drivers/platform/x86/acer-wmi.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Acer WMI Laptop Extras
   4  *
   5  *  Copyright (C) 2007-2009     Carlos Corbacho <carlos@strangeworlds.co.uk>
   6  *
   7  *  Based on acer_acpi:
   8  *    Copyright (C) 2005-2007   E.M. Smith
   9  *    Copyright (C) 2007-2008   Carlos Corbacho <cathectic@gmail.com>
  10  */
  11
  12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  13
  14 #include <linux/kernel.h>
  15 #include <linux/module.h>
  16 #include <linux/init.h>
  17 #include <linux/types.h>
  18 #include <linux/dmi.h>
  19 #include <linux/fb.h>
  20 #include <linux/backlight.h>
  21 #include <linux/leds.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/acpi.h>
  24 #include <linux/i8042.h>
  25 #include <linux/rfkill.h>
  26 #include <linux/workqueue.h>
  27 #include <linux/debugfs.h>
  28 #include <linux/slab.h>
  29 #include <linux/input.h>
  30 #include <linux/input/sparse-keymap.h>
  31 #include <acpi/video.h>
  32
  33 MODULE_AUTHOR("Carlos Corbacho");
  34 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
  35 MODULE_LICENSE("GPL");
  36
  37 /*
  38  * Magic Number
  39  * Meaning is unknown - this number is required for writing to ACPI for AMW0
  40  * (it's also used in acerhk when directly accessing the BIOS)
  41  */
  42 #define ACER_AMW0_WRITE 0x9610
  43
  44 /*
  45  * Bit masks for the AMW0 interface
  46  */
  47 #define ACER_AMW0_WIRELESS_MASK  0x35
  48 #define ACER_AMW0_BLUETOOTH_MASK 0x34
  49 #define ACER_AMW0_MAILLED_MASK   0x31
  50
  51 /*
  52  * Method IDs for WMID interface
  53  */
  54 #define ACER_WMID_GET_WIRELESS_METHODID         1
  55 #define ACER_WMID_GET_BLUETOOTH_METHODID        2
  56 #define ACER_WMID_GET_BRIGHTNESS_METHODID       3
  57 #define ACER_WMID_SET_WIRELESS_METHODID         4
  58 #define ACER_WMID_SET_BLUETOOTH_METHODID        5
  59 #define ACER_WMID_SET_BRIGHTNESS_METHODID       6
  60 #define ACER_WMID_GET_THREEG_METHODID           10
  61 #define ACER_WMID_SET_THREEG_METHODID           11
  62
  63 /*
  64  * Acer ACPI method GUIDs
  65  */
  66 #define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
  67 #define AMW0_GUID2              "431F16ED-0C2B-444C-B267-27DEB140CF9C"
  68 #define WMID_GUID1              "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
  69 #define WMID_GUID2              "95764E09-FB56-4E83-B31A-37761F60994A"
  70 #define WMID_GUID3              "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
  71
  72 /*
  73  * Acer ACPI event GUIDs
  74  */
  75 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
  76
  77 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
  78 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
  79 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
  80
  81 enum acer_wmi_event_ids {
  82         WMID_HOTKEY_EVENT = 0x1,
  83         WMID_ACCEL_EVENT = 0x5,
  84 };
  85
  86 static const struct key_entry acer_wmi_keymap[] __initconst = {
  87         {KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
  88         {KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
  89         {KE_KEY, 0x04, {KEY_WLAN} },     /* WiFi */
  90         {KE_KEY, 0x12, {KEY_BLUETOOTH} },       /* BT */
  91         {KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
  92         {KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
  93         {KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
  94         {KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
  95         {KE_KEY, 0x29, {KEY_PROG3} },    /* P_Key for TM8372 */
  96         {KE_IGNORE, 0x41, {KEY_MUTE} },
  97         {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
  98         {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
  99         {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
 100         {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
 101         {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
 102         {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
 103         {KE_IGNORE, 0x45, {KEY_STOP} },
 104         {KE_IGNORE, 0x50, {KEY_STOP} },
 105         {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
 106         {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
 107         {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
 108         {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
 109         {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 110         {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 111         {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
 112         {KE_IGNORE, 0x81, {KEY_SLEEP} },
 113         {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
 114         {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
 115         {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
 116         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 117         {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
 118         {KE_KEY, 0x86, {KEY_WLAN} },
 119         {KE_KEY, 0x87, {KEY_POWER} },
 120         {KE_END, 0}
 121 };
 122
 123 static struct input_dev *acer_wmi_input_dev;
 124 static struct input_dev *acer_wmi_accel_dev;
 125
 126 struct event_return_value {
 127         u8 function;
 128         u8 key_num;
 129         u16 device_state;
 130         u32 reserved;
 131 } __attribute__((packed));
 132
 133 /*
 134  * GUID3 Get Device Status device flags
 135  */
 136 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 137 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 138 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 139 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 140 #define ACER_WMID3_GDS_RFBTN            (1<<14) /* RF Button */
 141
 142 #define ACER_WMID3_GDS_TOUCHPAD         (1<<1)  /* Touchpad */
 143
 144 /* Hotkey Customized Setting and Acer Application Status.
 145  * Set Device Default Value and Report Acer Application Status.
 146  * When Acer Application starts, it will run this method to inform
 147  * BIOS/EC that Acer Application is on.
 148  * App Status
 149  *      Bit[0]: Launch Manager Status
 150  *      Bit[1]: ePM Status
 151  *      Bit[2]: Device Control Status
 152  *      Bit[3]: Acer Power Button Utility Status
 153  *      Bit[4]: RF Button Status
 154  *      Bit[5]: ODD PM Status
 155  *      Bit[6]: Device Default Value Control
 156  *      Bit[7]: Hall Sensor Application Status
 157  */
 158 struct func_input_params {
 159         u8 function_num;        /* Function Number */
 160         u16 commun_devices;     /* Communication type devices default status */
 161         u16 devices;            /* Other type devices default status */
 162         u8 app_status;          /* Acer Device Status. LM, ePM, RF Button... */
 163         u8 app_mask;            /* Bit mask to app_status */
 164         u8 reserved;
 165 } __attribute__((packed));
 166
 167 struct func_return_value {
 168         u8 error_code;          /* Error Code */
 169         u8 ec_return_value;     /* EC Return Value */
 170         u16 reserved;
 171 } __attribute__((packed));
 172
 173 struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 174         u8 function_num;        /* Function Number */
 175         u8 hotkey_number;       /* Hotkey Number */
 176         u16 devices;            /* Set Device */
 177         u8 volume_value;        /* Volume Value */
 178 } __attribute__((packed));
 179
 180 struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 181         u8 function_num;        /* Function Number */
 182         u8 hotkey_number;       /* Hotkey Number */
 183         u16 devices;            /* Get Device */
 184 } __attribute__((packed));
 185
 186 struct wmid3_gds_return_value { /* Get Device Status return value*/
 187         u8 error_code;          /* Error Code */
 188         u8 ec_return_value;     /* EC Return Value */
 189         u16 devices;            /* Current Device Status */
 190         u32 reserved;
 191 } __attribute__((packed));
 192
 193 struct hotkey_function_type_aa {
 194         u8 type;
 195         u8 length;
 196         u16 handle;
 197         u16 commun_func_bitmap;
 198         u16 application_func_bitmap;
 199         u16 media_func_bitmap;
 200         u16 display_func_bitmap;
 201         u16 others_func_bitmap;
 202         u8 commun_fn_key_number;
 203 } __attribute__((packed));
 204
 205 /*
 206  * Interface capability flags
 207  */
 208 #define ACER_CAP_MAILLED                (1<<0)
 209 #define ACER_CAP_WIRELESS               (1<<1)
 210 #define ACER_CAP_BLUETOOTH              (1<<2)
 211 #define ACER_CAP_BRIGHTNESS             (1<<3)
 212 #define ACER_CAP_THREEG                 (1<<4)
 213 #define ACER_CAP_ACCEL                  (1<<5)
 214 #define ACER_CAP_RFBTN                  (1<<6)
 215 #define ACER_CAP_ANY                    (0xFFFFFFFF)
 216
 217 /*
 218  * Interface type flags
 219  */
 220 enum interface_flags {
 221         ACER_AMW0,
 222         ACER_AMW0_V2,
 223         ACER_WMID,
 224         ACER_WMID_v2,
 225 };
 226
 227 #define ACER_DEFAULT_WIRELESS  0
 228 #define ACER_DEFAULT_BLUETOOTH 0
 229 #define ACER_DEFAULT_MAILLED   0
 230 #define ACER_DEFAULT_THREEG    0
 231
 232 static int max_brightness = 0xF;
 233
 234 static int mailled = -1;
 235 static int brightness = -1;
 236 static int threeg = -1;
 237 static int force_series;
 238 static bool ec_raw_mode;
 239 static bool has_type_aa;
 240 static u16 commun_func_bitmap;
 241 static u8 commun_fn_key_number;
 242
 243 module_param(mailled, int, 0444);
 244 module_param(brightness, int, 0444);
 245 module_param(threeg, int, 0444);
 246 module_param(force_series, int, 0444);
 247 module_param(ec_raw_mode, bool, 0444);
 248 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 249 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 250 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 251 MODULE_PARM_DESC(force_series, "Force a different laptop series");
 252 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 253
 254 struct acer_data {
 255         int mailled;
 256         int threeg;
 257         int brightness;
 258 };
 259
 260 struct acer_debug {
 261         struct dentry *root;
 262         u32 wmid_devices;
 263 };
 264
 265 static struct rfkill *wireless_rfkill;
 266 static struct rfkill *bluetooth_rfkill;
 267 static struct rfkill *threeg_rfkill;
 268 static bool rfkill_inited;
 269
 270 /* Each low-level interface must define at least some of the following */
 271 struct wmi_interface {
 272         /* The WMI device type */
 273         u32 type;
 274
 275         /* The capabilities this interface provides */
 276         u32 capability;
 277
 278         /* Private data for the current interface */
 279         struct acer_data data;
 280
 281         /* debugfs entries associated with this interface */
 282         struct acer_debug debug;
 283 };
 284
 285 /* The static interface pointer, points to the currently detected interface */
 286 static struct wmi_interface *interface;
 287
 288 /*
 289  * Embedded Controller quirks
 290  * Some laptops require us to directly access the EC to either enable or query
 291  * features that are not available through WMI.
