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/*
* (C) Copyright 2020 Hardkernel Co., Ltd
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <asm/gpio.h>
#include <power/fuel_gauge.h>
#define MIN_VOL_LEVEL 3500 /* 3.5V */
#define PWR_LED_GPIO 18 /* GPIO0_C2 */
#define DC_DET_GPIO 11 /* GPIO0_B3 */
#define CHG_LED_GPIO 13 /* GPIO0_B5 */
void board_chg_led(void)
{
gpio_request(CHG_LED_GPIO, "chg_led");
/* default on */
gpio_direction_output(CHG_LED_GPIO, 1);
gpio_free(CHG_LED_GPIO);
}
void board_pwr_led(bool on)
{
gpio_request(PWR_LED_GPIO, "pwr_led");
gpio_direction_output(PWR_LED_GPIO, on);
gpio_free(PWR_LED_GPIO);
}
int odroid_check_dcjack(void)
{
gpio_request(DC_DET_GPIO, "dc_det_gpio");
if (gpio_get_value(DC_DET_GPIO)) {
debug("dc jack is connected\n");
board_pwr_led(1);
return 1;
} else {
debug("dc jack is NOT connected\n");
board_pwr_led(0);
return 0;
}
}
int odroid_check_battery(int *battery)
{
int ret;
struct udevice *fg;
ret = uclass_get_device(UCLASS_FG, 0, &fg);
if (ret) {
if (ret == -ENODEV)
debug("Can't find FG\n");
else
debug("Get UCLASS FG failed: %d\n", ret);
return ret;
}
*battery = fuel_gauge_get_voltage(fg);
debug("BATTERY %d\n", *battery);
return *battery < MIN_VOL_LEVEL ? 0 : 1;
}
int board_check_power(void)
{
int battery = 0;
int dcpower = 0;
char str[32];
board_chg_led();
dcpower = odroid_check_dcjack();
if (odroid_check_battery(&battery) || dcpower)
return 0;
debug("low battery (%d) without dc jack connected\n", battery);
sprintf(str, "voltage level : %d.%dV", (battery / 1000), (battery % 1000));
printf("%s - Low Battery!\n", __func__);
/* odroid_wait_pwrkey(); */
return -1;
}
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