9994ea855c
* API headers moved to api/ * smbus file added from libi2c and kernel i2c header cleaned up * fix compilation of swig and use i2c.h header Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
94 lines
3.6 KiB
C
94 lines
3.6 KiB
C
/*
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* Author: Robin Knight (robin.knight@roadnarrows.com)
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*
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* Copyright © 2009 RoadNarrows LLC.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that
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* (1) The above copyright notice and the following two paragraphs
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* appear in all copies of the source code and (2) redistributions
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* including binaries reproduces these notices in the supporting
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* documentation. Substantial modifications to this software may be
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* copyrighted by their authors and need not follow the licensing terms
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* described here, provided that the new terms are clearly indicated in
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* all files where they apply.
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*
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* IN NO EVENT SHALL THE AUTHOR, ROADNARROWS LLC, OR ANY MEMBERS/EMPLOYEES
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* OF ROADNARROW LLC OR DISTRIBUTORS OF THIS SOFTWARE BE LIABLE TO ANY
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* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
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* DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION,
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* EVEN IF THE AUTHORS OR ANY OF THE ABOVE PARTIES HAVE BEEN ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* THE AUTHOR AND ROADNARROWS LLC SPECIFICALLY DISCLAIM ANY WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN
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* "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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#pragma once
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <sys/types.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include "linux/i2c-dev.h"
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typedef union i2c_smbus_data_union
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{
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uint8_t byte; ///< data byte
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unsigned short word; ///< data short word
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uint8_t block[I2C_SMBUS_BLOCK_MAX + 2];
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///< block[0] is used for length and one more for PEC
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} i2c_smbus_data_t;
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typedef struct i2c_smbus_ioctl_data_struct
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{
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uint8_t read_write; ///< operation direction
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uint8_t command; ///< ioctl command
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int size; ///< data size
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i2c_smbus_data_t *data; ///< data
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} i2c_smbus_ioctl_data_t;
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// ---------------------------------------------------------------------------
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// Prototypes
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// ---------------------------------------------------------------------------
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extern int i2c_smbus_access(int fd, uint8_t read_write, uint8_t command,
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int size, i2c_smbus_data_t *data);
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extern int i2c_smbus_write_quick(int fd, uint8_t value);
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extern int i2c_smbus_read_byte(int fd);
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extern int i2c_smbus_write_byte(int fd, uint8_t value);
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extern int i2c_smbus_read_byte_data(int fd, uint8_t command);
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extern int i2c_smbus_write_byte_data(int fd, uint8_t command, uint8_t value);
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extern int i2c_smbus_read_word_data(int fd, uint8_t command);
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extern int i2c_smbus_write_word_data(int fd, uint8_t command, unsigned short value);
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extern int i2c_smbus_process_call(int fd, uint8_t command, unsigned short value);
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extern int i2c_smbus_read_block_data(int fd, uint8_t command, uint8_t *values);
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extern int i2c_smbus_write_block_data(int fd, uint8_t command, uint8_t length,
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const uint8_t *values);
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extern int i2c_smbus_read_i2c_block_data(int fd, uint8_t command,
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uint8_t *values);
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extern int i2c_smbus_write_i2c_block_data(int fd, uint8_t command, uint8_t length,
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const uint8_t *values);
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extern int i2c_smbus_block_process_call(int fd, uint8_t command, uint8_t length,
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uint8_t *values);
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