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_IGNORE, 0x84, {KEY_KBDILLUMTOGGLE} }, /* Automatic Keyboard background light toggle */
 115         {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
 116         {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
 117         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 118         {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
 119         {KE_KEY, 0x86, {KEY_WLAN} },
 120         {KE_KEY, 0x87, {KEY_POWER} },
 121         {KE_END, 0}
 122 };
 123
 124 static struct input_dev *acer_wmi_input_dev;
 125 static struct input_dev *acer_wmi_accel_dev;
 126
 127 struct event_return_value {
 128         u8 function;
 129         u8 key_num;
 130         u16 device_state;
 131         u32 reserved;
 132 } __attribute__((packed));
 133
 134 /*
 135  * GUID3 Get Device Status device flags
 136  */
 137 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 138 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 139 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 140 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 141 #define ACER_WMID3_GDS_RFBTN            (1<<14) /* RF Button */
 142
 143 #define ACER_WMID3_GDS_TOUCHPAD         (1<<1)  /* Touchpad */
 144
 145 /* Hotkey Customized Setting and Acer Application Status.
 146  * Set Device Default Value and Report Acer Application Status.
 147  * When Acer Application starts, it will run this method to inform
 148  * BIOS/EC that Acer Application is on.
 149  * App Status
 150  *      Bit[0]: Launch Manager Status
 151  *      Bit[1]: ePM Status
 152  *      Bit[2]: Device Control Status
 153  *      Bit[3]: Acer Power Button Utility Status
 154  *      Bit[4]: RF Button Status
 155  *      Bit[5]: ODD PM Status
 156  *      Bit[6]: Device Default Value Control
 157  *      Bit[7]: Hall Sensor Application Status
 158  */
 159 struct func_input_params {
 160         u8 function_num;        /* Function Number */
 161         u16 commun_devices;     /* Communication type devices default status */
 162         u16 devices;            /* Other type devices default status */
 163         u8 app_status;          /* Acer Device Status. LM, ePM, RF Button... */
 164         u8 app_mask;            /* Bit mask to app_status */
 165         u8 reserved;
 166 } __attribute__((packed));
 167
 168 struct func_return_value {
 169         u8 error_code;          /* Error Code */
 170         u8 ec_return_value;     /* EC Return Value */
 171         u16 reserved;
 172 } __attribute__((packed));
 173
 174 struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 175         u8 function_num;        /* Function Number */
 176         u8 hotkey_number;       /* Hotkey Number */
 177         u16 devices;            /* Set Device */
 178         u8 volume_value;        /* Volume Value */
 179 } __attribute__((packed));
 180
 181 struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 182         u8 function_num;        /* Function Number */
 183         u8 hotkey_number;       /* Hotkey Number */
 184         u16 devices;            /* Get Device */
 185 } __attribute__((packed));
 186
 187 struct wmid3_gds_return_value { /* Get Device Status return value*/
 188         u8 error_code;          /* Error Code */
 189         u8 ec_return_value;     /* EC Return Value */
 190         u16 devices;            /* Current Device Status */
 191         u32 reserved;
 192 } __attribute__((packed));
 193
 194 struct hotkey_function_type_aa {
 195         u8 type;
 196         u8 length;
 197         u16 handle;
 198         u16 commun_func_bitmap;
 199         u16 application_func_bitmap;
 200         u16 media_func_bitmap;
 201         u16 display_func_bitmap;
 202         u16 others_func_bitmap;
 203         u8 commun_fn_key_number;
 204 } __attribute__((packed));
 205
 206 /*
 207  * Interface capability flags
 208  */
 209 #define ACER_CAP_MAILLED                (1<<0)
 210 #define ACER_CAP_WIRELESS               (1<<1)
 211 #define ACER_CAP_BLUETOOTH              (1<<2)
 212 #define ACER_CAP_BRIGHTNESS             (1<<3)
 213 #define ACER_CAP_THREEG                 (1<<4)
 214 #define ACER_CAP_ACCEL                  (1<<5)
 215 #define ACER_CAP_RFBTN                  (1<<6)
 216 #define ACER_CAP_ANY                    (0xFFFFFFFF)
 217
 218 /*
 219  * Interface type flags
 220  */
 221 enum interface_flags {
 222         ACER_AMW0,
 223         ACER_AMW0_V2,
 224         ACER_WMID,
 225         ACER_WMID_v2,
 226 };
 227
 228 #define ACER_DEFAULT_WIRELESS  0
 229 #define ACER_DEFAULT_BLUETOOTH 0
 230 #define ACER_DEFAULT_MAILLED   0
 231 #define ACER_DEFAULT_THREEG    0
 232
 233 static int max_brightness = 0xF;
 234
 235 static int mailled = -1;
 236 static int brightness = -1;
 237 static int threeg = -1;
 238 static int force_series;
 239 static bool ec_raw_mode;
 240 static bool has_type_aa;
 241 static u16 commun_func_bitmap;
 242 static u8 commun_fn_key_number;
 243
 244 module_param(mailled, int, 0444);
 245 module_param(brightness, int, 0444);
 246 module_param(threeg, int, 0444);
 247 module_param(force_series, int, 0444);
 248 module_param(ec_raw_mode, bool, 0444);
 249 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 250 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 251 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 252 MODULE_PARM_DESC(force_series, "Force a different laptop series");
 253 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 254
 255 struct acer_data {
 256         int mailled;
 257         int threeg;
 258         int brightness;
 259 };
 260
 261 struct acer_debug {
 262         struct dentry *root;
 263         u32 wmid_devices;
 264 };
 265
 266 static struct rfkill *wireless_rfkill;
 267 static struct rfkill *bluetooth_rfkill;
 268 static struct rfkill *threeg_rfkill;
 269 static bool rfkill_inited;
 270
 271 /* Each low-level interface must define at least some of the following */
 272 struct wmi_interface {
 273         /* The WMI device type */
 274         u32 type;
 275
 276         /* The capabilities this interface provides */
 277         u32 capability;
 278
 279         /* Private data for the current interface */
 280         struct acer_data data;
 281
 282         /* debugfs entries associated with this interface */
 283         struct acer_debug debug;
 284 };
 285
 286 /* The static interface pointer, points to the currently detected interface */
 287 static struct wmi_interface *interface;
 288
 289 /*
 290  * Embedded Controller quirks
 291  * Some laptops require us to directly access the EC to either enable or query
 292  * features that are not available through WMI.
 293  */
 294
 295 struct quirk_entry {
 296         u8 wireless;
 297         u8 mailled;
 298         s8 brightness;
 299         u8 bluetooth;
 300 };
 301
 302 static struct quirk_entry *quirks;
 303
 304 static void __init set_quirks(void)
 305 {
 306         if (!interface)
 307                 return;
 308
 309         if (quirks->mailled)
 310                 interface->capability |= ACER_CAP_MAILLED;
 311
 312         if (quirks->brightness)
 313                 interface->capability |= ACER_CAP_BRIGHTNESS;
 314 }
 315
 316 static int __init dmi_matched(const struct dmi_system_id *dmi)
 317 {
 318         quirks = dmi->driver_data;
 319         return 1;
 320 }
 321
 322 static struct quirk_entry quirk_unknown = {
 323 };
 324
 325 static struct quirk_entry quirk_acer_aspire_1520 = {
 326         .brightness = -1,
 327 };
 328
 329 static struct quirk_entry quirk_acer_travelmate_2490 = {
 330         .mailled = 1,
 331 };
 332
 333 /* This AMW0 laptop has no bluetooth */
 334 static struct quirk_entry quirk_medion_md_98300 = {
 335         .wireless = 1,
 336 };
 337
 338 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 339         .wireless = 2,
 340 };
 341
 342 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 343         .wireless = 3,
 344 };
 345
 346 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
 347 static const struct dmi_system_id acer_blacklist[] __initconst = {
 348         {
 349                 .ident = "Acer Aspire One (SSD)",
 350                 .matches = {
 351                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 352                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 353                 },
 354         },
 355         {
 356                 .ident = "Acer Aspire One (HDD)",
 357                 .matches = {
 358                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 359                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 360                 },
 361         },
 362         {}
 363 };
 364
 365 static const struct dmi_system_id amw0_whitelist[] __initconst = {
 366         {
 367                 .ident = "Acer",
 368                 .matches = {
 369                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 370                 },
 371         },
 372         {
 373                 .ident = "Gateway",
 374                 .matches = {
 375                         DMI_MATCH(DMI_SYS_VENDOR, "Gateway"),
 376                 },
 377         },
 378         {
 379                 .ident = "Packard Bell",
 380                 .matches = {
 381                         DMI_MATCH(DMI_SYS_VENDOR, "Packard Bell"),
 382                 },
 383         },
 384         {}
 385 };
 386
 387 /*
 388  * This quirk table is only for Acer/Gateway/Packard Bell family
 389  * that those machines are supported by acer-wmi driver.
 390  */
 391 static const struct dmi_system_id acer_quirks[] __initconst = {
 392         {
 393                 .callback = dmi_matched,
 394                 .ident = "Acer Aspire 1360",
 395                 .matches = {
 396                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 397                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 398                 },
 399                 .driver_data = &quirk_acer_aspire_1520,
 400         },
 401         {
 402                 .callback = dmi_matched,
 403                 .ident = "Acer Aspire 1520",
 404                 .matches = {
 405                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 406                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 407                 },
 408                 .driver_data = &quirk_acer_aspire_1520,
 409         },
 410         {
 411                 .callback = dmi_matched,
 412                 .ident = "Acer Aspire 3100",
 413                 .matches = {
 414                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 415                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 416                 },
 417                 .driver_data = &quirk_acer_travelmate_2490,
 418         },
 419         {
 420                 .callback = dmi_matched,
 421                 .ident = "Acer Aspire 3610",
 422                 .matches = {
 423                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 424                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 425                 },
 426                 .driver_data = &quirk_acer_travelmate_2490,
 427         },
 428         {
 429                 .callback = dmi_matched,
 430                 .ident = "Acer Aspire 5100",
 431                 .matches = {
 432                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 433                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 434                 },
 435                 .driver_data = &quirk_acer_travelmate_2490,
 436         },
 437         {
 438                 .callback = dmi_matched,
 439                 .ident = "Acer Aspire 5610",
 440                 .matches = {
 441                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 442                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 443                 },
 444                 .driver_data = &quirk_acer_travelmate_2490,
 445         },
 446         {
 447                 .callback = dmi_matched,
 448                 .ident = "Acer Aspire 5630",
 449                 .matches = {
 450                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 451                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 452                 },
 453                 .driver_data = &quirk_acer_travelmate_2490,
 454         },
 455         {
 456                 .callback = dmi_matched,
 457                 .ident = "Acer Aspire 5650",
 458                 .matches = {
 459                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 460                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 461                 },
 462                 .driver_data = &quirk_acer_travelmate_2490,
 463         },
 464         {
 465                 .callback = dmi_matched,
 466                 .ident = "Acer Aspire 5680",
 467                 .matches = {
 468                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 469                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 470                 },
 471                 .driver_data = &quirk_acer_travelmate_2490,
 472         },
 473         {
 474                 .callback = dmi_matched,
 475                 .ident = "Acer Aspire 9110",
 476                 .matches = {
 477                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 478                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 479                 },
 480                 .driver_data = &quirk_acer_travelmate_2490,
 481         },
 482         {
 483                 .callback = dmi_matched,
 484                 .ident = "Acer TravelMate 2490",
 485                 .matches = {
 486                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 487                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 488                 },
 489                 .driver_data = &quirk_acer_travelmate_2490,
 490         },
 491         {
 492                 .callback = dmi_matched,
 493                 .ident = "Acer TravelMate 4200",
 494                 .matches = {
 495                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 496                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 497                 },
 498                 .driver_data = &quirk_acer_travelmate_2490,
 499         },
 500         {}
 501 };
 502
 503 /*
 504  * This quirk list is for those non-acer machines that have AMW0_GUID1
 505  * but supported by acer-wmi in past days. Keeping this quirk list here
 506  * is only for backward compatible. Please do not add new machine to
 507  * here anymore. Those non-acer machines should be supported by
 508  * appropriate wmi drivers.
 509  */
 510 static const struct dmi_system_id non_acer_quirks[] __initconst = {
 511         {
 512                 .callback = dmi_matched,
 513                 .ident = "Fujitsu Siemens Amilo Li 1718",
 514                 .matches = {
 515                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 516                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 517                 },
 518                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 519         },
 520         {
 521                 .callback = dmi_matched,
 522                 .ident = "Medion MD 98300",
 523                 .matches = {
 524                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 525                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 526                 },
 527                 .driver_data = &quirk_medion_md_98300,
 528         },
 529         {
 530                 .callback = dmi_matched,
 531                 .ident = "Lenovo Ideapad S205",
 532                 .matches = {
 533                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 534                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 535                 },
 536                 .driver_data = &quirk_lenovo_ideapad_s205,
 537         },
 538         {
 539                 .callback = dmi_matched,
 540                 .ident = "Lenovo Ideapad S205 (Brazos)",
 541                 .matches = {
 542                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 543                         DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 544                 },
 545                 .driver_data = &quirk_lenovo_ideapad_s205,
 546         },
 547         {
 548                 .callback = dmi_matched,
 549                 .ident = "Lenovo 3000 N200",
 550                 .matches = {
 551                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 552                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 553                 },
 554                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 555         },
 556         {
 557                 .callback = dmi_matched,
 558                 .ident = "Lenovo Ideapad S205-10382JG",
 559                 .matches = {
 560                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 561                         DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
 562                 },
 563                 .driver_data = &quirk_lenovo_ideapad_s205,
 564         },
 565         {
 566                 .callback = dmi_matched,
 567                 .ident = "Lenovo Ideapad S205-1038DPG",
 568                 .matches = {
 569                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 570                         DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
 571                 },
 572                 .driver_data = &quirk_lenovo_ideapad_s205,
 573         },
 574         {}
 575 };
 576
 577 static int __init
 578 video_set_backlight_video_vendor(const struct dmi_system_id *d)
 579 {
 580         interface->capability &= ~ACER_CAP_BRIGHTNESS;
 581         pr_info("Brightness must be controlled by generic video driver\n");
 582         return 0;
 583 }
 584
 585 static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
 586         {
 587                 .callback = video_set_backlight_video_vendor,
 588                 .ident = "Acer TravelMate 4750",
 589                 .matches = {
 590                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 591                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 592                 },
 593         },
 594         {
 595                 .callback = video_set_backlight_video_vendor,
 596                 .ident = "Acer Extensa 5235",
 597                 .matches = {
 598                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 599                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 600                 },
 601         },
 602         {
 603                 .callback = video_set_backlight_video_vendor,
 604                 .ident = "Acer TravelMate 5760",
 605                 .matches = {
 606                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 607                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 608                 },
 609         },
 610         {
 611                 .callback = video_set_backlight_video_vendor,
 612                 .ident = "Acer Aspire 5750",
 613                 .matches = {
 614                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 615                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 616                 },
 617         },
 618         {
 619                 .callback = video_set_backlight_video_vendor,
 620                 .ident = "Acer Aspire 5741",
 621                 .matches = {
 622                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 623                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
 624                 },
 625         },
 626         {
 627                 /*
 628                  * Note no video_set_backlight_video_vendor, we must use the
 629                  * acer interface, as there is no native backlight interface.
 630                  */
 631                 .ident = "Acer KAV80",
 632                 .matches = {
 633                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 634                         DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
 635                 },
 636         },
 637         {}
 638 };
 639
 640 /* Find which quirks are needed for a particular vendor/ model pair */
 641 static void __init find_quirks(void)
 642 {
 643         if (!force_series) {
 644                 dmi_check_system(acer_quirks);
 645                 dmi_check_system(non_acer_quirks);
 646         } else if (force_series == 2490) {
 647                 quirks = &quirk_acer_travelmate_2490;
 648         }
 649
 650         if (quirks == NULL)
 651                 quirks = &quirk_unknown;
 652
 653         set_quirks();
 654 }
 655
 656 /*
 657  * General interface convenience methods
 658  */
 659
 660 static bool has_cap(u32 cap)
 661 {
 662         return interface->capability & cap;
 663 }
 664
 665 /*
 666  * AMW0 (V1) interface
 667  */
 668 struct wmab_args {
 669         u32 eax;
 670         u32 ebx;
 671         u32 ecx;
 672         u32 edx;
 673 };
 674
 675 struct wmab_ret {
 676         u32 eax;
 677         u32 ebx;
 678         u32 ecx;
 679         u32 edx;
 680         u32 eex;
 681 };
 682
 683 static acpi_status wmab_execute(struct wmab_args *regbuf,
 684 struct acpi_buffer *result)
 685 {
 686         struct acpi_buffer input;
 687         acpi_status status;
 688         input.length = sizeof(struct wmab_args);
 689         input.pointer = (u8 *)regbuf;
 690
 691         status = wmi_evaluate_method(AMW0_GUID1, 0, 1, &input, result);
 692
 693         return status;
 694 }
 695
 696 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 697 {
 698         int err;
 699         u8 result;
 700
 701         switch (cap) {
 702         case ACER_CAP_MAILLED:
 703                 switch (quirks->mailled) {
 704                 default:
 705                         err = ec_read(0xA, &result);
 706                         if (err)
 707                                 return AE_ERROR;
 708                         *value = (result >> 7) & 0x1;
 709                         return AE_OK;
 710                 }
 711                 break;
 712         case ACER_CAP_WIRELESS:
 713                 switch (quirks->wireless) {
 714                 case 1:
 715                         err = ec_read(0x7B, &result);
 716                         if (err)
 717                                 return AE_ERROR;
 718                         *value = result & 0x1;
 719                         return AE_OK;
 720                 case 2:
 721                         err = ec_read(0x71, &result);
 722                         if (err)
 723                                 return AE_ERROR;
 724                         *value = result & 0x1;
 725                         return AE_OK;
 726                 case 3:
 727                         err = ec_read(0x78, &result);
 728                         if (err)
 729                                 return AE_ERROR;
 730                         *value = result & 0x1;
 731                         return AE_OK;
 732                 default:
 733                         err = ec_read(0xA, &result);
 734                         if (err)
 735                                 return AE_ERROR;
 736                         *value = (result >> 2) & 0x1;
 737                         return AE_OK;
 738                 }
 739                 break;
 740         case ACER_CAP_BLUETOOTH:
 741                 switch (quirks->bluetooth) {
 742                 default:
 743                         err = ec_read(0xA, &result);
 744                         if (err)
 745                                 return AE_ERROR;
 746                         *value = (result >> 4) & 0x1;
 747                         return AE_OK;
 748                 }
 749                 break;
 750         case ACER_CAP_BRIGHTNESS:
 751                 switch (quirks->brightness) {
 752                 default:
 753                         err = ec_read(0x83, &result);
 754                         if (err)
 755                                 return AE_ERROR;
 756                         *value = result;
 757                         return AE_OK;
 758                 }
 759                 break;
 760         default:
 761                 return AE_ERROR;
 762         }
 763         return AE_OK;
 764 }
 765
 766 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 767 {
 768         struct wmab_args args;
 769
 770         args.eax = ACER_AMW0_WRITE;
 771         args.ebx = value ? (1<<8) : 0;
 772         args.ecx = args.edx = 0;
 773
 774         switch (cap) {
 775         case ACER_CAP_MAILLED:
 776                 if (value > 1)
 777                         return AE_BAD_PARAMETER;
 778                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 779                 break;
 780         case ACER_CAP_WIRELESS:
 781                 if (value > 1)
 782                         return AE_BAD_PARAMETER;
 783                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 784                 break;
 785         case ACER_CAP_BLUETOOTH:
 786                 if (value > 1)
 787                         return AE_BAD_PARAMETER;
 788                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 789                 break;
 790         case ACER_CAP_BRIGHTNESS:
 791                 if (value > max_brightness)
 792                         return AE_BAD_PARAMETER;
 793                 switch (quirks->brightness) {
 794                 default:
 795                         return ec_write(0x83, value);
 796                         break;
 797                 }
 798         default:
 799                 return AE_ERROR;
 800         }
 801
 802         /* Actually do the set */
 803         return wmab_execute(&args, NULL);
 804 }
 805
 806 static acpi_status __init AMW0_find_mailled(void)
 807 {
 808         struct wmab_args args;
 809         struct wmab_ret ret;
 810         acpi_status status = AE_OK;
 811         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 812         union acpi_object *obj;
 813
 814         args.eax = 0x86;
 815         args.ebx = args.ecx = args.edx = 0;
 816
 817         status = wmab_execute(&args, &out);
 818         if (ACPI_FAILURE(status))
 819                 return status;
 820
 821         obj = (union acpi_object *) out.pointer;
 822         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 823         obj->buffer.length == sizeof(struct wmab_ret)) {
 824                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 825         } else {
 826                 kfree(out.pointer);
 827                 return AE_ERROR;
 828         }
 829
 830         if (ret.eex & 0x1)
 831                 interface->capability |= ACER_CAP_MAILLED;
 832
 833         kfree(out.pointer);
 834
 835         return AE_OK;
 836 }
 837
 838 static const struct acpi_device_id norfkill_ids[] __initconst = {
 839         { "VPC2004", 0},
 840         { "IBM0068", 0},
 841         { "LEN0068", 0},
 842         { "SNY5001", 0},        /* sony-laptop in charge */
 843         { "HPQ6601", 0},
 844         { "", 0},
 845 };
 846
 847 static int __init AMW0_set_cap_acpi_check_device(void)
 848 {
 849         const struct acpi_device_id *id;
 850
 851         for (id = norfkill_ids; id->id[0]; id++)
 852                 if (acpi_dev_found(id->id))
 853                         return true;
 854
 855         return false;
 856 }
 857
 858 static acpi_status __init AMW0_set_capabilities(void)
 859 {
 860         struct wmab_args args;
 861         struct wmab_ret ret;
 862         acpi_status status;
 863         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 864         union acpi_object *obj;
 865
 866         /*
 867          * On laptops with this strange GUID (non Acer), normal probing doesn't
 868          * work.
 869          */
 870         if (wmi_has_guid(AMW0_GUID2)) {
 871                 if ((quirks != &quirk_unknown) ||
 872                     !AMW0_set_cap_acpi_check_device())
 873                         interface->capability |= ACER_CAP_WIRELESS;
 874                 return AE_OK;
 875         }
 876
 877         args.eax = ACER_AMW0_WRITE;
 878         args.ecx = args.edx = 0;
 879
 880         args.ebx = 0xa2 << 8;
 881         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 882
 883         status = wmab_execute(&args, &out);
 884         if (ACPI_FAILURE(status))
 885                 return status;
 886
 887         obj = out.pointer;
 888         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 889         obj->buffer.length == sizeof(struct wmab_ret)) {
 890                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 891         } else {
 892                 status = AE_ERROR;
 893                 goto out;
 894         }
 895
 896         if (ret.eax & 0x1)
 897                 interface->capability |= ACER_CAP_WIRELESS;
 898
 899         args.ebx = 2 << 8;
 900         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 901
 902         /*
 903          * It's ok to use existing buffer for next wmab_execute call.
 904          * But we need to kfree(out.pointer) if next wmab_execute fail.
 905          */
 906         status = wmab_execute(&args, &out);
 907         if (ACPI_FAILURE(status))
 908                 goto out;
 909
 910         obj = (union acpi_object *) out.pointer;
 911         if (obj && obj->type == ACPI_TYPE_BUFFER
 912         && obj->buffer.length == sizeof(struct wmab_ret)) {
 913                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 914         } else {
 915                 status = AE_ERROR;
 916                 goto out;
 917         }
 918
 919         if (ret.eax & 0x1)
 920                 interface->capability |= ACER_CAP_BLUETOOTH;
 921
 922         /*
 923          * This appears to be safe to enable, since all Wistron based laptops
 924          * appear to use the same EC register for brightness, even if they
 925          * differ for wireless, etc
 926          */
 927         if (quirks->brightness >= 0)
 928                 interface->capability |= ACER_CAP_BRIGHTNESS;
 929
 930         status = AE_OK;
 931 out:
 932         kfree(out.pointer);
 933         return status;
 934 }
 935
 936 static struct wmi_interface AMW0_interface = {
 937         .type = ACER_AMW0,
 938 };
 939
 940 static struct wmi_interface AMW0_V2_interface = {
 941         .type = ACER_AMW0_V2,
 942 };
 943
 944 /*
 945  * New interface (The WMID interface)
 946  */
 947 static acpi_status
 948 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 949 {
 950         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 951         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 952         union acpi_object *obj;
 953         u32 tmp = 0;
 954         acpi_status status;
 955
 956         status = wmi_evaluate_method(WMID_GUID1, 0, method_id, &input, &result);
 957
 958         if (ACPI_FAILURE(status))
 959                 return status;
 960
 961         obj = (union acpi_object *) result.pointer;
 962         if (obj) {
 963                 if (obj->type == ACPI_TYPE_BUFFER &&
 964                         (obj->buffer.length == sizeof(u32) ||
 965                         obj->buffer.length == sizeof(u64))) {
 966                         tmp = *((u32 *) obj->buffer.pointer);
 967                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 968                         tmp = (u32) obj->integer.value;
 969                 }
 970         }
 971
 972         if (out)
 973                 *out = tmp;
 974
 975         kfree(result.pointer);
 976
 977         return status;
 978 }
 979
 980 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 981 {
 982         acpi_status status;
 983         u8 tmp;
 984         u32 result, method_id = 0;
 985
 986         switch (cap) {
 987         case ACER_CAP_WIRELESS:
 988                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 989                 break;
 990         case ACER_CAP_BLUETOOTH:
 991                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 992                 break;
 993         case ACER_CAP_BRIGHTNESS:
 994                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 995                 break;
 996         case ACER_CAP_THREEG:
 997                 method_id = ACER_WMID_GET_THREEG_METHODID;
 998                 break;
 999         case ACER_CAP_MAILLED:
1000                 if (quirks->mailled == 1) {
1001                         ec_read(0x9f, &tmp);
1002                         *value = tmp & 0x1;
1003                         return 0;
1004                 }
1005                 fallthrough;
1006         default:
1007                 return AE_ERROR;
1008         }
1009         status = WMI_execute_u32(method_id, 0, &result);
1010
1011         if (ACPI_SUCCESS(status))
1012                 *value = (u8)result;
1013
1014         return status;
1015 }
1016
1017 static acpi_status WMID_set_u32(u32 value, u32 cap)
1018 {
1019         u32 method_id = 0;
1020         char param;
1021
1022         switch (cap) {
1023         case ACER_CAP_BRIGHTNESS:
1024                 if (value > max_brightness)
1025                         return AE_BAD_PARAMETER;
1026                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
1027                 break;
1028         case ACER_CAP_WIRELESS:
1029                 if (value > 1)
1030                         return AE_BAD_PARAMETER;
1031                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
1032                 break;
1033         case ACER_CAP_BLUETOOTH:
1034                 if (value > 1)
1035                         return AE_BAD_PARAMETER;
1036                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
1037                 break;
1038         case ACER_CAP_THREEG:
1039                 if (value > 1)
1040                         return AE_BAD_PARAMETER;
1041                 method_id = ACER_WMID_SET_THREEG_METHODID;
1042                 break;
1043         case ACER_CAP_MAILLED:
1044                 if (value > 1)
1045                         return AE_BAD_PARAMETER;
1046                 if (quirks->mailled == 1) {
1047                         param = value ? 0x92 : 0x93;
1048                         i8042_lock_chip();
1049                         i8042_command(&param, 0x1059);
1050                         i8042_unlock_chip();
1051                         return 0;
1052                 }
1053                 break;
1054         default:
1055                 return AE_ERROR;
1056         }
1057         return WMI_execute_u32(method_id, (u32)value, NULL);
1058 }
1059
1060 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1061 {
1062         struct wmid3_gds_return_value return_value;
1063         acpi_status status;
1064         union acpi_object *obj;
1065         struct wmid3_gds_get_input_param params = {
1066                 .function_num = 0x1,
1067                 .hotkey_number = commun_fn_key_number,
1068                 .devices = device,
1069         };
1070         struct acpi_buffer input = {
1071                 sizeof(struct wmid3_gds_get_input_param),
1072                 &params
1073         };
1074         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1075
1076         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1077         if (ACPI_FAILURE(status))
1078                 return status;
1079
1080         obj = output.pointer;
1081
1082         if (!obj)
1083                 return AE_ERROR;
1084         else if (obj->type != ACPI_TYPE_BUFFER) {
1085                 kfree(obj);
1086                 return AE_ERROR;
1087         }
1088         if (obj->buffer.length != 8) {
1089                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1090                 kfree(obj);
1091                 return AE_ERROR;
1092         }
1093
1094         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1095         kfree(obj);
1096
1097         if (return_value.error_code || return_value.ec_return_value)
1098                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1099                         device,
1100                         return_value.error_code,
1101                         return_value.ec_return_value);
1102         else
1103                 *value = !!(return_value.devices & device);
1104
1105         return status;
1106 }
1107
1108 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1109 {
1110         u16 device;
1111
1112         switch (cap) {
1113         case ACER_CAP_WIRELESS:
1114                 device = ACER_WMID3_GDS_WIRELESS;
1115                 break;
1116         case ACER_CAP_BLUETOOTH:
1117                 device = ACER_WMID3_GDS_BLUETOOTH;
1118                 break;
1119         case ACER_CAP_THREEG:
1120                 device = ACER_WMID3_GDS_THREEG;
1121                 break;
1122         default:
1123                 return AE_ERROR;
1124         }
1125         return wmid3_get_device_status(value, device);
1126 }
1127
1128 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1129 {
1130         struct wmid3_gds_return_value return_value;
1131         acpi_status status;
1132         union acpi_object *obj;
1133         u16 devices;
1134         struct wmid3_gds_get_input_param get_params = {
1135                 .function_num = 0x1,
1136                 .hotkey_number = commun_fn_key_number,
1137                 .devices = commun_func_bitmap,
1138         };
1139         struct acpi_buffer get_input = {
1140                 sizeof(struct wmid3_gds_get_input_param),
1141                 &get_params
1142         };
1143         struct wmid3_gds_set_input_param set_params = {
1144                 .function_num = 0x2,
1145                 .hotkey_number = commun_fn_key_number,
1146                 .devices = commun_func_bitmap,
1147         };
1148         struct acpi_buffer set_input = {
1149                 sizeof(struct wmid3_gds_set_input_param),
1150                 &set_params
1151         };
1152         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1153         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1154
1155         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1156         if (ACPI_FAILURE(status))
1157                 return status;
1158
1159         obj = output.pointer;
1160
1161         if (!obj)
1162                 return AE_ERROR;
1163         else if (obj->type != ACPI_TYPE_BUFFER) {
1164                 kfree(obj);
1165                 return AE_ERROR;
1166         }
1167         if (obj->buffer.length != 8) {
1168                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1169                 kfree(obj);
1170                 return AE_ERROR;
1171         }
1172
1173         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1174         kfree(obj);
1175
1176         if (return_value.error_code || return_value.ec_return_value) {
1177                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1178                         return_value.error_code,
1179                         return_value.ec_return_value);
1180                 return status;
1181         }
1182
1183         devices = return_value.devices;
1184         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1185
1186         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1187         if (ACPI_FAILURE(status))
1188                 return status;
1189
1190         obj = output2.pointer;
1191
1192         if (!obj)
1193                 return AE_ERROR;
1194         else if (obj->type != ACPI_TYPE_BUFFER) {
1195                 kfree(obj);
1196                 return AE_ERROR;
1197         }
1198         if (obj->buffer.length != 4) {
1199                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1200                 kfree(obj);
1201                 return AE_ERROR;
1202         }
1203
1204         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1205         kfree(obj);
1206
1207         if (return_value.error_code || return_value.ec_return_value)
1208                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1209                         return_value.error_code,
1210                         return_value.ec_return_value);
1211
1212         return status;
1213 }
1214
1215 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1216 {
1217         u16 device;
1218
1219         switch (cap) {
1220         case ACER_CAP_WIRELESS:
1221                 device = ACER_WMID3_GDS_WIRELESS;
1222                 break;
1223         case ACER_CAP_BLUETOOTH:
1224                 device = ACER_WMID3_GDS_BLUETOOTH;
1225                 break;
1226         case ACER_CAP_THREEG:
1227                 device = ACER_WMID3_GDS_THREEG;
1228                 break;
1229         default:
1230                 return AE_ERROR;
1231         }
1232         return wmid3_set_device_status(value, device);
1233 }
1234
1235 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1236 {
1237         struct hotkey_function_type_aa *type_aa;
1238
1239         /* We are looking for OEM-specific Type AAh */
1240         if (header->type != 0xAA)
1241                 return;
1242
1243         has_type_aa = true;
1244         type_aa = (struct hotkey_function_type_aa *) header;
1245
1246         pr_info("Function bitmap for Communication Button: 0x%x\n",
1247                 type_aa->commun_func_bitmap);
1248         commun_func_bitmap = type_aa->commun_func_bitmap;
1249
1250         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1251                 interface->capability |= ACER_CAP_WIRELESS;
1252         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1253                 interface->capability |= ACER_CAP_THREEG;
1254         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1255                 interface->capability |= ACER_CAP_BLUETOOTH;
1256         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_RFBTN) {
1257                 interface->capability |= ACER_CAP_RFBTN;
1258                 commun_func_bitmap &= ~ACER_WMID3_GDS_RFBTN;
1259         }
1260
1261         commun_fn_key_number = type_aa->commun_fn_key_number;
1262 }
1263
1264 static acpi_status __init WMID_set_capabilities(void)
1265 {
1266         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1267         union acpi_object *obj;
1268         acpi_status status;
1269         u32 devices;
1270
1271         status = wmi_query_block(WMID_GUID2, 0, &out);
1272         if (ACPI_FAILURE(status))
1273                 return status;
1274
1275         obj = (union acpi_object *) out.pointer;
1276         if (obj) {
1277                 if (obj->type == ACPI_TYPE_BUFFER &&
1278                         (obj->buffer.length == sizeof(u32) ||
1279                         obj->buffer.length == sizeof(u64))) {
1280                         devices = *((u32 *) obj->buffer.pointer);
1281                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1282                         devices = (u32) obj->integer.value;
1283                 } else {
1284                         kfree(out.pointer);
1285                         return AE_ERROR;
1286                 }
1287         } else {
1288                 kfree(out.pointer);
1289                 return AE_ERROR;
1290         }
1291
1292         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1293         if (devices & 0x07)
1294                 interface->capability |= ACER_CAP_WIRELESS;
1295         if (devices & 0x40)
1296                 interface->capability |= ACER_CAP_THREEG;
1297         if (devices & 0x10)
1298                 interface->capability |= ACER_CAP_BLUETOOTH;
1299
1300         if (!(devices & 0x20))
1301                 max_brightness = 0x9;
1302
1303         kfree(out.pointer);
1304         return status;
1305 }
1306
1307 static struct wmi_interface wmid_interface = {
1308         .type = ACER_WMID,
1309 };
1310
1311 static struct wmi_interface wmid_v2_interface = {
1312         .type = ACER_WMID_v2,
1313 };
1314
1315 /*
1316  * Generic Device (interface-independent)
1317  */
1318
1319 static acpi_status get_u32(u32 *value, u32 cap)
1320 {
1321         acpi_status status = AE_ERROR;
1322
1323         switch (interface->type) {
1324         case ACER_AMW0:
1325                 status = AMW0_get_u32(value, cap);
1326                 break;
1327         case ACER_AMW0_V2:
1328                 if (cap == ACER_CAP_MAILLED) {
1329                         status = AMW0_get_u32(value, cap);
1330                         break;
1331                 }
1332                 fallthrough;
1333         case ACER_WMID:
1334                 status = WMID_get_u32(value, cap);
1335                 break;
1336         case ACER_WMID_v2:
1337                 if (cap & (ACER_CAP_WIRELESS |
1338                            ACER_CAP_BLUETOOTH |
1339                            ACER_CAP_THREEG))
1340                         status = wmid_v2_get_u32(value, cap);
1341                 else if (wmi_has_guid(WMID_GUID2))
1342                         status = WMID_get_u32(value, cap);
1343                 break;
1344         }
1345
1346         return status;
1347 }
1348
1349 static acpi_status set_u32(u32 value, u32 cap)
1350 {
1351         acpi_status status;
1352
1353         if (interface->capability & cap) {
1354                 switch (interface->type) {
1355                 case ACER_AMW0:
1356                         return AMW0_set_u32(value, cap);
1357                 case ACER_AMW0_V2:
1358                         if (cap == ACER_CAP_MAILLED)
1359                                 return AMW0_set_u32(value, cap);
1360
1361                         /*
1362                          * On some models, some WMID methods don't toggle
1363                          * properly. For those cases, we want to run the AMW0
1364                          * method afterwards to be certain we've really toggled
1365                          * the device state.
1366                          */
1367                         if (cap == ACER_CAP_WIRELESS ||
1368                                 cap == ACER_CAP_BLUETOOTH) {
1369                                 status = WMID_set_u32(value, cap);
1370                                 if (ACPI_FAILURE(status))
1371                                         return status;
1372
1373                                 return AMW0_set_u32(value, cap);
1374                         }
1375                         fallthrough;
1376                 case ACER_WMID:
1377                         return WMID_set_u32(value, cap);
1378                 case ACER_WMID_v2:
1379                         if (cap & (ACER_CAP_WIRELESS |
1380                                    ACER_CAP_BLUETOOTH |
1381                                    ACER_CAP_THREEG))
1382                                 return wmid_v2_set_u32(value, cap);
1383                         else if (wmi_has_guid(WMID_GUID2))
1384                                 return WMID_set_u32(value, cap);
1385                         fallthrough;
1386                 default:
1387                         return AE_BAD_PARAMETER;
1388                 }
1389         }
1390         return AE_BAD_PARAMETER;
1391 }
1392
1393 static void __init acer_commandline_init(void)
1394 {
1395         /*
1396          * These will all fail silently if the value given is invalid, or the
1397          * capability isn't available on the given interface
1398          */
1399         if (mailled >= 0)
1400                 set_u32(mailled, ACER_CAP_MAILLED);
1401         if (!has_type_aa && threeg >= 0)
1402                 set_u32(threeg, ACER_CAP_THREEG);
1403         if (brightness >= 0)
1404                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1405 }
1406
1407 /*
1408  * LED device (Mail LED only, no other LEDs known yet)
1409  */
1410 static void mail_led_set(struct led_classdev *led_cdev,
1411 enum led_brightness value)
1412 {
1413         set_u32(value, ACER_CAP_MAILLED);
1414 }
1415
1416 static struct led_classdev mail_led = {
1417         .name = "acer-wmi::mail",
1418         .brightness_set = mail_led_set,
1419 };
1420
1421 static int acer_led_init(struct device *dev)
1422 {
1423         return led_classdev_register(dev, &mail_led);
1424 }
1425
1426 static void acer_led_exit(void)
1427 {
1428         set_u32(LED_OFF, ACER_CAP_MAILLED);
1429         led_classdev_unregister(&mail_led);
1430 }
1431
1432 /*
1433  * Backlight device
1434  */
1435 static struct backlight_device *acer_backlight_device;
1436
1437 static int read_brightness(struct backlight_device *bd)
1438 {
1439         u32 value;
1440         get_u32(&value, ACER_CAP_BRIGHTNESS);
1441         return value;
1442 }
1443
1444 static int update_bl_status(struct backlight_device *bd)
1445 {
1446         int intensity = bd->props.brightness;
1447
1448         if (bd->props.power != FB_BLANK_UNBLANK)
1449                 intensity = 0;
1450         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1451                 intensity = 0;
1452
1453         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1454
1455         return 0;
1456 }
1457
1458 static const struct backlight_ops acer_bl_ops = {
1459         .get_brightness = read_brightness,
1460         .update_status = update_bl_status,
1461 };
1462
1463 static int acer_backlight_init(struct device *dev)
1464 {
1465         struct backlight_properties props;
1466         struct backlight_device *bd;
1467
1468         memset(&props, 0, sizeof(struct backlight_properties));
1469         props.type = BACKLIGHT_PLATFORM;
1470         props.max_brightness = max_brightness;
1471         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1472                                        &props);
1473         if (IS_ERR(bd)) {
1474                 pr_err("Could not register Acer backlight device\n");
1475                 acer_backlight_device = NULL;
1476                 return PTR_ERR(bd);
1477         }
1478
1479         acer_backlight_device = bd;
1480
1481         bd->props.power = FB_BLANK_UNBLANK;
1482         bd->props.brightness = read_brightness(bd);
1483         backlight_update_status(bd);
1484         return 0;
1485 }
1486
1487 static void acer_backlight_exit(void)
1488 {
1489         backlight_device_unregister(acer_backlight_device);
1490 }
1491
1492 /*
1493  * Accelerometer device
1494  */
1495 static acpi_handle gsensor_handle;
1496
1497 static int acer_gsensor_init(void)
1498 {
1499         acpi_status status;
1500         struct acpi_buffer output;
1501         union acpi_object out_obj;
1502
1503         output.length = sizeof(out_obj);
1504         output.pointer = &out_obj;
1505         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1506         if (ACPI_FAILURE(status))
1507                 return -1;
1508
1509         return 0;
1510 }
1511
1512 static int acer_gsensor_open(struct input_dev *input)
1513 {
1514         return acer_gsensor_init();
1515 }
1516
1517 static int acer_gsensor_event(void)
1518 {
1519         acpi_status status;
1520         struct acpi_buffer output;
1521         union acpi_object out_obj[5];
1522
1523         if (!has_cap(ACER_CAP_ACCEL))
1524                 return -1;
1525
1526         output.length = sizeof(out_obj);
1527         output.pointer = out_obj;
1528
1529         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1530         if (ACPI_FAILURE(status))
1531                 return -1;
1532
1533         if (out_obj->package.count != 4)
1534                 return -1;
1535
1536         input_report_abs(acer_wmi_accel_dev, ABS_X,
1537                 (s16)out_obj->package.elements[0].integer.value);
1538         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1539                 (s16)out_obj->package.elements[1].integer.value);
1540         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1541                 (s16)out_obj->package.elements[2].integer.value);
1542         input_sync(acer_wmi_accel_dev);
1543         return 0;
1544 }
1545
1546 /*
1547  * Rfkill devices
1548  */
1549 static void acer_rfkill_update(struct work_struct *ignored);
1550 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1551 static void acer_rfkill_update(struct work_struct *ignored)
1552 {
1553         u32 state;
1554         acpi_status status;
1555
1556         if (has_cap(ACER_CAP_WIRELESS)) {
1557                 status = get_u32(&state, ACER_CAP_WIRELESS);
1558                 if (ACPI_SUCCESS(status)) {
1559                         if (quirks->wireless == 3)
1560                                 rfkill_set_hw_state(wireless_rfkill, !state);
1561                         else
1562                                 rfkill_set_sw_state(wireless_rfkill, !state);
1563                 }
1564         }
1565
1566         if (has_cap(ACER_CAP_BLUETOOTH)) {
1567                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1568                 if (ACPI_SUCCESS(status))
1569                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1570         }
1571
1572         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1573                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1574                 if (ACPI_SUCCESS(status))
1575                         rfkill_set_sw_state(threeg_rfkill, !state);
1576         }
1577
1578         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1579 }
1580
1581 static int acer_rfkill_set(void *data, bool blocked)
1582 {
1583         acpi_status status;
1584         u32 cap = (unsigned long)data;
1585
1586         if (rfkill_inited) {
1587                 status = set_u32(!blocked, cap);
1588                 if (ACPI_FAILURE(status))
1589                         return -ENODEV;
1590         }
1591
1592         return 0;
1593 }
1594
1595 static const struct rfkill_ops acer_rfkill_ops = {
1596         .set_block = acer_rfkill_set,
1597 };
1598
1599 static struct rfkill *acer_rfkill_register(struct device *dev,
1600                                            enum rfkill_type type,
1601                                            char *name, u32 cap)
1602 {
1603         int err;
1604         struct rfkill *rfkill_dev;
1605         u32 state;
1606         acpi_status status;
1607
1608         rfkill_dev = rfkill_alloc(name, dev, type,
1609                                   &acer_rfkill_ops,
1610                                   (void *)(unsigned long)cap);
1611         if (!rfkill_dev)
1612                 return ERR_PTR(-ENOMEM);
1613
1614         status = get_u32(&state, cap);
1615
1616         err = rfkill_register(rfkill_dev);
1617         if (err) {
1618                 rfkill_destroy(rfkill_dev);
1619                 return ERR_PTR(err);
1620         }
1621
1622         if (ACPI_SUCCESS(status))
1623                 rfkill_set_sw_state(rfkill_dev, !state);
1624
1625         return rfkill_dev;
1626 }
1627
1628 static int acer_rfkill_init(struct device *dev)
1629 {
1630         int err;
1631
1632         if (has_cap(ACER_CAP_WIRELESS)) {
1633                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1634                         "acer-wireless", ACER_CAP_WIRELESS);
1635                 if (IS_ERR(wireless_rfkill)) {
1636                         err = PTR_ERR(wireless_rfkill);
1637                         goto error_wireless;
1638                 }
1639         }
1640
1641         if (has_cap(ACER_CAP_BLUETOOTH)) {
1642                 bluetooth_rfkill = acer_rfkill_register(dev,
1643                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1644                         ACER_CAP_BLUETOOTH);
1645                 if (IS_ERR(bluetooth_rfkill)) {
1646                         err = PTR_ERR(bluetooth_rfkill);
1647                         goto error_bluetooth;
1648                 }
1649         }
1650
1651         if (has_cap(ACER_CAP_THREEG)) {
1652                 threeg_rfkill = acer_rfkill_register(dev,
1653                         RFKILL_TYPE_WWAN, "acer-threeg",
1654                         ACER_CAP_THREEG);
1655                 if (IS_ERR(threeg_rfkill)) {
1656                         err = PTR_ERR(threeg_rfkill);
1657                         goto error_threeg;
1658                 }
1659         }
1660
1661         rfkill_inited = true;
1662
1663         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1664             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1665                 schedule_delayed_work(&acer_rfkill_work,
1666                         round_jiffies_relative(HZ));
1667
1668         return 0;
1669
1670 error_threeg:
1671         if (has_cap(ACER_CAP_BLUETOOTH)) {
1672                 rfkill_unregister(bluetooth_rfkill);
1673                 rfkill_destroy(bluetooth_rfkill);
1674         }
1675 error_bluetooth:
1676         if (has_cap(ACER_CAP_WIRELESS)) {
1677                 rfkill_unregister(wireless_rfkill);
1678                 rfkill_destroy(wireless_rfkill);
1679         }
1680 error_wireless:
1681         return err;
1682 }
1683
1684 static void acer_rfkill_exit(void)
1685 {
1686         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1687             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1688                 cancel_delayed_work_sync(&acer_rfkill_work);
1689
1690         if (has_cap(ACER_CAP_WIRELESS)) {
1691                 rfkill_unregister(wireless_rfkill);
1692                 rfkill_destroy(wireless_rfkill);
1693         }
1694
1695         if (has_cap(ACER_CAP_BLUETOOTH)) {
1696                 rfkill_unregister(bluetooth_rfkill);
1697                 rfkill_destroy(bluetooth_rfkill);
1698         }
1699
1700         if (has_cap(ACER_CAP_THREEG)) {
1701                 rfkill_unregister(threeg_rfkill);
1702                 rfkill_destroy(threeg_rfkill);
1703         }
1704         return;
1705 }
1706
1707 static void acer_wmi_notify(u32 value, void *context)
1708 {
1709         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1710         union acpi_object *obj;
1711         struct event_return_value return_value;
1712         acpi_status status;
1713         u16 device_state;
1714         const struct key_entry *key;
1715         u32 scancode;
1716
1717         status = wmi_get_event_data(value, &response);
1718         if (status != AE_OK) {
1719                 pr_warn("bad event status 0x%x\n", status);
1720                 return;
1721         }
1722
1723         obj = (union acpi_object *)response.pointer;
1724
1725         if (!obj)
1726                 return;
1727         if (obj->type != ACPI_TYPE_BUFFER) {
1728                 pr_warn("Unknown response received %d\n", obj->type);
1729                 kfree(obj);
1730                 return;
1731         }
1732         if (obj->buffer.length != 8) {
1733                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1734                 kfree(obj);
1735                 return;
1736         }
1737
1738         return_value = *((struct event_return_value *)obj->buffer.pointer);
1739         kfree(obj);
1740
1741         switch (return_value.function) {
1742         case WMID_HOTKEY_EVENT:
1743                 device_state = return_value.device_state;
1744                 pr_debug("device state: 0x%x\n", device_state);
1745
1746                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1747                                                         return_value.key_num);
1748                 if (!key) {
1749                         pr_warn("Unknown key number - 0x%x\n",
1750                                 return_value.key_num);
1751                 } else {
1752                         scancode = return_value.key_num;
1753                         switch (key->keycode) {
1754                         case KEY_WLAN:
1755                         case KEY_BLUETOOTH:
1756                                 if (has_cap(ACER_CAP_WIRELESS))
1757                                         rfkill_set_sw_state(wireless_rfkill,
1758                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1759                                 if (has_cap(ACER_CAP_THREEG))
1760                                         rfkill_set_sw_state(threeg_rfkill,
1761                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1762                                 if (has_cap(ACER_CAP_BLUETOOTH))
1763                                         rfkill_set_sw_state(bluetooth_rfkill,
1764                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1765                                 break;
1766                         case KEY_TOUCHPAD_TOGGLE:
1767                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1768                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1769                         }
1770                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1771                 }
1772                 break;
1773         case WMID_ACCEL_EVENT:
1774                 acer_gsensor_event();
1775                 break;
1776         default:
1777                 pr_warn("Unknown function number - %d - %d\n",
1778                         return_value.function, return_value.key_num);
1779                 break;
1780         }
1781 }
1782
1783 static acpi_status __init
1784 wmid3_set_function_mode(struct func_input_params *params,
1785                         struct func_return_value *return_value)
1786 {
1787         acpi_status status;
1788         union acpi_object *obj;
1789
1790         struct acpi_buffer input = { sizeof(struct func_input_params), params };
1791         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1792
1793         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1794         if (ACPI_FAILURE(status))
1795                 return status;
1796
1797         obj = output.pointer;
1798
1799         if (!obj)
1800                 return AE_ERROR;
1801         else if (obj->type != ACPI_TYPE_BUFFER) {
1802                 kfree(obj);
1803                 return AE_ERROR;
1804         }
1805         if (obj->buffer.length != 4) {
1806                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1807                 kfree(obj);
1808                 return AE_ERROR;
1809         }
1810
1811         *return_value = *((struct func_return_value *)obj->buffer.pointer);
1812         kfree(obj);
1813
1814         return status;
1815 }
1816
1817 static int __init acer_wmi_enable_ec_raw(void)
1818 {
1819         struct func_return_value return_value;
1820         acpi_status status;
1821         struct func_input_params params = {
1822                 .function_num = 0x1,
1823                 .commun_devices = 0xFFFF,
1824                 .devices = 0xFFFF,
1825                 .app_status = 0x00,             /* Launch Manager Deactive */
1826                 .app_mask = 0x01,
1827         };
1828
1829         status = wmid3_set_function_mode(&params, &return_value);
1830
1831         if (return_value.error_code || return_value.ec_return_value)
1832                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1833                         return_value.error_code,
1834                         return_value.ec_return_value);
1835         else
1836                 pr_info("Enabled EC raw mode\n");
1837
1838         return status;
1839 }
1840
1841 static int __init acer_wmi_enable_lm(void)
1842 {
1843         struct func_return_value return_value;
1844         acpi_status status;
1845         struct func_input_params params = {
1846                 .function_num = 0x1,
1847                 .commun_devices = 0xFFFF,
1848                 .devices = 0xFFFF,
1849                 .app_status = 0x01,            /* Launch Manager Active */
1850                 .app_mask = 0x01,
1851         };
1852
1853         status = wmid3_set_function_mode(&params, &return_value);
1854
1855         if (return_value.error_code || return_value.ec_return_value)
1856                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1857                         return_value.error_code,
1858                         return_value.ec_return_value);
1859
1860         return status;
1861 }
1862
1863 static int __init acer_wmi_enable_rf_button(void)
1864 {
1865         struct func_return_value return_value;
1866         acpi_status status;
1867         struct func_input_params params = {
1868                 .function_num = 0x1,
1869                 .commun_devices = 0xFFFF,
1870                 .devices = 0xFFFF,
1871                 .app_status = 0x10,            /* RF Button Active */
1872                 .app_mask = 0x10,
1873         };
1874
1875         status = wmid3_set_function_mode(&params, &return_value);
1876
1877         if (return_value.error_code || return_value.ec_return_value)
1878                 pr_warn("Enabling RF Button failed: 0x%x - 0x%x\n",
1879                         return_value.error_code,
1880                         return_value.ec_return_value);
1881
1882         return status;
1883 }
1884
1885 static int __init acer_wmi_accel_setup(void)
1886 {
1887         struct acpi_device *adev;
1888         int err;
1889
1890         adev = acpi_dev_get_first_match_dev("BST0001", NULL, -1);
1891         if (!adev)
1892                 return -ENODEV;
1893
1894         gsensor_handle = acpi_device_handle(adev);
1895         acpi_dev_put(adev);
1896
1897         interface->capability |= ACER_CAP_ACCEL;
1898
1899         acer_wmi_accel_dev = input_allocate_device();
1900         if (!acer_wmi_accel_dev)
1901                 return -ENOMEM;
1902
1903         acer_wmi_accel_dev->open = acer_gsensor_open;
1904
1905         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1906         acer_wmi_accel_dev->phys = "wmi/input1";
1907         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1908         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1909         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1910         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1911         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1912
1913         err = input_register_device(acer_wmi_accel_dev);
1914         if (err)
1915                 goto err_free_dev;
1916
1917         return 0;
1918
1919 err_free_dev:
1920         input_free_device(acer_wmi_accel_dev);
1921         return err;
1922 }
1923
1924 static void acer_wmi_accel_destroy(void)
1925 {
1926         input_unregister_device(acer_wmi_accel_dev);
1927 }
1928
1929 static int __init acer_wmi_input_setup(void)
1930 {
1931         acpi_status status;
1932         int err;
1933
1934         acer_wmi_input_dev = input_allocate_device();
1935         if (!acer_wmi_input_dev)
1936                 return -ENOMEM;
1937
1938         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1939         acer_wmi_input_dev->phys = "wmi/input0";
1940         acer_wmi_input_dev->id.bustype = BUS_HOST;
1941
1942         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1943         if (err)
1944                 goto err_free_dev;
1945
1946         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1947                                                 acer_wmi_notify, NULL);
1948         if (ACPI_FAILURE(status)) {
1949                 err = -EIO;
1950                 goto err_free_dev;
1951         }
1952
1953         err = input_register_device(acer_wmi_input_dev);
1954         if (err)
1955                 goto err_uninstall_notifier;
1956
1957         return 0;
1958
1959 err_uninstall_notifier:
1960         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1961 err_free_dev:
1962         input_free_device(acer_wmi_input_dev);
1963         return err;
1964 }
1965
1966 static void acer_wmi_input_destroy(void)
1967 {
1968         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1969         input_unregister_device(acer_wmi_input_dev);
1970 }
1971
1972 /*
1973  * debugfs functions
1974  */
1975 static u32 get_wmid_devices(void)
1976 {
1977         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1978         union acpi_object *obj;
1979         acpi_status status;
1980         u32 devices = 0;
1981
1982         status = wmi_query_block(WMID_GUID2, 0, &out);
1983         if (ACPI_FAILURE(status))
1984                 return 0;
1985
1986         obj = (union acpi_object *) out.pointer;
1987         if (obj) {
1988                 if (obj->type == ACPI_TYPE_BUFFER &&
1989                         (obj->buffer.length == sizeof(u32) ||
1990                         obj->buffer.length == sizeof(u64))) {
1991                         devices = *((u32 *) obj->buffer.pointer);
1992                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1993                         devices = (u32) obj->integer.value;
1994                 }
1995         }
1996
1997         kfree(out.pointer);
1998         return devices;
1999 }
2000
2001 /*
2002  * Platform device
2003  */
2004 static int acer_platform_probe(struct platform_device *device)
2005 {
2006         int err;
2007
2008         if (has_cap(ACER_CAP_MAILLED)) {
2009                 err = acer_led_init(&device->dev);
2010                 if (err)
2011                         goto error_mailled;
2012         }
2013
2014         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2015                 err = acer_backlight_init(&device->dev);
2016                 if (err)
2017                         goto error_brightness;
2018         }
2019
2020         err = acer_rfkill_init(&device->dev);
2021         if (err)
2022                 goto error_rfkill;
2023
2024         return err;
2025
2026 error_rfkill:
2027         if (has_cap(ACER_CAP_BRIGHTNESS))
2028                 acer_backlight_exit();
2029 error_brightness:
2030         if (has_cap(ACER_CAP_MAILLED))
2031                 acer_led_exit();
2032 error_mailled:
2033         return err;
2034 }
2035
2036 static int acer_platform_remove(struct platform_device *device)
2037 {
2038         if (has_cap(ACER_CAP_MAILLED))
2039                 acer_led_exit();
2040         if (has_cap(ACER_CAP_BRIGHTNESS))
2041                 acer_backlight_exit();
2042
2043         acer_rfkill_exit();
2044         return 0;
2045 }
2046
2047 #ifdef CONFIG_PM_SLEEP
2048 static int acer_suspend(struct device *dev)
2049 {
2050         u32 value;
2051         struct acer_data *data = &interface->data;
2052
2053         if (!data)
2054                 return -ENOMEM;
2055
2056         if (has_cap(ACER_CAP_MAILLED)) {
2057                 get_u32(&value, ACER_CAP_MAILLED);
2058                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2059                 data->mailled = value;
2060         }
2061
2062         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2063                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2064                 data->brightness = value;
2065         }
2066
2067         return 0;
2068 }
2069
2070 static int acer_resume(struct device *dev)
2071 {
2072         struct acer_data *data = &interface->data;
2073
2074         if (!data)
2075                 return -ENOMEM;
2076
2077         if (has_cap(ACER_CAP_MAILLED))
2078                 set_u32(data->mailled, ACER_CAP_MAILLED);
2079
2080         if (has_cap(ACER_CAP_BRIGHTNESS))
2081                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2082
2083         if (has_cap(ACER_CAP_ACCEL))
2084                 acer_gsensor_init();
2085
2086         return 0;
2087 }
2088 #else
2089 #define acer_suspend    NULL
2090 #define acer_resume     NULL
2091 #endif
2092
2093 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2094
2095 static void acer_platform_shutdown(struct platform_device *device)
2096 {
2097         struct acer_data *data = &interface->data;
2098
2099         if (!data)
2100                 return;
2101
2102         if (has_cap(ACER_CAP_MAILLED))
2103                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2104 }
2105
2106 static struct platform_driver acer_platform_driver = {
2107         .driver = {
2108                 .name = "acer-wmi",
2109                 .pm = &acer_pm,
2110         },
2111         .probe = acer_platform_probe,
2112         .remove = acer_platform_remove,
2113         .shutdown = acer_platform_shutdown,
2114 };
2115
2116 static struct platform_device *acer_platform_device;
2117
2118 static void remove_debugfs(void)
2119 {
2120         debugfs_remove_recursive(interface->debug.root);
2121 }
2122
2123 static void __init create_debugfs(void)
2124 {
2125         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2126
2127         debugfs_create_u32("devices", S_IRUGO, interface->debug.root,
2128                            &interface->debug.wmid_devices);
2129 }
2130
2131 static int __init acer_wmi_init(void)
2132 {
2133         int err;
2134
2135         pr_info("Acer Laptop ACPI-WMI Extras\n");
2136
2137         if (dmi_check_system(acer_blacklist)) {
2138                 pr_info("Blacklisted hardware detected - not loading\n");
2139                 return -ENODEV;
2140         }
2141
2142         find_quirks();
2143
2144         /*
2145          * The AMW0_GUID1 wmi is not only found on Acer family but also other
2146          * machines like Lenovo, Fujitsu and Medion. In the past days,
2147          * acer-wmi driver handled those non-Acer machines by quirks list.
2148          * But actually acer-wmi driver was loaded on any machines that have
2149          * AMW0_GUID1. This behavior is strange because those machines should
2150          * be supported by appropriate wmi drivers. e.g. fujitsu-laptop,
2151          * ideapad-laptop. So, here checks the machine that has AMW0_GUID1
2152          * should be in Acer/Gateway/Packard Bell white list, or it's already
2153          * in the past quirk list.
2154          */
2155         if (wmi_has_guid(AMW0_GUID1) &&
2156             !dmi_check_system(amw0_whitelist) &&
2157             quirks == &quirk_unknown) {
2158                 pr_debug("Unsupported machine has AMW0_GUID1, unable to load\n");
2159                 return -ENODEV;
2160         }
2161
2162         /*
2163          * Detect which ACPI-WMI interface we're using.
2164          */
2165         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2166                 interface = &AMW0_V2_interface;
2167
2168         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2169                 interface = &wmid_interface;
2170
2171         if (wmi_has_guid(WMID_GUID3))
2172                 interface = &wmid_v2_interface;
2173
2174         if (interface)
2175                 dmi_walk(type_aa_dmi_decode, NULL);
2176
2177         if (wmi_has_guid(WMID_GUID2) && interface) {
2178                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2179                         pr_err("Unable to detect available WMID devices\n");
2180                         return -ENODEV;
2181                 }
2182                 /* WMID always provides brightness methods */
2183                 interface->capability |= ACER_CAP_BRIGHTNESS;
2184         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2185                 pr_err("No WMID device detection method found\n");
2186                 return -ENODEV;
2187         }
2188
2189         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2190                 interface = &AMW0_interface;
2191
2192                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2193                         pr_err("Unable to detect available AMW0 devices\n");
2194                         return -ENODEV;
2195                 }
2196         }
2197
2198         if (wmi_has_guid(AMW0_GUID1))
2199                 AMW0_find_mailled();
2200
2201         if (!interface) {
2202                 pr_err("No or unsupported WMI interface, unable to load\n");
2203                 return -ENODEV;
2204         }
2205
2206         set_quirks();
2207
2208         if (dmi_check_system(video_vendor_dmi_table))
2209                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2210
2211         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2212                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2213
2214         if (wmi_has_guid(WMID_GUID3)) {
2215                 if (ACPI_FAILURE(acer_wmi_enable_rf_button()))
2216                         pr_warn("Cannot enable RF Button Driver\n");
2217
2218                 if (ec_raw_mode) {
2219                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2220                                 pr_err("Cannot enable EC raw mode\n");
2221                                 return -ENODEV;
2222                         }
2223                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2224                         pr_err("Cannot enable Launch Manager mode\n");
2225                         return -ENODEV;
2226                 }
2227         } else if (ec_raw_mode) {
2228                 pr_info("No WMID EC raw mode enable method\n");
2229         }
2230
2231         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2232                 err = acer_wmi_input_setup();
2233                 if (err)
2234                         return err;
2235                 err = acer_wmi_accel_setup();
2236                 if (err && err != -ENODEV)
2237                         pr_warn("Cannot enable accelerometer\n");
2238         }
2239
2240         err = platform_driver_register(&acer_platform_driver);
2241         if (err) {
2242                 pr_err("Unable to register platform driver\n");
2243                 goto error_platform_register;
2244         }
2245
2246         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2247         if (!acer_platform_device) {
2248                 err = -ENOMEM;
2249                 goto error_device_alloc;
2250         }
2251
2252         err = platform_device_add(acer_platform_device);
2253         if (err)
2254                 goto error_device_add;
2255
2256         if (wmi_has_guid(WMID_GUID2)) {
2257                 interface->debug.wmid_devices = get_wmid_devices();
2258                 create_debugfs();
2259         }
2260
2261         /* Override any initial settings with values from the commandline */
2262         acer_commandline_init();
2263
2264         return 0;
2265
2266 error_device_add:
2267         platform_device_put(acer_platform_device);
2268 error_device_alloc:
2269         platform_driver_unregister(&acer_platform_driver);
2270 error_platform_register:
2271         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2272                 acer_wmi_input_destroy();
2273         if (has_cap(ACER_CAP_ACCEL))
2274                 acer_wmi_accel_destroy();
2275
2276         return err;
2277 }
2278
2279 static void __exit acer_wmi_exit(void)
2280 {
2281         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2282                 acer_wmi_input_destroy();
2283
2284         if (has_cap(ACER_CAP_ACCEL))
2285                 acer_wmi_accel_destroy();
2286
2287         remove_debugfs();
2288         platform_device_unregister(acer_platform_device);
2289         platform_driver_unregister(&acer_platform_driver);
2290
2291         pr_info("Acer Laptop WMI Extras unloaded\n");
2292         return;
2293 }
2294
2295 module_init(acer_wmi_init);
2296 module_exit(acer_wmi_exit);