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 27static 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 46static 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 61static 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 67static 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 76static bool match_index(struct hid_usage *usage, 77 unsigned int cur_idx, unsigned int idx) 78{ 79 return cur_idx == idx; 80} 81 82typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage, 83 unsigned int cur_idx, unsigned int val); 84 85static 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 114static 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 131static 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 152static 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} 281EXPORT_SYMBOL_GPL(hidinput_calc_abs_res); 282 283#ifdef CONFIG_HID_BATTERY_STRENGTH 284static 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 297static 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 334static 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 346static 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 357static 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 378static 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 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 438static 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 509err_free_name: 510 kfree(psy_desc->name); 511err_free_mem: 512 kfree(psy_desc); 513 dev->battery = NULL; 514 return error; 515} 516 517static 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 531static 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 dev->battery_capacity = capacity; 546 dev->battery_status = HID_BATTERY_REPORTED; 547 power_supply_changed(dev->battery); 548 } 549} 550#else /* !CONFIG_HID_BATTERY_STRENGTH */ 551static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 552 struct hid_field *field) 553{ 554 return 0; 555} 556 557static void hidinput_cleanup_battery(struct hid_device *dev) 558{ 559} 560 561static void hidinput_update_battery(struct hid_device *dev, int value) 562{ 563} 564#endif /* CONFIG_HID_BATTERY_STRENGTH */ 565 566static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 567 struct hid_usage *usage) 568{ 569 struct input_dev *input = hidinput->input; 570 struct hid_device *device = input_get_drvdata(input); 571 int max = 0, code; 572 unsigned long *bit = NULL; 573 574 field->hidinput = hidinput; 575 576 if (field->flags & HID_MAIN_ITEM_CONSTANT) 577 goto ignore; 578 579 /* Ignore if report count is out of bounds. */ 580 if (field->report_count < 1) 581 goto ignore; 582 583 /* only LED usages are supported in output fields */ 584 if (field->report_type == HID_OUTPUT_REPORT && 585 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 586 goto ignore; 587 } 588 589 if (device->driver->input_mapping) { 590 int ret = device->driver->input_mapping(device, hidinput, field, 591 usage, &bit, &max); 592 if (ret > 0) 593 goto mapped; 594 if (ret < 0) 595 goto ignore; 596 } 597 598 switch (usage->hid & HID_USAGE_PAGE) { 599 case HID_UP_UNDEFINED: 600 goto ignore; 601 602 case HID_UP_KEYBOARD: 603 set_bit(EV_REP, input->evbit); 604 605 if ((usage->hid & HID_USAGE) < 256) { 606 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 607 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 608 } else 609 map_key(KEY_UNKNOWN); 610 611 break; 612 613 case HID_UP_BUTTON: 614 code = ((usage->hid - 1) & HID_USAGE); 615 616 switch (field->application) { 617 case HID_GD_MOUSE: 618 case HID_GD_POINTER: code += BTN_MOUSE; break; 619 case HID_GD_JOYSTICK: 620 if (code <= 0xf) 621 code += BTN_JOYSTICK; 622 else 623 code += BTN_TRIGGER_HAPPY - 0x10; 624 break; 625 case HID_GD_GAMEPAD: 626 if (code <= 0xf) 627 code += BTN_GAMEPAD; 628 else 629 code += BTN_TRIGGER_HAPPY - 0x10; 630 break; 631 default: 632 switch (field->physical) { 633 case HID_GD_MOUSE: 634 case HID_GD_POINTER: code += BTN_MOUSE; break; 635 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 636 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 637 default: code += BTN_MISC; 638 } 639 } 640 641 map_key(code); 642 break; 643 644 case HID_UP_SIMULATION: 645 switch (usage->hid & 0xffff) { 646 case 0xba: map_abs(ABS_RUDDER); break; 647 case 0xbb: map_abs(ABS_THROTTLE); break; 648 case 0xc4: map_abs(ABS_GAS); break; 649 case 0xc5: map_abs(ABS_BRAKE); break; 650 case 0xc8: map_abs(ABS_WHEEL); break; 651 default: goto ignore; 652 } 653 break; 654 655 case HID_UP_GENDESK: 656 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 657 switch (usage->hid & 0xf) { 658 case 0x1: map_key_clear(KEY_POWER); break; 659 case 0x2: map_key_clear(KEY_SLEEP); break; 660 case 0x3: map_key_clear(KEY_WAKEUP); break; 661 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 662 case 0x5: map_key_clear(KEY_MENU); break; 663 case 0x6: map_key_clear(KEY_PROG1); break; 664 case 0x7: map_key_clear(KEY_HELP); break; 665 case 0x8: map_key_clear(KEY_EXIT); break; 666 case 0x9: map_key_clear(KEY_SELECT); break; 667 case 0xa: map_key_clear(KEY_RIGHT); break; 668 case 0xb: map_key_clear(KEY_LEFT); break; 669 case 0xc: map_key_clear(KEY_UP); break; 670 case 0xd: map_key_clear(KEY_DOWN); break; 671 case 0xe: map_key_clear(KEY_POWER2); break; 672 case 0xf: map_key_clear(KEY_RESTART); break; 673 default: goto unknown; 674 } 675 break; 676 } 677 678 if ((usage->hid & 0xf0) == 0xa0) { /* SystemControl */ 679 switch (usage->hid & 0xf) { 680 case 0x9: map_key_clear(KEY_MICMUTE); break; 681 default: goto ignore; 682 } 683 break; 684 } 685 686 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */ 687 switch (usage->hid & 0xf) { 688 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break; 689 default: goto ignore; 690 } 691 break; 692 } 693 694 /* 695 * Some lazy vendors declare 255 usages for System Control, 696 * leading to the creation of ABS_X|Y axis and too many others. 