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 static __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 if (code == ABS_X || code == ABS_Y || code == ABS_Z) { 229 if (field->unit == 0x11) { /* If centimeters */ 230 /* Convert to millimeters */ 231 unit_exponent += 1; 232 } else if (field->unit == 0x13) { /* If inches */ 233 /* Convert to millimeters */ 234 prev = physical_extents; 235 physical_extents *= 254; 236 if (physical_extents < prev) 237 return 0; 238 unit_exponent -= 1; 239 } else { 240 return 0; 241 } 242 } else if (code == ABS_RX || code == ABS_RY || code == ABS_RZ) { 243 if (field->unit == 0x14) { /* If degrees */ 244 /* Convert to radians */ 245 prev = logical_extents; 246 logical_extents *= 573; 247 if (logical_extents < prev) 248 return 0; 249 unit_exponent += 1; 250 } else if (field->unit != 0x12) { /* If not radians */ 251 return 0; 252 } 253 } else { 254 return 0; 255 } 256 257 /* Apply negative unit exponent */ 258 for (; unit_exponent < 0; unit_exponent++) { 259 prev = logical_extents; 260 logical_extents *= 10; 261 if (logical_extents < prev) 262 return 0; 263 } 264 /* Apply positive unit exponent */ 265 for (; unit_exponent > 0; unit_exponent--) { 266 prev = physical_extents; 267 physical_extents *= 10; 268 if (physical_extents < prev) 269 return 0; 270 } 271 272 /* Calculate resolution */ 273 return logical_extents / physical_extents; 274 } 275 276 #ifdef CONFIG_HID_BATTERY_STRENGTH 277 static enum power_supply_property hidinput_battery_props[] = { 278 POWER_SUPPLY_PROP_PRESENT, 279 POWER_SUPPLY_PROP_ONLINE, 280 POWER_SUPPLY_PROP_CAPACITY, 281 POWER_SUPPLY_PROP_MODEL_NAME, 282 POWER_SUPPLY_PROP_STATUS, 283 POWER_SUPPLY_PROP_SCOPE, 284 }; 285 286 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */ 287 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */ 288 289 static const struct hid_device_id hid_battery_quirks[] = { 290 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 291 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI), 292 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 293 {} 294 }; 295 296 static unsigned find_battery_quirk(struct hid_device *hdev) 297 { 298 unsigned quirks = 0; 299 const struct hid_device_id *match; 300 301 match = hid_match_id(hdev, hid_battery_quirks); 302 if (match != NULL) 303 quirks = match->driver_data; 304 305 return quirks; 306 } 307 308 static int hidinput_get_battery_property(struct power_supply *psy, 309 enum power_supply_property prop, 310 union power_supply_propval *val) 311 { 312 struct hid_device *dev = container_of(psy, struct hid_device, battery); 313 int ret = 0; 314 __u8 buf[2] = {}; 315 316 switch (prop) { 317 case POWER_SUPPLY_PROP_PRESENT: 318 case POWER_SUPPLY_PROP_ONLINE: 319 val->intval = 1; 320 break; 321 322 case POWER_SUPPLY_PROP_CAPACITY: 323 ret = dev->hid_get_raw_report(dev, dev->battery_report_id, 324 buf, sizeof(buf), 325 dev->battery_report_type); 326 327 if (ret != 2) { 328 if (ret >= 0) 329 ret = -EINVAL; 330 break; 331 } 332 333 if (dev->battery_min < dev->battery_max && 334 buf[1] >= dev->battery_min && 335 buf[1] <= dev->battery_max) 336 val->intval = (100 * (buf[1] - dev->battery_min)) / 337 (dev->battery_max - dev->battery_min); 338 break; 339 340 case POWER_SUPPLY_PROP_MODEL_NAME: 341 val->strval = dev->name; 342 break; 343 344 case POWER_SUPPLY_PROP_STATUS: 345 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 346 break; 347 348 case POWER_SUPPLY_PROP_SCOPE: 349 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 350 break; 351 352 default: 353 ret = -EINVAL; 354 break; 355 } 356 357 return ret; 358 } 359 360 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field) 361 { 362 struct power_supply *battery = &dev->battery; 363 int ret; 364 unsigned quirks; 365 s32 min, max; 366 367 if (field->usage->hid != HID_DC_BATTERYSTRENGTH) 368 return false; /* no match */ 369 370 if (battery->name != NULL) 371 goto out; /* already initialized? */ 372 373 battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq); 374 if (battery->name == NULL) 375 goto out; 376 377 battery->type = POWER_SUPPLY_TYPE_BATTERY; 378 battery->properties = hidinput_battery_props; 379 battery->num_properties = ARRAY_SIZE(hidinput_battery_props); 380 battery->use_for_apm = 0; 381 battery->get_property = hidinput_get_battery_property; 382 383 quirks = find_battery_quirk(dev); 384 385 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 386 dev->bus, dev->vendor, dev->product, dev->version, quirks); 387 388 min = field->logical_minimum; 389 max = field->logical_maximum; 390 391 if (quirks & HID_BATTERY_QUIRK_PERCENT) { 392 min = 0; 393 max = 100; 394 } 395 396 if (quirks & HID_BATTERY_QUIRK_FEATURE) 397 report_type = HID_FEATURE_REPORT; 398 399 dev->battery_min = min; 400 dev->battery_max = max; 401 dev->battery_report_type = report_type; 402 dev->battery_report_id = field->report->id; 403 404 ret = power_supply_register(&dev->dev, battery); 405 if (ret != 0) { 406 hid_warn(dev, "can't register power supply: %d\n", ret); 407 kfree(battery->name); 408 battery->name = NULL; 409 } 410 411 power_supply_powers(battery, &dev->dev); 412 413 out: 414 return true; 415 } 416 417 static void hidinput_cleanup_battery(struct hid_device *dev) 418 { 419 if (!dev->battery.name) 420 return; 421 422 power_supply_unregister(&dev->battery); 423 kfree(dev->battery.name); 424 dev->battery.name = NULL; 425 } 426 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 427 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 428 struct hid_field *field) 429 { 430 return false; 431 } 432 433 static void hidinput_cleanup_battery(struct hid_device *dev) 434 { 435 } 436 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 437 438 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 439 struct hid_usage *usage) 440 { 441 struct input_dev *input = hidinput->input; 442 struct hid_device *device = input_get_drvdata(input); 443 int max = 0, code; 444 unsigned long *bit = NULL; 445 446 field->hidinput = hidinput; 447 448 if (field->flags & HID_MAIN_ITEM_CONSTANT) 449 goto ignore; 450 451 /* only LED usages are supported in output fields */ 452 if (field->report_type == HID_OUTPUT_REPORT && 453 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 454 goto ignore; 455 } 456 457 if (device->driver->input_mapping) { 458 int ret = device->driver->input_mapping(device, hidinput, field, 459 usage, &bit, &max); 460 if (ret > 0) 461 goto mapped; 462 if (ret < 0) 463 goto ignore; 464 } 465 466 switch (usage->hid & HID_USAGE_PAGE) { 467 case HID_UP_UNDEFINED: 468 goto ignore; 469 470 case HID_UP_KEYBOARD: 471 set_bit(EV_REP, input->evbit); 472 473 if ((usage->hid & HID_USAGE) < 256) { 474 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 475 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 476 } else 477 map_key(KEY_UNKNOWN); 478 479 break; 480 481 case HID_UP_BUTTON: 482 code = ((usage->hid - 1) & HID_USAGE); 483 484 switch (field->application) { 485 case HID_GD_MOUSE: 486 case HID_GD_POINTER: code += BTN_MOUSE; break; 487 case HID_GD_JOYSTICK: 488 if (code <= 0xf) 489 code += BTN_JOYSTICK; 490 else 491 code += BTN_TRIGGER_HAPPY; 492 break; 493 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 494 default: 495 switch (field->physical) { 496 case HID_GD_MOUSE: 497 case HID_GD_POINTER: code += BTN_MOUSE; break; 498 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 499 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 500 default: code += BTN_MISC; 501 } 502 } 503 504 map_key(code); 505 break; 506 507 case HID_UP_SIMULATION: 508 switch (usage->hid & 0xffff) { 509 case 0xba: map_abs(ABS_RUDDER); break; 510 case 0xbb: map_abs(ABS_THROTTLE); break; 511 case 0xc4: map_abs(ABS_GAS); break; 512 case 0xc5: map_abs(ABS_BRAKE); break; 513 case 0xc8: map_abs(ABS_WHEEL); break; 514 default: goto ignore; 515 } 516 break; 517 518 case HID_UP_GENDESK: 519 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 