drivers/iio/humidity/hts221.h

   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 */