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         struct dentry *devices;
 263         u32 wmid_devices;
 264 };
 265
 266 static struct rfkill *wireless_rfkill;
 267 static struct rfkill *bluetooth_rfkill;
 268 static struct rfkill *threeg_rfkill;
 269 static bool rfkill_inited;
 270
 271 /* Each low-level interface must define at least some of the following */
 272 struct wmi_interface {
 273         /* The WMI device type */
 274         u32 type;
 275
 276         /* The capabilities this interface provides */
 277         u32 capability;
 278
 279         /* Private data for the current interface */
 280         struct acer_data data;
 281
 282         /* debugfs entries associated with this interface */
 283         struct acer_debug debug;
 284 };
 285
 286 /* The static interface pointer, points to the currently detected interface */
 287 static struct wmi_interface *interface;
 288
 289 /*
 290  * Embedded Controller quirks
 291  * Some laptops require us to directly access the EC to either enable or query
 292  * features that are not available through WMI.
 293  */
 294
 295 struct quirk_entry {
 296         u8 wireless;
 297         u8 mailled;
 298         s8 brightness;
 299         u8 bluetooth;
 300 };
 301
 302 static struct quirk_entry *quirks;
 303
 304 static void __init set_quirks(void)
 305 {
 306         if (!interface)
 307                 return;
 308
 309         if (quirks->mailled)
 310                 interface->capability |= ACER_CAP_MAILLED;
 311
 312         if (quirks->brightness)
 313                 interface->capability |= ACER_CAP_BRIGHTNESS;
 314 }
 315
 316 static int __init dmi_matched(const struct dmi_system_id *dmi)
 317 {
 318         quirks = dmi->driver_data;
 319         return 1;
 320 }
 321
 322 static struct quirk_entry quirk_unknown = {
 323 };
 324
 325 static struct quirk_entry quirk_acer_aspire_1520 = {
 326         .brightness = -1,
 327 };
 328
 329 static struct quirk_entry quirk_acer_travelmate_2490 = {
 330         .mailled = 1,
 331 };
 332
 333 /* This AMW0 laptop has no bluetooth */
 334 static struct quirk_entry quirk_medion_md_98300 = {
 335         .wireless = 1,
 336 };
 337
 338 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 339         .wireless = 2,
 340 };
 341
 342 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 343         .wireless = 3,
 344 };
 345
 346 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
 347 static const struct dmi_system_id acer_blacklist[] __initconst = {
 348         {
 349                 .ident = "Acer Aspire One (SSD)",
 350                 .matches = {
 351                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 352                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 353                 },
 354         },
 355         {
 356                 .ident = "Acer Aspire One (HDD)",
 357                 .matches = {
 358                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 359                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 360                 },
 361         },
 362         {}
 363 };
 364
 365 static const struct dmi_system_id amw0_whitelist[] __initconst = {
 366         {
 367                 .ident = "Acer",
 368                 .matches = {
 369                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 370                 },
 371         },
 372         {
 373                 .ident = "Gateway",
 374                 .matches = {
 375                         DMI_MATCH(DMI_SYS_VENDOR, "Gateway"),
 376                 },
 377         },
 378         {
 379                 .ident = "Packard Bell",
 380                 .matches = {
 381                         DMI_MATCH(DMI_SYS_VENDOR, "Packard Bell"),
 382                 },
 383         },
 384         {}
 385 };
 386
 387 /*
 388  * This quirk table is only for Acer/Gateway/Packard Bell family
 389  * that those machines are supported by acer-wmi driver.
 390  */
 391 static const struct dmi_system_id acer_quirks[] __initconst = {
 392         {
 393                 .callback = dmi_matched,
 394                 .ident = "Acer Aspire 1360",
 395                 .matches = {
 396                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 397                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 398                 },
 399                 .driver_data = &quirk_acer_aspire_1520,
 400         },
 401         {
 402                 .callback = dmi_matched,
 403                 .ident = "Acer Aspire 1520",
 404                 .matches = {
 405                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 406                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 407                 },
 408                 .driver_data = &quirk_acer_aspire_1520,
 409         },
 410         {
 411                 .callback = dmi_matched,
 412                 .ident = "Acer Aspire 3100",
 413                 .matches = {
 414                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 415                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 416                 },
 417                 .driver_data = &quirk_acer_travelmate_2490,
 418         },
 419         {
 420                 .callback = dmi_matched,
 421                 .ident = "Acer Aspire 3610",
 422                 .matches = {
 423                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 424                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 425                 },
 426                 .driver_data = &quirk_acer_travelmate_2490,
 427         },
 428         {
 429                 .callback = dmi_matched,
 430                 .ident = "Acer Aspire 5100",
 431                 .matches = {
 432                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 433                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 434                 },
 435                 .driver_data = &quirk_acer_travelmate_2490,
 436         },
 437         {
 438                 .callback = dmi_matched,
 439                 .ident = "Acer Aspire 5610",
 440                 .matches = {
 441                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 442                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 443                 },
 444                 .driver_data = &quirk_acer_travelmate_2490,
 445         },
 446         {
 447                 .callback = dmi_matched,
 448                 .ident = "Acer Aspire 5630",
 449                 .matches = {
 450                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 451                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 452                 },
 453                 .driver_data = &quirk_acer_travelmate_2490,
 454         },
 455         {
 456                 .callback = dmi_matched,
 457                 .ident = "Acer Aspire 5650",
 458                 .matches = {
 459                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 460                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 461                 },
 462                 .driver_data = &quirk_acer_travelmate_2490,
 463         },
 464         {
 465                 .callback = dmi_matched,
 466                 .ident = "Acer Aspire 5680",
 467                 .matches = {
 468                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 469                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 470                 },
 471                 .driver_data = &quirk_acer_travelmate_2490,
 472         },
 473         {
 474                 .callback = dmi_matched,
 475                 .ident = "Acer Aspire 9110",
 476                 .matches = {
 477                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 478                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 479                 },
 480                 .driver_data = &quirk_acer_travelmate_2490,
 481         },
 482         {
 483                 .callback = dmi_matched,
 484                 .ident = "Acer TravelMate 2490",
 485                 .matches = {
 486                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 487                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 488                 },
 489                 .driver_data = &quirk_acer_travelmate_2490,
 490         },
 491         {
 492                 .callback = dmi_matched,
 493                 .ident = "Acer TravelMate 4200",
 494                 .matches = {
 495                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 496                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 497                 },
 498                 .driver_data = &quirk_acer_travelmate_2490,
 499         },
 500         {}
 501 };
 502
 503 /*
 504  * This quirk list is for those non-acer machines that have AMW0_GUID1
 505  * but supported by acer-wmi in past days. Keeping this quirk list here
 506  * is only for backward compatible. Please do not add new machine to
 507  * here anymore. Those non-acer machines should be supported by
 508  * appropriate wmi drivers.
