mirror of
https://github.com/AsahiLinux/u-boot
synced 2025-01-12 13:18:52 +00:00
38 lines
753 B
C
38 lines
753 B
C
|
/*
|
||
|
|
* Copyright (c) 2017 Google, Inc
|
||
|
|
* Written by Simon Glass <sjg@chromium.org>
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: GPL-2.0+
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <common.h>
|
||
|
|
#include <dm.h>
|
||
|
|
#include <dm/of_addr.h>
|
||
|
|
#include <dm/read.h>
|
||
|
|
#include <linux/ioport.h>
|
||
|
|
|
||
|
|
int dev_read_resource(struct udevice *dev, uint index, struct resource *res)
|
||
|
|
{
|
||
|
|
ofnode node = dev_ofnode(dev);
|
||
|
|
|
||
|
|
#ifdef CONFIG_OF_LIVE
|
||
|
|
if (ofnode_is_np(node)) {
|
||
|
|
return of_address_to_resource(ofnode_to_np(node), index, res);
|
||
|
|
} else
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
struct fdt_resource fres;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = fdt_get_resource(gd->fdt_blob, ofnode_to_offset(node),
|
||
|
|
"reg", index, &fres);
|
||
|
|
if (ret < 0)
|
||
|
|
return -EINVAL;
|
||
|
|
memset(res, '\0', sizeof(*res));
|
||
|
|
res->start = fres.start;
|
||
|
|
res->end = fres.end;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|