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 #define map_msc(c) hid_map_usage(hidinput, usage, &bit, &max, EV_MSC, (c)) 56 57 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 58 &max, EV_ABS, (c)) 59 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 60 &max, EV_KEY, (c)) 61 62 static bool match_scancode(struct hid_usage *usage, 63 unsigned int cur_idx, unsigned int scancode) 64 { 65 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode; 66 } 67 68 static bool match_keycode(struct hid_usage *usage, 69 unsigned int cur_idx, unsigned int keycode) 70 { 71 /* 72 * We should exclude unmapped usages when doing lookup by keycode. 73 */ 74 return (usage->type == EV_KEY && usage->code == keycode); 75 } 76 77 static bool match_index(struct hid_usage *usage, 78 unsigned int cur_idx, unsigned int idx) 79 { 80 return cur_idx == idx; 81 } 82 83 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage, 84 unsigned int cur_idx, unsigned int val); 85 86 static struct hid_usage *hidinput_find_key(struct hid_device *hid, 87 hid_usage_cmp_t match, 88 unsigned int value, 89 unsigned int *usage_idx) 90 { 91 unsigned int i, j, k, cur_idx = 0; 92 struct hid_report *report; 93 struct hid_usage *usage; 94 95 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 96 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 97 for (i = 0; i < report->maxfield; i++) { 98 for (j = 0; j < report->field[i]->maxusage; j++) { 99 usage = report->field[i]->usage + j; 100 if (usage->type == EV_KEY || usage->type == 0) { 101 if (match(usage, cur_idx, value)) { 102 if (usage_idx) 103 *usage_idx = cur_idx; 104 return usage; 105 } 106 cur_idx++; 107 } 108 } 109 } 110 } 111 } 112 return NULL; 113 } 114 115 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid, 116 const struct input_keymap_entry *ke, 117 unsigned int *index) 118 { 119 struct hid_usage *usage; 120 unsigned int scancode; 121 122 if (ke->flags & INPUT_KEYMAP_BY_INDEX) 123 usage = hidinput_find_key(hid, match_index, ke->index, index); 124 else if (input_scancode_to_scalar(ke, &scancode) == 0) 125 usage = hidinput_find_key(hid, match_scancode, scancode, index); 126 else 127 usage = NULL; 128 129 return usage; 130 } 131 132 static int hidinput_getkeycode(struct input_dev *dev, 133 struct input_keymap_entry *ke) 134 { 135 struct hid_device *hid = input_get_drvdata(dev); 136 struct hid_usage *usage; 137 unsigned int scancode, index; 138 139 usage = hidinput_locate_usage(hid, ke, &index); 140 if (usage) { 141 ke->keycode = usage->type == EV_KEY ? 142 usage->code : KEY_RESERVED; 143 ke->index = index; 144 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE); 145 ke->len = sizeof(scancode); 146 memcpy(ke->scancode, &scancode, sizeof(scancode)); 147 return 0; 148 } 149 150 return -EINVAL; 151 } 152 153 static int hidinput_setkeycode(struct input_dev *dev, 154 const struct input_keymap_entry *ke, 155 unsigned int *old_keycode) 156 { 157 struct hid_device *hid = input_get_drvdata(dev); 158 struct hid_usage *usage; 159 160 usage = hidinput_locate_usage(hid, ke, NULL); 161 if (usage) { 162 *old_keycode = usage->type == EV_KEY ? 163 usage->code : KEY_RESERVED; 164 usage->type = EV_KEY; 165 usage->code = ke->keycode; 166 167 clear_bit(*old_keycode, dev->keybit); 168 set_bit(usage->code, dev->keybit); 169 dbg_hid("Assigned keycode %d to HID usage code %x\n", 170 usage->code, usage->hid); 171 172 /* 173 * Set the keybit for the old keycode if the old keycode is used 174 * by another key 175 */ 176 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL)) 177 set_bit(*old_keycode, dev->keybit); 178 179 return 0; 180 } 181 182 return -EINVAL; 183 } 184 185 186 /** 187 * hidinput_calc_abs_res - calculate an absolute axis resolution 188 * @field: the HID report field to calculate resolution for 189 * @code: axis code 190 * 191 * The formula is: 192 * (logical_maximum - logical_minimum) 193 * resolution = ---------------------------------------------------------- 194 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent 195 * 196 * as seen in the HID specification v1.11 6.2.2.7 Global Items. 197 * 198 * Only exponent 1 length units are processed. Centimeters and inches are 199 * converted to millimeters. Degrees are converted to radians. 200 */ 201 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) 202 { 203 __s32 unit_exponent = field->unit_exponent; 204 __s32 logical_extents = field->logical_maximum - 205 field->logical_minimum; 206 __s32 physical_extents = field->physical_maximum - 207 field->physical_minimum; 208 __s32 prev; 209 210 /* Check if the extents are sane */ 211 if (logical_extents <= 0 || physical_extents <= 0) 212 return 0; 213 214 /* 215 * Verify and convert units. 216 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding 217 */ 218 switch (code) { 219 case ABS_X: 220 case ABS_Y: 221 case ABS_Z: 222 case ABS_MT_POSITION_X: 223 case ABS_MT_POSITION_Y: 224 case ABS_MT_TOOL_X: 225 case ABS_MT_TOOL_Y: 226 case ABS_MT_TOUCH_MAJOR: 227 case ABS_MT_TOUCH_MINOR: 228 if (field->unit == 0x11) { /* If centimeters */ 229 /* Convert to millimeters */ 230 unit_exponent += 1; 231 } else if (field->unit == 0x13) { /* If inches */ 232 /* Convert to millimeters */ 233 prev = physical_extents; 234 physical_extents *= 254; 235 if (physical_extents < prev) 236 return 0; 237 unit_exponent -= 1; 238 } else { 239 return 0; 240 } 241 break; 242 243 case ABS_RX: 244 case ABS_RY: 245 case ABS_RZ: 246 case ABS_WHEEL: 247 case ABS_TILT_X: 248 case ABS_TILT_Y: 249 if (field->unit == 0x14) { /* If degrees */ 250 /* Convert to radians */ 251 prev = logical_extents; 252 logical_extents *= 573; 253 if (logical_extents < prev) 254 return 0; 255 unit_exponent += 1; 256 } else if (field->unit != 0x12) { /* If not radians */ 257 return 0; 258 } 259 break; 260 261 default: 262 return 0; 263 } 264 265 /* Apply negative unit exponent */ 266 for (; unit_exponent < 0; unit_exponent++) { 267 prev = logical_extents; 268 logical_extents *= 10; 269 if (logical_extents < prev) 270 return 0; 271 } 272 /* Apply positive unit exponent */ 273 for (; unit_exponent > 0; unit_exponent--) { 274 prev = physical_extents; 275 physical_extents *= 10; 276 if (physical_extents < prev) 277 return 0; 278 } 279 280 /* Calculate resolution */ 281 return DIV_ROUND_CLOSEST(logical_extents, physical_extents); 282 } 283 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res); 284 285 #ifdef CONFIG_HID_BATTERY_STRENGTH 286 static enum power_supply_property hidinput_battery_props[] = { 287 POWER_SUPPLY_PROP_PRESENT, 288 POWER_SUPPLY_PROP_ONLINE, 289 POWER_SUPPLY_PROP_CAPACITY, 290 POWER_SUPPLY_PROP_MODEL_NAME, 291 POWER_SUPPLY_PROP_STATUS, 292 POWER_SUPPLY_PROP_SCOPE, 293 }; 294 295 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */ 296 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */ 297 #define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */ 298 299 static const struct hid_device_id hid_battery_quirks[] = { 300 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 301 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO), 302 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 303 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 304 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI), 305 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 306 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 307 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI), 308 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 309 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 310 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO), 311 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 312 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 313 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI), 314 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 