[02/44] ASoC: soc-core: add new pcm_construct/pcm_destruct

Commit Message

Kuninori Morimoto Oct. 2, 2019, 5:30 a.m. UTC

From: Kuninori Morimoto <[e-mail]>

Current snd_soc_component_driver has pcm_new/pcm_free, but,
it doesn't have "component" at parameter.
Thus, each callback can't know it is called for which component.
Each callback currently is getting "component" by using
snd_soc_rtdcom_lookup() with driver name.

It works today, but, will not work in the future if we support multi
CPU/Codec/Platform, because 1 rtd might have multiple same driver
name component.

To solve this issue, each callback need to be called with component.
This patch adds new pcm_construct/pcm_destruct with "component"
parameter.

Signed-off-by: Kuninori Morimoto <[e-mail]>
---
 include/sound/soc-component.h |  6 ++++++
 sound/soc/soc-component.c     | 11 +++++++++++
 2 files changed, 17 insertions(+)

Patch

diff --git a/include/sound/soc-component.h b/include/sound/soc-component.h
index a6a3b69..aa2e2cbc 100644
--- a/include/sound/soc-component.h
+++ b/include/sound/soc-component.h
@@ -46,10 +46,16 @@  struct snd_soc_component_driver {
 	int (*write)(struct snd_soc_component *component,
 		     unsigned int reg, unsigned int val);
 
+	/* remove me */
 	/* pcm creation and destruction */
 	int (*pcm_new)(struct snd_soc_pcm_runtime *rtd);
 	void (*pcm_free)(struct snd_pcm *pcm);
 
+	int (*pcm_construct)(struct snd_soc_component *component,
+			     struct snd_soc_pcm_runtime *rtd);
+	void (*pcm_destruct)(struct snd_soc_component *component,
+			     struct snd_pcm *pcm);
+
 	/* component wide operations */
 	int (*set_sysclk)(struct snd_soc_component *component,
 			  int clk_id, int source, unsigned int freq, int dir);
diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
index 2d9cb76..d2b052a 100644
--- a/sound/soc/soc-component.c
+++ b/sound/soc/soc-component.c
@@ -588,6 +588,13 @@  int snd_soc_pcm_component_new(struct snd_pcm *pcm)
 	for_each_rtdcom(rtd, rtdcom) {
 		component = rtdcom->component;
 
+		if (component->driver->pcm_construct) {
+			ret = component->driver->pcm_construct(component, rtd);
+			if (ret < 0)
+				return ret;
+		}
+
+		/* remove me */
 		if (component->driver->pcm_new) {
 			ret = component->driver->pcm_new(rtd);
 			if (ret < 0)
@@ -607,6 +614,10 @@  void snd_soc_pcm_component_free(struct snd_pcm *pcm)
 	for_each_rtdcom(rtd, rtdcom) {
 		component = rtdcom->component;
 
+		if (component->driver->pcm_destruct)
+			component->driver->pcm_destruct(component, pcm);
+
+		/* remove me */
 		if (component->driver->pcm_free)
 			component->driver->pcm_free(pcm);
 	}