1 /* 2 * Copyright (c) 2000-2001 Vojtech Pavlik 3 * Copyright (c) 2006-2010 Jiri Kosina 4 * 5 * HID to Linux Input mapping 6 */ 7 8 /* 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 * 23 * Should you need to contact me, the author, you can do so either by 24 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 25 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 26 */ 27 28 #include <linux/module.h> 29 #include <linux/slab.h> 30 #include <linux/kernel.h> 31 32 #include <linux/hid.h> 33 #include <linux/hid-debug.h> 34 35 #include "hid-ids.h" 36 37 #define unk KEY_UNKNOWN 38 39 static const unsigned char hid_keyboard[256] = { 40 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, 41 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, 42 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, 43 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, 44 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, 45 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, 46 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, 47 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, 48 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk, 49 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk, 50 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 51 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk, 52 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 53 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk, 54 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, 55 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk 56 }; 57 58 static const struct { 59 __s32 x; 60 __s32 y; 61 } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; 62 63 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c)) 64 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c)) 65 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c)) 66 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c)) 67 68 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 69 &max, EV_ABS, (c)) 70 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 71 &max, EV_KEY, (c)) 72 73 static bool match_scancode(struct hid_usage *usage, 74 unsigned int cur_idx, unsigned int scancode) 75 { 76 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode; 77 } 78 79 static bool match_keycode(struct hid_usage *usage, 80 unsigned int cur_idx, unsigned int keycode) 81 { 82 /* 83 * We should exclude unmapped usages when doing lookup by keycode. 84 */ 85 return (usage->type == EV_KEY && usage->code == keycode); 86 } 87 88 static bool match_index(struct hid_usage *usage, 89 unsigned int cur_idx, unsigned int idx) 90 { 91 return cur_idx == idx; 92 } 93 94 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage, 95 unsigned int cur_idx, unsigned int val); 96 97 static struct hid_usage *hidinput_find_key(struct hid_device *hid, 98 hid_usage_cmp_t match, 99 unsigned int value, 100 unsigned int *usage_idx) 101 { 102 unsigned int i, j, k, cur_idx = 0; 103 struct hid_report *report; 104 struct hid_usage *usage; 105 106 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 107 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 108 for (i = 0; i < report->maxfield; i++) { 109 for (j = 0; j < report->field[i]->maxusage; j++) { 110 usage = report->field[i]->usage + j; 111 if (usage->type == EV_KEY || usage->type == 0) { 112 if (match(usage, cur_idx, value)) { 113 if (usage_idx) 114 *usage_idx = cur_idx; 115 return usage; 116 } 117 cur_idx++; 118 } 119 } 120 } 121 } 122 } 123 return NULL; 124 } 125 126 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid, 127 const struct input_keymap_entry *ke, 128 unsigned int *index) 129 { 130 struct hid_usage *usage; 131 unsigned int scancode; 132 133 if (ke->flags & INPUT_KEYMAP_BY_INDEX) 134 usage = hidinput_find_key(hid, match_index, ke->index, index); 135 else if (input_scancode_to_scalar(ke, &scancode) == 0) 136 usage = hidinput_find_key(hid, match_scancode, scancode, index); 137 else 138 usage = NULL; 139 140 return usage; 141 } 142 143 static int hidinput_getkeycode(struct input_dev *dev, 144 struct input_keymap_entry *ke) 145 { 146 struct hid_device *hid = input_get_drvdata(dev); 147 struct hid_usage *usage; 148 unsigned int scancode, index; 149 150 usage = hidinput_locate_usage(hid, ke, &index); 151 if (usage) { 152 ke->keycode = usage->type == EV_KEY ? 153 usage->code : KEY_RESERVED; 154 ke->index = index; 155 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE); 156 ke->len = sizeof(scancode); 157 memcpy(ke->scancode, &scancode, sizeof(scancode)); 158 return 0; 159 } 160 161 return -EINVAL; 162 } 163 164 static int hidinput_setkeycode(struct input_dev *dev, 165 const struct input_keymap_entry *ke, 166 unsigned int *old_keycode) 167 { 168 struct hid_device *hid = input_get_drvdata(dev); 169 struct hid_usage *usage; 170 171 usage = hidinput_locate_usage(hid, ke, NULL); 172 if (usage) { 173 *old_keycode = usage->type == EV_KEY ? 174 usage->code : KEY_RESERVED; 175 usage->code = ke->keycode; 176 177 clear_bit(*old_keycode, dev->keybit); 178 set_bit(usage->code, dev->keybit); 179 dbg_hid("Assigned keycode %d to HID usage code %x\n", 180 usage->code, usage->hid); 181 182 /* 183 * Set the keybit for the old keycode if the old keycode is used 184 * by another key 185 */ 186 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL)) 187 set_bit(*old_keycode, dev->keybit); 188 189 return 0; 190 } 191 192 return -EINVAL; 193 } 194 195 /** 196 * hidinput_calc_abs_res - calculate an absolute axis resolution 197 * @field: the HID report field to calculate resolution for 198 * @code: axis code 199 * 200 * The formula is: 201 * (logical_maximum - logical_minimum) 202 * resolution = ---------------------------------------------------------- 203 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent 204 * 205 * as seen in the HID specification v1.11 6.2.2.7 Global Items. 