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 #define unk KEY_UNKNOWN 36 37 static const unsigned char hid_keyboard[256] = { 38 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, 39 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, 40 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, 41 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, 42 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, 43 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, 44 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, 45 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, 46 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk, 47 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 48 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 49 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,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,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 52 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, 53 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk 54 }; 55 56 static const struct { 57 __s32 x; 58 __s32 y; 59 } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; 60 61 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c)) 62 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c)) 63 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c)) 64 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c)) 65 66 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 67 &max, EV_ABS, (c)) 68 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ 69 &max, EV_KEY, (c)) 70 71 static bool match_scancode(struct hid_usage *usage, 72 unsigned int cur_idx, unsigned int scancode) 73 { 74 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode; 75 } 76 77 static bool match_keycode(struct hid_usage *usage, 78 unsigned int cur_idx, unsigned int keycode) 79 { 80 /* 81 * We should exclude unmapped usages when doing lookup by keycode. 82 */ 83 return (usage->type == EV_KEY && usage->code == keycode); 84 } 85 86 static bool match_index(struct hid_usage *usage, 87 unsigned int cur_idx, unsigned int idx) 88 { 89 return cur_idx == idx; 90 } 91 92 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage, 93 unsigned int cur_idx, unsigned int val); 94 95 static struct hid_usage *hidinput_find_key(struct hid_device *hid, 96 hid_usage_cmp_t match, 97 unsigned int value, 98 unsigned int *usage_idx) 99 { 100 unsigned int i, j, k, cur_idx = 0; 101 struct hid_report *report; 102 struct hid_usage *usage; 103 104 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 105 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 106 for (i = 0; i < report->maxfield; i++) { 107 for (j = 0; j < report->field[i]->maxusage; j++) { 108 usage = report->field[i]->usage + j; 109 if (usage->type == EV_KEY || usage->type == 0) { 110 if (match(usage, cur_idx, value)) { 111 if (usage_idx) 112 *usage_idx = cur_idx; 113 return usage; 114 } 115 cur_idx++; 116 } 117 } 118 } 119 } 120 } 121 return NULL; 122 } 123 124 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid, 125 const struct input_keymap_entry *ke, 126 unsigned int *index) 127 { 128 struct hid_usage *usage; 129 unsigned int scancode; 130 131 if (ke->flags & INPUT_KEYMAP_BY_INDEX) 132 usage = hidinput_find_key(hid, match_index, ke->index, index); 133 else if (input_scancode_to_scalar(ke, &scancode) == 0) 134 usage = hidinput_find_key(hid, match_scancode, scancode, index); 135 else 136 usage = NULL; 137 138 return usage; 139 } 140 141 static int hidinput_getkeycode(struct input_dev *dev, 142 struct input_keymap_entry *ke) 143 { 144 struct hid_device *hid = input_get_drvdata(dev); 145 struct hid_usage *usage; 146 unsigned int scancode, index; 147 148 usage = hidinput_locate_usage(hid, ke, &index); 149 if (usage) { 150 ke->keycode = usage->type == EV_KEY ? 