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power: supply: qcom_battmgr: Add resistance power supply property

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Add power supply property to get battery internal resistance from
the battery management firmware.

Signed-off-by: Fenglin Wu <fenglin.wu@oss.qualcomm.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Fenglin Wu
2025-09-17 18:15:16 +08:00
committed by Sebastian Reichel
parent cd93fbdce5
commit 45e57e6a21
1 changed files with 10 additions and 0 deletions
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10
drivers/power/supply/qcom_battmgr.c
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@@ -2,6 +2,7 @@
/*
* Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2022, Linaro Ltd
* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
*/
#include <linux/auxiliary_bus.h>
#include <linux/module.h>
@@ -254,6 +255,7 @@ struct qcom_battmgr_status {
unsigned int voltage_now;
unsigned int voltage_ocv;
unsigned int temperature;
unsigned int resistance;
unsigned int discharge_time;
unsigned int charge_time;
@@ -418,6 +420,7 @@ static const u8 sm8350_bat_prop_map[] = {
[POWER_SUPPLY_PROP_MODEL_NAME] = BATT_MODEL_NAME,
[POWER_SUPPLY_PROP_TIME_TO_FULL_AVG] = BATT_TTF_AVG,
[POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG] = BATT_TTE_AVG,
[POWER_SUPPLY_PROP_INTERNAL_RESISTANCE] = BATT_RESISTANCE,
[POWER_SUPPLY_PROP_POWER_NOW] = BATT_POWER_NOW,
};
@@ -584,6 +587,9 @@ static int qcom_battmgr_bat_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_TEMP:
val->intval = battmgr->status.temperature;
break;
case POWER_SUPPLY_PROP_INTERNAL_RESISTANCE:
val->intval = battmgr->status.resistance;
break;
case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
val->intval = battmgr->status.discharge_time;
break;
@@ -668,6 +674,7 @@ static const enum power_supply_property sm8350_bat_props[] = {
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
POWER_SUPPLY_PROP_INTERNAL_RESISTANCE,
POWER_SUPPLY_PROP_POWER_NOW,
};
@@ -1200,6 +1207,9 @@ static void qcom_battmgr_sm8350_callback(struct qcom_battmgr *battmgr,
case BATT_TTE_AVG:
battmgr->status.discharge_time = le32_to_cpu(resp->intval.value);
break;
case BATT_RESISTANCE:
battmgr->status.resistance = le32_to_cpu(resp->intval.value);
break;
case BATT_POWER_NOW:
battmgr->status.power_now = le32_to_cpu(resp->intval.value);
break;