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 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 323 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD), 324 HID_BATTERY_QUIRK_IGNORE }, 325 {} 326 }; 327 328 static unsigned find_battery_quirk(struct hid_device *hdev) 329 { 330 unsigned quirks = 0; 331 const struct hid_device_id *match; 332 333 match = hid_match_id(hdev, hid_battery_quirks); 334 if (match != NULL) 335 quirks = match->driver_data; 336 337 return quirks; 338 } 339 340 static int hidinput_scale_battery_capacity(struct hid_device *dev, 341 int value) 342 { 343 if (dev->battery_min < dev->battery_max && 344 value >= dev->battery_min && value <= dev->battery_max) 345 value = ((value - dev->battery_min) * 100) / 346 (dev->battery_max - dev->battery_min); 347 348 return value; 349 } 350 351 static int hidinput_query_battery_capacity(struct hid_device *dev) 352 { 353 u8 *buf; 354 int ret; 355 356 buf = kmalloc(4, GFP_KERNEL); 357 if (!buf) 358 return -ENOMEM; 359 360 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4, 361 dev->battery_report_type, HID_REQ_GET_REPORT); 362 if (ret < 2) { 363 kfree(buf); 364 return -ENODATA; 365 } 366 367 ret = hidinput_scale_battery_capacity(dev, buf[1]); 368 kfree(buf); 369 return ret; 370 } 371 372 static int hidinput_get_battery_property(struct power_supply *psy, 373 enum power_supply_property prop, 374 union power_supply_propval *val) 375 { 376 struct hid_device *dev = power_supply_get_drvdata(psy); 377 int value; 378 int ret = 0; 379 380 switch (prop) { 381 case POWER_SUPPLY_PROP_PRESENT: 382 case POWER_SUPPLY_PROP_ONLINE: 383 val->intval = 1; 384 break; 385 386 case POWER_SUPPLY_PROP_CAPACITY: 387 if (dev->battery_status != HID_BATTERY_REPORTED && 388 !dev->battery_avoid_query) { 389 value = hidinput_query_battery_capacity(dev); 390 if (value < 0) 391 return value; 392 } else { 393 value = dev->battery_capacity; 394 } 395 396 val->intval = value; 397 break; 398 399 case POWER_SUPPLY_PROP_MODEL_NAME: 400 val->strval = dev->name; 401 break; 402 403 case POWER_SUPPLY_PROP_STATUS: 404 if (dev->battery_status != HID_BATTERY_REPORTED && 405 !dev->battery_avoid_query) { 406 value = hidinput_query_battery_capacity(dev); 407 if (value < 0) 408 return value; 409 410 dev->battery_capacity = value; 411 dev->battery_status = HID_BATTERY_QUERIED; 412 } 413 414 if (dev->battery_status == HID_BATTERY_UNKNOWN) 415 val->intval = POWER_SUPPLY_STATUS_UNKNOWN; 416 else if (dev->battery_capacity == 100) 417 val->intval = POWER_SUPPLY_STATUS_FULL; 418 else 419 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 420 break; 421 422 case POWER_SUPPLY_PROP_SCOPE: 423 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 424 break; 425 426 default: 427 ret = -EINVAL; 428 break; 429 } 430 431 return ret; 432 } 433 434 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field) 435 { 436 struct power_supply_desc *psy_desc; 437 struct power_supply_config psy_cfg = { .drv_data = dev, }; 438 unsigned quirks; 439 s32 min, max; 440 int error; 441 442 if (dev->battery) 443 return 0; /* already initialized? */ 444 445 quirks = find_battery_quirk(dev); 446 447 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 448 dev->bus, dev->vendor, dev->product, dev->version, quirks); 449 450 if (quirks & HID_BATTERY_QUIRK_IGNORE) 451 return 0; 452 453 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); 454 if (!psy_desc) 455 return -ENOMEM; 456 457 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", 458 strlen(dev->uniq) ? 459 dev->uniq : dev_name(&dev->dev)); 460 if (!psy_desc->name) { 461 error = -ENOMEM; 462 goto err_free_mem; 463 } 464 465 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 466 psy_desc->properties = hidinput_battery_props; 467 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); 468 psy_desc->use_for_apm = 0; 469 psy_desc->get_property = hidinput_get_battery_property; 470 471 min = field->logical_minimum; 472 max = field->logical_maximum; 473 474 if (quirks & HID_BATTERY_QUIRK_PERCENT) { 475 min = 0; 476 max = 100; 477 } 478 479 if (quirks & HID_BATTERY_QUIRK_FEATURE) 480 report_type = HID_FEATURE_REPORT; 481 482 dev->battery_min = min; 483 dev->battery_max = max; 484 dev->battery_report_type = report_type; 485 dev->battery_report_id = field->report->id; 486 487 /* 488 * Stylus is normally not connected to the device and thus we 489 * can't query the device and get meaningful battery strength. 490 * We have to wait for the device to report it on its own. 491 */ 492 dev->battery_avoid_query = report_type == HID_INPUT_REPORT && 493 field->physical == HID_DG_STYLUS; 494 495 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); 496 if (IS_ERR(dev->battery)) { 497 error = PTR_ERR(dev->battery); 498 hid_warn(dev, "can't register power supply: %d\n", error); 499 goto err_free_name; 500 } 501 502 power_supply_powers(dev->battery, &dev->dev); 503 return 0; 504 505 err_free_name: 506 kfree(psy_desc->name); 507 err_free_mem: 508 kfree(psy_desc); 509 dev->battery = NULL; 510 return error; 511 } 512 513 static void hidinput_cleanup_battery(struct hid_device *dev) 514 { 515 const struct power_supply_desc *psy_desc; 516 517 if (!dev->battery) 518 return; 519 520 psy_desc = dev->battery->desc; 521 power_supply_unregister(dev->battery); 522 kfree(psy_desc->name); 523 kfree(psy_desc); 524 dev->battery = NULL; 525 } 526 527 static void hidinput_update_battery(struct hid_device *dev, int value) 528 { 529 int capacity; 530 531 if (!dev->battery) 532 return; 533 534 if (value == 0 || value < dev->battery_min || value > dev->battery_max) 535 return; 536 537 capacity = hidinput_scale_battery_capacity(dev, value); 538 539 if (dev->battery_status != HID_BATTERY_REPORTED || 540 capacity != dev->battery_capacity) { 541 dev->battery_capacity = capacity; 542 dev->battery_status = HID_BATTERY_REPORTED; 543 power_supply_changed(dev->battery); 544 } 545 } 546 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 547 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 548 struct hid_field *field) 549 { 550 return 0; 551 } 552 553 static void hidinput_cleanup_battery(struct hid_device *dev) 554 { 555 } 556 557 static void hidinput_update_battery(struct hid_device *dev, int value) 558 { 559 } 560 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 561 562 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 563 struct hid_usage *usage) 564 { 565 struct input_dev *input = hidinput->input; 566 struct hid_device *device = input_get_drvdata(input); 567 int max = 0, code; 568 unsigned long *bit = NULL; 569 570 field->hidinput = hidinput; 571 572 if (field->flags & HID_MAIN_ITEM_CONSTANT) 573 goto ignore; 574 575 /* Ignore if report count is out of bounds. */ 576 if (field->report_count < 1) 577 goto ignore; 578 579 /* only LED usages are supported in output fields */ 580 if (field->report_type == HID_OUTPUT_REPORT && 581 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 582 goto ignore; 583 } 584 585 if (device->driver->input_mapping) { 586 int ret = device->driver->input_mapping(device, hidinput, field, 587 usage, &bit, &max); 588 if (ret > 0) 589 goto mapped; 590 if (ret < 0) 591 goto ignore; 592 } 593 594 switch (usage->hid & HID_USAGE_PAGE) { 595 case HID_UP_UNDEFINED: 596 goto ignore; 597 598 case HID_UP_KEYBOARD: 599 set_bit(EV_REP, input->evbit); 600 601 if ((usage->hid & HID_USAGE) < 256) { 602 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 603 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 604 } else 605 map_key(KEY_UNKNOWN); 606 607 break; 608 609 case HID_UP_BUTTON: 610 code = ((usage->hid - 1) & HID_USAGE); 611 612 switch (field->application) { 613 case HID_GD_MOUSE: 614 case HID_GD_POINTER: code += BTN_MOUSE; break; 615 case HID_GD_JOYSTICK: 616 if (code <= 0xf) 617 code += BTN_JOYSTICK; 618 else 619 code += BTN_TRIGGER_HAPPY - 0x10; 620 break; 621 case HID_GD_GAMEPAD: 622 if (code <= 0xf) 623 code += BTN_GAMEPAD; 624 else 625 code += BTN_TRIGGER_HAPPY - 0x10; 626 break; 627 default: 628 switch (field->physical) { 629 case HID_GD_MOUSE: 630 case HID_GD_POINTER: code += BTN_MOUSE; break; 631 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 632 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 633 default: code += BTN_MISC; 634 } 635 } 636 637 map_key(code); 638 break; 639 640 case HID_UP_SIMULATION: 641 switch (usage->hid & 0xffff) { 642 case 0xba: map_abs(ABS_RUDDER); break; 643 case 0xbb: map_abs(ABS_THROTTLE); break; 644 case 0xc4: map_abs(ABS_GAS); break; 645 case 0xc5: map_abs(ABS_BRAKE); break; 646 case 0xc8: map_abs(ABS_WHEEL); break; 647 default: goto ignore; 648 } 649 break; 650 651 case HID_UP_GENDESK: 652 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 653 switch (usage->hid & 0xf) { 654 case 0x1: map_key_clear(KEY_POWER); break; 655 case 0x2: map_key_clear(KEY_SLEEP); break; 656 case 0x3: map_key_clear(KEY_WAKEUP); break; 657 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 658 case 0x5: map_key_clear(KEY_MENU); break; 659 case 0x6: map_key_clear(KEY_PROG1); break; 660 case 0x7: map_key_clear(KEY_HELP); break; 661 case 0x8: map_key_clear(KEY_EXIT); break; 662 case 0x9: map_key_clear(KEY_SELECT); break; 663 case 0xa: map_key_clear(KEY_RIGHT); break; 664 case 0xb: map_key_clear(KEY_LEFT); break; 665 case 0xc: map_key_clear(KEY_UP); break; 666 case 0xd: map_key_clear(KEY_DOWN); break; 667 case 0xe: map_key_clear(KEY_POWER2); break; 668 case 0xf: map_key_clear(KEY_RESTART); break; 669 default: goto unknown; 670 } 671 break; 672 } 673 674 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */ 675 switch (usage->hid & 0xf) { 676 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break; 677 default: goto ignore; 678 } 679 break; 680 } 681 682 /* 683 * Some lazy vendors declare 255 usages for System Control, 684 * leading to the creation of ABS_X|Y axis and too many others. 685 * It wouldn't be a problem if joydev doesn't consider the 686 * device as a joystick then. 687 */ 688 if (field->application == HID_GD_SYSTEM_CONTROL) 689 goto ignore; 690 691 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 692 switch (usage->hid) { 693 case HID_GD_UP: usage->hat_dir = 1; break; 694 case HID_GD_DOWN: usage->hat_dir = 5; break; 695 case HID_GD_RIGHT: usage->hat_dir = 3; break; 696 case HID_GD_LEFT: usage->hat_dir = 7; break; 697 default: goto unknown; 698 } 699 if (field->dpad) { 700 map_abs(field->dpad); 701 goto ignore; 702 } 703 map_abs(ABS_HAT0X); 704 break; 705 } 706 707 switch (usage->hid) { 708 /* These usage IDs map directly to the usage codes. */ 709 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 710 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 711 if (field->flags & HID_MAIN_ITEM_RELATIVE) 712 map_rel(usage->hid & 0xf); 713 else 714 map_abs_clear(usage->hid & 0xf); 715 break; 716 717 case HID_GD_WHEEL: 718 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 719 set_bit(REL_WHEEL, input->relbit); 720 map_rel(REL_WHEEL_HI_RES); 721 } else { 722 map_abs(usage->hid & 0xf); 723 } 724 break; 725 case HID_GD_SLIDER: case HID_GD_DIAL: 726 if (field->flags & HID_MAIN_ITEM_RELATIVE) 727 map_rel(usage->hid & 0xf); 728 else 729 map_abs(usage->hid & 0xf); 730 break; 731 732 case HID_GD_HATSWITCH: 733 usage->hat_min = field->logical_minimum; 734 usage->hat_max = field->logical_maximum; 735 map_abs(ABS_HAT0X); 736 break; 737 738 case HID_GD_START: map_key_clear(BTN_START); break; 739 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 740 741 case HID_GD_RFKILL_BTN: 742 /* MS wireless radio ctl extension, also check CA */ 743 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 744 map_key_clear(KEY_RFKILL); 745 /* We need to simulate the btn release */ 746 field->flags |= HID_MAIN_ITEM_RELATIVE; 747 break; 748 } 749 750 default: goto unknown; 751 } 752 753 break; 754 755 case HID_UP_LED: 756 switch (usage->hid & 0xffff) { /* HID-Value: */ 757 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 758 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 759 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 760 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 761 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 762 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 763 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 764 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 765 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 766 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 767 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 768 769 default: goto ignore; 770 } 771 break; 772 773 case HID_UP_DIGITIZER: 774 if ((field->application & 0xff) == 0x01) /* Digitizer */ 775 __set_bit(INPUT_PROP_POINTER, input->propbit); 776 else if ((field->application & 0xff) == 0x02) /* Pen */ 777 __set_bit(INPUT_PROP_DIRECT, input->propbit); 778 779 switch (usage->hid & 0xff) { 780 case 0x00: /* Undefined */ 781 goto ignore; 782 783 case 0x30: /* TipPressure */ 784 if (!test_bit(BTN_TOUCH, input->keybit)) { 785 device->quirks |= HID_QUIRK_NOTOUCH; 786 set_bit(EV_KEY, input->evbit); 787 set_bit(BTN_TOUCH, input->keybit); 788 } 789 map_abs_clear(ABS_PRESSURE); 790 break; 791 792 case 0x32: /* InRange */ 793 switch (field->physical & 0xff) { 794 case 0x21: map_key(BTN_TOOL_MOUSE); break; 795 case 0x22: map_key(BTN_TOOL_FINGER); break; 796 default: map_key(BTN_TOOL_PEN); break; 797 } 798 break; 799 800 case 0x3b: /* Battery Strength */ 801 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 802 usage->type = EV_PWR; 803 return; 804 805 case 0x3c: /* Invert */ 806 map_key_clear(BTN_TOOL_RUBBER); 807 break; 808 809 case 0x3d: /* X Tilt */ 810 map_abs_clear(ABS_TILT_X); 811 break; 812 813 case 0x3e: /* Y Tilt */ 814 map_abs_clear(ABS_TILT_Y); 815 break; 816 817 case 0x33: /* Touch */ 818 case 0x42: /* TipSwitch */ 819 case 0x43: /* TipSwitch2 */ 820 device->quirks &= ~HID_QUIRK_NOTOUCH; 821 map_key_clear(BTN_TOUCH); 822 break; 823 824 case 0x44: /* BarrelSwitch */ 825 map_key_clear(BTN_STYLUS); 826 break; 827 828 case 0x45: /* ERASER */ 829 /* 830 * This event is reported when eraser tip touches the surface. 831 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when 832 * tool gets in proximity. 833 */ 834 map_key_clear(BTN_TOUCH); 835 break; 836 837 case 0x46: /* TabletPick */ 838 case 0x5a: /* SecondaryBarrelSwitch */ 839 map_key_clear(BTN_STYLUS2); 840 break; 841 842 case 0x5b: /* TransducerSerialNumber */ 843 usage->type = EV_MSC; 844 usage->code = MSC_SERIAL; 845 bit = input->mscbit; 846 max = MSC_MAX; 847 break; 848 849 default: goto unknown; 850 } 851 break; 852 853 case HID_UP_TELEPHONY: 854 switch (usage->hid & HID_USAGE) { 855 case 0x2f: map_key_clear(KEY_MICMUTE); break; 856 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 857 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 858 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 859 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 860 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 861 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 862 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 863 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 864 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 865 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 866 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 867 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 868 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 869 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 870 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 871 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 872 default: goto ignore; 873 } 874 break; 875 876 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 877 switch (usage->hid & HID_USAGE) { 878 case 0x000: goto ignore; 879 case 0x030: map_key_clear(KEY_POWER); break; 880 case 0x031: map_key_clear(KEY_RESTART); break; 881 case 0x032: map_key_clear(KEY_SLEEP); break; 882 case 0x034: map_key_clear(KEY_SLEEP); break; 883 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 884 case 0x036: map_key_clear(BTN_MISC); break; 885 886 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 887 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 888 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 889 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 890 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 891 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 892 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 893 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 894 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 895 896 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 897 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 898 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 899 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 900 case 0x069: map_key_clear(KEY_RED); break; 901 case 0x06a: map_key_clear(KEY_GREEN); break; 902 case 0x06b: map_key_clear(KEY_BLUE); break; 903 case 0x06c: map_key_clear(KEY_YELLOW); break; 904 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break; 905 906 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 907 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 908 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 909 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 910 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 911 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 912 913 case 0x079: map_key_clear(KEY_KBDILLUMUP); break; 914 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break; 915 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break; 916 917 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 918 case 0x083: map_key_clear(KEY_LAST); break; 919 case 0x084: map_key_clear(KEY_ENTER); break; 920 case 0x088: map_key_clear(KEY_PC); break; 921 case 0x089: map_key_clear(KEY_TV); break; 922 case 0x08a: map_key_clear(KEY_WWW); break; 923 case 0x08b: map_key_clear(KEY_DVD); break; 924 case 0x08c: map_key_clear(KEY_PHONE); break; 925 case 0x08d: map_key_clear(KEY_PROGRAM); break; 926 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 927 case 0x08f: map_key_clear(KEY_GAMES); break; 928 case 0x090: map_key_clear(KEY_MEMO); break; 929 case 0x091: map_key_clear(KEY_CD); break; 930 case 0x092: map_key_clear(KEY_VCR); break; 931 case 0x093: map_key_clear(KEY_TUNER); break; 932 case 0x094: map_key_clear(KEY_EXIT); break; 933 case 0x095: map_key_clear(KEY_HELP); break; 934 case 0x096: map_key_clear(KEY_TAPE); break; 935 case 0x097: map_key_clear(KEY_TV2); break; 936 case 0x098: map_key_clear(KEY_SAT); break; 937 case 0x09a: map_key_clear(KEY_PVR); break; 938 939 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 940 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 941 case 0x0a0: map_key_clear(KEY_VCR2); break; 942 943 case 0x0b0: map_key_clear(KEY_PLAY); break; 944 case 0x0b1: map_key_clear(KEY_PAUSE); break; 945 case 0x0b2: map_key_clear(KEY_RECORD); break; 946 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 947 case 0x0b4: map_key_clear(KEY_REWIND); break; 948 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 949 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 950 case 0x0b7: map_key_clear(KEY_STOPCD); break; 951 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 952 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 953 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 