151 usage->code : KEY_RESERVED; 152 ke->index = index; 153 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE); 154 ke->len = sizeof(scancode); 155 memcpy(ke->scancode, &scancode, sizeof(scancode)); 156 return 0; 157 } 158 159 return -EINVAL; 160 } 161 162 static int hidinput_setkeycode(struct input_dev *dev, 163 const struct input_keymap_entry *ke, 164 unsigned int *old_keycode) 165 { 166 struct hid_device *hid = input_get_drvdata(dev); 167 struct hid_usage *usage; 168 169 usage = hidinput_locate_usage(hid, ke, NULL); 170 if (usage) { 171 *old_keycode = usage->type == EV_KEY ? 172 usage->code : KEY_RESERVED; 173 usage->code = ke->keycode; 174 175 clear_bit(*old_keycode, dev->keybit); 176 set_bit(usage->code, dev->keybit); 177 dbg_hid("Assigned keycode %d to HID usage code %x\n", 178 usage->code, usage->hid); 179 180 /* 181 * Set the keybit for the old keycode if the old keycode is used 182 * by another key 183 */ 184 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL)) 185 set_bit(*old_keycode, dev->keybit); 186 187 return 0; 188 } 189 190 return -EINVAL; 191 } 192 193 194 /** 195 * hidinput_calc_abs_res - calculate an absolute axis resolution 196 * @field: the HID report field to calculate resolution for 197 * @code: axis code 198 * 199 * The formula is: 200 * (logical_maximum - logical_minimum) 201 * resolution = ---------------------------------------------------------- 202 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent 203 * 204 * as seen in the HID specification v1.11 6.2.2.7 Global Items. 205 * 206 * Only exponent 1 length units are processed. Centimeters and inches are 207 * converted to millimeters. Degrees are converted to radians. 208 */ 209 static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) 210 { 211 __s32 unit_exponent = field->unit_exponent; 212 __s32 logical_extents = field->logical_maximum - 213 field->logical_minimum; 214 __s32 physical_extents = field->physical_maximum - 215 field->physical_minimum; 216 __s32 prev; 217 218 /* Check if the extents are sane */ 219 if (logical_extents <= 0 || physical_extents <= 0) 220 return 0; 221 222 /* 223 * Verify and convert units. 224 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding 225 */ 226 if (code == ABS_X || code == ABS_Y || code == ABS_Z) { 227 if (field->unit == 0x11) { /* If centimeters */ 228 /* Convert to millimeters */ 229 unit_exponent += 1; 230 } else if (field->unit == 0x13) { /* If inches */ 231 /* Convert to millimeters */ 232 prev = physical_extents; 233 physical_extents *= 254; 234 if (physical_extents < prev) 235 return 0; 236 unit_exponent -= 1; 237 } else { 238 return 0; 239 } 240 } else if (code == ABS_RX || code == ABS_RY || code == ABS_RZ) { 241 if (field->unit == 0x14) { /* If degrees */ 242 /* Convert to radians */ 243 prev = logical_extents; 244 logical_extents *= 573; 245 if (logical_extents < prev) 246 return 0; 247 unit_exponent += 1; 248 } else if (field->unit != 0x12) { /* If not radians */ 249 return 0; 250 } 251 } else { 252 return 0; 253 } 254 255 /* Apply negative unit exponent */ 256 for (; unit_exponent < 0; unit_exponent++) { 257 prev = logical_extents; 258 logical_extents *= 10; 259 if (logical_extents < prev) 260 return 0; 261 } 262 /* Apply positive unit exponent */ 263 for (; unit_exponent > 0; unit_exponent--) { 264 prev = physical_extents; 265 physical_extents *= 10; 266 if (physical_extents < prev) 267 return 0; 268 } 269 270 /* Calculate resolution */ 271 return logical_extents / physical_extents; 272 } 273 274 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 275 struct hid_usage *usage) 276 { 277 struct input_dev *input = hidinput->input; 278 struct hid_device *device = input_get_drvdata(input); 279 int max = 0, code; 280 unsigned long *bit = NULL; 281 282 field->hidinput = hidinput; 283 284 if (field->flags & HID_MAIN_ITEM_CONSTANT) 285 goto ignore; 286 287 /* only LED usages are supported in output fields */ 288 if (field->report_type == HID_OUTPUT_REPORT && 289 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { 290 goto ignore; 291 } 292 293 if (field->report_type == HID_FEATURE_REPORT) { 294 if (device->driver->feature_mapping) { 295 device->driver->feature_mapping(device, hidinput, field, 296 usage); 297 } 298 goto ignore; 299 } 300 301 if (device->driver->input_mapping) { 302 int ret = device->driver->input_mapping(device, hidinput, field, 303 usage, &bit, &max); 304 if (ret > 0) 305 goto mapped; 306 if (ret < 0) 307 goto ignore; 308 } 309 310 switch (usage->hid & HID_USAGE_PAGE) { 311 case HID_UP_UNDEFINED: 312 goto ignore; 313 314 case HID_UP_KEYBOARD: 315 set_bit(EV_REP, input->evbit); 316 317 if ((usage->hid & HID_USAGE) < 256) { 318 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; 319 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); 320 } else 321 map_key(KEY_UNKNOWN); 322 323 break; 324 325 case HID_UP_BUTTON: 326 code = ((usage->hid - 1) & HID_USAGE); 327 328 switch (field->application) { 329 case HID_GD_MOUSE: 330 case HID_GD_POINTER: code += BTN_MOUSE; break; 331 case HID_GD_JOYSTICK: 332 if (code <= 0xf) 333 code += BTN_JOYSTICK; 334 else 335 code += BTN_TRIGGER_HAPPY; 336 break; 337 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 338 default: 339 switch (field->physical) { 340 case HID_GD_MOUSE: 341 case HID_GD_POINTER: code += BTN_MOUSE; break; 342 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; 343 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; 344 default: code += BTN_MISC; 345 } 346 } 347 348 map_key(code); 349 break; 350 351 case HID_UP_SIMULATION: 352 switch (usage->hid & 0xffff) { 353 case 0xba: map_abs(ABS_RUDDER); break; 354 case 0xbb: map_abs(ABS_THROTTLE); break; 355 case 0xc4: map_abs(ABS_GAS); break; 356 case 0xc5: map_abs(ABS_BRAKE); break; 357 case 0xc8: map_abs(ABS_WHEEL); break; 358 default: goto ignore; 359 } 360 break; 361 362 case HID_UP_GENDESK: 363 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 364 switch (usage->hid & 0xf) { 365 case 0x1: map_key_clear(KEY_POWER); break; 366 case 0x2: map_key_clear(KEY_SLEEP); break; 367 case 0x3: map_key_clear(KEY_WAKEUP); break; 368 default: goto unknown; 369 } 370 break; 371 } 372 373 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ 374 switch (usage->hid) { 375 case HID_GD_UP: usage->hat_dir = 1; break; 376 case HID_GD_DOWN: usage->hat_dir = 5; break; 377 case HID_GD_RIGHT: usage->hat_dir = 3; break; 378 case HID_GD_LEFT: usage->hat_dir = 7; break; 379 default: goto unknown; 380 } 381 if (field->dpad) { 382 map_abs(field->dpad); 383 goto ignore; 384 } 385 map_abs(ABS_HAT0X); 386 break; 387 } 388 389 switch (usage->hid) { 390 /* These usage IDs map directly to the usage codes. */ 391 case HID_GD_X: case HID_GD_Y: case HID_GD_Z: 392 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: 393 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL: 394 if (field->flags & HID_MAIN_ITEM_RELATIVE) 395 map_rel(usage->hid & 0xf); 396 else 397 map_abs(usage->hid & 0xf); 398 break; 399 400 case HID_GD_HATSWITCH: 401 usage->hat_min = field->logical_minimum; 402 usage->hat_max = field->logical_maximum; 403 map_abs(ABS_HAT0X); 404 break; 405 406 case HID_GD_START: map_key_clear(BTN_START); break; 407 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; 408 409 default: goto unknown; 410 } 411 412 break; 413 414 case HID_UP_LED: 415 switch (usage->hid & 0xffff) { /* HID-Value: */ 416 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ 417 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ 418 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ 419 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ 420 case 0x05: map_led (LED_KANA); break; /* "Kana" */ 421 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ 422 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ 423 case 0x09: map_led (LED_MUTE); break; /* "Mute" */ 424 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ 425 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ 426 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ 427 428 default: goto ignore; 429 } 430 break; 431 432 case HID_UP_DIGITIZER: 433 switch (usage->hid & 0xff) { 434 case 0x00: /* Undefined */ 435 goto ignore; 436 437 case 0x30: /* TipPressure */ 438 if (!test_bit(BTN_TOUCH, input->keybit)) { 439 device->quirks |= HID_QUIRK_NOTOUCH; 440 set_bit(EV_KEY, input->evbit); 441 