drm/sun4i: backend: Detail the YUV to RGB values coding explanation

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The values in the BT601 YUV to RGB colorspace translation are not
simply coded as multiples, but rather as fixed-point signed fractional
values on a given number of bits. Add an explanation about that.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181123092515.2511-24-paul.kocialkowski@bootlin.com

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Paul Kocialkowski 2018-11-23 10:24:55 +01:00 • committed by Maxime Ripard

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commit dc7d4b655a

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drivers/gpu/drm/sun4i/sun4i_backend.c

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