697 * It wouldn't be a problem if joydev doesn't consider the 698 * device as a joystick then. 699 */ 700 if (field->application == HID_GD_SYSTEM_CONTROL) 701 goto ignore; 702 703 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 704 switch (usage->hid) { 705 case HID_GD_UP: usage->hat_dir = 1; break; 706 case HID_GD_DOWN: usage->hat_dir = 5; break; 707 case HID_GD_RIGHT: usage->hat_dir = 3; break; 708 case HID_GD_LEFT: usage->hat_dir = 7; break; 709 default: goto unknown; 710 } 711 if (field->dpad) { 712 map_abs(field->dpad); 713 goto ignore; 714 } 715 map_abs(ABS_HAT0X); 716 break; 717 } 718 719 switch (usage->hid) { 720 /* These usage IDs map directly to the usage codes. */ 721 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 722 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 723 if (field->flags & HID_MAIN_ITEM_RELATIVE) 724 map_rel(usage->hid & 0xf); 725 else 726 map_abs_clear(usage->hid & 0xf); 727 break; 728 729 case HID_GD_WHEEL: 730 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 731 set_bit(REL_WHEEL, input->relbit); 732 map_rel(REL_WHEEL_HI_RES); 733 } else { 734 map_abs(usage->hid & 0xf); 735 } 736 break; 737 case HID_GD_SLIDER: case HID_GD_DIAL: 738 if (field->flags & HID_MAIN_ITEM_RELATIVE) 739 map_rel(usage->hid & 0xf); 740 else 741 map_abs(usage->hid & 0xf); 742 break; 743 744 case HID_GD_HATSWITCH: 745 usage->hat_min = field->logical_minimum; 746 usage->hat_max = field->logical_maximum; 747 map_abs(ABS_HAT0X); 748 break; 749 750 case HID_GD_START: map_key_clear(BTN_START); break; 751 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 752 753 case HID_GD_RFKILL_BTN: 754 /* MS wireless radio ctl extension, also check CA */ 755 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 756 map_key_clear(KEY_RFKILL); 757 /* We need to simulate the btn release */ 758 field->flags |= HID_MAIN_ITEM_RELATIVE; 759 break; 760 } 761 762 default: goto unknown; 763 } 764 765 break; 766 767 case HID_UP_LED: 768 switch (usage->hid & 0xffff) { /* HID-Value: */ 769 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 770 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 771 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 772 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 773 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 774 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 775 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 776 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 777 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 778 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 779 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 780 781 default: goto ignore; 782 } 783 break; 784 785 case HID_UP_DIGITIZER: 786 if ((field->application & 0xff) == 0x01) /* Digitizer */ 787 __set_bit(INPUT_PROP_POINTER, input->propbit); 788 else if ((field->application & 0xff) == 0x02) /* Pen */ 789 __set_bit(INPUT_PROP_DIRECT, input->propbit); 790 791 switch (usage->hid & 0xff) { 792 case 0x00: /* Undefined */ 793 goto ignore; 794 795 case 0x30: /* TipPressure */ 796 if (!test_bit(BTN_TOUCH, input->keybit)) { 797 device->quirks |= HID_QUIRK_NOTOUCH; 798 set_bit(EV_KEY, input->evbit); 799 set_bit(BTN_TOUCH, input->keybit); 800 } 801 map_abs_clear(ABS_PRESSURE); 802 break; 803 804 case 0x32: /* InRange */ 805 switch (field->physical & 0xff) { 806 case 0x21: map_key(BTN_TOOL_MOUSE); break; 807 case 0x22: map_key(BTN_TOOL_FINGER); break; 808 default: map_key(BTN_TOOL_PEN); break; 809 } 810 break; 811 812 case 0x3b: /* Battery Strength */ 813 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 814 usage->type = EV_PWR; 815 return; 816 817 case 0x3c: /* Invert */ 818 map_key_clear(BTN_TOOL_RUBBER); 819 break; 820 821 case 0x3d: /* X Tilt */ 822 map_abs_clear(ABS_TILT_X); 823 break; 824 825 case 0x3e: /* Y Tilt */ 826 map_abs_clear(ABS_TILT_Y); 827 break; 828 829 case 0x33: /* Touch */ 830 case 0x42: /* TipSwitch */ 831 case 0x43: /* TipSwitch2 */ 832 device->quirks &= ~HID_QUIRK_NOTOUCH; 833 map_key_clear(BTN_TOUCH); 834 break; 835 836 case 0x44: /* BarrelSwitch */ 837 map_key_clear(BTN_STYLUS); 838 break; 839 840 case 0x45: /* ERASER */ 841 /* 842 * This event is reported when eraser tip touches the surface. 843 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when 844 * tool gets in proximity. 845 */ 846 map_key_clear(BTN_TOUCH); 847 break; 848 849 case 0x46: /* TabletPick */ 850 case 0x5a: /* SecondaryBarrelSwitch */ 851 map_key_clear(BTN_STYLUS2); 852 break; 853 854 case 0x5b: /* TransducerSerialNumber */ 855 usage->type = EV_MSC; 856 usage->code = MSC_SERIAL; 857 bit = input->mscbit; 858 max = MSC_MAX; 859 break; 860 861 default: goto unknown; 862 } 863 break; 864 865 case HID_UP_TELEPHONY: 866 switch (usage->hid & HID_USAGE) { 867 case 0x2f: map_key_clear(KEY_MICMUTE); break; 868 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 869 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 870 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 871 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 872 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 873 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 874 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 875 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 876 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 877 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 878 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 879 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 880 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 881 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 882 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 883 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 884 default: goto ignore; 885 } 886 break; 887 888 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 889 switch (usage->hid & HID_USAGE) { 890 case 0x000: goto ignore; 891 case 0x030: map_key_clear(KEY_POWER); break; 892 case 0x031: map_key_clear(KEY_RESTART); break; 893 case 0x032: map_key_clear(KEY_SLEEP); break; 894 case 0x034: map_key_clear(KEY_SLEEP); break; 895 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 896 case 0x036: map_key_clear(BTN_MISC); break; 897 898 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 899 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 900 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 901 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 902 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 903 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 904 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 905 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 906 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 907 908 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 909 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 910 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 911 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 912 case 0x069: map_key_clear(KEY_RED); break; 913 case 0x06a: map_key_clear(KEY_GREEN); break; 914 case 0x06b: map_key_clear(KEY_BLUE); break; 915 case 0x06c: map_key_clear(KEY_YELLOW); break; 916 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break; 917 918 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 919 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 920 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 921 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 922 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 923 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 924 925 case 0x079: map_key_clear(KEY_KBDILLUMUP); break; 926 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break; 927 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break; 928 929 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 930 case 0x083: map_key_clear(KEY_LAST); break; 931 case 0x084: map_key_clear(KEY_ENTER); break; 932 case 0x088: map_key_clear(KEY_PC); break; 933 case 0x089: map_key_clear(KEY_TV); break; 934 case 0x08a: map_key_clear(KEY_WWW); break; 935 case 0x08b: map_key_clear(KEY_DVD); break; 936 case 0x08c: map_key_clear(KEY_PHONE); break; 937 case 0x08d: map_key_clear(KEY_PROGRAM); break; 938 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 939 case 0x08f: map_key_clear(KEY_GAMES); break; 940 case 0x090: map_key_clear(KEY_MEMO); break; 941 case 0x091: map_key_clear(KEY_CD); break; 942 case 0x092: map_key_clear(KEY_VCR); break; 943 case 0x093: map_key_clear(KEY_TUNER); break; 944 case 0x094: map_key_clear(KEY_EXIT); break; 945 case 0x095: map_key_clear(KEY_HELP); break; 946 case 0x096: map_key_clear(KEY_TAPE); break; 947 case 0x097: map_key_clear(KEY_TV2); break; 948 case 0x098: map_key_clear(KEY_SAT); break; 949 case 0x09a: map_key_clear(KEY_PVR); break; 950 951 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 952 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 953 case 0x0a0: map_key_clear(KEY_VCR2); break; 954 955 case 0x0b0: map_key_clear(KEY_PLAY); break; 956 case 0x0b1: map_key_clear(KEY_PAUSE); break; 957 case 0x0b2: map_key_clear(KEY_RECORD); break; 958 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 959 case 0x0b4: map_key_clear(KEY_REWIND); break; 960 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 961 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 962 case 0x0b7: map_key_clear(KEY_STOPCD); break; 963 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 964 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 965 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 966 case 0x0bf: map_key_clear(KEY_SLOW); break; 967 968 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 969 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 970 971 case 0x0d8: map_key_clear(KEY_DICTATE); break; 972 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break; 973 974 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 975 case 0x0e2: map_key_clear(KEY_MUTE); break; 976 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 977 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 978 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 979 case 0x0f5: map_key_clear(KEY_SLOW); break; 980 981 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 982 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 983 case 0x183: map_key_clear(KEY_CONFIG); break; 984 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 985 case 0x185: map_key_clear(KEY_EDITOR); break; 986 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 987 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 988 case 0x188: map_key_clear(KEY_PRESENTATION); break; 989 case 0x189: map_key_clear(KEY_DATABASE); break; 990 case 0x18a: map_key_clear(KEY_MAIL); break; 991 case 0x18b: map_key_clear(KEY_NEWS); break; 992 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 993 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 994 case 0x18e: map_key_clear(KEY_CALENDAR); break; 995 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 996 case 0x190: map_key_clear(KEY_JOURNAL); break; 997 case 0x191: map_key_clear(KEY_FINANCE); break; 998 case 0x192: map_key_clear(KEY_CALC); break; 999 case 0x193: map_key_clear(KEY_PLAYER); break; 1000 case 0x194: map_key_clear(KEY_FILE); break; 1001 case 0x196: map_key_clear(KEY_WWW); break; 1002 case 0x199: map_key_clear(KEY_CHAT); break; 1003 case 0x19c: map_key_clear(KEY_LOGOFF); break; 1004 case 0x19e: map_key_clear(KEY_COFFEE); break; 1005 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 1006 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 1007 case 0x1a3: map_key_clear(KEY_NEXT); break; 1008 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 1009 case 0x1a6: map_key_clear(KEY_HELP); break; 1010 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 1011 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 1012 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 1013 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 1014 case 0x1b4: map_key_clear(KEY_FILE); break; 1015 case 0x1b6: map_key_clear(KEY_IMAGES); break; 1016 case 