/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* vsp1_histo.h -- R-Car VSP1 Histogram API
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*
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* Copyright (C) 2016 Renesas Electronics Corporation
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* Copyright (C) 2016 Laurent Pinchart
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*/
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#ifndef __VSP1_HISTO_H__
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#define __VSP1_HISTO_H__
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include <linux/spinlock.h>
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#include <media/media-entity.h>
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#include <media/v4l2-dev.h>
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#include <media/videobuf2-v4l2.h>
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#include "vsp1_entity.h"
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struct vsp1_device;
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#define HISTO_PAD_SINK 0
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#define HISTO_PAD_SOURCE 1
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struct vsp1_histogram_buffer {
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struct vb2_v4l2_buffer buf;
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struct list_head queue;
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void *addr;
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};
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struct vsp1_histogram {
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struct vsp1_entity entity;
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struct video_device video;
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struct media_pad pad;
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const u32 *formats;
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unsigned int num_formats;
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size_t data_size;
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u32 meta_format;
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struct mutex lock;
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struct vb2_queue queue;
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spinlock_t irqlock;
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struct list_head irqqueue;
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wait_queue_head_t wait_queue;
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bool readout;
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};
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static inline struct vsp1_histogram *vdev_to_histo(struct video_device *vdev)
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{
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return container_of(vdev, struct vsp1_histogram, video);
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}
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static inline struct vsp1_histogram *subdev_to_histo(struct v4l2_subdev *subdev)
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{
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return container_of(subdev, struct vsp1_histogram, entity.subdev);
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}
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int vsp1_histogram_init(struct vsp1_device *vsp1, struct vsp1_histogram *histo,
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enum vsp1_entity_type type, const char *name,
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const struct vsp1_entity_operations *ops,
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const unsigned int *formats, unsigned int num_formats,
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size_t data_size, u32 meta_format);
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void vsp1_histogram_destroy(struct vsp1_entity *entity);
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struct vsp1_histogram_buffer *
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vsp1_histogram_buffer_get(struct vsp1_histogram *histo);
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void vsp1_histogram_buffer_complete(struct vsp1_histogram *histo,
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struct vsp1_histogram_buffer *buf,
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size_t size);
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#endif /* __VSP1_HISTO_H__ */
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