marvell/linux/drivers/net/phy/realtek.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * drivers/net/phy/realtek.c
 *
 * Driver for Realtek PHYs
 *
 * Author: Johnson Leung <r58129@freescale.com>
 *
 * Copyright (c) 2004 Freescale Semiconductor, Inc.
 */
#include <linux/bitops.h>
#include <linux/phy.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/miscdevice.h>
#include <linux/uaccess.h>
#include <linux/gpio/consumer.h>
#include <linux/of_gpio.h>
//#LYNQ_MODFIY modify for task-1618 2025/6/10 start

#define DEVICE_NAME "mdio_misc"

struct rtl9000bf_mdio_dev {
    struct phy_device *phydev;
    struct mutex lock;
	int    rst_gpio;
};
struct mdio_reg_op {
	uint32_t 	reg;
	uint32_t 	val;
};
static struct rtl9000bf_mdio_dev *s_rtl9000bf_mdio_dev;
static u16 param_check[27] = {0, 0x8017, 0xFB03, 0, 0x8092, 0x6000, 0, 0x80AF,  0x6000, \
							  0, 0x807D, 0x4443, 0, 0x809A, 0x4443,  \
							  0, 0x81A3, 0x0F00, 0x0A81, 0x12, 0x0004, 0,  \
							  0x83C8, 0x0005, 0x0A5C, 0x12, 0x0003};

static u16  param_check2[5] = {0x401C, 0xA610, 0x8520, 0xA510, 0x21F4};
static u16  param_check3[3] = {0, 0xA000, 0x11EF};

#define RTL9000BF_INIT_TIMES_OUT		10
#define RTL9000BF_ACCESS_TIMES_OUT		10
//#LYNQ_MODFIY modify for task-1618 2025/6/10 end

#define RTL821x_PHYSR				0x11
#define RTL821x_PHYSR_DUPLEX			BIT(13)
#define RTL821x_PHYSR_SPEED			GENMASK(15, 14)

#define RTL821x_INER				0x12
#define RTL8211B_INER_INIT			0x6400
#define RTL8211E_INER_LINK_STATUS		BIT(10)
#define RTL8211F_INER_LINK_STATUS		BIT(4)

#define RTL821x_INSR				0x13

#define RTL821x_EXT_PAGE_SELECT			0x1e
#define RTL821x_PAGE_SELECT			0x1f

#define RTL8211F_INSR				0x1d

#define RTL8211F_TX_DELAY			BIT(8)
#define RTL8211E_TX_DELAY			BIT(1)
#define RTL8211E_RX_DELAY			BIT(2)
#define RTL8211E_MODE_MII_GMII			BIT(3)

#define RTL8201F_ISR				0x1e
#define RTL8201F_IER				0x13

#define RTL8366RB_POWER_SAVE			0x15
#define RTL8366RB_POWER_SAVE_ON			BIT(12)

#define RTL_SUPPORTS_5000FULL			BIT(14)
#define RTL_SUPPORTS_2500FULL			BIT(13)
#define RTL_SUPPORTS_10000FULL			BIT(0)
#define RTL_ADV_2500FULL			BIT(7)
#define RTL_LPADV_10000FULL			BIT(11)
#define RTL_LPADV_5000FULL			BIT(6)
#define RTL_LPADV_2500FULL			BIT(5)

#define RTLGEN_SPEED_MASK			0x0630

#define RTL_GENERIC_PHYID			0x001cc800

MODULE_DESCRIPTION("Realtek PHY driver");
MODULE_AUTHOR("Johnson Leung");
MODULE_LICENSE("GPL");

static int rtl821x_read_page(struct phy_device *phydev)
{
	return __phy_read(phydev, RTL821x_PAGE_SELECT);
}

static int rtl821x_write_page(struct phy_device *phydev, int page)
{
	return __phy_write(phydev, RTL821x_PAGE_SELECT, page);
}

static int rtl8201_ack_interrupt(struct phy_device *phydev)
{
	int err;

	err = phy_read(phydev, RTL8201F_ISR);

	return (err < 0) ? err : 0;
}

static int rtl821x_ack_interrupt(struct phy_device *phydev)
{
	int err;

	err = phy_read(phydev, RTL821x_INSR);

	return (err < 0) ? err : 0;
}

static int rtl8211f_ack_interrupt(struct phy_device *phydev)
{
	int err;

	err = phy_read_paged(phydev, 0xa43, RTL8211F_INSR);

	return (err < 0) ? err : 0;
}

static int rtl8201_config_intr(struct phy_device *phydev)
{
	u16 val;

	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
		val = BIT(13) | BIT(12) | BIT(11);
	else
		val = 0;

	return phy_write_paged(phydev, 0x7, RTL8201F_IER, val);
}

static int rtl8211b_config_intr(struct phy_device *phydev)
{
	int err;

	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
		err = phy_write(phydev, RTL821x_INER,
				RTL8211B_INER_INIT);
	else
		err = phy_write(phydev, RTL821x_INER, 0);

	return err;
}

static int rtl8211e_config_intr(struct phy_device *phydev)
{
	int err;

	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
		err = phy_write(phydev, RTL821x_INER,
				RTL8211E_INER_LINK_STATUS);
	else
		err = phy_write(phydev, RTL821x_INER, 0);

	return err;
}

static int rtl8211f_config_intr(struct phy_device *phydev)
{
	u16 val;

	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
		val = RTL8211F_INER_LINK_STATUS;
	else
		val = 0;

	return phy_write_paged(phydev, 0xa42, RTL821x_INER, val);
}

static int rtl8211_config_aneg(struct phy_device *phydev)
{
	int ret;

	ret = genphy_config_aneg(phydev);
	if (ret < 0)
		return ret;

