summaryrefslogtreecommitdiffstats
path: root/sound/pci/au88x0/au88x0_pcm.c
blob: 5adc6b92ffabc9f893cc4b7f4c0b29f8428d5f96 (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
/*
 *  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 Library 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.
 */
 
/*
 * Vortex PCM ALSA driver.
 *
 * Supports ADB and WT DMA. Unfortunately, WT channels do not run yet.
 * It remains stuck,and DMA transfers do not happen. 
 */
#include <sound/asoundef.h>
#include <linux/time.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include "au88x0.h"

#define VORTEX_PCM_TYPE(x) (x->name[40])

/* hardware definition */
static struct snd_pcm_hardware snd_vortex_playback_hw_adb = {
	.info =
	    (SNDRV_PCM_INFO_MMAP | /* SNDRV_PCM_INFO_RESUME | */
	     SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_INTERLEAVED |
	     SNDRV_PCM_INFO_MMAP_VALID),
	.formats =
	    SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U8 |
	    SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW,
	.rates = SNDRV_PCM_RATE_CONTINUOUS,
	.rate_min = 5000,
	.rate_max = 48000,
	.channels_min = 1,
	.channels_max = 2,
	.buffer_bytes_max = 0x10000,
	.period_bytes_min = 0x20,
	.period_bytes_max = 0x1000,
	.periods_min = 2,
	.periods_max = 1024,
};

#ifndef CHIP_AU8820
static struct snd_pcm_hardware snd_vortex_playback_hw_a3d = {
	.info =
	    (SNDRV_PCM_INFO_MMAP | /* SNDRV_PCM_INFO_RESUME | */
	     SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_INTERLEAVED |
	     SNDRV_PCM_INFO_MMAP_VALID),
	.formats =
	    SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U8 |
	    SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW,
	.rates = SNDRV_PCM_RATE_CONTINUOUS,
	.rate_min = 5000,
	.rate_max = 48000,
	.channels_min = 1,
	.channels_max = 1,
	.buffer_bytes_max = 0x10000,
	.period_bytes_min = 0x100,
	.period_bytes_max = 0x1000,
	.periods_min = 2,
	.periods_max = 64,
};
#endif
static struct snd_pcm_hardware snd_vortex_playback_hw_spdif = {
	.info =
	    (SNDRV_PCM_INFO_MMAP | /* SNDRV_PCM_INFO_RESUME | */
	     SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_INTERLEAVED |
	     SNDRV_PCM_INFO_MMAP_VALID),
	.formats =
	    SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U8 |
	    SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE | SNDRV_PCM_FMTBIT_MU_LAW |
	    SNDRV_PCM_FMTBIT_A_LAW,
	.rates =
	    SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
	.rate_min = 32000,
	.rate_max = 48000,
	.channels_min = 1,
	.channels_max = 2,
	.buffer_bytes_max = 0x10000,
	.period_bytes_min = 0x100,
	.period_bytes_max = 0x1000,
	.periods_min = 2,
	.periods_max = 64,
};

#ifndef CHIP_AU8810
static struct snd_pcm_hardware snd_vortex_playback_hw_wt = {
	.info = (SNDRV_PCM_INFO_MMAP |
		 SNDRV_PCM_INFO_INTERLEAVED |
		 SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
	.formats = SNDRV_PCM_FMTBIT_S16_LE,
	.rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_CONTINUOUS,	// SNDRV_PCM_RATE_48000,
	.rate_min = 8000,
	.rate_max = 48000,
	.channels_min = 1,
	.channels_max = 2,
	.buffer_bytes_max = 0x10000,
	.period_bytes_min = 0x0400,
	.period_bytes_max = 0x1000,
	.periods_min = 2,
	.periods_max = 64,
};
#endif
#ifdef CHIP_AU8830
static unsigned int au8830_channels[3] = {
	1, 2, 4,
};

static struct snd_pcm_hw_constraint_list hw_constraints_au8830_channels = {
	.count = ARRAY_SIZE(au8830_channels),
	.list = au8830_channels,
	.mask = 0,
};
#endif

static void vortex_notify_pcm_vol_change(struct snd_card *card,
			struct snd_kcontrol *kctl, int activate)
{
	if (activate)
		kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
	else
		kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
	snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE |
				SNDRV_CTL_EVENT_MASK_INFO, &(kctl->id));
}

/* open callback */
static int snd_vortex_pcm_open(struct snd_pcm_substream *substream)
{
	vortex_t *vortex = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;
	int err;
	
