i2c_smbus_write_word_data(9) centos man page | unix.com

I2C_SMBUS_WRITE_WORD(9) 				      I2C and SMBus Subsystem					   I2C_SMBUS_WRITE_WORD(9)

NAME
       i2c_smbus_write_word_data - SMBus "write word" protocol

SYNOPSIS
       s32 i2c_smbus_write_word_data(const struct i2c_client * client, u8 command, u16 value);

ARGUMENTS
       client
	   Handle to slave device

       command
	   Byte interpreted by slave

       value
	   16-bit "word" being written

DESCRIPTION
       This executes the SMBus "write word" protocol, returning negative errno else zero on success.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   I2C_SMBUS_WRITE_WORD(9)