include/linux/hid.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *  Copyright (c) 1999 Andreas Gal
   4  *  Copyright (c) 2000-2001 Vojtech Pavlik
   5  *  Copyright (c) 2006-2007 Jiri Kosina
   6  */
   7 /*
   8  *
   9  * Should you need to contact me, the author, you can do so either by
  10  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  11  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  12  */
  13 #ifndef __HID_H
  14 #define __HID_H
  15
  16
  17 #include <linux/bitops.h>
  18 #include <linux/types.h>
  19 #include <linux/slab.h>
  20 #include <linux/list.h>
  21 #include <linux/mod_devicetable.h> /* hid_device_id */
  22 #include <linux/timer.h>
  23 #include <linux/workqueue.h>
  24 #include <linux/input.h>
  25 #include <linux/semaphore.h>
  26 #include <linux/mutex.h>
  27 #include <linux/power_supply.h>
  28 #include <uapi/linux/hid.h>
  29
  30 /*
  31  * We parse each description item into this structure. Short items data
  32  * values are expanded to 32-bit signed int, long items contain a pointer
  33  * into the data area.
  34  */
  35
  36 struct hid_item {
  37         unsigned  format;
  38         __u8      size;
  39         __u8      type;
  40         __u8      tag;
  41         union {
  42             __u8   u8;
  43             __s8   s8;
  44             __u16  u16;
  45             __s16  s16;
  46             __u32  u32;
  47             __s32  s32;
  48             __u8  *longdata;
  49         } data;
  50 };
  51
  52 /*
  53  * HID report item format
  54  */
  55
  56 #define HID_ITEM_FORMAT_SHORT   0
  57 #define HID_ITEM_FORMAT_LONG    1
  58
  59 /*
  60  * Special tag indicating long items
  61  */
  62
  63 #define HID_ITEM_TAG_LONG       15
  64
  65 /*
  66  * HID report descriptor item type (prefix bit 2,3)
  67  */
  68
  69 #define HID_ITEM_TYPE_MAIN              0
  70 #define HID_ITEM_TYPE_GLOBAL            1
  71 #define HID_ITEM_TYPE_LOCAL             2
  72 #define HID_ITEM_TYPE_RESERVED          3
  73
  74 /*
  75  * HID report descriptor main item tags
  76  */
  77
  78 #define HID_MAIN_ITEM_TAG_INPUT                 8
  79 #define HID_MAIN_ITEM_TAG_OUTPUT                9
  80 #define HID_MAIN_ITEM_TAG_FEATURE               11
  81 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION      10
  82 #define HID_MAIN_ITEM_TAG_END_COLLECTION        12
  83
  84 /*
  85  * HID report descriptor main item contents
  86  */
  87
  88 #define HID_MAIN_ITEM_CONSTANT          0x001
  89 #define HID_MAIN_ITEM_VARIABLE          0x002
  90 #define HID_MAIN_ITEM_RELATIVE          0x004
  91 #define HID_MAIN_ITEM_WRAP              0x008
  92 #define HID_MAIN_ITEM_NONLINEAR         0x010
  93 #define HID_MAIN_ITEM_NO_PREFERRED      0x020
  94 #define HID_MAIN_ITEM_NULL_STATE        0x040
  95 #define HID_MAIN_ITEM_VOLATILE          0x080
  96 #define HID_MAIN_ITEM_BUFFERED_BYTE     0x100
  97
  98 /*
  99  * HID report descriptor collection item types
 100  */
 101
 102 #define HID_COLLECTION_PHYSICAL         0
 103 #define HID_COLLECTION_APPLICATION      1
 104 #define HID_COLLECTION_LOGICAL          2
 105 #define HID_COLLECTION_NAMED_ARRAY      4
 106
 107 /*
 108  * HID report descriptor global item tags
 109  */
 110
 111 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE          0
 112 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM     1
 113 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM     2
 114 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM    3
 115 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM    4
 116 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT       5
 117 #define HID_GLOBAL_ITEM_TAG_UNIT                6
 118 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE         7
 119 #define HID_GLOBAL_ITEM_TAG_REPORT_ID           8
 120 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT        9
 121 #define HID_GLOBAL_ITEM_TAG_PUSH                10
 122 #define HID_GLOBAL_ITEM_TAG_POP                 11
 123
 124 /*
 125  * HID report descriptor local item tags
 126  */
 127
 128 #define HID_LOCAL_ITEM_TAG_USAGE                0
 129 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM        1
 130 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM        2
 131 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX     3
 132 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM   4
 133 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM   5
 134 #define HID_LOCAL_ITEM_TAG_STRING_INDEX         7
 135 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM       8
 136 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM       9
 137 #define HID_LOCAL_ITEM_TAG_DELIMITER            10
 138
 139 /*
 140  * HID usage tables
 141  */
 142
 143 #define HID_USAGE_PAGE          0xffff0000
 144
 145 #define HID_UP_UNDEFINED        0x00000000
 146 #define HID_UP_GENDESK          0x00010000
 147 #define HID_UP_SIMULATION       0x00020000
 148 #define HID_UP_GENDEVCTRLS      0x00060000
 149 #define HID_UP_KEYBOARD         0x00070000
 150 #define HID_UP_LED              0x00080000
 151 #define HID_UP_BUTTON           0x00090000
 152 #define HID_UP_ORDINAL          0x000a0000
 153 #define HID_UP_TELEPHONY        0x000b0000
 154 #define HID_UP_CONSUMER         0x000c0000
 155 #define HID_UP_DIGITIZER        0x000d0000
 156 #define HID_UP_PID              0x000f0000
 157 #define HID_UP_BATTERY          0x00850000
 158 #define HID_UP_HPVENDOR         0xff7f0000
