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/* SPDX-License-Identifier: GPL-2.0 */
#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;
/**
* 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_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);
int drm_of_lvds_get_dual_link_pixel_order(const struct device_node *port1,
const 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);
#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;
}
static inline int
drm_of_lvds_get_dual_link_pixel_order(const struct device_node *port1,
const struct device_node *port2)
{
return -EINVAL;
}
static inline int
drm_of_lvds_get_data_mapping(const struct device_node *port)
{
return -EINVAL;
}
static inline int
drm_of_get_data_lanes_count(const struct device_node *endpoint,
const unsigned int min, const unsigned int max)
{
return -EINVAL;
}
static inline 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)
{
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__ */
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