1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 2000-2001 Vojtech Pavlik 4 * Copyright (c) 2006-2010 Jiri Kosina 5 * 6 * HID to Linux Input mapping 7 */ 8 9 /* 10 * 11 * Should you need to contact me, the author, you can do so either by 12 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 13 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 14 */ 15 16 #include <linux/module.h> 17 #include <linux/slab.h> 18 #include <linux/kernel.h> 19 20 #include <linux/hid.h> 21 #include <linux/hid-debug.h> 22 23 #include "hid-ids.h" 24 25 #define unk KEY_UNKNOWN 26 27 static const unsigned char hid_keyboard[256] = { 28 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, 29 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, 30 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, 31 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, 32 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, 33 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, 34 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, 35 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, 36 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk, 37 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk, 38 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 39 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk, 40 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 41 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk, 42 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, 43 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk 44 }; 45 46 static const struct { 47 __s32 x; 48 __s32 y; 49 } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; 50 51 struct usage_priority { 52 __u32 usage; /* the HID usage associated */ 53 bool global; /* we assume all usages to be slotted, 54 * unless global 55 */ 56 unsigned int slot_overwrite; /* for globals: allows to set the usage 57 * before or after the slots 58 */ 59 }; 60 61 /* 62 * hid-input will convert this list into priorities: 63 * the first element will have the highest priority 64 * (the length of the following array) and the last 65 * element the lowest (1). 66 * 67 * hid-input will then shift the priority by 8 bits to leave some space 68 * in case drivers want to interleave other fields. 69 * 70 * To accommodate slotted devices, the slot priority is 71 * defined in the next 8 bits (defined by 0xff - slot). 72 * 73 * If drivers want to add fields before those, hid-input will 74 * leave out the first 8 bits of the priority value. 75 * 76 * This still leaves us 65535 individual priority values. 77 */ 78 static const struct usage_priority hidinput_usages_priorities[] = { 79 { /* Eraser (eraser touching) must always come before tipswitch */ 80 .usage = HID_DG_ERASER, 81 }, 82 { /* Invert must always come before In Range */ 83 .usage = HID_DG_INVERT, 84 }, 85 { /* Is the tip of the tool touching? */ 86 .usage = HID_DG_TIPSWITCH, 87 }, 88 { /* Tip Pressure might emulate tip switch */ 89 .usage = HID_DG_TIPPRESSURE, 90 }, 91 { /* In Range needs to come after the other tool states */ 92 .usage = HID_DG_INRANGE, 93 }, 94 }; 95 96 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c)) 97 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c)) 98 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c)) 99 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c)) 100 #define map_msc(c) hid_map_usage(hidinput, usage, &bit, &max, EV_MSC, (c)) 101 102 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 103 &max, EV_ABS, (c)) 104 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 105 &max, EV_KEY, (c)) 106 107 static bool match_scancode(struct hid_usage *usage, 108 unsigned int cur_idx, unsigned int scancode) 109 { 110 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode; 111 } 112 113 static bool match_keycode(struct hid_usage *usage, 114 unsigned int cur_idx, unsigned int keycode) 115 { 116 /* 117 * We should exclude unmapped usages when doing lookup by keycode. 118 */ 119 return (usage->type == EV_KEY && usage->code == keycode); 120 } 121 122 static bool match_index(struct hid_usage *usage, 123 unsigned int cur_idx, unsigned int idx) 124 { 125 return cur_idx == idx; 126 } 127 128 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage, 129 unsigned int cur_idx, unsigned int val); 130 131 static struct hid_usage *hidinput_find_key(struct hid_device *hid, 132 hid_usage_cmp_t match, 133 unsigned int value, 134 unsigned int *usage_idx) 135 { 136 unsigned int i, j, k, cur_idx = 0; 137 struct hid_report *report; 138 struct hid_usage *usage; 139 140 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 141 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 142 for (i = 0; i < report->maxfield; i++) { 143 for (j = 0; j < report->field[i]->maxusage; j++) { 144 usage = report->field[i]->usage + j; 145 if (usage->type == EV_KEY || usage->type == 0) { 146 if (match(usage, cur_idx, value)) { 147 if (usage_idx) 148 *usage_idx = cur_idx; 149 return usage; 150 } 151 cur_idx++; 152 } 153 } 154 } 155 } 156 } 157 return NULL; 158 } 159 160 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid, 161 const struct input_keymap_entry *ke, 162 unsigned int *index) 163 { 164 struct hid_usage *usage; 165 unsigned int scancode; 166 167 if (ke->flags & INPUT_KEYMAP_BY_INDEX) 168 usage = hidinput_find_key(hid, match_index, ke->index, index); 169 else if (input_scancode_to_scalar(ke, &scancode) == 0) 170 usage = hidinput_find_key(hid, match_scancode, scancode, index); 171 else 172 usage = NULL; 173 174 return usage; 175 } 176 177 static int hidinput_getkeycode(struct input_dev *dev, 178 struct input_keymap_entry *ke) 179 { 180 struct hid_device *hid = input_get_drvdata(dev); 181 struct hid_usage *usage; 182 unsigned int scancode, index; 183 184 usage = hidinput_locate_usage(hid, ke, &index); 185 if (usage) { 186 ke->keycode = usage->type == EV_KEY ? 187 usage->code : KEY_RESERVED; 188 ke->index = index; 189 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE); 190 ke->len = sizeof(scancode); 191 memcpy(ke->scancode, &scancode, sizeof(scancode)); 192 return 0; 193 } 194 195 return -EINVAL; 196 } 197 198 static int hidinput_setkeycode(struct input_dev *dev, 199 const struct input_keymap_entry *ke, 200 unsigned int *old_keycode) 201 { 202 struct hid_device *hid = input_get_drvdata(dev); 203 struct hid_usage *usage; 204 205 usage = hidinput_locate_usage(hid, ke, NULL); 206 if (usage) { 207 *old_keycode = usage->type == EV_KEY ? 208 usage->code : KEY_RESERVED; 209 usage->type = EV_KEY; 210 usage->code = ke->keycode; 211 212 clear_bit(*old_keycode, dev->keybit); 213 set_bit(usage->code, dev->keybit); 214 dbg_hid("Assigned keycode %d to HID usage code %x\n", 215 usage->code, usage->hid); 216 217 /* 218 * Set the keybit for the old keycode if the old keycode is used 219 * by another key 220 */ 221 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL)) 222 set_bit(*old_keycode, dev->keybit); 223 224 return 0; 225 } 226 227 return -EINVAL; 228 } 229 230 231 /** 232 * hidinput_calc_abs_res - calculate an absolute axis resolution 233 * @field: the HID report field to calculate resolution for 234 * @code: axis code 235 * 236 * The formula is: 237 * (logical_maximum - logical_minimum) 238 * resolution = ---------------------------------------------------------- 239 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent 240 * 241 * as seen in the HID specification v1.11 6.2.2.7 Global Items. 242 * 243 * Only exponent 1 length units are processed. Centimeters and inches are 244 * converted to millimeters. Degrees are converted to radians. 245 */ 246 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) 247 { 248 __s32 unit_exponent = field->unit_exponent; 249 __s32 logical_extents = field->logical_maximum - 250 field->logical_minimum; 251 __s32 physical_extents = field->physical_maximum - 252 field->physical_minimum; 253 __s32 prev; 254 255 /* Check if the extents are sane */ 256 if (logical_extents <= 0 || physical_extents <= 0) 257 return 0; 258 259 /* 260 * Verify and convert units. 