[PATCH 2/2] phy: add smsc phy driver support
Jean-Christophe PLAGNIOL-VILLARD
plagnioj at jcrosoft.com
Thu Nov 15 04:31:44 EST 2012
as we to have specific phy init to fix chip issue link detection support
based on linux 3.6
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
---
drivers/net/phy/Kconfig | 5 ++
drivers/net/phy/Makefile | 1 +
drivers/net/phy/smsc.c | 146 ++++++++++++++++++++++++++++++++++++++++++++++
include/linux/smscphy.h | 25 ++++++++
4 files changed, 177 insertions(+)
create mode 100644 drivers/net/phy/smsc.c
create mode 100644 include/linux/smscphy.h
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index b66261a..616b539 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -14,4 +14,9 @@ config GENERIC_PHY
endif
+config SMSC_PHY
+ bool "Drivers for SMSC PHYs"
+ ---help---
+ Currently supports the LAN83C185, LAN8187 and LAN8700 PHYs
+
endmenu
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 82e90d4..0caeb70 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -1,2 +1,3 @@
obj-y += phy.o mdio_bus.o
obj-$(CONFIG_GENERIC_PHY) += generic.o
+obj-$(CONFIG_SMSC_PHY) += smsc.o
diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c
new file mode 100644
index 0000000..3c201f6
--- /dev/null
+++ b/drivers/net/phy/smsc.c
@@ -0,0 +1,146 @@
+/*
+ * drivers/net/phy/smsc.c
+ *
+ * Driver for SMSC PHYs
+ *
+ * Author: Herbert Valerio Riedel
+ *
+ * Copyright (c) 2006 Herbert Valerio Riedel <hvr at 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.
+ *
+ * Support added for SMSC LAN8187 and LAN8700 by steve.glendinning at shawell.net
+ *
+ */
+
+#include <common.h>
+#include <init.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/phy.h>
+#include <linux/smscphy.h>
+
+static int smsc_phy_ack_interrupt(struct phy_device *phydev)
+{
+ int rc = phy_read (phydev, MII_LAN83C185_ISF);
+
+ return rc < 0 ? rc : 0;
+}
+
+static int smsc_phy_config_init(struct phy_device *phydev)
+{
+ int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
+ if (rc < 0)
+ return rc;
+
+ /* Enable energy detect mode for this SMSC Transceivers */
+ rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
+ rc | MII_LAN83C185_EDPWRDOWN);
+ if (rc < 0)
+ return rc;
+
+ return smsc_phy_ack_interrupt (phydev);
+}
+
+static int lan87xx_config_init(struct phy_device *phydev)
+{
+ /*
+ * Make sure the EDPWRDOWN bit is NOT set. Setting this bit on
+ * LAN8710/LAN8720 PHY causes the PHY to misbehave, likely due
+ * to a bug on the chip.
+ *
+ * When the system is powered on with the network cable being
+ * disconnected all the way until after ifconfig ethX up is
+ * issued for the LAN port with this PHY, connecting the cable
+ * afterwards does not cause LINK change detection, while the
+ * expected behavior is the Link UP being detected.
+ */
+ int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
+ if (rc < 0)
+ return rc;
+
+ rc &= ~MII_LAN83C185_EDPWRDOWN;
+
+ rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS, rc);
+ if (rc < 0)
+ return rc;
+
+ return smsc_phy_ack_interrupt(phydev);
+}
+
+static int lan911x_config_init(struct phy_device *phydev)
+{
+ return smsc_phy_ack_interrupt(phydev);
+}
+
+static struct phy_driver smsc_phy_driver[] = {
+{
+ .phy_id = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
+ .phy_id_mask = 0xfffffff0,
+ .drv.name = "SMSC LAN83C185",
+
+ .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
+ | SUPPORTED_Asym_Pause),
+
+ /* basic functions */
+ .config_aneg = genphy_config_aneg,
+ .read_status = genphy_read_status,
+ .config_init = smsc_phy_config_init,
+}, {
+ .phy_id = 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */
+ .phy_id_mask = 0xfffffff0,
+ .drv.name = "SMSC LAN8187",
+
+ .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
+ | SUPPORTED_Asym_Pause),
+
+ /* basic functions */
+ .config_aneg = genphy_config_aneg,
+ .read_status = genphy_read_status,
+ .config_init = smsc_phy_config_init,
+}, {
+ .phy_id = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
+ .phy_id_mask = 0xfffffff0,
+ .drv.name = "SMSC LAN8700",
+
+ .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
+ | SUPPORTED_Asym_Pause),
+
+ /* basic functions */
+ .config_aneg = genphy_config_aneg,
+ .read_status = genphy_read_status,
+ .config_init = smsc_phy_config_init,
+}, {
+ .phy_id = 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */
+ .phy_id_mask = 0xfffffff0,
+ .drv.name = "SMSC LAN911x Internal PHY",
+
+ .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
+ | SUPPORTED_Asym_Pause),
+
+ /* basic functions */
+ .config_aneg = genphy_config_aneg,
+ .read_status = genphy_read_status,
+ .config_init = lan911x_config_init,
+}, {
+ .phy_id = 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */
+ .phy_id_mask = 0xfffffff0,
+ .drv.name = "SMSC LAN8710/LAN8720",
+
+ .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
+ | SUPPORTED_Asym_Pause),
+
+ /* basic functions */
+ .config_aneg = genphy_config_aneg,
+ .read_status = genphy_read_status,
+ .config_init = lan87xx_config_init,
+} };
+
+static int __init smsc_init(void)
+{
+ return phy_drivers_register(smsc_phy_driver, ARRAY_SIZE(smsc_phy_driver));
+}
+device_initcall(smsc_init);
diff --git a/include/linux/smscphy.h b/include/linux/smscphy.h
new file mode 100644
index 0000000..ce718cb
--- /dev/null
+++ b/include/linux/smscphy.h
@@ -0,0 +1,25 @@
+#ifndef __LINUX_SMSCPHY_H__
+#define __LINUX_SMSCPHY_H__
+
+#define MII_LAN83C185_ISF 29 /* Interrupt Source Flags */
+#define MII_LAN83C185_IM 30 /* Interrupt Mask */
+#define MII_LAN83C185_CTRL_STATUS 17 /* Mode/Status Register */
+
+#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 | \
+ MII_LAN83C185_ISF_INT7)
+
+#define MII_LAN83C185_EDPWRDOWN (1 << 13) /* EDPWRDOWN */
+#define MII_LAN83C185_ENERGYON (1 << 1) /* ENERGYON */
+
+#endif /* __LINUX_SMSCPHY_H__ */
--
1.7.10.4
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