[PATCH 00/20] ARM: pxa: move core and drivers to dmaengine

Daniel Mack zonque at gmail.com
Thu Aug 15 11:30:44 EDT 2013


On 15.08.2013 17:22, Robert Jarzmik wrote:
> Vinod Koul <vinod.koul at intel.com> writes:

>> If you submit C, and invoke dma_async_issue_pending(), C is queued
>> On B completetion, the DMA driver will start C and invoke callback for B.
>>
>> If B completes before C is submitted, after submit and invoking
>> dma_async_issue_pending(), the C buffer will be queued and started.
> OK, that settles it then. The API allows hot chaining, and if I understand
> Daniel's driver properly, he already thought about it (in
> append_pending_queue()).

Just for the records: it's not my driver :) I just added some functions
recently to make it work in DT and audio environments.

> I have some homework now Daniel, I'll send you my work to include into your
> patch serie for the review, and my tests of your patches.
> 
> I need a bit of time (1 or 2 weeks), because of holidays, for my patch.

Great, thanks a lot. I extracted some of the patches of my set to
individual trees so they can be merged for 3.12. I'll rebase my series
once 3.12-rc1 is released.


Many thanks for your help,
Daniel




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