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authorGiuseppe Cavallaro <peppe.cavallaro@st.com>2008-11-28 16:24:56 -0800
committerDavid S. Miller <davem@davemloft.net>2008-11-28 16:24:56 -0800
commit0f0ca340e57bd7446855fefd07a64249acf81223 (patch)
tree9a3af0f86f8bcce9eb86a38bf4dd5f4a2c5da2d1 /drivers/net/phy/mdio_bus.c
parent914804b95caa61c633431262044034ab05c78ba4 (diff)
downloadlinux-linaro-stable-0f0ca340e57bd7446855fefd07a64249acf81223.tar.gz
phy: power management support
This patch adds the power management support into the physical abstraction layer. Suspend and resume functions respectively turns on/off the bit 11 into the PHY Basic mode control register. Generic PHY device starts supporting PM. In order to support the wake-on LAN and avoid to put in power down the PHY device, the MDIO is aware of what the Ethernet device wants to do. Voluntary, no CONFIG_PM defines were added into the sources. Also generic suspend/resume functions are exported to allow other drivers use them (such as genphy_config_aneg etc.). Within the phy_driver_register function, we need to remove the memset. It overrides the device driver owner and it is not good. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.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.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 868812ff6de8..8755d8cd4166 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -284,9 +284,12 @@ static int mdio_bus_suspend(struct device * dev, pm_message_t state)
{
int ret = 0;
struct device_driver *drv = dev->driver;
+ struct phy_driver *phydrv = to_phy_driver(drv);
+ struct phy_device *phydev = to_phy_device(dev);
- if (drv && drv->suspend)
- ret = drv->suspend(dev, state);
+ if ((!device_may_wakeup(phydev->dev.parent)) &&
+ (phydrv && phydrv->suspend))
+ ret = phydrv->suspend(phydev);
return ret;
}
@@ -295,9 +298,12 @@ static int mdio_bus_resume(struct device * dev)
{
int ret = 0;
struct device_driver *drv = dev->driver;
+ struct phy_driver *phydrv = to_phy_driver(drv);
+ struct phy_device *phydev = to_phy_device(dev);
- if (drv && drv->resume)
- ret = drv->resume(dev);
+ if ((!device_may_wakeup(phydev->dev.parent)) &&
+ (phydrv && phydrv->resume))
+ ret = phydrv->resume(phydev);
return ret;
}