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                  * Note no video_set_backlight_video_vendor, we must use the
 578                  * acer interface, as there is no native backlight interface.
 579                  */
 580                 .ident = "Acer KAV80",
 581                 .matches = {
 582                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 583                         DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
 584                 },
 585         },
 586         {}
 587 };
 588
 589 /* Find which quirks are needed for a particular vendor/ model pair */
 590 static void find_quirks(void)
 591 {
 592         if (!force_series) {
 593                 dmi_check_system(acer_quirks);
 594         } else if (force_series == 2490) {
 595                 quirks = &quirk_acer_travelmate_2490;
 596         }
 597
 598         if (quirks == NULL)
 599                 quirks = &quirk_unknown;
 600
 601         set_quirks();
 602 }
 603
 604 /*
 605  * General interface convenience methods
 606  */
 607
 608 static bool has_cap(u32 cap)
 609 {
 610         if ((interface->capability & cap) != 0)
 611                 return 1;
 612
 613         return 0;
 614 }
 615
 616 /*
 617  * AMW0 (V1) interface
 618  */
 619 struct wmab_args {
 620         u32 eax;
 621         u32 ebx;
 622         u32 ecx;
 623         u32 edx;
 624 };
 625
 626 struct wmab_ret {
 627         u32 eax;
 628         u32 ebx;
 629         u32 ecx;
 630         u32 edx;
 631         u32 eex;
 632 };
 633
 634 static acpi_status wmab_execute(struct wmab_args *regbuf,
 635 struct acpi_buffer *result)
 636 {
 637         struct acpi_buffer input;
 638         acpi_status status;
 639         input.length = sizeof(struct wmab_args);
 640         input.pointer = (u8 *)regbuf;
 641
 642         status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
 643
 644         return status;
 645 }
 646
 647 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 648 {
 649         int err;
 650         u8 result;
 651
 652         switch (cap) {
 653         case ACER_CAP_MAILLED:
 654                 switch (quirks->mailled) {
 655                 default:
 656                         err = ec_read(0xA, &result);
 657                         if (err)
 658                                 return AE_ERROR;
 659                         *value = (result >> 7) & 0x1;
 660                         return AE_OK;
 661                 }
 662                 break;
 663         case ACER_CAP_WIRELESS:
 664                 switch (quirks->wireless) {
 665                 case 1:
 666                         err = ec_read(0x7B, &result);
 667                         if (err)
 668                                 return AE_ERROR;
 669                         *value = result & 0x1;
 670                         return AE_OK;
 671                 case 2:
 672                         err = ec_read(0x71, &result);
 673                         if (err)
 674                                 return AE_ERROR;
 675                         *value = result & 0x1;
 676                         return AE_OK;
 677                 case 3:
 678                         err = ec_read(0x78, &result);
 679                         if (err)
 680                                 return AE_ERROR;
 681                         *value = result & 0x1;
 682                         return AE_OK;
 683                 default:
 684                         err = ec_read(0xA, &result);
 685                         if (err)
 686                                 return AE_ERROR;
 687                         *value = (result >> 2) & 0x1;
 688                         return AE_OK;
 689                 }
 690                 break;
 691         case ACER_CAP_BLUETOOTH:
 692                 switch (quirks->bluetooth) {
 693                 default:
 694                         err = ec_read(0xA, &result);
 695                         if (err)
 696                                 return AE_ERROR;
 697                         *value = (result >> 4) & 0x1;
 698                         return AE_OK;
 699                 }
 700                 break;
 701         case ACER_CAP_BRIGHTNESS:
 702                 switch (quirks->brightness) {
 703                 default:
 704                         err = ec_read(0x83, &result);
 705                         if (err)
 706                                 return AE_ERROR;
 707                         *value = result;
 708                         return AE_OK;
 709                 }
 710                 break;
 711         default:
 712                 return AE_ERROR;
 713         }
 714         return AE_OK;
 715 }
 716
 717 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 718 {
 719         struct wmab_args args;
 720
 721         args.eax = ACER_AMW0_WRITE;
 722         args.ebx = value ? (1<<8) : 0;
 723         args.ecx = args.edx = 0;
 724
 725         switch (cap) {
 726         case ACER_CAP_MAILLED:
 727                 if (value > 1)
 728                         return AE_BAD_PARAMETER;
 729                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 730                 break;
 731         case ACER_CAP_WIRELESS:
 732                 if (value > 1)
 733                         return AE_BAD_PARAMETER;
 734                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 735                 break;
 736         case ACER_CAP_BLUETOOTH:
 737                 if (value > 1)
 738                         return AE_BAD_PARAMETER;
 739                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 740                 break;
 741         case ACER_CAP_BRIGHTNESS:
 742                 if (value > max_brightness)
 743                         return AE_BAD_PARAMETER;
 744                 switch (quirks->brightness) {
 745                 default:
 746                         return ec_write(0x83, value);
 747                         break;
 748                 }
 749         default:
 750                 return AE_ERROR;
 751         }
 752
 753         /* Actually do the set */
 754         return wmab_execute(&args, NULL);
 755 }
 756
 757 static acpi_status AMW0_find_mailled(void)
 758 {
 759         struct wmab_args args;
 760         struct wmab_ret ret;
 761         acpi_status status = AE_OK;
 762         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 763         union acpi_object *obj;
 764
 765         args.eax = 0x86;
 766         args.ebx = args.ecx = args.edx = 0;
 767
 768         status = wmab_execute(&args, &out);
 769         if (ACPI_FAILURE(status))
 770                 return status;
 771
 772         obj = (union acpi_object *) out.pointer;
 773         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 774         obj->buffer.length == sizeof(struct wmab_ret)) {
 775                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 776         } else {
 777                 kfree(out.pointer);
 778                 return AE_ERROR;
 779         }
 780
 781         if (ret.eex & 0x1)
 782                 interface->capability |= ACER_CAP_MAILLED;
 783
 784         kfree(out.pointer);
 785
 786         return AE_OK;
 787 }
 788
 789 static int AMW0_set_cap_acpi_check_device_found;
 790
 791 static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
 792         u32 level, void *context, void **retval)
 793 {
 794         AMW0_set_cap_acpi_check_device_found = 1;
 795         return AE_OK;
 796 }
 797
 798 static const struct acpi_device_id norfkill_ids[] = {
 799         { "VPC2004", 0},
 800         { "IBM0068", 0},
 801         { "LEN0068", 0},
 802         { "SNY5001", 0},        /* sony-laptop in charge */
 803         { "", 0},
 804 };
 805
 806 static int AMW0_set_cap_acpi_check_device(void)
 807 {
 808         const struct acpi_device_id *id;
 809
 810         for (id = norfkill_ids; id->id[0]; id++)
 811                 acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
 812                                 NULL, NULL);
 813         return AMW0_set_cap_acpi_check_device_found;
 814 }
 815
 816 static acpi_status AMW0_set_capabilities(void)
 817 {
 818         struct wmab_args args;
 819         struct wmab_ret ret;
 820         acpi_status status;
 821         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 822         union acpi_object *obj;
 823
 824         /*
 825          * On laptops with this strange GUID (non Acer), normal probing doesn't
 826          * work.
