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                 }
1226         } else {
1227                 kfree(out.pointer);
1228                 return AE_ERROR;
1229         }
1230
1231         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1232         if (devices & 0x07)
1233                 interface->capability |= ACER_CAP_WIRELESS;
1234         if (devices & 0x40)
1235                 interface->capability |= ACER_CAP_THREEG;
1236         if (devices & 0x10)
1237                 interface->capability |= ACER_CAP_BLUETOOTH;
1238
1239         if (!(devices & 0x20))
1240                 max_brightness = 0x9;
1241
1242         kfree(out.pointer);
1243         return status;
1244 }
1245
1246 static struct wmi_interface wmid_interface = {
1247         .type = ACER_WMID,
1248 };
1249
1250 static struct wmi_interface wmid_v2_interface = {
1251         .type = ACER_WMID_v2,
1252 };
1253
1254 /*
1255  * Generic Device (interface-independent)
1256  */
1257
1258 static acpi_status get_u32(u32 *value, u32 cap)
1259 {
1260         acpi_status status = AE_ERROR;
1261
1262         switch (interface->type) {
1263         case ACER_AMW0:
1264                 status = AMW0_get_u32(value, cap);
1265                 break;
1266         case ACER_AMW0_V2:
1267                 if (cap == ACER_CAP_MAILLED) {
1268                         status = AMW0_get_u32(value, cap);
1269                         break;
1270                 }
1271         case ACER_WMID:
1272                 status = WMID_get_u32(value, cap);
1273                 break;
1274         case ACER_WMID_v2:
1275                 if (cap & (ACER_CAP_WIRELESS |
1276                            ACER_CAP_BLUETOOTH |
1277                            ACER_CAP_THREEG))
1278                         status = wmid_v2_get_u32(value, cap);
1279                 else if (wmi_has_guid(WMID_GUID2))
1280                         status = WMID_get_u32(value, cap);
1281                 break;
1282         }
1283
1284         return status;
1285 }
1286
1287 static acpi_status set_u32(u32 value, u32 cap)
1288 {
1289         acpi_status status;
1290
1291         if (interface->capability & cap) {
1292                 switch (interface->type) {
1293                 case ACER_AMW0:
1294                         return AMW0_set_u32(value, cap);
1295                 case ACER_AMW0_V2:
1296                         if (cap == ACER_CAP_MAILLED)
1297                                 return AMW0_set_u32(value, cap);
1298
1299                         /*
1300                          * On some models, some WMID methods don't toggle
1301                          * properly. For those cases, we want to run the AMW0
1302                          * method afterwards to be certain we've really toggled
1303                          * the device state.
1304                          */
1305                         if (cap == ACER_CAP_WIRELESS ||
1306                                 cap == ACER_CAP_BLUETOOTH) {
1307                                 status = WMID_set_u32(value, cap);
1308                                 if (ACPI_FAILURE(status))
1309                                         return status;
1310
1311                                 return AMW0_set_u32(value, cap);
1312                         }
1313                 case ACER_WMID:
1314                         return WMID_set_u32(value, cap);
1315                 case ACER_WMID_v2:
1316                         if (cap & (ACER_CAP_WIRELESS |
1317                                    ACER_CAP_BLUETOOTH |
1318                                    ACER_CAP_THREEG))
1319                                 return wmid_v2_set_u32(value, cap);
1320                         else if (wmi_has_guid(WMID_GUID2))
1321                                 return WMID_set_u32(value, cap);
1322                 default:
1323                         return AE_BAD_PARAMETER;
1324                 }
1325         }
1326         return AE_BAD_PARAMETER;
1327 }
1328
1329 static void __init acer_commandline_init(void)
1330 {
1331         /*
1332          * These will all fail silently if the value given is invalid, or the
1333          * capability isn't available on the given interface
1334          */
1335         if (mailled >= 0)
1336                 set_u32(mailled, ACER_CAP_MAILLED);
1337         if (!has_type_aa && threeg >= 0)
1338                 set_u32(threeg, ACER_CAP_THREEG);
1339         if (brightness >= 0)
1340                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1341 }
1342
1343 /*
1344  * LED device (Mail LED only, no other LEDs known yet)
1345  */
1346 static void mail_led_set(struct led_classdev *led_cdev,
1347 enum led_brightness value)
