Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1094 insertions, 0 deletions

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
new file mode 100644
index 0000000000..894172a3e1
--- /dev/null
+++ b/drivers/net/phy/realtek.c
@@ -0,0 +1,1094 @@
+// 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/of.h>
+#include <linux/phy.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+
+#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_PHYCR1				0x18
+#define RTL8211F_PHYCR2				0x19
+#define RTL8211F_INSR				0x1d
+
+#define RTL8211F_TX_DELAY			BIT(8)
+#define RTL8211F_RX_DELAY			BIT(3)
+
+#define RTL8211F_ALDPS_PLL_OFF			BIT(1)
+#define RTL8211F_ALDPS_ENABLE			BIT(2)
+#define RTL8211F_ALDPS_XTAL_OFF			BIT(12)
+
+#define RTL8211E_CTRL_DELAY			BIT(13)
+#define RTL8211E_TX_DELAY			BIT(12)
+#define RTL8211E_RX_DELAY			BIT(11)
+
+#define RTL8211F_CLKOUT_EN			BIT(0)
+
+#define RTL8201F_ISR				0x1e
+#define RTL8201F_ISR_ANERR			BIT(15)
+#define RTL8201F_ISR_DUPLEX			BIT(13)
+#define RTL8201F_ISR_LINK			BIT(11)
+#define RTL8201F_ISR_MASK			(RTL8201F_ISR_ANERR | \
+						 RTL8201F_ISR_DUPLEX | \
+						 RTL8201F_ISR_LINK)
+#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 RTL9000A_GINMR				0x14
+#define RTL9000A_GINMR_LINK_STATUS		BIT(4)
+
+#define RTLGEN_SPEED_MASK			0x0630
+
+#define RTL_GENERIC_PHYID			0x001cc800
+#define RTL_8211FVD_PHYID			0x001cc878
+
+MODULE_DESCRIPTION("Realtek PHY driver");
+MODULE_AUTHOR("Johnson Leung");
+MODULE_LICENSE("GPL");
+
+struct rtl821x_priv {
+	u16 phycr1;
+	u16 phycr2;
+	bool has_phycr2;
+	struct clk *clk;
+};
+
+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 rtl821x_probe(struct phy_device *phydev)
+{
+	struct device *dev = &phydev->mdio.dev;
+	struct rtl821x_priv *priv;
+	u32 phy_id = phydev->drv->phy_id;
+	int ret;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->clk = devm_clk_get_optional_enabled(dev, NULL);
+	if (IS_ERR(priv->clk))
+		return dev_err_probe(dev, PTR_ERR(priv->clk),
+				     "failed to get phy clock\n");
+
+	ret = phy_read_paged(phydev, 0xa43, RTL8211F_PHYCR1);
+	if (ret < 0)
+		return ret;
+
+	priv->phycr1 = ret & (RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_ENABLE | RTL8211F_ALDPS_XTAL_OFF);
+	if (of_property_read_bool(dev->of_node, "realtek,aldps-enable"))
+		priv->phycr1 |= RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_ENABLE | RTL8211F_ALDPS_XTAL_OFF;
+
+	priv->has_phycr2 = !(phy_id == RTL_8211FVD_PHYID);
+	if (priv->has_phycr2) {
+		ret = phy_read_paged(phydev, 0xa43, RTL8211F_PHYCR2);
+		if (ret < 0)
+			return ret;
+
+		priv->phycr2 = ret & RTL8211F_CLKOUT_EN;
+		if (of_property_read_bool(dev->of_node, "realtek,clkout-disable"))
+			priv->phycr2 &= ~RTL8211F_CLKOUT_EN;
+	}
+
+	phydev->priv = priv;
+
+	return 0;
+}
+
+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;
+	int err;
+
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+		err = rtl8201_ack_interrupt(phydev);