 827          */
 828         if (wmi_has_guid(AMW0_GUID2)) {
 829                 if ((quirks != &quirk_unknown) ||
 830                     !AMW0_set_cap_acpi_check_device())
 831                         interface->capability |= ACER_CAP_WIRELESS;
 832                 return AE_OK;
 833         }
 834
 835         args.eax = ACER_AMW0_WRITE;
 836         args.ecx = args.edx = 0;
 837
 838         args.ebx = 0xa2 << 8;
 839         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 840
 841         status = wmab_execute(&args, &out);
 842         if (ACPI_FAILURE(status))
 843                 return status;
 844
 845         obj = out.pointer;
 846         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 847         obj->buffer.length == sizeof(struct wmab_ret)) {
 848                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 849         } else {
 850                 status = AE_ERROR;
 851                 goto out;
 852         }
 853
 854         if (ret.eax & 0x1)
 855                 interface->capability |= ACER_CAP_WIRELESS;
 856
 857         args.ebx = 2 << 8;
 858         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 859
 860         /*
 861          * It's ok to use existing buffer for next wmab_execute call.
 862          * But we need to kfree(out.pointer) if next wmab_execute fail.
 863          */
 864         status = wmab_execute(&args, &out);
 865         if (ACPI_FAILURE(status))
 866                 goto out;
 867
 868         obj = (union acpi_object *) out.pointer;
 869         if (obj && obj->type == ACPI_TYPE_BUFFER
 870         && obj->buffer.length == sizeof(struct wmab_ret)) {
 871                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 872         } else {
 873                 status = AE_ERROR;
 874                 goto out;
 875         }
 876
 877         if (ret.eax & 0x1)
 878                 interface->capability |= ACER_CAP_BLUETOOTH;
 879
 880         /*
 881          * This appears to be safe to enable, since all Wistron based laptops
 882          * appear to use the same EC register for brightness, even if they
 883          * differ for wireless, etc
 884          */
 885         if (quirks->brightness >= 0)
 886                 interface->capability |= ACER_CAP_BRIGHTNESS;
 887
 888         status = AE_OK;
 889 out:
 890         kfree(out.pointer);
 891         return status;
 892 }
 893
 894 static struct wmi_interface AMW0_interface = {
 895         .type = ACER_AMW0,
 896 };
 897
 898 static struct wmi_interface AMW0_V2_interface = {
 899         .type = ACER_AMW0_V2,
 900 };
 901
 902 /*
 903  * New interface (The WMID interface)
 904  */
 905 static acpi_status
 906 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 907 {
 908         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 909         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 910         union acpi_object *obj;
 911         u32 tmp = 0;
 912         acpi_status status;
 913
 914         status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 915
 916         if (ACPI_FAILURE(status))
 917                 return status;
 918
 919         obj = (union acpi_object *) result.pointer;
 920         if (obj) {
 921                 if (obj->type == ACPI_TYPE_BUFFER &&
 922                         (obj->buffer.length == sizeof(u32) ||
 923                         obj->buffer.length == sizeof(u64))) {
 924                         tmp = *((u32 *) obj->buffer.pointer);
 925                 } else if (obj->type == ACPI_TYPE_INTEGER) {
 926                         tmp = (u32) obj->integer.value;
 927                 }
 928         }
 929
 930         if (out)
 931                 *out = tmp;
 932
 933         kfree(result.pointer);
 934
 935         return status;
 936 }
 937
 938 static acpi_status WMID_get_u32(u32 *value, u32 cap)
 939 {
 940         acpi_status status;
 941         u8 tmp;
 942         u32 result, method_id = 0;
 943
 944         switch (cap) {
 945         case ACER_CAP_WIRELESS:
 946                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
 947                 break;
 948         case ACER_CAP_BLUETOOTH:
 949                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 950                 break;
 951         case ACER_CAP_BRIGHTNESS:
 952                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 953                 break;
 954         case ACER_CAP_THREEG:
 955                 method_id = ACER_WMID_GET_THREEG_METHODID;
 956                 break;
 957         case ACER_CAP_MAILLED:
 958                 if (quirks->mailled == 1) {
 959                         ec_read(0x9f, &tmp);
 960                         *value = tmp & 0x1;
 961                         return 0;
 962                 }
 963         default:
 964                 return AE_ERROR;
 965         }
 966         status = WMI_execute_u32(method_id, 0, &result);
 967
 968         if (ACPI_SUCCESS(status))
 969                 *value = (u8)result;
 970
 971         return status;
 972 }
 973
 974 static acpi_status WMID_set_u32(u32 value, u32 cap)
 975 {
 976         u32 method_id = 0;
 977         char param;
 978
 979         switch (cap) {
 980         case ACER_CAP_BRIGHTNESS:
 981                 if (value > max_brightness)
 982                         return AE_BAD_PARAMETER;
 983                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
 984                 break;
 985         case ACER_CAP_WIRELESS:
 986                 if (value > 1)
 987                         return AE_BAD_PARAMETER;
 988                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
 989                 break;
 990         case ACER_CAP_BLUETOOTH:
 991                 if (value > 1)
 992                         return AE_BAD_PARAMETER;
 993                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
 994                 break;
 995         case ACER_CAP_THREEG:
 996                 if (value > 1)
 997                         return AE_BAD_PARAMETER;
 998                 method_id = ACER_WMID_SET_THREEG_METHODID;
 999                 break;
1000         case ACER_CAP_MAILLED:
1001                 if (value > 1)
1002                         return AE_BAD_PARAMETER;
1003                 if (quirks->mailled == 1) {
1004                         param = value ? 0x92 : 0x93;
1005                         i8042_lock_chip();
1006                         i8042_command(&param, 0x1059);
1007                         i8042_unlock_chip();
1008                         return 0;
1009                 }
1010                 break;
1011         default:
1012                 return AE_ERROR;
1013         }
1014         return WMI_execute_u32(method_id, (u32)value, NULL);
1015 }
1016
1017 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1018 {
1019         struct wmid3_gds_return_value return_value;
1020         acpi_status status;
1021         union acpi_object *obj;
1022         struct wmid3_gds_get_input_param params = {
1023                 .function_num = 0x1,
1024                 .hotkey_number = commun_fn_key_number,
1025                 .devices = device,
1026         };
1027         struct acpi_buffer input = {
1028                 sizeof(struct wmid3_gds_get_input_param),
1029                 &params
1030         };
1031         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1032
1033         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1034         if (ACPI_FAILURE(status))
1035                 return status;
1036
1037         obj = output.pointer;
1038
1039         if (!obj)
