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of: add of_mdio_find_device() api

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Add a helper function which finds the mdio_device structure given a
device tree node. This is helpful for finding the PCS device based on a
DTS node but managing it as a mdio_device instead of a phy_device.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King
2020-09-23 18:41:22 +03:00
committed by David S. Miller
parent e7e95c9003
commit b5b6775d72
2 changed files with 35 additions and 9 deletions
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6
include/linux/of_mdio.h
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@@ -17,6 +17,7 @@ bool of_mdiobus_child_is_phy(struct device_node *child);
int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np);
int devm_of_mdiobus_register(struct device *dev, struct mii_bus *mdio,
struct device_node *np);
struct mdio_device *of_mdio_find_device(struct device_node *np);
struct phy_device *of_phy_find_device(struct device_node *phy_np);
struct phy_device *
of_phy_connect(struct net_device *dev, struct device_node *phy_np,
@@ -74,6 +75,11 @@ static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *
return mdiobus_register(mdio);
}
static inline struct mdio_device *of_mdio_find_device(struct device_node *np)
{
return NULL;
}
static inline struct phy_device *of_phy_find_device(struct device_node *phy_np)
{
return NULL;