[PATCH 1/1] drm: Add dirty_rects atomic blob property for drm_plane

[Lukasz Spintzyk <lukasz.spintzyk@displaylink.com>]

Change-Id: I63dce004f8d3c5dc6a7c71070f1fab0707286ea5
Signed-off-by: Lukasz Spintzyk <lukasz.spintzyk@displaylink.com>
---
 drivers/gpu/drm/drm_atomic.c      | 10 ++++++++++
 drivers/gpu/drm/drm_mode_config.c |  6 ++++++
 drivers/gpu/drm/drm_plane.c       |  1 +
 include/drm/drm_mode_config.h     |  5 +++++
 include/drm/drm_plane.h           |  3 +++
 5 files changed, 25 insertions(+)

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index b76d49218cf1..cd3b4ed7b04c 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -759,6 +759,14 @@ static int drm_atomic_plane_set_property(struct drm_plane *plane,
 		state->rotation = val;
 	} else if (property == plane->zpos_property) {
 		state->zpos = val;
+	} else if (property == config->dirty_rects_property) {
+		bool replaced = false;
+		int ret = drm_atomic_replace_property_blob_from_id(dev,
+					&state->dirty_blob,
+					val,
+					-1,
+					&replaced);
+		return ret;
 	} else if (plane->funcs->atomic_set_property) {
 		return plane->funcs->atomic_set_property(plane, state,
 				property, val);
@@ -818,6 +826,8 @@ drm_atomic_plane_get_property(struct drm_plane *plane,
 		*val = state->rotation;
 	} else if (property == plane->zpos_property) {
 		*val = state->zpos;
+	} else if (property == config->dirty_rects_property) {
+		*val = (state->dirty_blob) ? state->dirty_blob->base.id : 0;
 	} else if (plane->funcs->atomic_get_property) {
 		return plane->funcs->atomic_get_property(plane, state, property, val);
 	} else {
diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c
index bc5c46306b3d..d5f1021c6ece 100644
--- a/drivers/gpu/drm/drm_mode_config.c
+++ b/drivers/gpu/drm/drm_mode_config.c
@@ -293,6 +293,12 @@ static int drm_mode_create_standard_properties(struct drm_device *dev)
 		return -ENOMEM;
 	dev->mode_config.prop_crtc_id = prop;
 
+	prop = drm_property_create(dev, DRM_MODE_PROP_BLOB,
+			"DIRTY_RECTS", 0);
+	if (!prop)
+		return -ENOMEM;
+	dev->mode_config.dirty_rects_property = prop;
+
 	prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
 			"ACTIVE");
 	if (!prop)
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 37a93cdffb4a..add110f025e5 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -258,6 +258,7 @@ int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
 		drm_object_attach_property(&plane->base, config->prop_src_y, 0);
 		drm_object_attach_property(&plane->base, config->prop_src_w, 0);
 		drm_object_attach_property(&plane->base, config->prop_src_h, 0);
+		drm_object_attach_property(&plane->base, config->dirty_rects_property, 0);
 	}
 
 	if (config->allow_fb_modifiers)
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
index e5f3b43014e1..65f64eb04c0c 100644
--- a/include/drm/drm_mode_config.h
+++ b/include/drm/drm_mode_config.h
@@ -599,6 +599,11 @@ struct drm_mode_config {
 	 * &drm_crtc.
 	 */
 	struct drm_property *prop_crtc_id;
+	/**
+	 * @dirty_rects_property: Optional plane property to mark damaged
+	 * regions on the plane framebuffer.
+	 */
+	struct drm_property *dirty_rects_property;
 	/**
 	 * @prop_active: Default atomic CRTC property to control the active
 	 * state, which is the simplified implementation for DPMS in atomic
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index 8185e3468a23..7d45b164ccce 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -131,6 +131,9 @@ struct drm_plane_state {
 	 */
 	struct drm_crtc_commit *commit;
 
+	/* Optional blob property with damaged regions. */
+	struct drm_property_blob *dirty_blob;
+
 	struct drm_atomic_state *state;
 };
 
-- 
2.15.1

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