phylib: add driver for Teranetics TN2020 (f61687c0) · Commits · e / devices / android_kernel_sony_msm8998

drivers/net/phy/Kconfig

+5 −0

Original line number	Diff line number	Diff line
		@@ -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---

drivers/net/phy/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -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

drivers/net/phy/teranetics.c

0 → 100644

+128 −0

Original line number	Diff line number	Diff line
		/*
		* 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);