1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 2000-2001 Vojtech Pavlik 4 * Copyright (c) 2006-2010 Jiri Kosina 5 * 6 * HID to Linux Input mapping 7 */ 8 9 /* 10 * 11 * Should you need to contact me, the author, you can do so either by 12 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 13 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 14 */ 15 16 #include <linux/module.h> 17 #include <linux/slab.h> 18 #include <linux/kernel.h> 19 20 #include <linux/hid.h> 21 #include <linux/hid-debug.h> 22 23 #include "hid-ids.h" 24 25 #define unk KEY_UNKNOWN 26 27 static const unsigned char hid_keyboard[256] = { 28 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, 29 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, 30 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, 31 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, 32 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, 33 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, 34 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, 35 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, 36 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk, 37 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk, 38 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 39 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk, 40 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 41 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk, 42 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, 43 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk 44 }; 45 46 static const struct { 47 __s32 x; 48 __s32 y; 49 } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; 50 51 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c)) 52 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c)) 53 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c)) 54 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c)) 55 56 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 57 &max, EV_ABS, (c)) 58 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 59 &max, EV_KEY, (c)) 60 61 static bool match_scancode(struct hid_usage *usage, 62 unsigned int cur_idx, unsigned int scancode) 63 { 64 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode; 65 } 66 67 static bool match_keycode(struct hid_usage *usage, 68 unsigned int cur_idx, unsigned int keycode) 69 { 70 /* 71 * We should exclude unmapped usages when doing lookup by keycode. 72 */ 73 return (usage->type == EV_KEY && usage->code == keycode); 74 } 75 76 static bool match_index(struct hid_usage *usage, 77 unsigned int cur_idx, unsigned int idx) 78 { 79 return cur_idx == idx; 80 } 81 82 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage, 83 unsigned int cur_idx, unsigned int val); 84 85 static struct hid_usage *hidinput_find_key(struct hid_device *hid, 86 hid_usage_cmp_t match, 87 unsigned int value, 88 unsigned int *usage_idx) 89 { 90 unsigned int i, j, k, cur_idx = 0; 91 struct hid_report *report; 92 struct hid_usage *usage; 93 94 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 95 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 96 for (i = 0; i < report->maxfield; i++) { 97 for (j = 0; j < report->field[i]->maxusage; j++) { 98 usage = report->field[i]->usage + j; 99 if (usage->type == EV_KEY || usage->type == 0) { 100 if (match(usage, cur_idx, value)) { 101 if (usage_idx) 102 *usage_idx = cur_idx; 103 return usage; 104 } 105 cur_idx++; 106 } 107 } 108 } 109 } 110 } 111 return NULL; 112 } 113 114 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid, 115 const struct input_keymap_entry *ke, 116 unsigned int *index) 117 { 118 struct hid_usage *usage; 119 unsigned int scancode; 120 121 if (ke->flags & INPUT_KEYMAP_BY_INDEX) 122 usage = hidinput_find_key(hid, match_index, ke->index, index); 123 else if (input_scancode_to_scalar(ke, &scancode) == 0) 124 usage = hidinput_find_key(hid, match_scancode, scancode, index); 125 else 126 usage = NULL; 127 128 return usage; 129 } 130 131 static int hidinput_getkeycode(struct input_dev *dev, 132 struct input_keymap_entry *ke) 133 { 134 struct hid_device *hid = input_get_drvdata(dev); 135 struct hid_usage *usage; 136 unsigned int scancode, index; 137 138 usage = hidinput_locate_usage(hid, ke, &index); 139 if (usage) { 140 ke->keycode = usage->type == EV_KEY ? 141 usage->code : KEY_RESERVED; 142 ke->index = index; 143 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE); 144 ke->len = sizeof(scancode); 145 memcpy(ke->scancode, &scancode, sizeof(scancode)); 146 return 0; 147 } 148 149 return -EINVAL; 150 } 151 152 static int hidinput_setkeycode(struct input_dev *dev, 153 const struct input_keymap_entry *ke, 154 unsigned int *old_keycode) 155 { 156 struct hid_device *hid = input_get_drvdata(dev); 157 struct hid_usage *usage; 158 159 usage = hidinput_locate_usage(hid, ke, NULL); 160 if (usage) { 161 *old_keycode = usage->type == EV_KEY ? 162 usage->code : KEY_RESERVED; 163 usage->type = EV_KEY; 164 usage->code = ke->keycode; 165 166 clear_bit(*old_keycode, dev->keybit); 167 set_bit(usage->code, dev->keybit); 168 dbg_hid("Assigned keycode %d to HID usage code %x\n", 169 usage->code, usage->hid); 170 171 /* 172 * Set the keybit for the old keycode if the old keycode is used 173 * by another key 174 */ 175 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL)) 176 set_bit(*old_keycode, dev->keybit); 177 178 return 0; 179 } 180 181 return -EINVAL; 182 } 183 184 185 /** 186 * hidinput_calc_abs_res - calculate an absolute axis resolution 187 * @field: the HID report field to calculate resolution for 188 * @code: axis code 189 * 190 * The formula is: 191 * (logical_maximum - logical_minimum) 192 * resolution = ---------------------------------------------------------- 193 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent 194 * 195 * as seen in the HID specification v1.11 6.2.2.7 Global Items. 196 * 197 * Only exponent 1 length units are processed. Centimeters and inches are 198 * converted to millimeters. Degrees are converted to radians. 199 */ 200 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) 201 { 202 __s32 unit_exponent = field->unit_exponent; 203 __s32 logical_extents = field->logical_maximum - 204 field->logical_minimum; 205 __s32 physical_extents = field->physical_maximum - 206 field->physical_minimum; 207 __s32 prev; 208 209 /* Check if the extents are sane */ 210 if (logical_extents <= 0 || physical_extents <= 0) 211 return 0; 212 213 /* 214 * Verify and convert units. 