summaryrefslogtreecommitdiffstats
path: root/sound/usb/mixer_quirks.c
blob: 8c9bf4b7aaf0e003db413347efe1ca2ae09053fe (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
/*
 *   USB Audio Driver for ALSA
 *
 *   Quirks and vendor-specific extensions for mixer interfaces
 *
 *   Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
 *
 *   Many codes borrowed from audio.c by
 *	    Alan Cox (alan@lxorguk.ukuu.org.uk)
 *	    Thomas Sailer (sailer@ife.ee.ethz.ch)
 *
 *   Audio Advantage Micro II support added by:
 *	    Przemek Rudy (prudy1@o2.pl)
 *
 *   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/init.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/usb/audio.h>

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

#include "usbaudio.h"
#include "mixer.h"
#include "mixer_quirks.h"
#include "helper.h"

extern struct snd_kcontrol_new *snd_usb_feature_unit_ctl;

struct std_mono_table {
	unsigned int unitid, control, cmask;
	int val_type;
	const char *name;
	snd_kcontrol_tlv_rw_t *tlv_callback;
};

/* private_free callback */
static void usb_mixer_elem_free(struct snd_kcontrol *kctl)
{
	kfree(kctl->private_data);
	kctl->private_data = NULL;
}

/* This function allows for the creation of standard UAC controls.
 * See the quirks for M-Audio FTUs or Ebox-44.
 * If you don't want to set a TLV callback pass NULL.
 *
 * Since there doesn't seem to be a devices that needs a multichannel
 * version, we keep it mono for simplicity.
 */
static int snd_create_std_mono_ctl_offset(struct usb_mixer_interface *mixer,
				unsigned int unitid,
				unsigned int control,
				unsigned int cmask,
				int val_type,
				unsigned int idx_off,
				const char *name,
				snd_kcontrol_tlv_rw_t *tlv_callback)
{
	int err;
	struct usb_mixer_elem_info *cval;
	struct snd_kcontrol *kctl;

	cval = kzalloc(sizeof(*cval), GFP_KERNEL);
	if (!cval)
		return -ENOMEM;

	cval->id = unitid;
	cval->mixer = mixer;
	cval->val_type = val_type;
	cval->channels = 1;
	cval->control = control;
	cval->cmask = cmask;
	cval->idx_off = idx_off;

	/* get_min_max() is called only for integer volumes later,
	 * so provide a short-cut for booleans */
	cval->min = 0;
	cval->max = 1;
	cval->res = 0;
	cval->dBmin = 0;
	cval->dBmax = 0;

	/* Create control */
	kctl = snd_ctl_new1(snd_usb_feature_unit_ctl, cval);
	if (!kctl) {
		kfree(cval);
		return -ENOMEM;
	}

	/* Set name */
	snprintf(kctl->id.name, sizeof(kctl->id.name), name);
	kctl->private_free = usb_mixer_elem_free;

	/* set TLV */
	if (tlv_callback) {
		kctl->tlv.c = tlv_callback;
		kctl->vd[0].access |=
			SNDRV_CTL_ELEM_ACCESS_TLV_READ |
			SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
	}
	/* Add control to mixer */
	err = snd_usb_mixer_add_control(mixer, kctl);
	if (err < 0)
		return err;

	return 0;
}

static int snd_create_std_mono_ctl(struct usb_mixer_interface *mixer,
				unsigned int unitid,
				unsigned int control,
				unsigned int cmask,
				int val_type,
				const char *name,
				snd_kcontrol_tlv_rw_t *tlv_callback)
{
	return snd_create_std_mono_ctl_offset(mixer, unitid, control, cmask,
		val_type, 0 /* Offset */, name, tlv_callback);
}

/*
 * Create a set of standard UAC controls from a table
 */
static int snd_create_std_mono_table(struct usb_mixer_interface *mixer,
				struct std_mono_table *t)
{
	int err;

	while (t->name != NULL) {
		err = snd_create_std_mono_ctl(mixer, t->unitid, t->control,
				t->cmask, t->val_type, t->name, t->tlv_callback);
		if (err < 0)
			return err;
		t++;
	}

	return 0;
}

/*
 * Sound Blaster remote control configuration
 *
 * format of remote control data:
 * Extigy:       xx 00
 * Audigy 2 NX:  06 80 xx 00 00 00
 * Live! 24-bit: 06 80 xx yy 22 83
 */
static const struct rc_config {
	u32 usb_id;
	u8  offset;
	u8  length;
	u8  packet_length;
	u8  min_packet_length; /* minimum accepted length of the URB result */
	u8  mute_mixer_id;
	u32 mute_code;
} rc_configs[] = {
	{ USB_ID(0x041e, 0x3000), 0, 1, 2, 1,  18, 0x0013 }, /* Extigy       */
	{ USB_ID(0x041e, 0x3020), 2, 1, 6, 6,  18, 0x0013 }, /* Audigy 2 NX  */
	{ USB_ID(0x041e, 0x3040), 2, 2, 6, 6,  2,  0x6e91 }, /* Live! 24-bit */
	{ USB_ID(0x041e, 0x3042), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 */
	{ USB_ID(0x041e, 0x30df), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
	{ USB_ID(0x041e, 0x3048), 2, 2, 6, 6,  2,  0x6e91 }, /* Toshiba SB0500 */
};

static void snd_usb_soundblaster_remote_complete(struct urb *urb)
{
	struct usb_mixer_interface *mixer = urb->context;
	const struct rc_config *rc = mixer->rc_cfg;
	u32 code;

	if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
		return;

	code = mixer->rc_buffer[rc->offset];
	if (rc->length == 2)
		code |= mixer->rc_buffer[rc->offset + 1] << 8;

