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 48 MODULE_DESCRIPTION("Vitesse PHY driver"); 49 MODULE_AUTHOR("Kriston Carson"); 50 MODULE_LICENSE("GPL"); 51 52 static 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 66 static 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 73 static 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 */ 86 static struct phy_driver vsc8244_driver = { 87 .phy_id = 0x000fc6c2, 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 }; 99 100 static int __init vsc8244_init(void) 101 { 102 return phy_driver_register(&vsc8244_driver); 103 } 104 105 static void __exit vsc8244_exit(void) 106 { 107 phy_driver_unregister(&vsc8244_driver); 108 } 109 110 module_init(vsc8244_init); 111 module_exit(vsc8244_exit); 112