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