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_TILT_X: 257 case ABS_TILT_Y: 258 if (field->unit == 0x14) { /* If degrees */ 259 /* Convert to radians */ 260 prev = logical_extents; 261 logical_extents *= 573; 262 if (logical_extents < prev) 263 return 0; 264 unit_exponent += 1; 265 } else if (field->unit != 0x12) { /* If not radians */ 266 return 0; 267 } 268 break; 269 270 default: 271 return 0; 272 } 273 274 /* Apply negative unit exponent */ 275 for (; unit_exponent < 0; unit_exponent++) { 276 prev = logical_extents; 277 logical_extents *= 10; 278 if (logical_extents < prev) 279 return 0; 280 } 281 /* Apply positive unit exponent */ 282 for (; unit_exponent > 0; unit_exponent--) { 283 prev = physical_extents; 284 physical_extents *= 10; 285 if (physical_extents < prev) 286 return 0; 287 } 288 289 /* Calculate resolution */ 290 return DIV_ROUND_CLOSEST(logical_extents, physical_extents); 291 } 292 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res); 293 294 #ifdef CONFIG_HID_BATTERY_STRENGTH 295 static enum power_supply_property hidinput_battery_props[] = { 296 POWER_SUPPLY_PROP_PRESENT, 297 POWER_SUPPLY_PROP_ONLINE, 298 POWER_SUPPLY_PROP_CAPACITY, 299 POWER_SUPPLY_PROP_MODEL_NAME, 300 POWER_SUPPLY_PROP_STATUS, 301 POWER_SUPPLY_PROP_SCOPE, 302 }; 303 304 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */ 305 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */ 306 307 static const struct hid_device_id hid_battery_quirks[] = { 308 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 309 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO), 310 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 311 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 312 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI), 313 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 314 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 315 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI), 316 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 317 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 318 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO), 319 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 320 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 321 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI), 322 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 323 {} 324 }; 325 326 static unsigned find_battery_quirk(struct hid_device *hdev) 327 { 328 unsigned quirks = 0; 329 const struct hid_device_id *match; 330 331 match = hid_match_id(hdev, hid_battery_quirks); 332 if (match != NULL) 333 quirks = match->driver_data; 334 335 return quirks; 336 } 337 338 static int hidinput_get_battery_property(struct power_supply *psy, 339 enum power_supply_property prop, 340 union power_supply_propval *val) 341 { 342 struct hid_device *dev = power_supply_get_drvdata(psy); 343 int ret = 0; 344 __u8 *buf; 345 346 switch (prop) { 347 case POWER_SUPPLY_PROP_PRESENT: 348 case POWER_SUPPLY_PROP_ONLINE: 349 val->intval = 1; 350 break; 351 352 case POWER_SUPPLY_PROP_CAPACITY: 353 354 buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL); 355 if (!buf) { 356 ret = -ENOMEM; 357 break; 358 } 359 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2, 360 dev->battery_report_type, 361 HID_REQ_GET_REPORT); 362 363 if (ret != 2) { 364 ret = -ENODATA; 365 kfree(buf); 366 break; 367 } 368 ret = 0; 369 370 if (dev->battery_min < dev->battery_max && 371 buf[1] >= dev->battery_min && 372 buf[1] <= dev->battery_max) 373 val->intval = (100 * (buf[1] - dev->battery_min)) / 374 (dev->battery_max - dev->battery_min); 375 kfree(buf); 376 break; 377 378 case POWER_SUPPLY_PROP_MODEL_NAME: 379 val->strval = dev->name; 380 break; 381 382 case POWER_SUPPLY_PROP_STATUS: 383 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 384 break; 385 386 case POWER_SUPPLY_PROP_SCOPE: 387 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 388 break; 389 390 default: 391 ret = -EINVAL; 392 break; 393 } 394 395 return ret; 396 } 397 398 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field) 399 { 400 struct power_supply_desc *psy_desc = NULL; 401 struct power_supply_config psy_cfg = { .drv_data = dev, }; 402 unsigned quirks; 403 s32 min, max; 404 405 if (field->usage->hid != HID_DC_BATTERYSTRENGTH) 406 return false; /* no match */ 407 408 if (dev->battery != NULL) 409 goto out; /* already initialized? */ 410 411 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); 412 if (psy_desc == NULL) 413 goto out; 414 415 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq); 416 if (psy_desc->name == NULL) { 417 kfree(psy_desc); 418 goto out; 419 } 420 421 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 422 psy_desc->properties = hidinput_battery_props; 423 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); 424 psy_desc->use_for_apm = 0; 425 psy_desc->get_property = hidinput_get_battery_property; 426 427 quirks = find_battery_quirk(dev); 428 429 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 430 dev->bus, dev->vendor, dev->product, dev->version, quirks); 431 432 min = field->logical_minimum; 433 max = field->logical_maximum; 434 435 if (quirks & HID_BATTERY_QUIRK_PERCENT) { 436 min = 0; 437 max = 100; 438 } 439 440 if (quirks & HID_BATTERY_QUIRK_FEATURE) 441 report_type = HID_FEATURE_REPORT; 442 443 dev->battery_min = min; 444 dev->battery_max = max; 445 dev->battery_report_type = report_type; 446 dev->battery_report_id = field->report->id; 447 448 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); 449 if (IS_ERR(dev->battery)) { 450 hid_warn(dev, "can't register power supply: %ld\n", 451 PTR_ERR(dev->battery)); 452 kfree(psy_desc->name); 453 kfree(psy_desc); 454 dev->battery = NULL; 455 } else { 456 power_supply_powers(dev->battery, &dev->dev); 457 } 458 459 out: 460 return true; 461 } 462 463 static void hidinput_cleanup_battery(struct hid_device *dev) 464 { 465 const struct power_supply_desc *psy_desc; 466 467 if (!dev->battery) 468 return; 469 470 psy_desc = dev->battery->desc; 471 power_supply_unregister(dev->battery); 472 kfree(psy_desc->name); 473 kfree(psy_desc); 474 dev->battery = NULL; 475 } 476 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 477 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 478 struct hid_field *field) 479 { 480 return false; 481 } 482 483 static void hidinput_cleanup_battery(struct hid_device *dev) 484 { 485 } 486 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 487 488 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 489 struct hid_usage *usage) 490 { 491 struct input_dev *input = hidinput->input; 492 struct hid_device *device = input_get_drvdata(input); 493 int max = 0, code; 494 unsigned long *bit = NULL; 495 496 field->hidinput = hidinput; 497 498 if (field->flags & HID_MAIN_ITEM_CONSTANT) 499 goto ignore; 500 501 /* Ignore if report count is out of bounds. */ 502 if (field->report_count < 1) 503 goto ignore; 504 505 /* only LED usages are supported in output fields */ 506 if (field->report_type == HID_OUTPUT_REPORT && 507 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 508 goto ignore; 509 } 510 511 if (device->driver->input_mapping) { 512 int ret = device->driver->input_mapping(device, hidinput, field, 513 usage, &bit, &max); 514 if (ret > 0) 515 goto mapped; 516 if (ret < 0) 517 goto ignore; 518 } 519 520 switch (usage->hid & HID_USAGE_PAGE) { 521 case HID_UP_UNDEFINED: 522 goto ignore; 523 524 case HID_UP_KEYBOARD: 525 set_bit(EV_REP, input->evbit); 526 527 if ((usage->hid & HID_USAGE) < 256) { 528 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 529 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 530 } else 531 map_key(KEY_UNKNOWN); 532 533 break; 534 535 case HID_UP_BUTTON: 536 code = ((usage->hid - 1) & HID_USAGE); 537 538 switch (field->application) { 539 case HID_GD_MOUSE: 540 case HID_GD_POINTER: code += BTN_MOUSE; break; 541 case HID_GD_JOYSTICK: 542 if (code <= 0xf) 543 code += BTN_JOYSTICK; 544 else 545 code += BTN_TRIGGER_HAPPY - 0x10; 546 break; 547 case HID_GD_GAMEPAD: 548 if (code <= 0xf) 549 code += BTN_GAMEPAD; 550 else 551 code += BTN_TRIGGER_HAPPY - 0x10; 552 break; 553 default: 554 switch (field->physical) { 555 case HID_GD_MOUSE: 556 case HID_GD_POINTER: code += BTN_MOUSE; break; 557 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 558 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 559 default: code += BTN_MISC; 560 } 561 } 562 563 map_key(code); 564 break; 565 566 case HID_UP_SIMULATION: 567 switch (usage->hid & 0xffff) { 568 case 0xba: map_abs(ABS_RUDDER); break; 569 case 0xbb: map_abs(ABS_THROTTLE); break; 570 case 0xc4: map_abs(ABS_GAS); break; 571 case 0xc5: map_abs(ABS_BRAKE); break; 572 case 0xc8: map_abs(ABS_WHEEL); break; 573 default: goto ignore; 574 } 575 break; 576 577 case HID_UP_GENDESK: 578 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 579 switch (usage->hid & 0xf) { 580 case 0x1: map_key_clear(KEY_POWER); break; 581 case 0x2: map_key_clear(KEY_SLEEP); break; 582 case 0x3: map_key_clear(KEY_WAKEUP); break; 583 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 584 case 0x5: map_key_clear(KEY_MENU); break; 585 case 0x6: map_key_clear(KEY_PROG1); break; 586 case 0x7: map_key_clear(KEY_HELP); break; 587 case 0x8: map_key_clear(KEY_EXIT); break; 588 case 0x9: map_key_clear(KEY_SELECT); break; 589 case 0xa: map_key_clear(KEY_RIGHT); break; 590 case 0xb: map_key_clear(KEY_LEFT); break; 591 case 0xc: map_key_clear(KEY_UP); break; 592 case 0xd: map_key_clear(KEY_DOWN); break; 593 case 0xe: map_key_clear(KEY_POWER2); break; 594 case 0xf: map_key_clear(KEY_RESTART); break; 595 default: goto unknown; 596 } 597 break; 598 } 599 600 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 601 switch (usage->hid) { 602 case HID_GD_UP: usage->hat_dir = 1; break; 603 case HID_GD_DOWN: usage->hat_dir = 5; break; 604 case HID_GD_RIGHT: usage->hat_dir = 3; break; 605 case HID_GD_LEFT: usage->hat_dir = 7; break; 606 default: goto unknown; 607 } 608 if (field->dpad) { 609 map_abs(field->dpad); 610 goto ignore; 611 } 612 map_abs(ABS_HAT0X); 613 break; 614 } 615 616 switch (usage->hid) { 617 /* These usage IDs map directly to the usage codes. */ 618 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 619 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 620 if (field->flags & HID_MAIN_ITEM_RELATIVE) 621 map_rel(usage->hid & 0xf); 622 else 623 map_abs_clear(usage->hid & 0xf); 624 break; 625 626 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL: 