[alsa-devel] [PATCH 19/19] ASoC: fsi: Add DMAEngine support

Mark Brown broonie at opensource.wolfsonmicro.com
Fri Feb 3 14:48:51 CET 2012

On Fri, Feb 03, 2012 at 12:59:33AM -0800, Kuninori Morimoto wrote:

> +static void fsi_dma_do_tasklet(unsigned long data)
> +{

So, we're getting more and more drivers converted over to dmaengine
(I've CCed a random selection of people working on relevant drivers and
Vinod).  This means we're getting a bunch of drivers that talk to the
ALSA API on the top and the dmaengine API on the bottom and seem to need
to implement very similar code patterns (like this tasklet to push the
DMA through).  This feels like we need some sort of abstraction to
factor out some code here, either library code or perhaps a framework
driver with callbacks that fill in the platform specifics - if the APIs
are providing useful abstractions then presumably a large part of this
is just translating between them.

If that's not doable then what are the problems?
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