From: Russ Dill <Russ.Dill@xxxxxx> The ADC needs to go through a proper initialization sequence after resuming from suspend. Signed-off-by: Russ Dill <Russ.Dill@xxxxxx> Signed-off-by: Zubair Lutfullah <zubair.lutfullah@xxxxxxxxx> --- drivers/iio/adc/ti_am335x_adc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index 44b7181..265ed27 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -552,11 +552,14 @@ static int tiadc_resume(struct device *dev) struct tiadc_device *adc_dev = iio_priv(indio_dev); unsigned int restore; + restore = tiadc_readl(adc_dev, REG_CTRL); + restore &= ~(CNTRLREG_TSCSSENB); + tiadc_writel(adc_dev, REG_CTRL, restore); tiadc_writel(adc_dev, REG_FIFO1THR, FIFO1_THRESHOLD); tiadc_step_config(adc_dev, adc_dev->is_continuous_mode); /* Make sure ADC is powered up */ - restore = tiadc_readl(adc_dev, REG_CTRL); restore &= ~(CNTRLREG_POWERDOWN); + restore |= CNTRLREG_TSCSSENB; tiadc_writel(adc_dev, REG_CTRL, restore); return 0; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
