/* * drivers/net/phy/realtek.c * * Driver for Realtek PHYs * * Author: Johnson Leung * * Copyright (c) 2004 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * */ #include #include #include #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_PAGE_SELECT 0x1f #define RTL8211F_INSR 0x1d #define RTL8211F_TX_DELAY BIT(8) #define RTL8201F_ISR 0x1e #define RTL8201F_IER 0x13 #define RTL8366RB_POWER_SAVE 0x15 #define RTL8366RB_POWER_SAVE_ON BIT(12) 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 */ phy_set_bits(phydev, MII_CTRL1000, CTL1000_ENABLE_MASTER | CTL1000_AS_MASTER); return genphy_config_init(phydev); } static int rtl8211f_config_init(struct phy_device *phydev) { int ret; u16 val = 0; ret = genphy_config_init(phydev); if (ret < 0) return ret; /* enable TX-delay for rgmii-id and rgmii-txid, otherwise disable it */ if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID || phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) val = RTL8211F_TX_DELAY; return phy_modify_paged(phydev, 0xd08, 0x11, RTL8211F_TX_DELAY, val); } 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 = genphy_config_init(phydev); if (ret < 0) return 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; } static struct phy_driver realtek_drvs[] = { { .phy_id = 0x00008201, .name = "RTL8201CP Ethernet", .phy_id_mask = 0x0000ffff, .features = PHY_BASIC_FEATURES, .flags = PHY_HAS_INTERRUPT, }, { .phy_id = 0x001cc816, .name = "RTL8201F 10/100Mbps Ethernet", .phy_id_mask = 0x001fffff, .features = PHY_BASIC_FEATURES, .flags = PHY_HAS_INTERRUPT, .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 = 0x001cc910, .name = "RTL8211 Gigabit Ethernet", .phy_id_mask = 0x001fffff, .features = PHY_GBIT_FEATURES, .config_aneg = rtl8211_config_aneg, .read_mmd = &genphy_read_mmd_unsupported, .write_mmd = &genphy_write_mmd_unsupported, }, { .phy_id = 0x001cc912, .name = "RTL8211B Gigabit Ethernet", .phy_id_mask = 0x001fffff, .features = PHY_GBIT_FEATURES, .flags = PHY_HAS_INTERRUPT, .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, }, { .phy_id = 0x001cc913, .name = "RTL8211C Gigabit Ethernet", .phy_id_mask = 0x001fffff, .features = PHY_GBIT_FEATURES, .config_init = rtl8211c_config_init, .read_mmd = &genphy_read_mmd_unsupported, .write_mmd = &genphy_write_mmd_unsupported, }, { .phy_id = 0x001cc914, .name = "RTL8211DN Gigabit Ethernet", .phy_id_mask = 0x001fffff, .features = PHY_GBIT_FEATURES, .flags = PHY_HAS_INTERRUPT, .ack_interrupt = rtl821x_ack_interrupt, .config_intr = rtl8211e_config_intr, .suspend = genphy_suspend, .resume = genphy_resume, }, { .phy_id = 0x001cc915, .name = "RTL8211E Gigabit Ethernet", .phy_id_mask = 0x001fffff, .features = PHY_GBIT_FEATURES, .flags = PHY_HAS_INTERRUPT, .ack_interrupt = &rtl821x_ack_interrupt, .config_intr = &rtl8211e_config_intr, .suspend = genphy_suspend, .resume = genphy_resume, }, { .phy_id = 0x001cc916, .name = "RTL8211F Gigabit Ethernet", .phy_id_mask = 0x001fffff, .features = PHY_GBIT_FEATURES, .flags = PHY_HAS_INTERRUPT, .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, }, { .phy_id = 0x001cc961, .name = "RTL8366RB Gigabit Ethernet", .phy_id_mask = 0x001fffff, .features = PHY_GBIT_FEATURES, .flags = PHY_HAS_INTERRUPT, .config_init = &rtl8366rb_config_init, .suspend = genphy_suspend, .resume = genphy_resume, }, }; module_phy_driver(realtek_drvs); static struct mdio_device_id __maybe_unused realtek_tbl[] = { { 0x001cc816, 0x001fffff }, { 0x001cc910, 0x001fffff }, { 0x001cc912, 0x001fffff }, { 0x001cc913, 0x001fffff }, { 0x001cc914, 0x001fffff }, { 0x001cc915, 0x001fffff }, { 0x001cc916, 0x001fffff }, { 0x001cc961, 0x001fffff }, { } }; MODULE_DEVICE_TABLE(mdio, realtek_tbl);