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iio: adc: ad7768-1: disable IRQ autoenable

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The device continuously converts data while powered up, generating
interrupts in the background. Configure the IRQ to be enabled and
disabled manually as needed to avoid unnecessary CPU load.

Signed-off-by: Jonathan Santos <Jonathan.Santos@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Jonathan Santos 2026-02-23 08:59:44 -03:00 committed by Jonathan Cameron
parent 81fdc3127d
commit 68fe7c28fa
1 changed files with 17 additions and 1 deletions
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18
drivers/iio/adc/ad7768-1.c
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@ -464,9 +464,11 @@ static int ad7768_scan_direct(struct iio_dev *indio_dev)
int readval, ret;
reinit_completion(&st->completion);
enable_irq(st->spi->irq);
ret = wait_for_completion_timeout(&st->completion,
msecs_to_jiffies(1000));
disable_irq(st->spi->irq);
if (!ret)
return -ETIMEDOUT;
@ -1339,8 +1341,22 @@ static const struct iio_buffer_setup_ops ad7768_buffer_ops = {
.predisable = &ad7768_buffer_predisable,
};
static int ad7768_set_trigger_state(struct iio_trigger *trig, bool enable)
{
struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
struct ad7768_state *st = iio_priv(indio_dev);
if (enable)
enable_irq(st->spi->irq);
else
disable_irq(st->spi->irq);
return 0;
}
static const struct iio_trigger_ops ad7768_trigger_ops = {
.validate_device = iio_trigger_validate_own_device,
.set_trigger_state = ad7768_set_trigger_state,
};
static int ad7768_set_channel_label(struct iio_dev *indio_dev,
@ -1704,7 +1720,7 @@ static int ad7768_probe(struct spi_device *spi)
return ret;
ret = devm_request_irq(&spi->dev, spi->irq, &ad7768_interrupt,
IRQF_TRIGGER_RISING | IRQF_NO_THREAD,
IRQF_TRIGGER_RISING | IRQF_NO_THREAD | IRQF_NO_AUTOEN,
indio_dev->name, indio_dev);
if (ret)
return ret;