0x1b7: map_key_clear(KEY_AUDIO); break; 1017 case 0x1b8: map_key_clear(KEY_VIDEO); break; 1018 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1019 case 0x1bd: map_key_clear(KEY_INFO); break; 1020 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1021 case 0x201: map_key_clear(KEY_NEW); break; 1022 case 0x202: map_key_clear(KEY_OPEN); break; 1023 case 0x203: map_key_clear(KEY_CLOSE); break; 1024 case 0x204: map_key_clear(KEY_EXIT); break; 1025 case 0x207: map_key_clear(KEY_SAVE); break; 1026 case 0x208: map_key_clear(KEY_PRINT); break; 1027 case 0x209: map_key_clear(KEY_PROPS); break; 1028 case 0x21a: map_key_clear(KEY_UNDO); break; 1029 case 0x21b: map_key_clear(KEY_COPY); break; 1030 case 0x21c: map_key_clear(KEY_CUT); break; 1031 case 0x21d: map_key_clear(KEY_PASTE); break; 1032 case 0x21f: map_key_clear(KEY_FIND); break; 1033 case 0x221: map_key_clear(KEY_SEARCH); break; 1034 case 0x222: map_key_clear(KEY_GOTO); break; 1035 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1036 case 0x224: map_key_clear(KEY_BACK); break; 1037 case 0x225: map_key_clear(KEY_FORWARD); break; 1038 case 0x226: map_key_clear(KEY_STOP); break; 1039 case 0x227: map_key_clear(KEY_REFRESH); break; 1040 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1041 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1042 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1043 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1044 case 0x232: map_key_clear(KEY_FULL_SCREEN); break; 1045 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1046 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1047 case 0x238: /* AC Pan */ 1048 set_bit(REL_HWHEEL, input->relbit); 1049 map_rel(REL_HWHEEL_HI_RES); 1050 break; 1051 case 0x23d: map_key_clear(KEY_EDIT); break; 1052 case 0x25f: map_key_clear(KEY_CANCEL); break; 1053 case 0x269: map_key_clear(KEY_INSERT); break; 1054 case 0x26a: map_key_clear(KEY_DELETE); break; 1055 case 0x279: map_key_clear(KEY_REDO); break; 1056 1057 case 0x289: map_key_clear(KEY_REPLY); break; 1058 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1059 case 0x28c: map_key_clear(KEY_SEND); break; 1060 1061 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break; 1062 1063 case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break; 1064 1065 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1066 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1067 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1068 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1069 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1070 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1071 1072 case 0x29f: map_key_clear(KEY_SCALE); break; 1073 1074 default: map_key_clear(KEY_UNKNOWN); 1075 } 1076 break; 1077 1078 case HID_UP_GENDEVCTRLS: 1079 switch (usage->hid) { 1080 case HID_DC_BATTERYSTRENGTH: 1081 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 1082 usage->type = EV_PWR; 1083 return; 1084 } 1085 goto unknown; 1086 1087 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1088 set_bit(EV_REP, input->evbit); 1089 switch (usage->hid & HID_USAGE) { 1090 case 0x021: map_key_clear(KEY_PRINT); break; 1091 case 0x070: map_key_clear(KEY_HP); break; 1092 case 0x071: map_key_clear(KEY_CAMERA); break; 1093 case 0x072: map_key_clear(KEY_SOUND); break; 1094 case 0x073: map_key_clear(KEY_QUESTION); break; 1095 case 0x080: map_key_clear(KEY_EMAIL); break; 1096 case 0x081: map_key_clear(KEY_CHAT); break; 1097 case 0x082: map_key_clear(KEY_SEARCH); break; 1098 case 0x083: map_key_clear(KEY_CONNECT); break; 1099 case 0x084: map_key_clear(KEY_FINANCE); break; 1100 case 0x085: map_key_clear(KEY_SPORT); break; 1101 case 0x086: map_key_clear(KEY_SHOP); break; 1102 default: goto ignore; 1103 } 1104 break; 1105 1106 case HID_UP_HPVENDOR2: 1107 set_bit(EV_REP, input->evbit); 1108 switch (usage->hid & HID_USAGE) { 1109 case 0x001: map_key_clear(KEY_MICMUTE); break; 1110 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1111 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1112 default: goto ignore; 1113 } 1114 break; 1115 1116 case HID_UP_MSVENDOR: 1117 goto ignore; 1118 1119 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1120 set_bit(EV_REP, input->evbit); 1121 goto ignore; 1122 1123 case HID_UP_LOGIVENDOR: 1124 /* intentional fallback */ 1125 case HID_UP_LOGIVENDOR2: 1126 /* intentional fallback */ 1127 case HID_UP_LOGIVENDOR3: 1128 goto ignore; 1129 1130 case HID_UP_PID: 1131 switch (usage->hid & HID_USAGE) { 1132 case 0xa4: map_key_clear(BTN_DEAD); break; 1133 default: goto ignore; 1134 } 1135 break; 1136 1137 default: 1138 unknown: 1139 if (field->report_size == 1) { 1140 if (field->report->type == HID_OUTPUT_REPORT) { 1141 map_led(LED_MISC); 1142 break; 1143 } 1144 map_key(BTN_MISC); 1145 break; 1146 } 1147 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1148 map_rel(REL_MISC); 1149 break; 1150 } 1151 map_abs(ABS_MISC); 1152 break; 1153 } 1154 1155mapped: 1156 /* Mapping failed, bail out */ 1157 if (!bit) 1158 return; 1159 1160 if (device->driver->input_mapped && 1161 device->driver->input_mapped(device, hidinput, field, usage, 1162 &bit, &max) < 0) { 1163 /* 1164 * The driver indicated that no further generic handling 1165 * of the usage is desired. 1166 */ 1167 return; 1168 } 1169 1170 set_bit(usage->type, input->evbit); 1171 1172 /* 1173 * This part is *really* controversial: 1174 * - HID aims at being generic so we should do our best to export 1175 * all incoming events 1176 * - HID describes what events are, so there is no reason for ABS_X 1177 * to be mapped to ABS_Y 1178 * - HID is using *_MISC+N as a default value, but nothing prevents 1179 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1180 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1181 * processing) 1182 * 1183 * If devices still want to use this (at their own risk), they will 1184 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1185 * the default should be a reliable mapping. 