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 * hidinput_calc_abs_res - calculate an absolute axis resolution 197 * @field: the HID report field to calculate resolution for 198 * @code: axis code 199 * 200 * The formula is: 201 * (logical_maximum - logical_minimum) 202 * resolution = ---------------------------------------------------------- 203 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent 204 * 205 * as seen in the HID specification v1.11 6.2.2.7 Global Items. 206 * 207 * Only exponent 1 length units are processed. Centimeters and inches are 208 * converted to millimeters. Degrees are converted to radians. 209 */ 210 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) 211 { 212 __s32 unit_exponent = field->unit_exponent; 213 __s32 logical_extents = field->logical_maximum - 214 field->logical_minimum; 215 __s32 physical_extents = field->physical_maximum - 216 field->physical_minimum; 217 __s32 prev; 218 219 /* Check if the extents are sane */ 220 if (logical_extents <= 0 || physical_extents <= 0) 221 return 0; 222 223 /* 224 * Verify and convert units. 225 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding 226 */ 227 switch (code) { 228 case ABS_X: 229 case ABS_Y: 230 case ABS_Z: 231 case ABS_MT_POSITION_X: 232 case ABS_MT_POSITION_Y: 233 case ABS_MT_TOOL_X: 234 case ABS_MT_TOOL_Y: 235 case ABS_MT_TOUCH_MAJOR: 236 case ABS_MT_TOUCH_MINOR: 237 if (field->unit & 0xffffff00) /* Not a length */ 238 return 0; 239 unit_exponent += hid_snto32(field->unit >> 4, 4) - 1; 240 switch (field->unit & 0xf) { 241 case 0x1: /* If centimeters */ 242 /* Convert to millimeters */ 243 unit_exponent += 1; 244 break; 245 case 0x3: /* If inches */ 246 /* Convert to millimeters */ 247 prev = physical_extents; 248 physical_extents *= 254; 249 if (physical_extents < prev) 250 return 0; 251 unit_exponent -= 1; 252 break; 253 default: 254 return 0; 255 } 256 break; 257 258 case ABS_RX: 259 case ABS_RY: 260 case ABS_RZ: 261 case ABS_TILT_X: 262 case ABS_TILT_Y: 263 if (field->unit == 0x14) { /* If degrees */ 264 /* Convert to radians */ 265 prev = logical_extents; 266 logical_extents *= 573; 267 if (logical_extents < prev) 268 return 0; 269 unit_exponent += 1; 270 } else if (field->unit != 0x12) { /* If not radians */ 271 return 0; 272 } 273 break; 274 275 default: 276 return 0; 277 } 278 279 /* Apply negative unit exponent */ 280 for (; unit_exponent < 0; unit_exponent++) { 281 prev = logical_extents; 282 logical_extents *= 10; 283 if (logical_extents < prev) 284 return 0; 285 } 286 /* Apply positive unit exponent */ 287 for (; unit_exponent > 0; unit_exponent--) { 288 prev = physical_extents; 289 physical_extents *= 10; 290 if (physical_extents < prev) 291 return 0; 292 } 293 294 /* Calculate resolution */ 295 return DIV_ROUND_CLOSEST(logical_extents, physical_extents); 296 } 297 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res); 298 299 #ifdef CONFIG_HID_BATTERY_STRENGTH 300 static enum power_supply_property hidinput_battery_props[] = { 301 POWER_SUPPLY_PROP_PRESENT, 302 POWER_SUPPLY_PROP_ONLINE, 303 POWER_SUPPLY_PROP_CAPACITY, 304 POWER_SUPPLY_PROP_MODEL_NAME, 305 POWER_SUPPLY_PROP_STATUS, 306 POWER_SUPPLY_PROP_SCOPE, 307 }; 308 309 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */ 310 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */ 311 312 static const struct hid_device_id hid_battery_quirks[] = { 313 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 314 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO), 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_ANSI), 321 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 322 {} 323 }; 324 325 static unsigned find_battery_quirk(struct hid_device *hdev) 326 { 327 unsigned quirks = 0; 328 const struct hid_device_id *match; 329 330 match = hid_match_id(hdev, hid_battery_quirks); 331 if (match != NULL) 332 quirks = match->driver_data; 333 334 return quirks; 335 } 336 337 static int hidinput_get_battery_property(struct power_supply *psy, 338 enum power_supply_property prop, 339 union power_supply_propval *val) 340 { 341 struct hid_device *dev = container_of(psy, struct hid_device, battery); 342 int ret = 0; 343 __u8 buf[2] = {}; 344 345 switch (prop) { 346 case POWER_SUPPLY_PROP_PRESENT: 347 case POWER_SUPPLY_PROP_ONLINE: 348 val->intval = 1; 349 break; 350 351 case POWER_SUPPLY_PROP_CAPACITY: 352 ret = dev->hid_get_raw_report(dev, dev->battery_report_id, 353 buf, sizeof(buf), 354 dev->battery_report_type); 355 356 if (ret != 2) { 357 