954 case 0x0bf: map_key_clear(KEY_SLOW); break; 955 956 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 957 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 958 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 959 case 0x0e2: map_key_clear(KEY_MUTE); break; 960 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 961 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 962 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 963 case 0x0f5: map_key_clear(KEY_SLOW); break; 964 965 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 966 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 967 case 0x183: map_key_clear(KEY_CONFIG); break; 968 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 969 case 0x185: map_key_clear(KEY_EDITOR); break; 970 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 971 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 972 case 0x188: map_key_clear(KEY_PRESENTATION); break; 973 case 0x189: map_key_clear(KEY_DATABASE); break; 974 case 0x18a: map_key_clear(KEY_MAIL); break; 975 case 0x18b: map_key_clear(KEY_NEWS); break; 976 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 977 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 978 case 0x18e: map_key_clear(KEY_CALENDAR); break; 979 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 980 case 0x190: map_key_clear(KEY_JOURNAL); break; 981 case 0x191: map_key_clear(KEY_FINANCE); break; 982 case 0x192: map_key_clear(KEY_CALC); break; 983 case 0x193: map_key_clear(KEY_PLAYER); break; 984 case 0x194: map_key_clear(KEY_FILE); break; 985 case 0x196: map_key_clear(KEY_WWW); break; 986 case 0x199: map_key_clear(KEY_CHAT); break; 987 case 0x19c: map_key_clear(KEY_LOGOFF); break; 988 case 0x19e: map_key_clear(KEY_COFFEE); break; 989 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 990 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 991 case 0x1a3: map_key_clear(KEY_NEXT); break; 992 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 993 case 0x1a6: map_key_clear(KEY_HELP); break; 994 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 995 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 996 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 997 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 998 case 0x1b4: map_key_clear(KEY_FILE); break; 999 case 0x1b6: map_key_clear(KEY_IMAGES); break; 1000 case 0x1b7: map_key_clear(KEY_AUDIO); break; 1001 case 0x1b8: map_key_clear(KEY_VIDEO); break; 1002 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1003 case 0x1bd: map_key_clear(KEY_INFO); break; 1004 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1005 case 0x201: map_key_clear(KEY_NEW); break; 1006 case 0x202: map_key_clear(KEY_OPEN); break; 1007 case 0x203: map_key_clear(KEY_CLOSE); break; 1008 case 0x204: map_key_clear(KEY_EXIT); break; 1009 case 0x207: map_key_clear(KEY_SAVE); break; 1010 case 0x208: map_key_clear(KEY_PRINT); break; 1011 case 0x209: map_key_clear(KEY_PROPS); break; 1012 case 0x21a: map_key_clear(KEY_UNDO); break; 1013 case 0x21b: map_key_clear(KEY_COPY); break; 1014 case 0x21c: map_key_clear(KEY_CUT); break; 1015 case 0x21d: map_key_clear(KEY_PASTE); break; 1016 case 0x21f: map_key_clear(KEY_FIND); break; 1017 case 0x221: map_key_clear(KEY_SEARCH); break; 1018 case 0x222: map_key_clear(KEY_GOTO); break; 1019 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1020 case 0x224: map_key_clear(KEY_BACK); break; 1021 case 0x225: map_key_clear(KEY_FORWARD); break; 1022 case 0x226: map_key_clear(KEY_STOP); break; 1023 case 0x227: map_key_clear(KEY_REFRESH); break; 1024 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1025 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1026 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1027 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1028 case 0x232: map_key_clear(KEY_FULL_SCREEN); break; 1029 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1030 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1031 case 0x238: /* AC Pan */ 1032 set_bit(REL_HWHEEL, input->relbit); 1033 map_rel(REL_HWHEEL_HI_RES); 1034 break; 1035 case 0x23d: map_key_clear(KEY_EDIT); break; 1036 case 0x25f: map_key_clear(KEY_CANCEL); break; 1037 case 0x269: map_key_clear(KEY_INSERT); break; 1038 case 0x26a: map_key_clear(KEY_DELETE); break; 1039 case 0x279: map_key_clear(KEY_REDO); break; 1040 1041 case 0x289: map_key_clear(KEY_REPLY); break; 1042 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1043 case 0x28c: map_key_clear(KEY_SEND); break; 1044 1045 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break; 1046 1047 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1048 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1049 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1050 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1051 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1052 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1053 1054 case 0x29f: map_key_clear(KEY_SCALE); break; 1055 1056 default: map_key_clear(KEY_UNKNOWN); 1057 } 1058 break; 1059 1060 case HID_UP_GENDEVCTRLS: 1061 switch (usage->hid) { 1062 case HID_DC_BATTERYSTRENGTH: 1063 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 1064 usage->type = EV_PWR; 1065 return; 1066 } 1067 goto unknown; 1068 1069 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1070 set_bit(EV_REP, input->evbit); 1071 switch (usage->hid & HID_USAGE) { 1072 case 0x021: map_key_clear(KEY_PRINT); break; 1073 case 0x070: map_key_clear(KEY_HP); break; 1074 case 0x071: map_key_clear(KEY_CAMERA); break; 1075 case 0x072: map_key_clear(KEY_SOUND); break; 1076 case 0x073: map_key_clear(KEY_QUESTION); break; 1077 case 0x080: map_key_clear(KEY_EMAIL); break; 1078 case 0x081: map_key_clear(KEY_CHAT); break; 1079 case 0x082: map_key_clear(KEY_SEARCH); break; 1080 case 0x083: map_key_clear(KEY_CONNECT); break; 1081 case 0x084: map_key_clear(KEY_FINANCE); break; 1082 case 0x085: map_key_clear(KEY_SPORT); break; 1083 case 0x086: map_key_clear(KEY_SHOP); break; 1084 default: goto ignore; 1085 } 1086 break; 1087 1088 case HID_UP_HPVENDOR2: 1089 set_bit(EV_REP, input->evbit); 1090 switch (usage->hid & HID_USAGE) { 1091 case 0x001: map_key_clear(KEY_MICMUTE); break; 1092 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1093 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1094 default: goto ignore; 1095 } 1096 break; 1097 1098 case HID_UP_MSVENDOR: 1099 goto ignore; 1100 1101 