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 { "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 { "x2r10g10b10", 32, {20, 10}, {10, 10}, {0, 10}, {0, 0}, DRM_FORMAT_XRGB2101010 }, \ 29 { "a2r10g10b10", 32, {20, 10}, {10, 10}, {0, 10}, {30, 2}, DRM_FORMAT_ARGB2101010 }, \ 30 } 31 32 /* 33 * Data-Format for Simple-Framebuffers 34 * @name: unique 0-terminated name that can be used to identify the mode 35 * @red,green,blue: Offsets and sizes of the single RGB parts 36 * @transp: Offset and size of the alpha bits. length=0 means no alpha 37 * @fourcc: 32bit DRM four-CC code (see drm_fourcc.h) 38 */ 39 struct simplefb_format { 40 const char *name; 41 u32 bits_per_pixel; 42 struct fb_bitfield red; 43 struct fb_bitfield green; 44 struct fb_bitfield blue; 45 struct fb_bitfield transp; 46 u32 fourcc; 47 }; 48 49 /* 50 * Simple-Framebuffer description 51 * If the arch-boot code creates simple-framebuffers without DT support, it 52 * can pass the width, height, stride and format via this platform-data object. 53 * The framebuffer location must be given as IORESOURCE_MEM resource. 54 * @format must be a format as described in "struct simplefb_format" above. 55 */ 56 struct simplefb_platform_data { 57 u32 width; 58 u32 height; 59 u32 stride; 60 const char *format; 61 }; 62 63 #endif /* __PLATFORM_DATA_SIMPLEFB_H__ */ 64