 292  */
 293
 294 struct quirk_entry {
 295         u8 wireless;
 296         u8 mailled;
 297         s8 brightness;
 298         u8 bluetooth;
 299 };
 300
 301 static struct quirk_entry *quirks;
 302
 303 static void __init set_quirks(void)
 304 {
 305         if (!interface)
 306                 return;
 307
 308         if (quirks->mailled)
 309                 interface->capability |= ACER_CAP_MAILLED;
 310
 311         if (quirks->brightness)
 312                 interface->capability |= ACER_CAP_BRIGHTNESS;
 313 }
 314
 315 static int __init dmi_matched(const struct dmi_system_id *dmi)
 316 {
 317         quirks = dmi->driver_data;
 318         return 1;
 319 }
 320
 321 static struct quirk_entry quirk_unknown = {
 322 };
 323
 324 static struct quirk_entry quirk_acer_aspire_1520 = {
 325         .brightness = -1,
 326 };
 327
 328 static struct quirk_entry quirk_acer_travelmate_2490 = {
 329         .mailled = 1,
 330 };
 331
 332 /* This AMW0 laptop has no bluetooth */
 333 static struct quirk_entry quirk_medion_md_98300 = {
 334         .wireless = 1,
 335 };
 336
 337 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 338         .wireless = 2,
 339 };
 340
 341 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 342         .wireless = 3,
 343 };
 344
 345 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
 346 static const struct dmi_system_id acer_blacklist[] __initconst = {
 347         {
 348                 .ident = "Acer Aspire One (SSD)",
 349                 .matches = {
 350                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 351                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 352                 },
 353         },
 354         {
 355                 .ident = "Acer Aspire One (HDD)",
 356                 .matches = {
 357                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 358                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 359                 },
 360         },
 361         {}
 362 };
 363
 364 static const struct dmi_system_id amw0_whitelist[] __initconst = {
 365         {
 366                 .ident = "Acer",
 367                 .matches = {
 368                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 369                 },
 370         },
 371         {
 372                 .ident = "Gateway",
 373                 .matches = {
 374                         DMI_MATCH(DMI_SYS_VENDOR, "Gateway"),
 375                 },
 376         },
 377         {
 378                 .ident = "Packard Bell",
 379                 .matches = {
 380                         DMI_MATCH(DMI_SYS_VENDOR, "Packard Bell"),
 381                 },
 382         },
 383         {}
 384 };
 385
 386 /*
 387  * This quirk table is only for Acer/Gateway/Packard Bell family
 388  * that those machines are supported by acer-wmi driver.
 389  */
 390 static const struct dmi_system_id acer_quirks[] __initconst = {
 391         {
 392                 .callback = dmi_matched,
 393                 .ident = "Acer Aspire 1360",
 394                 .matches = {
 395                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 396                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 397                 },
 398                 .driver_data = &quirk_acer_aspire_1520,
 399         },
 400         {
 401                 .callback = dmi_matched,
 402                 .ident = "Acer Aspire 1520",
 403                 .matches = {
 404                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 405                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 406                 },
 407                 .driver_data = &quirk_acer_aspire_1520,
 408         },
 409         {
 410                 .callback = dmi_matched,
 411                 .ident = "Acer Aspire 3100",
 412                 .matches = {
 413                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 414                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 415                 },
 416                 .driver_data = &quirk_acer_travelmate_2490,
 417         },
 418         {
 419                 .callback = dmi_matched,
 420                 .ident = "Acer Aspire 3610",
 421                 .matches = {
 422                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 423                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 424                 },
 425                 .driver_data = &quirk_acer_travelmate_2490,
 426         },
 427         {
 428                 .callback = dmi_matched,
 429                 .ident = "Acer Aspire 5100",
 430                 .matches = {
 431                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 432                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 433                 },
 434                 .driver_data = &quirk_acer_travelmate_2490,
 435         },
 436         {
 437                 .callback = dmi_matched,
 438                 .ident = "Acer Aspire 5610",
 439                 .matches = {
 440                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 441                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 442                 },
 443                 .driver_data = &quirk_acer_travelmate_2490,
 444         },
 445         {
 446                 .callback = dmi_matched,
 447                 .ident = "Acer Aspire 5630",
 448                 .matches = {
 449                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 450                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 451                 },
 452                 .driver_data = &quirk_acer_travelmate_2490,
 453         },
 454         {
 455                 .callback = dmi_matched,
 456                 .ident = "Acer Aspire 5650",
 457                 .matches = {
 458                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 459                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 460                 },
 461                 .driver_data = &quirk_acer_travelmate_2490,
 462         },
 463         {
 464                 .callback = dmi_matched,
 465                 .ident = "Acer Aspire 5680",
 466                 .matches = {
 467                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 468                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 469                 },
 470                 .driver_data = &quirk_acer_travelmate_2490,
 471         },
 472         {
 473                 .callback = dmi_matched,
 474                 .ident = "Acer Aspire 9110",
 475                 .matches = {
 476                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 477                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 478                 },
 479                 .driver_data = &quirk_acer_travelmate_2490,
 480         },
 481         {
 482                 .callback = dmi_matched,
 483                 .ident = "Acer TravelMate 2490",
 484                 .matches = {
 485                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 486                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 487                 },
 488                 .driver_data = &quirk_acer_travelmate_2490,
 489         },
 490         {
 491                 .callback = dmi_matched,
 492                 .ident = "Acer TravelMate 4200",
 493                 .matches = {
 494                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 495                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 496                 },
 497                 .driver_data = &quirk_acer_travelmate_2490,
 498         },
 499         {}
 500 };
 501
 502 /*
 503  * This quirk list is for those non-acer machines that have AMW0_GUID1
 504  * but supported by acer-wmi in past days. Keeping this quirk list here
 505  * is only for backward compatible. Please do not add new machine to
 506  * here anymore. Those non-acer machines should be supported by
 507  * appropriate wmi drivers.
