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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | /* * Driver for ICPlus PHYs * * Copyright (c) 2007 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/slab.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> MODULE_DESCRIPTION("ICPlus IP175C PHY driver"); MODULE_AUTHOR("Michael Barkowski"); MODULE_LICENSE("GPL"); static int ip175c_config_init(struct phy_device *phydev) { int err, i; static int full_reset_performed = 0; if (full_reset_performed == 0) { /* master reset */ err = phydev->bus->write(phydev->bus, 30, 0, 0x175c); if (err < 0) return err; /* ensure no bus delays overlap reset period */ err = phydev->bus->read(phydev->bus, 30, 0); /* data sheet specifies reset period is 2 msec */ mdelay(2); /* enable IP175C mode */ err = phydev->bus->write(phydev->bus, 29, 31, 0x175c); if (err < 0) return err; /* Set MII0 speed and duplex (in PHY mode) */ err = phydev->bus->write(phydev->bus, 29, 22, 0x420); if (err < 0) return err; /* reset switch ports */ for (i = 0; i < 5; i++) { err = phydev->bus->write(phydev->bus, i, MII_BMCR, BMCR_RESET); if (err < 0) return err; } for (i = 0; i < 5; i++) err = phydev->bus->read(phydev->bus, i, MII_BMCR); mdelay(2); full_reset_performed = 1; } if (phydev->addr != 4) { phydev->state = PHY_RUNNING; phydev->speed = SPEED_100; phydev->duplex = DUPLEX_FULL; phydev->link = 1; netif_carrier_on(phydev->attached_dev); } return 0; } static int ip175c_read_status(struct phy_device *phydev) { if (phydev->addr == 4) /* WAN port */ genphy_read_status(phydev); else /* Don't need to read status for switch ports */ phydev->irq = PHY_IGNORE_INTERRUPT; return 0; } static int ip175c_config_aneg(struct phy_device *phydev) { if (phydev->addr == 4) /* WAN port */ genphy_config_aneg(phydev); return 0; } static struct phy_driver ip175c_driver = { .phy_id = 0x02430d80, .name = "ICPlus IP175C", .phy_id_mask = 0x0ffffff0, .features = PHY_BASIC_FEATURES, .config_init = &ip175c_config_init, .config_aneg = &ip175c_config_aneg, .read_status = &ip175c_read_status, .driver = { .owner = THIS_MODULE,}, }; static int __init ip175c_init(void) { return phy_driver_register(&ip175c_driver); } static void __exit ip175c_exit(void) { phy_driver_unregister(&ip175c_driver); } module_init(ip175c_init); module_exit(ip175c_exit); |