root/include/linux/platform_data/simplefb.h

INCLUDED FROM

   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/kernel.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         { "x1r5g5b5", 16, {10, 5}, {5, 5}, {0, 5}, {0, 0}, DRM_FORMAT_XRGB1555 }, \
  20         { "a1r5g5b5", 16, {10, 5}, {5, 5}, {0, 5}, {15, 1}, DRM_FORMAT_ARGB1555 }, \
  21         { "r8g8b8", 24, {16, 8}, {8, 8}, {0, 8}, {0, 0}, DRM_FORMAT_RGB888 }, \
  22         { "x8r8g8b8", 32, {16, 8}, {8, 8}, {0, 8}, {0, 0}, DRM_FORMAT_XRGB8888 }, \
  23         { "a8r8g8b8", 32, {16, 8}, {8, 8}, {0, 8}, {24, 8}, DRM_FORMAT_ARGB8888 }, \
  24         { "a8b8g8r8", 32, {0, 8}, {8, 8}, {16, 8}, {24, 8}, DRM_FORMAT_ABGR8888 }, \
  25         { "x2r10g10b10", 32, {20, 10}, {10, 10}, {0, 10}, {0, 0}, DRM_FORMAT_XRGB2101010 }, \
  26         { "a2r10g10b10", 32, {20, 10}, {10, 10}, {0, 10}, {30, 2}, DRM_FORMAT_ARGB2101010 }, \
  27 }
  28 
  29 /*
  30  * Data-Format for Simple-Framebuffers
  31  * @name: unique 0-terminated name that can be used to identify the mode
  32  * @red,green,blue: Offsets and sizes of the single RGB parts
  33  * @transp: Offset and size of the alpha bits. length=0 means no alpha
  34  * @fourcc: 32bit DRM four-CC code (see drm_fourcc.h)
  35  */
  36 struct simplefb_format {
  37         const char *name;
  38         u32 bits_per_pixel;
  39         struct fb_bitfield red;
  40         struct fb_bitfield green;
  41         struct fb_bitfield blue;
  42         struct fb_bitfield transp;
  43         u32 fourcc;
  44 };
  45 
  46 /*
  47  * Simple-Framebuffer description
  48  * If the arch-boot code creates simple-framebuffers without DT support, it
  49  * can pass the width, height, stride and format via this platform-data object.
  50  * The framebuffer location must be given as IORESOURCE_MEM resource.
  51  * @format must be a format as described in "struct simplefb_format" above.
  52  */
  53 struct simplefb_platform_data {
  54         u32 width;
  55         u32 height;
  56         u32 stride;
  57         const char *format;
  58 };
  59 
  60 #endif /* __PLATFORM_DATA_SIMPLEFB_H__ */