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 #define HTS221_DATA_SIZE 2 18 19 enum hts221_sensor_type { 20 HTS221_SENSOR_H, 21 HTS221_SENSOR_T, 22 HTS221_SENSOR_MAX, 23 }; 24 25 struct hts221_sensor { 26 u8 cur_avg_idx; 27 int slope, b_gen; 28 }; 29 30 struct hts221_hw { 31 const char *name; 32 struct device *dev; 33 struct regmap *regmap; 34 35 struct iio_trigger *trig; 36 int irq; 37 38 struct hts221_sensor sensors[HTS221_SENSOR_MAX]; 39 40 bool enabled; 41 u8 odr; 42 }; 43 44 extern const struct dev_pm_ops hts221_pm_ops; 45 46 int hts221_probe(struct device *dev, int irq, const char *name, 47 struct regmap *regmap); 48 int hts221_set_enable(struct hts221_hw *hw, bool enable); 49 int hts221_allocate_buffers(struct hts221_hw *hw); 50 int hts221_allocate_trigger(struct hts221_hw *hw); 51 52 #endif /* HTS221_H */ 53