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_SPECTRE_X360_15), 334 HID_BATTERY_QUIRK_IGNORE }, 335 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN), 336 HID_BATTERY_QUIRK_IGNORE }, 337 {} 338 }; 339 340 static unsigned find_battery_quirk(struct hid_device *hdev) 341 { 342 unsigned quirks = 0; 343 const struct hid_device_id *match; 344 345 match = hid_match_id(hdev, hid_battery_quirks); 346 if (match != NULL) 347 quirks = match->driver_data; 348 349 return quirks; 350 } 351 352 static int hidinput_scale_battery_capacity(struct hid_device *dev, 353 int value) 354 { 355 if (dev->battery_min < dev->battery_max && 356 value >= dev->battery_min && value <= dev->battery_max) 357 value = ((value - dev->battery_min) * 100) / 358 (dev->battery_max - dev->battery_min); 359 360 return value; 361 } 362 363 static int hidinput_query_battery_capacity(struct hid_device *dev) 364 { 365 u8 *buf; 366 int ret; 367 368 buf = kmalloc(4, GFP_KERNEL); 369 if (!buf) 370 return -ENOMEM; 371 372 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4, 373 dev->battery_report_type, HID_REQ_GET_REPORT); 374 if (ret < 2) { 375 kfree(buf); 376 return -ENODATA; 377 } 378 379 ret = hidinput_scale_battery_capacity(dev, buf[1]); 380 kfree(buf); 381 return ret; 382 } 383 384 static int hidinput_get_battery_property(struct power_supply *psy, 385 enum power_supply_property prop, 386 union power_supply_propval *val) 387 { 388 struct hid_device *dev = power_supply_get_drvdata(psy); 389 int value; 390 int ret = 0; 391 392 switch (prop) { 393 case POWER_SUPPLY_PROP_PRESENT: 394 case POWER_SUPPLY_PROP_ONLINE: 395 val->intval = 1; 396 break; 397 398 case POWER_SUPPLY_PROP_CAPACITY: 399 if (dev->battery_status != HID_BATTERY_REPORTED && 400 !dev->battery_avoid_query) { 401 value = hidinput_query_battery_capacity(dev); 402 if (value < 0) 403 return value; 404 } else { 405 value = dev->battery_capacity; 406 } 407 408 val->intval = value; 409 break; 410 411 case POWER_SUPPLY_PROP_MODEL_NAME: 412 val->strval = dev->name; 413 break; 414 415 case POWER_SUPPLY_PROP_STATUS: 416 if (dev->battery_status != HID_BATTERY_REPORTED && 417 !dev->battery_avoid_query) { 418 value = hidinput_query_battery_capacity(dev); 419 if (value < 0) 420 return value; 421 422 dev->battery_capacity = value; 423 dev->battery_status = HID_BATTERY_QUERIED; 424 } 425 426 if (dev->battery_status == HID_BATTERY_UNKNOWN) 427 val->intval = POWER_SUPPLY_STATUS_UNKNOWN; 428 else 429 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 430 break; 431 432 case POWER_SUPPLY_PROP_SCOPE: 433 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 434 break; 435 436 default: 437 ret = -EINVAL; 438 break; 439 } 440 441 return ret; 442 } 443 444 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 445 struct hid_field *field, bool is_percentage) 446 { 447 struct power_supply_desc *psy_desc; 448 struct power_supply_config psy_cfg = { .drv_data = dev, }; 449 unsigned quirks; 450 s32 min, max; 451 int error; 452 453 if (dev->battery) 454 return 0; /* already initialized? */ 455 456 quirks = find_battery_quirk(dev); 457 458 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 459 dev->bus, dev->vendor, dev->product, dev->version, quirks); 460 461 if (quirks & HID_BATTERY_QUIRK_IGNORE) 462 return 0; 463 464 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); 465 if (!psy_desc) 466 return -ENOMEM; 467 468 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", 469 strlen(dev->uniq) ? 470 dev->uniq : dev_name(&dev->dev)); 471 if (!psy_desc->name) { 472 error = -ENOMEM; 473 goto err_free_mem; 474 } 475 476 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 477 psy_desc->properties = hidinput_battery_props; 478 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); 479 psy_desc->use_for_apm = 0; 480 psy_desc->get_property = hidinput_get_battery_property; 481 482 min = field->logical_minimum; 483 max = field->logical_maximum; 484 485 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) { 486 min = 0; 487 max = 100; 488 } 489 490 if (quirks & HID_BATTERY_QUIRK_FEATURE) 491 report_type = HID_FEATURE_REPORT; 492 493 dev->battery_min = min; 494 dev->battery_max = max; 495 dev->battery_report_type = report_type; 496 dev->battery_report_id = field->report->id; 497 498 /* 499 * Stylus is normally not connected to the device and thus we 500 * can't query the device and get meaningful battery strength. 501 * We have to wait for the device to report it on its own. 502 */ 503 dev->battery_avoid_query = report_type == HID_INPUT_REPORT && 504 field->physical == HID_DG_STYLUS; 505 506 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); 507 if (IS_ERR(dev->battery)) { 508 error = PTR_ERR(dev->battery); 509 hid_warn(dev, "can't register power supply: %d\n", error); 510 goto err_free_name; 511 } 512 513 power_supply_powers(dev->battery, &dev->dev); 514 return 0; 515 516 err_free_name: 517 kfree(psy_desc->name); 518 err_free_mem: 519 kfree(psy_desc); 520 dev->battery = NULL; 521 return error; 522 } 523 524 static void hidinput_cleanup_battery(struct hid_device *dev) 525 { 526 const struct power_supply_desc *psy_desc; 527 528 if (!dev->battery) 529 return; 530 531 psy_desc = dev->battery->desc; 532 power_supply_unregister(dev->battery); 533 kfree(psy_desc->name); 534 kfree(psy_desc); 535 dev->battery = NULL; 536 } 537 538 static void hidinput_update_battery(struct hid_device *dev, int value) 539 { 540 int capacity; 541 542 if (!dev->battery) 543 return; 544 545 if (value == 0 || value < dev->battery_min || value > dev->battery_max) 546 return; 547 548 capacity = hidinput_scale_battery_capacity(dev, value); 549 550 if (dev->battery_status != HID_BATTERY_REPORTED || 551 capacity != dev->battery_capacity || 552 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) { 553 dev->battery_capacity = capacity; 554 dev->battery_status = HID_BATTERY_REPORTED; 555 dev->battery_ratelimit_time = 556 ktime_add_ms(ktime_get_coarse(), 30 * 1000); 557 power_supply_changed(dev->battery); 558 } 559 } 560 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 561 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 562 struct hid_field *field, bool is_percentage) 563 { 564 return 0; 565 } 566 567 static void hidinput_cleanup_battery(struct hid_device *dev) 568 { 569 } 570 571 static void hidinput_update_battery(struct hid_device *dev, int value) 572 { 573 } 574 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 575 576 static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field, 577 unsigned int type, unsigned int usage) 578 { 579 struct hid_collection *collection; 580 581 collection = &device->collection[field->usage->collection_index]; 582 583 return collection->type == type && collection->usage == usage; 584 } 585 586 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 587 struct hid_usage *usage) 588 { 589 struct input_dev *input = hidinput->input; 590 struct hid_device *device = input_get_drvdata(input); 591 int max = 0, code; 592 unsigned long *bit = NULL; 593 594 field->hidinput = hidinput; 595 596 if (field->flags & HID_MAIN_ITEM_CONSTANT) 597 goto ignore; 598 599 /* Ignore if report count is out of bounds. */ 600 if (field->report_count < 1) 601 goto ignore; 602 603 /* only LED usages are supported in output fields */ 604 if (field->report_type == HID_OUTPUT_REPORT && 605 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 606 goto ignore; 607 } 608 609 if (device->driver->input_mapping) { 610 int ret = device->driver->input_mapping(device, hidinput, field, 611 usage, &bit, &max); 612 if (ret > 0) 613 goto mapped; 614 if (ret < 0) 615 goto ignore; 616 } 617 618 switch (usage->hid & HID_USAGE_PAGE) { 619 case HID_UP_UNDEFINED: 620 goto ignore; 621 622 case HID_UP_KEYBOARD: 623 set_bit(EV_REP, input->evbit); 624 625 if ((usage->hid & HID_USAGE) < 256) { 626 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 627 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 628 } else 629 map_key(KEY_UNKNOWN); 630 631 break; 632 633 case HID_UP_BUTTON: 634 code = ((usage->hid - 1) & HID_USAGE); 635 636 switch (field->application) { 637 case HID_GD_MOUSE: 638 case HID_GD_POINTER: code += BTN_MOUSE; break; 639 case HID_GD_JOYSTICK: 640 if (code <= 0xf) 641 code += BTN_JOYSTICK; 642 else 643 code += BTN_TRIGGER_HAPPY - 0x10; 644 break; 645 case HID_GD_GAMEPAD: 646 if (code <= 0xf) 647 code += BTN_GAMEPAD; 648 else 649 code += BTN_TRIGGER_HAPPY - 0x10; 650 break; 651 case HID_CP_CONSUMER_CONTROL: 652 if (hidinput_field_in_collection(device, field, 653 HID_COLLECTION_NAMED_ARRAY, 654 HID_CP_PROGRAMMABLEBUTTONS)) { 655 if (code <= 0x1d) 656 code += KEY_MACRO1; 657 else 658 code += BTN_TRIGGER_HAPPY - 0x1e; 659 break; 660 } 661 fallthrough; 662 default: 663 switch (field->physical) { 664 case HID_GD_MOUSE: 665 case HID_GD_POINTER: code += BTN_MOUSE; break; 666 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 667 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 668 default: code += BTN_MISC; 669 } 670 } 671 672 map_key(code); 673 break; 674 675 case HID_UP_SIMULATION: 676 switch (usage->hid & 0xffff) { 677 case 0xba: map_abs(ABS_RUDDER); break; 678 case 0xbb: map_abs(ABS_THROTTLE); break; 679 case 0xc4: map_abs(ABS_GAS); break; 680 case 0xc5: map_abs(ABS_BRAKE); break; 681 case 0xc8: map_abs(ABS_WHEEL); break; 682 default: goto ignore; 683 } 684 break; 685 686 case HID_UP_GENDESK: 687 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 688 switch (usage->hid & 0xf) { 689 case 0x1: map_key_clear(KEY_POWER); break; 690 case 0x2: map_key_clear(KEY_SLEEP); break; 691 case 0x3: map_key_clear(KEY_WAKEUP); break; 692 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 693 case 0x5: map_key_clear(KEY_MENU); break; 694 case 0x6: map_key_clear(KEY_PROG1); break; 695 case 0x7: map_key_clear(KEY_HELP); break; 696 case 0x8: map_key_clear(KEY_EXIT); break; 697 case 0x9: map_key_clear(KEY_SELECT); break; 698 case 0xa: map_key_clear(KEY_RIGHT); break; 699 case 0xb: map_key_clear(KEY_LEFT); break; 700 case 0xc: map_key_clear(KEY_UP); break; 701 case 0xd: map_key_clear(KEY_DOWN); break; 702 case 0xe: map_key_clear(KEY_POWER2); break; 703 case 0xf: map_key_clear(KEY_RESTART); break; 704 default: goto unknown; 705 } 706 break; 707 } 708 709 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */ 710 switch (usage->hid & 0xf) { 711 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break; 712 default: goto ignore; 713 } 714 break; 715 } 716 717 /* 718 * Some lazy vendors declare 255 usages for System Control, 719 * leading to the creation of ABS_X|Y axis and too many others. 720 * It wouldn't be a problem if joydev doesn't consider the 721 * device as a joystick then. 722 */ 723 if (field->application == HID_GD_SYSTEM_CONTROL) 724 goto ignore; 725 726 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 727 switch (usage->hid) { 728 case HID_GD_UP: usage->hat_dir = 1; break; 729 case HID_GD_DOWN: usage->hat_dir = 5; break; 730 case HID_GD_RIGHT: usage->hat_dir = 3; break; 731 case HID_GD_LEFT: usage->hat_dir = 7; break; 732 default: goto unknown; 733 } 734 if (field->dpad) { 735 map_abs(field->dpad); 736 goto ignore; 737 } 738 map_abs(ABS_HAT0X); 739 break; 740 } 741 742 switch (usage->hid) { 743 /* These usage IDs map directly to the usage codes. */ 744 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 745 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 746 if (field->flags & HID_MAIN_ITEM_RELATIVE) 747 map_rel(usage->hid & 0xf); 748 else 749 map_abs_clear(usage->hid & 0xf); 750 break; 751 752 case HID_GD_WHEEL: 753 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 754 set_bit(REL_WHEEL, input->relbit); 755 map_rel(REL_WHEEL_HI_RES); 756 } else { 757 map_abs(usage->hid & 0xf); 758 } 759 break; 760 case HID_GD_SLIDER: case HID_GD_DIAL: 761 if (field->flags & HID_MAIN_ITEM_RELATIVE) 762 map_rel(usage->hid & 0xf); 763 else 764 map_abs(usage->hid & 0xf); 765 break; 766 767 case HID_GD_HATSWITCH: 768 usage->hat_min = field->logical_minimum; 769 usage->hat_max = field->logical_maximum; 770 map_abs(ABS_HAT0X); 771 break; 772 773 case HID_GD_START: map_key_clear(BTN_START); break; 774 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 775 776 case HID_GD_RFKILL_BTN: 777 /* MS wireless radio ctl extension, also check CA */ 778 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 779 map_key_clear(KEY_RFKILL); 780 /* We need to simulate the btn release */ 781 field->flags |= HID_MAIN_ITEM_RELATIVE; 782 break; 783 } 784 goto unknown; 785 786 default: goto unknown; 787 } 788 789 break; 790 791 case HID_UP_LED: 792 switch (usage->hid & 0xffff) { /* HID-Value: */ 793 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 794 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 795 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 796 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 797 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 798 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 799 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 800 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 801 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 802 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 803 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 804 805 default: goto ignore; 806 } 807 break; 808 809 case HID_UP_DIGITIZER: 810 if ((field->application & 0xff) == 0x01) /* Digitizer */ 811 __set_bit(INPUT_PROP_POINTER, input->propbit); 812 else if ((field->application & 0xff) == 0x02) /* Pen */ 813 __set_bit(INPUT_PROP_DIRECT, input->propbit); 814 815 switch (usage->hid & 0xff) { 816 case 0x00: /* Undefined */ 817 goto ignore; 818 819 case 0x30: /* TipPressure */ 820 if (!test_bit(BTN_TOUCH, input->keybit)) { 821 device->quirks |= HID_QUIRK_NOTOUCH; 822 set_bit(EV_KEY, input->evbit); 823 set_bit(BTN_TOUCH, input->keybit); 824 } 825 map_abs_clear(ABS_PRESSURE); 826 break; 827 828 case 0x32: /* InRange */ 829 switch (field->physical & 0xff) { 830 case 0x21: map_key(BTN_TOOL_MOUSE); break; 831 case 0x22: map_key(BTN_TOOL_FINGER); break; 832 default: map_key(BTN_TOOL_PEN); break; 833 } 834 break; 835 836 case 0x3b: /* Battery Strength */ 837 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false); 838 usage->type = EV_PWR; 839 return; 840 841 case 0x3c: /* Invert */ 842 map_key_clear(BTN_TOOL_RUBBER); 843 break; 844 845 case 0x3d: /* X Tilt */ 846 map_abs_clear(ABS_TILT_X); 847 break; 848 849 case 0x3e: /* Y Tilt */ 850 map_abs_clear(ABS_TILT_Y); 851 break; 852 853 case 0x33: /* Touch */ 854 case 0x42: /* TipSwitch */ 855 case 0x43: /* TipSwitch2 */ 856 device->quirks &= ~HID_QUIRK_NOTOUCH; 857 map_key_clear(BTN_TOUCH); 858 break; 859 860 case 0x44: /* BarrelSwitch */ 861 map_key_clear(BTN_STYLUS); 862 break; 863 864 case 0x45: /* ERASER */ 865 /* 866 * This event is reported when eraser tip touches the surface. 867 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when 868 * tool gets in proximity. 869 */ 870 map_key_clear(BTN_TOUCH); 871 break; 872 873 case 0x46: /* TabletPick */ 874 case 0x5a: /* SecondaryBarrelSwitch */ 875 map_key_clear(BTN_STYLUS2); 876 break; 877 878 case 0x5b: /* TransducerSerialNumber */ 879 case 0x6e: /* TransducerSerialNumber2 */ 880 map_msc(MSC_SERIAL); 881 break; 882 883 default: goto unknown; 884 } 885 break; 886 887 case HID_UP_TELEPHONY: 888 switch (usage->hid & HID_USAGE) { 889 case 0x2f: map_key_clear(KEY_MICMUTE); break; 890 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 891 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 892 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 893 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 894 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 895 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 896 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 897 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 898 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 899 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 900 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 901 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 902 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 903 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 904 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 905 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 906 default: goto ignore; 907 } 908 break; 909 910 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 911 switch (usage->hid & HID_USAGE) { 912 case 0x000: goto ignore; 913 case 0x030: map_key_clear(KEY_POWER); break; 914 case 0x031: map_key_clear(KEY_RESTART); break; 915 case 0x032: map_key_clear(KEY_SLEEP); break; 916 case 0x034: map_key_clear(KEY_SLEEP); break; 917 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 918 case 0x036: map_key_clear(BTN_MISC); break; 919 920 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 921 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 922 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 923 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 924 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 925 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 926 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 927 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 928 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 929 930 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 931 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 932 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 933 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 934 case 0x069: map_key_clear(KEY_RED); break; 935 case 0x06a: map_key_clear(KEY_GREEN); break; 936 case 0x06b: map_key_clear(KEY_BLUE); break; 937 case 0x06c: map_key_clear(KEY_YELLOW); break; 938 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break; 939 940 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 941 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 942 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 943 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 944 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 945 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 946 947 case 0x079: map_key_clear(KEY_KBDILLUMUP); break; 948 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break; 949 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break; 950 951 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 952 case 0x083: map_key_clear(KEY_LAST); break; 953 case 0x084: map_key_clear(KEY_ENTER); break; 954 case 0x088: map_key_clear(KEY_PC); break; 955 case 0x089: map_key_clear(KEY_TV); break; 956 case 0x08a: map_key_clear(KEY_WWW); break; 957 case 0x08b: map_key_clear(KEY_DVD); break; 958 case 0x08c: map_key_clear(KEY_PHONE); break; 959 case 0x08d: map_key_clear(KEY_PROGRAM); break; 960 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 961 case 0x08f: map_key_clear(KEY_GAMES); break; 962 case 0x090: map_key_clear(KEY_MEMO); break; 963 case 0x091: map_key_clear(KEY_CD); break; 964 case 0x092: map_key_clear(KEY_VCR); break; 965 case 0x093: map_key_clear(KEY_TUNER); break; 966 case 0x094: map_key_clear(KEY_EXIT); break; 967 case 0x095: map_key_clear(KEY_HELP); break; 968 case 0x096: map_key_clear(KEY_TAPE); break; 969 case 0x097: map_key_clear(KEY_TV2); break; 970 case 0x098: map_key_clear(KEY_SAT); break; 971 case 0x09a: map_key_clear(KEY_PVR); break; 972 973 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 974 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 975 case 0x0a0: map_key_clear(KEY_VCR2); break; 976 977 case 0x0b0: map_key_clear(KEY_PLAY); break; 978 case 0x0b1: map_key_clear(KEY_PAUSE); break; 979 case 0x0b2: map_key_clear(KEY_RECORD); break; 980 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 981 case 0x0b4: map_key_clear(KEY_REWIND); break; 982 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 983 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 984 case 0x0b7: map_key_clear(KEY_STOPCD); break; 985 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 986 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 