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 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c)) 52 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c)) 53 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c)) 54 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c)) 55 56 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 57 &max, EV_ABS, (c)) 58 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 59 &max, EV_KEY, (c)) 60 61 static bool match_scancode(struct hid_usage *usage, 62 unsigned int cur_idx, unsigned int scancode) 63 { 64 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode; 65 } 66 67 static bool match_keycode(struct hid_usage *usage, 68 unsigned int cur_idx, unsigned int keycode) 69 { 70 /* 71 * We should exclude unmapped usages when doing lookup by keycode. 72 */ 73 return (usage->type == EV_KEY && usage->code == keycode); 74 } 75 76 static bool match_index(struct hid_usage *usage, 77 unsigned int cur_idx, unsigned int idx) 78 { 79 return cur_idx == idx; 80 } 81 82 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage, 83 unsigned int cur_idx, unsigned int val); 84 85 static struct hid_usage *hidinput_find_key(struct hid_device *hid, 86 hid_usage_cmp_t match, 87 unsigned int value, 88 unsigned int *usage_idx) 89 { 90 unsigned int i, j, k, cur_idx = 0; 91 struct hid_report *report; 92 struct hid_usage *usage; 93 94 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 95 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 96 for (i = 0; i < report->maxfield; i++) { 97 for (j = 0; j < report->field[i]->maxusage; j++) { 98 usage = report->field[i]->usage + j; 99 if (usage->type == EV_KEY || usage->type == 0) { 100 if (match(usage, cur_idx, value)) { 101 if (usage_idx) 102 *usage_idx = cur_idx; 103 return usage; 104 } 105 cur_idx++; 106 } 107 } 108 } 109 } 110 } 111 return NULL; 112 } 113 114 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid, 115 const struct input_keymap_entry *ke, 116 unsigned int *index) 117 { 118 struct hid_usage *usage; 119 unsigned int scancode; 120 121 if (ke->flags & INPUT_KEYMAP_BY_INDEX) 122 usage = hidinput_find_key(hid, match_index, ke->index, index); 123 else if (input_scancode_to_scalar(ke, &scancode) == 0) 124 usage = hidinput_find_key(hid, match_scancode, scancode, index); 125 else 126 usage = NULL; 127 128 return usage; 129 } 130 131 static int hidinput_getkeycode(struct input_dev *dev, 132 struct input_keymap_entry *ke) 133 { 134 struct hid_device *hid = input_get_drvdata(dev); 135 struct hid_usage *usage; 136 unsigned int scancode, index; 137 138 usage = hidinput_locate_usage(hid, ke, &index); 139 if (usage) { 140 ke->keycode = usage->type == EV_KEY ? 141 usage->code : KEY_RESERVED; 142 ke->index = index; 143 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE); 144 ke->len = sizeof(scancode); 145 memcpy(ke->scancode, &scancode, sizeof(scancode)); 146 return 0; 147 } 148 149 return -EINVAL; 150 } 151 152 static int hidinput_setkeycode(struct input_dev *dev, 153 const struct input_keymap_entry *ke, 154 unsigned int *old_keycode) 155 { 156 struct hid_device *hid = input_get_drvdata(dev); 157 struct hid_usage *usage; 158 159 usage = hidinput_locate_usage(hid, ke, NULL); 160 if (usage) { 161 *old_keycode = usage->type == EV_KEY ? 162 usage->code : KEY_RESERVED; 163 usage->code = ke->keycode; 164 165 clear_bit(*old_keycode, dev->keybit); 166 set_bit(usage->code, dev->keybit); 167 dbg_hid("Assigned keycode %d to HID usage code %x\n", 168 usage->code, usage->hid); 169 170 /* 171 * Set the keybit for the old keycode if the old keycode is used 172 * by another key 173 */ 174 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL)) 175 set_bit(*old_keycode, dev->keybit); 176 177 return 0; 178 } 179 180 return -EINVAL; 181 } 182 183 184 /** 185 * hidinput_calc_abs_res - calculate an absolute axis resolution 186 * @field: the HID report field to calculate resolution for 187 * @code: axis code 188 * 189 * The formula is: 190 * (logical_maximum - logical_minimum) 191 * resolution = ---------------------------------------------------------- 192 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent 193 * 194 * as seen in the HID specification v1.11 6.2.2.7 Global Items. 195 * 196 * Only exponent 1 length units are processed. Centimeters and inches are 197 * converted to millimeters. Degrees are converted to radians. 198 */ 199 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) 200 { 201 __s32 unit_exponent = field->unit_exponent; 202 __s32 logical_extents = field->logical_maximum - 203 field->logical_minimum; 204 __s32 physical_extents = field->physical_maximum - 205 field->physical_minimum; 206 __s32 prev; 207 208 /* Check if the extents are sane */ 209 if (logical_extents <= 0 || physical_extents <= 0) 210 return 0; 211 212 /* 213 * Verify and convert units. 214 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding 215 */ 216 switch (code) { 217 case ABS_X: 218 case ABS_Y: 219 case ABS_Z: 220 case ABS_MT_POSITION_X: 221 case ABS_MT_POSITION_Y: 222 case ABS_MT_TOOL_X: 223 case ABS_MT_TOOL_Y: 224 case ABS_MT_TOUCH_MAJOR: 225 case ABS_MT_TOUCH_MINOR: 226 if (field->unit == 0x11) { /* If centimeters */ 227 /* Convert to millimeters */ 228 unit_exponent += 1; 229 } else if (field->unit == 0x13) { /* If inches */ 230 /* Convert to millimeters */ 231 prev = physical_extents; 232 physical_extents *= 254; 233 if (physical_extents < prev) 234 return 0; 235 unit_exponent -= 1; 236 } else { 237 return 0; 238 } 239 break; 240 241 case ABS_RX: 242 case ABS_RY: 243 case ABS_RZ: 244 case ABS_WHEEL: 245 case ABS_TILT_X: 246 case ABS_TILT_Y: 247 if (field->unit == 0x14) { /* If degrees */ 248 /* Convert to radians */ 249 prev = logical_extents; 250 logical_extents *= 573; 251 if (logical_extents < prev) 252 return 0; 253 unit_exponent += 1; 254 } else if (field->unit != 0x12) { /* If not radians */ 255 return 0; 256 } 257 break; 258 259 default: 260 return 0; 261 } 262 263 /* Apply negative unit exponent */ 264 for (; unit_exponent < 0; unit_exponent++) { 265 prev = logical_extents; 266 logical_extents *= 10; 267 if (logical_extents < prev) 268 return 0; 269 } 270 /* Apply positive unit exponent */ 271 for (; unit_exponent > 0; unit_exponent--) { 272 prev = physical_extents; 273 physical_extents *= 10; 274 if (physical_extents < prev) 275 return 0; 276 } 277 278 /* Calculate resolution */ 279 return DIV_ROUND_CLOSEST(logical_extents, physical_extents); 280 } 281 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res); 282 283 #ifdef CONFIG_HID_BATTERY_STRENGTH 284 static enum power_supply_property hidinput_battery_props[] = { 285 POWER_SUPPLY_PROP_PRESENT, 286 POWER_SUPPLY_PROP_ONLINE, 287 POWER_SUPPLY_PROP_CAPACITY, 288 POWER_SUPPLY_PROP_MODEL_NAME, 289 POWER_SUPPLY_PROP_STATUS, 290 POWER_SUPPLY_PROP_SCOPE, 291 }; 292 293 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */ 294 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */ 295 #define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */ 296 297 static const struct hid_device_id hid_battery_quirks[] = { 298 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 299 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO), 300 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 301 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 302 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI), 303 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 