315 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, 316 USB_DEVICE_ID_ELECOM_BM084), 317 HID_BATTERY_QUIRK_IGNORE }, 318 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL, 319 USB_DEVICE_ID_SYMBOL_SCANNER_3), 320 HID_BATTERY_QUIRK_IGNORE }, 321 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK, 322 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), 323 HID_BATTERY_QUIRK_IGNORE }, 324 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 325 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD), 326 HID_BATTERY_QUIRK_IGNORE }, 327 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN), 328 HID_BATTERY_QUIRK_IGNORE }, 329 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN), 330 HID_BATTERY_QUIRK_IGNORE }, 331 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15), 332 HID_BATTERY_QUIRK_IGNORE }, 333 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100), 334 HID_BATTERY_QUIRK_IGNORE }, 335 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15), 336 HID_BATTERY_QUIRK_IGNORE }, 337 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN), 338 HID_BATTERY_QUIRK_IGNORE }, 339 {} 340 }; 341 342 static unsigned find_battery_quirk(struct hid_device *hdev) 343 { 344 unsigned quirks = 0; 345 const struct hid_device_id *match; 346 347 match = hid_match_id(hdev, hid_battery_quirks); 348 if (match != NULL) 349 quirks = match->driver_data; 350 351 return quirks; 352 } 353 354 static int hidinput_scale_battery_capacity(struct hid_device *dev, 355 int value) 356 { 357 if (dev->battery_min < dev->battery_max && 358 value >= dev->battery_min && value <= dev->battery_max) 359 value = ((value - dev->battery_min) * 100) / 360 (dev->battery_max - dev->battery_min); 361 362 return value; 363 } 364 365 static int hidinput_query_battery_capacity(struct hid_device *dev) 366 { 367 u8 *buf; 368 int ret; 369 370 buf = kmalloc(4, GFP_KERNEL); 371 if (!buf) 372 return -ENOMEM; 373 374 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4, 375 dev->battery_report_type, HID_REQ_GET_REPORT); 376 if (ret < 2) { 377 kfree(buf); 378 return -ENODATA; 379 } 380 381 ret = hidinput_scale_battery_capacity(dev, buf[1]); 382 kfree(buf); 383 return ret; 384 } 385 386 static int hidinput_get_battery_property(struct power_supply *psy, 387 enum power_supply_property prop, 388 union power_supply_propval *val) 389 { 390 struct hid_device *dev = power_supply_get_drvdata(psy); 391 int value; 392 int ret = 0; 393 394 switch (prop) { 395 case POWER_SUPPLY_PROP_PRESENT: 396 case POWER_SUPPLY_PROP_ONLINE: 397 val->intval = 1; 398 break; 399 400 case POWER_SUPPLY_PROP_CAPACITY: 401 if (dev->battery_status != HID_BATTERY_REPORTED && 402 !dev->battery_avoid_query) { 403 value = hidinput_query_battery_capacity(dev); 404 if (value < 0) 405 return value; 406 } else { 407 value = dev->battery_capacity; 408 } 409 410 val->intval = value; 411 break; 412 413 case POWER_SUPPLY_PROP_MODEL_NAME: 414 val->strval = dev->name; 415 break; 416 417 case POWER_SUPPLY_PROP_STATUS: 418 if (dev->battery_status != HID_BATTERY_REPORTED && 419 !dev->battery_avoid_query) { 420 value = hidinput_query_battery_capacity(dev); 421 if (value < 0) 422 return value; 423 424 dev->battery_capacity = value; 425 dev->battery_status = HID_BATTERY_QUERIED; 426 } 427 428 if (dev->battery_status == HID_BATTERY_UNKNOWN) 429 val->intval = POWER_SUPPLY_STATUS_UNKNOWN; 430 else 431 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 432 break; 433 434 case POWER_SUPPLY_PROP_SCOPE: 435 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 436 break; 437 438 default: 439 ret = -EINVAL; 440 break; 441 } 442 443 return ret; 444 } 445 446 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 447 struct hid_field *field, bool is_percentage) 448 { 449 struct power_supply_desc *psy_desc; 450 struct power_supply_config psy_cfg = { .drv_data = dev, }; 451 unsigned quirks; 452 s32 min, max; 453 int error; 454 455 if (dev->battery) 456 return 0; /* already initialized? */ 457 458 quirks = find_battery_quirk(dev); 459 460 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 461 dev->bus, dev->vendor, dev->product, dev->version, quirks); 462 463 if (quirks & HID_BATTERY_QUIRK_IGNORE) 464 return 0; 465 466 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); 467 if (!psy_desc) 468 return -ENOMEM; 469 470 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", 471 strlen(dev->uniq) ? 472 dev->uniq : dev_name(&dev->dev)); 473 if (!psy_desc->name) { 474 error = -ENOMEM; 475 goto err_free_mem; 476 } 477 478 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 479 psy_desc->properties = hidinput_battery_props; 480 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); 481 psy_desc->use_for_apm = 0; 482 psy_desc->get_property = hidinput_get_battery_property; 483 484 min = field->logical_minimum; 485 max = field->logical_maximum; 486 487 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) { 488 min = 0; 489 max = 100; 490 } 491 492 if (quirks & HID_BATTERY_QUIRK_FEATURE) 493 report_type = HID_FEATURE_REPORT; 494 495 dev->battery_min = min; 496 dev->battery_max = max; 497 dev->battery_report_type = report_type; 498 dev->battery_report_id = field->report->id; 499 500 /* 501 * Stylus is normally not connected to the device and thus we 502 * can't query the device and get meaningful battery strength. 503 * We have to wait for the device to report it on its own. 504 */ 505 dev->battery_avoid_query = report_type == HID_INPUT_REPORT && 506 field->physical == HID_DG_STYLUS; 507 508 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); 509 if (IS_ERR(dev->battery)) { 510 error = PTR_ERR(dev->battery); 511 hid_warn(dev, "can't register power supply: %d\n", error); 512 goto err_free_name; 513 } 514 515 power_supply_powers(dev->battery, &dev->dev); 516 return 0; 517 518 err_free_name: 519 kfree(psy_desc->name); 520 err_free_mem: 521 kfree(psy_desc); 522 dev->battery = NULL; 523 return error; 524 } 525 526 static void hidinput_cleanup_battery(struct hid_device *dev) 527 { 528 const struct power_supply_desc *psy_desc; 529 530 if (!dev->battery) 531 return; 532 533 psy_desc = dev->battery->desc; 534 power_supply_unregister(dev->battery); 535 kfree(psy_desc->name); 536 kfree(psy_desc); 537 dev->battery = NULL; 538 } 539 540 static void hidinput_update_battery(struct hid_device *dev, int value) 541 { 542 int capacity; 543 544 if (!dev->battery) 545 return; 546 547 if (value == 0 || value < dev->battery_min || value > dev->battery_max) 548 return; 549 550 capacity = hidinput_scale_battery_capacity(dev, value); 551 552 if (dev->battery_status != HID_BATTERY_REPORTED || 553 capacity != dev->battery_capacity || 554 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) { 555 dev->battery_capacity = capacity; 556 dev->battery_status = HID_BATTERY_REPORTED; 557 dev->battery_ratelimit_time = 558 ktime_add_ms(ktime_get_coarse(), 30 * 1000); 559 power_supply_changed(dev->battery); 560 } 561 } 562 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 563 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 564 struct hid_field *field, bool is_percentage) 565 { 566 return 0; 567 } 568 569 static void hidinput_cleanup_battery(struct hid_device *dev) 570 { 571 } 572 573 static void hidinput_update_battery(struct hid_device *dev, int value) 574 { 575 } 576 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 577 578 static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field, 579 unsigned int type, unsigned int usage) 580 { 581 struct hid_collection *collection; 582 583 collection = &device->collection[field->usage->collection_index]; 584 585 return collection->type == type && collection->usage == usage; 586 } 587 588 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 589 struct hid_usage *usage) 590 { 591 struct input_dev *input = hidinput->input; 592 struct