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 #include <linux/android_kabi.h> 30 31 /* 32 * We parse each description item into this structure. Short items data 33 * values are expanded to 32-bit signed int, long items contain a pointer 34 * into the data area. 35 */ 36 37 struct hid_item { 38 unsigned format; 39 __u8 size; 40 __u8 type; 41 __u8 tag; 42 union { 43 __u8 u8; 44 __s8 s8; 45 __u16 u16; 46 __s16 s16; 47 __u32 u32; 48 __s32 s32; 49 __u8 *longdata; 50 } data; 51 }; 52 53 /* 54 * HID report item format 55 */ 56 57 #define HID_ITEM_FORMAT_SHORT 0 58 #define HID_ITEM_FORMAT_LONG 1 59 60 /* 61 * Special tag indicating long items 62 */ 63 64 #define HID_ITEM_TAG_LONG 15 65 66 /* 67 * HID report descriptor item type (prefix bit 2,3) 68 */ 69 70 #define HID_ITEM_TYPE_MAIN 0 71 #define HID_ITEM_TYPE_GLOBAL 1 72 #define HID_ITEM_TYPE_LOCAL 2 73 #define HID_ITEM_TYPE_RESERVED 3 74 75 /* 76 * HID report descriptor main item tags 77 */ 78 79 #define HID_MAIN_ITEM_TAG_INPUT 8 80 #define HID_MAIN_ITEM_TAG_OUTPUT 9 81 #define HID_MAIN_ITEM_TAG_FEATURE 11 82 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10 83 #define HID_MAIN_ITEM_TAG_END_COLLECTION 12 84 85 /* 86 * HID report descriptor main item contents 87 */ 88 89 #define HID_MAIN_ITEM_CONSTANT 0x001 90 #define HID_MAIN_ITEM_VARIABLE 0x002 91 #define HID_MAIN_ITEM_RELATIVE 0x004 92 #define HID_MAIN_ITEM_WRAP 0x008 93 #define HID_MAIN_ITEM_NONLINEAR 0x010 94 #define HID_MAIN_ITEM_NO_PREFERRED 0x020 95 #define HID_MAIN_ITEM_NULL_STATE 0x040 96 #define HID_MAIN_ITEM_VOLATILE 0x080 97 #define HID_MAIN_ITEM_BUFFERED_BYTE 0x100 98 99 /* 100 * HID report descriptor collection item types 101 */ 102 103 #define HID_COLLECTION_PHYSICAL 0 104 #define HID_COLLECTION_APPLICATION 1 105 #define HID_COLLECTION_LOGICAL 2 106 107 /* 108 * HID report descriptor global item tags 109 */ 110 111 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0 112 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1 113 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2 114 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3 115 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4 116 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5 117 #define HID_GLOBAL_ITEM_TAG_UNIT 6 118 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7 119 #define HID_GLOBAL_ITEM_TAG_REPORT_ID 8 120 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9 121 #define HID_GLOBAL_ITEM_TAG_PUSH 10 122 #define HID_GLOBAL_ITEM_TAG_POP 11 123 124 /* 125 * HID report descriptor local item tags 126 */ 127 128 #define HID_LOCAL_ITEM_TAG_USAGE 0 129 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1 130 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2 131 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3 132 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4 133 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5 134 #define HID_LOCAL_ITEM_TAG_STRING_INDEX 7 135 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8 136 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9 137 #define HID_LOCAL_ITEM_TAG_DELIMITER 10 138 139 /* 140 * HID usage tables 141 */ 142 143 #define HID_USAGE_PAGE 0xffff0000 144 145 #define HID_UP_UNDEFINED 0x00000000 146 #define HID_UP_GENDESK 0x00010000 147 #define HID_UP_SIMULATION 0x00020000 148 #define HID_UP_GENDEVCTRLS 0x00060000 149 #define HID_UP_KEYBOARD 0x00070000 150 #define HID_UP_LED 0x00080000 151 #define HID_UP_BUTTON 0x00090000 152 #define HID_UP_ORDINAL 0x000a0000 153 #define HID_UP_TELEPHONY 0x000b0000 154 #define HID_UP_CONSUMER 0x000c0000 155 #define HID_UP_DIGITIZER 0x000d0000 156 #define HID_UP_PID 0x000f0000 157 #define HID_UP_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 