1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (c) 1999 Andreas Gal 4 * Copyright (c) 2000-2001 Vojtech Pavlik 5 * Copyright (c) 2006-2007 Jiri Kosina 6 */ 7 /* 8 * 9 * Should you need to contact me, the author, you can do so either by 10 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 11 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 12 */ 13 #ifndef __HID_H 14 #define __HID_H 15 16 17 #include <linux/bitops.h> 18 #include <linux/types.h> 19 #include <linux/slab.h> 20 #include <linux/list.h> 21 #include <linux/mod_devicetable.h> /* hid_device_id */ 22 #include <linux/timer.h> 23 #include <linux/workqueue.h> 24 #include <linux/input.h> 25 #include <linux/semaphore.h> 26 #include <linux/mutex.h> 27 #include <linux/power_supply.h> 28 #include <uapi/linux/hid.h> 29 30 /* 31 * We parse each description item into this structure. Short items data 32 * values are expanded to 32-bit signed int, long items contain a pointer 33 * into the data area. 34 */ 35 36 struct hid_item { 37 unsigned format; 38 __u8 size; 39 __u8 type; 40 __u8 tag; 41 union { 42 __u8 u8; 43 __s8 s8; 44 __u16 u16; 45 __s16 s16; 46 __u32 u32; 47 __s32 s32; 48 __u8 *longdata; 49 } data; 50 }; 51 52 /* 53 * HID report item format 54 */ 55 56 #define HID_ITEM_FORMAT_SHORT 0 57 #define HID_ITEM_FORMAT_LONG 1 58 59 /* 60 * Special tag indicating long items 61 */ 62 63 #define HID_ITEM_TAG_LONG 15 64 65 /* 66 * HID report descriptor item type (prefix bit 2,3) 67 */ 68 69 #define HID_ITEM_TYPE_MAIN 0 70 #define HID_ITEM_TYPE_GLOBAL 1 71 #define HID_ITEM_TYPE_LOCAL 2 72 #define HID_ITEM_TYPE_RESERVED 3 73 74 /* 75 * HID report descriptor main item tags 76 */ 77 78 #define HID_MAIN_ITEM_TAG_INPUT 8 79 #define HID_MAIN_ITEM_TAG_OUTPUT 9 80 #define HID_MAIN_ITEM_TAG_FEATURE 11 81 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10 82 #define HID_MAIN_ITEM_TAG_END_COLLECTION 12 83 84 /* 85 * HID report descriptor main item contents 86 */ 87 88 #define HID_MAIN_ITEM_CONSTANT 0x001 89 #define HID_MAIN_ITEM_VARIABLE 0x002 90 #define HID_MAIN_ITEM_RELATIVE 0x004 91 #define HID_MAIN_ITEM_WRAP 0x008 92 #define HID_MAIN_ITEM_NONLINEAR 0x010 93 #define HID_MAIN_ITEM_NO_PREFERRED 0x020 94 #define HID_MAIN_ITEM_NULL_STATE 0x040 95 #define HID_MAIN_ITEM_VOLATILE 0x080 96 #define HID_MAIN_ITEM_BUFFERED_BYTE 0x100 97 98 /* 99 * HID report descriptor collection item types 100 */ 101 102 #define HID_COLLECTION_PHYSICAL 0 103 #define HID_COLLECTION_APPLICATION 1 104 #define HID_COLLECTION_LOGICAL 2 105 #define HID_COLLECTION_NAMED_ARRAY 4 106 107 /* 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_BATTERY 0x00850000 158 #define HID_UP_HPVENDOR 0xff7f0000 159 #define HID_UP_HPVENDOR2 0xff010000 160 #define HID_UP_MSVENDOR 0xff000000 161 #define HID_UP_CUSTOM 0x00ff0000 162 #define HID_UP_LOGIVENDOR 0xffbc0000 163 #define HID_UP_LOGIVENDOR2 0xff090000 164 #define HID_UP_LOGIVENDOR3 0xff430000 165 #define HID_UP_LNVENDOR 0xffa00000 166 #define HID_UP_SENSOR 0x00200000 167 #define HID_UP_ASUSVENDOR 0xff310000 168 #define HID_UP_GOOGLEVENDOR 0xffd10000 169 170 #define HID_USAGE 0x0000ffff 171 172 #define HID_GD_POINTER 0x00010001 173 #define HID_GD_MOUSE 0x00010002 174 #define HID_GD_JOYSTICK 0x00010004 175 #define HID_GD_GAMEPAD 0x00010005 176 #define HID_GD_KEYBOARD 0x00010006 177 #define HID_GD_KEYPAD 0x00010007 178 #define HID_GD_MULTIAXIS 0x00010008 179 /* 180 * Microsoft Win8 Wireless Radio Controls extensions CA, see: 181 * http://www.usb.org/developers/hidpage/HUTRR40RadioHIDUsagesFinal.pdf 182 */ 183 #define HID_GD_WIRELESS_RADIO_CTLS 0x0001000c 184 /* 185 * System Multi-Axis, see: 186 * http://www.usb.org/developers/hidpage/HUTRR62_-_Generic_Desktop_CA_for_System_Multi-Axis_Controllers.txt 187 */ 188 #define HID_GD_SYSTEM_MULTIAXIS 0x0001000e 189 190 #define HID_GD_X 0x00010030 191 #define HID_GD_Y 0x00010031 192 #define HID_GD_Z 0x00010032 193 #define HID_GD_RX 0x00010033 194 #define HID_GD_RY 0x00010034 195 #define HID_GD_RZ 0x00010035 196 #define HID_GD_SLIDER 0x00010036 197 #define HID_GD_DIAL 0x00010037 198 #define HID_GD_WHEEL 0x00010038 199 #define HID_GD_HATSWITCH 0x00010039 200 #define HID_GD_BUFFER 0x0001003a 201 #define HID_GD_BYTECOUNT 0x0001003b 202 #define HID_GD_MOTION 0x0001003c 203 #define HID_GD_START 0x0001003d 204 #define HID_GD_SELECT 0x0001003e 205 #define HID_GD_VX 0x00010040 206 #define HID_GD_VY 0x00010041 207 #define HID_GD_VZ 0x00010042 208 #define HID_GD_VBRX 0x00010043 209 #define HID_GD_VBRY 0x00010044 210 #define HID_GD_VBRZ 0x00010045 211 #define HID_GD_VNO 0x00010046 212 #define HID_GD_FEATURE 0x00010047 213 #define HID_GD_RESOLUTION_MULTIPLIER 0x00010048 214 #define HID_GD_SYSTEM_CONTROL 0x00010080 215 #define HID_GD_UP 0x00010090 216 #define HID_GD_DOWN 0x00010091 217 #define HID_GD_RIGHT 0x00010092 218 #define HID_GD_LEFT 0x00010093 219 /* Microsoft Win8 Wireless Radio Controls CA usage codes */ 220 #define HID_GD_RFKILL_BTN 0x000100c6 221 #define HID_GD_RFKILL_LED 0x000100c7 222 #define HID_GD_RFKILL_SWITCH 0x000100c8 223 224 #define HID_DC_BATTERYSTRENGTH 0x00060020 225 226 #define