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 #include <acpi/video.h>
  45
  46 ACPI_MODULE_NAME(KBUILD_MODNAME);
  47 MODULE_AUTHOR("Carlos Corbacho");
  48 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
  49 MODULE_LICENSE("GPL");
  50
  51 /*
  52  * Magic Number
  53  * Meaning is unknown - this number is required for writing to ACPI for AMW0
  54  * (it's also used in acerhk when directly accessing the BIOS)
  55  */
  56 #define ACER_AMW0_WRITE 0x9610
  57
  58 /*
  59  * Bit masks for the AMW0 interface
  60  */
  61 #define ACER_AMW0_WIRELESS_MASK  0x35
  62 #define ACER_AMW0_BLUETOOTH_MASK 0x34
  63 #define ACER_AMW0_MAILLED_MASK   0x31
  64
  65 /*
  66  * Method IDs for WMID interface
  67  */
  68 #define ACER_WMID_GET_WIRELESS_METHODID         1
  69 #define ACER_WMID_GET_BLUETOOTH_METHODID        2
  70 #define ACER_WMID_GET_BRIGHTNESS_METHODID       3
  71 #define ACER_WMID_SET_WIRELESS_METHODID         4
  72 #define ACER_WMID_SET_BLUETOOTH_METHODID        5
  73 #define ACER_WMID_SET_BRIGHTNESS_METHODID       6
  74 #define ACER_WMID_GET_THREEG_METHODID           10
  75 #define ACER_WMID_SET_THREEG_METHODID           11
  76
  77 /*
  78  * Acer ACPI method GUIDs
  79  */
  80 #define AMW0_GUID1              "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
  81 #define AMW0_GUID2              "431F16ED-0C2B-444C-B267-27DEB140CF9C"
  82 #define WMID_GUID1              "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
  83 #define WMID_GUID2              "95764E09-FB56-4E83-B31A-37761F60994A"
  84 #define WMID_GUID3              "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
  85
  86 /*
  87  * Acer ACPI event GUIDs
  88  */
  89 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
  90
  91 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
  92 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
  93 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
  94
  95 enum acer_wmi_event_ids {
  96         WMID_HOTKEY_EVENT = 0x1,
  97         WMID_ACCEL_OR_KBD_DOCK_EVENT = 0x5,
  98 };
  99
 100 static const struct key_entry acer_wmi_keymap[] __initconst = {
 101         {KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
 102         {KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
 103         {KE_KEY, 0x04, {KEY_WLAN} },     /* WiFi */
 104         {KE_KEY, 0x12, {KEY_BLUETOOTH} },       /* BT */
 105         {KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
 106         {KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
 107         {KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
 108         {KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
 109         {KE_KEY, 0x27, {KEY_HELP} },
 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         /*
 124          * 0x61 is KEY_SWITCHVIDEOMODE. Usually this is a duplicate input event
 125          * with the "Video Bus" input device events. But sometimes it is not
 126          * a dup. Map it to KEY_UNKNOWN instead of using KE_IGNORE so that
 127          * udev/hwdb can override it on systems where it is not a dup.
 128          */
 129         {KE_KEY, 0x61, {KEY_UNKNOWN} },
 130         {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 131         {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 132         {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
 133         {KE_IGNORE, 0x81, {KEY_SLEEP} },
 134         {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad Toggle */
 135         {KE_IGNORE, 0x84, {KEY_KBDILLUMTOGGLE} }, /* Automatic Keyboard background light toggle */
 136         {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
 137         {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
 138         {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 139         {KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
 140         {KE_KEY, 0x86, {KEY_WLAN} },
 141         {KE_KEY, 0x87, {KEY_POWER} },
 142         {KE_END, 0}
 143 };
 144
 145 static struct input_dev *acer_wmi_input_dev;
 146 static struct input_dev *acer_wmi_accel_dev;
 147
 148 struct event_return_value {
 149         u8 function;
 150         u8 key_num;
 151         u16 device_state;
 152         u16 reserved1;
 153         u8 kbd_dock_state;
 154         u8 reserved2;
 155 } __attribute__((packed));
 156
 157 /*
 158  * GUID3 Get Device Status device flags
 159  */
 160 #define ACER_WMID3_GDS_WIRELESS         (1<<0)  /* WiFi */
 161 #define ACER_WMID3_GDS_THREEG           (1<<6)  /* 3G */
 162 #define ACER_WMID3_GDS_WIMAX            (1<<7)  /* WiMAX */
 163 #define ACER_WMID3_GDS_BLUETOOTH        (1<<11) /* BT */
 164 #define ACER_WMID3_GDS_RFBTN            (1<<14) /* RF Button */
 165
 166 #define ACER_WMID3_GDS_TOUCHPAD         (1<<1)  /* Touchpad */
 167
 168 /* Hotkey Customized Setting and Acer Application Status.
 169  * Set Device Default Value and Report Acer Application Status.
 170  * When Acer Application starts, it will run this method to inform
 171  * BIOS/EC that Acer Application is on.
 172  * App Status
 173  *      Bit[0]: Launch Manager Status
 174  *      Bit[1]: ePM Status
 175  *      Bit[2]: Device Control Status
 176  *      Bit[3]: Acer Power Button Utility Status
 177  *      Bit[4]: RF Button Status
 178  *      Bit[5]: ODD PM Status
 179  *      Bit[6]: Device Default Value Control
 180  *      Bit[7]: Hall Sensor Application Status
 181  */
 182 struct func_input_params {
 183         u8 function_num;        /* Function Number */
 184         u16 commun_devices;     /* Communication type devices default status */
 185         u16 devices;            /* Other type devices default status */
 186         u8 app_status;          /* Acer Device Status. LM, ePM, RF Button... */
 187         u8 app_mask;            /* Bit mask to app_status */
 188         u8 reserved;
 189 } __attribute__((packed));
 190
 191 struct func_return_value {
 192         u8 error_code;          /* Error Code */
 193         u8 ec_return_value;     /* EC Return Value */
 194         u16 reserved;
 195 } __attribute__((packed));
 196
 197 struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 198         u8 function_num;        /* Function Number */
 199         u8 hotkey_number;       /* Hotkey Number */
 200         u16 devices;            /* Set Device */
 201         u8 volume_value;        /* Volume Value */
 202 } __attribute__((packed));
 203
 204 struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 205         u8 function_num;        /* Function Number */
 206         u8 hotkey_number;       /* Hotkey Number */
 207         u16 devices;            /* Get Device */
 208 } __attribute__((packed));
 209
 210 struct wmid3_gds_return_value { /* Get Device Status return value*/
 211         u8 error_code;          /* Error Code */
 212         u8 ec_return_value;     /* EC Return Value */
 213         u16 devices;            /* Current Device Status */
 214         u32 reserved;
 215 } __attribute__((packed));
 216
 217 struct hotkey_function_type_aa {
 218         u8 type;
 219         u8 length;
 220         u16 handle;
 221         u16 commun_func_bitmap;
 222         u16 application_func_bitmap;
 223         u16 media_func_bitmap;
 224         u16 display_func_bitmap;
 225         u16 others_func_bitmap;
 226         u8 commun_fn_key_number;
 227 } __attribute__((packed));
 228
 229 /*
 230  * Interface capability flags
 231  */
 232 #define ACER_CAP_MAILLED                BIT(0)
 233 #define ACER_CAP_WIRELESS               BIT(1)
 234 #define ACER_CAP_BLUETOOTH              BIT(2)
 235 #define ACER_CAP_BRIGHTNESS             BIT(3)
 236 #define ACER_CAP_THREEG                 BIT(4)
 237 #define ACER_CAP_SET_FUNCTION_MODE      BIT(5)
 238 #define ACER_CAP_KBD_DOCK               BIT(6)
 239
 240 /*
 241  * Interface type flags
 242  */
 243 enum interface_flags {
 244         ACER_AMW0,
 245         ACER_AMW0_V2,
 246         ACER_WMID,
 247         ACER_WMID_v2,
 248 };
 249
 250 #define ACER_DEFAULT_WIRELESS  0
 251 #define ACER_DEFAULT_BLUETOOTH 0
 252 #define ACER_DEFAULT_MAILLED   0
 253 #define ACER_DEFAULT_THREEG    0
 254
 255 static int max_brightness = 0xF;
 256
 257 static int mailled = -1;
 258 static int brightness = -1;
 259 static int threeg = -1;
 260 static int force_series;
 261 static int force_caps = -1;
 262 static bool ec_raw_mode;
 263 static bool has_type_aa;
 264 static u16 commun_func_bitmap;
 265 static u8 commun_fn_key_number;
 266
 267 module_param(mailled, int, 0444);
 268 module_param(brightness, int, 0444);
 269 module_param(threeg, int, 0444);
 270 module_param(force_series, int, 0444);
 271 module_param(force_caps, int, 0444);
 272 module_param(ec_raw_mode, bool, 0444);
 273 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 274 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 275 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 276 MODULE_PARM_DESC(force_series, "Force a different laptop series");
 277 MODULE_PARM_DESC(force_caps, "Force the capability bitmask to this value");
 278 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 279
 280 struct acer_data {
 281         int mailled;
 282         int threeg;
 283         int brightness;
 284 };
 285
 286 struct acer_debug {
 287         struct dentry *root;
 288         struct dentry *devices;
 289         u32 wmid_devices;
 290 };
 291
 292 static struct rfkill *wireless_rfkill;
 293 static struct rfkill *bluetooth_rfkill;
 294 static struct rfkill *threeg_rfkill;
 295 static bool rfkill_inited;
 296
 297 /* Each low-level interface must define at least some of the following */
 298 struct wmi_interface {
 299         /* The WMI device type */
 300         u32 type;
 301
 302         /* The capabilities this interface provides */
 303         u32 capability;
 304
 305         /* Private data for the current interface */
 306         struct acer_data data;
 307
 308         /* debugfs entries associated with this interface */
 309         struct acer_debug debug;
 310 };
 311
 312 /* The static interface pointer, points to the currently detected interface */
 313 static struct wmi_interface *interface;
 314
 315 /*
 316  * Embedded Controller quirks
 317  * Some laptops require us to directly access the EC to either enable or query
 318  * features that are not available through WMI.
