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1 | /* |
2 | i2c-dev.h - i2c-bus driver, char device interface | |
3 | ||
4 | Copyright (C) 1995-97 Simon G. Vogl | |
5 | Copyright (C) 1998-99 Frodo Looijaard <frodol@dds.nl> | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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. | |
20 | */ | |
21 | ||
22 | /* $Id: i2c-dev.h,v 1.13 2003/01/21 08:08:16 kmalkki Exp $ */ | |
23 | ||
24 | #ifndef _LINUX_I2C_DEV_H | |
25 | #define _LINUX_I2C_DEV_H | |
26 | ||
27 | #include <linux/types.h> | |
3607d1df | 28 | #include <linux/compiler.h> |
1da177e4 LT |
29 | |
30 | /* Some IOCTL commands are defined in <linux/i2c.h> */ | |
31 | /* Note: 10-bit addresses are NOT supported! */ | |
32 | ||
33 | /* This is the structure as used in the I2C_SMBUS ioctl call */ | |
34 | struct i2c_smbus_ioctl_data { | |
35 | __u8 read_write; | |
36 | __u8 command; | |
37 | __u32 size; | |
38 | union i2c_smbus_data __user *data; | |
39 | }; | |
40 | ||
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 */ | |
45 | }; | |
46 | ||
47 | #define I2C_RDRW_IOCTL_MAX_MSGS 42 | |
48 | ||
49 | #endif /* _LINUX_I2C_DEV_H */ |