diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 080c8d361f1fc8917d8e84963625e41d9559a91a..75e0beeb37938a8b7e8b27be180420950a4f65fc 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -46,6 +46,26 @@
 #include "drm_crtc_internal.h"
 #include "drm_internal.h"
 
+/**
+ * drm_crtc_from_index - find the registered CRTC at an index
+ * @dev: DRM device
+ * @idx: index of registered CRTC to find for
+ *
+ * Given a CRTC index, return the registered CRTC from DRM device's
+ * list of CRTCs with matching index.
+ */
+struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx)
+{
+	struct drm_crtc *crtc;
+
+	drm_for_each_crtc(crtc, dev)
+		if (idx == crtc->index)
+			return crtc;
+
+	return NULL;
+}
+EXPORT_SYMBOL(drm_crtc_from_index);
+
 /**
  * drm_crtc_force_disable - Forcibly turn off a CRTC
  * @crtc: CRTC to turn off
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 6920dee3a2d1e9ba1701c8e6706b36772ad1c802..89daa77c37fcad6874aaa1dc548ea97fa4a3ed7f 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -822,6 +822,7 @@ int drm_crtc_force_disable(struct drm_crtc *crtc);
 int drm_crtc_force_disable_all(struct drm_device *dev);
 
 int drm_mode_set_config_internal(struct drm_mode_set *set);
+struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx);
 
 /* Helpers */
 static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,