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_get_battery_property(struct power_supply *psy, 344 enum power_supply_property prop, 345 union power_supply_propval *val) 346 { 347 struct hid_device *dev = power_supply_get_drvdata(psy); 348 int ret = 0; 349 __u8 *buf; 350 351 switch (prop) { 352 case POWER_SUPPLY_PROP_PRESENT: 353 case POWER_SUPPLY_PROP_ONLINE: 354 val->intval = 1; 355 break; 356 357 case POWER_SUPPLY_PROP_CAPACITY: 358 359 buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL); 360 if (!buf) { 361 ret = -ENOMEM; 362 break; 363 } 364 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2, 365 dev->battery_report_type, 366 HID_REQ_GET_REPORT); 367 368 if (ret != 2) { 369 ret = -ENODATA; 370 kfree(buf); 371 break; 372 } 373 ret = 0; 374 375 if (dev->battery_min < dev->battery_max && 376 buf[1] >= dev->battery_min && 377 buf[1] <= dev->battery_max) 378 val->intval = (100 * (buf[1] - dev->battery_min)) / 379 (dev->battery_max - dev->battery_min); 380 kfree(buf); 381 break; 382 383 case POWER_SUPPLY_PROP_MODEL_NAME: 384 val->strval = dev->name; 385 break; 386 387 case POWER_SUPPLY_PROP_STATUS: 388 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 389 break; 390 391 case POWER_SUPPLY_PROP_SCOPE: 392 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 393 break; 394 395 default: 396 ret = -EINVAL; 397 break; 398 } 399 400 return ret; 401 } 402 403 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field) 404 { 405 struct power_supply_desc *psy_desc = NULL; 406 struct power_supply_config psy_cfg = { .drv_data = dev, }; 407 unsigned quirks; 408 s32 min, max; 409 410 if (field->usage->hid != HID_DC_BATTERYSTRENGTH) 411 return false; /* no match */ 412 413 if (dev->battery != NULL) 414 goto out; /* already initialized? */ 415 416 quirks = find_battery_quirk(dev); 417 418 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 419 dev->bus, dev->vendor, dev->product, dev->version, quirks); 420 421 if (quirks & HID_BATTERY_QUIRK_IGNORE) 422 goto out; 423 424 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); 425 if (psy_desc == NULL) 426 goto out; 427 428 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq); 429 if (psy_desc->name == NULL) { 430 kfree(psy_desc); 431 goto out; 432 } 433 434 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; 435 psy_desc->properties = hidinput_battery_props; 436 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); 437 psy_desc->use_for_apm = 0; 438 psy_desc->get_property = hidinput_get_battery_property; 439 440 min = field->logical_minimum; 441 max = field->logical_maximum; 442 443 if (quirks & HID_BATTERY_QUIRK_PERCENT) { 444 min = 0; 445 max = 100; 446 } 447 448 if (quirks & HID_BATTERY_QUIRK_FEATURE) 449 report_type = HID_FEATURE_REPORT; 450 451 dev->battery_min = min; 452 dev->battery_max = max; 453 dev->battery_report_type = report_type; 454 dev->battery_report_id = field->report->id; 455 456 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); 457 if (IS_ERR(dev->battery)) { 458 hid_warn(dev, "can't register power supply: %ld\n", 459 PTR_ERR(dev->battery)); 460 kfree(psy_desc->name); 461 kfree(psy_desc); 462 dev->battery = NULL; 463 } else { 464 power_supply_powers(dev->battery, &dev->dev); 465 } 466 467 out: 468 return true; 469 } 470 471 static void hidinput_cleanup_battery(struct hid_device *dev) 472 { 473 const struct power_supply_desc *psy_desc; 474 475 if (!dev->battery) 476 return; 477 478 psy_desc = dev->battery->desc; 479 power_supply_unregister(dev->battery); 480 kfree(psy_desc->name); 481 kfree(psy_desc); 482 dev->battery = NULL; 483 } 484 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 485 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 486 struct hid_field *field) 487 { 488 return false; 489 } 490 491 static void hidinput_cleanup_battery(struct hid_device *dev) 492 { 493 } 494 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 495 496 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 497 struct hid_usage *usage) 498 { 499 struct input_dev *input = hidinput->input; 500 struct hid_device *device = input_get_drvdata(input); 501 int max = 0, code; 502 unsigned long *bit = NULL; 503 504 field->hidinput = hidinput; 505 506 if (field->flags & HID_MAIN_ITEM_CONSTANT) 507 goto ignore; 508 509 /* Ignore if report count is out of bounds. */ 510 if (field->report_count < 1) 511 goto ignore; 512 513 /* only LED usages are supported in output fields */ 514 if (field->report_type == HID_OUTPUT_REPORT && 515 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 516 goto ignore; 517 } 518 519 if (device->driver->input_mapping) { 520 int ret = device->driver->input_mapping(device, hidinput, field, 521 usage, &bit, &max); 522 if (ret > 0) 523 goto mapped; 524 if (ret < 0) 525 goto ignore; 526 } 527 528 switch (usage->hid & HID_USAGE_PAGE) { 529 case HID_UP_UNDEFINED: 530 goto ignore; 531 532 case HID_UP_KEYBOARD: 533 set_bit(EV_REP, input->evbit); 534 535 if ((usage->hid & HID_USAGE) < 256) { 536 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 537 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 538 } else 539 map_key(KEY_UNKNOWN); 540 541 break; 542 543 case HID_UP_BUTTON: 544 code = ((usage->hid - 1) & HID_USAGE); 545 546 switch (field->application) { 547 case HID_GD_MOUSE: 548 case HID_GD_POINTER: code += BTN_MOUSE; break; 549 case HID_GD_JOYSTICK: 550 if (code <= 0xf) 551 code += BTN_JOYSTICK; 552 else 553 code += BTN_TRIGGER_HAPPY - 0x10; 554 break; 555 case HID_GD_GAMEPAD: 556 if (code <= 0xf) 557 code += BTN_GAMEPAD; 558 else 559 code += BTN_TRIGGER_HAPPY - 0x10; 560 break; 561 default: 562 switch (field->physical) { 563 case HID_GD_MOUSE: 564 case HID_GD_POINTER: code += BTN_MOUSE; break; 565 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 566 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 567 default: code += BTN_MISC; 568 } 569 } 570 571 map_key(code); 572 break; 573 574 case HID_UP_SIMULATION: 575 switch (usage->hid & 0xffff) { 576 case 0xba: map_abs(ABS_RUDDER); break; 577 case 0xbb: map_abs(ABS_THROTTLE); break; 578 case 0xc4: map_abs(ABS_GAS); break; 579 case 0xc5: map_abs(ABS_BRAKE); break; 580 case 0xc8: map_abs(ABS_WHEEL); break; 581 default: goto ignore; 582 } 583 break; 584 585 case HID_UP_GENDESK: 586 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 587 switch (usage->hid & 0xf) { 588 case 0x1: map_key_clear(KEY_POWER); break; 589 case 0x2: map_key_clear(KEY_SLEEP); break; 590 case 0x3: map_key_clear(KEY_WAKEUP); break; 591 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 592 case 0x5: map_key_clear(KEY_MENU); break; 593 case 0x6: map_key_clear(KEY_PROG1); break; 594 case 0x7: map_key_clear(KEY_HELP); break; 595 case 0x8: map_key_clear(KEY_EXIT); break; 596 case 0x9: map_key_clear(KEY_SELECT); break; 597 case 0xa: map_key_clear(KEY_RIGHT); break; 598 case 0xb: map_key_clear(KEY_LEFT); break; 599 case 0xc: map_key_clear(KEY_UP); break; 600 case 0xd: map_key_clear(KEY_DOWN); break; 601 case 0xe: map_key_clear(KEY_POWER2); break; 602 case 0xf: map_key_clear(KEY_RESTART); break; 603 default: goto unknown; 604 } 605 break; 606 } 607 608 /* 609 * Some lazy vendors declare 255 usages for System Control, 610 * leading to the creation of ABS_X|Y axis and too many others. 611 * It wouldn't be a problem if joydev doesn't consider the 612 * device as a joystick then. 613 */ 614 if (field->application == HID_GD_SYSTEM_CONTROL) 615 goto ignore; 616 617 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 618 switch (usage->hid) { 619 case HID_GD_UP: usage->hat_dir = 1; break; 620 case HID_GD_DOWN: usage->hat_dir = 5; break; 621 case HID_GD_RIGHT: usage->hat_dir = 3; break; 622 case HID_GD_LEFT: usage->hat_dir = 7; break; 623 default: goto unknown; 624 } 625 if (field->dpad) { 626 map_abs(field->dpad); 627 goto ignore; 628 } 629 map_abs(ABS_HAT0X); 630 break; 631 } 632 633 switch (usage->hid) { 634 /* These usage IDs map directly to the usage codes. */ 635 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 636 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 637 if (field->flags & HID_MAIN_ITEM_RELATIVE) 638 map_rel(usage->hid & 0xf); 639 else 640 map_abs_clear(usage->hid & 0xf); 641 break; 642 643 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL: 644 if (field->flags & HID_MAIN_ITEM_RELATIVE) 645 map_rel(usage->hid & 0xf); 646 else 647 map_abs(usage->hid & 0xf); 648 break; 649 650 case HID_GD_HATSWITCH: 651 usage->hat_min = field->logical_minimum; 652 usage->hat_max = field->logical_maximum; 653 map_abs(ABS_HAT0X); 654 break; 655 656 case HID_GD_START: map_key_clear(BTN_START); break; 657 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 658 659 case HID_GD_RFKILL_BTN: 660 /* MS wireless radio ctl extension, also check CA */ 661 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { 662 map_key_clear(KEY_RFKILL); 663 /* We need to simulate the btn release */ 664 field->flags |= HID_MAIN_ITEM_RELATIVE; 665 break; 666 } 667 668 default: goto unknown; 669 } 670 671 break; 672 673 case HID_UP_LED: 674 switch (usage->hid & 0xffff) { /* HID-Value: */ 675 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 676 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 677 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 678 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 679 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 680 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 681 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 682 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 683 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 684 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 685 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 686 687 default: goto ignore; 688 } 689 break; 690 691 case HID_UP_DIGITIZER: 692 switch (usage->hid & 0xff) { 693 case 0x00: /* Undefined */ 694 goto ignore; 695 696 case 0x30: /* TipPressure */ 697 if (!test_bit(BTN_TOUCH, input->keybit)) { 698 device->quirks |= HID_QUIRK_NOTOUCH; 699 set_bit(EV_KEY, input->evbit); 700 set_bit(BTN_TOUCH, input->keybit); 701 } 702 map_abs_clear(ABS_PRESSURE); 703 break; 704 705 case 0x32: /* InRange */ 706 switch (field->physical & 0xff) { 707 