mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 08:44:21 +08:00
0cefeebaf3
The ICPlus IP175C sports a 100Mbit/s 4-port switch in addition to a dedicated 100Mbit/s WAN port. Signed-off-by: Michael Barkowski <michael.barkowski@freescale.com> Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
135 lines
3.0 KiB
C
135 lines
3.0 KiB
C
/*
|
|
* 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);
|