206 * 207 * Only exponent 1 length units are processed. Centimeters and inches are 208 * converted to millimeters. Degrees are converted to radians. 209 */ 210 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) 211 { 212 __s32 unit_exponent = field->unit_exponent; 213 __s32 logical_extents = field->logical_maximum - 214 field->logical_minimum; 215 __s32 physical_extents = field->physical_maximum - 216 field->physical_minimum; 217 __s32 prev; 218 219 /* Check if the extents are sane */ 220 if (logical_extents <= 0 || physical_extents <= 0) 221 return 0; 222 223 /* 224 * Verify and convert units. 225 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding 226 */ 227 switch (code) { 228 case ABS_X: 229 case ABS_Y: 230 case ABS_Z: 231 case ABS_MT_POSITION_X: 232 case ABS_MT_POSITION_Y: 233 case ABS_MT_TOOL_X: 234 case ABS_MT_TOOL_Y: 235 case ABS_MT_TOUCH_MAJOR: 236 case ABS_MT_TOUCH_MINOR: 237 if (field->unit & 0xffffff00) /* Not a length */ 238 return 0; 239 unit_exponent += hid_snto32(field->unit >> 4, 4) - 1; 240 switch (field->unit & 0xf) { 241 case 0x1: /* If centimeters */ 242 /* Convert to millimeters */ 243 unit_exponent += 1; 244 break; 245 case 0x3: /* If inches */ 246 /* Convert to millimeters */ 247 prev = physical_extents; 248 physical_extents *= 254; 249 if (physical_extents < prev) 250 return 0; 251 unit_exponent -= 1; 252 break; 253 default: 254 return 0; 255 } 256 break; 257 258 case ABS_RX: 259 case ABS_RY: 260 case ABS_RZ: 261 case ABS_TILT_X: 262 case ABS_TILT_Y: 263 if (field->unit == 0x14) { /* If degrees */ 264 /* Convert to radians */ 265 prev = logical_extents; 266 logical_extents *= 573; 267 if (logical_extents < prev) 268 return 0; 269 unit_exponent += 1; 270 } else if (field->unit != 0x12) { /* If not radians */ 271 return 0; 272 } 273 break; 274 275 default: 276 return 0; 277 } 278 279 /* Apply negative unit exponent */ 280 for (; unit_exponent < 0; unit_exponent++) { 281 prev = logical_extents; 282 logical_extents *= 10; 283 if (logical_extents < prev) 284 return 0; 285 } 286 /* Apply positive unit exponent */ 287 for (; unit_exponent > 0; unit_exponent--) { 288 prev = physical_extents; 289 physical_extents *= 10; 290 if (physical_extents < prev) 291 return 0; 292 } 293 294 /* Calculate resolution */ 295 return DIV_ROUND_CLOSEST(logical_extents, physical_extents); 296 } 297 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res); 298 299 #ifdef CONFIG_HID_BATTERY_STRENGTH 300 static enum power_supply_property hidinput_battery_props[] = { 301 POWER_SUPPLY_PROP_PRESENT, 302 POWER_SUPPLY_PROP_ONLINE, 303 POWER_SUPPLY_PROP_CAPACITY, 304 POWER_SUPPLY_PROP_MODEL_NAME, 305 POWER_SUPPLY_PROP_STATUS, 306 POWER_SUPPLY_PROP_SCOPE, 307 }; 308 309 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */ 310 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */ 311 312 static const struct hid_device_id hid_battery_quirks[] = { 313 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 314 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO), 315 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 316 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 317 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI), 318 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 319 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 320 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI), 321 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, 322 {} 323 }; 324 325 static unsigned find_battery_quirk(struct hid_device *hdev) 326 { 327 unsigned quirks = 0; 328 const struct hid_device_id *match; 329 330 match = hid_match_id(hdev, hid_battery_quirks); 331 if (match != NULL) 332 quirks = match->driver_data; 333 334 return quirks; 335 } 336 337 static int hidinput_get_battery_property(struct power_supply *psy, 338 enum power_supply_property prop, 339 union power_supply_propval *val) 340 { 341 struct hid_device *dev = container_of(psy, struct hid_device, battery); 342 int ret = 0; 343 __u8 *buf; 344 345 switch (prop) { 346 case POWER_SUPPLY_PROP_PRESENT: 347 case POWER_SUPPLY_PROP_ONLINE: 348 val->intval = 1; 349 break; 350 351 case POWER_SUPPLY_PROP_CAPACITY: 352 353 buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL); 354 if (!buf) { 355 ret = -ENOMEM; 356 break; 357 } 358 ret = dev->hid_get_raw_report(dev, dev->battery_report_id, 359 buf, 2, 360 dev->battery_report_type); 361 362 if (ret != 2) { 363 ret = -ENODATA; 364 kfree(buf); 365 break; 366 } 367 ret = 0; 368 369 if (dev->battery_min < dev->battery_max && 370 buf[1] >= dev->battery_min && 371 buf[1] <= dev->battery_max) 372 val->intval = (100 * (buf[1] - dev->battery_min)) / 373 (dev->battery_max - dev->battery_min); 374 kfree(buf); 375 break; 376 377 case POWER_SUPPLY_PROP_MODEL_NAME: 378 val->strval = dev->name; 379 break; 380 381 case POWER_SUPPLY_PROP_STATUS: 382 val->intval = POWER_SUPPLY_STATUS_DISCHARGING; 383 break; 384 385 case POWER_SUPPLY_PROP_SCOPE: 386 val->intval = POWER_SUPPLY_SCOPE_DEVICE; 387 break; 388 389 default: 390 ret = -EINVAL; 391 break; 392 } 393 394 return ret; 395 } 396 397 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field) 398 { 399 struct power_supply *battery = &dev->battery; 400 int ret; 401 unsigned quirks; 402 s32 min, max; 403 404 if (field->usage->hid != HID_DC_BATTERYSTRENGTH) 