hid_device *device = input_get_drvdata(input); 593 int max = 0, code; 594 unsigned long *bit = NULL; 595 596 field->hidinput = hidinput; 597 598 if (field->flags & HID_MAIN_ITEM_CONSTANT) 599 goto ignore; 600 601 /* Ignore if report count is out of bounds. */ 602 if (field->report_count < 1) 603 goto ignore; 604 605 /* only LED usages are supported in output fields */ 606 if (field->report_type == HID_OUTPUT_REPORT && 607 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 608 goto ignore; 609 } 610 611 if (device->driver->input_mapping) { 612 int ret = device->driver->input_mapping(device, hidinput, field, 613 usage, &bit, &max); 614 if (ret > 0) 615 goto mapped; 616 if (ret < 0) 617 goto ignore; 618 } 619 620 switch (usage->hid & HID_USAGE_PAGE) { 621 case HID_UP_UNDEFINED: 622 goto ignore; 623 624 case HID_UP_KEYBOARD: 625 set_bit(EV_REP, input->evbit); 626 627 if ((usage->hid & HID_USAGE) < 256) { 628 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 629 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 630 } else 631 map_key(KEY_UNKNOWN); 632 633 break; 634 635 case HID_UP_BUTTON: 636 code = ((usage->hid - 1) & HID_USAGE); 637 638 switch (field->application) { 639 case HID_GD_MOUSE: 640 case HID_GD_POINTER: code += BTN_MOUSE; break; 641 case HID_GD_JOYSTICK: 642 if (code <= 0xf) 643 code += BTN_JOYSTICK; 644 else 645 code += BTN_TRIGGER_HAPPY - 0x10; 646 break; 647 case HID_GD_GAMEPAD: 648 if (code <= 0xf) 649 code += BTN_GAMEPAD; 650 else 651 code += BTN_TRIGGER_HAPPY - 0x10; 652 break; 653 case HID_CP_CONSUMER_CONTROL: 654 if (hidinput_field_in_collection(device, field, 655 HID_COLLECTION_NAMED_ARRAY, 656 HID_CP_PROGRAMMABLEBUTTONS)) { 657 if (code <= 0x1d) 658 code += KEY_MACRO1; 659 else 660 code += BTN_TRIGGER_HAPPY - 0x1e; 661 break; 662 } 663 fallthrough; 664 default: 665 switch (field->physical) { 666 case HID_GD_MOUSE: 667 case HID_GD_POINTER: code += BTN_MOUSE; break; 668 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 669 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 670 default: code += BTN_MISC; 671 } 672 } 673 674 map_key(code); 675 break; 676 677 case HID_UP_SIMULATION: 678 switch (usage->hid & 0xffff) { 679 case 0xba: map_abs(ABS_RUDDER); break; 680 case 0xbb: map_abs(ABS_THROTTLE); break; 681 case 0xc4: map_abs(ABS_GAS); break; 682 case 0xc5: map_abs(ABS_BRAKE); break; 683 case 0xc8: map_abs(ABS_WHEEL); break; 684 default: goto ignore; 685 } 686 break; 687 688 case HID_UP_GENDESK: 689 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 690 switch (usage->hid & 0xf) { 691 case 0x1: map_key_clear(KEY_POWER); break; 692 case 0x2: map_key_clear(KEY_SLEEP); break; 693 case 0x3: map_key_clear(KEY_WAKEUP); break; 694 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 695 case 0x5: map_key_clear(KEY_MENU); break; 696 case 0x6: map_key_clear(KEY_PROG1); break; 697 case 0x7: map_key_clear(KEY_HELP); break; 698 case 0x8: map_key_clear(KEY_EXIT); break; 699 case 0x9: map_key_clear(KEY_SELECT); break; 700 case 0xa: map_key_clear(KEY_RIGHT); break; 701 case 0xb: map_key_clear(KEY_LEFT); break; 702 case 0xc: map_key_clear(KEY_UP); break; 703 case 0xd: map_key_clear(KEY_DOWN); break; 704 case 0xe: map_key_clear(KEY_POWER2); break; 705 case 0xf: map_key_clear(KEY_RESTART); break; 706 default: goto unknown; 707 } 708 break; 709 } 710 711 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */ 712 switch (usage->hid & 0xf) { 713 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break; 714 default: goto ignore; 715 } 716 break; 717 } 718 719 /* 720 * Some lazy vendors declare 255 usages for System Control, 721 * leading to the creation of ABS_X|Y axis and too many others. 722 * It wouldn't be a problem if joydev doesn't consider the 723 * device as a joystick then. 724 */ 725 if (field->application == HID_GD_SYSTEM_CONTROL) 726 goto ignore; 727 728 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 729 switch (usage->hid) { 730 case HID_GD_UP: usage->hat_dir = 1; break; 731 case HID_GD_DOWN: usage->hat_dir = 5; break; 732 case HID_GD_RIGHT: usage->hat_dir = 3; break; 733 case HID_GD_LEFT: usage->hat_dir = 7; break; 734 default: goto unknown; 735 } 736 if (field->dpad) { 737 map_abs(field->dpad); 738 goto ignore; 739 } 740 map_abs(ABS_HAT0X); 741 break; 742 } 743 744 switch (usage->hid) { 745 /* These usage IDs map directly to the usage codes. */ 746 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 747 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 748 if (field->flags & HID_MAIN_ITEM_RELATIVE) 749 map_rel(usage->hid & 0xf); 750 else 751 map_abs_clear(usage->hid & 0xf); 752 break; 753 754 case HID_GD_WHEEL: 755 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 756 set_bit(REL_WHEEL, input->relbit); 757 map_rel(REL_WHEEL_HI_RES); 758 } else { 759 map_abs(usage->hid & 0xf); 760 } 761 break; 762 case HID_GD_SLIDER: case HID_GD_DIAL: 763 if (field->flags & HID_MAIN_ITEM_RELATIVE) 764 map_rel(usage->hid & 0xf); 765 else 766 map_abs(usage->hid & 0xf); 767 break; 768 769 case HID_GD_HATSWITCH: 770 usage->hat_min = field->logical_minimum; 771 usage->hat_max = field->logical_maximum; 772 map_abs(ABS_HAT0X); 773 break; 774 775 case HID_GD_START: map_key_clear(BTN_START); break; 776 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 777 778 case HID_GD_RFKILL_BTN: 779 /* MS wireless radio ctl extension, also check CA */ 780 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 781 map_key_clear(KEY_RFKILL); 782 /* We need to simulate the btn release */ 783 field->flags |= HID_MAIN_ITEM_RELATIVE; 784 break; 785 } 786 goto unknown; 787 788 default: goto unknown; 789 } 790 791 break; 792 793 case HID_UP_LED: 794 switch (usage->hid & 0xffff) { /* HID-Value: */ 795 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 796 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 797 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 798 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 799 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 800 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 801 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 802 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 803 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 804 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 805 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 806 807 default: goto ignore; 808 } 809 break; 810 811 case HID_UP_DIGITIZER: 812 if ((field->application & 0xff) == 0x01) /* Digitizer */ 813 __set_bit(INPUT_PROP_POINTER, input->propbit); 814 else if ((field->application & 0xff) == 0x02) /* Pen */ 815 __set_bit(INPUT_PROP_DIRECT, input->propbit); 816 817 switch (usage->hid & 0xff) { 818 case 0x00: /* Undefined */ 819 goto ignore; 820 821 case 0x30: /* TipPressure */ 822 if (!test_bit(BTN_TOUCH, input->keybit)) { 823 device->quirks |= HID_QUIRK_NOTOUCH; 824 set_bit(EV_KEY, input->evbit); 825 set_bit(BTN_TOUCH, input->keybit); 826 } 827 map_abs_clear(ABS_PRESSURE); 828 break; 829 830 case 0x32: /* InRange */ 831 switch (field->physical & 0xff) { 832 case 0x21: map_key(BTN_TOOL_MOUSE); break; 833 case 0x22: map_key(BTN_TOOL_FINGER); break; 834 default: map_key(BTN_TOOL_PEN); break; 835 } 836 break; 837 838 case 0x3b: /* Battery Strength */ 839 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false); 840 usage->type = EV_PWR; 841 return; 842 843 case 0x3c: /* Invert */ 844 map_key_clear(BTN_TOOL_RUBBER); 845 break; 846 847 case 0x3d: /* X Tilt */ 848 map_abs_clear(ABS_TILT_X); 849 break; 850 851 case 0x3e: /* Y Tilt */ 852 map_abs_clear(ABS_TILT_Y); 853 break; 854 855 case 0x33: /* Touch */ 856 case 0x42: /* TipSwitch */ 857 case 0x43: /* TipSwitch2 */ 858 device->quirks &= ~HID_QUIRK_NOTOUCH; 859 map_key_clear(BTN_TOUCH); 860 break; 861 862 case 0x44: /* BarrelSwitch */ 863 map_key_clear(BTN_STYLUS); 864 break; 865 866 case 0x45: /* ERASER */ 867 /* 868 * This event is reported when eraser tip touches the surface. 