 319  */
 320
 321 struct quirk_entry {
 322         u8 wireless;
 323         u8 mailled;
 324         s8 brightness;
 325         u8 bluetooth;
 326 };
 327
 328 static struct quirk_entry *quirks;
 329
 330 static void __init set_quirks(void)
 331 {
 332         if (!interface)
 333                 return;
 334
 335         if (quirks->mailled)
 336                 interface->capability |= ACER_CAP_MAILLED;
 337
 338         if (quirks->brightness)
 339                 interface->capability |= ACER_CAP_BRIGHTNESS;
 340 }
 341
 342 static int __init dmi_matched(const struct dmi_system_id *dmi)
 343 {
 344         quirks = dmi->driver_data;
 345         return 1;
 346 }
 347
 348 static int __init set_force_caps(const struct dmi_system_id *dmi)
 349 {
 350         if (force_caps == -1) {
 351                 force_caps = (uintptr_t)dmi->driver_data;
 352                 pr_info("Found %s, set force_caps to 0x%x\n", dmi->ident, force_caps);
 353         }
 354         return 1;
 355 }
 356
 357 static struct quirk_entry quirk_unknown = {
 358 };
 359
 360 static struct quirk_entry quirk_acer_aspire_1520 = {
 361         .brightness = -1,
 362 };
 363
 364 static struct quirk_entry quirk_acer_travelmate_2490 = {
 365         .mailled = 1,
 366 };
 367
 368 /* This AMW0 laptop has no bluetooth */
 369 static struct quirk_entry quirk_medion_md_98300 = {
 370         .wireless = 1,
 371 };
 372
 373 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 374         .wireless = 2,
 375 };
 376
 377 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 378         .wireless = 3,
 379 };
 380
 381 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
 382 static const struct dmi_system_id acer_blacklist[] __initconst = {
 383         {
 384                 .ident = "Acer Aspire One (SSD)",
 385                 .matches = {
 386                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 387                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 388                 },
 389         },
 390         {
 391                 .ident = "Acer Aspire One (HDD)",
 392                 .matches = {
 393                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 394                         DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 395                 },
 396         },
 397         {}
 398 };
 399
 400 static const struct dmi_system_id amw0_whitelist[] __initconst = {
 401         {
 402                 .ident = "Acer",
 403                 .matches = {
 404                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 405                 },
 406         },
 407         {
 408                 .ident = "Gateway",
 409                 .matches = {
 410                         DMI_MATCH(DMI_SYS_VENDOR, "Gateway"),
 411                 },
 412         },
 413         {
 414                 .ident = "Packard Bell",
 415                 .matches = {
 416                         DMI_MATCH(DMI_SYS_VENDOR, "Packard Bell"),
 417                 },
 418         },
 419         {}
 420 };
 421
 422 /*
 423  * This quirk table is only for Acer/Gateway/Packard Bell family
 424  * that those machines are supported by acer-wmi driver.
 425  */
 426 static const struct dmi_system_id acer_quirks[] __initconst = {
 427         {
 428                 .callback = dmi_matched,
 429                 .ident = "Acer Aspire 1360",
 430                 .matches = {
 431                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 432                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 433                 },
 434                 .driver_data = &quirk_acer_aspire_1520,
 435         },
 436         {
 437                 .callback = dmi_matched,
 438                 .ident = "Acer Aspire 1520",
 439                 .matches = {
 440                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 441                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 442                 },
 443                 .driver_data = &quirk_acer_aspire_1520,
 444         },
 445         {
 446                 .callback = dmi_matched,
 447                 .ident = "Acer Aspire 3100",
 448                 .matches = {
 449                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 450                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 451                 },
 452                 .driver_data = &quirk_acer_travelmate_2490,
 453         },
 454         {
 455                 .callback = dmi_matched,
 456                 .ident = "Acer Aspire 3610",
 457                 .matches = {
 458                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 459                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 460                 },
 461                 .driver_data = &quirk_acer_travelmate_2490,
 462         },
 463         {
 464                 .callback = dmi_matched,
 465                 .ident = "Acer Aspire 5100",
 466                 .matches = {
 467                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 468                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 469                 },
 470                 .driver_data = &quirk_acer_travelmate_2490,
 471         },
 472         {
 473                 .callback = dmi_matched,
 474                 .ident = "Acer Aspire 5610",
 475                 .matches = {
 476                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 477                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 478                 },
 479                 .driver_data = &quirk_acer_travelmate_2490,
 480         },
 481         {
 482                 .callback = dmi_matched,
 483                 .ident = "Acer Aspire 5630",
 484                 .matches = {
 485                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 486                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 487                 },
 488                 .driver_data = &quirk_acer_travelmate_2490,
 489         },
 490         {
 491                 .callback = dmi_matched,
 492                 .ident = "Acer Aspire 5650",
 493                 .matches = {
 494                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 495                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 496                 },
 497                 .driver_data = &quirk_acer_travelmate_2490,
 498         },
 499         {
 500                 .callback = dmi_matched,
 501                 .ident = "Acer Aspire 5680",
 502                 .matches = {
 503                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 504                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 505                 },
 506                 .driver_data = &quirk_acer_travelmate_2490,
 507         },
 508         {
 509                 .callback = dmi_matched,
 510                 .ident = "Acer Aspire 9110",
 511                 .matches = {
 512                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 513                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 514                 },
 515                 .driver_data = &quirk_acer_travelmate_2490,
 516         },
 517         {
 518                 .callback = dmi_matched,
 519                 .ident = "Acer TravelMate 2490",
 520                 .matches = {
 521                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 522                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 523                 },
 524                 .driver_data = &quirk_acer_travelmate_2490,
 525         },
 526         {
 527                 .callback = dmi_matched,
 528                 .ident = "Acer TravelMate 4200",
 529                 .matches = {
 530                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 531                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 532                 },
 533                 .driver_data = &quirk_acer_travelmate_2490,
 534         },
 535         {
 536                 .callback = set_force_caps,
 537                 .ident = "Acer Aspire Switch 10E SW3-016",
 538                 .matches = {
 539                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 540                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire SW3-016"),
 541                 },
 542                 .driver_data = (void *)ACER_CAP_KBD_DOCK,
 543         },
 544         {
 545                 .callback = set_force_caps,
 546                 .ident = "Acer Aspire Switch 10 SW5-012",
 547                 .matches = {
 548                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 549                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire SW5-012"),
 550                 },
 551                 .driver_data = (void *)ACER_CAP_KBD_DOCK,
 552         },
 553         {
 554                 .callback = set_force_caps,
 555                 .ident = "Acer One 10 (S1003)",
 556                 .matches = {
 557                         DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"),
 558                         DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "One S1003"),
 559                 },
 560                 .driver_data = (void *)ACER_CAP_KBD_DOCK,
 561         },
 562         {}
 563 };
 564
 565 /*
 566  * This quirk list is for those non-acer machines that have AMW0_GUID1
 567  * but supported by acer-wmi in past days. Keeping this quirk list here
 568  * is only for backward compatible. Please do not add new machine to
 569  * here anymore. Those non-acer machines should be supported by
 570  * appropriate wmi drivers.
 571  */
 572 static const struct dmi_system_id non_acer_quirks[] __initconst = {
 573         {
 574                 .callback = dmi_matched,
 575                 .ident = "Fujitsu Siemens Amilo Li 1718",
 576                 .matches = {
 577                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 578                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 579                 },
 580                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 581         },
 582         {
 583                 .callback = dmi_matched,
 584                 .ident = "Medion MD 98300",
 585                 .matches = {
 586                         DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 587                         DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 588                 },
 589                 .driver_data = &quirk_medion_md_98300,
 590         },
 591         {
 592                 .callback = dmi_matched,
 593                 .ident = "Lenovo Ideapad S205",
 594                 .matches = {
 595                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 596                         DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 597                 },
 598                 .driver_data = &quirk_lenovo_ideapad_s205,
 599         },
 600         {
 601                 .callback = dmi_matched,
 602                 .ident = "Lenovo Ideapad S205 (Brazos)",
 603                 .matches = {
 604                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 605                         DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 606                 },
 607                 .driver_data = &quirk_lenovo_ideapad_s205,
 608         },
 609         {
 610                 .callback = dmi_matched,
 611                 .ident = "Lenovo 3000 N200",
 612                 .matches = {
 613                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 614                         DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 615                 },
 616                 .driver_data = &quirk_fujitsu_amilo_li_1718,
 617         },
 618         {
 619                 .callback = dmi_matched,
 620                 .ident = "Lenovo Ideapad S205-10382JG",
 621                 .matches = {
 622                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 623                         DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
 624                 },
 625                 .driver_data = &quirk_lenovo_ideapad_s205,
 626         },
 627         {
 628                 .callback = dmi_matched,
 629                 .ident = "Lenovo Ideapad S205-1038DPG",
 630                 .matches = {
 631                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 632                         DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
 633                 },
 634                 .driver_data = &quirk_lenovo_ideapad_s205,
 635         },
 636         {}
 637 };
 638
 639 static int __init
 640 video_set_backlight_video_vendor(const struct dmi_system_id *d)
 641 {
 642         interface->capability &= ~ACER_CAP_BRIGHTNESS;
 643         pr_info("Brightness must be controlled by generic video driver\n");
 644         return 0;
 645 }
 646
 647 static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
 648         {
 649                 .callback = video_set_backlight_video_vendor,
 650                 .ident = "Acer TravelMate 4750",
 651                 .matches = {
 652                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 653                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 654                 },
 655         },
 656         {
 657                 .callback = video_set_backlight_video_vendor,
 658                 .ident = "Acer Extensa 5235",
 659                 .matches = {
 660                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 661                         DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 662                 },
 663         },
 664         {
 665                 .callback = video_set_backlight_video_vendor,
 666                 .ident = "Acer TravelMate 5760",
 667                 .matches = {
 668                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 669                         DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 670                 },
 671         },
 672         {
 673                 .callback = video_set_backlight_video_vendor,
 674                 .ident = "Acer Aspire 5750",
 675                 .matches = {
 676                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 677                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 678                 },
 679         },
 680         {
 681                 .callback = video_set_backlight_video_vendor,
 682                 .ident = "Acer Aspire 5741",
 683                 .matches = {
 684                         DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 685                         DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
 686                 },
 687         },
 688         {
 689                 /*
 690                  * Note no video_set_backlight_video_vendor, we must use the
 691                  * acer interface, as there is no native backlight interface.