	/* Quirk was copied from vendor driver. Unfortunately it includes no
	 * description of the magic numbers.
	 */
	if (phydev->speed == SPEED_100 && phydev->autoneg == AUTONEG_DISABLE) {
		phy_write(phydev, 0x17, 0x2138);
		phy_write(phydev, 0x0e, 0x0260);
	} else {
		phy_write(phydev, 0x17, 0x2108);
		phy_write(phydev, 0x0e, 0x0000);
	}

	return 0;
}

static int rtl8211c_config_init(struct phy_device *phydev)
{
	/* RTL8211C has an issue when operating in Gigabit slave mode */
	return phy_set_bits(phydev, MII_CTRL1000,
			    CTL1000_ENABLE_MASTER | CTL1000_AS_MASTER);
}

static int rtl8211f_config_init(struct phy_device *phydev)
{
	struct device *dev = &phydev->mdio.dev;
	u16 val;
	int ret;

	/* enable TX-delay for rgmii-{id,txid}, and disable it for rgmii and
	 * rgmii-rxid. The RX-delay can be enabled by the external RXDLY pin.
	 */
	switch (phydev->interface) {
	case PHY_INTERFACE_MODE_RGMII:
	case PHY_INTERFACE_MODE_RGMII_RXID:
		val = 0;
		break;
	case PHY_INTERFACE_MODE_RGMII_ID:
	case PHY_INTERFACE_MODE_RGMII_TXID:
		val = RTL8211F_TX_DELAY;
		break;
	default: /* the rest of the modes imply leaving delay as is. */
		return 0;
	}

	ret = phy_modify_paged_changed(phydev, 0xd08, 0x11, RTL8211F_TX_DELAY,
				       val);
	if (ret < 0) {
		dev_err(dev, "Failed to update the TX delay register\n");
		return ret;
	} else if (ret) {
		dev_dbg(dev,
			"%s 2ns TX delay (and changing the value from pin-strapping RXD1 or the bootloader)\n",
			val ? "Enabling" : "Disabling");
	} else {
		dev_dbg(dev,
			"2ns TX delay was already %s (by pin-strapping RXD1 or bootloader configuration)\n",
			val ? "enabled" : "disabled");
	}

	return 0;
}

static int rtl8211e_config_init(struct phy_device *phydev)
{
	int ret = 0, oldpage;
	u16 val;

	/* enable TX/RX delay for rgmii-* modes, and disable them for rgmii. */
	switch (phydev->interface) {
	case PHY_INTERFACE_MODE_RGMII:
		val = 0;
		break;
	case PHY_INTERFACE_MODE_RGMII_ID:
		val = RTL8211E_TX_DELAY | RTL8211E_RX_DELAY;
		break;
	case PHY_INTERFACE_MODE_RGMII_RXID:
		val = RTL8211E_RX_DELAY;
		break;
	case PHY_INTERFACE_MODE_RGMII_TXID:
		val = RTL8211E_TX_DELAY;
		break;
	default: /* the rest of the modes imply leaving delays as is. */
		return 0;
	}

	/* According to a sample driver there is a 0x1c config register on the
	 * 0xa4 extension page (0x7) layout. It can be used to disable/enable
	 * the RX/TX delays otherwise controlled by RXDLY/TXDLY pins. It can
	 * also be used to customize the whole configuration register:
	 * 8:6 = PHY Address, 5:4 = Auto-Negotiation, 3 = Interface Mode Select,
	 * 2 = RX Delay, 1 = TX Delay, 0 = SELRGV (see original PHY datasheet
	 * for details).
	 */
	oldpage = phy_select_page(phydev, 0x7);
	if (oldpage < 0)
		goto err_restore_page;

	ret = __phy_write(phydev, RTL821x_EXT_PAGE_SELECT, 0xa4);
	if (ret)
		goto err_restore_page;

	ret = __phy_modify(phydev, 0x1c, RTL8211E_TX_DELAY | RTL8211E_RX_DELAY,
			   val);

err_restore_page:
	return phy_restore_page(phydev, oldpage, ret);
}

static int rtl8211b_suspend(struct phy_device *phydev)
{
	phy_write(phydev, MII_MMD_DATA, BIT(9));

	return genphy_suspend(phydev);
}

static int rtl8211b_resume(struct phy_device *phydev)
{
	phy_write(phydev, MII_MMD_DATA, 0);

	return genphy_resume(phydev);
}

static int rtl8366rb_config_init(struct phy_device *phydev)
{
	int ret;

	ret = phy_set_bits(phydev, RTL8366RB_POWER_SAVE,
			   RTL8366RB_POWER_SAVE_ON);
	if (ret) {
		dev_err(&phydev->mdio.dev,
			"error enabling power management\n");
	}

	return ret;
}

/* get actual speed to cover the downshift case */
static int rtlgen_get_speed(struct phy_device *phydev)
{
	int val;

	if (!phydev->link)
		return 0;

	val = phy_read_paged(phydev, 0xa43, 0x12);
	if (val < 0)
		return val;

	switch (val & RTLGEN_SPEED_MASK) {
	case 0x0000:
		phydev->speed = SPEED_10;
		break;
	case 0x0010:
		phydev->speed = SPEED_100;
		break;
	case 0x0020:
		phydev->speed = SPEED_1000;
		break;
	case 0x0200:
		phydev->speed = SPEED_10000;
		break;
	case 0x0210:
		phydev->speed = SPEED_2500;
		break;
	case 0x0220:
		phydev->speed = SPEED_5000;
		break;
	default:
		break;
	}

