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

   1 /*
   2  * Common code for Allwinner SimpleFB with pipeline.
   3  *
   4  * (C) Copyright 2013-2014 Luc Verhaegen <libv@skynet.be>
   5  * (C) Copyright 2014-2015 Hans de Goede <hdegoede@redhat.com>
   6  * (C) Copyright 2017 Icenowy Zheng <icenowy@aosc.io>
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #include <fdtdec.h>
  12
  13 int sunxi_simplefb_fdt_match(void *blob, const char *pipeline)
  14 {
  15         int offset, ret;
  16
  17         /* Find a prefilled simpefb node, matching out pipeline config */
  18         offset = fdt_node_offset_by_compatible(blob, -1,
  19                                                "allwinner,simple-framebuffer");
  20         while (offset >= 0) {
  21                 ret = fdt_stringlist_search(blob, offset, "allwinner,pipeline",
  22                                             pipeline);
  23                 if (ret == 0)
  24                         break;
  25                 offset = fdt_node_offset_by_compatible(blob, offset,
  26                                                 "allwinner,simple-framebuffer");
  27         }
  28
  29         return offset;
  30 }