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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 | /* * 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/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/IC1001 PHY drivers"); 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 ip1001_config_init(struct phy_device *phydev) { int err, value; /* Software Reset PHY */ value = phy_read(phydev, MII_BMCR); value |= BMCR_RESET; err = phy_write(phydev, MII_BMCR, value); if (err < 0) return err; do { value = phy_read(phydev, MII_BMCR); } while (value & BMCR_RESET); /* Additional delay (2ns) used to adjust RX clock phase * at GMII/ RGMII interface */ value = phy_read(phydev, 16); value |= 0x3; err = phy_write(phydev, 16, value); if (err < 0) return err; return err; } 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, .suspend = genphy_suspend, .resume = genphy_resume, .driver = { .owner = THIS_MODULE,}, }; static struct phy_driver ip1001_driver = { .phy_id = 0x02430d90, .name = "ICPlus IP1001", .phy_id_mask = 0x0ffffff0, .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .config_init = &ip1001_config_init, .config_aneg = &genphy_config_aneg, .read_status = &genphy_read_status, .suspend = genphy_suspend, .resume = genphy_resume, .driver = { .owner = THIS_MODULE,}, }; static int __init icplus_init(void) { int ret = 0; ret = phy_driver_register(&ip1001_driver); if (ret < 0) return -ENODEV; return phy_driver_register(&ip175c_driver); } static void __exit icplus_exit(void) { phy_driver_unregister(&ip1001_driver); phy_driver_unregister(&ip175c_driver); } module_init(icplus_init); module_exit(icplus_exit); static struct mdio_device_id __maybe_unused icplus_tbl[] = { { 0x02430d80, 0x0ffffff0 }, { 0x02430d90, 0x0ffffff0 }, { } }; MODULE_DEVICE_TABLE(mdio, icplus_tbl); |