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 && 1136 device->driver->input_mapped(device, hidinput, field, usage, 1137 &bit, &max) < 0) { 1138 /* 1139 * The driver indicated that no further generic handling 1140 * of the usage is desired. 1141 */ 1142 return; 1143 } 1144 1145 set_bit(usage->type, input->evbit); 1146 1147 /* 1148 * This part is *really* controversial: 1149 * - HID aims at being generic so we should do our best to export 1150 * all incoming events 1151 * - HID describes what events are, so there is no reason for ABS_X 1152 * to be mapped to ABS_Y 1153 * - HID is using *_MISC+N as a default value, but nothing prevents 1154 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1155 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1156 * processing) 1157 * 1158 * If devices still want to use this (at their own risk), they will 1159 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1160 * the default should be a reliable mapping. 1161 */ 1162 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1163 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1164 usage->code = find_next_zero_bit(bit, 1165 max + 1, 1166 usage->code); 1167 } else { 1168 device->status |= HID_STAT_DUP_DETECTED; 1169 goto ignore; 1170 } 1171 } 1172 1173 if (usage->code > max) 1174 goto ignore; 1175 1176 if (usage->type == EV_ABS) { 1177 1178 int a = field->logical_minimum; 1179 int b = field->logical_maximum; 1180 1181 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1182 a = field->logical_minimum = 0; 1183 b = field->logical_maximum = 255; 1184 } 1185 1186 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1187 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1188 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1189 1190 input_abs_set_res(input, usage->code, 1191 hidinput_calc_abs_res(field, usage->code)); 1192 1193 /* use a larger default input buffer for MT devices */ 1194 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1195 input_set_events_per_packet(input, 60); 1196 } 1197 1198 if (usage->type == EV_ABS && 1199 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1200 int i; 1201 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1202 input_set_abs_params(input, i, -1, 1, 0, 0); 1203 set_bit(i, input->absbit); 1204 } 1205 if (usage->hat_dir && !field->dpad) 1206 field->dpad = usage->code; 1207 } 1208 1209 /* for those devices which produce Consumer volume usage as relative, 1210 * we emulate pressing volumeup/volumedown appropriate number of times 1211 * in hidinput_hid_event() 1212 */ 1213 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1214 (usage->code == ABS_VOLUME)) { 1215 set_bit(KEY_VOLUMEUP, input->keybit); 1216 set_bit(KEY_VOLUMEDOWN, input->keybit); 1217 } 1218 1219 if (usage->type == EV_KEY) { 1220 set_bit(EV_MSC, input->evbit); 1221 set_bit(MSC_SCAN, input->mscbit); 1222 } 1223 1224 return; 1225 1226 ignore: 1227 usage->type = 0; 1228 usage->code = 0; 1229 } 1230 1231 static void hidinput_handle_scroll(struct hid_usage *usage, 1232 struct input_dev *input, 1233 __s32 value) 1234 { 1235 int code; 1236 int hi_res, lo_res; 1237 1238 if (value == 0) 1239 return; 1240 1241 if (usage->code == REL_WHEEL_HI_RES) 1242 code = REL_WHEEL; 1243 else 1244 code = REL_HWHEEL; 1245 1246 /* 1247 * Windows reports one wheel click as value 120. Where a high-res 1248 * scroll wheel is present, a fraction of 120 is reported instead. 1249 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1250 * adhere to the 120 expectation. 