 692                  */
 693                 .ident = "Acer KAV80",
 694                 .matches = {
 695                         DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 696                         DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
 697                 },
 698         },
 699         {}
 700 };
 701
 702 /* Find which quirks are needed for a particular vendor/ model pair */
 703 static void __init find_quirks(void)
 704 {
 705         if (!force_series) {
 706                 dmi_check_system(acer_quirks);
 707                 dmi_check_system(non_acer_quirks);
 708         } else if (force_series == 2490) {
 709                 quirks = &quirk_acer_travelmate_2490;
 710         }
 711
 712         if (quirks == NULL)
 713                 quirks = &quirk_unknown;
 714
 715         set_quirks();
 716 }
 717
 718 /*
 719  * General interface convenience methods
 720  */
 721
 722 static bool has_cap(u32 cap)
 723 {
 724         return interface->capability & cap;
 725 }
 726
 727 /*
 728  * AMW0 (V1) interface
 729  */
 730 struct wmab_args {
 731         u32 eax;
 732         u32 ebx;
 733         u32 ecx;
 734         u32 edx;
 735 };
 736
 737 struct wmab_ret {
 738         u32 eax;
 739         u32 ebx;
 740         u32 ecx;
 741         u32 edx;
 742         u32 eex;
 743 };
 744
 745 static acpi_status wmab_execute(struct wmab_args *regbuf,
 746 struct acpi_buffer *result)
 747 {
 748         struct acpi_buffer input;
 749         acpi_status status;
 750         input.length = sizeof(struct wmab_args);
 751         input.pointer = (u8 *)regbuf;
 752
 753         status = wmi_evaluate_method(AMW0_GUID1, 0, 1, &input, result);
 754
 755         return status;
 756 }
 757
 758 static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 759 {
 760         int err;
 761         u8 result;
 762
 763         switch (cap) {
 764         case ACER_CAP_MAILLED:
 765                 switch (quirks->mailled) {
 766                 default:
 767                         err = ec_read(0xA, &result);
 768                         if (err)
 769                                 return AE_ERROR;
 770                         *value = (result >> 7) & 0x1;
 771                         return AE_OK;
 772                 }
 773                 break;
 774         case ACER_CAP_WIRELESS:
 775                 switch (quirks->wireless) {
 776                 case 1:
 777                         err = ec_read(0x7B, &result);
 778                         if (err)
 779                                 return AE_ERROR;
 780                         *value = result & 0x1;
 781                         return AE_OK;
 782                 case 2:
 783                         err = ec_read(0x71, &result);
 784                         if (err)
 785                                 return AE_ERROR;
 786                         *value = result & 0x1;
 787                         return AE_OK;
 788                 case 3:
 789                         err = ec_read(0x78, &result);
 790                         if (err)
 791                                 return AE_ERROR;
 792                         *value = result & 0x1;
 793                         return AE_OK;
 794                 default:
 795                         err = ec_read(0xA, &result);
 796                         if (err)
 797                                 return AE_ERROR;
 798                         *value = (result >> 2) & 0x1;
 799                         return AE_OK;
 800                 }
 801                 break;
 802         case ACER_CAP_BLUETOOTH:
 803                 switch (quirks->bluetooth) {
 804                 default:
 805                         err = ec_read(0xA, &result);
 806                         if (err)
 807                                 return AE_ERROR;
 808                         *value = (result >> 4) & 0x1;
 809                         return AE_OK;
 810                 }
 811                 break;
 812         case ACER_CAP_BRIGHTNESS:
 813                 switch (quirks->brightness) {
 814                 default:
 815                         err = ec_read(0x83, &result);
 816                         if (err)
 817                                 return AE_ERROR;
 818                         *value = result;
 819                         return AE_OK;
 820                 }
 821                 break;
 822         default:
 823                 return AE_ERROR;
 824         }
 825         return AE_OK;
 826 }
 827
 828 static acpi_status AMW0_set_u32(u32 value, u32 cap)
 829 {
 830         struct wmab_args args;
 831
 832         args.eax = ACER_AMW0_WRITE;
 833         args.ebx = value ? (1<<8) : 0;
 834         args.ecx = args.edx = 0;
 835
 836         switch (cap) {
 837         case ACER_CAP_MAILLED:
 838                 if (value > 1)
 839                         return AE_BAD_PARAMETER;
 840                 args.ebx |= ACER_AMW0_MAILLED_MASK;
 841                 break;
 842         case ACER_CAP_WIRELESS:
 843                 if (value > 1)
 844                         return AE_BAD_PARAMETER;
 845                 args.ebx |= ACER_AMW0_WIRELESS_MASK;
 846                 break;
 847         case ACER_CAP_BLUETOOTH:
 848                 if (value > 1)
 849                         return AE_BAD_PARAMETER;
 850                 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 851                 break;
 852         case ACER_CAP_BRIGHTNESS:
 853                 if (value > max_brightness)
 854                         return AE_BAD_PARAMETER;
 855                 switch (quirks->brightness) {
 856                 default:
 857                         return ec_write(0x83, value);
 858                         break;
 859                 }
 860         default:
 861                 return AE_ERROR;
 862         }
 863
 864         /* Actually do the set */
 865         return wmab_execute(&args, NULL);
 866 }
 867
 868 static acpi_status __init AMW0_find_mailled(void)
 869 {
 870         struct wmab_args args;
 871         struct wmab_ret ret;
 872         acpi_status status = AE_OK;
 873         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 874         union acpi_object *obj;
 875
 876         args.eax = 0x86;
 877         args.ebx = args.ecx = args.edx = 0;
 878
 879         status = wmab_execute(&args, &out);
 880         if (ACPI_FAILURE(status))
 881                 return status;
 882
 883         obj = (union acpi_object *) out.pointer;
 884         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 885         obj->buffer.length == sizeof(struct wmab_ret)) {
 886                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 887         } else {
 888                 kfree(out.pointer);
 889                 return AE_ERROR;
 890         }
 891
 892         if (ret.eex & 0x1)
 893                 interface->capability |= ACER_CAP_MAILLED;
 894
 895         kfree(out.pointer);
 896
 897         return AE_OK;
 898 }
 899
 900 static const struct acpi_device_id norfkill_ids[] __initconst = {
 901         { "VPC2004", 0},
 902         { "IBM0068", 0},
 903         { "LEN0068", 0},
 904         { "SNY5001", 0},        /* sony-laptop in charge */
 905         { "HPQ6601", 0},
 906         { "", 0},
 907 };
 908
 909 static int __init AMW0_set_cap_acpi_check_device(void)
 910 {
 911         const struct acpi_device_id *id;
 912
 913         for (id = norfkill_ids; id->id[0]; id++)
 914                 if (acpi_dev_found(id->id))
 915                         return true;
 916
 917         return false;
 918 }
 919
 920 static acpi_status __init AMW0_set_capabilities(void)
 921 {
 922         struct wmab_args args;
 923         struct wmab_ret ret;
 924         acpi_status status;
 925         struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 926         union acpi_object *obj;
 927
 928         /*
 929          * On laptops with this strange GUID (non Acer), normal probing doesn't
 930          * work.
 931          */
 932         if (wmi_has_guid(AMW0_GUID2)) {
 933                 if ((quirks != &quirk_unknown) ||
 934                     !AMW0_set_cap_acpi_check_device())
 935                         interface->capability |= ACER_CAP_WIRELESS;
 936                 return AE_OK;
 937         }
 938
 939         args.eax = ACER_AMW0_WRITE;
 940         args.ecx = args.edx = 0;
 941
 942         args.ebx = 0xa2 << 8;
 943         args.ebx |= ACER_AMW0_WIRELESS_MASK;
 944
 945         status = wmab_execute(&args, &out);
 946         if (ACPI_FAILURE(status))
 947                 return status;
 948
 949         obj = out.pointer;
 950         if (obj && obj->type == ACPI_TYPE_BUFFER &&
 951         obj->buffer.length == sizeof(struct wmab_ret)) {
 952                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 953         } else {
 954                 status = AE_ERROR;
 955                 goto out;
 956         }
 957
 958         if (ret.eax & 0x1)
 959                 interface->capability |= ACER_CAP_WIRELESS;
 960
 961         args.ebx = 2 << 8;
 962         args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 963
 964         /*
 965          * It's ok to use existing buffer for next wmab_execute call.
 966          * But we need to kfree(out.pointer) if next wmab_execute fail.
