// 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;
}