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 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) { 542 dev->battery_capacity = capacity; 543 dev->battery_status = HID_BATTERY_REPORTED; 544 dev->battery_ratelimit_time = 545 ktime_add_ms(ktime_get_coarse(), 30 * 1000); 546 power_supply_changed(dev->battery); 547 } 548 } 549 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 550 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 551 struct hid_field *field) 552 { 553 return 0; 554 } 555 556 static void hidinput_cleanup_battery(struct hid_device *dev) 557 { 558 } 559 560 static void hidinput_update_battery(struct hid_device *dev, int value) 561 { 562 } 563 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 564 565 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 566 struct hid_usage *usage) 567 { 568 struct input_dev *input = hidinput->input; 569 struct hid_device *device = input_get_drvdata(input); 570 int max = 0, code; 571 unsigned long *bit = NULL; 572 573 field->hidinput = hidinput; 574 575 if (field->flags & HID_MAIN_ITEM_CONSTANT) 576 goto ignore; 577 578 /* Ignore if report count is out of bounds. */ 579 if (field->report_count < 1) 580 goto ignore; 581 582 /* only LED usages are supported in output fields */ 583 if (field->report_type == HID_OUTPUT_REPORT && 584 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 585 goto ignore; 586 } 587 588 if (device->driver->input_mapping) { 589 int ret = device->driver->input_mapping(device, hidinput, field, 590 usage, &bit, &max); 591 if (ret > 0) 592 goto mapped; 593 if (ret < 0) 594 goto ignore; 595 } 596 597 switch (usage->hid & HID_USAGE_PAGE) { 598 case HID_UP_UNDEFINED: 599 goto ignore; 600 601 case HID_UP_KEYBOARD: 602 set_bit(EV_REP, input->evbit); 603 604 if ((usage->hid & HID_USAGE) < 256) { 605 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 606 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 607 } else 608 map_key(KEY_UNKNOWN); 609 610 break; 611 612 case HID_UP_BUTTON: 613 code = ((usage->hid - 1) & HID_USAGE); 614 615 switch (field->application) { 616 case HID_GD_MOUSE: 617 case HID_GD_POINTER: code += BTN_MOUSE; break; 618 case HID_GD_JOYSTICK: 619 if (code <= 0xf) 620 code += BTN_JOYSTICK; 621 else 622 code += BTN_TRIGGER_HAPPY - 0x10; 623 break; 624 case HID_GD_GAMEPAD: 625 if (code <= 0xf) 626 code += BTN_GAMEPAD; 627 else 628 code += BTN_TRIGGER_HAPPY - 0x10; 629 break; 630 default: 631 switch (field->physical) { 632 case HID_GD_MOUSE: 633 case HID_GD_POINTER: code += BTN_MOUSE; break; 634 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 635 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 636 default: code += BTN_MISC; 637 } 638 } 639 640 map_key(code); 641 break; 642 643 case HID_UP_SIMULATION: 644 switch (usage->hid & 0xffff) { 645 case 0xba: map_abs(ABS_RUDDER); break; 646 case 0xbb: map_abs(ABS_THROTTLE); break; 647 case 0xc4: map_abs(ABS_GAS); break; 648 case 0xc5: map_abs(ABS_BRAKE); break; 649 case 0xc8: map_abs(ABS_WHEEL); break; 650 default: goto ignore; 651 } 652 break; 653 654 case HID_UP_GENDESK: 655 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 656 switch (usage->hid & 0xf) { 657 case 0x1: map_key_clear(KEY_POWER); break; 658 case 0x2: map_key_clear(KEY_SLEEP); break; 659 case 0x3: map_key_clear(KEY_WAKEUP); break; 660 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 661 case 0x5: map_key_clear(KEY_MENU); break; 662 case 0x6: map_key_clear(KEY_PROG1); break; 663 case 0x7: map_key_clear(KEY_HELP); break; 664 case 0x8: map_key_clear(KEY_EXIT); break; 665 case 0x9: map_key_clear(KEY_SELECT); break; 666 case 0xa: map_key_clear(KEY_RIGHT); break; 667 case 0xb: map_key_clear(KEY_LEFT); break; 668 case 0xc: map_key_clear(KEY_UP); break; 669 case 0xd: map_key_clear(KEY_DOWN); break; 670 case 0xe: map_key_clear(KEY_POWER2); break; 671 case 0xf: map_key_clear(KEY_RESTART); break; 672 default: goto unknown; 673 } 674 break; 675 } 676 677 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */ 678 switch (usage->hid & 0xf) { 679 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break; 680 default: goto ignore; 681 } 682 break; 683 } 684 685 /* 686 * Some lazy vendors declare 255 usages for System Control, 687 * leading to the creation of ABS_X|Y axis and too many others. 688 * It wouldn't be a problem if joydev doesn't consider the 689 * device as a joystick then. 690 */ 691 if (field->application == HID_GD_SYSTEM_CONTROL) 692 goto ignore; 693 694 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 695 switch (usage->hid) { 696 case HID_GD_UP: usage->hat_dir = 1; break; 697 case HID_GD_DOWN: usage->hat_dir = 5; break; 698 case HID_GD_RIGHT: usage->hat_dir = 3; break; 699 case HID_GD_LEFT: usage->hat_dir = 7; break; 700 default: goto unknown; 701 } 702 if (field->dpad) { 703 map_abs(field->dpad); 704 goto ignore; 705 } 706 map_abs(ABS_HAT0X); 707 break; 708 } 709 710 switch (usage->hid) { 711 /* These usage IDs map directly to the usage codes. */ 712 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 713 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 714 if (field->flags & HID_MAIN_ITEM_RELATIVE) 715 map_rel(usage->hid & 0xf); 716 else 717 map_abs_clear(usage->hid & 0xf); 718 break; 719 720 case HID_GD_WHEEL: 721 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 722 set_bit(REL_WHEEL, input->relbit); 723 map_rel(REL_WHEEL_HI_RES); 724 } else { 725 map_abs(usage->hid & 0xf); 726 } 727 break; 728 case HID_GD_SLIDER: case HID_GD_DIAL: 729 if (field->flags & HID_MAIN_ITEM_RELATIVE) 730 map_rel(usage->hid & 0xf); 731 else 732 map_abs(usage->hid & 0xf); 733 break; 734 735 case HID_GD_HATSWITCH: 736 usage->hat_min = field->logical_minimum; 737 usage->hat_max = field->logical_maximum; 738 map_abs(ABS_HAT0X); 739 break; 740 741 