[PATCH v2 12/29] ASoC: soc-component: add snd_soc_component_trigger()

[Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>]

From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>

Current ALSA SoC is directly using component->driver->ops->xxx,
thus, it is deep nested, and makes code difficult to read,
and is not good for encapsulation.
This patch adds new snd_soc_component_trigger() and use it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
v1 -> v2

	- no change

 include/sound/soc-component.h |  3 +++
 sound/soc/soc-component.c     | 11 +++++++++++
 sound/soc/soc-pcm.c           |  6 +-----
 3 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/include/sound/soc-component.h b/include/sound/soc-component.h
index fbcd911..302e27a 100644
--- a/include/sound/soc-component.h
+++ b/include/sound/soc-component.h
@@ -350,5 +350,8 @@ int snd_soc_component_hw_params(struct snd_soc_component *component,
 				struct snd_pcm_hw_params *params);
 int snd_soc_component_hw_free(struct snd_soc_component *component,
 			      struct snd_pcm_substream *substream);
+int snd_soc_component_trigger(struct snd_soc_component *component,
+			      struct snd_pcm_substream *substream,
+			      int cmd);
 
 #endif /* __SOC_COMPONENT_H */
diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
index e2bc34e..cf0d20a 100644
--- a/sound/soc/soc-component.c
+++ b/sound/soc/soc-component.c
@@ -336,3 +336,14 @@ int snd_soc_component_hw_free(struct snd_soc_component *component,
 
 	return 0;
 }
+
+int snd_soc_component_trigger(struct snd_soc_component *component,
+			      struct snd_pcm_substream *substream,
+			      int cmd)
+{
+	if (component->driver->ops &&
+	    component->driver->ops->trigger)
+		return component->driver->ops->trigger(substream, cmd);
+
+	return 0;
+}
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 24dc570..58f3bc5 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -1055,11 +1055,7 @@ static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 	for_each_rtdcom(rtd, rtdcom) {
 		component = rtdcom->component;
 
-		if (!component->driver->ops ||
-		    !component->driver->ops->trigger)
-			continue;
-
-		ret = component->driver->ops->trigger(substream, cmd);
+		ret = snd_soc_component_trigger(component, substream, cmd);
 		if (ret < 0)
 			return ret;
 	}
-- 
2.7.4

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