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 <[email protected]>, 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 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 #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_HPVENDOR 0xff7f0000 160 #define HID_UP_HPVENDOR2 0xff010000 161 #define HID_UP_MSVENDOR 0xff000000 162 #define HID_UP_CUSTOM 0x00ff0000 163 #define HID_UP_LOGIVENDOR 0xffbc0000 164 #define HID_UP_LOGIVENDOR2 0xff090000 165 #define HID_UP_LOGIVENDOR3 0xff430000 166 #define HID_UP_LNVENDOR 0xffa00000 167 #define HID_UP_SENSOR 0x00200000 168 #define HID_UP_ASUSVENDOR 0xff310000 169 #define HID_UP_GOOGLEVENDOR 0xffd10000 170 171 #define HID_USAGE 0x0000ffff 172 173 #define HID_GD_POINTER 0x00010001 174 #define HID_GD_MOUSE 0x00010002 175 #define HID_GD_JOYSTICK 0x00010004 176 #define HID_GD_GAMEPAD 0x00010005 177 #define HID_GD_KEYBOARD 0x00010006 178 #define HID_GD_KEYPAD 0x00010007 179 #define HID_GD_MULTIAXIS 0x00010008 180 /* 181 * Microsoft Win8 Wireless Radio Controls extensions CA, see: 182 * http://www.usb.org/developers/hidpage/HUTRR40RadioHIDUsagesFinal.pdf 183 */ 184 #define HID_GD_WIRELESS_RADIO_CTLS 0x0001000c 185 /* 186 * System Multi-Axis, see: 187 * http://www.usb.org/developers/hidpage/HUTRR62_-_Generic_Desktop_CA_for_System_Multi-Axis_Controllers.txt 188 */ 189 #define HID_GD_SYSTEM_MULTIAXIS 0x0001000e 190 191 #define HID_GD_X 0x00010030 192 #define HID_GD_Y 0x00010031 193 #define HID_GD_Z 0x00010032 194 #define HID_GD_RX 0x00010033 195 #define HID_GD_RY 0x00010034 196 #define HID_GD_RZ 0x00010035 197 #define HID_GD_SLIDER 0x00010036 198 #define HID_GD_DIAL 0x00010037 199 #define HID_GD_WHEEL 0x00010038 200 #define HID_GD_HATSWITCH 0x00010039 201 #define HID_GD_BUFFER 0x0001003a 202 #define HID_GD_BYTECOUNT 0x0001003b 203 #define HID_GD_MOTION 0x0001003c 204 #define HID_GD_START 0x0001003d 205 #define HID_GD_SELECT 0x0001003e 206 #define HID_GD_VX 0x00010040 207 #define HID_GD_VY 0x00010041 208 #define HID_GD_VZ 0x00010042 209 #define HID_GD_VBRX 0x00010043 210 #define HID_GD_VBRY 0x00010044 211 #define HID_GD_VBRZ 0x00010045 212 #define HID_GD_VNO 0x00010046 213 #define HID_GD_FEATURE 0x00010047 214 #define HID_GD_RESOLUTION_MULTIPLIER 0x00010048 215 #define HID_GD_SYSTEM_CONTROL 0x00010080 216 #define HID_GD_UP 0x00010090 217 #define HID_GD_DOWN 0x00010091 218 #define HID_GD_RIGHT 0x00010092 219 #define HID_GD_LEFT 0x00010093 220 /* Microsoft Win8 Wireless Radio Controls CA usage codes */ 221 #define HID_GD_RFKILL_BTN 0x000100c6 222 #define HID_GD_RFKILL_LED 0x000100c7 223 #define HID_GD_RFKILL_SWITCH 0x000100c8 224 225 #define HID_DC_BATTERYSTRENGTH 0x00060020 226 227 #define HID_CP_CONSUMER_CONTROL 0x000c0001 228 #define HID_CP_AC_PAN 0x000c0238 229 230 #define HID_DG_DIGITIZER 0x000d0001 231 #define HID_DG_PEN 0x000d0002 232 #define HID_DG_LIGHTPEN 0x000d0003 233 #define HID_DG_TOUCHSCREEN 0x000d0004 234 #define HID_DG_TOUCHPAD 0x000d0005 235 #define HID_DG_WHITEBOARD 0x000d0006 236 #define HID_DG_STYLUS 0x000d0020 237 #define HID_DG_PUCK 0x000d0021 238 #define HID_DG_FINGER 0x000d0022 239 #define HID_DG_TIPPRESSURE 0x000d0030 240 #define HID_DG_BARRELPRESSURE 0x000d0031 241 #define HID_DG_INRANGE 0x000d0032 242 #define HID_DG_TOUCH 0x000d0033 243 #define HID_DG_UNTOUCH 0x000d0034 244 #define HID_DG_TAP 0x000d0035 245 #define HID_DG_TRANSDUCER_INDEX 0x000d0038 246 #define HID_DG_TABLETFUNCTIONKEY 0x000d0039 247 #define HID_DG_PROGRAMCHANGEKEY 0x000d003a 248 #define HID_DG_BATTERYSTRENGTH 0x000d003b 249 #define HID_DG_INVERT 0x000d003c 250 #define HID_DG_TILT_X 0x000d003d 251 #define HID_DG_TILT_Y 0x000d003e 252 #define HID_DG_TWIST 0x000d0041 253 #define HID_DG_TIPSWITCH 0x000d0042 254 #define HID_DG_TIPSWITCH2 0x000d0043 255 #define HID_DG_BARRELSWITCH 0x000d0044 256 #define HID_DG_ERASER 0x000d0045 257 #define HID_DG_TABLETPICK 0x000d0046 258 #define HID_DG_PEN_COLOR 0x000d005c 259 #define HID_DG_PEN_LINE_WIDTH 0x000d005e 260 #define HID_DG_PEN_LINE_STYLE 0x000d0070 261 #define HID_DG_PEN_LINE_STYLE_INK 0x000d0072 262 #define HID_DG_PEN_LINE_STYLE_PENCIL 0x000d0073 263 #define HID_DG_PEN_LINE_STYLE_HIGHLIGHTER 0x000d0074 264 #define HID_DG_PEN_LINE_STYLE_CHISEL_MARKER 0x000d0075 265 #define HID_DG_PEN_LINE_STYLE_BRUSH 0x000d0076 266 #define HID_DG_PEN_LINE_STYLE_NO_PREFERENCE 0x000d0077 267 268 #define HID_CP_CONSUMERCONTROL 0x000c0001 269 #define HID_CP_NUMERICKEYPAD 0x000c0002 270 #define HID_CP_PROGRAMMABLEBUTTONS 0x000c0003 271 #define HID_CP_MICROPHONE 0x000c0004 272 #define HID_CP_HEADPHONE 0x000c0005 273 #define HID_CP_GRAPHICEQUALIZER 0x000c0006 274 #define HID_CP_FUNCTIONBUTTONS 0x000c0036 275 #define HID_CP_SELECTION 0x000c0080 276 #define HID_CP_MEDIASELECTION 0x000c0087 277 #define HID_CP_SELECTDISC 0x000c00ba 