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
 106 /*
 107  * HID report descriptor global item tags
 108  */
 109
 110 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE          0
 111 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM     1
 112 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM     2
 113 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM    3
 114 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM    4
 115 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT       5
 116 #define HID_GLOBAL_ITEM_TAG_UNIT                6
 117 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE         7
 118 #define HID_GLOBAL_ITEM_TAG_REPORT_ID           8
 119 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT        9
 120 #define HID_GLOBAL_ITEM_TAG_PUSH                10
 121 #define HID_GLOBAL_ITEM_TAG_POP                 11
 122
 123 /*
 124  * HID report descriptor local item tags
 125  */
 126
 127 #define HID_LOCAL_ITEM_TAG_USAGE                0
 128 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM        1
 129 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM        2
 130 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX     3
 131 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM   4
 132 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM   5
 133 #define HID_LOCAL_ITEM_TAG_STRING_INDEX         7
 134 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM       8
 135 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM       9
 136 #define HID_LOCAL_ITEM_TAG_DELIMITER            10
 137
 138 /*
 139  * HID usage tables
 140  */
 141
 142 #define HID_USAGE_PAGE          0xffff0000
 143
 144 #define HID_UP_UNDEFINED        0x00000000
 145 #define HID_UP_GENDESK          0x00010000
 146 #define HID_UP_SIMULATION       0x00020000
 147 #define HID_UP_GENDEVCTRLS      0x00060000
 148 #define HID_UP_KEYBOARD         0x00070000
 149 #define HID_UP_LED              0x00080000
 150 #define HID_UP_BUTTON           0x00090000
 151 #define HID_UP_ORDINAL          0x000a0000
 152 #define HID_UP_TELEPHONY        0x000b0000
 153 #define HID_UP_CONSUMER         0x000c0000
 154 #define HID_UP_DIGITIZER        0x000d0000
 155 #define HID_UP_PID              0x000f0000
 156 #define HID_UP_BATTERY          0x00850000
 157 #define HID_UP_HPVENDOR         0xff7f0000
 158 #define HID_UP_HPVENDOR2        0xff010000
 159 #define HID_UP_MSVENDOR         0xff000000
 160 #define HID_UP_CUSTOM           0x00ff0000
 161 #define HID_UP_LOGIVENDOR       0xffbc0000
 162 #define HID_UP_LOGIVENDOR2   0xff090000
 163 #define HID_UP_LOGIVENDOR3   0xff430000
 164 #define HID_UP_LNVENDOR         0xffa00000
 165 #define HID_UP_SENSOR           0x00200000
 166 #define HID_UP_ASUSVENDOR       0xff310000
 167 #define HID_UP_GOOGLEVENDOR     0xffd10000
 168
 169 #define HID_USAGE               0x0000ffff
 170
 171 #define HID_GD_POINTER          0x00010001
 172 #define HID_GD_MOUSE            0x00010002
 173 #define HID_GD_JOYSTICK         0x00010004
 174 #define HID_GD_GAMEPAD          0x00010005
 175 #define HID_GD_KEYBOARD         0x00010006
 176 #define HID_GD_KEYPAD           0x00010007
 177 #define HID_GD_MULTIAXIS        0x00010008
 178 /*
 179  * Microsoft Win8 Wireless Radio Controls extensions CA, see:
 180  * http://www.usb.org/developers/hidpage/HUTRR40RadioHIDUsagesFinal.pdf
 181  */
 182 #define HID_GD_WIRELESS_RADIO_CTLS      0x0001000c
 183 /*
 184  * System Multi-Axis, see:
 185  * http://www.usb.org/developers/hidpage/HUTRR62_-_Generic_Desktop_CA_for_System_Multi-Axis_Controllers.txt
 186  */
 187 #define HID_GD_SYSTEM_MULTIAXIS 0x0001000e
 188
 189 #define HID_GD_X                0x00010030
 190 #define HID_GD_Y                0x00010031
 191 #define HID_GD_Z                0x00010032
 192 #define HID_GD_RX               0x00010033
 193 #define HID_GD_RY               0x00010034
 194 #define HID_GD_RZ               0x00010035
 195 #define HID_GD_SLIDER           0x00010036
 196 #define HID_GD_DIAL             0x00010037
 197 #define HID_GD_WHEEL            0x00010038
 198 #define HID_GD_HATSWITCH        0x00010039
 199 #define HID_GD_BUFFER           0x0001003a
 200 #define HID_GD_BYTECOUNT        0x0001003b
 201 #define HID_GD_MOTION           0x0001003c
 202 #define HID_GD_START            0x0001003d
 203 #define HID_GD_SELECT           0x0001003e
 204 #define HID_GD_VX               0x00010040
 205 #define HID_GD_VY               0x00010041
 206 #define HID_GD_VZ               0x00010042
