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OpenCloudOS-Kernel
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Author SHA1 Message Date
Jernej Skrabec 1343bd6c23 drm/sun4i: Expand DE2 scaler lib with YUV support 
Basic principle of operation when using YUV framebuffer is that chroma
planes have to be upscaled to same size as luma.

Because of that, expand DE2 scaler library to support that.

BSP driver uses another set of FIR filter coefficients for YUV planes.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171201060550.10392-26-jernej.skrabec@siol.net
 2017-12-05 13:22:44 +01:00
Jernej Skrabec b862a648de drm/sun4i: Add support for HW scaling to DE2 
Scaling is currently supported only for RGB framebuffers

Coefficients and algorithm which coefficients to select are taken
from BSP driver.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171201060550.10392-22-jernej.skrabec@siol.net
 2017-12-05 13:22:44 +01:00