869 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when 870 * tool gets in proximity. 871 */ 872 map_key_clear(BTN_TOUCH); 873 break; 874 875 case 0x46: /* TabletPick */ 876 case 0x5a: /* SecondaryBarrelSwitch */ 877 map_key_clear(BTN_STYLUS2); 878 break; 879 880 case 0x5b: /* TransducerSerialNumber */ 881 case 0x6e: /* TransducerSerialNumber2 */ 882 map_msc(MSC_SERIAL); 883 break; 884 885 default: goto unknown; 886 } 887 break; 888 889 case HID_UP_TELEPHONY: 890 switch (usage->hid & HID_USAGE) { 891 case 0x2f: map_key_clear(KEY_MICMUTE); break; 892 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 893 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 894 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 895 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 896 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 897 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 898 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 899 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 900 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 901 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 902 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 903 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 904 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 905 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 906 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 907 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 908 default: goto ignore; 909 } 910 break; 911 912 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 913 switch (usage->hid & HID_USAGE) { 914 case 0x000: goto ignore; 915 case 0x030: map_key_clear(KEY_POWER); break; 916 case 0x031: map_key_clear(KEY_RESTART); break; 917 case 0x032: map_key_clear(KEY_SLEEP); break; 918 case 0x034: map_key_clear(KEY_SLEEP); break; 919 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 920 case 0x036: map_key_clear(BTN_MISC); break; 921 922 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 923 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 924 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 925 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 926 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 927 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 928 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 929 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 930 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 931 932 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 933 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 934 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 935 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 936 case 0x069: map_key_clear(KEY_RED); break; 937 case 0x06a: map_key_clear(KEY_GREEN); break; 938 case 0x06b: map_key_clear(KEY_BLUE); break; 939 case 0x06c: map_key_clear(KEY_YELLOW); break; 940 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break; 941 942 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 943 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 944 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 945 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 946 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 947 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 948 949 case 0x079: map_key_clear(KEY_KBDILLUMUP); break; 950 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break; 951 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break; 952 953 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 954 case 0x083: map_key_clear(KEY_LAST); break; 955 case 0x084: map_key_clear(KEY_ENTER); break; 956 case 0x088: map_key_clear(KEY_PC); break; 957 case 0x089: map_key_clear(KEY_TV); break; 958 case 0x08a: map_key_clear(KEY_WWW); break; 959 case 0x08b: map_key_clear(KEY_DVD); break; 960 case 0x08c: map_key_clear(KEY_PHONE); break; 961 case 0x08d: map_key_clear(KEY_PROGRAM); break; 962 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 963 case 0x08f: map_key_clear(KEY_GAMES); break; 964 case 0x090: map_key_clear(KEY_MEMO); break; 965 case 0x091: map_key_clear(KEY_CD); break; 966 case 0x092: map_key_clear(KEY_VCR); break; 967 case 0x093: map_key_clear(KEY_TUNER); break; 968 case 0x094: map_key_clear(KEY_EXIT); break; 969 case 0x095: map_key_clear(KEY_HELP); break; 970 case 0x096: map_key_clear(KEY_TAPE); break; 971 case 0x097: map_key_clear(KEY_TV2); break; 972 case 0x098: map_key_clear(KEY_SAT); break; 973 case 0x09a: map_key_clear(KEY_PVR); break; 974 975 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 976 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 977 case 0x0a0: map_key_clear(KEY_VCR2); break; 978 979 case 0x0b0: map_key_clear(KEY_PLAY); break; 980 case 0x0b1: map_key_clear(KEY_PAUSE); break; 981 case 0x0b2: map_key_clear(KEY_RECORD); break; 982 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 983 case 0x0b4: map_key_clear(KEY_REWIND); break; 984 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 985 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 986 case 0x0b7: map_key_clear(KEY_STOPCD); break; 987 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 988 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 989 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 990 case 0x0bf: map_key_clear(KEY_SLOW); break; 991 992 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 993 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 994 995 case 0x0d8: map_key_clear(KEY_DICTATE); break; 996 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break; 997 998 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 999 case 0x0e2: map_key_clear(KEY_MUTE); break; 1000 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 1001 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 1002 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 1003 case 0x0f5: map_key_clear(KEY_SLOW); break; 1004 1005 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 1006 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 1007 case 0x183: map_key_clear(KEY_CONFIG); break; 1008 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 1009 case 0x185: map_key_clear(KEY_EDITOR); break; 1010 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 1011 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 1012 case 0x188: map_key_clear(KEY_PRESENTATION); break; 1013 case 0x189: map_key_clear(KEY_DATABASE); break; 1014 case 0x18a: map_key_clear(KEY_MAIL); break; 1015 case 0x18b: map_key_clear(KEY_NEWS); break; 1016 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 1017 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 1018 case 0x18e: map_key_clear(KEY_CALENDAR); break; 1019 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 1020 case 0x190: map_key_clear(KEY_JOURNAL); break; 1021 case 0x191: map_key_clear(KEY_FINANCE); break; 1022 case 0x192: map_key_clear(KEY_CALC); break; 1023 case 0x193: map_key_clear(KEY_PLAYER); break; 1024 case 0x194: map_key_clear(KEY_FILE); break; 1025 case 0x196: map_key_clear(KEY_WWW); break; 1026 case 0x199: map_key_clear(KEY_CHAT); break; 1027 case 0x19c: map_key_clear(KEY_LOGOFF); break; 1028 case 0x19e: map_key_clear(KEY_COFFEE); break; 1029 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 1030 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 1031 case 0x1a3: map_key_clear(KEY_NEXT); break; 1032 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 1033 case 0x1a6: map_key_clear(KEY_HELP); break; 1034 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 1035 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 1036 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 1037 