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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/hid_bpf.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 37struct 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 const __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#define HID_COLLECTION_NAMED_ARRAY 4 107 108/* 109 * HID report descriptor global item tags 110 */ 111 112#define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0 113#define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1 114#define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2 115#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3 116#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4 117#define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5 118#define HID_GLOBAL_ITEM_TAG_UNIT 6 119#define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7 120#define HID_GLOBAL_ITEM_TAG_REPORT_ID 8 121#define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9 122#define HID_GLOBAL_ITEM_TAG_PUSH 10 123#define HID_GLOBAL_ITEM_TAG_POP 11 124 125/* 126 * HID report descriptor local item tags 127 */ 128 129#define HID_LOCAL_ITEM_TAG_USAGE 0 130#define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1 131#define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2 132#define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3 133#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4 134#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5 135#define HID_LOCAL_ITEM_TAG_STRING_INDEX 7 136#define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8 137#define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9 138#define HID_LOCAL_ITEM_TAG_DELIMITER 10 139 140/* 141 * HID usage tables 142 */ 143 144#define HID_USAGE_PAGE 0xffff0000 145 146#define HID_UP_UNDEFINED 0x00000000 147#define HID_UP_GENDESK 0x00010000 148#define HID_UP_SIMULATION 0x00020000 149#define HID_UP_GENDEVCTRLS 0x00060000 150#define HID_UP_KEYBOARD 0x00070000 151#define HID_UP_LED 0x00080000 152#define HID_UP_BUTTON 0x00090000 153#define HID_UP_ORDINAL 0x000a0000 154#define HID_UP_TELEPHONY 0x000b0000 155#define HID_UP_CONSUMER 0x000c0000 156#define HID_UP_DIGITIZER 0x000d0000 157#define HID_UP_PID 0x000f0000 158#define HID_UP_BATTERY 0x00850000 159#define HID_UP_CAMERA 0x00900000 160#define HID_UP_HPVENDOR 0xff7f0000 161#define HID_UP_HPVENDOR2 0xff010000 162#define HID_UP_MSVENDOR 0xff000000 163#define HID_UP_CUSTOM 0x00ff0000 164#define HID_UP_LOGIVENDOR 0xffbc0000 165#define HID_UP_LOGIVENDOR2 0xff090000 166#define HID_UP_LOGIVENDOR3 0xff430000 167#define HID_UP_LNVENDOR 0xffa00000 168#define HID_UP_SENSOR 0x00200000 169#define HID_UP_ASUSVENDOR 0xff310000 170#define HID_UP_GOOGLEVENDOR 0xffd10000 171 172#define HID_USAGE 0x0000ffff 173 174#define HID_GD_POINTER 0x00010001 175#define HID_GD_MOUSE 0x00010002 176#define HID_GD_JOYSTICK 0x00010004 177#define HID_GD_GAMEPAD 0x00010005 178#define HID_GD_KEYBOARD 0x00010006 179#define HID_GD_KEYPAD 0x00010007 180#define HID_GD_MULTIAXIS 0x00010008 181/* 182 * Microsoft Win8 Wireless Radio Controls extensions CA, see: 183 * http://www.usb.org/developers/hidpage/HUTRR40RadioHIDUsagesFinal.pdf 184 */ 185#define HID_GD_WIRELESS_RADIO_CTLS 0x0001000c 186/* 187 * System Multi-Axis, see: 188 * http://www.usb.org/developers/hidpage/HUTRR62_-_Generic_Desktop_CA_for_System_Multi-Axis_Controllers.txt 189 */ 190#define HID_GD_SYSTEM_MULTIAXIS 0x0001000e 191 192#define HID_GD_X 0x00010030 193#define HID_GD_Y 0x00010031 194#define HID_GD_Z 0x00010032 195#define HID_GD_RX 0x00010033 196#define HID_GD_RY 0x00010034 197#define HID_GD_RZ 0x00010035 198#define HID_GD_SLIDER 0x00010036 199#define HID_GD_DIAL 0x00010037 200#define HID_GD_WHEEL 0x00010038 201#define HID_GD_HATSWITCH 0x00010039 202#define HID_GD_BUFFER 0x0001003a 203#define HID_GD_BYTECOUNT 0x0001003b 204#define HID_GD_MOTION 0x0001003c 205#define HID_GD_START 0x0001003d 206#define HID_GD_SELECT 0x0001003e 207#define HID_GD_VX 0x00010040 208#define HID_GD_VY 0x00010041 209#define HID_GD_VZ 0x00010042 210#define HID_GD_VBRX 0x00010043 211#define HID_GD_VBRY 0x00010044 212#define HID_GD_VBRZ 0x00010045 213#define HID_GD_VNO 0x00010046 214#define HID_GD_FEATURE 0x00010047 215#define HID_GD_RESOLUTION_MULTIPLIER 0x00010048 216#define HID_GD_SYSTEM_CONTROL 0x00010080 217#define HID_GD_UP 0x00010090 218#define HID_GD_DOWN 0x00010091 219#define HID_GD_RIGHT 0x00010092 220#define HID_GD_LEFT 0x00010093 221/* Microsoft Win8 Wireless Radio Controls CA usage codes */ 222#define HID_GD_RFKILL_BTN 0x000100c6 223#define HID_GD_RFKILL_LED 0x000100c7 224#define HID_GD_RFKILL_SWITCH 0x000100c8 225 226#define HID_DC_BATTERYSTRENGTH 0x00060020 227 228#define HID_CP_CONSUMER_CONTROL 0x000c0001 229#define HID_CP_AC_PAN 0x000c0238 230 231#define HID_DG_DIGITIZER 0x000d0001 232#define HID_DG_PEN 0x000d0002 233#define HID_DG_LIGHTPEN 0x000d0003 234#define HID_DG_TOUCHSCREEN 0x000d0004 235#define HID_DG_TOUCHPAD 0x000d0005 236#define HID_DG_WHITEBOARD 0x000d0006 237#define HID_DG_STYLUS 0x000d0020 238#define HID_DG_PUCK 0x000d0021 239#define HID_DG_FINGER 0x000d0022 240#define HID_DG_TIPPRESSURE 0x000d0030 241#define HID_DG_BARRELPRESSURE 