#ifndef __DRM_OF_H__
#define __DRM_OF_H__

#include <linux/of_graph.h>
#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE)
#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;

#ifdef CONFIG_OF
uint32_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_find_panel_or_bridge(const struct device_node *np,
                                int port, int endpoint,
                                struct drm_panel **panel,
                                struct drm_bridge **bridge);
#else
static 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 void
drm_of_component_match_add(struct device *master,
                           struct component_match **matchptr,
                           int (*compare)(struct device *, void *),
                           struct device_node *node)
{
}

static inline int
drm_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_find_panel_or_bridge(const struct device_node *np,
                                              int port, int endpoint,
                                              struct drm_panel **panel,
                                              struct drm_bridge **bridge)
{
        return -EINVAL;
}
#endif

/*
 * 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_bridge(remote);
        drm_panel_bridge_remove(bridge);

        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__ */