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(4, GFP_KERNEL); 354 if (!buf) 355 return -ENOMEM; 356 357 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4, 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 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) { 539 dev->battery_capacity = capacity; 540 dev->battery_status = HID_BATTERY_REPORTED; 541 dev->battery_ratelimit_time = 542 ktime_add_ms(ktime_get_coarse(), 30 * 1000); 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 goto unknown; 750 751 default: goto unknown; 752 } 753 754 break; 755 756 case HID_UP_LED: 757 switch (usage->hid & 0xffff) { /* HID-Value: */ 758 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 759 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 760 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 761 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 762 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 763 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 764 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 765 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 766 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 767 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 768 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 769 770 default: goto ignore; 771 } 772 break; 773 774 case HID_UP_DIGITIZER: 775 if ((field->application & 0xff) == 0x01) /* Digitizer */ 776 __set_bit(INPUT_PROP_POINTER, input->propbit); 777 else if ((field->application & 0xff) == 0x02) /* Pen */ 778 __set_bit(INPUT_PROP_DIRECT, input->propbit); 779 780 switch (usage->hid & 0xff) { 781 case 0x00: /* Undefined */ 782 goto ignore; 783 784 case 0x30: /* TipPressure */ 785 if (!test_bit(BTN_TOUCH, input->keybit)) { 786 device->quirks |= HID_QUIRK_NOTOUCH; 787 set_bit(EV_KEY, input->evbit); 788 set_bit(BTN_TOUCH, input->keybit); 789 } 790 map_abs_clear(ABS_PRESSURE); 791 break; 792 793 case 0x32: /* InRange */ 794 switch (field->physical & 0xff) { 795 case 0x21: map_key(BTN_TOOL_MOUSE); break; 796 case 0x22: map_key(BTN_TOOL_FINGER); break; 797 default: map_key(BTN_TOOL_PEN); break; 798 } 799 break; 800 801 case 0x3b: /* Battery Strength */ 802 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 803 usage->type = EV_PWR; 804 return; 805 806 case 0x3c: /* Invert */ 807 map_key_clear(BTN_TOOL_RUBBER); 808 break; 809 810 case 0x3d: /* X Tilt */ 811 map_abs_clear(ABS_TILT_X); 812 break; 813 814 case 0x3e: /* Y Tilt */ 815 map_abs_clear(ABS_TILT_Y); 816 break; 817 818 case 0x33: /* Touch */ 819 case 0x42: /* TipSwitch */ 820 case 0x43: /* TipSwitch2 */ 821 device->quirks &= ~HID_QUIRK_NOTOUCH; 822 map_key_clear(BTN_TOUCH); 823 break; 824 825 case 0x44: /* BarrelSwitch */ 826 map_key_clear(BTN_STYLUS); 827 break; 828 829 case 0x45: /* ERASER */ 830 /* 831 * This event is reported when eraser tip touches the surface. 832 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when 833 * tool gets in proximity. 834 */ 835 map_key_clear(BTN_TOUCH); 836 break; 837 838 case 0x46: /* TabletPick */ 839 case 0x5a: /* SecondaryBarrelSwitch */ 840 map_key_clear(BTN_STYLUS2); 841 break; 842 843 case 0x5b: /* TransducerSerialNumber */ 844 usage->type = EV_MSC; 845 usage->code = MSC_SERIAL; 846 bit = input->mscbit; 847 max = MSC_MAX; 848 break; 849 850 default: goto unknown; 851 } 852 break; 853 854 case HID_UP_TELEPHONY: 855 switch (usage->hid & HID_USAGE) { 856 case 0x2f: map_key_clear(KEY_MICMUTE); break; 857 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 858 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 859 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 860 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 861 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 862 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 863 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 864 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 865 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 866 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 867 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 868 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 869 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 870 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 871 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 872 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 873 default: goto ignore; 874 } 875 break; 876 877 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 878 switch (usage->hid & HID_USAGE) { 879 case 0x000: goto ignore; 880 case 0x030: map_key_clear(KEY_POWER); break; 881 case 0x031: map_key_clear(KEY_RESTART); break; 882 case 0x032: map_key_clear(KEY_SLEEP); break; 883 case 0x034: map_key_clear(KEY_SLEEP); break; 884 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 885 case 0x036: map_key_clear(BTN_MISC); break; 886 887 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 888 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 889 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 890 