6cee7579db
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25698 a1c6a512-1295-4272-9138-f99709370657
50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (c) 2010 Michael Sevakis
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*
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* i.MX31 IOMUXC helper routines
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "system.h"
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#include "iomuxc-imx31.h"
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/* Set the pin multiplexing configuration (functional, GPIO, etc.) */
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void iomuxc_set_pin_mux(enum IMX31_IOMUXC_PINS pin,
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unsigned long mux)
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{
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unsigned long index = pin / 4;
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unsigned int shift = 8*(pin % 4);
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imx31_regmod32((unsigned long *)(IOMUXC_BASE_ADDR + 0xc) + index,
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mux << shift, IOMUXC_MUX_MASK << shift);
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}
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/* Set the pin pad configuration (keeper, drive strength, etc.) */
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void iomuxc_set_pad_config(enum IMX31_IOMUXC_PINS pin,
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unsigned long config)
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{
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unsigned long padoffs = pin + 2;
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unsigned long index = padoffs / 3;
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unsigned int shift = 10*(padoffs % 3);
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imx31_regmod32((unsigned long *)(IOMUXC_BASE_ADDR + 0x154) + index,
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config << shift, IOMUXC_PAD_MASK << shift);
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}
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