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 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN), 330 HID_BATTERY_QUIRK_IGNORE }, 331 {} 332 }; 333 334 static unsigned find_battery_quirk(struct hid_device *hdev) 335 { 336 unsigned quirks = 0; 337 const struct hid_device_id *match; 338 339 match = hid_match_id(hdev, hid_battery_quirks); 340 if (match != NULL) 341 quirks = match->driver_data; 342 343 return quirks; 344 } 345 346 static int hidinput_scale_battery_capacity(struct hid_device *dev, 347 int value) 348 { 349 if (dev->battery_min < dev->battery_max && 350 value >= dev->battery_min && value <= dev->battery_max) 351 value = ((value - dev->battery_min) * 100) / 352 (dev->battery_max - dev->battery_min); 353 354 return value; 355 } 356 357 static int hidinput_query_battery_capacity(struct hid_device *dev) 358 { 359 u8 *buf; 360 int ret; 361 362 buf = kmalloc(4, GFP_KERNEL); 363 if (!buf) 364 return -ENOMEM; 365 366 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4, 367 dev->battery_report_type, HID_REQ_GET_REPORT); 368 if (ret < 2) { 369 kfree(buf); 370 return -ENODATA; 371 } 372 373 ret = hidinput_scale_battery_capacity(dev, buf[1]); 374 kfree(buf); 375 return ret; 376 } 377 378 static int hidinput_get_battery_property(struct power_supply *psy, 379 enum power_supply_property prop, 380 union power_supply_propval *val) 381 { 382 struct hid_device *dev = power_supply_get_drvdata(psy); 383 int value; 384 int ret = 0; 385 386 switch (prop) { 387 case POWER_SUPPLY_PROP_PRESENT: 388 case POWER_SUPPLY_PROP_ONLINE: 389 val->intval = 1; 390 break; 391 392 case POWER_SUPPLY_PROP_CAPACITY: 393 if (dev->battery_status != HID_BATTERY_REPORTED && 394 !dev->battery_avoid_query) { 395 value = hidinput_query_battery_capacity(dev); 396 if (value < 0) 397 return value; 398 } else { 399 value = dev->battery_capacity; 400 } 401 402 val->intval = value; 403 break; 404 405 case POWER_SUPPLY_PROP_MODEL_NAME: 406 val->strval = dev->name; 407 break; 408 409 case POWER_SUPPLY_PROP_STATUS: 410 if (dev->battery_status != HID_BATTERY_REPORTED && 411 !dev->battery_avoid_query) { 412 value = hidinput_query_battery_capacity(dev); 413 if (value < 0) 414 return value; 415 416 dev->battery_capacity = value; 417 dev->battery_status = HID_BATTERY_QUERIED; 418 } 419 420 if (dev->battery_status == HID_BATTERY_UNKNOWN) 421 val->intval = POWER_SUPPLY_STATUS_UNKNOWN; 422 else if (dev->battery_capacity == 100) 423 val->intval = POWER_SUPPLY_STATUS_FULL; 424 else 425 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 426 break; 427 428 case POWER_SUPPLY_PROP_SCOPE: 429 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 430 break; 431 432 default: 433 ret = -EINVAL; 434 break; 435 } 436 437 return ret; 438 } 439 440 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 441 struct hid_field *field, bool is_percentage) 442 { 443 struct power_supply_desc *psy_desc; 444 struct power_supply_config psy_cfg = { .drv_data = dev, }; 445 unsigned quirks; 446 s32 min, max; 447 int error; 448 449 if (dev->battery) 450 return 0; /* already initialized? */ 451 452 quirks = find_battery_quirk(dev); 453 454 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 455 dev->bus, dev->vendor, dev->product, dev->version, quirks); 456 457 if (quirks & HID_BATTERY_QUIRK_IGNORE) 458 return 0; 459 460 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); 461 if (!psy_desc) 462 return -ENOMEM; 463 464 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", 465 strlen(dev->uniq) ? 466 dev->uniq : dev_name(&dev->dev)); 467 if (!psy_desc->name) { 468 error = -ENOMEM; 469 goto err_free_mem; 470 } 471 472 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 473 psy_desc->properties = hidinput_battery_props; 474 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); 475 psy_desc->use_for_apm = 0; 476 psy_desc->get_property = hidinput_get_battery_property; 477 478 min = field->logical_minimum; 479 max = field->logical_maximum; 480 481 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) { 482 min = 0; 483 max = 100; 484 } 485 486 if (quirks & HID_BATTERY_QUIRK_FEATURE) 487 report_type = HID_FEATURE_REPORT; 488 489 dev->battery_min = min; 490 dev->battery_max = max; 491 dev->battery_report_type = report_type; 492 dev->battery_report_id = field->report->id; 493 494 /* 495 * Stylus is normally not connected to the device and thus we 496 * can't query the device and get meaningful battery strength. 497 * We have to wait for the device to report it on its own. 498 */ 499 dev->battery_avoid_query = report_type == HID_INPUT_REPORT && 500 field->physical == HID_DG_STYLUS; 501 502 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); 503 if (IS_ERR(dev->battery)) { 504 error = PTR_ERR(dev->battery); 505 hid_warn(dev, "can't register power supply: %d\n", error); 506 goto err_free_name; 507 } 508 509 power_supply_powers(dev->battery, &dev->dev); 510 return 0; 511 512 err_free_name: 513 kfree(psy_desc->name); 514 err_free_mem: 515 kfree(psy_desc); 516 dev->battery = NULL; 517 return error; 518 } 519 520 static void hidinput_cleanup_battery(struct hid_device *dev) 521 { 522 const struct power_supply_desc *psy_desc; 523 524 if (!dev->battery) 525 return; 526 527 psy_desc = dev->battery->desc; 528 power_supply_unregister(dev->battery); 529 kfree(psy_desc->name); 530 kfree(psy_desc); 531 dev->battery = NULL; 532 } 533 534 static void hidinput_update_battery(struct hid_device *dev, int value) 535 { 536 int capacity; 537 538 if (!dev->battery) 539 return; 540 541 if (value == 0 || value < dev->battery_min || value > dev->battery_max) 542 return; 543 544 capacity = hidinput_scale_battery_capacity(dev, value); 545 546 if (dev->battery_status != HID_BATTERY_REPORTED || 547 capacity != dev->battery_capacity || 548 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) { 549 dev->battery_capacity = capacity; 550 dev->battery_status = HID_BATTERY_REPORTED; 551 dev->battery_ratelimit_time = 552 ktime_add_ms(ktime_get_coarse(), 30 * 1000); 553 power_supply_changed(dev->battery); 554 } 555 } 556 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 557 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 558 struct hid_field *field, bool is_percentage) 559 { 560 return 0; 561 } 562 563 static void hidinput_cleanup_battery(struct hid_device *dev) 564 { 565 } 566 567 static void hidinput_update_battery(struct hid_device *dev, int value) 568 { 569 } 570 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 571 572 static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field, 573 unsigned int type, unsigned int usage) 574 { 575 struct hid_collection *collection; 576 577 collection = &device->collection[field->usage->collection_index]; 578 579 return collection->type == type && collection->usage == usage; 580 } 581 582 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 583 struct hid_usage *usage) 584 { 585 struct input_dev *input = hidinput->input; 586 struct hid_device *device = input_get_drvdata(input); 587 int max = 0, code; 588 unsigned long *bit = NULL; 589 590 field->hidinput = hidinput; 591 592 if (field->flags & HID_MAIN_ITEM_CONSTANT) 593 goto ignore; 594 595 /* Ignore if report count is out of bounds. */ 596 if (field->report_count < 1) 597 goto ignore; 598 599 /* only LED usages are supported in output fields */ 600 if (field->report_type == HID_OUTPUT_REPORT && 601 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 602 goto ignore; 603 } 604 605 if (device->driver->input_mapping) { 606 int ret = device->driver->input_mapping(device, hidinput, field, 607 usage, &bit, &max); 608 if (ret > 0) 609 goto mapped; 610 if (ret < 0) 611 goto ignore; 612 } 613 614 switch (usage->hid & HID_USAGE_PAGE) { 615 case HID_UP_UNDEFINED: 616 goto ignore; 617 618 case HID_UP_KEYBOARD: 619 set_bit(EV_REP, input->evbit); 620 621 if ((usage->hid & HID_USAGE) < 256) { 622 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 623 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 624 } else 625 map_key(KEY_UNKNOWN); 626 627 break; 628 629 case HID_UP_BUTTON: 630 code = ((usage->hid - 1) & HID_USAGE); 631 632 switch (field->application) { 633 case HID_GD_MOUSE: 634 case HID_GD_POINTER: code += BTN_MOUSE; break; 635 case HID_GD_JOYSTICK: 636 if (code <= 0xf) 637 code += BTN_JOYSTICK; 638 else 639 code += BTN_TRIGGER_HAPPY - 0x10; 640 break; 641 case HID_GD_GAMEPAD: 642 if (code <= 0xf) 643 code += BTN_GAMEPAD; 644 else 645 code += BTN_TRIGGER_HAPPY - 0x10; 646 break; 647 case HID_CP_CONSUMER_CONTROL: 648 if (hidinput_field_in_collection(device, field, 649 HID_COLLECTION_NAMED_ARRAY, 650 HID_CP_PROGRAMMABLEBUTTONS)) { 651 if (code <= 0x1d) 652 code += KEY_MACRO1; 653 else 654 code += BTN_TRIGGER_HAPPY - 0x1e; 655 } else { 656 goto ignore; 657 } 658 break; 659 default: 660 switch (field->physical) { 661 case HID_GD_MOUSE: 662 case HID_GD_POINTER: code += BTN_MOUSE; break; 663 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 664 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 665 default: code += BTN_MISC; 666 } 667 } 668 669 map_key(code); 670 break; 671 672 case HID_UP_SIMULATION: 673 switch (usage->hid & 0xffff) { 674 case 0xba: map_abs(ABS_RUDDER); break; 675 case 0xbb: map_abs(ABS_THROTTLE); break; 676 case 0xc4: map_abs(ABS_GAS); break; 677 case 0xc5: map_abs(ABS_BRAKE); break; 678 case 0xc8: map_abs(ABS_WHEEL); break; 679 default: goto ignore; 680 } 681 break; 682 683 case HID_UP_GENDESK: 684 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 685 switch (usage->hid & 0xf) { 686 case 0x1: map_key_clear(KEY_POWER); break; 687 case 0x2: map_key_clear(KEY_SLEEP); break; 688 case 0x3: map_key_clear(KEY_WAKEUP); break; 689 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 690 case 0x5: map_key_clear(KEY_MENU); break; 691 case 0x6: map_key_clear(KEY_PROG1); break; 692 case 0x7: map_key_clear(KEY_HELP); break; 693 case 0x8: map_key_clear(KEY_EXIT); break; 694 case 0x9: map_key_clear(KEY_SELECT); break; 695 case 0xa: map_key_clear(KEY_RIGHT); break; 696 case 0xb: map_key_clear(KEY_LEFT); break; 697 case 0xc: map_key_clear(KEY_UP); break; 698 case 0xd: map_key_clear(KEY_DOWN); break; 699 case 0xe: map_key_clear(KEY_POWER2); break; 700 case 0xf: map_key_clear(KEY_RESTART); break; 701 default: goto unknown; 702 } 703 break; 704 } 705 706 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */ 707 switch (usage->hid & 0xf) { 708 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break; 709 default: goto ignore; 710 } 711 break; 712 } 713 714 /* 715 * Some lazy vendors declare 255 usages for System Control, 716 * leading to the creation of ABS_X|Y axis and too many others. 717 * It wouldn't be a problem if joydev doesn't consider the 718 * device as a joystick then. 719 */ 720 if (field->application == HID_GD_SYSTEM_CONTROL) 721 goto ignore; 722 723 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 724 switch (usage->hid) { 725 case HID_GD_UP: usage->hat_dir = 1; break; 726 case HID_GD_DOWN: usage->hat_dir = 5; break; 727 case HID_GD_RIGHT: usage->hat_dir = 3; break; 728 case HID_GD_LEFT: usage->hat_dir = 7; break; 729 default: goto unknown; 730 } 731 if (field->dpad) { 732 map_abs(field->dpad); 733 goto ignore; 734 } 735 map_abs(ABS_HAT0X); 736 break; 737 } 738 739 switch (usage->hid) { 740 /* These usage IDs map directly to the usage codes. */ 741 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 742 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 743 if (field->flags & HID_MAIN_ITEM_RELATIVE) 744 map_rel(usage->hid & 0xf); 745 else 746 map_abs_clear(usage->hid & 0xf); 747 break; 748 749 case HID_GD_WHEEL: 750 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 751 set_bit(REL_WHEEL, input->relbit); 752 map_rel(REL_WHEEL_HI_RES); 753 } else { 754 map_abs(usage->hid & 0xf); 755 } 756 break; 757 case HID_GD_SLIDER: case HID_GD_DIAL: 758 if (field->flags & HID_MAIN_ITEM_RELATIVE) 759 map_rel(usage->hid & 0xf); 760 else 761 map_abs(usage->hid & 0xf); 762 break; 763 764 case HID_GD_HATSWITCH: 765 usage->hat_min = field->logical_minimum; 766 usage->hat_max = field->logical_maximum; 767 map_abs(ABS_HAT0X); 768 break; 769 770 case HID_GD_START: map_key_clear(BTN_START); break; 771 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 772 773 case HID_GD_RFKILL_BTN: 774 /* MS wireless radio ctl extension, also check CA */ 775 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 776 map_key_clear(KEY_RFKILL); 777 /* We need to simulate the btn release */ 778 field->flags |= HID_MAIN_ITEM_RELATIVE; 779 break; 780 } 781 goto unknown; 782 783 default: goto unknown; 784 } 785 786 break; 787 788 case HID_UP_LED: 789 switch (usage->hid & 0xffff) { /* HID-Value: */ 790 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 791 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 792 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 793 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 794 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 795 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 796 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 797 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 798 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 799 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 800 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 