278 #define HID_CP_VOLUMEUP 0x000c00e9 279 #define HID_CP_VOLUMEDOWN 0x000c00ea 280 #define HID_CP_PLAYBACKSPEED 0x000c00f1 281 #define HID_CP_PROXIMITY 0x000c0109 282 #define HID_CP_SPEAKERSYSTEM 0x000c0160 283 #define HID_CP_CHANNELLEFT 0x000c0161 284 #define HID_CP_CHANNELRIGHT 0x000c0162 285 #define HID_CP_CHANNELCENTER 0x000c0163 286 #define HID_CP_CHANNELFRONT 0x000c0164 287 #define HID_CP_CHANNELCENTERFRONT 0x000c0165 288 #define HID_CP_CHANNELSIDE 0x000c0166 289 #define HID_CP_CHANNELSURROUND 0x000c0167 290 #define HID_CP_CHANNELLOWFREQUENCYENHANCEMENT 0x000c0168 291 #define HID_CP_CHANNELTOP 0x000c0169 292 #define HID_CP_CHANNELUNKNOWN 0x000c016a 293 #define HID_CP_APPLICATIONLAUNCHBUTTONS 0x000c0180 294 #define HID_CP_GENERICGUIAPPLICATIONCONTROLS 0x000c0200 295 296 #define HID_DG_DEVICECONFIG 0x000d000e 297 #define HID_DG_DEVICESETTINGS 0x000d0023 298 #define HID_DG_AZIMUTH 0x000d003f 299 #define HID_DG_CONFIDENCE 0x000d0047 300 #define HID_DG_WIDTH 0x000d0048 301 #define HID_DG_HEIGHT 0x000d0049 302 #define HID_DG_CONTACTID 0x000d0051 303 #define HID_DG_INPUTMODE 0x000d0052 304 #define HID_DG_DEVICEINDEX 0x000d0053 305 #define HID_DG_CONTACTCOUNT 0x000d0054 306 #define HID_DG_CONTACTMAX 0x000d0055 307 #define HID_DG_SCANTIME 0x000d0056 308 #define HID_DG_SURFACESWITCH 0x000d0057 309 #define HID_DG_BUTTONSWITCH 0x000d0058 310 #define HID_DG_BUTTONTYPE 0x000d0059 311 #define HID_DG_BARRELSWITCH2 0x000d005a 312 #define HID_DG_TOOLSERIALNUMBER 0x000d005b 313 #define HID_DG_LATENCYMODE 0x000d0060 314 315 #define HID_BAT_ABSOLUTESTATEOFCHARGE 0x00850065 316 #define HID_BAT_CHARGING 0x00850044 317 318 #define HID_VD_ASUS_CUSTOM_MEDIA_KEYS 0xff310076 319 320 /* 321 * HID connect requests 322 */ 323 324 #define HID_CONNECT_HIDINPUT BIT(0) 325 #define HID_CONNECT_HIDINPUT_FORCE BIT(1) 326 #define HID_CONNECT_HIDRAW BIT(2) 327 #define HID_CONNECT_HIDDEV BIT(3) 328 #define HID_CONNECT_HIDDEV_FORCE BIT(4) 329 #define HID_CONNECT_FF BIT(5) 330 #define HID_CONNECT_DRIVER BIT(6) 331 #define HID_CONNECT_DEFAULT (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \ 332 HID_CONNECT_HIDDEV|HID_CONNECT_FF) 333 334 /* 335 * HID device quirks. 336 */ 337 338 /* 339 * Increase this if you need to configure more HID quirks at module load time 340 */ 341 #define MAX_USBHID_BOOT_QUIRKS 4 342 343 /* BIT(0) reserved for backward compatibility, was HID_QUIRK_INVERT */ 344 #define HID_QUIRK_NOTOUCH BIT(1) 345 #define HID_QUIRK_IGNORE BIT(2) 346 #define HID_QUIRK_NOGET BIT(3) 347 #define HID_QUIRK_HIDDEV_FORCE BIT(4) 348 #define HID_QUIRK_BADPAD BIT(5) 349 #define HID_QUIRK_MULTI_INPUT BIT(6) 350 #define HID_QUIRK_HIDINPUT_FORCE BIT(7) 351 /* BIT(8) reserved for backward compatibility, was HID_QUIRK_NO_EMPTY_INPUT */ 352 /* BIT(9) reserved for backward compatibility, was NO_INIT_INPUT_REPORTS */ 353 #define HID_QUIRK_ALWAYS_POLL BIT(10) 354 #define HID_QUIRK_INPUT_PER_APP BIT(11) 355 #define HID_QUIRK_X_INVERT BIT(12) 356 #define HID_QUIRK_Y_INVERT BIT(13) 357 #define HID_QUIRK_SKIP_OUTPUT_REPORTS BIT(16) 358 #define HID_QUIRK_SKIP_OUTPUT_REPORT_ID BIT(17) 359 #define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP BIT(18) 360 #define HID_QUIRK_HAVE_SPECIAL_DRIVER BIT(19) 361 #define HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE BIT(20) 362 #define HID_QUIRK_FULLSPEED_INTERVAL BIT(28) 363 #define HID_QUIRK_NO_INIT_REPORTS BIT(29) 364 #define HID_QUIRK_NO_IGNORE BIT(30) 365 #define HID_QUIRK_NO_INPUT_SYNC BIT(31) 366 367 /* 368 * HID device groups 369 * 370 * Note: HID_GROUP_ANY is declared in linux/mod_devicetable.h 371 * and has a value of 0x0000 372 */ 373 #define HID_GROUP_GENERIC 0x0001 374 #define HID_GROUP_MULTITOUCH 0x0002 375 #define HID_GROUP_SENSOR_HUB 0x0003 376 #define HID_GROUP_MULTITOUCH_WIN_8 0x0004 377 378 /* 379 * Vendor specific HID device groups 380 */ 381 #define HID_GROUP_RMI 0x0100 382 #define HID_GROUP_WACOM 0x0101 383 #define HID_GROUP_LOGITECH_DJ_DEVICE 0x0102 384 #define HID_GROUP_STEAM 0x0103 385 #define HID_GROUP_LOGITECH_27MHZ_DEVICE 0x0104 386 #define HID_GROUP_VIVALDI 0x0105 387 388 /* 389 * HID protocol status 390 */ 391 #define HID_REPORT_PROTOCOL 1 392 #define HID_BOOT_PROTOCOL 0 393 394 /* 395 * This is the global environment of the parser. This information is 396 * persistent for main-items. The global environment can be saved and 397 * restored with PUSH/POP statements. 