[alsa-devel] [PATCH v2 6/7] ASoC: soc-dapm: add snd_soc_dapm_stream_stop()

[Kuninori Morimoto]

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

When we stop stream, if it was Playback, we might need to care
about power down time. In such case, we need to use delayed work.

We have same implementation for it at soc-pcm.c and soc-compress.c,
but we don't want to have duplicate code.
This patch adds snd_soc_dapm_stream_stop(), and share same code.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
---
v2 -> v3

	- rename function
		- snd_soc_stream_stop()
		+ snd_soc_dapm_stream_stop()
	- implement it at soc-dapm.c

 include/sound/soc-dapm.h |  1 +
 sound/soc/soc-compress.c | 18 +-----------------
 sound/soc/soc-dapm.c     | 23 +++++++++++++++++++++++
 sound/soc/soc-pcm.c      | 19 +------------------
 4 files changed, 26 insertions(+), 35 deletions(-)

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 6e8a312..1b6afbc 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -434,6 +434,7 @@ void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm);
 /* dapm events */
 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
 	int event);
+void snd_soc_dapm_stream_stop(struct snd_soc_pcm_runtime *rtd, int stream);
 void snd_soc_dapm_shutdown(struct snd_soc_card *card);
 
 /* external DAPM widget events */
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
index 7bd574f..f37fc61 100644
--- a/sound/soc/soc-compress.c
+++ b/sound/soc/soc-compress.c
@@ -240,23 +240,7 @@ static int soc_compr_free(struct snd_compr_stream *cstream)
 	if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
 		cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
 
-	if (cstream->direction == SND_COMPRESS_PLAYBACK) {
-		if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
-			snd_soc_dapm_stream_event(rtd,
-						  SNDRV_PCM_STREAM_PLAYBACK,
-						  SND_SOC_DAPM_STREAM_STOP);
-		} else {
-			rtd->pop_wait = 1;
-			queue_delayed_work(system_power_efficient_wq,
-					   &rtd->delayed_work,
-					   msecs_to_jiffies(rtd->pmdown_time));
-		}
-	} else {
-		/* capture streams can be powered down now */
-		snd_soc_dapm_stream_event(rtd,
-					  SNDRV_PCM_STREAM_CAPTURE,
-					  SND_SOC_DAPM_STREAM_STOP);
-	}
+	snd_soc_dapm_stream_stop(rtd, stream);
 
 	mutex_unlock(&rtd->card->pcm_mutex);
 	return 0;
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index b6378f0..442846f 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -4447,6 +4447,29 @@ void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
 	mutex_unlock(&card->dapm_mutex);
 }
 
+void snd_soc_dapm_stream_stop(struct snd_soc_pcm_runtime *rtd, int stream)
+{
+	if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
+			/* powered down playback stream now */
+			snd_soc_dapm_stream_event(rtd,
+						  SNDRV_PCM_STREAM_PLAYBACK,
+						  SND_SOC_DAPM_STREAM_STOP);
+		} else {
+			/* start delayed pop wq here for playback streams */
+			rtd->pop_wait = 1;
+			queue_delayed_work(system_power_efficient_wq,
+					   &rtd->delayed_work,
+					   msecs_to_jiffies(rtd->pmdown_time));
+		}
+	} else {
+		/* capture streams can be powered down now */
+		snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
+					  SND_SOC_DAPM_STREAM_STOP);
+	}
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_stop);
+
 /**
  * snd_soc_dapm_enable_pin_unlocked - enable pin.
  * @dapm: DAPM context
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index ad908e0..dfff2dd 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -672,24 +672,7 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
 
 	soc_pcm_components_close(substream, NULL);
 
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
-			/* powered down playback stream now */
-			snd_soc_dapm_stream_event(rtd,
-						  SNDRV_PCM_STREAM_PLAYBACK,
-						  SND_SOC_DAPM_STREAM_STOP);
-		} else {
-			/* start delayed pop wq here for playback streams */
-			rtd->pop_wait = 1;
-			queue_delayed_work(system_power_efficient_wq,
-					   &rtd->delayed_work,
-					   msecs_to_jiffies(rtd->pmdown_time));
-		}
-	} else {
-		/* capture streams can be powered down now */
-		snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
-					  SND_SOC_DAPM_STREAM_STOP);
-	}
+	snd_soc_dapm_stream_stop(rtd, substream->stream);
 
 	mutex_unlock(&rtd->card->pcm_mutex);
 
-- 
2.7.4