801 802 default: goto ignore; 803 } 804 break; 805 806 case HID_UP_DIGITIZER: 807 if ((field->application & 0xff) == 0x01) /* Digitizer */ 808 __set_bit(INPUT_PROP_POINTER, input->propbit); 809 else if ((field->application & 0xff) == 0x02) /* Pen */ 810 __set_bit(INPUT_PROP_DIRECT, input->propbit); 811 812 switch (usage->hid & 0xff) { 813 case 0x00: /* Undefined */ 814 goto ignore; 815 816 case 0x30: /* TipPressure */ 817 if (!test_bit(BTN_TOUCH, input->keybit)) { 818 device->quirks |= HID_QUIRK_NOTOUCH; 819 set_bit(EV_KEY, input->evbit); 820 set_bit(BTN_TOUCH, input->keybit); 821 } 822 map_abs_clear(ABS_PRESSURE); 823 break; 824 825 case 0x32: /* InRange */ 826 switch (field->physical & 0xff) { 827 case 0x21: map_key(BTN_TOOL_MOUSE); break; 828 case 0x22: map_key(BTN_TOOL_FINGER); break; 829 default: map_key(BTN_TOOL_PEN); break; 830 } 831 break; 832 833 case 0x3b: /* Battery Strength */ 834 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false); 835 usage->type = EV_PWR; 836 return; 837 838 case 0x3c: /* Invert */ 839 map_key_clear(BTN_TOOL_RUBBER); 840 break; 841 842 case 0x3d: /* X Tilt */ 843 map_abs_clear(ABS_TILT_X); 844 break; 845 846 case 0x3e: /* Y Tilt */ 847 map_abs_clear(ABS_TILT_Y); 848 break; 849 850 case 0x33: /* Touch */ 851 case 0x42: /* TipSwitch */ 852 case 0x43: /* TipSwitch2 */ 853 device->quirks &= ~HID_QUIRK_NOTOUCH; 854 map_key_clear(BTN_TOUCH); 855 break; 856 857 case 0x44: /* BarrelSwitch */ 858 map_key_clear(BTN_STYLUS); 859 break; 860 861 case 0x45: /* ERASER */ 862 /* 863 * This event is reported when eraser tip touches the surface. 864 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when 865 * tool gets in proximity. 866 */ 867 map_key_clear(BTN_TOUCH); 868 break; 869 870 case 0x46: /* TabletPick */ 871 case 0x5a: /* SecondaryBarrelSwitch */ 872 map_key_clear(BTN_STYLUS2); 873 break; 874 875 case 0x5b: /* TransducerSerialNumber */ 876 usage->type = EV_MSC; 877 usage->code = MSC_SERIAL; 878 bit = input->mscbit; 879 max = MSC_MAX; 880 break; 881 882 default: goto unknown; 883 } 884 break; 885 886 case HID_UP_TELEPHONY: 887 switch (usage->hid & HID_USAGE) { 888 case 0x2f: map_key_clear(KEY_MICMUTE); break; 889 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 890 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 891 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 892 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 893 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 894 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 895 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 896 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 897 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 898 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 899 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 900 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 901 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 902 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 903 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 904 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 905 default: goto ignore; 906 } 907 break; 908 909 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 910 switch (usage->hid & HID_USAGE) { 911 case 0x000: goto ignore; 912 case 0x030: map_key_clear(KEY_POWER); break; 913 case 0x031: map_key_clear(KEY_RESTART); break; 914 case 0x032: map_key_clear(KEY_SLEEP); break; 915 case 0x034: map_key_clear(KEY_SLEEP); break; 916 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 917 case 0x036: map_key_clear(BTN_MISC); break; 918 919 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 920 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 921 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 922 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 923 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 924 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 925 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 926 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 927 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 928 929 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 930 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 931 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 932 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 933 case 0x069: map_key_clear(KEY_RED); break; 934 case 0x06a: map_key_clear(KEY_GREEN); break; 935 case 0x06b: map_key_clear(KEY_BLUE); break; 936 case 0x06c: map_key_clear(KEY_YELLOW); break; 937 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break; 938 939 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 940 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 941 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 942 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 943 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 944 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 945 946 case 0x079: map_key_clear(KEY_KBDILLUMUP); break; 947 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break; 948 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break; 949 950 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 951 case 0x083: map_key_clear(KEY_LAST); break; 952 case 0x084: map_key_clear(KEY_ENTER); break; 953 case 0x088: map_key_clear(KEY_PC); break; 954 case 0x089: map_key_clear(KEY_TV); break; 955 case 0x08a: map_key_clear(KEY_WWW); break; 956 case 0x08b: map_key_clear(KEY_DVD); break; 957 case 0x08c: map_key_clear(KEY_PHONE); break; 958 case 0x08d: map_key_clear(KEY_PROGRAM); break; 959 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 960 case 0x08f: map_key_clear(KEY_GAMES); break; 961 case 0x090: map_key_clear(KEY_MEMO); break; 962 case 0x091: map_key_clear(KEY_CD); break; 963 case 0x092: map_key_clear(KEY_VCR); break; 964 case 0x093: map_key_clear(KEY_TUNER); break; 965 case 0x094: map_key_clear(KEY_EXIT); break; 966 case 0x095: map_key_clear(KEY_HELP); break; 967 case 0x096: map_key_clear(KEY_TAPE); break; 968 case 0x097: map_key_clear(KEY_TV2); break; 969 case 0x098: map_key_clear(KEY_SAT); break; 970 case 0x09a: map_key_clear(KEY_PVR); break; 971 972 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 973 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 974 case 0x0a0: map_key_clear(KEY_VCR2); break; 975 976 case 0x0b0: map_key_clear(KEY_PLAY); break; 977 case 0x0b1: map_key_clear(KEY_PAUSE); break; 978 case 0x0b2: map_key_clear(KEY_RECORD); break; 979 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 980 case 0x0b4: map_key_clear(KEY_REWIND); break; 981 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 