linux-kernel - [PATCH v3 07/21] drm/atomic: Pass crtc_color

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20251223-mtk-post-blend-color-pipeline-v3-7-7d969f9a37a0@collabora.com>
Date: Tue, 23 Dec 2025 15:01:27 -0300
From: Ariel D'Alessandro <ariel.dalessandro@...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>, 
 Louis Chauvet <louis.chauvet@...tlin.com>, 
 Haneen Mohammed <hamohammed.sa@...il.com>, 
 Melissa Wen <melissa.srw@...il.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 linux-mediatek@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
 kernel@...labora.com, 
 Nícolas F. R. A. Prado <nfraprado@...labora.com>, 
 Ariel D'Alessandro <ariel.dalessandro@...labora.com>
Subject: [PATCH v3 07/21] drm/atomic: Pass crtc_color_pipeline client cap
 to atomic check

From: "Nícolas F. R. A. Prado" <nfraprado@...labora.com>

Pass the state of the CRTC (post-blend) color pipeline client cap to the
atomic state so that drivers can rely on it to enable color pipeline
functionality and ignore the deprecated color management CRTC
properties.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
Co-developed-by: Ariel D'Alessandro <ariel.dalessandro@...labora.com>
Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@...labora.com>
Reviewed-by: Louis Chauvet <louis.chauvet@...tlin.com>
---
 drivers/gpu/drm/drm_atomic_uapi.c |  1 +
 include/drm/drm_atomic.h          | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index d1bc78b2567a9..03f5a80448d10 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -1668,6 +1668,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
 	state->acquire_ctx = &ctx;
 	state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
 	state->plane_color_pipeline = file_priv->plane_color_pipeline;
+	state->crtc_color_pipeline = file_priv->crtc_color_pipeline;

 retry:
 	copied_objs = 0;
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 74ce26fa8838b..7eb21c0426105 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -560,6 +560,26 @@ struct drm_atomic_state {
 	 */
 	bool plane_color_pipeline : 1;

+	/**
+	 * @crtc_color_pipeline:
+	 *
+	 * Indicates whether this atomic state originated with a client that
+	 * set the DRM_CLIENT_CAP_CRTC_COLOR_PIPELINE.
+	 *
+	 * Drivers and helper functions should use this to ignore legacy
+	 * properties that are incompatible with the drm_crtc COLOR_PIPELINE
+	 * behavior, such as:
+	 *
+	 *  - GAMMA_LUT
+	 *  - DEGAMMA_LUT
+	 *  - GAMMA_LUT_SIZE
+	 *  - CTM
+	 *
+	 * or any other driver-specific properties that might affect pixel
+	 * values.
+	 */
+	bool crtc_color_pipeline : 1;
+
 	/**
 	 * @colorops:
 	 *

-- 
2.51.0