aboutsummaryrefslogblamecommitdiffstats
path: root/sound/pci/ice1712/maya44.c
blob: 726fd4b92e19e8d564adef229c9c5201a0785963 (plain) (tree)
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




























































































































































































































































































































































                                                                               
                                          












































                                                                           

                                                                      





























































































































































































































































































































































































                                                                               
/*
 *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
 *
 *   Lowlevel functions for ESI Maya44 cards
 *
 *	Copyright (c) 2009 Takashi Iwai <tiwai@suse.de>
 *	Based on the patches by Rainer Zimmermann <mail@lightshed.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 <linux/init.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/tlv.h>

#include "ice1712.h"
#include "envy24ht.h"
#include "maya44.h"

/* WM8776 register indexes */
#define WM8776_REG_HEADPHONE_L		0x00
#define WM8776_REG_HEADPHONE_R		0x01
#define WM8776_REG_HEADPHONE_MASTER	0x02
#define WM8776_REG_DAC_ATTEN_L		0x03
#define WM8776_REG_DAC_ATTEN_R		0x04
#define WM8776_REG_DAC_ATTEN_MASTER	0x05
#define WM8776_REG_DAC_PHASE		0x06
#define WM8776_REG_DAC_CONTROL		0x07
#define WM8776_REG_DAC_MUTE		0x08
#define WM8776_REG_DAC_DEEMPH		0x09
#define WM8776_REG_DAC_IF_CONTROL	0x0a
#define WM8776_REG_ADC_IF_CONTROL	0x0b
#define WM8776_REG_MASTER_MODE_CONTROL	0x0c
#define WM8776_REG_POWERDOWN		0x0d
#define WM8776_REG_ADC_ATTEN_L		0x0e
#define WM8776_REG_ADC_ATTEN_R		0x0f
#define WM8776_REG_ADC_ALC1		0x10
#define WM8776_REG_ADC_ALC2		0x11
#define WM8776_REG_ADC_ALC3		0x12
#define WM8776_REG_ADC_NOISE_GATE	0x13
#define WM8776_REG_ADC_LIMITER		0x14
#define WM8776_REG_ADC_MUX		0x15
#define WM8776_REG_OUTPUT_MUX		0x16
#define WM8776_REG_RESET		0x17

#define WM8776_NUM_REGS			0x18

/* clock ratio identifiers for snd_wm8776_set_rate() */
#define WM8776_CLOCK_RATIO_128FS	0
#define WM8776_CLOCK_RATIO_192FS	1
#define WM8776_CLOCK_RATIO_256FS	2
#define WM8776_CLOCK_RATIO_384FS	3
#define WM8776_CLOCK_RATIO_512FS	4
#define WM8776_CLOCK_RATIO_768FS	5

enum { WM_VOL_HP, WM_VOL_DAC, WM_VOL_ADC, WM_NUM_VOLS };
enum { WM_SW_DAC, WM_SW_BYPASS, WM_NUM_SWITCHES };

struct snd_wm8776 {
	unsigned char addr;
	unsigned short regs[WM8776_NUM_REGS];
	unsigned char volumes[WM_NUM_VOLS][2];
	unsigned int switch_bits;
};

struct snd_maya44 {
	struct snd_ice1712 *ice;
	struct snd_wm8776 wm[2];
	struct mutex mutex;
};


/* write the given register and save the data to the cache */
static void wm8776_write(struct snd_ice1712 *ice, struct snd_wm8776 *wm,
			 unsigned char reg, unsigned short val)
{
	/*
	 * WM8776 registers are up to 9 bits wide, bit 8 is placed in the LSB
	 * of the address field
	 */
	snd_vt1724_write_i2c(ice, wm->addr,
			     (reg << 1) | ((val >> 8) & 1),
			     val & 0xff);
	wm->regs[reg] = val;
}

/*
 * update the given register with and/or mask and save the data to the cache
 */
static int wm8776_write_bits(struct snd_ice1712 *ice, struct snd_wm8776 *wm,
			     unsigned char reg,
			     unsigned short mask, unsigned short val)
{
	val |= wm->regs[reg] & ~mask;
	if (val != wm->regs[reg]) {
		wm8776_write(ice, wm, reg, val);
		return 1;
	}
	return 0;
}