 159 #define HID_UP_HPVENDOR2        0xff010000
 160 #define HID_UP_MSVENDOR         0xff000000
 161 #define HID_UP_CUSTOM           0x00ff0000
 162 #define HID_UP_LOGIVENDOR       0xffbc0000
 163 #define HID_UP_LOGIVENDOR2   0xff090000
 164 #define HID_UP_LOGIVENDOR3   0xff430000
 165 #define HID_UP_LNVENDOR         0xffa00000
 166 #define HID_UP_SENSOR           0x00200000
 167 #define HID_UP_ASUSVENDOR       0xff310000
 168 #define HID_UP_GOOGLEVENDOR     0xffd10000
 169
 170 #define HID_USAGE               0x0000ffff
 171
 172 #define HID_GD_POINTER          0x00010001
 173 #define HID_GD_MOUSE            0x00010002
 174 #define HID_GD_JOYSTICK         0x00010004
 175 #define HID_GD_GAMEPAD          0x00010005
 176 #define HID_GD_KEYBOARD         0x00010006
 177 #define HID_GD_KEYPAD           0x00010007
 178 #define HID_GD_MULTIAXIS        0x00010008
 179 /*
 180  * Microsoft Win8 Wireless Radio Controls extensions CA, see:
 181  * http://www.usb.org/developers/hidpage/HUTRR40RadioHIDUsagesFinal.pdf
 182  */
 183 #define HID_GD_WIRELESS_RADIO_CTLS      0x0001000c
 184 /*
 185  * System Multi-Axis, see:
 186  * http://www.usb.org/developers/hidpage/HUTRR62_-_Generic_Desktop_CA_for_System_Multi-Axis_Controllers.txt
 187  */
 188 #define HID_GD_SYSTEM_MULTIAXIS 0x0001000e
 189
 190 #define HID_GD_X                0x00010030
 191 #define HID_GD_Y                0x00010031
 192 #define HID_GD_Z                0x00010032
 193 #define HID_GD_RX               0x00010033
 194 #define HID_GD_RY               0x00010034
 195 #define HID_GD_RZ               0x00010035
 196 #define HID_GD_SLIDER           0x00010036
 197 #define HID_GD_DIAL             0x00010037
 198 #define HID_GD_WHEEL            0x00010038
 199 #define HID_GD_HATSWITCH        0x00010039
 200 #define HID_GD_BUFFER           0x0001003a
 201 #define HID_GD_BYTECOUNT        0x0001003b
 202 #define HID_GD_MOTION           0x0001003c
 203 #define HID_GD_START            0x0001003d
 204 #define HID_GD_SELECT           0x0001003e
 205 #define HID_GD_VX               0x00010040
 206 #define HID_GD_VY               0x00010041
 207 #define HID_GD_VZ               0x00010042
 208 #define HID_GD_VBRX             0x00010043
 209 #define HID_GD_VBRY             0x00010044
 210 #define HID_GD_VBRZ             0x00010045
 211 #define HID_GD_VNO              0x00010046
 212 #define HID_GD_FEATURE          0x00010047
 213 #define HID_GD_RESOLUTION_MULTIPLIER    0x00010048
 214 #define HID_GD_SYSTEM_CONTROL   0x00010080
 215 #define HID_GD_UP               0x00010090
 216 #define HID_GD_DOWN             0x00010091
 217 #define HID_GD_RIGHT            0x00010092
 218 #define HID_GD_LEFT             0x00010093
 219 /* Microsoft Win8 Wireless Radio Controls CA usage codes */
 220 #define HID_GD_RFKILL_BTN       0x000100c6
 221 #define HID_GD_RFKILL_LED       0x000100c7
 222 #define HID_GD_RFKILL_SWITCH    0x000100c8
 223
 224 #define HID_DC_BATTERYSTRENGTH  0x00060020
 225
 226 #define HID_CP_CONSUMER_CONTROL 0x000c0001
 227 #define HID_CP_AC_PAN           0x000c0238
 228
 229 #define HID_DG_DIGITIZER        0x000d0001
 230 #define HID_DG_PEN              0x000d0002
 231 #define HID_DG_LIGHTPEN         0x000d0003
 232 #define HID_DG_TOUCHSCREEN      0x000d0004
 233 #define HID_DG_TOUCHPAD         0x000d0005
 234 #define HID_DG_WHITEBOARD       0x000d0006
 235 #define HID_DG_STYLUS           0x000d0020
 236 #define HID_DG_PUCK             0x000d0021
 237 #define HID_DG_FINGER           0x000d0022
 238 #define HID_DG_TIPPRESSURE      0x000d0030
 239 #define HID_DG_BARRELPRESSURE   0x000d0031
 240 #define HID_DG_INRANGE          0x000d0032
 241 #define HID_DG_TOUCH            0x000d0033
 242 #define HID_DG_UNTOUCH          0x000d0034
 243 #define HID_DG_TAP              0x000d0035
 244 #define HID_DG_TRANSDUCER_INDEX 0x000d0038
 245 #define HID_DG_TABLETFUNCTIONKEY        0x000d0039
 246 #define HID_DG_PROGRAMCHANGEKEY 0x000d003a
 247 #define HID_DG_BATTERYSTRENGTH  0x000d003b
 248 #define HID_DG_INVERT           0x000d003c
 249 #define HID_DG_TILT_X           0x000d003d
 250 #define HID_DG_TILT_Y           0x000d003e
 251 #define HID_DG_TWIST            0x000d0041
 252 #define HID_DG_TIPSWITCH        0x000d0042
 253 #define HID_DG_TIPSWITCH2       0x000d0043
 254 #define HID_DG_BARRELSWITCH     0x000d0044
 255 #define HID_DG_ERASER           0x000d0045
 256 #define HID_DG_TABLETPICK       0x000d0046
 257 #define HID_DG_PEN_COLOR                        0x000d005c
 258 #define HID_DG_PEN_LINE_WIDTH                   0x000d005e
 259 #define HID_DG_PEN_LINE_STYLE                   0x000d0070
 260 #define HID_DG_PEN_LINE_STYLE_INK               0x000d0072
 261 #define HID_DG_PEN_LINE_STYLE_PENCIL            0x000d0073
 262 #define HID_DG_PEN_LINE_STYLE_HIGHLIGHTER       0x000d0074
 263 #define HID_DG_PEN_LINE_STYLE_CHISEL_MARKER     0x000d0075
 264 #define HID_DG_PEN_LINE_STYLE_BRUSH             0x000d0076
 265 #define HID_DG_PEN_LINE_STYLE_NO_PREFERENCE     0x000d0077
 266
 267 #define HID_CP_CONSUMERCONTROL  0x000c0001
 268 #define HID_CP_NUMERICKEYPAD    0x000c0002
 269 #define HID_CP_PROGRAMMABLEBUTTONS      0x000c0003
 270 #define HID_CP_MICROPHONE       0x000c0004
 271 #define HID_CP_HEADPHONE        0x000c0005
 272 #define HID_CP_GRAPHICEQUALIZER 0x000c0006
 273 #define HID_CP_FUNCTIONBUTTONS  0x000c0036
 274 #define HID_CP_SELECTION        0x000c0080
 275 #define HID_CP_MEDIASELECTION   0x000c0087
 276 #define HID_CP_SELECTDISC       0x000c00ba
