1 #include <linux/interrupt.h>
2 #include <linux/kernel.h>
3 #include <linux/spi/spi.h>
4 #include <linux/export.h>
5
6 #include "../iio.h"
7 #include "../trigger.h"
8 #include "adis16201.h"
9
10 /**
11 * adis16201_data_rdy_trigger_set_state() set datardy interrupt state
12 **/
adis16201_data_rdy_trigger_set_state(struct iio_trigger * trig,bool state)13 static int adis16201_data_rdy_trigger_set_state(struct iio_trigger *trig,
14 bool state)
15 {
16 struct iio_dev *indio_dev = trig->private_data;
17
18 dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
19 return adis16201_set_irq(indio_dev, state);
20 }
21
22 static const struct iio_trigger_ops adis16201_trigger_ops = {
23 .owner = THIS_MODULE,
24 .set_trigger_state = &adis16201_data_rdy_trigger_set_state,
25 };
26
adis16201_probe_trigger(struct iio_dev * indio_dev)27 int adis16201_probe_trigger(struct iio_dev *indio_dev)
28 {
29 int ret;
30 struct adis16201_state *st = iio_priv(indio_dev);
31
32 st->trig = iio_allocate_trigger("adis16201-dev%d", indio_dev->id);
33 if (st->trig == NULL) {
34 ret = -ENOMEM;
35 goto error_ret;
36 }
37 ret = request_irq(st->us->irq,
38 &iio_trigger_generic_data_rdy_poll,
39 IRQF_TRIGGER_RISING,
40 "adis16201",
41 st->trig);
42 if (ret)
43 goto error_free_trig;
44 st->trig->dev.parent = &st->us->dev;
45 st->trig->ops = &adis16201_trigger_ops;
46 st->trig->private_data = indio_dev;
47 ret = iio_trigger_register(st->trig);
48
49 /* select default trigger */
50 indio_dev->trig = st->trig;
51 if (ret)
52 goto error_free_irq;
53
54 return 0;
55
56 error_free_irq:
57 free_irq(st->us->irq, st->trig);
58 error_free_trig:
59 iio_free_trigger(st->trig);
60 error_ret:
61 return ret;
62 }
63
adis16201_remove_trigger(struct iio_dev * indio_dev)64 void adis16201_remove_trigger(struct iio_dev *indio_dev)
65 {
66 struct adis16201_state *state = iio_priv(indio_dev);
67
68 iio_trigger_unregister(state->trig);
69 free_irq(state->us->irq, state->trig);
70 iio_free_trigger(state->trig);
71 }
72