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net: phy: provide phy_resume/phy_suspend helpers

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This adds helper functions to resume and suspend a given phy_device
by calling the corresponding driver callbacks if available.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sebastian Hesselbarth 2013-12-13 10:20:27 +01:00 committed by David S. Miller
parent 0898b448b3
commit 481b5d938b
2 changed files with 26 additions and 0 deletions
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24
drivers/net/phy/phy_device.c
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@ -679,6 +679,30 @@ void phy_detach(struct phy_device *phydev)
} }
EXPORT_SYMBOL(phy_detach); EXPORT_SYMBOL(phy_detach);
int phy_suspend(struct phy_device *phydev)
{
struct phy_driver *phydrv = to_phy_driver(phydev->dev.driver);
struct ethtool_wolinfo wol;
/* If the device has WOL enabled, we cannot suspend the PHY */
wol.cmd = ETHTOOL_GWOL;
phy_ethtool_get_wol(phydev, &wol);
if (wol.wolopts)
return -EBUSY;
if (phydrv->suspend)
return phydrv->suspend(phydev);
return 0;
}
int phy_resume(struct phy_device *phydev)
{
struct phy_driver *phydrv = to_phy_driver(phydev->dev.driver);
if (phydrv->resume)
return phydrv->resume(phydev);
return 0;
}
/* Generic PHY support and helper functions */ /* Generic PHY support and helper functions */

2
include/linux/phy.h
View File

@ -548,6 +548,8 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45); struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45);
int phy_device_register(struct phy_device *phy); int phy_device_register(struct phy_device *phy);
int phy_init_hw(struct phy_device *phydev); int phy_init_hw(struct phy_device *phydev);
int phy_suspend(struct phy_device *phydev);
int phy_resume(struct phy_device *phydev);
struct phy_device * phy_attach(struct net_device *dev, struct phy_device * phy_attach(struct net_device *dev,
const char *bus_id, phy_interface_t interface); const char *bus_id, phy_interface_t interface);
struct phy_device *phy_find_first(struct mii_bus *bus); struct phy_device *phy_find_first(struct mii_bus *bus);