1 /* 2 * STMicroelectronics hts221 sensor driver 3 * 4 * Copyright 2016 STMicroelectronics Inc. 5 * 6 * Lorenzo Bianconi <lorenzo.bianconi@st.com> 7 * 8 * Licensed under the GPL-2. 9 */ 10 11 #ifndef HTS221_H 12 #define HTS221_H 13 14 #define HTS221_DEV_NAME "hts221" 15 16 #include <linux/iio/iio.h> 17 18 #define HTS221_DATA_SIZE 2 19 20 enum hts221_sensor_type { 21 HTS221_SENSOR_H, 22 HTS221_SENSOR_T, 23 HTS221_SENSOR_MAX, 24 }; 25 26 struct hts221_sensor { 27 u8 cur_avg_idx; 28 int slope, b_gen; 29 }; 30 31 struct hts221_hw { 32 const char *name; 33 struct device *dev; 34 struct regmap *regmap; 35 36 struct iio_trigger *trig; 37 int irq; 38 39 struct hts221_sensor sensors[HTS221_SENSOR_MAX]; 40 41 bool enabled; 42 u8 odr; 43 }; 44 45 extern const struct dev_pm_ops hts221_pm_ops; 46 47 int hts221_probe(struct device *dev, int irq, const char *name, 48 struct regmap *regmap); 49 int hts221_set_enable(struct hts221_hw *hw, bool enable); 50 int hts221_allocate_buffers(struct hts221_hw *hw); 51 int hts221_allocate_trigger(struct hts221_hw *hw); 52 53 #endif /* HTS221_H */ 54