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 1038 case 0x1b4: map_key_clear(KEY_FILE); break; 1039 case 0x1b6: map_key_clear(KEY_IMAGES); break; 1040 case 0x1b7: map_key_clear(KEY_AUDIO); break; 1041 case 0x1b8: map_key_clear(KEY_VIDEO); break; 1042 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1043 case 0x1bd: map_key_clear(KEY_INFO); break; 1044 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1045 case 0x201: map_key_clear(KEY_NEW); break; 1046 case 0x202: map_key_clear(KEY_OPEN); break; 1047 case 0x203: map_key_clear(KEY_CLOSE); break; 1048 case 0x204: map_key_clear(KEY_EXIT); break; 1049 case 0x207: map_key_clear(KEY_SAVE); break; 1050 case 0x208: map_key_clear(KEY_PRINT); break; 1051 case 0x209: map_key_clear(KEY_PROPS); break; 1052 case 0x21a: map_key_clear(KEY_UNDO); break; 1053 case 0x21b: map_key_clear(KEY_COPY); break; 1054 case 0x21c: map_key_clear(KEY_CUT); break; 1055 case 0x21d: map_key_clear(KEY_PASTE); break; 1056 case 0x21f: map_key_clear(KEY_FIND); break; 1057 case 0x221: map_key_clear(KEY_SEARCH); break; 1058 case 0x222: map_key_clear(KEY_GOTO); break; 1059 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1060 case 0x224: map_key_clear(KEY_BACK); break; 1061 case 0x225: map_key_clear(KEY_FORWARD); break; 1062 case 0x226: map_key_clear(KEY_STOP); break; 1063 case 0x227: map_key_clear(KEY_REFRESH); break; 1064 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1065 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1066 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1067 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1068 case 0x232: map_key_clear(KEY_FULL_SCREEN); break; 1069 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1070 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1071 case 0x238: /* AC Pan */ 1072 set_bit(REL_HWHEEL, input->relbit); 1073 map_rel(REL_HWHEEL_HI_RES); 1074 break; 1075 case 0x23d: map_key_clear(KEY_EDIT); break; 1076 case 0x25f: map_key_clear(KEY_CANCEL); break; 1077 case 0x269: map_key_clear(KEY_INSERT); break; 1078 case 0x26a: map_key_clear(KEY_DELETE); break; 1079 case 0x279: map_key_clear(KEY_REDO); break; 1080 1081 case 0x289: map_key_clear(KEY_REPLY); break; 1082 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1083 case 0x28c: map_key_clear(KEY_SEND); break; 1084 1085 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break; 1086 1087 case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break; 1088 1089 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1090 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1091 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1092 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1093 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1094 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1095 1096 case 0x29f: map_key_clear(KEY_SCALE); break; 1097 1098 default: map_key_clear(KEY_UNKNOWN); 1099 } 1100 break; 1101 1102 case HID_UP_GENDEVCTRLS: 1103 switch (usage->hid) { 1104 case HID_DC_BATTERYSTRENGTH: 1105 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false); 1106 usage->type = EV_PWR; 1107 return; 1108 } 1109 goto unknown; 1110 1111 case HID_UP_BATTERY: 1112 switch (usage->hid) { 1113 case HID_BAT_ABSOLUTESTATEOFCHARGE: 1114 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true); 1115 usage->type = EV_PWR; 1116 return; 1117 } 1118 goto unknown; 1119 1120 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1121 set_bit(EV_REP, input->evbit); 1122 switch (usage->hid & HID_USAGE) { 1123 case 0x021: map_key_clear(KEY_PRINT); break; 1124 case 0x070: map_key_clear(KEY_HP); break; 1125 case 0x071: map_key_clear(KEY_CAMERA); break; 1126 case 0x072: map_key_clear(KEY_SOUND); break; 1127 case 0x073: map_key_clear(KEY_QUESTION); break; 1128 case 0x080: map_key_clear(KEY_EMAIL); break; 1129 case 0x081: map_key_clear(KEY_CHAT); break; 1130 case 0x082: map_key_clear(KEY_SEARCH); break; 1131 case 0x083: map_key_clear(KEY_CONNECT); break; 1132 case 0x084: map_key_clear(KEY_FINANCE); break; 1133 case 0x085: map_key_clear(KEY_SPORT); break; 1134 case 0x086: map_key_clear(KEY_SHOP); break; 1135 default: goto ignore; 1136 } 1137 break; 1138 1139 case HID_UP_HPVENDOR2: 1140 set_bit(EV_REP, input->evbit); 1141 switch (usage->hid & HID_USAGE) { 1142 case 0x001: map_key_clear(KEY_MICMUTE); break; 1143 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1144 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1145 default: goto ignore; 1146 } 1147 break; 1148 1149 case HID_UP_MSVENDOR: 1150 goto ignore; 1151 1152 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1153 set_bit(EV_REP, input->evbit); 1154 goto ignore; 1155 1156 case HID_UP_LOGIVENDOR: 1157 /* intentional fallback */ 1158 case HID_UP_LOGIVENDOR2: 1159 /* intentional fallback */ 1160 case HID_UP_LOGIVENDOR3: 1161 goto ignore; 1162 1163 case HID_UP_PID: 1164 switch (usage->hid & HID_USAGE) { 1165 case 0xa4: map_key_clear(BTN_DEAD); break; 1166 default: goto ignore; 1167 } 1168 break; 1169 1170 default: 1171 unknown: 1172 if (field->report_size == 1) { 1173 if (field->report->type == HID_OUTPUT_REPORT) { 1174 map_led(LED_MISC); 1175 break; 1176 } 1177 map_key(BTN_MISC); 1178 break; 1179 } 1180 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1181 map_rel(REL_MISC); 1182 break; 1183 } 1184 map_abs(ABS_MISC); 1185 break; 1186 } 1187 1188 mapped: 1189 /* Mapping failed, bail out */ 1190 if (!bit) 1191 return; 1192 1193 if (device->driver->input_mapped && 1194 device->driver->input_mapped(device, hidinput, field, usage, 1195 &bit, &max) < 0) { 1196 /* 1197 * The driver indicated that no further generic handling 1198 * of the usage is desired. 1199 */ 1200 return; 1201 } 1202 1203 set_bit(usage->type, input->evbit); 1204 1205 /* 1206 * This part is *really* controversial: 1207 * - HID aims at being generic so we should do our best to export 1208 * all incoming events 1209 * - HID describes what events are, so there is no reason for ABS_X 1210 * to be mapped to ABS_Y 1211 * - HID is using *_MISC+N as a default value, but nothing prevents 1212 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1213 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1214 * processing) 1215 * 1216 * If devices still want to use this (at their own risk), they will 1217 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1218 * the default should be a reliable mapping. 1219 */ 1220 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1221 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1222 usage->code = find_next_zero_bit(bit, 1223 max + 1, 1224 usage->code); 1225 } else { 1226 device->status |= HID_STAT_DUP_DETECTED; 1227 goto ignore; 1228 } 1229 } 1230 1231 if (usage->code > max) 1232 goto ignore; 1233 1234 if (usage->type == EV_ABS) { 1235 1236 int a = field->logical_minimum; 1237 int b = field->logical_maximum; 1238 1239 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1240 a = field->logical_minimum = 0; 1241 b = field->logical_maximum = 255; 1242 } 1243 1244 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1245 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1246 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1247 1248 input_abs_set_res(input, usage->code, 1249 hidinput_calc_abs_res(field, usage->code)); 1250 1251 /* use a larger default input buffer for MT devices */ 1252 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1253 input_set_events_per_packet(input, 60); 1254 } 1255 1256 if (usage->type == EV_ABS && 1257 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1258 int i; 1259 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1260 input_set_abs_params(input, i, -1, 1, 0, 0); 1261 set_bit(i, input->absbit); 1262 } 1263 if (usage->hat_dir && !field->dpad) 1264 field->dpad = usage->code; 1265 } 1266 1267 /* for those devices which produce Consumer volume usage as relative, 1268 * we emulate pressing volumeup/volumedown appropriate number of times 1269 * in hidinput_hid_event() 1270 */ 1271 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1272 (usage->code == ABS_VOLUME)) { 1273 set_bit(KEY_VOLUMEUP, input->keybit); 1274 set_bit(KEY_VOLUMEDOWN, input->keybit); 1275 } 1276 1277 if (usage->type == EV_KEY) { 1278 set_bit(EV_MSC, input->evbit); 1279 set_bit(MSC_SCAN, input->mscbit); 1280 } 1281 1282 return; 1283 1284 ignore: 1285 usage->type = 0; 1286 usage->code = 0; 1287 } 1288 1289 static void hidinput_handle_scroll(struct hid_usage *usage, 1290 struct input_dev *input, 1291 __s32 value) 1292 { 1293 int code; 1294 int hi_res, lo_res; 1295 1296 if (value == 0) 1297 return; 1298 1299 if (usage->code == REL_WHEEL_HI_RES) 1300 code = REL_WHEEL; 1301 else 1302 code = REL_HWHEEL; 1303 1304 /* 1305 * Windows reports one wheel click as value 120. Where a high-res 1306 * scroll wheel is present, a fraction of 120 is reported instead. 