aboutsummaryrefslogtreecommitdiffstats
path: root/sound/pci/ice1712/ews.c
blob: 6f65da48e00dc0c1fa6d769247f694025ce07358 (plain) (blame)
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
/*
 *   ALSA driver for ICEnsemble ICE1712 (Envy24)
 *
 *   Lowlevel functions for Terratec EWS88MT/D, EWX24/96, DMX 6Fire
 *
 *	Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
 *                    2002 Takashi Iwai <tiwai@suse.de>
 *
 *   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 <asm/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/cs8427.h>
#include <sound/asoundef.h>

#include "ice1712.h"
#include "ews.h"

#define SND_CS8404
#include <sound/cs8403.h>

enum {
	EWS_I2C_CS8404 = 0, EWS_I2C_PCF1, EWS_I2C_PCF2,
	EWS_I2C_88D = 0,
	EWS_I2C_6FIRE = 0
};
	

/*
 * access via i2c mode (for EWX 24/96, EWS 88MT&D)
 */

/* send SDA and SCL */
static void ewx_i2c_setlines(struct snd_i2c_bus *bus, int clk, int data)
{
	struct snd_ice1712 *ice = bus->private_data;
	unsigned char tmp = 0;
	if (clk)
		tmp |= ICE1712_EWX2496_SERIAL_CLOCK;
	if (data)
		tmp |= ICE1712_EWX2496_SERIAL_DATA;
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp);
	udelay(5);
}

static int ewx_i2c_getclock(struct snd_i2c_bus *bus)
{
	struct snd_ice1712 *ice = bus->private_data;
	return snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA) & ICE1712_EWX2496_SERIAL_CLOCK ? 1 : 0;
}

static int ewx_i2c_getdata(struct snd_i2c_bus *bus, int ack)
{
	struct snd_ice1712 *ice = bus->private_data;
	int bit;
	/* set RW pin to low */
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_WRITE_MASK, ~ICE1712_EWX2496_RW);
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, 0);
	if (ack)
		udelay(5);
	bit = snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA) & ICE1712_EWX2496_SERIAL_DATA ? 1 : 0;
	/* set RW pin to high */
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, ICE1712_EWX2496_RW);
	/* reset write mask */
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_WRITE_MASK, ~ICE1712_EWX2496_SERIAL_CLOCK);
	return bit;
}

static void ewx_i2c_start(struct snd_i2c_bus *bus)
{
	struct snd_ice1712 *ice = bus->private_data;
	unsigned char mask;

	snd_ice1712_save_gpio_status(ice);
	/* set RW high */
	mask = ICE1712_EWX2496_RW;
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWX2496:
		mask |= ICE1712_EWX2496_AK4524_CS; /* CS high also */
		break;
	case ICE1712_SUBDEVICE_DMX6FIRE:
		mask |= ICE1712_6FIRE_AK4524_CS_MASK; /* CS high also */
		break;
	}
	snd_ice1712_gpio_write_bits(ice, mask, mask);
}

static void ewx_i2c_stop(struct snd_i2c_bus *bus)
{
	struct snd_ice1712 *ice = bus->private_data;
	snd_ice1712_restore_gpio_status(ice);
}

static void ewx_i2c_direction(struct snd_i2c_bus *bus, int clock, int data)
{
	struct snd_ice1712 *ice = bus->private_data;
	unsigned char mask = 0;

	if (clock)
		mask |= ICE1712_EWX2496_SERIAL_CLOCK; /* write SCL */
	if (data)
		mask |= ICE1712_EWX2496_SERIAL_DATA; /* write SDA */
	ice->gpio.direction &= ~(ICE1712_EWX2496_SERIAL_CLOCK|ICE1712_EWX2496_SERIAL_DATA);
	ice->gpio.direction |= mask;
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_DIRECTION, ice->gpio.direction);
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_WRITE_MASK, ~mask);
}

static struct snd_i2c_bit_ops snd_ice1712_ewx_cs8427_bit_ops = {
	.start = ewx_i2c_start,
	.stop = ewx_i2c_stop,
	.direction = ewx_i2c_direction,
	.setlines = ewx_i2c_setlines,
	.getclock = ewx_i2c_getclock,
	.getdata = ewx_i2c_getdata,
};


