drivers/platform/x86/acer-wmi.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Acer WMI Laptop Extras
   4  *
   5  *  Copyright (C) 2007-2009     Carlos Corbacho <carlos@strangeworlds.co.uk>
   6  *
   7  *  Based on acer_acpi:
   8  *    Copyright (C) 2005-2007   E.M. Smith
   9  *    Copyright (C) 2007-2008   Carlos Corbacho <cathectic@gmail.com>
  10  */
  11
  12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  13
  14 #include <linux/kernel.h>
  15 #include <linux/module.h>
  16 #include <linux/init.h>
  17 #include <linux/types.h>
  18 #include <linux/dmi.h>
  19 #include <linux/fb.h>
  20 #include <linux/backlight.h>
  21 #include <linux/leds.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/acpi.h>
  24 #include <linux/i8042.h>
  25 #include <linux/rfkill.h>
  26 #include <linux/workqueue.h>
  27 #include <linux/debugfs.h>
  28 #include <linux/slab.h>
  29 #include <linux/input.h>
  30 #include <linux/input/sparse-keymap.h>
  31 #include <acpi/video.h>
  32
  33 MODULE_AUTHOR("Carlos Corbacho");
  34 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
  35 MODULE_LICENSE("GPL");
  36
  37 /*
  38  * Magic Number
  39  * Meaning is unknown - this number is required for writing to ACPI for AMW0
  40  * (it's also used in acerhk when directly accessing the BIOS)
  41  */
  42 #define ACER_AMW0_WRITE 0x9610
  43
  44 /*
  45  * Bit masks for the AMW0 interface
  46  */
  47 #define ACER_AMW0_WIRELESS_MASK  0x35
  48 #define ACER_AMW0_BLUETOOTH_MASK 0x34
  49 #define ACER_AMW0_MAILLED_MASK   0x31
  50
  51 /*
  52  * Method IDs for WMID interface
  53  */
  54 #define ACER_WMID_GET_WIRELESS_METHODID         1
  55 #define ACER_WMID_GET_BLUETOOTH_METHODID        2
  56 #define ACER_WMID_GET_BRIGHTNESS_METHODID       3
  57 #define ACER_WMID_SET_WIRELESS_METHODID         4
  58 #define ACER_WMID_SET_BLUETOOTH_METHODID        5
  59 #define ACER_WMID_SET_BRIGHTNESS_METHODID       6
  60 #define ACER_WMID_GET_THREEG_METHODID           10
  61 #define ACER_WMID_SET_THREEG_METHODID           11
  62
  63 /*
  64  * Acer ACPI method GUIDs
  65  */
  66 #define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
  67 #define AMW0_GUID2              "431F16ED-0C2B-444C-B267-27DEB140CF9C"
  68 #define WMID_GUID1              "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
  69 #define WMID_GUID2              "95764E09-FB56-4E83-B31A-37761F60994A"
  70 #define WMID_GUID3              "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
  71
  72 /*
  73  * Acer ACPI event GUIDs
  74  */
  75 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
  76
  77 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
  78 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
  79 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
  80
  81 enum acer_wmi_event_ids {
  82         WMID_HOTKEY_EVENT = 0x1,
  83         WMID_ACCEL_EVENT = 0x5,
  84 };
  85
  86 static const struct key_entry acer_wmi_keymap[] __initconst = {
  87         {KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
  88         {KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
  89         {KE_KEY, 0x04, {KEY_WLAN} },     /* WiFi */
  90         {KE_KEY, 0x12, {KEY_BLUETOOTH} },       /* BT */
  91         {KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
  92         {KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
  93         {KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
  94         {KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
  95         {KE_KEY, 0x29, {KEY_PROG3} },    /* P_Key for TM8372 */
  96         {KE_IGNORE, 0x41, {KEY_MUTE} },
  97         {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
  98         {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
  99         {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
 100         {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
 101         {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
 102         {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
 103         {KE_IGNORE, 0x45, {KEY_STOP} },
 104         {KE_IGNORE, 0x50, {KEY_STOP} },
 105         {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
 106         {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
 107         {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
 108         {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
 109         {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 110         {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 111         {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
 112         {KE_IGNORE, 0x81, {KEY_SLEEP} },
 113         {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
 114         {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
 115         {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
 116         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 117         {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
 118         {KE_KEY, 0x86, {KEY_WLAN} },
 119         {KE_KEY, 0x87, {KEY_POWER} },
 120         {KE_END, 0}
 121 };
 122
 123 static struct input_dev *acer_wmi_input_dev;
 124 static struct input_dev *acer_wmi_accel_dev;
 125
 126 struct event_return_value {
 127         u8 function;
 128         u8 key_num;
 129         u16 device_state;
 130         u32 reserved;
 131 } __attribute__((packed));
 132
 133 /*
 134  * GUID3 Get Device Status device flags
 135  */
 136 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 137 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 138 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 139 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 140 #define ACER_WMID3_GDS_RFBTN            (1<<14) /* RF Button */
 141
 142 #define ACER_WMID3_GDS_TOUCHPAD         (1<<1)  /* Touchpad */
 143
 144 /* Hotkey Customized Setting and Acer Application Status.
 145  * Set Device Default Value and Report Acer Application Status.
 146  * When Acer Application starts, it will run this method to inform
 147  * BIOS/EC that Acer Application is on.
