summaryrefslogtreecommitdiffstats
path: root/sound/pci/rme9652/rme9652.c
blob: 9646a8422a85d3fb1149affa92df2ea51fb2e55c (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
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
/*
 *   ALSA driver for RME Digi9652 audio interfaces 
 *
 *	Copyright (c) 1999 IEM - Winfried Ritsch
 *      Copyright (c) 1999-2001  Paul Davis
 *
 *   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 <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/moduleparam.h>

#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/info.h>
#include <sound/asoundef.h>
#include <sound/initval.h>

#include <asm/current.h>
#include <asm/io.h>

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
static int precise_ptr[SNDRV_CARDS];			/* Enable precise pointer */

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for RME Digi9652 (Hammerfall) soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for RME Digi9652 (Hammerfall) soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable/disable specific RME96{52,36} soundcards.");
module_param_array(precise_ptr, bool, NULL, 0444);
MODULE_PARM_DESC(precise_ptr, "Enable precise pointer (doesn't work reliably).");
MODULE_AUTHOR("Paul Davis <pbd@op.net>, Winfried Ritsch");
MODULE_DESCRIPTION("RME Digi9652/Digi9636");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{RME,Hammerfall},"
		"{RME,Hammerfall-Light}}");

/* The Hammerfall has two sets of 24 ADAT + 2 S/PDIF channels, one for
   capture, one for playback. Both the ADAT and S/PDIF channels appear
   to the host CPU in the same block of memory. There is no functional
   difference between them in terms of access.
   
   The Hammerfall Light is identical to the Hammerfall, except that it
   has 2 sets 18 channels (16 ADAT + 2 S/PDIF) for capture and playback.
*/

#define RME9652_NCHANNELS       26
#define RME9636_NCHANNELS       18

/* Preferred sync source choices - used by "sync_pref" control switch */

#define RME9652_SYNC_FROM_SPDIF 0
#define RME9652_SYNC_FROM_ADAT1 1
#define RME9652_SYNC_FROM_ADAT2 2
#define RME9652_SYNC_FROM_ADAT3 3

/* Possible sources of S/PDIF input */

#define RME9652_SPDIFIN_OPTICAL 0	/* optical (ADAT1) */
#define RME9652_SPDIFIN_COAXIAL 1	/* coaxial (RCA) */
#define RME9652_SPDIFIN_INTERN  2	/* internal (CDROM) */

/* ------------- Status-Register bits --------------------- */

#define RME9652_IRQ	   (1<<0)	/* IRQ is High if not reset by irq_clear */
#define RME9652_lock_2	   (1<<1)	/* ADAT 3-PLL: 1=locked, 0=unlocked */
#define RME9652_lock_1	   (1<<2)	/* ADAT 2-PLL: 1=locked, 0=unlocked */
#define RME9652_lock_0	   (1<<3)	/* ADAT 1-PLL: 1=locked, 0=unlocked */
#define RME9652_fs48	   (1<<4)	/* sample rate is 0=44.1/88.2,1=48/96 Khz */
#define RME9652_wsel_rd	   (1<<5)	/* if Word-Clock is used and valid then 1 */
                                        /* bits 6-15 encode h/w buffer pointer position */
#define RME9652_sync_2	   (1<<16)	/* if ADAT-IN 3 in sync to system clock */
#define RME9652_sync_1	   (1<<17)	/* if ADAT-IN 2 in sync to system clock */
#define RME9652_sync_0	   (1<<18)	/* if ADAT-IN 1 in sync to system clock */
#define RME9652_DS_rd	   (1<<19)	/* 1=Double Speed Mode, 0=Normal Speed */
#define RME9652_tc_busy	   (1<<20)	/* 1=time-code copy in progress (960ms) */
#define RME9652_tc_out	   (1<<21)	/* time-code out bit */
#define RME9652_F_0	   (1<<22)	/* 000=64kHz, 100=88.2kHz, 011=96kHz  */
#define RME9652_F_1	   (1<<23)	/* 111=32kHz, 110=44.1kHz, 101=48kHz, */
#define RME9652_F_2	   (1<<24)	/* external Crystal Chip if ERF=1 */
#define RME9652_ERF	   (1<<25)	/* Error-Flag of SDPIF Receiver (1=No Lock) */
#define RME9652_buffer_id  (1<<26)	/* toggles by each interrupt on rec/play */
#define RME9652_tc_valid   (1<<27)	/* 1 = a signal is detected on time-code input */
#define RME9652_SPDIF_READ (1<<28)      /* byte available from Rev 1.5+ S/PDIF interface */

#define RME9652_sync	  (RME9652_sync_0|RME9652_sync_1|RME9652_sync_2)
#define RME9652_lock	  (RME9652_lock_0|RME9652_lock_1|RME9652_lock_2)
#define RME9652_F	  (RME9652_F_0|RME9652_F_1|RME9652_F_2)
#define rme9652_decode_spdif_rate(x) ((x)>>22)

/* Bit 6..15 : h/w buffer pointer */

#define RME9652_buf_pos	  0x000FFC0

/* Bits 31,30,29 are bits 5,4,3 of h/w pointer position on later
   Rev G EEPROMS and Rev 1.5 cards or later.
*/ 

#define RME9652_REV15_buf_pos(x) ((((x)&0xE0000000)>>26)|((x)&RME9652_buf_pos))

/* amount of io space we remap for register access. i'm not sure we
   even need this much, but 1K is nice round number :)
*/

#define RME9652_IO_EXTENT     1024

#define RME9652_init_buffer       0
#define RME9652_play_buffer       32	/* holds ptr to 26x64kBit host RAM */
#define RME9652_rec_buffer        36	/* holds ptr to 26x64kBit host RAM */
#define RME9652_control_register  64
#define RME9652_irq_clear         96
#define RME9652_time_code         100	/* useful if used with alesis adat */
#define RME9652_thru_base         128	/* 132...228 Thru for 26 channels */

/* Read-only registers */

/* Writing to any of the register locations writes to the status
   register. We'll use the first location as our point of access.
*/

#define RME9652_status_register    0

/* --------- Control-Register Bits ---------------- */


#define RME9652_start_bit	   (1<<0)	/* start record/play */
                                                /* bits 1-3 encode buffersize/latency */
#define RME9652_Master		   (1<<4)	/* Clock Mode Master=1,Slave/Auto=0 */
#define RME9652_IE		   (1<<5)	/* Interrupt Enable */
#define RME9652_freq		   (1<<6)       /* samplerate 0=44.1/88.2, 1=48/96 kHz */
#define RME9652_freq1		   (1<<7)       /* if 0, 32kHz, else always 1 */
#define RME9652_DS                 (1<<8)	/* Doule Speed 0=44.1/48, 1=88.2/96 Khz */
#define RME9652_PRO		   (1<<9)	/* S/PDIF out: 0=consumer, 1=professional */
#define RME9652_EMP		   (1<<10)	/*  Emphasis 0=None, 1=ON */
#define RME9652_Dolby		   (1<<11)	/*  Non-audio bit 1=set, 0=unset */
#define RME9652_opt_out	           (1<<12)	/* Use 1st optical OUT as SPDIF: 1=yes,0=no */
#define RME9652_wsel		   (1<<13)	/* use Wordclock as sync (overwrites master) */
#define RME9652_inp_0		   (1<<14)	/* SPDIF-IN: 00=optical (ADAT1),     */
#define RME9652_inp_1		   (1<<15)	/* 01=koaxial (Cinch), 10=Internal CDROM */
#define RME9652_SyncPref_ADAT2	   (1<<16)
#define RME9652_SyncPref_ADAT3	   (1<<17)
#define RME9652_SPDIF_RESET        (1<<18)      /* Rev 1.5+: h/w S/PDIF receiver */
#define RME9652_SPDIF_SELECT       (1<<19)
#define RME9652_SPDIF_CLOCK        (1<<20)
#define RME9652_SPDIF_WRITE        (1<<21)
#define RME9652_ADAT1_INTERNAL     (1<<22)      /* Rev 1.5+: if set, internal CD connector carries ADAT */

/* buffersize = 512Bytes * 2^n, where n is made from Bit2 ... Bit0 */

#define RME9652_latency            0x0e
#define rme9652_encode_latency(x)  (((x)&0x7)<<1)
#define rme9652_decode_latency(x)  (((x)>>1)&0x7)
#define rme9652_running_double_speed(s) ((s)->control_register & RME9652_DS)
#define RME9652_inp                (RME9652_inp_0|RME9652_inp_1)
#define rme9652_encode_spdif_in(x) (((x)&0x3)<<14)
#define rme9652_decode_spdif_in(x) (((x)>>14)&0x3)

#define RME9652_SyncPref_Mask      (RME9652_SyncPref_ADAT2|RME9652_SyncPref_ADAT3)
#define RME9652_SyncPref_ADAT1	   0
#define RME9652_SyncPref_SPDIF	   (RME9652_SyncPref_ADAT2|RME9652_SyncPref_ADAT3)

/* the size of a substream (1 mono data stream) */

#define RME9652_CHANNEL_BUFFER_SAMPLES  (16*1024)
#define RME9652_CHANNEL_BUFFER_BYTES    (4*RME9652_CHANNEL_BUFFER_SAMPLES)

/* the size of the area we need to allocate for DMA transfers. the
   size is the same regardless of the number of channels - the 
   9636 still uses the same memory area.

