1 /* 2 * Copyright (c) 2000-2001 Vojtech Pavlik 3 * Copyright (c) 2006-2010 Jiri Kosina 4 * 5 * HID to Linux Input mapping 6 */ 7 8 /* 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 * 23 * Should you need to contact me, the author, you can do so either by 24 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 25 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 26 */ 27 28 #include <linux/module.h> 29 #include <linux/slab.h> 30 #include <linux/kernel.h> 31 32 #include <linux/hid.h> 33 #include <linux/hid-debug.h> 34 35 #include "hid-ids.h" 36 37 #define unk KEY_UNKNOWN 38 39 static const unsigned char hid_keyboard[256] = { 40 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, 41 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, 42 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, 43 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, 44 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, 45 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, 46 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, 47 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, 48 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk, 49 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk, 50 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 51 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk, 52 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 53 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk, 54 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, 55 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk 56 }; 57 58 static const struct { 59 __s32 x; 60 __s32 y; 61 } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; 62 63 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c)) 64 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c)) 65 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c)) 66 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c)) 67 68 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 69 &max, EV_ABS, (c)) 70 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 71 &max, EV_KEY, (c)) 72 73 static bool match_scancode(struct hid_usage *usage, 74 unsigned int cur_idx, unsigned int scancode) 75 { 76 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode; 77 } 78 79 static bool match_keycode(struct hid_usage *usage, 80 unsigned int cur_idx, unsigned int keycode) 81 { 82 /* 83 * We should exclude unmapped usages when doing lookup by keycode. 84 */ 85 return (usage->type == EV_KEY && usage->code == keycode); 86 } 87 88 static bool match_index(struct hid_usage *usage, 89 unsigned int cur_idx, unsigned int idx) 90 { 91 return cur_idx == idx; 92 } 93 94 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage, 95 unsigned int cur_idx, unsigned int val); 96 97 static struct hid_usage *hidinput_find_key(struct hid_device *hid, 98 hid_usage_cmp_t match, 99 unsigned int value, 100 unsigned int *usage_idx) 101 { 102 unsigned int i, j, k, cur_idx = 0; 103 struct hid_report *report; 104 struct hid_usage *usage; 105 106 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 107 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 108 for (i = 0; i < report->maxfield; i++) { 109 for (j = 0; j < report->field[i]->maxusage; j++) { 110 usage = report->field[i]->usage + j; 111 if (usage->type == EV_KEY || usage->type == 0) { 112 if (match(usage, cur_idx, value)) { 113 if (usage_idx) 114 *usage_idx = cur_idx; 115 return usage; 116 } 117 cur_idx++; 118 } 119 } 120 } 121 } 122 } 123 return NULL; 124 } 125 126 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid, 127 const struct input_keymap_entry *ke, 128 unsigned int *index) 129 { 130 struct hid_usage *usage; 131 unsigned int scancode; 132 133 if (ke->flags & INPUT_KEYMAP_BY_INDEX) 134 usage = hidinput_find_key(hid, match_index, ke->index, index); 135 else if (input_scancode_to_scalar(ke, &scancode) == 0) 136 usage = hidinput_find_key(hid, match_scancode, scancode, index); 137 else 138 usage = NULL; 139 140 return usage; 141 } 142 143 static int hidinput_getkeycode(struct input_dev *dev, 144 struct input_keymap_entry *ke) 145 { 146 struct hid_device *hid = input_get_drvdata(dev); 147 struct hid_usage *usage; 148 unsigned int scancode, index; 149 150 usage = hidinput_locate_usage(hid, ke, &index); 151 if (usage) { 152 ke->keycode = usage->type == EV_KEY ? 153 usage->code : KEY_RESERVED; 154 ke->index = index; 155 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE); 156 ke->len = sizeof(scancode); 157 memcpy(ke->scancode, &scancode, sizeof(scancode)); 158 return 0; 159 } 160 161 return -EINVAL; 162 } 163 164 static int hidinput_setkeycode(struct input_dev *dev, 165 const struct input_keymap_entry *ke, 166 unsigned int *old_keycode) 167 { 168 struct hid_device *hid = input_get_drvdata(dev); 169 struct hid_usage *usage; 170 171 usage = hidinput_locate_usage(hid, ke, NULL); 172 if (usage) { 173 *old_keycode = usage->type == EV_KEY ? 174 usage->code : KEY_RESERVED; 175 usage->code = ke->keycode; 176 177 clear_bit(*old_keycode, dev->keybit); 178 set_bit(usage->code, dev->keybit); 179 dbg_hid("Assigned keycode %d to HID usage code %x\n", 180 usage->code, usage->hid); 181 182 /* 183 * Set the keybit for the old keycode if the old keycode is used 184 * by another key 185 */ 186 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL)) 187 set_bit(*old_keycode, dev->keybit); 188 189 return 0; 190 } 191 192 return -EINVAL; 193 } 194 195 196 /** 197 * hidinput_calc_abs_res - calculate an absolute axis resolution 198 * @field: the HID report field to calculate resolution for 199 * @code: axis code 200 * 201 * The formula is: 202 * (logical_maximum - logical_minimum) 203 * resolution = ---------------------------------------------------------- 204 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent 205 * 206 * as seen in the HID specification v1.11 6.2.2.7 Global Items. 207 * 208 * Only exponent 1 length units are processed. Centimeters and inches are 209 * converted to millimeters. Degrees are converted to radians. 210 */ 211 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) 212 { 213 __s32 unit_exponent = field->unit_exponent; 214 __s32 logical_extents = field->logical_maximum - 215 field->logical_minimum; 216 __s32 physical_extents = field->physical_maximum - 217 field->physical_minimum; 218 __s32 prev; 219 220 /* Check if the extents are sane */ 221 if (logical_extents <= 0 || physical_extents <= 0) 222 return 0; 223 224 /* 225 * Verify and convert units. 226 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding 227 */ 228 switch (code) { 229 case ABS_X: 230 case ABS_Y: 231 case ABS_Z: 232 case ABS_MT_POSITION_X: 233 case ABS_MT_POSITION_Y: 234 case ABS_MT_TOOL_X: 235 case ABS_MT_TOOL_Y: 236 case ABS_MT_TOUCH_MAJOR: 237 case ABS_MT_TOUCH_MINOR: 238 if (field->unit == 0x11) { /* If centimeters */ 239 /* Convert to millimeters */ 240 unit_exponent += 1; 241 } else if (field->unit == 0x13) { /* If inches */ 242 /* Convert to millimeters */ 243 prev = physical_extents; 244 physical_extents *= 254; 245 if (physical_extents < prev) 246 return 0; 247 unit_exponent -= 1; 248 } else { 249 return 0; 250 } 251 break; 252 253 case ABS_RX: 254 case ABS_RY: 255 case ABS_RZ: 256 case ABS_WHEEL: 257 case ABS_TILT_X: 258 case ABS_TILT_Y: 259 if (field->unit == 0x14) { /* If degrees */ 260 /* Convert to radians */ 261 prev = logical_extents; 262 logical_extents *= 573; 263 if (logical_extents < prev) 264 return 0; 265 unit_exponent += 1; 266 } else if (field->unit != 0x12) { /* If not radians */ 267 return 0; 268 } 269 break; 270 271 default: 272 return 0; 273 } 274 275 /* Apply negative unit exponent */ 276 for (; unit_exponent < 0; unit_exponent++) { 277 prev = logical_extents; 278 logical_extents *= 10; 279 if (logical_extents < prev) 280 return 0; 281 } 282 /* Apply positive unit exponent */ 283 for (; unit_exponent > 0; unit_exponent--) { 284 prev = physical_extents; 285 physical_extents *= 10; 286 if (physical_extents < prev) 287 return 0; 288 } 289 290 /* Calculate resolution */ 291 return DIV_ROUND_CLOSEST(logical_extents, physical_extents); 292 } 293 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res); 294 295 #ifdef CONFIG_HID_BATTERY_STRENGTH 296 static enum power_supply_property hidinput_battery_props[] = { 297 POWER_SUPPLY_PROP_PRESENT, 298 POWER_SUPPLY_PROP_ONLINE, 299 POWER_SUPPLY_PROP_CAPACITY, 300 POWER_SUPPLY_PROP_MODEL_NAME, 301 POWER_SUPPLY_PROP_STATUS, 302 POWER_SUPPLY_PROP_SCOPE, 303 }; 304 305 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */ 306 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */ 307 #define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */ 308 309 static const struct hid_device_id hid_battery_quirks[] = { 310 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 311 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO), 312 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 313 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 314 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI), 315 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 316 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 317 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI), 318 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 319 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 320 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO), 321 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 322 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 323 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI), 324 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 325 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, 326 USB_DEVICE_ID_ELECOM_BM084), 327 HID_BATTERY_QUIRK_IGNORE }, 328 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL, 329 USB_DEVICE_ID_SYMBOL_SCANNER_3), 330 HID_BATTERY_QUIRK_IGNORE }, 331 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK, 332 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), 333 HID_BATTERY_QUIRK_IGNORE }, 334 {} 335 }; 336 337 static unsigned find_battery_quirk(struct hid_device *hdev) 338 { 339 unsigned quirks = 0; 340 const struct hid_device_id *match; 341 342 match = hid_match_id(hdev, hid_battery_quirks); 343 if (match != NULL) 344 quirks = match->driver_data; 345 346 return quirks; 347 } 348 349 static int hidinput_scale_battery_capacity(struct hid_device *dev, 350 int value) 351 { 352 if (dev->battery_min < dev->battery_max && 353 value >= dev->battery_min && value <= dev->battery_max) 354 value = ((value - dev->battery_min) * 100) / 355 (dev->battery_max - dev->battery_min); 356 357 return value; 358 } 359 360 static int hidinput_query_battery_capacity(struct hid_device *dev) 361 { 362 u8 *buf; 363 int ret; 364 365 buf = kmalloc(2, GFP_KERNEL); 366 if (!buf) 367 return -ENOMEM; 368 369 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2, 370 dev->battery_report_type, HID_REQ_GET_REPORT); 371 if (ret != 2) { 372 kfree(buf); 373 return -ENODATA; 374 } 375 376 ret = hidinput_scale_battery_capacity(dev, buf[1]); 377 kfree(buf); 378 return ret; 379 } 380 381 static int hidinput_get_battery_property(struct power_supply *psy, 382 enum power_supply_property prop, 383 union power_supply_propval *val) 384 { 385 struct hid_device *dev = power_supply_get_drvdata(psy); 386 int value; 387 int ret = 0; 388 389 switch (prop) { 390 case POWER_SUPPLY_PROP_PRESENT: 391 case POWER_SUPPLY_PROP_ONLINE: 392 val->intval = 1; 393 break; 394 395 case POWER_SUPPLY_PROP_CAPACITY: 396 if (dev->battery_status != HID_BATTERY_REPORTED && 397 !dev->battery_avoid_query) { 398 value = hidinput_query_battery_capacity(dev); 399 if (value < 0) 400 return value; 401 } else { 402 value = dev->battery_capacity; 403 } 404 405 val->intval = value; 406 break; 407 408 case POWER_SUPPLY_PROP_MODEL_NAME: 409 val->strval = dev->name; 410 break; 411 412 case POWER_SUPPLY_PROP_STATUS: 413 if (dev->battery_status != HID_BATTERY_REPORTED && 414 !dev->battery_avoid_query) { 415 value = hidinput_query_battery_capacity(dev); 416 if (value < 0) 417 return value; 418 419 dev->battery_capacity = value; 420 dev->battery_status = HID_BATTERY_QUERIED; 421 } 422 423 if (dev->battery_status == HID_BATTERY_UNKNOWN) 424 val->intval = POWER_SUPPLY_STATUS_UNKNOWN; 425 else if (dev->battery_capacity == 100) 426 val->intval = POWER_SUPPLY_STATUS_FULL; 427 else 428 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 429 break; 430 431 case POWER_SUPPLY_PROP_SCOPE: 432 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 433 break; 434 435 default: 436 ret = -EINVAL; 437 break; 438 } 439 440 return ret; 441 } 442 443 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field) 444 { 445 struct power_supply_desc *psy_desc; 446 struct power_supply_config psy_cfg = { .drv_data = dev, }; 447 unsigned quirks; 448 s32 min, max; 449 int error; 450 451 if (dev->battery) 452 return 0; /* already initialized? */ 453 454 quirks = find_battery_quirk(dev); 455 456 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 457 dev->bus, dev->vendor, dev->product, dev->version, quirks); 458 459 if (quirks & HID_BATTERY_QUIRK_IGNORE) 460 return 0; 461 462 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); 463 if (!psy_desc) 464 return -ENOMEM; 465 466 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", 467 strlen(dev->uniq) ? 468 dev->uniq : dev_name(&dev->dev)); 469 if (!psy_desc->name) { 470 error = -ENOMEM; 471 goto err_free_mem; 472 } 473 474 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 475 psy_desc->properties = hidinput_battery_props; 476 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); 477 psy_desc->use_for_apm = 0; 478 psy_desc->get_property = hidinput_get_battery_property; 479 480 min = field->logical_minimum; 481 max = field->logical_maximum; 482 483 if (quirks & HID_BATTERY_QUIRK_PERCENT) { 484 min = 0; 485 max = 100; 486 } 487 488 if (quirks & HID_BATTERY_QUIRK_FEATURE) 489 report_type = HID_FEATURE_REPORT; 490 491 dev->battery_min = min; 492 dev->battery_max = max; 493 dev->battery_report_type = report_type; 494 dev->battery_report_id = field->report->id; 495 496 /* 497 * Stylus is normally not connected to the device and thus we 498 * can't query the device and get meaningful battery strength. 499 * We have to wait for the device to report it on its own. 500 */ 501 dev->battery_avoid_query = report_type == HID_INPUT_REPORT && 502 field->physical == HID_DG_STYLUS; 503 504 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); 505 if (IS_ERR(dev->battery)) { 506 error = PTR_ERR(dev->battery); 507 hid_warn(dev, "can't register power supply: %d\n", error); 508 goto err_free_name; 509 } 510 511 power_supply_powers(dev->battery, &dev->dev); 512 return 0; 513 514 err_free_name: 515 kfree(psy_desc->name); 516 err_free_mem: 517 kfree(psy_desc); 518 dev->battery = NULL; 519 return error; 520 } 521 522 static void hidinput_cleanup_battery(struct hid_device *dev) 523 { 524 const struct power_supply_desc *psy_desc; 525 526 if (!dev->battery) 527 return; 528 529 psy_desc = dev->battery->desc; 530 power_supply_unregister(dev->battery); 531 kfree(psy_desc->name); 532 kfree(psy_desc); 533 dev->battery = NULL; 534 } 535 536 static void hidinput_update_battery(struct hid_device *dev, int value) 537 { 538 int capacity; 539 540 if (!dev->battery) 541 return; 542 543 if (value == 0 || value < dev->battery_min || value > dev->battery_max) 544 return; 545 546 capacity = hidinput_scale_battery_capacity(dev, value); 547 548 if (dev->battery_status != HID_BATTERY_REPORTED || 549 capacity != dev->battery_capacity) { 550 dev->battery_capacity = capacity; 551 dev->battery_status = HID_BATTERY_REPORTED; 552 power_supply_changed(dev->battery); 553 } 554 } 555 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 556 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 557 struct hid_field *field) 558 { 559 return 0; 560 } 561 562 static void hidinput_cleanup_battery(struct hid_device *dev) 563 { 564 } 565 566 static void hidinput_update_battery(struct hid_device *dev, int value) 567 { 568 } 569 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 570 571 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 572 struct hid_usage *usage) 573 { 574 struct input_dev *input = hidinput->input; 575 struct hid_device *device = input_get_drvdata(input); 576 int max = 0, code; 577 unsigned long *bit = NULL; 578 579 field->hidinput = hidinput; 580 581 if (field->flags & HID_MAIN_ITEM_CONSTANT) 582 goto ignore; 583 584 /* Ignore if report count is out of bounds. */ 585 if (field->report_count < 1) 586 goto ignore; 587 588 /* only LED usages are supported in output fields */ 589 if (field->report_type == HID_OUTPUT_REPORT && 590 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 591 goto ignore; 592 } 593 594 if (device->driver->input_mapping) { 595 int ret = device->driver->input_mapping(device, hidinput, field, 596 usage, &bit, &max); 597 if (ret > 0) 598 goto mapped; 599 if (ret < 0) 600 goto ignore; 601 } 602 603 switch (usage->hid & HID_USAGE_PAGE) { 604 case HID_UP_UNDEFINED: 605 goto ignore; 606 607 case HID_UP_KEYBOARD: 608 set_bit(EV_REP, input->evbit); 609 610 if ((usage->hid & HID_USAGE) < 256) { 611 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 612 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 613 } else 614 map_key(KEY_UNKNOWN); 615 616 break; 617 618 case HID_UP_BUTTON: 619 code = ((usage->hid - 1) & HID_USAGE); 620 621 switch (field->application) { 622 case HID_GD_MOUSE: 623 case HID_GD_POINTER: code += BTN_MOUSE; break; 624 case HID_GD_JOYSTICK: 625 if (code <= 0xf) 626 code += BTN_JOYSTICK; 627 else 628 code += BTN_TRIGGER_HAPPY - 0x10; 629 break; 630 case HID_GD_GAMEPAD: 631 if (code <= 0xf) 632 code += BTN_GAMEPAD; 633 else 634 code += BTN_TRIGGER_HAPPY - 0x10; 635 break; 636 default: 637 switch (field->physical) { 638 case HID_GD_MOUSE: 639 case HID_GD_POINTER: code += BTN_MOUSE; break; 640 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 641 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 642 default: code += BTN_MISC; 643 } 644 } 645 646 map_key(code); 647 break; 648 649 case HID_UP_SIMULATION: 650 switch (usage->hid & 0xffff) { 651 case 0xba: map_abs(ABS_RUDDER); break; 652 case 0xbb: map_abs(ABS_THROTTLE); break; 653 case 0xc4: map_abs(ABS_GAS); break; 654 case 0xc5: map_abs(ABS_BRAKE); break; 655 case 0xc8: map_abs(ABS_WHEEL); break; 656 default: goto ignore; 657 } 658 break; 659 660 case HID_UP_GENDESK: 661 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 662 switch (usage->hid & 0xf) { 663 case 0x1: map_key_clear(KEY_POWER); break; 664 case 0x2: map_key_clear(KEY_SLEEP); break; 665 case 0x3: map_key_clear(KEY_WAKEUP); break; 666 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 667 case 0x5: map_key_clear(KEY_MENU); break; 668 case 0x6: map_key_clear(KEY_PROG1); break; 669 case 0x7: map_key_clear(KEY_HELP); break; 670 case 0x8: map_key_clear(KEY_EXIT); break; 671 case 0x9: map_key_clear(KEY_SELECT); break; 672 case 0xa: map_key_clear(KEY_RIGHT); break; 673 case 0xb: map_key_clear(KEY_LEFT); break; 674 case 0xc: map_key_clear(KEY_UP); break; 675 case 0xd: map_key_clear(KEY_DOWN); break; 676 case 0xe: map_key_clear(KEY_POWER2); break; 677 case 0xf: map_key_clear(KEY_RESTART); break; 678 default: goto unknown; 679 } 680 break; 681 } 682 683 /* 684 * Some lazy vendors declare 255 usages for System Control, 685 * leading to the creation of ABS_X|Y axis and too many others. 686 * It wouldn't be a problem if joydev doesn't consider the 687 * device as a joystick then. 688 */ 689 if (field->application == HID_GD_SYSTEM_CONTROL) 690 goto ignore; 691 692 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 693 switch (usage->hid) { 694 case HID_GD_UP: usage->hat_dir = 1; break; 695 case HID_GD_DOWN: usage->hat_dir = 5; break; 696 case HID_GD_RIGHT: usage->hat_dir = 3; break; 697 case HID_GD_LEFT: usage->hat_dir = 7; break; 698 default: goto unknown; 699 } 700 if (field->dpad) { 701 map_abs(field->dpad); 702 goto ignore; 703 } 704 map_abs(ABS_HAT0X); 705 break; 706 } 707 708 switch (usage->hid) { 709 /* These usage IDs map directly to the usage codes. */ 710 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 711 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 712 if (field->flags & HID_MAIN_ITEM_RELATIVE) 713 map_rel(usage->hid & 0xf); 714 else 715 map_abs_clear(usage->hid & 0xf); 716 break; 717 718 case HID_GD_WHEEL: 719 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 720 set_bit(REL_WHEEL, input->relbit); 721 map_rel(REL_WHEEL_HI_RES); 722 } else { 723 map_abs(usage->hid & 0xf); 724 } 725 break; 726 case HID_GD_SLIDER: case HID_GD_DIAL: 727 if (field->flags & HID_MAIN_ITEM_RELATIVE) 728 map_rel(usage->hid & 0xf); 729 else 730 map_abs(usage->hid & 0xf); 731 break; 732 733 case HID_GD_HATSWITCH: 734 usage->hat_min = field->logical_minimum; 735 usage->hat_max = field->logical_maximum; 736 map_abs(ABS_HAT0X); 737 break; 738 739 case HID_GD_START: map_key_clear(BTN_START); break; 740 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 741 742 case HID_GD_RFKILL_BTN: 743 /* MS wireless radio ctl extension, also check CA */ 744 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 745 map_key_clear(KEY_RFKILL); 746 /* We need to simulate the btn release */ 747 field->flags |= HID_MAIN_ITEM_RELATIVE; 748 break; 749 } 750 751 default: goto unknown; 752 } 753 754 break; 755 756 case HID_UP_LED: 757 switch (usage->hid & 0xffff) { /* HID-Value: */ 758 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 759 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 760 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 761 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 762 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 763 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 764 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 765 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 766 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 767 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 768 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 769 770 default: goto ignore; 771 } 772 break; 773 774 case HID_UP_DIGITIZER: 775 if ((field->application & 0xff) == 0x01) /* Digitizer */ 776 __set_bit(INPUT_PROP_POINTER, input->propbit); 777 else if ((field->application & 0xff) == 0x02) /* Pen */ 778 __set_bit(INPUT_PROP_DIRECT, input->propbit); 779 780 switch (usage->hid & 0xff) { 781 case 0x00: /* Undefined */ 782 goto ignore; 783 784 case 0x30: /* TipPressure */ 785 if (!test_bit(BTN_TOUCH, input->keybit)) { 786 device->quirks |= HID_QUIRK_NOTOUCH; 787 set_bit(EV_KEY, input->evbit); 788 set_bit(BTN_TOUCH, input->keybit); 789 } 790 map_abs_clear(ABS_PRESSURE); 791 break; 792 793 case 0x32: /* InRange */ 794 switch (field->physical & 0xff) { 795 case 0x21: map_key(BTN_TOOL_MOUSE); break; 796 case 0x22: map_key(BTN_TOOL_FINGER); break; 797 default: map_key(BTN_TOOL_PEN); break; 798 } 799 break; 800 801 case 0x3b: /* Battery Strength */ 802 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 803 usage->type = EV_PWR; 804 goto ignore; 805 806 case 0x3c: /* Invert */ 807 map_key_clear(BTN_TOOL_RUBBER); 808 break; 809 810 case 0x3d: /* X Tilt */ 811 map_abs_clear(ABS_TILT_X); 812 break; 813 814 case 0x3e: /* Y Tilt */ 815 map_abs_clear(ABS_TILT_Y); 816 break; 817 818 case 0x33: /* Touch */ 819 case 0x42: /* TipSwitch */ 820 case 0x43: /* TipSwitch2 */ 821 device->quirks &= ~HID_QUIRK_NOTOUCH; 822 map_key_clear(BTN_TOUCH); 823 break; 824 825 case 0x44: /* BarrelSwitch */ 826 map_key_clear(BTN_STYLUS); 827 break; 828 829 case 0x45: /* ERASER */ 830 /* 831 * This event is reported when eraser tip touches the surface. 832 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when 833 * tool gets in proximity. 834 */ 835 map_key_clear(BTN_TOUCH); 836 break; 837 838 case 0x46: /* TabletPick */ 839 case 0x5a: /* SecondaryBarrelSwitch */ 840 map_key_clear(BTN_STYLUS2); 841 break; 842 843 case 0x5b: /* TransducerSerialNumber */ 844 usage->type = EV_MSC; 845 usage->code = MSC_SERIAL; 846 bit = input->mscbit; 847 max = MSC_MAX; 848 break; 849 850 default: goto unknown; 851 } 852 break; 853 854 case HID_UP_TELEPHONY: 855 switch (usage->hid & HID_USAGE) { 856 case 0x2f: map_key_clear(KEY_MICMUTE); break; 857 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 858 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 859 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 860 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 861 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 862 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 863 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 864 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 865 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 866 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 867 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 868 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 869 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 870 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 871 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 872 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 873 default: goto ignore; 874 } 875 break; 876 877 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 878 switch (usage->hid & HID_USAGE) { 879 case 0x000: goto ignore; 880 case 0x030: map_key_clear(KEY_POWER); break; 881 case 0x031: map_key_clear(KEY_RESTART); break; 882 case 0x032: map_key_clear(KEY_SLEEP); break; 883 case 0x034: map_key_clear(KEY_SLEEP); break; 884 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 885 case 0x036: map_key_clear(BTN_MISC); break; 886 887 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 888 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 889 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 890 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 891 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 892 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 893 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 894 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 895 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 896 897 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 898 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 899 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 900 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 901 case 0x069: map_key_clear(KEY_RED); break; 902 case 0x06a: map_key_clear(KEY_GREEN); break; 903 case 0x06b: map_key_clear(KEY_BLUE); break; 904 case 0x06c: map_key_clear(KEY_YELLOW); break; 905 case 0x06d: map_key_clear(KEY_ZOOM); break; 906 907 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 908 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 909 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 910 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 911 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 912 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 913 914 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 915 case 0x083: map_key_clear(KEY_LAST); break; 916 case 0x084: map_key_clear(KEY_ENTER); break; 917 case 0x088: map_key_clear(KEY_PC); break; 918 case 0x089: map_key_clear(KEY_TV); break; 919 case 0x08a: map_key_clear(KEY_WWW); break; 920 case 0x08b: map_key_clear(KEY_DVD); break; 921 case 0x08c: map_key_clear(KEY_PHONE); break; 922 case 0x08d: map_key_clear(KEY_PROGRAM); break; 923 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 924 case 0x08f: map_key_clear(KEY_GAMES); break; 925 case 0x090: map_key_clear(KEY_MEMO); break; 926 case 0x091: map_key_clear(KEY_CD); break; 927 case 0x092: map_key_clear(KEY_VCR); break; 928 case 0x093: map_key_clear(KEY_TUNER); break; 929 case 0x094: map_key_clear(KEY_EXIT); break; 930 case 0x095: map_key_clear(KEY_HELP); break; 931 case 0x096: map_key_clear(KEY_TAPE); break; 932 case 0x097: map_key_clear(KEY_TV2); break; 933 case 0x098: map_key_clear(KEY_SAT); break; 934 case 0x09a: map_key_clear(KEY_PVR); break; 935 936 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 937 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 938 case 0x0a0: map_key_clear(KEY_VCR2); break; 939 940 case 0x0b0: map_key_clear(KEY_PLAY); break; 941 case 0x0b1: map_key_clear(KEY_PAUSE); break; 942 case 0x0b2: map_key_clear(KEY_RECORD); break; 943 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 944 case 0x0b4: map_key_clear(KEY_REWIND); break; 945 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 946 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 947 case 0x0b7: map_key_clear(KEY_STOPCD); break; 948 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 949 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 950 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 951 case 0x0bf: map_key_clear(KEY_SLOW); break; 952 953 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 954 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 955 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 956 case 0x0e2: map_key_clear(KEY_MUTE); break; 957 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 958 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 959 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 960 case 0x0f5: map_key_clear(KEY_SLOW); break; 961 962 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 963 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 964 case 0x183: map_key_clear(KEY_CONFIG); break; 965 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 966 case 0x185: map_key_clear(KEY_EDITOR); break; 967 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 968 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 969 case 0x188: map_key_clear(KEY_PRESENTATION); break; 970 case 0x189: map_key_clear(KEY_DATABASE); break; 971 case 0x18a: map_key_clear(KEY_MAIL); break; 972 case 0x18b: map_key_clear(KEY_NEWS); break; 973 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 974 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 975 case 0x18e: map_key_clear(KEY_CALENDAR); break; 976 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 977 case 0x190: map_key_clear(KEY_JOURNAL); break; 978 case 0x191: map_key_clear(KEY_FINANCE); break; 979 case 0x192: map_key_clear(KEY_CALC); break; 980 case 0x193: map_key_clear(KEY_PLAYER); break; 981 case 0x194: map_key_clear(KEY_FILE); break; 982 case 0x196: map_key_clear(KEY_WWW); break; 983 case 0x199: map_key_clear(KEY_CHAT); break; 984 case 0x19c: map_key_clear(KEY_LOGOFF); break; 985 case 0x19e: map_key_clear(KEY_COFFEE); break; 986 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 987 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 988 case 0x1a3: map_key_clear(KEY_NEXT); break; 989 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 990 case 0x1a6: map_key_clear(KEY_HELP); break; 991 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 992 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 993 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 994 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 995 case 0x1b4: map_key_clear(KEY_FILE); break; 996 case 0x1b6: map_key_clear(KEY_IMAGES); break; 997 case 0x1b7: map_key_clear(KEY_AUDIO); break; 998 case 0x1b8: map_key_clear(KEY_VIDEO); break; 999 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 1000 case 0x1bd: map_key_clear(KEY_INFO); break; 1001 case 0x1cb: map_key_clear(KEY_ASSISTANT); break; 1002 case 0x201: map_key_clear(KEY_NEW); break; 1003 case 0x202: map_key_clear(KEY_OPEN); break; 1004 case 0x203: map_key_clear(KEY_CLOSE); break; 1005 case 0x204: map_key_clear(KEY_EXIT); break; 1006 case 0x207: map_key_clear(KEY_SAVE); break; 1007 case 0x208: map_key_clear(KEY_PRINT); break; 1008 case 0x209: map_key_clear(KEY_PROPS); break; 1009 case 0x21a: map_key_clear(KEY_UNDO); break; 1010 case 0x21b: map_key_clear(KEY_COPY); break; 1011 case 0x21c: map_key_clear(KEY_CUT); break; 1012 case 0x21d: map_key_clear(KEY_PASTE); break; 1013 case 0x21f: map_key_clear(KEY_FIND); break; 1014 case 0x221: map_key_clear(KEY_SEARCH); break; 1015 case 0x222: map_key_clear(KEY_GOTO); break; 1016 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 1017 case 0x224: map_key_clear(KEY_BACK); break; 1018 case 0x225: map_key_clear(KEY_FORWARD); break; 1019 case 0x226: map_key_clear(KEY_STOP); break; 1020 case 0x227: map_key_clear(KEY_REFRESH); break; 1021 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 1022 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 1023 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 1024 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 1025 case 0x233: map_key_clear(KEY_SCROLLUP); break; 1026 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 1027 case 0x238: /* AC Pan */ 1028 set_bit(REL_HWHEEL, input->relbit); 1029 map_rel(REL_HWHEEL_HI_RES); 1030 break; 1031 case 0x23d: map_key_clear(KEY_EDIT); break; 1032 case 0x25f: map_key_clear(KEY_CANCEL); break; 1033 case 0x269: map_key_clear(KEY_INSERT); break; 1034 case 0x26a: map_key_clear(KEY_DELETE); break; 1035 case 0x279: map_key_clear(KEY_REDO); break; 1036 1037 case 0x289: map_key_clear(KEY_REPLY); break; 1038 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 1039 case 0x28c: map_key_clear(KEY_SEND); break; 1040 1041 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 1042 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 1043 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 1044 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 1045 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 1046 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 1047 1048 default: map_key_clear(KEY_UNKNOWN); 1049 } 1050 break; 1051 1052 case HID_UP_GENDEVCTRLS: 1053 switch (usage->hid) { 1054 case HID_DC_BATTERYSTRENGTH: 1055 hidinput_setup_battery(device, HID_INPUT_REPORT, field); 1056 usage->type = EV_PWR; 1057 goto ignore; 1058 } 1059 goto unknown; 1060 1061 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 1062 set_bit(EV_REP, input->evbit); 1063 switch (usage->hid & HID_USAGE) { 1064 case 0x021: map_key_clear(KEY_PRINT); break; 1065 case 0x070: map_key_clear(KEY_HP); break; 1066 case 0x071: map_key_clear(KEY_CAMERA); break; 1067 case 0x072: map_key_clear(KEY_SOUND); break; 1068 case 0x073: map_key_clear(KEY_QUESTION); break; 1069 case 0x080: map_key_clear(KEY_EMAIL); break; 1070 case 0x081: map_key_clear(KEY_CHAT); break; 1071 case 0x082: map_key_clear(KEY_SEARCH); break; 1072 case 0x083: map_key_clear(KEY_CONNECT); break; 1073 case 0x084: map_key_clear(KEY_FINANCE); break; 1074 case 0x085: map_key_clear(KEY_SPORT); break; 1075 case 0x086: map_key_clear(KEY_SHOP); break; 1076 default: goto ignore; 1077 } 1078 break; 1079 1080 case HID_UP_HPVENDOR2: 1081 set_bit(EV_REP, input->evbit); 1082 switch (usage->hid & HID_USAGE) { 1083 case 0x001: map_key_clear(KEY_MICMUTE); break; 1084 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 1085 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 1086 default: goto ignore; 1087 } 1088 break; 1089 1090 case HID_UP_MSVENDOR: 1091 goto ignore; 1092 1093 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 1094 set_bit(EV_REP, input->evbit); 1095 goto ignore; 1096 1097 case HID_UP_LOGIVENDOR: 1098 /* intentional fallback */ 1099 case HID_UP_LOGIVENDOR2: 1100 /* intentional fallback */ 1101 case HID_UP_LOGIVENDOR3: 1102 goto ignore; 1103 1104 case HID_UP_PID: 1105 switch (usage->hid & HID_USAGE) { 1106 case 0xa4: map_key_clear(BTN_DEAD); break; 1107 default: goto ignore; 1108 } 1109 break; 1110 1111 default: 1112 unknown: 1113 if (field->report_size == 1) { 1114 if (field->report->type == HID_OUTPUT_REPORT) { 1115 map_led(LED_MISC); 1116 break; 1117 } 1118 map_key(BTN_MISC); 1119 break; 1120 } 1121 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1122 map_rel(REL_MISC); 1123 break; 1124 } 1125 map_abs(ABS_MISC); 1126 break; 1127 } 1128 1129 mapped: 1130 if (device->driver->input_mapped && device->driver->input_mapped(device, 1131 hidinput, field, usage, &bit, &max) < 0) 1132 goto ignore; 1133 1134 set_bit(usage->type, input->evbit); 1135 1136 /* 1137 * This part is *really* controversial: 1138 * - HID aims at being generic so we should do our best to export 1139 * all incoming events 1140 * - HID describes what events are, so there is no reason for ABS_X 1141 * to be mapped to ABS_Y 1142 * - HID is using *_MISC+N as a default value, but nothing prevents 1143 * *_MISC+N to overwrite a legitimate even, which confuses userspace 1144 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different 1145 * processing) 1146 * 1147 * If devices still want to use this (at their own risk), they will 1148 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but 1149 * the default should be a reliable mapping. 