cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ms_sensors_i2c.h (2311B)

      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		8
     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_hw_data - Temperature/Pressure sensor hardware data
     30 * @prom_len:		number of words in the PROM
     31 * @max_res_index:	maximum sensor resolution index
     32 */
     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 structure
     40 * @client:	i2c client
     41 * @lock:	lock protecting the i2c conversion
     42 * @prom:	array of PROM coefficients used for conversion. Added element
     43 *              for CRC computation
     44 * @res_index:	index to selected sensor resolution
     45 */
     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 */