 967          */
 968         status = wmab_execute(&args, &out);
 969         if (ACPI_FAILURE(status))
 970                 goto out;
 971
 972         obj = (union acpi_object *) out.pointer;
 973         if (obj && obj->type == ACPI_TYPE_BUFFER
 974         && obj->buffer.length == sizeof(struct wmab_ret)) {
 975                 ret = *((struct wmab_ret *) obj->buffer.pointer);
 976         } else {
 977                 status = AE_ERROR;
 978                 goto out;
 979         }
 980
 981         if (ret.eax & 0x1)
 982                 interface->capability |= ACER_CAP_BLUETOOTH;
 983
 984         /*
 985          * This appears to be safe to enable, since all Wistron based laptops
 986          * appear to use the same EC register for brightness, even if they
 987          * differ for wireless, etc
 988          */
 989         if (quirks->brightness >= 0)
 990                 interface->capability |= ACER_CAP_BRIGHTNESS;
 991
 992         status = AE_OK;
 993 out:
 994         kfree(out.pointer);
 995         return status;
 996 }
 997
 998 static struct wmi_interface AMW0_interface = {
 999         .type = ACER_AMW0,
1000 };
1001
1002 static struct wmi_interface AMW0_V2_interface = {
1003         .type = ACER_AMW0_V2,
1004 };
1005
1006 /*
1007  * New interface (The WMID interface)
1008  */
1009 static acpi_status
1010 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
1011 {
1012         struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
1013         struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
1014         union acpi_object *obj;
1015         u32 tmp = 0;
1016         acpi_status status;
1017
1018         status = wmi_evaluate_method(WMID_GUID1, 0, method_id, &input, &result);
1019
1020         if (ACPI_FAILURE(status))
1021                 return status;
1022
1023         obj = (union acpi_object *) result.pointer;
1024         if (obj) {
1025                 if (obj->type == ACPI_TYPE_BUFFER &&
1026                         (obj->buffer.length == sizeof(u32) ||
1027                         obj->buffer.length == sizeof(u64))) {
1028                         tmp = *((u32 *) obj->buffer.pointer);
1029                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1030                         tmp = (u32) obj->integer.value;
1031                 }
1032         }
1033
1034         if (out)
1035                 *out = tmp;
1036
1037         kfree(result.pointer);
1038
1039         return status;
1040 }
1041
1042 static acpi_status WMID_get_u32(u32 *value, u32 cap)
1043 {
1044         acpi_status status;
1045         u8 tmp;
1046         u32 result, method_id = 0;
1047
1048         switch (cap) {
1049         case ACER_CAP_WIRELESS:
1050                 method_id = ACER_WMID_GET_WIRELESS_METHODID;
1051                 break;
1052         case ACER_CAP_BLUETOOTH:
1053                 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
1054                 break;
1055         case ACER_CAP_BRIGHTNESS:
1056                 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
1057                 break;
1058         case ACER_CAP_THREEG:
1059                 method_id = ACER_WMID_GET_THREEG_METHODID;
1060                 break;
1061         case ACER_CAP_MAILLED:
1062                 if (quirks->mailled == 1) {
1063                         ec_read(0x9f, &tmp);
1064                         *value = tmp & 0x1;
1065                         return 0;
1066                 }
1067         default:
1068                 return AE_ERROR;
1069         }
1070         status = WMI_execute_u32(method_id, 0, &result);
1071
1072         if (ACPI_SUCCESS(status))
1073                 *value = (u8)result;
1074
1075         return status;
1076 }
1077
1078 static acpi_status WMID_set_u32(u32 value, u32 cap)
1079 {
1080         u32 method_id = 0;
1081         char param;
1082
1083         switch (cap) {
1084         case ACER_CAP_BRIGHTNESS:
1085                 if (value > max_brightness)
1086                         return AE_BAD_PARAMETER;
1087                 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
1088                 break;
1089         case ACER_CAP_WIRELESS:
1090                 if (value > 1)
1091                         return AE_BAD_PARAMETER;
1092                 method_id = ACER_WMID_SET_WIRELESS_METHODID;
1093                 break;
1094         case ACER_CAP_BLUETOOTH:
1095                 if (value > 1)
1096                         return AE_BAD_PARAMETER;
1097                 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
1098                 break;
1099         case ACER_CAP_THREEG:
1100                 if (value > 1)
1101                         return AE_BAD_PARAMETER;
1102                 method_id = ACER_WMID_SET_THREEG_METHODID;
1103                 break;
1104         case ACER_CAP_MAILLED:
1105                 if (value > 1)
1106                         return AE_BAD_PARAMETER;
1107                 if (quirks->mailled == 1) {
1108                         param = value ? 0x92 : 0x93;
1109                         i8042_lock_chip();
1110                         i8042_command(&param, 0x1059);
1111                         i8042_unlock_chip();
1112                         return 0;
1113                 }
1114                 break;
1115         default:
1116                 return AE_ERROR;
1117         }
1118         return WMI_execute_u32(method_id, (u32)value, NULL);
1119 }
1120
1121 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1122 {
1123         struct wmid3_gds_return_value return_value;
1124         acpi_status status;
1125         union acpi_object *obj;
1126         struct wmid3_gds_get_input_param params = {
1127                 .function_num = 0x1,
1128                 .hotkey_number = commun_fn_key_number,
1129                 .devices = device,
1130         };
1131         struct acpi_buffer input = {
1132                 sizeof(struct wmid3_gds_get_input_param),
1133                 &params
1134         };
1135         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1136
1137         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1138         if (ACPI_FAILURE(status))
1139                 return status;
1140
1141         obj = output.pointer;
1142
1143         if (!obj)
1144                 return AE_ERROR;
1145         else if (obj->type != ACPI_TYPE_BUFFER) {
1146                 kfree(obj);
1147                 return AE_ERROR;
1148         }
1149         if (obj->buffer.length != 8) {
1150                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1151                 kfree(obj);
1152                 return AE_ERROR;
1153         }
1154
1155         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1156         kfree(obj);
1157
1158         if (return_value.error_code || return_value.ec_return_value)
1159                 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1160                         device,
1161                         return_value.error_code,
1162                         return_value.ec_return_value);
1163         else
1164                 *value = !!(return_value.devices & device);
1165
1166         return status;
1167 }
1168
1169 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1170 {
1171         u16 device;
1172
1173         switch (cap) {
1174         case ACER_CAP_WIRELESS:
1175                 device = ACER_WMID3_GDS_WIRELESS;
1176                 break;
1177         case ACER_CAP_BLUETOOTH:
1178                 device = ACER_WMID3_GDS_BLUETOOTH;
1179                 break;
1180         case ACER_CAP_THREEG:
1181                 device = ACER_WMID3_GDS_THREEG;
1182                 break;
1183         default:
1184                 return AE_ERROR;
1185         }
1186         return wmid3_get_device_status(value, device);
1187 }
1188
1189 static acpi_status wmid3_set_device_status(u32 value, u16 device)
1190 {
1191         struct wmid3_gds_return_value return_value;
1192         acpi_status status;
1193         union acpi_object *obj;
1194         u16 devices;
1195         struct wmid3_gds_get_input_param get_params = {
1196                 .function_num = 0x1,
1197                 .hotkey_number = commun_fn_key_number,
1198                 .devices = commun_func_bitmap,
1199         };
1200         struct acpi_buffer get_input = {
1201                 sizeof(struct wmid3_gds_get_input_param),
1202                 &get_params
1203         };
1204         struct wmid3_gds_set_input_param set_params = {
1205                 .function_num = 0x2,
1206                 .hotkey_number = commun_fn_key_number,
1207                 .devices = commun_func_bitmap,
1208         };
1209         struct acpi_buffer set_input = {
1210                 sizeof(struct wmid3_gds_set_input_param),
1211                 &set_params
1212         };
1213         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1214         struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1215
1216         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1217         if (ACPI_FAILURE(status))
1218                 return status;
1219
1220         obj = output.pointer;
1221
1222         if (!obj)
1223                 return AE_ERROR;
1224         else if (obj->type != ACPI_TYPE_BUFFER) {
1225                 kfree(obj);
1226                 return AE_ERROR;
1227         }
1228         if (obj->buffer.length != 8) {
1229                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1230                 kfree(obj);
1231                 return AE_ERROR;
1232         }
1233
1234         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1235         kfree(obj);
1236
1237         if (return_value.error_code || return_value.ec_return_value) {
1238                 pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1239                         return_value.error_code,
1240                         return_value.ec_return_value);
1241                 return status;
1242         }
1243
1244         devices = return_value.devices;
1245         set_params.devices = (value) ? (devices | device) : (devices & ~device);
1246
1247         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1248         if (ACPI_FAILURE(status))
1249                 return status;
1250
1251         obj = output2.pointer;
1252
1253         if (!obj)
1254                 return AE_ERROR;
1255         else if (obj->type != ACPI_TYPE_BUFFER) {
1256                 kfree(obj);
1257                 return AE_ERROR;
1258         }
1259         if (obj->buffer.length != 4) {
1260                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1261                 kfree(obj);
1262                 return AE_ERROR;
1263         }
1264
1265         return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1266         kfree(obj);
1267
1268         if (return_value.error_code || return_value.ec_return_value)
1269                 pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1270                         return_value.error_code,
