/* * 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_aneg_done(struct phy_device *phydev) { /* auto negotiation state can only be checked when using copper * port, if using fiber port, just lie it's done. */ if (!phy_read_mmd(phydev, MDIO_MMD_VEND1, 93)) return genphy_c45_aneg_done(phydev); return 1; } 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 = gen10g_no_soft_reset, .aneg_done = teranetics_aneg_done, .config_init = gen10g_config_init, .config_aneg = gen10g_config_aneg, .read_status = teranetics_read_status, .match_phy_device = teranetics_match_phy_device, }, }; module_phy_driver(teranetics_driver); static struct mdio_device_id __maybe_unused teranetics_tbl[] = { { PHY_ID_TN2020, 0xffffffff }, { } }; MODULE_DEVICE_TABLE(mdio, teranetics_tbl);