From 68fe7c28faeac160c6474c5df93de6194af17a67 Mon Sep 17 00:00:00 2001 From: Jonathan Santos Date: Mon, 23 Feb 2026 08:59:44 -0300 Subject: [PATCH] iio: adc: ad7768-1: disable IRQ autoenable 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 Reviewed-by: David Lechner Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7768-1.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c index a927ae288fbb..b77523393a18 100644 --- a/drivers/iio/adc/ad7768-1.c +++ b/drivers/iio/adc/ad7768-1.c @@ -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;