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-rw-r--r--include/drm/drm_connector.h38
1 files changed, 38 insertions, 0 deletions
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index a9b95246e26e..0e41a2e184a9 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -839,6 +839,11 @@ void drm_mode_put_tile_group(struct drm_device *dev,
* @dev: the DRM device
*
* Iterate over all connectors of @dev.
+ *
+ * WARNING:
+ *
+ * This iterator is not safe against hotadd/removal of connectors and is
+ * deprecated. Use drm_for_each_connector_iter() instead.
*/
#define drm_for_each_connector(connector, dev) \
for (assert_drm_connector_list_read_locked(&(dev)->mode_config), \
@@ -847,4 +852,37 @@ void drm_mode_put_tile_group(struct drm_device *dev,
&connector->head != (&(dev)->mode_config.connector_list); \
connector = list_next_entry(connector, head))
+/**
+ * struct drm_connector_list_iter - connector_list iterator
+ *
+ * This iterator tracks state needed to be able to walk the connector_list
+ * within struct drm_mode_config. Only use together with
+ * drm_connector_list_iter_get(), drm_connector_list_iter_put() and
+ * drm_connector_list_iter_next() respectively the convenience macro
+ * drm_for_each_connector_iter().
+ */
+struct drm_connector_list_iter {
+/* private: */
+ struct drm_device *dev;
+ struct drm_connector *conn;
+};
+
+void drm_connector_list_iter_get(struct drm_device *dev,
+ struct drm_connector_list_iter *iter);
+struct drm_connector *
+drm_connector_list_iter_next(struct drm_connector_list_iter *iter);
+void drm_connector_list_iter_put(struct drm_connector_list_iter *iter);
+
+/**
+ * drm_for_each_connector_iter - connector_list iterator macro
+ * @connector: struct &drm_connector pointer used as cursor
+ * @iter: struct &drm_connector_list_iter
+ *
+ * Note that @connector is only valid within the list body, if you want to use
+ * @connector after calling drm_connector_list_iter_put() then you need to grab
+ * your own reference first using drm_connector_reference().
+ */
+#define drm_for_each_connector_iter(connector, iter) \
+ while ((connector = drm_connector_list_iter_next(iter)))
+
#endif