// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Marvell 88E6xxx SERDES manipulation, via SMI bus
*
* Copyright (c) 2008 Marvell Semiconductor
*
* Copyright (c) 2017 Andrew Lunn <andrew@lunn.ch>
*/
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/mii.h>
#include "chip.h"
#include "global2.h"
#include "phy.h"
#include "port.h"
#include "serdes.h"
static int mv88e6352_serdes_read(struct mv88e6xxx_chip *chip, int reg,
u16 *val)
{
return mv88e6xxx_phy_page_read(chip, MV88E6352_ADDR_SERDES,
MV88E6352_SERDES_PAGE_FIBER,
reg, val);
}
static int mv88e6352_serdes_write(struct mv88e6xxx_chip *chip, int reg,
u16 val)
{
return mv88e6xxx_phy_page_write(chip, MV88E6352_ADDR_SERDES,
MV88E6352_SERDES_PAGE_FIBER,
reg, val);
}
static int mv88e6390_serdes_read(struct mv88e6xxx_chip *chip,
int lane, int device, int reg, u16 *val)
{
int reg_c45 = MII_ADDR_C45 | device << 16 | reg;
return mv88e6xxx_phy_read(chip, lane, reg_c45, val);
}
static int mv88e6390_serdes_write(struct mv88e6xxx_chip *chip,
int lane, int device, int reg, u16 val)
{
int reg_c45 = MII_ADDR_C45 | device << 16 | reg;
return mv88e6xxx_phy_write(chip, lane, reg_c45, val);
}
static int mv88e6xxx_serdes_pcs_get_state(struct mv88e6xxx_chip *chip,
u16 status, u16 lpa,
struct phylink_link_state *state)
{
if (status & MV88E6390_SGMII_PHY_STATUS_SPD_DPL_VALID) {
state->link = !!(status & MV88E6390_SGMII_PHY_STATUS_LINK);
state->duplex = status &
MV88E6390_SGMII_PHY_STATUS_DUPLEX_FULL ?
DUPLEX_FULL : DUPLEX_HALF;
if (status & MV88E6390_SGMII_PHY_STATUS_TX_PAUSE)
state->pause |= MLO_PAUSE_TX;
if (status & MV88E6390_SGMII_PHY_STATUS_RX_PAUSE)
state->pause |= MLO_PAUSE_RX;
switch (status & MV88E6390_SGMII_PHY_STATUS_SPEED_MASK) {
case MV88E6390_SGMII_PHY_STATUS_SPEED_1000:
if (state->interface == PHY_INTERFACE_MODE_2500BASEX)
state->speed = SPEED_2500;
else
state->speed = SPEED_1000;
break;
case MV88E6390_SGMII_PHY_STATUS_SPEED_100:
state->speed = SPEED_100;
break;
case MV88E6390_SGMII_PHY_STATUS_SPEED_10:
state->speed = SPEED_10;
break;
default:
dev_err(chip->dev, "invalid PHY speed\n");
return -EINVAL;
}
} else {
state->link = false;
}
if (state->interface == PHY_INTERFACE_MODE_2500BASEX)
mii_lpa_mod_linkmode_x(state->lp_advertising, lpa,
ETHTOOL_LINK_MODE_2500baseX_Full_BIT);
else if (state->interface == PHY_INTERFACE_MODE_1000BASEX)
mii_lpa_mod_linkmode_x(state->lp_advertising, lpa,
ETHTOOL_LINK_MODE_1000baseX_Full_BIT);
return 0;
}
int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, u8 lane,
bool up)
{
u16 val, new_val;
int err;
err = mv88e6352_serdes_read(chip, MII_BMCR, &val);
if (err)
return err;
if (up)
new_val = val & ~BMCR_PDOWN;
else
new_val = val | BMCR_PDOWN;
if (val != new_val)
err = mv88e6352_serdes_write(chip, MII_BMCR, new_val);
return err;
}
int mv88e6352_serdes_pcs_config(struct mv88e6xxx_chip *chip, int port,
u8 lane, unsigned int mode,
phy_interface_t interface,
const unsigned long *advertise)
{
u16 adv, bmcr, val;
bool changed;
int err;
switch (interface) {
case PHY_INTERFACE_MODE_SGMII:
adv = 0x0001;
break;
case PHY_INTERFACE_MODE_1000BASEX:
adv = linkmode_adv_to_mii_adv_x(advertise,
ETHTOOL_LINK_MODE_1000baseX_Full_BIT);
break;
default:
return 0;
}
err = mv88e6352_serdes_read(chip