summaryrefslogtreecommitdiff
path: root/sound/pci/hda/hda_codec.c
blob: 8c2a8174ece182a24f8a0ee2ae6535cb98b73a67 (plain)
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
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
/*
 * Universal Interface for Intel High Definition Audio Codec
 *
 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
 *
 *
 *  This driver 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 driver 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/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/moduleparam.h>
#include <linux/mutex.h>
#include <sound/core.h>
#include "hda_codec.h"
#include <sound/asoundef.h>
#include <sound/initval.h>
#include "hda_local.h"


MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
MODULE_DESCRIPTION("Universal interface for High Definition Audio Codec");
MODULE_LICENSE("GPL");


/*
 * vendor / preset table
 */

struct hda_vendor_id {
	unsigned int id;
	const char *name;
};

/* codec vendor labels */
static struct hda_vendor_id hda_vendor_ids[] = {
	{ 0x10ec, "Realtek" },
	{ 0x11d4, "Analog Devices" },
	{ 0x13f6, "C-Media" },
	{ 0x434d, "C-Media" },
	{ 0x8384, "SigmaTel" },
	{} /* terminator */
};

/* codec presets */
#include "hda_patch.h"


/**
 * snd_hda_codec_read - send a command and get the response
 * @codec: the HDA codec
 * @nid: NID to send the command
 * @direct: direct flag
 * @verb: the verb to send
 * @parm: the parameter for the verb
 *
 * Send a single command and read the corresponding response.
 *
 * Returns the obtained response value, or -1 for an error.
 */
unsigned int snd_hda_codec_read(struct hda_codec *codec, hda_nid_t nid, int direct,
				unsigned int verb, unsigned int parm)
{
	unsigned int res;
	mutex_lock(&codec->bus->cmd_mutex);
	if (! codec->bus->ops.command(codec, nid, direct, verb, parm))
		res = codec->bus->ops.get_response(codec);
	else
		res = (unsigned int)-1;
	mutex_unlock(&codec->bus->cmd_mutex);
	return res;
}

EXPORT_SYMBOL(snd_hda_codec_read);

/**
 * snd_hda_codec_write - send a single command without waiting for response
 * @codec: the HDA codec
 * @nid: NID to send the command
 * @direct: direct flag
 * @verb: the verb to send
 * @parm: the parameter for the verb
 *
 * Send a single command without waiting for response.
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_codec_write(struct hda_codec *codec, hda_nid_t nid, int direct,
			 unsigned int verb, unsigned int parm)
{
	int err;
	mutex_lock(&codec->bus->cmd_mutex);
	err = codec->bus->ops.command(codec, nid, direct, verb, parm);
	mutex_unlock(&codec->bus->cmd_mutex);
	return err;
}

EXPORT_SYMBOL(snd_hda_codec_write);

/**
 * snd_hda_sequence_write - sequence writes
 * @codec: the HDA codec
 * @seq: VERB array to send
 *
 * Send the commands sequentially from the given array.
 * The array must be terminated with NID=0.
 */
void snd_hda_sequence_write(struct hda_codec *codec, const struct hda_verb *seq)
{
	for (; seq->nid; seq++)
		snd_hda_codec_write(codec, seq->nid, 0, seq->verb, seq->param);
}

EXPORT_SYMBOL(snd_hda_sequence_write);

/**
 * snd_hda_get_sub_nodes - get the range of sub nodes
 * @codec: the HDA codec
 * @nid: NID to parse
 * @start_id: the pointer to store the start NID
 *
 * Parse the NID and store the start NID of its sub-nodes.
 * Returns the number of sub-nodes.
 */
int snd_hda_get_sub_nodes(struct hda_codec *codec, hda_nid_t nid, hda_nid_t *start_id)
{
	unsigned int parm;

	parm = snd_hda_param_read(codec, nid, AC_PAR_NODE_COUNT);
	*start_id = (parm >> 16) & 0x7fff;
	return (int)(parm & 0x7fff);
}

EXPORT_SYMBOL(snd_hda_get_sub_nodes);

/**
 * snd_hda_get_connections - get connection list
 * @codec: the HDA codec
 * @nid: NID to parse
 * @conn_list: connection list array
 * @max_conns: max. number of connections to store
 *
 * Parses the connection list of the given widget and stores the list
 * of NIDs.
 *
 * Returns the number of connections, or a negative error code.
 */
int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
			    hda_nid_t *conn_list, int max_conns)
{
	unsigned int parm;
	int i, conn_len, conns;
	unsigned int shift, num_elems, mask;
	hda_nid_t prev_nid;

	snd_assert(conn_list && max_conns > 0, return -EINVAL);

	parm = snd_hda_param_read(codec, nid, AC_PAR_CONNLIST_LEN);
	if (parm & AC_CLIST_LONG) {
		/* long form */
		shift = 16;
		num_elems = 2;
	} else {
		/* short form */
		shift = 8;
		num_elems = 4;
	}
	conn_len = parm & AC_CLIST_LENGTH;
	mask = (1 << (shift-1)) - 1;

	if (! conn_len)
		return 0; /* no connection */

	if (conn_len == 1) {
		/* single connection */
		parm = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONNECT_LIST, 0);
		conn_list[0] = parm & mask;
		return 1;
	}

	/* multi connection */
	conns = 0;
	prev_nid = 0;
	for (i = 0; i < conn_len; i++) {
		int range_val;
		hda_nid_t val, n;

		if (i % num_elems == 0)
			parm = snd_hda_codec_read(codec, nid, 0,
						  AC_VERB_GET_CONNECT_LIST, i);
		range_val = !! (parm & (1 << (shift-1))); /* ranges */
		val = parm & mask;
		parm >>= shift;
		if (range_val) {
			/* ranges between the previous and this one */
			if (! prev_nid || prev_nid >= val) {
				snd_printk(KERN_WARNING "hda_codec: invalid dep_range_val %x:%x\n", prev_nid, val);
				continue;
			}
			for (n = prev_nid + 1; n <= val; n++) {
				if (conns >= max_conns) {
					snd_printk(KERN_ERR "Too many connections\n");
					return -EINVAL;
				}
				conn_list[conns++] = n;
			}
		} else {
			if (conns >= max_conns) {
				snd_printk(KERN_ERR "Too many connections\n");
				return -EINVAL;
			}
			conn_list[conns++] = val;
		}
		prev_nid = val;
	}
	return conns;
}


/**
 * snd_hda_queue_unsol_event - add an unsolicited event to queue
 * @bus: the BUS
 * @res: unsolicited event (lower 32bit of RIRB entry)
 * @res_ex: codec addr and flags (upper 32bit or RIRB entry)
 *
 * Adds the given event to the queue.  The events are processed in
 * the workqueue asynchronously.  Call this function in the interrupt
 * hanlder when RIRB receives an unsolicited event.
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex)
{
	struct hda_bus_unsolicited *unsol;
	unsigned int wp;

	if ((unsol = bus->unsol) == NULL)
		return 0;

	wp = (unsol->wp + 1) % HDA_UNSOL_QUEUE_SIZE;
	unsol->wp = wp;

	wp <<= 1;
	unsol->queue[wp] = res;
	unsol->queue[wp + 1] = res_ex;

	queue_work(unsol->workq, &unsol->work);

	return 0;
}

EXPORT_SYMBOL(snd_hda_queue_unsol_event);

/*
 * process queueud unsolicited events
 */
static void process_unsol_events(void *data)
{
	struct hda_bus *bus = data;
	struct hda_bus_unsolicited *unsol = bus->unsol;
	struct hda_codec *codec;
	unsigned int rp, caddr, res;

	while (unsol->rp != unsol->wp) {
		rp = (unsol->rp + 1) % HDA_UNSOL_QUEUE_SIZE;
		unsol->rp = rp;
		rp <<= 1;
		res = unsol->queue[rp];
		caddr = unsol->queue[rp + 1];
		if (! (caddr & (1 << 4))) /* no unsolicited event? */
			continue;
		codec = bus->caddr_tbl[caddr & 0x0f];
		if (codec && codec->patch_ops.unsol_event)
			codec->patch_ops.unsol_event(codec, res);
	}
}

/*
 * initialize unsolicited queue
 */
static int init_unsol_queue(struct hda_bus *bus)
{
	struct hda_bus_unsolicited *unsol;

	if (bus->unsol) /* already initialized */
		return 0;

	unsol = kzalloc(sizeof(*unsol), GFP_KERNEL);
	if (! unsol) {
		snd_printk(KERN_ERR "hda_codec: can't allocate unsolicited queue\n");
		return -ENOMEM;
	}
	unsol->workq = create_singlethread_workqueue("hda_codec");
	if (! unsol->workq) {
		snd_printk(KERN_ERR "hda_codec: can't create workqueue\n");
		kfree(unsol);
		return -ENOMEM;
	}
	INIT_WORK(&unsol->work, process_unsol_events, bus);
	bus->unsol = unsol;
	return 0;
}

