gpio.h 1.3 KB

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  1. /*
  2. * (C) Copyright 2009 Alessandro Rubini
  3. *
  4. * See file CREDITS for list of people who contributed to this
  5. * project.
  6. *
  7. * This program is free software; you can redistribute it and/or
  8. * modify it under the terms of the GNU General Public License as
  9. * published by the Free Software Foundation; either version 2 of
  10. * the License, or (at your option) any later version.
  11. *
  12. * This program is distributed in the hope that it will be useful,
  13. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15. * GNU General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU General Public License
  18. * along with this program; if not, write to the Free Software
  19. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20. * MA 02111-1307 USA
  21. */
  22. #ifndef __NMK_GPIO_H__
  23. #define __NMK_GPIO_H__
  24. /*
  25. * These functions are called from the soft-i2c driver, but
  26. * are also used by board files to set output bits.
  27. */
  28. enum nmk_af { /* alternate function settings */
  29. GPIO_GPIO = 0,
  30. GPIO_ALT_A,
  31. GPIO_ALT_B,
  32. GPIO_ALT_C
  33. };
  34. extern void nmk_gpio_af(int gpio, int alternate_function);
  35. extern void nmk_gpio_dir(int gpio, int dir);
  36. extern void nmk_gpio_set(int gpio, int val);
  37. extern int nmk_gpio_get(int gpio);
  38. #endif /* __NMK_GPIO_H__ */