/*
 * AK4524 access
 */

/* AK4524 chip select; address 0x48 bit 0-3 */
static int snd_ice1712_ews88mt_chip_select(struct snd_ice1712 *ice, int chip_mask)
{
	unsigned char data, ndata;

	snd_assert(chip_mask >= 0 && chip_mask <= 0x0f, return -EINVAL);
	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_PCF2], &data, 1) != 1)
		goto __error;
	ndata = (data & 0xf0) | chip_mask;
	if (ndata != data)
		if (snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_PCF2], &ndata, 1) != 1)
			goto __error;
	snd_i2c_unlock(ice->i2c);
	return 0;

     __error:
	snd_i2c_unlock(ice->i2c);
	snd_printk(KERN_ERR "AK4524 chip select failed, check cable to the front module\n");
	return -EIO;
}

/* start callback for EWS88MT, needs to select a certain chip mask */
static void ews88mt_ak4524_lock(struct snd_akm4xxx *ak, int chip)
{
	struct snd_ice1712 *ice = ak->private_data[0];
	unsigned char tmp;
	/* assert AK4524 CS */
	if (snd_ice1712_ews88mt_chip_select(ice, ~(1 << chip) & 0x0f) < 0)
		snd_printk(KERN_ERR "fatal error (ews88mt chip select)\n");
	snd_ice1712_save_gpio_status(ice);
	tmp = ICE1712_EWS88_SERIAL_DATA |
		ICE1712_EWS88_SERIAL_CLOCK |
		ICE1712_EWS88_RW;
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_DIRECTION,
			  ice->gpio.direction | tmp);
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_WRITE_MASK, ~tmp);
}

/* stop callback for EWS88MT, needs to deselect chip mask */
static void ews88mt_ak4524_unlock(struct snd_akm4xxx *ak, int chip)
{
	struct snd_ice1712 *ice = ak->private_data[0];
	snd_ice1712_restore_gpio_status(ice);
	udelay(1);
	snd_ice1712_ews88mt_chip_select(ice, 0x0f);
}

/* start callback for EWX24/96 */
static void ewx2496_ak4524_lock(struct snd_akm4xxx *ak, int chip)
{
	struct snd_ice1712 *ice = ak->private_data[0];
	unsigned char tmp;
	snd_ice1712_save_gpio_status(ice);
	tmp =  ICE1712_EWX2496_SERIAL_DATA |
		ICE1712_EWX2496_SERIAL_CLOCK |
		ICE1712_EWX2496_AK4524_CS |
		ICE1712_EWX2496_RW;
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_DIRECTION,
			  ice->gpio.direction | tmp);
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_WRITE_MASK, ~tmp);
}

/* start callback for DMX 6fire */
static void dmx6fire_ak4524_lock(struct snd_akm4xxx *ak, int chip)
{
	struct snd_ak4xxx_private *priv = (void *)ak->private_value[0];
	struct snd_ice1712 *ice = ak->private_data[0];
	unsigned char tmp;
	snd_ice1712_save_gpio_status(ice);
	tmp = priv->cs_mask = priv->cs_addr = (1 << chip) & ICE1712_6FIRE_AK4524_CS_MASK;
	tmp |= ICE1712_6FIRE_SERIAL_DATA |
		ICE1712_6FIRE_SERIAL_CLOCK |
		ICE1712_6FIRE_RW;
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_DIRECTION,
			  ice->gpio.direction | tmp);
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_WRITE_MASK, ~tmp);
}

/*
 * CS8404 interface on EWS88MT/D
 */

static void snd_ice1712_ews_cs8404_spdif_write(struct snd_ice1712 *ice, unsigned char bits)
{
	unsigned char bytes[2];

	snd_i2c_lock(ice->i2c);
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
		if (snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_CS8404], &bits, 1) != 1)
			goto _error;
		break;
	case ICE1712_SUBDEVICE_EWS88D:
		if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_88D], bytes, 2) != 2)
			goto _error;
		if (bits != bytes[1]) {
			bytes[1] = bits;
			if (snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_88D], bytes, 2) != 2)
				goto _error;
		}
		break;
	}
 _error:
	snd_i2c_unlock(ice->i2c);
}