304 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 305 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI), 306 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 307 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 308 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO), 309 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 310 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 311 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI), 312 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 313 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, 314 USB_DEVICE_ID_ELECOM_BM084), 315 HID_BATTERY_QUIRK_IGNORE }, 316 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL, 317 USB_DEVICE_ID_SYMBOL_SCANNER_3), 318 HID_BATTERY_QUIRK_IGNORE }, 319 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK, 320 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), 321 HID_BATTERY_QUIRK_IGNORE }, 322 {} 323 }; 324 325 static unsigned find_battery_quirk(struct hid_device *hdev) 326 { 327 unsigned quirks = 0; 328 const struct hid_device_id *match; 329 330 match = hid_match_id(hdev, hid_battery_quirks); 331 if (match != NULL) 332 quirks = match->driver_data; 333 334 return quirks; 335 } 336 337 static int hidinput_scale_battery_capacity(struct hid_device *dev, 338 int value) 339 { 340 if (dev->battery_min < dev->battery_max && 341 value >= dev->battery_min && value <= dev->battery_max) 342 value = ((value - dev->battery_min) * 100) / 343 (dev->battery_max - dev->battery_min); 344 345 return value; 346 } 347 348 static int hidinput_query_battery_capacity(struct hid_device *dev) 349 { 350 u8 *buf; 351 int ret; 352 353 buf = kmalloc(2, GFP_KERNEL); 354 if (!buf) 355 return -ENOMEM; 356 357 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2, 358 dev->battery_report_type, HID_REQ_GET_REPORT); 359 if (ret != 2) { 360 kfree(buf); 361 return -ENODATA; 362 } 363 364 ret = hidinput_scale_battery_capacity(dev, buf[1]); 365 kfree(buf); 366 return ret; 367 } 368 369 static int hidinput_get_battery_property(struct power_supply *psy, 370 enum power_supply_property prop, 371 union power_supply_propval *val) 372 { 373 struct hid_device *dev = power_supply_get_drvdata(psy); 374 int value; 375 int ret = 0; 376 377 switch (prop) { 378 case POWER_SUPPLY_PROP_PRESENT: 379 case POWER_SUPPLY_PROP_ONLINE: 380 val->intval = 1; 381 break; 382 383 case POWER_SUPPLY_PROP_CAPACITY: 384 if (dev->battery_status != HID_BATTERY_REPORTED && 385 !dev->battery_avoid_query) { 386 value = hidinput_query_battery_capacity(dev); 387 if (value < 0) 388 return value; 389 } else { 390 value = dev->battery_capacity; 391 } 392 393 val->intval = value; 394 break; 395 396 case POWER_SUPPLY_PROP_MODEL_NAME: 397 val->strval = dev->name; 398 break; 399 400 case POWER_SUPPLY_PROP_STATUS: 401 if (dev->battery_status != HID_BATTERY_REPORTED && 402 !dev->battery_avoid_query) { 403 value = hidinput_query_battery_capacity(dev); 404 if (value < 0) 405 return value; 406 407 dev->battery_capacity = value; 408 dev->battery_status = HID_BATTERY_QUERIED; 409 } 410 411 if (dev->battery_status == HID_BATTERY_UNKNOWN) 412 val->intval = POWER_SUPPLY_STATUS_UNKNOWN; 413 else if (dev->battery_capacity == 100) 414 val->intval = POWER_SUPPLY_STATUS_FULL; 415 else 416 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 417 break; 418 419 case POWER_SUPPLY_PROP_SCOPE: 420 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 421 break; 422 423 default: 424 ret = -EINVAL; 425 break; 426 } 427 428 return ret; 429 } 430 431 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field) 432 { 433 struct power_supply_desc *psy_desc; 434 struct power_supply_config psy_cfg = { .drv_data = dev, }; 435 unsigned quirks; 436 s32 min, max; 437 int error; 438 439 if (dev->battery) 440 return 0; /* already initialized? */ 441 442 quirks = find_battery_quirk(dev); 443 444 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 445 dev->bus, dev->vendor, dev->product, dev->version, quirks); 446 447 if (quirks & HID_BATTERY_QUIRK_IGNORE) 448 return 0; 449 450 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); 451 if (!psy_desc) 452 return -ENOMEM; 453 454 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", 455 strlen(dev->uniq) ? 456 dev->uniq : dev_name(&dev->dev)); 457 if (!psy_desc->name) { 458 error = -ENOMEM; 459 goto err_free_mem; 460 } 461 462 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 463 psy_desc->properties = hidinput_battery_props; 464 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); 465 psy_desc->use_for_apm = 0; 466 psy_desc->get_property = hidinput_get_battery_property; 467 468 min = field->logical_minimum; 469 max = field->logical_maximum; 470 471 if (quirks & HID_BATTERY_QUIRK_PERCENT) { 472 min = 0; 473 max = 100; 474 } 475 476 if (quirks & HID_BATTERY_QUIRK_FEATURE) 477 report_type = HID_FEATURE_REPORT; 478 479 dev->battery_min = min; 480 dev->battery_max = max; 481 dev->battery_report_type = report_type; 482 dev->battery_report_id = field->report->id; 483 484 /* 485 * Stylus is normally not connected to the device and thus we 486 * can't query the device and get meaningful battery strength. 487 * We have to wait for the device to report it on its own. 488 */ 489 dev->battery_avoid_query = report_type == HID_INPUT_REPORT && 490 field->physical == HID_DG_STYLUS; 491 492 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); 493 if (IS_ERR(dev->battery)) { 494 error = PTR_ERR(dev->battery); 495 hid_warn(dev, "can't register power supply: %d\n", error); 496 goto err_free_name; 497 } 498 499 power_supply_powers(dev->battery, &dev->dev); 500 return 0; 501 502 err_free_name: 503 kfree(psy_desc->name); 504 err_free_mem: 505 kfree(psy_desc); 506 dev->battery = NULL; 507 return error; 508 } 509 510 static void hidinput_cleanup_battery(struct hid_device *dev) 511 { 512 const struct power_supply_desc *psy_desc; 513 514 if (!dev->battery) 515 return; 516 517 psy_desc = dev->battery->desc; 518 power_supply_unregister(dev->battery); 519 kfree(psy_desc->name); 520 kfree(psy_desc); 521 dev->battery = NULL; 522 } 523 524 static void hidinput_update_battery(struct hid_device *dev, int value) 525 { 526 int capacity; 527 528 if (!dev->battery) 529 return; 530 531 if (value == 0 || value < dev->battery_min || value > dev->battery_max) 532 return; 533 534 capacity = hidinput_scale_battery_capacity(dev, value); 535 536 if (dev->battery_status != HID_BATTERY_REPORTED || 537 capacity != dev->battery_capacity) { 538 dev->battery_capacity = capacity; 539 dev->battery_status = HID_BATTERY_REPORTED; 540 power_supply_changed(dev->battery); 541 } 542 } 543 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 544 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 545 struct hid_field *field) 546 { 547 return 0; 548 } 549 550 static void hidinput_cleanup_battery(struct hid_device *dev) 551 { 552 } 553 554 static void hidinput_update_battery(struct hid_device *dev, int value) 555 { 556 } 557 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 558 559 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 560 struct hid_usage *usage) 561 { 562 struct input_dev *input = hidinput->input; 563 struct hid_device *device = input_get_drvdata(input); 564 int max = 0, code; 565 unsigned long *bit = NULL; 566 567 field->hidinput = hidinput; 568 569 if (field->flags & HID_MAIN_ITEM_CONSTANT) 570 goto ignore; 571 572 /* Ignore if