 509  */
 510 static const struct dmi_system_id non_acer_quirks[] __initconst = {
 511         {
 512                 .callback = dmi_matched,
 513                 .ident = "Fujitsu Siemens Amilo Li 1718",
 514                 .matches = {
 515                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 516                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 517                 },
 518                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 519         },
 520         {
 521                 .callback = dmi_matched,
 522                 .ident = "Medion MD 98300",
 523                 .matches = {
 524                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 525                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 526                 },
 527                 .driver_data = &quirk_medion_md_98300,
 528         },
 529         {
 530                 .callback = dmi_matched,
 531                 .ident = "Lenovo Ideapad S205",
 532                 .matches = {
 533                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 534                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 535                 },
 536                 .driver_data = &quirk_lenovo_ideapad_s205,
 537         },
 538         {
 539                 .callback = dmi_matched,
 540                 .ident = "Lenovo Ideapad S205 (Brazos)",
 541                 .matches = {
 542                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 543                         DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 544                 },
 545                 .driver_data = &quirk_lenovo_ideapad_s205,
 546         },
 547         {
 548                 .callback = dmi_matched,
 549                 .ident = "Lenovo 3000 N200",
 550                 .matches = {
 551                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 552                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 553                 },
 554                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 555         },
 556         {
 557                 .callback = dmi_matched,
 558                 .ident = "Lenovo Ideapad S205-10382JG",
 559                 .matches = {
 560                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 561                         DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
 562                 },
 563                 .driver_data = &quirk_lenovo_ideapad_s205,
 564         },
 565         {
 566                 .callback = dmi_matched,
 567                 .ident = "Lenovo Ideapad S205-1038DPG",
 568                 .matches = {
 569                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 570                         DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
 571                 },
 572                 .driver_data = &quirk_lenovo_ideapad_s205,
 573         },
 574         {}
 575 };
 576
 577 static int __init
 578 video_set_backlight_video_vendor(const struct dmi_system_id *d)
 579 {
 580         interface->capability &= ~ACER_CAP_BRIGHTNESS;
 581         pr_info("Brightness must be controlled by generic video driver\n");
 582         return 0;
 583 }
 584
 585 static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
 586         {
 587                 .callback = video_set_backlight_video_vendor,
 588                 .ident = "Acer TravelMate 4750",
 589                 .matches = {
 590                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 591                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 592                 },
 593         },
 594         {
 595                 .callback = video_set_backlight_video_vendor,
 596                 .ident = "Acer Extensa 5235",
 597                 .matches = {
 598                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 599                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 600                 },
 601         },
 602         {
 603                 .callback = video_set_backlight_video_vendor,
 604                 .ident = "Acer TravelMate 5760",
 605                 .matches = {
 606                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 607                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 608                 },
 609         },
 610         {
 611                 .callback = video_set_backlight_video_vendor,
 612                 .ident = "Acer Aspire 5750",
 613                 .matches = {
 614                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 615                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 616                 },
 617         },
 618         {
 619                 .callback = video_set_backlight_video_vendor,
 620                 .ident = "Acer Aspire 5741",
 621                 .matches = {
 622                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 623                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
 624                 },
 625         },
 626         {
 627                 /*
 628                  * Note no video_set_backlight_video_vendor, we must use the
 629                  * acer interface, as there is no native backlight interface.
 630                  */
 631                 .ident = "Acer KAV80",
 632                 .matches = {
 633                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 634                         DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
 635                 },
 636         },
 637         {}
 638 };
 639
 640 /* Find which quirks are needed for a particular vendor/ model pair */
 641 static void __init find_quirks(void)
 642 {
 643         if (!force_series) {
 644                 dmi_check_system(acer_quirks);
 645                 dmi_check_system(non_acer_quirks);
 646         } else if (force_series == 2490) {
 647                 quirks = &quirk_acer_travelmate_2490;
 648         }
 649
 650         if (quirks == NULL)
 651                 quirks = &quirk_unknown;
 652
 653         set_quirks();
 654 }
 655
 656 /*
 657  * General interface convenience methods
 658  */
 659
 660 static bool has_cap(u32 cap)
 661 {
 662         return interface->capability & cap;
 663 }
 664
 665 /*
 666  * AMW0 (V1) interface
 667  */
 668 struct wmab_args {
 669         u32 eax;
 670         u32 ebx;
 671         u32 ecx;
 672         u32 edx;
 673 };
 674
 675 struct wmab_ret {
 676         u32 eax;
 677         u32 ebx;
 678         u32 ecx;
 679         u32 edx;
 680         u32 eex;
 681 };
 682
 683 static acpi_status wmab_execute(struct wmab_args *regbuf,
 684 struct acpi_buffer *result)
 685 {
 686         struct acpi_buffer input;
 687         acpi_status status;
 688         input.length = sizeof(struct wmab_args);
 689         input.pointer = (u8 *)regbuf;
 690
 691         status = wmi_evaluate_method(AMW0_GUID1, 0, 1, &input, result);
 692
 693         return status;
 694 }
 695
 696 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 697 {
 698         int err;
 699         u8 result;
 700
 701         switch (cap) {
 702         case ACER_CAP_MAILLED:
 703                 switch (quirks->mailled) {
 704                 default:
 705                         err = ec_read(0xA, &result);