0x000d0031 242#define HID_DG_INRANGE 0x000d0032 243#define HID_DG_TOUCH 0x000d0033 244#define HID_DG_UNTOUCH 0x000d0034 245#define HID_DG_TAP 0x000d0035 246#define HID_DG_TRANSDUCER_INDEX 0x000d0038 247#define HID_DG_TABLETFUNCTIONKEY 0x000d0039 248#define HID_DG_PROGRAMCHANGEKEY 0x000d003a 249#define HID_DG_BATTERYSTRENGTH 0x000d003b 250#define HID_DG_INVERT 0x000d003c 251#define HID_DG_TILT_X 0x000d003d 252#define HID_DG_TILT_Y 0x000d003e 253#define HID_DG_TWIST 0x000d0041 254#define HID_DG_TIPSWITCH 0x000d0042 255#define HID_DG_TIPSWITCH2 0x000d0043 256#define HID_DG_BARRELSWITCH 0x000d0044 257#define HID_DG_ERASER 0x000d0045 258#define HID_DG_TABLETPICK 0x000d0046 259#define HID_DG_PEN_COLOR 0x000d005c 260#define HID_DG_PEN_LINE_WIDTH 0x000d005e 261#define HID_DG_PEN_LINE_STYLE 0x000d0070 262#define HID_DG_PEN_LINE_STYLE_INK 0x000d0072 263#define HID_DG_PEN_LINE_STYLE_PENCIL 0x000d0073 264#define HID_DG_PEN_LINE_STYLE_HIGHLIGHTER 0x000d0074 265#define HID_DG_PEN_LINE_STYLE_CHISEL_MARKER 0x000d0075 266#define HID_DG_PEN_LINE_STYLE_BRUSH 0x000d0076 267#define HID_DG_PEN_LINE_STYLE_NO_PREFERENCE 0x000d0077 268 269#define HID_CP_CONSUMERCONTROL 0x000c0001 270#define HID_CP_NUMERICKEYPAD 0x000c0002 271#define HID_CP_PROGRAMMABLEBUTTONS 0x000c0003 272#define HID_CP_MICROPHONE 0x000c0004 273#define HID_CP_HEADPHONE 0x000c0005 274#define HID_CP_GRAPHICEQUALIZER 0x000c0006 275#define HID_CP_FUNCTIONBUTTONS 0x000c0036 276#define HID_CP_SELECTION 0x000c0080 277#define HID_CP_MEDIASELECTION 0x000c0087 278#define HID_CP_SELECTDISC 0x000c00ba 279#define HID_CP_VOLUMEUP 0x000c00e9 280#define HID_CP_VOLUMEDOWN 0x000c00ea 281#define HID_CP_PLAYBACKSPEED 0x000c00f1 282#define HID_CP_PROXIMITY 0x000c0109 283#define HID_CP_SPEAKERSYSTEM 0x000c0160 284#define HID_CP_CHANNELLEFT 0x000c0161 285#define HID_CP_CHANNELRIGHT 0x000c0162 286#define HID_CP_CHANNELCENTER 0x000c0163 287#define HID_CP_CHANNELFRONT 0x000c0164 288#define HID_CP_CHANNELCENTERFRONT 0x000c0165 289#define HID_CP_CHANNELSIDE 0x000c0166 290#define HID_CP_CHANNELSURROUND 0x000c0167 291#define HID_CP_CHANNELLOWFREQUENCYENHANCEMENT 0x000c0168 292#define HID_CP_CHANNELTOP 0x000c0169 293#define HID_CP_CHANNELUNKNOWN 0x000c016a 294#define HID_CP_APPLICATIONLAUNCHBUTTONS 0x000c0180 295#define HID_CP_GENERICGUIAPPLICATIONCONTROLS 0x000c0200 296 297#define HID_DG_DEVICECONFIG 0x000d000e 298#define HID_DG_DEVICESETTINGS 0x000d0023 299#define HID_DG_AZIMUTH 0x000d003f 300#define HID_DG_CONFIDENCE 0x000d0047 301#define HID_DG_WIDTH 0x000d0048 302#define HID_DG_HEIGHT 0x000d0049 303#define HID_DG_CONTACTID 0x000d0051 304#define HID_DG_INPUTMODE 0x000d0052 305#define HID_DG_DEVICEINDEX 0x000d0053 306#define HID_DG_CONTACTCOUNT 0x000d0054 307#define HID_DG_CONTACTMAX 0x000d0055 308#define HID_DG_SCANTIME 0x000d0056 309#define HID_DG_SURFACESWITCH 0x000d0057 310#define HID_DG_BUTTONSWITCH 0x000d0058 311#define HID_DG_BUTTONTYPE 0x000d0059 312#define HID_DG_BARRELSWITCH2 0x000d005a 313#define HID_DG_TOOLSERIALNUMBER 0x000d005b 314#define HID_DG_LATENCYMODE 0x000d0060 315 316#define HID_BAT_ABSOLUTESTATEOFCHARGE 0x00850065 317#define HID_BAT_CHARGING 0x00850044 318 319#define HID_VD_ASUS_CUSTOM_MEDIA_KEYS 0xff310076 320 321/* 322 * HID connect requests 323 */ 324 325#define HID_CONNECT_HIDINPUT BIT(0) 326#define HID_CONNECT_HIDINPUT_FORCE BIT(1) 327#define HID_CONNECT_HIDRAW BIT(2) 328#define HID_CONNECT_HIDDEV BIT(3) 329#define HID_CONNECT_HIDDEV_FORCE BIT(4) 330#define HID_CONNECT_FF BIT(5) 331#define HID_CONNECT_DRIVER BIT(6) 332#define HID_CONNECT_DEFAULT (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \ 333 HID_CONNECT_HIDDEV|HID_CONNECT_FF) 334 335/* 336 * HID device quirks. 337 */ 338 339/* 340 * Increase this if you need to configure more HID quirks at module load time 341 */ 342#define MAX_USBHID_BOOT_QUIRKS 4 343 344/** 345 * DOC: HID quirks 346 * | @HID_QUIRK_NOTOUCH: 347 * | @HID_QUIRK_IGNORE: ignore this device 348 * | @HID_QUIRK_NOGET: 349 * | @HID_QUIRK_HIDDEV_FORCE: 350 * | @HID_QUIRK_BADPAD: 351 * | @HID_QUIRK_MULTI_INPUT: 352 * | @HID_QUIRK_HIDINPUT_FORCE: 353 * | @HID_QUIRK_ALWAYS_POLL: 354 * | @HID_QUIRK_INPUT_PER_APP: 355 * | @HID_QUIRK_X_INVERT: 356 * | @HID_QUIRK_Y_INVERT: 357 * | @HID_QUIRK_SKIP_OUTPUT_REPORTS: 358 * | @HID_QUIRK_SKIP_OUTPUT_REPORT_ID: 359 * | @HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP: 360 * | @HID_QUIRK_HAVE_SPECIAL_DRIVER: 361 * | @HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE: 362 * | @HID_QUIRK_IGNORE_SPECIAL_DRIVER 363 * | @HID_QUIRK_FULLSPEED_INTERVAL: 364 * | @HID_QUIRK_NO_INIT_REPORTS: 365 * | @HID_QUIRK_NO_IGNORE: 366 * | @HID_QUIRK_NO_INPUT_SYNC: 367 */ 368/* BIT(0) reserved for backward compatibility, was HID_QUIRK_INVERT */ 369#define HID_QUIRK_NOTOUCH BIT(1) 370#define HID_QUIRK_IGNORE BIT(2) 371#define HID_QUIRK_NOGET BIT(3) 372#define HID_QUIRK_HIDDEV_FORCE BIT(4) 373#define HID_QUIRK_BADPAD BIT(5) 374#define HID_QUIRK_MULTI_INPUT BIT(6) 375#define HID_QUIRK_HIDINPUT_FORCE BIT(7) 376/* BIT(8) reserved for backward compatibility, was HID_QUIRK_NO_EMPTY_INPUT */ 377/* BIT(9) reserved for backward compatibility, was NO_INIT_INPUT_REPORTS */ 378#define HID_QUIRK_ALWAYS_POLL BIT(10) 