report count is out of bounds. */ 573 if (field->report_count < 1) 574 goto ignore; 575 576 /* only LED usages are supported in output fields */ 577 if (field->report_type == HID_OUTPUT_REPORT && 578 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 579 goto ignore; 580 } 581 582 if (device->driver->input_mapping) { 583 int ret = device->driver->input_mapping(device, hidinput, field, 584 usage, &bit, &max); 585 if (ret > 0) 586 goto mapped; 587 if (ret < 0) 588 goto ignore; 589 } 590 591 switch (usage->hid & HID_USAGE_PAGE) { 592 case HID_UP_UNDEFINED: 593 goto ignore; 594 595 case HID_UP_KEYBOARD: 596 set_bit(EV_REP, input->evbit); 597 598 if ((usage->hid & HID_USAGE) < 256) { 599 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 600 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 601 } else 602 map_key(KEY_UNKNOWN); 603 604 break; 605 606 case HID_UP_BUTTON: 607 code = ((usage->hid - 1) & HID_USAGE); 608 609 switch (field->application) { 610 case HID_GD_MOUSE: 611 case HID_GD_POINTER: code += BTN_MOUSE; break; 612 case HID_GD_JOYSTICK: 613 if (code <= 0xf) 614 code += BTN_JOYSTICK; 615 else 616 code += BTN_TRIGGER_HAPPY - 0x10; 617 break; 618 case HID_GD_GAMEPAD: 619 if (code <= 0xf) 620 code += BTN_GAMEPAD; 621 else 622 code += BTN_TRIGGER_HAPPY - 0x10; 623 break; 624 default: 625 switch (field->physical) { 626 case HID_GD_MOUSE: 627 case HID_GD_POINTER: code += BTN_MOUSE; break; 628 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 629 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 630 default: code += BTN_MISC; 631 } 632 } 633 634 map_key(code); 635 break; 636 637 case HID_UP_SIMULATION: 638 switch (usage->hid & 0xffff) { 639 case 0xba: map_abs(ABS_RUDDER); break; 640 case 0xbb: map_abs(ABS_THROTTLE); break; 641 case 0xc4: map_abs(ABS_GAS); break; 642 case 0xc5: map_abs(ABS_BRAKE); break; 643 case 0xc8: map_abs(ABS_WHEEL); break; 644 default: goto ignore; 645 } 646 break; 647 648 case HID_UP_GENDESK: 649 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 650 switch (usage->hid & 0xf) { 651 case 0x1: map_key_clear(KEY_POWER); break; 652 case 0x2: map_key_clear(KEY_SLEEP); break; 653 case 0x3: map_key_clear(KEY_WAKEUP); break; 654 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 655 case 0x5: map_key_clear(KEY_MENU); break; 656 case 0x6: map_key_clear(KEY_PROG1); break; 657 case 0x7: map_key_clear(KEY_HELP); break; 658 case 0x8: map_key_clear(KEY_EXIT); break; 659 case 0x9: map_key_clear(KEY_SELECT); break; 660 case 0xa: map_key_clear(KEY_RIGHT); break; 661 case 0xb: map_key_clear(KEY_LEFT); break; 662 case 0xc: map_key_clear(KEY_UP); break; 663 case 0xd: map_key_clear(KEY_DOWN); break; 664 case 0xe: map_key_clear(KEY_POWER2); break; 665 case 0xf: map_key_clear(KEY_RESTART); break; 666 default: goto unknown; 667 } 668 break; 669 } 670 671 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */ 672 switch (usage->hid & 0xf) { 673 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break; 674 default: goto ignore; 675 } 676 break; 677 } 678 679 /* 680 * Some lazy vendors declare 255 usages for System Control, 681 * leading to the creation of ABS_X|Y axis and too many others. 682 * It wouldn't be a problem if joydev doesn't consider the 683 * device as a joystick then. 684 */ 685 if (field->application == HID_GD_SYSTEM_CONTROL) 686 goto ignore; 687 688 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 689 switch (usage->hid) { 690 case HID_GD_UP: usage->hat_dir = 1; break; 691 case HID_GD_DOWN: usage->hat_dir = 5; break; 692 case HID_GD_RIGHT: usage->hat_dir = 3; break; 693 case HID_GD_LEFT: usage->hat_dir = 7; break; 694 default: goto unknown; 695 } 696 if (field->dpad) { 697 map_abs(field->dpad); 698 goto ignore; 699 } 700 map_abs(ABS_HAT0X); 701 break; 702 } 703 704 switch (usage->hid) { 705 /* These usage IDs map directly to the usage codes. */ 706 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 707 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 708 if (field->flags & HID_MAIN_ITEM_RELATIVE) 709 map_rel(usage->hid & 0xf); 710 else 711 map_abs_clear(usage->hid & 0xf); 712 break; 713 714 case HID_GD_WHEEL: 715 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 716 set_bit(REL_WHEEL, input->relbit); 717 map_rel(REL_WHEEL_HI_RES); 718 } else { 719 map_abs(usage->hid & 0xf); 720 } 721 break; 722 case HID_GD_SLIDER: case HID_GD_DIAL: 723 if (field->flags & HID_MAIN_ITEM_RELATIVE) 724 map_rel(usage->hid & 0xf); 725 else 726 map_abs(usage->hid & 0xf); 727 break; 728 729 case HID_GD_HATSWITCH: 730 usage->hat_min = field->logical_minimum; 731 usage->hat_max = field->logical_maximum; 732 map_abs(ABS_HAT0X); 733 break; 734 735 case HID_GD_START: map_key_clear(BTN_START); break; 736 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 737 738 case HID_GD_RFKILL_BTN: 739 /* MS wireless radio ctl extension, also check CA */ 740 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 741 map_key_clear(KEY_RFKILL); 742 /* We need to simulate the btn release */ 743 field->flags |= HID_MAIN_ITEM_RELATIVE; 744 break; 745 } 746 747 default: goto unknown; 748 } 749 750 break; 751 752 case HID_UP_LED: 753 switch (usage->hid & 0xffff) { /* HID-Value: */ 754 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 755 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 756 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 757 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 758 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 759 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 760 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 761 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 762 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 763 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 764 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 765 766 default: goto ignore; 767 } 768 break; 769 770 case HID_UP_DIGITIZER: 771 if ((field->application & 0xff) == 0x01) /* Digitizer */ 772 __set_bit(INPUT_PROP_POINTER, input->propbit); 773 else if ((field->application & 0xff) == 0x02) /* Pen */ 774 __set_bit(INPUT_PROP_DIRECT, input->propbit); 775 776 switch (usage->hid & 0xff) { 777 case 0x00: /* Undefined */ 778 goto ignore; 779 780 case 0x30: /* TipPressure */ 781 if (!test_bit(BTN_TOUCH, input->keybit)) { 782 device->quirks |= HID_QUIRK_NOTOUCH; 783 set_bit(EV_KEY, input->evbit); 784 set_bit(BTN_TOUCH, input->keybit); 785 } 786 map_abs_clear(ABS_PRESSURE); 787 break; 788 789 case 0x32: /* InRange */ 790 switch (field->physical & 0xff) { 791 case 0x21: map_key(BTN_TOOL_MOUSE); break; 792 case 0x22: map_key(BTN_TOOL_FINGER); break; 793 default: map_key(BTN_TOOL_PEN); break; 794 } 795 break; 796 797 case 0x3b: /* Battery Strength */ 798 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 799 usage->type = EV_PWR; 800 goto ignore; 801 802 case 0x3c: /* Invert */ 803 map_key_clear(BTN_TOOL_RUBBER); 804 break; 805 806 case 0x3d: /* X Tilt */ 807 map_abs_clear(ABS_TILT_X); 808 break; 809 810 case 0x3e: /* Y Tilt */ 811 map_abs_clear(ABS_TILT_Y); 812 break; 813 814 case 0x33: /* Touch */ 815 case 0x42: /* TipSwitch */ 816 case 0x43: /* TipSwitch2 */ 817 device->quirks &= ~HID_QUIRK_NOTOUCH; 818 map_key_clear(BTN_TOUCH); 819 break; 820 821 case 0x44: /* BarrelSwitch */ 822 map_key_clear(BTN_STYLUS); 823 break; 824 825 case 0x45: /* ERASER */ 826 /* 827 * This event is reported when eraser tip touches the surface. 