1/* 2 * Driver for Vitesse PHYs 3 * 4 * Author: Kriston Carson 5 * 6 * Copyright (c) 2005 Freescale Semiconductor, Inc. 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or (at your 11 * option) any later version. 12 * 13 */ 14 15#include <linux/kernel.h> 16#include <linux/module.h> 17#include <linux/mii.h> 18#include <linux/ethtool.h> 19#include <linux/phy.h> 20 21/* Vitesse Extended Control Register 1 */ 22#define MII_VSC8244_EXT_CON1 0x17 23#define MII_VSC8244_EXTCON1_INIT 0x0000 24 25/* Vitesse Interrupt Mask Register */ 26#define MII_VSC8244_IMASK 0x19 27#define MII_VSC8244_IMASK_IEN 0x8000 28#define MII_VSC8244_IMASK_SPEED 0x4000 29#define MII_VSC8244_IMASK_LINK 0x2000 30#define MII_VSC8244_IMASK_DUPLEX 0x1000 31#define MII_VSC8244_IMASK_MASK 0xf000 32 33/* Vitesse Interrupt Status Register */ 34#define MII_VSC8244_ISTAT 0x1a 35#define MII_VSC8244_ISTAT_STATUS 0x8000 36#define MII_VSC8244_ISTAT_SPEED 0x4000 37#define MII_VSC8244_ISTAT_LINK 0x2000 38#define MII_VSC8244_ISTAT_DUPLEX 0x1000 39 40/* Vitesse Auxiliary Control/Status Register */ 41#define MII_VSC8244_AUX_CONSTAT 0x1c 42#define MII_VSC8244_AUXCONSTAT_INIT 0x0004 43#define MII_VSC8244_AUXCONSTAT_DUPLEX 0x0020 44#define MII_VSC8244_AUXCONSTAT_SPEED 0x0018 45#define MII_VSC8244_AUXCONSTAT_GBIT 0x0010 46#define MII_VSC8244_AUXCONSTAT_100 0x0008 47 48MODULE_DESCRIPTION("Vitesse PHY driver"); 49MODULE_AUTHOR("Kriston Carson"); 50MODULE_LICENSE("GPL"); 51 52static int vsc824x_config_init(struct phy_device *phydev) 53{ 54 int err; 55 56 err = phy_write(phydev, MII_VSC8244_AUX_CONSTAT, 57 MII_VSC8244_AUXCONSTAT_INIT); 58 if (err < 0) 59 return err; 60 61 err = phy_write(phydev, MII_VSC8244_EXT_CON1, 62 MII_VSC8244_EXTCON1_INIT); 63 return err; 64} 65 66static int vsc824x_ack_interrupt(struct phy_device *phydev) 67{ 68 int err = phy_read(phydev, MII_VSC8244_ISTAT); 69 70 return (err < 0) ? err : 0; 71} 72 73static int vsc824x_config_intr(struct phy_device *phydev) 74{ 75 int err; 76 77 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) 78 err = phy_write(phydev, MII_VSC8244_IMASK, 79 MII_VSC8244_IMASK_MASK); 80 else 81 err = phy_write(phydev, MII_VSC8244_IMASK, 0); 82 return err; 83} 84 85/* Vitesse 824x */ 86static struct phy_driver vsc8244_driver = { 87 .phy_id = 0x000fc6c0, 88 .name = "Vitesse VSC8244", 89 .phy_id_mask = 0x000fffc0, 90 .features = PHY_GBIT_FEATURES, 91 .flags = PHY_HAS_INTERRUPT, 92 .config_init = &vsc824x_config_init, 93 .config_aneg = &genphy_config_aneg, 94 .read_status = &genphy_read_status, 95 .ack_interrupt = &vsc824x_ack_interrupt, 96 .config_intr = &vsc824x_config_intr, 97 .driver = { .owner = THIS_MODULE,}, 98}; 99 100static int __init vsc8244_init(void) 101{ 102 return phy_driver_register(&vsc8244_driver); 103} 104 105static void __exit vsc8244_exit(void) 106{ 107 phy_driver_unregister(&vsc8244_driver); 108} 109 110module_init(vsc8244_init); 111module_exit(vsc8244_exit); 112