menuconfig W1 tristate "Dallas's 1-wire support" depends on HAS_IOMEM ---help--- Dallas' 1-wire bus is useful to connect slow 1-pin devices such as iButtons and thermal sensors. If you want W1 support, you should say Y here. This W1 support can also be built as a module. If so, the module will be called wire.ko. if W1 config W1_CON depends on CONNECTOR bool "Userspace communication over connector" default y --- help --- This allows to communicate with userspace using connector. For more information see . There are three types of messages between w1 core and userspace: 1. Events. They are generated each time new master or slave device found either due to automatic or requested search. 2. Userspace commands. Includes read/write and search/alarm search commands. 3. Replies to userspace commands. source drivers/w1/masters/Kconfig source drivers/w1/slaves/Kconfig endif # W1