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_HPVENDOR 0xff7f0000 157 #define HID_UP_HPVENDOR2 0xff010000 158 #define HID_UP_MSVENDOR 0xff000000 159 #define HID_UP_CUSTOM 0x00ff0000 160 #define HID_UP_LOGIVENDOR 0xffbc0000 161 #define HID_UP_LOGIVENDOR2 0xff090000 162 #define HID_UP_LOGIVENDOR3 0xff430000 163 #define HID_UP_LNVENDOR 0xffa00000 164 #define HID_UP_SENSOR 0x00200000 165 #define HID_UP_ASUSVENDOR 0xff310000 166 #define HID_UP_GOOGLEVENDOR 0xffd10000 167 168 #define HID_USAGE 0x0000ffff 169 170 #define HID_GD_POINTER 0x00010001 171 #define HID_GD_MOUSE 0x00010002 172 #define HID_GD_JOYSTICK 0x00010004 173 #define HID_GD_GAMEPAD 0x00010005 174 #define HID_GD_KEYBOARD 0x00010006 175 #define HID_GD_KEYPAD 0x00010007 176 #define HID_GD_MULTIAXIS 0x00010008 177 /* 178 * Microsoft Win8 Wireless Radio Controls extensions CA, see: 179 * http://www.usb.org/developers/hidpage/HUTRR40RadioHIDUsagesFinal.pdf 180 */ 181 #define HID_GD_WIRELESS_RADIO_CTLS 0x0001000c 182 /* 183 * System Multi-Axis, see: 184 * http://www.usb.org/developers/hidpage/HUTRR62_-_Generic_Desktop_CA_for_System_Multi-Axis_Controllers.txt 185 */ 186 #define HID_GD_SYSTEM_MULTIAXIS 0x0001000e 187 188 #define HID_GD_X 0x00010030 189 #define HID_GD_Y 0x00010031 190 #define HID_GD_Z 0x00010032 191 #define HID_GD_RX 0x00010033 192 #define HID_GD_RY 0x00010034 193 #define HID_GD_RZ 0x00010035 194 #define HID_GD_SLIDER 0x00010036 195 #define HID_GD_DIAL 0x00010037 196 #define HID_GD_WHEEL 0x00010038 197 #define HID_GD_HATSWITCH 0x00010039 198 #define HID_GD_BUFFER 0x0001003a 199 #define HID_GD_BYTECOUNT 0x0001003b 200 #define HID_GD_MOTION 0x0001003c 201 #define HID_GD_START 0x0001003d 202 #define HID_GD_SELECT 0x0001003e 203 #define HID_GD_VX 0x00010040 204 #define HID_GD_VY 0x00010041 205 #define HID_GD_VZ 0x00010042 206 #define HID_GD_VBRX 0x00010043 207 #define HID_GD_VBRY 0x00010044 208 #define HID_GD_VBRZ 0x00010045 209 #define HID_GD_VNO 0x00010046 210 #define HID_GD_FEATURE 0x00010047 211 #define HID_GD_RESOLUTION_MULTIPLIER 0x00010048 212 #define HID_GD_SYSTEM_CONTROL 0x00010080 213 #define HID_GD_UP 0x00010090 214 #define HID_GD_DOWN 0x00010091 215 #define HID_GD_RIGHT 0x00010092 216 #define HID_GD_LEFT 0x00010093 217 /* Microsoft Win8 Wireless Radio Controls CA usage codes */ 218 #define HID_GD_RFKILL_BTN 0x000100c6 219 #define HID_GD_RFKILL_LED 0x000100c7 220 #define HID_GD_RFKILL_SWITCH 0x000100c8 221 222 #define HID_DC_BATTERYSTRENGTH 0x00060020 223 224 #define HID_CP_CONSUMER_CONTROL 0x000c0001 225 #define HID_CP_AC_PAN 0x000c0238 226 227 #define HID_DG_DIGITIZER 0x000d0001 228 #define HID_DG_PEN 0x000d0002 229 #define HID_DG_LIGHTPEN 0x000d0003 230 #define HID_DG_TOUCHSCREEN 0x000d0004 231 #define HID_DG_TOUCHPAD 0x000d0005 232 #define HID_DG_WHITEBOARD 0x000d0006 233 #define HID_DG_STYLUS 0x000d0020 234 #define HID_DG_PUCK 0x000d0021 235 #define HID_DG_FINGER 0x000d0022 236 #define HID_DG_TIPPRESSURE 0x000d0030 237 #define HID_DG_BARRELPRESSURE 0x000d0031 238 #define HID_DG_INRANGE 0x000d0032 239 #define HID_DG_TOUCH 0x000d0033 240 #define HID_DG_UNTOUCH 0x000d0034 241 #define HID_DG_TAP 0x000d0035 242 #define HID_DG_TABLETFUNCTIONKEY 0x000d0039 243 #define HID_DG_PROGRAMCHANGEKEY 0x000d003a 244 #define HID_DG_BATTERYSTRENGTH 0x000d003b 245 #define HID_DG_INVERT 0x000d003c 246 #define HID_DG_TILT_X 0x000d003d 247 #define HID_DG_TILT_Y 0x000d003e 248 #define HID_DG_TWIST 0x000d0041 249 #define HID_DG_TIPSWITCH 0x000d0042 250 #define HID_DG_TIPSWITCH2 0x000d0043 251 #define HID_DG_BARRELSWITCH 0x000d0044 252 #define HID_DG_ERASER 0x000d0045 253 #define HID_DG_TABLETPICK 0x000d0046 254 255 #define HID_CP_CONSUMERCONTROL 0x000c0001 256 #define HID_CP_NUMERICKEYPAD 0x000c0002 257 #define HID_CP_PROGRAMMABLEBUTTONS 0x000c0003 258 #define HID_CP_MICROPHONE 0x000c0004 259 #define HID_CP_HEADPHONE 0x000c0005 260 #define HID_CP_GRAPHICEQUALIZER 0x000c0006 261 #define HID_CP_FUNCTIONBUTTONS 0x000c0036 262 #define HID_CP_SELECTION 0x000c0080 263 #define HID_CP_MEDIASELECTION 0x000c0087 264 #define HID_CP_SELECTDISC 0x000c00ba 265 #define HID_CP_VOLUMEUP 0x000c00e9 266 #define HID_CP_VOLUMEDOWN 0x000c00ea 267 #define HID_CP_PLAYBACKSPEED 0x000c00f1 268 #define HID_CP_PROXIMITY 0x000c0109 269 #define HID_CP_SPEAKERSYSTEM 0x000c0160 270 #define HID_CP_CHANNELLEFT 0x000c0161 271 #define HID_CP_CHANNELRIGHT 0x000c0162 272 #define HID_CP_CHANNELCENTER 0x000c0163 273 #define HID_CP_CHANNELFRONT 0x000c0164 274 #define HID_CP_CHANNELCENTERFRONT 0x000c0165 275 #define HID_CP_CHANNELSIDE 0x000c0166 276 #define HID_CP_CHANNELSURROUND 0x000c0167 277 #define HID_CP_CHANNELLOWFREQUENCYENHANCEMENT 0x000c0168 278 #define HID_CP_CHANNELTOP 0x000c0169 279 #define HID_CP_CHANNELUNKNOWN 0x000c016a 280 #define HID_CP_APPLICATIONLAUNCHBUTTONS 0x000c0180 281 #define HID_CP_GENERICGUIAPPLICATIONCONTROLS 0x000c0200 282 283 #define HID_DG_DEVICECONFIG 0x000d000e 284 #define HID_DG_DEVICESETTINGS 0x000d0023 285 #define HID_DG_AZIMUTH 0x000d003f 286 #define HID_DG_CONFIDENCE 0x000d0047 287 #define HID_DG_WIDTH 0x000d0048 288 #define HID_DG_HEIGHT 0x000d0049 289 #define HID_DG_CONTACTID 0x000d0051 290 #define HID_DG_INPUTMODE 0x000d0052 291 #define HID_DG_DEVICEINDEX 0x000d0053 292 #define HID_DG_CONTACTCOUNT 0x000d0054 293 #define HID_DG_CONTACTMAX 0x000d0055 294 #define HID_DG_SCANTIME 0x000d0056 295 #define HID_DG_SURFACESWITCH 0x000d0057 296 #define HID_DG_BUTTONSWITCH 0x000d0058 297 #define HID_DG_BUTTONTYPE 0x000d0059 298 #define HID_DG_BARRELSWITCH2 0x000d005a 299 #define HID_DG_TOOLSERIALNUMBER 0x000d005b 300 #define HID_DG_LATENCYMODE 0x000d0060 301 302 #define HID_VD_ASUS_CUSTOM_MEDIA_KEYS 0xff310076 303 /* 304 * HID report types --- Ouch! HID spec says 1 2 3! 305 */ 306 307 #define HID_INPUT_REPORT 0 308 #define HID_OUTPUT_REPORT 1 309 #define HID_FEATURE_REPORT 2 310 311 #define HID_REPORT_TYPES 3 312 313 /* 314 * HID connect requests 315 */ 316 317 #define HID_CONNECT_HIDINPUT BIT(0) 318 #define HID_CONNECT_HIDINPUT_FORCE BIT(1) 319 #define HID_CONNECT_HIDRAW BIT(2) 320 #define HID_CONNECT_HIDDEV BIT(3) 321 #define HID_CONNECT_HIDDEV_FORCE BIT(4) 322 #define HID_CONNECT_FF BIT(5) 323 #define HID_CONNECT_DRIVER BIT(6) 324 #define HID_CONNECT_DEFAULT (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \ 325 HID_CONNECT_HIDDEV|HID_CONNECT_FF) 326 327 /* 328 * HID device quirks. 329 */ 330 331 /* 332 * Increase this if you need to configure more HID quirks at module load time 333 */ 334 #define MAX_USBHID_BOOT_QUIRKS 4 335 336 #define HID_QUIRK_INVERT BIT(0) 337 #define HID_QUIRK_NOTOUCH BIT(1) 338 #define HID_QUIRK_IGNORE BIT(2) 339 #define HID_QUIRK_NOGET BIT(3) 340 #define HID_QUIRK_HIDDEV_FORCE BIT(4) 341 #define HID_QUIRK_BADPAD BIT(5) 342 #define HID_QUIRK_MULTI_INPUT BIT(6) 343 #define HID_QUIRK_HIDINPUT_FORCE BIT(7) 344 /* BIT(8) reserved for backward compatibility, was HID_QUIRK_NO_EMPTY_INPUT */ 345 /* BIT(9) reserved for backward compatibility, was NO_INIT_INPUT_REPORTS */ 346 #define HID_QUIRK_ALWAYS_POLL BIT(10) 347 #define HID_QUIRK_INPUT_PER_APP BIT(11) 348 #define HID_QUIRK_X_INVERT BIT(12) 349 #define HID_QUIRK_Y_INVERT BIT(13) 350 #define HID_QUIRK_SKIP_OUTPUT_REPORTS BIT(16) 351 #define HID_QUIRK_SKIP_OUTPUT_REPORT_ID BIT(17) 352 #define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP BIT(18) 353 #define HID_QUIRK_HAVE_SPECIAL_DRIVER BIT(19) 354 #define HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE BIT(20) 355 #define HID_QUIRK_FULLSPEED_INTERVAL BIT(28) 356 #define HID_QUIRK_NO_INIT_REPORTS BIT(29) 357 #define HID_QUIRK_NO_IGNORE BIT(30) 358 #define HID_QUIRK_NO_INPUT_SYNC BIT(31) 359 360 /* 361 * HID device groups 362 * 363 * Note: HID_GROUP_ANY is declared in linux/mod_devicetable.h 364 * and has a value of 0x0000 365 */ 366 #define HID_GROUP_GENERIC 0x0001 367 #define HID_GROUP_MULTITOUCH 0x0002 368 #define HID_GROUP_SENSOR_HUB 0x0003 369 #define HID_GROUP_MULTITOUCH_WIN_8 0x0004 370 371 /* 372 * Vendor specific HID device groups 373 */ 374 #define HID_GROUP_RMI 0x0100 375 #define HID_GROUP_WACOM 0x0101 376 #define HID_GROUP_LOGITECH_DJ_DEVICE 0x0102 377 #define HID_GROUP_STEAM 0x0103 378 #define HID_GROUP_LOGITECH_27MHZ_DEVICE 0x0104 379 #define HID_GROUP_VIVALDI 0x0105 380 381 /* 382 * HID protocol status 383 */ 384 #define HID_REPORT_PROTOCOL 1 385 #define HID_BOOT_PROTOCOL 0 386 387 /* 388 * This is the global environment of the parser. This information is 389 * persistent for main-items. The global environment can be saved and 390 * restored with PUSH/POP statements. 391 */ 392 393 struct hid_global { 394 unsigned usage_page; 395 __s32 logical_minimum; 396 __s32 logical_maximum; 397 __s32 physical_minimum; 398 __s32 physical_maximum; 399 __s32 unit_exponent; 400 unsigned unit; 401 unsigned report_id; 402 unsigned report_size; 403 unsigned report_count; 404 }; 405 406 /* 407 * This is the local environment. It is persistent up the next main-item. 408 */ 409 410 #define HID_MAX_USAGES 12288 411 #define HID_DEFAULT_NUM_COLLECTIONS 16 412 413 struct hid_local { 414 unsigned usage[HID_MAX_USAGES]; /* usage array */ 415 u8 usage_size[HID_MAX_USAGES]; /* usage size array */ 416 unsigned collection_index[HID_MAX_USAGES]; /* collection index array */ 417 unsigned usage_index; 418 unsigned usage_minimum; 419 unsigned delimiter_depth; 420 unsigned delimiter_branch; 421 }; 422 423 /* 424 * This is the collection stack. We climb up the stack to determine 425 * application and function of each field. 426 */ 427 428 struct hid_collection { 429 int parent_idx; /* device->collection */ 430 unsigned type; 431 unsigned usage; 432 unsigned level; 433 }; 434 435 struct hid_usage { 436 unsigned hid; /* hid usage code */ 437 unsigned collection_index; /* index into collection array */ 438 unsigned usage_index; /* index into usage array */ 439 __s8 resolution_multiplier;/* Effective Resolution Multiplier 440 (HUT v1.12, 4.3.1), default: 1 */ 441 /* hidinput data */ 442 __s8 wheel_factor; /* 120/resolution_multiplier */ 443 __u16 code; /* input driver code */ 444 __u8 type; /* input driver type */ 445 __s8 hat_min; /* hat switch fun */ 446 __s8 hat_max; /* ditto */ 447 __s8 hat_dir; /* ditto */ 448 __s16 wheel_accumulated; /* hi-res wheel */ 449 }; 450 451 struct hid_input; 452 453 struct hid_field { 454 unsigned physical; /* physical usage for this field */ 455 unsigned logical; /* logical usage for this field */ 456 unsigned application; /* application usage for this field */ 457 struct hid_usage *usage; /* usage table for this function */ 458 unsigned maxusage; /* maximum usage index */ 459 unsigned flags; /* main-item flags (i.e. volatile,array,constant) */ 460 unsigned report_offset; /* bit offset in the report */ 461 unsigned report_size; /* size of this field in the report */ 462 unsigned