[RFC,v4,26/42] drm/colorop: pass plane_color_pipeline client cap to atomic check

Commit Message

Harry Wentland Feb. 26, 2024, 9:10 p.m. UTC

Drivers will need to know whether an atomic check/commit
originated from a client with DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE
so they can ignore deprecated properties, like COLOR_ENCODING
and COLOR_RANGE.

Pass the plane_color_pipeline bit to drm_atomic_state.

Signed-off-by: Harry Wentland <[e-mail]>
---
 drivers/gpu/drm/drm_atomic_uapi.c |  1 +
 include/drm/drm_atomic.h          | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)

Patch

diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index 23b248987a7c..c7c1c614b0d9 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -1571,6 +1571,7 @@  int drm_mode_atomic_ioctl(struct drm_device *dev,
 	drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
 	state->acquire_ctx = &ctx;
 	state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
+	state->plane_color_pipeline = file_priv->plane_color_pipeline;
 
 retry:
 	copied_objs = 0;
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 2346f19eda9f..61e6b5553eec 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -404,6 +404,23 @@  struct drm_atomic_state {
 	 * states.
 	 */
 	bool duplicated : 1;
+
+	/**
+	 * @plane_color_pipeline : 1
+	 *
+	 * Indicates whether this atomic state originated with a client that
+	 * set the DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE.
+	 *
+	 * Drivers and helper functions should use this to ignore legacy
+	 * properties that are incompatible with the drm_plane COLOR_PIPELINE
+	 * behavior, such as
+	 *  - COLOR_RANGE
+	 *  - COLOR_ENCODING
+	 * or any other driver-specific properties that might affect pixel
+	 * values.
+	 */
+	bool plane_color_pipeline : 1;
+
 	struct __drm_colorops_state *colorops;
 	struct __drm_planes_state *planes;
 	struct __drm_crtcs_state *crtcs;