1040                 return AE_ERROR;
1041         else if (obj->type != ACPI_TYPE_BUFFER) {
1042                 kfree(obj);
1043                 return AE_ERROR;
1044         }
1045         if (obj->buffer.length != 8) {
1046                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1047                 kfree(obj);
1048                 return AE_ERROR;
1049         }
1050
1051         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1052         kfree(obj);
1053
1054         if (return_value.error_code || return_value.ec_return_value)
1055                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1056                         device,
1057                         return_value.error_code,
1058                         return_value.ec_return_value);
1059         else
1060                 *value = !!(return_value.devices & device);
1061
1062         return status;
1063 }
1064
1065 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1066 {
1067         u16 device;
1068
1069         switch (cap) {
1070         case ACER_CAP_WIRELESS:
1071                 device = ACER_WMID3_GDS_WIRELESS;
1072                 break;
1073         case ACER_CAP_BLUETOOTH:
1074                 device = ACER_WMID3_GDS_BLUETOOTH;
1075                 break;
1076         case ACER_CAP_THREEG:
1077                 device = ACER_WMID3_GDS_THREEG;
1078                 break;
1079         default:
1080                 return AE_ERROR;
1081         }
1082         return wmid3_get_device_status(value, device);
1083 }
1084
1085 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1086 {
1087         struct wmid3_gds_return_value return_value;
1088         acpi_status status;
1089         union acpi_object *obj;
1090         u16 devices;
1091         struct wmid3_gds_get_input_param get_params = {
1092                 .function_num = 0x1,
1093                 .hotkey_number = commun_fn_key_number,
1094                 .devices = commun_func_bitmap,
1095         };
1096         struct acpi_buffer get_input = {
1097                 sizeof(struct wmid3_gds_get_input_param),
1098                 &get_params
1099         };
1100         struct wmid3_gds_set_input_param set_params = {
1101                 .function_num = 0x2,
1102                 .hotkey_number = commun_fn_key_number,
1103                 .devices = commun_func_bitmap,
1104         };
1105         struct acpi_buffer set_input = {
1106                 sizeof(struct wmid3_gds_set_input_param),
1107                 &set_params
1108         };
1109         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1110         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1111
1112         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1113         if (ACPI_FAILURE(status))
1114                 return status;
1115
1116         obj = output.pointer;
1117
1118         if (!obj)
1119                 return AE_ERROR;
1120         else if (obj->type != ACPI_TYPE_BUFFER) {
1121                 kfree(obj);
1122                 return AE_ERROR;
1123         }
1124         if (obj->buffer.length != 8) {
1125                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1126                 kfree(obj);
1127                 return AE_ERROR;
1128         }
1129
1130         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1131         kfree(obj);
1132
1133         if (return_value.error_code || return_value.ec_return_value) {
1134                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1135                         return_value.error_code,
1136                         return_value.ec_return_value);
1137                 return status;
1138         }
1139
1140         devices = return_value.devices;
1141         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1142
1143         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1144         if (ACPI_FAILURE(status))
1145                 return status;
1146
1147         obj = output2.pointer;
1148
1149         if (!obj)
1150                 return AE_ERROR;
1151         else if (obj->type != ACPI_TYPE_BUFFER) {
1152                 kfree(obj);
1153                 return AE_ERROR;
1154         }
1155         if (obj->buffer.length != 4) {
1156                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1157                 kfree(obj);
1158                 return AE_ERROR;
1159         }
1160
1161         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1162         kfree(obj);
1163
1164         if (return_value.error_code || return_value.ec_return_value)
1165                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1166                         return_value.error_code,
1167                         return_value.ec_return_value);
1168
1169         return status;
1170 }
1171
1172 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1173 {
1174         u16 device;
1175
1176         switch (cap) {
1177         case ACER_CAP_WIRELESS:
1178                 device = ACER_WMID3_GDS_WIRELESS;
1179                 break;
1180         case ACER_CAP_BLUETOOTH:
1181                 device = ACER_WMID3_GDS_BLUETOOTH;
1182                 break;
1183         case ACER_CAP_THREEG:
1184                 device = ACER_WMID3_GDS_THREEG;
1185                 break;
1186         default:
1187                 return AE_ERROR;
1188         }
1189         return wmid3_set_device_status(value, device);
1190 }
1191
1192 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1193 {
1194         struct hotkey_function_type_aa *type_aa;
1195
1196         /* We are looking for OEM-specific Type AAh */
1197         if (header->type != 0xAA)
1198                 return;
1199
1200         has_type_aa = true;
1201         type_aa = (struct hotkey_function_type_aa *) header;
1202
1203         pr_info("Function bitmap for Communication Button: 0x%x\n",
1204                 type_aa->commun_func_bitmap);
1205         commun_func_bitmap = type_aa->commun_func_bitmap;
1206
1207         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1208                 interface->capability |= ACER_CAP_WIRELESS;
1209         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1210                 interface->capability |= ACER_CAP_THREEG;
1211         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1212                 interface->capability |= ACER_CAP_BLUETOOTH;
1213
1214         commun_fn_key_number = type_aa->commun_fn_key_number;
1215 }
1216
1217 static acpi_status WMID_set_capabilities(void)
1218 {
1219         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1220         union acpi_object *obj;
1221         acpi_status status;
1222         u32 devices;
1223
1224         status = wmi_query_block(WMID_GUID2, 1, &out);
1225         if (ACPI_FAILURE(status))
1226                 return status;
1227
1228         obj = (union acpi_object *) out.pointer;
1229         if (obj) {
1230                 if (obj->type == ACPI_TYPE_BUFFER &&
1231                         (obj->buffer.length == sizeof(u32) ||
1232                         obj->buffer.length == sizeof(u64))) {
1233                         devices = *((u32 *) obj->buffer.pointer);
1234                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1235                         devices = (u32) obj->integer.value;
1236                 } else {
1237                         kfree(out.pointer);
1238                         return AE_ERROR;
1239                 }
1240         } else {
1241                 kfree(out.pointer);
1242                 return AE_ERROR;
1243         }
1244
1245         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1246         if (devices & 0x07)
