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>
{
int ret = 0;
struct device_driver *drv = dev->driver;
{
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);
{
int ret = 0;
struct device_driver *drv = dev->driver;
{
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);
+int genphy_suspend(struct phy_device *phydev)
+{
+ int value;
+
+ mutex_lock(&phydev->lock);
+
+ value = phy_read(phydev, MII_BMCR);
+ phy_write(phydev, MII_BMCR, (value | BMCR_PDOWN));
+
+ mutex_unlock(&phydev->lock);
+
+ return 0;
+}
+EXPORT_SYMBOL(genphy_suspend);
+int genphy_resume(struct phy_device *phydev)
+{
+ int value;
+
+ mutex_lock(&phydev->lock);
+
+ value = phy_read(phydev, MII_BMCR);
+ phy_write(phydev, MII_BMCR, (value & ~BMCR_PDOWN));
+
+ mutex_unlock(&phydev->lock);
+
+ return 0;
+}
+EXPORT_SYMBOL(genphy_resume);
/**
* phy_probe - probe and init a PHY device
/**
* phy_probe - probe and init a PHY device
- memset(&new_driver->driver, 0, sizeof(new_driver->driver));
new_driver->driver.name = new_driver->name;
new_driver->driver.bus = &mdio_bus_type;
new_driver->driver.probe = phy_probe;
new_driver->driver.name = new_driver->name;
new_driver->driver.bus = &mdio_bus_type;
new_driver->driver.probe = phy_probe;
.features = 0,
.config_aneg = genphy_config_aneg,
.read_status = genphy_read_status,
.features = 0,
.config_aneg = genphy_config_aneg,
.read_status = genphy_read_status,
+ .suspend = genphy_suspend,
+ .resume = genphy_resume,
.driver = {.owner= THIS_MODULE, },
};
.driver = {.owner= THIS_MODULE, },
};
int genphy_config_aneg(struct phy_device *phydev);
int genphy_update_link(struct phy_device *phydev);
int genphy_read_status(struct phy_device *phydev);
int genphy_config_aneg(struct phy_device *phydev);
int genphy_update_link(struct phy_device *phydev);
int genphy_read_status(struct phy_device *phydev);
+int genphy_suspend(struct phy_device *phydev);
+int genphy_resume(struct phy_device *phydev);
void phy_driver_unregister(struct phy_driver *drv);
int phy_driver_register(struct phy_driver *new_driver);
void phy_prepare_link(struct phy_device *phydev,
void phy_driver_unregister(struct phy_driver *drv);
int phy_driver_register(struct phy_driver *new_driver);
void phy_prepare_link(struct phy_device *phydev,