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