LXR linux/arch/arm/include/asm/hardware/iop3xx-gpio.h

   1/*
   2 * arch/arm/include/asm/hardware/iop3xx-gpio.h
   3 *
   4 * IOP3xx GPIO wrappers
   5 *
   6 * Copyright (c) 2008 Arnaud Patard <arnaud.patard@rtp-net.org>
   7 * Based on IXP4XX gpio.h file
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU General Public License as published by
  11 * the Free Software Foundation; either version 2 of the License, or
  12 * (at your option) any later version.
  13 *
  14 * This program is distributed in the hope that it will be useful,
  15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17 * GNU General Public License for more details.
  18 *
  19 * You should have received a copy of the GNU General Public License
  20 * along with this program; if not, write to the Free Software
  21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22 *
  23 */
  24
  25#ifndef __ASM_ARM_HARDWARE_IOP3XX_GPIO_H
  26#define __ASM_ARM_HARDWARE_IOP3XX_GPIO_H
  27
  28#include <mach/hardware.h>
  29#include <asm-generic/gpio.h>
  30
  31#define IOP3XX_N_GPIOS  8
  32
  33static inline int gpio_get_value(unsigned gpio)
  34{
  35        if (gpio > IOP3XX_N_GPIOS)
  36                return __gpio_get_value(gpio);
  37
  38        return gpio_line_get(gpio);
  39}
  40
  41static inline void gpio_set_value(unsigned gpio, int value)
  42{
  43        if (gpio > IOP3XX_N_GPIOS) {
  44                __gpio_set_value(gpio, value);
  45                return;
  46        }
  47        gpio_line_set(gpio, value);
  48}
  49
  50static inline int gpio_cansleep(unsigned gpio)
  51{
  52        if (gpio < IOP3XX_N_GPIOS)
  53                return 0;
  54        else
  55                return __gpio_cansleep(gpio);
  56}
  57
  58/*
  59 * The GPIOs are not generating any interrupt
  60 * Note : manuals are not clear about this
  61 */
  62static inline int gpio_to_irq(int gpio)
  63{
  64        return -EINVAL;
  65}
  66
  67static inline int irq_to_gpio(int gpio)
  68{
  69        return -EINVAL;
  70}
  71
  72#endif
  73
  74