Initial import

1 files changed, 265 insertions, 0 deletions

diff --git a/drivers/net/phy/icplus.c b/drivers/net/phy/icplus.c
new file mode 100644
index 000000000..8644f039d
--- /dev/null
+++ b/drivers/net/phy/icplus.c
@@ -0,0 +1,265 @@
+/*
+ * 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;
+
+	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,},
+} };
+
+module_phy_driver(icplus_driver);
+
+static struct mdio_device_id __maybe_unused icplus_tbl[] = {
+	{ 0x02430d80, 0x0ffffff0 },
+	{ 0x02430d90, 0x0ffffff0 },
+	{ 0x02430c54, 0x0ffffff0 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(mdio, icplus_tbl);