/*
 */

static void ews88_spdif_default_get(struct snd_ice1712 *ice, struct snd_ctl_elem_value *ucontrol)
{
	snd_cs8404_decode_spdif_bits(&ucontrol->value.iec958, ice->spdif.cs8403_bits);
}

static int ews88_spdif_default_put(struct snd_ice1712 *ice, struct snd_ctl_elem_value *ucontrol)
{
	unsigned int val;
	int change;

	val = snd_cs8404_encode_spdif_bits(&ucontrol->value.iec958);
	spin_lock_irq(&ice->reg_lock);
	change = ice->spdif.cs8403_bits != val;
	ice->spdif.cs8403_bits = val;
	if (change && ice->playback_pro_substream == NULL) {
		spin_unlock_irq(&ice->reg_lock);
		snd_ice1712_ews_cs8404_spdif_write(ice, val);
	} else {
		spin_unlock_irq(&ice->reg_lock);
	}
	return change;
}

static void ews88_spdif_stream_get(struct snd_ice1712 *ice, struct snd_ctl_elem_value *ucontrol)
{
	snd_cs8404_decode_spdif_bits(&ucontrol->value.iec958, ice->spdif.cs8403_stream_bits);
}

static int ews88_spdif_stream_put(struct snd_ice1712 *ice, struct snd_ctl_elem_value *ucontrol)
{
	unsigned int val;
	int change;

	val = snd_cs8404_encode_spdif_bits(&ucontrol->value.iec958);
	spin_lock_irq(&ice->reg_lock);
	change = ice->spdif.cs8403_stream_bits != val;
	ice->spdif.cs8403_stream_bits = val;
	if (change && ice->playback_pro_substream != NULL) {
		spin_unlock_irq(&ice->reg_lock);
		snd_ice1712_ews_cs8404_spdif_write(ice, val);
	} else {
		spin_unlock_irq(&ice->reg_lock);
	}
	return change;
}


/* open callback */
static void ews88_open_spdif(struct snd_ice1712 *ice, struct snd_pcm_substream *substream)
{
	ice->spdif.cs8403_stream_bits = ice->spdif.cs8403_bits;
}

/* set up SPDIF for EWS88MT / EWS88D */
static void ews88_setup_spdif(struct snd_ice1712 *ice, int rate)
{
	unsigned long flags;
	unsigned char tmp;
	int change;

	spin_lock_irqsave(&ice->reg_lock, flags);
	tmp = ice->spdif.cs8403_stream_bits;
	if (tmp & 0x10)		/* consumer */
		tmp &= (tmp & 0x01) ? ~0x06 : ~0x60;
	switch (rate) {
	case 32000: tmp |= (tmp & 0x01) ? 0x02 : 0x00; break;
	case 44100: tmp |= (tmp & 0x01) ? 0x06 : 0x40; break;
	case 48000: tmp |= (tmp & 0x01) ? 0x04 : 0x20; break;
	default: tmp |= (tmp & 0x01) ? 0x06 : 0x40; break;
	}
	change = ice->spdif.cs8403_stream_bits != tmp;
	ice->spdif.cs8403_stream_bits = tmp;
	spin_unlock_irqrestore(&ice->reg_lock, flags);
	if (change)
		snd_ctl_notify(ice->card, SNDRV_CTL_EVENT_MASK_VALUE, &ice->spdif.stream_ctl->id);
	snd_ice1712_ews_cs8404_spdif_write(ice, tmp);
}


/*
 */
static struct snd_akm4xxx akm_ews88mt __devinitdata = {
	.num_adcs = 8,
	.num_dacs = 8,
	.type = SND_AK4524,
	.ops = {
		.lock = ews88mt_ak4524_lock,
		.unlock = ews88mt_ak4524_unlock
	}
};

static struct snd_ak4xxx_private akm_ews88mt_priv __devinitdata = {
	.caddr = 2,
	.cif = 1, /* CIF high */
	.data_mask = ICE1712_EWS88_SERIAL_DATA,
	.clk_mask = ICE1712_EWS88_SERIAL_CLOCK,
	.cs_mask = 0,
	.cs_addr = 0,
	.cs_none = 0, /* no chip select on gpio */
	.add_flags = ICE1712_EWS88_RW, /* set rw bit high */
	.mask_flags = 0,
};

static struct snd_akm4xxx akm_ewx2496 __devinitdata = {
	.num_adcs = 2,
	.num_dacs = 2,
	.type = SND_AK4524,
	.ops = {
		.lock = ewx2496_ak4524_lock
	}
};

