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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Measurements Specialties common sensor driver4 *5 * Copyright (c) 2015 Measurement-Specialties6 */7 8#ifndef _MS_SENSORS_I2C_H9#define _MS_SENSORS_I2C_H10 11#include <linux/i2c.h>12#include <linux/mutex.h>13 14#define MS_SENSORS_TP_PROM_WORDS_NB 815 16/**17 * struct ms_ht_dev - Humidity/Temperature sensor device structure18 * @client: i2c client19 * @lock: lock protecting the i2c conversion20 * @res_index: index to selected sensor resolution21 */22struct ms_ht_dev {23 struct i2c_client *client;24 struct mutex lock;25 u8 res_index;26};27 28/**29 * struct ms_hw_data - Temperature/Pressure sensor hardware data30 * @prom_len: number of words in the PROM31 * @max_res_index: maximum sensor resolution index32 */33struct ms_tp_hw_data {34 u8 prom_len;35 u8 max_res_index;36};37 38/**39 * struct ms_tp_dev - Temperature/Pressure sensor device structure40 * @client: i2c client41 * @lock: lock protecting the i2c conversion42 * @prom: array of PROM coefficients used for conversion. Added element43 * for CRC computation44 * @res_index: index to selected sensor resolution45 */46struct ms_tp_dev {47 struct i2c_client *client;48 struct mutex lock;49 const struct ms_tp_hw_data *hw;50 u16 prom[MS_SENSORS_TP_PROM_WORDS_NB];51 u8 res_index;52};53 54int ms_sensors_reset(void *cli, u8 cmd, unsigned int delay);55int ms_sensors_read_prom_word(void *cli, int cmd, u16 *word);56int ms_sensors_convert_and_read(void *cli, u8 conv, u8 rd,57 unsigned int delay, u32 *adc);58int ms_sensors_read_serial(struct i2c_client *client, u64 *sn);59ssize_t ms_sensors_show_serial(struct ms_ht_dev *dev_data, char *buf);60ssize_t ms_sensors_write_resolution(struct ms_ht_dev *dev_data, u8 i);61ssize_t ms_sensors_show_battery_low(struct ms_ht_dev *dev_data, char *buf);62ssize_t ms_sensors_show_heater(struct ms_ht_dev *dev_data, char *buf);63ssize_t ms_sensors_write_heater(struct ms_ht_dev *dev_data,64 const char *buf, size_t len);65int ms_sensors_ht_read_temperature(struct ms_ht_dev *dev_data,66 s32 *temperature);67int ms_sensors_ht_read_humidity(struct ms_ht_dev *dev_data,68 u32 *humidity);69int ms_sensors_tp_read_prom(struct ms_tp_dev *dev_data);70int ms_sensors_read_temp_and_pressure(struct ms_tp_dev *dev_data,71 int *temperature,72 unsigned int *pressure);73 74#endif /* _MS_SENSORS_I2C_H */75