1247                 interface->capability |= ACER_CAP_WIRELESS;
1248         if (devices & 0x40)
1249                 interface->capability |= ACER_CAP_THREEG;
1250         if (devices & 0x10)
1251                 interface->capability |= ACER_CAP_BLUETOOTH;
1252
1253         if (!(devices & 0x20))
1254                 max_brightness = 0x9;
1255
1256         kfree(out.pointer);
1257         return status;
1258 }
1259
1260 static struct wmi_interface wmid_interface = {
1261         .type = ACER_WMID,
1262 };
1263
1264 static struct wmi_interface wmid_v2_interface = {
1265         .type = ACER_WMID_v2,
1266 };
1267
1268 /*
1269  * Generic Device (interface-independent)
1270  */
1271
1272 static acpi_status get_u32(u32 *value, u32 cap)
1273 {
1274         acpi_status status = AE_ERROR;
1275
1276         switch (interface->type) {
1277         case ACER_AMW0:
1278                 status = AMW0_get_u32(value, cap);
1279                 break;
1280         case ACER_AMW0_V2:
1281                 if (cap == ACER_CAP_MAILLED) {
1282                         status = AMW0_get_u32(value, cap);
1283                         break;
1284                 }
1285         case ACER_WMID:
1286                 status = WMID_get_u32(value, cap);
1287                 break;
1288         case ACER_WMID_v2:
1289                 if (cap & (ACER_CAP_WIRELESS |
1290                            ACER_CAP_BLUETOOTH |
1291                            ACER_CAP_THREEG))
1292                         status = wmid_v2_get_u32(value, cap);
1293                 else if (wmi_has_guid(WMID_GUID2))
1294                         status = WMID_get_u32(value, cap);
1295                 break;
1296         }
1297
1298         return status;
1299 }
1300
1301 static acpi_status set_u32(u32 value, u32 cap)
1302 {
1303         acpi_status status;
1304
1305         if (interface->capability & cap) {
1306                 switch (interface->type) {
1307                 case ACER_AMW0:
1308                         return AMW0_set_u32(value, cap);
1309                 case ACER_AMW0_V2:
1310                         if (cap == ACER_CAP_MAILLED)
1311                                 return AMW0_set_u32(value, cap);
1312
1313                         /*
1314                          * On some models, some WMID methods don't toggle
1315                          * properly. For those cases, we want to run the AMW0
1316                          * method afterwards to be certain we've really toggled
1317                          * the device state.
1318                          */
1319                         if (cap == ACER_CAP_WIRELESS ||
1320                                 cap == ACER_CAP_BLUETOOTH) {
1321                                 status = WMID_set_u32(value, cap);
1322                                 if (ACPI_FAILURE(status))
1323                                         return status;
1324
1325                                 return AMW0_set_u32(value, cap);
1326                         }
1327                 case ACER_WMID:
1328                         return WMID_set_u32(value, cap);
1329                 case ACER_WMID_v2:
1330                         if (cap & (ACER_CAP_WIRELESS |
1331                                    ACER_CAP_BLUETOOTH |
1332                                    ACER_CAP_THREEG))
1333                                 return wmid_v2_set_u32(value, cap);
1334                         else if (wmi_has_guid(WMID_GUID2))
1335                                 return WMID_set_u32(value, cap);
1336                 default:
1337                         return AE_BAD_PARAMETER;
1338                 }
1339         }
1340         return AE_BAD_PARAMETER;
1341 }
1342
1343 static void __init acer_commandline_init(void)
1344 {
1345         /*
1346          * These will all fail silently if the value given is invalid, or the
1347          * capability isn't available on the given interface
1348          */
1349         if (mailled >= 0)
1350                 set_u32(mailled, ACER_CAP_MAILLED);
1351         if (!has_type_aa && threeg >= 0)
1352                 set_u32(threeg, ACER_CAP_THREEG);
1353         if (brightness >= 0)
1354                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1355 }
1356
1357 /*
1358  * LED device (Mail LED only, no other LEDs known yet)
1359  */
1360 static void mail_led_set(struct led_classdev *led_cdev,
1361 enum led_brightness value)
1362 {
1363         set_u32(value, ACER_CAP_MAILLED);
1364 }
1365
1366 static struct led_classdev mail_led = {
1367         .name = "acer-wmi::mail",
1368         .brightness_set = mail_led_set,
1369 };
1370
1371 static int acer_led_init(struct device *dev)
1372 {
1373         return led_classdev_register(dev, &mail_led);
1374 }
1375
1376 static void acer_led_exit(void)
1377 {
1378         set_u32(LED_OFF, ACER_CAP_MAILLED);
1379         led_classdev_unregister(&mail_led);
1380 }
1381
1382 /*
1383  * Backlight device
1384  */
1385 static struct backlight_device *acer_backlight_device;
1386
1387 static int read_brightness(struct backlight_device *bd)
1388 {
1389         u32 value;
1390         get_u32(&value, ACER_CAP_BRIGHTNESS);
1391         return value;
1392 }
1393
1394 static int update_bl_status(struct backlight_device *bd)
1395 {
1396         int intensity = bd->props.brightness;
1397
1398         if (bd->props.power != FB_BLANK_UNBLANK)
1399                 intensity = 0;
1400         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1401                 intensity = 0;
1402
1403         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1404
1405         return 0;
1406 }
1407
1408 static const struct backlight_ops acer_bl_ops = {
1409         .get_brightness = read_brightness,
1410         .update_status = update_bl_status,
1411 };
1412
1413 static int acer_backlight_init(struct device *dev)
1414 {
1415         struct backlight_properties props;
1416         struct backlight_device *bd;
1417
1418         memset(&props, 0, sizeof(struct backlight_properties));
1419         props.type = BACKLIGHT_PLATFORM;
1420         props.max_brightness = max_brightness;
1421         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1422                                        &props);
1423         if (IS_ERR(bd)) {
1424                 pr_err("Could not register Acer backlight device\n");
1425                 acer_backlight_device = NULL;
1426                 return PTR_ERR(bd);
1427         }
1428
1429         acer_backlight_device = bd;
1430
1431         bd->props.power = FB_BLANK_UNBLANK;
1432         bd->props.brightness = read_brightness(bd);
1433         backlight_update_status(bd);
1434         return 0;
1435 }
1436
1437 static void acer_backlight_exit(void)
1438 {
1439         backlight_device_unregister(acer_backlight_device);
1440 }
1441
1442 /*
1443  * Accelerometer device
1444  */
1445 static acpi_handle gsensor_handle;
1446
1447 static int acer_gsensor_init(void)
1448 {
1449         acpi_status status;
1450         struct acpi_buffer output;
1451         union acpi_object out_obj;
1452
1453         output.length = sizeof(out_obj);
1454         output.pointer = &out_obj;
1455         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1456         if (ACPI_FAILURE(status))
1457                 return -1;
1458
1459         return 0;
1460 }
1461
1462 static int acer_gsensor_open(struct input_dev *input)
1463 {
1464         return acer_gsensor_init();
1465 }
1466
1467 static int acer_gsensor_event(void)
1468 {
1469         acpi_status status;
1470         struct acpi_buffer output;
