1/*
2 * simplefb.h - Simple Framebuffer Device
3 *
4 * Copyright (C) 2013 David Herrmann <dh.herrmann@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12#ifndef __PLATFORM_DATA_SIMPLEFB_H__
13#define __PLATFORM_DATA_SIMPLEFB_H__
14
15#include <drm/drm_fourcc.h>
16#include <linux/fb.h>
17#include <linux/kernel.h>
18
19/* format array, use it to initialize a "struct simplefb_format" array */
20#define SIMPLEFB_FORMATS \
21{ \
22 { "r5g6b5", 16, {11, 5}, {5, 6}, {0, 5}, {0, 0}, DRM_FORMAT_RGB565 }, \
23 { "x1r5g5b5", 16, {10, 5}, {5, 5}, {0, 5}, {0, 0}, DRM_FORMAT_XRGB1555 }, \
24 { "a1r5g5b5", 16, {10, 5}, {5, 5}, {0, 5}, {15, 1}, DRM_FORMAT_ARGB1555 }, \
25 { "r8g8b8", 24, {16, 8}, {8, 8}, {0, 8}, {0, 0}, DRM_FORMAT_RGB888 }, \
26 { "x8r8g8b8", 32, {16, 8}, {8, 8}, {0, 8}, {0, 0}, DRM_FORMAT_XRGB8888 }, \
27 { "a8r8g8b8", 32, {16, 8}, {8, 8}, {0, 8}, {24, 8}, DRM_FORMAT_ARGB8888 }, \
28 { "a8b8g8r8", 32, {0, 8}, {8, 8}, {16, 8}, {24, 8}, DRM_FORMAT_ABGR8888 }, \
29 { "x2r10g10b10", 32, {20, 10}, {10, 10}, {0, 10}, {0, 0}, DRM_FORMAT_XRGB2101010 }, \
30 { "a2r10g10b10", 32, {20, 10}, {10, 10}, {0, 10}, {30, 2}, DRM_FORMAT_ARGB2101010 }, \
31}
32
33/*
34 * Data-Format for Simple-Framebuffers
35 * @name: unique 0-terminated name that can be used to identify the mode
36 * @red,green,blue: Offsets and sizes of the single RGB parts
37 * @transp: Offset and size of the alpha bits. length=0 means no alpha
38 * @fourcc: 32bit DRM four-CC code (see drm_fourcc.h)
39 */
40struct simplefb_format {
41 const char *name;
42 u32 bits_per_pixel;
43 struct fb_bitfield red;
44 struct fb_bitfield green;
45 struct fb_bitfield blue;
46 struct fb_bitfield transp;
47 u32 fourcc;
48};
49
50/*
51 * Simple-Framebuffer description
52 * If the arch-boot code creates simple-framebuffers without DT support, it
53 * can pass the width, height, stride and format via this platform-data object.
54 * The framebuffer location must be given as IORESOURCE_MEM resource.
55 * @format must be a format as described in "struct simplefb_format" above.
56 */
57struct simplefb_platform_data {
58 u32 width;
59 u32 height;
60 u32 stride;
61 const char *format;
62};
63
64#endif /* __PLATFORM_DATA_SIMPLEFB_H__ */
65