> There exist staging drivers for the scaler and blitters, but I don't
> know were they are maintained. There is also a staging driver for
> the video capture driver and ISP. All this is implementing standard
> V4L2 APIs which connect well together. V4L2 framework profile DMABuf
> support, which should cover the bridging with the GPU side / Mesa.
Yes, that is what I am planning to do.