	return 0;
}

static int rtlgen_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)
{
	int ret;

	if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE) {
		rtl821x_write_page(phydev, 0xa5c);
		ret = __phy_read(phydev, 0x12);
		rtl821x_write_page(phydev, 0);
	} else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV) {
		rtl821x_write_page(phydev, 0xa5d);
		ret = __phy_read(phydev, 0x10);
		rtl821x_write_page(phydev, 0);
	} else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_LPABLE) {
		rtl821x_write_page(phydev, 0xa5d);
		ret = __phy_read(phydev, 0x11);
		rtl821x_write_page(phydev, 0);
	} else {
		ret = -EOPNOTSUPP;
	}

	return ret;
}

static int rtlgen_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,
			    u16 val)
{
	int ret;

	if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV) {
		rtl821x_write_page(phydev, 0xa5d);
		ret = __phy_write(phydev, 0x10, val);
		rtl821x_write_page(phydev, 0);
	} else {
		ret = -EOPNOTSUPP;
	}

	return ret;
}

static int rtl8125_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)
{
	int ret = rtlgen_read_mmd(phydev, devnum, regnum);

	if (ret != -EOPNOTSUPP)
		return ret;

	if (devnum == MDIO_MMD_PCS && regnum == MDIO_PCS_EEE_ABLE2) {
		rtl821x_write_page(phydev, 0xa6e);
		ret = __phy_read(phydev, 0x16);
		rtl821x_write_page(phydev, 0);
	} else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV2) {
		rtl821x_write_page(phydev, 0xa6d);
		ret = __phy_read(phydev, 0x12);
		rtl821x_write_page(phydev, 0);
	} else if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_LPABLE2) {
		rtl821x_write_page(phydev, 0xa6d);
		ret = __phy_read(phydev, 0x10);
		rtl821x_write_page(phydev, 0);
	}

	return ret;
}

static int rtl8125_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,
			     u16 val)
{
	int ret = rtlgen_write_mmd(phydev, devnum, regnum, val);

	if (ret != -EOPNOTSUPP)
		return ret;

	if (devnum == MDIO_MMD_AN && regnum == MDIO_AN_EEE_ADV2) {
		rtl821x_write_page(phydev, 0xa6d);
		ret = __phy_write(phydev, 0x12, val);
		rtl821x_write_page(phydev, 0);
	}

	return ret;
}

static int rtl8125_get_features(struct phy_device *phydev)
{
	int val;

	val = phy_read_paged(phydev, 0xa61, 0x13);
	if (val < 0)
		return val;

	linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
			 phydev->supported, val & RTL_SUPPORTS_2500FULL);
	linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT,
			 phydev->supported, val & RTL_SUPPORTS_5000FULL);
	linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
			 phydev->supported, val & RTL_SUPPORTS_10000FULL);

	return genphy_read_abilities(phydev);
}

static int rtl8125_config_aneg(struct phy_device *phydev)
{
	int ret = 0;

	if (phydev->autoneg == AUTONEG_ENABLE) {
		u16 adv2500 = 0;

		if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
				      phydev->advertising))
			adv2500 = RTL_ADV_2500FULL;

		ret = phy_modify_paged_changed(phydev, 0xa5d, 0x12,
					       RTL_ADV_2500FULL, adv2500);
		if (ret < 0)
			return ret;
	}

	return __genphy_config_aneg(phydev, ret);
}

static int rtl8125_read_status(struct phy_device *phydev)
{
	if (phydev->autoneg == AUTONEG_ENABLE) {
		int lpadv = phy_read_paged(phydev, 0xa5d, 0x13);

		if (lpadv < 0)
			return lpadv;

		linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
			phydev->lp_advertising, lpadv & RTL_LPADV_10000FULL);
		linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT,
			phydev->lp_advertising, lpadv & RTL_LPADV_5000FULL);
		linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
			phydev->lp_advertising, lpadv & RTL_LPADV_2500FULL);
	}

	return genphy_read_status(phydev);
}

static int rtl822x_config_init(struct phy_device *phydev)
{
	struct device *dev = &phydev->mdio.dev;
	int ret;
	int reg;

	switch (phydev->interface) {
	case PHY_INTERFACE_MODE_SGMII:
	case PHY_INTERFACE_MODE_2500BASEX:
		break;
	default:
		return 0;
	}

	/* set serdes mode */
	reg = phy_read_mmd(phydev, 30, 0x697a);
	dev_info(dev, "MMD30:0x697a = 0x%x\n", reg);

	/* change to 2500Base-X + SGMII mode*/
	phy_modify_mmd_changed(phydev, 30, 0x75F3, 0x1, 0);
	ret = phy_modify_mmd_changed(phydev, 30, 0x697a, 0x1f, 0x0);
	if (ret < 0) {
		dev_err(dev, "Failed to update serdes option mode\n");
		return ret;
	} else if (ret) {
		dev_info(dev, "serdes option mode set\n");

		/* make changes take effect */
		phy_modify_mmd_changed(phydev, 31, 0xA400, 0x1 << 14, 0x1 << 14);
		do {
			reg = phy_read_mmd(phydev, 31, 0xA434);
			if (reg & (0x1 << 2))
				break;
		} while(1);
		phy_modify_mmd_changed(phydev, 31, 0xA400, 0x1 << 14, 0);

