[alsa-devel] [RFC 4/7] ASoC: Add dmaengine PCM helper functions
broonie at opensource.wolfsonmicro.com
Mon Mar 5 13:41:41 CET 2012
On Mon, Mar 05, 2012 at 01:30:42PM +0100, Lars-Peter Clausen wrote:
> On 03/02/2012 02:59 PM, Mark Brown wrote:
> > Please resend the ep93xx conversion along with the tweak to the core so
> > we can get that working.
> I was at trade show for the rest of last week, without much time for
> anything else. I will submit the missing patches in a moment.
No problem, I figured it was something like that and didn't see any
reason not to get the changes into 3.4 - it's a substantial win all
round and the fixes are pretty minior.
> > It would also be good to update FSI to use this library as it's also
> > using dmaengine (the patch having been merged just before this one it
> > got missed in the updates I expect).
> I've had a look at the FSI dmaengine driver and it is not straight forward
> to convert. For one it does not use cyclic dma transfers so it is more
> something for Russel's patch and on the other hand the FSI PCM driver
> introduces another layer of indirection which is used to be able to switch
> between PIO and DMA. But as a result the functions the dmaengine PCM
> framework provides don't really fit anymore.
OK, fair enough.
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