261 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding 262 */ 263 switch (code) { 264 case ABS_X: 265 case ABS_Y: 266 case ABS_Z: 267 case ABS_MT_POSITION_X: 268 case ABS_MT_POSITION_Y: 269 case ABS_MT_TOOL_X: 270 case ABS_MT_TOOL_Y: 271 case ABS_MT_TOUCH_MAJOR: 272 case ABS_MT_TOUCH_MINOR: 273 if (field->unit == 0x11) { /* If centimeters */ 274 /* Convert to millimeters */ 275 unit_exponent += 1; 276 } else if (field->unit == 0x13) { /* If inches */ 277 /* Convert to millimeters */ 278 prev = physical_extents; 279 physical_extents *= 254; 280 if (physical_extents < prev) 281 return 0; 282 unit_exponent -= 1; 283 } else { 284 return 0; 285 } 286 break; 287 288 case ABS_RX: 289 case ABS_RY: 290 case ABS_RZ: 291 case ABS_WHEEL: 292 case ABS_TILT_X: 293 case ABS_TILT_Y: 294 if (field->unit == 0x14) { /* If degrees */ 295 /* Convert to radians */ 296 prev = logical_extents; 297 logical_extents *= 573; 298 if (logical_extents < prev) 299 return 0; 300 unit_exponent += 1; 301 } else if (field->unit != 0x12) { /* If not radians */ 302 return 0; 303 } 304 break; 305 306 default: 307 return 0; 308 } 309 310 /* Apply negative unit exponent */ 311 for (; unit_exponent < 0; unit_exponent++) { 312 prev = logical_extents; 313 logical_extents *= 10; 314 if (logical_extents < prev) 315 return 0; 316 } 317 /* Apply positive unit exponent */ 318 for (; unit_exponent > 0; unit_exponent--) { 319 prev = physical_extents; 320 physical_extents *= 10; 321 if (physical_extents < prev) 322 return 0; 323 } 324 325 /* Calculate resolution */ 326 return DIV_ROUND_CLOSEST(logical_extents, physical_extents); 327 } 328 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res); 329 330 #ifdef CONFIG_HID_BATTERY_STRENGTH 331 static enum power_supply_property hidinput_battery_props[] = { 332 POWER_SUPPLY_PROP_PRESENT, 333 POWER_SUPPLY_PROP_ONLINE, 334 POWER_SUPPLY_PROP_CAPACITY, 335 POWER_SUPPLY_PROP_MODEL_NAME, 336 POWER_SUPPLY_PROP_STATUS, 337 POWER_SUPPLY_PROP_SCOPE, 338 }; 339 340 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */ 341 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */ 342 #define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */ 343 #define HID_BATTERY_QUIRK_AVOID_QUERY (1 << 3) /* do not query the battery */ 344 345 static const struct hid_device_id hid_battery_quirks[] = { 346 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 347 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO), 348 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 349 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 350 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI), 351 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 352 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 353 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI), 354 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 355 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 356 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO), 357 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 358 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 359 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI), 360 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 361 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 362 USB_DEVICE_ID_APPLE_MAGICTRACKPAD), 363 HID_BATTERY_QUIRK_IGNORE }, 364 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, 365 USB_DEVICE_ID_ELECOM_BM084), 366 HID_BATTERY_QUIRK_IGNORE }, 367 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL, 368 USB_DEVICE_ID_SYMBOL_SCANNER_3), 369 HID_BATTERY_QUIRK_IGNORE }, 370 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK, 371 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), 372 HID_BATTERY_QUIRK_IGNORE }, 373 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 374 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD), 375 HID_BATTERY_QUIRK_IGNORE }, 376 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_TP420IA_TOUCHSCREEN), 377 HID_BATTERY_QUIRK_IGNORE }, 378 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_GV301RA_TOUCHSCREEN), 379 HID_BATTERY_QUIRK_IGNORE }, 380 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_UX3402_TOUCHSCREEN), 381 HID_BATTERY_QUIRK_IGNORE }, 382 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_UX6404_TOUCHSCREEN), 383 HID_BATTERY_QUIRK_IGNORE }, 384 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN), 385 HID_BATTERY_QUIRK_IGNORE }, 386 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN), 387 HID_BATTERY_QUIRK_IGNORE }, 388 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L), 389 HID_BATTERY_QUIRK_AVOID_QUERY }, 390 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_MW), 391 HID_BATTERY_QUIRK_AVOID_QUERY }, 392 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_SW), 393 HID_BATTERY_QUIRK_AVOID_QUERY }, 394 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15), 395 HID_BATTERY_QUIRK_IGNORE }, 396 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100), 397 HID_BATTERY_QUIRK_IGNORE }, 398 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_EU0009NV), 399 HID_BATTERY_QUIRK_IGNORE }, 400 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15), 401 HID_BATTERY_QUIRK_IGNORE }, 402 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_13_AW0020NG), 403 HID_BATTERY_QUIRK_IGNORE }, 404 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN), 405 HID_BATTERY_QUIRK_IGNORE }, 406 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO2_TOUCHSCREEN), 407 HID_BATTERY_QUIRK_IGNORE }, 408 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_LENOVO_YOGA_C630_TOUCHSCREEN), 409 HID_BATTERY_QUIRK_IGNORE }, 410 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_13T_AW100), 411 HID_BATTERY_QUIRK_IGNORE }, 412 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_14T_EA100_V1), 413 HID_BATTERY_QUIRK_IGNORE }, 414 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_14T_EA100_V2), 415 HID_BATTERY_QUIRK_IGNORE }, 416 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15_EU0556NG), 417 HID_BATTERY_QUIRK_IGNORE }, 418 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_CHROMEBOOK_TROGDOR_POMPOM), 419 HID_BATTERY_QUIRK_AVOID_QUERY }, 420 {} 421 }; 422 423 static unsigned find_battery_quirk(struct hid_device *hdev) 424 { 425 unsigned quirks = 0; 426 const struct hid_device_id *match; 427 428 match = hid_match_id(hdev, hid_battery_quirks); 429 if (match != NULL) 430 quirks = match->driver_data; 431 432 return quirks; 433 } 434 435 static int hidinput_scale_battery_capacity(struct hid_device *dev, 436 int value) 437 { 438 if (dev->battery_min < dev->battery_max && 439 value >= dev->battery_min && value <= dev->battery_max) 440 value = ((value - dev->battery_min) * 100) / 441 (dev->battery_max - dev->battery_min); 442 443 return value; 444 } 445 446 static int hidinput_query_battery_capacity(struct hid_device *dev) 447 { 448 u8 *buf; 449 int ret; 450 451 buf = kmalloc(4, GFP_KERNEL); 452 if (!buf) 453 return -ENOMEM; 454 455 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4, 456 dev->battery_report_type, HID_REQ_GET_REPORT); 457 if (ret < 2) { 458 kfree(buf); 459 return -ENODATA; 460 } 461 462 ret = hidinput_scale_battery_capacity(dev, buf[1]); 463 kfree(buf); 464 return ret; 465 } 466 467 static int hidinput_get_battery_property(struct power_supply *psy, 468 enum power_supply_property prop, 469 union power_supply_propval *val) 470 { 471 struct hid_device *dev = power_supply_get_drvdata(psy); 472 int value; 473 int ret = 0; 474 475 switch (prop) { 476 case POWER_SUPPLY_PROP_PRESENT: 477 case POWER_SUPPLY_PROP_ONLINE: 478 val->intval = 1; 479 break; 480 481 case POWER_SUPPLY_PROP_CAPACITY: 482 if (dev->battery_status != HID_BATTERY_REPORTED && 483 !dev->battery_avoid_query) { 484 value = hidinput_query_battery_capacity(dev); 485 if (value < 0) 486 return value; 487 } else { 488 value = dev->battery_capacity; 489 } 490 491 val->intval = value; 492 break; 493 494 case POWER_SUPPLY_PROP_MODEL_NAME: 495 val->strval = dev->name; 496 break; 497 498 case POWER_SUPPLY_PROP_STATUS: 499 if (dev->battery_status != HID_BATTERY_REPORTED && 500 !dev->battery_avoid_query) { 501 value = hidinput_query_battery_capacity(dev); 502 if (value < 0) 503 return value; 504 505 dev->battery_capacity = value; 506 dev->battery_status = HID_BATTERY_QUERIED; 507 } 508 509 if (dev->battery_status == HID_BATTERY_UNKNOWN) 510 val->intval = POWER_SUPPLY_STATUS_UNKNOWN; 511 else 512 val->intval = dev->battery_charge_status; 513 break; 514 515 case POWER_SUPPLY_PROP_SCOPE: 516 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 517 break; 518 519 default: 520 ret = -EINVAL; 521 break; 522 } 523 524 return ret; 525 } 526 527 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 528 struct hid_field *field, bool is_percentage) 529 { 530 struct power_supply_desc *psy_desc; 531 struct power_supply_config psy_cfg = { .drv_data = dev, }; 532 unsigned quirks; 533 s32 min, max; 534 int error; 535 536 if (dev->battery) 537 return 0; /* already initialized? */ 538 539 quirks = find_battery_quirk(dev); 540 541 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 542 dev->bus, dev->vendor, dev->product, dev->version, quirks); 543 544 if (quirks & HID_BATTERY_QUIRK_IGNORE) 545 return 0; 546 547 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); 548 if (!psy_desc) 549 return -ENOMEM; 550 551 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", 552 strlen(dev->uniq) ? 553 dev->uniq : dev_name(&dev->dev)); 554 if (!psy_desc->name) { 555 error = -ENOMEM; 556 goto err_free_mem; 557 } 558 559 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 560 psy_desc->properties = hidinput_battery_props; 561 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); 562 psy_desc->use_for_apm = 0; 563 psy_desc->get_property = hidinput_get_battery_property; 564 565 min = field->logical_minimum; 566 max = field->logical_maximum; 567 568 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) { 569 min = 0; 570 max = 100; 571 } 572 573 if (quirks & HID_BATTERY_QUIRK_FEATURE) 574 report_type = HID_FEATURE_REPORT; 575 576 dev->battery_min = min; 577 dev->battery_max = max; 578 dev->battery_report_type = report_type; 579 dev->battery_report_id = field->report->id; 580 dev->battery_charge_status = POWER_SUPPLY_STATUS_DISCHARGING; 581 582 /* 583 * Stylus is normally not connected to the device and thus we 584 * can't query the device and get meaningful battery strength. 