/*

    sensors.h - Part of libsensors, a Linux library for reading sensor data.

    Copyright (c) 1998, 1999  Frodo Looijaard <frodol@dds.nl>

    Copyright (C) 2007-2014   Jean Delvare <jdelvare@suse.de>

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU General Public License

    along with this program; if not, write to the Free Software

    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

    MA 02110-1301 USA.

*/

#ifndef LIB_SENSORS_SENSORS_H

#define LIB_SENSORS_SENSORS_H

#include <stdio.h>

#include <limits.h>

/* Publicly accessible library functions */

/* libsensors API version define, first digit is the major version (changed

   when the API + ABI breaks), the third digit is incremented to track small

   API additions like new flags / enum values. The second digit is for tracking

   larger additions like new methods. */

#define SENSORS_API_VERSION		0x440

#define SENSORS_CHIP_NAME_PREFIX_ANY	NULL

#define SENSORS_CHIP_NAME_ADDR_ANY	(-1)

#define SENSORS_BUS_TYPE_ANY		(-1)

#define SENSORS_BUS_TYPE_I2C		0

#define SENSORS_BUS_TYPE_ISA		1

#define SENSORS_BUS_TYPE_PCI		2

#define SENSORS_BUS_TYPE_SPI		3

#define SENSORS_BUS_TYPE_VIRTUAL	4

#define SENSORS_BUS_TYPE_ACPI		5

#define SENSORS_BUS_TYPE_HID		6

#define SENSORS_BUS_TYPE_MDIO		7

#define SENSORS_BUS_NR_ANY		(-1)

#define SENSORS_BUS_NR_IGNORE		(-2)

#ifdef __cplusplus

extern "C" {

#endif /* __cplusplus */

extern const char *libsensors_version;

typedef struct sensors_bus_id {

	short type;

	short nr;

} sensors_bus_id;

/* A chip name is encoded in this structure */

typedef struct sensors_chip_name {

	char *prefix;

	sensors_bus_id bus;

	int addr;

	char *path;

} sensors_chip_name;

/* Load the configuration file and the detected chips list. If this

   returns a value unequal to zero, you are in trouble; you can not

   assume anything will be initialized properly. If you want to

   reload the configuration file, call sensors_cleanup() below before

   calling sensors_init() again. */

int sensors_init(FILE *input);

/* Clean-up function: You can't access anything after

   this, until the next sensors_init() call! */

void sensors_cleanup(void);

/* Parse a chip name to the internal representation. Return 0 on success, <0

   on error. */

int sensors_parse_chip_name(const char *orig_name, sensors_chip_name *res);

/* Free memory allocated for the internal representation of a chip name. */

void sensors_free_chip_name(sensors_chip_name *chip);

/* Print a chip name from its internal representation. Note that chip should

   not contain wildcard values! Return the number of characters printed on

   success (same as snprintf), <0 on error. */

int sensors_snprintf_chip_name(char *str, size_t size,

			       const sensors_chip_name *chip);

/* This function returns the adapter name of a bus,

   as used within the sensors_chip_name structure. If it could not be found,

   it returns NULL */

const char *sensors_get_adapter_name(const sensors_bus_id *bus);

typedef struct sensors_feature sensors_feature;

/* Look up the label for a given feature. Note that chip should not

   contain wildcard values! The returned string is newly allocated (free it

   yourself). On failure, NULL is returned.

   If no label exists for this feature, its name is returned itself. */

char *sensors_get_label(const sensors_chip_name *name,

			const sensors_feature *feature);

/* Read the value of a subfeature of a certain chip. Note that chip should not

   contain wildcard values! This function will return 0 on success, and <0

   on failure.  */

int sensors_get_value(const sensors_chip_name *name, int subfeat_nr,

		      double *value);

/* Set the value of a subfeature of a certain chip. Note that chip should not

   contain wildcard values! This function will return 0 on success, and <0

   on failure. */

int sensors_set_value(const sensors_chip_name *name, int subfeat_nr,

		      double value);

/* Execute all set statements for this particular chip. The chip may contain

   wildcards!  This function will return 0 on success, and <0 on failure. */

int sensors_do_chip_sets(const sensors_chip_name *name);

/* This function returns all detected chips that match a given chip name,

   one by one. If no chip name is provided, all detected chips are returned.

