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/* Copyright 2020 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_fuel_gauge.h"
#include "battery_smart.h"
#include "charge_state.h"
#include "common.h"
#include "temp_sensor.h"
#include "thermal.h"
#include "util.h"
/*
* Battery info for all Zork battery types. Note that the fields
* start_charging_min/max and charging_min/max are not used for the charger.
* The effective temperature limits are given by discharging_min/max_c.
*
* Fuel Gauge (FG) parameters which are used for determining if the battery
* is connected, the appropriate ship mode (battery cutoff) command, and the
* charge/discharge FETs status.
*
* Ship mode (battery cutoff) requires 2 writes to the appropriate smart battery
* register. For some batteries, the charge/discharge FET bits are set when
* charging/discharging is active, in other types, these bits set mean that
* charging/discharging is disabled. Therefore, in addition to the mask for
* these bits, a disconnect value must be specified. Note that for TI fuel
* gauge, the charge/discharge FET status is found in Operation Status (0x54),
* but a read of Manufacturer Access (0x00) will return the lower 16 bits of
* Operation status which contains the FET status bits.
*
* The assumption for battery types supported is that the charge/discharge FET
* status can be read with a sb_read() command and therefore, only the register
* address, mask, and disconnect value need to be provided.
*/
const struct board_batt_params board_battery_info[] = {
/* SMP L19M3PG1 */
[BATTERY_SMP] = {
.fuel_gauge = {
.manuf_name = "SMP",
.device_name = "L19M3PG1",
.ship_mode = {
.reg_addr = 0x34,
.reg_data = { 0x0000, 0x1000 },
},
.fet = {
.reg_addr = 0x34,
.reg_mask = 0x0100,
.disconnect_val = 0x0100,
}
},
.batt_info = {
.voltage_max = 13200, /* mV */
.voltage_normal = 11520, /* mV */
.voltage_min = 9000, /* mV */
.precharge_current = 200, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 60,
.charging_min_c = 0,
.charging_max_c = 50,
.discharging_min_c = -20,
.discharging_max_c = 73,
},
},
/* SMP L20M3PG1 57W
* Gauge IC: TI BQ40Z696A
*/
[BATTERY_SMP_1] = {
.fuel_gauge = {
.manuf_name = "SMP",
.device_name = "L20M3PG1",
.ship_mode = {
.reg_addr = 0x00,
.reg_data = { 0x0010, 0x0010 },
},
.fet = {
.mfgacc_support = 1,
.reg_addr = 0x0000,
.reg_mask = 0x6000,
.disconnect_val = 0x6000,
}
},
.batt_info = {
.voltage_max = 13200, /* mV */
.voltage_normal = 11520, /* mV */
.voltage_min = 9000, /* mV */
.precharge_current = 247, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 50,
.charging_min_c = 0,
.charging_max_c = 60,
.discharging_min_c = -20,
.discharging_max_c = 70,
},
},
/* SMP L20M3PG0 47W
* Gauge IC: TI BQ40Z696A
*/
[BATTERY_SMP_2] = {
.fuel_gauge = {
.manuf_name = "SMP",
.device_name = "L20M3PG0",
.ship_mode = {
.reg_addr = 0x00,
.reg_data = { 0x0010, 0x0010 },
},
.fet = {
.mfgacc_support = 1,
.reg_addr = 0x0000,
.reg_mask = 0x6000,
.disconnect_val = 0x6000,
}
},
.batt_info = {
.voltage_max = 13200, /* mV */
.voltage_normal = 11520, /* mV */
.voltage_min = 9000, /* mV */
.precharge_current = 256, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 50,