379#define HID_QUIRK_INPUT_PER_APP BIT(11) 380#define HID_QUIRK_X_INVERT BIT(12) 381#define HID_QUIRK_Y_INVERT BIT(13) 382#define HID_QUIRK_SKIP_OUTPUT_REPORTS BIT(16) 383#define HID_QUIRK_SKIP_OUTPUT_REPORT_ID BIT(17) 384#define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP BIT(18) 385#define HID_QUIRK_HAVE_SPECIAL_DRIVER BIT(19) 386#define HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE BIT(20) 387#define HID_QUIRK_NOINVERT BIT(21) 388#define HID_QUIRK_IGNORE_SPECIAL_DRIVER BIT(22) 389#define HID_QUIRK_FULLSPEED_INTERVAL BIT(28) 390#define HID_QUIRK_NO_INIT_REPORTS BIT(29) 391#define HID_QUIRK_NO_IGNORE BIT(30) 392#define HID_QUIRK_NO_INPUT_SYNC BIT(31) 393 394/* 395 * HID device groups 396 * 397 * Note: HID_GROUP_ANY is declared in linux/mod_devicetable.h 398 * and has a value of 0x0000 399 */ 400#define HID_GROUP_GENERIC 0x0001 401#define HID_GROUP_MULTITOUCH 0x0002 402#define HID_GROUP_SENSOR_HUB 0x0003 403#define HID_GROUP_MULTITOUCH_WIN_8 0x0004 404 405/* 406 * Vendor specific HID device groups 407 */ 408#define HID_GROUP_RMI 0x0100 409#define HID_GROUP_WACOM 0x0101 410#define HID_GROUP_LOGITECH_DJ_DEVICE 0x0102 411#define HID_GROUP_STEAM 0x0103 412#define HID_GROUP_LOGITECH_27MHZ_DEVICE 0x0104 413#define HID_GROUP_VIVALDI 0x0105 414 415/* 416 * HID protocol status 417 */ 418#define HID_REPORT_PROTOCOL 1 419#define HID_BOOT_PROTOCOL 0 420 421/* 422 * This is the global environment of the parser. This information is 423 * persistent for main-items. The global environment can be saved and 424 * restored with PUSH/POP statements. 425 */ 426 427struct hid_global { 428 unsigned usage_page; 429 __s32 logical_minimum; 430 __s32 logical_maximum; 431 __s32 physical_minimum; 432 __s32 physical_maximum; 433 __s32 unit_exponent; 434 unsigned unit; 435 unsigned report_id; 436 unsigned report_size; 437 unsigned report_count; 438}; 439 440/* 441 * This is the local environment. It is persistent up the next main-item. 442 */ 443 444#define HID_MAX_USAGES 12288 445#define HID_DEFAULT_NUM_COLLECTIONS 16 446 447struct hid_local { 448 unsigned usage[HID_MAX_USAGES]; /* usage array */ 449 u8 usage_size[HID_MAX_USAGES]; /* usage size array */ 450 unsigned collection_index[HID_MAX_USAGES]; /* collection index array */ 451 unsigned usage_index; 452 unsigned usage_minimum; 453 unsigned delimiter_depth; 454 unsigned delimiter_branch; 455}; 456 457/* 458 * This is the collection stack. We climb up the stack to determine 459 * application and function of each field. 460 */ 461 462struct hid_collection { 463 int parent_idx; /* device->collection */ 464 unsigned type; 465 unsigned usage; 466 unsigned level; 467}; 468 469struct hid_usage { 470 unsigned hid; /* hid usage code */ 471 unsigned collection_index; /* index into collection array */ 472 unsigned usage_index; /* index into usage array */ 473 __s8 resolution_multiplier;/* Effective Resolution Multiplier 474 (HUT v1.12, 4.3.1), default: 1 */ 475 /* hidinput data */ 476 __s8 wheel_factor; /* 120/resolution_multiplier */ 477 __u16 code; /* input driver code */ 478 __u8 type; /* input driver type */ 479 __s16 hat_min; /* hat switch fun */ 480 __s16 hat_max; /* ditto */ 481 __s16 hat_dir; /* ditto */ 482 __s16 wheel_accumulated; /* hi-res wheel */ 483}; 484 485struct hid_input; 486 487struct hid_field { 488 unsigned physical; /* physical usage for this field */ 489 unsigned logical; /* logical usage for this field */ 490 unsigned application; /* application usage for this field */ 491 struct hid_usage *usage; /* usage table for this function */ 492 unsigned maxusage; /* maximum usage index */ 493 unsigned flags; /* main-item flags (i.e. volatile,array,constant) */ 494 unsigned report_offset; /* bit offset in the report */ 495 unsigned report_size; /* size of this field in the report */ 496 unsigned report_count; /* number of this field in the report */ 497 unsigned report_type; /* (input,output,feature) */ 498 __s32 *value; /* last known value(s) */ 499 __s32 *new_value; /* newly read value(s) */ 500 __s32 *usages_priorities; /* priority of each usage when reading the report 501 * bits 8-16 are reserved for hid-input usage 502 */ 503 __s32 logical_minimum; 504 __s32 logical_maximum; 505 __s32 physical_minimum; 506 __s32 physical_maximum; 507 __s32 unit_exponent; 508 unsigned unit; 509 bool ignored; /* this field is ignored in this event */ 510 struct hid_report *report; /* associated report */ 511 unsigned index; /* index into report->field[] */ 512 /* hidinput data */ 513 struct hid_input *hidinput; /* associated input structure */ 514 __u16 dpad; /* dpad input code */ 515 unsigned int slot_idx; /* slot index in a report */ 516}; 517 518#define HID_MAX_FIELDS 256 519 520struct hid_field_entry { 521 struct list_head list; 522 struct hid_field *field; 523 unsigned int index; 524 __s32 priority; 525}; 526 527struct hid_report { 528 struct list_head list; 529 struct list_head hidinput_list; 530 struct list_head field_entry_list; /* ordered list of input fields */ 531 unsigned int id; /* id of this report */ 532 enum hid_report_type type; /* report type */ 533 unsigned int application; /* application usage for this report */ 534 struct hid_field *field[HID_MAX_FIELDS]; /* fields of the report */ 535 struct hid_field_entry *field_entries; /* allocated memory of input field_entry */ 536 unsigned maxfield; /* maximum valid field index */ 537 unsigned size; /* size of the report (bits) */ 538 struct hid_device *device; /* associated device */ 539 540 /* tool related state */ 541 bool tool_active; /* whether the current tool is active */ 542 unsigned int tool; /* BTN_TOOL_* */ 543}; 544 545#define HID_MAX_IDS 256 546 547struct hid_report_enum { 548 unsigned numbered; 549 struct list_head report_list; 550 struct hid_report *report_id_hash[HID_MAX_IDS]; 551}; 552 553#define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */ 554#define HID_MAX_BUFFER_SIZE 16384 /* 16kb */ 555#define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */ 556#define HID_OUTPUT_FIFO_SIZE 64 557 558struct hid_control_fifo { 559 unsigned char dir; 560 struct hid_report *report; 561 char *raw_report; 562}; 563 564struct hid_output_fifo { 565 struct hid_report *report; 566 char *raw_report; 567}; 568 569#define HID_CLAIMED_INPUT BIT(0) 570#define HID_CLAIMED_HIDDEV BIT(1) 571#define HID_CLAIMED_HIDRAW BIT(2) 572#define HID_CLAIMED_DRIVER BIT(3) 573 574#define HID_STAT_ADDED BIT(0) 575#define HID_STAT_PARSED BIT(1) 576#define HID_STAT_DUP_DETECTED BIT(2) 577#define HID_STAT_REPROBED BIT(3) 578 579struct hid_input { 580 struct list_head list; 581 struct hid_report *report; 582 struct input_dev *input; 583 const char *name; 584 struct list_head reports; /* the list of reports */ 585 unsigned int application; /* application usage for this input */ 586 bool registered; 587}; 588 589enum hid_type { 590 HID_TYPE_OTHER = 0, 591 HID_TYPE_USBMOUSE, 592 HID_TYPE_USBNONE 593}; 594 595enum hid_battery_status { 596 HID_BATTERY_UNKNOWN = 0, 597 HID_BATTERY_QUERIED, /* Kernel explicitly queried battery strength */ 598 HID_BATTERY_REPORTED, /* Device sent unsolicited battery strength report */ 599}; 600 601struct hid_driver; 602struct hid_ll_driver; 603 604struct hid_device { 605 const __u8 *dev_rdesc; /* device report descriptor */ 606 const __u8 *bpf_rdesc; /* bpf modified report descriptor, if any */ 607 const __u8 *rdesc; /* currently used report descriptor */ 608 unsigned int dev_rsize; 609 unsigned int bpf_rsize; 610 unsigned int rsize; 611 unsigned int collection_size; /* Number of allocated hid_collections */ 612 struct hid_collection *collection; /* List of HID collections */ 613 unsigned int maxcollection; /* Number of parsed collections */ 614 unsigned int maxapplication; /* Number of applications */ 615 __u16 bus; /* BUS ID */ 616 __u16 group; /* Report group */ 617 __u32 vendor; /* Vendor ID */ 618 __u32 product; /* Product ID */ 619 __u32 version; /* HID version */ 620 enum hid_type type; /* device type (mouse, kbd, ...) */ 621 unsigned country; /* HID country */ 622 struct hid_report_enum report_enum[HID_REPORT_TYPES]; 623 struct work_struct led_work; /* delayed LED worker */ 624 625 struct semaphore driver_input_lock; /* protects the current driver */ 626 struct device dev; /* device */ 627 struct hid_driver *driver; 628 void *devres_group_id; /* ID of probe devres group */ 629 630 const struct hid_ll_driver *ll_driver; 631 struct mutex ll_open_lock; 632 unsigned int ll_open_count; 633 634#ifdef CONFIG_HID_BATTERY_STRENGTH 635 /* 636 * Power supply information for HID devices which report 637 * battery strength. power_supply was successfully registered if 638 * battery is non-NULL. 639 */ 640 struct power_supply *battery; 641 __s32 battery_capacity; 642 __s32 battery_min; 643 __s32 battery_max; 644 __s32 battery_report_type; 645 __s32 battery_report_id; 646 __s32 battery_charge_status; 647 enum hid_battery_status battery_status; 648 bool battery_avoid_query; 649 ktime_t battery_ratelimit_time; 650#endif 651 652 unsigned long status; /* see STAT flags above */ 653 unsigned claimed; /* Claimed by hidinput, hiddev? */ 654 unsigned quirks; /* Various quirks the device can pull on us */ 655 unsigned initial_quirks; /* Initial set of quirks supplied when creating device */ 656 bool io_started; /* If IO has started */ 657 658 struct list_head inputs; /* The list of inputs */ 659 void *hiddev; /* The hiddev structure */ 660 void *hidraw; 661 662 char name[128]; /* Device name */ 663 char phys[64]; /* Device physical location */ 664 char uniq[64]; /* Device unique identifier (serial #) */ 665 666 void *driver_data; 667 668 /* temporary hid_ff handling (until moved to the drivers) */ 669 int (*ff_init)(struct hid_device *); 670 671 /* hiddev event handler */ 672 int (*hiddev_connect)(struct hid_device *, unsigned int); 673 void (*hiddev_disconnect)(struct hid_device *); 674 void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field, 675 struct hid_usage *, __s32); 676 void (*hiddev_report_event) (struct hid_device *, struct hid_report *); 677 678 /* debugging support via debugfs */ 679 unsigned short debug; 680 struct dentry *debug_dir; 681 struct dentry *debug_rdesc; 682 struct dentry *debug_events; 683 struct list_head debug_list; 684 spinlock_t debug_list_lock; 685 wait_queue_head_t debug_wait; 686 struct kref ref; 687 688 unsigned int id; /* system unique id */ 