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 struct io_bb_pinset {
  30         int mdio;
  31         int mdc;
  32 };
  33
  34 static int io_bb_mii_init(struct bb_miiphy_bus *bus)
  35 {
  36         return 0;
  37 }
  38
  39 static int io_bb_mdio_active(struct bb_miiphy_bus *bus)
  40 {
  41         struct io_bb_pinset *pins = bus->priv;
  42
  43         out_be32((void *)GPIO0_TCR,
  44                 in_be32((void *)GPIO0_TCR) | pins->mdio);
  45
  46         return 0;
  47 }
  48
  49 static int io_bb_mdio_tristate(struct bb_miiphy_bus *bus)
  50 {
  51         struct io_bb_pinset *pins = bus->priv;
  52
  53         out_be32((void *)GPIO0_TCR,
  54                 in_be32((void *)GPIO0_TCR) & ~pins->mdio);
  55
  56         return 0;
  57 }
  58
  59 static int io_bb_set_mdio(struct bb_miiphy_bus *bus, int v)
  60 {
  61         struct io_bb_pinset *pins = bus->priv;
  62
  63         if (v)
  64                 out_be32((void *)GPIO0_OR,
  65                         in_be32((void *)GPIO0_OR) | pins->mdio);
  66         else
  67                 out_be32((void *)GPIO0_OR,
  68                         in_be32((void *)GPIO0_OR) & ~pins->mdio);
  69
  70         return 0;
  71 }
  72
  73 static int io_bb_get_mdio(struct bb_miiphy_bus *bus, int *v)
  74 {
  75         struct io_bb_pinset *pins = bus->priv;
  76
  77         *v = ((in_be32((void *)GPIO0_IR) & pins->mdio) != 0);
  78
  79         return 0;
  80 }
  81
  82 static int io_bb_set_mdc(struct bb_miiphy_bus *bus, int v)
  83 {
  84         struct io_bb_pinset *pins = bus->priv;
  85
  86         if (v)
  87                 out_be32((void *)GPIO0_OR,
  88                         in_be32((void *)GPIO0_OR) | pins->mdc);
  89         else
  90                 out_be32((void *)GPIO0_OR,
  91                         in_be32((void *)GPIO0_OR) & ~pins->mdc);
  92
  93         return 0;
  94 }
  95
  96 static int io_bb_delay(struct bb_miiphy_bus *bus)
  97 {
  98         udelay(1);
  99
 100         return 0;
 101 }
 102
 103 struct io_bb_pinset io_bb_pinsets[] = {
 104         {
 105                 .mdio = CONFIG_SYS_MDIO_PIN,
 106                 .mdc = CONFIG_SYS_MDC_PIN,
 107         },
 108 #ifdef CONFIG_SYS_GBIT_MII1_BUSNAME
 109         {
 110                 .mdio = CONFIG_SYS_MDIO1_PIN,
 111                 .mdc = CONFIG_SYS_MDC1_PIN,
 112         },
 113 #endif
 114 };
 115
 116 struct bb_miiphy_bus bb_miiphy_buses[] = {
 117         {
 118                 .name = CONFIG_SYS_GBIT_MII_BUSNAME,
 119                 .init = io_bb_mii_init,
 120                 .mdio_active = io_bb_mdio_active,
 121                 .mdio_tristate = io_bb_mdio_tristate,
 122                 .set_mdio = io_bb_set_mdio,
 123                 .get_mdio = io_bb_get_mdio,
 124                 .set_mdc = io_bb_set_mdc,
 125                 .delay = io_bb_delay,
 126                 .priv = &io_bb_pinsets[0],
 127         },
 128 #ifdef CONFIG_SYS_GBIT_MII1_BUSNAME
 129         {
 130                 .name = CONFIG_SYS_GBIT_MII1_BUSNAME,
 131                 .init = io_bb_mii_init,
 132                 .mdio_active = io_bb_mdio_active,
 133                 .mdio_tristate = io_bb_mdio_tristate,
 134                 .set_mdio = io_bb_set_mdio,
 135                 .get_mdio = io_bb_get_mdio,
 136                 .set_mdc = io_bb_set_mdc,
 137                 .delay = io_bb_delay,
 138                 .priv = &io_bb_pinsets[1],
 139         },
 140 #endif
 141 };
 142
 143 int bb_miiphy_buses_num = sizeof(bb_miiphy_buses) /
 144                           sizeof(bb_miiphy_buses[0]);