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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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be01da72b1
Rather than have each driver set the driver owner field, do it once in the core code. This will also help with later changes, when the device structure will move. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
122 lines
2.9 KiB
C
122 lines
2.9 KiB
C
/*
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* Driver for Teranetics PHY
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*
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* Author: Shaohui Xie <Shaohui.Xie@freescale.com>
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*
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* Copyright 2015 Freescale Semiconductor, Inc.
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of any
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* kind, whether express or implied.
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*/
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#include <linux/kernel.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/mdio.h>
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#include <linux/phy.h>
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MODULE_DESCRIPTION("Teranetics PHY driver");
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MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>");
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MODULE_LICENSE("GPL v2");
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#define PHY_ID_TN2020 0x00a19410
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#define MDIO_PHYXS_LNSTAT_SYNC0 0x0001
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#define MDIO_PHYXS_LNSTAT_SYNC1 0x0002
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#define MDIO_PHYXS_LNSTAT_SYNC2 0x0004
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#define MDIO_PHYXS_LNSTAT_SYNC3 0x0008
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#define MDIO_PHYXS_LNSTAT_ALIGN 0x1000
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#define MDIO_PHYXS_LANE_READY (MDIO_PHYXS_LNSTAT_SYNC0 | \
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MDIO_PHYXS_LNSTAT_SYNC1 | \
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MDIO_PHYXS_LNSTAT_SYNC2 | \
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MDIO_PHYXS_LNSTAT_SYNC3 | \
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MDIO_PHYXS_LNSTAT_ALIGN)
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static int teranetics_config_init(struct phy_device *phydev)
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{
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phydev->supported = SUPPORTED_10000baseT_Full;
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phydev->advertising = SUPPORTED_10000baseT_Full;
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return 0;
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}
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static int teranetics_soft_reset(struct phy_device *phydev)
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{
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return 0;
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}
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static int teranetics_aneg_done(struct phy_device *phydev)
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{
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int reg;
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/* auto negotiation state can only be checked when using copper
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* port, if using fiber port, just lie it's done.
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*/
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if (!phy_read_mmd(phydev, MDIO_MMD_VEND1, 93)) {
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reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
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return (reg < 0) ? reg : (reg & BMSR_ANEGCOMPLETE);
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}
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return 1;
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}
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static int teranetics_config_aneg(struct phy_device *phydev)
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{
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return 0;
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}
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static int teranetics_read_status(struct phy_device *phydev)
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{
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int reg;
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phydev->link = 1;
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phydev->speed = SPEED_10000;
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phydev->duplex = DUPLEX_FULL;
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if (!phy_read_mmd(phydev, MDIO_MMD_VEND1, 93)) {
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reg = phy_read_mmd(phydev, MDIO_MMD_PHYXS, MDIO_PHYXS_LNSTAT);
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if (reg < 0 ||
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!((reg & MDIO_PHYXS_LANE_READY) == MDIO_PHYXS_LANE_READY)) {
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phydev->link = 0;
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return 0;
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}
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reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
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if (reg < 0 || !(reg & MDIO_STAT1_LSTATUS))
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phydev->link = 0;
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}
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return 0;
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}
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static int teranetics_match_phy_device(struct phy_device *phydev)
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{
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return phydev->c45_ids.device_ids[3] == PHY_ID_TN2020;
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}
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static struct phy_driver teranetics_driver[] = {
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{
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.phy_id = PHY_ID_TN2020,
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.phy_id_mask = 0xffffffff,
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.name = "Teranetics TN2020",
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.soft_reset = teranetics_soft_reset,
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.aneg_done = teranetics_aneg_done,
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.config_init = teranetics_config_init,
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.config_aneg = teranetics_config_aneg,
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.read_status = teranetics_read_status,
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.match_phy_device = teranetics_match_phy_device,
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},
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};
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module_phy_driver(teranetics_driver);
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static struct mdio_device_id __maybe_unused teranetics_tbl[] = {
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{ PHY_ID_TN2020, 0xffffffff },
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{ }
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};
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MODULE_DEVICE_TABLE(mdio, teranetics_tbl);
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