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of: mdio: export of_mdio_parse_addr

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Export of_mdio_parse_addr() which allows parsing a given Ethernet PHY
node MDIO address, verify it is within the allowed range, and return
its value. This is going to be useful for the DSA code which needs to
deal with multiple layers of MDIO buses.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2015-03-10 16:57:11 -07:00 committed by David S. Miller
parent d26ea6cc48
commit 33d6737761
2 changed files with 9 additions and 1 deletions
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3
drivers/of/of_mdio.c
View File

@ -88,7 +88,7 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *chi
return 0;
}
static int of_mdio_parse_addr(struct device *dev, const struct device_node *np)
int of_mdio_parse_addr(struct device *dev, const struct device_node *np)
{
u32 addr;
int ret;
@ -108,6 +108,7 @@ static int of_mdio_parse_addr(struct device *dev, const struct device_node *np)
return addr;
}
EXPORT_SYMBOL(of_mdio_parse_addr);
/**
* of_mdiobus_register - Register mii_bus and create PHYs from the device tree

7
include/linux/of_mdio.h
View File

@ -24,6 +24,7 @@ struct phy_device *of_phy_attach(struct net_device *dev,
phy_interface_t iface);
extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np);
extern int of_mdio_parse_addr(struct device *dev, const struct device_node *np);
#else /* CONFIG_OF */
static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
@ -60,6 +61,12 @@ static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np)
{
return NULL;
}
static inline int of_mdio_parse_addr(struct device *dev,
const struct device_node *np)
{
return -ENOSYS;
}
#endif /* CONFIG_OF */
#if defined(CONFIG_OF) && defined(CONFIG_FIXED_PHY)