405 return false; /* no match */ 406 407 if (battery->name != NULL) 408 goto out; /* already initialized? */ 409 410 battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq); 411 if (battery->name == NULL) 412 goto out; 413 414 battery->type = POWER_SUPPLY_TYPE_BATTERY; 415 battery->properties = hidinput_battery_props; 416 battery->num_properties = ARRAY_SIZE(hidinput_battery_props); 417 battery->use_for_apm = 0; 418 battery->get_property = hidinput_get_battery_property; 419 420 quirks = find_battery_quirk(dev); 421 422 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", 423 dev->bus, dev->vendor, dev->product, dev->version, quirks); 424 425 min = field->logical_minimum; 426 max = field->logical_maximum; 427 428 if (quirks & HID_BATTERY_QUIRK_PERCENT) { 429 min = 0; 430 max = 100; 431 } 432 433 if (quirks & HID_BATTERY_QUIRK_FEATURE) 434 report_type = HID_FEATURE_REPORT; 435 436 dev->battery_min = min; 437 dev->battery_max = max; 438 dev->battery_report_type = report_type; 439 dev->battery_report_id = field->report->id; 440 441 ret = power_supply_register(&dev->dev, battery); 442 if (ret != 0) { 443 hid_warn(dev, "can't register power supply: %d\n", ret); 444 kfree(battery->name); 445 battery->name = NULL; 446 } 447 448 power_supply_powers(battery, &dev->dev); 449 450 out: 451 return true; 452 } 453 454 static void hidinput_cleanup_battery(struct hid_device *dev) 455 { 456 if (!dev->battery.name) 457 return; 458 459 power_supply_unregister(&dev->battery); 460 kfree(dev->battery.name); 461 dev->battery.name = NULL; 462 } 463 #else /* !CONFIG_HID_BATTERY_STRENGTH */ 464 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 465 struct hid_field *field) 466 { 467 return false; 468 } 469 470 static void hidinput_cleanup_battery(struct hid_device *dev) 471 { 472 } 473 #endif /* CONFIG_HID_BATTERY_STRENGTH */ 474 475 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 476 struct hid_usage *usage) 477 { 478 struct input_dev *input = hidinput->input; 479 struct hid_device *device = input_get_drvdata(input); 480 int max = 0, code; 481 unsigned long *bit = NULL; 482 483 field->hidinput = hidinput; 484 485 if (field->flags & HID_MAIN_ITEM_CONSTANT) 486 goto ignore; 487 488 /* only LED usages are supported in output fields */ 489 if (field->report_type == HID_OUTPUT_REPORT && 490 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 491 goto ignore; 492 } 493 494 if (device->driver->input_mapping) { 495 int ret = device->driver->input_mapping(device, hidinput, field, 496 usage, &bit, &max); 497 if (ret > 0) 498 goto mapped; 499 if (ret < 0) 500 goto ignore; 501 } 502 503 switch (usage->hid & HID_USAGE_PAGE) { 504 case HID_UP_UNDEFINED: 505 goto ignore; 506 507 case HID_UP_KEYBOARD: 508 set_bit(EV_REP, input->evbit); 509 510 if ((usage->hid & HID_USAGE) < 256) { 511 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 512 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 513 } else 514 map_key(KEY_UNKNOWN); 515 516 break; 517 518 case HID_UP_BUTTON: 519 code = ((usage->hid - 1) & HID_USAGE); 520 521 switch (field->application) { 522 case HID_GD_MOUSE: 523 case HID_GD_POINTER: code += BTN_MOUSE; break; 524 case HID_GD_JOYSTICK: 525 if (code <= 0xf) 526 code += BTN_JOYSTICK; 527 else 528 code += BTN_TRIGGER_HAPPY - 0x10; 529 break; 530 case HID_GD_GAMEPAD: 531 if (code <= 0xf) 532 code += BTN_GAMEPAD; 533 else 534 code += BTN_TRIGGER_HAPPY - 0x10; 535 break; 536 default: 537 switch (field->physical) { 538 case HID_GD_MOUSE: 539 case HID_GD_POINTER: code += BTN_MOUSE; break; 540 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 541 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 542 default: code += BTN_MISC; 543 } 544 } 545 546 map_key(code); 547 break; 548 549 case HID_UP_SIMULATION: 550 switch (usage->hid & 0xffff) { 551 case 0xba: map_abs(ABS_RUDDER); break; 552 case 0xbb: map_abs(ABS_THROTTLE); break; 553 case 0xc4: map_abs(ABS_GAS); break; 554 case 0xc5: map_abs(ABS_BRAKE); break; 555 case 0xc8: map_abs(ABS_WHEEL); break; 556 default: goto ignore; 557 } 558 break; 559 560 case HID_UP_GENDESK: 561 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 562 switch (usage->hid & 0xf) { 563 case 0x1: map_key_clear(KEY_POWER); break; 564 case 0x2: map_key_clear(KEY_SLEEP); break; 565 case 0x3: map_key_clear(KEY_WAKEUP); break; 566 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; 567 case 0x5: map_key_clear(KEY_MENU); break; 568 case 0x6: map_key_clear(KEY_PROG1); break; 569 case 0x7: map_key_clear(KEY_HELP); break; 570 case 0x8: map_key_clear(KEY_EXIT); break; 571 case 0x9: map_key_clear(KEY_SELECT); break; 572 case 0xa: map_key_clear(KEY_RIGHT); break; 573 case 0xb: map_key_clear(KEY_LEFT); break; 574 case 0xc: map_key_clear(KEY_UP); break; 575 case 0xd: map_key_clear(KEY_DOWN); break; 576 case 0xe: map_key_clear(KEY_POWER2); break; 577 case 0xf: map_key_clear(KEY_RESTART); break; 578 default: goto unknown; 579 } 580 break; 581 } 582 583 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 584 switch (usage->hid) { 585 case HID_GD_UP: usage->hat_dir = 1; break; 586 case HID_GD_DOWN: usage->hat_dir = 5; break; 587 case HID_GD_RIGHT: usage->hat_dir = 3; break; 588 case HID_GD_LEFT: usage->hat_dir = 7; break; 589 default: goto unknown; 590 } 591 if (field->dpad) { 592 map_abs(field->dpad); 593 goto ignore; 594 } 595 map_abs(ABS_HAT0X); 596 break; 597 } 598 599 switch (usage->hid) { 600 /* These usage IDs map directly to the usage codes. */ 601 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 602 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 603 