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kernel: fold of_get_mac_address_mtd into of_get_mac_address

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This makes it easier to keep drivers in sync with upstream

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 48026
This commit is contained in:
Felix Fietkau 2016-01-01 18:57:29 +00:00
parent 22693a9086
commit 46519964ff
3 changed files with 112 additions and 94 deletions
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85
target/linux/generic/patches-4.3/681-NET-add-of_get_mac_address_mtd.patch
View file

@ -1,6 +1,6 @@
From: John Crispin <blogic@openwrt.org>
Date: Sun, 27 Jul 2014 09:40:01 +0100
Subject: NET: add of_get_mac_address_mtd()
Subject: NET: add mtd-mac-address support to of_get_mac_address()
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
@ -8,6 +8,7 @@ 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>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
drivers/of/of_net.c | 37 +++++++++++++++++++++++++++++++++++++
include/linux/of_net.h | 1 +
@ -23,15 +24,15 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
/**
* 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");
@@ -47,6 +48,66 @@ static const void *of_get_mac_addr(struc
return NULL;
}
EXPORT_SYMBOL(of_get_mac_address);
+
+#ifdef CONFIG_MTD
+int of_get_mac_address_mtd(struct device_node *np, unsigned char *mac)
+static const void *of_get_mac_address_mtd(struct device_node *np)
+{
+#ifdef CONFIG_MTD
+ struct device_node *mtd_np = NULL;
+ struct property *prop;
+ size_t retlen;
+ int size, ret;
+ struct mtd_info *mtd;
@ -39,17 +40,18 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ const __be32 *list;
+ phandle phandle;
+ u32 mac_inc = 0;
+ u8 mac[ETH_ALEN];
+
+ list = of_get_property(np, "mtd-mac-address", &size);
+ if (!list || (size != (2 * sizeof(*list))))
+ return -ENOENT;
+ return NULL;
+
+ phandle = be32_to_cpup(list++);
+ if (phandle)
+ mtd_np = of_find_node_by_phandle(phandle);
+
+ if (!mtd_np)
+ return -ENOENT;
+ return NULL;
+
+ part = of_get_property(mtd_np, "label", NULL);
+ if (!part)
@ -57,7 +59,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+
+ mtd = get_mtd_device_nm(part);
+ if (IS_ERR(mtd))
+ return PTR_ERR(mtd);
+ return NULL;
+
+ ret = mtd_read(mtd, be32_to_cpup(list), 6, &retlen, mac);
+ put_mtd_device(mtd);
@ -65,24 +67,49 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ 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);
+ if (!is_valid_ether_addr(mac))
+ return NULL;
+
+ prop = kzalloc(sizeof(*prop), GFP_KERNEL);
+ if (!prop)
+ return NULL;
+
+ prop->name = "mac-address";
+ prop->length = ETH_ALEN;
+ prop->value = kmemdup(mac, ETH_ALEN, GFP_KERNEL);
+ if (!prop->value || of_add_property(np, prop))
+ goto free;
+
+ return prop->value;
+free:
+ kfree(prop->value);
+ kfree(prop);
+#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;
+ return NULL;
+}
+#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)
+
/**
* Search the device tree for the best MAC address to use. 'mac-address' is
* checked first, because that is supposed to contain to "most recent" MAC
@@ -64,6 +125,9 @@ static const void *of_get_mac_addr(struc
* addresses. Some older U-Boots only initialized 'local-mac-address'. In
* this case, the real MAC is in 'local-mac-address', and 'mac-address' exists
* but is all zeros.
+ *
+ * If a mtd-mac-address property exists, try to fetch the MAC address from the
+ * specified mtd device, and store it as a 'mac-address' property
*/
const void *of_get_mac_address(struct device_node *np)
{
@@ -77,6 +141,10 @@ const void *of_get_mac_address(struct de
if (addr)
return addr;
- return of_get_mac_addr(np, "address");
+ addr = of_get_mac_addr(np, "address");
+ if (addr)
+ return addr;
+
+ return of_get_mac_address_mtd(np);
}
EXPORT_SYMBOL(of_get_mac_address);

85
target/linux/generic/patches-4.4/681-NET-add-of_get_mac_address_mtd.patch
View file