1150 */ 1151 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 1152 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { 1153 usage->code = find_next_zero_bit(bit, 1154 max + 1, 1155 usage->code); 1156 } else { 1157 device->status |= HID_STAT_DUP_DETECTED; 1158 goto ignore; 1159 } 1160 } 1161 1162 if (usage->code > max) 1163 goto ignore; 1164 1165 if (usage->type == EV_ABS) { 1166 1167 int a = field->logical_minimum; 1168 int b = field->logical_maximum; 1169 1170 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1171 a = field->logical_minimum = 0; 1172 b = field->logical_maximum = 255; 1173 } 1174 1175 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1176 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1177 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1178 1179 input_abs_set_res(input, usage->code, 1180 hidinput_calc_abs_res(field, usage->code)); 1181 1182 /* use a larger default input buffer for MT devices */ 1183 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1184 input_set_events_per_packet(input, 60); 1185 } 1186 1187 if (usage->type == EV_ABS && 1188 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1189 int i; 1190 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1191 input_set_abs_params(input, i, -1, 1, 0, 0); 1192 set_bit(i, input->absbit); 1193 } 1194 if (usage->hat_dir && !field->dpad) 1195 field->dpad = usage->code; 1196 } 1197 1198 /* for those devices which produce Consumer volume usage as relative, 1199 * we emulate pressing volumeup/volumedown appropriate number of times 1200 * in hidinput_hid_event() 1201 */ 1202 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1203 (usage->code == ABS_VOLUME)) { 1204 set_bit(KEY_VOLUMEUP, input->keybit); 1205 set_bit(KEY_VOLUMEDOWN, input->keybit); 1206 } 1207 1208 if (usage->type == EV_KEY) { 1209 set_bit(EV_MSC, input->evbit); 1210 set_bit(MSC_SCAN, input->mscbit); 1211 } 1212 1213 ignore: 1214 return; 1215 1216 } 1217 1218 static void hidinput_handle_scroll(struct hid_usage *usage, 1219 struct input_dev *input, 1220 __s32 value) 1221 { 1222 int code; 1223 int hi_res, lo_res; 1224 1225 if (value == 0) 1226 return; 1227 1228 if (usage->code == REL_WHEEL_HI_RES) 1229 code = REL_WHEEL; 1230 else 1231 code = REL_HWHEEL; 1232 1233 /* 1234 * Windows reports one wheel click as value 120. Where a high-res 1235 * scroll wheel is present, a fraction of 120 is reported instead. 1236 * Our REL_WHEEL_HI_RES axis does the same because all HW must 1237 * adhere to the 120 expectation. 1238 */ 1239 hi_res = value * 120/usage->resolution_multiplier; 1240 1241 usage->wheel_accumulated += hi_res; 1242 lo_res = usage->wheel_accumulated/120; 1243 if (lo_res) 1244 usage->wheel_accumulated -= lo_res * 120; 1245 1246 input_event(input, EV_REL, code, lo_res); 1247 input_event(input, EV_REL, usage->code, hi_res); 1248 } 1249 1250 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1251 { 1252 struct input_dev *input; 1253 unsigned *quirks = &hid->quirks; 1254 1255 if (!usage->type) 1256 return; 1257 1258 if (usage->type == EV_PWR) { 1259 hidinput_update_battery(hid, value); 1260 return; 1261 } 1262 1263 if (!field->hidinput) 1264 return; 1265 1266 input = field->hidinput->input; 1267 1268 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1269 int hat_dir = usage->hat_dir; 1270 if (!hat_dir) 1271 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1272 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1273 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1274 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1275 return; 1276 } 1277 1278 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 1279 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1280 return; 1281 } 1282 1283 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 1284 if (value) { 1285 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1286 return; 1287 } 1288 input_event(input, usage->type, usage->code, 0); 1289 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1290 return; 1291 } 1292 1293 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 1294 int a = field->logical_minimum; 1295 int b = field->logical_maximum; 1296 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1297 } 1298 1299 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1300 dbg_hid("Maximum Effects - %d\n",value); 1301 return; 1302 } 1303 1304 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1305 dbg_hid("PID Pool Report\n"); 1306 return; 1307 } 1308 1309 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1310 return; 1311 1312 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || 1313 usage->code == REL_HWHEEL_HI_RES)) { 1314 hidinput_handle_scroll(usage, input, value); 1315 return; 1316 } 1317 1318 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1319 (usage->code == ABS_VOLUME)) { 1320 int count = abs(value); 1321 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1322 int i; 1323 1324 for (i = 0; i < count; i++) { 1325 input_event(input, EV_KEY, direction, 1); 1326 input_sync(input); 1327 input_event(input, EV_KEY, direction, 0); 1328 input_sync(input); 1329 } 1330 return; 1331 } 1332 1333 /* 1334 * Ignore out-of-range values as per HID specification, 1335 * section 5.10 and 6.2.25, when NULL state bit is present. 1336 * When it's not, clamp the value to match Microsoft's input 1337 * driver as mentioned in "Required HID usages for digitizers": 1338 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1339 * 1340 * The logical_minimum < logical_maximum check is done so that we 1341 * don't unintentionally discard values sent by devices which 1342 * don't specify logical min and max. 1343 */ 1344 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1345 (field->logical_minimum < field->logical_maximum)) { 1346 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1347 (value < field->logical_minimum || 1348 value > field->logical_maximum)) { 1349 dbg_hid("Ignoring out-of-range value %x\n", value); 1350 return; 1351 } 1352 value = clamp(value, 1353 field->logical_minimum, 1354 field->logical_maximum); 1355 } 1356 1357 /* 1358 * Ignore reports for absolute data if the data didn't change. This is 1359 * not only an optimization but also fixes 'dead' key reports. Some 1360 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1361 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1362 * can only have one of them physically available. The 'dead' keys 1363 * report constant 0. As all map to the same keycode, they'd confuse 1364 * the input layer. If we filter the 'dead' keys on the HID level, we 1365 * skip the keycode translation and only forward real events. 1366 */ 1367 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1368 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1369 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1370 usage->usage_index < field->maxusage && 1371 value == field->value[usage->usage_index]) 1372 return; 1373 1374 /* report the usage code as scancode if the key status has changed */ 1375 if (usage->type == EV_KEY && 1376 (!test_bit(usage->code, input->key)) == value) 1377 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1378 1379 input_event(input, usage->type, usage->code, value); 1380 1381 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1382 usage->type == EV_KEY && value) { 1383 input_sync(input); 1384 input_event(input, usage->type, usage->code, 0); 1385 } 1386 } 1387 1388 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1389 { 1390 struct hid_input *hidinput; 1391 1392 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1393 return; 1394 1395 list_for_each_entry(hidinput, &hid->inputs, list) 1396 input_sync(hidinput->input); 1397 } 1398 EXPORT_SYMBOL_GPL(hidinput_report_event); 1399 1400 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1401 { 1402 struct hid_report *report; 1403 int i, j; 1404 1405 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1406 for (i = 0; i < report->maxfield; i++) { 1407 *field = report->field[i]; 1408 for (j = 0; j < (*field)->maxusage; j++) 1409 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1410 return j; 1411 } 1412 } 1413 return -1; 1414 } 1415 EXPORT_SYMBOL_GPL(hidinput_find_field); 1416 1417 