case HID_GD_START: map_key_clear(BTN_START); break; 742 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 743 744 case HID_GD_RFKILL_BTN: 745 /* MS wireless radio ctl extension, also check CA */ 746 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 747 map_key_clear(KEY_RFKILL); 748 /* We need to simulate the btn release */ 749 field->flags |= HID_MAIN_ITEM_RELATIVE; 750 break; 751 } 752 goto unknown; 753 754 default: goto unknown; 755 } 756 757 break; 758 759 case HID_UP_LED: 760 switch (usage->hid & 0xffff) { /* HID-Value: */ 761 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 762 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 763 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 764 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 765 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 766 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 767 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 768 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 769 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 770 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 771 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 772 773 default: goto ignore; 774 } 775 break; 776 777 case HID_UP_DIGITIZER: 778 if ((field->application & 0xff) == 0x01) /* Digitizer */ 779 __set_bit(INPUT_PROP_POINTER, input->propbit); 780 else if ((field->application & 0xff) == 0x02) /* Pen */ 781 __set_bit(INPUT_PROP_DIRECT, input->propbit); 782 783 switch (usage->hid & 0xff) { 784 case 0x00: /* Undefined */ 785 goto ignore; 786 787 case 0x30: /* TipPressure */ 788 if (!test_bit(BTN_TOUCH, input->keybit)) { 789 device->quirks |= HID_QUIRK_NOTOUCH; 790 set_bit(EV_KEY, input->evbit); 791 set_bit(BTN_TOUCH, input->keybit); 792 } 793 map_abs_clear(ABS_PRESSURE); 794 break; 795 796 case 0x32: /* InRange */ 797 switch (field->physical & 0xff) { 798 case 0x21: map_key(BTN_TOOL_MOUSE); break; 799 case 0x22: map_key(BTN_TOOL_FINGER); break; 800 default: map_key(BTN_TOOL_PEN); break; 801 } 802 break; 803 804 case 0x3b: /* Battery Strength */ 805 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 806 usage->type = EV_PWR; 807 return; 808 809 case 0x3c: /* Invert */ 810 map_key_clear(BTN_TOOL_RUBBER); 811 break; 812 813 case 0x3d: /* X Tilt */ 814 map_abs_clear(ABS_TILT_X); 815 break; 816 817 case 0x3e: /* Y Tilt */ 818 map_abs_clear(ABS_TILT_Y); 819 break; 820 821 case 0x33: /* Touch */ 822 case 0x42: /* TipSwitch */ 823 case 0x43: /* TipSwitch2 */ 824 device->quirks &= ~HID_QUIRK_NOTOUCH; 825 map_key_clear(BTN_TOUCH); 826 break; 827 828 case 0x44: /* BarrelSwitch */ 829 map_key_clear(BTN_STYLUS); 830 break; 831 832 case 0x45: /* ERASER */ 833 /* 834 * This event is reported when eraser tip touches the surface. 835 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when 836 * tool gets in proximity. 837 */ 838 map_key_clear(BTN_TOUCH); 839 break; 840 841 case 0x46: /* TabletPick */ 842 case 0x5a: /* SecondaryBarrelSwitch */ 843 map_key_clear(BTN_STYLUS2); 844 break; 845 846 case 0x5b: /* TransducerSerialNumber */ 847 usage->type = EV_MSC; 848 usage->code = MSC_SERIAL; 849 bit = input->mscbit; 850 max = MSC_MAX; 851 break; 852 853 default: goto unknown; 854 } 855 break; 856 857 case HID_UP_TELEPHONY: 858 switch (usage->hid & HID_USAGE) { 859 case 0x2f: map_key_clear(KEY_MICMUTE); break; 860 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 861 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 862 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 863 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 864 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 865 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 866 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 867 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 868 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 869 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 870 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 871 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 872 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 873 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 874 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 875 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 876 default: goto ignore; 877 } 878 break; 879 880 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 881 switch (usage->hid & HID_USAGE) { 882 case 0x000: goto ignore; 883 case 0x030: map_key_clear(KEY_POWER); break; 884 case 0x031: map_key_clear(KEY_RESTART); break; 885 case 0x032: map_key_clear(KEY_SLEEP); break; 886 case 0x034: map_key_clear(KEY_SLEEP); break; 887 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 888 case 0x036: map_key_clear(BTN_MISC); break; 889 890 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 891 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 892 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 893 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 894 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 895 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 896 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 897 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 898 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 899 900 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 901 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 902 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 903 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 904 case 0x069: map_key_clear(KEY_RED); break; 905 case 0x06a: map_key_clear(KEY_GREEN); break; 906 case 0x06b: map_key_clear(KEY_BLUE); break; 907 case 0x06c: map_key_clear(KEY_YELLOW); break; 908 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break; 