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-rw-r--r--drivers/gpu/drm/drm_atomic_helper.c3
-rw-r--r--drivers/gpu/drm/drm_damage_helper.c35
-rw-r--r--include/drm/drm_damage_helper.h2
3 files changed, 40 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index bc9fc9665614..5ed12144ceb7 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -32,6 +32,7 @@
#include <drm/drm_crtc_helper.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_writeback.h>
+#include <drm/drm_damage_helper.h>
#include <linux/dma-fence.h>
#include "drm_crtc_helper_internal.h"
@@ -862,6 +863,8 @@ drm_atomic_helper_check_planes(struct drm_device *dev,
drm_atomic_helper_plane_changed(state, old_plane_state, new_plane_state, plane);
+ drm_atomic_helper_check_plane_damage(state, new_plane_state);
+
if (!funcs || !funcs->atomic_check)
continue;
diff --git a/drivers/gpu/drm/drm_damage_helper.c b/drivers/gpu/drm/drm_damage_helper.c
index 8dc906a489a9..d04937556bc7 100644
--- a/drivers/gpu/drm/drm_damage_helper.c
+++ b/drivers/gpu/drm/drm_damage_helper.c
@@ -29,6 +29,7 @@
*
**************************************************************************/
+#include <drm/drm_atomic.h>
#include <drm/drm_damage_helper.h>
/**
@@ -81,3 +82,37 @@ void drm_plane_enable_fb_damage_clips(struct drm_plane *plane)
0);
}
EXPORT_SYMBOL(drm_plane_enable_fb_damage_clips);
+
+/**
+ * drm_atomic_helper_check_plane_damage - Verify plane damage on atomic_check.
+ * @state: The driver state object.
+ * @plane_state: Plane state for which to verify damage.
+ *
+ * This helper function makes sure that damage from plane state is discarded
+ * for full modeset. If there are more reasons a driver would want to do a full
+ * plane update rather than processing individual damage regions, then those
+ * cases should be taken care of here.
+ *
+ * Note that &drm_plane_state.fb_damage_clips == NULL in plane state means that
+ * full plane update should happen. It also ensure helper iterator will return
+ * &drm_plane_state.src as damage.
+ */
+void drm_atomic_helper_check_plane_damage(struct drm_atomic_state *state,
+ struct drm_plane_state *plane_state)
+{
+ struct drm_crtc_state *crtc_state;
+
+ if (plane_state->crtc) {
+ crtc_state = drm_atomic_get_new_crtc_state(state,
+ plane_state->crtc);
+
+ if (WARN_ON(!crtc_state))
+ return;
+
+ if (drm_atomic_crtc_needs_modeset(crtc_state)) {
+ drm_property_blob_put(plane_state->fb_damage_clips);
+ plane_state->fb_damage_clips = NULL;
+ }
+ }
+}
+EXPORT_SYMBOL(drm_atomic_helper_check_plane_damage);
diff --git a/include/drm/drm_damage_helper.h b/include/drm/drm_damage_helper.h
index 4947c614fff9..59584cbf3d40 100644
--- a/include/drm/drm_damage_helper.h
+++ b/include/drm/drm_damage_helper.h
@@ -35,5 +35,7 @@
#include <drm/drm_atomic_helper.h>
void drm_plane_enable_fb_damage_clips(struct drm_plane *plane);
+void drm_atomic_helper_check_plane_damage(struct drm_atomic_state *state,
+ struct drm_plane_state *plane_state);
#endif