if (ret >= 0) 358 ret = -EINVAL; 359 break; 360 } 361 362 if (dev->battery_min < dev->battery_max && 363 buf[1] >= dev->battery_min && 364 buf[1] <= dev->battery_max) 365 val->intval = (100 * (buf[1] - dev->battery_min)) / 366 (dev->battery_max - dev->battery_min); 367 break; 368 369 case POWER_SUPPLY_PROP_MODEL_NAME: 370 val->strval = dev->name; 371 break; 372 373 case POWER_SUPPLY_PROP_STATUS: 374 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 375 break; 376 377 case POWER_SUPPLY_PROP_SCOPE: 378 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 379 break; 380 381 default: 382 ret = -EINVAL; 383 break; 384 } 385 386 return ret; 387 } 388 389 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field) 390 { 391 struct power_supply *battery = &dev->battery; 392 int ret; 393 unsigned quirks; 394 s32 min, max; 395 396 if (field->usage->hid != HID_DC_BATTERYSTRENGTH) 397 return false; /* no match */ 398 399 if (battery->name != NULL) 400 goto out; /* already initialized? */ 401 402 battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq); 403 if (battery->name == NULL) 404 goto out; 405 406 battery->type = POWER_SUPPLY_TYPE_BATTERY; 407 battery->properties = hidinput_battery_props; 408 battery->num_properties = ARRAY_SIZE(hidinput_battery_props); 409 battery->use_for_apm = 0; 410 battery->get_property = hidinput_get_battery_property; 411 412 quirks = find_battery_quirk(dev); 413 414 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 415 dev->bus, dev->vendor, dev->product, dev->version, quirks); 416 417 min = field->logical_minimum; 418 max = field->logical_maximum; 419 420 if (quirks & HID_BATTERY_QUIRK_PERCENT) { 421 min = 0; 422 max = 100; 423 } 424 425 if (quirks & HID_BATTERY_QUIRK_FEATURE) 426 report_type = HID_FEATURE_REPORT; 427 428 dev->battery_min = min; 429 dev->battery_max = max; 430 dev->battery_report_type = report_type; 431 dev->battery_report_id = field->report->id; 432 433 ret = power_supply_register(&dev->dev, battery); 434 if (ret != 0) { 435 hid_warn(dev, "can't register power supply: %d\n", ret); 436 kfree(battery->name); 437 battery->name = NULL; 438 } 439 440 power_supply_powers(battery, &dev->dev); 441 442 out: 443 return true; 444 } 445 446 static void hidinput_cleanup_battery(struct hid_device *dev) 447 { 448 if (!dev->battery.name) 449 return; 450 451 power_supply_unregister(&dev->battery); 452 kfree(dev->battery.name); 453 dev->battery.name = NULL; 454 } 455 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 456 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 457 struct hid_field *field) 458 { 459 return false; 460 } 461 462 static void hidinput_cleanup_battery(struct hid_device *dev) 463 { 464 } 465 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 466 467 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 468 struct hid_usage *usage) 469 { 470 struct input_dev *input = hidinput->input; 471 struct hid_device *device = input_get_drvdata(input); 472 int max = 0, code; 473 unsigned long *bit = NULL; 474 475 field->hidinput = hidinput; 476 477 if (field->flags & HID_MAIN_ITEM_CONSTANT) 478 goto ignore; 479 480 /* only LED usages are supported in output fields */ 481 if (field->report_type == HID_OUTPUT_REPORT && 482 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 483 goto ignore; 484 } 485 486 if (device->driver->input_mapping) { 487 int ret = device->driver->input_mapping(device, hidinput, field, 488 usage, &bit, &max); 489 if (ret > 0) 490 goto mapped; 491 if (ret < 0) 492 goto ignore; 493 } 494 495 switch (usage->hid & HID_USAGE_PAGE) { 496 case HID_UP_UNDEFINED: 497 goto ignore; 498 499 case HID_UP_KEYBOARD: 500 set_bit(EV_REP, input->evbit); 501 502 if ((usage->hid & HID_USAGE) < 256) { 503 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 504 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 505 } else 506 map_key(KEY_UNKNOWN); 507 508 break; 509 510 case HID_UP_BUTTON: 511 code = ((usage->hid - 1) & HID_USAGE); 512 513 switch (field->application) { 514 case HID_GD_MOUSE: 515 case HID_GD_POINTER: code += BTN_MOUSE; break; 516 case HID_GD_JOYSTICK: 517 if (code <= 0xf) 518 code += BTN_JOYSTICK; 519 else 520 code += BTN_TRIGGER_HAPPY - 0x10; 521 break; 522 case HID_GD_GAMEPAD: 523 if (code <= 0xf) 524 code += BTN_GAMEPAD; 525 else 526 code += BTN_TRIGGER_HAPPY - 0x10; 527 break; 528 default: 529 switch (field->physical) { 530 case HID_GD_MOUSE: 531 case HID_GD_POINTER: code += BTN_MOUSE; break; 532 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 