/*
 * WM8776 volume controls
 */

struct maya_vol_info {
	unsigned int maxval;		/* volume range: 0..maxval */
	unsigned char regs[2];		/* left and right registers */
	unsigned short mask;		/* value mask */
	unsigned short offset;		/* zero-value offset */
	unsigned short mute;		/* mute bit */
	unsigned short update;		/* update bits */
	unsigned char mux_bits[2];	/* extra bits for ADC mute */
};

static struct maya_vol_info vol_info[WM_NUM_VOLS] = {
	[WM_VOL_HP] = {
		.maxval = 80,
		.regs = { WM8776_REG_HEADPHONE_L, WM8776_REG_HEADPHONE_R },
		.mask = 0x7f,
		.offset = 0x30,
		.mute = 0x00,
		.update = 0x180,	/* update and zero-cross enable */
	},
	[WM_VOL_DAC] = {
		.maxval = 255,
		.regs = { WM8776_REG_DAC_ATTEN_L, WM8776_REG_DAC_ATTEN_R },
		.mask = 0xff,
		.offset = 0x01,
		.mute = 0x00,
		.update = 0x100,	/* zero-cross enable */
	},
	[WM_VOL_ADC] = {
		.maxval = 91,
		.regs = { WM8776_REG_ADC_ATTEN_L, WM8776_REG_ADC_ATTEN_R },
		.mask = 0xff,
		.offset = 0xa5,
		.mute = 0xa5,
		.update = 0x100,	/* update */
		.mux_bits = { 0x80, 0x40 }, /* ADCMUX bits */
	},
};

/*
 * dB tables
 */
/* headphone output: mute, -73..+6db (1db step) */
static const DECLARE_TLV_DB_SCALE(db_scale_hp, -7400, 100, 1);
/* DAC output: mute, -127..0db (0.5db step) */
static const DECLARE_TLV_DB_SCALE(db_scale_dac, -12750, 50, 1);
/* ADC gain: mute, -21..+24db (0.5db step) */
static const DECLARE_TLV_DB_SCALE(db_scale_adc, -2100, 50, 1);

static int maya_vol_info(struct snd_kcontrol *kcontrol,
			 struct snd_ctl_elem_info *uinfo)
{
	unsigned int idx = kcontrol->private_value;
	struct maya_vol_info *vol = &vol_info[idx];

	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = vol->maxval;
	return 0;
}

static int maya_vol_get(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_value *ucontrol)
{
	struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
	struct snd_wm8776 *wm =
		&chip->wm[snd_ctl_get_ioff(kcontrol, &ucontrol->id)];
	unsigned int idx = kcontrol->private_value;

	mutex_lock(&chip->mutex);
	ucontrol->value.integer.value[0] = wm->volumes[idx][0];
	ucontrol->value.integer.value[1] = wm->volumes[idx][1];
	mutex_unlock(&chip->mutex);
	return 0;
}

static int maya_vol_put(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_value *ucontrol)
{
	struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
	struct snd_wm8776 *wm =
		&chip->wm[snd_ctl_get_ioff(kcontrol, &ucontrol->id)];
	unsigned int idx = kcontrol->private_value;
	struct maya_vol_info *vol = &vol_info[idx];
	unsigned int val, data;
	int ch, changed = 0;

	mutex_lock(&chip->mutex);
	for (ch = 0; ch < 2; ch++) {
		val = ucontrol->value.integer.value[ch];
		if (val > vol->maxval)
			val = vol->maxval;
		if (val == wm->volumes[idx][ch])
			continue;
		if (!val)
			data = vol->mute;
		else
			data = (val - 1) + vol->offset;
		data |= vol->update;
		changed |= wm8776_write_bits(chip->ice, wm, vol->regs[ch],
					     vol->mask | vol->update, data);
		if (vol->mux_bits[ch])
			wm8776_write_bits(chip->ice, wm, WM8776_REG_ADC_MUX,
					  vol->mux_bits[ch],
					  val ? 0 : vol->mux_bits[ch]);
		wm->volumes[idx][ch] = val;
	}
	mutex_unlock(&chip->mutex);
	return changed;
}