 706                         if (err)
 707                                 return AE_ERROR;
 708                         *value = (result >> 7) & 0x1;
 709                         return AE_OK;
 710                 }
 711                 break;
 712         case ACER_CAP_WIRELESS:
 713                 switch (quirks->wireless) {
 714                 case 1:
 715                         err = ec_read(0x7B, &result);
 716                         if (err)
 717                                 return AE_ERROR;
 718                         *value = result & 0x1;
 719                         return AE_OK;
 720                 case 2:
 721                         err = ec_read(0x71, &result);
 722                         if (err)
 723                                 return AE_ERROR;
 724                         *value = result & 0x1;
 725                         return AE_OK;
 726                 case 3:
 727                         err = ec_read(0x78, &result);
 728                         if (err)
 729                                 return AE_ERROR;
 730                         *value = result & 0x1;
 731                         return AE_OK;
 732                 default:
 733                         err = ec_read(0xA, &result);
 734                         if (err)
 735                                 return AE_ERROR;
 736                         *value = (result >> 2) & 0x1;
 737                         return AE_OK;
 738                 }
 739                 break;
 740         case ACER_CAP_BLUETOOTH:
 741                 switch (quirks->bluetooth) {
 742                 default:
 743                         err = ec_read(0xA, &result);
 744                         if (err)
 745                                 return AE_ERROR;
 746                         *value = (result >> 4) & 0x1;
 747                         return AE_OK;
 748                 }
 749                 break;
 750         case ACER_CAP_BRIGHTNESS:
 751                 switch (quirks->brightness) {
 752                 default:
 753                         err = ec_read(0x83, &result);
 754                         if (err)
 755                                 return AE_ERROR;
 756                         *value = result;
 757                         return AE_OK;
 758                 }
 759                 break;
 760         default:
 761                 return AE_ERROR;
 762         }
 763         return AE_OK;
 764 }
 765
 766 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 767 {
 768         struct wmab_args args;
 769
 770         args.eax = ACER_AMW0_WRITE;
 771         args.ebx = value ? (1<<8) : 0;
 772         args.ecx = args.edx = 0;
 773
 774         switch (cap) {
 775         case ACER_CAP_MAILLED:
 776                 if (value > 1)
 777                         return AE_BAD_PARAMETER;
 778                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 779                 break;
 780         case ACER_CAP_WIRELESS:
 781                 if (value > 1)
 782                         return AE_BAD_PARAMETER;
 783                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 784                 break;
 785         case ACER_CAP_BLUETOOTH:
 786                 if (value > 1)
 787                         return AE_BAD_PARAMETER;
 788                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 789                 break;
 790         case ACER_CAP_BRIGHTNESS:
 791                 if (value > max_brightness)
 792                         return AE_BAD_PARAMETER;
 793                 switch (quirks->brightness) {
 794                 default:
 795                         return ec_write(0x83, value);
 796                         break;
 797                 }
 798         default:
 799                 return AE_ERROR;
 800         }
 801
 802         /* Actually do the set */
 803         return wmab_execute(&args, NULL);
 804 }
 805
 806 static acpi_status __init AMW0_find_mailled(void)
 807 {
 808         struct wmab_args args;
 809         struct wmab_ret ret;
 810         acpi_status status = AE_OK;
 811         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 812         union acpi_object *obj;
 813
 814         args.eax = 0x86;
 815         args.ebx = args.ecx = args.edx = 0;
 816
 817         status = wmab_execute(&args, &out);
 818         if (ACPI_FAILURE(status))
 819                 return status;
 820
 821         obj = (union acpi_object *) out.pointer;
 822         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 823         obj->buffer.length == sizeof(struct wmab_ret)) {
 824                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 825         } else {
 826                 kfree(out.pointer);
 827                 return AE_ERROR;
 828         }
 829
 830         if (ret.eex & 0x1)
 831                 interface->capability |= ACER_CAP_MAILLED;
 832
 833         kfree(out.pointer);
 834
 835         return AE_OK;
 836 }
 837
 838 static const struct acpi_device_id norfkill_ids[] __initconst = {
 839         { "VPC2004", 0},
 840         { "IBM0068", 0},
 841         { "LEN0068", 0},
 842         { "SNY5001", 0},        /* sony-laptop in charge */
 843         { "HPQ6601", 0},
 844         { "", 0},
 845 };
 846
 847 static int __init AMW0_set_cap_acpi_check_device(void)
 848 {
 849         const struct acpi_device_id *id;
 850
 851         for (id = norfkill_ids; id->id[0]; id++)
 852                 if (acpi_dev_found(id->id))
 853                         return true;
 854
 855         return false;
 856 }
 857
 858 static acpi_status __init AMW0_set_capabilities(void)
 859 {
 860         struct wmab_args args;
 861         struct wmab_ret ret;
 862         acpi_status status;
 863         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 864         union acpi_object *obj;
 865
 866         /*
 867          * On laptops with this strange GUID (non Acer), normal probing doesn't
 868          * work.
 869          */
 870         if (wmi_has_guid(AMW0_GUID2)) {
 871                 if ((quirks != &quirk_unknown) ||
 872                     !AMW0_set_cap_acpi_check_device())
 873                         interface->capability |= ACER_CAP_WIRELESS;
 874                 return AE_OK;
 875         }
 876
 877         args.eax = ACER_AMW0_WRITE;
 878         args.ecx = args.edx = 0;
 879
 880         args.ebx = 0xa2 << 8;
 881         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 882
 883         status = wmab_execute(&args, &out);
 884         if (ACPI_FAILURE(status))
 885                 return status;
 886
 887         obj = out.pointer;
 888         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 889         obj->buffer.length == sizeof(struct wmab_ret)) {
 890                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 891         } else {
 892                 status = AE_ERROR;
 893                 goto out;
 894         }
 895
 896         if (ret.eax & 0x1)
 897                 interface->capability |= ACER_CAP_WIRELESS;
 898
 899         args.ebx = 2 << 8;
 900         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 901
 902         /*
 903          * It's ok to use existing buffer for next wmab_execute call.
 904          * But we need to kfree(out.pointer) if next wmab_execute fail.