1307 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1308 * adhere to the 120 expectation. 1309 */ 1310 hi_res = value * 120/usage->resolution_multiplier; 1311 1312 usage->wheel_accumulated += hi_res; 1313 lo_res = usage->wheel_accumulated/120; 1314 if (lo_res) 1315 usage->wheel_accumulated -= lo_res * 120; 1316 1317 input_event(input, EV_REL, code, lo_res); 1318 input_event(input, EV_REL, usage->code, hi_res); 1319 } 1320 1321 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1322 { 1323 struct input_dev *input; 1324 unsigned *quirks = &hid->quirks; 1325 1326 if (!usage->type) 1327 return; 1328 1329 if (usage->type == EV_PWR) { 1330 hidinput_update_battery(hid, value); 1331 return; 1332 } 1333 1334 if (!field->hidinput) 1335 return; 1336 1337 input = field->hidinput->input; 1338 1339 if (usage->type == EV_ABS && 1340 (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) || 1341 ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))) { 1342 value = field->logical_maximum - value; 1343 } 1344 1345 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1346 int hat_dir = usage->hat_dir; 1347 if (!hat_dir) 1348 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1349 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1350 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1351 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1352 return; 1353 } 1354 1355 if (usage->hid == HID_DG_INVERT) { 1356 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1357 return; 1358 } 1359 1360 if (usage->hid == HID_DG_INRANGE) { 1361 if (value) { 1362 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1363 return; 1364 } 1365 input_event(input, usage->type, usage->code, 0); 1366 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1367 return; 1368 } 1369 1370 if (usage->hid == HID_DG_TIPPRESSURE && (*quirks & HID_QUIRK_NOTOUCH)) { 1371 int a = field->logical_minimum; 1372 int b = field->logical_maximum; 1373 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1374 } 1375 1376 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1377 dbg_hid("Maximum Effects - %d\n",value); 1378 return; 1379 } 1380 1381 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1382 dbg_hid("PID Pool Report\n"); 1383 return; 1384 } 1385 1386 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1387 return; 1388 1389 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1390 usage->code == REL_HWHEEL_HI_RES)) { 1391 hidinput_handle_scroll(usage, input, value); 1392 return; 1393 } 1394 1395 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1396 (usage->code == ABS_VOLUME)) { 1397 int count = abs(value); 1398 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1399 int i; 1400 1401 for (i = 0; i < count; i++) { 1402 input_event(input, EV_KEY, direction, 1); 1403 input_sync(input); 1404 input_event(input, EV_KEY, direction, 0); 1405 input_sync(input); 1406 } 1407 return; 1408 } 1409 1410 /* 1411 * Ignore out-of-range values as per HID specification, 1412 * section 5.10 and 6.2.25, when NULL state bit is present. 1413 * When it's not, clamp the value to match Microsoft's input 1414 * driver as mentioned in "Required HID usages for digitizers": 1415 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1416 * 1417 * The logical_minimum < logical_maximum check is done so that we 1418 * don't unintentionally discard values sent by devices which 1419 * don't specify logical min and max. 1420 */ 1421 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1422 (field->logical_minimum < field->logical_maximum)) { 1423 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1424 (value < field->logical_minimum || 1425 value > field->logical_maximum)) { 1426 dbg_hid("Ignoring out-of-range value %x\n", value); 1427 return; 1428 } 1429 value = clamp(value, 1430 field->logical_minimum, 1431 field->logical_maximum); 1432 } 1433 1434 /* 1435 * Ignore reports for absolute data if the data didn't change. This is 1436 * not only an optimization but also fixes 'dead' key reports. Some 1437 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1438 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1439 * can only have one of them physically available. The 'dead' keys 1440 * report constant 0. As all map to the same keycode, they'd confuse 1441 * the input layer. If we filter the 'dead' keys on the HID level, we 1442 * skip the keycode translation and only forward real events. 1443 */ 1444 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1445 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1446 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1447 usage->usage_index < field->maxusage && 1448 value == field->value[usage->usage_index]) 1449 return; 1450 1451 /* report the usage code as scancode if the key status has changed */ 1452 if (usage->type == EV_KEY && 1453 (!test_bit(usage->code, input->key)) == value) 1454 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1455 1456 input_event(input, usage->type, usage->code, value); 1457 1458 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1459 usage->type == EV_KEY && value) { 1460 input_sync(input); 1461 input_event(input, usage->type, usage->code, 0); 1462 } 1463 } 1464 1465 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1466 { 1467 struct hid_input *hidinput; 1468 1469 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1470 return; 1471 1472 list_for_each_entry(hidinput, &hid->inputs, list) 1473 input_sync(hidinput->input); 1474 } 1475 EXPORT_SYMBOL_GPL(hidinput_report_event); 1476 1477 static int hidinput_find_field(struct hid_device *hid, unsigned int type, 1478 unsigned int code, struct hid_field **field) 1479 { 1480 struct hid_report *report; 1481 int i, j; 1482 1483 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1484 for (i = 0; i < report->maxfield; i++) { 1485 *field = report->field[i]; 1486 for (j = 0; j < (*field)->maxusage; j++) 1487 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1488 return j; 1489 } 1490 } 1491 return -1; 1492 } 1493 1494 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1495 { 1496 struct hid_report *report; 1497 struct hid_field *field; 1498 int i, j; 1499 1500 list_for_each_entry(report, 1501 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1502 list) { 1503 for (i = 0; i < report->maxfield; i++) { 1504 field = report->field[i]; 1505 for (j = 0; j < field->maxusage; j++) 1506 if (field->usage[j].type == EV_LED) 1507 return field; 1508 } 1509 } 1510 return NULL; 1511 } 1512 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1513 1514 unsigned int hidinput_count_leds(struct hid_device *hid) 1515 { 1516 struct hid_report *report; 1517 struct hid_field *field; 1518 int i, j; 1519 unsigned int count = 0; 1520 1521 list_for_each_entry(report, 1522 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1523 list) { 1524 for (i = 0; i < report->maxfield; i++) { 1525 field = report->field[i]; 1526 for (j = 0; j < field->maxusage; j++) 1527 if (field->usage[j].type == EV_LED && 1528 field->value[j]) 1529 count += 1; 1530 } 1531 } 1532 return count; 1533 } 1534 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1535 1536 static void hidinput_led_worker(struct work_struct *work) 1537 { 1538 struct hid_device *hid = container_of(work, struct hid_device, 1539 led_work); 1540 struct hid_field *field; 1541 struct hid_report *report; 1542 int ret; 1543 u32 len; 1544 __u8 *buf; 1545 1546 field = hidinput_get_led_field(hid); 1547 if (!field) 1548 return; 1549 1550 /* 1551 * field->report is accessed unlocked regarding HID core. So there might 1552 * be another incoming SET-LED request from user-space, which changes 1553 * the LED state while we assemble our outgoing buffer. However, this 1554 * doesn't matter as hid_output_report() correctly converts it into a 1555 * boolean value no matter what information is currently set on the LED 1556 * field (even garbage). So the remote device will always get a valid 1557 * request. 