diff options
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_bridge.h | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 46e15526b087..ae0595c70132 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -36,38 +36,6 @@ struct drm_bridge_timings; struct drm_panel; /** - * struct drm_bus_cfg - bus configuration - * - * This structure stores the configuration of a physical bus between two - * components in an output pipeline, usually between two bridges, an encoder - * and a bridge, or a bridge and a connector. - * - * The bus configuration is stored in &drm_bridge_state separately for the - * input and output buses, as seen from the point of view of each bridge. The - * bus configuration of a bridge output is usually identical to the - * configuration of the next bridge's input, but may differ if the signals are - * modified between the two bridges, for instance by an inverter on the board. - * The input and output configurations of a bridge may differ if the bridge - * modifies the signals internally, for instance by performing format - * conversion, or modifying signals polarities. - */ -struct drm_bus_cfg { - /** - * @format: format used on this bus (one of the MEDIA_BUS_FMT_* format) - * - * This field should not be directly modified by drivers - * (&drm_atomic_bridge_chain_select_bus_fmts() takes care of the bus - * format negotiation). - */ - u32 format; - - /** - * @flags: DRM_BUS_* flags used on this bus - */ - u32 flags; -}; - -/** * struct drm_bridge_state - Atomic bridge state object * @base: inherit from &drm_private_state * @bridge: the bridge this state refers to @@ -76,16 +44,6 @@ struct drm_bridge_state { struct drm_private_state base; struct drm_bridge *bridge; - - /** - * @input_bus_cfg: input bus configuration - */ - struct drm_bus_cfg input_bus_cfg; - - /** - * @output_bus_cfg: input bus configuration - */ - struct drm_bus_cfg output_bus_cfg; }; static inline struct drm_bridge_state * @@ -430,72 +388,6 @@ struct drm_bridge_funcs { struct drm_bridge_state *state); /** - * @atomic_get_output_bus_fmts: - * - * Return the supported bus formats on the output end of a bridge. - * The returned array must be allocated with kmalloc() and will be - * freed by the caller. If the allocation fails, NULL should be - * returned. num_output_fmts must be set to the returned array size. - * Formats listed in the returned array should be listed in decreasing - * preference order (the core will try all formats until it finds one - * that works). - * - * This method is only called on the last element of the bridge chain - * as part of the bus format negotiation process that happens in - * &drm_atomic_bridge_chain_select_bus_fmts(). - * This method is optional. When not implemented, the core will - * fall back to &drm_connector.display_info.bus_formats[0] if - * &drm_connector.display_info.num_bus_formats > 0, - * or to MEDIA_BUS_FMT_FIXED otherwise. - */ - u32 *(*atomic_get_output_bus_fmts)(struct drm_bridge *bridge, - struct drm_bridge_state *bridge_state, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state, - unsigned int *num_output_fmts); - - /** - * @atomic_get_input_bus_fmts: - * - * Return the supported bus formats on the input end of a bridge for - * a specific output bus format. - * - * The returned array must be allocated with kmalloc() and will be - * freed by the caller. If the allocation fails, NULL should be - * returned. num_output_fmts must be set to the returned array size. - * Formats listed in the returned array should be listed in decreasing - * preference order (the core will try all formats until it finds one - * that works). When the format is not supported NULL should be - * returned and *num_output_fmts should be set to 0. - * - * This method is called on all elements of the bridge chain as part of - * the bus format negotiation process that happens in - * &drm_atomic_bridge_chain_select_bus_fmts(). - * This method is optional. When not implemented, the core will bypass - * bus format negotiation on this element of the bridge without - * failing, and the previous element in the chain will be passed - * MEDIA_BUS_FMT_FIXED as its output bus format. - * - * Bridge drivers that need to support being linked to bridges that are - * not supporting bus format negotiation should handle the - * output_fmt == MEDIA_BUS_FMT_FIXED case appropriately, by selecting a - * sensible default value or extracting this information from somewhere - * else (FW property, &drm_display_mode, &drm_display_info, ...) - * - * Note: Even if input format selection on the first bridge has no - * impact on the negotiation process (bus format negotiation stops once - * we reach the first element of the chain), drivers are expected to - * return accurate input formats as the input format may be used to - * configure the CRTC output appropriately. - */ - u32 *(*atomic_get_input_bus_fmts)(struct drm_bridge *bridge, - struct drm_bridge_state *bridge_state, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state, - u32 output_fmt, - unsigned int *num_input_fmts); - - /** * @atomic_check: * * This method is responsible for checking bridge state correctness. @@ -509,14 +401,6 @@ struct drm_bridge_funcs { * called when &drm_bridge_funcs.atomic_check() is implemented, so only * one of them should be provided. * - * If drivers need to tweak &drm_bridge_state.input_bus_cfg.flags or - * &drm_bridge_state.output_bus_cfg.flags it should should happen in - * this function. By default the &drm_bridge_state.output_bus_cfg.flags - * field is set to the next bridge - * &drm_bridge_state.input_bus_cfg.flags value or - * &drm_connector.display_info.bus_flags if the bridge is the last - * element in the chain. - * * RETURNS: * zero if the check passed, a negative error code otherwise. */ @@ -704,14 +588,6 @@ void drm_atomic_bridge_chain_pre_enable(struct drm_bridge *bridge, void drm_atomic_bridge_chain_enable(struct drm_bridge *bridge, struct drm_atomic_state *state); -u32 * -drm_atomic_helper_bridge_propagate_bus_fmt(struct drm_bridge *bridge, - struct drm_bridge_state *bridge_state, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state, - u32 output_fmt, - unsigned int *num_input_fmts); - void __drm_atomic_helper_bridge_reset(struct drm_bridge *bridge, struct drm_bridge_state *state); void __drm_atomic_helper_bridge_duplicate_state(struct drm_bridge *bridge, |