 207 #define HID_GD_VBRX             0x00010043
 208 #define HID_GD_VBRY             0x00010044
 209 #define HID_GD_VBRZ             0x00010045
 210 #define HID_GD_VNO              0x00010046
 211 #define HID_GD_FEATURE          0x00010047
 212 #define HID_GD_RESOLUTION_MULTIPLIER    0x00010048
 213 #define HID_GD_SYSTEM_CONTROL   0x00010080
 214 #define HID_GD_UP               0x00010090
 215 #define HID_GD_DOWN             0x00010091
 216 #define HID_GD_RIGHT            0x00010092
 217 #define HID_GD_LEFT             0x00010093
 218 /* Microsoft Win8 Wireless Radio Controls CA usage codes */
 219 #define HID_GD_RFKILL_BTN       0x000100c6
 220 #define HID_GD_RFKILL_LED       0x000100c7
 221 #define HID_GD_RFKILL_SWITCH    0x000100c8
 222
 223 #define HID_DC_BATTERYSTRENGTH  0x00060020
 224
 225 #define HID_CP_CONSUMER_CONTROL 0x000c0001
 226 #define HID_CP_AC_PAN           0x000c0238
 227
 228 #define HID_DG_DIGITIZER        0x000d0001
 229 #define HID_DG_PEN              0x000d0002
 230 #define HID_DG_LIGHTPEN         0x000d0003
 231 #define HID_DG_TOUCHSCREEN      0x000d0004
 232 #define HID_DG_TOUCHPAD         0x000d0005
 233 #define HID_DG_WHITEBOARD       0x000d0006
 234 #define HID_DG_STYLUS           0x000d0020
 235 #define HID_DG_PUCK             0x000d0021
 236 #define HID_DG_FINGER           0x000d0022
 237 #define HID_DG_TIPPRESSURE      0x000d0030
 238 #define HID_DG_BARRELPRESSURE   0x000d0031
 239 #define HID_DG_INRANGE          0x000d0032
 240 #define HID_DG_TOUCH            0x000d0033
 241 #define HID_DG_UNTOUCH          0x000d0034
 242 #define HID_DG_TAP              0x000d0035
 243 #define HID_DG_TABLETFUNCTIONKEY        0x000d0039
 244 #define HID_DG_PROGRAMCHANGEKEY 0x000d003a
 245 #define HID_DG_BATTERYSTRENGTH  0x000d003b
 246 #define HID_DG_INVERT           0x000d003c
 247 #define HID_DG_TILT_X           0x000d003d
 248 #define HID_DG_TILT_Y           0x000d003e
 249 #define HID_DG_TWIST            0x000d0041
 250 #define HID_DG_TIPSWITCH        0x000d0042
 251 #define HID_DG_TIPSWITCH2       0x000d0043
 252 #define HID_DG_BARRELSWITCH     0x000d0044
 253 #define HID_DG_ERASER           0x000d0045
 254 #define HID_DG_TABLETPICK       0x000d0046
 255
 256 #define HID_CP_CONSUMERCONTROL  0x000c0001
 257 #define HID_CP_NUMERICKEYPAD    0x000c0002
 258 #define HID_CP_PROGRAMMABLEBUTTONS      0x000c0003
 259 #define HID_CP_MICROPHONE       0x000c0004
 260 #define HID_CP_HEADPHONE        0x000c0005
 261 #define HID_CP_GRAPHICEQUALIZER 0x000c0006
 262 #define HID_CP_FUNCTIONBUTTONS  0x000c0036
 263 #define HID_CP_SELECTION        0x000c0080
 264 #define HID_CP_MEDIASELECTION   0x000c0087
 265 #define HID_CP_SELECTDISC       0x000c00ba
 266 #define HID_CP_PLAYBACKSPEED    0x000c00f1
 267 #define HID_CP_PROXIMITY        0x000c0109
 268 #define HID_CP_SPEAKERSYSTEM    0x000c0160
 269 #define HID_CP_CHANNELLEFT      0x000c0161
 270 #define HID_CP_CHANNELRIGHT     0x000c0162
 271 #define HID_CP_CHANNELCENTER    0x000c0163
 272 #define HID_CP_CHANNELFRONT     0x000c0164
 273 #define HID_CP_CHANNELCENTERFRONT       0x000c0165
 274 #define HID_CP_CHANNELSIDE      0x000c0166
 275 #define HID_CP_CHANNELSURROUND  0x000c0167
 276 #define HID_CP_CHANNELLOWFREQUENCYENHANCEMENT   0x000c0168
 277 #define HID_CP_CHANNELTOP       0x000c0169
 278 #define HID_CP_CHANNELUNKNOWN   0x000c016a
 279 #define HID_CP_APPLICATIONLAUNCHBUTTONS 0x000c0180
 280 #define HID_CP_GENERICGUIAPPLICATIONCONTROLS    0x000c0200
 281
 282 #define HID_DG_DEVICECONFIG     0x000d000e
 283 #define HID_DG_DEVICESETTINGS   0x000d0023
 284 #define HID_DG_AZIMUTH          0x000d003f
 285 #define HID_DG_CONFIDENCE       0x000d0047
 286 #define HID_DG_WIDTH            0x000d0048
 287 #define HID_DG_HEIGHT           0x000d0049
 288 #define HID_DG_CONTACTID        0x000d0051
 289 #define HID_DG_INPUTMODE        0x000d0052
 290 #define HID_DG_DEVICEINDEX      0x000d0053
 291 #define HID_DG_CONTACTCOUNT     0x000d0054
 292 #define HID_DG_CONTACTMAX       0x000d0055
 293 #define HID_DG_SCANTIME         0x000d0056
 294 #define HID_DG_SURFACESWITCH    0x000d0057
 295 #define HID_DG_BUTTONSWITCH     0x000d0058
 296 #define HID_DG_BUTTONTYPE       0x000d0059
 297 #define HID_DG_BARRELSWITCH2    0x000d005a
 298 #define HID_DG_TOOLSERIALNUMBER 0x000d005b
 299 #define HID_DG_LATENCYMODE      0x000d0060
 300
 301 #define HID_BAT_ABSOLUTESTATEOFCHARGE   0x00850065
 302
 303 #define HID_VD_ASUS_CUSTOM_MEDIA_KEYS   0xff310076
 304 /*
 305  * HID report types --- Ouch! HID spec says 1 2 3!
