From: Vignesh R Date: Sat, 30 Jun 2018 10:33:17 +0000 (+0530) Subject: iio: adc: ti_am335x_adc: Disable ADC during suspend unconditionally X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=9eea8326f4e6862637b94f09deb2ec9f2b50e1bc;p=openwrt%2Fstaging%2Fblogic.git iio: adc: ti_am335x_adc: Disable ADC during suspend unconditionally Parent MFD device takes care of enabling ADC interface whenever touchscreen is marked wakeup capable. Therefore, unconditionally disable ADC interface during system suspend to save power in case of system with just ADC and no TSC. Signed-off-by: Vignesh R Acked-by: Jonathan Cameron Signed-off-by: Lee Jones --- diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index 80df5a377d30..cafb1dcadc48 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -693,16 +693,12 @@ static int __maybe_unused tiadc_suspend(struct device *dev) { struct iio_dev *indio_dev = dev_get_drvdata(dev); struct tiadc_device *adc_dev = iio_priv(indio_dev); - struct ti_tscadc_dev *tscadc_dev; unsigned int idle; - tscadc_dev = ti_tscadc_dev_get(to_platform_device(dev)); - if (!device_may_wakeup(tscadc_dev->dev)) { - idle = tiadc_readl(adc_dev, REG_CTRL); - idle &= ~(CNTRLREG_TSCSSENB); - tiadc_writel(adc_dev, REG_CTRL, (idle | - CNTRLREG_POWERDOWN)); - } + idle = tiadc_readl(adc_dev, REG_CTRL); + idle &= ~(CNTRLREG_TSCSSENB); + tiadc_writel(adc_dev, REG_CTRL, (idle | + CNTRLREG_POWERDOWN)); return 0; }