HID_CP_CONSUMER_CONTROL 0x000c0001 227 #define HID_CP_AC_PAN 0x000c0238 228 229 #define HID_DG_DIGITIZER 0x000d0001 230 #define HID_DG_PEN 0x000d0002 231 #define HID_DG_LIGHTPEN 0x000d0003 232 #define HID_DG_TOUCHSCREEN 0x000d0004 233 #define HID_DG_TOUCHPAD 0x000d0005 234 #define HID_DG_WHITEBOARD 0x000d0006 235 #define HID_DG_STYLUS 0x000d0020 236 #define HID_DG_PUCK 0x000d0021 237 #define HID_DG_FINGER 0x000d0022 238 #define HID_DG_TIPPRESSURE 0x000d0030 239 #define HID_DG_BARRELPRESSURE 0x000d0031 240 #define HID_DG_INRANGE 0x000d0032 241 #define HID_DG_TOUCH 0x000d0033 242 #define HID_DG_UNTOUCH 0x000d0034 243 #define HID_DG_TAP 0x000d0035 244 #define HID_DG_TRANSDUCER_INDEX 0x000d0038 245 #define HID_DG_TABLETFUNCTIONKEY 0x000d0039 246 #define HID_DG_PROGRAMCHANGEKEY 0x000d003a 247 #define HID_DG_BATTERYSTRENGTH 0x000d003b 248 #define HID_DG_INVERT 0x000d003c 249 #define HID_DG_TILT_X 0x000d003d 250 #define HID_DG_TILT_Y 0x000d003e 251 #define HID_DG_TWIST 0x000d0041 252 #define HID_DG_TIPSWITCH 0x000d0042 253 #define HID_DG_TIPSWITCH2 0x000d0043 254 #define HID_DG_BARRELSWITCH 0x000d0044 255 #define HID_DG_ERASER 0x000d0045 256 #define HID_DG_TABLETPICK 0x000d0046 257 #define HID_DG_PEN_COLOR 0x000d005c 258 #define HID_DG_PEN_LINE_WIDTH 0x000d005e 259 #define HID_DG_PEN_LINE_STYLE 0x000d0070 260 #define HID_DG_PEN_LINE_STYLE_INK 0x000d0072 261 #define HID_DG_PEN_LINE_STYLE_PENCIL 0x000d0073 262 #define HID_DG_PEN_LINE_STYLE_HIGHLIGHTER 0x000d0074 263 #define HID_DG_PEN_LINE_STYLE_CHISEL_MARKER 0x000d0075 264 #define HID_DG_PEN_LINE_STYLE_BRUSH 0x000d0076 265 #define HID_DG_PEN_LINE_STYLE_NO_PREFERENCE 0x000d0077 266 267 #define HID_CP_CONSUMERCONTROL 0x000c0001 268 #define HID_CP_NUMERICKEYPAD 0x000c0002 269 #define HID_CP_PROGRAMMABLEBUTTONS 0x000c0003 270 #define HID_CP_MICROPHONE 0x000c0004 271 #define HID_CP_HEADPHONE 0x000c0005 272 #define HID_CP_GRAPHICEQUALIZER 0x000c0006 273 #define HID_CP_FUNCTIONBUTTONS 0x000c0036 274 #define HID_CP_SELECTION 0x000c0080 275 #define HID_CP_MEDIASELECTION 0x000c0087 276 #define HID_CP_SELECTDISC 0x000c00ba 277 #define HID_CP_VOLUMEUP 0x000c00e9 278 #define HID_CP_VOLUMEDOWN 0x000c00ea 279 #define HID_CP_PLAYBACKSPEED 0x000c00f1 280 #define HID_CP_PROXIMITY 0x000c0109 281 #define HID_CP_SPEAKERSYSTEM 0x000c0160 282 #define HID_CP_CHANNELLEFT 0x000c0161 283 #define HID_CP_CHANNELRIGHT 0x000c0162 284 #define HID_CP_CHANNELCENTER 0x000c0163 285 #define HID_CP_CHANNELFRONT 0x000c0164 286 #define HID_CP_CHANNELCENTERFRONT 0x000c0165 287 #define HID_CP_CHANNELSIDE 0x000c0166 288 #define HID_CP_CHANNELSURROUND 0x000c0167 289 #define HID_CP_CHANNELLOWFREQUENCYENHANCEMENT 0x000c0168 290 #define HID_CP_CHANNELTOP 0x000c0169 291 #define HID_CP_CHANNELUNKNOWN 0x000c016a 292 #define HID_CP_APPLICATIONLAUNCHBUTTONS 0x000c0180 293 #define HID_CP_GENERICGUIAPPLICATIONCONTROLS 0x000c0200 294 295 #define HID_DG_DEVICECONFIG 0x000d000e 296 #define HID_DG_DEVICESETTINGS 0x000d0023 297 #define HID_DG_AZIMUTH 0x000d003f 298 #define HID_DG_CONFIDENCE 0x000d0047 299 #define HID_DG_WIDTH 0x000d0048 300 #define HID_DG_HEIGHT 0x000d0049 301 #define HID_DG_CONTACTID 0x000d0051 302 #define HID_DG_INPUTMODE 0x000d0052 303 #define HID_DG_DEVICEINDEX 0x000d0053 304 #define HID_DG_CONTACTCOUNT 0x000d0054 305 #define HID_DG_CONTACTMAX 0x000d0055 306 #define HID_DG_SCANTIME 0x000d0056 307 #define HID_DG_SURFACESWITCH 0x000d0057 308 #define HID_DG_BUTTONSWITCH 0x000d0058 309 #define HID_DG_BUTTONTYPE 0x000d0059 310 #define HID_DG_BARRELSWITCH2 0x000d005a 311 #define HID_DG_TOOLSERIALNUMBER 0x000d005b 312 #define HID_DG_LATENCYMODE 0x000d0060 313 314 #define HID_BAT_ABSOLUTESTATEOFCHARGE 0x00850065 315 316 #define HID_VD_ASUS_CUSTOM_MEDIA_KEYS 0xff310076 317 318 /* 319 * HID connect requests 320 */ 321 322 #define HID_CONNECT_HIDINPUT BIT(0) 323 #define HID_CONNECT_HIDINPUT_FORCE BIT(1) 324 #define HID_CONNECT_HIDRAW BIT(2) 325 #define HID_CONNECT_HIDDEV BIT(3) 326 #define HID_CONNECT_HIDDEV_FORCE BIT(4) 327 #define HID_CONNECT_FF BIT(5) 328 #define HID_CONNECT_DRIVER BIT(6) 329 #define HID_CONNECT_DEFAULT (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \ 330 HID_CONNECT_HIDDEV|HID_CONNECT_FF) 331 332 /* 333 * HID device quirks. 334 */ 335 336 /* 337 * Increase this if you need to configure more HID quirks at module load time 338 */ 339 #define MAX_USBHID_BOOT_QUIRKS 4 340 341 /* BIT(0) reserved for backward compatibility, was HID_QUIRK_INVERT */ 342 #define HID_QUIRK_NOTOUCH BIT(1) 343 #define HID_QUIRK_IGNORE BIT(2) 344 #define HID_QUIRK_NOGET BIT(3) 345 #define HID_QUIRK_HIDDEV_FORCE BIT(4) 346 #define HID_QUIRK_BADPAD BIT(5) 347 #define HID_QUIRK_MULTI_INPUT BIT(6) 348 #define HID_QUIRK_HIDINPUT_FORCE BIT(7) 349 /* BIT(8) reserved for backward compatibility, was HID_QUIRK_NO_EMPTY_INPUT */ 350 /* BIT(9) reserved for backward compatibility, was NO_INIT_INPUT_REPORTS */ 351 #define HID_QUIRK_ALWAYS_POLL BIT(10) 352 #define HID_QUIRK_INPUT_PER_APP BIT(11) 353 #define HID_QUIRK_X_INVERT BIT(12) 354 #define HID_QUIRK_Y_INVERT BIT(13) 355 #define HID_QUIRK_SKIP_OUTPUT_REPORTS