1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 2000-2001 Vojtech Pavlik 4 * Copyright (c) 2006-2010 Jiri Kosina 5 * 6 * HID to Linux Input mapping 7 */ 8 9 /* 10 * 11 * Should you need to contact me, the author, you can do so either by 12 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 13 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 14 */ 15 16 #include <linux/module.h> 17 #include <linux/slab.h> 18 #include <linux/kernel.h> 19 20 #include <linux/hid.h> 21 #include <linux/hid-debug.h> 22 23 #include "hid-ids.h" 24 25 #define unk KEY_UNKNOWN 26 27 static const unsigned char hid_keyboard[256] = { 28 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, 29 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, 30 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, 31 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, 32 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, 33 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, 34 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, 35 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, 36 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk, 37 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk, 38 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 39 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk, 40 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 41 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk, 42 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, 43 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk 44 }; 45 46 static const struct { 47 __s32 x; 48 __s32 y; 49 } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; 50 51 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c)) 52 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c)) 53 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c)) 54 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c)) 55 56 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 57 &max, EV_ABS, (c)) 58 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 59 &max, EV_KEY, (c)) 60 61 static bool match_scancode(struct hid_usage *usage, 62 unsigned int cur_idx, unsigned int scancode) 63 { 64 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode; 65 } 66 67 static bool match_keycode(struct hid_usage *usage, 68 unsigned int cur_idx, unsigned int keycode) 69 { 70 /* 71 * We should exclude unmapped usages when doing lookup by keycode. 72 */ 73 return (usage->type == EV_KEY && usage->code == keycode); 74 } 75 76 static bool match_index(struct hid_usage *usage, 77 unsigned int cur_idx, unsigned int idx) 78 { 79 return cur_idx == idx; 80 } 81 82 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage, 83 unsigned int cur_idx, unsigned int val); 84 85 static struct hid_usage *hidinput_find_key(struct hid_device *hid, 86 hid_usage_cmp_t match, 87 unsigned int value, 88 unsigned int *usage_idx) 89 { 90 unsigned int i, j, k, cur_idx = 0; 91 struct hid_report *report; 92 struct hid_usage *usage; 93 94 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 95 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 96 for (i = 0; i < report->maxfield; i++) { 97 for (j = 0; j < report->field[i]->maxusage; j++) { 98 usage = report->field[i]->usage + j; 99 if (usage->type == EV_KEY || usage->type == 0) { 100 if (match(usage, cur_idx, value)) { 101 if (usage_idx) 102 *usage_idx = cur_idx; 103 return usage; 104 } 105 cur_idx++; 106 } 107 } 108 } 109 } 110 } 111 return NULL; 112 } 113 114 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid, 115 const struct input_keymap_entry *ke, 116 unsigned int *index) 117 { 118 struct hid_usage *usage; 119 unsigned int scancode; 120 121 if (ke->flags & INPUT_KEYMAP_BY_INDEX) 122 usage = hidinput_find_key(hid, match_index, ke->index, index); 123 else if (input_scancode_to_scalar(ke, &scancode) == 0) 124 usage = hidinput_find_key(hid, match_scancode, scancode, index); 125 else 126 usage = NULL; 127 128 return usage; 129 } 130 131 static int hidinput_getkeycode(struct input_dev *dev, 132 struct input_keymap_entry *ke) 133 { 134 struct hid_device *hid = input_get_drvdata(dev); 135 struct hid_usage *usage; 136 unsigned int scancode, index; 137 138 usage = hidinput_locate_usage(hid, ke, &index); 139 if (usage) { 140 ke->keycode = usage->type == EV_KEY ? 141 usage->code : KEY_RESERVED; 142 ke->index = index; 143 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE); 144 ke->len = sizeof(scancode); 145 memcpy(ke->scancode, &scancode, sizeof(scancode)); 146 return 0; 147 } 148 149 return -EINVAL; 150 } 151 152 static int hidinput_setkeycode(struct input_dev *dev, 153 const struct input_keymap_entry *ke, 154 unsigned int *old_keycode) 155 { 156 struct hid_device *hid = input_get_drvdata(dev); 157 struct hid_usage *usage; 158 159 usage = hidinput_locate_usage(hid, ke, NULL); 160 if (usage) { 161 *old_keycode = usage->type == EV_KEY ? 162 usage->code : KEY_RESERVED; 163 usage->code = ke->keycode; 164 165 clear_bit(*old_keycode, dev->keybit); 166 set_bit(usage->code, dev->keybit); 167 dbg_hid("Assigned keycode %d to HID usage code %x\n", 168 usage->code, usage->hid); 169 170 /* 171 * Set the keybit for the old keycode if the old keycode is used 172 * by another key 173 */ 174 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL)) 175 set_bit(*old_keycode, dev->keybit); 176 177 return 0; 178 } 179 180 return -EINVAL; 181 } 182 183 184 /** 185 * hidinput_calc_abs_res - calculate an absolute axis resolution 186 * @field: the HID report field to calculate resolution for 187 * @code: axis code 188 * 189 * The formula is: 190 * (logical_maximum - logical_minimum) 191 * resolution = ---------------------------------------------------------- 192 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent 193 * 194 * as seen in the HID specification v1.11 6.2.2.7 Global Items. 195 * 196 * Only exponent 1 length units are processed. Centimeters and inches are 197 * converted to millimeters. Degrees are converted to radians. 198 */ 199 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) 200 { 201 __s32 unit_exponent = field->unit_exponent; 202 __s32 logical_extents = field->logical_maximum - 203 field->logical_minimum; 204 __s32 physical_extents = field->physical_maximum - 205 field->physical_minimum; 206 __s32 prev; 207 208 /* Check if the extents are sane */ 209 if (logical_extents <= 0 || physical_extents <= 0) 210 return 0; 211 212 /* 213 * Verify and convert units. 214 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding 215 */ 216 switch (code) { 217 case ABS_X: 218 case ABS_Y: 219 case ABS_Z: 220 case ABS_MT_POSITION_X: 221 case ABS_MT_POSITION_Y: 222 case ABS_MT_TOOL_X: 223 case ABS_MT_TOOL_Y: 224 case ABS_MT_TOUCH_MAJOR: 225 case ABS_MT_TOUCH_MINOR: 226 if (field->unit == 0x11) { /* If centimeters */ 227 /* Convert to millimeters */ 228 unit_exponent += 1; 229 } else if (field->unit == 0x13) { /* If inches */ 230 /* Convert to millimeters */ 231 prev = physical_extents; 232 physical_extents *= 254; 233 if (physical_extents < prev) 234 return 0; 235 unit_exponent -= 1; 236 } else { 237 return 0; 238 } 239 break; 240 241 case ABS_RX: 242 case ABS_RY: 243 case ABS_RZ: 244 case ABS_WHEEL: 245 case ABS_TILT_X: 246 case ABS_TILT_Y: 247 if (field->unit == 0x14) { /* If degrees */ 248 /* Convert to radians */ 249 prev = logical_extents; 250 logical_extents *= 573; 251 if (logical_extents < prev) 252 return 0; 253 unit_exponent += 1; 254 } else if (field->unit != 0x12) { /* If not radians */ 255 return 0; 256 } 257 break; 258 259 default: 260 return 0; 261 } 262 263 /* Apply negative unit exponent */ 264 for (; unit_exponent < 0; unit_exponent++) { 265 prev = logical_extents; 266 logical_extents *= 10; 267 if (logical_extents < prev) 268 return 0; 269 } 270 /* Apply positive unit exponent */ 271 for (; unit_exponent > 0; unit_exponent--) { 272 prev = physical_extents; 273 physical_extents *= 10; 274 if (physical_extents < prev) 275 return 0; 276 } 277 278 /* Calculate resolution */ 279 return DIV_ROUND_CLOSEST(logical_extents, physical_extents); 280 } 281 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res); 282 283 #ifdef CONFIG_HID_BATTERY_STRENGTH 284 static enum power_supply_property hidinput_battery_props[] = { 285 POWER_SUPPLY_PROP_PRESENT, 286 POWER_SUPPLY_PROP_ONLINE, 287 POWER_SUPPLY_PROP_CAPACITY, 288 POWER_SUPPLY_PROP_MODEL_NAME, 289 POWER_SUPPLY_PROP_STATUS, 290 POWER_SUPPLY_PROP_SCOPE, 291 }; 292 293 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */ 294 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */ 295 #define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */ 296 297 static const struct hid_device_id hid_battery_quirks[] = { 298 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 299 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO), 300 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 301 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 302 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI), 303 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 304 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 305 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI), 306 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 307 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 308 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO), 309 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 310 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 311 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI), 312 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 313 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, 314 USB_DEVICE_ID_ELECOM_BM084), 315 HID_BATTERY_QUIRK_IGNORE }, 316 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL, 317 USB_DEVICE_ID_SYMBOL_SCANNER_3), 318 HID_BATTERY_QUIRK_IGNORE }, 319 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK, 320 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), 321 HID_BATTERY_QUIRK_IGNORE }, 322 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, 323 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD), 324 HID_BATTERY_QUIRK_IGNORE }, 325 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN), 326 HID_BATTERY_QUIRK_IGNORE }, 327 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15), 328 HID_BATTERY_QUIRK_IGNORE }, 329 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN), 330 HID_BATTERY_QUIRK_IGNORE }, 331 {} 332 }; 333 334 static unsigned find_battery_quirk(struct hid_device *hdev) 335 { 336 unsigned quirks = 0; 337 const struct hid_device_id *match; 338 339 match = hid_match_id(hdev, hid_battery_quirks); 340 if (match != NULL) 341 quirks = match->driver_data; 342 343 return quirks; 344 } 345 346 static int hidinput_scale_battery_capacity(struct hid_device *dev, 347 int value) 348 { 349 if (dev->battery_min < dev->battery_max && 350 value >= dev->battery_min && value <= dev->battery_max) 351 value = ((value - dev->battery_min) * 100) / 352 (dev->battery_max - dev->battery_min); 353 354 return value; 355 } 356 357 static int hidinput_query_battery_capacity(struct hid_device *dev) 358 { 359 u8 *buf; 360 int ret; 361 362 buf = kmalloc(4, GFP_KERNEL); 363 if (!buf) 364 return -ENOMEM; 365 366 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4, 367 dev->battery_report_type, HID_REQ_GET_REPORT); 368 if (ret < 2) { 369 kfree(buf); 370 return -ENODATA; 371 } 372 373 ret = hidinput_scale_battery_capacity(dev, buf[1]); 374 kfree(buf); 375 return ret; 376 } 377 378 static int hidinput_get_battery_property(struct power_supply *psy, 379 enum power_supply_property prop, 380 union power_supply_propval *val) 381 { 382 struct hid_device *dev = power_supply_get_drvdata(psy); 383 int value; 384 int ret = 0; 385 386 switch (prop) { 387 case POWER_SUPPLY_PROP_PRESENT: 388 case POWER_SUPPLY_PROP_ONLINE: 389 val->intval = 1; 390 break; 391 392 case POWER_SUPPLY_PROP_CAPACITY: 393 if (dev->battery_status != HID_BATTERY_REPORTED && 394 !dev->battery_avoid_query) { 395 value = hidinput_query_battery_capacity(dev); 396 if (value < 0) 397 return value; 398 } else { 399 value = dev->battery_capacity; 400 } 401 402 val->intval = value; 403 break; 404 405 case POWER_SUPPLY_PROP_MODEL_NAME: 406 val->strval = dev->name; 407 break; 408 409 case POWER_SUPPLY_PROP_STATUS: 410 if (dev->battery_status != HID_BATTERY_REPORTED && 411 !dev->battery_avoid_query) { 412 value = hidinput_query_battery_capacity(dev); 413 if (value < 0) 414 return value; 415 416 dev->battery_capacity = value; 417 dev->battery_status = HID_BATTERY_QUERIED; 418 } 419 420 if (dev->battery_status == HID_BATTERY_UNKNOWN) 421 val->intval = POWER_SUPPLY_STATUS_UNKNOWN; 422 else 423 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 424 break; 425 426 case POWER_SUPPLY_PROP_SCOPE: 427 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 428 break; 429 430 default: 431 ret = -EINVAL; 432 break; 433 } 434 435 return ret; 436 } 437 438 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 439 struct hid_field *field, bool is_percentage) 440 { 441 struct power_supply_desc *psy_desc; 442 struct power_supply_config psy_cfg = { .drv_data = dev, }; 443 unsigned quirks; 444 s32 min, max; 445 int error; 446 447 if (dev->battery) 448 return 0; /* already initialized? */ 449 450 quirks = find_battery_quirk(dev); 451 452 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 453 dev->bus, dev->vendor, dev->product, dev->version, quirks); 454 455 if (quirks & HID_BATTERY_QUIRK_IGNORE) 456 return 0; 457 458 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); 459 if (!psy_desc) 460 return -ENOMEM; 461 462 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", 463 strlen(dev->uniq) ? 464 dev->uniq : dev_name(&dev->dev)); 465 if (!psy_desc->name) { 466 error = -ENOMEM; 467 goto err_free_mem; 468 } 469 470 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 471 psy_desc->properties = hidinput_battery_props; 472 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); 473 psy_desc->use_for_apm = 0; 474 psy_desc->get_property = hidinput_get_battery_property; 475 476 min = field->logical_minimum; 477 max = field->logical_maximum; 478 479 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) { 480 min = 0; 481 max = 100; 482 } 483 484 if (quirks & HID_BATTERY_QUIRK_FEATURE) 485 report_type = HID_FEATURE_REPORT; 486 487 dev->battery_min = min; 488 dev->battery_max = max; 489 dev->battery_report_type = report_type; 490 dev->battery_report_id = field->report->id; 491 492 /* 493 * Stylus is normally not connected to the device and thus we 494 * can't query the device and get meaningful battery strength. 495 * We have to wait for the device to report it on its own. 496 */ 497 dev->battery_avoid_query = report_type == HID_INPUT_REPORT && 498 field->physical == HID_DG_STYLUS; 499 500 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); 501 if (IS_ERR(dev->battery)) { 502 error = PTR_ERR(dev->battery); 503 hid_warn(dev, "can't register power supply: %d\n", error); 504 goto err_free_name; 505 } 506 507 power_supply_powers(dev->battery, &dev->dev); 508 return 0; 509 510 err_free_name: 511 kfree(psy_desc->name); 512 err_free_mem: 513 kfree(psy_desc); 514 dev->battery = NULL; 515 return error; 516 } 517 518 static void hidinput_cleanup_battery(struct hid_device *dev) 519 { 520 const struct power_supply_desc *psy_desc; 521 522 if (!dev->battery) 523 return; 524 525 psy_desc = dev->battery->desc; 526 power_supply_unregister(dev->battery); 527 kfree(psy_desc->name); 528 kfree(psy_desc); 529 dev->battery = NULL; 530 } 531 532 static void hidinput_update_battery(struct hid_device *dev, int value) 533 { 534 int capacity; 535 536 if (!dev->battery) 537 return; 538 539 if (value == 0 || value < dev->battery_min || value > dev->battery_max) 540 return; 541 542 capacity = hidinput_scale_battery_capacity(dev, value); 543 544 if (dev->battery_status != HID_BATTERY_REPORTED || 545 capacity != dev->battery_capacity || 546 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) { 547 dev->battery_capacity = capacity; 548 dev->battery_status = HID_BATTERY_REPORTED; 549 dev->battery_ratelimit_time = 550 ktime_add_ms(ktime_get_coarse(), 30 * 1000); 551 power_supply_changed(dev->battery); 552 } 553 } 554 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 555 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 556 struct hid_field *field, bool is_percentage) 557 { 558 return 0; 559 } 560 561 static void hidinput_cleanup_battery(struct hid_device *dev) 562 { 563 } 564 565 static void hidinput_update_battery(struct hid_device *dev, int value) 566 { 567 } 568 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 569 570 static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field, 571 unsigned int type, unsigned int usage) 572 { 573 struct hid_collection *collection; 574 575 collection = &device->collection[field->usage->collection_index]; 576 577 return collection->type == type && collection->usage == usage; 578 } 579 580 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 581 struct hid_usage *usage) 582 { 583 struct input_dev *input = hidinput->input; 584 struct hid_device *device = input_get_drvdata(input); 585 int max = 0, code; 586 unsigned long *bit = NULL; 587 588 field->hidinput = hidinput; 589 590 if (field->flags & HID_MAIN_ITEM_CONSTANT) 591 goto ignore; 592 593 /* Ignore if report count is out of bounds. */ 594 if (field->report_count < 1) 595 goto ignore; 596 597 /* only LED usages are supported in output fields */ 598 if (field->report_type == HID_OUTPUT_REPORT && 599 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 600 goto ignore; 601 } 602 603 if (device->driver->input_mapping) { 604 int ret = device->driver->input_mapping(device, hidinput, field, 605 usage, &bit, &max); 606 if (ret > 0) 607 goto mapped; 608 if (ret < 0) 609 goto ignore; 610 } 611 612 switch (usage->hid & HID_USAGE_PAGE) { 613 case HID_UP_UNDEFINED: 614 goto ignore; 615 616 case HID_UP_KEYBOARD: 617 set_bit(EV_REP, input->evbit); 618 619 if ((usage->hid & HID_USAGE) < 256) { 620 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 621 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 622 } else 623 map_key(KEY_UNKNOWN); 624 625 break; 626 627 case HID_UP_BUTTON: 628 code = ((usage->hid - 1) & HID_USAGE); 629 630 switch (field->application) { 631 case HID_GD_MOUSE: 632 case HID_GD_POINTER: code += BTN_MOUSE; break; 633 case HID_GD_JOYSTICK: 634 if (code <= 0xf) 635 code += BTN_JOYSTICK; 636 else 637 code += BTN_TRIGGER_HAPPY - 0x10; 638 break; 639 case HID_GD_GAMEPAD: 640 if (code <= 0xf) 641 code += BTN_GAMEPAD; 642 else 643 code += BTN_TRIGGER_HAPPY - 0x10; 644 break; 645 case HID_CP_CONSUMER_CONTROL: 646 if (hidinput_field_in_collection(device, field, 647 HID_COLLECTION_NAMED_ARRAY, 648 HID_CP_PROGRAMMABLEBUTTONS)) { 649 if (code <= 0x1d) 650 code += KEY_MACRO1; 651 else 652 code += BTN_TRIGGER_HAPPY - 0x1e; 653 } else { 654 goto ignore; 655 } 656 break; 657 default: 658 switch (field->physical) { 659 case HID_GD_MOUSE: 660 case HID_GD_POINTER: code += BTN_MOUSE; break; 661 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 662 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 663 default: code += BTN_MISC; 664 } 665 } 666 667 map_key(code); 668 break; 669 670 case HID_UP_SIMULATION: 671 switch (usage->hid & 0xffff) { 672 case 0xba: map_abs(ABS_RUDDER); break; 673 case 0xbb: map_abs(ABS_THROTTLE); break; 674 case 0xc4: map_abs(ABS_GAS); break; 675 case 0xc5: map_abs(ABS_BRAKE); break; 676 case 0xc8: map_abs(ABS_WHEEL); break; 677 default: goto ignore; 678 } 679 break; 680 681 case HID_UP_GENDESK: 682 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 683 switch (usage->hid & 0xf) { 684 case 0x1: map_key_clear(KEY_POWER); break; 685 case 0x2: map_key_clear(KEY_SLEEP); break; 686 case 0x3: map_key_clear(KEY_WAKEUP); break; 687 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 688 case 0x5: map_key_clear(KEY_MENU); break; 689 case 0x6: map_key_clear(KEY_PROG1); break; 690 case 0x7: map_key_clear(KEY_HELP); break; 691 case 0x8: map_key_clear(KEY_EXIT); break; 692 case 0x9: map_key_clear(KEY_SELECT); break; 693 case 0xa: map_key_clear(KEY_RIGHT); break; 694 case 0xb: map_key_clear(KEY_LEFT); break; 695 case 0xc: map_key_clear(KEY_UP); break; 696 case 0xd: map_key_clear(KEY_DOWN); break; 697 case 0xe: map_key_clear(KEY_POWER2); break; 698 case 0xf: map_key_clear(KEY_RESTART); break; 699 default: goto unknown; 700 } 701 break; 702 } 703 704 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */ 705 switch (usage->hid & 0xf) { 706 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break; 707 default: goto ignore; 708 } 709 break; 710 } 711 712 /* 713 * Some lazy vendors declare 255 usages for System Control, 714 * leading to the creation of ABS_X|Y axis and too many others. 715 * It wouldn't be a problem if joydev doesn't consider the 716 * device as a joystick then. 717 */ 718 if (field->application == HID_GD_SYSTEM_CONTROL) 719 goto ignore; 720 721 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 722 switch (usage->hid) { 723 case HID_GD_UP: usage->hat_dir = 1; break; 724 case HID_GD_DOWN: usage->hat_dir = 5; break; 725 case HID_GD_RIGHT: usage->hat_dir = 3; break; 726 case HID_GD_LEFT: usage->hat_dir = 7; break; 727 default: goto unknown; 728 } 729 if (field->dpad) { 730 map_abs(field->dpad); 731 goto ignore; 732 } 733 map_abs(ABS_HAT0X); 734 break; 735 } 736 737 switch (usage->hid) { 738 /* These usage IDs map directly to the usage codes. */ 739 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 740 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 741 if (field->flags & HID_MAIN_ITEM_RELATIVE) 742 map_rel(usage->hid & 0xf); 743 else 744 map_abs_clear(usage->hid & 0xf); 745 break; 746 747 case HID_GD_WHEEL: 748 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 749 set_bit(REL_WHEEL, input->relbit); 750 map_rel(REL_WHEEL_HI_RES); 751 } else { 752 map_abs(usage->hid & 0xf); 753 } 754 break; 755 case HID_GD_SLIDER: case HID_GD_DIAL: 756 if (field->flags & HID_MAIN_ITEM_RELATIVE) 757 map_rel(usage->hid & 0xf); 758 else 759 map_abs(usage->hid & 0xf); 760 break; 761 762 case HID_GD_HATSWITCH: 763 usage->hat_min = field->logical_minimum; 764 usage->hat_max = field->logical_maximum; 765 map_abs(ABS_HAT0X); 766 break; 767 768 case HID_GD_START: map_key_clear(BTN_START); break; 769 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 770 771 case HID_GD_RFKILL_BTN: 772 /* MS wireless radio ctl extension, also check CA */ 773 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 774 map_key_clear(KEY_RFKILL); 775 /* We need to simulate the btn release */ 776 field->flags |= HID_MAIN_ITEM_RELATIVE; 777 break; 778 } 779 goto unknown; 780 781 default: goto unknown; 782 } 783 784 break; 785 786 case HID_UP_LED: 787 switch (usage->hid & 0xffff) { /* HID-Value: */ 788 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 789 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 790 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 791 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 792 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 793 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 794 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 795 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 796 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 797 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 798 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 799 800 default: goto ignore; 801 } 802 break; 803 804 case HID_UP_DIGITIZER: 805 if ((field->application & 0xff) == 0x01) /* Digitizer */ 806 __set_bit(INPUT_PROP_POINTER, input->propbit); 807 else if ((field->application & 0xff) == 0x02) /* Pen */ 808 __set_bit(INPUT_PROP_DIRECT, input->propbit); 809 810 switch (usage->hid & 0xff) { 811 case 0x00: /* Undefined */ 812 goto ignore; 813 814 case 0x30: /* TipPressure */ 815 if (!test_bit(BTN_TOUCH, input->keybit)) { 816 device->quirks |= HID_QUIRK_NOTOUCH; 817 set_bit(EV_KEY, input->evbit); 818 set_bit(BTN_TOUCH, input->keybit); 819 } 820 map_abs_clear(ABS_PRESSURE); 821 break; 822 823 case 0x32: /* InRange */ 824 switch (field->physical & 0xff) { 825 case 0x21: map_key(BTN_TOOL_MOUSE); break; 826 case 0x22: map_key(BTN_TOOL_FINGER); break; 827 default: map_key(BTN_TOOL_PEN); break; 828 } 829 break; 830 831 case 0x3b: /* Battery Strength */ 832 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false); 833 usage->type = EV_PWR; 834 return; 835 836 case 0x3c: /* Invert */ 837 map_key_clear(BTN_TOOL_RUBBER); 838 break; 839 840 case 0x3d: /* X Tilt */ 841 map_abs_clear(ABS_TILT_X); 842 break; 843 844 case 0x3e: /* Y Tilt */ 845 map_abs_clear(ABS_TILT_Y); 846 break; 847 848 case 0x33: /* Touch */ 849 case 0x42: /* TipSwitch */ 850 case 0x43: /* TipSwitch2 */ 851 device->quirks &= ~HID_QUIRK_NOTOUCH; 852 map_key_clear(BTN_TOUCH); 853 break; 854 855 case 0x44: /* BarrelSwitch */ 856 map_key_clear(BTN_STYLUS); 857 break; 858 859 case 0x45: /* ERASER */ 860 /* 861 * This event is reported when eraser tip touches the surface. 862 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when 863 * tool gets in proximity. 864 */ 865 map_key_clear(BTN_TOUCH); 866 break; 867 868 case 0x46: /* TabletPick */ 869 case 0x5a: /* SecondaryBarrelSwitch */ 870 map_key_clear(BTN_STYLUS2); 871 break; 872 873 case 0x5b: /* TransducerSerialNumber */ 874 case 0x6e: /* TransducerSerialNumber2 */ 875 usage->type = EV_MSC; 876 usage->code = MSC_SERIAL; 877 bit = input->mscbit; 878 max = MSC_MAX; 879 break; 880 881 default: goto unknown; 882 } 883 break; 884 885 case HID_UP_TELEPHONY: 886 switch (usage->hid & HID_USAGE) { 887 case 0x2f: map_key_clear(KEY_MICMUTE); break; 888 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 889 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 890 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 891 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 892 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 893 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 894 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 895 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 896 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 897 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 898 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 899 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 900 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 901 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 902 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 903 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 904 default: goto ignore; 905 } 906 break; 907 908 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 909 switch (usage->hid & HID_USAGE) { 910 case 0x000: goto ignore; 911 case 0x030: map_key_clear(KEY_POWER); break; 912 case 0x031: map_key_clear(KEY_RESTART); break; 913 case 0x032: map_key_clear(KEY_SLEEP); break; 914 case 0x034: map_key_clear(KEY_SLEEP); break; 915 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 916 case 0x036: map_key_clear(BTN_MISC); break; 917 918 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 919 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 920 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 921 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 922 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 923 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 924 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 925 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 926 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 927 928 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 929 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 930 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 931 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 932 case 0x069: map_key_clear(KEY_RED); break; 933 case 0x06a: map_key_clear(KEY_GREEN); break; 934 case 0x06b: map_key_clear(KEY_BLUE); break; 935 case 0x06c: map_key_clear(KEY_YELLOW); break; 936 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break; 937 938 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 939 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 940 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 941 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 942 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 943 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 944 945 case 0x079: map_key_clear(KEY_KBDILLUMUP); break; 946 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break; 947 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break; 948 949 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 950 case 0x083: map_key_clear(KEY_LAST); break; 951 case 0x084: map_key_clear(KEY_ENTER); break; 952 case 0x088: map_key_clear(KEY_PC); break; 953 case 0x089: map_key_clear(KEY_TV); break; 954 case 0x08a: map_key_clear(KEY_WWW); break; 955 case 0x08b: map_key_clear(KEY_DVD); break; 956 case 0x08c: map_key_clear(KEY_PHONE); break; 957 case 0x08d: map_key_clear(KEY_PROGRAM); break; 958 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 959 case 0x08f: map_key_clear(KEY_GAMES); break; 960 case 0x090: map_key_clear(KEY_MEMO); break; 961 case 0x091: map_key_clear(KEY_CD); break; 962 case 0x092: map_key_clear(KEY_VCR); break; 963 case 0x093: map_key_clear(KEY_TUNER); break; 964 case 0x094: map_key_clear(KEY_EXIT); break; 965 case 0x095: map_key_clear(KEY_HELP); break; 966 case 0x096: map_key_clear(KEY_TAPE); break; 967 case 0x097: map_key_clear(KEY_TV2); break; 968 case 0x098: map_key_clear(KEY_SAT); break; 969 case 0x09a: map_key_clear(KEY_PVR); break; 970 971 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 972 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 973 case 0x0a0: map_key_clear(KEY_VCR2); break; 974 975 case 0x0b0: map_key_clear(KEY_PLAY); break; 976 case 0x0b1: map_key_clear(KEY_PAUSE); break; 977 case 0x0b2: map_key_clear(KEY_RECORD); break; 978 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 979 case 0x0b4: map_key_clear(KEY_REWIND); break; 980 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 981 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 982 case 0x0b7: map_key_clear(KEY_STOPCD); break; 983 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 984 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 985 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 986 case 0x0bf: map_key_clear(KEY_SLOW); break; 987 988 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 989 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 990 991 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break; 992 993 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 994 case 0x0e2: map_key_clear(KEY_MUTE); break; 995 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 996 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 997 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 998 case 0x0f5: map_key_clear(KEY_SLOW); break; 999 1000 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 1001 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 1002 case 0x183: map_key_clear(KEY_CONFIG); break; 1003 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 1004 case 0x185: map_key_clear(KEY_EDITOR); break; 1005 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 1006 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 1007 case 0x188: map_key_clear(KEY_PRESENTATION); break; 1008 case 0x189: map_key_clear(KEY_DATABASE); break; 1009 case 0x18a: map_key_clear(KEY_MAIL); break; 1010 case 0x18b: map_key_clear(KEY_NEWS); break; 1011 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 1012 