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 "adis16260.h" 9 10/** 11 * adis16260_data_rdy_trigger_set_state() set datardy interrupt state 12 **/ 13static int adis16260_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 adis16260_set_irq(indio_dev, state); 20} 21 22static const struct iio_trigger_ops adis16260_trigger_ops = { 23 .owner = THIS_MODULE, 24 .set_trigger_state = &adis16260_data_rdy_trigger_set_state, 25}; 26 27int adis16260_probe_trigger(struct iio_dev *indio_dev) 28{ 29 int ret; 30 struct adis16260_state *st = iio_priv(indio_dev); 31 32 st->trig = iio_allocate_trigger("%s-dev%d", 33 spi_get_device_id(st->us)->name, 34 indio_dev->id); 35 if (st->trig == NULL) { 36 ret = -ENOMEM; 37 goto error_ret; 38 } 39 40 ret = request_irq(st->us->irq, 41 &iio_trigger_generic_data_rdy_poll, 42 IRQF_TRIGGER_RISING, 43 "adis16260", 44 st->trig); 45 if (ret) 46 goto error_free_trig; 47 48 st->trig->dev.parent = &st->us->dev; 49 st->trig->ops = &adis16260_trigger_ops; 50 st->trig->private_data = indio_dev; 51 ret = iio_trigger_register(st->trig); 52 53 /* select default trigger */ 54 indio_dev->trig = st->trig; 55 if (ret) 56 goto error_free_irq; 57 58 return 0; 59 60error_free_irq: 61 free_irq(st->us->irq, st->trig); 62error_free_trig: 63 iio_free_trigger(st->trig); 64error_ret: 65 return ret; 66} 67 68void adis16260_remove_trigger(struct iio_dev *indio_dev) 69{ 70 struct adis16260_state *st = iio_priv(indio_dev); 71 72 iio_trigger_unregister(st->trig); 73 free_irq(st->us->irq, st->trig); 74 iio_free_trigger(st->trig); 75} 76