static struct snd_ak4xxx_private akm_ewx2496_priv __devinitdata = {
	.caddr = 2,
	.cif = 1, /* CIF high */
	.data_mask = ICE1712_EWS88_SERIAL_DATA,
	.clk_mask = ICE1712_EWS88_SERIAL_CLOCK,
	.cs_mask = ICE1712_EWX2496_AK4524_CS,
	.cs_addr = ICE1712_EWX2496_AK4524_CS,
	.cs_none = 0,
	.add_flags = ICE1712_EWS88_RW, /* set rw bit high */
	.mask_flags = 0,
};

static struct snd_akm4xxx akm_6fire __devinitdata = {
	.num_adcs = 6,
	.num_dacs = 6,
	.type = SND_AK4524,
	.ops = {
		.lock = dmx6fire_ak4524_lock
	}
};

static struct snd_ak4xxx_private akm_6fire_priv __devinitdata = {
	.caddr = 2,
	.cif = 1, /* CIF high */
	.data_mask = ICE1712_6FIRE_SERIAL_DATA,
	.clk_mask = ICE1712_6FIRE_SERIAL_CLOCK,
	.cs_mask = 0,
	.cs_addr = 0, /* set later */
	.cs_none = 0,
	.add_flags = ICE1712_6FIRE_RW, /* set rw bit high */
	.mask_flags = 0,
};

/*
 * initialize the chip
 */

/* 6fire specific */
#define PCF9554_REG_INPUT      0
#define PCF9554_REG_OUTPUT     1
#define PCF9554_REG_POLARITY   2
#define PCF9554_REG_CONFIG     3

static int snd_ice1712_6fire_write_pca(struct snd_ice1712 *ice, unsigned char reg, unsigned char data);

static int __devinit snd_ice1712_ews_init(struct snd_ice1712 *ice)
{
	int err;
	struct snd_akm4xxx *ak;

	/* set the analog DACs */
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWX2496:
		ice->num_total_dacs = 2;
		ice->num_total_adcs = 2;
		break;	
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
		ice->num_total_dacs = 8;
		ice->num_total_adcs = 8;
		break;
	case ICE1712_SUBDEVICE_EWS88D:
		/* Note: not analog but ADAT I/O */
		ice->num_total_dacs = 8;
		ice->num_total_adcs = 8;
		break;
	case ICE1712_SUBDEVICE_DMX6FIRE:
		ice->num_total_dacs = 6;
		ice->num_total_adcs = 6;
		break;
	}

	/* create i2c */
	if ((err = snd_i2c_bus_create(ice->card, "ICE1712 GPIO 1", NULL, &ice->i2c)) < 0) {
		snd_printk(KERN_ERR "unable to create I2C bus\n");
		return err;
	}
	ice->i2c->private_data = ice;
	ice->i2c->hw_ops.bit = &snd_ice1712_ewx_cs8427_bit_ops;

	/* create i2c devices */
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_DMX6FIRE:
		if ((err = snd_i2c_device_create(ice->i2c, "PCF9554", ICE1712_6FIRE_PCF9554_ADDR, &ice->spec.i2cdevs[EWS_I2C_6FIRE])) < 0) {
			snd_printk(KERN_ERR "PCF9554 initialization failed\n");
			return err;
		}
		snd_ice1712_6fire_write_pca(ice, PCF9554_REG_CONFIG, 0x80);
		break;
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
		if ((err = snd_i2c_device_create(ice->i2c, "CS8404", ICE1712_EWS88MT_CS8404_ADDR, &ice->spec.i2cdevs[EWS_I2C_CS8404])) < 0)
			return err;
		if ((err = snd_i2c_device_create(ice->i2c, "PCF8574 (1st)", ICE1712_EWS88MT_INPUT_ADDR, &ice->spec.i2cdevs[EWS_I2C_PCF1])) < 0)
			return err;
		if ((err = snd_i2c_device_create(ice->i2c, "PCF8574 (2nd)", ICE1712_EWS88MT_OUTPUT_ADDR, &ice->spec.i2cdevs[EWS_I2C_PCF2])) < 0)
			return err;
		/* Check if the front module is connected */
		if ((err = snd_ice1712_ews88mt_chip_select(ice, 0x0f)) < 0)
			return err;
		break;
	case ICE1712_SUBDEVICE_EWS88D:
		if ((err = snd_i2c_device_create(ice->i2c, "PCF8575", ICE1712_EWS88D_PCF_ADDR, &ice->spec.i2cdevs[EWS_I2C_88D])) < 0)
			return err;
		break;
	}