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 1013 case 0x18e: map_key_clear(KEY_CALENDAR); break; 1014 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 1015 case 0x190: map_key_clear(KEY_JOURNAL); break; 1016 case 0x191: map_key_clear(KEY_FINANCE); break; 1017 case 0x192: map_key_clear(KEY_CALC); break; 1018 case 0x193: map_key_clear(KEY_PLAYER); break; 1019 case 0x194: map_key_clear(KEY_FILE); break; 1020 case 0x196: map_key_clear(KEY_WWW); break; 1021 case 0x199: map_key_clear(KEY_CHAT); break; 1022 case 0x19c: map_key_clear(KEY_LOGOFF); break; 1023 case 0x19e: map_key_clear(KEY_COFFEE); break; 1024 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 1025 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 1026 case 0x1a3: map_key_clear(KEY_NEXT); break; 1027 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 1028 case 0x1a6: map_key_clear(KEY_HELP); break; 1029 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 1030 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 1031 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 1032 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 1033 case 0x1b4: map_key_clear(KEY_FILE); break; 1034 case 0x1b6: map_key_clear(KEY_IMAGES); break; 1035 case 0x1b7: map_key_clear(KEY_AUDIO); break; 1036 case 0x1b8: map_key_clear(KEY_VIDEO); break; 1037 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1038 case 0x1bd: map_key_clear(KEY_INFO); break; 1039 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1040 case 0x201: map_key_clear(KEY_NEW); break; 1041 case 0x202: map_key_clear(KEY_OPEN); break; 1042 case 0x203: map_key_clear(KEY_CLOSE); break; 1043 case 0x204: map_key_clear(KEY_EXIT); break; 1044 case 0x207: map_key_clear(KEY_SAVE); break; 1045 case 0x208: map_key_clear(KEY_PRINT); break; 1046 case 0x209: map_key_clear(KEY_PROPS); break; 1047 case 0x21a: map_key_clear(KEY_UNDO); break; 1048 case 0x21b: map_key_clear(KEY_COPY); break; 1049 case 0x21c: map_key_clear(KEY_CUT); break; 1050 case 0x21d: map_key_clear(KEY_PASTE); break; 1051 case 0x21f: map_key_clear(KEY_FIND); break; 1052 case 0x221: map_key_clear(KEY_SEARCH); break; 1053 case 0x222: map_key_clear(KEY_GOTO); break; 1054 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1055 case 0x224: map_key_clear(KEY_BACK); break; 1056 case 0x225: map_key_clear(KEY_FORWARD); break; 1057 case 0x226: map_key_clear(KEY_STOP); break; 1058 case 0x227: map_key_clear(KEY_REFRESH); break; 1059 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1060 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1061 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1062 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1063 case 0x232: map_key_clear(KEY_FULL_SCREEN); break; 1064 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1065 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1066 case 0x238: /* AC Pan */ 1067 set_bit(REL_HWHEEL, input->relbit); 1068 map_rel(REL_HWHEEL_HI_RES); 1069 break; 1070 case 0x23d: map_key_clear(KEY_EDIT); break; 1071 case 0x25f: map_key_clear(KEY_CANCEL); break; 1072 case 0x269: map_key_clear(KEY_INSERT); break; 1073 case 0x26a: map_key_clear(KEY_DELETE); break; 1074 case 0x279: map_key_clear(KEY_REDO); break; 1075 1076 case 0x289: map_key_clear(KEY_REPLY); break; 1077 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1078 case 0x28c: map_key_clear(KEY_SEND); break; 1079 1080 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break; 1081 1082 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1083 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1084 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1085 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1086 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1087 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1088 1089 case 0x29f: map_key_clear(KEY_SCALE); break; 1090 1091 default: map_key_clear(KEY_UNKNOWN); 1092 } 1093 break; 1094 1095 case HID_UP_GENDEVCTRLS: 1096 switch (usage->hid) { 1097 case HID_DC_BATTERYSTRENGTH: 1098 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false); 1099 usage->type = EV_PWR; 1100 return; 1101 } 1102 goto unknown; 1103 1104 case HID_UP_BATTERY: 1105 switch (usage->hid) { 1106 case HID_BAT_ABSOLUTESTATEOFCHARGE: 1107 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true); 1108 usage->type = EV_PWR; 1109 return; 1110 } 1111 goto unknown; 1112 1113 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1114 set_bit(EV_REP, input->evbit); 1115 switch (usage->hid & HID_USAGE) { 1116 case 0x021: map_key_clear(KEY_PRINT); break; 1117 case 0x070: map_key_clear(KEY_HP); break; 1118 case 0x071: map_key_clear(KEY_CAMERA); break; 1119 case 0x072: map_key_clear(KEY_SOUND); break; 1120 case 0x073: map_key_clear(KEY_QUESTION); break; 1121 case 0x080: map_key_clear(KEY_EMAIL); break; 1122 case 0x081: map_key_clear(KEY_CHAT); break; 1123 case 0x082: map_key_clear(KEY_SEARCH); break; 1124 case 0x083: map_key_clear(KEY_CONNECT); break; 1125 case 0x084: map_key_clear(KEY_FINANCE); break; 1126 case 0x085: map_key_clear(KEY_SPORT); break; 1127 case 0x086: map_key_clear(KEY_SHOP); break; 1128 default: goto ignore; 1129 } 1130 break; 1131 1132 case HID_UP_HPVENDOR2: 1133 set_bit(EV_REP, input->evbit); 1134 switch (usage->hid & HID_USAGE) { 1135 case 0x001: map_key_clear(KEY_MICMUTE); break; 1136 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1137 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1138 default: goto ignore; 1139 } 1140 break; 1141 1142 case HID_UP_MSVENDOR: 1143 goto ignore; 1144 1145 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1146 set_bit(EV_REP, input->evbit); 1147 goto ignore; 1148 1149 case HID_UP_LOGIVENDOR: 1150 /* intentional fallback */ 1151 case HID_UP_LOGIVENDOR2: 1152 /* intentional fallback */ 1153 case HID_UP_LOGIVENDOR3: 1154 goto ignore; 1155 1156 case HID_UP_PID: 1157 switch (usage->hid & HID_USAGE) { 1158 case 0xa4: map_key_clear(BTN_DEAD); break; 1159 default: goto ignore; 1160 } 1161 break; 1162 1163 default: 1164 unknown: 1165 if (field->report_size == 1) { 1166 if (field->report->type == HID_OUTPUT_REPORT) { 1167 map_led(LED_MISC); 1168 break; 1169 } 1170 map_key(BTN_MISC); 1171 break; 1172 } 1173 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1174 map_rel(REL_MISC); 1175 break; 1176 } 1177 map_abs(ABS_MISC); 1178 break; 1179 } 1180 1181 mapped: 1182 /* Mapping failed, bail out */ 1183 if (!bit) 1184 return; 1185 1186 if (device->driver->input_mapped && 1187 device->driver->input_mapped(device, hidinput, field, usage, 1188 &bit, &max) < 0) { 1189 /* 1190 * The driver indicated that no further generic handling 1191 * of the usage is desired. 1192 */ 1193 return; 1194 } 1195 1196 set_bit(usage->type, input->evbit); 1197 1198 /* 1199 * This part is *really* controversial: 1200 * - HID aims at being generic so we should do our best to export 1201 * all incoming events 1202 * - HID describes what events are, so there is no reason for ABS_X 1203 * to be mapped to ABS_Y 1204 * - HID is using *_MISC+N as a default value, but nothing prevents 1205 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1206 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1207 * processing) 1208 * 1209 * If devices still want to use this (at their own risk), they will 1210 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1211 * the default should be a reliable mapping. 