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1102 set_bit(EV_REP, input->evbit); 1103 goto ignore; 1104 1105 case HID_UP_LOGIVENDOR: 1106 /* intentional fallback */ 1107 case HID_UP_LOGIVENDOR2: 1108 /* intentional fallback */ 1109 case HID_UP_LOGIVENDOR3: 1110 goto ignore; 1111 1112 case HID_UP_PID: 1113 switch (usage->hid & HID_USAGE) { 1114 case 0xa4: map_key_clear(BTN_DEAD); break; 1115 default: goto ignore; 1116 } 1117 break; 1118 1119 default: 1120 unknown: 1121 if (field->report_size == 1) { 1122 if (field->report->type == HID_OUTPUT_REPORT) { 1123 map_led(LED_MISC); 1124 break; 1125 } 1126 map_key(BTN_MISC); 1127 break; 1128 } 1129 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1130 map_rel(REL_MISC); 1131 break; 1132 } 1133 map_abs(ABS_MISC); 1134 break; 1135 } 1136 1137 mapped: 1138 /* Mapping failed, bail out */ 1139 if (!bit) 1140 return; 1141 1142 if (device->driver->input_mapped && 1143 device->driver->input_mapped(device, hidinput, field, usage, 1144 &bit, &max) < 0) { 1145 /* 1146 * The driver indicated that no further generic handling 1147 * of the usage is desired. 1148 */ 1149 return; 1150 } 1151 1152 set_bit(usage->type, input->evbit); 1153 1154 /* 1155 * This part is *really* controversial: 1156 * - HID aims at being generic so we should do our best to export 1157 * all incoming events 1158 * - HID describes what events are, so there is no reason for ABS_X 1159 * to be mapped to ABS_Y 1160 * - HID is using *_MISC+N as a default value, but nothing prevents 1161 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1162 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1163 * processing) 1164 * 1165 * If devices still want to use this (at their own risk), they will 1166 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1167 * the default should be a reliable mapping. 1168 */ 1169 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1170 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1171 usage->code = find_next_zero_bit(bit, 1172 max + 1, 1173 usage->code); 1174 } else { 1175 device->status |= HID_STAT_DUP_DETECTED; 1176 goto ignore; 1177 } 1178 } 1179 1180 if (usage->code > max) 1181 goto ignore; 1182 1183 if (usage->type == EV_ABS) { 1184 1185 int a = field->logical_minimum; 1186 int b = field->logical_maximum; 1187 1188 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1189 a = field->logical_minimum = 0; 1190 b = field->logical_maximum = 255; 1191 } 1192 1193 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1194 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1195 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1196 1197 input_abs_set_res(input, usage->code, 1198 hidinput_calc_abs_res(field, usage->code)); 1199 1200 /* use a larger default input buffer for MT devices */ 1201 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1202 input_set_events_per_packet(input, 60); 1203 } 1204 1205 if (usage->type == EV_ABS && 1206 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1207 int i; 1208 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1209 input_set_abs_params(input, i, -1, 1, 0, 0); 1210 set_bit(i, input->absbit); 1211 } 1212 if (usage->hat_dir && !field->dpad) 1213 field->dpad = usage->code; 1214 } 1215 1216 /* for those devices which produce Consumer volume usage as relative, 1217 * we emulate pressing volumeup/volumedown appropriate number of times 1218 * in hidinput_hid_event() 1219 */ 1220 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1221 (usage->code == ABS_VOLUME)) { 1222 set_bit(KEY_VOLUMEUP, input->keybit); 1223 set_bit(KEY_VOLUMEDOWN, input->keybit); 1224 } 1225 1226 if (usage->type == EV_KEY) { 1227 set_bit(EV_MSC, input->evbit); 1228 set_bit(MSC_SCAN, input->mscbit); 1229 } 1230 1231 return; 1232 1233 ignore: 1234 usage->type = 0; 1235 usage->code = 0; 1236 } 1237 1238 static void hidinput_handle_scroll(struct hid_usage *usage, 1239 struct input_dev *input, 1240 __s32 value) 1241 { 1242 int code; 1243 int hi_res, lo_res; 1244 1245 if (value == 0) 1246 return; 1247 1248 if (usage->code == REL_WHEEL_HI_RES) 1249 code = REL_WHEEL; 1250 else 1251 code = REL_HWHEEL; 1252 1253 /* 1254 * Windows reports one wheel click as value 120. Where a high-res 1255 * scroll wheel is present, a fraction of 120 is reported instead. 1256 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1257 * adhere to the 120 expectation. 1258 */ 1259 hi_res = value * 120/usage->resolution_multiplier; 1260 1261 usage->wheel_accumulated += hi_res; 1262 lo_res = usage->wheel_accumulated/120; 1263 if (lo_res) 1264 usage->wheel_accumulated -= lo_res * 120; 1265 1266 input_event(input, EV_REL, code, lo_res); 1267 input_event(input, EV_REL, usage->code, hi_res); 1268 } 1269 1270 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1271 { 1272 struct input_dev *input; 1273 unsigned *quirks = &hid->quirks; 1274 1275 if (!usage->type) 1276 return; 1277 1278 if (usage->type == EV_PWR) { 1279 hidinput_update_battery(hid, value); 1280 return; 1281 } 1282 1283 if (!field->hidinput) 1284 return; 1285 1286 input = field->hidinput->input; 1287 1288 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1289 int hat_dir = usage->hat_dir; 1290 if (!hat_dir) 1291 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1292 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1293 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1294 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1295 return; 1296 } 1297 1298 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 1299 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1300 return; 1301 } 1302 1303 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 1304 if (value) { 1305 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1306 return; 1307 } 1308 input_event(input, usage->type, usage->code, 0); 1309 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1310 return; 1311 } 1312 1313 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 1314 int a = field->logical_minimum; 1315 int b = field->logical_maximum; 1316 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1317 } 1318 1319 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1320 dbg_hid("Maximum Effects - %d\n",value); 1321 return; 1322 } 1323 1324 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1325 dbg_hid("PID Pool Report\n"); 1326 return; 1327 } 1328 1329 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1330 return; 1331 1332 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1333 usage->code == REL_HWHEEL_HI_RES)) { 1334 hidinput_handle_scroll(usage, input, value); 1335 return; 1336 } 1337 1338 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1339 (usage->code == ABS_VOLUME)) { 1340 int count = abs(value); 1341 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1342 int i; 1343 1344 for (i = 0; i < count; i++) { 1345 input_event(input, EV_KEY, direction, 1); 1346 input_sync(input); 1347 input_event(input, EV_KEY, direction, 0); 1348 input_sync(input); 1349 } 1350 return; 1351 } 1352 1353 /* 1354 * Ignore out-of-range values as per HID specification, 1355 * section 5.10 and 6.2.25, when NULL state bit is present. 