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