HPI_UNITS_PER_dB
uinfo->value.integer.min = min_gain_mB / HPI_UNITS_PER_dB;
uinfo->value.integer.max = max_gain_mB / HPI_UNITS_PER_dB;
uinfo->value.integer.step = step_gain_mB / HPI_UNITS_PER_dB;
an_gain_mB[0] / HPI_UNITS_PER_dB;
an_gain_mB[1] / HPI_UNITS_PER_dB;
(ucontrol->value.integer.value[0]) * HPI_UNITS_PER_dB;
(ucontrol->value.integer.value[1]) * HPI_UNITS_PER_dB;
uinfo->value.integer.min = ((int)gain_range[0]) / HPI_UNITS_PER_dB;
uinfo->value.integer.max = ((int)gain_range[1]) / HPI_UNITS_PER_dB;
uinfo->value.integer.step = ((int) gain_range[2]) / HPI_UNITS_PER_dB;
ucontrol->value.integer.value[0] = gain / HPI_UNITS_PER_dB;
gain = (ucontrol->value.integer.value[0]) * HPI_UNITS_PER_dB;
#define HPI_GAIN_OFF (-100 * HPI_UNITS_PER_dB)
#define HPI_METER_MINIMUM (-150 * HPI_UNITS_PER_dB)