[alsa-devel] [PATCH 0/27]: ASoC: rsnd: add Renesas Gen2 DMAEngine support

Mark Brown broonie at kernel.org
Tue Jan 28 13:37:43 CET 2014

On Tue, Jan 28, 2014 at 01:06:29PM +0100, Lars-Peter Clausen wrote:

> The virt_dma helper functions already take care of some of the cyclic
> specific details. And more can probably be added. E.g. what comes to mind is
> the tracking of whether a descriptor is cyclic and which segment of the
> descriptor to submit next. All users of virt_dma already implement these in
> almost the same fashion. So this would not only to allow to factor out the
> handling for the cyclic case, but also for the non cyclic case. And for all
> users of those helpers cyclic support would essentially be free.

OK, I had a brief look and that does seem like the way forwards - I had
been remembering the last time this was discussed when the DMA guys were
pretty uncomfortable with the idea of doing things there but it seems
things are different now.
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