 905          */
 906         status = wmab_execute(&args, &out);
 907         if (ACPI_FAILURE(status))
 908                 goto out;
 909
 910         obj = (union acpi_object *) out.pointer;
 911         if (obj && obj->type == ACPI_TYPE_BUFFER
 912         && obj->buffer.length == sizeof(struct wmab_ret)) {
 913                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 914         } else {
 915                 status = AE_ERROR;
 916                 goto out;
 917         }
 918
 919         if (ret.eax & 0x1)
 920                 interface->capability |= ACER_CAP_BLUETOOTH;
 921
 922         /*
 923          * This appears to be safe to enable, since all Wistron based laptops
 924          * appear to use the same EC register for brightness, even if they
 925          * differ for wireless, etc
 926          */
 927         if (quirks->brightness >= 0)
 928                 interface->capability |= ACER_CAP_BRIGHTNESS;
 929
 930         status = AE_OK;
 931 out:
 932         kfree(out.pointer);
 933         return status;
 934 }
 935
 936 static struct wmi_interface AMW0_interface = {
 937         .type = ACER_AMW0,
 938 };
 939
 940 static struct wmi_interface AMW0_V2_interface = {
 941         .type = ACER_AMW0_V2,
 942 };
 943
 944 /*
 945  * New interface (The WMID interface)
 946  */
 947 static acpi_status
 948 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 949 {
 950         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 951         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 952         union acpi_object *obj;
 953         u32 tmp = 0;
 954         acpi_status status;
 955
 956         status = wmi_evaluate_method(WMID_GUID1, 0, method_id, &input, &result);
 957
 958         if (ACPI_FAILURE(status))
 959                 return status;
 960
 961         obj = (union acpi_object *) result.pointer;
 962         if (obj) {
 963                 if (obj->type == ACPI_TYPE_BUFFER &&
 964                         (obj->buffer.length == sizeof(u32) ||
 965                         obj->buffer.length == sizeof(u64))) {
 966                         tmp = *((u32 *) obj->buffer.pointer);
 967                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 968                         tmp = (u32) obj->integer.value;
 969                 }
 970         }
 971
 972         if (out)
 973                 *out = tmp;
 974
 975         kfree(result.pointer);
 976
 977         return status;
 978 }
 979
 980 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 981 {
 982         acpi_status status;
 983         u8 tmp;
 984         u32 result, method_id = 0;
 985
 986         switch (cap) {
 987         case ACER_CAP_WIRELESS:
 988                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 989                 break;
 990         case ACER_CAP_BLUETOOTH:
 991                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 992                 break;
 993         case ACER_CAP_BRIGHTNESS:
 994                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 995                 break;
 996         case ACER_CAP_THREEG:
 997                 method_id = ACER_WMID_GET_THREEG_METHODID;
 998                 break;
 999         case ACER_CAP_MAILLED:
1000                 if (quirks->mailled == 1) {
1001                         ec_read(0x9f, &tmp);
1002                         *value = tmp & 0x1;
1003                         return 0;
1004                 }
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         case ACER_WMID:
1332                 status = WMID_get_u32(value, cap);
1333                 break;
1334         case ACER_WMID_v2:
1335                 if (cap & (ACER_CAP_WIRELESS |
1336                            ACER_CAP_BLUETOOTH |
1337                            ACER_CAP_THREEG))
1338                         status = wmid_v2_get_u32(value, cap);
1339                 else if (wmi_has_guid(WMID_GUID2))
1340                         status = WMID_get_u32(value, cap);
1341                 break;
1342         }
1343
1344         return status;
1345 }
1346
1347 static acpi_status set_u32(u32 value, u32 cap)
1348 {
1349         acpi_status status;
1350
1351         if (interface->capability & cap) {
1352                 switch (interface->type) {
1353                 case ACER_AMW0:
1354                         return AMW0_set_u32(value, cap);
1355                 case ACER_AMW0_V2:
1356                         if (cap == ACER_CAP_MAILLED)
1357                                 return AMW0_set_u32(value, cap);
1358
1359                         /*
1360                          * On some models, some WMID methods don't toggle
1361                          * properly. For those cases, we want to run the AMW0
1362                          * method afterwards to be certain we've really toggled
1363                          * the device state.
1364                          */
1365                         if (cap == ACER_CAP_WIRELESS ||
1366                                 cap == ACER_CAP_BLUETOOTH) {
1367                                 status = WMID_set_u32(value, cap);
1368                                 if (ACPI_FAILURE(status))
1369                                         return status;
1370
1371                                 return AMW0_set_u32(value, cap);
1372                         }
1373                 case ACER_WMID:
1374                         return WMID_set_u32(value, cap);
1375                 case ACER_WMID_v2:
1376                         if (cap & (ACER_CAP_WIRELESS |
1377                                    ACER_CAP_BLUETOOTH |
1378                                    ACER_CAP_THREEG))
1379                                 return wmid_v2_set_u32(value, cap);
1380                         else if (wmi_has_guid(WMID_GUID2))
1381                                 return WMID_set_u32(value, cap);
1382                 default:
1383                         return AE_BAD_PARAMETER;
1384                 }
1385         }
1386         return AE_BAD_PARAMETER;
1387 }
1388
1389 static void __init acer_commandline_init(void)
1390 {
1391         /*
1392          * These will all fail silently if the value given is invalid, or the
1393          * capability isn't available on the given interface
1394          */
1395         if (mailled >= 0)
1396                 set_u32(mailled, ACER_CAP_MAILLED);
1397         if (!has_type_aa && threeg >= 0)
1398                 set_u32(threeg, ACER_CAP_THREEG);
1399         if (brightness >= 0)
1400                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1401 }
1402
1403 /*
1404  * LED device (Mail LED only, no other LEDs known yet)
1405  */
1406 static void mail_led_set(struct led_classdev *led_cdev,
1407 enum led_brightness value)
1408 {
1409         set_u32(value, ACER_CAP_MAILLED);
1410 }
1411
1412 static struct led_classdev mail_led = {
1413         .name = "acer-wmi::mail",
1414         .brightness_set = mail_led_set,
1415 };
1416
1417 static int acer_led_init(struct device *dev)
1418 {
1419         return led_classdev_register(dev, &mail_led);
1420 }
1421
1422 static void acer_led_exit(void)
1423 {
1424         set_u32(LED_OFF, ACER_CAP_MAILLED);
1425         led_classdev_unregister(&mail_led);
1426 }
1427
1428 /*
1429  * Backlight device
1430  */
1431 static struct backlight_device *acer_backlight_device;
1432
1433 static int read_brightness(struct backlight_device *bd)
1434 {
1435         u32 value;
1436         get_u32(&value, ACER_CAP_BRIGHTNESS);
1437         return value;
1438 }
1439
1440 static int update_bl_status(struct backlight_device *bd)
1441 {
1442         int intensity = bd->props.brightness;
1443
1444         if (bd->props.power != FB_BLANK_UNBLANK)
1445                 intensity = 0;
1446         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1447                 intensity = 0;
1448
1449         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1450
1451         return 0;
1452 }
1453
1454 static const struct backlight_ops acer_bl_ops = {
1455         .get_brightness = read_brightness,
1456         .update_status = update_bl_status,
1457 };
1458
1459 static int acer_backlight_init(struct device *dev)
1460 {
1461         struct backlight_properties props;
1462         struct backlight_device *bd;
1463
1464         memset(&props, 0, sizeof(struct backlight_properties));
1465         props.type = BACKLIGHT_PLATFORM;