   Note that we allocate 1 more channel than is apparently needed
   because the h/w seems to write 1 byte beyond the end of the last
   page. Sigh.
*/

#define RME9652_DMA_AREA_BYTES ((RME9652_NCHANNELS+1) * RME9652_CHANNEL_BUFFER_BYTES)
#define RME9652_DMA_AREA_KILOBYTES (RME9652_DMA_AREA_BYTES/1024)

struct snd_rme9652 {
	int dev;

	spinlock_t lock;
	int irq;
	unsigned long port;
	void __iomem *iobase;
	
	int precise_ptr;

	u32 control_register;	/* cached value */
	u32 thru_bits;		/* thru 1=on, 0=off channel 1=Bit1... channel 26= Bit26 */

	u32 creg_spdif;
	u32 creg_spdif_stream;

	char *card_name;		/* hammerfall or hammerfall light names */

        size_t hw_offsetmask;     	/* &-with status register to get real hw_offset */
	size_t prev_hw_offset;		/* previous hw offset */
	size_t max_jitter;		/* maximum jitter in frames for 
					   hw pointer */
	size_t period_bytes;		/* guess what this is */

	unsigned char ds_channels;
	unsigned char ss_channels;	/* different for hammerfall/hammerfall-light */

	struct snd_dma_buffer playback_dma_buf;
	struct snd_dma_buffer capture_dma_buf;

	unsigned char *capture_buffer;	/* suitably aligned address */
	unsigned char *playback_buffer;	/* suitably aligned address */

	pid_t capture_pid;
	pid_t playback_pid;

	struct snd_pcm_substream *capture_substream;
	struct snd_pcm_substream *playback_substream;
	int running;

        int passthru;                   /* non-zero if doing pass-thru */
        int hw_rev;                     /* h/w rev * 10 (i.e. 1.5 has hw_rev = 15) */

	int last_spdif_sample_rate;	/* so that we can catch externally ... */
	int last_adat_sample_rate;	/* ... induced rate changes            */

        char *channel_map;

	struct snd_card *card;
	struct snd_pcm *pcm;
	struct pci_dev *pci;
	struct snd_kcontrol *spdif_ctl;

};

/* These tables map the ALSA channels 1..N to the channels that we
   need to use in order to find the relevant channel buffer. RME
   refer to this kind of mapping as between "the ADAT channel and
   the DMA channel." We index it using the logical audio channel,
   and the value is the DMA channel (i.e. channel buffer number)
   where the data for that channel can be read/written from/to.
*/

static char channel_map_9652_ss[26] = {
	0, 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
};

static char channel_map_9636_ss[26] = {
	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 
	/* channels 16 and 17 are S/PDIF */
	24, 25,
	/* channels 18-25 don't exist */
	-1, -1, -1, -1, -1, -1, -1, -1
};

static char channel_map_9652_ds[26] = {
	/* ADAT channels are remapped */
	1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23,
	/* channels 12 and 13 are S/PDIF */
	24, 25,
	/* others don't exist */
	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
};

static char channel_map_9636_ds[26] = {
	/* ADAT channels are remapped */
	1, 3, 5, 7, 9, 11, 13, 15,
	/* channels 8 and 9 are S/PDIF */
	24, 25
	/* others don't exist */
	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
};

static int snd_hammerfall_get_buffer(struct pci_dev *pci, struct snd_dma_buffer *dmab, size_t size)
{
	dmab->dev.type = SNDRV_DMA_TYPE_DEV;
	dmab->dev.dev = snd_dma_pci_data(pci);
	if (snd_dma_get_reserved_buf(dmab, snd_dma_pci_buf_id(pci))) {
		if (dmab->bytes >= size)
			return 0;
	}
	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
				size, dmab) < 0)
		return -ENOMEM;
	return 0;
}

static void snd_hammerfall_free_buffer(struct snd_dma_buffer *dmab, struct pci_dev *pci)
{
	if (dmab->area) {
		dmab->dev.dev = NULL; /* make it anonymous */
		snd_dma_reserve_buf(dmab, snd_dma_pci_buf_id(pci));
	}
}


static DEFINE_PCI_DEVICE_TABLE(snd_rme9652_ids) = {
	{
		.vendor	   = 0x10ee,
		.device	   = 0x3fc4,
		.subvendor = PCI_ANY_ID,
		.subdevice = PCI_ANY_ID,
	},	/* RME Digi9652 */
	{ 0, },
};

MODULE_DEVICE_TABLE(pci, snd_rme9652_ids);

static inline void rme9652_write(struct snd_rme9652 *rme9652, int reg, int val)
{
	writel(val, rme9652->iobase + reg);
}

static inline unsigned int rme9652_read(struct snd_rme9652 *rme9652, int reg)
{
	return readl(rme9652->iobase + reg);
}

static inline int snd_rme9652_use_is_exclusive(struct snd_rme9652 *rme9652)
{
	unsigned long flags;
	int ret = 1;

	spin_lock_irqsave(&rme9652->lock, flags);
	if ((rme9652->playback_pid != rme9652->capture_pid) &&
	    (rme9652->playback_pid >= 0) && (rme9652->capture_pid >= 0)) {
		ret = 0;
	}
	spin_unlock_irqrestore(&rme9652->lock, flags);
	return ret;
}

static inline int rme9652_adat_sample_rate(struct snd_rme9652 *rme9652)
{
	if (rme9652_running_double_speed(rme9652)) {
		return (rme9652_read(rme9652, RME9652_status_register) &
			RME9652_fs48) ? 96000 : 88200;
	} else {
		return (rme9652_read(rme9652, RME9652_status_register) &
			RME9652_fs48) ? 48000 : 44100;
	}
}

static inline void rme9652_compute_period_size(struct snd_rme9652 *rme9652)
{
	unsigned int i;

	i = rme9652->control_register & RME9652_latency;
	rme9652->period_bytes = 1 << ((rme9652_decode_latency(i) + 8));
	rme9652->hw_offsetmask = 
		(rme9652->period_bytes * 2 - 1) & RME9652_buf_pos;
	rme9652->max_jitter = 80;
}

static snd_pcm_uframes_t rme9652_hw_pointer(struct snd_rme9652 *rme9652)
{
	int status;
	unsigned int offset, frag;
	snd_pcm_uframes_t period_size = rme9652->period_bytes / 4;
	snd_pcm_sframes_t delta;

	status = rme9652_read(rme9652, RME9652_status_register);
	if (!rme9652->precise_ptr)
		return (status & RME9652_buffer_id) ? period_size : 0;
	offset = status & RME9652_buf_pos;

	/* The hardware may give a backward movement for up to 80 frames
           Martin Kirst <martin.kirst@freenet.de> knows the details.
	*/

	delta = rme9652->prev_hw_offset - offset;
	delta &= 0xffff;
	if (delta <= (snd_pcm_sframes_t)rme9652->max_jitter * 4)
		offset = rme9652->prev_hw_offset;
	else
		rme9652->prev_hw_offset = offset;
	offset &= rme9652->hw_offsetmask;
	offset /= 4;
	frag = status & RME9652_buffer_id;

	if (offset < period_size) {
		if (offset > rme9652->max_jitter) {
			if (frag)
				printk(KERN_ERR "Unexpected hw_pointer position (bufid == 0): status: %x offset: %d\n", status, offset);
		} else if (!frag)
			return 0;
		offset -= rme9652->max_jitter;
		if ((int)offset < 0)
			offset += period_size * 2;
	} else {
		if (offset > period_size + rme9652->max_jitter) {
			if (!frag)
				printk(KERN_ERR "Unexpected hw_pointer position (bufid == 1): status: %x offset: %d\n", status, offset);
		} else if (frag)
			return period_size;
		offset -= rme9652->max_jitter;
	}

	return offset;
}

static inline void rme9652_reset_hw_pointer(struct snd_rme9652 *rme9652)
{
	int i;

	/* reset the FIFO pointer to zero. We do this by writing to 8
	   registers, each of which is a 32bit wide register, and set
	   them all to zero. Note that s->iobase is a pointer to
	   int32, not pointer to char.  
	*/

	for (i = 0; i < 8; i++) {
		rme9652_write(rme9652, i * 4, 0);
		udelay(10);
	}
	rme9652->prev_hw_offset = 0;
}

static inline void rme9652_start(struct snd_rme9652 *s)
{
	s->control_register |= (RME9652_IE | RME9652_start_bit);
	rme9652_write(s, RME9652_control_register, s->control_register);
}

static inline void rme9652_stop(struct snd_rme9652 *s)
{
	s->control_register &= ~(RME9652_start_bit | RME9652_IE);
	rme9652_write(s, RME9652_control_register, s->control_register);
}

static int rme9652_set_interrupt_interval(struct snd_rme9652 *s,
					  unsigned int frames)
{
	int restart = 0;
	int n;

	spin_lock_irq(&s->lock);

	if ((restart = s->running)) {
		rme9652_stop(s);
	}

	frames >>= 7;
	n = 0;
	while (frames) {
		n++;
		frames >>= 1;
	}

	s->control_register &= ~RME9652_latency;
	s->control_register |= rme9652_encode_latency(n);

	rme9652_write(s, RME9652_control_register, s->control_register);

	rme9652_compute_period_size(s);

	if (restart)
		rme9652_start(s);

	spin_unlock_irq(&s->lock);

	return 0;
}

static int rme9652_set_rate(struct snd_rme9652 *rme9652, int rate)
{
	int restart;
	int reject_if_open = 0;
	int xrate;

	if (!snd_rme9652_use_is_exclusive (rme9652)) {
		return -EBUSY;
	}

	/* Changing from a "single speed" to a "double speed" rate is
	   not allowed if any substreams are open. This is because
	   such a change causes a shift in the location of 
	   the DMA buffers and a reduction in the number of available
	   buffers. 