1251 */ 1252 hi_res = value * 120/usage->resolution_multiplier; 1253 1254 usage->wheel_accumulated += hi_res; 1255 lo_res = usage->wheel_accumulated/120; 1256 if (lo_res) 1257 usage->wheel_accumulated -= lo_res * 120; 1258 1259 input_event(input, EV_REL, code, lo_res); 1260 input_event(input, EV_REL, usage->code, hi_res); 1261 } 1262 1263 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1264 { 1265 struct input_dev *input; 1266 unsigned *quirks = &hid->quirks; 1267 1268 if (!usage->type) 1269 return; 1270 1271 if (usage->type == EV_PWR) { 1272 hidinput_update_battery(hid, value); 1273 return; 1274 } 1275 1276 if (!field->hidinput) 1277 return; 1278 1279 input = field->hidinput->input; 1280 1281 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1282 int hat_dir = usage->hat_dir; 1283 if (!hat_dir) 1284 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1285 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1286 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1287 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1288 return; 1289 } 1290 1291 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 1292 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1293 return; 1294 } 1295 1296 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 1297 if (value) { 1298 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1299 return; 1300 } 1301 input_event(input, usage->type, usage->code, 0); 1302 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1303 return; 1304 } 1305 1306 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 1307 int a = field->logical_minimum; 1308 int b = field->logical_maximum; 1309 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1310 } 1311 1312 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1313 dbg_hid("Maximum Effects - %d\n",value); 1314 return; 1315 } 1316 1317 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1318 dbg_hid("PID Pool Report\n"); 1319 return; 1320 } 1321 1322 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1323 return; 1324 1325 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1326 usage->code == REL_HWHEEL_HI_RES)) { 1327 hidinput_handle_scroll(usage, input, value); 1328 return; 1329 } 1330 1331 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1332 (usage->code == ABS_VOLUME)) { 1333 int count = abs(value); 1334 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1335 int i; 1336 1337 for (i = 0; i < count; i++) { 1338 input_event(input, EV_KEY, direction, 1); 1339 input_sync(input); 1340 input_event(input, EV_KEY, direction, 0); 1341 input_sync(input); 1342 } 1343 return; 1344 } 1345 1346 /* 1347 * Ignore out-of-range values as per HID specification, 1348 * section 5.10 and 6.2.25, when NULL state bit is present. 1349 * When it's not, clamp the value to match Microsoft's input 1350 * driver as mentioned in "Required HID usages for digitizers": 1351 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1352 * 1353 * The logical_minimum < logical_maximum check is done so that we 1354 * don't unintentionally discard values sent by devices which 1355 * don't specify logical min and max. 1356 */ 1357 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1358 (field->logical_minimum < field->logical_maximum)) { 1359 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1360 (value < field->logical_minimum || 1361 value > field->logical_maximum)) { 1362 dbg_hid("Ignoring out-of-range value %x\n", value); 1363 return; 1364 } 1365 value = clamp(value, 1366 field->logical_minimum, 1367 field->logical_maximum); 1368 } 1369 1370 /* 1371 * Ignore reports for absolute data if the data didn't change. This is 1372 * not only an optimization but also fixes 'dead' key reports. Some 1373 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1374 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1375 * can only have one of them physically available. The 'dead' keys 1376 * report constant 0. As all map to the same keycode, they'd confuse 1377 * the input layer. If we filter the 'dead' keys on the HID level, we 1378 * skip the keycode translation and only forward real events. 