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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007, 2009 by Karl Kurbjun
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/*#define LOGF_ENABLE*/
#include "config.h"
#include "logf.h"
#include "cpu.h"
#include "system.h"
#include "m66591.h"
void usb_init_device(void) {
logf("mxx: SOC Init");
/* The following EMIF timing values are from the OF:
* IO_EMIF_CS4CTRL1 = 0x66AB;
* IO_EMIF_CS4CTRL2 = 0x4220;
*
* More agressive numbers may be possible, but it depends on the clocking
* setup.
*
* When USB_TRANS_BLOCK is not defined the USB driver does not work unless
* the values from the OF are used.
*/
IO_EMIF_CS4CTRL1 = 0x66AB;
IO_EMIF_CS4CTRL2 = 0x4220;
/* Setup the m66591 reset signal */
/* 2: output, non-inverted, no-irq, falling edge, no-chat, normal */
dm320_set_io(2, false, false, false, false, false, 0x00);
/* Setup the m66591 interrupt signal */
/* 3: input , non-inverted, irq, falling edge, no-chat, normal */
dm320_set_io(3, true, false, true, false, false, 0x00);
udelay(100);
/* Drive the reset pin low */
IO_GIO_BITCLR0 = 1<<2;
/* Wait a bit */
udelay(100);
/* Release the reset (drive it high) */
IO_GIO_BITSET0 = 1<<2;
udelay(500);
/* Enable the MXX interrupt */
IO_INTC_EINT1 |= (1<<8); /* IRQ_GIO3 */
}
/* This is the initial interupt handler routine for the USB controller */
void GIO3 (void) __attribute__ ((section(".icode")));
void GIO3 (void) {
/* Clear the interrupt, this is critical to do before running the full
* handler otherwise you might miss an interrupt and everything will stop
* working.
*
* The M66591 interrupt line is attached to GPIO3.
*/
IO_INTC_IRQ1 = (1<<8);
/* Start the full handler which is located in the driver */
USB_DEVICE();
}
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