/*
 * WM8776 switch controls
 */

#define COMPOSE_SW_VAL(idx, reg, mask)	((idx) | ((reg) << 8) | ((mask) << 16))
#define GET_SW_VAL_IDX(val)	((val) & 0xff)
#define GET_SW_VAL_REG(val)	(((val) >> 8) & 0xff)
#define GET_SW_VAL_MASK(val)	(((val) >> 16) & 0xff)

#define maya_sw_info	snd_ctl_boolean_mono_info

static int maya_sw_get(struct snd_kcontrol *kcontrol,
		       struct snd_ctl_elem_value *ucontrol)
{
	struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
	struct snd_wm8776 *wm =
		&chip->wm[snd_ctl_get_ioff(kcontrol, &ucontrol->id)];
	unsigned int idx = GET_SW_VAL_IDX(kcontrol->private_value);

	ucontrol->value.integer.value[0] = (wm->switch_bits >> idx) & 1;
	return 0;
}

static int maya_sw_put(struct snd_kcontrol *kcontrol,
		       struct snd_ctl_elem_value *ucontrol)
{
	struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
	struct snd_wm8776 *wm =
		&chip->wm[snd_ctl_get_ioff(kcontrol, &ucontrol->id)];
	unsigned int idx = GET_SW_VAL_IDX(kcontrol->private_value);
	unsigned int mask, val;
	int changed;

	mutex_lock(&chip->mutex);
	mask = 1 << idx;
	wm->switch_bits &= ~mask;
	val = ucontrol->value.integer.value[0];
	if (val)
		wm->switch_bits |= mask;
	mask = GET_SW_VAL_MASK(kcontrol->private_value);
	changed = wm8776_write_bits(chip->ice, wm,
				    GET_SW_VAL_REG(kcontrol->private_value),
				    mask, val ? mask : 0);
	mutex_unlock(&chip->mutex);
	return changed;
}

/*
 * GPIO pins (known ones for maya44)
 */
#define GPIO_PHANTOM_OFF	2
#define GPIO_MIC_RELAY		4
#define GPIO_SPDIF_IN_INV	5
#define GPIO_MUST_BE_0		7

/*
 * GPIO switch controls
 */

#define COMPOSE_GPIO_VAL(shift, inv)	((shift) | ((inv) << 8))
#define GET_GPIO_VAL_SHIFT(val)		((val) & 0xff)
#define GET_GPIO_VAL_INV(val)		(((val) >> 8) & 1)

static int maya_set_gpio_bits(struct snd_ice1712 *ice, unsigned int mask,
			      unsigned int bits)
{
	unsigned int data;
	data = snd_ice1712_gpio_read(ice);
	if ((data & mask) == bits)
		return 0;
	snd_ice1712_gpio_write(ice, (data & ~mask) | bits);
	return 1;
}

#define maya_gpio_sw_info	snd_ctl_boolean_mono_info

static int maya_gpio_sw_get(struct snd_kcontrol *kcontrol,
			    struct snd_ctl_elem_value *ucontrol)
{
	struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
	unsigned int shift = GET_GPIO_VAL_SHIFT(kcontrol->private_value);
	unsigned int val;

	val = (snd_ice1712_gpio_read(chip->ice) >> shift) & 1;
	if (GET_GPIO_VAL_INV(kcontrol->private_value))
		val = !val;
	ucontrol->value.integer.value[0] = val;
	return 0;
}

static int maya_gpio_sw_put(struct snd_kcontrol *kcontrol,
			    struct snd_ctl_elem_value *ucontrol)
{
	struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
	unsigned int shift = GET_GPIO_VAL_SHIFT(kcontrol->private_value);
	unsigned int val, mask;
	int changed;

	mutex_lock(&chip->mutex);
	mask = 1 << shift;
	val = ucontrol->value.integer.value[0];
	if (GET_GPIO_VAL_INV(kcontrol->private_value))
		val = !val;
	val = val ? mask : 0;
	changed = maya_set_gpio_bits(chip->ice, mask, val);
	mutex_unlock(&chip->mutex);
	return changed;
}

/*
 * capture source selection
 */

/* known working input slots (0-4) */
#define MAYA_LINE_IN	1	/* in-2 */
#define MAYA_MIC_IN	3	/* in-4 */

static void wm8776_select_input(struct snd_maya44 *chip, int idx, int line)
{
	wm8776_write_bits(chip->ice, &chip->wm[idx], WM8776_REG_ADC_MUX,
			  0x1f, 1 << line);
}

static int maya_rec_src_info(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_info *uinfo)
{
	static char *texts[] = { "Line", "Mic" };

