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ASoC: bcm2835: add 24bit support 

This adds 24 bit support to the I2S driver of the BCM2835

Code ported from bcm2708-i2s driver in Raspberry Pi tree.

Signed-off-by: Florian Meier <florian.meier@koalo.de>
Signed-off-by: Matthias Reichl <hias@horus.com>
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Matthias Reichl 2016-04-25 13:39:38 +00:00 committed by Mark Brown
parent f55532a0c0
commit a34b027dca
1 changed files with 6 additions and 1 deletions
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7
sound/soc/bcm/bcm2835-i2s.c
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@ -259,6 +259,9 @@ static int bcm2835_i2s_hw_params(struct snd_pcm_substream *substream,
case SNDRV_PCM_FORMAT_S16_LE:
data_length = 16;
break;
case SNDRV_PCM_FORMAT_S24_LE:
data_length = 24;
break;
case SNDRV_PCM_FORMAT_S32_LE:
data_length = 32;
break;
@ -279,7 +282,7 @@ static int bcm2835_i2s_hw_params(struct snd_pcm_substream *substream,
/* Setup the frame format */
format = BCM2835_I2S_CHEN;
if (data_length > 24)
if (data_length >= 24)
format |= BCM2835_I2S_CHWEX;
format |= BCM2835_I2S_CHWID((data_length-8)&0xf);
@ -570,6 +573,7 @@ static struct snd_soc_dai_driver bcm2835_i2s_dai = {
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S32_LE
},
.capture = {
@ -577,6 +581,7 @@ static struct snd_soc_dai_driver bcm2835_i2s_dai = {
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S32_LE
},
.ops = &bcm2835_i2s_dai_ops,