LXR linux/drivers/iio/humidity/hts221.h

   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
  18enum hts221_sensor_type {
  19        HTS221_SENSOR_H,
  20        HTS221_SENSOR_T,
  21        HTS221_SENSOR_MAX,
  22};
  23
  24struct hts221_sensor {
  25        u8 cur_avg_idx;
  26        int slope, b_gen;
  27};
  28
  29struct 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
  49extern const struct dev_pm_ops hts221_pm_ops;
  50
  51int hts221_probe(struct device *dev, int irq, const char *name,
  52                 struct regmap *regmap);
  53int hts221_set_enable(struct hts221_hw *hw, bool enable);
  54int hts221_allocate_buffers(struct iio_dev *iio_dev);
  55int hts221_allocate_trigger(struct iio_dev *iio_dev);
  56
  57#endif /* HTS221_H */
  58