[PATCH v2 25/43] drm/sun4i: frontend: Apply format sub-sampling to CH1 dimensions

Maxime Ripard
2018-11-27T08:58:33Z

On Fri, Nov 23, 2018 at 10:24:57AM +0100, Paul Kocialkowski wrote:
> The frontend comes with two "channels", that can be configured
> independently. When used in YUV mode, the first channel (CH0) represents
> the luminance component while the second channel (CH1) represents the
> chrominance. In RGB mode, both have to be configured the same way.
>
> Use variables (with the YUV terminology) for each channel's
> dimensions, calculating the chroma dimensions from the luma dimensions
> and the sub-sampling factors from the format description.
>
> Since the configured size only has pixel precision, the fractional
> fixed-point part of the source size is dropped for both components to
> ensure that the scaling factors are accurate.
>
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>

Applied, thanks!
Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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