Change-Id: I63dce004f8d3c5dc6a7c71070f1fab0707286ea5
Signed-off-by: Lukasz Spintzyk <lukasz.spint...@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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