From ef9638196126781a6ba6d6a8d47504b4f326f916 Mon Sep 17 00:00:00 2001
From: huangcm <1263938474@qq.com>
Date: Thu, 17 Jul 2025 05:49:44 +0000
Subject: [PATCH] feat(bat): add pmu_vol_min protect
---
longan/kernel/linux-4.9/drivers/power/supply/axp803_charger.h | 1 +
longan/kernel/linux-4.9/drivers/power/supply/axp803_battery.c | 14 ++++++++++++++
2 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/longan/kernel/linux-4.9/drivers/power/supply/axp803_battery.c b/longan/kernel/linux-4.9/drivers/power/supply/axp803_battery.c
index 5f49c60..ee9024f 100644
--- a/longan/kernel/linux-4.9/drivers/power/supply/axp803_battery.c
+++ b/longan/kernel/linux-4.9/drivers/power/supply/axp803_battery.c
@@ -143,6 +143,9 @@
struct axp_config_info *axp_config = &bat_power->dts_info;
+ regmap_bulk_read(bat_power->regmap, AXP803_OCVBATH_RES, temp_val, 2);
+ ocv_vol = ((temp_val[0] << 4) | (temp_val[1] & 0xF)) * 1100 / 1000;
+
ret = regmap_read(bat_power->regmap, AXP803_CAP, ®_value);
if (ret)
return ret;
@@ -160,6 +163,11 @@
rest_vol = 100;
}
+ if (ocv_vol < axp_config->pmu_vol_min) {
+ pr_err("kickpi: ocv_vol %d < min %d, rest_vol %d -> 0\n", ocv_vol, axp_config->pmu_vol_min, rest_vol);
+ rest_vol = 0;
+ }
+
return rest_vol;
}
@@ -234,6 +242,11 @@
pr_debug("calc_info: ocv_vol:%d rdc:%d coulumb_counter:%d batt_max_cap:%d\n",
ocv_vol, rdc, coulumb_counter, batt_max_cap);
}
+
+ if (ocv_vol < axp_config->pmu_vol_min) {
+ pr_err("kickpi: ocv_vol %d < min %d, rest_vol %d -> 0\n", ocv_vol, axp_config->pmu_vol_min, rest_vol);
+ rest_vol = 0;
+ }
return rest_vol;
}
@@ -917,6 +930,7 @@
AXP_OF_PROP_READ(pmu_runtime_chgcur, INTCHGCUR / 1000);
AXP_OF_PROP_READ(pmu_suspend_chgcur, 1200);
AXP_OF_PROP_READ(pmu_shutdown_chgcur, 1200);
+ AXP_OF_PROP_READ(pmu_vol_min, 3400);
AXP_OF_PROP_READ(pmu_init_chgvol, INTCHGVOL / 1000);
AXP_OF_PROP_READ(pmu_init_chgend_rate, INTCHGENDRATE);
AXP_OF_PROP_READ(pmu_init_chg_enabled, 1);
diff --git a/longan/kernel/linux-4.9/drivers/power/supply/axp803_charger.h b/longan/kernel/linux-4.9/drivers/power/supply/axp803_charger.h
index 66f39f5..83f8606 100644
--- a/longan/kernel/linux-4.9/drivers/power/supply/axp803_charger.h
+++ b/longan/kernel/linux-4.9/drivers/power/supply/axp803_charger.h
@@ -44,6 +44,7 @@
u32 pmu_runtime_chgcur;
u32 pmu_suspend_chgcur;
u32 pmu_shutdown_chgcur;
+ u32 pmu_vol_min;
u32 pmu_init_chgvol;
u32 pmu_init_chgend_rate;
u32 pmu_init_chg_enabled;
--
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