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_ */