533 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 534 default: code += BTN_MISC; 535 } 536 } 537 538 map_key(code); 539 break; 540 541 case HID_UP_SIMULATION: 542 switch (usage->hid & 0xffff) { 543 case 0xba: map_abs(ABS_RUDDER); break; 544 case 0xbb: map_abs(ABS_THROTTLE); break; 545 case 0xc4: map_abs(ABS_GAS); break; 546 case 0xc5: map_abs(ABS_BRAKE); break; 547 case 0xc8: map_abs(ABS_WHEEL); break; 548 default: goto ignore; 549 } 550 break; 551 552 case HID_UP_GENDESK: 553 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 554 switch (usage->hid & 0xf) { 555 case 0x1: map_key_clear(KEY_POWER); break; 556 case 0x2: map_key_clear(KEY_SLEEP); break; 557 case 0x3: map_key_clear(KEY_WAKEUP); break; 558 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 559 case 0x5: map_key_clear(KEY_MENU); break; 560 case 0x6: map_key_clear(KEY_PROG1); break; 561 case 0x7: map_key_clear(KEY_HELP); break; 562 case 0x8: map_key_clear(KEY_EXIT); break; 563 case 0x9: map_key_clear(KEY_SELECT); break; 564 case 0xa: map_key_clear(KEY_RIGHT); break; 565 case 0xb: map_key_clear(KEY_LEFT); break; 566 case 0xc: map_key_clear(KEY_UP); break; 567 case 0xd: map_key_clear(KEY_DOWN); break; 568 case 0xe: map_key_clear(KEY_POWER2); break; 569 case 0xf: map_key_clear(KEY_RESTART); break; 570 default: goto unknown; 571 } 572 break; 573 } 574 575 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 576 switch (usage->hid) { 577 case HID_GD_UP: usage->hat_dir = 1; break; 578 case HID_GD_DOWN: usage->hat_dir = 5; break; 579 case HID_GD_RIGHT: usage->hat_dir = 3; break; 580 case HID_GD_LEFT: usage->hat_dir = 7; break; 581 default: goto unknown; 582 } 583 if (field->dpad) { 584 map_abs(field->dpad); 585 goto ignore; 586 } 587 map_abs(ABS_HAT0X); 588 break; 589 } 590 591 switch (usage->hid) { 592 /* These usage IDs map directly to the usage codes. */ 593 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 594 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 595 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL: 596 if (field->flags & HID_MAIN_ITEM_RELATIVE) 597 map_rel(usage->hid & 0xf); 598 else 599 map_abs(usage->hid & 0xf); 600 break; 601 602 case HID_GD_HATSWITCH: 603 usage->hat_min = field->logical_minimum; 604 usage->hat_max = field->logical_maximum; 605 map_abs(ABS_HAT0X); 606 break; 607 608 case HID_GD_START: map_key_clear(BTN_START); break; 609 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 610 611 default: goto unknown; 612 } 613 614 break; 615 616 case HID_UP_LED: 617 switch (usage->hid & 0xffff) { /* HID-Value: */ 618 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 619 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 620 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 621 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 622 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 623 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 624 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 625 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 626 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 627 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 628 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 629 630 default: goto ignore; 631 } 632 break; 633 634 case HID_UP_DIGITIZER: 635 switch (usage->hid & 0xff) { 636 case 0x00: /* Undefined */ 637 goto ignore; 638 639 case 0x30: /* TipPressure */ 640 if (!test_bit(BTN_TOUCH, input->keybit)) { 641 device->quirks |= HID_QUIRK_NOTOUCH; 642 set_bit(EV_KEY, input->evbit); 643 set_bit(BTN_TOUCH, input->keybit); 644 } 645 map_abs_clear(ABS_PRESSURE); 646 break; 647 648 case 0x32: /* InRange */ 649 switch (field->physical & 0xff) { 650 case 0x21: map_key(BTN_TOOL_MOUSE); break; 651 case 0x22: map_key(BTN_TOOL_FINGER); break; 652 default: map_key(BTN_TOOL_PEN); break; 653 } 654 break; 655 656 case 0x3c: /* Invert */ 657 map_key_clear(BTN_TOOL_RUBBER); 658 break; 659 660 case 0x3d: /* X Tilt */ 661 map_abs_clear(ABS_TILT_X); 662 break; 663 664 case 0x3e: /* Y Tilt */ 665 map_abs_clear(ABS_TILT_Y); 666 break; 667 668 case 0x33: /* Touch */ 669 case 0x42: /* TipSwitch */ 670 case 0x43: /* TipSwitch2 */ 671 device->quirks &= ~HID_QUIRK_NOTOUCH; 672 map_key_clear(BTN_TOUCH); 673 break; 674 675 case 0x44: /* BarrelSwitch */ 676 map_key_clear(BTN_STYLUS); 677 break; 678 679 case 0x46: /* TabletPick */ 680 map_key_clear(BTN_STYLUS2); 681 break; 682 683 default: goto unknown; 684 } 685 break; 686 687 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 