linux/hid.h

   1 /*
   2  *  Copyright (c) 1999 Andreas Gal
   3  *  Copyright (c) 2000-2001 Vojtech Pavlik
   4  *  Copyright (c) 2006-2007 Jiri Kosina
   5  */
   6 /*
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20  *
  21  * Should you need to contact me, the author, you can do so either by
  22  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  23  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  24  */
  25 #ifndef __HID_H
  26 #define __HID_H
  27
  28
  29 #include <linux/bitops.h>
  30 #include <linux/types.h>
  31 #include <linux/slab.h>
  32 #include <linux/list.h>
  33 #include <linux/mod_devicetable.h> /* hid_device_id */
  34 #include <linux/timer.h>
  35 #include <linux/workqueue.h>
  36 #include <linux/input.h>
  37 #include <linux/semaphore.h>
  38 #include <linux/mutex.h>
  39 #include <linux/power_supply.h>
  40 #include <uapi/linux/hid.h>
  41
  42 /*
  43  * We parse each description item into this structure. Short items data
  44  * values are expanded to 32-bit signed int, long items contain a pointer
  45  * into the data area.
  46  */
  47
  48 struct hid_item {
  49         unsigned  format;
  50         __u8      size;
  51         __u8      type;
  52         __u8      tag;
  53         union {
  54             __u8   u8;
  55             __s8   s8;
  56             __u16  u16;
  57             __s16  s16;
  58             __u32  u32;
  59             __s32  s32;
  60             __u8  *longdata;
  61         } data;
  62 };
  63
  64 /*
  65  * HID report item format
  66  */
  67
  68 #define HID_ITEM_FORMAT_SHORT   0
  69 #define HID_ITEM_FORMAT_LONG    1
  70
  71 /*
  72  * Special tag indicating long items
  73  */
  74
  75 #define HID_ITEM_TAG_LONG       15
  76
  77 /*
  78  * HID report descriptor item type (prefix bit 2,3)
  79  */
  80
  81 #define HID_ITEM_TYPE_MAIN              0
  82 #define HID_ITEM_TYPE_GLOBAL            1
  83 #define HID_ITEM_TYPE_LOCAL             2
  84 #define HID_ITEM_TYPE_RESERVED          3
  85
  86 /*
  87  * HID report descriptor main item tags
  88  */
  89
  90 #define HID_MAIN_ITEM_TAG_INPUT                 8
  91 #define HID_MAIN_ITEM_TAG_OUTPUT                9
  92 #define HID_MAIN_ITEM_TAG_FEATURE               11
  93 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION      10
  94 #define HID_MAIN_ITEM_TAG_END_COLLECTION        12
  95
  96 /*
  97  * HID report descriptor main item contents
  98  */
  99
 100 #define HID_MAIN_ITEM_CONSTANT          0x001
 101 #define HID_MAIN_ITEM_VARIABLE          0x002
 102 #define HID_MAIN_ITEM_RELATIVE          0x004
 103 #define HID_MAIN_ITEM_WRAP              0x008
 104 #define HID_MAIN_ITEM_NONLINEAR         0x010
 105 #define HID_MAIN_ITEM_NO_PREFERRED      0x020
 106 #define HID_MAIN_ITEM_NULL_STATE        0x040
 107 #define HID_MAIN_ITEM_VOLATILE          0x080
 108 #define HID_MAIN_ITEM_BUFFERED_BYTE     0x100
 109
 110 /*
 111  * HID report descriptor collection item types
 112  */
 113
 114 #define HID_COLLECTION_PHYSICAL         0
 115 #define HID_COLLECTION_APPLICATION      1
 116 #define HID_COLLECTION_LOGICAL          2
 117
 118 /*
 119  * HID report descriptor global item tags
 120  */
 121
 122 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE          0
 123 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM     1
 124 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM     2
 125 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM    3
 126 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM    4
 127 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT       5
 128 #define HID_GLOBAL_ITEM_TAG_UNIT                6
 129 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE         7
 130 #define HID_GLOBAL_ITEM_TAG_REPORT_ID           8
 131 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT        9
 132 #define HID_GLOBAL_ITEM_TAG_PUSH                10
 133 #define HID_GLOBAL_ITEM_TAG_POP                 11
 134
 135 /*
 136  * HID report descriptor local item tags
 137  */
 138
 139 #define HID_LOCAL_ITEM_TAG_USAGE                0
 140 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM        1
 141 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM        2
 142 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX     3
 143 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM   4
 144 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM   5
 145 #define HID_LOCAL_ITEM_TAG_STRING_INDEX         7
 146 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM       8
 147 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM       9
 148 #define HID_LOCAL_ITEM_TAG_DELIMITER            10
 149
 150 /*
 151  * HID usage tables
 152  */
 153
 154 #define HID_USAGE_PAGE          0xffff0000
 155
 156 #define HID_UP_UNDEFINED        0x00000000
 157 #define HID_UP_GENDESK          0x00010000
 158 #define HID_UP_SIMULATION       0x00020000
 159 #define HID_UP_GENDEVCTRLS      0x00060000
 160 #define HID_UP_KEYBOARD         0x00070000
 161 #define HID_UP_LED              0x00080000
 162 #define HID_UP_BUTTON           0x00090000
 163 #define HID_UP_ORDINAL          0x000a0000
 164 #define HID_UP_TELEPHONY        0x000b0000
 165 #define HID_UP_CONSUMER         0x000c0000
 166 #define HID_UP_DIGITIZER        0x000d0000
 167 #define HID_UP_PID              0x000f0000
 168 #define HID_UP_HPVENDOR         0xff7f0000
 169 #define HID_UP_HPVENDOR2        0xff010000
 170 #define HID_UP_MSVENDOR         0xff000000
 171 #define HID_UP_CUSTOM           0x00ff0000
 172 #define HID_UP_LOGIVENDOR       0xffbc0000
 173 #define HID_UP_LOGIVENDOR2   0xff090000
 174 #define HID_UP_LOGIVENDOR3   0xff430000
 175 #define HID_UP_LNVENDOR         0xffa00000
 176 #define HID_UP_SENSOR           0x00200000
 177 #define HID_UP_ASUSVENDOR       0xff310000
 178
 179 #define HID_USAGE               0x0000ffff
 180
 181 #define HID_GD_POINTER          0x00010001
 182 #define HID_GD_MOUSE            0x00010002
