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 }
30