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Diffstat (limited to 'sound/soc/generic/simple-card.c')
-rw-r--r--sound/soc/generic/simple-card.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index 7fe3009b1c43..f7c6734bd5da 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -39,6 +39,37 @@ struct simple_card_data {
#define simple_priv_to_link(priv, i) ((priv)->snd_card.dai_link + i)
#define simple_priv_to_props(priv, i) ((priv)->dai_props + i)
+static int asoc_simple_card_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ 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];
+ int ret;
+
+ ret = clk_prepare_enable(dai_props->cpu_dai.clk);
+ if (ret)
+ return ret;
+
+ ret = clk_prepare_enable(dai_props->codec_dai.clk);
+ if (ret)
+ clk_disable_unprepare(dai_props->cpu_dai.clk);
+
+ return ret;
+}
+
+static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ 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];
+
+ clk_disable_unprepare(dai_props->cpu_dai.clk);
+
+ clk_disable_unprepare(dai_props->codec_dai.clk);
+}
+
static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
@@ -58,6 +89,8 @@ static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream,
}
static struct snd_soc_ops asoc_simple_card_ops = {
+ .startup = asoc_simple_card_startup,
+ .shutdown = asoc_simple_card_shutdown,
.hw_params = asoc_simple_card_hw_params,
};
@@ -219,6 +252,7 @@ asoc_simple_card_sub_parse_of(struct device_node *np,
}
dai->sysclk = clk_get_rate(clk);
+ dai->clk = clk;
} else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
dai->sysclk = val;
} else {