	/* the Mute button actually changes the mixer control */
	if (code == rc->mute_code)
		snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
	mixer->rc_code = code;
	wmb();
	wake_up(&mixer->rc_waitq);
}

static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
				     long count, loff_t *offset)
{
	struct usb_mixer_interface *mixer = hw->private_data;
	int err;
	u32 rc_code;

	if (count != 1 && count != 4)
		return -EINVAL;
	err = wait_event_interruptible(mixer->rc_waitq,
				       (rc_code = xchg(&mixer->rc_code, 0)) != 0);
	if (err == 0) {
		if (count == 1)
			err = put_user(rc_code, buf);
		else
			err = put_user(rc_code, (u32 __user *)buf);
	}
	return err < 0 ? err : count;
}

static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
					    poll_table *wait)
{
	struct usb_mixer_interface *mixer = hw->private_data;

	poll_wait(file, &mixer->rc_waitq, wait);
	return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
}

static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
{
	struct snd_hwdep *hwdep;
	int err, len, i;

	for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
		if (rc_configs[i].usb_id == mixer->chip->usb_id)
			break;
	if (i >= ARRAY_SIZE(rc_configs))
		return 0;
	mixer->rc_cfg = &rc_configs[i];

	len = mixer->rc_cfg->packet_length;

	init_waitqueue_head(&mixer->rc_waitq);
	err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
	if (err < 0)
		return err;
	snprintf(hwdep->name, sizeof(hwdep->name),
		 "%s remote control", mixer->chip->card->shortname);
	hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
	hwdep->private_data = mixer;
	hwdep->ops.read = snd_usb_sbrc_hwdep_read;
	hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
	hwdep->exclusive = 1;

	mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!mixer->rc_urb)
		return -ENOMEM;
	mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
	if (!mixer->rc_setup_packet) {
		usb_free_urb(mixer->rc_urb);
		mixer->rc_urb = NULL;
		return -ENOMEM;
	}
	mixer->rc_setup_packet->bRequestType =
		USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
	mixer->rc_setup_packet->bRequest = UAC_GET_MEM;
	mixer->rc_setup_packet->wValue = cpu_to_le16(0);
	mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
	mixer->rc_setup_packet->wLength = cpu_to_le16(len);
	usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
			     usb_rcvctrlpipe(mixer->chip->dev, 0),
			     (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
			     snd_usb_soundblaster_remote_complete, mixer);
	return 0;
}

#define snd_audigy2nx_led_info		snd_ctl_boolean_mono_info

static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
	int index = kcontrol->private_value;

	ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
	return 0;
}

static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
	int index = kcontrol->private_value;
	int value = ucontrol->value.integer.value[0];
	int err, changed;

	if (value > 1)
		return -EINVAL;
	changed = value != mixer->audigy2nx_leds[index];
	down_read(&mixer->chip->shutdown_rwsem);
	if (mixer->chip->shutdown) {
		err = -ENODEV;
		goto out;
	}
	if (mixer->chip->usb_id == USB_ID(0x041e, 0x3042))
		err = snd_usb_ctl_msg(mixer->chip->dev,
			      usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
			      !value, 0, NULL, 0);
	/* USB X-Fi S51 Pro */
	if (mixer->chip->usb_id == USB_ID(0x041e, 0x30df))
		err = snd_usb_ctl_msg(mixer->chip->dev,
			      usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
			      !value, 0, NULL, 0);
	else
		err = snd_usb_ctl_msg(mixer->chip->dev,
			      usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
			      value, index + 2, NULL, 0);
 out:
	up_read(&mixer->chip->shutdown_rwsem);
	if (err < 0)
		return err;
	mixer->audigy2nx_leds[index] = value;
	return changed;
}

static struct snd_kcontrol_new snd_audigy2nx_controls[] = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "CMSS LED Switch",
		.info = snd_audigy2nx_led_info,
		.get = snd_audigy2nx_led_get,
		.put = snd_audigy2nx_led_put,
		.private_value = 0,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Power LED Switch",
		.info = snd_audigy2nx_led_info,
		.get = snd_audigy2nx_led_get,
		.put = snd_audigy2nx_led_put,
		.private_value = 1,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Dolby Digital LED Switch",
		.info = snd_audigy2nx_led_info,
		.get = snd_audigy2nx_led_get,
		.put = snd_audigy2nx_led_put,
		.private_value = 2,
	},
};

static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
{
	int i, err;

	for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
		/* USB X-Fi S51 doesn't have a CMSS LED */
		if ((mixer->chip->usb_id == USB_ID(0x041e, 0x3042)) && i == 0)
			continue;
		/* USB X-Fi S51 Pro doesn't have one either */
		if ((mixer->chip->usb_id == USB_ID(0x041e, 0x30df)) && i == 0)
			continue;
		if (i > 1 && /* Live24ext has 2 LEDs only */
			(mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
			 mixer->chip->usb_id == USB_ID(0x041e, 0x3042) ||
			 mixer->chip->usb_id == USB_ID(0x041e, 0x30df) ||
			 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
			break; 
		err = snd_ctl_add(mixer->chip->card,
				  snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
		if (err < 0)
			return err;
	}
	mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
	return 0;
}

static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
				    struct snd_info_buffer *buffer)
{
	static const struct sb_jack {
		int unitid;
		const char *name;
	}  jacks_audigy2nx[] = {
		{4,  "dig in "},
		{7,  "line in"},
		{19, "spk out"},
		{20, "hph out"},
		{-1, NULL}
	}, jacks_live24ext[] = {
		{4,  "line in"}, /* &1=Line, &2=Mic*/
		{3,  "hph out"}, /* headphones */
		{0,  "RC     "}, /* last command, 6 bytes see rc_config above */
		{-1, NULL}
	};
	const struct sb_jack *jacks;
	struct usb_mixer_interface *mixer = entry->private_data;
	int i, err;
	u8 buf[3];

	snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
	if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
		jacks = jacks_audigy2nx;
	else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
		 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
		jacks = jacks_live24ext;
	else
		return;

	for (i = 0; jacks[i].name; ++i) {
		snd_iprintf(buffer, "%s: ", jacks[i].name);
		down_read(&mixer->chip->shutdown_rwsem);
		if (mixer->chip->shutdown)
			err = 0;
		else
			err = snd_usb_ctl_msg(mixer->chip->dev,
				      usb_rcvctrlpipe(mixer->chip->dev, 0),
				      UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
				      USB_RECIP_INTERFACE, 0,
				      jacks[i].unitid << 8, buf, 3);
		up_read(&mixer->chip->shutdown_rwsem);
		if (err == 3 && (buf[0] == 3 || buf[0] == 6))
			snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
		else
			snd_iprintf(buffer, "?\n");
	}
}