 306  */
 307
 308 #define HID_INPUT_REPORT        0
 309 #define HID_OUTPUT_REPORT       1
 310 #define HID_FEATURE_REPORT      2
 311
 312 #define HID_REPORT_TYPES        3
 313
 314 /*
 315  * HID connect requests
 316  */
 317
 318 #define HID_CONNECT_HIDINPUT            BIT(0)
 319 #define HID_CONNECT_HIDINPUT_FORCE      BIT(1)
 320 #define HID_CONNECT_HIDRAW              BIT(2)
 321 #define HID_CONNECT_HIDDEV              BIT(3)
 322 #define HID_CONNECT_HIDDEV_FORCE        BIT(4)
 323 #define HID_CONNECT_FF                  BIT(5)
 324 #define HID_CONNECT_DRIVER              BIT(6)
 325 #define HID_CONNECT_DEFAULT     (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \
 326                 HID_CONNECT_HIDDEV|HID_CONNECT_FF)
 327
 328 /*
 329  * HID device quirks.
 330  */
 331
 332 /*
 333  * Increase this if you need to configure more HID quirks at module load time
 334  */
 335 #define MAX_USBHID_BOOT_QUIRKS 4
 336
 337 #define HID_QUIRK_INVERT                        BIT(0)
 338 #define HID_QUIRK_NOTOUCH                       BIT(1)
 339 #define HID_QUIRK_IGNORE                        BIT(2)
 340 #define HID_QUIRK_NOGET                         BIT(3)
 341 #define HID_QUIRK_HIDDEV_FORCE                  BIT(4)
 342 #define HID_QUIRK_BADPAD                        BIT(5)
 343 #define HID_QUIRK_MULTI_INPUT                   BIT(6)
 344 #define HID_QUIRK_HIDINPUT_FORCE                BIT(7)
 345 /* BIT(8) reserved for backward compatibility, was HID_QUIRK_NO_EMPTY_INPUT */
 346 /* BIT(9) reserved for backward compatibility, was NO_INIT_INPUT_REPORTS */
 347 #define HID_QUIRK_ALWAYS_POLL                   BIT(10)
 348 #define HID_QUIRK_INPUT_PER_APP                 BIT(11)
 349 #define HID_QUIRK_SKIP_OUTPUT_REPORTS           BIT(16)
 350 #define HID_QUIRK_SKIP_OUTPUT_REPORT_ID         BIT(17)
 351 #define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP  BIT(18)
 352 #define HID_QUIRK_HAVE_SPECIAL_DRIVER           BIT(19)
 353 #define HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE  BIT(20)
 354 #define HID_QUIRK_FULLSPEED_INTERVAL            BIT(28)
 355 #define HID_QUIRK_NO_INIT_REPORTS               BIT(29)
 356 #define HID_QUIRK_NO_IGNORE                     BIT(30)
 357 #define HID_QUIRK_NO_INPUT_SYNC                 BIT(31)
 358
 359 /*
 360  * HID device groups
 361  *
 362  * Note: HID_GROUP_ANY is declared in linux/mod_devicetable.h
 363  * and has a value of 0x0000
 364  */
 365 #define HID_GROUP_GENERIC                       0x0001
 366 #define HID_GROUP_MULTITOUCH                    0x0002
 367 #define HID_GROUP_SENSOR_HUB                    0x0003
 368 #define HID_GROUP_MULTITOUCH_WIN_8              0x0004
 369
 370 /*
 371  * Vendor specific HID device groups
 372  */
 373 #define HID_GROUP_RMI                           0x0100
 374 #define HID_GROUP_WACOM                         0x0101
 375 #define HID_GROUP_LOGITECH_DJ_DEVICE            0x0102
 376 #define HID_GROUP_STEAM                         0x0103
 377 #define HID_GROUP_LOGITECH_27MHZ_DEVICE         0x0104
 378 #define HID_GROUP_VIVALDI                       0x0105
 379
 380 /*
 381  * HID protocol status
 382  */
 383 #define HID_REPORT_PROTOCOL     1
 384 #define HID_BOOT_PROTOCOL       0
 385
 386 /*
 387  * This is the global environment of the parser. This information is
 388  * persistent for main-items. The global environment can be saved and
 389  * restored with PUSH/POP statements.
 390  */
 391
 392 struct hid_global {
 393         unsigned usage_page;
 394         __s32    logical_minimum;
 395         __s32    logical_maximum;
 396         __s32    physical_minimum;
 397         __s32    physical_maximum;
 398         __s32    unit_exponent;
 399         unsigned unit;
 400         unsigned report_id;
 401         unsigned report_size;
 402         unsigned report_count;
 403 };
 404
 405 /*
 406  * This is the local environment. It is persistent up the next main-item.