627 if (field->flags & HID_MAIN_ITEM_RELATIVE) 628 map_rel(usage->hid & 0xf); 629 else 630 map_abs(usage->hid & 0xf); 631 break; 632 633 case HID_GD_HATSWITCH: 634 usage->hat_min = field->logical_minimum; 635 usage->hat_max = field->logical_maximum; 636 map_abs(ABS_HAT0X); 637 break; 638 639 case HID_GD_START: map_key_clear(BTN_START); break; 640 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 641 642 default: goto unknown; 643 } 644 645 break; 646 647 case HID_UP_LED: 648 switch (usage->hid & 0xffff) { /* HID-Value: */ 649 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 650 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 651 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 652 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 653 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 654 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 655 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 656 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 657 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 658 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 659 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 660 661 default: goto ignore; 662 } 663 break; 664 665 case HID_UP_DIGITIZER: 666 switch (usage->hid & 0xff) { 667 case 0x00: /* Undefined */ 668 goto ignore; 669 670 case 0x30: /* TipPressure */ 671 if (!test_bit(BTN_TOUCH, input->keybit)) { 672 device->quirks |= HID_QUIRK_NOTOUCH; 673 set_bit(EV_KEY, input->evbit); 674 set_bit(BTN_TOUCH, input->keybit); 675 } 676 map_abs_clear(ABS_PRESSURE); 677 break; 678 679 case 0x32: /* InRange */ 680 switch (field->physical & 0xff) { 681 case 0x21: map_key(BTN_TOOL_MOUSE); break; 682 case 0x22: map_key(BTN_TOOL_FINGER); break; 683 default: map_key(BTN_TOOL_PEN); break; 684 } 685 break; 686 687 case 0x3c: /* Invert */ 688 map_key_clear(BTN_TOOL_RUBBER); 689 break; 690 691 case 0x3d: /* X Tilt */ 692 map_abs_clear(ABS_TILT_X); 693 break; 694 695 case 0x3e: /* Y Tilt */ 696 map_abs_clear(ABS_TILT_Y); 697 break; 698 699 case 0x33: /* Touch */ 700 case 0x42: /* TipSwitch */ 701 case 0x43: /* TipSwitch2 */ 702 device->quirks &= ~HID_QUIRK_NOTOUCH; 703 map_key_clear(BTN_TOUCH); 704 break; 705 706 case 0x44: /* BarrelSwitch */ 707 map_key_clear(BTN_STYLUS); 708 break; 709 710 case 0x46: /* TabletPick */ 711 case 0x5a: /* SecondaryBarrelSwitch */ 712 map_key_clear(BTN_STYLUS2); 713 break; 714 715 case 0x5b: /* TransducerSerialNumber */ 716 usage->type = EV_MSC; 717 usage->code = MSC_SERIAL; 718 bit = input->mscbit; 719 max = MSC_MAX; 720 break; 721 722 default: goto unknown; 723 } 724 break; 725 726 case HID_UP_TELEPHONY: 727 switch (usage->hid & HID_USAGE) { 728 case 0x2f: map_key_clear(KEY_MICMUTE); break; 729 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 730 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 731 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 732 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 733 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 734 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 735 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 736 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 737 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 738 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 739 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 740 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 741 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 742 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 743 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 744 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 745 default: goto ignore; 746 } 747 break; 748 749 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 750 switch (usage->hid & HID_USAGE) { 751 case 0x000: goto ignore; 752 case 0x030: map_key_clear(KEY_POWER); break; 753 case 0x031: map_key_clear(KEY_RESTART); break; 754 case 0x032: map_key_clear(KEY_SLEEP); break; 755 case 0x034: map_key_clear(KEY_SLEEP); break; 756 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 757 case 0x036: map_key_clear(BTN_MISC); break; 758 759 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 760 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 761 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 762 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 763 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 764 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 765 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 766 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 767 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 768 769 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 770 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 771 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 772 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 773 case 0x069: map_key_clear(KEY_RED); break; 774 case 0x06a: map_key_clear(KEY_GREEN); break; 775 case 0x06b: map_key_clear(KEY_BLUE); break; 776 case 0x06c: map_key_clear(KEY_YELLOW); break; 777 case 0x06d: map_key_clear(KEY_ZOOM); break; 778 779 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 780 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 