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Marvell phy: add configuration of autonegociation for fiber link.

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To be correctly initilized, the fiber interface needs
to be configured via autonegociation registers which use
some customs options or registers.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Charles-Antoine Couret <charles-antoine.couret@nexvision.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Charles-Antoine Couret 2016-07-19 11:13:12 +02:00 committed by David S. Miller
parent 2170fef78a
commit 78301ebe9b
1 changed files with 109 additions and 2 deletions
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111
drivers/net/phy/marvell.c
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@ -493,15 +493,122 @@ static int m88e1318_config_aneg(struct phy_device *phydev)
return m88e1121_config_aneg(phydev);
}
/**
* ethtool_adv_to_fiber_adv_t
* @ethadv: the ethtool advertisement settings
*
* A small helper function that translates ethtool advertisement
* settings to phy autonegotiation advertisements for the
* MII_ADV register for fiber link.
*/
static inline u32 ethtool_adv_to_fiber_adv_t(u32 ethadv)
{
u32 result = 0;
if (ethadv & ADVERTISED_1000baseT_Half)
result |= ADVERTISE_FIBER_1000HALF;
if (ethadv & ADVERTISED_1000baseT_Full)
result |= ADVERTISE_FIBER_1000FULL;
if ((ethadv & ADVERTISE_PAUSE_ASYM) && (ethadv & ADVERTISE_PAUSE_CAP))
result |= LPA_PAUSE_ASYM_FIBER;
else if (ethadv & ADVERTISE_PAUSE_CAP)
result |= (ADVERTISE_PAUSE_FIBER
& (~ADVERTISE_PAUSE_ASYM_FIBER));
return result;
}
/**
* marvell_config_aneg_fiber - restart auto-negotiation or write BMCR
* @phydev: target phy_device struct
*
* Description: If auto-negotiation is enabled, we configure the
* advertising, and then restart auto-negotiation. If it is not
* enabled, then we write the BMCR. Adapted for fiber link in
* some Marvell's devices.
*/
static int marvell_config_aneg_fiber(struct phy_device *phydev)
{
int changed = 0;
int err;
int adv, oldadv;
u32 advertise;
if (phydev->autoneg != AUTONEG_ENABLE)
return genphy_setup_forced(phydev);
/* Only allow advertising what this PHY supports */
phydev->advertising &= phydev->supported;
advertise = phydev->advertising;
/* Setup fiber advertisement */
adv = phy_read(phydev, MII_ADVERTISE);
if (adv < 0)
return adv;
oldadv = adv;
adv &= ~(ADVERTISE_FIBER_1000HALF | ADVERTISE_FIBER_1000FULL
| LPA_PAUSE_FIBER);
adv |= ethtool_adv_to_fiber_adv_t(advertise);
if (adv != oldadv) {
err = phy_write(phydev, MII_ADVERTISE, adv);
if (err < 0)
return err;
changed = 1;
}
if (changed == 0) {
/* Advertisement hasn't changed, but maybe aneg was never on to
* begin with? Or maybe phy was isolated?
*/
int ctl = phy_read(phydev, MII_BMCR);
if (ctl < 0)
return ctl;
if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE))
changed = 1; /* do restart aneg */
}
/* Only restart aneg if we are advertising something different
* than we were before.
*/
if (changed > 0)
changed = genphy_restart_aneg(phydev);
return changed;
}
static int m88e1510_config_aneg(struct phy_device *phydev)
{
int err;
err = phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_COPPER);
if (err < 0)
goto error;
/* Configure the copper link first */
err = m88e1318_config_aneg(phydev);
if (err < 0)
return err;
goto error;
return 0;
/* Then the fiber link */
err = phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_FIBER);
if (err < 0)
goto error;
err = marvell_config_aneg_fiber(phydev);
if (err < 0)
goto error;
return phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_COPPER);
error:
phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_M1111_COPPER);
return err;
}
static int marvell_config_init(struct phy_device *phydev)