netdev/phy/of: Add more methods for binding PHY devices to drivers.

Allow PHY drivers to supply their own device matching function
(match_phy_device()), or to be matched OF compatible properties.

PHYs following IEEE802.3 clause 45 have more than one device
identifier constants, which breaks the default device matching code.
Other 10G PHYs don't follow the standard manufacturer/device
identifier register layout standards, but they do use the standard
MDIO bus protocols for register access.  Both of these require
adjustments to the PHY driver to device matching code.

If the there is an of_node associated with such a PHY, we can match it
to its driver using the "compatible" properties, just as we do with
certain platform devices.  If the "compatible" property match fails,
first check if there is a driver supplied matching function, and if
not fall back to the existing identifier matching rules.

Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Daney 2012-06-27 07:33:37 +00:00 committed by David S. Miller
parent 6bd47ac2e4
commit a30e2c1891
2 changed files with 13 additions and 0 deletions

View File

@ -25,6 +25,7 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/of_device.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
@ -308,6 +309,12 @@ static int mdio_bus_match(struct device *dev, struct device_driver *drv)
struct phy_device *phydev = to_phy_device(dev);
struct phy_driver *phydrv = to_phy_driver(drv);
if (of_driver_match_device(dev, drv))
return 1;
if (phydrv->match_phy_device)
return phydrv->match_phy_device(phydev);
return ((phydrv->phy_id & phydrv->phy_id_mask) ==
(phydev->phy_id & phydrv->phy_id_mask));
}

View File

@ -426,6 +426,12 @@ struct phy_driver {
/* Clears up any memory if needed */
void (*remove)(struct phy_device *phydev);
/* Returns true if this is a suitable driver for the given
* phydev. If NULL, matching is based on phy_id and
* phy_id_mask.
*/
int (*match_phy_device)(struct phy_device *phydev);
/* Handles ethtool queries for hardware time stamping. */
int (*ts_info)(struct phy_device *phydev, struct ethtool_ts_info *ti);