1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
4 * Author: James.Qian.Wang <james.qian.wang@arm.com>
5 *
6 */
7
8#ifndef _KOMEDA_FORMAT_CAPS_H_
9#define _KOMEDA_FORMAT_CAPS_H_
10
11#include <linux/types.h>
12#include <uapi/drm/drm_fourcc.h>
13#include <drm/drm_fourcc.h>
14
15#define AFBC(x) DRM_FORMAT_MOD_ARM_AFBC(x)
16
17/* afbc layerout */
18#define AFBC_16x16(x) AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 | (x))
19#define AFBC_32x8(x) AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 | (x))
20
21/* afbc features */
22#define _YTR AFBC_FORMAT_MOD_YTR
23#define _SPLIT AFBC_FORMAT_MOD_SPLIT
24#define _SPARSE AFBC_FORMAT_MOD_SPARSE
25#define _CBR AFBC_FORMAT_MOD_CBR
26#define _TILED AFBC_FORMAT_MOD_TILED
27#define _SC AFBC_FORMAT_MOD_SC
28
29/* layer_type */
30#define KOMEDA_FMT_RICH_LAYER BIT(0)
31#define KOMEDA_FMT_SIMPLE_LAYER BIT(1)
32#define KOMEDA_FMT_WB_LAYER BIT(2)
33
34#define AFBC_TH_LAYOUT_ALIGNMENT 8
35#define AFBC_HEADER_SIZE 16
36#define AFBC_SUPERBLK_ALIGNMENT 128
37#define AFBC_SUPERBLK_PIXELS 256
38#define AFBC_BODY_START_ALIGNMENT 1024
39#define AFBC_TH_BODY_START_ALIGNMENT 4096
40
41/**
42 * struct komeda_format_caps
43 *
44 * komeda_format_caps is for describing ARM display specific features and
45 * limitations for a specific format, and format_caps will be linked into
46 * &komeda_framebuffer like a extension of &drm_format_info.
47 *
48 * NOTE: one fourcc may has two different format_caps items for fourcc and
49 * fourcc+modifier
50 *
51 * @hw_id: hw format id, hw specific value.
52 * @fourcc: drm fourcc format.
53 * @supported_layer_types: indicate which layer supports this format
54 * @supported_rots: allowed rotations for this format
55 * @supported_afbc_layouts: supported afbc layerout
56 * @supported_afbc_features: supported afbc features
57 */
58struct komeda_format_caps {
59 u32 hw_id;
60 u32 fourcc;
61 u32 supported_layer_types;
62 u32 supported_rots;
63 u32 supported_afbc_layouts;
64 u64 supported_afbc_features;
65};
66
67/**
68 * struct komeda_format_caps_table - format_caps mananger
69 *
70 * @n_formats: the size of format_caps list.
71 * @format_caps: format_caps list.
72 * @format_mod_supported: Optional. Some HW may have special requirements or
73 * limitations which can not be described by format_caps, this func supply HW
74 * the ability to do the further HW specific check.
75 */
76struct komeda_format_caps_table {
77 u32 n_formats;
78 const struct komeda_format_caps *format_caps;
79 bool (*format_mod_supported)(const struct komeda_format_caps *caps,
80 u32 layer_type, u64 modifier, u32 rot);
81};
82
83extern u64 komeda_supported_modifiers[];
84
85const struct komeda_format_caps *
86komeda_get_format_caps(struct komeda_format_caps_table *table,
87 u32 fourcc, u64 modifier);
88
89u32 komeda_get_afbc_format_bpp(const struct drm_format_info *info,
90 u64 modifier);
91
92u32 *komeda_get_layer_fourcc_list(struct komeda_format_caps_table *table,
93 u32 layer_type, u32 *n_fmts);
94
95void komeda_put_fourcc_list(u32 *fourcc_list);
96
97bool komeda_format_mod_supported(struct komeda_format_caps_table *table,
98 u32 layer_type, u32 fourcc, u64 modifier,
99 u32 rot);
100
101#endif
102

source code of linux/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h