 183 #define HID_GD_JOYSTICK         0x00010004
 184 #define HID_GD_GAMEPAD          0x00010005
 185 #define HID_GD_KEYBOARD         0x00010006
 186 #define HID_GD_KEYPAD           0x00010007
 187 #define HID_GD_MULTIAXIS        0x00010008
 188 /*
 189  * Microsoft Win8 Wireless Radio Controls extensions CA, see:
 190  * http://www.usb.org/developers/hidpage/HUTRR40RadioHIDUsagesFinal.pdf
 191  */
 192 #define HID_GD_WIRELESS_RADIO_CTLS      0x0001000c
 193 /*
 194  * System Multi-Axis, see:
 195  * http://www.usb.org/developers/hidpage/HUTRR62_-_Generic_Desktop_CA_for_System_Multi-Axis_Controllers.txt
 196  */
 197 #define HID_GD_SYSTEM_MULTIAXIS 0x0001000e
 198
 199 #define HID_GD_X                0x00010030
 200 #define HID_GD_Y                0x00010031
 201 #define HID_GD_Z                0x00010032
 202 #define HID_GD_RX               0x00010033
 203 #define HID_GD_RY               0x00010034
 204 #define HID_GD_RZ               0x00010035
 205 #define HID_GD_SLIDER           0x00010036
 206 #define HID_GD_DIAL             0x00010037
 207 #define HID_GD_WHEEL            0x00010038
 208 #define HID_GD_HATSWITCH        0x00010039
 209 #define HID_GD_BUFFER           0x0001003a
 210 #define HID_GD_BYTECOUNT        0x0001003b
 211 #define HID_GD_MOTION           0x0001003c
 212 #define HID_GD_START            0x0001003d
 213 #define HID_GD_SELECT           0x0001003e
 214 #define HID_GD_VX               0x00010040
 215 #define HID_GD_VY               0x00010041
 216 #define HID_GD_VZ               0x00010042
 217 #define HID_GD_VBRX             0x00010043
 218 #define HID_GD_VBRY             0x00010044
 219 #define HID_GD_VBRZ             0x00010045
 220 #define HID_GD_VNO              0x00010046
 221 #define HID_GD_FEATURE          0x00010047
 222 #define HID_GD_SYSTEM_CONTROL   0x00010080
 223 #define HID_GD_UP               0x00010090
 224 #define HID_GD_DOWN             0x00010091
 225 #define HID_GD_RIGHT            0x00010092
 226 #define HID_GD_LEFT             0x00010093
 227 /* Microsoft Win8 Wireless Radio Controls CA usage codes */
 228 #define HID_GD_RFKILL_BTN       0x000100c6
 229 #define HID_GD_RFKILL_LED       0x000100c7
 230 #define HID_GD_RFKILL_SWITCH    0x000100c8
 231
 232 #define HID_DC_BATTERYSTRENGTH  0x00060020
 233
 234 #define HID_CP_CONSUMER_CONTROL 0x000c0001
 235
 236 #define HID_DG_DIGITIZER        0x000d0001
 237 #define HID_DG_PEN              0x000d0002
 238 #define HID_DG_LIGHTPEN         0x000d0003
 239 #define HID_DG_TOUCHSCREEN      0x000d0004
 240 #define HID_DG_TOUCHPAD         0x000d0005
 241 #define HID_DG_STYLUS           0x000d0020
 242 #define HID_DG_PUCK             0x000d0021
 243 #define HID_DG_FINGER           0x000d0022
 244 #define HID_DG_TIPPRESSURE      0x000d0030
 245 #define HID_DG_BARRELPRESSURE   0x000d0031
 246 #define HID_DG_INRANGE          0x000d0032
 247 #define HID_DG_TOUCH            0x000d0033
 248 #define HID_DG_UNTOUCH          0x000d0034
 249 #define HID_DG_TAP              0x000d0035
 250 #define HID_DG_TABLETFUNCTIONKEY        0x000d0039
 251 #define HID_DG_PROGRAMCHANGEKEY 0x000d003a
 252 #define HID_DG_BATTERYSTRENGTH  0x000d003b
 253 #define HID_DG_INVERT           0x000d003c
 254 #define HID_DG_TILT_X           0x000d003d
 255 #define HID_DG_TILT_Y           0x000d003e
 256 #define HID_DG_TWIST            0x000d0041
 257 #define HID_DG_TIPSWITCH        0x000d0042
 258 #define HID_DG_TIPSWITCH2       0x000d0043
 259 #define HID_DG_BARRELSWITCH     0x000d0044
 260 #define HID_DG_ERASER           0x000d0045
 261 #define HID_DG_TABLETPICK       0x000d0046
 262
 263 #define HID_CP_CONSUMERCONTROL  0x000c0001
 264 #define HID_CP_NUMERICKEYPAD    0x000c0002
 265 #define HID_CP_PROGRAMMABLEBUTTONS      0x000c0003
 266 #define HID_CP_MICROPHONE       0x000c0004
 267 #define HID_CP_HEADPHONE        0x000c0005
 268 #define HID_CP_GRAPHICEQUALIZER 0x000c0006
 269 #define HID_CP_FUNCTIONBUTTONS  0x000c0036
 270 #define HID_CP_SELECTION        0x000c0080
 271 #define HID_CP_MEDIASELECTION   0x000c0087
 272 #define HID_CP_SELECTDISC       0x000c00ba
 273 #define HID_CP_VOLUMEUP         0x000c00e9
 274 #define HID_CP_VOLUMEDOWN       0x000c00ea
 275 #define HID_CP_PLAYBACKSPEED    0x000c00f1
 276 #define HID_CP_PROXIMITY        0x000c0109
 277 #define HID_CP_SPEAKERSYSTEM    0x000c0160
 278 #define HID_CP_CHANNELLEFT      0x000c0161
 279 #define HID_CP_CHANNELRIGHT     0x000c0162
 280 #define HID_CP_CHANNELCENTER    0x000c0163
 281 #define HID_CP_CHANNELFRONT     0x000c0164
 282 #define HID_CP_CHANNELCENTERFRONT       0x000c0165
 283 #define HID_CP_CHANNELSIDE      0x000c0166
 284 #define HID_CP_CHANNELSURROUND  0x000c0167
 285 #define HID_CP_CHANNELLOWFREQUENCYENHANCEMENT   0x000c0168
 286 #define HID_CP_CHANNELTOP       0x000c0169
 287 #define HID_CP_CHANNELUNKNOWN   0x000c016a
 288 #define HID_CP_APPLICATIONLAUNCHBUTTONS 0x000c0180
 289 #define HID_CP_GENERICGUIAPPLICATIONCONTROLS    0x000c0200
 290
 291 #define HID_DG_DEVICECONFIG     0x000d000e
 292 #define HID_DG_DEVICESETTINGS   0x000d0023
 293 #define HID_DG_AZIMUTH          0x000d003f
 294 #define HID_DG_CONFIDENCE       0x000d0047
 295 #define HID_DG_WIDTH            0x000d0048
 296 #define HID_DG_HEIGHT           0x000d0049
 297 #define HID_DG_CONTACTID        0x000d0051
 298 #define HID_DG_INPUTMODE        0x000d0052
 299 #define HID_DG_DEVICEINDEX      0x000d0053
 300 #define HID_DG_CONTACTCOUNT     0x000d0054
 301 #define HID_DG_CONTACTMAX       0x000d0055
 302 #define HID_DG_SCANTIME         0x000d0056
 303 #define HID_DG_SURFACESWITCH    0x000d0057
 304 #define HID_DG_BUTTONSWITCH     0x000d0058
 305 #define HID_DG_BUTTONTYPE       0x000d0059
 306 #define HID_DG_BARRELSWITCH2    0x000d005a
 307 #define HID_DG_TOOLSERIALNUMBER 0x000d005b
 308 #define HID_DG_LATENCYMODE      0x000d0060
 309
 310 #define HID_VD_ASUS_CUSTOM_MEDIA_KEYS   0xff310076
 311 /*
 312  * HID report types --- Ouch! HID spec says 1 2 3!