1466         props.max_brightness = max_brightness;
1467         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1468                                        &props);
1469         if (IS_ERR(bd)) {
1470                 pr_err("Could not register Acer backlight device\n");
1471                 acer_backlight_device = NULL;
1472                 return PTR_ERR(bd);
1473         }
1474
1475         acer_backlight_device = bd;
1476
1477         bd->props.power = FB_BLANK_UNBLANK;
1478         bd->props.brightness = read_brightness(bd);
1479         backlight_update_status(bd);
1480         return 0;
1481 }
1482
1483 static void acer_backlight_exit(void)
1484 {
1485         backlight_device_unregister(acer_backlight_device);
1486 }
1487
1488 /*
1489  * Accelerometer device
1490  */
1491 static acpi_handle gsensor_handle;
1492
1493 static int acer_gsensor_init(void)
1494 {
1495         acpi_status status;
1496         struct acpi_buffer output;
1497         union acpi_object out_obj;
1498
1499         output.length = sizeof(out_obj);
1500         output.pointer = &out_obj;
1501         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1502         if (ACPI_FAILURE(status))
1503                 return -1;
1504
1505         return 0;
1506 }
1507
1508 static int acer_gsensor_open(struct input_dev *input)
1509 {
1510         return acer_gsensor_init();
1511 }
1512
1513 static int acer_gsensor_event(void)
1514 {
1515         acpi_status status;
1516         struct acpi_buffer output;
1517         union acpi_object out_obj[5];
1518
1519         if (!has_cap(ACER_CAP_ACCEL))
1520                 return -1;
1521
1522         output.length = sizeof(out_obj);
1523         output.pointer = out_obj;
1524
1525         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1526         if (ACPI_FAILURE(status))
1527                 return -1;
1528
1529         if (out_obj->package.count != 4)
1530                 return -1;
1531
1532         input_report_abs(acer_wmi_accel_dev, ABS_X,
1533                 (s16)out_obj->package.elements[0].integer.value);
1534         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1535                 (s16)out_obj->package.elements[1].integer.value);
1536         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1537                 (s16)out_obj->package.elements[2].integer.value);
1538         input_sync(acer_wmi_accel_dev);
1539         return 0;
1540 }
1541
1542 /*
1543  * Rfkill devices
1544  */
1545 static void acer_rfkill_update(struct work_struct *ignored);
1546 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1547 static void acer_rfkill_update(struct work_struct *ignored)
1548 {
1549         u32 state;
1550         acpi_status status;
1551
1552         if (has_cap(ACER_CAP_WIRELESS)) {
1553                 status = get_u32(&state, ACER_CAP_WIRELESS);
1554                 if (ACPI_SUCCESS(status)) {
1555                         if (quirks->wireless == 3)
1556                                 rfkill_set_hw_state(wireless_rfkill, !state);
1557                         else
1558                                 rfkill_set_sw_state(wireless_rfkill, !state);
1559                 }
1560         }
1561
1562         if (has_cap(ACER_CAP_BLUETOOTH)) {
1563                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1564                 if (ACPI_SUCCESS(status))
1565                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1566         }
1567
1568         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1569                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1570                 if (ACPI_SUCCESS(status))
1571                         rfkill_set_sw_state(threeg_rfkill, !state);
1572         }
1573
1574         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1575 }
1576
1577 static int acer_rfkill_set(void *data, bool blocked)
1578 {
1579         acpi_status status;
1580         u32 cap = (unsigned long)data;
1581
1582         if (rfkill_inited) {
1583                 status = set_u32(!blocked, cap);
1584                 if (ACPI_FAILURE(status))
1585                         return -ENODEV;
1586         }
1587
1588         return 0;
1589 }
1590
1591 static const struct rfkill_ops acer_rfkill_ops = {
1592         .set_block = acer_rfkill_set,
1593 };
1594
1595 static struct rfkill *acer_rfkill_register(struct device *dev,
1596                                            enum rfkill_type type,
1597                                            char *name, u32 cap)
1598 {
1599         int err;
1600         struct rfkill *rfkill_dev;
1601         u32 state;
1602         acpi_status status;
1603
1604         rfkill_dev = rfkill_alloc(name, dev, type,
1605                                   &acer_rfkill_ops,
1606                                   (void *)(unsigned long)cap);
1607         if (!rfkill_dev)
1608                 return ERR_PTR(-ENOMEM);
1609
1610         status = get_u32(&state, cap);
1611
1612         err = rfkill_register(rfkill_dev);
1613         if (err) {
1614                 rfkill_destroy(rfkill_dev);
1615                 return ERR_PTR(err);
1616         }
1617
1618         if (ACPI_SUCCESS(status))
1619                 rfkill_set_sw_state(rfkill_dev, !state);
1620
1621         return rfkill_dev;
1622 }
1623
1624 static int acer_rfkill_init(struct device *dev)
1625 {
1626         int err;
1627
1628         if (has_cap(ACER_CAP_WIRELESS)) {
1629                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1630                         "acer-wireless", ACER_CAP_WIRELESS);
1631                 if (IS_ERR(wireless_rfkill)) {
1632                         err = PTR_ERR(wireless_rfkill);
1633                         goto error_wireless;
1634                 }
1635         }
1636
1637         if (has_cap(ACER_CAP_BLUETOOTH)) {
1638                 bluetooth_rfkill = acer_rfkill_register(dev,
1639                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1640                         ACER_CAP_BLUETOOTH);
1641                 if (IS_ERR(bluetooth_rfkill)) {
1642                         err = PTR_ERR(bluetooth_rfkill);
1643                         goto error_bluetooth;
1644                 }
1645         }
1646
1647         if (has_cap(ACER_CAP_THREEG)) {
1648                 threeg_rfkill = acer_rfkill_register(dev,
1649                         RFKILL_TYPE_WWAN, "acer-threeg",
1650                         ACER_CAP_THREEG);
1651                 if (IS_ERR(threeg_rfkill)) {
1652                         err = PTR_ERR(threeg_rfkill);
1653                         goto error_threeg;
1654                 }
1655         }
1656
1657         rfkill_inited = true;
1658
1659         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1660             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1661                 schedule_delayed_work(&acer_rfkill_work,
1662                         round_jiffies_relative(HZ));
1663
1664         return 0;
1665
1666 error_threeg:
1667         if (has_cap(ACER_CAP_BLUETOOTH)) {
1668                 rfkill_unregister(bluetooth_rfkill);
1669                 rfkill_destroy(bluetooth_rfkill);
1670         }
1671 error_bluetooth:
1672         if (has_cap(ACER_CAP_WIRELESS)) {
1673                 rfkill_unregister(wireless_rfkill);
1674                 rfkill_destroy(wireless_rfkill);
1675         }
1676 error_wireless:
1677         return err;
1678 }
1679
1680 static void acer_rfkill_exit(void)
1681 {
1682         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1683             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1684                 cancel_delayed_work_sync(&acer_rfkill_work);
1685
1686         if (has_cap(ACER_CAP_WIRELESS)) {
1687                 rfkill_unregister(wireless_rfkill);
1688                 rfkill_destroy(wireless_rfkill);
1689         }
1690
1691         if (has_cap(ACER_CAP_BLUETOOTH)) {
1692                 rfkill_unregister(bluetooth_rfkill);
1693                 rfkill_destroy(bluetooth_rfkill);
1694         }
1695
1696         if (has_cap(ACER_CAP_THREEG)) {
1697                 rfkill_unregister(threeg_rfkill);
1698                 rfkill_destroy(threeg_rfkill);
1699         }
1700         return;
1701 }
1702
1703 static void acer_wmi_notify(u32 value, void *context)
1704 {
1705         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1706         union acpi_object *obj;
1707         struct event_return_value return_value;
