diff options
| author | Peter Ujfalusi <peter.ujfalusi@nokia.com> | 2010-03-03 15:08:07 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-03-03 17:08:41 +0000 |
| commit | 258020d0882e89c1462800a70eb414b8a4fec78c (patch) | |
| tree | f2c9966e8d53db3c2fbf027407d45e2fd1b7f38d /include/sound/soc-dai.h | |
| parent | 377b6f62effcb91c53cd7ff8709a94d72d23b6ae (diff) | |
| download | linux-next-258020d0882e89c1462800a70eb414b8a4fec78c.tar.gz | |
ASoC: core: Add delay operation to snd_soc_dai_ops
The delay callback can be used by the core to query the delay
on the dai caused by FIFO or delay in the platform side.
In case if both CPU and CODEC dai has FIFO the delay reported
by each will be added to form the full delay on the chain.
If none of the dai has FIFO, than the delay will be kept as
zero.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/sound/soc-dai.h')
| -rw-r--r-- | include/sound/soc-dai.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h index 20de0bcaa137..6cf76a41501e 100644 --- a/include/sound/soc-dai.h +++ b/include/sound/soc-dai.h @@ -182,6 +182,12 @@ struct snd_soc_dai_ops { struct snd_soc_dai *); int (*trigger)(struct snd_pcm_substream *, int, struct snd_soc_dai *); + /* + * For hardware based FIFO caused delay reporting. + * Optional. + */ + snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *, + struct snd_soc_dai *); }; /* |