From: Jarkko Nikula jarkko.nikula@bitmer.com
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@bitmer.com Signed-off-by: Stefan Roese sr@denx.de --- 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; }