freebsd-dev/sys/i386/include/iic.h
Nicolas Souchu bf896bd0e2 Change /dev/smb and /dev/iic interface to allow user programs to interact with
devices dynamically. That means,

        + only one /dev/iic or /dev/smb device for each smb/iic bus to access
        + I2C/SMB device address must be given to any ioctl
        + new devices may be plugged and accessed after boot, which was
          impossible previously (device addresses were hardcoded into
          the kernel)
1999-01-09 18:08:24 +00:00

48 lines
1.8 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.
*
* $Id: iic.h,v 1.1 1998/09/03 21:00:08 nsouch Exp $
*
*/
#ifndef __IIC_H
#define __IIC_H
#include <sys/ioccom.h>
struct iiccmd {
u_char slave;
int count;
int last;
char *buf;
};
#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 */
#endif