/* EMU0204 */
static int snd_emu0204_ch_switch_info(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_info *uinfo)
{
	static const char *texts[2] = {"1/2",
				       "3/4"
	};

	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_emu0204_ch_switch_get(struct snd_kcontrol *kcontrol,
				     struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.enumerated.item[0] = kcontrol->private_value;
	return 0;
}

static int snd_emu0204_ch_switch_put(struct snd_kcontrol *kcontrol,
				     struct snd_ctl_elem_value *ucontrol)
{
	struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
	unsigned int value = ucontrol->value.enumerated.item[0];
	int err, changed;
	unsigned char buf[2];

	if (value > 1)
		return -EINVAL;

	buf[0] = 0x01;
	buf[1] = value ? 0x02 : 0x01;

	changed = value != kcontrol->private_value;
	down_read(&mixer->chip->shutdown_rwsem);
	if (mixer->chip->shutdown) {
		err = -ENODEV;
		goto out;
	}
	err = snd_usb_ctl_msg(mixer->chip->dev,
		      usb_sndctrlpipe(mixer->chip->dev, 0), UAC_SET_CUR,
		      USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
		      0x0400, 0x0e00, buf, 2);
 out:
	up_read(&mixer->chip->shutdown_rwsem);
	if (err < 0)
		return err;
	kcontrol->private_value = value;
	return changed;
}


static struct snd_kcontrol_new snd_emu0204_controls[] = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Front Jack Channels",
		.info = snd_emu0204_ch_switch_info,
		.get = snd_emu0204_ch_switch_get,
		.put = snd_emu0204_ch_switch_put,
		.private_value = 0,
	},
};

static int snd_emu0204_controls_create(struct usb_mixer_interface *mixer)
{
	int i, err;

	for (i = 0; i < ARRAY_SIZE(snd_emu0204_controls); ++i) {
		err = snd_ctl_add(mixer->chip->card,
			snd_ctl_new1(&snd_emu0204_controls[i], mixer));
		if (err < 0)
			return err;
	}

	return 0;
}
/* ASUS Xonar U1 / U3 controls */

static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_value *ucontrol)
{
	struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);

	ucontrol->value.integer.value[0] = !!(mixer->xonar_u1_status & 0x02);
	return 0;
}

static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_value *ucontrol)
{
	struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
	u8 old_status, new_status;
	int err, changed;

	old_status = mixer->xonar_u1_status;
	if (ucontrol->value.integer.value[0])
		new_status = old_status | 0x02;
	else
		new_status = old_status & ~0x02;
	changed = new_status != old_status;
	down_read(&mixer->chip->shutdown_rwsem);
	if (mixer->chip->shutdown)
		err = -ENODEV;
	else
		err = snd_usb_ctl_msg(mixer->chip->dev,
			      usb_sndctrlpipe(mixer->chip->dev, 0), 0x08,
			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
			      50, 0, &new_status, 1);
	up_read(&mixer->chip->shutdown_rwsem);
	if (err < 0)
		return err;
	mixer->xonar_u1_status = new_status;
	return changed;
}

static struct snd_kcontrol_new snd_xonar_u1_output_switch = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Digital Playback Switch",
	.info = snd_ctl_boolean_mono_info,
	.get = snd_xonar_u1_switch_get,
	.put = snd_xonar_u1_switch_put,
};

static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
{
	int err;

	err = snd_ctl_add(mixer->chip->card,
			  snd_ctl_new1(&snd_xonar_u1_output_switch, mixer));
	if (err < 0)
		return err;
	mixer->xonar_u1_status = 0x05;
	return 0;
}

/* Native Instruments device quirks */

#define _MAKE_NI_CONTROL(bRequest,wIndex) ((bRequest) << 16 | (wIndex))

static int snd_nativeinstruments_control_get(struct snd_kcontrol *kcontrol,
					     struct snd_ctl_elem_value *ucontrol)
{
	struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
	struct usb_device *dev = mixer->chip->dev;
	u8 bRequest = (kcontrol->private_value >> 16) & 0xff;
	u16 wIndex = kcontrol->private_value & 0xffff;
	u8 tmp;
	int ret;

	down_read(&mixer->chip->shutdown_rwsem);
	if (mixer->chip->shutdown)
		ret = -ENODEV;
	else
		ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), bRequest,
				  USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
				  0, wIndex,
				  &tmp, sizeof(tmp));
	up_read(&mixer->chip->shutdown_rwsem);

	if (ret < 0) {
		dev_err(&dev->dev,
			"unable to issue vendor read request (ret = %d)", ret);
		return ret;
	}

	ucontrol->value.integer.value[0] = tmp;

	return 0;
}

static int snd_nativeinstruments_control_put(struct snd_kcontrol *kcontrol,
					     struct snd_ctl_elem_value *ucontrol)
{
	struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
	struct usb_device *dev = mixer->chip->dev;
	u8 bRequest = (kcontrol->private_value >> 16) & 0xff;
	u16 wIndex = kcontrol->private_value & 0xffff;
	u16 wValue = ucontrol->value.integer.value[0];
	int ret;

	down_read(&mixer->chip->shutdown_rwsem);
	if (mixer->chip->shutdown)
		ret = -ENODEV;
	else
		ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), bRequest,
				  USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
				  wValue, wIndex,
				  NULL, 0, 1000);
	up_read(&mixer->chip->shutdown_rwsem);

	if (ret < 0) {
		dev_err(&dev->dev,
			"unable to issue vendor write request (ret = %d)", ret);
		return ret;
	}

	return 0;
}

static struct snd_kcontrol_new snd_nativeinstruments_ta6_mixers[] = {
	{
		.name = "Direct Thru Channel A",
		.private_value = _MAKE_NI_CONTROL(0x01, 0x03),
	},
	{
		.name = "Direct Thru Channel B",
		.private_value = _MAKE_NI_CONTROL(0x01, 0x05),
	},
	{
		.name = "Phono Input Channel A",
		.private_value = _MAKE_NI_CONTROL(0x02, 0x03),
	},
	{
		.name = "Phono Input Channel B",
		.private_value = _MAKE_NI_CONTROL(0x02, 0x05),
	},
};

