474293a12b
Port USB driver from Sansa Connect Linux kernel sources. The device successfully enumerates and responds to SCSI commands but actual disk access does not work. The SCSI response sent to host mentions that both internal storage and microsd card are not present. Change-Id: Ic6c07da12382c15c0b069f23a75f7df9765b7525
101 lines
2.5 KiB
C
101 lines
2.5 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) 2011-2021 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_core.h"
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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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usb_status_event(usb_detect());
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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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int usb_detect(void)
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{
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if (IO_GIO_BITSET0 & (1 << 9))
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{
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return USB_EXTRACTED;
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}
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else
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{
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return USB_INSERTED;
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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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}
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void usb_enable(bool on)
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{
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if (on)
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{
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usb_core_init();
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}
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else
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{
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usb_core_exit();
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}
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}
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void usb_attach(void)
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{
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}
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