689 690#ifdef CONFIG_HID_BPF 691 struct hid_bpf bpf; /* hid-bpf data */ 692#endif /* CONFIG_HID_BPF */ 693}; 694 695void hiddev_free(struct kref *ref); 696 697#define to_hid_device(pdev) \ 698 container_of(pdev, struct hid_device, dev) 699 700static inline void *hid_get_drvdata(struct hid_device *hdev) 701{ 702 return dev_get_drvdata(&hdev->dev); 703} 704 705static inline void hid_set_drvdata(struct hid_device *hdev, void *data) 706{ 707 dev_set_drvdata(&hdev->dev, data); 708} 709 710#define HID_GLOBAL_STACK_SIZE 4 711#define HID_COLLECTION_STACK_SIZE 4 712 713#define HID_SCAN_FLAG_MT_WIN_8 BIT(0) 714#define HID_SCAN_FLAG_VENDOR_SPECIFIC BIT(1) 715#define HID_SCAN_FLAG_GD_POINTER BIT(2) 716 717struct hid_parser { 718 struct hid_global global; 719 struct hid_global global_stack[HID_GLOBAL_STACK_SIZE]; 720 unsigned int global_stack_ptr; 721 struct hid_local local; 722 unsigned int *collection_stack; 723 unsigned int collection_stack_ptr; 724 unsigned int collection_stack_size; 725 struct hid_device *device; 726 unsigned int scan_flags; 727}; 728 729struct hid_class_descriptor { 730 __u8 bDescriptorType; 731 __le16 wDescriptorLength; 732} __attribute__ ((packed)); 733 734struct hid_descriptor { 735 __u8 bLength; 736 __u8 bDescriptorType; 737 __le16 bcdHID; 738 __u8 bCountryCode; 739 __u8 bNumDescriptors; 740 741 struct hid_class_descriptor desc[1]; 742} __attribute__ ((packed)); 743 744#define HID_DEVICE(b, g, ven, prod) \ 745 .bus = (b), .group = (g), .vendor = (ven), .product = (prod) 746#define HID_USB_DEVICE(ven, prod) \ 747 .bus = BUS_USB, .vendor = (ven), .product = (prod) 748#define HID_BLUETOOTH_DEVICE(ven, prod) \ 749 .bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod) 750#define HID_I2C_DEVICE(ven, prod) \ 751 .bus = BUS_I2C, .vendor = (ven), .product = (prod) 752 753#define HID_REPORT_ID(rep) \ 754 .report_type = (rep) 755#define HID_USAGE_ID(uhid, utype, ucode) \ 756 .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode) 757/* we don't want to catch types and codes equal to 0 */ 758#define HID_TERMINATOR (HID_ANY_ID - 1) 759 760struct hid_report_id { 761 __u32 report_type; 762}; 763struct hid_usage_id { 764 __u32 usage_hid; 765 __u32 usage_type; 766 __u32 usage_code; 767}; 768 769/** 770 * struct hid_driver 771 * @name: driver name (e.g. "Footech_bar-wheel") 772 * @id_table: which devices is this driver for (must be non-NULL for probe 773 * to be called) 774 * @dyn_list: list of dynamically added device ids 775 * @dyn_lock: lock protecting @dyn_list 776 * @match: check if the given device is handled by this driver 777 * @probe: new device inserted 778 * @remove: device removed (NULL if not a hot-plug capable driver) 779 * @report_table: on which reports to call raw_event (NULL means all) 780 * @raw_event: if report in report_table, this hook is called (NULL means nop) 781 * @usage_table: on which events to call event (NULL means all) 782 * @event: if usage in usage_table, this hook is called (NULL means nop) 783 * @report: this hook is called after parsing a report (NULL means nop) 784 * @report_fixup: called before report descriptor parsing (NULL means nop) 785 * @input_mapping: invoked on input registering before mapping an usage 786 * @input_mapped: invoked on input registering after mapping an usage 787 * @input_configured: invoked just before the device is registered 788 * @feature_mapping: invoked on feature registering 789 * @suspend: invoked on suspend (NULL means nop) 790 * @resume: invoked on resume if device was not reset (NULL means nop) 791 * @reset_resume: invoked on resume if device was reset (NULL means nop) 792 * 793 * probe should return -errno on error, or 0 on success. During probe, 794 * input will not be passed to raw_event unless hid_device_io_start is 795 * called. 796 * 797 * raw_event and event should return negative on error, any other value will 798 * pass the event on to .event() typically return 0 for success. 799 * 800 * input_mapping shall return a negative value to completely ignore this usage 801 * (e.g. doubled or invalid usage), zero to continue with parsing of this 802 * usage by generic code (no special handling needed) or positive to skip 803 * generic parsing (needed special handling which was done in the hook already) 804 * input_mapped shall return negative to inform the layer that this usage 805 * should not be considered for further processing or zero to notify that 806 * no processing was performed and should be done in a generic manner 807 * Both these functions may be NULL which means the same behavior as returning 808 * zero from them. 809 */ 810struct hid_driver { 811 char *name; 812 const struct hid_device_id *id_table; 813 814 struct list_head dyn_list; 815 spinlock_t dyn_lock; 816 817 bool (*match)(struct hid_device *dev, bool ignore_special_driver); 818 int (*probe)(struct hid_device *dev, const struct hid_device_id *id); 819 void (*remove)(struct hid_device *dev); 820 821 const struct hid_report_id *report_table; 822 int (*raw_event)(struct hid_device *hdev, struct hid_report *report, 823 u8 *data, int size); 824 const struct hid_usage_id *usage_table; 825 int (*event)(struct hid_device *hdev, struct hid_field *field, 