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iio: st_sensors: Disable DRDY at init time

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This fixes odd behavior after reboot.

The fact that we set the device to powerdown mode is not sufficient to
prevent DRDY being active because we might still have an unread sample.

Even if powerdown was sufficient keeping DRDY disabled while trigger is
not active is a good idea.

Cc: Giuseppe Barba <giuseppe.barba@st.com>
Cc: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Crestez Dan Leonard 2016-05-13 21:43:34 +03:00 committed by Jonathan Cameron
parent ff05916f94
commit 9914760615
1 changed files with 5 additions and 0 deletions
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5
drivers/iio/common/st_sensors/st_sensors_core.c
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@ -363,6 +363,11 @@ int st_sensors_init_sensor(struct iio_dev *indio_dev,
if (err < 0)
return err;
/* Disable DRDY, this might be still be enabled after reboot. */
err = st_sensors_set_dataready_irq(indio_dev, false);
if (err < 0)
return err;
if (sdata->current_fullscale) {
err = st_sensors_set_fullscale(indio_dev,
sdata->current_fullscale->num);