[PATCH RFC v2 07/20] drm/atomic: Pass post_blend_color_pipeline client cap to atomic check

[Nícolas F. R. A. Prado]

Pass the state of the 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 at collabora.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 f5125fa3fa28ff2a6ff07fd7cf07d4bdf77ab738..56a440a9390c7730c4c41b491f29b933a2bbb889 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -1660,6 +1660,7 @@ 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->post_blend_color_pipeline = file_priv->post_blend_color_pipeline;
 
 retry:
 	copied_objs = 0;
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 678708df9cdb90b4266127193a92183069f18688..8c42c584aefbf0034b2163d90538e80099b0dadb 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -482,6 +482,26 @@ struct drm_atomic_state {
 	 */
 	bool plane_color_pipeline : 1;
 
+	/**
+	 * @post_blend_color_pipeline:
+	 *
+	 * Indicates whether this atomic state originated with a client that
+	 * set the DRM_CLIENT_CAP_POST_BLEND_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 post_blend_color_pipeline : 1;
+
 	/**
 	 * @colorops:
 	 *

-- 
2.50.1