 148  * App Status
 149  *      Bit[0]: Launch Manager Status
 150  *      Bit[1]: ePM Status
 151  *      Bit[2]: Device Control Status
 152  *      Bit[3]: Acer Power Button Utility Status
 153  *      Bit[4]: RF Button Status
 154  *      Bit[5]: ODD PM Status
 155  *      Bit[6]: Device Default Value Control
 156  *      Bit[7]: Hall Sensor Application Status
 157  */
 158 struct func_input_params {
 159         u8 function_num;        /* Function Number */
 160         u16 commun_devices;     /* Communication type devices default status */
 161         u16 devices;            /* Other type devices default status */
 162         u8 app_status;          /* Acer Device Status. LM, ePM, RF Button... */
 163         u8 app_mask;            /* Bit mask to app_status */
 164         u8 reserved;
 165 } __attribute__((packed));
 166
 167 struct func_return_value {
 168         u8 error_code;          /* Error Code */
 169         u8 ec_return_value;     /* EC Return Value */
 170         u16 reserved;
 171 } __attribute__((packed));
 172
 173 struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 174         u8 function_num;        /* Function Number */
 175         u8 hotkey_number;       /* Hotkey Number */
 176         u16 devices;            /* Set Device */
 177         u8 volume_value;        /* Volume Value */
 178 } __attribute__((packed));
 179
 180 struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 181         u8 function_num;        /* Function Number */
 182         u8 hotkey_number;       /* Hotkey Number */
 183         u16 devices;            /* Get Device */
 184 } __attribute__((packed));
 185
 186 struct wmid3_gds_return_value { /* Get Device Status return value*/
 187         u8 error_code;          /* Error Code */
 188         u8 ec_return_value;     /* EC Return Value */
 189         u16 devices;            /* Current Device Status */
 190         u32 reserved;
 191 } __attribute__((packed));
 192
 193 struct hotkey_function_type_aa {
 194         u8 type;
 195         u8 length;
 196         u16 handle;
 197         u16 commun_func_bitmap;
 198         u16 application_func_bitmap;
 199         u16 media_func_bitmap;
 200         u16 display_func_bitmap;
 201         u16 others_func_bitmap;
 202         u8 commun_fn_key_number;
 203 } __attribute__((packed));
 204
 205 /*
 206  * Interface capability flags
 207  */
 208 #define ACER_CAP_MAILLED                (1<<0)
 209 #define ACER_CAP_WIRELESS               (1<<1)
 210 #define ACER_CAP_BLUETOOTH              (1<<2)
 211 #define ACER_CAP_BRIGHTNESS             (1<<3)
 212 #define ACER_CAP_THREEG                 (1<<4)
 213 #define ACER_CAP_ACCEL                  (1<<5)
 214 #define ACER_CAP_RFBTN                  (1<<6)
 215 #define ACER_CAP_ANY                    (0xFFFFFFFF)
 216
 217 /*
 218  * Interface type flags
 219  */
 220 enum interface_flags {
 221         ACER_AMW0,
 222         ACER_AMW0_V2,
 223         ACER_WMID,
 224         ACER_WMID_v2,
 225 };
 226
 227 #define ACER_DEFAULT_WIRELESS  0
 228 #define ACER_DEFAULT_BLUETOOTH 0
 229 #define ACER_DEFAULT_MAILLED   0
 230 #define ACER_DEFAULT_THREEG    0
 231
 232 static int max_brightness = 0xF;
 233
 234 static int mailled = -1;
 235 static int brightness = -1;
 236 static int threeg = -1;
 237 static int force_series;
 238 static bool ec_raw_mode;
 239 static bool has_type_aa;
 240 static u16 commun_func_bitmap;
 241 static u8 commun_fn_key_number;
 242
 243 module_param(mailled, int, 0444);
 244 module_param(brightness, int, 0444);
 245 module_param(threeg, int, 0444);
 246 module_param(force_series, int, 0444);
 247 module_param(ec_raw_mode, bool, 0444);
 248 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 249 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 250 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 251 MODULE_PARM_DESC(force_series, "Force a different laptop series");
 252 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 253
 254 struct acer_data {
 255         int mailled;
 256         int threeg;
 257         int brightness;
 258 };
 259
 260 struct acer_debug {
 261         struct dentry *root;
 262         u32 wmid_devices;
 263 };
 264
 265 static struct rfkill *wireless_rfkill;
 266 static struct rfkill *bluetooth_rfkill;
 267 static struct rfkill *threeg_rfkill;
 268 static bool rfkill_inited;
 269
 270 /* Each low-level interface must define at least some of the following */
 271 struct wmi_interface {
 272         /* The WMI device type */
 273         u32 type;
 274
 275         /* The capabilities this interface provides */
 276         u32 capability;
 277
 278         /* Private data for the current interface */
 279         struct acer_data data;
 280
 281         /* debugfs entries associated with this interface */
 282         struct acer_debug debug;
 283 };
 284
 285 /* The static interface pointer, points to the currently detected interface */
 286 static struct wmi_interface *interface;
 287
 288 /*
 289  * Embedded Controller quirks
 290  * Some laptops require us to directly access the EC to either enable or query
 291  * features that are not available through WMI.