 508  */
 509 static const struct dmi_system_id non_acer_quirks[] __initconst = {
 510         {
 511                 .callback = dmi_matched,
 512                 .ident = "Fujitsu Siemens Amilo Li 1718",
 513                 .matches = {
 514                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 515                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 516                 },
 517                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 518         },
 519         {
 520                 .callback = dmi_matched,
 521                 .ident = "Medion MD 98300",
 522                 .matches = {
 523                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 524                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 525                 },
 526                 .driver_data = &quirk_medion_md_98300,
 527         },
 528         {
 529                 .callback = dmi_matched,
 530                 .ident = "Lenovo Ideapad S205",
 531                 .matches = {
 532                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 533                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 534                 },
 535                 .driver_data = &quirk_lenovo_ideapad_s205,
 536         },
 537         {
 538                 .callback = dmi_matched,
 539                 .ident = "Lenovo Ideapad S205 (Brazos)",
 540                 .matches = {
 541                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 542                         DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 543                 },
 544                 .driver_data = &quirk_lenovo_ideapad_s205,
 545         },
 546         {
 547                 .callback = dmi_matched,
 548                 .ident = "Lenovo 3000 N200",
 549                 .matches = {
 550                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 551                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 552                 },
 553                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 554         },
 555         {
 556                 .callback = dmi_matched,
 557                 .ident = "Lenovo Ideapad S205-10382JG",
 558                 .matches = {
 559                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 560                         DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
 561                 },
 562                 .driver_data = &quirk_lenovo_ideapad_s205,
 563         },
 564         {
 565                 .callback = dmi_matched,
 566                 .ident = "Lenovo Ideapad S205-1038DPG",
 567                 .matches = {
 568                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 569                         DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
 570                 },
 571                 .driver_data = &quirk_lenovo_ideapad_s205,
 572         },
 573         {}
 574 };
 575
 576 static int __init
 577 video_set_backlight_video_vendor(const struct dmi_system_id *d)
 578 {
 579         interface->capability &= ~ACER_CAP_BRIGHTNESS;
 580         pr_info("Brightness must be controlled by generic video driver\n");
 581         return 0;
 582 }
 583
 584 static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
 585         {
 586                 .callback = video_set_backlight_video_vendor,
 587                 .ident = "Acer TravelMate 4750",
 588                 .matches = {
 589                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 590                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 591                 },
 592         },
 593         {
 594                 .callback = video_set_backlight_video_vendor,
 595                 .ident = "Acer Extensa 5235",
 596                 .matches = {
 597                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 598                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 599                 },
 600         },
 601         {
 602                 .callback = video_set_backlight_video_vendor,
 603                 .ident = "Acer TravelMate 5760",
 604                 .matches = {
 605                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 606                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 607                 },
 608         },
 609         {
 610                 .callback = video_set_backlight_video_vendor,
 611                 .ident = "Acer Aspire 5750",
 612                 .matches = {
 613                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 614                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 615                 },
 616         },
 617         {
 618                 .callback = video_set_backlight_video_vendor,
 619                 .ident = "Acer Aspire 5741",
 620                 .matches = {
 621                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 622                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
 623                 },
 624         },
 625         {
 626                 /*
 627                  * Note no video_set_backlight_video_vendor, we must use the
 628                  * acer interface, as there is no native backlight interface.
 629                  */
 630                 .ident = "Acer KAV80",
 631                 .matches = {
 632                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 633                         DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
 634                 },
 635         },
 636         {}
 637 };
 638
 639 /* Find which quirks are needed for a particular vendor/ model pair */
 640 static void __init find_quirks(void)
 641 {
 642         if (!force_series) {
 643                 dmi_check_system(acer_quirks);
 644                 dmi_check_system(non_acer_quirks);
 645         } else if (force_series == 2490) {
 646                 quirks = &quirk_acer_travelmate_2490;
 647         }
 648
 649         if (quirks == NULL)
 650                 quirks = &quirk_unknown;
 651
 652         set_quirks();
 653 }
 654
 655 /*
 656  * General interface convenience methods
 657  */
 658
 659 static bool has_cap(u32 cap)
 660 {
 661         return interface->capability & cap;
 662 }
 663
 664 /*
 665  * AMW0 (V1) interface
 666  */
 667 struct wmab_args {
 668         u32 eax;
 669         u32 ebx;
 670         u32 ecx;
 671         u32 edx;
 672 };
 673
 674 struct wmab_ret {
 675         u32 eax;
 676         u32 ebx;
 677         u32 ecx;
 678         u32 edx;
 679         u32 eex;
 680 };
 681
 682 static acpi_status wmab_execute(struct wmab_args *regbuf,
 683 struct acpi_buffer *result)
 684 {
 685         struct acpi_buffer input;
 686         acpi_status status;
 687         input.length = sizeof(struct wmab_args);
 688         input.pointer = (u8 *)regbuf;
 689
 690         status = wmi_evaluate_method(AMW0_GUID1, 0, 1, &input, result);
 691
 692         return status;
 693 }
 694
 695 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 696 {
 697         int err;
 698         u8 result;
 699
 700         switch (cap) {
 701         case ACER_CAP_MAILLED:
 702                 switch (quirks->mailled) {
 703                 default:
 704                         err = ec_read(0xA, &result);
 705                         if (err)
 706                                 return AE_ERROR;
 707                         *value = (result >> 7) & 0x1;
 708                         return AE_OK;
 709                 }
 710                 break;
 711         case ACER_CAP_WIRELESS:
 712                 switch (quirks->wireless) {
 713                 case 1:
 714                         err = ec_read(0x7B, &result);
 715                         if (err)
 716                                 return AE_ERROR;
 717                         *value = result & 0x1;
 718                         return AE_OK;
 719                 case 2:
 720                         err = ec_read(0x71, &result);
 721                         if (err)
 722                                 return AE_ERROR;
 723                         *value = result & 0x1;
 724                         return AE_OK;
 725                 case 3:
 726                         err = ec_read(0x78, &result);
 727                         if (err)
 728                                 return AE_ERROR;
 729                         *value = result & 0x1;
 730                         return AE_OK;
 731                 default:
 732                         err = ec_read(0xA, &result);
 733                         if (err)
 734                                 return AE_ERROR;
 735                         *value = (result >> 2) & 0x1;
 736                         return AE_OK;
 737                 }
 738                 break;
 739         case ACER_CAP_BLUETOOTH:
 740                 switch (quirks->bluetooth) {
 741                 default:
 742                         err = ec_read(0xA, &result);
 743                         if (err)
 744                                 return AE_ERROR;
 745                         *value = (result >> 4) & 0x1;
 746                         return AE_OK;
 747                 }
 748                 break;
 749         case ACER_CAP_BRIGHTNESS:
 750                 switch (quirks->brightness) {
 751                 default:
 752                         err = ec_read(0x83, &result);
 753                         if (err)
 754                                 return AE_ERROR;
 755                         *value = result;
 756                         return AE_OK;
 757                 }
 758                 break;
 759         default:
 760                 return AE_ERROR;
 761         }
 762         return AE_OK;
 763 }
 764
 765 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 766 {
 767         struct wmab_args args;
 768
 769         args.eax = ACER_AMW0_WRITE;
 770         args.ebx = value ? (1<<8) : 0;
 771         args.ecx = args.edx = 0;
 772
 773         switch (cap) {
 774         case ACER_CAP_MAILLED:
 775                 if (value > 1)
 776                         return AE_BAD_PARAMETER;
 777                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 778                 break;
 779         case ACER_CAP_WIRELESS:
 780                 if (value > 1)
 781                         return AE_BAD_PARAMETER;
 782                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 783                 break;
 784         case ACER_CAP_BLUETOOTH:
 785                 if (value > 1)
 786                         return AE_BAD_PARAMETER;
 787                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 788                 break;
 789         case ACER_CAP_BRIGHTNESS:
 790                 if (value > max_brightness)
 791                         return AE_BAD_PARAMETER;
 792                 switch (quirks->brightness) {
 793                 default:
 794                         return ec_write(0x83, value);
 795                         break;
 796                 }
 797         default:
 798                 return AE_ERROR;
 799         }
 800
 801         /* Actually do the set */
 802         return wmab_execute(&args, NULL);
 803 }
 804
 805 static acpi_status __init AMW0_find_mailled(void)
 806 {
 807         struct wmab_args args;
 808         struct wmab_ret ret;
 809         acpi_status status = AE_OK;
 810         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 811         union acpi_object *obj;
 812
 813         args.eax = 0x86;
 814         args.ebx = args.ecx = args.edx = 0;
 815
 816         status = wmab_execute(&args, &out);
 817         if (ACPI_FAILURE(status))
 818                 return status;
 819
 820         obj = (union acpi_object *) out.pointer;
 821         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 822         obj->buffer.length == sizeof(struct wmab_ret)) {
 823                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 824         } else {
 825                 kfree(out.pointer);
 826                 return AE_ERROR;
 827         }
 828
 829         if (ret.eex & 0x1)
 830                 interface->capability |= ACER_CAP_MAILLED;
 831
 832         kfree(out.pointer);
 833
 834         return AE_OK;
 835 }
 836
 837 static const struct acpi_device_id norfkill_ids[] __initconst = {
 838         { "VPC2004", 0},
 839         { "IBM0068", 0},
 840         { "LEN0068", 0},
 841         { "SNY5001", 0},        /* sony-laptop in charge */
 842         { "HPQ6601", 0},
 843         { "", 0},
 844 };
 845
 846 static int __init AMW0_set_cap_acpi_check_device(void)
 847 {
 848         const struct acpi_device_id *id;
 849
 850         for (id = norfkill_ids; id->id[0]; id++)
 851                 if (acpi_dev_found(id->id))
 852                         return true;
 853
 854         return false;
 855 }
 856
 857 static acpi_status __init AMW0_set_capabilities(void)
 858 {
 859         struct wmab_args args;
 860         struct wmab_ret ret;
 861         acpi_status status;
 862         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 863         union acpi_object *obj;
 864
 865         /*
 866          * On laptops with this strange GUID (non Acer), normal probing doesn't
 867          * work.
