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path: root/drivers/net/phy/icplus.c
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Diffstat (limited to 'drivers/net/phy/icplus.c')
-rw-r--r--drivers/net/phy/icplus.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/net/phy/icplus.c b/drivers/net/phy/icplus.c
new file mode 100644
index 000000000000..af3f1f2a9f87
--- /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);