 277 #define HID_CP_VOLUMEUP         0x000c00e9
 278 #define HID_CP_VOLUMEDOWN       0x000c00ea
 279 #define HID_CP_PLAYBACKSPEED    0x000c00f1
 280 #define HID_CP_PROXIMITY        0x000c0109
 281 #define HID_CP_SPEAKERSYSTEM    0x000c0160
 282 #define HID_CP_CHANNELLEFT      0x000c0161
 283 #define HID_CP_CHANNELRIGHT     0x000c0162
 284 #define HID_CP_CHANNELCENTER    0x000c0163
 285 #define HID_CP_CHANNELFRONT     0x000c0164
 286 #define HID_CP_CHANNELCENTERFRONT       0x000c0165
 287 #define HID_CP_CHANNELSIDE      0x000c0166
 288 #define HID_CP_CHANNELSURROUND  0x000c0167
 289 #define HID_CP_CHANNELLOWFREQUENCYENHANCEMENT   0x000c0168
 290 #define HID_CP_CHANNELTOP       0x000c0169
 291 #define HID_CP_CHANNELUNKNOWN   0x000c016a
 292 #define HID_CP_APPLICATIONLAUNCHBUTTONS 0x000c0180
 293 #define HID_CP_GENERICGUIAPPLICATIONCONTROLS    0x000c0200
 294
 295 #define HID_DG_DEVICECONFIG     0x000d000e
 296 #define HID_DG_DEVICESETTINGS   0x000d0023
 297 #define HID_DG_AZIMUTH          0x000d003f
 298 #define HID_DG_CONFIDENCE       0x000d0047
 299 #define HID_DG_WIDTH            0x000d0048
 300 #define HID_DG_HEIGHT           0x000d0049
 301 #define HID_DG_CONTACTID        0x000d0051
 302 #define HID_DG_INPUTMODE        0x000d0052
 303 #define HID_DG_DEVICEINDEX      0x000d0053
 304 #define HID_DG_CONTACTCOUNT     0x000d0054
 305 #define HID_DG_CONTACTMAX       0x000d0055
 306 #define HID_DG_SCANTIME         0x000d0056
 307 #define HID_DG_SURFACESWITCH    0x000d0057
 308 #define HID_DG_BUTTONSWITCH     0x000d0058
 309 #define HID_DG_BUTTONTYPE       0x000d0059
 310 #define HID_DG_BARRELSWITCH2    0x000d005a
 311 #define HID_DG_TOOLSERIALNUMBER 0x000d005b
 312 #define HID_DG_LATENCYMODE      0x000d0060
 313
 314 #define HID_BAT_ABSOLUTESTATEOFCHARGE   0x00850065
 315
 316 #define HID_VD_ASUS_CUSTOM_MEDIA_KEYS   0xff310076
 317 /*
 318  * HID report types --- Ouch! HID spec says 1 2 3!
 319  */
 320
 321 #define HID_INPUT_REPORT        0
 322 #define HID_OUTPUT_REPORT       1
 323 #define HID_FEATURE_REPORT      2
 324
 325 #define HID_REPORT_TYPES        3
 326
 327 /*
 328  * HID connect requests
 329  */
 330
 331 #define HID_CONNECT_HIDINPUT            BIT(0)
 332 #define HID_CONNECT_HIDINPUT_FORCE      BIT(1)
 333 #define HID_CONNECT_HIDRAW              BIT(2)
 334 #define HID_CONNECT_HIDDEV              BIT(3)
 335 #define HID_CONNECT_HIDDEV_FORCE        BIT(4)
 336 #define HID_CONNECT_FF                  BIT(5)
 337 #define HID_CONNECT_DRIVER              BIT(6)
 338 #define HID_CONNECT_DEFAULT     (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \
 339                 HID_CONNECT_HIDDEV|HID_CONNECT_FF)
 340
 341 /*
 342  * HID device quirks.
 343  */
 344
 345 /*
 346  * Increase this if you need to configure more HID quirks at module load time
 347  */
 348 #define MAX_USBHID_BOOT_QUIRKS 4
 349
 350 #define HID_QUIRK_INVERT                        BIT(0)
 351 #define HID_QUIRK_NOTOUCH                       BIT(1)
 352 #define HID_QUIRK_IGNORE                        BIT(2)
 353 #define HID_QUIRK_NOGET                         BIT(3)
 354 #define HID_QUIRK_HIDDEV_FORCE                  BIT(4)
 355 #define HID_QUIRK_BADPAD                        BIT(5)
 356 #define HID_QUIRK_MULTI_INPUT                   BIT(6)
 357 #define HID_QUIRK_HIDINPUT_FORCE                BIT(7)
 358 /* BIT(8) reserved for backward compatibility, was HID_QUIRK_NO_EMPTY_INPUT */
 359 /* BIT(9) reserved for backward compatibility, was NO_INIT_INPUT_REPORTS */
 360 #define HID_QUIRK_ALWAYS_POLL                   BIT(10)
 361 #define HID_QUIRK_INPUT_PER_APP                 BIT(11)
 362 #define HID_QUIRK_X_INVERT                      BIT(12)
 363 #define HID_QUIRK_Y_INVERT                      BIT(13)
 364 #define HID_QUIRK_SKIP_OUTPUT_REPORTS           BIT(16)
 365 #define HID_QUIRK_SKIP_OUTPUT_REPORT_ID         BIT(17)
 366 #define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP  BIT(18)
 367 #define HID_QUIRK_HAVE_SPECIAL_DRIVER           BIT(19)
 368 #define HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE  BIT(20)
 369 #define HID_QUIRK_FULLSPEED_INTERVAL            BIT(28)
 370 #define HID_QUIRK_NO_INIT_REPORTS               BIT(29)
 371 #define HID_QUIRK_NO_IGNORE                     BIT(30)
 372 #define HID_QUIRK_NO_INPUT_SYNC                 BIT(31)
 373
 374 /*
 375  * HID device groups
 376  *
 377  * Note: HID_GROUP_ANY is declared in linux/mod_devicetable.h
 378  * and has a value of 0x0000
 379  */
 380 #define HID_GROUP_GENERIC                       0x0001
 381 #define HID_GROUP_MULTITOUCH                    0x0002
 382 #define HID_GROUP_SENSOR_HUB                    0x0003
 383 #define HID_GROUP_MULTITOUCH_WIN_8              0x0004
 384
 385 /*
 386  * Vendor specific HID device groups
 387  */
 388 #define HID_GROUP_RMI                           0x0100
 389 #define HID_GROUP_WACOM                         0x0101
 390 #define HID_GROUP_LOGITECH_DJ_DEVICE            0x0102
 391 #define HID_GROUP_STEAM                         0x0103
 392 #define HID_GROUP_LOGITECH_27MHZ_DEVICE         0x0104
 393 #define HID_GROUP_VIVALDI                       0x0105
 394
 395 /*
 396  * HID protocol status
 397  */
 398 #define HID_REPORT_PROTOCOL     1
 399 #define HID_BOOT_PROTOCOL       0
 400
 401 /*
 402  * This is the global environment of the parser. This information is
 403  * persistent for main-items. The global environment can be saved and
 404  * restored with PUSH/POP statements.
