drm/msm/mdp: Add Software Pixel Extension support
In order to produce an image, the scalar needs to be fed extra pixels. These top/bottom/left/right values depend on a various of factors, including resolution, scaling type, phase step and initial phase. Pixel Extension are programmed by hardware in most targets - and can be overwritten by software. For some targets (e.g.: msm8996), software *must* program those registers. In order to ease this computation, let's always use bilinear filters, which are easier to program from kernel. Eventually, all of these values will come down from user space for better quality. Signed-off-by:Stephane Viau <sviau@codeaurora.org> Signed-off-by:
Rob Clark <robdclark@gmail.com>
parent
95651cd9
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