[st-ericsson] v4l2 vs omx for camera

Edward Hervey bilboed at gmail.com
Tue Mar 1 02:25:45 PST 2011

On Mon, 2011-02-28 at 09:50 +0100, Marek Szyprowski wrote:
> Hello,
> I'm not sure that highmem is the right solution. First, this will force
> systems with rather small amount of memory (like 256M) to use highmem just
> to support DMA allocable memory. It also doesn't solve the issue with
> specific memory requirement for our DMA hardware (multimedia codec needs
> video memory buffers from 2 physical banks).

  Could you explain why a codec would require memory buffers from 2
physical banks ?



> The relocation issue has been already addressed in the last CMA patch series.
> Michal managed to create a framework that allowed to relocate on demand any
> pages from the CMA area.
> Best regards
> --
> Marek Szyprowski
> Samsung Poland R&D Center

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