/* * drivers/net/phy/lxt.c * * Driver for Intel LXT PHYs * * Author: Andy Fleming * * 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 <linux/kernel.h> #include <linux/string.h> #include <linux/errno.h> #include <linux/unistd.h> #include <linux/interrupt.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/spinlock.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/mii.h> #include <linux/ethtool.h> #include <linux/phy.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/uaccess.h> /* The Level one LXT970 is used by many boards */ #define MII_LXT970_IER 17 /* Interrupt Enable Register */ #define MII_LXT970_IER_IEN 0x0002 #define MII_LXT970_ISR 18 /* Interrupt Status Register */ #define MII_LXT970_CONFIG 19 /* Configuration Register */ /* ------------------------------------------------------------------------- */ /* The Level one LXT971 is used on some of my custom boards */ /* register definitions for the 971 */ #define MII_LXT971_IER 18 /* Interrupt Enable Register */ #define MII_LXT971_IER_IEN 0x00f2 #define MII_LXT971_ISR 19 /* Interrupt Status Register */ /* register definitions for the 973 */ #define MII_LXT973_PCR 16 /* Port Configuration Register */ #define PCR_FIBER_SELECT 1 MODULE_DESCRIPTION("Intel LXT PHY driver"); MODULE_AUTHOR("Andy Fleming"); MODULE_LICENSE("GPL"); static int lxt970_ack_interrupt(struct phy_device *phydev) { int err; err = phy_read(phydev, MII_BMSR); if (err < 0) return err; err = phy_read(phydev, MII_LXT970_ISR); if (err < 0) return err; return 0; } static int lxt970_config_intr(struct phy_device *phydev) { int err; if(phydev->interrupts == PHY_INTERRUPT_ENABLED) err = phy_write(phydev, MII_LXT970_IER, MII_LXT970_IER_IEN); else err = phy_write(phydev, MII_LXT970_IER, 0); return err; } static int lxt970_config_init(struct phy_device *phydev) { int err; err = phy_write(phydev, MII_LXT970_CONFIG, 0); return err; } static int lxt971_ack_interrupt(struct phy_device *phydev) { int err = phy_read(phydev, MII_LXT971_ISR); if (err < 0) return err; return 0; } static int lxt971_config_intr(struct phy_device *phydev) { int err; if(phydev->interrupts == PHY_INTERRUPT_ENABLED) err = phy_write(phydev, MII_LXT971_IER, MII_LXT971_IER_IEN); else err = phy_write(phydev, MII_LXT971_IER, 0); return err; } static int lxt973_probe(struct phy_device *phydev) { int val = phy_read(phydev, MII_LXT973_PCR); if (val & PCR_FIBER_SELECT) { /* * If fiber is selected, then the only correct setting * is 100Mbps, full duplex, and auto negotiation off. */ val = phy_read(phydev, MII_BMCR); val |= (BMCR_SPEED100 | BMCR_FULLDPLX); val &= ~BMCR_ANENABLE; phy_write(phydev, MII_BMCR, val); /* Remember that the port is in fiber mode. */ phydev->priv = lxt973_probe; } else { phydev->priv = NULL; } return 0; } static int lxt973_config_aneg(struct phy_device *phydev) { /* Do nothing if port is in fiber mode. */ return phydev->priv ? 0 : genphy_config_aneg(phydev); } static struct phy_driver lxt970_driver = { .phy_id = 0x78100000, .name = "LXT970", .phy_id_mask = 0xfffffff0, .features = PHY_BASIC_FEATURES, .flags = PHY_HAS_INTERRUPT, .config_init = lxt970_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = lxt970_ack_interrupt, .config_intr = lxt970_config_intr, .driver = { .owner = THIS_MODULE,}, }; static struct phy_driver lxt971_driver = { .phy_id = 0x001378e0, .name = "LXT971", .phy_id_mask = 0xfffffff0, .features = PHY_BASIC_FEATURES, .flags = PHY_HAS_INTERRUPT, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = lxt971_ack_interrupt, .config_intr = lxt971_config_intr, .driver = { .owner = THIS_MODULE,}, }; static struct phy_driver lxt973_driver = { .phy_id = 0x00137a10, .name = "LXT973", .phy_id_mask = 0xfffffff0, .features = PHY_BASIC_FEATURES, .flags = 0, .probe = lxt973_probe, .config_aneg = lxt973_config_aneg, .read_status = genphy_read_status, .driver = { .owner = THIS_MODULE,}, }; static int __init lxt_init(void) { int ret; ret = phy_driver_register(&lxt970_driver); if (ret) goto err1; ret = phy_driver_register(&lxt971_driver); if (ret) goto err2; ret = phy_driver_register(&lxt973_driver); if (ret) goto err3; return 0; err3: phy_driver_unregister(&lxt971_driver); err2: phy_driver_unregister(&lxt970_driver); err1: return ret; } static void __exit lxt_exit(void) { phy_driver_unregister(&lxt970_driver); phy_driver_unregister(&lxt971_driver); phy_driver_unregister(&lxt973_driver); } module_init(lxt_init); module_exit(lxt_exit); static struct mdio_device_id __maybe_unused lxt_tbl[] = { { 0x78100000, 0xfffffff0 }, { 0x001378e0, 0xfffffff0 }, { 0x00137a10, 0xfffffff0 }, { } }; MODULE_DEVICE_TABLE(mdio, lxt_tbl);