LXR linux/drivers/iio/common/ms_sensors/ms_sensors

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Measurements Specialties common sensor driver
   4 *
   5 * Copyright (c) 2015 Measurement-Specialties
   6 */
   7
   8#ifndef _MS_SENSORS_I2C_H
   9#define _MS_SENSORS_I2C_H
  10
  11#include <linux/i2c.h>
  12#include <linux/mutex.h>
  13
  14#define MS_SENSORS_TP_PROM_WORDS_NB             7
  15
  16/**
  17 * struct ms_ht_dev - Humidity/Temperature sensor device structure
  18 * @client:     i2c client
  19 * @lock:       lock protecting the i2c conversion
  20 * @res_index:  index to selected sensor resolution
  21 */
  22struct ms_ht_dev {
  23        struct i2c_client *client;
  24        struct mutex lock;
  25        u8 res_index;
  26};
  27
  28/**
  29 * struct ms_tp_dev - Temperature/Pressure sensor device structure
  30 * @client:     i2c client
  31 * @lock:       lock protecting the i2c conversion
  32 * @prom:       array of PROM coefficients used for conversion. Added element
  33 *              for CRC computation
  34 * @res_index:  index to selected sensor resolution
  35 */
  36struct ms_tp_dev {
  37        struct i2c_client *client;
  38        struct mutex lock;
  39        u16 prom[MS_SENSORS_TP_PROM_WORDS_NB + 1];
  40        u8 res_index;
  41};
  42
  43int ms_sensors_reset(void *cli, u8 cmd, unsigned int delay);
  44int ms_sensors_read_prom_word(void *cli, int cmd, u16 *word);
  45int ms_sensors_convert_and_read(void *cli, u8 conv, u8 rd,
  46                                unsigned int delay, u32 *adc);
  47int ms_sensors_read_serial(struct i2c_client *client, u64 *sn);
  48ssize_t ms_sensors_show_serial(struct ms_ht_dev *dev_data, char *buf);
  49ssize_t ms_sensors_write_resolution(struct ms_ht_dev *dev_data, u8 i);
  50ssize_t ms_sensors_show_battery_low(struct ms_ht_dev *dev_data, char *buf);
  51ssize_t ms_sensors_show_heater(struct ms_ht_dev *dev_data, char *buf);
  52ssize_t ms_sensors_write_heater(struct ms_ht_dev *dev_data,
  53                                const char *buf, size_t len);
  54int ms_sensors_ht_read_temperature(struct ms_ht_dev *dev_data,
  55                                   s32 *temperature);
  56int ms_sensors_ht_read_humidity(struct ms_ht_dev *dev_data,
  57                                u32 *humidity);
  58int ms_sensors_tp_read_prom(struct ms_tp_dev *dev_data);
  59int ms_sensors_read_temp_and_pressure(struct ms_tp_dev *dev_data,
  60                                      int *temperature,
  61                                      unsigned int *pressure);
  62
  63#endif /* _MS_SENSORS_I2C_H */
  64