From 96a47908d8769479f5217bf3f432ccdc06a29747 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Fri, 26 Jul 2019 13:51:51 +0900
Subject: [PATCH] ASoC: soc-component: add snd_soc_pcm_component_ioctrl()
Git-commit: 96a47908d8769479f5217bf3f432ccdc06a29747
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_ioctrl() and use it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87r26d4d0f.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     | 20 ++++++++++++++++++++
 sound/soc/soc-pcm.c           | 25 ++-----------------------
 3 files changed, 24 insertions(+), 23 deletions(-)

diff --git a/include/sound/soc-component.h b/include/sound/soc-component.h
index 38b4be1d99f5..5db4e5d028d0 100644
--- a/include/sound/soc-component.h
+++ b/include/sound/soc-component.h
@@ -372,5 +372,7 @@ int snd_soc_component_of_xlate_dai_name(struct snd_soc_component *component,
 					const char **dai_name);
 
 int snd_soc_pcm_component_pointer(struct snd_pcm_substream *substream);
+int snd_soc_pcm_component_ioctl(struct snd_pcm_substream *substream,
+				unsigned int cmd, void *arg);
 
 #endif /* __SOC_COMPONENT_H */
diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
index e2053c8bf1f0..a6c0857a9e90 100644
--- a/sound/soc/soc-component.c
+++ b/sound/soc/soc-component.c
@@ -442,3 +442,23 @@ int snd_soc_pcm_component_pointer(struct snd_pcm_substream *substream)
 
 	return 0;
 }
+
+int snd_soc_pcm_component_ioctl(struct snd_pcm_substream *substream,
+				unsigned int cmd, void *arg)
+{
+	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 ioctl */
+		if (component->driver->ops &&
+		    component->driver->ops->ioctl)
+			return component->driver->ops->ioctl(substream,
+							     cmd, arg);
+	}
+
+	return snd_pcm_lib_ioctl(substream, cmd, arg);
+}
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 020e1d275076..12377b8d41c2 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2453,27 +2453,6 @@ static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream)
 	return ret;
 }
 
-static int soc_pcm_ioctl(struct snd_pcm_substream *substream,
-		     unsigned int cmd, void *arg)
-{
-	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;
-
-		if (!component->driver->ops ||
-		    !component->driver->ops->ioctl)
-			continue;
-
-		/* FIXME: use 1st ioctl */
-		return component->driver->ops->ioctl(substream, cmd, arg);
-	}
-
-	return snd_pcm_lib_ioctl(substream, cmd, arg);
-}
-
 static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
 {
 	struct snd_pcm_substream *substream =
@@ -3013,7 +2992,7 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
 		rtd->ops.hw_free	= dpcm_fe_dai_hw_free;
 		rtd->ops.close		= dpcm_fe_dai_close;
 		rtd->ops.pointer	= soc_pcm_pointer;
-		rtd->ops.ioctl		= soc_pcm_ioctl;
+		rtd->ops.ioctl		= snd_soc_pcm_component_ioctl;
 	} else {
 		rtd->ops.open		= soc_pcm_open;
 		rtd->ops.hw_params	= soc_pcm_hw_params;
@@ -3022,7 +3001,7 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
 		rtd->ops.hw_free	= soc_pcm_hw_free;
 		rtd->ops.close		= soc_pcm_close;
 		rtd->ops.pointer	= soc_pcm_pointer;
-		rtd->ops.ioctl		= soc_pcm_ioctl;
+		rtd->ops.ioctl		= snd_soc_pcm_component_ioctl;
 	}
 
 	for_each_rtdcom(rtd, rtdcom) {
-- 
2.16.4