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 891 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 892 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 893 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 894 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 895 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 896 897 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 898 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 899 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 900 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 901 case 0x069: map_key_clear(KEY_RED); break; 902 case 0x06a: map_key_clear(KEY_GREEN); break; 903 case 0x06b: map_key_clear(KEY_BLUE); break; 904 case 0x06c: map_key_clear(KEY_YELLOW); break; 905 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break; 906 907 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 908 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 909 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 910 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 911 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 912 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 913 914 case 0x079: map_key_clear(KEY_KBDILLUMUP); break; 915 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break; 916 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break; 917 918 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 919 case 0x083: map_key_clear(KEY_LAST); break; 920 case 0x084: map_key_clear(KEY_ENTER); break; 921 case 0x088: map_key_clear(KEY_PC); break; 922 case 0x089: map_key_clear(KEY_TV); break; 923 case 0x08a: map_key_clear(KEY_WWW); break; 924 case 0x08b: map_key_clear(KEY_DVD); break; 925 case 0x08c: map_key_clear(KEY_PHONE); break; 926 case 0x08d: map_key_clear(KEY_PROGRAM); break; 927 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 928 case 0x08f: map_key_clear(KEY_GAMES); break; 929 case 0x090: map_key_clear(KEY_MEMO); break; 930 case 0x091: map_key_clear(KEY_CD); break; 931 case 0x092: map_key_clear(KEY_VCR); break; 932 case 0x093: map_key_clear(KEY_TUNER); break; 933 case 0x094: map_key_clear(KEY_EXIT); break; 934 case 0x095: map_key_clear(KEY_HELP); break; 935 case 0x096: map_key_clear(KEY_TAPE); break; 936 case 0x097: map_key_clear(KEY_TV2); break; 937 case 0x098: map_key_clear(KEY_SAT); break; 938 case 0x09a: map_key_clear(KEY_PVR); break; 939 940 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 941 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 942 case 0x0a0: map_key_clear(KEY_VCR2); break; 943 944 case 0x0b0: map_key_clear(KEY_PLAY); break; 945 case 0x0b1: map_key_clear(KEY_PAUSE); break; 946 case 0x0b2: map_key_clear(KEY_RECORD); break; 947 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 948 case 0x0b4: map_key_clear(KEY_REWIND); break; 949 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 950 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 951 case 0x0b7: map_key_clear(KEY_STOPCD); break; 952 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 953 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 954 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 955 case 0x0bf: map_key_clear(KEY_SLOW); break; 956 957 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 958 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 959 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 960 case 0x0e2: map_key_clear(KEY_MUTE); break; 961 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 962 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 963 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 964 case 0x0f5: map_key_clear(KEY_SLOW); break; 965 966 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 967 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 968 case 0x183: map_key_clear(KEY_CONFIG); break; 969 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 970 case 0x185: map_key_clear(KEY_EDITOR); break; 971 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 972 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 973 case 0x188: map_key_clear(KEY_PRESENTATION); break; 974 case 0x189: map_key_clear(KEY_DATABASE); break; 975 case 0x18a: map_key_clear(KEY_MAIL); break; 976 case 0x18b: map_key_clear(KEY_NEWS); break; 977 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 978 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 979 case 0x18e: map_key_clear(KEY_CALENDAR); break; 980 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 981 case 0x190: map_key_clear(KEY_JOURNAL); break; 982 case 0x191: map_key_clear(KEY_FINANCE); break; 983 case 0x192: map_key_clear(KEY_CALC); break; 984 case 0x193: map_key_clear(KEY_PLAYER); break; 985 case 0x194: map_key_clear(KEY_FILE); break; 986 case 0x196: map_key_clear(KEY_WWW); break; 987 case 0x199: map_key_clear(KEY_CHAT); break; 988 case 0x19c: map_key_clear(KEY_LOGOFF); break; 989 case 0x19e: map_key_clear(KEY_COFFEE); break; 990 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 991 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 992 case 0x1a3: map_key_clear(KEY_NEXT); break; 