585 * We have to wait for the device to report it on its own. 586 */ 587 dev->battery_avoid_query = report_type == HID_INPUT_REPORT && 588 field->physical == HID_DG_STYLUS; 589 590 if (quirks & HID_BATTERY_QUIRK_AVOID_QUERY) 591 dev->battery_avoid_query = true; 592 593 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); 594 if (IS_ERR(dev->battery)) { 595 error = PTR_ERR(dev->battery); 596 hid_warn(dev, "can't register power supply: %d\n", error); 597 goto err_free_name; 598 } 599 600 power_supply_powers(dev->battery, &dev->dev); 601 return 0; 602 603 err_free_name: 604 kfree(psy_desc->name); 605 err_free_mem: 606 kfree(psy_desc); 607 dev->battery = NULL; 608 return error; 609 } 610 611 static void hidinput_cleanup_battery(struct hid_device *dev) 612 { 613 const struct power_supply_desc *psy_desc; 614 615 if (!dev->battery) 616 return; 617 618 psy_desc = dev->battery->desc; 619 power_supply_unregister(dev->battery); 620 kfree(psy_desc->name); 621 kfree(psy_desc); 622 dev->battery = NULL; 623 } 624 625 static void hidinput_update_battery(struct hid_device *dev, int value) 626 { 627 int capacity; 628 629 if (!dev->battery) 630 return; 631 632 if (value == 0 || value < dev->battery_min || value > dev->battery_max) 633 return; 634 635 capacity = hidinput_scale_battery_capacity(dev, value); 636 637 if (dev->battery_status != HID_BATTERY_REPORTED || 638 capacity != dev->battery_capacity || 639 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) { 640 dev->battery_capacity = capacity; 641 dev->battery_status = HID_BATTERY_REPORTED; 642 dev->battery_ratelimit_time = 643 ktime_add_ms(ktime_get_coarse(), 30 * 1000); 644 power_supply_changed(dev->battery); 645 } 646 } 647 648 static bool hidinput_set_battery_charge_status(struct hid_device *dev, 649 unsigned int usage, int value) 650 { 651 switch (usage) { 652 case HID_BAT_CHARGING: 653 dev->battery_charge_status = value ? 654 POWER_SUPPLY_STATUS_CHARGING : 655 POWER_SUPPLY_STATUS_DISCHARGING; 656 return true; 657 } 658 659 return false; 660 } 661 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 662 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 663 struct hid_field *field, bool is_percentage) 664 { 665 return 0; 666 } 667 668 static void hidinput_cleanup_battery(struct hid_device *dev) 669 { 670 } 671 672 static void hidinput_update_battery(struct hid_device *dev, int value) 673 { 674 } 675 676 static bool hidinput_set_battery_charge_status(struct hid_device *dev, 677 unsigned int usage, int value) 678 { 679 return false; 680 } 681 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 682 683 static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field, 684 unsigned int type, unsigned int usage) 685 { 686 struct hid_collection *collection; 687 688 collection = &device->collection[field->usage->collection_index]; 689 690 return collection->type == type && collection->usage == usage; 691 } 692 693 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 694 struct hid_usage *usage, unsigned int usage_index) 695 { 696 struct input_dev *input = hidinput->input; 697 struct hid_device *device = input_get_drvdata(input); 698 const struct usage_priority *usage_priority = NULL; 699 int max = 0, code; 700 unsigned int i = 0; 701 unsigned long *bit = NULL; 702 703 field->hidinput = hidinput; 704 705 if (field->flags & HID_MAIN_ITEM_CONSTANT) 706 goto ignore; 707 708 /* Ignore if report count is out of bounds. */ 709 if (field->report_count < 1) 710 goto ignore; 711 712 /* only LED usages are supported in output fields */ 713 if (field->report_type == HID_OUTPUT_REPORT && 714 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 715 goto ignore; 716 } 717 718 /* assign a priority based on the static list declared here */ 719 for (i = 0; i < ARRAY_SIZE(hidinput_usages_priorities); i++) { 720 if (usage->hid == hidinput_usages_priorities[i].usage) { 721 usage_priority = &hidinput_usages_priorities[i]; 722 723 field->usages_priorities[usage_index] = 724 (ARRAY_SIZE(hidinput_usages_priorities) - i) << 8; 725 break; 726 } 727 } 728 729 /* 730 * For slotted devices, we need to also add the slot index 731 * in the priority. 732 */ 733 if (usage_priority && usage_priority->global) 734 field->usages_priorities[usage_index] |= 735 usage_priority->slot_overwrite; 736 else 737 field->usages_priorities[usage_index] |= 738 (0xff - field->slot_idx) << 16; 739 740 if (device->driver->input_mapping) { 741 int ret = device->driver->input_mapping(device, hidinput, field, 742 usage, &bit, &max); 743 if (ret > 0) 744 goto mapped; 745 if (ret < 0) 746 goto ignore; 747 } 748 749 switch (usage->hid & HID_USAGE_PAGE) { 750 case HID_UP_UNDEFINED: 751 goto ignore; 752 753 case HID_UP_KEYBOARD: 754 set_bit(EV_REP, input->evbit); 755 756 if ((usage->hid & HID_USAGE) < 256) { 757 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 758 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 759 } else 760 map_key(KEY_UNKNOWN); 761 762 break; 763 764 case HID_UP_BUTTON: 765 code = ((usage->hid - 1) & HID_USAGE); 766 767 switch (field->application) { 768 case HID_GD_MOUSE: 769 case HID_GD_POINTER: code += BTN_MOUSE; break; 770 case HID_GD_JOYSTICK: 771 if (code <= 0xf) 772 code += BTN_JOYSTICK; 773 else 774 code += BTN_TRIGGER_HAPPY - 0x10; 775 break; 776 case HID_GD_GAMEPAD: 777 if (code <= 0xf) 778 code += BTN_GAMEPAD; 779 else 780 code += BTN_TRIGGER_HAPPY - 0x10; 781 break; 782 case HID_CP_CONSUMER_CONTROL: 783 if (hidinput_field_in_collection(device, field, 784 HID_COLLECTION_NAMED_ARRAY, 785 HID_CP_PROGRAMMABLEBUTTONS)) { 786 if (code <= 0x1d) 787 code += KEY_MACRO1; 788 else 789 code += BTN_TRIGGER_HAPPY - 0x1e; 790 break; 791 } 792 fallthrough; 793 default: 794 switch (field->physical) { 795 case HID_GD_MOUSE: 796 case HID_GD_POINTER: code += BTN_MOUSE; break; 797 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 798 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 799 default: code += BTN_MISC; 800 } 801 } 802 803 map_key(code); 804 break; 805 806 case HID_UP_SIMULATION: 807 switch (usage->hid & 0xffff) { 808 case 0xba: map_abs(ABS_RUDDER); break; 809 case 0xbb: map_abs(ABS_THROTTLE); break; 810 case 0xc4: map_abs(ABS_GAS); break; 811 case 0xc5: map_abs(ABS_BRAKE); break; 812 case 0xc8: map_abs(ABS_WHEEL); break; 813 default: goto ignore; 814 } 815 break; 816 817 case HID_UP_GENDESK: 818 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 819 switch (usage->hid & 0xf) { 820 case 0x1: map_key_clear(KEY_POWER); break; 821 case 0x2: map_key_clear(KEY_SLEEP); break; 822 case 0x3: map_key_clear(KEY_WAKEUP); break; 823 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 824 case 0x5: map_key_clear(KEY_MENU); break; 825 case 0x6: map_key_clear(KEY_PROG1); break; 826 case 0x7: map_key_clear(KEY_HELP); break; 827 case 0x8: map_key_clear(KEY_EXIT); break; 828 case 0x9: map_key_clear(KEY_SELECT); break; 829 case 0xa: map_key_clear(KEY_RIGHT); break; 830 case 0xb: map_key_clear(KEY_LEFT); break; 831 case 0xc: map_key_clear(KEY_UP); break; 832 case 0xd: map_key_clear(KEY_DOWN); break; 833 case 0xe: map_key_clear(KEY_POWER2); break; 834 case 0xf: map_key_clear(KEY_RESTART); break; 835 default: goto unknown; 836 } 837 break; 838 } 839 840 if ((usage->hid & 0xf0) == 0x90) { /* SystemControl*/ 841 switch (usage->hid & 0xf) { 842 case 0xb: map_key_clear(KEY_DO_NOT_DISTURB); break; 843 default: goto ignore; 844 } 845 break; 846 } 847 848 if ((usage->hid & 0xf0) == 0xa0) { /* SystemControl */ 849 switch (usage->hid & 0xf) { 850 case 0x9: map_key_clear(KEY_MICMUTE); break; 851 case 0xa: map_key_clear(KEY_ACCESSIBILITY); break; 852 default: goto ignore; 853 } 854 break; 855 } 856 857 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */ 858 switch (usage->hid & 0xf) { 859 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break; 860 default: goto ignore; 861 } 862 break; 863 } 864 865 /* 866 * Some lazy vendors declare 255 usages for System Control, 867 * leading to the creation of ABS_X|Y axis and too many others. 868 * It wouldn't be a problem if joydev doesn't consider the 869 * device as a joystick then. 870 */ 871 if (field->application == HID_GD_SYSTEM_CONTROL) 872 goto ignore; 873 874 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 875 switch (usage->hid) { 876 case HID_GD_UP: usage->hat_dir = 1; break; 877 case HID_GD_DOWN: usage->hat_dir = 5; break; 878 case HID_GD_RIGHT: usage->hat_dir = 3; break; 879 case HID_GD_LEFT: usage->hat_dir = 7; break; 880 default: goto unknown; 881 } 882 if (field->dpad) { 883 map_abs(field->dpad); 884 goto ignore; 885 } 886 map_abs(ABS_HAT0X); 887 break; 888 } 889 890 switch (usage->hid) { 891 /* These usage IDs map directly to the usage codes. */ 892 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 893 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 894 if (field->flags & HID_MAIN_ITEM_RELATIVE) 895 map_rel(usage->hid & 0xf); 896 else 897 map_abs_clear(usage->hid & 0xf); 898 break; 899 900 case HID_GD_WHEEL: 901 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 902 set_bit(REL_WHEEL, input->relbit); 903 map_rel(REL_WHEEL_HI_RES); 904 } else { 905 map_abs(usage->hid & 0xf); 906 } 907 break; 908 case HID_GD_SLIDER: case HID_GD_DIAL: 909 if (field->flags & HID_MAIN_ITEM_RELATIVE) 910 map_rel(usage->hid & 0xf); 911 else 912 map_abs(usage->hid & 0xf); 913 break; 914 915 case HID_GD_HATSWITCH: 916 usage->hat_min = field->logical_minimum; 917 usage->hat_max = field->logical_maximum; 918 map_abs(ABS_HAT0X); 919 break; 920 921 case HID_GD_START: map_key_clear(BTN_START); break; 922 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 923 924 case HID_GD_RFKILL_BTN: 925 /* MS wireless radio ctl extension, also check CA */ 926 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 927 