826 struct hid_usage *usage, __s32 value); 827 void (*report)(struct hid_device *hdev, struct hid_report *report); 828 829 const __u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf, 830 unsigned int *size); 831 832 int (*input_mapping)(struct hid_device *hdev, 833 struct hid_input *hidinput, struct hid_field *field, 834 struct hid_usage *usage, unsigned long **bit, int *max); 835 int (*input_mapped)(struct hid_device *hdev, 836 struct hid_input *hidinput, struct hid_field *field, 837 struct hid_usage *usage, unsigned long **bit, int *max); 838 int (*input_configured)(struct hid_device *hdev, 839 struct hid_input *hidinput); 840 void (*feature_mapping)(struct hid_device *hdev, 841 struct hid_field *field, 842 struct hid_usage *usage); 843 844 int (*suspend)(struct hid_device *hdev, pm_message_t message); 845 int (*resume)(struct hid_device *hdev); 846 int (*reset_resume)(struct hid_device *hdev); 847 848/* private: */ 849 struct device_driver driver; 850}; 851 852#define to_hid_driver(pdrv) \ 853 container_of(pdrv, struct hid_driver, driver) 854 855/** 856 * struct hid_ll_driver - low level driver callbacks 857 * @start: called on probe to start the device 858 * @stop: called on remove 859 * @open: called by input layer on open 860 * @close: called by input layer on close 861 * @power: request underlying hardware to enter requested power mode 862 * @parse: this method is called only once to parse the device data, 863 * shouldn't allocate anything to not leak memory 864 * @request: send report request to device (e.g. feature report) 865 * @wait: wait for buffered io to complete (send/recv reports) 866 * @raw_request: send raw report request to device (e.g. feature report) 867 * @output_report: send output report to device 868 * @idle: send idle request to device 869 * @may_wakeup: return if device may act as a wakeup source during system-suspend 870 * @max_buffer_size: over-ride maximum data buffer size (default: HID_MAX_BUFFER_SIZE) 871 */ 872struct hid_ll_driver { 873 int (*start)(struct hid_device *hdev); 874 void (*stop)(struct hid_device *hdev); 875 876 int (*open)(struct hid_device *hdev); 877 void (*close)(struct hid_device *hdev); 878 879 int (*power)(struct hid_device *hdev, int level); 880 881 int (*parse)(struct hid_device *hdev); 882 883 void (*request)(struct hid_device *hdev, 884 struct hid_report *report, int reqtype); 885 886 int (*wait)(struct hid_device *hdev); 887 888 int (*raw_request) (struct hid_device *hdev, unsigned char reportnum, 889 __u8 *buf, size_t len, unsigned char rtype, 890 int reqtype); 891 892 int (*output_report) (struct hid_device *hdev, __u8 *buf, size_t len); 893 894 int (*idle)(struct hid_device *hdev, int report, int idle, int reqtype); 895 bool (*may_wakeup)(struct hid_device *hdev); 896 897 unsigned int max_buffer_size; 898}; 899 900extern bool hid_is_usb(const struct hid_device *hdev); 901 902#define PM_HINT_FULLON 1<<5 903#define PM_HINT_NORMAL 1<<1 904 905/* Applications from HID Usage Tables 4/8/99 Version 1.1 */ 906/* We ignore a few input applications that are not widely used */ 907#define IS_INPUT_APPLICATION(a) \ 908 (((a >= HID_UP_GENDESK) && (a <= HID_GD_MULTIAXIS)) \ 909 || ((a >= HID_DG_DIGITIZER) && (a <= HID_DG_WHITEBOARD)) \ 910 || (a == HID_GD_SYSTEM_CONTROL) || (a == HID_CP_CONSUMER_CONTROL) \ 911 || (a == HID_GD_WIRELESS_RADIO_CTLS)) 912 913/* HID core API */ 914 915extern bool hid_ignore(struct hid_device *); 916extern int hid_add_device(struct hid_device *); 917extern void hid_destroy_device(struct hid_device *); 918 919extern const struct bus_type hid_bus_type; 920 921extern int __must_check __hid_register_driver(struct hid_driver *, 922 struct module *, const char *mod_name); 923 924/* use a define to avoid include chaining to get THIS_MODULE & friends */ 925#define hid_register_driver(driver) \ 926 __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) 927 928extern void hid_unregister_driver(struct hid_driver *); 929 930/** 931 * module_hid_driver() - Helper macro for registering a HID driver 932 * @__hid_driver: hid_driver struct 933 * 934 * Helper macro for HID drivers which do not do anything special in module 935 * init/exit. This eliminates a lot of boilerplate. Each module may only 936 * use this macro once, and calling it replaces module_init() and module_exit() 937 */ 938#define module_hid_driver(__hid_driver) \ 939 module_driver(__hid_driver, hid_register_driver, \ 940 hid_unregister_driver) 941 942extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32); 943extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report); 944extern int hidinput_connect(struct hid_device *hid, unsigned int force); 945extern void hidinput_disconnect(struct hid_device *); 946 947struct hid_field *hid_find_field(struct hid_device *hdev, unsigned int report_type, 948 unsigned int application, unsigned int usage); 949int hid_set_field(struct hid_field *, unsigned, __s32); 950int hid_input_report(struct hid_device *hid, enum hid_report_type type, u8 *data, u32 size, 951 int interrupt); 952struct hid_field *hidinput_get_led_field(struct hid_device *hid); 953unsigned int hidinput_count_leds(struct hid_device *hid); 