520 switch (usage->hid & 0xf) { 521 case 0x1: map_key_clear(KEY_POWER); break; 522 case 0x2: map_key_clear(KEY_SLEEP); break; 523 case 0x3: map_key_clear(KEY_WAKEUP); break; 524 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 525 case 0x5: map_key_clear(KEY_MENU); break; 526 case 0x6: map_key_clear(KEY_PROG1); break; 527 case 0x7: map_key_clear(KEY_HELP); break; 528 case 0x8: map_key_clear(KEY_EXIT); break; 529 case 0x9: map_key_clear(KEY_SELECT); break; 530 case 0xa: map_key_clear(KEY_RIGHT); break; 531 case 0xb: map_key_clear(KEY_LEFT); break; 532 case 0xc: map_key_clear(KEY_UP); break; 533 case 0xd: map_key_clear(KEY_DOWN); break; 534 case 0xe: map_key_clear(KEY_POWER2); break; 535 case 0xf: map_key_clear(KEY_RESTART); break; 536 default: goto unknown; 537 } 538 break; 539 } 540 541 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 542 switch (usage->hid) { 543 case HID_GD_UP: usage->hat_dir = 1; break; 544 case HID_GD_DOWN: usage->hat_dir = 5; break; 545 case HID_GD_RIGHT: usage->hat_dir = 3; break; 546 case HID_GD_LEFT: usage->hat_dir = 7; break; 547 default: goto unknown; 548 } 549 if (field->dpad) { 550 map_abs(field->dpad); 551 goto ignore; 552 } 553 map_abs(ABS_HAT0X); 554 break; 555 } 556 557 switch (usage->hid) { 558 /* These usage IDs map directly to the usage codes. */ 559 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 560 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 561 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL: 562 if (field->flags & HID_MAIN_ITEM_RELATIVE) 563 map_rel(usage->hid & 0xf); 564 else 565 map_abs(usage->hid & 0xf); 566 break; 567 568 case HID_GD_HATSWITCH: 569 usage->hat_min = field->logical_minimum; 570 usage->hat_max = field->logical_maximum; 571 map_abs(ABS_HAT0X); 572 break; 573 574 case HID_GD_START: map_key_clear(BTN_START); break; 575 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 576 577 default: goto unknown; 578 } 579 580 break; 581 582 case HID_UP_LED: 583 switch (usage->hid & 0xffff) { /* HID-Value: */ 584 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 585 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 586 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 587 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 588 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 589 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 590 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 591 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 592 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 593 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 594 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 595 596 default: goto ignore; 597 } 598 break; 599 600 case HID_UP_DIGITIZER: 601 switch (usage->hid & 0xff) { 602 case 0x00: /* Undefined */ 603 goto ignore; 604 605 case 0x30: /* TipPressure */ 606 if (!test_bit(BTN_TOUCH, input->keybit)) { 607 device->quirks |= HID_QUIRK_NOTOUCH; 608 set_bit(EV_KEY, input->evbit); 609 set_bit(BTN_TOUCH, input->keybit); 610 } 611 map_abs_clear(ABS_PRESSURE); 612 break; 613 614 case 0x32: /* InRange */ 615 switch (field->physical & 0xff) { 616 case 0x21: map_key(BTN_TOOL_MOUSE); break; 617 case 0x22: map_key(BTN_TOOL_FINGER); break; 618 default: map_key(BTN_TOOL_PEN); break; 619 } 620 break; 621 622 case 0x3c: /* Invert */ 623 map_key_clear(BTN_TOOL_RUBBER); 624 break; 625 626 case 0x33: /* Touch */ 627 case 0x42: /* TipSwitch */ 628 case 0x43: /* TipSwitch2 */ 629 device->quirks &= ~HID_QUIRK_NOTOUCH; 630 map_key_clear(BTN_TOUCH); 631 break; 632 633 case 0x44: /* BarrelSwitch */ 634 map_key_clear(BTN_STYLUS); 635 break; 636 637 case 0x46: /* TabletPick */ 638 map_key_clear(BTN_STYLUS2); 639 break; 640 641 case 0x51: /* ContactID */ 642 device->quirks |= HID_QUIRK_MULTITOUCH; 643 goto unknown; 644 645 default: goto unknown; 646 } 647 break; 648 649 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 650 switch (usage->hid & HID_USAGE) { 651 case 0x000: goto ignore; 652 case 0x030: map_key_clear(KEY_POWER); break; 653 case 0x031: map_key_clear(KEY_RESTART); break; 654 case 0x032: map_key_clear(KEY_SLEEP); break; 655 case 0x034: map_key_clear(KEY_SLEEP); break; 656 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 657 case 0x036: map_key_clear(BTN_MISC); break; 658 659 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 660 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 661 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 662 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 663 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 664 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 665 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 666 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 667 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 668 669 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 670 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 671 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 672 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 673 case 0x069: map_key_clear(KEY_RED); break; 674 case 0x06a: map_key_clear(KEY_GREEN); break; 675 case 0x06b: map_key_clear(KEY_BLUE); break; 676 case 0x06c: map_key_clear(KEY_YELLOW); break; 677 case 0x06d: map_key_clear(KEY_ZOOM); break; 678 679 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 680 case 0x083: map_key_clear(KEY_LAST); break; 681 case 0x084: map_key_clear(KEY_ENTER); break; 682 case 0x088: map_key_clear(KEY_PC); break; 683 case 0x089: map_key_clear(KEY_TV); break; 684 case 0x08a: map_key_clear(KEY_WWW); break; 685 case 0x08b: map_key_clear(KEY_DVD); break; 686 case 0x08c: map_key_clear(KEY_PHONE); break; 687 case 0x08d: map_key_clear(KEY_PROGRAM); break; 688 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 689 case 0x08f: map_key_clear(KEY_GAMES); break; 690 case 0x090: map_key_clear(KEY_MEMO); break; 691 case 0x091: map_key_clear(KEY_CD); break; 692 case 0x092: map_key_clear(KEY_VCR); break; 693 case 0x093: map_key_clear(KEY_TUNER); break; 694 case 0x094: map_key_clear(KEY_EXIT); break; 695 case 0x095: map_key_clear(KEY_HELP); break; 696 case 0x096: map_key_clear(KEY_TAPE); break; 697 case 0x097: map_key_clear(KEY_TV2); break; 698 case 0x098: map_key_clear(KEY_SAT); break; 699 case 0x09a: map_key_clear(KEY_PVR); break; 700 701 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 702 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 703 case 0x0a0: map_key_clear(KEY_VCR2); break; 704 705 case 0x0b0: map_key_clear(KEY_PLAY); break; 706 case 0x0b1: map_key_clear(KEY_PAUSE); break; 707 case 0x0b2: map_key_clear(KEY_RECORD); break; 708 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 709 case 0x0b4: map_key_clear(KEY_REWIND); break; 710 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 711 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 712 case 0x0b7: map_key_clear(KEY_STOPCD); break; 713 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 714 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 715 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 716 case 0x0bf: map_key_clear(KEY_SLOW); break; 717 718 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 719 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 720 case 0x0e2: map_key_clear(KEY_MUTE); break; 721 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 722 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 723 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 724 case 0x0f5: map_key_clear(KEY_SLOW); break; 725 726 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 727 case 0x183: map_key_clear(KEY_CONFIG); break; 728 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 729 case 0x185: map_key_clear(KEY_EDITOR); break; 730 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 731 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 732 case 0x188: map_key_clear(KEY_PRESENTATION); break; 733 case 0x189: map_key_clear(KEY_DATABASE); break; 734 case 0x18a: map_key_clear(KEY_MAIL); break; 735 case 0x18b: map_key_clear(KEY_NEWS); break; 736 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 737 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 738 case 0x18e: map_key_clear(KEY_CALENDAR); break; 739 case 0x191: map_key_clear(KEY_FINANCE); break; 740 case 0x192: map_key_clear(KEY_CALC); break; 741 case 0x193: map_key_clear(KEY_PLAYER); break; 742 case 0x194: map_key_clear(KEY_FILE); break; 743 case 0x196: map_key_clear(KEY_WWW); break; 744 case 0x199: map_key_clear(KEY_CHAT); break; 745 case 0x19c: map_key_clear(KEY_LOGOFF); break; 746 case 0x19e: map_key_clear(KEY_COFFEE); break; 747 case 0x1a6: map_key_clear(KEY_HELP); break; 748 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 749 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 750 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 751 case 0x1b6: map_key_clear(KEY_IMAGES); break; 752 case 0x1b7: map_key_clear(KEY_AUDIO); break; 753 case 0x1b8: map_key_clear(KEY_VIDEO); break; 754 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 755 case 0x1bd: map_key_clear(KEY_INFO); break; 756 case 0x201: map_key_clear(KEY_NEW); break; 757 case 0x202: map_key_clear(KEY_OPEN); break; 758 case 0x203: map_key_clear(KEY_CLOSE); break; 759 case 0x204: map_key_clear(KEY_EXIT); break; 760 case 0x207: map_key_clear(KEY_SAVE); break; 761 case 0x208: map_key_clear(KEY_PRINT); break; 762 case 0x209: map_key_clear(KEY_PROPS); break; 763 case 0x21a: map_key_clear(KEY_UNDO); break; 764 case 0x21b: map_key_clear(KEY_COPY); break; 765 case 0x21c: map_key_clear(KEY_CUT); break; 766 case 0x21d: map_key_clear(KEY_PASTE); break; 767 case 0x21f: map_key_clear(KEY_FIND); break; 768 case 0x221: map_key_clear(KEY_SEARCH); break; 769 case 0x222: map_key_clear(KEY_GOTO); break; 770 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 771 case 0x224: map_key_clear(KEY_BACK); break; 772 case 0x225: map_key_clear(KEY_FORWARD); break; 773 case 0x226: map_key_clear(KEY_STOP); break; 774 case 0x227: map_key_clear(KEY_REFRESH); break; 775 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 776 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 777 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 778 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 779 case 0x233: map_key_clear(KEY_SCROLLUP); break; 780 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 781 case 0x238: map_rel(REL_HWHEEL); break; 782 case 0x23d: map_key_clear(KEY_EDIT); break; 783 case 0x25f: map_key_clear(KEY_CANCEL); break; 784 case 0x269: map_key_clear(KEY_INSERT); break; 785 case 0x26a: map_key_clear(KEY_DELETE); break; 786 case 0x279: map_key_clear(KEY_REDO); break; 787 788 case 0x289: map_key_clear(KEY_REPLY); break; 789 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 790 case 0x28c: map_key_clear(KEY_SEND); break; 791 792 default: goto ignore; 793 } 794 break; 795 796 case HID_UP_GENDEVCTRLS: 797 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field)) 798 goto ignore; 799 else 800 goto unknown; 801 break; 802 803 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 804 set_bit(EV_REP, input->evbit); 805 switch (usage->hid & HID_USAGE) { 806 case 0x021: map_key_clear(KEY_PRINT); break; 807 case 0x070: map_key_clear(KEY_HP); break; 808 case 0x071: map_key_clear(KEY_CAMERA); break; 809 case 0x072: map_key_clear(KEY_SOUND); break; 810 case 0x073: map_key_clear(KEY_QUESTION); break; 811 case 0x080: map_key_clear(KEY_EMAIL); break; 812 case 0x081: map_key_clear(KEY_CHAT); break; 813 case 0x082: map_key_clear(KEY_SEARCH); break; 814 case 0x083: map_key_clear(KEY_CONNECT); break; 815 case 0x084: map_key_clear(KEY_FINANCE); break; 816 case 0x085: map_key_clear(KEY_SPORT); break; 817 case 0x086: map_key_clear(KEY_SHOP); break; 818 default: goto ignore; 819 } 820 break; 821 822 case HID_UP_MSVENDOR: 823 goto