/* SPDX-License-Identifier: GPL-2.0+ */ /* * 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) */ #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__ */