/*
 * destructor
 */
static void snd_hda_codec_free(struct hda_codec *codec);

static int snd_hda_bus_free(struct hda_bus *bus)
{
	struct list_head *p, *n;

	if (! bus)
		return 0;
	if (bus->unsol) {
		destroy_workqueue(bus->unsol->workq);
		kfree(bus->unsol);
	}
	list_for_each_safe(p, n, &bus->codec_list) {
		struct hda_codec *codec = list_entry(p, struct hda_codec, list);
		snd_hda_codec_free(codec);
	}
	if (bus->ops.private_free)
		bus->ops.private_free(bus);
	kfree(bus);
	return 0;
}

static int snd_hda_bus_dev_free(struct snd_device *device)
{
	struct hda_bus *bus = device->device_data;
	return snd_hda_bus_free(bus);
}

/**
 * snd_hda_bus_new - create a HDA bus
 * @card: the card entry
 * @temp: the template for hda_bus information
 * @busp: the pointer to store the created bus instance
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_bus_new(struct snd_card *card, const struct hda_bus_template *temp,
		    struct hda_bus **busp)
{
	struct hda_bus *bus;
	int err;
	static struct snd_device_ops dev_ops = {
		.dev_free = snd_hda_bus_dev_free,
	};

	snd_assert(temp, return -EINVAL);
	snd_assert(temp->ops.command && temp->ops.get_response, return -EINVAL);

	if (busp)
		*busp = NULL;

	bus = kzalloc(sizeof(*bus), GFP_KERNEL);
	if (bus == NULL) {
		snd_printk(KERN_ERR "can't allocate struct hda_bus\n");
		return -ENOMEM;
	}

	bus->card = card;
	bus->private_data = temp->private_data;
	bus->pci = temp->pci;
	bus->modelname = temp->modelname;
	bus->ops = temp->ops;

	mutex_init(&bus->cmd_mutex);
	INIT_LIST_HEAD(&bus->codec_list);

	if ((err = snd_device_new(card, SNDRV_DEV_BUS, bus, &dev_ops)) < 0) {
		snd_hda_bus_free(bus);
		return err;
	}
	if (busp)
		*busp = bus;
	return 0;
}

EXPORT_SYMBOL(snd_hda_bus_new);

/*
 * find a matching codec preset
 */
static const struct hda_codec_preset *find_codec_preset(struct hda_codec *codec)
{
	const struct hda_codec_preset **tbl, *preset;

	for (tbl = hda_preset_tables; *tbl; tbl++) {
		for (preset = *tbl; preset->id; preset++) {
			u32 mask = preset->mask;
			if (! mask)
				mask = ~0;
			if (preset->id == (codec->vendor_id & mask))
				return preset;
		}
	}
	return NULL;
}

/*
 * snd_hda_get_codec_name - store the codec name
 */
void snd_hda_get_codec_name(struct hda_codec *codec,
			    char *name, int namelen)
{
	const struct hda_vendor_id *c;
	const char *vendor = NULL;
	u16 vendor_id = codec->vendor_id >> 16;
	char tmp[16];

	for (c = hda_vendor_ids; c->id; c++) {
		if (c->id == vendor_id) {
			vendor = c->name;
			break;
		}
	}
	if (! vendor) {
		sprintf(tmp, "Generic %04x", vendor_id);
		vendor = tmp;
	}
	if (codec->preset && codec->preset->name)
		snprintf(name, namelen, "%s %s", vendor, codec->preset->name);
	else
		snprintf(name, namelen, "%s ID %x", vendor, codec->vendor_id & 0xffff);
}

/*
 * look for an AFG and MFG nodes
 */
static void setup_fg_nodes(struct hda_codec *codec)
{
	int i, total_nodes;
	hda_nid_t nid;

	total_nodes = snd_hda_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
	for (i = 0; i < total_nodes; i++, nid++) {
		switch((snd_hda_param_read(codec, nid, AC_PAR_FUNCTION_TYPE) & 0xff)) {
		case AC_GRP_AUDIO_FUNCTION:
			codec->afg = nid;
			break;
		case AC_GRP_MODEM_FUNCTION:
			codec->mfg = nid;
			break;
		default:
			break;
		}
	}
}

/*
 * read widget caps for each widget and store in cache
 */
static int read_widget_caps(struct hda_codec *codec, hda_nid_t fg_node)
{
	int i;
	hda_nid_t nid;

	codec->num_nodes = snd_hda_get_sub_nodes(codec, fg_node,
						 &codec->start_nid);
	codec->wcaps = kmalloc(codec->num_nodes * 4, GFP_KERNEL);
	if (! codec->wcaps)
		return -ENOMEM;
	nid = codec->start_nid;
	for (i = 0; i < codec->num_nodes; i++, nid++)
		codec->wcaps[i] = snd_hda_param_read(codec, nid,
						     AC_PAR_AUDIO_WIDGET_CAP);
	return 0;
}


/*
 * codec destructor
 */
static void snd_hda_codec_free(struct hda_codec *codec)
{
	if (! codec)
		return;
	list_del(&codec->list);
	codec->bus->caddr_tbl[codec->addr] = NULL;
	if (codec->patch_ops.free)
		codec->patch_ops.free(codec);
	kfree(codec->amp_info);
	kfree(codec->wcaps);
	kfree(codec);
}

static void init_amp_hash(struct hda_codec *codec);

/**
 * snd_hda_codec_new - create a HDA codec
 * @bus: the bus to assign
 * @codec_addr: the codec address
 * @codecp: the pointer to store the generated codec
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
		      struct hda_codec **codecp)
{
	struct hda_codec *codec;
	char component[13];
	int err;

	snd_assert(bus, return -EINVAL);
	snd_assert(codec_addr <= HDA_MAX_CODEC_ADDRESS, return -EINVAL);

	if (bus->caddr_tbl[codec_addr]) {
		snd_printk(KERN_ERR "hda_codec: address 0x%x is already occupied\n", codec_addr);
		return -EBUSY;
	}

	codec = kzalloc(sizeof(*codec), GFP_KERNEL);
	if (codec == NULL) {
		snd_printk(KERN_ERR "can't allocate struct hda_codec\n");
		return -ENOMEM;
	}

	codec->bus = bus;
	codec->addr = codec_addr;
	mutex_init(&codec->spdif_mutex);
	init_amp_hash(codec);

	list_add_tail(&codec->list, &bus->codec_list);
	bus->caddr_tbl[codec_addr] = codec;

	codec->vendor_id = snd_hda_param_read(codec, AC_NODE_ROOT, AC_PAR_VENDOR_ID);
	if (codec->vendor_id == -1)
		/* read again, hopefully the access method was corrected
		 * in the last read...
		 */
		codec->vendor_id = snd_hda_param_read(codec, AC_NODE_ROOT,
						      AC_PAR_VENDOR_ID);
	codec->subsystem_id = snd_hda_param_read(codec, AC_NODE_ROOT, AC_PAR_SUBSYSTEM_ID);
	codec->revision_id = snd_hda_param_read(codec, AC_NODE_ROOT, AC_PAR_REV_ID);

	setup_fg_nodes(codec);
	if (! codec->afg && ! codec->mfg) {
		snd_printdd("hda_codec: no AFG or MFG node found\n");
		snd_hda_codec_free(codec);
		return -ENODEV;
	}

	if (read_widget_caps(codec, codec->afg ? codec->afg : codec->mfg) < 0) {
		snd_printk(KERN_ERR "hda_codec: cannot malloc\n");
		snd_hda_codec_free(codec);
		return -ENOMEM;
	}

	if (! codec->subsystem_id) {
		hda_nid_t nid = codec->afg ? codec->afg : codec->mfg;
		codec->subsystem_id = snd_hda_codec_read(codec, nid, 0,
							 AC_VERB_GET_SUBSYSTEM_ID,
							 0);
	}

	codec->preset = find_codec_preset(codec);
	if (! *bus->card->mixername)
		snd_hda_get_codec_name(codec, bus->card->mixername,
				       sizeof(bus->card->mixername));

	if (codec->preset && codec->preset->patch)
		err = codec->preset->patch(codec);
	else
		err = snd_hda_parse_generic_codec(codec);
	if (err < 0) {
		snd_hda_codec_free(codec);
		return err;
	}

	if (codec->patch_ops.unsol_event)
		init_unsol_queue(bus);

	snd_hda_codec_proc_new(codec);

	sprintf(component, "HDA:%08x", codec->vendor_id);
	snd_component_add(codec->bus->card, component);

	if (codecp)
		*codecp = codec;
	return 0;
}

EXPORT_SYMBOL(snd_hda_codec_new);