398 */ 399 400 struct hid_global { 401 unsigned usage_page; 402 __s32 logical_minimum; 403 __s32 logical_maximum; 404 __s32 physical_minimum; 405 __s32 physical_maximum; 406 __s32 unit_exponent; 407 unsigned unit; 408 unsigned report_id; 409 unsigned report_size; 410 unsigned report_count; 411 }; 412 413 /* 414 * This is the local environment. It is persistent up the next main-item. 415 */ 416 417 #define HID_MAX_USAGES 12288 418 #define HID_DEFAULT_NUM_COLLECTIONS 16 419 420 struct hid_local { 421 unsigned usage[HID_MAX_USAGES]; /* usage array */ 422 u8 usage_size[HID_MAX_USAGES]; /* usage size array */ 423 unsigned collection_index[HID_MAX_USAGES]; /* collection index array */ 424 unsigned usage_index; 425 unsigned usage_minimum; 426 unsigned delimiter_depth; 427 unsigned delimiter_branch; 428 }; 429 430 /* 431 * This is the collection stack. We climb up the stack to determine 432 * application and function of each field. 433 */ 434 435 struct hid_collection { 436 int parent_idx; /* device->collection */ 437 unsigned type; 438 unsigned usage; 439 unsigned level; 440 }; 441 442 struct hid_usage { 443 unsigned hid; /* hid usage code */ 444 unsigned collection_index; /* index into collection array */ 445 unsigned usage_index; /* index into usage array */ 446 __s8 resolution_multiplier;/* Effective Resolution Multiplier 447 (HUT v1.12, 4.3.1), default: 1 */ 448 /* hidinput data */ 449 __s8 wheel_factor; /* 120/resolution_multiplier */ 450 __u16 code; /* input driver code */ 451 __u8 type; /* input driver type */ 452 __s8 hat_min; /* hat switch fun */ 453 __s8 hat_max; /* ditto */ 454 __s8 hat_dir; /* ditto */ 455 __s16 wheel_accumulated; /* hi-res wheel */ 456 }; 457 458 struct hid_input; 459 460 struct hid_field { 461 unsigned physical; /* physical usage for this field */ 462 unsigned logical; /* logical usage for this field */ 463 unsigned application; /* application usage for this field */ 464 struct hid_usage *usage; /* usage table for this function */ 465 unsigned maxusage; /* maximum usage index */ 466 unsigned flags; /* main-item flags (i.e. volatile,array,constant) */ 467 unsigned report_offset; /* bit offset in the report */ 468 unsigned report_size; /* size of this field in the report */ 469 unsigned report_count; /* number of this field in the report */ 470 unsigned report_type; /* (input,output,feature) */ 471 __s32 *value; /* last known value(s) */ 472 __s32 *new_value; /* newly read value(s) */ 473 __s32 *usages_priorities; /* priority of each usage when reading the report 474 * bits 8-16 are reserved for hid-input usage 475 */ 476 __s32 logical_minimum; 477 __s32 logical_maximum; 478 __s32 physical_minimum; 479 __s32 physical_maximum; 480 __s32 unit_exponent; 481 unsigned unit; 482 bool ignored; /* this field is ignored in this event */ 483 struct hid_report *report; /* associated report */ 484 unsigned index; /* index into report->field[] */ 485 /* hidinput data */ 486 struct hid_input *hidinput; /* associated input structure */ 487 __u16 dpad; /* dpad input code */ 488 unsigned int slot_idx; /* slot index in a report */ 489 }; 490 491 #define HID_MAX_FIELDS 256 492 493 struct hid_field_entry { 494 struct list_head list; 495 struct hid_field *field; 496 unsigned int index; 497 __s32 priority; 498 }; 499 500 struct hid_report { 501 struct list_head list; 502 struct list_head hidinput_list; 503 struct list_head field_entry_list; /* ordered list of input fields */ 504 unsigned int id; /* id of this report */ 505 enum hid_report_type type; /* report type */ 506 unsigned int application; /* application usage for this report */ 507 struct hid_field *field[HID_MAX_FIELDS]; /* fields of the report */ 508 struct hid_field_entry *field_entries; /* allocated memory of input field_entry */ 509 unsigned maxfield; /* maximum valid field index */ 510 unsigned size; /* size of the report (bits) */ 511 struct hid_device *device; /* associated device */ 512 513 /* tool related state */ 514 bool tool_active; /* whether the current tool is active */ 515 unsigned int tool; /* BTN_TOOL_* */ 516 }; 517 518 #define HID_MAX_IDS 256 519 520 struct hid_report_enum { 521 unsigned numbered; 522 struct list_head report_list; 523 struct hid_report *report_id_hash[HID_MAX_IDS]; 524 }; 525 526 #define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */ 527 #define HID_MAX_BUFFER_SIZE 16384 /* 16kb */ 528 #define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */ 529 #define HID_OUTPUT_FIFO_SIZE 64 530 531 struct hid_control_fifo { 532 unsigned char dir; 533 struct hid_report *report; 534 char *raw_report; 535 }; 536 537 struct hid_output_fifo { 538 struct hid_report *report; 539 char *raw_report; 540 }; 541 542 #define HID_CLAIMED_INPUT BIT(0) 543 #define HID_CLAIMED_HIDDEV BIT(1) 544 #define HID_CLAIMED_HIDRAW BIT(2) 545 #define HID_CLAIMED_DRIVER BIT(3) 546 547 #define HID_STAT_ADDED BIT(0) 548 #define HID_STAT_PARSED BIT(1) 549 #define HID_STAT_DUP_DETECTED BIT(2) 550 #define HID_STAT_REPROBED BIT(3) 551 552 struct hid_input { 553 struct list_head list; 554 struct hid_report *report; 555 struct input_dev *input; 556 const char *name; 557 bool registered; 558 