include/mxc_gpio.h

   1 /*
   2  *
   3  * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (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,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #ifndef __MXC_GPIO_H
  25 #define __MXC_GPIO_H
  26
  27 enum mxc_gpio_direction {
  28         MXC_GPIO_DIRECTION_IN,
  29         MXC_GPIO_DIRECTION_OUT,
  30 };
  31
  32 #ifdef CONFIG_MXC_GPIO
  33 extern int mxc_gpio_direction(unsigned int gpio,
  34                                enum mxc_gpio_direction direction);
  35 extern void mxc_gpio_set(unsigned int gpio, unsigned int value);
  36 extern int mxc_gpio_get(unsigned int gpio);
  37 #else
  38 static inline int mxc_gpio_direction(unsigned int gpio,
  39                                       enum mxc_gpio_direction direction)
  40 {
  41         return 1;
  42 }
  43 static inline int mxc_gpio_get(unsigned int gpio)
  44 {
  45         return 1;
  46 }
  47 static inline void mxc_gpio_set(unsigned int gpio, unsigned int value)
  48 {
  49 }
  50 #endif
  51
  52 #endif