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drm: mali-dp: Add YUV->RGB conversion support for video layers

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Internally Mali DP uses an RGB pipeline so video layers that support
YUV input buffers need to convert the input data to RGB. The YUV
buffers can have various encodings and this patch introduces support
for BT.601, BT.709 and BT.2020 encodings, both limited and full ranges.

This patch adds support for specifying the color encoding of the
input buffers for the planes that are backed by the video layers
and programs the YUV2RGB coefficients into hardware based on the
selected encoding.

Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
[updated to use standard properties]
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
This commit is contained in:
Mihail Atanassov
2017-11-07 15:30:46 +00:00
committed by Liviu Dudau
parent 57085dca98
commit 6e810eb508
4 changed files with 90 additions and 17 deletions
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3
drivers/gpu/drm/arm/malidp_hw.h
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@@ -58,7 +58,8 @@ struct malidp_layer {
u16 id; /* layer ID */
u16 base; /* address offset for the register bank */
u16 ptr; /* address offset for the pointer register */
u16 stride_offset; /* Offset to the first stride register. */
u16 stride_offset; /* offset to the first stride register. */
s16 yuv2rgb_offset; /* offset to the YUV->RGB matrix entries */
};
enum malidp_scaling_coeff_set {