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 <linux/io.h>
  28 #include <mach/hardware.h>
  29 #include <asm/irq.h>
  30 #include <asm-generic/gpio.h>
  31
  32 #define __ARM_GPIOLIB_COMPLEX
  33
  34 static inline int gpio_get_value(unsigned gpio)
  35 {
  36         if (__builtin_constant_p(gpio) && (gpio <= GPIO_MAX))
  37                 return GPLR & GPIO_GPIO(gpio);
  38         else
  39                 return __gpio_get_value(gpio);
  40 }
  41
  42 static inline void gpio_set_value(unsigned gpio, int value)
  43 {
  44         if (__builtin_constant_p(gpio) && (gpio <= GPIO_MAX))
  45                 if (value)
  46                         GPSR = GPIO_GPIO(gpio);
  47                 else
  48                         GPCR = GPIO_GPIO(gpio);
  49         else
  50                 __gpio_set_value(gpio, value);
  51 }
  52
  53 #define gpio_cansleep   __gpio_cansleep
  54
  55 #endif