1471         union acpi_object out_obj[5];
1472
1473         if (!has_cap(ACER_CAP_ACCEL))
1474                 return -1;
1475
1476         output.length = sizeof(out_obj);
1477         output.pointer = out_obj;
1478
1479         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1480         if (ACPI_FAILURE(status))
1481                 return -1;
1482
1483         if (out_obj->package.count != 4)
1484                 return -1;
1485
1486         input_report_abs(acer_wmi_accel_dev, ABS_X,
1487                 (s16)out_obj->package.elements[0].integer.value);
1488         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1489                 (s16)out_obj->package.elements[1].integer.value);
1490         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1491                 (s16)out_obj->package.elements[2].integer.value);
1492         input_sync(acer_wmi_accel_dev);
1493         return 0;
1494 }
1495
1496 /*
1497  * Rfkill devices
1498  */
1499 static void acer_rfkill_update(struct work_struct *ignored);
1500 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1501 static void acer_rfkill_update(struct work_struct *ignored)
1502 {
1503         u32 state;
1504         acpi_status status;
1505
1506         if (has_cap(ACER_CAP_WIRELESS)) {
1507                 status = get_u32(&state, ACER_CAP_WIRELESS);
1508                 if (ACPI_SUCCESS(status)) {
1509                         if (quirks->wireless == 3)
1510                                 rfkill_set_hw_state(wireless_rfkill, !state);
1511                         else
1512                                 rfkill_set_sw_state(wireless_rfkill, !state);
1513                 }
1514         }
1515
1516         if (has_cap(ACER_CAP_BLUETOOTH)) {
1517                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1518                 if (ACPI_SUCCESS(status))
1519                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1520         }
1521
1522         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1523                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1524                 if (ACPI_SUCCESS(status))
1525                         rfkill_set_sw_state(threeg_rfkill, !state);
1526         }
1527
1528         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1529 }
1530
1531 static int acer_rfkill_set(void *data, bool blocked)
1532 {
1533         acpi_status status;
1534         u32 cap = (unsigned long)data;
1535
1536         if (rfkill_inited) {
1537                 status = set_u32(!blocked, cap);
1538                 if (ACPI_FAILURE(status))
1539                         return -ENODEV;
1540         }
1541
1542         return 0;
1543 }
1544
1545 static const struct rfkill_ops acer_rfkill_ops = {
1546         .set_block = acer_rfkill_set,
1547 };
1548
1549 static struct rfkill *acer_rfkill_register(struct device *dev,
1550                                            enum rfkill_type type,
1551                                            char *name, u32 cap)
1552 {
1553         int err;
1554         struct rfkill *rfkill_dev;
1555         u32 state;
1556         acpi_status status;
1557
1558         rfkill_dev = rfkill_alloc(name, dev, type,
1559                                   &acer_rfkill_ops,
1560                                   (void *)(unsigned long)cap);
1561         if (!rfkill_dev)
1562                 return ERR_PTR(-ENOMEM);
1563
1564         status = get_u32(&state, cap);
1565
1566         err = rfkill_register(rfkill_dev);
1567         if (err) {
1568                 rfkill_destroy(rfkill_dev);
1569                 return ERR_PTR(err);
1570         }
1571
1572         if (ACPI_SUCCESS(status))
1573                 rfkill_set_sw_state(rfkill_dev, !state);
1574
1575         return rfkill_dev;
1576 }
1577
1578 static int acer_rfkill_init(struct device *dev)
1579 {
1580         int err;
1581
1582         if (has_cap(ACER_CAP_WIRELESS)) {
1583                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1584                         "acer-wireless", ACER_CAP_WIRELESS);
1585                 if (IS_ERR(wireless_rfkill)) {
1586                         err = PTR_ERR(wireless_rfkill);
1587                         goto error_wireless;
1588                 }
1589         }
1590
1591         if (has_cap(ACER_CAP_BLUETOOTH)) {
1592                 bluetooth_rfkill = acer_rfkill_register(dev,
1593                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1594                         ACER_CAP_BLUETOOTH);
1595                 if (IS_ERR(bluetooth_rfkill)) {
1596                         err = PTR_ERR(bluetooth_rfkill);
1597                         goto error_bluetooth;
1598                 }
1599         }
1600
1601         if (has_cap(ACER_CAP_THREEG)) {
1602                 threeg_rfkill = acer_rfkill_register(dev,
1603                         RFKILL_TYPE_WWAN, "acer-threeg",
1604                         ACER_CAP_THREEG);
1605                 if (IS_ERR(threeg_rfkill)) {
1606                         err = PTR_ERR(threeg_rfkill);
1607                         goto error_threeg;
1608                 }
1609         }
1610
1611         rfkill_inited = true;
1612
1613         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1614             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1615                 schedule_delayed_work(&acer_rfkill_work,
1616                         round_jiffies_relative(HZ));
1617
1618         return 0;
1619
1620 error_threeg:
1621         if (has_cap(ACER_CAP_BLUETOOTH)) {
1622                 rfkill_unregister(bluetooth_rfkill);
1623                 rfkill_destroy(bluetooth_rfkill);
1624         }
1625 error_bluetooth:
1626         if (has_cap(ACER_CAP_WIRELESS)) {
1627                 rfkill_unregister(wireless_rfkill);
1628                 rfkill_destroy(wireless_rfkill);
1629         }
1630 error_wireless:
1631         return err;
1632 }
1633
1634 static void acer_rfkill_exit(void)
1635 {
1636         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1637             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1638                 cancel_delayed_work_sync(&acer_rfkill_work);
1639
1640         if (has_cap(ACER_CAP_WIRELESS)) {
1641                 rfkill_unregister(wireless_rfkill);
1642                 rfkill_destroy(wireless_rfkill);
1643         }
1644
1645         if (has_cap(ACER_CAP_BLUETOOTH)) {
1646                 rfkill_unregister(bluetooth_rfkill);
1647                 rfkill_destroy(bluetooth_rfkill);
1648         }
1649
1650         if (has_cap(ACER_CAP_THREEG)) {
1651                 rfkill_unregister(threeg_rfkill);
1652                 rfkill_destroy(threeg_rfkill);
1653         }
1654         return;
1655 }
1656
1657 /*
1658  * sysfs interface
1659  */
1660 static ssize_t show_bool_threeg(struct device *dev,
1661         struct device_attribute *attr, char *buf)
1662 {
1663         u32 result; \
1664         acpi_status status;
1665
1666         pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1667                 current->comm);
1668         status = get_u32(&result, ACER_CAP_THREEG);
1669         if (ACPI_SUCCESS(status))
1670                 return sprintf(buf, "%u\n", result);
1671         return sprintf(buf, "Read error\n");
1672 }
1673
1674 static ssize_t set_bool_threeg(struct device *dev,
1675         struct device_attribute *attr, const char *buf, size_t count)
1676 {
1677         u32 tmp = simple_strtoul(buf, NULL, 10);
1678         acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1679         pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1680                 current->comm);