 292  */
 293
 294 struct quirk_entry {
 295         u8 wireless;
 296         u8 mailled;
 297         s8 brightness;
 298         u8 bluetooth;
 299 };
 300
 301 static struct quirk_entry *quirks;
 302
 303 static void __init set_quirks(void)
 304 {
 305         if (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                 interface->capability |= ACER_CAP_RFBTN;
1251                 commun_func_bitmap &= ~ACER_WMID3_GDS_RFBTN;
1252         }
1253
1254         commun_fn_key_number = type_aa->commun_fn_key_number;
1255 }
1256
1257 static acpi_status __init WMID_set_capabilities(void)
1258 {
1259         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1260         union acpi_object *obj;
1261         acpi_status status;
1262         u32 devices;
1263
1264         status = wmi_query_block(WMID_GUID2, 0, &out);
1265         if (ACPI_FAILURE(status))
1266                 return status;
1267
1268         obj = (union acpi_object *) out.pointer;
1269         if (obj) {
1270                 if (obj->type == ACPI_TYPE_BUFFER &&
1271                         (obj->buffer.length == sizeof(u32) ||
1272                         obj->buffer.length == sizeof(u64))) {
1273                         devices = *((u32 *) obj->buffer.pointer);
1274                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1275                         devices = (u32) obj->integer.value;
1276                 } else {
1277                         kfree(out.pointer);
1278                         return AE_ERROR;
1279                 }
1280         } else {
1281                 kfree(out.pointer);
1282                 return AE_ERROR;
1283         }
1284
1285         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1286         if (devices & 0x07)
1287                 interface->capability |= ACER_CAP_WIRELESS;
1288         if (devices & 0x40)
1289                 interface->capability |= ACER_CAP_THREEG;
1290         if (devices & 0x10)
1291                 interface->capability |= ACER_CAP_BLUETOOTH;
1292
1293         if (!(devices & 0x20))
1294                 max_brightness = 0x9;
1295
1296         kfree(out.pointer);
1297         return status;
1298 }
1299
1300 static struct wmi_interface wmid_interface = {
1301         .type = ACER_WMID,
1302 };
1303
1304 static struct wmi_interface wmid_v2_interface = {
1305         .type = ACER_WMID_v2,
1306 };
1307
1308 /*
1309  * Generic Device (interface-independent)
1310  */
1311
1312 static acpi_status get_u32(u32 *value, u32 cap)
1313 {
1314         acpi_status status = AE_ERROR;
1315
1316         switch (interface->type) {
1317         case ACER_AMW0:
1318                 status = AMW0_get_u32(value, cap);
1319                 break;
1320         case ACER_AMW0_V2:
1321                 if (cap == ACER_CAP_MAILLED) {
1322                         status = AMW0_get_u32(value, cap);
1323                         break;
1324                 }
1325                 fallthrough;
1326         case ACER_WMID:
1327                 status = WMID_get_u32(value, cap);
1328                 break;
1329         case ACER_WMID_v2:
1330                 if (cap & (ACER_CAP_WIRELESS |
1331                            ACER_CAP_BLUETOOTH |
1332                            ACER_CAP_THREEG))
1333                         status = wmid_v2_get_u32(value, cap);
1334                 else if (wmi_has_guid(WMID_GUID2))
1335                         status = WMID_get_u32(value, cap);
1336                 break;
1337         }
1338
1339         return status;
1340 }
1341
1342 static acpi_status set_u32(u32 value, u32 cap)
1343 {
1344         acpi_status status;
1345
1346         if (interface->capability & cap) {
1347                 switch (interface->type) {
1348                 case ACER_AMW0:
1349                         return AMW0_set_u32(value, cap);
1350                 case ACER_AMW0_V2:
1351                         if (cap == ACER_CAP_MAILLED)
1352                                 return AMW0_set_u32(value, cap);
1353
1354                         /*
1355                          * On some models, some WMID methods don't toggle
1356                          * properly. For those cases, we want to run the AMW0
1357                          * method afterwards to be certain we've really toggled
1358                          * the device state.
1359                          */
1360                         if (cap == ACER_CAP_WIRELESS ||
1361                                 cap == ACER_CAP_BLUETOOTH) {
1362                                 status = WMID_set_u32(value, cap);
1363                                 if (ACPI_FAILURE(status))
1364                                         return status;
1365
1366                                 return AMW0_set_u32(value, cap);
1367                         }
1368                         fallthrough;
1369                 case ACER_WMID:
1370                         return WMID_set_u32(value, cap);
1371                 case ACER_WMID_v2:
1372                         if (cap & (ACER_CAP_WIRELESS |
1373                                    ACER_CAP_BLUETOOTH |
1374                                    ACER_CAP_THREEG))
1375                                 return wmid_v2_set_u32(value, cap);
1376                         else if (wmi_has_guid(WMID_GUID2))
1377                                 return WMID_set_u32(value, cap);
1378                         fallthrough;
1379                 default:
1380                         return AE_BAD_PARAMETER;
1381                 }
1382         }
1383         return AE_BAD_PARAMETER;
1384 }
1385
1386 static void __init acer_commandline_init(void)
1387 {
1388         /*
1389          * These will all fail silently if the value given is invalid, or the
1390          * capability isn't available on the given interface
1391          */
1392         if (mailled >= 0)
1393                 set_u32(mailled, ACER_CAP_MAILLED);
1394         if (!has_type_aa && threeg >= 0)
1395                 set_u32(threeg, ACER_CAP_THREEG);
1396         if (brightness >= 0)
1397                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1398 }
1399
1400 /*
1401  * LED device (Mail LED only, no other LEDs known yet)
1402  */
1403 static void mail_led_set(struct led_classdev *led_cdev,
1404 enum led_brightness value)
1405 {