	   Note that a similar but essentially insoluble problem
	   exists for externally-driven rate changes. All we can do
	   is to flag rate changes in the read/write routines.
	 */

	spin_lock_irq(&rme9652->lock);
	xrate = rme9652_adat_sample_rate(rme9652);

	switch (rate) {
	case 44100:
		if (xrate > 48000) {
			reject_if_open = 1;
		}
		rate = 0;
		break;
	case 48000:
		if (xrate > 48000) {
			reject_if_open = 1;
		}
		rate = RME9652_freq;
		break;
	case 88200:
		if (xrate < 48000) {
			reject_if_open = 1;
		}
		rate = RME9652_DS;
		break;
	case 96000:
		if (xrate < 48000) {
			reject_if_open = 1;
		}
		rate = RME9652_DS | RME9652_freq;
		break;
	default:
		spin_unlock_irq(&rme9652->lock);
		return -EINVAL;
	}

	if (reject_if_open && (rme9652->capture_pid >= 0 || rme9652->playback_pid >= 0)) {
		spin_unlock_irq(&rme9652->lock);
		return -EBUSY;
	}

	if ((restart = rme9652->running)) {
		rme9652_stop(rme9652);
	}
	rme9652->control_register &= ~(RME9652_freq | RME9652_DS);
	rme9652->control_register |= rate;
	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);

	if (restart) {
		rme9652_start(rme9652);
	}

	if (rate & RME9652_DS) {
		if (rme9652->ss_channels == RME9652_NCHANNELS) {
			rme9652->channel_map = channel_map_9652_ds;
		} else {
			rme9652->channel_map = channel_map_9636_ds;
		}
	} else {
		if (rme9652->ss_channels == RME9652_NCHANNELS) {
			rme9652->channel_map = channel_map_9652_ss;
		} else {
			rme9652->channel_map = channel_map_9636_ss;
		}
	}

	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static void rme9652_set_thru(struct snd_rme9652 *rme9652, int channel, int enable)
{
	int i;

	rme9652->passthru = 0;

	if (channel < 0) {

		/* set thru for all channels */

		if (enable) {
			for (i = 0; i < RME9652_NCHANNELS; i++) {
				rme9652->thru_bits |= (1 << i);
				rme9652_write(rme9652, RME9652_thru_base + i * 4, 1);
			}
		} else {
			for (i = 0; i < RME9652_NCHANNELS; i++) {
				rme9652->thru_bits &= ~(1 << i);
				rme9652_write(rme9652, RME9652_thru_base + i * 4, 0);
			}
		}

	} else {
		int mapped_channel;

		mapped_channel = rme9652->channel_map[channel];

		if (enable) {
			rme9652->thru_bits |= (1 << mapped_channel);
		} else {
			rme9652->thru_bits &= ~(1 << mapped_channel);
		}

		rme9652_write(rme9652,
			       RME9652_thru_base + mapped_channel * 4,
			       enable ? 1 : 0);			       
	}
}

static int rme9652_set_passthru(struct snd_rme9652 *rme9652, int onoff)
{
	if (onoff) {
		rme9652_set_thru(rme9652, -1, 1);

		/* we don't want interrupts, so do a
		   custom version of rme9652_start().
		*/

		rme9652->control_register =
			RME9652_inp_0 | 
			rme9652_encode_latency(7) |
			RME9652_start_bit;

		rme9652_reset_hw_pointer(rme9652);

		rme9652_write(rme9652, RME9652_control_register,
			      rme9652->control_register);
		rme9652->passthru = 1;
	} else {
		rme9652_set_thru(rme9652, -1, 0);
		rme9652_stop(rme9652);		
		rme9652->passthru = 0;
	}

	return 0;
}

static void rme9652_spdif_set_bit (struct snd_rme9652 *rme9652, int mask, int onoff)
{
	if (onoff) 
		rme9652->control_register |= mask;
	else 
		rme9652->control_register &= ~mask;
		
	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
}

static void rme9652_spdif_write_byte (struct snd_rme9652 *rme9652, const int val)
{
	long mask;
	long i;

	for (i = 0, mask = 0x80; i < 8; i++, mask >>= 1) {
		if (val & mask)
			rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_WRITE, 1);
		else 
			rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_WRITE, 0);

		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 1);
		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 0);
	}
}

static int rme9652_spdif_read_byte (struct snd_rme9652 *rme9652)
{
	long mask;
	long val;
	long i;

	val = 0;

	for (i = 0, mask = 0x80;  i < 8; i++, mask >>= 1) {
		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 1);
		if (rme9652_read (rme9652, RME9652_status_register) & RME9652_SPDIF_READ)
			val |= mask;
		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 0);
	}

	return val;
}

static void rme9652_write_spdif_codec (struct snd_rme9652 *rme9652, const int address, const int data)
{
	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 1);
	rme9652_spdif_write_byte (rme9652, 0x20);
	rme9652_spdif_write_byte (rme9652, address);
	rme9652_spdif_write_byte (rme9652, data);
	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 0);
}


static int rme9652_spdif_read_codec (struct snd_rme9652 *rme9652, const int address)
{
	int ret;

	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 1);
	rme9652_spdif_write_byte (rme9652, 0x20);
	rme9652_spdif_write_byte (rme9652, address);
	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 0);
	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 1);

	rme9652_spdif_write_byte (rme9652, 0x21);
	ret = rme9652_spdif_read_byte (rme9652);
	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 0);

	return ret;
}

static void rme9652_initialize_spdif_receiver (struct snd_rme9652 *rme9652)
{
	/* XXX what unsets this ? */

	rme9652->control_register |= RME9652_SPDIF_RESET;

	rme9652_write_spdif_codec (rme9652, 4, 0x40);
	rme9652_write_spdif_codec (rme9652, 17, 0x13);
	rme9652_write_spdif_codec (rme9652, 6, 0x02);
}

static inline int rme9652_spdif_sample_rate(struct snd_rme9652 *s)
{
	unsigned int rate_bits;

	if (rme9652_read(s, RME9652_status_register) & RME9652_ERF) {
		return -1;	/* error condition */
	}
	
	if (s->hw_rev == 15) {

		int x, y, ret;
		
		x = rme9652_spdif_read_codec (s, 30);

		if (x != 0) 
			y = 48000 * 64 / x;
		else
			y = 0;

		if      (y > 30400 && y < 33600)  ret = 32000; 
		else if (y > 41900 && y < 46000)  ret = 44100;
		else if (y > 46000 && y < 50400)  ret = 48000;
		else if (y > 60800 && y < 67200)  ret = 64000;
		else if (y > 83700 && y < 92000)  ret = 88200;
		else if (y > 92000 && y < 100000) ret = 96000;
		else                              ret = 0;
		return ret;
	}

	rate_bits = rme9652_read(s, RME9652_status_register) & RME9652_F;

	switch (rme9652_decode_spdif_rate(rate_bits)) {
	case 0x7:
		return 32000;
		break;

	case 0x6:
		return 44100;
		break;

	case 0x5:
		return 48000;
		break;

	case 0x4:
		return 88200;
		break;

	case 0x3:
		return 96000;
		break;

	case 0x0:
		return 64000;
		break;

	default:
		snd_printk(KERN_ERR "%s: unknown S/PDIF input rate (bits = 0x%x)\n",
			   s->card_name, rate_bits);
		return 0;
		break;
	}
}

/*-----------------------------------------------------------------------------
  Control Interface
  ----------------------------------------------------------------------------*/

static u32 snd_rme9652_convert_from_aes(struct snd_aes_iec958 *aes)
{
	u32 val = 0;
	val |= (aes->status[0] & IEC958_AES0_PROFESSIONAL) ? RME9652_PRO : 0;
	val |= (aes->status[0] & IEC958_AES0_NONAUDIO) ? RME9652_Dolby : 0;
	if (val & RME9652_PRO)
		val |= (aes->status[0] & IEC958_AES0_PRO_EMPHASIS_5015) ? RME9652_EMP : 0;
	else
		val |= (aes->status[0] & IEC958_AES0_CON_EMPHASIS_5015) ? RME9652_EMP : 0;
	return val;
}

static void snd_rme9652_convert_to_aes(struct snd_aes_iec958 *aes, u32 val)
{
	aes->status[0] = ((val & RME9652_PRO) ? IEC958_AES0_PROFESSIONAL : 0) |
			 ((val & RME9652_Dolby) ? IEC958_AES0_NONAUDIO : 0);
	if (val & RME9652_PRO)
		aes->status[0] |= (val & RME9652_EMP) ? IEC958_AES0_PRO_EMPHASIS_5015 : 0;
	else
		aes->status[0] |= (val & RME9652_EMP) ? IEC958_AES0_CON_EMPHASIS_5015 : 0;
}

static int snd_rme9652_control_spdif_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_rme9652_control_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	
	snd_rme9652_convert_to_aes(&ucontrol->value.iec958, rme9652->creg_spdif);
	return 0;
}

static int snd_rme9652_control_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	u32 val;
	
	val = snd_rme9652_convert_from_aes(&ucontrol->value.iec958);
	spin_lock_irq(&rme9652->lock);
	change = val != rme9652->creg_spdif;
	rme9652->creg_spdif = val;
	spin_unlock_irq(&rme9652->lock);
	return change;
}

static int snd_rme9652_control_spdif_stream_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_rme9652_control_spdif_stream_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	
	snd_rme9652_convert_to_aes(&ucontrol->value.iec958, rme9652->creg_spdif_stream);
	return 0;
}

static int snd_rme9652_control_spdif_stream_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	u32 val;
	
	val = snd_rme9652_convert_from_aes(&ucontrol->value.iec958);
	spin_lock_irq(&rme9652->lock);
	change = val != rme9652->creg_spdif_stream;
	rme9652->creg_spdif_stream = val;
	rme9652->control_register &= ~(RME9652_PRO | RME9652_Dolby | RME9652_EMP);
	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register |= val);
	spin_unlock_irq(&rme9652->lock);
	return change;
}

static int snd_rme9652_control_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_rme9652_control_spdif_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.iec958.status[0] = kcontrol->private_value;
	return 0;
}

#define RME9652_ADAT1_IN(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_rme9652_info_adat1_in, \
  .get = snd_rme9652_get_adat1_in, \
  .put = snd_rme9652_put_adat1_in }

static unsigned int rme9652_adat1_in(struct snd_rme9652 *rme9652)
{
	if (rme9652->control_register & RME9652_ADAT1_INTERNAL)
		return 1; 
	return 0;
}

static int rme9652_set_adat1_input(struct snd_rme9652 *rme9652, int internal)
{
	int restart = 0;

	if (internal) {
		rme9652->control_register |= RME9652_ADAT1_INTERNAL;
	} else {
		rme9652->control_register &= ~RME9652_ADAT1_INTERNAL;
	}

	/* XXX do we actually need to stop the card when we do this ? */

	if ((restart = rme9652->running)) {
		rme9652_stop(rme9652);
	}

	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);

	if (restart) {
		rme9652_start(rme9652);
	}

	return 0;
}

static int snd_rme9652_info_adat1_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[2] = {"ADAT1", "Internal"};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;
	if (uinfo->value.enumerated.item > 1)
		uinfo->value.enumerated.item = 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_rme9652_get_adat1_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	
	spin_lock_irq(&rme9652->lock);
	ucontrol->value.enumerated.item[0] = rme9652_adat1_in(rme9652);
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static int snd_rme9652_put_adat1_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;
	
	if (!snd_rme9652_use_is_exclusive(rme9652))
		return -EBUSY;
	val = ucontrol->value.enumerated.item[0] % 2;
	spin_lock_irq(&rme9652->lock);
	change = val != rme9652_adat1_in(rme9652);
	if (change)
		rme9652_set_adat1_input(rme9652, val);
	spin_unlock_irq(&rme9652->lock);
	return change;
}