781 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 782 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 783 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 784 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 785 786 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 787 case 0x083: map_key_clear(KEY_LAST); break; 788 case 0x084: map_key_clear(KEY_ENTER); break; 789 case 0x088: map_key_clear(KEY_PC); break; 790 case 0x089: map_key_clear(KEY_TV); break; 791 case 0x08a: map_key_clear(KEY_WWW); break; 792 case 0x08b: map_key_clear(KEY_DVD); break; 793 case 0x08c: map_key_clear(KEY_PHONE); break; 794 case 0x08d: map_key_clear(KEY_PROGRAM); break; 795 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 796 case 0x08f: map_key_clear(KEY_GAMES); break; 797 case 0x090: map_key_clear(KEY_MEMO); break; 798 case 0x091: map_key_clear(KEY_CD); break; 799 case 0x092: map_key_clear(KEY_VCR); break; 800 case 0x093: map_key_clear(KEY_TUNER); break; 801 case 0x094: map_key_clear(KEY_EXIT); break; 802 case 0x095: map_key_clear(KEY_HELP); break; 803 case 0x096: map_key_clear(KEY_TAPE); break; 804 case 0x097: map_key_clear(KEY_TV2); break; 805 case 0x098: map_key_clear(KEY_SAT); break; 806 case 0x09a: map_key_clear(KEY_PVR); break; 807 808 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 809 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 810 case 0x0a0: map_key_clear(KEY_VCR2); break; 811 812 case 0x0b0: map_key_clear(KEY_PLAY); break; 813 case 0x0b1: map_key_clear(KEY_PAUSE); break; 814 case 0x0b2: map_key_clear(KEY_RECORD); break; 815 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 816 case 0x0b4: map_key_clear(KEY_REWIND); break; 817 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 818 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 819 case 0x0b7: map_key_clear(KEY_STOPCD); break; 820 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 821 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 822 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 823 case 0x0bf: map_key_clear(KEY_SLOW); break; 824 825 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 826 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 827 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 828 case 0x0e2: map_key_clear(KEY_MUTE); break; 829 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 830 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 831 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 832 case 0x0f5: map_key_clear(KEY_SLOW); break; 833 834 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 835 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 836 case 0x183: map_key_clear(KEY_CONFIG); break; 837 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 838 case 0x185: map_key_clear(KEY_EDITOR); break; 839 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 840 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 841 case 0x188: map_key_clear(KEY_PRESENTATION); break; 842 case 0x189: map_key_clear(KEY_DATABASE); break; 843 case 0x18a: map_key_clear(KEY_MAIL); break; 844 case 0x18b: map_key_clear(KEY_NEWS); break; 845 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 846 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 847 case 0x18e: map_key_clear(KEY_CALENDAR); break; 848 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 849 case 0x190: map_key_clear(KEY_JOURNAL); break; 850 case 0x191: map_key_clear(KEY_FINANCE); break; 851 case 0x192: map_key_clear(KEY_CALC); break; 852 case 0x193: map_key_clear(KEY_PLAYER); break; 853 case 0x194: map_key_clear(KEY_FILE); break; 854 case 0x196: map_key_clear(KEY_WWW); break; 855 case 0x199: map_key_clear(KEY_CHAT); break; 856 case 0x19c: map_key_clear(KEY_LOGOFF); break; 857 case 0x19e: map_key_clear(KEY_COFFEE); break; 858 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 859 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 860 case 0x1a3: map_key_clear(KEY_NEXT); break; 861 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 862 case 0x1a6: map_key_clear(KEY_HELP); break; 863 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 864 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 865 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 866 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 867 case 0x1b4: map_key_clear(KEY_FILE); break; 868 case 0x1b6: map_key_clear(KEY_IMAGES); break; 869 case 0x1b7: map_key_clear(KEY_AUDIO); break; 870 case 0x1b8: map_key_clear(KEY_VIDEO); break; 871 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 872 case 0x1bd: map_key_clear(KEY_INFO); break; 873 case 0x201: map_key_clear(KEY_NEW); break; 874 case 0x202: map_key_clear(KEY_OPEN); break; 875 case 0x203: map_key_clear(KEY_CLOSE); break; 876 case 0x204: map_key_clear(KEY_EXIT); break; 877 case 0x207: map_key_clear(KEY_SAVE); break; 878 case 0x208: map_key_clear(KEY_PRINT); break; 879 case 0x209: map_key_clear(KEY_PROPS); break; 880 case 0x21a: map_key_clear(KEY_UNDO); break; 881 case 0x21b: map_key_clear(KEY_COPY); break; 882 case 0x21c: map_key_clear(KEY_CUT); break; 883 case 0x21d: map_key_clear(KEY_PASTE); break; 884 case 0x21f: map_key_clear(KEY_FIND); break; 885 case 0x221: map_key_clear(KEY_SEARCH); break; 886 