828 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when 829 * tool gets in proximity. 830 */ 831 map_key_clear(BTN_TOUCH); 832 break; 833 834 case 0x46: /* TabletPick */ 835 case 0x5a: /* SecondaryBarrelSwitch */ 836 map_key_clear(BTN_STYLUS2); 837 break; 838 839 case 0x5b: /* TransducerSerialNumber */ 840 usage->type = EV_MSC; 841 usage->code = MSC_SERIAL; 842 bit = input->mscbit; 843 max = MSC_MAX; 844 break; 845 846 default: goto unknown; 847 } 848 break; 849 850 case HID_UP_TELEPHONY: 851 switch (usage->hid & HID_USAGE) { 852 case 0x2f: map_key_clear(KEY_MICMUTE); break; 853 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 854 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 855 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 856 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 857 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 858 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 859 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 860 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 861 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 862 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 863 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 864 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 865 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 866 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 867 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 868 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 869 default: goto ignore; 870 } 871 break; 872 873 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 874 switch (usage->hid & HID_USAGE) { 875 case 0x000: goto ignore; 876 case 0x030: map_key_clear(KEY_POWER); break; 877 case 0x031: map_key_clear(KEY_RESTART); break; 878 case 0x032: map_key_clear(KEY_SLEEP); break; 879 case 0x034: map_key_clear(KEY_SLEEP); break; 880 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 881 case 0x036: map_key_clear(BTN_MISC); break; 882 883 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 884 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 885 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 886 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 887 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 888 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 889 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 890 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 891 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 892 893 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 894 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 895 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 896 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 897 case 0x069: map_key_clear(KEY_RED); break; 898 case 0x06a: map_key_clear(KEY_GREEN); break; 899 case 0x06b: map_key_clear(KEY_BLUE); break; 900 case 0x06c: map_key_clear(KEY_YELLOW); break; 901 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break; 902 903 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 904 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 905 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 906 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 907 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 908 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 909 910 case 0x079: map_key_clear(KEY_KBDILLUMUP); break; 911 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break; 912 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break; 913 914 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 915 case 0x083: map_key_clear(KEY_LAST); break; 916 case 0x084: map_key_clear(KEY_ENTER); break; 917 case 0x088: map_key_clear(KEY_PC); break; 918 case 0x089: map_key_clear(KEY_TV); break; 919 case 0x08a: map_key_clear(KEY_WWW); break; 920 case 0x08b: map_key_clear(KEY_DVD); break; 921 case 0x08c: map_key_clear(KEY_PHONE); break; 922 case 0x08d: map_key_clear(KEY_PROGRAM); break; 923 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 924 case 0x08f: map_key_clear(KEY_GAMES); break; 925 case 0x090: map_key_clear(KEY_MEMO); break; 926 case 0x091: map_key_clear(KEY_CD); break; 927 case 0x092: map_key_clear(KEY_VCR); break; 928 case 0x093: map_key_clear(KEY_TUNER); break; 929 case 0x094: map_key_clear(KEY_EXIT); break; 930 case 0x095: map_key_clear(KEY_HELP); break; 931 case 0x096: map_key_clear(KEY_TAPE); break; 932 case 0x097: map_key_clear(KEY_TV2); break; 933 case 0x098: map_key_clear(KEY_SAT); break; 934 case 0x09a: map_key_clear(KEY_PVR); break; 935 936 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 937 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 938 case 0x0a0: map_key_clear(KEY_VCR2); break; 939 940 case 0x0b0: map_key_clear(KEY_PLAY); break; 941 case 0x0b1: map_key_clear(KEY_PAUSE); break; 942 case 0x0b2: map_key_clear(KEY_RECORD); break; 943 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 944 case 0x0b4: map_key_clear(KEY_REWIND); break; 945 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 946 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 947 case 0x0b7: map_key_clear(KEY_STOPCD); break; 948 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 949 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 950 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 951 case 0x0bf: map_key_clear(KEY_SLOW); break; 952 953 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 954 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 955 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 956 case 0x0e2: map_key_clear(KEY_MUTE); break; 957 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 958 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 959 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 960 case 0x0f5: map_key_clear(KEY_SLOW); break; 961 962 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 963 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 964 case 0x183: map_key_clear(KEY_CONFIG); break; 965 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 966 case 0x185: map_key_clear(KEY_EDITOR); break; 967 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 968 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 969 case 0x188: map_key_clear(KEY_PRESENTATION); break; 970 case 0x189: map_key_clear(KEY_DATABASE); break; 971 case 0x18a: map_key_clear(KEY_MAIL); break; 972 case 0x18b: map_key_clear(KEY_NEWS); break; 973 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 974 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 975 case 0x18e: map_key_clear(KEY_CALENDAR); break; 976 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 977 case 0x190: map_key_clear(KEY_JOURNAL); break; 978 case 0x191: map_key_clear(KEY_FINANCE); break; 979 case 0x192: map_key_clear(KEY_CALC); break; 980 case 0x193: map_key_clear(KEY_PLAYER); break; 981 case 0x194: map_key_clear(KEY_FILE); break; 982 case 0x196: map_key_clear(KEY_WWW); break; 983 case 0x199: map_key_clear(KEY_CHAT); break; 984 case 0x19c: map_key_clear(KEY_LOGOFF); break; 985 case 0x19e: map_key_clear(KEY_COFFEE); break; 986 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 987 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 988 case 0x1a3: map_key_clear(KEY_NEXT); break; 989 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 990 case 0x1a6: map_key_clear(KEY_HELP); break; 991 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 