/**
 * snd_hda_codec_setup_stream - set up the codec for streaming
 * @codec: the CODEC to set up
 * @nid: the NID to set up
 * @stream_tag: stream tag to pass, it's between 0x1 and 0xf.
 * @channel_id: channel id to pass, zero based.
 * @format: stream format.
 */
void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid, u32 stream_tag,
				int channel_id, int format)
{
	if (! nid)
		return;

	snd_printdd("hda_codec_setup_stream: NID=0x%x, stream=0x%x, channel=%d, format=0x%x\n",
		    nid, stream_tag, channel_id, format);
	snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID,
			    (stream_tag << 4) | channel_id);
	msleep(1);
	snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, format);
}

EXPORT_SYMBOL(snd_hda_codec_setup_stream);

/*
 * amp access functions
 */

/* FIXME: more better hash key? */
#define HDA_HASH_KEY(nid,dir,idx) (u32)((nid) + ((idx) << 16) + ((dir) << 24))
#define INFO_AMP_CAPS	(1<<0)
#define INFO_AMP_VOL(ch)	(1 << (1 + (ch)))

/* initialize the hash table */
static void init_amp_hash(struct hda_codec *codec)
{
	memset(codec->amp_hash, 0xff, sizeof(codec->amp_hash));
	codec->num_amp_entries = 0;
	codec->amp_info_size = 0;
	codec->amp_info = NULL;
}

/* query the hash.  allocate an entry if not found. */
static struct hda_amp_info *get_alloc_amp_hash(struct hda_codec *codec, u32 key)
{
	u16 idx = key % (u16)ARRAY_SIZE(codec->amp_hash);
	u16 cur = codec->amp_hash[idx];
	struct hda_amp_info *info;

	while (cur != 0xffff) {
		info = &codec->amp_info[cur];
		if (info->key == key)
			return info;
		cur = info->next;
	}

	/* add a new hash entry */
	if (codec->num_amp_entries >= codec->amp_info_size) {
		/* reallocate the array */
		int new_size = codec->amp_info_size + 64;
		struct hda_amp_info *new_info = kcalloc(new_size, sizeof(struct hda_amp_info),
							GFP_KERNEL);
		if (! new_info) {
			snd_printk(KERN_ERR "hda_codec: can't malloc amp_info\n");
			return NULL;
		}
		if (codec->amp_info) {
			memcpy(new_info, codec->amp_info,
			       codec->amp_info_size * sizeof(struct hda_amp_info));
			kfree(codec->amp_info);
		}
		codec->amp_info_size = new_size;
		codec->amp_info = new_info;
	}
	cur = codec->num_amp_entries++;
	info = &codec->amp_info[cur];
	info->key = key;
	info->status = 0; /* not initialized yet */
	info->next = codec->amp_hash[idx];
	codec->amp_hash[idx] = cur;

	return info;
}

/*
 * query AMP capabilities for the given widget and direction
 */
static u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)
{
	struct hda_amp_info *info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, 0));

	if (! info)
		return 0;
	if (! (info->status & INFO_AMP_CAPS)) {
		if (! (get_wcaps(codec, nid) & AC_WCAP_AMP_OVRD))
			nid = codec->afg;
		info->amp_caps = snd_hda_param_read(codec, nid, direction == HDA_OUTPUT ?
						    AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
		info->status |= INFO_AMP_CAPS;
	}
	return info->amp_caps;
}

/*
 * read the current volume to info
 * if the cache exists, read the cache value.
 */
static unsigned int get_vol_mute(struct hda_codec *codec, struct hda_amp_info *info,
			 hda_nid_t nid, int ch, int direction, int index)
{
	u32 val, parm;

	if (info->status & INFO_AMP_VOL(ch))
		return info->vol[ch];

	parm = ch ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT;
	parm |= direction == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT;
	parm |= index;
	val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_AMP_GAIN_MUTE, parm);
	info->vol[ch] = val & 0xff;
	info->status |= INFO_AMP_VOL(ch);
	return info->vol[ch];
}

/*
 * write the current volume in info to the h/w and update the cache
 */
static void put_vol_mute(struct hda_codec *codec, struct hda_amp_info *info,
			 hda_nid_t nid, int ch, int direction, int index, int val)
{
	u32 parm;

	parm = ch ? AC_AMP_SET_RIGHT : AC_AMP_SET_LEFT;
	parm |= direction == HDA_OUTPUT ? AC_AMP_SET_OUTPUT : AC_AMP_SET_INPUT;
	parm |= index << AC_AMP_SET_INDEX_SHIFT;
	parm |= val;
	snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, parm);
	info->vol[ch] = val;
}

/*
 * read AMP value.  The volume is between 0 to 0x7f, 0x80 = mute bit.
 */
int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch,
			   int direction, int index)
{
	struct hda_amp_info *info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, index));
	if (! info)
		return 0;
	return get_vol_mute(codec, info, nid, ch, direction, index);
}

/*
 * update the AMP value, mask = bit mask to set, val = the value
 */
int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch,
			     int direction, int idx, int mask, int val)
{
	struct hda_amp_info *info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, idx));

	if (! info)
		return 0;
	val &= mask;
	val |= get_vol_mute(codec, info, nid, ch, direction, idx) & ~mask;
	if (info->vol[ch] == val && ! codec->in_resume)
		return 0;
	put_vol_mute(codec, info, nid, ch, direction, idx, val);
	return 1;
}


/*
 * AMP control callbacks
 */
/* retrieve parameters from private_value */
#define get_amp_nid(kc)		((kc)->private_value & 0xffff)
#define get_amp_channels(kc)	(((kc)->private_value >> 16) & 0x3)
#define get_amp_direction(kc)	(((kc)->private_value >> 18) & 0x1)
#define get_amp_index(kc)	(((kc)->private_value >> 19) & 0xf)

/* volume */
int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	u16 nid = get_amp_nid(kcontrol);
	u8 chs = get_amp_channels(kcontrol);
	int dir = get_amp_direction(kcontrol);
	u32 caps;

	caps = query_amp_caps(codec, nid, dir);
	caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT; /* num steps */
	if (! caps) {
		printk(KERN_WARNING "hda_codec: num_steps = 0 for NID=0x%x\n", nid);
		return -EINVAL;
	}
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = chs == 3 ? 2 : 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = caps;
	return 0;
}

int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	hda_nid_t nid = get_amp_nid(kcontrol);
	int chs = get_amp_channels(kcontrol);
	int dir = get_amp_direction(kcontrol);
	int idx = get_amp_index(kcontrol);
	long *valp = ucontrol->value.integer.value;

	if (chs & 1)
		*valp++ = snd_hda_codec_amp_read(codec, nid, 0, dir, idx) & 0x7f;
	if (chs & 2)
		*valp = snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 0x7f;
	return 0;
}

int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	hda_nid_t nid = get_amp_nid(kcontrol);
	int chs = get_amp_channels(kcontrol);
	int dir = get_amp_direction(kcontrol);
	int idx = get_amp_index(kcontrol);
	long *valp = ucontrol->value.integer.value;
	int change = 0;

	if (chs & 1) {
		change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
						  0x7f, *valp);
		valp++;
	}
	if (chs & 2)
		change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
						   0x7f, *valp);
	return change;
}

/* switch */
int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	int chs = get_amp_channels(kcontrol);

	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = chs == 3 ? 2 : 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	hda_nid_t nid = get_amp_nid(kcontrol);
	int chs = get_amp_channels(kcontrol);
	int dir = get_amp_direction(kcontrol);
	int idx = get_amp_index(kcontrol);
	long *valp = ucontrol->value.integer.value;

	if (chs & 1)
		*valp++ = (snd_hda_codec_amp_read(codec, nid, 0, dir, idx) & 0x80) ? 0 : 1;
	if (chs & 2)
		*valp = (snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 0x80) ? 0 : 1;
	return 0;
}

int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	hda_nid_t nid = get_amp_nid(kcontrol);
	int chs = get_amp_channels(kcontrol);
	int dir = get_amp_direction(kcontrol);
	int idx = get_amp_index(kcontrol);
	long *valp = ucontrol->value.integer.value;
	int change = 0;

	if (chs & 1) {
		change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
						  0x80, *valp ? 0 : 0x80);
		valp++;
	}
	if (chs & 2)
		change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
						   0x80, *valp ? 0 : 0x80);
	
	return change;
}

/*
 * bound volume controls
 *
 * bind multiple volumes (# indices, from 0)
 */

#define AMP_VAL_IDX_SHIFT	19
#define AMP_VAL_IDX_MASK	(0x0f<<19)

int snd_hda_mixer_bind_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	unsigned long pval;
	int err;

	mutex_lock(&codec->spdif_mutex); /* reuse spdif_mutex */
	pval = kcontrol->private_value;
	kcontrol->private_value = pval & ~AMP_VAL_IDX_MASK; /* index 0 */
	err = snd_hda_mixer_amp_switch_get(kcontrol, ucontrol);
	kcontrol->private_value = pval;
	mutex_unlock(&codec->spdif_mutex);
	return err;
}

int snd_hda_mixer_bind_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	unsigned long pval;
	int i, indices, err = 0, change = 0;

	mutex_lock(&codec->spdif_mutex); /* reuse spdif_mutex */
	pval = kcontrol->private_value;
	indices = (pval & AMP_VAL_IDX_MASK) >> AMP_VAL_IDX_SHIFT;
	for (i = 0; i < indices; i++) {
		kcontrol->private_value = (pval & ~AMP_VAL_IDX_MASK) | (i << AMP_VAL_IDX_SHIFT);
		err = snd_hda_mixer_amp_switch_put(kcontrol, ucontrol);
		if (err < 0)
			break;
		change |= err;
	}
	kcontrol->private_value = pval;
	mutex_unlock(&codec->spdif_mutex);
	return err < 0 ? err : change;
}

