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/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Common API for battery pack vendor provided charging profile
*/
#ifndef __CROS_EC_BATTERY_PACK_H
#define __CROS_EC_BATTERY_PACK_H
#include "common.h"
#define CELSIUS_TO_DECI_KELVIN(temp_c) ((temp_c) * 10 + 2731)
#define DECI_KELVIN_TO_CELSIUS(temp_dk) ((temp_dk - 2731) / 10)
/* Battery parameters */
struct batt_params {
int temperature; /* Temperature in 0.1 K */
int state_of_charge; /* State of charge (percent, 0-100) */
int voltage; /* Battery voltage (mV) */
int current; /* Battery current (mA) */
int desired_voltage; /* Charging voltage desired by battery (mV) */
int desired_current; /* Charging current desired by battery (mA) */
};
/* Working temperature ranges in degrees C */
struct battery_temperature_ranges {
int8_t start_charging_min_c;
int8_t start_charging_max_c;
int8_t charging_min_c;
int8_t charging_max_c;
int8_t discharging_min_c;
int8_t discharging_max_c;
};
extern const struct battery_temperature_ranges bat_temp_ranges;
/* Battery constants */
struct battery_info {
/* Design voltage in mV */
int voltage_max;
int voltage_normal;
int voltage_min;
/* Pre-charge current in mA */
int precharge_current;
};
/**
* Return vendor-provided battery constants.
*/
const struct battery_info *battery_get_info(void);
/**
* Modify battery parameters to match vendor charging profile.
*
* @param batt Battery parameters to modify
*/
void battery_vendor_params(struct batt_params *batt);
#ifdef CONFIG_BATTERY_CHECK_CONNECTED
/**
* Attempt communication with the battery.
*
* @return non-zero if the battery responds.
*/
int battery_is_connected(void);
#endif /* CONFIG_BATTERY_CHECK_CONNECTED */
#endif /* __CROS_EC_BATTERY_PACK_H */
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