static struct snd_kcontrol_new snd_nativeinstruments_ta10_mixers[] = {
	{
		.name = "Direct Thru Channel A",
		.private_value = _MAKE_NI_CONTROL(0x01, 0x03),
	},
	{
		.name = "Direct Thru Channel B",
		.private_value = _MAKE_NI_CONTROL(0x01, 0x05),
	},
	{
		.name = "Direct Thru Channel C",
		.private_value = _MAKE_NI_CONTROL(0x01, 0x07),
	},
	{
		.name = "Direct Thru Channel D",
		.private_value = _MAKE_NI_CONTROL(0x01, 0x09),
	},
	{
		.name = "Phono Input Channel A",
		.private_value = _MAKE_NI_CONTROL(0x02, 0x03),
	},
	{
		.name = "Phono Input Channel B",
		.private_value = _MAKE_NI_CONTROL(0x02, 0x05),
	},
	{
		.name = "Phono Input Channel C",
		.private_value = _MAKE_NI_CONTROL(0x02, 0x07),
	},
	{
		.name = "Phono Input Channel D",
		.private_value = _MAKE_NI_CONTROL(0x02, 0x09),
	},
};

static int snd_nativeinstruments_create_mixer(struct usb_mixer_interface *mixer,
					      const struct snd_kcontrol_new *kc,
					      unsigned int count)
{
	int i, err = 0;
	struct snd_kcontrol_new template = {
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
		.get = snd_nativeinstruments_control_get,
		.put = snd_nativeinstruments_control_put,
		.info = snd_ctl_boolean_mono_info,
	};

	for (i = 0; i < count; i++) {
		struct snd_kcontrol *c;

		template.name = kc[i].name;
		template.private_value = kc[i].private_value;

		c = snd_ctl_new1(&template, mixer);
		err = snd_ctl_add(mixer->chip->card, c);

		if (err < 0)
			break;
	}

	return err;
}

/* M-Audio FastTrack Ultra quirks */
/* FTU Effect switch (also used by C400/C600) */
struct snd_ftu_eff_switch_priv_val {
	struct usb_mixer_interface *mixer;
	int cached_value;
	int is_cached;
	int bUnitID;
	int validx;
};

static int snd_ftu_eff_switch_info(struct snd_kcontrol *kcontrol,
					struct snd_ctl_elem_info *uinfo)
{
	static const char *texts[8] = {"Room 1",
				       "Room 2",
				       "Room 3",
				       "Hall 1",
				       "Hall 2",
				       "Plate",
				       "Delay",
				       "Echo"
	};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 8;
	if (uinfo->value.enumerated.item > 7)
		uinfo->value.enumerated.item = 7;
	strcpy(uinfo->value.enumerated.name,
		texts[uinfo->value.enumerated.item]);

	return 0;
}

static int snd_ftu_eff_switch_get(struct snd_kcontrol *kctl,
					struct snd_ctl_elem_value *ucontrol)
{
	struct snd_usb_audio *chip;
	struct usb_mixer_interface *mixer;
	struct snd_ftu_eff_switch_priv_val *pval;
	int err;
	unsigned char value[2];
	int id, validx;

	const int val_len = 2;

	value[0] = 0x00;
	value[1] = 0x00;

	pval = (struct snd_ftu_eff_switch_priv_val *)
		kctl->private_value;

	if (pval->is_cached) {
		ucontrol->value.enumerated.item[0] = pval->cached_value;
		return 0;
	}

	mixer = (struct usb_mixer_interface *) pval->mixer;
	if (snd_BUG_ON(!mixer))
		return -EINVAL;

	chip = (struct snd_usb_audio *) mixer->chip;
	if (snd_BUG_ON(!chip))
		return -EINVAL;

	id = pval->bUnitID;
	validx = pval->validx;

	down_read(&mixer->chip->shutdown_rwsem);
	if (mixer->chip->shutdown)
		err = -ENODEV;
	else
		err = snd_usb_ctl_msg(chip->dev,
			usb_rcvctrlpipe(chip->dev, 0), UAC_GET_CUR,
			USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
			validx << 8, snd_usb_ctrl_intf(chip) | (id << 8),
			value, val_len);
	up_read(&mixer->chip->shutdown_rwsem);
	if (err < 0)
		return err;

	ucontrol->value.enumerated.item[0] = value[0];
	pval->cached_value = value[0];
	pval->is_cached = 1;

	return 0;
}

static int snd_ftu_eff_switch_put(struct snd_kcontrol *kctl,
					struct snd_ctl_elem_value *ucontrol)
{
	struct snd_usb_audio *chip;
	struct snd_ftu_eff_switch_priv_val *pval;

	struct usb_mixer_interface *mixer;
	int changed, cur_val, err, new_val;
	unsigned char value[2];
	int id, validx;

	const int val_len = 2;

	changed = 0;

	pval = (struct snd_ftu_eff_switch_priv_val *)
		kctl->private_value;
	cur_val = pval->cached_value;
	new_val = ucontrol->value.enumerated.item[0];

	mixer = (struct usb_mixer_interface *) pval->mixer;
	if (snd_BUG_ON(!mixer))
		return -EINVAL;

	chip = (struct snd_usb_audio *) mixer->chip;
	if (snd_BUG_ON(!chip))
		return -EINVAL;

	id = pval->bUnitID;
	validx = pval->validx;

	if (!pval->is_cached) {
		/* Read current value */
		down_read(&mixer->chip->shutdown_rwsem);
		if (mixer->chip->shutdown)
			err = -ENODEV;
		else
			err = snd_usb_ctl_msg(chip->dev,
				usb_rcvctrlpipe(chip->dev, 0), UAC_GET_CUR,
				USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
				validx << 8, snd_usb_ctrl_intf(chip) | (id << 8),
				value, val_len);
		up_read(&mixer->chip->shutdown_rwsem);
		if (err < 0)
			return err;