1406         set_u32(value, ACER_CAP_MAILLED);
1407 }
1408
1409 static struct led_classdev mail_led = {
1410         .name = "acer-wmi::mail",
1411         .brightness_set = mail_led_set,
1412 };
1413
1414 static int acer_led_init(struct device *dev)
1415 {
1416         return led_classdev_register(dev, &mail_led);
1417 }
1418
1419 static void acer_led_exit(void)
1420 {
1421         set_u32(LED_OFF, ACER_CAP_MAILLED);
1422         led_classdev_unregister(&mail_led);
1423 }
1424
1425 /*
1426  * Backlight device
1427  */
1428 static struct backlight_device *acer_backlight_device;
1429
1430 static int read_brightness(struct backlight_device *bd)
1431 {
1432         u32 value;
1433         get_u32(&value, ACER_CAP_BRIGHTNESS);
1434         return value;
1435 }
1436
1437 static int update_bl_status(struct backlight_device *bd)
1438 {
1439         int intensity = bd->props.brightness;
1440
1441         if (bd->props.power != FB_BLANK_UNBLANK)
1442                 intensity = 0;
1443         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1444                 intensity = 0;
1445
1446         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1447
1448         return 0;
1449 }
1450
1451 static const struct backlight_ops acer_bl_ops = {
1452         .get_brightness = read_brightness,
1453         .update_status = update_bl_status,
1454 };
1455
1456 static int acer_backlight_init(struct device *dev)
1457 {
1458         struct backlight_properties props;
1459         struct backlight_device *bd;
1460
1461         memset(&props, 0, sizeof(struct backlight_properties));
1462         props.type = BACKLIGHT_PLATFORM;
1463         props.max_brightness = max_brightness;
1464         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1465                                        &props);
1466         if (IS_ERR(bd)) {
1467                 pr_err("Could not register Acer backlight device\n");
1468                 acer_backlight_device = NULL;
1469                 return PTR_ERR(bd);
1470         }
1471
1472         acer_backlight_device = bd;
1473
1474         bd->props.power = FB_BLANK_UNBLANK;
1475         bd->props.brightness = read_brightness(bd);
1476         backlight_update_status(bd);
1477         return 0;
1478 }
1479
1480 static void acer_backlight_exit(void)
1481 {
1482         backlight_device_unregister(acer_backlight_device);
1483 }
1484
1485 /*
1486  * Accelerometer device
1487  */
1488 static acpi_handle gsensor_handle;
1489
1490 static int acer_gsensor_init(void)
1491 {
1492         acpi_status status;
1493         struct acpi_buffer output;
1494         union acpi_object out_obj;
1495
1496         output.length = sizeof(out_obj);
1497         output.pointer = &out_obj;
1498         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1499         if (ACPI_FAILURE(status))
1500                 return -1;
1501
1502         return 0;
1503 }
1504
1505 static int acer_gsensor_open(struct input_dev *input)
1506 {
1507         return acer_gsensor_init();
1508 }
1509
1510 static int acer_gsensor_event(void)
1511 {
1512         acpi_status status;
1513         struct acpi_buffer output;
1514         union acpi_object out_obj[5];
1515
1516         if (!has_cap(ACER_CAP_ACCEL))
1517                 return -1;
1518
1519         output.length = sizeof(out_obj);
1520         output.pointer = out_obj;
1521
1522         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1523         if (ACPI_FAILURE(status))
1524                 return -1;
1525
1526         if (out_obj->package.count != 4)
1527                 return -1;
1528
1529         input_report_abs(acer_wmi_accel_dev, ABS_X,
1530                 (s16)out_obj->package.elements[0].integer.value);
1531         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1532                 (s16)out_obj->package.elements[1].integer.value);
1533         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1534                 (s16)out_obj->package.elements[2].integer.value);
1535         input_sync(acer_wmi_accel_dev);
1536         return 0;
1537 }
1538
1539 /*
1540  * Rfkill devices
1541  */
1542 static void acer_rfkill_update(struct work_struct *ignored);
1543 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1544 static void acer_rfkill_update(struct work_struct *ignored)
1545 {
1546         u32 state;
1547         acpi_status status;
1548
1549         if (has_cap(ACER_CAP_WIRELESS)) {
1550                 status = get_u32(&state, ACER_CAP_WIRELESS);
1551                 if (ACPI_SUCCESS(status)) {
1552                         if (quirks->wireless == 3)
1553                                 rfkill_set_hw_state(wireless_rfkill, !state);
1554                         else
1555                                 rfkill_set_sw_state(wireless_rfkill, !state);
1556                 }
1557         }
1558
1559         if (has_cap(ACER_CAP_BLUETOOTH)) {
1560                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1561                 if (ACPI_SUCCESS(status))
1562                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1563         }
1564
1565         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1566                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1567                 if (ACPI_SUCCESS(status))
1568                         rfkill_set_sw_state(threeg_rfkill, !state);
1569         }
1570
1571         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1572 }
1573
1574 static int acer_rfkill_set(void *data, bool blocked)
1575 {
1576         acpi_status status;
1577         u32 cap = (unsigned long)data;
1578
1579         if (rfkill_inited) {
1580                 status = set_u32(!blocked, cap);
1581                 if (ACPI_FAILURE(status))
1582                         return -ENODEV;
1583         }
1584
1585         return 0;
1586 }
1587
1588 static const struct rfkill_ops acer_rfkill_ops = {
1589         .set_block = acer_rfkill_set,
1590 };
1591
1592 static struct rfkill *acer_rfkill_register(struct device *dev,
1593                                            enum rfkill_type type,
1594                                            char *name, u32 cap)
1595 {
1596         int err;
1597         struct rfkill *rfkill_dev;
1598         u32 state;
1599         acpi_status status;
1600
1601         rfkill_dev = rfkill_alloc(name, dev, type,