case 0x21: map_key(BTN_TOOL_MOUSE); break; 708 case 0x22: map_key(BTN_TOOL_FINGER); break; 709 default: map_key(BTN_TOOL_PEN); break; 710 } 711 break; 712 713 case 0x3c: /* Invert */ 714 map_key_clear(BTN_TOOL_RUBBER); 715 break; 716 717 case 0x3d: /* X Tilt */ 718 map_abs_clear(ABS_TILT_X); 719 break; 720 721 case 0x3e: /* Y Tilt */ 722 map_abs_clear(ABS_TILT_Y); 723 break; 724 725 case 0x33: /* Touch */ 726 case 0x42: /* TipSwitch */ 727 case 0x43: /* TipSwitch2 */ 728 device->quirks &= ~HID_QUIRK_NOTOUCH; 729 map_key_clear(BTN_TOUCH); 730 break; 731 732 case 0x44: /* BarrelSwitch */ 733 map_key_clear(BTN_STYLUS); 734 break; 735 736 case 0x46: /* TabletPick */ 737 case 0x5a: /* SecondaryBarrelSwitch */ 738 map_key_clear(BTN_STYLUS2); 739 break; 740 741 case 0x5b: /* TransducerSerialNumber */ 742 usage->type = EV_MSC; 743 usage->code = MSC_SERIAL; 744 bit = input->mscbit; 745 max = MSC_MAX; 746 break; 747 748 default: goto unknown; 749 } 750 break; 751 752 case HID_UP_TELEPHONY: 753 switch (usage->hid & HID_USAGE) { 754 case 0x2f: map_key_clear(KEY_MICMUTE); break; 755 case 0xb0: map_key_clear(KEY_NUMERIC_0); break; 756 case 0xb1: map_key_clear(KEY_NUMERIC_1); break; 757 case 0xb2: map_key_clear(KEY_NUMERIC_2); break; 758 case 0xb3: map_key_clear(KEY_NUMERIC_3); break; 759 case 0xb4: map_key_clear(KEY_NUMERIC_4); break; 760 case 0xb5: map_key_clear(KEY_NUMERIC_5); break; 761 case 0xb6: map_key_clear(KEY_NUMERIC_6); break; 762 case 0xb7: map_key_clear(KEY_NUMERIC_7); break; 763 case 0xb8: map_key_clear(KEY_NUMERIC_8); break; 764 case 0xb9: map_key_clear(KEY_NUMERIC_9); break; 765 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; 766 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; 767 case 0xbc: map_key_clear(KEY_NUMERIC_A); break; 768 case 0xbd: map_key_clear(KEY_NUMERIC_B); break; 769 case 0xbe: map_key_clear(KEY_NUMERIC_C); break; 770 case 0xbf: map_key_clear(KEY_NUMERIC_D); break; 771 default: goto ignore; 772 } 773 break; 774 775 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 776 switch (usage->hid & HID_USAGE) { 777 case 0x000: goto ignore; 778 case 0x030: map_key_clear(KEY_POWER); break; 779 case 0x031: map_key_clear(KEY_RESTART); break; 780 case 0x032: map_key_clear(KEY_SLEEP); break; 781 case 0x034: map_key_clear(KEY_SLEEP); break; 782 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 783 case 0x036: map_key_clear(BTN_MISC); break; 784 785 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 786 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 787 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 788 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 789 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 790 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 791 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 792 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 793 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 794 795 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 796 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 797 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 798 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 799 case 0x069: map_key_clear(KEY_RED); break; 800 case 0x06a: map_key_clear(KEY_GREEN); break; 801 case 0x06b: map_key_clear(KEY_BLUE); break; 802 case 0x06c: map_key_clear(KEY_YELLOW); break; 803 case 0x06d: map_key_clear(KEY_ZOOM); break; 804 805 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; 806 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; 807 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; 808 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; 809 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; 810 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; 811 812 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 813 case 0x083: map_key_clear(KEY_LAST); break; 814 case 0x084: map_key_clear(KEY_ENTER); break; 815 case 0x088: map_key_clear(KEY_PC); break; 816 case 0x089: map_key_clear(KEY_TV); break; 817 case 0x08a: map_key_clear(KEY_WWW); break; 818 case 0x08b: map_key_clear(KEY_DVD); break; 819 case 0x08c: map_key_clear(KEY_PHONE); break; 820 case 0x08d: map_key_clear(KEY_PROGRAM); break; 821 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 822 case 0x08f: map_key_clear(KEY_GAMES); break; 823 case 0x090: map_key_clear(KEY_MEMO); break; 824 case 0x091: map_key_clear(KEY_CD); break; 825 case 0x092: map_key_clear(KEY_VCR); break; 826 case 0x093: map_key_clear(KEY_TUNER); break; 827 case 0x094: map_key_clear(KEY_EXIT); break; 828 case 0x095: map_key_clear(KEY_HELP); break; 829 case 0x096: map_key_clear(KEY_TAPE); break; 830 case 0x097: map_key_clear(KEY_TV2); break; 831 case 0x098: map_key_clear(KEY_SAT); break; 832 case 0x09a: map_key_clear(KEY_PVR); break; 833 834 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 835 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 836 case 0x0a0: map_key_clear(KEY_VCR2); break; 837 838 case 0x0b0: map_key_clear(KEY_PLAY); break; 839 case 0x0b1: map_key_clear(KEY_PAUSE); break; 840 case 0x0b2: map_key_clear(KEY_RECORD); break; 841 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 842 case 0x0b4: map_key_clear(KEY_REWIND); break; 843 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 844 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 845 case 0x0b7: map_key_clear(KEY_STOPCD); break; 846 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 847 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 848 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 849 case 0x0bf: map_key_clear(KEY_SLOW); break; 850 851 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 852 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; 853 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 854 case 0x0e2: map_key_clear(KEY_MUTE); break; 855 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 856 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 857 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 858 case 0x0f5: map_key_clear(KEY_SLOW); break; 859 860 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; 861 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 862 case 0x183: map_key_clear(KEY_CONFIG); break; 863 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 864 case 0x185: map_key_clear(KEY_EDITOR); break; 865 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 866 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 867 case 0x188: map_key_clear(KEY_PRESENTATION); break; 868 case 0x189: map_key_clear(KEY_DATABASE); break; 869 case 0x18a: map_key_clear(KEY_MAIL); break; 870 case 0x18b: map_key_clear(KEY_NEWS); break; 871 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 872 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 873 case 0x18e: map_key_clear(KEY_CALENDAR); break; 874 case 0x18f: map_key_clear(KEY_TASKMANAGER); break; 875 case 0x190: map_key_clear(KEY_JOURNAL); break; 876 case 0x191: map_key_clear(KEY_FINANCE); break; 877 case 0x192: map_key_clear(KEY_CALC); break; 878 case 0x193: map_key_clear(KEY_PLAYER); break; 879 case 0x194: map_key_clear(KEY_FILE); break; 880 case 0x196: map_key_clear(KEY_WWW); break; 881 case 0x199: map_key_clear(KEY_CHAT); break; 882 case 0x19c: map_key_clear(KEY_LOGOFF); break; 883 case 0x19e: map_key_clear(KEY_COFFEE); break; 884 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; 885 case 0x1a2: map_key_clear(KEY_APPSELECT); break; 886 case 0x1a3: map_key_clear(KEY_NEXT); break; 887 case 0x1a4: map_key_clear(KEY_PREVIOUS); break; 888 case 0x1a6: map_key_clear(KEY_HELP); break; 889 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 890 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 891 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 892 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; 893 case 0x1b4: map_key_clear(KEY_FILE); break; 894 case 0x1b6: map_key_clear(KEY_IMAGES); break; 895 case 0x1b7: map_key_clear(KEY_AUDIO); break; 896 case 0x1b8: map_key_clear(KEY_VIDEO); break; 897 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 898 case 0x1bd: map_key_clear(KEY_INFO); break; 899 case 0x201: map_key_clear(KEY_NEW); break; 900 case 0x202: map_key_clear(KEY_OPEN); break; 901 case 0x203: map_key_clear(KEY_CLOSE); break; 902 case 0x204: map_key_clear(KEY_EXIT); break; 903 case 0x207: map_key_clear(KEY_SAVE); break; 904 case 0x208: map_key_clear(KEY_PRINT); break; 905 case 0x209: map_key_clear(KEY_PROPS); break; 906 case 0x21a: map_key_clear(KEY_UNDO); break; 907 case 0x21b: map_key_clear(KEY_COPY); break; 908 case 0x21c: map_key_clear(KEY_CUT); break; 909 case 0x21d: map_key_clear(KEY_PASTE); break; 910 case 0x21f: map_key_clear(KEY_FIND); break; 911 case 0x221: map_key_clear(KEY_SEARCH); break; 912 case 0x222: map_key_clear(KEY_GOTO); break; 913 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 914 case 0x224: map_key_clear(KEY_BACK); break; 915 case 0x225: map_key_clear(KEY_FORWARD); break; 916 case 0x226: map_key_clear(KEY_STOP); break; 917 case 0x227: map_key_clear(KEY_REFRESH); break; 918 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 919 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 920 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 921 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 922 case 0x233: map_key_clear(KEY_SCROLLUP); break; 923 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 924 case 0x238: map_rel(REL_HWHEEL); break; 925 case 0x23d: map_key_clear(KEY_EDIT); break; 926 case 0x25f: map_key_clear(KEY_CANCEL); break; 927 case 0x269: map_key_clear(KEY_INSERT); break; 928 case 0x26a: map_key_clear(KEY_DELETE); break; 929 case 0x279: map_key_clear(KEY_REDO); break; 930 931 case 0x289: map_key_clear(KEY_REPLY); break; 932 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 933 case 0x28c: map_key_clear(KEY_SEND); break; 934 935 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; 936 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; 937 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; 938 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; 939 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; 940 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; 