215 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding 216 */ 217 switch (code) { 218 case ABS_X: 219 case ABS_Y: 220 case ABS_Z: 221 case ABS_MT_POSITION_X: 222 case ABS_MT_POSITION_Y: 223 case ABS_MT_TOOL_X: 224 case ABS_MT_TOOL_Y: 225 case ABS_MT_TOUCH_MAJOR: 226 case ABS_MT_TOUCH_MINOR: 227 if (field->unit == 0x11) { /* If centimeters */ 228 /* Convert to millimeters */ 229 unit_exponent += 1; 230 } else if (field->unit == 0x13) { /* If inches */ 231 /* Convert to millimeters */ 232 prev = physical_extents; 233 physical_extents *= 254; 234 if (physical_extents < prev) 235 return 0; 236 unit_exponent -= 1; 237 } else { 238 return 0; 239 } 240 break; 241 242 case ABS_RX: 243 case ABS_RY: 244 case ABS_RZ: 245 case ABS_WHEEL: 246 case ABS_TILT_X: 247 case ABS_TILT_Y: 248 if (field->unit == 0x14) { /* If degrees */ 249 /* Convert to radians */ 250 prev = logical_extents; 251 logical_extents *= 573; 252 if (logical_extents < prev) 253 return 0; 254 unit_exponent += 1; 255 } else if (field->unit != 0x12) { /* If not radians */ 256 return 0; 257 } 258 break; 259 260 default: 261 return 0; 262 } 263 264 /* Apply negative unit exponent */ 265 for (; unit_exponent < 0; unit_exponent++) { 266 prev = logical_extents; 267 logical_extents *= 10; 268 if (logical_extents < prev) 269 return 0; 270 } 271 /* Apply positive unit exponent */ 272 for (; unit_exponent > 0; unit_exponent--) { 273 prev = physical_extents; 274 physical_extents *= 10; 275 if (physical_extents < prev) 276 return 0; 277 } 278 279 /* Calculate resolution */ 280 return DIV_ROUND_CLOSEST(logical_extents, physical_extents); 281 } 282 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res); 283 284 #ifdef CONFIG_HID_BATTERY_STRENGTH 285 static enum power_supply_property hidinput_battery_props[] = { 286 POWER_SUPPLY_PROP_PRESENT, 287 POWER_SUPPLY_PROP_ONLINE, 288 POWER_SUPPLY_PROP_CAPACITY, 289 POWER_SUPPLY_PROP_MODEL_NAME, 290 POWER_SUPPLY_PROP_STATUS, 291 POWER_SUPPLY_PROP_SCOPE, 292 }; 293 294 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */ 295 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */ 296 #define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */ 297 298 static const struct hid_device_id hid_battery_quirks[] = { 299 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 300 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO), 301 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 302 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 303 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI), 304 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 305 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 306 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI), 307 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 308 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 309 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO), 310 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 311 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 312 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI), 313 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 314 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, 315 USB_DEVICE_ID_ELECOM_BM084), 316 HID_BATTERY_QUIRK_IGNORE }, 317 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL, 318 USB_DEVICE_ID_SYMBOL_SCANNER_3), 319 HID_BATTERY_QUIRK_IGNORE }, 320 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK, 321 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), 322 HID_BATTERY_QUIRK_IGNORE }, 323 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 324 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD), 325 HID_BATTERY_QUIRK_IGNORE }, 326 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN), 327 HID_BATTERY_QUIRK_IGNORE }, 328 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN), 329 HID_BATTERY_QUIRK_IGNORE }, 330 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15), 331 HID_BATTERY_QUIRK_IGNORE }, 332 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15), 333 HID_BATTERY_QUIRK_IGNORE }, 334 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN), 335 HID_BATTERY_QUIRK_IGNORE }, 336 {} 337 }; 338 339 static unsigned find_battery_quirk(struct hid_device *hdev) 340 { 341 unsigned quirks = 0; 342 const struct hid_device_id *match; 343 344 match = hid_match_id(hdev, hid_battery_quirks); 345 if (match != NULL) 346 quirks = match->driver_data; 347 348 return quirks; 349 } 350 351 static int hidinput_scale_battery_capacity(struct hid_device *dev, 352 int value) 353 { 354 if (dev->battery_min < dev->battery_max && 355 value >= dev->battery_min && value <= dev->battery_max) 356 value = ((value - dev->battery_min) * 100) / 357 (dev->battery_max - dev->battery_min); 358 359 return value; 360 } 361 362 static int hidinput_query_battery_capacity(struct hid_device *dev) 363 { 364 u8 *buf; 365 int ret; 366 367 buf = kmalloc(4, GFP_KERNEL); 368 if (!buf) 369 return -ENOMEM; 370 371 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4, 372 dev->battery_report_type, HID_REQ_GET_REPORT); 373 if (ret < 2) { 374 kfree(buf); 375 return -ENODATA; 376 } 377 378 ret = hidinput_scale_battery_capacity(dev, buf[1]); 379 kfree(buf); 380 return ret; 381 } 382 383 static int hidinput_get_battery_property(struct power_supply *psy, 384 enum power_supply_property prop, 385 union power_supply_propval *val) 386 { 387 struct hid_device *dev = power_supply_get_drvdata(psy); 388 int value; 389 int ret = 0; 390 391 switch (prop) { 392 case POWER_SUPPLY_PROP_PRESENT: 393 case POWER_SUPPLY_PROP_ONLINE: 394 val->intval = 1; 395 break; 396 397 case POWER_SUPPLY_PROP_CAPACITY: 398 if (dev->battery_status != HID_BATTERY_REPORTED && 399 !dev->battery_avoid_query) { 400 value = hidinput_query_battery_capacity(dev); 401 if (value < 0) 402 return value; 403 } else { 404 value = dev->battery_capacity; 405 } 406 407 val->intval = value; 408 break; 409 410 case POWER_SUPPLY_PROP_MODEL_NAME: 411 val->strval = dev->name; 412 break; 413 414 case POWER_SUPPLY_PROP_STATUS: 415 if (dev->battery_status != HID_BATTERY_REPORTED && 416 !dev->battery_avoid_query) { 417 value = hidinput_query_battery_capacity(dev); 418 if (value < 0) 419 return value; 420 421 dev->battery_capacity = value; 422 dev->battery_status = HID_BATTERY_QUERIED; 423 } 424 425 if (dev->battery_status == HID_BATTERY_UNKNOWN) 426 val->intval = POWER_SUPPLY_STATUS_UNKNOWN; 427 else 428 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 429 break; 430 431 case POWER_SUPPLY_PROP_SCOPE: 432 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 433 break; 434 435 default: 436 ret = -EINVAL; 437 break; 438 } 439 440 return ret; 441 } 442 443 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 444 struct hid_field *field, bool is_percentage) 445 { 446 struct power_supply_desc *psy_desc; 447 struct power_supply_config psy_cfg = { .drv_data = dev, }; 448 unsigned quirks; 449 s32 min, max; 450 int error; 451 452 if (dev->battery) 453 return 0; /* already initialized? */ 454 455 quirks = find_battery_quirk(dev); 456 457 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 458 dev->bus, dev->vendor, dev->product, dev->version, quirks); 459 460 if (quirks & HID_BATTERY_QUIRK_IGNORE) 461 return 0; 462 463 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); 464 if (!psy_desc) 465 return -ENOMEM; 466 467 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", 468 strlen(dev->uniq) ? 469 dev->uniq : dev_name(&dev->dev)); 470 if (!psy_desc->name) { 471 error = -ENOMEM; 472 goto err_free_mem; 473 } 474 475 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 476 psy_desc->properties = hidinput_battery_props; 477 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); 478 psy_desc->use_for_apm = 0; 479 psy_desc->get_property = hidinput_get_battery_property; 480 481 min = field->logical_minimum; 482 max = field->logical_maximum; 483 484 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) { 485 min = 0; 486 max = 100; 487 } 488 489 if (quirks & HID_BATTERY_QUIRK_FEATURE) 490 report_type = HID_FEATURE_REPORT; 491 492 dev->battery_min = min; 493 dev->battery_max = max; 494 dev->battery_report_type = report_type; 495 dev->battery_report_id = field->report->id; 496 497 /* 498 * Stylus is normally not connected to the device and thus we 499 * can't query the device and get meaningful battery strength. 