987 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 988 case 0x0bf: map_key_clear(KEY_SLOW); break; 989 990 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 991 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 992 993 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break; 994 995 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 996 case 0x0e2: map_key_clear(KEY_MUTE); break; 997 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 998 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 999 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 1000 case 0x0f5: map_key_clear(KEY_SLOW); break; 1001 1002 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 1003 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 1004 case 0x183: map_key_clear(KEY_CONFIG); break; 1005 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 1006 case 0x185: map_key_clear(KEY_EDITOR); break; 1007 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 1008 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 1009 case 0x188: map_key_clear(KEY_PRESENTATION); break; 1010 case 0x189: map_key_clear(KEY_DATABASE); break; 1011 case 0x18a: map_key_clear(KEY_MAIL); break; 1012 case 0x18b: map_key_clear(KEY_NEWS); break; 1013 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 1014 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 1015 case 0x18e: map_key_clear(KEY_CALENDAR); break; 1016 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 1017 case 0x190: map_key_clear(KEY_JOURNAL); break; 1018 case 0x191: map_key_clear(KEY_FINANCE); break; 1019 case 0x192: map_key_clear(KEY_CALC); break; 1020 case 0x193: map_key_clear(KEY_PLAYER); break; 1021 case 0x194: map_key_clear(KEY_FILE); break; 1022 case 0x196: map_key_clear(KEY_WWW); break; 1023 case 0x199: map_key_clear(KEY_CHAT); break; 1024 case 0x19c: map_key_clear(KEY_LOGOFF); break; 1025 case 0x19e: map_key_clear(KEY_COFFEE); break; 1026 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 1027 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 1028 case 0x1a3: map_key_clear(KEY_NEXT); break; 1029 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 1030 case 0x1a6: map_key_clear(KEY_HELP); break; 1031 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 1032 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 1033 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 1034 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 1035 case 0x1b4: map_key_clear(KEY_FILE); break; 1036 case 0x1b6: map_key_clear(KEY_IMAGES); break; 1037 case 0x1b7: map_key_clear(KEY_AUDIO); break; 1038 case 0x1b8: map_key_clear(KEY_VIDEO); break; 1039 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1040 case 0x1bd: map_key_clear(KEY_INFO); break; 1041 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1042 case 0x201: map_key_clear(KEY_NEW); break; 1043 case 0x202: map_key_clear(KEY_OPEN); break; 1044 case 0x203: map_key_clear(KEY_CLOSE); break; 1045 case 0x204: map_key_clear(KEY_EXIT); break; 1046 case 0x207: map_key_clear(KEY_SAVE); break; 1047 case 0x208: map_key_clear(KEY_PRINT); break; 1048 case 0x209: map_key_clear(KEY_PROPS); break; 1049 case 0x21a: map_key_clear(KEY_UNDO); break; 1050 case 0x21b: map_key_clear(KEY_COPY); break; 1051 case 0x21c: map_key_clear(KEY_CUT); break; 1052 case 0x21d: map_key_clear(KEY_PASTE); break; 1053 case 0x21f: map_key_clear(KEY_FIND); break; 1054 case 0x221: map_key_clear(KEY_SEARCH); break; 1055 case 0x222: map_key_clear(KEY_GOTO); break; 1056 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1057 case 0x224: map_key_clear(KEY_BACK); break; 1058 case 0x225: map_key_clear(KEY_FORWARD); break; 1059 case 0x226: map_key_clear(KEY_STOP); break; 1060 case 0x227: map_key_clear(KEY_REFRESH); break; 1061 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1062 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1063 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1064 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1065 case 0x232: map_key_clear(KEY_FULL_SCREEN); break; 1066 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1067 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1068 case 0x238: /* AC Pan */ 1069 set_bit(REL_HWHEEL, input->relbit); 1070 map_rel(REL_HWHEEL_HI_RES); 1071 break; 1072 case 0x23d: map_key_clear(KEY_EDIT); break; 1073 case 0x25f: map_key_clear(KEY_CANCEL); break; 1074 case 0x269: map_key_clear(KEY_INSERT); break; 1075 case 0x26a: map_key_clear(KEY_DELETE); break; 1076 case 0x279: map_key_clear(KEY_REDO); break; 1077 1078 case 0x289: map_key_clear(KEY_REPLY); break; 1079 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1080 case 0x28c: map_key_clear(KEY_SEND); break; 1081 1082 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break; 1083 1084 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1085 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1086 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1087 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1088 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1089 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1090 1091 case 0x29f: map_key_clear(KEY_SCALE); break; 1092 1093 default: map_key_clear(KEY_UNKNOWN); 1094 } 1095 break; 1096 1097 case HID_UP_GENDEVCTRLS: 1098 switch (usage->hid) { 1099 case HID_DC_BATTERYSTRENGTH: 1100 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false); 1101 usage->type = EV_PWR; 1102 return; 1103 } 1104 goto unknown; 1105 1106 case HID_UP_BATTERY: 1107 switch (usage->hid) { 1108 case HID_BAT_ABSOLUTESTATEOFCHARGE: 1109 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true); 1110 usage->type = EV_PWR; 1111 return; 1112 } 1113 goto unknown; 1114 1115 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1116 set_bit(EV_REP, input->evbit); 1117 switch (usage->hid & HID_USAGE) { 1118 case 0x021: map_key_clear(KEY_PRINT); break; 1119 case 0x070: map_key_clear(KEY_HP); break; 1120 case 0x071: map_key_clear(KEY_CAMERA); break; 1121 case 0x072: map_key_clear(KEY_SOUND); break; 1122 case 0x073: map_key_clear(KEY_QUESTION); break; 1123 case 0x080: map_key_clear(KEY_EMAIL); break; 1124 case 0x081: map_key_clear(KEY_CHAT); break; 1125 case 0x082: map_key_clear(KEY_SEARCH); break; 1126 case 0x083: map_key_clear(KEY_CONNECT); break; 1127 case 0x084: map_key_clear(KEY_FINANCE); break; 1128 case 0x085: map_key_clear(KEY_SPORT); break; 1129 case 0x086: map_key_clear(KEY_SHOP); break; 1130 default: goto ignore; 1131 } 1132 break; 1133 1134 case HID_UP_HPVENDOR2: 1135 set_bit(EV_REP, input->evbit); 1136 switch (usage->hid & HID_USAGE) { 1137 case 0x001: map_key_clear(KEY_MICMUTE); break; 1138 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1139 