LXR uboot/arch/powerpc/cpu/mpc512x/iopin.c

   1/*
   2 * (C) Copyright 2008
   3 * Martha J Marx, Silicon Turnkey Express, mmarx@silicontkx.com
   4 * mpc512x I/O pin/pad initialization for the ADS5121 board
   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 <linux/types.h>
  26#include <asm/io.h>
  27
  28void iopin_initialize(iopin_t *ioregs_init, int len)
  29{
  30        short i, j, p;
  31        u32 *reg;
  32        immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
  33
  34        reg = (u32 *)&(im->io_ctrl);
  35
  36        if (sizeof(ioregs_init) == 0)
  37                return;
  38
  39        for (i = 0; i < len; i++) {
  40                for (p = 0, j = ioregs_init[i].p_offset / sizeof(u_long);
  41                        p < ioregs_init[i].nr_pins; p++, j++) {
  42                        if (ioregs_init[i].bit_or)
  43                                setbits_be32(reg + j, ioregs_init[i].val);
  44                        else
  45                                out_be32 (reg + j, ioregs_init[i].val);
  46                }
  47        }
  48        return;
  49}
  50