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

static int maya_rec_src_get(struct snd_kcontrol *kcontrol,
			    struct snd_ctl_elem_value *ucontrol)
{
	struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
	int sel;

	if (snd_ice1712_gpio_read(chip->ice) & (1 << GPIO_MIC_RELAY))
		sel = 1;
	else
		sel = 0;
	ucontrol->value.enumerated.item[0] = sel;
	return 0;
}

static int maya_rec_src_put(struct snd_kcontrol *kcontrol,
			    struct snd_ctl_elem_value *ucontrol)
{
	struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
	int sel = ucontrol->value.enumerated.item[0];
	int changed;

	mutex_lock(&chip->mutex);
	changed = maya_set_gpio_bits(chip->ice, 1 << GPIO_MIC_RELAY,
				     sel ? (1 << GPIO_MIC_RELAY) : 0);
	wm8776_select_input(chip, 0, sel ? MAYA_MIC_IN : MAYA_LINE_IN);
	mutex_unlock(&chip->mutex);
	return changed;
}

/*
 * Maya44 routing switch settings have different meanings than the standard
 * ice1724 switches as defined in snd_vt1724_pro_route_info (ice1724.c).
 */
static int maya_pb_route_info(struct snd_kcontrol *kcontrol,
			      struct snd_ctl_elem_info *uinfo)
{
	static char *texts[] = {
		"PCM Out", /* 0 */
		"Input 1", "Input 2", "Input 3", "Input 4"
	};

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

static int maya_pb_route_shift(int idx)
{
	static const unsigned char shift[10] =
		{ 8, 20, 0, 3, 11, 23, 14, 26, 17, 29 };
	return shift[idx % 10];
}

static int maya_pb_route_get(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
	int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	ucontrol->value.enumerated.item[0] =
		snd_ice1724_get_route_val(chip->ice, maya_pb_route_shift(idx));
	return 0;
}

static int maya_pb_route_put(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
	int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	return snd_ice1724_put_route_val(chip->ice,
					 ucontrol->value.enumerated.item[0],
					 maya_pb_route_shift(idx));
}


/*
 * controls to be added
 */

static struct snd_kcontrol_new maya_controls[] __devinitdata = {
	{
		.name = "Crossmix Playback Volume",
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
			SNDRV_CTL_ELEM_ACCESS_TLV_READ,
		.info = maya_vol_info,
		.get = maya_vol_get,
		.put = maya_vol_put,
		.tlv = { .p = db_scale_hp },
		.private_value = WM_VOL_HP,
		.count = 2,
	},
	{
		.name = "PCM Playback Volume",
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
			SNDRV_CTL_ELEM_ACCESS_TLV_READ,
		.info = maya_vol_info,
		.get = maya_vol_get,
		.put = maya_vol_put,
		.tlv = { .p = db_scale_dac },
		.private_value = WM_VOL_DAC,
		.count = 2,
	},
	{
		.name = "Line Capture Volume",
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
			SNDRV_CTL_ELEM_ACCESS_TLV_READ,
		.info = maya_vol_info,
		.get = maya_vol_get,
		.put = maya_vol_put,
		.tlv = { .p = db_scale_adc },
		.private_value = WM_VOL_ADC,
		.count = 2,
	},
	{
		.name = "PCM Playback Switch",
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.info = maya_sw_info,
		.get = maya_sw_get,
		.put = maya_sw_put,
		.private_value = COMPOSE_SW_VAL(WM_SW_DAC,
						WM8776_REG_OUTPUT_MUX, 0x01),
		.count = 2,
	},
	{
		.name = "Bypass Playback Switch",
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.info = maya_sw_info,
		.get = maya_sw_get,
		.put = maya_sw_put,
		.private_value = COMPOSE_SW_VAL(WM_SW_BYPASS,
						WM8776_REG_OUTPUT_MUX, 0x04),
		.count = 2,
	},
	{
		.name = "Capture Source",
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.info = maya_rec_src_info,
		.get = maya_rec_src_get,
		.put = maya_rec_src_put,
	},
	{
		.name = "Mic Phantom Power Switch",
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.info = maya_gpio_sw_info,
		.get = maya_gpio_sw_get,
		.put = maya_gpio_sw_put,
		.private_value = COMPOSE_GPIO_VAL(GPIO_PHANTOM_OFF, 1),
	},
	{
		.name = "SPDIF Capture Switch",
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.info = maya_gpio_sw_info,
		.get = maya_gpio_sw_get,
		.put = maya_gpio_sw_put,
		.private_value = COMPOSE_GPIO_VAL(GPIO_SPDIF_IN_INV, 1),
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "H/W Playback Route",
		.info = maya_pb_route_info,
		.get = maya_pb_route_get,
		.put = maya_pb_route_put,
		.count = 4,  /* FIXME: do controls 5-9 have any meaning? */
	},
};

