/****************************************************************************
* arch/arm/src/imx/imx_gpio.c
* arch/arm/src/chip/imx_gpio.c
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
#include "up_arch.h"
#include "imx_gpio.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Funtions
****************************************************************************/
/****************************************************************************
* Name: imxgpio_configoutput
****************************************************************************/
void imxgpio_configoutput(int port, int bit, int value)
{
imxgpio_configinput(port, bit); /* Same as input except: */
imxgpio_dirout(port, bit); /* Output */
if (value)
{
imxgpio_setoutput(port, bit); /* Set output = 1 */
}
else
{
imxgpio_clroutput(port, bit); /* Set output = 0 */
}
}
/****************************************************************************
* Name: imxgpio_configinput
****************************************************************************/
void imxgpio_configinput(int port, int bit)
{
imxgpio_pullupdisable(port, bit); /* No pullup */
imxgpio_dirin(port, bit); /* Input */
imxgpio_gpiofunc(port, bit); /* Use as GPIO */
imxgpio_primaryperipheralfunc(port, bit); /* Not necessary */
imxgpio_ocrain(port, bit); /* Output AIN */
imxgpio_aoutgpio(port, bit); /* AOUT input is GPIO */
imxgpio_boutgpio(port, bit); /* BOUT input is GPIO */
}
/****************************************************************************
* Name: imxgpio_configpfoutput
****************************************************************************/
void imxgpio_configpfoutput(int port, int bit)
{
imxgpio_configinput(port, bit); /* Same as input except: */
imxgpio_peripheralfunc(port, bit); /* Use as peripheral */
imxgpio_primaryperipheralfunc(port, bit); /* Primary function*/
imxgpio_dirout(port, bit); /* Make output */
}
/****************************************************************************
* Name: imxgpio_configpfinput
****************************************************************************/
void imxgpio_configpfinput(int port, int bit)
{
imxgpio_configinput(port, bit); /* Same as input except: */
imxgpio_peripheralfunc(port, bit); /* Use as peripheral */
imxgpio_primaryperipheralfunc(port, bit); /* Primary function*/
}
