[RFC 0/2] New feature: Framebuffer processors

[Inki Dae]

Hi,

2016년 08월 23일 18:41에 Daniel Stone 이(가) 쓴 글:
> Hi,
> 
> On 22 August 2016 at 16:23, Rob Clark <robdclark at gmail.com> wrote:
>> I guess a lot comes down to 'how long before hw designers bolt a CP to
>> the thing'..  at that point, I think you especially don't want a
>> per-blit kernel interface.
> 
> Regardless of whether or not we want it, we already _have_ it, in the
> form of V4L2 M2M. There are already a few IP blocks working on that, I
> believe. If V4L2 <-> KMS interop is painful, well, we need to fix that
> anyway ...

So we are trying this. We had expereneced using V4L2 and DRM together on Linux Platform makes it too complicated, and also integrated DRM with M2M such as 2D and Post processor makes it simplified.
So We have been trying to move existing V4L2 based drivers into DRM excepting HW Video Codec - called it MFC - and Camera sensor and relevant things.
I think now V4L2 and DRM frameworks may make many engineers confusing because there are the same devices which can be controlled by V4L2 and DRM frameworks - maybe we would need more efforts like Laurent did with Live source[1] in the future.

Anyway, sad to say, it seems other maintainers leave NAK for this patch series because this trying had failed already long time ago - they had learned such thing didn't work well. So seems we have to keep this in only Exynos DRM.


[1] https://lwn.net/Articles/640290/

Thanks,
Inki Dae

> 
> Cheers,
> Daniel
> --
> To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> 
>