static int __devinit maya44_add_controls(struct snd_ice1712 *ice)
{
	int err, i;

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


/*
 * initialize a wm8776 chip
 */
static void __devinit wm8776_init(struct snd_ice1712 *ice,
				  struct snd_wm8776 *wm, unsigned int addr)
{
	static const unsigned short inits_wm8776[] = {
		0x02, 0x100, /* R2: headphone L+R muted + update */
		0x05, 0x100, /* R5: DAC output L+R muted + update */
		0x06, 0x000, /* R6: DAC output phase normal */
		0x07, 0x091, /* R7: DAC enable zero cross detection,
				normal output */
		0x08, 0x000, /* R8: DAC soft mute off */
		0x09, 0x000, /* R9: no deemph, DAC zero detect disabled */
		0x0a, 0x022, /* R10: DAC I2C mode, std polarities, 24bit */
		0x0b, 0x022, /* R11: ADC I2C mode, std polarities, 24bit,
				highpass filter enabled */
		0x0c, 0x042, /* R12: ADC+DAC slave, ADC+DAC 44,1kHz */
		0x0d, 0x000, /* R13: all power up */
		0x0e, 0x100, /* R14: ADC left muted,
				enable zero cross detection */
		0x0f, 0x100, /* R15: ADC right muted,
				enable zero cross detection */
			     /* R16: ALC...*/
		0x11, 0x000, /* R17: disable ALC */
			     /* R18: ALC...*/
			     /* R19: noise gate...*/
		0x15, 0x000, /* R21: ADC input mux init, mute all inputs */
		0x16, 0x001, /* R22: output mux, select DAC */
		0xff, 0xff
	};

	const unsigned short *ptr;
	unsigned char reg;
	unsigned short data;

	wm->addr = addr;
	/* enable DAC output; mute bypass, aux & all inputs */
	wm->switch_bits = (1 << WM_SW_DAC);

	ptr = inits_wm8776;
	while (*ptr != 0xff) {
		reg = *ptr++;
		data = *ptr++;
		wm8776_write(ice, wm, reg, data);
	}
}


/*
 * change the rate on the WM8776 codecs.
 * this assumes that the VT17xx's rate is changed by the calling function.
 * NOTE: even though the WM8776's are running in slave mode and rate
 * selection is automatic, we need to call snd_wm8776_set_rate() here
 * to make sure some flags are set correctly.
 */
static void set_rate(struct snd_ice1712 *ice, unsigned int rate)
{
	struct snd_maya44 *chip = ice->spec;
	unsigned int ratio, adc_ratio, val;
	int i;

	switch (rate) {
	case 192000:
		ratio = WM8776_CLOCK_RATIO_128FS;
		break;
	case 176400:
		ratio = WM8776_CLOCK_RATIO_128FS;
		break;
	case 96000:
		ratio = WM8776_CLOCK_RATIO_256FS;
		break;
	case 88200:
		ratio = WM8776_CLOCK_RATIO_384FS;
		break;
	case 48000:
		ratio = WM8776_CLOCK_RATIO_512FS;
		break;
	case 44100:
		ratio = WM8776_CLOCK_RATIO_512FS;
		break;
	case 32000:
		ratio = WM8776_CLOCK_RATIO_768FS;
		break;
	case 0:
		/* no hint - S/PDIF input is master, simply return */
		return;
	default:
		snd_BUG();
		return;
	}