1602                                   &acer_rfkill_ops,
1603                                   (void *)(unsigned long)cap);
1604         if (!rfkill_dev)
1605                 return ERR_PTR(-ENOMEM);
1606
1607         status = get_u32(&state, cap);
1608
1609         err = rfkill_register(rfkill_dev);
1610         if (err) {
1611                 rfkill_destroy(rfkill_dev);
1612                 return ERR_PTR(err);
1613         }
1614
1615         if (ACPI_SUCCESS(status))
1616                 rfkill_set_sw_state(rfkill_dev, !state);
1617
1618         return rfkill_dev;
1619 }
1620
1621 static int acer_rfkill_init(struct device *dev)
1622 {
1623         int err;
1624
1625         if (has_cap(ACER_CAP_WIRELESS)) {
1626                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1627                         "acer-wireless", ACER_CAP_WIRELESS);
1628                 if (IS_ERR(wireless_rfkill)) {
1629                         err = PTR_ERR(wireless_rfkill);
1630                         goto error_wireless;
1631                 }
1632         }
1633
1634         if (has_cap(ACER_CAP_BLUETOOTH)) {
1635                 bluetooth_rfkill = acer_rfkill_register(dev,
1636                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1637                         ACER_CAP_BLUETOOTH);
1638                 if (IS_ERR(bluetooth_rfkill)) {
1639                         err = PTR_ERR(bluetooth_rfkill);
1640                         goto error_bluetooth;
1641                 }
1642         }
1643
1644         if (has_cap(ACER_CAP_THREEG)) {
1645                 threeg_rfkill = acer_rfkill_register(dev,
1646                         RFKILL_TYPE_WWAN, "acer-threeg",
1647                         ACER_CAP_THREEG);
1648                 if (IS_ERR(threeg_rfkill)) {
1649                         err = PTR_ERR(threeg_rfkill);
1650                         goto error_threeg;
1651                 }
1652         }
1653
1654         rfkill_inited = true;
1655
1656         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1657             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1658                 schedule_delayed_work(&acer_rfkill_work,
1659                         round_jiffies_relative(HZ));
1660
1661         return 0;
1662
1663 error_threeg:
1664         if (has_cap(ACER_CAP_BLUETOOTH)) {
1665                 rfkill_unregister(bluetooth_rfkill);
1666                 rfkill_destroy(bluetooth_rfkill);
1667         }
1668 error_bluetooth:
1669         if (has_cap(ACER_CAP_WIRELESS)) {
1670                 rfkill_unregister(wireless_rfkill);
1671                 rfkill_destroy(wireless_rfkill);
1672         }
1673 error_wireless:
1674         return err;
1675 }
1676
1677 static void acer_rfkill_exit(void)
1678 {
1679         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1680             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1681                 cancel_delayed_work_sync(&acer_rfkill_work);
1682
1683         if (has_cap(ACER_CAP_WIRELESS)) {
1684                 rfkill_unregister(wireless_rfkill);
1685                 rfkill_destroy(wireless_rfkill);
1686         }
1687
1688         if (has_cap(ACER_CAP_BLUETOOTH)) {
1689                 rfkill_unregister(bluetooth_rfkill);
1690                 rfkill_destroy(bluetooth_rfkill);
1691         }
1692
1693         if (has_cap(ACER_CAP_THREEG)) {
1694                 rfkill_unregister(threeg_rfkill);
1695                 rfkill_destroy(threeg_rfkill);
1696         }
1697         return;
1698 }
1699
1700 static void acer_wmi_notify(u32 value, void *context)
1701 {
1702         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1703         union acpi_object *obj;
1704         struct event_return_value return_value;
1705         acpi_status status;
1706         u16 device_state;
1707         const struct key_entry *key;
1708         u32 scancode;
1709
1710         status = wmi_get_event_data(value, &response);
1711         if (status != AE_OK) {
1712                 pr_warn("bad event status 0x%x\n", status);
1713                 return;
1714         }
1715
1716         obj = (union acpi_object *)response.pointer;
1717
1718         if (!obj)
1719                 return;
1720         if (obj->type != ACPI_TYPE_BUFFER) {
1721                 pr_warn("Unknown response received %d\n", obj->type);
1722                 kfree(obj);
1723                 return;
1724         }
1725         if (obj->buffer.length != 8) {
1726                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1727                 kfree(obj);
1728                 return;
1729         }
1730
1731         return_value = *((struct event_return_value *)obj->buffer.pointer);
1732         kfree(obj);
1733
1734         switch (return_value.function) {
1735         case WMID_HOTKEY_EVENT:
1736                 device_state = return_value.device_state;
1737                 pr_debug("device state: 0x%x\n", device_state);
1738
1739                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1740                                                         return_value.key_num);
1741                 if (!key) {
1742                         pr_warn("Unknown key number - 0x%x\n",
1743                                 return_value.key_num);
1744                 } else {
1745                         scancode = return_value.key_num;
1746                         switch (key->keycode) {
1747                         case KEY_WLAN:
1748                         case KEY_BLUETOOTH:
1749                                 if (has_cap(ACER_CAP_WIRELESS))
1750                                         rfkill_set_sw_state(wireless_rfkill,
1751                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1752                                 if (has_cap(ACER_CAP_THREEG))
1753                                         rfkill_set_sw_state(threeg_rfkill,
1754                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1755                                 if (has_cap(ACER_CAP_BLUETOOTH))
1756                                         rfkill_set_sw_state(bluetooth_rfkill,
1757                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1758                                 break;
1759                         case KEY_TOUCHPAD_TOGGLE:
1760                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1761                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1762                         }
1763                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1764                 }
1765                 break;
1766         case WMID_ACCEL_EVENT:
1767                 acer_gsensor_event();
1768                 break;
1769         default:
1770                 pr_warn("Unknown function number - %d - %d\n",
1771                         return_value.function, return_value.key_num);
1772                 break;
1773         }
1774 }
1775
1776 static acpi_status __init
1777 wmid3_set_function_mode(struct func_input_params *params,
1778                         struct func_return_value *return_value)
1779 {
1780         acpi_status status;
1781         union acpi_object *obj;
1782
1783         struct acpi_buffer input = { sizeof(struct func_input_params), params };
1784         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1785
1786         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1787         if (ACPI_FAILURE(status))
1788                 return status;
1789
1790         obj = output.pointer;
1791
1792         if (!obj)
1793                 return AE_ERROR;
1794         else if (obj->type != ACPI_TYPE_BUFFER) {
1795                 kfree(obj);
1796                 return AE_ERROR;
1797         }
1798         if (obj->buffer.length != 4) {
1799                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1800                 kfree(obj);
1801                 return AE_ERROR;
1802         }
1803
1804         *return_value = *((struct func_return_value *)obj->buffer.pointer);
1805         kfree(obj);
1806
1807         return status;
1808 }
1809
1810 static int __init acer_wmi_enable_ec_raw(void)
1811 {
1812         struct func_return_value return_value;
1813         acpi_status status;
1814         struct func_input_params params = {
1815                 .function_num = 0x1,
1816                 .commun_devices = 0xFFFF,
1817                 .devices = 0xFFFF,
1818                 .app_status = 0x00,             /* Launch Manager Deactive */
1819                 .app_mask = 0x01,
1820         };
1821
1822         status = wmid3_set_function_mode(&params, &return_value);
1823
1824         if (return_value.error_code || return_value.ec_return_value)
1825                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1826                         return_value.error_code,
1827                         return_value.ec_return_value);
1828         else
1829                 pr_info("Enabled EC raw mode\n");
1830
1831         return status;
1832 }
1833
1834 static int __init acer_wmi_enable_lm(void)
1835 {
1836         struct func_return_value return_value;
1837         acpi_status status;
1838         struct func_input_params params = {
1839                 .function_num = 0x1,
1840                 .commun_devices = 0xFFFF,
1841                 .devices = 0xFFFF,
1842                 .app_status = 0x01,            /* Launch Manager Active */
1843                 .app_mask = 0x01,
1844         };
1845
1846         status = wmid3_set_function_mode(&params, &return_value);
1847
1848         if (return_value.error_code || return_value.ec_return_value)
1849                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1850                         return_value.error_code,
1851                         return_value.ec_return_value);
1852
1853         return status;
1854 }
1855
1856 static int __init acer_wmi_enable_rf_button(void)
1857 {
1858         struct func_return_value return_value;
1859         acpi_status status;
1860         struct func_input_params params = {
1861                 .function_num = 0x1,
1862                 .commun_devices = 0xFFFF,
1863                 .devices = 0xFFFF,
1864                 .app_status = 0x10,            /* RF Button Active */
1865                 .app_mask = 0x10,
1866         };
1867
1868         status = wmid3_set_function_mode(&params, &return_value);
1869
1870         if (return_value.error_code || return_value.ec_return_value)
1871                 pr_warn("Enabling RF Button failed: 0x%x - 0x%x\n",
1872                         return_value.error_code,
1873                         return_value.ec_return_value);
1874
1875         return status;
1876 }
1877
1878 static int __init acer_wmi_accel_setup(void)
1879 {
1880         struct acpi_device *adev;
1881         int err;
1882
1883         adev = acpi_dev_get_first_match_dev("BST0001", NULL, -1);
1884         if (!adev)
1885                 return -ENODEV;
1886
1887         gsensor_handle = acpi_device_handle(adev);
1888         acpi_dev_put(adev);
1889
1890         interface->capability |= ACER_CAP_ACCEL;
1891
1892         acer_wmi_accel_dev = input_allocate_device();
1893         if (!acer_wmi_accel_dev)
1894                 return -ENOMEM;
1895
1896         acer_wmi_accel_dev->open = acer_gsensor_open;
1897
1898         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1899         acer_wmi_accel_dev->phys = "wmi/input1";
1900         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1901         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1902         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1903         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1904         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1905
1906         err = input_register_device(acer_wmi_accel_dev);
1907         if (err)
1908                 goto err_free_dev;
1909
1910         return 0;
1911
1912 err_free_dev:
1913         input_free_device(acer_wmi_accel_dev);
1914         return err;
1915 }
1916
1917 static void acer_wmi_accel_destroy(void)
1918 {
1919         input_unregister_device(acer_wmi_accel_dev);
1920 }
1921
1922 static int __init acer_wmi_input_setup(void)
1923 {
1924         acpi_status status;
1925         int err;
1926
1927         acer_wmi_input_dev = input_allocate_device();
1928         if (!acer_wmi_input_dev)
1929                 return -ENOMEM;
1930
1931         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1932         acer_wmi_input_dev->phys = "wmi/input0";
1933         acer_wmi_input_dev->id.bustype = BUS_HOST;
1934
1935         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1936         if (err)