 407  */
 408
 409 #define HID_MAX_USAGES                  12288
 410 #define HID_DEFAULT_NUM_COLLECTIONS     16
 411
 412 struct hid_local {
 413         unsigned usage[HID_MAX_USAGES]; /* usage array */
 414         u8 usage_size[HID_MAX_USAGES]; /* usage size array */
 415         unsigned collection_index[HID_MAX_USAGES]; /* collection index array */
 416         unsigned usage_index;
 417         unsigned usage_minimum;
 418         unsigned delimiter_depth;
 419         unsigned delimiter_branch;
 420 };
 421
 422 /*
 423  * This is the collection stack. We climb up the stack to determine
 424  * application and function of each field.
 425  */
 426
 427 struct hid_collection {
 428         int parent_idx; /* device->collection */
 429         unsigned type;
 430         unsigned usage;
 431         unsigned level;
 432 };
 433
 434 struct hid_usage {
 435         unsigned  hid;                  /* hid usage code */
 436         unsigned  collection_index;     /* index into collection array */
 437         unsigned  usage_index;          /* index into usage array */
 438         __s8      resolution_multiplier;/* Effective Resolution Multiplier
 439                                            (HUT v1.12, 4.3.1), default: 1 */
 440         /* hidinput data */
 441         __s8      wheel_factor;         /* 120/resolution_multiplier */
 442         __u16     code;                 /* input driver code */
 443         __u8      type;                 /* input driver type */
 444         __s8      hat_min;              /* hat switch fun */
 445         __s8      hat_max;              /* ditto */
 446         __s8      hat_dir;              /* ditto */
 447         __s16     wheel_accumulated;    /* hi-res wheel */
 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     16384           /* 16kb */
 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         ktime_t battery_ratelimit_time;
 592 #endif
 593
 594         unsigned long status;                                           /* see STAT flags above */
 595         unsigned claimed;                                               /* Claimed by hidinput, hiddev? */
 596         unsigned quirks;                                                /* Various quirks the device can pull on us */
 597         bool io_started;                                                /* If IO has started */
 598
 599         struct list_head inputs;                                        /* The list of inputs */
 600         void *hiddev;                                                   /* The hiddev structure */
 601         void *hidraw;
 602
 603         char name[128];                                                 /* Device name */
 604         char phys[64];                                                  /* Device physical location */
 605         char uniq[64];                                                  /* Device unique identifier (serial #) */
 606
 607         void *driver_data;
 608
 609         /* temporary hid_ff handling (until moved to the drivers) */
 610         int (*ff_init)(struct hid_device *);
 611
 612         /* hiddev event handler */
 613         int (*hiddev_connect)(struct hid_device *, unsigned int);
 614         void (*hiddev_disconnect)(struct hid_device *);
 615         void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field,
 616                                   struct hid_usage *, __s32);
 617         void (*hiddev_report_event) (struct hid_device *, struct hid_report *);
 618
 619         /* debugging support via debugfs */
 620         unsigned short debug;
 621         struct dentry *debug_dir;
 622         struct dentry *debug_rdesc;
 623         struct dentry *debug_events;
 624         struct list_head debug_list;
 625         spinlock_t  debug_list_lock;
 626         wait_queue_head_t debug_wait;
 627 };
 628
 629 #define to_hid_device(pdev) \
 630         container_of(pdev, struct hid_device, dev)
 631
 632 static inline void *hid_get_drvdata(struct hid_device *hdev)
 633 {
 634         return dev_get_drvdata(&hdev->dev);
 635 }
 636
 637 static inline void hid_set_drvdata(struct hid_device *hdev, void *data)
 638 {
 639         dev_set_drvdata(&hdev->dev, data);
 640 }
 641
 642 #define HID_GLOBAL_STACK_SIZE 4
 643 #define HID_COLLECTION_STACK_SIZE 4
 644
 645 #define HID_SCAN_FLAG_MT_WIN_8                  BIT(0)
 646 #define HID_SCAN_FLAG_VENDOR_SPECIFIC           BIT(1)
 647 #define HID_SCAN_FLAG_GD_POINTER                BIT(2)
 648
 649 struct hid_parser {
 650         struct hid_global     global;
 651         struct hid_global     global_stack[HID_GLOBAL_STACK_SIZE];
 652         unsigned int          global_stack_ptr;
 653         struct hid_local      local;
 654         unsigned int         *collection_stack;
 655         unsigned int          collection_stack_ptr;
 656         unsigned int          collection_stack_size;
 657         struct hid_device    *device;
 658         unsigned int          scan_flags;
 659 };
 660
 661 struct hid_class_descriptor {
 662         __u8  bDescriptorType;
 663         __le16 wDescriptorLength;
 664 } __attribute__ ((packed));
 665
 666 struct hid_descriptor {
 667         __u8  bLength;
 668         __u8  bDescriptorType;
 669         __le16 bcdHID;
 670         __u8  bCountryCode;
 671         __u8  bNumDescriptors;
 672
 673         struct hid_class_descriptor desc[1];
 674 } __attribute__ ((packed));
 675
 676 #define HID_DEVICE(b, g, ven, prod)                                     \
 677         .bus = (b), .group = (g), .vendor = (ven), .product = (prod)
 678 #define HID_USB_DEVICE(ven, prod)                               \
 679         .bus = BUS_USB, .vendor = (ven), .product = (prod)
 680 #define HID_BLUETOOTH_DEVICE(ven, prod)                                 \
 681         .bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod)
 682 #define HID_I2C_DEVICE(ven, prod)                               \
