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 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN), 326 HID_BATTERY_QUIRK_IGNORE }, 327 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15), 328 HID_BATTERY_QUIRK_IGNORE }, 329 {} 330 }; 331 332 static unsigned find_battery_quirk(struct hid_device *hdev) 333 { 334 unsigned quirks = 0; 335 const struct hid_device_id *match; 336 337 match = hid_match_id(hdev, hid_battery_quirks); 338 if (match != NULL) 339 quirks = match->driver_data; 340 341 return quirks; 342 } 343 344 static int hidinput_scale_battery_capacity(struct hid_device *dev, 345 int value) 346 { 347 if (dev->battery_min < dev->battery_max && 348 value >= dev->battery_min && value <= dev->battery_max) 349 value = ((value - dev->battery_min) * 100) / 350 (dev->battery_max - dev->battery_min); 351 352 return value; 353 } 354 355 static int hidinput_query_battery_capacity(struct hid_device *dev) 356 { 357 u8 *buf; 358 int ret; 359 360 buf = kmalloc(4, GFP_KERNEL); 361 if (!buf) 362 return -ENOMEM; 363 364 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4, 365 dev->battery_report_type, HID_REQ_GET_REPORT); 366 if (ret < 2) { 367 kfree(buf); 368 return -ENODATA; 369 } 370 371 ret = hidinput_scale_battery_capacity(dev, buf[1]); 372 kfree(buf); 373 return ret; 374 } 375 376 static int hidinput_get_battery_property(struct power_supply *psy, 377 enum power_supply_property prop, 378 union power_supply_propval *val) 379 { 380 struct hid_device *dev = power_supply_get_drvdata(psy); 381 int value; 382 int ret = 0; 383 384 switch (prop) { 385 case POWER_SUPPLY_PROP_PRESENT: 386 case POWER_SUPPLY_PROP_ONLINE: 387 val->intval = 1; 388 break; 389 390 case POWER_SUPPLY_PROP_CAPACITY: 391 if (dev->battery_status != HID_BATTERY_REPORTED && 392 !dev->battery_avoid_query) { 393 value = hidinput_query_battery_capacity(dev); 394 if (value < 0) 395 return value; 396 } else { 397 value = dev->battery_capacity; 398 } 399 400 val->intval = value; 401 break; 402 403 case POWER_SUPPLY_PROP_MODEL_NAME: 404 val->strval = dev->name; 405 break; 406 407 case POWER_SUPPLY_PROP_STATUS: 408 if (dev->battery_status != HID_BATTERY_REPORTED && 409 !dev->battery_avoid_query) { 410 value = hidinput_query_battery_capacity(dev); 411 if (value < 0) 412 return value; 413 414 dev->battery_capacity = value; 415 dev->battery_status = HID_BATTERY_QUERIED; 416 } 417 418 if (dev->battery_status == HID_BATTERY_UNKNOWN) 419 val->intval = POWER_SUPPLY_STATUS_UNKNOWN; 420 else if (dev->battery_capacity == 100) 421 val->intval = POWER_SUPPLY_STATUS_FULL; 422 else 423 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 424 break; 425 426 case POWER_SUPPLY_PROP_SCOPE: 427 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 428 break; 429 430 default: 431 ret = -EINVAL; 432 break; 433 } 434 435 return ret; 436 } 437 438 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field) 439 { 440 struct power_supply_desc *psy_desc; 441 struct power_supply_config psy_cfg = { .drv_data = dev, }; 442 unsigned quirks; 443 s32 min, max; 444 int error; 445 446 if (dev->battery) 447 return 0; /* already initialized? */ 448 449 quirks = find_battery_quirk(dev); 450 451 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 452 dev->bus, dev->vendor, dev->product, dev->version, quirks); 453 454 if (quirks & HID_BATTERY_QUIRK_IGNORE) 455 return 0; 456 457 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); 458 if (!psy_desc) 459 return -ENOMEM; 460 461 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", 462 strlen(dev->uniq) ? 463 dev->uniq : dev_name(&dev->dev)); 464 if (!psy_desc->name) { 465 error = -ENOMEM; 466 goto err_free_mem; 467 } 468 469 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 470 psy_desc->properties = hidinput_battery_props; 471 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); 472 psy_desc->use_for_apm = 0; 473 psy_desc->get_property = hidinput_get_battery_property; 474 475 min = field->logical_minimum; 476 max = field->logical_maximum; 477 478 if (quirks & HID_BATTERY_QUIRK_PERCENT) { 479 min = 0; 480 max = 100; 481 } 482 483 if (quirks & HID_BATTERY_QUIRK_FEATURE) 484 report_type = HID_FEATURE_REPORT; 485 486 dev->battery_min = min; 487 dev->battery_max = max; 488 dev->battery_report_type = report_type; 489 dev->battery_report_id = field->report->id; 490 491 /* 492 * Stylus is normally not connected to the device and thus we 493 * can't query the device and get meaningful battery strength. 494 * We have to wait for the device to report it on its own. 495 */ 496 dev->battery_avoid_query = report_type == HID_INPUT_REPORT && 497 field->physical == HID_DG_STYLUS; 498 499 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); 500 if (IS_ERR(dev->battery)) { 501 error = PTR_ERR(dev->battery); 502 hid_warn(dev, "can't register power supply: %d\n", error); 503 goto err_free_name; 504 } 505 506 power_supply_powers(dev->battery, &dev->dev); 507 return 0; 508 509 err_free_name: 510 kfree(psy_desc->name); 511 err_free_mem: 512 kfree(psy_desc); 513 dev->battery = NULL; 514 return error; 515 } 516 517 static void hidinput_cleanup_battery(struct hid_device *dev) 518 { 519 const struct power_supply_desc *psy_desc; 520 521 if (!dev->battery) 522 return; 523 524 psy_desc = dev->battery->desc; 525 power_supply_unregister(dev->battery); 526 kfree(psy_desc->name); 527 kfree(psy_desc); 528 dev->battery = NULL; 529 } 530 531 static void hidinput_update_battery(struct hid_device *dev, int value) 532 { 533 int capacity; 534 535 if (!dev->battery) 536 return; 537 538 if (value == 0 || value < dev->battery_min || value > dev->battery_max) 539 return; 540 541 capacity = hidinput_scale_battery_capacity(dev, value); 542 543 if (dev->battery_status != HID_BATTERY_REPORTED || 544 capacity != dev->battery_capacity || 545 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) { 546 dev->battery_capacity = capacity; 547 dev->battery_status = HID_BATTERY_REPORTED; 548 dev->battery_ratelimit_time = 549 ktime_add_ms(ktime_get_coarse(), 30 * 1000); 550 power_supply_changed(dev->battery); 551 } 552 } 553 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 554 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 555 struct hid_field *field) 556 { 557 return 0; 558 } 559 560 static void hidinput_cleanup_battery(struct hid_device *dev) 561 { 562 } 563 564 static void hidinput_update_battery(struct hid_device *dev, int value) 565 { 566 } 567 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 568 569 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 