	/* Force equal size periods */
	if ((err =
	     snd_pcm_hw_constraint_integer(runtime,
					   SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
		return err;
	/* Avoid PAGE_SIZE boundary to fall inside of a period. */
	if ((err =
	     snd_pcm_hw_constraint_pow2(runtime, 0,
					SNDRV_PCM_HW_PARAM_PERIOD_BYTES)) < 0)
		return err;

	snd_pcm_hw_constraint_step(runtime, 0,
					SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 64);

	if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
#ifndef CHIP_AU8820
		if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_A3D) {
			runtime->hw = snd_vortex_playback_hw_a3d;
		}
#endif
		if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_SPDIF) {
			runtime->hw = snd_vortex_playback_hw_spdif;
			switch (vortex->spdif_sr) {
			case 32000:
				runtime->hw.rates = SNDRV_PCM_RATE_32000;
				break;
			case 44100:
				runtime->hw.rates = SNDRV_PCM_RATE_44100;
				break;
			case 48000:
				runtime->hw.rates = SNDRV_PCM_RATE_48000;
				break;
			}
		}
		if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB
		    || VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_I2S)
			runtime->hw = snd_vortex_playback_hw_adb;
#ifdef CHIP_AU8830
		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
			VORTEX_IS_QUAD(vortex) &&
			VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB) {
			runtime->hw.channels_max = 4;
			snd_pcm_hw_constraint_list(runtime, 0,
				SNDRV_PCM_HW_PARAM_CHANNELS,
				&hw_constraints_au8830_channels);
		}
#endif
		substream->runtime->private_data = NULL;
	}
#ifndef CHIP_AU8810
	else {
		runtime->hw = snd_vortex_playback_hw_wt;
		substream->runtime->private_data = NULL;
	}
#endif
	return 0;
}

/* close callback */
static int snd_vortex_pcm_close(struct snd_pcm_substream *substream)
{
	//vortex_t *chip = snd_pcm_substream_chip(substream);
	stream_t *stream = (stream_t *) substream->runtime->private_data;

	// the hardware-specific codes will be here
	if (stream != NULL) {
		stream->substream = NULL;
		stream->nr_ch = 0;
	}
	substream->runtime->private_data = NULL;
	return 0;
}

/* hw_params callback */
static int
snd_vortex_pcm_hw_params(struct snd_pcm_substream *substream,
			 struct snd_pcm_hw_params *hw_params)
{
	vortex_t *chip = snd_pcm_substream_chip(substream);
	stream_t *stream = (stream_t *) (substream->runtime->private_data);
	int err;

	// Alloc buffer memory.
	err =
	    snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
	if (err < 0) {
		pr_err( "Vortex: pcm page alloc failed!\n");
		return err;
	}
	/*
	   pr_info( "Vortex: periods %d, period_bytes %d, channels = %d\n", params_periods(hw_params),
	   params_period_bytes(hw_params), params_channels(hw_params));
	 */
	spin_lock_irq(&chip->lock);
	// Make audio routes and config buffer DMA.
	if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
		int dma, type = VORTEX_PCM_TYPE(substream->pcm);
		/* Dealloc any routes. */
		if (stream != NULL)
			vortex_adb_allocroute(chip, stream->dma,
					      stream->nr_ch, stream->dir,
					      stream->type,
					      substream->number);
		/* Alloc routes. */
		dma =
		    vortex_adb_allocroute(chip, -1,
					  params_channels(hw_params),
					  substream->stream, type,
					  substream->number);
		if (dma < 0) {
			spin_unlock_irq(&chip->lock);
			return dma;
		}
		stream = substream->runtime->private_data = &chip->dma_adb[dma];
		stream->substream = substream;
		/* Setup Buffers. */
		vortex_adbdma_setbuffers(chip, dma,
					 params_period_bytes(hw_params),
					 params_periods(hw_params));
		if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB) {
			chip->pcm_vol[substream->number].active = 1;
			vortex_notify_pcm_vol_change(chip->card,
				chip->pcm_vol[substream->number].kctl, 1);
		}
	}
#ifndef CHIP_AU8810
	else {
		/* if (stream != NULL)
		   vortex_wt_allocroute(chip, substream->number, 0); */
		vortex_wt_allocroute(chip, substream->number,
				     params_channels(hw_params));
		stream = substream->runtime->private_data =
		    &chip->dma_wt[substream->number];
		stream->dma = substream->number;
		stream->substream = substream;
		vortex_wtdma_setbuffers(chip, substream->number,
					params_period_bytes(hw_params),
					params_periods(hw_params));
	}
#endif
	spin_unlock_irq(&chip->lock);
	return 0;
}