 313  */
 314
 315 #define HID_INPUT_REPORT        0
 316 #define HID_OUTPUT_REPORT       1
 317 #define HID_FEATURE_REPORT      2
 318
 319 #define HID_REPORT_TYPES        3
 320
 321 /*
 322  * HID connect requests
 323  */
 324
 325 #define HID_CONNECT_HIDINPUT            BIT(0)
 326 #define HID_CONNECT_HIDINPUT_FORCE      BIT(1)
 327 #define HID_CONNECT_HIDRAW              BIT(2)
 328 #define HID_CONNECT_HIDDEV              BIT(3)
 329 #define HID_CONNECT_HIDDEV_FORCE        BIT(4)
 330 #define HID_CONNECT_FF                  BIT(5)
 331 #define HID_CONNECT_DRIVER              BIT(6)
 332 #define HID_CONNECT_DEFAULT     (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \
 333                 HID_CONNECT_HIDDEV|HID_CONNECT_FF)
 334
 335 /*
 336  * HID device quirks.
 337  */
 338
 339 /*
 340  * Increase this if you need to configure more HID quirks at module load time
 341  */
 342 #define MAX_USBHID_BOOT_QUIRKS 4
 343
 344 #define HID_QUIRK_INVERT                        BIT(0)
 345 #define HID_QUIRK_NOTOUCH                       BIT(1)
 346 #define HID_QUIRK_IGNORE                        BIT(2)
 347 #define HID_QUIRK_NOGET                         BIT(3)
 348 #define HID_QUIRK_HIDDEV_FORCE                  BIT(4)
 349 #define HID_QUIRK_BADPAD                        BIT(5)
 350 #define HID_QUIRK_MULTI_INPUT                   BIT(6)
 351 #define HID_QUIRK_HIDINPUT_FORCE                BIT(7)
 352 /* BIT(8) reserved for backward compatibility, was HID_QUIRK_NO_EMPTY_INPUT */
 353 /* BIT(9) reserved for backward compatibility, was NO_INIT_INPUT_REPORTS */
 354 #define HID_QUIRK_ALWAYS_POLL                   BIT(10)
 355 #define HID_QUIRK_INPUT_PER_APP                 BIT(11)
 356 #define HID_QUIRK_SKIP_OUTPUT_REPORTS           BIT(16)
 357 #define HID_QUIRK_SKIP_OUTPUT_REPORT_ID         BIT(17)
 358 #define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP  BIT(18)
 359 #define HID_QUIRK_HAVE_SPECIAL_DRIVER           BIT(19)
 360 #define HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE  BIT(20)
 361 #define HID_QUIRK_FULLSPEED_INTERVAL            BIT(28)
 362 #define HID_QUIRK_NO_INIT_REPORTS               BIT(29)
 363 #define HID_QUIRK_NO_IGNORE                     BIT(30)
 364 #define HID_QUIRK_NO_INPUT_SYNC                 BIT(31)
 365
 366 /*
 367  * HID device groups
 368  *
 369  * Note: HID_GROUP_ANY is declared in linux/mod_devicetable.h
 370  * and has a value of 0x0000
 371  */
 372 #define HID_GROUP_GENERIC                       0x0001
 373 #define HID_GROUP_MULTITOUCH                    0x0002
 374 #define HID_GROUP_SENSOR_HUB                    0x0003
 375 #define HID_GROUP_MULTITOUCH_WIN_8              0x0004
 376
 377 /*
 378  * Vendor specific HID device groups
 379  */
 380 #define HID_GROUP_RMI                           0x0100
 381 #define HID_GROUP_WACOM                         0x0101
 382 #define HID_GROUP_LOGITECH_DJ_DEVICE            0x0102
 383 #define HID_GROUP_STEAM                         0x0103
 384
 385 /*
 386  * HID protocol status
 387  */
 388 #define HID_REPORT_PROTOCOL     1
 389 #define HID_BOOT_PROTOCOL       0
 390
 391 /*
 392  * This is the global environment of the parser. This information is
 393  * persistent for main-items. The global environment can be saved and
 394  * restored with PUSH/POP statements.
 395  */
 396
 397 struct hid_global {
 398         unsigned usage_page;
 399         __s32    logical_minimum;
 400         __s32    logical_maximum;
 401         __s32    physical_minimum;
 402         __s32    physical_maximum;
 403         __s32    unit_exponent;
 404         unsigned unit;
 405         unsigned report_id;
 406         unsigned report_size;
 407         unsigned report_count;
 408 };
 409
 410 /*
 411  * This is the local environment. It is persistent up the next main-item.
