a0b81bdbfc
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31323 a1c6a512-1295-4272-9138-f99709370657
143 lines
3.4 KiB
C
143 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 (C) 2011 by Tomasz Moń
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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 "kernel.h"
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#include "usb.h"
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#ifdef HAVE_USBSTACK
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#include "usb_drv.h"
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#include "usb_core.h"
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#endif
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static bool usb_is_connected = false;
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static int usb_detect_callback(struct timeout *tmo)
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{
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(void)tmo;
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if (IO_GIO_BITSET0 & (1 << 9))
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{
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/* Set GIO33 as normal output, drive it low */
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IO_GIO_FSEL3 &= ~(0x0003);
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IO_GIO_BITCLR2 = (1 << 1);
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/* Disable M48XI crystal resonator */
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IO_CLK_LPCTL1 |= 0x01;
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/* Drive reset low */
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IO_GIO_BITCLR0 = (1 << 7);
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/* Disable VLYNQ clock */
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IO_CLK_MOD2 &= ~(1 << 13);
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usb_is_connected = false;
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}
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else
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{
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/* Enable M48XI crystal resonator */
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IO_CLK_LPCTL1 &= ~(0x01);
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/* Set GIO33 as CLKOUT1B */
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IO_GIO_FSEL3 |= 0x0003;
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/* Drive reset high */
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IO_GIO_BITSET0 = (1 << 7);
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/* Enable VLYNQ clock */
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IO_CLK_MOD2 |= (1 << 13);
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usb_is_connected = true;
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}
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return 0;
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}
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void GIO9(void) __attribute__ ((section(".icode")));
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void GIO9(void)
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{
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static struct timeout usb_oneshot;
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/* Clear interrupt */
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IO_INTC_IRQ1 = (1 << 14);
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timeout_register(&usb_oneshot, usb_detect_callback, HZ, 0);
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}
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bool usb_drv_connected(void)
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{
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return false;
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}
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int usb_detect(void)
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{
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if (usb_is_connected == true)
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{
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return USB_INSERTED;
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}
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else
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{
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return USB_EXTRACTED;
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}
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}
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void usb_init_device(void)
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{
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/* set VLYNQ port functions */
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IO_GIO_FSEL1 = 0xAAAA;
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IO_GIO_FSEL2 = (IO_GIO_FSEL2 & 0xFFF0) | 0xA;
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/* set GIO7 as output (TNETV reset) */
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/* set GIO9 as input (USB inserted indicator) */
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IO_GIO_INV0 &= ~((1 << 7) | (1 << 9));
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IO_GIO_DIR0 = (IO_GIO_DIR0 & ~(1 << 7)) | (1 << 9);
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/* Enable interrupt on GIO9 change (any edge) */
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IO_GIO_IRQPORT |= (1 << 9);
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IO_GIO_IRQEDGE |= (1 << 9);
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/* set GIO33 as output (TNETV clock) */
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IO_GIO_DIR2 &= ~(1 << 1);
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IO_GIO_INV2 &= ~(1 << 1);
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/* use M48XI clock on GIO33 */
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IO_CLK_OSEL = (IO_CLK_OSEL & 0xF0F) | 0x50;
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/* Powerdown internal USB */
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IO_CLK_LPCTL1 = 0x11;
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/* Disable internal USB clock */
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IO_CLK_MOD2 &= ~(1 << 6);
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/* Enable USB insert detection interrupt */
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IO_INTC_EINT1 |= (1 << 14);
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/* Check if USB is connected */
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usb_detect_callback(NULL);
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}
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void usb_enable(bool on)
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{
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(void)on;
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}
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void usb_attach(void)
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{
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}
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