LXR linux/drivers/staging/iio/accel/adis16203

   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 "adis16203.h"
   9
  10/**
  11 * adis16203_data_rdy_trigger_set_state() set datardy interrupt state
  12 **/
  13static int adis16203_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 adis16203_set_irq(indio_dev, state);
  20}
  21
  22static const struct iio_trigger_ops adis16203_trigger_ops = {
  23        .owner = THIS_MODULE,
  24        .set_trigger_state = &adis16203_data_rdy_trigger_set_state,
  25};
  26
  27int adis16203_probe_trigger(struct iio_dev *indio_dev)
  28{
  29        int ret;
  30        struct adis16203_state *st = iio_priv(indio_dev);
  31
  32        st->trig = iio_allocate_trigger("adis16203-dev%d", indio_dev->id);
  33        if (st->trig == NULL) {
  34                ret = -ENOMEM;
  35                goto error_ret;
  36        }
  37
  38        ret = request_irq(st->us->irq,
  39                          &iio_trigger_generic_data_rdy_poll,
  40                          IRQF_TRIGGER_RISING,
  41                          "adis16203",
  42                          st->trig);
  43        if (ret)
  44                goto error_free_trig;
  45
  46        st->trig->dev.parent = &st->us->dev;
  47        st->trig->ops = &adis16203_trigger_ops;
  48        st->trig->private_data = indio_dev;
  49        ret = iio_trigger_register(st->trig);
  50
  51        /* select default trigger */
  52        indio_dev->trig = st->trig;
  53        if (ret)
  54                goto error_free_irq;
  55
  56        return 0;
  57
  58error_free_irq:
  59        free_irq(st->us->irq, st->trig);
  60error_free_trig:
  61        iio_free_trigger(st->trig);
  62error_ret:
  63        return ret;
  64}
  65
  66void adis16203_remove_trigger(struct iio_dev *indio_dev)
  67{
  68        struct adis16203_state *st = iio_priv(indio_dev);
  69
  70        iio_trigger_unregister(st->trig);
  71        free_irq(st->us->irq, st->trig);
  72        iio_free_trigger(st->trig);
  73}
  74