Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
authored by
Jonathan Santos
and committed by
Jonathan Cameron
68fe7c28
81fdc312
+17
-1
+17
-1
drivers/iio/adc/ad7768-1.c
+17
-1
drivers/iio/adc/ad7768-1.c
···
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int readval, ret;
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reinit_completion(&st->completion);
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+
enable_irq(st->spi->irq);
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ret = wait_for_completion_timeout(&st->completion,
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msecs_to_jiffies(1000));
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+
disable_irq(st->spi->irq);
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if (!ret)
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return -ETIMEDOUT;
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···
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.predisable = &ad7768_buffer_predisable,
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};
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+
static int ad7768_set_trigger_state(struct iio_trigger *trig, bool enable)
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+
{
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struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
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+
struct ad7768_state *st = iio_priv(indio_dev);
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+
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+
if (enable)
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+
enable_irq(st->spi->irq);
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+
else
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disable_irq(st->spi->irq);
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+
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+
return 0;
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+
}
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+
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static const struct iio_trigger_ops ad7768_trigger_ops = {
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.validate_device = iio_trigger_validate_own_device,
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+
.set_trigger_state = ad7768_set_trigger_state,
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};
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static int ad7768_set_channel_label(struct iio_dev *indio_dev,
···
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return ret;
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ret = devm_request_irq(&spi->dev, spi->irq, &ad7768_interrupt,
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-
IRQF_TRIGGER_RISING | IRQF_NO_THREAD,
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+
IRQF_TRIGGER_RISING | IRQF_NO_THREAD | IRQF_NO_AUTOEN,
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indio_dev->name, indio_dev);
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if (ret)
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return ret;