mtk 手机低电无法关机，电池容量一直显示1%

2019-04-14 17:32发布

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mtk 手机低电无法关机，电池容量一直显示1%

[DESCRIPTION] 手机低电无法关机，电池容量一直显示1%，但是kernel log中可以看到soc = 0;vbat 已经小于3.4V。 [SOLUTION] 修改mt_battery_update_EM（）函数： #ifdef CONFIG_MTK_DISABLE_POWER_ON_OFF_VOLTAGE_LIMITATION //if (bat_data->BAT_CAPACITY <= 0) //bat_data->BAT_CAPACITY = 1; //battery_log(BAT_LOG_CRTI, //"BAT_CAPACITY=1, due to define CONFIG_MTK_DISABLE_POWER_ON_OFF_VOLTAGE_LIMITATION "); #endif /* Tracking TIME */ #define ONEHUNDRED_PERCENT_TRACKING_TIME 10 /* 10 second*/ #define NPERCENT_TRACKING_TIME 20 /* 20 second*/ #define SYNC_TO_REAL_TRACKING_TIME 60 /* 60 second*/ #define V_0PERCENT_TRACKING 3400 /*3400mV*/ int __batt_init_cust_data_from_cust_header(void) { #if defined(V_0PERCENT_TRACKING) //#define V_0PERCENT_TRACKING 3400 /*3400mV*/ batt_cust_data.v_0percent_tracking = V_0PERCENT_TRACKING; #endif } static int battery_probe(struct platform_device *dev) | kthread_run(bat_thread_kthread, NULL, "bat_thread_kthread"); int bat_thread_kthread(void *x) | BAT_thread(); void BAT_thread(void) | mt_battery_update_status(); static void mt_battery_update_status(void) | battery_update(&battery_main); static void battery_update(struct battery_data *bat_data) static void battery_update(struct battery_data *bat_data) { #ifdef SOC_BY_HW_FG if (BMT_status.ZCV <= batt_cust_data.v_0percent_tracking) #else //#define V_0PERCENT_TRACKING 3400 /*3400mV*/ if (BMT_status.bat_vol <= batt_cust_data.v_0percent_tracking) #endif // modifiled end >>>//BMT_status.bat_vol低于3.4v进去判断到达0%检测函数 resetBatteryMeter = mt_battery_0Percent_tracking_check(); static kal_bool mt_battery_0Percent_tracking_check(void) { //#define SYSTEM_OFF_VOLTAGE (3400) if (BMT_status.bat_vol > SYSTEM_OFF_VOLTAGE && BMT_status.UI_SOC > 1) BMT_status.UI_SOC--; else if (BMT_status.bat_vol <= SYSTEM_OFF_VOLTAGE) BMT_status.UI_SOC--; } else resetBatteryMeter = mt_battery_100Percent_tracking_check(); //电池容量一直显示1%，但是kernel log中可以看到soc = 0 mt_battery_update_EM(bat_data); static void mt_battery_update_EM(struct battery_data *bat_data) { #ifdef CONFIG_MTK_DISABLE_POWER_ON_OFF_VOLTAGE_LIMITATION if (bat_data->BAT_CAPACITY <= 0) bat_data->BAT_CAPACITY = 1; battery_log(BAT_LOG_CRTI, "BAT_CAPACITY=1, due to define CONFIG_MTK_DISABLE_POWER_ON_OFF_VOLTAGE_LIMITATION "); #endif } }

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