ignore; 824 825 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 826 set_bit(EV_REP, input->evbit); 827 goto ignore; 828 829 case HID_UP_LOGIVENDOR: 830 goto ignore; 831 832 case HID_UP_PID: 833 switch (usage->hid & HID_USAGE) { 834 case 0xa4: map_key_clear(BTN_DEAD); break; 835 default: goto ignore; 836 } 837 break; 838 839 default: 840 unknown: 841 if (field->report_size == 1) { 842 if (field->report->type == HID_OUTPUT_REPORT) { 843 map_led(LED_MISC); 844 break; 845 } 846 map_key(BTN_MISC); 847 break; 848 } 849 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 850 map_rel(REL_MISC); 851 break; 852 } 853 map_abs(ABS_MISC); 854 break; 855 } 856 857 mapped: 858 if (device->driver->input_mapped && device->driver->input_mapped(device, 859 hidinput, field, usage, &bit, &max) < 0) 860 goto ignore; 861 862 set_bit(usage->type, input->evbit); 863 864 while (usage->code <= max && test_and_set_bit(usage->code, bit)) 865 usage->code = find_next_zero_bit(bit, max + 1, usage->code); 866 867 if (usage->code > max) 868 goto ignore; 869 870 871 if (usage->type == EV_ABS) { 872 873 int a = field->logical_minimum; 874 int b = field->logical_maximum; 875 876 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 877 a = field->logical_minimum = 0; 878 b = field->logical_maximum = 255; 879 } 880 881 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 882 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 883 else input_set_abs_params(input, usage->code, a, b, 0, 0); 884 885 input_abs_set_res(input, usage->code, 886 hidinput_calc_abs_res(field, usage->code)); 887 888 /* use a larger default input buffer for MT devices */ 889 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 890 input_set_events_per_packet(input, 60); 891 } 892 893 if (usage->type == EV_ABS && 894 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 895 int i; 896 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 897 input_set_abs_params(input, i, -1, 1, 0, 0); 898 set_bit(i, input->absbit); 899 } 900 if (usage->hat_dir && !field->dpad) 901 field->dpad = usage->code; 902 } 903 904 /* for those devices which produce Consumer volume usage as relative, 905 * we emulate pressing volumeup/volumedown appropriate number of times 906 * in hidinput_hid_event() 907 */ 908 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 909 (usage->code == ABS_VOLUME)) { 910 set_bit(KEY_VOLUMEUP, input->keybit); 911 set_bit(KEY_VOLUMEDOWN, input->keybit); 912 } 913 914 if (usage->type == EV_KEY) { 915 set_bit(EV_MSC, input->evbit); 916 set_bit(MSC_SCAN, input->mscbit); 917 } 918 919 ignore: 920 return; 921 922 } 923 924 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 925 { 926 struct input_dev *input; 927 unsigned *quirks = &hid->quirks; 928 929 if (!field->hidinput) 930 return; 931 932 input = field->hidinput->input; 933 934 if (!usage->type) 935 return; 936 937 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 938 int hat_dir = usage->hat_dir; 939 if (!hat_dir) 940 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 941 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 942 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 943 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 944 return; 945 } 946 947 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 948 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 949 return; 950 } 951 952 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 953 if (value) { 954 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 955 return; 956 } 957 input_event(input, usage->type, usage->code, 0); 958 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 959 return; 960 } 961 962 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 963 int a = field->logical_minimum; 964 int b = field->logical_maximum; 965 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 966 } 967 968 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 969 dbg_hid("Maximum Effects - %d\n",value); 