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1140 default: goto ignore; 1141 } 1142 break; 1143 1144 case HID_UP_MSVENDOR: 1145 goto ignore; 1146 1147 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1148 set_bit(EV_REP, input->evbit); 1149 goto ignore; 1150 1151 case HID_UP_LOGIVENDOR: 1152 /* intentional fallback */ 1153 case HID_UP_LOGIVENDOR2: 1154 /* intentional fallback */ 1155 case HID_UP_LOGIVENDOR3: 1156 goto ignore; 1157 1158 case HID_UP_PID: 1159 switch (usage->hid & HID_USAGE) { 1160 case 0xa4: map_key_clear(BTN_DEAD); break; 1161 default: goto ignore; 1162 } 1163 break; 1164 1165 default: 1166 unknown: 1167 if (field->report_size == 1) { 1168 if (field->report->type == HID_OUTPUT_REPORT) { 1169 map_led(LED_MISC); 1170 break; 1171 } 1172 map_key(BTN_MISC); 1173 break; 1174 } 1175 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1176 map_rel(REL_MISC); 1177 break; 1178 } 1179 map_abs(ABS_MISC); 1180 break; 1181 } 1182 1183 mapped: 1184 /* Mapping failed, bail out */ 1185 if (!bit) 1186 return; 1187 1188 if (device->driver->input_mapped && 1189 device->driver->input_mapped(device, hidinput, field, usage, 1190 &bit, &max) < 0) { 1191 /* 1192 * The driver indicated that no further generic handling 1193 * of the usage is desired. 1194 */ 1195 return; 1196 } 1197 1198 set_bit(usage->type, input->evbit); 1199 1200 /* 1201 * This part is *really* controversial: 1202 * - HID aims at being generic so we should do our best to export 1203 * all incoming events 1204 * - HID describes what events are, so there is no reason for ABS_X 1205 * to be mapped to ABS_Y 1206 * - HID is using *_MISC+N as a default value, but nothing prevents 1207 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1208 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1209 * processing) 1210 * 1211 * If devices still want to use this (at their own risk), they will 1212 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1213 * the default should be a reliable mapping. 1214 */ 1215 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1216 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1217 usage->code = find_next_zero_bit(bit, 1218 max + 1, 1219 usage->code); 1220 } else { 1221 device->status |= HID_STAT_DUP_DETECTED; 1222 goto ignore; 1223 } 1224 } 1225 1226 if (usage->code > max) 1227 goto ignore; 1228 1229 if (usage->type == EV_ABS) { 1230 1231 int a = field->logical_minimum; 1232 int b = field->logical_maximum; 1233 1234 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1235 a = field->logical_minimum = 0; 1236 b = field->logical_maximum = 255; 1237 } 1238 1239 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1240 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1241 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1242 1243 input_abs_set_res(input, usage->code, 1244 hidinput_calc_abs_res(field, usage->code)); 1245 1246 /* use a larger default input buffer for MT devices */ 1247 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1248 input_set_events_per_packet(input, 60); 1249 } 1250 1251 if (usage->type == EV_ABS && 1252 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1253 int i; 1254 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1255 input_set_abs_params(input, i, -1, 1, 0, 0); 1256 set_bit(i, input->absbit); 1257 } 1258 if (usage->hat_dir && !field->dpad) 1259 field->dpad = usage->code; 1260 } 1261 1262 /* for those devices which produce Consumer volume usage as relative, 1263 * we emulate pressing volumeup/volumedown appropriate number of times 1264 * in hidinput_hid_event() 1265 */ 1266 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1267 (usage->code == ABS_VOLUME)) { 1268 set_bit(KEY_VOLUMEUP, input->keybit); 1269 set_bit(KEY_VOLUMEDOWN, input->keybit); 1270 } 1271 1272 if (usage->type == EV_KEY) { 1273 set_bit(EV_MSC, input->evbit); 1274 set_bit(MSC_SCAN, input->mscbit); 1275 } 1276 1277 return; 1278 1279 ignore: 1280 usage->type = 0; 1281 usage->code = 0; 1282 } 1283 1284 static void hidinput_handle_scroll(struct hid_usage *usage, 1285 struct input_dev *input, 1286 __s32 value) 1287 { 1288 int code; 1289 int hi_res, lo_res; 1290 1291 if (value == 0) 1292 return; 1293 1294 if (usage->code == REL_WHEEL_HI_RES) 1295 code = REL_WHEEL; 1296 else 1297 code = REL_HWHEEL; 1298 1299 /* 1300 * Windows reports one wheel click as value 120. Where a high-res 1301 * scroll wheel is present, a fraction of 120 is reported instead. 1302 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1303 * adhere to the 120 expectation. 1304 */ 1305 hi_res = value * 120/usage->resolution_multiplier; 1306 1307 usage->wheel_accumulated += hi_res; 1308 lo_res = usage->wheel_accumulated/120; 1309 if (lo_res) 1310 usage->wheel_accumulated -= lo_res * 120; 1311 1312 input_event(input, EV_REL, code, lo_res); 1313 input_event(input, EV_REL, usage->code, hi_res); 1314 } 1315 1316 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1317 { 1318 struct input_dev *input; 1319 unsigned *quirks = &hid->quirks; 1320 1321 if (!usage->type) 1322 return; 1323 1324 if (usage->type == EV_PWR) { 1325 hidinput_update_battery(hid, value); 1326 return; 1327 } 1328 1329 if (!field->hidinput) 1330 return; 1331 1332 input = field->hidinput->input; 1333 1334 if (usage->type == EV_ABS && 1335 (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) || 1336 ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))) { 1337 value = field->logical_maximum - value; 1338 } 1339 1340 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1341 int hat_dir = usage->hat_dir; 1342 if (!hat_dir) 1343 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1344 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1345 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1346 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1347 return; 1348 } 1349 1350 if (usage->hid == HID_DG_INVERT) { 1351 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1352 return; 1353 } 1354 1355 if (usage->hid == HID_DG_INRANGE) { 1356 if (value) { 1357 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1358 return; 1359 } 1360 input_event(input, usage->type, usage->code, 0); 1361 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1362 return; 1363 } 1364 1365 if (usage->hid == HID_DG_TIPPRESSURE && (*quirks & HID_QUIRK_NOTOUCH)) { 1366 int a = field->logical_minimum; 1367 int b = field->logical_maximum; 1368 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1369 } 1370 1371 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1372 dbg_hid("Maximum Effects - %d\n",value); 1373 return; 1374 } 1375 1376 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1377 dbg_hid("PID Pool Report\n"); 1378 return; 1379 } 1380 1381 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1382 return; 1383 1384 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1385 usage->code == REL_HWHEEL_HI_RES)) { 1386 hidinput_handle_scroll(usage, input, value); 1387 return; 1388 } 1389 1390 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1391 (usage->code == ABS_VOLUME)) { 1392 int count = abs(value); 1393 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1394 int i; 1395 1396 for (i = 0; i < count; i++) { 1397 input_event(input, EV_KEY, direction, 1); 1398 input_sync(input); 1399 input_event(input, EV_KEY, direction, 0); 1400 input_sync(input); 1401 } 1402 return; 1403 } 1404 1405 /* 1406 * Ignore out-of-range values as per HID specification, 1407 * section 5.10 and 6.2.25, when NULL state bit is present. 