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net: phy: introduce genphy_c45_pma_baset1_read_master_slave()

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Move baset1 specific part of genphy_c45_read_pma() code to
separate function to make it reusable by PHY drivers.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Oleksij Rempel 2022-05-06 06:23:54 +02:00 committed by David S. Miller
parent a04dd88f77
commit b9a366f3d8
2 changed files with 26 additions and 6 deletions
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31
drivers/net/phy/phy-c45.c
View file

@ -550,6 +550,30 @@ int genphy_c45_read_lpa(struct phy_device *phydev)
}
EXPORT_SYMBOL_GPL(genphy_c45_read_lpa);
/**
* genphy_c45_pma_baset1_read_master_slave - read forced master/slave
* configuration
* @phydev: target phy_device struct
*/
int genphy_c45_pma_baset1_read_master_slave(struct phy_device *phydev)
{
int val;
phydev->master_slave_state = MASTER_SLAVE_STATE_UNKNOWN;
val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_PMD_BT1_CTRL);
if (val < 0)
return val;
if (val & MDIO_PMA_PMD_BT1_CTRL_CFG_MST)
phydev->master_slave_state = MASTER_SLAVE_STATE_MASTER;
else
phydev->master_slave_state = MASTER_SLAVE_STATE_SLAVE;
return 0;
}
EXPORT_SYMBOL_GPL(genphy_c45_pma_baset1_read_master_slave);
/**
* genphy_c45_read_pma - read link speed etc from PMA
* @phydev: target phy_device struct
@ -591,14 +615,9 @@ int genphy_c45_read_pma(struct phy_device *phydev)
phydev->duplex = DUPLEX_FULL;
if (genphy_c45_baset1_able(phydev)) {
val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_PMD_BT1_CTRL);
val = genphy_c45_pma_baset1_read_master_slave(phydev);
if (val < 0)
return val;
if (MDIO_PMA_PMD_BT1_CTRL_CFG_MST)
phydev->master_slave_state = MASTER_SLAVE_STATE_MASTER;
else
phydev->master_slave_state = MASTER_SLAVE_STATE_SLAVE;
}
return 0;

1
include/linux/phy.h
View file

@ -1619,6 +1619,7 @@ int genphy_c45_an_config_aneg(struct phy_device *phydev);
int genphy_c45_an_disable_aneg(struct phy_device *phydev);
int genphy_c45_read_mdix(struct phy_device *phydev);
int genphy_c45_pma_read_abilities(struct phy_device *phydev);
int genphy_c45_pma_baset1_read_master_slave(struct phy_device *phydev);
int genphy_c45_read_status(struct phy_device *phydev);
int genphy_c45_config_aneg(struct phy_device *phydev);
int genphy_c45_loopback(struct phy_device *phydev, bool enable);