909 910 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 911 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 912 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 913 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 914 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 915 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 916 917 case 0x079: map_key_clear(KEY_KBDILLUMUP); break; 918 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break; 919 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break; 920 921 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 922 case 0x083: map_key_clear(KEY_LAST); break; 923 case 0x084: map_key_clear(KEY_ENTER); break; 924 case 0x088: map_key_clear(KEY_PC); break; 925 case 0x089: map_key_clear(KEY_TV); break; 926 case 0x08a: map_key_clear(KEY_WWW); break; 927 case 0x08b: map_key_clear(KEY_DVD); break; 928 case 0x08c: map_key_clear(KEY_PHONE); break; 929 case 0x08d: map_key_clear(KEY_PROGRAM); break; 930 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 931 case 0x08f: map_key_clear(KEY_GAMES); break; 932 case 0x090: map_key_clear(KEY_MEMO); break; 933 case 0x091: map_key_clear(KEY_CD); break; 934 case 0x092: map_key_clear(KEY_VCR); break; 935 case 0x093: map_key_clear(KEY_TUNER); break; 936 case 0x094: map_key_clear(KEY_EXIT); break; 937 case 0x095: map_key_clear(KEY_HELP); break; 938 case 0x096: map_key_clear(KEY_TAPE); break; 939 case 0x097: map_key_clear(KEY_TV2); break; 940 case 0x098: map_key_clear(KEY_SAT); break; 941 case 0x09a: map_key_clear(KEY_PVR); break; 942 943 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 944 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 945 case 0x0a0: map_key_clear(KEY_VCR2); break; 946 947 case 0x0b0: map_key_clear(KEY_PLAY); break; 948 case 0x0b1: map_key_clear(KEY_PAUSE); break; 949 case 0x0b2: map_key_clear(KEY_RECORD); break; 950 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 951 case 0x0b4: map_key_clear(KEY_REWIND); break; 952 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 953 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 954 case 0x0b7: map_key_clear(KEY_STOPCD); break; 955 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 956 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 957 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 958 case 0x0bf: map_key_clear(KEY_SLOW); break; 959 960 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 961 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 962 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 963 case 0x0e2: map_key_clear(KEY_MUTE); break; 964 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 965 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 966 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 967 case 0x0f5: map_key_clear(KEY_SLOW); break; 968 969 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 970 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 971 case 0x183: map_key_clear(KEY_CONFIG); break; 972 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 973 case 0x185: map_key_clear(KEY_EDITOR); break; 974 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 975 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 976 case 0x188: map_key_clear(KEY_PRESENTATION); break; 977 case 0x189: map_key_clear(KEY_DATABASE); break; 978 case 0x18a: map_key_clear(KEY_MAIL); break; 979 case 0x18b: map_key_clear(KEY_NEWS); break; 980 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 981 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 982 case 0x18e: map_key_clear(KEY_CALENDAR); break; 983 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 984 case 0x190: map_key_clear(KEY_JOURNAL); break; 985 case 0x191: map_key_clear(KEY_FINANCE); break; 986 case 0x192: map_key_clear(KEY_CALC); break; 987 case 0x193: map_key_clear(KEY_PLAYER); break; 988 case 0x194: map_key_clear(KEY_FILE); break; 989 case 0x196: map_key_clear(KEY_WWW); break; 990 case 0x199: map_key_clear(KEY_CHAT); break; 991 case 0x19c: map_key_clear(KEY_LOGOFF); break; 992 case 0x19e: map_key_clear(KEY_COFFEE); break; 993 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 994 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 995 case 0x1a3: map_key_clear(KEY_NEXT); break; 996 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 997 case 0x1a6: map_key_clear(KEY_HELP); break; 998 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 999 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 1000 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 1001 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 1002 case 0x1b4: map_key_clear(KEY_FILE); break; 1003 case 0x1b6: map_key_clear(KEY_IMAGES); break; 1004 case 0x1b7: map_key_clear(KEY_AUDIO); break; 1005 case 0x1b8: map_key_clear(KEY_VIDEO); break; 1006 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1007 case 0x1bd: map_key_clear(KEY_INFO); break; 1008 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1009 case 0x201: map_key_clear(KEY_NEW); break; 1010 case 0x202: map_key_clear(KEY_OPEN); break; 1011 case 0x203: map_key_clear(KEY_CLOSE); break; 1012 case 0x204: map_key_clear(KEY_EXIT); break; 1013 case 0x207: map_key_clear(KEY_SAVE); break; 1014 case 0x208: map_key_clear(KEY_PRINT); break; 1015 case 0x209: map_key_clear(KEY_PROPS); break; 1016 case 0x21a: map_key_clear(KEY_UNDO); break; 1017 case 0x21b: map_key_clear(KEY_COPY); break; 1018 case 0x21c: map_key_clear(KEY_CUT); break; 1019 case 0x21d: map_key_clear(KEY_PASTE); break; 1020 case 0x21f: map_key_clear(KEY_FIND); break; 1021 case 0x221: map_key_clear(KEY_SEARCH); break; 1022 case 0x222: map_key_clear(KEY_GOTO); break; 1023 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1024 case 0x224: map_key_clear(KEY_BACK); break; 1025 case 