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authorLiam Girdwood <lrg@ti.com>2012-04-25 12:12:53 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-04-26 17:48:19 +0100
commit47c88ffff73d27425be59b34a6d5a91518b5ebed (patch)
tree811a0b42807f3d061a2fa682f1e25e4210407fa1 /sound/soc/soc-core.c
parent618dae11f809aaccd05710aa8cee8c46a9cef1a7 (diff)
ASoC: dpcm: Add API for DAI link substream and runtime lookup
Some component drivers will need to be able to look up their DAI link substream and RTD data. Provide a mechanism for this. Signed-off-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/soc-core.c')
-rw-r--r--sound/soc/soc-core.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 201a4d003b9..4d8869852ad 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -465,6 +465,35 @@ static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
}
#endif
+struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
+ const char *dai_link, int stream)
+{
+ int i;
+
+ for (i = 0; i < card->num_links; i++) {
+ if (card->rtd[i].dai_link->no_pcm &&
+ !strcmp(card->rtd[i].dai_link->name, dai_link))
+ return card->rtd[i].pcm->streams[stream].substream;
+ }
+ dev_dbg(card->dev, "failed to find dai link %s\n", dai_link);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
+
+struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
+ const char *dai_link)
+{
+ int i;
+
+ for (i = 0; i < card->num_links; i++) {
+ if (!strcmp(card->rtd[i].dai_link->name, dai_link))
+ return &card->rtd[i];
+ }
+ dev_dbg(card->dev, "failed to find rtd %s\n", dai_link);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
+
#ifdef CONFIG_SND_SOC_AC97_BUS
/* unregister ac97 codec */
static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)