i2c_smbus_xfer
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Name

i2c_smbus_xfer — execute SMBus protocol operations

Synopsis

s32 i2c_smbus_xfer (struct i2c_adapter * adapter,
 u16 addr,
 unsigned short flags,
 char read_write,
 u8 command,
 int protocol,
 union i2c_smbus_data * data);
 

Arguments

adapter

Handle to I2C bus

addr

Address of SMBus slave on that bus

flags

I2C_CLIENT_* flags (usually zero or I2C_CLIENT_PEC)

read_write

I2C_SMBUS_READ or I2C_SMBUS_WRITE

command

Byte interpreted by slave, for protocols which use such bytes

protocol

SMBus protocol operation to execute, such as I2C_SMBUS_PROC_CALL

data

Data to be read or written

Description

This executes an SMBus protocol operation, and returns a negative errno code else zero on success.

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