0x225: map_key_clear(KEY_FORWARD); break; 1026 case 0x226: map_key_clear(KEY_STOP); break; 1027 case 0x227: map_key_clear(KEY_REFRESH); break; 1028 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1029 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1030 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1031 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1032 case 0x232: map_key_clear(KEY_FULL_SCREEN); break; 1033 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1034 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1035 case 0x238: /* AC Pan */ 1036 set_bit(REL_HWHEEL, input->relbit); 1037 map_rel(REL_HWHEEL_HI_RES); 1038 break; 1039 case 0x23d: map_key_clear(KEY_EDIT); break; 1040 case 0x25f: map_key_clear(KEY_CANCEL); break; 1041 case 0x269: map_key_clear(KEY_INSERT); break; 1042 case 0x26a: map_key_clear(KEY_DELETE); break; 1043 case 0x279: map_key_clear(KEY_REDO); break; 1044 1045 case 0x289: map_key_clear(KEY_REPLY); break; 1046 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1047 case 0x28c: map_key_clear(KEY_SEND); break; 1048 1049 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break; 1050 1051 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1052 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1053 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1054 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1055 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1056 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1057 1058 case 0x29f: map_key_clear(KEY_SCALE); break; 1059 1060 default: map_key_clear(KEY_UNKNOWN); 1061 } 1062 break; 1063 1064 case HID_UP_GENDEVCTRLS: 1065 switch (usage->hid) { 1066 case HID_DC_BATTERYSTRENGTH: 1067 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 1068 usage->type = EV_PWR; 1069 return; 1070 } 1071 goto unknown; 1072 1073 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1074 set_bit(EV_REP, input->evbit); 1075 switch (usage->hid & HID_USAGE) { 1076 case 0x021: map_key_clear(KEY_PRINT); break; 1077 case 0x070: map_key_clear(KEY_HP); break; 1078 case 0x071: map_key_clear(KEY_CAMERA); break; 1079 case 0x072: map_key_clear(KEY_SOUND); break; 1080 case 0x073: map_key_clear(KEY_QUESTION); break; 1081 case 0x080: map_key_clear(KEY_EMAIL); break; 1082 case 0x081: map_key_clear(KEY_CHAT); break; 1083 case 0x082: map_key_clear(KEY_SEARCH); break; 1084 case 0x083: map_key_clear(KEY_CONNECT); break; 1085 case 0x084: map_key_clear(KEY_FINANCE); break; 1086 case 0x085: map_key_clear(KEY_SPORT); break; 1087 case 0x086: map_key_clear(KEY_SHOP); break; 1088 default: goto ignore; 1089 } 1090 break; 1091 1092 case HID_UP_HPVENDOR2: 1093 set_bit(EV_REP, input->evbit); 1094 switch (usage->hid & HID_USAGE) { 1095 case 0x001: map_key_clear(KEY_MICMUTE); break; 1096 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1097 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1098 default: goto ignore; 1099 } 1100 break; 1101 1102 case HID_UP_MSVENDOR: 1103 goto ignore; 1104 1105 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1106 set_bit(EV_REP, input->evbit); 1107 goto ignore; 1108 1109 case HID_UP_LOGIVENDOR: 1110 /* intentional fallback */ 1111 case HID_UP_LOGIVENDOR2: 1112 /* intentional fallback */ 1113 case HID_UP_LOGIVENDOR3: 1114 goto ignore; 1115 1116 case HID_UP_PID: 1117 switch (usage->hid & HID_USAGE) { 1118 case 0xa4: map_key_clear(BTN_DEAD); break; 1119 default: goto ignore; 1120 } 1121 break; 1122 1123 default: 1124 unknown: 1125 if (field->report_size == 1) { 1126 if (field->report->type == HID_OUTPUT_REPORT) { 1127 map_led(LED_MISC); 1128 break; 1129 } 1130 map_key(BTN_MISC); 1131 break; 1132 } 1133 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1134 map_rel(REL_MISC); 1135 break; 1136 } 1137 map_abs(ABS_MISC); 1138 break; 1139 } 1140 1141 mapped: 1142 /* Mapping failed, bail out */ 1143 if (!bit) 1144 return; 1145 1146 if (device->driver->input_mapped && 1147 device->driver->input_mapped(device, hidinput, field, usage, 1148 &bit, &max) < 0) { 1149 /* 1150 * The driver indicated that no further generic handling 1151 * of the usage is desired. 1152 */ 1153 return; 1154 } 1155 1156 set_bit(usage->type, input->evbit); 1157 1158 /* 1159 * This part is *really* controversial: 1160 * - HID aims at being generic so we should do our best to export 1161 * all incoming events 1162 * - HID describes what events are, so there is no reason for ABS_X 1163 * to be mapped to ABS_Y 1164 * - HID is using *_MISC+N as a default value, but nothing prevents 1165 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1166 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1167 * processing) 1168 * 1169 * If devices still want to use this (at their own risk), they will 1170 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1171 * the default should be a reliable mapping. 1172 */ 1173 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1174 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1175 usage->code = find_next_zero_bit(bit, 1176 max + 1, 1177 usage->code); 1178 } else { 1179 device->status |= HID_STAT_DUP_DETECTED; 1180 goto ignore; 1181 } 1182 } 1183 1184 if (usage->code > max) 1185 goto ignore; 1186 1187 if (usage->type == EV_ABS) { 1188 1189 int a = field->logical_minimum; 1190 int b = field->logical_maximum; 1191 1192 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1193 a = field->logical_minimum = 0; 1194 b = field->logical_maximum = 255; 1195 } 1196 1197 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1198 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1199 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1200 1201 input_abs_set_res(input, usage->code, 1202 hidinput_calc_abs_res(field, usage->code)); 1203 1204 /* use a larger default input buffer