map_key_clear(KEY_RFKILL); 928 /* We need to simulate the btn release */ 929 field->flags |= HID_MAIN_ITEM_RELATIVE; 930 break; 931 } 932 goto unknown; 933 934 default: goto unknown; 935 } 936 937 break; 938 939 case HID_UP_LED: 940 switch (usage->hid & 0xffff) { /* HID-Value: */ 941 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 942 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 943 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 944 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 945 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 946 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 947 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 948 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 949 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 950 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 951 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 952 953 default: goto ignore; 954 } 955 break; 956 957 case HID_UP_DIGITIZER: 958 if ((field->application & 0xff) == 0x01) /* Digitizer */ 959 __set_bit(INPUT_PROP_POINTER, input->propbit); 960 else if ((field->application & 0xff) == 0x02) /* Pen */ 961 __set_bit(INPUT_PROP_DIRECT, input->propbit); 962 963 switch (usage->hid & 0xff) { 964 case 0x00: /* Undefined */ 965 goto ignore; 966 967 case 0x30: /* TipPressure */ 968 if (!test_bit(BTN_TOUCH, input->keybit)) { 969 device->quirks |= HID_QUIRK_NOTOUCH; 970 set_bit(EV_KEY, input->evbit); 971 set_bit(BTN_TOUCH, input->keybit); 972 } 973 map_abs_clear(ABS_PRESSURE); 974 break; 975 976 case 0x32: /* InRange */ 977 switch (field->physical) { 978 case HID_DG_PUCK: 979 map_key(BTN_TOOL_MOUSE); 980 break; 981 case HID_DG_FINGER: 982 map_key(BTN_TOOL_FINGER); 983 break; 984 default: 985 /* 986 * If the physical is not given, 987 * rely on the application. 988 */ 989 if (!field->physical) { 990 switch (field->application) { 991 case HID_DG_TOUCHSCREEN: 992 case HID_DG_TOUCHPAD: 993 map_key_clear(BTN_TOOL_FINGER); 994 break; 995 default: 996 map_key_clear(BTN_TOOL_PEN); 997 } 998 } else { 999 map_key(BTN_TOOL_PEN); 1000 } 1001 break; 1002 } 1003 break; 1004 1005 case 0x3b: /* Battery Strength */ 1006 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false); 1007 usage->type = EV_PWR; 1008 return; 1009 1010 case 0x3c: /* Invert */ 1011 device->quirks &= ~HID_QUIRK_NOINVERT; 1012 map_key_clear(BTN_TOOL_RUBBER); 1013 break; 1014 1015 case 0x3d: /* X Tilt */ 1016 map_abs_clear(ABS_TILT_X); 1017 break; 1018 1019 case 0x3e: /* Y Tilt */ 1020 map_abs_clear(ABS_TILT_Y); 1021 break; 1022 1023 case 0x33: /* Touch */ 1024 case 0x42: /* TipSwitch */ 1025 case 0x43: /* TipSwitch2 */ 1026 device->quirks &= ~HID_QUIRK_NOTOUCH; 1027 map_key_clear(BTN_TOUCH); 1028 break; 1029 1030 case 0x44: /* BarrelSwitch */ 1031 map_key_clear(BTN_STYLUS); 1032 break; 1033 1034 case 0x45: /* ERASER */ 1035 /* 1036 * This event is reported when eraser tip touches the surface. 1037 * Actual eraser (BTN_TOOL_RUBBER) is set and released either 1038 * by Invert if tool reports proximity or by Eraser directly. 1039 */ 1040 if (!test_bit(BTN_TOOL_RUBBER, input->keybit)) { 1041 device->quirks |= HID_QUIRK_NOINVERT; 1042 set_bit(BTN_TOOL_RUBBER, input->keybit); 1043 } 1044 map_key_clear(BTN_TOUCH); 1045 break; 1046 1047 case 0x46: /* TabletPick */ 1048 case 0x5a: /* SecondaryBarrelSwitch */ 1049 map_key_clear(BTN_STYLUS2); 1050 break; 1051 1052 case 0x5b: /* TransducerSerialNumber */ 1053 case 0x6e: /* TransducerSerialNumber2 */ 1054 map_msc(MSC_SERIAL); 1055 break; 1056 1057 default: goto unknown; 1058 } 1059 break; 1060 1061 case HID_UP_TELEPHONY: 1062 switch (usage->hid & HID_USAGE) { 1063 case 0x2f: map_key_clear(KEY_MICMUTE); break; 1064 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 1065 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 1066 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 1067 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 1068 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 1069 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 1070 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 1071 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 1072 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 1073 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 1074 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 1075 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 1076 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 1077 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 1078 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 1079 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 1080 default: goto ignore; 1081 } 1082 break; 1083 1084 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 1085 switch (usage->hid & HID_USAGE) { 1086 case 0x000: goto ignore; 1087 case 0x030: map_key_clear(KEY_POWER); break; 1088 case 0x031: map_key_clear(KEY_RESTART); break; 1089 case 0x032: map_key_clear(KEY_SLEEP); break; 1090 case 0x034: map_key_clear(KEY_SLEEP); break; 1091 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 1092 case 0x036: map_key_clear(BTN_MISC); break; 1093 1094 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 1095 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 1096 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 1097 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 1098 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 1099 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 1100 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 1101 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 1102 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 1103 1104 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 1105 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 1106 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 1107 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 1108 case 0x069: map_key_clear(KEY_RED); break; 1109 case 0x06a: map_key_clear(KEY_GREEN); break; 1110 case 0x06b: map_key_clear(KEY_BLUE); break; 1111 case 0x06c: map_key_clear(KEY_YELLOW); break; 1112 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break; 1113 1114 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 1115 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1116 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 1117 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 1118 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 1119 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 1120 1121 case 0x076: map_key_clear(KEY_CAMERA_ACCESS_ENABLE); break; 1122 case 0x077: map_key_clear(KEY_CAMERA_ACCESS_DISABLE); break; 1123 case 0x078: map_key_clear(KEY_CAMERA_ACCESS_TOGGLE); break; 1124 1125 case 0x079: map_key_clear(KEY_KBDILLUMUP); break; 1126 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break; 1127 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break; 1128 1129 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 1130 case 0x083: map_key_clear(KEY_LAST); break; 1131 case 0x084: map_key_clear(KEY_ENTER); break; 1132 case 0x088: map_key_clear(KEY_PC); break; 1133 case 0x089: map_key_clear(KEY_TV); break; 1134 case 0x08a: map_key_clear(KEY_WWW); break; 1135 case 0x08b: map_key_clear(KEY_DVD); break; 1136 case 0x08c: map_key_clear(KEY_PHONE); break; 1137 case 0x08d: map_key_clear(KEY_PROGRAM); break; 1138 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 1139 case 0x08f: map_key_clear(KEY_GAMES); break; 1140 case 0x090: map_key_clear(KEY_MEMO); break; 1141 case 0x091: map_key_clear(KEY_CD); break; 1142 case 0x092: map_key_clear(KEY_VCR); break; 1143 case 0x093: map_key_clear(KEY_TUNER); break; 1144 case 0x094: map_key_clear(KEY_EXIT); break; 1145 case 0x095: map_key_clear(KEY_HELP); break; 1146 case 0x096: map_key_clear(KEY_TAPE); break; 1147 case 0x097: map_key_clear(KEY_TV2); break; 1148 case 0x098: map_key_clear(KEY_SAT); break; 1149 case 0x09a: map_key_clear(KEY_PVR); break; 1150 1151 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 1152 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 1153 case 0x0a0: map_key_clear(KEY_VCR2); break; 1154 1155 case 0x0b0: map_key_clear(KEY_PLAY); break; 1156 case 0x0b1: map_key_clear(KEY_PAUSE); break; 1157 case 0x0b2: map_key_clear(KEY_RECORD); break; 1158 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 1159 case 0x0b4: map_key_clear(KEY_REWIND); break; 1160 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 1161 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 1162 case 0x0b7: map_key_clear(KEY_STOPCD); break; 1163 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 1164 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 1165 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 1166 case 0x0bf: map_key_clear(KEY_SLOW); break; 1167 1168 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 1169 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 1170 1171 case 0x0d8: map_key_clear(KEY_DICTATE); break; 1172 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break; 1173 1174 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 1175 case 0x0e2: map_key_clear(KEY_MUTE); break; 1176 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 1177 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 1178 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 1179 case 0x0f5: map_key_clear(KEY_SLOW); break; 1180 1181 