1558 * And in case we send a wrong value, a next led worker is spawned 1559 * for every SET-LED request so the following worker will send the 1560 * correct value, guaranteed! 1561 */ 1562 1563 report = field->report; 1564 1565 /* use custom SET_REPORT request if possible (asynchronous) */ 1566 if (hid->ll_driver->request) 1567 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1568 1569 /* fall back to generic raw-output-report */ 1570 len = hid_report_len(report); 1571 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1572 if (!buf) 1573 return; 1574 1575 hid_output_report(report, buf); 1576 /* synchronous output report */ 1577 ret = hid_hw_output_report(hid, buf, len); 1578 if (ret == -ENOSYS) 1579 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1580 HID_REQ_SET_REPORT); 1581 kfree(buf); 1582 } 1583 1584 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1585 unsigned int code, int value) 1586 { 1587 struct hid_device *hid = input_get_drvdata(dev); 1588 struct hid_field *field; 1589 int offset; 1590 1591 if (type == EV_FF) 1592 return input_ff_event(dev, type, code, value); 1593 1594 if (type != EV_LED) 1595 return -1; 1596 1597 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1598 hid_warn(dev, "event field not found\n"); 1599 return -1; 1600 } 1601 1602 hid_set_field(field, offset, value); 1603 1604 schedule_work(&hid->led_work); 1605 return 0; 1606 } 1607 1608 static int hidinput_open(struct input_dev *dev) 1609 { 1610 struct hid_device *hid = input_get_drvdata(dev); 1611 1612 return hid_hw_open(hid); 1613 } 1614 1615 static void hidinput_close(struct input_dev *dev) 1616 { 1617 struct hid_device *hid = input_get_drvdata(dev); 1618 1619 hid_hw_close(hid); 1620 } 1621 1622 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1623 struct hid_report *report, bool use_logical_max) 1624 { 1625 struct hid_usage *usage; 1626 bool update_needed = false; 1627 bool get_report_completed = false; 1628 int i, j; 1629 1630 if (report->maxfield == 0) 1631 return false; 1632 1633 for (i = 0; i < report->maxfield; i++) { 1634 __s32 value = use_logical_max ? 1635 report->field[i]->logical_maximum : 1636 report->field[i]->logical_minimum; 1637 1638 /* There is no good reason for a Resolution 1639 * Multiplier to have a count other than 1. 1640 * Ignore that case. 1641 */ 1642 if (report->field[i]->report_count != 1) 1643 continue; 1644 1645 for (j = 0; j < report->field[i]->maxusage; j++) { 1646 usage = &report->field[i]->usage[j]; 1647 1648 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1649 continue; 1650 1651 /* 1652 * If we have more than one feature within this 1653 * report we need to fill in the bits from the 1654 * others before we can overwrite the ones for the 1655 * Resolution Multiplier. 1656 * 1657 * But if we're not allowed to read from the device, 1658 * we just bail. Such a device should not exist 1659 * anyway. 1660 */ 1661 if (!get_report_completed && report->maxfield > 1) { 1662 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) 1663 return update_needed; 1664 1665 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1666 hid_hw_wait(hid); 1667 get_report_completed = true; 1668 } 1669 1670 report->field[i]->value[j] = value; 1671 update_needed = true; 1672 } 1673 } 1674 1675 return update_needed; 1676 } 1677 1678 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1679 { 1680 struct hid_report_enum *rep_enum; 1681 struct hid_report *rep; 1682 int ret; 1683 1684 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1685 list_for_each_entry(rep, &rep_enum->report_list, list) { 1686 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1687 rep, true); 1688 1689 if (update_needed) { 1690 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1691 if (ret) { 1692 __hidinput_change_resolution_multipliers(hid, 1693 rep, false); 1694 return; 1695 } 1696 } 1697 } 1698 1699 /* refresh our structs */ 1700 hid_setup_resolution_multiplier(hid); 1701 } 1702 1703 static void report_features(struct hid_device *hid) 1704 { 1705 struct hid_driver *drv = hid->driver; 1706 struct hid_report_enum *rep_enum; 1707 struct hid_report *rep; 1708 struct hid_usage *usage; 1709 int i, j; 1710 1711 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1712 list_for_each_entry(rep, &rep_enum->report_list, list) 1713 for (i = 0; i < rep->maxfield; i++) { 1714 /* Ignore if report count is out of bounds. */ 1715 if (rep->field[i]->report_count < 1) 1716 continue; 1717 1718 for (j = 0; j < rep->field[i]->maxusage; j++) { 1719 usage = &rep->field[i]->usage[j]; 1720 1721 /* Verify if Battery Strength feature is available */ 1722 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1723 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1724 rep->field[i], false); 1725 1726 if (drv->feature_mapping) 1727 drv->feature_mapping(hid, rep->field[i], usage); 1728 } 1729 } 1730 } 1731 1732 static struct hid_input *hidinput_allocate(struct hid_device *hid, 1733 unsigned int application) 1734 { 1735 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1736 struct input_dev *input_dev = input_allocate_device(); 1737 const char *suffix = NULL; 1738 size_t suffix_len, name_len; 1739 1740 if (!hidinput || !input_dev) 1741 goto fail; 1742 1743 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1744 hid->maxapplication > 1) { 1745 switch (application) { 1746 case HID_GD_KEYBOARD: 1747 suffix = "Keyboard"; 1748 break; 1749 case HID_GD_KEYPAD: 1750 suffix = "Keypad"; 1751 break; 1752 case HID_GD_MOUSE: 1753 suffix = "Mouse"; 1754 break; 1755 case HID_DG_PEN: 1756 /* 1757 * yes, there is an issue here: 1758 * DG_PEN -> "Stylus" 1759 * DG_STYLUS -> "Pen" 1760 * But changing this now means users with config snippets 1761 * will have to change it and the test suite will not be happy. 