1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * STMicroelectronics magnetometers driver
4 *
5 * Copyright 2012-2013 STMicroelectronics Inc.
6 *
7 * Denis Ciocca <denis.ciocca@st.com>
8 */
9
10 #include <linux/module.h>
11 #include <linux/kernel.h>
12 #include <linux/iio/iio.h>
13 #include <linux/iio/buffer.h>
14 #include <linux/iio/trigger.h>
15 #include <linux/iio/triggered_buffer.h>
16
17 #include <linux/iio/common/st_sensors.h>
18 #include "st_magn.h"
19
st_magn_trig_set_state(struct iio_trigger * trig,bool state)20 int st_magn_trig_set_state(struct iio_trigger *trig, bool state)
21 {
22 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
23
24 return st_sensors_set_dataready_irq(indio_dev, state);
25 }
26
st_magn_buffer_postenable(struct iio_dev * indio_dev)27 static int st_magn_buffer_postenable(struct iio_dev *indio_dev)
28 {
29 return st_sensors_set_enable(indio_dev, true);
30 }
31
st_magn_buffer_predisable(struct iio_dev * indio_dev)32 static int st_magn_buffer_predisable(struct iio_dev *indio_dev)
33 {
34 return st_sensors_set_enable(indio_dev, false);
35 }
36
37 static const struct iio_buffer_setup_ops st_magn_buffer_setup_ops = {
38 .postenable = &st_magn_buffer_postenable,
39 .predisable = &st_magn_buffer_predisable,
40 };
41
st_magn_allocate_ring(struct iio_dev * indio_dev)42 int st_magn_allocate_ring(struct iio_dev *indio_dev)
43 {
44 return devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev,
45 NULL, &st_sensors_trigger_handler, &st_magn_buffer_setup_ops);
46 }
47
48 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
49 MODULE_DESCRIPTION("STMicroelectronics magnetometers buffer");
50 MODULE_LICENSE("GPL v2");
51