 412  */
 413
 414 #define HID_MAX_USAGES                  12288
 415 #define HID_DEFAULT_NUM_COLLECTIONS     16
 416
 417 struct hid_local {
 418         unsigned usage[HID_MAX_USAGES]; /* usage array */
 419         u8 usage_size[HID_MAX_USAGES]; /* usage size array */
 420         unsigned collection_index[HID_MAX_USAGES]; /* collection index array */
 421         unsigned usage_index;
 422         unsigned usage_minimum;
 423         unsigned delimiter_depth;
 424         unsigned delimiter_branch;
 425 };
 426
 427 /*
 428  * This is the collection stack. We climb up the stack to determine
 429  * application and function of each field.
 430  */
 431
 432 struct hid_collection {
 433         unsigned type;
 434         unsigned usage;
 435         unsigned level;
 436 };
 437
 438 struct hid_usage {
 439         unsigned  hid;                  /* hid usage code */
 440         unsigned  collection_index;     /* index into collection array */
 441         unsigned  usage_index;          /* index into usage array */
 442         /* hidinput data */
 443         __u16     code;                 /* input driver code */
 444         __u8      type;                 /* input driver type */
 445         __s8      hat_min;              /* hat switch fun */
 446         __s8      hat_max;              /* ditto */
 447         __s8      hat_dir;              /* ditto */
 448 };
 449
 450 struct hid_input;
 451
 452 struct hid_field {
 453         unsigned  physical;             /* physical usage for this field */
 454         unsigned  logical;              /* logical usage for this field */
 455         unsigned  application;          /* application usage for this field */
 456         struct hid_usage *usage;        /* usage table for this function */
 457         unsigned  maxusage;             /* maximum usage index */
 458         unsigned  flags;                /* main-item flags (i.e. volatile,array,constant) */
 459         unsigned  report_offset;        /* bit offset in the report */
 460         unsigned  report_size;          /* size of this field in the report */
 461         unsigned  report_count;         /* number of this field in the report */
 462         unsigned  report_type;          /* (input,output,feature) */
 463         __s32    *value;                /* last known value(s) */
 464         __s32     logical_minimum;
 465         __s32     logical_maximum;
 466         __s32     physical_minimum;
 467         __s32     physical_maximum;
 468         __s32     unit_exponent;
 469         unsigned  unit;
 470         struct hid_report *report;      /* associated report */
 471         unsigned index;                 /* index into report->field[] */
 472         /* hidinput data */
 473         struct hid_input *hidinput;     /* associated input structure */
 474         __u16 dpad;                     /* dpad input code */
 475 };
 476
 477 #define HID_MAX_FIELDS 256
 478
 479 struct hid_report {
 480         struct list_head list;
 481         struct list_head hidinput_list;
 482         unsigned int id;                                /* id of this report */
 483         unsigned int type;                              /* report type */
 484         unsigned int application;                       /* application usage for this report */
 485         struct hid_field *field[HID_MAX_FIELDS];        /* fields of the report */
 486         unsigned maxfield;                              /* maximum valid field index */
 487         unsigned size;                                  /* size of the report (bits) */
 488         struct hid_device *device;                      /* associated device */
 489 };
 490
 491 #define HID_MAX_IDS 256
 492
 493 struct hid_report_enum {
 494         unsigned numbered;
 495         struct list_head report_list;
 496         struct hid_report *report_id_hash[HID_MAX_IDS];
 497 };
 498
 499 #define HID_MIN_BUFFER_SIZE     64              /* make sure there is at least a packet size of space */
 500 #define HID_MAX_BUFFER_SIZE     8192            /* 8kb */
 501 #define HID_CONTROL_FIFO_SIZE   256             /* to init devices with >100 reports */
 502 #define HID_OUTPUT_FIFO_SIZE    64
 503
 504 struct hid_control_fifo {
 505         unsigned char dir;
 506         struct hid_report *report;
 507         char *raw_report;
 508 };
 509
 510 struct hid_output_fifo {
 511         struct hid_report *report;
 512         char *raw_report;
 513 };
 514
 515 #define HID_CLAIMED_INPUT       BIT(0)
 516 #define HID_CLAIMED_HIDDEV      BIT(1)
 517 #define HID_CLAIMED_HIDRAW      BIT(2)
 518 #define HID_CLAIMED_DRIVER      BIT(3)
 519
 520 #define HID_STAT_ADDED          BIT(0)
 521 #define HID_STAT_PARSED         BIT(1)
 522 #define HID_STAT_DUP_DETECTED   BIT(2)
 523 #define HID_STAT_REPROBED       BIT(3)
 524
 525 struct hid_input {
 526         struct list_head list;
 527         struct hid_report *report;
 528         struct input_dev *input;
 529         const char *name;
 530         bool registered;
 531         struct list_head reports;       /* the list of reports */
 532         unsigned int application;       /* application usage for this input */
 533 };
 534
 535 enum hid_type {
 536         HID_TYPE_OTHER = 0,
 537         HID_TYPE_USBMOUSE,
 538         HID_TYPE_USBNONE
 539 };
 540
 541 enum hid_battery_status {
 542         HID_BATTERY_UNKNOWN = 0,
 543         HID_BATTERY_QUERIED,            /* Kernel explicitly queried battery strength */
 544         HID_BATTERY_REPORTED,           /* Device sent unsolicited battery strength report */
 545 };
 546
 547 struct hid_driver;
 548 struct hid_ll_driver;
 549
 550 struct hid_device {                                                     /* device report descriptor */
 551         __u8 *dev_rdesc;
 552         unsigned dev_rsize;
 553         __u8 *rdesc;
 554         unsigned rsize;
 555         struct hid_collection *collection;                              /* List of HID collections */
 556         unsigned collection_size;                                       /* Number of allocated hid_collections */
 557         unsigned maxcollection;                                         /* Number of parsed collections */
 558         unsigned maxapplication;                                        /* Number of applications */
 559         __u16 bus;                                                      /* BUS ID */
 560         __u16 group;                                                    /* Report group */
 561         __u32 vendor;                                                   /* Vendor ID */
 562         __u32 product;                                                  /* Product ID */
 563         __u32 version;                                                  /* HID version */
 564         enum hid_type type;                                             /* device type (mouse, kbd, ...) */
 565         unsigned country;                                               /* HID country */
 566         struct hid_report_enum report_enum[HID_REPORT_TYPES];
 567         struct work_struct led_work;                                    /* delayed LED worker */
 568
 569         struct semaphore driver_input_lock;                             /* protects the current driver */
 570         struct device dev;                                              /* device */
 571         struct hid_driver *driver;
 572
 573         struct hid_ll_driver *ll_driver;
 574         struct mutex ll_open_lock;
 575         unsigned int ll_open_count;
 576
 577 #ifdef CONFIG_HID_BATTERY_STRENGTH
 578         /*
 579          * Power supply information for HID devices which report
 580          * battery strength. power_supply was successfully registered if
 581          * battery is non-NULL.
