1c4b5f4919
Adopt the SPDX license identifier headers to ease license compliance management. All files in the driver are licensed under the GPLv2+ except for the vsp1_regs.h file which is licensed under the GPLv2. This is likely an oversight, but fixing this requires contacting the copyright owners and is out of scope for this patch. While at it fix the file descriptions to match file names where copy and paste error occurred. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
/* 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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