linux/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Broadcom BCM2835 V4L2 driver
 *
 * Copyright © 2013 Raspberry Pi (Trading) Ltd.
 *
 * Authors: Vincent Sanders @ Collabora
 *          Dave Stevenson @ Broadcom
 *		(now [email protected])
 *          Simon Mellor @ Broadcom
 *          Luke Diamand @ Broadcom
 *
 * MMAL interface to VCHIQ message passing
 */

#ifndef MMAL_VCHIQ_H
#define MMAL_VCHIQ_H

#include "mmal-common.h"
#include "mmal-msg-format.h"

#define MAX_PORT_COUNT …

/* Maximum size of the format extradata. */
#define MMAL_FORMAT_EXTRADATA_MAX_SIZE …

struct vchiq_mmal_instance;
struct device;

enum vchiq_mmal_es_type { … };

struct vchiq_mmal_port_buffer { … };

struct vchiq_mmal_port;

vchiq_mmal_buffer_cb;

struct vchiq_mmal_port { … };

struct vchiq_mmal_component { … };

int vchiq_mmal_init(struct device *dev, struct vchiq_mmal_instance **out_instance);
int vchiq_mmal_finalise(struct vchiq_mmal_instance *instance);

/* Initialise a mmal component and its ports
 *
 */
int vchiq_mmal_component_init(struct vchiq_mmal_instance *instance,
			      const char *name, struct vchiq_mmal_component **component_out);

int vchiq_mmal_component_finalise(struct vchiq_mmal_instance *instance,
				  struct vchiq_mmal_component *component);

int vchiq_mmal_component_enable(struct vchiq_mmal_instance *instance,
				struct vchiq_mmal_component *component);

int vchiq_mmal_component_disable(struct vchiq_mmal_instance *instance,
				 struct vchiq_mmal_component *component);

/* enable a mmal port
 *
 * enables a port and if a buffer callback provided enque buffer
 * headers as appropriate for the port.
 */
int vchiq_mmal_port_enable(struct vchiq_mmal_instance *instance,
			   struct vchiq_mmal_port *port,
		vchiq_mmal_buffer_cb buffer_cb);

/* disable a port
 *
 * disable a port will dequeue any pending buffers
 */
int vchiq_mmal_port_disable(struct vchiq_mmal_instance *instance,
			    struct vchiq_mmal_port *port);

int vchiq_mmal_port_parameter_set(struct vchiq_mmal_instance *instance,
				  struct vchiq_mmal_port *port,
				  u32 parameter,
				  void *value,
				  u32 value_size);

int vchiq_mmal_port_parameter_get(struct vchiq_mmal_instance *instance,
				  struct vchiq_mmal_port *port,
				  u32 parameter,
				  void *value,
				  u32 *value_size);

int vchiq_mmal_port_set_format(struct vchiq_mmal_instance *instance,
			       struct vchiq_mmal_port *port);

int vchiq_mmal_port_connect_tunnel(struct vchiq_mmal_instance *instance,
				   struct vchiq_mmal_port *src,
				   struct vchiq_mmal_port *dst);

int vchiq_mmal_version(struct vchiq_mmal_instance *instance,
		       u32 *major_out,
		       u32 *minor_out);

int vchiq_mmal_submit_buffer(struct vchiq_mmal_instance *instance,
			     struct vchiq_mmal_port *port,
			     struct mmal_buffer *buf);

int mmal_vchi_buffer_init(struct vchiq_mmal_instance *instance,
			  struct mmal_buffer *buf);
int mmal_vchi_buffer_cleanup(struct mmal_buffer *buf);
#endif /* MMAL_VCHIQ_H */