BIT(16) 356 #define HID_QUIRK_SKIP_OUTPUT_REPORT_ID BIT(17) 357 #define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP BIT(18) 358 #define HID_QUIRK_HAVE_SPECIAL_DRIVER BIT(19) 359 #define HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE BIT(20) 360 #define HID_QUIRK_FULLSPEED_INTERVAL BIT(28) 361 #define HID_QUIRK_NO_INIT_REPORTS BIT(29) 362 #define HID_QUIRK_NO_IGNORE BIT(30) 363 #define HID_QUIRK_NO_INPUT_SYNC BIT(31) 364 365 /* 366 * HID device groups 367 * 368 * Note: HID_GROUP_ANY is declared in linux/mod_devicetable.h 369 * and has a value of 0x0000 370 */ 371 #define HID_GROUP_GENERIC 0x0001 372 #define HID_GROUP_MULTITOUCH 0x0002 373 #define HID_GROUP_SENSOR_HUB 0x0003 374 #define HID_GROUP_MULTITOUCH_WIN_8 0x0004 375 376 /* 377 * Vendor specific HID device groups 378 */ 379 #define HID_GROUP_RMI 0x0100 380 #define HID_GROUP_WACOM 0x0101 381 #define HID_GROUP_LOGITECH_DJ_DEVICE 0x0102 382 #define HID_GROUP_STEAM 0x0103 383 #define HID_GROUP_LOGITECH_27MHZ_DEVICE 0x0104 384 #define HID_GROUP_VIVALDI 0x0105 385 386 /* 387 * HID protocol status 388 */ 389 #define HID_REPORT_PROTOCOL 1 390 #define HID_BOOT_PROTOCOL 0 391 392 /* 393 * This is the global environment of the parser. This information is 394 * persistent for main-items. The global environment can be saved and 395 * restored with PUSH/POP statements. 396 */ 397 398 struct hid_global { 399 unsigned usage_page; 400 __s32 logical_minimum; 401 __s32 logical_maximum; 402 __s32 physical_minimum; 403 __s32 physical_maximum; 404 __s32 unit_exponent; 405 unsigned unit; 406 unsigned report_id; 407 unsigned report_size; 408 unsigned report_count; 409 }; 410 411 /* 412 * This is the local environment. It is persistent up the next main-item. 413 */ 414 415 #define HID_MAX_USAGES 12288 416 #define HID_DEFAULT_NUM_COLLECTIONS 16 417 418 struct hid_local { 419 unsigned usage[HID_MAX_USAGES]; /* usage array */ 420 u8 usage_size[HID_MAX_USAGES]; /* usage size array */ 421 unsigned collection_index[HID_MAX_USAGES]; /* collection index array */ 422 unsigned usage_index; 423 unsigned usage_minimum; 424 unsigned delimiter_depth; 425 unsigned delimiter_branch; 426 }; 427 428 /* 429 * This is the collection stack. We climb up the stack to determine 430 * application and function of each field. 431 */ 432 433 struct hid_collection { 434 int parent_idx; /* device->collection */ 435 unsigned type; 436 unsigned usage; 437 unsigned level; 438 }; 439 440 struct hid_usage { 441 unsigned hid; /* hid usage code */ 442 unsigned collection_index; /* index into collection array */ 443 unsigned usage_index; /* index into usage array */ 444 __s8 resolution_multiplier;/* Effective Resolution Multiplier 445 (HUT v1.12, 4.3.1), default: 1 */ 446 /* hidinput data */ 447 __s8 wheel_factor; /* 120/resolution_multiplier */ 448 __u16 code; /* input driver code */ 449 __u8 type; /* input driver type */ 450 __s8 hat_min; /* hat switch fun */ 451 __s8 hat_max; /* ditto */ 452 __s8 hat_dir; /* ditto */ 453 __s16 wheel_accumulated; /* hi-res wheel */ 454 }; 455 456 struct hid_input; 457 458 struct hid_field { 459 unsigned physical; /* physical usage for this field */ 460 unsigned logical; /* logical usage for this field */ 461 unsigned application; /* application usage for this field */ 462 struct hid_usage *usage; /* usage table for this function */ 463 unsigned maxusage; /* maximum usage index */ 464 unsigned flags; /* main-item flags (i.e. volatile,array,constant) */ 465 unsigned report_offset; /* bit offset in the report */ 466 unsigned report_size; /* size of this field in the report */ 467 unsigned report_count; /* number of this field in the report */ 468 unsigned report_type; /* (input,output,feature) */ 469 __s32 *value; /* last known value(s) */ 470 __s32 *new_value; /* newly read value(s) */ 471 __s32 *usages_priorities; /* priority of each usage when reading the report 472 * bits 8-16 are reserved for hid-input usage 473 */ 474 __s32 logical_minimum; 475 __s32 logical_maximum; 476 __s32 physical_minimum; 477 __s32 physical_maximum; 478 __s32 unit_exponent; 479 unsigned unit; 480 bool ignored; /* this field is ignored in this event */ 481 struct hid_report *report; /* associated report */ 482 unsigned index; /* index into report->field[] */ 483 /* hidinput data */ 484 struct hid_input *hidinput; /* associated input structure */ 485 __u16 dpad; /* dpad input code */ 486 unsigned int slot_idx; /* slot index in a report */ 487 }; 488 489 #define HID_MAX_FIELDS 256 490 491 struct hid_field_entry { 492 struct list_head list; 493 struct hid_field *field; 494 unsigned int index; 495 __s32 priority; 496 }; 497 498 struct hid_report { 499 struct list_head list; 500 struct list_head hidinput_list; 501 struct list_head field_entry_list; /* ordered list of input fields */ 502 unsigned int id; /* id of this report */ 503 enum hid_report_type type; /* report type */ 504 unsigned int application; /* application usage for this report */ 505 struct hid_field *field[HID_MAX_FIELDS]; /* fields of the report */ 506 struct hid_field_entry *field_entries; /* allocated