1348 {
1349         set_u32(value, ACER_CAP_MAILLED);
1350 }
1351
1352 static struct led_classdev mail_led = {
1353         .name = "acer-wmi::mail",
1354         .brightness_set = mail_led_set,
1355 };
1356
1357 static int acer_led_init(struct device *dev)
1358 {
1359         return led_classdev_register(dev, &mail_led);
1360 }
1361
1362 static void acer_led_exit(void)
1363 {
1364         set_u32(LED_OFF, ACER_CAP_MAILLED);
1365         led_classdev_unregister(&mail_led);
1366 }
1367
1368 /*
1369  * Backlight device
1370  */
1371 static struct backlight_device *acer_backlight_device;
1372
1373 static int read_brightness(struct backlight_device *bd)
1374 {
1375         u32 value;
1376         get_u32(&value, ACER_CAP_BRIGHTNESS);
1377         return value;
1378 }
1379
1380 static int update_bl_status(struct backlight_device *bd)
1381 {
1382         int intensity = bd->props.brightness;
1383
1384         if (bd->props.power != FB_BLANK_UNBLANK)
1385                 intensity = 0;
1386         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1387                 intensity = 0;
1388
1389         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1390
1391         return 0;
1392 }
1393
1394 static const struct backlight_ops acer_bl_ops = {
1395         .get_brightness = read_brightness,
1396         .update_status = update_bl_status,
1397 };
1398
1399 static int acer_backlight_init(struct device *dev)
1400 {
1401         struct backlight_properties props;
1402         struct backlight_device *bd;
1403
1404         memset(&props, 0, sizeof(struct backlight_properties));
1405         props.type = BACKLIGHT_PLATFORM;
1406         props.max_brightness = max_brightness;
1407         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1408                                        &props);
1409         if (IS_ERR(bd)) {
1410                 pr_err("Could not register Acer backlight device\n");
1411                 acer_backlight_device = NULL;
1412                 return PTR_ERR(bd);
1413         }
1414
1415         acer_backlight_device = bd;
1416
1417         bd->props.power = FB_BLANK_UNBLANK;
1418         bd->props.brightness = read_brightness(bd);
1419         backlight_update_status(bd);
1420         return 0;
1421 }
1422
1423 static void acer_backlight_exit(void)
1424 {
1425         backlight_device_unregister(acer_backlight_device);
1426 }
1427
1428 /*
1429  * Accelerometer device
1430  */
1431 static acpi_handle gsensor_handle;
1432
1433 static int acer_gsensor_init(void)
1434 {
1435         acpi_status status;
1436         struct acpi_buffer output;
1437         union acpi_object out_obj;
1438
1439         output.length = sizeof(out_obj);
1440         output.pointer = &out_obj;
1441         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1442         if (ACPI_FAILURE(status))
1443                 return -1;
1444
1445         return 0;
1446 }
1447
1448 static int acer_gsensor_open(struct input_dev *input)
1449 {
1450         return acer_gsensor_init();
1451 }
1452
1453 static int acer_gsensor_event(void)
1454 {
1455         acpi_status status;
1456         struct acpi_buffer output;
1457         union acpi_object out_obj[5];
1458
1459         if (!has_cap(ACER_CAP_ACCEL))
1460                 return -1;
1461
1462         output.length = sizeof(out_obj);
1463         output.pointer = out_obj;
1464
1465         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1466         if (ACPI_FAILURE(status))
1467                 return -1;
1468
1469         if (out_obj->package.count != 4)
1470                 return -1;
1471
1472         input_report_abs(acer_wmi_accel_dev, ABS_X,
1473                 (s16)out_obj->package.elements[0].integer.value);
1474         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1475                 (s16)out_obj->package.elements[1].integer.value);
1476         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1477                 (s16)out_obj->package.elements[2].integer.value);
1478         input_sync(acer_wmi_accel_dev);
1479         return 0;
1480 }
1481
1482 /*
1483  * Rfkill devices
1484  */
1485 static void acer_rfkill_update(struct work_struct *ignored);
1486 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1487 static void acer_rfkill_update(struct work_struct *ignored)
1488 {
1489         u32 state;
1490         acpi_status status;
1491
1492         if (has_cap(ACER_CAP_WIRELESS)) {
1493                 status = get_u32(&state, ACER_CAP_WIRELESS);
1494                 if (ACPI_SUCCESS(status)) {
1495                         if (quirks->wireless == 3)
1496                                 rfkill_set_hw_state(wireless_rfkill, !state);
