57 lines
1 KiB
C
57 lines
1 KiB
C
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/*
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* STMicroelectronics hts221 sensor driver
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*
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* Copyright 2016 STMicroelectronics Inc.
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*
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* Lorenzo Bianconi <lorenzo.bianconi@st.com>
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*
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* Licensed under the GPL-2.
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*/
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#ifndef HTS221_H
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#define HTS221_H
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#define HTS221_DEV_NAME "hts221"
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#include <linux/iio/iio.h>
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enum hts221_sensor_type {
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HTS221_SENSOR_H,
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HTS221_SENSOR_T,
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HTS221_SENSOR_MAX,
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};
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struct hts221_sensor {
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u8 cur_avg_idx;
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int slope, b_gen;
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};
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struct hts221_hw {
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const char *name;
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struct device *dev;
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struct regmap *regmap;
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struct iio_trigger *trig;
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int irq;
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struct hts221_sensor sensors[HTS221_SENSOR_MAX];
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bool enabled;
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u8 odr;
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/* Ensure natural alignment of timestamp */
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struct {
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__le16 channels[2];
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s64 ts __aligned(8);
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} scan;
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};
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extern const struct dev_pm_ops hts221_pm_ops;
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int hts221_probe(struct device *dev, int irq, const char *name,
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struct regmap *regmap);
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int hts221_set_enable(struct hts221_hw *hw, bool enable);
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int hts221_allocate_buffers(struct hts221_hw *hw);
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int hts221_allocate_trigger(struct hts221_hw *hw);
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#endif /* HTS221_H */
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