993 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 994 case 0x1a6: map_key_clear(KEY_HELP); break; 995 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 996 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 997 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 998 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 999 case 0x1b4: map_key_clear(KEY_FILE); break; 1000 case 0x1b6: map_key_clear(KEY_IMAGES); break; 1001 case 0x1b7: map_key_clear(KEY_AUDIO); break; 1002 case 0x1b8: map_key_clear(KEY_VIDEO); break; 1003 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1004 case 0x1bd: map_key_clear(KEY_INFO); break; 1005 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1006 case 0x201: map_key_clear(KEY_NEW); break; 1007 case 0x202: map_key_clear(KEY_OPEN); break; 1008 case 0x203: map_key_clear(KEY_CLOSE); break; 1009 case 0x204: map_key_clear(KEY_EXIT); break; 1010 case 0x207: map_key_clear(KEY_SAVE); break; 1011 case 0x208: map_key_clear(KEY_PRINT); break; 1012 case 0x209: map_key_clear(KEY_PROPS); break; 1013 case 0x21a: map_key_clear(KEY_UNDO); break; 1014 case 0x21b: map_key_clear(KEY_COPY); break; 1015 case 0x21c: map_key_clear(KEY_CUT); break; 1016 case 0x21d: map_key_clear(KEY_PASTE); break; 1017 case 0x21f: map_key_clear(KEY_FIND); break; 1018 case 0x221: map_key_clear(KEY_SEARCH); break; 1019 case 0x222: map_key_clear(KEY_GOTO); break; 1020 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1021 case 0x224: map_key_clear(KEY_BACK); break; 1022 case 0x225: map_key_clear(KEY_FORWARD); break; 1023 case 0x226: map_key_clear(KEY_STOP); break; 1024 case 0x227: map_key_clear(KEY_REFRESH); break; 1025 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1026 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1027 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1028 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1029 case 0x232: map_key_clear(KEY_FULL_SCREEN); break; 1030 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1031 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1032 case 0x238: /* AC Pan */ 1033 set_bit(REL_HWHEEL, input->relbit); 1034 map_rel(REL_HWHEEL_HI_RES); 1035 break; 1036 case 0x23d: map_key_clear(KEY_EDIT); break; 1037 case 0x25f: map_key_clear(KEY_CANCEL); break; 1038 case 0x269: map_key_clear(KEY_INSERT); break; 1039 case 0x26a: map_key_clear(KEY_DELETE); break; 1040 case 0x279: map_key_clear(KEY_REDO); break; 1041 1042 case 0x289: map_key_clear(KEY_REPLY); break; 1043 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1044 case 0x28c: map_key_clear(KEY_SEND); break; 1045 1046 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break; 1047 1048 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1049 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1050 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1051 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1052 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1053 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1054 1055 case 0x29f: map_key_clear(KEY_SCALE); break; 1056 1057 default: map_key_clear(KEY_UNKNOWN); 1058 } 1059 break; 1060 1061 case HID_UP_GENDEVCTRLS: 1062 switch (usage->hid) { 1063 case HID_DC_BATTERYSTRENGTH: 1064 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 1065 usage->type = EV_PWR; 1066 return; 1067 } 1068 goto unknown; 1069 1070 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1071 set_bit(EV_REP, input->evbit); 1072 switch (usage->hid & HID_USAGE) { 1073 case 0x021: map_key_clear(KEY_PRINT); break; 1074 case 0x070: map_key_clear(KEY_HP); break; 1075 case 0x071: map_key_clear(KEY_CAMERA); break; 1076 case 0x072: map_key_clear(KEY_SOUND); break; 1077 case 0x073: map_key_clear(KEY_QUESTION); break; 1078 case 0x080: map_key_clear(KEY_EMAIL); break; 1079 case 0x081: map_key_clear(KEY_CHAT); break; 1080 case 0x082: map_key_clear(KEY_SEARCH); break; 1081 case 0x083: map_key_clear(KEY_CONNECT); break; 1082 case 0x084: map_key_clear(KEY_FINANCE); break; 1083 case 0x085: map_key_clear(KEY_SPORT); break; 1084 case 0x086: map_key_clear(KEY_SHOP); break; 1085 default: goto ignore; 1086 } 1087 break; 1088 1089 case HID_UP_HPVENDOR2: 1090 set_bit(EV_REP, input->evbit); 1091 switch (usage->hid & HID_USAGE) { 1092 case 0x001: map_key_clear(KEY_MICMUTE); break; 1093 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1094 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1095 default: goto ignore; 1096 } 1097 break; 1098 1099 case HID_UP_MSVENDOR: 1100 goto ignore; 1101 1102 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1103 set_bit(EV_REP, input->evbit); 1104 goto ignore; 1105 1106 case HID_UP_LOGIVENDOR: 1107 /* intentional fallback */ 1108 case HID_UP_LOGIVENDOR2: 1109 /* intentional fallback */ 1110 case HID_UP_LOGIVENDOR3: 1111 goto ignore; 1112 1113 case HID_UP_PID: 1114 switch (usage->hid & HID_USAGE) { 1115 case 0xa4: map_key_clear(BTN_DEAD); break; 1116 default: goto ignore; 1117 } 1118 break; 1119 1120 default: 1121 unknown: 1122 if (field->report_size == 1) { 1123 if (field->report->type == HID_OUTPUT_REPORT) { 1124 map_led(LED_MISC); 1125 break; 1126 } 1127 map_key(BTN_MISC); 1128 break; 1129 } 1130 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1131 map_rel(REL_MISC); 1132 break; 1133 } 1134 map_abs(ABS_MISC); 1135 break; 1136 } 1137 1138 mapped: 1139 /* Mapping failed, bail out */ 1140 if (!bit) 1141 return; 1142 1143 if (device->driver->input_mapped && 1144 device->driver->input_mapped(device, hidinput, field, usage, 1145 &bit, &max) < 0) { 1146 /* 1147 * The driver indicated that no further generic handling 1148 * of the usage is desired. 