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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 by Linus Nielsen Feltzing
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include <stdbool.h>
#include "cpu.h"
#include "system.h"
#include "kernel.h"
void usb_init_device(void)
{
or_l(0x00000080, &GPIO1_FUNCTION); /* GPIO39 is the USB detect input */
and_l(~0x01000040, &GPIO_OUT); /* GPIO24 is the Cypress chip power */
or_l(0x01000040, &GPIO_ENABLE);
or_l(0x01000040, &GPIO_FUNCTION);
}
bool usb_detect(void)
{
return (GPIO1_READ & 0x80)?true:false;
}
void usb_enable(bool on)
{
if(on)
{
/* Power on the Cypress chip */
or_l(0x01000040, &GPIO_OUT);
sleep(2);
}
else
{
/* Power off the Cypress chip */
and_l(~0x01000040, &GPIO_OUT);
}
}
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