992 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 993 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 994 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 995 case 0x1b4: map_key_clear(KEY_FILE); break; 996 case 0x1b6: map_key_clear(KEY_IMAGES); break; 997 case 0x1b7: map_key_clear(KEY_AUDIO); break; 998 case 0x1b8: map_key_clear(KEY_VIDEO); break; 999 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1000 case 0x1bd: map_key_clear(KEY_INFO); break; 1001 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1002 case 0x201: map_key_clear(KEY_NEW); break; 1003 case 0x202: map_key_clear(KEY_OPEN); break; 1004 case 0x203: map_key_clear(KEY_CLOSE); break; 1005 case 0x204: map_key_clear(KEY_EXIT); break; 1006 case 0x207: map_key_clear(KEY_SAVE); break; 1007 case 0x208: map_key_clear(KEY_PRINT); break; 1008 case 0x209: map_key_clear(KEY_PROPS); break; 1009 case 0x21a: map_key_clear(KEY_UNDO); break; 1010 case 0x21b: map_key_clear(KEY_COPY); break; 1011 case 0x21c: map_key_clear(KEY_CUT); break; 1012 case 0x21d: map_key_clear(KEY_PASTE); break; 1013 case 0x21f: map_key_clear(KEY_FIND); break; 1014 case 0x221: map_key_clear(KEY_SEARCH); break; 1015 case 0x222: map_key_clear(KEY_GOTO); break; 1016 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1017 case 0x224: map_key_clear(KEY_BACK); break; 1018 case 0x225: map_key_clear(KEY_FORWARD); break; 1019 case 0x226: map_key_clear(KEY_STOP); break; 1020 case 0x227: map_key_clear(KEY_REFRESH); break; 1021 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1022 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1023 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1024 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1025 case 0x232: map_key_clear(KEY_FULL_SCREEN); break; 1026 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1027 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1028 case 0x238: /* AC Pan */ 1029 set_bit(REL_HWHEEL, input->relbit); 1030 map_rel(REL_HWHEEL_HI_RES); 1031 break; 1032 case 0x23d: map_key_clear(KEY_EDIT); break; 1033 case 0x25f: map_key_clear(KEY_CANCEL); break; 1034 case 0x269: map_key_clear(KEY_INSERT); break; 1035 case 0x26a: map_key_clear(KEY_DELETE); break; 1036 case 0x279: map_key_clear(KEY_REDO); break; 1037 1038 case 0x289: map_key_clear(KEY_REPLY); break; 1039 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1040 case 0x28c: map_key_clear(KEY_SEND); break; 1041 1042 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break; 1043 1044 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1045 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1046 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1047 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1048 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1049 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1050 1051 case 0x29f: map_key_clear(KEY_SCALE); break; 1052 1053 default: map_key_clear(KEY_UNKNOWN); 1054 } 1055 break; 1056 1057 case HID_UP_GENDEVCTRLS: 1058 switch (usage->hid) { 1059 case HID_DC_BATTERYSTRENGTH: 1060 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 1061 usage->type = EV_PWR; 1062 goto ignore; 1063 } 1064 goto unknown; 1065 1066 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1067 set_bit(EV_REP, input->evbit); 1068 switch (usage->hid & HID_USAGE) { 1069 case 0x021: map_key_clear(KEY_PRINT); break; 1070 case 0x070: map_key_clear(KEY_HP); break; 1071 case 0x071: map_key_clear(KEY_CAMERA); break; 1072 case 0x072: map_key_clear(KEY_SOUND); break; 1073 case 0x073: map_key_clear(KEY_QUESTION); break; 1074 case 0x080: map_key_clear(KEY_EMAIL); break; 1075 case 0x081: map_key_clear(KEY_CHAT); break; 1076 case 0x082: map_key_clear(KEY_SEARCH); break; 1077 case 0x083: map_key_clear(KEY_CONNECT); break; 1078 case 0x084: map_key_clear(KEY_FINANCE); break; 1079 case 0x085: map_key_clear(KEY_SPORT); break; 1080 case 0x086: map_key_clear(KEY_SHOP); break; 1081 default: goto ignore; 1082 } 1083 break; 1084 1085 case HID_UP_HPVENDOR2: 1086 set_bit(EV_REP, input->evbit); 1087 switch (usage->hid & HID_USAGE) { 1088 case 0x001: map_key_clear(KEY_MICMUTE); break; 1089 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1090 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1091 default: goto ignore; 1092 } 1093 break; 1094 1095 case HID_UP_MSVENDOR: 1096 goto ignore; 1097 1098 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1099 set_bit(EV_REP, input->evbit); 1100 goto ignore; 1101 1102 case HID_UP_LOGIVENDOR: 1103 /* intentional fallback */ 1104 case HID_UP_LOGIVENDOR2: 1105 /* intentional fallback */ 1106 case HID_UP_LOGIVENDOR3: 1107 goto ignore; 1108 1109 case HID_UP_PID: 1110 switch (usage->hid & HID_USAGE) { 1111 case 0xa4: map_key_clear(BTN_DEAD); break; 1112 default: goto ignore; 1113 } 1114 break; 1115 1116 default: 1117 unknown: 1118 if (field->report_size == 1) { 1119 if (field->report->type == HID_OUTPUT_REPORT) { 1120 map_led(LED_MISC); 1121 break; 1122 } 1123 map_key(BTN_MISC); 1124 break; 1125 } 1126 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1127 map_rel(REL_MISC); 1128 break; 1129 } 1130 map_abs(ABS_MISC); 1131 break; 1132 } 1133 1134 mapped: 1135 if (device->driver->input_mapped && device->driver->input_mapped(device, 1136 hidinput, field, usage, &bit, &max) < 0) 1137 goto ignore; 1138 1139 set_bit(usage->type, input->evbit); 1140 1141 /* 1142 * This part is *really* controversial: 1143 * - HID aims at being generic so we should do our best to export 1144 * all incoming events 1145 * - HID describes what events are, so there is no reason for ABS_X 1146 * to be mapped to ABS_Y 1147 * - HID is using *_MISC+N as a default value, but nothing prevents 1148 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1149 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1150 * processing) 1151 * 1152 * If devices still want to use this (at their own risk), they will 1153 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1154 * the default should be a reliable mapping. 1155 */ 1156 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1157 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1158 usage->code = find_next_zero_bit(bit, 1159 max + 1, 1160 usage->code); 1161 } else { 1162 device->status |= HID_STAT_DUP_DETECTED; 1163 goto ignore; 1164 } 1165 } 1166 1167 if (usage->code > max) 1168 goto ignore; 1169 1170 if (usage->type == EV_ABS) { 1171 1172 int a = field->logical_minimum; 1173 int b = field->logical_maximum; 1174 1175 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1176 a = field->logical_minimum = 0; 1177 b = field->logical_maximum = 255; 1178 } 1179 1180 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1181 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1182 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1183 1184 input_abs_set_res(input, usage->code, 1185 hidinput_calc_abs_res(field, usage->code)); 1186 1187 /* use a larger default input buffer for MT devices */ 1188 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1189 input_set_events_per_packet(input, 60); 1190 } 1191 1192 if (usage->type == EV_ABS && 1193 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1194 int i; 1195 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1196 input_set_abs_params(input, i, -1, 1, 0, 0); 1197 set_bit(i, input->absbit); 1198 } 1199 if (usage->hat_dir && !field->dpad) 1200 field->dpad = usage->code; 1201 } 1202 1203 /* for those devices which produce Consumer volume usage as relative, 1204 * we emulate pressing volumeup/volumedown appropriate number of times 1205 * in hidinput_hid_event() 1206 */ 1207 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1208 (usage->code == ABS_VOLUME)) { 1209 set_bit(KEY_VOLUMEUP, input->keybit); 1210 set_bit(KEY_VOLUMEDOWN, input->keybit); 1211 } 1212 1213 if (usage->type == EV_KEY) { 1214 set_bit(EV_MSC, input->evbit); 1215 set_bit(MSC_SCAN, input->mscbit); 1216 } 1217 1218 ignore: 1219 return; 1220 1221 } 1222 1223 static void hidinput_handle_scroll(struct hid_usage *usage, 1224 struct input_dev *input, 1225 __s32 value) 1226 { 1227 int code; 1228 int hi_res, lo_res; 1229 1230 if (value == 0) 1231 return; 1232 1233 if (usage->code == REL_WHEEL_HI_RES) 1234 code = REL_WHEEL; 1235 else 1236 code = REL_HWHEEL; 1237 1238 /* 1239 * Windows reports one wheel click as value 120. Where a high-res 1240 * scroll wheel is present, a fraction of 120 is reported instead. 