52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
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/***************************************************************************
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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) 2006 by Linus Nielsen Feltzing
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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 <stdbool.h>
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#include "cpu.h"
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#include "system.h"
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#include "kernel.h"
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void usb_init_device(void)
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{
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or_l(0x00000080, &GPIO1_FUNCTION); /* GPIO39 is the USB detect input */
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and_l(~0x01000040, &GPIO_OUT); /* GPIO24 is the Cypress chip power */
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or_l(0x01000040, &GPIO_ENABLE);
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or_l(0x01000040, &GPIO_FUNCTION);
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}
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bool usb_detect(void)
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{
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return (GPIO1_READ & 0x80)?true:false;
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}
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void usb_enable(bool on)
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{
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if(on)
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{
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/* Power on the Cypress chip */
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or_l(0x01000040, &GPIO_OUT);
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sleep(2);
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}
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else
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{
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/* Power off the Cypress chip */
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and_l(~0x01000040, &GPIO_OUT);
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}
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}
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