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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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8
drivers/gpu/drm/drm_atomic_uapi.c
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@@ -705,6 +705,10 @@ static int drm_atomic_color_set_data_property(struct drm_colorop *colorop,
case DRM_COLOROP_CTM_3X4:
size = sizeof(struct drm_color_ctm_3x4);
break;
case DRM_COLOROP_3D_LUT:
size = colorop->size * colorop->size * colorop->size *
sizeof(struct drm_color_lut32);
break;
default:
/* should never get here */
return -EINVAL;
@@ -732,6 +736,8 @@ static int drm_atomic_colorop_set_property(struct drm_colorop *colorop,
state->curve_1d_type = val;
} else if (property == colorop->multiplier_property) {
state->multiplier = val;
} else if (property == colorop->lut3d_interpolation_property) {
colorop->lut3d_interpolation = val;
} else if (property == colorop->data_property) {
return drm_atomic_color_set_data_property(colorop, state,
property, val);
@@ -763,6 +769,8 @@ drm_atomic_colorop_get_property(struct drm_colorop *colorop,
*val = state->multiplier;
else if (property == colorop->size_property)
*val = colorop->size;
else if (property == colorop->lut3d_interpolation_property)
*val = colorop->lut3d_interpolation;
else if (property == colorop->data_property)
*val = (state->data) ? state->data->base.id : 0;
else