 683         .bus = BUS_I2C, .vendor = (ven), .product = (prod)
 684
 685 #define HID_REPORT_ID(rep) \
 686         .report_type = (rep)
 687 #define HID_USAGE_ID(uhid, utype, ucode) \
 688         .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode)
 689 /* we don't want to catch types and codes equal to 0 */
 690 #define HID_TERMINATOR          (HID_ANY_ID - 1)
 691
 692 struct hid_report_id {
 693         __u32 report_type;
 694 };
 695 struct hid_usage_id {
 696         __u32 usage_hid;
 697         __u32 usage_type;
 698         __u32 usage_code;
 699 };
 700
 701 /**
 702  * struct hid_driver
 703  * @name: driver name (e.g. "Footech_bar-wheel")
 704  * @id_table: which devices is this driver for (must be non-NULL for probe
 705  *            to be called)
 706  * @dyn_list: list of dynamically added device ids
 707  * @dyn_lock: lock protecting @dyn_list
 708  * @match: check if the given device is handled by this driver
 709  * @probe: new device inserted
 710  * @remove: device removed (NULL if not a hot-plug capable driver)
 711  * @report_table: on which reports to call raw_event (NULL means all)
 712  * @raw_event: if report in report_table, this hook is called (NULL means nop)
 713  * @usage_table: on which events to call event (NULL means all)
 714  * @event: if usage in usage_table, this hook is called (NULL means nop)
 715  * @report: this hook is called after parsing a report (NULL means nop)
 716  * @report_fixup: called before report descriptor parsing (NULL means nop)
 717  * @input_mapping: invoked on input registering before mapping an usage
 718  * @input_mapped: invoked on input registering after mapping an usage
 719  * @input_configured: invoked just before the device is registered
 720  * @feature_mapping: invoked on feature registering
 721  * @suspend: invoked on suspend (NULL means nop)
 722  * @resume: invoked on resume if device was not reset (NULL means nop)
 723  * @reset_resume: invoked on resume if device was reset (NULL means nop)
 724  *
 725  * probe should return -errno on error, or 0 on success. During probe,
 726  * input will not be passed to raw_event unless hid_device_io_start is
 727  * called.
 728  *
 729  * raw_event and event should return negative on error, any other value will
 730  * pass the event on to .event() typically return 0 for success.
 731  *
 732  * input_mapping shall return a negative value to completely ignore this usage
 733  * (e.g. doubled or invalid usage), zero to continue with parsing of this
 734  * usage by generic code (no special handling needed) or positive to skip
 735  * generic parsing (needed special handling which was done in the hook already)
 736  * input_mapped shall return negative to inform the layer that this usage
 737  * should not be considered for further processing or zero to notify that
 738  * no processing was performed and should be done in a generic manner
 739  * Both these functions may be NULL which means the same behavior as returning
 740  * zero from them.
 741  */
 742 struct hid_driver {
 743         char *name;
 744         const struct hid_device_id *id_table;
 745
 746         struct list_head dyn_list;
 747         spinlock_t dyn_lock;
 748
 749         bool (*match)(struct hid_device *dev, bool ignore_special_driver);
 750         int (*probe)(struct hid_device *dev, const struct hid_device_id *id);
 751         void (*remove)(struct hid_device *dev);
 752
 753         const struct hid_report_id *report_table;
 754         int (*raw_event)(struct hid_device *hdev, struct hid_report *report,
 755                         u8 *data, int size);
 756         const struct hid_usage_id *usage_table;
 757         int (*event)(struct hid_device *hdev, struct hid_field *field,
 758                         struct hid_usage *usage, __s32 value);
 759         void (*report)(struct hid_device *hdev, struct hid_report *report);
 760
 761         __u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf,
 762                         unsigned int *size);
 763
 764         int (*input_mapping)(struct hid_device *hdev,
 765                         struct hid_input *hidinput, struct hid_field *field,
 766                         struct hid_usage *usage, unsigned long **bit, int *max);
 767         int (*input_mapped)(struct hid_device *hdev,
 768                         struct hid_input *hidinput, struct hid_field *field,
 769                         struct hid_usage *usage, unsigned long **bit, int *max);
 770         int (*input_configured)(struct hid_device *hdev,
 771                                 struct hid_input *hidinput);
 772         void (*feature_mapping)(struct hid_device *hdev,
 773                         struct hid_field *field,
 774                         struct hid_usage *usage);
 775 #ifdef CONFIG_PM
 776         int (*suspend)(struct hid_device *hdev, pm_message_t message);
 777         int (*resume)(struct hid_device *hdev);
 778         int (*reset_resume)(struct hid_device *hdev);
 779 #endif
 780 /* private: */
 781         struct device_driver driver;
 782 };
 783
 784 #define to_hid_driver(pdrv) \
 785         container_of(pdrv, struct hid_driver, driver)
 786
 787 /**
 788  * hid_ll_driver - low level driver callbacks
 789  * @start: called on probe to start the device
 790  * @stop: called on remove
 791  * @open: called by input layer on open
 792  * @close: called by input layer on close
 793  * @power: request underlying hardware to enter requested power mode
 794  * @parse: this method is called only once to parse the device data,
 795  *         shouldn't allocate anything to not leak memory
 796  * @request: send report request to device (e.g. feature report)
 797  * @wait: wait for buffered io to complete (send/recv reports)
 798  * @raw_request: send raw report request to device (e.g. feature report)
 799  * @output_report: send output report to device
 800  * @idle: send idle request to device
 801  */
 802 struct hid_ll_driver {