.charging_min_c = 0,
.charging_max_c = 60,
.discharging_min_c = -20,
.discharging_max_c = 70,
},
},
/* SMP L20M3PG3 47W
* Gauge IC: Renesas RAJ240047
*/
[BATTERY_SMP_3] = {
.fuel_gauge = {
.manuf_name = "SMP",
.device_name = "L20M3PG3",
.ship_mode = {
.reg_addr = 0x34,
.reg_data = { 0x0000, 0x1000 },
},
.fet = {
.reg_addr = 0x0,
.reg_mask = 0x0010,
.disconnect_val = 0x0,
},
},
.batt_info = {
.voltage_max = 13200, /* mV */
.voltage_normal = 11520, /* mV */
.voltage_min = 9000, /* mV */
.precharge_current = 256, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 50,
.charging_min_c = 0,
.charging_max_c = 60,
.discharging_min_c = -20,
.discharging_max_c = 70,
},
},
/* LGC L19L3PG1 */
[BATTERY_LGC] = {
.fuel_gauge = {
.manuf_name = "LGC",
.device_name = "L19L3PG1",
.ship_mode = {
.reg_addr = 0x34,
.reg_data = { 0x0000, 0x1000 },
},
.fet = {
.reg_addr = 0x34,
.reg_mask = 0x0100,
.disconnect_val = 0x0100,
}
},
.batt_info = {
.voltage_max = 13200, /* mV */
.voltage_normal = 11550, /* mV */
.voltage_min = 9000, /* mV */
.precharge_current = 200, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 60,
.charging_min_c = 0,
.charging_max_c = 50,
.discharging_min_c = -20,
.discharging_max_c = 73,
},
},
/* LGC L20L3PG1 57W
* Gauge IC: Renesas
*/
[BATTERY_LGC_1] = {
.fuel_gauge = {
.manuf_name = "LGC",
.device_name = "L20L3PG1",
.ship_mode = {
.reg_addr = 0x34,
.reg_data = { 0x0000, 0x1000 },
},
.fet = {
.reg_addr = 0x0,
.reg_mask = 0x0010,
.disconnect_val = 0x0,
},
},
.batt_info = {
.voltage_max = 13200, /* mV */
.voltage_normal = 11580, /* mV */
.voltage_min = 9000, /* mV */
.precharge_current = 256, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 50,
.charging_min_c = 0,
.charging_max_c = 60,
.discharging_min_c = -20,
.discharging_max_c = 70,
},
},
/* LGC L20L3PG0 47W
* Gauge IC: Renesas
*/
[BATTERY_LGC_2] = {
.fuel_gauge = {
.manuf_name = "LGC",
.device_name = "L20L3PG0",
.ship_mode = {
.reg_addr = 0x34,
.reg_data = { 0x0000, 0x1000 },
},
.fet = {
.reg_addr = 0x0,
.reg_mask = 0x0010,
.disconnect_val = 0x0,
},
},
.batt_info = {
.voltage_max = 13200, /* mV */
.voltage_normal = 11580, /* mV */
.voltage_min = 9000, /* mV */
.precharge_current = 256, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 50,
.charging_min_c = 0,
.charging_max_c = 60,
.discharging_min_c = -20,
.discharging_max_c = 70,
},
},
/* Celxpert L19C3PG1 */
[BATTERY_CEL] = {
.fuel_gauge = {
.manuf_name = "Celxpert",
.device_name = "L19C3PG1",
.ship_mode = {
.reg_addr = 0x34,
.reg_data = { 0x0000, 0x1000 },
},
.fet = {
.reg_addr = 0x34,
.reg_mask = 0x0100,
.disconnect_val = 0x0100,
}
},
.batt_info = {
.voltage_max = 13200, /* mV */
.voltage_normal = 11520, /* mV */
.voltage_min = 9000, /* mV */
.precharge_current = 200, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 60,
.charging_min_c = 0,
.charging_max_c = 50,
.discharging_min_c = -20,
.discharging_max_c = 70,
},
},
/* Celxpert L20C3PG0 57W
* Gauge IC: TI
*/
[BATTERY_CEL_1] = {
.fuel_gauge = {
.manuf_name = "Celxpert",
.device_name = "L20C3PG0",
.ship_mode = {
.reg_addr = 0x00,
.reg_data = { 0x0010, 0x0010 },
},
.fet = {
.mfgacc_support = 1,
.reg_addr = 0x0000,
.reg_mask = 0x6000,
.disconnect_val = 0x6000,
}