1212 */ 1213 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1214 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1215 usage->code = find_next_zero_bit(bit, 1216 max + 1, 1217 usage->code); 1218 } else { 1219 device->status |= HID_STAT_DUP_DETECTED; 1220 goto ignore; 1221 } 1222 } 1223 1224 if (usage->code > max) 1225 goto ignore; 1226 1227 if (usage->type == EV_ABS) { 1228 1229 int a = field->logical_minimum; 1230 int b = field->logical_maximum; 1231 1232 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1233 a = field->logical_minimum = 0; 1234 b = field->logical_maximum = 255; 1235 } 1236 1237 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1238 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1239 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1240 1241 input_abs_set_res(input, usage->code, 1242 hidinput_calc_abs_res(field, usage->code)); 1243 1244 /* use a larger default input buffer for MT devices */ 1245 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1246 input_set_events_per_packet(input, 60); 1247 } 1248 1249 if (usage->type == EV_ABS && 1250 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1251 int i; 1252 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1253 input_set_abs_params(input, i, -1, 1, 0, 0); 1254 set_bit(i, input->absbit); 1255 } 1256 if (usage->hat_dir && !field->dpad) 1257 field->dpad = usage->code; 1258 } 1259 1260 /* for those devices which produce Consumer volume usage as relative, 1261 * we emulate pressing volumeup/volumedown appropriate number of times 1262 * in hidinput_hid_event() 1263 */ 1264 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1265 (usage->code == ABS_VOLUME)) { 1266 set_bit(KEY_VOLUMEUP, input->keybit); 1267 set_bit(KEY_VOLUMEDOWN, input->keybit); 1268 } 1269 1270 if (usage->type == EV_KEY) { 1271 set_bit(EV_MSC, input->evbit); 1272 set_bit(MSC_SCAN, input->mscbit); 1273 } 1274 1275 return; 1276 1277 ignore: 1278 usage->type = 0; 1279 usage->code = 0; 1280 } 1281 1282 static void hidinput_handle_scroll(struct hid_usage *usage, 1283 struct input_dev *input, 1284 __s32 value) 1285 { 1286 int code; 1287 int hi_res, lo_res; 1288 1289 if (value == 0) 1290 return; 1291 1292 if (usage->code == REL_WHEEL_HI_RES) 1293 code = REL_WHEEL; 1294 else 1295 code = REL_HWHEEL; 1296 1297 /* 1298 * Windows reports one wheel click as value 120. Where a high-res 1299 * scroll wheel is present, a fraction of 120 is reported instead. 1300 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1301 * adhere to the 120 expectation. 1302 */ 1303 hi_res = value * 120/usage->resolution_multiplier; 1304 1305 usage->wheel_accumulated += hi_res; 1306 lo_res = usage->wheel_accumulated/120; 1307 if (lo_res) 1308 usage->wheel_accumulated -= lo_res * 120; 1309 1310 input_event(input, EV_REL, code, lo_res); 1311 input_event(input, EV_REL, usage->code, hi_res); 1312 } 1313 1314 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1315 { 1316 struct input_dev *input; 1317 unsigned *quirks = &hid->quirks; 1318 1319 if (!usage->type) 1320 return; 1321 1322 if (usage->type == EV_PWR) { 1323 hidinput_update_battery(hid, value); 1324 return; 1325 } 1326 1327 if (!field->hidinput) 1328 return; 1329 1330 input = field->hidinput->input; 1331 1332 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1333 int hat_dir = usage->hat_dir; 1334 if (!hat_dir) 1335 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1336 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1337 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1338 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1339 return; 1340 } 1341 1342 if (usage->hid == HID_DG_INVERT) { 1343 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1344 return; 1345 } 1346 1347 if (usage->hid == HID_DG_INRANGE) { 1348 if (value) { 1349 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1350 return; 1351 } 1352 input_event(input, usage->type, usage->code, 0); 1353 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1354 return; 1355 } 1356 1357 if (usage->hid == HID_DG_TIPPRESSURE && (*quirks & HID_QUIRK_NOTOUCH)) { 1358 int a = field->logical_minimum; 1359 int b = field->logical_maximum; 1360 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1361 } 1362 1363 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1364 dbg_hid("Maximum Effects - %d\n",value); 1365 return; 1366 } 1367 1368 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1369 dbg_hid("PID Pool Report\n"); 1370 return; 1371 } 1372 1373 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1374 return; 1375 1376 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1377 usage->code == REL_HWHEEL_HI_RES)) { 1378 hidinput_handle_scroll(usage, input, value); 1379 return; 1380 } 1381 1382 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1383 (usage->code == ABS_VOLUME)) { 1384 int count = abs(value); 1385 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1386 int i; 1387 1388 for (i = 0; i < count; i++) { 1389 input_event(input, EV_KEY, direction, 1); 1390 input_sync(input); 1391 input_event(input, EV_KEY, direction, 0); 1392 input_sync(input); 1393 } 1394 return; 1395 } 1396 1397 /* 1398 * Ignore out-of-range values as per HID specification, 1399 * section 5.10 and 6.2.25, when NULL state bit is present. 1400 * When it's not, clamp the value to match Microsoft's input 1401 * driver as mentioned in "Required HID usages for digitizers": 1402 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1403 * 1404 * The logical_minimum < logical_maximum check is done so that we 1405 * don't unintentionally discard values sent by devices which 1406 * don't specify logical min and max. 1407 */ 1408 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1409 (field->logical_minimum < field->logical_maximum)) { 1410 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1411 (value < field->logical_minimum || 1412 value > field->logical_maximum)) { 1413 dbg_hid("Ignoring out-of-range value %x\n", value); 1414 return; 1415 } 1416 value = clamp(value, 1417 field->logical_minimum, 1418 field->logical_maximum); 1419 } 1420 1421 /* 1422 * Ignore reports for absolute data if the data didn't change. This is 1423 * not only an optimization but also fixes 'dead' key reports. Some 1424 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1425 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1426 * can only have one of them physically available. The 'dead' keys 1427 * report constant 0. As all map to the same keycode, they'd confuse 1428 * the input layer. If we filter the 'dead' keys on the HID level, we 1429 * skip the keycode translation and only forward real events. 1430 */ 1431 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1432 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1433 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1434 usage->usage_index < field->maxusage && 1435 value == field->value[usage->usage_index]) 1436 return; 1437 1438 /* report the usage code as scancode if the key status has changed */ 1439 if (usage->type == EV_KEY && 1440 (!test_bit(usage->code, input->key)) == value) 1441 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1442 1443 input_event(input, usage->type, usage->code, value); 1444 1445 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1446 usage->type == EV_KEY && value) { 1447 input_sync(input); 1448 input_event(input, usage->type, usage->code, 0); 1449 } 1450 } 1451 1452 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1453 { 1454 struct hid_input *hidinput; 1455 1456 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1457 return; 1458 1459 list_for_each_entry(hidinput, &hid->inputs, list) 1460 input_sync(hidinput->input); 1461 } 1462 EXPORT_SYMBOL_GPL(hidinput_report_event); 1463 1464 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1465 { 1466 struct hid_report *report; 1467 int i, j; 1468 1469 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1470 for (i = 0; i < report->maxfield; i++) { 1471 *field = report->field[i]; 1472 for (j = 0; j < (*field)->maxusage; j++) 1473 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1474 return j; 1475 } 1476 } 1477 return -1; 1478 } 1479 EXPORT_SYMBOL_GPL(hidinput_find_field); 1480 1481 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1482 { 1483 struct hid_report *report; 1484 struct hid_field *field; 1485 int i, j; 1486 1487 list_for_each_entry(report, 1488 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1489 list) { 1490 for (i = 0; i < report->maxfield; i++) { 1491 