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phy: add phy_interface_mode_is_8023z() helper

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Add and use phy_interface_mode_is_8023z() helper to identify the
interface modes that use 802.3z negotiation.  Use it in phylink's
phylink_mac_an_restart().

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King 2017-12-01 10:24:16 +00:00 committed by David S. Miller
parent b0e9fe1ba7
commit 365c1e64ad
2 changed files with 15 additions and 2 deletions
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3
drivers/net/phy/phylink.c
View File

@ -320,8 +320,7 @@ static void phylink_mac_config(struct phylink *pl,
static void phylink_mac_an_restart(struct phylink *pl)
{
if (pl->link_config.an_enabled &&
(pl->link_config.interface == PHY_INTERFACE_MODE_1000BASEX ||
pl->link_config.interface == PHY_INTERFACE_MODE_2500BASEX))
phy_interface_mode_is_8023z(pl->link_config.interface))
pl->ops->mac_an_restart(pl->netdev);
}

14
include/linux/phy.h
View File

@ -761,6 +761,20 @@ static inline bool phy_interface_mode_is_rgmii(phy_interface_t mode)
mode <= PHY_INTERFACE_MODE_RGMII_TXID;
};
/**
* phy_interface_mode_is_8023z() - does the phy interface mode use 802.3z
* negotiation
* @mode: one of &enum phy_interface_t
*
* Returns true if the phy interface mode uses the 16-bit negotiation
* word as defined in 802.3z. (See 802.3-2015 37.2.1 Config_Reg encoding)
*/
static inline bool phy_interface_mode_is_8023z(phy_interface_t mode)
{
return mode == PHY_INTERFACE_MODE_1000BASEX ||
mode == PHY_INTERFACE_MODE_2500BASEX;
}
/**
* phy_interface_is_rgmii - Convenience function for testing if a PHY interface
* is RGMII (all variants)