board/gdsys/common/miiphybb.c

   1 /*
   2  * (C) Copyright 2010
   3  * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <miiphy.h>
  26
  27 #include <asm/io.h>
  28
  29 static int io_bb_mii_init(struct bb_miiphy_bus *bus)
  30 {
  31         return 0;
  32 }
  33
  34 static int io_bb_mdio_active(struct bb_miiphy_bus *bus)
  35 {
  36         out_be32((void *)GPIO0_TCR,
  37                 in_be32((void *)GPIO0_TCR) | CONFIG_SYS_MDIO_PIN);
  38
  39         return 0;
  40 }
  41
  42 static int io_bb_mdio_tristate(struct bb_miiphy_bus *bus)
  43 {
  44         out_be32((void *)GPIO0_TCR,
  45                 in_be32((void *)GPIO0_TCR) & ~CONFIG_SYS_MDIO_PIN);
  46
  47         return 0;
  48 }
  49
  50 static int io_bb_set_mdio(struct bb_miiphy_bus *bus, int v)
  51 {
  52         if (v)
  53                 out_be32((void *)GPIO0_OR,
  54                         in_be32((void *)GPIO0_OR) | CONFIG_SYS_MDIO_PIN);
  55         else
  56                 out_be32((void *)GPIO0_OR,
  57                         in_be32((void *)GPIO0_OR) & ~CONFIG_SYS_MDIO_PIN);
  58
  59         return 0;
  60 }
  61
  62 static int io_bb_get_mdio(struct bb_miiphy_bus *bus, int *v)
  63 {
  64         *v = ((in_be32((void *)GPIO0_IR) & CONFIG_SYS_MDIO_PIN) != 0);
  65
  66         return 0;
  67 }
  68
  69 static int io_bb_set_mdc(struct bb_miiphy_bus *bus, int v)
  70 {
  71         if (v)
  72                 out_be32((void *)GPIO0_OR,
  73                         in_be32((void *)GPIO0_OR) | CONFIG_SYS_MDC_PIN);
  74         else
  75                 out_be32((void *)GPIO0_OR,
  76                         in_be32((void *)GPIO0_OR) & ~CONFIG_SYS_MDC_PIN);
  77
  78         return 0;
  79 }
  80
  81 static int io_bb_delay(struct bb_miiphy_bus *bus)
  82 {
  83         udelay(1);
  84
  85         return 0;
  86 }
  87
  88 struct bb_miiphy_bus bb_miiphy_buses[] = {
  89         {
  90                 .name = CONFIG_SYS_GBIT_MII_BUSNAME,
  91                 .init = io_bb_mii_init,
  92                 .mdio_active = io_bb_mdio_active,
  93                 .mdio_tristate = io_bb_mdio_tristate,
  94                 .set_mdio = io_bb_set_mdio,
  95                 .get_mdio = io_bb_get_mdio,
  96                 .set_mdc = io_bb_set_mdc,
  97                 .delay = io_bb_delay,
  98         }
  99 };
 100
 101 int bb_miiphy_buses_num = sizeof(bb_miiphy_buses) /
 102                           sizeof(bb_miiphy_buses[0]);