	/* set up SPDIF interface */
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWX2496:
		if ((err = snd_ice1712_init_cs8427(ice, CS8427_BASE_ADDR)) < 0)
			return err;
		snd_cs8427_reg_write(ice->cs8427, CS8427_REG_RECVERRMASK, CS8427_UNLOCK | CS8427_CONF | CS8427_BIP | CS8427_PAR);
		break;
	case ICE1712_SUBDEVICE_DMX6FIRE:
		if ((err = snd_ice1712_init_cs8427(ice, ICE1712_6FIRE_CS8427_ADDR)) < 0)
			return err;
		snd_cs8427_reg_write(ice->cs8427, CS8427_REG_RECVERRMASK, CS8427_UNLOCK | CS8427_CONF | CS8427_BIP | CS8427_PAR);
		break;
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
	case ICE1712_SUBDEVICE_EWS88D:
		/* set up CS8404 */
		ice->spdif.ops.open = ews88_open_spdif;
		ice->spdif.ops.setup_rate = ews88_setup_spdif;
		ice->spdif.ops.default_get = ews88_spdif_default_get;
		ice->spdif.ops.default_put = ews88_spdif_default_put;
		ice->spdif.ops.stream_get = ews88_spdif_stream_get;
		ice->spdif.ops.stream_put = ews88_spdif_stream_put;
		/* Set spdif defaults */
		snd_ice1712_ews_cs8404_spdif_write(ice, ice->spdif.cs8403_bits);
		break;
	}

	/* no analog? */
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWS88D:
		return 0;
	}

	/* analog section */
	ak = ice->akm = kmalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
	if (! ak)
		return -ENOMEM;
	ice->akm_codecs = 1;

	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
		err = snd_ice1712_akm4xxx_init(ak, &akm_ews88mt, &akm_ews88mt_priv, ice);
		break;
	case ICE1712_SUBDEVICE_EWX2496:
		err = snd_ice1712_akm4xxx_init(ak, &akm_ewx2496, &akm_ewx2496_priv, ice);
		break;
	case ICE1712_SUBDEVICE_DMX6FIRE:
		err = snd_ice1712_akm4xxx_init(ak, &akm_6fire, &akm_6fire_priv, ice);
		break;
	default:
		err = 0;
	}

	return err;
}

/*
 * EWX 24/96 specific controls
 */

/* i/o sensitivity - this callback is shared among other devices, too */
static int snd_ice1712_ewx_io_sense_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo){

	static char *texts[2] = {
		"+4dBu", "-10dBV",
	};
	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;
	if (uinfo->value.enumerated.item >= 2)
		uinfo->value.enumerated.item = 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_ice1712_ewx_io_sense_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char mask = kcontrol->private_value & 0xff;
	
	snd_ice1712_save_gpio_status(ice);
	ucontrol->value.enumerated.item[0] = snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA) & mask ? 1 : 0;
	snd_ice1712_restore_gpio_status(ice);
	return 0;
}

static int snd_ice1712_ewx_io_sense_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char mask = kcontrol->private_value & 0xff;
	int val, nval;

	if (kcontrol->private_value & (1 << 31))
		return -EPERM;
	nval = ucontrol->value.enumerated.item[0] ? mask : 0;
	snd_ice1712_save_gpio_status(ice);
	val = snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA);
	nval |= val & ~mask;
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, nval);
	snd_ice1712_restore_gpio_status(ice);
	return val != nval;
}

static struct snd_kcontrol_new snd_ice1712_ewx2496_controls[] __devinitdata = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Input Sensitivity Switch",
		.info = snd_ice1712_ewx_io_sense_info,
		.get = snd_ice1712_ewx_io_sense_get,
		.put = snd_ice1712_ewx_io_sense_put,
		.private_value = ICE1712_EWX2496_AIN_SEL,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Output Sensitivity Switch",
		.info = snd_ice1712_ewx_io_sense_info,
		.get = snd_ice1712_ewx_io_sense_get,
		.put = snd_ice1712_ewx_io_sense_put,
		.private_value = ICE1712_EWX2496_AOUT_SEL,
	},
};


