LXR linux/arch/arm/mach-sa1100/include/mach/gpio.h

   1/*
   2 * arch/arm/mach-sa1100/include/mach/gpio.h
   3 *
   4 * SA1100 GPIO wrappers for arch-neutral GPIO calls
   5 *
   6 * Written by Philipp Zabel <philipp.zabel@gmail.com>
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; either version 2 of the License, or
  11 * (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, MA 02111-1307 USA
  21 *
  22 */
  23
  24#ifndef __ASM_ARCH_SA1100_GPIO_H
  25#define __ASM_ARCH_SA1100_GPIO_H
  26
  27#include <mach/hardware.h>
  28#include <asm/irq.h>
  29#include <asm-generic/gpio.h>
  30
  31static inline int gpio_get_value(unsigned gpio)
  32{
  33        if (__builtin_constant_p(gpio) && (gpio <= GPIO_MAX))
  34                return GPLR & GPIO_GPIO(gpio);
  35        else
  36                return __gpio_get_value(gpio);
  37}
  38
  39static inline void gpio_set_value(unsigned gpio, int value)
  40{
  41        if (__builtin_constant_p(gpio) && (gpio <= GPIO_MAX))
  42                if (value)
  43                        GPSR = GPIO_GPIO(gpio);
  44                else
  45                        GPCR = GPIO_GPIO(gpio);
  46        else
  47                __gpio_set_value(gpio, value);
  48}
  49
  50#define gpio_cansleep   __gpio_cansleep
  51
  52static inline unsigned gpio_to_irq(unsigned gpio)
  53{
  54        if (gpio < 11)
  55                return IRQ_GPIO0 + gpio;
  56        else
  57                return IRQ_GPIO11 - 11 + gpio;
  58}
  59
  60static inline unsigned irq_to_gpio(unsigned irq)
  61{
  62        if (irq < IRQ_GPIO11_27)
  63                return irq - IRQ_GPIO0;
  64        else
  65                return irq - IRQ_GPIO11 + 11;
  66}
  67
  68#endif
  69