 582          */
 583         struct power_supply *battery;
 584         __s32 battery_capacity;
 585         __s32 battery_min;
 586         __s32 battery_max;
 587         __s32 battery_report_type;
 588         __s32 battery_report_id;
 589         enum hid_battery_status battery_status;
 590         bool battery_avoid_query;
 591 #endif
 592
 593         unsigned long status;                                           /* see STAT flags above */
 594         unsigned claimed;                                               /* Claimed by hidinput, hiddev? */
 595         unsigned quirks;                                                /* Various quirks the device can pull on us */
 596         bool io_started;                                                /* If IO has started */
 597
 598         struct list_head inputs;                                        /* The list of inputs */
 599         void *hiddev;                                                   /* The hiddev structure */
 600         void *hidraw;
 601
 602         char name[128];                                                 /* Device name */
 603         char phys[64];                                                  /* Device physical location */
 604         char uniq[64];                                                  /* Device unique identifier (serial #) */
 605
 606         void *driver_data;
 607
 608         /* temporary hid_ff handling (until moved to the drivers) */
 609         int (*ff_init)(struct hid_device *);
 610
 611         /* hiddev event handler */
 612         int (*hiddev_connect)(struct hid_device *, unsigned int);
 613         void (*hiddev_disconnect)(struct hid_device *);
 614         void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field,
 615                                   struct hid_usage *, __s32);
 616         void (*hiddev_report_event) (struct hid_device *, struct hid_report *);
 617
 618         /* debugging support via debugfs */
 619         unsigned short debug;
 620         struct dentry *debug_dir;
 621         struct dentry *debug_rdesc;
 622         struct dentry *debug_events;
 623         struct list_head debug_list;
 624         spinlock_t  debug_list_lock;
 625         wait_queue_head_t debug_wait;
 626 };
 627
 628 #define to_hid_device(pdev) \
 629         container_of(pdev, struct hid_device, dev)
 630
 631 static inline void *hid_get_drvdata(struct hid_device *hdev)
 632 {
 633         return dev_get_drvdata(&hdev->dev);
 634 }
 635
 636 static inline void hid_set_drvdata(struct hid_device *hdev, void *data)
 637 {
 638         dev_set_drvdata(&hdev->dev, data);
 639 }
 640
 641 #define HID_GLOBAL_STACK_SIZE 4
 642 #define HID_COLLECTION_STACK_SIZE 4
 643
 644 #define HID_SCAN_FLAG_MT_WIN_8                  BIT(0)
 645 #define HID_SCAN_FLAG_VENDOR_SPECIFIC           BIT(1)
 646 #define HID_SCAN_FLAG_GD_POINTER                BIT(2)
 647
 648 struct hid_parser {
 649         struct hid_global     global;
 650         struct hid_global     global_stack[HID_GLOBAL_STACK_SIZE];
 651         unsigned int          global_stack_ptr;
 652         struct hid_local      local;
 653         unsigned int         *collection_stack;
 654         unsigned int          collection_stack_ptr;
 655         unsigned int          collection_stack_size;
 656         struct hid_device    *device;
 657         unsigned int          scan_flags;
 658 };
 659
 660 struct hid_class_descriptor {
 661         __u8  bDescriptorType;
 662         __le16 wDescriptorLength;
 663 } __attribute__ ((packed));
 664
 665 struct hid_descriptor {
 666         __u8  bLength;
 667         __u8  bDescriptorType;
 668         __le16 bcdHID;
 669         __u8  bCountryCode;
 670         __u8  bNumDescriptors;
 671
 672         struct hid_class_descriptor desc[1];
 673 } __attribute__ ((packed));
 674
 675 #define HID_DEVICE(b, g, ven, prod)                                     \
 676         .bus = (b), .group = (g), .vendor = (ven), .product = (prod)
 677 #define HID_USB_DEVICE(ven, prod)                               \
 678         .bus = BUS_USB, .vendor = (ven), .product = (prod)
 679 #define HID_BLUETOOTH_DEVICE(ven, prod)                                 \
 680         .bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod)
 681 #define HID_I2C_DEVICE(ven, prod)                               \
 682         .bus = BUS_I2C, .vendor = (ven), .product = (prod)
 683
 684 #define HID_REPORT_ID(rep) \
 685         .report_type = (rep)
 686 #define HID_USAGE_ID(uhid, utype, ucode) \
 687         .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode)
 688 /* we don't want to catch types and codes equal to 0 */
 689 #define HID_TERMINATOR          (HID_ANY_ID - 1)
 690
 691 struct hid_report_id {
 692         __u32 report_type;
 693 };
 694 struct hid_usage_id {
 695         __u32 usage_hid;
 696         __u32 usage_type;
 697         __u32 usage_code;
 698 };
 699
 700 /**
 701  * struct hid_driver
 702  * @name: driver name (e.g. "Footech_bar-wheel")
 703  * @id_table: which devices is this driver for (must be non-NULL for probe
 704  *            to be called)
 705  * @dyn_list: list of dynamically added device ids
 706  * @dyn_lock: lock protecting @dyn_list
 707  * @match: check if the given device is handled by this driver
 708  * @probe: new device inserted
 709  * @remove: device removed (NULL if not a hot-plug capable driver)
 710  * @report_table: on which reports to call raw_event (NULL means all)
 711  * @raw_event: if report in report_table, this hook is called (NULL means nop)
 712  * @usage_table: on which events to call event (NULL means all)
 713  * @event: if usage in usage_table, this hook is called (NULL means nop)
 714  * @report: this hook is called after parsing a report (NULL means nop)
 715  * @report_fixup: called before report descriptor parsing (NULL means nop)
 716  * @input_mapping: invoked on input registering before mapping an usage
 717  * @input_mapped: invoked on input registering after mapping an usage
 718  * @input_configured: invoked just before the device is registered
 719  * @feature_mapping: invoked on feature registering
 720  * @suspend: invoked on suspend (NULL means nop)
 721  * @resume: invoked on resume if device was not reset (NULL means nop)
 722  * @reset_resume: invoked on resume if device was reset (NULL means nop)
 723  *
 724  * probe should return -errno on error, or 0 on success. During probe,
 725  * input will not be passed to raw_event unless hid_device_io_start is
 726  * called.