field = report->field[i]; 1492 for (j = 0; j < field->maxusage; j++) 1493 if (field->usage[j].type == EV_LED) 1494 return field; 1495 } 1496 } 1497 return NULL; 1498 } 1499 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1500 1501 unsigned int hidinput_count_leds(struct hid_device *hid) 1502 { 1503 struct hid_report *report; 1504 struct hid_field *field; 1505 int i, j; 1506 unsigned int count = 0; 1507 1508 list_for_each_entry(report, 1509 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1510 list) { 1511 for (i = 0; i < report->maxfield; i++) { 1512 field = report->field[i]; 1513 for (j = 0; j < field->maxusage; j++) 1514 if (field->usage[j].type == EV_LED && 1515 field->value[j]) 1516 count += 1; 1517 } 1518 } 1519 return count; 1520 } 1521 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1522 1523 static void hidinput_led_worker(struct work_struct *work) 1524 { 1525 struct hid_device *hid = container_of(work, struct hid_device, 1526 led_work); 1527 struct hid_field *field; 1528 struct hid_report *report; 1529 int ret; 1530 u32 len; 1531 __u8 *buf; 1532 1533 field = hidinput_get_led_field(hid); 1534 if (!field) 1535 return; 1536 1537 /* 1538 * field->report is accessed unlocked regarding HID core. So there might 1539 * be another incoming SET-LED request from user-space, which changes 1540 * the LED state while we assemble our outgoing buffer. However, this 1541 * doesn't matter as hid_output_report() correctly converts it into a 1542 * boolean value no matter what information is currently set on the LED 1543 * field (even garbage). So the remote device will always get a valid 1544 * request. 1545 * And in case we send a wrong value, a next led worker is spawned 1546 * for every SET-LED request so the following worker will send the 1547 * correct value, guaranteed! 1548 */ 1549 1550 report = field->report; 1551 1552 /* use custom SET_REPORT request if possible (asynchronous) */ 1553 if (hid->ll_driver->request) 1554 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1555 1556 /* fall back to generic raw-output-report */ 1557 len = hid_report_len(report); 1558 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1559 if (!buf) 1560 return; 1561 1562 hid_output_report(report, buf); 1563 /* synchronous output report */ 1564 ret = hid_hw_output_report(hid, buf, len); 1565 if (ret == -ENOSYS) 1566 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1567 HID_REQ_SET_REPORT); 1568 kfree(buf); 1569 } 1570 1571 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1572 unsigned int code, int value) 1573 { 1574 struct hid_device *hid = input_get_drvdata(dev); 1575 struct hid_field *field; 1576 int offset; 1577 1578 if (type == EV_FF) 1579 return input_ff_event(dev, type, code, value); 1580 1581 if (type != EV_LED) 1582 return -1; 1583 1584 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1585 hid_warn(dev, "event field not found\n"); 1586 return -1; 1587 } 1588 1589 hid_set_field(field, offset, value); 1590 1591 schedule_work(&hid->led_work); 1592 return 0; 1593 } 1594 1595 static int hidinput_open(struct input_dev *dev) 1596 { 1597 struct hid_device *hid = input_get_drvdata(dev); 1598 1599 return hid_hw_open(hid); 1600 } 1601 1602 static void hidinput_close(struct input_dev *dev) 1603 { 1604 struct hid_device *hid = input_get_drvdata(dev); 1605 1606 hid_hw_close(hid); 1607 } 1608 1609 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, 1610 struct hid_report *report, bool use_logical_max) 1611 { 1612 struct hid_usage *usage; 1613 bool update_needed = false; 1614 bool get_report_completed = false; 1615 int i, j; 1616 1617 if (report->maxfield == 0) 1618 return false; 1619 1620 for (i = 0; i < report->maxfield; i++) { 1621 __s32 value = use_logical_max ? 1622 report->field[i]->logical_maximum : 1623 report->field[i]->logical_minimum; 1624 1625 /* There is no good reason for a Resolution 1626 * Multiplier to have a count other than 1. 1627 * Ignore that case. 1628 */ 1629 if (report->field[i]->report_count != 1) 1630 continue; 1631 1632 for (j = 0; j < report->field[i]->maxusage; j++) { 1633 usage = &report->field[i]->usage[j]; 1634 1635 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1636 continue; 1637 1638 /* 1639 * If we have more than one feature within this 1640 * report we need to fill in the bits from the 1641 * others before we can overwrite the ones for the 1642 * Resolution Multiplier. 1643 * 1644 * But if we're not allowed to read from the device, 1645 * we just bail. Such a device should not exist 1646 * anyway. 1647 */ 1648 if (!get_report_completed && report->maxfield > 1) { 1649 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) 1650 return update_needed; 1651 1652 hid_hw_request(hid, report, HID_REQ_GET_REPORT); 1653 hid_hw_wait(hid); 1654 get_report_completed = true; 1655 } 1656 1657 report->field[i]->value[j] = value; 1658 update_needed = true; 1659 } 1660 } 1661 1662 return update_needed; 1663 } 1664 1665 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1666 { 1667 struct hid_report_enum *rep_enum; 1668 struct hid_report *rep; 1669 int ret; 1670 1671 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1672 list_for_each_entry(rep, &rep_enum->report_list, list) { 1673 bool update_needed = __hidinput_change_resolution_multipliers(hid, 1674 rep, true); 1675 1676 if (update_needed) { 1677 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT); 1678 if (ret) { 1679 __hidinput_change_resolution_multipliers(hid, 1680 rep, false); 1681 return; 1682 } 1683 } 1684 } 1685 1686 /* refresh our structs */ 1687 hid_setup_resolution_multiplier(hid); 1688 } 1689 1690 static void report_features(struct hid_device *hid) 1691 { 1692 struct hid_driver *drv = hid->driver; 1693 struct hid_report_enum *rep_enum; 1694 struct hid_report *rep; 1695 struct hid_usage *usage; 1696 int i, j; 1697 1698 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1699 list_for_each_entry(rep, &rep_enum->report_list, list) 1700 for (i = 0; i < rep->maxfield; i++) { 1701 /* Ignore if report count is out of bounds. */ 1702 if (rep->field[i]->report_count < 1) 1703 continue; 1704 1705 for (j = 0; j < rep->field[i]->maxusage; j++) { 1706 usage = &rep->field[i]->usage[j]; 1707 1708 /* Verify if Battery Strength feature is available */ 1709 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1710 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1711 rep->field[i], false); 1712 1713 if (drv->feature_mapping) 1714 drv->feature_mapping(hid, rep->field[i], usage); 1715 } 1716 } 1717 } 1718 1719 static struct hid_input *hidinput_allocate(struct hid_device *hid, 1720 unsigned int application) 1721 { 1722 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1723 struct input_dev *input_dev = input_allocate_device(); 1724 const char *suffix = NULL; 1725 size_t suffix_len, name_len; 1726 1727 if (!hidinput || !input_dev) 1728 goto fail; 1729 1730 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1731 hid->maxapplication > 1) { 1732 switch (application) { 1733 case HID_GD_KEYBOARD: 1734 suffix = "Keyboard"; 1735 break; 1736 case HID_GD_KEYPAD: 1737 suffix = "Keypad"; 1738 break; 1739 case HID_GD_MOUSE: 1740 suffix = "Mouse"; 1741 break; 1742 case HID_DG_STYLUS: 1743 suffix = "Pen"; 1744 break; 1745 case HID_DG_TOUCHSCREEN: 1746 suffix = "Touchscreen"; 1747 break; 1748 case HID_DG_TOUCHPAD: 1749 suffix = "Touchpad"; 1750 break; 1751 case HID_GD_SYSTEM_CONTROL: 1752 suffix = "System Control"; 1753 break; 1754 case HID_CP_CONSUMER_CONTROL: 1755 suffix = "Consumer Control"; 1756 break; 1757 case HID_GD_WIRELESS_RADIO_CTLS: 1758 suffix = "Wireless Radio Control"; 1759 break; 1760 case HID_GD_SYSTEM_MULTIAXIS: 1761 suffix = "System Multi Axis"; 1762 break; 1763 default: 1764 break; 1765 } 1766 } 1767 1768 if (suffix) { 1769 name_len = strlen(hid->name); 1770 suffix_len = strlen(suffix); 1771 if ((name_len < suffix_len) || 1772 strcmp(hid->name + name_len - suffix_len, suffix)) { 1773 