#define RME9652_SPDIF_IN(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_rme9652_info_spdif_in, \
  .get = snd_rme9652_get_spdif_in, .put = snd_rme9652_put_spdif_in }

static unsigned int rme9652_spdif_in(struct snd_rme9652 *rme9652)
{
	return rme9652_decode_spdif_in(rme9652->control_register &
				       RME9652_inp);
}

static int rme9652_set_spdif_input(struct snd_rme9652 *rme9652, int in)
{
	int restart = 0;

	rme9652->control_register &= ~RME9652_inp;
	rme9652->control_register |= rme9652_encode_spdif_in(in);

	if ((restart = rme9652->running)) {
		rme9652_stop(rme9652);
	}

	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);

	if (restart) {
		rme9652_start(rme9652);
	}

	return 0;
}

static int snd_rme9652_info_spdif_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[3] = {"ADAT1", "Coaxial", "Internal"};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 3;
	if (uinfo->value.enumerated.item > 2)
		uinfo->value.enumerated.item = 2;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_rme9652_get_spdif_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	
	spin_lock_irq(&rme9652->lock);
	ucontrol->value.enumerated.item[0] = rme9652_spdif_in(rme9652);
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static int snd_rme9652_put_spdif_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;
	
	if (!snd_rme9652_use_is_exclusive(rme9652))
		return -EBUSY;
	val = ucontrol->value.enumerated.item[0] % 3;
	spin_lock_irq(&rme9652->lock);
	change = val != rme9652_spdif_in(rme9652);
	if (change)
		rme9652_set_spdif_input(rme9652, val);
	spin_unlock_irq(&rme9652->lock);
	return change;
}

#define RME9652_SPDIF_OUT(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_rme9652_info_spdif_out, \
  .get = snd_rme9652_get_spdif_out, .put = snd_rme9652_put_spdif_out }

static int rme9652_spdif_out(struct snd_rme9652 *rme9652)
{
	return (rme9652->control_register & RME9652_opt_out) ? 1 : 0;
}

static int rme9652_set_spdif_output(struct snd_rme9652 *rme9652, int out)
{
	int restart = 0;

	if (out) {
		rme9652->control_register |= RME9652_opt_out;
	} else {
		rme9652->control_register &= ~RME9652_opt_out;
	}

	if ((restart = rme9652->running)) {
		rme9652_stop(rme9652);
	}

	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);

	if (restart) {
		rme9652_start(rme9652);
	}

	return 0;
}

#define snd_rme9652_info_spdif_out	snd_ctl_boolean_mono_info

static int snd_rme9652_get_spdif_out(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	
	spin_lock_irq(&rme9652->lock);
	ucontrol->value.integer.value[0] = rme9652_spdif_out(rme9652);
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static int snd_rme9652_put_spdif_out(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;
	
	if (!snd_rme9652_use_is_exclusive(rme9652))
		return -EBUSY;
	val = ucontrol->value.integer.value[0] & 1;
	spin_lock_irq(&rme9652->lock);
	change = (int)val != rme9652_spdif_out(rme9652);
	rme9652_set_spdif_output(rme9652, val);
	spin_unlock_irq(&rme9652->lock);
	return change;
}

#define RME9652_SYNC_MODE(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_rme9652_info_sync_mode, \
  .get = snd_rme9652_get_sync_mode, .put = snd_rme9652_put_sync_mode }

static int rme9652_sync_mode(struct snd_rme9652 *rme9652)
{
	if (rme9652->control_register & RME9652_wsel) {
		return 2;
	} else if (rme9652->control_register & RME9652_Master) {
		return 1;
	} else {
		return 0;
	}
}

static int rme9652_set_sync_mode(struct snd_rme9652 *rme9652, int mode)
{
	int restart = 0;

	switch (mode) {
	case 0:
		rme9652->control_register &=
		    ~(RME9652_Master | RME9652_wsel);
		break;
	case 1:
		rme9652->control_register =
		    (rme9652->control_register & ~RME9652_wsel) | RME9652_Master;
		break;
	case 2:
		rme9652->control_register |=
		    (RME9652_Master | RME9652_wsel);
		break;
	}

	if ((restart = rme9652->running)) {
		rme9652_stop(rme9652);
	}

	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);

	if (restart) {
		rme9652_start(rme9652);
	}

	return 0;
}

static int snd_rme9652_info_sync_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[3] = {"AutoSync", "Master", "Word Clock"};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 3;
	if (uinfo->value.enumerated.item > 2)
		uinfo->value.enumerated.item = 2;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_rme9652_get_sync_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	
	spin_lock_irq(&rme9652->lock);
	ucontrol->value.enumerated.item[0] = rme9652_sync_mode(rme9652);
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static int snd_rme9652_put_sync_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;
	
	val = ucontrol->value.enumerated.item[0] % 3;
	spin_lock_irq(&rme9652->lock);
	change = (int)val != rme9652_sync_mode(rme9652);
	rme9652_set_sync_mode(rme9652, val);
	spin_unlock_irq(&rme9652->lock);
	return change;
}

#define RME9652_SYNC_PREF(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_rme9652_info_sync_pref, \
  .get = snd_rme9652_get_sync_pref, .put = snd_rme9652_put_sync_pref }

static int rme9652_sync_pref(struct snd_rme9652 *rme9652)
{
	switch (rme9652->control_register & RME9652_SyncPref_Mask) {
	case RME9652_SyncPref_ADAT1:
		return RME9652_SYNC_FROM_ADAT1;
	case RME9652_SyncPref_ADAT2:
		return RME9652_SYNC_FROM_ADAT2;
	case RME9652_SyncPref_ADAT3:
		return RME9652_SYNC_FROM_ADAT3;
	case RME9652_SyncPref_SPDIF:
		return RME9652_SYNC_FROM_SPDIF;
	}
	/* Not reachable */
	return 0;
}

static int rme9652_set_sync_pref(struct snd_rme9652 *rme9652, int pref)
{
	int restart;

	rme9652->control_register &= ~RME9652_SyncPref_Mask;
	switch (pref) {
	case RME9652_SYNC_FROM_ADAT1:
		rme9652->control_register |= RME9652_SyncPref_ADAT1;
		break;
	case RME9652_SYNC_FROM_ADAT2:
		rme9652->control_register |= RME9652_SyncPref_ADAT2;
		break;
	case RME9652_SYNC_FROM_ADAT3:
		rme9652->control_register |= RME9652_SyncPref_ADAT3;
		break;
	case RME9652_SYNC_FROM_SPDIF:
		rme9652->control_register |= RME9652_SyncPref_SPDIF;
		break;
	}

	if ((restart = rme9652->running)) {
		rme9652_stop(rme9652);
	}

	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);

	if (restart) {
		rme9652_start(rme9652);
	}

	return 0;
}

static int snd_rme9652_info_sync_pref(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[4] = {"IEC958 In", "ADAT1 In", "ADAT2 In", "ADAT3 In"};
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = rme9652->ss_channels == RME9652_NCHANNELS ? 4 : 3;
	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_rme9652_get_sync_pref(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	
	spin_lock_irq(&rme9652->lock);
	ucontrol->value.enumerated.item[0] = rme9652_sync_pref(rme9652);
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static int snd_rme9652_put_sync_pref(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	int change, max;
	unsigned int val;
	
	if (!snd_rme9652_use_is_exclusive(rme9652))
		return -EBUSY;
	max = rme9652->ss_channels == RME9652_NCHANNELS ? 4 : 3;
	val = ucontrol->value.enumerated.item[0] % max;
	spin_lock_irq(&rme9652->lock);
	change = (int)val != rme9652_sync_pref(rme9652);
	rme9652_set_sync_pref(rme9652, val);
	spin_unlock_irq(&rme9652->lock);
	return change;
}

static int snd_rme9652_info_thru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = rme9652->ss_channels;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int snd_rme9652_get_thru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	unsigned int k;
	u32 thru_bits = rme9652->thru_bits;

	for (k = 0; k < rme9652->ss_channels; ++k) {
		ucontrol->value.integer.value[k] = !!(thru_bits & (1 << k));
	}
	return 0;
}

static int snd_rme9652_put_thru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int chn;
	u32 thru_bits = 0;

	if (!snd_rme9652_use_is_exclusive(rme9652))
		return -EBUSY;

	for (chn = 0; chn < rme9652->ss_channels; ++chn) {
		if (ucontrol->value.integer.value[chn])
			thru_bits |= 1 << chn;
	}
	
	spin_lock_irq(&rme9652->lock);
	change = thru_bits ^ rme9652->thru_bits;
	if (change) {
		for (chn = 0; chn < rme9652->ss_channels; ++chn) {
			if (!(change & (1 << chn)))
				continue;
			rme9652_set_thru(rme9652,chn,thru_bits&(1<<chn));
		}
	}
	spin_unlock_irq(&rme9652->lock);
	return !!change;
}

#define RME9652_PASSTHRU(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_rme9652_info_passthru, \
  .put = snd_rme9652_put_passthru, \
  .get = snd_rme9652_get_passthru }

#define snd_rme9652_info_passthru	snd_ctl_boolean_mono_info

static int snd_rme9652_get_passthru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);

	spin_lock_irq(&rme9652->lock);
	ucontrol->value.integer.value[0] = rme9652->passthru;
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static int snd_rme9652_put_passthru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;
	int err = 0;

	if (!snd_rme9652_use_is_exclusive(rme9652))
		return -EBUSY;

	val = ucontrol->value.integer.value[0] & 1;
	spin_lock_irq(&rme9652->lock);
	change = (ucontrol->value.integer.value[0] != rme9652->passthru);
	if (change)
		err = rme9652_set_passthru(rme9652, val);
	spin_unlock_irq(&rme9652->lock);
	return err ? err : change;
}

/* Read-only switches */

#define RME9652_SPDIF_RATE(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
  .info = snd_rme9652_info_spdif_rate, \
  .get = snd_rme9652_get_spdif_rate }

static int snd_rme9652_info_spdif_rate(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 96000;
	return 0;
}

static int snd_rme9652_get_spdif_rate(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	
	spin_lock_irq(&rme9652->lock);
	ucontrol->value.integer.value[0] = rme9652_spdif_sample_rate(rme9652);
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

