mirror of
https://github.com/Rockbox/rockbox.git
synced 2025-12-06 21:25:03 -05:00
806b71b2ed
Several hosted targets read their battery state from a fixed sysfs path. Get rid of the duplicated code by handling this common case in power-linux.c. Some targets use non-standard units in sysfs instead of the typical microvolts / microamps, so allow the scale factors to be overridden by the target. Change-Id: I31dc4ffc7a2d2c066d00a74070f9f9849c1663d0
131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
*
|
|
* Copyright (C) 2021 by Solomon Peachy
|
|
*
|
|
* 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 "tick.h"
|
|
#ifdef FIIO_M3K_LINUX
|
|
#include "usb.h"
|
|
#endif
|
|
|
|
#ifdef BATTERY_DEV_NAME
|
|
# define BATTERY_SYSFS_PATH "/sys/class/power_supply/" BATTERY_DEV_NAME
|
|
# define BATTERY_STATUS_PATH BATTERY_SYSFS_PATH "/status"
|
|
# define BATTERY_VOLTAGE_PATH BATTERY_SYSFS_PATH "/voltage_now"
|
|
# define BATTERY_CURRENT_PATH BATTERY_SYSFS_PATH "/current_now"
|
|
# define BATTERY_LEVEL_PATH BATTERY_SYSFS_PATH "/capacity"
|
|
#endif
|
|
|
|
/* Voltage is normally in microvolts */
|
|
#ifndef BATTERY_VOLTAGE_SCALE_MUL
|
|
# define BATTERY_VOLTAGE_SCALE_MUL 1
|
|
#endif
|
|
|
|
#ifndef BATTERY_VOLTAGE_SCALE_DIV
|
|
# define BATTERY_VOLTAGE_SCALE_DIV 1000
|
|
#endif
|
|
|
|
/* Current is normally in microamps */
|
|
#ifndef BATTERY_CURRENT_SCALE_MUL
|
|
# define BATTERY_CURRENT_SCALE_MUL 1
|
|
#endif
|
|
|
|
#ifndef BATTERY_CURRENT_SCALE_DIV
|
|
# define BATTERY_CURRENT_SCALE_DIV 1000
|
|
#endif
|
|
|
|
/* Level is normally in whole percentage points (0-100) */
|
|
#ifndef BATTERY_LEVEL_SCALE_MUL
|
|
# define BATTERY_LEVEL_SCALE_MUL 1
|
|
#endif
|
|
|
|
#ifndef BATTERY_LEVEL_SCALE_DIV
|
|
# define BATTERY_LEVEL_SCALE_DIV 1
|
|
#endif
|
|
|
|
#define POWER_STATUS_PATH "/sys/class/power_supply/" POWER_DEV_NAME "/online"
|
|
|
|
#ifdef BATTERY_DEV_NAME
|
|
/* We get called multiple times per tick, let's cut that back! */
|
|
static long last_tick = 0;
|
|
static bool last_power = false;
|
|
|
|
bool charging_state(void)
|
|
{
|
|
if ((current_tick - last_tick) > HZ/2 ) {
|
|
char buf[12] = {0};
|
|
sysfs_get_string(BATTERY_STATUS_PATH, buf, sizeof(buf));
|
|
|
|
last_tick = current_tick;
|
|
last_power = (strncmp(buf, "Charging", 8) == 0);
|
|
}
|
|
return last_power;
|
|
}
|
|
|
|
#if (CONFIG_BATTERY_MEASURE & VOLTAGE_MEASURE)
|
|
int _battery_voltage(void)
|
|
{
|
|
int voltage = 0;
|
|
sysfs_get_int(BATTERY_VOLTAGE_PATH, &voltage);
|
|
|
|
return (voltage * BATTERY_VOLTAGE_SCALE_MUL) / BATTERY_VOLTAGE_SCALE_DIV;
|
|
}
|
|
#endif
|
|
|
|
#if (CONFIG_BATTERY_MEASURE & CURRENT_MEASURE)
|
|
int _battery_current(void)
|
|
{
|
|
int current = 0;
|
|
sysfs_get_int(BATTERY_CURRENT_PATH, ¤t);
|
|
|
|
return (current * BATTERY_CURRENT_SCALE_MUL) / BATTERY_CURRENT_SCALE_DIV;
|
|
}
|
|
#endif
|
|
|
|
#if (CONFIG_BATTERY_MEASURE & PERCENTAGE_MEASURE)
|
|
int _battery_level(void)
|
|
{
|
|
int level = 0;
|
|
sysfs_get_int(BATTERY_LEVEL_PATH, &level);
|
|
|
|
return (level * BATTERY_LEVEL_SCALE_MUL) / BATTERY_LEVEL_SCALE_DIV;
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
unsigned int power_input_status(void)
|
|
{
|
|
int present = 0;
|
|
sysfs_get_int(POWER_STATUS_PATH, &present);
|
|
|
|
#ifdef FIIO_M3K_LINUX
|
|
usb_enable(present ? true : false);
|
|
#endif
|
|
|
|
return present ? POWER_INPUT_USB_CHARGER : POWER_INPUT_NONE;
|
|
}
|