1149 */ 1150 return; 1151 } 1152 1153 set_bit(usage->type, input->evbit); 1154 1155 /* 1156 * This part is *really* controversial: 1157 * - HID aims at being generic so we should do our best to export 1158 * all incoming events 1159 * - HID describes what events are, so there is no reason for ABS_X 1160 * to be mapped to ABS_Y 1161 * - HID is using *_MISC+N as a default value, but nothing prevents 1162 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1163 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1164 * processing) 1165 * 1166 * If devices still want to use this (at their own risk), they will 1167 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1168 * the default should be a reliable mapping. 1169 */ 1170 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1171 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1172 usage->code = find_next_zero_bit(bit, 1173 max + 1, 1174 usage->code); 1175 } else { 1176 device->status |= HID_STAT_DUP_DETECTED; 1177 goto ignore; 1178 } 1179 } 1180 1181 if (usage->code > max) 1182 goto ignore; 1183 1184 if (usage->type == EV_ABS) { 1185 1186 int a = field->logical_minimum; 1187 int b = field->logical_maximum; 1188 1189 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1190 a = field->logical_minimum = 0; 1191 b = field->logical_maximum = 255; 1192 } 1193 1194 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1195 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1196 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1197 1198 input_abs_set_res(input, usage->code, 1199 hidinput_calc_abs_res(field, usage->code)); 1200 1201 /* use a larger default input buffer for MT devices */ 1202 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1203 input_set_events_per_packet(input, 60); 1204 } 1205 1206 if (usage->type == EV_ABS && 1207 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1208 int i; 1209 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1210 input_set_abs_params(input, i, -1, 1, 0, 0); 1211 set_bit(i, input->absbit); 1212 } 1213 if (usage->hat_dir && !field->dpad) 1214 field->dpad = usage->code; 1215 } 1216 1217 /* for those devices which produce Consumer volume usage as relative, 1218 * we emulate pressing volumeup/volumedown appropriate number of times 1219 * in hidinput_hid_event() 1220 */ 1221 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1222 (usage->code == ABS_VOLUME)) { 1223 set_bit(KEY_VOLUMEUP, input->keybit); 1224 set_bit(KEY_VOLUMEDOWN, input->keybit); 1225 } 1226 1227 if (usage->type == EV_KEY) { 1228 set_bit(EV_MSC, input->evbit); 1229 set_bit(MSC_SCAN, input->mscbit); 1230 } 1231 1232 return; 1233 1234 ignore: 1235 usage->type = 0; 1236 usage->code = 0; 1237 } 1238 1239 static void hidinput_handle_scroll(struct hid_usage *usage, 1240 struct input_dev *input, 1241 __s32 value) 1242 { 1243 int code; 1244 int hi_res, lo_res; 1245 1246 if (value == 0) 1247 return; 1248 1249 if (usage->code == REL_WHEEL_HI_RES) 1250 code = REL_WHEEL; 1251 else 1252 code = REL_HWHEEL; 1253 1254 /* 1255 * Windows reports one wheel click as value 120. Where a high-res 1256 * scroll wheel is present, a fraction of 120 is reported instead. 1257 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1258 * adhere to the 120 expectation. 1259 */ 1260 hi_res = value * 120/usage->resolution_multiplier; 1261 1262 usage->wheel_accumulated += hi_res; 1263 lo_res = usage->wheel_accumulated/120; 1264 if (lo_res) 1265 usage->wheel_accumulated -= lo_res * 120; 1266 1267 input_event(input, EV_REL, code, lo_res); 1268 input_event(input, EV_REL, usage->code, hi_res); 1269 } 1270 1271 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1272 { 1273 struct input_dev *input; 1274 unsigned *quirks = &hid->quirks; 1275 1276 if (!usage->type) 1277 return; 1278 1279 if (usage->type == EV_PWR) { 1280 hidinput_update_battery(hid, value); 1281 return; 1282 } 1283 1284 if (!field->hidinput) 1285 return; 1286 1287 input = field->hidinput->input; 1288 1289 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1290 int hat_dir = usage->hat_dir; 1291 if (!hat_dir) 1292 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1293 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1294 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1295 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1296 return; 1297 } 1298 1299 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 1300 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1301 return; 1302 } 1303 1304 