diff options
| author | Nick Bowler <nbowler@elliptictech.com> | 2012-11-07 06:20:34 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-11-09 16:38:15 -0500 |
| commit | 56277f40d73f12d9ffb12b5a6bd7e0ad1f2284b3 (patch) | |
| tree | 75e5fe8498c57e8d7863dfd1b0146e5eec04fcb7 /drivers/net/phy/mdio_bus.c | |
| parent | b1ead1aea1d7e3c260d896943056453717577525 (diff) | |
phylib: mdio: Add sysfs attribute for PHY identifiers.
This adds a phy_id sysfs attribute to MDIO devices, containing the
32-bit PHY identifier reported by the device. This attribute can
be useful when debugging problems related to phy drivers. Other
enumerable buses already have similar attributes.
Signed-off-by: Nick Bowler <nbowler@elliptictech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/mdio_bus.c')
| -rw-r--r-- | drivers/net/phy/mdio_bus.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index c1ef3000ea60..044b5326459f 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -431,10 +431,24 @@ static struct dev_pm_ops mdio_bus_pm_ops = { #endif /* CONFIG_PM */ +static ssize_t +phy_id_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct phy_device *phydev = to_phy_device(dev); + + return sprintf(buf, "0x%.8lx\n", (unsigned long)phydev->phy_id); +} + +static struct device_attribute mdio_dev_attrs[] = { + __ATTR_RO(phy_id), + __ATTR_NULL +}; + struct bus_type mdio_bus_type = { .name = "mdio_bus", .match = mdio_bus_match, .pm = MDIO_BUS_PM_OPS, + .dev_attrs = mdio_dev_attrs, }; EXPORT_SYMBOL(mdio_bus_type); |