1681         if (ACPI_FAILURE(status))
1682                 return -EINVAL;
1683         return count;
1684 }
1685 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1686         set_bool_threeg);
1687
1688 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1689         char *buf)
1690 {
1691         pr_info("This interface sysfs will be removed in 2012 - used by: %s\n",
1692                 current->comm);
1693         switch (interface->type) {
1694         case ACER_AMW0:
1695                 return sprintf(buf, "AMW0\n");
1696         case ACER_AMW0_V2:
1697                 return sprintf(buf, "AMW0 v2\n");
1698         case ACER_WMID:
1699                 return sprintf(buf, "WMID\n");
1700         case ACER_WMID_v2:
1701                 return sprintf(buf, "WMID v2\n");
1702         default:
1703                 return sprintf(buf, "Error!\n");
1704         }
1705 }
1706
1707 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1708
1709 static void acer_wmi_notify(u32 value, void *context)
1710 {
1711         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1712         union acpi_object *obj;
1713         struct event_return_value return_value;
1714         acpi_status status;
1715         u16 device_state;
1716         const struct key_entry *key;
1717         u32 scancode;
1718
1719         status = wmi_get_event_data(value, &response);
1720         if (status != AE_OK) {
1721                 pr_warn("bad event status 0x%x\n", status);
1722                 return;
1723         }
1724
1725         obj = (union acpi_object *)response.pointer;
1726
1727         if (!obj)
1728                 return;
1729         if (obj->type != ACPI_TYPE_BUFFER) {
1730                 pr_warn("Unknown response received %d\n", obj->type);
1731                 kfree(obj);
1732                 return;
1733         }
1734         if (obj->buffer.length != 8) {
1735                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1736                 kfree(obj);
1737                 return;
1738         }
1739
1740         return_value = *((struct event_return_value *)obj->buffer.pointer);
1741         kfree(obj);
1742
1743         switch (return_value.function) {
1744         case WMID_HOTKEY_EVENT:
1745                 device_state = return_value.device_state;
1746                 pr_debug("device state: 0x%x\n", device_state);
1747
1748                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1749                                                         return_value.key_num);
1750                 if (!key) {
1751                         pr_warn("Unknown key number - 0x%x\n",
1752                                 return_value.key_num);
1753                 } else {
1754                         scancode = return_value.key_num;
1755                         switch (key->keycode) {
1756                         case KEY_WLAN:
1757                         case KEY_BLUETOOTH:
1758                                 if (has_cap(ACER_CAP_WIRELESS))
1759                                         rfkill_set_sw_state(wireless_rfkill,
1760                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1761                                 if (has_cap(ACER_CAP_THREEG))
1762                                         rfkill_set_sw_state(threeg_rfkill,
1763                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1764                                 if (has_cap(ACER_CAP_BLUETOOTH))
1765                                         rfkill_set_sw_state(bluetooth_rfkill,
1766                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1767                                 break;
1768                         case KEY_TOUCHPAD_TOGGLE:
1769                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1770                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1771                         }
1772                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1773                 }
1774                 break;
1775         case WMID_ACCEL_EVENT:
1776                 acer_gsensor_event();
1777                 break;
1778         default:
1779                 pr_warn("Unknown function number - %d - %d\n",
1780                         return_value.function, return_value.key_num);
1781                 break;
1782         }
1783 }
1784
1785 static acpi_status
1786 wmid3_set_lm_mode(struct lm_input_params *params,
1787                   struct lm_return_value *return_value)
1788 {
1789         acpi_status status;
1790         union acpi_object *obj;
1791
1792         struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1793         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1794
1795         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1796         if (ACPI_FAILURE(status))
1797                 return status;
1798
1799         obj = output.pointer;
1800
1801         if (!obj)
1802                 return AE_ERROR;
1803         else if (obj->type != ACPI_TYPE_BUFFER) {
1804                 kfree(obj);
1805                 return AE_ERROR;
1806         }
1807         if (obj->buffer.length != 4) {
1808                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1809                 kfree(obj);
1810                 return AE_ERROR;
1811         }
1812
1813         *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1814         kfree(obj);
1815
1816         return status;
1817 }
1818
1819 static int acer_wmi_enable_ec_raw(void)
1820 {
1821         struct lm_return_value return_value;
1822         acpi_status status;
1823         struct lm_input_params params = {
1824                 .function_num = 0x1,
1825                 .commun_devices = 0xFFFF,
1826                 .devices = 0xFFFF,
1827                 .lm_status = 0x00,            /* Launch Manager Deactive */
1828         };
1829
1830         status = wmid3_set_lm_mode(&params, &return_value);
1831
1832         if (return_value.error_code || return_value.ec_return_value)
1833                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1834                         return_value.error_code,
1835                         return_value.ec_return_value);
1836         else
1837                 pr_info("Enabled EC raw mode\n");
1838
1839         return status;
1840 }
1841
1842 static int acer_wmi_enable_lm(void)
1843 {
1844         struct lm_return_value return_value;
1845         acpi_status status;
1846         struct lm_input_params params = {
1847                 .function_num = 0x1,
1848                 .commun_devices = 0xFFFF,
1849                 .devices = 0xFFFF,
1850                 .lm_status = 0x01,            /* Launch Manager Active */
1851         };
1852
1853         status = wmid3_set_lm_mode(&params, &return_value);
1854
1855         if (return_value.error_code || return_value.ec_return_value)
1856                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1857                         return_value.error_code,
1858                         return_value.ec_return_value);
1859
1860         return status;
1861 }
1862
1863 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
1864                                                 void *ctx, void **retval)
1865 {
1866         *(acpi_handle *)retval = ah;
1867         return AE_OK;
1868 }
1869
1870 static int __init acer_wmi_get_handle(const char *name, const char *prop,
1871                                         acpi_handle *ah)
1872 {
1873         acpi_status status;
1874         acpi_handle handle;
1875
1876         BUG_ON(!name || !ah);
1877
1878         handle = NULL;
