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