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 __ARM_GPIOLIB_COMPLEX
  32
  33 #define IOP3XX_N_GPIOS  8
  34
  35 static inline int gpio_get_value(unsigned gpio)
  36 {
  37         if (gpio > IOP3XX_N_GPIOS)
  38                 return __gpio_get_value(gpio);
  39
  40         return gpio_line_get(gpio);
  41 }
  42
  43 static inline void gpio_set_value(unsigned gpio, int value)
  44 {
  45         if (gpio > IOP3XX_N_GPIOS) {
  46                 __gpio_set_value(gpio, value);
  47                 return;
  48         }
  49         gpio_line_set(gpio, value);
  50 }
  51
  52 static inline int gpio_cansleep(unsigned gpio)
  53 {
  54         if (gpio < IOP3XX_N_GPIOS)
  55                 return 0;
  56         else
  57                 return __gpio_cansleep(gpio);
  58 }
  59
  60 /*
  61  * The GPIOs are not generating any interrupt
  62  * Note : manuals are not clear about this
  63  */
  64 static inline int gpio_to_irq(int gpio)
  65 {
  66         return -EINVAL;
  67 }
  68
  69 static inline int irq_to_gpio(int gpio)
  70 {
  71         return -EINVAL;
  72 }
  73
  74 #endif
  75