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 | { "x8b8g8r8", 32, {0, 8}, {8, 8}, {16, 8}, {0, 0}, DRM_FORMAT_XBGR8888 }, \ |
26 | { "a8b8g8r8", 32, {0, 8}, {8, 8}, {16, 8}, {24, 8}, DRM_FORMAT_ABGR8888 }, \ |
27 | { "x2r10g10b10", 32, {20, 10}, {10, 10}, {0, 10}, {0, 0}, DRM_FORMAT_XRGB2101010 }, \ |
28 | { "a2r10g10b10", 32, {20, 10}, {10, 10}, {0, 10}, {30, 2}, DRM_FORMAT_ARGB2101010 }, \ |
29 | } |
30 | |
31 | /* |
32 | * Data-Format for Simple-Framebuffers |
33 | * @name: unique 0-terminated name that can be used to identify the mode |
34 | * @red,green,blue: Offsets and sizes of the single RGB parts |
35 | * @transp: Offset and size of the alpha bits. length=0 means no alpha |
36 | * @fourcc: 32bit DRM four-CC code (see drm_fourcc.h) |
37 | */ |
38 | struct simplefb_format { |
39 | const char *name; |
40 | u32 bits_per_pixel; |
41 | struct fb_bitfield red; |
42 | struct fb_bitfield green; |
43 | struct fb_bitfield blue; |
44 | struct fb_bitfield transp; |
45 | u32 fourcc; |
46 | }; |
47 | |
48 | /* |
49 | * Simple-Framebuffer description |
50 | * If the arch-boot code creates simple-framebuffers without DT support, it |
51 | * can pass the width, height, stride and format via this platform-data object. |
52 | * The framebuffer location must be given as IORESOURCE_MEM resource. |
53 | * @format must be a format as described in "struct simplefb_format" above. |
54 | */ |
55 | struct simplefb_platform_data { |
56 | u32 width; |
57 | u32 height; |
58 | u32 stride; |
59 | const char *format; |
60 | }; |
61 | |
62 | #endif /* __PLATFORM_DATA_SIMPLEFB_H__ */ |
63 | |