1241 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1242 * adhere to the 120 expectation. 1243 */ 1244 hi_res = value * 120/usage->resolution_multiplier; 1245 1246 usage->wheel_accumulated += hi_res; 1247 lo_res = usage->wheel_accumulated/120; 1248 if (lo_res) 1249 usage->wheel_accumulated -= lo_res * 120; 1250 1251 input_event(input, EV_REL, code, lo_res); 1252 input_event(input, EV_REL, usage->code, hi_res); 1253 } 1254 1255 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1256 { 1257 struct input_dev *input; 1258 unsigned *quirks = &hid->quirks; 1259 1260 if (!usage->type) 1261 return; 1262 1263 if (usage->type == EV_PWR) { 1264 hidinput_update_battery(hid, value); 1265 return; 1266 } 1267 1268 if (!field->hidinput) 1269 return; 1270 1271 input = field->hidinput->input; 1272 1273 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1274 int hat_dir = usage->hat_dir; 1275 if (!hat_dir) 1276 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1277 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1278 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1279 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1280 return; 1281 } 1282 1283 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 1284 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1285 return; 1286 } 1287 1288 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 1289 if (value) { 1290 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1291 return; 1292 } 1293 input_event(input, usage->type, usage->code, 0); 1294 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1295 return; 1296 } 1297 1298 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 1299 int a = field->logical_minimum; 1300 int b = field->logical_maximum; 1301 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1302 } 1303 1304 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1305 dbg_hid("Maximum Effects - %d\n",value); 1306 return; 1307 } 1308 1309 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1310 dbg_hid("PID Pool Report\n"); 1311 return; 1312 } 1313 1314 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1315 return; 1316 1317 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1318 usage->code == REL_HWHEEL_HI_RES)) { 1319 hidinput_handle_scroll(usage, input, value); 1320 return; 1321 } 1322 1323 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1324 (usage->code == ABS_VOLUME)) { 1325 int count = abs(value); 1326 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1327 int i; 1328 1329 for (i = 0; i < count; i++) { 1330 input_event(input, EV_KEY, direction, 1); 1331 input_sync(input); 1332 input_event(input, EV_KEY, direction, 0); 1333 input_sync(input); 1334 } 1335 return; 1336 } 1337 1338 /* 1339 * Ignore out-of-range values as per HID specification, 1340 * section 5.10 and 6.2.25, when NULL state bit is present. 1341 * When it's not, clamp the value to match Microsoft's input 1342 * driver as mentioned in "Required HID usages for digitizers": 1343 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1344 * 1345 * The logical_minimum < logical_maximum check is done so that we 1346 * don't unintentionally discard values sent by devices which 1347 * don't specify logical min and max. 1348 */ 1349 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1350 (field->logical_minimum < field->logical_maximum)) { 1351 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1352 (value < field->logical_minimum || 1353 value > field->logical_maximum)) { 1354 dbg_hid("Ignoring out-of-range value %x\n", value); 1355 return; 1356 } 1357 value = clamp(value, 1358 field->logical_minimum, 1359 field->logical_maximum); 1360 } 1361 1362 /* 1363 * Ignore reports for absolute data if the data didn't change. This is 1364 * not only an optimization but also fixes 'dead' key reports. Some 1365 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1366 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1367 * can only have one of them physically available. The 'dead' keys 1368 * report constant 0. As all map to the same keycode, they'd confuse 1369 * the input layer. If we filter the 'dead' keys on the HID level, we 1370 * skip the keycode translation and only forward real events. 1371 */ 1372 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1373 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1374 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1375 usage->usage_index < field->maxusage && 1376 value == field->value[usage->usage_index]) 1377 return; 1378 1379 /* report the usage code as scancode if the key status has changed */ 1380 if (usage->type == EV_KEY && 1381 (!test_bit(usage->code, input->key)) == value) 1382 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1383 1384 input_event(input, usage->type, usage->code, value); 1385 1386 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1387 usage->type == EV_KEY && value) { 1388 input_sync(input); 1389 input_event(input, usage->type, usage->code, 0); 1390 } 1391 } 1392 1393 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1394 { 1395 struct hid_input *hidinput; 1396 1397 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1398 return; 1399 1400 list_for_each_entry(hidinput, &hid->inputs, list) 1401 input_sync(hidinput->input); 1402 } 1403 EXPORT_SYMBOL_GPL(hidinput_report_event); 1404 1405 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1406 { 1407 struct hid_report *report; 1408 int i, j; 1409 1410 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1411 for (i = 0; i < report->maxfield; i++) { 1412 *field = report->field[i]; 1413 for (j = 0; j < (*field)->maxusage; j++) 1414 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1415 return j; 1416 } 1417 } 1418 return -1; 1419 } 1420 EXPORT_SYMBOL_GPL(hidinput_find_field); 1421 1422 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1423 { 1424 struct hid_report *report; 1425 struct hid_field *field; 1426 int i, j; 1427 1428 list_for_each_entry(report, 1429 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1430 list) { 1431 for (i = 0; i < report->maxfield; i++) { 1432 field = report->field[i]; 1433 for (j = 0; j < field->maxusage; j++) 1434 if (field->usage[j].type == EV_LED) 1435 return field; 1436 } 1437 } 1438 return NULL; 1439 } 1440 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1441 1442 unsigned int hidinput_count_leds(struct hid_device *hid) 1443 { 1444 struct hid_report *report; 1445 struct