970 return; 971 } 972 973 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 974 dbg_hid("PID Pool Report\n"); 975 return; 976 } 977 978 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 979 return; 980 981 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 982 (usage->code == ABS_VOLUME)) { 983 int count = abs(value); 984 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 985 int i; 986 987 for (i = 0; i < count; i++) { 988 input_event(input, EV_KEY, direction, 1); 989 input_sync(input); 990 input_event(input, EV_KEY, direction, 0); 991 input_sync(input); 992 } 993 return; 994 } 995 996 /* 997 * Ignore out-of-range values as per HID specification, 998 * section 5.10 and 6.2.25 999 */ 1000 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1001 (value < field->logical_minimum || 1002 value > field->logical_maximum)) { 1003 dbg_hid("Ignoring out-of-range value %x\n", value); 1004 return; 1005 } 1006 1007 /* report the usage code as scancode if the key status has changed */ 1008 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value) 1009 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1010 1011 input_event(input, usage->type, usage->code, value); 1012 1013 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY)) 1014 input_event(input, usage->type, usage->code, 0); 1015 } 1016 1017 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1018 { 1019 struct hid_input *hidinput; 1020 1021 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1022 return; 1023 1024 list_for_each_entry(hidinput, &hid->inputs, list) 1025 input_sync(hidinput->input); 1026 } 1027 EXPORT_SYMBOL_GPL(hidinput_report_event); 1028 1029 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1030 { 1031 struct hid_report *report; 1032 int i, j; 1033 1034 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1035 for (i = 0; i < report->maxfield; i++) { 1036 *field = report->field[i]; 1037 for (j = 0; j < (*field)->maxusage; j++) 1038 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1039 return j; 1040 } 1041 } 1042 return -1; 1043 } 1044 EXPORT_SYMBOL_GPL(hidinput_find_field); 1045 1046 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1047 { 1048 struct hid_report *report; 1049 struct hid_field *field; 1050 int i, j; 1051 1052 list_for_each_entry(report, 1053 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1054 list) { 1055 for (i = 0; i < report->maxfield; i++) { 1056 field = report->field[i]; 1057 for (j = 0; j < field->maxusage; j++) 1058 if (field->usage[j].type == EV_LED) 1059 return field; 1060 } 1061 } 1062 return NULL; 1063 } 1064 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1065 1066 unsigned int hidinput_count_leds(struct hid_device *hid) 1067 { 1068 struct hid_report *report; 1069 struct hid_field *field; 1070 int i, j; 1071 unsigned int count = 0; 1072 1073 list_for_each_entry(report, 1074 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1075 list) { 1076 for (i = 0; i < report->maxfield; i++) { 1077 field = report->field[i]; 1078 for (j = 0; j < field->maxusage; j++) 1079 if (field->usage[j].type == EV_LED && 1080 field->value[j]) 1081 count += 1; 1082 } 1083 } 1084 return count; 1085 } 1086 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1087 1088 static int hidinput_open(struct input_dev *dev) 1089 { 1090 struct hid_device *hid = input_get_drvdata(dev); 1091 1092 return hid_hw_open(hid); 1093 } 1094 1095 static void hidinput_close(struct input_dev *dev) 1096 { 1097 struct hid_device *hid = input_get_drvdata(dev); 1098 1099 hid_hw_close(hid); 1100 } 1101 1102 static void report_features(struct hid_device *hid) 1103 { 1104 struct hid_driver *drv = hid->driver; 1105 struct hid_report_enum *rep_enum; 1106 struct hid_report *rep; 1107 int i, j; 1108 1109 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1110 list_for_each_entry(rep, &rep_enum->report_list, list) 1111 for (i = 0; i < rep->maxfield; i++) 1112 for (j = 0; j < rep->field[i]->maxusage; j++) { 1113 /* Verify if Battery Strength feature is available */ 1114 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]); 1115 1116 if (drv->feature_mapping) 1117 drv->feature_mapping(hid, rep->field[i], 1118 rep->field[i]->usage + j); 1119 } 1120 } 1121 1122 /* 1123 * Register the input device; print a message. 