1186 */ 1187 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1188 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1189 usage->code = find_next_zero_bit(bit, 1190 max + 1, 1191 usage->code); 1192 } else { 1193 device->status |= HID_STAT_DUP_DETECTED; 1194 goto ignore; 1195 } 1196 } 1197 1198 if (usage->code > max) 1199 goto ignore; 1200 1201 if (usage->type == EV_ABS) { 1202 1203 int a = field->logical_minimum; 1204 int b = field->logical_maximum; 1205 1206 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1207 a = field->logical_minimum = 0; 1208 b = field->logical_maximum = 255; 1209 } 1210 1211 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1212 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1213 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1214 1215 input_abs_set_res(input, usage->code, 1216 hidinput_calc_abs_res(field, usage->code)); 1217 1218 /* use a larger default input buffer for MT devices */ 1219 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1220 input_set_events_per_packet(input, 60); 1221 } 1222 1223 if (usage->type == EV_ABS && 1224 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1225 int i; 1226 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1227 input_set_abs_params(input, i, -1, 1, 0, 0); 1228 set_bit(i, input->absbit); 1229 } 1230 if (usage->hat_dir && !field->dpad) 1231 field->dpad = usage->code; 1232 } 1233 1234 /* for those devices which produce Consumer volume usage as relative, 1235 * we emulate pressing volumeup/volumedown appropriate number of times 1236 * in hidinput_hid_event() 1237 */ 1238 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1239 (usage->code == ABS_VOLUME)) { 1240 set_bit(KEY_VOLUMEUP, input->keybit); 1241 set_bit(KEY_VOLUMEDOWN, input->keybit); 1242 } 1243 1244 if (usage->type == EV_KEY) { 1245 set_bit(EV_MSC, input->evbit); 1246 set_bit(MSC_SCAN, input->mscbit); 1247 } 1248 1249 return; 1250 1251ignore: 1252 usage->type = 0; 1253 usage->code = 0; 1254} 1255 1256static void hidinput_handle_scroll(struct hid_usage *usage, 1257 struct input_dev *input, 1258 __s32 value) 1259{ 1260 int code; 1261 int hi_res, lo_res; 1262 1263 if (value == 0) 1264 return; 1265 1266 if (usage->code == REL_WHEEL_HI_RES) 1267 code = REL_WHEEL; 1268 else 1269 code = REL_HWHEEL; 1270 1271 /* 1272 * Windows reports one wheel click as value 120. Where a high-res 1273 * scroll wheel is present, a fraction of 120 is reported instead. 1274 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1275 * adhere to the 120 expectation. 1276 */ 1277 hi_res = value * 120/usage->resolution_multiplier; 1278 1279 usage->wheel_accumulated += hi_res; 1280 lo_res = usage->wheel_accumulated/120; 1281 if (lo_res) 1282 usage->wheel_accumulated -= lo_res * 120; 1283 1284 input_event(input, EV_REL, code, lo_res); 1285 input_event(input, EV_REL, usage->code, hi_res); 1286} 1287 1288void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1289{ 1290 struct input_dev *input; 1291 unsigned *quirks = &hid->quirks; 1292 1293 if (!usage->type) 1294 return; 1295 1296 if (usage->type == EV_PWR) { 1297 hidinput_update_battery(hid, value); 1298 return; 1299 } 1300 1301 if (!field->hidinput) 1302 return; 1303 1304 input = field->hidinput->input; 1305 1306 if (usage->type == EV_ABS && 1307 (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) || 1308 ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))) { 1309 value = field->logical_maximum - value; 1310 } 1311 1312 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1313 int hat_dir = usage->hat_dir; 1314 if (!hat_dir) 1315 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1316 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1317 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1318 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1319 return; 1320 } 1321 1322 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 1323 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1324 return; 1325 } 1326 1327 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 1328 if (value) { 1329 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1330 return; 1331 } 1332 input_event(input, usage->type, usage->code, 0); 1333 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1334 return; 1335 } 1336 1337 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 1338 int a = field->logical_minimum; 1339 int b = field->logical_maximum; 1340 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1341 } 1342 1343 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1344 dbg_hid("Maximum Effects - %d\n",value); 1345 return; 1346 } 1347 1348 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1349 dbg_hid("PID Pool Report\n"); 1350 return; 1351 } 1352 1353 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1354 return; 1355 1356 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1357 usage->code == REL_HWHEEL_HI_RES)) { 1358 hidinput_handle_scroll(usage, input, value); 1359 return; 1360 } 1361 1362 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1363 (usage->code == ABS_VOLUME)) { 1364 int count = abs(value); 1365 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1366 int i; 1367 1368 for (i = 0; i < count; i++) { 1369 input_event(input, EV_KEY, direction, 1); 1370 input_sync(input); 1371 input_event(input, EV_KEY, direction, 0); 1372 input_sync(input); 1373 } 1374 return; 1375 } 1376 1377 /* 1378 * Ignore out-of-range values as per HID specification, 1379 * section 5.10 and 6.2.25, when NULL state bit is present. 