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1/* SPDX-License-Identifier: GPL-2.0+ */2/*3 * vsp1_histo.h -- R-Car VSP1 Histogram API4 *5 * Copyright (C) 2016 Renesas Electronics Corporation6 * Copyright (C) 2016 Laurent Pinchart7 *8 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)9 */10#ifndef __VSP1_HISTO_H__11#define __VSP1_HISTO_H__12 13#include <linux/list.h>14#include <linux/mutex.h>15#include <linux/spinlock.h>16 17#include <media/media-entity.h>18#include <media/v4l2-dev.h>19#include <media/videobuf2-v4l2.h>20 21#include "vsp1_entity.h"22 23struct vsp1_device;24 25#define HISTO_PAD_SINK 026#define HISTO_PAD_SOURCE 127 28struct vsp1_histogram_buffer {29 struct vb2_v4l2_buffer buf;30 struct list_head queue;31 void *addr;32};33 34struct vsp1_histogram {35 struct vsp1_entity entity;36 struct video_device video;37 struct media_pad pad;38 39 const u32 *formats;40 unsigned int num_formats;41 size_t data_size;42 u32 meta_format;43 44 struct mutex lock;45 struct vb2_queue queue;46 47 spinlock_t irqlock;48 struct list_head irqqueue;49 50 wait_queue_head_t wait_queue;51 bool readout;52};53 54static inline struct vsp1_histogram *vdev_to_histo(struct video_device *vdev)55{56 return container_of(vdev, struct vsp1_histogram, video);57}58 59static inline struct vsp1_histogram *subdev_to_histo(struct v4l2_subdev *subdev)60{61 return container_of(subdev, struct vsp1_histogram, entity.subdev);62}63 64int vsp1_histogram_init(struct vsp1_device *vsp1, struct vsp1_histogram *histo,65 enum vsp1_entity_type type, const char *name,66 const struct vsp1_entity_operations *ops,67 const unsigned int *formats, unsigned int num_formats,68 size_t data_size, u32 meta_format);69void vsp1_histogram_destroy(struct vsp1_entity *entity);70 71struct vsp1_histogram_buffer *72vsp1_histogram_buffer_get(struct vsp1_histogram *histo);73void vsp1_histogram_buffer_complete(struct vsp1_histogram *histo,74 struct vsp1_histogram_buffer *buf,75 size_t size);76 77#endif /* __VSP1_HISTO_H__ */78