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/config.h> 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/mii.h> 19 #include <linux/ethtool.h> 20 #include <linux/phy.h> 21 22 /* Vitesse Extended Control Register 1 */ 23 #define MII_VSC8244_EXT_CON1 0x17 24 #define MII_VSC8244_EXTCON1_INIT 0x0000 25 26 /* Vitesse Interrupt Mask Register */ 27 #define MII_VSC8244_IMASK 0x19 28 #define MII_VSC8244_IMASK_IEN 0x8000 29 #define MII_VSC8244_IMASK_SPEED 0x4000 30 #define MII_VSC8244_IMASK_LINK 0x2000 31 #define MII_VSC8244_IMASK_DUPLEX 0x1000 32 #define MII_VSC8244_IMASK_MASK 0xf000 33 34 /* Vitesse Interrupt Status Register */ 35 #define MII_VSC8244_ISTAT 0x1a 36 #define MII_VSC8244_ISTAT_STATUS 0x8000 37 #define MII_VSC8244_ISTAT_SPEED 0x4000 38 #define MII_VSC8244_ISTAT_LINK 0x2000 39 #define MII_VSC8244_ISTAT_DUPLEX 0x1000 40 41 /* Vitesse Auxiliary Control/Status Register */ 42 #define MII_VSC8244_AUX_CONSTAT 0x1c 43 #define MII_VSC8244_AUXCONSTAT_INIT 0x0004 44 #define MII_VSC8244_AUXCONSTAT_DUPLEX 0x0020 45 #define MII_VSC8244_AUXCONSTAT_SPEED 0x0018 46 #define MII_VSC8244_AUXCONSTAT_GBIT 0x0010 47 #define MII_VSC8244_AUXCONSTAT_100 0x0008 48 49 MODULE_DESCRIPTION("Vitesse PHY driver"); 50 MODULE_AUTHOR("Kriston Carson"); 51 MODULE_LICENSE("GPL"); 52 53 static int vsc824x_config_init(struct phy_device *phydev) 54 { 55 int err; 56 57 err = phy_write(phydev, MII_VSC8244_AUX_CONSTAT, 58 MII_VSC8244_AUXCONSTAT_INIT); 59 if (err < 0) 60 return err; 61 62 err = phy_write(phydev, MII_VSC8244_EXT_CON1, 63 MII_VSC8244_EXTCON1_INIT); 64 return err; 65 } 66 67 static int vsc824x_ack_interrupt(struct phy_device *phydev) 68 { 69 int err = phy_read(phydev, MII_VSC8244_ISTAT); 70 71 return (err < 0) ? err : 0; 72 } 73 74 static int vsc824x_config_intr(struct phy_device *phydev) 75 { 76 int err; 77 78 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) 79 err = phy_write(phydev, MII_VSC8244_IMASK, 80 MII_VSC8244_IMASK_MASK); 81 else 82 err = phy_write(phydev, MII_VSC8244_IMASK, 0); 83 return err; 84 } 85 86 /* Vitesse 824x */ 87 static struct phy_driver vsc8244_driver = { 88 .phy_id = 0x000fc6c2, 89 .name = "Vitesse VSC8244", 90 .phy_id_mask = 0x000fffc0, 91 .features = PHY_GBIT_FEATURES, 92 .flags = PHY_HAS_INTERRUPT, 93 .config_init = &vsc824x_config_init, 94 .config_aneg = &genphy_config_aneg, 95 .read_status = &genphy_read_status, 96 .ack_interrupt = &vsc824x_ack_interrupt, 97 .config_intr = &vsc824x_config_intr, 98 .driver = { .owner = THIS_MODULE,}, 99 }; 100 101 static int __init vsc8244_init(void) 102 { 103 return phy_driver_register(&vsc8244_driver); 104 } 105 106 static void __exit vsc8244_exit(void) 107 { 108 phy_driver_unregister(&vsc8244_driver); 109 } 110 111 module_init(vsc8244_init); 112 module_exit(vsc8244_exit); 113