qcom_vadc_scale_calib
qcom_vadc_scale_calib(calib_graph, adc_code, absolute, &voltage);
qcom_vadc_scale_calib(calib_graph, adc_code, absolute, &voltage);
qcom_vadc_scale_calib(calib_graph, adc_code, absolute, &voltage);
qcom_vadc_scale_calib(calib_graph, adc_code, absolute, &voltage);