for MT devices */ 1205 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1206 input_set_events_per_packet(input, 60); 1207 } 1208 1209 if (usage->type == EV_ABS && 1210 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1211 int i; 1212 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1213 input_set_abs_params(input, i, -1, 1, 0, 0); 1214 set_bit(i, input->absbit); 1215 } 1216 if (usage->hat_dir && !field->dpad) 1217 field->dpad = usage->code; 1218 } 1219 1220 /* for those devices which produce Consumer volume usage as relative, 1221 * we emulate pressing volumeup/volumedown appropriate number of times 1222 * in hidinput_hid_event() 1223 */ 1224 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1225 (usage->code == ABS_VOLUME)) { 1226 set_bit(KEY_VOLUMEUP, input->keybit); 1227 set_bit(KEY_VOLUMEDOWN, input->keybit); 1228 } 1229 1230 if (usage->type == EV_KEY) { 1231 set_bit(EV_MSC, input->evbit); 1232 set_bit(MSC_SCAN, input->mscbit); 1233 } 1234 1235 return; 1236 1237 ignore: 1238 usage->type = 0; 1239 usage->code = 0; 1240 } 1241 1242 static void hidinput_handle_scroll(struct hid_usage *usage, 1243 struct input_dev *input, 1244 __s32 value) 1245 { 1246 int code; 1247 int hi_res, lo_res; 1248 1249 if (value == 0) 1250 return; 1251 1252 if (usage->code == REL_WHEEL_HI_RES) 1253 code = REL_WHEEL; 1254 else 1255 code = REL_HWHEEL; 1256 1257 /* 1258 * Windows reports one wheel click as value 120. Where a high-res 1259 * scroll wheel is present, a fraction of 120 is reported instead. 1260 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1261 * adhere to the 120 expectation. 1262 */ 1263 hi_res = value * 120/usage->resolution_multiplier; 1264 1265 usage->wheel_accumulated += hi_res; 1266 lo_res = usage->wheel_accumulated/120; 1267 if (lo_res) 1268 usage->wheel_accumulated -= lo_res * 120; 1269 1270 input_event(input, EV_REL, code, lo_res); 1271 input_event(input, EV_REL, usage->code, hi_res); 1272 } 1273 1274 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1275 { 1276 struct input_dev *input; 1277 unsigned *quirks = &hid->quirks; 1278 1279 if (!usage->type) 1280 return; 1281 1282 if (usage->type == EV_PWR) { 1283 hidinput_update_battery(hid, value); 1284 return; 1285 } 1286 1287 if (!field->hidinput) 1288 return; 1289 1290 input = field->hidinput->input; 1291 1292 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1293 int hat_dir = usage->hat_dir; 1294 if (!hat_dir) 1295 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1296 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1297 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1298 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1299 return; 1300 } 1301 1302 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 1303 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1304 return; 1305 } 1306 1307 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 1308 if (value) { 1309 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1310 return; 1311 } 1312 input_event(input, usage->type, usage->code, 0); 1313 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1314 return; 1315 } 1316 1317 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 1318 int a = field->logical_minimum; 1319 int b = field->logical_maximum; 1320 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1321 } 1322 1323 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1324 dbg_hid("Maximum Effects - %d\n",value); 1325 return; 1326 } 1327 1328 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1329 dbg_hid("PID Pool Report\n"); 1330 return; 1331 } 1332 1333 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1334 return; 1335 1336 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1337 usage->code == REL_HWHEEL_HI_RES)) { 1338 hidinput_handle_scroll(usage, input, value); 1339 return; 1340 } 1341 1342 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1343 (usage->code == ABS_VOLUME)) { 1344 int count = abs(value); 1345 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1346 int i; 1347 1348 for (i = 0; i < count; i++) { 1349 input_event(input, EV_KEY, direction, 1); 1350 input_sync(input); 1351 input_event(input, EV_KEY, direction, 0); 1352 input_sync(input); 1353 } 1354 return; 1355 } 1356 1357 /* 1358 * Ignore out-of-range values as per HID specification, 1359 * section 5.10 and 6.2.25, when NULL state bit is present. 1360 * When it's not, clamp the value to match Microsoft's input 1361 * driver as mentioned in "Required HID usages for digitizers": 1362 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1363 * 1364 * The logical_minimum < logical_maximum check is done so that we 1365 * don't unintentionally discard values sent by devices which 1366 * don't specify logical min and max. 1367 */ 1368 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1369 (field->logical_minimum < field->logical_maximum)) { 1370 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1371 (value < field->logical_minimum || 1372 value > field->logical_maximum)) { 1373 dbg_hid("Ignoring out-of-range value %x\n", value); 1374 return; 1375 } 1376 value = clamp(value, 1377 field->logical_minimum, 1378 field->logical_maximum); 1379 } 1380 1381 /* 1382 * Ignore reports for absolute data if the data didn't change. This is 1383 * not only an optimization but also fixes 'dead' key reports. Some 1384 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1385 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1386 * can only have one of them physically available. The 'dead' keys 1387 * report constant 0. As all map to the same keycode, they'd confuse 1388 * the input layer. If we filter the 'dead' keys on the HID level, we 1389 * skip the keycode translation and only forward real events. 