#define RME9652_ADAT_SYNC(xname, xindex, xidx) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
  .info = snd_rme9652_info_adat_sync, \
  .get = snd_rme9652_get_adat_sync, .private_value = xidx }

static int snd_rme9652_info_adat_sync(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[4] = {"No Lock", "Lock", "No Lock Sync", "Lock Sync"};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 4;
	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_rme9652_get_adat_sync(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	unsigned int mask1, mask2, val;
	
	switch (kcontrol->private_value) {
	case 0: mask1 = RME9652_lock_0; mask2 = RME9652_sync_0; break;	
	case 1: mask1 = RME9652_lock_1; mask2 = RME9652_sync_1; break;	
	case 2: mask1 = RME9652_lock_2; mask2 = RME9652_sync_2; break;	
	default: return -EINVAL;
	}
	val = rme9652_read(rme9652, RME9652_status_register);
	ucontrol->value.enumerated.item[0] = (val & mask1) ? 1 : 0;
	ucontrol->value.enumerated.item[0] |= (val & mask2) ? 2 : 0;
	return 0;
}

#define RME9652_TC_VALID(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
  .info = snd_rme9652_info_tc_valid, \
  .get = snd_rme9652_get_tc_valid }

#define snd_rme9652_info_tc_valid	snd_ctl_boolean_mono_info

static int snd_rme9652_get_tc_valid(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
	
	ucontrol->value.integer.value[0] = 
		(rme9652_read(rme9652, RME9652_status_register) & RME9652_tc_valid) ? 1 : 0;
	return 0;
}

#ifdef ALSA_HAS_STANDARD_WAY_OF_RETURNING_TIMECODE

/* FIXME: this routine needs a port to the new control API --jk */

static int snd_rme9652_get_tc_value(void *private_data,
				    snd_kswitch_t *kswitch,
				    snd_switch_t *uswitch)
{
	struct snd_rme9652 *s = (struct snd_rme9652 *) private_data;
	u32 value;
	int i;

	uswitch->type = SNDRV_SW_TYPE_DWORD;

	if ((rme9652_read(s, RME9652_status_register) &
	     RME9652_tc_valid) == 0) {
		uswitch->value.data32[0] = 0;
		return 0;
	}

	/* timecode request */

	rme9652_write(s, RME9652_time_code, 0);

	/* XXX bug alert: loop-based timing !!!! */

	for (i = 0; i < 50; i++) {
		if (!(rme9652_read(s, i * 4) & RME9652_tc_busy))
			break;
	}

	if (!(rme9652_read(s, i * 4) & RME9652_tc_busy)) {
		return -EIO;
	}

	value = 0;

	for (i = 0; i < 32; i++) {
		value >>= 1;

		if (rme9652_read(s, i * 4) & RME9652_tc_out)
			value |= 0x80000000;
	}

	if (value > 2 * 60 * 48000) {
		value -= 2 * 60 * 48000;
	} else {
		value = 0;
	}

	uswitch->value.data32[0] = value;

	return 0;
}

#endif				/* ALSA_HAS_STANDARD_WAY_OF_RETURNING_TIMECODE */

static struct snd_kcontrol_new snd_rme9652_controls[] = {
{
	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
	.info =		snd_rme9652_control_spdif_info,
	.get =		snd_rme9652_control_spdif_get,
	.put =		snd_rme9652_control_spdif_put,
},
{
	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
	.info =		snd_rme9652_control_spdif_stream_info,
	.get =		snd_rme9652_control_spdif_stream_get,
	.put =		snd_rme9652_control_spdif_stream_put,
},
{
	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
	.info =		snd_rme9652_control_spdif_mask_info,
	.get =		snd_rme9652_control_spdif_mask_get,
	.private_value = IEC958_AES0_NONAUDIO |
			IEC958_AES0_PROFESSIONAL |
			IEC958_AES0_CON_EMPHASIS,	                                                                                      
},
{
	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
	.info =		snd_rme9652_control_spdif_mask_info,
	.get =		snd_rme9652_control_spdif_mask_get,
	.private_value = IEC958_AES0_NONAUDIO |
			IEC958_AES0_PROFESSIONAL |
			IEC958_AES0_PRO_EMPHASIS,
},
RME9652_SPDIF_IN("IEC958 Input Connector", 0),
RME9652_SPDIF_OUT("IEC958 Output also on ADAT1", 0),
RME9652_SYNC_MODE("Sync Mode", 0),
RME9652_SYNC_PREF("Preferred Sync Source", 0),
{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Channels Thru",
	.index = 0,
	.info = snd_rme9652_info_thru,
	.get = snd_rme9652_get_thru,
	.put = snd_rme9652_put_thru,
},
RME9652_SPDIF_RATE("IEC958 Sample Rate", 0),
RME9652_ADAT_SYNC("ADAT1 Sync Check", 0, 0),
RME9652_ADAT_SYNC("ADAT2 Sync Check", 0, 1),
RME9652_TC_VALID("Timecode Valid", 0),
RME9652_PASSTHRU("Passthru", 0)
};

static struct snd_kcontrol_new snd_rme9652_adat3_check =
RME9652_ADAT_SYNC("ADAT3 Sync Check", 0, 2);

static struct snd_kcontrol_new snd_rme9652_adat1_input =
RME9652_ADAT1_IN("ADAT1 Input Source", 0);

static int snd_rme9652_create_controls(struct snd_card *card, struct snd_rme9652 *rme9652)
{
	unsigned int idx;
	int err;
	struct snd_kcontrol *kctl;

	for (idx = 0; idx < ARRAY_SIZE(snd_rme9652_controls); idx++) {
		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme9652_controls[idx], rme9652))) < 0)
			return err;
		if (idx == 1)	/* IEC958 (S/PDIF) Stream */
			rme9652->spdif_ctl = kctl;
	}

	if (rme9652->ss_channels == RME9652_NCHANNELS)
		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme9652_adat3_check, rme9652))) < 0)
			return err;

	if (rme9652->hw_rev >= 15)
		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme9652_adat1_input, rme9652))) < 0)
			return err;

	return 0;
}

/*------------------------------------------------------------
   /proc interface 
 ------------------------------------------------------------*/

static void
snd_rme9652_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
{
	struct snd_rme9652 *rme9652 = (struct snd_rme9652 *) entry->private_data;
	u32 thru_bits = rme9652->thru_bits;
	int show_auto_sync_source = 0;
	int i;
	unsigned int status;
	int x;

	status = rme9652_read(rme9652, RME9652_status_register);

	snd_iprintf(buffer, "%s (Card #%d)\n", rme9652->card_name, rme9652->card->number + 1);
	snd_iprintf(buffer, "Buffers: capture %p playback %p\n",
		    rme9652->capture_buffer, rme9652->playback_buffer);
	snd_iprintf(buffer, "IRQ: %d Registers bus: 0x%lx VM: 0x%lx\n",
		    rme9652->irq, rme9652->port, (unsigned long)rme9652->iobase);
	snd_iprintf(buffer, "Control register: %x\n", rme9652->control_register);

	snd_iprintf(buffer, "\n");

	x = 1 << (6 + rme9652_decode_latency(rme9652->control_register & 
					     RME9652_latency));

	snd_iprintf(buffer, "Latency: %d samples (2 periods of %lu bytes)\n", 
		    x, (unsigned long) rme9652->period_bytes);
	snd_iprintf(buffer, "Hardware pointer (frames): %ld\n",
		    rme9652_hw_pointer(rme9652));
	snd_iprintf(buffer, "Passthru: %s\n",
		    rme9652->passthru ? "yes" : "no");

	if ((rme9652->control_register & (RME9652_Master | RME9652_wsel)) == 0) {
		snd_iprintf(buffer, "Clock mode: autosync\n");
		show_auto_sync_source = 1;
	} else if (rme9652->control_register & RME9652_wsel) {
		if (status & RME9652_wsel_rd) {
			snd_iprintf(buffer, "Clock mode: word clock\n");
		} else {
			snd_iprintf(buffer, "Clock mode: word clock (no signal)\n");
		}
	} else {
		snd_iprintf(buffer, "Clock mode: master\n");
	}

	if (show_auto_sync_source) {
		switch (rme9652->control_register & RME9652_SyncPref_Mask) {
		case RME9652_SyncPref_ADAT1:
			snd_iprintf(buffer, "Pref. sync source: ADAT1\n");
			break;
		case RME9652_SyncPref_ADAT2:
			snd_iprintf(buffer, "Pref. sync source: ADAT2\n");
			break;
		case RME9652_SyncPref_ADAT3:
			snd_iprintf(buffer, "Pref. sync source: ADAT3\n");
			break;
		case RME9652_SyncPref_SPDIF:
			snd_iprintf(buffer, "Pref. sync source: IEC958\n");
			break;
		default:
			snd_iprintf(buffer, "Pref. sync source: ???\n");
		}
	}

	if (rme9652->hw_rev >= 15)
		snd_iprintf(buffer, "\nADAT1 Input source: %s\n",
			    (rme9652->control_register & RME9652_ADAT1_INTERNAL) ?
			    "Internal" : "ADAT1 optical");

	snd_iprintf(buffer, "\n");

	switch (rme9652_decode_spdif_in(rme9652->control_register & 
					RME9652_inp)) {
	case RME9652_SPDIFIN_OPTICAL:
		snd_iprintf(buffer, "IEC958 input: ADAT1\n");
		break;
	case RME9652_SPDIFIN_COAXIAL:
		snd_iprintf(buffer, "IEC958 input: Coaxial\n");
		break;
	case RME9652_SPDIFIN_INTERN:
		snd_iprintf(buffer, "IEC958 input: Internal\n");
		break;
	default:
		snd_iprintf(buffer, "IEC958 input: ???\n");
		break;
	}

	if (rme9652->control_register & RME9652_opt_out) {
		snd_iprintf(buffer, "IEC958 output: Coaxial & ADAT1\n");
	} else {
		snd_iprintf(buffer, "IEC958 output: Coaxial only\n");
	}

	if (rme9652->control_register & RME9652_PRO) {
		snd_iprintf(buffer, "IEC958 quality: Professional\n");
	} else {
		snd_iprintf(buffer, "IEC958 quality: Consumer\n");
	}

	if (rme9652->control_register & RME9652_EMP) {
		snd_iprintf(buffer, "IEC958 emphasis: on\n");
	} else {
		snd_iprintf(buffer, "IEC958 emphasis: off\n");
	}

	if (rme9652->control_register & RME9652_Dolby) {
		snd_iprintf(buffer, "IEC958 Dolby: on\n");
	} else {
		snd_iprintf(buffer, "IEC958 Dolby: off\n");
	}

	i = rme9652_spdif_sample_rate(rme9652);

	if (i < 0) {
		snd_iprintf(buffer,
			    "IEC958 sample rate: error flag set\n");
	} else if (i == 0) {
		snd_iprintf(buffer, "IEC958 sample rate: undetermined\n");
	} else {
		snd_iprintf(buffer, "IEC958 sample rate: %d\n", i);
	}

	snd_iprintf(buffer, "\n");

	snd_iprintf(buffer, "ADAT Sample rate: %dHz\n",
		    rme9652_adat_sample_rate(rme9652));

