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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (c) 2010 Michael Sevakis
*
* i.MX31 IOMUXC helper routines
*
* 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 "config.h"
#include "system.h"
#include "iomuxc-imx31.h"
/* Set the pin multiplexing configuration (functional, GPIO, etc.) */
void iomuxc_set_pin_mux(enum IMX31_IOMUXC_PINS pin,
unsigned long mux)
{
unsigned long index = pin / 4;
unsigned int shift = 8*(pin % 4);
imx31_regmod32((unsigned long *)(IOMUXC_BASE_ADDR + 0xc) + index,
mux << shift, IOMUXC_MUX_MASK << shift);
}
/* Set the pin pad configuration (keeper, drive strength, etc.) */
void iomuxc_set_pad_config(enum IMX31_IOMUXC_PINS pin,
unsigned long config)
{
unsigned long padoffs = pin + 2;
unsigned long index = padoffs / 3;
unsigned int shift = 10*(padoffs % 3);
imx31_regmod32((unsigned long *)(IOMUXC_BASE_ADDR + 0x154) + index,
config << shift, IOMUXC_PAD_MASK << shift);
}
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