149 lines
3.4 KiB
C
149 lines
3.4 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 © 2008 Rafaël Carré
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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 "system.h"
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#include "usb.h"
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#ifdef HAVE_USBSTACK
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#include "usb_core.h"
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#endif
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#include "power.h"
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#include "as3525.h"
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#include "usb_drv.h"
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#if CONFIG_USBOTG == USBOTG_DESIGNWARE
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#include "usb-designware.h"
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const struct usb_dw_config usb_dw_config =
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{
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.phytype = DWC_PHYTYPE_UTMI_16,
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/* Available FIFO memory: 0x535 words */
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.rx_fifosz = 0x215,
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.nptx_fifosz = 0x20, /* 1 dedicated FIFO for IN0 */
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.ptx_fifosz = 0x100, /* 3 dedicated FIFOs for IN1,IN3,IN5 */
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#ifdef USB_DW_ARCH_SLAVE
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.disable_double_buffering = false,
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#else
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.ahb_burst_len = HBSTLEN_INCR8,
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.ahb_threshold = 8,
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#endif
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};
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#endif /* USBOTG_DESIGNWARE */
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static int usb_status = USB_EXTRACTED;
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void usb_enable(bool on)
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{
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#if defined(HAVE_USBSTACK)
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static int boosted = 0;
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if (on){
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if (boosted == 0)
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{
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cpu_boost(1);
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boosted = 1;
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}
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usb_core_init();
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} else {
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usb_core_exit();
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if(boosted == 1)
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{
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cpu_boost(0);
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boosted = 0;
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}
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}
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#else
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(void)on;
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#endif
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}
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void usb_insert_int(void)
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{
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usb_status = USB_INSERTED;
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#ifdef USB_STATUS_BY_EVENT
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usb_status_event(USB_INSERTED);
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#endif
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}
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void usb_remove_int(void)
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{
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usb_status = USB_EXTRACTED;
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#ifdef USB_STATUS_BY_EVENT
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usb_status_event(USB_EXTRACTED);
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#endif
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}
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int usb_detect(void)
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{
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return usb_status;
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}
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void usb_init_device(void)
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{
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#if CONFIG_USBOTG == USBOTG_DESIGNWARE
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/* Power up the core clocks to allow writing
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to some registers needed to power it down */
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usb_dw_target_disable_irq();
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usb_dw_target_enable_clocks();
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usb_drv_exit();
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}
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void usb_dw_target_enable_clocks()
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{
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bitset32(&CGU_PERI, CGU_USB_CLOCK_ENABLE);
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CCU_USB = (CCU_USB & ~(3<<24)) | (1 << 24); /* ?? */
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/* PHY clock */
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CGU_USB = 1<<5 /* enable */
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| 0 << 2
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| 0; /* source = ? (24MHz crystal?) */
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/* Do something that is probably CCU related but undocumented*/
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CCU_USB |= 0x1000;
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CCU_USB &= ~0x300000;
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udelay(400);
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}
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void usb_dw_target_disable_clocks()
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{
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CGU_USB = 0;
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bitclr32(&CGU_PERI, CGU_USB_CLOCK_ENABLE);
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/* reset USB_PHY to prevent power consumption */
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CCU_SRC = CCU_SRC_USB_PHY_EN;
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CCU_SRL = CCU_SRL_MAGIC_NUMBER;
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CCU_SRL = 0;
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}
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void usb_dw_target_enable_irq()
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{
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VIC_INT_ENABLE = INTERRUPT_USB;
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}
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void usb_dw_target_disable_irq()
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{
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VIC_INT_EN_CLEAR = INTERRUPT_USB;
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}
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void usb_dw_target_clear_irq()
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{
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#endif /* USBOTG_DESIGNWARE */
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}
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