report_count; /* number of this field in the report */ 463 unsigned report_type; /* (input,output,feature) */ 464 __s32 *value; /* last known value(s) */ 465 __s32 logical_minimum; 466 __s32 logical_maximum; 467 __s32 physical_minimum; 468 __s32 physical_maximum; 469 __s32 unit_exponent; 470 unsigned unit; 471 struct hid_report *report; /* associated report */ 472 unsigned index; /* index into report->field[] */ 473 /* hidinput data */ 474 struct hid_input *hidinput; /* associated input structure */ 475 __u16 dpad; /* dpad input code */ 476 }; 477 478 #define HID_MAX_FIELDS 256 479 480 struct hid_report { 481 struct list_head list; 482 struct list_head hidinput_list; 483 unsigned int id; /* id of this report */ 484 unsigned int type; /* report type */ 485 unsigned int application; /* application usage for this report */ 486 struct hid_field *field[HID_MAX_FIELDS]; /* fields of the report */ 487 unsigned maxfield; /* maximum valid field index */ 488 unsigned size; /* size of the report (bits) */ 489 struct hid_device *device; /* associated device */ 490 }; 491 492 #define HID_MAX_IDS 256 493 494 struct hid_report_enum { 495 unsigned numbered; 496 struct list_head report_list; 497 struct hid_report *report_id_hash[HID_MAX_IDS]; 498 }; 499 500 #define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */ 501 #define HID_MAX_BUFFER_SIZE 8192 /* 8kb */ 502 #define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */ 503 #define HID_OUTPUT_FIFO_SIZE 64 504 505 struct hid_control_fifo { 506 unsigned char dir; 507 struct hid_report *report; 508 char *raw_report; 509 }; 510 511 struct hid_output_fifo { 512 struct hid_report *report; 513 char *raw_report; 514 }; 515 516 #define HID_CLAIMED_INPUT BIT(0) 517 #define HID_CLAIMED_HIDDEV BIT(1) 518 #define HID_CLAIMED_HIDRAW BIT(2) 519 #define HID_CLAIMED_DRIVER BIT(3) 520 521 #define HID_STAT_ADDED BIT(0) 522 #define HID_STAT_PARSED BIT(1) 523 #define HID_STAT_DUP_DETECTED BIT(2) 524 #define HID_STAT_REPROBED BIT(3) 525 526 struct hid_input { 527 struct list_head list; 528 struct hid_report *report; 529 struct input_dev *input; 530 const char *name; 531 bool registered; 532 struct list_head reports; /* the list of reports */ 533 unsigned int application; /* application usage for this input */ 534 }; 535 536 enum hid_type { 537 HID_TYPE_OTHER = 0, 538 HID_TYPE_USBMOUSE, 539 HID_TYPE_USBNONE 540 }; 541 542 enum hid_battery_status { 543 HID_BATTERY_UNKNOWN = 0, 544 HID_BATTERY_QUERIED, /* Kernel explicitly queried battery strength */ 545 HID_BATTERY_REPORTED, /* Device sent unsolicited battery strength report */ 546 }; 547 548 struct hid_driver; 549 struct hid_ll_driver; 550 551 struct hid_device { /* device report descriptor */ 552 __u8 *dev_rdesc; 553 unsigned dev_rsize; 554 __u8 *rdesc; 555 unsigned rsize; 556 struct hid_collection *collection; /* List of HID collections */ 557 unsigned collection_size; /* Number of allocated hid_collections */ 558 unsigned maxcollection; /* Number of parsed collections */ 559 unsigned maxapplication; /* Number of applications */ 560 __u16 bus; /* BUS ID */ 561 __u16 group; /* Report group */ 562 __u32 vendor; /* Vendor ID */ 563 __u32 product; /* Product ID */ 564 __u32 version; /* HID version */ 565 enum hid_type type; /* device type (mouse, kbd, ...) */ 566 unsigned country; /* HID country */ 567 struct hid_report_enum report_enum[HID_REPORT_TYPES]; 568 struct work_struct led_work; /* delayed LED worker */ 569 570 struct semaphore driver_input_lock; /* protects the current driver */ 571 struct device dev; /* device */ 572 struct hid_driver *driver; 573 574 struct