167 168 #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 379 380 /* 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 8192 /* 8kb */ 501 #define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */ 502 #define HID_OUTPUT_FIFO_SIZE 64 503 504 struct hid_control_fifo { 505 unsigned char dir; 506 struct hid_report *report; 507 char *raw_report; 508 }; 509 510 struct hid_output_fifo { 511 struct hid_report *report; 512 char *raw_report; 513 }; 514 515 #define HID_CLAIMED_INPUT BIT(0) 516 #define HID_CLAIMED_HIDDEV BIT(1) 517 #define HID_CLAIMED_HIDRAW BIT(2) 518 #define HID_CLAIMED_DRIVER BIT(3) 519 520 #define HID_STAT_ADDED BIT(0) 521 #define HID_STAT_PARSED BIT(1) 522 #define HID_STAT_DUP_DETECTED BIT(2) 523 #define HID_STAT_REPROBED BIT(3) 524 525 struct hid_input { 526 struct list_head list; 527 struct hid_report *report; 528 struct input_dev *input; 529 const char *name; 530 bool registered; 531 struct list_head reports; /* the list of reports */ 532 unsigned int application; /* application usage for this input */ 533 }; 534 535 enum hid_type { 536 HID_TYPE_OTHER = 0, 537 HID_TYPE_USBMOUSE, 538 HID_TYPE_USBNONE 539 }; 540 541 enum hid_battery_status { 542 HID_BATTERY_UNKNOWN = 0, 543 HID_BATTERY_QUERIED, /* Kernel explicitly queried battery strength */ 544 HID_BATTERY_REPORTED, /* Device sent unsolicited battery strength report */ 545 }; 546 547 struct hid_driver; 548 struct hid_ll_driver; 549 550 struct hid_device { /* device report descriptor */ 551 __u8 *dev_rdesc; 552 unsigned dev_rsize; 553 __u8 *rdesc; 554 unsigned rsize; 555 struct hid_collection *collection; /* List of HID collections */ 556 unsigned collection_size; /* Number of allocated hid_collections */ 557 unsigned maxcollection; /* Number of parsed collections */ 558 unsigned maxapplication; /* Number of applications */ 559 __u16 bus; /* BUS ID */ 560 __u16 group; /* Report group */ 561 __u32 vendor; /* Vendor ID */ 562 __u32 product; /* Product ID */ 563 __u32 version; /* HID version */ 564 enum hid_type type; /* device type (mouse, kbd, ...) */ 565 unsigned country; /* HID country */ 566 struct hid_report_enum report_enum[HID_REPORT_TYPES]; 567 struct work_struct led_work; /* delayed LED worker */ 568 569 struct semaphore driver_input_lock; /* protects the current driver */ 570 struct device dev; /* device */ 571 struct hid_driver *driver; 572 573 struct hid_ll_driver *ll_driver; 574 struct mutex ll_open_lock; 575 unsigned int ll_open_count; 576 577 #ifdef CONFIG_HID_BATTERY_STRENGTH 578 /* 579 * Power supply information for HID devices which report 580 * battery strength. power_supply was successfully registered if 581 * battery is non-NULL. 582 */ 583 struct power_supply *battery; 584 __s32 battery_capacity; 585 __s32 battery_min; 586 __s32 battery_max; 587 __s32 battery_report_type; 588 __s32 battery_report_id; 589 enum hid_battery_status battery_status; 590 bool battery_avoid_query; 591 #endif 592 593 unsigned long status; /* see STAT flags above */ 594 unsigned claimed; /* Claimed by hidinput, hiddev? */ 595 unsigned quirks; /* Various quirks the device can pull on us */ 596 bool io_started; /* If IO has started */ 597 598 struct list_head inputs; /* The list of inputs */ 599 void *hiddev; /* The hiddev structure */ 600 void *hidraw; 601 602 char name[128]; /* Device name */ 603 char phys[64]; /* Device physical location */ 604 char uniq[64]; /* Device unique identifier (serial #) */ 605 606 void *driver_data; 607 608 /* temporary hid_ff handling (until moved to the drivers) */ 609 int (*ff_init)(struct hid_device *); 610 611 /* hiddev event handler */ 612 int (*hiddev_connect)(struct hid_device *, unsigned int); 613 void (*hiddev_disconnect)(struct hid_device *); 614 void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field, 615 struct hid_usage *, __s32); 616 void (*hiddev_report_event) (struct hid_device *, struct hid_report *); 617 618 /* debugging support via debugfs */ 619 unsigned short debug; 620 struct dentry *debug_dir; 621 struct dentry *debug_rdesc; 622 struct dentry *debug_events; 623 struct list_head debug_list; 624 spinlock_t debug_list_lock; 625 wait_queue_head_t debug_wait; 626 627 ANDROID_KABI_RESERVE(1); 628 ANDROID_KABI_RESERVE(2); 629 }; 630 631 #define to_hid_device(pdev) \ 632 container_of(pdev, struct hid_device, dev) 633 hid_get_drvdata(struct hid_device * hdev)634 static inline void *hid_get_drvdata(struct hid_device *hdev) 635 { 636 return dev_get_drvdata(&hdev->dev); 637 } 638 hid_set_drvdata(struct hid_device * hdev,void * data)639 static inline void hid_set_drvdata(struct hid_device *hdev, void *data) 640 { 641 dev_set_drvdata(&hdev->dev, data); 642 } 643 644 #define HID_GLOBAL_STACK_SIZE 4 645 #define HID_COLLECTION_STACK_SIZE 4 646 647 #define HID_SCAN_FLAG_MT_WIN_8 BIT(0) 648 #define HID_SCAN_FLAG_VENDOR_SPECIFIC BIT(1) 649 #define HID_SCAN_FLAG_GD_POINTER BIT(2) 650 651 struct hid_parser { 652 struct hid_global global; 653 struct hid_global global_stack[HID_GLOBAL_STACK_SIZE]; 654 unsigned int global_stack_ptr; 655 struct hid_local local; 656 unsigned int *collection_stack; 657 unsigned int collection_stack_ptr; 658 unsigned int collection_stack_size; 659 struct hid_device *device; 660 unsigned int scan_flags; 661 }; 662 663 struct hid_class_descriptor { 664 __u8 bDescriptorType; 665 __le16 wDescriptorLength; 666 } __attribute__ ((packed)); 667 668 struct hid_descriptor { 669 __u8 bLength; 670 __u8 bDescriptorType; 671 __le16 bcdHID; 672 __u8 bCountryCode; 673 __u8 bNumDescriptors; 674 675 struct hid_class_descriptor desc[1]; 676 } __attribute__ ((packed)); 677 678 #define HID_DEVICE(b, g, ven, prod) \ 679 .bus = (b), .group = (g), .vendor = (ven), .product = (prod) 680 #define HID_USB_DEVICE(ven, prod) \ 681 .bus = BUS_USB, .vendor = (ven), .product = (prod) 682 #define HID_BLUETOOTH_DEVICE(ven, prod) \ 683 .bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod) 684 #define HID_I2C_DEVICE(ven, prod) \ 685 .bus = BUS_I2C, .vendor = (ven), .product = (prod) 686 #define HID_SPI_DEVICE(ven, prod) \ 687 .bus = BUS_SPI, .vendor = (ven), .product = (prod) 688 689 #define HID_REPORT_ID(rep) \ 690 .report_type = (rep) 691 #define HID_USAGE_ID(uhid, utype, ucode) \ 692 .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode) 693 /* we don't want to catch types and codes equal to 0 */ 694 #define HID_TERMINATOR (HID_ANY_ID - 1) 695 696 struct hid_report_id { 697 __u32 report_type; 698 }; 699 struct hid_usage_id { 700 __u32 usage_hid; 701 __u32 usage_type; 702 __u32 usage_code; 703 }; 704 705 /** 706 * struct hid_driver 707 * @name: driver name (e.g. "Footech_bar-wheel") 708 * @id_table: which devices is this driver for (must be non-NULL for probe 709 * to be called) 710 * @dyn_list: list of dynamically added device ids 711 * @dyn_lock: lock protecting @dyn_list 712 * @match: check if the given device is handled by this driver 713 * @probe: new device inserted 714 * @remove: device removed (NULL if not a hot-plug capable driver) 715 * @report_table: on which reports to call raw_event (NULL means all) 716 * @raw_event: if report in report_table, this hook is called (NULL means nop) 717 * @usage_table: on which events to call event (NULL means all) 718 * @event: if usage in usage_table, this hook is called (NULL means nop) 719 * @report: this hook is called after parsing a report (NULL means nop) 720 * @report_fixup: called