Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 1 | /* |
| 2 | * drivers/net/phy/davicom.c |
| 3 | * |
| 4 | * Driver for Davicom PHYs |
| 5 | * |
| 6 | * Author: Andy Fleming |
| 7 | * |
| 8 | * Copyright (c) 2004 Freescale Semiconductor, Inc. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the |
| 12 | * Free Software Foundation; either version 2 of the License, or (at your |
| 13 | * option) any later version. |
| 14 | * |
| 15 | */ |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 16 | #include <linux/kernel.h> |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 17 | #include <linux/string.h> |
| 18 | #include <linux/errno.h> |
| 19 | #include <linux/unistd.h> |
| 20 | #include <linux/slab.h> |
| 21 | #include <linux/interrupt.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/delay.h> |
| 24 | #include <linux/netdevice.h> |
| 25 | #include <linux/etherdevice.h> |
| 26 | #include <linux/skbuff.h> |
| 27 | #include <linux/spinlock.h> |
| 28 | #include <linux/mm.h> |
| 29 | #include <linux/module.h> |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 30 | #include <linux/mii.h> |
| 31 | #include <linux/ethtool.h> |
| 32 | #include <linux/phy.h> |
| 33 | |
| 34 | #include <asm/io.h> |
| 35 | #include <asm/irq.h> |
| 36 | #include <asm/uaccess.h> |
| 37 | |
| 38 | #define MII_DM9161_SCR 0x10 |
| 39 | #define MII_DM9161_SCR_INIT 0x0610 |
| 40 | |
| 41 | /* DM9161 Interrupt Register */ |
| 42 | #define MII_DM9161_INTR 0x15 |
| 43 | #define MII_DM9161_INTR_PEND 0x8000 |
| 44 | #define MII_DM9161_INTR_DPLX_MASK 0x0800 |
| 45 | #define MII_DM9161_INTR_SPD_MASK 0x0400 |
| 46 | #define MII_DM9161_INTR_LINK_MASK 0x0200 |
| 47 | #define MII_DM9161_INTR_MASK 0x0100 |
| 48 | #define MII_DM9161_INTR_DPLX_CHANGE 0x0010 |
| 49 | #define MII_DM9161_INTR_SPD_CHANGE 0x0008 |
| 50 | #define MII_DM9161_INTR_LINK_CHANGE 0x0004 |
| 51 | #define MII_DM9161_INTR_INIT 0x0000 |
| 52 | #define MII_DM9161_INTR_STOP \ |
| 53 | (MII_DM9161_INTR_DPLX_MASK | MII_DM9161_INTR_SPD_MASK \ |
| 54 | | MII_DM9161_INTR_LINK_MASK | MII_DM9161_INTR_MASK) |
| 55 | |
| 56 | /* DM9161 10BT Configuration/Status */ |
| 57 | #define MII_DM9161_10BTCSR 0x12 |
| 58 | #define MII_DM9161_10BTCSR_INIT 0x7800 |
| 59 | |
| 60 | MODULE_DESCRIPTION("Davicom PHY driver"); |
| 61 | MODULE_AUTHOR("Andy Fleming"); |
| 62 | MODULE_LICENSE("GPL"); |
| 63 | |
| 64 | |
| 65 | #define DM9161_DELAY 1 |
| 66 | static int dm9161_config_intr(struct phy_device *phydev) |
| 67 | { |
| 68 | int temp; |
| 69 | |
| 70 | temp = phy_read(phydev, MII_DM9161_INTR); |
| 71 | |
| 72 | if (temp < 0) |
| 73 | return temp; |
| 74 | |
| 75 | if(PHY_INTERRUPT_ENABLED == phydev->interrupts ) |
| 76 | temp &= ~(MII_DM9161_INTR_STOP); |
| 77 | else |
| 78 | temp |= MII_DM9161_INTR_STOP; |
| 79 | |
| 80 | temp = phy_write(phydev, MII_DM9161_INTR, temp); |
| 81 | |
| 82 | return temp; |
| 83 | } |
| 84 | |
| 85 | static int dm9161_config_aneg(struct phy_device *phydev) |
| 86 | { |
| 87 | int err; |
| 88 | |