	} else {
		dev_info(dev, "serdes option mode already set\n");
	}

	/* disabled hisgmii auto-negotiation */
	phy_write_mmd(phydev, 30, 0x7588, 0x2);
	phy_write_mmd(phydev, 30, 0x7589, 0x71d0);
	phy_write_mmd(phydev, 30, 0x7587, 0x3);

	dev_info(dev, "start to wait disable hisgmii AN finish\n");
	do {
		reg = phy_read_mmd(phydev, 30, 0x7587);
		if ((reg & 0x1) == 0)
			break;
	} while(1);

	return 0;
}

static int rtl822x_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)
{
	int ret;

	if (devnum == MDIO_MMD_VEND2) {
		int page, regad;

		page = regnum >> 4;
		regad = 16 + (regnum % 16) / 2;

		rtl821x_write_page(phydev, page);
		ret = __phy_read(phydev, regad);
		rtl821x_write_page(phydev, 0);
	} else {
		/* Write the desired MMD Devad */
		__phy_write(phydev, MII_MMD_CTRL, devnum);
		/* Write the desired MMD register address */
		__phy_write(phydev, MII_MMD_DATA, regnum);
		/* Select the Function : DATA with no post increment */
		__phy_write(phydev, MII_MMD_CTRL, devnum | MII_MMD_CTRL_NOINCR);
		/* Read the content of the MMD's selected register */
		ret = __phy_read(phydev, MII_MMD_DATA);
	}

	return ret;
}

static int rtl822x_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,
			     u16 val)
{
	int ret;

	if (devnum == MDIO_MMD_VEND2) {
		int page, regad;

		page = regnum >> 4;
		regad = 16 + (regnum % 16) / 2;

		rtl821x_write_page(phydev, page);
		ret = __phy_write(phydev, regad, val);
		rtl821x_write_page(phydev, 0);
	} else {
		/* Write the desired MMD Devad */
		__phy_write(phydev, MII_MMD_CTRL, devnum);
		/* Write the desired MMD register address */
		__phy_write(phydev, MII_MMD_DATA, regnum);
		/* Select the Function : DATA with no post increment */
		__phy_write(phydev, MII_MMD_CTRL, devnum | MII_MMD_CTRL_NOINCR);
		/* Write the data into MMD's selected register */
		ret = __phy_write(phydev, MII_MMD_DATA, val);
	}

	return ret;
}

static int rtl822x_get_features(struct phy_device *phydev)
{
	int val;

	val = phy_read_paged(phydev, 0xa61, 0x13);
	if (val < 0)
		return val;

	linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
			 phydev->supported, val & RTL_SUPPORTS_2500FULL);
	linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT,
			 phydev->supported, val & RTL_SUPPORTS_5000FULL);
	linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
			 phydev->supported, val & RTL_SUPPORTS_10000FULL);

	return genphy_read_abilities(phydev);
}

static int rtl822x_config_aneg(struct phy_device *phydev)
{
	int ret = 0;

	if (phydev->autoneg == AUTONEG_ENABLE) {
		u16 adv2500 = 0;

		if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
				      phydev->advertising))
			adv2500 = RTL_ADV_2500FULL;

		ret = phy_modify_paged_changed(phydev, 0xa5d, 0x12,
					       RTL_ADV_2500FULL, adv2500);
		if (ret < 0)
			return ret;
	}

	return __genphy_config_aneg(phydev, ret);
}

static int rtlgen_get_serdes_mode(struct phy_device *phydev)
{
	struct device *dev = &phydev->mdio.dev;
	int ret;

	ret = phy_read_mmd(phydev, 30, 0x7580);
	if (ret < 0)
		return ret;

	switch (ret & 0x1f) {
	case 0x2:
		phydev->interface = PHY_INTERFACE_MODE_SGMII;
		dev_dbg(dev, "==> Serdes mode: SGMII\n");
		break;
	case 0x12:
		phydev->interface = PHY_INTERFACE_MODE_NA;
		dev_dbg(dev, "==> Serdes mode: HiSGMII\n");
		break;
	case 0x16:
		phydev->interface = PHY_INTERFACE_MODE_2500BASEX;
		dev_dbg(dev, "==> Serdes mode: 2500BASE-X\n");
		break;
	case 0x1f:
		dev_dbg(dev, "==> Serdes mode: off\n");
		break;
	default:
		break;
	}

	return 0;
}

static int rtl822x_read_status(struct phy_device *phydev)
{
	int ret;

	if (phydev->autoneg == AUTONEG_ENABLE) {
		int lpadv = phy_read_paged(phydev, 0xa5d, 0x13);

		if (lpadv < 0)
			return lpadv;

		linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
			phydev->lp_advertising, lpadv & RTL_LPADV_10000FULL);
		linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT,
			phydev->lp_advertising, lpadv & RTL_LPADV_5000FULL);
		linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
			phydev->lp_advertising, lpadv & RTL_LPADV_2500FULL);
	}

	ret = genphy_read_status(phydev);
	if (ret < 0)
		return ret;

	ret = rtlgen_get_serdes_mode(phydev);
	if (ret < 0)
		return ret;

	return rtlgen_get_speed(phydev);
}

static bool rtlgen_supports_2_5gbps(struct phy_device *phydev)
{
	int val;

	phy_write(phydev, RTL821x_PAGE_SELECT, 0xa61);
	val = phy_read(phydev, 0x13);
	phy_write(phydev, RTL821x_PAGE_SELECT, 0);

	return val >= 0 && val & RTL_SUPPORTS_2500FULL;
}

static int rtlgen_match_phy_device(struct phy_device *phydev)
{
	return phydev->phy_id == RTL_GENERIC_PHYID &&
	       !rtlgen_supports_2_5gbps(phydev);
}

static int rtl8125_match_phy_device(struct phy_device *phydev)
{
	return phydev->phy_id == RTL_GENERIC_PHYID &&
	       rtlgen_supports_2_5gbps(phydev);
}

static int rtlgen_resume(struct phy_device *phydev)
{
	int ret = genphy_resume(phydev);

