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| author | Imre Kaloz <kaloz@openwrt.org> | 2015-05-03 17:56:32 +0000 |
|---|---|---|
| committer | Imre Kaloz <kaloz@openwrt.org> | 2015-05-03 17:56:32 +0000 |
| commit | f86c07d8d446877fcd11906a80e7c71a6f021647 (patch) | |
| tree | 5692859e51057d1fef998dd7c1b86617c160f130 /target/linux/generic/patches-4.0 | |
| parent | 4d9694981b896ae9224be5e96bfb1e7894e0c5c1 (diff) | |
| download | upstream-f86c07d8d446877fcd11906a80e7c71a6f021647.tar.gz upstream-f86c07d8d446877fcd11906a80e7c71a6f021647.tar.bz2 upstream-f86c07d8d446877fcd11906a80e7c71a6f021647.zip | |
The ability to read MAC addresses from MTD is useful for other targets besides ramips and lantiq as well.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
SVN-Revision: 45596
Diffstat (limited to 'target/linux/generic/patches-4.0')
| -rw-r--r-- | target/linux/generic/patches-4.0/681-NET-add-of_get_mac_address_mtd.patch | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.0/681-NET-add-of_get_mac_address_mtd.patch b/target/linux/generic/patches-4.0/681-NET-add-of_get_mac_address_mtd.patch new file mode 100644 index 0000000000..bb3bf98575 --- /dev/null +++ b/target/linux/generic/patches-4.0/681-NET-add-of_get_mac_address_mtd.patch @@ -0,0 +1,75 @@ +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 +76,39 @@ const void *of_get_mac_address(struct de + return NULL; + } + EXPORT_SYMBOL(of_get_mac_address); ++ ++int of_get_mac_address_mtd(struct device_node *np, void *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; ++ ++ 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, (u_char *) mac); ++ put_mtd_device(mtd); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(of_get_mac_address_mtd); +--- a/include/linux/of_net.h ++++ b/include/linux/of_net.h +@@ -11,6 +11,7 @@ + #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); ++extern int of_get_mac_address_mtd(struct device_node *np, void *mac); + #else + static inline int of_get_phy_mode(struct device_node *np) + { |