include/linux/platform_data/simplefb.h

   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  */
  40 struct 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  */
  57 struct simplefb_platform_data {
  58         u32 width;
  59         u32 height;
  60         u32 stride;
  61         const char *format;
  62 };
  63
  64 #endif /* __PLATFORM_DATA_SIMPLEFB_H__ */