memory of input field_entry */ 507 unsigned maxfield; /* maximum valid field index */ 508 unsigned size; /* size of the report (bits) */ 509 struct hid_device *device; /* associated device */ 510 511 /* tool related state */ 512 bool tool_active; /* whether the current tool is active */ 513 unsigned int tool; /* BTN_TOOL_* */ 514 }; 515 516 #define HID_MAX_IDS 256 517 518 struct hid_report_enum { 519 unsigned numbered; 520 struct list_head report_list; 521 struct hid_report *report_id_hash[HID_MAX_IDS]; 522 }; 523 524 #define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */ 525 #define HID_MAX_BUFFER_SIZE 16384 /* 16kb */ 526 #define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */ 527 #define HID_OUTPUT_FIFO_SIZE 64 528 529 struct hid_control_fifo { 530 unsigned char dir; 531 struct hid_report *report; 532 char *raw_report; 533 }; 534 535 struct hid_output_fifo { 536 struct hid_report *report; 537 char *raw_report; 538 }; 539 540 #define HID_CLAIMED_INPUT BIT(0) 541 #define HID_CLAIMED_HIDDEV BIT(1) 542 #define HID_CLAIMED_HIDRAW BIT(2) 543 #define HID_CLAIMED_DRIVER BIT(3) 544 545 #define HID_STAT_ADDED BIT(0) 546 #define HID_STAT_PARSED BIT(1) 547 #define HID_STAT_DUP_DETECTED BIT(2) 548 #define HID_STAT_REPROBED BIT(3) 549 550 struct hid_input { 551 struct list_head list; 552 struct hid_report *report; 553 struct input_dev *input; 554 const char *name; 555 bool registered; 556 struct list_head reports; /* the list of reports */ 557 unsigned int application; /* application usage for this input */ 558 }; 559 560 enum hid_type { 561 HID_TYPE_OTHER = 0, 562 HID_TYPE_USBMOUSE, 563 HID_TYPE_USBNONE 564 }; 565 566 enum hid_battery_status { 567 HID_BATTERY_UNKNOWN = 0, 568 HID_BATTERY_QUERIED, /* Kernel explicitly queried battery strength */ 569 HID_BATTERY_REPORTED, /* Device sent unsolicited battery strength report */ 570 }; 571 572 struct hid_driver; 573 struct hid_ll_driver; 574 575 struct hid_device { /* device report descriptor */ 576 __u8 *dev_rdesc; 577 unsigned dev_rsize; 578 __u8 *rdesc; 579 unsigned rsize; 580 struct hid_collection *collection; /* List of HID collections */ 581 unsigned collection_size; /* Number of allocated hid_collections */ 582 unsigned maxcollection; /* Number of parsed collections */ 583 unsigned maxapplication; /* Number of applications */ 584 __u16 bus; /* BUS ID */ 585 __u16 group; /* Report group */ 586 __u32 vendor; /* Vendor ID */ 587 __u32 product; /* Product ID */ 588 __u32 version; /* HID version */ 589 enum hid_type type; /* device type (mouse, kbd, ...) */ 590 unsigned country; /* HID country */ 591 struct hid_report_enum report_enum[HID_REPORT_TYPES]; 592 struct work_struct led_work; /* delayed LED worker */ 593 594 struct semaphore driver_input_lock; /* protects the current driver */ 595 struct device dev; /* device */ 596 struct hid_driver *driver; 597 598 struct hid_ll_driver *ll_driver; 599 struct mutex ll_open_lock; 600 unsigned int ll_open_count; 601 602 #ifdef CONFIG_HID_BATTERY_STRENGTH 603 /* 604 * Power supply information for HID devices which report 605 * battery strength. power_supply was successfully registered if 606 * battery is non-NULL. 607 */ 608 struct power_supply *battery; 609 __s32 battery_capacity; 610 __s32 battery_min; 611 __s32 battery_max; 612 __s32 battery_report_type; 613 __s32 battery_report_id; 614 enum hid_battery_status battery_status; 615 bool battery_avoid_query; 616 ktime_t battery_ratelimit_time; 617 #endif 618 619 unsigned long status; /* see STAT flags above */ 620 unsigned claimed; /* Claimed by hidinput, hiddev? */ 621 unsigned quirks; /* Various quirks the device can pull on us */ 622 bool io_started; /* If IO has started */ 623 624 struct list_head inputs; /* The list of inputs */ 625 void *hiddev; /* The hiddev structure */ 626 void *hidraw; 627 628 char name[128]; /* Device name */ 629 char phys[64]; /* Device physical location */ 630 char uniq[64]; /* Device unique identifier (serial #) */ 631 632 void *driver_data; 633 634 /* temporary hid_ff handling (until moved to the drivers) */ 635 int (*ff_init)(struct hid_device *); 636 637 /* hiddev event handler */ 638 int (*hiddev_connect)(struct hid_device *, unsigned int); 639 void (*hiddev_disconnect)(struct hid_device *); 640 void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field, 641 struct hid_usage *, __s32); 642 void (*hiddev_report_event) (struct hid_device *, struct hid_report *); 643 644 /* debugging support via debugfs */ 645 unsigned short debug; 646 struct dentry *debug_dir; 647 struct dentry *debug_rdesc; 648 struct dentry *debug_events; 649 struct list_head debug_list; 650 spinlock_t debug_list_lock; 651 wait_queue_head_t debug_wait; 652 653 unsigned int id; /* system unique id */ 654 }; 655 656 #define to_hid_device(pdev) \ 657 container_of(pdev, struct hid_device, dev) 658 659 static inline void *hid_get_drvdata(struct hid_device *hdev) 660 { 661 return dev_get_drvdata(&hdev->dev); 662 } 663 664 static inline void hid_set_drvdata(struct hid_device *hdev, void *data) 665 { 666 dev_set_drvdata(&hdev->dev, data); 667 } 668 