1271                         return_value.ec_return_value);
1272
1273         return status;
1274 }
1275
1276 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1277 {
1278         u16 device;
1279
1280         switch (cap) {
1281         case ACER_CAP_WIRELESS:
1282                 device = ACER_WMID3_GDS_WIRELESS;
1283                 break;
1284         case ACER_CAP_BLUETOOTH:
1285                 device = ACER_WMID3_GDS_BLUETOOTH;
1286                 break;
1287         case ACER_CAP_THREEG:
1288                 device = ACER_WMID3_GDS_THREEG;
1289                 break;
1290         default:
1291                 return AE_ERROR;
1292         }
1293         return wmid3_set_device_status(value, device);
1294 }
1295
1296 static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1297 {
1298         struct hotkey_function_type_aa *type_aa;
1299
1300         /* We are looking for OEM-specific Type AAh */
1301         if (header->type != 0xAA)
1302                 return;
1303
1304         has_type_aa = true;
1305         type_aa = (struct hotkey_function_type_aa *) header;
1306
1307         pr_info("Function bitmap for Communication Button: 0x%x\n",
1308                 type_aa->commun_func_bitmap);
1309         commun_func_bitmap = type_aa->commun_func_bitmap;
1310
1311         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1312                 interface->capability |= ACER_CAP_WIRELESS;
1313         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1314                 interface->capability |= ACER_CAP_THREEG;
1315         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1316                 interface->capability |= ACER_CAP_BLUETOOTH;
1317         if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_RFBTN)
1318                 commun_func_bitmap &= ~ACER_WMID3_GDS_RFBTN;
1319
1320         commun_fn_key_number = type_aa->commun_fn_key_number;
1321 }
1322
1323 static acpi_status __init WMID_set_capabilities(void)
1324 {
1325         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1326         union acpi_object *obj;
1327         acpi_status status;
1328         u32 devices;
1329
1330         status = wmi_query_block(WMID_GUID2, 0, &out);
1331         if (ACPI_FAILURE(status))
1332                 return status;
1333
1334         obj = (union acpi_object *) out.pointer;
1335         if (obj) {
1336                 if (obj->type == ACPI_TYPE_BUFFER &&
1337                         (obj->buffer.length == sizeof(u32) ||
1338                         obj->buffer.length == sizeof(u64))) {
1339                         devices = *((u32 *) obj->buffer.pointer);
1340                 } else if (obj->type == ACPI_TYPE_INTEGER) {
1341                         devices = (u32) obj->integer.value;
1342                 } else {
1343                         kfree(out.pointer);
1344                         return AE_ERROR;
1345                 }
1346         } else {
1347                 kfree(out.pointer);
1348                 return AE_ERROR;
1349         }
1350
1351         pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1352         if (devices & 0x07)
1353                 interface->capability |= ACER_CAP_WIRELESS;
1354         if (devices & 0x40)
1355                 interface->capability |= ACER_CAP_THREEG;
1356         if (devices & 0x10)
1357                 interface->capability |= ACER_CAP_BLUETOOTH;
1358
1359         if (!(devices & 0x20))
1360                 max_brightness = 0x9;
1361
1362         kfree(out.pointer);
1363         return status;
1364 }
1365
1366 static struct wmi_interface wmid_interface = {
1367         .type = ACER_WMID,
1368 };
1369
1370 static struct wmi_interface wmid_v2_interface = {
1371         .type = ACER_WMID_v2,
1372 };
1373
1374 /*
1375  * Generic Device (interface-independent)
1376  */
1377
1378 static acpi_status get_u32(u32 *value, u32 cap)
1379 {
1380         acpi_status status = AE_ERROR;
1381
1382         switch (interface->type) {
1383         case ACER_AMW0:
1384                 status = AMW0_get_u32(value, cap);
1385                 break;
1386         case ACER_AMW0_V2:
1387                 if (cap == ACER_CAP_MAILLED) {
1388                         status = AMW0_get_u32(value, cap);
1389                         break;
1390                 }
1391         case ACER_WMID:
1392                 status = WMID_get_u32(value, cap);
1393                 break;
1394         case ACER_WMID_v2:
1395                 if (cap & (ACER_CAP_WIRELESS |
1396                            ACER_CAP_BLUETOOTH |
1397                            ACER_CAP_THREEG))
1398                         status = wmid_v2_get_u32(value, cap);
1399                 else if (wmi_has_guid(WMID_GUID2))
1400                         status = WMID_get_u32(value, cap);
1401                 break;
1402         }
1403
1404         return status;
1405 }
1406
1407 static acpi_status set_u32(u32 value, u32 cap)
1408 {
1409         acpi_status status;
1410
1411         if (interface->capability & cap) {
1412                 switch (interface->type) {
1413                 case ACER_AMW0:
1414                         return AMW0_set_u32(value, cap);
1415                 case ACER_AMW0_V2:
1416                         if (cap == ACER_CAP_MAILLED)
1417                                 return AMW0_set_u32(value, cap);
1418
1419                         /*
1420                          * On some models, some WMID methods don't toggle
1421                          * properly. For those cases, we want to run the AMW0
1422                          * method afterwards to be certain we've really toggled
1423                          * the device state.
1424                          */
1425                         if (cap == ACER_CAP_WIRELESS ||
1426                                 cap == ACER_CAP_BLUETOOTH) {
1427                                 status = WMID_set_u32(value, cap);
1428                                 if (ACPI_FAILURE(status))
1429                                         return status;
1430
1431                                 return AMW0_set_u32(value, cap);
1432                         }
1433                 case ACER_WMID:
1434                         return WMID_set_u32(value, cap);
1435                 case ACER_WMID_v2:
1436                         if (cap & (ACER_CAP_WIRELESS |
1437                                    ACER_CAP_BLUETOOTH |
1438                                    ACER_CAP_THREEG))
1439                                 return wmid_v2_set_u32(value, cap);
1440                         else if (wmi_has_guid(WMID_GUID2))
1441                                 return WMID_set_u32(value, cap);
1442                 default:
1443                         return AE_BAD_PARAMETER;
1444                 }
1445         }
1446         return AE_BAD_PARAMETER;
1447 }
1448
1449 static void __init acer_commandline_init(void)
1450 {
1451         /*
1452          * These will all fail silently if the value given is invalid, or the
1453          * capability isn't available on the given interface
1454          */
1455         if (mailled >= 0)
1456                 set_u32(mailled, ACER_CAP_MAILLED);
1457         if (!has_type_aa && threeg >= 0)
1458                 set_u32(threeg, ACER_CAP_THREEG);
1459         if (brightness >= 0)
1460                 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1461 }
1462
1463 /*
1464  * LED device (Mail LED only, no other LEDs known yet)
1465  */
1466 static void mail_led_set(struct led_classdev *led_cdev,
1467 enum led_brightness value)
1468 {
1469         set_u32(value, ACER_CAP_MAILLED);
1470 }
1471
1472 static struct led_classdev mail_led = {
1473         .name = "acer-wmi::mail",
1474         .brightness_set = mail_led_set,
1475 };
1476
1477 static int acer_led_init(struct device *dev)
1478 {
1479         return led_classdev_register(dev, &mail_led);
1480 }
1481
1482 static void acer_led_exit(void)
1483 {
1484         set_u32(LED_OFF, ACER_CAP_MAILLED);
1485         led_classdev_unregister(&mail_led);
1486 }
1487
1488 /*
1489  * Backlight device
1490  */
1491 static struct backlight_device *acer_backlight_device;
1492
1493 static int read_brightness(struct backlight_device *bd)
1494 {
1495         u32 value;
1496         get_u32(&value, ACER_CAP_BRIGHTNESS);
1497         return value;
1498 }
1499
1500 static int update_bl_status(struct backlight_device *bd)
1501 {
1502         int intensity = bd->props.brightness;
1503
1504         if (bd->props.power != FB_BLANK_UNBLANK)
1505                 intensity = 0;
1506         if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1507                 intensity = 0;
1508
1509         set_u32(intensity, ACER_CAP_BRIGHTNESS);
1510
1511         return 0;
1512 }
1513
1514 static const struct backlight_ops acer_bl_ops = {
1515         .get_brightness = read_brightness,
1516         .update_status = update_bl_status,
1517 };
1518
1519 static int acer_backlight_init(struct device *dev)
1520 {
1521         struct backlight_properties props;
1522         struct backlight_device *bd;
1523
1524         memset(&props, 0, sizeof(struct backlight_properties));
1525         props.type = BACKLIGHT_PLATFORM;
1526         props.max_brightness = max_brightness;
1527         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1528                                        &props);
1529         if (IS_ERR(bd)) {
1530                 pr_err("Could not register Acer backlight device\n");
1531                 acer_backlight_device = NULL;
1532                 return PTR_ERR(bd);
1533         }
1534
1535         acer_backlight_device = bd;
1536
1537         bd->props.power = FB_BLANK_UNBLANK;
1538         bd->props.brightness = read_brightness(bd);
1539         backlight_update_status(bd);
1540         return 0;
1541 }
1542
1543 static void acer_backlight_exit(void)
1544 {
1545         backlight_device_unregister(acer_backlight_device);
1546 }
1547
1548 /*
1549  * Accelerometer device
1550  */
1551 static acpi_handle gsensor_handle;
1552
1553 static int acer_gsensor_init(void)
1554 {
1555         acpi_status status;
1556         struct acpi_buffer output;
1557         union acpi_object out_obj;
1558
1559         output.length = sizeof(out_obj);
1560         output.pointer = &out_obj;
1561         status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1562         if (ACPI_FAILURE(status))
1563                 return -1;
1564
1565         return 0;
1566 }
1567
1568 static int acer_gsensor_open(struct input_dev *input)
1569 {
1570         return acer_gsensor_init();
1571 }
1572
1573 static int acer_gsensor_event(void)
1574 {
1575         acpi_status status;
1576         struct acpi_buffer output;
1577         union acpi_object out_obj[5];
1578
1579         if (!acer_wmi_accel_dev)
1580                 return -1;
1581
1582         output.length = sizeof(out_obj);
1583         output.pointer = out_obj;
1584
