1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0+ */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * vsp1_histo.h -- R-Car VSP1 Histogram API
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2016 Renesas Electronics Corporation
6*4882a593Smuzhiyun * Copyright (C) 2016 Laurent Pinchart
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
9*4882a593Smuzhiyun */
10*4882a593Smuzhiyun #ifndef __VSP1_HISTO_H__
11*4882a593Smuzhiyun #define __VSP1_HISTO_H__
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include <linux/list.h>
14*4882a593Smuzhiyun #include <linux/mutex.h>
15*4882a593Smuzhiyun #include <linux/spinlock.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #include <media/media-entity.h>
18*4882a593Smuzhiyun #include <media/v4l2-dev.h>
19*4882a593Smuzhiyun #include <media/videobuf2-v4l2.h>
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #include "vsp1_entity.h"
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun struct vsp1_device;
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun #define HISTO_PAD_SINK 0
26*4882a593Smuzhiyun #define HISTO_PAD_SOURCE 1
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun struct vsp1_histogram_buffer {
29*4882a593Smuzhiyun struct vb2_v4l2_buffer buf;
30*4882a593Smuzhiyun struct list_head queue;
31*4882a593Smuzhiyun void *addr;
32*4882a593Smuzhiyun };
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun struct vsp1_histogram {
35*4882a593Smuzhiyun struct vsp1_entity entity;
36*4882a593Smuzhiyun struct video_device video;
37*4882a593Smuzhiyun struct media_pad pad;
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun const u32 *formats;
40*4882a593Smuzhiyun unsigned int num_formats;
41*4882a593Smuzhiyun size_t data_size;
42*4882a593Smuzhiyun u32 meta_format;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun struct mutex lock;
45*4882a593Smuzhiyun struct vb2_queue queue;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun spinlock_t irqlock;
48*4882a593Smuzhiyun struct list_head irqqueue;
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun wait_queue_head_t wait_queue;
51*4882a593Smuzhiyun bool readout;
52*4882a593Smuzhiyun };
53*4882a593Smuzhiyun
vdev_to_histo(struct video_device * vdev)54*4882a593Smuzhiyun static inline struct vsp1_histogram *vdev_to_histo(struct video_device *vdev)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun return container_of(vdev, struct vsp1_histogram, video);
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
subdev_to_histo(struct v4l2_subdev * subdev)59*4882a593Smuzhiyun static inline struct vsp1_histogram *subdev_to_histo(struct v4l2_subdev *subdev)
60*4882a593Smuzhiyun {
61*4882a593Smuzhiyun return container_of(subdev, struct vsp1_histogram, entity.subdev);
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun int vsp1_histogram_init(struct vsp1_device *vsp1, struct vsp1_histogram *histo,
65*4882a593Smuzhiyun enum vsp1_entity_type type, const char *name,
66*4882a593Smuzhiyun const struct vsp1_entity_operations *ops,
67*4882a593Smuzhiyun const unsigned int *formats, unsigned int num_formats,
68*4882a593Smuzhiyun size_t data_size, u32 meta_format);
69*4882a593Smuzhiyun void vsp1_histogram_destroy(struct vsp1_entity *entity);
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun struct vsp1_histogram_buffer *
72*4882a593Smuzhiyun vsp1_histogram_buffer_get(struct vsp1_histogram *histo);
73*4882a593Smuzhiyun void vsp1_histogram_buffer_complete(struct vsp1_histogram *histo,
74*4882a593Smuzhiyun struct vsp1_histogram_buffer *buf,
75*4882a593Smuzhiyun size_t size);
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun #endif /* __VSP1_HISTO_H__ */
78