77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
/*
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* LXT PHY drivers
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* Copyright 2010-2011 Freescale Semiconductor, Inc.
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* author Andy Fleming
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*/
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#include <phy.h>
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/* LXT971 Status 2 registers */
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#define MIIM_LXT971_SR2 0x11 /* Status Register 2 */
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#define MIIM_LXT971_SR2_SPEED_MASK 0x4200
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#define MIIM_LXT971_SR2_10HDX 0x0000 /* 10 Mbit half duplex selected */
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#define MIIM_LXT971_SR2_10FDX 0x0200 /* 10 Mbit full duplex selected */
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#define MIIM_LXT971_SR2_100HDX 0x4000 /* 100 Mbit half duplex selected */
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#define MIIM_LXT971_SR2_100FDX 0x4200 /* 100 Mbit full duplex selected */
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/* LXT971 */
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static int lxt971_parse_status(struct phy_device *phydev)
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{
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int mii_reg;
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int speed;
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mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_LXT971_SR2);
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speed = mii_reg & MIIM_LXT971_SR2_SPEED_MASK;
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switch (speed) {
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case MIIM_LXT971_SR2_10HDX:
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phydev->speed = SPEED_10;
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phydev->duplex = DUPLEX_HALF;
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break;
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case MIIM_LXT971_SR2_10FDX:
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phydev->speed = SPEED_10;
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phydev->duplex = DUPLEX_FULL;
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break;
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case MIIM_LXT971_SR2_100HDX:
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phydev->speed = SPEED_100;
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phydev->duplex = DUPLEX_HALF;
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break;
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default:
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phydev->speed = SPEED_100;
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phydev->duplex = DUPLEX_FULL;
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}
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return 0;
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}
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static int lxt971_startup(struct phy_device *phydev)
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{
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int ret;
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ret = genphy_update_link(phydev);
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if (ret)
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return ret;
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return lxt971_parse_status(phydev);
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}
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static struct phy_driver LXT971_driver = {
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.name = "LXT971",
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.uid = 0x1378e0,
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.mask = 0xfffff0,
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.features = PHY_BASIC_FEATURES,
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.config = &genphy_config_aneg,
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.startup = &lxt971_startup,
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.shutdown = &genphy_shutdown,
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};
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int phy_lxt_init(void)
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{
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phy_register(&LXT971_driver);
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return 0;
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}
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