 803         int (*start)(struct hid_device *hdev);
 804         void (*stop)(struct hid_device *hdev);
 805
 806         int (*open)(struct hid_device *hdev);
 807         void (*close)(struct hid_device *hdev);
 808
 809         int (*power)(struct hid_device *hdev, int level);
 810
 811         int (*parse)(struct hid_device *hdev);
 812
 813         void (*request)(struct hid_device *hdev,
 814                         struct hid_report *report, int reqtype);
 815
 816         int (*wait)(struct hid_device *hdev);
 817
 818         int (*raw_request) (struct hid_device *hdev, unsigned char reportnum,
 819                             __u8 *buf, size_t len, unsigned char rtype,
 820                             int reqtype);
 821
 822         int (*output_report) (struct hid_device *hdev, __u8 *buf, size_t len);
 823
 824         int (*idle)(struct hid_device *hdev, int report, int idle, int reqtype);
 825 };
 826
 827 extern struct hid_ll_driver i2c_hid_ll_driver;
 828 extern struct hid_ll_driver hidp_hid_driver;
 829 extern struct hid_ll_driver uhid_hid_driver;
 830 extern struct hid_ll_driver usb_hid_driver;
 831
 832 static inline bool hid_is_using_ll_driver(struct hid_device *hdev,
 833                 struct hid_ll_driver *driver)
 834 {
 835         return hdev->ll_driver == driver;
 836 }
 837
 838 #define PM_HINT_FULLON  1<<5
 839 #define PM_HINT_NORMAL  1<<1
 840
 841 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */
 842 /* We ignore a few input applications that are not widely used */
 843 #define IS_INPUT_APPLICATION(a) \
 844                 (((a >= HID_UP_GENDESK) && (a <= HID_GD_MULTIAXIS)) \
 845                 || ((a >= HID_DG_PEN) && (a <= HID_DG_WHITEBOARD)) \
 846                 || (a == HID_GD_SYSTEM_CONTROL) || (a == HID_CP_CONSUMER_CONTROL) \
 847                 || (a == HID_GD_WIRELESS_RADIO_CTLS))
 848
 849 /* HID core API */
 850
 851 extern int hid_debug;
 852
 853 extern bool hid_ignore(struct hid_device *);
 854 extern int hid_add_device(struct hid_device *);
 855 extern void hid_destroy_device(struct hid_device *);
 856
 857 extern struct bus_type hid_bus_type;
 858
 859 extern int __must_check __hid_register_driver(struct hid_driver *,
 860                 struct module *, const char *mod_name);
 861
 862 /* use a define to avoid include chaining to get THIS_MODULE & friends */
 863 #define hid_register_driver(driver) \
 864         __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
 865
 866 extern void hid_unregister_driver(struct hid_driver *);
 867
 868 /**
 869  * module_hid_driver() - Helper macro for registering a HID driver
 870  * @__hid_driver: hid_driver struct
 871  *
 872  * Helper macro for HID drivers which do not do anything special in module
 873  * init/exit. This eliminates a lot of boilerplate. Each module may only
 874  * use this macro once, and calling it replaces module_init() and module_exit()
 875  */
 876 #define module_hid_driver(__hid_driver) \
 877         module_driver(__hid_driver, hid_register_driver, \
 878                       hid_unregister_driver)
 879
 880 extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
 881 extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report);
 882 extern int hidinput_connect(struct hid_device *hid, unsigned int force);
 883 extern void hidinput_disconnect(struct hid_device *);
 884
 885 int hid_set_field(struct hid_field *, unsigned, __s32);
 886 int hid_input_report(struct hid_device *, int type, u8 *, u32, int);
 887 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
 888 struct hid_field *hidinput_get_led_field(struct hid_device *hid);
 889 unsigned int hidinput_count_leds(struct hid_device *hid);
 890 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code);
 891 void hid_output_report(struct hid_report *report, __u8 *data);
 892 int __hid_request(struct hid_device *hid, struct hid_report *rep, int reqtype);
 893 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags);
 894 struct hid_device *hid_allocate_device(void);
 895 struct hid_report *hid_register_report(struct hid_device *device,
 896                                        unsigned int type, unsigned int id,
 897                                        unsigned int application);
 898 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size);
 899 struct hid_report *hid_validate_values(struct hid_device *hid,
 900                                        unsigned int type, unsigned int id,
 901                                        unsigned int field_index,
 902                                        unsigned int report_counts);
 903
 904 void hid_setup_resolution_multiplier(struct hid_device *hid);
 905 int hid_open_report(struct hid_device *device);
 906 int hid_check_keys_pressed(struct hid_device *hid);
 907 int hid_connect(struct hid_device *hid, unsigned int connect_mask);
 908 void hid_disconnect(struct hid_device *hid);
 909 bool hid_match_one_id(const struct hid_device *hdev,
 910                       const struct hid_device_id *id);
 911 const struct hid_device_id *hid_match_id(const struct hid_device *hdev,
 912                                          const struct hid_device_id *id);
 913 const struct hid_device_id *hid_match_device(struct hid_device *hdev,
 914                                              struct hid_driver *hdrv);
 915 bool hid_compare_device_paths(struct hid_device *hdev_a,
 916                               struct hid_device *hdev_b, char separator);
 917 s32 hid_snto32(__u32 value, unsigned n);
 918 __u32 hid_field_extract(const struct hid_device *hid, __u8 *report,
 919                      unsigned offset, unsigned n);
 920
 921 /**
 922  * hid_device_io_start - enable HID input during probe, remove
 923  *
 924  * @hid: the device
 925  *
 926  * This should only be called during probe or remove and only be
 927  * called by the thread calling probe or remove. It will allow
 928  * incoming packets to be delivered to the driver.
