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net: phy: expose PHY device interface mode 

Expose the PHY device interface mode through sysfs since this is an
useful piece of information for knowing how the attached networking
device will have configured its transmit/receive path.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-02-11 17:27:40 -08:00 committed by David S. Miller
parent 8a2fe56e88
commit 3d055d8d1c
2 changed files with 20 additions and 0 deletions
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10
Documentation/ABI/testing/sysfs-bus-mdio
View File

@ -7,3 +7,13 @@ Description:
by the device during bus enumeration, encoded in hexadecimal.
This ID is used to match the device with the appropriate
driver.
What: /sys/bus/mdio_bus/devices/.../phy_interface
Date: February 2014
KernelVersion: 3.15
Contact: netdev@vger.kernel.org
Description:
This attribute contains the PHY interface as configured by the
Ethernet driver during bus enumeration, encoded in string.
This interface mode is used to configure the Ethernet MAC with the
appropriate mode for its data lines to the PHY hardware.

10
drivers/net/phy/mdio_bus.c
View File

@ -432,8 +432,18 @@ phy_id_show(struct device *dev, struct device_attribute *attr, char *buf)
}
static DEVICE_ATTR_RO(phy_id);
static ssize_t
phy_interface_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct phy_device *phydev = to_phy_device(dev);
return sprintf(buf, "%s\n", phy_modes(phydev->interface));
}
static DEVICE_ATTR_RO(phy_interface);
static struct attribute *mdio_dev_attrs[] = {
&dev_attr_phy_id.attr,
&dev_attr_phy_interface.attr,
NULL,
};
ATTRIBUTE_GROUPS(mdio_dev);