954__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code); 955void hid_output_report(struct hid_report *report, __u8 *data); 956int __hid_request(struct hid_device *hid, struct hid_report *rep, enum hid_class_request reqtype); 957u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags); 958struct hid_device *hid_allocate_device(void); 959struct hid_report *hid_register_report(struct hid_device *device, 960 enum hid_report_type type, unsigned int id, 961 unsigned int application); 962int hid_parse_report(struct hid_device *hid, const __u8 *start, unsigned size); 963struct hid_report *hid_validate_values(struct hid_device *hid, 964 enum hid_report_type type, unsigned int id, 965 unsigned int field_index, 966 unsigned int report_counts); 967 968void hid_setup_resolution_multiplier(struct hid_device *hid); 969int hid_open_report(struct hid_device *device); 970int hid_check_keys_pressed(struct hid_device *hid); 971int hid_connect(struct hid_device *hid, unsigned int connect_mask); 972void hid_disconnect(struct hid_device *hid); 973bool hid_match_one_id(const struct hid_device *hdev, 974 const struct hid_device_id *id); 975const struct hid_device_id *hid_match_id(const struct hid_device *hdev, 976 const struct hid_device_id *id); 977const struct hid_device_id *hid_match_device(struct hid_device *hdev, 978 struct hid_driver *hdrv); 979bool hid_compare_device_paths(struct hid_device *hdev_a, 980 struct hid_device *hdev_b, char separator); 981__u32 hid_field_extract(const struct hid_device *hid, __u8 *report, 982 unsigned offset, unsigned n); 983 984#ifdef CONFIG_PM 985int hid_driver_suspend(struct hid_device *hdev, pm_message_t state); 986int hid_driver_reset_resume(struct hid_device *hdev); 987int hid_driver_resume(struct hid_device *hdev); 988#else 989static inline int hid_driver_suspend(struct hid_device *hdev, pm_message_t state) { return 0; } 990static inline int hid_driver_reset_resume(struct hid_device *hdev) { return 0; } 991static inline int hid_driver_resume(struct hid_device *hdev) { return 0; } 992#endif 993 994/** 995 * hid_device_io_start - enable HID input during probe, remove 996 * 997 * @hid: the device 998 * 999 * This should only be called during probe or remove and only be 1000 * called by the thread calling probe or remove. It will allow 1001 * incoming packets to be delivered to the driver. 1002 */ 1003static inline void hid_device_io_start(struct hid_device *hid) { 1004 if (hid->io_started) { 1005 dev_warn(&hid->dev, "io already started\n"); 1006 return; 1007 } 1008 hid->io_started = true; 1009 up(&hid->driver_input_lock); 1010} 1011 1012/** 1013 * hid_device_io_stop - disable HID input during probe, remove 1014 * 1015 * @hid: the device 1016 * 1017 * Should only be called after hid_device_io_start. It will prevent 1018 * incoming packets from going to the driver for the duration of 1019 * probe, remove. If called during probe, packets will still go to the 1020 * driver after probe is complete. This function should only be called 1021 * by the thread calling probe or remove. 1022 */ 1023static inline void hid_device_io_stop(struct hid_device *hid) { 1024 if (!hid->io_started) { 1025 dev_warn(&hid->dev, "io already stopped\n"); 1026 return; 1027 } 1028 hid->io_started = false; 1029 down(&hid->driver_input_lock); 1030} 1031 1032/** 1033 * hid_map_usage - map usage input bits 1034 * 1035 * @hidinput: hidinput which we are interested in 1036 * @usage: usage to fill in 1037 * @bit: pointer to input->{}bit (out parameter) 1038 * @max: maximal valid usage->code to consider later (out parameter) 1039 * @type: input event type (EV_KEY, EV_REL, ...) 1040 * @c: code which corresponds to this usage and type 1041 * 1042 * The value pointed to by @bit will be set to NULL if either @type is 1043 * an unhandled event type, or if @c is out of range for @type. This 1044 * can be used as an error condition. 1045 */ 1046static inline void hid_map_usage(struct hid_input *hidinput, 1047 struct hid_usage *usage, unsigned long **bit, int *max, 1048 __u8 type, unsigned int c) 1049{ 1050 struct input_dev *input = hidinput->input; 1051 unsigned long *bmap = NULL; 1052 unsigned int limit = 0; 1053 1054 switch (type) { 1055 case EV_ABS: 1056 bmap = input->absbit; 1057 limit = ABS_MAX; 1058 break; 1059 case EV_REL: 1060 bmap = input->relbit; 1061 limit = REL_MAX; 1062 break; 1063 case EV_KEY: 1064 bmap = input->keybit; 1065 limit = KEY_MAX; 1066 break; 1067 case EV_LED: 1068 bmap = input->ledbit; 1069 limit = LED_MAX; 1070 break; 1071 case EV_MSC: 1072 bmap = input->mscbit; 1073 limit = MSC_MAX; 1074 break; 1075 } 1076 1077 if (unlikely(c > limit || !bmap)) { 1078 pr_warn_ratelimited("%s: Invalid code %d type %d\n", 1079 input->name, c, type); 1080 *bit = NULL; 1081 return; 1082 } 1083 1084 usage->type = type; 1085 usage->code = c; 1086 *max = limit; 1087 *bit = bmap; 1088} 1089 1090/** 1091 * hid_map_usage_clear - map usage input bits and clear the input bit 1092 * 1093 * @hidinput: hidinput which we are interested in 1094 * @usage: usage to fill in 1095 * @bit: pointer to input->{}bit (out parameter) 1096 * @max: maximal valid usage->code to consider later (out parameter) 1097 * @type: input event type (EV_KEY, EV_REL, ...) 