/*
 * EWS88MT specific controls
 */
/* analog output sensitivity;; address 0x48 bit 6 */
static int snd_ice1712_ews88mt_output_sense_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char data;

	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_PCF2], &data, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	ucontrol->value.enumerated.item[0] = data & ICE1712_EWS88MT_OUTPUT_SENSE ? 1 : 0; /* high = -10dBV, low = +4dBu */
	return 0;
}

/* analog output sensitivity;; address 0x48 bit 6 */
static int snd_ice1712_ews88mt_output_sense_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char data, ndata;

	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_PCF2], &data, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	ndata = (data & ~ICE1712_EWS88MT_OUTPUT_SENSE) | (ucontrol->value.enumerated.item[0] ? ICE1712_EWS88MT_OUTPUT_SENSE : 0);
	if (ndata != data && snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_PCF2], &ndata, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	return ndata != data;
}

/* analog input sensitivity; address 0x46 */
static int snd_ice1712_ews88mt_input_sense_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int channel = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	unsigned char data;

	snd_assert(channel >= 0 && channel <= 7, return 0);
	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_PCF1], &data, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	/* reversed; high = +4dBu, low = -10dBV */
	ucontrol->value.enumerated.item[0] = data & (1 << channel) ? 0 : 1;
	snd_i2c_unlock(ice->i2c);
	return 0;
}

/* analog output sensitivity; address 0x46 */
static int snd_ice1712_ews88mt_input_sense_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int channel = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	unsigned char data, ndata;

	snd_assert(channel >= 0 && channel <= 7, return 0);
	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_PCF1], &data, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	ndata = (data & ~(1 << channel)) | (ucontrol->value.enumerated.item[0] ? 0 : (1 << channel));
	if (ndata != data && snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_PCF1], &ndata, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	return ndata != data;
}

static struct snd_kcontrol_new snd_ice1712_ews88mt_input_sense __devinitdata = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Input Sensitivity Switch",
	.info = snd_ice1712_ewx_io_sense_info,
	.get = snd_ice1712_ews88mt_input_sense_get,
	.put = snd_ice1712_ews88mt_input_sense_put,
	.count = 8,
};

static struct snd_kcontrol_new snd_ice1712_ews88mt_output_sense __devinitdata = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Output Sensitivity Switch",
	.info = snd_ice1712_ewx_io_sense_info,
	.get = snd_ice1712_ews88mt_output_sense_get,
	.put = snd_ice1712_ews88mt_output_sense_put,
};


/*
 * EWS88D specific controls
 */

#define snd_ice1712_ews88d_control_info		snd_ctl_boolean_mono_info

static int snd_ice1712_ews88d_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int shift = kcontrol->private_value & 0xff;
	int invert = (kcontrol->private_value >> 8) & 1;
	unsigned char data[2];
	
	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_88D], data, 2) != 2) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	data[0] = (data[shift >> 3] >> (shift & 7)) & 0x01;
	if (invert)
		data[0] ^= 0x01;
	ucontrol->value.integer.value[0] = data[0];
	return 0;
}

static int snd_ice1712_ews88d_control_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int shift = kcontrol->private_value & 0xff;
	int invert = (kcontrol->private_value >> 8) & 1;
	unsigned char data[2], ndata[2];
	int change;

	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_88D], data, 2) != 2) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	ndata[shift >> 3] = data[shift >> 3] & ~(1 << (shift & 7));
	if (invert) {
		if (! ucontrol->value.integer.value[0])
			ndata[shift >> 3] |= (1 << (shift & 7));
	} else {
		if (ucontrol->value.integer.value[0])
			ndata[shift >> 3] |= (1 << (shift & 7));
	}
	change = (data[shift >> 3] != ndata[shift >> 3]);
	if (change && snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_88D], data, 2) != 2) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	return change;
}