hid_field *field; 1446 int i, j; 1447 unsigned int count = 0; 1448 1449 list_for_each_entry(report, 1450 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1451 list) { 1452 for (i = 0; i < report->maxfield; i++) { 1453 field = report->field[i]; 1454 for (j = 0; j < field->maxusage; j++) 1455 if (field->usage[j].type == EV_LED && 1456 field->value[j]) 1457 count += 1; 1458 } 1459 } 1460 return count; 1461 } 1462 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1463 1464 static void hidinput_led_worker(struct work_struct *work) 1465 { 1466 struct hid_device *hid = container_of(work, struct hid_device, 1467 led_work); 1468 struct hid_field *field; 1469 struct hid_report *report; 1470 int ret; 1471 u32 len; 1472 __u8 *buf; 1473 1474 field = hidinput_get_led_field(hid); 1475 if (!field) 1476 return; 1477 1478 /* 1479 * field->report is accessed unlocked regarding HID core. So there might 1480 * be another incoming SET-LED request from user-space, which changes 1481 * the LED state while we assemble our outgoing buffer. However, this 1482 * doesn't matter as hid_output_report() correctly converts it into a 1483 * boolean value no matter what information is currently set on the LED 1484 * field (even garbage). So the remote device will always get a valid 1485 * request. 1486 * And in case we send a wrong value, a next led worker is spawned 1487 * for every SET-LED request so the following worker will send the 1488 * correct value, guaranteed! 1489 */ 1490 1491 report = field->report; 1492 1493 /* use custom SET_REPORT request if possible (asynchronous) */ 1494 if (hid->ll_driver->request) 1495 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1496 1497 /* fall back to generic raw-output-report */ 1498 len = hid_report_len(report); 1499 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1500 if (!buf) 1501 return; 1502 1503 hid_output_report(report, buf); 1504 /* synchronous output report */ 1505 ret = hid_hw_output_report(hid, buf, len); 1506 if (ret == -ENOSYS) 1507 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1508 HID_REQ_SET_REPORT); 1509 kfree(buf); 1510 } 1511 1512 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1513 unsigned int code, int value) 1514 { 1515 struct hid_device *hid = input_get_drvdata(dev); 1516 struct hid_field *field; 1517 int offset; 1518 1519 if (type == EV_FF) 1520 return input_ff_event(dev, type, code, value); 1521 1522 if (type != EV_LED) 1523 return -1; 1524 1525 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1526 hid_warn(dev, "event field not found\n"); 1527 return -1; 1528 } 1529 1530 hid_set_field(field, offset, value); 1531 1532 schedule_work(&hid->led_work); 1533 return 0; 1534 } 1535 1536 static int hidinput_open(struct input_dev *dev) 1537 { 1538 struct hid_device *hid = input_get_drvdata(dev); 1539 1540 return hid_hw_open(hid); 1541 } 1542 1543 static void hidinput_close(struct input_dev *dev) 1544 { 1545 struct hid_device *hid = input_get_drvdata(dev); 1546 1547 hid_hw_close(hid); 1548 } 1549 1550 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1551 struct hid_report *report, bool use_logical_max) 1552 { 1553 struct hid_usage *usage; 1554 bool update_needed = false; 1555 int i, j; 1556 1557 if (report->maxfield == 0) 1558 return false; 1559 1560 /* 1561 * If we have more than one feature within this report we 1562 * need to fill in the bits from the others before we can 1563 * overwrite the ones for the Resolution Multiplier. 1564 */ 1565 if (report->maxfield > 1) { 1566 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1567 hid_hw_wait(hid); 1568 } 1569 1570 for (i = 0; i < report->maxfield; i++) { 1571 __s32 value = use_logical_max ? 1572 report->field[i]->logical_maximum : 1573 report->field[i]->logical_minimum; 1574 1575 /* There is no good reason for a Resolution 1576 * Multiplier to have a count other than 1. 1577 * Ignore that case. 1578 */ 1579 if (report->field[i]->report_count != 1) 1580 continue; 1581 1582 for (j = 0; j < report->field[i]->maxusage; j++) { 1583 usage = &report->field[i]->usage[j]; 1584 1585 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1586 continue; 1587 1588 report->field[i]->value[j] = value; 1589 update_needed = true; 1590 } 1591 } 1592 1593 return update_needed; 1594 } 1595 1596 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1597 { 1598 struct hid_report_enum *rep_enum; 1599 struct hid_report *rep; 1600 int ret; 1601 1602 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1603 list_for_each_entry(rep, &rep_enum->report_list, list) { 1604 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1605 rep, true); 1606 1607 if (update_needed) { 1608 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1609 if (ret) { 1610 __hidinput_change_resolution_multipliers(hid, 1611 rep, false); 1612 return; 1613 } 1614 } 1615 } 1616 1617 /* refresh our structs */ 1618 hid_setup_resolution_multiplier(hid); 1619 } 1620 1621 static void report_features(struct hid_device *hid) 1622 { 1623 struct hid_driver *drv = hid->driver; 1624 struct hid_report_enum *rep_enum; 1625 struct hid_report *rep; 1626 struct hid_usage *usage; 1627 int i, j; 1628 1629 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1630 list_for_each_entry(rep, &rep_enum->report_list, list) 1631 for (i = 0; i < rep->maxfield; i++) { 1632 /* Ignore if report count is out of bounds. */ 1633 if (rep->field[i]->report_count < 1) 1634 continue; 1635 1636 for (j = 0; j < rep->field[i]->maxusage; j++) { 1637 usage = &rep->field[i]->usage[j]; 1638 1639 /* Verify if Battery Strength feature is available */ 1640 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1641 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1642 rep->field[i]); 1643 1644 if (drv->feature_mapping) 1645 drv->feature_mapping(hid, rep->field[i], usage); 1646 } 1647 } 1648 } 1649 1650 static struct hid_input *hidinput_allocate(struct hid_device *hid, 1651 unsigned int application) 1652 { 1653 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1654 struct input_dev *input_dev = input_allocate_device(); 1655 const char *suffix = NULL; 1656 size_t suffix_len, name_len; 1657 1658 if (!hidinput || !input_dev) 1659 goto fail; 1660 1661 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1662 hid->maxapplication > 1) { 1663 switch (application) { 1664 case HID_GD_KEYBOARD: 1665 suffix = "Keyboard"; 1666 break; 1667 case HID_GD_KEYPAD: 1668 suffix = "Keypad"; 1669 break; 1670 case HID_GD_MOUSE: 1671 suffix = "Mouse"; 1672 break; 1673 case HID_DG_STYLUS: 1674 suffix = "Pen"; 1675 break; 1676 case HID_DG_TOUCHSCREEN: 1677 suffix = "Touchscreen"; 1678 break; 1679 case HID_DG_TOUCHPAD: 1680 suffix = "Touchpad"; 1681 break; 1682 case HID_GD_SYSTEM_CONTROL: 1683 suffix = "System Control"; 1684 break; 1685 case HID_CP_CONSUMER_CONTROL: 1686 suffix = "Consumer Control"; 1687 break; 1688 case HID_GD_WIRELESS_RADIO_CTLS: 1689 suffix = "Wireless Radio Control"; 1690 break; 1691 case HID_GD_SYSTEM_MULTIAXIS: 1692 suffix = "System Multi Axis"; 1693 break; 1694 default: 1695 break; 1696 } 1697 } 1698 1699 if (suffix) { 1700 name_len = strlen(hid->name); 1701 suffix_len = strlen(suffix); 1702 if ((name_len < suffix_len) || 1703 strcmp(hid->name + name_len - suffix_len, suffix)) { 1704 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1705 hid->name, suffix); 1706 if (!hidinput->name) 1707 goto fail; 1708 } 1709 } 1710 1711 input_set_drvdata(input_dev, hid); 1712 