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 1305 if (value) { 1306 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1307 return; 1308 } 1309 input_event(input, usage->type, usage->code, 0); 1310 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1311 return; 1312 } 1313 1314 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 1315 int a = field->logical_minimum; 1316 int b = field->logical_maximum; 1317 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1318 } 1319 1320 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1321 dbg_hid("Maximum Effects - %d\n",value); 1322 return; 1323 } 1324 1325 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1326 dbg_hid("PID Pool Report\n"); 1327 return; 1328 } 1329 1330 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1331 return; 1332 1333 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1334 usage->code == REL_HWHEEL_HI_RES)) { 1335 hidinput_handle_scroll(usage, input, value); 1336 return; 1337 } 1338 1339 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1340 (usage->code == ABS_VOLUME)) { 1341 int count = abs(value); 1342 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1343 int i; 1344 1345 for (i = 0; i < count; i++) { 1346 input_event(input, EV_KEY, direction, 1); 1347 input_sync(input); 1348 input_event(input, EV_KEY, direction, 0); 1349 input_sync(input); 1350 } 1351 return; 1352 } 1353 1354 /* 1355 * Ignore out-of-range values as per HID specification, 1356 * section 5.10 and 6.2.25, when NULL state bit is present. 1357 * When it's not, clamp the value to match Microsoft's input 1358 * driver as mentioned in "Required HID usages for digitizers": 1359 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1360 * 1361 * The logical_minimum < logical_maximum check is done so that we 1362 * don't unintentionally discard values sent by devices which 1363 * don't specify logical min and max. 1364 */ 1365 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1366 (field->logical_minimum < field->logical_maximum)) { 1367 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1368 (value < field->logical_minimum || 1369 value > field->logical_maximum)) { 1370 dbg_hid("Ignoring out-of-range value %x\n", value); 1371 return; 1372 } 1373 value = clamp(value, 1374 field->logical_minimum, 1375 field->logical_maximum); 1376 } 1377 1378 /* 1379 * Ignore reports for absolute data if the data didn't change. This is 1380 * not only an optimization but also fixes 'dead' key reports. Some 1381 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1382 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1383 * can only have one of them physically available. The 'dead' keys 1384 * report constant 0. As all map to the same keycode, they'd confuse 1385 * the input layer. If we filter the 'dead' keys on the HID level, we 1386 * skip the keycode translation and only forward real events. 1387 */ 1388 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1389 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1390 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1391 usage->usage_index < field->maxusage && 1392 value == field->value[usage->usage_index]) 1393 return; 1394 1395 /* report the usage code as scancode if the key status has changed */ 1396 if (usage->type == EV_KEY && 1397 (!test_bit(usage->code, input->key)) == value) 1398 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1399 1400 input_event(input, usage->type, usage->code, value); 1401 1402 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1403 usage->type == EV_KEY && value) { 1404 input_sync(input); 1405 input_event(input, usage->type, usage->code, 0); 1406 } 1407 } 1408 1409 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1410 { 1411 struct hid_input *hidinput; 1412 1413 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1414 return; 1415 1416 list_for_each_entry(hidinput, &hid->inputs, list) 1417 input_sync(hidinput->input); 1418 } 1419 EXPORT_SYMBOL_GPL(hidinput_report_event); 1420 1421 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1422 { 1423 struct hid_report *report; 1424 int i, j; 1425 1426 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1427 for (i = 0; i < report->maxfield; i++) { 1428 *field = report->field[i]; 1429 for (j = 0; j < (*field)->maxusage; j++) 1430 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1431 return j; 1432 } 1433 } 1434 return -1; 1435 } 1436 EXPORT_SYMBOL_GPL(hidinput_find_field); 1437 1438 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1439 { 1440 struct hid_report *report; 1441 struct hid_field *field; 1442 int i, j; 1443 1444 list_for_each_entry(report, 1445 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1446 list) { 1447 for (i = 0; i < report->maxfield; i++) { 1448 field = report->field[i]; 1449 for (j = 0; j < field->maxusage; j++) 1450 if (field->usage[j].type == EV_LED) 1451 return field; 1452 } 1453 } 1454 return NULL; 1455 } 1456 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1457 1458 unsigned int hidinput_count_leds(struct hid_device *hid) 1459 { 1460 struct