 929  */
 930 static inline void hid_device_io_start(struct hid_device *hid) {
 931         if (hid->io_started) {
 932                 dev_warn(&hid->dev, "io already started\n");
 933                 return;
 934         }
 935         hid->io_started = true;
 936         up(&hid->driver_input_lock);
 937 }
 938
 939 /**
 940  * hid_device_io_stop - disable HID input during probe, remove
 941  *
 942  * @hid: the device
 943  *
 944  * Should only be called after hid_device_io_start. It will prevent
 945  * incoming packets from going to the driver for the duration of
 946  * probe, remove. If called during probe, packets will still go to the
 947  * driver after probe is complete. This function should only be called
 948  * by the thread calling probe or remove.
 949  */
 950 static inline void hid_device_io_stop(struct hid_device *hid) {
 951         if (!hid->io_started) {
 952                 dev_warn(&hid->dev, "io already stopped\n");
 953                 return;
 954         }
 955         hid->io_started = false;
 956         down(&hid->driver_input_lock);
 957 }
 958
 959 /**
 960  * hid_map_usage - map usage input bits
 961  *
 962  * @hidinput: hidinput which we are interested in
 963  * @usage: usage to fill in
 964  * @bit: pointer to input->{}bit (out parameter)
 965  * @max: maximal valid usage->code to consider later (out parameter)
 966  * @type: input event type (EV_KEY, EV_REL, ...)
 967  * @c: code which corresponds to this usage and type
 968  *
 969  * The value pointed to by @bit will be set to NULL if either @type is
 970  * an unhandled event type, or if @c is out of range for @type. This
 971  * can be used as an error condition.
 972  */
 973 static inline void hid_map_usage(struct hid_input *hidinput,
 974                 struct hid_usage *usage, unsigned long **bit, int *max,
 975                 __u8 type, unsigned int c)
 976 {
 977         struct input_dev *input = hidinput->input;
 978         unsigned long *bmap = NULL;
 979         unsigned int limit = 0;
 980
 981         switch (type) {
 982         case EV_ABS:
 983                 bmap = input->absbit;
 984                 limit = ABS_MAX;
 985                 break;
 986         case EV_REL:
 987                 bmap = input->relbit;
 988                 limit = REL_MAX;
 989                 break;
 990         case EV_KEY:
 991                 bmap = input->keybit;
 992                 limit = KEY_MAX;
 993                 break;
 994         case EV_LED:
 995                 bmap = input->ledbit;
 996                 limit = LED_MAX;
 997                 break;
 998         }
 999
1000         if (unlikely(c > limit || !bmap)) {
1001                 pr_warn_ratelimited("%s: Invalid code %d type %d\n",
1002                                     input->name, c, type);
1003                 *bit = NULL;
1004                 return;
1005         }
1006
1007         usage->type = type;
1008         usage->code = c;
1009         *max = limit;
1010         *bit = bmap;
1011 }
1012
1013 /**
1014  * hid_map_usage_clear - map usage input bits and clear the input bit
1015  *
1016  * @hidinput: hidinput which we are interested in
1017  * @usage: usage to fill in
1018  * @bit: pointer to input->{}bit (out parameter)
1019  * @max: maximal valid usage->code to consider later (out parameter)
1020  * @type: input event type (EV_KEY, EV_REL, ...)
1021  * @c: code which corresponds to this usage and type
1022  *
1023  * The same as hid_map_usage, except the @c bit is also cleared in supported
1024  * bits (@bit).
1025  */
1026 static inline void hid_map_usage_clear(struct hid_input *hidinput,
1027                 struct hid_usage *usage, unsigned long **bit, int *max,
1028                 __u8 type, __u16 c)
1029 {
1030         hid_map_usage(hidinput, usage, bit, max, type, c);
1031         if (*bit)
1032                 clear_bit(usage->code, *bit);
1033 }
1034
1035 /**
1036  * hid_parse - parse HW reports
1037  *
1038  * @hdev: hid device
1039  *
1040  * Call this from probe after you set up the device (if needed). Your
1041  * report_fixup will be called (if non-NULL) after reading raw report from
1042  * device before passing it to hid layer for real parsing.
1043  */
1044 static inline int __must_check hid_parse(struct hid_device *hdev)
1045 {
1046         return hid_open_report(hdev);
1047 }
1048
1049 int __must_check hid_hw_start(struct hid_device *hdev,
1050                               unsigned int connect_mask);
1051 void hid_hw_stop(struct hid_device *hdev);
1052 int __must_check hid_hw_open(struct hid_device *hdev);
1053 void hid_hw_close(struct hid_device *hdev);
1054
1055 /**
1056  * hid_hw_power - requests underlying HW to go into given power mode
1057  *
1058  * @hdev: hid device
1059  * @level: requested power level (one of %PM_HINT_* defines)
1060  *
1061  * This function requests underlying hardware to enter requested power
1062  * mode.