#define EWS88D_CONTROL(xiface, xname, xshift, xinvert, xaccess) \
{ .iface = xiface,\
  .name = xname,\
  .access = xaccess,\
  .info = snd_ice1712_ews88d_control_info,\
  .get = snd_ice1712_ews88d_control_get,\
  .put = snd_ice1712_ews88d_control_put,\
  .private_value = xshift | (xinvert << 8),\
}

static struct snd_kcontrol_new snd_ice1712_ews88d_controls[] __devinitdata = {
	EWS88D_CONTROL(SNDRV_CTL_ELEM_IFACE_MIXER, "IEC958 Input Optical", 0, 1, 0), /* inverted */
	EWS88D_CONTROL(SNDRV_CTL_ELEM_IFACE_MIXER, "ADAT Output Optical", 1, 0, 0),
	EWS88D_CONTROL(SNDRV_CTL_ELEM_IFACE_MIXER, "ADAT External Master Clock", 2, 0, 0),
	EWS88D_CONTROL(SNDRV_CTL_ELEM_IFACE_MIXER, "Enable ADAT", 3, 0, 0),
	EWS88D_CONTROL(SNDRV_CTL_ELEM_IFACE_MIXER, "ADAT Through", 4, 1, 0),
};


/*
 * DMX 6Fire specific controls
 */

static int snd_ice1712_6fire_read_pca(struct snd_ice1712 *ice, unsigned char reg)
{
	unsigned char byte;
	snd_i2c_lock(ice->i2c);
	byte = reg;
	snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_6FIRE], &byte, 1);
	byte = 0;
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_6FIRE], &byte, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		printk(KERN_ERR "cannot read pca\n");
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	return byte;
}

static int snd_ice1712_6fire_write_pca(struct snd_ice1712 *ice, unsigned char reg, unsigned char data)
{
	unsigned char bytes[2];
	snd_i2c_lock(ice->i2c);
	bytes[0] = reg;
	bytes[1] = data;
	if (snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_6FIRE], bytes, 2) != 2) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	return 0;
}

#define snd_ice1712_6fire_control_info		snd_ctl_boolean_mono_info

static int snd_ice1712_6fire_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int shift = kcontrol->private_value & 0xff;
	int invert = (kcontrol->private_value >> 8) & 1;
	int data;
	
	if ((data = snd_ice1712_6fire_read_pca(ice, PCF9554_REG_OUTPUT)) < 0)
		return data;
	data = (data >> shift) & 1;
	if (invert)
		data ^= 1;
	ucontrol->value.integer.value[0] = data;
	return 0;
}

static int snd_ice1712_6fire_control_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int shift = kcontrol->private_value & 0xff;
	int invert = (kcontrol->private_value >> 8) & 1;
	int data, ndata;
	
	if ((data = snd_ice1712_6fire_read_pca(ice, PCF9554_REG_OUTPUT)) < 0)
		return data;
	ndata = data & ~(1 << shift);
	if (ucontrol->value.integer.value[0])
		ndata |= (1 << shift);
	if (invert)
		ndata ^= (1 << shift);
	if (data != ndata) {
		snd_ice1712_6fire_write_pca(ice, PCF9554_REG_OUTPUT, (unsigned char)ndata);
		return 1;
	}
	return 0;
}

static int snd_ice1712_6fire_select_input_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[4] = {
		"Internal", "Front Input", "Rear Input", "Wave Table"
	};
	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 4;
	if (uinfo->value.enumerated.item >= 4)
		uinfo->value.enumerated.item = 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}
     
static int snd_ice1712_6fire_select_input_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int data;
	
	if ((data = snd_ice1712_6fire_read_pca(ice, PCF9554_REG_OUTPUT)) < 0)
		return data;
	ucontrol->value.integer.value[0] = data & 3;
	return 0;
}

static int snd_ice1712_6fire_select_input_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int data, ndata;
	
	if ((data = snd_ice1712_6fire_read_pca(ice, PCF9554_REG_OUTPUT)) < 0)
		return data;
	ndata = data & ~3;
	ndata |= (ucontrol->value.integer.value[0] & 3);
	if (data != ndata) {
		snd_ice1712_6fire_write_pca(ice, PCF9554_REG_OUTPUT, (unsigned char)ndata);
		return 1;
	}
	return 0;
}