		cur_val = value[0];
		pval->cached_value = cur_val;
		pval->is_cached = 1;
	}
	/* update value if needed */
	if (cur_val != new_val) {
		value[0] = new_val;
		value[1] = 0;
		down_read(&mixer->chip->shutdown_rwsem);
		if (mixer->chip->shutdown)
			err = -ENODEV;
		else
			err = snd_usb_ctl_msg(chip->dev,
				usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
				USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
				validx << 8, snd_usb_ctrl_intf(chip) | (id << 8),
				value, val_len);
		up_read(&mixer->chip->shutdown_rwsem);
		if (err < 0)
			return err;

		pval->cached_value = new_val;
		pval->is_cached = 1;
		changed = 1;
	}

	return changed;
}

static void kctl_private_value_free(struct snd_kcontrol *kctl)
{
	kfree((void *)kctl->private_value);
}

static int snd_ftu_create_effect_switch(struct usb_mixer_interface *mixer,
	int validx, int bUnitID)
{
	static struct snd_kcontrol_new template = {
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Effect Program Switch",
		.index = 0,
		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
		.info = snd_ftu_eff_switch_info,
		.get = snd_ftu_eff_switch_get,
		.put = snd_ftu_eff_switch_put
	};

	int err;
	struct snd_kcontrol *kctl;
	struct snd_ftu_eff_switch_priv_val *pval;

	pval = kzalloc(sizeof(*pval), GFP_KERNEL);
	if (!pval)
		return -ENOMEM;

	pval->cached_value = 0;
	pval->is_cached = 0;
	pval->mixer = mixer;
	pval->bUnitID = bUnitID;
	pval->validx = validx;

	template.private_value = (unsigned long) pval;
	kctl = snd_ctl_new1(&template, mixer->chip);
	if (!kctl) {
		kfree(pval);
		return -ENOMEM;
	}

	kctl->private_free = kctl_private_value_free;
	err = snd_ctl_add(mixer->chip->card, kctl);
	if (err < 0)
		return err;

	return 0;
}

/* Create volume controls for FTU devices*/
static int snd_ftu_create_volume_ctls(struct usb_mixer_interface *mixer)
{
	char name[64];
	unsigned int control, cmask;
	int in, out, err;

	const unsigned int id = 5;
	const int val_type = USB_MIXER_S16;

	for (out = 0; out < 8; out++) {
		control = out + 1;
		for (in = 0; in < 8; in++) {
			cmask = 1 << in;
			snprintf(name, sizeof(name),
				"AIn%d - Out%d Capture Volume",
				in  + 1, out + 1);
			err = snd_create_std_mono_ctl(mixer, id, control,
							cmask, val_type, name,
							&snd_usb_mixer_vol_tlv);
			if (err < 0)
				return err;
		}
		for (in = 8; in < 16; in++) {
			cmask = 1 << in;
			snprintf(name, sizeof(name),
				"DIn%d - Out%d Playback Volume",
				in - 7, out + 1);
			err = snd_create_std_mono_ctl(mixer, id, control,
							cmask, val_type, name,
							&snd_usb_mixer_vol_tlv);
			if (err < 0)
				return err;
		}
	}

	return 0;
}

/* This control needs a volume quirk, see mixer.c */
static int snd_ftu_create_effect_volume_ctl(struct usb_mixer_interface *mixer)
{
	static const char name[] = "Effect Volume";
	const unsigned int id = 6;
	const int val_type = USB_MIXER_U8;
	const unsigned int control = 2;
	const unsigned int cmask = 0;

	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
					name, snd_usb_mixer_vol_tlv);
}

/* This control needs a volume quirk, see mixer.c */
static int snd_ftu_create_effect_duration_ctl(struct usb_mixer_interface *mixer)
{
	static const char name[] = "Effect Duration";
	const unsigned int id = 6;
	const int val_type = USB_MIXER_S16;
	const unsigned int control = 3;
	const unsigned int cmask = 0;

	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
					name, snd_usb_mixer_vol_tlv);
}

/* This control needs a volume quirk, see mixer.c */
static int snd_ftu_create_effect_feedback_ctl(struct usb_mixer_interface *mixer)
{
	static const char name[] = "Effect Feedback Volume";
	const unsigned int id = 6;
	const int val_type = USB_MIXER_U8;
	const unsigned int control = 4;
	const unsigned int cmask = 0;

	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
					name, NULL);
}

static int snd_ftu_create_effect_return_ctls(struct usb_mixer_interface *mixer)
{
	unsigned int cmask;
	int err, ch;
	char name[48];

	const unsigned int id = 7;
	const int val_type = USB_MIXER_S16;
	const unsigned int control = 7;

	for (ch = 0; ch < 4; ++ch) {
		cmask = 1 << ch;
		snprintf(name, sizeof(name),
			"Effect Return %d Volume", ch + 1);
		err = snd_create_std_mono_ctl(mixer, id, control,
						cmask, val_type, name,
						snd_usb_mixer_vol_tlv);
		if (err < 0)
			return err;
	}

	return 0;
}

static int snd_ftu_create_effect_send_ctls(struct usb_mixer_interface *mixer)
{
	unsigned int  cmask;
	int err, ch;
	char name[48];

	const unsigned int id = 5;
	const int val_type = USB_MIXER_S16;
	const unsigned int control = 9;

	for (ch = 0; ch < 8; ++ch) {
		cmask = 1 << ch;
		snprintf(name, sizeof(name),
			"Effect Send AIn%d Volume", ch + 1);
		err = snd_create_std_mono_ctl(mixer, id, control, cmask,
						val_type, name,
						snd_usb_mixer_vol_tlv);
		if (err < 0)
			return err;
	}
	for (ch = 8; ch < 16; ++ch) {
		cmask = 1 << ch;
		snprintf(name, sizeof(name),
			"Effect Send DIn%d Volume", ch - 7);
		err = snd_create_std_mono_ctl(mixer, id, control, cmask,
						val_type, name,
						snd_usb_mixer_vol_tlv);
		if (err < 0)
			return err;
	}
	return 0;
}

static int snd_ftu_create_mixer(struct usb_mixer_interface *mixer)
{
	int err;

	err = snd_ftu_create_volume_ctls(mixer);
	if (err < 0)
		return err;

	err = snd_ftu_create_effect_switch(mixer, 1, 6);
	if (err < 0)
		return err;