case 0x222: map_key_clear(KEY_GOTO); break; 887 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 888 case 0x224: map_key_clear(KEY_BACK); break; 889 case 0x225: map_key_clear(KEY_FORWARD); break; 890 case 0x226: map_key_clear(KEY_STOP); break; 891 case 0x227: map_key_clear(KEY_REFRESH); break; 892 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 893 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 894 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 895 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 896 case 0x233: map_key_clear(KEY_SCROLLUP); break; 897 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 898 case 0x238: map_rel(REL_HWHEEL); break; 899 case 0x23d: map_key_clear(KEY_EDIT); break; 900 case 0x25f: map_key_clear(KEY_CANCEL); break; 901 case 0x269: map_key_clear(KEY_INSERT); break; 902 case 0x26a: map_key_clear(KEY_DELETE); break; 903 case 0x279: map_key_clear(KEY_REDO); break; 904 905 case 0x289: map_key_clear(KEY_REPLY); break; 906 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 907 case 0x28c: map_key_clear(KEY_SEND); break; 908 909 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 910 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 911 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 912 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 913 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 914 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 915 916 default: map_key_clear(KEY_UNKNOWN); 917 } 918 break; 919 920 case HID_UP_GENDEVCTRLS: 921 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field)) 922 goto ignore; 923 else 924 goto unknown; 925 break; 926 927 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 928 set_bit(EV_REP, input->evbit); 929 switch (usage->hid & HID_USAGE) { 930 case 0x021: map_key_clear(KEY_PRINT); break; 931 case 0x070: map_key_clear(KEY_HP); break; 932 case 0x071: map_key_clear(KEY_CAMERA); break; 933 case 0x072: map_key_clear(KEY_SOUND); break; 934 case 0x073: map_key_clear(KEY_QUESTION); break; 935 case 0x080: map_key_clear(KEY_EMAIL); break; 936 case 0x081: map_key_clear(KEY_CHAT); break; 937 case 0x082: map_key_clear(KEY_SEARCH); break; 938 case 0x083: map_key_clear(KEY_CONNECT); break; 939 case 0x084: map_key_clear(KEY_FINANCE); break; 940 case 0x085: map_key_clear(KEY_SPORT); break; 941 case 0x086: map_key_clear(KEY_SHOP); break; 942 default: goto ignore; 943 } 944 break; 945 946 case HID_UP_HPVENDOR2: 947 set_bit(EV_REP, input->evbit); 948 switch (usage->hid & HID_USAGE) { 949 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 950 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 951 default: goto ignore; 952 } 953 break; 954 955 case HID_UP_MSVENDOR: 956 goto ignore; 957 958 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 959 set_bit(EV_REP, input->evbit); 960 goto ignore; 961 962 case HID_UP_LOGIVENDOR: 963 goto ignore; 964 965 case HID_UP_PID: 966 switch (usage->hid & HID_USAGE) { 967 case 0xa4: map_key_clear(BTN_DEAD); break; 968 default: goto ignore; 969 } 970 break; 971 972 default: 973 unknown: 974 if (field->report_size == 1) { 975 if (field->report->type == HID_OUTPUT_REPORT) { 976 map_led(LED_MISC); 977 break; 978 } 979 map_key(BTN_MISC); 980 break; 981 } 982 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 983 map_rel(REL_MISC); 984 break; 985 } 986 map_abs(ABS_MISC); 987 break; 988 } 989 990 mapped: 991 if (device->driver->input_mapped && device->driver->input_mapped(device, 992 hidinput, field, usage, &bit, &max) < 0) 993 goto ignore; 994 995 set_bit(usage->type, input->evbit); 996 997 while (usage->code <= max && test_and_set_bit(usage->code, bit)) 998 usage->code = find_next_zero_bit(bit, max + 1, usage->code); 999 1000 if (usage->code > max) 1001 goto ignore; 1002 1003 1004 if (usage->type == EV_ABS) { 1005 1006 int a = field->logical_minimum; 1007 int b = field->logical_maximum; 1008 1009 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1010 a = field->logical_minimum = 0; 1011 b = field->logical_maximum = 255; 1012 } 1013 1014 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1015 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1016 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1017 1018 input_abs_set_res(input, usage->code, 1019 hidinput_calc_abs_res(field, usage->code)); 1020 1021 /* use a larger default input buffer for MT devices */ 1022 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1023 input_set_events_per_packet(input, 60); 1024 } 1025 1026 if (usage->type == EV_ABS && 1027 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1028 int i; 1029 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1030 input_set_abs_params(input, i, -1, 1, 0, 0); 1031 set_bit(i, input->absbit); 1032 } 1033 if (usage->hat_dir && !field->dpad) 1034 field->dpad = usage->code; 1035 } 1036 1037 /* for those devices which produce Consumer volume usage as relative, 1038 * we emulate pressing volumeup/volumedown appropriate number of times 1039 * in hidinput_hid_event() 1040 */ 1041 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1042 (usage->code == ABS_VOLUME)) { 1043 set_bit(KEY_VOLUMEUP, input->keybit); 1044 set_bit(KEY_VOLUMEDOWN, input->keybit); 1045 } 1046 1047 if (usage->type == EV_KEY) { 