1356 * When it's not, clamp the value to match Microsoft's input 1357 * driver as mentioned in "Required HID usages for digitizers": 1358 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1359 * 1360 * The logical_minimum < logical_maximum check is done so that we 1361 * don't unintentionally discard values sent by devices which 1362 * don't specify logical min and max. 1363 */ 1364 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1365 (field->logical_minimum < field->logical_maximum)) { 1366 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1367 (value < field->logical_minimum || 1368 value > field->logical_maximum)) { 1369 dbg_hid("Ignoring out-of-range value %x\n", value); 1370 return; 1371 } 1372 value = clamp(value, 1373 field->logical_minimum, 1374 field->logical_maximum); 1375 } 1376 1377 /* 1378 * Ignore reports for absolute data if the data didn't change. This is 1379 * not only an optimization but also fixes 'dead' key reports. Some 1380 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1381 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1382 * can only have one of them physically available. The 'dead' keys 1383 * report constant 0. As all map to the same keycode, they'd confuse 1384 * the input layer. If we filter the 'dead' keys on the HID level, we 1385 * skip the keycode translation and only forward real events. 1386 */ 1387 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1388 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1389 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1390 usage->usage_index < field->maxusage && 1391 value == field->value[usage->usage_index]) 1392 return; 1393 1394 /* report the usage code as scancode if the key status has changed */ 1395 if (usage->type == EV_KEY && 1396 (!test_bit(usage->code, input->key)) == value) 1397 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1398 1399 input_event(input, usage->type, usage->code, value); 1400 1401 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1402 usage->type == EV_KEY && value) { 1403 input_sync(input); 1404 input_event(input, usage->type, usage->code, 0); 1405 } 1406 } 1407 1408 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1409 { 1410 struct hid_input *hidinput; 1411 1412 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1413 return; 1414 1415 list_for_each_entry(hidinput, &hid->inputs, list) 1416 input_sync(hidinput->input); 1417 } 1418 EXPORT_SYMBOL_GPL(hidinput_report_event); 1419 1420 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1421 { 1422 struct hid_report *report; 1423 int i, j; 1424 1425 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1426 for (i = 0; i < report->maxfield; i++) { 1427 *field = report->field[i]; 1428 for (j = 0; j < (*field)->maxusage; j++) 1429 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1430 return j; 1431 } 1432 } 1433 return -1; 1434 } 1435 EXPORT_SYMBOL_GPL(hidinput_find_field); 1436 1437 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1438 { 1439 struct hid_report *report; 1440 struct hid_field *field; 1441 int i, j; 1442 1443 list_for_each_entry(report, 1444 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1445 list) { 1446 for (i = 0; i < report->maxfield; i++) { 1447 field = report->field[i]; 1448 for (j = 0; j < field->maxusage; j++) 1449 if (field->usage[j].type == EV_LED) 1450 return field; 1451 } 1452 } 1453 return NULL; 1454 } 1455 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1456 1457 unsigned int hidinput_count_leds(struct hid_device *hid) 1458 { 1459 struct hid_report *report; 1460 struct hid_field *field; 1461 int i, j; 1462 unsigned int count = 0; 1463 1464 list_for_each_entry(report, 1465 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1466 list) { 1467 for (i = 0; i < report->maxfield; i++) { 1468 field = report->field[i]; 1469 for (j = 0; j < field->maxusage; j++) 1470 if (field->usage[j].type == EV_LED && 1471 field->value[j]) 1472 count += 1; 1473 } 1474 } 1475 return count; 1476 } 1477 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1478 1479 static void hidinput_led_worker(struct work_struct *work) 1480 { 1481 struct hid_device *hid = container_of(work, struct hid_device, 1482 led_work); 1483 struct hid_field *field; 1484 struct hid_report *report; 1485 int ret; 1486 u32 len; 1487 __u8 *buf; 1488 1489 field = hidinput_get_led_field(hid); 1490 if (!field) 1491 return; 1492 1493 /* 1494 * field->report is accessed unlocked regarding HID core. So there might 1495 * be another incoming SET-LED request from user-space, which changes 1496 * the LED state while we assemble our outgoing buffer. However, this 1497 * doesn't matter as hid_output_report() correctly converts it into a 1498 * boolean value no matter what information is currently set on the LED 1499 * field (even garbage). So the remote device will always get a valid 1500 * request. 1501 * And in case we send a wrong value, a next led worker is spawned 1502 * for every SET-LED request so the following worker will send the 1503 * correct value, guaranteed! 