diff options
| author | Andrew Lunn <andrew@lunn.ch> | 2016-01-06 22:11:26 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-01-07 22:31:27 +0300 |
| commit | a9049e0c513c4521dbfaa302af8ed08b3366b41f (patch) | |
| tree | c7791b09aee213f8241f366aa9b88c270803ebf9 /drivers/of | |
| parent | f89df3f381f1e1247ddccdf178f203c06fddf5ce (diff) | |
| download | linux-a9049e0c513c4521dbfaa302af8ed08b3366b41f.tar.xz | |
mdio: Add support for mdio drivers.
Not all devices on an MDIO bus are PHYs. Meaning not all MDIO drivers
are PHY drivers. Add support for generic MDIO drivers.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/of_mdio.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 6febe2df76f9..c0a8f84d92db 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -92,6 +92,37 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *chi return 0; } +static int of_mdiobus_register_device(struct mii_bus *mdio, + struct device_node *child, + u32 addr) +{ + struct mdio_device *mdiodev; + int rc; + + mdiodev = mdio_device_create(mdio, addr); + if (!mdiodev || IS_ERR(mdiodev)) + return 1; + + /* Associate the OF node with the device structure so it + * can be looked up later. + */ + of_node_get(child); + mdiodev->dev.of_node = child; + + /* All data is now stored in the mdiodev struct; register it. */ + rc = mdio_device_register(mdiodev); + if (rc) { + mdio_device_free(mdiodev); + of_node_put(child); + return 1; + } + + dev_dbg(&mdio->dev, "registered mdio device %s at address %i\n", + child->name, addr); + + return 0; +} + int of_mdio_parse_addr(struct device *dev, const struct device_node *np) { u32 addr; @@ -179,6 +210,8 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np) if (of_mdiobus_child_is_phy(child)) of_mdiobus_register_phy(mdio, child, addr); + else + of_mdiobus_register_device(mdio, child, addr); } if (!scanphys) |