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net/faraday: Helper functions to create or destroy MDIO interface

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This introduces two helper functions to create or destroy MDIO
interface. No logical changes introduced except the proper MDIO
names are given when having more than one MDIO bus.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Acked-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gavin Shan 2016-07-19 11:54:21 +10:00 committed by David S. Miller
parent 7a82ecf4cf
commit eb4181849f
1 changed files with 60 additions and 35 deletions
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95
drivers/net/ethernet/faraday/ftgmac100.c
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@ -1146,6 +1146,60 @@ static const struct net_device_ops ftgmac100_netdev_ops = {
.ndo_do_ioctl = ftgmac100_do_ioctl,
};
static int ftgmac100_setup_mdio(struct net_device *netdev)
{
struct ftgmac100 *priv = netdev_priv(netdev);
struct platform_device *pdev = to_platform_device(priv->dev);
int i, err = 0;
/* initialize mdio bus */
priv->mii_bus = mdiobus_alloc();
if (!priv->mii_bus)
return -EIO;
priv->mii_bus->name = "ftgmac100_mdio";
snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%s-%d",
pdev->name, pdev->id);
priv->mii_bus->priv = priv->netdev;
priv->mii_bus->read = ftgmac100_mdiobus_read;
priv->mii_bus->write = ftgmac100_mdiobus_write;
for (i = 0; i < PHY_MAX_ADDR; i++)
priv->mii_bus->irq[i] = PHY_POLL;
err = mdiobus_register(priv->mii_bus);
if (err) {
dev_err(priv->dev, "Cannot register MDIO bus!\n");
goto err_register_mdiobus;
}
err = ftgmac100_mii_probe(priv);
if (err) {
dev_err(priv->dev, "MII Probe failed!\n");
goto err_mii_probe;
}
return 0;
err_mii_probe:
mdiobus_unregister(priv->mii_bus);
err_register_mdiobus:
mdiobus_free(priv->mii_bus);
return err;
}
static void ftgmac100_destroy_mdio(struct net_device *netdev)
{
struct ftgmac100 *priv = netdev_priv(netdev);
if (!netdev->phydev)
return;
phy_disconnect(netdev->phydev);
mdiobus_unregister(priv->mii_bus);
mdiobus_free(priv->mii_bus);
}
/******************************************************************************
* struct platform_driver functions
*****************************************************************************/
@ -1211,31 +1265,9 @@ static int ftgmac100_probe(struct platform_device *pdev)
priv->irq = irq;
/* initialize mdio bus */
priv->mii_bus = mdiobus_alloc();
if (!priv->mii_bus) {
err = -EIO;
goto err_alloc_mdiobus;
}
priv->mii_bus->name = "ftgmac100_mdio";
snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "ftgmac100_mii");
priv->mii_bus->priv = netdev;
priv->mii_bus->read = ftgmac100_mdiobus_read;
priv->mii_bus->write = ftgmac100_mdiobus_write;
err = mdiobus_register(priv->mii_bus);
if (err) {
dev_err(&pdev->dev, "Cannot register MDIO bus!\n");
goto err_register_mdiobus;
}
err = ftgmac100_mii_probe(priv);
if (err) {
dev_err(&pdev->dev, "MII Probe failed!\n");
goto err_mii_probe;
}
err = ftgmac100_setup_mdio(netdev);
if (err)
goto err_setup_mdio;
/* register network device */
err = register_netdev(netdev);
@ -1255,12 +1287,8 @@ static int ftgmac100_probe(struct platform_device *pdev)
return 0;
err_register_netdev:
phy_disconnect(netdev->phydev);
err_mii_probe:
mdiobus_unregister(priv->mii_bus);
err_register_mdiobus:
mdiobus_free(priv->mii_bus);
err_alloc_mdiobus:
ftgmac100_destroy_mdio(netdev);
err_setup_mdio:
iounmap(priv->base);
err_ioremap:
release_resource(priv->res);
@ -1280,10 +1308,7 @@ static int __exit ftgmac100_remove(struct platform_device *pdev)
priv = netdev_priv(netdev);
unregister_netdev(netdev);
phy_disconnect(netdev->phydev);
mdiobus_unregister(priv->mii_bus);
mdiobus_free(priv->mii_bus);
ftgmac100_destroy_mdio(netdev);
iounmap(priv->base);
release_resource(priv->res);