1379 */ 1380 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1381 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1382 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1383 usage->usage_index < field->maxusage && 1384 value == field->value[usage->usage_index]) 1385 return; 1386 1387 /* report the usage code as scancode if the key status has changed */ 1388 if (usage->type == EV_KEY && 1389 (!test_bit(usage->code, input->key)) == value) 1390 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1391 1392 input_event(input, usage->type, usage->code, value); 1393 1394 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1395 usage->type == EV_KEY && value) { 1396 input_sync(input); 1397 input_event(input, usage->type, usage->code, 0); 1398 } 1399 } 1400 1401 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1402 { 1403 struct hid_input *hidinput; 1404 1405 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1406 return; 1407 1408 list_for_each_entry(hidinput, &hid->inputs, list) 1409 input_sync(hidinput->input); 1410 } 1411 EXPORT_SYMBOL_GPL(hidinput_report_event); 1412 1413 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1414 { 1415 struct hid_report *report; 1416 int i, j; 1417 1418 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1419 for (i = 0; i < report->maxfield; i++) { 1420 *field = report->field[i]; 1421 for (j = 0; j < (*field)->maxusage; j++) 1422 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1423 return j; 1424 } 1425 } 1426 return -1; 1427 } 1428 EXPORT_SYMBOL_GPL(hidinput_find_field); 1429 1430 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1431 { 1432 struct hid_report *report; 1433 struct hid_field *field; 1434 int i, j; 1435 1436 list_for_each_entry(report, 1437 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1438 list) { 1439 for (i = 0; i < report->maxfield; i++) { 1440 field = report->field[i]; 1441 for (j = 0; j < field->maxusage; j++) 1442 if (field->usage[j].type == EV_LED) 1443 return field; 1444 } 1445 } 1446 return NULL; 1447 } 1448 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1449 1450 unsigned int hidinput_count_leds(struct hid_device *hid) 1451 { 1452 struct hid_report *report; 1453 struct hid_field *field; 1454 int i, j; 1455 unsigned int count = 0; 1456 1457 list_for_each_entry(report, 1458 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1459 list) { 1460 for (i = 0; i < report->maxfield; i++) { 1461 field = report->field[i]; 1462 for (j = 0; j < field->maxusage; j++) 1463 if (field->usage[j].type == EV_LED && 1464 field->value[j]) 1465 count += 1; 1466 } 1467 } 1468 return count; 1469 } 1470 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1471 1472 static void hidinput_led_worker(struct work_struct *work) 1473 { 1474 struct hid_device *hid = container_of(work, struct hid_device, 1475 led_work); 1476 struct hid_field *field; 1477 struct hid_report *report; 1478 int ret; 1479 u32 len; 1480 __u8 *buf; 1481 1482 field = hidinput_get_led_field(hid); 1483 if (!field) 1484 return; 1485 1486 /* 1487 * field->report is accessed unlocked regarding HID core. So there might 1488 * be another incoming SET-LED request from user-space, which changes 1489 * the LED state while we assemble our outgoing buffer. However, this 1490 * doesn't matter as hid_output_report() correctly converts it into a 1491 * boolean value no matter what information is currently set on the LED 1492 * field (even garbage). So the remote device will always get a valid 1493 * request. 1494 * And in case we send a wrong value, a next led worker is spawned 1495 * for every SET-LED request so the following worker will send the 1496 * correct value, guaranteed! 1497 */ 1498 1499 report = field->report; 1500 1501 /* use custom SET_REPORT request if possible (asynchronous) */ 1502 if (hid->ll_driver->request) 1503 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1504 1505 /* fall back to generic raw-output-report */ 1506 len = hid_report_len(report); 1507 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1508 if (!buf) 1509 return; 1510 1511 hid_output_report(report, buf); 1512 /* synchronous output report */ 1513 ret = hid_hw_output_report(hid, buf, len); 1514 if (ret == -ENOSYS) 1515 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1516 HID_REQ_SET_REPORT); 1517 kfree(buf); 1518 } 1519 1520 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1521 unsigned int code, int value) 1522 { 1523 struct hid_device *hid = input_get_drvdata(dev); 1524 struct hid_field *field; 1525 int offset; 1526 1527 if (type == EV_FF) 1528 return input_ff_event(dev, type, code, value); 1529 1530 if (type != EV_LED) 1531 return -1; 1532 1533 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1534 