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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Module wrapper for GPIO, using /dev/r0GPIO (r0Gpio.ko) of Samsung YP-R0
*
* Copyright (c) 2011 Lorenzo Miori
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <gpio_ypr0.h> /* includes r0GPIOioctl.h */
#include <sys/ioctl.h>
static int r0_gpio_dev = 0;
void gpio_init(void)
{
r0_gpio_dev = open("/dev/r0GPIO", O_RDONLY);
if (r0_gpio_dev < 0)
printf("/dev/r0GPIO open error!");
}
void gpio_close(void)
{
if (r0_gpio_dev < 0)
close(r0_gpio_dev);
}
int gpio_control_struct(int request, R0GPIOInfo r)
{
return ioctl(r0_gpio_dev, request, &r);
}
int gpio_control(int request, int num, int mode, int val)
{
R0GPIOInfo r = { .num = num, .mode = mode, .val = val, };
return ioctl(r0_gpio_dev, request, &r);
}
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