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authorJames <>2015-11-04 11:49:21 +0000
committerJames <>2015-11-04 11:49:21 +0000
commit716ca530e1c4515d8683c9d5be3d56b301758b66 (patch)
tree700eb5bcc1a462a5f21dcec15ce7c97ecfefa772 /target/linux/generic/patches-3.18/681-NET-add-of_get_mac_address_mtd.patch
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Diffstat (limited to 'target/linux/generic/patches-3.18/681-NET-add-of_get_mac_address_mtd.patch')
-rw-r--r--target/linux/generic/patches-3.18/681-NET-add-of_get_mac_address_mtd.patch88
1 files changed, 88 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.18/681-NET-add-of_get_mac_address_mtd.patch b/target/linux/generic/patches-3.18/681-NET-add-of_get_mac_address_mtd.patch
new file mode 100644
index 0000000..a836eed
--- /dev/null
+++ b/target/linux/generic/patches-3.18/681-NET-add-of_get_mac_address_mtd.patch
@@ -0,0 +1,88 @@
+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
+@@ -75,3 +76,45 @@ const void *of_get_mac_address(struct de
+ return NULL;
+ }
+ 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
+@@ -11,6 +11,14 @@
+ #include <linux/of.h>
+ 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
+ #else
+ static inline int of_get_phy_mode(struct device_node *np)
+ {