hid_ll_driver *ll_driver; 575 struct mutex ll_open_lock; 576 unsigned int ll_open_count; 577 578 #ifdef CONFIG_HID_BATTERY_STRENGTH 579 /* 580 * Power supply information for HID devices which report 581 * battery strength. power_supply was successfully registered if 582 * battery is non-NULL. 583 */ 584 struct power_supply *battery; 585 __s32 battery_capacity; 586 __s32 battery_min; 587 __s32 battery_max; 588 __s32 battery_report_type; 589 __s32 battery_report_id; 590 enum hid_battery_status battery_status; 591 bool battery_avoid_query; 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 hid_get_drvdata(struct hid_device * hdev)632 static inline void *hid_get_drvdata(struct hid_device *hdev) 633 { 634 return dev_get_drvdata(&hdev->dev); 635 } 636 hid_set_drvdata(struct hid_device * hdev,void * data)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 hid_is_using_ll_driver(struct hid_device * hdev,struct hid_ll_driver * driver)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 hid_is_usb(struct hid_device * hdev)838 static inline bool hid_is_usb(struct hid_device *hdev) 839 { 840 return hid_is_using_ll_driver(hdev, &usb_hid_driver); 841 } 842 843 #define PM_HINT_FULLON 1<<5 844 #define PM_HINT_NORMAL 1<<1 845 846 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */ 847 /* We ignore a few input applications that are not widely used */ 848 #define IS_INPUT_APPLICATION(a) \ 849 (((a >= HID_UP_GENDESK) && (a <= HID_GD_MULTIAXIS)) \ 850 || ((a >= HID_DG_PEN) && (a <= HID_DG_WHITEBOARD)) \ 851 || (a == HID_GD_SYSTEM_CONTROL) || (a == HID_CP_CONSUMER_CONTROL) \ 852 || (a == HID_GD_WIRELESS_RADIO_CTLS)) 853 854 /* HID core API */ 855 856 extern int hid_debug; 857 858 extern bool hid_ignore(struct hid_device *); 859 extern int hid_add_device(struct hid_device *); 860 extern void hid_destroy_device(struct hid_device *); 861 862 extern struct bus_type hid_bus_type; 863 864 extern int __must_check __hid_register_driver(struct hid_driver *, 865 struct module *, const char *mod_name); 866 867 /* use a define to avoid include chaining to get THIS_MODULE & friends */ 868 #define hid_register_driver(driver) \ 869 __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) 870 871 extern void hid_unregister_driver(struct hid_driver *); 872 873 /** 874 * module_hid_driver() - Helper macro for registering a HID driver 875 * @__hid_driver: hid_driver struct 876 * 877 * Helper macro for HID drivers which do not do anything special in module 878 * init/exit. This eliminates a lot of boilerplate. Each module may only 879 * use this macro once, and calling it replaces module_init() and module_exit() 880 */ 881 #define module_hid_driver(__hid_driver) \ 882 module_driver(__hid_driver, hid_register_driver, \ 883 hid_unregister_driver) 884 885 extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32); 886 extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report); 887 extern int hidinput_connect(struct hid_device *hid, unsigned int force); 888 extern void hidinput_disconnect(struct hid_device *); 889 890 int hid_set_field(struct hid_field *, unsigned, __s32); 891 int hid_input_report(struct hid_device *, int type, u8 *, u32, int); 892 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field); 893 struct hid_field *hidinput_get_led_field(struct hid_device *hid); 894 unsigned int hidinput_count_leds(struct hid_device *hid); 895 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code); 896 void hid_output_report(struct hid_report *report, __u8 *data); 897 int __hid_request(struct hid_device *hid, struct hid_report *rep, int reqtype); 898 