 727  *
 728  * raw_event and event should return 0 on no action performed, 1 when no
 729  * further processing should be done and negative on error
 730  *
 731  * input_mapping shall return a negative value to completely ignore this usage
 732  * (e.g. doubled or invalid usage), zero to continue with parsing of this
 733  * usage by generic code (no special handling needed) or positive to skip
 734  * generic parsing (needed special handling which was done in the hook already)
 735  * input_mapped shall return negative to inform the layer that this usage
 736  * should not be considered for further processing or zero to notify that
 737  * no processing was performed and should be done in a generic manner
 738  * Both these functions may be NULL which means the same behavior as returning
 739  * zero from them.
 740  */
 741 struct hid_driver {
 742         char *name;
 743         const struct hid_device_id *id_table;
 744
 745         struct list_head dyn_list;
 746         spinlock_t dyn_lock;
 747
 748         bool (*match)(struct hid_device *dev, bool ignore_special_driver);
 749         int (*probe)(struct hid_device *dev, const struct hid_device_id *id);
 750         void (*remove)(struct hid_device *dev);
 751
 752         const struct hid_report_id *report_table;
 753         int (*raw_event)(struct hid_device *hdev, struct hid_report *report,
 754                         u8 *data, int size);
 755         const struct hid_usage_id *usage_table;
 756         int (*event)(struct hid_device *hdev, struct hid_field *field,
 757                         struct hid_usage *usage, __s32 value);
 758         void (*report)(struct hid_device *hdev, struct hid_report *report);
 759
 760         __u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf,
 761                         unsigned int *size);
 762
 763         int (*input_mapping)(struct hid_device *hdev,
 764                         struct hid_input *hidinput, struct hid_field *field,
 765                         struct hid_usage *usage, unsigned long **bit, int *max);
 766         int (*input_mapped)(struct hid_device *hdev,
 767                         struct hid_input *hidinput, struct hid_field *field,
 768                         struct hid_usage *usage, unsigned long **bit, int *max);
 769         int (*input_configured)(struct hid_device *hdev,
 770                                 struct hid_input *hidinput);
 771         void (*feature_mapping)(struct hid_device *hdev,
 772                         struct hid_field *field,
 773                         struct hid_usage *usage);
 774 #ifdef CONFIG_PM
 775         int (*suspend)(struct hid_device *hdev, pm_message_t message);
 776         int (*resume)(struct hid_device *hdev);
 777         int (*reset_resume)(struct hid_device *hdev);
 778 #endif
 779 /* private: */
 780         struct device_driver driver;
 781 };
 782
 783 #define to_hid_driver(pdrv) \
 784         container_of(pdrv, struct hid_driver, driver)
 785
 786 /**
 787  * hid_ll_driver - low level driver callbacks
 788  * @start: called on probe to start the device
 789  * @stop: called on remove
 790  * @open: called by input layer on open
 791  * @close: called by input layer on close
 792  * @power: request underlying hardware to enter requested power mode
 793  * @parse: this method is called only once to parse the device data,
 794  *         shouldn't allocate anything to not leak memory
 795  * @request: send report request to device (e.g. feature report)
 796  * @wait: wait for buffered io to complete (send/recv reports)
 797  * @raw_request: send raw report request to device (e.g. feature report)
 798  * @output_report: send output report to device
 799  * @idle: send idle request to device
 800  */
 801 struct hid_ll_driver {
 802         int (*start)(struct hid_device *hdev);
 803         void (*stop)(struct hid_device *hdev);
 804
 805         int (*open)(struct hid_device *hdev);
 806         void (*close)(struct hid_device *hdev);
 807
 808         int (*power)(struct hid_device *hdev, int level);
 809
 810         int (*parse)(struct hid_device *hdev);
 811
 812         void (*request)(struct hid_device *hdev,
 813                         struct hid_report *report, int reqtype);
 814
 815         int (*wait)(struct hid_device *hdev);
 816
 817         int (*raw_request) (struct hid_device *hdev, unsigned char reportnum,
 818                             __u8 *buf, size_t len, unsigned char rtype,
 819                             int reqtype);
 820
 821         int (*output_report) (struct hid_device *hdev, __u8 *buf, size_t len);
 822
 823         int (*idle)(struct hid_device *hdev, int report, int idle, int reqtype);
 824 };
 825
 826 extern struct hid_ll_driver i2c_hid_ll_driver;
 827 extern struct hid_ll_driver hidp_hid_driver;
 828 extern struct hid_ll_driver uhid_hid_driver;
 829 extern struct hid_ll_driver usb_hid_driver;
 830
 831 static inline bool hid_is_using_ll_driver(struct hid_device *hdev,
 832                 struct hid_ll_driver *driver)
 833 {
 834         return hdev->ll_driver == driver;
 835 }
 836
 837 #define PM_HINT_FULLON  1<<5
 838 #define PM_HINT_NORMAL  1<<1
 839
 840 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */
 841 /* We ignore a few input applications that are not widely used */
 842 #define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001) || ((a >= 0x000d0002) && (a <= 0x000d0006)))
 843
 844 /* HID core API */
 845
 846 extern int hid_debug;
 847
 848 extern bool hid_ignore(struct hid_device *);
 849 extern int hid_add_device(struct hid_device *);
 850 extern void hid_destroy_device(struct hid_device *);
 851
 852 extern struct bus_type hid_bus_type;
 853
 854 extern int __must_check __hid_register_driver(struct hid_driver *,
 855                 struct module *, const char *mod_name);
 856
 857 /* use a define to avoid include chaining to get THIS_MODULE & friends */
 858 #define hid_register_driver(driver) \
 859         __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
 860
 861 extern void hid_unregister_driver(struct hid_driver *);
 862
 863 /**
 864  * module_hid_driver() - Helper macro for registering a HID driver
 865  * @__hid_driver: hid_driver struct
 866  *
 867  * Helper macro for HID drivers which do not do anything special in module
 868  * init/exit. This eliminates a lot of boilerplate. Each module may only
 869  * use this macro once, and calling it replaces module_init() and module_exit()
 870  */
 871 #define module_hid_driver(__hid_driver) \
 872         module_driver(__hid_driver, hid_register_driver, \
 873                       hid_unregister_driver)
 874