1937                 goto err_free_dev;
1938
1939         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1940                                                 acer_wmi_notify, NULL);
1941         if (ACPI_FAILURE(status)) {
1942                 err = -EIO;
1943                 goto err_free_dev;
1944         }
1945
1946         err = input_register_device(acer_wmi_input_dev);
1947         if (err)
1948                 goto err_uninstall_notifier;
1949
1950         return 0;
1951
1952 err_uninstall_notifier:
1953         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1954 err_free_dev:
1955         input_free_device(acer_wmi_input_dev);
1956         return err;
1957 }
1958
1959 static void acer_wmi_input_destroy(void)
1960 {
1961         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1962         input_unregister_device(acer_wmi_input_dev);
1963 }
1964
1965 /*
1966  * debugfs functions
1967  */
1968 static u32 get_wmid_devices(void)
1969 {
1970         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1971         union acpi_object *obj;
1972         acpi_status status;
1973         u32 devices = 0;
1974
1975         status = wmi_query_block(WMID_GUID2, 0, &out);
1976         if (ACPI_FAILURE(status))
1977                 return 0;
1978
1979         obj = (union acpi_object *) out.pointer;
1980         if (obj) {
1981                 if (obj->type == ACPI_TYPE_BUFFER &&
1982                         (obj->buffer.length == sizeof(u32) ||
1983                         obj->buffer.length == sizeof(u64))) {
1984                         devices = *((u32 *) obj->buffer.pointer);
1985                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1986                         devices = (u32) obj->integer.value;
1987                 }
1988         }
1989
1990         kfree(out.pointer);
1991         return devices;
1992 }
1993
1994 /*
1995  * Platform device
1996  */
1997 static int acer_platform_probe(struct platform_device *device)
1998 {
1999         int err;
2000
2001         if (has_cap(ACER_CAP_MAILLED)) {
2002                 err = acer_led_init(&device->dev);
2003                 if (err)
2004                         goto error_mailled;
2005         }
2006
2007         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2008                 err = acer_backlight_init(&device->dev);
2009                 if (err)
2010                         goto error_brightness;
2011         }
2012
2013         err = acer_rfkill_init(&device->dev);
2014         if (err)
2015                 goto error_rfkill;
2016
2017         return err;
2018
2019 error_rfkill:
2020         if (has_cap(ACER_CAP_BRIGHTNESS))
2021                 acer_backlight_exit();
2022 error_brightness:
2023         if (has_cap(ACER_CAP_MAILLED))
2024                 acer_led_exit();
2025 error_mailled:
2026         return err;
2027 }
2028
2029 static int acer_platform_remove(struct platform_device *device)
2030 {
2031         if (has_cap(ACER_CAP_MAILLED))
2032                 acer_led_exit();
2033         if (has_cap(ACER_CAP_BRIGHTNESS))
2034                 acer_backlight_exit();
2035
2036         acer_rfkill_exit();
2037         return 0;
2038 }
2039
2040 #ifdef CONFIG_PM_SLEEP
2041 static int acer_suspend(struct device *dev)
2042 {
2043         u32 value;
2044         struct acer_data *data = &interface->data;
2045
2046         if (!data)
2047                 return -ENOMEM;
2048
2049         if (has_cap(ACER_CAP_MAILLED)) {
2050                 get_u32(&value, ACER_CAP_MAILLED);
2051                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2052                 data->mailled = value;
2053         }
2054
2055         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2056                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2057                 data->brightness = value;
2058         }
2059
2060         return 0;
2061 }
2062
2063 static int acer_resume(struct device *dev)
2064 {
2065         struct acer_data *data = &interface->data;
2066
2067         if (!data)
2068                 return -ENOMEM;
2069
2070         if (has_cap(ACER_CAP_MAILLED))
2071                 set_u32(data->mailled, ACER_CAP_MAILLED);
2072
2073         if (has_cap(ACER_CAP_BRIGHTNESS))
2074                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2075
2076         if (has_cap(ACER_CAP_ACCEL))
2077                 acer_gsensor_init();
2078
2079         return 0;
2080 }
2081 #else
2082 #define acer_suspend    NULL
2083 #define acer_resume     NULL
2084 #endif
2085
2086 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2087
2088 static void acer_platform_shutdown(struct platform_device *device)
2089 {
2090         struct acer_data *data = &interface->data;
2091
2092         if (!data)
2093                 return;
2094
2095         if (has_cap(ACER_CAP_MAILLED))
2096                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2097 }
2098
2099 static struct platform_driver acer_platform_driver = {
2100         .driver = {
2101                 .name = "acer-wmi",
2102                 .pm = &acer_pm,
2103         },
2104         .probe = acer_platform_probe,
2105         .remove = acer_platform_remove,
2106         .shutdown = acer_platform_shutdown,
2107 };
2108
2109 static struct platform_device *acer_platform_device;
2110
2111 static void remove_debugfs(void)
2112 {
2113         debugfs_remove_recursive(interface->debug.root);
2114 }
2115
2116 static void __init create_debugfs(void)
2117 {
2118         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2119
2120         debugfs_create_u32("devices", S_IRUGO, interface->debug.root,
2121                            &interface->debug.wmid_devices);
2122 }
2123
2124 static int __init acer_wmi_init(void)
2125 {
2126         int err;
2127
2128         pr_info("Acer Laptop ACPI-WMI Extras\n");
2129
2130         if (dmi_check_system(acer_blacklist)) {
2131                 pr_info("Blacklisted hardware detected - not loading\n");
2132                 return -ENODEV;
2133         }
2134
2135         find_quirks();
2136
2137         /*
2138          * The AMW0_GUID1 wmi is not only found on Acer family but also other
2139          * machines like Lenovo, Fujitsu and Medion. In the past days,
2140          * acer-wmi driver handled those non-Acer machines by quirks list.
