1 /* 2 * simplefb.h - Simple Framebuffer Device 3 * 4 * Copyright (C) 2013 David Herrmann <[email protected]> 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 } 24 25 /* 26 * Data-Format for Simple-Framebuffers 27 * @name: unique 0-terminated name that can be used to identify the mode 28 * @red,green,blue: Offsets and sizes of the single RGB parts 29 * @transp: Offset and size of the alpha bits. length=0 means no alpha 30 * @fourcc: 32bit DRM four-CC code (see drm_fourcc.h) 31 */ 32 struct simplefb_format { 33 const char *name; 34 u32 bits_per_pixel; 35 struct fb_bitfield red; 36 struct fb_bitfield green; 37 struct fb_bitfield blue; 38 struct fb_bitfield transp; 39 u32 fourcc; 40 }; 41 42 /* 43 * Simple-Framebuffer description 44 * If the arch-boot code creates simple-framebuffers without DT support, it 45 * can pass the width, height, stride and format via this platform-data object. 46 * The framebuffer location must be given as IORESOURCE_MEM resource. 47 * @format must be a format as described in "struct simplefb_format" above. 48 */ 49 struct simplefb_platform_data { 50 u32 width; 51 u32 height; 52 u32 stride; 53 const char *format; 54 }; 55 56 #endif /* __PLATFORM_DATA_SIMPLEFB_H__ */ 57