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
  31 static 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
  39 static 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
  52 static 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
  60 static 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