 405  */
 406
 407 struct hid_global {
 408         unsigned usage_page;
 409         __s32    logical_minimum;
 410         __s32    logical_maximum;
 411         __s32    physical_minimum;
 412         __s32    physical_maximum;
 413         __s32    unit_exponent;
 414         unsigned unit;
 415         unsigned report_id;
 416         unsigned report_size;
 417         unsigned report_count;
 418 };
 419
 420 /*
 421  * This is the local environment. It is persistent up the next main-item.
 422  */
 423
 424 #define HID_MAX_USAGES                  12288
 425 #define HID_DEFAULT_NUM_COLLECTIONS     16
 426
 427 struct hid_local {
 428         unsigned usage[HID_MAX_USAGES]; /* usage array */
 429         u8 usage_size[HID_MAX_USAGES]; /* usage size array */
 430         unsigned collection_index[HID_MAX_USAGES]; /* collection index array */
 431         unsigned usage_index;
 432         unsigned usage_minimum;
 433         unsigned delimiter_depth;
 434         unsigned delimiter_branch;
 435 };
 436
 437 /*
 438  * This is the collection stack. We climb up the stack to determine
 439  * application and function of each field.
 440  */
 441
 442 struct hid_collection {
 443         int parent_idx; /* device->collection */
 444         unsigned type;
 445         unsigned usage;
 446         unsigned level;
 447 };
 448
 449 struct hid_usage {
 450         unsigned  hid;                  /* hid usage code */
 451         unsigned  collection_index;     /* index into collection array */
 452         unsigned  usage_index;          /* index into usage array */
 453         __s8      resolution_multiplier;/* Effective Resolution Multiplier
 454                                            (HUT v1.12, 4.3.1), default: 1 */
 455         /* hidinput data */
 456         __s8      wheel_factor;         /* 120/resolution_multiplier */
 457         __u16     code;                 /* input driver code */
 458         __u8      type;                 /* input driver type */
 459         __s8      hat_min;              /* hat switch fun */
 460         __s8      hat_max;              /* ditto */
 461         __s8      hat_dir;              /* ditto */
 462         __s16     wheel_accumulated;    /* hi-res wheel */
 463 };
 464
 465 struct hid_input;
 466
 467 struct hid_field {
 468         unsigned  physical;             /* physical usage for this field */
 469         unsigned  logical;              /* logical usage for this field */
 470         unsigned  application;          /* application usage for this field */
 471         struct hid_usage *usage;        /* usage table for this function */
 472         unsigned  maxusage;             /* maximum usage index */
 473         unsigned  flags;                /* main-item flags (i.e. volatile,array,constant) */
 474         unsigned  report_offset;        /* bit offset in the report */
 475         unsigned  report_size;          /* size of this field in the report */
 476         unsigned  report_count;         /* number of this field in the report */
 477         unsigned  report_type;          /* (input,output,feature) */
 478         __s32    *value;                /* last known value(s) */
 479         __s32     logical_minimum;
 480         __s32     logical_maximum;
 481         __s32     physical_minimum;
 482         __s32     physical_maximum;
 483         __s32     unit_exponent;
 484         unsigned  unit;
 485         struct hid_report *report;      /* associated report */
 486         unsigned index;                 /* index into report->field[] */
 487         /* hidinput data */
 488         struct hid_input *hidinput;     /* associated input structure */
 489         __u16 dpad;                     /* dpad input code */
 490 };
 491
 492 #define HID_MAX_FIELDS 256
 493
 494 struct hid_report {
 495         struct list_head list;
 496         struct list_head hidinput_list;
 497         unsigned int id;                                /* id of this report */
 498         unsigned int type;                              /* report type */
 499         unsigned int application;                       /* application usage for this report */
 500         struct hid_field *field[HID_MAX_FIELDS];        /* fields of the report */
 501         unsigned maxfield;                              /* maximum valid field index */
 502         unsigned size;                                  /* size of the report (bits) */
 503         struct hid_device *device;                      /* associated device */
 504 };
 505
 506 #define HID_MAX_IDS 256
 507
 508 struct hid_report_enum {
 509         unsigned numbered;
 510         struct list_head report_list;
 511         struct hid_report *report_id_hash[HID_MAX_IDS];
 512 };
 513
 514 #define HID_MIN_BUFFER_SIZE     64              /* make sure there is at least a packet size of space */
 515 #define HID_MAX_BUFFER_SIZE     16384           /* 16kb */
 516 #define HID_CONTROL_FIFO_SIZE   256             /* to init devices with >100 reports */
 517 #define HID_OUTPUT_FIFO_SIZE    64
 518
 519 struct hid_control_fifo {
 520         unsigned char dir;
 521         struct hid_report *report;
 522         char *raw_report;
 523 };
 524
 525 struct hid_output_fifo {
 526         struct hid_report *report;
 527         char *raw_report;
 528 };
 529
 530 #define HID_CLAIMED_INPUT       BIT(0)
 531 #define HID_CLAIMED_HIDDEV      BIT(1)
 532 #define HID_CLAIMED_HIDRAW      BIT(2)
 533 #define HID_CLAIMED_DRIVER      BIT(3)
 534
 535 #define HID_STAT_ADDED          BIT(0)
 536 #define HID_STAT_PARSED         BIT(1)
 537 #define HID_STAT_DUP_DETECTED   BIT(2)
 538 #define HID_STAT_REPROBED       BIT(3)
 539
 540 struct hid_input {
 541         struct list_head list;
 542         struct hid_report *report;
 543         struct input_dev *input;
 544         const char *name;
 545         bool registered;
 546         struct list_head reports;       /* the list of reports */
 547         unsigned int application;       /* application usage for this input */
 548 };
 549
 550 enum hid_type {
 551         HID_TYPE_OTHER = 0,
 552         HID_TYPE_USBMOUSE,
 553         HID_TYPE_USBNONE
 554 };
 555
 556 enum hid_battery_status {
 557         HID_BATTERY_UNKNOWN = 0,
 558         HID_BATTERY_QUERIED,            /* Kernel explicitly queried battery strength */
 559         HID_BATTERY_REPORTED,           /* Device sent unsolicited battery strength report */
 560 };
 561
 562 struct hid_driver;
 563 struct hid_ll_driver;
 564
 565 struct hid_device {                                                     /* device report descriptor */
 566         __u8 *dev_rdesc;
 567         unsigned dev_rsize;
 568         __u8 *rdesc;
 569         unsigned rsize;
 570         struct hid_collection *collection;                              /* List of HID collections */
 571         unsigned collection_size;                                       /* Number of allocated hid_collections */
 572         unsigned maxcollection;                                         /* Number of parsed collections */
 573         unsigned maxapplication;                                        /* Number of applications */
 574         __u16 bus;                                                      /* BUS ID */
 575         __u16 group;                                                    /* Report group */
 576         __u32 vendor;                                                   /* Vendor ID */
 577         __u32 product;                                                  /* Product ID */
 578         __u32 version;                                                  /* HID version */
 579         enum hid_type type;                                             /* device type (mouse, kbd, ...) */
 580         unsigned country;                                               /* HID country */
 581         struct hid_report_enum report_enum[HID_REPORT_TYPES];
 582         struct work_struct led_work;                                    /* delayed LED worker */
 583
 584         struct semaphore driver_input_lock;                             /* protects the current driver */
 585         struct device dev;                                              /* device */
 586         struct hid_driver *driver;
 587
 588         struct hid_ll_driver *ll_driver;
 589         struct mutex ll_open_lock;
 590         unsigned int ll_open_count;
 591
 592 #ifdef CONFIG_HID_BATTERY_STRENGTH
 593         /*
 594          * Power supply information for HID devices which report
 595          * battery strength. power_supply was successfully registered if
 596          * battery is non-NULL.