	/* Internal PHY's from RTL8168h up may not be instantly ready */
	msleep(20);

	return ret;
}
//#LYNQ_MODFIY modify for task-1618 2025/6/10 start

static int mdio_misc_open(struct inode *inode, struct file *file) 
{
    return 0;
}

static ssize_t mdio_misc_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos)
{
    struct rtl9000bf_mdio_dev *dev = s_rtl9000bf_mdio_dev;
	struct mdio_reg_op reg_op;

	if (count < sizeof(struct mdio_reg_op))
		return -EINVAL;

	if (copy_from_user(&reg_op, buf, sizeof(struct mdio_reg_op)))
		return -EFAULT;


    mutex_lock(&dev->lock);
    reg_op.val = __phy_read(dev->phydev, reg_op.reg);
    mutex_unlock(&dev->lock);

    if (copy_to_user(buf, &reg_op, sizeof(struct mdio_reg_op)))
        return -EFAULT;

    return  sizeof(reg_op);
}

static ssize_t mdio_misc_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos)
{	
    struct rtl9000bf_mdio_dev *dev = s_rtl9000bf_mdio_dev;
	struct mdio_reg_op reg_op;
    int    ret;

	if (count < sizeof(struct mdio_reg_op))
		return -EINVAL;

	if (copy_from_user(&reg_op, buf, sizeof(struct mdio_reg_op)))
		return -EFAULT;


    mutex_lock(&dev->lock);
    ret = __phy_write(dev->phydev, reg_op.reg, reg_op.val);
    mutex_unlock(&dev->lock);

	*f_pos += count;
	return ret ? ret : count;

}

static const struct file_operations mdio_misc_fops = {
    .owner = THIS_MODULE,
    .open = mdio_misc_open,
    .read = mdio_misc_read,
    .write = mdio_misc_write,
};

static struct miscdevice mdio_misc_device = {
    .minor = MISC_DYNAMIC_MINOR,
    .name = DEVICE_NAME,
    .fops = &mdio_misc_fops,
};

static int mdio_misc_init(struct phy_device *phydev)
{
    s_rtl9000bf_mdio_dev->phydev = phydev;
    mutex_init(&s_rtl9000bf_mdio_dev->lock);
    return misc_register(&mdio_misc_device);
}

static s16 RTL9000Bx_Initial_Configuration(struct phy_device *phydev)
{
	u16 reg_data = 0;
	u32 timer = 2000; // set a 2ms timer
	
	//power down
	__phy_write(phydev, 0, 0x800); 
	mdelay(10);
	
	__phy_write(phydev, 27, 0x8017);
	__phy_write(phydev, 28, 0xFB03);
	__phy_write(phydev, 27, 0x8092);
	__phy_write(phydev, 28, 0x6000);
	__phy_write(phydev, 27, 0x80AF);
	__phy_write(phydev, 28, 0x6000);
	__phy_write(phydev, 27, 0x807D);
	__phy_write(phydev, 28, 0x4443);
	__phy_write(phydev, 27, 0x809A);
	__phy_write(phydev, 28, 0x4443);
	__phy_write(phydev, 27, 0x81A3);
	__phy_write(phydev, 28, 0x0F00);
	__phy_write(phydev, 31, 0x0a81);
	__phy_write(phydev, 18, 0x0004);
	__phy_write(phydev, 27, 0x83c8);
	__phy_write(phydev, 28, 0x0005);
	__phy_write(phydev, 31, 0x0a5c);
	__phy_write(phydev, 18, 0x0003);
	__phy_write(phydev, 27, 0xB820);
	__phy_write(phydev, 28, 0x0010);
	__phy_write(phydev, 27, 0xB830);
	__phy_write(phydev, 28, 0x8000);

	__phy_write(phydev, 27, 0xB800);
	do {
		reg_data = ((u16)__phy_read(phydev, 28) & 0x0040);
		timer--;
		if (timer == 0)
		{
			return -1;
		}
	} while (reg_data != 0x0040);

	__phy_write(phydev, 27, 0x8020);
	__phy_write(phydev, 28, 0x3300);
	__phy_write(phydev, 27, 0xb82e);
	__phy_write(phydev, 28, 0x0001);
	__phy_write(phydev, 27, 0xb820);
	__phy_write(phydev, 28, 0x0290);
	__phy_write(phydev, 27, 0xa012);
	__phy_write(phydev, 28, 0x0000);
	__phy_write(phydev, 27, 0xa014);
	__phy_write(phydev, 28, 0x401c);
	__phy_write(phydev, 28, 0xa610);
	__phy_write(phydev, 28, 0x8520);
	__phy_write(phydev, 28, 0xa510);
	__phy_write(phydev, 28, 0x21f4);
	__phy_write(phydev, 27, 0xa01a);
	__phy_write(phydev, 28, 0x0000);
	__phy_write(phydev, 27, 0xa000);
	__phy_write(phydev, 28, 0x11ef);
	__phy_write(phydev, 27, 0xb820);
	__phy_write(phydev, 28, 0x0210);
	__phy_write(phydev, 27, 0xb82e);
	__phy_write(phydev, 28, 0x0000);
	__phy_write(phydev, 27, 0x8020);
	__phy_write(phydev, 28, 0x0000);
	__phy_write(phydev, 27, 0xb820);
	__phy_write(phydev, 28, 0x0000);