1708         acpi_status status;
1709         u16 device_state;
1710         const struct key_entry *key;
1711         u32 scancode;
1712
1713         status = wmi_get_event_data(value, &response);
1714         if (status != AE_OK) {
1715                 pr_warn("bad event status 0x%x\n", status);
1716                 return;
1717         }
1718
1719         obj = (union acpi_object *)response.pointer;
1720
1721         if (!obj)
1722                 return;
1723         if (obj->type != ACPI_TYPE_BUFFER) {
1724                 pr_warn("Unknown response received %d\n", obj->type);
1725                 kfree(obj);
1726                 return;
1727         }
1728         if (obj->buffer.length != 8) {
1729                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1730                 kfree(obj);
1731                 return;
1732         }
1733
1734         return_value = *((struct event_return_value *)obj->buffer.pointer);
1735         kfree(obj);
1736
1737         switch (return_value.function) {
1738         case WMID_HOTKEY_EVENT:
1739                 device_state = return_value.device_state;
1740                 pr_debug("device state: 0x%x\n", device_state);
1741
1742                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1743                                                         return_value.key_num);
1744                 if (!key) {
1745                         pr_warn("Unknown key number - 0x%x\n",
1746                                 return_value.key_num);
1747                 } else {
1748                         scancode = return_value.key_num;
1749                         switch (key->keycode) {
1750                         case KEY_WLAN:
1751                         case KEY_BLUETOOTH:
1752                                 if (has_cap(ACER_CAP_WIRELESS))
1753                                         rfkill_set_sw_state(wireless_rfkill,
1754                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1755                                 if (has_cap(ACER_CAP_THREEG))
1756                                         rfkill_set_sw_state(threeg_rfkill,
1757                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1758                                 if (has_cap(ACER_CAP_BLUETOOTH))
1759                                         rfkill_set_sw_state(bluetooth_rfkill,
1760                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1761                                 break;
1762                         case KEY_TOUCHPAD_TOGGLE:
1763                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1764                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1765                         }
1766                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1767                 }
1768                 break;
1769         case WMID_ACCEL_EVENT:
1770                 acer_gsensor_event();
1771                 break;
1772         default:
1773                 pr_warn("Unknown function number - %d - %d\n",
1774                         return_value.function, return_value.key_num);
1775                 break;
1776         }
1777 }
1778
1779 static acpi_status __init
1780 wmid3_set_function_mode(struct func_input_params *params,
1781                         struct func_return_value *return_value)
1782 {
1783         acpi_status status;
1784         union acpi_object *obj;
1785
1786         struct acpi_buffer input = { sizeof(struct func_input_params), params };
1787         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1788
1789         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1790         if (ACPI_FAILURE(status))
1791                 return status;
1792
1793         obj = output.pointer;
1794
1795         if (!obj)
1796                 return AE_ERROR;
1797         else if (obj->type != ACPI_TYPE_BUFFER) {
1798                 kfree(obj);
1799                 return AE_ERROR;
1800         }
1801         if (obj->buffer.length != 4) {
1802                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1803                 kfree(obj);
1804                 return AE_ERROR;
1805         }
1806
1807         *return_value = *((struct func_return_value *)obj->buffer.pointer);
1808         kfree(obj);
1809
1810         return status;
1811 }
1812
1813 static int __init acer_wmi_enable_ec_raw(void)
1814 {
1815         struct func_return_value return_value;
1816         acpi_status status;
1817         struct func_input_params params = {
1818                 .function_num = 0x1,
1819                 .commun_devices = 0xFFFF,
1820                 .devices = 0xFFFF,
1821                 .app_status = 0x00,             /* Launch Manager Deactive */
1822                 .app_mask = 0x01,
1823         };
1824
1825         status = wmid3_set_function_mode(&params, &return_value);
1826
1827         if (return_value.error_code || return_value.ec_return_value)
1828                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1829                         return_value.error_code,
1830                         return_value.ec_return_value);
1831         else
1832                 pr_info("Enabled EC raw mode\n");
1833
1834         return status;
1835 }
1836
1837 static int __init acer_wmi_enable_lm(void)
1838 {
1839         struct func_return_value return_value;
1840         acpi_status status;
1841         struct func_input_params params = {
1842                 .function_num = 0x1,
1843                 .commun_devices = 0xFFFF,
1844                 .devices = 0xFFFF,
1845                 .app_status = 0x01,            /* Launch Manager Active */
1846                 .app_mask = 0x01,
1847         };
1848
1849         status = wmid3_set_function_mode(&params, &return_value);
1850
1851         if (return_value.error_code || return_value.ec_return_value)
1852                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1853                         return_value.error_code,
1854                         return_value.ec_return_value);
1855
1856         return status;
1857 }
1858
1859 static int __init acer_wmi_enable_rf_button(void)
1860 {
1861         struct func_return_value return_value;
1862         acpi_status status;
1863         struct func_input_params params = {
1864                 .function_num = 0x1,
1865                 .commun_devices = 0xFFFF,
1866                 .devices = 0xFFFF,
1867                 .app_status = 0x10,            /* RF Button Active */
1868                 .app_mask = 0x10,
1869         };
1870
1871         status = wmid3_set_function_mode(&params, &return_value);
1872
1873         if (return_value.error_code || return_value.ec_return_value)
1874                 pr_warn("Enabling RF Button failed: 0x%x - 0x%x\n",
1875                         return_value.error_code,
1876                         return_value.ec_return_value);
1877
1878         return status;
1879 }
1880
1881 #define ACER_WMID_ACCEL_HID     "BST0001"
1882
1883 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1884                                                 void *ctx, void **retval)
1885 {
1886         struct acpi_device *dev;
1887
1888         if (!strcmp(ctx, "SENR")) {
1889                 if (acpi_bus_get_device(ah, &dev))
1890                         return AE_OK;
1891                 if (strcmp(ACER_WMID_ACCEL_HID, acpi_device_hid(dev)))
1892                         return AE_OK;
1893         } else
1894                 return AE_OK;
1895
1896         *(acpi_handle *)retval = ah;
1897
1898         return AE_CTRL_TERMINATE;
1899 }
1900
1901 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1902                                         acpi_handle *ah)
1903 {
1904         acpi_status status;
1905         acpi_handle handle;
1906
1907         BUG_ON(!name || !ah);
1908
1909         handle = NULL;
1910         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1911                                         (void *)name, &handle);
1912         if (ACPI_SUCCESS(status) && handle) {
1913                 *ah = handle;
1914                 return 0;
1915         } else {
1916                 return -ENODEV;
1917         }
1918 }
1919
1920 static int __init acer_wmi_accel_setup(void)
1921 {
1922         int err;
1923
1924         err = acer_wmi_get_handle("SENR", ACER_WMID_ACCEL_HID, &gsensor_handle);
1925         if (err)
1926                 return err;
1927