500 * We have to wait for the device to report it on its own. 501 */ 502 dev->battery_avoid_query = report_type == HID_INPUT_REPORT && 503 field->physical == HID_DG_STYLUS; 504 505 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); 506 if (IS_ERR(dev->battery)) { 507 error = PTR_ERR(dev->battery); 508 hid_warn(dev, "can't register power supply: %d\n", error); 509 goto err_free_name; 510 } 511 512 power_supply_powers(dev->battery, &dev->dev); 513 return 0; 514 515 err_free_name: 516 kfree(psy_desc->name); 517 err_free_mem: 518 kfree(psy_desc); 519 dev->battery = NULL; 520 return error; 521 } 522 523 static void hidinput_cleanup_battery(struct hid_device *dev) 524 { 525 const struct power_supply_desc *psy_desc; 526 527 if (!dev->battery) 528 return; 529 530 psy_desc = dev->battery->desc; 531 power_supply_unregister(dev->battery); 532 kfree(psy_desc->name); 533 kfree(psy_desc); 534 dev->battery = NULL; 535 } 536 537 static void hidinput_update_battery(struct hid_device *dev, int value) 538 { 539 int capacity; 540 541 if (!dev->battery) 542 return; 543 544 if (value == 0 || value < dev->battery_min || value > dev->battery_max) 545 return; 546 547 capacity = hidinput_scale_battery_capacity(dev, value); 548 549 if (dev->battery_status != HID_BATTERY_REPORTED || 550 capacity != dev->battery_capacity || 551 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) { 552 dev->battery_capacity = capacity; 553 dev->battery_status = HID_BATTERY_REPORTED; 554 dev->battery_ratelimit_time = 555 ktime_add_ms(ktime_get_coarse(), 30 * 1000); 556 power_supply_changed(dev->battery); 557 } 558 } 559 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 560 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 561 struct hid_field *field, bool is_percentage) 562 { 563 return 0; 564 } 565 566 static void hidinput_cleanup_battery(struct hid_device *dev) 567 { 568 } 569 570 static void hidinput_update_battery(struct hid_device *dev, int value) 571 { 572 } 573 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 574 575 static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field, 576 unsigned int type, unsigned int usage) 577 { 578 struct hid_collection *collection; 579 580 collection = &device->collection[field->usage->collection_index]; 581 582 return collection->type == type && collection->usage == usage; 583 } 584 585 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 586 struct hid_usage *usage) 587 { 588 struct input_dev *input = hidinput->input; 589 struct hid_device *device = input_get_drvdata(input); 590 int max = 0, code; 591 unsigned long *bit = NULL; 592 593 field->hidinput = hidinput; 594 595 if (field->flags & HID_MAIN_ITEM_CONSTANT) 596 goto ignore; 597 598 /* Ignore if report count is out of bounds. */ 599 if (field->report_count < 1) 600 goto ignore; 601 602 /* only LED usages are supported in output fields */ 603 if (field->report_type == HID_OUTPUT_REPORT && 604 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 605 goto ignore; 606 } 607 608 if (device->driver->input_mapping) { 609 int ret = device->driver->input_mapping(device, hidinput, field, 610 usage, &bit, &max); 611 if (ret > 0) 612 goto mapped; 613 if (ret < 0) 614 goto ignore; 615 } 616 617 switch (usage->hid & HID_USAGE_PAGE) { 618 case HID_UP_UNDEFINED: 619 goto ignore; 620 621 case HID_UP_KEYBOARD: 622 set_bit(EV_REP, input->evbit); 623 624 if ((usage->hid & HID_USAGE) < 256) { 625 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 626 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 627 } else 628 map_key(KEY_UNKNOWN); 629 630 break; 631 632 case HID_UP_BUTTON: 633 code = ((usage->hid - 1) & HID_USAGE); 634 635 switch (field->application) { 636 case HID_GD_MOUSE: 637 case HID_GD_POINTER: code += BTN_MOUSE; break; 638 case HID_GD_JOYSTICK: 639 if (code <= 0xf) 640 code += BTN_JOYSTICK; 641 else 642 code += BTN_TRIGGER_HAPPY - 0x10; 643 break; 644 case HID_GD_GAMEPAD: 645 if (code <= 0xf) 646 code += BTN_GAMEPAD; 647 else 648 code += BTN_TRIGGER_HAPPY - 0x10; 649 break; 650 case HID_CP_CONSUMER_CONTROL: 651 if (hidinput_field_in_collection(device, field, 652 HID_COLLECTION_NAMED_ARRAY, 653 HID_CP_PROGRAMMABLEBUTTONS)) { 654 if (code <= 0x1d) 655 code += KEY_MACRO1; 656 else 657 code += BTN_TRIGGER_HAPPY - 0x1e; 658 break; 659 } 660 fallthrough; 661 default: 662 switch (field->physical) { 663 case HID_GD_MOUSE: 664 case HID_GD_POINTER: code += BTN_MOUSE; break; 665 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 666 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 667 default: code += BTN_MISC; 668 } 669 } 670 671 map_key(code); 672 break; 673 674 case HID_UP_SIMULATION: 675 switch (usage->hid & 0xffff) { 676 case 0xba: map_abs(ABS_RUDDER); break; 677 case 0xbb: map_abs(ABS_THROTTLE); break; 678 case 0xc4: map_abs(ABS_GAS); break; 679 case 0xc5: map_abs(ABS_BRAKE); break; 680 case 0xc8: map_abs(ABS_WHEEL); break; 681 default: goto ignore; 682 } 683 break; 684 685 case HID_UP_GENDESK: 686 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 687 switch (usage->hid & 0xf) { 688 case 0x1: map_key_clear(KEY_POWER); break; 689 case 0x2: map_key_clear(KEY_SLEEP); break; 690 case 0x3: map_key_clear(KEY_WAKEUP); break; 691 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 692 case 0x5: map_key_clear(KEY_MENU); break; 693 case 0x6: map_key_clear(KEY_PROG1); break; 694 case 0x7: map_key_clear(KEY_HELP); break; 695 case 0x8: map_key_clear(KEY_EXIT); break; 696 case 0x9: map_key_clear(KEY_SELECT); break; 697 case 0xa: map_key_clear(KEY_RIGHT); break; 698 case 0xb: map_key_clear(KEY_LEFT); break; 699 case 0xc: map_key_clear(KEY_UP); break; 700 case 0xd: map_key_clear(KEY_DOWN); break; 701 case 0xe: map_key_clear(KEY_POWER2); break; 702 case 0xf: map_key_clear(KEY_RESTART); break; 703 default: goto unknown; 704 } 705 break; 706 } 707 708 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */ 709 switch (usage->hid & 0xf) { 710 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break; 711 default: goto ignore; 712 } 713 break; 714 } 715 716 /* 717 * Some lazy vendors declare 255 usages for System Control, 718 * leading to the creation of ABS_X|Y axis and too many others. 