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95 lines
2.3 KiB
95 lines
2.3 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Driver for Teranetics PHY |
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* |
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* Author: Shaohui Xie <[email protected]> |
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* |
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* Copyright 2015 Freescale Semiconductor, Inc. |
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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 <[email protected]>"); |
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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_aneg_done(struct phy_device *phydev) |
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{ |
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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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return genphy_c45_aneg_done(phydev); |
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return 1; |
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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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.features = PHY_10GBIT_FEATURES, |
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.aneg_done = teranetics_aneg_done, |
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.config_aneg = gen10g_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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