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 1182 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 1183 case 0x183: map_key_clear(KEY_CONFIG); break; 1184 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 1185 case 0x185: map_key_clear(KEY_EDITOR); break; 1186 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 1187 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 1188 case 0x188: map_key_clear(KEY_PRESENTATION); break; 1189 case 0x189: map_key_clear(KEY_DATABASE); break; 1190 case 0x18a: map_key_clear(KEY_MAIL); break; 1191 case 0x18b: map_key_clear(KEY_NEWS); break; 1192 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 1193 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 1194 case 0x18e: map_key_clear(KEY_CALENDAR); break; 1195 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 1196 case 0x190: map_key_clear(KEY_JOURNAL); break; 1197 case 0x191: map_key_clear(KEY_FINANCE); break; 1198 case 0x192: map_key_clear(KEY_CALC); break; 1199 case 0x193: map_key_clear(KEY_PLAYER); break; 1200 case 0x194: map_key_clear(KEY_FILE); break; 1201 case 0x196: map_key_clear(KEY_WWW); break; 1202 case 0x199: map_key_clear(KEY_CHAT); break; 1203 case 0x19c: map_key_clear(KEY_LOGOFF); break; 1204 case 0x19e: map_key_clear(KEY_COFFEE); break; 1205 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 1206 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 1207 case 0x1a3: map_key_clear(KEY_NEXT); break; 1208 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 1209 case 0x1a6: map_key_clear(KEY_HELP); break; 1210 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 1211 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 1212 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 1213 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 1214 case 0x1b4: map_key_clear(KEY_FILE); break; 1215 case 0x1b6: map_key_clear(KEY_IMAGES); break; 1216 case 0x1b7: map_key_clear(KEY_AUDIO); break; 1217 case 0x1b8: map_key_clear(KEY_VIDEO); break; 1218 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1219 case 0x1bd: map_key_clear(KEY_INFO); break; 1220 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1221 case 0x201: map_key_clear(KEY_NEW); break; 1222 case 0x202: map_key_clear(KEY_OPEN); break; 1223 case 0x203: map_key_clear(KEY_CLOSE); break; 1224 case 0x204: map_key_clear(KEY_EXIT); break; 1225 case 0x207: map_key_clear(KEY_SAVE); break; 1226 case 0x208: map_key_clear(KEY_PRINT); break; 1227 case 0x209: map_key_clear(KEY_PROPS); break; 1228 case 0x21a: map_key_clear(KEY_UNDO); break; 1229 case 0x21b: map_key_clear(KEY_COPY); break; 1230 case 0x21c: map_key_clear(KEY_CUT); break; 1231 case 0x21d: map_key_clear(KEY_PASTE); break; 1232 case 0x21f: map_key_clear(KEY_FIND); break; 1233 case 0x221: map_key_clear(KEY_SEARCH); break; 1234 case 0x222: map_key_clear(KEY_GOTO); break; 1235 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1236 case 0x224: map_key_clear(KEY_BACK); break; 1237 case 0x225: map_key_clear(KEY_FORWARD); break; 1238 case 0x226: map_key_clear(KEY_STOP); break; 1239 case 0x227: map_key_clear(KEY_REFRESH); break; 1240 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1241 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1242 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1243 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1244 case 0x232: map_key_clear(KEY_FULL_SCREEN); break; 1245 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1246 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1247 case 0x238: /* AC Pan */ 1248 set_bit(REL_HWHEEL, input->relbit); 1249 map_rel(REL_HWHEEL_HI_RES); 1250 break; 1251 case 0x23d: map_key_clear(KEY_EDIT); break; 1252 case 0x25f: map_key_clear(KEY_CANCEL); break; 1253 case 0x269: map_key_clear(KEY_INSERT); break; 1254 case 0x26a: map_key_clear(KEY_DELETE); break; 1255 case 0x279: map_key_clear(KEY_REDO); break; 1256 1257 case 0x289: map_key_clear(KEY_REPLY); break; 1258 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1259 case 0x28c: map_key_clear(KEY_SEND); break; 1260 1261 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break; 1262 1263 case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break; 1264 1265 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1266 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1267 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1268 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1269 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1270 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1271 1272 case 0x29f: map_key_clear(KEY_SCALE); break; 1273 1274 default: map_key_clear(KEY_UNKNOWN); 1275 } 1276 break; 1277 1278 case HID_UP_GENDEVCTRLS: 1279 switch (usage->hid) { 1280 case HID_DC_BATTERYSTRENGTH: 1281 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false); 1282 usage->type = EV_PWR; 1283 return; 1284 } 1285 goto unknown; 1286 1287 case HID_UP_BATTERY: 1288 switch (usage->hid) { 1289 case HID_BAT_ABSOLUTESTATEOFCHARGE: 1290 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true); 1291 usage->type = EV_PWR; 1292 return; 1293 case HID_BAT_CHARGING: 1294 usage->type = EV_PWR; 1295 return; 1296 } 1297 goto unknown; 1298 case HID_UP_CAMERA: 1299 switch (usage->hid & HID_USAGE) { 1300 case 0x020: 1301 map_key_clear(KEY_CAMERA_FOCUS); break; 1302 case 0x021: 1303 map_key_clear(KEY_CAMERA); break; 1304 default: 1305 goto ignore; 1306 } 1307 break; 1308 1309 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1310 set_bit(EV_REP, input->evbit); 1311 switch (usage->hid & HID_USAGE) { 1312 case 0x021: map_key_clear(KEY_PRINT); break; 1313 case 0x070: map_key_clear(KEY_HP); break; 1314 case 0x071: map_key_clear(KEY_CAMERA); break; 1315 case 0x072: map_key_clear(KEY_SOUND); break; 1316 case 0x073: map_key_clear(KEY_QUESTION); break; 1317 case 0x080: map_key_clear(KEY_EMAIL); break; 1318 case 0x081: map_key_clear(KEY_CHAT); break; 1319 case 0x082: map_key_clear(KEY_SEARCH); break; 1320 case 0x083: map_key_clear(KEY_CONNECT); break; 1321 case 0x084: map_key_clear(KEY_FINANCE); break; 1322 case 0x085: map_key_clear(KEY_SPORT); break; 1323 case 0x086: map_key_clear(KEY_SHOP); break; 1324 default: goto ignore; 1325 } 1326 break; 1327 1328 case HID_UP_HPVENDOR2: 1329 set_bit(EV_REP, input->evbit); 1330 switch (usage->hid & HID_USAGE) { 1331 case 0x001: map_key_clear(KEY_MICMUTE); break; 1332 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1333 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1334 default: goto ignore; 1335 } 1336 break; 1337 1338 case HID_UP_MSVENDOR: 1339 goto ignore; 1340 1341 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1342 set_bit(EV_REP, input->evbit); 1343 goto ignore; 1344 1345 case HID_UP_LOGIVENDOR: 1346 /* intentional fallback */ 1347 case HID_UP_LOGIVENDOR2: 1348 /* intentional fallback */ 1349 case HID_UP_LOGIVENDOR3: 1350 goto ignore; 1351 1352 case HID_UP_PID: 1353 switch (usage->hid & HID_USAGE) { 1354 case 0xa4: map_key_clear(BTN_DEAD); break; 1355 default: goto ignore; 1356 } 1357 break; 1358 1359 default: 1360 unknown: 1361 if (field->report_size == 1) { 1362 if (field->report->type == HID_OUTPUT_REPORT) { 1363 map_led(LED_MISC); 1364 break; 1365 } 1366 map_key(BTN_MISC); 1367 break; 1368 } 1369 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1370 map_rel(REL_MISC); 1371 break; 1372 } 1373 map_abs(ABS_MISC); 1374 break; 1375 } 1376 1377 mapped: 1378 /* Mapping failed, bail out */ 1379 if (!bit) 1380 return; 1381 1382 if (device->driver->input_mapped && 1383 device->driver->input_mapped(device, hidinput, field, usage, 1384 &bit, &max) < 0) { 1385 /* 1386 * The driver indicated that no further generic handling 1387 * of the usage is desired. 1388 */ 1389 return; 1390 } 1391 1392 set_bit(usage->type, input->evbit); 1393 1394 /* 1395 * This part is *really* controversial: 1396 * - HID aims at being generic so we should do our best to export 1397 * all incoming events 1398 * - HID describes what events are, so there is no reason for ABS_X 1399 * to be mapped to ABS_Y 1400 * - HID is using *_MISC+N as a default value, but nothing prevents 1401 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1402 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1403 * processing) 1404 * 1405 * If devices still want to use this (at their own risk), they will 1406 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1407 * the default should be a reliable mapping. 