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1418 { 1419 struct hid_report *report; 1420 struct hid_field *field; 1421 int i, j; 1422 1423 list_for_each_entry(report, 1424 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1425 list) { 1426 for (i = 0; i < report->maxfield; i++) { 1427 field = report->field[i]; 1428 for (j = 0; j < field->maxusage; j++) 1429 if (field->usage[j].type == EV_LED) 1430 return field; 1431 } 1432 } 1433 return NULL; 1434 } 1435 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1436 1437 unsigned int hidinput_count_leds(struct hid_device *hid) 1438 { 1439 struct hid_report *report; 1440 struct hid_field *field; 1441 int i, j; 1442 unsigned int count = 0; 1443 1444 list_for_each_entry(report, 1445 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1446 list) { 1447 for (i = 0; i < report->maxfield; i++) { 1448 field = report->field[i]; 1449 for (j = 0; j < field->maxusage; j++) 1450 if (field->usage[j].type == EV_LED && 1451 field->value[j]) 1452 count += 1; 1453 } 1454 } 1455 return count; 1456 } 1457 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1458 1459 static void hidinput_led_worker(struct work_struct *work) 1460 { 1461 struct hid_device *hid = container_of(work, struct hid_device, 1462 led_work); 1463 struct hid_field *field; 1464 struct hid_report *report; 1465 int ret; 1466 u32 len; 1467 __u8 *buf; 1468 1469 field = hidinput_get_led_field(hid); 1470 if (!field) 1471 return; 1472 1473 /* 1474 * field->report is accessed unlocked regarding HID core. So there might 1475 * be another incoming SET-LED request from user-space, which changes 1476 * the LED state while we assemble our outgoing buffer. However, this 1477 * doesn't matter as hid_output_report() correctly converts it into a 1478 * boolean value no matter what information is currently set on the LED 1479 * field (even garbage). So the remote device will always get a valid 1480 * request. 1481 * And in case we send a wrong value, a next led worker is spawned 1482 * for every SET-LED request so the following worker will send the 1483 * correct value, guaranteed! 1484 */ 1485 1486 report = field->report; 1487 1488 /* use custom SET_REPORT request if possible (asynchronous) */ 1489 if (hid->ll_driver->request) 1490 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1491 1492 /* fall back to generic raw-output-report */ 1493 len = hid_report_len(report); 1494 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1495 if (!buf) 1496 return; 1497 1498 hid_output_report(report, buf); 1499 /* synchronous output report */ 1500 ret = hid_hw_output_report(hid, buf, len); 1501 if (ret == -ENOSYS) 1502 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1503 HID_REQ_SET_REPORT); 1504 kfree(buf); 1505 } 1506 1507 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1508 unsigned int code, int value) 1509 { 1510 struct hid_device *hid = input_get_drvdata(dev); 1511 struct hid_field *field; 1512 int offset; 1513 1514 if (type == EV_FF) 1515 return input_ff_event(dev, type, code, value); 1516 1517 if (type != EV_LED) 1518 return -1; 1519 1520 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1521 hid_warn(dev, "event field not found\n"); 1522 return -1; 1523 } 1524 1525 hid_set_field(field, offset, value); 1526 1527 schedule_work(&hid->led_work); 1528 return 0; 1529 } 1530 1531 static int hidinput_open(struct input_dev *dev) 1532 { 1533 struct hid_device *hid = input_get_drvdata(dev); 1534 1535 return hid_hw_open(hid); 1536 } 1537 1538 static void hidinput_close(struct input_dev *dev) 1539 { 1540 struct hid_device *hid = input_get_drvdata(dev); 1541 1542 hid_hw_close(hid); 1543 } 1544 1545 static void hidinput_change_resolution_multipliers(struct hid_device *hid) 1546 { 1547 struct hid_report_enum *rep_enum; 1548 struct hid_report *rep; 1549 struct hid_usage *usage; 1550 int i, j; 1551 1552 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1553 list_for_each_entry(rep, &rep_enum->report_list, list) { 1554 bool update_needed = false; 1555 1556 if (rep->maxfield == 0) 1557 continue; 1558 1559 /* 1560 * If we have more than one feature within this report we 1561 * need to fill in the bits from the others before we can 1562 * overwrite the ones for the Resolution Multiplier. 1563 */ 1564 if (rep->maxfield > 1) { 1565 hid_hw_request(hid, rep, HID_REQ_GET_REPORT); 1566 hid_hw_wait(hid); 1567 } 1568 1569 for (i = 0; i < rep->maxfield; i++) { 1570 __s32 logical_max = rep->field[i]->logical_maximum; 1571 1572 /* There is no good reason for a Resolution 1573 * Multiplier to have a count other than 1. 1574 * Ignore that case. 1575 */ 1576 if (rep->field[i]->report_count != 1) 1577 continue; 1578 1579 for (j = 0; j < rep->field[i]->maxusage; j++) { 1580 usage = &rep->field[i]->usage[j]; 1581 1582 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) 1583 continue; 1584 1585 *rep->field[i]->value = logical_max; 1586 update_needed = true; 1587 } 1588 } 1589 if (update_needed) 1590 hid_hw_request(hid, rep, HID_REQ_SET_REPORT); 1591 } 1592 1593 /* refresh our structs */ 1594 hid_setup_resolution_multiplier(hid); 1595 } 1596 1597 static void report_features(struct hid_device *hid) 1598 { 1599 struct hid_driver *drv = hid->driver; 1600 struct hid_report_enum *rep_enum; 1601 struct hid_report *rep; 1602 struct hid_usage *usage; 1603 int i, j; 1604 1605 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1606 list_for_each_entry(rep, &rep_enum->report_list, list) 1607 for (i = 0; i < rep->maxfield; i++) { 1608 /* Ignore if report count is out of bounds. */ 1609 if (rep->field[i]->report_count < 1) 1610 continue; 1611 1612 for (j = 0; j < rep->field[i]->maxusage; j++) { 1613 usage = &rep->field[i]->usage[j]; 1614 1615 /* Verify if Battery Strength feature is available */ 1616 if (usage->hid == HID_DC_BATTERYSTRENGTH) 1617 hidinput_setup_battery(hid, HID_FEATURE_REPORT, 1618 rep->field[i]); 1619 1620 if (drv->feature_mapping) 1621 drv->feature_mapping(hid, rep->field[i], usage); 1622 } 1623 } 1624 } 1625 1626 static struct hid_input *hidinput_allocate(struct hid_device *hid, 1627 unsigned int application) 1628 { 1629 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1630 struct input_dev *input_dev = input_allocate_device(); 1631 const char *suffix = NULL; 1632 size_t suffix_len, name_len; 1633 1634 if (!hidinput || !input_dev) 1635 goto fail; 1636 1637 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && 1638 hid->maxapplication > 1) { 1639 switch (application) { 1640 case HID_GD_KEYBOARD: 1641 suffix = "Keyboard"; 1642 break; 1643 case HID_GD_KEYPAD: 1644 suffix = "Keypad"; 1645 break; 1646 case HID_GD_MOUSE: 1647 suffix = "Mouse"; 1648 break; 1649 case HID_DG_STYLUS: 1650 suffix = "Pen"; 1651 break; 1652 case HID_DG_TOUCHSCREEN: 1653 suffix = "Touchscreen"; 1654 break; 1655 case HID_DG_TOUCHPAD: 1656 suffix = "Touchpad"; 1657 break; 1658 case HID_GD_SYSTEM_CONTROL: 1659 suffix = "System Control"; 1660 break; 1661 case HID_CP_CONSUMER_CONTROL: 1662 suffix = "Consumer Control"; 1663 break; 1664 case HID_GD_WIRELESS_RADIO_CTLS: 1665 suffix = "Wireless Radio Control"; 1666 break; 1667 case HID_GD_SYSTEM_MULTIAXIS: 1668 suffix = "System Multi Axis"; 1669 break; 1670 default: 1671 break; 1672 } 1673 } 1674 1675 if (suffix) { 1676 name_len = strlen(hid->name); 1677 suffix_len = strlen(suffix); 1678 if ((name_len < suffix_len) || 1679 strcmp(hid->name + name_len - suffix_len, suffix)) { 1680 hidinput->name = kasprintf(GFP_KERNEL, "%s %s", 1681 hid->name, suffix); 1682 if (!hidinput->name) 1683 