before report descriptor parsing (NULL means nop) 721 * @input_mapping: invoked on input registering before mapping an usage 722 * @input_mapped: invoked on input registering after mapping an usage 723 * @input_configured: invoked just before the device is registered 724 * @feature_mapping: invoked on feature registering 725 * @suspend: invoked on suspend (NULL means nop) 726 * @resume: invoked on resume if device was not reset (NULL means nop) 727 * @reset_resume: invoked on resume if device was reset (NULL means nop) 728 * 729 * probe should return -errno on error, or 0 on success. During probe, 730 * input will not be passed to raw_event unless hid_device_io_start is 731 * called. 732 * 733 * raw_event and event should return negative on error, any other value will 734 * pass the event on to .event() typically return 0 for success. 735 * 736 * input_mapping shall return a negative value to completely ignore this usage 737 * (e.g. doubled or invalid usage), zero to continue with parsing of this 738 * usage by generic code (no special handling needed) or positive to skip 739 * generic parsing (needed special handling which was done in the hook already) 740 * input_mapped shall return negative to inform the layer that this usage 741 * should not be considered for further processing or zero to notify that 742 * no processing was performed and should be done in a generic manner 743 * Both these functions may be NULL which means the same behavior as returning 744 * zero from them. 745 */ 746 struct hid_driver { 747 char *name; 748 const struct hid_device_id *id_table; 749 750 struct list_head dyn_list; 751 spinlock_t dyn_lock; 752 753 bool (*match)(struct hid_device *dev, bool ignore_special_driver); 754 int (*probe)(struct hid_device *dev, const struct hid_device_id *id); 755 void (*remove)(struct hid_device *dev); 756 757 const struct hid_report_id *report_table; 758 int (*raw_event)(struct hid_device *hdev, struct hid_report *report, 759 u8 *data, int size); 760 const struct hid_usage_id *usage_table; 761 int (*event)(struct hid_device *hdev, struct hid_field *field, 762 struct hid_usage *usage, __s32 value); 763 void (*report)(struct hid_device *hdev, struct hid_report *report); 764 765 __u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf, 766 unsigned int *size); 767 768 int (*input_mapping)(struct hid_device *hdev, 769 struct hid_input *hidinput, struct hid_field *field, 770 struct hid_usage *usage, unsigned long **bit, int *max); 771 int (*input_mapped)(struct hid_device *hdev, 772 struct hid_input *hidinput, struct hid_field *field, 773 struct hid_usage *usage, unsigned long **bit, int *max); 774 int (*input_configured)(struct hid_device *hdev, 775 struct hid_input *hidinput); 776 void (*feature_mapping)(struct hid_device *hdev, 777 struct hid_field *field, 778 struct hid_usage *usage); 779 #ifdef CONFIG_PM 780 int (*suspend)(struct hid_device *hdev, pm_message_t message); 781 int (*resume)(struct hid_device *hdev); 782 int (*reset_resume)(struct hid_device *hdev); 783 #endif 784 /* private: */ 785 struct device_driver driver; 786 }; 787 788 #define to_hid_driver(pdrv) \ 789 container_of(pdrv, struct hid_driver, driver) 790 791 /** 792 * hid_ll_driver - low level driver callbacks 793 * @start: called on probe to start the device 794 * @stop: called on remove 795 * @open: called by input layer on open 796 * @close: called by input layer on close 797 * @power: request underlying hardware to enter requested power mode 798 * @parse: this method is called only once to parse the device data, 799 * shouldn't allocate anything to not leak memory 800 * @request: send report request to device (e.g. feature report) 801 * @wait: wait for