570 struct hid_usage *usage) 571 { 572 struct input_dev *input = hidinput->input; 573 struct hid_device *device = input_get_drvdata(input); 574 int max = 0, code; 575 unsigned long *bit = NULL; 576 577 field->hidinput = hidinput; 578 579 if (field->flags & HID_MAIN_ITEM_CONSTANT) 580 goto ignore; 581 582 /* Ignore if report count is out of bounds. */ 583 if (field->report_count < 1) 584 goto ignore; 585 586 /* only LED usages are supported in output fields */ 587 if (field->report_type == HID_OUTPUT_REPORT && 588 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 589 goto ignore; 590 } 591 592 if (device->driver->input_mapping) { 593 int ret = device->driver->input_mapping(device, hidinput, field, 594 usage, &bit, &max); 595 if (ret > 0) 596 goto mapped; 597 if (ret < 0) 598 goto ignore; 599 } 600 601 switch (usage->hid & HID_USAGE_PAGE) { 602 case HID_UP_UNDEFINED: 603 goto ignore; 604 605 case HID_UP_KEYBOARD: 606 set_bit(EV_REP, input->evbit); 607 608 if ((usage->hid & HID_USAGE) < 256) { 609 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 610 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 611 } else 612 map_key(KEY_UNKNOWN); 613 614 break; 615 616 case HID_UP_BUTTON: 617 code = ((usage->hid - 1) & HID_USAGE); 618 619 switch (field->application) { 620 case HID_GD_MOUSE: 621 case HID_GD_POINTER: code += BTN_MOUSE; break; 622 case HID_GD_JOYSTICK: 623 if (code <= 0xf) 624 code += BTN_JOYSTICK; 625 else 626 code += BTN_TRIGGER_HAPPY - 0x10; 627 break; 628 case HID_GD_GAMEPAD: 629 if (code <= 0xf) 630 code += BTN_GAMEPAD; 631 else 632 code += BTN_TRIGGER_HAPPY - 0x10; 633 break; 634 default: 635 switch (field->physical) { 636 case HID_GD_MOUSE: 637 case HID_GD_POINTER: code += BTN_MOUSE; break; 638 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 639 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 640 default: code += BTN_MISC; 641 } 642 } 643 644 map_key(code); 645 break; 646 647 case HID_UP_SIMULATION: 648 switch (usage->hid & 0xffff) { 649 case 0xba: map_abs(ABS_RUDDER); break; 650 case 0xbb: map_abs(ABS_THROTTLE); break; 651 case 0xc4: map_abs(ABS_GAS); break; 652 case 0xc5: map_abs(ABS_BRAKE); break; 653 case 0xc8: map_abs(ABS_WHEEL); break; 654 default: goto ignore; 655 } 656 break; 657 658 case HID_UP_GENDESK: 659 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 660 switch (usage->hid & 0xf) { 661 case 0x1: map_key_clear(KEY_POWER); break; 662 case 0x2: map_key_clear(KEY_SLEEP); break; 663 case 0x3: map_key_clear(KEY_WAKEUP); break; 664 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 665 case 0x5: map_key_clear(KEY_MENU); break; 666 case 0x6: map_key_clear(KEY_PROG1); break; 667 case 0x7: map_key_clear(KEY_HELP); break; 668 case 0x8: map_key_clear(KEY_EXIT); break; 669 case 0x9: map_key_clear(KEY_SELECT); break; 670 case 0xa: map_key_clear(KEY_RIGHT); break; 671 case 0xb: map_key_clear(KEY_LEFT); break; 672 case 0xc: map_key_clear(KEY_UP); break; 673 case 0xd: map_key_clear(KEY_DOWN); break; 674 case 0xe: map_key_clear(KEY_POWER2); break; 675 case 0xf: map_key_clear(KEY_RESTART); break; 676 default: goto unknown; 677 } 678 break; 679 } 680 681 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */ 682 switch (usage->hid & 0xf) { 683 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break; 684 default: goto ignore; 685 } 686 break; 687 } 688 689 /* 690 * Some lazy vendors declare 255 usages for System Control, 691 * leading to the creation of ABS_X|Y axis and too many others. 692 * It wouldn't be a problem if joydev doesn't consider the 693 * device as a joystick then. 694 */ 695 if (field->application == HID_GD_SYSTEM_CONTROL) 696 goto ignore; 697 698 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 699 switch (usage->hid) { 700 case HID_GD_UP: usage->hat_dir = 1; break; 701 case HID_GD_DOWN: usage->hat_dir = 5; break; 702 case HID_GD_RIGHT: usage->hat_dir = 3; break; 703 case HID_GD_LEFT: usage->hat_dir = 7; break; 704 default: goto unknown; 705 } 706 if (field->dpad) { 707 map_abs(field->dpad); 708 goto ignore; 709 } 710 map_abs(ABS_HAT0X); 711 break; 712 } 713 714 switch (usage->hid) { 715 /* These usage IDs map directly to the usage codes. */ 716 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 717 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 718 if (field->flags & HID_MAIN_ITEM_RELATIVE) 719 map_rel(usage->hid & 0xf); 720 else 721 map_abs_clear(usage->hid & 0xf); 722 break; 723 724 case HID_GD_WHEEL: 725 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 726 set_bit(REL_WHEEL, input->relbit); 727 map_rel(REL_WHEEL_HI_RES); 728 } else { 729 map_abs(usage->hid & 0xf); 730 } 731 break; 732 case HID_GD_SLIDER: case HID_GD_DIAL: 733 if (field->flags & HID_MAIN_ITEM_RELATIVE) 734 map_rel(usage->hid & 0xf); 735 else 736 map_abs(usage->hid & 0xf); 737 break; 738 739 case HID_GD_HATSWITCH: 740 usage->hat_min = field->logical_minimum; 741 usage->hat_max = field->logical_maximum; 742 map_abs(ABS_HAT0X); 743 break; 744 745 case HID_GD_START: map_key_clear(BTN_START); break; 746 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 747 748 case HID_GD_RFKILL_BTN: 749 /* MS wireless radio ctl extension, also check CA */ 750 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 751 map_key_clear(KEY_RFKILL); 752 /* We need to simulate the btn release */ 753 field->flags |= HID_MAIN_ITEM_RELATIVE; 754 break; 755 } 756 goto unknown; 757 758 default: goto unknown; 759 } 760 761 break; 762 763 case HID_UP_LED: 764 switch (usage->hid & 0xffff) { /* HID-Value: */ 765 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 766 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 767 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 768 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 769 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 770 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 771 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 772 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 773 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 774 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 775 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 776 777 default: goto ignore; 778 } 779 break; 780 781 case HID_UP_DIGITIZER: 782 if ((field->application & 0xff) == 0x01) /* Digitizer */ 783 __set_bit(INPUT_PROP_POINTER, input->propbit); 784 else if ((field->application & 0xff) == 0x02) /* Pen */ 785 __set_bit(INPUT_PROP_DIRECT, input->propbit); 786 787 switch (usage->hid & 0xff) { 788 case 0x00: /* Undefined */ 789 goto