1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * STMicroelectronics pressures driver
4 *
5 * Copyright 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/slab.h>
13#include <linux/stat.h>
14#include <linux/interrupt.h>
15#include <linux/i2c.h>
16#include <linux/delay.h>
17#include <linux/iio/iio.h>
18#include <linux/iio/buffer.h>
19#include <linux/iio/trigger_consumer.h>
20#include <linux/iio/triggered_buffer.h>
21
22#include <linux/iio/common/st_sensors.h>
23#include "st_pressure.h"
24
25int st_press_trig_set_state(struct iio_trigger *trig, bool state)
26{
27	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
28
29	return st_sensors_set_dataready_irq(indio_dev, state);
30}
31
32static int st_press_buffer_postenable(struct iio_dev *indio_dev)
33{
34	return st_sensors_set_enable(indio_dev, true);
35}
36
37static int st_press_buffer_predisable(struct iio_dev *indio_dev)
38{
39	return st_sensors_set_enable(indio_dev, false);
40}
41
42static const struct iio_buffer_setup_ops st_press_buffer_setup_ops = {
43	.postenable = &st_press_buffer_postenable,
44	.predisable = &st_press_buffer_predisable,
45};
46
47int st_press_allocate_ring(struct iio_dev *indio_dev)
48{
49	return iio_triggered_buffer_setup(indio_dev, NULL,
50		&st_sensors_trigger_handler, &st_press_buffer_setup_ops);
51}
52
53void st_press_deallocate_ring(struct iio_dev *indio_dev)
54{
55	iio_triggered_buffer_cleanup(indio_dev);
56}
57
58MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
59MODULE_DESCRIPTION("STMicroelectronics pressures buffer");
60MODULE_LICENSE("GPL v2");
61