hid_warn(dev, "event field not found\n"); 1535 return -1; 1536 } 1537 1538 hid_set_field(field, offset, value); 1539 1540 schedule_work(&hid->led_work); 1541 return 0; 1542 } 1543 1544 static int hidinput_open(struct input_dev *dev) 1545 { 1546 struct hid_device *hid = input_get_drvdata(dev); 1547 1548 return hid_hw_open(hid); 1549 } 1550 1551 static void hidinput_close(struct input_dev *dev) 1552 { 1553 struct hid_device *hid = input_get_drvdata(dev); 1554 1555 hid_hw_close(hid); 1556 } 1557 1558 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1559 struct hid_report *report, bool use_logical_max) 1560 { 1561 struct hid_usage *usage; 1562 bool update_needed = false; 1563 int i, j; 1564 1565 if (report->maxfield == 0) 1566 return false; 1567 1568 /* 1569 * If we have more than one feature within this report we 1570 * need to fill in the bits from the others before we can 1571 * overwrite the ones for the Resolution Multiplier. 1572 */ 1573 if (report->maxfield > 1) { 1574 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1575 hid_hw_wait(hid); 1576 } 1577 1578 for (i = 0; i < report->maxfield; i++) { 1579 __s32 value = use_logical_max ? 1580 report->field[i]->logical_maximum : 1581 report->field[i]->logical_minimum; 1582 1583 /* There is no good reason for a Resolution 1584 * Multiplier to have a count other than 1. 1585 * Ignore that case. 1586 */ 1587 if (report->field[i]->report_count != 1) 1588 continue; 1589 1590 for (j = 0; j < report->field[i]->maxusage; j++) { 1591 usage = &report->field[i]->usage[j]; 1592 1593 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1594 continue; 1595 1596 report->field[i]->value[j] = value; 1597 update_needed = true; 1598 } 1599 } 1600 1601 return update_needed; 1602 } 1603 1604 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1605 { 1606 struct hid_report_enum *rep_enum; 1607 struct hid_report *rep; 1608 int ret; 1609 1610 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1611 list_for_each_entry(rep, &rep_enum->report_list, list) { 1612 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1613 rep, true); 1614 1615 if (update_needed) { 1616 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1617 if (ret) { 1618 __hidinput_change_resolution_multipliers(hid, 1619 rep, false); 1620 return; 1621 } 1622 } 1623 } 1624 1625 /* refresh our structs */ 1626 hid_setup_resolution_multiplier(hid); 1627 } 1628 1629 static void report_features(struct hid_device *hid) 1630 { 1631 struct hid_driver *drv = hid->driver; 1632 struct hid_report_enum *rep_enum; 1633 struct hid_report *rep; 1634 struct hid_usage *usage; 1635 int i, j; 1636 1637 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1638 list_for_each_entry(rep, &rep_enum->report_list, list) 1639 for (i = 0; i < rep->maxfield; i++) { 1640 /* Ignore if report count is out of bounds. */ 1641 if (rep->field[i]->report_count < 1) 1642 continue; 1643 1644 for (j = 0; j < rep->field[i]->maxusage; j++) { 1645 usage = &rep->field[i]->usage[j]; 1646 1647 /* Verify if Battery Strength feature is available */ 1648 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1649 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1650 rep->field[i]); 1651 1652 if (drv->feature_mapping) 1653 drv->feature_mapping(hid, rep->field[i], usage); 1654 } 1655 } 1656 } 1657 1658 static struct hid_input *hidinput_allocate(struct hid_device *hid, 1659 unsigned int application) 1660 { 1661 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1662 struct input_dev *input_dev = input_allocate_device(); 1663 const char *suffix = NULL; 1664 size_t suffix_len, name_len; 1665 1666 if (!hidinput || !input_dev) 1667 goto fail; 1668 1669 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1670 hid->maxapplication > 1) { 1671 switch (application) { 1672 case HID_GD_KEYBOARD: 1673 suffix = "Keyboard"; 1674 break; 1675 case HID_GD_KEYPAD: 1676 suffix = "Keypad"; 1677 break; 1678 case HID_GD_MOUSE: 1679 suffix = "Mouse"; 1680 break; 1681 case HID_DG_STYLUS: 1682 suffix = "Pen"; 1683 break; 1684 case HID_DG_TOUCHSCREEN: 1685 suffix = "Touchscreen"; 1686 break; 1687 case