ignore; 790 791 case 0x30: /* TipPressure */ 792 if (!test_bit(BTN_TOUCH, input->keybit)) { 793 device->quirks |= HID_QUIRK_NOTOUCH; 794 set_bit(EV_KEY, input->evbit); 795 set_bit(BTN_TOUCH, input->keybit); 796 } 797 map_abs_clear(ABS_PRESSURE); 798 break; 799 800 case 0x32: /* InRange */ 801 switch (field->physical & 0xff) { 802 case 0x21: map_key(BTN_TOOL_MOUSE); break; 803 case 0x22: map_key(BTN_TOOL_FINGER); break; 804 default: map_key(BTN_TOOL_PEN); break; 805 } 806 break; 807 808 case 0x3b: /* Battery Strength */ 809 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 810 usage->type = EV_PWR; 811 return; 812 813 case 0x3c: /* Invert */ 814 map_key_clear(BTN_TOOL_RUBBER); 815 break; 816 817 case 0x3d: /* X Tilt */ 818 map_abs_clear(ABS_TILT_X); 819 break; 820 821 case 0x3e: /* Y Tilt */ 822 map_abs_clear(ABS_TILT_Y); 823 break; 824 825 case 0x33: /* Touch */ 826 case 0x42: /* TipSwitch */ 827 case 0x43: /* TipSwitch2 */ 828 device->quirks &= ~HID_QUIRK_NOTOUCH; 829 map_key_clear(BTN_TOUCH); 830 break; 831 832 case 0x44: /* BarrelSwitch */ 833 map_key_clear(BTN_STYLUS); 834 break; 835 836 case 0x45: /* ERASER */ 837 /* 838 * This event is reported when eraser tip touches the surface. 839 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when 840 * tool gets in proximity. 841 */ 842 map_key_clear(BTN_TOUCH); 843 break; 844 845 case 0x46: /* TabletPick */ 846 case 0x5a: /* SecondaryBarrelSwitch */ 847 map_key_clear(BTN_STYLUS2); 848 break; 849 850 case 0x5b: /* TransducerSerialNumber */ 851 usage->type = EV_MSC; 852 usage->code = MSC_SERIAL; 853 bit = input->mscbit; 854 max = MSC_MAX; 855 break; 856 857 default: goto unknown; 858 } 859 break; 860 861 case HID_UP_TELEPHONY: 862 switch (usage->hid & HID_USAGE) { 863 case 0x2f: map_key_clear(KEY_MICMUTE); break; 864 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 865 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 866 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 867 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 868 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 869 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 870 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 871 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 872 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 873 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 874 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 875 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 876 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 877 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 878 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 879 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 880 default: goto ignore; 881 } 882 break; 883 884 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 885 switch (usage->hid & HID_USAGE) { 886 case 0x000: goto ignore; 887 case 0x030: map_key_clear(KEY_POWER); break; 888 case 0x031: map_key_clear(KEY_RESTART); break; 889 case 0x032: map_key_clear(KEY_SLEEP); break; 890 case 0x034: map_key_clear(KEY_SLEEP); break; 891 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 892 case 0x036: map_key_clear(BTN_MISC); break; 893 894 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 895 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 896 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 897 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 898 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 899 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 900 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 901 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 902 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 903 904 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 905 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 906 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 907 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 908 case 0x069: map_key_clear(KEY_RED); break; 909 case 0x06a: map_key_clear(KEY_GREEN); break; 910 case 0x06b: map_key_clear(KEY_BLUE); break; 911 case 0x06c: map_key_clear(KEY_YELLOW); break; 912 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break; 913 914 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 915 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 916 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 917 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 918 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 919 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 920 921 case 0x079: map_key_clear(KEY_KBDILLUMUP); break; 922 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break; 923 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break; 924 925 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 926 case 0x083: map_key_clear(KEY_LAST); break; 927 case 0x084: map_key_clear(KEY_ENTER); break; 928 case 0x088: map_key_clear(KEY_PC); break; 929 case 0x089: map_key_clear(KEY_TV); break; 930 case 0x08a: map_key_clear(KEY_WWW); break; 931 case 0x08b: map_key_clear(KEY_DVD); break; 932 case 0x08c: map_key_clear(KEY_PHONE); break; 933 case 0x08d: map_key_clear(KEY_PROGRAM); break; 934 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 935 case 0x08f: map_key_clear(KEY_GAMES); break; 936 case 0x090: map_key_clear(KEY_MEMO); break; 937 case 0x091: map_key_clear(KEY_CD); break; 938 case 0x092: map_key_clear(KEY_VCR); break; 939 case 0x093: map_key_clear(KEY_TUNER); break; 940 case 0x094: map_key_clear(KEY_EXIT); break; 941 case 0x095: map_key_clear(KEY_HELP); break; 942 case 0x096: map_key_clear(KEY_TAPE); break; 943 case 0x097: map_key_clear(KEY_TV2); break; 944 case 0x098: map_key_clear(KEY_SAT); break; 945 case 0x09a: map_key_clear(KEY_PVR); break; 946 947 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 948 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 949 case 0x0a0: map_key_clear(KEY_VCR2); break; 950 951 case 0x0b0: map_key_clear(KEY_PLAY); break; 952 case 0x0b1: map_key_clear(KEY_PAUSE); break; 953 case 0x0b2: map_key_clear(KEY_RECORD); break; 954 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 955 case 0x0b4: map_key_clear(KEY_REWIND); break; 956 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 957 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 958 case 0x0b7: map_key_clear(KEY_STOPCD); break; 959 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 960 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 961 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 