| // 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> |
| |
| #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 |
| |
| MODULE_DESCRIPTION("Realtek PHY driver"); |
| MODULE_AUTHOR("Johnson Leung"); |
| MODULE_LICENSE("GPL"); |
| |
| struct rtl821x_priv { |
| u16 phycr1; |
| u16 phycr2; |
| }; |
| |
| 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; |
| int ret; |
| |
| priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); |
| if (!priv) |
| return -ENOMEM; |
| |
| 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; |
| |
| 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"); |
| } |
| |
| 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_resume(struct phy_device *phydev) |
| { |
| int ret; |
| |
| 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 = genphy_suspend, |
| .resume = rtl821x_resume, |
| .read_page = rtl821x_read_page, |
| .write_page = rtl821x_write_page, |
| }, { |
| .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, |
| }, |
| }; |
| |
| 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); |
