Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Driver for ICPlus PHYs |
| 3 | * |
| 4 | * Copyright (c) 2007 Freescale Semiconductor, Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your |
| 9 | * option) any later version. |
| 10 | * |
| 11 | */ |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/string.h> |
| 14 | #include <linux/errno.h> |
| 15 | #include <linux/unistd.h> |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 16 | #include <linux/interrupt.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/delay.h> |
| 19 | #include <linux/netdevice.h> |
| 20 | #include <linux/etherdevice.h> |
| 21 | #include <linux/skbuff.h> |
| 22 | #include <linux/spinlock.h> |
| 23 | #include <linux/mm.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/mii.h> |
| 26 | #include <linux/ethtool.h> |
| 27 | #include <linux/phy.h> |
| 28 | |
| 29 | #include <asm/io.h> |
| 30 | #include <asm/irq.h> |
| 31 | #include <asm/uaccess.h> |
| 32 | |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 33 | MODULE_DESCRIPTION("ICPlus IP175C/IC1001 PHY drivers"); |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 34 | MODULE_AUTHOR("Michael Barkowski"); |
| 35 | MODULE_LICENSE("GPL"); |
| 36 | |
| 37 | static int ip175c_config_init(struct phy_device *phydev) |
| 38 | { |
| 39 | int err, i; |
| 40 | static int full_reset_performed = 0; |
| 41 | |
| 42 | if (full_reset_performed == 0) { |
| 43 | |
| 44 | /* master reset */ |
| 45 | err = phydev->bus->write(phydev->bus, 30, 0, 0x175c); |
| 46 | if (err < 0) |
| 47 | return err; |
| 48 | |
| 49 | /* ensure no bus delays overlap reset period */ |
| 50 | err = phydev->bus->read(phydev->bus, 30, 0); |
| 51 | |
| 52 | /* data sheet specifies reset period is 2 msec */ |
| 53 | mdelay(2); |
| 54 | |
| 55 | /* enable IP175C mode */ |
| 56 | err = phydev->bus->write(phydev->bus, 29, 31, 0x175c); |
| 57 | if (err < 0) |
| 58 | return err; |
| 59 | |
| 60 | /* Set MII0 speed and duplex (in PHY mode) */ |
| 61 | err = phydev->bus->write(phydev->bus, 29, 22, 0x420); |
| 62 | if (err < 0) |
| 63 | return err; |
| 64 | |
| 65 | /* reset switch ports */ |
| 66 | for (i = 0; i < 5; i++) { |
| 67 | err = phydev->bus->write(phydev->bus, i, |
| 68 | MII_BMCR, BMCR_RESET); |
| 69 | if (err < 0) |
| 70 | return err; |
| 71 | } |
| 72 | |
| 73 | for (i = 0; i < 5; i++) |
| 74 | err = phydev->bus->read(phydev->bus, i, MII_BMCR); |
| 75 | |
| 76 | mdelay(2); |
| 77 | |
| 78 | full_reset_performed = 1; |
| 79 | } |
| 80 | |
| 81 | if (phydev->addr != 4) { |
| 82 | phydev->state = PHY_RUNNING; |
| 83 | phydev->speed = SPEED_100; |
| 84 | phydev->duplex = DUPLEX_FULL; |
| 85 | phydev->link = 1; |
| 86 | netif_carrier_on(phydev->attached_dev); |
| 87 | } |
| 88 | |
| 89 | return 0; |
| 90 | } |
| 91 | |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 92 | static int ip1001_config_init(struct phy_device *phydev) |
| 93 | { |
| 94 | int err, value; |
| 95 | |
| 96 | /* Software Reset PHY */ |
| 97 | value = phy_read(phydev, MII_BMCR); |
| 98 | value |= BMCR_RESET; |
| 99 | err = phy_write(phydev, MII_BMCR, value); |
| 100 | if (err < 0) |
| 101 | return err; |
| 102 | |
| 103 | do { |
| 104 | value = phy_read(phydev, MII_BMCR); |
| 105 | } while (value & BMCR_RESET); |
| 106 | |
| 107 | /* Additional delay (2ns) used to adjust RX clock phase |
| 108 | * at GMII/ RGMII interface */ |
| 109 | value = phy_read(phydev, 16); |
| 110 | value |= 0x3; |
| 111 | |
| 112 | err = phy_write(phydev, 16, value); |