962 case 0x0bf: map_key_clear(KEY_SLOW); break; 963 964 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 965 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 966 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 967 case 0x0e2: map_key_clear(KEY_MUTE); break; 968 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 969 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 970 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 971 case 0x0f5: map_key_clear(KEY_SLOW); break; 972 973 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 974 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 975 case 0x183: map_key_clear(KEY_CONFIG); break; 976 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 977 case 0x185: map_key_clear(KEY_EDITOR); break; 978 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 979 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 980 case 0x188: map_key_clear(KEY_PRESENTATION); break; 981 case 0x189: map_key_clear(KEY_DATABASE); break; 982 case 0x18a: map_key_clear(KEY_MAIL); break; 983 case 0x18b: map_key_clear(KEY_NEWS); break; 984 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 985 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 986 case 0x18e: map_key_clear(KEY_CALENDAR); break; 987 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 988 case 0x190: map_key_clear(KEY_JOURNAL); break; 989 case 0x191: map_key_clear(KEY_FINANCE); break; 990 case 0x192: map_key_clear(KEY_CALC); break; 991 case 0x193: map_key_clear(KEY_PLAYER); break; 992 case 0x194: map_key_clear(KEY_FILE); break; 993 case 0x196: map_key_clear(KEY_WWW); break; 994 case 0x199: map_key_clear(KEY_CHAT); break; 995 case 0x19c: map_key_clear(KEY_LOGOFF); break; 996 case 0x19e: map_key_clear(KEY_COFFEE); break; 997 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 998 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 999 case 0x1a3: map_key_clear(KEY_NEXT); break; 1000 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 1001 case 0x1a6: map_key_clear(KEY_HELP); break; 1002 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 1003 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 1004 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 1005 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 1006 case 0x1b4: map_key_clear(KEY_FILE); break; 1007 case 0x1b6: map_key_clear(KEY_IMAGES); break; 1008 case 0x1b7: map_key_clear(KEY_AUDIO); break; 1009 case 0x1b8: map_key_clear(KEY_VIDEO); break; 1010 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1011 case 0x1bd: map_key_clear(KEY_INFO); break; 1012 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1013 case 0x201: map_key_clear(KEY_NEW); break; 1014 case 0x202: map_key_clear(KEY_OPEN); break; 1015 case 0x203: map_key_clear(KEY_CLOSE); break; 1016 case 0x204: map_key_clear(KEY_EXIT); break; 1017 case 0x207: map_key_clear(KEY_SAVE); break; 1018 case 0x208: map_key_clear(KEY_PRINT); break; 1019 case 0x209: map_key_clear(KEY_PROPS); break; 1020 case 0x21a: map_key_clear(KEY_UNDO); break; 1021 case 0x21b: map_key_clear(KEY_COPY); break; 1022 case 0x21c: map_key_clear(KEY_CUT); break; 1023 case 0x21d: map_key_clear(KEY_PASTE); break; 1024 case 0x21f: map_key_clear(KEY_FIND); break; 1025 case 0x221: map_key_clear(KEY_SEARCH); break; 1026 case 0x222: map_key_clear(KEY_GOTO); break; 1027 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1028 case 0x224: map_key_clear(KEY_BACK); break; 1029 case 0x225: map_key_clear(KEY_FORWARD); break; 1030 case 0x226: map_key_clear(KEY_STOP); break; 1031 case 0x227: map_key_clear(KEY_REFRESH); break; 1032 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1033 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1034 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1035 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1036 case 0x232: map_key_clear(KEY_FULL_SCREEN); break; 1037 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1038 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1039 case 0x238: /* AC Pan */ 1040 set_bit(REL_HWHEEL, input->relbit); 1041 map_rel(REL_HWHEEL_HI_RES); 1042 break; 1043 case 0x23d: map_key_clear(KEY_EDIT); break; 1044 case 0x25f: map_key_clear(KEY_CANCEL); break; 1045 case 0x269: map_key_clear(KEY_INSERT); break; 1046 case 0x26a: map_key_clear(KEY_DELETE); break; 1047 case 0x279: map_key_clear(KEY_REDO); break; 1048 1049 case 0x289: map_key_clear(KEY_REPLY); break; 1050 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1051 case 0x28c: map_key_clear(KEY_SEND); break; 1052 1053 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break; 1054 1055 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1056 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1057 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1058 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1059 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1060 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1061 1062 case 0x29f: map_key_clear(KEY_SCALE); break; 1063 1064 default: map_key_clear(KEY_UNKNOWN); 1065 } 1066 break; 1067 1068 case HID_UP_GENDEVCTRLS: 1069 switch (usage->hid) { 1070 case HID_DC_BATTERYSTRENGTH: 1071 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 1072 usage->type = EV_PWR; 1073 return; 1074 } 1075 goto unknown; 1076 1077 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1078 set_bit(EV_REP, input->evbit); 1079 switch (usage->hid & HID_USAGE) { 1080 case 0x021: map_key_clear(KEY_PRINT); break; 1081 case 0x070: map_key_clear(KEY_HP); break; 1082 case 0x071: map_key_clear(KEY_CAMERA); break; 1083 case 0x072: map_key_clear(KEY_SOUND); break; 1084 case 0x073: map_key_clear(KEY_QUESTION); break; 1085 case 0x080: map_key_clear(KEY_EMAIL); break; 1086 case 0x081: map_key_clear(KEY_CHAT); break; 1087 case 0x082: map_key_clear(KEY_SEARCH); break; 1088 case 0x083: map_key_clear(KEY_CONNECT); break; 1089 case 0x084: map_key_clear(KEY_FINANCE); break; 1090 case 0x085: map_key_clear(KEY_SPORT); break; 1091 case 0x086: map_key_clear(KEY_SHOP); break; 1092 default: goto ignore; 1093 } 1094 break; 1095 1096 case HID_UP_HPVENDOR2: 1097 set_bit(EV_REP, input->evbit); 1098 switch (usage->hid & HID_USAGE) { 1099 case 0x001: map_key_clear(KEY_MICMUTE); break; 1100 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1101 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1102 default: goto ignore; 1103 } 1104 break; 1105 1106 case HID_UP_MSVENDOR: 1107 goto ignore; 1108 1109 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1110 