	__phy_write(phydev, 27, 0xb800);
	timer = 2000; // set a 2ms timer
	do {
		reg_data = ((u16)__phy_read(phydev, 28) & 0x0040);
		timer--;
		if (timer == 0) {
			return -1;
		}
	} while (reg_data != 0x0000);
		
	__phy_write(phydev, 0, 0x2100); //power on

	return 0;
}

static s16 RTL9000Bx_Initial_Configuration_Check(struct phy_device *phydev)
{
	u16 reg_data = 0, reg_data_temp;
	u16 reg_data_chk = 0;
	u32 timer = 2000; // set a 2ms timer

	u16 page;
	u16 reg, i, param_address;

	for (i = 0; i < 27; i = i + 3) {
		page = param_check[i];
		reg = param_check[i + 1];
		reg_data_chk = param_check[i + 2];

		if (page == 0) {
			__phy_write(phydev, 27, reg);
			reg_data = __phy_read(phydev, 28);
		}
		else {
			__phy_write(phydev, 31, page);
			reg_data = __phy_read(phydev, reg);
		}
		if (reg_data_chk != reg_data) {
			printk(KERN_ERR "%dth param error page=0x%04X reg=0x%04X data=0x%04X\r\n", i / 3, page, reg, reg_data);
			return -1;
		}
	}

	__phy_write(phydev, 27, 0xB820);
	__phy_write(phydev, 28, 0x0010);
	__phy_write(phydev, 27, 0xB830);
	__phy_write(phydev, 28, 0x8000);

	__phy_write(phydev, 27, 0xB800);
	do {
		reg_data = ((u16)__phy_read(phydev, 28) & 0x0040);
		timer--;
		if (timer == 0){
			return -1;
		}
	} while (reg_data != 0x0040);

	__phy_write(phydev, 27, 0x8020);
	__phy_write(phydev, 28, 0x3300);
	__phy_write(phydev, 27, 0xB82E);
	__phy_write(phydev, 28, 0x0001);

	param_address = 0;
	for (i = 0; i < 5; i++) {
		__phy_write(phydev, 31, 0xA01);
		reg_data_temp = __phy_read(phydev, 17);
		reg_data_temp &= ~(0x1ff);
		param_address &= 0x1FF;
		__phy_write(phydev, 17, (reg_data_temp | param_address));
		__phy_write(phydev, 31, 0xA01);
		reg_data = __phy_read(phydev, 18);
		reg_data_chk = param_check2[i];
		if (reg_data_chk != reg_data){
			printk(KERN_ERR "%dth param error data=0x%04X  expected_data=0x%04X\r\n", i, reg_data, reg_data_chk);
			return -1;
		}
		param_address++;
	}
	for (i = 0; i < 3; i = i + 3) {
		page = param_check3[i];
		reg = param_check3[i + 1];
		reg_data_chk = param_check3[i + 2];

		if (page == 0) {
			__phy_write(phydev, 27, reg);
			reg_data = __phy_read(phydev, 28);
		}
		else {
			__phy_write(phydev, 31, page);
			reg_data = __phy_read(phydev, reg);
		}
		if (reg_data_chk != reg_data) {
			printk(KERN_ERR "%dth param error page=0x%04X reg=0x%04X data=0x%04X\r\n", i / 3, page, reg, reg_data);
			return -1;
		}
	}
	__phy_write(phydev, 27, 0xB82E);
	__phy_write(phydev, 28, 0x0000);
	__phy_write(phydev, 27, 0x8020);
	__phy_write(phydev, 28, 0x0000);
	__phy_write(phydev, 27, 0xB820);
	__phy_write(phydev, 28, 0x0000);

	__phy_write(phydev, 27, 0xB800);
	timer = 2000; // set a 2ms timer
	do {
		reg_data = ((u16)__phy_read(phydev, 28) & 0x0040);
		timer--;
		if (timer == 0){
			return -1;
		}
	} while (reg_data != 0x0000);

	return 0;
}

static int rtl9000Bf_config_init(struct phy_device *phydev)
{
	u32 mdio_data = 0;
	u32 ret;
	int times= 1;	
	struct device_node *np;
	
	np = phydev->mdio.dev.of_node;
	if (!np) {
		dev_err(&phydev->mdio.dev, "No device tree node found\n");
		return -ENODEV;
	}
	
    if (!s_rtl9000bf_mdio_dev) {
        s_rtl9000bf_mdio_dev = kzalloc(sizeof(*s_rtl9000bf_mdio_dev), GFP_KERNEL);
        if (!s_rtl9000bf_mdio_dev)
            return -ENOMEM;

		s_rtl9000bf_mdio_dev->rst_gpio = of_get_named_gpio(np, "rst-gpio", 0);
		if (s_rtl9000bf_mdio_dev->rst_gpio < 0) {
			dev_err(&phydev->mdio.dev, "Failed to get reset gpio: %d\n", s_rtl9000bf_mdio_dev->rst_gpio);
			kfree(s_rtl9000bf_mdio_dev);
			s_rtl9000bf_mdio_dev = NULL;
			return s_rtl9000bf_mdio_dev->rst_gpio;
		}
		ret = mdio_misc_init(phydev);
		if(ret){
			goto err;
		}
    }
	
	gpio_request(s_rtl9000bf_mdio_dev->rst_gpio, "phy-reset");
	gpio_direction_output(s_rtl9000bf_mdio_dev->rst_gpio, 0);
	mdelay(20);
	gpio_set_value(s_rtl9000bf_mdio_dev->rst_gpio, 1);
	mdelay(20);

