From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/net/phy/teranetics.c | 122 ++++++++++++++++++++++++++++++++++++ 1 file changed, 122 insertions(+) create mode 100644 kernel/drivers/net/phy/teranetics.c (limited to 'kernel/drivers/net/phy/teranetics.c') diff --git a/kernel/drivers/net/phy/teranetics.c b/kernel/drivers/net/phy/teranetics.c new file mode 100644 index 000000000..07463fcca --- /dev/null +++ b/kernel/drivers/net/phy/teranetics.c @@ -0,0 +1,122 @@ +/* + * Driver for Teranetics PHY + * + * Author: Shaohui Xie + * + * 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 +#include +#include +#include +#include +#include + +MODULE_DESCRIPTION("Teranetics PHY driver"); +MODULE_AUTHOR("Shaohui Xie "); +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; + + /* 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)) { + reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1); + return (reg < 0) ? reg : (reg & BMSR_ANEGCOMPLETE); + } + + return 1; +} + +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,}, +}, +}; + +module_phy_driver(teranetics_driver); + +static struct mdio_device_id __maybe_unused teranetics_tbl[] = { + { PHY_ID_TN2020, 0xffffffff }, + { } +}; + +MODULE_DEVICE_TABLE(mdio, teranetics_tbl); -- cgit 1.2.3-korg