/*
 * SPDIF out controls
 */

static int snd_hda_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
	uinfo->count = 1;
	return 0;
}

static int snd_hda_spdif_cmask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
					   IEC958_AES0_NONAUDIO |
					   IEC958_AES0_CON_EMPHASIS_5015 |
					   IEC958_AES0_CON_NOT_COPYRIGHT;
	ucontrol->value.iec958.status[1] = IEC958_AES1_CON_CATEGORY |
					   IEC958_AES1_CON_ORIGINAL;
	return 0;
}

static int snd_hda_spdif_pmask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
					   IEC958_AES0_NONAUDIO |
					   IEC958_AES0_PRO_EMPHASIS_5015;
	return 0;
}

static int snd_hda_spdif_default_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);

	ucontrol->value.iec958.status[0] = codec->spdif_status & 0xff;
	ucontrol->value.iec958.status[1] = (codec->spdif_status >> 8) & 0xff;
	ucontrol->value.iec958.status[2] = (codec->spdif_status >> 16) & 0xff;
	ucontrol->value.iec958.status[3] = (codec->spdif_status >> 24) & 0xff;

	return 0;
}

/* convert from SPDIF status bits to HDA SPDIF bits
 * bit 0 (DigEn) is always set zero (to be filled later)
 */
static unsigned short convert_from_spdif_status(unsigned int sbits)
{
	unsigned short val = 0;

	if (sbits & IEC958_AES0_PROFESSIONAL)
		val |= 1 << 6;
	if (sbits & IEC958_AES0_NONAUDIO)
		val |= 1 << 5;
	if (sbits & IEC958_AES0_PROFESSIONAL) {
		if ((sbits & IEC958_AES0_PRO_EMPHASIS) == IEC958_AES0_PRO_EMPHASIS_5015)
			val |= 1 << 3;
	} else {
		if ((sbits & IEC958_AES0_CON_EMPHASIS) == IEC958_AES0_CON_EMPHASIS_5015)
			val |= 1 << 3;
		if (! (sbits & IEC958_AES0_CON_NOT_COPYRIGHT))
			val |= 1 << 4;
		if (sbits & (IEC958_AES1_CON_ORIGINAL << 8))
			val |= 1 << 7;
		val |= sbits & (IEC958_AES1_CON_CATEGORY << 8);
	}
	return val;
}

/* convert to SPDIF status bits from HDA SPDIF bits
 */
static unsigned int convert_to_spdif_status(unsigned short val)
{
	unsigned int sbits = 0;

	if (val & (1 << 5))
		sbits |= IEC958_AES0_NONAUDIO;
	if (val & (1 << 6))
		sbits |= IEC958_AES0_PROFESSIONAL;
	if (sbits & IEC958_AES0_PROFESSIONAL) {
		if (sbits & (1 << 3))
			sbits |= IEC958_AES0_PRO_EMPHASIS_5015;
	} else {
		if (val & (1 << 3))
			sbits |= IEC958_AES0_CON_EMPHASIS_5015;
		if (! (val & (1 << 4)))
			sbits |= IEC958_AES0_CON_NOT_COPYRIGHT;
		if (val & (1 << 7))
			sbits |= (IEC958_AES1_CON_ORIGINAL << 8);
		sbits |= val & (0x7f << 8);
	}
	return sbits;
}

static int snd_hda_spdif_default_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	hda_nid_t nid = kcontrol->private_value;
	unsigned short val;
	int change;

	mutex_lock(&codec->spdif_mutex);
	codec->spdif_status = ucontrol->value.iec958.status[0] |
		((unsigned int)ucontrol->value.iec958.status[1] << 8) |
		((unsigned int)ucontrol->value.iec958.status[2] << 16) |
		((unsigned int)ucontrol->value.iec958.status[3] << 24);
	val = convert_from_spdif_status(codec->spdif_status);
	val |= codec->spdif_ctls & 1;
	change = codec->spdif_ctls != val;
	codec->spdif_ctls = val;

	if (change || codec->in_resume) {
		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1, val & 0xff);
		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_2, val >> 8);
	}

	mutex_unlock(&codec->spdif_mutex);
	return change;
}

static int snd_hda_spdif_out_switch_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_hda_spdif_out_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);

	ucontrol->value.integer.value[0] = codec->spdif_ctls & 1;
	return 0;
}

static int snd_hda_spdif_out_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	hda_nid_t nid = kcontrol->private_value;
	unsigned short val;
	int change;

	mutex_lock(&codec->spdif_mutex);
	val = codec->spdif_ctls & ~1;
	if (ucontrol->value.integer.value[0])
		val |= 1;
	change = codec->spdif_ctls != val;
	if (change || codec->in_resume) {
		codec->spdif_ctls = val;
		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1, val & 0xff);
		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE,
				    AC_AMP_SET_RIGHT | AC_AMP_SET_LEFT |
				    AC_AMP_SET_OUTPUT | ((val & 1) ? 0 : 0x80));
	}
	mutex_unlock(&codec->spdif_mutex);
	return change;
}

static struct snd_kcontrol_new dig_mixes[] = {
	{
		.access = SNDRV_CTL_ELEM_ACCESS_READ,
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
		.info = snd_hda_spdif_mask_info,
		.get = snd_hda_spdif_cmask_get,
	},
	{
		.access = SNDRV_CTL_ELEM_ACCESS_READ,
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
		.info = snd_hda_spdif_mask_info,
		.get = snd_hda_spdif_pmask_get,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
		.info = snd_hda_spdif_mask_info,
		.get = snd_hda_spdif_default_get,
		.put = snd_hda_spdif_default_put,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH),
		.info = snd_hda_spdif_out_switch_info,
		.get = snd_hda_spdif_out_switch_get,
		.put = snd_hda_spdif_out_switch_put,
	},
	{ } /* end */
};

/**
 * snd_hda_create_spdif_out_ctls - create Output SPDIF-related controls
 * @codec: the HDA codec
 * @nid: audio out widget NID
 *
 * Creates controls related with the SPDIF output.
 * Called from each patch supporting the SPDIF out.
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_create_spdif_out_ctls(struct hda_codec *codec, hda_nid_t nid)
{
	int err;
	struct snd_kcontrol *kctl;
	struct snd_kcontrol_new *dig_mix;

	for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
		kctl = snd_ctl_new1(dig_mix, codec);
		kctl->private_value = nid;
		if ((err = snd_ctl_add(codec->bus->card, kctl)) < 0)
			return err;
	}
	codec->spdif_ctls = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT, 0);
	codec->spdif_status = convert_to_spdif_status(codec->spdif_ctls);
	return 0;
}

/*
 * SPDIF input
 */

#define snd_hda_spdif_in_switch_info	snd_hda_spdif_out_switch_info

static int snd_hda_spdif_in_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);

	ucontrol->value.integer.value[0] = codec->spdif_in_enable;
	return 0;
}

static int snd_hda_spdif_in_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	hda_nid_t nid = kcontrol->private_value;
	unsigned int val = !!ucontrol->value.integer.value[0];
	int change;

	mutex_lock(&codec->spdif_mutex);
	change = codec->spdif_in_enable != val;
	if (change || codec->in_resume) {
		codec->spdif_in_enable = val;
		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1, val);
	}
	mutex_unlock(&codec->spdif_mutex);
	return change;
}

static int snd_hda_spdif_in_status_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	hda_nid_t nid = kcontrol->private_value;
	unsigned short val;
	unsigned int sbits;

	val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT, 0);
	sbits = convert_to_spdif_status(val);
	ucontrol->value.iec958.status[0] = sbits;
	ucontrol->value.iec958.status[1] = sbits >> 8;
	ucontrol->value.iec958.status[2] = sbits >> 16;
	ucontrol->value.iec958.status[3] = sbits >> 24;
	return 0;
}

static struct snd_kcontrol_new dig_in_ctls[] = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH),
		.info = snd_hda_spdif_in_switch_info,
		.get = snd_hda_spdif_in_switch_get,
		.put = snd_hda_spdif_in_switch_put,
	},
	{
		.access = SNDRV_CTL_ELEM_ACCESS_READ,
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
		.info = snd_hda_spdif_mask_info,
		.get = snd_hda_spdif_in_status_get,
	},
	{ } /* end */
};

