CherryECAT/include/phy/chry_phy_lan8720.h

/*
 * Copyright (c) 2024, sakumisu
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#include "chry_phy.h"

#define LAN8720_PSCSR 31 /* PHY Special Control/Status Register */

#define LAN8720_PSCSR_DUPLEX_STATUS (0x10U)
/*
 * SPEED (RO)
 *
 * HCDSPEED value:
 * 01 = 10BASE-T
 * 10 = 100BASE-TX
 */
#define LAN8720_PSCSR_SPEED_STATUS (0xCU)

void lan8720_phy_init(struct chry_phy_device *phydev, struct chry_phy_config *config)
{
}

void lan8720_phy_get_status(struct chry_phy_device *phydev, struct chry_phy_status *status)
{
    uint16_t regval;

    regval = phydev->mdio_read(phydev, phydev->phy_addr, MII_BMSR);
    status->link = regval & BMSR_LINKSTATUS;

    if (status->link) {
        regval = phydev->mdio_read(phydev, phydev->phy_addr, LAN8720_PSCSR);
        status->duplex = regval & LAN8720_PSCSR_DUPLEX_STATUS;

        switch ((regval & LAN8720_PSCSR_SPEED_STATUS) >> 2) {
            case 1:
                status->speed = 10;
                break;
            case 2:
                status->speed = 100;
                break;

            default:
                break;
        }
    }
}

const struct chry_phy_driver lan8720_driver = {
    .phy_id = 0x0007C0F0,
    .phy_id_mask = 0xFFFFFFF0,
    .phy_name = "LAN8720",
    .phy_desc = "MICROCHIP LAN8720 Ethernet PHY",
    .phy_init = lan8720_phy_init,
    .phy_get_status = lan8720_phy_get_status,
};