941 942 default: map_key_clear(KEY_UNKNOWN); 943 } 944 break; 945 946 case HID_UP_GENDEVCTRLS: 947 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field)) 948 goto ignore; 949 else 950 goto unknown; 951 break; 952 953 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 954 set_bit(EV_REP, input->evbit); 955 switch (usage->hid & HID_USAGE) { 956 case 0x021: map_key_clear(KEY_PRINT); break; 957 case 0x070: map_key_clear(KEY_HP); break; 958 case 0x071: map_key_clear(KEY_CAMERA); break; 959 case 0x072: map_key_clear(KEY_SOUND); break; 960 case 0x073: map_key_clear(KEY_QUESTION); break; 961 case 0x080: map_key_clear(KEY_EMAIL); break; 962 case 0x081: map_key_clear(KEY_CHAT); break; 963 case 0x082: map_key_clear(KEY_SEARCH); break; 964 case 0x083: map_key_clear(KEY_CONNECT); break; 965 case 0x084: map_key_clear(KEY_FINANCE); break; 966 case 0x085: map_key_clear(KEY_SPORT); break; 967 case 0x086: map_key_clear(KEY_SHOP); break; 968 default: goto ignore; 969 } 970 break; 971 972 case HID_UP_HPVENDOR2: 973 set_bit(EV_REP, input->evbit); 974 switch (usage->hid & HID_USAGE) { 975 case 0x001: map_key_clear(KEY_MICMUTE); break; 976 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 977 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 978 default: goto ignore; 979 } 980 break; 981 982 case HID_UP_MSVENDOR: 983 goto ignore; 984 985 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 986 set_bit(EV_REP, input->evbit); 987 goto ignore; 988 989 case HID_UP_LOGIVENDOR: 990 /* intentional fallback */ 991 case HID_UP_LOGIVENDOR2: 992 /* intentional fallback */ 993 case HID_UP_LOGIVENDOR3: 994 goto ignore; 995 996 case HID_UP_PID: 997 switch (usage->hid & HID_USAGE) { 998 case 0xa4: map_key_clear(BTN_DEAD); break; 999 default: goto ignore; 1000 } 1001 break; 1002 1003 default: 1004 unknown: 1005 if (field->report_size == 1) { 1006 if (field->report->type == HID_OUTPUT_REPORT) { 1007 map_led(LED_MISC); 1008 break; 1009 } 1010 map_key(BTN_MISC); 1011 break; 1012 } 1013 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 1014 map_rel(REL_MISC); 1015 break; 1016 } 1017 map_abs(ABS_MISC); 1018 break; 1019 } 1020 1021 mapped: 1022 if (device->driver->input_mapped && device->driver->input_mapped(device, 1023 hidinput, field, usage, &bit, &max) < 0) 1024 goto ignore; 1025 1026 set_bit(usage->type, input->evbit); 1027 1028 while (usage->code <= max && test_and_set_bit(usage->code, bit)) 1029 usage->code = find_next_zero_bit(bit, max + 1, usage->code); 1030 1031 if (usage->code > max) 1032 goto ignore; 1033 1034 1035 if (usage->type == EV_ABS) { 1036 1037 int a = field->logical_minimum; 1038 int b = field->logical_maximum; 1039 1040 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 1041 a = field->logical_minimum = 0; 1042 b = field->logical_maximum = 255; 1043 } 1044 1045 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 1046 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 1047 else input_set_abs_params(input, usage->code, a, b, 0, 0); 1048 1049 input_abs_set_res(input, usage->code, 1050 hidinput_calc_abs_res(field, usage->code)); 1051 1052 /* use a larger default input buffer for MT devices */ 1053 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 1054 input_set_events_per_packet(input, 60); 1055 } 1056 1057 if (usage->type == EV_ABS && 1058 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 1059 int i; 1060 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 1061 input_set_abs_params(input, i, -1, 1, 0, 0); 1062 set_bit(i, input->absbit); 1063 } 1064 if (usage->hat_dir && !field->dpad) 1065 field->dpad = usage->code; 1066 } 1067 1068 /* for those devices which produce Consumer volume usage as relative, 1069 * we emulate pressing volumeup/volumedown appropriate number of times 1070 * in hidinput_hid_event() 1071 */ 1072 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1073 (usage->code == ABS_VOLUME)) { 1074 set_bit(KEY_VOLUMEUP, input->keybit); 1075 set_bit(KEY_VOLUMEDOWN, input->keybit); 1076 } 1077 1078 if (usage->type == EV_KEY) { 1079 set_bit(EV_MSC, input->evbit); 1080 set_bit(MSC_SCAN, input->mscbit); 1081 } 1082 1083 ignore: 1084 return; 1085 1086 } 1087 1088 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 1089 { 1090 struct input_dev *input; 1091 unsigned *quirks = &hid->quirks; 1092 1093 if (!field->hidinput) 1094 return; 1095 1096 input = field->hidinput->input; 1097 1098 if (!usage->type) 1099 return; 1100 1101 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 1102 int hat_dir = usage->hat_dir; 1103 if (!hat_dir) 1104 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 1105 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 1106 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 1107 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 1108 return; 1109 } 1110 1111 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 1112 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1113 return; 1114 } 1115 1116 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 1117 if (value) { 1118 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1119 