diff options
Diffstat (limited to 'drivers/net/phy')
| -rw-r--r-- | drivers/net/phy/Kconfig | 5 | ||||
| -rw-r--r-- | drivers/net/phy/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/phy/icplus.c | 134 |
3 files changed, 140 insertions, 0 deletions
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 09b6f259eb9..dd09011c7ee 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -55,6 +55,11 @@ config BROADCOM_PHY ---help--- Currently supports the BCM5411, BCM5421 and BCM5461 PHYs. +config ICPLUS_PHY + tristate "Drivers for ICPlus PHYs" + ---help--- + Currently supports the IP175C PHY. + config FIXED_PHY tristate "Drivers for PHY emulation on fixed speed/link" ---help--- diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index bcd1efbd2a1..8885650647f 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -11,4 +11,5 @@ obj-$(CONFIG_QSEMI_PHY) += qsemi.o obj-$(CONFIG_SMSC_PHY) += smsc.o obj-$(CONFIG_VITESSE_PHY) += vitesse.o obj-$(CONFIG_BROADCOM_PHY) += broadcom.o +obj-$(CONFIG_ICPLUS_PHY) += icplus.o obj-$(CONFIG_FIXED_PHY) += fixed.o diff --git a/drivers/net/phy/icplus.c b/drivers/net/phy/icplus.c new file mode 100644 index 00000000000..af3f1f2a9f8 --- /dev/null +++ b/drivers/net/phy/icplus.c @@ -0,0 +1,134 @@ +/* + * 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); |