LXR linux/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
  20enum hts221_sensor_type {
  21        HTS221_SENSOR_H,
  22        HTS221_SENSOR_T,
  23        HTS221_SENSOR_MAX,
  24};
  25
  26struct hts221_sensor {
  27        u8 cur_avg_idx;
  28        int slope, b_gen;
  29};
  30
  31struct 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
  45extern const struct dev_pm_ops hts221_pm_ops;
  46
  47int hts221_probe(struct device *dev, int irq, const char *name,
  48                 struct regmap *regmap);
  49int hts221_set_enable(struct hts221_hw *hw, bool enable);
  50int hts221_allocate_buffers(struct hts221_hw *hw);
  51int hts221_allocate_trigger(struct hts221_hw *hw);
  52
  53#endif /* HTS221_H */
  54