8-Channel Addressable Switch (IO Expander) 0x29 family support (DS2408)

modulename: w1_ds2408.ko

configname: CONFIG_W1_SLAVE_DS2408

Linux Kernel Configuration
└─>Device Drivers
└─>Dallas's 1-wire support
└─>1-wire Slaves
└─>8-Channel Addressable Switch (IO Expander) 0x29 family support (DS2408)
In linux kernel since version 3 (release Date: 2011-07-21)  
Say Y here if you want to use a 1-wire
DS2408 8-Channel Addressable Switch device support

source code:
drivers/w1/slaves/w1_ds2408.c
depends
CONFIG_W1