[Intel-gfx] [PATCH v2 7/9] drm: Connector helper function to release atomic state

[Dhinakaran Pandiyan]

Having a ->atomic_release callback is useful to release shared resources
that get allocated in compute_config().

Suggested-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
---
 include/drm/drm_modeset_helper_vtables.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h
index 46f5b34..e41b18a 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -831,6 +831,21 @@ struct drm_connector_helper_funcs {
 	 */
 	struct drm_encoder *(*atomic_best_encoder)(struct drm_connector *connector,
 						   struct drm_connector_state *connector_state);
+
+	/**
+	 * @atomic_release:
+	 *
+	 * This function is used to release shared resources that were
+	 * previously acquired. For example, resources acquired in
+	 * encoder->compute_config() can be released by calling this function
+	 * from mode_fixup()
+	 *
+	 * NOTE:
+	 *
+	 * This function is called in the check phase of an atomic update.
+	 */
+	void (*atomic_release)(struct drm_connector *connector,
+			       struct drm_connector_state *connector_state);
 };
 
 /**
-- 
2.7.4