| 89 | /* Isolate the PHY */ |
| 90 | err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE); |
| 91 | |
| 92 | if (err < 0) |
| 93 | return err; |
| 94 | |
| 95 | /* Configure the new settings */ |
| 96 | err = genphy_config_aneg(phydev); |
| 97 | |
| 98 | if (err < 0) |
| 99 | return err; |
| 100 | |
| 101 | return 0; |
| 102 | } |
| 103 | |
| 104 | static int dm9161_config_init(struct phy_device *phydev) |
| 105 | { |
| 106 | int err; |
| 107 | |
| 108 | /* Isolate the PHY */ |
| 109 | err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE); |
| 110 | |
| 111 | if (err < 0) |
| 112 | return err; |
| 113 | |
| 114 | /* Do not bypass the scrambler/descrambler */ |
| 115 | err = phy_write(phydev, MII_DM9161_SCR, MII_DM9161_SCR_INIT); |
| 116 | |
| 117 | if (err < 0) |
| 118 | return err; |
| 119 | |
| 120 | /* Clear 10BTCSR to default */ |
| 121 | err = phy_write(phydev, MII_DM9161_10BTCSR, MII_DM9161_10BTCSR_INIT); |
| 122 | |
| 123 | if (err < 0) |
| 124 | return err; |
| 125 | |
| 126 | /* Reconnect the PHY, and enable Autonegotiation */ |
| 127 | err = phy_write(phydev, MII_BMCR, BMCR_ANENABLE); |
| 128 | |
| 129 | if (err < 0) |
| 130 | return err; |
| 131 | |
| 132 | return 0; |
| 133 | } |
| 134 | |
| 135 | static int dm9161_ack_interrupt(struct phy_device *phydev) |
| 136 | { |
| 137 | int err = phy_read(phydev, MII_DM9161_INTR); |
| 138 | |
| 139 | return (err < 0) ? err : 0; |
| 140 | } |
| 141 | |
| 142 | static struct phy_driver dm9161_driver = { |
| 143 | .phy_id = 0x0181b880, |
| 144 | .name = "Davicom DM9161E", |
| 145 | .phy_id_mask = 0x0ffffff0, |
| 146 | .features = PHY_BASIC_FEATURES, |
| 147 | .config_init = dm9161_config_init, |
| 148 | .config_aneg = dm9161_config_aneg, |
| 149 | .read_status = genphy_read_status, |
| 150 | .driver = { .owner = THIS_MODULE,}, |
| 151 | }; |
| 152 | |
| 153 | static struct phy_driver dm9131_driver = { |
| 154 | .phy_id = 0x00181b80, |
| 155 | .name = "Davicom DM9131", |
| 156 | .phy_id_mask = 0x0ffffff0, |
| 157 | .features = PHY_BASIC_FEATURES, |
| 158 | .flags = PHY_HAS_INTERRUPT, |
| 159 | .config_aneg = genphy_config_aneg, |
| 160 | .read_status = genphy_read_status, |
| 161 | .ack_interrupt = dm9161_ack_interrupt, |
| 162 | .config_intr = dm9161_config_intr, |
| 163 | .driver = { .owner = THIS_MODULE,}, |
| 164 | }; |
| 165 | |
| 166 | static int __init davicom_init(void) |
| 167 | { |
| 168 | int ret; |
| 169 | |
| 170 | ret = phy_driver_register(&dm9161_driver); |
| 171 | if (ret) |
| 172 | goto err1; |
| 173 | |
| 174 | ret = phy_driver_register(&dm9131_driver); |
| 175 | if (ret) |
| 176 | goto err2; |
| 177 | return 0; |
| 178 | |
| 179 | err2: |
| 180 | phy_driver_unregister(&dm9161_driver); |
| 181 | err1: |
| 182 | return ret; |
| 183 | } |
| 184 | |
| 185 | static void __exit davicom_exit(void) |
| 186 | { |
| 187 | phy_driver_unregister(&dm9161_driver); |
| 188 | phy_driver_unregister(&dm9131_driver); |
| 189 | } |
| 190 | |
| 191 | module_init(davicom_init); |
| 192 | module_exit(davicom_exit); |