7c1fa7cf61
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23998 a1c6a512-1295-4272-9138-f99709370657
88 lines
2.8 KiB
C
88 lines
2.8 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) 2007, 2009 by Karl Kurbjun
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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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/*#define LOGF_ENABLE*/
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#include "config.h"
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#include "logf.h"
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#include "cpu.h"
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#include "system.h"
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#include "m66591.h"
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void usb_init_device(void) {
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logf("mxx: SOC Init");
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/* The following EMIF timing values are from the OF:
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* IO_EMIF_CS4CTRL1 = 0x66AB;
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* IO_EMIF_CS4CTRL2 = 0x4220;
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*
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* These EMIF timing values are more agressive, but appear to work as long
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* as USB_TRANS_BLOCK is defined in the USB driver:
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* IO_EMIF_CS4CTRL1 = 0x2245;
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* IO_EMIF_CS4CTRL2 = 0x4110;
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*
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* When USB_TRANS_BLOCK is not defined the USB driver does not work unless
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* the values from the OF are used.
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*/
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IO_EMIF_CS4CTRL1 = 0x2245;
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IO_EMIF_CS4CTRL2 = 0x4110;
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/* Setup the m66591 reset signal */
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/* 2: output, non-inverted, no-irq, falling edge, no-chat, normal */
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dm320_set_io(2, false, false, false, false, false, 0x00);
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/* Setup the m66591 interrupt signal */
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/* 3: input , non-inverted, irq, falling edge, no-chat, normal */
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dm320_set_io(3, true, false, true, false, false, 0x00);
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udelay(100);
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/* Drive the reset pin low */
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IO_GIO_BITCLR0 = 1<<2;
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/* Wait a bit */
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udelay(100);
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/* Release the reset (drive it high) */
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IO_GIO_BITSET0 = 1<<2;
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udelay(500);
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/* Enable the MXX interrupt */
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IO_INTC_EINT1 |= (1<<8); /* IRQ_GIO3 */
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}
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/* This is the initial interupt handler routine for the USB controller */
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void GIO3 (void) __attribute__ ((section(".icode")));
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void GIO3 (void) {
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/* Clear the interrupt, this is critical to do before running the full
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* handler otherwise you might miss an interrupt and everything will stop
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* working.
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*
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* The M66591 interrupt line is attached to GPIO3.
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*/
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IO_INTC_IRQ1 = (1<<8);
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/* Start the full handler which is located in the driver */
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USB_DEVICE();
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}
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