struct list_head reports; /* the list of reports */ 559 unsigned int application; /* application usage for this input */ 560 }; 561 562 enum hid_type { 563 HID_TYPE_OTHER = 0, 564 HID_TYPE_USBMOUSE, 565 HID_TYPE_USBNONE 566 }; 567 568 enum hid_battery_status { 569 HID_BATTERY_UNKNOWN = 0, 570 HID_BATTERY_QUERIED, /* Kernel explicitly queried battery strength */ 571 HID_BATTERY_REPORTED, /* Device sent unsolicited battery strength report */ 572 }; 573 574 struct hid_driver; 575 struct hid_ll_driver; 576 577 struct hid_device { /* device report descriptor */ 578 __u8 *dev_rdesc; 579 unsigned dev_rsize; 580 __u8 *rdesc; 581 unsigned rsize; 582 struct hid_collection *collection; /* List of HID collections */ 583 unsigned collection_size; /* Number of allocated hid_collections */ 584 unsigned maxcollection; /* Number of parsed collections */ 585 unsigned maxapplication; /* Number of applications */ 586 __u16 bus; /* BUS ID */ 587 __u16 group; /* Report group */ 588 __u32 vendor; /* Vendor ID */ 589 __u32 product; /* Product ID */ 590 __u32 version; /* HID version */ 591 enum hid_type type; /* device type (mouse, kbd, ...) */ 592 unsigned country; /* HID country */ 593 struct hid_report_enum report_enum[HID_REPORT_TYPES]; 594 struct work_struct led_work; /* delayed LED worker */ 595 596 struct semaphore driver_input_lock; /* protects the current driver */ 597 struct device dev; /* device */ 598 struct hid_driver *driver; 599 600 const struct hid_ll_driver *ll_driver; 601 struct mutex ll_open_lock; 602 unsigned int ll_open_count; 603 604 #ifdef CONFIG_HID_BATTERY_STRENGTH 605 /* 606 * Power supply information for HID devices which report 607 * battery strength. power_supply was successfully registered if 608 * battery is non-NULL. 609 */ 610 struct power_supply *battery; 611 __s32 battery_capacity; 612 __s32 battery_min; 613 __s32 battery_max; 614 __s32 battery_report_type; 615 __s32 battery_report_id; 616 __s32 battery_charge_status; 617 enum hid_battery_status battery_status; 618 bool battery_avoid_query; 619 ktime_t battery_ratelimit_time; 620 #endif 621 622 unsigned long status; /* see STAT flags above */ 623 unsigned claimed; /* Claimed by hidinput, hiddev? */ 624 unsigned quirks; /* Various quirks the device can pull on us */ 625 unsigned initial_quirks; /* Initial set of quirks supplied when creating device */ 626 bool io_started; /* If IO has started */ 627 628 struct list_head inputs; /* The list of inputs */ 629 void *hiddev; /* The hiddev structure */ 630 void *hidraw; 631 632 char name[128]; /* Device name */ 633 char phys[64]; /* Device physical location */ 634 char uniq[64]; /* Device unique identifier (serial #) */ 635 636 void *driver_data; 637 638 /* temporary hid_ff handling (until moved to the drivers) */ 639 int (*ff_init)(struct hid_device *); 640 641 /* hiddev event handler */ 642 int (*hiddev_connect)(struct hid_device *, unsigned int); 643 void (*hiddev_disconnect)(struct hid_device *); 644 void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field, 645 struct hid_usage *, __s32); 646 void (*hiddev_report_event) (struct hid_device *, struct hid_report *); 647 648 /* debugging support via debugfs */ 649 unsigned short debug; 650 struct dentry *debug_dir; 651 struct dentry *debug_rdesc; 652 struct dentry *debug_events; 653 struct list_head debug_list; 654 spinlock_t debug_list_lock; 655 wait_queue_head_t debug_wait; 656 657 unsigned int id; /* system unique id */ 658 659 #ifdef CONFIG_BPF 660 struct hid_bpf bpf; /* hid-bpf data */ 661 #endif /* CONFIG_BPF */ 662 }; 663 664 #define to_hid_device(pdev) \ 665 container_of(pdev, struct hid_device, dev) 666 667 static inline void *hid_get_drvdata(struct hid_device *hdev) 668 { 669 return dev_get_drvdata(&hdev->dev); 670 } 671 672 static inline void hid_set_drvdata(struct hid_device *hdev, void *data) 673 { 674 dev_set_drvdata(&hdev->dev, data); 675 } 676 677 #define HID_GLOBAL_STACK_SIZE 4 678 #define HID_COLLECTION_STACK_SIZE 4 679 680 #define HID_SCAN_FLAG_MT_WIN_8 BIT(0) 681 #define HID_SCAN_FLAG_VENDOR_SPECIFIC BIT(1) 682 #define HID_SCAN_FLAG_GD_POINTER BIT(2) 683 684 struct hid_parser { 685 struct hid_global global; 686 struct hid_global global_stack[HID_GLOBAL_STACK_SIZE]; 687 unsigned int global_stack_ptr; 688 struct hid_local local; 689 unsigned int *collection_stack; 690 unsigned int collection_stack_ptr; 691 unsigned int collection_stack_size; 692 struct hid_device *device; 693 unsigned int scan_flags; 694 }; 695 696 struct hid_class_descriptor { 697 __u8 bDescriptorType; 698 __le16 wDescriptorLength; 699 } __attribute__ ((packed)); 700 701 struct hid_descriptor { 702 __u8 bLength; 703 __u8 bDescriptorType; 704 __le16 bcdHID; 705 __u8 bCountryCode; 706 __u8 bNumDescriptors; 707 708 struct hid_class_descriptor desc[1]; 709 } __attribute__ ((packed)); 710 711 #define HID_DEVICE(b, g, ven, prod) \ 712 .bus = (b), .group = (g), .vendor = (ven), .product = (prod) 713 #define HID_USB_DEVICE(ven, prod) \ 714 .bus = BUS_USB, .vendor = (ven), .product = (prod) 715 #define HID_BLUETOOTH_DEVICE(ven, prod) \ 716 .bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod) 717 #define HID_I2C_DEVICE(ven, prod) \ 718 .bus = BUS_I2C, .vendor = (ven), .product = (prod) 719 720 #define HID_REPORT_ID(rep) \ 721 .report_type = (rep) 722 #define HID_USAGE_ID(uhid, utype, ucode) \ 723 .