From ba9382cb01825180935292d6a51b5dfdcfd7136c Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Mon, 11 Mar 2019 14:01:02 +0100 Subject: realtek phy driver Signed-off-by: Sascha Hauer --- drivers/net/phy/Kconfig | 5 ++ drivers/net/phy/Makefile | 1 + drivers/net/phy/realtek.c | 172 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 178 insertions(+) create mode 100644 drivers/net/phy/realtek.c (limited to 'drivers') diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 0665aefd99..c08b8257a7 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -48,6 +48,11 @@ config NATIONAL_PHY ---help--- Currently supports the DP83865 PHY. +config REALTEK_PHY + bool "Driver for Realtek PHYs" + ---help--- + Supports the Realtek 821x PHY. + config SMSC_PHY bool "Drivers for SMSC PHYs" ---help--- diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 5dd9bd5fd3..7053b5762c 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_LXT_PHY) += lxt.o obj-$(CONFIG_MARVELL_PHY) += marvell.o obj-$(CONFIG_MICREL_PHY) += micrel.o obj-$(CONFIG_NATIONAL_PHY) += national.o +obj-$(CONFIG_REALTEK_PHY) += realtek.o obj-$(CONFIG_SMSC_PHY) += smsc.o obj-$(CONFIG_NET_DSA_MV88E6XXX) += mv88e6xxx/ diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c new file mode 100644 index 0000000000..4ae050128c --- /dev/null +++ b/drivers/net/phy/realtek.c @@ -0,0 +1,172 @@ +/* + * 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 +#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) + +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 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 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->dev, "error enabling power management\n"); + } + + return ret; +} + +static struct phy_driver realtek_drvs[] = { + { + PHY_ID_MATCH_EXACT(0x00008201), + .drv.name = "RTL8201CP Ethernet", + .features = PHY_BASIC_FEATURES, + }, { + PHY_ID_MATCH_EXACT(0x001cc816), + .drv.name = "RTL8201F Fast Ethernet", + .features = PHY_BASIC_FEATURES, + .read_page = rtl821x_read_page, + .write_page = rtl821x_write_page, + }, { + PHY_ID_MATCH_EXACT(0x001cc910), + .drv.name = "RTL8211 Gigabit Ethernet", + .features = PHY_GBIT_FEATURES, + .config_aneg = rtl8211_config_aneg, + }, { + PHY_ID_MATCH_EXACT(0x001cc912), + .drv.name = "RTL8211B Gigabit Ethernet", + .features = PHY_GBIT_FEATURES, + }, { + PHY_ID_MATCH_EXACT(0x001cc913), + .drv.name = "RTL8211C Gigabit Ethernet", + .features = PHY_GBIT_FEATURES, + .config_init = rtl8211c_config_init, + }, { + PHY_ID_MATCH_EXACT(0x001cc914), + .drv.name = "RTL8211DN Gigabit Ethernet", + .features = PHY_GBIT_FEATURES, + }, { + PHY_ID_MATCH_EXACT(0x001cc915), + .drv.name = "RTL8211E Gigabit Ethernet", + .features = PHY_GBIT_FEATURES, + }, { + PHY_ID_MATCH_EXACT(0x001cc916), + .drv.name = "RTL8211F Gigabit Ethernet", + .features = PHY_GBIT_FEATURES, + .config_init = &rtl8211f_config_init, + .read_page = rtl821x_read_page, + .write_page = rtl821x_write_page, + }, { + PHY_ID_MATCH_EXACT(0x001cc961), + .drv.name = "RTL8366RB Gigabit Ethernet", + .features = PHY_GBIT_FEATURES, + .config_init = &rtl8366rb_config_init, + }, +}; + +static int __init realtek_phy_init(void) +{ + return phy_drivers_register(realtek_drvs, + ARRAY_SIZE(realtek_drvs)); +} +fs_initcall(realtek_phy_init); -- cgit v1.2.3