Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 1 | /* |
| 2 | * drivers/net/phy/marvell.c |
| 3 | * |
| 4 | * Driver for Marvell 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 | */ |
| 16 | #include <linux/config.h> |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/sched.h> |
| 19 | #include <linux/string.h> |
| 20 | #include <linux/errno.h> |
| 21 | #include <linux/unistd.h> |
| 22 | #include <linux/slab.h> |
| 23 | #include <linux/interrupt.h> |
| 24 | #include <linux/init.h> |
| 25 | #include <linux/delay.h> |
| 26 | #include <linux/netdevice.h> |
| 27 | #include <linux/etherdevice.h> |
| 28 | #include <linux/skbuff.h> |
| 29 | #include <linux/spinlock.h> |
| 30 | #include <linux/mm.h> |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/version.h> |
| 33 | #include <linux/mii.h> |
| 34 | #include <linux/ethtool.h> |
| 35 | #include <linux/phy.h> |
| 36 | |
| 37 | #include <asm/io.h> |
| 38 | #include <asm/irq.h> |
| 39 | #include <asm/uaccess.h> |
| 40 | |
| 41 | #define MII_M1011_IEVENT 0x13 |
| 42 | #define MII_M1011_IEVENT_CLEAR 0x0000 |
| 43 | |
| 44 | #define MII_M1011_IMASK 0x12 |
| 45 | #define MII_M1011_IMASK_INIT 0x6400 |
| 46 | #define MII_M1011_IMASK_CLEAR 0x0000 |
| 47 | |
| 48 | MODULE_DESCRIPTION("Marvell PHY driver"); |
| 49 | MODULE_AUTHOR("Andy Fleming"); |
| 50 | MODULE_LICENSE("GPL"); |
| 51 | |
| 52 | static int marvell_ack_interrupt(struct phy_device *phydev) |
| 53 | { |
| 54 | int err; |
| 55 | |
| 56 | /* Clear the interrupts by reading the reg */ |
| 57 | err = phy_read(phydev, MII_M1011_IEVENT); |
| 58 | |
| 59 | if (err < 0) |
| 60 | return err; |
| 61 | |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | static int marvell_config_intr(struct phy_device *phydev) |
| 66 | { |
| 67 | int err; |
| 68 | |
| 69 | if(phydev->interrupts == PHY_INTERRUPT_ENABLED) |
| 70 | err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_INIT); |
| 71 | else |
| 72 | err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR); |
| 73 | |
| 74 | return err; |
| 75 | } |
| 76 | |
| 77 | static int marvell_config_aneg(struct phy_device *phydev) |
| 78 | { |
| 79 | int err; |
| 80 | |
| 81 | /* The Marvell PHY has an errata which requires |
| 82 | * that certain registers get written in order |
| 83 | * to restart autonegotiation */ |
| 84 | err = phy_write(phydev, MII_BMCR, BMCR_RESET); |
| 85 | |
| 86 | if (err < 0) |
| 87 | return err; |
| 88 | |
| 89 | err = phy_write(phydev, 0x1d, 0x1f); |
| 90 | if (err < 0) |
| 91 | return err; |
| 92 | |
| 93 | err = phy_write(phydev, 0x1e, 0x200c); |
| 94 | if (err < 0) |
| 95 | return err; |
| 96 | |
| 97 | err = phy_write(phydev, 0x1d, 0x5); |
| 98 | if (err < 0) |
| 99 | return err; |
| 100 | |
| 101 | err = phy_write(phydev, 0x1e, 0); |
| 102 | if (err < 0) |
| 103 | return err; |
| 104 | |
| 105 | err = phy_write(phydev, 0x1e, 0x100); |
| 106 | if (err < 0) |
| 107 | return err; |
| 108 | |
| 109 | |
| 110 | err = genphy_config_aneg(phydev); |
| 111 | |
| 112 | return err; |
| 113 | } |
| 114 | |
| 115 | |
| 116 | static struct phy_driver m88e1101_driver = { |
| 117 | .phy_id = 0x01410c00, |
| 118 | .phy_id_mask = 0xffffff00, |
| 119 | .name = "Marvell 88E1101", |
| 120 | .features = PHY_GBIT_FEATURES, |
| 121 | .flags = PHY_HAS_INTERRUPT, |
| 122 | .config_aneg = &marvell_config_aneg, |
| 123 | .read_status = &genphy_read_status, |
| 124 | .ack_interrupt = &marvell_ack_interrupt, |
| 125 | .config_intr = &marvell_config_intr, |
| 126 | .driver = { .owner = THIS_MODULE,}, |
| 127 | }; |
| 128 | |
| 129 | static int __init marvell_init(void) |
| 130 | { |
| 131 | return phy_driver_register(&m88e1101_driver); |
| 132 | } |
| 133 | |
| 134 | static void __exit marvell_exit(void) |
| 135 | { |
| 136 | phy_driver_unregister(&m88e1101_driver); |
| 137 | } |
| 138 | |
| 139 | module_init(marvell_init); |
| 140 | module_exit(marvell_exit); |