	/* Sync Check */

	x = status & RME9652_sync_0;
	if (status & RME9652_lock_0) {
		snd_iprintf(buffer, "ADAT1: %s\n", x ? "Sync" : "Lock");
	} else {
		snd_iprintf(buffer, "ADAT1: No Lock\n");
	}

	x = status & RME9652_sync_1;
	if (status & RME9652_lock_1) {
		snd_iprintf(buffer, "ADAT2: %s\n", x ? "Sync" : "Lock");
	} else {
		snd_iprintf(buffer, "ADAT2: No Lock\n");
	}

	x = status & RME9652_sync_2;
	if (status & RME9652_lock_2) {
		snd_iprintf(buffer, "ADAT3: %s\n", x ? "Sync" : "Lock");
	} else {
		snd_iprintf(buffer, "ADAT3: No Lock\n");
	}

	snd_iprintf(buffer, "\n");

	snd_iprintf(buffer, "Timecode signal: %s\n",
		    (status & RME9652_tc_valid) ? "yes" : "no");

	/* thru modes */

	snd_iprintf(buffer, "Punch Status:\n\n");

	for (i = 0; i < rme9652->ss_channels; i++) {
		if (thru_bits & (1 << i)) {
			snd_iprintf(buffer, "%2d:  on ", i + 1);
		} else {
			snd_iprintf(buffer, "%2d: off ", i + 1);
		}

		if (((i + 1) % 8) == 0) {
			snd_iprintf(buffer, "\n");
		}
	}

	snd_iprintf(buffer, "\n");
}

static void __devinit snd_rme9652_proc_init(struct snd_rme9652 *rme9652)
{
	struct snd_info_entry *entry;

	if (! snd_card_proc_new(rme9652->card, "rme9652", &entry))
		snd_info_set_text_ops(entry, rme9652, snd_rme9652_proc_read);
}

static void snd_rme9652_free_buffers(struct snd_rme9652 *rme9652)
{
	snd_hammerfall_free_buffer(&rme9652->capture_dma_buf, rme9652->pci);
	snd_hammerfall_free_buffer(&rme9652->playback_dma_buf, rme9652->pci);
}

static int snd_rme9652_free(struct snd_rme9652 *rme9652)
{
	if (rme9652->irq >= 0)
		rme9652_stop(rme9652);
	snd_rme9652_free_buffers(rme9652);

	if (rme9652->irq >= 0)
		free_irq(rme9652->irq, (void *)rme9652);
	if (rme9652->iobase)
		iounmap(rme9652->iobase);
	if (rme9652->port)
		pci_release_regions(rme9652->pci);

	pci_disable_device(rme9652->pci);
	return 0;
}

static int __devinit snd_rme9652_initialize_memory(struct snd_rme9652 *rme9652)
{
	unsigned long pb_bus, cb_bus;

	if (snd_hammerfall_get_buffer(rme9652->pci, &rme9652->capture_dma_buf, RME9652_DMA_AREA_BYTES) < 0 ||
	    snd_hammerfall_get_buffer(rme9652->pci, &rme9652->playback_dma_buf, RME9652_DMA_AREA_BYTES) < 0) {
		if (rme9652->capture_dma_buf.area)
			snd_dma_free_pages(&rme9652->capture_dma_buf);
		printk(KERN_ERR "%s: no buffers available\n", rme9652->card_name);
		return -ENOMEM;
	}

	/* Align to bus-space 64K boundary */

	cb_bus = ALIGN(rme9652->capture_dma_buf.addr, 0x10000ul);
	pb_bus = ALIGN(rme9652->playback_dma_buf.addr, 0x10000ul);

	/* Tell the card where it is */

	rme9652_write(rme9652, RME9652_rec_buffer, cb_bus);
	rme9652_write(rme9652, RME9652_play_buffer, pb_bus);

	rme9652->capture_buffer = rme9652->capture_dma_buf.area + (cb_bus - rme9652->capture_dma_buf.addr);
	rme9652->playback_buffer = rme9652->playback_dma_buf.area + (pb_bus - rme9652->playback_dma_buf.addr);

	return 0;
}

static void snd_rme9652_set_defaults(struct snd_rme9652 *rme9652)
{
	unsigned int k;

	/* ASSUMPTION: rme9652->lock is either held, or
	   there is no need to hold it (e.g. during module
	   initialization).
	 */

	/* set defaults:

	   SPDIF Input via Coax 
	   autosync clock mode
	   maximum latency (7 = 8192 samples, 64Kbyte buffer,
	   which implies 2 4096 sample, 32Kbyte periods).
	   
	   if rev 1.5, initialize the S/PDIF receiver.

	 */

	rme9652->control_register =
	    RME9652_inp_0 | rme9652_encode_latency(7);

	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);

	rme9652_reset_hw_pointer(rme9652);
	rme9652_compute_period_size(rme9652);

	/* default: thru off for all channels */

	for (k = 0; k < RME9652_NCHANNELS; ++k)
		rme9652_write(rme9652, RME9652_thru_base + k * 4, 0);

	rme9652->thru_bits = 0;
	rme9652->passthru = 0;

	/* set a default rate so that the channel map is set up */

	rme9652_set_rate(rme9652, 48000);
}

static irqreturn_t snd_rme9652_interrupt(int irq, void *dev_id)
{
	struct snd_rme9652 *rme9652 = (struct snd_rme9652 *) dev_id;

	if (!(rme9652_read(rme9652, RME9652_status_register) & RME9652_IRQ)) {
		return IRQ_NONE;
	}

	rme9652_write(rme9652, RME9652_irq_clear, 0);

	if (rme9652->capture_substream) {
		snd_pcm_period_elapsed(rme9652->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
	}

	if (rme9652->playback_substream) {
		snd_pcm_period_elapsed(rme9652->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream);
	}
	return IRQ_HANDLED;
}

static snd_pcm_uframes_t snd_rme9652_hw_pointer(struct snd_pcm_substream *substream)
{
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
	return rme9652_hw_pointer(rme9652);
}

static char *rme9652_channel_buffer_location(struct snd_rme9652 *rme9652,
					     int stream,
					     int channel)

{
	int mapped_channel;

	if (snd_BUG_ON(channel < 0 || channel >= RME9652_NCHANNELS))
		return NULL;
        
	if ((mapped_channel = rme9652->channel_map[channel]) < 0) {
		return NULL;
	}
	
	if (stream == SNDRV_PCM_STREAM_CAPTURE) {
		return rme9652->capture_buffer +
			(mapped_channel * RME9652_CHANNEL_BUFFER_BYTES);
	} else {
		return rme9652->playback_buffer +
			(mapped_channel * RME9652_CHANNEL_BUFFER_BYTES);
	}
}

static int snd_rme9652_playback_copy(struct snd_pcm_substream *substream, int channel,
				     snd_pcm_uframes_t pos, void __user *src, snd_pcm_uframes_t count)
{
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
	char *channel_buf;

	if (snd_BUG_ON(pos + count > RME9652_CHANNEL_BUFFER_BYTES / 4))
		return -EINVAL;

	channel_buf = rme9652_channel_buffer_location (rme9652,
						       substream->pstr->stream,
						       channel);
	if (snd_BUG_ON(!channel_buf))
		return -EIO;
	if (copy_from_user(channel_buf + pos * 4, src, count * 4))
		return -EFAULT;
	return count;
}

static int snd_rme9652_capture_copy(struct snd_pcm_substream *substream, int channel,
				    snd_pcm_uframes_t pos, void __user *dst, snd_pcm_uframes_t count)
{
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
	char *channel_buf;

	if (snd_BUG_ON(pos + count > RME9652_CHANNEL_BUFFER_BYTES / 4))
		return -EINVAL;

	channel_buf = rme9652_channel_buffer_location (rme9652,
						       substream->pstr->stream,
						       channel);
	if (snd_BUG_ON(!channel_buf))
		return -EIO;
	if (copy_to_user(dst, channel_buf + pos * 4, count * 4))
		return -EFAULT;
	return count;
}

static int snd_rme9652_hw_silence(struct snd_pcm_substream *substream, int channel,
				  snd_pcm_uframes_t pos, snd_pcm_uframes_t count)
{
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
	char *channel_buf;

	channel_buf = rme9652_channel_buffer_location (rme9652,
						       substream->pstr->stream,
						       channel);
	if (snd_BUG_ON(!channel_buf))
		return -EIO;
	memset(channel_buf + pos * 4, 0, count * 4);
	return count;
}

static int snd_rme9652_reset(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
	struct snd_pcm_substream *other;
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		other = rme9652->capture_substream;
	else
		other = rme9652->playback_substream;
	if (rme9652->running)
		runtime->status->hw_ptr = rme9652_hw_pointer(rme9652);
	else
		runtime->status->hw_ptr = 0;
	if (other) {
		struct snd_pcm_substream *s;
		struct snd_pcm_runtime *oruntime = other->runtime;
		snd_pcm_group_for_each_entry(s, substream) {
			if (s == other) {
				oruntime->status->hw_ptr = runtime->status->hw_ptr;
				break;
			}
		}
	}
	return 0;
}

static int snd_rme9652_hw_params(struct snd_pcm_substream *substream,
				 struct snd_pcm_hw_params *params)
{
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
	int err;
	pid_t this_pid;
	pid_t other_pid;

	spin_lock_irq(&rme9652->lock);

	if (substream->pstr->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		rme9652->control_register &= ~(RME9652_PRO | RME9652_Dolby | RME9652_EMP);
		rme9652_write(rme9652, RME9652_control_register, rme9652->control_register |= rme9652->creg_spdif_stream);
		this_pid = rme9652->playback_pid;
		other_pid = rme9652->capture_pid;
	} else {
		this_pid = rme9652->capture_pid;
		other_pid = rme9652->playback_pid;
	}

	if ((other_pid > 0) && (this_pid != other_pid)) {

		/* The other stream is open, and not by the same
		   task as this one. Make sure that the parameters
		   that matter are the same.
		 */

		if ((int)params_rate(params) !=
		    rme9652_adat_sample_rate(rme9652)) {
			spin_unlock_irq(&rme9652->lock);
			_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_RATE);
			return -EBUSY;
		}

		if (params_period_size(params) != rme9652->period_bytes / 4) {
			spin_unlock_irq(&rme9652->lock);
			_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
			return -EBUSY;
		}

