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/* Copyright 2019 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.
*/
#include "battery.h"
#include "battery_fuel_gauge.h"
#include "charge_state.h"
#include "charger_mt6370.h"
#include "console.h"
#include "driver/charger/rt946x.h"
#include "gpio.h"
#include "power.h"
#include "usb_pd.h"
#include "util.h"
#define CPRINTS(format, args...) cprints(CC_CHARGER, format, ## args)
const struct board_batt_params board_battery_info[] = {
[BATTERY_SIMPLO] = {
.fuel_gauge = {
.manuf_name = "SMP",
.device_name = "L19M3PG0",
.ship_mode = {
.reg_addr = 0x34,
.reg_data = { 0x0000, 0x1000 },
},
.fet = {
.reg_addr = 0x34,
.reg_mask = 0x0100,
.disconnect_val = 0x0100,
}
},
.batt_info = {
.voltage_max = 4400,
.voltage_normal = 3840,
.voltage_min = 3000,
.precharge_current = 256,
.start_charging_min_c = 0,
.start_charging_max_c = 45,
.charging_min_c = 0,
.charging_max_c = 60,
.discharging_min_c = -20,
.discharging_max_c = 60,
},
},
[BATTERY_CELXPERT] = {
.fuel_gauge = {
.manuf_name = "Celxpert",
.device_name = "L19C3PG0",
.ship_mode = {
.reg_addr = 0x34,
.reg_data = { 0x0000, 0x1000 },
},
.fet = {
.reg_addr = 0x34,
.reg_mask = 0x0100,
.disconnect_val = 0x0100,
}
},
.batt_info = {
.voltage_max = 4400,
.voltage_normal = 3840,
.voltage_min = 2800,
.precharge_current = 404,
.start_charging_min_c = 0,
.start_charging_max_c = 45,
.charging_min_c = 0,
.charging_max_c = 60,
.discharging_min_c = -20,
.discharging_max_c = 60,
},
},
};
BUILD_ASSERT(ARRAY_SIZE(board_battery_info) == BATTERY_TYPE_COUNT);
const enum battery_type DEFAULT_BATTERY_TYPE = BATTERY_SIMPLO;
enum battery_present battery_hw_present(void)
{
return gpio_get_level(GPIO_EC_BATT_PRES_ODL) ? BP_NO : BP_YES;
}
int charger_profile_override(struct charge_state_data *curr)
{
const struct battery_info *batt_info = battery_get_info();
static int normal_charge_lock, over_discharge_lock;
/* battery temp in 0.1 deg C */
int bat_temp_c = curr->batt.temperature - 2731;
/*
* SMP battery uses HW pre-charge circuit and pre-charge current is
* limited to ~50mA. Once the charge current is lower than IEOC level
* within CHG_TEDG_EOC, and TE is enabled, the charging power path will
* be turned off. Disable EOC and TE when battery stays over discharge
* state, otherwise enable EOC and TE.
*/
if (curr->batt.voltage < batt_info->voltage_min) {
normal_charge_lock = 0;
if (!over_discharge_lock && curr->state == ST_CHARGE) {
over_discharge_lock = 1;
rt946x_enable_charge_eoc(0);
rt946x_enable_charge_termination(0);
}
} else {
over_discharge_lock = 0;
if (!normal_charge_lock) {
normal_charge_lock = 1;
rt946x_enable_charge_eoc(1);
rt946x_enable_charge_termination(1);
}
}
/*
* When smart battery temperature is more than 45 deg C, the max
* charging voltage is 4100mV.
*/
if (curr->state == ST_CHARGE && bat_temp_c >= 450)
curr->requested_voltage = 4100;
#ifdef VARIANT_KUKUI_CHARGER_MT6370
mt6370_charger_profile_override(curr);
#endif /* CONFIG_CHARGER_MT6370 */
if (IS_ENABLED(CONFIG_CHARGER_MAINTAIN_VBAT)) {
/* Turn charger off if it's not needed */
if (curr->state == ST_IDLE || curr->state == ST_DISCHARGE) {
curr->requested_voltage = 0;
curr->requested_current = 0;
}
if (!curr->batt.is_present &&
curr->requested_voltage == 0 &&
curr->requested_current == 0) {
/*
* b/138978212: With adapter plugged in S0, the system
* will set charging current and voltage as 0V/0A once
* removing battery. Vsys drop to lower voltage
* (Vsys < 2.5V) since Vsys's loading, then system will
* shutdown. Keep max charging voltage as 4.4V when
* remove battery in S0 to not let the system to trigger
* under voltage (Vsys < 2.5V).
*/
CPRINTS("battery disconnected");
curr->requested_voltage = batt_info->voltage_max;
curr->requested_current = 500;
}
}
return 0;
}
enum ec_status charger_profile_override_get_param(uint32_t param,
uint32_t *value)
{
return EC_RES_INVALID_PARAM;
}
enum ec_status charger_profile_override_set_param(uint32_t param,
uint32_t value)
{
return EC_RES_INVALID_PARAM;
}
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