Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 | /* * (Tentative) USB Audio Driver for ALSA * * Mixer control part * * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> * * Many codes borrowed from audio.c by * Alan Cox (alan@lxorguk.ukuu.org.uk) * Thomas Sailer (sailer@ife.ee.ethz.ch) * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include <sound/driver.h> #include <linux/bitops.h> #include <linux/init.h> #include <linux/list.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/usb.h> #include <sound/core.h> #include <sound/control.h> #include <sound/hwdep.h> #include <sound/info.h> #include <sound/tlv.h> #include "usbaudio.h" /* */ /* ignore error from controls - for debugging */ /* #define IGNORE_CTL_ERROR */ /* * Sound Blaster remote control configuration * * format of remote control data: * Extigy: xx 00 * Audigy 2 NX: 06 80 xx 00 00 00 * Live! 24-bit: 06 80 xx yy 22 83 */ static const struct rc_config { u32 usb_id; u8 offset; u8 length; u8 packet_length; u8 mute_mixer_id; u32 mute_code; } rc_configs[] = { { USB_ID(0x041e, 0x3000), 0, 1, 2, 18, 0x0013 }, /* Extigy */ { USB_ID(0x041e, 0x3020), 2, 1, 6, 18, 0x0013 }, /* Audigy 2 NX */ { USB_ID(0x041e, 0x3040), 2, 2, 6, 2, 0x6e91 }, /* Live! 24-bit */ }; struct usb_mixer_interface { struct snd_usb_audio *chip; unsigned int ctrlif; struct list_head list; unsigned int ignore_ctl_error; struct urb *urb; struct usb_mixer_elem_info **id_elems; /* array[256], indexed by unit id */ /* Sound Blaster remote control stuff */ const struct rc_config *rc_cfg; unsigned long rc_hwdep_open; u32 rc_code; wait_queue_head_t rc_waitq; struct urb *rc_urb; struct usb_ctrlrequest *rc_setup_packet; u8 rc_buffer[6]; u8 audigy2nx_leds[3]; }; struct usb_audio_term { int id; int type; int channels; unsigned int chconfig; int name; }; struct usbmix_name_map; struct mixer_build { struct snd_usb_audio *chip; struct usb_mixer_interface *mixer; unsigned char *buffer; unsigned int buflen; DECLARE_BITMAP(unitbitmap, 256); struct usb_audio_term oterm; const struct usbmix_name_map *map; const struct usbmix_selector_map *selector_map; }; struct usb_mixer_elem_info { struct usb_mixer_interface *mixer; struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */ struct snd_ctl_elem_id *elem_id; unsigned int id; unsigned int control; /* CS or ICN (high byte) */ unsigned int cmask; /* channel mask bitmap: 0 = master */ int channels; int val_type; int min, max, res; u8 initialized; }; enum { USB_FEATURE_NONE = 0, USB_FEATURE_MUTE = 1, USB_FEATURE_VOLUME, USB_FEATURE_BASS, USB_FEATURE_MID, USB_FEATURE_TREBLE, USB_FEATURE_GEQ, USB_FEATURE_AGC, USB_FEATURE_DELAY, USB_FEATURE_BASSBOOST, USB_FEATURE_LOUDNESS }; enum { USB_MIXER_BOOLEAN, USB_MIXER_INV_BOOLEAN, USB_MIXER_S8, USB_MIXER_U8, USB_MIXER_S16, USB_MIXER_U16, }; enum { USB_PROC_UPDOWN = 1, USB_PROC_UPDOWN_SWITCH = 1, USB_PROC_UPDOWN_MODE_SEL = 2, USB_PROC_PROLOGIC = 2, USB_PROC_PROLOGIC_SWITCH = 1, USB_PROC_PROLOGIC_MODE_SEL = 2, USB_PROC_3DENH = 3, USB_PROC_3DENH_SWITCH = 1, USB_PROC_3DENH_SPACE = 2, USB_PROC_REVERB = 4, USB_PROC_REVERB_SWITCH = 1, USB_PROC_REVERB_LEVEL = 2, USB_PROC_REVERB_TIME = 3, USB_PROC_REVERB_DELAY = 4, USB_PROC_CHORUS = 5, USB_PROC_CHORUS_SWITCH = 1, USB_PROC_CHORUS_LEVEL = 2, USB_PROC_CHORUS_RATE = 3, USB_PROC_CHORUS_DEPTH = 4, USB_PROC_DCR = 6, USB_PROC_DCR_SWITCH = 1, USB_PROC_DCR_RATIO = 2, USB_PROC_DCR_MAX_AMP = 3, USB_PROC_DCR_THRESHOLD = 4, USB_PROC_DCR_ATTACK = 5, USB_PROC_DCR_RELEASE = 6, }; #define MAX_CHANNELS 10 /* max logical channels */ /* * manual mapping of mixer names * if the mixer topology is too complicated and the parsed names are * ambiguous, add the entries in usbmixer_maps.c. */ #include "usbmixer_maps.c" /* get the mapped name if the unit matches */ static int check_mapped_name(struct mixer_build *state, int unitid, int control, char *buf, int buflen) { const struct usbmix_name_map *p; if (! state->map) return 0; for (p = state->map; p->id; p++) { if (p->id == unitid && p->name && (! control || ! p->control || control == p->control)) { buflen--; return strlcpy(buf, p->name, buflen); } } return 0; } /* check whether the control should be ignored */ static int check_ignored_ctl(struct mixer_build *state, int unitid, int control) { const struct usbmix_name_map *p; if (! state->map) return 0; for (p = state->map; p->id; p++) { if (p->id == unitid && ! p->name && (! control || ! p->control || control == p->control)) { // printk("ignored control %d:%d\n", unitid, control); return 1; } } return 0; } /* get the mapped selector source name */ static int check_mapped_selector_name(struct mixer_build *state, int unitid, int index, char *buf, int buflen) { const struct usbmix_selector_map *p; if (! state->selector_map) return 0; for (p = state->selector_map; p->id; p++) { if (p->id == unitid && index < p->count) return strlcpy(buf, p->names[index], buflen); } return 0; } /* * find an audio control unit with the given unit id */ static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit) { unsigned char *p; p = NULL; while ((p = snd_usb_find_desc(state->buffer, state->buflen, p, USB_DT_CS_INTERFACE)) != NULL) { if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit) return p; } return NULL; } /* * copy a string with the given id */ static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen) { int len = usb_string(state->chip->dev, index, buf, maxlen - 1); buf[len] = 0; return len; } /* * convert from the byte/word on usb descriptor to the zero-based integer */ static int convert_signed_value(struct usb_mixer_elem_info *cval, int val) { switch (cval->val_type) { case USB_MIXER_BOOLEAN: return !!val; case USB_MIXER_INV_BOOLEAN: return !val; case USB_MIXER_U8: val &= 0xff; break; case USB_MIXER_S8: val &= 0xff; if (val >= 0x80) val -= 0x100; break; case USB_MIXER_U16: val &= 0xffff; break; case USB_MIXER_S16: val &= 0xffff; if (val >= 0x8000) val -= 0x10000; break; } return val; } /* * convert from the zero-based int to the byte/word for usb descriptor */ static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val) { switch (cval->val_type) { case USB_MIXER_BOOLEAN: return !!val; case USB_MIXER_INV_BOOLEAN: return !val; case