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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * camss-format.h
4 *
5 * Qualcomm MSM Camera Subsystem - Format helpers
6 *
7 * Copyright (c) 2023, The Linux Foundation. All rights reserved.
8 * Copyright (c) 2023 Qualcomm Technologies, Inc.
9 */
10#ifndef __CAMSS_FORMAT_H__
11#define __CAMSS_FORMAT_H__
12
13#include <linux/types.h>
14
15#define PER_PLANE_DATA(plane, h_fract_num, h_fract_den, v_fract_num, v_fract_den, _bpp) \
16 .hsub[(plane)].numerator = (h_fract_num), \
17 .hsub[(plane)].denominator = (h_fract_den), \
18 .vsub[(plane)].numerator = (v_fract_num), \
19 .vsub[(plane)].denominator = (v_fract_den), \
20 .bpp[(plane)] = (_bpp)
21
22/*
23 * struct fract - Represents a fraction
24 * @numerator: Store the numerator part of the fraction
25 * @denominator: Store the denominator part of the fraction
26 */
27struct fract {
28 u8 numerator;
29 u8 denominator;
30};
31
32/*
33 * struct camss_format_info - ISP media bus format information
34 * @code: V4L2 media bus format code
35 * @mbus_bpp: Media bus bits per pixel
36 * @pixelformat: V4L2 pixel format FCC identifier
37 * @planes: Number of planes
38 * @hsub: Horizontal subsampling (for each plane)
39 * @vsub: Vertical subsampling (for each plane)
40 * @bpp: Bits per pixel when stored in memory (for each plane)
41 */
42struct camss_format_info {
43 u32 code;
44 u32 mbus_bpp;
45 u32 pixelformat;
46 u8 planes;
47 struct fract hsub[3];
48 struct fract vsub[3];
49 unsigned int bpp[3];
50};
51
52struct camss_formats {
53 unsigned int nformats;
54 const struct camss_format_info *formats;
55};
56
57u8 camss_format_get_bpp(const struct camss_format_info *formats, unsigned int nformats, u32 code);
58u32 camss_format_find_code(u32 *code, unsigned int n_code, unsigned int index, u32 req_code);
59int camss_format_find_format(u32 code, u32 pixelformat, const struct camss_format_info *formats,
60 unsigned int nformats);
61
62#endif /* __CAMSS_FORMAT_H__ */