER_CAP_MAILLED))
2037                set_u32(data->mailled, ACER_CAP_MAILLED);
2038
2039        if (has_cap(ACER_CAP_BRIGHTNESS))
2040                set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2041
2042        if (has_cap(ACER_CAP_ACCEL))
2043                acer_gsensor_init();
2044
2045        return 0;
2046}
2047
2048static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2049
2050static void acer_platform_shutdown(struct platform_device *device)
2051{
2052        struct acer_data *data = &interface->data;
2053
2054        if (!data)
2055                return;
2056
2057        if (has_cap(ACER_CAP_MAILLED))
2058                set_u32(LED_OFF, ACER_CAP_MAILLED);
2059}
2060
2061static struct platform_driver acer_platform_driver = {
2062        .driver = {
2063                .name = "acer-wmi",
2064                .owner = THIS_MODULE,
2065                .pm = &acer_pm,
2066        },
2067        .probe = acer_platform_probe,
2068        .remove = acer_platform_remove,
2069        .shutdown = acer_platform_shutdown,
2070};
2071
2072static struct platform_device *acer_platform_device;
2073
2074static int remove_sysfs(struct platform_device *device)
2075{
2076        if (has_cap(ACER_CAP_THREEG))
2077                device_remove_file(&device->dev, &dev_attr_threeg);
2078
2079        device_remove_file(&device->dev, &dev_attr_interface);
2080
2081        return 0;
2082}
2083
2084static int create_sysfs(void)
2085{
2086        int retval = -ENOMEM;
2087
2088        if (has_cap(ACER_CAP_THREEG)) {
2089                retval = device_create_file(&acer_platform_device->dev,
2090                        &dev_attr_threeg);
2091                if (retval)
2092                        goto error_sysfs;
2093        }
2094
2095        retval = device_create_file(&acer_platform_device->dev,
2096                &dev_attr_interface);
2097        if (retval)
2098                goto error_sysfs;
2099
2100        return 0;
2101
2102error_sysfs:
2103                remove_sysfs(acer_platform_device);
2104        return retval;
2105}
2106
2107static void remove_debugfs(void)
2108{
2109        debugfs_remove(interface->debug.devices);
2110        debugfs_remove(interface->debug.root);
2111}
2112
2113static int create_debugfs(void)
2114{
2115        interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2116        if (!interface->debug.root) {
2117                pr_err("Failed to create debugfs directory");
2118                return -ENOMEM;
2119        }
2120
2121        interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2122                                        interface->debug.root,
2123                                        &interface->debug.wmid_devices);
2124        if (!interface->debug.devices)
2125                goto error_debugfs;
2126
2127        return 0;
2128
2129error_debugfs:
2130        remove_debugfs();
2131        return -ENOMEM;
2132}
2133
2134static int __init acer_wmi_init(void)
2135{
2136        int err;
2137
2138        pr_info("Acer Laptop ACPI-WMI Extras\n");
2139
2140        if (dmi_check_system(acer_blacklist)) {
2141                pr_info("Blacklisted hardware detected - not loading\n");
2142                return -ENODEV;
2143        }
2144
2145        find_quirks();
2146
2147        /*
2148         * Detect which ACPI-WMI interface we're using.
