1 // SPDX-License-Identifier: GPL-2.0-only
3 * STMicroelectronics accelerometers 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_accel_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_accel_buffer_postenable(struct iio_dev *indio_dev)
31 err = st_sensors_set_axis_enable(indio_dev, indio_dev->active_scan_mask[0]);
35 err = st_sensors_set_enable(indio_dev, true);
37 goto st_accel_buffer_enable_all_axis;
41 st_accel_buffer_enable_all_axis:
42 st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS);
46 static int st_accel_buffer_predisable(struct iio_dev *indio_dev)
50 err = st_sensors_set_enable(indio_dev, false);
54 return st_sensors_set_axis_enable(indio_dev,
55 ST_SENSORS_ENABLE_ALL_AXIS);
58 static const struct iio_buffer_setup_ops st_accel_buffer_setup_ops = {
59 .postenable = &st_accel_buffer_postenable,
60 .predisable = &st_accel_buffer_predisable,
63 int st_accel_allocate_ring(struct iio_dev *indio_dev)
65 return devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev,
66 NULL, &st_sensors_trigger_handler, &st_accel_buffer_setup_ops);
69 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
70 MODULE_DESCRIPTION("STMicroelectronics accelerometers buffer");
71 MODULE_LICENSE("GPL v2");