[mirror_ubuntu-focal-kernel.git] / include / drm / drm_of.h

/* 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;

#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__ */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
7e435aad RK	2	#ifndef __DRM_OF_H__
	3	#define __DRM_OF_H__
	4
4cacf91f	5	#include <linux/of_graph.h>
512721a1 ML	6	#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE)
	7	#include <drm/drm_bridge.h>
	8	#endif
4cacf91f	9
df785aa8	10	struct component_master_ops;
97ac0e47	11	struct component_match;
df785aa8	12	struct device;
7e435aad	13	struct drm_device;
4cacf91f	14	struct drm_encoder;
1f2db303 RH	15	struct drm_panel;
1f2db303 RH	16	struct drm_bridge;
7e435aad RK	17	struct device_node;
	18
	19	#ifdef CONFIG_OF
8b5f7a62 JS	20	uint32_t drm_of_crtc_port_mask(struct drm_device *dev,
8b5f7a62 JS	21	struct device_node *port);
91faa047 DV	22	uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
	23	struct device_node *port);
	24	void drm_of_component_match_add(struct device *master,
	25	struct component_match **matchptr,
	26	int (compare)(struct device , void *),
	27	struct device_node *node);
	28	int drm_of_component_probe(struct device *dev,
	29	int (compare_of)(struct device , void *),
	30	const struct component_master_ops *m_ops);
	31	int drm_of_encoder_active_endpoint(struct device_node *node,
	32	struct drm_encoder *encoder,
	33	struct of_endpoint *endpoint);
1f2db303 RH	34	int drm_of_find_panel_or_bridge(const struct device_node *np,
	35	int port, int endpoint,
	36	struct drm_panel **panel,
	37	struct drm_bridge **bridge);
7e435aad	38	#else
8b5f7a62 JS	39	static inline uint32_t drm_of_crtc_port_mask(struct drm_device *dev,
	40	struct device_node *port)
	41	{
	42	return 0;
	43	}
	44
7e435aad RK	45	static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
	46	struct device_node *port)
	47	{
	48	return 0;
	49	}
df785aa8	50
329f4c81 AB	51	static inline void
	52	drm_of_component_match_add(struct device *master,
	53	struct component_match **matchptr,
	54	int (compare)(struct device , void *),
	55	struct device_node *node)
97ac0e47 RK	56	{
	57	}
	58
df785aa8 LD	59	static inline int
	60	drm_of_component_probe(struct device *dev,
	61	int (compare_of)(struct device , void *),
	62	const struct component_master_ops *m_ops)
	63	{
	64	return -EINVAL;
	65	}
4cacf91f PZ	66
	67	static inline int drm_of_encoder_active_endpoint(struct device_node *node,
	68	struct drm_encoder *encoder,
	69	struct of_endpoint *endpoint)
	70	{
	71	return -EINVAL;
	72	}
1f2db303 RH	73	static inline int drm_of_find_panel_or_bridge(const struct device_node *np,
	74	int port, int endpoint,
	75	struct drm_panel **panel,
	76	struct drm_bridge **bridge)
	77	{
	78	return -EINVAL;
	79	}
7e435aad RK	80	#endif
7e435aad RK	81
512721a1 ML	82	/*
	83	* drm_of_panel_bridge_remove - remove panel bridge
	84	* @np: device tree node containing panel bridge output ports
	85	*
	86	* Remove the panel bridge of a given DT node's port and endpoint number
	87	*
	88	* Returns zero if successful, or one of the standard error codes if it fails.
	89	*/
c70087e8	90	static inline int drm_of_panel_bridge_remove(const struct device_node *np,
	91	int port, int endpoint)
	92	{
512721a1 ML	93	#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE)
	94	struct drm_bridge *bridge;
	95	struct device_node *remote;
	96
	97	remote = of_graph_get_remote_node(np, port, endpoint);
	98	if (!remote)
	99	return -ENODEV;
	100
	101	bridge = of_drm_find_bridge(remote);
	102	drm_panel_bridge_remove(bridge);
	103
	104	return 0;
	105	#else
c70087e8	106	return -EINVAL;
7e435aad	107	#endif
512721a1	108	}
7e435aad	109
4cacf91f PZ	110	static inline int drm_of_encoder_active_endpoint_id(struct device_node *node,
	111	struct drm_encoder *encoder)
	112	{
	113	struct of_endpoint endpoint;
	114	int ret = drm_of_encoder_active_endpoint(node, encoder,
	115	&endpoint);
	116
	117	return ret ?: endpoint.id;
	118	}
	119
	120	static inline int drm_of_encoder_active_port_id(struct device_node *node,
	121	struct drm_encoder *encoder)
	122	{
	123	struct of_endpoint endpoint;
	124	int ret = drm_of_encoder_active_endpoint(node, encoder,
	125	&endpoint);
	126
	127	return ret ?: endpoint.port;
	128	}
	129
7e435aad	130	#endif /* __DRM_OF_H__ */