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// SPDX-License-Identifier: GPL-2.0+
#include <linux/module.h>
#include <linux/phylink.h>
#include <linux/device.h>
#include <linux/netdevice.h>
#include <linux/phy/phy.h>
#include "lan966x_main.h"
static struct phylink_pcs *lan966x_phylink_mac_select(struct phylink_config *config,
phy_interface_t interface)
{
struct lan966x_port *port = netdev_priv(to_net_dev(config->dev));
return &port->phylink_pcs;
}
static void lan966x_phylink_mac_config(struct phylink_config *config,
unsigned int mode,
const struct phylink_link_state *state)
{
}
static int lan966x_phylink_mac_prepare(struct phylink_config *config,
unsigned int mode,
phy_interface_t iface)
{
struct lan966x_port *port = netdev_priv(to_net_dev(config->dev));
phy_interface_t serdes_mode = iface;
int err;
if (port->serdes) {
err = phy_set_mode_ext(port->serdes, PHY_MODE_ETHERNET,
serdes_mode);
if (err) {
netdev_err(to_net_dev(config->dev),
"Could not set mode of SerDes\n");
return err;
}
}
return 0;
}
static void lan966x_phylink_mac_link_up(struct phylink_config *config,
struct phy_device *phy,
unsigned int mode,
phy_interface_t interface,
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
struct lan966x_port *port = netdev_priv(to_net_dev(config->dev));
struct lan966x_port_config *port_config = &port->config;
port_config->duplex = duplex;
port_config->speed = speed;
port_config->pause = 0;
port_config->pause |= tx_pause ? MLO_PAUSE_TX : 0;
port_config->pause |= rx_pause ? MLO_PAUSE_RX : 0;
if (phy_interface_mode_is_rgmii(interface))
phy_set_speed(port->serdes, speed);
lan966x_port_config_up(port);
}
static void lan966x_phylink_mac_link_down(struct phylink_config *config,
unsigned int mode,
phy_interface_t interface)
{
struct lan966x_port *port = netdev_priv(to_net_dev(config->dev));
struct lan966x *lan966x = port->lan966x;
lan966x_port_config_down(port);
/* Take PCS out of reset */
lan_rmw(DEV_CLOCK_CFG_PCS_RX_RST_SET(0) |
DEV_CLOCK_CFG_PCS_TX_RST_SET(0),
DEV_CLOCK_CFG_PCS_RX_RST |
DEV_CLOCK_CFG_PCS_TX_RST,
lan966x, DEV_CLOCK_CFG(port->chip_port));
}
static struct lan966x_port *lan966x_pcs_to_port(struct phylink_pcs *pcs)
{
return container_of(pcs, struct lan966x_port, phylink_pcs);
}
static void lan966x_pcs_get_state(struct phylink_pcs *pcs,
struct phylink_link_state *state)
{
struct lan966x_port *port = lan966x_pcs_to_port(pcs);
lan966x_port_status_get(port, state);
}
static int lan966x_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,
phy_interface_t interface,
const unsigned long *advertising,
bool permit_pause_to_mac)
{
struct lan966x_port *port = lan966x_pcs_to_port(pcs);
struct lan966x_port_config config;
int ret;
config = port->config;
config.portmode = interface;
config.inband = neg_mode & PHYLINK_PCS_NEG_INBAND;
config.autoneg = neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED;
config.advertising = advertising;
ret = lan966x_port_pcs_set(port, &config);
if (ret)
netdev_err(port->dev, "port PCS config failed: %d\n", ret);
return ret;
}
static void lan966x_pcs_aneg_restart(struct phylink_pcs *pcs)
{
/* Currently not used */
}
const struct phylink_mac_ops lan966x_phylink_mac_ops = {
.mac_select_pcs = lan966x_phylink_mac_select,
.mac_config = lan966x_phylink_mac_config,
.mac_prepare = lan966x_phylink_mac_prepare,
.mac_link_down = lan966x_phylink_mac_link_down,
.mac_link_up = lan966x_phylink_mac_link_up,
};
const struct phylink_pcs_ops lan966x_phylink_pcs_ops = {
.pcs_get_state = lan966x_pcs_get_state,
.pcs_config = lan966x_pcs_config,
.pcs_an_restart = lan966x_pcs_aneg_restart,
};
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