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mdio: Add support for mdio drivers.

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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 <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Andrew Lunn 2016-01-06 20:11:26 +01:00 • committed by David S. Miller
commit a9049e0c51
7 changed files with 286 additions and 17 deletions
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33
drivers/of/of_mdio.c
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@ -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)