From 0035e2565b93e0902a06320ba1716bc1ddd753b3 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Fri, 26 Jul 2019 13:51:47 +0900
Subject: [PATCH] ASoC: soc-component: add snd_soc_pcm_component_pointer()
Git-commit: 0035e2565b93e0902a06320ba1716bc1ddd753b3
Patch-mainline: v5.4-rc1
References: jsc#SLE-16518

Current ALSA SoC is directly using component->driver->ops->xxx,
thus, the code nested deeply, and it makes code difficult to read,
and is not good for encapsulation.

We want to implement component related function at soc-component.c,
but, some of them need to care whole snd_soc_pcm_runtime (= rtd)
connected component.

Let's call component related function which need to care with
for_each_rtdcom() loop as snd_soc_pcm_component_xxx().
This patch adds new snd_soc_pcm_component_pointer() and use it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87sgqt4d0j.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 include/sound/soc-component.h |  2 ++
 sound/soc/soc-component.c     | 18 ++++++++++++++++++
 sound/soc/soc-pcm.c           | 13 +------------
 3 files changed, 21 insertions(+), 12 deletions(-)

diff --git a/include/sound/soc-component.h b/include/sound/soc-component.h
index 2aaf12bbbed0..38b4be1d99f5 100644
--- a/include/sound/soc-component.h
+++ b/include/sound/soc-component.h
@@ -371,4 +371,6 @@ int snd_soc_component_of_xlate_dai_name(struct snd_soc_component *component,
 					struct of_phandle_args *args,
 					const char **dai_name);
 
+int snd_soc_pcm_component_pointer(struct snd_pcm_substream *substream);
+
 #endif /* __SOC_COMPONENT_H */
diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
index cb63df6e46eb..e2053c8bf1f0 100644
--- a/sound/soc/soc-component.c
+++ b/sound/soc/soc-component.c
@@ -424,3 +424,21 @@ int snd_soc_component_of_xlate_dai_name(struct snd_soc_component *component,
 						     args, dai_name);
 	return -ENOTSUPP;
 }
+
+int snd_soc_pcm_component_pointer(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_component *component;
+	struct snd_soc_rtdcom_list *rtdcom;
+
+	for_each_rtdcom(rtd, rtdcom) {
+		component = rtdcom->component;
+
+		/* FIXME: use 1st pointer */
+		if (component->driver->ops &&
+		    component->driver->ops->pointer)
+			return component->driver->ops->pointer(substream);
+	}
+
+	return 0;
+}
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index cd49c2d688c3..020e1d275076 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -1111,8 +1111,6 @@ static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream,
 static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct snd_soc_component *component;
-	struct snd_soc_rtdcom_list *rtdcom;
 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 	struct snd_soc_dai *codec_dai;
 	struct snd_pcm_runtime *runtime = substream->runtime;
@@ -1124,17 +1122,8 @@ static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
 	/* clearing the previous total delay */
 	runtime->delay = 0;
 
-	for_each_rtdcom(rtd, rtdcom) {
-		component = rtdcom->component;
+	offset = snd_soc_pcm_component_pointer(substream);
 
-		if (!component->driver->ops ||
-		    !component->driver->ops->pointer)
-			continue;
-
-		/* FIXME: use 1st pointer */
-		offset = component->driver->ops->pointer(substream);
-		break;
-	}
 	/* base delay if assigned in pointer callback */
 	delay = runtime->delay;
 
-- 
2.16.4