[PATCH 5/5] iio: stmpe-adc: Reset possible interrupts

Philippe Schenker
2019-05-07T14:36:43Z

From: Philippe Schenker <philippe.schenker@toradex.com>

Clear any interrupt that still is on the device on every channel
this driver is activated for in probe and specific channels in
the timeout handler.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>

---

drivers/iio/adc/stmpe-adc.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/iio/adc/stmpe-adc.c b/drivers/iio/adc/stmpe-adc.c
index cc752a47444c..a5990e9f2c80 100644
--- a/drivers/iio/adc/stmpe-adc.c
+++ b/drivers/iio/adc/stmpe-adc.c
@@ -80,6 +80,8 @@ static int stmpe_read_voltage(struct stmpe_adc *info,
ret = wait_for_completion_timeout(&info->completion, STMPE_ADC_TIMEOUT);

if (ret <= 0) {
+ stmpe_reg_write(info->stmpe, STMPE_REG_ADC_INT_STA,
+ STMPE_ADC_CH(info->channel));
mutex_unlock(&info->lock);
return -ETIMEDOUT;
}
@@ -326,6 +328,9 @@ static int stmpe_adc_probe(struct platform_device *pdev)
stmpe_reg_write(info->stmpe, STMPE_REG_ADC_INT_EN,
~(norequest_mask & 0xFF));

+ stmpe_reg_write(info->stmpe, STMPE_REG_ADC_INT_STA,
+ ~(norequest_mask & 0xFF));
+
return devm_iio_device_register(&pdev->dev, indio_dev);
}

--
2.21.0