719 * It wouldn't be a problem if joydev doesn't consider the 720 * device as a joystick then. 721 */ 722 if (field->application == HID_GD_SYSTEM_CONTROL) 723 goto ignore; 724 725 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 726 switch (usage->hid) { 727 case HID_GD_UP: usage->hat_dir = 1; break; 728 case HID_GD_DOWN: usage->hat_dir = 5; break; 729 case HID_GD_RIGHT: usage->hat_dir = 3; break; 730 case HID_GD_LEFT: usage->hat_dir = 7; break; 731 default: goto unknown; 732 } 733 if (field->dpad) { 734 map_abs(field->dpad); 735 goto ignore; 736 } 737 map_abs(ABS_HAT0X); 738 break; 739 } 740 741 switch (usage->hid) { 742 /* These usage IDs map directly to the usage codes. */ 743 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 744 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 745 if (field->flags & HID_MAIN_ITEM_RELATIVE) 746 map_rel(usage->hid & 0xf); 747 else 748 map_abs_clear(usage->hid & 0xf); 749 break; 750 751 case HID_GD_WHEEL: 752 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 753 set_bit(REL_WHEEL, input->relbit); 754 map_rel(REL_WHEEL_HI_RES); 755 } else { 756 map_abs(usage->hid & 0xf); 757 } 758 break; 759 case HID_GD_SLIDER: case HID_GD_DIAL: 760 if (field->flags & HID_MAIN_ITEM_RELATIVE) 761 map_rel(usage->hid & 0xf); 762 else 763 map_abs(usage->hid & 0xf); 764 break; 765 766 case HID_GD_HATSWITCH: 767 usage->hat_min = field->logical_minimum; 768 usage->hat_max = field->logical_maximum; 769 map_abs(ABS_HAT0X); 770 break; 771 772 case HID_GD_START: map_key_clear(BTN_START); break; 773 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 774 775 case HID_GD_RFKILL_BTN: 776 /* MS wireless radio ctl extension, also check CA */ 777 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 778 map_key_clear(KEY_RFKILL); 779 /* We need to simulate the btn release */ 780 field->flags |= HID_MAIN_ITEM_RELATIVE; 781 break; 782 } 783 goto unknown; 784 785 default: goto unknown; 786 } 787 788 break; 789 790 case HID_UP_LED: 791 switch (usage->hid & 0xffff) { /* HID-Value: */ 792 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 793 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 794 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 795 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 796 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 797 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 798 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 799 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 800 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 801 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 802 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 803 804 default: goto ignore; 805 } 806 break; 807 808 case HID_UP_DIGITIZER: 809 if ((field->application & 0xff) == 0x01) /* Digitizer */ 810 __set_bit(INPUT_PROP_POINTER, input->propbit); 811 else if ((field->application & 0xff) == 0x02) /* Pen */ 812 __set_bit(INPUT_PROP_DIRECT, input->propbit); 813 814 switch (usage->hid & 0xff) { 815 case 0x00: /* Undefined */ 816 goto ignore; 817 818 case 0x30: /* TipPressure */ 819 if (!test_bit(BTN_TOUCH, input->keybit)) { 820 device->quirks |= HID_QUIRK_NOTOUCH; 821 set_bit(EV_KEY, input->evbit); 822 set_bit(BTN_TOUCH, input->keybit); 823 } 824 map_abs_clear(ABS_PRESSURE); 825 break; 826 827 case 0x32: /* InRange */ 828 switch (field->physical & 0xff) { 829 case 0x21: map_key(BTN_TOOL_MOUSE); break; 830 case 0x22: map_key(BTN_TOOL_FINGER); break; 831 default: map_key(BTN_TOOL_PEN); break; 832 } 833 break; 834 835 case 0x3b: /* Battery Strength */ 836 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false); 837 usage->type = EV_PWR; 838 return; 839 840 case 0x3c: /* Invert */ 841 map_key_clear(BTN_TOOL_RUBBER); 842 break; 843 844 case 0x3d: /* X Tilt */ 845 map_abs_clear(ABS_TILT_X); 846 break; 847 848 case 0x3e: /* Y Tilt */ 849 map_abs_clear(ABS_TILT_Y); 850 break; 851 852 case 0x33: /* Touch */ 853 case 0x42: /* TipSwitch */ 854 case 0x43: /* TipSwitch2 */ 855 device->quirks &= ~HID_QUIRK_NOTOUCH; 856 map_key_clear(BTN_TOUCH); 857 break; 858 859 case 0x44: /* BarrelSwitch */ 860 map_key_clear(BTN_STYLUS); 861 break; 862 863 case 0x45: /* ERASER */ 864 /* 865 * This event is reported when eraser tip touches the surface. 866 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when 867 * tool gets in proximity. 868 */ 869 map_key_clear(BTN_TOUCH); 870 break; 871 872 case 0x46: /* TabletPick */ 873 case 0x5a: /* SecondaryBarrelSwitch */ 874 map_key_clear(BTN_STYLUS2); 875 break; 876 877 case 0x5b: /* TransducerSerialNumber */ 878 case 0x6e: /* TransducerSerialNumber2 */ 879 usage->type = EV_MSC; 880 usage->code = MSC_SERIAL; 881 bit = input->mscbit; 882 max = MSC_MAX; 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 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break; 996 997 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 998 case 0x0e2: map_key_clear(KEY_MUTE); break; 999 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 1000 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 1001 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 1002 case 0x0f5: map_key_clear(KEY_SLOW); break; 1003 1004 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 1005 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 1006 case 0x183: map_key_clear(KEY_CONFIG); break; 1007 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 1008 case 0x185: map_key_clear(KEY_EDITOR); break; 1009 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 1010 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 1011 case 0x188: map_key_clear(KEY_PRESENTATION); break; 1012 case 0x189: map_key_clear(KEY_DATABASE); break; 1013 case 0x18a: map_key_clear(KEY_MAIL); break; 1014 case 0x18b: map_key_clear(KEY_NEWS); break; 1015 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 1016 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 1017 case 0x18e: map_key_clear(KEY_CALENDAR); break; 1018 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 1019 case 0x190: map_key_clear(KEY_JOURNAL); break; 1020 case 0x191: map_key_clear(KEY_FINANCE); break; 1021 case 0x192: map_key_clear(KEY_CALC); break; 1022 case 0x193: map_key_clear(KEY_PLAYER); break; 1023 case 0x194: map_key_clear(KEY_FILE); break; 1024 case 0x196: map_key_clear(KEY_WWW); break; 1025 case 0x199: map_key_clear(KEY_CHAT); break; 1026 case 0x19c: map_key_clear(KEY_LOGOFF); break; 1027 case 0x19e: map_key_clear(KEY_COFFEE); break; 1028 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 1029 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 1030 case 0x1a3: map_key_clear(KEY_NEXT); break; 1031 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 1032 case 0x1a6: map_key_clear(KEY_HELP); break; 1033 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 1034 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 1035 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 1036 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 1037 case 0x1b4: map_key_clear(KEY_FILE); break; 1038 case 0x1b6: map_key_clear(KEY_IMAGES); break; 1039 case 0x1b7: map_key_clear(KEY_AUDIO); break; 1040 case 0x1b8: map_key_clear(KEY_VIDEO); break; 1041 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1042 case 0x1bd: map_key_clear(KEY_INFO); break; 1043 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1044 case 0x201: map_key_clear(KEY_NEW); break; 1045 case 0x202: map_key_clear(KEY_OPEN); break; 1046 case 0x203: map_key_clear(KEY_CLOSE); break; 1047 case 0x204: map_key_clear(KEY_EXIT); break; 1048 case 0x207: map_key_clear(KEY_SAVE); break; 1049 case 0x208: map_key_clear(KEY_PRINT); break; 1050 case 0x209: map_key_clear(KEY_PROPS); break; 1051 case 0x21a: map_key_clear(KEY_UNDO); break; 1052 case 0x21b: map_key_clear(KEY_COPY); break; 1053 case 0x21c: map_key_clear(KEY_CUT); break; 1054 case 0x21d: map_key_clear(KEY_PASTE); break; 1055 case 0x21f: map_key_clear(KEY_FIND); break; 1056 case 0x221: map_key_clear(KEY_SEARCH); break; 1057 case 0x222: map_key_clear(KEY_GOTO); break; 1058 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1059 case 0x224: map_key_clear(KEY_BACK); break; 1060 case 0x225: map_key_clear(KEY_FORWARD); break; 1061 case 0x226: map_key_clear(KEY_STOP); break; 1062 case 0x227: map_key_clear(KEY_REFRESH); break; 