HID_DG_TOUCHPAD: 1688 suffix = "Touchpad"; 1689 break; 1690 case HID_GD_SYSTEM_CONTROL: 1691 suffix = "System Control"; 1692 break; 1693 case HID_CP_CONSUMER_CONTROL: 1694 suffix = "Consumer Control"; 1695 break; 1696 case HID_GD_WIRELESS_RADIO_CTLS: 1697 suffix = "Wireless Radio Control"; 1698 break; 1699 case HID_GD_SYSTEM_MULTIAXIS: 1700 suffix = "System Multi Axis"; 1701 break; 1702 default: 1703 break; 1704 } 1705 } 1706 1707 if (suffix) { 1708 name_len = strlen(hid->name); 1709 suffix_len = strlen(suffix); 1710 if ((name_len < suffix_len) || 1711 strcmp(hid->name + name_len - suffix_len, suffix)) { 1712 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1713 hid->name, suffix); 1714 if (!hidinput->name) 1715 goto fail; 1716 } 1717 } 1718 1719 input_set_drvdata(input_dev, hid); 1720 input_dev->event = hidinput_input_event; 1721 input_dev->open = hidinput_open; 1722 input_dev->close = hidinput_close; 1723 input_dev->setkeycode = hidinput_setkeycode; 1724 input_dev->getkeycode = hidinput_getkeycode; 1725 1726 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1727 input_dev->phys = hid->phys; 1728 input_dev->uniq = hid->uniq; 1729 input_dev->id.bustype = hid->bus; 1730 input_dev->id.vendor = hid->vendor; 1731 input_dev->id.product = hid->product; 1732 input_dev->id.version = hid->version; 1733 input_dev->dev.parent = &hid->dev; 1734 1735 hidinput->input = input_dev; 1736 hidinput->application = application; 1737 list_add_tail(&hidinput->list, &hid->inputs); 1738 1739 INIT_LIST_HEAD(&hidinput->reports); 1740 1741 return hidinput; 1742 1743 fail: 1744 kfree(hidinput); 1745 input_free_device(input_dev); 1746 hid_err(hid, "Out of memory during hid input probe\n"); 1747 return NULL; 1748 } 1749 1750 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1751 { 1752 int i; 1753 unsigned long r = 0; 1754 1755 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1756 r |= hidinput->input->evbit[i]; 1757 1758 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1759 r |= hidinput->input->keybit[i]; 1760 1761 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1762 r |= hidinput->input->relbit[i]; 1763 1764 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1765 r |= hidinput->input->absbit[i]; 1766 1767 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1768 r |= hidinput->input->mscbit[i]; 1769 1770 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1771 r |= hidinput->input->ledbit[i]; 1772 1773 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1774 r |= hidinput->input->sndbit[i]; 1775 1776 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1777 r |= hidinput->input->ffbit[i]; 1778 1779 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1780 r |= hidinput->input->swbit[i]; 1781 1782 return !!r; 1783 } 1784 1785 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1786 struct hid_input *hidinput) 1787 { 1788 struct hid_report *report; 1789 int i, k; 1790 1791 list_del(&hidinput->list); 1792 input_free_device(hidinput->input); 1793 kfree(hidinput->name); 1794 1795 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1796 if (k == HID_OUTPUT_REPORT && 1797 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1798 continue; 1799 1800 list_for_each_entry(report, &hid->report_enum[k].report_list, 1801 list) { 1802 1803 for (i = 0; i < report->maxfield; i++) 1804 if (report->field[i]->hidinput == hidinput) 1805 report->field[i]->hidinput = NULL; 1806 } 1807 } 1808 1809 kfree(hidinput); 1810 } 1811 1812 static struct hid_input *hidinput_match(struct hid_report *report) 1813 { 1814 struct hid_device *hid = report->device; 1815 struct hid_input *hidinput; 1816 1817 list_for_each_entry(hidinput, &hid->inputs, list) { 1818 if (hidinput->report && 1819 hidinput->report->id == report->id) 1820 return hidinput; 1821 } 1822 1823 return NULL; 1824 } 1825 1826 static struct hid_input *hidinput_match_application(struct hid_report *report) 1827 { 1828 struct hid_device *hid = report->device; 1829 struct hid_input *hidinput; 1830 1831 list_for_each_entry(hidinput, &hid->inputs, list) { 1832 if (hidinput->application == report->application) 1833 return hidinput; 1834 } 1835 1836 return NULL; 1837 } 1838 1839 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1840 struct hid_report *report) 1841 { 1842 int i, j; 1843 1844 for (i = 0; i < report->maxfield; i++) 1845 for (j = 0; j < report->field[i]->maxusage; j++) 1846 hidinput_configure_usage(hidinput, report->field[i], 1847 report->field[i]->usage + j); 1848 } 1849 1850 /* 1851 * Register the input device; print a message. 