gpio.c 1.3 KB

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  1. /* linux/arch/arm/mach-s3c2400/gpio.c
  2. *
  3. * Copyright (c) 2006 Lucas Correia Villa Real <lucasvr@gobolinux.org>
  4. *
  5. * S3C2400 GPIO support
  6. *
  7. * This program is free software; you can redistribute it and/or modify
  8. * it under the terms of the GNU General Public License as published by
  9. * the Free Software Foundation; either version 2 of the License, or
  10. * (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, MA 02111-1307 USA
  20. */
  21. #include <linux/kernel.h>
  22. #include <linux/init.h>
  23. #include <linux/module.h>
  24. #include <linux/interrupt.h>
  25. #include <linux/ioport.h>
  26. #include <asm/hardware.h>
  27. #include <asm/irq.h>
  28. #include <asm/io.h>
  29. #include <asm/arch/regs-gpio.h>
  30. int s3c2400_gpio_getirq(unsigned int pin)
  31. {
  32. if (pin < S3C2410_GPE0 || pin > S3C2400_GPE7_EINT7)
  33. return -1; /* not valid interrupts */
  34. return (pin - S3C2410_GPE0) + IRQ_EINT0;
  35. }
  36. EXPORT_SYMBOL(s3c2400_gpio_getirq);