1063 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1064 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1065 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1066 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1067 case 0x232: map_key_clear(KEY_FULL_SCREEN); break; 1068 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1069 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1070 case 0x238: /* AC Pan */ 1071 set_bit(REL_HWHEEL, input->relbit); 1072 map_rel(REL_HWHEEL_HI_RES); 1073 break; 1074 case 0x23d: map_key_clear(KEY_EDIT); break; 1075 case 0x25f: map_key_clear(KEY_CANCEL); break; 1076 case 0x269: map_key_clear(KEY_INSERT); break; 1077 case 0x26a: map_key_clear(KEY_DELETE); break; 1078 case 0x279: map_key_clear(KEY_REDO); break; 1079 1080 case 0x289: map_key_clear(KEY_REPLY); break; 1081 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1082 case 0x28c: map_key_clear(KEY_SEND); break; 1083 1084 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break; 1085 1086 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1087 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1088 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1089 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1090 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1091 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1092 1093 case 0x29f: map_key_clear(KEY_SCALE); break; 1094 1095 default: map_key_clear(KEY_UNKNOWN); 1096 } 1097 break; 1098 1099 case HID_UP_GENDEVCTRLS: 1100 switch (usage->hid) { 1101 case HID_DC_BATTERYSTRENGTH: 1102 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false); 1103 usage->type = EV_PWR; 1104 return; 1105 } 1106 goto unknown; 1107 1108 case HID_UP_BATTERY: 1109 switch (usage->hid) { 1110 case HID_BAT_ABSOLUTESTATEOFCHARGE: 1111 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true); 1112 usage->type = EV_PWR; 1113 return; 1114 } 1115 goto unknown; 1116 1117 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1118 set_bit(EV_REP, input->evbit); 1119 switch (usage->hid & HID_USAGE) { 1120 case 0x021: map_key_clear(KEY_PRINT); break; 1121 case 0x070: map_key_clear(KEY_HP); break; 1122 case 0x071: map_key_clear(KEY_CAMERA); break; 1123 case 0x072: map_key_clear(KEY_SOUND); break; 1124 case 0x073: map_key_clear(KEY_QUESTION); break; 1125 case 0x080: map_key_clear(KEY_EMAIL); break; 1126 case 0x081: map_key_clear(KEY_CHAT); break; 1127 case 0x082: map_key_clear(KEY_SEARCH); break; 1128 case 0x083: map_key_clear(KEY_CONNECT); break; 1129 case 0x084: map_key_clear(KEY_FINANCE); break; 1130 case 0x085: map_key_clear(KEY_SPORT); break; 1131 case 0x086: map_key_clear(KEY_SHOP); break; 1132 default: goto ignore; 1133 } 1134 break; 1135 1136 case HID_UP_HPVENDOR2: 1137 set_bit(EV_REP, input->evbit); 1138 switch (usage->hid & HID_USAGE) { 1139 case 0x001: map_key_clear(KEY_MICMUTE); break; 1140 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1141 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1142 default: goto ignore; 1143 } 1144 break; 1145 1146 case HID_UP_MSVENDOR: 1147 goto ignore; 1148 1149 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1150 set_bit(EV_REP, input->evbit); 1151 goto ignore; 1152 1153 case HID_UP_LOGIVENDOR: 1154 /* intentional fallback */ 1155 case HID_UP_LOGIVENDOR2: 1156 /* intentional fallback */ 1157 case HID_UP_LOGIVENDOR3: 1158 goto ignore; 1159 1160 case HID_UP_PID: 1161 switch (usage->hid & HID_USAGE) { 1162 case 0xa4: map_key_clear(BTN_DEAD); break; 1163 default: goto ignore; 1164 } 1165 break; 1166 1167 default: 1168 unknown: 1169 if (field->report_size == 1) { 1170 if (field->report->type == HID_OUTPUT_REPORT) { 1171 map_led(LED_MISC); 1172 break; 1173 } 1174 map_key(BTN_MISC); 1175 break; 1176 } 1177 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1178 map_rel(REL_MISC); 1179 break; 1180 } 1181 map_abs(ABS_MISC); 1182 break; 1183 } 1184 1185 mapped: 1186 /* Mapping failed, bail out */ 1187 if (!bit) 1188 return; 1189 1190 if (device->driver->input_mapped && 1191 device->driver->input_mapped(device, hidinput, field, usage, 1192 &bit, &max) < 0) { 1193 /* 1194 * The driver indicated that no further generic handling 1195 * of the usage is desired. 1196 */ 1197 return; 1198 } 1199 1200 set_bit(usage->type, input->evbit); 1201 1202 /* 1203 * This part is *really* controversial: 1204 * - HID aims at being generic so we should do our best to export 1205 * all incoming events 1206 * - HID describes what events are, so there is no reason for ABS_X 1207 * to be mapped to ABS_Y 1208 * - HID is using *_MISC+N as a default value, but nothing prevents 1209 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1210 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1211 * processing) 1212 * 1213 * If devices still want to use this (at their own risk), they will 1214 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1215 * the default should be a reliable mapping. 1216 */ 1217 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1218 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1219 usage->code = find_next_zero_bit(bit, 1220 max + 1, 1221 usage->code); 1222 } else { 1223 device->status |= HID_STAT_DUP_DETECTED; 1224 goto ignore; 1225 } 1226 } 1227 1228 if (usage->code > max) 1229 goto ignore; 1230 1231 if (usage->type == EV_ABS) { 1232 1233 int a = field->logical_minimum; 1234 int b = field->logical_maximum; 1235 1236 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1237 a = field->logical_minimum = 0; 1238 b = field->logical_maximum = 255; 1239 } 1240 1241 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1242 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1243 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1244 1245 input_abs_set_res(input, usage->code, 1246 hidinput_calc_abs_res(field, usage->code)); 1247 1248 /* use a larger default input buffer for MT devices */ 1249 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1250 input_set_events_per_packet(input, 60); 1251 } 1252 1253 if (usage->type == EV_ABS && 1254 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1255 int i; 1256 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1257 input_set_abs_params(input, i, -1, 1, 0, 0); 1258 set_bit(i, input->absbit); 1259 } 1260 if (usage->hat_dir && !field->dpad) 1261 field->dpad = usage->code; 1262 } 1263 1264 /* for those devices which produce Consumer volume usage as relative, 1265 * we emulate pressing volumeup/volumedown appropriate number of times 1266 * in hidinput_hid_event() 1267 */ 1268 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1269 (usage->code == ABS_VOLUME)) { 1270 set_bit(KEY_VOLUMEUP, input->keybit); 1271 set_bit(KEY_VOLUMEDOWN, input->keybit); 1272 } 1273 1274 if (usage->type == EV_KEY) { 1275 set_bit(EV_MSC, input->evbit); 1276 set_bit(MSC_SCAN, input->mscbit); 1277 } 1278 1279 return; 1280 1281 ignore: 1282 usage->type = 0; 1283 usage->code = 0; 1284 } 1285 1286 static void hidinput_handle_scroll(struct hid_usage *usage, 1287 struct input_dev *input, 1288 __s32 value) 1289 { 1290 int code; 1291 int hi_res, lo_res; 1292 1293 if (value == 0) 1294 return; 1295 1296 if (usage->code == REL_WHEEL_HI_RES) 1297 code = REL_WHEEL; 1298 else 1299 code = REL_HWHEEL; 1300 1301 /* 1302 * Windows reports one wheel click as value 120. Where a high-res 1303 * scroll wheel is present, a fraction of 120 is reported instead. 