コード例 #1
0
static void mtk_ta_vchr_select(int i,int ta_v_chr_candidate[], int ta_charging_current_candidate[], int *max_charging_current, int *max_charging_current_i)
{
 	int current_vchr;
	kal_bool retransmit = KAL_TRUE;
	kal_uint32 retransmit_count=0;

	current_vchr = battery_meter_get_charger_voltage();
	if(ta_current_level != 5000 && current_vchr >= 4900) {	/* pattern error before, so reset vchr to 5V */
		battery_log(BAT_LOG_CRTI, "mtk_ta_vchr_select() : curr_VChr=%d, ta_current_level=%d\n",current_vchr,ta_current_level);

		mtk_ta_reset_vchr();
	}

	do {
		mtk_tuning_voltage(ta_current_level, ta_v_chr_candidate[i]);

		current_vchr = battery_meter_get_charger_voltage();
		if((abs(current_vchr - ta_current_level) > 300) && (ta_cable_out_occur == KAL_FALSE)) {		/* variation > 0.3V, error occur */
			retransmit_count++;
		
			battery_log(BAT_LOG_CRTI, "mtk_ta_vchr_select(): retransmit_count =%d, cur_chr=%d, ta_current_level=%d\n", 
				retransmit_count, current_vchr, ta_current_level);
			
			mtk_ta_reset_vchr(); 
		} else {
			retransmit = KAL_FALSE;
		}

		if((retransmit_count == 2) || (ta_cable_out_occur == KAL_TRUE)) {
			retransmit = KAL_FALSE;
		}

	} while((retransmit == KAL_TRUE) && (ta_cable_out_occur == KAL_FALSE));		

	battery_charging_control(CHARGING_CMD_SET_CURRENT,&ta_charging_current);	//1.5A

	battery_log(BAT_LOG_CRTI, "mtk_ta_vchr_select() : use 1.5A for select max current\n");
	msleep(900); // over 800ms to avoid interference pattern
	 
	ta_charging_current_candidate[i] = battery_meter_get_charging_current_imm();

	/* we hope to choose the less VChr if the current difference between 2 step is not large, so we add weighting for different VChr step */
	if(i == 1)
		ta_charging_current_candidate[i] += 100;	// weighting, plus 120mA for Vbat+0.4V
	else if(i == 2)
		ta_charging_current_candidate[i] += 50;	// weighting, plug 60mA for Vbat+0.6V

	if(ta_charging_current_candidate[i] > *max_charging_current) {
		*max_charging_current = ta_charging_current_candidate[i];
		*max_charging_current_i = i;
	}
}
コード例 #2
0
ファイル: switch_charging.c プロジェクト: djun/m463
static void battery_pump_express_charger_check(void)
{
	if (KAL_TRUE == ta_check_chr_type &&
	  STANDARD_CHARGER == BMT_status.charger_type &&
	  BMT_status.SOC >= TA_START_BATTERY_SOC &&
	  BMT_status.SOC < TA_STOP_BATTERY_SOC)
	{
		mutex_lock(&ta_mutex);
		wake_lock(&TA_charger_suspend_lock);

		mtk_ta_reset_vchr();

		mtk_ta_init();
		mtk_ta_detector();

		/* need to re-check if the charger plug out during ta detector */
		if(KAL_TRUE == ta_cable_out_occur)
			ta_check_chr_type = KAL_TRUE;
		else
			ta_check_chr_type = KAL_FALSE;

		wake_unlock(&TA_charger_suspend_lock);
		mutex_unlock(&ta_mutex);
	}
	else
	{
		battery_xlog_printk(BAT_LOG_CRTI,
		"Stop battery_pump_express_charger_check, SOC=%d, ta_check_chr_type = %d, charger_type = %d \n",
		BMT_status.SOC, ta_check_chr_type, BMT_status.charger_type);
	}
}
コード例 #3
0
ファイル: switch_charging.c プロジェクト: djun/m463
static void battery_pump_express_algorithm_start(void)
{
	kal_int32 charger_vol;
	kal_uint32 charging_enable = KAL_FALSE;

	mutex_lock(&ta_mutex);
	wake_lock(&TA_charger_suspend_lock);

