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 <[email protected]> 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 #ifndef _LINUX_I2C_DEV_H 23 #define _LINUX_I2C_DEV_H 24 25 #include <linux/types.h> 26 #include <linux/compiler.h> 27 28 /* Some IOCTL commands are defined in <linux/i2c.h> */ 29 /* Note: 10-bit addresses are NOT supported! */ 30 31 /* This is the structure as used in the I2C_SMBUS ioctl call */ 32 struct i2c_smbus_ioctl_data { 33 __u8 read_write; 34 __u8 command; 35 __u32 size; 36 union i2c_smbus_data __user *data; 37 }; 38 39 /* This is the structure as used in the I2C_RDWR ioctl call */ 40 struct i2c_rdwr_ioctl_data { 41 struct i2c_msg __user *msgs; /* pointers to i2c_msgs */ 42 __u32 nmsgs; /* number of i2c_msgs */ 43 }; 44 45 #define I2C_RDRW_IOCTL_MAX_MSGS 42 46 47 #endif /* _LINUX_I2C_DEV_H */ 48