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