The current bridge state is accessible from the drm_bridge structure,
but since it's fairly indirect it's not easy to figure out.
Provide a helper to retrieve it.
Signed-off-by: Maxime Ripard <mripard@xxxxxxxxxx>
---
include/drm/drm_bridge.h | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index cf7ab89e652a982510ae9df1f5972b9c6eb13cf2..7a3664770c3ab8634a69e953b37a30ac467139b3 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -955,10 +955,31 @@ static inline struct drm_bridge *of_drm_find_bridge(struct device_node *np)
{
return NULL;
}
#endif
+/**
+ * @drm_bridge_get_current_state() - Get the current bridge state
+ * @bridge: bridge object
+ *
+ * This function must be called with the modeset lock held.
+ *
+ * RETURNS:
+ *
+ * The current bridge state, or NULL if there is none.
+ */
+static inline struct drm_bridge_state *
+drm_bridge_get_current_state(struct drm_bridge *bridge)
+{
+ lockdep_assert_held(&bridge->base.lock.mutex.base);
+
+ if (!bridge)
+ return NULL;
+
+ return drm_priv_to_bridge_state(bridge->base.state);
+}
+
/**
* drm_bridge_get_next_bridge() - Get the next bridge in the chain
* @bridge: bridge object
*
* RETURNS:
--
2.48.0