 868          */
 869         if (wmi_has_guid(AMW0_GUID2)) {
 870                 if ((quirks != &quirk_unknown) ||
 871                     !AMW0_set_cap_acpi_check_device())
 872                         interface->capability |= ACER_CAP_WIRELESS;
 873                 return AE_OK;
 874         }
 875
 876         args.eax = ACER_AMW0_WRITE;
 877         args.ecx = args.edx = 0;
 878
 879         args.ebx = 0xa2 << 8;
 880         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 881
 882         status = wmab_execute(&args, &out);
 883         if (ACPI_FAILURE(status))
 884                 return status;
 885
 886         obj = out.pointer;
 887         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 888         obj->buffer.length == sizeof(struct wmab_ret)) {
 889                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 890         } else {
 891                 status = AE_ERROR;
 892                 goto out;
 893         }
 894
 895         if (ret.eax & 0x1)
 896                 interface->capability |= ACER_CAP_WIRELESS;
 897
 898         args.ebx = 2 << 8;
 899         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 900
 901         /*
 902          * It's ok to use existing buffer for next wmab_execute call.
 903          * But we need to kfree(out.pointer) if next wmab_execute fail.
 904          */
 905         status = wmab_execute(&args, &out);
 906         if (ACPI_FAILURE(status))
 907                 goto out;
 908
 909         obj = (union acpi_object *) out.pointer;
 910         if (obj && obj->type == ACPI_TYPE_BUFFER
 911         && obj->buffer.length == sizeof(struct wmab_ret)) {
 912                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 913         } else {
 914                 status = AE_ERROR;
 915                 goto out;
 916         }
 917
 918         if (ret.eax & 0x1)
 919                 interface->capability |= ACER_CAP_BLUETOOTH;
 920
 921         /*
 922          * This appears to be safe to enable, since all Wistron based laptops
 923          * appear to use the same EC register for brightness, even if they
 924          * differ for wireless, etc
 925          */
 926         if (quirks->brightness >= 0)
 927                 interface->capability |= ACER_CAP_BRIGHTNESS;
 928
 929         status = AE_OK;
 930 out:
 931         kfree(out.pointer);
 932         return status;
 933 }
 934
 935 static struct wmi_interface AMW0_interface = {
 936         .type = ACER_AMW0,
 937 };
 938
 939 static struct wmi_interface AMW0_V2_interface = {
 940         .type = ACER_AMW0_V2,
 941 };
 942
 943 /*
 944  * New interface (The WMID interface)
 945  */
 946 static acpi_status
 947 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 948 {
 949         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 950         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 951         union acpi_object *obj;
 952         u32 tmp = 0;
 953         acpi_status status;
 954
 955         status = wmi_evaluate_method(WMID_GUID1, 0, method_id, &input, &result);
 956
 957         if (ACPI_FAILURE(status))
 958                 return status;
 959
 960         obj = (union acpi_object *) result.pointer;
 961         if (obj) {
 962                 if (obj->type == ACPI_TYPE_BUFFER &&
 963                         (obj->buffer.length == sizeof(u32) ||
 964                         obj->buffer.length == sizeof(u64))) {
 965                         tmp = *((u32 *) obj->buffer.pointer);
 966                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 967                         tmp = (u32) obj->integer.value;
 968                 }
 969         }
 970
 971         if (out)
 972                 *out = tmp;
 973
 974         kfree(result.pointer);
 975
 976         return status;
 977 }
 978
 979 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 980 {
 981         acpi_status status;
 982         u8 tmp;
 983         u32 result, method_id = 0;
 984
 985         switch (cap) {
 986         case ACER_CAP_WIRELESS:
 987                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 988                 break;
 989         case ACER_CAP_BLUETOOTH:
 990                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 991                 break;
 992         case ACER_CAP_BRIGHTNESS:
 993                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 994                 break;
 995         case ACER_CAP_THREEG:
 996                 method_id = ACER_WMID_GET_THREEG_METHODID;
 997                 break;
 998         case ACER_CAP_MAILLED:
 999                 if (quirks->mailled == 1) {
1000                         ec_read(0x9f, &tmp);
1001                         *value = tmp & 0x1;
1002                         return 0;
1003                 }
1004                 /* fall through */
1005         default:
1006                 return AE_ERROR;
1007         }
1008         status = WMI_execute_u32(method_id, 0, &result);
1009
1010         if (ACPI_SUCCESS(status))
1011                 *value = (u8)result;
1012
1013         return status;
1014 }
1015
1016 static acpi_status WMID_set_u32(u32 value, u32 cap)
1017 {
1018         u32 method_id = 0;
1019         char param;
1020
1021         switch (cap) {
1022         case ACER_CAP_BRIGHTNESS:
1023                 if (value > max_brightness)
1024                         return AE_BAD_PARAMETER;
1025                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
1026                 break;
1027         case ACER_CAP_WIRELESS:
1028                 if (value > 1)
1029                         return AE_BAD_PARAMETER;
1030                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
1031                 break;
1032         case ACER_CAP_BLUETOOTH:
1033                 if (value > 1)
1034                         return AE_BAD_PARAMETER;
1035                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
1036                 break;
1037         case ACER_CAP_THREEG:
1038                 if (value > 1)
1039                         return AE_BAD_PARAMETER;
1040                 method_id = ACER_WMID_SET_THREEG_METHODID;
1041                 break;
1042         case ACER_CAP_MAILLED:
1043                 if (value > 1)
1044                         return AE_BAD_PARAMETER;
1045                 if (quirks->mailled == 1) {
1046                         param = value ? 0x92 : 0x93;
1047                         i8042_lock_chip();
1048                         i8042_command(&param, 0x1059);
1049                         i8042_unlock_chip();
1050                         return 0;
1051                 }
1052                 break;
1053         default:
1054                 return AE_ERROR;
1055         }
1056         return WMI_execute_u32(method_id, (u32)value, NULL);
1057 }
1058
1059 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1060 {
1061         struct wmid3_gds_return_value return_value;
1062         acpi_status status;
1063         union acpi_object *obj;
1064         struct wmid3_gds_get_input_param params = {
1065                 .function_num = 0x1,
1066                 .hotkey_number = commun_fn_key_number,
1067                 .devices = device,
1068         };
1069         struct acpi_buffer input = {
1070                 sizeof(struct wmid3_gds_get_input_param),
1071                 &params
1072         };
1073         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1074
1075         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1076         if (ACPI_FAILURE(status))
1077                 return status;
1078
1079         obj = output.pointer;
1080
1081         if (!obj)
1082                 return AE_ERROR;
1083         else if (obj->type != ACPI_TYPE_BUFFER) {
1084                 kfree(obj);
1085                 return AE_ERROR;
1086         }
1087         if (obj->buffer.length != 8) {
1088                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1089                 kfree(obj);
1090                 return AE_ERROR;
1091         }
1092
1093         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1094         kfree(obj);
1095
1096         if (return_value.error_code || return_value.ec_return_value)
1097                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1098                         device,
1099                         return_value.error_code,
1100                         return_value.ec_return_value);
1101         else
1102                 *value = !!(return_value.devices & device);
1103
1104         return status;
1105 }
1106
1107 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1108 {
1109         u16 device;
1110
1111         switch (cap) {
1112         case ACER_CAP_WIRELESS:
1113                 device = ACER_WMID3_GDS_WIRELESS;
1114                 break;
1115         case ACER_CAP_BLUETOOTH:
1116                 device = ACER_WMID3_GDS_BLUETOOTH;
1117                 break;
1118         case ACER_CAP_THREEG:
1119                 device = ACER_WMID3_GDS_THREEG;
1120                 break;
1121         default:
