568c441fd8
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31498 a1c6a512-1295-4272-9138-f99709370657
59 lines
1.7 KiB
C
59 lines
1.7 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) 2006 by Linus Nielsen Feltzing
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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 <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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#include "usb.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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/* ISD300 3.3V ON */
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or_l(8,&GPIO1_FUNCTION);
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or_l(8,&GPIO1_OUT);
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or_l(8,&GPIO1_ENABLE);
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/* Tristate the SCK/SDA to the ISD300 config EEPROM */
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and_l(~0x03000000, &GPIO_ENABLE);
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or_l(0x03000000, &GPIO_FUNCTION);
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}
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int usb_detect(void)
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{
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return (GPIO1_READ & 0x80) ? USB_INSERTED : USB_EXTRACTED;
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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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and_l(~0x00000008,&GPIO1_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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or_l(0x00000008,&GPIO1_OUT);
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}
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}
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