688 switch (usage->hid & HID_USAGE) { 689 case 0x000: goto ignore; 690 case 0x030: map_key_clear(KEY_POWER); break; 691 case 0x031: map_key_clear(KEY_RESTART); break; 692 case 0x032: map_key_clear(KEY_SLEEP); break; 693 case 0x034: map_key_clear(KEY_SLEEP); break; 694 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 695 case 0x036: map_key_clear(BTN_MISC); break; 696 697 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 698 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 699 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 700 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 701 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 702 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 703 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 704 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 705 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 706 707 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 708 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 709 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 710 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 711 case 0x069: map_key_clear(KEY_RED); break; 712 case 0x06a: map_key_clear(KEY_GREEN); break; 713 case 0x06b: map_key_clear(KEY_BLUE); break; 714 case 0x06c: map_key_clear(KEY_YELLOW); break; 715 case 0x06d: map_key_clear(KEY_ZOOM); break; 716 717 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 718 case 0x083: map_key_clear(KEY_LAST); break; 719 case 0x084: map_key_clear(KEY_ENTER); break; 720 case 0x088: map_key_clear(KEY_PC); break; 721 case 0x089: map_key_clear(KEY_TV); break; 722 case 0x08a: map_key_clear(KEY_WWW); break; 723 case 0x08b: map_key_clear(KEY_DVD); break; 724 case 0x08c: map_key_clear(KEY_PHONE); break; 725 case 0x08d: map_key_clear(KEY_PROGRAM); break; 726 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 727 case 0x08f: map_key_clear(KEY_GAMES); break; 728 case 0x090: map_key_clear(KEY_MEMO); break; 729 case 0x091: map_key_clear(KEY_CD); break; 730 case 0x092: map_key_clear(KEY_VCR); break; 731 case 0x093: map_key_clear(KEY_TUNER); break; 732 case 0x094: map_key_clear(KEY_EXIT); break; 733 case 0x095: map_key_clear(KEY_HELP); break; 734 case 0x096: map_key_clear(KEY_TAPE); break; 735 case 0x097: map_key_clear(KEY_TV2); break; 736 case 0x098: map_key_clear(KEY_SAT); break; 737 case 0x09a: map_key_clear(KEY_PVR); break; 738 739 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 740 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 741 case 0x0a0: map_key_clear(KEY_VCR2); break; 742 743 case 0x0b0: map_key_clear(KEY_PLAY); break; 744 case 0x0b1: map_key_clear(KEY_PAUSE); break; 745 case 0x0b2: map_key_clear(KEY_RECORD); break; 746 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 747 case 0x0b4: map_key_clear(KEY_REWIND); break; 748 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 749 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 750 case 0x0b7: map_key_clear(KEY_STOPCD); break; 751 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 752 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 753 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 754 case 0x0bf: map_key_clear(KEY_SLOW); break; 755 756 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 757 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 758 case 0x0e2: map_key_clear(KEY_MUTE); break; 759 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 760 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 761 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 762 case 0x0f5: map_key_clear(KEY_SLOW); break; 763 764 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 765 case 0x183: map_key_clear(KEY_CONFIG); break; 766 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 767 case 0x185: map_key_clear(KEY_EDITOR); break; 768 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 769 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 770 case 0x188: map_key_clear(KEY_PRESENTATION); break; 771 case 0x189: map_key_clear(KEY_DATABASE); break; 772 case 0x18a: map_key_clear(KEY_MAIL); break; 773 case 0x18b: map_key_clear(KEY_NEWS); break; 774 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 775 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 776 case 0x18e: map_key_clear(KEY_CALENDAR); break; 777 case 0x191: map_key_clear(KEY_FINANCE); break; 778 case 0x192: map_key_clear(KEY_CALC); break; 779 case 0x193: map_key_clear(KEY_PLAYER); break; 780 case 0x194: map_key_clear(KEY_FILE); break; 781 case 0x196: map_key_clear(KEY_WWW); break; 782 case 0x199: map_key_clear(KEY_CHAT); break; 783 case 0x19c: map_key_clear(KEY_LOGOFF); break; 784 case 0x19e: map_key_clear(KEY_COFFEE); break; 785 case 0x1a6: map_key_clear(KEY_HELP); break; 786 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 787 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 788 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 789 case 0x1b6: map_key_clear(KEY_IMAGES); break; 790 case 0x1b7: map_key_clear(KEY_AUDIO); break; 791 case 0x1b8: map_key_clear(KEY_VIDEO); break; 792 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 793 case 0x1bd: map_key_clear(KEY_INFO); break; 794 case 0x201: map_key_clear(KEY_NEW); break; 795 case 0x202: map_key_clear(KEY_OPEN); break; 796 case 0x203: map_key_clear(KEY_CLOSE); break; 797 case 0x204: map_key_clear(KEY_EXIT); break; 798 case 0x207: map_key_clear(KEY_SAVE); break; 799 case 0x208: map_key_clear(KEY_PRINT); break; 800 case 0x209: map_key_clear(KEY_PROPS); break; 801 case 0x21a: map_key_clear(KEY_UNDO); break; 802 case 0x21b: map_key_clear(KEY_COPY); break; 803 case 0x21c: map_key_clear(KEY_CUT); break; 804 case 0x21d: map_key_clear(KEY_PASTE); break; 805 case 0x21f: map_key_clear(KEY_FIND); break; 806 case 0x221: map_key_clear(KEY_SEARCH); break; 807 case 0x222: map_key_clear(KEY_GOTO); break; 808 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 809 case 0x224: map_key_clear(KEY_BACK); break; 810 case 0x225: map_key_clear(KEY_FORWARD); break; 811 case 0x226: map_key_clear(KEY_STOP); break; 812 case 0x227: map_key_clear(KEY_REFRESH); break; 813 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 814 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 815 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 816 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 817 case 0x233: map_key_clear(KEY_SCROLLUP); break; 818 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 819 case 0x238: map_rel(REL_HWHEEL); break; 820 case 0x23d: map_key_clear(KEY_EDIT); break; 821 case 0x25f: map_key_clear(KEY_CANCEL); break; 822 case 0x269: map_key_clear(KEY_INSERT); break; 823 case 0x26a: map_key_clear(KEY_DELETE); break; 824 case 0x279: map_key_clear(KEY_REDO); break; 825 826 case 0x289: map_key_clear(KEY_REPLY); break; 827 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 828 case 0x28c: map_key_clear(KEY_SEND); break; 829 830 default: goto ignore; 831 } 832 break; 833 834 case HID_UP_GENDEVCTRLS: 835 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field)) 836 goto ignore; 837 else 838 goto unknown; 839 break; 840 841 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 842 set_bit(EV_REP, input->evbit); 843 switch (usage->hid & HID_USAGE) { 844 case 0x021: map_key_clear(KEY_PRINT); break; 845 case 0x070: map_key_clear(KEY_HP); break; 846 case 0x071: map_key_clear(KEY_CAMERA); break; 847 case 0x072: map_key_clear(KEY_SOUND); break; 848 case 0x073: map_key_clear(KEY_QUESTION); break; 849 case 0x080: map_key_clear(KEY_EMAIL); break; 850 case 0x081: map_key_clear(KEY_CHAT); break; 851 case 0x082: map_key_clear(KEY_SEARCH); break; 852 case 0x083: map_key_clear(KEY_CONNECT); break; 853 case 0x084: map_key_clear(KEY_FINANCE); break; 854 case 0x085: map_key_clear(KEY_SPORT); break; 855 case 0x086: map_key_clear(KEY_SHOP); break; 856 default: goto ignore; 857 } 858 break; 859 860 case HID_UP_HPVENDOR2: 861 set_bit(EV_REP, input->evbit); 862 switch (usage->hid & HID_USAGE) { 863 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 864 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 865 default: goto ignore; 866 } 867 break; 868 869 case HID_UP_MSVENDOR: 870 goto ignore; 871 872 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 873 set_bit(EV_REP, input->evbit); 874 goto ignore; 875 876 case HID_UP_LOGIVENDOR: 877 goto ignore; 878 879 case HID_UP_PID: 880 switch (usage->hid & HID_USAGE) { 881 case 0xa4: map_key_clear(BTN_DEAD); break; 882 default: goto ignore; 883 } 884 break; 885 886 default: 887 unknown: 888 if (field->report_size == 1) { 889 if (field->report->type == HID_OUTPUT_REPORT) { 890 map_led(LED_MISC); 891 break; 892 } 893 map_key(BTN_MISC); 894 break; 895 } 896 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 897 map_rel(REL_MISC); 898 break; 899 } 900 map_abs(ABS_MISC); 901 break; 902 } 903 904 mapped: 905 if (device->driver->input_mapped && device->driver->input_mapped(device, 906 hidinput, field, usage, &bit, &max) < 0) 907 