1408 * When it's not, clamp the value to match Microsoft's input 1409 * driver as mentioned in "Required HID usages for digitizers": 1410 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1411 * 1412 * The logical_minimum < logical_maximum check is done so that we 1413 * don't unintentionally discard values sent by devices which 1414 * don't specify logical min and max. 1415 */ 1416 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1417 (field->logical_minimum < field->logical_maximum)) { 1418 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1419 (value < field->logical_minimum || 1420 value > field->logical_maximum)) { 1421 dbg_hid("Ignoring out-of-range value %x\n", value); 1422 return; 1423 } 1424 value = clamp(value, 1425 field->logical_minimum, 1426 field->logical_maximum); 1427 } 1428 1429 /* 1430 * Ignore reports for absolute data if the data didn't change. This is 1431 * not only an optimization but also fixes 'dead' key reports. Some 1432 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1433 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1434 * can only have one of them physically available. The 'dead' keys 1435 * report constant 0. As all map to the same keycode, they'd confuse 1436 * the input layer. If we filter the 'dead' keys on the HID level, we 1437 * skip the keycode translation and only forward real events. 1438 */ 1439 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1440 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1441 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1442 usage->usage_index < field->maxusage && 1443 value == field->value[usage->usage_index]) 1444 return; 1445 1446 /* report the usage code as scancode if the key status has changed */ 1447 if (usage->type == EV_KEY && 1448 (!test_bit(usage->code, input->key)) == value) 1449 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1450 1451 input_event(input, usage->type, usage->code, value); 1452 1453 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1454 usage->type == EV_KEY && value) { 1455 input_sync(input); 1456 input_event(input, usage->type, usage->code, 0); 1457 } 1458 } 1459 1460 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1461 { 1462 struct hid_input *hidinput; 1463 1464 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1465 return; 1466 1467 list_for_each_entry(hidinput, &hid->inputs, list) 1468 input_sync(hidinput->input); 1469 } 1470 EXPORT_SYMBOL_GPL(hidinput_report_event); 1471 1472 static int hidinput_find_field(struct hid_device *hid, unsigned int type, 1473 unsigned int code, struct hid_field **field) 1474 { 1475 struct hid_report *report; 1476 int i, j; 1477 1478 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1479 for (i = 0; i < report->maxfield; i++) { 1480 *field = report->field[i]; 1481 for (j = 0; j < (*field)->maxusage; j++) 1482 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1483 return j; 1484 } 1485 } 1486 return -1; 1487 } 1488 1489 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1490 { 1491 struct hid_report *report; 1492 struct hid_field *field; 1493 int i, j; 1494 1495 list_for_each_entry(report, 1496 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1497 list) { 1498 for (i = 0; i < report->maxfield; i++) { 1499 field = report->field[i]; 1500 for (j = 0; j < field->maxusage; j++) 1501 if (field->usage[j].type == EV_LED) 1502 return field; 1503 } 1504 } 1505 return NULL; 1506 } 1507 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1508 1509 unsigned int hidinput_count_leds(struct hid_device *hid) 1510 { 1511 struct hid_report *report; 1512 struct hid_field *field; 1513 int i, j; 1514 unsigned int count = 0; 1515 1516 list_for_each_entry(report, 1517 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1518 list) { 1519 for (i = 0; i < report->maxfield; i++) { 1520 field = report->field[i]; 1521 for (j = 0; j < field->maxusage; j++) 1522 if (field->usage[j].type == EV_LED && 1523 field->value[j]) 1524 count += 1; 1525 } 1526 } 1527 return count; 1528 } 1529 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1530 1531 static void hidinput_led_worker(struct work_struct *work) 1532 { 1533 struct hid_device *hid = container_of(work, struct hid_device, 1534 led_work); 1535 struct hid_field *field; 1536 struct hid_report *report; 1537 int ret; 1538 u32 len; 1539 __u8 *buf; 1540 1541 field = hidinput_get_led_field(hid); 1542 if (!field) 1543 return; 1544 1545 /* 1546 * field->report is accessed unlocked regarding HID core. So there might 1547 * be another incoming SET-LED request from user-space, which changes 1548 * the LED state while we assemble our outgoing buffer. However, this 1549 * doesn't matter as hid_output_report() correctly converts it into a 1550 * boolean value no matter what information is currently set on the LED 1551 * field (even garbage). So the remote device will always get a valid 1552 * request. 1553 * And in case we send a wrong value, a next led worker is spawned 1554 * for every SET-LED request so the following worker will send the 1555 * correct value, guaranteed! 