1928         interface->capability |= ACER_CAP_ACCEL;
1929
1930         acer_wmi_accel_dev = input_allocate_device();
1931         if (!acer_wmi_accel_dev)
1932                 return -ENOMEM;
1933
1934         acer_wmi_accel_dev->open = acer_gsensor_open;
1935
1936         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1937         acer_wmi_accel_dev->phys = "wmi/input1";
1938         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1939         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1940         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1941         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1942         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1943
1944         err = input_register_device(acer_wmi_accel_dev);
1945         if (err)
1946                 goto err_free_dev;
1947
1948         return 0;
1949
1950 err_free_dev:
1951         input_free_device(acer_wmi_accel_dev);
1952         return err;
1953 }
1954
1955 static void acer_wmi_accel_destroy(void)
1956 {
1957         input_unregister_device(acer_wmi_accel_dev);
1958 }
1959
1960 static int __init acer_wmi_input_setup(void)
1961 {
1962         acpi_status status;
1963         int err;
1964
1965         acer_wmi_input_dev = input_allocate_device();
1966         if (!acer_wmi_input_dev)
1967                 return -ENOMEM;
1968
1969         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1970         acer_wmi_input_dev->phys = "wmi/input0";
1971         acer_wmi_input_dev->id.bustype = BUS_HOST;
1972
1973         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1974         if (err)
1975                 goto err_free_dev;
1976
1977         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1978                                                 acer_wmi_notify, NULL);
1979         if (ACPI_FAILURE(status)) {
1980                 err = -EIO;
1981                 goto err_free_dev;
1982         }
1983
1984         err = input_register_device(acer_wmi_input_dev);
1985         if (err)
1986                 goto err_uninstall_notifier;
1987
1988         return 0;
1989
1990 err_uninstall_notifier:
1991         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1992 err_free_dev:
1993         input_free_device(acer_wmi_input_dev);
1994         return err;
1995 }
1996
1997 static void acer_wmi_input_destroy(void)
1998 {
1999         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
2000         input_unregister_device(acer_wmi_input_dev);
2001 }
2002
2003 /*
2004  * debugfs functions
2005  */
2006 static u32 get_wmid_devices(void)
2007 {
2008         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
2009         union acpi_object *obj;
2010         acpi_status status;
2011         u32 devices = 0;
2012
2013         status = wmi_query_block(WMID_GUID2, 0, &out);
2014         if (ACPI_FAILURE(status))
2015                 return 0;
2016
2017         obj = (union acpi_object *) out.pointer;
2018         if (obj) {
2019                 if (obj->type == ACPI_TYPE_BUFFER &&
2020                         (obj->buffer.length == sizeof(u32) ||
2021                         obj->buffer.length == sizeof(u64))) {
2022                         devices = *((u32 *) obj->buffer.pointer);
2023                 } else if (obj->type == ACPI_TYPE_INTEGER) {
2024                         devices = (u32) obj->integer.value;
2025                 }
2026         }
2027
2028         kfree(out.pointer);
2029         return devices;
2030 }
2031
2032 /*
2033  * Platform device
2034  */
2035 static int acer_platform_probe(struct platform_device *device)
2036 {
2037         int err;
2038
2039         if (has_cap(ACER_CAP_MAILLED)) {
2040                 err = acer_led_init(&device->dev);
2041                 if (err)
2042                         goto error_mailled;
2043         }
2044
2045         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2046                 err = acer_backlight_init(&device->dev);
2047                 if (err)
2048                         goto error_brightness;
2049         }
2050
2051         err = acer_rfkill_init(&device->dev);
2052         if (err)
2053                 goto error_rfkill;
2054
2055         return err;
2056
2057 error_rfkill:
2058         if (has_cap(ACER_CAP_BRIGHTNESS))
2059                 acer_backlight_exit();
2060 error_brightness:
2061         if (has_cap(ACER_CAP_MAILLED))
2062                 acer_led_exit();
2063 error_mailled:
2064         return err;
2065 }
2066
2067 static int acer_platform_remove(struct platform_device *device)
2068 {
2069         if (has_cap(ACER_CAP_MAILLED))
2070                 acer_led_exit();
2071         if (has_cap(ACER_CAP_BRIGHTNESS))
2072                 acer_backlight_exit();
2073
2074         acer_rfkill_exit();
2075         return 0;
2076 }
2077
2078 #ifdef CONFIG_PM_SLEEP
2079 static int acer_suspend(struct device *dev)
2080 {
2081         u32 value;
2082         struct acer_data *data = &interface->data;
2083
2084         if (!data)
2085                 return -ENOMEM;
2086
2087         if (has_cap(ACER_CAP_MAILLED)) {
2088                 get_u32(&value, ACER_CAP_MAILLED);
2089                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2090                 data->mailled = value;
2091         }
2092
2093         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2094                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2095                 data->brightness = value;
2096         }
2097
2098         return 0;
2099 }
2100
2101 static int acer_resume(struct device *dev)
2102 {
2103         struct acer_data *data = &interface->data;
2104
2105         if (!data)
2106                 return -ENOMEM;
2107
2108         if (has_cap(ACER_CAP_MAILLED))
2109                 set_u32(data->mailled, ACER_CAP_MAILLED);
2110
2111         if (has_cap(ACER_CAP_BRIGHTNESS))
2112                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2113
2114         if (has_cap(ACER_CAP_ACCEL))
2115                 acer_gsensor_init();
2116
2117         return 0;
2118 }
2119 #else
2120 #define acer_suspend    NULL
2121 #define acer_resume     NULL
2122 #endif
2123
2124 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2125
2126 static void acer_platform_shutdown(struct platform_device *device)
2127 {
2128         struct acer_data *data = &interface->data;
2129
2130         if (!data)
2131                 return;
2132
2133         if (has_cap(ACER_CAP_MAILLED))
2134                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2135 }
2136
2137 static struct platform_driver acer_platform_driver = {
2138         .driver = {
2139                 .name = "acer-wmi",
2140                 .pm = &acer_pm,
2141         },
2142         .probe = acer_platform_probe,
2143         .remove = acer_platform_remove,
2144         .shutdown = acer_platform_shutdown,
2145 };
2146
2147 static struct platform_device *acer_platform_device;
2148
2149 static void remove_debugfs(void)
2150 {
2151         debugfs_remove(interface->debug.devices);
2152         debugfs_remove(interface->debug.root);
2153 }
2154
2155 static int __init create_debugfs(void)
2156 {
2157         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2158         if (!interface->debug.root) {
2159                 pr_err("Failed to create debugfs directory");
2160                 return -ENOMEM;
2161         }
2162
2163         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2164                                         interface->debug.root,
2165                                         &interface->debug.wmid_devices);
2166         if (!interface->debug.devices)
2167                 goto error_debugfs;
2168
2169         return 0;
2170
2171 error_debugfs:
2172         remove_debugfs();
2173         return -ENOMEM;
2174 }
2175
2176 static int __init acer_wmi_init(void)
2177 {
2178         int err;
2179
2180         pr_info("Acer Laptop ACPI-WMI Extras\n");
2181
2182         if (dmi_check_system(acer_blacklist)) {
2183                 pr_info("Blacklisted hardware detected - not loading\n");
2184                 return -ENODEV;
2185         }
2186
2187         find_quirks();
2188
2189         /*
2190          * The AMW0_GUID1 wmi is not only found on Acer family but also other
2191          * machines like Lenovo, Fujitsu and Medion. In the past days,
2192          * acer-wmi driver handled those non-Acer machines by quirks list.
