LXR linux/include/linux/platform

   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