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags); 899 struct hid_device *hid_allocate_device(void); 900 struct hid_report *hid_register_report(struct hid_device *device, 901 unsigned int type, unsigned int id, 902 unsigned int application); 903 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size); 904 struct hid_report *hid_validate_values(struct hid_device *hid, 905 unsigned int type, unsigned int id, 906 unsigned int field_index, 907 unsigned int report_counts); 908 909 void hid_setup_resolution_multiplier(struct hid_device *hid); 910 int hid_open_report(struct hid_device *device); 911 int hid_check_keys_pressed(struct hid_device *hid); 912 int hid_connect(struct hid_device *hid, unsigned int connect_mask); 913 void hid_disconnect(struct hid_device *hid); 914 bool hid_match_one_id(const struct hid_device *hdev, 915 const struct hid_device_id *id); 916 const struct hid_device_id *hid_match_id(const struct hid_device *hdev, 917 const struct hid_device_id *id); 918 const struct hid_device_id *hid_match_device(struct hid_device *hdev, 919 struct hid_driver *hdrv); 920 bool hid_compare_device_paths(struct hid_device *hdev_a, 921 struct hid_device *hdev_b, char separator); 922 s32 hid_snto32(__u32 value, unsigned n); 923 __u32 hid_field_extract(const struct hid_device *hid, __u8 *report, 924 unsigned offset, unsigned n); 925 926 /** 927 * hid_device_io_start - enable HID input during probe, remove 928 * 929 * @hid - the device 930 * 931 * This should only be called during probe or remove and only be 932 * called by the thread calling probe or remove. It will allow 933 * incoming packets to be delivered to the driver. 934 */ hid_device_io_start(struct hid_device * hid)935 static inline void hid_device_io_start(struct hid_device *hid) { 936 if (hid->io_started) { 937 dev_warn(&hid->dev, "io already started\n"); 938 return; 939 } 940 hid->io_started = true; 941 up(&hid->driver_input_lock); 942 } 943 944 /** 945 * hid_device_io_stop - disable HID input during probe, remove 946 * 947 * @hid - the device 948 * 949 * Should only be called after hid_device_io_start. It will prevent 950 * incoming packets from going to the driver for the duration of 951 * probe, remove. If called during probe, packets will still go to the 952 * driver after probe is complete. This function should only be called 953 * by the thread calling probe or remove. 954 */ hid_device_io_stop(struct hid_device * hid)955 static inline void hid_device_io_stop(struct hid_device *hid) { 956 if (!hid->io_started) { 957 dev_warn(&hid->dev, "io already stopped\n"); 958 return; 959 } 960 hid->io_started = false; 961 down(&hid->driver_input_lock); 962 } 963 964 /** 965 * hid_map_usage - map usage input bits 966 * 967 * @hidinput: hidinput which we are interested in 968 * @usage: usage to fill in 969 * @bit: pointer to input->{}bit (out parameter) 970 * @max: maximal valid usage->code to consider later (out parameter) 971 * @type: input event type (EV_KEY, EV_REL, ...) 972 * @c: code which corresponds to this usage and type 973 * 974 * The value pointed to by @bit will be set to NULL if either @type is 975 * an unhandled event type, or if @c is out of range for @type. This 976 * can be used as an error condition. 