1098 * @c: code which corresponds to this usage and type 1099 * 1100 * The same as hid_map_usage, except the @c bit is also cleared in supported 1101 * bits (@bit). 1102 */ 1103static inline void hid_map_usage_clear(struct hid_input *hidinput, 1104 struct hid_usage *usage, unsigned long **bit, int *max, 1105 __u8 type, __u16 c) 1106{ 1107 hid_map_usage(hidinput, usage, bit, max, type, c); 1108 if (*bit) 1109 clear_bit(usage->code, *bit); 1110} 1111 1112/** 1113 * hid_parse - parse HW reports 1114 * 1115 * @hdev: hid device 1116 * 1117 * Call this from probe after you set up the device (if needed). Your 1118 * report_fixup will be called (if non-NULL) after reading raw report from 1119 * device before passing it to hid layer for real parsing. 1120 */ 1121static inline int __must_check hid_parse(struct hid_device *hdev) 1122{ 1123 return hid_open_report(hdev); 1124} 1125 1126int __must_check hid_hw_start(struct hid_device *hdev, 1127 unsigned int connect_mask); 1128void hid_hw_stop(struct hid_device *hdev); 1129int __must_check hid_hw_open(struct hid_device *hdev); 1130void hid_hw_close(struct hid_device *hdev); 1131void hid_hw_request(struct hid_device *hdev, 1132 struct hid_report *report, enum hid_class_request reqtype); 1133int __hid_hw_raw_request(struct hid_device *hdev, 1134 unsigned char reportnum, __u8 *buf, 1135 size_t len, enum hid_report_type rtype, 1136 enum hid_class_request reqtype, 1137 __u64 source, bool from_bpf); 1138int __hid_hw_output_report(struct hid_device *hdev, __u8 *buf, size_t len, __u64 source, 1139 bool from_bpf); 1140int hid_hw_raw_request(struct hid_device *hdev, 1141 unsigned char reportnum, __u8 *buf, 1142 size_t len, enum hid_report_type rtype, 1143 enum hid_class_request reqtype); 1144int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, size_t len); 1145 1146/** 1147 * hid_hw_power - requests underlying HW to go into given power mode 1148 * 1149 * @hdev: hid device 1150 * @level: requested power level (one of %PM_HINT_* defines) 1151 * 1152 * This function requests underlying hardware to enter requested power 1153 * mode. 1154 */ 1155 1156static inline int hid_hw_power(struct hid_device *hdev, int level) 1157{ 1158 return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0; 1159} 1160 1161 1162/** 1163 * hid_hw_idle - send idle request to device 1164 * 1165 * @hdev: hid device 1166 * @report: report to control 1167 * @idle: idle state 1168 * @reqtype: hid request type 1169 */ 1170static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle, 1171 enum hid_class_request reqtype) 1172{ 1173 if (hdev->ll_driver->idle) 1174 return hdev->ll_driver->idle(hdev, report, idle, reqtype); 1175 1176 return 0; 1177} 1178 1179/** 1180 * hid_hw_may_wakeup - return if the hid device may act as a wakeup source during system-suspend 1181 * 1182 * @hdev: hid device 1183 */ 1184static inline bool hid_hw_may_wakeup(struct hid_device *hdev) 1185{ 1186 if (hdev->ll_driver->may_wakeup) 1187 return hdev->ll_driver->may_wakeup(hdev); 1188 1189 if (hdev->dev.parent) 1190 return device_may_wakeup(hdev->dev.parent); 1191 1192 return false; 1193} 1194 1195/** 1196 * hid_hw_wait - wait for buffered io to complete 1197 * 1198 * @hdev: hid device 1199 */ 1200static inline void hid_hw_wait(struct hid_device *hdev) 1201{ 1202 if (hdev->ll_driver->wait) 1203 hdev->ll_driver->wait(hdev); 1204} 1205 1206/** 1207 * hid_report_len - calculate the report length 1208 * 1209 * @report: the report we want to know the length 1210 */ 1211static inline u32 hid_report_len(struct hid_report *report) 1212{ 1213 return DIV_ROUND_UP(report->size, 8) + (report->id > 0); 1214} 1215 1216int hid_report_raw_event(struct hid_device *hid, enum hid_report_type type, u8 *data, u32 size, 1217 int interrupt); 1218 1219/* HID quirks API */ 1220unsigned long hid_lookup_quirk(const struct hid_device *hdev); 1221int hid_quirks_init(char **quirks_param, __u16 bus, int count); 1222void hid_quirks_exit(__u16 bus); 1223 1224#ifdef CONFIG_HID_PID 1225int hid_pidff_init(struct hid_device *hid); 1226#else 1227#define hid_pidff_init NULL 1228#endif 1229 1230#define dbg_hid(fmt, ...) pr_debug("%s: " fmt, __FILE__, ##__VA_ARGS__) 1231 1232#define hid_err(hid, fmt, ...) \ 1233 dev_err(&(hid)->dev, fmt, ##__VA_ARGS__) 1234#define hid_notice(hid, fmt, ...) \ 1235 dev_notice(&(hid)->dev, fmt, ##__VA_ARGS__) 1236#define hid_warn(hid, fmt, ...) \ 1237 dev_warn(&(hid)->dev, fmt, ##__VA_ARGS__) 1238#define hid_info(hid, fmt, ...) \ 1239 dev_info(&(hid)->dev, fmt, ##__VA_ARGS__) 1240#define hid_dbg(hid, fmt, ...) \ 1241 dev_dbg(&(hid)->dev, fmt, ##__VA_ARGS__) 1242 1243#define hid_err_once(hid, fmt, ...) \ 1244 dev_err_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1245#define hid_notice_once(hid, fmt, ...) \ 1246 dev_notice_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1247#define hid_warn_once(hid, fmt, ...) \ 1248 dev_warn_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1249#define hid_info_once(hid, fmt, ...) \ 1250 dev_info_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1251#define hid_dbg_once(hid, fmt, ...) \ 1252 dev_dbg_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1253 1254#endif