gpu/drm/drm_bridge.c

47  * either connected to it directly, or through a chain of bridges::
53  * Chaining multiple bridges to the output of a bridge, or the same bridge to
54  * the output of different bridges, is not supported.
70  * Bridges are responsible for linking themselves with the next bridge in the
74  * Once these links are created, the bridges can participate along with encoder
82  * bridges in the chain.
94  * Bridges also participate in implementing the &drm_connector at the end of
104  * The interaction between the bridges and other frameworks involved in
161  * DSI host interfaces are expected to be implemented as bridges rather than
294  * Note that bridges attached to encoders are auto-detached during encoder
393  * - The encoder-related operations support control of the bridges in the
414  *   negotiate the formats transmitted between bridges in the chain when
423  *   based on a chain of bridges. DRM bridges traditionally create a
424  *   &drm_connector for bridges meant to be used at the end of the chain. This
425  *   puts additional burden on bridge drivers, especially for bridges that may
431  *   flexible, a new model allows bridges to unconditionally skip creation of
438  *   each chain of bridges, and implement those connector instances based on
465  *   connector creation. For intermediate bridges in the chain, the flag shall
475  * drm_bridge_chain_mode_fixup - fixup proposed mode for all bridges in the
481  * Calls &drm_bridge_funcs.mode_fixup for all the bridges in the
512  * drm_bridge_chain_mode_valid - validate the mode against all bridges in the
518  * Calls &drm_bridge_funcs.mode_valid for all the bridges in the encoder
554  * drm_bridge_chain_mode_set - set proposed mode for all bridges in the
560  * Calls &drm_bridge_funcs.mode_set op for all the bridges in the
583  * drm_atomic_bridge_chain_disable - disables all bridges in the encoder chain
588  * &drm_bridge_funcs.disable) op for all the bridges in the encoder chain,
645  * drm_atomic_bridge_chain_post_disable - cleans up after disabling all bridges
651  * &drm_bridge_funcs.post_disable) op for all the bridges in the encoder chain,
696 				/* Call these bridges in reverse order */  in drm_atomic_bridge_chain_post_disable()
711 			/* Jump all bridges that we have already post_disabled */  in drm_atomic_bridge_chain_post_disable()
736  * drm_atomic_bridge_chain_pre_enable - prepares for enabling all bridges in
742  * &drm_bridge_funcs.pre_enable) op for all the bridges in the encoder chain,
787 					 * bridges called first.  in drm_atomic_bridge_chain_pre_enable()
798 			/* Jump all bridges that we have already pre_enabled */  in drm_atomic_bridge_chain_pre_enable()
808  * drm_atomic_bridge_chain_enable - enables all bridges in the encoder chain
813  * &drm_bridge_funcs.enable) op for all the bridges in the encoder chain,
1098 	 * not necessarily what all bridges want, but that's what most of them  in drm_atomic_bridge_propagate_bus_flags()
1113  * &drm_bridge_funcs.mode_fixup()) op for all the bridges in the encoder chain,
1145 		 * that preceding bridges in the chain can propagate the new  in drm_atomic_bridge_chain_check()