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net: phy: marvell10g: add mdix control 

Add support for controlling the MDI-X state of the PHY.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King 2020-03-03 18:08:34 +00:00 committed by David S. Miller
parent e7c298854a
commit 8d8963c3db
1 changed files with 59 additions and 2 deletions
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61
drivers/net/phy/marvell10g.c
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@ -23,6 +23,7 @@
* link takes priority and the other port is completely locked out.
*/
#include <linux/ctype.h>
#include <linux/delay.h>
#include <linux/hwmon.h>
#include <linux/marvell_phy.h>
#include <linux/phy.h>
@ -39,6 +40,12 @@ enum {
MV_PCS_BASE_R = 0x1000,
MV_PCS_1000BASEX = 0x2000,
MV_PCS_CSCR1 = 0x8000,
MV_PCS_CSCR1_MDIX_MASK = 0x0060,
MV_PCS_CSCR1_MDIX_MDI = 0x0000,
MV_PCS_CSCR1_MDIX_MDIX = 0x0020,
MV_PCS_CSCR1_MDIX_AUTO = 0x0060,
MV_PCS_CSSR1 = 0x8008,
MV_PCS_CSSR1_SPD1_MASK = 0xc000,
MV_PCS_CSSR1_SPD1_SPD2 = 0xc000,
@ -216,6 +223,26 @@ static int mv3310_hwmon_probe(struct phy_device *phydev)
}
#endif
static int mv3310_reset(struct phy_device *phydev, u32 unit)
{
int retries, val, err;
err = phy_modify_mmd(phydev, MDIO_MMD_PCS, unit + MDIO_CTRL1,
MDIO_CTRL1_RESET, MDIO_CTRL1_RESET);
if (err < 0)
return err;
retries = 20;
do {
msleep(5);
val = phy_read_mmd(phydev, MDIO_MMD_PCS, unit + MDIO_CTRL1);
if (val < 0)
return val;
} while (val & MDIO_CTRL1_RESET && --retries);
return val & MDIO_CTRL1_RESET ? -ETIMEDOUT : 0;
}
static int mv3310_sfp_insert(void *upstream, const struct sfp_eeprom_id *id)
{
struct phy_device *phydev = upstream;
@ -316,6 +343,8 @@ static int mv3310_config_init(struct phy_device *phydev)
phydev->interface != PHY_INTERFACE_MODE_10GBASER)
return -ENODEV;
phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
return 0;
}
@ -345,14 +374,42 @@ static int mv3310_get_features(struct phy_device *phydev)
return 0;
}
static int mv3310_config_mdix(struct phy_device *phydev)
{
u16 val;
int err;
switch (phydev->mdix_ctrl) {
case ETH_TP_MDI_AUTO:
val = MV_PCS_CSCR1_MDIX_AUTO;
break;
case ETH_TP_MDI_X:
val = MV_PCS_CSCR1_MDIX_MDIX;
break;
case ETH_TP_MDI:
val = MV_PCS_CSCR1_MDIX_MDI;
break;
default:
return -EINVAL;
}
err = phy_modify_mmd_changed(phydev, MDIO_MMD_PCS, MV_PCS_CSCR1,
MV_PCS_CSCR1_MDIX_MASK, val);
if (err > 0)
err = mv3310_reset(phydev, MV_PCS_BASE_T);
return err;
}
static int mv3310_config_aneg(struct phy_device *phydev)
{
bool changed = false;
u16 reg;
int ret;
/* We don't support manual MDI control */
phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
ret = mv3310_config_mdix(phydev);
if (ret < 0)
return ret;
if (phydev->autoneg == AUTONEG_DISABLE)
return genphy_c45_pma_setup_forced(phydev);