/* hw_free callback */
static int snd_vortex_pcm_hw_free(struct snd_pcm_substream *substream)
{
	vortex_t *chip = snd_pcm_substream_chip(substream);
	stream_t *stream = (stream_t *) (substream->runtime->private_data);

	spin_lock_irq(&chip->lock);
	// Delete audio routes.
	if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
		if (stream != NULL) {
			if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB) {
				chip->pcm_vol[substream->number].active = 0;
				vortex_notify_pcm_vol_change(chip->card,
					chip->pcm_vol[substream->number].kctl,
					0);
			}
			vortex_adb_allocroute(chip, stream->dma,
					      stream->nr_ch, stream->dir,
					      stream->type,
					      substream->number);
		}
	}
#ifndef CHIP_AU8810
	else {
		if (stream != NULL)
			vortex_wt_allocroute(chip, stream->dma, 0);
	}
#endif
	substream->runtime->private_data = NULL;
	spin_unlock_irq(&chip->lock);

	return snd_pcm_lib_free_pages(substream);
}

/* prepare callback */
static int snd_vortex_pcm_prepare(struct snd_pcm_substream *substream)
{
	vortex_t *chip = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;
	stream_t *stream = (stream_t *) substream->runtime->private_data;
	int dma = stream->dma, fmt, dir;

	// set up the hardware with the current configuration.
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		dir = 1;
	else
		dir = 0;
	fmt = vortex_alsafmt_aspfmt(runtime->format);
	spin_lock_irq(&chip->lock);
	if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
		vortex_adbdma_setmode(chip, dma, 1, dir, fmt,
				runtime->channels == 1 ? 0 : 1, 0);
		vortex_adbdma_setstartbuffer(chip, dma, 0);
		if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_SPDIF)
			vortex_adb_setsrc(chip, dma, runtime->rate, dir);
	}
#ifndef CHIP_AU8810
	else {
		vortex_wtdma_setmode(chip, dma, 1, fmt, 0, 0);
		// FIXME: Set rate (i guess using vortex_wt_writereg() somehow).
		vortex_wtdma_setstartbuffer(chip, dma, 0);
	}
#endif
	spin_unlock_irq(&chip->lock);
	return 0;
}

/* trigger callback */
static int snd_vortex_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
	vortex_t *chip = snd_pcm_substream_chip(substream);
	stream_t *stream = (stream_t *) substream->runtime->private_data;
	int dma = stream->dma;

	spin_lock(&chip->lock);
	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
		// do something to start the PCM engine
		//printk(KERN_INFO "vortex: start %d\n", dma);
		stream->fifo_enabled = 1;
		if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
			vortex_adbdma_resetup(chip, dma);
			vortex_adbdma_startfifo(chip, dma);
		}
#ifndef CHIP_AU8810
		else {
			pr_info( "vortex: wt start %d\n", dma);
			vortex_wtdma_startfifo(chip, dma);
		}
#endif
		break;
	case SNDRV_PCM_TRIGGER_STOP:
		// do something to stop the PCM engine
		//printk(KERN_INFO "vortex: stop %d\n", dma);
		stream->fifo_enabled = 0;
		if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
			vortex_adbdma_stopfifo(chip, dma);
#ifndef CHIP_AU8810
		else {
			pr_info( "vortex: wt stop %d\n", dma);
			vortex_wtdma_stopfifo(chip, dma);
		}
#endif
		break;
	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
		//printk(KERN_INFO "vortex: pause %d\n", dma);
		if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
			vortex_adbdma_pausefifo(chip, dma);
#ifndef CHIP_AU8810
		else
			vortex_wtdma_pausefifo(chip, dma);
#endif
		break;
	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
		//printk(KERN_INFO "vortex: resume %d\n", dma);
		if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
			vortex_adbdma_resumefifo(chip, dma);
#ifndef CHIP_AU8810
		else
			vortex_wtdma_resumefifo(chip, dma);
#endif
		break;
	default:
		spin_unlock(&chip->lock);
		return -EINVAL;
	}
	spin_unlock(&chip->lock);
	return 0;
}