buffered io to complete (send/recv reports) 802 * @raw_request: send raw report request to device (e.g. feature report) 803 * @output_report: send output report to device 804 * @idle: send idle request to device 805 */ 806 struct hid_ll_driver { 807 int (*start)(struct hid_device *hdev); 808 void (*stop)(struct hid_device *hdev); 809 810 int (*open)(struct hid_device *hdev); 811 void (*close)(struct hid_device *hdev); 812 813 int (*power)(struct hid_device *hdev, int level); 814 815 int (*parse)(struct hid_device *hdev); 816 817 void (*request)(struct hid_device *hdev, 818 struct hid_report *report, int reqtype); 819 820 int (*wait)(struct hid_device *hdev); 821 822 int (*raw_request) (struct hid_device *hdev, unsigned char reportnum, 823 __u8 *buf, size_t len, unsigned char rtype, 824 int reqtype); 825 826 int (*output_report) (struct hid_device *hdev, __u8 *buf, size_t len); 827 828 int (*idle)(struct hid_device *hdev, int report, int idle, int reqtype); 829 }; 830 831 extern struct hid_ll_driver i2c_hid_ll_driver; 832 extern struct hid_ll_driver hidp_hid_driver; 833 extern struct hid_ll_driver uhid_hid_driver; 834 extern struct hid_ll_driver usb_hid_driver; 835 hid_is_using_ll_driver(struct hid_device * hdev,struct hid_ll_driver * driver)836 static inline bool hid_is_using_ll_driver(struct hid_device *hdev, 837 struct hid_ll_driver *driver) 838 { 839 return hdev->ll_driver == driver; 840 } 841 hid_is_usb(struct hid_device * hdev)842 static inline bool hid_is_usb(struct hid_device *hdev) 843 { 844 return hid_is_using_ll_driver(hdev, &usb_hid_driver); 845 } 846 847 #define PM_HINT_FULLON 1<<5 848 #define PM_HINT_NORMAL 1<<1 849 850 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */ 851 /* We ignore a few input applications that are not widely used */ 852 #define IS_INPUT_APPLICATION(a) \ 853 (((a >= HID_UP_GENDESK) && (a <= HID_GD_MULTIAXIS)) \ 854 || ((a >= HID_DG_PEN) && (a <= HID_DG_WHITEBOARD)) \ 855 || (a == HID_GD_SYSTEM_CONTROL) || (a == HID_CP_CONSUMER_CONTROL) \ 856 || (a == HID_GD_WIRELESS_RADIO_CTLS)) 857 858 /* HID core API */ 859 860 extern int hid_debug; 861 862 extern bool hid_ignore(struct hid_device *); 863 extern int hid_add_device(struct hid_device *); 864 extern void hid_destroy_device(struct hid_device *); 865 866 extern struct bus_type hid_bus_type; 867 868 extern int __must_check __hid_register_driver(struct hid_driver *, 869 struct module *, const char *mod_name); 870 871 /* use a define to avoid include chaining to get THIS_MODULE & friends */ 872 #define hid_register_driver(driver) \ 873 __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) 874 875 extern void hid_unregister_driver(struct hid_driver *); 876 877 /** 878 * module_hid_driver() - Helper macro for registering a HID driver 879 * @__hid_driver: hid_driver struct 880 * 881 * Helper macro for HID drivers which do not do anything special in module 882 * init/exit. This eliminates a lot of boilerplate. Each module may only 883 * use this macro once, and calling it replaces module_init() and module_exit() 884 */ 885 #define module_hid_driver(__hid_driver) \ 886 module_driver(__hid_driver, hid_register_driver, \ 887 hid_unregister_driver) 888 889 extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32); 890 extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report); 891 extern int hidinput_connect(struct hid_device *hid, unsigned int force); 892 extern void hidinput_disconnect(struct hid_device *); 893 894 int hid_set_field(struct hid_field *, unsigned, __s32); 895 int hid_input_report(struct hid_device *, int type, u8 *, u32, int); 896 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field); 897 struct hid_field *hidinput_get_led_field(struct