1762 */ 1763 suffix = "Stylus"; 1764 break; 1765 case HID_DG_STYLUS: 1766 suffix = "Pen"; 1767 break; 1768 case HID_DG_TOUCHSCREEN: 1769 suffix = "Touchscreen"; 1770 break; 1771 case HID_DG_TOUCHPAD: 1772 suffix = "Touchpad"; 1773 break; 1774 case HID_GD_SYSTEM_CONTROL: 1775 suffix = "System Control"; 1776 break; 1777 case HID_CP_CONSUMER_CONTROL: 1778 suffix = "Consumer Control"; 1779 break; 1780 case HID_GD_WIRELESS_RADIO_CTLS: 1781 suffix = "Wireless Radio Control"; 1782 break; 1783 case HID_GD_SYSTEM_MULTIAXIS: 1784 suffix = "System Multi Axis"; 1785 break; 1786 default: 1787 break; 1788 } 1789 } 1790 1791 if (suffix) { 1792 name_len = strlen(hid->name); 1793 suffix_len = strlen(suffix); 1794 if ((name_len < suffix_len) || 1795 strcmp(hid->name + name_len - suffix_len, suffix)) { 1796 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1797 hid->name, suffix); 1798 if (!hidinput->name) 1799 goto fail; 1800 } 1801 } 1802 1803 input_set_drvdata(input_dev, hid); 1804 input_dev->event = hidinput_input_event; 1805 input_dev->open = hidinput_open; 1806 input_dev->close = hidinput_close; 1807 input_dev->setkeycode = hidinput_setkeycode; 1808 input_dev->getkeycode = hidinput_getkeycode; 1809 1810 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1811 input_dev->phys = hid->phys; 1812 input_dev->uniq = hid->uniq; 1813 input_dev->id.bustype = hid->bus; 1814 input_dev->id.vendor = hid->vendor; 1815 input_dev->id.product = hid->product; 1816 input_dev->id.version = hid->version; 1817 input_dev->dev.parent = &hid->dev; 1818 1819 hidinput->input = input_dev; 1820 hidinput->application = application; 1821 list_add_tail(&hidinput->list, &hid->inputs); 1822 1823 INIT_LIST_HEAD(&hidinput->reports); 1824 1825 return hidinput; 1826 1827 fail: 1828 kfree(hidinput); 1829 input_free_device(input_dev); 1830 hid_err(hid, "Out of memory during hid input probe\n"); 1831 return NULL; 1832 } 1833 1834 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1835 { 1836 int i; 1837 unsigned long r = 0; 1838 1839 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1840 r |= hidinput->input->evbit[i]; 1841 1842 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1843 r |= hidinput->input->keybit[i]; 1844 1845 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1846 r |= hidinput->input->relbit[i]; 1847 1848 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1849 r |= hidinput->input->absbit[i]; 1850 1851 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1852 r |= hidinput->input->mscbit[i]; 1853 1854 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1855 r |= hidinput->input->ledbit[i]; 1856 1857 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1858 r |= hidinput->input->sndbit[i]; 1859 1860 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1861 r |= hidinput->input->ffbit[i]; 1862 1863 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1864 r |= hidinput->input->swbit[i]; 1865 1866 return !!r; 1867 } 1868 1869 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1870 struct hid_input *hidinput) 1871 { 1872 struct hid_report *report; 1873 int i, k; 1874 1875 list_del(&hidinput->list); 1876 input_free_device(hidinput->input); 1877 kfree(hidinput->name); 1878 1879 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1880 if (k == HID_OUTPUT_REPORT && 1881 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1882 continue; 1883 1884 list_for_each_entry(report, &hid->report_enum[k].report_list, 1885 list) { 1886 1887 for (i = 0; i < report->maxfield; i++) 1888 if (report->field[i]->hidinput == hidinput) 1889 report->field[i]->hidinput = NULL; 1890 } 1891 } 1892 1893 kfree(hidinput); 1894 } 1895 1896 static struct hid_input *hidinput_match(struct hid_report *report) 1897 { 1898 struct hid_device *hid = report->device; 1899 struct hid_input *hidinput; 1900 1901 list_for_each_entry(hidinput, &hid->inputs, list) { 1902 if (hidinput->report && 1903 hidinput->report->id == report->id) 1904 return hidinput; 1905 } 1906 1907 return NULL; 1908 } 1909 1910 static struct hid_input *hidinput_match_application(struct hid_report *report) 1911 { 1912 struct hid_device *hid = report->device; 1913 struct hid_input *hidinput; 1914 1915 list_for_each_entry(hidinput, &hid->inputs, list) { 1916 if (hidinput->application == report->application) 1917 return hidinput; 1918 1919 /* 1920 * Keep SystemControl and ConsumerControl applications together 1921 * with the main keyboard, if present. 1922 */ 1923 if ((report->application == HID_GD_SYSTEM_CONTROL || 1924 report->application == HID_CP_CONSUMER_CONTROL) && 1925 hidinput->application == HID_GD_KEYBOARD) { 1926 return hidinput; 1927 } 1928 } 1929 1930 return NULL; 1931 } 1932 1933 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1934 struct hid_report *report) 1935 { 1936 int i, j; 1937 1938 for (i = 0; i < report->maxfield; i++) 1939 for (j = 0; j < report->field[i]->maxusage; j++) 1940 hidinput_configure_usage(hidinput, report->field[i], 1941 report->field[i]->usage + j); 1942 } 1943 1944 /* 1945 * Register the input device; print a message. 1946 * Configure the input layer interface 1947 * Read all reports and initialize the absolute field values. 1948 */ 1949 1950 int hidinput_connect(struct hid_device *hid, unsigned int force) 1951 { 1952 struct hid_driver *drv = hid->driver; 1953 struct hid_report *report; 1954 struct hid_input *next, *hidinput = NULL; 1955 unsigned int application; 1956 int i, k; 1957 1958 INIT_LIST_HEAD(&hid->inputs); 1959 INIT_WORK(&hid->led_work, hidinput_led_worker); 1960 1961 hid->status &= ~HID_STAT_DUP_DETECTED; 1962 1963 if (!force) { 1964 for (i = 0; i < hid->maxcollection; i++) { 1965 struct hid_collection *col = &hid->collection[i]; 1966 if (col->type == HID_COLLECTION_APPLICATION || 1967 col->type == HID_COLLECTION_PHYSICAL) 1968 if (IS_INPUT_APPLICATION(col->usage)) 1969 break; 1970 } 1971 1972 if (i == hid->maxcollection) 1973 return -1; 1974 } 1975 1976 report_features(hid); 1977 1978 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1979 if (k == HID_OUTPUT_REPORT && 1980 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1981 continue; 1982 1983 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1984 1985 if (!report->maxfield) 1986 continue; 1987 1988 application = report->application; 1989 1990 /* 1991 * Find the previous hidinput report attached 1992 * to this report id. 1993 */ 1994 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1995 hidinput = hidinput_match(report); 1996 else if (hid->maxapplication > 1 && 1997 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1998 hidinput = hidinput_match_application(report); 1999 2000 if (!hidinput) { 2001 hidinput = hidinput_allocate(hid, application); 2002 if (!hidinput) 2003 goto out_unwind; 2004 } 2005 2006 hidinput_configure_usages(hidinput, report); 2007 2008 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 2009 hidinput->report = report; 2010 2011 list_add_tail(&report->hidinput_list, 2012 &hidinput->reports); 2013 } 2014 } 2015 2016 hidinput_change_resolution_multipliers(hid); 2017 2018 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 2019 if (drv->input_configured && 2020 drv->input_configured(hid, hidinput)) 2021 goto out_unwind; 2022 2023 if (!hidinput_has_been_populated(hidinput)) { 2024 /* no need to register an input device not populated */ 2025 hidinput_cleanup_hidinput(hid, hidinput); 2026 continue; 2027 } 2028 2029 if (input_register_device(hidinput->input)) 2030 goto out_unwind; 2031 hidinput->registered = true; 2032 } 2033 2034 if (list_empty(&hid->inputs)) { 2035 hid_err(hid, "No inputs registered, leaving\n"); 2036 goto out_unwind; 2037 } 2038 2039 if (hid->status & HID_STAT_DUP_DETECTED) 2040 hid_dbg(hid, 2041 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 2042 2043 return 0; 2044 2045 out_unwind: 2046 /* unwind the ones we already registered */ 2047 hidinput_disconnect(hid); 2048 2049 return -1; 2050 } 2051 EXPORT_SYMBOL_GPL(hidinput_connect); 2052 2053 void hidinput_disconnect(struct hid_device *hid) 2054 { 2055 struct hid_input *hidinput, *next; 2056 2057 hidinput_cleanup_battery(hid); 2058 2059 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 2060 list_del(&hidinput->list); 2061 if (hidinput->registered) 2062 input_unregister_device(hidinput->input); 2063 else 2064 input_free_device(hidinput->input); 2065 kfree(hidinput->name); 2066 kfree(hidinput); 2067 } 2068 2069 /* led_work is spawned by input_dev callbacks, but doesn't access the 2070 * parent input_dev at all. Once all input devices are removed, we 2071 * know that led_work will never get restarted, so we can cancel it 2072 * synchronously and are safe. */ 2073 cancel_work_sync(&hid->led_work); 2074 } 2075 EXPORT_SYMBOL_GPL(hidinput_disconnect); 2076