#define DMX6FIRE_CONTROL(xname, xshift, xinvert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,\
  .name = xname,\
  .info = snd_ice1712_6fire_control_info,\
  .get = snd_ice1712_6fire_control_get,\
  .put = snd_ice1712_6fire_control_put,\
  .private_value = xshift | (xinvert << 8),\
}

static struct snd_kcontrol_new snd_ice1712_6fire_controls[] __devinitdata = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Analog Input Select",
		.info = snd_ice1712_6fire_select_input_info,
		.get = snd_ice1712_6fire_select_input_get,
		.put = snd_ice1712_6fire_select_input_put,
	},
	DMX6FIRE_CONTROL("Front Digital Input Switch", 2, 1),
	// DMX6FIRE_CONTROL("Master Clock Select", 3, 0),
	DMX6FIRE_CONTROL("Optical Digital Input Switch", 4, 0),
	DMX6FIRE_CONTROL("Phono Analog Input Switch", 5, 0),
	DMX6FIRE_CONTROL("Breakbox LED", 6, 0),
};


static int __devinit snd_ice1712_ews_add_controls(struct snd_ice1712 *ice)
{
	unsigned int idx;
	int err;
	
	/* all terratec cards have spdif, but cs8427 module builds it's own controls */
	if (ice->cs8427 == NULL) {
		err = snd_ice1712_spdif_build_controls(ice);
		if (err < 0)
			return err;
	}

	/* ak4524 controls */
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWX2496:
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
	case ICE1712_SUBDEVICE_DMX6FIRE:
		err = snd_ice1712_akm4xxx_build_controls(ice);
		if (err < 0)
			return err;
		break;
	}

	/* card specific controls */
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWX2496:
		for (idx = 0; idx < ARRAY_SIZE(snd_ice1712_ewx2496_controls); idx++) {
			err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_ewx2496_controls[idx], ice));
			if (err < 0)
				return err;
		}
		break;
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
		err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_ews88mt_input_sense, ice));
		if (err < 0)
			return err;
		err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_ews88mt_output_sense, ice));
		if (err < 0)
			return err;
		break;
	case ICE1712_SUBDEVICE_EWS88D:
		for (idx = 0; idx < ARRAY_SIZE(snd_ice1712_ews88d_controls); idx++) {
			err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_ews88d_controls[idx], ice));
			if (err < 0)
				return err;
		}
		break;
	case ICE1712_SUBDEVICE_DMX6FIRE:
		for (idx = 0; idx < ARRAY_SIZE(snd_ice1712_6fire_controls); idx++) {
			err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_6fire_controls[idx], ice));
			if (err < 0)
				return err;
		}
		break;
	}
	return 0;
}


/* entry point */
struct snd_ice1712_card_info snd_ice1712_ews_cards[] __devinitdata = {
	{
		.subvendor = ICE1712_SUBDEVICE_EWX2496,
		.name = "TerraTec EWX24/96",
		.model = "ewx2496",
		.chip_init = snd_ice1712_ews_init,
		.build_controls = snd_ice1712_ews_add_controls,
	},
	{
		.subvendor = ICE1712_SUBDEVICE_EWS88MT,
		.name = "TerraTec EWS88MT",
		.model = "ews88mt",
		.chip_init = snd_ice1712_ews_init,
		.build_controls = snd_ice1712_ews_add_controls,
	},
	{
		.subvendor = ICE1712_SUBDEVICE_EWS88MT_NEW,
		.name = "TerraTec EWS88MT",
		.model = "ews88mt_new",
		.chip_init = snd_ice1712_ews_init,
		.build_controls = snd_ice1712_ews_add_controls,
	},
	{
		.subvendor = ICE1712_SUBDEVICE_PHASE88,
		.name = "TerraTec Phase88",
		.model = "phase88",
		.chip_init = snd_ice1712_ews_init,
		.build_controls = snd_ice1712_ews_add_controls,
	},
	{
		.subvendor = ICE1712_SUBDEVICE_EWS88D,
		.name = "TerraTec EWS88D",
		.model = "ews88d",
		.chip_init = snd_ice1712_ews_init,
		.build_controls = snd_ice1712_ews_add_controls,
	},
	{
		.subvendor = ICE1712_SUBDEVICE_DMX6FIRE,
		.name = "TerraTec DMX6Fire",
		.model = "dmx6fire",
		.chip_init = snd_ice1712_ews_init,
		.build_controls = snd_ice1712_ews_add_controls,
		.mpu401_1_name = "MIDI-Front DMX6fire",
		.mpu401_2_name = "Wavetable DMX6fire",
		.mpu401_2_info_flags = MPU401_INFO_OUTPUT,
	},
	{ } /* terminator */
};