669 #define HID_GLOBAL_STACK_SIZE 4 670 #define HID_COLLECTION_STACK_SIZE 4 671 672 #define HID_SCAN_FLAG_MT_WIN_8 BIT(0) 673 #define HID_SCAN_FLAG_VENDOR_SPECIFIC BIT(1) 674 #define HID_SCAN_FLAG_GD_POINTER BIT(2) 675 676 struct hid_parser { 677 struct hid_global global; 678 struct hid_global global_stack[HID_GLOBAL_STACK_SIZE]; 679 unsigned int global_stack_ptr; 680 struct hid_local local; 681 unsigned int *collection_stack; 682 unsigned int collection_stack_ptr; 683 unsigned int collection_stack_size; 684 struct hid_device *device; 685 unsigned int scan_flags; 686 }; 687 688 struct hid_class_descriptor { 689 __u8 bDescriptorType; 690 __le16 wDescriptorLength; 691 } __attribute__ ((packed)); 692 693 struct hid_descriptor { 694 __u8 bLength; 695 __u8 bDescriptorType; 696 __le16 bcdHID; 697 __u8 bCountryCode; 698 __u8 bNumDescriptors; 699 700 struct hid_class_descriptor desc[1]; 701 } __attribute__ ((packed)); 702 703 #define HID_DEVICE(b, g, ven, prod) \ 704 .bus = (b), .group = (g), .vendor = (ven), .product = (prod) 705 #define HID_USB_DEVICE(ven, prod) \ 706 .bus = BUS_USB, .vendor = (ven), .product = (prod) 707 #define HID_BLUETOOTH_DEVICE(ven, prod) \ 708 .bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod) 709 #define HID_I2C_DEVICE(ven, prod) \ 710 .bus = BUS_I2C, .vendor = (ven), .product = (prod) 711 712 #define HID_REPORT_ID(rep) \ 713 .report_type = (rep) 714 #define HID_USAGE_ID(uhid, utype, ucode) \ 715 .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode) 716 /* we don't want to catch types and codes equal to 0 */ 717 #define HID_TERMINATOR (HID_ANY_ID - 1) 718 719 struct hid_report_id { 720 __u32 report_type; 721 }; 722 struct hid_usage_id { 723 __u32 usage_hid; 724 __u32 usage_type; 725 __u32 usage_code; 726 }; 727 728 /** 729 * struct hid_driver 730 * @name: driver name (e.g. "Footech_bar-wheel") 731 * @id_table: which devices is this driver for (must be non-NULL for probe 732 * to be called) 733 * @dyn_list: list of dynamically added device ids 734 * @dyn_lock: lock protecting @dyn_list 735 * @match: check if the given device is handled by this driver 736 * @probe: new device inserted 737 * @remove: device removed (NULL if not a hot-plug capable driver) 738 * @report_table: on which reports to call raw_event (NULL means all) 739 * @raw_event: if report in report_table, this hook is called (NULL means nop) 740 * @usage_table: on which events to call event (NULL means all) 741 * @event: if usage in usage_table, this hook is called (NULL means nop) 742 * @report: this hook is called after parsing a report (NULL means nop) 743 * @report_fixup: called before report descriptor parsing (NULL means nop) 744 * @input_mapping: invoked on input registering before mapping an usage 745 * @input_mapped: invoked on input registering after mapping an usage 746 * @input_configured: invoked just before the device is registered 747 * @feature_mapping: invoked on feature registering 748 * @suspend: invoked on suspend (NULL means nop) 749 * @resume: invoked on resume if device was not reset (NULL means nop) 750 * @reset_resume: invoked on resume if device was reset (NULL means nop) 751 * 752 * probe should return -errno on error, or 0 on success. During probe, 753 * input will not be passed to raw_event unless hid_device_io_start is 754 * called. 755 * 756 * raw_event and event should return negative on error, any other value will 757 * pass the event on to .event() typically return 0 for success. 758 * 759 * input_mapping shall return a negative value to completely ignore this usage 760 * (e.g. doubled or invalid usage), zero to continue with parsing of this 761 * usage by generic code (no special handling needed) or positive to skip 762 * generic parsing (needed special handling which was done in the hook already) 763 * input_mapped shall return negative to inform the layer that this usage 764 * should not be considered for further processing or zero to notify that 765 * no processing was performed and should be done in a generic manner 766 * Both these functions may be NULL which means the same behavior as returning 767 * zero from them. 768 */ 769 struct hid_driver { 770 char *name; 771 const struct hid_device_id *id_table; 772 773 struct list_head dyn_list; 774 spinlock_t dyn_lock; 775 776 bool (*match)(struct hid_device *dev, bool ignore_special_driver); 777 int (*probe)(struct hid_device *dev, const struct hid_device_id *id); 778 void (*remove)(struct hid_device *dev); 779 780 const struct hid_report_id *report_table; 781 int (*raw_event)(struct hid_device *hdev, struct hid_report *report, 782 u8 *data, int size); 783 const struct hid_usage_id *usage_table; 784 int (*event)(struct hid_device *hdev, struct hid_field *field, 785 struct hid_usage *usage, __s32 value); 786 void (*report)(struct hid_device *hdev, struct hid_report *report); 787 788 __u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf, 789 unsigned int *size); 790 791 int (*input_mapping)(struct hid_device *hdev, 792 struct hid_input *hidinput, struct hid_field *field, 793 struct hid_usage *usage, unsigned