drivers/platform/x86/acer-wmi.c

   1 /*
   2  *  Acer WMI Laptop Extras
   3  *
   4  *  Copyright (C) 2007-2009     Carlos Corbacho <carlos@strangeworlds.co.uk>
   5  *
   6  *  Based on acer_acpi:
   7  *    Copyright (C) 2005-2007   E.M. Smith
   8  *    Copyright (C) 2007-2008   Carlos Corbacho <cathectic@gmail.com>
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  26
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/init.h>
  30 #include <linux/types.h>
  31 #include <linux/dmi.h>
  32 #include <linux/fb.h>
  33 #include <linux/backlight.h>
  34 #include <linux/leds.h>
  35 #include <linux/platform_device.h>
  36 #include <linux/acpi.h>
  37 #include <linux/i8042.h>
  38 #include <linux/rfkill.h>
  39 #include <linux/workqueue.h>
  40 #include <linux/debugfs.h>
  41 #include <linux/slab.h>
  42 #include <linux/input.h>
  43 #include <linux/input/sparse-keymap.h>
  44
  45 #include <acpi/acpi_drivers.h>
  46 #include <acpi/video.h>
  47
  48 MODULE_AUTHOR("Carlos Corbacho");
  49 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
  50 MODULE_LICENSE("GPL");
  51
  52 /*
  53  * Magic Number
  54  * Meaning is unknown - this number is required for writing to ACPI for AMW0
  55  * (it's also used in acerhk when directly accessing the BIOS)
  56  */
  57 #define ACER_AMW0_WRITE 0x9610
  58
  59 /*
  60  * Bit masks for the AMW0 interface
  61  */
  62 #define ACER_AMW0_WIRELESS_MASK  0x35
  63 #define ACER_AMW0_BLUETOOTH_MASK 0x34
  64 #define ACER_AMW0_MAILLED_MASK   0x31
  65
  66 /*
  67  * Method IDs for WMID interface
  68  */
  69 #define ACER_WMID_GET_WIRELESS_METHODID         1
  70 #define ACER_WMID_GET_BLUETOOTH_METHODID        2
  71 #define ACER_WMID_GET_BRIGHTNESS_METHODID       3
  72 #define ACER_WMID_SET_WIRELESS_METHODID         4
  73 #define ACER_WMID_SET_BLUETOOTH_METHODID        5
  74 #define ACER_WMID_SET_BRIGHTNESS_METHODID       6
  75 #define ACER_WMID_GET_THREEG_METHODID           10
  76 #define ACER_WMID_SET_THREEG_METHODID           11
  77
  78 /*
  79  * Acer ACPI method GUIDs
  80  */
  81 #define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
  82 #define AMW0_GUID2              "431F16ED-0C2B-444C-B267-27DEB140CF9C"
  83 #define WMID_GUID1              "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
  84 #define WMID_GUID2              "95764E09-FB56-4E83-B31A-37761F60994A"
  85 #define WMID_GUID3              "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
  86
  87 /*
  88  * Acer ACPI event GUIDs
  89  */
  90 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
  91
  92 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
  93 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
  94 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
  95
  96 enum acer_wmi_event_ids {
  97         WMID_HOTKEY_EVENT = 0x1,
  98         WMID_ACCEL_EVENT = 0x5,
  99 };
 100
 101 static const struct key_entry acer_wmi_keymap[] = {
 102         {KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
 103         {KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
 104         {KE_KEY, 0x04, {KEY_WLAN} },     /* WiFi */
 105         {KE_KEY, 0x12, {KEY_BLUETOOTH} },       /* BT */
 106         {KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
 107         {KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
 108         {KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
 109         {KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
 110         {KE_KEY, 0x29, {KEY_PROG3} },    /* P_Key for TM8372 */
 111         {KE_IGNORE, 0x41, {KEY_MUTE} },
 112         {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
 113         {KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
 114         {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
 115         {KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
 116         {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
 117         {KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
 118         {KE_IGNORE, 0x45, {KEY_STOP} },
 119         {KE_IGNORE, 0x50, {KEY_STOP} },
 120         {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
 121         {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
 122         {KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
 123         {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
 124         {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 125         {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 126         {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
 127         {KE_IGNORE, 0x81, {KEY_SLEEP} },
 128         {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
 129         {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
 130         {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
 131         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 132         {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
 133         {KE_END, 0}
 134 };
 135
 136 static struct input_dev *acer_wmi_input_dev;
 137 static struct input_dev *acer_wmi_accel_dev;
 138
 139 struct event_return_value {
 140         u8 function;
 141         u8 key_num;
 142         u16 device_state;
 143         u32 reserved;
 144 } __attribute__((packed));
 145
 146 /*
 147  * GUID3 Get Device Status device flags
 148  */
 149 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 150 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 151 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 152 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 153 #define ACER_WMID3_GDS_TOUCHPAD         (1<<1)  /* Touchpad */
 154
 155 struct lm_input_params {
 156         u8 function_num;        /* Function Number */
 157         u16 commun_devices;     /* Communication type devices default status */
 158         u16 devices;            /* Other type devices default status */
 159         u8 lm_status;           /* Launch Manager Status */
 160         u16 reserved;
 161 } __attribute__((packed));
 162
 163 struct lm_return_value {
 164         u8 error_code;          /* Error Code */
 165         u8 ec_return_value;     /* EC Return Value */
 166         u16 reserved;
 167 } __attribute__((packed));
 168
 169 struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 170         u8 function_num;        /* Function Number */
 171         u8 hotkey_number;       /* Hotkey Number */
 172         u16 devices;            /* Set Device */
 173         u8 volume_value;        /* Volume Value */
 174 } __attribute__((packed));
 175
 176 struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 177         u8 function_num;        /* Function Number */
 178         u8 hotkey_number;       /* Hotkey Number */
 179         u16 devices;            /* Get Device */
 180 } __attribute__((packed));
 181
 182 struct wmid3_gds_return_value { /* Get Device Status return value*/
 183         u8 error_code;          /* Error Code */
 184         u8 ec_return_value;     /* EC Return Value */
 185         u16 devices;            /* Current Device Status */
 186         u32 reserved;
 187 } __attribute__((packed));
 188
 189 struct hotkey_function_type_aa {
 190         u8 type;
 191         u8 length;
 192         u16 handle;
 193         u16 commun_func_bitmap;
 194         u16 application_func_bitmap;
 195         u16 media_func_bitmap;
 196         u16 display_func_bitmap;
 197         u16 others_func_bitmap;
 198         u8 commun_fn_key_number;
 199 } __attribute__((packed));
 200
 201 /*
 202  * Interface capability flags
 203  */
 204 #define ACER_CAP_MAILLED                (1<<0)
 205 #define ACER_CAP_WIRELESS               (1<<1)
 206 #define ACER_CAP_BLUETOOTH              (1<<2)
 207 #define ACER_CAP_BRIGHTNESS             (1<<3)
 208 #define ACER_CAP_THREEG                 (1<<4)
 209 #define ACER_CAP_ACCEL                  (1<<5)
 210 #define ACER_CAP_ANY                    (0xFFFFFFFF)
 211
 212 /*
 213  * Interface type flags
 214  */
 215 enum interface_flags {
 216         ACER_AMW0,
 217         ACER_AMW0_V2,
 218         ACER_WMID,
 219         ACER_WMID_v2,
 220 };
 221
 222 #define ACER_DEFAULT_WIRELESS  0
 223 #define ACER_DEFAULT_BLUETOOTH 0
 224 #define ACER_DEFAULT_MAILLED   0
 225 #define ACER_DEFAULT_THREEG    0
 226
 227 static int max_brightness = 0xF;
 228
 229 static int mailled = -1;
 230 static int brightness = -1;
 231 static int threeg = -1;
 232 static int force_series;
 233 static bool ec_raw_mode;
 234 static bool has_type_aa;
 235 static u16 commun_func_bitmap;
 236 static u8 commun_fn_key_number;
 237
 238 module_param(mailled, int, 0444);
 239 module_param(brightness, int, 0444);
 240 module_param(threeg, int, 0444);
 241 module_param(force_series, int, 0444);
 242 module_param(ec_raw_mode, bool, 0444);
 243 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 244 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 245 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 246 MODULE_PARM_DESC(force_series, "Force a different laptop series");
 247 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 248
 249 struct acer_data {
 250         int mailled;
 251         int threeg;
 252         int brightness;
 253 };
 254
 255 struct acer_debug {
 256         struct dentry *root;
 257         struct dentry *devices;
 258         u32 wmid_devices;
 259 };
 260
 261 static struct rfkill *wireless_rfkill;
 262 static struct rfkill *bluetooth_rfkill;
 263 static struct rfkill *threeg_rfkill;
 264 static bool rfkill_inited;
 265
 266 /* Each low-level interface must define at least some of the following */
 267 struct wmi_interface {
 268         /* The WMI device type */
 269         u32 type;
 270
 271         /* The capabilities this interface provides */
 272         u32 capability;
 273
 274         /* Private data for the current interface */
 275         struct acer_data data;
 276
 277         /* debugfs entries associated with this interface */
 278         struct acer_debug debug;
 279 };
 280
 281 /* The static interface pointer, points to the currently detected interface */
 282 static struct wmi_interface *interface;
 283
 284 /*
 285  * Embedded Controller quirks
 286  * Some laptops require us to directly access the EC to either enable or query
 287  * features that are not available through WMI.
 288  */
 289
 290 struct quirk_entry {
 291         u8 wireless;
 292         u8 mailled;
 293         s8 brightness;
 294         u8 bluetooth;
 295 };
 296
 297 static struct quirk_entry *quirks;
 298
 299 static void set_quirks(void)
 300 {
 301         if (!interface)
 302                 return;
 303
 304         if (quirks->mailled)
 305                 interface->capability |= ACER_CAP_MAILLED;
 306
 307         if (quirks->brightness)
 308                 interface->capability |= ACER_CAP_BRIGHTNESS;
 309 }
 310
 311 static int dmi_matched(const struct dmi_system_id *dmi)
 312 {
 313         quirks = dmi->driver_data;
 314         return 1;
 315 }
 316
 317 static struct quirk_entry quirk_unknown = {
 318 };
 319
 320 static struct quirk_entry quirk_acer_aspire_1520 = {
 321         .brightness = -1,
 322 };
 323
 324 static struct quirk_entry quirk_acer_travelmate_2490 = {
 325         .mailled = 1,
 326 };
 327
 328 /* This AMW0 laptop has no bluetooth */
 329 static struct quirk_entry quirk_medion_md_98300 = {
 330         .wireless = 1,
 331 };
 332
 333 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 334         .wireless = 2,
 335 };
 336
 337 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 338         .wireless = 3,
 339 };
 340
 341 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
 342 static struct dmi_system_id acer_blacklist[] = {
 343         {
 344                 .ident = "Acer Aspire One (SSD)",
 345                 .matches = {
 346                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 347                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 348                 },
 349         },
 350         {
 351                 .ident = "Acer Aspire One (HDD)",
 352                 .matches = {
 353                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 354                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 355                 },
 356         },
 357         {}
 358 };
 359
 360 static struct dmi_system_id acer_quirks[] = {
 361         {
 362                 .callback = dmi_matched,
 363                 .ident = "Acer Aspire 1360",
 364                 .matches = {
 365                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 366                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 367                 },
 368                 .driver_data = &quirk_acer_aspire_1520,
 369         },
 370         {
 371                 .callback = dmi_matched,
 372                 .ident = "Acer Aspire 1520",
 373                 .matches = {
 374                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 375                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 376                 },
 377                 .driver_data = &quirk_acer_aspire_1520,
 378         },
 379         {
 380                 .callback = dmi_matched,
 381                 .ident = "Acer Aspire 3100",
 382                 .matches = {
 383                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 384                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 385                 },
 386                 .driver_data = &quirk_acer_travelmate_2490,
 387         },
 388         {
 389                 .callback = dmi_matched,
 390                 .ident = "Acer Aspire 3610",
 391                 .matches = {
 392                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 393                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 394                 },
 395                 .driver_data = &quirk_acer_travelmate_2490,
 396         },
 397         {
 398                 .callback = dmi_matched,
 399                 .ident = "Acer Aspire 5100",
 400                 .matches = {
 401                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 402                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 403                 },
 404                 .driver_data = &quirk_acer_travelmate_2490,
 405         },
 406         {
 407                 .callback = dmi_matched,
 408                 .ident = "Acer Aspire 5610",
 409                 .matches = {
 410                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 411                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 412                 },
 413                 .driver_data = &quirk_acer_travelmate_2490,
 414         },
 415         {
 416                 .callback = dmi_matched,
 417                 .ident = "Acer Aspire 5630",
 418                 .matches = {
 419                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 420                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 421                 },
 422                 .driver_data = &quirk_acer_travelmate_2490,
 423         },
 424         {
 425                 .callback = dmi_matched,
 426                 .ident = "Acer Aspire 5650",
 427                 .matches = {
 428                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 429                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 430                 },
 431                 .driver_data = &quirk_acer_travelmate_2490,
 432         },
 433         {
 434                 .callback = dmi_matched,
 435                 .ident = "Acer Aspire 5680",
 436                 .matches = {
 437                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 438                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 439                 },
 440                 .driver_data = &quirk_acer_travelmate_2490,
 441         },
 442         {
 443                 .callback = dmi_matched,
 444                 .ident = "Acer Aspire 9110",
 445                 .matches = {
 446                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 447                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 448                 },
 449                 .driver_data = &quirk_acer_travelmate_2490,
 450         },
 451         {
 452                 .callback = dmi_matched,
 453                 .ident = "Acer TravelMate 2490",
 454                 .matches = {
 455                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 456                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 457                 },
 458                 .driver_data = &quirk_acer_travelmate_2490,
 459         },
 460         {
 461                 .callback = dmi_matched,
 462                 .ident = "Acer TravelMate 4200",
 463                 .matches = {
 464                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 465                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 466                 },
 467                 .driver_data = &quirk_acer_travelmate_2490,
 468         },
 469         {
 470                 .callback = dmi_matched,
 471                 .ident = "Fujitsu Siemens Amilo Li 1718",
 472                 .matches = {
 473                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 474                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 475                 },
 476                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 477         },
 478         {
 479                 .callback = dmi_matched,
 480                 .ident = "Medion MD 98300",
 481                 .matches = {
 482                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 483                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 484                 },
 485                 .driver_data = &quirk_medion_md_98300,
 486         },
 487         {
 488                 .callback = dmi_matched,
 489                 .ident = "Lenovo Ideapad S205",
 490                 .matches = {
 491                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 492                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 493                 },
 494                 .driver_data = &quirk_lenovo_ideapad_s205,
 495         },
 496         {
 497                 .callback = dmi_matched,
 498                 .ident = "Lenovo Ideapad S205 (Brazos)",
 499                 .matches = {
 500                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 501                         DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 502                 },
 503                 .driver_data = &quirk_lenovo_ideapad_s205,
 504         },
 505         {
 506                 .callback = dmi_matched,
 507                 .ident = "Lenovo 3000 N200",
 508                 .matches = {
 509                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 510                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 511                 },
 512                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 513         },
 514         {
 515                 .callback = dmi_matched,
 516                 .ident = "Lenovo Ideapad S205-10382JG",
 517                 .matches = {
 518                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 519                         DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
 520                 },
 521                 .driver_data = &quirk_lenovo_ideapad_s205,
 522         },
 523         {
 524                 .callback = dmi_matched,
 525                 .ident = "Lenovo Ideapad S205-1038DPG",
 526                 .matches = {
 527                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 528                         DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
 529                 },
 530                 .driver_data = &quirk_lenovo_ideapad_s205,
 531         },
 532         {}
 533 };
 534
 535 static int video_set_backlight_video_vendor(const struct dmi_system_id *d)
 536 {
 537         interface->capability &= ~ACER_CAP_BRIGHTNESS;
 538         pr_info("Brightness must be controlled by generic video driver\n");
 539         return 0;
 540 }
 541
 542 static const struct dmi_system_id video_vendor_dmi_table[] = {
 543         {
 544                 .callback = video_set_backlight_video_vendor,
 545                 .ident = "Acer TravelMate 4750",
 546                 .matches = {
 547                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 548                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 549                 },
 550         },
 551         {
 552                 .callback = video_set_backlight_video_vendor,
 553                 .ident = "Acer Extensa 5235",
 554                 .matches = {
 555                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 556                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 557                 },
 558         },
 559         {
 560                 .callback = video_set_backlight_video_vendor,
 561                 .ident = "Acer TravelMate 5760",
 562                 .matches = {
 563                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 564                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 565                 },
 566         },
 567         {
 568                 .callback = video_set_backlight_video_vendor,
 569                 .ident = "Acer Aspire 5750",
 570                 .matches = {
 571                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 572                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 573                 },
 574         },
 575         {}
 576 };
 577
 578 /* Find which quirks are needed for a particular vendor/ model pair */
 579 static void find_quirks(void)
 580 {
 581         if (!force_series) {
 582                 dmi_check_system(acer_quirks);
 583         } else if (force_series == 2490) {
 584                 quirks = &quirk_acer_travelmate_2490;
 585         }
 586
 587         if (quirks == NULL)
 588                 quirks = &quirk_unknown;
 589
 590         set_quirks();
 591 }
 592
 593 /*
 594  * General interface convenience methods
 595  */
 596
 597 static bool has_cap(u32 cap)
 598 {
 599         if ((interface->capability & cap) != 0)
 600                 return 1;
 601
 602         return 0;
 603 }
 604
 605 /*
 606  * AMW0 (V1) interface
 607  */
 608 struct wmab_args {
 609         u32 eax;
 610         u32 ebx;
 611         u32 ecx;
 612         u32 edx;
 613 };
 614
 615 struct wmab_ret {
 616         u32 eax;
 617         u32 ebx;
 618         u32 ecx;
 619         u32 edx;
 620         u32 eex;
 621 };
 622
 623 static acpi_status wmab_execute(struct wmab_args *regbuf,
 624 struct acpi_buffer *result)
 625 {
 626         struct acpi_buffer input;
 627         acpi_status status;
 628         input.length = sizeof(struct wmab_args);
 629         input.pointer = (u8 *)regbuf;
 630
 631         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
 632
 633         return status;
 634 }
 635
 636 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 637 {
 638         int err;
 639         u8 result;
 640
 641         switch (cap) {
 642         case ACER_CAP_MAILLED:
 643                 switch (quirks->mailled) {
 644                 default:
 645                         err = ec_read(0xA, &result);
 646                         if (err)
 647                                 return AE_ERROR;
 648                         *value = (result >> 7) & 0x1;
 649                         return AE_OK;
 650                 }
 651                 break;
 652         case ACER_CAP_WIRELESS:
 653                 switch (quirks->wireless) {
 654                 case 1:
 655                         err = ec_read(0x7B, &result);
 656                         if (err)
 657                                 return AE_ERROR;
 658                         *value = result & 0x1;
 659                         return AE_OK;
 660                 case 2:
 661                         err = ec_read(0x71, &result);
 662                         if (err)
 663                                 return AE_ERROR;
 664                         *value = result & 0x1;
 665                         return AE_OK;
 666                 case 3:
 667                         err = ec_read(0x78, &result);
 668                         if (err)
 669                                 return AE_ERROR;
 670                         *value = result & 0x1;
 671                         return AE_OK;
 672                 default:
 673                         err = ec_read(0xA, &result);
 674                         if (err)
 675                                 return AE_ERROR;
 676                         *value = (result >> 2) & 0x1;
 677                         return AE_OK;
 678                 }
 679                 break;
 680         case ACER_CAP_BLUETOOTH:
 681                 switch (quirks->bluetooth) {
 682                 default:
 683                         err = ec_read(0xA, &result);
 684                         if (err)
 685                                 return AE_ERROR;
 686                         *value = (result >> 4) & 0x1;
 687                         return AE_OK;
 688                 }
 689                 break;
 690         case ACER_CAP_BRIGHTNESS:
 691                 switch (quirks->brightness) {
 692                 default:
 693                         err = ec_read(0x83, &result);
 694                         if (err)
 695                                 return AE_ERROR;
 696                         *value = result;
 697                         return AE_OK;
 698                 }
 699                 break;
 700         default:
 701                 return AE_ERROR;
 702         }
 703         return AE_OK;
 704 }
 705
 706 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 707 {
 708         struct wmab_args args;
 709
 710         args.eax = ACER_AMW0_WRITE;
 711         args.ebx = value ? (1<<8) : 0;
 712         args.ecx = args.edx = 0;
 713
 714         switch (cap) {
 715         case ACER_CAP_MAILLED:
 716                 if (value > 1)
 717                         return AE_BAD_PARAMETER;
 718                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 719                 break;
 720         case ACER_CAP_WIRELESS:
 721                 if (value > 1)
 722                         return AE_BAD_PARAMETER;
 723                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 724                 break;
 725         case ACER_CAP_BLUETOOTH:
 726                 if (value > 1)
 727                         return AE_BAD_PARAMETER;
 728                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 729                 break;
 730         case ACER_CAP_BRIGHTNESS:
 731                 if (value > max_brightness)
 732                         return AE_BAD_PARAMETER;
 733                 switch (quirks->brightness) {
 734                 default:
 735                         return ec_write(0x83, value);
 736                         break;
 737                 }
 738         default:
 739                 return AE_ERROR;
 740         }
 741
 742         /* Actually do the set */
 743         return wmab_execute(&args, NULL);
 744 }
 745
 746 static acpi_status AMW0_find_mailled(void)
 747 {
 748         struct wmab_args args;
 749         struct wmab_ret ret;
 750         acpi_status status = AE_OK;
 751         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 752         union acpi_object *obj;
 753
 754         args.eax = 0x86;
 755         args.ebx = args.ecx = args.edx = 0;
 756
 757         status = wmab_execute(&args, &out);
 758         if (ACPI_FAILURE(status))
 759                 return status;
 760
 761         obj = (union acpi_object *) out.pointer;
 762         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 763         obj->buffer.length == sizeof(struct wmab_ret)) {
 764                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 765         } else {
 766                 kfree(out.pointer);
 767                 return AE_ERROR;
 768         }
 769
 770         if (ret.eex & 0x1)
 771                 interface->capability |= ACER_CAP_MAILLED;
 772
 773         kfree(out.pointer);
 774
 775         return AE_OK;
 776 }
 777
 778 static int AMW0_set_cap_acpi_check_device_found;
 779
 780 static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
 781         u32 level, void *context, void **retval)
 782 {
 783         AMW0_set_cap_acpi_check_device_found = 1;
 784         return AE_OK;
 785 }
 786
 787 static const struct acpi_device_id norfkill_ids[] = {
 788         { "VPC2004", 0},
 789         { "IBM0068", 0},
 790         { "LEN0068", 0},
 791         { "SNY5001", 0},        /* sony-laptop in charge */
 792         { "", 0},
 793 };
 794
 795 static int AMW0_set_cap_acpi_check_device(void)
 796 {
 797         const struct acpi_device_id *id;
 798
 799         for (id = norfkill_ids; id->id[0]; id++)
 800                 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
 801                                 NULL, NULL);
 802         return AMW0_set_cap_acpi_check_device_found;
 803 }
 804
 805 static acpi_status AMW0_set_capabilities(void)
 806 {
 807         struct wmab_args args;
 808         struct wmab_ret ret;
 809         acpi_status status;
 810         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 811         union acpi_object *obj;
 812
 813         /*
 814          * On laptops with this strange GUID (non Acer), normal probing doesn't
 815          * work.
 816          */
 817         if (wmi_has_guid(AMW0_GUID2)) {
 818                 if ((quirks != &quirk_unknown) ||
 819                     !AMW0_set_cap_acpi_check_device())
 820                         interface->capability |= ACER_CAP_WIRELESS;
 821                 return AE_OK;
 822         }
 823
 824         args.eax = ACER_AMW0_WRITE;
 825         args.ecx = args.edx = 0;
 826
 827         args.ebx = 0xa2 << 8;
 828         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 829
 830         status = wmab_execute(&args, &out);
 831         if (ACPI_FAILURE(status))
 832                 return status;
 833
 834         obj = out.pointer;
 835         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 836         obj->buffer.length == sizeof(struct wmab_ret)) {
 837                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 838         } else {
 839                 status = AE_ERROR;
 840                 goto out;
 841         }
 842
 843         if (ret.eax & 0x1)
 844                 interface->capability |= ACER_CAP_WIRELESS;
 845
 846         args.ebx = 2 << 8;
 847         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 848
 849         /*
 850          * It's ok to use existing buffer for next wmab_execute call.
 851          * But we need to kfree(out.pointer) if next wmab_execute fail.
 852          */
 853         status = wmab_execute(&args, &out);
 854         if (ACPI_FAILURE(status))
 855                 goto out;
 856
 857         obj = (union acpi_object *) out.pointer;
 858         if (obj && obj->type == ACPI_TYPE_BUFFER
 859         && obj->buffer.length == sizeof(struct wmab_ret)) {
 860                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 861         } else {
 862                 status = AE_ERROR;
 863                 goto out;
 864         }
 865
 866         if (ret.eax & 0x1)
 867                 interface->capability |= ACER_CAP_BLUETOOTH;
 868
 869         /*
 870          * This appears to be safe to enable, since all Wistron based laptops
 871          * appear to use the same EC register for brightness, even if they
 872          * differ for wireless, etc
 873          */
 874         if (quirks->brightness >= 0)
 875                 interface->capability |= ACER_CAP_BRIGHTNESS;
 876
 877         status = AE_OK;
 878 out:
 879         kfree(out.pointer);
 880         return status;
 881 }
 882
 883 static struct wmi_interface AMW0_interface = {
 884         .type = ACER_AMW0,
 885 };
 886
 887 static struct wmi_interface AMW0_V2_interface = {
 888         .type = ACER_AMW0_V2,
 889 };
 890
 891 /*
 892  * New interface (The WMID interface)
 893  */
 894 static acpi_status
 895 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 896 {
 897         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 898         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 899         union acpi_object *obj;
 900         u32 tmp = 0;
 901         acpi_status status;
 902
 903         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 904
 905         if (ACPI_FAILURE(status))
 906                 return status;
 907
 908         obj = (union acpi_object *) result.pointer;
 909         if (obj) {
 910                 if (obj->type == ACPI_TYPE_BUFFER &&
 911                         (obj->buffer.length == sizeof(u32) ||
 912                         obj->buffer.length == sizeof(u64))) {
 913                         tmp = *((u32 *) obj->buffer.pointer);
 914                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 915                         tmp = (u32) obj->integer.value;
 916                 }
 917         }
 918
 919         if (out)
 920                 *out = tmp;
 921
 922         kfree(result.pointer);
 923
 924         return status;
 925 }
 926
 927 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 928 {
 929         acpi_status status;
 930         u8 tmp;
 931         u32 result, method_id = 0;
 932
 933         switch (cap) {
 934         case ACER_CAP_WIRELESS:
 935                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 936                 break;
 937         case ACER_CAP_BLUETOOTH:
 938                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 939                 break;
 940         case ACER_CAP_BRIGHTNESS:
 941                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 942                 break;
 943         case ACER_CAP_THREEG:
 944                 method_id = ACER_WMID_GET_THREEG_METHODID;
 945                 break;
 946         case ACER_CAP_MAILLED:
 947                 if (quirks->mailled == 1) {
 948                         ec_read(0x9f, &tmp);
 949                         *value = tmp & 0x1;
 950                         return 0;
 951                 }
 952         default:
 953                 return AE_ERROR;
 954         }
 955         status = WMI_execute_u32(method_id, 0, &result);
 956
 957         if (ACPI_SUCCESS(status))
 958                 *value = (u8)result;
 959
 960         return status;
 961 }
 962
 963 static acpi_status WMID_set_u32(u32 value, u32 cap)
 964 {
 965         u32 method_id = 0;
 966         char param;
 967
 968         switch (cap) {
 969         case ACER_CAP_BRIGHTNESS:
 970                 if (value > max_brightness)
 971                         return AE_BAD_PARAMETER;
 972                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
 973                 break;
 974         case ACER_CAP_WIRELESS:
 975                 if (value > 1)
 976                         return AE_BAD_PARAMETER;
 977                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
 978                 break;
 979         case ACER_CAP_BLUETOOTH:
 980                 if (value > 1)
 981                         return AE_BAD_PARAMETER;
 982                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
 983                 break;
 984         case ACER_CAP_THREEG:
 985                 if (value > 1)
 986                         return AE_BAD_PARAMETER;
 987                 method_id = ACER_WMID_SET_THREEG_METHODID;
 988                 break;
 989         case ACER_CAP_MAILLED:
 990                 if (value > 1)
 991                         return AE_BAD_PARAMETER;
 992                 if (quirks->mailled == 1) {
 993                         param = value ? 0x92 : 0x93;
 994                         i8042_lock_chip();
 995                         i8042_command(&param, 0x1059);
 996                         i8042_unlock_chip();
 997                         return 0;
 998                 }
 999                 break;
1000         default:
1001                 return AE_ERROR;
1002         }
1003         return WMI_execute_u32(method_id, (u32)value, NULL);
1004 }
1005
1006 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1007 {
1008         struct wmid3_gds_return_value return_value;
1009         acpi_status status;
1010         union acpi_object *obj;
1011         struct wmid3_gds_get_input_param params = {
1012                 .function_num = 0x1,
1013                 .hotkey_number = commun_fn_key_number,
1014                 .devices = device,
1015         };
1016         struct acpi_buffer input = {
1017                 sizeof(struct wmid3_gds_get_input_param),
1018                 &params
1019         };
1020         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1021
1022         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1023         if (ACPI_FAILURE(status))
1024                 return status;
1025
1026         obj = output.pointer;
1027
1028         if (!obj)
1029                 return AE_ERROR;
1030         else if (obj->type != ACPI_TYPE_BUFFER) {
1031                 kfree(obj);
1032                 return AE_ERROR;
1033         }
1034         if (obj->buffer.length != 8) {
1035                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1036                 kfree(obj);
1037                 return AE_ERROR;
1038         }
1039
1040         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1041         kfree(obj);
1042
1043         if (return_value.error_code || return_value.ec_return_value)
1044                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1045                         device,
1046                         return_value.error_code,
1047                         return_value.ec_return_value);
1048         else
1049                 *value = !!(return_value.devices & device);
1050
1051         return status;
1052 }
1053
1054 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1055 {
1056         u16 device;
1057
1058         switch (cap) {
1059         case ACER_CAP_WIRELESS:
1060                 device = ACER_WMID3_GDS_WIRELESS;
1061                 break;
1062         case ACER_CAP_BLUETOOTH:
1063                 device = ACER_WMID3_GDS_BLUETOOTH;
1064                 break;
1065         case ACER_CAP_THREEG:
1066                 device = ACER_WMID3_GDS_THREEG;
1067                 break;
1068         default:
1069                 return AE_ERROR;
1070         }
1071         return wmid3_get_device_status(value, device);
1072 }
1073
1074 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1075 {
1076         struct wmid3_gds_return_value return_value;
1077         acpi_status status;
1078         union acpi_object *obj;
1079         u16 devices;
1080         struct wmid3_gds_get_input_param get_params = {
1081                 .function_num = 0x1,
1082                 .hotkey_number = commun_fn_key_number,
1083                 .devices = commun_func_bitmap,
1084         };
1085         struct acpi_buffer get_input = {
1086                 sizeof(struct wmid3_gds_get_input_param),
1087                 &get_params
1088         };
1089         struct wmid3_gds_set_input_param set_params = {
1090                 .function_num = 0x2,
1091                 .hotkey_number = commun_fn_key_number,
1092                 .devices = commun_func_bitmap,
1093         };
1094         struct acpi_buffer set_input = {
1095                 sizeof(struct wmid3_gds_set_input_param),
1096                 &set_params
1097         };
1098         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1099         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1100
1101         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1102         if (ACPI_FAILURE(status))
1103                 return status;
1104
1105         obj = output.pointer;
1106
1107         if (!obj)
1108                 return AE_ERROR;
1109         else if (obj->type != ACPI_TYPE_BUFFER) {
1110                 kfree(obj);
1111                 return AE_ERROR;
1112         }
1113         if (obj->buffer.length != 8) {
1114                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1115                 kfree(obj);
1116                 return AE_ERROR;
1117         }
1118
1119         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1120         kfree(obj);
1121
1122         if (return_value.error_code || return_value.ec_return_value) {
1123                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1124                         return_value.error_code,
1125                         return_value.ec_return_value);
1126                 return status;
1127         }
1128
1129         devices = return_value.devices;
1130         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1131
1132         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1133         if (ACPI_FAILURE(status))
1134                 return status;
1135
1136         obj = output2.pointer;
1137
1138         if (!obj)
1139                 return AE_ERROR;
1140         else if (obj->type != ACPI_TYPE_BUFFER) {
1141                 kfree(obj);
1142                 return AE_ERROR;
1143         }
1144         if (obj->buffer.length != 4) {
1145                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1146                 kfree(obj);
1147                 return AE_ERROR;
1148         }
1149
1150         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1151         kfree(obj);
1152
1153         if (return_value.error_code || return_value.ec_return_value)
1154                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1155                         return_value.error_code,
1156                         return_value.ec_return_value);
1157
1158         return status;
1159 }
1160
1161 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1162 {
1163         u16 device;
1164
1165         switch (cap) {
1166         case ACER_CAP_WIRELESS:
1167                 device = ACER_WMID3_GDS_WIRELESS;
1168                 break;
1169         case ACER_CAP_BLUETOOTH:
1170                 device = ACER_WMID3_GDS_BLUETOOTH;
1171                 break;
1172         case ACER_CAP_THREEG:
1173                 device = ACER_WMID3_GDS_THREEG;
1174                 break;
1175         default:
1176                 return AE_ERROR;
1177         }
1178         return wmid3_set_device_status(value, device);
1179 }
1180
1181 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1182 {
1183         struct hotkey_function_type_aa *type_aa;
1184
1185         /* We are looking for OEM-specific Type AAh */
1186         if (header->type != 0xAA)
1187                 return;
1188
1189         has_type_aa = true;
1190         type_aa = (struct hotkey_function_type_aa *) header;
1191
1192         pr_info("Function bitmap for Communication Button: 0x%x\n",
1193                 type_aa->commun_func_bitmap);
1194         commun_func_bitmap = type_aa->commun_func_bitmap;
1195
1196         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1197                 interface->capability |= ACER_CAP_WIRELESS;
1198         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1199                 interface->capability |= ACER_CAP_THREEG;
1200         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1201                 interface->capability |= ACER_CAP_BLUETOOTH;
1202
1203         commun_fn_key_number = type_aa->commun_fn_key_number;
1204 }
1205
1206 static acpi_status WMID_set_capabilities(void)
1207 {
1208         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1209         union acpi_object *obj;
1210         acpi_status status;
1211         u32 devices;
1212
1213         status = wmi_query_block(WMID_GUID2, 1, &out);
1214         if (ACPI_FAILURE(status))
1215                 return status;
1216
1217         obj = (union acpi_object *) out.pointer;
1218         if (obj) {
1219                 if (obj->type == ACPI_TYPE_BUFFER &&
1220                         (obj->buffer.length == sizeof(u32) ||
1221                         obj->buffer.length == sizeof(u64))) {
1222                         devices = *((u32 *) obj->buffer.pointer);
1223                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1224                         devices = (u32) obj->integer.value;
1225                 } else {
1226                         kfree(out.pointer);
1227                         return AE_ERROR;
1228                 }
1229         } else {
1230                 kfree(out.pointer);
1231                 return AE_ERROR;
1232         }
1233
1234         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1235         if (devices & 0x07)
1236                 interface->capability |= ACER_CAP_WIRELESS;
1237         if (devices & 0x40)
1238                 interface->capability |= ACER_CAP_THREEG;
1239         if (devices & 0x10)
1240                 interface->capability |= ACER_CAP_BLUETOOTH;
1241
1242         if (!(devices & 0x20))
1243                 max_brightness = 0x9;
1244
1245         kfree(out.pointer);
1246         return status;
1247 }
1248
1249 static struct wmi_interface wmid_interface = {
1250         .type = ACER_WMID,
1251 };
1252
1253 static struct wmi_interface wmid_v2_interface = {
1254         .type = ACER_WMID_v2,
1255 };
1256
1257 /*
1258  * Generic Device (interface-independent)
1259  */
1260
1261 static acpi_status get_u32(u32 *value, u32 cap)
1262 {
1263         acpi_status status = AE_ERROR;
1264
1265         switch (interface->type) {
1266         case ACER_AMW0:
1267                 status = AMW0_get_u32(value, cap);
1268                 break;
1269         case ACER_AMW0_V2:
1270                 if (cap == ACER_CAP_MAILLED) {
1271                         status = AMW0_get_u32(value, cap);
1272                         break;
1273                 }
1274         case ACER_WMID:
1275                 status = WMID_get_u32(value, cap);
1276                 break;
1277         case ACER_WMID_v2:
1278                 if (cap & (ACER_CAP_WIRELESS |
1279                            ACER_CAP_BLUETOOTH |
1280                            ACER_CAP_THREEG))
1281                         status = wmid_v2_get_u32(value, cap);
1282                 else if (wmi_has_guid(WMID_GUID2))
1283                         status = WMID_get_u32(value, cap);
1284                 break;
1285         }
1286
1287         return status;
1288 }
1289
1290 static acpi_status set_u32(u32 value, u32 cap)
1291 {
1292         acpi_status status;
1293
1294         if (interface->capability & cap) {
1295                 switch (interface->type) {
1296                 case ACER_AMW0:
1297                         return AMW0_set_u32(value, cap);
1298                 case ACER_AMW0_V2:
1299                         if (cap == ACER_CAP_MAILLED)
1300                                 return AMW0_set_u32(value, cap);
1301
1302                         /*
1303                          * On some models, some WMID methods don't toggle
1304                          * properly. For those cases, we want to run the AMW0
1305                          * method afterwards to be certain we've really toggled
1306                          * the device state.
1307                          */
1308                         if (cap == ACER_CAP_WIRELESS ||
1309                                 cap == ACER_CAP_BLUETOOTH) {
1310                                 status = WMID_set_u32(value, cap);
1311                                 if (ACPI_FAILURE(status))
1312                                         return status;
1313
1314                                 return AMW0_set_u32(value, cap);
1315                         }
1316                 case ACER_WMID:
1317                         return WMID_set_u32(value, cap);
1318                 case ACER_WMID_v2:
1319                         if (cap & (ACER_CAP_WIRELESS |
1320                                    ACER_CAP_BLUETOOTH |
1321                                    ACER_CAP_THREEG))
1322                                 return wmid_v2_set_u32(value, cap);
1323                         else if (wmi_has_guid(WMID_GUID2))
1324                                 return WMID_set_u32(value, cap);
1325                 default:
1326                         return AE_BAD_PARAMETER;
1327                 }
1328         }
1329         return AE_BAD_PARAMETER;
1330 }
1331
1332 static void __init acer_commandline_init(void)
1333 {
1334         /*
1335          * These will all fail silently if the value given is invalid, or the
1336          * capability isn't available on the given interface
1337          */
1338         if (mailled >= 0)
1339                 set_u32(mailled, ACER_CAP_MAILLED);
1340         if (!has_type_aa && threeg >= 0)
1341                 set_u32(threeg, ACER_CAP_THREEG);
1342         if (brightness >= 0)
1343                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1344 }
1345
1346 /*
1347  * LED device (Mail LED only, no other LEDs known yet)
1348  */
1349 static void mail_led_set(struct led_classdev *led_cdev,
1350 enum led_brightness value)
1351 {
1352         set_u32(value, ACER_CAP_MAILLED);
1353 }
1354
1355 static struct led_classdev mail_led = {
1356         .name = "acer-wmi::mail",
1357         .brightness_set = mail_led_set,
1358 };
1359
1360 static int acer_led_init(struct device *dev)
1361 {
1362         return led_classdev_register(dev, &mail_led);
1363 }
1364
1365 static void acer_led_exit(void)
1366 {
1367         set_u32(LED_OFF, ACER_CAP_MAILLED);
1368         led_classdev_unregister(&mail_led);
1369 }
1370
1371 /*
1372  * Backlight device
1373  */
1374 static struct backlight_device *acer_backlight_device;
1375
1376 static int read_brightness(struct backlight_device *bd)
1377 {
1378         u32 value;
1379         get_u32(&value, ACER_CAP_BRIGHTNESS);
1380         return value;
1381 }
1382
1383 static int update_bl_status(struct backlight_device *bd)
1384 {
1385         int intensity = bd->props.brightness;
1386
1387         if (bd->props.power != FB_BLANK_UNBLANK)
1388                 intensity = 0;
1389         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1390                 intensity = 0;
1391
1392         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1393
1394         return 0;
1395 }
1396
1397 static const struct backlight_ops acer_bl_ops = {
1398         .get_brightness = read_brightness,
1399         .update_status = update_bl_status,
1400 };
1401
1402 static int acer_backlight_init(struct device *dev)
1403 {
1404         struct backlight_properties props;
1405         struct backlight_device *bd;
1406
1407         memset(&props, 0, sizeof(struct backlight_properties));
1408         props.type = BACKLIGHT_PLATFORM;
1409         props.max_brightness = max_brightness;
1410         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1411                                        &props);
1412         if (IS_ERR(bd)) {
1413                 pr_err("Could not register Acer backlight device\n");
1414                 acer_backlight_device = NULL;
1415                 return PTR_ERR(bd);
1416         }
1417
1418         acer_backlight_device = bd;
1419
1420         bd->props.power = FB_BLANK_UNBLANK;
1421         bd->props.brightness = read_brightness(bd);
1422         backlight_update_status(bd);
1423         return 0;
1424 }
1425
1426 static void acer_backlight_exit(void)
1427 {
1428         backlight_device_unregister(acer_backlight_device);
1429 }
1430
1431 /*
1432  * Accelerometer device
1433  */
1434 static acpi_handle gsensor_handle;
1435
1436 static int acer_gsensor_init(void)
1437 {
1438         acpi_status status;
1439         struct acpi_buffer output;
1440         union acpi_object out_obj;
1441
1442         output.length = sizeof(out_obj);
1443         output.pointer = &out_obj;
1444         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1445         if (ACPI_FAILURE(status))
1446                 return -1;
1447
1448         return 0;
1449 }
1450
1451 static int acer_gsensor_open(struct input_dev *input)
1452 {
1453         return acer_gsensor_init();
1454 }
1455
1456 static int acer_gsensor_event(void)
1457 {
1458         acpi_status status;
1459         struct acpi_buffer output;
1460         union acpi_object out_obj[5];
1461
1462         if (!has_cap(ACER_CAP_ACCEL))
1463                 return -1;
1464
1465         output.length = sizeof(out_obj);
1466         output.pointer = out_obj;
1467
1468         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1469         if (ACPI_FAILURE(status))
1470                 return -1;
1471
1472         if (out_obj->package.count != 4)
1473                 return -1;
1474
1475         input_report_abs(acer_wmi_accel_dev, ABS_X,
1476                 (s16)out_obj->package.elements[0].integer.value);
1477         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1478                 (s16)out_obj->package.elements[1].integer.value);
1479         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1480                 (s16)out_obj->package.elements[2].integer.value);
1481         input_sync(acer_wmi_accel_dev);
1482         return 0;
1483 }
1484
1485 /*
1486  * Rfkill devices
1487  */
1488 static void acer_rfkill_update(struct work_struct *ignored);
1489 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1490 static void acer_rfkill_update(struct work_struct *ignored)
1491 {
1492         u32 state;
1493         acpi_status status;
1494
1495         if (has_cap(ACER_CAP_WIRELESS)) {
1496                 status = get_u32(&state, ACER_CAP_WIRELESS);
1497                 if (ACPI_SUCCESS(status)) {
1498                         if (quirks->wireless == 3)
1499                                 rfkill_set_hw_state(wireless_rfkill, !state);
1500                         else
1501                                 rfkill_set_sw_state(wireless_rfkill, !state);
1502                 }
1503         }
1504
1505         if (has_cap(ACER_CAP_BLUETOOTH)) {
1506                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1507                 if (ACPI_SUCCESS(status))
1508                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1509         }
1510
1511         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1512                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1513                 if (ACPI_SUCCESS(status))
1514                         rfkill_set_sw_state(threeg_rfkill, !state);
1515         }
1516
1517         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1518 }
1519
1520 static int acer_rfkill_set(void *data, bool blocked)
1521 {
1522         acpi_status status;
1523         u32 cap = (unsigned long)data;
1524
1525         if (rfkill_inited) {
1526                 status = set_u32(!blocked, cap);
1527                 if (ACPI_FAILURE(status))
1528                         return -ENODEV;
1529         }
1530
1531         return 0;
1532 }
1533
1534 static const struct rfkill_ops acer_rfkill_ops = {
1535         .set_block = acer_rfkill_set,
1536 };
1537
1538 static struct rfkill *acer_rfkill_register(struct device *dev,
1539                                            enum rfkill_type type,
1540                                            char *name, u32 cap)
1541 {
1542         int err;
1543         struct rfkill *rfkill_dev;
1544         u32 state;
1545         acpi_status status;
1546
1547         rfkill_dev = rfkill_alloc(name, dev, type,
1548                                   &acer_rfkill_ops,
1549                                   (void *)(unsigned long)cap);
1550         if (!rfkill_dev)
1551                 return ERR_PTR(-ENOMEM);
1552
1553         status = get_u32(&state, cap);
1554
1555         err = rfkill_register(rfkill_dev);
1556         if (err) {
1557                 rfkill_destroy(rfkill_dev);
1558                 return ERR_PTR(err);
1559         }
1560
1561         if (ACPI_SUCCESS(status))
1562                 rfkill_set_sw_state(rfkill_dev, !state);
1563
1564         return rfkill_dev;
1565 }
1566
1567 static int acer_rfkill_init(struct device *dev)
1568 {
1569         int err;
1570
1571         if (has_cap(ACER_CAP_WIRELESS)) {
1572                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1573                         "acer-wireless", ACER_CAP_WIRELESS);
1574                 if (IS_ERR(wireless_rfkill)) {
1575                         err = PTR_ERR(wireless_rfkill);
1576                         goto error_wireless;
1577                 }
1578         }
1579
1580         if (has_cap(ACER_CAP_BLUETOOTH)) {
1581                 bluetooth_rfkill = acer_rfkill_register(dev,
1582                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1583                         ACER_CAP_BLUETOOTH);
1584                 if (IS_ERR(bluetooth_rfkill)) {
1585                         err = PTR_ERR(bluetooth_rfkill);
1586                         goto error_bluetooth;
1587                 }
1588         }
1589
1590         if (has_cap(ACER_CAP_THREEG)) {
1591                 threeg_rfkill = acer_rfkill_register(dev,
1592                         RFKILL_TYPE_WWAN, "acer-threeg",
1593                         ACER_CAP_THREEG);
1594                 if (IS_ERR(threeg_rfkill)) {
1595                         err = PTR_ERR(threeg_rfkill);
1596                         goto error_threeg;
1597                 }
1598         }
1599
1600         rfkill_inited = true;
1601
1602         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1603             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1604                 schedule_delayed_work(&acer_rfkill_work,
1605                         round_jiffies_relative(HZ));
1606
1607         return 0;
1608
1609 error_threeg:
1610         if (has_cap(ACER_CAP_BLUETOOTH)) {
1611                 rfkill_unregister(bluetooth_rfkill);
1612                 rfkill_destroy(bluetooth_rfkill);
1613         }
1614 error_bluetooth:
1615         if (has_cap(ACER_CAP_WIRELESS)) {
1616                 rfkill_unregister(wireless_rfkill);
1617                 rfkill_destroy(wireless_rfkill);
1618         }
1619 error_wireless:
1620         return err;
1621 }
1622
1623 static void acer_rfkill_exit(void)
1624 {
1625         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1626             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1627                 cancel_delayed_work_sync(&acer_rfkill_work);
1628
1629         if (has_cap(ACER_CAP_WIRELESS)) {
1630                 rfkill_unregister(wireless_rfkill);
1631                 rfkill_destroy(wireless_rfkill);
1632         }
1633
1634         if (has_cap(ACER_CAP_BLUETOOTH)) {
1635                 rfkill_unregister(bluetooth_rfkill);
1636                 rfkill_destroy(bluetooth_rfkill);
1637         }
1638
1639         if (has_cap(ACER_CAP_THREEG)) {
1640                 rfkill_unregister(threeg_rfkill);
1641                 rfkill_destroy(threeg_rfkill);
1642         }
1643         return;
1644 }
1645
1646 /*
1647  * sysfs interface
1648  */
1649 static ssize_t show_bool_threeg(struct device *dev,
1650         struct device_attribute *attr, char *buf)
1651 {
1652         u32 result; \
1653         acpi_status status;
1654
1655         pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1656                 current->comm);
1657         status = get_u32(&result, ACER_CAP_THREEG);
1658         if (ACPI_SUCCESS(status))
1659                 return sprintf(buf, "%u\n", result);
1660         return sprintf(buf, "Read error\n");
1661 }
1662
1663 static ssize_t set_bool_threeg(struct device *dev,
1664         struct device_attribute *attr, const char *buf, size_t count)
1665 {
1666         u32 tmp = simple_strtoul(buf, NULL, 10);
1667         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1668         pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1669                 current->comm);
1670         if (ACPI_FAILURE(status))
1671                 return -EINVAL;
1672         return count;
1673 }
1674 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1675         set_bool_threeg);
1676
1677 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1678         char *buf)
1679 {
1680         pr_info("This interface sysfs will be removed in 2012 - used by: %s\n",
1681                 current->comm);
1682         switch (interface->type) {
1683         case ACER_AMW0:
1684                 return sprintf(buf, "AMW0\n");
1685         case ACER_AMW0_V2:
1686                 return sprintf(buf, "AMW0 v2\n");
1687         case ACER_WMID:
1688                 return sprintf(buf, "WMID\n");
1689         case ACER_WMID_v2:
1690                 return sprintf(buf, "WMID v2\n");
1691         default:
1692                 return sprintf(buf, "Error!\n");
1693         }
1694 }
1695
1696 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1697
1698 static void acer_wmi_notify(u32 value, void *context)
1699 {
1700         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1701         union acpi_object *obj;
1702         struct event_return_value return_value;
1703         acpi_status status;
1704         u16 device_state;
1705         const struct key_entry *key;
1706         u32 scancode;
1707
1708         status = wmi_get_event_data(value, &response);
1709         if (status != AE_OK) {
1710                 pr_warn("bad event status 0x%x\n", status);
1711                 return;
1712         }
1713
1714         obj = (union acpi_object *)response.pointer;
1715
1716         if (!obj)
1717                 return;
1718         if (obj->type != ACPI_TYPE_BUFFER) {
1719                 pr_warn("Unknown response received %d\n", obj->type);
1720                 kfree(obj);
1721                 return;
1722         }
1723         if (obj->buffer.length != 8) {
1724                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1725                 kfree(obj);
1726                 return;
1727         }
1728
1729         return_value = *((struct event_return_value *)obj->buffer.pointer);
1730         kfree(obj);
1731
1732         switch (return_value.function) {
1733         case WMID_HOTKEY_EVENT:
1734                 device_state = return_value.device_state;
1735                 pr_debug("device state: 0x%x\n", device_state);
1736
1737                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1738                                                         return_value.key_num);
1739                 if (!key) {
1740                         pr_warn("Unknown key number - 0x%x\n",
1741                                 return_value.key_num);
1742                 } else {
1743                         scancode = return_value.key_num;
1744                         switch (key->keycode) {
1745                         case KEY_WLAN:
1746                         case KEY_BLUETOOTH:
1747                                 if (has_cap(ACER_CAP_WIRELESS))
1748                                         rfkill_set_sw_state(wireless_rfkill,
1749                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1750                                 if (has_cap(ACER_CAP_THREEG))
1751                                         rfkill_set_sw_state(threeg_rfkill,
1752                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1753                                 if (has_cap(ACER_CAP_BLUETOOTH))
1754                                         rfkill_set_sw_state(bluetooth_rfkill,
1755                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1756                                 break;
1757                         case KEY_TOUCHPAD_TOGGLE:
1758                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1759                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1760                         }
1761                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1762                 }
1763                 break;
1764         case WMID_ACCEL_EVENT:
1765                 acer_gsensor_event();
1766                 break;
1767         default:
1768                 pr_warn("Unknown function number - %d - %d\n",
1769                         return_value.function, return_value.key_num);
1770                 break;
1771         }
1772 }
1773
1774 static acpi_status
1775 wmid3_set_lm_mode(struct lm_input_params *params,
1776                   struct lm_return_value *return_value)
1777 {
1778         acpi_status status;
1779         union acpi_object *obj;
1780
1781         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1782         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1783
1784         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1785         if (ACPI_FAILURE(status))
1786                 return status;
1787
1788         obj = output.pointer;
1789
1790         if (!obj)
1791                 return AE_ERROR;
1792         else if (obj->type != ACPI_TYPE_BUFFER) {
1793                 kfree(obj);
1794                 return AE_ERROR;
1795         }
1796         if (obj->buffer.length != 4) {
1797                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1798                 kfree(obj);
1799                 return AE_ERROR;
1800         }
1801
1802         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1803         kfree(obj);
1804
1805         return status;
1806 }
1807
1808 static int acer_wmi_enable_ec_raw(void)
1809 {
1810         struct lm_return_value return_value;
1811         acpi_status status;
1812         struct lm_input_params params = {
1813                 .function_num = 0x1,
1814                 .commun_devices = 0xFFFF,
1815                 .devices = 0xFFFF,
1816                 .lm_status = 0x00,            /* Launch Manager Deactive */
1817         };
1818
1819         status = wmid3_set_lm_mode(&params, &return_value);
1820
1821         if (return_value.error_code || return_value.ec_return_value)
1822                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1823                         return_value.error_code,
1824                         return_value.ec_return_value);
1825         else
1826                 pr_info("Enabled EC raw mode\n");
1827
1828         return status;
1829 }
1830
1831 static int acer_wmi_enable_lm(void)
1832 {
1833         struct lm_return_value return_value;
1834         acpi_status status;
1835         struct lm_input_params params = {
1836                 .function_num = 0x1,
1837                 .commun_devices = 0xFFFF,
1838                 .devices = 0xFFFF,
1839                 .lm_status = 0x01,            /* Launch Manager Active */
1840         };
1841
1842         status = wmid3_set_lm_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 acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1853                                                 void *ctx, void **retval)
1854 {
1855         *(acpi_handle *)retval = ah;
1856         return AE_OK;
1857 }
1858
1859 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1860                                         acpi_handle *ah)
1861 {
1862         acpi_status status;
1863         acpi_handle handle;
1864
1865         BUG_ON(!name || !ah);
1866
1867         handle = NULL;
1868         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1869                                         (void *)name, &handle);
1870
1871         if (ACPI_SUCCESS(status)) {
1872                 *ah = handle;
1873                 return 0;
1874         } else {
1875                 return -ENODEV;
1876         }
1877 }
1878
1879 static int __init acer_wmi_accel_setup(void)
1880 {
1881         int err;
1882
1883         err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1884         if (err)
1885                 return err;
1886
1887         interface->capability |= ACER_CAP_ACCEL;
1888
1889         acer_wmi_accel_dev = input_allocate_device();
1890         if (!acer_wmi_accel_dev)
1891                 return -ENOMEM;
1892
1893         acer_wmi_accel_dev->open = acer_gsensor_open;
1894
1895         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1896         acer_wmi_accel_dev->phys = "wmi/input1";
1897         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1898         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1899         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1900         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1901         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1902
1903         err = input_register_device(acer_wmi_accel_dev);
1904         if (err)
1905                 goto err_free_dev;
1906
1907         return 0;
1908
1909 err_free_dev:
1910         input_free_device(acer_wmi_accel_dev);
1911         return err;
1912 }
1913
1914 static void acer_wmi_accel_destroy(void)
1915 {
1916         input_unregister_device(acer_wmi_accel_dev);
1917 }
1918
1919 static int __init acer_wmi_input_setup(void)
1920 {
1921         acpi_status status;
1922         int err;
1923
1924         acer_wmi_input_dev = input_allocate_device();
1925         if (!acer_wmi_input_dev)
1926                 return -ENOMEM;
1927
1928         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1929         acer_wmi_input_dev->phys = "wmi/input0";
1930         acer_wmi_input_dev->id.bustype = BUS_HOST;
1931
1932         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1933         if (err)
1934                 goto err_free_dev;
1935
1936         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1937                                                 acer_wmi_notify, NULL);
1938         if (ACPI_FAILURE(status)) {
1939                 err = -EIO;
1940                 goto err_free_keymap;
1941         }
1942
1943         err = input_register_device(acer_wmi_input_dev);
1944         if (err)
1945                 goto err_uninstall_notifier;
1946
1947         return 0;
1948
1949 err_uninstall_notifier:
1950         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1951 err_free_keymap:
1952         sparse_keymap_free(acer_wmi_input_dev);
1953 err_free_dev:
1954         input_free_device(acer_wmi_input_dev);
1955         return err;
1956 }
1957
1958 static void acer_wmi_input_destroy(void)
1959 {
1960         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1961         sparse_keymap_free(acer_wmi_input_dev);
1962         input_unregister_device(acer_wmi_input_dev);
1963 }
1964
1965 /*
1966  * debugfs functions
1967  */
1968 static u32 get_wmid_devices(void)
1969 {
1970         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1971         union acpi_object *obj;
1972         acpi_status status;
1973         u32 devices = 0;
1974
1975         status = wmi_query_block(WMID_GUID2, 1, &out);
1976         if (ACPI_FAILURE(status))
1977                 return 0;
1978
1979         obj = (union acpi_object *) out.pointer;
1980         if (obj) {
1981                 if (obj->type == ACPI_TYPE_BUFFER &&
1982                         (obj->buffer.length == sizeof(u32) ||
1983                         obj->buffer.length == sizeof(u64))) {
1984                         devices = *((u32 *) obj->buffer.pointer);
1985                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1986                         devices = (u32) obj->integer.value;
1987                 }
1988         }
1989
1990         kfree(out.pointer);
1991         return devices;
1992 }
1993
1994 /*
1995  * Platform device
1996  */
1997 static int acer_platform_probe(struct platform_device *device)
1998 {
1999         int err;
2000
2001         if (has_cap(ACER_CAP_MAILLED)) {
2002                 err = acer_led_init(&device->dev);
2003                 if (err)
2004                         goto error_mailled;
2005         }
2006
2007         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2008                 err = acer_backlight_init(&device->dev);
2009                 if (err)
2010                         goto error_brightness;
2011         }
2012
2013         err = acer_rfkill_init(&device->dev);
2014         if (err)
2015                 goto error_rfkill;
2016
2017         return err;
2018
2019 error_rfkill:
2020         if (has_cap(ACER_CAP_BRIGHTNESS))
2021                 acer_backlight_exit();
2022 error_brightness:
2023         if (has_cap(ACER_CAP_MAILLED))
2024                 acer_led_exit();
2025 error_mailled:
2026         return err;
2027 }
2028
2029 static int acer_platform_remove(struct platform_device *device)
2030 {
2031         if (has_cap(ACER_CAP_MAILLED))
2032                 acer_led_exit();
2033         if (has_cap(ACER_CAP_BRIGHTNESS))
2034                 acer_backlight_exit();
2035
2036         acer_rfkill_exit();
2037         return 0;
2038 }
2039
2040 static int acer_suspend(struct device *dev)
2041 {
2042         u32 value;
2043         struct acer_data *data = &interface->data;
2044
2045         if (!data)
2046                 return -ENOMEM;
2047
2048         if (has_cap(ACER_CAP_MAILLED)) {
2049                 get_u32(&value, ACER_CAP_MAILLED);
2050                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2051                 data->mailled = value;
2052         }
2053
2054         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2055                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2056                 data->brightness = value;
2057         }
2058
2059         return 0;
2060 }
2061
2062 static int acer_resume(struct device *dev)
2063 {
2064         struct acer_data *data = &interface->data;
2065
2066         if (!data)
2067                 return -ENOMEM;
2068
2069         if (has_cap(ACER_CAP_MAILLED))
2070                 set_u32(data->mailled, ACER_CAP_MAILLED);
2071
2072         if (has_cap(ACER_CAP_BRIGHTNESS))
2073                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2074
2075         if (has_cap(ACER_CAP_ACCEL))
2076                 acer_gsensor_init();
2077
2078         return 0;
2079 }
2080
2081 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2082
2083 static void acer_platform_shutdown(struct platform_device *device)
2084 {
2085         struct acer_data *data = &interface->data;
2086
2087         if (!data)
2088                 return;
2089
2090         if (has_cap(ACER_CAP_MAILLED))
2091                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2092 }
2093
2094 static struct platform_driver acer_platform_driver = {
2095         .driver = {
2096                 .name = "acer-wmi",
2097                 .owner = THIS_MODULE,
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 int remove_sysfs(struct platform_device *device)
2108 {
2109         if (has_cap(ACER_CAP_THREEG))
2110                 device_remove_file(&device->dev, &dev_attr_threeg);
2111
2112         device_remove_file(&device->dev, &dev_attr_interface);
2113
2114         return 0;
2115 }
2116
2117 static int create_sysfs(void)
2118 {
2119         int retval = -ENOMEM;
2120
2121         if (has_cap(ACER_CAP_THREEG)) {
2122                 retval = device_create_file(&acer_platform_device->dev,
2123                         &dev_attr_threeg);
2124                 if (retval)
2125                         goto error_sysfs;
2126         }
2127
2128         retval = device_create_file(&acer_platform_device->dev,
2129                 &dev_attr_interface);
2130         if (retval)
2131                 goto error_sysfs;
2132
2133         return 0;
2134
2135 error_sysfs:
2136                 remove_sysfs(acer_platform_device);
2137         return retval;
2138 }
2139
2140 static void remove_debugfs(void)
2141 {
2142         debugfs_remove(interface->debug.devices);
2143         debugfs_remove(interface->debug.root);
2144 }
2145
2146 static int create_debugfs(void)
2147 {
2148         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2149         if (!interface->debug.root) {
2150                 pr_err("Failed to create debugfs directory");
2151                 return -ENOMEM;
2152         }
2153
2154         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2155                                         interface->debug.root,
2156                                         &interface->debug.wmid_devices);
2157         if (!interface->debug.devices)
2158                 goto error_debugfs;
2159
2160         return 0;
2161
2162 error_debugfs:
2163         remove_debugfs();
2164         return -ENOMEM;
2165 }
2166
2167 static int __init acer_wmi_init(void)
2168 {
2169         int err;
2170
2171         pr_info("Acer Laptop ACPI-WMI Extras\n");
2172
2173         if (dmi_check_system(acer_blacklist)) {
2174                 pr_info("Blacklisted hardware detected - not loading\n");
2175                 return -ENODEV;
2176         }
2177
2178         find_quirks();
2179
2180         /*
2181          * Detect which ACPI-WMI interface we're using.
2182          */
2183         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2184                 interface = &AMW0_V2_interface;
2185
2186         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2187                 interface = &wmid_interface;
2188
2189         if (wmi_has_guid(WMID_GUID3))
2190                 interface = &wmid_v2_interface;
2191
2192         if (interface)
2193                 dmi_walk(type_aa_dmi_decode, NULL);
2194
2195         if (wmi_has_guid(WMID_GUID2) && interface) {
2196                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2197                         pr_err("Unable to detect available WMID devices\n");
2198                         return -ENODEV;
2199                 }
2200                 /* WMID always provides brightness methods */
2201                 interface->capability |= ACER_CAP_BRIGHTNESS;
2202         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2203                 pr_err("No WMID device detection method found\n");
2204                 return -ENODEV;
2205         }
2206
2207         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2208                 interface = &AMW0_interface;
2209
2210                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2211                         pr_err("Unable to detect available AMW0 devices\n");
2212                         return -ENODEV;
2213                 }
2214         }
2215
2216         if (wmi_has_guid(AMW0_GUID1))
2217                 AMW0_find_mailled();
2218
2219         if (!interface) {
2220                 pr_err("No or unsupported WMI interface, unable to load\n");
2221                 return -ENODEV;
2222         }
2223
2224         set_quirks();
2225
2226         if (dmi_check_system(video_vendor_dmi_table))
2227                 acpi_video_dmi_promote_vendor();
2228         if (acpi_video_backlight_support()) {
2229                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2230                 pr_info("Brightness must be controlled by acpi video driver\n");
2231         } else {
2232                 pr_info("Disabling ACPI video driver\n");
2233                 acpi_video_unregister();
2234         }
2235
2236         if (wmi_has_guid(WMID_GUID3)) {
2237                 if (ec_raw_mode) {
2238                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2239                                 pr_err("Cannot enable EC raw mode\n");
2240                                 return -ENODEV;
2241                         }
2242                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2243                         pr_err("Cannot enable Launch Manager mode\n");
2244                         return -ENODEV;
2245                 }
2246         } else if (ec_raw_mode) {
2247                 pr_info("No WMID EC raw mode enable method\n");
2248         }
2249
2250         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2251                 err = acer_wmi_input_setup();
2252                 if (err)
2253                         return err;
2254         }
2255
2256         acer_wmi_accel_setup();
2257
2258         err = platform_driver_register(&acer_platform_driver);
2259         if (err) {
2260                 pr_err("Unable to register platform driver\n");
2261                 goto error_platform_register;
2262         }
2263
2264         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2265         if (!acer_platform_device) {
2266                 err = -ENOMEM;
2267                 goto error_device_alloc;
2268         }
2269
2270         err = platform_device_add(acer_platform_device);
2271         if (err)
2272                 goto error_device_add;
2273
2274         err = create_sysfs();
2275         if (err)
2276                 goto error_create_sys;
2277
2278         if (wmi_has_guid(WMID_GUID2)) {
2279                 interface->debug.wmid_devices = get_wmid_devices();
2280                 err = create_debugfs();
2281                 if (err)
2282                         goto error_create_debugfs;
2283         }
2284
2285         /* Override any initial settings with values from the commandline */
2286         acer_commandline_init();
2287
2288         return 0;
2289
2290 error_create_debugfs:
2291         remove_sysfs(acer_platform_device);
2292 error_create_sys:
2293         platform_device_del(acer_platform_device);
2294 error_device_add:
2295         platform_device_put(acer_platform_device);
2296 error_device_alloc:
2297         platform_driver_unregister(&acer_platform_driver);
2298 error_platform_register:
2299         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2300                 acer_wmi_input_destroy();
2301         if (has_cap(ACER_CAP_ACCEL))
2302                 acer_wmi_accel_destroy();
2303
2304         return err;
2305 }
2306
2307 static void __exit acer_wmi_exit(void)
2308 {
2309         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2310                 acer_wmi_input_destroy();
2311
2312         if (has_cap(ACER_CAP_ACCEL))
2313                 acer_wmi_accel_destroy();
2314
2315         remove_sysfs(acer_platform_device);
2316         remove_debugfs();
2317         platform_device_unregister(acer_platform_device);
2318         platform_driver_unregister(&acer_platform_driver);
2319
2320         pr_info("Acer Laptop WMI Extras unloaded\n");
2321         return;
2322 }
2323
2324 module_init(acer_wmi_init);
2325 module_exit(acer_wmi_exit);