set_bit(EV_REP, input->evbit); 1111 goto ignore; 1112 1113 case HID_UP_LOGIVENDOR: 1114 /* intentional fallback */ 1115 case HID_UP_LOGIVENDOR2: 1116 /* intentional fallback */ 1117 case HID_UP_LOGIVENDOR3: 1118 goto ignore; 1119 1120 case HID_UP_PID: 1121 switch (usage->hid & HID_USAGE) { 1122 case 0xa4: map_key_clear(BTN_DEAD); break; 1123 default: goto ignore; 1124 } 1125 break; 1126 1127 default: 1128 unknown: 1129 if (field->report_size == 1) { 1130 if (field->report->type == HID_OUTPUT_REPORT) { 1131 map_led(LED_MISC); 1132 break; 1133 } 1134 map_key(BTN_MISC); 1135 break; 1136 } 1137 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1138 map_rel(REL_MISC); 1139 break; 1140 } 1141 map_abs(ABS_MISC); 1142 break; 1143 } 1144 1145 mapped: 1146 /* Mapping failed, bail out */ 1147 if (!bit) 1148 return; 1149 1150 if (device->driver->input_mapped && 1151 device->driver->input_mapped(device, hidinput, field, usage, 1152 &bit, &max) < 0) { 1153 /* 1154 * The driver indicated that no further generic handling 1155 * of the usage is desired. 1156 */ 1157 return; 1158 } 1159 1160 set_bit(usage->type, input->evbit); 1161 1162 /* 1163 * This part is *really* controversial: 1164 * - HID aims at being generic so we should do our best to export 1165 * all incoming events 1166 * - HID describes what events are, so there is no reason for ABS_X 1167 * to be mapped to ABS_Y 1168 * - HID is using *_MISC+N as a default value, but nothing prevents 1169 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1170 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1171 * processing) 1172 * 1173 * If devices still want to use this (at their own risk), they will 1174 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1175 * the default should be a reliable mapping. 1176 */ 1177 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1178 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1179 usage->code = find_next_zero_bit(bit, 1180 max + 1, 1181 usage->code); 1182 } else { 1183 device->status |= HID_STAT_DUP_DETECTED; 1184 goto ignore; 1185 } 1186 } 1187 1188 if (usage->code > max) 1189 goto ignore; 1190 1191 if (usage->type == EV_ABS) { 1192 1193 int a = field->logical_minimum; 1194 int b = field->logical_maximum; 1195 1196 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1197 a = field->logical_minimum = 0; 1198 b = field->logical_maximum = 255; 1199 } 1200 1201 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1202 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1203 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1204 1205 input_abs_set_res(input, usage->code, 1206 hidinput_calc_abs_res(field, usage->code)); 1207 1208 /* use a larger default input buffer for MT devices */ 1209 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1210 input_set_events_per_packet(input, 60); 1211 } 1212 1213 if (usage->type == EV_ABS && 1214 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1215 int i; 1216 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1217 input_set_abs_params(input, i, -1, 1, 0, 0); 1218 set_bit(i, input->absbit); 1219 } 1220 if (usage->hat_dir && !field->dpad) 1221 field->dpad = usage->code; 1222 } 1223 1224 /* for those devices which produce Consumer volume usage as relative, 1225 * we emulate pressing volumeup/volumedown appropriate number of times 1226 * in hidinput_hid_event() 1227 */ 1228 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1229 (usage->code == ABS_VOLUME)) { 1230 set_bit(KEY_VOLUMEUP, input->keybit); 1231 set_bit(KEY_VOLUMEDOWN, input->keybit); 1232 } 1233 1234 if (usage->type == EV_KEY) { 1235 set_bit(EV_MSC, input->evbit); 1236 set_bit(MSC_SCAN, input->mscbit); 1237 } 1238 1239 return; 1240 1241 ignore: 1242 usage->type = 0; 1243 usage->code = 0; 1244 } 1245 1246 static void hidinput_handle_scroll(struct hid_usage *usage, 1247 struct input_dev *input, 1248 __s32 value) 1249 { 1250 int code; 1251 int hi_res, lo_res; 1252 1253 if (value == 0) 1254 return; 1255 1256 if (usage->code == REL_WHEEL_HI_RES) 1257 code = REL_WHEEL; 1258 else 1259 code = REL_HWHEEL; 1260 1261 /* 1262 * Windows reports one wheel click as value 120. Where a high-res 1263 * scroll wheel is present, a fraction of 120 is reported instead. 1264 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1265 * adhere to the 120 expectation. 1266 */ 1267 hi_res = value * 120/usage->resolution_multiplier; 1268 1269 usage->wheel_accumulated += hi_res; 1270 lo_res = usage->wheel_accumulated/120; 1271 if (lo_res) 1272 usage->wheel_accumulated -= lo_res * 120; 1273 1274 input_event(input, EV_REL, code, lo_res); 1275 input_event(input, EV_REL, usage->code, hi_res); 1276 } 1277 1278 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1279 { 1280 struct input_dev *input; 1281 unsigned *quirks = &hid->quirks; 1282 1283 if (!usage->type) 1284 return; 1285 1286 if (usage->type == EV_PWR) { 1287 hidinput_update_battery(hid, value); 1288 return; 1289 } 1290 1291 if (!field->hidinput) 1292 return; 1293 1294 input = field->hidinput->input; 1295 1296 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1297 int hat_dir = usage->hat_dir; 1298 if (!hat_dir) 1299 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1300 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1301 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1302 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1303 return; 1304 } 1305 1306 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 1307 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1308 return; 1309 } 1310 1311 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 1312 if (value) { 1313 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1314 return; 1315 } 1316 input_event(input, usage->type, usage->code, 0); 1317 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1318 return; 1319 } 1320 1321 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 1322 int a = field->logical_minimum; 1323 int b = field->logical_maximum; 1324 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1325 } 1326 1327 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1328 dbg_hid("Maximum Effects - %d\n",value); 1329 return; 1330 } 1331 1332 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1333 dbg_hid("PID Pool Report\n"); 1334 return; 1335 } 1336 1337 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1338 return; 1339 1340 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1341 usage->code == REL_HWHEEL_HI_RES)) { 1342 hidinput_handle_scroll(usage, input, value); 1343 return; 1344 } 1345 1346 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1347 (usage->code == ABS_VOLUME)) { 1348 int count = abs(value); 1349 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1350 int i; 1351 1352 for (i = 0; i < count; i++) { 1353 input_event(input, EV_KEY, direction, 1); 1354 input_sync(input); 1355 input_event(input, EV_KEY, direction, 0); 1356 input_sync(input); 1357 } 1358 return; 1359 } 1360 1361 /* 1362 * Ignore out-of-range values as per HID specification, 1363 * section 5.10 and 6.2.25, when NULL state bit is present. 