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/* Copyright 2018 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.
*
* Battery pack vendor provided charging profile
*/
#include "battery.h"
#include "charge_state.h"
#include "charger_mt6370.h"
#include "console.h"
#include "driver/tcpm/mt6370.h"
#include "ec_commands.h"
#include "util.h"
#define TEMP_OUT_OF_RANGE TEMP_ZONE_COUNT
#define BATT_ID 0
#define BATTERY_SCUD_CHARGE_MIN_TEMP 0
#define BATTERY_SCUD_CHARGE_MAX_TEMP 50
#define BAT_LEVEL_PD_LIMIT 85
#define CPRINTS(format, args...) cprints(CC_CHARGER, format, ## args)
enum battery_type {
BATTERY_SCUD = 0,
BATTERY_COUNT
};
static const struct battery_info info[] = {
[BATTERY_SCUD] = {
.voltage_max = 4400,
.voltage_normal = 3850,
.voltage_min = 3000,
.precharge_voltage = 3400,
.precharge_current = 256,
.start_charging_min_c = 0,
.start_charging_max_c = 45,
.charging_min_c = 0,
.charging_max_c = 50,
.discharging_min_c = -20,
.discharging_max_c = 59,
},
};
const struct battery_info *battery_get_info(void)
{
return &info[BATT_ID];
}
enum battery_disconnect_state battery_get_disconnect_state(void)
{
if (battery_is_present() == BP_YES)
return BATTERY_NOT_DISCONNECTED;
return BATTERY_DISCONNECTED;
}
int charger_profile_override(struct charge_state_data *curr)
{
/* battery temp in 0.1 deg C */
int bat_temp_c = curr->batt.temperature - 2731;
/*
* Keep track of battery temperature range:
*
* ZONE_0 ZONE_1 ZONE_2
* -----+--------+--------+------------+----- Temperature (C)
* t0 t1 t2 t3
*/
enum {
TEMP_ZONE_0, /* t0 < bat_temp_c <= t1 */
TEMP_ZONE_1, /* t1 < bat_temp_c <= t2 */
TEMP_ZONE_2, /* t2 < bat_temp_c <= t3 */
TEMP_ZONE_COUNT
} temp_zone;
static struct {
int temp_min; /* 0.1 deg C */
int temp_max; /* 0.1 deg C */
int desired_current; /* mA */
int desired_voltage; /* mV */
} temp_zones[BATTERY_COUNT][TEMP_ZONE_COUNT] = {
[BATTERY_SCUD] = {
/* TEMP_ZONE_0 */
{BATTERY_SCUD_CHARGE_MIN_TEMP * 10, 150, 1400, 4400},
/* TEMP_ZONE_1 */
{150, 450, 3500, 4400},
/* TEMP_ZONE_2 */
{450, BATTERY_SCUD_CHARGE_MAX_TEMP * 10, 3500, 4200},
},
};
BUILD_ASSERT(ARRAY_SIZE(temp_zones[0]) == TEMP_ZONE_COUNT);
BUILD_ASSERT(ARRAY_SIZE(temp_zones) == BATTERY_COUNT);
if ((curr->batt.flags & BATT_FLAG_BAD_TEMPERATURE) ||
(bat_temp_c < temp_zones[BATT_ID][0].temp_min) ||
(bat_temp_c >= temp_zones[BATT_ID][TEMP_ZONE_COUNT - 1].temp_max))
temp_zone = TEMP_OUT_OF_RANGE;
else {
for (temp_zone = 0; temp_zone < TEMP_ZONE_COUNT; temp_zone++) {
if (bat_temp_c <
temp_zones[BATT_ID][temp_zone].temp_max)
break;
}
}
switch (temp_zone) {
case TEMP_ZONE_0:
case TEMP_ZONE_1:
case TEMP_ZONE_2:
curr->requested_current =
temp_zones[BATT_ID][temp_zone].desired_current;
curr->requested_voltage =
temp_zones[BATT_ID][temp_zone].desired_voltage;
break;
case TEMP_OUT_OF_RANGE:
curr->requested_current = curr->requested_voltage = 0;
curr->batt.flags &= ~BATT_FLAG_WANT_CHARGE;
curr->state = ST_IDLE;
break;
}
#ifdef VARIANT_KUKUI_CHARGER_MT6370
mt6370_charger_profile_override(curr);
#endif /* CONFIG_CHARGER_MT6370 */
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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