/**
 * snd_hda_create_spdif_in_ctls - create Input SPDIF-related controls
 * @codec: the HDA codec
 * @nid: audio in widget NID
 *
 * Creates controls related with the SPDIF input.
 * Called from each patch supporting the SPDIF in.
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid)
{
	int err;
	struct snd_kcontrol *kctl;
	struct snd_kcontrol_new *dig_mix;

	for (dig_mix = dig_in_ctls; dig_mix->name; dig_mix++) {
		kctl = snd_ctl_new1(dig_mix, codec);
		kctl->private_value = nid;
		if ((err = snd_ctl_add(codec->bus->card, kctl)) < 0)
			return err;
	}
	codec->spdif_in_enable = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT, 0) & 1;
	return 0;
}


/*
 * set power state of the codec
 */
static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
				unsigned int power_state)
{
	hda_nid_t nid, nid_start;
	int nodes;

	snd_hda_codec_write(codec, fg, 0, AC_VERB_SET_POWER_STATE,
			    power_state);

	nodes = snd_hda_get_sub_nodes(codec, fg, &nid_start);
	for (nid = nid_start; nid < nodes + nid_start; nid++) {
		if (get_wcaps(codec, nid) & AC_WCAP_POWER)
			snd_hda_codec_write(codec, nid, 0,
					    AC_VERB_SET_POWER_STATE,
					    power_state);
	}

	if (power_state == AC_PWRST_D0)
		msleep(10);
}


/**
 * snd_hda_build_controls - build mixer controls
 * @bus: the BUS
 *
 * Creates mixer controls for each codec included in the bus.
 *
 * Returns 0 if successful, otherwise a negative error code.
 */
int snd_hda_build_controls(struct hda_bus *bus)
{
	struct list_head *p;

	/* build controls */
	list_for_each(p, &bus->codec_list) {
		struct hda_codec *codec = list_entry(p, struct hda_codec, list);
		int err;
		if (! codec->patch_ops.build_controls)
			continue;
		err = codec->patch_ops.build_controls(codec);
		if (err < 0)
			return err;
	}

	/* initialize */
	list_for_each(p, &bus->codec_list) {
		struct hda_codec *codec = list_entry(p, struct hda_codec, list);
		int err;
		hda_set_power_state(codec,
				    codec->afg ? codec->afg : codec->mfg,
				    AC_PWRST_D0);
		if (! codec->patch_ops.init)
			continue;
		err = codec->patch_ops.init(codec);
		if (err < 0)
			return err;
	}
	return 0;
}

EXPORT_SYMBOL(snd_hda_build_controls);

/*
 * stream formats
 */
struct hda_rate_tbl {
	unsigned int hz;
	unsigned int alsa_bits;
	unsigned int hda_fmt;
};

static struct hda_rate_tbl rate_bits[] = {
	/* rate in Hz, ALSA rate bitmask, HDA format value */

	/* autodetected value used in snd_hda_query_supported_pcm */
	{ 8000, SNDRV_PCM_RATE_8000, 0x0500 }, /* 1/6 x 48 */
	{ 11025, SNDRV_PCM_RATE_11025, 0x4300 }, /* 1/4 x 44 */
	{ 16000, SNDRV_PCM_RATE_16000, 0x0200 }, /* 1/3 x 48 */
	{ 22050, SNDRV_PCM_RATE_22050, 0x4100 }, /* 1/2 x 44 */
	{ 32000, SNDRV_PCM_RATE_32000, 0x0a00 }, /* 2/3 x 48 */
	{ 44100, SNDRV_PCM_RATE_44100, 0x4000 }, /* 44 */
	{ 48000, SNDRV_PCM_RATE_48000, 0x0000 }, /* 48 */
	{ 88200, SNDRV_PCM_RATE_88200, 0x4800 }, /* 2 x 44 */
	{ 96000, SNDRV_PCM_RATE_96000, 0x0800 }, /* 2 x 48 */
	{ 176400, SNDRV_PCM_RATE_176400, 0x5800 },/* 4 x 44 */
	{ 192000, SNDRV_PCM_RATE_192000, 0x1800 }, /* 4 x 48 */

	/* not autodetected value */
	{ 9600, SNDRV_PCM_RATE_KNOT, 0x0400 }, /* 1/5 x 48 */

	{ 0 } /* terminator */
};

/**
 * snd_hda_calc_stream_format - calculate format bitset
 * @rate: the sample rate
 * @channels: the number of channels
 * @format: the PCM format (SNDRV_PCM_FORMAT_XXX)
 * @maxbps: the max. bps
 *
 * Calculate the format bitset from the given rate, channels and th PCM format.
 *
 * Return zero if invalid.
 */
unsigned int snd_hda_calc_stream_format(unsigned int rate,
					unsigned int channels,
					unsigned int format,
					unsigned int maxbps)
{
	int i;
	unsigned int val = 0;

	for (i = 0; rate_bits[i].hz; i++)
		if (rate_bits[i].hz == rate) {
			val = rate_bits[i].hda_fmt;
			break;
		}
	if (! rate_bits[i].hz) {
		snd_printdd("invalid rate %d\n", rate);
		return 0;
	}

	if (channels == 0 || channels > 8) {
		snd_printdd("invalid channels %d\n", channels);
		return 0;
	}
	val |= channels - 1;

	switch (snd_pcm_format_width(format)) {
	case 8:  val |= 0x00; break;
	case 16: val |= 0x10; break;
	case 20:
	case 24:
	case 32:
		if (maxbps >= 32)
			val |= 0x40;
		else if (maxbps >= 24)
			val |= 0x30;
		else
			val |= 0x20;
		break;
	default:
		snd_printdd("invalid format width %d\n", snd_pcm_format_width(format));
		return 0;
	}

	return val;
}

EXPORT_SYMBOL(snd_hda_calc_stream_format);

/**
 * snd_hda_query_supported_pcm - query the supported PCM rates and formats
 * @codec: the HDA codec
 * @nid: NID to query
 * @ratesp: the pointer to store the detected rate bitflags
 * @formatsp: the pointer to store the detected formats
 * @bpsp: the pointer to store the detected format widths
 *
 * Queries the supported PCM rates and formats.  The NULL @ratesp, @formatsp
 * or @bsps argument is ignored.
 *
 * Returns 0 if successful, otherwise a negative error code.
 */
int snd_hda_query_supported_pcm(struct hda_codec *codec, hda_nid_t nid,
				u32 *ratesp, u64 *formatsp, unsigned int *bpsp)
{
	int i;
	unsigned int val, streams;

	val = 0;
	if (nid != codec->afg &&
	    (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) {
		val = snd_hda_param_read(codec, nid, AC_PAR_PCM);
		if (val == -1)
			return -EIO;
	}
	if (! val)
		val = snd_hda_param_read(codec, codec->afg, AC_PAR_PCM);

	if (ratesp) {
		u32 rates = 0;
		for (i = 0; rate_bits[i].hz; i++) {
			if (val & (1 << i))
				rates |= rate_bits[i].alsa_bits;
		}
		*ratesp = rates;
	}

	if (formatsp || bpsp) {
		u64 formats = 0;
		unsigned int bps;
		unsigned int wcaps;

		wcaps = get_wcaps(codec, nid);
		streams = snd_hda_param_read(codec, nid, AC_PAR_STREAM);
		if (streams == -1)
			return -EIO;
		if (! streams) {
			streams = snd_hda_param_read(codec, codec->afg, AC_PAR_STREAM);
			if (streams == -1)
				return -EIO;
		}

		bps = 0;
		if (streams & AC_SUPFMT_PCM) {
			if (val & AC_SUPPCM_BITS_8) {
				formats |= SNDRV_PCM_FMTBIT_U8;
				bps = 8;
			}
			if (val & AC_SUPPCM_BITS_16) {
				formats |= SNDRV_PCM_FMTBIT_S16_LE;
				bps = 16;
			}
			if (wcaps & AC_WCAP_DIGITAL) {
				if (val & AC_SUPPCM_BITS_32)
					formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
				if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24))
					formats |= SNDRV_PCM_FMTBIT_S32_LE;
				if (val & AC_SUPPCM_BITS_24)
					bps = 24;
				else if (val & AC_SUPPCM_BITS_20)
					bps = 20;
			} else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24|AC_SUPPCM_BITS_32)) {
				formats |= SNDRV_PCM_FMTBIT_S32_LE;
				if (val & AC_SUPPCM_BITS_32)
					bps = 32;
				else if (val & AC_SUPPCM_BITS_20)
					bps = 20;
				else if (val & AC_SUPPCM_BITS_24)
					bps = 24;
			}
		}
		else if (streams == AC_SUPFMT_FLOAT32) { /* should be exclusive */
			formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
			bps = 32;
		} else if (streams == AC_SUPFMT_AC3) { /* should be exclusive */
			/* temporary hack: we have still no proper support
			 * for the direct AC3 stream...
			 */
			formats |= SNDRV_PCM_FMTBIT_U8;
			bps = 8;
		}
		if (formatsp)
			*formatsp = formats;
		if (bpsp)
			*bpsp = bps;
	}