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL: 604 if (field->flags & HID_MAIN_ITEM_RELATIVE) 605 map_rel(usage->hid & 0xf); 606 else 607 map_abs(usage->hid & 0xf); 608 break; 609 610 case HID_GD_HATSWITCH: 611 usage->hat_min = field->logical_minimum; 612 usage->hat_max = field->logical_maximum; 613 map_abs(ABS_HAT0X); 614 break; 615 616 case HID_GD_START: map_key_clear(BTN_START); break; 617 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 618 619 default: goto unknown; 620 } 621 622 break; 623 624 case HID_UP_LED: 625 switch (usage->hid & 0xffff) { /* HID-Value: */ 626 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 627 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 628 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 629 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 630 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 631 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 632 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 633 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 634 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 635 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 636 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 637 638 default: goto ignore; 639 } 640 break; 641 642 case HID_UP_DIGITIZER: 643 switch (usage->hid & 0xff) { 644 case 0x00: /* Undefined */ 645 goto ignore; 646 647 case 0x30: /* TipPressure */ 648 if (!test_bit(BTN_TOUCH, input->keybit)) { 649 device->quirks |= HID_QUIRK_NOTOUCH; 650 set_bit(EV_KEY, input->evbit); 651 set_bit(BTN_TOUCH, input->keybit); 652 } 653 map_abs_clear(ABS_PRESSURE); 654 break; 655 656 case 0x32: /* InRange */ 657 switch (field->physical & 0xff) { 658 case 0x21: map_key(BTN_TOOL_MOUSE); break; 659 case 0x22: map_key(BTN_TOOL_FINGER); break; 660 default: map_key(BTN_TOOL_PEN); break; 661 } 662 break; 663 664 case 0x3c: /* Invert */ 665 map_key_clear(BTN_TOOL_RUBBER); 666 break; 667 668 case 0x3d: /* X Tilt */ 669 map_abs_clear(ABS_TILT_X); 670 break; 671 672 case 0x3e: /* Y Tilt */ 673 map_abs_clear(ABS_TILT_Y); 674 break; 675 676 case 0x33: /* Touch */ 677 case 0x42: /* TipSwitch */ 678 case 0x43: /* TipSwitch2 */ 679 device->quirks &= ~HID_QUIRK_NOTOUCH; 680 map_key_clear(BTN_TOUCH); 681 break; 682 683 case 0x44: /* BarrelSwitch */ 684 map_key_clear(BTN_STYLUS); 685 break; 686 687 case 0x46: /* TabletPick */ 688 map_key_clear(BTN_STYLUS2); 689 break; 690 691 default: goto unknown; 692 } 693 break; 694 695 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ 696 switch (usage->hid & HID_USAGE) { 697 case 0x000: goto ignore; 698 case 0x030: map_key_clear(KEY_POWER); break; 699 case 0x031: map_key_clear(KEY_RESTART); break; 700 case 0x032: map_key_clear(KEY_SLEEP); break; 701 case 0x034: map_key_clear(KEY_SLEEP); break; 702 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; 703 case 0x036: map_key_clear(BTN_MISC); break; 704 705 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ 706 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ 707 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ 708 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ 709 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ 710 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ 711 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ 712 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ 713 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ 714 715 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ 716 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ 717 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ 718 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ 719 case 0x069: map_key_clear(KEY_RED); break; 720 case 0x06a: map_key_clear(KEY_GREEN); break; 721 case 0x06b: map_key_clear(KEY_BLUE); break; 722 case 0x06c: map_key_clear(KEY_YELLOW); break; 723 case 0x06d: map_key_clear(KEY_ZOOM); break; 724 725 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; 726 case 0x083: map_key_clear(KEY_LAST); break; 727 case 0x084: map_key_clear(KEY_ENTER); break; 728 case 0x088: map_key_clear(KEY_PC); break; 729 case 0x089: map_key_clear(KEY_TV); break; 730 case 0x08a: map_key_clear(KEY_WWW); break; 731 case 0x08b: map_key_clear(KEY_DVD); break; 732 case 0x08c: map_key_clear(KEY_PHONE); break; 733 case 0x08d: map_key_clear(KEY_PROGRAM); break; 734 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 735 case 0x08f: map_key_clear(KEY_GAMES); break; 736 case 0x090: map_key_clear(KEY_MEMO); break; 737 case 0x091: map_key_clear(KEY_CD); break; 738 case 0x092: map_key_clear(KEY_VCR); break; 739 case 0x093: map_key_clear(KEY_TUNER); break; 740 case 0x094: map_key_clear(KEY_EXIT); break; 741 case 0x095: map_key_clear(KEY_HELP); break; 742 case 0x096: map_key_clear(KEY_TAPE); break; 743 case 0x097: map_key_clear(KEY_TV2); break; 744 case 0x098: map_key_clear(KEY_SAT); break; 745 case 0x09a: map_key_clear(KEY_PVR); break; 746 747 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 748 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 749 case 0x0a0: map_key_clear(KEY_VCR2); break; 750 751 case 0x0b0: map_key_clear(KEY_PLAY); break; 752 case 0x0b1: map_key_clear(KEY_PAUSE); break; 753 case 0x0b2: map_key_clear(KEY_RECORD); break; 754 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 755 case 0x0b4: map_key_clear(KEY_REWIND); break; 756 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 757 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 758 case 0x0b7: map_key_clear(KEY_STOPCD); break; 759 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 760 