From 68f81b857563e8f739323385795f1e99b3d2e598 Mon Sep 17 00:00:00 2001
From: Stefan Roese
Date: Wed, 5 Aug 2020 13:56:11 +0200
Subject: dm: core: Add API to read PCI bus-range property

Add dev_read_pci_bus_range() to read bus-range property values

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
 drivers/core/read.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'drivers/core')

diff --git a/drivers/core/read.c b/drivers/core/read.c
index 8bb456bc3f0..86f3f881706 100644
--- a/drivers/core/read.c
+++ b/drivers/core/read.c
@@ -10,6 +10,7 @@
 #include <mapmem.h>
 #include <asm/types.h>
 #include <asm/io.h>
+#include <linux/ioport.h>
 
 int dev_read_u32(const struct udevice *dev, const char *propname, u32 *outp)
 {
@@ -359,3 +360,19 @@ int dev_get_child_count(const struct udevice *dev)
 {
 	return ofnode_get_child_count(dev_ofnode(dev));
 }
+
+int dev_read_pci_bus_range(const struct udevice *dev,
+			   struct resource *res)
+{
+	const u32 *values;
+	int len;
+
+	values = dev_read_prop(dev, "bus-range", &len);
+	if (!values || len < sizeof(*values) * 2)
+		return -EINVAL;
+
+	res->start = *values++;
+	res->end = *values;
+
+	return 0;
+}
-- 
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