1585         status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1586         if (ACPI_FAILURE(status))
1587                 return -1;
1588
1589         if (out_obj->package.count != 4)
1590                 return -1;
1591
1592         input_report_abs(acer_wmi_accel_dev, ABS_X,
1593                 (s16)out_obj->package.elements[0].integer.value);
1594         input_report_abs(acer_wmi_accel_dev, ABS_Y,
1595                 (s16)out_obj->package.elements[1].integer.value);
1596         input_report_abs(acer_wmi_accel_dev, ABS_Z,
1597                 (s16)out_obj->package.elements[2].integer.value);
1598         input_sync(acer_wmi_accel_dev);
1599         return 0;
1600 }
1601
1602 /*
1603  * Switch series keyboard dock status
1604  */
1605 static int acer_kbd_dock_state_to_sw_tablet_mode(u8 kbd_dock_state)
1606 {
1607         switch (kbd_dock_state) {
1608         case 0x01: /* Docked, traditional clamshell laptop mode */
1609                 return 0;
1610         case 0x04: /* Stand-alone tablet */
1611         case 0x40: /* Docked, tent mode, keyboard not usable */
1612                 return 1;
1613         default:
1614                 pr_warn("Unknown kbd_dock_state 0x%02x\n", kbd_dock_state);
1615         }
1616
1617         return 0;
1618 }
1619
1620 static void acer_kbd_dock_get_initial_state(void)
1621 {
1622         u8 *output, input[8] = { 0x05, 0x00, };
1623         struct acpi_buffer input_buf = { sizeof(input), input };
1624         struct acpi_buffer output_buf = { ACPI_ALLOCATE_BUFFER, NULL };
1625         union acpi_object *obj;
1626         acpi_status status;
1627         int sw_tablet_mode;
1628
1629         status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input_buf, &output_buf);
1630         if (ACPI_FAILURE(status)) {
1631                 ACPI_EXCEPTION((AE_INFO, status, "Error getting keyboard-dock initial status"));
1632                 return;
1633         }
1634
1635         obj = output_buf.pointer;
1636         if (!obj || obj->type != ACPI_TYPE_BUFFER || obj->buffer.length != 8) {
1637                 pr_err("Unexpected output format getting keyboard-dock initial status\n");
1638                 goto out_free_obj;
1639         }
1640
1641         output = obj->buffer.pointer;
1642         if (output[0] != 0x00 || (output[3] != 0x05 && output[3] != 0x45)) {
1643                 pr_err("Unexpected output [0]=0x%02x [3]=0x%02x getting keyboard-dock initial status\n",
1644                        output[0], output[3]);
1645                 goto out_free_obj;
1646         }
1647
1648         sw_tablet_mode = acer_kbd_dock_state_to_sw_tablet_mode(output[4]);
1649         input_report_switch(acer_wmi_input_dev, SW_TABLET_MODE, sw_tablet_mode);
1650
1651 out_free_obj:
1652         kfree(obj);
1653 }
1654
1655 static void acer_kbd_dock_event(const struct event_return_value *event)
1656 {
1657         int sw_tablet_mode;
1658
1659         if (!has_cap(ACER_CAP_KBD_DOCK))
1660                 return;
1661
1662         sw_tablet_mode = acer_kbd_dock_state_to_sw_tablet_mode(event->kbd_dock_state);
1663         input_report_switch(acer_wmi_input_dev, SW_TABLET_MODE, sw_tablet_mode);
1664         input_sync(acer_wmi_input_dev);
1665 }
1666
1667 /*
1668  * Rfkill devices
1669  */
1670 static void acer_rfkill_update(struct work_struct *ignored);
1671 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1672 static void acer_rfkill_update(struct work_struct *ignored)
1673 {
1674         u32 state;
1675         acpi_status status;
1676
1677         if (has_cap(ACER_CAP_WIRELESS)) {
1678                 status = get_u32(&state, ACER_CAP_WIRELESS);
1679                 if (ACPI_SUCCESS(status)) {
1680                         if (quirks->wireless == 3)
1681                                 rfkill_set_hw_state(wireless_rfkill, !state);
1682                         else
1683                                 rfkill_set_sw_state(wireless_rfkill, !state);
1684                 }
1685         }
1686
1687         if (has_cap(ACER_CAP_BLUETOOTH)) {
1688                 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1689                 if (ACPI_SUCCESS(status))
1690                         rfkill_set_sw_state(bluetooth_rfkill, !state);
1691         }
1692
1693         if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1694                 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1695                 if (ACPI_SUCCESS(status))
1696                         rfkill_set_sw_state(threeg_rfkill, !state);
1697         }
1698
1699         schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1700 }
1701
1702 static int acer_rfkill_set(void *data, bool blocked)
1703 {
1704         acpi_status status;
1705         u32 cap = (unsigned long)data;
1706
1707         if (rfkill_inited) {
1708                 status = set_u32(!blocked, cap);
1709                 if (ACPI_FAILURE(status))
1710                         return -ENODEV;
1711         }
1712
1713         return 0;
1714 }
1715
1716 static const struct rfkill_ops acer_rfkill_ops = {
1717         .set_block = acer_rfkill_set,
1718 };
1719
1720 static struct rfkill *acer_rfkill_register(struct device *dev,
1721                                            enum rfkill_type type,
1722                                            char *name, u32 cap)
1723 {
1724         int err;
1725         struct rfkill *rfkill_dev;
1726         u32 state;
1727         acpi_status status;
1728
1729         rfkill_dev = rfkill_alloc(name, dev, type,
1730                                   &acer_rfkill_ops,
1731                                   (void *)(unsigned long)cap);
1732         if (!rfkill_dev)
1733                 return ERR_PTR(-ENOMEM);
1734
1735         status = get_u32(&state, cap);
1736
1737         err = rfkill_register(rfkill_dev);
1738         if (err) {
1739                 rfkill_destroy(rfkill_dev);
1740                 return ERR_PTR(err);
1741         }
1742
1743         if (ACPI_SUCCESS(status))
1744                 rfkill_set_sw_state(rfkill_dev, !state);
1745
1746         return rfkill_dev;
1747 }
1748
1749 static int acer_rfkill_init(struct device *dev)
1750 {
1751         int err;
1752
1753         if (has_cap(ACER_CAP_WIRELESS)) {
1754                 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1755                         "acer-wireless", ACER_CAP_WIRELESS);
1756                 if (IS_ERR(wireless_rfkill)) {
1757                         err = PTR_ERR(wireless_rfkill);
1758                         goto error_wireless;
1759                 }
1760         }
1761
1762         if (has_cap(ACER_CAP_BLUETOOTH)) {
1763                 bluetooth_rfkill = acer_rfkill_register(dev,
1764                         RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1765                         ACER_CAP_BLUETOOTH);
1766                 if (IS_ERR(bluetooth_rfkill)) {
1767                         err = PTR_ERR(bluetooth_rfkill);
1768                         goto error_bluetooth;
1769                 }
1770         }
1771
1772         if (has_cap(ACER_CAP_THREEG)) {
1773                 threeg_rfkill = acer_rfkill_register(dev,
1774                         RFKILL_TYPE_WWAN, "acer-threeg",
1775                         ACER_CAP_THREEG);
1776                 if (IS_ERR(threeg_rfkill)) {
1777                         err = PTR_ERR(threeg_rfkill);
1778                         goto error_threeg;
1779                 }
1780         }
1781
1782         rfkill_inited = true;
1783
1784         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1785             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1786                 schedule_delayed_work(&acer_rfkill_work,
1787                         round_jiffies_relative(HZ));
1788
1789         return 0;
1790
1791 error_threeg:
1792         if (has_cap(ACER_CAP_BLUETOOTH)) {
1793                 rfkill_unregister(bluetooth_rfkill);
1794                 rfkill_destroy(bluetooth_rfkill);
1795         }
1796 error_bluetooth:
1797         if (has_cap(ACER_CAP_WIRELESS)) {
1798                 rfkill_unregister(wireless_rfkill);
1799                 rfkill_destroy(wireless_rfkill);
1800         }
1801 error_wireless:
1802         return err;
1803 }
1804
1805 static void acer_rfkill_exit(void)
1806 {
1807         if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1808             has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1809                 cancel_delayed_work_sync(&acer_rfkill_work);
1810
1811         if (has_cap(ACER_CAP_WIRELESS)) {
1812                 rfkill_unregister(wireless_rfkill);
1813                 rfkill_destroy(wireless_rfkill);
1814         }
1815
1816         if (has_cap(ACER_CAP_BLUETOOTH)) {
1817                 rfkill_unregister(bluetooth_rfkill);
1818                 rfkill_destroy(bluetooth_rfkill);
1819         }
1820
1821         if (has_cap(ACER_CAP_THREEG)) {
1822                 rfkill_unregister(threeg_rfkill);
1823                 rfkill_destroy(threeg_rfkill);
1824         }
1825         return;
1826 }
1827
1828 static void acer_wmi_notify(u32 value, void *context)
1829 {
1830         struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1831         union acpi_object *obj;
1832         struct event_return_value return_value;
1833         acpi_status status;
1834         u16 device_state;
1835         const struct key_entry *key;
1836         u32 scancode;
1837
1838         status = wmi_get_event_data(value, &response);
1839         if (status != AE_OK) {
1840                 pr_warn("bad event status 0x%x\n", status);
1841                 return;
1842         }
1843
1844         obj = (union acpi_object *)response.pointer;
1845
1846         if (!obj)
1847                 return;
1848         if (obj->type != ACPI_TYPE_BUFFER) {
1849                 pr_warn("Unknown response received %d\n", obj->type);
1850                 kfree(obj);
1851                 return;
1852         }
1853         if (obj->buffer.length != 8) {
1854                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1855                 kfree(obj);
1856                 return;
1857         }
1858
1859         return_value = *((struct event_return_value *)obj->buffer.pointer);
1860         kfree(obj);
1861
1862         switch (return_value.function) {
1863         case WMID_HOTKEY_EVENT:
1864                 device_state = return_value.device_state;
1865                 pr_debug("device state: 0x%x\n", device_state);
1866
1867                 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1868                                                         return_value.key_num);
1869                 if (!key) {
1870                         pr_warn("Unknown key number - 0x%x\n",
1871                                 return_value.key_num);
1872                 } else {
1873                         scancode = return_value.key_num;
1874                         switch (key->keycode) {
1875                         case KEY_WLAN:
1876                         case KEY_BLUETOOTH:
1877                                 if (has_cap(ACER_CAP_WIRELESS))
1878                                         rfkill_set_sw_state(wireless_rfkill,
1879                                                 !(device_state & ACER_WMID3_GDS_WIRELESS));
1880                                 if (has_cap(ACER_CAP_THREEG))
1881                                         rfkill_set_sw_state(threeg_rfkill,
1882                                                 !(device_state & ACER_WMID3_GDS_THREEG));
1883                                 if (has_cap(ACER_CAP_BLUETOOTH))
1884                                         rfkill_set_sw_state(bluetooth_rfkill,
1885                                                 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1886                                 break;
1887                         case KEY_TOUCHPAD_TOGGLE:
1888                                 scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1889                                                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1890                         }
1891                         sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1892                 }
1893                 break;
1894         case WMID_ACCEL_OR_KBD_DOCK_EVENT:
1895                 acer_gsensor_event();
1896                 acer_kbd_dock_event(&return_value);
1897                 break;
1898         default:
1899                 pr_warn("Unknown function number - %d - %d\n",
1900                         return_value.function, return_value.key_num);
1901                 break;
1902         }
1903 }
1904
1905 static acpi_status __init
1906 wmid3_set_function_mode(struct func_input_params *params,
1907                         struct func_return_value *return_value)
1908 {
1909         acpi_status status;
1910         union acpi_object *obj;
1911
1912         struct acpi_buffer input = { sizeof(struct func_input_params), params };
1913         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1914
1915         status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1916         if (ACPI_FAILURE(status))
1917                 return status;
1918
1919         obj = output.pointer;
1920
1921         if (!obj)
1922                 return AE_ERROR;
1923         else if (obj->type != ACPI_TYPE_BUFFER) {
1924                 kfree(obj);
1925                 return AE_ERROR;
1926         }
1927         if (obj->buffer.length != 4) {
1928                 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1929                 kfree(obj);
1930                 return AE_ERROR;
1931         }
1932
1933         *return_value = *((struct func_return_value *)obj->buffer.pointer);
1934         kfree(obj);
1935
1936         return status;
1937 }
1938
1939 static int __init acer_wmi_enable_ec_raw(void)
1940 {
1941         struct func_return_value return_value;
1942         acpi_status status;
1943         struct func_input_params params = {
1944                 .function_num = 0x1,
1945                 .commun_devices = 0xFFFF,
1946                 .devices = 0xFFFF,
1947                 .app_status = 0x00,             /* Launch Manager Deactive */
1948                 .app_mask = 0x01,
1949         };
1950
1951         status = wmid3_set_function_mode(&params, &return_value);
1952
1953         if (return_value.error_code || return_value.ec_return_value)
1954                 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1955                         return_value.error_code,
1956                         return_value.ec_return_value);
1957         else
1958                 pr_info("Enabled EC raw mode\n");
1959
1960         return status;
1961 }
1962
1963 static int __init acer_wmi_enable_lm(void)
1964 {
1965         struct func_return_value return_value;
1966         acpi_status status;
1967         struct func_input_params params = {
1968                 .function_num = 0x1,
1969                 .commun_devices = 0xFFFF,
1970                 .devices = 0xFFFF,
1971                 .app_status = 0x01,            /* Launch Manager Active */
1972                 .app_mask = 0x01,
1973         };
1974
1975         status = wmid3_set_function_mode(&params, &return_value);
1976
1977         if (return_value.error_code || return_value.ec_return_value)
1978                 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1979                         return_value.error_code,
1980                         return_value.ec_return_value);
1981
1982         return status;
1983 }
1984
1985 static int __init acer_wmi_enable_rf_button(void)
1986 {
1987         struct func_return_value return_value;
1988         acpi_status status;
1989         struct func_input_params params = {
1990                 .function_num = 0x1,
1991                 .commun_devices = 0xFFFF,
1992                 .devices = 0xFFFF,
1993                 .app_status = 0x10,            /* RF Button Active */
1994                 .app_mask = 0x10,
1995         };
1996
1997         status = wmid3_set_function_mode(&params, &return_value);
1998
1999         if (return_value.error_code || return_value.ec_return_value)
2000                 pr_warn("Enabling RF Button failed: 0x%x - 0x%x\n",
2001                         return_value.error_code,
2002                         return_value.ec_return_value);
2003
2004         return status;
2005 }
2006
2007 #define ACER_WMID_ACCEL_HID     "BST0001"
2008
2009 static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level,
2010                                                 void *ctx, void **retval)
2011 {
2012         struct acpi_device *dev;
2013
2014         if (!strcmp(ctx, "SENR")) {
2015                 if (acpi_bus_get_device(ah, &dev))
2016                         return AE_OK;
2017                 if (strcmp(ACER_WMID_ACCEL_HID, acpi_device_hid(dev)))
2018                         return AE_OK;
2019         } else
2020                 return AE_OK;
2021
2022         *(acpi_handle *)retval = ah;
2023
2024         return AE_CTRL_TERMINATE;
2025 }
2026
2027 static int __init acer_wmi_get_handle(const char *name, const char *prop,
2028                                         acpi_handle *ah)
2029 {
2030         acpi_status status;
2031         acpi_handle handle;
2032
2033         BUG_ON(!name || !ah);
2034
2035         handle = NULL;
2036         status = acpi_get_devices(prop, acer_wmi_get_handle_cb,
2037                                         (void *)name, &handle);
2038         if (ACPI_SUCCESS(status) && handle) {
2039                 *ah = handle;
2040                 return 0;
2041         } else {
2042                 return -ENODEV;
2043         }
2044 }
2045
2046 static int __init acer_wmi_accel_setup(void)
2047 {
2048         int err;
2049
2050         err = acer_wmi_get_handle("SENR", ACER_WMID_ACCEL_HID, &gsensor_handle);
2051         if (err)
2052                 return err;
2053
2054         acer_wmi_accel_dev = input_allocate_device();
2055         if (!acer_wmi_accel_dev)
2056                 return -ENOMEM;
2057
2058         acer_wmi_accel_dev->open = acer_gsensor_open;
2059
2060         acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
2061         acer_wmi_accel_dev->phys = "wmi/input1";
2062         acer_wmi_accel_dev->id.bustype = BUS_HOST;
2063         acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
2064         input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
2065         input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
2066         input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
2067
2068         err = input_register_device(acer_wmi_accel_dev);
2069         if (err)
2070                 goto err_free_dev;
2071
2072         return 0;
2073
2074 err_free_dev:
2075         input_free_device(acer_wmi_accel_dev);
2076         return err;
2077 }
2078
2079 static int __init acer_wmi_input_setup(void)
2080 {
2081         acpi_status status;
2082         int err;
2083
2084         acer_wmi_input_dev = input_allocate_device();
2085         if (!acer_wmi_input_dev)
2086                 return -ENOMEM;
2087
2088         acer_wmi_input_dev->name = "Acer WMI hotkeys";
2089         acer_wmi_input_dev->phys = "wmi/input0";
2090         acer_wmi_input_dev->id.bustype = BUS_HOST;
2091
2092         err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
2093         if (err)
2094                 goto err_free_dev;
2095
2096         if (has_cap(ACER_CAP_KBD_DOCK))
2097                 input_set_capability(acer_wmi_input_dev, EV_SW, SW_TABLET_MODE);
2098
2099         status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
2100                                                 acer_wmi_notify, NULL);
2101         if (ACPI_FAILURE(status)) {
2102                 err = -EIO;
2103                 goto err_free_dev;
2104         }
2105
2106         if (has_cap(ACER_CAP_KBD_DOCK))
2107                 acer_kbd_dock_get_initial_state();
2108
2109         err = input_register_device(acer_wmi_input_dev);
2110         if (err)
2111                 goto err_uninstall_notifier;
2112
2113         return 0;
2114
2115 err_uninstall_notifier:
2116         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
2117 err_free_dev:
2118         input_free_device(acer_wmi_input_dev);
2119         return err;
2120 }
2121
2122 static void acer_wmi_input_destroy(void)
2123 {
2124         wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
2125         input_unregister_device(acer_wmi_input_dev);
2126 }
2127
2128 /*
2129  * debugfs functions
2130  */
2131 static u32 get_wmid_devices(void)
2132 {
2133         struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
2134         union acpi_object *obj;
2135         acpi_status status;
2136         u32 devices = 0;
2137
2138         status = wmi_query_block(WMID_GUID2, 0, &out);
2139         if (ACPI_FAILURE(status))
2140                 return 0;
2141
2142         obj = (union acpi_object *) out.pointer;
2143         if (obj) {
2144                 if (obj->type == ACPI_TYPE_BUFFER &&
2145                         (obj->buffer.length == sizeof(u32) ||
2146                         obj->buffer.length == sizeof(u64))) {
2147                         devices = *((u32 *) obj->buffer.pointer);
2148                 } else if (obj->type == ACPI_TYPE_INTEGER) {
2149                         devices = (u32) obj->integer.value;
2150                 }
2151         }
2152
2153         kfree(out.pointer);
2154         return devices;
2155 }
2156
2157 /*
2158  * Platform device
2159  */
2160 static int acer_platform_probe(struct platform_device *device)
2161 {
2162         int err;
2163
2164         if (has_cap(ACER_CAP_MAILLED)) {
2165                 err = acer_led_init(&device->dev);
2166                 if (err)
2167                         goto error_mailled;
2168         }
2169
2170         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2171                 err = acer_backlight_init(&device->dev);
