NXP PCA954x/PCA984x and Maxim MAX735x/MAX736x I2C Mux/switches

modulename: i2c-mux-pca954x.ko

configname: CONFIG_I2C_MUX_PCA954x

Linux Kernel Configuration
└─>Device Drivers
└─>I2C support
└─>Multiplexer I2C Chip support
└─>NXP PCA954x/PCA984x and Maxim MAX735x/MAX736x I2C Mux/switches
In linux kernel since version 2.6.36 (release Date: 2010-10-20)  
If you say yes here you get support for NXP PCA954x/PCA984x
and Maxim MAX735x/MAX736x I2C mux/switch devices.

This driver can also be built as a module. If so, the module
will be called i2c-mux-pca954x.

source code:
depends
CONFIG_I2C
CONFIG_I2C_MUX
CONFIG_COMPILE_TEST or CONFIG_GPIOLIB