	return 0;
}

/**
 * snd_hda_is_supported_format - check whether the given node supports the format val
 *
 * Returns 1 if supported, 0 if not.
 */
int snd_hda_is_supported_format(struct hda_codec *codec, hda_nid_t nid,
				unsigned int format)
{
	int i;
	unsigned int val = 0, rate, stream;

	if (nid != codec->afg &&
	    (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) {
		val = snd_hda_param_read(codec, nid, AC_PAR_PCM);
		if (val == -1)
			return 0;
	}
	if (! val) {
		val = snd_hda_param_read(codec, codec->afg, AC_PAR_PCM);
		if (val == -1)
			return 0;
	}

	rate = format & 0xff00;
	for (i = 0; rate_bits[i].hz; i++)
		if (rate_bits[i].hda_fmt == rate) {
			if (val & (1 << i))
				break;
			return 0;
		}
	if (! rate_bits[i].hz)
		return 0;

	stream = snd_hda_param_read(codec, nid, AC_PAR_STREAM);
	if (stream == -1)
		return 0;
	if (! stream && nid != codec->afg)
		stream = snd_hda_param_read(codec, codec->afg, AC_PAR_STREAM);
	if (! stream || stream == -1)
		return 0;

	if (stream & AC_SUPFMT_PCM) {
		switch (format & 0xf0) {
		case 0x00:
			if (! (val & AC_SUPPCM_BITS_8))
				return 0;
			break;
		case 0x10:
			if (! (val & AC_SUPPCM_BITS_16))
				return 0;
			break;
		case 0x20:
			if (! (val & AC_SUPPCM_BITS_20))
				return 0;
			break;
		case 0x30:
			if (! (val & AC_SUPPCM_BITS_24))
				return 0;
			break;
		case 0x40:
			if (! (val & AC_SUPPCM_BITS_32))
				return 0;
			break;
		default:
			return 0;
		}
	} else {
		/* FIXME: check for float32 and AC3? */
	}

	return 1;
}

/*
 * PCM stuff
 */
static int hda_pcm_default_open_close(struct hda_pcm_stream *hinfo,
				      struct hda_codec *codec,
				      struct snd_pcm_substream *substream)
{
	return 0;
}

static int hda_pcm_default_prepare(struct hda_pcm_stream *hinfo,
				   struct hda_codec *codec,
				   unsigned int stream_tag,
				   unsigned int format,
				   struct snd_pcm_substream *substream)
{
	snd_hda_codec_setup_stream(codec, hinfo->nid, stream_tag, 0, format);
	return 0;
}

static int hda_pcm_default_cleanup(struct hda_pcm_stream *hinfo,
				   struct hda_codec *codec,
				   struct snd_pcm_substream *substream)
{
	snd_hda_codec_setup_stream(codec, hinfo->nid, 0, 0, 0);
	return 0;
}

static int set_pcm_default_values(struct hda_codec *codec, struct hda_pcm_stream *info)
{
	if (info->nid) {
		/* query support PCM information from the given NID */
		if (! info->rates || ! info->formats)
			snd_hda_query_supported_pcm(codec, info->nid,
						    info->rates ? NULL : &info->rates,
						    info->formats ? NULL : &info->formats,
						    info->maxbps ? NULL : &info->maxbps);
	}
	if (info->ops.open == NULL)
		info->ops.open = hda_pcm_default_open_close;
	if (info->ops.close == NULL)
		info->ops.close = hda_pcm_default_open_close;
	if (info->ops.prepare == NULL) {
		snd_assert(info->nid, return -EINVAL);
		info->ops.prepare = hda_pcm_default_prepare;
	}
	if (info->ops.cleanup == NULL) {
		snd_assert(info->nid, return -EINVAL);
		info->ops.cleanup = hda_pcm_default_cleanup;
	}
	return 0;
}

/**
 * snd_hda_build_pcms - build PCM information
 * @bus: the BUS
 *
 * Create PCM information for each codec included in the bus.
 *
 * The build_pcms codec patch is requested to set up codec->num_pcms and
 * codec->pcm_info properly.  The array is referred by the top-level driver
 * to create its PCM instances.
 * The allocated codec->pcm_info should be released in codec->patch_ops.free
 * callback.
 *
 * At least, substreams, channels_min and channels_max must be filled for
 * each stream.  substreams = 0 indicates that the stream doesn't exist.
 * When rates and/or formats are zero, the supported values are queried
 * from the given nid.  The nid is used also by the default ops.prepare
 * and ops.cleanup callbacks.
 *
 * The driver needs to call ops.open in its open callback.  Similarly,
 * ops.close is supposed to be called in the close callback.
 * ops.prepare should be called in the prepare or hw_params callback
 * with the proper parameters for set up.
 * ops.cleanup should be called in hw_free for clean up of streams.
 *
 * This function returns 0 if successfull, or a negative error code.
 */
int snd_hda_build_pcms(struct hda_bus *bus)
{
	struct list_head *p;

	list_for_each(p, &bus->codec_list) {
		struct hda_codec *codec = list_entry(p, struct hda_codec, list);
		unsigned int pcm, s;
		int err;
		if (! codec->patch_ops.build_pcms)
			continue;
		err = codec->patch_ops.build_pcms(codec);
		if (err < 0)
			return err;
		for (pcm = 0; pcm < codec->num_pcms; pcm++) {
			for (s = 0; s < 2; s++) {
				struct hda_pcm_stream *info;
				info = &codec->pcm_info[pcm].stream[s];
				if (! info->substreams)
					continue;
				err = set_pcm_default_values(codec, info);
				if (err < 0)
					return err;
			}
		}
	}
	return 0;
}

EXPORT_SYMBOL(snd_hda_build_pcms);

/**
 * snd_hda_check_board_config - compare the current codec with the config table
 * @codec: the HDA codec
 * @tbl: configuration table, terminated by null entries
 *
 * Compares the modelname or PCI subsystem id of the current codec with the
 * given configuration table.  If a matching entry is found, returns its
 * config value (supposed to be 0 or positive).
 *
 * If no entries are matching, the function returns a negative value.
 */
int snd_hda_check_board_config(struct hda_codec *codec, const struct hda_board_config *tbl)
{
	const struct hda_board_config *c;

	if (codec->bus->modelname) {
		for (c = tbl; c->modelname || c->pci_subvendor; c++) {
			if (c->modelname &&
			    ! strcmp(codec->bus->modelname, c->modelname)) {
				snd_printd(KERN_INFO "hda_codec: model '%s' is selected\n", c->modelname);
				return c->config;
			}
		}
	}

	if (codec->bus->pci) {
		u16 subsystem_vendor, subsystem_device;
		pci_read_config_word(codec->bus->pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
		pci_read_config_word(codec->bus->pci, PCI_SUBSYSTEM_ID, &subsystem_device);
		for (c = tbl; c->modelname || c->pci_subvendor; c++) {
			if (c->pci_subvendor == subsystem_vendor &&
			    (! c->pci_subdevice /* all match */||
			     (c->pci_subdevice == subsystem_device))) {
				snd_printdd(KERN_INFO "hda_codec: PCI %x:%x, codec config %d is selected\n",
					    subsystem_vendor, subsystem_device, c->config);
				return c->config;
			}
		}
	}
	return -1;
}

/**
 * snd_hda_add_new_ctls - create controls from the array
 * @codec: the HDA codec
 * @knew: the array of struct snd_kcontrol_new
 *
 * This helper function creates and add new controls in the given array.
 * The array must be terminated with an empty entry as terminator.
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_add_new_ctls(struct hda_codec *codec, struct snd_kcontrol_new *knew)
{
	int err;

	for (; knew->name; knew++) {
		struct snd_kcontrol *kctl;
		kctl = snd_ctl_new1(knew, codec);
		if (! kctl)
			return -ENOMEM;
		err = snd_ctl_add(codec->bus->card, kctl);
		if (err < 0) {
			if (! codec->addr)
				return err;
			kctl = snd_ctl_new1(knew, codec);
			if (! kctl)
				return -ENOMEM;
			kctl->id.device = codec->addr;
			if ((err = snd_ctl_add(codec->bus->card, kctl)) < 0)
				return err;
		}
	}
	return 0;
}