1497                         else
1498                                 rfkill_set_sw_state(wireless_rfkill, !state);
1499                 }
1500         }
1501
1502         if (has_cap(ACER_CAP_BLUETOOTH)) {
1503                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1504                 if (ACPI_SUCCESS(status))
1505                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1506         }
1507
1508         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1509                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1510                 if (ACPI_SUCCESS(status))
1511                         rfkill_set_sw_state(threeg_rfkill, !state);
1512         }
1513
1514         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1515 }
1516
1517 static int acer_rfkill_set(void *data, bool blocked)
1518 {
1519         acpi_status status;
1520         u32 cap = (unsigned long)data;
1521
1522         if (rfkill_inited) {
1523                 status = set_u32(!blocked, cap);
1524                 if (ACPI_FAILURE(status))
1525                         return -ENODEV;
1526         }
1527
1528         return 0;
1529 }
1530
1531 static const struct rfkill_ops acer_rfkill_ops = {
1532         .set_block = acer_rfkill_set,
1533 };
1534
1535 static struct rfkill *acer_rfkill_register(struct device *dev,
1536                                            enum rfkill_type type,
1537                                            char *name, u32 cap)
1538 {
1539         int err;
1540         struct rfkill *rfkill_dev;
1541         u32 state;
1542         acpi_status status;
1543
1544         rfkill_dev = rfkill_alloc(name, dev, type,
1545                                   &acer_rfkill_ops,
1546                                   (void *)(unsigned long)cap);
1547         if (!rfkill_dev)
1548                 return ERR_PTR(-ENOMEM);
1549
1550         status = get_u32(&state, cap);
1551
1552         err = rfkill_register(rfkill_dev);
1553         if (err) {
1554                 rfkill_destroy(rfkill_dev);
1555                 return ERR_PTR(err);
1556         }
1557
1558         if (ACPI_SUCCESS(status))
1559                 rfkill_set_sw_state(rfkill_dev, !state);
1560
1561         return rfkill_dev;
1562 }
1563
1564 static int acer_rfkill_init(struct device *dev)
1565 {
1566         int err;
1567
1568         if (has_cap(ACER_CAP_WIRELESS)) {
1569                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1570                         "acer-wireless", ACER_CAP_WIRELESS);
1571                 if (IS_ERR(wireless_rfkill)) {
1572                         err = PTR_ERR(wireless_rfkill);
1573                         goto error_wireless;
1574                 }
1575         }
1576
1577         if (has_cap(ACER_CAP_BLUETOOTH)) {
1578                 bluetooth_rfkill = acer_rfkill_register(dev,
1579                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1580                         ACER_CAP_BLUETOOTH);
1581                 if (IS_ERR(bluetooth_rfkill)) {
1582                         err = PTR_ERR(bluetooth_rfkill);
1583                         goto error_bluetooth;
1584                 }
1585         }
1586
1587         if (has_cap(ACER_CAP_THREEG)) {
1588                 threeg_rfkill = acer_rfkill_register(dev,
1589                         RFKILL_TYPE_WWAN, "acer-threeg",
1590                         ACER_CAP_THREEG);
1591                 if (IS_ERR(threeg_rfkill)) {
1592                         err = PTR_ERR(threeg_rfkill);
1593                         goto error_threeg;
1594                 }
1595         }
1596
1597         rfkill_inited = true;
1598
1599         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1600             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1601                 schedule_delayed_work(&acer_rfkill_work,
1602                         round_jiffies_relative(HZ));
1603
1604         return 0;
1605
1606 error_threeg:
1607         if (has_cap(ACER_CAP_BLUETOOTH)) {
1608                 rfkill_unregister(bluetooth_rfkill);
1609                 rfkill_destroy(bluetooth_rfkill);
1610         }
1611 error_bluetooth:
1612         if (has_cap(ACER_CAP_WIRELESS)) {
1613                 rfkill_unregister(wireless_rfkill);
1614                 rfkill_destroy(wireless_rfkill);
1615         }
1616 error_wireless:
1617         return err;
1618 }
1619
1620 static void acer_rfkill_exit(void)
1621 {
1622         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1623             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1624                 cancel_delayed_work_sync(&acer_rfkill_work);
1625
1626         if (has_cap(ACER_CAP_WIRELESS)) {
1627                 rfkill_unregister(wireless_rfkill);