hid_report *report; 1461 struct hid_field *field; 1462 int i, j; 1463 unsigned int count = 0; 1464 1465 list_for_each_entry(report, 1466 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1467 list) { 1468 for (i = 0; i < report->maxfield; i++) { 1469 field = report->field[i]; 1470 for (j = 0; j < field->maxusage; j++) 1471 if (field->usage[j].type == EV_LED && 1472 field->value[j]) 1473 count += 1; 1474 } 1475 } 1476 return count; 1477 } 1478 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1479 1480 static void hidinput_led_worker(struct work_struct *work) 1481 { 1482 struct hid_device *hid = container_of(work, struct hid_device, 1483 led_work); 1484 struct hid_field *field; 1485 struct hid_report *report; 1486 int ret; 1487 u32 len; 1488 __u8 *buf; 1489 1490 field = hidinput_get_led_field(hid); 1491 if (!field) 1492 return; 1493 1494 /* 1495 * field->report is accessed unlocked regarding HID core. So there might 1496 * be another incoming SET-LED request from user-space, which changes 1497 * the LED state while we assemble our outgoing buffer. However, this 1498 * doesn't matter as hid_output_report() correctly converts it into a 1499 * boolean value no matter what information is currently set on the LED 1500 * field (even garbage). So the remote device will always get a valid 1501 * request. 1502 * And in case we send a wrong value, a next led worker is spawned 1503 * for every SET-LED request so the following worker will send the 1504 * correct value, guaranteed! 1505 */ 1506 1507 report = field->report; 1508 1509 /* use custom SET_REPORT request if possible (asynchronous) */ 1510 if (hid->ll_driver->request) 1511 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1512 1513 /* fall back to generic raw-output-report */ 1514 len = hid_report_len(report); 1515 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1516 if (!buf) 1517 return; 1518 1519 hid_output_report(report, buf); 1520 /* synchronous output report */ 1521 ret = hid_hw_output_report(hid, buf, len); 1522 if (ret == -ENOSYS) 1523 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1524 HID_REQ_SET_REPORT); 1525 kfree(buf); 1526 } 1527 1528 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1529 unsigned int code, int value) 1530 { 1531 struct hid_device *hid = input_get_drvdata(dev); 1532 struct hid_field *field; 1533 int offset; 1534 1535 if (type == EV_FF) 1536 return input_ff_event(dev, type, code, value); 1537 1538 if (type != EV_LED) 1539 return -1; 1540 1541 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1542 hid_warn(dev, "event field not found\n"); 1543 return -1; 1544 } 1545 1546 hid_set_field(field, offset, value); 1547 1548 schedule_work(&hid->led_work); 1549 return 0; 1550 } 1551 1552 static int hidinput_open(struct input_dev *dev) 1553 { 1554 struct hid_device *hid = input_get_drvdata(dev); 1555 1556 return hid_hw_open(hid); 1557 } 1558 1559 static void hidinput_close(struct input_dev *dev) 1560 { 1561 struct hid_device *hid = input_get_drvdata(dev); 1562 1563 hid_hw_close(hid); 1564 } 1565 1566 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1567 struct hid_report *report, bool use_logical_max) 1568 { 1569 struct hid_usage *usage; 1570 bool update_needed = false; 1571 bool get_report_completed = false; 1572 int i, j; 1573 1574 if (report->maxfield == 0) 1575 return false; 1576 1577 for (i = 0; i < report->maxfield; i++) { 1578 __s32 value = use_logical_max ? 1579 report->field[i]->logical_maximum : 1580 report->field[i]->logical_minimum; 1581 1582 /* There is no good reason for a Resolution 1583 * Multiplier to have a count other than 1. 1584 * Ignore that case. 1585 */ 1586 if (report->field[i]->report_count != 1) 1587 continue; 1588 1589 for (j = 0; j < report->field[i]->maxusage; j++) { 1590 usage = &report->field[i]->usage[j]; 1591 1592 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1593 continue; 1594 1595 /* 1596 * If we have more than one feature within this 1597 * report we need to fill in the bits from the 1598 * others before we can overwrite the ones for the 1599 * Resolution Multiplier. 1600 * 1601 * But if we're not allowed to read from the device, 1602 * we just bail. Such a device should not exist 1603 * anyway. 1604 */ 1605 if (!get_report_completed && report->maxfield > 1) { 1606 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) 1607 return update_needed; 1608 1609 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1610 hid_hw_wait(hid); 1611 get_report_completed = true; 1612 } 1613 1614 report->field[i]->value[j] = value; 1615 update_needed = true; 1616 } 1617 } 1618 1619 return update_needed; 1620 } 1621 1622 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1623 { 1624 struct hid_report_enum *rep_enum; 1625 struct hid_report *rep; 1626 int ret; 1627 1628 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1629 list_for_each_entry(rep, &rep_enum->report_list, list) { 1630 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1631 rep, true); 1632 1633 if (update_needed) { 1634 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1635 if (ret) { 1636 __hidinput_change_resolution_multipliers(hid, 1637 rep, false); 1638 return; 1639 } 1640 } 1641 } 1642 1643 /* refresh our structs */ 1644 hid_setup_resolution_multiplier(hid); 1645 } 1646 1647 static void report_features(struct hid_device *hid) 1648 { 1649 struct hid_driver *drv = hid->driver; 1650 struct hid_report_enum *rep_enum; 1651 struct hid_report *rep; 1652 struct hid_usage *usage; 1653 int i, j; 1654 1655 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1656 list_for_each_entry(rep, &rep_enum->report_list, list) 1657 for (i = 0; i < rep->maxfield; i++) { 1658 /* Ignore if report count is out of bounds. */ 1659 if (rep->field[i]->report_count < 1) 1660 continue; 1661 1662 for (j = 0; j < rep->field[i]->maxusage; j++) { 1663 usage = &rep->field[i]->usage[j]; 1664 1665 /* Verify if Battery Strength feature is available */ 1666 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1667 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1668 rep->field[i]); 1669 1670 if (drv->feature_mapping) 1671 drv->feature_mapping(hid, rep->field[i], usage); 1672 } 1673 } 1674 } 1675 1676 static struct hid_input *hidinput_allocate(struct hid_device *hid, 1677 unsigned int application) 1678 { 1679 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1680 struct input_dev *input_dev = input_allocate_device(); 1681 const char *suffix = NULL; 1682 size_t suffix_len, name_len; 1683 1684 if (!hidinput || !input_dev) 1685 goto fail; 1686 1687 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1688 hid->maxapplication > 1) { 1689 switch (application) { 1690 case HID_GD_KEYBOARD: 1691 suffix = "Keyboard"; 1692 break; 1693 case HID_GD_KEYPAD: 1694 suffix = "Keypad"; 1695 break; 1696 case HID_GD_MOUSE: 1697 suffix = "Mouse"; 1698 break; 1699 case HID_DG_STYLUS: 1700 suffix = "Pen"; 1701 break; 1702 case HID_DG_TOUCHSCREEN: 1703 suffix = "Touchscreen"; 1704 break; 1705 case HID_DG_TOUCHPAD: 1706 suffix = "Touchpad"; 1707 break; 1708 case HID_GD_SYSTEM_CONTROL: 1709 suffix = "System Control"; 1710 break; 1711 case HID_CP_CONSUMER_CONTROL: 1712 suffix = "Consumer Control"; 1713 break; 1714 case HID_GD_WIRELESS_RADIO_CTLS: 1715 suffix = "Wireless Radio Control"; 1716 break; 1717 case HID_GD_SYSTEM_MULTIAXIS: 1718 suffix = "System Multi Axis"; 1719 break; 1720 default: 1721 break; 1722 } 1723 } 1724 1725 if (suffix) { 1726 name_len = strlen(hid->name); 1727 suffix_len = strlen(suffix); 1728 if ((name_len < suffix_len) || 1729 strcmp(hid->name + name_len - suffix_len, suffix)) { 1730 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1731 hid->name, suffix); 1732 if (!hidinput->name) 1733 goto fail; 1734 } 1735 } 1736 1737 input_set_drvdata(input_dev, hid); 1738 input_dev->event = hidinput_input_event; 1739 input_dev->open = hidinput_open; 1740 input_dev->close = hidinput_close; 1741 input_dev->setkeycode = hidinput_setkeycode; 1742 input_dev->getkeycode = hidinput_getkeycode; 1743 1744 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1745 input_dev->phys = hid->phys; 1746 input_dev->uniq = hid->uniq; 1747 input_dev->id.bustype = hid->bus; 1748 input_dev->id.vendor = hid->vendor; 1749 input_dev->id.product = hid->product; 1750 input_dev->id.version = hid->version; 1751 input_dev->dev.parent = &hid->dev; 1752 1753 hidinput->input = input_dev; 1754 hidinput->application = application; 1755 list_add_tail(&hidinput->list, &hid->inputs); 1756 1757 INIT_LIST_HEAD(&hidinput->reports); 1758 1759 return hidinput; 1760 1761 fail: 1762 kfree(hidinput); 1763 input_free_device(input_dev); 1764 hid_err(hid, "Out of memory during hid input probe\n"); 1765 return NULL; 1766 } 1767 1768 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1769 { 1770 int i; 1771 unsigned long r = 0; 1772 1773 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1774 r |= hidinput->input->evbit[i]; 1775 1776 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1777 r |= hidinput->input->keybit[i]; 1778 1779 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1780 r |= hidinput->input->relbit[i]; 1781 1782 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1783 r |= hidinput->input->absbit[i]; 1784 1785 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1786 r |= hidinput->input->mscbit[i]; 1787 1788 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1789 r |= hidinput->input->ledbit[i]; 1790 1791 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1792 r |= hidinput->input->sndbit[i]; 1793 1794 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1795 r |= hidinput->input->ffbit[i]; 1796 1797 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1798 r |= hidinput->input->swbit[i]; 1799 1800 return !!r; 1801 } 1802 1803 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1804 struct hid_input *hidinput) 1805 { 1806 struct hid_report *report; 1807 int i, k; 1808 1809 list_del(&hidinput->list); 1810 input_free_device(hidinput->input); 1811 kfree(hidinput->name); 1812 1813 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1814 if (k == HID_OUTPUT_REPORT && 1815 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1816 