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ASoC: jz4740-i2s: Support S20_LE and S24_LE sample formats

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The audio controller on JZ47xx SoCs can transfer 20- and 24-bit
samples in the FIFO, so allow those formats to be used with the
I2S driver. Although the FIFO doesn't care about the in-memory
sample format, we only support 4-byte format variants because the
DMA controller on these SoCs cannot transfer in 3-byte multiples.

Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
Link: https://lore.kernel.org/r/20221023143328.160866-7-aidanmacdonald.0x0@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Aidan MacDonald 2022-10-23 15:33:25 +01:00 committed by Mark Brown
parent dacc06b812
commit 7abd01cfc5
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 10 additions and 2 deletions
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12
sound/soc/jz4740/jz4740-i2s.c
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@ -237,9 +237,15 @@ static int jz4740_i2s_hw_params(struct snd_pcm_substream *substream,
case SNDRV_PCM_FORMAT_S8:
sample_size = 0;
break;
case SNDRV_PCM_FORMAT_S16:
case SNDRV_PCM_FORMAT_S16_LE:
sample_size = 1;
break;
case SNDRV_PCM_FORMAT_S20_LE:
sample_size = 3;
break;
case SNDRV_PCM_FORMAT_S24_LE:
sample_size = 4;
break;
default:
return -EINVAL;
}
@ -374,7 +380,9 @@ static const struct snd_soc_dai_ops jz4740_i2s_dai_ops = {
};
#define JZ4740_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \
SNDRV_PCM_FMTBIT_S16_LE)
SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S20_LE | \
SNDRV_PCM_FMTBIT_S24_LE)
static struct snd_soc_dai_driver jz4740_i2s_dai = {
.probe = jz4740_i2s_dai_probe,