1628                 rfkill_destroy(wireless_rfkill);
1629         }
1630
1631         if (has_cap(ACER_CAP_BLUETOOTH)) {
1632                 rfkill_unregister(bluetooth_rfkill);
1633                 rfkill_destroy(bluetooth_rfkill);
1634         }
1635
1636         if (has_cap(ACER_CAP_THREEG)) {
1637                 rfkill_unregister(threeg_rfkill);
1638                 rfkill_destroy(threeg_rfkill);
1639         }
1640         return;
1641 }
1642
1643 /*
1644  * sysfs interface
1645  */
1646 static ssize_t show_bool_threeg(struct device *dev,
1647         struct device_attribute *attr, char *buf)
1648 {
1649         u32 result; \
1650         acpi_status status;
1651
1652         pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1653                 current->comm);
1654         status = get_u32(&result, ACER_CAP_THREEG);
1655         if (ACPI_SUCCESS(status))
1656                 return sprintf(buf, "%u\n", result);
1657         return sprintf(buf, "Read error\n");
1658 }
1659
1660 static ssize_t set_bool_threeg(struct device *dev,
1661         struct device_attribute *attr, const char *buf, size_t count)
1662 {
1663         u32 tmp = simple_strtoul(buf, NULL, 10);
1664         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1665         pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1666                 current->comm);
1667         if (ACPI_FAILURE(status))
1668                 return -EINVAL;
1669         return count;
1670 }
1671 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1672         set_bool_threeg);
1673
1674 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1675         char *buf)
1676 {
1677         pr_info("This interface sysfs will be removed in 2012 - used by: %s\n",
1678                 current->comm);
1679         switch (interface->type) {
1680         case ACER_AMW0:
1681                 return sprintf(buf, "AMW0\n");
1682         case ACER_AMW0_V2:
1683                 return sprintf(buf, "AMW0 v2\n");
1684         case ACER_WMID:
1685                 return sprintf(buf, "WMID\n");
1686         case ACER_WMID_v2:
1687                 return sprintf(buf, "WMID v2\n");
1688         default:
1689                 return sprintf(buf, "Error!\n");
1690         }
1691 }
1692
1693 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1694
1695 static void acer_wmi_notify(u32 value, void *context)
1696 {
1697         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1698         union acpi_object *obj;
1699         struct event_return_value return_value;
1700         acpi_status status;
1701         u16 device_state;
1702         const struct key_entry *key;
1703         u32 scancode;
1704
1705         status = wmi_get_event_data(value, &response);
1706         if (status != AE_OK) {
1707                 pr_warn("bad event status 0x%x\n", status);
1708                 return;
1709         }
1710
1711         obj = (union acpi_object *)response.pointer;
1712
1713         if (!obj)
1714                 return;
1715         if (obj->type != ACPI_TYPE_BUFFER) {
1716                 pr_warn("Unknown response received %d\n", obj->type);
1717                 kfree(obj);
1718                 return;
1719         }
1720         if (obj->buffer.length != 8) {
1721                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1722                 kfree(obj);
1723                 return;
1724         }
1725
1726         return_value = *((struct event_return_value *)obj->buffer.pointer);
1727         kfree(obj);
1728
1729         switch (return_value.function) {
1730         case WMID_HOTKEY_EVENT:
1731                 device_state = return_value.device_state;
1732                 pr_debug("device state: 0x%x\n", device_state);
1733
1734                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1735                                                         return_value.key_num);
1736                 if (!key) {
1737                         pr_warn("Unknown key number - 0x%x\n",
1738                                 return_value.key_num);
1739                 } else {
1740                         scancode = return_value.key_num;
1741                         switch (key->keycode) {
1742                         case KEY_WLAN:
1743                         case KEY_BLUETOOTH:
1744                                 if (has_cap(ACER_CAP_WIRELESS))
1745                                         rfkill_set_sw_state(wireless_rfkill,
1746                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1747                                 if (has_cap(ACER_CAP_THREEG))
1748                                         rfkill_set_sw_state(threeg_rfkill,