1380 * When it's not, clamp the value to match Microsoft's input 1381 * driver as mentioned in "Required HID usages for digitizers": 1382 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1383 * 1384 * The logical_minimum < logical_maximum check is done so that we 1385 * don't unintentionally discard values sent by devices which 1386 * don't specify logical min and max. 1387 */ 1388 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1389 (field->logical_minimum < field->logical_maximum)) { 1390 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1391 (value < field->logical_minimum || 1392 value > field->logical_maximum)) { 1393 dbg_hid("Ignoring out-of-range value %x\n", value); 1394 return; 1395 } 1396 value = clamp(value, 1397 field->logical_minimum, 1398 field->logical_maximum); 1399 } 1400 1401 /* 1402 * Ignore reports for absolute data if the data didn't change. This is 1403 * not only an optimization but also fixes 'dead' key reports. Some 1404 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1405 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1406 * can only have one of them physically available. The 'dead' keys 1407 * report constant 0. As all map to the same keycode, they'd confuse 1408 * the input layer. If we filter the 'dead' keys on the HID level, we 1409 * skip the keycode translation and only forward real events. 1410 */ 1411 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1412 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1413 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1414 usage->usage_index < field->maxusage && 1415 value == field->value[usage->usage_index]) 1416 return; 1417 1418 /* report the usage code as scancode if the key status has changed */ 1419 if (usage->type == EV_KEY && 1420 (!test_bit(usage->code, input->key)) == value) 1421 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1422 1423 input_event(input, usage->type, usage->code, value); 1424 1425 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1426 usage->type == EV_KEY && value) { 1427 input_sync(input); 1428 input_event(input, usage->type, usage->code, 0); 1429 } 1430} 1431 1432void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1433{ 1434 struct hid_input *hidinput; 1435 1436 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1437 return; 1438 1439 list_for_each_entry(hidinput, &hid->inputs, list) 1440 input_sync(hidinput->input); 1441} 1442EXPORT_SYMBOL_GPL(hidinput_report_event); 1443 1444int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1445{ 1446 struct hid_report *report; 1447 int i, j; 1448 1449 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1450 for (i = 0; i < report->maxfield; i++) { 1451 *field = report->field[i]; 1452 for (j = 0; j < (*field)->maxusage; j++) 1453 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1454 return j; 1455 } 1456 } 1457 return -1; 1458} 1459EXPORT_SYMBOL_GPL(hidinput_find_field); 1460 1461struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1462{ 1463 struct hid_report *report; 1464 struct hid_field *field; 1465 int i, j; 1466 1467 list_for_each_entry(report, 1468 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1469 list) { 1470 for (i = 0; i < report->maxfield; i++) { 1471 field = report->field[i]; 1472 for (j = 0; j < field->maxusage; j++) 1473 if (field->usage[j].type == EV_LED) 1474 return field; 1475 } 1476 } 1477 return NULL; 1478} 1479EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1480 1481unsigned int hidinput_count_leds(struct hid_device *hid) 1482{ 1483 struct hid_report *report; 1484 struct hid_field *field; 1485 int i, j; 1486 unsigned int count = 0; 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 field->value[j]) 1496 count += 1; 1497 } 1498 } 1499 return count; 1500} 1501EXPORT_SYMBOL_GPL(hidinput_count_leds); 1502 1503static void hidinput_led_worker(struct work_struct *work) 1504{ 1505 struct hid_device *hid = container_of(work, struct hid_device, 1506 led_work); 1507 struct hid_field *field; 1508 struct hid_report *report; 1509 int ret; 1510 u32 len; 1511 __u8 *buf; 1512 1513 field = hidinput_get_led_field(hid); 1514 if (!field) 1515 return; 1516 1517 /* 1518 * field->report is accessed unlocked regarding HID core. So there might 1519 * be another incoming SET-LED request from user-space, which changes 1520 * the LED state while we assemble our outgoing buffer. However, this 1521 * doesn't matter as hid_output_report() correctly converts it into a 1522 * boolean value no matter what information is currently set on the LED 1523 * field (even garbage). So the remote device will always get a valid 1524 * request. 1525 * And in case we send a wrong value, a next led worker is spawned 1526 * for every SET-LED request so the following worker will send the 1527 * correct value, guaranteed! 1528 */ 1529 1530 report = field->report; 1531 1532 /* use custom SET_REPORT request if possible (asynchronous) */ 1533 if (hid->ll_driver->request) 1534 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1535 1536 /* fall back to generic raw-output-report */ 1537 len = hid_report_len(report); 1538 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1539 if (!buf) 1540 return; 1541 1542 hid_output_report(report, buf); 1543 /* synchronous output report */ 1544 ret = hid_hw_output_report(hid, buf, len); 1545 if (ret == -ENOSYS) 1546 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1547 HID_REQ_SET_REPORT); 1548 kfree(buf); 1549} 1550 1551static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1552 unsigned int code, int value) 1553{ 1554 struct hid_device *hid = input_get_drvdata(dev); 1555 struct hid_field *field; 1556 int offset; 1557 1558 if (type == EV_FF) 1559 return input_ff_event(dev, type, code, value); 1560 1561 if (type != EV_LED) 1562 return -1; 1563 1564 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1565 hid_warn(dev, "event field not found\n"); 1566 return -1; 1567 } 1568 1569 hid_set_field(field, offset, value); 1570 1571 schedule_work(&hid->led_work); 1572 return 0; 1573} 1574 1575static int hidinput_open(struct input_dev *dev) 1576{ 1577 struct hid_device *hid = input_get_drvdata(dev); 1578 1579 return hid_hw_open(hid); 1580} 1581 1582static void hidinput_close(struct input_dev *dev) 1583{ 1584 struct hid_device *hid = input_get_drvdata(dev); 1585 1586 hid_hw_close(hid); 1587} 1588 1589static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1590 struct hid_report *report, bool use_logical_max) 1591{ 1592 struct hid_usage *usage; 1593 bool update_needed = false; 1594 bool get_report_completed = false; 1595 int i, j; 1596 1597 if (report->maxfield == 0) 1598 return false; 1599 1600 for (i = 0; i < report->maxfield; i++) { 1601 __s32 value = use_logical_max ? 