--- /dev/null
+/*
+ * 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);
Code Review / kvmfornfv.git / blobdiff