mp2629_read_adc
ret = mp2629_read_adc(charger, MP2629_BATT_VOLT, &vnow);
ret = mp2629_read_adc(charger, MP2629_BATT_VOLT, val);
ret = mp2629_read_adc(charger, MP2629_BATT_CURRENT, val);
ret = mp2629_read_adc(charger, MP2629_INPUT_VOLT, val);
ret = mp2629_read_adc(charger, MP2629_INPUT_CURRENT, val);