1749                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1750                                 if (has_cap(ACER_CAP_BLUETOOTH))
1751                                         rfkill_set_sw_state(bluetooth_rfkill,
1752                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1753                                 break;
1754                         case KEY_TOUCHPAD_TOGGLE:
1755                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1756                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1757                         }
1758                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1759                 }
1760                 break;
1761         case WMID_ACCEL_EVENT:
1762                 acer_gsensor_event();
1763                 break;
1764         default:
1765                 pr_warn("Unknown function number - %d - %d\n",
1766                         return_value.function, return_value.key_num);
1767                 break;
1768         }
1769 }
1770
1771 static acpi_status
1772 wmid3_set_lm_mode(struct lm_input_params *params,
1773                   struct lm_return_value *return_value)
1774 {
1775         acpi_status status;
1776         union acpi_object *obj;
1777
1778         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1779         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1780
1781         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1782         if (ACPI_FAILURE(status))
1783                 return status;
1784
1785         obj = output.pointer;
1786
1787         if (!obj)
1788                 return AE_ERROR;
1789         else if (obj->type != ACPI_TYPE_BUFFER) {
1790                 kfree(obj);
1791                 return AE_ERROR;
1792         }
1793         if (obj->buffer.length != 4) {
1794                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1795                 kfree(obj);
1796                 return AE_ERROR;
1797         }
1798
1799         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1800         kfree(obj);
1801
1802         return status;
1803 }
1804
1805 static int acer_wmi_enable_ec_raw(void)
1806 {
1807         struct lm_return_value return_value;
1808         acpi_status status;
1809         struct lm_input_params params = {
1810                 .function_num = 0x1,
1811                 .commun_devices = 0xFFFF,
1812                 .devices = 0xFFFF,
1813                 .lm_status = 0x00,            /* Launch Manager Deactive */
1814         };
1815
1816         status = wmid3_set_lm_mode(&params, &return_value);
1817
1818         if (return_value.error_code || return_value.ec_return_value)
1819                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1820                         return_value.error_code,
1821                         return_value.ec_return_value);
1822         else
1823                 pr_info("Enabled EC raw mode\n");
1824
1825         return status;
1826 }
1827
1828 static int acer_wmi_enable_lm(void)
1829 {
1830         struct lm_return_value return_value;
1831         acpi_status status;
1832         struct lm_input_params params = {
1833                 .function_num = 0x1,
1834                 .commun_devices = 0xFFFF,
1835                 .devices = 0xFFFF,
1836                 .lm_status = 0x01,            /* Launch Manager Active */
1837         };
1838
1839         status = wmid3_set_lm_mode(&params, &return_value);
1840
1841         if (return_value.error_code || return_value.ec_return_value)
1842                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1843                         return_value.error_code,
1844                         return_value.ec_return_value);
1845
1846         return status;
1847 }
1848
1849 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1850                                                 void *ctx, void **retval)
1851 {
1852         *(acpi_handle *)retval = ah;
1853         return AE_OK;
1854 }
1855
1856 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1857                                         acpi_handle *ah)
1858 {
1859         acpi_status status;
1860         acpi_handle handle;
1861
1862         BUG_ON(!name || !ah);
1863
1864         handle = NULL;
1865         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1866                                         (void *)name, &handle);
1867
1868         if (ACPI_SUCCESS(status)) {
1869                 *ah = handle;
1870                 return 0;
1871         } else {
1872                 return -ENODEV;
1873         }
1874 }
1875
1876 static int __init acer_wmi_accel_setup(void)
1877 {
1878         int err;
1879
