1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 3488ff067c69..46655339003d 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -939,3 +939,23 @@ int drm_crtc_create_scaling_filter_property(struct drm_crtc *crtc,
 	return 0;
 }
 EXPORT_SYMBOL(drm_crtc_create_scaling_filter_property);
+
+/**
+ * drm_crtc_in_clone_mode - check if the given CRTC state is in clone mode
+ *
+ * @crtc_state: CRTC state to check
+ *
+ * This function determines if the given CRTC state is being cloned by multiple
+ * encoders.
+ *
+ * RETURNS:
+ * True if the CRTC state is in clone mode. False otherwise
+ */
+bool drm_crtc_in_clone_mode(struct drm_crtc_state *crtc_state)
+{
+	if (!crtc_state)
+		return false;
+
+	return hweight32(crtc_state->encoder_mask) > 1;
+}
+EXPORT_SYMBOL(drm_crtc_in_clone_mode);