ASoC: simple card: set cpu-dai sysclk with mclk-fs

Allows to request a specific mclk frequency per cpu_dai.
To support some codecs with mclk provided by the cpu_dai, the
mclk rate must be set depending on frame rate.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index d555493..3ff76d4 100644 (file)
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -76,6 +76,7 @@ static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream,
 {
        struct snd_soc_pcm_runtime *rtd = substream->private_data;
        struct snd_soc_dai *codec_dai = rtd->codec_dai;
+       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
        struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
        struct simple_dai_props *dai_props =
                &priv->dai_props[rtd - rtd->card->rtd];
@@ -91,8 +92,16 @@ static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream,
                mclk = params_rate(params) * mclk_fs;
                ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
                                             SND_SOC_CLOCK_IN);
+               if (ret && ret != -ENOTSUPP)
+                       goto err;
+
+               ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
+                                            SND_SOC_CLOCK_OUT);
+               if (ret && ret != -ENOTSUPP)
+                       goto err;
        }
 
+err:
        return ret;
 }