1504 */ 1505 1506 report = field->report; 1507 1508 /* use custom SET_REPORT request if possible (asynchronous) */ 1509 if (hid->ll_driver->request) 1510 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1511 1512 /* fall back to generic raw-output-report */ 1513 len = hid_report_len(report); 1514 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1515 if (!buf) 1516 return; 1517 1518 hid_output_report(report, buf); 1519 /* synchronous output report */ 1520 ret = hid_hw_output_report(hid, buf, len); 1521 if (ret == -ENOSYS) 1522 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1523 HID_REQ_SET_REPORT); 1524 kfree(buf); 1525 } 1526 1527 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1528 unsigned int code, int value) 1529 { 1530 struct hid_device *hid = input_get_drvdata(dev); 1531 struct hid_field *field; 1532 int offset; 1533 1534 if (type == EV_FF) 1535 return input_ff_event(dev, type, code, value); 1536 1537 if (type != EV_LED) 1538 return -1; 1539 1540 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1541 hid_warn(dev, "event field not found\n"); 1542 return -1; 1543 } 1544 1545 hid_set_field(field, offset, value); 1546 1547 schedule_work(&hid->led_work); 1548 return 0; 1549 } 1550 1551 static int hidinput_open(struct input_dev *dev) 1552 { 1553 struct hid_device *hid = input_get_drvdata(dev); 1554 1555 return hid_hw_open(hid); 1556 } 1557 1558 static void hidinput_close(struct input_dev *dev) 1559 { 1560 struct hid_device *hid = input_get_drvdata(dev); 1561 1562 hid_hw_close(hid); 1563 } 1564 1565 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1566 struct hid_report *report, bool use_logical_max) 1567 { 1568 struct hid_usage *usage; 1569 bool update_needed = false; 1570 bool get_report_completed = false; 1571 int i, j; 1572 1573 if (report->maxfield == 0) 1574 return false; 1575 1576 for (i = 0; i < report->maxfield; i++) { 1577 __s32 value = use_logical_max ? 1578 report->field[i]->logical_maximum : 1579 report->field[i]->logical_minimum; 1580 1581 /* There is no good reason for a Resolution 1582 * Multiplier to have a count other than 1. 1583 * Ignore that case. 1584 */ 1585 if (report->field[i]->report_count != 1) 1586 continue; 1587 1588 for (j = 0; j < report->field[i]->maxusage; j++) { 1589 usage = &report->field[i]->usage[j]; 1590 1591 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1592 continue; 1593 1594 /* 1595 * If we have more than one feature within this 1596 * report we need to fill in the bits from the 1597 * others before we can overwrite the ones for the 1598 * Resolution Multiplier. 1599 * 1600 * But if we're not allowed to read from the device, 1601 * we just bail. Such a device should not exist 1602 * anyway. 1603 */ 1604 if (!get_report_completed && report->maxfield > 1) { 1605 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) 1606 return update_needed; 1607 1608 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1609 hid_hw_wait(hid); 1610 get_report_completed = true; 1611 } 1612 1613 report->field[i]->value[j] = value; 1614 update_needed = true; 1615 } 1616 } 1617 1618 return update_needed; 1619 } 1620 1621 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1622 { 1623 struct hid_report_enum *rep_enum; 1624 struct hid_report *rep; 1625 int ret; 1626 1627 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1628 list_for_each_entry(rep, &rep_enum->report_list, list) { 1629 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1630 rep, true); 1631 1632 if (update_needed) { 1633 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1634 if (ret) { 1635 __hidinput_change_resolution_multipliers(hid, 1636 rep, false); 1637 return; 1638 } 1639 } 1640 } 1641 1642 /* refresh our structs */ 1643 hid_setup_resolution_multiplier(hid); 1644 } 1645 1646 static void report_features(struct hid_device *hid) 1647 { 1648 struct hid_driver *drv = hid->driver; 1649 struct hid_report_enum *rep_enum; 1650 struct hid_report *rep; 1651 struct hid_usage *usage; 1652 int i, j; 1653 1654 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1655 list_for_each_entry(rep, &rep_enum->report_list, list) 1656 for (i = 0; i < rep->maxfield; i++) { 1657 /* Ignore if report count is out of bounds. */ 1658 if (rep->field[i]->report_count < 1) 1659 continue; 1660 1661 for (j = 0; j < rep->field[i]->maxusage; j++) { 1662 usage = &rep->field[i]->usage[j]; 1663 1664 /* Verify if Battery Strength feature is available */ 1665 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1666 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1667 rep->field[i]); 1668 1669 if (drv->feature_mapping) 1670 drv->feature_mapping(hid, rep->field[i], usage); 1671 } 1672 } 1673 } 1674 1675 static struct hid_input *hidinput_allocate(struct hid_device *hid, 1676 unsigned int application) 1677 { 1678 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1679 struct input_dev *input_dev = input_allocate_device(); 1680 const char *suffix = NULL; 1681 size_t suffix_len, name_len; 1682 1683 if (!hidinput || !input_dev) 1684 goto fail; 1685 1686 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1687 hid->maxapplication > 1) { 1688 switch (application) { 1689 case HID_GD_KEYBOARD: 1690 suffix = "Keyboard"; 1691 break; 1692 case HID_GD_KEYPAD: 1693 suffix = "Keypad"; 1694 break; 1695 case HID_GD_MOUSE: 1696 suffix = "Mouse"; 1697 break; 1698 case HID_DG_STYLUS: 1699 suffix = "Pen"; 1700 break; 1701 case HID_DG_TOUCHSCREEN: 1702 suffix = "Touchscreen"; 1703 break; 1704 case HID_DG_TOUCHPAD: 1705 suffix = "Touchpad"; 1706 break; 1707 case HID_GD_SYSTEM_CONTROL: 1708 suffix = "System Control"; 1709 break; 1710 case HID_CP_CONSUMER_CONTROL: 1711 suffix = "Consumer Control"; 1712 break; 1713 case HID_GD_WIRELESS_RADIO_CTLS: 1714 suffix = "Wireless Radio Control"; 1715 break; 1716 case HID_GD_SYSTEM_MULTIAXIS: 1717 suffix = "System Multi Axis"; 1718 break; 1719 default: 1720 break; 1721 } 1722 } 1723 1724 if (suffix) { 1725 name_len = strlen(hid->name); 1726 suffix_len = strlen(suffix); 1727 if ((name_len < suffix_len) || 1728 strcmp(hid->name + name_len - suffix_len, suffix)) { 1729 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1730 hid->name, suffix); 1731 if (!hidinput->name) 1732 goto fail; 1733 } 1734 } 1735 1736 input_set_drvdata(input_dev, hid); 1737 input_dev->event = hidinput_input_event; 1738 input_dev->open = hidinput_open; 1739 input_dev->close = hidinput_close; 1740 input_dev->setkeycode = hidinput_setkeycode; 1741 input_dev->getkeycode = hidinput_getkeycode; 1742 1743 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1744 input_dev->phys = hid->phys; 1745 input_dev->uniq = hid->uniq; 1746 input_dev->id.bustype = hid->bus; 1747 input_dev->id.vendor = hid->vendor; 1748 input_dev->id.product = hid->product; 1749 input_dev->id.version = hid->version; 1750 input_dev->dev.parent = &hid->dev; 1751 1752 hidinput->input = input_dev; 1753 hidinput->application = application; 1754 list_add_tail(&hidinput->list, &hid->inputs); 1755 1756 INIT_LIST_HEAD(&hidinput->reports); 1757 1758 return hidinput; 1759 1760 fail: 1761 kfree(hidinput); 1762 input_free_device(input_dev); 1763 hid_err(hid, "Out of memory during hid input probe\n"); 1764 return NULL; 1765 } 1766 1767 