1556 */ 1557 1558 report = field->report; 1559 1560 /* use custom SET_REPORT request if possible (asynchronous) */ 1561 if (hid->ll_driver->request) 1562 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1563 1564 /* fall back to generic raw-output-report */ 1565 len = hid_report_len(report); 1566 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1567 if (!buf) 1568 return; 1569 1570 hid_output_report(report, buf); 1571 /* synchronous output report */ 1572 ret = hid_hw_output_report(hid, buf, len); 1573 if (ret == -ENOSYS) 1574 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1575 HID_REQ_SET_REPORT); 1576 kfree(buf); 1577 } 1578 1579 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1580 unsigned int code, int value) 1581 { 1582 struct hid_device *hid = input_get_drvdata(dev); 1583 struct hid_field *field; 1584 int offset; 1585 1586 if (type == EV_FF) 1587 return input_ff_event(dev, type, code, value); 1588 1589 if (type != EV_LED) 1590 return -1; 1591 1592 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1593 hid_warn(dev, "event field not found\n"); 1594 return -1; 1595 } 1596 1597 hid_set_field(field, offset, value); 1598 1599 schedule_work(&hid->led_work); 1600 return 0; 1601 } 1602 1603 static int hidinput_open(struct input_dev *dev) 1604 { 1605 struct hid_device *hid = input_get_drvdata(dev); 1606 1607 return hid_hw_open(hid); 1608 } 1609 1610 static void hidinput_close(struct input_dev *dev) 1611 { 1612 struct hid_device *hid = input_get_drvdata(dev); 1613 1614 hid_hw_close(hid); 1615 } 1616 1617 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1618 struct hid_report *report, bool use_logical_max) 1619 { 1620 struct hid_usage *usage; 1621 bool update_needed = false; 1622 bool get_report_completed = false; 1623 int i, j; 1624 1625 if (report->maxfield == 0) 1626 return false; 1627 1628 for (i = 0; i < report->maxfield; i++) { 1629 __s32 value = use_logical_max ? 1630 report->field[i]->logical_maximum : 1631 report->field[i]->logical_minimum; 1632 1633 /* There is no good reason for a Resolution 1634 * Multiplier to have a count other than 1. 1635 * Ignore that case. 1636 */ 1637 if (report->field[i]->report_count != 1) 1638 continue; 1639 1640 for (j = 0; j < report->field[i]->maxusage; j++) { 1641 usage = &report->field[i]->usage[j]; 1642 1643 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1644 continue; 1645 1646 /* 1647 * If we have more than one feature within this 1648 * report we need to fill in the bits from the 1649 * others before we can overwrite the ones for the 1650 * Resolution Multiplier. 1651 * 1652 * But if we're not allowed to read from the device, 1653 * we just bail. Such a device should not exist 1654 * anyway. 1655 */ 1656 if (!get_report_completed && report->maxfield > 1) { 1657 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) 1658 return update_needed; 1659 1660 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1661 hid_hw_wait(hid); 1662 get_report_completed = true; 1663 } 1664 1665 report->field[i]->value[j] = value; 1666 update_needed = true; 1667 } 1668 } 1669 1670 return update_needed; 1671 } 1672 1673 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1674 { 1675 struct hid_report_enum *rep_enum; 1676 struct hid_report *rep; 1677 int ret; 1678 1679 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1680 list_for_each_entry(rep, &rep_enum->report_list, list) { 1681 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1682 rep, true); 1683 1684 if (update_needed) { 1685 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1686 if (ret) { 1687 __hidinput_change_resolution_multipliers(hid, 1688 rep, false); 1689 return; 1690 } 1691 } 1692 } 1693 1694 /* refresh our structs */ 1695 hid_setup_resolution_multiplier(hid); 1696 } 1697 1698 static void report_features(struct hid_device *hid) 1699 { 1700 struct hid_driver *drv = hid->driver; 1701 struct hid_report_enum *rep_enum; 1702 struct hid_report *rep; 1703 struct hid_usage *usage; 1704 int i, j; 1705 1706 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1707 list_for_each_entry(rep, &rep_enum->report_list, list) 1708 for (i = 0; i < rep->maxfield; i++) { 1709 /* Ignore if report count is out of bounds. */ 1710 if (rep->field[i]->report_count < 1) 1711 continue; 1712 1713 for (j = 0; j < rep->field[i]->maxusage; j++) { 1714 usage = &rep->field[i]->usage[j]; 1715 1716 /* Verify if Battery Strength feature is available */ 1717 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1718 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1719 rep->field[i], false); 1720 1721 if (drv->feature_mapping) 1722 drv->feature_mapping(hid, rep->field[i], usage); 1723 } 1724 } 1725 } 1726 1727 static struct hid_input *hidinput_allocate(struct hid_device *hid, 1728 unsigned int application) 1729 { 1730 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1731 struct input_dev *input_dev = input_allocate_device(); 1732 const char *suffix = NULL; 1733 size_t suffix_len, name_len; 1734 1735 if (!hidinput || !input_dev) 1736 goto fail; 1737 1738 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1739 hid->maxapplication > 1) { 1740 switch (application) { 1741 case HID_GD_KEYBOARD: 1742 suffix = "Keyboard"; 1743 break; 1744 case HID_GD_KEYPAD: 1745 suffix = "Keypad"; 1746 break; 1747 case HID_GD_MOUSE: 1748 suffix = "Mouse"; 1749 break; 1750 case HID_DG_PEN: 1751 /* 1752 * yes, there is an issue here: 1753 * DG_PEN -> "Stylus" 1754 * DG_STYLUS -> "Pen" 1755 * But changing this now means users with config snippets 1756 * will have to change it and the test suite will not be happy. 1757 */ 1758 suffix = "Stylus"; 1759 break; 1760 case HID_DG_STYLUS: 1761 suffix = "Pen"; 1762 break; 1763 case HID_DG_TOUCHSCREEN: 1764 suffix = "Touchscreen"; 1765 break; 1766 case HID_DG_TOUCHPAD: 1767 suffix = "Touchpad"; 1768 break; 1769 case HID_GD_SYSTEM_CONTROL: 1770 suffix = "System Control"; 1771 break; 1772 case HID_CP_CONSUMER_CONTROL: 1773 suffix = "Consumer Control"; 1774 break; 1775 case HID_GD_WIRELESS_RADIO_CTLS: 1776 suffix = "Wireless Radio Control"; 1777 break; 1778 case HID_GD_SYSTEM_MULTIAXIS: 1779 suffix = "System Multi Axis"; 1780 break; 1781 default: 1782 break; 1783 } 1784 } 1785 1786 if (suffix) { 1787 name_len = strlen(hid->name); 1788 suffix_len = strlen(suffix); 1789 if ((name_len < suffix_len) || 1790 strcmp(hid->name + name_len - suffix_len, suffix)) { 1791 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1792 hid->name, suffix); 1793 if (!hidinput->name) 1794 goto fail; 1795 } 1796 } 1797 1798 input_set_drvdata(input_dev, hid); 1799 input_dev->event = hidinput_input_event; 1800 input_dev->open = hidinput_open; 1801 input_dev->close = hidinput_close; 1802 input_dev->setkeycode = hidinput_setkeycode; 1803 input_dev->getkeycode = hidinput_getkeycode; 1804 1805 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1806 input_dev->phys = hid->phys; 1807 input_dev->uniq = hid->uniq; 1808 input_dev->id.bustype = hid->bus; 1809 input_dev->id.vendor = hid->vendor; 1810 input_dev->id.product = hid->product; 1811 input_dev->id.version = hid->version; 1812 input_dev->dev.parent = &hid->dev; 1813 1814 hidinput->input = input_dev; 1815 hidinput->application = application; 1816 list_add_tail(&hidinput->list, &hid->inputs); 1817 1818 INIT_LIST_HEAD(&hidinput->reports); 1819 1820 return hidinput; 1821 1822 fail: 1823 kfree(hidinput); 1824 input_free_device(input_dev); 1825 hid_err(hid, "Out of memory during hid input probe\n"); 1826 return NULL; 1827 } 1828 