Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * simplefb.h - Simple Framebuffer Device
4 *
5 * Copyright (C) 2013 David Herrmann <dh.herrmann@gmail.com>
6 */
7
8#ifndef __PLATFORM_DATA_SIMPLEFB_H__
9#define __PLATFORM_DATA_SIMPLEFB_H__
10
11#include <drm/drm_fourcc.h>
12#include <linux/fb.h>
13#include <linux/types.h>
14
15/* format array, use it to initialize a "struct simplefb_format" array */
16#define SIMPLEFB_FORMATS \
17{ \
18 { "r5g6b5", 16, {11, 5}, {5, 6}, {0, 5}, {0, 0}, DRM_FORMAT_RGB565 }, \
19 { "r5g5b5a1", 16, {11, 5}, {6, 5}, {1, 5}, {0, 1}, DRM_FORMAT_RGBA5551 }, \
20 { "x1r5g5b5", 16, {10, 5}, {5, 5}, {0, 5}, {0, 0}, DRM_FORMAT_XRGB1555 }, \
21 { "a1r5g5b5", 16, {10, 5}, {5, 5}, {0, 5}, {15, 1}, DRM_FORMAT_ARGB1555 }, \
22 { "r8g8b8", 24, {16, 8}, {8, 8}, {0, 8}, {0, 0}, DRM_FORMAT_RGB888 }, \
23 { "x8r8g8b8", 32, {16, 8}, {8, 8}, {0, 8}, {0, 0}, DRM_FORMAT_XRGB8888 }, \
24 { "a8r8g8b8", 32, {16, 8}, {8, 8}, {0, 8}, {24, 8}, DRM_FORMAT_ARGB8888 }, \
25 { "a8b8g8r8", 32, {0, 8}, {8, 8}, {16, 8}, {24, 8}, DRM_FORMAT_ABGR8888 }, \
26 { "x2r10g10b10", 32, {20, 10}, {10, 10}, {0, 10}, {0, 0}, DRM_FORMAT_XRGB2101010 }, \
27 { "a2r10g10b10", 32, {20, 10}, {10, 10}, {0, 10}, {30, 2}, DRM_FORMAT_ARGB2101010 }, \
28}
29
30/*
31 * Data-Format for Simple-Framebuffers
32 * @name: unique 0-terminated name that can be used to identify the mode
33 * @red,green,blue: Offsets and sizes of the single RGB parts
34 * @transp: Offset and size of the alpha bits. length=0 means no alpha
35 * @fourcc: 32bit DRM four-CC code (see drm_fourcc.h)
36 */
37struct simplefb_format {
38 const char *name;
39 u32 bits_per_pixel;
40 struct fb_bitfield red;
41 struct fb_bitfield green;
42 struct fb_bitfield blue;
43 struct fb_bitfield transp;
44 u32 fourcc;
45};
46
47/*
48 * Simple-Framebuffer description
49 * If the arch-boot code creates simple-framebuffers without DT support, it
50 * can pass the width, height, stride and format via this platform-data object.
51 * The framebuffer location must be given as IORESOURCE_MEM resource.
52 * @format must be a format as described in "struct simplefb_format" above.
53 */
54struct simplefb_platform_data {
55 u32 width;
56 u32 height;
57 u32 stride;
58 const char *format;
59};
60
61#endif /* __PLATFORM_DATA_SIMPLEFB_H__ */