return; 1120 } 1121 input_event(input, usage->type, usage->code, 0); 1122 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1123 return; 1124 } 1125 1126 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 1127 int a = field->logical_minimum; 1128 int b = field->logical_maximum; 1129 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1130 } 1131 1132 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1133 dbg_hid("Maximum Effects - %d\n",value); 1134 return; 1135 } 1136 1137 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1138 dbg_hid("PID Pool Report\n"); 1139 return; 1140 } 1141 1142 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1143 return; 1144 1145 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1146 (usage->code == ABS_VOLUME)) { 1147 int count = abs(value); 1148 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1149 int i; 1150 1151 for (i = 0; i < count; i++) { 1152 input_event(input, EV_KEY, direction, 1); 1153 input_sync(input); 1154 input_event(input, EV_KEY, direction, 0); 1155 input_sync(input); 1156 } 1157 return; 1158 } 1159 1160 /* 1161 * Ignore out-of-range values as per HID specification, 1162 * section 5.10 and 6.2.25, when NULL state bit is present. 1163 * When it's not, clamp the value to match Microsoft's input 1164 * driver as mentioned in "Required HID usages for digitizers": 1165 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp 1166 * 1167 * The logical_minimum < logical_maximum check is done so that we 1168 * don't unintentionally discard values sent by devices which 1169 * don't specify logical min and max. 1170 */ 1171 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1172 (field->logical_minimum < field->logical_maximum)) { 1173 if (field->flags & HID_MAIN_ITEM_NULL_STATE && 1174 (value < field->logical_minimum || 1175 value > field->logical_maximum)) { 1176 dbg_hid("Ignoring out-of-range value %x\n", value); 1177 return; 1178 } 1179 value = clamp(value, 1180 field->logical_minimum, 1181 field->logical_maximum); 1182 } 1183 1184 /* 1185 * Ignore reports for absolute data if the data didn't change. This is 1186 * not only an optimization but also fixes 'dead' key reports. Some 1187 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID 1188 * 0x31 and 0x32) report multiple keys, even though a localized keyboard 1189 * can only have one of them physically available. The 'dead' keys 1190 * report constant 0. As all map to the same keycode, they'd confuse 1191 * the input layer. If we filter the 'dead' keys on the HID level, we 1192 * skip the keycode translation and only forward real events. 1193 */ 1194 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | 1195 HID_MAIN_ITEM_BUFFERED_BYTE)) && 1196 (field->flags & HID_MAIN_ITEM_VARIABLE) && 1197 usage->usage_index < field->maxusage && 1198 value == field->value[usage->usage_index]) 1199 return; 1200 1201 /* report the usage code as scancode if the key status has changed */ 1202 if (usage->type == EV_KEY && 1203 (!test_bit(usage->code, input->key)) == value) 1204 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1205 1206 input_event(input, usage->type, usage->code, value); 1207 1208 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && 1209 usage->type == EV_KEY && value) { 1210 input_sync(input); 1211 input_event(input, usage->type, usage->code, 0); 1212 } 1213 } 1214 1215 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1216 { 1217 struct hid_input *hidinput; 1218 1219 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1220 return; 1221 1222 list_for_each_entry(hidinput, &hid->inputs, list) 1223 input_sync(hidinput->input); 1224 } 1225 EXPORT_SYMBOL_GPL(hidinput_report_event); 1226 1227 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1228 { 1229 struct hid_report *report; 1230 int i, j; 1231 1232 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1233 for (i = 0; i < report->maxfield; i++) { 1234 *field = report->field[i]; 1235 for (j = 0; j < (*field)->maxusage; j++) 1236 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1237 return j; 1238 } 1239 } 1240 return -1; 1241 } 1242 EXPORT_SYMBOL_GPL(hidinput_find_field); 1243 1244 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1245 { 1246 struct hid_report *report; 1247 struct hid_field *field; 1248 int i, j; 1249 1250 list_for_each_entry(report, 1251 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1252 list) { 1253 for (i = 0; i < report->maxfield; i++) { 1254 field = report->field[i]; 1255 for (j = 0; j < field->maxusage; j++) 1256 if (field->usage[j].type == EV_LED) 1257 return field; 1258 } 1259 } 1260 return NULL; 1261 } 1262 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1263 1264 unsigned int hidinput_count_leds(struct hid_device *hid) 1265 { 1266 struct hid_report *report; 1267 struct hid_field *field; 1268 int i, j; 1269 unsigned int count = 0; 1270 1271 list_for_each_entry(report, 1272 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1273 list) { 1274 for (i = 0; i < report->maxfield; i++) { 1275 field = report->field[i]; 1276 for (j = 0; j < field->maxusage; j++) 1277 if (field->usage[j].type == EV_LED && 1278 field->value[j]) 1279 count += 1; 1280 } 1281 } 1282 return count; 1283 } 1284 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1285 1286 static void hidinput_led_worker(struct work_struct *work) 1287 { 1288 struct hid_device *hid = container_of(work, struct hid_device, 1289 led_work); 1290 struct hid_field *field; 1291 struct hid_report *report; 1292 int len, ret; 1293 __u8 *buf; 1294 1295 field = hidinput_get_led_field(hid); 1296 if (!field) 1297 return; 1298 1299 /* 1300 * field->report is accessed unlocked regarding HID core. So there might 1301 * be another incoming SET-LED request from user-space, which changes 1302 * the LED state while we assemble our outgoing buffer. However, this 1303 * doesn't matter as hid_output_report() correctly converts it into a 1304 * boolean value no matter what information is currently set on the LED 1305 * field (even garbage). So the remote device will always get a valid 1306 * request. 1307 * And in case we send a wrong value, a next led worker is spawned 1308 * for every SET-LED request so the following worker will send the 1309 * correct value, guaranteed! 1310 */ 1311 1312 report = field->report; 1313 1314 /* use custom SET_REPORT request if possible (asynchronous) */ 1315 if (hid->ll_driver->request) 1316 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1317 1318 /* fall back to generic raw-output-report */ 1319 len = hid_report_len(report); 1320 buf = hid_alloc_report_buf(report, GFP_KERNEL); 1321 if (!buf) 1322 return; 1323 1324 hid_output_report(report, buf); 1325 /* synchronous output report */ 1326 ret = hid_hw_output_report(hid, buf, len); 1327 if (ret == -ENOSYS) 1328 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, 1329 HID_REQ_SET_REPORT); 1330 kfree(buf); 1331 } 1332 1333 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1334 unsigned int code, int value) 1335 { 1336 struct hid_device *hid = input_get_drvdata(dev); 1337 struct hid_field *field; 1338 int offset; 1339 1340 if (type == EV_FF) 1341 return input_ff_event(dev, type, code, value); 1342 1343 if (type != EV_LED) 1344 return -1; 1345 1346 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1347 hid_warn(dev, "event field not found\n"); 1348 return -1; 1349 } 1350 1351 hid_set_field(field, offset, value); 1352 1353 schedule_work(&hid->led_work); 1354 return 0; 1355 } 1356 1357 static int hidinput_open(struct input_dev *dev) 1358 { 1359 struct hid_device *hid = input_get_drvdata(dev); 1360 1361 return hid_hw_open(hid); 1362 } 1363 1364 static void hidinput_close(struct input_dev *dev) 1365 { 1366 struct hid_device *hid = input_get_drvdata(dev); 1367 1368 hid_hw_close(hid); 1369 } 1370 1371 static void report_features(struct hid_device *hid) 1372 { 1373 struct hid_driver *drv = hid->driver; 1374 struct hid_report_enum *rep_enum; 1375 struct hid_report *rep; 1376 int i, j; 1377 1378 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1379 list_for_each_entry(rep, &rep_enum->report_list, list) 1380 for (i = 0; i < rep->maxfield; i++) { 1381 /* Ignore if report count is out of bounds. */ 1382 if (rep->field[i]->report_count < 1) 1383 continue; 1384 1385 for (j = 0; j < rep->field[i]->maxusage; j++) { 1386 /* Verify if Battery Strength feature is available */ 1387 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]); 1388 1389 if (drv->feature_mapping) 1390 drv->feature_mapping(hid, rep->field[i], 1391 rep->field[i]->usage + j); 1392 } 1393 } 1394 } 1395 1396 static struct hid_input *hidinput_allocate(struct hid_device *hid) 1397 { 1398 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1399 struct input_dev *input_dev = input_allocate_device(); 1400 if (!hidinput || !input_dev) { 1401 kfree(hidinput); 1402 input_free_device(input_dev); 1403 hid_err(hid, "Out of memory during hid input probe\n"); 1404 return NULL; 1405 } 1406 1407 input_set_drvdata(input_dev, hid); 1408 input_dev->event = hidinput_input_event; 1409 input_dev->open = hidinput_open; 1410 input_dev->close = hidinput_close; 1411 input_dev->setkeycode = hidinput_setkeycode; 1412 input_dev->getkeycode = hidinput_getkeycode; 1413 1414 input_dev->name = hid->name; 1415 input_dev->phys = hid->phys; 1416 input_dev->uniq = hid->uniq; 1417 input_dev->id.bustype = hid->bus; 1418 input_dev->id.vendor = hid->vendor; 1419 input_dev->id.product = hid->product; 1420 input_dev->id.version = hid->version; 1421 input_dev->dev.parent = &hid->dev; 1422 hidinput->input = input_dev; 1423 list_add_tail(&hidinput->list, &hid->inputs); 1424 1425 return hidinput; 1426 } 1427 1428 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1429 { 1430 int i; 1431 unsigned long r = 0; 1432 1433 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1434 r |= hidinput->input->evbit[i]; 1435 1436 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1437 r |= hidinput->input->keybit[i]; 1438 1439 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1440 r |= hidinput->input->relbit[i]; 1441 1442 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1443 r |= hidinput->input->absbit[i]; 1444 1445 