From: Jarkko Nikula <jarkko.nikula@bitmer.com>
Date: Mon, 28 Apr 2014 12:17:52 +0000 (+0200)
Subject: ASoC: core: Add support for machine specific trigger callback
X-Git-Tag: v3.16-rc1~12^2~52^2~8^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4792b0dbcf3d41a19e76adc9c98c5cc889daa065;p=thirdparty%2Fkernel%2Flinux.git

ASoC: core: Add support for machine specific trigger callback

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>
Signed-off-by: Mark Brown <broonie@linaro.org>
---

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 2cedf09f6d961..a3a70214edee2 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;
 }