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 761 case 0x0b9: map_key_clear(KEY_SHUFFLE); break; 762 case 0x0bf: map_key_clear(KEY_SLOW); break; 763 764 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 765 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 766 case 0x0e2: map_key_clear(KEY_MUTE); break; 767 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 768 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 769 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 770 case 0x0f5: map_key_clear(KEY_SLOW); break; 771 772 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 773 case 0x183: map_key_clear(KEY_CONFIG); break; 774 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 775 case 0x185: map_key_clear(KEY_EDITOR); break; 776 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 777 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 778 case 0x188: map_key_clear(KEY_PRESENTATION); break; 779 case 0x189: map_key_clear(KEY_DATABASE); break; 780 case 0x18a: map_key_clear(KEY_MAIL); break; 781 case 0x18b: map_key_clear(KEY_NEWS); break; 782 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 783 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 784 case 0x18e: map_key_clear(KEY_CALENDAR); break; 785 case 0x191: map_key_clear(KEY_FINANCE); break; 786 case 0x192: map_key_clear(KEY_CALC); break; 787 case 0x193: map_key_clear(KEY_PLAYER); break; 788 case 0x194: map_key_clear(KEY_FILE); break; 789 case 0x196: map_key_clear(KEY_WWW); break; 790 case 0x199: map_key_clear(KEY_CHAT); break; 791 case 0x19c: map_key_clear(KEY_LOGOFF); break; 792 case 0x19e: map_key_clear(KEY_COFFEE); break; 793 case 0x1a6: map_key_clear(KEY_HELP); break; 794 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 795 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 796 case 0x1ae: map_key_clear(KEY_KEYBOARD); break; 797 case 0x1b6: map_key_clear(KEY_IMAGES); break; 798 case 0x1b7: map_key_clear(KEY_AUDIO); break; 799 case 0x1b8: map_key_clear(KEY_VIDEO); break; 800 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 801 case 0x1bd: map_key_clear(KEY_INFO); break; 802 case 0x201: map_key_clear(KEY_NEW); break; 803 case 0x202: map_key_clear(KEY_OPEN); break; 804 case 0x203: map_key_clear(KEY_CLOSE); break; 805 case 0x204: map_key_clear(KEY_EXIT); break; 806 case 0x207: map_key_clear(KEY_SAVE); break; 807 case 0x208: map_key_clear(KEY_PRINT); break; 808 case 0x209: map_key_clear(KEY_PROPS); break; 809 case 0x21a: map_key_clear(KEY_UNDO); break; 810 case 0x21b: map_key_clear(KEY_COPY); break; 811 case 0x21c: map_key_clear(KEY_CUT); break; 812 case 0x21d: map_key_clear(KEY_PASTE); break; 813 case 0x21f: map_key_clear(KEY_FIND); break; 814 case 0x221: map_key_clear(KEY_SEARCH); break; 815 case 0x222: map_key_clear(KEY_GOTO); break; 816 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 817 case 0x224: map_key_clear(KEY_BACK); break; 818 case 0x225: map_key_clear(KEY_FORWARD); break; 819 case 0x226: map_key_clear(KEY_STOP); break; 820 case 0x227: map_key_clear(KEY_REFRESH); break; 821 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 822 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 823 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 824 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 825 case 0x233: map_key_clear(KEY_SCROLLUP); break; 826 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 827 case 0x238: map_rel(REL_HWHEEL); break; 828 case 0x23d: map_key_clear(KEY_EDIT); break; 829 case 0x25f: map_key_clear(KEY_CANCEL); break; 830 case 0x269: map_key_clear(KEY_INSERT); break; 831 case 0x26a: map_key_clear(KEY_DELETE); break; 832 case 0x279: map_key_clear(KEY_REDO); break; 833 834 case 0x289: map_key_clear(KEY_REPLY); break; 835 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 836 case 0x28c: map_key_clear(KEY_SEND); break; 837 838 default: goto ignore; 839 } 840 break; 841 842 case HID_UP_GENDEVCTRLS: 843 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field)) 844 goto ignore; 845 else 846 goto unknown; 847 break; 848 849 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 850 set_bit(EV_REP, input->evbit); 851 switch (usage->hid & HID_USAGE) { 852 case 0x021: map_key_clear(KEY_PRINT); break; 853 case 0x070: map_key_clear(KEY_HP); break; 854 case 0x071: map_key_clear(KEY_CAMERA); break; 855 case 0x072: map_key_clear(KEY_SOUND); break; 856 case 0x073: map_key_clear(KEY_QUESTION); break; 857 case 0x080: map_key_clear(KEY_EMAIL); break; 858 case 0x081: map_key_clear(KEY_CHAT); break; 859 case 0x082: map_key_clear(KEY_SEARCH); break; 860 case 0x083: map_key_clear(KEY_CONNECT); break; 861 case 0x084: map_key_clear(KEY_FINANCE); break; 862 case 0x085: map_key_clear(KEY_SPORT); break; 863 case 0x086: map_key_clear(KEY_SHOP); break; 864 default: goto ignore; 865 } 866 break; 867 868 case HID_UP_HPVENDOR2: 869 set_bit(EV_REP, input->evbit); 870 switch (usage->hid & HID_USAGE) { 871 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; 872 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; 873 default: goto ignore; 874 } 875 break; 876 877 case HID_UP_MSVENDOR: 878 goto ignore; 879 880 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 881 set_bit(EV_REP, input->evbit); 882 goto ignore; 883 884 case HID_UP_LOGIVENDOR: 885 goto ignore; 886 887 case HID_UP_PID: 888 switch (usage->hid & HID_USAGE) { 889 case 0xa4: map_key_clear(BTN_DEAD); break; 890 default: goto ignore; 891 } 892 break; 893 894 default: 895 unknown: 896 if (field->report_size == 1) { 897 if (field->report->type == HID_OUTPUT_REPORT) { 898 map_led(LED_MISC); 899 break; 900 } 901 