Add mclk-fs support to audio graph card
as it was previously implemented in simple card.
Signed-off-by: Olivier Moysan <olivier.moysan@xxxxxx>
---
sound/soc/generic/audio-graph-card.c | 47 ++++++++++++++++++++++++++++++------
1 file changed, 39 insertions(+), 8 deletions(-)
diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c
index 488c52f..1b61642 100644
--- a/sound/soc/generic/audio-graph-card.c
+++ b/sound/soc/generic/audio-graph-card.c
@@ -29,7 +29,9 @@ struct graph_card_data {
struct graph_dai_props {
struct asoc_simple_dai cpu_dai;
struct asoc_simple_dai codec_dai;
+ unsigned int mclk_fs;
} *dai_props;
+ unsigned int mclk_fs;
struct snd_soc_dai_link *dai_link;
struct gpio_desc *pa_gpio;
};
@@ -95,9 +97,43 @@ static void asoc_graph_card_shutdown(struct snd_pcm_substream *substream)
asoc_simple_card_clk_disable(&dai_props->codec_dai);
}
+static int asoc_graph_card_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ 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 graph_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
+ struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num);
+ unsigned int mclk, mclk_fs = 0;
+ int ret = 0;
+
+ if (priv->mclk_fs)
+ mclk_fs = priv->mclk_fs;
+ else if (dai_props->mclk_fs)
+ mclk_fs = dai_props->mclk_fs;
+
+ if (mclk_fs) {
+ 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;
+ }
+ return 0;
+err:
+ return ret;
+}
+
static const struct snd_soc_ops asoc_graph_card_ops = {
.startup = asoc_graph_card_startup,
.shutdown = asoc_graph_card_shutdown,
+ .hw_params = asoc_graph_card_hw_params,
};
static int asoc_graph_card_dai_init(struct snd_soc_pcm_runtime *rtd)
@@ -146,10 +182,7 @@ static int asoc_graph_card_dai_link_of(struct device_node *cpu_port,
if (ret < 0)
goto dai_link_of_err;
- /*
- * we need to consider "mclk-fs" around here
- * see simple-card
- */
+ of_property_read_u32(rcpu_ep, "mclk-fs", &dai_props->mclk_fs);
ret = asoc_simple_card_parse_graph_cpu(cpu_ep, dai_link);
if (ret < 0)
@@ -217,10 +250,8 @@ static int asoc_graph_card_parse_of(struct graph_card_data *priv)
if (ret < 0)
return ret;
- /*
- * we need to consider "mclk-fs" around here
- * see simple-card
- */
+ /* Factor to mclk, used in hw_params() */
+ of_property_read_u32(node, "mclk-fs", &priv->mclk_fs);
of_for_each_phandle(&it, rc, node, "dais", NULL, 0) {
ret = asoc_graph_card_dai_link_of(it.node, priv, idx++);
--
1.9.1
--
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