[PATCH RFC v2 18/24] drm/panel: implement .get_next_bridge

[Luca Ceresoli]

This bridge never has a next bridge. Add get_next_callback func to expose
this.

Signed-off-by: Luca Ceresoli <luca.ceresoli at bootlin.com>
---
 drivers/gpu/drm/drm_panel.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c
index c00529bfb706..8a2a99cca683 100644
--- a/drivers/gpu/drm/drm_panel.c
+++ b/drivers/gpu/drm/drm_panel.c
@@ -77,6 +77,11 @@ static const struct drm_connector_funcs panel_bridge_connector_funcs = {
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
+static struct drm_bridge *drm_panel_bridge_get_next_bridge(struct drm_bridge *bridge)
+{
+	return NULL;
+}
+
 static int panel_bridge_attach(struct drm_bridge *bridge,
 			       struct drm_encoder *encoder,
 			       enum drm_bridge_attach_flags flags)
@@ -217,6 +222,7 @@ static void panel_bridge_debugfs_init(struct drm_bridge *bridge,
 }
 
 static const struct drm_bridge_funcs panel_bridge_bridge_funcs = {
+	.get_next_bridge = drm_panel_bridge_get_next_bridge,
 	.attach = panel_bridge_attach,
 	.detach = panel_bridge_detach,
 	.atomic_pre_enable = panel_bridge_atomic_pre_enable,
@@ -600,7 +606,7 @@ void drm_panel_add(struct drm_panel *panel)
 	mutex_unlock(&panel_lock);
 
 	panel->bridge.of_node = panel->dev->of_node;
-	panel->bridge.ops = DRM_BRIDGE_OP_MODES;
+	panel->bridge.ops = DRM_BRIDGE_OP_MODES | DRM_BRIDGE_OP_GET_NEXT_BRIDGE;
 	panel->bridge.type = panel->connector_type;
 	panel->bridge.pre_enable_prev_first = panel->prepare_prev_first;
 

-- 
2.55.0