diff options
Diffstat (limited to 'drivers/net/gianfar_mii.c')
| -rw-r--r-- | drivers/net/gianfar_mii.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/gianfar_mii.c b/drivers/net/gianfar_mii.c index bf73eea..0e2595d2 100644 --- a/drivers/net/gianfar_mii.c +++ b/drivers/net/gianfar_mii.c @@ -269,6 +269,27 @@ static struct device_driver gianfar_mdio_driver = { .remove = gfar_mdio_remove, }; +static int match_mdio_bus(struct device *dev, void *data) +{ + const struct gfar_private *priv = data; + const struct platform_device *pdev = to_platform_device(dev); + + return !strcmp(pdev->name, gianfar_mdio_driver.name) && + pdev->id == priv->einfo->mdio_bus; +} + +/* Given a gfar_priv structure, find the mii_bus controlled by this device (not + * necessarily the same as the bus the gfar's PHY is on), if one exists. + * Normally only the first gianfar controls a mii_bus. */ +struct mii_bus *gfar_get_miibus(const struct gfar_private *priv) +{ + /*const*/ struct device *d; + + d = bus_find_device(gianfar_mdio_driver.bus, NULL, (void *)priv, + match_mdio_bus); + return d ? dev_get_drvdata(d) : NULL; +} + int __init gfar_mdio_init(void) { return driver_register(&gianfar_mdio_driver); |
