1/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
2/*
3 * RP1 PiSP Front End statistics definitions
4 *
5 * Copyright (C) 2021 - Raspberry Pi Ltd.
6 *
7 */
8#ifndef _PISP_FE_STATISTICS_H_
9#define _PISP_FE_STATISTICS_H_
10
11#include <linux/types.h>
12
13#define PISP_FLOATING_STATS_NUM_ZONES 4
14#define PISP_AGC_STATS_NUM_BINS 1024
15#define PISP_AGC_STATS_SIZE 16
16#define PISP_AGC_STATS_NUM_ZONES (PISP_AGC_STATS_SIZE * PISP_AGC_STATS_SIZE)
17#define PISP_AGC_STATS_NUM_ROW_SUMS 512
18
19struct pisp_agc_statistics_zone {
20 __u64 Y_sum;
21 __u32 counted;
22 __u32 pad;
23} __attribute__((packed));
24
25struct pisp_agc_statistics {
26 __u32 row_sums[PISP_AGC_STATS_NUM_ROW_SUMS];
27 /*
28 * 32-bits per bin means an image (just less than) 16384x16384 pixels
29 * in size can weight every pixel from 0 to 15.
30 */
31 __u32 histogram[PISP_AGC_STATS_NUM_BINS];
32 struct pisp_agc_statistics_zone floating[PISP_FLOATING_STATS_NUM_ZONES];
33} __attribute__((packed));
34
35#define PISP_AWB_STATS_SIZE 32
36#define PISP_AWB_STATS_NUM_ZONES (PISP_AWB_STATS_SIZE * PISP_AWB_STATS_SIZE)
37
38struct pisp_awb_statistics_zone {
39 __u32 R_sum;
40 __u32 G_sum;
41 __u32 B_sum;
42 __u32 counted;
43} __attribute__((packed));
44
45struct pisp_awb_statistics {
46 struct pisp_awb_statistics_zone zones[PISP_AWB_STATS_NUM_ZONES];
47 struct pisp_awb_statistics_zone floating[PISP_FLOATING_STATS_NUM_ZONES];
48} __attribute__((packed));
49
50#define PISP_CDAF_STATS_SIZE 8
51#define PISP_CDAF_STATS_NUM_FOMS (PISP_CDAF_STATS_SIZE * PISP_CDAF_STATS_SIZE)
52
53struct pisp_cdaf_statistics {
54 __u64 foms[PISP_CDAF_STATS_NUM_FOMS];
55 __u64 floating[PISP_FLOATING_STATS_NUM_ZONES];
56} __attribute__((packed));
57
58struct pisp_statistics {
59 struct pisp_awb_statistics awb;
60 struct pisp_agc_statistics agc;
61 struct pisp_cdaf_statistics cdaf;
62} __attribute__((packed));
63
64#endif /* _PISP_FE_STATISTICS_H_ */