982 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 983 case 0x0b7: map_key_clear(KEY_STOPCD); break; 984 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 985 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 986 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 987 case 0x0bf: map_key_clear(KEY_SLOW); break; 988 989 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 990 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 991 992 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break; 993 994 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 995 case 0x0e2: map_key_clear(KEY_MUTE); break; 996 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 997 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 998 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 999 case 0x0f5: map_key_clear(KEY_SLOW); break; 1000 1001 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 1002 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 1003 case 0x183: map_key_clear(KEY_CONFIG); break; 1004 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 1005 case 0x185: map_key_clear(KEY_EDITOR); break; 1006 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 1007 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 1008 case 0x188: map_key_clear(KEY_PRESENTATION); break; 1009 case 0x189: map_key_clear(KEY_DATABASE); break; 1010 case 0x18a: map_key_clear(KEY_MAIL); break; 1011 case 0x18b: map_key_clear(KEY_NEWS); break; 1012 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 1013 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 1014 case 0x18e: map_key_clear(KEY_CALENDAR); break; 1015 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 1016 case 0x190: map_key_clear(KEY_JOURNAL); break; 1017 case 0x191: map_key_clear(KEY_FINANCE); break; 1018 case 0x192: map_key_clear(KEY_CALC); break; 1019 case 0x193: map_key_clear(KEY_PLAYER); break; 1020 case 0x194: map_key_clear(KEY_FILE); break; 1021 case 0x196: map_key_clear(KEY_WWW); break; 1022 case 0x199: map_key_clear(KEY_CHAT); break; 1023 case 0x19c: map_key_clear(KEY_LOGOFF); break; 1024 case 0x19e: map_key_clear(KEY_COFFEE); break; 1025 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 1026 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 1027 case 0x1a3: map_key_clear(KEY_NEXT); break; 1028 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 1029 case 0x1a6: map_key_clear(KEY_HELP); break; 1030 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 1031 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 1032 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 1033 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 1034 case 0x1b4: map_key_clear(KEY_FILE); break; 1035 case 0x1b6: map_key_clear(KEY_IMAGES); break; 1036 case 0x1b7: map_key_clear(KEY_AUDIO); break; 1037 case 0x1b8: map_key_clear(KEY_VIDEO); break; 1038 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1039 case 0x1bd: map_key_clear(KEY_INFO); break; 1040 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1041 case 0x201: map_key_clear(KEY_NEW); break; 1042 case 0x202: map_key_clear(KEY_OPEN); break; 1043 case 0x203: map_key_clear(KEY_CLOSE); break; 1044 case 0x204: map_key_clear(KEY_EXIT); break; 1045 case 0x207: map_key_clear(KEY_SAVE); break; 1046 case 0x208: map_key_clear(KEY_PRINT); break; 1047 case 0x209: map_key_clear(KEY_PROPS); break; 1048 case 0x21a: map_key_clear(KEY_UNDO); break; 1049 case 0x21b: map_key_clear(KEY_COPY); break; 1050 case 0x21c: map_key_clear(KEY_CUT); break; 1051 case 0x21d: map_key_clear(KEY_PASTE); break; 1052 case 0x21f: map_key_clear(KEY_FIND); break; 1053 case 0x221: map_key_clear(KEY_SEARCH); break; 1054 case 0x222: map_key_clear(KEY_GOTO); break; 1055 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1056 case 0x224: map_key_clear(KEY_BACK); break; 1057 case 0x225: map_key_clear(KEY_FORWARD); break; 1058 case 0x226: map_key_clear(KEY_STOP); break; 1059 case 0x227: map_key_clear(KEY_REFRESH); break; 1060 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1061 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1062 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1063 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1064 case 0x232: map_key_clear(KEY_FULL_SCREEN); break; 1065 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1066 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1067 case 0x238: /* AC Pan */ 1068 set_bit(REL_HWHEEL, input->relbit); 1069 map_rel(REL_HWHEEL_HI_RES); 1070 break; 1071 case 0x23d: map_key_clear(KEY_EDIT); break; 1072 case 0x25f: map_key_clear(KEY_CANCEL); break; 1073 case 0x269: map_key_clear(KEY_INSERT); break; 1074 case 0x26a: map_key_clear(KEY_DELETE); break; 1075 case 0x279: map_key_clear(KEY_REDO); break; 1076 1077 case 0x289: map_key_clear(KEY_REPLY); break; 1078 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1079 case 0x28c: map_key_clear(KEY_SEND); break; 1080 1081 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break; 1082 1083 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1084 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1085 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1086 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1087 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1088 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1089 1090 case 0x29f: map_key_clear(KEY_SCALE); break; 1091 1092 default: map_key_clear(KEY_UNKNOWN); 1093 } 1094 break; 1095 1096 case HID_UP_GENDEVCTRLS: 1097 switch (usage->hid) { 1098 case HID_DC_BATTERYSTRENGTH: 1099 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false); 1100 usage->type = EV_PWR; 1101 return; 1102 } 1103 goto unknown; 1104 1105 case HID_UP_BATTERY: 1106 switch (usage->hid) { 1107 case HID_BAT_ABSOLUTESTATEOFCHARGE: 1108 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true); 1109 usage->type = EV_PWR; 1110 return; 1111 } 1112 goto unknown; 1113 1114 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1115 set_bit(EV_REP, input->evbit); 1116 switch (usage->hid & HID_USAGE) { 1117 case 0x021: map_key_clear(KEY_PRINT); break; 1118 case 0x070: map_key_clear(KEY_HP); break; 1119 case 0x071: map_key_clear(KEY_CAMERA); break; 1120 case 0x072: map_key_clear(KEY_SOUND); break; 1121 case 0x073: map_key_clear(KEY_QUESTION); break; 1122 case 0x080: map_key_clear(KEY_EMAIL); break; 1123 case 0x081: map_key_clear(KEY_CHAT); break; 1124 case 0x082: map_key_clear(KEY_SEARCH); break; 1125 case 0x083: map_key_clear(KEY_CONNECT); break; 1126 case 0x084: map_key_clear(KEY_FINANCE); break; 1127 case 0x085: map_key_clear(KEY_SPORT); break; 1128 case 0x086: map_key_clear(KEY_SHOP); break; 1129 default: goto ignore; 1130 } 1131 break; 1132 1133 case HID_UP_HPVENDOR2: 1134 set_bit(EV_REP, input->evbit); 1135 switch (usage->hid & HID_USAGE) { 1136 case 0x001: map_key_clear(KEY_MICMUTE); break; 1137 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1138 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1139 default: goto ignore; 1140 } 1141 break; 1142 1143 case HID_UP_MSVENDOR: 1144 goto ignore; 1145 1146 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1147 set_bit(EV_REP, input->evbit); 1148 goto ignore; 1149 1150 case HID_UP_LOGIVENDOR: 1151 /* intentional fallback */ 1152 case HID_UP_LOGIVENDOR2: 1153 /* intentional fallback */ 1154 case HID_UP_LOGIVENDOR3: 1155 goto ignore; 1156 1157 case HID_UP_PID: 1158 switch (usage->hid & HID_USAGE) { 1159 case 0xa4: map_key_clear(BTN_DEAD); break; 1160 default: goto ignore; 1161 } 1162 break; 1163 1164 default: 1165 unknown: 1166 if (field->report_size == 1) { 1167 if (field->report->type == HID_OUTPUT_REPORT) { 1168 map_led(LED_MISC); 1169 break; 1170 } 1171 map_key(BTN_MISC); 1172 break; 1173 } 1174 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1175 map_rel(REL_MISC); 1176 break; 1177 } 1178 map_abs(ABS_MISC); 1179 break; 1180 } 1181 1182 mapped: 1183 /* Mapping failed, bail out */ 1184 if (!bit) 1185 return; 1186 1187 if (device->driver->input_mapped && 1188 device->driver->input_mapped(device, hidinput, field, usage, 1189 &bit, &max) < 0) { 1190 /* 1191 * The driver indicated that no further generic handling 1192 * of the usage is desired. 1193 */ 1194 return; 1195 } 1196 1197 set_bit(usage->type, input->evbit); 1198 1199 /* 1200 * This part is *really* controversial: 1201 * - HID aims at being generic so we should do our best to export 1202 * all incoming events 1203 * - HID describes what events are, so there is no reason for ABS_X 1204 * to be mapped to ABS_Y 1205 * - HID is using *_MISC+N as a default value, but nothing prevents 1206 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1207 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1208 * processing) 1209 * 1210 * If devices still want to use this (at their own risk), they will 1211 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1212 * the default should be a reliable mapping. 1213 */ 1214 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1215 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1216 usage->code = find_next_zero_bit(bit, 1217 max + 1, 1218 usage->code); 1219 } else { 1220 device->status |= HID_STAT_DUP_DETECTED; 1221 goto ignore; 1222 } 1223 } 1224 1225 if (usage->code > max) 1226 goto ignore; 1227 1228 if (usage->type == EV_ABS) { 1229 1230 int a = field->logical_minimum; 1231 int b = field->logical_maximum; 1232 1233 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1234 a = field->logical_minimum = 0; 1235 b = field->logical_maximum = 255; 1236 } 1237 1238 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1239 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1240 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1241 1242 input_abs_set_res(input, usage->code, 1243 hidinput_calc_abs_res(field, usage->code)); 1244 1245 /* use a larger default input buffer for MT devices */ 1246 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1247 input_set_events_per_packet(input, 60); 1248 } 1249 1250 if (usage->type == EV_ABS && 1251 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1252 int i; 1253 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1254 input_set_abs_params(input, i, -1, 1, 0, 0); 1255 set_bit(i, input->absbit); 1256 } 1257 if (usage->hat_dir && !field->dpad) 1258 field->dpad = usage->code; 1259 } 1260 1261 /* for those devices which produce Consumer volume usage as relative, 1262 * we emulate pressing volumeup/volumedown appropriate number of times 1263 * in hidinput_hid_event() 1264 */ 1265 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1266 (usage->code == ABS_VOLUME)) { 1267 set_bit(KEY_VOLUMEUP, input->keybit); 1268 set_bit(KEY_VOLUMEDOWN, input->keybit); 1269 } 1270 1271 if (usage->type == EV_KEY) { 1272 set_bit(EV_MSC, input->evbit); 1273 set_bit(MSC_SCAN, input->mscbit); 1274 } 1275 1276 return; 1277 1278 ignore: 1279 usage->type = 0; 1280 usage->code = 0; 1281 } 1282 1283 static void hidinput_handle_scroll(struct hid_usage *usage, 1284 struct input_dev *input, 1285 __s32 value) 1286 { 1287 int code; 1288 int hi_res, lo_res; 1289 1290 if (value == 0) 1291 return; 1292 1293 if (usage->code == REL_WHEEL_HI_RES) 1294 code = REL_WHEEL; 1295 else 1296 code = REL_HWHEEL; 1297 1298 /* 1299 * Windows reports one wheel click as value 120. Where a high-res 1300 * scroll wheel is present, a fraction of 120 is reported instead. 1301 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1302 * adhere to the 120 expectation. 1303 */ 1304 hi_res = value * 120/usage->resolution_multiplier; 1305 1306 usage->wheel_accumulated += hi_res; 1307 lo_res = usage->wheel_accumulated/120; 1308 if (lo_res) 1309 usage->wheel_accumulated -= lo_res * 120; 1310 1311 input_event(input, EV_REL, code, lo_res); 1312 input_event(input, EV_REL, usage->code, hi_res); 1313 } 1314 1315 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1316 { 1317 struct input_dev *input; 1318 unsigned *quirks = &hid->quirks; 1319 1320 if (!usage->type) 1321 return; 1322 1323 if (usage->type == EV_PWR) { 1324 hidinput_update_battery(hid, value); 1325 return; 1326 } 1327 1328 if (!field->hidinput) 1329 return; 1330 1331 input = field->hidinput->input; 1332 1333 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1334 int hat_dir = usage->hat_dir; 1335 if (!hat_dir) 1336 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1337 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1338 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1339 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1340 return; 1341 } 1342 1343 if (usage->hid == HID_DG_INVERT) { 1344 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1345 return; 1346 } 1347 1348 if (usage->hid == HID_DG_INRANGE) { 1349 if (value) { 1350 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1351 return; 1352 } 1353 input_event(input, usage->type, usage->code, 0); 1354 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1355 return; 1356 } 1357 1358 if (usage->hid == HID_DG_TIPPRESSURE && (*quirks & HID_QUIRK_NOTOUCH)) { 1359 int a = field->logical_minimum; 1360 int b = field->logical_maximum; 1361 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1362 } 1363 1364 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1365 dbg_hid("Maximum Effects - %d\n",value); 1366 return; 1367 } 1368 1369 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1370 dbg_hid("PID Pool Report\n"); 1371 return; 1372 } 1373 1374 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1375 return; 1376 1377 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1378 usage->code == REL_HWHEEL_HI_RES)) { 1379 hidinput_handle_scroll(usage, input, value); 1380 return; 1381 } 1382 1383 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1384 (usage->code == ABS_VOLUME)) { 1385 int count = abs(value); 1386 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1387 int i; 1388 1389 for (i = 0; i < count; i++) { 1390 input_event(input, EV_KEY, direction, 1); 1391 input_sync(input); 1392 input_event(input, EV_KEY, direction, 0); 1393 input_sync(input); 1394 } 1395 return; 1396 } 1397 1398 /* 1399 * Ignore out-of-range values as per HID specification, 1400 * section 5.10 and 6.2.25, when NULL state bit is present. 