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drm/colorop: Add 3D LUT support to color pipeline

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It is to be used to enable HDR by allowing userpace to create and pass
3D LUTs to kernel and hardware.

new drm_colorop_type: DRM_COLOROP_3D_LUT.

Reviewed-by: Simon Ser <contact@emersion.fr>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Melissa Wen <mwen@igalia.com>
Reviewed-by: Sebastian Wick <sebastian.wick@redhat.com>
Signed-off-by: Simon Ser <contact@emersion.fr>
Link: https://patch.msgid.link/20251115000237.3561250-46-alex.hung@amd.com
This commit is contained in:
Alex Hung
2025-11-14 17:02:10 -07:00
committed by Simon Ser
parent 2468963482
commit db971856bb
5 changed files with 143 additions and 0 deletions
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34
include/uapi/drm/drm_mode.h
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@@ -942,6 +942,40 @@ enum drm_colorop_type {
* property.
*/
DRM_COLOROP_MULTIPLIER,
/**
* @DRM_COLOROP_3D_LUT:
*
* enum string "3D LUT"
*
* A 3D LUT of &drm_color_lut32 entries,
* packed into a blob via the DATA property. The driver's expected
* LUT size is advertised via the SIZE property, i.e., a 3D LUT with
* 17x17x17 entries will have SIZE set to 17.
*
* The DATA blob is a 3D array of struct drm_color_lut32 with dimension
* length of "size".
* The LUT elements are traversed like so:
*
* for B in range 0..n
* for G in range 0..n
* for R in range 0..n
* index = R + n * (G + n * B)
* color = lut3d[index]
*/
DRM_COLOROP_3D_LUT,
};
/**
* enum drm_colorop_lut3d_interpolation_type - type of 3DLUT interpolation
*/
enum drm_colorop_lut3d_interpolation_type {
/**
* @DRM_COLOROP_LUT3D_INTERPOLATION_TETRAHEDRAL:
*
* Tetrahedral 3DLUT interpolation
*/
DRM_COLOROP_LUT3D_INTERPOLATION_TETRAHEDRAL,
};
/**