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode) 724 /* we don't want to catch types and codes equal to 0 */ 725 #define HID_TERMINATOR (HID_ANY_ID - 1) 726 727 struct hid_report_id { 728 __u32 report_type; 729 }; 730 struct hid_usage_id { 731 __u32 usage_hid; 732 __u32 usage_type; 733 __u32 usage_code; 734 }; 735 736 /** 737 * struct hid_driver 738 * @name: driver name (e.g. "Footech_bar-wheel") 739 * @id_table: which devices is this driver for (must be non-NULL for probe 740 * to be called) 741 * @dyn_list: list of dynamically added device ids 742 * @dyn_lock: lock protecting @dyn_list 743 * @match: check if the given device is handled by this driver 744 * @probe: new device inserted 745 * @remove: device removed (NULL if not a hot-plug capable driver) 746 * @report_table: on which reports to call raw_event (NULL means all) 747 * @raw_event: if report in report_table, this hook is called (NULL means nop) 748 * @usage_table: on which events to call event (NULL means all) 749 * @event: if usage in usage_table, this hook is called (NULL means nop) 750 * @report: this hook is called after parsing a report (NULL means nop) 751 * @report_fixup: called before report descriptor parsing (NULL means nop) 752 * @input_mapping: invoked on input registering before mapping an usage 753 * @input_mapped: invoked on input registering after mapping an usage 754 * @input_configured: invoked just before the device is registered 755 * @feature_mapping: invoked on feature registering 756 * @suspend: invoked on suspend (NULL means nop) 757 * @resume: invoked on resume if device was not reset (NULL means nop) 758 * @reset_resume: invoked on resume if device was reset (NULL means nop) 759 * 760 * probe should return -errno on error, or 0 on success. During probe, 761 * input will not be passed to raw_event unless hid_device_io_start is 762 * called. 763 * 764 * raw_event and event should return negative on error, any other value will 765 * pass the event on to .event() typically return 0 for success. 766 * 767 * input_mapping shall return a negative value to completely ignore this usage 768 * (e.g. doubled or invalid usage), zero to continue with parsing of this 769 * usage by generic code (no special handling needed) or positive to skip 770 * generic parsing (needed special handling which was done in the hook already) 771 * input_mapped shall return negative to inform the layer that this usage 772 * should not be considered for further processing or zero to notify that 773 * no processing was performed and should be done in a generic manner 774 * Both these functions may be NULL which means the same behavior as returning 775 * zero from them. 776 */ 777 struct hid_driver { 778 char *name; 779 const struct hid_device_id *id_table; 780 781 struct list_head dyn_list; 782 spinlock_t dyn_lock; 783 784 bool (*match)(struct hid_device *dev, bool ignore_special_driver); 785 int (*probe)(struct hid_device *dev, const struct hid_device_id *id); 786 void (*remove)(struct hid_device *dev); 787 788 const struct hid_report_id *report_table; 789 int (*raw_event)(struct hid_device *hdev, struct hid_report *report, 790 u8 *data, int size); 791 const struct hid_usage_id *usage_table; 792 int (*event)(struct hid_device *hdev, struct hid_field *field, 793 struct hid_usage *usage, __s32 value); 794 void (*report)(struct hid_device *hdev, struct hid_report *report); 795 796 __u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf, 797 unsigned int *size); 798 799 int (*input_mapping)(struct hid_device *hdev, 800 struct hid_input *hidinput, struct hid_field *field, 801 struct hid_usage *usage, unsigned long **bit, int *max); 802 int (*input_mapped)(struct hid_device *hdev, 803 struct hid_input *hidinput, struct hid_field *field, 804 struct hid_usage *usage, unsigned long **bit, int *max); 805 int (*input_configured)(struct hid_device *hdev, 806 struct hid_input *hidinput); 807 void (*feature_mapping)(struct hid_device *hdev, 808 struct hid_field *field, 809 struct hid_usage *usage); 810 #ifdef CONFIG_PM 811 int (*suspend)(struct hid_device *hdev, pm_message_t message); 812 int (*resume)(struct hid_device *hdev); 813 int (*reset_resume)(struct hid_device *hdev); 814 #endif 815 /* private: */ 816 struct device_driver driver; 817 }; 818 819 #define to_hid_driver(pdrv) \ 820 container_of(pdrv, struct hid_driver, driver) 821 822 /** 823 * struct hid_ll_driver - low level driver callbacks 824 * @start: called on probe to start the device 825 * @stop: called on remove 826 * @open: called by input layer on open 827 * @close: called by input layer on close 828 * @power: request underlying hardware to enter requested power mode 829 * @parse: this method is called only once to parse the device data, 830 * shouldn't allocate anything to not leak memory 831 * @request: send report request to device (e.g. feature report) 832 * @wait: wait for buffered io to complete (send/recv reports) 833 * @raw_request: send raw report request to device (e.g. feature report) 834 * @output_report: send output report to device 835 * @idle: send idle request to device 836 * @may_wakeup: return if device may act as a wakeup source during system-suspend 837 * @max_buffer_size: over-ride maximum data buffer size (default: HID_MAX_BUFFER_SIZE) 838 */ 839 struct hid_ll_driver { 840 int (*start)(struct hid_device *hdev); 841 void (*stop)(struct hid_device *hdev); 842 843 int (*open)(struct hid_device *hdev); 844 void (*close)(struct hid_device *hdev); 845 846 int (*power)(struct hid_device *hdev, int level); 847 848 int (*parse)(struct hid_device *hdev); 849 850 void (*request)(struct hid_device *hdev, 851 struct hid_report *report, int reqtype); 852 853 int (*wait)(struct hid_device *hdev); 854 855 int (*raw_request) (struct hid_device *hdev, unsigned char reportnum, 856 __u8 *buf, size_t len, unsigned char rtype, 857 int reqtype); 858 859 int (*output_report) (struct hid_device *hdev, __u8 *buf, size_t len); 860 861 int (*idle)(struct hid_device *hdev, int report, int idle, int reqtype); 862 bool (*may_wakeup)(struct hid_device *hdev); 863 864 unsigned int max_buffer_size; 865 }; 866 867 extern bool hid_is_usb(const struct hid_device *hdev); 868 869 #define PM_HINT_FULLON 1<<5 870 #define PM_HINT_NORMAL 1<<1 871 872 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */ 873 /* We ignore a few input applications that are not widely used */ 874 #define IS_INPUT_APPLICATION(a) \ 875 (((a >= HID_UP_GENDESK) && (a <= HID_GD_MULTIAXIS)) \ 876 || ((a >= HID_DG_PEN) && (a <= HID_DG_WHITEBOARD)) \ 877 || (a == HID_GD_SYSTEM_CONTROL) || (a == HID_CP_CONSUMER_CONTROL) \ 878 || (a == HID_GD_WIRELESS_RADIO_CTLS)) 879 880 /* HID core API */ 881 882 extern bool hid_ignore(struct hid_device *); 883 extern int hid_add_device(struct hid_device *); 884 extern void hid_destroy_device(struct hid_device *); 885 886 extern struct bus_type hid_bus_type; 887 888 extern int __must_check __hid_register_driver(struct hid_driver *, 889 struct module *, const char *mod_name); 890 891 /* use a define to avoid include chaining to get THIS_MODULE & friends */ 892 #define hid_register_driver(driver) \ 893 __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) 894 895 extern void hid_unregister_driver(struct hid_driver *); 896 897 /** 898 * module_hid_driver() - Helper macro for registering a HID driver 899 * @__hid_driver: hid_driver struct 900 * 901 * Helper macro for HID drivers which do not do anything special in module 902 * init/exit. This eliminates a lot of boilerplate. Each module may only 903 * use this macro once, and calling it replaces module_init() and module_exit() 904 */ 905 #define module_hid_driver(__hid_driver) \ 906 module_driver(__hid_driver, hid_register_driver, \ 907 hid_unregister_driver) 908 909 extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32); 910 extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report); 911 extern int hidinput_connect(struct hid_device *hid, unsigned int force); 912 extern void hidinput_disconnect(struct hid_device *); 913 914 int hid_set_field(struct hid_field *, unsigned, __s32); 915 int hid_input_report(struct hid_device *hid, enum hid_report_type type, u8 *data, u32 size, 916 int interrupt); 917 struct hid_field *hidinput_get_led_field(struct hid_device *hid); 918 unsigned int hidinput_count_leds(struct hid_device *hid); 919 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code); 920 void hid_output_report(struct hid_report *report, __u8 *data); 921 int __hid_request(struct hid_device *hid, struct hid_report *rep, enum hid_class_request reqtype); 922 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags); 923 struct hid_device *hid_allocate_device(void); 924 struct hid_report *hid_register_report(struct hid_device *device, 925 enum hid_report_type type, unsigned int id, 926 unsigned int application); 927 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size); 928 struct hid_report *hid_validate_values(struct hid_device *hid, 929 enum hid_report_type type, unsigned int id, 930 unsigned int field_index, 931 unsigned int report_counts); 932 933 void hid_setup_resolution_multiplier(struct hid_device *hid); 934 int hid_open_report(struct hid_device *device); 935 int hid_check_keys_pressed(struct hid_device *hid); 936 int hid_connect(struct hid_device *hid, unsigned int connect_mask); 937 void hid_disconnect(struct hid_device *hid); 938 bool hid_match_one_id(const struct hid_device *hdev, 939 const struct hid_device_id *id); 940 const struct hid_device_id *hid_match_id(const struct hid_device *hdev, 941 const struct hid_device_id *id); 942 const struct hid_device_id *hid_match_device(struct hid_device *hdev, 943 struct hid_driver *hdrv); 944 bool hid_compare_device_paths(struct hid_device *hdev_a, 945 struct hid_device *hdev_b, char separator); 946 s32 hid_snto32(__u32 value, unsigned n); 947 __u32 hid_field_extract(const struct hid_device *hid, __u8 *report, 948 unsigned offset, unsigned n); 949 950 #ifdef CONFIG_PM 951 int hid_driver_suspend(struct hid_device *hdev, pm_message_t state); 952 int hid_driver_reset_resume(struct hid_device *hdev); 953 int hid_driver_resume(struct hid_device *hdev); 954 #else 955 static inline int hid_driver_suspend(struct hid_device *hdev, pm_message_t state) { return 0; } 956 static inline int hid_driver_reset_resume(struct hid_device *hdev) { return 0; } 957 static inline int hid_driver_resume(struct hid_device *hdev) { return 0; } 958 #endif 959 960 /** 961 * hid_device_io_start - enable HID input during probe, remove 962 * 963 * @hid: the device 964 * 965 * This should only be called during probe or remove and only be 966 * called by the thread calling probe or remove. It will allow 967 * incoming packets to be delivered to the driver. 968 */ 969 static inline void hid_device_io_start(struct hid_device *hid) { 970 if (hid->io_started) { 971 dev_warn(&hid->dev, "io already started\n"); 972 return; 973 } 974 hid->io_started = true; 975 up(&hid->driver_input_lock); 976 } 977 978 /** 979 * hid_device_io_stop - disable HID input during probe, remove 980 * 981 * @hid: the device 982 * 983 * Should only be called after hid_device_io_start. It will prevent 984 * incoming packets from going to the driver for the duration of 985 * probe, remove. If called during probe, packets will still go to the 986 * driver after probe is complete. This function should only be called 987 * by the thread calling probe or remove. 988 */ 989 static inline void hid_device_io_stop(struct hid_device *hid) { 990 if (!hid->io_started) { 991 dev_warn(&hid->dev, "io already stopped\n"); 992 return; 993 } 994 hid->io_started = false; 995 down(&hid->driver_input_lock); 996 } 997 998 /** 999 * hid_map_usage - map usage input bits 1000 * 1001 * @hidinput: hidinput which we are interested in 1002 * @usage: usage to fill in 1003 * @bit: pointer to input->{}bit (out parameter) 1004 * @max: maximal valid usage->code to consider later (out parameter) 1005 * @type: input event type (EV_KEY, EV_REL, ...) 1006 * @c: code which corresponds to this usage and type 1007 * 1008 * The value pointed to by @bit will be set to NULL if either @type is 1009 * an unhandled event type, or if @c is out of range for @type. This 1010 * can be used as an error condition. 1011 */ 1012 static inline void hid_map_usage(struct hid_input *hidinput, 1013 struct hid_usage *usage, unsigned long **bit, int *max, 1014 __u8 type, unsigned int c) 1015 { 1016 struct input_dev *input = hidinput->input; 1017 unsigned long *bmap = NULL; 1018 unsigned int limit = 0; 1019 1020 switch (type) { 1021 case EV_ABS: 1022 bmap = input->absbit; 1023 limit = ABS_MAX; 1024 break; 1025 case EV_REL: 1026 bmap = input->relbit; 1027 limit = REL_MAX; 1028 break; 1029 case EV_KEY: 1030 bmap = input->keybit; 1031 limit = KEY_MAX; 1032 break; 1033 case EV_LED: 1034 bmap = input->ledbit; 1035 limit = LED_MAX; 1036 break; 1037 case EV_MSC: 1038 bmap = input->mscbit; 1039 limit = MSC_MAX; 1040 break; 1041 } 1042 1043 if (unlikely(c > limit || !bmap)) { 1044 pr_warn_ratelimited("%s: Invalid code %d type %d\n", 1045 input->name, c, type); 1046 *bit = NULL; 1047 return; 1048 } 1049 1050 usage->type = type; 1051 usage->code = c; 1052 *max = limit; 1053 *bit = bmap; 1054 } 1055 1056 /** 1057 * hid_map_usage_clear - map usage input bits and clear the input bit 1058 * 1059 * @hidinput: hidinput which we are interested in 1060 * @usage: usage to fill in 1061 * @bit: pointer to input->{}bit (out parameter) 1062 * @max: maximal valid usage->code to consider later (out parameter) 1063 * @type: input event type (EV_KEY, EV_REL, ...) 1064 * @c: code which corresponds to this usage and type 1065 * 1066 * The same as hid_map_usage, except the @c bit is also cleared in supported 1067 * bits (@bit). 