		/* We're fine. */

		spin_unlock_irq(&rme9652->lock);
 		return 0;

	} else {
		spin_unlock_irq(&rme9652->lock);
	}

	/* how to make sure that the rate matches an externally-set one ?
	 */

	if ((err = rme9652_set_rate(rme9652, params_rate(params))) < 0) {
		_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_RATE);
		return err;
	}

	if ((err = rme9652_set_interrupt_interval(rme9652, params_period_size(params))) < 0) {
		_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
		return err;
	}

	return 0;
}

static int snd_rme9652_channel_info(struct snd_pcm_substream *substream,
				    struct snd_pcm_channel_info *info)
{
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
	int chn;

	if (snd_BUG_ON(info->channel >= RME9652_NCHANNELS))
		return -EINVAL;

	if ((chn = rme9652->channel_map[info->channel]) < 0) {
		return -EINVAL;
	}

	info->offset = chn * RME9652_CHANNEL_BUFFER_BYTES;
	info->first = 0;
	info->step = 32;
	return 0;
}

static int snd_rme9652_ioctl(struct snd_pcm_substream *substream,
			     unsigned int cmd, void *arg)
{
	switch (cmd) {
	case SNDRV_PCM_IOCTL1_RESET:
	{
		return snd_rme9652_reset(substream);
	}
	case SNDRV_PCM_IOCTL1_CHANNEL_INFO:
	{
		struct snd_pcm_channel_info *info = arg;
		return snd_rme9652_channel_info(substream, info);
	}
	default:
		break;
	}

	return snd_pcm_lib_ioctl(substream, cmd, arg);
}

static void rme9652_silence_playback(struct snd_rme9652 *rme9652)
{
	memset(rme9652->playback_buffer, 0, RME9652_DMA_AREA_BYTES);
}

static int snd_rme9652_trigger(struct snd_pcm_substream *substream,
			       int cmd)
{
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
	struct snd_pcm_substream *other;
	int running;
	spin_lock(&rme9652->lock);
	running = rme9652->running;
	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
		running |= 1 << substream->stream;
		break;
	case SNDRV_PCM_TRIGGER_STOP:
		running &= ~(1 << substream->stream);
		break;
	default:
		snd_BUG();
		spin_unlock(&rme9652->lock);
		return -EINVAL;
	}
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		other = rme9652->capture_substream;
	else
		other = rme9652->playback_substream;

	if (other) {
		struct snd_pcm_substream *s;
		snd_pcm_group_for_each_entry(s, substream) {
			if (s == other) {
				snd_pcm_trigger_done(s, substream);
				if (cmd == SNDRV_PCM_TRIGGER_START)
					running |= 1 << s->stream;
				else
					running &= ~(1 << s->stream);
				goto _ok;
			}
		}
		if (cmd == SNDRV_PCM_TRIGGER_START) {
			if (!(running & (1 << SNDRV_PCM_STREAM_PLAYBACK)) &&
			    substream->stream == SNDRV_PCM_STREAM_CAPTURE)
				rme9652_silence_playback(rme9652);
		} else {
			if (running &&
			    substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
				rme9652_silence_playback(rme9652);
		}
	} else {
		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) 
			rme9652_silence_playback(rme9652);
	}
 _ok:
	snd_pcm_trigger_done(substream, substream);
	if (!rme9652->running && running)
		rme9652_start(rme9652);
	else if (rme9652->running && !running)
		rme9652_stop(rme9652);
	rme9652->running = running;
	spin_unlock(&rme9652->lock);

	return 0;
}

static int snd_rme9652_prepare(struct snd_pcm_substream *substream)
{
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
	unsigned long flags;
	int result = 0;

	spin_lock_irqsave(&rme9652->lock, flags);
	if (!rme9652->running)
		rme9652_reset_hw_pointer(rme9652);
	spin_unlock_irqrestore(&rme9652->lock, flags);
	return result;
}

static struct snd_pcm_hardware snd_rme9652_playback_subinfo =
{
	.info =			(SNDRV_PCM_INFO_MMAP |
				 SNDRV_PCM_INFO_MMAP_VALID |
				 SNDRV_PCM_INFO_NONINTERLEAVED |
				 SNDRV_PCM_INFO_SYNC_START |
				 SNDRV_PCM_INFO_DOUBLE),
	.formats =		SNDRV_PCM_FMTBIT_S32_LE,
	.rates =		(SNDRV_PCM_RATE_44100 | 
				 SNDRV_PCM_RATE_48000 | 
				 SNDRV_PCM_RATE_88200 | 
				 SNDRV_PCM_RATE_96000),
	.rate_min =		44100,
	.rate_max =		96000,
	.channels_min =		10,
	.channels_max =		26,
	.buffer_bytes_max =	RME9652_CHANNEL_BUFFER_BYTES * 26,
	.period_bytes_min =	(64 * 4) * 10,
	.period_bytes_max =	(8192 * 4) * 26,
	.periods_min =		2,
	.periods_max =		2,
	.fifo_size =		0,
};

static struct snd_pcm_hardware snd_rme9652_capture_subinfo =
{
	.info =			(SNDRV_PCM_INFO_MMAP |
				 SNDRV_PCM_INFO_MMAP_VALID |
				 SNDRV_PCM_INFO_NONINTERLEAVED |
				 SNDRV_PCM_INFO_SYNC_START),
	.formats =		SNDRV_PCM_FMTBIT_S32_LE,
	.rates =		(SNDRV_PCM_RATE_44100 | 
				 SNDRV_PCM_RATE_48000 | 
				 SNDRV_PCM_RATE_88200 | 
				 SNDRV_PCM_RATE_96000),
	.rate_min =		44100,
	.rate_max =		96000,
	.channels_min =		10,
	.channels_max =		26,
	.buffer_bytes_max =	RME9652_CHANNEL_BUFFER_BYTES *26,
	.period_bytes_min =	(64 * 4) * 10,
	.period_bytes_max =	(8192 * 4) * 26,
	.periods_min =		2,
	.periods_max =		2,
	.fifo_size =		0,
};

static unsigned int period_sizes[] = { 64, 128, 256, 512, 1024, 2048, 4096, 8192 };

static struct snd_pcm_hw_constraint_list hw_constraints_period_sizes = {
	.count = ARRAY_SIZE(period_sizes),
	.list = period_sizes,
	.mask = 0
};

static int snd_rme9652_hw_rule_channels(struct snd_pcm_hw_params *params,
					struct snd_pcm_hw_rule *rule)
{
	struct snd_rme9652 *rme9652 = rule->private;
	struct snd_interval *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
	unsigned int list[2] = { rme9652->ds_channels, rme9652->ss_channels };
	return snd_interval_list(c, 2, list, 0);
}

static int snd_rme9652_hw_rule_channels_rate(struct snd_pcm_hw_params *params,
					     struct snd_pcm_hw_rule *rule)
{
	struct snd_rme9652 *rme9652 = rule->private;
	struct snd_interval *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
	struct snd_interval *r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
	if (r->min > 48000) {
		struct snd_interval t = {
			.min = rme9652->ds_channels,
			.max = rme9652->ds_channels,
			.integer = 1,
		};
		return snd_interval_refine(c, &t);
	} else if (r->max < 88200) {
		struct snd_interval t = {
			.min = rme9652->ss_channels,
			.max = rme9652->ss_channels,
			.integer = 1,
		};
		return snd_interval_refine(c, &t);
	}
	return 0;
}

static int snd_rme9652_hw_rule_rate_channels(struct snd_pcm_hw_params *params,
					     struct snd_pcm_hw_rule *rule)
{
	struct snd_rme9652 *rme9652 = rule->private;
	struct snd_interval *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
	struct snd_interval *r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
	if (c->min >= rme9652->ss_channels) {
		struct snd_interval t = {
			.min = 44100,
			.max = 48000,
			.integer = 1,
		};
		return snd_interval_refine(r, &t);
	} else if (c->max <= rme9652->ds_channels) {
		struct snd_interval t = {
			.min = 88200,
			.max = 96000,
			.integer = 1,
		};
		return snd_interval_refine(r, &t);
	}
	return 0;
}

static int snd_rme9652_playback_open(struct snd_pcm_substream *substream)
{
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;

	spin_lock_irq(&rme9652->lock);

	snd_pcm_set_sync(substream);

        runtime->hw = snd_rme9652_playback_subinfo;
	runtime->dma_area = rme9652->playback_buffer;
	runtime->dma_bytes = RME9652_DMA_AREA_BYTES;

	if (rme9652->capture_substream == NULL) {
		rme9652_stop(rme9652);
		rme9652_set_thru(rme9652, -1, 0);
	}

	rme9652->playback_pid = current->pid;
	rme9652->playback_substream = substream;

	spin_unlock_irq(&rme9652->lock);

	snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hw_constraints_period_sizes);
	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
			     snd_rme9652_hw_rule_channels, rme9652,
			     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
			     snd_rme9652_hw_rule_channels_rate, rme9652,
			     SNDRV_PCM_HW_PARAM_RATE, -1);
	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
			     snd_rme9652_hw_rule_rate_channels, rme9652,
			     SNDRV_PCM_HW_PARAM_CHANNELS, -1);

