[alsa-devel] [PATCH 11/20] OMAP: McBSP: Add link DMA mode selection

Eduardo Valentin eduardo.valentin at nokia.com
Mon Aug 3 12:15:21 CEST 2009

On Thu, Jul 30, 2009 at 03:47:25PM +0200, ext Mark Brown wrote:
> On Thu, Jul 30, 2009 at 04:28:08PM +0300, Eduardo Valentin wrote:
> > On Thu, Jul 30, 2009 at 03:04:42PM +0200, ext Mark Brown wrote:
> > > Is this really something that people would want to tweak at runtime
> > > (except for test purposes)?
> > Yes, test purposes, bug also, the same link could be sometime used for low-power
> > playback while sometime for low-latency processing where as accurate as
> > possible DMA pointer position info is needed.
> Latency you *should* be able to infer from the application behaviour.
Yes that's true. But I think using ELEMENT mode, position reports are much more accurate,
which will result in more precise inferences for latencies.

Eduardo Valentin
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