1408 */ 1409 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1410 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1411 usage->code = find_next_zero_bit(bit, 1412 max + 1, 1413 usage->code); 1414 } else { 1415 device->status |= HID_STAT_DUP_DETECTED; 1416 goto ignore; 1417 } 1418 } 1419 1420 if (usage->code > max) 1421 goto ignore; 1422 1423 if (usage->type == EV_ABS) { 1424 1425 int a = field->logical_minimum; 1426 int b = field->logical_maximum; 1427 1428 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1429 a = field->logical_minimum = 0; 1430 b = field->logical_maximum = 255; 1431 } 1432 1433 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1434 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1435 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1436 1437 input_abs_set_res(input, usage->code, 1438 hidinput_calc_abs_res(field, usage->code)); 1439 1440 /* use a larger default input buffer for MT devices */ 1441 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1442 input_set_events_per_packet(input, 60); 1443 } 1444 1445 if (usage->type == EV_ABS && 1446 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1447 int i; 1448 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1449 input_set_abs_params(input, i, -1, 1, 0, 0); 1450 set_bit(i, input->absbit); 1451 } 1452 if (usage->hat_dir && !field->dpad) 1453 field->dpad = usage->code; 1454 } 1455 1456 /* for those devices which produce Consumer volume usage as relative, 1457 * we emulate pressing volumeup/volumedown appropriate number of times 1458 * in hidinput_hid_event() 1459 */ 1460 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1461 (usage->code == ABS_VOLUME)) { 1462 set_bit(KEY_VOLUMEUP, input->keybit); 1463 set_bit(KEY_VOLUMEDOWN, input->keybit); 1464 } 1465 1466 if (usage->type == EV_KEY) { 1467 set_bit(EV_MSC, input->evbit); 1468 set_bit(MSC_SCAN, input->mscbit); 1469 } 1470 1471 return; 1472 1473 ignore: 1474 usage->type = 0; 1475 usage->code = 0; 1476 } 1477 1478 static void hidinput_handle_scroll(struct hid_usage *usage, 1479 struct input_dev *input, 1480 __s32 value) 1481 { 1482 int code; 1483 int hi_res, lo_res; 1484 1485 if (value == 0) 1486 return; 1487 1488 if (usage->code == REL_WHEEL_HI_RES) 1489 code = REL_WHEEL; 1490 else 1491 code = REL_HWHEEL; 1492 1493 /* 1494 * Windows reports one wheel click as value 120. Where a high-res 1495 * scroll wheel is present, a fraction of 120 is reported instead. 1496 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1497 * adhere to the 120 expectation. 1498 */ 1499 hi_res = value * 120/usage->resolution_multiplier; 1500 1501 usage->wheel_accumulated += hi_res; 1502 lo_res = usage->wheel_accumulated/120; 1503 if (lo_res) 1504 usage->wheel_accumulated -= lo_res * 120; 1505 1506 input_event(input, EV_REL, code, lo_res); 1507 input_event(input, EV_REL, usage->code, hi_res); 1508 } 1509 1510 static void hid_report_release_tool(struct hid_report *report, struct input_dev *input, 1511 unsigned int tool) 1512 { 1513 /* if the given tool is not currently reported, ignore */ 1514 if (!test_bit(tool, input->key)) 1515 return; 1516 1517 /* 1518 * if the given tool was previously set, release it, 1519 * release any TOUCH and send an EV_SYN 1520 */ 1521 input_event(input, EV_KEY, BTN_TOUCH, 0); 1522 input_event(input, EV_KEY, tool, 0); 1523 input_event(input, EV_SYN, SYN_REPORT, 0); 1524 1525 report->tool = 0; 1526 } 1527 1528 static void hid_report_set_tool(struct hid_report *report, struct input_dev *input, 1529 unsigned int new_tool) 1530 { 1531 if (report->tool != new_tool) 1532 hid_report_release_tool(report, input, report->tool); 1533 1534 input_event(input, EV_KEY, new_tool, 1); 1535 report->tool = new_tool; 1536 } 1537 1538 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1539 { 1540 struct input_dev *input; 1541 struct hid_report *report = field->report; 1542 unsigned *quirks = &hid->quirks; 1543 1544 if (!usage->type) 1545 return; 1546 1547 if (usage->type == EV_PWR) { 1548 bool handled = hidinput_set_battery_charge_status(hid, usage->hid, value); 1549 1550 if (!handled) 1551 hidinput_update_battery(hid, value); 1552 1553 return; 1554 } 1555 1556 if (!field->hidinput) 1557 return; 1558 1559 input = field->hidinput->input; 1560 1561 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1562 int hat_dir = usage->hat_dir; 1563 if (!hat_dir) 1564 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1565 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1566 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1567 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1568 return; 1569 } 1570 1571 /* 1572 * Ignore out-of-range values as per HID specification, 1573 * section 5.10 and 6.2.25, when NULL state bit is present. 1574 * When it's not, clamp the value to match Microsoft's input 1575 * driver as mentioned in "Required HID usages for digitizers": 1576 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1577 * 1578 * The logical_minimum < logical_maximum check is done so that we 1579 * don't unintentionally discard values sent by devices which 1580 * don't specify logical min and max. 1581 */ 1582 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1583 field->logical_minimum < field->logical_maximum) { 1584 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1585 (value < field->logical_minimum || 1586 value > field->logical_maximum)) { 1587 dbg_hid("Ignoring out-of-range value %x\n", value); 1588 return; 1589 } 1590 value = clamp(value, 1591 field->logical_minimum, 1592 field->logical_maximum); 1593 } 1594 1595 switch (usage->hid) { 1596 case HID_DG_ERASER: 1597 report->tool_active |= !!value; 1598 1599 /* 1600 * if eraser is set, we must enforce BTN_TOOL_RUBBER 1601 * to accommodate for devices not following the spec. 1602 */ 1603 if (value) 1604 hid_report_set_tool(report, input, BTN_TOOL_RUBBER); 1605 else if (report->tool != BTN_TOOL_RUBBER) 1606 /* value is off, tool is not rubber, ignore */ 1607 return; 1608 else if (*quirks & HID_QUIRK_NOINVERT && 1609 !test_bit(BTN_TOUCH, input->key)) { 1610 /* 1611 * There is no invert to release the tool, let hid_input 1612 * send BTN_TOUCH with scancode and release the tool after. 1613 */ 1614 hid_report_release_tool(report, input, BTN_TOOL_RUBBER); 1615 return; 1616 } 1617 1618 /* let hid-input set BTN_TOUCH */ 1619 break; 1620 1621 case HID_DG_INVERT: 1622 report->tool_active |= !!value; 1623 1624 /* 1625 * If invert is set, we store BTN_TOOL_RUBBER. 1626 */ 1627 if (value) 1628 hid_report_set_tool(report, input, BTN_TOOL_RUBBER); 1629 else if (!report->tool_active) 1630 /* tool_active not set means Invert and Eraser are not set */ 1631 hid_report_release_tool(report, input, BTN_TOOL_RUBBER); 1632 1633 /* no further processing */ 1634 return; 1635 1636 case HID_DG_INRANGE: 1637 report->tool_active |= !!value; 1638 1639 if (report->tool_active) { 1640 /* 1641 * if tool is not set but is marked as active, 1642 * assume ours 1643 */ 1644 if (!report->tool) 1645 report->tool = usage->code; 1646 1647 /* drivers may have changed the value behind our back, resend it */ 1648 hid_report_set_tool(report, input, report->tool); 1649 } else { 1650 hid_report_release_tool(report, input, usage->code); 1651 } 1652 1653 /* reset tool_active for the next event */ 1654 report->tool_active = false; 1655 1656 /* no further processing */ 1657 return; 1658 1659 case HID_DG_TIPSWITCH: 1660 report->tool_active |= !!value; 1661 1662 /* if tool is set to RUBBER we should ignore the current value */ 1663 if (report->tool == BTN_TOOL_RUBBER) 1664 return; 1665 1666 break; 1667 1668 case HID_DG_TIPPRESSURE: 1669 if (*quirks & HID_QUIRK_NOTOUCH) { 1670 int a = field->logical_minimum; 1671 int b = field->logical_maximum; 1672 1673 if (value > a + ((b - a) >> 3)) { 1674 input_event(input, EV_KEY, BTN_TOUCH, 1); 1675 report->tool_active = true; 1676 } 1677 } 1678 break; 1679 1680 case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */ 1681 dbg_hid("Maximum Effects - %d\n",value); 1682 return; 1683 1684 case HID_UP_PID | 0x7fUL: 1685 dbg_hid("PID Pool Report\n"); 1686 return; 1687 } 1688 1689 switch (usage->type) { 1690 case EV_KEY: 1691 if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1692 return; 1693 break; 1694 1695 case EV_REL: 1696 if (usage->code == REL_WHEEL_HI_RES || 1697 usage->code == REL_HWHEEL_HI_RES) { 1698 hidinput_handle_scroll(usage, input, value); 1699 return; 1700 } 1701 break; 1702 1703 case EV_ABS: 1704 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1705 usage->code == ABS_VOLUME) { 1706 int count = abs(value); 1707 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1708 int i; 1709 1710 for (i = 0; i < count; i++) { 1711 input_event(input, EV_KEY, direction, 1); 1712 input_sync(input); 1713 input_event(input, EV_KEY, direction, 0); 1714 input_sync(input); 1715 } 1716 return; 1717 1718 } else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) || 1719 ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y)) 1720 value = field->logical_maximum - value; 1721 break; 1722 } 1723 1724 /* 1725 * Ignore reports for absolute data if the data didn't change. This is 1726 * not only an optimization but also fixes 'dead' key reports. Some 1727 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1728 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1729 * can only have one of them physically available. The 'dead' keys 1730 * report constant 0. As all map to the same keycode, they'd confuse 1731 * the input layer. If we filter the 'dead' keys on the HID level, we 1732 * skip the keycode translation and only forward real events. 