	err = snd_ftu_create_effect_volume_ctl(mixer);
	if (err < 0)
		return err;

	err = snd_ftu_create_effect_duration_ctl(mixer);
	if (err < 0)
		return err;

	err = snd_ftu_create_effect_feedback_ctl(mixer);
	if (err < 0)
		return err;

	err = snd_ftu_create_effect_return_ctls(mixer);
	if (err < 0)
		return err;

	err = snd_ftu_create_effect_send_ctls(mixer);
	if (err < 0)
		return err;

	return 0;
}

void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
			       unsigned char samplerate_id)
{
	struct usb_mixer_interface *mixer;
	struct usb_mixer_elem_info *cval;
	int unitid = 12; /* SamleRate ExtensionUnit ID */

	list_for_each_entry(mixer, &chip->mixer_list, list) {
		cval = mixer->id_elems[unitid];
		if (cval) {
			snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR,
						    cval->control << 8,
						    samplerate_id);
			snd_usb_mixer_notify_id(mixer, unitid);
		}
		break;
	}
}

/* M-Audio Fast Track C400/C600 */
/* C400/C600 volume controls, this control needs a volume quirk, see mixer.c */
static int snd_c400_create_vol_ctls(struct usb_mixer_interface *mixer)
{
	char name[64];
	unsigned int cmask, offset;
	int out, chan, err;
	int num_outs = 0;
	int num_ins = 0;

	const unsigned int id = 0x40;
	const int val_type = USB_MIXER_S16;
	const int control = 1;

	switch (mixer->chip->usb_id) {
	case USB_ID(0x0763, 0x2030):
		num_outs = 6;
		num_ins = 4;
		break;
	case USB_ID(0x0763, 0x2031):
		num_outs = 8;
		num_ins = 6;
		break;
	}

	for (chan = 0; chan < num_outs + num_ins; chan++) {
		for (out = 0; out < num_outs; out++) {
			if (chan < num_outs) {
				snprintf(name, sizeof(name),
					"PCM%d-Out%d Playback Volume",
					chan + 1, out + 1);
			} else {
				snprintf(name, sizeof(name),
					"In%d-Out%d Playback Volume",
					chan - num_outs + 1, out + 1);
			}

			cmask = (out == 0) ? 0 : 1 << (out - 1);
			offset = chan * num_outs;
			err = snd_create_std_mono_ctl_offset(mixer, id, control,
						cmask, val_type, offset, name,
						&snd_usb_mixer_vol_tlv);
			if (err < 0)
				return err;
		}
	}

	return 0;
}

/* This control needs a volume quirk, see mixer.c */
static int snd_c400_create_effect_volume_ctl(struct usb_mixer_interface *mixer)
{
	static const char name[] = "Effect Volume";
	const unsigned int id = 0x43;
	const int val_type = USB_MIXER_U8;
	const unsigned int control = 3;
	const unsigned int cmask = 0;

	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
					name, snd_usb_mixer_vol_tlv);
}

/* This control needs a volume quirk, see mixer.c */
static int snd_c400_create_effect_duration_ctl(struct usb_mixer_interface *mixer)
{
	static const char name[] = "Effect Duration";
	const unsigned int id = 0x43;
	const int val_type = USB_MIXER_S16;
	const unsigned int control = 4;
	const unsigned int cmask = 0;

	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
					name, snd_usb_mixer_vol_tlv);
}

/* This control needs a volume quirk, see mixer.c */
static int snd_c400_create_effect_feedback_ctl(struct usb_mixer_interface *mixer)
{
	static const char name[] = "Effect Feedback Volume";
	const unsigned int id = 0x43;
	const int val_type = USB_MIXER_U8;
	const unsigned int control = 5;
	const unsigned int cmask = 0;

	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
					name, NULL);
}

static int snd_c400_create_effect_vol_ctls(struct usb_mixer_interface *mixer)
{
	char name[64];
	unsigned int cmask;
	int chan, err;
	int num_outs = 0;
	int num_ins = 0;

	const unsigned int id = 0x42;
	const int val_type = USB_MIXER_S16;
	const int control = 1;

	switch (mixer->chip->usb_id) {
	case USB_ID(0x0763, 0x2030):
		num_outs = 6;
		num_ins = 4;
		break;
	case USB_ID(0x0763, 0x2031):
		num_outs = 8;
		num_ins = 6;
		break;
	}

	for (chan = 0; chan < num_outs + num_ins; chan++) {
		if (chan < num_outs) {
			snprintf(name, sizeof(name),
				"Effect Send DOut%d",
				chan + 1);
		} else {
			snprintf(name, sizeof(name),
				"Effect Send AIn%d",
				chan - num_outs + 1);
		}

		cmask = (chan == 0) ? 0 : 1 << (chan - 1);
		err = snd_create_std_mono_ctl(mixer, id, control,
						cmask, val_type, name,
						&snd_usb_mixer_vol_tlv);
		if (err < 0)
			return err;
	}

	return 0;
}

static int snd_c400_create_effect_ret_vol_ctls(struct usb_mixer_interface *mixer)
{
	char name[64];
	unsigned int cmask;
	int chan, err;
	int num_outs = 0;
	int offset = 0;

	const unsigned int id = 0x40;
	const int val_type = USB_MIXER_S16;
	const int control = 1;

	switch (mixer->chip->usb_id) {
	case USB_ID(0x0763, 0x2030):
		num_outs = 6;
		offset = 0x3c;
		/* { 0x3c, 0x43, 0x3e, 0x45, 0x40, 0x47 } */
		break;
	case USB_ID(0x0763, 0x2031):
		num_outs = 8;
		offset = 0x70;
		/* { 0x70, 0x79, 0x72, 0x7b, 0x74, 0x7d, 0x76, 0x7f } */
		break;
	}

	for (chan = 0; chan < num_outs; chan++) {
		snprintf(name, sizeof(name),
			"Effect Return %d",
			chan + 1);

		cmask = (chan == 0) ? 0 :
			1 << (chan + (chan % 2) * num_outs - 1);
		err = snd_create_std_mono_ctl_offset(mixer, id, control,
						cmask, val_type, offset, name,
						&snd_usb_mixer_vol_tlv);
		if (err < 0)
			return err;
	}

