I2C bit-banging interfaces

modulename: i2c-algo-bit.ko

configname: CONFIG_I2C_ALGOBIT

Linux Kernel Configuration
└─>Device Drivers
└─>I2C support
└─>I2C Algorithms
└─>I2C bit-banging interfaces
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
source code:
drivers/i2c//algos/i2c-algo-bit.c