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6b058fda9d
These changes are required due to the kernel
commit 07b7acb51d283d8469696c906b91f1882696a4d4
("ASoC: rsnd: update pointer more accurate")
Issue is that snd_pcm_wait() goes back to waiting because the hw_ptr
is not period aligned. Therefore snd_pcm_wait() will block for a longer
time as required.
With these rcar driver changes the exact position of the dma is returned.
During snd_pcm_start they read hw_ptr as reference, and this hw_ptr
is now not period aligned, and is a little ahead over the period while it
is read. Therefore when the avail is calculated during snd_pcm_wait(),
it is missing the avail_min by a few frames.
An additional option hw_ptr_alignment is provided to dmix configuration,
to allow the user to configure the slave application and hw pointer
alignment at startup
[ Slight indentation and parentheses removals by tiwai ]
Signed-off-by: Laxmi Devi <Laxmi.Devi@in.bosch.com>
Signed-off-by: Timo Wischer <twischer@de.adit-jv.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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| .. | ||
| alisp | ||
| conf | ||
| control | ||
| hwdep | ||
| mixer | ||
| pcm | ||
| rawmidi | ||
| seq | ||
| timer | ||
| topology | ||
| ucm | ||
| async.c | ||
| conf.c | ||
| confmisc.c | ||
| dlmisc.c | ||
| error.c | ||
| input.c | ||
| Makefile.am | ||
| names.c | ||
| output.c | ||
| shmarea.c | ||
| socket.c | ||
| userfile.c | ||
| Versions.in | ||