long **bit, int *max); 794 int (*input_mapped)(struct hid_device *hdev, 795 struct hid_input *hidinput, struct hid_field *field, 796 struct hid_usage *usage, unsigned long **bit, int *max); 797 int (*input_configured)(struct hid_device *hdev, 798 struct hid_input *hidinput); 799 void (*feature_mapping)(struct hid_device *hdev, 800 struct hid_field *field, 801 struct hid_usage *usage); 802 #ifdef CONFIG_PM 803 int (*suspend)(struct hid_device *hdev, pm_message_t message); 804 int (*resume)(struct hid_device *hdev); 805 int (*reset_resume)(struct hid_device *hdev); 806 #endif 807 /* private: */ 808 struct device_driver driver; 809 }; 810 811 #define to_hid_driver(pdrv) \ 812 container_of(pdrv, struct hid_driver, driver) 813 814 /** 815 * struct hid_ll_driver - low level driver callbacks 816 * @start: called on probe to start the device 817 * @stop: called on remove 818 * @open: called by input layer on open 819 * @close: called by input layer on close 820 * @power: request underlying hardware to enter requested power mode 821 * @parse: this method is called only once to parse the device data, 822 * shouldn't allocate anything to not leak memory 823 * @request: send report request to device (e.g. feature report) 824 * @wait: wait for buffered io to complete (send/recv reports) 825 * @raw_request: send raw report request to device (e.g. feature report) 826 * @output_report: send output report to device 827 * @idle: send idle request to device 828 * @may_wakeup: return if device may act as a wakeup source during system-suspend 829 */ 830 struct hid_ll_driver { 831 int (*start)(struct hid_device *hdev); 832 void (*stop)(struct hid_device *hdev); 833 834 int (*open)(struct hid_device *hdev); 835 void (*close)(struct hid_device *hdev); 836 837 int (*power)(struct hid_device *hdev, int level); 838 839 int (*parse)(struct hid_device *hdev); 840 841 void (*request)(struct hid_device *hdev, 842 struct hid_report *report, int reqtype); 843 844 int (*wait)(struct hid_device *hdev); 845 846 int (*raw_request) (struct hid_device *hdev, unsigned char reportnum, 847 __u8 *buf, size_t len, unsigned char rtype, 848 int reqtype); 849 850 int (*output_report) (struct hid_device *hdev, __u8 *buf, size_t len); 851 852 int (*idle)(struct hid_device *hdev, int report, int idle, int reqtype); 853 bool (*may_wakeup)(struct hid_device *hdev); 854 }; 855 856 extern struct hid_ll_driver i2c_hid_ll_driver; 857 extern struct hid_ll_driver hidp_hid_driver; 858 extern struct hid_ll_driver uhid_hid_driver; 859 extern struct hid_ll_driver usb_hid_driver; 860 861 static inline bool hid_is_using_ll_driver(struct hid_device *hdev, 862 struct hid_ll_driver *driver) 863 { 864 return hdev->ll_driver == driver; 865 } 866 867 static inline bool hid_is_usb(struct hid_device *hdev) 868 { 869 return hid_is_using_ll_driver(hdev, &usb_hid_driver); 870 } 871 872 #define PM_HINT_FULLON 1<<5 873 #define PM_HINT_NORMAL 1<<1 874 875 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */ 876 /* We ignore a few input applications that are not widely used */ 877 #define IS_INPUT_APPLICATION(a) \ 878 (((a >= HID_UP_GENDESK) && (a <= HID_GD_MULTIAXIS)) \ 879 || ((a >= HID_DG_PEN) && (a <= HID_DG_WHITEBOARD)) \ 880 || (a == HID_GD_SYSTEM_CONTROL) || (a == HID_CP_CONSUMER_CONTROL) \ 881 || (a == HID_GD_WIRELESS_RADIO_CTLS)) 882 883 /* HID core API */ 884 885 extern int hid_debug; 886 887 extern bool hid_ignore(struct hid_device *); 888 extern int hid_add_device(struct hid_device *); 889 extern void hid_destroy_device(struct hid_device *); 890 891 extern struct bus_type hid_bus_type; 892 893 extern int __must_check __hid_register_driver(struct hid_driver *, 894 struct module *, const char *mod_name); 895 896 /* use a define to avoid include chaining to get THIS_MODULE & friends */ 897 #define hid_register_driver(driver) \ 898 __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) 899 900 extern void hid_unregister_driver(struct hid_driver *); 901 902 /** 903 * module_hid_driver() - Helper macro for registering a HID driver 904 * @__hid_driver: hid_driver struct 905 * 906 * Helper macro for HID drivers which do not do anything special in module 907 * init/exit. This eliminates a lot of boilerplate. Each module may only 908 * use this macro once, and calling it replaces module_init() and module_exit() 909 */ 910 #define module_hid_driver(__hid_driver) \ 911 module_driver(__hid_driver, hid_register_driver, \ 912 hid_unregister_driver) 913 914 extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32); 915 extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report); 916 extern int hidinput_connect(struct hid_device *hid, unsigned int force); 917 extern void hidinput_disconnect(struct hid_device *); 918 919 int hid_set_field(struct hid_field *, unsigned, __s32); 920 int hid_input_report(struct hid_device *hid, enum hid_report_type type, u8 *data, u32 size, 921 int interrupt); 922 struct hid_field *hidinput_get_led_field(struct hid_device *hid); 923 unsigned int hidinput_count_leds(struct hid_device *hid); 924 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code); 