Unverified Commit b951b51e authored by Keyon Jie's avatar Keyon Jie Committed by Mark Brown
Browse files

ASoC: SOF: add a helper to get topology configured mclk 



Add helper sof_dai_ssp_mclk to get the topology configured MCLK from a
pcm_runtime, return 0 if it is not available, and error if the dai type
is not SSP at the moment.

Export the helper for external use, e.g. from machine drivers.

Signed-off-by: default avatarKeyon Jie <yang.jie@linux.intel.com>
Reviewed-by: default avatarGuennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: default avatarDaniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: default avatarKai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20210319124950.3853994-1-kai.vehmanen@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 2277e7e3

include/sound/sof.h

+1 −0
Original line number Diff line number Diff line
@@ -103,5 +103,6 @@ struct sof_dev_desc { 
int sof_nocodec_setup(struct device *dev, const struct snd_sof_dsp_ops *ops,

		      int (*pcm_dai_link_fixup)(struct snd_soc_pcm_runtime *rtd,

						struct snd_pcm_hw_params *params));

int sof_dai_get_mclk(struct snd_soc_pcm_runtime *rtd);



#endif

sound/soc/sof/sof-audio.c

+27 −0
Original line number Diff line number Diff line
@@ -433,6 +433,33 @@ struct snd_sof_dai *snd_sof_find_dai(struct snd_soc_component *scomp, 
	return NULL;

}



/*

 * Helper to get SSP MCLK from a pcm_runtime.

 * Return 0 if not exist.

 */

int sof_dai_get_mclk(struct snd_soc_pcm_runtime *rtd)

{

	struct snd_soc_component *component =

		snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);

	struct snd_sof_dai *dai =

		snd_sof_find_dai(component, (char *)rtd->dai_link->name);



	/* use the tplg configured mclk if existed */

	if (!dai || !dai->dai_config)

		return 0;



	switch (dai->dai_config->type) {

	case SOF_DAI_INTEL_SSP:

		return dai->dai_config->ssp.mclk_rate;

	default:

		/* not yet implemented for platforms other than the above */

		dev_err(rtd->dev, "mclk for dai_config->type %d not supported yet!\n",

			dai->dai_config->type);

		return -EINVAL;

	}

}

EXPORT_SYMBOL(sof_dai_get_mclk);



/*

 * SOF Driver enumeration.

 */