 875 extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
 876 extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report);
 877 extern int hidinput_connect(struct hid_device *hid, unsigned int force);
 878 extern void hidinput_disconnect(struct hid_device *);
 879
 880 int hid_set_field(struct hid_field *, unsigned, __s32);
 881 int hid_input_report(struct hid_device *, int type, u8 *, u32, int);
 882 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
 883 struct hid_field *hidinput_get_led_field(struct hid_device *hid);
 884 unsigned int hidinput_count_leds(struct hid_device *hid);
 885 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code);
 886 void hid_output_report(struct hid_report *report, __u8 *data);
 887 void __hid_request(struct hid_device *hid, struct hid_report *rep, int reqtype);
 888 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags);
 889 struct hid_device *hid_allocate_device(void);
 890 struct hid_report *hid_register_report(struct hid_device *device,
 891                                        unsigned int type, unsigned int id,
 892                                        unsigned int application);
 893 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size);
 894 struct hid_report *hid_validate_values(struct hid_device *hid,
 895                                        unsigned int type, unsigned int id,
 896                                        unsigned int field_index,
 897                                        unsigned int report_counts);
 898 int hid_open_report(struct hid_device *device);
 899 int hid_check_keys_pressed(struct hid_device *hid);
 900 int hid_connect(struct hid_device *hid, unsigned int connect_mask);
 901 void hid_disconnect(struct hid_device *hid);
 902 bool hid_match_one_id(const struct hid_device *hdev,
 903                       const struct hid_device_id *id);
 904 const struct hid_device_id *hid_match_id(const struct hid_device *hdev,
 905                                          const struct hid_device_id *id);
 906 const struct hid_device_id *hid_match_device(struct hid_device *hdev,
 907                                              struct hid_driver *hdrv);
 908 bool hid_compare_device_paths(struct hid_device *hdev_a,
 909                               struct hid_device *hdev_b, char separator);
 910 s32 hid_snto32(__u32 value, unsigned n);
 911 __u32 hid_field_extract(const struct hid_device *hid, __u8 *report,
 912                      unsigned offset, unsigned n);
 913
 914 /**
 915  * hid_device_io_start - enable HID input during probe, remove
 916  *
 917  * @hid - the device
 918  *
 919  * This should only be called during probe or remove and only be
 920  * called by the thread calling probe or remove. It will allow
 921  * incoming packets to be delivered to the driver.
 922  */
 923 static inline void hid_device_io_start(struct hid_device *hid) {
 924         if (hid->io_started) {
 925                 dev_warn(&hid->dev, "io already started\n");
 926                 return;
 927         }
 928         hid->io_started = true;
 929         up(&hid->driver_input_lock);
 930 }
 931
 932 /**
 933  * hid_device_io_stop - disable HID input during probe, remove
 934  *
 935  * @hid - the device
 936  *
 937  * Should only be called after hid_device_io_start. It will prevent
 938  * incoming packets from going to the driver for the duration of
 939  * probe, remove. If called during probe, packets will still go to the
 940  * driver after probe is complete. This function should only be called
 941  * by the thread calling probe or remove.
 942  */
 943 static inline void hid_device_io_stop(struct hid_device *hid) {
 944         if (!hid->io_started) {
 945                 dev_warn(&hid->dev, "io already stopped\n");
 946                 return;
 947         }
 948         hid->io_started = false;
 949         down(&hid->driver_input_lock);
 950 }
 951
 952 /**
 953  * hid_map_usage - map usage input bits
 954  *
 955  * @hidinput: hidinput which we are interested in
 956  * @usage: usage to fill in
 957  * @bit: pointer to input->{}bit (out parameter)
 958  * @max: maximal valid usage->code to consider later (out parameter)
 959  * @type: input event type (EV_KEY, EV_REL, ...)
 960  * @c: code which corresponds to this usage and type
 961  *
 962  * The value pointed to by @bit will be set to NULL if either @type is
 963  * an unhandled event type, or if @c is out of range for @type. This
 964  * can be used as an error condition.
 965  */
 966 static inline void hid_map_usage(struct hid_input *hidinput,
 967                 struct hid_usage *usage, unsigned long **bit, int *max,
 968                 __u8 type, unsigned int c)
 969 {
 970         struct input_dev *input = hidinput->input;
 971         unsigned long *bmap = NULL;
 972         unsigned int limit = 0;
 973
 974         switch (type) {
 975         case EV_ABS:
 976                 bmap = input->absbit;
 977                 limit = ABS_MAX;
 978                 break;
 979         case EV_REL:
 980                 bmap = input->relbit;
 981                 limit = REL_MAX;
 982                 break;
 983         case EV_KEY:
 984                 bmap = input->keybit;
 985                 limit = KEY_MAX;
 986                 break;
 987         case EV_LED:
 988                 bmap = input->ledbit;
 989                 limit = LED_MAX;
 990                 break;
 991         }
 992
 993         if (unlikely(c > limit || !bmap)) {
 994                 pr_warn_ratelimited("%s: Invalid code %d type %d\n",
 995                                     input->name, c, type);
 996                 *bit = NULL;
 997                 return;
 998         }
 999
1000         usage->type = type;
1001         usage->code = c;
1002         *max = limit;
1003         *bit = bmap;
1004 }
1005
1006 /**
1007  * hid_map_usage_clear - map usage input bits and clear the input bit
1008  *
1009  * The same as hid_map_usage, except the @c bit is also cleared in supported
1010  * bits (@bit).
1011  */
1012 static inline void hid_map_usage_clear(struct hid_input *hidinput,
1013                 struct hid_usage *usage, unsigned long **bit, int *max,
1014                 __u8 type, __u16 c)
1015 {
1016         hid_map_usage(hidinput, usage, bit, max, type, c);
1017         if (*bit)
1018                 clear_bit(usage->code, *bit);
1019 }
1020
1021 /**
1022  * hid_parse - parse HW reports
1023  *
1024  * @hdev: hid device
1025  *
1026  * Call this from probe after you set up the device (if needed). Your
1027  * report_fixup will be called (if non-NULL) after reading raw report from
1028  * device before passing it to hid layer for real parsing.
