drm/rockchip: vop2: Add YUV support to background color

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The VOP2 background color must be programmed with 10-bit precision,
using YUV format when the overlay operates in YUV mode, and RGB
otherwise.

Add the required RGB-to-YCbCr conversion logic, covering all color
spaces supported by the display controller: BT601L, BT601F, BT709L and
BT2020L.

Since the color is currently programmed to hardware on every atomic
commit, minimize the computation cost by splitting the work across the
two paths: in atomic_enable(), perform the conversion unconditionally
(the hardware state is unknown after power-on), while in atomic_flush(),
perform it only when the DRM property has actually changed.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Acked-by: Andy Yan <andyshrk@163.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20260601-vop2-bg-yuv-v2-2-e5aef1d16fec@collabora.com

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Cristian Ciocaltea 2026-06-01 21:00:04 +03:00 • committed by Heiko Stuebner

parent 09dfa47fc5

commit 28e670a088

1 changed files with 138 additions and 15 deletions

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drivers/gpu/drm/rockchip/rockchip_drm_vop2.c

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