drivers/platform/x86/acer-wmi.c

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