iio: xilinx-xadc: Fix ADC-B powerdown

[platform/kernel/linux-rpi.git] / drivers / iio / adc / xilinx-xadc-core.c

diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
index 4fd3896..519f937 100644 (file)
--- a/drivers/iio/adc/xilinx-xadc-core.c
+++ b/drivers/iio/adc/xilinx-xadc-core.c
@@ -722,13 +722,14 @@ static int xadc_power_adc_b(struct xadc *xadc, unsigned int seq_mode)
 {
        uint16_t val;
 
+       /* Powerdown the ADC-B when it is not needed. */
        switch (seq_mode) {
        case XADC_CONF1_SEQ_SIMULTANEOUS:
        case XADC_CONF1_SEQ_INDEPENDENT:
-               val = XADC_CONF2_PD_ADC_B;
+               val = 0;
                break;
        default:
-               val = 0;
+               val = XADC_CONF2_PD_ADC_B;
                break;
        }