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// SPDX-License-Identifier: MIT
/*
* Copyright (C) 2019 NVIDIA Corporation
*/
#include <linux/bug.h>
#include <sound/hda_verbs.h>
#include "hda.h"
void tegra_hda_parse_format(unsigned int format, struct tegra_hda_format *fmt)
{
unsigned int mul, div, bits, channels;
if (format & AC_FMT_TYPE_NON_PCM)
fmt->pcm = false;
else
fmt->pcm = true;
if (format & AC_FMT_BASE_44K)
fmt->sample_rate = 44100;
else
fmt->sample_rate = 48000;
mul = (format & AC_FMT_MULT_MASK) >> AC_FMT_MULT_SHIFT;
div = (format & AC_FMT_DIV_MASK) >> AC_FMT_DIV_SHIFT;
fmt->sample_rate *= (mul + 1) / (div + 1);
switch (format & AC_FMT_BITS_MASK) {
case AC_FMT_BITS_8:
fmt->bits = 8;
break;
case AC_FMT_BITS_16:
fmt->bits = 16;
break;
case AC_FMT_BITS_20:
fmt->bits = 20;
break;
case AC_FMT_BITS_24:
fmt->bits = 24;
break;
case AC_FMT_BITS_32:
fmt->bits = 32;
break;
default:
bits = (format & AC_FMT_BITS_MASK) >> AC_FMT_BITS_SHIFT;
WARN(1, "invalid number of bits: %#x\n", bits);
fmt->bits = 8;
break;
}
channels = (format & AC_FMT_CHAN_MASK) >> AC_FMT_CHAN_SHIFT;
/* channels are encoded as n - 1 */
fmt->channels = channels + 1;
}
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