70 lines
1.9 KiB
C
70 lines
1.9 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 "cpu.h"
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#include <stdbool.h>
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#include "kernel.h"
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#include "system.h"
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#include "power.h"
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#include "pcf50606.h"
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#include "ata-target.h"
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void ata_reset(void)
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{
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and_l(~0x00080000, &GPIO_OUT);
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sleep(1); /* > 25us */
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or_l(0x00080000, &GPIO_OUT);
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sleep(1); /* > 25us */
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}
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void ata_enable(bool on)
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{
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if(on)
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and_l(~0x00040000, &GPIO_OUT);
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else
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or_l(0x00040000, &GPIO_OUT);
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or_l(0x00040000, &GPIO_ENABLE);
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or_l(0x00040000, &GPIO_FUNCTION);
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}
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bool ata_is_coldstart(void)
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{
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return (GPIO_FUNCTION & 0x00080000) == 0;
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}
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void ata_device_init(void)
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{
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#ifdef HAVE_ATA_LED_CTRL
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/* Enable disk LED & ISD chip power control */
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and_l(~0x00000240, &GPIO_OUT);
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or_l( 0x00000240, &GPIO_ENABLE);
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or_l( 0x00000200, &GPIO_FUNCTION);
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#endif
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/* ATA reset */
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or_l(0x00080000, &GPIO_OUT);
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or_l(0x00080000, &GPIO_ENABLE);
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or_l(0x00080000, &GPIO_FUNCTION);
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}
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