projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| fda8d26e | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| e4a70e3e LB |
2 | /* |
| 3 | * STMicroelectronics hts221 sensor driver | |
| 4 | * | |
| 5 | * Copyright 2016 STMicroelectronics Inc. | |
| 6 | * | |
| 7 | * Lorenzo Bianconi <lorenzo.bianconi@st.com> | |
| e4a70e3e LB |
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 | ||
| e4a70e3e LB |
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; | |
| 62177922 | 31 | struct regmap *regmap; |
| e4a70e3e | 32 | |
| e4a70e3e LB |
33 | struct iio_trigger *trig; |
| 34 | int irq; | |
| 35 | ||
| 36 | struct hts221_sensor sensors[HTS221_SENSOR_MAX]; | |
| 37 | ||
| b7079eea | 38 | bool enabled; |
| e4a70e3e | 39 | u8 odr; |
| 5c49056a JC |
40 | /* Ensure natural alignment of timestamp */ |
| 41 | struct { | |
| 42 | __le16 channels[2]; | |
| 43 | s64 ts __aligned(8); | |
| 44 | } scan; | |
| e4a70e3e LB |
45 | }; |
| 46 | ||
| b7079eea LB |
47 | extern const struct dev_pm_ops hts221_pm_ops; |
| 48 | ||
| e1ca1141 | 49 | int hts221_probe(struct device *dev, int irq, const char *name, |
| 62177922 | 50 | struct regmap *regmap); |
| e3e25446 | 51 | int hts221_set_enable(struct hts221_hw *hw, bool enable); |
| e4a70e3e LB |
52 | int hts221_allocate_buffers(struct hts221_hw *hw); |
| 53 | int hts221_allocate_trigger(struct hts221_hw *hw); | |
| 54 | ||
| 55 | #endif /* HTS221_H */ |