+		if (err)
+			return err;
+
+		val = BIT(13) | BIT(12) | BIT(11);
+		err = phy_write_paged(phydev, 0x7, RTL8201F_IER, val);
+	} else {
+		val = 0;
+		err = phy_write_paged(phydev, 0x7, RTL8201F_IER, val);
+		if (err)
+			return err;
+
+		err = rtl8201_ack_interrupt(phydev);
+	}
+
+	return err;
+}
+
+static int rtl8211b_config_intr(struct phy_device *phydev)
+{
+	int err;
+
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+		err = rtl821x_ack_interrupt(phydev);
+		if (err)
+			return err;
+
+		err = phy_write(phydev, RTL821x_INER,
+				RTL8211B_INER_INIT);
+	} else {
+		err = phy_write(phydev, RTL821x_INER, 0);
+		if (err)
+			return err;
+
+		err = rtl821x_ack_interrupt(phydev);
+	}
+
+	return err;
+}
+
+static int rtl8211e_config_intr(struct phy_device *phydev)
+{
+	int err;
+
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+		err = rtl821x_ack_interrupt(phydev);
+		if (err)
+			return err;
+
+		err = phy_write(phydev, RTL821x_INER,
+				RTL8211E_INER_LINK_STATUS);
+	} else {
+		err = phy_write(phydev, RTL821x_INER, 0);
+		if (err)
+			return err;
+
+		err = rtl821x_ack_interrupt(phydev);
+	}
+
+	return err;
+}
+
+static int rtl8211f_config_intr(struct phy_device *phydev)
+{
+	u16 val;
+	int err;
+
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+		err = rtl8211f_ack_interrupt(phydev);
+		if (err)
+			return err;
+
+		val = RTL8211F_INER_LINK_STATUS;
+		err = phy_write_paged(phydev, 0xa42, RTL821x_INER, val);
+	} else {
+		val = 0;
+		err = phy_write_paged(phydev, 0xa42, RTL821x_INER, val);
+		if (err)
+			return err;
+
+		err = rtl8211f_ack_interrupt(phydev);
+	}
+
+	return err;
+}
+
+static irqreturn_t rtl8201_handle_interrupt(struct phy_device *phydev)
+{
+	int irq_status;
+
+	irq_status = phy_read(phydev, RTL8201F_ISR);
+	if (irq_status < 0) {
+		phy_error(phydev);
+		return IRQ_NONE;
+	}
+
+	if (!(irq_status & RTL8201F_ISR_MASK))
+		return IRQ_NONE;
+
+	phy_trigger_machine(phydev);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t rtl821x_handle_interrupt(struct phy_device *phydev)
+{
+	int irq_status, irq_enabled;
+
+	irq_status = phy_read(phydev, RTL821x_INSR);
+	if (irq_status < 0) {
+		phy_error(phydev);
+		return IRQ_NONE;
+	}
+
+	irq_enabled = phy_read(phydev, RTL821x_INER);
+	if (irq_enabled < 0) {
+		phy_error(phydev);
+		return IRQ_NONE;
+	}
+
+	if (!(irq_status & irq_enabled))
+		return IRQ_NONE;
+
+	phy_trigger_machine(phydev);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t rtl8211f_handle_interrupt(struct phy_device *phydev)
+{
+	int irq_status;
+
+	irq_status = phy_read_paged(phydev, 0xa43, RTL8211F_INSR);
+	if (irq_status < 0) {
+		phy_error(phydev);
+		return IRQ_NONE;
+	}
+
+	if (!(irq_status & RTL8211F_INER_LINK_STATUS))
+		return IRQ_NONE;
+
+	phy_trigger_machine(phydev);
+
+	return IRQ_HANDLED;
+}
+
+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 rtl821x_priv *priv = phydev->priv;
