88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
/*
|
|
* Davicom PHY drivers
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*
|
|
* Copyright 2010-2011 Freescale Semiconductor, Inc.
|
|
* author Andy Fleming
|
|
*/
|
|
#include <phy.h>
|
|
|
|
#define MIIM_DM9161_SCR 0x10
|
|
#define MIIM_DM9161_SCR_INIT 0x0610
|
|
|
|
/* DM9161 Specified Configuration and Status Register */
|
|
#define MIIM_DM9161_SCSR 0x11
|
|
#define MIIM_DM9161_SCSR_100F 0x8000
|
|
#define MIIM_DM9161_SCSR_100H 0x4000
|
|
#define MIIM_DM9161_SCSR_10F 0x2000
|
|
#define MIIM_DM9161_SCSR_10H 0x1000
|
|
|
|
/* DM9161 10BT Configuration/Status */
|
|
#define MIIM_DM9161_10BTCSR 0x12
|
|
#define MIIM_DM9161_10BTCSR_INIT 0x7800
|
|
|
|
|
|
/* Davicom DM9161E */
|
|
static int dm9161_config(struct phy_device *phydev)
|
|
{
|
|
phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, BMCR_ISOLATE);
|
|
/* Do not bypass the scrambler/descrambler */
|
|
phy_write(phydev, MDIO_DEVAD_NONE, MIIM_DM9161_SCR,
|
|
MIIM_DM9161_SCR_INIT);
|
|
/* Clear 10BTCSR to default */
|
|
phy_write(phydev, MDIO_DEVAD_NONE, MIIM_DM9161_10BTCSR,
|
|
MIIM_DM9161_10BTCSR_INIT);
|
|
|
|
genphy_config_aneg(phydev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dm9161_parse_status(struct phy_device *phydev)
|
|
{
|
|
int mii_reg;
|
|
|
|
mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_DM9161_SCSR);
|
|
|
|
if (mii_reg & (MIIM_DM9161_SCSR_100F | MIIM_DM9161_SCSR_100H))
|
|
phydev->speed = SPEED_100;
|
|
else
|
|
phydev->speed = SPEED_10;
|
|
|
|
if (mii_reg & (MIIM_DM9161_SCSR_100F | MIIM_DM9161_SCSR_10F))
|
|
phydev->duplex = DUPLEX_FULL;
|
|
else
|
|
phydev->duplex = DUPLEX_HALF;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dm9161_startup(struct phy_device *phydev)
|
|
{
|
|
int ret;
|
|
|
|
ret = genphy_update_link(phydev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return dm9161_parse_status(phydev);
|
|
}
|
|
|
|
static struct phy_driver DM9161_driver = {
|
|
.name = "Davicom DM9161E",
|
|
.uid = 0x181b880,
|
|
.mask = 0xffffff0,
|
|
.features = PHY_BASIC_FEATURES,
|
|
.config = &dm9161_config,
|
|
.startup = &dm9161_startup,
|
|
.shutdown = &genphy_shutdown,
|
|
};
|
|
|
|
int phy_davicom_init(void)
|
|
{
|
|
phy_register(&DM9161_driver);
|
|
|
|
return 0;
|
|
}
|