1048 set_bit(EV_MSC, input->evbit); 1049 set_bit(MSC_SCAN, input->mscbit); 1050 } 1051 1052 ignore: 1053 return; 1054 1055 } 1056 1057 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1058 { 1059 struct input_dev *input; 1060 unsigned *quirks = &hid->quirks; 1061 1062 if (!field->hidinput) 1063 return; 1064 1065 input = field->hidinput->input; 1066 1067 if (!usage->type) 1068 return; 1069 1070 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1071 int hat_dir = usage->hat_dir; 1072 if (!hat_dir) 1073 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1074 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1075 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1076 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1077 return; 1078 } 1079 1080 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 1081 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1082 return; 1083 } 1084 1085 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 1086 if (value) { 1087 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1088 return; 1089 } 1090 input_event(input, usage->type, usage->code, 0); 1091 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1092 return; 1093 } 1094 1095 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 1096 int a = field->logical_minimum; 1097 int b = field->logical_maximum; 1098 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1099 } 1100 1101 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1102 dbg_hid("Maximum Effects - %d\n",value); 1103 return; 1104 } 1105 1106 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1107 dbg_hid("PID Pool Report\n"); 1108 return; 1109 } 1110 1111 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1112 return; 1113 1114 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1115 (usage->code == ABS_VOLUME)) { 1116 int count = abs(value); 1117 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1118 int i; 1119 1120 for (i = 0; i < count; i++) { 1121 input_event(input, EV_KEY, direction, 1); 1122 input_sync(input); 1123 input_event(input, EV_KEY, direction, 0); 1124 input_sync(input); 1125 } 1126 return; 1127 } 1128 1129 /* 1130 * Ignore out-of-range values as per HID specification, 1131 * section 5.10 and 6.2.25. 1132 * 1133 * The logical_minimum < logical_maximum check is done so that we 1134 * don't unintentionally discard values sent by devices which 1135 * don't specify logical min and max. 1136 */ 1137 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1138 (field->logical_minimum < field->logical_maximum) && 1139 (value < field->logical_minimum || 1140 value > field->logical_maximum)) { 1141 dbg_hid("Ignoring out-of-range value %x\n", value); 1142 return; 1143 } 1144 1145 /* 1146 * Ignore reports for absolute data if the data didn't change. This is 1147 * not only an optimization but also fixes 'dead' key reports. Some 1148 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1149 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1150 * can only have one of them physically available. The 'dead' keys 1151 * report constant 0. As all map to the same keycode, they'd confuse 1152 * the input layer. If we filter the 'dead' keys on the HID level, we 1153 * skip the keycode translation and only forward real events. 1154 */ 1155 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1156 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1157 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1158 usage->usage_index < field->maxusage && 1159 value == field->value[usage->usage_index]) 1160 return; 1161 1162 /* report the usage code as scancode if the key status has changed */ 1163 if (usage->type == EV_KEY && 1164 (!test_bit(usage->code, input->key)) == value) 1165 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1166 1167 input_event(input, usage->type, usage->code, value); 1168 1169 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1170 usage->type == EV_KEY && value) { 1171 input_sync(input); 1172 input_event(input, usage->type, usage->code, 0); 1173 } 1174 } 1175 1176 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1177 { 1178 struct hid_input *hidinput; 1179 1180 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1181 return; 1182 1183 list_for_each_entry(hidinput, &hid->inputs, list) 1184 input_sync(hidinput->input); 1185 } 1186 EXPORT_SYMBOL_GPL(hidinput_report_event); 1187 1188 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1189 { 1190 struct hid_report *report; 1191 int i, j; 1192 1193 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1194 for (i = 0; i < report->maxfield; i++) { 1195 *field = report->field[i]; 1196 for (j = 0; j < (*field)->maxusage; j++) 1197 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1198 return j; 1199 } 1200 } 1201 return -1; 1202 } 1203 EXPORT_SYMBOL_GPL(hidinput_find_field); 1204 1205 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1206 { 1207 struct hid_report *report; 1208 struct hid_field *field; 1209 int i, j; 1210 1211 list_for_each_entry(report, 1212 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1213 list) { 1214 for (i = 0; i < report->maxfield; i++) { 1215 field = report->field[i]; 1216 for (j = 0; j < field->maxusage; j++) 1217 if (field->usage[j].type == EV_LED) 1218 return