gpu/drm/drm_bridge_connector.c

24  * The DRM bridge connector helper object provides a DRM connector
30  * To use the helper, display controller drivers create a bridge connector with
36  * The DRM bridge connector operations are implemented based on the operations
38  * to the bridge closest to the connector (at the end of the chain) that
41  * To make use of this helper, all bridges in the chain shall report bridge
42  * operation flags (&drm_bridge->ops) and bridge output type
64 	 * The last bridge in the chain (closest to the connector) that provides
71 	 * The last bridge in the chain (closest to the connector) that provides
78 	 * The last bridge in the chain (closest to the connector) that provides
85 	 * The last bridge in the chain (closest to the connector) that provides
103 	struct drm_bridge *bridge;
106 	drm_for_each_bridge_in_chain(bridge_connector->encoder, bridge) {
107 		if (bridge->funcs->hpd_notify)
108 			bridge->funcs->hpd_notify(bridge, status);
215 	struct drm_bridge *bridge;
217 	list_for_each_entry(bridge, &encoder->bridge_chain, chain_node) {
218 		if (bridge->funcs->debugfs_init)
219 			bridge->funcs->debugfs_init(bridge, root);
239 					       struct drm_bridge *bridge)
249 	drm_edid = drm_bridge_edid_read(bridge, connector);
270 	struct drm_bridge *bridge;
276 	bridge = bridge_connector->bridge_edid;
277 	if (bridge)
278 		return drm_bridge_connector_get_modes_edid(connector, bridge);
284 	bridge = bridge_connector->bridge_modes;
285 	if (bridge)
286 		return bridge->funcs->get_modes(bridge, connector);
310  * @encoder: the encoder where the bridge chain starts
314  * the @encoder. All bridges in the chain shall report bridge operation flags
315  * (&drm_bridge->ops) and bridge output type (&drm_bridge->type), and none of
327 	struct drm_bridge *bridge, *panel_bridge = NULL;
352 	drm_for_each_bridge_in_chain(encoder, bridge) {
353 		if (!bridge->interlace_allowed)
356 		if (bridge->ops & DRM_BRIDGE_OP_EDID)
357 			bridge_connector->bridge_edid = bridge;
358 		if (bridge->ops & DRM_BRIDGE_OP_HPD)
359 			bridge_connector->bridge_hpd = bridge;
360 		if (bridge->ops & DRM_BRIDGE_OP_DETECT)
361 			bridge_connector->bridge_detect = bridge;
362 		if (bridge->ops & DRM_BRIDGE_OP_MODES)
363 			bridge_connector->bridge_modes = bridge;
365 		if (!drm_bridge_get_next_bridge(bridge))
366 			connector_type = bridge->type;
369 		if (!drm_bridge_get_next_bridge(bridge) &&
370 		    bridge->of_node)
371 			connector->fwnode = fwnode_handle_get(of_fwnode_handle(bridge->of_node));
374 		if (bridge->ddc)
375 			ddc = bridge->ddc;
377 		if (drm_bridge_is_panel(bridge))
378 			panel_bridge = bridge;