1852 * Configure the input layer interface 1853 * Read all reports and initialize the absolute field values. 1854 */ 1855 1856 int hidinput_connect(struct hid_device *hid, unsigned int force) 1857 { 1858 struct hid_driver *drv = hid->driver; 1859 struct hid_report *report; 1860 struct hid_input *next, *hidinput = NULL; 1861 unsigned int application; 1862 int i, k; 1863 1864 INIT_LIST_HEAD(&hid->inputs); 1865 INIT_WORK(&hid->led_work, hidinput_led_worker); 1866 1867 hid->status &= ~HID_STAT_DUP_DETECTED; 1868 1869 if (!force) { 1870 for (i = 0; i < hid->maxcollection; i++) { 1871 struct hid_collection *col = &hid->collection[i]; 1872 if (col->type == HID_COLLECTION_APPLICATION || 1873 col->type == HID_COLLECTION_PHYSICAL) 1874 if (IS_INPUT_APPLICATION(col->usage)) 1875 break; 1876 } 1877 1878 if (i == hid->maxcollection) 1879 return -1; 1880 } 1881 1882 report_features(hid); 1883 1884 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1885 if (k == HID_OUTPUT_REPORT && 1886 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1887 continue; 1888 1889 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1890 1891 if (!report->maxfield) 1892 continue; 1893 1894 application = report->application; 1895 1896 /* 1897 * Find the previous hidinput report attached 1898 * to this report id. 1899 */ 1900 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1901 hidinput = hidinput_match(report); 1902 else if (hid->maxapplication > 1 && 1903 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1904 hidinput = hidinput_match_application(report); 1905 1906 if (!hidinput) { 1907 hidinput = hidinput_allocate(hid, application); 1908 if (!hidinput) 1909 goto out_unwind; 1910 } 1911 1912 hidinput_configure_usages(hidinput, report); 1913 1914 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1915 hidinput->report = report; 1916 1917 list_add_tail(&report->hidinput_list, 1918 &hidinput->reports); 1919 } 1920 } 1921 1922 hidinput_change_resolution_multipliers(hid); 1923 1924 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1925 if (drv->input_configured && 1926 drv->input_configured(hid, hidinput)) 1927 goto out_unwind; 1928 1929 if (!hidinput_has_been_populated(hidinput)) { 1930 /* no need to register an input device not populated */ 1931 hidinput_cleanup_hidinput(hid, hidinput); 1932 continue; 1933 } 1934 1935 if (input_register_device(hidinput->input)) 1936 goto out_unwind; 1937 hidinput->registered = true; 1938 } 1939 1940 if (list_empty(&hid->inputs)) { 1941 hid_err(hid, "No inputs registered, leaving\n"); 1942 goto out_unwind; 1943 } 1944 1945 if (hid->status & HID_STAT_DUP_DETECTED) 1946 hid_dbg(hid, 1947 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 1948 1949 return 0; 1950 1951 out_unwind: 1952 /* unwind the ones we already registered */ 1953 hidinput_disconnect(hid); 1954 1955 return -1; 1956 } 1957 EXPORT_SYMBOL_GPL(hidinput_connect); 1958 1959 void hidinput_disconnect(struct hid_device *hid) 1960 { 1961 struct hid_input *hidinput, *next; 1962 1963 hidinput_cleanup_battery(hid); 1964 1965 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1966 list_del(&hidinput->list); 1967 if (hidinput->registered) 1968 input_unregister_device(hidinput->input); 1969 else 1970 input_free_device(hidinput->input); 1971 kfree(hidinput->name); 1972 kfree(hidinput); 1973 } 1974 1975 /* led_work is spawned by input_dev callbacks, but doesn't access the 1976 * parent input_dev at all. Once all input devices are removed, we 1977 * know that led_work will never get restarted, so we can cancel it 1978 * synchronously and are safe. */ 1979 cancel_work_sync(&hid->led_work); 1980 } 1981 EXPORT_SYMBOL_GPL(hidinput_disconnect); 1982