925 void hid_output_report(struct hid_report *report, __u8 *data); 926 int __hid_request(struct hid_device *hid, struct hid_report *rep, enum hid_class_request reqtype); 927 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags); 928 struct hid_device *hid_allocate_device(void); 929 struct hid_report *hid_register_report(struct hid_device *device, 930 enum hid_report_type type, unsigned int id, 931 unsigned int application); 932 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size); 933 struct hid_report *hid_validate_values(struct hid_device *hid, 934 enum hid_report_type type, unsigned int id, 935 unsigned int field_index, 936 unsigned int report_counts); 937 938 void hid_setup_resolution_multiplier(struct hid_device *hid); 939 int hid_open_report(struct hid_device *device); 940 int hid_check_keys_pressed(struct hid_device *hid); 941 int hid_connect(struct hid_device *hid, unsigned int connect_mask); 942 void hid_disconnect(struct hid_device *hid); 943 bool hid_match_one_id(const struct hid_device *hdev, 944 const struct hid_device_id *id); 945 const struct hid_device_id *hid_match_id(const struct hid_device *hdev, 946 const struct hid_device_id *id); 947 const struct hid_device_id *hid_match_device(struct hid_device *hdev, 948 struct hid_driver *hdrv); 949 bool hid_compare_device_paths(struct hid_device *hdev_a, 950 struct hid_device *hdev_b, char separator); 951 s32 hid_snto32(__u32 value, unsigned n); 952 __u32 hid_field_extract(const struct hid_device *hid, __u8 *report, 953 unsigned offset, unsigned n); 954 955 #ifdef CONFIG_PM 956 int hid_driver_suspend(struct hid_device *hdev, pm_message_t state); 957 int hid_driver_reset_resume(struct hid_device *hdev); 958 int hid_driver_resume(struct hid_device *hdev); 959 #else 960 static inline int hid_driver_suspend(struct hid_device *hdev, pm_message_t state) { return 0; } 961 static inline int hid_driver_reset_resume(struct hid_device *hdev) { return 0; } 962 static inline int hid_driver_resume(struct hid_device *hdev) { return 0; } 963 #endif 964 965 /** 966 * hid_device_io_start - enable HID input during probe, remove 967 * 968 * @hid: the device 969 * 970 * This should only be called during probe or remove and only be 971 * called by the thread calling probe or remove. It will allow 972 * incoming packets to be delivered to the driver. 973 */ 974 static inline void hid_device_io_start(struct hid_device *hid) { 975 if (hid->io_started) { 976 dev_warn(&hid->dev, "io already started\n"); 977 return; 978 } 979 hid->io_started = true; 980 up(&hid->driver_input_lock); 981 } 982 983 /** 984 * hid_device_io_stop - disable HID input during probe, remove 985 * 986 * @hid: the device 987 * 988 * Should only be called after hid_device_io_start. It will prevent 989 * incoming packets from going to the driver for the duration of 990 * probe, remove. If called during probe, packets will still go to the 991 * driver after probe is complete. This function should only be called 992 * by the thread calling probe or remove. 993 */ 994 static inline void hid_device_io_stop(struct hid_device *hid) { 995 if (!hid->io_started) { 996 dev_warn(&hid->dev, "io already stopped\n"); 997 return; 998 } 999 hid->io_started = false; 1000 down(&hid->driver_input_lock); 1001 } 1002 1003 /** 1004 * hid_map_usage - map usage input bits 1005 * 1006 * @hidinput: hidinput which we are interested in 1007 * @usage: usage to fill in 1008 * @bit: pointer to input->{}bit (out parameter) 1009 * @max: maximal valid usage->code to consider later (out parameter) 1010 * @type: input event type (EV_KEY, EV_REL, ...) 1011 * @c: code which corresponds to this usage and type 1012 * 1013 * The value pointed to by @bit will be set to NULL if either @type is 1014 * an unhandled event type, or if @c is out of range for @type. This 1015 * can be used as an error condition. 1016 */ 1017 static inline void hid_map_usage(struct hid_input *hidinput, 1018 struct hid_usage *usage, unsigned long **bit, int *max, 1019 __u8 type, unsigned int c) 1020 { 1021 struct input_dev *input = hidinput->input; 1022 unsigned long *bmap = NULL; 1023 unsigned int limit = 0; 1024 1025 switch (type) { 1026 case EV_ABS: 1027 bmap = input->absbit; 1028 limit = ABS_MAX; 1029 break; 1030 case EV_REL: 1031 bmap = input->relbit; 1032 limit = REL_MAX; 1033 break; 1034 case EV_KEY: 1035 bmap = input->keybit; 1036 limit = KEY_MAX; 1037 break; 1038 case EV_LED: 1039 bmap = input->ledbit; 1040 limit = LED_MAX; 1041 break; 1042 case EV_MSC: 1043 bmap = input->mscbit; 1044 limit = MSC_MAX; 1045 break; 1046 } 1047 1048 if (unlikely(c > limit || !bmap)) { 1049 pr_warn_ratelimited("%s: Invalid code %d type %d\n", 1050 input->name, c, type); 1051 *bit = NULL; 1052 return; 1053 } 1054 1055 usage->type = type; 1056 usage->code = c; 1057 *max = limit; 1058 *bit = bmap; 1059 } 1060 1061 /** 1062 * hid_map_usage_clear - map usage input bits and clear the input bit 1063 * 1064 * @hidinput: hidinput which we are interested in 1065 * @usage: usage to fill in 1066 * @bit: pointer to input->{}bit (out parameter) 1067 * @max: maximal valid usage->code to consider later (out parameter) 1068 * @type: input event type (EV_KEY, EV_REL, ...) 