goto fail; 1684 } 1685 } 1686 1687 input_set_drvdata(input_dev, hid); 1688 input_dev->event = hidinput_input_event; 1689 input_dev->open = hidinput_open; 1690 input_dev->close = hidinput_close; 1691 input_dev->setkeycode = hidinput_setkeycode; 1692 input_dev->getkeycode = hidinput_getkeycode; 1693 1694 input_dev->name = hidinput->name ? hidinput->name : hid->name; 1695 input_dev->phys = hid->phys; 1696 input_dev->uniq = hid->uniq; 1697 input_dev->id.bustype = hid->bus; 1698 input_dev->id.vendor = hid->vendor; 1699 input_dev->id.product = hid->product; 1700 input_dev->id.version = hid->version; 1701 input_dev->dev.parent = &hid->dev; 1702 1703 hidinput->input = input_dev; 1704 hidinput->application = application; 1705 list_add_tail(&hidinput->list, &hid->inputs); 1706 1707 INIT_LIST_HEAD(&hidinput->reports); 1708 1709 return hidinput; 1710 1711 fail: 1712 kfree(hidinput); 1713 input_free_device(input_dev); 1714 hid_err(hid, "Out of memory during hid input probe\n"); 1715 return NULL; 1716 } 1717 1718 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1719 { 1720 int i; 1721 unsigned long r = 0; 1722 1723 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1724 r |= hidinput->input->evbit[i]; 1725 1726 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1727 r |= hidinput->input->keybit[i]; 1728 1729 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1730 r |= hidinput->input->relbit[i]; 1731 1732 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1733 r |= hidinput->input->absbit[i]; 1734 1735 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1736 r |= hidinput->input->mscbit[i]; 1737 1738 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1739 r |= hidinput->input->ledbit[i]; 1740 1741 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1742 r |= hidinput->input->sndbit[i]; 1743 1744 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1745 r |= hidinput->input->ffbit[i]; 1746 1747 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1748 r |= hidinput->input->swbit[i]; 1749 1750 return !!r; 1751 } 1752 1753 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1754 struct hid_input *hidinput) 1755 { 1756 struct hid_report *report; 1757 int i, k; 1758 1759 list_del(&hidinput->list); 1760 input_free_device(hidinput->input); 1761 kfree(hidinput->name); 1762 1763 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1764 if (k == HID_OUTPUT_REPORT && 1765 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1766 continue; 1767 1768 list_for_each_entry(report, &hid->report_enum[k].report_list, 1769 list) { 1770 1771 for (i = 0; i < report->maxfield; i++) 1772 if (report->field[i]->hidinput == hidinput) 1773 report->field[i]->hidinput = NULL; 1774 } 1775 } 1776 1777 kfree(hidinput); 1778 } 1779 1780 static struct hid_input *hidinput_match(struct hid_report *report) 1781 { 1782 struct hid_device *hid = report->device; 1783 struct hid_input *hidinput; 1784 1785 list_for_each_entry(hidinput, &hid->inputs, list) { 1786 if (hidinput->report && 1787 hidinput->report->id == report->id) 1788 return hidinput; 1789 } 1790 1791 return NULL; 1792 } 1793 1794 static struct hid_input *hidinput_match_application(struct hid_report *report) 1795 { 1796 struct hid_device *hid = report->device; 1797 struct hid_input *hidinput; 1798 1799 list_for_each_entry(hidinput, &hid->inputs, list) { 1800 if (hidinput->application == report->application) 1801 return hidinput; 1802 } 1803 1804 return NULL; 1805 } 1806 1807 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1808 struct hid_report *report) 1809 { 1810 int i, j; 1811 1812 for (i = 0; i < report->maxfield; i++) 1813 for (j = 0; j < report->field[i]->maxusage; j++) 1814 hidinput_configure_usage(hidinput, report->field[i], 1815 report->field[i]->usage + j); 1816 } 1817 1818 /* 1819 * Register the input device; print a message. 1820 * Configure the input layer interface 1821 * Read all reports and initialize the absolute field values. 1822 */ 1823 1824 int hidinput_connect(struct hid_device *hid, unsigned int force) 1825 { 1826 struct hid_driver *drv = hid->driver; 1827 struct hid_report *report; 1828 struct hid_input *next, *hidinput = NULL; 1829 unsigned int application; 1830 int i, k; 1831 1832 INIT_LIST_HEAD(&hid->inputs); 1833 INIT_WORK(&hid->led_work, hidinput_led_worker); 1834 1835 hid->status &= ~HID_STAT_DUP_DETECTED; 1836 1837 if (!force) { 1838 for (i = 0; i < hid->maxcollection; i++) { 1839 struct hid_collection *col = &hid->collection[i]; 1840 if (col->type == HID_COLLECTION_APPLICATION || 1841 col->type == HID_COLLECTION_PHYSICAL) 1842 if (IS_INPUT_APPLICATION(col->usage)) 1843 break; 1844 } 1845 1846 if (i == hid->maxcollection) 1847 return -1; 1848 } 1849 1850 report_features(hid); 1851 1852 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1853 if (k == HID_OUTPUT_REPORT && 1854 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1855 continue; 1856 1857 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1858 1859 if (!report->maxfield) 1860 continue; 1861 1862 application = report->application; 1863 1864 /* 1865 * Find the previous hidinput report attached 1866 * to this report id. 1867 */ 1868 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1869 hidinput = hidinput_match(report); 1870 else if (hid->maxapplication > 1 && 1871 (hid->quirks & HID_QUIRK_INPUT_PER_APP)) 1872 hidinput = hidinput_match_application(report); 1873 1874 if (!hidinput) { 1875 hidinput = hidinput_allocate(hid, application); 1876 if (!hidinput) 1877 goto out_unwind; 1878 } 1879 1880 hidinput_configure_usages(hidinput, report); 1881 1882 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1883 hidinput->report = report; 1884 1885 list_add_tail(&report->hidinput_list, 1886 &hidinput->reports); 1887 } 1888 } 1889 1890 hidinput_change_resolution_multipliers(hid); 1891 1892 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1893 if (drv->input_configured && 1894 drv->input_configured(hid, hidinput)) 1895 goto out_unwind; 1896 1897 if (!hidinput_has_been_populated(hidinput)) { 1898 /* no need to register an input device not populated */ 1899 hidinput_cleanup_hidinput(hid, hidinput); 1900 continue; 1901 } 1902 1903 if (input_register_device(hidinput->input)) 1904 goto out_unwind; 1905 hidinput->registered = true; 1906 } 1907 1908 if (list_empty(&hid->inputs)) { 1909 hid_err(hid, "No inputs registered, leaving\n"); 1910 goto out_unwind; 1911 } 1912 1913 if (hid->status & HID_STAT_DUP_DETECTED) 1914 hid_dbg(hid, 1915 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); 1916 1917 return 0; 1918 1919 out_unwind: 1920 /* unwind the ones we already registered */ 1921 hidinput_disconnect(hid); 1922 1923 return -1; 1924 } 1925 EXPORT_SYMBOL_GPL(hidinput_connect); 1926 1927 void hidinput_disconnect(struct hid_device *hid) 1928 { 1929 struct hid_input *hidinput, *next; 1930 1931 hidinput_cleanup_battery(hid); 1932 1933 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1934 list_del(&hidinput->list); 1935 if (hidinput->registered) 1936 input_unregister_device(hidinput->input); 1937 else 1938 input_free_device(hidinput->input); 1939 kfree(hidinput->name); 1940 kfree(hidinput); 1941 } 1942 1943 /* led_work is spawned by input_dev callbacks, but doesn't access the 1944 * parent input_dev at all. Once all input devices are removed, we 1945 * know that led_work will never get restarted, so we can cancel it 1946 * synchronously and are safe. */ 1947 cancel_work_sync(&hid->led_work); 1948 } 1949 EXPORT_SYMBOL_GPL(hidinput_disconnect); 1950