mirror of https://github.com/hak5/openwrt-owl.git
89 lines
2.4 KiB
Diff
89 lines
2.4 KiB
Diff
|
From: John Crispin <blogic@openwrt.org>
|
||
|
|
Date: Sun, 27 Jul 2014 09:40:01 +0100
|
||
|
|
Subject: NET: add of_get_mac_address_mtd()
|
||
|
|
|
||
|
|
Many embedded devices have information such as mac addresses stored inside mtd
|
||
|
|
devices. This patch allows us to add a property inside a node describing a
|
||
|
|
network interface. The new property points at a mtd partition with an offset
|
||
|
|
where the mac address can be found.
|
||
|
|
|
||
|
|
Signed-off-by: John Crispin <blogic@openwrt.org>
|
||
|
|
---
|
||
|
|
drivers/of/of_net.c | 37 +++++++++++++++++++++++++++++++++++++
|
||
|
|
include/linux/of_net.h | 1 +
|
||
|
|
2 files changed, 38 insertions(+)
|
||
|
|
|
||
|
|
--- a/drivers/of/of_net.c
|
||
|
|
+++ b/drivers/of/of_net.c
|
||
|
|
@@ -10,6 +10,7 @@
|
||
|
|
#include <linux/of_net.h>
|
||
|
|
#include <linux/phy.h>
|
||
|
|
#include <linux/export.h>
|
||
|
|
+#include <linux/mtd/mtd.h>
|
||
|
|
|
||
|
|
/**
|
||
|
|
* of_get_phy_mode - Get phy mode for given device_node
|
||
|
|
@@ -80,3 +81,45 @@ const void *of_get_mac_address(struct de
|
||
|
|
return of_get_mac_addr(np, "address");
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(of_get_mac_address);
|
||
|
|
+
|
||
|
|
+#ifdef CONFIG_MTD
|
||
|
|
+int of_get_mac_address_mtd(struct device_node *np, unsigned char *mac)
|
||
|
|
+{
|
||
|
|
+ struct device_node *mtd_np = NULL;
|
||
|
|
+ size_t retlen;
|
||
|
|
+ int size, ret;
|
||
|
|
+ struct mtd_info *mtd;
|
||
|
|
+ const char *part;
|
||
|
|
+ const __be32 *list;
|
||
|
|
+ phandle phandle;
|
||
|
|
+ u32 mac_inc = 0;
|
||
|
|
+
|
||
|
|
+ list = of_get_property(np, "mtd-mac-address", &size);
|
||
|
|
+ if (!list || (size != (2 * sizeof(*list))))
|
||
|
|
+ return -ENOENT;
|
||
|
|
+
|
||
|
|
+ phandle = be32_to_cpup(list++);
|
||
|
|
+ if (phandle)
|
||
|
|
+ mtd_np = of_find_node_by_phandle(phandle);
|
||
|
|
+
|
||
|
|
+ if (!mtd_np)
|
||
|
|
+ return -ENOENT;
|
||
|
|
+
|
||
|
|
+ part = of_get_property(mtd_np, "label", NULL);
|
||
|
|
+ if (!part)
|
||
|
|
+ part = mtd_np->name;
|
||
|
|
+
|
||
|
|
+ mtd = get_mtd_device_nm(part);
|
||
|
|
+ if (IS_ERR(mtd))
|
||
|
|
+ return PTR_ERR(mtd);
|
||
|
|
+
|
||
|
|
+ ret = mtd_read(mtd, be32_to_cpup(list), 6, &retlen, mac);
|
||
|
|
+ put_mtd_device(mtd);
|
||
|
|
+
|
||
|
|
+ if (!of_property_read_u32(np, "mtd-mac-address-increment", &mac_inc))
|
||
|
|
+ mac[5] += mac_inc;
|
||
|
|
+
|
||
|
|
+ return ret;
|
||
|
|
+}
|
||
|
|
+EXPORT_SYMBOL_GPL(of_get_mac_address_mtd);
|
||
|
|
+#endif
|
||
|
|
--- a/include/linux/of_net.h
|
||
|
|
+++ b/include/linux/of_net.h
|
||
|
|
@@ -13,6 +13,14 @@
|
||
|
|
struct net_device;
|
||
|
|
extern int of_get_phy_mode(struct device_node *np);
|
||
|
|
extern const void *of_get_mac_address(struct device_node *np);
|
||
|
|
+#ifdef CONFIG_MTD
|
||
|
|
+extern int of_get_mac_address_mtd(struct device_node *np, unsigned char *mac);
|
||
|
|
+#else
|
||
|
|
+static inline int of_get_mac_address_mtd(struct device_node *np, unsigned char *mac)
|
||
|
|
+{
|
||
|
|
+ return -ENOENT;
|
||
|
|
+}
|
||
|
|
+#endif
|
||
|
|
extern struct net_device *of_find_net_device_by_node(struct device_node *np);
|
||
|
|
#else
|
||
|
|
static inline int of_get_phy_mode(struct device_node *np)
|