cregit-Linux how code gets into the kernel

Release 4.7 drivers/media/platform/vsp1/vsp1_entity.h

/*
 * vsp1_entity.h  --  R-Car VSP1 Base Entity
 *
 * Copyright (C) 2013-2014 Renesas Electronics Corporation
 *
 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */
#ifndef __VSP1_ENTITY_H__

#define __VSP1_ENTITY_H__

#include <linux/list.h>
#include <linux/spinlock.h>

#include <media/v4l2-subdev.h>

struct vsp1_device;
struct vsp1_dl_list;
struct vsp1_pipeline;


enum vsp1_entity_type {
	
VSP1_ENTITY_BRU,
	
VSP1_ENTITY_HSI,
	
VSP1_ENTITY_HST,
	
VSP1_ENTITY_LIF,
	
VSP1_ENTITY_LUT,
	
VSP1_ENTITY_RPF,
	
VSP1_ENTITY_SRU,
	
VSP1_ENTITY_UDS,
	
VSP1_ENTITY_WPF,
};


#define VSP1_ENTITY_MAX_INPUTS		5	
/* For the BRU */

/*
 * struct vsp1_route - Entity routing configuration
 * @type: Entity type this routing entry is associated with
 * @index: Entity index this routing entry is associated with
 * @reg: Output routing configuration register
 * @inputs: Target node value for each input
 *
 * Each $vsp1_route entry describes routing configuration for the entity
 * specified by the entry's @type and @index. @reg indicates the register that
 * holds output routing configuration for the entity, and the @inputs array
 * store the target node value for each input of the entity.
 */

struct vsp1_route {
	
enum vsp1_entity_type type;
	
unsigned int index;
	
unsigned int reg;
	
unsigned int inputs[VSP1_ENTITY_MAX_INPUTS];
};

/**
 * struct vsp1_entity_operations - Entity operations
 * @destroy:    Destroy the entity.
 * @set_memory: Setup memory buffer access. This operation applies the settings
 *              stored in the rwpf mem field to the display list. Valid for RPF
 *              and WPF only.
 * @configure:  Setup the hardware based on the entity state (pipeline, formats,
 *              selection rectangles, ...)
 */

struct vsp1_entity_operations {
	
void (*destroy)(struct vsp1_entity *);
	
void (*set_memory)(struct vsp1_entity *, struct vsp1_dl_list *dl);
	
void (*configure)(struct vsp1_entity *, struct vsp1_pipeline *,
			  struct vsp1_dl_list *);
};


struct vsp1_entity {
	
struct vsp1_device *vsp1;

	
const struct vsp1_entity_operations *ops;

	
enum vsp1_entity_type type;
	
unsigned int index;
	
const struct vsp1_route *route;

	
struct list_head list_dev;
	
struct list_head list_pipe;

	
struct media_pad *pads;
	
unsigned int source_pad;

	
struct media_entity *sink;
	
unsigned int sink_pad;

	
struct v4l2_subdev subdev;
	
struct v4l2_subdev_pad_config *config;
};


static inline struct vsp1_entity *to_vsp1_entity(struct v4l2_subdev *subdev) { return container_of(subdev, struct vsp1_entity, subdev); }

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int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity, const char *name, unsigned int num_pads, const struct v4l2_subdev_ops *ops); void vsp1_entity_destroy(struct vsp1_entity *entity); extern const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops; int vsp1_entity_link_setup(struct media_entity *entity, const struct media_pad *local, const struct media_pad *remote, u32 flags); struct v4l2_subdev_pad_config * vsp1_entity_get_pad_config(struct vsp1_entity *entity, struct v4l2_subdev_pad_config *cfg, enum v4l2_subdev_format_whence which); struct v4l2_mbus_framefmt * vsp1_entity_get_pad_format(struct vsp1_entity *entity, struct v4l2_subdev_pad_config *cfg, unsigned int pad); struct v4l2_rect * vsp1_entity_get_pad_compose(struct vsp1_entity *entity, struct v4l2_subdev_pad_config *cfg, unsigned int pad); int vsp1_entity_init_cfg(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg); void vsp1_entity_route_setup(struct vsp1_entity *source, struct vsp1_dl_list *dl); int vsp1_subdev_get_pad_format(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt); int vsp1_subdev_enum_mbus_code(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code, const unsigned int *codes, unsigned int ncodes); int vsp1_subdev_enum_frame_size(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_size_enum *fse, unsigned int min_w, unsigned int min_h, unsigned int max_w, unsigned int max_h); #endif /* __VSP1_ENTITY_H__ */

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