Merge tag 'pinctrl-v5.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
[linux-2.6-microblaze.git] / drivers / iio / humidity / hts221.h
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 hts221_hw *hw);
53 int hts221_allocate_trigger(struct hts221_hw *hw);
54
55 #endif /* HTS221_H */