2141          * But actually acer-wmi driver was loaded on any machines that have
2142          * AMW0_GUID1. This behavior is strange because those machines should
2143          * be supported by appropriate wmi drivers. e.g. fujitsu-laptop,
2144          * ideapad-laptop. So, here checks the machine that has AMW0_GUID1
2145          * should be in Acer/Gateway/Packard Bell white list, or it's already
2146          * in the past quirk list.
2147          */
2148         if (wmi_has_guid(AMW0_GUID1) &&
2149             !dmi_check_system(amw0_whitelist) &&
2150             quirks == &quirk_unknown) {
2151                 pr_debug("Unsupported machine has AMW0_GUID1, unable to load\n");
2152                 return -ENODEV;
2153         }
2154
2155         /*
2156          * Detect which ACPI-WMI interface we're using.
2157          */
2158         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2159                 interface = &AMW0_V2_interface;
2160
2161         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2162                 interface = &wmid_interface;
2163
2164         if (wmi_has_guid(WMID_GUID3))
2165                 interface = &wmid_v2_interface;
2166
2167         if (interface)
2168                 dmi_walk(type_aa_dmi_decode, NULL);
2169
2170         if (wmi_has_guid(WMID_GUID2) && interface) {
2171                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2172                         pr_err("Unable to detect available WMID devices\n");
2173                         return -ENODEV;
2174                 }
2175                 /* WMID always provides brightness methods */
2176                 interface->capability |= ACER_CAP_BRIGHTNESS;
2177         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2178                 pr_err("No WMID device detection method found\n");
2179                 return -ENODEV;
2180         }
2181
2182         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2183                 interface = &AMW0_interface;
2184
2185                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2186                         pr_err("Unable to detect available AMW0 devices\n");
2187                         return -ENODEV;
2188                 }
2189         }
2190
2191         if (wmi_has_guid(AMW0_GUID1))
2192                 AMW0_find_mailled();
2193
2194         if (!interface) {
2195                 pr_err("No or unsupported WMI interface, unable to load\n");
2196                 return -ENODEV;
2197         }
2198
2199         set_quirks();
2200
2201         if (dmi_check_system(video_vendor_dmi_table))
2202                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2203
2204         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2205                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2206
2207         if (wmi_has_guid(WMID_GUID3)) {
2208                 if (ACPI_FAILURE(acer_wmi_enable_rf_button()))
2209                         pr_warn("Cannot enable RF Button Driver\n");
2210
2211                 if (ec_raw_mode) {
2212                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2213                                 pr_err("Cannot enable EC raw mode\n");
2214                                 return -ENODEV;
2215                         }
2216                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2217                         pr_err("Cannot enable Launch Manager mode\n");
2218                         return -ENODEV;
2219                 }
2220         } else if (ec_raw_mode) {
2221                 pr_info("No WMID EC raw mode enable method\n");
2222         }
2223
2224         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2225                 err = acer_wmi_input_setup();
2226                 if (err)
2227                         return err;
2228                 err = acer_wmi_accel_setup();
2229                 if (err && err != -ENODEV)
2230                         pr_warn("Cannot enable accelerometer\n");
2231         }
2232
2233         err = platform_driver_register(&acer_platform_driver);
2234         if (err) {
2235                 pr_err("Unable to register platform driver\n");
2236                 goto error_platform_register;
2237         }
2238
2239         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2240         if (!acer_platform_device) {
2241                 err = -ENOMEM;
2242                 goto error_device_alloc;
2243         }
2244
2245         err = platform_device_add(acer_platform_device);
2246         if (err)
2247                 goto error_device_add;
2248
2249         if (wmi_has_guid(WMID_GUID2)) {
2250                 interface->debug.wmid_devices = get_wmid_devices();
2251                 create_debugfs();
2252         }
2253
2254         /* Override any initial settings with values from the commandline */
2255         acer_commandline_init();
2256
2257         return 0;
2258
2259 error_device_add:
2260         platform_device_put(acer_platform_device);
2261 error_device_alloc:
2262         platform_driver_unregister(&acer_platform_driver);
2263 error_platform_register:
2264         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2265                 acer_wmi_input_destroy();
2266         if (has_cap(ACER_CAP_ACCEL))
2267                 acer_wmi_accel_destroy();
2268
2269         return err;
2270 }
2271
2272 static void __exit acer_wmi_exit(void)
2273 {
2274         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2275                 acer_wmi_input_destroy();
2276
2277         if (has_cap(ACER_CAP_ACCEL))
2278                 acer_wmi_accel_destroy();
2279
2280         remove_debugfs();
2281         platform_device_unregister(acer_platform_device);
2282         platform_driver_unregister(&acer_platform_driver);
2283
2284         pr_info("Acer Laptop WMI Extras unloaded\n");
2285         return;
2286 }
2287
2288 module_init(acer_wmi_init);
2289 module_exit(acer_wmi_exit);