1602 report->field[i]->logical_maximum : 1603 report->field[i]->logical_minimum; 1604 1605 /* There is no good reason for a Resolution 1606 * Multiplier to have a count other than 1. 1607 * Ignore that case. 1608 */ 1609 if (report->field[i]->report_count != 1) 1610 continue; 1611 1612 for (j = 0; j < report->field[i]->maxusage; j++) { 1613 usage = &report->field[i]->usage[j]; 1614 1615 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1616 continue; 1617 1618 /* 1619 * If we have more than one feature within this 1620 * report we need to fill in the bits from the 1621 * others before we can overwrite the ones for the 1622 * Resolution Multiplier. 1623 * 1624 * But if we're not allowed to read from the device, 1625 * we just bail. Such a device should not exist 1626 * anyway. 1627 */ 1628 if (!get_report_completed && report->maxfield > 1) { 1629 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) 1630 return update_needed; 1631 1632 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1633 hid_hw_wait(hid); 1634 get_report_completed = true; 1635 } 1636 1637 report->field[i]->value[j] = value; 1638 update_needed = true; 1639 } 1640 } 1641 1642 return update_needed; 1643} 1644 1645static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1646{ 1647 struct hid_report_enum *rep_enum; 1648 struct hid_report *rep; 1649 int ret; 1650 1651 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1652 list_for_each_entry(rep, &rep_enum->report_list, list) { 1653 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1654 rep, true); 1655 1656 if (update_needed) { 1657 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1658 if (ret) { 1659 __hidinput_change_resolution_multipliers(hid, 1660 rep, false); 1661 return; 1662 } 1663 } 1664 } 1665 1666 /* refresh our structs */ 1667 hid_setup_resolution_multiplier(hid); 1668} 1669 1670static void report_features(struct hid_device *hid) 1671{ 1672 struct hid_driver *drv = hid->driver; 1673 struct hid_report_enum *rep_enum; 1674 struct hid_report *rep; 1675 struct hid_usage *usage; 1676 int i, j; 1677 1678 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1679 list_for_each_entry(rep, &rep_enum->report_list, list) 1680 for (i = 0; i < rep->maxfield; i++) { 1681 /* Ignore if report count is out of bounds. */ 1682 if (rep->field[i]->report_count < 1) 1683 continue; 1684 1685 for (j = 0; j < rep->field[i]->maxusage; j++) { 1686 usage = &rep->field[i]->usage[j]; 1687 1688 /* Verify if Battery Strength feature is available */ 1689 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1690 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1691 rep->field[i]); 1692 1693 if (drv->feature_mapping) 1694 drv->feature_mapping(hid, rep->field[i], usage); 1695 } 1696 } 1697} 1698 1699static struct hid_input *hidinput_allocate(struct hid_device *hid, 1700 unsigned int application) 1701{ 1702 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1703 struct input_dev *input_dev = input_allocate_device(); 1704 const char *suffix = NULL; 1705 size_t suffix_len, name_len; 1706 1707 if (!hidinput || !input_dev) 1708 goto fail; 1709 1710 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1711 hid->maxapplication > 1) { 1712 switch (application) { 1713 case HID_GD_KEYBOARD: 1714 suffix = "Keyboard"; 1715 break; 1716 case HID_GD_KEYPAD: 1717 suffix = "Keypad"; 1718 break; 1719 case HID_GD_MOUSE: 1720 suffix = "Mouse"; 1721 break; 1722 case HID_DG_STYLUS: 1723 suffix = "Pen"; 1724 break; 1725 case HID_DG_TOUCHSCREEN: 1726 suffix = "Touchscreen"; 1727 break; 1728 case HID_DG_TOUCHPAD: 1729 suffix = "Touchpad"; 1730 break; 1731 case HID_GD_SYSTEM_CONTROL: 1732 suffix = "System Control"; 1733 break; 1734 case HID_CP_CONSUMER_CONTROL: 1735 suffix = "Consumer Control"; 1736 break; 1737 case HID_GD_WIRELESS_RADIO_CTLS: 1738 suffix = "Wireless Radio Control"; 1739 break; 1740 case HID_GD_SYSTEM_MULTIAXIS: 1741 suffix = "System Multi Axis"; 1742 break; 1743 default: 1744 break; 1745 } 1746 } 1747 1748 if (suffix) { 1749 name_len = strlen(hid->name); 1750 suffix_len = strlen(suffix); 1751 if ((name_len < suffix_len) || 1752 strcmp(hid->name + name_len - suffix_len, suffix)) { 1753 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1754 hid->name, suffix); 1755 if (!hidinput->name) 1756 goto fail; 1757 } 1758 } 1759 1760 input_set_drvdata(input_dev, hid); 1761 input_dev->event = hidinput_input_event; 1762 input_dev->open = hidinput_open; 1763 input_dev->close = hidinput_close; 1764 input_dev->setkeycode = hidinput_setkeycode; 1765 input_dev->getkeycode = hidinput_getkeycode; 1766 1767 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1768 input_dev->phys = hid->phys; 1769 input_dev->uniq = hid->uniq; 1770 input_dev->id.bustype = hid->bus; 1771 input_dev->id.vendor = hid->vendor; 1772 input_dev->id.product = hid->product; 1773 input_dev->id.version = hid->version; 1774 input_dev->dev.parent = &hid->dev; 1775 1776 hidinput->input = input_dev; 1777 hidinput->application = application; 1778 list_add_tail(&hidinput->list, &hid->inputs); 1779 1780 INIT_LIST_HEAD(&hidinput->reports); 1781 1782 return hidinput; 1783 1784fail: 1785 kfree(hidinput); 1786 input_free_device(input_dev); 1787 hid_err(hid, "Out of memory during hid input probe\n"); 1788 return NULL; 1789} 1790 1791static bool hidinput_has_been_populated(struct hid_input *hidinput) 1792{ 1793 int i; 1794 unsigned long r = 0; 1795 1796 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1797 r |= hidinput->input->evbit[i]; 1798 1799 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1800 r |= hidinput->input->keybit[i]; 1801 1802 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1803 r |= hidinput->input->relbit[i]; 1804 1805 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1806 r |= hidinput->input->absbit[i]; 