From: Jarkko Nikula <jarkko.nikula@xxxxxxxxxx>
Machine specific trigger callback allows to do final stream start/stop
related operations in a machine driver after setting up the codec, DMA and
DAI.
One example could be clock management for linked streams case where machine
driver can start/stop synchronously the linked streams.
Signed-off-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxx>
Signed-off-by: Stefan Roese <sr@xxxxxxx>
---
sound/soc/soc-pcm.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 2cedf09..a3a7021 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -819,6 +819,13 @@ static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
if (ret < 0)
return ret;
}
+
+ if (rtd->dai_link->ops && rtd->dai_link->ops->trigger) {
+ ret = rtd->dai_link->ops->trigger(substream, cmd);
+ if (ret < 0)
+ return ret;
+ }
+
return 0;
}
--
1.9.1
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