From c9e055ac4fdbb52622437e0dbfdbc1d4897d2775 Mon Sep 17 00:00:00 2001
From: Herbert Valerio Riedel <hvr@gnu.org>
Date: Sun, 7 May 2006 23:22:53 +0200
Subject: [PATCH] phy: new SMSC LAN83C185 PHY driver

new SMSC LAN83C185 10BaseT/100BaseTX PHY driver for the PHY subsystem

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
 drivers/net/phy/Kconfig  |   6 +++
 drivers/net/phy/Makefile |   1 +
 drivers/net/phy/smsc.c   | 101 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 108 insertions(+)
 create mode 100644 drivers/net/phy/smsc.c

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index fa39b944bc4..cda3e53d691 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -45,5 +45,11 @@ config CICADA_PHY
 	---help---
 	  Currently supports the cis8204
 
+config SMSC_PHY
+	tristate "Drivers for SMSC PHYs"
+	depends on PHYLIB
+	---help---
+	  Currently supports the LAN83C185 PHY
+
 endmenu
 
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index e4116a5fbb4..d9614134cc0 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -8,3 +8,4 @@ obj-$(CONFIG_DAVICOM_PHY)	+= davicom.o
 obj-$(CONFIG_CICADA_PHY)	+= cicada.o
 obj-$(CONFIG_LXT_PHY)		+= lxt.o
 obj-$(CONFIG_QSEMI_PHY)		+= qsemi.o
+obj-$(CONFIG_SMSC_PHY)		+= smsc.o
diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c
new file mode 100644
index 00000000000..25e31fb5cb3
--- /dev/null
+++ b/drivers/net/phy/smsc.c
@@ -0,0 +1,101 @@
+/*
+ * drivers/net/phy/smsc.c
+ *
+ * Driver for SMSC PHYs
+ *
+ * Author: Herbert Valerio Riedel
+ *
+ * Copyright (c) 2006 Herbert Valerio Riedel <hvr@gnu.org>
+ *
+ * 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/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/phy.h>
+#include <linux/netdevice.h>
+
+#define MII_LAN83C185_ISF 29 /* Interrupt Source Flags */
+#define MII_LAN83C185_IM  30 /* Interrupt Mask */
+
+#define MII_LAN83C185_ISF_INT1 (1<<1) /* Auto-Negotiation Page Received */
+#define MII_LAN83C185_ISF_INT2 (1<<2) /* Parallel Detection Fault */
+#define MII_LAN83C185_ISF_INT3 (1<<3) /* Auto-Negotiation LP Ack */
+#define MII_LAN83C185_ISF_INT4 (1<<4) /* Link Down */
+#define MII_LAN83C185_ISF_INT5 (1<<5) /* Remote Fault Detected */
+#define MII_LAN83C185_ISF_INT6 (1<<6) /* Auto-Negotiation complete */
+#define MII_LAN83C185_ISF_INT7 (1<<7) /* ENERGYON */
+
+#define MII_LAN83C185_ISF_INT_ALL (0x0e)
+
+#define MII_LAN83C185_ISF_INT_PHYLIB_EVENTS \
+	(MII_LAN83C185_ISF_INT6 | MII_LAN83C185_ISF_INT4)
+
+
+static int lan83c185_config_intr(struct phy_device *phydev)
+{
+	int rc = phy_write (phydev, MII_LAN83C185_IM,
+			((PHY_INTERRUPT_ENABLED == phydev->interrupts)
+			? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS
+			: 0));
+
+	return rc < 0 ? rc : 0;
+}
+
+static int lan83c185_ack_interrupt(struct phy_device *phydev)
+{
+	int rc = phy_read (phydev, MII_LAN83C185_ISF);
+
+	return rc < 0 ? rc : 0;
+}
+
+static int lan83c185_config_init(struct phy_device *phydev)
+{
+	return lan83c185_ack_interrupt (phydev);
+}
+
+
+static struct phy_driver lan83c185_driver = {
+	.phy_id		= 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
+	.phy_id_mask	= 0xfffffff0,
+	.name		= "SMSC LAN83C185",
+
+	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause
+				| SUPPORTED_Asym_Pause),
+	.flags		= PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
+
+	/* basic functions */
+	.config_aneg	= genphy_config_aneg,
+	.read_status	= genphy_read_status,
+	.config_init	= lan83c185_config_init,
+
+	/* IRQ related */
+	.ack_interrupt	= lan83c185_ack_interrupt,
+	.config_intr	= lan83c185_config_intr,
+
+	.driver		= { .owner = THIS_MODULE, }
+};
+
+static int __init smsc_init(void)
+{
+	return phy_driver_register (&lan83c185_driver);
+}
+
+static void __exit smsc_exit(void)
+{
+	phy_driver_unregister (&lan83c185_driver);
+}
+
+MODULE_DESCRIPTION("SMSC PHY driver");
+MODULE_AUTHOR("Herbert Valerio Riedel");
+MODULE_LICENSE("GPL");
+
+module_init(smsc_init);
+module_exit(smsc_exit);
-- 
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