},
.batt_info = {
.voltage_max = 13200, /* mV */
.voltage_normal = 11520, /* mV */
.voltage_min = 9000, /* mV */
.precharge_current = 200, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 50,
.charging_min_c = 0,
.charging_max_c = 60,
.discharging_min_c = -20,
.discharging_max_c = 70,
},
},
/* SUNWODA L20D3PG1 57W
* Gauge IC: TI
*/
[BATTERY_SUNWODA] = {
.fuel_gauge = {
.manuf_name = "Sunwoda",
.device_name = "L20D3PG1",
.ship_mode = {
.reg_addr = 0x00,
.reg_data = { 0x0010, 0x0010 },
},
.fet = {
.mfgacc_support = 1,
.reg_addr = 0x0000,
.reg_mask = 0x6000,
.disconnect_val = 0x6000,
}
},
.batt_info = {
.voltage_max = 13200, /* mV */
.voltage_normal = 11520, /* mV */
.voltage_min = 9000, /* mV */
.precharge_current = 250, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 50,
.charging_min_c = 0,
.charging_max_c = 60,
.discharging_min_c = -20,
.discharging_max_c = 70,
},
},
/* SUNWODA L20D3PG0 47W
* Gauge IC: TI
*/
[BATTERY_SUNWODA_1] = {
.fuel_gauge = {
.manuf_name = "Sunwoda",
.device_name = "L20D3PG0",
.ship_mode = {
.reg_addr = 0x00,
.reg_data = { 0x0010, 0x0010 },
},
.fet = {
.mfgacc_support = 1,
.reg_addr = 0x0000,
.reg_mask = 0x6000,
.disconnect_val = 0x6000,
}
},
.batt_info = {
.voltage_max = 13200, /* mV */
.voltage_normal = 11520, /* mV */
.voltage_min = 9000, /* mV */
.precharge_current = 205, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 50,
.charging_min_c = 0,
.charging_max_c = 60,
.discharging_min_c = -20,
.discharging_max_c = 70,
},
},
};
BUILD_ASSERT(ARRAY_SIZE(board_battery_info) == BATTERY_TYPE_COUNT);
const enum battery_type DEFAULT_BATTERY_TYPE = BATTERY_SMP;
struct chg_curr_step {
int on;
int off;
int curr_ma;
};
static const struct chg_curr_step chg_curr_table[] = {
{.on = 0, .off = 35, .curr_ma = 2800},
{.on = 36, .off = 35, .curr_ma = 1500},
{.on = 39, .off = 38, .curr_ma = 1000},
};
/* All charge current tables must have the same number of levels */
#define NUM_CHG_CURRENT_LEVELS ARRAY_SIZE(chg_curr_table)
int charger_profile_override(struct charge_state_data *curr)
{
int rv;
int chg_temp_c;
int current;
int thermal_sensor0;
static int current_level;
static int prev_tmp;
/*
* Precharge must be executed when communication is failed on
* dead battery.
*/
if (!(curr->batt.flags & BATT_FLAG_RESPONSIVE))
return 0;
current = curr->requested_current;
rv = temp_sensor_read(TEMP_SENSOR_CHARGER, &thermal_sensor0);
chg_temp_c = K_TO_C(thermal_sensor0);
if (rv != EC_SUCCESS)
return 0;
if (chipset_in_state(CHIPSET_STATE_ON)) {
if (chg_temp_c < prev_tmp) {
if (chg_temp_c <= chg_curr_table[current_level].off)
current_level = current_level - 1;
} else if (chg_temp_c > prev_tmp) {
if (chg_temp_c >= chg_curr_table[current_level + 1].on)
current_level = current_level + 1;
}
/*
* Prevent level always minus 0 or over table steps.
*/
if (current_level < 0)
current_level = 0;
else if (current_level >= NUM_CHG_CURRENT_LEVELS)
current_level = NUM_CHG_CURRENT_LEVELS - 1;
prev_tmp = chg_temp_c;
current = chg_curr_table[current_level].curr_ma;
curr->requested_current = MIN(curr->requested_current, current);
}
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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