1390 */ 1391 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1392 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1393 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1394 usage->usage_index < field->maxusage && 1395 value == field->value[usage->usage_index]) 1396 return; 1397 1398 /* report the usage code as scancode if the key status has changed */ 1399 if (usage->type == EV_KEY && 1400 (!test_bit(usage->code, input->key)) == value) 1401 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1402 1403 input_event(input, usage->type, usage->code, value); 1404 1405 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1406 usage->type == EV_KEY && value) { 1407 input_sync(input); 1408 input_event(input, usage->type, usage->code, 0); 1409 } 1410 } 1411 1412 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1413 { 1414 struct hid_input *hidinput; 1415 1416 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1417 return; 1418 1419 list_for_each_entry(hidinput, &hid->inputs, list) 1420 input_sync(hidinput->input); 1421 } 1422 EXPORT_SYMBOL_GPL(hidinput_report_event); 1423 1424 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1425 { 1426 struct hid_report *report; 1427 int i, j; 1428 1429 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1430 for (i = 0; i < report->maxfield; i++) { 1431 *field = report->field[i]; 1432 for (j = 0; j < (*field)->maxusage; j++) 1433 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1434 return j; 1435 } 1436 } 1437 return -1; 1438 } 1439 EXPORT_SYMBOL_GPL(hidinput_find_field); 1440 1441 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1442 { 1443 struct hid_report *report; 1444 struct hid_field *field; 1445 int i, j; 1446 1447 list_for_each_entry(report, 1448 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1449 list) { 1450 for (i = 0; i < report->maxfield; i++) { 1451 field = report->field[i]; 1452 for (j = 0; j < field->maxusage; j++) 1453 if (field->usage[j].type == EV_LED) 1454 return field; 1455 } 1456 } 1457 return NULL; 1458 } 1459 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1460 1461 unsigned int hidinput_count_leds(struct hid_device *hid) 1462 { 1463 struct hid_report *report; 1464 struct hid_field *field; 1465 int i, j; 1466 unsigned int count = 0; 1467 1468 list_for_each_entry(report, 1469 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1470 list) { 1471 for (i = 0; i < report->maxfield; i++) { 1472 field = report->field[i]; 1473 for (j = 0; j < field->maxusage; j++) 1474 if (field->usage[j].type == EV_LED && 1475 field->value[j]) 1476 count += 1; 1477 } 1478 } 1479 return count; 1480 } 1481 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1482 1483 static void hidinput_led_worker(struct work_struct *work) 1484 { 1485 struct hid_device *hid = container_of(work, struct hid_device, 1486 led_work); 1487 struct hid_field *field; 1488 struct hid_report *report; 1489 int ret; 1490 u32 len; 1491 __u8 *buf; 1492 1493 field = hidinput_get_led_field(hid); 1494 if (!field) 1495 return; 1496 1497 /* 1498 * field->report is accessed unlocked regarding HID core. So there might 1499 * be another incoming SET-LED request from user-space, which changes 1500 * the LED state while we assemble our outgoing buffer. However, this 1501 * doesn't matter as hid_output_report() correctly converts it into a 1502 * boolean value no matter what information is currently set on the LED 1503 * field (even garbage). So the remote device will always get a valid 1504 * request. 1505 * And in case we send a wrong value, a next led worker is spawned 1506 * for every SET-LED request so the following worker will send the 1507 * correct value, guaranteed! 1508 */ 1509 1510 report = field->report; 1511 1512 /* use custom SET_REPORT request if possible (asynchronous) */ 1513 if (hid->ll_driver->request) 1514 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1515 1516 /* fall back to generic raw-output-report */ 1517 len = hid_report_len(report); 1518 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1519 if (!buf) 1520 return; 1521 1522 hid_output_report(report, buf); 1523 /* synchronous output report */ 1524 ret = hid_hw_output_report(hid, buf, len); 1525 if (ret == -ENOSYS) 1526 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1527 HID_REQ_SET_REPORT); 1528 kfree(buf); 1529 } 1530 1531 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1532 unsigned int code, int value) 1533 { 1534 struct hid_device *hid = input_get_drvdata(dev); 1535 struct hid_field *field; 1536 int offset; 1537 1538 if (type == EV_FF) 1539 return input_ff_event(dev, type, code, value); 1540 1541 if (type != EV_LED) 1542 return -1; 1543 1544 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1545 hid_warn(dev, "event field not found\n"); 1546 return -1; 1547 } 1548 1549 hid_set_field(field, offset, value); 1550 1551 schedule_work(&hid->led_work); 1552 return 0; 1553 } 1554 1555 static int hidinput_open(struct input_dev *dev) 1556 { 1557 struct hid_device *hid = input_get_drvdata(dev); 1558 1559 return hid_hw_open(hid); 1560 } 1561 1562 static void hidinput_close(struct input_dev *dev) 1563 { 1564 struct hid_device *hid = input_get_drvdata(dev); 1565 1566 hid_hw_close(hid); 1567 } 1568 1569 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1570 struct hid_report *report, bool use_logical_max) 1571 { 1572 struct hid_usage *usage; 1573 bool update_needed = false; 1574 bool get_report_completed = false; 1575 int i, j; 1576 1577 if (report->maxfield == 0) 1578 return false; 1579 1580 for (i = 0; i < report->maxfield; i++) { 1581 __s32 value = use_logical_max ? 1582 report->field[i]->logical_maximum : 1583 report->field[i]->logical_minimum; 1584 1585 /* There is no good reason for a Resolution 1586 * Multiplier to have a count other than 1. 