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Commit 3f27dedd authored by Sebastien Guiriec's avatar Sebastien Guiriec Committed by Mark Brown
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ASoC: Intel: bytcr_rt5640: set SSP to I2S mode 2ch 



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: default avatarSebastien Guiriec <sebastien.guiriec@intel.com>
Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent d2c7db85

sound/soc/intel/boards/bytcr_rt5640.c

+23 −0
Original line number Diff line number Diff line
@@ -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;

}