/*
 * Channel mode helper
 */
int snd_hda_ch_mode_info(struct hda_codec *codec, struct snd_ctl_elem_info *uinfo,
			 const struct hda_channel_mode *chmode, int num_chmodes)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = num_chmodes;
	if (uinfo->value.enumerated.item >= num_chmodes)
		uinfo->value.enumerated.item = num_chmodes - 1;
	sprintf(uinfo->value.enumerated.name, "%dch",
		chmode[uinfo->value.enumerated.item].channels);
	return 0;
}

int snd_hda_ch_mode_get(struct hda_codec *codec, struct snd_ctl_elem_value *ucontrol,
			const struct hda_channel_mode *chmode, int num_chmodes,
			int max_channels)
{
	int i;

	for (i = 0; i < num_chmodes; i++) {
		if (max_channels == chmode[i].channels) {
			ucontrol->value.enumerated.item[0] = i;
			break;
		}
	}
	return 0;
}

int snd_hda_ch_mode_put(struct hda_codec *codec, struct snd_ctl_elem_value *ucontrol,
			const struct hda_channel_mode *chmode, int num_chmodes,
			int *max_channelsp)
{
	unsigned int mode;

	mode = ucontrol->value.enumerated.item[0];
	snd_assert(mode < num_chmodes, return -EINVAL);
	if (*max_channelsp == chmode[mode].channels && ! codec->in_resume)
		return 0;
	/* change the current channel setting */
	*max_channelsp = chmode[mode].channels;
	if (chmode[mode].sequence)
		snd_hda_sequence_write(codec, chmode[mode].sequence);
	return 1;
}

/*
 * input MUX helper
 */
int snd_hda_input_mux_info(const struct hda_input_mux *imux, struct snd_ctl_elem_info *uinfo)
{
	unsigned int index;

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = imux->num_items;
	index = uinfo->value.enumerated.item;
	if (index >= imux->num_items)
		index = imux->num_items - 1;
	strcpy(uinfo->value.enumerated.name, imux->items[index].label);
	return 0;
}

int snd_hda_input_mux_put(struct hda_codec *codec, const struct hda_input_mux *imux,
			  struct snd_ctl_elem_value *ucontrol, hda_nid_t nid,
			  unsigned int *cur_val)
{
	unsigned int idx;

	idx = ucontrol->value.enumerated.item[0];
	if (idx >= imux->num_items)
		idx = imux->num_items - 1;
	if (*cur_val == idx && ! codec->in_resume)
		return 0;
	snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CONNECT_SEL,
			    imux->items[idx].index);
	*cur_val = idx;
	return 1;
}


/*
 * Multi-channel / digital-out PCM helper functions
 */

/*
 * open the digital out in the exclusive mode
 */
int snd_hda_multi_out_dig_open(struct hda_codec *codec, struct hda_multi_out *mout)
{
	mutex_lock(&codec->spdif_mutex);
	if (mout->dig_out_used) {
		mutex_unlock(&codec->spdif_mutex);
		return -EBUSY; /* already being used */
	}
	mout->dig_out_used = HDA_DIG_EXCLUSIVE;
	mutex_unlock(&codec->spdif_mutex);
	return 0;
}

/*
 * release the digital out
 */
int snd_hda_multi_out_dig_close(struct hda_codec *codec, struct hda_multi_out *mout)
{
	mutex_lock(&codec->spdif_mutex);
	mout->dig_out_used = 0;
	mutex_unlock(&codec->spdif_mutex);
	return 0;
}

/*
 * set up more restrictions for analog out
 */
int snd_hda_multi_out_analog_open(struct hda_codec *codec, struct hda_multi_out *mout,
				  struct snd_pcm_substream *substream)
{
	substream->runtime->hw.channels_max = mout->max_channels;
	return snd_pcm_hw_constraint_step(substream->runtime, 0,
					  SNDRV_PCM_HW_PARAM_CHANNELS, 2);
}

/*
 * set up the i/o for analog out
 * when the digital out is available, copy the front out to digital out, too.
 */
int snd_hda_multi_out_analog_prepare(struct hda_codec *codec, struct hda_multi_out *mout,
				     unsigned int stream_tag,
				     unsigned int format,
				     struct snd_pcm_substream *substream)
{
	hda_nid_t *nids = mout->dac_nids;
	int chs = substream->runtime->channels;
	int i;

	mutex_lock(&codec->spdif_mutex);
	if (mout->dig_out_nid && mout->dig_out_used != HDA_DIG_EXCLUSIVE) {
		if (chs == 2 &&
		    snd_hda_is_supported_format(codec, mout->dig_out_nid, format) &&
		    ! (codec->spdif_status & IEC958_AES0_NONAUDIO)) {
			mout->dig_out_used = HDA_DIG_ANALOG_DUP;
			/* setup digital receiver */
			snd_hda_codec_setup_stream(codec, mout->dig_out_nid,
						   stream_tag, 0, format);
		} else {
			mout->dig_out_used = 0;
			snd_hda_codec_setup_stream(codec, mout->dig_out_nid, 0, 0, 0);
		}
	}
	mutex_unlock(&codec->spdif_mutex);

	/* front */
	snd_hda_codec_setup_stream(codec, nids[HDA_FRONT], stream_tag, 0, format);
	if (mout->hp_nid)
		/* headphone out will just decode front left/right (stereo) */
		snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag, 0, format);
	/* extra outputs copied from front */
	for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++)
		if (mout->extra_out_nid[i])
			snd_hda_codec_setup_stream(codec,
						   mout->extra_out_nid[i],
						   stream_tag, 0, format);

	/* surrounds */
	for (i = 1; i < mout->num_dacs; i++) {
		if (chs >= (i + 1) * 2) /* independent out */
			snd_hda_codec_setup_stream(codec, nids[i], stream_tag, i * 2,
						   format);
		else /* copy front */
			snd_hda_codec_setup_stream(codec, nids[i], stream_tag, 0,
						   format);
	}
	return 0;
}

/*
 * clean up the setting for analog out
 */
int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec, struct hda_multi_out *mout)
{
	hda_nid_t *nids = mout->dac_nids;
	int i;

	for (i = 0; i < mout->num_dacs; i++)
		snd_hda_codec_setup_stream(codec, nids[i], 0, 0, 0);
	if (mout->hp_nid)
		snd_hda_codec_setup_stream(codec, mout->hp_nid, 0, 0, 0);
	for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++)
		if (mout->extra_out_nid[i])
			snd_hda_codec_setup_stream(codec,
						   mout->extra_out_nid[i],
						   0, 0, 0);
	mutex_lock(&codec->spdif_mutex);
	if (mout->dig_out_nid && mout->dig_out_used == HDA_DIG_ANALOG_DUP) {
		snd_hda_codec_setup_stream(codec, mout->dig_out_nid, 0, 0, 0);
		mout->dig_out_used = 0;
	}
	mutex_unlock(&codec->spdif_mutex);
	return 0;
}

/*
 * Helper for automatic ping configuration
 */

static int is_in_nid_list(hda_nid_t nid, hda_nid_t *list)
{
	for (; *list; list++)
		if (*list == nid)
			return 1;
	return 0;
}

/*
 * Parse all pin widgets and store the useful pin nids to cfg
 *
 * The number of line-outs or any primary output is stored in line_outs,
 * and the corresponding output pins are assigned to line_out_pins[],
 * in the order of front, rear, CLFE, side, ...
 *
 * If more extra outputs (speaker and headphone) are found, the pins are
 * assisnged to hp_pin and speaker_pins[], respectively.  If no line-out jack
 * is detected, one of speaker of HP pins is assigned as the primary
 * output, i.e. to line_out_pins[0].  So, line_outs is always positive
 * if any analog output exists.
 * 
 * The analog input pins are assigned to input_pins array.
 * The digital input/output pins are assigned to dig_in_pin and dig_out_pin,
 * respectively.
 */
int snd_hda_parse_pin_def_config(struct hda_codec *codec, struct auto_pin_cfg *cfg,
				 hda_nid_t *ignore_nids)
{
	hda_nid_t nid, nid_start;
	int i, j, nodes;
	short seq, assoc_line_out, sequences[ARRAY_SIZE(cfg->line_out_pins)];

	memset(cfg, 0, sizeof(*cfg));

	memset(sequences, 0, sizeof(sequences));
	assoc_line_out = 0;

	nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid_start);
	for (nid = nid_start; nid < nodes + nid_start; nid++) {
		unsigned int wid_caps = get_wcaps(codec, nid);
		unsigned int wid_type = (wid_caps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
		unsigned int def_conf;
		short assoc, loc;

