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