/* SPDX-License-Identifier: GPL-2.0 */#ifndef __DRM_OF_H__#define __DRM_OF_H__ #include <linux/err.h>#include <linux/of_graph.h>#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE)#include <linux/of.h>#include <drm/drm_bridge.h>#endif struct component_master_ops;struct component_match;struct device;struct drm_device;struct drm_encoder;struct drm_panel;struct drm_bridge;struct device_node;struct mipi_dsi_device_info;struct mipi_dsi_host; enum drm_panel_orientation; /** * enum drm_lvds_dual_link_pixels - Pixel order of an LVDS dual-link connection * @DRM_LVDS_DUAL_LINK_EVEN_ODD_PIXELS: Even pixels are expected to be generated *    from the first port, odd pixels from the second port * @DRM_LVDS_DUAL_LINK_ODD_EVEN_PIXELS: Odd pixels are expected to be generated *    from the first port, even pixels from the second port */enum drm_lvds_dual_link_pixels {	DRM_LVDS_DUAL_LINK_EVEN_ODD_PIXELS = 0,	DRM_LVDS_DUAL_LINK_ODD_EVEN_PIXELS = 1,}; #ifdef CONFIG_OFuint32_t drm_of_crtc_port_mask(struct drm_device *dev,			    struct device_node *port);uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,				    struct device_node *port);void drm_of_component_match_add(struct device *master,				struct component_match **matchptr,				int (*compare)(struct device *, void *),				struct device_node *node);int drm_of_component_probe(struct device *dev,			   int (*compare_of)(struct device *, void *),			   const struct component_master_ops *m_ops);int drm_of_encoder_active_endpoint(struct device_node *node,				   struct drm_encoder *encoder,				   struct of_endpoint *endpoint);int drm_of_get_panel_orientation(const struct device_node *np,				 enum drm_panel_orientation *orientation);int drm_of_find_panel_or_bridge(const struct device_node *np,				int port, int endpoint,				struct drm_panel **panel,				struct drm_bridge **bridge);int drm_of_lvds_get_dual_link_pixel_order(const struct device_node *port1,					  const struct device_node *port2);int drm_of_lvds_get_dual_link_pixel_order_sink(struct device_node *port1,					       struct device_node *port2);int drm_of_lvds_get_data_mapping(const struct device_node *port);int drm_of_get_data_lanes_count(const struct device_node *endpoint,				const unsigned int min, const unsigned int max);int drm_of_get_data_lanes_count_ep(const struct device_node *port,				   int port_reg, int reg,				   const unsigned int min,				   const unsigned int max);int drm_of_get_data_lanes_count_remote(const struct device_node *port,				       int port_reg, int reg,				       const unsigned int min,				       const unsigned int max);#elsestatic inline uint32_t drm_of_crtc_port_mask(struct drm_device *dev,					  struct device_node *port){	return 0;} static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,						  struct device_node *port){	return 0;} static inline voiddrm_of_component_match_add(struct device *master,			   struct component_match **matchptr,			   int (*compare)(struct device *, void *),			   struct device_node *node){} static inline intdrm_of_component_probe(struct device *dev,		       int (*compare_of)(struct device *, void *),		       const struct component_master_ops *m_ops){	return -EINVAL;} static inline int drm_of_encoder_active_endpoint(struct device_node *node,						 struct drm_encoder *encoder,						 struct of_endpoint *endpoint){	return -EINVAL;} static inline int drm_of_get_panel_orientation(const struct device_node *np,					       enum drm_panel_orientation *orientation){	return -EINVAL;} static inline int drm_of_find_panel_or_bridge(const struct device_node *np,					      int port, int endpoint,					      struct drm_panel **panel,					      struct drm_bridge **bridge){	return -EINVAL;} static inline intdrm_of_lvds_get_dual_link_pixel_order(const struct device_node *port1,				      const struct device_node *port2){	return -EINVAL;} static inline intdrm_of_lvds_get_dual_link_pixel_order_sink(struct device_node *port1,					   struct device_node *port2){	return -EINVAL;} static inline intdrm_of_lvds_get_data_mapping(const struct device_node *port){	return -EINVAL;} static inline intdrm_of_get_data_lanes_count(const struct device_node *endpoint,			    const unsigned int min, const unsigned int max){	return -EINVAL;} static inline intdrm_of_get_data_lanes_count_ep(const struct device_node *port,			       int port_reg, int reg,			       const unsigned int min,			       const unsigned int max){	return -EINVAL;} static inline intdrm_of_get_data_lanes_count_remote(const struct device_node *port,				   int port_reg, int reg,				   const unsigned int min,				   const unsigned int max){	return -EINVAL;}#endif #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_MIPI_DSI)struct mipi_dsi_host *drm_of_get_dsi_bus(struct device *dev);#elsestatic inline structmipi_dsi_host *drm_of_get_dsi_bus(struct device *dev){	return ERR_PTR(-EINVAL);}#endif /* CONFIG_OF && CONFIG_DRM_MIPI_DSI */ /* * drm_of_panel_bridge_remove - remove panel bridge * @np: device tree node containing panel bridge output ports * * Remove the panel bridge of a given DT node's port and endpoint number * * Returns zero if successful, or one of the standard error codes if it fails. */static inline int drm_of_panel_bridge_remove(const struct device_node *np,					     int port, int endpoint){#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE)	struct drm_bridge *bridge;	struct device_node *remote; 	remote = of_graph_get_remote_node(np, port, endpoint);	if (!remote)		return -ENODEV; 	bridge = of_drm_find_and_get_bridge(remote);	drm_panel_bridge_remove(bridge); 	drm_bridge_put(bridge);	of_node_put(remote); 	return 0;#else	return -EINVAL;#endif} static inline int drm_of_encoder_active_endpoint_id(struct device_node *node,						    struct drm_encoder *encoder){	struct of_endpoint endpoint;	int ret = drm_of_encoder_active_endpoint(node, encoder,						 &endpoint); 	return ret ?: endpoint.id;} static inline int drm_of_encoder_active_port_id(struct device_node *node,						struct drm_encoder *encoder){	struct of_endpoint endpoint;	int ret = drm_of_encoder_active_endpoint(node, encoder,						 &endpoint); 	return ret ?: endpoint.port;} #endif /* __DRM_OF_H__ */