	//check PHY accessible
 	while(times <= RTL9000BF_ACCESS_TIMES_OUT) {
		mdio_data = phy_read(phydev, 0x10);
		mdio_data = mdio_data & 0x0007;
		if(mdio_data == 0x0003) {
			printk(KERN_INFO "phy_info: phy is accessible \n");
			break;
		} else { 
			printk(KERN_INFO "phy_info: phy is not accessible times:%d \n", times);
			gpio_direction_output(s_rtl9000bf_mdio_dev->rst_gpio, 0);
			mdelay(30);
			gpio_set_value(s_rtl9000bf_mdio_dev->rst_gpio, 1);
			mdelay(20);
		}
		times++;
		mdelay(1000);
	}
	
	if(times >= RTL9000BF_ACCESS_TIMES_OUT) {
		printk(KERN_ERR "phy_info: phy init error times:%d \n", times);
		ret = -1;
		goto err;
	} 
	
	times = 1;
	
	//init phy init and check phy init
	while(times <= RTL9000BF_INIT_TIMES_OUT) {
		ret = RTL9000Bx_Initial_Configuration(phydev);
		if(0 == ret) {
			printk(KERN_INFO "phy_info: phy init success times:%d \n", times);
			ret = RTL9000Bx_Initial_Configuration_Check(phydev);
			if(0 == ret) {
				printk(KERN_INFO "phy_info: phy init_check success times:%d \n", times);
				break;
			} else {
				printk(KERN_INFO "phy_info: phy init_check error times:%d \n", times);
			}
		} else {
			printk(KERN_INFO "phy_info: phy init error times:%d \n", times);
			//phy hard reset
			gpio_set_value(s_rtl9000bf_mdio_dev->rst_gpio, 0);
			mdelay(30);
			gpio_set_value(s_rtl9000bf_mdio_dev->rst_gpio, 1);
			mdelay(20);
		}		
		times++;
	} 
	
	if(times >= RTL9000BF_INIT_TIMES_OUT) {
		printk(KERN_ERR "phy_info: phy init error times:%d \n", times);
		ret = -1;
		goto err;
	} 
	
	/*	I/O Power Sllection  */
	//change page to default value
	__phy_write(phydev, 0x1F, 0x0A4C);	
	mdio_data = __phy_read(phydev, 0x12);
	mdio_data &= 0xC7FF;
	mdio_data |= 4 << 11;
	__phy_write(phydev, 0x12, mdio_data);
	printk(KERN_INFO "phy_info: set rgmii driving strengths is 1.8v \n");

	phydev->autoneg = AUTONEG_DISABLE;
	phydev->duplex = DUPLEX_FULL;

	return 0;
	
err:
	gpio_free(s_rtl9000bf_mdio_dev->rst_gpio);
    kfree(s_rtl9000bf_mdio_dev);
    s_rtl9000bf_mdio_dev = NULL;
	return ret;
}

static void rtl9000Bf_remove(struct phy_device *phydev)
{
    if (s_rtl9000bf_mdio_dev && s_rtl9000bf_mdio_dev->phydev == phydev) {
        misc_deregister(&mdio_misc_device);
		gpio_free(s_rtl9000bf_mdio_dev->rst_gpio);
        kfree(s_rtl9000bf_mdio_dev);
        s_rtl9000bf_mdio_dev = NULL;
    }

}

static int rtl9000Bf_read_status(struct phy_device *phydev)
{
	phydev->duplex = DUPLEX_FULL;
	phydev->speed = SPEED_100;
	phydev->pause = 0;
	phydev->asym_pause = 0;
	phydev->link = 1;
	
	return 0;
}
static int rtl9000Bf_soft_reset(struct phy_device *phydev)
{
	return 0;
}

