/* * 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/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/IP101A/IP101G/IC1001 PHY drivers");MODULE_AUTHOR("Michael Barkowski");MODULE_LICENSE("GPL"); /* IP101A/G - IP1001 */#define IP10XX_SPEC_CTRL_STATUS		16	/* Spec. Control Register */#define IP1001_RXPHASE_SEL		(1<<0)	/* Add delay on RX_CLK */#define IP1001_TXPHASE_SEL		(1<<1)	/* Add delay on TX_CLK */#define IP1001_SPEC_CTRL_STATUS_2	20	/* IP1001 Spec. Control Reg 2 */#define IP1001_APS_ON			11	/* IP1001 APS Mode  bit */#define IP101A_G_APS_ON			2	/* IP101A/G APS Mode bit */#define IP101A_G_IRQ_CONF_STATUS	0x11	/* Conf Info IRQ & Status Reg */#define	IP101A_G_IRQ_PIN_USED		(1<<15) /* INTR pin used */#define	IP101A_G_IRQ_DEFAULT		IP101A_G_IRQ_PIN_USED 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 = mdiobus_write(phydev->bus, 30, 0, 0x175c);		if (err < 0)			return err; 		/* ensure no bus delays overlap reset period */		err = mdiobus_read(phydev->bus, 30, 0); 		/* data sheet specifies reset period is 2 msec */		mdelay(2); 		/* enable IP175C mode */		err = mdiobus_write(phydev->bus, 29, 31, 0x175c);		if (err < 0)			return err; 		/* Set MII0 speed and duplex (in PHY mode) */		err = mdiobus_write(phydev->bus, 29, 22, 0x420);		if (err < 0)			return err; 		/* reset switch ports */		for (i = 0; i < 5; i++) {			err = mdiobus_write(phydev->bus, i,					    MII_BMCR, BMCR_RESET);			if (err < 0)				return err;		} 		for (i = 0; i < 5; i++)			err = mdiobus_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 ip1xx_reset(struct phy_device *phydev){	int bmcr; 	/* Software Reset PHY */	bmcr = phy_read(phydev, MII_BMCR);	if (bmcr < 0)		return bmcr;	bmcr |= BMCR_RESET;	bmcr = phy_write(phydev, MII_BMCR, bmcr);	if (bmcr < 0)		return bmcr; 	do {		bmcr = phy_read(phydev, MII_BMCR);		if (bmcr < 0)			return bmcr;	} while (bmcr & BMCR_RESET); 	return 0;} static int ip1001_config_init(struct phy_device *phydev){	int c; 	c = ip1xx_reset(phydev);	if (c < 0)		return c; 	/* Enable Auto Power Saving mode */	c = phy_read(phydev, IP1001_SPEC_CTRL_STATUS_2);	if (c < 0)		return c;	c |= IP1001_APS_ON;	c = phy_write(phydev, IP1001_SPEC_CTRL_STATUS_2, c);	if (c < 0)		return c; 	if ((phydev->interface == PHY_INTERFACE_MODE_RGMII) ||	    (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||	    (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) ||	    (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)) { 		c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS);		if (c < 0)			return c; 		c &= ~(IP1001_RXPHASE_SEL | IP1001_TXPHASE_SEL); 		if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)			c |= (IP1001_RXPHASE_SEL | IP1001_TXPHASE_SEL);		else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID)			c |= IP1001_RXPHASE_SEL;		else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)			c |= IP1001_TXPHASE_SEL; 		c = phy_write(phydev, IP10XX_SPEC_CTRL_STATUS, c);		if (c < 0)			return c;	} 	return 0;} static int ip101a_g_config_init(struct phy_device *phydev){	int c; 	c = ip1xx_reset(phydev);	if (c < 0)		return c; 	/* INTR pin used: speed/link/duplex will cause an interrupt */	c = phy_write(phydev, IP101A_G_IRQ_CONF_STATUS, IP101A_G_IRQ_DEFAULT);	if (c < 0)		return c; 	/* Enable Auto Power Saving mode */	c = phy_read(phydev, IP10XX_SPEC_CTRL_STATUS);	c |= IP101A_G_APS_ON; 	return phy_write(phydev, IP10XX_SPEC_CTRL_STATUS, c);} 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 int ip101a_g_ack_interrupt(struct phy_device *phydev){	int err = phy_read(phydev, IP101A_G_IRQ_CONF_STATUS);	if (err < 0)		return err; 	return 0;} static struct phy_driver icplus_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,	.suspend	= genphy_suspend,	.resume		= genphy_resume,	.driver		= { .owner = THIS_MODULE,},}, {	.phy_id		= 0x02430d90,	.name		= "ICPlus IP1001",	.phy_id_mask	= 0x0ffffff0,	.features	= PHY_GBIT_FEATURES | SUPPORTED_Pause |			  SUPPORTED_Asym_Pause,	.config_init	= &ip1001_config_init,	.config_aneg	= &genphy_config_aneg,	.read_status	= &genphy_read_status,	.suspend	= genphy_suspend,	.resume		= genphy_resume,	.driver		= { .owner = THIS_MODULE,},}, {	.phy_id		= 0x02430c54,	.name		= "ICPlus IP101A/G",	.phy_id_mask	= 0x0ffffff0,	.features	= PHY_BASIC_FEATURES | SUPPORTED_Pause |			  SUPPORTED_Asym_Pause,	.flags		= PHY_HAS_INTERRUPT,	.ack_interrupt	= ip101a_g_ack_interrupt,	.config_init	= &ip101a_g_config_init,	.config_aneg	= &genphy_config_aneg,	.read_status	= &genphy_read_status,	.suspend	= genphy_suspend,	.resume		= genphy_resume,	.driver		= { .owner = THIS_MODULE,},} }; static int __init icplus_init(void){	return phy_drivers_register(icplus_driver,		ARRAY_SIZE(icplus_driver));} static void __exit icplus_exit(void){	phy_drivers_unregister(icplus_driver,		ARRAY_SIZE(icplus_driver));} module_init(icplus_init);module_exit(icplus_exit); static struct mdio_device_id __maybe_unused icplus_tbl[] = {	{ 0x02430d80, 0x0ffffff0 },	{ 0x02430d90, 0x0ffffff0 },	{ 0x02430c54, 0x0ffffff0 },	{ }}; MODULE_DEVICE_TABLE(mdio, icplus_tbl);