1829 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1830 { 1831 int i; 1832 unsigned long r = 0; 1833 1834 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1835 r |= hidinput->input->evbit[i]; 1836 1837 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1838 r |= hidinput->input->keybit[i]; 1839 1840 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1841 r |= hidinput->input->relbit[i]; 1842 1843 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1844 r |= hidinput->input->absbit[i]; 1845 1846 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1847 r |= hidinput->input->mscbit[i]; 1848 1849 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1850 r |= hidinput->input->ledbit[i]; 1851 1852 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1853 r |= hidinput->input->sndbit[i]; 1854 1855 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1856 r |= hidinput->input->ffbit[i]; 1857 1858 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1859 r |= hidinput->input->swbit[i]; 1860 1861 return !!r; 1862 } 1863 1864 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1865 struct hid_input *hidinput) 1866 { 1867 struct hid_report *report; 1868 int i, k; 1869 1870 list_del(&hidinput->list); 1871 input_free_device(hidinput->input); 1872 kfree(hidinput->name); 1873 1874 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1875 if (k == HID_OUTPUT_REPORT && 1876 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1877 continue; 1878 1879 list_for_each_entry(report, &hid->report_enum[k].report_list, 1880 list) { 1881 1882 for (i = 0; i < report->maxfield; i++) 1883 if (report->field[i]->hidinput == hidinput) 1884 report->field[i]->hidinput = NULL; 1885 } 1886 } 1887 1888 kfree(hidinput); 1889 } 1890 1891 static struct hid_input *hidinput_match(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->report && 1898 hidinput->report->id == report->id) 1899 return hidinput; 1900 } 1901 1902 return NULL; 1903 } 1904 1905 static struct hid_input *hidinput_match_application(struct hid_report *report) 1906 { 1907 struct hid_device *hid = report->device; 1908 struct hid_input *hidinput; 1909 1910 list_for_each_entry(hidinput, &hid->inputs, list) { 1911 if (hidinput->application == report->application) 1912 return hidinput; 1913 1914 /* 1915 * Keep SystemControl and ConsumerControl applications together 1916 * with the main keyboard, if present. 1917 */ 1918 if ((report->application == HID_GD_SYSTEM_CONTROL || 1919 report->application == HID_CP_CONSUMER_CONTROL) && 1920 hidinput->application == HID_GD_KEYBOARD) { 1921 return hidinput; 1922 } 1923 } 1924 1925 return NULL; 1926 } 1927 1928 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1929 struct hid_report *report) 1930 { 1931 int i, j; 1932 1933 for (i = 0; i < report->maxfield; i++) 1934 for (j = 0; j < report->field[i]->maxusage; j++) 1935 hidinput_configure_usage(hidinput, report->field[i], 1936 report->field[i]->usage + j); 1937 } 1938 1939 /* 1940 * Register the input device; print a message. 1941 * Configure the input layer interface 1942 * Read all reports and initialize the absolute field values. 1943 */ 1944 1945 int hidinput_connect(struct hid_device *hid, unsigned int force) 1946 { 1947 struct hid_driver *drv = hid->driver; 1948 struct hid_report *report; 1949 struct hid_input *next, *hidinput = NULL; 1950 unsigned int application; 1951 int i, k; 1952 1953 INIT_LIST_HEAD(&hid->inputs); 1954 INIT_WORK(&hid->led_work, hidinput_led_worker); 1955 1956 hid->status &= ~HID_STAT_DUP_DETECTED; 1957 1958 if (!force) { 1959 for (i = 0; i < hid->maxcollection; i++) { 1960 struct hid_collection *col = &hid->collection[i]; 1961 if (col->type == HID_COLLECTION_APPLICATION || 1962 col->type == HID_COLLECTION_PHYSICAL) 1963 if (IS_INPUT_APPLICATION(col->usage)) 1964 break; 1965 } 1966 1967 if (i == hid->maxcollection) 1968 return -1; 1969 } 1970 1971 report_features(hid); 1972 1973 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1974 if (k == HID_OUTPUT_REPORT && 1975 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1976 continue; 1977 1978 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1979 1980 if (!report->maxfield) 1981 continue; 1982 1983 application = report->application; 1984 1985 /* 1986 * Find the previous hidinput report attached 1987 * to this report id. 1988 */ 1989 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1990 hidinput = hidinput_match(report); 1991 else if (hid->maxapplication > 1 && 1992 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1993 hidinput = hidinput_match_application(report); 1994 1995 if (!hidinput) { 1996 hidinput = hidinput_allocate(hid, application); 1997 if (!hidinput) 1998 goto out_unwind; 1999 } 2000 2001 hidinput_configure_usages(hidinput, report); 2002 2003 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 2004 hidinput->report = report; 2005 2006 list_add_tail(&report->hidinput_list, 2007 &hidinput->reports); 2008 } 2009 } 2010 2011 hidinput_change_resolution_multipliers(hid); 2012 2013 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 2014 if (drv->input_configured && 2015 drv->input_configured(hid, hidinput)) 2016 goto out_unwind; 2017 2018 if (!hidinput_has_been_populated(hidinput)) { 2019 /* no need to register an input device not populated */ 2020 hidinput_cleanup_hidinput(hid, hidinput); 2021 continue; 2022 } 2023 2024 if (input_register_device(hidinput->input)) 2025 goto out_unwind; 2026 hidinput->registered = true; 2027 } 2028 2029 if (list_empty(&hid->inputs)) { 2030 hid_err(hid, "No inputs registered, leaving\n"); 2031 goto out_unwind; 2032 } 2033 2034 if (hid->status & HID_STAT_DUP_DETECTED) 2035 hid_dbg(hid, 2036 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 2037 2038 return 0; 2039 2040 out_unwind: 2041 /* unwind the ones we already registered */ 2042 hidinput_disconnect(hid); 2043 2044 return -1; 2045 } 2046 EXPORT_SYMBOL_GPL(hidinput_connect); 2047 2048 void hidinput_disconnect(struct hid_device *hid) 2049 { 2050 struct hid_input *hidinput, *next; 2051 2052 hidinput_cleanup_battery(hid); 2053 2054 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 2055 list_del(&hidinput->list); 2056 if (hidinput->registered) 2057 input_unregister_device(hidinput->input); 2058 else 2059 input_free_device(hidinput->input); 2060 kfree(hidinput->name); 2061 kfree(hidinput); 2062 } 2063 2064 /* led_work is spawned by input_dev callbacks, but doesn't access the 2065 * parent input_dev at all. Once all input devices are removed, we 2066 * know that led_work will never get restarted, so we can cancel it 2067 * synchronously and are safe. */ 2068 cancel_work_sync(&hid->led_work); 2069 } 2070 EXPORT_SYMBOL_GPL(hidinput_disconnect); 2071