map_key(BTN_MISC); 902 break; 903 } 904 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 905 map_rel(REL_MISC); 906 break; 907 } 908 map_abs(ABS_MISC); 909 break; 910 } 911 912 mapped: 913 if (device->driver->input_mapped && device->driver->input_mapped(device, 914 hidinput, field, usage, &bit, &max) < 0) 915 goto ignore; 916 917 set_bit(usage->type, input->evbit); 918 919 while (usage->code <= max && test_and_set_bit(usage->code, bit)) 920 usage->code = find_next_zero_bit(bit, max + 1, usage->code); 921 922 if (usage->code > max) 923 goto ignore; 924 925 926 if (usage->type == EV_ABS) { 927 928 int a = field->logical_minimum; 929 int b = field->logical_maximum; 930 931 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 932 a = field->logical_minimum = 0; 933 b = field->logical_maximum = 255; 934 } 935 936 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 937 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 938 else input_set_abs_params(input, usage->code, a, b, 0, 0); 939 940 input_abs_set_res(input, usage->code, 941 hidinput_calc_abs_res(field, usage->code)); 942 943 /* use a larger default input buffer for MT devices */ 944 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 945 input_set_events_per_packet(input, 60); 946 } 947 948 if (usage->type == EV_ABS && 949 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 950 int i; 951 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 952 input_set_abs_params(input, i, -1, 1, 0, 0); 953 set_bit(i, input->absbit); 954 } 955 if (usage->hat_dir && !field->dpad) 956 field->dpad = usage->code; 957 } 958 959 /* for those devices which produce Consumer volume usage as relative, 960 * we emulate pressing volumeup/volumedown appropriate number of times 961 * in hidinput_hid_event() 962 */ 963 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 964 (usage->code == ABS_VOLUME)) { 965 set_bit(KEY_VOLUMEUP, input->keybit); 966 set_bit(KEY_VOLUMEDOWN, input->keybit); 967 } 968 969 if (usage->type == EV_KEY) { 970 set_bit(EV_MSC, input->evbit); 971 set_bit(MSC_SCAN, input->mscbit); 972 } 973 974 ignore: 975 return; 976 977 } 978 979 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 980 { 981 struct input_dev *input; 982 unsigned *quirks = &hid->quirks; 983 984 if (!field->hidinput) 985 return; 986 987 input = field->hidinput->input; 988 989 if (!usage->type) 990 return; 991 992 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 993 int hat_dir = usage->hat_dir; 994 if (!hat_dir) 995 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 996 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 997 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 998 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 999 return; 1000 } 1001 1002 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 1003 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 1004 return; 1005 } 1006 1007 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 1008 if (value) { 1009 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 1010 return; 1011 } 1012 input_event(input, usage->type, usage->code, 0); 1013 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 1014 return; 1015 } 1016 1017 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 1018 int a = field->logical_minimum; 1019 int b = field->logical_maximum; 1020 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 1021 } 1022 1023 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 1024 dbg_hid("Maximum Effects - %d\n",value); 1025 return; 1026 } 1027 1028 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 1029 dbg_hid("PID Pool Report\n"); 1030 return; 1031 } 1032 1033 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 1034 return; 1035 1036 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 1037 (usage->code == ABS_VOLUME)) { 1038 int count = abs(value); 1039 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 1040 int i; 1041 1042 for (i = 0; i < count; i++) { 1043 input_event(input, EV_KEY, direction, 1); 1044 input_sync(input); 1045 input_event(input, EV_KEY, direction, 0); 1046 input_sync(input); 1047 } 1048 return; 1049 } 1050 1051 /* 1052 * Ignore out-of-range values as per HID specification, 1053 * section 5.10 and 6.2.25. 1054 * 1055 * The logical_minimum < logical_maximum check is done so that we 1056 * don't unintentionally discard values sent by devices which 1057 * don't specify logical min and max. 1058 */ 1059 if ((field->flags & HID_MAIN_ITEM_VARIABLE) && 1060 (field->logical_minimum < field->logical_maximum) && 1061 (value < field->logical_minimum || 1062 value > field->logical_maximum)) { 1063 dbg_hid("Ignoring out-of-range value %x\n", value); 1064 return; 1065 } 1066 1067 /* report the usage code as scancode if the key status has changed */ 1068 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value) 1069 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 1070 1071 input_event(input, usage->type, usage->code, value); 1072 1073 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY)) 1074 input_event(input, usage->type, usage->code, 0); 1075 } 1076 1077 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 1078 { 1079 struct hid_input *hidinput; 1080 1081 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 1082 return; 1083 1084 list_for_each_entry(hidinput, &hid->inputs, list) 1085 input_sync(hidinput->input); 1086 } 1087 EXPORT_SYMBOL_GPL(hidinput_report_event); 1088 1089 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 1090 { 1091 struct hid_report *report; 1092 int i, j; 1093 1094 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 1095 