set_bit(BTN_TOUCH, input->keybit); 442 } 443 map_abs_clear(ABS_PRESSURE); 444 break; 445 446 case 0x32: /* InRange */ 447 switch (field->physical & 0xff) { 448 case 0x21: map_key(BTN_TOOL_MOUSE); break; 449 case 0x22: map_key(BTN_TOOL_FINGER); break; 450 default: map_key(BTN_TOOL_PEN); break; 451 } 452 break; 453 454 case 0x3c: /* Invert */ 455 map_key_clear(BTN_TOOL_RUBBER); 456 break; 457 458 case 0x33: /* Touch */ 459 case 0x42: /* TipSwitch */ 460 case 0x43: /* TipSwitch2 */ 461 device->quirks &= ~HID_QUIRK_NOTOUCH; 462 map_key_clear(BTN_TOUCH); 463 break; 464 465 case 0x44: /* BarrelSwitch */ 466 map_key_clear(BTN_STYLUS); 467 break; 468 469 case 0x46: /* TabletPick */ 470 map_key_clear(BTN_STYLUS2); 471 break; 472 473 default: goto unknown; 474 } 475 break; 476 477 case HID_UP_CONSUMER: /* USB HUT v1.1, pages 56-62 */ 478 switch (usage->hid & HID_USAGE) { 479 case 0x000: goto ignore; 480 case 0x034: map_key_clear(KEY_SLEEP); break; 481 case 0x036: map_key_clear(BTN_MISC); break; 482 483 case 0x040: map_key_clear(KEY_MENU); break; 484 case 0x045: map_key_clear(KEY_RADIO); break; 485 486 case 0x083: map_key_clear(KEY_LAST); break; 487 case 0x088: map_key_clear(KEY_PC); break; 488 case 0x089: map_key_clear(KEY_TV); break; 489 case 0x08a: map_key_clear(KEY_WWW); break; 490 case 0x08b: map_key_clear(KEY_DVD); break; 491 case 0x08c: map_key_clear(KEY_PHONE); break; 492 case 0x08d: map_key_clear(KEY_PROGRAM); break; 493 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; 494 case 0x08f: map_key_clear(KEY_GAMES); break; 495 case 0x090: map_key_clear(KEY_MEMO); break; 496 case 0x091: map_key_clear(KEY_CD); break; 497 case 0x092: map_key_clear(KEY_VCR); break; 498 case 0x093: map_key_clear(KEY_TUNER); break; 499 case 0x094: map_key_clear(KEY_EXIT); break; 500 case 0x095: map_key_clear(KEY_HELP); break; 501 case 0x096: map_key_clear(KEY_TAPE); break; 502 case 0x097: map_key_clear(KEY_TV2); break; 503 case 0x098: map_key_clear(KEY_SAT); break; 504 case 0x09a: map_key_clear(KEY_PVR); break; 505 506 case 0x09c: map_key_clear(KEY_CHANNELUP); break; 507 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; 508 case 0x0a0: map_key_clear(KEY_VCR2); break; 509 510 case 0x0b0: map_key_clear(KEY_PLAY); break; 511 case 0x0b1: map_key_clear(KEY_PAUSE); break; 512 case 0x0b2: map_key_clear(KEY_RECORD); break; 513 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; 514 case 0x0b4: map_key_clear(KEY_REWIND); break; 515 case 0x0b5: map_key_clear(KEY_NEXTSONG); break; 516 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; 517 case 0x0b7: map_key_clear(KEY_STOPCD); break; 518 case 0x0b8: map_key_clear(KEY_EJECTCD); break; 519 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; 520 521 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; 522 case 0x0e0: map_abs_clear(ABS_VOLUME); break; 523 case 0x0e2: map_key_clear(KEY_MUTE); break; 524 case 0x0e5: map_key_clear(KEY_BASSBOOST); break; 525 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; 526 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; 527 528 case 0x182: map_key_clear(KEY_BOOKMARKS); break; 529 case 0x183: map_key_clear(KEY_CONFIG); break; 530 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; 531 case 0x185: map_key_clear(KEY_EDITOR); break; 532 case 0x186: map_key_clear(KEY_SPREADSHEET); break; 533 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; 534 case 0x188: map_key_clear(KEY_PRESENTATION); break; 535 case 0x189: map_key_clear(KEY_DATABASE); break; 536 case 0x18a: map_key_clear(KEY_MAIL); break; 537 case 0x18b: map_key_clear(KEY_NEWS); break; 538 case 0x18c: map_key_clear(KEY_VOICEMAIL); break; 539 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; 540 case 0x18e: map_key_clear(KEY_CALENDAR); break; 541 case 0x191: map_key_clear(KEY_FINANCE); break; 542 case 0x192: map_key_clear(KEY_CALC); break; 543 case 0x194: map_key_clear(KEY_FILE); break; 544 case 0x196: map_key_clear(KEY_WWW); break; 545 case 0x199: map_key_clear(KEY_CHAT); break; 546 case 0x19c: map_key_clear(KEY_LOGOFF); break; 547 case 0x19e: map_key_clear(KEY_COFFEE); break; 548 case 0x1a6: map_key_clear(KEY_HELP); break; 549 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; 550 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; 551 case 0x1b6: map_key_clear(KEY_MEDIA); break; 552 case 0x1b7: map_key_clear(KEY_SOUND); break; 553 case 0x1bc: map_key_clear(KEY_MESSENGER); break; 554 case 0x1bd: map_key_clear(KEY_INFO); break; 555 case 0x201: map_key_clear(KEY_NEW); break; 556 case 0x202: map_key_clear(KEY_OPEN); break; 557 case 0x203: map_key_clear(KEY_CLOSE); break; 558 case 0x204: map_key_clear(KEY_EXIT); break; 559 case 0x207: map_key_clear(KEY_SAVE); break; 560 case 0x208: map_key_clear(KEY_PRINT); break; 561 case 0x209: map_key_clear(KEY_PROPS); break; 562 case 0x21a: map_key_clear(KEY_UNDO); break; 563 case 0x21b: map_key_clear(KEY_COPY); break; 564 case 0x21c: map_key_clear(KEY_CUT); break; 565 case 0x21d: map_key_clear(KEY_PASTE); break; 566 case 0x21f: map_key_clear(KEY_FIND); break; 567 case 0x221: map_key_clear(KEY_SEARCH); break; 568 case 0x222: map_key_clear(KEY_GOTO); break; 569 case 0x223: map_key_clear(KEY_HOMEPAGE); break; 570 case 0x224: map_key_clear(KEY_BACK); break; 571 case 0x225: map_key_clear(KEY_FORWARD); break; 572 case 0x226: map_key_clear(KEY_STOP); break; 573 case 0x227: map_key_clear(KEY_REFRESH); break; 574 case 0x22a: map_key_clear(KEY_BOOKMARKS); break; 575 case 0x22d: map_key_clear(KEY_ZOOMIN); break; 576 case 0x22e: map_key_clear(KEY_ZOOMOUT); break; 577 case 0x22f: map_key_clear(KEY_ZOOMRESET); break; 578 case 0x233: map_key_clear(KEY_SCROLLUP); break; 579 case 0x234: map_key_clear(KEY_SCROLLDOWN); break; 580 case 0x238: map_rel(REL_HWHEEL); break; 581 case 0x25f: map_key_clear(KEY_CANCEL); break; 582 case 0x279: map_key_clear(KEY_REDO); break; 583 584 case 0x289: map_key_clear(KEY_REPLY); break; 585 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; 586 case 0x28c: map_key_clear(KEY_SEND); break; 587 588 default: goto ignore; 589 } 590 break; 591 592 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ 593 set_bit(EV_REP, input->evbit); 594 switch (usage->hid & HID_USAGE) { 595 case 0x021: map_key_clear(KEY_PRINT); break; 596 case 0x070: map_key_clear(KEY_HP); break; 597 case 0x071: map_key_clear(KEY_CAMERA); break; 598 case 0x072: map_key_clear(KEY_SOUND); break; 599 case 0x073: map_key_clear(KEY_QUESTION); break; 600 case 0x080: map_key_clear(KEY_EMAIL); break; 601 case 0x081: map_key_clear(KEY_CHAT); break; 602 case 0x082: map_key_clear(KEY_SEARCH); break; 603 case 0x083: map_key_clear(KEY_CONNECT); break; 604 case 0x084: map_key_clear(KEY_FINANCE); break; 605 case 0x085: map_key_clear(KEY_SPORT); break; 606 case 0x086: map_key_clear(KEY_SHOP); break; 607 default: goto ignore; 608 } 609 break; 610 611 case HID_UP_MSVENDOR: 612 goto ignore; 613 614 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ 615 set_bit(EV_REP, input->evbit); 616 goto ignore; 617 618 case HID_UP_LOGIVENDOR: 619 goto ignore; 620 621 case HID_UP_PID: 622 switch (usage->hid & HID_USAGE) { 623 case 0xa4: map_key_clear(BTN_DEAD); break; 624 default: goto ignore; 625 } 626 break; 627 628 default: 629 unknown: 630 if (field->report_size == 1) { 631 if (field->report->type == HID_OUTPUT_REPORT) { 632 map_led(LED_MISC); 633 break; 634 } 635 map_key(BTN_MISC); 636 break; 637 } 638 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 639 map_rel(REL_MISC); 640 break; 641 } 642 map_abs(ABS_MISC); 643 break; 644 } 645 646 mapped: 647 if (device->driver->input_mapped && device->driver->input_mapped(device, 648 hidinput, field, usage, &bit, &max) < 0) 649 goto ignore; 650 651 set_bit(usage->type, input->evbit); 652 653 while (usage->code <= max && test_and_set_bit(usage->code, bit)) 654 usage->code = find_next_zero_bit(bit, max + 1, usage->code); 655 656 if (usage->code > max) 657 goto ignore; 658 659 660 if (usage->type == EV_ABS) { 661 662 int a = field->logical_minimum; 663 int b = field->logical_maximum; 664 665 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 666 a = field->logical_minimum = 0; 667 b = field->logical_maximum = 255; 668 } 669 670 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) 671 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); 672 else input_set_abs_params(input, usage->code, a, b, 0, 0); 673 674 input_abs_set_res(input, usage->code, 675 hidinput_calc_abs_res(field, usage->code)); 676 677 /* use a larger default input buffer for MT devices */ 678 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) 679 input_set_events_per_packet(input, 60); 680 } 681 682 if (usage->type == EV_ABS && 683 (usage->hat_min < usage->hat_max || usage->hat_dir)) { 684 int i; 685 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 686 input_set_abs_params(input, i, -1, 1, 0, 0); 687 set_bit(i, input->absbit); 688 } 689 if (usage->hat_dir && !field->dpad) 690 field->dpad = usage->code; 691 } 692 693 /* for those devices which produce Consumer volume usage as relative, 694 * we emulate pressing volumeup/volumedown appropriate number of times 695 * in hidinput_hid_event() 696 */ 697 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 698 (usage->code == ABS_VOLUME)) { 699 set_bit(KEY_VOLUMEUP, input->keybit); 700 set_bit(KEY_VOLUMEDOWN, input->keybit); 701 } 702 703 if (usage->type == EV_KEY) { 704 set_bit(EV_MSC, input->evbit); 705 set_bit(MSC_SCAN, input->mscbit); 706 } 707 708 ignore: 709 return; 710 711 } 712 713 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 714 { 715 struct input_dev *input; 716 unsigned *quirks = &hid->quirks; 717 718 if (!field->hidinput) 719 return; 720 721 input = field->hidinput->input; 722 723 if (!usage->type) 724 return; 725 726 if (usage->hat_min < usage->hat_max || usage->hat_dir) { 727 int hat_dir = usage->hat_dir; 728 if (!hat_dir) 729 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 730 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; 731 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); 732 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); 733 return; 734 } 735 736 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 737 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 738 return; 739 } 740 741 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 742 if (value) { 743 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 744 return; 745 } 746 input_event(input, usage->type, usage->code, 0); 747 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 748 return; 749 } 750 751 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 752 int a = field->logical_minimum; 753 int b = field->logical_maximum; 754 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 755 } 756 757 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ 758 dbg_hid("Maximum Effects - %d\n",value); 759 return; 760 } 761 762 if (usage->hid == (HID_UP_PID | 0x7fUL)) { 763 dbg_hid("PID Pool Report\n"); 764 return; 765 } 766 767 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ 768 return; 769 770 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && 771 (usage->code == ABS_VOLUME)) { 772 int count = abs(value); 773 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; 774 int i; 775 776 for (i = 0; i < count; i++) { 777 input_event(input, EV_KEY, direction, 1); 778 input_sync(input); 779 input_event(input, EV_KEY, direction, 0); 780 input_sync(input); 781 } 782 return; 783 } 784 785 /* report the usage code as scancode if the key status has changed */ 786 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value) 787 input_event(input, EV_MSC, MSC_SCAN, usage->hid); 788 789 input_event(input, usage->type, usage->code, value); 790 791 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY)) 792 input_event(input, usage->type, usage->code, 0); 793 } 794 795 void hidinput_report_event(struct hid_device *hid, struct hid_report *report) 796 { 797 struct hid_input *hidinput; 798 799 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) 800 return; 801 802 list_for_each_entry(hidinput, &hid->inputs, list) 803 input_sync(hidinput->input); 804 } 805 EXPORT_SYMBOL_GPL(hidinput_report_event); 806 807 