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15064b00d6
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8470 3c298f89-4303-0410-b956-a3cf2f4a3e73
183 lines
4.7 KiB
Diff
183 lines
4.7 KiB
Diff
From: Michael Barkowski <michael.barkowski@freescale.com>
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Date: Fri, 11 May 2007 23:24:51 +0000 (-0500)
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Subject: phylib: add the ICPlus IP175C PHY driver
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X-Git-Tag: v2.6.23-rc1~1201^2~58
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X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=0cefeebaf3da39d768bffcf62460fe2088e824ef
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phylib: add the ICPlus IP175C PHY driver
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The ICPlus IP175C sports a 100Mbit/s 4-port switch in addition
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to a dedicated 100Mbit/s WAN port.
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Signed-off-by: Michael Barkowski <michael.barkowski@freescale.com>
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Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
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Signed-off-by: Jeff Garzik <jeff@garzik.org>
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---
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diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
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index 09b6f25..dd09011 100644
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--- a/drivers/net/phy/Kconfig
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+++ b/drivers/net/phy/Kconfig
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@@ -55,6 +55,11 @@ config BROADCOM_PHY
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---help---
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Currently supports the BCM5411, BCM5421 and BCM5461 PHYs.
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+config ICPLUS_PHY
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+ tristate "Drivers for ICPlus PHYs"
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+ ---help---
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+ Currently supports the IP175C PHY.
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+
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config FIXED_PHY
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tristate "Drivers for PHY emulation on fixed speed/link"
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---help---
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diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
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index bcd1efb..8885650 100644
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--- a/drivers/net/phy/Makefile
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+++ b/drivers/net/phy/Makefile
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@@ -11,4 +11,5 @@ obj-$(CONFIG_QSEMI_PHY) += qsemi.o
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obj-$(CONFIG_SMSC_PHY) += smsc.o
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obj-$(CONFIG_VITESSE_PHY) += vitesse.o
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obj-$(CONFIG_BROADCOM_PHY) += broadcom.o
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+obj-$(CONFIG_ICPLUS_PHY) += icplus.o
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obj-$(CONFIG_FIXED_PHY) += fixed.o
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diff --git a/drivers/net/phy/icplus.c b/drivers/net/phy/icplus.c
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new file mode 100644
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index 0000000..af3f1f2
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--- /dev/null
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+++ b/drivers/net/phy/icplus.c
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@@ -0,0 +1,134 @@
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+/*
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+ * Driver for ICPlus PHYs
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+ *
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+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License as published by the
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+ * Free Software Foundation; either version 2 of the License, or (at your
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+ * option) any later version.
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+ *
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+ */
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+#include <linux/kernel.h>
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+#include <linux/string.h>
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+#include <linux/errno.h>
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+#include <linux/unistd.h>
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+#include <linux/slab.h>
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+#include <linux/interrupt.h>
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+#include <linux/init.h>
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+#include <linux/delay.h>
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+#include <linux/netdevice.h>
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+#include <linux/etherdevice.h>
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+#include <linux/skbuff.h>
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+#include <linux/spinlock.h>
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+#include <linux/mm.h>
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+#include <linux/module.h>
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+#include <linux/mii.h>
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+#include <linux/ethtool.h>
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+#include <linux/phy.h>
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+
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+#include <asm/io.h>
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+#include <asm/irq.h>
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+#include <asm/uaccess.h>
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+
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+MODULE_DESCRIPTION("ICPlus IP175C PHY driver");
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+MODULE_AUTHOR("Michael Barkowski");
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+MODULE_LICENSE("GPL");
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+
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+static int ip175c_config_init(struct phy_device *phydev)
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+{
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+ int err, i;
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+ static int full_reset_performed = 0;
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+
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+ if (full_reset_performed == 0) {
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+
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+ /* master reset */
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+ err = phydev->bus->write(phydev->bus, 30, 0, 0x175c);
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+ if (err < 0)
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+ return err;
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+
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+ /* ensure no bus delays overlap reset period */
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+ err = phydev->bus->read(phydev->bus, 30, 0);
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+
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+ /* data sheet specifies reset period is 2 msec */
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+ mdelay(2);
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+
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+ /* enable IP175C mode */
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+ err = phydev->bus->write(phydev->bus, 29, 31, 0x175c);
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+ if (err < 0)
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+ return err;
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+
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+ /* Set MII0 speed and duplex (in PHY mode) */
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+ err = phydev->bus->write(phydev->bus, 29, 22, 0x420);
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+ if (err < 0)
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+ return err;
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+
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+ /* reset switch ports */
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+ for (i = 0; i < 5; i++) {
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+ err = phydev->bus->write(phydev->bus, i,
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+ MII_BMCR, BMCR_RESET);
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+ if (err < 0)
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+ return err;
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+ }
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+
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+ for (i = 0; i < 5; i++)
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+ err = phydev->bus->read(phydev->bus, i, MII_BMCR);
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+
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+ mdelay(2);
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+
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+ full_reset_performed = 1;
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+ }
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+
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+ if (phydev->addr != 4) {
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+ phydev->state = PHY_RUNNING;
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+ phydev->speed = SPEED_100;
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+ phydev->duplex = DUPLEX_FULL;
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+ phydev->link = 1;
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+ netif_carrier_on(phydev->attached_dev);
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+ }
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+
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+ return 0;
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+}
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+
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+static int ip175c_read_status(struct phy_device *phydev)
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+{
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+ if (phydev->addr == 4) /* WAN port */
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+ genphy_read_status(phydev);
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+ else
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+ /* Don't need to read status for switch ports */
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+ phydev->irq = PHY_IGNORE_INTERRUPT;
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+
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+ return 0;
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+}
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+
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+static int ip175c_config_aneg(struct phy_device *phydev)
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+{
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+ if (phydev->addr == 4) /* WAN port */
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+ genphy_config_aneg(phydev);
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+
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+ return 0;
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+}
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+
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+static struct phy_driver ip175c_driver = {
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+ .phy_id = 0x02430d80,
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+ .name = "ICPlus IP175C",
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+ .phy_id_mask = 0x0ffffff0,
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+ .features = PHY_BASIC_FEATURES,
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+ .config_init = &ip175c_config_init,
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+ .config_aneg = &ip175c_config_aneg,
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+ .read_status = &ip175c_read_status,
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+ .driver = { .owner = THIS_MODULE,},
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+};
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+
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+static int __init ip175c_init(void)
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+{
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+ return phy_driver_register(&ip175c_driver);
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+}
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+
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+static void __exit ip175c_exit(void)
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+{
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+ phy_driver_unregister(&ip175c_driver);
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+}
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+
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+module_init(ip175c_init);
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+module_exit(ip175c_exit);
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