for (i = 0; i < report->maxfield; i++) { 1096 *field = report->field[i]; 1097 for (j = 0; j < (*field)->maxusage; j++) 1098 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 1099 return j; 1100 } 1101 } 1102 return -1; 1103 } 1104 EXPORT_SYMBOL_GPL(hidinput_find_field); 1105 1106 struct hid_field *hidinput_get_led_field(struct hid_device *hid) 1107 { 1108 struct hid_report *report; 1109 struct hid_field *field; 1110 int i, j; 1111 1112 list_for_each_entry(report, 1113 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1114 list) { 1115 for (i = 0; i < report->maxfield; i++) { 1116 field = report->field[i]; 1117 for (j = 0; j < field->maxusage; j++) 1118 if (field->usage[j].type == EV_LED) 1119 return field; 1120 } 1121 } 1122 return NULL; 1123 } 1124 EXPORT_SYMBOL_GPL(hidinput_get_led_field); 1125 1126 unsigned int hidinput_count_leds(struct hid_device *hid) 1127 { 1128 struct hid_report *report; 1129 struct hid_field *field; 1130 int i, j; 1131 unsigned int count = 0; 1132 1133 list_for_each_entry(report, 1134 &hid->report_enum[HID_OUTPUT_REPORT].report_list, 1135 list) { 1136 for (i = 0; i < report->maxfield; i++) { 1137 field = report->field[i]; 1138 for (j = 0; j < field->maxusage; j++) 1139 if (field->usage[j].type == EV_LED && 1140 field->value[j]) 1141 count += 1; 1142 } 1143 } 1144 return count; 1145 } 1146 EXPORT_SYMBOL_GPL(hidinput_count_leds); 1147 1148 static void hidinput_led_worker(struct work_struct *work) 1149 { 1150 struct hid_device *hid = container_of(work, struct hid_device, 1151 led_work); 1152 struct hid_field *field; 1153 struct hid_report *report; 1154 int len; 1155 __u8 *buf; 1156 1157 field = hidinput_get_led_field(hid); 1158 if (!field) 1159 return; 1160 1161 /* 1162 * field->report is accessed unlocked regarding HID core. So there might 1163 * be another incoming SET-LED request from user-space, which changes 1164 * the LED state while we assemble our outgoing buffer. However, this 1165 * doesn't matter as hid_output_report() correctly converts it into a 1166 * boolean value no matter what information is currently set on the LED 1167 * field (even garbage). So the remote device will always get a valid 1168 * request. 1169 * And in case we send a wrong value, a next led worker is spawned 1170 * for every SET-LED request so the following worker will send the 1171 * correct value, guaranteed! 1172 */ 1173 1174 report = field->report; 1175 1176 /* use custom SET_REPORT request if possible (asynchronous) */ 1177 if (hid->ll_driver->request) 1178 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); 1179 1180 /* fall back to generic raw-output-report */ 1181 len = ((report->size - 1) >> 3) + 1 + (report->id > 0); 1182 buf = kmalloc(len, GFP_KERNEL); 1183 if (!buf) 1184 return; 1185 1186 hid_output_report(report, buf); 1187 /* synchronous output report */ 1188 hid->hid_output_raw_report(hid, buf, len, HID_OUTPUT_REPORT); 1189 kfree(buf); 1190 } 1191 1192 static int hidinput_input_event(struct input_dev *dev, unsigned int type, 1193 unsigned int code, int value) 1194 { 1195 struct hid_device *hid = input_get_drvdata(dev); 1196 struct hid_field *field; 1197 int offset; 1198 1199 if (type == EV_FF) 1200 return input_ff_event(dev, type, code, value); 1201 1202 if (type != EV_LED) 1203 return -1; 1204 1205 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { 1206 hid_warn(dev, "event field not found\n"); 1207 return -1; 1208 } 1209 1210 hid_set_field(field, offset, value); 1211 1212 schedule_work(&hid->led_work); 1213 return 0; 1214 } 1215 1216 static int hidinput_open(struct input_dev *dev) 1217 { 1218 struct hid_device *hid = input_get_drvdata(dev); 1219 1220 return hid_hw_open(hid); 1221 } 1222 1223 static void hidinput_close(struct input_dev *dev) 1224 { 1225 struct hid_device *hid = input_get_drvdata(dev); 1226 1227 hid_hw_close(hid); 1228 } 1229 1230 static void report_features(struct hid_device *hid) 1231 { 1232 struct hid_driver *drv = hid->driver; 1233 struct hid_report_enum *rep_enum; 1234 struct hid_report *rep; 1235 int i, j; 1236 1237 rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; 1238 list_for_each_entry(rep, &rep_enum->report_list, list) 1239 for (i = 0; i < rep->maxfield; i++) 1240 for (j = 0; j < rep->field[i]->maxusage; j++) { 1241 /* Verify if Battery Strength feature is available */ 1242 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]); 1243 1244 if (drv->feature_mapping) 1245 drv->feature_mapping(hid, rep->field[i], 1246 rep->field[i]->usage + j); 1247 } 1248 } 1249 1250 static struct hid_input *hidinput_allocate(struct hid_device *hid) 1251 { 1252 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 1253 struct input_dev *input_dev = input_allocate_device(); 1254 if (!hidinput || !input_dev) { 1255 kfree(hidinput); 1256 input_free_device(input_dev); 1257 hid_err(hid, "Out of memory during hid input probe\n"); 1258 return NULL; 1259 } 1260 1261 input_set_drvdata(input_dev, hid); 1262 if (hid->ll_driver->hidinput_input_event) 1263 input_dev->event = hid->ll_driver->hidinput_input_event; 1264 else if (hid->ll_driver->request || hid->hid_output_raw_report) 1265 input_dev->event = hidinput_input_event; 1266 input_dev->open = hidinput_open; 1267 input_dev->close = hidinput_close; 1268 input_dev->setkeycode = hidinput_setkeycode; 1269 input_dev->getkeycode = hidinput_getkeycode; 1270 1271 input_dev->name = hid->name; 1272 input_dev->phys = hid->phys; 1273 input_dev->uniq = hid->uniq; 1274 input_dev->id.bustype = hid->bus; 1275 input_dev->id.vendor = hid->vendor; 1276 input_dev->id.product = hid->product; 1277 input_dev->id.version = hid->version; 1278 input_dev->dev.parent = hid->dev.parent; 1279 hidinput->input = input_dev; 1280 list_add_tail(&hidinput->list, &hid->inputs); 1281 1282 return hidinput; 1283 } 1284 1285 static bool hidinput_has_been_populated(struct hid_input *hidinput) 1286 { 1287 int i; 1288 unsigned long r = 0; 1289 1290 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) 1291 r |= hidinput->input->evbit[i]; 1292 1293 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) 1294 r |= hidinput->input->keybit[i]; 1295 1296 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) 1297 r |= hidinput->input->relbit[i]; 1298 1299 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) 1300 r |= hidinput->input->absbit[i]; 1301 1302 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) 1303 r |= hidinput->input->mscbit[i]; 1304 1305 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) 1306 r |= hidinput->input->ledbit[i]; 1307 1308 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) 1309 r |= hidinput->input->sndbit[i]; 1310 1311 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) 1312 r |= hidinput->input->ffbit[i]; 1313 1314 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) 1315 r |= hidinput->input->swbit[i]; 1316 1317 return !!r; 1318 } 1319 1320 static void hidinput_cleanup_hidinput(struct hid_device *hid, 1321 struct hid_input *hidinput) 1322 { 1323 struct hid_report *report; 1324 int i, k; 1325 1326 list_del(&hidinput->list); 1327 input_free_device(hidinput->input); 1328 1329 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1330 if (k == HID_OUTPUT_REPORT && 1331 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1332 continue; 1333 1334 list_for_each_entry(report, &hid->report_enum[k].report_list, 1335 list) { 1336 1337 for (i = 0; i < report->maxfield; i++) 1338 if (report->field[i]->hidinput == hidinput) 1339 report->field[i]->hidinput = NULL; 1340 } 1341 } 1342 1343 kfree(hidinput); 1344 } 1345 1346 /* 1347 * Register the input device; print a message. 1348 * Configure the input layer interface 1349 * Read all reports and initialize the absolute field values. 1350 */ 1351 1352 int hidinput_connect(struct hid_device *hid, unsigned int force) 1353 { 1354 struct hid_driver *drv = hid->driver; 1355 struct hid_report *report; 1356 struct hid_input *hidinput = NULL; 1357 int i, j, k; 1358 1359 INIT_LIST_HEAD(&hid->inputs); 1360 INIT_WORK(&hid->led_work, hidinput_led_worker); 1361 1362 if (!force) { 1363 for (i = 0; i < hid->maxcollection; i++) { 1364 struct hid_collection *col = &hid->collection[i]; 1365 if (col->type == HID_COLLECTION_APPLICATION || 1366 col->type == HID_COLLECTION_PHYSICAL) 1367 if (IS_INPUT_APPLICATION(col->usage)) 1368 break; 1369 } 1370 1371 if (i == hid->maxcollection) 1372 return -1; 1373 } 1374 1375 report_features(hid); 1376 1377 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 1378 if (k == HID_OUTPUT_REPORT && 1379 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 1380 continue; 1381 1382 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 1383 1384 if (!report->maxfield) 1385 continue; 1386 1387 if (!hidinput) { 1388 hidinput = hidinput_allocate(hid); 1389 if (!hidinput) 1390 goto out_unwind; 1391 } 1392 1393 for (i = 0; i < report->maxfield; i++) 1394 for (j = 0; j < report->field[i]->maxusage; j++) 1395 hidinput_configure_usage(hidinput, report->field[i], 1396 report->field[i]->usage + j); 1397 1398 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) && 1399 !hidinput_has_been_populated(hidinput)) 1400 continue; 1401 1402 if (hid->quirks & HID_QUIRK_MULTI_INPUT) { 1403 /* This will leave hidinput NULL, so that it 1404 * allocates another one if we have more inputs on 1405 * the same interface. Some devices (e.g. Happ's 1406 * UGCI) cram a lot of unrelated inputs into the 1407 * same interface. */ 1408 hidinput->report = report; 1409 if (drv->input_configured) 1410 drv->input_configured(hid, hidinput); 1411 if (input_register_device(hidinput->input)) 1412 goto out_cleanup; 1413 hidinput = NULL; 1414 } 1415 } 1416 } 1417 1418 if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) && 1419 !hidinput_has_been_populated(hidinput)) { 1420 /* no need to register an input device not populated */ 1421 hidinput_cleanup_hidinput(hid, hidinput); 1422 hidinput = NULL; 1423 } 1424 1425 if (list_empty(&hid->inputs)) { 1426 hid_err(hid, "No inputs registered, leaving\n"); 1427 goto out_unwind; 1428 } 1429 1430 if (hidinput) { 1431 if (drv->input_configured) 1432 drv->input_configured(hid, hidinput); 1433 if (input_register_device(hidinput->input)) 1434 goto out_cleanup; 1435 } 1436 1437 return 0; 1438 1439 out_cleanup: 1440 list_del(&hidinput->list); 1441 input_free_device(hidinput->input); 1442 kfree(hidinput); 1443 out_unwind: 1444 /* unwind the ones we already registered */ 1445 hidinput_disconnect(hid); 1446 1447 return -1; 1448 } 1449 EXPORT_SYMBOL_GPL(hidinput_connect); 1450 1451 void hidinput_disconnect(struct hid_device *hid) 1452 { 1453 struct hid_input *hidinput, *next; 1454 1455 hidinput_cleanup_battery(hid); 1456 1457 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 1458 list_del(&hidinput->list); 1459 input_unregister_device(hidinput->input); 1460 kfree(hidinput); 1461 } 1462 1463 /* led_work is spawned by input_dev callbacks, but doesn't access the 1464 * parent input_dev at all. Once all input devices are removed, we 1465 * know that led_work will never get restarted, so we can cancel it 1466 * synchronously and are safe. */ 1467 cancel_work_sync(&hid->led_work); 1468 } 1469 EXPORT_SYMBOL_GPL(hidinput_disconnect); 1470 1471