	if(KAL_TRUE == is_ta_connect)
	{
		/* check cable impedance */
		charger_vol = battery_meter_get_charger_voltage();
		if(KAL_FALSE == ta_vchr_tuning)
		{
			mtk_ta_retry_increase();	//increase TA voltage to 9V
			charger_vol = battery_meter_get_charger_voltage();
			ta_vchr_tuning = KAL_TRUE;
		}
		else if(BMT_status.SOC > TA_STOP_BATTERY_SOC)
		{
			//disable charging, avoid Iterm issue
			battery_charging_control(CHARGING_CMD_ENABLE,&charging_enable);
			mtk_ta_reset_vchr();	//decrease TA voltage to 5V
			charger_vol = battery_meter_get_charger_voltage();
			if(abs(charger_vol - ta_v_chr_org) <= 1000)	// 1.0V
				is_ta_connect = KAL_FALSE;

			battery_xlog_printk(BAT_LOG_CRTI, "Stop battery_pump_express_algorithm, SOC=%d is_ta_connect =%d, TA_STOP_BATTERY_SOC: %d\n",
				BMT_status.SOC, is_ta_connect, TA_STOP_BATTERY_SOC);
		}
		battery_xlog_printk(BAT_LOG_CRTI, "[BATTERY] check cable impedance, VA(%d) VB(%d) delta(%d).\n",
		ta_v_chr_org, charger_vol, charger_vol - ta_v_chr_org);

		battery_xlog_printk(BAT_LOG_CRTI, "mtk_ta_algorithm() end\n");
	}
	else
	{
		battery_xlog_printk(BAT_LOG_CRTI, "It's not a TA charger, bypass TA algorithm\n");
	}

	wake_unlock(&TA_charger_suspend_lock);
	mutex_unlock(&ta_mutex);
}
static void mtk_ta_detector(void)
{
	int real_v_chrA;
	int real_v_chrB;
	kal_bool retransmit = KAL_TRUE;
	kal_uint32 retransmit_count=0;
    U32 charging_enable = true;
 
	battery_log(BAT_LOG_CRTI, "mtk_ta_detector() start\n");

    battery_charging_control(CHARGING_CMD_ENABLE,&charging_enable);

	do {
		real_v_chrA = ta_get_charger_voltage();
		mtk_ta_decrease(); 		
		mtk_ta_decrease(); 		
		real_v_chrB = ta_get_charger_voltage();

		if(real_v_chrA - real_v_chrB >= 300) {	/* 0.3V */
			retransmit = KAL_FALSE;
			is_ta_connect = KAL_TRUE;
		 } else {
			retransmit_count++;	
			
			battery_log(BAT_LOG_CRTI, "mtk_ta_detector(): retransmit_count =%d, chrA=%d, chrB=%d\n", 
				retransmit_count, real_v_chrA, real_v_chrB);

			mtk_ta_reset_vchr();
		}	

		if((retransmit_count == 3) || (BMT_status.charger_exist == KAL_FALSE)) {
			retransmit = KAL_FALSE;
			is_ta_connect = KAL_FALSE;
		}
		 
	} while((retransmit == KAL_TRUE) && (ta_cable_out_occur == KAL_FALSE));	 
 

	battery_log(BAT_LOG_CRTI, "mtk_ta_detector() ta_current_level=%d, real_v_chrA=%d, real_v_chrB=%d, is_ta_connect=%d\n", 
		ta_current_level, real_v_chrA, real_v_chrB,is_ta_connect);

	battery_log(BAT_LOG_CRTI, "mtk_ta_detector() end, retry_count=%d, ta_cable_out_occur=%d \n",retransmit_count,ta_cable_out_occur);
}
コード例 #5
0
static void battery_pump_express_charger_check(void)
{
	if (ta_check_chr_type == KAL_TRUE && BMT_status.charger_type == STANDARD_CHARGER) {
		mutex_lock(&ta_mutex);
		wake_lock(&TA_charger_suspend_lock);
		
		mtk_ta_reset_vchr();
		mtk_ta_init();
		mtk_ta_detector();

		first_vchr_det = KAL_TRUE;

		if(ta_cable_out_occur == KAL_FALSE) {
			ta_check_chr_type = KAL_FALSE;
		} else {
			/* need to re-check if the charger plug out during ta detector */
			ta_check_chr_type = KAL_TRUE;
		}

		wake_unlock(&TA_charger_suspend_lock);
		mutex_unlock(&ta_mutex);
 	}

}