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/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_pressure.h"
19 
20 int st_press_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 
27 static int st_press_buffer_postenable(struct iio_dev *indio_dev)
28 {
29 	return st_sensors_set_enable(indio_dev, true);
30 }
31 
32 static int st_press_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_press_buffer_setup_ops = {
38 	.postenable = &st_press_buffer_postenable,
39 	.predisable = &st_press_buffer_predisable,
40 };
41 
42 int st_press_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_press_buffer_setup_ops);
46 }
47 
48 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
49 MODULE_DESCRIPTION("STMicroelectronics pressures buffer");
50 MODULE_LICENSE("GPL v2");
51