		/* read all default configuration for pin complex */
		if (wid_type != AC_WID_PIN)
			continue;
		/* ignore the given nids (e.g. pc-beep returns error) */
		if (ignore_nids && is_in_nid_list(nid, ignore_nids))
			continue;

		def_conf = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
		if (get_defcfg_connect(def_conf) == AC_JACK_PORT_NONE)
			continue;
		loc = get_defcfg_location(def_conf);
		switch (get_defcfg_device(def_conf)) {
		case AC_JACK_LINE_OUT:
			seq = get_defcfg_sequence(def_conf);
			assoc = get_defcfg_association(def_conf);
			if (! assoc)
				continue;
			if (! assoc_line_out)
				assoc_line_out = assoc;
			else if (assoc_line_out != assoc)
				continue;
			if (cfg->line_outs >= ARRAY_SIZE(cfg->line_out_pins))
				continue;
			cfg->line_out_pins[cfg->line_outs] = nid;
			sequences[cfg->line_outs] = seq;
			cfg->line_outs++;
			break;
		case AC_JACK_SPEAKER:
			if (cfg->speaker_outs >= ARRAY_SIZE(cfg->speaker_pins))
				continue;
			cfg->speaker_pins[cfg->speaker_outs] = nid;
			cfg->speaker_outs++;
			break;
		case AC_JACK_HP_OUT:
			cfg->hp_pin = nid;
			break;
		case AC_JACK_MIC_IN:
			if (loc == AC_JACK_LOC_FRONT)
				cfg->input_pins[AUTO_PIN_FRONT_MIC] = nid;
			else
				cfg->input_pins[AUTO_PIN_MIC] = nid;
			break;
		case AC_JACK_LINE_IN:
			if (loc == AC_JACK_LOC_FRONT)
				cfg->input_pins[AUTO_PIN_FRONT_LINE] = nid;
			else
				cfg->input_pins[AUTO_PIN_LINE] = nid;
			break;
		case AC_JACK_CD:
			cfg->input_pins[AUTO_PIN_CD] = nid;
			break;
		case AC_JACK_AUX:
			cfg->input_pins[AUTO_PIN_AUX] = nid;
			break;
		case AC_JACK_SPDIF_OUT:
			cfg->dig_out_pin = nid;
			break;
		case AC_JACK_SPDIF_IN:
			cfg->dig_in_pin = nid;
			break;
		}
	}

	/* sort by sequence */
	for (i = 0; i < cfg->line_outs; i++)
		for (j = i + 1; j < cfg->line_outs; j++)
			if (sequences[i] > sequences[j]) {
				seq = sequences[i];
				sequences[i] = sequences[j];
				sequences[j] = seq;
				nid = cfg->line_out_pins[i];
				cfg->line_out_pins[i] = cfg->line_out_pins[j];
				cfg->line_out_pins[j] = nid;
			}

	/* Reorder the surround channels
	 * ALSA sequence is front/surr/clfe/side
	 * HDA sequence is:
	 *    4-ch: front/surr  =>  OK as it is
	 *    6-ch: front/clfe/surr
	 *    8-ch: front/clfe/side/surr
	 */
	switch (cfg->line_outs) {
	case 3:
		nid = cfg->line_out_pins[1];
		cfg->line_out_pins[1] = cfg->line_out_pins[2];
		cfg->line_out_pins[2] = nid;
		break;
	case 4:
		nid = cfg->line_out_pins[1];
		cfg->line_out_pins[1] = cfg->line_out_pins[3];
		cfg->line_out_pins[3] = cfg->line_out_pins[2];
		cfg->line_out_pins[2] = nid;
		break;
	}

	/*
	 * debug prints of the parsed results
	 */
	snd_printd("autoconfig: line_outs=%d (0x%x/0x%x/0x%x/0x%x/0x%x)\n",
		   cfg->line_outs, cfg->line_out_pins[0], cfg->line_out_pins[1],
		   cfg->line_out_pins[2], cfg->line_out_pins[3],
		   cfg->line_out_pins[4]);
	snd_printd("   speaker_outs=%d (0x%x/0x%x/0x%x/0x%x/0x%x)\n",
		   cfg->speaker_outs, cfg->speaker_pins[0],
		   cfg->speaker_pins[1], cfg->speaker_pins[2],
		   cfg->speaker_pins[3], cfg->speaker_pins[4]);
	snd_printd("   hp=0x%x, dig_out=0x%x, din_in=0x%x\n",
		   cfg->hp_pin, cfg->dig_out_pin, cfg->dig_in_pin);
	snd_printd("   inputs: mic=0x%x, fmic=0x%x, line=0x%x, fline=0x%x,"
		   " cd=0x%x, aux=0x%x\n",
		   cfg->input_pins[AUTO_PIN_MIC],
		   cfg->input_pins[AUTO_PIN_FRONT_MIC],
		   cfg->input_pins[AUTO_PIN_LINE],
		   cfg->input_pins[AUTO_PIN_FRONT_LINE],
		   cfg->input_pins[AUTO_PIN_CD],
		   cfg->input_pins[AUTO_PIN_AUX]);

	/*
	 * FIX-UP: if no line-outs are detected, try to use speaker or HP pin
	 * as a primary output
	 */
	if (! cfg->line_outs) {
		if (cfg->speaker_outs) {
			cfg->line_outs = cfg->speaker_outs;
			memcpy(cfg->line_out_pins, cfg->speaker_pins,
			       sizeof(cfg->speaker_pins));
			cfg->speaker_outs = 0;
			memset(cfg->speaker_pins, 0, sizeof(cfg->speaker_pins));
		} else if (cfg->hp_pin) {
			cfg->line_outs = 1;
			cfg->line_out_pins[0] = cfg->hp_pin;
			cfg->hp_pin = 0;
		}
	}

	return 0;
}

/* labels for input pins */
const char *auto_pin_cfg_labels[AUTO_PIN_LAST] = {
	"Mic", "Front Mic", "Line", "Front Line", "CD", "Aux"
};


#ifdef CONFIG_PM
/*
 * power management
 */

/**
 * snd_hda_suspend - suspend the codecs
 * @bus: the HDA bus
 * @state: suspsend state
 *
 * Returns 0 if successful.
 */
int snd_hda_suspend(struct hda_bus *bus, pm_message_t state)
{
	struct list_head *p;

	/* FIXME: should handle power widget capabilities */
	list_for_each(p, &bus->codec_list) {
		struct hda_codec *codec = list_entry(p, struct hda_codec, list);
		if (codec->patch_ops.suspend)
			codec->patch_ops.suspend(codec, state);
		hda_set_power_state(codec,
				    codec->afg ? codec->afg : codec->mfg,
				    AC_PWRST_D3);
	}
	return 0;
}

EXPORT_SYMBOL(snd_hda_suspend);

/**
 * snd_hda_resume - resume the codecs
 * @bus: the HDA bus
 * @state: resume state
 *
 * Returns 0 if successful.
 */
int snd_hda_resume(struct hda_bus *bus)
{
	struct list_head *p;

	list_for_each(p, &bus->codec_list) {
		struct hda_codec *codec = list_entry(p, struct hda_codec, list);
		hda_set_power_state(codec,
				    codec->afg ? codec->afg : codec->mfg,
				    AC_PWRST_D0);
		if (codec->patch_ops.resume)
			codec->patch_ops.resume(codec);
	}
	return 0;
}

EXPORT_SYMBOL(snd_hda_resume);

/**
 * snd_hda_resume_ctls - resume controls in the new control list
 * @codec: the HDA codec
 * @knew: the array of struct snd_kcontrol_new
 *
 * This function resumes the mixer controls in the struct snd_kcontrol_new array,
 * originally for snd_hda_add_new_ctls().
 * The array must be terminated with an empty entry as terminator.
 */
int snd_hda_resume_ctls(struct hda_codec *codec, struct snd_kcontrol_new *knew)
{
	struct snd_ctl_elem_value *val;

	val = kmalloc(sizeof(*val), GFP_KERNEL);
	if (! val)
		return -ENOMEM;
	codec->in_resume = 1;
	for (; knew->name; knew++) {
		int i, count;
		count = knew->count ? knew->count : 1;
		for (i = 0; i < count; i++) {
			memset(val, 0, sizeof(*val));
			val->id.iface = knew->iface;
			val->id.device = knew->device;
			val->id.subdevice = knew->subdevice;
			strcpy(val->id.name, knew->name);
			val->id.index = knew->index ? knew->index : i;
			/* Assume that get callback reads only from cache,
			 * not accessing to the real hardware
			 */
			if (snd_ctl_elem_read(codec->bus->card, val) < 0)
				continue;
			snd_ctl_elem_write(codec->bus->card, NULL, val);
		}
	}
	codec->in_resume = 0;
	kfree(val);
	return 0;
}

/**
 * snd_hda_resume_spdif_out - resume the digital out
 * @codec: the HDA codec
 */
int snd_hda_resume_spdif_out(struct hda_codec *codec)
{
	return snd_hda_resume_ctls(codec, dig_mixes);
}

/**
 * snd_hda_resume_spdif_in - resume the digital in
 * @codec: the HDA codec
 */
int snd_hda_resume_spdif_in(struct hda_codec *codec)
{
	return snd_hda_resume_ctls(codec, dig_in_ctls);
}
#endif

/*
 *  INIT part
 */

static int __init alsa_hda_init(void)
{
	return 0;
}

static void __exit alsa_hda_exit(void)
{
}

module_init(alsa_hda_init)
module_exit(alsa_hda_exit)