/* 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		= 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,
		},
	},
};
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)
{
#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) {
			const struct battery_info *batt_info =
					battery_get_info();

			/*
			 * 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;
}