iopin.c 1.5 KB

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  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. #include <common.h>
  24. #include <linux/types.h>
  25. #include <asm/io.h>
  26. void iopin_initialize(iopin_t *ioregs_init, int len)
  27. {
  28. short i, j, p;
  29. u32 *reg;
  30. immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
  31. reg = (u32 *)&(im->io_ctrl);
  32. if (sizeof(ioregs_init) == 0)
  33. return;
  34. for (i = 0; i < len; i++) {
  35. for (p = 0, j = ioregs_init[i].p_offset / sizeof(u_long);
  36. p < ioregs_init[i].nr_pins; p++, j++) {
  37. if (ioregs_init[i].bit_or)
  38. setbits_be32(reg + j, ioregs_init[i].val);
  39. else
  40. out_be32 (reg + j, ioregs_init[i].val);
  41. }
  42. }
  43. return;
  44. }