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net: phy: bcm7xxx: Add support for downshift/Wirespeed

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Add support for configuring the downshift/Wirespeed enable/disable
toggles and specify a link retry value ranging from 1 to 9. Since the
integrated BCM7xxx have issues when wirespeed is enabled and EEE is also
enabled, we do disable EEE if wirespeed is enabled.

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 2016-11-22 11:40:57 -08:00 committed by David S. Miller
parent 99cec8a4dd
commit db88816ba2
1 changed files with 50 additions and 1 deletions
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51
drivers/net/phy/bcm7xxx.c
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@ -167,6 +167,7 @@ static int bcm7xxx_28nm_config_init(struct phy_device *phydev)
{
u8 rev = PHY_BRCM_7XXX_REV(phydev->dev_flags);
u8 patch = PHY_BRCM_7XXX_PATCH(phydev->dev_flags);
u8 count;
int ret = 0;
pr_info_once("%s: %s PHY revision: 0x%02x, patch: %d\n",
@ -199,7 +200,12 @@ static int bcm7xxx_28nm_config_init(struct phy_device *phydev)
if (ret)
return ret;
ret = bcm_phy_set_eee(phydev, true);
ret = bcm_phy_downshift_get(phydev, &count);
if (ret)
return ret;
/* Only enable EEE if Wirespeed/downshift is disabled */
ret = bcm_phy_set_eee(phydev, count == DOWNSHIFT_DEV_DISABLE);
if (ret)
return ret;
@ -303,6 +309,47 @@ static int bcm7xxx_suspend(struct phy_device *phydev)
return 0;
}
static int bcm7xxx_28nm_get_tunable(struct phy_device *phydev,
struct ethtool_tunable *tuna,
void *data)
{
switch (tuna->id) {
case ETHTOOL_PHY_DOWNSHIFT:
return bcm_phy_downshift_get(phydev, (u8 *)data);
default:
return -EOPNOTSUPP;
}
}
static int bcm7xxx_28nm_set_tunable(struct phy_device *phydev,
struct ethtool_tunable *tuna,
const void *data)
{
u8 count = *(u8 *)data;
int ret;
switch (tuna->id) {
case ETHTOOL_PHY_DOWNSHIFT:
ret = bcm_phy_downshift_set(phydev, count);
break;
default:
return -EOPNOTSUPP;
}
if (ret)
return ret;
/* Disable EEE advertisment since this prevents the PHY
* from successfully linking up, trigger auto-negotiation restart
* to let the MAC decide what to do.
*/
ret = bcm_phy_set_eee(phydev, count == DOWNSHIFT_DEV_DISABLE);
if (ret)
return ret;
return genphy_restart_aneg(phydev);
}
#define BCM7XXX_28NM_GPHY(_oui, _name) \
{ \
.phy_id = (_oui), \
@ -315,6 +362,8 @@ static int bcm7xxx_suspend(struct phy_device *phydev)
.config_aneg = genphy_config_aneg, \
.read_status = genphy_read_status, \
.resume = bcm7xxx_28nm_resume, \
.get_tunable = bcm7xxx_28nm_get_tunable, \
.set_tunable = bcm7xxx_28nm_set_tunable, \
}
#define BCM7XXX_40NM_EPHY(_oui, _name) \