USB_MIXER_S8: case USB_MIXER_U8: return val & 0xff; case USB_MIXER_S16: case USB_MIXER_U16: return val & 0xffff; } return 0; /* not reached */ } static int get_relative_value(struct usb_mixer_elem_info *cval, int val) { if (! cval->res) cval->res = 1; if (val < cval->min) return 0; else if (val >= cval->max) return (cval->max - cval->min + cval->res - 1) / cval->res; else return (val - cval->min) / cval->res; } static int get_abs_value(struct usb_mixer_elem_info *cval, int val) { if (val < 0) return cval->min; if (! cval->res) cval->res = 1; val *= cval->res; val += cval->min; if (val > cval->max) return cval->max; return val; } /* * retrieve a mixer value */ static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) { unsigned char buf[2]; int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; int timeout = 10; while (timeout-- > 0) { if (snd_usb_ctl_msg(cval->mixer->chip->dev, usb_rcvctrlpipe(cval->mixer->chip->dev, 0), request, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, validx, cval->mixer->ctrlif | (cval->id << 8), buf, val_len, 100) >= 0) { *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len)); return 0; } } snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type); return -EINVAL; } static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value) { return get_ctl_value(cval, GET_CUR, validx, value); } /* channel = 0: master, 1 = first channel */ static inline int get_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, int *value) { return get_ctl_value(cval, GET_CUR, (cval->control << 8) | channel, value); } /* * set a mixer value */ static int set_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int value_set) { unsigned char buf[2]; int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; int timeout = 10; value_set = convert_bytes_value(cval, value_set); buf[0] = value_set & 0xff; buf[1] = (value_set >> 8) & 0xff; while (timeout -- > 0) if (snd_usb_ctl_msg(cval->mixer->chip->dev, usb_sndctrlpipe(cval->mixer->chip->dev, 0), request, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, validx, cval->mixer->ctrlif | (cval->id << 8), buf, val_len, 100) >= 0) return 0; snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n", request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]); return -EINVAL; } static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value) { return set_ctl_value(cval, SET_CUR, validx, value); } static inline int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, int value) { return set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel, value); } /* * TLV callback for mixer volume controls */ static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, unsigned int size, unsigned int __user *_tlv) { struct usb_mixer_elem_info *cval = kcontrol->private_data; DECLARE_TLV_DB_SCALE(scale, 0, 0, 0); if (size < sizeof(scale)) return -ENOMEM; /* USB descriptions contain the dB scale in 1/256 dB unit * while ALSA TLV contains in 1/100 dB unit */ scale[2] = (convert_signed_value(cval, cval->min) * 100) / 256; scale[3] = (convert_signed_value(cval, cval->res) * 100) / 256; if (copy_to_user(_tlv, scale, sizeof(scale))) return -EFAULT; return 0; } /* * parser routines begin here... */ static int parse_audio_unit(struct mixer_build *state, int unitid); /* * check if the input/output channel routing is enabled on the given bitmap. * used for mixer unit parser */ static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs) { int idx = ich * num_outs + och; return bmap[idx >> 3] & (0x80 >> (idx & 7)); } /* * add an alsa control element * search and increment the index until an empty slot is found. * * if failed, give up and free the control instance. */ static int add_control_to_empty(struct mixer_build *state, struct snd_kcontrol *kctl) { struct usb_mixer_elem_info *cval = kctl->private_data; int err; while (snd_ctl_find_id(state->chip->card, &kctl->id)) kctl->id.index++; if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) { snd_printd(KERN_ERR "cannot add control (err = %d)\n", err); return err; } cval->elem_id = &kctl->id; cval->next_id_elem = state->mixer->id_elems[cval->id]; state->mixer->id_elems[cval->id] = cval; return 0; } /* * get a terminal name string */ static struct iterm_name_combo { int type; char *name; } iterm_names[] = { { 0x0300, "Output" }, { 0x0301, "Speaker" }, { 0x0302, "Headphone" }, { 0x0303, "HMD Audio" }, { 0x0304, "Desktop Speaker" }, { 0x0305, "Room Speaker" }, { 0x0306, "Com Speaker" }, { 0x0307, "LFE" }, { 0x0600, "External In" }, { 0x0601, "Analog In" }, { 0x0602, "Digital In" }, { 0x0603, "Line" }, { 0x0604, "Legacy In" }, { 0x0605, "IEC958 In" }, { 0x0606, "1394 DA Stream" }, { 0x0607, "1394 DV Stream" }, { 0x0700, "Embedded" }, { 0x0701, "Noise Source" }, { 0x0702, "Equalization Noise" }, { 0x0703, "CD" }, { 0x0704, "DAT" }, { 0x0705, "DCC" }, { 0x0706, "MiniDisk" }, { 0x0707, "Analog Tape" }, { 0x0708, "Phonograph" }, { 0x0709, "VCR Audio" }, { 0x070a, "Video Disk Audio" }, { 0x070b, "DVD Audio" }, { 0x070c, "TV Tuner Audio" }, { 0x070d, "Satellite Rec Audio" }, { 0x070e, "Cable Tuner Audio" }, { 0x070f, "DSS Audio" }, { 0x0710, "Radio Receiver" }, { 0x0711, "Radio Transmitter" }, { 0x0712, "Multi-Track Recorder" }, { 0x0713, "Synthesizer" }, { 0 }, }; static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm, unsigned char *name, int maxlen, int term_only) { struct iterm_name_combo *names; if (iterm->name) return snd_usb_copy_string_desc(state, iterm->name, name, maxlen); /* virtual type - not a real terminal */ if (iterm->type >> 16) { if (term_only) return 0; switch (iterm->type >> 16) { case SELECTOR_UNIT: strcpy(name, "Selector"); return 8; case PROCESSING_UNIT: strcpy(name, "Process Unit"); return 12; case EXTENSION_UNIT: strcpy(name, "Ext Unit"); return 8; case MIXER_UNIT: strcpy(name, "Mixer"); return 5; default: return sprintf(name, "Unit %d", iterm->id); } } switch (iterm->type & 0xff00) { case 0x0100: strcpy(name, "PCM"); return 3; case 0x0200: strcpy(name, "Mic"); return 3; case 0x0400: strcpy(name, "Headset"); return 7; case 0x0500: strcpy(name, "Phone"); return 5; } for (names = iterm_names; names->type; names++) if (names->type == iterm->type) { strcpy(name, names->name); return strlen(names->name); } return 0; } /* * parse the source unit recursively until it reaches to a terminal * or a branched unit. */ static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term) { unsigned char *p1; memset(term, 0, sizeof(*term)); while ((p1 = find_audio_control_unit(state, id)) != NULL) { term->id = id; switch (p1[2]) { case INPUT_TERMINAL: term->type = combine_word(p1 + 4); term->channels = p1[7]; term->chconfig = combine_word(p1 + 8); term->name = p1[11]; return 0; case FEATURE_UNIT: id = p1[4]; break; /* continue to parse */ case MIXER_UNIT: term->type = p1[2] << 16; /* virtual type */ term->channels = p1[5 + p1[4]]; term->chconfig = combine_word(p1 + 6 + p1[4]); term->name = p1[p1[0] - 1]; return 0; case SELECTOR_UNIT: /* call recursively to retrieve the channel info */ if (check_input_term(state, p1[5], term) < 0) return -ENODEV; term->type = p1[2] << 16; /* virtual type */ term->id = id; term->name = p1[9 + p1[0] - 1]; return 0; case PROCESSING_UNIT: case EXTENSION_UNIT: if (p1[6] == 1) { id = p1[7]; break; /* continue to parse */ } term->type = p1[2] << 16; /* virtual type */ term->channels = p1[7 + p1[6]]; term->chconfig = combine_word(p1 + 8 + p1[6]); term->name = p1[12 + p1[6] + p1[11 + p1[6]]]; return 0; default: return -ENODEV; } } return -ENODEV; } /* * Feature Unit */ /* feature unit control information */ struct usb_feature_control_info { const char *name; unsigned int type; /* control type (mute, volume, etc.) */ }; static struct usb_feature_control_info audio_feature_info[] = { { "Mute", USB_MIXER_INV_BOOLEAN }, { "Volume", USB_MIXER_S16 }, { "Tone Control - Bass", USB_MIXER_S8 }, { "Tone Control - Mid", USB_MIXER_S8 }, { "Tone Control - Treble", USB_MIXER_S8 }, { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */ { "Auto Gain Control", USB_MIXER_BOOLEAN }, { "Delay Control", USB_MIXER_U16 }, { "Bass Boost", USB_MIXER_BOOLEAN }, { "Loudness", USB_MIXER_BOOLEAN }, }; /* private_free callback */ static void usb_mixer_elem_free(struct snd_kcontrol *kctl) { kfree(kctl->private_data); kctl->private_data = NULL; } /* * interface to ALSA control for feature/mixer units */ /* * retrieve the minimum and maximum values for the specified control */ static int get_min_max(struct usb_mixer_elem_info *cval, int default_min) { /* for failsafe */ cval->min = default_min; cval->max = cval->min + 1; cval->res = 1; if (cval->val_type == USB_MIXER_BOOLEAN || cval->val_type == USB_MIXER_INV_BOOLEAN) { cval->initialized = 1; } else { int minchn = 0; if (cval->cmask) { int i; for (i = 0; i < MAX_CHANNELS; i++) if (cval->cmask & (1 << i)) { minchn = i + 1; break; } } if (get_ctl_value(cval, GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 || get_ctl_value(cval, GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) { snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n", cval->id, cval->mixer->ctrlif, cval->control, cval->id); return -EINVAL; } if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) { cval->res = 1; } else { int last_valid_res = cval->res; while (cval->res > 1) { if (set_ctl_value(cval, SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0) break; cval->res /= 2; } if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) cval->res = last_valid_res; } if (cval->res == 0) cval->res = 1; /* Additional checks for the proper resolution * * Some devices report smaller resolutions than actually * reacting. They don't return errors but simply clip * to the lower aligned value. */ if (cval->min + cval->res < cval->max) { int last_valid_res = cval->res; int saved, test, check; get_cur_mix_value(cval, minchn, &saved); for (;;) { test = saved; if (test < cval->max) test += cval->res; else test -= cval->res; if (test < cval->min || test > cval->max || set_cur_mix_value(cval, minchn, test) || get_cur_mix_value(cval, minchn, &check)) { cval->res = last_valid_res; break; } if (test == check) break; cval->res *= 2; } set_cur_mix_value(cval, minchn, saved); } cval->initialized = 1; } return 0; } /* get a feature/mixer unit info */ static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct usb_mixer_elem_info *cval = kcontrol->private_data; if (cval->val_type == USB_MIXER_BOOLEAN || cval->val_type == USB_MIXER_INV_BOOLEAN) uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; else uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = cval->channels; if (cval->val_type == USB_MIXER_BOOLEAN || cval->val_type == USB_MIXER_INV_BOOLEAN) { uinfo->value.integer.min = 0; uinfo->value.integer.max = 1; } else { if (! cval->initialized) get_min_max(cval, 0); uinfo->value.integer.min = 0; uinfo->value.integer.max = (cval->max - cval->min + cval->res - 1) / cval->res; } return 0; } /* get the current value from feature/mixer unit */ static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct usb_mixer_elem_info *cval = kcontrol->private_data; int c, cnt, val, err; if (cval->cmask) { cnt = 0; for (c = 0; c < MAX_CHANNELS; c++) { if (cval->cmask & (1 << c)) { err = get_cur_mix_value(cval, c + 1, &val); if (err < 0) { if (cval->mixer->ignore_ctl_error) { ucontrol->value.integer.value[0] = cval->min; return 0; } snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n", cval->control, c + 1, err); return err; } val = get_relative_value(cval, val); ucontrol->value.integer.value[cnt] = val; cnt++; } } } else { /* master channel */ err = get_cur_mix_value(cval, 0, &val); if (err < 0) { if (cval->mixer->ignore_ctl_error) { ucontrol->value.integer.value[0] = cval->min; return 0; } snd_printd(KERN_ERR "cannot get current value for control %d master ch: err = %d\n", cval->control, err); return err; } val = get_relative_value(cval, val); ucontrol->value.integer.value[0] = val; } return 0; } /* put the current value to feature/mixer unit */ static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct usb_mixer_elem_info *cval = kcontrol->private_data; int c, cnt, val, oval, err; int changed = 0; if (cval->cmask) { cnt = 0; for (c = 0; c < MAX_CHANNELS; c++) { if (cval->cmask & (1 << c)) { err = get_cur_mix_value(cval, c + 1, &oval); if (err < 0) { if (cval->mixer->ignore_ctl_error) return 0; return err; } val = ucontrol->value.integer.value[cnt]; val = get_abs_value(cval, val); if (oval != val) { set_cur_mix_value(cval, c + 1, val); changed = 1; } get_cur_mix_value(cval, c + 1, &val); cnt++; } } } else { /* master channel */ err = get_cur_mix_value(cval, 0, &oval); if (err < 0 && cval->mixer->ignore_ctl_error) return 0; if (err < 0) return err; val = ucontrol->value.integer.value[0]; val = get_abs_value(cval, val); if (val != oval) { set_cur_mix_value(cval, 0, val); changed = 1; } } return changed; } static struct snd_kcontrol_new usb_feature_unit_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", /* will be filled later manually */ .info = mixer_ctl_feature_info, .get = mixer_ctl_feature_get, .put = mixer_ctl_feature_put, }; /* * build a feature control */ static void build_feature_ctl(struct mixer_build *state, unsigned char *desc, unsigned int ctl_mask, int control, struct usb_audio_term *iterm, int unitid) { unsigned int len = 0; int mapped_name = 0; int nameid = desc[desc[0] - 1]; struct snd_kcontrol *kctl; struct usb_mixer_elem_info *cval; control++; /* change from zero-based to 1-based value */ if (control == USB_FEATURE_GEQ) { /* FIXME: not supported yet */ return; } if (check_ignored_ctl(state, unitid, control)) return; cval = kzalloc(sizeof(*cval), GFP_KERNEL); if (! cval) { snd_printk(KERN_ERR "cannot malloc kcontrol\n"); return; } cval->mixer = state->mixer; cval->id = unitid; cval->control = control; cval->cmask = ctl_mask; cval->val_type = audio_feature_info[control-1].type; if (ctl_mask == 0) cval->channels = 1; /* master channel */ else { int i, c = 0; for (i = 0; i < 16; i++) if (ctl_mask & (1 << i)) c++; cval->channels = c; } /* get min/max values */ get_min_max(cval, 0); kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); if (! kctl) { snd_printk(KERN_ERR "cannot malloc kcontrol\n"); kfree(cval); return; } kctl->private_free = usb_mixer_elem_free; len = check_mapped_name(state, unitid, control, kctl->id.name, sizeof(kctl->id.name)); mapped_name = len != 0; if (! len && nameid) len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); switch (control) { case USB_FEATURE_MUTE: case USB_FEATURE_VOLUME: /* determine the control name. the rule is: * - if a name id is given in descriptor, use it. * - if the connected input can be determined, then use the name * of terminal type. * - if the connected output can be determined, use it. * - otherwise, anonymous name. */ if (! len) { len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1); if (! len) len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1); if (! len) len = snprintf(kctl->id.name, sizeof(kctl->id.name), "Feature %d", unitid); } /* determine the stream direction: * if the connected output is USB stream, then it's likely a * capture stream. otherwise it should be playback (hopefully :) */ if (! mapped_name && ! (state->oterm.type >> 16)) { if ((state->oterm.type & 0xff00) == 0x0100) { len = strlcat(kctl->id.name, " Capture", sizeof(kctl->id.name)); } else { len = strlcat(kctl->id.name + len, " Playback", sizeof(kctl->id.name)); } } strlcat(kctl->id.name + len, control == USB_FEATURE_MUTE ? " Switch" : " Volume", sizeof(kctl->id.name)); if (control == USB_FEATURE_VOLUME) { kctl->tlv.c = mixer_vol_tlv; kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK; } break; default: if (! len) strlcpy(kctl->id.name, audio_feature_info[control-1].name, sizeof(kctl->id.name)); break; } /* quirk for UDA1321/N101 */ /* note that detection between firmware 2.1.1.7 (N101) and later 2.1.1.21 */ /* is not very clear from datasheets */ /* I hope that the min value is -15360 for newer firmware --jk */ switch (state->chip->usb_id) { case USB_ID(0x0471, 0x0101): case USB_ID(0x0471, 0x0104): case USB_ID(0x0471, 0x0105): case USB_ID(0x0672, 0x1041): if (!strcmp(kctl->id.name, "PCM Playback Volume") && cval->min == -15616) { snd_printk(KERN_INFO "using volume control quirk for the UDA1321/N101 chip\n"); cval->max = -256; } } snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n", cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res); add_control_to_empty(state, kctl); } /* * parse a feature unit * * most of controlls are defined here. */ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, unsigned char *ftr) { int channels, i, j; struct usb_audio_term iterm; unsigned int master_bits, first_ch_bits; int err, csize; if (ftr[0] < 7 || ! (csize = ftr[5]) || ftr[0] < 7 + csize) { snd_printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid); return -EINVAL; } /* parse the source unit */ if ((err = parse_audio_unit(state, ftr[4])) < 0) return err; /* determine the input source type and name */ if (check_input_term(state, ftr[4], &iterm) < 0) return -EINVAL; channels = (ftr[0] - 7) / csize - 1; master_bits = snd_usb_combine_bytes(ftr + 6, csize); if (channels > 0) first_ch_bits = snd_usb_combine_bytes(ftr + 6 + csize, csize); else first_ch_bits = 0; /* check all control types */ for (i = 0; i < 10; i++) { unsigned int ch_bits = 0; for (j = 0; j < channels; j++) { unsigned int mask = snd_usb_combine_bytes(ftr + 6 + csize * (j+1), csize); if (mask & (1 << i)) ch_bits |= (1 << j); } if (ch_bits & 1) /* the first channel must be set (for ease of programming) */ build_feature_ctl(state, ftr, ch_bits, i, &iterm, unitid); if (master_bits & (1 << i)) build_feature_ctl(state, ftr, 0, i, &iterm, unitid); } return 0; } /* * Mixer Unit */ /* * build a mixer unit control * * the callbacks are identical with feature unit. * input channel number (zero based) is given in control field instead. */ static void build_mixer_unit_ctl(struct mixer_build *state, unsigned char *desc, int in_pin, int in_ch, int unitid, struct usb_audio_term *iterm) { struct usb_mixer_elem_info *cval; unsigned int input_pins = desc[4]; unsigned int num_outs = desc[5 + input_pins]; unsigned int i, len; struct snd_kcontrol *kctl; if (check_ignored_ctl(state, unitid, 0)) return; cval = kzalloc(sizeof(*cval), GFP_KERNEL); if (! cval) return; cval->mixer = state->mixer; cval->id = unitid; cval->control = in_ch + 1; /* based on 1 */ cval->val_type = USB_MIXER_S16; for (i = 0; i < num_outs; i++) { if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) { cval->cmask |= (1 << i); cval->channels++; } } /* get min/max values */ get_min_max(cval, 0); kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); if (! kctl) { snd_printk(KERN_ERR "cannot malloc kcontrol\n"); kfree(cval); return; } kctl->private_free = usb_mixer_elem_free; len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name)); if (! len) len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0); if (! len) len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1); strlcat(kctl->id.name + len, " Volume", sizeof(kctl->id.name)); snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n", cval->id, kctl->id.name, cval->channels, cval->min, cval->max); add_control_to_empty(state, kctl); } /* * parse a mixer unit */ static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, unsigned char *desc) { struct usb_audio_term iterm; int input_pins, num_ins, num_outs; int pin, ich, err; if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) { snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid); return -EINVAL; } /* no bmControls field (e.g. Maya44) -> ignore */ if (desc[0] <= 10 + input_pins) { snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid); return 0; } num_ins = 0; ich = 0; for (pin = 0; pin < input_pins; pin++) { err = parse_audio_unit(state, desc[5 + pin]); if (err < 0) return err; err = check_input_term(state, desc[5 + pin], &iterm); if (err < 0) return err; num_ins += iterm.channels; for (; ich < num_ins; ++ich) { int och, ich_has_controls = 0; for (och = 0; och < num_outs; ++och) { if (check_matrix_bitmap(desc + 9 + input_pins, ich, och, num_outs)) { ich_has_controls = 1; break; } } if (ich_has_controls) build_mixer_unit_ctl(state, desc, pin, ich, unitid, &iterm); } } return 0; } /* * Processing Unit / Extension Unit */ /* get callback for processing/extension unit */ static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct usb_mixer_elem_info *cval = kcontrol->private_data; int err, val; err = get_cur_ctl_value(cval, cval->control << 8, &val); if (err < 0 && cval->mixer->ignore_ctl_error) { ucontrol->value.integer.value[0] = cval->min; return 0; } if (err < 0) return err; val = get_relative_value(cval, val); ucontrol->value.integer.value[0] = val; return 0; } /* put callback for processing/extension unit */ static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct usb_mixer_elem_info *cval = kcontrol->private_data; int val, oval, err; err = get_cur_ctl_value(cval, cval->control << 8, &oval); if (err < 0) { if (cval->mixer->ignore_ctl_error) return 0; return err; } val = ucontrol->value.integer.value[0]; val = get_abs_value(cval, val); if (val != oval) { set_cur_ctl_value(cval, cval->control << 8, val); return 1; } return 0; } /* alsa control interface for processing/extension unit */ static struct snd_kcontrol_new mixer_procunit_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", /* will be filled later */ .info = mixer_ctl_feature_info, .get = mixer_ctl_procunit_get, .put = mixer_ctl_procunit_put, }; /* * predefined data for processing units */ struct procunit_value_info { int control; char *suffix; int val_type; int min_value; }; struct procunit_info { int type; char *name; struct procunit_value_info *values; }; static struct procunit_value_info updown_proc_info[] = { { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN }, { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 }, { 0 } }; static struct procunit_value_info prologic_proc_info[] = { { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN }, { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 }, { 0 } }; static struct procunit_value_info threed_enh_proc_info[] = { { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN }, { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 }, { 0 } }; static struct procunit_value_info reverb_proc_info[] = { { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN }, { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 }, { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 }, { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 }, { 0 } }; static struct procunit_value_info chorus_proc_info[] = { { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN }, { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 }, { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 }, { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 }, { 0 } }; static struct procunit_value_info dcr_proc_info[] = { { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN }, { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 }, { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 }, { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 }, { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 }, { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 }, { 0 } }; static struct procunit_info procunits[] = { { USB_PROC_UPDOWN, "Up Down", updown_proc_info }, { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info }, { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info }, { USB_PROC_REVERB, "Reverb", reverb_proc_info }, { USB_PROC_CHORUS, "Chorus", chorus_proc_info }, { USB_PROC_DCR, "DCR", dcr_proc_info }, { 0 }, }; /* * build a processing/extension unit */ static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name) { int num_ins = dsc[6]; struct usb_mixer_elem_info *cval; struct snd_kcontrol *kctl; int i, err, nameid, type, len; struct procunit_info *info; struct procunit_value_info *valinfo; static struct procunit_value_info default_value_info[] = { { 0x01, "Switch", USB_MIXER_BOOLEAN }, { 0 } }; static struct procunit_info default_info = { 0, NULL, default_value_info }; if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) { snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid); return -EINVAL; } for (i = 0; i < num_ins; i++) { if ((err = parse_audio_unit(state, dsc[7 + i])) < 0) return err; } type = combine_word(&dsc[4]); for (info = list; info && info->type; info++) if (info->type == type) break; if (! info || ! info->type) info = &default_info; for (valinfo = info->values; valinfo->control; valinfo++) { /* FIXME: bitmap might be longer than 8bit */ if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1)))) continue; if (check_ignored_ctl(state, unitid, valinfo->control)) continue; cval = kzalloc(sizeof(*cval), GFP_KERNEL); if (! cval) { snd_printk(KERN_ERR "cannot malloc kcontrol\n"); return -ENOMEM; } cval->mixer = state->mixer; cval->id = unitid; cval->control = valinfo->control; cval->val_type = valinfo->val_type; cval->channels = 1; /* get min/max values */ if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) { /* FIXME: hard-coded */ cval->min = 1; cval->max = dsc[15]; cval->res = 1; cval->initialized = 1; } else get_min_max(cval, valinfo->min_value); kctl = snd_ctl_new1(&mixer_procunit_ctl, cval); if (! kctl) { snd_printk(KERN_ERR "cannot malloc kcontrol\n"); kfree(cval); return -ENOMEM; } kctl->private_free = usb_mixer_elem_free; if (check_mapped_name(state, unitid, cval->control, kctl->id.name, sizeof(kctl->id.name))) ; else if (info->name) strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name)); else { nameid = dsc[12 + num_ins + dsc[11 + num_ins]]; len = 0; if (nameid) len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); if (! len) strlcpy(kctl->id.name, name, sizeof(kctl->id.name)); } strlcat(kctl->id.name, " ", sizeof(kctl->id.name)); strlcat(kctl->id.name, valinfo->suffix, sizeof(kctl->id.name)); snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n", cval->id, kctl->id.name, cval->channels, cval->min, cval->max); if ((err = add_control_to_empty(state, kctl)) < 0) return err; } return 0; } static int parse_audio_processing_unit(struct mixer_build *state, int unitid, unsigned char *desc) { return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit"); } static int parse_audio_extension_unit(struct mixer_build *state, int unitid, unsigned char *desc) { return build_audio_procunit(state, unitid, desc, NULL, "Extension Unit"); } /* * Selector Unit */ /* info callback for selector unit * use an enumerator type for routing */ static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { struct usb_mixer_elem_info *cval = kcontrol->private_data; char **itemlist = (char **)kcontrol->private_value; snd_assert(itemlist, return -EINVAL); uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; uinfo->count = 1; uinfo->value.enumerated.items = cval->max; if ((int)uinfo->value.enumerated.item >= cval->max) uinfo->value.enumerated.item = cval->max - 1; strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]); return 0; } /* get callback for selector unit */ static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct usb_mixer_elem_info *cval = kcontrol->private_data; int val, err; err = get_cur_ctl_value(cval, 0, &val); if (err < 0) { if (cval->mixer->ignore_ctl_error) { ucontrol->value.enumerated.item[0] = 0; return 0; } return err; } val = get_relative_value(cval, val); ucontrol->value.enumerated.item[0] = val; return 0; } /* put callback for selector unit */ static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct usb_mixer_elem_info *cval = kcontrol->private_data; int val, oval, err; err = get_cur_ctl_value(cval, 0, &oval); if (err < 0) { if (cval->mixer->ignore_ctl_error) return 0; return err; } val = ucontrol->value.enumerated.item[0]; val = get_abs_value(cval, val); if (val != oval) { set_cur_ctl_value(cval, 0, val); return 1; } return 0; } /* alsa control interface for selector unit */ static struct snd_kcontrol_new mixer_selectunit_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", /* will be filled later */ .info = mixer_ctl_selector_info, .get = mixer_ctl_selector_get, .put = mixer_ctl_selector_put, }; /* private free callback. * free both private_data and private_value */ static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl) { int i, num_ins = 0; if (kctl->private_data) { struct usb_mixer_elem_info *cval = kctl->private_data; num_ins = cval->max; kfree(cval); kctl->private_data = NULL; } if (kctl->private_value) { char **itemlist = (char **)kctl->private_value; for (i = 0; i < num_ins; i++) kfree(itemlist[i]); kfree(itemlist); kctl->private_value = 0; } } /* * parse a selector unit */ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsigned char *desc) { unsigned int num_ins = desc[4]; unsigned int i, nameid, len; int err; struct usb_mixer_elem_info *cval; struct snd_kcontrol *kctl; char **namelist; if (! num_ins || desc[0] < 6 + num_ins) { snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid); return -EINVAL; } for (i = 0; i < num_ins; i++) { if ((err = parse_audio_unit(state, desc[5 + i])) < 0) return err; } if (num_ins == 1) /* only one ? nonsense! */ return 0; if (check_ignored_ctl(state, unitid, 0)) return 0; cval = kzalloc(sizeof(*cval), GFP_KERNEL); if (! cval) { snd_printk(KERN_ERR "cannot malloc kcontrol\n"); return -ENOMEM; } cval->mixer = state->mixer; cval->id = unitid; cval->val_type = USB_MIXER_U8; cval->channels = 1; cval->min = 1; cval->max = num_ins; cval->res = 1; cval->initialized = 1; namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL); if (! namelist) { snd_printk(KERN_ERR "cannot malloc\n"); kfree(cval); return -ENOMEM; } #define MAX_ITEM_NAME_LEN 64 for (i = 0; i < num_ins; i++) { struct usb_audio_term iterm; len = 0; namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL); if (! namelist[i]) { snd_printk(KERN_ERR "cannot malloc\n"); while (--i > 0) kfree(namelist[i]); kfree(namelist); kfree(cval); return -ENOMEM; } len = check_mapped_selector_name(state, unitid, i, namelist[i], MAX_ITEM_NAME_LEN); if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0) len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0); if (! len) sprintf(namelist[i], "Input %d", i); } kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval); if (! kctl) { snd_printk(KERN_ERR "cannot malloc kcontrol\n"); kfree(namelist); kfree(cval); return -ENOMEM; } kctl->private_value = (unsigned long)namelist; kctl->private_free = usb_mixer_selector_elem_free; nameid = desc[desc[0] - 1]; len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name)); if (len) ; else if (nameid) snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); else { len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 0); if (! len) strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name)); if ((state->oterm.type & 0xff00) == 0x0100) strlcat(kctl->id.name, " Capture Source", sizeof(kctl->id.name)); else strlcat(kctl->id.name, " Playback Source", sizeof(kctl->id.name)); } snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n", cval->id, kctl->id.name, num_ins); if ((err = add_control_to_empty(state, kctl)) < 0) return err; return 0; } /* * parse an audio unit recursively */ static int parse_audio_unit(struct mixer_build *state, int unitid) { unsigned char *p1; if (test_and_set_bit(unitid, state->unitbitmap)) return 0; /* the unit already visited */ p1 = find_audio_control_unit(state, unitid); if (!p1) { snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid); return -EINVAL; } switch (p1[2]) { case INPUT_TERMINAL: return 0; /* NOP */ case MIXER_UNIT: return parse_audio_mixer_unit(state, unitid, p1); case SELECTOR_UNIT: return parse_audio_selector_unit(state, unitid, p1); case FEATURE_UNIT: return parse_audio_feature_unit(state, unitid, p1); case PROCESSING_UNIT: return parse_audio_processing_unit(state, unitid, p1); case EXTENSION_UNIT: return parse_audio_extension_unit(state, unitid, p1); default: snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]); return -EINVAL; } } static void snd_usb_mixer_free(struct usb_mixer_interface *mixer) { kfree(mixer->id_elems); if (mixer->urb) { kfree(mixer->urb->transfer_buffer); usb_free_urb(mixer->urb); } if (mixer->rc_urb) usb_free_urb(mixer->rc_urb); kfree(mixer->rc_setup_packet); kfree(mixer); } static int snd_usb_mixer_dev_free(struct snd_device *device) { struct usb_mixer_interface *mixer = device->device_data; snd_usb_mixer_free(mixer); return 0; } /* * create mixer controls * * walk through all OUTPUT_TERMINAL descriptors to search for mixers */ static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) { unsigned char *desc; struct mixer_build state; int err; const struct usbmix_ctl_map *map; struct usb_host_interface *hostif; hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0]; memset(&state, 0, sizeof(state)); state.chip = mixer->chip; state.mixer = mixer; state.buffer = hostif->extra; state.buflen = hostif->extralen; /* check the mapping table */ for (map = usbmix_ctl_maps; map->id; map++) { if (map->id == state.chip->usb_id) { state.map = map->map; state.selector_map = map->selector_map; mixer->ignore_ctl_error = map->ignore_ctl_error; break; } } desc = NULL; while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, OUTPUT_TERMINAL)) != NULL) { if (desc[0] < 9) continue; /* invalid descriptor? */ set_bit(desc[3], state.unitbitmap); /* mark terminal ID as visited */ state.oterm.id = desc[3]; state.oterm.type = combine_word(&desc[4]); state.oterm.name = desc[8]; err = parse_audio_unit(&state, desc[7]); if (err < 0) return err; } return 0; } static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid) { struct usb_mixer_elem_info *info; for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem) snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, info->elem_id); } static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer, int unitid) { if (!mixer->rc_cfg) return; /* unit ids specific to Extigy/Audigy 2 NX: */ switch (unitid) { case 0: /* remote control */ mixer->rc_urb->dev = mixer->chip->dev; usb_submit_urb(mixer->rc_urb, GFP_ATOMIC); break; case 4: /* digital in jack */ case 7: /* line in jacks */ case 19: /* speaker out jacks */ case 20: /* headphones out jack */ break; default: snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid); break; } } static void snd_usb_mixer_status_complete(struct urb *urb) { struct usb_mixer_interface *mixer = urb->context; if (urb->status == 0) { u8 *buf = urb->transfer_buffer; int i; for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) { snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n", buf[0], buf[1]); /* ignore any notifications not from the control interface */ if ((buf[0] & 0x0f) != 0) continue; if (!(buf[0] & 0x40)) snd_usb_mixer_notify_id(mixer, buf[1]); else snd_usb_mixer_memory_change(mixer, buf[1]); } } if (urb->status != -ENOENT && urb->status != -ECONNRESET) { urb->dev = mixer->chip->dev; usb_submit_urb(urb, GFP_ATOMIC); } } /* create the handler for the optional status interrupt endpoint */ static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer) { struct usb_host_interface *hostif; struct usb_endpoint_descriptor *ep; void *transfer_buffer; int buffer_length; unsigned int epnum; hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0]; /* we need one interrupt input endpoint */ if (get_iface_desc(hostif)->bNumEndpoints < 1) return 0; ep = get_endpoint(hostif, 0); if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN || (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) return 0; epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; buffer_length = le16_to_cpu(ep->wMaxPacketSize); transfer_buffer = kmalloc(buffer_length, GFP_KERNEL); if (!transfer_buffer) return -ENOMEM; mixer->urb = usb_alloc_urb(0, GFP_KERNEL); if (!mixer->urb) { kfree(transfer_buffer); return -ENOMEM; } usb_fill_int_urb(mixer->urb, mixer->chip->dev, usb_rcvintpipe(mixer->chip->dev, epnum), transfer_buffer, buffer_length, snd_usb_mixer_status_complete, mixer, ep->bInterval); usb_submit_urb(mixer->urb, GFP_KERNEL); return 0; } static void snd_usb_soundblaster_remote_complete(struct urb *urb) { struct usb_mixer_interface *mixer = urb->context; const struct rc_config *rc = mixer->rc_cfg; u32 code; if (urb->status < 0 || urb->actual_length < rc->packet_length) return; code = mixer->rc_buffer[rc->offset]; if (rc->length == 2) code |= mixer->rc_buffer[rc->offset + 1] << 8; /* the Mute button actually changes the mixer control */ if (code == rc->mute_code) snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id); mixer->rc_code = code; wmb(); wake_up(&mixer->rc_waitq); } static int snd_usb_sbrc_hwdep_open(struct snd_hwdep *hw, struct file *file) { struct usb_mixer_interface *mixer = hw->private_data; if (test_and_set_bit(0, &mixer->rc_hwdep_open)) return -EBUSY; return 0; } static int snd_usb_sbrc_hwdep_release(struct snd_hwdep *hw, struct file *file) { struct usb_mixer_interface *mixer = hw->private_data; clear_bit(0, &mixer->rc_hwdep_open); smp_mb__after_clear_bit(); return 0; } static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf, long count, loff_t *offset) { struct usb_mixer_interface *mixer = hw->private_data; int err; u32 rc_code; if (count != 1 && count != 4) return -EINVAL; err = wait_event_interruptible(mixer->rc_waitq, (rc_code = xchg(&mixer->rc_code, 0)) != 0); if (err == 0) { if (count == 1) err = put_user(rc_code, buf); else err = put_user(rc_code, (u32 __user *)buf); } return err < 0 ? err : count; } static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait) { struct usb_mixer_interface *mixer = hw->private_data; poll_wait(file, &mixer->rc_waitq, wait); return mixer->rc_code ? POLLIN | POLLRDNORM : 0; } static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer) { struct snd_hwdep *hwdep; int err, len, i; for (i = 0; i < ARRAY_SIZE(rc_configs); ++i) if (rc_configs[i].usb_id == mixer->chip->usb_id) break; if (i >= ARRAY_SIZE(rc_configs)) return 0; mixer->rc_cfg = &rc_configs[i]; len = mixer->rc_cfg->packet_length; init_waitqueue_head(&mixer->rc_waitq); err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep); if (err < 0) return err; snprintf(hwdep->name, sizeof(hwdep->name), "%s remote control", mixer->chip->card->shortname); hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC; hwdep->private_data = mixer; hwdep->ops.read = snd_usb_sbrc_hwdep_read; hwdep->ops.open = snd_usb_sbrc_hwdep_open; hwdep->ops.release = snd_usb_sbrc_hwdep_release; hwdep->ops.poll = snd_usb_sbrc_hwdep_poll; mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL); if (!mixer->rc_urb) return -ENOMEM; mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL); if (!mixer->rc_setup_packet) { usb_free_urb(mixer->rc_urb); mixer->rc_urb = NULL; return -ENOMEM; } mixer->rc_setup_packet->bRequestType = USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE; mixer->rc_setup_packet->bRequest = GET_MEM; mixer->rc_setup_packet->wValue = cpu_to_le16(0); mixer->rc_setup_packet->wIndex = cpu_to_le16(0); mixer->rc_setup_packet->wLength = cpu_to_le16(len); usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev, usb_rcvctrlpipe(mixer->chip->dev, 0), (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len, snd_usb_soundblaster_remote_complete, mixer); return 0; } static int snd_audigy2nx_led_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = 1; return 0; } static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol); int index = kcontrol->private_value; ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index]; return 0; } static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol); int index = kcontrol->private_value; int value = ucontrol->value.integer.value[0]; int err, changed; if (value > 1) return -EINVAL; changed = value != mixer->audigy2nx_leds[index]; err = snd_usb_ctl_msg(mixer->chip->dev, usb_sndctrlpipe(mixer->chip->dev, 0), 0x24, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER, value, index + 2, NULL, 0, 100); if (err < 0) return err; mixer->audigy2nx_leds[index] = value; return changed; } static struct snd_kcontrol_new snd_audigy2nx_controls[] = { { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "CMSS LED Switch", .info = snd_audigy2nx_led_info, .get = snd_audigy2nx_led_get, .put = snd_audigy2nx_led_put, .private_value = 0, }, { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Power LED Switch", .info = snd_audigy2nx_led_info, .get = snd_audigy2nx_led_get, .put = snd_audigy2nx_led_put, .private_value = 1, }, { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Dolby Digital LED Switch", .info = snd_audigy2nx_led_info, .get = snd_audigy2nx_led_get, .put = snd_audigy2nx_led_put, .private_value = 2, }, }; static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer) { int i, err; for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) { err = snd_ctl_add(mixer->chip->card, snd_ctl_new1(&snd_audigy2nx_controls[i], mixer)); if (err < 0) return err; } mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */ return 0; } static void snd_audigy2nx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { static const struct { int unitid; const char *name; } jacks[] = { {4, "dig in "}, {7, "line in"}, {19, "spk out"}, {20, "hph out"}, }; struct usb_mixer_interface *mixer = entry->private_data; int i, err; u8 buf[3]; snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname); for (i = 0; i < ARRAY_SIZE(jacks); ++i) { snd_iprintf(buffer, "%s: ", jacks[i].name); err = snd_usb_ctl_msg(mixer->chip->dev, usb_rcvctrlpipe(mixer->chip->dev, 0), GET_MEM, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, jacks[i].unitid << 8, buf, 3, 100); if (err == 3 && buf[0] == 3) snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]); else snd_iprintf(buffer, "?\n"); } } int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif) { static struct snd_device_ops dev_ops = { .dev_free = snd_usb_mixer_dev_free }; struct usb_mixer_interface *mixer; int err; strcpy(chip->card->mixername, "USB Mixer"); mixer = kzalloc(sizeof(*mixer), GFP_KERNEL); if (!mixer) return -ENOMEM; mixer->chip = chip; mixer->ctrlif = ctrlif; #ifdef IGNORE_CTL_ERROR mixer->ignore_ctl_error = 1; #endif mixer->id_elems = kcalloc(256, sizeof(*mixer->id_elems), GFP_KERNEL); if (!mixer->id_elems) { kfree(mixer); return -ENOMEM; } if ((err = snd_usb_mixer_controls(mixer)) < 0 || (err = snd_usb_mixer_status_create(mixer)) < 0) goto _error; if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0) goto _error; if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020)) { struct snd_info_entry *entry; if ((err = snd_audigy2nx_controls_create(mixer)) < 0) goto _error; if (!snd_card_proc_new(chip->card, "audigy2nx", &entry)) snd_info_set_text_ops(entry, mixer, snd_audigy2nx_proc_read); } err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops); if (err < 0) goto _error; list_add(&mixer->list, &chip->mixer_list); return 0; _error: snd_usb_mixer_free(mixer); return err; } void snd_usb_mixer_disconnect(struct list_head *p) { struct usb_mixer_interface *mixer; mixer = list_entry(p, struct usb_mixer_interface, list); if (mixer->urb) usb_kill_urb(mixer->urb); if (mixer->rc_urb) usb_kill_urb(mixer->rc_urb); } |