1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * STMicroelectronics hts221 sensor driver 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright 2016 STMicroelectronics Inc. 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Lorenzo Bianconi <lorenzo.bianconi@st.com> 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #ifndef HTS221_H 11*4882a593Smuzhiyun #define HTS221_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #define HTS221_DEV_NAME "hts221" 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #include <linux/iio/iio.h> 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun enum hts221_sensor_type { 18*4882a593Smuzhiyun HTS221_SENSOR_H, 19*4882a593Smuzhiyun HTS221_SENSOR_T, 20*4882a593Smuzhiyun HTS221_SENSOR_MAX, 21*4882a593Smuzhiyun }; 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun struct hts221_sensor { 24*4882a593Smuzhiyun u8 cur_avg_idx; 25*4882a593Smuzhiyun int slope, b_gen; 26*4882a593Smuzhiyun }; 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun struct hts221_hw { 29*4882a593Smuzhiyun const char *name; 30*4882a593Smuzhiyun struct device *dev; 31*4882a593Smuzhiyun struct regmap *regmap; 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun struct iio_trigger *trig; 34*4882a593Smuzhiyun int irq; 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun struct hts221_sensor sensors[HTS221_SENSOR_MAX]; 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun bool enabled; 39*4882a593Smuzhiyun u8 odr; 40*4882a593Smuzhiyun /* Ensure natural alignment of timestamp */ 41*4882a593Smuzhiyun struct { 42*4882a593Smuzhiyun __le16 channels[2]; 43*4882a593Smuzhiyun s64 ts __aligned(8); 44*4882a593Smuzhiyun } scan; 45*4882a593Smuzhiyun }; 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun extern const struct dev_pm_ops hts221_pm_ops; 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun int hts221_probe(struct device *dev, int irq, const char *name, 50*4882a593Smuzhiyun struct regmap *regmap); 51*4882a593Smuzhiyun int hts221_set_enable(struct hts221_hw *hw, bool enable); 52*4882a593Smuzhiyun int hts221_allocate_buffers(struct iio_dev *iio_dev); 53*4882a593Smuzhiyun int hts221_allocate_trigger(struct iio_dev *iio_dev); 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun #endif /* HTS221_H */ 56