drm/colorop: Add 1D Curve Custom LUT type

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We've previously introduced DRM_COLOROP_1D_CURVE for
pre-defined 1D curves. But we also have HW that supports
custom curves and userspace needs the ability to pass
custom curves, aka LUTs.

This patch introduces a new colorop type, called
DRM_COLOROP_1D_LUT that provides a SIZE property which
is used by a driver to advertise the supported SIZE
of the LUT, as well as a DATA property which userspace
uses to set the LUT.

DATA and size function in the same way as current drm_crtc
GAMMA and DEGAMMA LUTs.

Reviewed-by: Simon Ser <contact@emersion.fr>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Co-developed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Simon Ser <contact@emersion.fr>
Link: https://patch.msgid.link/20251115000237.3561250-38-alex.hung@amd.com

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Alex Hung 2025-11-14 17:02:02 -07:00 • committed by Simon Ser

parent 9452977513

commit 99a4e4f08a

5 changed files with 82 additions and 0 deletions

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4

drivers/gpu/drm/drm_atomic.c

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5

drivers/gpu/drm/drm_atomic_uapi.c

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43

drivers/gpu/drm/drm_colorop.c

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