 597          */
 598         struct power_supply *battery;
 599         __s32 battery_capacity;
 600         __s32 battery_min;
 601         __s32 battery_max;
 602         __s32 battery_report_type;
 603         __s32 battery_report_id;
 604         enum hid_battery_status battery_status;
 605         bool battery_avoid_query;
 606         ktime_t battery_ratelimit_time;
 607 #endif
 608
 609         unsigned long status;                                           /* see STAT flags above */
 610         unsigned claimed;                                               /* Claimed by hidinput, hiddev? */
 611         unsigned quirks;                                                /* Various quirks the device can pull on us */
 612         bool io_started;                                                /* If IO has started */
 613
 614         struct list_head inputs;                                        /* The list of inputs */
 615         void *hiddev;                                                   /* The hiddev structure */
 616         void *hidraw;
 617
 618         char name[128];                                                 /* Device name */
 619         char phys[64];                                                  /* Device physical location */
 620         char uniq[64];                                                  /* Device unique identifier (serial #) */
 621
 622         void *driver_data;
 623
 624         /* temporary hid_ff handling (until moved to the drivers) */
 625         int (*ff_init)(struct hid_device *);
 626
 627         /* hiddev event handler */
 628         int (*hiddev_connect)(struct hid_device *, unsigned int);
 629         void (*hiddev_disconnect)(struct hid_device *);
 630         void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field,
 631                                   struct hid_usage *, __s32);
 632         void (*hiddev_report_event) (struct hid_device *, struct hid_report *);
 633
 634         /* debugging support via debugfs */
 635         unsigned short debug;
 636         struct dentry *debug_dir;
 637         struct dentry *debug_rdesc;
 638         struct dentry *debug_events;
 639         struct list_head debug_list;
 640         spinlock_t  debug_list_lock;
 641         wait_queue_head_t debug_wait;
 642 };
 643
 644 #define to_hid_device(pdev) \
 645         container_of(pdev, struct hid_device, dev)
 646
 647 static inline void *hid_get_drvdata(struct hid_device *hdev)
 648 {
 649         return dev_get_drvdata(&hdev->dev);
 650 }
 651
 652 static inline void hid_set_drvdata(struct hid_device *hdev, void *data)
 653 {
 654         dev_set_drvdata(&hdev->dev, data);
 655 }
 656
 657 #define HID_GLOBAL_STACK_SIZE 4
 658 #define HID_COLLECTION_STACK_SIZE 4
 659
 660 #define HID_SCAN_FLAG_MT_WIN_8                  BIT(0)
 661 #define HID_SCAN_FLAG_VENDOR_SPECIFIC           BIT(1)
 662 #define HID_SCAN_FLAG_GD_POINTER                BIT(2)
 663
 664 struct hid_parser {
 665         struct hid_global     global;
 666         struct hid_global     global_stack[HID_GLOBAL_STACK_SIZE];
 667         unsigned int          global_stack_ptr;
 668         struct hid_local      local;
 669         unsigned int         *collection_stack;
 670         unsigned int          collection_stack_ptr;
 671         unsigned int          collection_stack_size;
 672         struct hid_device    *device;
 673         unsigned int          scan_flags;
 674 };
 675
 676 struct hid_class_descriptor {
 677         __u8  bDescriptorType;
 678         __le16 wDescriptorLength;
 679 } __attribute__ ((packed));
 680
 681 struct hid_descriptor {
 682         __u8  bLength;
 683         __u8  bDescriptorType;
 684         __le16 bcdHID;
 685         __u8  bCountryCode;
 686         __u8  bNumDescriptors;
 687
 688         struct hid_class_descriptor desc[1];
 689 } __attribute__ ((packed));
 690
 691 #define HID_DEVICE(b, g, ven, prod)                                     \
 692         .bus = (b), .group = (g), .vendor = (ven), .product = (prod)
 693 #define HID_USB_DEVICE(ven, prod)                               \
 694         .bus = BUS_USB, .vendor = (ven), .product = (prod)
 695 #define HID_BLUETOOTH_DEVICE(ven, prod)                                 \
 696         .bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod)
 697 #define HID_I2C_DEVICE(ven, prod)                               \
 698         .bus = BUS_I2C, .vendor = (ven), .product = (prod)
 699
 700 #define HID_REPORT_ID(rep) \
 701         .report_type = (rep)
 702 #define HID_USAGE_ID(uhid, utype, ucode) \
 703         .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode)
 704 /* we don't want to catch types and codes equal to 0 */
 705 #define HID_TERMINATOR          (HID_ANY_ID - 1)
 706
 707 struct hid_report_id {
 708         __u32 report_type;
 709 };
 710 struct hid_usage_id {
 711         __u32 usage_hid;
 712         __u32 usage_type;
 713         __u32 usage_code;
 714 };
 715
 716 /**
 717  * struct hid_driver
 718  * @name: driver name (e.g. "Footech_bar-wheel")
 719  * @id_table: which devices is this driver for (must be non-NULL for probe
 720  *            to be called)
 721  * @dyn_list: list of dynamically added device ids
 722  * @dyn_lock: lock protecting @dyn_list
 723  * @match: check if the given device is handled by this driver
 724  * @probe: new device inserted
 725  * @remove: device removed (NULL if not a hot-plug capable driver)
 726  * @report_table: on which reports to call raw_event (NULL means all)
 727  * @raw_event: if report in report_table, this hook is called (NULL means nop)
 728  * @usage_table: on which events to call event (NULL means all)
 729  * @event: if usage in usage_table, this hook is called (NULL means nop)
 730  * @report: this hook is called after parsing a report (NULL means nop)
 731  * @report_fixup: called before report descriptor parsing (NULL means nop)
 732  * @input_mapping: invoked on input registering before mapping an usage
 733  * @input_mapped: invoked on input registering after mapping an usage
 734  * @input_configured: invoked just before the device is registered
 735  * @feature_mapping: invoked on feature registering
 736  * @suspend: invoked on suspend (NULL means nop)
 737  * @resume: invoked on resume if device was not reset (NULL means nop)
 738  * @reset_resume: invoked on resume if device was reset (NULL means nop)
 739  *
 740  * probe should return -errno on error, or 0 on success. During probe,
 741  * input will not be passed to raw_event unless hid_device_io_start is
 742  * called.
