From: Melissa Wen <mwen@igalia.com>
Date: Tue, 9 Dec 2025 15:09:06 +0000 (-0300)
Subject: drm/amd/display: expose plane blend LUT in HW with MCM
X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=ff205dc95a897b4b8c093b665702e83bffd04dc9;p=linux-2.6-microblaze.git

drm/amd/display: expose plane blend LUT in HW with MCM

Since commit 39923050615cd ("drm/amd/display: Clear DPP 3DLUT Cap")
there is a flag in the mpc_color_caps that indicates the pre-blend usage
of MPC color caps. Do the same as commit 9e5d4a5e27c6 ("drm/amd/display:
Use mpc.preblend flag to indicate preblend") and use the mpc.preblend
flag to expose plane blend LUT/TF properties on AMD display driver.

CC: Matthew Schwartz <matthew.schwartz@linux.dev>
Signed-off-by: Melissa Wen <mwen@igalia.com>
Tested-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
index d3e62f511c8f..ce56734c09b8 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
@@ -1650,7 +1650,7 @@ dm_atomic_plane_attach_color_mgmt_properties(struct amdgpu_display_manager *dm,
 					   MAX_COLOR_3DLUT_SIZE);
 	}
 
-	if (dpp_color_caps.ogam_ram) {
+	if (dpp_color_caps.ogam_ram || dm->dc->caps.color.mpc.preblend) {
 		drm_object_attach_property(&plane->base,
 					   mode_info.plane_blend_lut_property, 0);
 		drm_object_attach_property(&plane->base,