| 113 | if (err < 0) |
| 114 | return err; |
| 115 | |
| 116 | return err; |
| 117 | } |
| 118 | |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 119 | static int ip175c_read_status(struct phy_device *phydev) |
| 120 | { |
| 121 | if (phydev->addr == 4) /* WAN port */ |
| 122 | genphy_read_status(phydev); |
| 123 | else |
| 124 | /* Don't need to read status for switch ports */ |
| 125 | phydev->irq = PHY_IGNORE_INTERRUPT; |
| 126 | |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | static int ip175c_config_aneg(struct phy_device *phydev) |
| 131 | { |
| 132 | if (phydev->addr == 4) /* WAN port */ |
| 133 | genphy_config_aneg(phydev); |
| 134 | |
| 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | static struct phy_driver ip175c_driver = { |
| 139 | .phy_id = 0x02430d80, |
| 140 | .name = "ICPlus IP175C", |
| 141 | .phy_id_mask = 0x0ffffff0, |
| 142 | .features = PHY_BASIC_FEATURES, |
| 143 | .config_init = &ip175c_config_init, |
| 144 | .config_aneg = &ip175c_config_aneg, |
| 145 | .read_status = &ip175c_read_status, |
Giuseppe Cavallaro | dab1086 | 2010-07-20 13:24:25 -0700 | [diff] [blame] | 146 | .suspend = genphy_suspend, |
| 147 | .resume = genphy_resume, |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 148 | .driver = { .owner = THIS_MODULE,}, |
| 149 | }; |
| 150 | |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 151 | static struct phy_driver ip1001_driver = { |
| 152 | .phy_id = 0x02430d90, |
| 153 | .name = "ICPlus IP1001", |
| 154 | .phy_id_mask = 0x0ffffff0, |
| 155 | .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | |
| 156 | SUPPORTED_Asym_Pause, |
| 157 | .config_init = &ip1001_config_init, |
| 158 | .config_aneg = &genphy_config_aneg, |
| 159 | .read_status = &genphy_read_status, |
| 160 | .suspend = genphy_suspend, |
| 161 | .resume = genphy_resume, |
| 162 | .driver = { .owner = THIS_MODULE,}, |
| 163 | }; |
| 164 | |
| 165 | static int __init icplus_init(void) |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 166 | { |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 167 | int ret = 0; |
| 168 | |
| 169 | ret = phy_driver_register(&ip1001_driver); |
| 170 | if (ret < 0) |
| 171 | return -ENODEV; |
| 172 | |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 173 | return phy_driver_register(&ip175c_driver); |
| 174 | } |
| 175 | |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 176 | static void __exit icplus_exit(void) |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 177 | { |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 178 | phy_driver_unregister(&ip1001_driver); |
Michael Barkowski | 0cefeeb | 2007-05-11 18:24:51 -0500 | [diff] [blame] | 179 | phy_driver_unregister(&ip175c_driver); |
| 180 | } |
| 181 | |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 182 | module_init(icplus_init); |
| 183 | module_exit(icplus_exit); |
David Woodhouse | 4e4f10f | 2010-04-02 01:05:56 +0000 | [diff] [blame] | 184 | |
Uwe Kleine-König | cf93c94 | 2010-10-03 23:43:32 +0000 | [diff] [blame] | 185 | static struct mdio_device_id __maybe_unused icplus_tbl[] = { |
David Woodhouse | 4e4f10f | 2010-04-02 01:05:56 +0000 | [diff] [blame] | 186 | { 0x02430d80, 0x0ffffff0 }, |
Giuseppe CAVALLARO | 377ecca | 2010-12-08 23:05:13 +0000 | [diff] [blame] | 187 | { 0x02430d90, 0x0ffffff0 }, |
David Woodhouse | 4e4f10f | 2010-04-02 01:05:56 +0000 | [diff] [blame] | 188 | { } |
| 189 | }; |
| 190 | |
| 191 | MODULE_DEVICE_TABLE(mdio, icplus_tbl); |