2149         */
2150        if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2151                interface = &AMW0_V2_interface;
2152
2153        if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2154                interface = &wmid_interface;
2155
2156        if (wmi_has_guid(WMID_GUID3))
2157                interface = &wmid_v2_interface;
2158
2159        if (interface)
2160                dmi_walk(type_aa_dmi_decode, NULL);
2161
2162        if (wmi_has_guid(WMID_GUID2) && interface) {
2163                if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2164                        pr_err("Unable to detect available WMID devices\n");
2165                        return -ENODEV;
2166                }
2167                /* WMID always provides brightness methods */
2168                interface->capability |= ACER_CAP_BRIGHTNESS;
2169        } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2170                pr_err("No WMID device detection method found\n");
2171                return -ENODEV;
2172        }
2173
2174        if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2175                interface = &AMW0_interface;
2176
2177                if (ACPI_FAILURE(AMW0_set_capabilities())) {
2178                        pr_err("Unable to detect available AMW0 devices\n");
2179                        return -ENODEV;
2180                }
2181        }
2182
2183        if (wmi_has_guid(AMW0_GUID1))
2184                AMW0_find_mailled();
2185
2186        if (!interface) {
2187                pr_err("No or unsupported WMI interface, unable to load\n");
2188                return -ENODEV;
2189        }
2190
2191        set_quirks();
2192
2193        if (dmi_check_system(video_vendor_dmi_table))
2194                acpi_video_dmi_promote_vendor();
2195        if (acpi_video_backlight_support()) {
2196                interface->capability &= ~ACER_CAP_BRIGHTNESS;
2197                pr_info("Brightness must be controlled by acpi video driver\n");
2198        } else {
2199                pr_info("Disabling ACPI video driver\n");
2200                acpi_video_unregister();
2201        }
2202
2203        if (wmi_has_guid(WMID_GUID3)) {
2204                if (ec_raw_mode) {
2205                        if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2206                                pr_err("Cannot enable EC raw mode\n");
2207                                return -ENODEV;
2208                        }
2209                } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2210                        pr_err("Cannot enable Launch Manager mode\n");
2211                        return -ENODEV;
2212                }
2213        } else if (ec_raw_mode) {
2214                pr_info("No WMID EC raw mode enable method\n");
2215        }
2216
2217        if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2218                err = acer_wmi_input_setup();
2219                if (err)
2220                        return err;
2221        }
2222
2223        acer_wmi_accel_setup();
2224
2225        err = platform_driver_register(&acer_platform_driver);
2226        if (err) {
2227                pr_err("Unable to register platform driver\n");
2228                goto error_platform_register;
2229        }
2230
2231        acer_platform_device = platform_device_alloc("acer-wmi", -1);
2232        if (!acer_platform_device) {
2233                err = -ENOMEM;
2234                goto error_device_alloc;
2235        }
2236
2237        err = platform_device_add(acer_platform_device);
2238        if (err)
2239                goto error_device_add;
2240
2241        err = create_sysfs();
2242        if (err)
2243                goto error_create_sys;
2244
2245        if (wmi_has_guid(WMID_GUID2)) {
2246                interface->debug.wmid_devices = get_wmid_devices();
2247                err = create_debugfs();
2248                if (err)
2249                        goto error_create_debugfs;
2250        }
2251
2252        /* Override any initial settings with values from the commandline */
2253        acer_commandline_init();
2254
2255        return 0;
2256
2257error_create_debugfs:
2258        remove_sysfs(acer_platform_device);
2259error_create_sys:
2260        platform_device_del(acer_platform_device);
2261error_device_add:
2262        platform_device_put(acer_platform_device);
2263error_device_alloc:
2264        platform_driver_unregister(&acer_platform_driver);
2265error_platform_register:
2266        if (wmi_has_guid(ACERWMID_EVENT_GUID))
2267                acer_wmi_input_destroy();
2268        if (has_cap(ACER_CAP_ACCEL))
2269                acer_wmi_accel_destroy();
2270
2271        return err;
2272}
2273
2274static void __exit acer_wmi_exit(void)
2275{
2276        if (wmi_has_guid(ACERWMID_EVENT_GUID))
2277                acer_wmi_input_destroy();
2278
2279        if (has_cap(ACER_CAP_ACCEL))
2280                acer_wmi_accel_destroy();
2281
2282        remove_sysfs(acer_platform_device);
2283        remove_debugfs();
2284        platform_device_unregister(acer_platform_device);
2285        platform_driver_unregister(&acer_platform_driver);
2286
2287        pr_info("Acer Laptop WMI Extras unloaded\n");
2288        return;
2289}
2290
2291module_init(acer_wmi_init);
2292module_exit(acer_wmi_exit);
2293