/* pointer callback */
static snd_pcm_uframes_t snd_vortex_pcm_pointer(struct snd_pcm_substream *substream)
{
	vortex_t *chip = snd_pcm_substream_chip(substream);
	stream_t *stream = (stream_t *) substream->runtime->private_data;
	int dma = stream->dma;
	snd_pcm_uframes_t current_ptr = 0;

	spin_lock(&chip->lock);
	if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
		current_ptr = vortex_adbdma_getlinearpos(chip, dma);
#ifndef CHIP_AU8810
	else
		current_ptr = vortex_wtdma_getlinearpos(chip, dma);
#endif
	//printk(KERN_INFO "vortex: pointer = 0x%x\n", current_ptr);
	spin_unlock(&chip->lock);
	return (bytes_to_frames(substream->runtime, current_ptr));
}

/* operators */
static struct snd_pcm_ops snd_vortex_playback_ops = {
	.open = snd_vortex_pcm_open,
	.close = snd_vortex_pcm_close,
	.ioctl = snd_pcm_lib_ioctl,
	.hw_params = snd_vortex_pcm_hw_params,
	.hw_free = snd_vortex_pcm_hw_free,
	.prepare = snd_vortex_pcm_prepare,
	.trigger = snd_vortex_pcm_trigger,
	.pointer = snd_vortex_pcm_pointer,
	.page = snd_pcm_sgbuf_ops_page,
};

/*
*  definitions of capture are omitted here...
*/

static char *vortex_pcm_prettyname[VORTEX_PCM_LAST] = {
	CARD_NAME " ADB",
	CARD_NAME " SPDIF",
	CARD_NAME " A3D",
	CARD_NAME " WT",
	CARD_NAME " I2S",
};
static char *vortex_pcm_name[VORTEX_PCM_LAST] = {
	"adb",
	"spdif",
	"a3d",
	"wt",
	"i2s",
};

/* SPDIF kcontrol */

static int snd_vortex_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_vortex_spdif_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.iec958.status[0] = 0xff;
	ucontrol->value.iec958.status[1] = 0xff;
	ucontrol->value.iec958.status[2] = 0xff;
	ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS;
	return 0;
}

static int snd_vortex_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
	ucontrol->value.iec958.status[0] = 0x00;
	ucontrol->value.iec958.status[1] = IEC958_AES1_CON_ORIGINAL|IEC958_AES1_CON_DIGDIGCONV_ID;
	ucontrol->value.iec958.status[2] = 0x00;
	switch (vortex->spdif_sr) {
	case 32000: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_32000; break;
	case 44100: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_44100; break;
	case 48000: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_48000; break;
	}
	return 0;
}

static int snd_vortex_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
	int spdif_sr = 48000;
	switch (ucontrol->value.iec958.status[3] & IEC958_AES3_CON_FS) {
	case IEC958_AES3_CON_FS_32000: spdif_sr = 32000; break;
	case IEC958_AES3_CON_FS_44100: spdif_sr = 44100; break;
	case IEC958_AES3_CON_FS_48000: spdif_sr = 48000; break;
	}
	if (spdif_sr == vortex->spdif_sr)
		return 0;
	vortex->spdif_sr = spdif_sr;
	vortex_spdif_init(vortex, vortex->spdif_sr, 1);
	return 1;
}

/* spdif controls */
static struct snd_kcontrol_new snd_vortex_mixer_spdif[] = {
	{
		.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
		.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
		.info =		snd_vortex_spdif_info,
		.get =		snd_vortex_spdif_get,
		.put =		snd_vortex_spdif_put,
	},
	{
		.access =	SNDRV_CTL_ELEM_ACCESS_READ,
		.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
		.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
		.info =		snd_vortex_spdif_info,
		.get =		snd_vortex_spdif_mask_get
	},
};

/* subdevice PCM Volume control */

static int snd_vortex_pcm_vol_info(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_info *uinfo)
{
	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = (VORTEX_IS_QUAD(vortex) ? 4 : 2);
	uinfo->value.integer.min = -128;
	uinfo->value.integer.max = 32;
	return 0;
}

static int snd_vortex_pcm_vol_get(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	int i;
	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
	int subdev = kcontrol->id.subdevice;
	struct pcm_vol *p = &vortex->pcm_vol[subdev];
	int max_chn = (VORTEX_IS_QUAD(vortex) ? 4 : 2);
	for (i = 0; i < max_chn; i++)
		ucontrol->value.integer.value[i] = p->vol[i];
	return 0;
}