1587 * Ignore that case. 1588 */ 1589 if (report->field[i]->report_count != 1) 1590 continue; 1591 1592 for (j = 0; j < report->field[i]->maxusage; j++) { 1593 usage = &report->field[i]->usage[j]; 1594 1595 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1596 continue; 1597 1598 /* 1599 * If we have more than one feature within this 1600 * report we need to fill in the bits from the 1601 * others before we can overwrite the ones for the 1602 * Resolution Multiplier. 1603 * 1604 * But if we're not allowed to read from the device, 1605 * we just bail. Such a device should not exist 1606 * anyway. 1607 */ 1608 if (!get_report_completed && report->maxfield > 1) { 1609 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) 1610 return update_needed; 1611 1612 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1613 hid_hw_wait(hid); 1614 get_report_completed = true; 1615 } 1616 1617 report->field[i]->value[j] = value; 1618 update_needed = true; 1619 } 1620 } 1621 1622 return update_needed; 1623 } 1624 1625 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1626 { 1627 struct hid_report_enum *rep_enum; 1628 struct hid_report *rep; 1629 int ret; 1630 1631 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1632 list_for_each_entry(rep, &rep_enum->report_list, list) { 1633 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1634 rep, true); 1635 1636 if (update_needed) { 1637 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1638 if (ret) { 1639 __hidinput_change_resolution_multipliers(hid, 1640 rep, false); 1641 return; 1642 } 1643 } 1644 } 1645 1646 /* refresh our structs */ 1647 hid_setup_resolution_multiplier(hid); 1648 } 1649 1650 static void report_features(struct hid_device *hid) 1651 { 1652 struct hid_driver *drv = hid->driver; 1653 struct hid_report_enum *rep_enum; 1654 struct hid_report *rep; 1655 struct hid_usage *usage; 1656 int i, j; 1657 1658 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1659 list_for_each_entry(rep, &rep_enum->report_list, list) 1660 for (i = 0; i < rep->maxfield; i++) { 1661 /* Ignore if report count is out of bounds. */ 1662 if (rep->field[i]->report_count < 1) 1663 continue; 1664 1665 for (j = 0; j < rep->field[i]->maxusage; j++) { 1666 usage = &rep->field[i]->usage[j]; 1667 1668 /* Verify if Battery Strength feature is available */ 1669 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1670 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1671 rep->field[i]); 1672 1673 if (drv->feature_mapping) 1674 drv->feature_mapping(hid, rep->field[i], usage); 1675 } 1676 } 1677 } 1678 1679 static struct hid_input *hidinput_allocate(struct hid_device *hid, 1680 unsigned int application) 1681 { 1682 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1683 struct input_dev *input_dev = input_allocate_device(); 1684 const char *suffix = NULL; 1685 size_t suffix_len, name_len; 1686 1687 if (!hidinput || !input_dev) 1688 goto fail; 1689 1690 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1691 hid->maxapplication > 1) { 1692 switch (application) { 1693 case HID_GD_KEYBOARD: 1694 suffix = "Keyboard"; 1695 break; 1696 case HID_GD_KEYPAD: 1697 suffix = "Keypad"; 1698 break; 1699 case HID_GD_MOUSE: 1700 suffix = "Mouse"; 1701 break; 1702 case HID_DG_STYLUS: 1703 suffix = "Pen"; 1704 break; 1705 case HID_DG_TOUCHSCREEN: 1706 suffix = "Touchscreen"; 1707 break; 1708 case HID_DG_TOUCHPAD: 1709 suffix = "Touchpad"; 1710 break; 1711 case HID_GD_SYSTEM_CONTROL: 1712 suffix = "System Control"; 1713 break; 1714 case HID_CP_CONSUMER_CONTROL: 1715 suffix = "Consumer Control"; 1716 break; 1717 case HID_GD_WIRELESS_RADIO_CTLS: 1718 suffix = "Wireless Radio Control"; 1719 break; 1720 case HID_GD_SYSTEM_MULTIAXIS: 1721 suffix = "System Multi Axis"; 1722 break; 1723 default: 1724 break; 1725 } 1726 } 1727 1728 if (suffix) { 1729 name_len = strlen(hid->name); 1730 suffix_len = strlen(suffix); 1731 if ((name_len < suffix_len) || 1732 strcmp(hid->name + name_len - suffix_len, suffix)) { 1733 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1734 hid->name, suffix); 1735 if (!hidinput->name) 1736 goto fail; 1737 } 1738 } 1739 1740 input_set_drvdata(input_dev, hid); 1741 input_dev->event = hidinput_input_event; 1742 input_dev->open = hidinput_open; 1743 input_dev->close = hidinput_close; 1744 input_dev->setkeycode = hidinput_setkeycode; 1745 input_dev->getkeycode = hidinput_getkeycode; 1746 1747 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1748 input_dev->phys = hid->phys; 1749 input_dev->uniq = hid->uniq; 1750 input_dev->id.bustype = hid->bus; 1751 input_dev->id.vendor = hid->vendor; 1752 input_dev->id.product = hid->product; 1753 input_dev->id.version = hid->version; 1754 input_dev->dev.parent = &hid->dev; 1755 1756 hidinput->input = input_dev; 1757 hidinput->application = application; 1758 list_add_tail(&hidinput->list, &hid->inputs); 1759 1760 INIT_LIST_HEAD(&hidinput->reports); 1761 1762 return hidinput; 1763 1764 fail: 1765 kfree(hidinput); 1766 input_free_device(input_dev); 1767 hid_err(hid, "Out of memory during hid input probe\n"); 1768 return NULL; 1769 } 1770 1771 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1772 { 1773 int i; 1774 unsigned long r = 0; 1775 1776 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1777 r |= hidinput->input->evbit[i]; 1778 1779 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1780 r |= hidinput->input->keybit[i]; 1781 1782 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1783 r |= hidinput->input->relbit[i]; 1784 1785 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1786 r |= hidinput->input->absbit[i]; 1787 1788 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1789 r |= hidinput->input->mscbit[i]; 1790 1791 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1792 r |= hidinput->input->ledbit[i]; 1793 1794 