	/*
	 * this currently sets the same rate for ADC and DAC, but limits
	 * ADC rate to 256X (96kHz). For 256X mode (96kHz), this sets ADC
	 * oversampling to 64x, as recommended by WM8776 datasheet.
	 * Setting the rate is not really necessary in slave mode.
	 */
	adc_ratio = ratio;
	if (adc_ratio < WM8776_CLOCK_RATIO_256FS)
		adc_ratio = WM8776_CLOCK_RATIO_256FS;

	val = adc_ratio;
	if (adc_ratio == WM8776_CLOCK_RATIO_256FS)
		val |= 8;
	val |= ratio << 4;

	mutex_lock(&chip->mutex);
	for (i = 0; i < 2; i++)
		wm8776_write_bits(ice, &chip->wm[i],
				  WM8776_REG_MASTER_MODE_CONTROL,
				  0x180, val);
	mutex_unlock(&chip->mutex);
}

/*
 * supported sample rates (to override the default one)
 */

static unsigned int rates[] = {
	32000, 44100, 48000, 64000, 88200, 96000, 176400, 192000
};

/* playback rates: 32..192 kHz */
static struct snd_pcm_hw_constraint_list dac_rates = {
	.count = ARRAY_SIZE(rates),
	.list = rates,
	.mask = 0
};


/*
 * chip addresses on I2C bus
 */
static unsigned char wm8776_addr[2] __devinitdata = {
	0x34, 0x36, /* codec 0 & 1 */
};

/*
 * initialize the chip
 */
static int __devinit maya44_init(struct snd_ice1712 *ice)
{
	int i;
	struct snd_maya44 *chip;

	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
	if (!chip)
		return -ENOMEM;
	mutex_init(&chip->mutex);
	chip->ice = ice;
	ice->spec = chip;

	/* initialise codecs */
	ice->num_total_dacs = 4;
	ice->num_total_adcs = 4;
	ice->akm_codecs = 0;

	for (i = 0; i < 2; i++) {
		wm8776_init(ice, &chip->wm[i], wm8776_addr[i]);
		wm8776_select_input(chip, i, MAYA_LINE_IN);
	}

	/* set card specific rates */
	ice->hw_rates = &dac_rates;

	/* register change rate notifier */
	ice->gpio.set_pro_rate = set_rate;

	/* RDMA1 (2nd input channel) is used for ADC by default */
	ice->force_rdma1 = 1;

	/* have an own routing control */
	ice->own_routing = 1;

	return 0;
}


/*
 * Maya44 boards don't provide the EEPROM data except for the vendor IDs.
 * hence the driver needs to sets up it properly.
 */

static unsigned char maya44_eeprom[] __devinitdata = {
	[ICE_EEP2_SYSCONF]     = 0x45,
		/* clock xin1=49.152MHz, mpu401, 2 stereo ADCs+DACs */
	[ICE_EEP2_ACLINK]      = 0x80,
		/* I2S */
	[ICE_EEP2_I2S]         = 0xf8,
		/* vol, 96k, 24bit, 192k */
	[ICE_EEP2_SPDIF]       = 0xc3,
		/* enable spdif out, spdif out supp, spdif-in, ext spdif out */
	[ICE_EEP2_GPIO_DIR]    = 0xff,
	[ICE_EEP2_GPIO_DIR1]   = 0xff,
	[ICE_EEP2_GPIO_DIR2]   = 0xff,
	[ICE_EEP2_GPIO_MASK]   = 0/*0x9f*/,
	[ICE_EEP2_GPIO_MASK1]  = 0/*0xff*/,
	[ICE_EEP2_GPIO_MASK2]  = 0/*0x7f*/,
	[ICE_EEP2_GPIO_STATE]  = (1 << GPIO_PHANTOM_OFF) |
			(1 << GPIO_SPDIF_IN_INV),
	[ICE_EEP2_GPIO_STATE1] = 0x00,
	[ICE_EEP2_GPIO_STATE2] = 0x00,
};

/* entry point */
struct snd_ice1712_card_info snd_vt1724_maya44_cards[] __devinitdata = {
	{
		.subvendor = VT1724_SUBDEVICE_MAYA44,
		.name = "ESI Maya44",
		.model = "maya44",
		.chip_init = maya44_init,
		.build_controls = maya44_add_controls,
		.eeprom_size = sizeof(maya44_eeprom),
		.eeprom_data = maya44_eeprom,
	},
	{ } /* terminator */
};