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1768 { 1769 int i; 1770 unsigned long r = 0; 1771 1772 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1773 r |= hidinput->input->evbit[i]; 1774 1775 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1776 r |= hidinput->input->keybit[i]; 1777 1778 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1779 r |= hidinput->input->relbit[i]; 1780 1781 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1782 r |= hidinput->input->absbit[i]; 1783 1784 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1785 r |= hidinput->input->mscbit[i]; 1786 1787 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1788 r |= hidinput->input->ledbit[i]; 1789 1790 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1791 r |= hidinput->input->sndbit[i]; 1792 1793 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1794 r |= hidinput->input->ffbit[i]; 1795 1796 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1797 r |= hidinput->input->swbit[i]; 1798 1799 return !!r; 1800 } 1801 1802 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1803 struct hid_input *hidinput) 1804 { 1805 struct hid_report *report; 1806 int i, k; 1807 1808 list_del(&hidinput->list); 1809 input_free_device(hidinput->input); 1810 kfree(hidinput->name); 1811 1812 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1813 if (k == HID_OUTPUT_REPORT && 1814 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1815 continue; 1816 1817 list_for_each_entry(report, &hid->report_enum[k].report_list, 1818 list) { 1819 1820 for (i = 0; i < report->maxfield; i++) 1821 if (report->field[i]->hidinput == hidinput) 1822 report->field[i]->hidinput = NULL; 1823 } 1824 } 1825 1826 kfree(hidinput); 1827 } 1828 1829 static struct hid_input *hidinput_match(struct hid_report *report) 1830 { 1831 struct hid_device *hid = report->device; 1832 struct hid_input *hidinput; 1833 1834 list_for_each_entry(hidinput, &hid->inputs, list) { 1835 if (hidinput->report && 1836 hidinput->report->id == report->id) 1837 return hidinput; 1838 } 1839 1840 return NULL; 1841 } 1842 1843 static struct hid_input *hidinput_match_application(struct hid_report *report) 1844 { 1845 struct hid_device *hid = report->device; 1846 struct hid_input *hidinput; 1847 1848 list_for_each_entry(hidinput, &hid->inputs, list) { 1849 if (hidinput->application == report->application) 1850 return hidinput; 1851 } 1852 1853 return NULL; 1854 } 1855 1856 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1857 struct hid_report *report) 1858 { 1859 int i, j; 1860 1861 for (i = 0; i < report->maxfield; i++) 1862 for (j = 0; j < report->field[i]->maxusage; j++) 1863 hidinput_configure_usage(hidinput, report->field[i], 1864 report->field[i]->usage + j); 1865 } 1866 1867 /* 1868 * Register the input device; print a message. 1869 * Configure the input layer interface 1870 * Read all reports and initialize the absolute field values. 1871 */ 1872 1873 int hidinput_connect(struct hid_device *hid, unsigned int force) 1874 { 1875 struct hid_driver *drv = hid->driver; 1876 struct hid_report *report; 1877 struct hid_input *next, *hidinput = NULL; 1878 unsigned int application; 1879 int i, k; 1880 1881 INIT_LIST_HEAD(&hid->inputs); 1882 INIT_WORK(&hid->led_work, hidinput_led_worker); 1883 1884 hid->status &= ~HID_STAT_DUP_DETECTED; 1885 1886 if (!force) { 1887 for (i = 0; i < hid->maxcollection; i++) { 1888 struct hid_collection *col = &hid->collection[i]; 1889 if (col->type == HID_COLLECTION_APPLICATION || 1890 col->type == HID_COLLECTION_PHYSICAL) 1891 if (IS_INPUT_APPLICATION(col->usage)) 1892 break; 1893 } 1894 1895 if (i == hid->maxcollection) 1896 return -1; 1897 } 1898 1899 report_features(hid); 1900 1901 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1902 if (k == HID_OUTPUT_REPORT && 1903 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1904 continue; 1905 1906 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1907 1908 if (!report->maxfield) 1909 continue; 1910 1911 application = report->application; 1912 1913 /* 1914 * Find the previous hidinput report attached 1915 * to this report id. 1916 */ 1917 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1918 hidinput = hidinput_match(report); 1919 else if (hid->maxapplication > 1 && 1920 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1921 hidinput = hidinput_match_application(report); 1922 1923 if (!hidinput) { 1924 hidinput = hidinput_allocate(hid, application); 1925 if (!hidinput) 1926 goto out_unwind; 1927 } 1928 1929 hidinput_configure_usages(hidinput, report); 1930 1931 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1932 hidinput->report = report; 1933 1934 list_add_tail(&report->hidinput_list, 1935 &hidinput->reports); 1936 } 1937 } 1938 1939 hidinput_change_resolution_multipliers(hid); 1940 1941 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1942 if (drv->input_configured && 1943 drv->input_configured(hid, hidinput)) 1944 goto out_unwind; 1945 1946 if (!hidinput_has_been_populated(hidinput)) { 1947 /* no need to register an input device not populated */ 1948 hidinput_cleanup_hidinput(hid, hidinput); 1949 continue; 1950 } 1951 1952 if (input_register_device(hidinput->input)) 1953 goto out_unwind; 1954 hidinput->registered = true; 1955 } 1956 1957 if (list_empty(&hid->inputs)) { 1958 hid_err(hid, "No inputs registered, leaving\n"); 1959 goto out_unwind; 1960 } 1961 1962 if (hid->status & HID_STAT_DUP_DETECTED) 1963 hid_dbg(hid, 1964 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 1965 1966 return 0; 1967 1968 out_unwind: 1969 /* unwind the ones we already registered */ 1970 hidinput_disconnect(hid); 1971 1972 return -1; 1973 } 1974 EXPORT_SYMBOL_GPL(hidinput_connect); 1975 1976 void hidinput_disconnect(struct hid_device *hid) 1977 { 1978 struct hid_input *hidinput, *next; 1979 1980 hidinput_cleanup_battery(hid); 1981 1982 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1983 list_del(&hidinput->list); 1984 if (hidinput->registered) 1985 input_unregister_device(hidinput->input); 1986 else 1987 input_free_device(hidinput->input); 1988 kfree(hidinput->name); 1989 kfree(hidinput); 1990 } 1991 1992 /* led_work is spawned by input_dev callbacks, but doesn't access the 1993 * parent input_dev at all. Once all input devices are removed, we 1994 * know that led_work will never get restarted, so we can cancel it 1995 * synchronously and are safe. */ 1996 cancel_work_sync(&hid->led_work); 1997 } 1998 EXPORT_SYMBOL_GPL(hidinput_disconnect); 1999