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phy: Add API for {un}registering an mdio device to a bus.

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Rather than have drivers directly manipulate the mii_bus structure,
provide and API for registering and unregistering devices on an MDIO
bus, and performing lookups.

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>
This commit is contained in:
Andrew Lunn
2016-01-06 20:11:18 +01:00
committed by David S. Miller
parent 801a8ef54e
commit 7f854420fb
17 changed files with 98 additions and 49 deletions
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21
drivers/net/phy/phy_device.c
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@@ -166,6 +166,7 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
mdiodev->dev.bus = &mdio_bus_type;
mdiodev->bus = bus;
mdiodev->addr = addr;
mdiodev->flags = MDIO_DEVICE_FLAG_PHY;
dev->speed = 0;
dev->duplex = -1;
@@ -383,10 +384,9 @@ int phy_device_register(struct phy_device *phydev)
{
int err;
/* Don't register a phy if one is already registered at this address */
if (phydev->mdio.bus->phy_map[phydev->mdio.addr])
return -EINVAL;
phydev->mdio.bus->phy_map[phydev->mdio.addr] = phydev;
err = mdiobus_register_device(&phydev->mdio);
if (err)
return err;
/* Run all of the fixups for this PHY */
err = phy_scan_fixups(phydev);
@@ -404,7 +404,7 @@ int phy_device_register(struct phy_device *phydev)
return 0;
out:
phydev->mdio.bus->phy_map[phydev->mdio.addr] = NULL;
mdiobus_unregister_device(&phydev->mdio);
return err;
}
EXPORT_SYMBOL(phy_device_register);
@@ -419,11 +419,8 @@ EXPORT_SYMBOL(phy_device_register);
*/
void phy_device_remove(struct phy_device *phydev)
{
struct mii_bus *bus = phydev->mdio.bus;
int addr = phydev->mdio.addr;
device_del(&phydev->mdio.dev);
bus->phy_map[addr] = NULL;
mdiobus_unregister_device(&phydev->mdio);
}
EXPORT_SYMBOL(phy_device_remove);
@@ -433,11 +430,13 @@ EXPORT_SYMBOL(phy_device_remove);
*/
struct phy_device *phy_find_first(struct mii_bus *bus)
{
struct phy_device *phydev;
int addr;
for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
if (bus->phy_map[addr])
return bus->phy_map[addr];
phydev = mdiobus_get_phy(bus, addr);
if (phydev)
return phydev;
}
return NULL;
}