gpu/drm/drm_bridge.c

42  * either connected to it directly, or through a chain of bridges::
48  * Chaining multiple bridges to the output of a bridge, or the same bridge to
49  * the output of different bridges, is not supported.
58  * Bridges are responsible for linking themselves with the next bridge in the
62  * Once these links are created, the bridges can participate along with encoder
70  * bridges in the chain.
82  * Bridges also participate in implementing the &drm_connector at the end of
168  * Note that bridges attached to encoders are auto-detached during encoder
258  * - The encoder-related operations support control of the bridges in the
279  *   negotiate the formats transmitted between bridges in the chain when
288  *   based on a chain of bridges. DRM bridges traditionally create a
289  *   &drm_connector for bridges meant to be used at the end of the chain. This
290  *   puts additional burden on bridge drivers, especially for bridges that may
296  *   flexible, a new model allows bridges to unconditionally skip creation of
303  *   each chain of bridges, and implement those connector instances based on
330  *   connector creation. For intermediate bridges in the chain, the flag shall
340  * drm_bridge_chain_mode_fixup - fixup proposed mode for all bridges in the
346  * Calls &drm_bridge_funcs.mode_fixup for all the bridges in the
377  * drm_bridge_chain_mode_valid - validate the mode against all bridges in the
383  * Calls &drm_bridge_funcs.mode_valid for all the bridges in the encoder
419  * drm_bridge_chain_disable - disables all bridges in the encoder chain
422  * Calls &drm_bridge_funcs.disable op for all the bridges in the encoder
448  * drm_bridge_chain_post_disable - cleans up after disabling all bridges in the
452  * Calls &drm_bridge_funcs.post_disable op for all the bridges in the
474  * drm_bridge_chain_mode_set - set proposed mode for all bridges in the
480  * Calls &drm_bridge_funcs.mode_set op for all the bridges in the
503  * drm_bridge_chain_pre_enable - prepares for enabling all bridges in the
507  * Calls &drm_bridge_funcs.pre_enable op for all the bridges in the encoder
530  * drm_bridge_chain_enable - enables all bridges in the encoder chain
533  * Calls &drm_bridge_funcs.enable op for all the bridges in the encoder
555  * drm_atomic_bridge_chain_disable - disables all bridges in the encoder chain
560  * &drm_bridge_funcs.disable) op for all the bridges in the encoder chain,
598  * drm_atomic_bridge_chain_post_disable - cleans up after disabling all bridges
604  * &drm_bridge_funcs.post_disable) op for all the bridges in the encoder chain,
639  * drm_atomic_bridge_chain_pre_enable - prepares for enabling all bridges in
645  * &drm_bridge_funcs.pre_enable) op for all the bridges in the encoder chain,
683  * drm_atomic_bridge_chain_enable - enables all bridges in the encoder chain
688  * &drm_bridge_funcs.enable) op for all the bridges in the encoder chain,
973 	 * not necessarily what all bridges want, but that's what most of them  in drm_atomic_bridge_propagate_bus_flags()
988  * &drm_bridge_funcs.mode_fixup()) op for all the bridges in the encoder chain,
1020 		 * that preceding bridges in the chain can propagate the new  in drm_atomic_bridge_chain_check()