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/*
* vsp1_histo.h -- R-Car VSP1 Histogram API
*
* Copyright (C) 2016 Renesas Electronics Corporation
* Copyright (C) 2016 Laurent Pinchart
*
* 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_HISTO_H__
#define __VSP1_HISTO_H__
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <media/media-entity.h>
#include <media/v4l2-dev.h>
#include <media/videobuf2-v4l2.h>
#include "vsp1_entity.h"
struct vsp1_device;
#define HISTO_PAD_SINK 0
#define HISTO_PAD_SOURCE 1
struct vsp1_histogram_buffer {
struct vb2_v4l2_buffer buf;
struct list_head queue;
void *addr;
};
struct vsp1_histogram {
struct vsp1_entity entity;
struct video_device video;
struct media_pad pad;
const u32 *formats;
unsigned int num_formats;
size_t data_size;
u32 meta_format;
struct mutex lock;
struct vb2_queue queue;
spinlock_t irqlock;
struct list_head irqqueue;
wait_queue_head_t wait_queue;
bool readout;
};
static inline struct vsp1_histogram *vdev_to_histo(struct video_device *vdev)
{
return container_of(vdev, struct vsp1_histogram, video);
}
static inline struct vsp1_histogram *subdev_to_histo(struct v4l2_subdev *subdev)
{
return container_of(subdev, struct vsp1_histogram, entity.subdev);
}
int vsp1_histogram_init(struct vsp1_device *vsp1, struct vsp1_histogram *histo,
enum vsp1_entity_type type, const char *name,
const struct vsp1_entity_operations *ops,
const unsigned int *formats, unsigned int num_formats,
size_t data_size, u32 meta_format);
void vsp1_histogram_destroy(struct vsp1_entity *entity);
struct vsp1_histogram_buffer *
vsp1_histogram_buffer_get(struct vsp1_histogram *histo);
void vsp1_histogram_buffer_complete(struct vsp1_histogram *histo,
struct vsp1_histogram_buffer *buf,
size_t size);
#endif /* __VSP1_HISTO_H__ */
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