1122                 return AE_ERROR;
1123         }
1124         return wmid3_get_device_status(value, device);
1125 }
1126
1127 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1128 {
1129         struct wmid3_gds_return_value return_value;
1130         acpi_status status;
1131         union acpi_object *obj;
1132         u16 devices;
1133         struct wmid3_gds_get_input_param get_params = {
1134                 .function_num = 0x1,
1135                 .hotkey_number = commun_fn_key_number,
1136                 .devices = commun_func_bitmap,
1137         };
1138         struct acpi_buffer get_input = {
1139                 sizeof(struct wmid3_gds_get_input_param),
1140                 &get_params
1141         };
1142         struct wmid3_gds_set_input_param set_params = {
1143                 .function_num = 0x2,
1144                 .hotkey_number = commun_fn_key_number,
1145                 .devices = commun_func_bitmap,
1146         };
1147         struct acpi_buffer set_input = {
1148                 sizeof(struct wmid3_gds_set_input_param),
1149                 &set_params
1150         };
1151         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1152         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1153
1154         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1155         if (ACPI_FAILURE(status))
1156                 return status;
1157
1158         obj = output.pointer;
1159
1160         if (!obj)
1161                 return AE_ERROR;
1162         else if (obj->type != ACPI_TYPE_BUFFER) {
1163                 kfree(obj);
1164                 return AE_ERROR;
1165         }
1166         if (obj->buffer.length != 8) {
1167                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1168                 kfree(obj);
1169                 return AE_ERROR;
1170         }
1171
1172         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1173         kfree(obj);
1174
1175         if (return_value.error_code || return_value.ec_return_value) {
1176                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1177                         return_value.error_code,
1178                         return_value.ec_return_value);
1179                 return status;
1180         }
1181
1182         devices = return_value.devices;
1183         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1184
1185         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1186         if (ACPI_FAILURE(status))
1187                 return status;
1188
1189         obj = output2.pointer;
1190
1191         if (!obj)
1192                 return AE_ERROR;
1193         else if (obj->type != ACPI_TYPE_BUFFER) {
1194                 kfree(obj);
1195                 return AE_ERROR;
1196         }
1197         if (obj->buffer.length != 4) {
1198                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1199                 kfree(obj);
1200                 return AE_ERROR;
1201         }
1202
1203         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1204         kfree(obj);
1205
1206         if (return_value.error_code || return_value.ec_return_value)
1207                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1208                         return_value.error_code,
1209                         return_value.ec_return_value);
1210
1211         return status;
1212 }
1213
1214 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1215 {
1216         u16 device;
1217
1218         switch (cap) {
1219         case ACER_CAP_WIRELESS:
1220                 device = ACER_WMID3_GDS_WIRELESS;
1221                 break;
1222         case ACER_CAP_BLUETOOTH:
1223                 device = ACER_WMID3_GDS_BLUETOOTH;
1224                 break;
1225         case ACER_CAP_THREEG:
1226                 device = ACER_WMID3_GDS_THREEG;
1227                 break;
1228         default:
1229                 return AE_ERROR;
1230         }
1231         return wmid3_set_device_status(value, device);
1232 }
1233
1234 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1235 {
1236         struct hotkey_function_type_aa *type_aa;
1237
1238         /* We are looking for OEM-specific Type AAh */
1239         if (header->type != 0xAA)
1240                 return;
1241
1242         has_type_aa = true;
1243         type_aa = (struct hotkey_function_type_aa *) header;
1244
1245         pr_info("Function bitmap for Communication Button: 0x%x\n",
1246                 type_aa->commun_func_bitmap);
1247         commun_func_bitmap = type_aa->commun_func_bitmap;
1248
1249         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1250                 interface->capability |= ACER_CAP_WIRELESS;
1251         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1252                 interface->capability |= ACER_CAP_THREEG;
1253         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1254                 interface->capability |= ACER_CAP_BLUETOOTH;
1255         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_RFBTN) {
1256                 interface->capability |= ACER_CAP_RFBTN;
1257                 commun_func_bitmap &= ~ACER_WMID3_GDS_RFBTN;
1258         }
1259
1260         commun_fn_key_number = type_aa->commun_fn_key_number;
1261 }
1262
1263 static acpi_status __init WMID_set_capabilities(void)
1264 {
1265         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1266         union acpi_object *obj;
1267         acpi_status status;
1268         u32 devices;
1269
1270         status = wmi_query_block(WMID_GUID2, 0, &out);
1271         if (ACPI_FAILURE(status))
1272                 return status;
1273
1274         obj = (union acpi_object *) out.pointer;
1275         if (obj) {
1276                 if (obj->type == ACPI_TYPE_BUFFER &&
1277                         (obj->buffer.length == sizeof(u32) ||
1278                         obj->buffer.length == sizeof(u64))) {
1279                         devices = *((u32 *) obj->buffer.pointer);
1280                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1281                         devices = (u32) obj->integer.value;
1282                 } else {
1283                         kfree(out.pointer);
1284                         return AE_ERROR;
1285                 }
1286         } else {
1287                 kfree(out.pointer);
1288                 return AE_ERROR;
1289         }
1290
1291         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1292         if (devices & 0x07)
1293                 interface->capability |= ACER_CAP_WIRELESS;
1294         if (devices & 0x40)
1295                 interface->capability |= ACER_CAP_THREEG;
1296         if (devices & 0x10)
1297                 interface->capability |= ACER_CAP_BLUETOOTH;
1298
1299         if (!(devices & 0x20))
1300                 max_brightness = 0x9;
1301
1302         kfree(out.pointer);
1303         return status;
1304 }
1305
1306 static struct wmi_interface wmid_interface = {
1307         .type = ACER_WMID,
1308 };
1309
1310 static struct wmi_interface wmid_v2_interface = {
1311         .type = ACER_WMID_v2,
1312 };
1313
1314 /*
1315  * Generic Device (interface-independent)
1316  */
1317
1318 static acpi_status get_u32(u32 *value, u32 cap)
1319 {
1320         acpi_status status = AE_ERROR;
1321
1322         switch (interface->type) {
1323         case ACER_AMW0:
1324                 status = AMW0_get_u32(value, cap);
1325                 break;
1326         case ACER_AMW0_V2:
1327                 if (cap == ACER_CAP_MAILLED) {
1328                         status = AMW0_get_u32(value, cap);
1329                         break;
1330                 }
1331                 /* fall through */
1332         case ACER_WMID:
1333                 status = WMID_get_u32(value, cap);
1334                 break;
1335         case ACER_WMID_v2:
1336                 if (cap & (ACER_CAP_WIRELESS |
1337                            ACER_CAP_BLUETOOTH |
1338                            ACER_CAP_THREEG))
1339                         status = wmid_v2_get_u32(value, cap);
1340                 else if (wmi_has_guid(WMID_GUID2))
1341                         status = WMID_get_u32(value, cap);
1342                 break;
1343         }
1344
1345         return status;
1346 }
1347
1348 static acpi_status set_u32(u32 value, u32 cap)
1349 {
1350         acpi_status status;
1351
1352         if (interface->capability & cap) {
1353                 switch (interface->type) {
1354                 case ACER_AMW0:
1355                         return AMW0_set_u32(value, cap);
1356                 case ACER_AMW0_V2:
1357                         if (cap == ACER_CAP_MAILLED)
1358                                 return AMW0_set_u32(value, cap);
1359
1360                         /*
1361                          * On some models, some WMID methods don't toggle
1362                          * properly. For those cases, we want to run the AMW0
1363                          * method afterwards to be certain we've really toggled
1364                          * the device state.