 743  *
 744  * raw_event and event should return negative on error, any other value will
 745  * pass the event on to .event() typically return 0 for success.
 746  *
 747  * input_mapping shall return a negative value to completely ignore this usage
 748  * (e.g. doubled or invalid usage), zero to continue with parsing of this
 749  * usage by generic code (no special handling needed) or positive to skip
 750  * generic parsing (needed special handling which was done in the hook already)
 751  * input_mapped shall return negative to inform the layer that this usage
 752  * should not be considered for further processing or zero to notify that
 753  * no processing was performed and should be done in a generic manner
 754  * Both these functions may be NULL which means the same behavior as returning
 755  * zero from them.
 756  */
 757 struct hid_driver {
 758         char *name;
 759         const struct hid_device_id *id_table;
 760
 761         struct list_head dyn_list;
 762         spinlock_t dyn_lock;
 763
 764         bool (*match)(struct hid_device *dev, bool ignore_special_driver);
 765         int (*probe)(struct hid_device *dev, const struct hid_device_id *id);
 766         void (*remove)(struct hid_device *dev);
 767
 768         const struct hid_report_id *report_table;
 769         int (*raw_event)(struct hid_device *hdev, struct hid_report *report,
 770                         u8 *data, int size);
 771         const struct hid_usage_id *usage_table;
 772         int (*event)(struct hid_device *hdev, struct hid_field *field,
 773                         struct hid_usage *usage, __s32 value);
 774         void (*report)(struct hid_device *hdev, struct hid_report *report);
 775
 776         __u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf,
 777                         unsigned int *size);
 778
 779         int (*input_mapping)(struct hid_device *hdev,
 780                         struct hid_input *hidinput, struct hid_field *field,
 781                         struct hid_usage *usage, unsigned long **bit, int *max);
 782         int (*input_mapped)(struct hid_device *hdev,
 783                         struct hid_input *hidinput, struct hid_field *field,
 784                         struct hid_usage *usage, unsigned long **bit, int *max);
 785         int (*input_configured)(struct hid_device *hdev,
 786                                 struct hid_input *hidinput);
 787         void (*feature_mapping)(struct hid_device *hdev,
 788                         struct hid_field *field,
 789                         struct hid_usage *usage);
 790 #ifdef CONFIG_PM
 791         int (*suspend)(struct hid_device *hdev, pm_message_t message);
 792         int (*resume)(struct hid_device *hdev);
 793         int (*reset_resume)(struct hid_device *hdev);
 794 #endif
 795 /* private: */
 796         struct device_driver driver;
 797 };
 798
 799 #define to_hid_driver(pdrv) \
 800         container_of(pdrv, struct hid_driver, driver)
 801
 802 /**
 803  * struct hid_ll_driver - low level driver callbacks
 804  * @start: called on probe to start the device
 805  * @stop: called on remove
 806  * @open: called by input layer on open
 807  * @close: called by input layer on close
 808  * @power: request underlying hardware to enter requested power mode
 809  * @parse: this method is called only once to parse the device data,
 810  *         shouldn't allocate anything to not leak memory
 811  * @request: send report request to device (e.g. feature report)
 812  * @wait: wait for buffered io to complete (send/recv reports)
 813  * @raw_request: send raw report request to device (e.g. feature report)
 814  * @output_report: send output report to device
 815  * @idle: send idle request to device
 816  * @may_wakeup: return if device may act as a wakeup source during system-suspend
 817  */
 818 struct hid_ll_driver {
 819         int (*start)(struct hid_device *hdev);
 820         void (*stop)(struct hid_device *hdev);
 821
 822         int (*open)(struct hid_device *hdev);
 823         void (*close)(struct hid_device *hdev);
 824
 825         int (*power)(struct hid_device *hdev, int level);
 826
 827         int (*parse)(struct hid_device *hdev);
 828
 829         void (*request)(struct hid_device *hdev,
 830                         struct hid_report *report, int reqtype);
 831
 832         int (*wait)(struct hid_device *hdev);
 833
 834         int (*raw_request) (struct hid_device *hdev, unsigned char reportnum,
 835                             __u8 *buf, size_t len, unsigned char rtype,
 836                             int reqtype);
 837
 838         int (*output_report) (struct hid_device *hdev, __u8 *buf, size_t len);
 839
 840         int (*idle)(struct hid_device *hdev, int report, int idle, int reqtype);
 841         bool (*may_wakeup)(struct hid_device *hdev);
 842 };
 843
 844 extern struct hid_ll_driver i2c_hid_ll_driver;
 845 extern struct hid_ll_driver hidp_hid_driver;
 846 extern struct hid_ll_driver uhid_hid_driver;
 847 extern struct hid_ll_driver usb_hid_driver;
 848
 849 static inline bool hid_is_using_ll_driver(struct hid_device *hdev,
 850                 struct hid_ll_driver *driver)
 851 {
 852         return hdev->ll_driver == driver;
 853 }
 854
 855 static inline bool hid_is_usb(struct hid_device *hdev)
 856 {
 857         return hid_is_using_ll_driver(hdev, &usb_hid_driver);
 858 }
 859
 860 #define PM_HINT_FULLON  1<<5
 861 #define PM_HINT_NORMAL  1<<1
 862
 863 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */
 864 /* We ignore a few input applications that are not widely used */
 865 #define IS_INPUT_APPLICATION(a) \
 866                 (((a >= HID_UP_GENDESK) && (a <= HID_GD_MULTIAXIS)) \
 867                 || ((a >= HID_DG_PEN) && (a <= HID_DG_WHITEBOARD)) \
 868                 || (a == HID_GD_SYSTEM_CONTROL) || (a == HID_CP_CONSUMER_CONTROL) \
 869                 || (a == HID_GD_WIRELESS_RADIO_CTLS))
 870
 871 /* HID core API */
 872
 873 extern int hid_debug;
 874
 875 extern bool hid_ignore(struct hid_device *);