goto ignore; 908 909 set_bit(usage->type, input->evbit); 910 911 while (usage->code <= max && test_and_set_bit(usage->code, bit)) 912 usage->code = find_next_zero_bit(bit, max + 1, usage->code); 913 914 if (usage->code > max) 915 goto ignore; 916 917 918 if (usage->type == EV_ABS) { 919 920 int a = field->logical_minimum; 921 int b = field->logical_maximum; 922 923 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 924 a = field->logical_minimum = 0; 925 b = field->logical_maximum = 255; 926 } 927 928 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 929 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 930 else input_set_abs_params(input, usage->code, a, b, 0, 0); 931 932 input_abs_set_res(input, usage->code, 933 hidinput_calc_abs_res(field, usage->code)); 934 935 /* use a larger default input buffer for MT devices */ 936 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 937 input_set_events_per_packet(input, 60); 938 } 939 940 if (usage->type == EV_ABS && 941 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 942 int i; 943 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 944 input_set_abs_params(input, i, -1, 1, 0, 0); 945 set_bit(i, input->absbit); 946 } 947 if (usage->hat_dir && !field->dpad) 948 field->dpad = usage->code; 949 } 950 951 /* for those devices which produce Consumer volume usage as relative, 952 * we emulate pressing volumeup/volumedown appropriate number of times 953 * in hidinput_hid_event() 954 */ 955 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 956 (usage->code == ABS_VOLUME)) { 957 set_bit(KEY_VOLUMEUP, input->keybit); 958 set_bit(KEY_VOLUMEDOWN, input->keybit); 959 } 960 961 if (usage->type == EV_KEY) { 962 set_bit(EV_MSC, input->evbit); 963 set_bit(MSC_SCAN, input->mscbit); 964 } 965 966 ignore: 967 return; 968 969 } 970 971 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 972 { 973 struct input_dev *input; 974 unsigned *quirks = &hid->quirks; 975 976 if (!field->hidinput) 977 return; 978 979 input = field->hidinput->input; 980 981 if (!usage->type) 982 return; 983 984 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 985 int hat_dir = usage->hat_dir; 986 if (!hat_dir) 987 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 988 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 989 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 990 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 991 return; 992 } 993 994 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 995 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 996 return; 997 } 998 999 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 1000 if (value) { 1001 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1002 return; 1003 } 1004 input_event(input, usage->type, usage->code, 0); 1005 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1006 return; 1007 } 1008 1009 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 1010 int a = field->logical_minimum; 1011 int b = field->logical_maximum; 1012 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1013 } 1014 1015 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1016 dbg_hid("Maximum Effects - %d\n",value); 1017 return; 1018 } 1019 1020 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1021 dbg_hid("PID Pool Report\n"); 1022 return; 1023 } 1024 1025 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1026 return; 1027 1028 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1029 (usage->code == ABS_VOLUME)) { 1030 int count = abs(value); 1031 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1032 int i; 1033 1034 for (i = 0; i < count; i++) { 1035 input_event(input, EV_KEY, direction, 1); 1036 input_sync(input); 1037 input_event(input, EV_KEY, direction, 0); 1038 input_sync(input); 1039 } 1040 return; 1041 } 1042 1043 /* 1044 * Ignore out-of-range values as per HID specification, 1045 * section 5.10 and 6.2.25 1046 */ 1047 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1048 (value < field->logical_minimum || 1049 value > field->logical_maximum)) { 1050 dbg_hid("Ignoring out-of-range value %x\n", value); 1051 return; 1052 } 1053 1054 /* report the usage code as scancode if the key status has changed */ 1055 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value) 1056 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1057 1058 input_event(input, usage->type, usage->code, value); 1059 1060 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY)) 1061 input_event(input, usage->type, usage->code, 0); 1062 } 1063 1064 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1065 { 1066 struct hid_input *hidinput; 1067 1068 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1069 return; 1070 1071 list_for_each_entry(hidinput, &hid->inputs, list) 1072 input_sync(hidinput->input); 1073 } 1074 EXPORT_SYMBOL_GPL(hidinput_report_event); 1075 1076 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1077 { 1078 struct hid_report *report; 1079 int i, j; 1080 1081 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1082 for (i = 0; i < report->maxfield; i++) { 1083 *field = report->field[i]; 1084 for (j = 0; j < (*field)->maxusage; j++) 1085 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1086 return j; 1087 } 1088 } 1089 return -1; 1090 } 1091 EXPORT_SYMBOL_GPL(hidinput_find_field); 1092 1093 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1094 { 1095 struct hid_report *report; 1096 struct hid_field *field; 1097 int i, j; 1098 1099 list_for_each_entry(report, 1100 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1101 list) { 1102 for (i = 0; i < report->maxfield; i++) { 1103 field = report->field[i]; 1104 for (j = 0; j < field->maxusage; j++) 1105 if (field->usage[j].type == EV_LED) 1106 return field; 1107 } 1108 } 1109 return NULL; 1110 } 1111 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1112 1113 unsigned int hidinput_count_leds(struct hid_device *hid) 1114 { 1115 struct hid_report *report; 1116 struct hid_field *field; 1117 int i, j; 1118 unsigned int count = 0; 1119 1120 list_for_each_entry(report, 1121 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1122 list) { 1123 for (i = 0; i < report->maxfield; i++) { 1124 field = report->field[i]; 1125 for (j = 0; j < field->maxusage; j++) 1126 if (field->usage[j].type == EV_LED && 1127 field->value[j]) 1128 count += 1; 1129 } 1130 } 1131 return count; 1132 } 1133 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1134 1135 static int hidinput_open(struct input_dev *dev) 1136 { 1137 struct hid_device *hid = input_get_drvdata(dev); 1138 1139 return hid_hw_open(hid); 1140 } 1141 1142 static void hidinput_close(struct input_dev *dev) 1143 { 1144 struct hid_device *hid = input_get_drvdata(dev); 1145 1146 hid_hw_close(hid); 1147 } 1148 1149 static void report_features(struct hid_device *hid) 1150 { 1151 struct hid_driver *drv = hid->driver; 1152 struct hid_report_enum *rep_enum; 1153 struct hid_report *rep; 1154 int i, j; 1155 1156 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1157 list_for_each_entry(rep, &rep_enum->report_list, list) 1158 for (i = 0; i < rep->maxfield; i++) 1159 for (j = 0; j < rep->field[i]->maxusage; j++) { 1160 /* Verify if Battery Strength feature is available */ 1161 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]); 1162 1163 if (drv->feature_mapping) 1164 drv->feature_mapping(hid, rep->field[i], 1165 rep->field[i]->usage + j); 1166 } 1167 } 1168 1169 static struct hid_input *hidinput_allocate(struct hid_device *hid) 1170 { 1171 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1172 struct input_dev *input_dev = input_allocate_device(); 1173 if (!hidinput || !input_dev) { 1174 kfree(hidinput); 1175 input_free_device(input_dev); 1176 hid_err(hid, "Out of memory during hid input probe\n"); 1177 return NULL; 1178 } 1179 1180 input_set_drvdata(input_dev, hid); 1181 input_dev->event = hid->ll_driver->hidinput_input_event; 1182 input_dev->open = hidinput_open; 1183 input_dev->close = hidinput_close; 1184 input_dev->setkeycode = hidinput_setkeycode; 1185 input_dev->getkeycode = hidinput_getkeycode; 1186 1187 input_dev->name = hid->name; 1188 input_dev->phys = hid->phys; 1189 input_dev->uniq = hid->uniq; 1190 input_dev->id.bustype = hid->bus; 1191 input_dev->id.vendor = hid->vendor; 1192 input_dev->id.product = hid->product; 1193 input_dev->id.version = hid->version; 1194 input_dev->dev.parent = hid->dev.parent; 1195 hidinput->input = input_dev; 1196 list_add_tail(&hidinput->list, &hid->inputs); 1197 1198 return hidinput; 1199 } 1200 1201 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1202 { 1203 int i; 1204 unsigned long r = 0; 1205 1206 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1207 r |= hidinput->input->evbit[i]; 1208 1209 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1210 r |= hidinput->input->keybit[i]; 1211 1212 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1213 r |= hidinput->input->relbit[i]; 1214 1215 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1216 r |= hidinput->input->absbit[i]; 