1304 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1305 * adhere to the 120 expectation. 1306 */ 1307 hi_res = value * 120/usage->resolution_multiplier; 1308 1309 usage->wheel_accumulated += hi_res; 1310 lo_res = usage->wheel_accumulated/120; 1311 if (lo_res) 1312 usage->wheel_accumulated -= lo_res * 120; 1313 1314 input_event(input, EV_REL, code, lo_res); 1315 input_event(input, EV_REL, usage->code, hi_res); 1316 } 1317 1318 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1319 { 1320 struct input_dev *input; 1321 unsigned *quirks = &hid->quirks; 1322 1323 if (!usage->type) 1324 return; 1325 1326 if (usage->type == EV_PWR) { 1327 hidinput_update_battery(hid, value); 1328 return; 1329 } 1330 1331 if (!field->hidinput) 1332 return; 1333 1334 input = field->hidinput->input; 1335 1336 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1337 int hat_dir = usage->hat_dir; 1338 if (!hat_dir) 1339 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1340 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1341 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1342 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1343 return; 1344 } 1345 1346 if (usage->hid == HID_DG_INVERT) { 1347 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1348 return; 1349 } 1350 1351 if (usage->hid == HID_DG_INRANGE) { 1352 if (value) { 1353 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1354 return; 1355 } 1356 input_event(input, usage->type, usage->code, 0); 1357 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1358 return; 1359 } 1360 1361 if (usage->hid == HID_DG_TIPPRESSURE && (*quirks & HID_QUIRK_NOTOUCH)) { 1362 int a = field->logical_minimum; 1363 int b = field->logical_maximum; 1364 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1365 } 1366 1367 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1368 dbg_hid("Maximum Effects - %d\n",value); 1369 return; 1370 } 1371 1372 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1373 dbg_hid("PID Pool Report\n"); 1374 return; 1375 } 1376 1377 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1378 return; 1379 1380 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1381 usage->code == REL_HWHEEL_HI_RES)) { 1382 hidinput_handle_scroll(usage, input, value); 1383 return; 1384 } 1385 1386 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1387 (usage->code == ABS_VOLUME)) { 1388 int count = abs(value); 1389 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1390 int i; 1391 1392 for (i = 0; i < count; i++) { 1393 input_event(input, EV_KEY, direction, 1); 1394 input_sync(input); 1395 input_event(input, EV_KEY, direction, 0); 1396 input_sync(input); 1397 } 1398 return; 1399 } 1400 1401 /* 1402 * Ignore out-of-range values as per HID specification, 1403 * section 5.10 and 6.2.25, when NULL state bit is present. 1404 * When it's not, clamp the value to match Microsoft's input 1405 * driver as mentioned in "Required HID usages for digitizers": 1406 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1407 * 1408 * The logical_minimum < logical_maximum check is done so that we 1409 * don't unintentionally discard values sent by devices which 1410 * don't specify logical min and max. 1411 */ 1412 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1413 (field->logical_minimum < field->logical_maximum)) { 1414 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1415 (value < field->logical_minimum || 1416 value > field->logical_maximum)) { 1417 dbg_hid("Ignoring out-of-range value %x\n", value); 1418 return; 1419 } 1420 value = clamp(value, 1421 field->logical_minimum, 1422 field->logical_maximum); 1423 } 1424 1425 /* 1426 * Ignore reports for absolute data if the data didn't change. This is 1427 * not only an optimization but also fixes 'dead' key reports. Some 1428 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1429 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1430 * can only have one of them physically available. The 'dead' keys 1431 * report constant 0. As all map to the same keycode, they'd confuse 1432 * the input layer. If we filter the 'dead' keys on the HID level, we 1433 * skip the keycode translation and only forward real events. 1434 */ 1435 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1436 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1437 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1438 usage->usage_index < field->maxusage && 1439 value == field->value[usage->usage_index]) 1440 return; 1441 1442 /* report the usage code as scancode if the key status has changed */ 1443 if (usage->type == EV_KEY && 1444 (!test_bit(usage->code, input->key)) == value) 1445 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1446 1447 input_event(input, usage->type, usage->code, value); 1448 1449 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1450 usage->type == EV_KEY && value) { 1451 input_sync(input); 1452 input_event(input, usage->type, usage->code, 0); 1453 } 1454 } 1455 1456 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1457 { 1458 struct hid_input *hidinput; 1459 1460 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1461 return; 1462 1463 list_for_each_entry(hidinput, &hid->inputs, list) 1464 input_sync(hidinput->input); 1465 } 1466 EXPORT_SYMBOL_GPL(hidinput_report_event); 1467 1468 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1469 { 1470 struct hid_report *report; 1471 int i, j; 1472 1473 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1474 for (i = 0; i < report->maxfield; i++) { 1475 *field = report->field[i]; 1476 for (j = 0; j < (*field)->maxusage; j++) 1477 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1478 return j; 1479 } 1480 } 1481 return -1; 1482 } 1483 EXPORT_SYMBOL_GPL(hidinput_find_field); 1484 1485 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1486 { 1487 struct hid_report *report; 1488 struct hid_field *field; 1489 int i, j; 1490 1491 list_for_each_entry(report, 1492 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1493 list) { 1494 for (i = 0; i < report->maxfield; i++) { 1495 field = report->field[i]; 1496 for (j = 0; j < field->maxusage; j++) 1497 if (field->usage[j].type == EV_LED) 1498 return field; 1499 } 1500 } 1501 return NULL; 1502 } 1503 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1504 1505 unsigned int hidinput_count_leds(struct hid_device *hid) 1506 { 1507 struct hid_report *report; 1508 struct hid_field *field; 1509 int i, j; 1510 unsigned int count = 0; 1511 1512 list_for_each_entry(report, 1513 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1514 list) { 1515 for (i = 0; i < report->maxfield; i++) { 1516 field = report->field[i]; 1517 for (j = 0; j < field->maxusage; j++) 1518 if (field->usage[j].type == EV_LED && 1519 field->value[j]) 1520 count += 1; 1521 } 1522 } 1523 return count; 1524 } 1525 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1526 1527 static void hidinput_led_worker(struct work_struct *work) 1528 { 1529 struct hid_device *hid = container_of(work, struct hid_device, 1530 led_work); 1531 struct hid_field *field; 1532 struct hid_report *report; 1533 int ret; 1534 u32 len; 1535 __u8 *buf; 1536 1537 field = hidinput_get_led_field(hid); 1538 if (!field) 1539 return; 1540 1541 /* 1542 * field->report is accessed unlocked regarding HID core. So there might 1543 * be another incoming SET-LED request from user-space, which changes 1544 * the LED state while we assemble our outgoing buffer. However, this 1545 * doesn't matter as hid_output_report() correctly converts it into a 1546 * boolean value no matter what information is currently set on the LED 1547 * field (even garbage). So the remote device will always get a valid 1548 * request. 