   To start at the beginning of the list, use 0 for nr; NULL is returned if

   we are at the end of the list. Do not try to change these chip names, as

   they point to internal structures! */

const sensors_chip_name *sensors_get_detected_chips(const sensors_chip_name

						    *match, int *nr);

/* These defines are used in the flags field of sensors_subfeature */

#define SENSORS_MODE_R			1

#define SENSORS_MODE_W			2

#define SENSORS_COMPUTE_MAPPING		4

typedef enum sensors_feature_type {

	SENSORS_FEATURE_IN		= 0x00,

	SENSORS_FEATURE_FAN		= 0x01,

	SENSORS_FEATURE_TEMP		= 0x02,

	SENSORS_FEATURE_POWER		= 0x03,

	SENSORS_FEATURE_ENERGY		= 0x04,

	SENSORS_FEATURE_CURR		= 0x05,

	SENSORS_FEATURE_HUMIDITY	= 0x06,

	SENSORS_FEATURE_MAX_MAIN,

	SENSORS_FEATURE_VID		= 0x10,

	SENSORS_FEATURE_INTRUSION	= 0x11,

	SENSORS_FEATURE_MAX_OTHER,

	SENSORS_FEATURE_BEEP_ENABLE	= 0x18,

	SENSORS_FEATURE_MAX,

	SENSORS_FEATURE_UNKNOWN		= INT_MAX,

} sensors_feature_type;