977 */ hid_map_usage(struct hid_input * hidinput,struct hid_usage * usage,unsigned long ** bit,int * max,__u8 type,unsigned int c)978 static inline void hid_map_usage(struct hid_input *hidinput, 979 struct hid_usage *usage, unsigned long **bit, int *max, 980 __u8 type, unsigned int c) 981 { 982 struct input_dev *input = hidinput->input; 983 unsigned long *bmap = NULL; 984 unsigned int limit = 0; 985 986 switch (type) { 987 case EV_ABS: 988 bmap = input->absbit; 989 limit = ABS_MAX; 990 break; 991 case EV_REL: 992 bmap = input->relbit; 993 limit = REL_MAX; 994 break; 995 case EV_KEY: 996 bmap = input->keybit; 997 limit = KEY_MAX; 998 break; 999 case EV_LED: 1000 bmap = input->ledbit; 1001 limit = LED_MAX; 1002 break; 1003 } 1004 1005 if (unlikely(c > limit || !bmap)) { 1006 pr_warn_ratelimited("%s: Invalid code %d type %d\n", 1007 input->name, c, type); 1008 *bit = NULL; 1009 return; 1010 } 1011 1012 usage->type = type; 1013 usage->code = c; 1014 *max = limit; 1015 *bit = bmap; 1016 } 1017 1018 /** 1019 * hid_map_usage_clear - map usage input bits and clear the input bit 1020 * 1021 * The same as hid_map_usage, except the @c bit is also cleared in supported 1022 * bits (@bit). 1023 */ hid_map_usage_clear(struct hid_input * hidinput,struct hid_usage * usage,unsigned long ** bit,int * max,__u8 type,__u16 c)1024 static inline void hid_map_usage_clear(struct hid_input *hidinput, 1025 struct hid_usage *usage, unsigned long **bit, int *max, 1026 __u8 type, __u16 c) 1027 { 1028 hid_map_usage(hidinput, usage, bit, max, type, c); 1029 if (*bit) 1030 clear_bit(usage->code, *bit); 1031 } 1032 1033 /** 1034 * hid_parse - parse HW reports 1035 * 1036 * @hdev: hid device 1037 * 1038 * Call this from probe after you set up the device (if needed). Your 1039 * report_fixup will be called (if non-NULL) after reading raw report from 1040 * device before passing it to hid layer for real parsing. 1041 */ hid_parse(struct hid_device * hdev)1042 static inline int __must_check hid_parse(struct hid_device *hdev) 1043 { 1044 return hid_open_report(hdev); 1045 } 1046 1047 int __must_check hid_hw_start(struct hid_device *hdev, 1048 unsigned int connect_mask); 1049 void hid_hw_stop(struct hid_device *hdev); 1050 int __must_check hid_hw_open(struct hid_device *hdev); 1051 void hid_hw_close(struct hid_device *hdev); 1052 1053 /** 1054 * hid_hw_power - requests underlying HW to go into given power mode 1055 * 1056 * @hdev: hid device 1057 * @level: requested power level (one of %PM_HINT_* defines) 1058 * 1059 * This function requests underlying hardware to enter requested power 1060 * mode. 1061 */ 1062 hid_hw_power(struct hid_device * hdev,int level)1063 static inline int hid_hw_power(struct hid_device *hdev, int level) 1064 { 1065 return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0; 1066 } 1067 1068 1069 /** 1070 * hid_hw_request - send report request to device 1071 * 1072 * @hdev: hid device 1073 * @report: report to send 1074 * @reqtype: hid request type 1075 */ hid_hw_request(struct hid_device * hdev,struct hid_report * report,int reqtype)1076 static inline void hid_hw_request(struct hid_device *hdev, 1077 struct hid_report *report, int reqtype) 1078 { 1079 if (hdev->ll_driver->request) 1080 return hdev->ll_driver->request(hdev, report, reqtype); 1081 1082 __hid_request(hdev, report, reqtype); 1083 } 1084 1085 /** 1086 * hid_hw_raw_request - send report request to device 1087 * 1088 * @hdev: hid device 1089 * @reportnum: report ID 1090 * @buf: in/out data to transfer 1091 * @len: length of buf 1092 * @rtype: HID report type 1093 * @reqtype: HID_REQ_GET_REPORT or HID_REQ_SET_REPORT 1094 * 1095 * @return: count of data transfered, negative if error 1096 * 1097 * Same behavior as hid_hw_request, but with raw buffers instead. 