diff options
| author | Keyon Jie <yang.jie@linux.intel.com> | 2021-03-19 14:49:49 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-03-22 12:32:22 +0000 |
| commit | b951b51e2ca4d37dc9781e14d8a49d2f2b7e715b (patch) | |
| tree | 092c61a18c10876fea3bb93f49994ce24b6d453e /sound/soc/sof | |
| parent | 2277e7e36b4b8c27eb8d2fb33a20440bc800c2d7 (diff) | |
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: Keyon Jie <yang.jie@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20210319124950.3853994-1-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof')
| -rw-r--r-- | sound/soc/sof/sof-audio.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/sound/soc/sof/sof-audio.c b/sound/soc/sof/sof-audio.c index 3277489fee5e..928d7a46d820 100644 --- a/sound/soc/sof/sof-audio.c +++ b/sound/soc/sof/sof-audio.c @@ -434,6 +434,33 @@ struct snd_sof_dai *snd_sof_find_dai(struct snd_soc_component *scomp, } /* + * 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. */ int sof_machine_check(struct snd_sof_dev *sdev) |