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 | |
17 | enum hts221_sensor_type { |
18 | HTS221_SENSOR_H, |
19 | HTS221_SENSOR_T, |
20 | HTS221_SENSOR_MAX, |
21 | }; |
22 | |
23 | struct hts221_sensor { |
24 | u8 cur_avg_idx; |
25 | int slope, b_gen; |
26 | }; |
27 | |
28 | struct 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 | |
47 | extern const struct dev_pm_ops hts221_pm_ops; |
48 | |
49 | int hts221_probe(struct device *dev, int irq, const char *name, |
50 | struct regmap *regmap); |
51 | int hts221_set_enable(struct hts221_hw *hw, bool enable); |
52 | int hts221_allocate_buffers(struct iio_dev *iio_dev); |
53 | int hts221_allocate_trigger(struct iio_dev *iio_dev); |
54 | |
55 | #endif /* HTS221_H */ |
56 | |