1401 * When it's not, clamp the value to match Microsoft's input 1402 * driver as mentioned in "Required HID usages for digitizers": 1403 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1404 * 1405 * The logical_minimum < logical_maximum check is done so that we 1406 * don't unintentionally discard values sent by devices which 1407 * don't specify logical min and max. 1408 */ 1409 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1410 (field->logical_minimum < field->logical_maximum)) { 1411 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1412 (value < field->logical_minimum || 1413 value > field->logical_maximum)) { 1414 dbg_hid("Ignoring out-of-range value %x\n", value); 1415 return; 1416 } 1417 value = clamp(value, 1418 field->logical_minimum, 1419 field->logical_maximum); 1420 } 1421 1422 /* 1423 * Ignore reports for absolute data if the data didn't change. This is 1424 * not only an optimization but also fixes 'dead' key reports. Some 1425 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1426 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1427 * can only have one of them physically available. The 'dead' keys 1428 * report constant 0. As all map to the same keycode, they'd confuse 1429 * the input layer. If we filter the 'dead' keys on the HID level, we 1430 * skip the keycode translation and only forward real events. 1431 */ 1432 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1433 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1434 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1435 usage->usage_index < field->maxusage && 1436 value == field->value[usage->usage_index]) 1437 return; 1438 1439 /* report the usage code as scancode if the key status has changed */ 1440 if (usage->type == EV_KEY && 1441 (!test_bit(usage->code, input->key)) == value) 1442 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1443 1444 input_event(input, usage->type, usage->code, value); 1445 1446 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1447 usage->type == EV_KEY && value) { 1448 input_sync(input); 1449 input_event(input, usage->type, usage->code, 0); 1450 } 1451 } 1452 1453 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1454 { 1455 struct hid_input *hidinput; 1456 1457 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1458 return; 1459 1460 list_for_each_entry(hidinput, &hid->inputs, list) 1461 input_sync(hidinput->input); 1462 } 1463 EXPORT_SYMBOL_GPL(hidinput_report_event); 1464 1465 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1466 { 1467 struct hid_report *report; 1468 int i, j; 1469 1470 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, 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 == type && (*field)->usage[j].code == code) 1475 return j; 1476 } 1477 } 1478 return -1; 1479 } 1480 EXPORT_SYMBOL_GPL(hidinput_find_field); 1481 1482 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1483 { 1484 struct hid_report *report; 1485 struct hid_field *field; 1486 int i, j; 1487 1488 list_for_each_entry(report, 1489 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1490 list) { 1491 for (i = 0; i < report->maxfield; i++) { 1492 field = report->field[i]; 1493 for (j = 0; j < field->maxusage; j++) 1494 if (field->usage[j].type == EV_LED) 1495 return field; 1496 } 1497 } 1498 return NULL; 1499 } 1500 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1501 1502 unsigned int hidinput_count_leds(struct hid_device *hid) 1503 { 1504 struct hid_report *report; 1505 struct hid_field *field; 1506 int i, j; 1507 unsigned int count = 0; 1508 1509 list_for_each_entry(report, 1510 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1511 list) { 1512 for (i = 0; i < report->maxfield; i++) { 1513 field = report->field[i]; 1514 for (j = 0; j < field->maxusage; j++) 1515 if (field->usage[j].type == EV_LED && 1516 field->value[j]) 1517 count += 1; 1518 } 1519 } 1520 return count; 1521 } 1522 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1523 1524 static void hidinput_led_worker(struct work_struct *work) 1525 { 1526 struct hid_device *hid = container_of(work, struct hid_device, 1527 led_work); 1528 struct hid_field *field; 1529 struct hid_report *report; 1530 int ret; 1531 u32 len; 1532 __u8 *buf; 1533 1534 field = hidinput_get_led_field(hid); 1535 if (!field) 1536 return; 1537 1538 /* 1539 * field->report is accessed unlocked regarding HID core. So there might 1540 * be another incoming SET-LED request from user-space, which changes 1541 * the LED state while we assemble our outgoing buffer. However, this 1542 * doesn't matter as hid_output_report() correctly converts it into a 1543 * boolean value no matter what information is currently set on the LED 1544 * field (even garbage). So the remote device will always get a valid 1545 * request. 1546 * And in case we send a wrong value, a next led worker is spawned 1547 * for every SET-LED request so the following worker will send the 1548 * correct value, guaranteed! 