field; 1219 } 1220 } 1221 return NULL; 1222 } 1223 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1224 1225 unsigned int hidinput_count_leds(struct hid_device *hid) 1226 { 1227 struct hid_report *report; 1228 struct hid_field *field; 1229 int i, j; 1230 unsigned int count = 0; 1231 1232 list_for_each_entry(report, 1233 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1234 list) { 1235 for (i = 0; i < report->maxfield; i++) { 1236 field = report->field[i]; 1237 for (j = 0; j < field->maxusage; j++) 1238 if (field->usage[j].type == EV_LED && 1239 field->value[j]) 1240 count += 1; 1241 } 1242 } 1243 return count; 1244 } 1245 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1246 1247 static void hidinput_led_worker(struct work_struct *work) 1248 { 1249 struct hid_device *hid = container_of(work, struct hid_device, 1250 led_work); 1251 struct hid_field *field; 1252 struct hid_report *report; 1253 int len, ret; 1254 __u8 *buf; 1255 1256 field = hidinput_get_led_field(hid); 1257 if (!field) 1258 return; 1259 1260 /* 1261 * field->report is accessed unlocked regarding HID core. So there might 1262 * be another incoming SET-LED request from user-space, which changes 1263 * the LED state while we assemble our outgoing buffer. However, this 1264 * doesn't matter as hid_output_report() correctly converts it into a 1265 * boolean value no matter what information is currently set on the LED 1266 * field (even garbage). So the remote device will always get a valid 1267 * request. 1268 * And in case we send a wrong value, a next led worker is spawned 1269 * for every SET-LED request so the following worker will send the 1270 * correct value, guaranteed! 1271 */ 1272 1273 report = field->report; 1274 1275 /* use custom SET_REPORT request if possible (asynchronous) */ 1276 if (hid->ll_driver->request) 1277 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1278 1279 /* fall back to generic raw-output-report */ 1280 len = hid_report_len(report); 1281 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1282 if (!buf) 1283 return; 1284 1285 hid_output_report(report, buf); 1286 /* synchronous output report */ 1287 ret = hid_hw_output_report(hid, buf, len); 1288 if (ret == -ENOSYS) 1289 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1290 HID_REQ_SET_REPORT); 1291 kfree(buf); 1292 } 1293 1294 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1295 unsigned int code, int value) 1296 { 1297 struct hid_device *hid = input_get_drvdata(dev); 1298 struct hid_field *field; 1299 int offset; 1300 1301 if (type == EV_FF) 1302 return input_ff_event(dev, type, code, value); 1303 1304 if (type != EV_LED) 1305 return -1; 1306 1307 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1308 hid_warn(dev, "event field not found\n"); 1309 return -1; 1310 } 1311 1312 hid_set_field(field, offset, value); 1313 1314 schedule_work(&hid->led_work); 1315 return 0; 1316 } 1317 1318 static int hidinput_open(struct input_dev *dev) 1319 { 1320 struct hid_device *hid = input_get_drvdata(dev); 1321 1322 return hid_hw_open(hid); 1323 } 1324 1325 static void hidinput_close(struct input_dev *dev) 1326 { 1327 struct hid_device *hid = input_get_drvdata(dev); 1328 1329 hid_hw_close(hid); 1330 } 1331 1332 static void report_features(struct hid_device *hid) 1333 { 1334 struct hid_driver *drv = hid->driver; 1335 struct hid_report_enum *rep_enum; 1336 struct hid_report *rep; 1337 int i, j; 1338 1339 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1340 list_for_each_entry(rep, &rep_enum->report_list, list) 1341 for (i = 0; i < rep->maxfield; i++) { 1342 /* Ignore if report count is out of bounds. */ 1343 if (rep->field[i]->report_count < 1) 1344 continue; 1345 1346 for (j = 0; j < rep->field[i]->maxusage; j++) { 1347 /* Verify if Battery Strength feature is available */ 1348 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]); 1349 1350 if (drv->feature_mapping) 1351 drv->feature_mapping(hid, rep->field[i], 1352 rep->field[i]->usage + j); 1353 } 1354 } 1355 } 1356 1357 static struct hid_input *hidinput_allocate(struct hid_device *hid) 1358 { 1359 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1360 struct input_dev *input_dev = input_allocate_device(); 1361 if (!hidinput || !input_dev) { 1362 kfree(hidinput); 1363 input_free_device(input_dev); 1364 hid_err(hid, "Out of memory during hid input probe\n"); 1365 return NULL; 1366 } 1367 1368 input_set_drvdata(input_dev, hid); 1369 input_dev->event = hidinput_input_event; 1370 input_dev->open = hidinput_open; 1371 input_dev->close = hidinput_close; 1372 input_dev->setkeycode = hidinput_setkeycode; 1373 input_dev->getkeycode = hidinput_getkeycode; 1374 1375 input_dev->name = hid->name; 1376 input_dev->phys = hid->phys; 1377 input_dev->uniq = hid->uniq; 1378 input_dev->id.bustype = hid->bus; 1379 input_dev->id.vendor = hid->vendor; 1380 input_dev->id.product = hid->product; 1381 input_dev->id.version = hid->version; 1382 input_dev->dev.parent = &hid->dev; 1383 hidinput->input = input_dev; 1384 list_add_tail(&hidinput->list, &hid->inputs); 1385 1386 return hidinput; 1387 } 1388 1389 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1390 { 1391 int i; 1392 unsigned long r = 0; 1393 1394 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1395 