1069 * @c: code which corresponds to this usage and type 1070 * 1071 * The same as hid_map_usage, except the @c bit is also cleared in supported 1072 * bits (@bit). 1073 */ 1074 static inline void hid_map_usage_clear(struct hid_input *hidinput, 1075 struct hid_usage *usage, unsigned long **bit, int *max, 1076 __u8 type, __u16 c) 1077 { 1078 hid_map_usage(hidinput, usage, bit, max, type, c); 1079 if (*bit) 1080 clear_bit(usage->code, *bit); 1081 } 1082 1083 /** 1084 * hid_parse - parse HW reports 1085 * 1086 * @hdev: hid device 1087 * 1088 * Call this from probe after you set up the device (if needed). Your 1089 * report_fixup will be called (if non-NULL) after reading raw report from 1090 * device before passing it to hid layer for real parsing. 1091 */ 1092 static inline int __must_check hid_parse(struct hid_device *hdev) 1093 { 1094 return hid_open_report(hdev); 1095 } 1096 1097 int __must_check hid_hw_start(struct hid_device *hdev, 1098 unsigned int connect_mask); 1099 void hid_hw_stop(struct hid_device *hdev); 1100 int __must_check hid_hw_open(struct hid_device *hdev); 1101 void hid_hw_close(struct hid_device *hdev); 1102 void hid_hw_request(struct hid_device *hdev, 1103 struct hid_report *report, enum hid_class_request reqtype); 1104 int hid_hw_raw_request(struct hid_device *hdev, 1105 unsigned char reportnum, __u8 *buf, 1106 size_t len, enum hid_report_type rtype, 1107 enum hid_class_request reqtype); 1108 int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, size_t len); 1109 1110 /** 1111 * hid_hw_power - requests underlying HW to go into given power mode 1112 * 1113 * @hdev: hid device 1114 * @level: requested power level (one of %PM_HINT_* defines) 1115 * 1116 * This function requests underlying hardware to enter requested power 1117 * mode. 1118 */ 1119 1120 static inline int hid_hw_power(struct hid_device *hdev, int level) 1121 { 1122 return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0; 1123 } 1124 1125 1126 /** 1127 * hid_hw_idle - send idle request to device 1128 * 1129 * @hdev: hid device 1130 * @report: report to control 1131 * @idle: idle state 1132 * @reqtype: hid request type 1133 */ 1134 static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle, 1135 enum hid_class_request reqtype) 1136 { 1137 if (hdev->ll_driver->idle) 1138 return hdev->ll_driver->idle(hdev, report, idle, reqtype); 1139 1140 return 0; 1141 } 1142 1143 /** 1144 * hid_hw_may_wakeup - return if the hid device may act as a wakeup source during system-suspend 1145 * 1146 * @hdev: hid device 1147 */ 1148 static inline bool hid_hw_may_wakeup(struct hid_device *hdev) 1149 { 1150 if (hdev->ll_driver->may_wakeup) 1151 return hdev->ll_driver->may_wakeup(hdev); 1152 1153 if (hdev->dev.parent) 1154 return device_may_wakeup(hdev->dev.parent); 1155 1156 return false; 1157 } 1158 1159 /** 1160 * hid_hw_wait - wait for buffered io to complete 1161 * 1162 * @hdev: hid device 1163 */ 1164 static inline void hid_hw_wait(struct hid_device *hdev) 1165 { 1166 if (hdev->ll_driver->wait) 1167 hdev->ll_driver->wait(hdev); 1168 } 1169 1170 /** 1171 * hid_report_len - calculate the report length 1172 * 1173 * @report: the report we want to know the length 1174 */ 1175 static inline u32 hid_report_len(struct hid_report *report) 1176 { 1177 return DIV_ROUND_UP(report->size, 8) + (report->id > 0); 1178 } 1179 1180 int hid_report_raw_event(struct hid_device *hid, enum hid_report_type type, u8 *data, u32 size, 1181 int interrupt); 1182 1183 /* HID quirks API */ 1184 unsigned long hid_lookup_quirk(const struct hid_device *hdev); 1185 int hid_quirks_init(char **quirks_param, __u16 bus, int count); 1186 void hid_quirks_exit(__u16 bus); 1187 1188 #ifdef CONFIG_HID_PID 1189 int hid_pidff_init(struct hid_device *hid); 1190 #else 1191 #define hid_pidff_init NULL 1192 #endif 1193 1194 #define dbg_hid(fmt, ...) \ 1195 do { \ 1196 if (hid_debug) \ 1197 printk(KERN_DEBUG "%s: " fmt, __FILE__, ##__VA_ARGS__); \ 1198 } while (0) 1199 1200 #define hid_err(hid, fmt, ...) \ 1201 dev_err(&(hid)->dev, fmt, ##__VA_ARGS__) 1202 #define hid_notice(hid, fmt, ...) \ 1203 dev_notice(&(hid)->dev, fmt, ##__VA_ARGS__) 1204 #define hid_warn(hid, fmt, ...) \ 1205 dev_warn(&(hid)->dev, fmt, ##__VA_ARGS__) 1206 #define hid_info(hid, fmt, ...) \ 1207 dev_info(&(hid)->dev, fmt, ##__VA_ARGS__) 1208 #define hid_dbg(hid, fmt, ...) \ 1209 dev_dbg(&(hid)->dev, fmt, ##__VA_ARGS__) 1210 1211 #define hid_err_once(hid, fmt, ...) \ 1212 dev_err_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1213 #define hid_notice_once(hid, fmt, ...) \ 1214 dev_notice_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1215 #define hid_warn_once(hid, fmt, ...) \ 1216 dev_warn_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1217 #define hid_info_once(hid, fmt, ...) \ 1218 dev_info_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1219 #define hid_dbg_once(hid, fmt, ...) \ 1220 dev_dbg_once(&(hid)->dev, fmt, ##__VA_ARGS__) 1221 1222 #endif 1223