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iio:bmi160: use iio_pollfunc_store_time 

Currently, we snap the timestamp after reading from the buffer and
processing the event. When the IIO poll function is triggered by an
interrupt,  we can get a slightly more accurate timestamp by snapping it
prior to reading the data, since the data was already generated prior to
entering the trigger handler. This is not going to make a huge difference,
but we might as well improve slightly.

Do this by using iio_pollfunc_store_time as other drivers do.

Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Martin Kelly 2019-02-02 13:56:00 -08:00 committed by Jonathan Cameron
parent b7905e4c57
commit 0a3f50e4d6
1 changed files with 3 additions and 3 deletions
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6
drivers/iio/imu/bmi160/bmi160_core.c
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@ -425,8 +425,7 @@ static irqreturn_t bmi160_trigger_handler(int irq, void *p)
buf[j++] = sample;
}
iio_push_to_buffers_with_timestamp(indio_dev, buf,
iio_get_time_ns(indio_dev));
iio_push_to_buffers_with_timestamp(indio_dev, buf, pf->timestamp);
done:
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
@ -834,7 +833,8 @@ int bmi160_core_probe(struct device *dev, struct regmap *regmap,
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &bmi160_info;
ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
iio_pollfunc_store_time,
bmi160_trigger_handler, NULL);
if (ret < 0)
return ret;