Some codec drivers when running in slave mode require that FS is explicitly set by the machine driver as it may not be exactly BCLK/rate.
Extend the DAI API by adding :-
int snd_soc_dai_set_fs(struct snd_soc_dai *dai, unsigned int fs);
Signed-off-by: Liam Girdwood liam.r.girdwood@linux.intel.com --- include/sound/soc-dai.h | 3 +++ sound/soc/soc-core.c | 16 ++++++++++++++++ 2 files changed, 19 insertions(+)
diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h index ae9a227..06d2ce5 100644 --- a/include/sound/soc-dai.h +++ b/include/sound/soc-dai.h @@ -105,6 +105,8 @@ int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source, unsigned int freq_in, unsigned int freq_out);
+int snd_soc_dai_set_dfs(struct snd_soc_dai *dai, unsigned int fs); + /* Digital Audio interface formatting */ int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt);
@@ -131,6 +133,7 @@ struct snd_soc_dai_ops { int (*set_pll)(struct snd_soc_dai *dai, int pll_id, int source, unsigned int freq_in, unsigned int freq_out); int (*set_clkdiv)(struct snd_soc_dai *dai, int div_id, int div); + int (*set_dfs)(struct snd_soc_dai *dai, unsigned int fs);
/* * DAI format configuration diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 09e341d..90b86cc 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -3380,6 +3380,22 @@ int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source, EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
/** + * snd_soc_dai_set_dfs - configure DAI FS. + * @dai: DAI + * @fs Ration of BCLK to Sample rate + * + * Configures the DAI for a preset FS. + */ +int snd_soc_dai_set_dfs(struct snd_soc_dai *dai, unsigned int fs) +{ + if (dai->driver && dai->driver->ops->set_dfs) + return dai->driver->ops->set_dfs(dai, fs); + else + return -EINVAL; +} +EXPORT_SYMBOL_GPL(snd_soc_dai_set_dfs); + +/** * snd_soc_dai_set_fmt - configure DAI hardware audio format. * @dai: DAI * @fmt: SND_SOC_DAIFMT_ format value.