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/*
* Copyright (C) 2009-2015 Texas Instruments Incorporated - www.ti.com
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "ti_drv_mdio.h"
#include "phy_dp83848h.h"
#ifndef TRUE
/**
* Boolean definition for TRUE
*/
#define TRUE 1
#endif
#ifndef FALSE
/**
* Boolean definition for FALSE
*/
#define FALSE 0
#endif
void
PHY_reset(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr)
{
volatile unsigned short regContent;
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BMCR, PHY_RESET_m);
while (MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BMCR, ®Content) & PHY_RESET_m);
}
uint32_t
PHY_partner_ability_get(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr, unsigned short *regContent)
{
return (MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_ANLPAR, regContent));
}
uint32_t
PHY_start_auto_negotiate(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr, unsigned short advVal)
{
volatile unsigned short regContent = 0;
/* Enable Auto Negotiation */
if (MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BMCR, ®Content) != TRUE) {
return FALSE;
}
regContent |= PHY_AUTONEG_EN_m;
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BMCR, regContent); /* originally ...HY_BMCR, PHY_RESET_m | PHY_AUTONEG_EN_m); */
/* Write Auto Negotiation capabilities */
if (MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_ANAR, ®Content) != TRUE) {
return FALSE;
}
regContent |= advVal;
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_ANAR, regContent);
/* Start Auto Negotiation */
MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BMCR, ®Content);
regContent |= PHY_AUTONEG_REST;
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BMCR, regContent);
return TRUE; /* request to PHY through EMAC for autonegotiation established */
}
uint32_t
PHY_is_done_auto_negotiate(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr)
{
volatile unsigned short regContent;
if (MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BMSR, ®Content) != TRUE) {
return FALSE;
}
if ((regContent & PHY_A_NEG_COMPLETE_m) == 0)
return FALSE;
return TRUE;
}
uint32_t
PHY_auto_negotiate(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr, unsigned short advVal)
{
if (PHY_start_auto_negotiate(mdioBaseAddr, phyAddr, advVal) == FALSE)
return FALSE;
while (PHY_is_done_auto_negotiate(mdioBaseAddr, phyAddr) == FALSE);
return TRUE;
}
uint32_t
PHY_link_status_get(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr, volatile uint32_t retries)
{
volatile unsigned short linkStatus;
volatile uint32_t retVal = TRUE;
while (retVal == TRUE) {
/* Read the BSR of the PHY */
MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BMSR, &linkStatus);
if (linkStatus & PHY_LINK_STATUS_m) {
break;
} else
{
(retries != 0) ? retries-- : (retVal = FALSE);
}
}
return retVal;
}
uint32_t
PHY_RMII_mode_get(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr)
{
volatile unsigned short regContent;
/* Read the RBR of the PHY */
MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_RBR, ®Content);
return (regContent & PHY_RMII_MODE);
}
void
PHY_MII_mode_set(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr, uint32_t mode)
{
volatile unsigned short regContent;
/* Read the RBR of the PHY */
MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_RBR, ®Content);
/* Write the RBR of the PHY */
regContent &= 0x1f;
regContent |= ( mode << 5 );
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_RBR, regContent);
}
void
PHY_Power_Down(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr)
{
volatile unsigned short regContent;
MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BMCR, ®Content);
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BMCR, regContent | PHY_POWERDOWN_m);
}
void
PHY_Power_Up(volatile tms570_mdio_t *mdioBaseAddr, uint32_t phyAddr)
{
volatile unsigned short regContent;
MDIOPhyRegRead(mdioBaseAddr, phyAddr, PHY_BMCR, ®Content);
MDIOPhyRegWrite(mdioBaseAddr, phyAddr, PHY_BMCR, regContent & ~PHY_POWERDOWN_m);
}
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