1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * vsp1_hgt.h  --  R-Car VSP1 Histogram Generator 2D
4  *
5  * Copyright (C) 2016 Renesas Electronics Corporation
6  *
7  * Contact: Niklas Söderlund (niklas.soderlund@ragnatech.se)
8  */
9 #ifndef __VSP1_HGT_H__
10 #define __VSP1_HGT_H__
11 
12 #include <media/media-entity.h>
13 #include <media/v4l2-ctrls.h>
14 #include <media/v4l2-subdev.h>
15 
16 #include "vsp1_histo.h"
17 
18 struct vsp1_device;
19 
20 #define HGT_NUM_HUE_AREAS			6
21 
22 struct vsp1_hgt {
23 	struct vsp1_histogram histo;
24 
25 	struct v4l2_ctrl_handler ctrls;
26 
27 	u8 hue_areas[HGT_NUM_HUE_AREAS * 2];
28 };
29 
to_hgt(struct v4l2_subdev * subdev)30 static inline struct vsp1_hgt *to_hgt(struct v4l2_subdev *subdev)
31 {
32 	return container_of(subdev, struct vsp1_hgt, histo.entity.subdev);
33 }
34 
35 struct vsp1_hgt *vsp1_hgt_create(struct vsp1_device *vsp1);
36 void vsp1_hgt_frame_end(struct vsp1_entity *hgt);
37 
38 #endif /* __VSP1_HGT_H__ */
39