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authorAndrew Lunn <andrew@lunn.ch>2016-01-06 22:11:21 +0300
committerDavid S. Miller <davem@davemloft.net>2016-01-07 22:31:27 +0300
commitbc87922ff59d364a33e9bce0febdef21a7fbd2af (patch)
treec7179d7f4969f2006e81cd7512c5d0aac8392de2 /drivers/net/phy/mdio_bus.c
parent0071f56e46dadb88dc3ad1f8d9cf9c3ae014735d (diff)
downloadlinux-bc87922ff59d364a33e9bce0febdef21a7fbd2af.tar.xz
phy: Move PHY PM operations into phy_device
The MDIO PM operations are really PHY device PM operations. So move them into phy_device. This will be needed when we support devices on the mdio bus which are not PHYs. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.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.c83
1 files changed, 10 insertions, 73 deletions
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index e6dddb086265..65ff8199bd09 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -561,95 +561,32 @@ static int mdio_bus_match(struct device *dev, struct device_driver *drv)
}
#ifdef CONFIG_PM
-
-static bool mdio_bus_phy_may_suspend(struct phy_device *phydev)
-{
- struct device_driver *drv = phydev->mdio.dev.driver;
- struct phy_driver *phydrv = to_phy_driver(drv);
- struct net_device *netdev = phydev->attached_dev;
-
- if (!drv || !phydrv->suspend)
- return false;
-
- /* PHY not attached? May suspend if the PHY has not already been
- * suspended as part of a prior call to phy_disconnect() ->
- * phy_detach() -> phy_suspend() because the parent netdev might be the
- * MDIO bus driver and clock gated at this point.
- */
- if (!netdev)
- return !phydev->suspended;
-
- /* Don't suspend PHY if the attched netdev parent may wakeup.
- * The parent may point to a PCI device, as in tg3 driver.
- */
- if (netdev->dev.parent && device_may_wakeup(netdev->dev.parent))
- return false;
-
- /* Also don't suspend PHY if the netdev itself may wakeup. This
- * is the case for devices w/o underlaying pwr. mgmt. aware bus,
- * e.g. SoC devices.
- */
- if (device_may_wakeup(&netdev->dev))
- return false;
-
- return true;
-}
-
static int mdio_bus_suspend(struct device *dev)
{
- struct phy_device *phydev = to_phy_device(dev);
+ struct mdio_device *mdio = to_mdio_device(dev);
- /* We must stop the state machine manually, otherwise it stops out of
- * control, possibly with the phydev->lock held. Upon resume, netdev
- * may call phy routines that try to grab the same lock, and that may
- * lead to a deadlock.
- */
- if (phydev->attached_dev && phydev->adjust_link)
- phy_stop_machine(phydev);
-
- if (!mdio_bus_phy_may_suspend(phydev))
- return 0;
+ if (mdio->pm_ops && mdio->pm_ops->suspend)
+ return mdio->pm_ops->suspend(dev);
- return phy_suspend(phydev);
+ return 0;
}
static int mdio_bus_resume(struct device *dev)
{
- struct phy_device *phydev = to_phy_device(dev);
- int ret;
-
- if (!mdio_bus_phy_may_suspend(phydev))
- goto no_resume;
+ struct mdio_device *mdio = to_mdio_device(dev);
- ret = phy_resume(phydev);
- if (ret < 0)
- return ret;
-
-no_resume:
- if (phydev->attached_dev && phydev->adjust_link)
- phy_start_machine(phydev);
+ if (mdio->pm_ops && mdio->pm_ops->resume)
+ return mdio->pm_ops->resume(dev);
return 0;
}
static int mdio_bus_restore(struct device *dev)
{
- struct phy_device *phydev = to_phy_device(dev);
- struct net_device *netdev = phydev->attached_dev;
- int ret;
-
- if (!netdev)
- return 0;
-
- ret = phy_init_hw(phydev);
- if (ret < 0)
- return ret;
-
- /* The PHY needs to renegotiate. */
- phydev->link = 0;
- phydev->state = PHY_UP;
+ struct mdio_device *mdio = to_mdio_device(dev);
- phy_start_machine(phydev);
+ if (mdio->pm_ops && mdio->pm_ops->restore)
+ return mdio->pm_ops->restore(dev);
return 0;
}