1098 */ hid_hw_raw_request(struct hid_device * hdev,unsigned char reportnum,__u8 * buf,size_t len,unsigned char rtype,int reqtype)1099 static inline int hid_hw_raw_request(struct hid_device *hdev, 1100 unsigned char reportnum, __u8 *buf, 1101 size_t len, unsigned char rtype, int reqtype) 1102 { 1103 if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) 1104 return -EINVAL; 1105 1106 return hdev->ll_driver->raw_request(hdev, reportnum, buf, len, 1107 rtype, reqtype); 1108 } 1109 1110 /** 1111 * hid_hw_output_report - send output report to device 1112 * 1113 * @hdev: hid device 1114 * @buf: raw data to transfer 1115 * @len: length of buf 1116 * 1117 * @return: count of data transfered, negative if error 1118 */ hid_hw_output_report(struct hid_device * hdev,__u8 * buf,size_t len)1119 static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, 1120 size_t len) 1121 { 1122 if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) 1123 return -EINVAL; 1124 1125 if (hdev->ll_driver->output_report) 1126 return hdev->ll_driver->output_report(hdev, buf, len); 1127 1128 return -ENOSYS; 1129 } 1130 1131 /** 1132 * hid_hw_idle - send idle request to device 1133 * 1134 * @hdev: hid device 1135 * @report: report to control 1136 * @idle: idle state 1137 * @reqtype: hid request type 1138 */ hid_hw_idle(struct hid_device * hdev,int report,int idle,int reqtype)1139 static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle, 1140 int reqtype) 1141 { 1142 if (hdev->ll_driver->idle) 1143 return hdev->ll_driver->idle(hdev, report, idle, reqtype); 1144 1145 return 0; 1146 } 1147 1148 /** 1149 * hid_hw_wait - wait for buffered io to complete 1150 * 1151 * @hdev: hid device 1152 */ hid_hw_wait(struct hid_device * hdev)1153 static inline void hid_hw_wait(struct hid_device *hdev) 1154 { 1155 if (hdev->ll_driver->wait) 1156 hdev->ll_driver->wait(hdev); 1157 } 1158 1159 /** 1160 * hid_report_len - calculate the report length 1161 * 1162 * @report: the report we want to know the length 1163 */ hid_report_len(struct hid_report * report)1164 static inline u32 hid_report_len(struct hid_report *report) 1165 { 1166 return DIV_ROUND_UP(report->size, 8) + (report->id > 0); 1167 } 1168 1169 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size, 1170 int interrupt); 1171 1172 /* HID quirks API */ 1173 unsigned long hid_lookup_quirk(const struct hid_device *hdev); 1174 int hid_quirks_init(char **quirks_param, __u16 bus, int count); 1175 void hid_quirks_exit(__u16 bus); 1176 1177 #ifdef CONFIG_HID_PID 1178 int hid_pidff_init(struct hid_device *hid); 1179 #else 1180 #define hid_pidff_init NULL 1181 #endif 1182 1183 #define dbg_hid(fmt, ...) \ 1184 do { \ 1185 if (hid_debug) \ 1186 printk(KERN_DEBUG "%s: " fmt, __FILE__, ##__VA_ARGS__); \ 1187 } while (0) 1188 1189 #define hid_err(hid, fmt, ...) \ 1190 dev_err(&(hid)->dev, fmt, ##__VA_ARGS__) 1191 #define hid_notice(hid, fmt, ...) \ 1192 dev_notice(&(hid)->dev, fmt, ##__VA_ARGS__) 1193 #define hid_warn(hid, fmt, ...) \ 1194 dev_warn(&(hid)->dev, fmt, ##__VA_ARGS__) 1195 #define hid_info(hid, fmt, ...) \ 1196 dev_info(&(hid)->dev, fmt, ##__VA_ARGS__) 1197 #define hid_dbg(hid, fmt, ...) \ 1198 dev_dbg(&(hid)->dev, fmt, ##__VA_ARGS__) 1199 1200 #define hid_err_once(hid, fmt, ...) \ 1201 dev_err_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1202 #define hid_notice_once(hid, fmt, ...) \ 1203 dev_notice_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1204 #define hid_warn_once(hid, fmt, ...) \ 1205 dev_warn_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1206 #define hid_info_once(hid, fmt, ...) \ 1207 dev_info_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1208 #define hid_dbg_once(hid, fmt, ...) \ 1209 dev_dbg_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1210 1211 #endif 1212