diff options
Diffstat (limited to 'board/volmar/battery.c')
| -rw-r--r-- | board/volmar/battery.c | 107 |
1 files changed, 106 insertions, 1 deletions
diff --git a/board/volmar/battery.c b/board/volmar/battery.c index 3832fd8edf..852ed4b137 100644 --- a/board/volmar/battery.c +++ b/board/volmar/battery.c @@ -1,12 +1,16 @@ -/* Copyright 2022 The Chromium OS Authors. All rights reserved. +/* Copyright 2022 The ChromiumOS Authors * 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 "battery_fuel_gauge.h" #include "cbi.h" +#include "charge_ramp.h" +#include "charge_state.h" +#include "charger_profile_override.h" #include "common.h" #include "compile_time_macros.h" #include "gpio.h" @@ -64,6 +68,37 @@ const struct board_batt_params board_battery_info[] = { .discharging_max_c = 75, }, }, + /* COSMX AP20CBL Battery Information (new firmware ver) */ + [BATTERY_COSMX_AP20CBL_004] = { + .fuel_gauge = { + .manuf_name = "COSMX KT0030B004", + .device_name = "AP20CBL", + .ship_mode = { + .reg_addr = 0x3A, + .reg_data = { 0xC574, 0xC574 }, + }, + .fet = { + .mfgacc_support = 1, + .reg_addr = 0x0, + .reg_mask = 0x2000, + .disconnect_val = 0x2000, + .cfet_mask = 0x4000, + .cfet_off_val = 0x4000, + }, + }, + .batt_info = { + .voltage_max = 13200, + .voltage_normal = 11550, + .voltage_min = 9000, + .precharge_current = 256, + .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 = 75, + }, + }, /* LGC AP18C8K Battery Information */ [BATTERY_LGC_AP18C8K] = { .fuel_gauge = { @@ -131,3 +166,73 @@ enum battery_present battery_hw_present(void) /* The GPIO is low when the battery is physically present */ return gpio_get_level(GPIO_EC_BATT_PRES_ODL) ? BP_NO : BP_YES; } + +static int charger_should_discharge_on_ac(struct charge_state_data *curr) +{ + /* can not discharge on AC without battery */ + if (curr->batt.is_present != BP_YES) + return 0; + + /* Do not discharge when battery disconnect */ + if (battery_get_disconnect_state() != BATTERY_NOT_DISCONNECTED) + return 0; + + /* Do not discharge on AC if the battery is still waking up */ + if ((curr->batt.flags & BATT_FLAG_BAD_STATUS) || + (!(curr->batt.flags & BATT_FLAG_WANT_CHARGE) && + !(curr->batt.status & STATUS_FULLY_CHARGED))) + return 0; + + /* + * In heavy load (>3A being withdrawn from VSYS) the DCDC of the + * charger operates on hybrid mode. This causes a slight voltage + * ripple on VSYS that falls in the audible noise frequency (single + * digit kHz range). This small ripple generates audible noise in + * the output ceramic capacitors (caps on VSYS and any input of + * DCDC under VSYS). + * + * To overcome this issue, force battery discharging when battery + * full, So the battery MOS of NVDC charger will turn on always, + * it make the Vsys same as Vbat and the noise has been improved. + */ + if (!battery_is_cut_off() && + !(curr->batt.flags & BATT_FLAG_WANT_CHARGE) && + (curr->batt.status & STATUS_FULLY_CHARGED)) + return 1; + + return 0; +} + +/* + * This can override the smart battery's charging profile. To make a change, + * modify one or more of requested_voltage, requested_current, or state. + * Leave everything else unchanged. + * + * Return the next poll period in usec, or zero to use the default (which is + * state dependent). + */ +int charger_profile_override(struct charge_state_data *curr) +{ + int disch_on_ac = charger_should_discharge_on_ac(curr); + + charger_discharge_on_ac(disch_on_ac); + + if (disch_on_ac) { + curr->state = ST_DISCHARGE; + return 0; + } + + 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; +} |