1365                          */
1366                         if (cap == ACER_CAP_WIRELESS ||
1367                                 cap == ACER_CAP_BLUETOOTH) {
1368                                 status = WMID_set_u32(value, cap);
1369                                 if (ACPI_FAILURE(status))
1370                                         return status;
1371
1372                                 return AMW0_set_u32(value, cap);
1373                         }
1374                         /* fall through */
1375                 case ACER_WMID:
1376                         return WMID_set_u32(value, cap);
1377                 case ACER_WMID_v2:
1378                         if (cap & (ACER_CAP_WIRELESS |
1379                                    ACER_CAP_BLUETOOTH |
1380                                    ACER_CAP_THREEG))
1381                                 return wmid_v2_set_u32(value, cap);
1382                         else if (wmi_has_guid(WMID_GUID2))
1383                                 return WMID_set_u32(value, cap);
1384                         /* fall through */
1385                 default:
1386                         return AE_BAD_PARAMETER;
1387                 }
1388         }
1389         return AE_BAD_PARAMETER;
1390 }
1391
1392 static void __init acer_commandline_init(void)
1393 {
1394         /*
1395          * These will all fail silently if the value given is invalid, or the
1396          * capability isn't available on the given interface
1397          */
1398         if (mailled >= 0)
1399                 set_u32(mailled, ACER_CAP_MAILLED);
1400         if (!has_type_aa && threeg >= 0)
1401                 set_u32(threeg, ACER_CAP_THREEG);
1402         if (brightness >= 0)
1403                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1404 }
1405
1406 /*
1407  * LED device (Mail LED only, no other LEDs known yet)
1408  */
1409 static void mail_led_set(struct led_classdev *led_cdev,
1410 enum led_brightness value)
1411 {
1412         set_u32(value, ACER_CAP_MAILLED);
1413 }
1414
1415 static struct led_classdev mail_led = {
1416         .name = "acer-wmi::mail",
1417         .brightness_set = mail_led_set,
1418 };
1419
1420 static int acer_led_init(struct device *dev)
1421 {
1422         return led_classdev_register(dev, &mail_led);
1423 }
1424
1425 static void acer_led_exit(void)
1426 {
1427         set_u32(LED_OFF, ACER_CAP_MAILLED);
1428         led_classdev_unregister(&mail_led);
1429 }
1430
1431 /*
1432  * Backlight device
1433  */
1434 static struct backlight_device *acer_backlight_device;
1435
1436 static int read_brightness(struct backlight_device *bd)
1437 {
1438         u32 value;
1439         get_u32(&value, ACER_CAP_BRIGHTNESS);
1440         return value;
1441 }
1442
1443 static int update_bl_status(struct backlight_device *bd)
1444 {
1445         int intensity = bd->props.brightness;
1446
1447         if (bd->props.power != FB_BLANK_UNBLANK)
1448                 intensity = 0;
1449         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1450                 intensity = 0;
1451
1452         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1453
1454         return 0;
1455 }
1456
1457 static const struct backlight_ops acer_bl_ops = {
1458         .get_brightness = read_brightness,
1459         .update_status = update_bl_status,
1460 };
1461
1462 static int acer_backlight_init(struct device *dev)
1463 {
1464         struct backlight_properties props;
1465         struct backlight_device *bd;
1466
1467         memset(&props, 0, sizeof(struct backlight_properties));
1468         props.type = BACKLIGHT_PLATFORM;
1469         props.max_brightness = max_brightness;
1470         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1471                                        &props);
1472         if (IS_ERR(bd)) {
1473                 pr_err("Could not register Acer backlight device\n");
1474                 acer_backlight_device = NULL;
1475                 return PTR_ERR(bd);
1476         }
1477
1478         acer_backlight_device = bd;
1479
1480         bd->props.power = FB_BLANK_UNBLANK;
1481         bd->props.brightness = read_brightness(bd);
1482         backlight_update_status(bd);
1483         return 0;
1484 }
1485
1486 static void acer_backlight_exit(void)
1487 {
1488         backlight_device_unregister(acer_backlight_device);
1489 }
1490
1491 /*
1492  * Accelerometer device
1493  */
1494 static acpi_handle gsensor_handle;
1495
1496 static int acer_gsensor_init(void)
1497 {
1498         acpi_status status;
1499         struct acpi_buffer output;
1500         union acpi_object out_obj;
1501
1502         output.length = sizeof(out_obj);
1503         output.pointer = &out_obj;
1504         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1505         if (ACPI_FAILURE(status))
1506                 return -1;
1507
1508         return 0;
1509 }
1510
1511 static int acer_gsensor_open(struct input_dev *input)
1512 {
1513         return acer_gsensor_init();
1514 }
1515
1516 static int acer_gsensor_event(void)
1517 {
1518         acpi_status status;
1519         struct acpi_buffer output;
1520         union acpi_object out_obj[5];
1521
1522         if (!has_cap(ACER_CAP_ACCEL))
1523                 return -1;
1524
1525         output.length = sizeof(out_obj);
1526         output.pointer = out_obj;
1527
1528         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1529         if (ACPI_FAILURE(status))
1530                 return -1;
1531
1532         if (out_obj->package.count != 4)
1533                 return -1;
1534
1535         input_report_abs(acer_wmi_accel_dev, ABS_X,
1536                 (s16)out_obj->package.elements[0].integer.value);
1537         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1538                 (s16)out_obj->package.elements[1].integer.value);
1539         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1540                 (s16)out_obj->package.elements[2].integer.value);
1541         input_sync(acer_wmi_accel_dev);
1542         return 0;
1543 }
1544
1545 /*
1546  * Rfkill devices
1547  */
1548 static void acer_rfkill_update(struct work_struct *ignored);
1549 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1550 static void acer_rfkill_update(struct work_struct *ignored)
1551 {
1552         u32 state;
1553         acpi_status status;
1554
1555         if (has_cap(ACER_CAP_WIRELESS)) {
1556                 status = get_u32(&state, ACER_CAP_WIRELESS);
1557                 if (ACPI_SUCCESS(status)) {
1558                         if (quirks->wireless == 3)
1559                                 rfkill_set_hw_state(wireless_rfkill, !state);
1560                         else
1561                                 rfkill_set_sw_state(wireless_rfkill, !state);
1562                 }
1563         }
1564
1565         if (has_cap(ACER_CAP_BLUETOOTH)) {
1566                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1567                 if (ACPI_SUCCESS(status))
1568                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1569         }
1570
1571         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1572                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1573                 if (ACPI_SUCCESS(status))
1574                         rfkill_set_sw_state(threeg_rfkill, !state);
1575         }
1576
1577         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1578 }
1579
1580 static int acer_rfkill_set(void *data, bool blocked)
1581 {
1582         acpi_status status;
1583         u32 cap = (unsigned long)data;
1584
1585         if (rfkill_inited) {
1586                 status = set_u32(!blocked, cap);
1587                 if (ACPI_FAILURE(status))
1588                         return -ENODEV;
1589         }
1590
1591         return 0;
1592 }
1593
1594 static const struct rfkill_ops acer_rfkill_ops = {
1595         .set_block = acer_rfkill_set,
1596 };
1597
1598 static struct rfkill *acer_rfkill_register(struct device *dev,
1599                                            enum rfkill_type type,
1600                                            char *name, u32 cap)
1601 {
1602         int err;
1603         struct rfkill *rfkill_dev;
1604         u32 state;
1605         acpi_status status;
1606
1607         rfkill_dev = rfkill_alloc(name, dev, type,
1608                                   &acer_rfkill_ops,
1609                                   (void *)(unsigned long)cap);
1610         if (!rfkill_dev)
1611                 return ERR_PTR(-ENOMEM);
1612
1613         status = get_u32(&state, cap);
1614
1615         err = rfkill_register(rfkill_dev);
1616         if (err) {
1617                 rfkill_destroy(rfkill_dev);
1618                 return ERR_PTR(err);
1619         }
1620
1621         if (ACPI_SUCCESS(status))
1622                 rfkill_set_sw_state(rfkill_dev, !state);
1623
1624         return rfkill_dev;
1625 }
1626
1627 static int acer_rfkill_init(struct device *dev)
1628 {
1629         int err;
1630
1631         if (has_cap(ACER_CAP_WIRELESS)) {
1632                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1633                         "acer-wireless", ACER_CAP_WIRELESS);
1634                 if (IS_ERR(wireless_rfkill)) {
1635                         err = PTR_ERR(wireless_rfkill);
1636                         goto error_wireless;
1637                 }
1638         }
1639
1640         if (has_cap(ACER_CAP_BLUETOOTH)) {
1641                 bluetooth_rfkill = acer_rfkill_register(dev,
1642                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1643                         ACER_CAP_BLUETOOTH);
1644                 if (IS_ERR(bluetooth_rfkill)) {
1645                         err = PTR_ERR(bluetooth_rfkill);
1646                         goto error_bluetooth;
1647                 }
1648         }
1649
1650         if (has_cap(ACER_CAP_THREEG)) {
1651                 threeg_rfkill = acer_rfkill_register(dev,
1652                         RFKILL_TYPE_WWAN, "acer-threeg",
1653                         ACER_CAP_THREEG);
1654                 if (IS_ERR(threeg_rfkill)) {
1655                         err = PTR_ERR(threeg_rfkill);
1656                         goto error_threeg;
1657                 }
1658         }
1659
1660         rfkill_inited = true;
1661
1662         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1663             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1664                 schedule_delayed_work(&acer_rfkill_work,
1665                         round_jiffies_relative(HZ));
1666
1667         return 0;
1668
1669 error_threeg:
1670         if (has_cap(ACER_CAP_BLUETOOTH)) {
1671                 rfkill_unregister(bluetooth_rfkill);
1672                 rfkill_destroy(bluetooth_rfkill);
1673         }
1674 error_bluetooth:
1675         if (has_cap(ACER_CAP_WIRELESS)) {
1676                 rfkill_unregister(wireless_rfkill);
1677                 rfkill_destroy(wireless_rfkill);
1678         }
1679 error_wireless:
1680         return err;
1681 }
1682
1683 static void acer_rfkill_exit(void)
1684 {