1733 */ 1734 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1735 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1736 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1737 usage->usage_index < field->maxusage && 1738 value == field->value[usage->usage_index]) 1739 return; 1740 1741 /* report the usage code as scancode if the key status has changed */ 1742 if (usage->type == EV_KEY && 1743 (!test_bit(usage->code, input->key)) == value) 1744 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1745 1746 input_event(input, usage->type, usage->code, value); 1747 1748 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1749 usage->type == EV_KEY && value) { 1750 input_sync(input); 1751 input_event(input, usage->type, usage->code, 0); 1752 } 1753 } 1754 1755 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1756 { 1757 struct hid_input *hidinput; 1758 1759 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1760 return; 1761 1762 list_for_each_entry(hidinput, &hid->inputs, list) 1763 input_sync(hidinput->input); 1764 } 1765 EXPORT_SYMBOL_GPL(hidinput_report_event); 1766 1767 static int hidinput_find_field(struct hid_device *hid, unsigned int type, 1768 unsigned int code, struct hid_field **field) 1769 { 1770 struct hid_report *report; 1771 int i, j; 1772 1773 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1774 for (i = 0; i < report->maxfield; i++) { 1775 *field = report->field[i]; 1776 for (j = 0; j < (*field)->maxusage; j++) 1777 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1778 return j; 1779 } 1780 } 1781 return -1; 1782 } 1783 1784 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1785 { 1786 struct hid_report *report; 1787 struct hid_field *field; 1788 int i, j; 1789 1790 list_for_each_entry(report, 1791 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1792 list) { 1793 for (i = 0; i < report->maxfield; i++) { 1794 field = report->field[i]; 1795 for (j = 0; j < field->maxusage; j++) 1796 if (field->usage[j].type == EV_LED) 1797 return field; 1798 } 1799 } 1800 return NULL; 1801 } 1802 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1803 1804 unsigned int hidinput_count_leds(struct hid_device *hid) 1805 { 1806 struct hid_report *report; 1807 struct hid_field *field; 1808 int i, j; 1809 unsigned int count = 0; 1810 1811 list_for_each_entry(report, 1812 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1813 list) { 1814 for (i = 0; i < report->maxfield; i++) { 1815 field = report->field[i]; 1816 for (j = 0; j < field->maxusage; j++) 1817 if (field->usage[j].type == EV_LED && 1818 field->value[j]) 1819 count += 1; 1820 } 1821 } 1822 return count; 1823 } 1824 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1825 1826 static void hidinput_led_worker(struct work_struct *work) 1827 { 1828 struct hid_device *hid = container_of(work, struct hid_device, 1829 led_work); 1830 struct hid_field *field; 1831 struct hid_report *report; 1832 int ret; 1833 u32 len; 1834 __u8 *buf; 1835 1836 field = hidinput_get_led_field(hid); 1837 if (!field) 1838 return; 1839 1840 /* 1841 * field->report is accessed unlocked regarding HID core. So there might 1842 * be another incoming SET-LED request from user-space, which changes 1843 * the LED state while we assemble our outgoing buffer. However, this 1844 * doesn't matter as hid_output_report() correctly converts it into a 1845 * boolean value no matter what information is currently set on the LED 1846 * field (even garbage). So the remote device will always get a valid 1847 * request. 1848 * And in case we send a wrong value, a next led worker is spawned 1849 * for every SET-LED request so the following worker will send the 1850 * correct value, guaranteed! 1851 */ 1852 1853 report = field->report; 1854 1855 /* use custom SET_REPORT request if possible (asynchronous) */ 1856 if (hid->ll_driver->request) 1857 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1858 1859 /* fall back to generic raw-output-report */ 1860 len = hid_report_len(report); 1861 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1862 if (!buf) 1863 return; 1864 1865 hid_output_report(report, buf); 1866 /* synchronous output report */ 1867 ret = hid_hw_output_report(hid, buf, len); 1868 if (ret == -ENOSYS) 1869 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1870 HID_REQ_SET_REPORT); 1871 kfree(buf); 1872 } 1873 1874 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1875 unsigned int code, int value) 1876 { 1877 struct hid_device *hid = input_get_drvdata(dev); 1878 struct hid_field *field; 1879 int offset; 1880 1881 if (type == EV_FF) 1882 return input_ff_event(dev, type, code, value); 1883 1884 if (type != EV_LED) 1885 return -1; 1886 1887 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1888 hid_warn(dev, "event field not found\n"); 1889 return -1; 1890 } 1891 1892 hid_set_field(field, offset, value); 1893 1894 schedule_work(&hid->led_work); 1895 return 0; 1896 } 1897 1898 static int hidinput_open(struct input_dev *dev) 1899 { 1900 struct hid_device *hid = input_get_drvdata(dev); 1901 1902 return hid_hw_open(hid); 1903 } 1904 1905 static void hidinput_close(struct input_dev *dev) 1906 { 1907 struct hid_device *hid = input_get_drvdata(dev); 1908 1909 hid_hw_close(hid); 1910 } 1911 1912 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1913 struct hid_report *report, bool use_logical_max) 1914 { 1915 struct hid_usage *usage; 1916 bool update_needed = false; 1917 bool get_report_completed = false; 1918 int i, j; 1919 1920 if (report->maxfield == 0) 1921 return false; 1922 1923 for (i = 0; i < report->maxfield; i++) { 1924 __s32 value = use_logical_max ? 1925 report->field[i]->logical_maximum : 1926 report->field[i]->logical_minimum; 1927 1928 /* There is no good reason for a Resolution 1929 * Multiplier to have a count other than 1. 1930 * Ignore that case. 1931 */ 1932 if (report->field[i]->report_count != 1) 1933 continue; 1934 1935 for (j = 0; j < report->field[i]->maxusage; j++) { 1936 usage = &report->field[i]->usage[j]; 1937 1938 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1939 continue; 1940 1941 /* 1942 * If we have more than one feature within this 1943 * report we need to fill in the bits from the 1944 * others before we can overwrite the ones for the 1945 * Resolution Multiplier. 1946 * 1947 * But if we're not allowed to read from the device, 1948 * we just bail. Such a device should not exist 1949 * anyway. 1950 */ 1951 if (!get_report_completed && report->maxfield > 1) { 1952 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) 1953 return update_needed; 1954 1955 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1956 hid_hw_wait(hid); 1957 get_report_completed = true; 1958 } 1959 1960 report->field[i]->value[j] = value; 1961 update_needed = true; 1962 } 1963 } 1964 1965 return update_needed; 1966 } 1967 1968 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1969 { 1970 struct hid_report_enum *rep_enum; 1971 struct hid_report *rep; 1972 int ret; 1973 1974 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1975 list_for_each_entry(rep, &rep_enum->report_list, list) { 1976 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1977 rep, true); 1978 1979 if (update_needed) { 1980 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1981 if (ret) { 1982 __hidinput_change_resolution_multipliers(hid, 1983 rep, false); 1984 return; 1985 } 1986 } 1987 } 1988 1989 /* refresh our structs */ 1990 hid_setup_resolution_multiplier(hid); 1991 } 1992 1993 static void report_features(struct hid_device *hid) 1994 { 1995 struct hid_driver *drv = hid->driver; 1996 struct hid_report_enum *rep_enum; 1997 struct hid_report *rep; 1998 struct hid_usage *usage; 1999 int i, j; 2000 2001 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 2002 list_for_each_entry(rep, &rep_enum->report_list, list) 2003 for (i = 0; i < rep->maxfield; i++) { 2004 /* Ignore if report count is out of bounds. */ 2005 if (rep->field[i]->report_count < 1) 2006 continue; 2007 2008 for (j = 0; j < rep->field[i]->maxusage; j++) { 2009 usage = &rep->field[i]->usage[j]; 2010 2011 /* Verify if Battery Strength feature is available */ 2012 if (usage->hid == HID_DC_BATTERYSTRENGTH) 2013 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 2014 rep->field[i], false); 2015 2016 if (drv->feature_mapping) 2017 drv->feature_mapping(hid, rep->field[i], usage); 2018 } 2019 } 2020 } 2021 2022 static struct hid_input *hidinput_allocate(struct hid_device *hid, 2023 unsigned int application) 2024 { 2025 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 2026 struct input_dev *input_dev = input_allocate_device(); 2027 const char *suffix = NULL; 2028 size_t suffix_len, name_len; 2029 2030 if (!hidinput || !input_dev) 2031 goto fail; 2032 2033 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 2034 hid->maxapplication > 1) { 2035 switch (application) { 2036 case HID_GD_KEYBOARD: 2037 suffix = "Keyboard"; 2038 break; 2039 case HID_GD_KEYPAD: 2040 suffix = "Keypad"; 2041 break; 2042 case HID_GD_MOUSE: 2043 suffix = "Mouse"; 2044 break; 2045 case HID_DG_PEN: 2046 /* 2047 * yes, there is an issue here: 2048 * DG_PEN -> "Stylus" 2049 * DG_STYLUS -> "Pen" 2050 * But changing this now means users with config snippets 2051 * will have to change it and the test suite will not be happy. 