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
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