162306a36Sopenharmony_ci// SPDX-License-Identifier: MIT 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Copyright (C) 2019 NVIDIA Corporation 462306a36Sopenharmony_ci */ 562306a36Sopenharmony_ci 662306a36Sopenharmony_ci#include <linux/bug.h> 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#include <sound/hda_verbs.h> 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci#include "hda.h" 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_civoid tegra_hda_parse_format(unsigned int format, struct tegra_hda_format *fmt) 1362306a36Sopenharmony_ci{ 1462306a36Sopenharmony_ci unsigned int mul, div, bits, channels; 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_ci if (format & AC_FMT_TYPE_NON_PCM) 1762306a36Sopenharmony_ci fmt->pcm = false; 1862306a36Sopenharmony_ci else 1962306a36Sopenharmony_ci fmt->pcm = true; 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_ci if (format & AC_FMT_BASE_44K) 2262306a36Sopenharmony_ci fmt->sample_rate = 44100; 2362306a36Sopenharmony_ci else 2462306a36Sopenharmony_ci fmt->sample_rate = 48000; 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ci mul = (format & AC_FMT_MULT_MASK) >> AC_FMT_MULT_SHIFT; 2762306a36Sopenharmony_ci div = (format & AC_FMT_DIV_MASK) >> AC_FMT_DIV_SHIFT; 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci fmt->sample_rate *= (mul + 1) / (div + 1); 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ci switch (format & AC_FMT_BITS_MASK) { 3262306a36Sopenharmony_ci case AC_FMT_BITS_8: 3362306a36Sopenharmony_ci fmt->bits = 8; 3462306a36Sopenharmony_ci break; 3562306a36Sopenharmony_ci 3662306a36Sopenharmony_ci case AC_FMT_BITS_16: 3762306a36Sopenharmony_ci fmt->bits = 16; 3862306a36Sopenharmony_ci break; 3962306a36Sopenharmony_ci 4062306a36Sopenharmony_ci case AC_FMT_BITS_20: 4162306a36Sopenharmony_ci fmt->bits = 20; 4262306a36Sopenharmony_ci break; 4362306a36Sopenharmony_ci 4462306a36Sopenharmony_ci case AC_FMT_BITS_24: 4562306a36Sopenharmony_ci fmt->bits = 24; 4662306a36Sopenharmony_ci break; 4762306a36Sopenharmony_ci 4862306a36Sopenharmony_ci case AC_FMT_BITS_32: 4962306a36Sopenharmony_ci fmt->bits = 32; 5062306a36Sopenharmony_ci break; 5162306a36Sopenharmony_ci 5262306a36Sopenharmony_ci default: 5362306a36Sopenharmony_ci bits = (format & AC_FMT_BITS_MASK) >> AC_FMT_BITS_SHIFT; 5462306a36Sopenharmony_ci WARN(1, "invalid number of bits: %#x\n", bits); 5562306a36Sopenharmony_ci fmt->bits = 8; 5662306a36Sopenharmony_ci break; 5762306a36Sopenharmony_ci } 5862306a36Sopenharmony_ci 5962306a36Sopenharmony_ci channels = (format & AC_FMT_CHAN_MASK) >> AC_FMT_CHAN_SHIFT; 6062306a36Sopenharmony_ci 6162306a36Sopenharmony_ci /* channels are encoded as n - 1 */ 6262306a36Sopenharmony_ci fmt->channels = channels + 1; 6362306a36Sopenharmony_ci} 64