1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * STMicroelectronics hts221 sensor driver
4 *
5 * Copyright 2016 STMicroelectronics Inc.
6 *
7 * Lorenzo Bianconi <lorenzo.bianconi@st.com>
8 */
9
10#ifndef HTS221_H
11#define HTS221_H
12
13#define HTS221_DEV_NAME "hts221"
14
15#include <linux/iio/iio.h>
16
17enum hts221_sensor_type {
18 HTS221_SENSOR_H,
19 HTS221_SENSOR_T,
20 HTS221_SENSOR_MAX,
21};
22
23struct hts221_sensor {
24 u8 cur_avg_idx;
25 int slope, b_gen;
26};
27
28struct hts221_hw {
29 const char *name;
30 struct device *dev;
31 struct regmap *regmap;
32
33 struct iio_trigger *trig;
34 int irq;
35
36 struct hts221_sensor sensors[HTS221_SENSOR_MAX];
37
38 bool enabled;
39 u8 odr;
40 /* Ensure natural alignment of timestamp */
41 struct {
42 __le16 channels[2];
43 s64 ts __aligned(8);
44 } scan;
45};
46
47extern const struct dev_pm_ops hts221_pm_ops;
48
49int hts221_probe(struct device *dev, int irq, const char *name,
50 struct regmap *regmap);
51int hts221_set_enable(struct hts221_hw *hw, bool enable);
52int hts221_allocate_buffers(struct iio_dev *iio_dev);
53int hts221_allocate_trigger(struct iio_dev *iio_dev);
54
55#endif /* HTS221_H */
56

source code of linux/drivers/iio/humidity/hts221.h