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[u-boot] / cpu / arm920t / at91rm9200 / lxt972.c
diff --git a/cpu/arm920t/at91rm9200/lxt972.c b/cpu/arm920t/at91rm9200/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
- */
-
-/*
- * Adapted for KwikByte KB920x board: 22APR2005
- */
-
-#include <common.h>
-#include <at91rm9200_net.h>
-#include <net.h>
-#include <miiphy.h>
-#include <lxt971a.h>
-
-#ifdef CONFIG_DRIVER_ETHER
-
-#if defined(CONFIG_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
- */
-unsigned int lxt972_IsPhyConnected (AT91PS_EMAC p_mac)
-{
-       unsigned short Id1, Id2;
-
-       at91rm9200_EmacEnableMDIO (p_mac);
-       at91rm9200_EmacReadPhy(p_mac, PHY_PHYIDR1, &Id1);
-       at91rm9200_EmacReadPhy(p_mac, PHY_PHYIDR2, &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
- */
-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
- */
-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
- */
-UCHAR lxt972_AutoNegotiate (AT91PS_EMAC p_mac, int *status)
-{
-       unsigned short value;
-
-       /* Set lxt972 control register */
-       if (!at91rm9200_EmacReadPhy (p_mac, PHY_BMCR, &value))
-               return FALSE;
-
-       /* Restart Auto_negotiation  */
-       value |= PHY_BMCR_RST_NEG;
-       if (!at91rm9200_EmacWritePhy (p_mac, PHY_BMCR, &value))
-               return FALSE;
-
-       /*check AutoNegotiate complete */
-       udelay (10000);
-       at91rm9200_EmacReadPhy(p_mac, PHY_BMSR, &value);
-       if (!(value & PHY_BMSR_AUTN_COMP))
-               return FALSE;
-
-       return (lxt972_GetLinkSpeed (p_mac));
-}
-
-#endif
-
-#endif /* CONFIG_DRIVER_ETHER */