1880         err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1881         if (err)
1882                 return err;
1883
1884         interface->capability |= ACER_CAP_ACCEL;
1885
1886         acer_wmi_accel_dev = input_allocate_device();
1887         if (!acer_wmi_accel_dev)
1888                 return -ENOMEM;
1889
1890         acer_wmi_accel_dev->open = acer_gsensor_open;
1891
1892         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1893         acer_wmi_accel_dev->phys = "wmi/input1";
1894         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1895         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1896         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1897         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1898         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1899
1900         err = input_register_device(acer_wmi_accel_dev);
1901         if (err)
1902                 goto err_free_dev;
1903
1904         return 0;
1905
1906 err_free_dev:
1907         input_free_device(acer_wmi_accel_dev);
1908         return err;
1909 }
1910
1911 static void acer_wmi_accel_destroy(void)
1912 {
1913         input_unregister_device(acer_wmi_accel_dev);
1914 }
1915
1916 static int __init acer_wmi_input_setup(void)
1917 {
1918         acpi_status status;
1919         int err;
1920
1921         acer_wmi_input_dev = input_allocate_device();
1922         if (!acer_wmi_input_dev)
1923                 return -ENOMEM;
1924
1925         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1926         acer_wmi_input_dev->phys = "wmi/input0";
1927         acer_wmi_input_dev->id.bustype = BUS_HOST;
1928
1929         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1930         if (err)
1931                 goto err_free_dev;
1932
1933         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1934                                                 acer_wmi_notify, NULL);
1935         if (ACPI_FAILURE(status)) {
1936                 err = -EIO;
1937                 goto err_free_keymap;
1938         }
1939
1940         err = input_register_device(acer_wmi_input_dev);
1941         if (err)
1942                 goto err_uninstall_notifier;
1943
1944         return 0;
1945
1946 err_uninstall_notifier:
1947         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1948 err_free_keymap:
1949         sparse_keymap_free(acer_wmi_input_dev);
1950 err_free_dev:
1951         input_free_device(acer_wmi_input_dev);
1952         return err;
1953 }
1954
1955 static void acer_wmi_input_destroy(void)
1956 {
1957         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1958         sparse_keymap_free(acer_wmi_input_dev);
1959         input_unregister_device(acer_wmi_input_dev);
1960 }
1961
1962 /*
1963  * debugfs functions
1964  */
1965 static u32 get_wmid_devices(void)
1966 {
1967         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1968         union acpi_object *obj;
1969         acpi_status status;
1970         u32 devices = 0;
1971
1972         status = wmi_query_block(WMID_GUID2, 1, &out);
1973         if (ACPI_FAILURE(status))
1974                 return 0;
1975
1976         obj = (union acpi_object *) out.pointer;
1977         if (obj) {
1978                 if (obj->type == ACPI_TYPE_BUFFER &&
1979                         (obj->buffer.length == sizeof(u32) ||
1980                         obj->buffer.length == sizeof(u64))) {
1981                         devices = *((u32 *) obj->buffer.pointer);
1982                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1983                         devices = (u32) obj->integer.value;
1984                 }
1985         }
1986
1987         kfree(out.pointer);
1988         return devices;
1989 }
1990
1991 /*
1992  * Platform device
1993  */
1994 static int acer_platform_probe(struct platform_device *device)
1995 {
1996         int err;
1997
1998         if (has_cap(ACER_CAP_MAILLED)) {
1999                 err = acer_led_init(&device->dev);
2000                 if (err)
2001                         goto error_mailled;
2002         }
2003
2004         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2005                 err = acer_backlight_init(&device->dev);
2006                 if (err)
2007                         goto error_brightness;
2008         }
2009
2010         err = acer_rfkill_init(&device->dev);
2011         if (err)
2012                 goto error_rfkill;
2013
2014         return err;
2015
2016 error_rfkill:
2017         if (has_cap(ACER_CAP_BRIGHTNESS))
2018                 acer_backlight_exit();
2019 error_brightness:
2020         if (has_cap(ACER_CAP_MAILLED))
2021                 acer_led_exit();
2022 error_mailled:
2023         return err;
2024 }
2025
2026 static int acer_platform_remove(struct platform_device *device)
2027 {
2028         if (has_cap(ACER_CAP_MAILLED))
2029                 acer_led_exit();
2030         if (has_cap(ACER_CAP_BRIGHTNESS))
2031                 acer_backlight_exit();
2032
2033         acer_rfkill_exit();
2034         return 0;
2035 }
2036
2037 static int acer_suspend(struct device *dev)
2038 {
2039         u32 value;
2040         struct acer_data *data = &interface->data;
2041
2042         if (!data)
2043                 return -ENOMEM;
2044
2045         if (has_cap(ACER_CAP_MAILLED)) {
2046                 get_u32(&value, ACER_CAP_MAILLED);
2047                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2048                 data->mailled = value;
2049         }
2050
2051         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2052                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2053                 data->brightness = value;
2054         }
2055
2056         return 0;
2057 }
2058
2059 static int acer_resume(struct device *dev)
2060 {
2061         struct acer_data *data = &interface->data;
2062
2063         if (!data)
2064                 return -ENOMEM;
2065
2066         if (has_cap(ACER_CAP_MAILLED))
2067                 set_u32(data->mailled, ACER_CAP_MAILLED);
2068
2069         if (has_cap(ACER_CAP_BRIGHTNESS))
2070                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2071
2072         if (has_cap(ACER_CAP_ACCEL))
2073                 acer_gsensor_init();
2074
2075         return 0;
2076 }
2077
2078 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2079
2080 static void acer_platform_shutdown(struct platform_device *device)
2081 {
2082         struct acer_data *data = &interface->data;
2083
2084         if (!data)
2085                 return;
2086
2087         if (has_cap(ACER_CAP_MAILLED))
2088                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2089 }
2090
2091 static struct platform_driver acer_platform_driver = {
2092         .driver = {
2093                 .name = "acer-wmi",
2094                 .owner = THIS_MODULE,
2095                 .pm = &acer_pm,
2096         },
2097         .probe = acer_platform_probe,
2098         .remove = acer_platform_remove,
2099         .shutdown = acer_platform_shutdown,
2100 };
2101
2102 static struct platform_device *acer_platform_device;
2103
2104 static int remove_sysfs(struct platform_device *device)
2105 {
2106         if (has_cap(ACER_CAP_THREEG))
2107                 device_remove_file(&device->dev, &dev_attr_threeg);
2108
2109         device_remove_file(&device->dev, &dev_attr_interface);
2110
2111         return 0;
2112 }
2113
2114 static int create_sysfs(void)
2115 {
2116         int retval = -ENOMEM;
2117
2118         if (has_cap(ACER_CAP_THREEG)) {
2119                 retval = device_create_file(&acer_platform_device->dev,
2120                         &dev_attr_threeg);
2121                 if (retval)
2122                         goto error_sysfs;
2123         }
2124
2125         retval = device_create_file(&acer_platform_device->dev,
2126                 &dev_attr_interface);
2127         if (retval)
2128                 goto error_sysfs;
2129
2130         return 0;
2131
2132 error_sysfs:
2133                 remove_sysfs(acer_platform_device);
2134         return retval;
2135 }
2136
2137 static void remove_debugfs(void)
2138 {
2139         debugfs_remove(interface->debug.devices);
2140         debugfs_remove(interface->debug.root);
2141 }
2142
2143 static int create_debugfs(void)
2144 {
2145         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2146         if (!interface->debug.root) {
2147                 pr_err("Failed to create debugfs directory");
2148                 return -ENOMEM;
2149         }
2150
2151         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2152                                         interface->debug.root,
2153                                         &interface->debug.wmid_devices);
2154         if (!interface->debug.devices)
2155                 goto error_debugfs;
2156
2157         return 0;
2158
2159 error_debugfs:
2160         remove_debugfs();
2161         return -ENOMEM;
2162 }
2163
2164 static int __init acer_wmi_init(void)
2165 {
2166         int err;
2167
2168         pr_info("Acer Laptop ACPI-WMI Extras\n");
2169
2170         if (dmi_check_system(acer_blacklist)) {
2171                 pr_info("Blacklisted hardware detected - not loading\n");
2172                 return -ENODEV;
2173         }
2174
2175         find_quirks();
2176
2177         /*
2178          * Detect which ACPI-WMI interface we're using.
