diff options
| author | Jonathan Santos <Jonathan.Santos@analog.com> | 2026-02-23 14:59:44 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2026-03-01 15:07:11 +0300 |
| commit | 68fe7c28faeac160c6474c5df93de6194af17a67 (patch) | |
| tree | 369a8fd7540d950543ed0683387068d0d71cc732 | |
| parent | 81fdc3127d013a552465c3bf9829afbed5184406 (diff) | |
| download | linux-68fe7c28faeac160c6474c5df93de6194af17a67.tar.xz | |
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 <Jonathan.Santos@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/adc/ad7768-1.c | 18 |
1 files changed, 17 insertions, 1 deletions
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; |