1879         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
1880                                         (void *)name, &handle);
1881
1882         if (ACPI_SUCCESS(status)) {
1883                 *ah = handle;
1884                 return 0;
1885         } else {
1886                 return -ENODEV;
1887         }
1888 }
1889
1890 static int __init acer_wmi_accel_setup(void)
1891 {
1892         int err;
1893
1894         err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle);
1895         if (err)
1896                 return err;
1897
1898         interface->capability |= ACER_CAP_ACCEL;
1899
1900         acer_wmi_accel_dev = input_allocate_device();
1901         if (!acer_wmi_accel_dev)
1902                 return -ENOMEM;
1903
1904         acer_wmi_accel_dev->open = acer_gsensor_open;
1905
1906         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1907         acer_wmi_accel_dev->phys = "wmi/input1";
1908         acer_wmi_accel_dev->id.bustype = BUS_HOST;
1909         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1910         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1911         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1912         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1913
1914         err = input_register_device(acer_wmi_accel_dev);
1915         if (err)
1916                 goto err_free_dev;
1917
1918         return 0;
1919
1920 err_free_dev:
1921         input_free_device(acer_wmi_accel_dev);
1922         return err;
1923 }
1924
1925 static void acer_wmi_accel_destroy(void)
1926 {
1927         input_unregister_device(acer_wmi_accel_dev);
1928 }
1929
1930 static int __init acer_wmi_input_setup(void)
1931 {
1932         acpi_status status;
1933         int err;
1934
1935         acer_wmi_input_dev = input_allocate_device();
1936         if (!acer_wmi_input_dev)
1937                 return -ENOMEM;
1938
1939         acer_wmi_input_dev->name = "Acer WMI hotkeys";
1940         acer_wmi_input_dev->phys = "wmi/input0";
1941         acer_wmi_input_dev->id.bustype = BUS_HOST;
1942
1943         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1944         if (err)
1945                 goto err_free_dev;
1946
1947         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1948                                                 acer_wmi_notify, NULL);
1949         if (ACPI_FAILURE(status)) {
1950                 err = -EIO;
1951                 goto err_free_keymap;
1952         }
1953
1954         err = input_register_device(acer_wmi_input_dev);
1955         if (err)
1956                 goto err_uninstall_notifier;
1957
1958         return 0;
1959
1960 err_uninstall_notifier:
1961         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1962 err_free_keymap:
1963         sparse_keymap_free(acer_wmi_input_dev);
1964 err_free_dev:
1965         input_free_device(acer_wmi_input_dev);
1966         return err;
1967 }
1968
1969 static void acer_wmi_input_destroy(void)
1970 {
1971         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1972         sparse_keymap_free(acer_wmi_input_dev);
1973         input_unregister_device(acer_wmi_input_dev);
1974 }
1975
1976 /*
1977  * debugfs functions
1978  */
1979 static u32 get_wmid_devices(void)
1980 {
1981         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1982         union acpi_object *obj;
1983         acpi_status status;
1984         u32 devices = 0;
1985
1986         status = wmi_query_block(WMID_GUID2, 1, &out);
1987         if (ACPI_FAILURE(status))
1988                 return 0;
1989
1990         obj = (union acpi_object *) out.pointer;
1991         if (obj) {
1992                 if (obj->type == ACPI_TYPE_BUFFER &&
1993                         (obj->buffer.length == sizeof(u32) ||
1994                         obj->buffer.length == sizeof(u64))) {
1995                         devices = *((u32 *) obj->buffer.pointer);
1996                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1997                         devices = (u32) obj->integer.value;
1998                 }
1999         }
2000
2001         kfree(out.pointer);
2002         return devices;
2003 }
2004
2005 /*
2006  * Platform device
2007  */
2008 static int acer_platform_probe(struct platform_device *device)
2009 {
2010         int err;
2011
2012         if (has_cap(ACER_CAP_MAILLED)) {
2013                 err = acer_led_init(&device->dev);
2014                 if (err)
2015                         goto error_mailled;
2016         }
2017
2018         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2019                 err = acer_backlight_init(&device->dev);
2020                 if (err)
2021                         goto error_brightness;
2022         }
2023
2024         err = acer_rfkill_init(&device->dev);
2025         if (err)
2026                 goto error_rfkill;
2027
2028         return err;
2029
2030 error_rfkill:
2031         if (has_cap(ACER_CAP_BRIGHTNESS))
2032                 acer_backlight_exit();
2033 error_brightness:
2034         if (has_cap(ACER_CAP_MAILLED))
2035                 acer_led_exit();
2036 error_mailled:
2037         return err;
2038 }
2039
2040 static int acer_platform_remove(struct platform_device *device)
2041 {
2042         if (has_cap(ACER_CAP_MAILLED))
2043                 acer_led_exit();
2044         if (has_cap(ACER_CAP_BRIGHTNESS))
2045                 acer_backlight_exit();
2046
2047         acer_rfkill_exit();
2048         return 0;
2049 }
2050
2051 static int acer_suspend(struct device *dev)
2052 {
2053         u32 value;
2054         struct acer_data *data = &interface->data;
2055
2056         if (!data)
2057                 return -ENOMEM;
2058
2059         if (has_cap(ACER_CAP_MAILLED)) {
2060                 get_u32(&value, ACER_CAP_MAILLED);
2061                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2062                 data->mailled = value;
2063         }
2064
2065         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2066                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2067                 data->brightness = value;
2068         }
2069
2070         return 0;
2071 }
2072
2073 static int acer_resume(struct device *dev)
2074 {
2075         struct acer_data *data = &interface->data;
2076
2077         if (!data)
2078                 return -ENOMEM;
2079
2080         if (has_cap(ACER_CAP_MAILLED))
2081                 set_u32(data->mailled, ACER_CAP_MAILLED);
2082
2083         if (has_cap(ACER_CAP_BRIGHTNESS))
2084                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2085
2086         if (has_cap(ACER_CAP_ACCEL))
2087                 acer_gsensor_init();
2088
2089         return 0;
2090 }
2091
2092 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2093
2094 static void acer_platform_shutdown(struct platform_device *device)
2095 {
2096         struct acer_data *data = &interface->data;
2097
2098         if (!data)
2099                 return;
2100
2101         if (has_cap(ACER_CAP_MAILLED))
2102                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2103 }
2104
2105 static struct platform_driver acer_platform_driver = {
2106         .driver = {
2107                 .name = "acer-wmi",
2108                 .owner = THIS_MODULE,
2109                 .pm = &acer_pm,
2110         },
2111         .probe = acer_platform_probe,
2112         .remove = acer_platform_remove,
2113         .shutdown = acer_platform_shutdown,
2114 };
2115
2116 static struct platform_device *acer_platform_device;
2117
2118 static int remove_sysfs(struct platform_device *device)
2119 {
2120         if (has_cap(ACER_CAP_THREEG))