hid_device *hid); 898 unsigned int hidinput_count_leds(struct hid_device *hid); 899 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code); 900 void hid_output_report(struct hid_report *report, __u8 *data); 901 int __hid_request(struct hid_device *hid, struct hid_report *rep, int reqtype); 902 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags); 903 struct hid_device *hid_allocate_device(void); 904 struct hid_report *hid_register_report(struct hid_device *device, 905 unsigned int type, unsigned int id, 906 unsigned int application); 907 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size); 908 struct hid_report *hid_validate_values(struct hid_device *hid, 909 unsigned int type, unsigned int id, 910 unsigned int field_index, 911 unsigned int report_counts); 912 913 void hid_setup_resolution_multiplier(struct hid_device *hid); 914 int hid_open_report(struct hid_device *device); 915 int hid_check_keys_pressed(struct hid_device *hid); 916 int hid_connect(struct hid_device *hid, unsigned int connect_mask); 917 void hid_disconnect(struct hid_device *hid); 918 bool hid_match_one_id(const struct hid_device *hdev, 919 const struct hid_device_id *id); 920 const struct hid_device_id *hid_match_id(const struct hid_device *hdev, 921 const struct hid_device_id *id); 922 const struct hid_device_id *hid_match_device(struct hid_device *hdev, 923 struct hid_driver *hdrv); 924 bool hid_compare_device_paths(struct hid_device *hdev_a, 925 struct hid_device *hdev_b, char separator); 926 s32 hid_snto32(__u32 value, unsigned n); 927 __u32 hid_field_extract(const struct hid_device *hid, __u8 *report, 928 unsigned offset, unsigned n); 929 930 /** 931 * hid_device_io_start - enable HID input during probe, remove 932 * 933 * @hid - the device 934 * 935 * This should only be called during probe or remove and only be 936 * called by the thread calling probe or remove. It will allow 937 * incoming packets to be delivered to the driver. 938 */ hid_device_io_start(struct hid_device * hid)939 static inline void hid_device_io_start(struct hid_device *hid) { 940 if (hid->io_started) { 941 dev_warn(&hid->dev, "io already started\n"); 942 return; 943 } 944 hid->io_started = true; 945 up(&hid->driver_input_lock); 946 } 947 948 /** 949 * hid_device_io_stop - disable HID input during probe, remove 950 * 951 * @hid - the device 952 * 953 * Should only be called after hid_device_io_start. It will prevent 954 * incoming packets from going to the driver for the duration of 955 * probe, remove. If called during probe, packets will still go to the 956 * driver after probe is complete. This function should only be called 957 * by the thread calling probe or remove. 958 */ hid_device_io_stop(struct hid_device * hid)959 static inline void hid_device_io_stop(struct hid_device *hid) { 960 if (!hid->io_started) { 961 dev_warn(&hid->dev, "io already stopped\n"); 962 return; 963 } 964 hid->io_started = false; 965 down(&hid->driver_input_lock); 966 } 967 968 /** 969 * hid_map_usage - map usage input bits 970 * 971 * @hidinput: hidinput which we are interested in 972 * @usage: usage to fill in 973 * @bit: pointer to input->{}bit (out parameter) 974 * @max: maximal valid usage->code to consider later (out parameter) 975 * @type: input event type (EV_KEY, EV_REL, ...) 976 * @c: code which corresponds to this usage and type 977 * 978 * The value pointed to by @bit will be set to NULL if either @type is 979 * an unhandled event type, or if @c is out of range for @type. This 980 * can be used as an error condition. 