/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Measurements Specialties common sensor driver
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*
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* Copyright (c) 2015 Measurement-Specialties
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*/
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#ifndef _MS_SENSORS_I2C_H
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#define _MS_SENSORS_I2C_H
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#include <linux/i2c.h>
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#include <linux/mutex.h>
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#define MS_SENSORS_TP_PROM_WORDS_NB 7
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/**
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* struct ms_ht_dev - Humidity/Temperature sensor device structure
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* @client: i2c client
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* @lock: lock protecting the i2c conversion
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* @res_index: index to selected sensor resolution
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*/
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struct ms_ht_dev {
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struct i2c_client *client;
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struct mutex lock;
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u8 res_index;
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};
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/**
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* struct ms_tp_dev - Temperature/Pressure sensor device structure
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* @client: i2c client
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* @lock: lock protecting the i2c conversion
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* @prom: array of PROM coefficients used for conversion. Added element
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* for CRC computation
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* @res_index: index to selected sensor resolution
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*/
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struct ms_tp_dev {
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struct i2c_client *client;
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struct mutex lock;
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u16 prom[MS_SENSORS_TP_PROM_WORDS_NB + 1];
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u8 res_index;
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};
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int ms_sensors_reset(void *cli, u8 cmd, unsigned int delay);
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int ms_sensors_read_prom_word(void *cli, int cmd, u16 *word);
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int ms_sensors_convert_and_read(void *cli, u8 conv, u8 rd,
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unsigned int delay, u32 *adc);
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int ms_sensors_read_serial(struct i2c_client *client, u64 *sn);
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ssize_t ms_sensors_show_serial(struct ms_ht_dev *dev_data, char *buf);
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ssize_t ms_sensors_write_resolution(struct ms_ht_dev *dev_data, u8 i);
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ssize_t ms_sensors_show_battery_low(struct ms_ht_dev *dev_data, char *buf);
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ssize_t ms_sensors_show_heater(struct ms_ht_dev *dev_data, char *buf);
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ssize_t ms_sensors_write_heater(struct ms_ht_dev *dev_data,
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const char *buf, size_t len);
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int ms_sensors_ht_read_temperature(struct ms_ht_dev *dev_data,
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s32 *temperature);
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int ms_sensors_ht_read_humidity(struct ms_ht_dev *dev_data,
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u32 *humidity);
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int ms_sensors_tp_read_prom(struct ms_tp_dev *dev_data);
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int ms_sensors_read_temp_and_pressure(struct ms_tp_dev *dev_data,
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int *temperature,
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unsigned int *pressure);
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#endif /* _MS_SENSORS_I2C_H */
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