/* All the sensor types (in, fan, temp, vid) are a multiple of 0x100 apart,

   and sensor subfeatures which have no compute mapping have bit 7 set. */

typedef enum sensors_subfeature_type {

	SENSORS_SUBFEATURE_IN_INPUT = SENSORS_FEATURE_IN << 8,

	SENSORS_SUBFEATURE_IN_MIN,

	SENSORS_SUBFEATURE_IN_MAX,

	SENSORS_SUBFEATURE_IN_LCRIT,

	SENSORS_SUBFEATURE_IN_CRIT,

	SENSORS_SUBFEATURE_IN_AVERAGE,

	SENSORS_SUBFEATURE_IN_LOWEST,

	SENSORS_SUBFEATURE_IN_HIGHEST,

	SENSORS_SUBFEATURE_IN_ALARM = (SENSORS_FEATURE_IN << 8) | 0x80,

	SENSORS_SUBFEATURE_IN_MIN_ALARM,

	SENSORS_SUBFEATURE_IN_MAX_ALARM,

	SENSORS_SUBFEATURE_IN_BEEP,

	SENSORS_SUBFEATURE_IN_LCRIT_ALARM,

	SENSORS_SUBFEATURE_IN_CRIT_ALARM,

	SENSORS_SUBFEATURE_FAN_INPUT = SENSORS_FEATURE_FAN << 8,

	SENSORS_SUBFEATURE_FAN_MIN,

	SENSORS_SUBFEATURE_FAN_MAX,

	SENSORS_SUBFEATURE_FAN_ALARM = (SENSORS_FEATURE_FAN << 8) | 0x80,

	SENSORS_SUBFEATURE_FAN_FAULT,

	SENSORS_SUBFEATURE_FAN_DIV,

	SENSORS_SUBFEATURE_FAN_BEEP,

	SENSORS_SUBFEATURE_FAN_PULSES,

	SENSORS_SUBFEATURE_FAN_MIN_ALARM,

	SENSORS_SUBFEATURE_FAN_MAX_ALARM,

	SENSORS_SUBFEATURE_TEMP_INPUT = SENSORS_FEATURE_TEMP << 8,

	SENSORS_SUBFEATURE_TEMP_MAX,

	SENSORS_SUBFEATURE_TEMP_MAX_HYST,

	SENSORS_SUBFEATURE_TEMP_MIN,

	SENSORS_SUBFEATURE_TEMP_CRIT,

	SENSORS_SUBFEATURE_TEMP_CRIT_HYST,

	SENSORS_SUBFEATURE_TEMP_LCRIT,

	SENSORS_SUBFEATURE_TEMP_EMERGENCY,

	SENSORS_SUBFEATURE_TEMP_EMERGENCY_HYST,

	SENSORS_SUBFEATURE_TEMP_LOWEST,

	SENSORS_SUBFEATURE_TEMP_HIGHEST,

	SENSORS_SUBFEATURE_TEMP_MIN_HYST,

	SENSORS_SUBFEATURE_TEMP_LCRIT_HYST,

	SENSORS_SUBFEATURE_TEMP_ALARM = (SENSORS_FEATURE_TEMP << 8) | 0x80,

	SENSORS_SUBFEATURE_TEMP_MAX_ALARM,

	SENSORS_SUBFEATURE_TEMP_MIN_ALARM,

	SENSORS_SUBFEATURE_TEMP_CRIT_ALARM,

	SENSORS_SUBFEATURE_TEMP_FAULT,

	SENSORS_SUBFEATURE_TEMP_TYPE,

	SENSORS_SUBFEATURE_TEMP_OFFSET,

	SENSORS_SUBFEATURE_TEMP_BEEP,

	SENSORS_SUBFEATURE_TEMP_EMERGENCY_ALARM,

	SENSORS_SUBFEATURE_TEMP_LCRIT_ALARM,

	SENSORS_SUBFEATURE_POWER_AVERAGE = SENSORS_FEATURE_POWER << 8,

	SENSORS_SUBFEATURE_POWER_AVERAGE_HIGHEST,

	SENSORS_SUBFEATURE_POWER_AVERAGE_LOWEST,

	SENSORS_SUBFEATURE_POWER_INPUT,

	SENSORS_SUBFEATURE_POWER_INPUT_HIGHEST,

	SENSORS_SUBFEATURE_POWER_INPUT_LOWEST,

	SENSORS_SUBFEATURE_POWER_CAP,

	SENSORS_SUBFEATURE_POWER_CAP_HYST,

	SENSORS_SUBFEATURE_POWER_MAX,

	SENSORS_SUBFEATURE_POWER_CRIT,

	SENSORS_SUBFEATURE_POWER_AVERAGE_INTERVAL = (SENSORS_FEATURE_POWER << 8) | 0x80,

	SENSORS_SUBFEATURE_POWER_ALARM,

	SENSORS_SUBFEATURE_POWER_CAP_ALARM,

	SENSORS_SUBFEATURE_POWER_MAX_ALARM,

	SENSORS_SUBFEATURE_POWER_CRIT_ALARM,

	SENSORS_SUBFEATURE_ENERGY_INPUT = SENSORS_FEATURE_ENERGY << 8,

	SENSORS_SUBFEATURE_CURR_INPUT = SENSORS_FEATURE_CURR << 8,

	SENSORS_SUBFEATURE_CURR_MIN,

	SENSORS_SUBFEATURE_CURR_MAX,

	SENSORS_SUBFEATURE_CURR_LCRIT,

	SENSORS_SUBFEATURE_CURR_CRIT,

	SENSORS_SUBFEATURE_CURR_AVERAGE,

	SENSORS_SUBFEATURE_CURR_LOWEST,

	SENSORS_SUBFEATURE_CURR_HIGHEST,

	SENSORS_SUBFEATURE_CURR_ALARM = (SENSORS_FEATURE_CURR << 8) | 0x80,

	SENSORS_SUBFEATURE_CURR_MIN_ALARM,

	SENSORS_SUBFEATURE_CURR_MAX_ALARM,

	SENSORS_SUBFEATURE_CURR_BEEP,

	SENSORS_SUBFEATURE_CURR_LCRIT_ALARM,

	SENSORS_SUBFEATURE_CURR_CRIT_ALARM,

	SENSORS_SUBFEATURE_HUMIDITY_INPUT = SENSORS_FEATURE_HUMIDITY << 8,

	SENSORS_SUBFEATURE_VID = SENSORS_FEATURE_VID << 8,

	SENSORS_SUBFEATURE_INTRUSION_ALARM = SENSORS_FEATURE_INTRUSION << 8,

	SENSORS_SUBFEATURE_INTRUSION_BEEP,

	SENSORS_SUBFEATURE_BEEP_ENABLE = SENSORS_FEATURE_BEEP_ENABLE << 8,

	SENSORS_SUBFEATURE_UNKNOWN = INT_MAX,

} sensors_subfeature_type;

/* Data about a single chip feature (or category leader) */

struct sensors_feature {

	char *name;

	int number;

	sensors_feature_type type;

	/* Members below are for libsensors internal use only */

	int first_subfeature;

	int padding1;

};

/* Data about a single chip subfeature:

   name is the string name used to refer to this subfeature (in config files)

   number is the internal subfeature number, used in many functions to refer

     to this subfeature

   type is the subfeature type

   mapping is the number of a main feature this subfeature belongs to

     (for example subfeatures fan1_input, fan1_min, fan1_div and fan1_alarm

      are mapped to main feature fan1)

   flags is a bitfield, its value is a combination of SENSORS_MODE_R (readable),

     SENSORS_MODE_W (writable) and SENSORS_COMPUTE_MAPPING (affected by the

     computation rules of the main feature) */

typedef struct sensors_subfeature {

	char *name;

	int number;

	sensors_subfeature_type type;

	int mapping;

	unsigned int flags;

} sensors_subfeature;

/* This returns all main features of a specific chip. nr is an internally

   used variable. Set it to zero to start at the begin of the list. If no

   more features are found NULL is returned.

   Do not try to change the returned structure; you will corrupt internal

   data structures. */

const sensors_feature *

sensors_get_features(const sensors_chip_name *name, int *nr);

/* This returns all subfeatures of a given main feature. nr is an internally

   used variable. Set it to zero to start at the begin of the list. If no

   more features are found NULL is returned.

   Do not try to change the returned structure; you will corrupt internal

   data structures. */

const sensors_subfeature *

sensors_get_all_subfeatures(const sensors_chip_name *name,

			    const sensors_feature *feature, int *nr);

/* This returns the subfeature of the given type for a given main feature,

   if it exists, NULL otherwise.

   Do not try to change the returned structure; you will corrupt internal

   data structures. */

const sensors_subfeature *

sensors_get_subfeature(const sensors_chip_name *name,

		       const sensors_feature *feature,

		       sensors_subfeature_type type);

#ifdef __cplusplus

}

#endif /* __cplusplus */

#endif /* def LIB_SENSORS_SENSORS_H */