1 #include <linux/interrupt.h>
2 #include <linux/kernel.h>
3 #include <linux/spi/spi.h>
4 #include <linux/export.h>
6 #include <linux/iio/iio.h>
7 #include <linux/iio/trigger.h>
11 * adis16240_data_rdy_trig_poll() the event handler for the data rdy trig
13 static irqreturn_t adis16240_data_rdy_trig_poll(int irq, void *trig)
15 iio_trigger_poll(trig, iio_get_time_ns());
20 * adis16240_data_rdy_trigger_set_state() set datardy interrupt state
22 static int adis16240_data_rdy_trigger_set_state(struct iio_trigger *trig,
25 struct iio_dev *indio_dev = trig->private_data;
27 dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
28 return adis16240_set_irq(indio_dev, state);
31 static const struct iio_trigger_ops adis16240_trigger_ops = {
33 .set_trigger_state = &adis16240_data_rdy_trigger_set_state,
36 int adis16240_probe_trigger(struct iio_dev *indio_dev)
39 struct adis16240_state *st = iio_priv(indio_dev);
41 st->trig = iio_trigger_alloc("adis16240-dev%d", indio_dev->id);
42 if (st->trig == NULL) {
47 ret = request_irq(st->us->irq,
48 adis16240_data_rdy_trig_poll,
55 st->trig->dev.parent = &st->us->dev;
56 st->trig->ops = &adis16240_trigger_ops;
57 st->trig->private_data = indio_dev;
58 ret = iio_trigger_register(st->trig);
60 /* select default trigger */
61 indio_dev->trig = st->trig;
68 free_irq(st->us->irq, st->trig);
70 iio_trigger_free(st->trig);
75 void adis16240_remove_trigger(struct iio_dev *indio_dev)
77 struct adis16240_state *st = iio_priv(indio_dev);
79 iio_trigger_unregister(st->trig);
80 free_irq(st->us->irq, st->trig);
81 iio_trigger_free(st->trig);