981 */ hid_map_usage(struct hid_input * hidinput,struct hid_usage * usage,unsigned long ** bit,int * max,__u8 type,unsigned int c)982 static inline void hid_map_usage(struct hid_input *hidinput, 983 struct hid_usage *usage, unsigned long **bit, int *max, 984 __u8 type, unsigned int c) 985 { 986 struct input_dev *input = hidinput->input; 987 unsigned long *bmap = NULL; 988 unsigned int limit = 0; 989 990 switch (type) { 991 case EV_ABS: 992 bmap = input->absbit; 993 limit = ABS_MAX; 994 break; 995 case EV_REL: 996 bmap = input->relbit; 997 limit = REL_MAX; 998 break; 999 case EV_KEY: 1000 bmap = input->keybit; 1001 limit = KEY_MAX; 1002 break; 1003 case EV_LED: 1004 bmap = input->ledbit; 1005 limit = LED_MAX; 1006 break; 1007 } 1008 1009 if (unlikely(c > limit || !bmap)) { 1010 pr_warn_ratelimited("%s: Invalid code %d type %d\n", 1011 input->name, c, type); 1012 *bit = NULL; 1013 return; 1014 } 1015 1016 usage->type = type; 1017 usage->code = c; 1018 *max = limit; 1019 *bit = bmap; 1020 } 1021 1022 /** 1023 * hid_map_usage_clear - map usage input bits and clear the input bit 1024 * 1025 * The same as hid_map_usage, except the @c bit is also cleared in supported 1026 * bits (@bit). 1027 */ hid_map_usage_clear(struct hid_input * hidinput,struct hid_usage * usage,unsigned long ** bit,int * max,__u8 type,__u16 c)1028 static inline void hid_map_usage_clear(struct hid_input *hidinput, 1029 struct hid_usage *usage, unsigned long **bit, int *max, 1030 __u8 type, __u16 c) 1031 { 1032 hid_map_usage(hidinput, usage, bit, max, type, c); 1033 if (*bit) 1034 clear_bit(usage->code, *bit); 1035 } 1036 1037 /** 1038 * hid_parse - parse HW reports 1039 * 1040 * @hdev: hid device 1041 * 1042 * Call this from probe after you set up the device (if needed). Your 1043 * report_fixup will be called (if non-NULL) after reading raw report from 1044 * device before passing it to hid layer for real parsing. 1045 */ hid_parse(struct hid_device * hdev)1046 static inline int __must_check hid_parse(struct hid_device *hdev) 1047 { 1048 return hid_open_report(hdev); 1049 } 1050 1051 int __must_check hid_hw_start(struct hid_device *hdev, 1052 unsigned int connect_mask); 1053 void hid_hw_stop(struct hid_device *hdev); 1054 int __must_check hid_hw_open(struct hid_device *hdev); 1055 void hid_hw_close(struct hid_device *hdev); 1056 1057 /** 1058 * hid_hw_power - requests underlying HW to go into given power mode 1059 * 1060 * @hdev: hid device 1061 * @level: requested power level (one of %PM_HINT_* defines) 1062 * 1063 * This function requests underlying hardware to enter requested power 1064 * mode. 1065 */ 1066 hid_hw_power(struct hid_device * hdev,int level)1067 static inline int hid_hw_power(struct hid_device *hdev, int level) 1068 { 1069 return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0; 1070 } 1071 1072 1073 /** 1074 * hid_hw_request - send report request to device 1075 * 1076 * @hdev: hid device 1077 * @report: report to send 1078 * @reqtype: hid request type 1079 */ hid_hw_request(struct hid_device * hdev,struct hid_report * report,int reqtype)1080 static inline void hid_hw_request(struct hid_device *hdev, 1081 struct hid_report *report, int reqtype) 1082 { 1083 if (hdev->ll_driver->request) 1084 return hdev->ll_driver->request(hdev, report, reqtype); 1085 1086 __hid_request(hdev, report, reqtype); 1087 } 1088 1089 /** 1090 * hid_hw_raw_request - send report request to device 1091 * 1092 * @hdev: hid device 1093 * @reportnum: report ID 1094 * @buf: in/out data to transfer 1095 * @len: length of buf 1096 * @rtype: HID report type 1097 * @reqtype: HID_REQ_GET_REPORT or HID_REQ_SET_REPORT 1098 * 1099 * @return: count of data transfered, negative if error 1100 * 1101 * Same behavior as hid_hw_request, but with raw buffers instead. 