1364 * When it's not, clamp the value to match Microsoft's input 1365 * driver as mentioned in "Required HID usages for digitizers": 1366 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1367 * 1368 * The logical_minimum < logical_maximum check is done so that we 1369 * don't unintentionally discard values sent by devices which 1370 * don't specify logical min and max. 1371 */ 1372 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1373 (field->logical_minimum < field->logical_maximum)) { 1374 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1375 (value < field->logical_minimum || 1376 value > field->logical_maximum)) { 1377 dbg_hid("Ignoring out-of-range value %x\n", value); 1378 return; 1379 } 1380 value = clamp(value, 1381 field->logical_minimum, 1382 field->logical_maximum); 1383 } 1384 1385 /* 1386 * Ignore reports for absolute data if the data didn't change. This is 1387 * not only an optimization but also fixes 'dead' key reports. Some 1388 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1389 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1390 * can only have one of them physically available. The 'dead' keys 1391 * report constant 0. As all map to the same keycode, they'd confuse 1392 * the input layer. If we filter the 'dead' keys on the HID level, we 1393 * skip the keycode translation and only forward real events. 1394 */ 1395 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1396 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1397 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1398 usage->usage_index < field->maxusage && 1399 value == field->value[usage->usage_index]) 1400 return; 1401 1402 /* report the usage code as scancode if the key status has changed */ 1403 if (usage->type == EV_KEY && 1404 (!test_bit(usage->code, input->key)) == value) 1405 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1406 1407 input_event(input, usage->type, usage->code, value); 1408 1409 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1410 usage->type == EV_KEY && value) { 1411 input_sync(input); 1412 input_event(input, usage->type, usage->code, 0); 1413 } 1414 } 1415 1416 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1417 { 1418 struct hid_input *hidinput; 1419 1420 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1421 return; 1422 1423 list_for_each_entry(hidinput, &hid->inputs, list) 1424 input_sync(hidinput->input); 1425 } 1426 EXPORT_SYMBOL_GPL(hidinput_report_event); 1427 1428 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1429 { 1430 struct hid_report *report; 1431 int i, j; 1432 1433 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1434 for (i = 0; i < report->maxfield; i++) { 1435 *field = report->field[i]; 1436 for (j = 0; j < (*field)->maxusage; j++) 1437 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1438 return j; 1439 } 1440 } 1441 return -1; 1442 } 1443 EXPORT_SYMBOL_GPL(hidinput_find_field); 1444 1445 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1446 { 1447 struct hid_report *report; 1448 struct hid_field *field; 1449 int i, j; 1450 1451 list_for_each_entry(report, 1452 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1453 list) { 1454 for (i = 0; i < report->maxfield; i++) { 1455 field = report->field[i]; 1456 for (j = 0; j < field->maxusage; j++) 1457 if (field->usage[j].type == EV_LED) 1458 return field; 1459 } 1460 } 1461 return NULL; 1462 } 1463 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1464 1465 unsigned int hidinput_count_leds(struct hid_device *hid) 1466 { 1467 struct hid_report *report; 1468 struct hid_field *field; 1469 int i, j; 1470 unsigned int count = 0; 1471 1472 list_for_each_entry(report, 1473 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1474 list) { 1475 for (i = 0; i < report->maxfield; i++) { 1476 field = report->field[i]; 1477 for (j = 0; j < field->maxusage; j++) 1478 if (field->usage[j].type == EV_LED && 1479 field->value[j]) 1480 count += 1; 1481 } 1482 } 1483 return count; 1484 } 1485 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1486 1487 static void hidinput_led_worker(struct work_struct *work) 1488 { 1489 struct hid_device *hid = container_of(work, struct hid_device, 1490 led_work); 1491 struct hid_field *field; 1492 struct hid_report *report; 1493 int ret; 1494 u32 len; 1495 __u8 *buf; 1496 1497 field = hidinput_get_led_field(hid); 1498 if (!field) 1499 return; 1500 1501 /* 1502 * field->report is accessed unlocked regarding HID core. So there might 1503 * be another incoming SET-LED request from user-space, which changes 1504 * the LED state while we assemble our outgoing buffer. However, this 1505 * doesn't matter as hid_output_report() correctly converts it into a 1506 * boolean value no matter what information is currently set on the LED 1507 * field (even garbage). So the remote device will always get a valid 1508 * request. 1509 * And in case we send a wrong value, a next led worker is spawned 1510 * for every SET-LED request so the following worker will send the 1511 * correct value, guaranteed! 