1685         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1686             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1687                 cancel_delayed_work_sync(&acer_rfkill_work);
1688
1689         if (has_cap(ACER_CAP_WIRELESS)) {
1690                 rfkill_unregister(wireless_rfkill);
1691                 rfkill_destroy(wireless_rfkill);
1692         }
1693
1694         if (has_cap(ACER_CAP_BLUETOOTH)) {
1695                 rfkill_unregister(bluetooth_rfkill);
1696                 rfkill_destroy(bluetooth_rfkill);
1697         }
1698
1699         if (has_cap(ACER_CAP_THREEG)) {
1700                 rfkill_unregister(threeg_rfkill);
1701                 rfkill_destroy(threeg_rfkill);
1702         }
1703         return;
1704 }
1705
1706 static void acer_wmi_notify(u32 value, void *context)
1707 {
1708         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1709         union acpi_object *obj;
1710         struct event_return_value return_value;
1711         acpi_status status;
1712         u16 device_state;
1713         const struct key_entry *key;
1714         u32 scancode;
1715
1716         status = wmi_get_event_data(value, &response);
1717         if (status != AE_OK) {
1718                 pr_warn("bad event status 0x%x\n", status);
1719                 return;
1720         }
1721
1722         obj = (union acpi_object *)response.pointer;
1723
1724         if (!obj)
1725                 return;
1726         if (obj->type != ACPI_TYPE_BUFFER) {
1727                 pr_warn("Unknown response received %d\n", obj->type);
1728                 kfree(obj);
1729                 return;
1730         }
1731         if (obj->buffer.length != 8) {
1732                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1733                 kfree(obj);
1734                 return;
1735         }
1736
1737         return_value = *((struct event_return_value *)obj->buffer.pointer);
1738         kfree(obj);
1739
1740         switch (return_value.function) {
1741         case WMID_HOTKEY_EVENT:
1742                 device_state = return_value.device_state;
1743                 pr_debug("device state: 0x%x\n", device_state);
1744
1745                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1746                                                         return_value.key_num);
1747                 if (!key) {
1748                         pr_warn("Unknown key number - 0x%x\n",
1749                                 return_value.key_num);
1750                 } else {
1751                         scancode = return_value.key_num;
1752                         switch (key->keycode) {
1753                         case KEY_WLAN:
1754                         case KEY_BLUETOOTH:
1755                                 if (has_cap(ACER_CAP_WIRELESS))
1756                                         rfkill_set_sw_state(wireless_rfkill,
1757                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1758                                 if (has_cap(ACER_CAP_THREEG))
1759                                         rfkill_set_sw_state(threeg_rfkill,
1760                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1761                                 if (has_cap(ACER_CAP_BLUETOOTH))
1762                                         rfkill_set_sw_state(bluetooth_rfkill,
1763                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1764                                 break;
1765                         case KEY_TOUCHPAD_TOGGLE:
1766                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1767                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1768                         }
1769                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1770                 }
1771                 break;
1772         case WMID_ACCEL_EVENT:
1773                 acer_gsensor_event();
1774                 break;
1775         default:
1776                 pr_warn("Unknown function number - %d - %d\n",
1777                         return_value.function, return_value.key_num);
1778                 break;
1779         }
1780 }
1781
1782 static acpi_status __init
1783 wmid3_set_function_mode(struct func_input_params *params,
1784                         struct func_return_value *return_value)
1785 {
1786         acpi_status status;
1787         union acpi_object *obj;
1788
1789         struct acpi_buffer input = { sizeof(struct func_input_params), params };
1790         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1791
1792         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1793         if (ACPI_FAILURE(status))
1794                 return status;
1795
1796         obj = output.pointer;
1797
1798         if (!obj)
1799                 return AE_ERROR;
1800         else if (obj->type != ACPI_TYPE_BUFFER) {
1801                 kfree(obj);
1802                 return AE_ERROR;
1803         }
1804         if (obj->buffer.length != 4) {
1805                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1806                 kfree(obj);
1807                 return AE_ERROR;
1808         }
1809
1810         *return_value = *((struct func_return_value *)obj->buffer.pointer);
1811         kfree(obj);
1812
1813         return status;
1814 }
1815
1816 static int __init acer_wmi_enable_ec_raw(void)
1817 {
1818         struct func_return_value return_value;
1819         acpi_status status;
1820         struct func_input_params params = {
1821                 .function_num = 0x1,
1822                 .commun_devices = 0xFFFF,
1823                 .devices = 0xFFFF,
1824                 .app_status = 0x00,             /* Launch Manager Deactive */
1825                 .app_mask = 0x01,
1826         };
1827
1828         status = wmid3_set_function_mode(&params, &return_value);
1829
1830         if (return_value.error_code || return_value.ec_return_value)
1831                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1832                         return_value.error_code,
1833                         return_value.ec_return_value);
1834         else
1835                 pr_info("Enabled EC raw mode\n");
1836
1837         return status;
1838 }
1839
1840 static int __init acer_wmi_enable_lm(void)
1841 {
1842         struct func_return_value return_value;
1843         acpi_status status;
1844         struct func_input_params params = {
1845                 .function_num = 0x1,
1846                 .commun_devices = 0xFFFF,
1847                 .devices = 0xFFFF,
1848                 .app_status = 0x01,            /* Launch Manager Active */
1849                 .app_mask = 0x01,
1850         };
1851
1852         status = wmid3_set_function_mode(&params, &return_value);
1853
1854         if (return_value.error_code || return_value.ec_return_value)
1855                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1856                         return_value.error_code,
1857                         return_value.ec_return_value);
1858
1859         return status;
1860 }
1861
1862 static int __init acer_wmi_enable_rf_button(void)
1863 {
1864         struct func_return_value return_value;
1865         acpi_status status;
1866         struct func_input_params params = {
1867                 .function_num = 0x1,
1868                 .commun_devices = 0xFFFF,
1869                 .devices = 0xFFFF,
1870                 .app_status = 0x10,            /* RF Button Active */
1871                 .app_mask = 0x10,
1872         };
1873
1874         status = wmid3_set_function_mode(&params, &return_value);
1875
1876         if (return_value.error_code || return_value.ec_return_value)
1877                 pr_warn("Enabling RF Button failed: 0x%x - 0x%x\n",
1878                         return_value.error_code,
1879                         return_value.ec_return_value);
1880
1881         return status;
1882 }
1883
1884 static int __init acer_wmi_accel_setup(void)
1885 {
1886         struct acpi_device *adev;
1887         int err;
1888
1889         adev = acpi_dev_get_first_match_dev("BST0001", NULL, -1);
1890         if (!adev)
1891                 return -ENODEV;
1892
1893         gsensor_handle = acpi_device_handle(adev);
1894         acpi_dev_put(adev);
1895
1896         interface->capability |= ACER_CAP_ACCEL;
1897
1898         acer_wmi_accel_dev = input_allocate_device();
1899         if (!acer_wmi_accel_dev)
1900                 return -ENOMEM;
1901
1902         acer_wmi_accel_dev->open = acer_gsensor_open;
1903
1904         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1905         acer_wmi_accel_dev->phys = "wmi/input1";
1906         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1907         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1908         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1909         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1910         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1911
1912         err = input_register_device(acer_wmi_accel_dev);
1913         if (err)
1914                 goto err_free_dev;
1915
1916         return 0;
1917
1918 err_free_dev:
1919         input_free_device(acer_wmi_accel_dev);
1920         return err;
1921 }
1922
1923 static void acer_wmi_accel_destroy(void)
1924 {
1925         input_unregister_device(acer_wmi_accel_dev);
1926 }
1927
1928 static int __init acer_wmi_input_setup(void)
1929 {
1930         acpi_status status;
1931         int err;
1932
1933         acer_wmi_input_dev = input_allocate_device();
1934         if (!acer_wmi_input_dev)
1935                 return -ENOMEM;
1936
1937         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1938         acer_wmi_input_dev->phys = "wmi/input0";
1939         acer_wmi_input_dev->id.bustype = BUS_HOST;
1940
1941         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1942         if (err)
1943                 goto err_free_dev;
1944
1945         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1946                                                 acer_wmi_notify, NULL);
1947         if (ACPI_FAILURE(status)) {
1948                 err = -EIO;
1949                 goto err_free_dev;
1950         }
1951
1952         err = input_register_device(acer_wmi_input_dev);
1953         if (err)
1954                 goto err_uninstall_notifier;
1955
1956         return 0;
1957
1958 err_uninstall_notifier:
1959         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1960 err_free_dev:
1961         input_free_device(acer_wmi_input_dev);
1962         return err;
1963 }
1964
1965 static void acer_wmi_input_destroy(void)
1966 {
1967         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1968         input_unregister_device(acer_wmi_input_dev);
1969 }
1970
1971 /*
1972  * debugfs functions
1973  */
1974 static u32 get_wmid_devices(void)
1975 {
1976         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1977         union acpi_object *obj;
1978         acpi_status status;
1979         u32 devices = 0;
1980
1981         status = wmi_query_block(WMID_GUID2, 0, &out);