r |= hidinput->input->evbit[i]; 1396 1397 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1398 r |= hidinput->input->keybit[i]; 1399 1400 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1401 r |= hidinput->input->relbit[i]; 1402 1403 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1404 r |= hidinput->input->absbit[i]; 1405 1406 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1407 r |= hidinput->input->mscbit[i]; 1408 1409 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1410 r |= hidinput->input->ledbit[i]; 1411 1412 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1413 r |= hidinput->input->sndbit[i]; 1414 1415 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1416 r |= hidinput->input->ffbit[i]; 1417 1418 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1419 r |= hidinput->input->swbit[i]; 1420 1421 return !!r; 1422 } 1423 1424 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1425 struct hid_input *hidinput) 1426 { 1427 struct hid_report *report; 1428 int i, k; 1429 1430 list_del(&hidinput->list); 1431 input_free_device(hidinput->input); 1432 1433 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1434 if (k == HID_OUTPUT_REPORT && 1435 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1436 continue; 1437 1438 list_for_each_entry(report, &hid->report_enum[k].report_list, 1439 list) { 1440 1441 for (i = 0; i < report->maxfield; i++) 1442 if (report->field[i]->hidinput == hidinput) 1443 report->field[i]->hidinput = NULL; 1444 } 1445 } 1446 1447 kfree(hidinput); 1448 } 1449 1450 /* 1451 * Register the input device; print a message. 1452 * Configure the input layer interface 1453 * Read all reports and initialize the absolute field values. 1454 */ 1455 1456 int hidinput_connect(struct hid_device *hid, unsigned int force) 1457 { 1458 struct hid_driver *drv = hid->driver; 1459 struct hid_report *report; 1460 struct hid_input *hidinput = NULL; 1461 int i, j, k; 1462 1463 INIT_LIST_HEAD(&hid->inputs); 1464 INIT_WORK(&hid->led_work, hidinput_led_worker); 1465 1466 if (!force) { 1467 for (i = 0; i < hid->maxcollection; i++) { 1468 struct hid_collection *col = &hid->collection[i]; 1469 if (col->type == HID_COLLECTION_APPLICATION || 1470 col->type == HID_COLLECTION_PHYSICAL) 1471 if (IS_INPUT_APPLICATION(col->usage)) 1472 break; 1473 } 1474 1475 if (i == hid->maxcollection) 1476 return -1; 1477 } 1478 1479 report_features(hid); 1480 1481 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1482 if (k == HID_OUTPUT_REPORT && 1483 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1484 continue; 1485 1486 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1487 1488 if (!report->maxfield) 1489 continue; 1490 1491 if (!hidinput) { 1492 hidinput = hidinput_allocate(hid); 1493 if (!hidinput) 1494 goto out_unwind; 1495 } 1496 1497 for (i = 0; i < report->maxfield; i++) 1498 for (j = 0; j < report->field[i]->maxusage; j++) 1499 hidinput_configure_usage(hidinput, report->field[i], 1500 report->field[i]->usage + j); 1501 1502 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) && 1503 !hidinput_has_been_populated(hidinput)) 1504 continue; 1505 1506 if (hid->quirks & HID_QUIRK_MULTI_INPUT) { 1507 /* This will leave hidinput NULL, so that it 1508 * allocates another one if we have more inputs on 1509 * the same interface. Some devices (e.g. Happ's 1510 * UGCI) cram a lot of unrelated inputs into the 1511 * same interface. */ 1512 hidinput->report = report; 1513 if (drv->input_configured && 1514 drv->input_configured(hid, hidinput)) 1515 goto out_cleanup; 1516 if (input_register_device(hidinput->input)) 1517 goto out_cleanup; 1518 hidinput = NULL; 1519 } 1520 } 1521 } 1522 1523 if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) && 1524 !hidinput_has_been_populated(hidinput)) { 1525 /* no need to register an input device not populated */ 1526 hidinput_cleanup_hidinput(hid, hidinput); 1527 hidinput = NULL; 1528 } 1529 1530 if (list_empty(&hid->inputs)) { 1531 hid_err(hid, "No inputs registered, leaving\n"); 1532 goto out_unwind; 1533 } 1534 1535 if (hidinput) { 1536 if (drv->input_configured && 1537 drv->input_configured(hid, hidinput)) 1538 goto out_cleanup; 1539 if (input_register_device(hidinput->input)) 1540 goto out_cleanup; 1541 } 1542 1543 return 0; 1544 1545 out_cleanup: 1546 list_del(&hidinput->list); 1547 input_free_device(hidinput->input); 1548 kfree(hidinput); 1549 out_unwind: 1550 /* unwind the ones we already registered */ 1551 hidinput_disconnect(hid); 1552 1553 return -1; 1554 } 1555 EXPORT_SYMBOL_GPL(hidinput_connect); 1556 1557 void hidinput_disconnect(struct hid_device *hid) 1558 { 1559 struct hid_input *hidinput, *next; 1560 1561 hidinput_cleanup_battery(hid); 1562 1563 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1564 list_del(&hidinput->list); 1565 input_unregister_device(hidinput->input); 1566 kfree(hidinput); 1567 } 1568 1569 /* led_work is spawned by input_dev callbacks, but doesn't access the 1570 * parent input_dev at all. Once all input devices are removed, we 1571 * know that led_work will never get restarted, so we can cancel it 1572 * synchronously and are safe. */ 1573 cancel_work_sync(&hid->led_work); 1574 } 1575 EXPORT_SYMBOL_GPL(hidinput_disconnect); 1576 1577