2052 */ 2053 suffix = "Stylus"; 2054 break; 2055 case HID_DG_STYLUS: 2056 suffix = "Pen"; 2057 break; 2058 case HID_DG_TOUCHSCREEN: 2059 suffix = "Touchscreen"; 2060 break; 2061 case HID_DG_TOUCHPAD: 2062 suffix = "Touchpad"; 2063 break; 2064 case HID_GD_SYSTEM_CONTROL: 2065 suffix = "System Control"; 2066 break; 2067 case HID_CP_CONSUMER_CONTROL: 2068 suffix = "Consumer Control"; 2069 break; 2070 case HID_GD_WIRELESS_RADIO_CTLS: 2071 suffix = "Wireless Radio Control"; 2072 break; 2073 case HID_GD_SYSTEM_MULTIAXIS: 2074 suffix = "System Multi Axis"; 2075 break; 2076 default: 2077 break; 2078 } 2079 } 2080 2081 if (suffix) { 2082 name_len = strlen(hid->name); 2083 suffix_len = strlen(suffix); 2084 if ((name_len < suffix_len) || 2085 strcmp(hid->name + name_len - suffix_len, suffix)) { 2086 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 2087 hid->name, suffix); 2088 if (!hidinput->name) 2089 goto fail; 2090 } 2091 } 2092 2093 input_set_drvdata(input_dev, hid); 2094 input_dev->event = hidinput_input_event; 2095 input_dev->open = hidinput_open; 2096 input_dev->close = hidinput_close; 2097 input_dev->setkeycode = hidinput_setkeycode; 2098 input_dev->getkeycode = hidinput_getkeycode; 2099 2100 input_dev->name = hidinput->name ? hidinput->name : hid->name; 2101 input_dev->phys = hid->phys; 2102 input_dev->uniq = hid->uniq; 2103 input_dev->id.bustype = hid->bus; 2104 input_dev->id.vendor = hid->vendor; 2105 input_dev->id.product = hid->product; 2106 input_dev->id.version = hid->version; 2107 input_dev->dev.parent = &hid->dev; 2108 2109 hidinput->input = input_dev; 2110 hidinput->application = application; 2111 list_add_tail(&hidinput->list, &hid->inputs); 2112 2113 INIT_LIST_HEAD(&hidinput->reports); 2114 2115 return hidinput; 2116 2117 fail: 2118 kfree(hidinput); 2119 input_free_device(input_dev); 2120 hid_err(hid, "Out of memory during hid input probe\n"); 2121 return NULL; 2122 } 2123 2124 static bool hidinput_has_been_populated(struct hid_input *hidinput) 2125 { 2126 int i; 2127 unsigned long r = 0; 2128 2129 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 2130 r |= hidinput->input->evbit[i]; 2131 2132 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 2133 r |= hidinput->input->keybit[i]; 2134 2135 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 2136 r |= hidinput->input->relbit[i]; 2137 2138 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 2139 r |= hidinput->input->absbit[i]; 2140 2141 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 2142 r |= hidinput->input->mscbit[i]; 2143 2144 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 2145 r |= hidinput->input->ledbit[i]; 2146 2147 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 2148 r |= hidinput->input->sndbit[i]; 2149 2150 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 2151 r |= hidinput->input->ffbit[i]; 2152 2153 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 2154 r |= hidinput->input->swbit[i]; 2155 2156 return !!r; 2157 } 2158 2159 static void hidinput_cleanup_hidinput(struct hid_device *hid, 2160 struct hid_input *hidinput) 2161 { 2162 struct hid_report *report; 2163 int i, k; 2164 2165 list_del(&hidinput->list); 2166 input_free_device(hidinput->input); 2167 kfree(hidinput->name); 2168 2169 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 2170 if (k == HID_OUTPUT_REPORT && 2171 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 2172 continue; 2173 2174 list_for_each_entry(report, &hid->report_enum[k].report_list, 2175 list) { 2176 2177 for (i = 0; i < report->maxfield; i++) 2178 if (report->field[i]->hidinput == hidinput) 2179 report->field[i]->hidinput = NULL; 2180 } 2181 } 2182 2183 kfree(hidinput); 2184 } 2185 2186 static struct hid_input *hidinput_match(struct hid_report *report) 2187 { 2188 struct hid_device *hid = report->device; 2189 struct hid_input *hidinput; 2190 2191 list_for_each_entry(hidinput, &hid->inputs, list) { 2192 if (hidinput->report && 2193 hidinput->report->id == report->id) 2194 return hidinput; 2195 } 2196 2197 return NULL; 2198 } 2199 2200 static struct hid_input *hidinput_match_application(struct hid_report *report) 2201 { 2202 struct hid_device *hid = report->device; 2203 struct hid_input *hidinput; 2204 2205 list_for_each_entry(hidinput, &hid->inputs, list) { 2206 if (hidinput->application == report->application) 2207 return hidinput; 2208 2209 /* 2210 * Keep SystemControl and ConsumerControl applications together 2211 * with the main keyboard, if present. 2212 */ 2213 if ((report->application == HID_GD_SYSTEM_CONTROL || 2214 report->application == HID_CP_CONSUMER_CONTROL) && 2215 hidinput->application == HID_GD_KEYBOARD) { 2216 return hidinput; 2217 } 2218 } 2219 2220 return NULL; 2221 } 2222 2223 static inline void hidinput_configure_usages(struct hid_input *hidinput, 2224 struct hid_report *report) 2225 { 2226 int i, j, k; 2227 int first_field_index = 0; 2228 int slot_collection_index = -1; 2229 int prev_collection_index = -1; 2230 unsigned int slot_idx = 0; 2231 struct hid_field *field; 2232 2233 /* 2234 * First tag all the fields that are part of a slot, 2235 * a slot needs to have one Contact ID in the collection 2236 */ 2237 for (i = 0; i < report->maxfield; i++) { 2238 field = report->field[i]; 2239 2240 /* ignore fields without usage */ 2241 if (field->maxusage < 1) 2242 continue; 2243 2244 /* 2245 * janitoring when collection_index changes 2246 */ 2247 if (prev_collection_index != field->usage->collection_index) { 2248 prev_collection_index = field->usage->collection_index; 2249 first_field_index = i; 2250 } 2251 2252 /* 2253 * if we already found a Contact ID in the collection, 2254 * tag and continue to the next. 2255 */ 2256 if (slot_collection_index == field->usage->collection_index) { 2257 field->slot_idx = slot_idx; 2258 continue; 2259 } 2260 2261 /* check if the current field has Contact ID */ 2262 for (j = 0; j < field->maxusage; j++) { 2263 if (field->usage[j].hid == HID_DG_CONTACTID) { 2264 slot_collection_index = field->usage->collection_index; 2265 slot_idx++; 2266 2267 /* 2268 * mark all previous fields and this one in the 2269 * current collection to be slotted. 2270 */ 2271 for (k = first_field_index; k <= i; k++) 2272 report->field[k]->slot_idx = slot_idx; 2273 break; 2274 } 2275 } 2276 } 2277 2278 for (i = 0; i < report->maxfield; i++) 2279 for (j = 0; j < report->field[i]->maxusage; j++) 2280 hidinput_configure_usage(hidinput, report->field[i], 2281 report->field[i]->usage + j, 2282 j); 2283 } 2284 2285 /* 2286 * Register the input device; print a message. 2287 * Configure the input layer interface 2288 * Read all reports and initialize the absolute field values. 2289 */ 2290 2291 int hidinput_connect(struct hid_device *hid, unsigned int force) 2292 { 2293 struct hid_driver *drv = hid->driver; 2294 struct hid_report *report; 2295 struct hid_input *next, *hidinput = NULL; 2296 unsigned int application; 2297 int i, k; 2298 2299 INIT_LIST_HEAD(&hid->inputs); 2300 INIT_WORK(&hid->led_work, hidinput_led_worker); 2301 2302 hid->status &= ~HID_STAT_DUP_DETECTED; 2303 2304 if (!force) { 2305 for (i = 0; i < hid->maxcollection; i++) { 2306 struct hid_collection *col = &hid->collection[i]; 2307 if (col->type == HID_COLLECTION_APPLICATION || 2308 col->type == HID_COLLECTION_PHYSICAL) 2309 if (IS_INPUT_APPLICATION(col->usage)) 2310 break; 2311 } 2312 2313 if (i == hid->maxcollection) 2314 return -1; 2315 } 2316 2317 report_features(hid); 2318 2319 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 2320 if (k == HID_OUTPUT_REPORT && 2321 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 2322 continue; 2323 2324 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 2325 2326 if (!report->maxfield) 2327 continue; 2328 2329 application = report->application; 2330 2331 /* 2332 * Find the previous hidinput report attached 2333 * to this report id. 2334 */ 2335 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 2336 hidinput = hidinput_match(report); 2337 else if (hid->maxapplication > 1 && 2338 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 2339 hidinput = hidinput_match_application(report); 2340 2341 if (!hidinput) { 2342 hidinput = hidinput_allocate(hid, application); 2343 if (!hidinput) 2344 goto out_unwind; 2345 } 2346 2347 hidinput_configure_usages(hidinput, report); 2348 2349 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 2350 hidinput->report = report; 2351 2352 list_add_tail(&report->hidinput_list, 2353 &hidinput->reports); 2354 } 2355 } 2356 2357 hidinput_change_resolution_multipliers(hid); 2358 2359 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 2360 if (drv->input_configured && 2361 drv->input_configured(hid, hidinput)) 2362 goto out_unwind; 2363 2364 if (!hidinput_has_been_populated(hidinput)) { 2365 /* no need to register an input device not populated */ 2366 hidinput_cleanup_hidinput(hid, hidinput); 2367 continue; 2368 } 2369 2370 if (input_register_device(hidinput->input)) 2371 goto out_unwind; 2372 hidinput->registered = true; 2373 } 2374 2375 if (list_empty(&hid->inputs)) { 2376 hid_err(hid, "No inputs registered, leaving\n"); 2377 goto out_unwind; 2378 } 2379 2380 if (hid->status & HID_STAT_DUP_DETECTED) 2381 hid_dbg(hid, 2382 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 2383 2384 return 0; 2385 2386 out_unwind: 2387 /* unwind the ones we already registered */ 2388 hidinput_disconnect(hid); 2389 2390 return -1; 2391 } 2392 EXPORT_SYMBOL_GPL(hidinput_connect); 2393 2394 void hidinput_disconnect(struct hid_device *hid) 2395 { 2396 struct hid_input *hidinput, *next; 2397 2398 hidinput_cleanup_battery(hid); 2399 2400 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 2401 list_del(&hidinput->list); 2402 if (hidinput->registered) 2403 input_unregister_device(hidinput->input); 2404 else 2405 input_free_device(hidinput->input); 2406 kfree(hidinput->name); 2407 kfree(hidinput); 2408 } 2409 2410 /* led_work is spawned by input_dev callbacks, but doesn't access the 2411 * parent input_dev at all. Once all input devices are removed, we 2412 * know that led_work will never get restarted, so we can cancel it 2413 * synchronously and are safe. */ 2414 cancel_work_sync(&hid->led_work); 2415 } 2416 EXPORT_SYMBOL_GPL(hidinput_disconnect); 2417 2418 #ifdef CONFIG_HID_KUNIT_TEST 2419 #include "hid-input-test.c" 2420 #endif 2421