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 trig->timestamp = timestamp;
27 iio_trigger_poll(trig);
32 IIO_EVENT_SH(data_rdy_trig, &adis16260_data_rdy_trig_poll);
34 static DEVICE_ATTR(name, S_IRUGO, iio_trigger_read_name, NULL);
36 static struct attribute *adis16260_trigger_attrs[] = {
41 static const struct attribute_group adis16260_trigger_attr_group = {
42 .attrs = adis16260_trigger_attrs,
46 * adis16260_data_rdy_trigger_set_state() set datardy interrupt state
48 static int adis16260_data_rdy_trigger_set_state(struct iio_trigger *trig,
51 struct adis16260_state *st = trig->private_data;
52 struct iio_dev *indio_dev = st->indio_dev;
55 dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
56 ret = adis16260_set_irq(&st->indio_dev->dev, state);
58 iio_remove_event_from_list(&iio_event_data_rdy_trig,
59 &indio_dev->interrupts[0]
61 flush_scheduled_work();
63 iio_add_event_to_list(&iio_event_data_rdy_trig,
64 &indio_dev->interrupts[0]->ev_list);
70 * adis16260_trig_try_reen() try renabling irq for data rdy trigger
71 * @trig: the datardy trigger
73 static int adis16260_trig_try_reen(struct iio_trigger *trig)
75 struct adis16260_state *st = trig->private_data;
76 enable_irq(st->us->irq);
80 int adis16260_probe_trigger(struct iio_dev *indio_dev)
83 struct adis16260_state *st = indio_dev->dev_data;
85 st->trig = iio_allocate_trigger();
86 st->trig->name = kmalloc(IIO_TRIGGER_NAME_LENGTH, GFP_KERNEL);
87 if (!st->trig->name) {
91 snprintf((char *)st->trig->name,
92 IIO_TRIGGER_NAME_LENGTH,
93 "adis16260-dev%d", indio_dev->id);
94 st->trig->dev.parent = &st->us->dev;
95 st->trig->owner = THIS_MODULE;
96 st->trig->private_data = st;
97 st->trig->set_trigger_state = &adis16260_data_rdy_trigger_set_state;
98 st->trig->try_reenable = &adis16260_trig_try_reen;
99 st->trig->control_attrs = &adis16260_trigger_attr_group;
100 ret = iio_trigger_register(st->trig);
102 /* select default trigger */
103 indio_dev->trig = st->trig;
105 goto error_free_trig_name;
109 error_free_trig_name:
110 kfree(st->trig->name);
112 iio_free_trigger(st->trig);
117 void adis16260_remove_trigger(struct iio_dev *indio_dev)
119 struct adis16260_state *state = indio_dev->dev_data;
121 iio_trigger_unregister(state->trig);
122 kfree(state->trig->name);
123 iio_free_trigger(state->trig);