mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-29 12:03:03 +00:00
66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/*-
|
|
* Copyright (c) 1998 Nicolas Souchu
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
*/
|
|
#ifndef __IIC_H
|
|
#define __IIC_H
|
|
|
|
#include <sys/ioccom.h>
|
|
|
|
/* Designed to be compatible with linux's struct i2c_msg */
|
|
struct iic_msg
|
|
{
|
|
uint16_t slave;
|
|
uint16_t flags;
|
|
#define IIC_M_WR 0 /* Fake flag for write */
|
|
#define IIC_M_RD 0x0001 /* read vs write */
|
|
uint16_t len; /* msg legnth */
|
|
uint8_t * buf;
|
|
};
|
|
|
|
struct iiccmd {
|
|
u_char slave;
|
|
int count;
|
|
int last;
|
|
char *buf;
|
|
};
|
|
|
|
struct iic_rdwr_data {
|
|
struct iic_msg *msgs;
|
|
uint32_t nmsgs;
|
|
};
|
|
|
|
#define I2CSTART _IOW('i', 1, struct iiccmd) /* start condition */
|
|
#define I2CSTOP _IO('i', 2) /* stop condition */
|
|
#define I2CRSTCARD _IOW('i', 3, struct iiccmd) /* reset the card */
|
|
#define I2CWRITE _IOW('i', 4, struct iiccmd) /* send data */
|
|
#define I2CREAD _IOW('i', 5, struct iiccmd) /* receive data */
|
|
#define I2CRDWR _IOW('i', 6, struct iic_rdwr_data) /* General read/write interface */
|
|
#define I2CRPTSTART _IOW('i', 7, struct iiccmd) /* repeated start */
|
|
|
|
#endif
|