input_dev->event = hidinput_input_event; 1713 input_dev->open = hidinput_open; 1714 input_dev->close = hidinput_close; 1715 input_dev->setkeycode = hidinput_setkeycode; 1716 input_dev->getkeycode = hidinput_getkeycode; 1717 1718 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1719 input_dev->phys = hid->phys; 1720 input_dev->uniq = hid->uniq; 1721 input_dev->id.bustype = hid->bus; 1722 input_dev->id.vendor = hid->vendor; 1723 input_dev->id.product = hid->product; 1724 input_dev->id.version = hid->version; 1725 input_dev->dev.parent = &hid->dev; 1726 1727 hidinput->input = input_dev; 1728 hidinput->application = application; 1729 list_add_tail(&hidinput->list, &hid->inputs); 1730 1731 INIT_LIST_HEAD(&hidinput->reports); 1732 1733 return hidinput; 1734 1735 fail: 1736 kfree(hidinput); 1737 input_free_device(input_dev); 1738 hid_err(hid, "Out of memory during hid input probe\n"); 1739 return NULL; 1740 } 1741 1742 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1743 { 1744 int i; 1745 unsigned long r = 0; 1746 1747 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1748 r |= hidinput->input->evbit[i]; 1749 1750 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1751 r |= hidinput->input->keybit[i]; 1752 1753 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1754 r |= hidinput->input->relbit[i]; 1755 1756 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1757 r |= hidinput->input->absbit[i]; 1758 1759 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1760 r |= hidinput->input->mscbit[i]; 1761 1762 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1763 r |= hidinput->input->ledbit[i]; 1764 1765 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1766 r |= hidinput->input->sndbit[i]; 1767 1768 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1769 r |= hidinput->input->ffbit[i]; 1770 1771 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1772 r |= hidinput->input->swbit[i]; 1773 1774 return !!r; 1775 } 1776 1777 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1778 struct hid_input *hidinput) 1779 { 1780 struct hid_report *report; 1781 int i, k; 1782 1783 list_del(&hidinput->list); 1784 input_free_device(hidinput->input); 1785 kfree(hidinput->name); 1786 1787 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1788 if (k == HID_OUTPUT_REPORT && 1789 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1790 continue; 1791 1792 list_for_each_entry(report, &hid->report_enum[k].report_list, 1793 list) { 1794 1795 for (i = 0; i < report->maxfield; i++) 1796 if (report->field[i]->hidinput == hidinput) 1797 report->field[i]->hidinput = NULL; 1798 } 1799 } 1800 1801 kfree(hidinput); 1802 } 1803 1804 static struct hid_input *hidinput_match(struct hid_report *report) 1805 { 1806 struct hid_device *hid = report->device; 1807 struct hid_input *hidinput; 1808 1809 list_for_each_entry(hidinput, &hid->inputs, list) { 1810 if (hidinput->report && 1811 hidinput->report->id == report->id) 1812 return hidinput; 1813 } 1814 1815 return NULL; 1816 } 1817 1818 static struct hid_input *hidinput_match_application(struct hid_report *report) 1819 { 1820 struct hid_device *hid = report->device; 1821 struct hid_input *hidinput; 1822 1823 list_for_each_entry(hidinput, &hid->inputs, list) { 1824 if (hidinput->application == report->application) 1825 return hidinput; 1826 } 1827 1828 return NULL; 1829 } 1830 1831 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1832 struct hid_report *report) 1833 { 1834 int i, j; 1835 1836 for (i = 0; i < report->maxfield; i++) 1837 for (j = 0; j < report->field[i]->maxusage; j++) 1838 hidinput_configure_usage(hidinput, report->field[i], 1839 report->field[i]->usage + j); 1840 } 1841 1842 /* 1843 * Register the input device; print a message. 1844 * Configure the input layer interface 1845 * Read all reports and initialize the absolute field values. 1846 */ 1847 1848 int hidinput_connect(struct hid_device *hid, unsigned int force) 1849 { 1850 struct hid_driver *drv = hid->driver; 1851 struct hid_report *report; 1852 struct hid_input *next, *hidinput = NULL; 1853 unsigned int application; 1854 int i, k; 1855 1856 INIT_LIST_HEAD(&hid->inputs); 1857 INIT_WORK(&hid->led_work, hidinput_led_worker); 1858 1859 hid->status &= ~HID_STAT_DUP_DETECTED; 1860 1861 if (!force) { 1862 for (i = 0; i < hid->maxcollection; i++) { 1863 struct hid_collection *col = &hid->collection[i]; 1864 if (col->type == HID_COLLECTION_APPLICATION || 1865 col->type == HID_COLLECTION_PHYSICAL) 1866 if (IS_INPUT_APPLICATION(col->usage)) 1867 break; 1868 } 1869 1870 if (i == hid->maxcollection) 1871 return -1; 1872 } 1873 1874 report_features(hid); 1875 1876 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1877 if (k == HID_OUTPUT_REPORT && 1878 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1879 continue; 1880 1881 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1882 1883 if (!report->maxfield) 1884 continue; 1885 1886 application = report->application; 1887 1888 /* 1889 * Find the previous hidinput report attached 1890 * to this report id. 1891 */ 1892 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1893 hidinput = hidinput_match(report); 1894 else if (hid->maxapplication > 1 && 1895 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1896 hidinput = hidinput_match_application(report); 1897 1898 if (!hidinput) { 1899 hidinput = hidinput_allocate(hid, application); 1900 if (!hidinput) 1901 goto out_unwind; 1902 } 1903 1904 hidinput_configure_usages(hidinput, report); 1905 1906 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1907 hidinput->report = report; 1908 1909 list_add_tail(&report->hidinput_list, 1910 &hidinput->reports); 1911 } 1912 } 1913 1914 hidinput_change_resolution_multipliers(hid); 1915 1916 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1917 if (drv->input_configured && 1918 drv->input_configured(hid, hidinput)) 1919 goto out_unwind; 1920 1921 if (!hidinput_has_been_populated(hidinput)) { 1922 /* no need to register an input device not populated */ 1923 hidinput_cleanup_hidinput(hid, hidinput); 1924 continue; 1925 } 1926 1927 if (input_register_device(hidinput->input)) 1928 goto out_unwind; 1929 hidinput->registered = true; 1930 } 1931 1932 if (list_empty(&hid->inputs)) { 1933 hid_err(hid, "No inputs registered, leaving\n"); 1934 goto out_unwind; 1935 } 1936 1937 if (hid->status & HID_STAT_DUP_DETECTED) 1938 hid_dbg(hid, 1939 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 1940 1941 return 0; 1942 1943 out_unwind: 1944 /* unwind the ones we already registered */ 1945 hidinput_disconnect(hid); 1946 1947 return -1; 1948 } 1949 EXPORT_SYMBOL_GPL(hidinput_connect); 1950 1951 void hidinput_disconnect(struct hid_device *hid) 1952 { 1953 struct hid_input *hidinput, *next; 1954 1955 hidinput_cleanup_battery(hid); 1956 1957 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1958 list_del(&hidinput->list); 1959 if (hidinput->registered) 1960 input_unregister_device(hidinput->input); 1961 else 1962 input_free_device(hidinput->input); 1963 kfree(hidinput->name); 1964 kfree(hidinput); 1965 } 1966 1967 /* led_work is spawned by input_dev callbacks, but doesn't access the 1968 * parent input_dev at all. Once all input devices are removed, we 1969 * know that led_work will never get restarted, so we can cancel it 1970 * synchronously and are safe. */ 1971 cancel_work_sync(&hid->led_work); 1972 } 1973 EXPORT_SYMBOL_GPL(hidinput_disconnect); 1974