2121                 device_remove_file(&device->dev, &dev_attr_threeg);
2122
2123         device_remove_file(&device->dev, &dev_attr_interface);
2124
2125         return 0;
2126 }
2127
2128 static int create_sysfs(void)
2129 {
2130         int retval = -ENOMEM;
2131
2132         if (has_cap(ACER_CAP_THREEG)) {
2133                 retval = device_create_file(&acer_platform_device->dev,
2134                         &dev_attr_threeg);
2135                 if (retval)
2136                         goto error_sysfs;
2137         }
2138
2139         retval = device_create_file(&acer_platform_device->dev,
2140                 &dev_attr_interface);
2141         if (retval)
2142                 goto error_sysfs;
2143
2144         return 0;
2145
2146 error_sysfs:
2147                 remove_sysfs(acer_platform_device);
2148         return retval;
2149 }
2150
2151 static void remove_debugfs(void)
2152 {
2153         debugfs_remove(interface->debug.devices);
2154         debugfs_remove(interface->debug.root);
2155 }
2156
2157 static int create_debugfs(void)
2158 {
2159         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2160         if (!interface->debug.root) {
2161                 pr_err("Failed to create debugfs directory");
2162                 return -ENOMEM;
2163         }
2164
2165         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2166                                         interface->debug.root,
2167                                         &interface->debug.wmid_devices);
2168         if (!interface->debug.devices)
2169                 goto error_debugfs;
2170
2171         return 0;
2172
2173 error_debugfs:
2174         remove_debugfs();
2175         return -ENOMEM;
2176 }
2177
2178 static int __init acer_wmi_init(void)
2179 {
2180         int err;
2181
2182         pr_info("Acer Laptop ACPI-WMI Extras\n");
2183
2184         if (dmi_check_system(acer_blacklist)) {
2185                 pr_info("Blacklisted hardware detected - not loading\n");
2186                 return -ENODEV;
2187         }
2188
2189         find_quirks();
2190
2191         /*
2192          * Detect which ACPI-WMI interface we're using.
2193          */
2194         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2195                 interface = &AMW0_V2_interface;
2196
2197         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2198                 interface = &wmid_interface;
2199
2200         if (wmi_has_guid(WMID_GUID3))
2201                 interface = &wmid_v2_interface;
2202
2203         if (interface)
2204                 dmi_walk(type_aa_dmi_decode, NULL);
2205
2206         if (wmi_has_guid(WMID_GUID2) && interface) {
2207                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2208                         pr_err("Unable to detect available WMID devices\n");
2209                         return -ENODEV;
2210                 }
2211                 /* WMID always provides brightness methods */
2212                 interface->capability |= ACER_CAP_BRIGHTNESS;
2213         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2214                 pr_err("No WMID device detection method found\n");
2215                 return -ENODEV;
2216         }
2217
2218         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2219                 interface = &AMW0_interface;
2220
2221                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2222                         pr_err("Unable to detect available AMW0 devices\n");
2223                         return -ENODEV;
2224                 }
2225         }
2226
2227         if (wmi_has_guid(AMW0_GUID1))
2228                 AMW0_find_mailled();
2229
2230         if (!interface) {
2231                 pr_err("No or unsupported WMI interface, unable to load\n");
2232                 return -ENODEV;
2233         }
2234
2235         set_quirks();
2236
2237         if (dmi_check_system(video_vendor_dmi_table))
2238                 acpi_video_dmi_promote_vendor();
2239         if (acpi_video_backlight_support()) {
2240                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2241                 pr_info("Brightness must be controlled by acpi video driver\n");
2242         } else {
2243                 pr_info("Disabling ACPI video driver\n");
2244                 acpi_video_unregister();
2245         }
2246
2247         if (wmi_has_guid(WMID_GUID3)) {
2248                 if (ec_raw_mode) {
2249                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2250                                 pr_err("Cannot enable EC raw mode\n");
2251                                 return -ENODEV;
2252                         }
2253                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2254                         pr_err("Cannot enable Launch Manager mode\n");
2255                         return -ENODEV;
2256                 }
2257         } else if (ec_raw_mode) {
2258                 pr_info("No WMID EC raw mode enable method\n");
2259         }
2260
2261         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2262                 err = acer_wmi_input_setup();
2263                 if (err)
2264                         return err;
2265         }
2266
2267         acer_wmi_accel_setup();
2268
2269         err = platform_driver_register(&acer_platform_driver);
2270         if (err) {
2271                 pr_err("Unable to register platform driver\n");
2272                 goto error_platform_register;
2273         }
2274
2275         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2276         if (!acer_platform_device) {
2277                 err = -ENOMEM;
2278                 goto error_device_alloc;
2279         }
2280
2281         err = platform_device_add(acer_platform_device);
2282         if (err)
2283                 goto error_device_add;
2284
2285         err = create_sysfs();
2286         if (err)
2287                 goto error_create_sys;
2288
2289         if (wmi_has_guid(WMID_GUID2)) {
2290                 interface->debug.wmid_devices = get_wmid_devices();
2291                 err = create_debugfs();
2292                 if (err)
2293                         goto error_create_debugfs;
2294         }
2295
2296         /* Override any initial settings with values from the commandline */
2297         acer_commandline_init();
2298
2299         return 0;
2300
2301 error_create_debugfs:
2302         remove_sysfs(acer_platform_device);
2303 error_create_sys:
2304         platform_device_del(acer_platform_device);
2305 error_device_add:
2306         platform_device_put(acer_platform_device);
2307 error_device_alloc:
2308         platform_driver_unregister(&acer_platform_driver);
2309 error_platform_register:
2310         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2311                 acer_wmi_input_destroy();
2312         if (has_cap(ACER_CAP_ACCEL))
2313                 acer_wmi_accel_destroy();
2314
2315         return err;
2316 }
2317
2318 static void __exit acer_wmi_exit(void)
2319 {
2320         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2321                 acer_wmi_input_destroy();
2322
2323         if (has_cap(ACER_CAP_ACCEL))
2324                 acer_wmi_accel_destroy();
2325
2326         remove_sysfs(acer_platform_device);
2327         remove_debugfs();
2328         platform_device_unregister(acer_platform_device);
2329         platform_driver_unregister(&acer_platform_driver);
2330
2331         pr_info("Acer Laptop WMI Extras unloaded\n");
2332         return;
2333 }
2334
2335 module_init(acer_wmi_init);
2336 module_exit(acer_wmi_exit);