board/gdsys/common/miiphybb.c

   1 /*
   2  * (C) Copyright 2010
   3  * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <miiphy.h>
  10
  11 #include <asm/io.h>
  12
  13 struct io_bb_pinset {
  14         int mdio;
  15         int mdc;
  16 };
  17
  18 static int io_bb_mii_init(struct bb_miiphy_bus *bus)
  19 {
  20         return 0;
  21 }
  22
  23 static int io_bb_mdio_active(struct bb_miiphy_bus *bus)
  24 {
  25         struct io_bb_pinset *pins = bus->priv;
  26
  27         out_be32((void *)GPIO0_TCR,
  28                 in_be32((void *)GPIO0_TCR) | pins->mdio);
  29
  30         return 0;
  31 }
  32
  33 static int io_bb_mdio_tristate(struct bb_miiphy_bus *bus)
  34 {
  35         struct io_bb_pinset *pins = bus->priv;
  36
  37         out_be32((void *)GPIO0_TCR,
  38                 in_be32((void *)GPIO0_TCR) & ~pins->mdio);
  39
  40         return 0;
  41 }
  42
  43 static int io_bb_set_mdio(struct bb_miiphy_bus *bus, int v)
  44 {
  45         struct io_bb_pinset *pins = bus->priv;
  46
  47         if (v)
  48                 out_be32((void *)GPIO0_OR,
  49                         in_be32((void *)GPIO0_OR) | pins->mdio);
  50         else
  51                 out_be32((void *)GPIO0_OR,
  52                         in_be32((void *)GPIO0_OR) & ~pins->mdio);
  53
  54         return 0;
  55 }
  56
  57 static int io_bb_get_mdio(struct bb_miiphy_bus *bus, int *v)
  58 {
  59         struct io_bb_pinset *pins = bus->priv;
  60
  61         *v = ((in_be32((void *)GPIO0_IR) & pins->mdio) != 0);
  62
  63         return 0;
  64 }
  65
  66 static int io_bb_set_mdc(struct bb_miiphy_bus *bus, int v)
  67 {
  68         struct io_bb_pinset *pins = bus->priv;
  69
  70         if (v)
  71                 out_be32((void *)GPIO0_OR,
  72                         in_be32((void *)GPIO0_OR) | pins->mdc);
  73         else
  74                 out_be32((void *)GPIO0_OR,
  75                         in_be32((void *)GPIO0_OR) & ~pins->mdc);
  76
  77         return 0;
  78 }
  79
  80 static int io_bb_delay(struct bb_miiphy_bus *bus)
  81 {
  82         udelay(1);
  83
  84         return 0;
  85 }
  86
  87 struct io_bb_pinset io_bb_pinsets[] = {
  88         {
  89                 .mdio = CONFIG_SYS_MDIO_PIN,
  90                 .mdc = CONFIG_SYS_MDC_PIN,
  91         },
  92 #ifdef CONFIG_SYS_GBIT_MII1_BUSNAME
  93         {
  94                 .mdio = CONFIG_SYS_MDIO1_PIN,
  95                 .mdc = CONFIG_SYS_MDC1_PIN,
  96         },
  97 #endif
  98 };
  99
 100 struct bb_miiphy_bus bb_miiphy_buses[] = {
 101         {
 102                 .name = CONFIG_SYS_GBIT_MII_BUSNAME,
 103                 .init = io_bb_mii_init,
 104                 .mdio_active = io_bb_mdio_active,
 105                 .mdio_tristate = io_bb_mdio_tristate,
 106                 .set_mdio = io_bb_set_mdio,
 107                 .get_mdio = io_bb_get_mdio,
 108                 .set_mdc = io_bb_set_mdc,
 109                 .delay = io_bb_delay,
 110                 .priv = &io_bb_pinsets[0],
 111         },
 112 #ifdef CONFIG_SYS_GBIT_MII1_BUSNAME
 113         {
 114                 .name = CONFIG_SYS_GBIT_MII1_BUSNAME,
 115                 .init = io_bb_mii_init,
 116                 .mdio_active = io_bb_mdio_active,
 117                 .mdio_tristate = io_bb_mdio_tristate,
 118                 .set_mdio = io_bb_set_mdio,
 119                 .get_mdio = io_bb_get_mdio,
 120                 .set_mdc = io_bb_set_mdc,
 121                 .delay = io_bb_delay,
 122                 .priv = &io_bb_pinsets[1],
 123         },
 124 #endif
 125 };
 126
 127 int bb_miiphy_buses_num = sizeof(bb_miiphy_buses) /
 128                           sizeof(bb_miiphy_buses[0]);