[PATCH v4 03/32] drm/drm_plane: track color mgmt changes per plane

Melissa Wen mwen at igalia.com
Thu Oct 5 17:14:58 UTC 2023


We will add color mgmt properties to DRM planes in the next patches and
we want to track when one of this properties change to define atomic
commit behaviors. Using a similar approach from CRTC color props, we set
a color_mgmt_changed boolean whenever a plane color prop changes.

Reviewed-by: Harry Wentland <harry.wentland at amd.com>
Signed-off-by: Melissa Wen <mwen at igalia.com>
---
 drivers/gpu/drm/drm_atomic.c              | 1 +
 drivers/gpu/drm/drm_atomic_state_helper.c | 1 +
 include/drm/drm_plane.h                   | 7 +++++++
 3 files changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 2c454568a607..2925371d230d 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -724,6 +724,7 @@ static void drm_atomic_plane_print_state(struct drm_printer *p,
 		   drm_get_color_encoding_name(state->color_encoding));
 	drm_printf(p, "\tcolor-range=%s\n",
 		   drm_get_color_range_name(state->color_range));
+	drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed);
 
 	if (plane->funcs->atomic_print_state)
 		plane->funcs->atomic_print_state(p, state);
diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c
index 784e63d70a42..25bb0859fda7 100644
--- a/drivers/gpu/drm/drm_atomic_state_helper.c
+++ b/drivers/gpu/drm/drm_atomic_state_helper.c
@@ -338,6 +338,7 @@ void __drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane,
 	state->fence = NULL;
 	state->commit = NULL;
 	state->fb_damage_clips = NULL;
+	state->color_mgmt_changed = false;
 }
 EXPORT_SYMBOL(__drm_atomic_helper_plane_duplicate_state);
 
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index 51291983ea44..52c3287da0da 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -237,6 +237,13 @@ struct drm_plane_state {
 
 	/** @state: backpointer to global drm_atomic_state */
 	struct drm_atomic_state *state;
+
+	/**
+	 * @color_mgmt_changed: Color management properties have changed. Used
+	 * by the atomic helpers and drivers to steer the atomic commit control
+	 * flow.
+	 */
+	bool color_mgmt_changed : 1;
 };
 
 static inline struct drm_rect
-- 
2.40.1



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