gpu/drm/drm_bridge.c

48  * either connected to it directly, or through a chain of bridges::
54  * Chaining multiple bridges to the output of a bridge, or the same bridge to
55  * the output of different bridges, is not supported.
71  * Bridges are responsible for linking themselves with the next bridge in the
75  * Once these links are created, the bridges can participate along with encoder
83  * bridges in the chain.
95  * Bridges also participate in implementing the &drm_connector at the end of
105  * The interaction between the bridges and other frameworks involved in
162  * DSI host interfaces are expected to be implemented as bridges rather than
295  * Note that bridges attached to encoders are auto-detached during encoder
394  * - The encoder-related operations support control of the bridges in the
415  *   negotiate the formats transmitted between bridges in the chain when
424  *   based on a chain of bridges. DRM bridges traditionally create a
425  *   &drm_connector for bridges meant to be used at the end of the chain. This
426  *   puts additional burden on bridge drivers, especially for bridges that may
432  *   flexible, a new model allows bridges to unconditionally skip creation of
439  *   each chain of bridges, and implement those connector instances based on
466  *   connector creation. For intermediate bridges in the chain, the flag shall
476  * drm_bridge_chain_mode_valid - validate the mode against all bridges in the
482  * Calls &drm_bridge_funcs.mode_valid for all the bridges in the encoder
518  * drm_bridge_chain_mode_set - set proposed mode for all bridges in the
524  * Calls &drm_bridge_funcs.mode_set op for all the bridges in the
547  * drm_atomic_bridge_chain_disable - disables all bridges in the encoder chain
552  * &drm_bridge_funcs.disable) op for all the bridges in the encoder chain,
609  * drm_atomic_bridge_chain_post_disable - cleans up after disabling all bridges
615  * &drm_bridge_funcs.post_disable) op for all the bridges in the encoder chain,
673 				/* Call these bridges in reverse order */  in drm_atomic_bridge_chain_post_disable()
688 			/* Jump all bridges that we have already post_disabled */  in drm_atomic_bridge_chain_post_disable()
713  * drm_atomic_bridge_chain_pre_enable - prepares for enabling all bridges in
719  * &drm_bridge_funcs.pre_enable) op for all the bridges in the encoder chain,
771 					 * bridges called first.  in drm_atomic_bridge_chain_pre_enable()
782 			/* Jump all bridges that we have already pre_enabled */  in drm_atomic_bridge_chain_pre_enable()
792  * drm_atomic_bridge_chain_enable - enables all bridges in the encoder chain
797  * &drm_bridge_funcs.enable) op for all the bridges in the encoder chain,
1082 	 * not necessarily what all bridges want, but that's what most of them  in drm_atomic_bridge_propagate_bus_flags()
1097  * &drm_bridge_funcs.mode_fixup()) op for all the bridges in the encoder chain,
1129 		 * that preceding bridges in the chain can propagate the new  in drm_atomic_bridge_chain_check()