1549 * And in case we send a wrong value, a next led worker is spawned 1550 * for every SET-LED request so the following worker will send the 1551 * correct value, guaranteed! 1552 */ 1553 1554 report = field->report; 1555 1556 /* use custom SET_REPORT request if possible (asynchronous) */ 1557 if (hid->ll_driver->request) 1558 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1559 1560 /* fall back to generic raw-output-report */ 1561 len = hid_report_len(report); 1562 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1563 if (!buf) 1564 return; 1565 1566 hid_output_report(report, buf); 1567 /* synchronous output report */ 1568 ret = hid_hw_output_report(hid, buf, len); 1569 if (ret == -ENOSYS) 1570 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1571 HID_REQ_SET_REPORT); 1572 kfree(buf); 1573 } 1574 1575 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1576 unsigned int code, int value) 1577 { 1578 struct hid_device *hid = input_get_drvdata(dev); 1579 struct hid_field *field; 1580 int offset; 1581 1582 if (type == EV_FF) 1583 return input_ff_event(dev, type, code, value); 1584 1585 if (type != EV_LED) 1586 return -1; 1587 1588 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1589 hid_warn(dev, "event field not found\n"); 1590 return -1; 1591 } 1592 1593 hid_set_field(field, offset, value); 1594 1595 schedule_work(&hid->led_work); 1596 return 0; 1597 } 1598 1599 static int hidinput_open(struct input_dev *dev) 1600 { 1601 struct hid_device *hid = input_get_drvdata(dev); 1602 1603 return hid_hw_open(hid); 1604 } 1605 1606 static void hidinput_close(struct input_dev *dev) 1607 { 1608 struct hid_device *hid = input_get_drvdata(dev); 1609 1610 hid_hw_close(hid); 1611 } 1612 1613 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1614 struct hid_report *report, bool use_logical_max) 1615 { 1616 struct hid_usage *usage; 1617 bool update_needed = false; 1618 bool get_report_completed = false; 1619 int i, j; 1620 1621 if (report->maxfield == 0) 1622 return false; 1623 1624 for (i = 0; i < report->maxfield; i++) { 1625 __s32 value = use_logical_max ? 1626 report->field[i]->logical_maximum : 1627 report->field[i]->logical_minimum; 1628 1629 /* There is no good reason for a Resolution 1630 * Multiplier to have a count other than 1. 1631 * Ignore that case. 1632 */ 1633 if (report->field[i]->report_count != 1) 1634 continue; 1635 1636 for (j = 0; j < report->field[i]->maxusage; j++) { 1637 usage = &report->field[i]->usage[j]; 1638 1639 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1640 continue; 1641 1642 /* 1643 * If we have more than one feature within this 1644 * report we need to fill in the bits from the 1645 * others before we can overwrite the ones for the 1646 * Resolution Multiplier. 1647 * 1648 * But if we're not allowed to read from the device, 1649 * we just bail. Such a device should not exist 1650 * anyway. 1651 */ 1652 if (!get_report_completed && report->maxfield > 1) { 1653 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) 1654 return update_needed; 1655 1656 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1657 hid_hw_wait(hid); 1658 get_report_completed = true; 1659 } 1660 1661 report->field[i]->value[j] = value; 1662 update_needed = true; 1663 } 1664 } 1665 1666 return update_needed; 1667 } 1668 1669 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1670 { 1671 struct hid_report_enum *rep_enum; 1672 struct hid_report *rep; 1673 int ret; 1674 1675 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1676 list_for_each_entry(rep, &rep_enum->report_list, list) { 1677 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1678 rep, true); 1679 1680 if (update_needed) { 1681 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1682 if (ret) { 1683 __hidinput_change_resolution_multipliers(hid, 1684 rep, false); 1685 return; 1686 } 1687 } 1688 } 1689 1690 /* refresh our structs */ 1691 hid_setup_resolution_multiplier(hid); 1692 } 1693 1694 static void report_features(struct hid_device *hid) 1695 { 1696 struct hid_driver *drv = hid->driver; 1697 struct hid_report_enum *rep_enum; 1698 struct hid_report *rep; 1699 struct hid_usage *usage; 1700 int i, j; 1701 1702 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1703 list_for_each_entry(rep, &rep_enum->report_list, list) 1704 for (i = 0; i < rep->maxfield; i++) { 1705 /* Ignore if report count is out of bounds. */ 1706 if (rep->field[i]->report_count < 1) 1707 continue; 1708 1709 for (j = 0; j < rep->field[i]->maxusage; j++) { 1710 usage = &rep->field[i]->usage[j]; 1711 1712 /* Verify if Battery Strength feature is available */ 1713 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1714 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1715 rep->field[i], false); 1716 1717 if (drv->feature_mapping) 1718 drv->feature_mapping(hid, rep->field[i], usage); 1719 } 1720 } 1721 } 1722 1723 static struct hid_input *hidinput_allocate(struct hid_device *hid, 1724 unsigned int application) 1725 { 1726 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1727 struct input_dev *input_dev = input_allocate_device(); 1728 const char *suffix = NULL; 1729 size_t suffix_len, name_len; 1730 1731 if (!hidinput || !input_dev) 1732 goto fail; 1733 1734 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1735 hid->maxapplication > 1) { 1736 switch (application) { 1737 case HID_GD_KEYBOARD: 1738 suffix = "Keyboard"; 1739 break; 1740 case HID_GD_KEYPAD: 1741 suffix = "Keypad"; 1742 break; 1743 case HID_GD_MOUSE: 1744 suffix = "Mouse"; 1745 break; 1746 case HID_DG_STYLUS: 1747 suffix = "Pen"; 1748 break; 1749 case HID_DG_TOUCHSCREEN: 1750 suffix = "Touchscreen"; 1751 break; 1752 case HID_DG_TOUCHPAD: 1753 suffix = "Touchpad"; 1754 break; 1755 case HID_GD_SYSTEM_CONTROL: 1756 suffix = "System Control"; 1757 break; 1758 case HID_CP_CONSUMER_CONTROL: 1759 suffix = "Consumer Control"; 1760 break; 1761 case HID_GD_WIRELESS_RADIO_CTLS: 1762 suffix = "Wireless Radio Control"; 1763 break; 1764 case HID_GD_SYSTEM_MULTIAXIS: 1765 suffix = "System Multi Axis"; 1766 break; 1767 default: 1768 break; 1769 } 1770 } 1771 1772 if (suffix) { 1773 name_len = strlen(hid->name); 1774 suffix_len = strlen(suffix); 1775 if ((name_len < suffix_len) || 1776 strcmp(hid->name + name_len - suffix_len, suffix)) { 1777 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1778 hid->name, suffix); 1779 if (!hidinput->name) 1780 goto fail; 1781 } 1782 } 1783 1784 input_set_drvdata(input_dev, hid); 1785 input_dev->event = hidinput_input_event; 1786 input_dev->open = hidinput_open; 1787 input_dev->close = hidinput_close; 1788 input_dev->setkeycode = hidinput_setkeycode; 1789 input_dev->getkeycode = hidinput_getkeycode; 1790 1791 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1792 input_dev->phys = hid->phys; 1793 input_dev->uniq = hid->uniq; 1794 input_dev->id.bustype = hid->bus; 1795 input_dev->id.vendor = hid->vendor; 