2193          * But actually acer-wmi driver was loaded on any machines that have
2194          * AMW0_GUID1. This behavior is strange because those machines should
2195          * be supported by appropriate wmi drivers. e.g. fujitsu-laptop,
2196          * ideapad-laptop. So, here checks the machine that has AMW0_GUID1
2197          * should be in Acer/Gateway/Packard Bell white list, or it's already
2198          * in the past quirk list.
2199          */
2200         if (wmi_has_guid(AMW0_GUID1) &&
2201             !dmi_check_system(amw0_whitelist) &&
2202             quirks == &quirk_unknown) {
2203                 pr_debug("Unsupported machine has AMW0_GUID1, unable to load\n");
2204                 return -ENODEV;
2205         }
2206
2207         /*
2208          * Detect which ACPI-WMI interface we're using.
2209          */
2210         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2211                 interface = &AMW0_V2_interface;
2212
2213         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2214                 interface = &wmid_interface;
2215
2216         if (wmi_has_guid(WMID_GUID3))
2217                 interface = &wmid_v2_interface;
2218
2219         if (interface)
2220                 dmi_walk(type_aa_dmi_decode, NULL);
2221
2222         if (wmi_has_guid(WMID_GUID2) && interface) {
2223                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2224                         pr_err("Unable to detect available WMID devices\n");
2225                         return -ENODEV;
2226                 }
2227                 /* WMID always provides brightness methods */
2228                 interface->capability |= ACER_CAP_BRIGHTNESS;
2229         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2230                 pr_err("No WMID device detection method found\n");
2231                 return -ENODEV;
2232         }
2233
2234         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2235                 interface = &AMW0_interface;
2236
2237                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2238                         pr_err("Unable to detect available AMW0 devices\n");
2239                         return -ENODEV;
2240                 }
2241         }
2242
2243         if (wmi_has_guid(AMW0_GUID1))
2244                 AMW0_find_mailled();
2245
2246         if (!interface) {
2247                 pr_err("No or unsupported WMI interface, unable to load\n");
2248                 return -ENODEV;
2249         }
2250
2251         set_quirks();
2252
2253         if (dmi_check_system(video_vendor_dmi_table))
2254                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2255
2256         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2257                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2258
2259         if (wmi_has_guid(WMID_GUID3)) {
2260                 if (ACPI_FAILURE(acer_wmi_enable_rf_button()))
2261                         pr_warn("Cannot enable RF Button Driver\n");
2262
2263                 if (ec_raw_mode) {
2264                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2265                                 pr_err("Cannot enable EC raw mode\n");
2266                                 return -ENODEV;
2267                         }
2268                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2269                         pr_err("Cannot enable Launch Manager mode\n");
2270                         return -ENODEV;
2271                 }
2272         } else if (ec_raw_mode) {
2273                 pr_info("No WMID EC raw mode enable method\n");
2274         }
2275
2276         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2277                 err = acer_wmi_input_setup();
2278                 if (err)
2279                         return err;
2280                 err = acer_wmi_accel_setup();
2281                 if (err && err != -ENODEV)
2282                         pr_warn("Cannot enable accelerometer\n");
2283         }
2284
2285         err = platform_driver_register(&acer_platform_driver);
2286         if (err) {
2287                 pr_err("Unable to register platform driver\n");
2288                 goto error_platform_register;
2289         }
2290
2291         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2292         if (!acer_platform_device) {
2293                 err = -ENOMEM;
2294                 goto error_device_alloc;
2295         }
2296
2297         err = platform_device_add(acer_platform_device);
2298         if (err)
2299                 goto error_device_add;
2300
2301         if (wmi_has_guid(WMID_GUID2)) {
2302                 interface->debug.wmid_devices = get_wmid_devices();
2303                 err = create_debugfs();
2304                 if (err)
2305                         goto error_create_debugfs;
2306         }
2307
2308         /* Override any initial settings with values from the commandline */
2309         acer_commandline_init();
2310
2311         return 0;
2312
2313 error_create_debugfs:
2314         platform_device_del(acer_platform_device);
2315 error_device_add:
2316         platform_device_put(acer_platform_device);
2317 error_device_alloc:
2318         platform_driver_unregister(&acer_platform_driver);
2319 error_platform_register:
2320         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2321                 acer_wmi_input_destroy();
2322         if (has_cap(ACER_CAP_ACCEL))
2323                 acer_wmi_accel_destroy();
2324
2325         return err;
2326 }
2327
2328 static void __exit acer_wmi_exit(void)
2329 {
2330         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2331                 acer_wmi_input_destroy();
2332
2333         if (has_cap(ACER_CAP_ACCEL))
2334                 acer_wmi_accel_destroy();
2335
2336         remove_debugfs();
2337         platform_device_unregister(acer_platform_device);
2338         platform_driver_unregister(&acer_platform_driver);
2339
2340         pr_info("Acer Laptop WMI Extras unloaded\n");
2341         return;
2342 }
2343
2344 module_init(acer_wmi_init);
2345 module_exit(acer_wmi_exit);