1*f80ad8b4SAndroid Build Coastguard Worker /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2*f80ad8b4SAndroid Build Coastguard Worker /* 3*f80ad8b4SAndroid Build Coastguard Worker * i2c-dev.h - I2C bus char device interface 4*f80ad8b4SAndroid Build Coastguard Worker * 5*f80ad8b4SAndroid Build Coastguard Worker * Copyright (C) 1995-97 Simon G. Vogl 6*f80ad8b4SAndroid Build Coastguard Worker * Copyright (C) 1998-99 Frodo Looijaard <[email protected]> 7*f80ad8b4SAndroid Build Coastguard Worker */ 8*f80ad8b4SAndroid Build Coastguard Worker 9*f80ad8b4SAndroid Build Coastguard Worker #ifndef _UAPI_LINUX_I2C_DEV_H 10*f80ad8b4SAndroid Build Coastguard Worker #define _UAPI_LINUX_I2C_DEV_H 11*f80ad8b4SAndroid Build Coastguard Worker 12*f80ad8b4SAndroid Build Coastguard Worker #include <linux/types.h> 13*f80ad8b4SAndroid Build Coastguard Worker #include <linux/compiler.h> 14*f80ad8b4SAndroid Build Coastguard Worker 15*f80ad8b4SAndroid Build Coastguard Worker /* /dev/i2c-X ioctl commands. The ioctl's parameter is always an 16*f80ad8b4SAndroid Build Coastguard Worker * unsigned long, except for: 17*f80ad8b4SAndroid Build Coastguard Worker * - I2C_FUNCS, takes pointer to an unsigned long 18*f80ad8b4SAndroid Build Coastguard Worker * - I2C_RDWR, takes pointer to struct i2c_rdwr_ioctl_data 19*f80ad8b4SAndroid Build Coastguard Worker * - I2C_SMBUS, takes pointer to struct i2c_smbus_ioctl_data 20*f80ad8b4SAndroid Build Coastguard Worker */ 21*f80ad8b4SAndroid Build Coastguard Worker #define I2C_RETRIES 0x0701 /* number of times a device address should 22*f80ad8b4SAndroid Build Coastguard Worker be polled when not acknowledging */ 23*f80ad8b4SAndroid Build Coastguard Worker #define I2C_TIMEOUT 0x0702 /* set timeout in units of 10 ms */ 24*f80ad8b4SAndroid Build Coastguard Worker 25*f80ad8b4SAndroid Build Coastguard Worker /* NOTE: Slave address is 7 or 10 bits, but 10-bit addresses 26*f80ad8b4SAndroid Build Coastguard Worker * are NOT supported! (due to code brokenness) 27*f80ad8b4SAndroid Build Coastguard Worker */ 28*f80ad8b4SAndroid Build Coastguard Worker #define I2C_SLAVE 0x0703 /* Use this slave address */ 29*f80ad8b4SAndroid Build Coastguard Worker #define I2C_SLAVE_FORCE 0x0706 /* Use this slave address, even if it 30*f80ad8b4SAndroid Build Coastguard Worker is already in use by a driver! */ 31*f80ad8b4SAndroid Build Coastguard Worker #define I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */ 32*f80ad8b4SAndroid Build Coastguard Worker 33*f80ad8b4SAndroid Build Coastguard Worker #define I2C_FUNCS 0x0705 /* Get the adapter functionality mask */ 34*f80ad8b4SAndroid Build Coastguard Worker 35*f80ad8b4SAndroid Build Coastguard Worker #define I2C_RDWR 0x0707 /* Combined R/W transfer (one STOP only) */ 36*f80ad8b4SAndroid Build Coastguard Worker 37*f80ad8b4SAndroid Build Coastguard Worker #define I2C_PEC 0x0708 /* != 0 to use PEC with SMBus */ 38*f80ad8b4SAndroid Build Coastguard Worker #define I2C_SMBUS 0x0720 /* SMBus transfer */ 39*f80ad8b4SAndroid Build Coastguard Worker 40*f80ad8b4SAndroid Build Coastguard Worker 41*f80ad8b4SAndroid Build Coastguard Worker /* This is the structure as used in the I2C_SMBUS ioctl call */ 42*f80ad8b4SAndroid Build Coastguard Worker struct i2c_smbus_ioctl_data { 43*f80ad8b4SAndroid Build Coastguard Worker __u8 read_write; 44*f80ad8b4SAndroid Build Coastguard Worker __u8 command; 45*f80ad8b4SAndroid Build Coastguard Worker __u32 size; 46*f80ad8b4SAndroid Build Coastguard Worker union i2c_smbus_data __user *data; 47*f80ad8b4SAndroid Build Coastguard Worker }; 48*f80ad8b4SAndroid Build Coastguard Worker 49*f80ad8b4SAndroid Build Coastguard Worker /* This is the structure as used in the I2C_RDWR ioctl call */ 50*f80ad8b4SAndroid Build Coastguard Worker struct i2c_rdwr_ioctl_data { 51*f80ad8b4SAndroid Build Coastguard Worker struct i2c_msg __user *msgs; /* pointers to i2c_msgs */ 52*f80ad8b4SAndroid Build Coastguard Worker __u32 nmsgs; /* number of i2c_msgs */ 53*f80ad8b4SAndroid Build Coastguard Worker }; 54*f80ad8b4SAndroid Build Coastguard Worker 55*f80ad8b4SAndroid Build Coastguard Worker #define I2C_RDWR_IOCTL_MAX_MSGS 42 56*f80ad8b4SAndroid Build Coastguard Worker /* Originally defined with a typo, keep it for compatibility */ 57*f80ad8b4SAndroid Build Coastguard Worker #define I2C_RDRW_IOCTL_MAX_MSGS I2C_RDWR_IOCTL_MAX_MSGS 58*f80ad8b4SAndroid Build Coastguard Worker 59*f80ad8b4SAndroid Build Coastguard Worker 60*f80ad8b4SAndroid Build Coastguard Worker #endif /* _UAPI_LINUX_I2C_DEV_H */ 61