1063  */
1064
1065 static inline int hid_hw_power(struct hid_device *hdev, int level)
1066 {
1067         return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0;
1068 }
1069
1070
1071 /**
1072  * hid_hw_request - send report request to device
1073  *
1074  * @hdev: hid device
1075  * @report: report to send
1076  * @reqtype: hid request type
1077  */
1078 static inline void hid_hw_request(struct hid_device *hdev,
1079                                   struct hid_report *report, int reqtype)
1080 {
1081         if (hdev->ll_driver->request)
1082                 return hdev->ll_driver->request(hdev, report, reqtype);
1083
1084         __hid_request(hdev, report, reqtype);
1085 }
1086
1087 /**
1088  * hid_hw_raw_request - send report request to device
1089  *
1090  * @hdev: hid device
1091  * @reportnum: report ID
1092  * @buf: in/out data to transfer
1093  * @len: length of buf
1094  * @rtype: HID report type
1095  * @reqtype: HID_REQ_GET_REPORT or HID_REQ_SET_REPORT
1096  *
1097  * Return: count of data transferred, negative if error
1098  *
1099  * Same behavior as hid_hw_request, but with raw buffers instead.
1100  */
1101 static inline int hid_hw_raw_request(struct hid_device *hdev,
1102                                   unsigned char reportnum, __u8 *buf,
1103                                   size_t len, unsigned char rtype, int reqtype)
1104 {
1105         if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf)
1106                 return -EINVAL;
1107
1108         return hdev->ll_driver->raw_request(hdev, reportnum, buf, len,
1109                                                     rtype, reqtype);
1110 }
1111
1112 /**
1113  * hid_hw_output_report - send output report to device
1114  *
1115  * @hdev: hid device
1116  * @buf: raw data to transfer
1117  * @len: length of buf
1118  *
1119  * Return: count of data transferred, negative if error
1120  */
1121 static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf,
1122                                         size_t len)
1123 {
1124         if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf)
1125                 return -EINVAL;
1126
1127         if (hdev->ll_driver->output_report)
1128                 return hdev->ll_driver->output_report(hdev, buf, len);
1129
1130         return -ENOSYS;
1131 }
1132
1133 /**
1134  * hid_hw_idle - send idle request to device
1135  *
1136  * @hdev: hid device
1137  * @report: report to control
1138  * @idle: idle state
1139  * @reqtype: hid request type
1140  */
1141 static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle,
1142                 int reqtype)
1143 {
1144         if (hdev->ll_driver->idle)
1145                 return hdev->ll_driver->idle(hdev, report, idle, reqtype);
1146
1147         return 0;
1148 }
1149
1150 /**
1151  * hid_hw_wait - wait for buffered io to complete
1152  *
1153  * @hdev: hid device
1154  */
1155 static inline void hid_hw_wait(struct hid_device *hdev)
1156 {
1157         if (hdev->ll_driver->wait)
1158                 hdev->ll_driver->wait(hdev);
1159 }
1160
1161 /**
1162  * hid_report_len - calculate the report length
1163  *
1164  * @report: the report we want to know the length
1165  */
1166 static inline u32 hid_report_len(struct hid_report *report)
1167 {
1168         /* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */
1169         return ((report->size - 1) >> 3) + 1 + (report->id > 0);
1170 }
1171
1172 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size,
1173                 int interrupt);
1174
1175 /* HID quirks API */
1176 unsigned long hid_lookup_quirk(const struct hid_device *hdev);
1177 int hid_quirks_init(char **quirks_param, __u16 bus, int count);
1178 void hid_quirks_exit(__u16 bus);
1179
1180 #ifdef CONFIG_HID_PID
1181 int hid_pidff_init(struct hid_device *hid);
1182 #else
1183 #define hid_pidff_init NULL
1184 #endif
1185
1186 #define dbg_hid(fmt, ...)                                               \
1187 do {                                                                    \
1188         if (hid_debug)                                                  \
1189                 printk(KERN_DEBUG "%s: " fmt, __FILE__, ##__VA_ARGS__); \
1190 } while (0)
1191
1192 #define hid_err(hid, fmt, ...)                          \
1193         dev_err(&(hid)->dev, fmt, ##__VA_ARGS__)
1194 #define hid_notice(hid, fmt, ...)                       \
1195         dev_notice(&(hid)->dev, fmt, ##__VA_ARGS__)
1196 #define hid_warn(hid, fmt, ...)                         \
1197         dev_warn(&(hid)->dev, fmt, ##__VA_ARGS__)
1198 #define hid_info(hid, fmt, ...)                         \
1199         dev_info(&(hid)->dev, fmt, ##__VA_ARGS__)
1200 #define hid_dbg(hid, fmt, ...)                          \
1201         dev_dbg(&(hid)->dev, fmt, ##__VA_ARGS__)
1202
1203 #define hid_err_once(hid, fmt, ...)                     \
1204         dev_err_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1205 #define hid_notice_once(hid, fmt, ...)                  \
1206         dev_notice_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1207 #define hid_warn_once(hid, fmt, ...)                    \
1208         dev_warn_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1209 #define hid_info_once(hid, fmt, ...)                    \
1210         dev_info_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1211 #define hid_dbg_once(hid, fmt, ...)                     \
1212         dev_dbg_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1213
1214 #endif