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1774 hid->name, suffix); 1775 if (!hidinput->name) 1776 goto fail; 1777 } 1778 } 1779 1780 input_set_drvdata(input_dev, hid); 1781 input_dev->event = hidinput_input_event; 1782 input_dev->open = hidinput_open; 1783 input_dev->close = hidinput_close; 1784 input_dev->setkeycode = hidinput_setkeycode; 1785 input_dev->getkeycode = hidinput_getkeycode; 1786 1787 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1788 input_dev->phys = hid->phys; 1789 input_dev->uniq = hid->uniq; 1790 input_dev->id.bustype = hid->bus; 1791 input_dev->id.vendor = hid->vendor; 1792 input_dev->id.product = hid->product; 1793 input_dev->id.version = hid->version; 1794 input_dev->dev.parent = &hid->dev; 1795 1796 hidinput->input = input_dev; 1797 hidinput->application = application; 1798 list_add_tail(&hidinput->list, &hid->inputs); 1799 1800 INIT_LIST_HEAD(&hidinput->reports); 1801 1802 return hidinput; 1803 1804 fail: 1805 kfree(hidinput); 1806 input_free_device(input_dev); 1807 hid_err(hid, "Out of memory during hid input probe\n"); 1808 return NULL; 1809 } 1810 1811 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1812 { 1813 int i; 1814 unsigned long r = 0; 1815 1816 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1817 r |= hidinput->input->evbit[i]; 1818 1819 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1820 r |= hidinput->input->keybit[i]; 1821 1822 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1823 r |= hidinput->input->relbit[i]; 1824 1825 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1826 r |= hidinput->input->absbit[i]; 1827 1828 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1829 r |= hidinput->input->mscbit[i]; 1830 1831 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1832 r |= hidinput->input->ledbit[i]; 1833 1834 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1835 r |= hidinput->input->sndbit[i]; 1836 1837 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1838 r |= hidinput->input->ffbit[i]; 1839 1840 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1841 r |= hidinput->input->swbit[i]; 1842 1843 return !!r; 1844 } 1845 1846 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1847 struct hid_input *hidinput) 1848 { 1849 struct hid_report *report; 1850 int i, k; 1851 1852 list_del(&hidinput->list); 1853 input_free_device(hidinput->input); 1854 kfree(hidinput->name); 1855 1856 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1857 if (k == HID_OUTPUT_REPORT && 1858 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1859 continue; 1860 1861 list_for_each_entry(report, &hid->report_enum[k].report_list, 1862 list) { 1863 1864 for (i = 0; i < report->maxfield; i++) 1865 if (report->field[i]->hidinput == hidinput) 1866 report->field[i]->hidinput = NULL; 1867 } 1868 } 1869 1870 kfree(hidinput); 1871 } 1872 1873 static struct hid_input *hidinput_match(struct hid_report *report) 1874 { 1875 struct hid_device *hid = report->device; 1876 struct hid_input *hidinput; 1877 1878 list_for_each_entry(hidinput, &hid->inputs, list) { 1879 if (hidinput->report && 1880 hidinput->report->id == report->id) 1881 return hidinput; 1882 } 1883 1884 return NULL; 1885 } 1886 1887 static struct hid_input *hidinput_match_application(struct hid_report *report) 1888 { 1889 struct hid_device *hid = report->device; 1890 struct hid_input *hidinput; 1891 1892 list_for_each_entry(hidinput, &hid->inputs, list) { 1893 if (hidinput->application == report->application) 1894 return hidinput; 1895 1896 /* 1897 * Keep SystemControl and ConsumerControl applications together 1898 * with the main keyboard, if present. 1899 */ 1900 if ((report->application == HID_GD_SYSTEM_CONTROL || 1901 report->application == HID_CP_CONSUMER_CONTROL) && 1902 hidinput->application == HID_GD_KEYBOARD) { 1903 return hidinput; 1904 } 1905 } 1906 1907 return NULL; 1908 } 1909 1910 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1911 struct hid_report *report) 1912 { 1913 int i, j; 1914 1915 for (i = 0; i < report->maxfield; i++) 1916 for (j = 0; j < report->field[i]->maxusage; j++) 1917 hidinput_configure_usage(hidinput, report->field[i], 1918 report->field[i]->usage + j); 1919 } 1920 1921 /* 1922 * Register the input device; print a message. 1923 * Configure the input layer interface 1924 * Read all reports and initialize the absolute field values. 1925 */ 1926 1927 int hidinput_connect(struct hid_device *hid, unsigned int force) 1928 { 1929 struct hid_driver *drv = hid->driver; 1930 struct hid_report *report; 1931 struct hid_input *next, *hidinput = NULL; 1932 unsigned int application; 1933 int i, k; 1934 1935 INIT_LIST_HEAD(&hid->inputs); 1936 INIT_WORK(&hid->led_work, hidinput_led_worker); 1937 1938 hid->status &= ~HID_STAT_DUP_DETECTED; 1939 1940 if (!force) { 1941 for (i = 0; i < hid->maxcollection; i++) { 1942 struct hid_collection *col = &hid->collection[i]; 1943 if (col->type == HID_COLLECTION_APPLICATION || 1944 col->type == HID_COLLECTION_PHYSICAL) 1945 if (IS_INPUT_APPLICATION(col->usage)) 1946 break; 1947 } 1948 1949 if (i == hid->maxcollection) 1950 return -1; 1951 } 1952 1953 report_features(hid); 1954 1955 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1956 if (k == HID_OUTPUT_REPORT && 1957 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1958 continue; 1959 1960 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1961 1962 if (!report->maxfield) 1963 continue; 1964 1965 application = report->application; 1966 1967 /* 1968 * Find the previous hidinput report attached 1969 * to this report id. 1970 */ 1971 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1972 hidinput = hidinput_match(report); 1973 else if (hid->maxapplication > 1 && 1974 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1975 hidinput = hidinput_match_application(report); 1976 1977 if (!hidinput) { 1978 hidinput = hidinput_allocate(hid, application); 1979 if (!hidinput) 1980 goto out_unwind; 1981 } 1982 1983 hidinput_configure_usages(hidinput, report); 1984 1985 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1986 hidinput->report = report; 1987 1988 list_add_tail(&report->hidinput_list, 1989 &hidinput->reports); 1990 } 1991 } 1992 1993 hidinput_change_resolution_multipliers(hid); 1994 1995 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1996 if (drv->input_configured && 1997 drv->input_configured(hid, hidinput)) 1998 goto out_unwind; 1999 2000 if (!hidinput_has_been_populated(hidinput)) { 2001 /* no need to register an input device not populated */ 2002 hidinput_cleanup_hidinput(hid, hidinput); 2003 continue; 2004 } 2005 2006 if (input_register_device(hidinput->input)) 2007 goto out_unwind; 2008 hidinput->registered = true; 2009 } 2010 2011 if (list_empty(&hid->inputs)) { 2012 hid_err(hid, "No inputs registered, leaving\n"); 2013 goto out_unwind; 2014 } 2015 2016 if (hid->status & HID_STAT_DUP_DETECTED) 2017 hid_dbg(hid, 2018 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 2019 2020 return 0; 2021 2022 out_unwind: 2023 /* unwind the ones we already registered */ 2024 hidinput_disconnect(hid); 2025 2026 return -1; 2027 } 2028 EXPORT_SYMBOL_GPL(hidinput_connect); 2029 2030 void hidinput_disconnect(struct hid_device *hid) 2031 { 2032 struct hid_input *hidinput, *next; 2033 2034 hidinput_cleanup_battery(hid); 2035 2036 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 2037 list_del(&hidinput->list); 2038 if (hidinput->registered) 2039 input_unregister_device(hidinput->input); 2040 else 2041 input_free_device(hidinput->input); 2042 kfree(hidinput->name); 2043 kfree(hidinput); 2044 } 2045 2046 /* led_work is spawned by input_dev callbacks, but doesn't access the 2047 * parent input_dev at all. Once all input devices are removed, we 2048 * know that led_work will never get restarted, so we can cancel it 2049 * synchronously and are safe. */ 2050 cancel_work_sync(&hid->led_work); 2051 } 2052 EXPORT_SYMBOL_GPL(hidinput_disconnect); 2053