+	struct device *dev = &phydev->mdio.dev;
+	u16 val_txdly, val_rxdly;
+	int ret;
+
+	ret = phy_modify_paged_changed(phydev, 0xa43, RTL8211F_PHYCR1,
+				       RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_ENABLE | RTL8211F_ALDPS_XTAL_OFF,
+				       priv->phycr1);
+	if (ret < 0) {
+		dev_err(dev, "aldps mode  configuration failed: %pe\n",
+			ERR_PTR(ret));
+		return ret;
+	}
+
+	switch (phydev->interface) {
+	case PHY_INTERFACE_MODE_RGMII:
+		val_txdly = 0;
+		val_rxdly = 0;
+		break;
+
+	case PHY_INTERFACE_MODE_RGMII_RXID:
+		val_txdly = 0;
+		val_rxdly = RTL8211F_RX_DELAY;
+		break;
+
+	case PHY_INTERFACE_MODE_RGMII_TXID:
+		val_txdly = RTL8211F_TX_DELAY;
+		val_rxdly = 0;
+		break;
+
+	case PHY_INTERFACE_MODE_RGMII_ID:
+		val_txdly = RTL8211F_TX_DELAY;
+		val_rxdly = RTL8211F_RX_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_txdly);
+	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_txdly ? "Enabling" : "Disabling");
+	} else {
+		dev_dbg(dev,
+			"2ns TX delay was already %s (by pin-strapping RXD1 or bootloader configuration)\n",
+			val_txdly ? "enabled" : "disabled");
+	}
+
+	ret = phy_modify_paged_changed(phydev, 0xd08, 0x15, RTL8211F_RX_DELAY,
+				       val_rxdly);
+	if (ret < 0) {
+		dev_err(dev, "Failed to update the RX delay register\n");
+		return ret;
+	} else if (ret) {
+		dev_dbg(dev,
+			"%s 2ns RX delay (and changing the value from pin-strapping RXD0 or the bootloader)\n",
+			val_rxdly ? "Enabling" : "Disabling");
+	} else {
+		dev_dbg(dev,
+			"2ns RX delay was already %s (by pin-strapping RXD0 or bootloader configuration)\n",
+			val_rxdly ? "enabled" : "disabled");
+	}
+
+	if (priv->has_phycr2) {
+		ret = phy_modify_paged(phydev, 0xa43, RTL8211F_PHYCR2,
+				       RTL8211F_CLKOUT_EN, priv->phycr2);
+		if (ret < 0) {
+			dev_err(dev, "clkout configuration failed: %pe\n",
+				ERR_PTR(ret));
+			return ret;
+		}
+	}
+
+	return genphy_soft_reset(phydev);
+}
+
+static int rtl821x_suspend(struct phy_device *phydev)
+{
+	struct rtl821x_priv *priv = phydev->priv;
+	int ret = 0;
+
+	if (!phydev->wol_enabled) {
+		ret = genphy_suspend(phydev);
+
+		if (ret)
+			return ret;
+
+		clk_disable_unprepare(priv->clk);
+	}
+
+	return ret;
+}
+
+static int rtl821x_resume(struct phy_device *phydev)
+{
+	struct rtl821x_priv *priv = phydev->priv;
+	int ret;
+
+	if (!phydev->wol_enabled)
+		clk_prepare_enable(priv->clk);
+
+	ret = genphy_resume(phydev);
+	if (ret < 0)
+		return ret;
+
+	msleep(20);
+
+	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 = RTL8211E_CTRL_DELAY | 0;
+		break;
+	case PHY_INTERFACE_MODE_RGMII_ID:
+		val = RTL8211E_CTRL_DELAY | RTL8211E_TX_DELAY | RTL8211E_RX_DELAY;
+		break;
+	case PHY_INTERFACE_MODE_RGMII_RXID:
+		val = RTL8211E_CTRL_DELAY | RTL8211E_RX_DELAY;
+		break;
+	case PHY_INTERFACE_MODE_RGMII_TXID:
+		val = RTL8211E_CTRL_DELAY | 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.