continue; 1817 1818 list_for_each_entry(report, &hid->report_enum[k].report_list, 1819 list) { 1820 1821 for (i = 0; i < report->maxfield; i++) 1822 if (report->field[i]->hidinput == hidinput) 1823 report->field[i]->hidinput = NULL; 1824 } 1825 } 1826 1827 kfree(hidinput); 1828 } 1829 1830 static struct hid_input *hidinput_match(struct hid_report *report) 1831 { 1832 struct hid_device *hid = report->device; 1833 struct hid_input *hidinput; 1834 1835 list_for_each_entry(hidinput, &hid->inputs, list) { 1836 if (hidinput->report && 1837 hidinput->report->id == report->id) 1838 return hidinput; 1839 } 1840 1841 return NULL; 1842 } 1843 1844 static struct hid_input *hidinput_match_application(struct hid_report *report) 1845 { 1846 struct hid_device *hid = report->device; 1847 struct hid_input *hidinput; 1848 1849 list_for_each_entry(hidinput, &hid->inputs, list) { 1850 if (hidinput->application == report->application) 1851 return hidinput; 1852 } 1853 1854 return NULL; 1855 } 1856 1857 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1858 struct hid_report *report) 1859 { 1860 int i, j; 1861 1862 for (i = 0; i < report->maxfield; i++) 1863 for (j = 0; j < report->field[i]->maxusage; j++) 1864 hidinput_configure_usage(hidinput, report->field[i], 1865 report->field[i]->usage + j); 1866 } 1867 1868 /* 1869 * Register the input device; print a message. 1870 * Configure the input layer interface 1871 * Read all reports and initialize the absolute field values. 1872 */ 1873 1874 int hidinput_connect(struct hid_device *hid, unsigned int force) 1875 { 1876 struct hid_driver *drv = hid->driver; 1877 struct hid_report *report; 1878 struct hid_input *next, *hidinput = NULL; 1879 unsigned int application; 1880 int i, k; 1881 1882 INIT_LIST_HEAD(&hid->inputs); 1883 INIT_WORK(&hid->led_work, hidinput_led_worker); 1884 1885 hid->status &= ~HID_STAT_DUP_DETECTED; 1886 1887 if (!force) { 1888 for (i = 0; i < hid->maxcollection; i++) { 1889 struct hid_collection *col = &hid->collection[i]; 1890 if (col->type == HID_COLLECTION_APPLICATION || 1891 col->type == HID_COLLECTION_PHYSICAL) 1892 if (IS_INPUT_APPLICATION(col->usage)) 1893 break; 1894 } 1895 1896 if (i == hid->maxcollection) 1897 return -1; 1898 } 1899 1900 report_features(hid); 1901 1902 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1903 if (k == HID_OUTPUT_REPORT && 1904 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1905 continue; 1906 1907 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1908 1909 if (!report->maxfield) 1910 continue; 1911 1912 application = report->application; 1913 1914 /* 1915 * Find the previous hidinput report attached 1916 * to this report id. 1917 */ 1918 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1919 hidinput = hidinput_match(report); 1920 else if (hid->maxapplication > 1 && 1921 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1922 hidinput = hidinput_match_application(report); 1923 1924 if (!hidinput) { 1925 hidinput = hidinput_allocate(hid, application); 1926 if (!hidinput) 1927 goto out_unwind; 1928 } 1929 1930 hidinput_configure_usages(hidinput, report); 1931 1932 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1933 hidinput->report = report; 1934 1935 list_add_tail(&report->hidinput_list, 1936 &hidinput->reports); 1937 } 1938 } 1939 1940 hidinput_change_resolution_multipliers(hid); 1941 1942 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1943 if (drv->input_configured && 1944 drv->input_configured(hid, hidinput)) 1945 goto out_unwind; 1946 1947 if (!hidinput_has_been_populated(hidinput)) { 1948 /* no need to register an input device not populated */ 1949 hidinput_cleanup_hidinput(hid, hidinput); 1950 continue; 1951 } 1952 1953 if (input_register_device(hidinput->input)) 1954 goto out_unwind; 1955 hidinput->registered = true; 1956 } 1957 1958 if (list_empty(&hid->inputs)) { 1959 hid_err(hid, "No inputs registered, leaving\n"); 1960 goto out_unwind; 1961 } 1962 1963 if (hid->status & HID_STAT_DUP_DETECTED) 1964 hid_dbg(hid, 1965 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 1966 1967 return 0; 1968 1969 out_unwind: 1970 /* unwind the ones we already registered */ 1971 hidinput_disconnect(hid); 1972 1973 return -1; 1974 } 1975 EXPORT_SYMBOL_GPL(hidinput_connect); 1976 1977 void hidinput_disconnect(struct hid_device *hid) 1978 { 1979 struct hid_input *hidinput, *next; 1980 1981 hidinput_cleanup_battery(hid); 1982 1983 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1984 list_del(&hidinput->list); 1985 if (hidinput->registered) 1986 input_unregister_device(hidinput->input); 1987 else 1988 input_free_device(hidinput->input); 1989 kfree(hidinput->name); 1990 kfree(hidinput); 1991 } 1992 1993 /* led_work is spawned by input_dev callbacks, but doesn't access the 1994 * parent input_dev at all. Once all input devices are removed, we 1995 * know that led_work will never get restarted, so we can cancel it 1996 * synchronously and are safe. */ 1997 cancel_work_sync(&hid->led_work); 1998 } 1999 EXPORT_SYMBOL_GPL(hidinput_disconnect); 2000