1102 */ hid_hw_raw_request(struct hid_device * hdev,unsigned char reportnum,__u8 * buf,size_t len,unsigned char rtype,int reqtype)1103 static inline int hid_hw_raw_request(struct hid_device *hdev, 1104 unsigned char reportnum, __u8 *buf, 1105 size_t len, unsigned char rtype, int reqtype) 1106 { 1107 if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) 1108 return -EINVAL; 1109 1110 return hdev->ll_driver->raw_request(hdev, reportnum, buf, len, 1111 rtype, reqtype); 1112 } 1113 1114 /** 1115 * hid_hw_output_report - send output report to device 1116 * 1117 * @hdev: hid device 1118 * @buf: raw data to transfer 1119 * @len: length of buf 1120 * 1121 * @return: count of data transfered, negative if error 1122 */ hid_hw_output_report(struct hid_device * hdev,__u8 * buf,size_t len)1123 static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, 1124 size_t len) 1125 { 1126 if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) 1127 return -EINVAL; 1128 1129 if (hdev->ll_driver->output_report) 1130 return hdev->ll_driver->output_report(hdev, buf, len); 1131 1132 return -ENOSYS; 1133 } 1134 1135 /** 1136 * hid_hw_idle - send idle request to device 1137 * 1138 * @hdev: hid device 1139 * @report: report to control 1140 * @idle: idle state 1141 * @reqtype: hid request type 1142 */ hid_hw_idle(struct hid_device * hdev,int report,int idle,int reqtype)1143 static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle, 1144 int reqtype) 1145 { 1146 if (hdev->ll_driver->idle) 1147 return hdev->ll_driver->idle(hdev, report, idle, reqtype); 1148 1149 return 0; 1150 } 1151 1152 /** 1153 * hid_hw_wait - wait for buffered io to complete 1154 * 1155 * @hdev: hid device 1156 */ hid_hw_wait(struct hid_device * hdev)1157 static inline void hid_hw_wait(struct hid_device *hdev) 1158 { 1159 if (hdev->ll_driver->wait) 1160 hdev->ll_driver->wait(hdev); 1161 } 1162 1163 /** 1164 * hid_report_len - calculate the report length 1165 * 1166 * @report: the report we want to know the length 1167 */ hid_report_len(struct hid_report * report)1168 static inline u32 hid_report_len(struct hid_report *report) 1169 { 1170 return DIV_ROUND_UP(report->size, 8) + (report->id > 0); 1171 } 1172 1173 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size, 1174 int interrupt); 1175 1176 /* HID quirks API */ 1177 unsigned long hid_lookup_quirk(const struct hid_device *hdev); 1178 int hid_quirks_init(char **quirks_param, __u16 bus, int count); 1179 void hid_quirks_exit(__u16 bus); 1180 1181 #ifdef CONFIG_HID_PID 1182 int hid_pidff_init(struct hid_device *hid); 1183 #else 1184 #define hid_pidff_init NULL 1185 #endif 1186 1187 #define dbg_hid(fmt, ...) \ 1188 do { \ 1189 if (hid_debug) \ 1190 printk(KERN_DEBUG "%s: " fmt, __FILE__, ##__VA_ARGS__); \ 1191 } while (0) 1192 1193 #define hid_err(hid, fmt, ...) \ 1194 dev_err(&(hid)->dev, fmt, ##__VA_ARGS__) 1195 #define hid_notice(hid, fmt, ...) \ 1196 dev_notice(&(hid)->dev, fmt, ##__VA_ARGS__) 1197 #define hid_warn(hid, fmt, ...) \ 1198 dev_warn(&(hid)->dev, fmt, ##__VA_ARGS__) 1199 #define hid_info(hid, fmt, ...) \ 1200 dev_info(&(hid)->dev, fmt, ##__VA_ARGS__) 1201 #define hid_dbg(hid, fmt, ...) \ 1202 dev_dbg(&(hid)->dev, fmt, ##__VA_ARGS__) 1203 1204 #define hid_err_once(hid, fmt, ...) \ 1205 dev_err_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1206 #define hid_notice_once(hid, fmt, ...) \ 1207 dev_notice_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1208 #define hid_warn_once(hid, fmt, ...) \ 1209 dev_warn_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1210 #define hid_info_once(hid, fmt, ...) \ 1211 dev_info_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1212 #define hid_dbg_once(hid, fmt, ...) \ 1213 dev_dbg_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1214 1215 #endif 1216