2179          */
2180         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2181                 interface = &AMW0_V2_interface;
2182
2183         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2184                 interface = &wmid_interface;
2185
2186         if (wmi_has_guid(WMID_GUID3))
2187                 interface = &wmid_v2_interface;
2188
2189         if (interface)
2190                 dmi_walk(type_aa_dmi_decode, NULL);
2191
2192         if (wmi_has_guid(WMID_GUID2) && interface) {
2193                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2194                         pr_err("Unable to detect available WMID devices\n");
2195                         return -ENODEV;
2196                 }
2197                 /* WMID always provides brightness methods */
2198                 interface->capability |= ACER_CAP_BRIGHTNESS;
2199         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2200                 pr_err("No WMID device detection method found\n");
2201                 return -ENODEV;
2202         }
2203
2204         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2205                 interface = &AMW0_interface;
2206
2207                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2208                         pr_err("Unable to detect available AMW0 devices\n");
2209                         return -ENODEV;
2210                 }
2211         }
2212
2213         if (wmi_has_guid(AMW0_GUID1))
2214                 AMW0_find_mailled();
2215
2216         if (!interface) {
2217                 pr_err("No or unsupported WMI interface, unable to load\n");
2218                 return -ENODEV;
2219         }
2220
2221         set_quirks();
2222
2223         if (dmi_check_system(video_vendor_dmi_table))
2224                 acpi_video_dmi_promote_vendor();
2225         if (acpi_video_backlight_support()) {
2226                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2227                 pr_info("Brightness must be controlled by acpi video driver\n");
2228         } else {
2229                 pr_info("Disabling ACPI video driver\n");
2230                 acpi_video_unregister();
2231         }
2232
2233         if (wmi_has_guid(WMID_GUID3)) {
2234                 if (ec_raw_mode) {
2235                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2236                                 pr_err("Cannot enable EC raw mode\n");
2237                                 return -ENODEV;
2238                         }
2239                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2240                         pr_err("Cannot enable Launch Manager mode\n");
2241                         return -ENODEV;
2242                 }
2243         } else if (ec_raw_mode) {
2244                 pr_info("No WMID EC raw mode enable method\n");
2245         }
2246
2247         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2248                 err = acer_wmi_input_setup();
2249                 if (err)
2250                         return err;
2251         }
2252
2253         acer_wmi_accel_setup();
2254
2255         err = platform_driver_register(&acer_platform_driver);
2256         if (err) {
2257                 pr_err("Unable to register platform driver\n");
2258                 goto error_platform_register;
2259         }
2260
2261         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2262         if (!acer_platform_device) {
2263                 err = -ENOMEM;
2264                 goto error_device_alloc;
2265         }
2266
2267         err = platform_device_add(acer_platform_device);
2268         if (err)
2269                 goto error_device_add;
2270
2271         err = create_sysfs();
2272         if (err)
2273                 goto error_create_sys;
2274
2275         if (wmi_has_guid(WMID_GUID2)) {
2276                 interface->debug.wmid_devices = get_wmid_devices();
2277                 err = create_debugfs();
2278                 if (err)
2279                         goto error_create_debugfs;
2280         }
2281
2282         /* Override any initial settings with values from the commandline */
2283         acer_commandline_init();
2284
2285         return 0;
2286
2287 error_create_debugfs:
2288         remove_sysfs(acer_platform_device);
2289 error_create_sys:
2290         platform_device_del(acer_platform_device);
2291 error_device_add:
2292         platform_device_put(acer_platform_device);
2293 error_device_alloc:
2294         platform_driver_unregister(&acer_platform_driver);
2295 error_platform_register:
2296         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2297                 acer_wmi_input_destroy();
2298         if (has_cap(ACER_CAP_ACCEL))
2299                 acer_wmi_accel_destroy();
2300
2301         return err;
2302 }
2303
2304 static void __exit acer_wmi_exit(void)
2305 {
2306         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2307                 acer_wmi_input_destroy();
2308
2309         if (has_cap(ACER_CAP_ACCEL))
2310                 acer_wmi_accel_destroy();
2311
2312         remove_sysfs(acer_platform_device);
2313         remove_debugfs();
2314         platform_device_unregister(acer_platform_device);
2315         platform_driver_unregister(&acer_platform_driver);
2316
2317         pr_info("Acer Laptop WMI Extras unloaded\n");
2318         return;
2319 }
2320
2321 module_init(acer_wmi_init);
2322 module_exit(acer_wmi_exit);