 876 extern int hid_add_device(struct hid_device *);
 877 extern void hid_destroy_device(struct hid_device *);
 878
 879 extern struct bus_type hid_bus_type;
 880
 881 extern int __must_check __hid_register_driver(struct hid_driver *,
 882                 struct module *, const char *mod_name);
 883
 884 /* use a define to avoid include chaining to get THIS_MODULE & friends */
 885 #define hid_register_driver(driver) \
 886         __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
 887
 888 extern void hid_unregister_driver(struct hid_driver *);
 889
 890 /**
 891  * module_hid_driver() - Helper macro for registering a HID driver
 892  * @__hid_driver: hid_driver struct
 893  *
 894  * Helper macro for HID drivers which do not do anything special in module
 895  * init/exit. This eliminates a lot of boilerplate. Each module may only
 896  * use this macro once, and calling it replaces module_init() and module_exit()
 897  */
 898 #define module_hid_driver(__hid_driver) \
 899         module_driver(__hid_driver, hid_register_driver, \
 900                       hid_unregister_driver)
 901
 902 extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
 903 extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report);
 904 extern int hidinput_connect(struct hid_device *hid, unsigned int force);
 905 extern void hidinput_disconnect(struct hid_device *);
 906
 907 int hid_set_field(struct hid_field *, unsigned, __s32);
 908 int hid_input_report(struct hid_device *, int type, u8 *, u32, int);
 909 struct hid_field *hidinput_get_led_field(struct hid_device *hid);
 910 unsigned int hidinput_count_leds(struct hid_device *hid);
 911 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code);
 912 void hid_output_report(struct hid_report *report, __u8 *data);
 913 int __hid_request(struct hid_device *hid, struct hid_report *rep, int reqtype);
 914 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags);
 915 struct hid_device *hid_allocate_device(void);
 916 struct hid_report *hid_register_report(struct hid_device *device,
 917                                        unsigned int type, unsigned int id,
 918                                        unsigned int application);
 919 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size);
 920 struct hid_report *hid_validate_values(struct hid_device *hid,
 921                                        unsigned int type, unsigned int id,
 922                                        unsigned int field_index,
 923                                        unsigned int report_counts);
 924
 925 void hid_setup_resolution_multiplier(struct hid_device *hid);
 926 int hid_open_report(struct hid_device *device);
 927 int hid_check_keys_pressed(struct hid_device *hid);
 928 int hid_connect(struct hid_device *hid, unsigned int connect_mask);
 929 void hid_disconnect(struct hid_device *hid);
 930 bool hid_match_one_id(const struct hid_device *hdev,
 931                       const struct hid_device_id *id);
 932 const struct hid_device_id *hid_match_id(const struct hid_device *hdev,
 933                                          const struct hid_device_id *id);
 934 const struct hid_device_id *hid_match_device(struct hid_device *hdev,
 935                                              struct hid_driver *hdrv);
 936 bool hid_compare_device_paths(struct hid_device *hdev_a,
 937                               struct hid_device *hdev_b, char separator);
 938 s32 hid_snto32(__u32 value, unsigned n);
 939 __u32 hid_field_extract(const struct hid_device *hid, __u8 *report,
 940                      unsigned offset, unsigned n);
 941
 942 #ifdef CONFIG_PM
 943 int hid_driver_suspend(struct hid_device *hdev, pm_message_t state);
 944 int hid_driver_reset_resume(struct hid_device *hdev);
 945 int hid_driver_resume(struct hid_device *hdev);
 946 #else
 947 static inline int hid_driver_suspend(struct hid_device *hdev, pm_message_t state) { return 0; }
 948 static inline int hid_driver_reset_resume(struct hid_device *hdev) { return 0; }
 949 static inline int hid_driver_resume(struct hid_device *hdev) { return 0; }
 950 #endif
 951
 952 /**
 953  * hid_device_io_start - enable HID input during probe, remove
 954  *
 955  * @hid: the device
 956  *
 957  * This should only be called during probe or remove and only be
 958  * called by the thread calling probe or remove. It will allow
 959  * incoming packets to be delivered to the driver.
 960  */
 961 static inline void hid_device_io_start(struct hid_device *hid) {
 962         if (hid->io_started) {
 963                 dev_warn(&hid->dev, "io already started\n");
 964                 return;
 965         }
 966         hid->io_started = true;
 967         up(&hid->driver_input_lock);
 968 }
 969
 970 /**
 971  * hid_device_io_stop - disable HID input during probe, remove
 972  *
 973  * @hid: the device
 974  *
 975  * Should only be called after hid_device_io_start. It will prevent
 976  * incoming packets from going to the driver for the duration of
 977  * probe, remove. If called during probe, packets will still go to the
 978  * driver after probe is complete. This function should only be called
 979  * by the thread calling probe or remove.
 980  */
 981 static inline void hid_device_io_stop(struct hid_device *hid) {
 982         if (!hid->io_started) {
 983                 dev_warn(&hid->dev, "io already stopped\n");
 984                 return;
 985         }
 986         hid->io_started = false;
 987         down(&hid->driver_input_lock);
 988 }
 989
 990 /**
 991  * hid_map_usage - map usage input bits
 992  *
 993  * @hidinput: hidinput which we are interested in
 994  * @usage: usage to fill in
 995  * @bit: pointer to input->{}bit (out parameter)
 996  * @max: maximal valid usage->code to consider later (out parameter)
 997  * @type: input event type (EV_KEY, EV_REL, ...)
 998  * @c: code which corresponds to this usage and type
 999  *
1000  * The value pointed to by @bit will be set to NULL if either @type is
1001  * an unhandled event type, or if @c is out of range for @type. This
1002  * can be used as an error condition.
