linux-kernel - [PATCH 1/6] ASoC: codec2codec: run callbacks in order

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Date:   Wed, 24 Jul 2019 18:24:00 +0200
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Kevin Hilman <khilman@...libre.com>
Cc:     Jerome Brunet <jbrunet@...libre.com>, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-amlogic@...ts.infradead.org
Subject: [PATCH 1/6] ASoC: codec2codec: run callbacks in order

When handling dai_link events on codec to codec links, run all .startup()
callbacks on sinks and sources before running any .hw_params(). Same goes
for hw_free() and shutdown(). This is closer to the behavior of regular
dai links

Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
---
 sound/soc/soc-dapm.c | 38 ++++++++++++++++++++++++++++----------
 1 file changed, 28 insertions(+), 10 deletions(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 1d04612601ad..5348abda7ce2 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -3835,11 +3835,6 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
 				goto out;
 			}
 			source->active++;
-			ret = snd_soc_dai_hw_params(source, &substream, params);
-			if (ret < 0)
-				goto out;
-
-			dapm_update_dai_unlocked(&substream, params, source);
 		}
 
 		substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
@@ -3853,7 +3848,24 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
 				goto out;
 			}
 			sink->active++;
-			ret = snd_soc_dai_hw_params(sink, &substream, params);
+		}
+
+		substream.stream = SNDRV_PCM_STREAM_CAPTURE;
+		snd_soc_dapm_widget_for_each_source_path(w, path) {
+			source = path->source->priv;
+
+			ret = soc_dai_hw_params(&substream, params, source);
+			if (ret < 0)
+				goto out;
+
+			dapm_update_dai_unlocked(&substream, params, source);
+		}
+
+		substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
+		snd_soc_dapm_widget_for_each_sink_path(w, path) {
+			sink = path->sink->priv;
+
+			ret = soc_dai_hw_params(&substream, params, sink);
 			if (ret < 0)
 				goto out;
 
@@ -3889,9 +3901,18 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
 		substream.stream = SNDRV_PCM_STREAM_CAPTURE;
 		snd_soc_dapm_widget_for_each_source_path(w, path) {
 			source = path->source->priv;
-
 			snd_soc_dai_hw_free(source, &substream);
+		}
 
+		substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
+		snd_soc_dapm_widget_for_each_sink_path(w, path) {
+			sink = path->sink->priv;
+			snd_soc_dai_hw_free(sink, &substream);
+		}
+
+		substream.stream = SNDRV_PCM_STREAM_CAPTURE;
+		snd_soc_dapm_widget_for_each_source_path(w, path) {
+			source = path->source->priv;
 			source->active--;
 			snd_soc_dai_shutdown(source, &substream);
 		}
@@ -3899,9 +3920,6 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
 		substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
 		snd_soc_dapm_widget_for_each_sink_path(w, path) {
 			sink = path->sink->priv;
-
-			snd_soc_dai_hw_free(sink, &substream);
-
 			sink->active--;
 			snd_soc_dai_shutdown(sink, &substream);
 		}
-- 
2.21.0