git.sur5r.net Git - u-boot/blob - drivers/video/sunxi/simplefb_common.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Common code for Allwinner SimpleFB with pipeline.
   4  *
   5  * (C) Copyright 2013-2014 Luc Verhaegen <libv@skynet.be>
   6  * (C) Copyright 2014-2015 Hans de Goede <hdegoede@redhat.com>
   7  * (C) Copyright 2017 Icenowy Zheng <icenowy@aosc.io>
   8  */
   9
  10 #include <fdtdec.h>
  11
  12 int sunxi_simplefb_fdt_match(void *blob, const char *pipeline)
  13 {
  14         int offset, ret;
  15
  16         /* Find a prefilled simpefb node, matching out pipeline config */
  17         offset = fdt_node_offset_by_compatible(blob, -1,
  18                                                "allwinner,simple-framebuffer");
  19         while (offset >= 0) {
  20                 ret = fdt_stringlist_search(blob, offset, "allwinner,pipeline",
  21                                             pipeline);
  22                 if (ret == 0)
  23                         break;
  24                 offset = fdt_node_offset_by_compatible(blob, offset,
  25                                                 "allwinner,simple-framebuffer");
  26         }
  27
  28         return offset;
  29 }