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ASoC: Intel: bytcr_rt5640: set SSP to I2S mode 2ch

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Using the hw_fixup function in order to overwrite the default SSP
setting for Audio DSP port connected to the codec. Instead of
TDM 4ch use I2S 2ch 24 bits.

Signed-off-by: Sebastien Guiriec <sebastien.guiriec@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sebastien Guiriec 2015-12-17 20:35:39 -06:00 committed by Mark Brown
parent d2c7db854e
commit 3f27dedda4
1 changed files with 23 additions and 0 deletions
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23
sound/soc/intel/boards/bytcr_rt5640.c
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@ -107,6 +107,7 @@ static int byt_codec_fixup(struct snd_soc_pcm_runtime *rtd,
SNDRV_PCM_HW_PARAM_RATE);
struct snd_interval *channels = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_CHANNELS);
int ret;
/* The DSP will covert the FE rate to 48k, stereo, 24bits */
rate->min = rate->max = 48000;
@ -114,6 +115,28 @@ static int byt_codec_fixup(struct snd_soc_pcm_runtime *rtd,
/* set SSP2 to 24-bit */
params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
/*
* Default mode for SSP configuration is TDM 4 slot, override config
* with explicit setting to I2S 2ch 24-bit. The word length is set with
* dai_set_tdm_slot() since there is no other API exposed
*/
ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_IF |
SND_SOC_DAIFMT_CBS_CFS
);
if (ret < 0) {
dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 24);
if (ret < 0) {
dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
return ret;
}
return 0;
}