1124 * Configure the input layer interface 1125 * Read all reports and initialize the absolute field values. 1126 */ 1127 1128 int hidinput_connect(struct hid_device *hid, unsigned int force) 1129 { 1130 struct hid_report *report; 1131 struct hid_input *hidinput = NULL; 1132 struct input_dev *input_dev; 1133 int i, j, k; 1134 1135 INIT_LIST_HEAD(&hid->inputs); 1136 1137 if (!force) { 1138 for (i = 0; i < hid->maxcollection; i++) { 1139 struct hid_collection *col = &hid->collection[i]; 1140 if (col->type == HID_COLLECTION_APPLICATION || 1141 col->type == HID_COLLECTION_PHYSICAL) 1142 if (IS_INPUT_APPLICATION(col->usage)) 1143 break; 1144 } 1145 1146 if (i == hid->maxcollection) 1147 return -1; 1148 } 1149 1150 report_features(hid); 1151 1152 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1153 if (k == HID_OUTPUT_REPORT && 1154 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1155 continue; 1156 1157 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1158 1159 if (!report->maxfield) 1160 continue; 1161 1162 if (!hidinput) { 1163 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1164 input_dev = input_allocate_device(); 1165 if (!hidinput || !input_dev) { 1166 kfree(hidinput); 1167 input_free_device(input_dev); 1168 hid_err(hid, "Out of memory during hid input probe\n"); 1169 goto out_unwind; 1170 } 1171 1172 input_set_drvdata(input_dev, hid); 1173 input_dev->event = 1174 hid->ll_driver->hidinput_input_event; 1175 input_dev->open = hidinput_open; 1176 input_dev->close = hidinput_close; 1177 input_dev->setkeycode = hidinput_setkeycode; 1178 input_dev->getkeycode = hidinput_getkeycode; 1179 1180 input_dev->name = hid->name; 1181 input_dev->phys = hid->phys; 1182 input_dev->uniq = hid->uniq; 1183 input_dev->id.bustype = hid->bus; 1184 input_dev->id.vendor = hid->vendor; 1185 input_dev->id.product = hid->product; 1186 input_dev->id.version = hid->version; 1187 input_dev->dev.parent = hid->dev.parent; 1188 hidinput->input = input_dev; 1189 list_add_tail(&hidinput->list, &hid->inputs); 1190 } 1191 1192 for (i = 0; i < report->maxfield; i++) 1193 for (j = 0; j < report->field[i]->maxusage; j++) 1194 hidinput_configure_usage(hidinput, report->field[i], 1195 report->field[i]->usage + j); 1196 1197 if (hid->quirks & HID_QUIRK_MULTI_INPUT) { 1198 /* This will leave hidinput NULL, so that it 1199 * allocates another one if we have more inputs on 1200 * the same interface. Some devices (e.g. Happ's 1201 * UGCI) cram a lot of unrelated inputs into the 1202 * same interface. */ 1203 hidinput->report = report; 1204 if (input_register_device(hidinput->input)) 1205 goto out_cleanup; 1206 hidinput = NULL; 1207 } 1208 } 1209 } 1210 1211 if (hid->quirks & HID_QUIRK_MULTITOUCH) { 1212 /* generic hid does not know how to handle multitouch devices */ 1213 if (hidinput) 1214 goto out_cleanup; 1215 goto out_unwind; 1216 } 1217 1218 if (hidinput && input_register_device(hidinput->input)) 1219 goto out_cleanup; 1220 1221 return 0; 1222 1223 out_cleanup: 1224 list_del(&hidinput->list); 1225 input_free_device(hidinput->input); 1226 kfree(hidinput); 1227 out_unwind: 1228 /* unwind the ones we already registered */ 1229 hidinput_disconnect(hid); 1230 1231 return -1; 1232 } 1233 EXPORT_SYMBOL_GPL(hidinput_connect); 1234 1235 void hidinput_disconnect(struct hid_device *hid) 1236 { 1237 struct hid_input *hidinput, *next; 1238 1239 hidinput_cleanup_battery(hid); 1240 1241 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1242 list_del(&hidinput->list); 1243 input_unregister_device(hidinput->input); 1244 kfree(hidinput); 1245 } 1246 } 1247 EXPORT_SYMBOL_GPL(hidinput_disconnect); 1248 1249