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net: phy: micrel: Add PHY Auto/MDI/MDI-X set driver for KSZ9131

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Add support for MDI-X status and configuration for KSZ9131 chips

Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Raju Lakkaraju 2022-10-24 13:55:16 +05:30 committed by Jakub Kicinski
parent cdc0454025
commit b64e6a8794
1 changed files with 77 additions and 0 deletions
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77
drivers/net/phy/micrel.c
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@ -1295,6 +1295,81 @@ static int ksz9131_config_init(struct phy_device *phydev)
return 0;
}
#define MII_KSZ9131_AUTO_MDIX 0x1C
#define MII_KSZ9131_AUTO_MDI_SET BIT(7)
#define MII_KSZ9131_AUTO_MDIX_SWAP_OFF BIT(6)
static int ksz9131_mdix_update(struct phy_device *phydev)
{
int ret;
ret = phy_read(phydev, MII_KSZ9131_AUTO_MDIX);
if (ret < 0)
return ret;
if (ret & MII_KSZ9131_AUTO_MDIX_SWAP_OFF) {
if (ret & MII_KSZ9131_AUTO_MDI_SET)
phydev->mdix_ctrl = ETH_TP_MDI;
else
phydev->mdix_ctrl = ETH_TP_MDI_X;
} else {
phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
}
if (ret & MII_KSZ9131_AUTO_MDI_SET)
phydev->mdix = ETH_TP_MDI;
else
phydev->mdix = ETH_TP_MDI_X;
return 0;
}
static int ksz9131_config_mdix(struct phy_device *phydev, u8 ctrl)
{
u16 val;
switch (ctrl) {
case ETH_TP_MDI:
val = MII_KSZ9131_AUTO_MDIX_SWAP_OFF |
MII_KSZ9131_AUTO_MDI_SET;
break;
case ETH_TP_MDI_X:
val = MII_KSZ9131_AUTO_MDIX_SWAP_OFF;
break;
case ETH_TP_MDI_AUTO:
val = 0;
break;
default:
return 0;
}
return phy_modify(phydev, MII_KSZ9131_AUTO_MDIX,
MII_KSZ9131_AUTO_MDIX_SWAP_OFF |
MII_KSZ9131_AUTO_MDI_SET, val);
}
static int ksz9131_read_status(struct phy_device *phydev)
{
int ret;
ret = ksz9131_mdix_update(phydev);
if (ret < 0)
return ret;
return genphy_read_status(phydev);
}
static int ksz9131_config_aneg(struct phy_device *phydev)
{
int ret;
ret = ksz9131_config_mdix(phydev, phydev->mdix_ctrl);
if (ret)
return ret;
return genphy_config_aneg(phydev);
}
#define KSZ8873MLL_GLOBAL_CONTROL_4 0x06
#define KSZ8873MLL_GLOBAL_CONTROL_4_DUPLEX BIT(6)
#define KSZ8873MLL_GLOBAL_CONTROL_4_SPEED BIT(4)
@ -3304,6 +3379,8 @@ static struct phy_driver ksphy_driver[] = {
.probe = kszphy_probe,
.config_init = ksz9131_config_init,
.config_intr = kszphy_config_intr,
.config_aneg = ksz9131_config_aneg,
.read_status = ksz9131_read_status,
.handle_interrupt = kszphy_handle_interrupt,
.get_sset_count = kszphy_get_sset_count,
.get_strings = kszphy_get_strings,