1003  */
1004 static inline void hid_map_usage(struct hid_input *hidinput,
1005                 struct hid_usage *usage, unsigned long **bit, int *max,
1006                 __u8 type, unsigned int c)
1007 {
1008         struct input_dev *input = hidinput->input;
1009         unsigned long *bmap = NULL;
1010         unsigned int limit = 0;
1011
1012         switch (type) {
1013         case EV_ABS:
1014                 bmap = input->absbit;
1015                 limit = ABS_MAX;
1016                 break;
1017         case EV_REL:
1018                 bmap = input->relbit;
1019                 limit = REL_MAX;
1020                 break;
1021         case EV_KEY:
1022                 bmap = input->keybit;
1023                 limit = KEY_MAX;
1024                 break;
1025         case EV_LED:
1026                 bmap = input->ledbit;
1027                 limit = LED_MAX;
1028                 break;
1029         case EV_MSC:
1030                 bmap = input->mscbit;
1031                 limit = MSC_MAX;
1032                 break;
1033         }
1034
1035         if (unlikely(c > limit || !bmap)) {
1036                 pr_warn_ratelimited("%s: Invalid code %d type %d\n",
1037                                     input->name, c, type);
1038                 *bit = NULL;
1039                 return;
1040         }
1041
1042         usage->type = type;
1043         usage->code = c;
1044         *max = limit;
1045         *bit = bmap;
1046 }
1047
1048 /**
1049  * hid_map_usage_clear - map usage input bits and clear the input bit
1050  *
1051  * @hidinput: hidinput which we are interested in
1052  * @usage: usage to fill in
1053  * @bit: pointer to input->{}bit (out parameter)
1054  * @max: maximal valid usage->code to consider later (out parameter)
1055  * @type: input event type (EV_KEY, EV_REL, ...)
1056  * @c: code which corresponds to this usage and type
1057  *
1058  * The same as hid_map_usage, except the @c bit is also cleared in supported
1059  * bits (@bit).
1060  */
1061 static inline void hid_map_usage_clear(struct hid_input *hidinput,
1062                 struct hid_usage *usage, unsigned long **bit, int *max,
1063                 __u8 type, __u16 c)
1064 {
1065         hid_map_usage(hidinput, usage, bit, max, type, c);
1066         if (*bit)
1067                 clear_bit(usage->code, *bit);
1068 }
1069
1070 /**
1071  * hid_parse - parse HW reports
1072  *
1073  * @hdev: hid device
1074  *
1075  * Call this from probe after you set up the device (if needed). Your
1076  * report_fixup will be called (if non-NULL) after reading raw report from
1077  * device before passing it to hid layer for real parsing.
1078  */
1079 static inline int __must_check hid_parse(struct hid_device *hdev)
1080 {
1081         return hid_open_report(hdev);
1082 }
1083
1084 int __must_check hid_hw_start(struct hid_device *hdev,
1085                               unsigned int connect_mask);
1086 void hid_hw_stop(struct hid_device *hdev);
1087 int __must_check hid_hw_open(struct hid_device *hdev);
1088 void hid_hw_close(struct hid_device *hdev);
1089 void hid_hw_request(struct hid_device *hdev,
1090                     struct hid_report *report, int reqtype);
1091 int hid_hw_raw_request(struct hid_device *hdev,
1092                        unsigned char reportnum, __u8 *buf,
1093                        size_t len, unsigned char rtype, int reqtype);
1094 int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, size_t len);
1095
1096 /**
1097  * hid_hw_power - requests underlying HW to go into given power mode
1098  *
1099  * @hdev: hid device
1100  * @level: requested power level (one of %PM_HINT_* defines)
1101  *
1102  * This function requests underlying hardware to enter requested power
1103  * mode.
1104  */
1105
1106 static inline int hid_hw_power(struct hid_device *hdev, int level)
1107 {
1108         return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0;
1109 }
1110
1111
1112 /**
1113  * hid_hw_idle - send idle request to device
1114  *
1115  * @hdev: hid device
1116  * @report: report to control
1117  * @idle: idle state
1118  * @reqtype: hid request type
1119  */
1120 static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle,
1121                 int reqtype)
1122 {
1123         if (hdev->ll_driver->idle)
1124                 return hdev->ll_driver->idle(hdev, report, idle, reqtype);
1125
1126         return 0;
1127 }
1128
1129 /**
1130  * hid_hw_may_wakeup - return if the hid device may act as a wakeup source during system-suspend
1131  *
1132  * @hdev: hid device
1133  */
1134 static inline bool hid_hw_may_wakeup(struct hid_device *hdev)
1135 {
1136         if (hdev->ll_driver->may_wakeup)
1137                 return hdev->ll_driver->may_wakeup(hdev);
1138
1139         if (hdev->dev.parent)
1140                 return device_may_wakeup(hdev->dev.parent);
1141
1142         return false;
1143 }
1144
1145 /**
1146  * hid_hw_wait - wait for buffered io to complete
1147  *
1148  * @hdev: hid device
1149  */
1150 static inline void hid_hw_wait(struct hid_device *hdev)
1151 {
1152         if (hdev->ll_driver->wait)
1153                 hdev->ll_driver->wait(hdev);
1154 }
1155
1156 /**
1157  * hid_report_len - calculate the report length
1158  *
1159  * @report: the report we want to know the length
1160  */
1161 static inline u32 hid_report_len(struct hid_report *report)
1162 {
1163         return DIV_ROUND_UP(report->size, 8) + (report->id > 0);
1164 }
1165
1166 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size,
1167                 int interrupt);
1168
1169 /* HID quirks API */
1170 unsigned long hid_lookup_quirk(const struct hid_device *hdev);
1171 int hid_quirks_init(char **quirks_param, __u16 bus, int count);
1172 void hid_quirks_exit(__u16 bus);
1173
1174 #ifdef CONFIG_HID_PID
1175 int hid_pidff_init(struct hid_device *hid);
1176 #else
1177 #define hid_pidff_init NULL
1178 #endif
1179
1180 #define dbg_hid(fmt, ...)                                               \
1181 do {                                                                    \
1182         if (hid_debug)                                                  \
1183                 printk(KERN_DEBUG "%s: " fmt, __FILE__, ##__VA_ARGS__); \
1184 } while (0)
1185
1186 #define hid_err(hid, fmt, ...)                          \
1187         dev_err(&(hid)->dev, fmt, ##__VA_ARGS__)
1188 #define hid_notice(hid, fmt, ...)                       \
1189         dev_notice(&(hid)->dev, fmt, ##__VA_ARGS__)
1190 #define hid_warn(hid, fmt, ...)                         \
1191         dev_warn(&(hid)->dev, fmt, ##__VA_ARGS__)
1192 #define hid_info(hid, fmt, ...)                         \
1193         dev_info(&(hid)->dev, fmt, ##__VA_ARGS__)
1194 #define hid_dbg(hid, fmt, ...)                          \
1195         dev_dbg(&(hid)->dev, fmt, ##__VA_ARGS__)
1196
1197 #define hid_err_once(hid, fmt, ...)                     \
1198         dev_err_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1199 #define hid_notice_once(hid, fmt, ...)                  \
1200         dev_notice_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1201 #define hid_warn_once(hid, fmt, ...)                    \
1202         dev_warn_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1203 #define hid_info_once(hid, fmt, ...)                    \
1204         dev_info_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1205 #define hid_dbg_once(hid, fmt, ...)                     \
1206         dev_dbg_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1207
1208 #endif