+	 * The configuration register definition:
+	 * 14 = reserved
+	 * 13 = Force Tx RX Delay controlled by bit12 bit11,
+	 * 12 = RX Delay, 11 = TX Delay
+	 * 10:0 = Test && debug settings reserved by realtek
+	 */
+	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_CTRL_DELAY
+			   | 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_status(struct phy_device *phydev)
+{
+	int ret;
+
+	ret = genphy_read_status(phydev);
+	if (ret < 0)
+		return ret;
+
+	return rtlgen_get_speed(phydev);
+}
+
+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 rtl822x_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 rtl822x_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 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 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;
+
+	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 rtl8226_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;
+}
+
+static int rtl9000a_config_init(struct phy_device *phydev)
+{
+	phydev->autoneg = AUTONEG_DISABLE;
+	phydev->speed = SPEED_100;
+	phydev->duplex = DUPLEX_FULL;
+
+	return 0;
+}
+
+static int rtl9000a_config_aneg(struct phy_device *phydev)
+{
+	int ret;
+	u16 ctl = 0;
+
+	switch (phydev->master_slave_set) {
+	case MASTER_SLAVE_CFG_MASTER_FORCE:
+		ctl |= CTL1000_AS_MASTER;
+		break;
+	case MASTER_SLAVE_CFG_SLAVE_FORCE:
+		break;
+	case MASTER_SLAVE_CFG_UNKNOWN:
+	case MASTER_SLAVE_CFG_UNSUPPORTED:
+		return 0;
+	default:
+		phydev_warn(phydev, "Unsupported Master/Slave mode\n");
+		return -EOPNOTSUPP;
+	}
+
+	ret = phy_modify_changed(phydev, MII_CTRL1000, CTL1000_AS_MASTER, ctl);
+	if (ret == 1)
+		ret = genphy_soft_reset(phydev);
+
+	return ret;
+}
+
+static int rtl9000a_read_status(struct phy_device *phydev)
+{
+	int ret;
+
+	phydev->master_slave_get = MASTER_SLAVE_CFG_UNKNOWN;
+	phydev->master_slave_state = MASTER_SLAVE_STATE_UNKNOWN;
+
+	ret = genphy_update_link(phydev);
+	if (ret)
+		return ret;
+
+	ret = phy_read(phydev, MII_CTRL1000);
+	if (ret < 0)
+		return ret;
+	if (ret & CTL1000_AS_MASTER)
+		phydev->master_slave_get = MASTER_SLAVE_CFG_MASTER_FORCE;
+	else
+		phydev->master_slave_get = MASTER_SLAVE_CFG_SLAVE_FORCE;
+
+	ret = phy_read(phydev, MII_STAT1000);
+	if (ret < 0)
+		return ret;
+	if (ret & LPA_1000MSRES)
+		phydev->master_slave_state = MASTER_SLAVE_STATE_MASTER;
+	else
+		phydev->master_slave_state = MASTER_SLAVE_STATE_SLAVE;
+
+	return 0;
+}
+
+static int rtl9000a_ack_interrupt(struct phy_device *phydev)
+{
+	int err;
+
+	err = phy_read(phydev, RTL8211F_INSR);
+
+	return (err < 0) ? err : 0;
+}
+
+static int rtl9000a_config_intr(struct phy_device *phydev)
+{
+	u16 val;
+	int err;
+
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+		err = rtl9000a_ack_interrupt(phydev);
+		if (err)
+			return err;
+
+		val = (u16)~RTL9000A_GINMR_LINK_STATUS;
+		err = phy_write_paged(phydev, 0xa42, RTL9000A_GINMR, val);
+	} else {
+		val = ~0;
+		err = phy_write_paged(phydev, 0xa42, RTL9000A_GINMR, val);
+		if (err)
+			return err;
+
+		err = rtl9000a_ack_interrupt(phydev);
+	}
+
+	return phy_write_paged(phydev, 0xa42, RTL9000A_GINMR, val);
+}
+
+static irqreturn_t rtl9000a_handle_interrupt(struct phy_device *phydev)
+{
+	int irq_status;
+
+	irq_status = phy_read(phydev, RTL8211F_INSR);
+	if (irq_status < 0) {
+		phy_error(phydev);
+		return IRQ_NONE;
+	}
+
+	if (!(irq_status & RTL8211F_INER_LINK_STATUS))
+		return IRQ_NONE;
+
+	phy_trigger_machine(phydev);
+
+	return IRQ_HANDLED;
+}
+
+static struct phy_driver realtek_drvs[] = {
+	{
+		PHY_ID_MATCH_EXACT(0x00008201),
+		.name           = "RTL8201CP Ethernet",
+		.read_page	= rtl821x_read_page,
+		.write_page	= rtl821x_write_page,
+	}, {
+		PHY_ID_MATCH_EXACT(0x001cc816),
+		.name		= "RTL8201F Fast Ethernet",
+		.config_intr	= &rtl8201_config_intr,