1512 */ 1513 1514 report = field->report; 1515 1516 /* use custom SET_REPORT request if possible (asynchronous) */ 1517 if (hid->ll_driver->request) 1518 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1519 1520 /* fall back to generic raw-output-report */ 1521 len = hid_report_len(report); 1522 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1523 if (!buf) 1524 return; 1525 1526 hid_output_report(report, buf); 1527 /* synchronous output report */ 1528 ret = hid_hw_output_report(hid, buf, len); 1529 if (ret == -ENOSYS) 1530 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1531 HID_REQ_SET_REPORT); 1532 kfree(buf); 1533 } 1534 1535 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1536 unsigned int code, int value) 1537 { 1538 struct hid_device *hid = input_get_drvdata(dev); 1539 struct hid_field *field; 1540 int offset; 1541 1542 if (type == EV_FF) 1543 return input_ff_event(dev, type, code, value); 1544 1545 if (type != EV_LED) 1546 return -1; 1547 1548 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1549 hid_warn(dev, "event field not found\n"); 1550 return -1; 1551 } 1552 1553 hid_set_field(field, offset, value); 1554 1555 schedule_work(&hid->led_work); 1556 return 0; 1557 } 1558 1559 static int hidinput_open(struct input_dev *dev) 1560 { 1561 struct hid_device *hid = input_get_drvdata(dev); 1562 1563 return hid_hw_open(hid); 1564 } 1565 1566 static void hidinput_close(struct input_dev *dev) 1567 { 1568 struct hid_device *hid = input_get_drvdata(dev); 1569 1570 hid_hw_close(hid); 1571 } 1572 1573 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1574 struct hid_report *report, bool use_logical_max) 1575 { 1576 struct hid_usage *usage; 1577 bool update_needed = false; 1578 bool get_report_completed = false; 1579 int i, j; 1580 1581 if (report->maxfield == 0) 1582 return false; 1583 1584 for (i = 0; i < report->maxfield; i++) { 1585 __s32 value = use_logical_max ? 1586 report->field[i]->logical_maximum : 1587 report->field[i]->logical_minimum; 1588 1589 /* There is no good reason for a Resolution 1590 * Multiplier to have a count other than 1. 1591 * Ignore that case. 1592 */ 1593 if (report->field[i]->report_count != 1) 1594 continue; 1595 1596 for (j = 0; j < report->field[i]->maxusage; j++) { 1597 usage = &report->field[i]->usage[j]; 1598 1599 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1600 continue; 1601 1602 /* 1603 * If we have more than one feature within this 1604 * report we need to fill in the bits from the 1605 * others before we can overwrite the ones for the 1606 * Resolution Multiplier. 1607 * 1608 * But if we're not allowed to read from the device, 1609 * we just bail. Such a device should not exist 1610 * anyway. 1611 */ 1612 if (!get_report_completed && report->maxfield > 1) { 1613 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) 1614 return update_needed; 1615 1616 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1617 hid_hw_wait(hid); 1618 get_report_completed = true; 1619 } 1620 1621 report->field[i]->value[j] = value; 1622 update_needed = true; 1623 } 1624 } 1625 1626 return update_needed; 1627 } 1628 1629 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1630 { 1631 struct hid_report_enum *rep_enum; 1632 struct hid_report *rep; 1633 int ret; 1634 1635 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1636 list_for_each_entry(rep, &rep_enum->report_list, list) { 1637 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1638 rep, true); 1639 1640 if (update_needed) { 1641 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1642 if (ret) { 1643 __hidinput_change_resolution_multipliers(hid, 1644 rep, false); 1645 return; 1646 } 1647 } 1648 } 1649 1650 /* refresh our structs */ 1651 hid_setup_resolution_multiplier(hid); 1652 } 1653 1654 static void report_features(struct hid_device *hid) 1655 { 1656 struct hid_driver *drv = hid->driver; 1657 struct hid_report_enum *rep_enum; 1658 struct hid_report *rep; 1659 struct hid_usage *usage; 1660 int i, j; 1661 1662 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1663 list_for_each_entry(rep, &rep_enum->report_list, list) 1664 for (i = 0; i < rep->maxfield; i++) { 1665 /* Ignore if report count is out of bounds. */ 1666 if (rep->field[i]->report_count < 1) 1667 continue; 1668 1669 for (j = 0; j < rep->field[i]->maxusage; j++) { 1670 usage = &rep->field[i]->usage[j]; 1671 1672 /* Verify if Battery Strength feature is available */ 1673 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1674 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1675 rep->field[i]); 1676 1677 if (drv->feature_mapping) 1678 drv->feature_mapping(hid, rep->field[i], usage); 1679 } 1680 } 1681 } 1682 1683 static struct hid_input *hidinput_allocate(struct hid_device *hid, 1684 unsigned int application) 1685 { 1686 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1687 struct input_dev *input_dev = input_allocate_device(); 1688 const char *suffix = NULL; 1689 size_t suffix_len, name_len; 1690 1691 if (!hidinput || !input_dev) 1692 goto fail; 1693 1694 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1695 hid->maxapplication > 1) { 1696 switch (application) { 1697 case HID_GD_KEYBOARD: 1698 suffix = "Keyboard"; 1699 break; 1700 case HID_GD_KEYPAD: 1701 suffix = "Keypad"; 1702 break; 1703 case HID_GD_MOUSE: 1704 suffix = "Mouse"; 1705 break; 1706 case HID_DG_STYLUS: 1707 suffix = "Pen"; 1708 break; 1709 case HID_DG_TOUCHSCREEN: 1710 suffix = "Touchscreen"; 1711 break; 1712 case HID_DG_TOUCHPAD: 1713 suffix = "Touchpad"; 1714 break; 1715 case HID_GD_SYSTEM_CONTROL: 1716 suffix = "System Control"; 1717 break; 1718 case HID_CP_CONSUMER_CONTROL: 1719 suffix = "Consumer Control"; 1720 break; 1721 case HID_GD_WIRELESS_RADIO_CTLS: 1722 suffix = "Wireless Radio Control"; 1723 break; 1724 case HID_GD_SYSTEM_MULTIAXIS: 1725 suffix = "System Multi Axis"; 1726 break; 1727 default: 1728 break; 1729 } 1730 } 1731 1732 if (suffix) { 1733 name_len = strlen(hid->name); 1734 suffix_len = strlen(suffix); 1735 if ((name_len < suffix_len) || 1736 strcmp(hid->name + name_len - suffix_len, suffix)) { 1737 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1738 hid->name, suffix); 1739 if (!hidinput->name) 1740 goto fail; 1741 } 1742 } 1743 1744 input_set_drvdata(input_dev, hid); 1745 input_dev->event = hidinput_input_event; 1746 input_dev->open = hidinput_open; 1747 input_dev->close = hidinput_close; 1748 input_dev->setkeycode = hidinput_setkeycode; 1749 input_dev->getkeycode = hidinput_getkeycode; 1750 1751 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1752 input_dev->phys = hid->phys; 1753 input_dev->uniq = hid->uniq; 1754 input_dev->id.bustype = hid->bus; 1755 input_dev->id.vendor = hid->vendor; 1756 input_dev->id.product = hid->product; 1757 input_dev->id.version = hid->version; 1758 input_dev->dev.parent = &hid->dev; 1759 1760 hidinput->input = input_dev; 1761 hidinput->application = application; 1762 list_add_tail(&hidinput->list, &hid->inputs); 1763 1764 INIT_LIST_HEAD(&hidinput->reports); 1765 1766 return hidinput; 1767 1768 fail: 1769 kfree(hidinput); 1770 input_free_device(input_dev); 1771 hid_err(hid, "Out of memory during hid input probe\n"); 1772 return NULL; 1773 } 1774 1775 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1776 { 1777 int i; 1778 unsigned long r = 0; 1779 1780 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1781 r |= hidinput->input->evbit[i]; 1782 1783 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1784 r |= hidinput->input->keybit[i]; 