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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_fuel_gauge.h"
#include "charge_state.h"
#include "chipset.h"
#include "common.h"
#include "hooks.h"
#include "usb_pd.h"
/*
* Battery info for all ampton/apel 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[] = {
[BATTERY_C214] = {
.fuel_gauge = {
.manuf_name = "AS1GUXd3KB",
.device_name = "C214-43",
.ship_mode = {
.reg_addr = 0x0,
.reg_data = { 0x10, 0x10 },
},
.fet = {
.mfgacc_support = 1,
.reg_addr = 0x00,
.reg_mask = 0x2000,
.disconnect_val = 0x2000,
},
},
.batt_info = {
.voltage_max = 13200,
.voltage_normal = 11550,
.voltage_min = 9000,
.precharge_current = 256,
.start_charging_min_c = 0,
.start_charging_max_c = 45,
.charging_min_c = 0,
.discharging_min_c = 0,
.discharging_max_c = 60,
},
},
[BATTERY_C204EE] = {
.fuel_gauge = {
.manuf_name = "AS1GVCD3KB",
.device_name = "C204-35",
.ship_mode = {
.reg_addr = 0x0,
.reg_data = { 0x10, 0x10 },
},
.fet = {
.mfgacc_support = 1,
.reg_addr = 0x00,
.reg_mask = 0x2000,
.disconnect_val = 0x2000,
},
},
.batt_info = {
.voltage_max = 13200,
.voltage_normal = 11550,
.voltage_min = 9000,
.precharge_current = 256,
.start_charging_min_c = 0,
.start_charging_max_c = 45,
.charging_min_c = 0,
.discharging_min_c = 0,
.discharging_max_c = 60,
},
},
[BATTERY_C424] = {
.fuel_gauge = {
.manuf_name = "AS2GVID3jB",
.device_name = "C424-35",
.ship_mode = {
.reg_addr = 0x0,
.reg_data = { 0x10, 0x10 },
},
.fet = {
.mfgacc_support = 1,
.reg_addr = 0x00,
.reg_mask = 0x2000,
.disconnect_val = 0x2000,
},
},
.batt_info = {
.voltage_max = 13200,
.voltage_normal = 11550,
.voltage_min = 9000,
.precharge_current = 256,
.start_charging_min_c = 0,
.start_charging_max_c = 45,
.charging_min_c = 0,
.discharging_min_c = 0,
.discharging_max_c = 60,
},
},
};
BUILD_ASSERT(ARRAY_SIZE(board_battery_info) == BATTERY_TYPE_COUNT);
const enum battery_type DEFAULT_BATTERY_TYPE = BATTERY_C214;
/* Lower our input voltage to 5V in S5/G3 when battery is full. */
static void reduce_input_voltage_when_full(void)
{
int max_pd_voltage_mv;
int port;
if (charge_get_percent() == 100 &&
chipset_in_or_transitioning_to_state(CHIPSET_STATE_ANY_OFF))
max_pd_voltage_mv = 5000;
else
max_pd_voltage_mv = PD_MAX_VOLTAGE_MV;
if (pd_get_max_voltage() != max_pd_voltage_mv) {
for (port = 0; port < CONFIG_USB_PD_PORT_COUNT; port++)
pd_set_external_voltage_limit(port, max_pd_voltage_mv);
}
}
DECLARE_HOOK(HOOK_BATTERY_SOC_CHANGE, reduce_input_voltage_when_full,
HOOK_PRIO_DEFAULT);
DECLARE_HOOK(HOOK_CHIPSET_STARTUP, reduce_input_voltage_when_full,
HOOK_PRIO_DEFAULT);
DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, reduce_input_voltage_when_full,
HOOK_PRIO_DEFAULT);
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