2016년 08월 24일 20:57에 Daniel Vetter 이(가) 쓴 글: > On Wed, Aug 24, 2016 at 08:44:24PM +0900, Inki Dae wrote: >> Hi, >> >> 2016년 08월 23일 18:41에 Daniel Stone 이(가) 쓴 글: >>> Hi, >>> >>> On 22 August 2016 at 16:23, Rob Clark <robdclark@xxxxxxxxx> 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. > > Can you pls explain in more detail where working with both v4l and drm > drivers and making them cooperate using dma-bufs poses problems? We should > definitely fix that. I think it would be most Linux Platforms - Android, Chrome and Tizen - which would use OpenMAX/GStreammer for Multimedia and X or Wayland/SurfaceFlinger for Display. Thanks, Inki Dae > -Daniel > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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