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net: phy: Add phy_interface_is_rgmii helper

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RGMII interfaces come in 4 different flavors that the PHY library needs
to care about: regular RGMII (no delays), RGMII with either RX or TX
delay, and both. In order to avoid errors of checking only for one type
of RGMII interface and miss the 3 others, introduce a convenience
function which tests for all values.

Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2015-05-26 12:19:58 -07:00 • committed by David S. Miller
commit e463d88c36
1 changed files with 11 additions and 0 deletions
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11
include/linux/phy.h
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@ -677,6 +677,17 @@ static inline bool phy_is_internal(struct phy_device *phydev)
return phydev->is_internal; return phydev->is_internal;
} }
/**
* phy_interface_is_rgmii - Convenience function for testing if a PHY interface
* is RGMII (all variants)
* @phydev: the phy_device struct
*/
static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
{
return phydev->interface >= PHY_INTERFACE_MODE_RGMII &&
phydev->interface <= PHY_INTERFACE_MODE_RGMII_TXID;
}
/** /**
* phy_write_mmd - Convenience function for writing a register * phy_write_mmd - Convenience function for writing a register
* on an MMD on a given PHY. * on an MMD on a given PHY.