1796 input_dev->id.product = hid->product; 1797 input_dev->id.version = hid->version; 1798 input_dev->dev.parent = &hid->dev; 1799 1800 hidinput->input = input_dev; 1801 hidinput->application = application; 1802 list_add_tail(&hidinput->list, &hid->inputs); 1803 1804 INIT_LIST_HEAD(&hidinput->reports); 1805 1806 return hidinput; 1807 1808 fail: 1809 kfree(hidinput); 1810 input_free_device(input_dev); 1811 hid_err(hid, "Out of memory during hid input probe\n"); 1812 return NULL; 1813 } 1814 1815 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1816 { 1817 int i; 1818 unsigned long r = 0; 1819 1820 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1821 r |= hidinput->input->evbit[i]; 1822 1823 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1824 r |= hidinput->input->keybit[i]; 1825 1826 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1827 r |= hidinput->input->relbit[i]; 1828 1829 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1830 r |= hidinput->input->absbit[i]; 1831 1832 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1833 r |= hidinput->input->mscbit[i]; 1834 1835 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1836 r |= hidinput->input->ledbit[i]; 1837 1838 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1839 r |= hidinput->input->sndbit[i]; 1840 1841 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1842 r |= hidinput->input->ffbit[i]; 1843 1844 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1845 r |= hidinput->input->swbit[i]; 1846 1847 return !!r; 1848 } 1849 1850 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1851 struct hid_input *hidinput) 1852 { 1853 struct hid_report *report; 1854 int i, k; 1855 1856 list_del(&hidinput->list); 1857 input_free_device(hidinput->input); 1858 kfree(hidinput->name); 1859 1860 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1861 if (k == HID_OUTPUT_REPORT && 1862 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1863 continue; 1864 1865 list_for_each_entry(report, &hid->report_enum[k].report_list, 1866 list) { 1867 1868 for (i = 0; i < report->maxfield; i++) 1869 if (report->field[i]->hidinput == hidinput) 1870 report->field[i]->hidinput = NULL; 1871 } 1872 } 1873 1874 kfree(hidinput); 1875 } 1876 1877 static struct hid_input *hidinput_match(struct hid_report *report) 1878 { 1879 struct hid_device *hid = report->device; 1880 struct hid_input *hidinput; 1881 1882 list_for_each_entry(hidinput, &hid->inputs, list) { 1883 if (hidinput->report && 1884 hidinput->report->id == report->id) 1885 return hidinput; 1886 } 1887 1888 return NULL; 1889 } 1890 1891 static struct hid_input *hidinput_match_application(struct hid_report *report) 1892 { 1893 struct hid_device *hid = report->device; 1894 struct hid_input *hidinput; 1895 1896 list_for_each_entry(hidinput, &hid->inputs, list) { 1897 if (hidinput->application == report->application) 1898 return hidinput; 1899 1900 /* 1901 * Keep SystemControl and ConsumerControl applications together 1902 * with the main keyboard, if present. 1903 */ 1904 if ((report->application == HID_GD_SYSTEM_CONTROL || 1905 report->application == HID_CP_CONSUMER_CONTROL) && 1906 hidinput->application == HID_GD_KEYBOARD) { 1907 return hidinput; 1908 } 1909 } 1910 1911 return NULL; 1912 } 1913 1914 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1915 struct hid_report *report) 1916 { 1917 int i, j; 1918 1919 for (i = 0; i < report->maxfield; i++) 1920 for (j = 0; j < report->field[i]->maxusage; j++) 1921 hidinput_configure_usage(hidinput, report->field[i], 1922 report->field[i]->usage + j); 1923 } 1924 1925 /* 1926 * Register the input device; print a message. 1927 * Configure the input layer interface 1928 * Read all reports and initialize the absolute field values. 1929 */ 1930 1931 int hidinput_connect(struct hid_device *hid, unsigned int force) 1932 { 1933 struct hid_driver *drv = hid->driver; 1934 struct hid_report *report; 1935 struct hid_input *next, *hidinput = NULL; 1936 unsigned int application; 1937 int i, k; 1938 1939 INIT_LIST_HEAD(&hid->inputs); 1940 INIT_WORK(&hid->led_work, hidinput_led_worker); 1941 1942 hid->status &= ~HID_STAT_DUP_DETECTED; 1943 1944 if (!force) { 1945 for (i = 0; i < hid->maxcollection; i++) { 1946 struct hid_collection *col = &hid->collection[i]; 1947 if (col->type == HID_COLLECTION_APPLICATION || 1948 col->type == HID_COLLECTION_PHYSICAL) 1949 if (IS_INPUT_APPLICATION(col->usage)) 1950 break; 1951 } 1952 1953 if (i == hid->maxcollection) 1954 return -1; 1955 } 1956 1957 report_features(hid); 1958 1959 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1960 if (k == HID_OUTPUT_REPORT && 1961 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1962 continue; 1963 1964 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1965 1966 if (!report->maxfield) 1967 continue; 1968 1969 application = report->application; 1970 1971 /* 1972 * Find the previous hidinput report attached 1973 * to this report id. 1974 */ 1975 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1976 hidinput = hidinput_match(report); 1977 else if (hid->maxapplication > 1 && 1978 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1979 hidinput = hidinput_match_application(report); 1980 1981 if (!hidinput) { 1982 hidinput = hidinput_allocate(hid, application); 1983 if (!hidinput) 1984 goto out_unwind; 1985 } 1986 1987 hidinput_configure_usages(hidinput, report); 1988 1989 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1990 hidinput->report = report; 1991 1992 list_add_tail(&report->hidinput_list, 1993 &hidinput->reports); 1994 } 1995 } 1996 1997 hidinput_change_resolution_multipliers(hid); 1998 1999 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 2000 if (drv->input_configured && 2001 drv->input_configured(hid, hidinput)) 2002 goto out_unwind; 2003 2004 if (!hidinput_has_been_populated(hidinput)) { 2005 /* no need to register an input device not populated */ 2006 hidinput_cleanup_hidinput(hid, hidinput); 2007 continue; 2008 } 2009 2010 if (input_register_device(hidinput->input)) 2011 goto out_unwind; 2012 hidinput->registered = true; 2013 } 2014 2015 if (list_empty(&hid->inputs)) { 2016 hid_err(hid, "No inputs registered, leaving\n"); 2017 goto out_unwind; 2018 } 2019 2020 if (hid->status & HID_STAT_DUP_DETECTED) 2021 hid_dbg(hid, 2022 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 2023 2024 return 0; 2025 2026 out_unwind: 2027 /* unwind the ones we already registered */ 2028 hidinput_disconnect(hid); 2029 2030 return -1; 2031 } 2032 EXPORT_SYMBOL_GPL(hidinput_connect); 2033 2034 void hidinput_disconnect(struct hid_device *hid) 2035 { 2036 struct hid_input *hidinput, *next; 2037 2038 hidinput_cleanup_battery(hid); 2039 2040 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 2041 list_del(&hidinput->list); 2042 if (hidinput->registered) 2043 input_unregister_device(hidinput->input); 2044 else 2045 input_free_device(hidinput->input); 2046 kfree(hidinput->name); 2047 kfree(hidinput); 2048 } 2049 2050 /* led_work is spawned by input_dev callbacks, but doesn't access the 2051 * parent input_dev at all. Once all input devices are removed, we 2052 * know that led_work will never get restarted, so we can cancel it 2053 * synchronously and are safe. */ 2054 cancel_work_sync(&hid->led_work); 2055 } 2056 EXPORT_SYMBOL_GPL(hidinput_disconnect); 2057