1785 1786 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1787 r |= hidinput->input->relbit[i]; 1788 1789 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1790 r |= hidinput->input->absbit[i]; 1791 1792 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1793 r |= hidinput->input->mscbit[i]; 1794 1795 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1796 r |= hidinput->input->ledbit[i]; 1797 1798 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1799 r |= hidinput->input->sndbit[i]; 1800 1801 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1802 r |= hidinput->input->ffbit[i]; 1803 1804 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1805 r |= hidinput->input->swbit[i]; 1806 1807 return !!r; 1808 } 1809 1810 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1811 struct hid_input *hidinput) 1812 { 1813 struct hid_report *report; 1814 int i, k; 1815 1816 list_del(&hidinput->list); 1817 input_free_device(hidinput->input); 1818 kfree(hidinput->name); 1819 1820 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1821 if (k == HID_OUTPUT_REPORT && 1822 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1823 continue; 1824 1825 list_for_each_entry(report, &hid->report_enum[k].report_list, 1826 list) { 1827 1828 for (i = 0; i < report->maxfield; i++) 1829 if (report->field[i]->hidinput == hidinput) 1830 report->field[i]->hidinput = NULL; 1831 } 1832 } 1833 1834 kfree(hidinput); 1835 } 1836 1837 static struct hid_input *hidinput_match(struct hid_report *report) 1838 { 1839 struct hid_device *hid = report->device; 1840 struct hid_input *hidinput; 1841 1842 list_for_each_entry(hidinput, &hid->inputs, list) { 1843 if (hidinput->report && 1844 hidinput->report->id == report->id) 1845 return hidinput; 1846 } 1847 1848 return NULL; 1849 } 1850 1851 static struct hid_input *hidinput_match_application(struct hid_report *report) 1852 { 1853 struct hid_device *hid = report->device; 1854 struct hid_input *hidinput; 1855 1856 list_for_each_entry(hidinput, &hid->inputs, list) { 1857 if (hidinput->application == report->application) 1858 return hidinput; 1859 1860 /* 1861 * Keep SystemControl and ConsumerControl applications together 1862 * with the main keyboard, if present. 1863 */ 1864 if ((report->application == HID_GD_SYSTEM_CONTROL || 1865 report->application == HID_CP_CONSUMER_CONTROL) && 1866 hidinput->application == HID_GD_KEYBOARD) { 1867 return hidinput; 1868 } 1869 } 1870 1871 return NULL; 1872 } 1873 1874 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1875 struct hid_report *report) 1876 { 1877 int i, j; 1878 1879 for (i = 0; i < report->maxfield; i++) 1880 for (j = 0; j < report->field[i]->maxusage; j++) 1881 hidinput_configure_usage(hidinput, report->field[i], 1882 report->field[i]->usage + j); 1883 } 1884 1885 /* 1886 * Register the input device; print a message. 1887 * Configure the input layer interface 1888 * Read all reports and initialize the absolute field values. 1889 */ 1890 1891 int hidinput_connect(struct hid_device *hid, unsigned int force) 1892 { 1893 struct hid_driver *drv = hid->driver; 1894 struct hid_report *report; 1895 struct hid_input *next, *hidinput = NULL; 1896 unsigned int application; 1897 int i, k; 1898 1899 INIT_LIST_HEAD(&hid->inputs); 1900 INIT_WORK(&hid->led_work, hidinput_led_worker); 1901 1902 hid->status &= ~HID_STAT_DUP_DETECTED; 1903 1904 if (!force) { 1905 for (i = 0; i < hid->maxcollection; i++) { 1906 struct hid_collection *col = &hid->collection[i]; 1907 if (col->type == HID_COLLECTION_APPLICATION || 1908 col->type == HID_COLLECTION_PHYSICAL) 1909 if (IS_INPUT_APPLICATION(col->usage)) 1910 break; 1911 } 1912 1913 if (i == hid->maxcollection) 1914 return -1; 1915 } 1916 1917 report_features(hid); 1918 1919 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1920 if (k == HID_OUTPUT_REPORT && 1921 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1922 continue; 1923 1924 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1925 1926 if (!report->maxfield) 1927 continue; 1928 1929 application = report->application; 1930 1931 /* 1932 * Find the previous hidinput report attached 1933 * to this report id. 1934 */ 1935 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1936 hidinput = hidinput_match(report); 1937 else if (hid->maxapplication > 1 && 1938 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1939 hidinput = hidinput_match_application(report); 1940 1941 if (!hidinput) { 1942 hidinput = hidinput_allocate(hid, application); 1943 if (!hidinput) 1944 goto out_unwind; 1945 } 1946 1947 hidinput_configure_usages(hidinput, report); 1948 1949 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1950 hidinput->report = report; 1951 1952 list_add_tail(&report->hidinput_list, 1953 &hidinput->reports); 1954 } 1955 } 1956 1957 hidinput_change_resolution_multipliers(hid); 1958 1959 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1960 if (drv->input_configured && 1961 drv->input_configured(hid, hidinput)) 1962 goto out_unwind; 1963 1964 if (!hidinput_has_been_populated(hidinput)) { 1965 /* no need to register an input device not populated */ 1966 hidinput_cleanup_hidinput(hid, hidinput); 1967 continue; 1968 } 1969 1970 if (input_register_device(hidinput->input)) 1971 goto out_unwind; 1972 hidinput->registered = true; 1973 } 1974 1975 if (list_empty(&hid->inputs)) { 1976 hid_err(hid, "No inputs registered, leaving\n"); 1977 goto out_unwind; 1978 } 1979 1980 if (hid->status & HID_STAT_DUP_DETECTED) 1981 hid_dbg(hid, 1982 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 1983 1984 return 0; 1985 1986 out_unwind: 1987 /* unwind the ones we already registered */ 1988 hidinput_disconnect(hid); 1989 1990 return -1; 1991 } 1992 EXPORT_SYMBOL_GPL(hidinput_connect); 1993 1994 void hidinput_disconnect(struct hid_device *hid) 1995 { 1996 struct hid_input *hidinput, *next; 1997 1998 hidinput_cleanup_battery(hid); 1999 2000 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 2001 list_del(&hidinput->list); 2002 if (hidinput->registered) 2003 input_unregister_device(hidinput->input); 2004 else 2005 input_free_device(hidinput->input); 2006 kfree(hidinput->name); 2007 kfree(hidinput); 2008 } 2009 2010 /* led_work is spawned by input_dev callbacks, but doesn't access the 2011 * parent input_dev at all. Once all input devices are removed, we 2012 * know that led_work will never get restarted, so we can cancel it 2013 * synchronously and are safe. */ 2014 cancel_work_sync(&hid->led_work); 2015 } 2016 EXPORT_SYMBOL_GPL(hidinput_disconnect); 2017