1982         if (ACPI_FAILURE(status))
1983                 return 0;
1984
1985         obj = (union acpi_object *) out.pointer;
1986         if (obj) {
1987                 if (obj->type == ACPI_TYPE_BUFFER &&
1988                         (obj->buffer.length == sizeof(u32) ||
1989                         obj->buffer.length == sizeof(u64))) {
1990                         devices = *((u32 *) obj->buffer.pointer);
1991                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1992                         devices = (u32) obj->integer.value;
1993                 }
1994         }
1995
1996         kfree(out.pointer);
1997         return devices;
1998 }
1999
2000 /*
2001  * Platform device
2002  */
2003 static int acer_platform_probe(struct platform_device *device)
2004 {
2005         int err;
2006
2007         if (has_cap(ACER_CAP_MAILLED)) {
2008                 err = acer_led_init(&device->dev);
2009                 if (err)
2010                         goto error_mailled;
2011         }
2012
2013         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2014                 err = acer_backlight_init(&device->dev);
2015                 if (err)
2016                         goto error_brightness;
2017         }
2018
2019         err = acer_rfkill_init(&device->dev);
2020         if (err)
2021                 goto error_rfkill;
2022
2023         return err;
2024
2025 error_rfkill:
2026         if (has_cap(ACER_CAP_BRIGHTNESS))
2027                 acer_backlight_exit();
2028 error_brightness:
2029         if (has_cap(ACER_CAP_MAILLED))
2030                 acer_led_exit();
2031 error_mailled:
2032         return err;
2033 }
2034
2035 static int acer_platform_remove(struct platform_device *device)
2036 {
2037         if (has_cap(ACER_CAP_MAILLED))
2038                 acer_led_exit();
2039         if (has_cap(ACER_CAP_BRIGHTNESS))
2040                 acer_backlight_exit();
2041
2042         acer_rfkill_exit();
2043         return 0;
2044 }
2045
2046 #ifdef CONFIG_PM_SLEEP
2047 static int acer_suspend(struct device *dev)
2048 {
2049         u32 value;
2050         struct acer_data *data = &interface->data;
2051
2052         if (!data)
2053                 return -ENOMEM;
2054
2055         if (has_cap(ACER_CAP_MAILLED)) {
2056                 get_u32(&value, ACER_CAP_MAILLED);
2057                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2058                 data->mailled = value;
2059         }
2060
2061         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2062                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2063                 data->brightness = value;
2064         }
2065
2066         return 0;
2067 }
2068
2069 static int acer_resume(struct device *dev)
2070 {
2071         struct acer_data *data = &interface->data;
2072
2073         if (!data)
2074                 return -ENOMEM;
2075
2076         if (has_cap(ACER_CAP_MAILLED))
2077                 set_u32(data->mailled, ACER_CAP_MAILLED);
2078
2079         if (has_cap(ACER_CAP_BRIGHTNESS))
2080                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2081
2082         if (has_cap(ACER_CAP_ACCEL))
2083                 acer_gsensor_init();
2084
2085         return 0;
2086 }
2087 #else
2088 #define acer_suspend    NULL
2089 #define acer_resume     NULL
2090 #endif
2091
2092 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2093
2094 static void acer_platform_shutdown(struct platform_device *device)
2095 {
2096         struct acer_data *data = &interface->data;
2097
2098         if (!data)
2099                 return;
2100
2101         if (has_cap(ACER_CAP_MAILLED))
2102                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2103 }
2104
2105 static struct platform_driver acer_platform_driver = {
2106         .driver = {
2107                 .name = "acer-wmi",
2108                 .pm = &acer_pm,
2109         },
2110         .probe = acer_platform_probe,
2111         .remove = acer_platform_remove,
2112         .shutdown = acer_platform_shutdown,
2113 };
2114
2115 static struct platform_device *acer_platform_device;
2116
2117 static void remove_debugfs(void)
2118 {
2119         debugfs_remove_recursive(interface->debug.root);
2120 }
2121
2122 static void __init create_debugfs(void)
2123 {
2124         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2125
2126         debugfs_create_u32("devices", S_IRUGO, interface->debug.root,
2127                            &interface->debug.wmid_devices);
2128 }
2129
2130 static int __init acer_wmi_init(void)
2131 {
2132         int err;
2133
2134         pr_info("Acer Laptop ACPI-WMI Extras\n");
2135
2136         if (dmi_check_system(acer_blacklist)) {
2137                 pr_info("Blacklisted hardware detected - not loading\n");
2138                 return -ENODEV;
2139         }
2140
2141         find_quirks();
2142
2143         /*
2144          * The AMW0_GUID1 wmi is not only found on Acer family but also other
2145          * machines like Lenovo, Fujitsu and Medion. In the past days,
2146          * acer-wmi driver handled those non-Acer machines by quirks list.
2147          * But actually acer-wmi driver was loaded on any machines that have
2148          * AMW0_GUID1. This behavior is strange because those machines should
2149          * be supported by appropriate wmi drivers. e.g. fujitsu-laptop,
2150          * ideapad-laptop. So, here checks the machine that has AMW0_GUID1
2151          * should be in Acer/Gateway/Packard Bell white list, or it's already
2152          * in the past quirk list.
2153          */
2154         if (wmi_has_guid(AMW0_GUID1) &&
2155             !dmi_check_system(amw0_whitelist) &&
2156             quirks == &quirk_unknown) {
2157                 pr_debug("Unsupported machine has AMW0_GUID1, unable to load\n");
2158                 return -ENODEV;
2159         }
2160
2161         /*
2162          * Detect which ACPI-WMI interface we're using.
2163          */
2164         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2165                 interface = &AMW0_V2_interface;
2166
2167         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2168                 interface = &wmid_interface;
2169
2170         if (wmi_has_guid(WMID_GUID3))
2171                 interface = &wmid_v2_interface;
2172
2173         if (interface)
2174                 dmi_walk(type_aa_dmi_decode, NULL);
2175
2176         if (wmi_has_guid(WMID_GUID2) && interface) {
2177                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2178                         pr_err("Unable to detect available WMID devices\n");
2179                         return -ENODEV;
2180                 }
2181                 /* WMID always provides brightness methods */
2182                 interface->capability |= ACER_CAP_BRIGHTNESS;
2183         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2184                 pr_err("No WMID device detection method found\n");
2185                 return -ENODEV;
2186         }
2187
2188         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2189                 interface = &AMW0_interface;
2190
2191                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2192                         pr_err("Unable to detect available AMW0 devices\n");
2193                         return -ENODEV;
2194                 }
2195         }
2196
2197         if (wmi_has_guid(AMW0_GUID1))
2198                 AMW0_find_mailled();
2199
2200         if (!interface) {
2201                 pr_err("No or unsupported WMI interface, unable to load\n");
2202                 return -ENODEV;
2203         }
2204
2205         set_quirks();
2206
2207         if (dmi_check_system(video_vendor_dmi_table))
2208                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2209
2210         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2211                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2212
2213         if (wmi_has_guid(WMID_GUID3)) {
2214                 if (ACPI_FAILURE(acer_wmi_enable_rf_button()))
2215                         pr_warn("Cannot enable RF Button Driver\n");
2216
2217                 if (ec_raw_mode) {
2218                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2219                                 pr_err("Cannot enable EC raw mode\n");
2220                                 return -ENODEV;
2221                         }
2222                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2223                         pr_err("Cannot enable Launch Manager mode\n");
2224                         return -ENODEV;
2225                 }
2226         } else if (ec_raw_mode) {
2227                 pr_info("No WMID EC raw mode enable method\n");
2228         }
2229
2230         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2231                 err = acer_wmi_input_setup();
2232                 if (err)
2233                         return err;
2234                 err = acer_wmi_accel_setup();
2235                 if (err && err != -ENODEV)
2236                         pr_warn("Cannot enable accelerometer\n");
2237         }
2238
2239         err = platform_driver_register(&acer_platform_driver);
2240         if (err) {
2241                 pr_err("Unable to register platform driver\n");
2242                 goto error_platform_register;
2243         }
2244
2245         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2246         if (!acer_platform_device) {
2247                 err = -ENOMEM;
2248                 goto error_device_alloc;
2249         }
2250
2251         err = platform_device_add(acer_platform_device);
2252         if (err)
2253                 goto error_device_add;
2254
2255         if (wmi_has_guid(WMID_GUID2)) {
2256                 interface->debug.wmid_devices = get_wmid_devices();
2257                 create_debugfs();
2258         }
2259
2260         /* Override any initial settings with values from the commandline */
2261         acer_commandline_init();
2262
2263         return 0;
2264
2265 error_device_add:
2266         platform_device_put(acer_platform_device);
2267 error_device_alloc:
2268         platform_driver_unregister(&acer_platform_driver);
2269 error_platform_register:
2270         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2271                 acer_wmi_input_destroy();
2272         if (has_cap(ACER_CAP_ACCEL))
2273                 acer_wmi_accel_destroy();
2274
2275         return err;
2276 }
2277
2278 static void __exit acer_wmi_exit(void)
2279 {
2280         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2281                 acer_wmi_input_destroy();
2282
2283         if (has_cap(ACER_CAP_ACCEL))
2284                 acer_wmi_accel_destroy();
2285
2286         remove_debugfs();
2287         platform_device_unregister(acer_platform_device);
2288         platform_driver_unregister(&acer_platform_driver);
2289
2290         pr_info("Acer Laptop WMI Extras unloaded\n");
2291         return;
2292 }
2293
2294 module_init(acer_wmi_init);
2295 module_exit(acer_wmi_exit);