rockbox/firmware/target/hosted/fiio/power-fiio.c

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2017 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 <sys/types.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include "system.h"
#include "power.h"
#include "panic.h"
#include "sysfs.h"
#include "usb.h"
#include "power-fiio.h"
const char * const sysfs_bat_voltage =
"/sys/class/power_supply/battery/voltage_now";
const char * const sysfs_bat_capacity =
"/sys/class/power_supply/battery/capacity";
const char * const sysfs_bat_status =
"/sys/class/power_supply/battery/status";
const char * const sysfs_pow_supply =
"/sys/class/power_supply/ac/online";
unsigned int fiio_power_input_status(void)
{
int present = 0;
sysfs_get_int(sysfs_pow_supply, &present);
usb_enable(present ? true : false);
return present ? POWER_INPUT_USB_CHARGER : POWER_INPUT_NONE;
}
bool fiio_power_charging_status(void)
{
char buf[12] = {0};
sysfs_get_string(sysfs_bat_status, buf, sizeof(buf));
return (strncmp(buf, "Charging", 8) == 0);
}
unsigned int fiio_power_get_battery_voltage(void)
{
int battery_voltage;
sysfs_get_int(sysfs_bat_voltage, &battery_voltage);
return battery_voltage;
}
unsigned int fiio_power_get_battery_capacity(void)
{
int battery_capacity;
sysfs_get_int(sysfs_bat_capacity, &battery_capacity);
return battery_capacity * 20;
}