diff options
| author |   Mark Farrugia <mark.farrugia@fiberdyne.com.au> | 2019-04-03 17:41:32 +1100 |
|---|---|---|
| committer | Mark Farrugia <mark.farrugia@fiberdyne.com.au> | 2019-04-08 13:57:54 +1000 |
| commit | 8e151019a32b733420e2eb3006a5edaac5bc9589 (patch) | |
| tree | 0117c22646a7d880b71b1908957a00a347fdf020 /sound | |
| parent | 16912fcce2802752ba11b884d920c71cae5eb1c9 (diff) | |
Introduce 'unconfigure' callback
The 'unconfigure' callback can be used to clean up the 'configured'
state of an Audio Path, for when it is desired to reset the streams,
and/or reload a different stream configuration.
To destroy the streams, we must attempt to force their PCMs
closed. Take note though, that if a PCM is being written to when
an unconfigure command is issued, system instability may occur.
Signed-off-by: Mark Farrugia <mark.farrugia@fiberdyne.com.au>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/avirt.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/avirt.h b/sound/avirt.h index 9259d83..46756b3 100644 --- a/sound/avirt.h +++ b/sound/avirt.h @@ -36,6 +36,8 @@ struct snd_avirt_stream_array; /* Forward declaration */ typedef int (*snd_avirt_audiopath_configure)( struct snd_card *card, struct snd_avirt_stream_array *stream_array); +typedef int (*snd_avirt_audiopath_unconfigure)(void); + typedef void (*snd_avirt_pcm_exttrigger)(void); /** @@ -79,6 +81,7 @@ struct snd_avirt_audiopath { const struct snd_pcm_ops *pcm_playback_ops; /* ALSA PCM playback ops */ const struct snd_pcm_ops *pcm_capture_ops; /* ALSA PCM capture ops */ snd_avirt_audiopath_configure configure; /* Config callback function */ + snd_avirt_audiopath_unconfigure unconfigure; /* Unconfig cb function */ snd_avirt_pcm_exttrigger pcm_exttrigger; /* External trigger callback */ void *context; }; |