1807 1808 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1809 r |= hidinput->input->mscbit[i]; 1810 1811 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1812 r |= hidinput->input->ledbit[i]; 1813 1814 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1815 r |= hidinput->input->sndbit[i]; 1816 1817 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1818 r |= hidinput->input->ffbit[i]; 1819 1820 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1821 r |= hidinput->input->swbit[i]; 1822 1823 return !!r; 1824} 1825 1826static void hidinput_cleanup_hidinput(struct hid_device *hid, 1827 struct hid_input *hidinput) 1828{ 1829 struct hid_report *report; 1830 int i, k; 1831 1832 list_del(&hidinput->list); 1833 input_free_device(hidinput->input); 1834 kfree(hidinput->name); 1835 1836 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1837 if (k == HID_OUTPUT_REPORT && 1838 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1839 continue; 1840 1841 list_for_each_entry(report, &hid->report_enum[k].report_list, 1842 list) { 1843 1844 for (i = 0; i < report->maxfield; i++) 1845 if (report->field[i]->hidinput == hidinput) 1846 report->field[i]->hidinput = NULL; 1847 } 1848 } 1849 1850 kfree(hidinput); 1851} 1852 1853static struct hid_input *hidinput_match(struct hid_report *report) 1854{ 1855 struct hid_device *hid = report->device; 1856 struct hid_input *hidinput; 1857 1858 list_for_each_entry(hidinput, &hid->inputs, list) { 1859 if (hidinput->report && 1860 hidinput->report->id == report->id) 1861 return hidinput; 1862 } 1863 1864 return NULL; 1865} 1866 1867static struct hid_input *hidinput_match_application(struct hid_report *report) 1868{ 1869 struct hid_device *hid = report->device; 1870 struct hid_input *hidinput; 1871 1872 list_for_each_entry(hidinput, &hid->inputs, list) { 1873 if (hidinput->application == report->application) 1874 return hidinput; 1875 } 1876 1877 return NULL; 1878} 1879 1880static inline void hidinput_configure_usages(struct hid_input *hidinput, 1881 struct hid_report *report) 1882{ 1883 int i, j; 1884 1885 for (i = 0; i < report->maxfield; i++) 1886 for (j = 0; j < report->field[i]->maxusage; j++) 1887 hidinput_configure_usage(hidinput, report->field[i], 1888 report->field[i]->usage + j); 1889} 1890 1891/* 1892 * Register the input device; print a message. 1893 * Configure the input layer interface 1894 * Read all reports and initialize the absolute field values. 1895 */ 1896 1897int hidinput_connect(struct hid_device *hid, unsigned int force) 1898{ 1899 struct hid_driver *drv = hid->driver; 1900 struct hid_report *report; 1901 struct hid_input *next, *hidinput = NULL; 1902 unsigned int application; 1903 int i, k; 1904 1905 INIT_LIST_HEAD(&hid->inputs); 1906 INIT_WORK(&hid->led_work, hidinput_led_worker); 1907 1908 hid->status &= ~HID_STAT_DUP_DETECTED; 1909 1910 if (!force) { 1911 for (i = 0; i < hid->maxcollection; i++) { 1912 struct hid_collection *col = &hid->collection[i]; 1913 if (col->type == HID_COLLECTION_APPLICATION || 1914 col->type == HID_COLLECTION_PHYSICAL) 1915 if (IS_INPUT_APPLICATION(col->usage)) 1916 break; 1917 } 1918 1919 if (i == hid->maxcollection) 1920 return -1; 1921 } 1922 1923 report_features(hid); 1924 1925 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1926 if (k == HID_OUTPUT_REPORT && 1927 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1928 continue; 1929 1930 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1931 1932 if (!report->maxfield) 1933 continue; 1934 1935 application = report->application; 1936 1937 /* 1938 * Find the previous hidinput report attached 1939 * to this report id. 1940 */ 1941 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1942 hidinput = hidinput_match(report); 1943 else if (hid->maxapplication > 1 && 1944 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1945 hidinput = hidinput_match_application(report); 1946 1947 if (!hidinput) { 1948 hidinput = hidinput_allocate(hid, application); 1949 if (!hidinput) 1950 goto out_unwind; 1951 } 1952 1953 hidinput_configure_usages(hidinput, report); 1954 1955 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1956 hidinput->report = report; 1957 1958 list_add_tail(&report->hidinput_list, 1959 &hidinput->reports); 1960 } 1961 } 1962 1963 hidinput_change_resolution_multipliers(hid); 1964 1965 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1966 if (drv->input_configured && 1967 drv->input_configured(hid, hidinput)) 1968 goto out_unwind; 1969 1970 if (!hidinput_has_been_populated(hidinput)) { 1971 /* no need to register an input device not populated */ 1972 hidinput_cleanup_hidinput(hid, hidinput); 1973 continue; 1974 } 1975 1976 if (input_register_device(hidinput->input)) 1977 goto out_unwind; 1978 hidinput->registered = true; 1979 } 1980 1981 if (list_empty(&hid->inputs)) { 1982 hid_err(hid, "No inputs registered, leaving\n"); 1983 goto out_unwind; 1984 } 1985 1986 if (hid->status & HID_STAT_DUP_DETECTED) 1987 hid_dbg(hid, 1988 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 1989 1990 return 0; 1991 1992out_unwind: 1993 /* unwind the ones we already registered */ 1994 hidinput_disconnect(hid); 1995 1996 return -1; 1997} 1998EXPORT_SYMBOL_GPL(hidinput_connect); 1999 2000void hidinput_disconnect(struct hid_device *hid) 2001{ 2002 struct hid_input *hidinput, *next; 2003 2004 hidinput_cleanup_battery(hid); 2005 2006 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 2007 list_del(&hidinput->list); 2008 if (hidinput->registered) 2009 input_unregister_device(hidinput->input); 2010 else 2011 input_free_device(hidinput->input); 2012 kfree(hidinput->name); 2013 kfree(hidinput); 2014 } 2015 2016 /* led_work is spawned by input_dev callbacks, but doesn't access the 2017 * parent input_dev at all. Once all input devices are removed, we 2018 * know that led_work will never get restarted, so we can cancel it 2019 * synchronously and are safe. */ 2020 cancel_work_sync(&hid->led_work); 2021} 2022EXPORT_SYMBOL_GPL(hidinput_disconnect); 2023