1 // SPDX-License-Identifier: GPL-2.0-only
3 * STMicroelectronics magnetometers driver
5 * Copyright 2012-2013 STMicroelectronics Inc.
7 * Denis Ciocca <denis.ciocca@st.com>
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>
17 #include <linux/iio/common/st_sensors.h>
20 int st_magn_trig_set_state(struct iio_trigger *trig, bool state)
22 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
24 return st_sensors_set_dataready_irq(indio_dev, state);
27 static int st_magn_buffer_postenable(struct iio_dev *indio_dev)
29 return st_sensors_set_enable(indio_dev, true);
32 static int st_magn_buffer_predisable(struct iio_dev *indio_dev)
34 return st_sensors_set_enable(indio_dev, false);
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,
42 int st_magn_allocate_ring(struct iio_dev *indio_dev)
44 return devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev,
45 NULL, &st_sensors_trigger_handler, &st_magn_buffer_setup_ops);
48 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
49 MODULE_DESCRIPTION("STMicroelectronics magnetometers buffer");
50 MODULE_LICENSE("GPL v2");