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-rw-r--r--board/kb9202/lxt972.c209
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diff --git a/board/kb9202/lxt972.c b/board/kb9202/lxt972.c
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-/*
- *
- * (C) Copyright 2003
- * Author : Hamid Ikdoumi (Atmel)
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-/*
- * Adatped for KwikByte KB920x board: 22APR2005
- */
-
-#include <at91rm9200_net.h>
-#include <net.h>
-#include <lxt971a.h>
-
-#ifdef CONFIG_DRIVER_ETHER
-
-#if (CONFIG_COMMANDS & CFG_CMD_NET)
-
-/*
- * Name:
- * lxt972_IsPhyConnected
- * Description:
- * Reads the 2 PHY ID registers
- * Arguments:
- * p_mac - pointer to AT91S_EMAC struct
- * Return value:
- * TRUE - if id read successfully
- * FALSE- if error
- */
-static unsigned int lxt972_IsPhyConnected (AT91PS_EMAC p_mac)
-{
- unsigned short Id1, Id2;
-
- at91rm9200_EmacEnableMDIO (p_mac);
- at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_ID1, &Id1);
- at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_ID2, &Id2);
- at91rm9200_EmacDisableMDIO (p_mac);
-
- if ((Id1 == (0x0013)) && ((Id2 & 0xFFF0) == 0x78E0))
- return TRUE;
-
- return FALSE;
-}
-
-/*
- * Name:
- * lxt972_GetLinkSpeed
- * Description:
- * Link parallel detection status of MAC is checked and set in the
- * MAC configuration registers
- * Arguments:
- * p_mac - pointer to MAC
- * Return value:
- * TRUE - if link status set succesfully
- * FALSE - if link status not set
- */
-static UCHAR lxt972_GetLinkSpeed (AT91PS_EMAC p_mac)
-{
- unsigned short stat1;
-
- if (!at91rm9200_EmacReadPhy (p_mac, PHY_LXT971_STAT2, &stat1))
- return FALSE;
-
- if (!(stat1 & PHY_LXT971_STAT2_LINK)) /* link status up? */
- return FALSE;
-
- if (stat1 & PHY_LXT971_STAT2_100BTX) {
-
- if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {
-
- /*set Emac for 100BaseTX and Full Duplex */
- p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;
- } else {
-
- /*set Emac for 100BaseTX and Half Duplex */
- p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
- ~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
- | AT91C_EMAC_SPD;
- }
-
- return TRUE;
-
- } else {
-
- if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {
-
- /*set MII for 10BaseT and Full Duplex */
- p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
- ~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
- | AT91C_EMAC_FD;
- } else {
-
- /*set MII for 10BaseT and Half Duplex */
- p_mac->EMAC_CFG &= ~(AT91C_EMAC_SPD | AT91C_EMAC_FD);
- }
-
- return TRUE;
- }
-
- return FALSE;
-}
-
-
-/*
- * Name:
- * lxt972_InitPhy
- * Description:
- * MAC starts checking its link by using parallel detection and
- * Autonegotiation and the same is set in the MAC configuration registers
- * Arguments:
- * p_mac - pointer to struct AT91S_EMAC
- * Return value:
- * TRUE - if link status set succesfully
- * FALSE - if link status not set
- */
-static UCHAR lxt972_InitPhy (AT91PS_EMAC p_mac)
-{
- UCHAR ret = TRUE;
-
- at91rm9200_EmacEnableMDIO (p_mac);
-
- if (!lxt972_GetLinkSpeed (p_mac)) {
- /* Try another time */
- ret = lxt972_GetLinkSpeed (p_mac);
- }
-
- /* Disable PHY Interrupts */
- at91rm9200_EmacWritePhy (p_mac, PHY_LXT971_INT_ENABLE, 0);
-
- at91rm9200_EmacDisableMDIO (p_mac);
-
- return (ret);
-}
-
-
-/*
- * Name:
- * lxt972_AutoNegotiate
- * Description:
- * MAC Autonegotiates with the partner status of same is set in the
- * MAC configuration registers
- * Arguments:
- * dev - pointer to struct net_device
- * Return value:
- * TRUE - if link status set successfully
- * FALSE - if link status not set
- */
-static UCHAR lxt972_AutoNegotiate (AT91PS_EMAC p_mac, int *status)
-{
- unsigned short value;
-
- /* Set lxt972 control register */
- if (!at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_CTRL, &value))
- return FALSE;
-
- /* Restart Auto_negotiation */
- value |= PHY_COMMON_CTRL_RES_AUTO;
- if (!at91rm9200_EmacWritePhy (p_mac, PHY_COMMON_CTRL, &value))
- return FALSE;
-
- /*check AutoNegotiate complete */
- udelay (10000);
- at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_STAT, &value);
- if (!(value & PHY_COMMON_STAT_AN_COMP))
- return FALSE;
-
- return (lxt972_GetLinkSpeed (p_mac));
-}
-
-
-/*
- * Name:
- * at91rm92000_GetPhyInterface
- * Description:
- * Initialise the interface functions to the PHY
- * Arguments:
- * None
- * Return value:
- * None
- */
-void at91rm92000_GetPhyInterface(AT91PS_PhyOps p_phyops)
-{
- p_phyops->Init = lxt972_InitPhy;
- p_phyops->IsPhyConnected = lxt972_IsPhyConnected;
- p_phyops->GetLinkSpeed = lxt972_GetLinkSpeed;
- p_phyops->AutoNegotiate = lxt972_AutoNegotiate;
-}
-
-#endif /* CONFIG_COMMANDS & CFG_CMD_NET */
-
-#endif /* CONFIG_DRIVER_ETHER */