[alsa-devel] [PATCH 03/25] ASoC: soc-component: add snd_soc_component_open()

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>

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_open() and use it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
---
 include/sound/soc-component.h |  4 ++++
 sound/soc/soc-component.c     | 10 ++++++++++
 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 57270c2..306c9cf 100644
--- a/include/sound/soc-component.h
+++ b/include/sound/soc-component.h
@@ -322,4 +322,8 @@ int snd_soc_component_force_enable_pin_unlocked(
 	struct snd_soc_component *component,
 	const char *pin);
 
+/* component driver ops */
+int snd_soc_component_open(struct snd_soc_component *component,
+			   struct snd_pcm_substream *substream);
+
 #endif /* __SOC_COMPONENT_H */
diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
index cf6dfb9..3e9172e 100644
--- a/sound/soc/soc-component.c
+++ b/sound/soc/soc-component.c
@@ -285,3 +285,13 @@ void snd_soc_component_module_put(struct snd_soc_component *component,
 	if (component->driver->module_get_upon_open == !!has_flags)
 		module_put(component->dev->driver->owner);
 }
+
+int snd_soc_component_open(struct snd_soc_component *component,
+			   struct snd_pcm_substream *substream)
+{
+	if (component->driver->ops &&
+	    component->driver->ops->open)
+		return component->driver->ops->open(substream);
+
+	return 0;
+}
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 5a59319..c98b4da 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -447,11 +447,7 @@ static int soc_pcm_components_open(struct snd_pcm_substream *substream,
 			return ret;
 		}
 
-		if (!component->driver->ops ||
-		    !component->driver->ops->open)
-			continue;
-
-		ret = component->driver->ops->open(substream);
+		ret = snd_soc_component_open(component, substream);
 		if (ret < 0) {
 			dev_err(component->dev,
 				"ASoC: can't open component %s: %d\n",
-- 
2.7.4