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phylib: add driver for Teranetics TN2020
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Teranetics TN2020 is compliant with IEEE 802.3an 10 Gigabit.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Shaohui Xie authored and David S. Miller committed Jul 21, 2015
1 parent 500322e commit f61687c
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5 changes: 5 additions & 0 deletions drivers/net/phy/Kconfig
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Expand Up @@ -54,6 +54,11 @@ config VITESSE_PHY
---help---
Currently supports the vsc8244

config TERANETICS_PHY
tristate "Drivers for the Teranetics PHYs"
---help---
Currently supports the Teranetics TN2020

config SMSC_PHY
tristate "Drivers for SMSC PHYs"
---help---
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1 change: 1 addition & 0 deletions drivers/net/phy/Makefile
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Expand Up @@ -9,6 +9,7 @@ obj-$(CONFIG_CICADA_PHY) += cicada.o
obj-$(CONFIG_LXT_PHY) += lxt.o
obj-$(CONFIG_QSEMI_PHY) += qsemi.o
obj-$(CONFIG_SMSC_PHY) += smsc.o
obj-$(CONFIG_TERANETICS_PHY) += teranetics.o
obj-$(CONFIG_VITESSE_PHY) += vitesse.o
obj-$(CONFIG_BROADCOM_PHY) += broadcom.o
obj-$(CONFIG_BCM63XX_PHY) += bcm63xx.o
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128 changes: 128 additions & 0 deletions drivers/net/phy/teranetics.c
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@@ -0,0 +1,128 @@
/*
* Driver for Teranetics PHY
*
* Author: Shaohui Xie <Shaohui.Xie@freescale.com>
*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/mdio.h>
#include <linux/phy.h>

MODULE_DESCRIPTION("Teranetics PHY driver");
MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>");
MODULE_LICENSE("GPL v2");

#define PHY_ID_TN2020 0x00a19410
#define MDIO_PHYXS_LNSTAT_SYNC0 0x0001
#define MDIO_PHYXS_LNSTAT_SYNC1 0x0002
#define MDIO_PHYXS_LNSTAT_SYNC2 0x0004
#define MDIO_PHYXS_LNSTAT_SYNC3 0x0008
#define MDIO_PHYXS_LNSTAT_ALIGN 0x1000

#define MDIO_PHYXS_LANE_READY (MDIO_PHYXS_LNSTAT_SYNC0 | \
MDIO_PHYXS_LNSTAT_SYNC1 | \
MDIO_PHYXS_LNSTAT_SYNC2 | \
MDIO_PHYXS_LNSTAT_SYNC3 | \
MDIO_PHYXS_LNSTAT_ALIGN)

static int teranetics_config_init(struct phy_device *phydev)
{
phydev->supported = SUPPORTED_10000baseT_Full;
phydev->advertising = SUPPORTED_10000baseT_Full;

return 0;
}

static int teranetics_soft_reset(struct phy_device *phydev)
{
return 0;
}

static int teranetics_aneg_done(struct phy_device *phydev)
{
int reg;

reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
return (reg < 0) ? reg : (reg & BMSR_ANEGCOMPLETE);
}

static int teranetics_config_aneg(struct phy_device *phydev)
{
return 0;
}

static int teranetics_read_status(struct phy_device *phydev)
{
int reg;

phydev->link = 1;

phydev->speed = SPEED_10000;
phydev->duplex = DUPLEX_FULL;

if (!phy_read_mmd(phydev, MDIO_MMD_VEND1, 93)) {
reg = phy_read_mmd(phydev, MDIO_MMD_PHYXS, MDIO_PHYXS_LNSTAT);
if (reg < 0 ||
!((reg & MDIO_PHYXS_LANE_READY) == MDIO_PHYXS_LANE_READY)) {
phydev->link = 0;
return 0;
}

reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
if (reg < 0 || !(reg & MDIO_STAT1_LSTATUS))
phydev->link = 0;
}

return 0;
}

static int teranetics_match_phy_device(struct phy_device *phydev)
{
return phydev->c45_ids.device_ids[3] == PHY_ID_TN2020;
}

static struct phy_driver teranetics_driver[] = {
{
.phy_id = PHY_ID_TN2020,
.phy_id_mask = 0xffffffff,
.name = "Teranetics TN2020",
.soft_reset = teranetics_soft_reset,
.aneg_done = teranetics_aneg_done,
.config_init = teranetics_config_init,
.config_aneg = teranetics_config_aneg,
.read_status = teranetics_read_status,
.match_phy_device = teranetics_match_phy_device,
.driver = { .owner = THIS_MODULE,},
},
};

static int __init teranetics_init(void)
{
return phy_drivers_register(teranetics_driver,
ARRAY_SIZE(teranetics_driver));
}

static void __exit teranetics_exit(void)
{
return phy_drivers_unregister(teranetics_driver,
ARRAY_SIZE(teranetics_driver));
}

module_init(teranetics_init);
module_exit(teranetics_exit);

static struct mdio_device_id __maybe_unused teranetics_tbl[] = {
{ PHY_ID_TN2020, 0xffffffff },
{ }
};

MODULE_DEVICE_TABLE(mdio, teranetics_tbl);

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