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| author |   Liam Girdwood <liam.r.girdwood@linux.intel.com> | 2018-07-06 13:50:36 +0100 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2018-07-06 15:00:25 +0200 |
| commit | d64c5cf8e89d124355924c513a42b16f0d7d3a03 (patch) | |
| tree | 2d75c2a4644e0492a1434e0b999ab1d5a5a31de0 /include/sound/pcm.h | |
| parent | ALSA: pcm: Use snd_pcm_stop_xrun() for xrun injection (diff) | |
| download | linux-dev-d64c5cf8e89d124355924c513a42b16f0d7d3a03.tar.xz linux-dev-d64c5cf8e89d124355924c513a42b16f0d7d3a03.zip | |
ALSA: pcm: Allow drivers to set R/W wait time.
Currently ALSA core blocks userspace for about 10 seconds for PCM R/W IO.
This needs to be configurable for modern hardware like DSPs where no
pointer update in milliseconds can indicate terminal DSP errors.
Add a substream variable to set the wait time in ms. This allows userspace
and drivers to recover more quickly from terminal DSP errors.
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/pcm.h')
| -rw-r--r-- | include/sound/pcm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index e054c583d3b3..fcdf358a25f0 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -462,6 +462,7 @@ struct snd_pcm_substream { /* -- timer section -- */ struct snd_timer *timer; /* timer */ unsigned timer_running: 1; /* time is running */ + long wait_time; /* time in ms for R/W to wait for avail */ /* -- next substream -- */ struct snd_pcm_substream *next; /* -- linked substreams -- */ |