	return 0;
}

static int snd_c400_create_mixer(struct usb_mixer_interface *mixer)
{
	int err;

	err = snd_c400_create_vol_ctls(mixer);
	if (err < 0)
		return err;

	err = snd_c400_create_effect_vol_ctls(mixer);
	if (err < 0)
		return err;

	err = snd_c400_create_effect_ret_vol_ctls(mixer);
	if (err < 0)
		return err;

	err = snd_ftu_create_effect_switch(mixer, 2, 0x43);
	if (err < 0)
		return err;

	err = snd_c400_create_effect_volume_ctl(mixer);
	if (err < 0)
		return err;

	err = snd_c400_create_effect_duration_ctl(mixer);
	if (err < 0)
		return err;

	err = snd_c400_create_effect_feedback_ctl(mixer);
	if (err < 0)
		return err;

	return 0;
}

/*
 * The mixer units for Ebox-44 are corrupt, and even where they
 * are valid they presents mono controls as L and R channels of
 * stereo. So we provide a good mixer here.
 */
static struct std_mono_table ebox44_table[] = {
	{
		.unitid = 4,
		.control = 1,
		.cmask = 0x0,
		.val_type = USB_MIXER_INV_BOOLEAN,
		.name = "Headphone Playback Switch"
	},
	{
		.unitid = 4,
		.control = 2,
		.cmask = 0x1,
		.val_type = USB_MIXER_S16,
		.name = "Headphone A Mix Playback Volume"
	},
	{
		.unitid = 4,
		.control = 2,
		.cmask = 0x2,
		.val_type = USB_MIXER_S16,
		.name = "Headphone B Mix Playback Volume"
	},

	{
		.unitid = 7,
		.control = 1,
		.cmask = 0x0,
		.val_type = USB_MIXER_INV_BOOLEAN,
		.name = "Output Playback Switch"
	},
	{
		.unitid = 7,
		.control = 2,
		.cmask = 0x1,
		.val_type = USB_MIXER_S16,
		.name = "Output A Playback Volume"
	},
	{
		.unitid = 7,
		.control = 2,
		.cmask = 0x2,
		.val_type = USB_MIXER_S16,
		.name = "Output B Playback Volume"
	},

	{
		.unitid = 10,
		.control = 1,
		.cmask = 0x0,
		.val_type = USB_MIXER_INV_BOOLEAN,
		.name = "Input Capture Switch"
	},
	{
		.unitid = 10,
		.control = 2,
		.cmask = 0x1,
		.val_type = USB_MIXER_S16,
		.name = "Input A Capture Volume"
	},
	{
		.unitid = 10,
		.control = 2,
		.cmask = 0x2,
		.val_type = USB_MIXER_S16,
		.name = "Input B Capture Volume"
	},

	{}
};

/* Audio Advantage Micro II findings:
 *
 * Mapping spdif AES bits to vendor register.bit:
 * AES0: [0 0 0 0 2.3 2.2 2.1 2.0] - default 0x00
 * AES1: [3.3 3.2.3.1.3.0 2.7 2.6 2.5 2.4] - default: 0x01
 * AES2: [0 0 0 0 0 0 0 0]
 * AES3: [0 0 0 0 0 0 x 0] - 'x' bit is set basing on standard usb request
 *                           (UAC_EP_CS_ATTR_SAMPLE_RATE) for Audio Devices
 *
 * power on values:
 * r2: 0x10
 * r3: 0x20 (b7 is zeroed just before playback (except IEC61937) and set
 *           just after it to 0xa0, presumably it disables/mutes some analog
 *           parts when there is no audio.)
 * r9: 0x28
 *
 * Optical transmitter on/off:
 * vendor register.bit: 9.1
 * 0 - on (0x28 register value)
 * 1 - off (0x2a register value)
 *
 */
static int snd_microii_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_microii_spdif_default_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
	int err;
	struct usb_interface *iface;
	struct usb_host_interface *alts;
	unsigned int ep;
	unsigned char data[3];
	int rate;

	ucontrol->value.iec958.status[0] = kcontrol->private_value & 0xff;
	ucontrol->value.iec958.status[1] = (kcontrol->private_value >> 8) & 0xff;
	ucontrol->value.iec958.status[2] = 0x00;

	/* use known values for that card: interface#1 altsetting#1 */
	iface = usb_ifnum_to_if(mixer->chip->dev, 1);
	alts = &iface->altsetting[1];
	ep = get_endpoint(alts, 0)->bEndpointAddress;

	err = snd_usb_ctl_msg(mixer->chip->dev,
			usb_rcvctrlpipe(mixer->chip->dev, 0),
			UAC_GET_CUR,
			USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_IN,
			UAC_EP_CS_ATTR_SAMPLE_RATE << 8,
			ep,
			data,
			sizeof(data));
	if (err < 0)
		goto end;

	rate = data[0] | (data[1] << 8) | (data[2] << 16);
	ucontrol->value.iec958.status[3] = (rate == 48000) ?
			IEC958_AES3_CON_FS_48000 : IEC958_AES3_CON_FS_44100;

	err = 0;
end:
	return err;
}

static int snd_microii_spdif_default_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
	int err;
	u8 reg;
	unsigned long priv_backup = kcontrol->private_value;

	reg = ((ucontrol->value.iec958.status[1] & 0x0f) << 4) |
			(ucontrol->value.iec958.status[0] & 0x0f);
	err = snd_usb_ctl_msg(mixer->chip->dev,
			usb_sndctrlpipe(mixer->chip->dev, 0),
			UAC_SET_CUR,
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
			reg,
			2,
			NULL,
			0);
	if (err < 0)
		goto end;

	kcontrol->private_value &= 0xfffff0f0;
	kcontrol->private_value |= (ucontrol->value.iec958.status[1] & 0x0f) << 8;
	kcontrol->private_value |= (ucontrol->value.iec958.status[0] & 0x0f);

	reg = (ucontrol->value.iec958.status[0] & IEC958_AES0_NONAUDIO) ?
			0xa0 : 0x20;
	reg |= (ucontrol->value.iec958.status[1] >> 4) & 0x0f;
	err = snd_usb_ctl_msg(mixer->chip->dev,
			usb_sndctrlpipe(mixer->chip->dev, 0),
			UAC_SET_CUR,
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
			reg,
			3,
			NULL,
			0);
	if (err < 0)
		goto end;

	kcontrol->private_value &= 0xffff0fff;
	kcontrol->private_value |= (ucontrol->value.iec958.status[1] & 0xf0) << 8;