1549 */ 1550 1551 report = field->report; 1552 1553 /* use custom SET_REPORT request if possible (asynchronous) */ 1554 if (hid->ll_driver->request) 1555 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1556 1557 /* fall back to generic raw-output-report */ 1558 len = hid_report_len(report); 1559 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1560 if (!buf) 1561 return; 1562 1563 hid_output_report(report, buf); 1564 /* synchronous output report */ 1565 ret = hid_hw_output_report(hid, buf, len); 1566 if (ret == -ENOSYS) 1567 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1568 HID_REQ_SET_REPORT); 1569 kfree(buf); 1570 } 1571 1572 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1573 unsigned int code, int value) 1574 { 1575 struct hid_device *hid = input_get_drvdata(dev); 1576 struct hid_field *field; 1577 int offset; 1578 1579 if (type == EV_FF) 1580 return input_ff_event(dev, type, code, value); 1581 1582 if (type != EV_LED) 1583 return -1; 1584 1585 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1586 hid_warn(dev, "event field not found\n"); 1587 return -1; 1588 } 1589 1590 hid_set_field(field, offset, value); 1591 1592 schedule_work(&hid->led_work); 1593 return 0; 1594 } 1595 1596 static int hidinput_open(struct input_dev *dev) 1597 { 1598 struct hid_device *hid = input_get_drvdata(dev); 1599 1600 return hid_hw_open(hid); 1601 } 1602 1603 static void hidinput_close(struct input_dev *dev) 1604 { 1605 struct hid_device *hid = input_get_drvdata(dev); 1606 1607 hid_hw_close(hid); 1608 } 1609 1610 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1611 struct hid_report *report, bool use_logical_max) 1612 { 1613 struct hid_usage *usage; 1614 bool update_needed = false; 1615 bool get_report_completed = false; 1616 int i, j; 1617 1618 if (report->maxfield == 0) 1619 return false; 1620 1621 for (i = 0; i < report->maxfield; i++) { 1622 __s32 value = use_logical_max ? 1623 report->field[i]->logical_maximum : 1624 report->field[i]->logical_minimum; 1625 1626 /* There is no good reason for a Resolution 1627 * Multiplier to have a count other than 1. 1628 * Ignore that case. 1629 */ 1630 if (report->field[i]->report_count != 1) 1631 continue; 1632 1633 for (j = 0; j < report->field[i]->maxusage; j++) { 1634 usage = &report->field[i]->usage[j]; 1635 1636 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1637 continue; 1638 1639 /* 1640 * If we have more than one feature within this 1641 * report we need to fill in the bits from the 1642 * others before we can overwrite the ones for the 1643 * Resolution Multiplier. 1644 * 1645 * But if we're not allowed to read from the device, 1646 * we just bail. Such a device should not exist 1647 * anyway. 1648 */ 1649 if (!get_report_completed && report->maxfield > 1) { 1650 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) 1651 return update_needed; 1652 1653 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1654 hid_hw_wait(hid); 1655 get_report_completed = true; 1656 } 1657 1658 report->field[i]->value[j] = value; 1659 update_needed = true; 1660 } 1661 } 1662 1663 return update_needed; 1664 } 1665 1666 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1667 { 1668 struct hid_report_enum *rep_enum; 1669 struct hid_report *rep; 1670 int ret; 1671 1672 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1673 list_for_each_entry(rep, &rep_enum->report_list, list) { 1674 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1675 rep, true); 1676 1677 if (update_needed) { 1678 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1679 if (ret) { 1680 __hidinput_change_resolution_multipliers(hid, 1681 rep, false); 1682 return; 1683 } 1684 } 1685 } 1686 1687 /* refresh our structs */ 1688 hid_setup_resolution_multiplier(hid); 1689 } 1690 1691 static void report_features(struct hid_device *hid) 1692 { 1693 struct hid_driver *drv = hid->driver; 1694 struct hid_report_enum *rep_enum; 1695 struct hid_report *rep; 1696 struct hid_usage *usage; 1697 int i, j; 1698 1699 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1700 list_for_each_entry(rep, &rep_enum->report_list, list) 1701 for (i = 0; i < rep->maxfield; i++) { 1702 /* Ignore if report count is out of bounds. */ 1703 if (rep->field[i]->report_count < 1) 1704 continue; 1705 1706 for (j = 0; j < rep->field[i]->maxusage; j++) { 1707 usage = &rep->field[i]->usage[j]; 1708 1709 /* Verify if Battery Strength feature is available */ 1710 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1711 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1712 rep->field[i], false); 1713 1714 if (drv->feature_mapping) 1715 drv->feature_mapping(hid, rep->field[i], usage); 1716 } 1717 } 1718 } 1719 1720 static struct hid_input *hidinput_allocate(struct hid_device *hid, 1721 unsigned int application) 1722 { 1723 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1724 struct input_dev *input_dev = input_allocate_device(); 1725 const char *suffix = NULL; 1726 size_t suffix_len, name_len; 1727 1728 if (!hidinput || !input_dev) 1729 goto fail; 1730 1731 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1732 hid->maxapplication > 1) { 1733 switch (application) { 1734 case HID_GD_KEYBOARD: 1735 suffix = "Keyboard"; 1736 break; 1737 case HID_GD_KEYPAD: 1738 suffix = "Keypad"; 1739 break; 1740 case HID_GD_MOUSE: 1741 suffix = "Mouse"; 1742 break; 1743 case HID_DG_STYLUS: 1744 suffix = "Pen"; 1745 break; 1746 case HID_DG_TOUCHSCREEN: 1747 suffix = "Touchscreen"; 1748 break; 1749 case HID_DG_TOUCHPAD: 1750 suffix = "Touchpad"; 1751 break; 1752 case HID_GD_SYSTEM_CONTROL: 1753 suffix = "System Control"; 1754 break; 1755 case HID_CP_CONSUMER_CONTROL: 1756 suffix = "Consumer Control"; 1757 break; 1758 case HID_GD_WIRELESS_RADIO_CTLS: 1759 suffix = "Wireless Radio Control"; 1760 break; 1761 case HID_GD_SYSTEM_MULTIAXIS: 1762 suffix = "System Multi Axis"; 1763 break; 1764 default: 1765 break; 1766 } 1767 } 1768 1769 if (suffix) { 1770 name_len = strlen(hid->name); 1771 suffix_len = strlen(suffix); 1772 if ((name_len < suffix_len) || 1773 strcmp(hid->name + name_len - suffix_len, suffix)) { 1774 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1775 hid->name, suffix); 1776 if (!hidinput->name) 1777 goto fail; 1778 } 1779 } 1780 1781 input_set_drvdata(input_dev, hid); 1782 input_dev->event = hidinput_input_event; 1783 input_dev->open = hidinput_open; 1784 input_dev->close = hidinput_close; 1785 input_dev->setkeycode = hidinput_setkeycode; 1786 input_dev->getkeycode = hidinput_getkeycode; 1787 1788 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1789 input_dev->phys = hid->phys; 1790 input_dev->uniq = hid->uniq; 1791 input_dev->id.bustype = hid->bus; 1792 input_dev->id.vendor = hid->vendor; 1793 input_dev->id.product = hid->product; 1794 input_dev->id.version = hid->version; 1795 input_dev->dev.parent = &hid->dev; 1796 1797 hidinput->input = input_dev; 1798 hidinput->application = application; 1799 list_add_tail(&hidinput->list, &hid->inputs); 1800 1801 INIT_LIST_HEAD(&hidinput->reports); 1802 1803 return hidinput; 1804 1805 fail: 1806 kfree(hidinput); 1807 input_free_device(input_dev); 1808 hid_err(hid, "Out of memory during hid input probe\n"); 1809 return NULL; 1810 } 1811 1812 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1813 { 1814 int i; 1815 unsigned long r = 0; 1816 1817 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1818 r |= hidinput->input->evbit[i]; 1819 1820 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1821 r |= hidinput->input->keybit[i]; 1822 1823 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1824 r |= hidinput->input->relbit[i]; 1825 1826 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1827 r |= hidinput->input->absbit[i]; 1828 1829 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1830 r |= hidinput->input->mscbit[i]; 1831 1832 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1833 r |= hidinput->input->ledbit[i]; 1834 1835 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1836 r |= hidinput->input->sndbit[i]; 1837 1838 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1839 r |= hidinput->input->ffbit[i]; 1840 1841 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1842 r |= hidinput->input->swbit[i]; 1843 1844 return !!r; 1845 } 1846 1847 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1848 struct hid_input *hidinput) 1849 { 1850 struct hid_report *report; 1851 int i, k; 1852 1853 list_del(&hidinput->list); 1854 input_free_device(hidinput->input); 1855 kfree(hidinput->name); 1856 1857 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1858 if (k == HID_OUTPUT_REPORT && 1859 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1860 continue; 1861 1862 list_for_each_entry(report, &hid->report_enum[k].report_list, 1863 list) { 1864 1865 for (i = 0; i < report->maxfield; i++) 1866 if (report->field[i]->hidinput == hidinput) 1867 report->field[i]->hidinput = NULL; 1868 } 1869 } 1870 1871 kfree(hidinput); 1872 } 1873 1874 static struct hid_input *hidinput_match(struct hid_report *report) 1875 { 1876 struct hid_device *hid = report->device; 1877 struct hid_input *hidinput; 1878 1879 list_for_each_entry(hidinput, &hid->inputs, list) { 1880 if (hidinput->report && 1881 hidinput->report->id == report->id) 1882 return hidinput; 1883 } 1884 1885 return NULL; 1886 } 1887 1888 static struct hid_input *hidinput_match_application(struct hid_report *report) 1889 { 1890 struct hid_device *hid = report->device; 1891 struct hid_input *hidinput; 1892 1893 list_for_each_entry(hidinput, &hid->inputs, list) { 1894 if (hidinput->application == report->application) 1895 return hidinput; 1896 1897 /* 1898 * Keep SystemControl and ConsumerControl applications together 1899 * with the main keyboard, if present. 1900 */ 1901 if ((report->application == HID_GD_SYSTEM_CONTROL || 1902 report->application == HID_CP_CONSUMER_CONTROL) && 1903 hidinput->application == HID_GD_KEYBOARD) { 1904 return hidinput; 1905 } 1906 } 1907 1908 return NULL; 1909 } 1910 1911 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1912 struct hid_report *report) 1913 { 1914 int i, j; 1915 1916 for (i = 0; i < report->maxfield; i++) 1917 for (j = 0; j < report->field[i]->maxusage; j++) 1918 hidinput_configure_usage(hidinput, report->field[i], 1919 report->field[i]->usage + j); 1920 } 1921 1922 /* 1923 * Register the input device; print a message. 1924 * Configure the input layer interface 1925 * Read all reports and initialize the absolute field values. 1926 */ 1927 1928 int hidinput_connect(struct hid_device *hid, unsigned int force) 1929 { 1930 struct hid_driver *drv = hid->driver; 1931 struct hid_report *report; 1932 struct hid_input *next, *hidinput = NULL; 1933 unsigned int application; 1934 int i, k; 1935 1936 INIT_LIST_HEAD(&hid->inputs); 1937 INIT_WORK(&hid->led_work, hidinput_led_worker); 1938 1939 hid->status &= ~HID_STAT_DUP_DETECTED; 1940 1941 if (!force) { 1942 for (i = 0; i < hid->maxcollection; i++) { 1943 struct hid_collection *col = &hid->collection[i]; 1944 if (col->type == HID_COLLECTION_APPLICATION || 1945 col->type == HID_COLLECTION_PHYSICAL) 1946 if (IS_INPUT_APPLICATION(col->usage)) 1947 break; 1948 } 1949 1950 if (i == hid->maxcollection) 1951 return -1; 1952 } 1953 1954 report_features(hid); 1955 1956 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1957 if (k == HID_OUTPUT_REPORT && 1958 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1959 continue; 1960 1961 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1962 1963 if (!report->maxfield) 1964 continue; 1965 1966 application = report->application; 1967 1968 /* 1969 * Find the previous hidinput report attached 1970 * to this report id. 1971 */ 1972 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1973 hidinput = hidinput_match(report); 1974 else if (hid->maxapplication > 1 && 1975 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1976 hidinput = hidinput_match_application(report); 1977 1978 if (!hidinput) { 1979 hidinput = hidinput_allocate(hid, application); 1980 if (!hidinput) 1981 goto out_unwind; 1982 } 1983 1984 hidinput_configure_usages(hidinput, report); 1985 1986 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1987 hidinput->report = report; 1988 1989 list_add_tail(&report->hidinput_list, 1990 &hidinput->reports); 1991 } 1992 } 1993 1994 hidinput_change_resolution_multipliers(hid); 1995 1996 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1997 if (drv->input_configured && 1998 drv->input_configured(hid, hidinput)) 1999 goto out_unwind; 2000 2001 if (!hidinput_has_been_populated(hidinput)) { 2002 /* no need to register an input device not populated */ 2003 hidinput_cleanup_hidinput(hid, hidinput); 2004 continue; 2005 } 2006 2007 if (input_register_device(hidinput->input)) 2008 goto out_unwind; 2009 hidinput->registered = true; 2010 } 2011 2012 if (list_empty(&hid->inputs)) { 2013 hid_err(hid, "No inputs registered, leaving\n"); 2014 goto out_unwind; 2015 } 2016 2017 if (hid->status & HID_STAT_DUP_DETECTED) 2018 hid_dbg(hid, 2019 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 2020 2021 return 0; 2022 2023 out_unwind: 2024 /* unwind the ones we already registered */ 2025 hidinput_disconnect(hid); 2026 2027 return -1; 2028 } 2029 EXPORT_SYMBOL_GPL(hidinput_connect); 2030 2031 void hidinput_disconnect(struct hid_device *hid) 2032 { 2033 struct hid_input *hidinput, *next; 2034 2035 hidinput_cleanup_battery(hid); 2036 2037 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 2038 list_del(&hidinput->list); 2039 if (hidinput->registered) 2040 input_unregister_device(hidinput->input); 2041 else 2042 input_free_device(hidinput->input); 2043 kfree(hidinput->name); 2044 kfree(hidinput); 2045 } 2046 2047 /* led_work is spawned by input_dev callbacks, but doesn't access the 2048 * parent input_dev at all. Once all input devices are removed, we 2049 * know that led_work will never get restarted, so we can cancel it 2050 * synchronously and are safe. */ 2051 cancel_work_sync(&hid->led_work); 2052 } 2053 EXPORT_SYMBOL_GPL(hidinput_disconnect); 2054