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authorFabio Estevam <fabio.estevam@freescale.com>2013-08-29 10:32:13 -0300
committerMark Brown <broonie@linaro.org>2013-09-01 16:29:27 +0100
commitd6bead020d8f8bcaca5cdcb035250c44b21c93e7 (patch)
treecca1acff1246987d91bffe6906e82f0d38136e6b
parent6b4c80f947df9d92b97eb62afc29dda6d7220c7d (diff)
ASoC: soc-pcm: Allow to specify unidirectional dai_link
Add 'playback_only' and 'capture_only' fields that can be used for specifying that a dai_link has a unidirectional capability. The motivation for this is for the cases of systems, such as Freescale MX28, that has two unidirectional DAIs. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
-rw-r--r--include/sound/soc.h4
-rw-r--r--sound/soc/soc-pcm.c10
2 files changed, 14 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h
index c0ac3bc7b7f..65414e82c76 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -936,6 +936,10 @@ struct snd_soc_dai_link {
/* machine stream operations */
const struct snd_soc_ops *ops;
const struct snd_soc_compr_ops *compr_ops;
+
+ /* For unidirectional dai links */
+ bool playback_only;
+ bool capture_only;
};
struct snd_soc_codec_conf {
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index b6c640332a1..9abaa52efb2 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2027,6 +2027,16 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
capture = 1;
}
+ if (rtd->dai_link->playback_only) {
+ playback = 1;
+ capture = 0;
+ }
+
+ if (rtd->dai_link->capture_only) {
+ playback = 0;
+ capture = 1;
+ }
+
/* create the PCM */
if (rtd->dai_link->no_pcm) {
snprintf(new_name, sizeof(new_name), "(%s)",