static int snd_vortex_pcm_vol_put(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	int i;
	int changed = 0;
	int mixin;
	unsigned char vol;
	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
	int subdev = kcontrol->id.subdevice;
	struct pcm_vol *p = &vortex->pcm_vol[subdev];
	int max_chn = (VORTEX_IS_QUAD(vortex) ? 4 : 2);
	for (i = 0; i < max_chn; i++) {
		if (p->vol[i] != ucontrol->value.integer.value[i]) {
			p->vol[i] = ucontrol->value.integer.value[i];
			if (p->active) {
				switch (vortex->dma_adb[p->dma].nr_ch) {
				case 1:
					mixin = p->mixin[0];
					break;
				case 2:
				default:
					mixin = p->mixin[(i < 2) ? i : (i - 2)];
					break;
				case 4:
					mixin = p->mixin[i];
					break;
				}
				vol = p->vol[i];
				vortex_mix_setinputvolumebyte(vortex,
					vortex->mixplayb[i], mixin, vol);
			}
			changed = 1;
		}
	}
	return changed;
}

static const DECLARE_TLV_DB_MINMAX(vortex_pcm_vol_db_scale, -9600, 2400);

static struct snd_kcontrol_new snd_vortex_pcm_vol = {
	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
	.name = "PCM Playback Volume",
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
		SNDRV_CTL_ELEM_ACCESS_TLV_READ |
		SNDRV_CTL_ELEM_ACCESS_INACTIVE,
	.info = snd_vortex_pcm_vol_info,
	.get = snd_vortex_pcm_vol_get,
	.put = snd_vortex_pcm_vol_put,
	.tlv = { .p = vortex_pcm_vol_db_scale },
};

/* create a pcm device */
static int snd_vortex_new_pcm(vortex_t *chip, int idx, int nr)
{
	struct snd_pcm *pcm;
	struct snd_kcontrol *kctl;
	int i;
	int err, nr_capt;

	if (!chip || idx < 0 || idx >= VORTEX_PCM_LAST)
		return -ENODEV;

	/* idx indicates which kind of PCM device. ADB, SPDIF, I2S and A3D share the 
	 * same dma engine. WT uses it own separate dma engine which can't capture. */
	if (idx == VORTEX_PCM_ADB)
		nr_capt = nr;
	else
		nr_capt = 0;
	err = snd_pcm_new(chip->card, vortex_pcm_prettyname[idx], idx, nr,
			  nr_capt, &pcm);
	if (err < 0)
		return err;
	snprintf(pcm->name, sizeof(pcm->name),
		"%s %s", CARD_NAME_SHORT, vortex_pcm_name[idx]);
	chip->pcm[idx] = pcm;
	// This is an evil hack, but it saves a lot of duplicated code.
	VORTEX_PCM_TYPE(pcm) = idx;
	pcm->private_data = chip;
	/* set operators */
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
			&snd_vortex_playback_ops);
	if (idx == VORTEX_PCM_ADB)
		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
				&snd_vortex_playback_ops);
	
	/* pre-allocation of Scatter-Gather buffers */
	
	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
					      snd_dma_pci_data(chip->pci_dev),
					      0x10000, 0x10000);

	switch (VORTEX_PCM_TYPE(pcm)) {
	case VORTEX_PCM_ADB:
		err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
					     snd_pcm_std_chmaps,
					     VORTEX_IS_QUAD(chip) ? 4 : 2,
					     0, NULL);
		if (err < 0)
			return err;
		err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_CAPTURE,
					     snd_pcm_std_chmaps, 2, 0, NULL);
		if (err < 0)
			return err;
		break;
#ifdef CHIP_AU8830
	case VORTEX_PCM_A3D:
		err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
					     snd_pcm_std_chmaps, 1, 0, NULL);
		if (err < 0)
			return err;
		break;
#endif
	}

	if (VORTEX_PCM_TYPE(pcm) == VORTEX_PCM_SPDIF) {
		for (i = 0; i < ARRAY_SIZE(snd_vortex_mixer_spdif); i++) {
			kctl = snd_ctl_new1(&snd_vortex_mixer_spdif[i], chip);
			if (!kctl)
				return -ENOMEM;
			if ((err = snd_ctl_add(chip->card, kctl)) < 0)
				return err;
		}
	}
	if (VORTEX_PCM_TYPE(pcm) == VORTEX_PCM_ADB) {
		for (i = 0; i < NR_PCM; i++) {
			chip->pcm_vol[i].active = 0;
			chip->pcm_vol[i].dma = -1;
			kctl = snd_ctl_new1(&snd_vortex_pcm_vol, chip);
			if (!kctl)
				return -ENOMEM;
			chip->pcm_vol[i].kctl = kctl;
			kctl->id.device = 0;
			kctl->id.subdevice = i;
			err = snd_ctl_add(chip->card, kctl);
			if (err < 0)
				return err;
		}
	}
	return 0;
}