cmd_dataflash_mmc_mux.c 1.7 KB

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  1. /*
  2. * (C) Copyright 2000
  3. * Wolfgang Denk, DENX Software Engineering, wd@denx.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. #include <common.h>
  24. #include <command.h>
  25. static int mmc_nspi (const char *);
  26. int do_dataflash_mmc_mux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  27. {
  28. switch (argc) {
  29. case 2: /* on / off */
  30. switch (mmc_nspi (argv[1])) {
  31. case 0: AT91F_SelectSPI ();
  32. break;
  33. case 1: AT91F_SelectMMC ();
  34. break;
  35. }
  36. case 1: /* get status */
  37. printf ("Mux is configured to be %s\n",
  38. AT91F_GetMuxStatus () ? "MMC" : "SPI");
  39. return 0;
  40. default:
  41. printf ("Usage:\n%s\n", cmdtp->usage);
  42. return 1;
  43. }
  44. return 0;
  45. }
  46. static int mmc_nspi (const char *s)
  47. {
  48. if (strcmp (s, "mmc") == 0) {
  49. return 1;
  50. } else if (strcmp (s, "spi") == 0) {
  51. return 0;
  52. }
  53. return -1;
  54. }
  55. U_BOOT_CMD(
  56. dataflash_mmc_mux, 2, 1, do_dataflash_mmc_mux,
  57. "dataflash_mmc_mux\t- enable or disable MMC or SPI\n",
  58. "[mmc, spi]\n"
  59. " - enable or disable MMC or SPI"
  60. );