	/* The frequency bits in AES3 cannot be set via register access. */

	/* Silently ignore any bits from the request that cannot be set. */

	err = (priv_backup != kcontrol->private_value);
end:
	return err;
}

static int snd_microii_spdif_mask_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.iec958.status[0] = 0x0f;
	ucontrol->value.iec958.status[1] = 0xff;
	ucontrol->value.iec958.status[2] = 0x00;
	ucontrol->value.iec958.status[3] = 0x00;

	return 0;
}

static int snd_microii_spdif_switch_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.integer.value[0] = !(kcontrol->private_value & 0x02);

	return 0;
}

static int snd_microii_spdif_switch_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
	int err;
	u8 reg = ucontrol->value.integer.value[0] ? 0x28 : 0x2a;

	err = snd_usb_ctl_msg(mixer->chip->dev,
			usb_sndctrlpipe(mixer->chip->dev, 0),
			UAC_SET_CUR,
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
			reg,
			9,
			NULL,
			0);

	if (!err) {
		err = (reg != (kcontrol->private_value & 0x0ff));
		if (err)
			kcontrol->private_value = reg;
	}

	return err;
}

static struct snd_kcontrol_new snd_microii_mixer_spdif[] = {
	{
		.iface =    SNDRV_CTL_ELEM_IFACE_PCM,
		.name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
		.info =     snd_microii_spdif_info,
		.get =      snd_microii_spdif_default_get,
		.put =      snd_microii_spdif_default_put,
		.private_value = 0x00000100UL,/* reset value */
	},
	{
		.access =   SNDRV_CTL_ELEM_ACCESS_READ,
		.iface =    SNDRV_CTL_ELEM_IFACE_PCM,
		.name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
		.info =     snd_microii_spdif_info,
		.get =      snd_microii_spdif_mask_get,
	},
	{
		.iface =    SNDRV_CTL_ELEM_IFACE_MIXER,
		.name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
		.info =     snd_ctl_boolean_mono_info,
		.get =      snd_microii_spdif_switch_get,
		.put =      snd_microii_spdif_switch_put,
		.private_value = 0x00000028UL,/* reset value */
	}
};

static int snd_microii_controls_create(struct usb_mixer_interface *mixer)
{
	int err, i;

	for (i = 0; i < ARRAY_SIZE(snd_microii_mixer_spdif); ++i) {
		err = snd_ctl_add(mixer->chip->card,
			snd_ctl_new1(&snd_microii_mixer_spdif[i], mixer));
		if (err < 0)
			return err;
	}

	return 0;
}

int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
{
	int err = 0;
	struct snd_info_entry *entry;

	if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
		return err;

	switch (mixer->chip->usb_id) {
	case USB_ID(0x041e, 0x3020):
	case USB_ID(0x041e, 0x3040):
	case USB_ID(0x041e, 0x3042):
	case USB_ID(0x041e, 0x30df):
	case USB_ID(0x041e, 0x3048):
		err = snd_audigy2nx_controls_create(mixer);
		if (err < 0)
			break;
		if (!snd_card_proc_new(mixer->chip->card, "audigy2nx", &entry))
			snd_info_set_text_ops(entry, mixer,
					      snd_audigy2nx_proc_read);
		break;

	/* EMU0204 */
	case USB_ID(0x041e, 0x3f19):
		err = snd_emu0204_controls_create(mixer);
		if (err < 0)
			break;
		break;

	case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
	case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C400 */
		err = snd_c400_create_mixer(mixer);
		break;

	case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */
	case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */
		err = snd_ftu_create_mixer(mixer);
		break;

	case USB_ID(0x0b05, 0x1739): /* ASUS Xonar U1 */
	case USB_ID(0x0b05, 0x1743): /* ASUS Xonar U1 (2) */
	case USB_ID(0x0b05, 0x17a0): /* ASUS Xonar U3 */
		err = snd_xonar_u1_controls_create(mixer);
		break;

	case USB_ID(0x0d8c, 0x0103): /* Audio Advantage Micro II */
		err = snd_microii_controls_create(mixer);
		break;

	case USB_ID(0x17cc, 0x1011): /* Traktor Audio 6 */
		err = snd_nativeinstruments_create_mixer(mixer,
				snd_nativeinstruments_ta6_mixers,
				ARRAY_SIZE(snd_nativeinstruments_ta6_mixers));
		break;

	case USB_ID(0x17cc, 0x1021): /* Traktor Audio 10 */
		err = snd_nativeinstruments_create_mixer(mixer,
				snd_nativeinstruments_ta10_mixers,
				ARRAY_SIZE(snd_nativeinstruments_ta10_mixers));
		break;

	case USB_ID(0x200c, 0x1018): /* Electrix Ebox-44 */
		/* detection is disabled in mixer_maps.c */
		err = snd_create_std_mono_table(mixer, ebox44_table);
		break;
	}

	return err;
}

void snd_usb_mixer_rc_memory_change(struct usb_mixer_interface *mixer,
				    int unitid)
{
	if (!mixer->rc_cfg)
		return;
	/* unit ids specific to Extigy/Audigy 2 NX: */
	switch (unitid) {
	case 0: /* remote control */
		mixer->rc_urb->dev = mixer->chip->dev;
		usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
		break;
	case 4: /* digital in jack */
	case 7: /* line in jacks */
	case 19: /* speaker out jacks */
	case 20: /* headphones out jack */
		break;
	/* live24ext: 4 = line-in jack */
	case 3:	/* hp-out jack (may actuate Mute) */
		if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
		    mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
			snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
		break;
	default:
		usb_audio_dbg(mixer->chip, "memory change in unknown unit %d\n", unitid);
		break;
	}
}