2172                 if (err)
2173                         goto error_brightness;
2174         }
2175
2176         err = acer_rfkill_init(&device->dev);
2177         if (err)
2178                 goto error_rfkill;
2179
2180         return err;
2181
2182 error_rfkill:
2183         if (has_cap(ACER_CAP_BRIGHTNESS))
2184                 acer_backlight_exit();
2185 error_brightness:
2186         if (has_cap(ACER_CAP_MAILLED))
2187                 acer_led_exit();
2188 error_mailled:
2189         return err;
2190 }
2191
2192 static int acer_platform_remove(struct platform_device *device)
2193 {
2194         if (has_cap(ACER_CAP_MAILLED))
2195                 acer_led_exit();
2196         if (has_cap(ACER_CAP_BRIGHTNESS))
2197                 acer_backlight_exit();
2198
2199         acer_rfkill_exit();
2200         return 0;
2201 }
2202
2203 #ifdef CONFIG_PM_SLEEP
2204 static int acer_suspend(struct device *dev)
2205 {
2206         u32 value;
2207         struct acer_data *data = &interface->data;
2208
2209         if (!data)
2210                 return -ENOMEM;
2211
2212         if (has_cap(ACER_CAP_MAILLED)) {
2213                 get_u32(&value, ACER_CAP_MAILLED);
2214                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2215                 data->mailled = value;
2216         }
2217
2218         if (has_cap(ACER_CAP_BRIGHTNESS)) {
2219                 get_u32(&value, ACER_CAP_BRIGHTNESS);
2220                 data->brightness = value;
2221         }
2222
2223         return 0;
2224 }
2225
2226 static int acer_resume(struct device *dev)
2227 {
2228         struct acer_data *data = &interface->data;
2229
2230         if (!data)
2231                 return -ENOMEM;
2232
2233         if (has_cap(ACER_CAP_MAILLED))
2234                 set_u32(data->mailled, ACER_CAP_MAILLED);
2235
2236         if (has_cap(ACER_CAP_BRIGHTNESS))
2237                 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2238
2239         if (acer_wmi_accel_dev)
2240                 acer_gsensor_init();
2241
2242         return 0;
2243 }
2244 #else
2245 #define acer_suspend    NULL
2246 #define acer_resume     NULL
2247 #endif
2248
2249 static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2250
2251 static void acer_platform_shutdown(struct platform_device *device)
2252 {
2253         struct acer_data *data = &interface->data;
2254
2255         if (!data)
2256                 return;
2257
2258         if (has_cap(ACER_CAP_MAILLED))
2259                 set_u32(LED_OFF, ACER_CAP_MAILLED);
2260 }
2261
2262 static struct platform_driver acer_platform_driver = {
2263         .driver = {
2264                 .name = "acer-wmi",
2265                 .pm = &acer_pm,
2266         },
2267         .probe = acer_platform_probe,
2268         .remove = acer_platform_remove,
2269         .shutdown = acer_platform_shutdown,
2270 };
2271
2272 static struct platform_device *acer_platform_device;
2273
2274 static void remove_debugfs(void)
2275 {
2276         debugfs_remove(interface->debug.devices);
2277         debugfs_remove(interface->debug.root);
2278 }
2279
2280 static int __init create_debugfs(void)
2281 {
2282         interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2283         if (!interface->debug.root) {
2284                 pr_err("Failed to create debugfs directory");
2285                 return -ENOMEM;
2286         }
2287
2288         interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
2289                                         interface->debug.root,
2290                                         &interface->debug.wmid_devices);
2291         if (!interface->debug.devices)
2292                 goto error_debugfs;
2293
2294         return 0;
2295
2296 error_debugfs:
2297         remove_debugfs();
2298         return -ENOMEM;
2299 }
2300
2301 static int __init acer_wmi_init(void)
2302 {
2303         int err;
2304
2305         pr_info("Acer Laptop ACPI-WMI Extras\n");
2306
2307         if (dmi_check_system(acer_blacklist)) {
2308                 pr_info("Blacklisted hardware detected - not loading\n");
2309                 return -ENODEV;
2310         }
2311
2312         find_quirks();
2313
2314         /*
2315          * The AMW0_GUID1 wmi is not only found on Acer family but also other
2316          * machines like Lenovo, Fujitsu and Medion. In the past days,
2317          * acer-wmi driver handled those non-Acer machines by quirks list.
2318          * But actually acer-wmi driver was loaded on any machines that have
2319          * AMW0_GUID1. This behavior is strange because those machines should
2320          * be supported by appropriate wmi drivers. e.g. fujitsu-laptop,
2321          * ideapad-laptop. So, here checks the machine that has AMW0_GUID1
2322          * should be in Acer/Gateway/Packard Bell white list, or it's already
2323          * in the past quirk list.
2324          */
2325         if (wmi_has_guid(AMW0_GUID1) &&
2326             !dmi_check_system(amw0_whitelist) &&
2327             quirks == &quirk_unknown) {
2328                 pr_debug("Unsupported machine has AMW0_GUID1, unable to load\n");
2329                 return -ENODEV;
2330         }
2331
2332         /*
2333          * Detect which ACPI-WMI interface we're using.
2334          */
2335         if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2336                 interface = &AMW0_V2_interface;
2337
2338         if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2339                 interface = &wmid_interface;
2340
2341         if (wmi_has_guid(WMID_GUID3))
2342                 interface = &wmid_v2_interface;
2343
2344         if (interface)
2345                 dmi_walk(type_aa_dmi_decode, NULL);
2346
2347         if (wmi_has_guid(WMID_GUID2) && interface) {
2348                 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2349                         pr_err("Unable to detect available WMID devices\n");
2350                         return -ENODEV;
2351                 }
2352                 /* WMID always provides brightness methods */
2353                 interface->capability |= ACER_CAP_BRIGHTNESS;
2354         } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa && force_caps == -1) {
2355                 pr_err("No WMID device detection method found\n");
2356                 return -ENODEV;
2357         }
2358
2359         if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2360                 interface = &AMW0_interface;
2361
2362                 if (ACPI_FAILURE(AMW0_set_capabilities())) {
2363                         pr_err("Unable to detect available AMW0 devices\n");
2364                         return -ENODEV;
2365                 }
2366         }
2367
2368         if (wmi_has_guid(AMW0_GUID1))
2369                 AMW0_find_mailled();
2370
2371         if (!interface) {
2372                 pr_err("No or unsupported WMI interface, unable to load\n");
2373                 return -ENODEV;
2374         }
2375
2376         set_quirks();
2377
2378         if (dmi_check_system(video_vendor_dmi_table))
2379                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2380
2381         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2382                 interface->capability &= ~ACER_CAP_BRIGHTNESS;
2383
2384         if (wmi_has_guid(WMID_GUID3))
2385                 interface->capability |= ACER_CAP_SET_FUNCTION_MODE;
2386
2387         if (force_caps != -1)
2388                 interface->capability = force_caps;
2389
2390         if (wmi_has_guid(WMID_GUID3) &&
2391             (interface->capability & ACER_CAP_SET_FUNCTION_MODE)) {
2392                 if (ACPI_FAILURE(acer_wmi_enable_rf_button()))
2393                         pr_warn("Cannot enable RF Button Driver\n");
2394
2395                 if (ec_raw_mode) {
2396                         if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2397                                 pr_err("Cannot enable EC raw mode\n");
2398                                 return -ENODEV;
2399                         }
2400                 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2401                         pr_err("Cannot enable Launch Manager mode\n");
2402                         return -ENODEV;
2403                 }
2404         } else if (ec_raw_mode) {
2405                 pr_info("No WMID EC raw mode enable method\n");
2406         }
2407
2408         if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2409                 err = acer_wmi_input_setup();
2410                 if (err)
2411                         return err;
2412                 err = acer_wmi_accel_setup();
2413                 if (err && err != -ENODEV)
2414                         pr_warn("Cannot enable accelerometer\n");
2415         }
2416
2417         err = platform_driver_register(&acer_platform_driver);
2418         if (err) {
2419                 pr_err("Unable to register platform driver\n");
2420                 goto error_platform_register;
2421         }
2422
2423         acer_platform_device = platform_device_alloc("acer-wmi", -1);
2424         if (!acer_platform_device) {
2425                 err = -ENOMEM;
2426                 goto error_device_alloc;
2427         }
2428
2429         err = platform_device_add(acer_platform_device);
2430         if (err)
2431                 goto error_device_add;
2432
2433         if (wmi_has_guid(WMID_GUID2)) {
2434                 interface->debug.wmid_devices = get_wmid_devices();
2435                 err = create_debugfs();
2436                 if (err)
2437                         goto error_create_debugfs;
2438         }
2439
2440         /* Override any initial settings with values from the commandline */
2441         acer_commandline_init();
2442
2443         return 0;
2444
2445 error_create_debugfs:
2446         platform_device_del(acer_platform_device);
2447 error_device_add:
2448         platform_device_put(acer_platform_device);
2449 error_device_alloc:
2450         platform_driver_unregister(&acer_platform_driver);
2451 error_platform_register:
2452         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2453                 acer_wmi_input_destroy();
2454         if (acer_wmi_accel_dev)
2455                 input_unregister_device(acer_wmi_accel_dev);
2456
2457         return err;
2458 }
2459
2460 static void __exit acer_wmi_exit(void)
2461 {
2462         if (wmi_has_guid(ACERWMID_EVENT_GUID))
2463                 acer_wmi_input_destroy();
2464
2465         if (acer_wmi_accel_dev)
2466                 input_unregister_device(acer_wmi_accel_dev);
2467
2468         remove_debugfs();
2469         platform_device_unregister(acer_platform_device);
2470         platform_driver_unregister(&acer_platform_driver);
2471
2472         pr_info("Acer Laptop WMI Extras unloaded\n");
2473         return;
2474 }
2475
2476 module_init(acer_wmi_init);
2477 module_exit(acer_wmi_exit);