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1795 r |= hidinput->input->sndbit[i]; 1796 1797 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1798 r |= hidinput->input->ffbit[i]; 1799 1800 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1801 r |= hidinput->input->swbit[i]; 1802 1803 return !!r; 1804 } 1805 1806 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1807 struct hid_input *hidinput) 1808 { 1809 struct hid_report *report; 1810 int i, k; 1811 1812 list_del(&hidinput->list); 1813 input_free_device(hidinput->input); 1814 kfree(hidinput->name); 1815 1816 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1817 if (k == HID_OUTPUT_REPORT && 1818 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1819 continue; 1820 1821 list_for_each_entry(report, &hid->report_enum[k].report_list, 1822 list) { 1823 1824 for (i = 0; i < report->maxfield; i++) 1825 if (report->field[i]->hidinput == hidinput) 1826 report->field[i]->hidinput = NULL; 1827 } 1828 } 1829 1830 kfree(hidinput); 1831 } 1832 1833 static struct hid_input *hidinput_match(struct hid_report *report) 1834 { 1835 struct hid_device *hid = report->device; 1836 struct hid_input *hidinput; 1837 1838 list_for_each_entry(hidinput, &hid->inputs, list) { 1839 if (hidinput->report && 1840 hidinput->report->id == report->id) 1841 return hidinput; 1842 } 1843 1844 return NULL; 1845 } 1846 1847 static struct hid_input *hidinput_match_application(struct hid_report *report) 1848 { 1849 struct hid_device *hid = report->device; 1850 struct hid_input *hidinput; 1851 1852 list_for_each_entry(hidinput, &hid->inputs, list) { 1853 if (hidinput->application == report->application) 1854 return hidinput; 1855 } 1856 1857 return NULL; 1858 } 1859 1860 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1861 struct hid_report *report) 1862 { 1863 int i, j; 1864 1865 for (i = 0; i < report->maxfield; i++) 1866 for (j = 0; j < report->field[i]->maxusage; j++) 1867 hidinput_configure_usage(hidinput, report->field[i], 1868 report->field[i]->usage + j); 1869 } 1870 1871 /* 1872 * Register the input device; print a message. 1873 * Configure the input layer interface 1874 * Read all reports and initialize the absolute field values. 1875 */ 1876 1877 int hidinput_connect(struct hid_device *hid, unsigned int force) 1878 { 1879 struct hid_driver *drv = hid->driver; 1880 struct hid_report *report; 1881 struct hid_input *next, *hidinput = NULL; 1882 unsigned int application; 1883 int i, k; 1884 1885 INIT_LIST_HEAD(&hid->inputs); 1886 INIT_WORK(&hid->led_work, hidinput_led_worker); 1887 1888 hid->status &= ~HID_STAT_DUP_DETECTED; 1889 1890 if (!force) { 1891 for (i = 0; i < hid->maxcollection; i++) { 1892 struct hid_collection *col = &hid->collection[i]; 1893 if (col->type == HID_COLLECTION_APPLICATION || 1894 col->type == HID_COLLECTION_PHYSICAL) 1895 if (IS_INPUT_APPLICATION(col->usage)) 1896 break; 1897 } 1898 1899 if (i == hid->maxcollection) 1900 return -1; 1901 } 1902 1903 report_features(hid); 1904 1905 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1906 if (k == HID_OUTPUT_REPORT && 1907 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1908 continue; 1909 1910 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1911 1912 if (!report->maxfield) 1913 continue; 1914 1915 application = report->application; 1916 1917 /* 1918 * Find the previous hidinput report attached 1919 * to this report id. 1920 */ 1921 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1922 hidinput = hidinput_match(report); 1923 else if (hid->maxapplication > 1 && 1924 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1925 hidinput = hidinput_match_application(report); 1926 1927 if (!hidinput) { 1928 hidinput = hidinput_allocate(hid, application); 1929 if (!hidinput) 1930 goto out_unwind; 1931 } 1932 1933 hidinput_configure_usages(hidinput, report); 1934 1935 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1936 hidinput->report = report; 1937 1938 list_add_tail(&report->hidinput_list, 1939 &hidinput->reports); 1940 } 1941 } 1942 1943 hidinput_change_resolution_multipliers(hid); 1944 1945 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1946 if (drv->input_configured && 1947 drv->input_configured(hid, hidinput)) 1948 goto out_unwind; 1949 1950 if (!hidinput_has_been_populated(hidinput)) { 1951 /* no need to register an input device not populated */ 1952 hidinput_cleanup_hidinput(hid, hidinput); 1953 continue; 1954 } 1955 1956 if (input_register_device(hidinput->input)) 1957 goto out_unwind; 1958 hidinput->registered = true; 1959 } 1960 1961 if (list_empty(&hid->inputs)) { 1962 hid_err(hid, "No inputs registered, leaving\n"); 1963 goto out_unwind; 1964 } 1965 1966 if (hid->status & HID_STAT_DUP_DETECTED) 1967 hid_dbg(hid, 1968 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 1969 1970 return 0; 1971 1972 out_unwind: 1973 /* unwind the ones we already registered */ 1974 hidinput_disconnect(hid); 1975 1976 return -1; 1977 } 1978 EXPORT_SYMBOL_GPL(hidinput_connect); 1979 1980 void hidinput_disconnect(struct hid_device *hid) 1981 { 1982 struct hid_input *hidinput, *next; 1983 1984 hidinput_cleanup_battery(hid); 1985 1986 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1987 list_del(&hidinput->list); 1988 if (hidinput->registered) 1989 input_unregister_device(hidinput->input); 1990 else 1991 input_free_device(hidinput->input); 1992 kfree(hidinput->name); 1993 kfree(hidinput); 1994 } 1995 1996 /* led_work is spawned by input_dev callbacks, but doesn't access the 1997 * parent input_dev at all. Once all input devices are removed, we 1998 * know that led_work will never get restarted, so we can cancel it 1999 * synchronously and are safe. */ 2000 cancel_work_sync(&hid->led_work); 2001 } 2002 EXPORT_SYMBOL_GPL(hidinput_disconnect); 2003