2 i2c-dev.h - i2c-bus driver, char device interface
4 Copyright (C) 1995-97 Simon G. Vogl
5 Copyright (C) 1998-99 Frodo Looijaard <frodol@dds.nl>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 /* $Id: i2c-dev.h,v 1.13 2003/01/21 08:08:16 kmalkki Exp $ */
24 #ifndef _LINUX_I2C_DEV_H
25 #define _LINUX_I2C_DEV_H
27 #include <linux/types.h>
28 #include <linux/compiler.h>
30 /* Some IOCTL commands are defined in <linux/i2c.h> */
31 /* Note: 10-bit addresses are NOT supported! */
33 /* This is the structure as used in the I2C_SMBUS ioctl call */
34 struct i2c_smbus_ioctl_data {
38 union i2c_smbus_data __user *data;
41 /* This is the structure as used in the I2C_RDWR ioctl call */
42 struct i2c_rdwr_ioctl_data {
43 struct i2c_msg __user *msgs; /* pointers to i2c_msgs */
44 __u32 nmsgs; /* number of i2c_msgs */
47 #define I2C_RDRW_IOCTL_MAX_MSGS 42
49 #endif /* _LINUX_I2C_DEV_H */