//#LYNQ_MODFIY modify for task-1618 2025/6/10 end

static struct phy_driver realtek_drvs[] = {
	{
		PHY_ID_MATCH_EXACT(0x00008201),
		.name           = "RTL8201CP Ethernet",
	}, {
		PHY_ID_MATCH_EXACT(0x001cc816),
		.name		= "RTL8201F Fast Ethernet",
		.ack_interrupt	= &rtl8201_ack_interrupt,
		.config_intr	= &rtl8201_config_intr,
		.suspend	= genphy_suspend,
		.resume		= genphy_resume,
		.read_page	= rtl821x_read_page,
		.write_page	= rtl821x_write_page,
	}, {
		PHY_ID_MATCH_MODEL(0x001cc880),
		.name		= "RTL8208 Fast Ethernet",
		.read_mmd	= genphy_read_mmd_unsupported,
		.write_mmd	= genphy_write_mmd_unsupported,
		.suspend	= genphy_suspend,
		.resume		= genphy_resume,
		.read_page	= rtl821x_read_page,
		.write_page	= rtl821x_write_page,
	}, {
		PHY_ID_MATCH_EXACT(0x001cc910),
		.name		= "RTL8211 Gigabit Ethernet",
		.config_aneg	= rtl8211_config_aneg,
		.read_mmd	= &genphy_read_mmd_unsupported,
		.write_mmd	= &genphy_write_mmd_unsupported,
		.read_page	= rtl821x_read_page,
		.write_page	= rtl821x_write_page,
	}, {
		PHY_ID_MATCH_EXACT(0x001cc912),
		.name		= "RTL8211B Gigabit Ethernet",
		.ack_interrupt	= &rtl821x_ack_interrupt,
		.config_intr	= &rtl8211b_config_intr,
		.read_mmd	= &genphy_read_mmd_unsupported,
		.write_mmd	= &genphy_write_mmd_unsupported,
		.suspend	= rtl8211b_suspend,
		.resume		= rtl8211b_resume,
		.read_page	= rtl821x_read_page,
		.write_page	= rtl821x_write_page,
	}, {
		PHY_ID_MATCH_EXACT(0x001cc913),
		.name		= "RTL8211C Gigabit Ethernet",
		.config_init	= rtl8211c_config_init,
		.read_mmd	= &genphy_read_mmd_unsupported,
		.write_mmd	= &genphy_write_mmd_unsupported,
		.read_page	= rtl821x_read_page,
		.write_page	= rtl821x_write_page,
	}, {
		PHY_ID_MATCH_EXACT(0x001cc914),
		.name		= "RTL8211DN Gigabit Ethernet",
		.ack_interrupt	= rtl821x_ack_interrupt,
		.config_intr	= rtl8211e_config_intr,
		.suspend	= genphy_suspend,
		.resume		= genphy_resume,
		.read_page	= rtl821x_read_page,
		.write_page	= rtl821x_write_page,
	}, {
		PHY_ID_MATCH_EXACT(0x001cc915),
		.name		= "RTL8211E Gigabit Ethernet",
		.config_init	= &rtl8211e_config_init,
		.ack_interrupt	= &rtl821x_ack_interrupt,
		.config_intr	= &rtl8211e_config_intr,
		.suspend	= genphy_suspend,
		.resume		= genphy_resume,
		.read_page	= rtl821x_read_page,
		.write_page	= rtl821x_write_page,
	}, {
		PHY_ID_MATCH_EXACT(0x001cc916),
		.name		= "RTL8211F Gigabit Ethernet",
		.config_init	= &rtl8211f_config_init,
		.ack_interrupt	= &rtl8211f_ack_interrupt,
		.config_intr	= &rtl8211f_config_intr,
		.suspend	= genphy_suspend,
		.resume		= genphy_resume,
		.read_page	= rtl821x_read_page,
		.write_page	= rtl821x_write_page,
	}, {
		.name		= "Generic FE-GE Realtek PHY",
		.match_phy_device = rtlgen_match_phy_device,
		.suspend	= genphy_suspend,
		.resume		= genphy_resume,
		.read_page	= rtl821x_read_page,
		.write_page	= rtl821x_write_page,
		.read_mmd	= rtlgen_read_mmd,
		.write_mmd	= rtlgen_write_mmd,
	}, {
		.name		= "RTL8125 2.5Gbps internal",
		.match_phy_device = rtl8125_match_phy_device,
		.get_features	= rtl8125_get_features,
		.config_aneg	= rtl8125_config_aneg,
		.read_status	= rtl8125_read_status,
		.suspend	= genphy_suspend,
		.resume		= genphy_resume,
		.read_page	= rtl821x_read_page,
		.write_page	= rtl821x_write_page,
		.read_mmd	= rtl8125_read_mmd,
		.write_mmd	= rtl8125_write_mmd,
	}, {
		PHY_ID_MATCH_EXACT(0x001cc961),
		.name		= "RTL8366RB Gigabit Ethernet",
		.config_init	= &rtl8366rb_config_init,
		/* These interrupts are handled by the irq controller
		 * embedded inside the RTL8366RB, they get unmasked when the
		 * irq is requested and ACKed by reading the status register,
		 * which is done by the irqchip code.
		 */
		.ack_interrupt	= genphy_no_ack_interrupt,
		.config_intr	= genphy_no_config_intr,
		.suspend	= genphy_suspend,
		.resume		= genphy_resume,
	}, {
		PHY_ID_MATCH_EXACT(0x001cc849),
		.name           = "RTL8221B-VB-CG 2.5Gbps PHY",
		.config_init	= &rtl822x_config_init,
		.get_features   = rtl822x_get_features,
		.config_aneg    = rtl822x_config_aneg,
		.read_status    = rtl822x_read_status,
		.suspend        = genphy_suspend,
		.resume         = rtlgen_resume,
		.read_page      = rtl821x_read_page,
		.write_page     = rtl821x_write_page,
		.read_mmd	= rtl822x_read_mmd,
		.write_mmd	= rtl822x_write_mmd,
	}, {
		PHY_ID_MATCH_EXACT(0x001cc84a),
		.name           = "RTL8221B-VM-CG 2.5Gbps PHY",
		.config_init	= &rtl822x_config_init,
		.get_features   = rtl822x_get_features,
		.config_aneg    = rtl822x_config_aneg,
		.read_status    = rtl822x_read_status,
		.suspend        = genphy_suspend,
		.resume         = rtlgen_resume,
		.read_page      = rtl821x_read_page,
		.write_page     = rtl821x_write_page,
		.read_mmd	= rtl822x_read_mmd,
		.write_mmd	= rtl822x_write_mmd,
	},
//#LYNQ_MODFIY modify for task-1618 2025/6/10 start
		{
		PHY_ID_MATCH_EXACT(0x001ccb00),
		.name		= "RTL90000Bf PHY",
		.config_init	= &rtl9000Bf_config_init,
		.remove  		= &rtl9000Bf_remove,		
		.read_status	= rtl9000Bf_read_status,
		.suspend        = genphy_suspend,
		.resume         = rtlgen_resume,
		.soft_reset		= rtl9000Bf_soft_reset,
	}, 		
//#LYNQ_MODFIY  modify for task-1618 2025/6/10 end

};



module_phy_driver(realtek_drvs);

static const struct mdio_device_id __maybe_unused realtek_tbl[] = {
	{ PHY_ID_MATCH_VENDOR(0x001cc800) },
//#LYNQ_MODFIY modify for task-1618 2025/6/10 start

	{ 0x001ccb00, 0x001fffff },
	
//#LYNQ_MODFIY modify for task-1618 2025/6/10 end
	{ }
};

MODULE_DEVICE_TABLE(mdio, realtek_tbl);