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1446 r |= hidinput->input->mscbit[i]; 1447 1448 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1449 r |= hidinput->input->ledbit[i]; 1450 1451 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1452 r |= hidinput->input->sndbit[i]; 1453 1454 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1455 r |= hidinput->input->ffbit[i]; 1456 1457 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1458 r |= hidinput->input->swbit[i]; 1459 1460 return !!r; 1461 } 1462 1463 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1464 struct hid_input *hidinput) 1465 { 1466 struct hid_report *report; 1467 int i, k; 1468 1469 list_del(&hidinput->list); 1470 input_free_device(hidinput->input); 1471 1472 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1473 if (k == HID_OUTPUT_REPORT && 1474 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1475 continue; 1476 1477 list_for_each_entry(report, &hid->report_enum[k].report_list, 1478 list) { 1479 1480 for (i = 0; i < report->maxfield; i++) 1481 if (report->field[i]->hidinput == hidinput) 1482 report->field[i]->hidinput = NULL; 1483 } 1484 } 1485 1486 kfree(hidinput); 1487 } 1488 1489 static struct hid_input *hidinput_match(struct hid_report *report) 1490 { 1491 struct hid_device *hid = report->device; 1492 struct hid_input *hidinput; 1493 1494 list_for_each_entry(hidinput, &hid->inputs, list) { 1495 if (hidinput->report && 1496 hidinput->report->id == report->id) 1497 return hidinput; 1498 } 1499 1500 return NULL; 1501 } 1502 1503 static inline void hidinput_configure_usages(struct hid_input *hidinput, 1504 struct hid_report *report) 1505 { 1506 int i, j; 1507 1508 for (i = 0; i < report->maxfield; i++) 1509 for (j = 0; j < report->field[i]->maxusage; j++) 1510 hidinput_configure_usage(hidinput, report->field[i], 1511 report->field[i]->usage + j); 1512 } 1513 1514 /* 1515 * Register the input device; print a message. 1516 * Configure the input layer interface 1517 * Read all reports and initialize the absolute field values. 1518 */ 1519 1520 int hidinput_connect(struct hid_device *hid, unsigned int force) 1521 { 1522 struct hid_driver *drv = hid->driver; 1523 struct hid_report *report; 1524 struct hid_input *next, *hidinput = NULL; 1525 int i, k; 1526 1527 INIT_LIST_HEAD(&hid->inputs); 1528 INIT_WORK(&hid->led_work, hidinput_led_worker); 1529 1530 if (!force) { 1531 for (i = 0; i < hid->maxcollection; i++) { 1532 struct hid_collection *col = &hid->collection[i]; 1533 if (col->type == HID_COLLECTION_APPLICATION || 1534 col->type == HID_COLLECTION_PHYSICAL) 1535 if (IS_INPUT_APPLICATION(col->usage)) 1536 break; 1537 } 1538 1539 if (i == hid->maxcollection) 1540 return -1; 1541 } 1542 1543 report_features(hid); 1544 1545 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1546 if (k == HID_OUTPUT_REPORT && 1547 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1548 continue; 1549 1550 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1551 1552 if (!report->maxfield) 1553 continue; 1554 1555 /* 1556 * Find the previous hidinput report attached 1557 * to this report id. 1558 */ 1559 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1560 hidinput = hidinput_match(report); 1561 1562 if (!hidinput) { 1563 hidinput = hidinput_allocate(hid); 1564 if (!hidinput) 1565 goto out_unwind; 1566 } 1567 1568 hidinput_configure_usages(hidinput, report); 1569 1570 if (hid->quirks & HID_QUIRK_MULTI_INPUT) 1571 hidinput->report = report; 1572 } 1573 } 1574 1575 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1576 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) && 1577 !hidinput_has_been_populated(hidinput)) { 1578 /* no need to register an input device not populated */ 1579 hidinput_cleanup_hidinput(hid, hidinput); 1580 continue; 1581 } 1582 1583 if (drv->input_configured && 1584 drv->input_configured(hid, hidinput)) 1585 goto out_unwind; 1586 if (input_register_device(hidinput->input)) 1587 goto out_unwind; 1588 hidinput->registered = true; 1589 } 1590 1591 if (list_empty(&hid->inputs)) { 1592 hid_err(hid, "No inputs registered, leaving\n"); 1593 goto out_unwind; 1594 } 1595 1596 return 0; 1597 1598 out_unwind: 1599 /* unwind the ones we already registered */ 1600 hidinput_disconnect(hid); 1601 1602 return -1; 1603 } 1604 EXPORT_SYMBOL_GPL(hidinput_connect); 1605 1606 void hidinput_disconnect(struct hid_device *hid) 1607 { 1608 struct hid_input *hidinput, *next; 1609 1610 hidinput_cleanup_battery(hid); 1611 1612 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1613 list_del(&hidinput->list); 1614 if (hidinput->registered) 1615 input_unregister_device(hidinput->input); 1616 else 1617 input_free_device(hidinput->input); 1618 kfree(hidinput); 1619 } 1620 1621 /* led_work is spawned by input_dev callbacks, but doesn't access the 1622 * parent input_dev at all. Once all input devices are removed, we 1623 * know that led_work will never get restarted, so we can cancel it 1624 * synchronously and are safe. */ 1625 cancel_work_sync(&hid->led_work); 1626 } 1627 EXPORT_SYMBOL_GPL(hidinput_disconnect); 1628 1629