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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright © 2008 Rafaël Carré
*
* 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.
*
****************************************************************************/
#include "config.h"
#include "system.h"
#include "usb.h"
#ifdef HAVE_USBSTACK
#include "usb_core.h"
#endif
#include "power.h"
#include "as3525.h"
#include "usb_drv.h"
#if CONFIG_USBOTG == USBOTG_DESIGNWARE
#include "usb-designware.h"
const struct usb_dw_config usb_dw_config =
{
.phytype = DWC_PHYTYPE_UTMI_16,
/* Available FIFO memory: 0x535 words */
.rx_fifosz = 0x215,
.nptx_fifosz = 0x20, /* 1 dedicated FIFO for IN0 */
.ptx_fifosz = 0x100, /* 3 dedicated FIFOs for IN1,IN3,IN5 */
#ifdef USB_DW_ARCH_SLAVE
.disable_double_buffering = false,
#else
.ahb_burst_len = HBSTLEN_INCR8,
.ahb_threshold = 8,
#endif
};
#endif /* USBOTG_DESIGNWARE */
static int usb_status = USB_EXTRACTED;
void usb_enable(bool on)
{
#if defined(HAVE_USBSTACK)
if (on){
cpu_boost(1);
usb_core_init();
} else {
usb_core_exit();
cpu_boost(0);
}
#else
(void)on;
#endif
}
void usb_insert_int(void)
{
usb_status = USB_INSERTED;
#ifdef USB_STATUS_BY_EVENT
usb_status_event(USB_INSERTED);
#endif
}
void usb_remove_int(void)
{
usb_status = USB_EXTRACTED;
#ifdef USB_STATUS_BY_EVENT
usb_status_event(USB_EXTRACTED);
#endif
}
int usb_detect(void)
{
return usb_status;
}
void usb_init_device(void)
{
#if CONFIG_USBOTG == USBOTG_DESIGNWARE
/* Power up the core clocks to allow writing
to some registers needed to power it down */
usb_dw_target_disable_irq();
usb_dw_target_enable_clocks();
usb_drv_exit();
}
void usb_dw_target_enable_clocks()
{
bitset32(&CGU_PERI, CGU_USB_CLOCK_ENABLE);
CCU_USB = (CCU_USB & ~(3<<24)) | (1 << 24); /* ?? */
/* PHY clock */
CGU_USB = 1<<5 /* enable */
| 0 << 2
| 0; /* source = ? (24MHz crystal?) */
/* Do something that is probably CCU related but undocumented*/
CCU_USB |= 0x1000;
CCU_USB &= ~0x300000;
udelay(400);
}
void usb_dw_target_disable_clocks()
{
CGU_USB = 0;
bitclr32(&CGU_PERI, CGU_USB_CLOCK_ENABLE);
/* reset USB_PHY to prevent power consumption */
CCU_SRC = CCU_SRC_USB_PHY_EN;
CCU_SRL = CCU_SRL_MAGIC_NUMBER;
CCU_SRL = 0;
}
void usb_dw_target_enable_irq()
{
VIC_INT_ENABLE = INTERRUPT_USB;
}
void usb_dw_target_disable_irq()
{
VIC_INT_EN_CLEAR = INTERRUPT_USB;
}
void usb_dw_target_clear_irq()
{
#endif /* USBOTG_DESIGNWARE */
}
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