+		.handle_interrupt = rtl8201_handle_interrupt,
+		.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",
+		.config_intr	= &rtl8211b_config_intr,
+		.handle_interrupt = rtl821x_handle_interrupt,
+		.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",
+		.config_intr	= rtl8211e_config_intr,
+		.handle_interrupt = rtl821x_handle_interrupt,
+		.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,
+		.config_intr	= &rtl8211e_config_intr,
+		.handle_interrupt = rtl821x_handle_interrupt,
+		.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",
+		.probe		= rtl821x_probe,
+		.config_init	= &rtl8211f_config_init,
+		.read_status	= rtlgen_read_status,
+		.config_intr	= &rtl8211f_config_intr,
+		.handle_interrupt = rtl8211f_handle_interrupt,
+		.suspend	= rtl821x_suspend,
+		.resume		= rtl821x_resume,
+		.read_page	= rtl821x_read_page,
+		.write_page	= rtl821x_write_page,
+		.flags		= PHY_ALWAYS_CALL_SUSPEND,
+	}, {
+		PHY_ID_MATCH_EXACT(RTL_8211FVD_PHYID),
+		.name		= "RTL8211F-VD Gigabit Ethernet",
+		.probe		= rtl821x_probe,
+		.config_init	= &rtl8211f_config_init,
+		.read_status	= rtlgen_read_status,
+		.config_intr	= &rtl8211f_config_intr,
+		.handle_interrupt = rtl8211f_handle_interrupt,
+		.suspend	= rtl821x_suspend,
+		.resume		= rtl821x_resume,
+		.read_page	= rtl821x_read_page,
+		.write_page	= rtl821x_write_page,
+		.flags		= PHY_ALWAYS_CALL_SUSPEND,
+	}, {
+		.name		= "Generic FE-GE Realtek PHY",
+		.match_phy_device = rtlgen_match_phy_device,
+		.read_status	= rtlgen_read_status,
+		.suspend	= genphy_suspend,
+		.resume		= rtlgen_resume,
+		.read_page	= rtl821x_read_page,
+		.write_page	= rtl821x_write_page,
+		.read_mmd	= rtlgen_read_mmd,
+		.write_mmd	= rtlgen_write_mmd,
+	}, {
+		.name		= "RTL8226 2.5Gbps PHY",
+		.match_phy_device = rtl8226_match_phy_device,
+		.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(0x001cc840),
+		.name		= "RTL8226B_RTL8221B 2.5Gbps PHY",
+		.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(0x001cc838),
+		.name           = "RTL8226-CG 2.5Gbps PHY",
+		.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,
+	}, {
+		PHY_ID_MATCH_EXACT(0x001cc848),
+		.name           = "RTL8226B-CG_RTL8221B-CG 2.5Gbps PHY",
+		.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,
+	}, {
+		PHY_ID_MATCH_EXACT(0x001cc849),
+		.name           = "RTL8221B-VB-CG 2.5Gbps PHY",
+		.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,
+	}, {
+		PHY_ID_MATCH_EXACT(0x001cc84a),
+		.name           = "RTL8221B-VM-CG 2.5Gbps PHY",
+		.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,
+	}, {
+		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.
+		 */
+		.config_intr	= genphy_no_config_intr,
+		.handle_interrupt = genphy_handle_interrupt_no_ack,
+		.suspend	= genphy_suspend,
+		.resume		= genphy_resume,
+	}, {
+		PHY_ID_MATCH_EXACT(0x001ccb00),
+		.name		= "RTL9000AA_RTL9000AN Ethernet",
+		.features       = PHY_BASIC_T1_FEATURES,
+		.config_init	= rtl9000a_config_init,
+		.config_aneg	= rtl9000a_config_aneg,
+		.read_status	= rtl9000a_read_status,
+		.config_intr	= rtl9000a_config_intr,
+		.handle_interrupt = rtl9000a_handle_interrupt,
+		.suspend	= genphy_suspend,
+		.resume		= genphy_resume,
+		.read_page	= rtl821x_read_page,
+		.write_page	= rtl821x_write_page,
+	}, {
+		PHY_ID_MATCH_EXACT(0x001cc942),
+		.name		= "RTL8365MB-VC Gigabit Ethernet",
+		/* Interrupt handling analogous to RTL8366RB */
+		.config_intr	= genphy_no_config_intr,
+		.handle_interrupt = genphy_handle_interrupt_no_ack,
+		.suspend	= genphy_suspend,
+		.resume		= genphy_resume,
+	},
+};
+
+module_phy_driver(realtek_drvs);
+
+static const struct mdio_device_id __maybe_unused realtek_tbl[] = {
+	{ PHY_ID_MATCH_VENDOR(0x001cc800) },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(mdio, realtek_tbl);