1 #include <linux/interrupt.h>
3 #include <linux/mutex.h>
4 #include <linux/device.h>
5 #include <linux/kernel.h>
6 #include <linux/sysfs.h>
7 #include <linux/list.h>
8 #include <linux/spi/spi.h>
12 #include "../trigger.h"
13 #include "adis16260.h"
16 * adis16260_data_rdy_trig_poll() the event handler for the data rdy trig
18 static int adis16260_data_rdy_trig_poll(struct iio_dev *dev_info,
23 struct adis16260_state *st = iio_dev_get_devdata(dev_info);
24 struct iio_trigger *trig = st->trig;
26 iio_trigger_poll(trig, timestamp);
31 IIO_EVENT_SH(data_rdy_trig, &adis16260_data_rdy_trig_poll);
33 static IIO_TRIGGER_NAME_ATTR;
35 static struct attribute *adis16260_trigger_attrs[] = {
40 static const struct attribute_group adis16260_trigger_attr_group = {
41 .attrs = adis16260_trigger_attrs,
45 * adis16260_data_rdy_trigger_set_state() set datardy interrupt state
47 static int adis16260_data_rdy_trigger_set_state(struct iio_trigger *trig,
50 struct adis16260_state *st = trig->private_data;
51 struct iio_dev *indio_dev = st->indio_dev;
54 dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
55 ret = adis16260_set_irq(&st->indio_dev->dev, state);
57 iio_remove_event_from_list(&iio_event_data_rdy_trig,
58 &indio_dev->interrupts[0]
60 flush_scheduled_work();
62 iio_add_event_to_list(&iio_event_data_rdy_trig,
63 &indio_dev->interrupts[0]->ev_list);
69 * adis16260_trig_try_reen() try renabling irq for data rdy trigger
70 * @trig: the datardy trigger
72 static int adis16260_trig_try_reen(struct iio_trigger *trig)
74 struct adis16260_state *st = trig->private_data;
75 enable_irq(st->us->irq);
79 int adis16260_probe_trigger(struct iio_dev *indio_dev)
82 struct adis16260_state *st = indio_dev->dev_data;
84 st->trig = iio_allocate_trigger();
85 st->trig->name = kasprintf(GFP_KERNEL,
88 if (!st->trig->name) {
92 st->trig->dev.parent = &st->us->dev;
93 st->trig->owner = THIS_MODULE;
94 st->trig->private_data = st;
95 st->trig->set_trigger_state = &adis16260_data_rdy_trigger_set_state;
96 st->trig->try_reenable = &adis16260_trig_try_reen;
97 st->trig->control_attrs = &adis16260_trigger_attr_group;
98 ret = iio_trigger_register(st->trig);
100 /* select default trigger */
101 indio_dev->trig = st->trig;
103 goto error_free_trig_name;
107 error_free_trig_name:
108 kfree(st->trig->name);
110 iio_free_trigger(st->trig);
115 void adis16260_remove_trigger(struct iio_dev *indio_dev)
117 struct adis16260_state *state = indio_dev->dev_data;
119 iio_trigger_unregister(state->trig);
120 kfree(state->trig->name);
121 iio_free_trigger(state->trig);