	rme9652->creg_spdif_stream = rme9652->creg_spdif;
	rme9652->spdif_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
	snd_ctl_notify(rme9652->card, SNDRV_CTL_EVENT_MASK_VALUE |
		       SNDRV_CTL_EVENT_MASK_INFO, &rme9652->spdif_ctl->id);
	return 0;
}

static int snd_rme9652_playback_release(struct snd_pcm_substream *substream)
{
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);

	spin_lock_irq(&rme9652->lock);

	rme9652->playback_pid = -1;
	rme9652->playback_substream = NULL;

	spin_unlock_irq(&rme9652->lock);

	rme9652->spdif_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
	snd_ctl_notify(rme9652->card, SNDRV_CTL_EVENT_MASK_VALUE |
		       SNDRV_CTL_EVENT_MASK_INFO, &rme9652->spdif_ctl->id);
	return 0;
}


static int snd_rme9652_capture_open(struct snd_pcm_substream *substream)
{
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;

	spin_lock_irq(&rme9652->lock);

	snd_pcm_set_sync(substream);

	runtime->hw = snd_rme9652_capture_subinfo;
	runtime->dma_area = rme9652->capture_buffer;
	runtime->dma_bytes = RME9652_DMA_AREA_BYTES;

	if (rme9652->playback_substream == NULL) {
		rme9652_stop(rme9652);
		rme9652_set_thru(rme9652, -1, 0);
	}

	rme9652->capture_pid = current->pid;
	rme9652->capture_substream = substream;

	spin_unlock_irq(&rme9652->lock);

	snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hw_constraints_period_sizes);
	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
			     snd_rme9652_hw_rule_channels, rme9652,
			     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
			     snd_rme9652_hw_rule_channels_rate, rme9652,
			     SNDRV_PCM_HW_PARAM_RATE, -1);
	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
			     snd_rme9652_hw_rule_rate_channels, rme9652,
			     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
	return 0;
}

static int snd_rme9652_capture_release(struct snd_pcm_substream *substream)
{
	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);

	spin_lock_irq(&rme9652->lock);

	rme9652->capture_pid = -1;
	rme9652->capture_substream = NULL;

	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static struct snd_pcm_ops snd_rme9652_playback_ops = {
	.open =		snd_rme9652_playback_open,
	.close =	snd_rme9652_playback_release,
	.ioctl =	snd_rme9652_ioctl,
	.hw_params =	snd_rme9652_hw_params,
	.prepare =	snd_rme9652_prepare,
	.trigger =	snd_rme9652_trigger,
	.pointer =	snd_rme9652_hw_pointer,
	.copy =		snd_rme9652_playback_copy,
	.silence =	snd_rme9652_hw_silence,
};

static struct snd_pcm_ops snd_rme9652_capture_ops = {
	.open =		snd_rme9652_capture_open,
	.close =	snd_rme9652_capture_release,
	.ioctl =	snd_rme9652_ioctl,
	.hw_params =	snd_rme9652_hw_params,
	.prepare =	snd_rme9652_prepare,
	.trigger =	snd_rme9652_trigger,
	.pointer =	snd_rme9652_hw_pointer,
	.copy =		snd_rme9652_capture_copy,
};

static int __devinit snd_rme9652_create_pcm(struct snd_card *card,
					 struct snd_rme9652 *rme9652)
{
	struct snd_pcm *pcm;
	int err;

	if ((err = snd_pcm_new(card,
			       rme9652->card_name,
			       0, 1, 1, &pcm)) < 0) {
		return err;
	}

	rme9652->pcm = pcm;
	pcm->private_data = rme9652;
	strcpy(pcm->name, rme9652->card_name);

	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme9652_playback_ops);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme9652_capture_ops);

	pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;

	return 0;
}

static int __devinit snd_rme9652_create(struct snd_card *card,
				     struct snd_rme9652 *rme9652,
				     int precise_ptr)
{
	struct pci_dev *pci = rme9652->pci;
	int err;
	int status;
	unsigned short rev;

	rme9652->irq = -1;
	rme9652->card = card;

	pci_read_config_word(rme9652->pci, PCI_CLASS_REVISION, &rev);

	switch (rev & 0xff) {
	case 3:
	case 4:
	case 8:
	case 9:
		break;

	default:
		/* who knows? */
		return -ENODEV;
	}

	if ((err = pci_enable_device(pci)) < 0)
		return err;

	spin_lock_init(&rme9652->lock);

	if ((err = pci_request_regions(pci, "rme9652")) < 0)
		return err;
	rme9652->port = pci_resource_start(pci, 0);
	rme9652->iobase = ioremap_nocache(rme9652->port, RME9652_IO_EXTENT);
	if (rme9652->iobase == NULL) {
		snd_printk(KERN_ERR "unable to remap region 0x%lx-0x%lx\n", rme9652->port, rme9652->port + RME9652_IO_EXTENT - 1);
		return -EBUSY;
	}
	
	if (request_irq(pci->irq, snd_rme9652_interrupt, IRQF_SHARED,
			"rme9652", rme9652)) {
		snd_printk(KERN_ERR "unable to request IRQ %d\n", pci->irq);
		return -EBUSY;
	}
	rme9652->irq = pci->irq;
	rme9652->precise_ptr = precise_ptr;

	/* Determine the h/w rev level of the card. This seems like
	   a particularly kludgy way to encode it, but its what RME
	   chose to do, so we follow them ...
	*/

	status = rme9652_read(rme9652, RME9652_status_register);
	if (rme9652_decode_spdif_rate(status&RME9652_F) == 1) {
		rme9652->hw_rev = 15;
	} else {
		rme9652->hw_rev = 11;
	}

	/* Differentiate between the standard Hammerfall, and the
	   "Light", which does not have the expansion board. This
	   method comes from information received from Mathhias
	   Clausen at RME. Display the EEPROM and h/w revID where
	   relevant.  
	*/

	switch (rev) {
	case 8: /* original eprom */
		strcpy(card->driver, "RME9636");
		if (rme9652->hw_rev == 15) {
			rme9652->card_name = "RME Digi9636 (Rev 1.5)";
		} else {
			rme9652->card_name = "RME Digi9636";
		}
		rme9652->ss_channels = RME9636_NCHANNELS;
		break;
	case 9: /* W36_G EPROM */
		strcpy(card->driver, "RME9636");
		rme9652->card_name = "RME Digi9636 (Rev G)";
		rme9652->ss_channels = RME9636_NCHANNELS;
		break;
	case 4: /* W52_G EPROM */
		strcpy(card->driver, "RME9652");
		rme9652->card_name = "RME Digi9652 (Rev G)";
		rme9652->ss_channels = RME9652_NCHANNELS;
		break;
	case 3: /* original eprom */
		strcpy(card->driver, "RME9652");
		if (rme9652->hw_rev == 15) {
			rme9652->card_name = "RME Digi9652 (Rev 1.5)";
		} else {
			rme9652->card_name = "RME Digi9652";
		}
		rme9652->ss_channels = RME9652_NCHANNELS;
		break;
	}

	rme9652->ds_channels = (rme9652->ss_channels - 2) / 2 + 2;

	pci_set_master(rme9652->pci);

	if ((err = snd_rme9652_initialize_memory(rme9652)) < 0) {
		return err;
	}

	if ((err = snd_rme9652_create_pcm(card, rme9652)) < 0) {
		return err;
	}

	if ((err = snd_rme9652_create_controls(card, rme9652)) < 0) {
		return err;
	}

	snd_rme9652_proc_init(rme9652);

	rme9652->last_spdif_sample_rate = -1;
	rme9652->last_adat_sample_rate = -1;
	rme9652->playback_pid = -1;
	rme9652->capture_pid = -1;
	rme9652->capture_substream = NULL;
	rme9652->playback_substream = NULL;

	snd_rme9652_set_defaults(rme9652);

	if (rme9652->hw_rev == 15) {
		rme9652_initialize_spdif_receiver (rme9652);
	}

	return 0;
}

static void snd_rme9652_card_free(struct snd_card *card)
{
	struct snd_rme9652 *rme9652 = (struct snd_rme9652 *) card->private_data;

	if (rme9652)
		snd_rme9652_free(rme9652);
}

static int __devinit snd_rme9652_probe(struct pci_dev *pci,
				       const struct pci_device_id *pci_id)
{
	static int dev;
	struct snd_rme9652 *rme9652;
	struct snd_card *card;
	int err;

	if (dev >= SNDRV_CARDS)
		return -ENODEV;
	if (!enable[dev]) {
		dev++;
		return -ENOENT;
	}

	err = snd_card_create(index[dev], id[dev], THIS_MODULE,
			      sizeof(struct snd_rme9652), &card);

	if (err < 0)
		return err;

	rme9652 = (struct snd_rme9652 *) card->private_data;
	card->private_free = snd_rme9652_card_free;
	rme9652->dev = dev;
	rme9652->pci = pci;
	snd_card_set_dev(card, &pci->dev);

	if ((err = snd_rme9652_create(card, rme9652, precise_ptr[dev])) < 0) {
		snd_card_free(card);
		return err;
	}

	strcpy(card->shortname, rme9652->card_name);

	sprintf(card->longname, "%s at 0x%lx, irq %d",
		card->shortname, rme9652->port, rme9652->irq);

	
	if ((err = snd_card_register(card)) < 0) {
		snd_card_free(card);
		return err;
	}
	pci_set_drvdata(pci, card);
	dev++;
	return 0;
}

static void __devexit snd_rme9652_remove(struct pci_dev *pci)
{
	snd_card_free(pci_get_drvdata(pci));
	pci_set_drvdata(pci, NULL);
}

static struct pci_driver driver = {
	.name	  = KBUILD_MODNAME,
	.id_table = snd_rme9652_ids,
	.probe	  = snd_rme9652_probe,
	.remove	  = __devexit_p(snd_rme9652_remove),
};

static int __init alsa_card_hammerfall_init(void)
{
	return pci_register_driver(&driver);
}

static void __exit alsa_card_hammerfall_exit(void)
{
	pci_unregister_driver(&driver);
}

module_init(alsa_card_hammerfall_init)
module_exit(alsa_card_hammerfall_exit)