1029  */
1030 static inline int __must_check hid_parse(struct hid_device *hdev)
1031 {
1032         return hid_open_report(hdev);
1033 }
1034
1035 int __must_check hid_hw_start(struct hid_device *hdev,
1036                               unsigned int connect_mask);
1037 void hid_hw_stop(struct hid_device *hdev);
1038 int __must_check hid_hw_open(struct hid_device *hdev);
1039 void hid_hw_close(struct hid_device *hdev);
1040
1041 /**
1042  * hid_hw_power - requests underlying HW to go into given power mode
1043  *
1044  * @hdev: hid device
1045  * @level: requested power level (one of %PM_HINT_* defines)
1046  *
1047  * This function requests underlying hardware to enter requested power
1048  * mode.
1049  */
1050
1051 static inline int hid_hw_power(struct hid_device *hdev, int level)
1052 {
1053         return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0;
1054 }
1055
1056
1057 /**
1058  * hid_hw_request - send report request to device
1059  *
1060  * @hdev: hid device
1061  * @report: report to send
1062  * @reqtype: hid request type
1063  */
1064 static inline void hid_hw_request(struct hid_device *hdev,
1065                                   struct hid_report *report, int reqtype)
1066 {
1067         if (hdev->ll_driver->request)
1068                 return hdev->ll_driver->request(hdev, report, reqtype);
1069
1070         __hid_request(hdev, report, reqtype);
1071 }
1072
1073 /**
1074  * hid_hw_raw_request - send report request to device
1075  *
1076  * @hdev: hid device
1077  * @reportnum: report ID
1078  * @buf: in/out data to transfer
1079  * @len: length of buf
1080  * @rtype: HID report type
1081  * @reqtype: HID_REQ_GET_REPORT or HID_REQ_SET_REPORT
1082  *
1083  * @return: count of data transfered, negative if error
1084  *
1085  * Same behavior as hid_hw_request, but with raw buffers instead.
1086  */
1087 static inline int hid_hw_raw_request(struct hid_device *hdev,
1088                                   unsigned char reportnum, __u8 *buf,
1089                                   size_t len, unsigned char rtype, int reqtype)
1090 {
1091         if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf)
1092                 return -EINVAL;
1093
1094         return hdev->ll_driver->raw_request(hdev, reportnum, buf, len,
1095                                                     rtype, reqtype);
1096 }
1097
1098 /**
1099  * hid_hw_output_report - send output report to device
1100  *
1101  * @hdev: hid device
1102  * @buf: raw data to transfer
1103  * @len: length of buf
1104  *
1105  * @return: count of data transfered, negative if error
1106  */
1107 static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf,
1108                                         size_t len)
1109 {
1110         if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf)
1111                 return -EINVAL;
1112
1113         if (hdev->ll_driver->output_report)
1114                 return hdev->ll_driver->output_report(hdev, buf, len);
1115
1116         return -ENOSYS;
1117 }
1118
1119 /**
1120  * hid_hw_idle - send idle request to device
1121  *
1122  * @hdev: hid device
1123  * @report: report to control
1124  * @idle: idle state
1125  * @reqtype: hid request type
1126  */
1127 static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle,
1128                 int reqtype)
1129 {
1130         if (hdev->ll_driver->idle)
1131                 return hdev->ll_driver->idle(hdev, report, idle, reqtype);
1132
1133         return 0;
1134 }
1135
1136 /**
1137  * hid_hw_wait - wait for buffered io to complete
1138  *
1139  * @hdev: hid device
1140  */
1141 static inline void hid_hw_wait(struct hid_device *hdev)
1142 {
1143         if (hdev->ll_driver->wait)
1144                 hdev->ll_driver->wait(hdev);
1145 }
1146
1147 /**
1148  * hid_report_len - calculate the report length
1149  *
1150  * @report: the report we want to know the length
1151  */
1152 static inline u32 hid_report_len(struct hid_report *report)
1153 {
1154         return DIV_ROUND_UP(report->size, 8) + (report->id > 0);
1155 }
1156
1157 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size,
1158                 int interrupt);
1159
1160 /* HID quirks API */
1161 unsigned long hid_lookup_quirk(const struct hid_device *hdev);
1162 int hid_quirks_init(char **quirks_param, __u16 bus, int count);
1163 void hid_quirks_exit(__u16 bus);
1164
1165 #ifdef CONFIG_HID_PID
1166 int hid_pidff_init(struct hid_device *hid);
1167 #else
1168 #define hid_pidff_init NULL
1169 #endif
1170
1171 #define dbg_hid(format, arg...)                                         \
1172 do {                                                                    \
1173         if (hid_debug)                                                  \
1174                 printk(KERN_DEBUG "%s: " format, __FILE__, ##arg);      \
1175 } while (0)
1176
1177 #define hid_printk(level, hid, fmt, arg...)             \
1178         dev_printk(level, &(hid)->dev, fmt, ##arg)
1179 #define hid_emerg(hid, fmt, arg...)                     \
1180         dev_emerg(&(hid)->dev, fmt, ##arg)
1181 #define hid_crit(hid, fmt, arg...)                      \
1182         dev_crit(&(hid)->dev, fmt, ##arg)
1183 #define hid_alert(hid, fmt, arg...)                     \
1184         dev_alert(&(hid)->dev, fmt, ##arg)
1185 #define hid_err(hid, fmt, arg...)                       \
1186         dev_err(&(hid)->dev, fmt, ##arg)
1187 #define hid_notice(hid, fmt, arg...)                    \
1188         dev_notice(&(hid)->dev, fmt, ##arg)
1189 #define hid_warn(hid, fmt, arg...)                      \
1190         dev_warn(&(hid)->dev, fmt, ##arg)
1191 #define hid_info(hid, fmt, arg...)                      \
1192         dev_info(&(hid)->dev, fmt, ##arg)
1193 #define hid_dbg(hid, fmt, arg...)                       \
1194         dev_dbg(&(hid)->dev, fmt, ##arg)
1195
1196 #endif