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) 808 { 809 struct hid_report *report; 810 int i, j; 811 812 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { 813 for (i = 0; i < report->maxfield; i++) { 814 *field = report->field[i]; 815 for (j = 0; j < (*field)->maxusage; j++) 816 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) 817 return j; 818 } 819 } 820 return -1; 821 } 822 EXPORT_SYMBOL_GPL(hidinput_find_field); 823 824 static int hidinput_open(struct input_dev *dev) 825 { 826 struct hid_device *hid = input_get_drvdata(dev); 827 828 return hid_hw_open(hid); 829 } 830 831 static void hidinput_close(struct input_dev *dev) 832 { 833 struct hid_device *hid = input_get_drvdata(dev); 834 835 hid_hw_close(hid); 836 } 837 838 /* 839 * Register the input device; print a message. 840 * Configure the input layer interface 841 * Read all reports and initialize the absolute field values. 842 */ 843 844 int hidinput_connect(struct hid_device *hid, unsigned int force) 845 { 846 struct hid_report *report; 847 struct hid_input *hidinput = NULL; 848 struct input_dev *input_dev; 849 int i, j, k; 850 851 INIT_LIST_HEAD(&hid->inputs); 852 853 if (!force) { 854 for (i = 0; i < hid->maxcollection; i++) { 855 struct hid_collection *col = &hid->collection[i]; 856 if (col->type == HID_COLLECTION_APPLICATION || 857 col->type == HID_COLLECTION_PHYSICAL) 858 if (IS_INPUT_APPLICATION(col->usage)) 859 break; 860 } 861 862 if (i == hid->maxcollection) 863 return -1; 864 } 865 866 for (k = HID_INPUT_REPORT; k <= HID_FEATURE_REPORT; k++) { 867 if (k == HID_OUTPUT_REPORT && 868 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) 869 continue; 870 871 list_for_each_entry(report, &hid->report_enum[k].report_list, list) { 872 873 if (!report->maxfield) 874 continue; 875 876 if (!hidinput) { 877 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); 878 input_dev = input_allocate_device(); 879 if (!hidinput || !input_dev) { 880 kfree(hidinput); 881 input_free_device(input_dev); 882 hid_err(hid, "Out of memory during hid input probe\n"); 883 goto out_unwind; 884 } 885 886 input_set_drvdata(input_dev, hid); 887 input_dev->event = 888 hid->ll_driver->hidinput_input_event; 889 input_dev->open = hidinput_open; 890 input_dev->close = hidinput_close; 891 input_dev->setkeycode_new = hidinput_setkeycode; 892 input_dev->getkeycode_new = hidinput_getkeycode; 893 894 input_dev->name = hid->name; 895 input_dev->phys = hid->phys; 896 input_dev->uniq = hid->uniq; 897 input_dev->id.bustype = hid->bus; 898 input_dev->id.vendor = hid->vendor; 899 input_dev->id.product = hid->product; 900 input_dev->id.version = hid->version; 901 input_dev->dev.parent = hid->dev.parent; 902 hidinput->input = input_dev; 903 list_add_tail(&hidinput->list, &hid->inputs); 904 } 905 906 for (i = 0; i < report->maxfield; i++) 907 for (j = 0; j < report->field[i]->maxusage; j++) 908 hidinput_configure_usage(hidinput, report->field[i], 909 report->field[i]->usage + j); 910 911 if (hid->quirks & HID_QUIRK_MULTI_INPUT) { 912 /* This will leave hidinput NULL, so that it 913 * allocates another one if we have more inputs on 914 * the same interface. Some devices (e.g. Happ's 915 * UGCI) cram a lot of unrelated inputs into the 916 * same interface. */ 917 hidinput->report = report; 918 if (input_register_device(hidinput->input)) 919 goto out_cleanup; 920 hidinput = NULL; 921 } 922 } 923 } 924 925 if (hidinput && input_register_device(hidinput->input)) 926 goto out_cleanup; 927 928 return 0; 929 930 out_cleanup: 931 input_free_device(hidinput->input); 932 kfree(hidinput); 933 out_unwind: 934 /* unwind the ones we already registered */ 935 hidinput_disconnect(hid); 936 937 return -1; 938 } 939 EXPORT_SYMBOL_GPL(hidinput_connect); 940 941 void hidinput_disconnect(struct hid_device *hid) 942 { 943 struct hid_input *hidinput, *next; 944 945 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { 946 list_del(&hidinput->list); 947 input_unregister_device(hidinput->input); 948 kfree(hidinput); 949 } 950 } 951 EXPORT_SYMBOL_GPL(hidinput_disconnect); 952 953