1068 */ 1069 static inline void hid_map_usage_clear(struct hid_input *hidinput, 1070 struct hid_usage *usage, unsigned long **bit, int *max, 1071 __u8 type, __u16 c) 1072 { 1073 hid_map_usage(hidinput, usage, bit, max, type, c); 1074 if (*bit) 1075 clear_bit(usage->code, *bit); 1076 } 1077 1078 /** 1079 * hid_parse - parse HW reports 1080 * 1081 * @hdev: hid device 1082 * 1083 * Call this from probe after you set up the device (if needed). Your 1084 * report_fixup will be called (if non-NULL) after reading raw report from 1085 * device before passing it to hid layer for real parsing. 1086 */ 1087 static inline int __must_check hid_parse(struct hid_device *hdev) 1088 { 1089 return hid_open_report(hdev); 1090 } 1091 1092 int __must_check hid_hw_start(struct hid_device *hdev, 1093 unsigned int connect_mask); 1094 void hid_hw_stop(struct hid_device *hdev); 1095 int __must_check hid_hw_open(struct hid_device *hdev); 1096 void hid_hw_close(struct hid_device *hdev); 1097 void hid_hw_request(struct hid_device *hdev, 1098 struct hid_report *report, enum hid_class_request reqtype); 1099 int hid_hw_raw_request(struct hid_device *hdev, 1100 unsigned char reportnum, __u8 *buf, 1101 size_t len, enum hid_report_type rtype, 1102 enum hid_class_request reqtype); 1103 int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, size_t len); 1104 1105 /** 1106 * hid_hw_power - requests underlying HW to go into given power mode 1107 * 1108 * @hdev: hid device 1109 * @level: requested power level (one of %PM_HINT_* defines) 1110 * 1111 * This function requests underlying hardware to enter requested power 1112 * mode. 1113 */ 1114 1115 static inline int hid_hw_power(struct hid_device *hdev, int level) 1116 { 1117 return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0; 1118 } 1119 1120 1121 /** 1122 * hid_hw_idle - send idle request to device 1123 * 1124 * @hdev: hid device 1125 * @report: report to control 1126 * @idle: idle state 1127 * @reqtype: hid request type 1128 */ 1129 static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle, 1130 enum hid_class_request reqtype) 1131 { 1132 if (hdev->ll_driver->idle) 1133 return hdev->ll_driver->idle(hdev, report, idle, reqtype); 1134 1135 return 0; 1136 } 1137 1138 /** 1139 * hid_hw_may_wakeup - return if the hid device may act as a wakeup source during system-suspend 1140 * 1141 * @hdev: hid device 1142 */ 1143 static inline bool hid_hw_may_wakeup(struct hid_device *hdev) 1144 { 1145 if (hdev->ll_driver->may_wakeup) 1146 return hdev->ll_driver->may_wakeup(hdev); 1147 1148 if (hdev->dev.parent) 1149 return device_may_wakeup(hdev->dev.parent); 1150 1151 return false; 1152 } 1153 1154 /** 1155 * hid_hw_wait - wait for buffered io to complete 1156 * 1157 * @hdev: hid device 1158 */ 1159 static inline void hid_hw_wait(struct hid_device *hdev) 1160 { 1161 if (hdev->ll_driver->wait) 1162 hdev->ll_driver->wait(hdev); 1163 } 1164 1165 /** 1166 * hid_report_len - calculate the report length 1167 * 1168 * @report: the report we want to know the length 1169 */ 1170 static inline u32 hid_report_len(struct hid_report *report) 1171 { 1172 return DIV_ROUND_UP(report->size, 8) + (report->id > 0); 1173 } 1174 1175 int hid_report_raw_event(struct hid_device *hid, enum hid_report_type type, u8 *data, u32 size, 1176 int interrupt); 1177 1178 /* HID quirks API */ 1179 unsigned long hid_lookup_quirk(const struct hid_device *hdev); 1180 int hid_quirks_init(char **quirks_param, __u16 bus, int count); 1181 void hid_quirks_exit(__u16 bus); 1182 1183 #ifdef CONFIG_HID_PID 1184 int hid_pidff_init(struct hid_device *hid); 1185 #else 1186 #define hid_pidff_init NULL 1187 #endif 1188 1189 #define dbg_hid(fmt, ...) pr_debug("%s: " fmt, __FILE__, ##__VA_ARGS__) 1190 1191 #define hid_err(hid, fmt, ...) \ 1192 dev_err(&(hid)->dev, fmt, ##__VA_ARGS__) 1193 #define hid_notice(hid, fmt, ...) \ 1194 dev_notice(&(hid)->dev, fmt, ##__VA_ARGS__) 1195 #define hid_warn(hid, fmt, ...) \ 1196 dev_warn(&(hid)->dev, fmt, ##__VA_ARGS__) 1197 #define hid_info(hid, fmt, ...) \ 1198 dev_info(&(hid)->dev, fmt, ##__VA_ARGS__) 1199 #define hid_dbg(hid, fmt, ...) \ 1200 dev_dbg(&(hid)->dev, fmt, ##__VA_ARGS__) 1201 1202 #define hid_err_once(hid, fmt, ...) \ 1203 dev_err_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1204 #define hid_notice_once(hid, fmt, ...) \ 1205 dev_notice_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1206 #define hid_warn_once(hid, fmt, ...) \ 1207 dev_warn_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1208 #define hid_info_once(hid, fmt, ...) \ 1209 dev_info_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1210 #define hid_dbg_once(hid, fmt, ...) \ 1211 dev_dbg_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1212 1213 #endif 1214