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 #include <linux/regulator/consumer.h> 17 18 enum hts221_sensor_type { 19 HTS221_SENSOR_H, 20 HTS221_SENSOR_T, 21 HTS221_SENSOR_MAX, 22 }; 23 24 struct hts221_sensor { 25 u8 cur_avg_idx; 26 int slope, b_gen; 27 }; 28 29 struct hts221_hw { 30 const char *name; 31 struct device *dev; 32 struct regmap *regmap; 33 struct regulator *vdd; 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 /* Ensure natural alignment of timestamp */ 43 struct { 44 __le16 channels[2]; 45 s64 ts __aligned(8); 46 } scan; 47 }; 48 49 extern const struct dev_pm_ops hts221_pm_ops; 50 51 int hts221_probe(struct device *dev, int irq, const char *name, 52 struct regmap *regmap); 53 int hts221_set_enable(struct hts221_hw *hw, bool enable); 54 int hts221_allocate_buffers(struct iio_dev *iio_dev); 55 int hts221_allocate_trigger(struct iio_dev *iio_dev); 56 57 #endif /* HTS221_H */ 58