linux-kernel - [PATCH 02/11] drm/mediatek: Initialize colorops when creating plane

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Message-Id: <20251223-mtk-ovl-pre-blend-colorops-v1-2-0cb99bd0ab33@collabora.com>
Date: Tue, 23 Dec 2025 16:44:43 -0300
From: Nícolas F. R. A. Prado <nfraprado@...labora.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Chun-Kuang Hu <chunkuang.hu@...nel.org>, 
 Philipp Zabel <p.zabel@...gutronix.de>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 linux-mediatek@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
 daniels@...labora.com, ariel.dalessandro@...labora.com, 
 kernel@...labora.com, 
 Nícolas F. R. A. Prado <nfraprado@...labora.com>
Subject: [PATCH 02/11] drm/mediatek: Initialize colorops when creating
 plane

During initialization of a plane, if the DDP component supplying it
defines a plane_colorops_init() hook, call it to initialize the color
pipeline on the plane.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
---
 drivers/gpu/drm/mediatek/mtk_crtc.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_crtc.c b/drivers/gpu/drm/mediatek/mtk_crtc.c
index 22f255c3ddd3..f7db235d986f 100644
--- a/drivers/gpu/drm/mediatek/mtk_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_crtc.c
@@ -985,8 +985,10 @@ static int mtk_crtc_init_comp_planes(struct drm_device *drm_dev,
 	int i, ret;

 	for (i = 0; i < num_planes; i++) {
+		struct drm_plane *plane = &mtk_crtc->planes[mtk_crtc->layer_nr];
+
 		ret = mtk_plane_init(drm_dev,
-				&mtk_crtc->planes[mtk_crtc->layer_nr],
+				plane,
 				BIT(pipe),
 				mtk_crtc_plane_type(mtk_crtc->layer_nr, num_planes),
 				mtk_ddp_comp_supported_rotations(comp),
@@ -997,6 +999,12 @@ static int mtk_crtc_init_comp_planes(struct drm_device *drm_dev,
 		if (ret)
 			return ret;

+		if (comp->funcs && comp->funcs->plane_colorops_init) {
+			ret = comp->funcs->plane_colorops_init(comp->dev, plane);
+			if (ret)
+				return ret;
+		}
+
 		mtk_crtc->layer_nr++;
 	}
 	return 0;

-- 
2.51.0