@ -1,6 +1,6 @@
From: John Crispin <blogic@openwrt.org>
Date: Sun, 27 Jul 2014 09:40:01 +0100
Subject: NET: add of_get_mac_address_mtd()
Subject: NET: add mtd-mac-address support to of_get_mac_address()
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
@ -8,6 +8,7 @@ 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>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
drivers/of/of_net.c | 37 +++++++++++++++++++++++++++++++++++++
include/linux/of_net.h | 1 +
@ -23,15 +24,15 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
/**
* 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");
@@ -47,6 +48,66 @@ static const void *of_get_mac_addr(struc
return NULL;
}
EXPORT_SYMBOL(of_get_mac_address);
+
+#ifdef CONFIG_MTD
+int of_get_mac_address_mtd(struct device_node *np, unsigned char *mac)
+static const void *of_get_mac_address_mtd(struct device_node *np)
+{
+#ifdef CONFIG_MTD
+ struct device_node *mtd_np = NULL;
+ struct property *prop;
+ size_t retlen;
+ int size, ret;
+ struct mtd_info *mtd;
@ -39,17 +40,18 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ const __be32 *list;
+ phandle phandle;
+ u32 mac_inc = 0;
+ u8 mac[ETH_ALEN];
+
+ list = of_get_property(np, "mtd-mac-address", &size);
+ if (!list || (size != (2 * sizeof(*list))))
+ return -ENOENT;
+ return NULL;
+
+ phandle = be32_to_cpup(list++);
+ if (phandle)
+ mtd_np = of_find_node_by_phandle(phandle);
+
+ if (!mtd_np)
+ return -ENOENT;
+ return NULL;
+
+ part = of_get_property(mtd_np, "label", NULL);
+ if (!part)
@ -57,7 +59,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+
+ mtd = get_mtd_device_nm(part);
+ if (IS_ERR(mtd))
+ return PTR_ERR(mtd);
+ return NULL;
+
+ ret = mtd_read(mtd, be32_to_cpup(list), 6, &retlen, mac);
+ put_mtd_device(mtd);
@ -65,24 +67,49 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ 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);
+ if (!is_valid_ether_addr(mac))
+ return NULL;
+
+ prop = kzalloc(sizeof(*prop), GFP_KERNEL);
+ if (!prop)
+ return NULL;
+
+ prop->name = "mac-address";
+ prop->length = ETH_ALEN;
+ prop->value = kmemdup(mac, ETH_ALEN, GFP_KERNEL);
+ if (!prop->value || of_add_property(np, prop))
+ goto free;
+
+ return prop->value;
+free:
+ kfree(prop->value);
+ kfree(prop);
+#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;
+ return NULL;
+}
+#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)
+
/**
* Search the device tree for the best MAC address to use. 'mac-address' is
* checked first, because that is supposed to contain to "most recent" MAC
@@ -64,6 +125,9 @@ static const void *of_get_mac_addr(struc
* addresses. Some older U-Boots only initialized 'local-mac-address'. In
* this case, the real MAC is in 'local-mac-address', and 'mac-address' exists
* but is all zeros.
+ *
+ * If a mtd-mac-address property exists, try to fetch the MAC address from the
+ * specified mtd device, and store it as a 'mac-address' property
*/
const void *of_get_mac_address(struct device_node *np)
{
@@ -77,6 +141,10 @@ const void *of_get_mac_address(struct de
if (addr)
return addr;
- return of_get_mac_addr(np, "address");
+ addr = of_get_mac_addr(np, "address");
+ if (addr)
+ return addr;
+
+ return of_get_mac_address_mtd(np);
}
EXPORT_SYMBOL(of_get_mac_address);

36
target/linux/ramips/patches-4.3/0600-net-mediatek-add-of_get_mac_address_mtd-support.patch
View file

@ -1,36 +0,0 @@
From fce0d89383e0a2a694723989da608df1a464bae4 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Sun, 13 Dec 2015 17:45:19 +0100
Subject: [PATCH 1/2] net: mediatek: add of_get_mac_address_mtd() support
Signed-off-by: John Crispin <blogic@openwrt.org>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index fb435fa..9999768 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1273,7 +1273,6 @@ static int __init fe_init(struct net_device *dev)
{
struct fe_priv *priv = netdev_priv(dev);
struct device_node *port;
- const char *mac_addr;
int err;
priv->soc->reset_fe();
@@ -1281,9 +1280,7 @@ static int __init fe_init(struct net_device *dev)
if (priv->soc->switch_init)
priv->soc->switch_init(priv);
- mac_addr = of_get_mac_address(priv->device->of_node);
- if (mac_addr)
- ether_addr_copy(dev->dev_addr, mac_addr);
+ of_get_mac_address_mtd(priv->device->of_node, dev->dev_addr);
/*If the mac address is invalid, use random mac address */
if (!is_valid_ether_addr(dev->dev_addr)) {
--
1.7.10.4