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/***************************************************************************
* __________ __ ___
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2018 by Marcin Bukat
*
* 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 <stdlib.h>
#include <sys/mount.h>
#include <string.h>
#include "config.h"
#include "disk.h"
#include "usb.h"
#include "sysfs.h"
#include "power.h"
static bool adb_mode = false;
/* TODO: implement usb detection properly */
int usb_detect(void)
{
return power_input_status() == POWER_INPUT_USB_CHARGER ? USB_INSERTED : USB_EXTRACTED;
}
void usb_enable(bool on)
{
/* Ignore usb enable/disable when ADB is enabled so we can fireup adb shell
* without entering ums mode
*/
if (!adb_mode)
{
sysfs_set_int("/sys/class/android_usb/android0/enable", on ? 1 : 0);
}
}
/* This is called by usb thread after usb extract in order to return
* regular FS access
*
* returns the # of successful mounts
*/
int disk_mount_all(void)
{
const char *dev[] = {"/dev/mmcblk0p1", "/dev/mmcblk0"};
const char *fs[] = {"vfat", "exfat"};
sysfs_set_string("/sys/class/android_usb/android0/f_mass_storage/lun/file", "");
for (int i=0; i<2; i++)
{
for (int j=0; j<2; j++)
{
int rval = mount(dev[i], PIVOT_ROOT, fs[j], 0, NULL);
if (rval == 0 || errno == -EBUSY)
{
return 1;
}
}
}
return 0;
}
/* This is called by usb thread after all threads ACKs usb inserted message
*
* returns the # of successful unmounts
*/
int disk_unmount_all(void)
{
if (umount("/mnt/sd_0") == 0)
{
sysfs_set_string("/sys/class/android_usb/android0/f_mass_storage/lun/file", "/dev/mmcblk0");
return 1;
}
return 0;
}
void usb_init_device(void)
{
char functions[32] = {0};
/* Check if ADB was activated in bootloader */
sysfs_get_string("/sys/class/android_usb/android0/functions", functions, sizeof(functions));
adb_mode = (strstr(functions, "adb") == NULL) ? false : true;
usb_enable(false);
if (adb_mode)
{
sysfs_set_string("/sys/class/android_usb/android0/functions", "mass_storage,adb");
sysfs_set_string("/sys/class/android_usb/android0/idVendor", "18D1");
sysfs_set_string("/sys/class/android_usb/android0/idProduct", "D002");
}
else
{
sysfs_set_string("/sys/class/android_usb/android0/functions", "mass_storage");
sysfs_set_string("/sys/class/android_usb/android0/idVendor", "C502");
sysfs_set_string("/sys/class/android_usb/android0/idProduct", "0029");
}
sysfs_set_string("/sys/class/android_usb/android0/iManufacturer", "Rockbox.org");
sysfs_set_string("/sys/class/android_usb/android0/iProduct", "Rockbox media player");
sysfs_set_string("/sys/class/android_usb/android0/iSerial", "0123456789ABCDEF");
sysfs_set_string("/sys/class/android_usb/android0/f_mass_storage/inquiry_string", "Rockbox 0100");
}
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