1217 1218 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1219 r |= hidinput->input->mscbit[i]; 1220 1221 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1222 r |= hidinput->input->ledbit[i]; 1223 1224 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1225 r |= hidinput->input->sndbit[i]; 1226 1227 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1228 r |= hidinput->input->ffbit[i]; 1229 1230 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1231 r |= hidinput->input->swbit[i]; 1232 1233 return !!r; 1234 } 1235 1236 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1237 struct hid_input *hidinput) 1238 { 1239 struct hid_report *report; 1240 int i, k; 1241 1242 list_del(&hidinput->list); 1243 input_free_device(hidinput->input); 1244 1245 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1246 if (k == HID_OUTPUT_REPORT && 1247 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1248 continue; 1249 1250 list_for_each_entry(report, &hid->report_enum[k].report_list, 1251 list) { 1252 1253 for (i = 0; i < report->maxfield; i++) 1254 if (report->field[i]->hidinput == hidinput) 1255 report->field[i]->hidinput = NULL; 1256 } 1257 } 1258 1259 kfree(hidinput); 1260 } 1261 1262 /* 1263 * Register the input device; print a message. 1264 * Configure the input layer interface 1265 * Read all reports and initialize the absolute field values. 1266 */ 1267 1268 int hidinput_connect(struct hid_device *hid, unsigned int force) 1269 { 1270 struct hid_driver *drv = hid->driver; 1271 struct hid_report *report; 1272 struct hid_input *hidinput = NULL; 1273 int i, j, k; 1274 1275 INIT_LIST_HEAD(&hid->inputs); 1276 1277 if (!force) { 1278 for (i = 0; i < hid->maxcollection; i++) { 1279 struct hid_collection *col = &hid->collection[i]; 1280 if (col->type == HID_COLLECTION_APPLICATION || 1281 col->type == HID_COLLECTION_PHYSICAL) 1282 if (IS_INPUT_APPLICATION(col->usage)) 1283 break; 1284 } 1285 1286 if (i == hid->maxcollection) 1287 return -1; 1288 } 1289 1290 report_features(hid); 1291 1292 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1293 if (k == HID_OUTPUT_REPORT && 1294 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1295 continue; 1296 1297 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1298 1299 if (!report->maxfield) 1300 continue; 1301 1302 if (!hidinput) { 1303 hidinput = hidinput_allocate(hid); 1304 if (!hidinput) 1305 goto out_unwind; 1306 } 1307 1308 for (i = 0; i < report->maxfield; i++) 1309 for (j = 0; j < report->field[i]->maxusage; j++) 1310 hidinput_configure_usage(hidinput, report->field[i], 1311 report->field[i]->usage + j); 1312 1313 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) && 1314 !hidinput_has_been_populated(hidinput)) 1315 continue; 1316 1317 if (hid->quirks & HID_QUIRK_MULTI_INPUT) { 1318 /* This will leave hidinput NULL, so that it 1319 * allocates another one if we have more inputs on 1320 * the same interface. Some devices (e.g. Happ's 1321 * UGCI) cram a lot of unrelated inputs into the 1322 * same interface. */ 1323 hidinput->report = report; 1324 if (drv->input_configured) 1325 drv->input_configured(hid, hidinput); 1326 if (input_register_device(hidinput->input)) 1327 goto out_cleanup; 1328 hidinput = NULL; 1329 } 1330 } 1331 } 1332 1333 if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) && 1334 !hidinput_has_been_populated(hidinput)) { 1335 /* no need to register an input device not populated */ 1336 hidinput_cleanup_hidinput(hid, hidinput); 1337 hidinput = NULL; 1338 } 1339 1340 if (list_empty(&hid->inputs)) { 1341 hid_err(hid, "No inputs registered, leaving\n"); 1342 goto out_unwind; 1343 } 1344 1345 if (hidinput) { 1346 if (drv->input_configured) 1347 drv->input_configured(hid, hidinput); 1348 if (input_register_device(hidinput->input)) 1349 goto out_cleanup; 1350 } 1351 1352 return 0; 1353 1354 out_cleanup: 1355 list_del(&hidinput->list); 1356 input_free_device(hidinput->input); 1357 kfree(hidinput); 1358 out_unwind: 1359 /* unwind the ones we already registered */ 1360 hidinput_disconnect(hid); 1361 1362 return -1; 1363 } 1364 EXPORT_SYMBOL_GPL(hidinput_connect); 1365 1366 void hidinput_disconnect(struct hid_device *hid) 1367 { 1368 struct hid_input *hidinput, *next; 1369 1370 hidinput_cleanup_battery(hid); 1371 1372 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1373 list_del(&hidinput->list); 1374 input_unregister_device(hidinput->input); 1375 kfree(hidinput); 1376 } 1377 } 1378 EXPORT_SYMBOL_GPL(hidinput_disconnect); 1379 1380