75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
#include <linux/interrupt.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/spi/spi.h>
|
|
#include <linux/export.h>
|
|
|
|
#include <linux/iio/iio.h>
|
|
#include <linux/iio/trigger.h>
|
|
#include "adis16400.h"
|
|
|
|
/**
|
|
* adis16400_data_rdy_trigger_set_state() set datardy interrupt state
|
|
**/
|
|
static int adis16400_data_rdy_trigger_set_state(struct iio_trigger *trig,
|
|
bool state)
|
|
{
|
|
struct iio_dev *indio_dev = trig->private_data;
|
|
|
|
dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
|
|
return adis16400_set_irq(indio_dev, state);
|
|
}
|
|
|
|
static const struct iio_trigger_ops adis16400_trigger_ops = {
|
|
.owner = THIS_MODULE,
|
|
.set_trigger_state = &adis16400_data_rdy_trigger_set_state,
|
|
};
|
|
|
|
int adis16400_probe_trigger(struct iio_dev *indio_dev)
|
|
{
|
|
int ret;
|
|
struct adis16400_state *st = iio_priv(indio_dev);
|
|
|
|
st->trig = iio_trigger_alloc("%s-dev%d",
|
|
indio_dev->name,
|
|
indio_dev->id);
|
|
if (st->trig == NULL) {
|
|
ret = -ENOMEM;
|
|
goto error_ret;
|
|
}
|
|
|
|
ret = request_irq(st->us->irq,
|
|
&iio_trigger_generic_data_rdy_poll,
|
|
IRQF_TRIGGER_RISING,
|
|
"adis16400",
|
|
st->trig);
|
|
if (ret)
|
|
goto error_free_trig;
|
|
st->trig->dev.parent = &st->us->dev;
|
|
st->trig->private_data = indio_dev;
|
|
st->trig->ops = &adis16400_trigger_ops;
|
|
ret = iio_trigger_register(st->trig);
|
|
|
|
/* select default trigger */
|
|
indio_dev->trig = st->trig;
|
|
if (ret)
|
|
goto error_free_irq;
|
|
|
|
return 0;
|
|
|
|
error_free_irq:
|
|
free_irq(st->us->irq, st->trig);
|
|
error_free_trig:
|
|
iio_trigger_free(st->trig);
|
|
error_ret:
|
|
return ret;
|
|
}
|
|
|
|
void adis16400_remove_trigger(struct iio_dev *indio_dev)
|
|
{
|
|
struct adis16400_state *st = iio_priv(indio_dev);
|
|
|
|
iio_trigger_unregister(st->trig);
|
|
free_irq(st->us->irq, st->trig);
|
|
iio_trigger_free(st->trig);
|
|
}
|