SMBus-specific protocols

modulename: i2c-smbus.ko

configname: CONFIG_I2C_SMBUS

Linux Kernel Configuration
└─>Device Drivers
└─>I2C support
└─>SMBus-specific protocols
In linux kernel since version 2.6.34 (release Date: 2010-05-16)  
Say Y here if you want support for SMBus extensions to the I2C
specification. At the moment, the only supported extension is
the SMBus alert protocol.

This support is also available as a module. If so, the module
will be called i2c-smbus.

source code: